Loop resistance tester of switch control equipment

Abstract

The utility model relates to the technical field of loop resistance testers, in particular to a loop resistance tester of switch control equipment, which is convenient to adjust the use angle according to the actual situation, is convenient to better observe data on a function box, and improves the heat dissipation effect. Comprising a bottom box, an instrument host, a supporting sliding assembly, a bouncing assembly, an angle adjusting assembly, a heat dissipation assembly and a protection assembly, the bottom of the front end of the instrument host is installed in the bottom box through the supporting sliding assembly, the bouncing assembly is installed at the rear end in the bottom box, and the angle adjusting assembly is installed in the bottom box to adjust the use angle of the instrument host. The heat dissipation assembly is installed on the bottom box, and the upper part of the bottom box is provided with the protection assembly.

Description

Technical Field

[0001] The utility model relates to the technical field of loop resistance testers, in particular to a loop resistance tester for switch control equipment. Background Art

[0002] The loop resistance tester is a special instrument for measuring the contact resistance and loop resistance of switch control equipment. In switch equipment such as high-voltage switches and load switches, the size of the loop resistance directly affects the performance of the product. The size of the loop resistance can reflect the contact condition of the switch contacts, which is directly reflected in the temperature of the product during operation. When switch manufacturers, power supply units, and power construction and installation companies conduct factory inspection, installation, maintenance, and overhaul of various types of switch equipment, the loop resistance must be tested, which is an important performance indicator. A new type of loop resistance tester proposed in prior art announcement number CN209640412U includes an instrument host and a terminal control box; the instrument host includes current terminals, voltage terminals, an operation display, a working power interface, a power switch, and a processor; the terminal control box includes an AC power switch, a DC power switch, a test light button A, a test light button B, a test light button C, contactors A, contactors B, contactors C, and a working power module. However, the control box often generates a lot of heat during operation, which makes it impossible to discharge the heat inside the control box, which will cause overheating damage inside the control box. In addition, the control box placed flat inside the bottom box will require the staff to lower their heads to observe the data displayed on the control box, which will cause damage to the staff's neck. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides a loop resistance tester for switch control equipment which is convenient for adjusting the use angle according to actual conditions, facilitates better observation of data on the function box, and improves the heat dissipation effect.

[0004] The utility model discloses a loop resistance tester for switch control equipment, comprising a bottom box, an instrument mainframe, a supporting sliding component, a pop-up component, an angle adjustment component, a heat dissipation component and a protective component. The front bottom of the instrument mainframe is installed inside the bottom box through the supporting sliding component, the pop-up component is installed at the rear end inside the bottom box, the angle adjustment component is installed inside the bottom box to adjust the use angle of the instrument mainframe, the heat dissipation component is installed on the bottom box, and the protective component is installed on the upper part of the bottom box; when in use, the protective component is opened, and at this time the pop-up component pushes up the rear end of the instrument mainframe, and the instrument mainframe can be pushed to move on the supporting sliding component through the angle adjustment component to adjust the use angle of the instrument mainframe, so that the user can adjust the use angle according to the actual situation, and the user can better observe the data on the function box, and the heat dissipation speed of the instrument mainframe can be improved through the heat dissipation component to avoid overheating damage inside the instrument mainframe, thereby improving the practicality of the equipment.

[0005] Preferably, the supporting sliding assembly includes two slide rails, two limit sliders and two support rods. The two slide rails are fixedly mounted on the front end of the inner walls at the left and right ends of the bottom box. A limit slide groove is provided in the slide rail. The limit slider is slidably mounted in the limit slide groove. A support rod is rotatably mounted on the limit slider, and the bottom of the support rod is connected to the bottom of the front end of the instrument mainframe. The instrument mainframe is supported by the limit slider and the support rod. When adjusting the instrument mainframe, the support rod rotates on the limit slider and slides in the limit slide groove at the same time, which is convenient for adjusting the angle of the instrument mainframe.

[0006] Preferably, the angle adjustment assembly includes a threaded rod, a movable seat, a knob, a push arm and a connecting seat, the threaded rod is rotatably installed at the bottom end of the bottom box, the front end of the threaded rod rotates and passes through the front end of the bottom box and is fixedly installed with a knob, the movable seat is slidably installed on the inner wall of the bottom of the bottom box, the movable seat is screwed on the outer wall of the threaded rod, the upper part of the movable seat is rotatably installed with a push arm, the connecting seat is installed at the lower rear end of the instrument mainframe, the lower part of the connecting seat is provided with a push shaft, the upper end of the push arm is provided with a movable groove, and the push shaft is located in the movable groove; turning the knob drives the threaded rod to rotate, pushes the movable seat to slide in the bottom box, thereby pushing the connecting seat through the push arm, so that the instrument mainframe rotates on the limit slider, and adjusts the use angle of the instrument mainframe, which is convenient for users to adjust the use angle according to actual conditions, and allows users to better observe the data on the function box.

[0007] Preferably, the pop-up assembly includes two telescopic rods, two rubber heads and two springs. The two telescopic rods are symmetrically installed on the left and right sides of the rear end of the bottom box. Rubber heads are installed on the tops of the telescopic rods, and the springs are sleeved on the outer walls of the telescopic rods. When in use, the springs and rubber heads are used to push the rear end of the instrument host to pop up to a certain height, so that the push shaft at the bottom of the connecting seat can move in the movable groove, which is convenient for adjusting the angle of the instrument host.

[0008] Preferably, the heat dissipation assembly includes two filters, multiple heat dissipation fins and two heat dissipation fans. Hollow grooves are opened on the rear sides of the left and right ends of the bottom box, and filters are installed in the hollow grooves. Multiple heat dissipation fins are connected to the bottom of the instrument mainframe, and heat dissipation fans are installed on the left and right sides of the lower front end of the bottom box. The heat dissipation fan is started to exhaust air inside the bottom box, and the gas enters the bottom box through the hollow grooves. The air flow takes away the heat from the bottom of the instrument mainframe. The heat dissipation area can be increased through the heat dissipation fins, thereby improving the heat dissipation speed of the instrument mainframe and avoiding overheating damage inside the instrument mainframe.

[0009] Preferably, the protection component includes a box cover, two hinged chains, two pull ropes, two storage boxes and a handle. The box cover is movably mounted on the top rear portion of the bottom box by means of two hinged chains, and the box cover can completely cover the upper portion of the bottom box. Storage boxes are mounted on the left and right sides of the upper portion of the bottom box, and the left and right sides of the inner wall of the box cover are connected to the left and right inner walls of the bottom box by pull ropes. A handle is mounted on the box cover, and a clearance opening is provided on the box cover at a position corresponding to the knob. When not in use, the box cover is mounted on the upper portion of the bottom box, and the leakage hole slot and the cooling fan can be sealed and protected. After the box cover is opened, it can be limited by a pull rope, and the box cover can be easily operated by the handle, thereby improving the convenience during operation, and the storage box can store the connecting wires.

[0010] Preferably, it also includes two rotating rods, two limit pins, two rubber strips and multiple rubber pads, the two rotating rods are rotatably installed on the left and right sides of the front end of the bottom box, a locking pin is provided at the front end of the rotating rod, and a limit pin is fixedly installed at the rear end of the rotating rod, a limit cavity is opened at the position corresponding to the limit pin at the front end of the instrument mainframe, an insertion opening matching the limit pin is opened at the front end of the limit cavity, a limit opening is opened at the front end of the box cover at the position corresponding to the rotating rod, rubber strips are installed on the left and right sides of the rear end of the bottom box, and rubber pads are fixedly installed at the four corners of the bottom of the bottom box; when the box cover is installed on the upper part of the bottom box, the limit opening at the front end of the box cover passes through the rotating rod, and the box cover presses the instrument mainframe downward, so that the limit pin passes through the insertion opening and enters the limit cavity, the rotating rod is rotated to lock the box cover, and the limit pin limits and fixes the instrument mainframe, the rubber strip can be used to support the bottom box when it is placed vertically, and the rubber pad is used to support the bottom of the bottom box when the equipment is in use, so as to improve friction and ensure stability.

[0011] Compared with the prior art, the beneficial effects of the utility model are as follows: when in use, the protective component is opened, and at this time the pop-up component pushes up the rear end of the instrument main unit, and the angle adjustment component can push the instrument main unit to move on the supporting sliding component, and adjust the use angle of the instrument main unit, so that the user can adjust the use angle according to actual conditions, and the user can better observe the data on the function box, and the heat dissipation speed of the instrument main unit can be improved through the heat dissipation component to avoid overheating damage inside the instrument main unit, thereby improving the practicality of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1It is a structural schematic diagram of the utility model;

[0013] Figure 2 It is a schematic diagram of the axonometric structure of the utility model;

[0014] Figure 3 It is a schematic diagram of the lower three-dimensional structure of the utility model;

[0015] Figure 4 It is a schematic diagram of the front end cross-sectional structure of the utility model;

[0016] Figure 5 It is a schematic diagram of the right section structure of the utility model;

[0017] Markings in the attached figure: 1. Base box; 2. Instrument main unit; 3. Slide rail; 4. Limit slider; 5. Support rod; 6. Threaded rod; 7. Moving seat; 8. Knob; 9. Push arm; 10. Connecting seat; 11. Telescopic rod; 12. Rubber head; 13. Spring; 14. Filter; 15. Heat sink; 16. Cooling fan; 17. Box cover; 18. Hinge chain; 19. Draw rope; 20. Storage box; 21. Handle; 22. Turn rod; 23. Limit pin; 24. Limit cavity; 25. Rubber strip; 26. Rubber pad. DETAILED DESCRIPTION

[0018] In order to facilitate the understanding of the utility model, the utility model will be described more comprehensively below with reference to the relevant drawings. The utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the utility model more thorough and comprehensive.

[0019] Example

[0020] like Figures 1 to 5As shown, two slide rails 3 are fixedly installed on the front ends of the inner walls of the left and right ends of the bottom box 1, and a limited sliding groove is provided in the slide rail 3. The limiting slider 4 is slidably installed in the limiting sliding groove. A support rod 5 is rotatably installed on the limiting slider 4, and the bottom of the support rod 5 is connected to the bottom of the front end of the instrument host 2. The threaded rod 6 is rotatably installed at the bottom end of the bottom box 1. The front end of the threaded rod 6 rotates and penetrates the front end of the bottom box 1 and is fixedly installed with a knob 8. The movable seat 7 is slidably installed on the inner wall of the bottom of the bottom box 1, and the movable seat 7 is screwed on the outer wall of the threaded rod 6. A push arm 9 is rotatably installed on the upper part of the movable seat 7. The connecting seat 10 is installed at the lower rear end of the instrument host 2. A pushing shaft is provided at the lower part of the connecting seat 10, and a movable groove is provided at the upper end of the push arm 9, and the pushing shaft is located in the movable groove. Two telescopic rods 11 are symmetrically installed on the left and right sides of the inner rear end of the bottom box 1, and a rubber head 12 is installed on the top of the telescopic rod 11. A spring 13 is sleeved on the outer wall of the telescopic rod 11. A hollow groove is provided on the rear side of the left and right ends of the bottom box 1, and a filter screen 14 is installed in the hollow groove. The bottom of the bottom box 1 is connected with a plurality of heat dissipation fins 15, and heat dissipation fans 16 are installed on the left and right sides of the lower front end of the bottom box 1. The box cover 17 is movably installed on the top of the rear of the bottom box 1 through two hinge chains 18. The box cover 17 can completely cover the upper part of the bottom box 1. Storage boxes 20 are installed on the left and right sides of the upper part of the bottom box 1. The left and right sides of the inner wall of the box cover 17 are connected to the left and right inner walls of the bottom box 1 through pull ropes 19. A handle 21 is installed on the box cover 17. The position of the box cover 17 corresponding to the knob 8 is provided with an avoidance opening. The rotating rod 22 is rotatably mounted on the left and right sides of the front end of the bottom box 1, a locking pin is arranged at the front end of the rotating rod 22, a limit pin 23 is fixedly installed at the rear end of the rotating rod 22, a limit cavity 24 is arranged at the front end of the instrument mainframe 2 corresponding to the limit pin 23, an insertion port matching the limit pin 23 is arranged at the front end of the limit cavity 24, a limit port is arranged at the front end of the box cover 17 corresponding to the rotating rod 22, rubber strips 25 are arranged on the left and right sides of the rear end of the bottom box 1, and rubber pads 26 are fixedly installed at the four corners of the bottom of the bottom box 1;

[0021] When the box cover 17 is installed on the upper part of the bottom box 1, the limiting opening at the front end of the box cover 17 passes through the rotating rod 22, and the box cover 17 presses the instrument host 2 downward, so that the limiting pin 23 passes through the insertion opening and enters the limiting cavity 24, and the rotating rod 22 is rotated to lock the box cover 17 with the locking pin, and at the same time, the limiting pin 23 limits and fixes the instrument host 2. The rubber strip 25 can be used to support the bottom box 1 when it is placed vertically. When the equipment is in use, the rubber pad 26 supports the bottom of the bottom box 1 to increase friction and ensure stability. When not in use, the box cover 17 is installed on the upper part of the bottom box 1, which can seal and protect the leakage hole slot and the cooling fan 16. After the box cover 17 is opened, it is limited by the pull rope 19, and the box cover 17 is easy to operate through the handle 21, which improves the convenience during operation. The storage box 20 can store the connecting wires. When in use, the spring 13 and the rubber head 12 push the rear end of the instrument host 2 to bounce up to a certain height, so that the bottom of the connecting seat 10 The pushing shaft moves in the movable groove, which is convenient for adjusting the angle of the instrument host 2. Turning the knob 8 drives the threaded rod 6 to rotate, and pushes the movable seat 7 to slide on the bottom box 1, so that the connecting seat 10 is pushed by the push arm 9 to make the instrument host 2 rotate on the limit slider 4, and the use angle of the instrument host 2 is adjusted, which is convenient for users to adjust the use angle according to actual conditions, and allows users to better observe the data on the function box. The instrument host 2 is supported by the limit slider 4 and the support rod 5. When adjusting the instrument host 2, the support rod 5 rotates on the limit slider 4 and slides in the limit slide groove at the same time, which is convenient for adjusting the angle of the instrument host 2. The cooling fan 16 is started to exhaust air from the inside of the bottom box 1, and the gas enters the bottom box 1 through the hollow groove. The air flow takes away the heat from the bottom of the instrument host 2. The heat dissipation area can be increased through the heat dissipation fins 15, and the heat dissipation speed of the instrument host 2 is improved to avoid overheating damage inside the instrument host 2.

[0022] like Figures 1 to 5As shown, the utility model is a loop resistance tester for switch control equipment. When the equipment is in operation, the bottom box 1 is placed in the use position, the bottom of the bottom box 1 is supported by the rubber pad 26, the rotating rod 22 is rotated to release the lock of the box cover 17, and the limit pin 23 releases the limit of the instrument host 2. The rear end of the instrument host 2 is pushed upward to a certain height by the spring 13 and the rubber head 12, and the knob 8 is rotated to drive the threaded rod 6 to rotate, and the moving seat 7 is pushed to slide on the bottom box 1, so that the connecting seat 10 is pushed by the push arm 9, so that the instrument host 2 is in the limit position. The slider 4 is rotated to adjust the use angle of the instrument host 2, which is convenient for users to adjust the use angle according to actual conditions. The instrument host 2 is supported by the limit slider 4 and the support rod 5. When adjusting the instrument host 2, the support rod 5 is rotated on the limit slider 4 and slides in the limit slide groove at the same time, which is convenient for adjusting the angle of the instrument host 2. The cooling fan 16 is started to exhaust the inside of the bottom box 1, and the gas enters the bottom box 1 through the hollow groove. The air flow takes away the heat from the bottom of the instrument host 2. The heat dissipation area can be increased through the heat dissipation fins 15, thereby improving the heat dissipation speed of the instrument host 2.

[0023] The instrument host 2 and the cooling fan 16 of the loop resistance tester of a switch control device of the utility model are purchased on the market, and technicians in the industry only need to install and operate them according to the accompanying instruction manual, without the need for creative labor by technicians in this field.

[0024] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A loop resistance tester for a switch control device, characterized in that: The apparatus comprises a bottom box (1), an instrument mainframe (2), a support sliding assembly, a pop-up assembly, an angle adjustment assembly, a heat dissipation assembly and a protective assembly. The front bottom of the instrument mainframe (2) is mounted inside the bottom box (1) via the support sliding assembly. The pop-up assembly is mounted inside the rear end of the bottom box (1). The angle adjustment assembly is mounted inside the bottom box (1) to adjust the use angle of the instrument mainframe (2). The heat dissipation assembly is mounted on the bottom box (1). The protective assembly is mounted on the upper part of the bottom box (1).

2. A loop resistance tester for a switch control device as claimed in claim 1, characterized in that: The supporting sliding assembly comprises two slide rails (3), two limit sliders (4) and two support rods (5). The two slide rails (3) are fixedly mounted at the front ends of the inner walls at the left and right ends of the bottom box (1). A limit slider groove is provided in the slide rails (3). The limit slider (4) is slidably mounted in the limit slider groove. The support rod (5) is rotatably mounted on the limit slider (4). The bottom of the support rod (5) is connected to the bottom of the front end of the instrument mainframe (2).

3. A loop resistance tester for a switch control device as claimed in claim 1, characterized in that: The angle adjustment assembly comprises a threaded rod (6), a movable seat (7), a knob (8), a push arm (9) and a connecting seat (10), wherein the threaded rod (6) is rotatably mounted at the bottom end of the bottom box (1), the front end of the threaded rod (6) is rotatably penetrated through the front end of the bottom box (1) and is fixedly mounted with the knob (8), the movable seat (7) is slidably mounted on the inner wall of the bottom of the bottom box (1), the movable seat (7) is screwed on the outer wall of the threaded rod (6), the upper part of the movable seat (7) is rotatably mounted with the push arm (9), the connecting seat (10) is mounted at the lower rear end of the instrument main body (2), the lower part of the connecting seat (10) is provided with a push shaft, the upper end of the push arm (9) is provided with a movable groove, and the push shaft is located in the movable groove.

4. A loop resistance tester for a switch control device as claimed in claim 1, characterized in that: The pop-up assembly comprises two telescopic rods (11), two rubber heads (12) and two springs (13). The two telescopic rods (11) are symmetrically mounted on the left and right sides of the rear end of the bottom box (1). The rubber heads (12) are mounted on the tops of the telescopic rods (11). The springs (13) are sleeved on the outer walls of the telescopic rods (11).

5. A loop resistance tester for a switch control device as claimed in claim 1, characterized in that: The heat dissipation component comprises two filters (14), a plurality of heat dissipation fins (15) and two heat dissipation fans (16); hollow grooves are provided at the rear sides of the left and right ends of the bottom box (1); the filters (14) are installed in the hollow grooves; the bottom of the instrument mainframe (2) is connected to the plurality of heat dissipation fins (15); and heat dissipation fans (16) are installed at the left and right sides of the lower front end of the bottom box (1).

6. A loop resistance tester for a switch control device as claimed in claim 1, characterized in that: The protective assembly comprises a box cover (17), two hinged chains (18), two pull ropes (19), two storage boxes (20) and a handle (21). The box cover (17) is movably mounted on the top of the rear portion of the bottom box (1) via the two hinged chains (18). The box cover (17) can completely cover the upper portion of the bottom box (1). The storage boxes (20) are mounted on the left and right sides of the upper portion of the bottom box (1). The left and right sides of the inner wall of the box cover (17) are connected to the left and right sides of the inner wall of the bottom box (1) via the pull ropes (19). The box cover (17) is mounted with a handle (21). A clearance opening is provided at a position on the box cover (17) corresponding to the knob (8).

7. A loop resistance tester for a switch control device as claimed in claim 6, characterized in that: The apparatus further comprises two rotating rods (22), two limiting pins (23), two rubber strips (25) and a plurality of rubber pads (26). The two rotating rods (22) are rotatably mounted on the left and right sides of the front end of the bottom box (1). The front end of the rotating rods (22) is provided with a locking pin. The rear end of the rotating rods (22) is fixedly mounted with the limiting pins (23). A limiting cavity (24) is provided at a position corresponding to the limiting pins (23) at the front end of the instrument main body (2). An insertion opening matching the limiting pins (23) is provided at the front end of the limiting cavity (24). A limiting opening is provided at a position corresponding to the rotating rods (22) at the front end of the box cover (17). Rubber strips (25) are installed on the left and right sides of the rear end of the bottom box (1). Rubber pads (26) are fixedly mounted at the four corners of the bottom of the bottom box (1).

Images