Grounding electricity testing trolley

Abstract

The utility model relates to the technical field of special equipment for switching devices, in particular to a grounding electricity testing trolley. The grounding electricity testing trolley comprises a chassis vehicle and a frame installed on the chassis vehicle, the frame is provided with a guiding sliding rail along the longitudinal direction, a contact arm installation beam is installed on the guiding sliding rail in a guiding mode, contact arms are arranged on the contact arm installation beam, the contact arms are communicated through a diversion row, and a grounding device is arranged on the chassis vehicle. The top of the frame is provided with a hoisting mechanism which is used for adjusting the contact arm mounting beam up and down so as to adjust the contact arm mounting beam to an upper grounding position and a lower grounding position. According to the utility model, the lifting mechanism is arranged at the top of the frame, so that the lifting adjusting mechanism of the grounding electricity testing trolley is simple in structure and convenient to install.

Description

Technical Field

[0001] The utility model relates to the technical field of special equipment for switch devices, in particular to a grounding and electricity testing trolley. Background Art

[0002] With the increasing use of switchgear, on-site maintenance requires an upper grounding trolley for inspecting an entire switchgear section or busbar compartment, while a lower grounding trolley is used for inspecting a single switchgear unit (excluding the busbar compartment). This process requires multiple push-in and push-out of the grounding trolley and handcart, and a pre-maintenance electrical test trolley is also required. This maintenance process requires multiple tools and cumbersome steps. To avoid the need for multiple push-in and push-out trolleys, the prior art typically combines upper and lower grounding trolleys to achieve their respective functions.

[0003] The Chinese invention patent application document with application publication number CN117543410A and application publication date 2024 / 02 / 09 discloses a multi-dimensionally adjustable grounding trolley, which includes a frame installed on a trolley base, vertical lifting guide rods are respectively provided at the left and right side panels of the frame, and a vertical screw rod is installed next to one of the vertical lifting guide rods, a motor is provided at the bottom of the vertical screw rod, and a decorative panel for shielding the motor is provided above the motor, and the two ends of the decorative panel are respectively installed on the left and right side panels; it also includes a baffle, one end of the baffle is installed on the vertical screw rod and the other end is installed on the vertical lifting guide rod, and the motor controls the lifting and lowering of the baffle through one end installed on the vertical lifting guide rod to realize the mutual switching of the upper contact arm grounding and the lower contact arm grounding functions.

[0004] The multi-dimensionally adjustable trolley switches between upper and lower contact arm grounding functions by controlling a vertical lift module. However, the vertical adjustment function is achieved through the lift module, which includes a vertical lift guide rod, a vertical lead screw, a motor, and a baffle. The module is located on the left and right side panels of the frame, making it complex and difficult to install. Utility Model Content

[0005] The purpose of the utility model is to provide a grounding and electric testing trolley, which solves the technical problems of complex structure of the lifting and adjusting mechanism and inconvenient installation in the upper and lower grounding trolleys.

[0006] To achieve the above purpose, the present invention provides a technical solution for a grounding and electrical testing vehicle:

[0007] A grounding and electrical testing trolley comprises a chassis and a frame mounted on the chassis. The frame is provided with a guide rail in the longitudinal direction. A contact arm mounting beam is guided and mounted on the guide rail. Contact arms are provided on the contact arm mounting beam. The contact arms are connected by a guide bar. A grounding device is provided on the chassis. A lifting mechanism is provided on the top of the frame for adjusting the contact arm mounting beam up and down to adjust it to an upper grounding position and a lower grounding position.

[0008] Beneficial effects: The utility model provides a new grounding and electrical testing trolley. Compared with the prior art, the present application sets a lifting mechanism on the top of the frame for adjusting the position of the contact arm mounting beam. The contact arm mounting beam is raised and lowered along the guide rail through the lifting mechanism. There is no other structure on the top, and the space is spacious, which is convenient for the installation and operation of the lifting mechanism.

[0009] Furthermore, the lifting mechanism is a pulley mechanism.

[0010] Furthermore, the pulley mechanism includes a fixing rod fixed to the top of the frame and a lifting pulley assembly installed on both sides of the fixing rod.

[0011] Furthermore, the grounding device is a vertically extending grounding bar having an upper connection position and a lower connection position. When the lifting mechanism lifts the contact arm mounting beam to the upper grounding position or the lower grounding position, the guide bar corresponds to the upper and lower connection positions respectively to be connected to the grounding bar.

[0012] Furthermore, the guide bar is a horizontal E-shaped structure, which includes a horizontal section and three parallel vertical sections, and the three parallel vertical sections are respectively connected to the three-phase contact arms.

[0013] Furthermore, the guide bar is arranged at the rear end of the three-phase contact arm, and the grounding bar is arranged at the front side of the guide bar and close to the horizontal section.

[0014] Furthermore, there are two guide rails which are arranged in parallel, and both ends of the contact arm mounting beam are guided and mounted on the two parallel guide rails.

[0015] Furthermore, the two parallel guide rails are provided with positioning locking devices for locking both ends of the contact arm mounting beam on the guide rails after the contact arm mounting beam is adjusted to a suitable position.

[0016] Furthermore, the positioning locking device is a locking pin.

[0017] Furthermore, a charge indicator is installed on the vehicle frame, and the contact arm is installed on the contact arm mounting beam through a sensor, and the sensor is electrically connected to the charge indicator. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1This is a structural diagram of an embodiment of a grounding and electrical testing trolley of the present utility model;

[0019] Figure 2 for Figure 1 Front view of

[0020] Figure 3 for Figure 1 Side view without the pulley mechanism.

[0021] In the figure: 1. Chassis; 2. Frame; 3. Contact arm mounting beam; 4. Guide rail; 5. Contact arm; 6. Guide bar; 7. Ground bar; 8. Pulley mechanism; 9. Upper connection position; 10. Lower connection position; 11. Power display; 12. Sensor; 13. Vertical plate. DETAILED DESCRIPTION

[0022] The features and performance of the present invention are further described in detail below in conjunction with the embodiments.

[0023] The utility model is mainly designed for a grounding and electrical testing trolley designed for the maintenance of switch cabinets. The main concept is: the adjustment structure for adjusting the upper grounding and lower grounding positions is designed as a lifting mechanism, and the lifting mechanism is designed on the top of the frame. At the same time, corresponding guide rails are designed on the frame to facilitate guidance during adjustment. After adjusting to the corresponding position, it is locked and fixed by a directional locking device arranged on the guide rail, and then upper grounding or lower grounding is achieved through the grounding device.

[0024] Based on the above main ideas, the basic technical solution of the utility model of a grounding and electrical testing trolley is: Figure 1 and Figure 2 As shown, it includes a chassis 1 and a frame 2 installed on the chassis 1, the frame 2 includes a panel and two vertical plates 13 arranged on both sides of the panel, the frame 2 is provided with a guide rail 4 in the longitudinal direction, and a contact arm mounting beam 3 is guided and installed on the guide rail 4, and a contact arm 5 is provided on the contact arm mounting beam 3. By installing the three-phase contact arm 5 on the same contact arm mounting beam 3, it can be ensured that the contact arm 5 moves upward or downward synchronously, and a contact is provided on the contact arm 5. The three-phase contact arms 5 are connected through a guide bar 6. A grounding device is provided on the chassis 1, and a lifting mechanism for adjusting the contact arm mounting beam 3 up and down to adjust it to the upper grounding position and the lower grounding position is provided on the top of the frame 2. The contact arm mounting beam 3 is adjusted to a suitable position along the guide rail 4 by the lifting mechanism for grounding.

[0025] The following is explained through different embodiments:

[0026] The present invention provides a better embodiment. Figure 2As shown, the lifting mechanism is a pulley mechanism 8. In this embodiment, the lifting mechanism on the top of the frame 2 is further defined as a pulley mechanism 8. The pulley mechanism 8 is used to lift and adjust the position of the guide bar 6 so that it is adjusted to the appropriate position of the grounding device for grounding. This has a simple structure and is easy to install. Furthermore, the design of the pulley mechanism 8 on the top of the frame 2 saves space. In other embodiments, the lifting mechanism is a drum structure. Specifically, a drum is designed on the top of the frame 2, and a winding rope and a motor are installed on the drum. The motor drives the drum to rotate, driving the winding rope to adjust the vertical elevation of the contact arm mounting beam.

[0027] In one embodiment, the pulley mechanism 8 is a set of lifting pulleys arranged on the top of the frame 2. A set of lifting pulleys can also achieve the corresponding lifting function. The present utility model provides a better embodiment, such as Figure 2 As shown, it is further defined that the pulley mechanism 8 includes a fixed rod fixed on the top of the frame 2 and a lifting pulley group installed on both sides of the fixed rod, and the pulley group is provided with a lifting component for connecting the contact arm mounting beam 3 during lifting, so that the lifting pulley group can be quickly connected to the contact arm mounting beam 3 during lifting, and the lifting operation can be performed safely and reliably.

[0028] In one embodiment, the grounding device is a grounding wire, such as the grounding wire described in the Chinese invention patent application document with application publication number CN117543410A and application publication date 2024 / 02 / 09 in the background technology. The grounding wire is a soft wire, one end of which connects the three-phase contact arm and the other end is connected to the chassis vehicle. The use of this grounding wire can also achieve the corresponding grounding function, but because the grounding wire is a soft wire, when the contact arm mounting beam 3 is lifted up and down, the grounding wire will bend and its bending direction is uncertain. At this time, the grounding wire will be entangled with other components in the frame 2, thereby causing interference. For this purpose, the present application provides a better embodiment, such as Figure 2 As shown, the grounding device is a vertically extending grounding bar 7. Since the grounding bar 7 has a certain rigidity, the grounding bar 7 is used without interference when performing the corresponding lifting operation of the contact arm mounting beam 3. The grounding bar 7 has an upper connection position 9 and a lower connection position 10. When the lifting mechanism lifts the contact arm mounting beam 3 to the upper grounding position or the lower grounding position, the guide bar 6 corresponds to the upper and lower connection positions respectively to connect to the grounding bar 7. In this embodiment, the grounding bar 7 can be a grounding copper bar or a grounding aluminum bar. The use of such a grounding bar with a certain rigidity facilitates setting fixed upper and lower grounding positions on the grounding bar, and can effectively avoid interference between components during the lifting operation.

[0029] In one embodiment, the guide bar 6 is a straight-line structure, and the straight-line guide bar 6 is connected to the three-phase contact arms at the same time. The present invention provides a better embodiment, such as Figure 2As shown, the guide bar 6 is a horizontal E-type structure, which includes a horizontal section and three parallel vertical sections. The three parallel vertical sections are respectively used to connect the three contact arms 5 so that the contact arms 5 are connected to each other. Bolt holes are provided on the horizontal section below the guide bar 6 to connect the guide bar 6 to the grounding bar 7 through bolts when the guide bar 6 is adjusted to the upper connection position 9 or the lower connection position 10.

[0030] This application provides a better embodiment, such as Figure 2 As shown, the guide bar 6 is disposed at the rear end of the three-phase contact arm 5, and the grounding bar 7 is disposed in front of the guide bar 6 and adjacent to the horizontal section. The grounding bar 7 has bolt holes at the upper connection position 9 and the lower connection position 10, respectively, for connection to the guide bar 6 via bolts during grounding. In this embodiment, the specific positions of the guide bar 6 and the grounding bar 7 are further defined to ensure that the guide bar 6 is accurately aligned with the upper grounding position 9 or the lower grounding position 10 on the grounding bar 7 during lifting and adjustment, and is securely connected via bolts.

[0031] In one embodiment, there is only one guide rail 4 and it is prismatic. The guide rail 4 is set in the middle of the frame 2. The contact arm mounting beam 3 guides and slides on the guide rail 4. By designing the guide rail as a prismatic shape, the contact arm mounting beam 3 is prevented from rotating during the guide sliding. This structure can also achieve a guiding effect in the up and down direction. The present utility model provides a better embodiment, such as Figure 2 As shown, there are two guide rails 4, which are arranged parallel to each other on the inner sides of the two vertical plates 13 of the frame 2. The two ends of the contact arm mounting beam 3 are guided and mounted on the two parallel guide rails 4. Compared with using a single guide rail 4, using two guide rails 4 will not cause tilting during the lifting operation, making the guiding function more reliable and stable.

[0032] The present utility model provides a better embodiment, in which the two parallel guide rails 4 are provided with a positioning locking device, which is used to lock the two ends of the contact arm mounting beam 3 on the guide rails 4 after the contact arm mounting beam 3 is adjusted to a suitable position, so as to prevent the contact arm mounting beam 3 from sliding downward under the action of gravity.

[0033] The present invention provides a more preferred embodiment, wherein the positioning locking device is a locking pin. Two parallel guide rails 4 are provided with positioning pin holes at positions corresponding to the upper grounding position and the lower grounding position. When the contact arm mounting beam 3 is adjusted to the positioning pin holes, its ends are locked by locking pins that match the positioning pin holes. In this embodiment, the positioning locking device is a locking pin, which not only realizes the locking function but also realizes the positioning function by providing the positioning pin holes on the guide rails 4. In other embodiments, the positioning locking device is a spring positioning pin or a bolt fixing structure.

[0034] The present invention provides a better embodiment. Figure 3 As shown, a charge indicator 11 is installed on the vehicle frame 2, and the contact arm 5 is installed on the contact arm mounting beam 3 through the sensor 12, and the sensor 12 is electrically connected to the charge indicator 11. In this embodiment, the three contact arms 5 are installed on the contact arm mounting beam 3 through the sensor 12. On the one hand, the sensor 12 serves as an insulating support component to support the contact arm 5, and on the other hand, it serves as a signal transmission component to transmit the electrical signal received on the contact arm 5 to the charge indicator 11. Through the charge indicator 11, it can be understood whether the detected position is charged, so that the corresponding next step can be performed. In this embodiment, the design of the charge indicator 11 and the sensor 12 realizes the function of the corresponding electric test vehicle, making the function of the utility model more abundant, and the structure is simple and has good application prospects.

[0035] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. The scope of patent protection of the present invention shall be based on the claims. Any equivalent structural changes made using the description and drawings of the present invention shall also be included in the scope of protection of the present invention.

Claims

1. A grounding and electrical testing trolley, characterized in that: It includes a chassis and a frame installed on the chassis. The frame is provided with a guide rail in the longitudinal direction. A contact arm mounting beam is installed on the guide rail. Contact arms are provided on the contact arm mounting beam. The contact arms are connected by a guide bar. A grounding device is provided on the chassis. A lifting mechanism is provided on the top of the frame for adjusting the contact arm mounting beam up and down to adjust it to the upper grounding position and the lower grounding position.

2. The grounding and electrical testing trolley according to claim 1 is characterized in that: The lifting mechanism is a pulley mechanism.

3. The grounding and electrical testing trolley according to claim 2, characterized in that: The pulley mechanism comprises a fixing rod fixed on the top of the frame and a lifting pulley assembly installed on both sides of the fixing rod.

4. The grounding and electrical testing trolley according to claim 1 is characterized in that: The grounding device is a vertically extending grounding bar having an upper connection position and a lower connection position. When the lifting mechanism lifts the contact arm mounting beam to the upper grounding position or the lower grounding position, the guide bar corresponds to the upper and lower connection positions respectively to be connected to the grounding bar.

5. The grounding and electrical testing trolley according to claim 4 is characterized in that: The guide bar is a horizontal E-shaped structure, which includes a horizontal section and three parallel vertical sections, and the three parallel vertical sections are respectively connected to the three-phase contact arms.

6. The grounding and electrical testing trolley according to claim 5, characterized in that: The guide bar is arranged at the rear end of the three-phase contact arm, and the grounding bar is arranged at the front side of the guide bar and close to the horizontal section.

7. The grounding and electrical testing vehicle according to any one of claims 1 to 6, characterized in that: There are two guide rails which are arranged in parallel with each other, and both ends of the contact arm mounting beam are guided and mounted on the two parallel guide rails.

8. The grounding and electrical testing trolley according to claim 7 is characterized in that: The two parallel guide rails are provided with positioning locking devices for locking both ends of the contact arm mounting beam on the guide rails after the contact arm mounting beam is adjusted to a suitable position.

9. The grounding and electrical testing trolley according to claim 8, characterized in that: The positioning locking device is a locking pin.

10. The grounding and electrical testing vehicle according to any one of claims 1 to 6, characterized in that: A charged display is installed on the vehicle frame, and the contact arm is installed on the contact arm mounting beam through a sensor, and the sensor is electrically connected to the charged display.

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