Loop resistance tester

Abstract

The utility model discloses a loop resistance tester, relates to the technical field of test instruments, and aims to solve the technical problems that when a current loop resistance tester is used after a box is opened, dust and impurities are easy to be contaminated and enter a slot, and the current loop resistance tester is inconvenient to clean and the sealing performance between a machine cover and a machine box is reduced at the same time. Comprising a machine case body and a machine cover body hinged to the machine case body, resistance measuring equipment is fixedly installed at the bottom in the machine cover body, a control panel is fixedly installed at the top in the machine cover body, a hollow rubber sealing strip is arranged at the top end of the machine case body in a bonded mode, and a sealing groove is formed in the bottom end of the machine cover body. According to the utility model, an integrated arrangement mode is adopted, testing is efficiently completed, impurities in the sealing groove can be adhered out through the hollow rubber sealing strip which is arranged in a protruding manner, the sealing groove is filled with the impurities, a worker can conveniently wipe and clean the sealing groove, and the sealing effect of the case main body and the cover main body is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of testing instruments, and more particularly to a loop resistance tester. Background Art

[0002] The loop resistance tester is designed using a combination of digital circuit technology and switching power supply technology. It is suitable for measuring the contact resistance and loop resistance of switch control equipment. It accepts a DC test current of 100A / 200A. It can directly measure the loop resistance and contact resistance at 100A / 200A and display the results digitally. With its accurate measurement and stable performance, the switch loop resistance tester is suitable for on-site high-voltage switch maintenance in power and power supply departments and for loop resistance testing in high-voltage switchgear factories.

[0003] However, the loop resistance tester in the existing technology mainly houses the test equipment through a chassis and plays a protective role. However, since it needs to be opened for operation when in use, the waterproof method of the interlocking fit is mainly to improve the sealing between the chassis and the cover by inserting the key into the slot. However, when it is unpacked for use, the slot is easily contaminated and enters dust and impurities, which is inconvenient to clean and also reduces the sealing between the cover and the chassis. In view of this, we propose a loop resistance tester. Utility Model Content

[0004] The purpose of the utility model is to overcome the shortcomings of the existing technology, meet the actual needs, and provide a loop resistance tester to solve the technical problem that when the current loop resistance tester is unpacked and used, the slot is easily contaminated and enters dust and impurities, which is inconvenient to clean and also reduces the sealing between the cover and the chassis.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: a loop resistance tester, comprising a chassis body and a cover body hingedly connected to the chassis body;

[0006] A resistance measuring device is fixedly installed at the bottom of the cover body, and a control panel is fixedly installed at the top of the cover body;

[0007] A hollow rubber sealing strip is bonded to the top of the chassis body, and a sealing groove is provided at the bottom of the cover body for the hollow rubber sealing strip to be pressed into. The hollow rubber sealing strip is pressed into the sealing groove and deformed to achieve sealing action;

[0008] Two wrenches are symmetrically hingedly installed on one side of the cover body, and two hanging seats are symmetrically constructed at one end of the chassis body, and the two wrenches are hung and connected to the corresponding hanging seats.

[0009] The utility model cooperates a chassis main body provided with a hollow rubber sealing strip with a cover main body provided with a sealing groove. When the cover main body and the chassis main body are closed, the hollow rubber sealing strip presses into the sealing groove and deforms due to pressure to fill the sealing groove. Then, two wrenches are engaged with corresponding mounting seats to ensure an extruded state, so that the hollow rubber sealing strip presses into the sealing groove and fills the sealing groove, thereby improving the sealing effect of the chassis main body and the cover main body. In addition, the protruding hollow rubber sealing strip can stick out impurities in the sealing groove, making it convenient for staff to wipe and clean the hollow rubber sealing strip, thereby ensuring the sealing effect of the chassis main body and the cover main body.

[0010] Preferably, the control panel includes a panel body, and a display screen and a printer are centrally arranged on the top of the panel body.

[0011] Preferably, an I+ interface, a U+ interface, an I- interface, and a U- interface are provided on one side of the top of the panel body, and the I+ interface, U+ interface, I- interface, and U- interface are all connected to the resistance measuring device.

[0012] Preferably, a power input interface and a power switch are provided on one side of the top of the panel body, and both the power input interface and the power switch are electrically connected to the resistance measuring device.

[0013] Preferably, a USB interface and a communication interface are provided on the other side of the top of the panel body, and both the USB interface and the communication interface are electrically connected to the resistance measuring device.

[0014] Preferably, a hook is constructed at one end of the wrench, and the hook is hung and connected to the hanging seat, and a handle is hingedly installed in the center of one side of the chassis body.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] 1. The utility model cooperates a chassis main body provided with a hollow rubber sealing strip with a cover main body provided with a sealing groove. When the cover main body and the chassis main body are closed, the hollow rubber sealing strip is pressed into the sealing groove and deformed due to pressure to fill the sealing groove. Then, two wrenches are used to cooperate with the corresponding hanging seats to ensure the extrusion state, so that the hollow rubber sealing strip is pressed into the sealing groove and fills the sealing groove, thereby improving the sealing effect of the chassis main body and the cover main body. In addition, the protruding hollow rubber sealing strip can stick out impurities in the sealing groove, making it convenient for staff to wipe and clean the hollow rubber sealing strip, thereby ensuring the sealing effect of the chassis main body and the cover main body.

[0017] 2. The utility model also uses the setting of the control panel. When the test clamps connected to the I+ interface, U+ interface, I- interface, and U- interface are set on both sides of the object to be tested, the readings are displayed on the display screen. The integrated layout can efficiently complete the test. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the internal structure of the utility model;

[0020] Figure 3 It is a top view of the utility model in the unfolded state.

[0021] Description of the numbers in the figure:

[0022] 1. Chassis body; 2. Cover body; 3. Control panel; 301. Panel body; 302. Display screen; 303. Printer; 304. I+ interface; 305. U+ interface; 306. I- interface; 307. U- interface; 308. Power input interface; 309. Power switch; 310. USB interface; 311. Communication interface; 4. Hollow rubber sealing strip; 5. Sealing groove; 6. Wrench; 601. Hook; 7. Mounting seat; 8. Handle DETAILED DESCRIPTION

[0023] like Figure 1 As shown, the utility model relates to a loop resistance tester, comprising a chassis body 1 and a cover body 2 hingedly connected to the chassis body 1;

[0024] like Figure 1 、 Figure 2As shown, in the embodiment of the present utility model, in order to ensure the sealing effect of the chassis body 1 and the cover body 2, a resistance measuring device is fixedly installed at the bottom of the cover body 2, and a control panel 3 is fixedly installed at the top of the cover body 2. A hollow rubber sealing strip 4 is bonded to the top of the chassis body 1, and a sealing groove 5 for the hollow rubber sealing strip 4 to be pressed into the bottom end of the cover body 2. The hollow rubber sealing strip 4 is pressed into the sealing groove 5 and deformed under pressure to achieve sealing action. Two wrenches 6 are symmetrically hinged on one side of the cover body 2, and two mounting seats 7 are symmetrically constructed at one end of the chassis body 1. The two wrenches 6 are both mounted and connected with the corresponding mounting seats 7. The chassis main body 1 provided with a hollow rubber sealing strip 4 is coordinated with the cover main body 2 provided with a sealing groove 5. When the cover main body 2 and the chassis main body 1 are closed, the hollow rubber sealing strip 4 is pressed into the sealing groove 5 and deformed due to pressure to fill the sealing groove 5. Then, the two wrenches 6 and the corresponding hanging seats 7 are hung together to ensure the extrusion state, so that the hollow rubber sealing strip 4 is pressed into the sealing groove 5 and fills the sealing groove 5, thereby improving the sealing effect of the chassis main body 1 and the cover main body 2. The protruding hollow rubber sealing strip 4 can stick out impurities in the sealing groove 5, making it convenient for the staff to wipe and clean the hollow rubber sealing strip 4, thereby ensuring the sealing effect of the chassis main body 1 and the cover main body 2.

[0025] like Figure 2 、 Figure 3 As shown, in the embodiment of the present utility model, in order to efficiently complete the test, the control panel 3 includes a panel body 301, a display screen 302 and a printer 303 are arranged in the center of the top of the panel body 301, an I+ interface 304, a U+ interface 305, an I- interface 306, and a U- interface 307 are arranged on one side of the top of the panel body 301, and the I+ interface 304, the U+ interface 305, the I- interface 306, and the U- interface 307 are all connected to the resistance measuring device, and a power input interface 308 and a power switch 309 are arranged on one side of the top of the panel body 301. 09, and the power input interface 308 and the power switch 309 are both electrically connected to the resistance measuring device, a USB interface 310 and a communication interface 311 are provided on the other side of the top of the panel body 301, and the USB interface 310 and the communication interface 311 are both electrically connected to the resistance measuring device. Through the setting of the control panel 3, when the test clamps connected to the I+ interface 304, the U+ interface 305, the I- interface 306, and the U- interface 307 are set on both sides of the object to be measured, the readings are displayed through the display screen 302, and the integrated layout can efficiently complete the test.

[0026] like Figure 1 、 Figure 2As shown in the figure, in the embodiment of the present utility model, in order to ensure the deformation state of the hollow rubber sealing strip 4 in the sealing groove 5, a hook 601 is constructed at one end of the wrench 6, and the hook 601 is hung and connected to the hanging seat 7. A handle 8 is hingedly installed in the center of one side of the chassis body 1. When the chassis body 1 and the cover body 2 are closed, the hollow rubber sealing strip 4 is pressed into the sealing groove 5 and fills the sealing groove 5, and the two wrenches 6 are bent, and the hooks 601 set at one end of the two wrenches 6 are hung on the corresponding hanging seat 7 to ensure the deformation state of the hollow rubber sealing strip 4 in the sealing groove 5.

[0027] Among them, it has an automatic testing function that can automatically start and stop the test; automatically save and print the test data; and can perform continuous testing without operating the instrument, greatly reducing labor intensity.

[0028] Among them, it has an ultra-wide measurement range of 0-150mΩ.

[0029] Among them, it has voice broadcast and prompt functions, which can broadcast the instrument test status and final test data values; the voice is loud and clear, which improves work efficiency.

[0030] Among them, it has a 5.6-inch ultra-large industrial-grade high-brightness color LCD screen, which can still be clearly seen under strong sunlight.

[0031] Among them, it has high stability and high reliability, and good heat dissipation design; it can test continuously for 1 minute under the maximum test current of 100A, meeting the national standard requirements; it can conduct multiple tests continuously to meet various application scenarios on site.

[0032] Among them, it has an RS232 communication interface 311, which can realize remote control of the instrument and data uploading.

[0033] Among them, it has multiple current options of 100A / 80A / 50A / 30A, making the test more flexible.

[0034] Among them, it has multiple protection functions such as overvoltage protection, open circuit protection, and overheat protection.

[0035] Among them, it has a built-in large-capacity memory that can store 800 test records.

[0036] The device is provided with a USB interface 310, which can be connected to an external USB flash drive to import test data into the USB flash drive, making it easier to write test reports.

[0037] Working principle: This embodiment provides a loop resistance tester. When in use, the plug connected to the test clamp is inserted into the I+ interface 304, U+ interface 305, I- interface 306, and U- interface 307 respectively, and then the power plug is inserted into the power input interface 308. Then, the power switch 309 is turned on, and the test clamp can be placed on both sides of the object to be tested, so that the test reading is displayed on the display screen 302 and the data is printed through the printer 303. Alternatively, an external U disk is inserted into the USB interface 310 to import the test data into the U disk. After the test is completed, the cover body 2 is flipped over to open the cover body. The body 2 is closed on the top of the chassis body 1, so that the hollow rubber sealing strip 4 is pressed into the sealing groove 5 and deformed due to pressure to fill the sealing groove 5, and then the two wrenches 6 and the corresponding hanging seats 7 are hung together to ensure the extrusion state, so that the hollow rubber sealing strip 4 is pressed into the sealing groove 5 and fills the sealing groove 5, thereby improving the sealing effect of the chassis body 1 and the cover body 2, and the protruding hollow rubber sealing strip 4 can stick out impurities in the sealing groove 5, which is convenient for the staff to wipe and clean the hollow rubber sealing strip 4, thereby ensuring the sealing effect of the chassis body 1 and the cover body 2, and having strong practicality.

[0038] The embodiments disclosed in the present invention are preferred embodiments, but are not limited to them. Ordinary technicians in this field can easily understand the spirit of the present invention based on the above embodiments and make different extensions and changes. As long as they do not deviate from the spirit of the present invention, they are all within the scope of protection of the present invention.

Claims

1. A loop resistance tester, characterized in that: It comprises a chassis main body (1) and a cover main body (2) hingedly connected to the chassis main body (1); A resistance measuring device is fixedly installed on the bottom of the cover body (2), and a control panel (3) is fixedly installed on the top of the cover body (2); A hollow rubber sealing strip (4) is bonded to the top of the chassis body (1), and a sealing groove (5) is provided at the bottom of the cover body (2) for the hollow rubber sealing strip (4) to be pressed into. The hollow rubber sealing strip (4) is pressed into the sealing groove (5) and deformed under pressure to achieve a sealing action; Two wrenches (6) are symmetrically hingedly mounted on one side of the cover body (2), and two hanging seats (7) are symmetrically constructed on one end of the chassis body (1), and both of the two wrenches (6) are hung and connected to the corresponding hanging seats (7).

2. The loop resistance tester according to claim 1, characterized in that: The control panel (3) comprises a panel body (301), and a display screen (302) and a printer (303) are arranged in the center of the top of the panel body (301).

3. The loop resistance tester according to claim 2, characterized in that: An I+ interface (304), a U+ interface (305), an I- interface (306), and a U- interface (307) are provided on one side of the top of the panel body (301), and the I+ interface (304), the U+ interface (305), the I- interface (306), and the U- interface (307) are all connected to the resistance measuring device.

4. The loop resistance tester according to claim 3, characterized in that: A power input interface (308) and a power switch (309) are provided on one side of the top of the panel body (301), and both the power input interface (308) and the power switch (309) are electrically connected to the resistance measuring device.

5. The loop resistance tester according to claim 3, characterized in that: A USB interface (310) and a communication interface (311) are provided on the other side of the top of the panel body (301), and both the USB interface (310) and the communication interface (311) are electrically connected to the resistance measuring device.

6. The loop resistance tester according to claim 1, characterized in that: One end of the wrench (6) is constructed with a hook (601), and the hook (601) is hung and connected to the hanging seat (7), and a handle (8) is hingedly installed in the center of one side of the chassis body (1).

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