An intelligent electrical testing and grounding trolley for switch cabinets

Abstract

The present invention discloses an intelligent electrical testing and grounding trolley for a switch cabinet, comprising an electrical connection trolley, a guard plate, an insulator, an audible alarm device and an electrical testing device. A plurality of movable cutter heads are installed in the middle of the guard plate at a position facing above the electrical connection trolley, a conductive part is installed between each insulator and the audible alarm device, a static cutter head is installed on each conductive part, and the movable cutter head is coaxially controlled by a rotating shaft. When the third gear of the intelligent electrical testing and grounding trolley for the switch cabinet rotates, the third rack is driven to move toward the switch cabinet, and then the propulsion groove drives the sliding roller to slide on the movable cutter head. When the sliding roller slides on the movable cutter head, the movable cutter head is driven to rotate and rise on the rotating shaft. After a few seconds, the third rack is located at one end of the limit slot switch cabinet, and finally the third rack is reset by the retraction of the second spring, and the movable cutter head and the static cutter head are separated, so that the trolley does not need to manually close the movable cutter head and the static cutter head to test whether the switch cabinet is energized.

Description

Technical Field

[0001] The present invention relates to the technical field of electric testing vehicles, in particular to an intelligent electric testing and grounding vehicle for a switch cabinet. Background Art

[0002] The prior art discloses an intelligent electrical testing and grounding trolley for a switch cabinet, which includes a swing-in mechanism, a mounting bracket, a grounding mechanism, a movable blade, a voice alarm device, an electrical testing device, a static blade, a voltage sensing device, a mechanical interlocking device, a power display device, an electric module and an electrical interlocking device. The technology currently has two working modes, electric and manual. The existing invention can test the current when the trolley contacts the switch cabinet. The electric module test device is connected to the voltage sensing device through a conductive member to test the current on the switch cabinet housing. If the switch cabinet is energized, the warning light of the power display device lights up and the voice alarm device sounds an alarm. Conversely, if the switch cabinet is not energized, the grounding mechanism needs to be electrically controlled to rotate so that the movable blade and the static blade contact each other. The trolley can only detect and alarm when the movable blade and the static blade contact each other. The device uses both electric and manual control. When the test device contacts the switch cabinet, if the electric module is used for a long time or stored improperly, the electronic components on the electric module are damaged, and the movable blade and the static blade cannot be driven into contact. After contact, it is impossible to determine whether the switch cabinet is energized. At this time, manual operation is required when the electronic components are damaged. The trolley must be returned to the origin and manually moved to contact the movable blade and the static blade. Finally, the test device must be brought into contact with the switch cabinet. This operation is very cumbersome. To this end, we propose an intelligent test and grounding trolley for switch cabinets. Summary of the Invention

[0003] The object of the present invention is to provide an intelligent electrical testing and grounding trolley for a switch cabinet to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an intelligent electrical testing and grounding trolley for switch cabinet, comprising an electrical connection trolley, a guard plate, an insulator, an audible alarm device and an electrical testing device, a plurality of movable cutter heads are installed in the middle of the guard plate at a position facing above the electrical connection trolley, a conductive member is installed between each insulator and the audible alarm device, a static cutter head is installed on each conductive member, the movable cutter head is coaxially controlled by a rotating shaft, a trigger device is provided inside the electrical testing device on both sides of the guard plate, a doubling stroke device is installed on the trigger device, and a device for delaying the control of the movable cutter head is installed on the top of the electrical connection trolley. A time delay device for closing between the cutter head and the static cutter head; the time delay device includes a support plate provided on the static cutter head, a clockwork spring provided on the support plate, a pair of limit rollers provided on the support plate, a return pawl rotatably connected to the support plate and located between the pair of clockwork springs, a ratchet rotatably connected to the bottom of the support plate, and a return device provided on the top of the power connection vehicle and driven by the ratchet to bring the moving cutter head close to the static cutter head. A third gear is connected to the middle shaft of the ratchet. The time delay device drives the third gear to rotate by the ratchet to set a rated time for the moving cutter head and the static cutter head to contact, thereby preventing electric shock when the power is manually connected.

[0005] Preferably, each movable cutter head is slidably connected to a sliding roller, and the return device includes a slide groove provided on the top of the electric connecting car, a sliding bracket slidably connected to the top of the slide groove, a propulsion groove provided on the top of the sliding bracket to drive the sliding roller to move on the movable cutter head, a third rack connected to the sliding bracket by a pin, and a reset device provided on one side of the top of the slide groove for resetting the third rack movement; the reset device includes a limit groove provided on the top of the slide groove, a second spring provided between the limit groove and the third rack, a fixed plate fixed on one side of the top of the slide groove, a plurality of limit groove brackets fixed in the middle of the slide groove, and a plurality of limit grooves provided on the same height section of the top of the limit groove bracket. A slider movable inside the limit groove is installed at the bottom of the third rack, and the reset device ensures that the device can reset the third rack after the movable cutter head and the static cutter head are separated, thereby preventing the third rack from having to be manually reset in the trolley after testing the electricity.

[0006] Preferably, the trigger device includes a fixed ring arranged on the inner ring of the electrical testing device, a first spring fixed to the fixed ring on the side facing the outlet of the electrical testing device, a movable iron sheet fixed to one end of the first spring, a movable rod arranged on the axis of the movable iron sheet and passing through the fixed ring, and a limiting ring arranged on the movable rod on the side close to the fixed ring. The movable iron sheet is in contact with the switch cabinet to facilitate power supply.

[0007] Preferably, the doubling stroke device includes a pair of moving rods arranged at the bottom of the movable rod, a first gear rotatably connected between the two moving rods, a mounting plate arranged at the bottom of the electrical testing device, a first rack fixed on the mounting plate and meshing with the first gear, and a movable rod movably arranged on the mounting plate, the movable rod being provided with a slot matching the outer teeth of the first gear; wherein the movable rod drives the movable rod to move synchronously by rotating on the first rack, thereby facilitating the extension of the movable stroke of the transmission connecting rod, so that the delay device can store power for a longer time.

[0008] Preferably, a ring is provided on the movable rod, one end of the ring is connected to a stepping ring parallel to the movable rod, one end of the stepping ring is connected to a pair of transmission connecting rods, and the pair of transmission connecting rods are connected to a second rack in the middle of one end. The second rack is used to facilitate the driving force of the delay device, making the device more flexible to use.

[0009] Preferably, a rotating shaft is installed in the middle of the clockwork spring, one end of the rotating shaft is connected to a second gear meshing with the second rack, and the second gear drives the clockwork spring to rotate, making it convenient for the clockwork spring to store force.

[0010] Preferably, at least four outer teeth of the first gear correspond to a slot on the movable rod, so as to facilitate lengthening the stroke.

[0011] Preferably, the stroke of the movable rod is twice that of the movable iron sheet. Doubling the stroke can double the stroke of the transmission connecting rod, thereby setting a longer time for the delay device.

[0012] Preferably, a voltage sensing device is installed at the bottom of each conductive member, which is an auxiliary detection device to facilitate the detection of voltage strength.

[0013] Preferably, the guard plate is provided with a stop spring at the bottom of each movable cutter head, which is used to limit the descending angle of the movable cutter head when the movable cutter head is reset, and to prevent the movable cutter head from being reset excessively, so that the sliding roller is separated from itself.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] The present invention drives the movable rod to move by moving the iron sheet and squeezing the electrical testing device, pushing the first gear to rotate, and the movable rod in the device is driven by the first gear to move and extend the moving path of the transmission connecting rod, extend the timing time of the spring spring, and energize the device. When the iron sheet contacts the electrical testing device, the movable rod stops moving, the spring spring withdraws the force, and drives the ratchet to rotate clockwise, and then drives the third gear to rotate. When the third gear rotates, it drives the third rack to move toward the switch cabinet, and then drives the propulsion slot to drive the sliding roller to slide on the moving cutter head. When the sliding roller slides on the moving cutter head, it drives the moving cutter head to rotate and rise on the rotating shaft, and finally contacts the static cutter head. After a few seconds, the third rack is located at one end of the limit slot switch cabinet, and finally the second spring retracts to reset the third rack, and the moving cutter head and the static cutter head are separated, so that the trolley does not need to manually close the moving cutter head and the static cutter head to test whether the switch cabinet is energized. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0017] Figure 2 This is a schematic diagram of the overall back structure of the present invention;

[0018] Figure 3 This is a schematic diagram of the doubling stroke device of the present invention;

[0019] Figure 4 This is a schematic diagram of point A of the present invention;

[0020] Figure 5 Schematic diagram of the time delay device of the present invention;

[0021] Figure 6 Schematic diagram of the reset device of the present invention;

[0022] Figure 7 This is a schematic diagram of point B of the present invention;

[0023] Figure 8 This is a disassembled schematic diagram of the reset device of the present invention;

[0024] Figure 9 It is a plan view of the reset device of the present invention.

[0025] In the figure: 1-trolley; 2-guard plate; 3-electricity testing device; 4-sound alarm device; 5-insulator; 6-voltage sensing device; 7-conductive member; 8-moving blade; 801-sliding roller; 9-stationary blade; 10-movable iron sheet; 11-first spring; 12-fixing ring; 13-limiting ring; 14-moving rod; 15-first rack; 16-first gear; 17-moving rod; 18-stepping ring; 19-transmission connecting rod; 20-second rack; 21-spring spring; 2105-limiting roller; 22-second gear; 2205-return pawl; 23-ratchet; 24-third gear; 25-third rack; 26-advancing groove; 27-sliding bracket; 28-slide groove; 29-fixing plate; 30-second spring; 31-limiting groove; 32-limiting groove bracket. DETAILED DESCRIPTION

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] See also Figure 1-9 The present invention provides a technical solution: an intelligent electrical testing and grounding trolley for switch cabinets, comprising a connecting trolley 1, a guard plate 2, an insulator 5, a sound alarm device 4 and an electrical testing device 3. A plurality of movable cutter heads 8 are installed in the middle of the guard plate 2 at a position above the connecting trolley 1. A conductive member 7 is installed between each insulator 5 and the sound alarm device 4. A static cutter head 9 is installed on each conductive member 7. The movable cutter heads 8 are coaxially controlled by a rotating shaft. A trigger device is provided inside the electrical testing device 3 on both sides of the guard plate 2, and a doubling stroke device is installed on the trigger device. A time delay device for delaying the closing of the moving blade 8 and the static blade 9 is installed on the top of the connecting tram 1. When the device is in use, a trigger device is first installed on the electrical test device 3. When the trigger device contacts the switch cabinet, the two are squeezed against each other, causing the doubling stroke device to drive the delay device for timing. When the two contact each other, the delay device removes the force, connecting the moving blade 8 and the static blade 9 for a certain period of time. The device is powered and grounded, so that the contact head of the electrical test device 3 is energized, and then the sound alarm device 4 generates an alarm. The details are as follows:

[0028] The delay device includes a support plate provided on the static blade head 9, a spring spring 21 provided on the support plate, a pair of limiting rollers 2105 provided on the support plate, a recoil pawl 2205 rotatably connected to the support plate and located between the pair of spring springs 21, a ratchet 23 rotatably connected to the bottom of the support plate, and a recoil device provided on the top of the trolley 1 and driven by the ratchet 23 to make the movable blade head 8 close to the static blade head 9. The middle axis of the ratchet 23 is connected to the third gear 24. The spring spring 21 rotates after being driven, so that the two large and small balls connected in series drive the recoil pawl 2205 to swing left and right between the two limiting rollers 2105, similar to the movement of a pendulum clock. When the recoil pawl 2205 swings, it drives the ratchet 23 to rotate clockwise. Since the third gear 24 and the ratchet 23 are coaxially connected, when the ratchet 23 and the third gear 24 have the same rotation angle, the third gear 24 can drive the recoil device to slowly close the static blade head 9 and the movable blade head 8 together.

[0029] Each of the movable cutter heads 8 is slidably connected to a sliding roller 801, and the recoil device includes a chute 28 provided on the top of the trolley 1, a sliding bracket 27 slidably connected to the top of the chute 28, a propulsion groove 26 provided on the top of the sliding bracket 27 for driving the sliding roller 801 to move on the movable cutter head 8, a third rack 25 connected to the sliding bracket 27 by a latch, and a reset device provided on one side of the top of the chute 28 for resetting the third rack 25. When the third gear 24 rotates, the third rack 25 is slowly driven to move toward the switch cabinet. When the third rack 25 moves, the sliding bracket 27 is driven to slide on the sliding groove 28. The sliding bracket 27 drives the propulsion groove 26 to move toward the switch cabinet. During the movement, the sliding roller 801 can be driven to move toward the static cutter head 9. At the same time, the sliding roller 801 drives the movable cutter head 8 to rise slowly during the movement. After the movable cutter head 8 and the static cutter head 9 come into contact, the third gear 24 and the third rack 25 are separated within a few seconds. After these few seconds, the third rack 25 returns to the original point through the reset device. The implementation method is as follows:

[0030] The reset device includes a limit slot 31 provided at the top of the slide slot 28, a second spring 30 provided between the limit slot 31 and the third rack 25, a fixed plate 29 fixed to one side of the top of the slide slot 28, a plurality of limit slot brackets 32 fixed to the middle of the slide slot 28, and a plurality of limit slots 31 provided on the same height section of the top of the limit slot bracket 32. A slider movable inside the limit slot 31 is installed at the bottom of the third rack 25. In the above, when the contact between the movable cutter head 8 and the static cutter head 9 cannot make the third rack 25 return to the origin, the second spring 30 is in a semi-stretched state when connected to the third rack 25. When the third rack 25 moves away from the original position and the third rack When the connection between 25 and the sliding bracket 27 is at one end of the limit slot 31, the second spring 30 can drive the third rack 25 to be stretched and reset after the movable cutter head 8 and the static cutter head 9 are in contact for a few seconds. As can be seen from Figure 9, the second spring 30 and the third rack 25 are in an inclined state when connected. When the second spring 30 pulls the third rack 25 to reset, the second spring 30 will be centered at one end of the limit slot 31, and then drive the third rack 25 to reset to the origin. Since the limit slot 31 is in an inclined state and the second spring 30 is in a semi-stretched state when resetting, the second spring 30 drives the slider at the bottom of the third rack 25 so that the third rack 25 is automatically centered to the origin.

[0031] The trigger device includes a fixed ring 12 provided on the inner ring of the test device 3, a first spring 11 fixed to the fixed ring 12 on the side facing the outlet of the test device 3, a movable iron sheet 10 fixed to one end of the first spring 11, a movable rod provided on the axis of the movable iron sheet 10 and passing through the fixed ring 12, and a limit ring 13 provided on the movable rod on the side close to the fixed ring 12. When the movable iron sheet 10 contacts the switch cabinet to squeeze the test device 3, the movable blade head 8 and the static blade head 9 contact after a few seconds, and the whole body has electricity. After a few seconds, the movable blade head 8 and the static blade head 9 separate, the sound alarm device 4 stops alarming, and the trolley can be separated from the switch cabinet.

[0032] The doubling stroke device includes a pair of movable rods 14 provided at the bottom of the movable rod, a first gear 16 rotatably connected between the two movable rods 14, a mounting plate provided at the bottom of the electro-test device 3, a first rack 15 fixed to the mounting plate and meshing with the first gear 16, and a movable rod 17 movably provided on the mounting plate. The movable rod 17 is provided with a slot matching the external teeth of the first gear 16. When the movable iron sheet 10 contacts the switch cabinet to squeeze the electro-test device 3, the first gear 16 is driven to rotate. When the first gear 16 rotates, it abuts against the first rack 15. When the first gear 16 moves, the movable rod 17 is driven to move.

[0033] The moving rod 14 drives the movable rod 17 to move synchronously by rotating on the first rack 15 .

[0034] A ring is sleeved on the movable rod 17, one end of the ring is connected to a stepping ring 18 parallel to the movable rod 17, one end of the stepping ring 18 is connected to a pair of transmission connecting rods 19, and the pair of transmission connecting rods 19 are connected to a second rack 20 in the middle of one end. When the movable rod 17 moves toward the guard plate 2, the stepping ring 18 is driven to move synchronously, causing the transmission connecting rod 19 to rotate, and then the second rack 20 approaches the switch cabinet.

[0035] A rotating shaft is installed in the middle of the clockwork spring 21, and one end of the rotating shaft is connected to the second gear 22 meshing with the second rack 20. In the overall implementation, the second rack 20 drives the second gear 22 to power the delay device.

[0036] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0037] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. An intelligent electrical testing and grounding trolley for a switch cabinet, comprising a grounding trolley (1), a guard plate (2), an insulator (5), an audible alarm device (4) and an electrical testing device (3), characterized in that: A plurality of movable blades (8) are installed in the middle of the guard plate (2) at a position facing the upper part of the connecting vehicle (1), a conductive member (7) is installed between each insulator (5) and the sound alarm device (4), and a static blade (9) is installed on each conductive member (7). The movable blade (8) is coaxially controlled by a rotating shaft. A trigger device is provided inside the electric test device (3) on both sides of the guard plate (2), and a doubling stroke device is installed on the trigger device. A delay device for delaying the closing between the movable blade (8) and the static blade (9) is installed on the top of the connecting vehicle (1); The delay device comprises a support plate provided on the stationary cutter head (9), a spring spring (21) provided on the support plate, a pair of limiting rollers (2105) provided on the support plate, a recoil pawl (2205) rotatably connected to the support plate and located between the pair of spring springs (21), a ratchet (23) rotatably connected to the bottom of the support plate, and a recoil device provided on the top of the electric vehicle (1) and driven by the ratchet (23) to move the movable cutter head (8) close to the stationary cutter head (9), wherein the middle shaft of the ratchet (23) is connected to a third gear (24); Each movable cutter head (8) is slidably connected to a sliding roller (801), and the reentry device includes a slide groove (28) provided on the top of the electric vehicle (1), a sliding bracket (27) slidably connected to the top of the slide groove (28), a propulsion groove (26) provided on the top of the sliding bracket (27) for driving the sliding roller (801) to move on the movable cutter head (8), a third rack (25) connected to the sliding bracket (27) through a pin, and a reset device provided on one side of the top of the slide groove (28) for resetting the third rack (25); The reset device comprises a limiting groove (31) provided at the top of the slide groove (28), a second spring (30) provided between the limiting groove (31) and the third rack (25), a fixed plate (29) fixed to one side of the top of the slide groove (28), a plurality of limiting groove brackets (32) fixed to the middle of the slide groove (28), and a plurality of limiting grooves (31) provided on the same height section of the top of the limiting groove brackets (32), and a slider movable inside the limiting groove (31) is installed at the bottom of the third rack (25).

2. The intelligent electrical testing and grounding trolley for switch cabinet according to claim 1, characterized in that: The trigger device comprises a fixed ring (12) arranged on the inner ring of the electric test device (3), a first spring (11) fixed to the fixed ring (12) on the side facing the outlet of the electric test device (3), a movable iron sheet (10) fixed to one end of the first spring (11), a movable rod arranged at the axis of the movable iron sheet (10) and passing through the fixed ring (12), and a limiting ring (13) arranged on the side of the movable rod close to the fixed ring (12).

3. The intelligent electrical testing and grounding trolley for switch cabinet according to claim 1 is characterized in that: The doubling stroke device comprises a pair of moving rods (14) arranged at the bottom of the movable rod, a first gear (16) rotatably connected between the two moving rods (14), a mounting plate arranged at the bottom of the electro-test device (3), a first rack (15) fixed to the mounting plate and meshing with the first gear (16), and a movable rod (17) movably arranged on the mounting plate, wherein the movable rod (17) is provided with a plurality of slots matching the outer teeth of the moving rod (14); The moving rod (14) drives the movable rod (17) to move synchronously by rotating on the first rack (15).

4. The intelligent electrical testing and grounding trolley for switch cabinet according to claim 3 is characterized in that: A collar is sleeved on the movable rod (17), one end of the collar is connected to a stepping ring (18) parallel to the movable rod (17), one end of the stepping ring (18) is axially connected to a pair of transmission connecting rods (19), and the pair of transmission connecting rods (19) are connected to a second rack (20) at the middle of one end.

5. The intelligent electrical testing and grounding trolley for switch cabinet according to claim 1 is characterized in that: A rotating shaft is installed in the middle of the clockwork spring (21), and one end of the rotating shaft is connected to a second gear (22) that meshes with the second rack (20).

6. The intelligent electrical testing and grounding trolley for switch cabinet according to claim 3, characterized in that: At least four external teeth of the first gear (16) correspond to a slot on the movable rod (17).

7. The intelligent switch cabinet electrical testing and grounding trolley according to claim 3 is characterized by: The travel of the movable rod (17) is twice that of the movable iron sheet (10).

8. The intelligent electrical testing and grounding trolley for switch cabinet according to claim 1, characterized in that: A voltage sensing device (6) is installed at the bottom of each conductive member (7).

9. The intelligent electrical testing and grounding trolley for switch cabinet according to claim 1, characterized in that: The guard plate (2) is provided with a blocking spring at the bottom of each movable cutter head (8).

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