CN104029704A - Folding type overhauling test trolley - Google Patents

Abstract

A foldable maintenance test trolley, which mainly includes a trolley test platform, a column, an unfolding locking device, a trolley bottom plate and a trolley pulley, four trolley pulleys are fixed on the lower part of the trolley bottom plate, and there There are four uprights connected, and each upright is hinged together by the upper upright and the lower upright through a screw or a pin shaft, and an unfolding locking device is arranged at the hinge of the upper upright and the lower upright; the upper end of the upper upright is hinged On the trolley test platform, the lower end of the lower column is hinged with the trolley floor and the corresponding trolley pulley; the middle part of the side of the trolley floor is provided with a folding and locking device for the column; it has the characteristics of simple structure and convenient use; it is relatively It is suitable for the electrical equipment maintenance test work site in the power system, which greatly improves the work efficiency, safety and reliability of the power system maintenance test.

Description

A foldable maintenance test trolley

technical field

The invention relates to a foldable maintenance test trolley, which belongs to the field of electric equipment tools.

Background technique

In the power system, maintenance tests such as high-voltage tests and protection checks for related power equipment account for a large proportion of daily power substation operation and maintenance work. At present, when maintenance and test personnel carry out maintenance and test work on related equipment, they always place the test equipment on the ground near the equipment to be repaired, and the maintenance test personnel use a half-squat or full-squat posture to complete the wiring and control of the equipment. Waiting for operations, so that the instruments and equipment are placed on the ground, and the experimenters adopt the half-squat or full-squat maintenance and test operation mode, which makes the operation inconvenient for the staff, and the personnel are prone to fatigue, which is not conducive to safe production. Moreover, in order to shorten the power outage time, the current substation often adopts a multi-interval centralized maintenance method, and the maintenance and test work of multiple equipment is carried out together, and the working hours are long. It will increase the workload, reduce work efficiency, prolong the power outage time, and easily cause the omission of test tools. In addition, there are strict requirements for the placement angle of some test instruments and meters (for example, the error between most test equipment and the horizontal angle cannot exceed 5°), and the ground of some substation test sites is uneven, so it may be possible to place the test instruments directly on the ground. As a result, the placement of instruments and meters does not meet the requirements, resulting in problems such as reduced accuracy and reliability of experimental results. These have become problems that cannot be ignored in the work efficiency, safety and reliability of the limited maintenance test.

Contents of the invention

The object of the present invention is to overcome the above-mentioned shortcomings, and provide a foldable maintenance test trolley with simple structure and convenient use.

The present invention is achieved through the following technical solutions: the foldable maintenance test trolley mainly includes a trolley test platform, a column, an unfolding locking device, a trolley bottom plate and a trolley pulley, and the lower part of the trolley bottom plate is fixed with four There are four uprights connected between the bottom plate of the trolley and the test platform of the trolley, and each upright is hinged together by the upper upright and the lower upright through a screw or a pin, and an expansion joint is provided at the hinge of the upper upright and the lower upright. locking device.

The upper end of the upper column is hinged to the test platform of the trolley, and the lower end of the lower column is hinged to the bottom plate of the trolley and the corresponding pulley of the trolley; the middle part of the side of the bottom plate of the trolley is provided with a folding locking device for the column.

The expansion locking device provided at the hinge of the upper column and the lower column is composed of an upper pin shaft that can be connected in series in the corresponding pin holes on the upper column and the lower column at the hinge; It can be connected in series to the side of the bottom plate of the trolley and the lower pin shaft in the corresponding pin hole on the column to form a foldable and retractable locking device.

The invention has the characteristics of simple structure, convenient use and the like; it is better applicable to the work site of the maintenance test of electrical equipment in the power system, and greatly improves the work efficiency, safety and reliability of the power system maintenance test.

Description of drawings

Figure 1 is a schematic front view of the present invention.

Fig. 2 is a schematic diagram of the unfolded side of the present invention.

Fig. 3 is a schematic diagram of the half-folded state of the present invention.

Fig. 4 is a schematic diagram of the fully folded state of the present invention.

Detailed ways

The present invention will be described in detail below in conjunction with the accompanying drawings: As shown in Figures 1-4, the foldable maintenance test trolley of the present invention mainly includes a trolley test platform 1, a column 2, an unfolding locking device 3, and a trolley floor 4 And dolly pulley 6, described dolly floor 4 bottoms are fixed with four dolly pulleys 6, and there are four columns 2 connected between the dolly floor 4 and the dolly test platform 1, and each column 2 is formed by upper column 21 and lower column 22 are hinged together by screw rods or pin shafts 23, and a deployment locking device 3 is provided at the hinge of the upper column 21 and the lower column 22.

The upper end of the upper column 21 is hinged to the lower part of the trolley test platform 1, and the lower end of the lower column 22 is hinged to the trolley floor 4 and the corresponding trolley pulley 6; Locking device 5.

The deployment locking device 3 provided at the hinge of the upper column 21 and the lower column 22 is composed of an upper pin shaft that can be connected in series in the corresponding pin hole 31 on the upper column 21 and the lower column 22 of the hinge; The middle part of the side of the bottom plate 4 is provided with a foldable locking device 5 composed of a lower pin shaft connected in series to the side of the trolley bottom plate 4 and the corresponding pin hole 51 on the column 2 .

Embodiment: Referring to Fig. 1, a foldable maintenance test trolley is mainly composed of a trolley test platform 1, a column 2, an unfolding locking device 3, a trolley floor 4, a folding and retracting locking device 5, and a trolley pulley 6.

In the maintenance test of electrical equipment in substations, especially during centralized maintenance, when using the foldable maintenance test trolley, the trolley in a fully folded state is now transported to the maintenance test work site, placed at a suitable working place, and opened on the bottom plate of the trolley. 4 Fold the locking device 5 on the side, and unfold the trolley, so that the upper and lower parts of the column 2 are in a vertical state, and operate the unfolding locking device 3, so that the connection between the upper and lower parts of the column remains fixed during the working process, The side view of the trolley when it is unfolded is shown in Figure 2. Place the test equipment needed for the current work on the test platform 1 of the trolley, and the staff can stand in front of the trolley to operate the test equipment to carry out the test after connecting the test line between the electrical equipment to be tested and the test equipment. When the work site needs to be transferred, other auxiliary test tools can be placed on the bottom plate 4 of the trolley, and the pulley 6 of the trolley can be pushed to rotate, and the equipment and auxiliary test tools can be transferred to a new test site with a foldable maintenance test trolley. When the test work is over, after cleaning up the items on the trolley test platform 1 and the trolley bottom plate 4, release the locking device 3, and operate the joint of the upper and lower parts of the column 2 to rotate toward the inner side of the trolley to make it fold, foldable maintenance test The semi-folded state of the trolley is shown in Figure 3. When the trolley is in a fully folded state, as shown in Figure 4, the trolley test platform 1 and the trolley bottom plate 4 are basically in a close state, and the folding and retracting locking device 5 located in the middle of the trolley bottom plate 4 is operated to lock the trolley test platform 1 On the dolly floor 4. This can facilitate the handling of the trolley and reduce the space occupied by the foldable maintenance trolley during the handling process.

Claims (3)

1. a Foldable overhaul test cart, it mainly comprises dolly test platform, column, expansion Locking Device, little car bottom plate and little pulley sheave, it is characterized in that described dolly base plate bottom is fixed with four little pulley sheaves, between little car bottom plate and dolly test platform, be connected to four root posts, every root post is hinged by screw rod or bearing pin by upper pillar stand and lower pillar stand, and is provided with expansion Locking Device in the hinged place of upper pillar stand and lower pillar stand.

2. Foldable overhaul test cart according to claim 1, is characterized in that the upper end of described upper pillar stand is articulated with dolly test platform, and the lower end of lower pillar stand and little car bottom plate and corresponding little pulley sheave are hinged; Described middle part, dolly base plate side is provided with the folding stow lock locking apparatus for column.

3. Foldable overhaul test cart according to claim 1, is characterized in that the expansion Locking Device that the hinged place of described upper pillar stand and lower pillar stand arranges, and is that the upper pin in respective pin hole on can being serially connected in hinged place upper pillar stand and lower pillar stand forms; Middle part, described dolly base plate side is provided with the folding stow lock locking apparatus that the lower bearing pin in respective pin hole on can being serially connected in dolly base plate side and column forms.