Trolley switch cabinet test tooling

Abstract

The present invention discloses a trolley switch cabinet test tool, comprising a base and a test frame, wherein the test frame is arranged on one side of the base, and a plurality of first test heads, a plurality of second test heads and a plurality of third test heads are arranged on a side of the test frame close to the base, and two parallel first rails, two parallel second rails and two parallel third rails are arranged on the base, the two first rails are arranged between the two second rails, the first rail and the second rail are arranged between the two third rails, the height of the first rail is lower than the height of the second rail, and the height of the second rail is lower than the height of the third rail. By arranging the first rail, the second rail and the third rail, the trolley switch cabinet test tool can adapt to three commonly used specifications of trolley switch cabinets, so that the trolley switch cabinet test tool can detect three commonly used specifications of trolley switch cabinets, thereby expanding the scope of application of the trolley switch cabinet test tool.

Description

Technical Field

[0001] The invention relates to the field of switch cabinets, and in particular to a testing tool for a trolley switch cabinet. Background Art

[0002] The trolley switch cabinet is widely used in substations and other places because of its simple structure, high safety and reliability, flexible replacement, and easy maintenance. During operation, the contact area between the moving contact of the trolley switch cabinet and the static contact of the switch cabinet is small. The circular moving contact finger piece is closely contacted with the cylindrical static contact by the pressure of the contact finger spring. Affected by the load current of the switch cabinet and the contact force and contact area of ​​the moving and static contacts, the contact surface of the moving and static contacts is prone to heat defects, which may cause insulation failure of the switch cabinet in severe cases. If the moving contact and the static contact are not centered and offset occurs, the different tension of the contact finger spring on the moving contact will cause the pressure of each contact finger piece of the moving contact to be unequal with the static contact when the trolley switch cabinet is shaken from the test position to the operating position, causing the heating of the contact during operation. When the moving and static contacts are seriously misaligned, the trolley cannot be shaken to the required working position, or the contact finger and contact finger spring will be damaged by impact, which will cause serious heating failure after the switch cabinet is operated. Therefore, whether the moving and static contacts of the trolley switch cabinet are in good contact is an important performance technical indicator of the switch cabinet and an important link for maintenance personnel to inspect and accept the switch cabinet.

[0003] During the assembly, transportation, unloading and handling of the trolley switch cabinet in the factory, due to the influence of the three-phase pole assembly process, overall vibration and other factors, it is inevitable that there will be small moving contact phase tolerances and displacements that are not easy to detect. Due to the structural limitations of the trolley switch cabinet (metal enclosed structure), the inspectors cannot directly observe the alignment of the trolley switch moving contact and the switch cabinet static contact. They often make subjective judgments based on the friction marks between the contacts, and the actual situation of the alignment cannot be accurately judged, leaving safety hazards for the operation of the switch cabinet. Therefore, it is necessary to develop a tooling and method for the trolley switch contact alignment test, simulate the relative positions between the static contacts of various standard-sized trolley switch cabinets and between the static contacts and the trolley chassis rails, install each static contact and trolley chassis rail on the tooling, use the centering tooling instead of the switch cabinet to carry out the trolley switch cabinet alignment test, and quickly and conveniently find the trolley switch cabinet moving contact displacement problem. Summary of the invention

[0004] The purpose of the embodiment of the present invention is to provide a trolley switch cabinet test tool, which can adapt to trolley switch cabinets of various sizes.

[0005] To achieve the above object, the present invention adopts the following technical solutions:

[0006] A trolley switch cabinet test fixture is provided, comprising a base and a test frame, wherein the test frame is arranged on one side of the base, and a plurality of first test heads, a plurality of second test heads and a plurality of third test heads are arranged on a side of the test frame close to the base, and two parallel first rails, two parallel second rails and two parallel third rails are arranged on the base, the two first rails are arranged between the two second rails, the first rail and the second rail are arranged between the two third rails, the height of the first rail is lower than the height of the second rail, the height of the second rail is lower than the height of the third rail, the first rail, the second rail and the third rail are all perpendicular to the test frame, when the trolley switch cabinet is placed on the first rail, the moving contact on the trolley switch cabinet is connected to the first test head, when the trolley switch cabinet is placed on the second rail, the moving contact is connected to the second test head, and when the trolley switch cabinet is placed on the third rail, the moving contact is connected to the third test head.

[0007] As a preferred solution for the trolley switch cabinet testing tooling, a ramp is provided on the side of the base away from the test frame, one end of the ramp is connected to the ground, and the other end of the ramp is connected to the first rail, the second rail and the third rail.

[0008] As a preferred solution for the trolley switch cabinet testing tooling, a plurality of guide rails are arranged on the ramp, and the guide rails include a first end and a second end, the first end is connected to the ground, the second end is connected to the first rail, the second rail or the third rail, and the size of the first end is larger than the size of the second end.

[0009] As a preferred solution of the trolley switch cabinet test fixture, a first side baffle is provided on the upper surface of the base, and the first side baffle and the upper surface of the base are surrounded to form the first track. When the trolley switch cabinet is placed on the first track, the first side baffle and the side of the wheel of the trolley switch cabinet are pressed tightly;

[0010] The upper surface of the base is provided with a second side baffle, and the second side baffle and the upper surface of the base are surrounded to form the second track. When the trolley switch cabinet is placed on the second track, the second side baffle and the side of the wheel are pressed against each other;

[0011] A third side baffle is provided on the upper surface of the base, and the third side baffle and the upper surface of the base are arranged to form the third track. When the trolley switch cabinet is placed on the third track, the third side baffle and the side of the wheel are pressed tightly.

[0012] As a preferred solution of the trolley switch cabinet test fixture, a first end plate is provided at the end of the first side baffle, and when the trolley switch cabinet is placed on the first track, the first end plate and the wheel are pressed tightly;

[0013] A second end plate is provided at the end of the second side baffle, and when the trolley switch cabinet is placed on the second track, the second end plate and the wheel are pressed tightly;

[0014] A third end plate is provided at the end of the third side baffle, and when the trolley switch cabinet is placed on the third track, the third end plate and the wheel are pressed tightly.

[0015] As a preferred solution for the trolley switch cabinet testing tooling, a width adjustment device is provided on the base, and the width adjustment device is used to adjust the distance between the two first rails, the distance between the two second rails and the distance between the two third rails.

[0016] As a preferred solution of the trolley switch cabinet test fixture, the width adjustment device includes a first screw rod, a first mounting block, a second screw rod and a second mounting block, the two ends of the first screw rod and the second screw rod are respectively rotatably arranged on the base, the first mounting block is threadedly connected to the first screw rod, the lower surface of the first mounting block is in contact with the base, and the upper surface of the first mounting block is connected to one of the first rails, one of the second rails and one of the third rails;

[0017] The second mounting block is threadedly connected to the second screw rod, the lower surface of the second mounting block is in contact with the base, and the upper surface of the second mounting block is connected to another first rail, another second rail and another third rail.

[0018] As a preferred solution of the trolley switch cabinet testing tool, the width adjustment device includes a connecting rod, and two ends of the connecting rod are respectively connected to the first screw rod and the second screw rod.

[0019] As a preferred solution of the trolley switch cabinet testing tool, the width adjustment device includes a handle, and the handle is connected to the first screw rod and / or the second screw rod.

[0020] As a preferred solution for the trolley switch cabinet testing tooling, a plurality of mounting plates are movably arranged on the test frame, each of the mounting plates is provided with the first test head, the second test head and the third test head, and a ruler is provided on the test frame, the length of the ruler extends in the horizontal direction, and the ruler is used to measure the distance between the mounting plates.

[0021] The beneficial effects of the present invention are as follows: by setting the first track, the second track and the third track, the trolley switch cabinet test tool can adapt to three commonly used specifications of trolley switch cabinets, so that the trolley switch cabinet test tool can detect three commonly used specifications of trolley switch cabinets, thereby expanding the application scope of the trolley switch cabinet test tool; by setting the first track to have the lowest height and the third track to have the highest height, the installation of the first test head, the second test head and the third test head can be facilitated, thereby avoiding position interference between the first test head, the second test head and the third test head, and avoiding the need to repeatedly disassemble test heads of different specifications before testing, thereby improving the test efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention is further described in detail below based on the accompanying drawings and embodiments.

[0023] Figure 1 This is a schematic diagram of the test fixture for the trolley switch cabinet described in the first embodiment of the present invention.

[0024] Figure 2 It is a side view schematic diagram of the trolley switch cabinet testing tooling described in the second embodiment of the present invention.

[0025] Figure 3 Schematic diagram of the ramp described in an embodiment of the present invention.

[0026] Figure 4 It is a schematic diagram of the base and the width adjustment device described in an embodiment of the present invention.

[0027] In the figure:

[0028] 1. Base; 2. Test frame; 3. Reinforcement ribs; 4. First track; 5. Second track; 6. Third track; 7. First side baffle; 8. Second side baffle; 9. Third side baffle; 10. First end plate; 11. Second end plate; 12. Third end plate; 13. Ramp; 14. Guide track; 15. Mounting plate; 16. First screw rod; 17. Second screw rod; 18. First mounting block; 19. Second mounting block; 20. Connecting rod; 21. Handle. DETAILED DESCRIPTION

[0029] In order to make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved clearer, the technical solutions of the embodiments of the present invention will be further described in detail below 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 those skilled in the art without creative work are within the scope of protection of the present invention.

[0030] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, 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 intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] like Figures 1 to 4As shown, a trolley switch cabinet test fixture provided by the present invention includes a base 1 and a test frame 2, the test frame 2 is arranged on one side of the base 1, and a plurality of first test heads (not shown in the figure), a plurality of second test heads (not shown in the figure) and a plurality of third test heads (not shown in the figure) are arranged on a side of the test frame 2 close to the base 1. Two parallel first rails 4, two parallel second rails 5 and two parallel third rails 6 are arranged on the base 1, the two first rails 4 are arranged between the two second rails 5, the first rail 4 and the second rail 5 are arranged between the two third rails 6, the height of the first rail 4 is lower than the height of the second rail 5, the height of the second rail 5 is lower than the height of the third rail 6, the first rail 4, the second rail 5 and the third rail 6 are all perpendicular to the test frame 2, when the trolley switch cabinet is placed on the first rail 4, the moving contact on the trolley switch cabinet is connected to the first test head, when the trolley switch cabinet is placed on the second rail 5, the moving contact of the trolley switch cabinet is connected to the second test head, and when the trolley switch cabinet is placed on the third rail 6, the moving contact of the trolley switch cabinet is connected to the third test head. Commonly used trolley switch cabinets have three different sizes according to different rated currents, namely 1250A trolley switch cabinets, 3150A trolley switch cabinets and 4000A trolley switch cabinets. By setting the first track 4, the second track 5 and the third track 6, the trolley switch cabinet test tooling can adapt to 1250A trolley switch cabinets, 3150A trolley switch cabinets and 4000A trolley switch cabinets, so that the trolley switch cabinet test tooling can detect 1250A trolley switch cabinets, 3150A trolley switch cabinets and 4000A trolley switch cabinets, thereby expanding the scope of application of the trolley switch cabinet test tooling; by setting the first track 4 to the lowest height and the third track 6 to the highest height, the installation of the first test head, the second test head and the third test head can be facilitated, thereby avoiding the first test head, the second test head and The third test head has position interference, which avoids the need to repeatedly disassemble test heads of different specifications before testing, thereby improving test efficiency; when it is necessary to test the 1250A trolley switch cabinet, the 1250A trolley switch cabinet can be placed on the first track 4, at this time, the moving contact on the 1250A trolley switch cabinet can be connected to the first test head for testing; when it is necessary to test the 3150A trolley switch cabinet, the 3150A trolley switch cabinet can be placed on the second track 5, at this time, the moving contact on the 3150A trolley switch cabinet can be connected to the second test head for testing; when it is necessary to test the 4000A trolley switch cabinet, the 4000A trolley switch cabinet can be placed on the third track 6, at this time, the moving contact on the 4000A trolley switch cabinet can be connected to the third test head for testing.

[0032] In this embodiment, according to the sizes of the 1250A trolley switch cabinet, the 3150A trolley switch cabinet and the 4000A trolley switch cabinet, the distance between the two first rails 4 is 650 mm, the distance between the two second rails 5 is 800 mm, and the distance between the two third rails 6 is 1000 mm.

[0033] In this embodiment, there are six first test heads, six second test heads and six third test heads respectively, that is, there are eighteen test heads in total, and three mounting plates 15 are provided on the test frame 2. Two first test heads, two second test heads and two third test heads are installed on each mounting plate 15, so that the first test head, the second test head and the third test head can be connected to the corresponding moving contacts for testing.

[0034] Specifically, a ramp 13 is provided on one side of the base 1 away from the test frame 2, one end of the ramp 13 is connected to the ground, and the other end of the ramp 13 is connected to the first track 4, the second track 5 and the third track 6. By providing the ramp 13, the trolley switch cabinet can be conveniently moved to the base 1, thereby facilitating the testing operation and improving the testing efficiency.

[0035] Specifically, a plurality of guide rails 14 are provided on the ramp 13, and the guide rails 14 include a first end and a second end, the first end is connected to the ground, and the second end is connected to the first rail 4, the second rail 5 or the third rail 6, and the size of the first end is larger than the size of the second end. At this time, the guide rails 14 are horn-shaped. By providing the horn-shaped guide rails 14, the position alignment between the trolley switch cabinet and the guide rails 14 can be facilitated, so that the trolley switch cabinet can better enter the first rail 4, the second rail 5 or the third rail 6, thereby facilitating the testing operation.

[0036] In this embodiment, the upper surface of the base 1 is provided with a first side baffle 7, and the first side baffle 7 and the upper surface of the base 1 are arranged to form a first track 4. When the trolley switch cabinet is placed on the first track 4, the first side baffle 7 and the side of the wheel of the trolley switch cabinet are pressed against each other; the upper surface of the base 1 is provided with a second side baffle 8, and the second side baffle 8 and the upper surface of the base 1 are arranged to form a second track 5. When the trolley switch cabinet is placed on the second track 5, the second side baffle 8 and the side of the wheel are pressed against each other; the upper surface of the base 1 is provided with a third side baffle 9, and the third side baffle 9 and the upper surface of the base 1 are arranged to form a third track 6. When the trolley switch cabinet is placed on the third track 6, the third side baffle 9 and the side of the wheel are pressed against each other. In this embodiment, the first side baffle 7, the second side baffle 8 and the third side baffle 9 are pressed against the inner side of the wheel respectively. By setting the first side baffle 7, the second side baffle 8 and the third side baffle 9, the cooperation between the two side baffles can be used to limit the trolley switch cabinet on the base 1, thereby avoiding the trolley switch cabinet from shifting in the left and right directions during testing; the first side baffle 7, the second side baffle 8 and the third side baffle 9 have a simple structure, which can reduce the difficulty of forming the first rail 4, the second rail 5 and the third rail 6, and reduce the manufacturing cost of the trolley switch cabinet test tooling.

[0037] Specifically, a first end plate 10 is provided at the end of the first side baffle 7, and when the trolley switch cabinet is placed on the first track 4, the first end plate 10 and the wheel are pressed against each other; a second end plate 11 is provided at the end of the second side baffle 8, and when the trolley switch cabinet is placed on the second track 5, the second end plate 11 and the wheel are pressed against each other; a third end plate 12 is provided at the end of the third side baffle 9, and when the trolley switch cabinet is placed on the third track 6, the third end plate 12 and the wheel are pressed against each other. By providing the first end plate 10, the second end plate 11 and the third end plate 12, the position of the trolley switch cabinet can be limited in the front and rear directions of the wheels, thereby preventing the trolley switch cabinet from shifting in the front and rear directions during testing.

[0038] Preferably, the first end plate 10, the second end plate 11 and the third end plate 12 on the side close to the ramp 13 are detachably connected to the base 1, so as to avoid the first end plate 10, the second end plate 11 or the third end plate 12 blocking the movement of the trolley switch cabinet when the trolley switch cabinet is pushed.

[0039] In one embodiment, a width adjustment device is provided on the base 1, and the width adjustment device is used to adjust the distance between the two first rails 4, the distance between the two second rails 5, and the distance between the two third rails 6. By providing the width adjustment device, the distance between the two first rails 4, the two second rails 5, and the two third rails 6 can be adjusted, so that the applicable scope of the trolley switch cabinet test tooling can be further expanded.

[0040] Specifically, the width adjustment device includes a first screw rod 16, a first mounting block 18, a second screw rod 17 and a second mounting block. The two ends of the first screw rod 16 and the second screw rod 17 are respectively rotatably arranged on the base 1. The first mounting block 18 is threadedly connected to the first screw rod 16. The lower surface of the first mounting block 18 abuts against the base 1. The upper surface of the first mounting block 18 is connected to one of the first rails 4, one of the second rails 5 and one of the third rails 6. The second mounting block 19 is threadedly connected to the second screw rod 17. The lower surface of the second mounting block 19 abuts against the base 1. The upper surface of the second mounting block 19 is connected to another first rail 4, another second rail 5 and another third rail 6. By setting the first screw rod 16, the first mounting block 18, the second screw rod 17 and the second mounting block 19, the distance between the first rail 4, the second rail 5 and the third rail 6 is adjusted by screw transmission. The adjustment accuracy of the screw transmission is high, which can improve the detection accuracy of the trolley switch cabinet test fixture.

[0041] Specifically, the width adjustment device includes a connecting rod 20, and the two ends of the connecting rod 20 are respectively connected to the first screw rod 16 and the second screw rod 17. In this embodiment, the threads on the first screw rod 16 and the second screw rod 17 are in opposite directions. By setting the connecting rod 20, when the first screw rod 16 is rotated, the second screw rod 17 can be rotated at the same time, so that the two first rails 4 can be symmetrically arranged on the base 1, and the two second rails 5 and the two third rails 6 can also be symmetrically arranged on the base 1.

[0042] Specifically, the width adjustment device includes a handle 21, and the handle 21 is connected to the first screw rod 16 and / or the second screw rod 17. By providing the handle 21, the first screw rod 16 and the second screw rod 17 can be easily rotated, thereby reducing the difficulty of adjusting the track spacing.

[0043] Specifically, three mounting plates 15 are movably arranged on the test frame 2, and a ruler is arranged on the test frame 2, the length of the ruler extends in the horizontal direction, and the ruler is used to measure the distance between the mounting plates 15. Since the distance between the first rail 4, the second rail 5 and the third rail 6 can be adjusted, the ruler is arranged to facilitate the measurement of the position between the mounting plates 15, so that the first test head, the second test head and the third test head can be in a standard position, so as to perform a centering test on the trolley switch cabinet of the corresponding specification.

[0044] Specifically, a reinforcing rib 3 is further provided between the test frame 2 and the base 1, and the two ends of the reinforcing rib 3 are respectively connected to the test frame and the base 1. By providing the reinforcing rib 3, the connection strength between the test frame 2 and the base 1 can be increased, thereby preventing the test frame 2 from tipping over.

[0045] In the description herein, it should be understood that the terms "upper", "lower", "left", "right", etc., and the like, are based on the directions or positions shown in the drawings, and are only for the convenience of description and simplified operation, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0046] In the description of this specification, the description with reference to the terms "an embodiment", "example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example.

[0047] In addition, it should be understood that although this specification is described according to implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0048] The technical principle of the present invention is described above in conjunction with specific embodiments. These descriptions are only for explaining the principle of the present invention and cannot be interpreted as limiting the scope of protection of the present invention in any way. Based on the explanations herein, those skilled in the art can associate other specific implementations of the present invention without paying creative labor, and these methods will fall within the scope of protection of the present invention.

Claims

1. A trolley switch cabinet test tool, characterized in that: The invention comprises a base and a test frame, wherein the test frame is arranged at one side of the base, and a plurality of first test heads, a plurality of second test heads and a plurality of third test heads are arranged at a side of the test frame close to the base, and two parallel first rails, two parallel second rails and two parallel third rails are arranged on the base, and the two first rails are arranged between the two second rails, and the first rail and the second rail are arranged between the two third rails, and the height of the first rail is lower than the height of the second rail, and the height of the second rail is lower than the height of the third rail, and the first rail, the second rail and the third rail are all perpendicular to the test frame, and when the trolley switch cabinet is placed on the first rail, the moving contact on the trolley switch cabinet is connected to the first test head, when the trolley switch cabinet is placed on the second rail, the moving contact is connected to the second test head, and when the trolley switch cabinet is placed on the third rail, the moving contact is connected to the third test head; The upper surface of the base is provided with a first side baffle, and the first side baffle and the upper surface of the base are surrounded to form the first track. When the trolley switch cabinet is placed on the first track, the first side baffle and the side of the wheel of the trolley switch cabinet are pressed tightly; The upper surface of the base is provided with a second side baffle, and the second side baffle and the upper surface of the base are surrounded to form the second track. When the trolley switch cabinet is placed on the second track, the second side baffle and the side of the wheel are pressed against each other; A third side baffle is provided on the upper surface of the base, and the third side baffle and the upper surface of the base are surrounded to form the third track. When the trolley switch cabinet is placed on the third track, the third side baffle and the side of the wheel are pressed against each other; A first end plate is disposed at the end of the first side baffle, and when the trolley switch cabinet is placed on the first track, the first end plate and the wheel are pressed against each other; A second end plate is provided at the end of the second side baffle, and when the trolley switch cabinet is placed on the second track, the second end plate and the wheel are pressed tightly; A third end plate is provided at the end of the third side baffle, and when the trolley switch cabinet is placed on the third track, the third end plate and the wheel are pressed against each other; The base is provided with a width adjustment device, and the width adjustment device is used to adjust the distance between the two first rails, the distance between the two second rails, and the distance between the two third rails; The width adjustment device comprises a first screw rod, a first mounting block, a second screw rod and a second mounting block, the two ends of the first screw rod and the second screw rod are respectively rotatably arranged on the base, the first mounting block is threadedly connected to the first screw rod, the lower surface of the first mounting block is in contact with the base, and the upper surface of the first mounting block is connected to one of the first rails, one of the second rails and one of the third rails; The second mounting block is threadedly connected to the second screw rod, the lower surface of the second mounting block is in contact with the base, and the upper surface of the second mounting block is connected to another first rail, another second rail and another third rail.

2. The trolley switch cabinet testing tool according to claim 1 is characterized in that: A ramp is arranged on one side of the base away from the test frame, one end of the ramp is connected to the ground, and the other end of the ramp is connected to the first track, the second track and the third track.

3. The trolley switch cabinet testing tool according to claim 2 is characterized in that: The ramp is provided with a plurality of guide tracks, the guide tracks comprising a first end and a second end, the first end being connected to the ground, the second end being connected to the first track, the second track or the third track, and the size of the first end being larger than the size of the second end.

4. The trolley switch cabinet testing tool according to claim 1 is characterized in that: The width adjustment device comprises a connecting rod, and two ends of the connecting rod are respectively connected to the first screw rod and the second screw rod.

5. The trolley switch cabinet testing tool according to claim 4 is characterized in that: The width adjustment device comprises a handle, and the handle is connected to the first screw rod and / or the second screw rod.

6. The trolley switch cabinet testing tool according to claim 1 is characterized in that: A plurality of mounting plates are movably arranged on the test frame, and the first test head, the second test head and the third test head are arranged on each of the mounting plates. A ruler is arranged on the test frame, and the length of the ruler extends in a horizontal direction. The ruler is used to measure the distance between the mounting plates.

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