Single-jaw grounding resistance testing device

Abstract

The invention relates to the technical field of resistance testers, discloses a single-jaw grounding resistance testing device, and solves the problems that a handheld single-jaw grounding resistance tester is easily shaken by hands due to poor stability, so that a grounding wire is in contact with the inner wall of a clamp, and the testing result is influenced. The driving mechanism is pulled by fingers to move, the arc-shaped pincers are driven by the transmission mechanism to move at the same time, gas in the shell is conveyed into the piston pipe through the gas pipe in the moving process of the arc-shaped pincers, expansion of the clamping piece is achieved, an object can be placed in the opening, then the fingers are loosened, and the driving mechanism is reset. And the transmission mechanism drives the arc-shaped clamp pieces to reset at the same time, and the extruded gas is sucked back into the shell again, so that the to-be-detected object is clamped, and the situation that the object is in contact with the inner wall of the clamp due to shaking of the hand, and consequently the test result is affected is prevented.

Description

Technical Field

[0001] The invention relates to the technical field of resistance testers, in particular to a single-jaw grounding resistance testing device. Background Art

[0002] The ground resistance meter is a resistance measuring device used in power, post and telecommunications, railways, communications, mining and other departments to measure the ground resistance of various devices and the resistance value of low-resistance conductors; it can also measure soil resistivity and ground voltage. The clamp-type ground resistance meter is a common ground resistance test device.

[0003] The existing Chinese patent with publication number CN221199799U discloses a ground resistance test device. The thumb is aligned with the buckle hole, and the clamping plate and the limit spring are pressed down. The clamping plate slides down along the slide groove of the inner wall of the buckle hole, and the thumb is inserted into the buckle hole. The clamping plate is pushed up under the rebound action of the limit spring, and the clamping action of the thumb is completed under the cooperation of the buckle hole, thereby increasing the stability of the tester body held in hand after wearing insulating gloves, preventing the friction of holding the device after wearing insulating gloves from decreasing and causing it to fall, thereby avoiding damage to the instrument due to falling. When using the device for resistance testing, the pressing plate is pressed by the fingers, and the pressing plate presses down the pressing spring at the same time. The pressing plate starts to rotate under the auxiliary action of the connecting shaft, driving the right monitoring clamp and the left monitoring clamp to separate and clamp to measure resistance. The circular groove provided on the pressing plate increases the friction between the fingers and the pressing plate, making it easy to hold and press the pressing plate.

[0004] However, when the clamp-type ground resistance meter is actually used, the clamp needs to be wrapped around the ground wire and wait for a few seconds for testing, and the ground wire cannot contact the inner wall of the clamp. The clamp-type ground resistance meter is handheld and has poor stability. The ground wire can easily contact the inner wall of the clamp due to shaking of the hand, thus affecting the test results.

[0005] Therefore, a single-jaw ground resistance testing device is needed. Summary of the invention

[0006] In order to solve all or part of the above problems, the purpose of the present invention is to provide a single-jaw ground resistance testing device to solve the problem that the handheld single-jaw ground resistance tester proposed in the above-mentioned comparative document technology is easily affected by the shaking of the hand due to poor stability, which causes the ground wire to contact with the inner wall of the clamp, thereby affecting the test results.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a single-jaw grounding resistance test device, comprising a tester body, a driving mechanism is arranged inside the tester body, an arc-shaped clamp is arranged at one end of the tester body, a clamping assembly is arranged at the lower end of the tester body, the tester body comprises a shell, a transmission mechanism is arranged inside the shell, the transmission mechanism is meshed and connected with the driving mechanism, the arc-shaped clamp is threaded and movably connected with the transmission mechanism, the clamping assembly comprises a gas pipe, one end of the gas pipe is fixedly connected and communicated with the shell, a piston tube is fixedly installed at the other end of the gas pipe, clamps are slidably installed at both ends of the inner side of the piston tube, the driving mechanism is pulled horizontally by fingers, and during the process, the transmission mechanism is meshed and connected with the driving mechanism, thereby driving the transmission mechanism to achieve a transmission effect, and driving the arc-shaped clamp to move horizontally, the driving mechanism and the arc-shaped clamp are meshed and connected, and the arc-shaped clamp is threaded and movably connected. The horizontal movement between the two parts is in a vertical cross direction. At this time, the driving mechanism and the arc clamp move away from each other, and the arc clamp squeezes the gas inside the shell into the gas tube during the horizontal movement, and finally enters the piston tube, so that the two groups of clamps are displaced to both sides with the piston tube as the center, and the device can be moved as a whole to the periphery of the object of resistance to be measured to wrap it. Then the finger releases the driving mechanism to reset it back to the initial state. During the resetting process of the driving mechanism, the transmission mechanism is driven to transmit in the opposite direction to the previous direction, and the arc clamp is driven back to the initial state. In this process, the gas in the piston tube is sucked back into the shell through the gas tube, so that the two groups of clamps move toward the center of the piston tube at the same time, completing the clamping of the object to be tested, thereby preventing the object from contacting the inner wall of the clamp due to the shaking of the hand, thereby affecting the test results.

[0008] Furthermore, the shell includes a rectangular plate, a rectangular groove and a circular groove are provided inside the rectangular plate, the rectangular groove is communicated with the circular groove, the driving mechanism includes a straight clamp, the straight clamp matches the rectangular groove and is slidably connected, a pull rod is fixedly installed at one end of the straight clamp, the pull rod is installed through the inside of the rectangular plate and is slidably connected, a limit plate is fixedly installed at one end of the pull rod away from the straight clamp, a finger groove is provided on one side of the limit plate, when in use, first put the finger in the finger groove and then pull, thereby driving the limit plate and the pull rod, so that the straight clamp retreats into the rectangular groove, which is convenient for subsequent detection operations.

[0009] Furthermore, the upper end of the pull rod is arranged with a plurality of tooth grooves, the interior of the rectangular plate is provided with a plurality of transmission grooves, and the surface of the transmission groove is fixedly installed with a plurality of fixing rings, the clamping assembly includes a transmission rod 1, one end of the transmission rod 1 is fixedly installed with a gear, the gear is meshingly connected with the tooth groove, the other end of the transmission rod 1 is fixedly installed with a bevel gear, one side of the bevel gear is meshingly connected with a transmission rod 2, both ends of the transmission rod 2 are fixedly installed with bevel gears, the end of the transmission rod 2 away from the transmission rod 1 is meshingly connected with a reciprocating screw rod, and the end of the reciprocating screw rod close to the transmission rod 2 is fixedly installed with a bevel gear, the arc-shaped clamp includes a U-shaped clamp, one side of the U-shaped clamp is fixedly installed with a driven plate, the driven plate is movably connected with the reciprocating screw rod thread. Because the gear is meshingly connected with the tooth groove, the pull rod drives the transmission rod 1 to rotate during the movement, the transmission rod 1 drives the transmission rod 2 to rotate, and the transmission rod 2 drives the reciprocating screw rod to rotate, thereby driving the driven plate to drive the U-shaped clamp to reciprocate, thereby realizing the simultaneous operation of the straight clamp and the U-shaped clamp, making it faster during use.

[0010] Furthermore, a slide groove 1 is provided inside the rectangular plate, a baffle is fixedly installed at one end of the slide groove 1, a reciprocating screw is installed through the baffle and is rotatably connected, an air hole is provided inside the rectangular plate, one end of the air hole is connected to the slide groove 1, and the other end of the air hole is fixedly connected to and connected with the gas pipe, telescopic plates are fixedly installed on both sides of the driven plate, one end of the telescopic plate away from the driven plate is fixedly connected to the rectangular plate, the driven plate matches the slide groove 1 and is slidably connected, and the baffle and the telescopic plate are arranged so that the slide groove 1 is in a closed state in the rectangular plate, so that when the driven plate moves in the slide groove 1, the gas enters the piston tube and moves away from the piston tube through the air hole, thereby realizing the clamping effect of the clamping member.

[0011] Furthermore, the clamping parts are provided with two groups, and their structural composition and functions are exactly the same. The clamping parts include a piston rod, which is located inside the piston tube and slidably connected. A splint is fixedly installed on the end of the piston rod away from the piston tube, and a telescopic rod is fixedly installed on the side where the two groups of splints are close to each other. A rubber arc splint is fixedly installed on the end of the telescopic rod away from the splint. The splint and the rubber arc splint are moved by the piston rod to achieve clamping of the object to be tested, thereby preventing the object from contacting the inner wall of the clamp due to shaking of the hand, thereby preventing the test result from affecting the test result.

[0012] Furthermore, a spring is arranged on the outside of the telescopic rod, one end of the spring is fixedly connected to the clamping plate, and the other end of the spring is fixedly connected to the rubber arc clamping plate. Through the setting of the spring, the clamping effect of objects to be detected with different diameters can be met, which greatly increases its practicality. The setting of the telescopic rod enhances the stability of the spring during the deformation process.

[0013] Furthermore, a buffer pad is fixedly installed at one end of the straight clamp close to the pull rod. During the pulling process, the pulling force of the fingers may be too large, which may cause a large impact force between the straight clamp and the rectangular plate, thereby causing damage to the magnet inside the straight clamp. The setting of the buffer pad can effectively reduce the impact force, form a buffering effect and thus extend its service life.

[0014] Furthermore, a fixed ring plate is fixedly installed on the surface of the circular groove, and a reset spring is fixedly installed on one end of the fixed ring plate. The end of the reset spring away from the fixed ring plate is fixedly connected to the buffer pad. When the finger pulls the pull rod, the reset spring will be compressed, but when the finger is released, the reset spring will reset and drive the straight clamp and the pull rod back to the initial state, thereby realizing automatic reset and driving the realization of subsequent effects.

[0015] Furthermore, a slider is fixedly installed on one side of the limit plate, a handle is fixedly installed on the outer side of the rectangular plate, a second slide groove is opened on the outer surface of the handle, the slider matches and is slidably connected to the second slide groove, a fixing piece is fixedly installed on one side of the piston tube, and the fixing piece is fixedly connected to the rectangular plate. By matching and slidably connecting the slider to the second slide groove, the stability of the driving mechanism during the pulling process is greatly improved, and at the same time, the pull rod is effectively prevented from rotating, thereby ensuring the normal engagement of the gear and the tooth groove. The setting of the fixing piece greatly improves the overall structural strength of the clamping assembly.

[0016] Furthermore, a display screen and a knob are fixedly mounted on the upper end of the rectangular plate. The display screen allows for direct display of the detection data, making it convenient for users to read it on site, while the knob allows for quick use by operators.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] The present invention provides a single-jaw grounding resistance testing device, which moves horizontally by pulling a driving mechanism with fingers. During the process, the transmission mechanism is meshed and connected with the driving mechanism, thereby driving the transmission mechanism to achieve a transmission effect and driving the arc-shaped clamp to move horizontally. The horizontal movement between the driving mechanism and the arc-shaped clamp is in a vertical cross direction. At this time, the driving mechanism and the arc-shaped clamp are away from each other, and the arc-shaped clamp squeezes the gas inside the shell into the gas tube during the horizontal movement, and finally enters the piston tube, so that the two groups of clamps are displaced to both sides with the piston tube as the center, so that the device can be moved as a whole to the periphery of the object to be tested to wrap it, and then the finger releases the driving mechanism to reset it back to the initial state. During the resetting process of the driving mechanism, the transmission mechanism is driven to transmit in the opposite direction to the previous direction, and the arc-shaped clamp is driven back to the initial state. In this process, the gas in the piston tube is re-sucked back into the shell through the gas tube, so that the two groups of clamps move toward the center of the piston tube at the same time, complete the clamping of the object to be tested, and prevent the object from contacting the inner wall of the clamp due to the shaking of the hand, thereby affecting the test result. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 It is a schematic diagram of the main structure of the tester of the present invention;

[0021] Figure 3 It is a schematic diagram of the housing structure of the present invention;

[0022] Figure 4 It is a schematic diagram of the housing structure of the present invention;

[0023] Figure 5 It is a schematic diagram of the structure of the arc-shaped clamp of the present invention;

[0024] Figure 6 It is a schematic diagram of the structure of the clamping assembly of the present invention;

[0025] Figure 7 It is a schematic diagram of the driving mechanism structure of the present invention;

[0026] Figure 8 It is a schematic diagram of the transmission mechanism structure of the present invention.

[0027] In the figure: 1. Tester body; 11. Shell; 111. Rectangular plate; 1111. Rectangular groove; 1112. Circular groove; 1113. Fixed ring plate; 1114. Return spring; 1115. Transmission groove; 1116. Fixed ring; 1117. Slideway 1; 1118. Baffle; 1119. Air hole; 112. Handle; 1121. Slideway 2; 113. Display screen; 114. Use knob; 12. Transmission mechanism; 121. Transmission rod 1; 122. Gear; 123. Bevel gear; 124 , transmission rod 2; 125, reciprocating screw; 2, driving mechanism; 21, straight clamp; 22, buffer pad; 23, pull rod; 24, tooth groove; 25, limit plate; 26, finger groove; 27, slider; 3, arc clamp; 31, U-shaped clamp; 32, driven plate; 33, telescopic plate; 4, clamping assembly; 41, gas pipe; 42, piston tube; 43, fixing part; 44, clamping part; 441, piston rod; 442, splint; 443, telescopic rod; 444, rubber arc splint; 445, spring. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] In order to further understand the content of the present invention, the present invention is described in detail in conjunction with the accompanying drawings.

[0030] Combination Figure 1-2 , Figure 6A single-jaw grounding resistance test device comprises a tester body 1, a driving mechanism 2 is arranged inside the tester body 1, an arc-shaped clamp 3 is arranged at one end of the tester body 1, a clamping assembly 4 is arranged at the lower end of the tester body 1, the tester body 1 comprises a shell 11, a transmission mechanism 12 is arranged inside the shell 11, the transmission mechanism 12 is meshed and connected with the driving mechanism 2, the arc-shaped clamp 3 is threadedly movably connected with the transmission mechanism 12, the clamping assembly 4 comprises a gas pipe 41, one end of the gas pipe 41 is fixedly connected and communicated with the shell 11, a piston pipe 42 is fixedly installed at the other end of the gas pipe 41, and clamps 44 are slidably installed at both ends of the inner side of the piston pipe 42, and the driving mechanism 2 is pulled horizontally by fingers, and during the process, the transmission mechanism 12 is meshed and connected with the driving mechanism 2, thereby driving the transmission mechanism 12 to achieve a transmission effect, and driving the arc-shaped clamp 3 to move horizontally, the driving mechanism 2 and the arc-shaped clamp 3 are meshed and connected. The horizontal movement between the two is in a vertical cross direction. At this time, the driving mechanism 2 and the arc-shaped clamp 3 move away from each other, and the arc-shaped clamp 3 squeezes the gas inside the shell 11 into the gas tube 41 during the horizontal movement, and finally enters the piston tube 42, so that the two groups of clamps 44 are displaced to both sides with the piston tube 42 as the center, and the device can be moved as a whole to the periphery of the object of resistance to be measured to wrap it, and then the finger releases the driving mechanism 2 to reset it back to the initial state. During the resetting process of the driving mechanism 2, the transmission mechanism 12 is driven to transmit in the opposite direction to the previous direction, and the arc-shaped clamp 3 is driven back to the initial state. In this process, the gas in the piston tube 42 is re-sucked back into the shell 11 through the gas tube 41, so that the two groups of clamps 44 move toward the center of the piston tube 42 at the same time, completing the clamping of the object to be tested, thereby preventing the object from contacting the inner wall of the clamp due to the shaking of the hand, thereby affecting the test results.

[0031] Combination Figure 3 , Figure 7 The shell 11 includes a rectangular plate 111, and a rectangular groove 1111 and a circular groove 1112 are provided inside the rectangular plate 111. The rectangular groove 1111 is communicated with the circular groove 1112. The driving mechanism 2 includes a straight clamp 21, and the straight clamp 21 matches the rectangular groove 1111 and is slidably connected. A pull rod 23 is fixedly installed at one end of the straight clamp 21. The pull rod 23 is installed through the interior of the rectangular plate 111 and is slidably connected. A limit plate 25 is fixedly installed at one end of the pull rod 23 away from the straight clamp 21. A finger groove 26 is provided on one side of the limit plate 25. When in use, first put your finger in the finger groove 26 and then pull it to drive the limit plate 25 and the pull rod 23, so that the straight clamp 21 retreats to the rectangular groove 1111, which is convenient for subsequent detection operations.

[0032] Combination Figure 3 , Figure 7-8A plurality of tooth grooves 24 are arranged at the upper end of the pull rod 23, a plurality of transmission grooves 1115 are arranged inside the rectangular plate 111, a plurality of fixing rings 1116 are fixedly installed on the surface of the transmission groove 1115, the clamping assembly 4 includes a transmission rod 121, a gear 122 is fixedly installed at one end of the transmission rod 121, the gear 122 is meshedly connected with the tooth groove 24, a bevel gear 123 is fixedly installed at the other end of the transmission rod 121, a transmission rod 2 124 is meshedly connected on one side of the bevel gear 123, bevel gears 123 are fixedly installed at both ends of the transmission rod 2 124, and a reciprocating screw rod 125 is meshedly connected at one end of the transmission rod 2 124 away from the transmission rod 121, and the reciprocating screw rod 125 is meshedly connected to the reciprocating screw rod 125. A bevel gear 123 is fixedly installed at one end of the screw rod 125 close to the transmission rod 2 124, and the arc-shaped pliers 3 include a U-shaped clamp 31. A driven plate 32 is fixedly installed on one side of the U-shaped clamp 31. The driven plate 32 is threadedly movably connected to the reciprocating screw rod 125. Because the gear 122 is meshed with the tooth groove 24, the pull rod 23 drives the transmission rod 121 to rotate during the movement, and the transmission rod 121 drives the transmission rod 2 124 to rotate, and the transmission rod 2 124 drives the reciprocating screw rod 125 to rotate, thereby driving the driven plate 32 to drive the U-shaped clamp 31 to reciprocate, thereby realizing the simultaneous operation of the straight clamp 21 and the U-shaped clamp 31, making it faster during use.

[0033] Combination Figure 3 , Figure 5 A slide groove 1117 is provided inside the rectangular plate 111, and a baffle 1118 is fixedly installed at one end of the slide groove 1117. The reciprocating screw rod 125 is installed inside the baffle 1118 and is rotatably connected. An air hole 1119 is provided inside the rectangular plate 111, and one end of the air hole 1119 is connected to the slide groove 1117, and the other end of the air hole 1119 is fixedly connected to and connected with the gas pipe 41. Both sides of the driven plate 32 are fixedly installed with telescopic plates 33, and the telescopic plates 33 are fixedly installed. The end away from the driven plate 32 is fixedly connected to the rectangular plate 111, and the driven plate 32 matches and slides with the slide groove 1117. The baffle 1118 and the telescopic plate 33 are arranged to make the slide groove 1117 in a closed state in the rectangular plate 111, so that when the driven plate 32 moves in the slide groove 1117, the gas enters the piston tube 42 and moves away from the piston tube 42 through the air hole 1119, thereby achieving the clamping effect of the clamping member 44.

[0034] Combination Figure 6There are two groups of clamping members 44, and their structural composition and functions are exactly the same. The clamping member 44 includes a piston rod 441, which is located inside the piston tube 42 and slidably connected. A clamping plate 442 is fixedly installed on the end of the piston rod 441 away from the piston tube 42, and a telescopic rod 443 is fixedly installed on the side where the two groups of clamps 442 are close to each other. A rubber arc clamping plate 444 is fixedly installed on the end of the telescopic rod 443 away from the clamping plate 442. The clamping plate 442 and the rubber arc clamping plate 444 are moved by the piston rod 441 to achieve clamping of the object to be tested, thereby preventing the object from contacting the inner wall of the clamp due to the shaking of the hand, thereby affecting the test result.

[0035] Combination Figure 6 A spring 445 is arranged on the outside of the telescopic rod 443, one end of the spring 445 is fixedly connected to the clamping plate 442, and the other end of the spring 445 is fixedly connected to the rubber arc clamping plate 444. Through the arrangement of the spring 445, the clamping effect of objects to be detected with different diameters can be met, which greatly increases its practicality. The arrangement of the telescopic rod 443 enhances the stability of the spring 445 during the deformation process.

[0036] Combination Figure 7 A buffer pad 22 is fixedly installed at one end of the straight clamp 21 close to the pull rod 23. During the pulling process, the finger pulling force is too large, which may cause a large impact force between the straight clamp 21 and the rectangular plate 111, thereby causing damage to the magnet inside the straight clamp 21. The setting of the buffer pad 22 can effectively reduce the impact force, form a buffering effect, and thus extend its service life.

[0037] Combination Figure 3 A fixed ring plate 1113 is fixedly installed on the surface of the circular groove 1112, and a reset spring 1114 is fixedly installed on one end of the fixed ring plate 1113. The end of the reset spring 1114 away from the fixed ring plate 1113 is fixedly connected to the buffer pad 22. When the finger pulls the pull rod 23, the reset spring 1114 will be compressed, but when the finger is released, the reset spring 1114 will reset and drive the straight clamp 21 and the pull rod 23 back to the initial state, thereby realizing automatic reset and driving the realization of subsequent effects.

[0038] Combination Figure 3 , Figure 6-7A slider 27 is fixedly installed on one side of the limit plate 25, a handle 112 is fixedly installed on the outer side of the rectangular plate 111, and a second slide groove 1121 is opened on the outer surface of the handle 112. The slider 27 matches the second slide groove 1121 and is slidably connected. A fixing member 43 is fixedly installed on one side of the piston tube 42, and the fixing member 43 is fixedly connected to the rectangular plate 111. The slider 27 matches the second slide groove 1121 and is slidably connected, which greatly improves the stability of the driving mechanism 2 during the pulling process, and effectively prevents the pull rod 23 from rotating, thereby ensuring the normal engagement of the gear 122 with the tooth groove 24. The setting of the fixing member 43 greatly improves the overall structural strength of the clamping assembly 4.

[0039] Combination Figure 4 A display screen 113 and a knob 114 are fixedly mounted on the upper end of the rectangular plate 111. The display screen 113 is provided to directly display the detection data, which is convenient for users to read on site, while the knob 114 is provided to facilitate quick use by operators.

[0040] It should be noted that, in the description of the present application, it should be understood that the terms "length", "thickness", "inside", "outside", "axial", "radial", etc., indicating orientations or positional relationships are based on the orientations 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 device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0041] In addition, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprises", or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article, or apparatus.

[0042] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A single-jaw ground resistance test device, comprising a tester body (1), a driving mechanism (2) is arranged inside the tester body (1), an arc-shaped clamp (3) is arranged at one end of the tester body (1), and a clamping assembly (4) is arranged at the lower end of the tester body (1), characterized in that: The tester body (1) comprises a shell (11), a transmission mechanism (12) is arranged inside the shell (11), the transmission mechanism (12) is meshedly connected with the driving mechanism (2), the arc-shaped clamp (3) is threadedly movably connected with the transmission mechanism (12), and the clamping assembly (4) comprises a gas pipe (41), one end of the gas pipe (41) is fixedly connected and communicated with the shell (11), and a piston pipe (42) is fixedly installed on the other end of the gas pipe (41), and clamping members (44) are slidably installed on both ends of the inner side of the piston pipe (42).

2. A single-jaw ground resistance tester according to claim 1, characterized in that: The housing (11) comprises a rectangular plate (111), a rectangular groove (1111) and a circular groove (1112) are provided inside the rectangular plate (111), the rectangular groove (1111) and the circular groove (1112) are communicated with each other, the driving mechanism (2) comprises a straight clamp (21), the straight clamp (21) matches the rectangular groove (1111) and is slidably connected to each other, a pull rod (23) is fixedly installed at one end of the straight clamp (21), the pull rod (23) is installed through the interior of the rectangular plate (111) and is slidably connected to each other, a limiting plate (25) is fixedly installed at one end of the pull rod (23) away from the straight clamp (21), and a finger groove (26) is provided on one side of the limiting plate (25).

3. A single-jaw ground resistance tester according to claim 2, characterized in that: The upper end of the pull rod (23) is provided with a plurality of tooth grooves (24), the interior of the rectangular plate (111) is provided with a plurality of transmission grooves (1115), the surface of the transmission grooves (1115) is fixedly mounted with a plurality of fixing rings (1116), the clamping assembly (4) comprises a transmission rod (121), one end of the transmission rod (121) is fixedly mounted with a gear (122), the gear (122) is meshingly connected with the tooth grooves (24), the other end of the transmission rod (121) is fixedly mounted with a bevel gear (123), one side of the bevel gear (123) is meshingly connected with the tooth grooves (24), The arc-shaped clamp (3) is connected with a transmission rod 2 (124), both ends of which are fixedly mounted with bevel gears (123), one end of the transmission rod 2 (124) away from the transmission rod 1 (121) is meshingly connected with a reciprocating screw rod (125), and one end of the reciprocating screw rod (125) close to the transmission rod 2 (124) is fixedly mounted with a bevel gear (123), and the arc-shaped clamp (3) comprises a U-shaped clamp (31), one side of the U-shaped clamp (31) is fixedly mounted with a driven plate (32), and the driven plate (32) is threadedly movably connected with the reciprocating screw rod (125).

4. A single-jaw ground resistance tester according to claim 2, characterized in that: The rectangular plate (111) is provided with a slide groove (1117) inside, a baffle (1118) is fixedly installed at one end of the slide groove (1117), a reciprocating screw rod (125) is installed through the baffle (1118) and is rotatably connected, an air hole (1119) is provided inside the rectangular plate (111), one end of the air hole (1119) is connected to the slide groove (1117), and the other end of the air hole (1119) is fixedly connected to and connected with the gas pipe (41), and telescopic plates (33) are fixedly installed on both sides of the driven plate (32), and one end of the telescopic plate (33) away from the driven plate (32) is fixedly connected to the rectangular plate (111), and the driven plate (32) matches the slide groove (1117) and is slidably connected.

5. The single-jaw ground resistance tester according to claim 1, characterized in that: The clamping member (44) is provided with two groups, and the structural composition and function are completely the same. The clamping member (44) includes a piston rod (441), the piston rod (441) is located inside the piston tube (42) and is slidably connected, a clamping plate (442) is fixedly installed at one end of the piston rod (441) away from the piston tube (42), a telescopic rod (443) is fixedly installed on the side where the two groups of clamping plates (442) are close to each other, and a rubber arc clamping plate (444) is fixedly installed at one end of the telescopic rod (443) away from the clamping plate (442).

6. A single-jaw ground resistance tester according to claim 5, characterized in that: A spring (445) is arranged on the outer side of the telescopic rod (443); one end of the spring (445) is fixedly connected to the clamping plate (442); and the other end of the spring (445) is fixedly connected to the rubber arc clamping plate (444).

7. A single-jaw ground resistance tester according to claim 2, characterized in that: A buffer pad (22) is fixedly mounted on one end of the straight clamp (21) close to the pull rod (23).

8. The single-jaw ground resistance tester according to claim 2, characterized in that: A fixed ring plate (1113) is fixedly mounted on the surface of the circular groove (1112), a return spring (1114) is fixedly mounted on one end of the fixed ring plate (1113), and one end of the return spring (1114) away from the fixed ring plate (1113) is fixedly connected to the buffer pad (22).

9. A single-jaw ground resistance tester according to claim 2, characterized in that: A slider (27) is fixedly mounted on one side of the limit plate (25); a handle (112) is fixedly mounted on the outer side of the rectangular plate (111); a second slide groove (1121) is provided on the outer surface of the handle (112); the slider (27) matches and is slidably connected to the second slide groove (1121); a fixing member (43) is fixedly mounted on one side of the piston tube (42); and the fixing member (43) is fixedly connected to the rectangular plate (111).

10. The single-jaw ground resistance tester according to claim 2, characterized in that: A display screen (113) and a knob (114) are fixedly mounted on the upper end of the rectangular plate (111).

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