CN106382092B - Ladder and combination ladder - Google Patents

Abstract

The present invention provides a kind of ladder and combination ladders, belong to life field of tool, the ladder includes two ladder ontologies, multiple pedals and at least one connector, multiple pedals are rotatably set between two ladder ontologies, the both ends of at least one ladder ontology are fixedly installed fixing piece respectively, the fixing piece of same ladder ontology is on its inside, and connector is hinged with pedal respectively, and connector is slidably disposed in two fixing pieces of same ladder ontology.The ladder is highly practical, security performance is high.

Description

Ladders and Combination Ladders

technical field

The invention relates to the field of living tools, in particular to a ladder and a combined ladder.

Background technique

A ladder consists of two long thick poles on the sides, with a crossbar suitable for climbing across the middle, used for climbing.

At present, the safety performance of the existing ladders is not high, and they are not suitable for being erected at positions of different heights, because it is easy to make people's center of gravity move backward, which is unfavorable for the safety of climbers.

Contents of the invention

The object of the present invention is to provide a ladder to ensure the safety of climbers and to adjust the pedals to always be in a horizontal state.

Another object of the present invention is to provide a combination ladder.

Embodiments of the present invention are achieved like this:

A ladder, comprising two ladder bodies, a plurality of pedals and at least one connecting piece, the plurality of pedals are rotatably arranged between the two ladder bodies, and the two ends of at least one ladder body are respectively fixed with As for the fixing part, the fixing part of the same ladder body is located inside, the connecting parts are respectively hinged with the pedals, and the connecting parts are slidably arranged on the two fixing parts of the same ladder body.

In an optional embodiment of the present invention, each of the pedals is provided with a notch, and the two side walls opposite to the notch are respectively provided with first sliding grooves, and a connecting groove is slidably provided between the two first sliding grooves. shaft, and the connecting shaft is connected with the connecting piece.

In an optional embodiment of the present invention, the connecting piece is cylindrical, and the length direction of the connecting piece is parallel to the length direction of the ladder body.

In an optional embodiment of the present invention, the ladder further includes a protective component;

The protection assembly includes a flexible piece and two sliders, the middle of the flexible piece is in a ring structure, one end of the flexible piece is connected to one of the sliders, and the other end of the flexible piece is connected to the other one. The slider is connected;

The two ladder bodies are respectively provided with second slide slots, and the sliders are slidably arranged in the second slide slots.

In an optional embodiment of the present invention, the flexible member is a rope.

In an optional embodiment of the present invention, the two ends of the connecting piece are provided with external threads, and the two ends of the connecting piece are respectively provided with nuts that cooperate with it, and the side of each fixing piece away from the pedal is A nut is provided.

In an optional embodiment of the present invention, the side of the pedal is provided with anti-slip stripes.

In an optional embodiment of the present invention, the pedal further includes a rotating shaft, the pedal is rotated on the ladder body through the rotating shaft, the rotating shaft has a protrusion protruding from the outside of the ladder body, and the protrusion The radial direction is perforated with a pin shaft.

In an optional embodiment of the present invention, the ladder further includes a base, the base includes a connecting part and a supporting part, the connecting part and the supporting part form an "L" shape, and the connecting part is rotatably connected to the One end of the ladder body.

The present invention also provides a combination ladder, comprising the above ladder, wherein one ends of the two ladders are hinged to each other.

The beneficial effect of the embodiment of the present invention is that the ladder can be turned over by pulling the connecting piece through the connecting piece hinged to the pedal, which is suitable for adjusting the pedal to a horizontal state at different heights, and at the same time, the ladder has safety performance High protective component, the protective component has a ring structure in which the waist and chest of the human body are sleeved. When the climber accidentally slips down, the protective component can prevent the climber from falling, thus buying time for the climber to grab the ladder, so It has high security.

Description of drawings

In order to illustrate the technical solutions of the embodiments of the present invention more clearly, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention, and thus It should be regarded as a limitation on the scope, and those skilled in the art can also obtain other related drawings based on these drawings without creative work.

Fig. 1 is a structural schematic diagram of a first viewing angle of a ladder provided by an embodiment of the present invention;

Fig. 2 is a schematic structural diagram of a second viewing angle in Fig. 1;

Fig. 3 is a partial enlarged view of place A in Fig. 1;

Fig. 4 is a schematic structural diagram of a third viewing angle in Fig. 1;

Fig. 5 is a schematic structural diagram of a fourth viewing angle in Fig. 1;

Fig. 6 is a partial enlarged view of the place B in Fig. 1 .

Icons: 110-ladder body; 120-pedal; 121-rotating shaft; 122-pin shaft; 130-fixing piece; 140-connecting piece; 141-nut; Slide block; 170-first chute; 180-second chute; 190-base; 200-hook; 210-connecting shaft.

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations.

Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

It should be noted that like numerals and letters denote similar items in the following figures, therefore, once an item is defined in one figure, it does not require further definition and explanation in subsequent figures.

In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "horizontal", "inner", "outer" and so on is based on the orientation or positional relationship shown in the drawings, or is the The usual orientation or positional relationship of the invention product in use is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, therefore It should not be construed as a limitation of the present invention. In addition, the terms "first", "second", etc. are only used for distinguishing descriptions, and should not be construed as indicating or implying relative importance.

Furthermore, terms such as the term "horizontal" do not imply that the part is absolutely level or overhanging, but may be slightly inclined. For example, "horizontal" only means that its direction is more horizontal than "vertical", and it does not mean that the structure must be completely horizontal, but can be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise clearly specified and limited, the terms "installation", "installation", "connection" and "connection" should be understood in a broad sense, for example, it may be a fixed connection, It can also be a detachable connection or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediary, and it can be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention in specific situations.

For the step ladder, the inventor found that during the use of the ladder, when the ladder is set up at different height positions, in other words, the inclination angle of the ladder relative to a certain position is different, for example, the ladder is placed at different heights twice before and after , at this time, the angle of the ladder erected for the first time is different from that of the ladder erected for the second time, so that the pedals of the ladder erected once will not be in a horizontal state, and the pedals at this time are inclined relative to the ground. When a person stands on the pedal, his center of gravity will move forward or backward relative to the ladder. When the center of gravity of the climber moves backward relative to the ladder, it is not good for the safety of the climber, and when the center of gravity of the climber moves forward, it is not conducive to the safety of the climber. climb the ladder.

Example 1

An embodiment of the present invention provides a ladder, as shown in FIG. 1 , the ladder includes a ladder body 110 and a step 120 .

Referring to FIG. 1 , there are two ladder bodies 110 , the ladder bodies 110 are plate-like structures, and the two ladder bodies 110 are arranged opposite to each other. In this embodiment, the plate surfaces of the ladder bodies 110 are parallelogram-shaped.

Referring to Fig. 1, the number of pedals 120 is multiple, and the pedals 120 are also in a plate-like structure, and the multiple pedals 120 are located between the two ladder bodies 110, and the multiple pedals 120 are respectively perpendicular to the two ladder bodies 110. Two pedals 120 are rotatably arranged between the two ladder bodies 110, and the distance between every adjacent two pedals 120 is the same, so that climbers can climb the ladder step by step, and the pedals 120 are provided with anti-slip stripes to strengthen the feet Department of friction with the pedal 120.

Specifically, the pedal 120 also includes a rotating shaft 121, and the number of rotating shafts 121 of each pedal 120 is one or two. The pedal 120 is rotated through the rotating shaft 121 and is arranged between the two ladder bodies 110, and the rotating shaft 121 has a structure protruding from the ladder body. The protruding part on the outside of 110 is for the convenience of the normal maintenance of the ladder, so that the ladder can be easily disassembled. The radial direction of the protruding part is pierced with a pin shaft 122, wherein the radially outer side of the pin shaft 122 is opposite to the outer side of the ladder body 110. In this way, the step 120 and the ladder body 110 can be more firmly connected.

Referring to FIG. 1 , the two ends of the ladder body 110 are respectively provided with fixing pieces 130 . In this embodiment, the fixing pieces 130 are plate-shaped structures, and a plurality of pedals 120 are located between the two fixing pieces 130 .

In this embodiment, in order to avoid the interference effect of the fixing parts 130 on the climbers when climbing the ladder, the two fixing parts 130 are arranged on the inside of the ladder body 110; meanwhile, the board surfaces of the fixing parts 130 and the ladder body 110 are also perpendicular to each other relation.

Referring to Fig. 1, there is a connecting piece 140 pierced between the two fixing pieces 130, and the connecting piece 140 runs through the two fixing pieces 130. In this embodiment, the connecting piece 140 is preferably cylindrical, and the connecting piece 140 can specifically be Made of round steel, the connecting piece 140 is slidingly fitted with the two fixing pieces 130, that is, the two fixing pieces 130 are provided with through holes, and the connecting piece 140 is slidingly fitted with the two through holes. At the same time, the connecting piece 140 is also fitted with each The two pedals 120 are hinged, so that when the connecting piece 140 moves from one of the fixing pieces 130 to the other fixing piece 130, since the connecting piece 140 is respectively hinged with each pedal 120, when the connecting piece 140 moves, the connecting piece 140 The pedal 120 will be driven to move from one of the fixing parts 130 to the direction of the other fixing part 130, and the pedal 120 and the ladder body 110 are connected in rotation. Therefore, the angle of each pedal 120 relative to the ground changes accordingly, and each The angles of the pedals 120 relative to the ground are consistent, thus, the angles of the pedals 120 can be adjusted to be suitable for the ladders to be erected at different heights.

Wherein, the number of fixing pieces 130 may be two or four.

When there are two fixing pieces 130 , the two fixing pieces 130 are arranged on the same ladder body 110 .

When the number of fixing pieces 130 is four, every two fixing pieces 130 are a group, each ladder body 110 is provided with a set of fixing pieces 130, and the fixing pieces 130 on each ladder body 110 correspond to each other , the correspondence here refers to the corresponding angles, that is, the inclination angles of the connecting parts 140 on the two ladder bodies 110 are consistent, so that the angles of multiple pedals 120 can be adjusted at the same time, otherwise, if the two ladder bodies 110 on the The angles of the two connecting pieces 140 are inconsistent, and one of the connecting pieces 140 will affect the angle adjustment of the pedal 120 .

Referring to Figure 2, before and after the pedal 120 is flipped, in order to further strengthen the relative movement between the pedal 120 and the ladder body 110, the pedal 120 and the ladder body 110 are relatively fixed. In this embodiment, the two connecting parts 140 The ends are respectively provided with external threads, and the two ends of the connecting piece 140 are respectively provided with matching nuts 141, wherein the number of nuts 141 is at least two, when the number of nuts 141 is two, the number of each fixing piece 130 A nut 141 is respectively arranged on the side away from the pedal 120, the nut 141 at the lower position of the connecting piece 140 can limit the movement of the connecting piece 140 to the higher end of the ladder body 110, and the nut 141 at the higher position of the connecting piece 140 can limit The connecting piece 140 moves toward the lower end of the ladder body 110 , so that the two nuts 141 can fix the connecting piece 140 .

Certainly, the number of nuts 141 may also be more than three, and when the number is more than three, at least two nuts 141 need to be arranged at the positions mentioned above.

When the inclination angle of the ladder relative to the ground is from low to high, take two nuts 141 as an example. First, unscrew the nuts 141 at the lower and higher positions of the connecting piece 140, and move from the lower position of the connecting piece 140 to the higher position. and pull the connecting piece 140 to make the pedals 120 reach a predetermined angle, and then screw the nuts 141 on the lower and higher positions of the connecting piece 140 .

When the inclination angle of the ladder relative to the ground is from high to low, still taking two nuts 141 as an example, the operation process still unscrews the nuts 141 at the lower position and the higher position of the connecting piece 140 first, and the higher position of the connecting piece 140 position to the lower position and pull the connecting piece 140, and then drive the multiple pedals 120 to turn over to a suitable angle. When the multiple pedals 120 reach the predetermined angle, then screw on the lower and higher positions of the connecting piece 140. Nut 141.

Referring to Fig. 2, in this embodiment, in order to make the structure of the ladder more reasonable, a notch 150 is provided on each pedal 120, wherein the opposite side walls of the notch 150 are respectively provided with first slide grooves 170, the first The chute 170 is a rectangular slot, the first chute 170 is opened in the length direction of the pedal 120 and extends along the width direction of the pedal 120, a connecting shaft 210 is slidably arranged between the two first chute 170, and the connecting shaft 210 One end abuts in one of the first chute 170, and the other side of the connecting shaft 210 abuts in the other first chute 170, the connecting shaft 210 can move along the width direction of the pedal 120, and the connecting shaft 210 That is, it is hinged with the connecting member 140, specifically, the connecting shaft 210 passes through the connecting member 140 or the connecting member 140 passes through the connecting shaft 210, and the passage here preferably passes the connecting shaft 210 through the axis of the connecting member 140, in other words, The axis of the connecting shaft 210 intersects and is perpendicular to the axis of the connecting piece 140; in addition, in order to reduce the frictional force between the connecting shaft 210 and the first chute 170, the two ends of the connecting shaft 210 are preferably arranged in a hemispherical shape, so that the connecting shaft 210 forms a point-to-surface contact with the corresponding sidewall in the first slide groove 170, thereby reducing friction.

When adjusting the angle of the pedal 120, after unscrewing the two nuts 141 on the connecting piece 140, pull the connecting piece 140 from the higher position of the connecting piece 140 to the lower position or reversely pull the connecting piece 140, because the pedal 120 and the ladder body 110 rotate Connection, the connecting piece 140 is connected with the connecting shaft 210, the connecting piece 140 drives the pedal 120 to turn over during the moving process, and the connecting piece 140 moves and the pedal 120 turns over at the same time, the connecting shaft 210 will also be in the two first chute 170, so that the step 120 can be turned over a larger angle, so that the ladder can be erected at a higher position.

As shown in Figure 2 and Figure 3, the existing ladder itself often lacks safety facilities. When using the ladder at a higher position, if there are no reasonable protection measures, it will cause great disadvantages to the safety of climbers. Therefore, this embodiment , the ladder also has a guard assembly 160.

Wherein, the protective assembly 160 includes a flexible piece 161 and two sliders 162. The middle part of the flexible piece 161 is a ring structure, which is mainly used to be sleeved on the waist-chest position of the human body. One end of the flexible piece 161 is connected to the One sliding block 162 is connected, the other end of the flexible member 161 is connected to another sliding block 162 , and the ladder body 110 is respectively provided with second sliding slots 180 , and the two sliding blocks 162 are correspondingly arranged in the second sliding slots 180 .

Wherein, the second chute 180 can be arranged on any side wall of the ladder body 110 in the length direction. In this embodiment, considering the rationality of the structure, the second chute 180 is arranged on the side wall corresponding to the thickness direction of the ladder body 110 The side facing the human body, and the second chute 180 can be a T-shaped groove or a dovetail groove. Correspondingly, the slider 162 has a T-shaped structure or a dovetail structure, so that the slider 162 can be embedded in the second chute 180 .

Specifically, the flexible member 161 can be divided into three parts, the first part and the third part are elongated respectively, and the second part is the above-mentioned annular structure, and the first part and the third part are respectively connected to the two sides of the second part. connected so that the first part, second part and third part form a whole.

The flexible member 161 can be a rope, preferably, the second part is an elastic rope, and the first part and the third part are general ropes.

During use, the second part of the flexible member 161 is sleeved on the waist-chest position of the human body. As the climber continues to climb, the slider 162 and the flexible member 161 will continue to rise with the climber. The protective assembly 160 can prevent people from being separated from the ladder. Even if the climber slips accidentally, the protective assembly 160 can prevent the climber from falling, so that it has enough time to grab the ladder body 110 or the pedal 120, thus having higher safety performance.

Referring to Figure 4, in addition, the ladder also includes a base 190, the base 190 includes a connecting part and a supporting part, the connecting part and the supporting part form an "L" shape, and both the connecting part and the supporting part are plate-shaped structures, and the connecting part is rotatably connected to One end of the ladder body 110, in the actual use process, that is, the connecting part is rotatably connected to the bottom end of the ladder, and the supporting part is used to support the whole ladder, so that the ladder body 110 is separated from the ground. The advantage of this is that when the ladder is erected at different heights , the contact area between the ladder and the ground is larger to prevent the ladder from sliding relative to the ground.

Referring to Fig. 5, the ladder also includes a hook 200. The hook 200 is arranged on the end of the ladder body 110 away from the base 190. The number of the hooks 200 is preferably two, and each ladder body 110 is correspondingly provided with one. The hook 200 can be used to move the ladder Fix it at a high place to prevent the ladder from tipping backwards.

In summary, the ladder is provided with two fixing parts 130 on at least one ladder body 110, and the two fixing parts 130 pass through the connecting part 140. Connection, by pulling the connecting piece 140, the flipping of the pedal 120 can be realized. When it is suitable for different height positions, the pedal 120 can still be adjusted to a horizontal state, which is convenient for climbers to climb. At the same time, the ladder also includes a ladder that can slide relative to the ladder. The protective assembly 160 of the protective assembly 160, by setting the flexible member 161 with a ring structure in the protective assembly 160 on the waist-chest position of the human body, when the climber accidentally slips down, the protective assembly 160 can prevent the climber from falling and catch him. Living on the ladder body 110 or the pedal 120 buys time and has higher safety.

Example 2

The present invention also provides a combined ladder, which comprises the above-mentioned ladder, and one end of the two ladders is hinged to each other, so that the two ladders form a ladder, which is convenient for multiple people to work at the same time.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims (9)

1. A kind of ladder is characterized in that, comprises two ladder bodies, a plurality of pedals and at least one connector, a plurality of said pedals are rotatably arranged between two said ladder bodies, at least one of said ladder bodies The two ends are respectively fixed with fixing parts, the fixing parts of the same ladder body are located inside, the connecting parts are respectively hinged with the pedals, and the connecting parts are slidably arranged on the two sides of the same ladder body. a said fixture; Each of the pedals is provided with a notch, and the opposite side walls of the notch are respectively provided with a first sliding groove, and a connecting shaft is slidably arranged between the two first sliding grooves, and the connecting shaft and the Connectors connect. 2 . The ladder according to claim 1 , wherein the connecting piece is cylindrical, and the lengthwise direction of the connecting piece is parallel to the lengthwise direction of the ladder body. 3 . 3. The ladder according to claim 1, wherein the ladder further comprises a protective assembly; The protection assembly includes a flexible piece and two sliders, the middle of the flexible piece is in a ring structure, one end of the flexible piece is connected to one of the sliders, and the other end of the flexible piece is connected to the other one. The slider is connected; The two ladder bodies are respectively provided with second slide slots, and the sliders are slidably arranged in the second slide slots. 4. The ladder of claim 3, wherein the flexible member is a rope. 5. The ladder according to claim 1, characterized in that, the two ends of the connecting piece are provided with external threads, and the two ends of the connecting piece are respectively provided with nuts that cooperate with it, and each of the fixing pieces is far away from the One side of the pedal is provided with a nut. 6. The ladder according to claim 1, characterized in that, the sides of the steps are provided with anti-slip stripes. 7. The ladder according to claim 1, wherein the pedal further comprises a rotating shaft, the pedal is rotated on the ladder body through the rotating shaft, and the rotating shaft has a protrusion protruding from the outside of the ladder body part, and the radial direction of the protruding part is pierced with a pin shaft. 8. The ladder according to claim 1, characterized in that, the ladder further comprises a base, the base comprises a connection part and a support part, the connection part and the support part form an "L" shape, and the connection The part is rotatably connected to one end of the ladder body. 9. A combination ladder, characterized in that it comprises two ladders according to any one of claims 1-8, and one end of the two ladders is hinged to each other.