Loop resistance tester

Abstract

The utility model relates to a loop resistance tester which comprises a tester box body, the front end of the tester box body is provided with a control panel, the front end and the rear end of the outer side surface of the tester box body are uniformly provided with heat dissipation strip groups, and the four endpoints of the lower end of the tester box body are respectively provided with a placement stabilizing block; a main switch module is arranged on the left side of the control panel, a screen setting module is arranged on the right side of the main switch module, and a test port module is arranged on the right side of the screen setting module. And the influence of dust on the internal structure of the tester box handle is reduced.

Description

Technical Field

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

[0002] According to the requirements of the preventive test procedures for power equipment "DL / T 596-1996", the test current of the conductive loop resistance test of various switchgear shall not be less than 100A. The contact resistance increases due to contact surface oxidation, poor contact fastening and other reasons. When a large current flows, the temperature of the contact point rises, which accelerates the oxidation of the contact surface and further increases the contact resistance. If it continues, serious accidents will occur. Therefore, it is necessary to measure the contact resistance frequently or regularly.

[0003] Patent No. CN202022675492.8 discloses a loop resistance tester, which is formed by a box body with two cavities separated by a partition plate. One cavity is used to install and fix the loop resistance tester body, and the other cavity is provided with a column. A number of winding reels are sleeved on the column, which can be used to wind and receive the wires that need to be connected when the loop resistance tester is used, so that the wires will not be entangled with each other, thereby improving the convenience of using the wires and the service life of the wires. However, the tester has the following problems: first, the heat dissipation effect is poor and the service life is short. Second, it occupies a large space, has poor placement stability, is difficult to set up the test value range, and has a low degree of intelligence. Utility Model Content

[0004] The purpose of the utility model is to address the deficiencies of the prior art. By setting up a heat dissipation strip group, it can not only ensure that the tester box has a strong ability to resist extrusion and deformation, but also ensure a good overall heat dissipation effect, reduce the impact of dust on the internal structure of the tester box, and set a control panel to solve the technical problem that the loop resistance tester in the prior art is not highly intelligent and cannot adjust the measurement range value.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A loop resistance tester comprises a tester box, a control panel is arranged at the front end of the tester box, and heat dissipation strip groups are evenly arranged at the front and rear ends of the outer surface of the tester box, and four end positions at the lower end of the tester box are all provided with stabilizing blocks;

[0007] A control panel is provided with a main switch module on the left side of the control panel, a screen setting module is provided on the right side of the main switch module, and a test port module is provided on the right side of the screen setting module.

[0008] Preferably, the test port module comprises a cover, an upper hinge of the cover is connected to the tester box, and rectangular long holes are opened on the left and right sides of the outer surface of the cover, and a dustproof net is arranged in the rectangular long holes.

[0009] Preferably, three groups of indicator lights are provided at the upper inner end of the cover, a test connection port is provided at the lower end of the indicator light, a rubber sleeve is provided at the front end of the test connection port, and the rubber sleeve is a conical structure with an outer diameter larger than an inner diameter.

[0010] As a preferred embodiment, the heat sink group includes a heat sink, which is a right-angled trapezoidal structure, and the length of the upper end of the heat sink is smaller than the length of the lower end. The longest side of the heat sink is an arc structure, and the longest side of the heat sink is provided with a through hole, and the through hole passes through the tester box.

[0011] As a preference, the placement and stabilization block is a trapezoidal structure, and the area of ​​the lower end surface of the placement and stabilization block is smaller than the area of ​​the upper end surface, and the placement and stabilization block is made of rubber.

[0012] As another preferred embodiment, the rear end of the control panel is sleeved on the tester case, and the four sides of the control panel are higher than the height of the tester case, and the height of the control panel protruding from the surface of the tester case is the same as the height of the heat dissipation strip group.

[0013] Beneficial effects of the utility model:

[0014] (1) In the utility model, a control panel is provided, and the control panel is connected with the tester box at the rear end thereof. Then, the height of the heat dissipation strip group is made flush with the height of the control panel protruding from the tester box, so as to ensure that the tester box is not easily deformed when other equipment is placed on the upper end of the loop resistance tester, and the overall pressure resistance is good, thereby protecting the internal circuit module from damage.

[0015] (2) In the utility model, a heat sink group is provided, and the heat sink group is composed of evenly arranged heat sinks. The longest side of the heat sink is opened to reduce dust from entering the tester box, thereby maintaining the service life of the internal circuit group module. In addition, the upper end surface of the heat sink is flat, which facilitates the stable placement of other equipment structures on the upper end surface without affecting the heat dissipation effect of the loop resistance tester.

[0016] (3) In the present invention, a stabilizing block is provided to ensure that the entire loop resistance tester is stably placed, and the use of rubber material can provide a good shock-absorbing effect.

[0017] In summary, the device has the advantages of good pressure resistance and deformation resistance, good heat dissipation effect, and a rubber sleeve is used for buffering connection during the test connection line process to protect the interface from deformation. It is especially suitable for the field of resistance tester technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0020] Figure 2 It is a structural schematic diagram of the control panel in the utility model.

[0021] Figure 3 It is a structural schematic diagram of the heat dissipation strip in the utility model.

[0022] Figure 4 It is a structural schematic diagram of the cover in the utility model.

[0023] Figure 5 It is a schematic diagram of the structure for placing the stabilizing block in the utility model. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present utility model are clearly and completely described below in conjunction with the accompanying drawings.

[0025] Embodiment 1

[0026] like Figures 1 to 5 As shown, the utility model provides a loop resistance tester, including a tester box 1, a control panel 2 is provided at the front end of the tester box 1, and a heat dissipation strip group 3 is evenly provided at the front and rear ends of the outer surface of the tester box 1, and a stabilizing block 4 is placed at the four end positions of the lower end of the tester box 1;

[0027] A control panel 2 is provided with a main switch module 21 on the left side of the control panel 2 , a screen setting module 22 is provided on the right side of the main switch module 21 , and a test port module 23 is provided on the right side of the screen setting module 22 .

[0028] Furthermore, the test port module 23 includes a cover 231, the upper hinge of the cover 231 is connected to the tester box 1, and rectangular long holes 232 are opened on the left and right sides of the outer surface of the cover 231, and a dustproof net 233 is provided in the rectangular long hole 232. The setting of the cover 231 can protect the internal test port module 23 from interference from dust factors when the entire tester is not working, thereby ensuring high accuracy during long-term use.

[0029] Furthermore, three groups of indicator lights 234 are provided at the upper inner end of the cover 231, a test connection port 235 is provided at the lower end of the indicator light 234, and a rubber sleeve 236 is provided at the front end of the test connection port 235. The rubber sleeve 236 is a conical structure, and the outer diameter is larger than the inner diameter. The indicator lights 234 are convenient for workers to observe and have a high degree of intelligence. The rubber sleeve 236 is to prevent the interface from loosening due to long-term use and the occurrence of low measurement accuracy, thereby ensuring the safety performance of the overall measurement.

[0030] Furthermore, the heat sink group 3 includes a heat sink 31, which is a right-angled trapezoidal structure, and the upper end length of the heat sink 31 is smaller than the lower end length, the longest side of the heat sink 31 is an arc structure, and the longest side of the heat sink 31 is provided with a through hole, and the through hole passes through the tester case 1, the upper end surface of the heat sink 31 is a plane, and the longest side is an arc structure, and the through hole is opened at the position of the arc structure and passes through the inside of the tester case 1, which ensures the overall heat dissipation while improving the pressure resistance of the tester case 1, and even if the equipment is placed on the upper end of the tester case 1, the overall heat dissipation effect can be ensured, and the placement is stable to save equipment space.

[0031] Furthermore, the placing and stabilizing block 4 is a trapezoidal structure, and the area of ​​the lower end surface of the placing and stabilizing block 4 is smaller than the area of ​​the upper end surface. The placing and stabilizing block 4 is made of rubber material. The rubber material of the placing and stabilizing block 4 is for shock absorption to prevent the tester box 1 from working for a long time due to vibration affecting the tightness of the connection between the various components.

[0032] Furthermore, the rear end of the control panel 2 is connected to the tester case 1, and the four sides of the control panel 2 are higher than the height of the tester case 1. The height of the control panel 2 protruding from the surface of the tester case 1 is the same as the height of the heat dissipation strip group 3, so as to ensure that other equipment can also be placed on the upper end of the tester case 1, saving equipment placement space.

[0033] Working process: first, the main switch module 21 at the front end of the control panel 2 is used to control the power on and off of the entire tester, and then the screen setting module 22 can be used to multifunctionally set the debugging range value, and a screen is set at the upper end of the screen setting module 22, so that workers can intuitively see the numerical setting results, with a high degree of intelligence, and a cover 231 is set at the front end of the test port module 23, which can protect the test port in the test port module 23 from dust interference when not in use, ensuring the test accuracy of the tester for long-term use, and a rubber sleeve 236 is set at the front end of the test connection port 235 to prevent the interface from loosening when the test connection port 235 is connected to the external line, with a high safety factor;

[0034] It is worth mentioning that the setting of the heat dissipation strip group 3 ensures the overall heat dissipation while having outstanding pressure resistance and deformation resistance. The entire loop resistance tester has a high safety factor, high accuracy during long-term use, good pressure resistance, saves equipment placement space, and has outstanding heat dissipation effect.

[0035] In the description of the present invention, it should be understood that the terms "front and back", "left and right", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the equipment or components referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the utility model.

[0036] Of course, in the present technical solution, those skilled in the art should understand that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0037] The above is only a preferred specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art under the technical guidance of the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A loop resistance tester, characterized in that: include A tester box (1), wherein a control panel (2) is provided at the front end of the tester box (1), and heat dissipation strip groups (3) are evenly provided at the front and rear ends of the outer surface of the tester box (1), and stabilizing blocks (4) are provided at the four end positions of the lower end of the tester box (1); A control panel (2), wherein a main switch module (21) is provided on the left side of the control panel (2), a screen setting module (22) is provided on the right side of the main switch module (21), and a test port module (23) is provided on the right side of the screen setting module (22).

2. A loop resistance tester according to claim 1, characterized in that: The test port module (23) comprises a cover (231), the upper side of the cover (231) is hingedly connected to the tester box (1), and rectangular long holes (232) are opened on the left and right sides of the outer surface of the cover (231), and a dustproof net (233) is arranged in the rectangular long hole (232).

3. A loop resistance tester according to claim 2, characterized in that: The upper inner end of the cover (231) is provided with three groups of indicator lights (234), the lower end of the indicator lights (234) is provided with a test connection port (235), the front end of the test connection port (235) is provided with a rubber sleeve (236), and the rubber sleeve (236) is a conical structure, and the outer diameter is larger than the inner diameter.

4. A loop resistance tester according to claim 1, characterized in that: The heat dissipation bar group (3) comprises a heat dissipation bar (31), the heat dissipation bar (31) is a right-angled trapezoidal structure, the length of the upper end of the heat dissipation bar (31) is shorter than the length of the lower end, the longest side of the heat dissipation bar (31) is an arc-shaped structure, and the longest side of the heat dissipation bar (31) is provided with a through hole, and the through hole passes through the tester box (1).

5. A loop resistance tester according to claim 1, characterized in that: The placement and stabilization block (4) is of a trapezoidal structure, and the area of ​​the lower end surface of the placement and stabilization block (4) is smaller than the area of ​​the upper end surface; the placement and stabilization block (4) is made of rubber.

6. A loop resistance tester according to claim 1, characterized in that: The rear end of the control panel (2) is sleeved on the tester housing (1), and the four sides of the control panel (2) are higher than the height of the tester housing (1). The height of the control panel (2) protruding from the surface of the tester housing (1) is the same as the height of the heat dissipation strip group (3).

Images