Cable measurement bridge clamp

Abstract

The utility model relates to the technical field of bridge clamps, and discloses a cable measuring bridge clamp, which comprises a support, a wiring auxiliary tool, current clamps and voltage clamps, side plates are integrally formed on two sides of the support respectively, and the two groups of current clamps and the two groups of voltage clamps respectively comprise a stand column; in the current clamp and the voltage clamp, the column drives the connecting rod to lift through the telescopic end of the cylinder, so that the poke rod can swing at the top of the supporting rod, and the first connecting rod and the second connecting rod respectively drive the first clamping plate and the second clamping plate to rotate in the same direction at the top end of the column. The connecting rod on one side can drive the poke rod on the same side at the same time, so that the chucks on the two sides of the stand column can be synchronously driven and closed, the laid cable is clamped by the two groups of symmetrical current clamps and voltage clamps at the same time, the clamping preparation procedure before cable measurement is simple and convenient, and the overall efficiency of cable resistance measurement is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge jigs, in particular to a cable measurement bridge jig. Background Technique

[0002] When measuring a segmented conductor with a bridge, a four-terminal wiring method is adopted, that is, two groups of current jigs are clamped at both ends of the segmented conductor, and two groups of voltage jigs are clamped on the segmented conductor between the two groups of current jigs. The distance between the two groups of voltage jigs is one meter. A constant current is applied to the segmented conductor through the current jigs, and the voltage value of one-meter segmented conductor is collected through the voltage jigs to calculate the unit resistance of the segmented conductor.

[0003] For example, the Chinese patent authorization announcement number is CN219245622U, "A bridge jig for measuring the resistance value of a wire, including an operating table, a wiring auxiliary tool, a current jig, and a voltage jig. The wiring auxiliary tool, the current jig, and the voltage jig are symmetrically arranged on both sides of the top of the operating table respectively";

[0004] In the above comparative document, when the lead screw rotates in the inner wall of the adjustment groove, the current jig and the voltage jig at both ends of the inner wall of the adjustment groove can slide closer or separate in the inner wall of the adjustment groove under the cooperation of the internal thread holes, thereby adjusting the distance between the current jig and the voltage jig. At the same time, the wiring auxiliary tool slides in the adjustment groove through the through hole and is positioned by the positioning rod, so that the distance between the two groups of wiring auxiliary tools, current jigs, and voltage jigs in the bridge jig can be flexibly adjusted, and the resistance value of segmented conductors of different lengths can be measured;

[0005] However, the above bridge jig has the following defects in actual use. When the two groups of voltage jigs and current jigs in the bridge jig clamp the cable, it is necessary to adjust the chuck of each jig one by one to clamp the cable in segments and install it on the two groups of voltage jigs and current jigs. In this way, the clamping and positioning operation of the cable is cumbersome, seriously affecting the measurement efficiency. Content of the Utility Model

[0006] The purpose of the utility model is to provide a cable measurement bridge jig. This kind of cable measurement bridge jig can realize the simultaneous clamping of two groups of symmetric current and voltage jigs on the laid cable, making the clamping preparation process before cable measurement simple and improving the overall measurement efficiency.

[0007] To achieve the above object, the utility model provides the following technical solutions: A cable measuring bridge clamp, comprising a support, a wiring accessory, a current clamp, and a voltage clamp. Side plates are integrally formed on both sides of the support. Two groups of current clamps and two groups of voltage clamps each include a column, and multiple columns are respectively installed in the top chute of the support. Connecting plates are fixedly installed on both sides of the bottom of the current clamp and the voltage clamp. First clamping plates and second clamping plates are respectively rotatably installed on both sides of the top of the column. Clamping heads are integrally formed in the middle of the adjacent surfaces of the first clamping plate and the second clamping plate. First connecting rods and second connecting rods are respectively hinged to the ends of the first clamping plate and the second clamping plate away from the column. A support rod is fixedly installed on the top of each connecting plate, and a toggle rod is rotatably installed at the top of the support rod. A cylinder and a connecting rod are respectively installed in the middle of the side plate.

[0008] Preferably, an opening groove is penetrated and opened near the side plate on one side of the support, and the connecting plate on one side movably penetrates through the opening groove and extends to the top of the side plate.

[0009] Preferably, the bottom ends of the first connecting rod and the second connecting rod on one side are respectively hinged to the side surface of the same toggle rod.

[0010] Preferably, the bottom ends of each first connecting rod and each second connecting rod are respectively located on both sides of the support rod.

[0011] Preferably, one end of the toggle rod on the same side is movably sleeved on the outside of the connecting rod.

[0012] Preferably, the cylinder is fixedly installed in the middle of the top surface of the side plate, and the telescopic end of the cylinder is installed by hinging with the connecting rod.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0014] In the utility model, the columns in the current clamp and the voltage clamp are lifted by the telescopic end of the cylinder driving the connecting rod, so that the toggle rod can swing on the top of the support rod. Furthermore, the first connecting rod and the second connecting rod respectively drive the first clamping plate and the second clamping plate to rotate in the same direction at the top of the column. And the connecting rod on one side can simultaneously drive the toggle rod on the same side. In this way, the clamping heads on both sides of the column can be synchronously driven to close, realizing the simultaneous clamping of two groups of symmetric current clamps and voltage clamps on the laid cable. It makes the clamping preparation process before cable measurement simple, improves the overall efficiency of cable resistance measurement, and solves the problem that the existing cable bridge clamp needs to adjust the clamping head of each clamp one by one to clamp the cable in sections and install it on two groups of voltage clamps and current clamps. In this way, the operation of clamping and positioning the cable is cumbersome, seriously affecting the measurement efficiency. Description of the Drawings

[0015] Figure 1Schematic diagram of the three-dimensional structure of the present utility model;

[0016] Figure 2 Schematic diagram of the side sectional structure of the present utility model;

[0017] Figure 3 Schematic diagram of the structure of the middle column and the chuck of the present utility model;

[0018] Figure 4 is Figure 3 Schematic diagram of the partial enlarged structure at position A in the middle.

[0019] In the figure: 1, support; 2, wiring accessory; 3, current clamp; 4, voltage clamp; 5, cylinder; 6, connecting rod; 7, column; 11, side plate; 12, connecting plate; 70, chuck; 71, first clamping plate; 72, second clamping plate; 73, first connecting rod; 74, second connecting rod; 75, toggle rod; 76, support rod. Detailed implementation manners

[0020] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. The described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments.

[0021] Please refer to Figures 1-4 , the present utility model provides a technical solution: a cable measurement bridge clamp, including a support 1, a wiring accessory 2, a current clamp 3, and a voltage clamp 4. Side plates 11 are integrally formed on both sides of the support 1. Two groups of current clamps 3 and two groups of voltage clamps 4 each include a column 7, and multiple columns 7 are respectively installed in the top sliding grooves of the support 1;

[0022] On both sides of the bottom of the current clamp 3 and the voltage clamp 4, connecting plates 12 are fixedly installed respectively. On both sides of the top of the column 7, a first clamping plate 71 and a second clamping plate 72 are rotatably installed respectively. In the middle of the adjacent surfaces of the first clamping plate 71 and the second clamping plate 72, a chuck 70 is integrally formed. At one end of the first clamping plate 71 and the second clamping plate 72 away from the column 7, a first connecting rod 73 and a second connecting rod 74 are respectively hinged. On the top of each connecting plate 12, a support rod 76 is fixedly installed respectively. At the top of the support rod 76, a toggle rod 75 is rotatably installed. In the middle of the side plates 11, a cylinder 5 and a connecting rod 6 are respectively installed;

[0023] The columns 7 in the two groups of current clamps 3 and the two groups of voltage clamps 4 are respectively slidably installed in the top sliding grooves of the support 1. A lead screw is rotatably installed on one side of the sliding groove. The lead screw is driven to rotate by a motor at the end of the support 1, so that the two groups of current clamps 3 and the two groups of voltage clamps 4 can be finely adjusted in distance along the sliding groove, realizing the measurement of the resistance of cables with different lengths. For the fine adjustment of the distance between the current clamp 3 and the voltage clamp 4 to measure cables with different lengths, it is a prior art solution and will not be elaborated here;

[0024] In the current clamp 3 and the voltage clamp 4, the vertical column 7 drives the connecting rod 6 to move up and down through the telescopic end of the air cylinder 5, so that the toggle lever 75 can swing on the top of the support rod 76. Furthermore, the first connecting rod 73 and the second connecting rod 74 drive the first clamping plate 71 and the second clamping plate 72 to rotate in the same direction at the top of the vertical column 7 respectively. And the connecting rod 6 on one side can drive the toggle lever 75 on the same side at the same time. In this way, the chucks 70 on both sides of the vertical column 7 can be synchronously driven to close, realizing the simultaneous clamping of two groups of symmetrical current clamps 3 and voltage clamps 4 on the laid cable, making the clamping preparation process before cable measurement simple and improving the overall efficiency of cable resistance measurement.

[0025] Wherein, an opening groove is penetrated and provided on one side of the support 1 near the side plate 11. The connecting plate 12 on one side extends through the opening groove and extends to the top of the side plate 11. The connecting plates 12 connected to both sides of the bottom end of each vertical column 7 can extend from the opening groove and can slide synchronously with the vertical column 7 in the top chute of the support 1.

[0026] Wherein, the bottom ends of the first connecting rod 73 and the second connecting rod 74 on one side are respectively hinged to the side surface of the same toggle lever 75. The bottom ends of each group of the first connecting rod 73 and the second connecting rod 74 are respectively located on both sides of the support rod 76. One end of the toggle lever 75 on the same side is movably sleeved outside the connecting rod 6. The air cylinder 5 is fixedly installed at the middle part of the top surface of the side plate 11. The telescopic end of the air cylinder 5 and the connecting rod 6 are installed by hinge. The telescopic end of the air cylinder 5 drives the connecting rod 6 to move up and down, so that the toggle lever 75 can swing on the top of the support rod 76. Furthermore, the first connecting rod 73 and the second connecting rod 74 drive the first clamping plate 71 and the second clamping plate 72 to rotate in the same direction at the top of the vertical column 7 respectively. And the connecting rod 6 on one side can drive the toggle lever 75 on the same side at the same time. In this way, the chucks 70 on both sides of the vertical column 7 can be synchronously driven to close, realizing the simultaneous clamping of two groups of symmetrical current and voltage clamps 4 on the laid cable.

[0027] Working principle: When in use, first drive the screw rod in the top chute of the support 1 to rotate through the motor on one side of the support 1, so that the symmetrical current clamps 3 and voltage clamps 4 on both sides of the top of the support 1 respectively fine-tune the distance along the chute, so as to clamp and measure the resistance of cables with different lengths;

[0028] Then, the telescopic end of the air cylinder 5 can drive the connecting rod 6 to move up and down, so that the toggle lever 75 can swing on the top of the support rod 76. Furthermore, the first connecting rod 73 and the second connecting rod 74 drive the first clamping plate 71 and the second clamping plate 72 to rotate in the same direction at the top of the vertical column 7 respectively. And the connecting rod 6 on one side can drive the toggle lever 75 on the same side at the same time. In this way, the chucks 70 on both sides of the vertical column 7 can be synchronously driven to close, realizing the simultaneous clamping of two groups of symmetrical current clamps 3 and voltage clamps 4 on the laid cable;

[0029] Finally, use a 4-square-meter soft copper wire to firmly connect the terminal of the wiring accessory 2 and the wiring end of the current clamp 3 together; connect the current wiring terminal of the bridge to the two wire posts of the current clamp 3, and connect the voltage wiring terminal of the bridge to the two wire posts of the voltage clamp 4 to realize the test of the DC resistance of the divided conductor.

[0030] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes and modifications can be made to these embodiments without departing from the principle of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A cable measurement bridge fixture, comprising a support (1), a wiring auxiliary tool (2), a current fixture (3), and a voltage fixture (4), characterized in that: The support (1) has side plates (11) formed integrally on both sides, the two groups of current clamps (3) and the two groups of voltage clamps (4) each include a column (7), and the plurality of groups of columns (7) are respectively installed in the top slide groove of the support (1), and the current clamps (3) and the voltage clamps (4) are respectively fixedly installed with connecting plates (12) on both sides of the bottom, and the top of the column (7) is respectively rotatably installed with a first clamping plate (71) and a second clamping plate (72), and the first clamping plate A clamp (70) is integrally formed in the middle of the adjacent surface of the second clamp (71) and the second clamp (72); the first clamp (71) and the second clamp (72) are respectively hinged with a first connecting rod (73) and a second connecting rod (74) at one end away from the column (7); a support rod (76) is fixedly installed on the top of each group of the connecting plates (12); a toggle rod (75) is rotatably installed on the top of the support rod (76); and a cylinder (5) and a connecting rod (6) are respectively installed in the middle of the side plate (11).

2. A cable measuring bridge fixture according to claim 1, characterized in that: An open slot is provided through one side of the support (1) near the side plate (11), and the connecting plate (12) located on one side movably passes through the open slot and extends to the top of the side plate (11).

3. A cable measuring bridge fixture according to claim 1, characterized in that: The bottom ends of the first connecting rod (73) and the second connecting rod (74) located on one side are respectively hinged on the side surface of the same toggle rod (75).

4. A cable measuring bridge fixture according to claim 1, characterized in that: The bottom ends of each set of the first connecting rod (73) and the second connecting rod (74) are respectively located on both sides of the support rod (76).

5. The cable measuring bridge fixture according to claim 1, characterized in that: One end of the toggle rod (75) located on the same side is movably sleeved on the outside of the connecting rod (6).

6. A cable measurement bridge fixture according to claim 1, characterized in that: The cylinder (5) is fixedly mounted at the middle of the top surface of the side plate (11), and the telescopic end of the cylinder (5) is hingedly mounted to the connecting rod (6).

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