Contact resistance comprehensive tester

Abstract

The utility model discloses a contact resistance comprehensive tester, and specifically relates to the resistance tester technology field, the contact resistance comprehensive tester comprises a protection box and a tester installed in the protection box, the top of one side of the protection box is provided with a storage frame, one side of the storage frame is provided with a protection assembly, one side of the protection box is provided with two fixed blocks, a fixed plate is arranged between the two fixed blocks, and the fixed plate is provided with a clamping groove. And a fixing assembly is arranged on the fixing plate. According to the utility model, not only can the test wire be fixed, but also the stability of connection between the test wire and the tester can be improved, and the detection efficiency of the tester can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of resistance testers, and more specifically, to a contact resistance comprehensive tester. Background Art

[0002] The contact resistance tester is designed according to the new power implementation standard DL / T845.4-2004, combining high-frequency switching power supply technology with digital circuit technology. It is suitable for measuring the loop resistance of switch control equipment.

[0003] After searching, a Chinese patent with publication number CN218455749U discloses a portable resistance tester. The advantage of this structure is that when the resistance tester body needs to be moved, the pull rod is pulled outward to make the limit column disengage from the limit hole to release the limit on the legs. The resistance tester body can be moved by pulling the legs outward through the handles provided between the legs. When the resistance tester body is in use, the pull rod is first pulled upward, and then the legs are pushed inward to make the limit holes opened at the outer ends of the legs be in the limit blocks. The pull rod is released, and the limit column enters the limit hole through the elasticity of the spring to position the legs. The legs support the resistance tester body to effectively avoid friction with the ground, and effectively avoid contact with water when there is water on the ground, thereby effectively improving the use effect of the resistance tester body.

[0004] However, when this structure is actually used, since the resistance tester is placed on the ground by means of legs, when the resistance tester is moved due to external influences, the test line on one side of the resistance tester may be directly disconnected from the interface, which may not only cause damage to the test line connector but also affect the test progress of the resistance tester. Utility Model Content

[0005] In order to overcome the problems and defects in the prior art, the utility model provides a contact resistance comprehensive tester to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a comprehensive contact resistance tester, comprising a protective box, and a tester installed inside the protective box, a storage frame is provided on the top of one side of the protective box, a protective assembly is provided on one side of the storage frame, two fixed blocks are provided on one side of the protective box, a fixed plate is provided between the two fixed blocks, and a fixed assembly is provided on the fixed plate; the fixed assembly comprises a plurality of frames arranged on the fixed plate, a plurality of the frames are provided with moving blocks on the top, a moving rod is provided at the bottom of the moving blocks, a plurality of the frames are provided with moving holes on the surfaces, the bottom of the moving rod passes through the moving hole and extends to the inside of the frame, a pressure plate is provided at the bottom of the moving rod, a spring is provided on the moving rod and located inside the frame, and both ends of the spring are respectively connected to the inner wall of the frame and the surface of the pressure plate, which is conducive to fixing the test line.

[0007] Preferably, the protective component includes a protective cover arranged inside the storage frame, a pull ring is provided on the top of the protective cover, two slide grooves are opened on the top surface of the protective box, the bottoms on both sides of the protective cover are located inside the slide grooves, and limit plates are provided on the bottoms on both sides of the protective cover, which is conducive to protecting the top of the protective box.

[0008] Preferably, two support frames are provided at the bottom of the protection box, and one side of the two support frames is connected to the surface of the protection box by bolts, which is conducive to lifting the protection box.

[0009] Preferably, a cover plate is provided on the surface of the protection box, a pull rod is provided on the top of the cover plate, two ventilation holes are provided on the surface of the cover plate, and ventilation plates are provided inside the two ventilation holes, which is convenient for taking and placing the tester.

[0010] Preferably, connecting rods are provided on both sides of the protection box, and rotating cylinders are sleeved on the two connecting rods. Handles are commonly provided on the tops of the two rotating cylinders, which is conducive to moving the position of the handles.

[0011] Preferably, limit rods are provided on both sides of the moving block, and limit holes are opened on the surface of the frame and on both sides of the moving hole. The bottoms of the two limit rods pass through the limit holes and are connected to the surface of the pressure plate, which is conducive to limiting the pressure plate.

[0012] Technical effects and advantages of the utility model:

[0013] 1. By setting a fixed component, pull the moving block to drive the moving rod to move along the moving hole, lift the pressure plate upward inside the frame, make the spring expand and contract, increase the gap between the pressure plate and the fixed plate, and drive the limit rod to move along the limit hole when the moving block moves, so as to limit the pressure plate. When the test line is placed at the bottom of the pressure plate, release the moving block, and generate thrust on the pressure plate through the elasticity of the spring, so that the pressure plate drives the limit rod and the moving block to move, so that the surface of the pressure plate contacts the surface of the test line. Since the cross section of the pressure plate is an arc, it can better fit the surface of the test line, and then fix the test line, which can improve the stability of the connection between the test line and the tester and avoid the test line from falling off.

[0014] 2. By setting up the protection component, pulling the pull ring on the top of the protective cover, the protective cover is driven to move, and the limit plate at the bottom of the protective cover moves along the slide groove. The protective cover can be extended to one side, the top of the protective box can be protected, rainwater can be prevented from entering the vent, and the tester can be protected. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0016] Figure 2 It is a state structure schematic diagram of the utility model.

[0017] Figure 3 It is a schematic diagram of the structure of the fixing component of the utility model.

[0018] Figure 4 This is a schematic diagram of the protective component structure of the utility model.

[0019] Figure 5 This is a schematic diagram of the protective box structure of the utility model.

[0020] The accompanying drawings are marked as follows: 1. protective box; 2. tester; 3. storage frame; 4. fixing plate; 5. frame; 6. moving block; 7. moving rod; 8. pressure plate; 9. spring; 10. protective cover; 11. slide groove; 12. support frame; 13. cover plate; 14. ventilation plate; 15. connecting rod; 16. handle; 17. limit rod. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] As attached Figure 1-5 The contact resistance comprehensive tester shown includes a protective box 1 and a tester 2 installed inside the protective box 1. A storage frame 3 is provided on the top of one side of the protective box 1, and a protective component is provided on one side of the storage frame 3. Two fixed blocks are provided on one side of the protective box 1, and a fixed plate 4 is provided between the two fixed blocks, and a fixed component is provided on the fixed plate 4; the fixed component includes a plurality of frames 5 arranged on the fixed plate 4, and moving blocks 6 are provided on the top of the plurality of frames 5, and a moving rod 7 is provided at the bottom of the moving block 6. Moving holes are opened on the surfaces of the plurality of frames 5, and the bottom of the moving rod 7 passes through the moving hole and extends to the inside of the frame 5. A pressure plate 8 is provided at the bottom of the moving rod 7, and a spring 9 is provided on the moving rod 7 and located inside the frame 5, and the two ends of the spring 9 are respectively connected to the inner wall of the frame 5 and the surface of the pressure plate 8.

[0023] As attached Figure 2 , 4 As shown, the protective component includes a protective cover 10 arranged inside the storage frame 3, a pull ring is provided on the top of the protective cover 10, two slide grooves 11 are opened on the top surface of the protective box 1, the bottoms of both sides of the protective cover 10 are located inside the slide grooves 11, and limit plates are provided on the bottoms of both sides of the protective cover 10. The protective cover 10 is moved to cover the top of the protective box 1.

[0024] As attached Figure 1 As shown, two support frames 12 are provided at the bottom of the protection box 1. One side of the two support frames 12 is connected to the surface of the protection box 1 by bolts. The bottom of the protection box 1 can be raised by the support frames 12 to prevent the bottom of the protection box 1 from contacting rainwater.

[0025] As attached Figure 4 As shown, a cover plate 13 is provided on the surface of the protective box 1, a pull rod is provided on the top of the cover plate 13, two ventilation holes are provided on the surface of the cover plate 13, ventilation plates 14 are provided inside the two ventilation holes, and the pull rod is pulled to move the cover plate 13, so that the tester 2 can be taken and placed.

[0026] As attached Figure 1 As shown, connecting rods 15 are provided on both sides of the protective box 1, and rotating cylinders are sleeved on the two connecting rods 15. Handles 16 are provided on the tops of the two rotating cylinders. Pulling the handles 16 drives the rotating cylinders to rotate along the connecting rods 15, and moving the handles 16 to one side of the protective box 1 can prevent the handles 16 from blocking the opening and closing of the cover 13.

[0027] As attached Figure 3 As shown, limit rods 17 are provided on both sides of the moving block 6, and limit holes are opened on the surface of the frame 5 and on both sides of the moving hole. The bottoms of the two limit rods 17 pass through the limit holes and are connected to the surface of the pressure plate 8. When the moving block 6 moves, the limit rods 17 are driven to move along the limit holes, which can limit the moving block 6 and the pressure plate 8, avoid the displacement of the pressure plate 8, and make the pressure plate 8 move vertically along the frame 5.

[0028] Working principle of the utility model: when in use, first place the tester 2 inside the protective box 1, then connect the test line to the tester 2, pull the moving block 6 to drive the moving rod 7 and the limiting rod 17 to move along the moving hole and the limiting hole, which can drive the pressing plate 8 to move along the inside of the frame 5, so that the spring 9 is extended and retracted, and after the pressing plate 8 is lifted, the connecting line is placed at the bottom of the pressing plate 8, and then the elasticity of the spring 9 generates a thrust on the pressing plate 8, so that the pressing plate 8 drives the limiting rod 17 and the moving rod 7 to move. Since the cross section of the pressing plate 8 is an arc, it can fit with the surface of the test line, and then the test line can be squeezed and fixed;

[0029] When the protective box 1 is in an open-air environment, by pulling the pull ring on the top of the protective cover 10, the limit plate at the bottom of the protective cover 10 moves along the slide groove 11, and the limit plate can limit the protective cover 10, so that the surface protective cover 10 can fall off from the inside, thereby protecting the top of the protective box 1, preventing rain or foreign objects from entering the vent, and protecting the tester 2. The utility model can fix the test line through the pressure plate 8, and can protect the top of the protective box 1 through the protective cover 10 by ensuring the stability of the connection between the test line and the tester 2.

[0030] Finally: The above embodiments are only illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or change the above embodiments without violating the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the relevant technical field without departing from the spirit and technical ideas disclosed by the present invention should still be covered by the claims of the present invention.

Claims

1. A contact resistance comprehensive tester, comprising a protection box (1), and a tester (2) installed inside the protection box (1), characterized in that: A storage frame (3) is provided on the top of one side of the protection box (1), a protection component is provided on one side of the storage frame (3), two fixing blocks are provided on one side of the protection box (1), a fixing plate (4) is provided between the two fixing blocks, and a fixing component is provided on the fixing plate (4); The fixing assembly comprises a plurality of frames (5) arranged on a fixing plate (4), a moving block (6) being provided on the top of the plurality of frames (5), a moving rod (7) being provided on the bottom of the moving block (6), a moving hole being provided on the surface of the plurality of frames (5), the bottom of the moving rod (7) passing through the moving hole and extending into the interior of the frame (5), a pressing plate (8) being provided at the bottom of the moving rod (7), a spring (9) being provided on the moving rod (7) and located inside the frame (5), and the two ends of the spring (9) being respectively connected to the inner wall of the frame (5) and the surface of the pressing plate (8).

2. The contact resistance comprehensive tester according to claim 1, characterized in that: The protective component comprises a protective cover (10) arranged inside the storage frame (3), a pull ring is provided on the top of the protective cover (10), two slide grooves (11) are provided on the top surface of the protective box (1), the bottoms of both sides of the protective cover (10) are located inside the slide grooves (11), and limit plates are provided on the bottoms of both sides of the protective cover (10).

3. The contact resistance comprehensive tester according to claim 1, characterized in that: Two support frames (12) are provided at the bottom of the protection box (1), and one side of the two support frames (12) is connected to the surface of the protection box (1) by bolts.

4. The contact resistance comprehensive tester according to claim 1, characterized in that: The surface of the protection box (1) is provided with a cover plate (13), the top of the cover plate (13) is provided with a pull rod, the surface of the cover plate (13) is provided with two ventilation holes, and ventilation plates (14) are provided inside the two ventilation holes.

5. The contact resistance comprehensive tester according to claim 1, characterized in that: Connecting rods (15) are provided on both sides of the protection box (1), rotating cylinders are sleeved on the two connecting rods (15), and handles (16) are provided on the tops of the two rotating cylinders.

6. The contact resistance comprehensive tester according to claim 1, characterized in that: Limit rods (17) are provided on both sides of the moving block (6), and limit holes are provided on the surface of the frame (5) and on both sides of the moving hole. The bottoms of the two limit rods (17) pass through the limit holes and are connected to the surface of the pressure plate (8).

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