Control loop contact resistance measuring device

Abstract

The utility model relates to the technical field of resistance testing, in particular to a control loop contact resistance value measuring device, which is characterized in that a placing groove is arranged on the top surface of a placing support plate, the bottom of a resistance testing mechanism box body is connected in the placing groove on the top surface of the placing support plate, and a buffer assembly comprises a spring I, a slide block, a hinge rod and a guide rail, the two guide rails are fixedly connected to the bottom face of the containing supporting plate, the two sliding blocks are slidably connected into the two guide rails correspondingly, the springs I are connected between the sides, away from each other, in the two guide rails and the sliding blocks, and the top ends of the two hinge rods are rotationally connected to the lower ends, extending out of the guide rails, of the two sliding blocks correspondingly. According to the utility model, the movement of the loop resistance testing mechanism is facilitated, the portability and the flexibility of the loop resistance testing mechanism are improved, the loop resistance testing mechanism does not need to be carried by an operator, and the physical output of the operator is reduced; buffering and damping of the loop resistance testing mechanism in the moving process are achieved, the service life is prolonged, and the moving stability is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of resistance testing, in particular to a control loop contact resistance measuring device. Background Art

[0002] Most of the multifunctional rapid measurement loop resistance test devices in the existing technology do not have a portable mechanism inside. When used later, the operator needs to manually carry the loop resistance test device. When carrying it to a place over a long distance, the operator needs to consume excessive physical strength, which reduces the portability and flexibility of the device. At the same time, most of the existing rapid measurement loop resistance test devices do not have a buffer structure inside. When a collision occurs during transportation later, some internal parts will directly become loose, thereby affecting the efficiency and accuracy of subsequent measurements. Utility Model Content

[0003] The purpose of the utility model is to provide a control circuit contact resistance measuring device, which is easy to move and highly portable, effectively protects the stability of the circuit resistance testing mechanism, and prolongs the service life of the device.

[0004] The resistance test mechanism of the prior art is placed in a box, and a box cover is rotatably connected to the top surface of the box. The resistance test mechanism includes a resistance display window, a current display window, a fuse seat, a power socket switch, a DC constant current source, a preamplifier and an A / D converter.

[0005] The utility model provides a control circuit contact resistance measuring device, which includes a placement tray, a mounting plate and a buffer assembly. The top surface of the placement tray is provided with a placement groove, the bottom of the resistance testing mechanism box is connected to the placement groove on the top surface of the placement tray, and casters are fixedly connected at the four corners of the bottom surface of the mounting plate. The buffer assembly includes a spring I, a slider, a hinged rod and a guide rail. The guide rails include two, both of which are fixedly connected to the bottom surface of the placement tray, and the two guide rails are symmetrical. There are two sliders, which are respectively slidably connected to the inside of the two guide rails, and the two sliders are connected to the side of the two guide rails close to each other. The lower ends of the two sliders extend out of the two guide rails, and the spring I is connected between the side away from the inside of the two guide rails and the slider. There are two hinged rods, and the top ends of the two hinged rods are respectively rotatably connected to the lower ends of the two sliders extending out of the guide rails. The two hinged rods are symmetrical, and the lower ends of the two hinged rods are rotatably connected to the top surface of the mounting plate.

[0006] The cam is secured to the underside of the base and has two L-shaped tabs that are symmetrical and have a snap fit to prevent the base from sliding into place when the cam is in a cam position.

[0007] Furthermore, a limiting rod is fixedly connected to the center of the bottom surface of the placement tray, a through hole is provided in the center of the mounting plate, the lower end of the limiting rod away from the bottom surface of the placement tray is slidably inserted into the through hole in the center of the mounting plate, and a boss is provided at the lower end of the limiting rod away from the bottom surface of the placement tray, the outer diameter of the boss is larger than the inner diameter of the through hole in the center of the mounting plate, the boss is provided below the mounting plate, and a spring II is connected between the mounting plate and the placement tray, and the spring II is sleeved on the limiting rod.

[0008] Furthermore, an N-shaped pull rod is included, which includes a horizontal rod and two vertical rods. The lower ends of the two vertical rods are respectively hinged on the left and right outer walls of the supporting plate.

[0009] Furthermore, a sleeve block is fixedly connected to the top surface of the mounting plate, the central through hole of the mounting plate passes through the sleeve block on the top surface of the mounting plate, the limit rod passes through the sleeve block on the top surface of the mounting plate through the through hole, and the lower ends of the two hinged rods are rotatably connected to the outer walls on the left and right sides of the sleeve block on the top surface of the mounting plate.

[0010] Furthermore, a rubber sleeve is sleeved on the center of the N-shaped pull rod cross bar.

[0011] Furthermore, the caster is a universal caster with a brake.

[0012] The beneficial effects of the present invention are as follows: the present invention facilitates the connection between the loop resistance testing mechanism and the placement tray through the arrangement of the installation component, facilitates the movement of the loop resistance testing mechanism through the arrangement of the N-type pull rod, the placement tray, the installation plate and the casters, thereby improving the portability and flexibility of the loop resistance testing mechanism, eliminating the need for an operator to carry it, and reducing the operator's physical exertion; through the arrangement of the buffer component, the limit rod and the spring II, buffering and shock absorption of the loop resistance testing mechanism during movement is achieved, preventing the internal parts of the loop resistance testing mechanism from loosening due to uneven road surfaces during movement, extending the service life and improving the movement stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a front sectional view of the present utility model;

[0014] Figure 2 This is the main view of the utility model;

[0015] Figure 3 This is a front sectional view of the tray placement of the utility model;

[0016] Figure 4 For the utility model Figure 3 A magnified schematic diagram of the structure at point A.

[0017] In the figure: 1. Loop resistance test mechanism; 2. Box cover; 3. N-type pull rod; 4. Placement tray; 5. Spring I; 6. Slider; 7. Caster; 8. Mounting plate; 9. Spring II; 10. Limit rod; 11. Articulated rod; 12. Guide rail; 13. Through slot; 14. L-type clamping rod; 15. Spring III; 16. Limit through slot. DETAILED DESCRIPTION

[0018] like Figures 1-4As shown, the utility model is a control circuit contact resistance measuring device including a placement tray 4, a mounting plate 8 and a buffer assembly. The placement tray 4 is provided with a placement groove on the top surface. The bottom of the resistance test mechanism 1 box is connected to the placement groove on the top surface of the placement tray 4. The four corners of the bottom surface of the mounting plate 8 are fixedly connected with casters 7. The casters 7 are universal casters with brakes. The buffer assembly includes a spring Ⅰ 5, a slider 6, a hinged rod 11 and a guide rail 12. The guide rail 12 includes two, and the two guide rails 12 are fixedly connected to the bottom surface of the placement tray 4. On the upper side, the two guide rails 12 are symmetrical, the sliders 6 are provided with two, the two sliders 6 are respectively slidably connected to the inside of the two guide rails 12, the two sliders 6 are connected to the side of the two guide rails 12 close to each other, and the lower ends of the two sliders 6 extend out of the two guide rails 12, the spring Ⅰ 5 is connected between the side away from the inside of the two guide rails 12 and the sliders 6, and there are two hinged rods 11. The top ends of the two hinged rods 11 are respectively rotatably connected to the lower ends of the two sliders 6 extending out of the guide rails 12, the two hinged rods 11 are symmetrical, and the lower ends of the two hinged rods 11 are rotated. Connected to the top surface of the mounting plate 8; the center of the bottom surface of the placing support plate 4 is fixedly connected to the limit rod 10, the center of the mounting plate 8 is provided with a through hole, the limit rod 10 is away from the lower end of the bottom surface of the placing support plate 4 and is slidably inserted into the central through hole of the mounting plate 8, the limit rod 10 is away from the lower end of the bottom surface of the placing support plate 4 and is provided with a boss, the outer diameter of the boss is larger than the inner diameter of the central through hole of the mounting plate 8, the boss is provided below the mounting plate 8, a spring Ⅱ 9 is connected between the mounting plate 8 and the placing support plate 4, the spring Ⅱ 9 is sleeved on the limit rod 10, and the top surface of the mounting plate 8 is fixed It is connected with a sleeve block, the central through hole of the mounting plate 8 passes through the sleeve block on the top surface of the mounting plate 8, the limit rod 10 passes through the sleeve block on the top surface of the mounting plate 8 through the through hole, and the lower ends of the two hinged rods 11 are rotatably connected to the outer walls on the left and right sides of the sleeve block on the top surface of the mounting plate 8. A hinged seat rotatably connected to the hinged rod 11 can also be provided on the sleeve block; it includes an N-type pull rod 3, the N-type pull rod 3 includes a horizontal rod and two vertical rods, the lower ends of the two vertical rods are respectively hinged on the left and right outer walls of the placement support plate 4, and a rubber sleeve is sleeved at the center of the horizontal rod of the N-type pull rod 3.

[0019] Furthermore, it includes a mounting assembly, which includes a through slot 13, an L-shaped card rod 14, a spring III 15 and a limit slot 16. The limit slot 16 is provided on the bottom surface of the resistance testing mechanism 1 box body, and there are two limit slots 16. The two limit slots 16 are symmetrical, and a card slot is provided on the side away from the two limit slots 16. The through slot 13 is provided on the bottom surface of the support plate 4, and the through slot 13 is connected to the placement slot for placing the support plate 4. There are two through slots 13, and the two through slots 13 are symmetrical. The two through slots 13 are respectively provided below the two limit slots 16, and the two through slots 1 3 are fixedly connected with support columns, two L-shaped card rods 14 are provided, and the two L-shaped card rods 14 are symmetrical. The lower ends of the two L-shaped card rods 14 are respectively slidably connected to the support columns in the two through slots 13, and the upper parts of the two L-shaped card rods 14 extend out of the through slots 13. The upper parts of the two L-shaped card rods 14 extending out of the through slots 13 are respectively clamped in the clamping slots of the two limit through slots 16. Two springs III 15 are provided, and the two springs III 15 are respectively sleeved on the support columns in the two through slots 13. The spring III 15 is connected between the side away from the inside of the two through slots 13 and the L-shaped card rod 14.

[0020] When the present invention is in use, the operator places the box body of the loop resistance testing mechanism 1 into the placement slot of the placement support plate 4, and at the same time pushes the two groups of L-shaped clamping rods 14 away from the inside of the through slot 13 to realize the compression operation of the spring III 15, and then the placement of the loop resistance testing mechanism 1 can drive the limiting through slot 16 to fit to the outside of the L-shaped clamping rod 14, and finally release the L-shaped clamping rod 14, and the elastic restoring force of the spring III 15 can drive the L-shaped clamping rod 14 to restore the insertion system to the inside of the limiting through slot 16, thereby completing the assembly of the placement support plate 4 and the above components with the loop resistance testing mechanism 1, holding the n-shaped pull rod 3 to drive the caster 7 to roll with the ground, and no manual carrying by the operator is required.

[0021] When the road surface becomes uneven during movement, the caster 7 can be pushed by the road surface to drive the mounting plate 8 to move upward on the outside of the limit rod 10, thereby realizing the compression operation of the spring II9. At this time, a primary buffering operation of the bumpy force can be realized through the spring II9. At the same time, the movement of the mounting plate 8 can also drive the hinged rod 11 to perform an articulated expansion operation, so that the hinged rod 11 pushes the slider 6 to move inside the guide rail 12 to realize the compression operation of the spring I5. Then, through the elastic buffering force of the spring I5, a secondary buffering operation of the excess bumpy force can be realized, thereby improving the stability of the later movement and reducing the impact on some internal parts of the loop resistance testing mechanism 1.

Claims

1. A control circuit contact resistance measuring device, comprising a circuit resistance testing mechanism (1), the resistance testing mechanism (1) being placed in a box, a box cover (2) being rotatably connected to the top surface of the box of the resistance testing mechanism (1), the resistance testing mechanism (1) comprising a resistance display window, a current display window, a fuse seat, a power socket switch, a DC constant current source, a preamplifier and an A / D converter, characterized in that: The invention comprises a placing support plate (4), a mounting plate (8) and a buffer assembly, wherein a placing groove is provided on the top surface of the placing support plate (4), the bottom of the resistance test mechanism (1) box is connected to the placing groove on the top surface of the placing support plate (4), and casters (7) are fixedly connected at the four corners of the bottom surface of the mounting plate (8). The buffer assembly comprises a spring I (5), a slider (6), a hinged rod (11) and a guide rail (12), wherein the guide rail (12) comprises two, and the two guide rails (12) are fixedly connected to the bottom surface of the placing support plate (4), and the two guide rails (12) are symmetrical, and the slider (6) is provided with two, and the two sliders are fixed with two. (6) are respectively slidably connected to the inside of the two guide rails (12), the two sliders (6) are connected to the side of the two guide rails (12) that are close to each other, and the lower ends of the two sliders (6) extend out of the two guide rails (12). The spring I (5) is connected between the side of the two guide rails (12) that are away from each other and the sliders (6). Two hinged rods (11) are provided, and the top ends of the two hinged rods (11) are respectively rotatably connected to the lower ends of the two sliders (6) extending out of the guide rails (12). The two hinged rods (11) are symmetrical, and the lower ends of the two hinged rods (11) are both rotatably connected to the top surface of the mounting plate (8).

2. A control circuit contact resistance measuring device according to claim 1, characterized in that: The invention comprises an installation component, wherein the installation component comprises a through slot (13), an L-shaped clamping rod (14), a spring III (15) and a limit through slot (16), wherein the limit through slot (16) is provided on the bottom surface of the box body of the resistance test mechanism (1), and two limit through slots (16) are provided, the two limit through slots (16) are symmetrical, and a clamping slot is provided on one side away from each other inside the two limit through slots (16), and the through slot (13) is provided on the bottom surface of the support plate (4), and the through slot (13) is communicated with the placement slot for placing the support plate (4), and two through slots (13) are provided, the two through slots (13) are symmetrical, and the two through slots (13) are respectively provided below the two limit through slots (16), and the two through slots (13) are provided below the two limit through slots (16). ) are fixedly connected with support columns, two L-shaped clamping rods (14) are provided, the two L-shaped clamping rods (14) are symmetrical, the lower ends of the two L-shaped clamping rods (14) are respectively slidably connected to the support columns in the two through slots (13), the upper parts of the two L-shaped clamping rods (14) are extended out of the through slots (13), and the upper parts of the two L-shaped clamping rods (14) extended out of the through slots (13) are respectively clamped in the clamping slots of the two limit through slots (16), two springs III (15) are provided, the two springs III (15) are respectively sleeved on the support columns in the two through slots (13), and the spring III (15) is connected between the side away from the inside of the two through slots (13) and the L-shaped clamping rod (14).

3. A control circuit contact resistance measuring device according to claim 2, characterized in that: The center of the bottom surface of the placement support plate (4) is fixedly connected to a limiting rod (10), the center of the mounting plate (8) is provided with a through hole, the lower end of the limiting rod (10) away from the bottom surface of the placement support plate (4) is slidably inserted into the central through hole of the mounting plate (8), the lower end of the limiting rod (10) away from the bottom surface of the placement support plate (4) is provided with a boss, the outer diameter of the boss is larger than the inner diameter of the central through hole of the mounting plate (8), the boss is provided below the mounting plate (8), a spring II (9) is connected between the mounting plate (8) and the placement support plate (4), and the spring II (9) is sleeved on the limiting rod (10).

4. A control circuit contact resistance measuring device according to claim 3, characterized in that: The N-shaped pull rod (3) comprises a horizontal rod and two vertical rods, and the lower ends of the two vertical rods are respectively hinged to the left and right outer walls of the supporting plate (4).

5. The control circuit contact resistance measuring device according to claim 4, characterized in that: A sleeve block is fixedly connected to the top surface of the mounting plate (8), a central through hole of the mounting plate (8) passes through the sleeve block on the top surface of the mounting plate (8), a limiting rod (10) passes through the sleeve block on the top surface of the mounting plate (8) through the through hole, and the lower ends of the two hinged rods (11) are rotatably connected to the outer walls on the left and right sides of the sleeve block on the top surface of the mounting plate (8).

6. A control circuit contact resistance measuring device according to claim 5, characterized in that: The center of the crossbar of the N-shaped pull rod (3) is sleeved with a rubber sleeve.

7. A control circuit contact resistance measuring device according to any one of claims 1 to 6, characterized in that: The caster (7) is a universal caster with a brake.

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