Puncture electricity taking clamp device

Abstract

The utility model discloses a puncture electricity taking clamp device which comprises a functional body and a positioning mechanism, the positioning mechanism is detachably installed on one side of the functional body, and a locking structure is arranged between the bottom of the positioning mechanism and the bottom of the functional body and used for locking and fixing the bottom of the positioning mechanism and the functional body. The positioning mechanism comprises a seat body and a clamping block, wire clamping grooves are formed in the opposite sides of the seat body and the clamping block, and a distance adjusting structure is arranged between the clamping block and the seat body. By rotating the second knob, the threaded rod is driven to rotate in the threaded sleeve, the threaded sleeve is driven to move transversely, the threaded sleeve drives the puncture needle to move synchronously and transversely, the operation that the puncture needle penetrates into a cable sheath is achieved, voltage is directly output through the puncture needle and the electric wire for measurement, danger caused by hot-line work is avoided, and safety is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of current transformers, in particular to a puncture power-taking clamp device. Background Technique

[0002] The working principle of a current transformer is electromagnetic induction, which generally consists of a closed iron core and windings. The main function of a current transformer is to proportionally transform a large current into a standard small current to achieve the standardization and miniaturization of measuring instruments, protection devices, and automatic control devices. Currently, current transformers mainly include a functional main body and a positioning mechanism for puncturing and taking power on a cable line. However, during the application of existing current transformers on low-voltage lines, there are problems such as troublesome low-voltage stable power taking, which easily leads to risks brought by live working and potential safety hazards. Moreover, the puncture needle for taking power is exposed outside and is easily contaminated by dust, water vapor, etc. in the external environment, affecting the measurement results. Therefore, it is necessary to design a puncture power-taking clamp device to improve the above problems. Content of the Utility Model

[0003] Aiming at the deficiencies of the prior art, the purpose of the utility model is to provide a puncture power-taking clamp device, aiming to solve the problems in the prior art such as troublesome low-voltage stable power taking, which easily leads to risks brought by live working, the puncture needle being exposed outside and being easily contaminated by dust, water vapor, etc. in the external environment, affecting the measurement results.

[0004] To achieve the above purpose, the utility model provides the following technical solutions:

[0005] A puncture power-taking clamp device includes a functional main body and a positioning mechanism. The positioning mechanism is detachably installed on one side of the functional main body. A locking structure is provided between the bottom of the positioning mechanism and the bottom of the functional main body to lock and fix the bottom of the positioning mechanism to the functional main body.

[0006] The positioning mechanism includes a seat body and a clamping block. Clamping grooves are provided on the opposite sides of the seat body and the clamping block. A distance adjustment structure is provided between the clamping block and the seat body. A puncture power-taking structure is arranged inside the seat body. The puncture power-taking structure includes a puncture needle and a lateral adjustment component. A through hole communicating with its clamping groove is opened inside the seat body. The lateral adjustment component is used to laterally adjust the position of the puncture needle, pass the puncture needle through the through hole and penetrate into the cable sheath.

[0007] Preferably, the lateral adjustment assembly includes a threaded rod rotatably connected to the inside of the seat body. One end of the threaded rod extends to the outside of the seat body and is fixedly connected to a second knob. A threaded sleeve is threadedly sleeved on the outside of the threaded rod. A fixed sleeve is slidably sleeved on the outside of the threaded sleeve. The fixed sleeve is fixedly connected to the inside of the seat body. A limiting block is provided on the inner wall of the fixed sleeve. A limiting groove is opened along the length direction on the outer wall of the threaded sleeve. The limiting block is placed in the limiting groove. A wire is connected to the puncture needle. One end of the wire passes through the seat body and extends to the outside.

[0008] Preferably, an isolation block is fixedly connected between one end of the threaded sleeve and the puncture needle.

[0009] Preferably, the spacing adjustment structure includes an adjustment screw rod. A sliding groove is opened at the bottom end inside the seat body. The adjustment screw rod is rotatably connected in the sliding groove. One end of the clamping block is slidably installed in the sliding groove and is threadedly connected to the adjustment screw rod. One end of the adjustment screw rod extends to the outside of the seat body and is fixedly connected to a first knob.

[0010] Preferably, a sealing sleeve is installed inside the through hole and outside the puncture needle. The sealing sleeve includes a collar fixedly connected to the inside of the through hole. One end of the collar is provided with a sealing ring placed in the wire clamping groove of the seat body.

[0011] Preferably, an installation groove is annularly opened at one end of the collar. The other end of the sealing ring is provided with an installation ring. The installation ring is snapped into the installation groove. Snap ring grooves are opened on the inner and outer side walls of the installation groove. Snap ring rings that are snapped into the snap ring grooves are provided on the inner and outer side walls of the installation ring.

[0012] Preferably, a clamping block is fixedly connected to the outer side wall of the seat body. A clamping groove adapted to the clamping block is opened on the outer side wall of the functional body. The positioning mechanism and the functional body are snap - installed through the clamping block and the clamping groove.

[0013] Preferably, the locking structure includes a housing fixedly connected to the bottom of the functional body and a fixed block fixedly connected to the bottom of the seat body. The housing and the fixed block are in corresponding positions. A receiving cavity with an opening facing the fixed block is opened inside the housing. An insertion block is slidably installed in the receiving cavity. A return spring is fixedly connected between one end of the insertion block and the inner wall of the receiving cavity. A slot for the insertion block to insert is opened on the fixed block.

[0014] Preferably, a moving groove communicating with the receiving cavity is opened at the bottom of the fixed block. A dial plate passing through the moving groove is fixedly connected to the bottom of the insertion block.

[0015] Preferably, guiding grooves communicating the wire clamping groove and the slot are opened on the side walls of the fixed block and the seat body. The cross - section of the insertion block is a trapezoidal structure. An inclined opening adapted to the inclined surface of the trapezoidal structure for sliding is provided at the top of the guiding groove.

[0016] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0017] (1) Through the provided puncture power-taking structure of the present utility model, after the functional body and the positioning mechanism are installed on the cable, by rotating the second knob, the threaded rod rotates in the threaded sleeve, driving the threaded sleeve to move horizontally. The threaded sleeve drives the puncture needle to move horizontally synchronously, realizing the operation of piercing the cable sheath with the puncture needle. The voltage is directly output through the puncture needle and the wire for measurement, avoiding the danger brought by live working and improving safety.

[0018] (2) In the present utility model, through the provided sealing sleeve, when the seat body and the clamping block are clamped and fixed on the cable, the collar presses the sealing ring tightly against the outer skin of the cable, used to isolate the puncture needle from the external environment, preventing dust, water vapor, etc. in the external environment from polluting the puncture needle and affecting the measurement result.

[0019] (3) In the present utility model, through the provided locking structure, it is convenient for the quick disassembly and assembly of the positioning mechanism and the functional body. When the functional body or the positioning mechanism is damaged, it can be disassembled and replaced, which is beneficial for maintenance. Moreover, a functional body with a suitable size and specification can be selected to be adapted to the positioning mechanism for use, suitable for fixing the positioning mechanism on cables of different sizes, with high applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic three-dimensional structure diagram of the whole puncture power-taking clamp device Figure I ;

[0021] Figure 2 is a schematic three-dimensional structure diagram of the whole puncture power-taking clamp device Figure II ;

[0022] Figure 3 is a schematic diagram of the internal structure of the seat body;

[0023] Figure 4 is a schematic diagram of the disassembled structure of the functional body and the positioning mechanism;

[0024] Figure 5 is a schematic cross-sectional structure diagram of the locking structure;

[0025] Figure 6 is a schematic diagram of the puncture power-taking structure;

[0026] Figure 7 is a schematic cross-sectional structure diagram of the sealing sleeve.

[0027] In the figure: 1. Functional main body; 11. Clamping groove; 2. Positioning mechanism; 21. Base body; 22. Clamping block; 23. Adjusting screw; 24. First knob; 25. Clamping block; 3. Locking structure; 31. Housing; 311. Insert block; 312. Dial plate; 313. Return spring; 32. Fixed block; 321. Slot; 4. Piercing power-taking structure; 41. Second knob; 42. Threaded rod; 43. Fixed sleeve; 44. Threaded sleeve; 45. Isolation block; 46. Piercing needle; 47. Electric wire; 5. Sealing sleeve; 51. Collar; 511. Installation groove; 52. Sealing ring; 521. Installation ring. Detailed implementation manner

[0028] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0029] Embodiment:

[0030] Please refer to Figures 1-7 , this embodiment provides a piercing power-taking clamp device, including a functional main body 1 and a positioning mechanism 2. The functional main body 1 includes an upper wire clamping sleeve and a lower wire clamping sleeve, which are used for clamping and fixing on a cable. This is the prior art and will not be elaborated here. The positioning mechanism 2 includes a base body 21 and a clamping block 22. Clamping grooves are provided on the opposite sides of the base body 21 and the clamping block 22. A spacing adjustment structure is provided between the clamping block 22 and the base body 21. A piercing power-taking structure 4 is arranged inside the base body 21. The spacing adjustment structure includes an adjusting screw 23. A sliding groove is provided at the inner bottom end of the base body 21. The adjusting screw 23 is rotatably connected in the sliding groove. One end of the clamping block 22 is slidably installed in the sliding groove and is threadedly connected to the adjusting screw 23. One end of the adjusting screw 23 extends to the outside of the base body 21 and is fixedly connected to a first knob 24. When the functional main body 1 is fixed on the cable, by rotating the first knob 24 to drive the adjusting screw 23 to rotate, the position of the clamping block 22 can be adjusted, and the cable is clamped and fixed in the clamping grooves of the base body 21 and the clamping block 22. Then, the piercing power-taking structure 4 penetrates through the cable sheath, directly outputs the voltage, and performs measurement, avoiding the danger brought by live operation.

[0031] In this embodiment, the puncture power-taking structure 4 includes a puncture needle 46 and a lateral adjustment assembly. A through hole communicating with its wire clamping groove is formed inside the seat body 21. The lateral adjustment assembly is used to laterally adjust the position of the puncture needle 46. The puncture needle 46 is passed through the through hole and into the cable sheath. The lateral adjustment assembly includes a threaded rod 42 rotatably connected inside the seat body 21. One end of the threaded rod 42 extends outside the seat body 21 and is fixedly connected with a second knob 41. A threaded sleeve 44 is threadedly sleeved on the outer side of the threaded rod 42. A fixed sleeve 43 is slidably sleeved on the outer side of the threaded sleeve 44. The fixed sleeve 43 is fixedly connected inside the seat body 21. A limiting block is provided on the inner wall of the fixed sleeve 43. A limiting groove is formed along the length direction on the outer wall of the threaded sleeve 44. The limiting block is placed in the limiting groove. A wire 47 is connected to the puncture needle 46. One end of the wire 47 passes through the seat body 21 and extends outward. The wire 47 has enough length reserved inside the seat body 21 to adapt to the movement of the puncture needle 46. A separating block 45 is fixedly connected between one end of the threaded sleeve 44 and the puncture needle 46. The separating block 45 is made of insulating materials such as ceramics, insulating rubber, plexiglass, etc., which can ensure the electrical isolation between the puncture needle 46 and the threaded sleeve 44.

[0032] Specifically, during use, by rotating the second knob 41 to drive the threaded rod 42 to rotate inside the threaded sleeve 44, and the threaded sleeve 44 and the fixed sleeve 43 are limited and slide through the limiting block and the limiting groove, so that the threaded sleeve 44 is radially limited and does not rotate, thereby driving the threaded sleeve 44 to move laterally. The threaded sleeve 44 drives the puncture needle 46 to move laterally synchronously, realizing the operation of inserting the puncture needle 46 into the cable sheath. The voltage is directly output through the puncture needle 46 and the wire 47 for measurement, improving safety.

[0033] In this embodiment, a sealing sleeve 5 is installed inside the through hole and outside the puncture needle 46. The sealing sleeve 5 includes a collar 51 fixedly connected inside the through hole. One end of the collar 51 is provided with a sealing ring 52 placed in the wire clamping groove of the seat body 21. When the seat body 21 and the clamping block 22 are clamped and fixed on the cable, the collar 51 presses the sealing ring 52 against the outer skin of the cable, which is used to isolate the puncture needle 46 from the external environment, preventing dust, water vapor, etc. in the external environment from polluting the puncture needle 46 and affecting the measurement result.

[0034] In this embodiment, an installation groove 511 is annularly formed at one end of the collar 51. An installation ring 521 is provided at the other end of the sealing ring 52. The installation ring 521 is snapped into the installation groove 511. Snap ring grooves are formed on the inner and outer side walls of the installation groove 511. Snap ring rings that are snapped into the snap ring grooves are provided on the inner and outer side walls of the installation ring 521. Through this structural design, the installation ring 521 is firmly installed with the collar 51, preventing the installation ring 521 from detaching, and facilitating the replacement of the installation ring 521, with low maintenance cost and long service life.

[0035] In this embodiment, the positioning mechanism 2 is detachably installed on one side of the functional main body 1. A locking structure 3 is arranged between the bottom of the positioning mechanism 2 and the bottom of the functional main body 1, which is used to lock and fix the bottom of the positioning mechanism 2 and the functional main body 1. The provided locking structure 3 facilitates the disassembly and installation of the positioning mechanism 2 and the functional main body 1. When the functional main body 1 or the positioning mechanism 2 is damaged, they can be disassembled and replaced, which is beneficial for maintenance. Moreover, a functional main body 1 with a suitable size and specification can be selected to be adapted to the positioning mechanism 2, which is applicable to fixing the positioning mechanism 2 on cable lines of different sizes and has high applicability.

[0036] In this embodiment, a clamping block 25 is fixedly connected to the outer side wall of the seat body 21, and a clamping groove 11 adapted to the clamping block 25 is formed on the outer side wall of the functional main body 1. The positioning mechanism 2 and the functional main body 1 are clamped and installed through the clamping block 25 and the clamping groove 11. The provided clamping block 25 and clamping groove 11 are used for the preliminary positioning and assembly of the positioning mechanism 2 and the functional main body 1 to ensure the accurate installation position.

[0037] In this embodiment, the locking structure 3 includes a housing 31 fixedly connected to the bottom of the functional main body 1 and a fixing block 32 fixedly connected to the bottom of the seat body 21. The positions of the housing 31 and the fixing block 32 correspond to each other. An accommodating cavity with an opening facing the fixing block 32 is formed in the housing 31. An inserting block 311 is slidably installed in the accommodating cavity. A return spring 313 is fixedly connected between one end of the inserting block 311 and the inner wall of the accommodating cavity. A slot 321 for the inserting block 311 to insert is formed on the fixing block 32. A moving groove communicating with the accommodating cavity is formed at the bottom of the fixing block 32. A dial plate 312 passing through the moving groove is fixedly connected to the bottom of the inserting block 311. After the positioning mechanism 2 and the functional main body 1 are installed in place, the return spring 313 is used to push the inserting block 311 to move towards the fixing block 32, so that the inserting block 311 is inserted into the slot 321 of the fixing block 32, realizing the quick locking and fixing of the positioning mechanism 2 and the functional main body 1. By moving the dial plate 312, the inserting block 311 can be driven to move, and the inserting block 311 is separated from the slot 321 of the fixing block 32, so that the locking function between the positioning mechanism 2 and the functional main body 1 can be released, which helps the quick disassembly and assembly of the positioning mechanism 2 and the functional main body 1, and has a simple structure and convenient use.

[0038] In this embodiment, guiding grooves communicating the wire clamping groove and the slot 321 are formed on the side walls of the fixing block 32 and the seat body 21. The cross section of the inserting block 311 is a trapezoidal structure, and an inclined opening adapted to the inclined surface of the trapezoidal structure for sliding is arranged at the top of the guiding groove. When the positioning mechanism 2 and the functional main body 1 are installed, the cooperation of the inclined opening of the guiding groove and the inclined surface of the inserting block 311 helps the inserting block 311 to move along the guiding groove and insert into the slot 321.

[0039] Working principle: When in use, select a suitable functional body 1 and a positioning mechanism 2. The positioning mechanism 2 is snap-fitted and installed with the functional body 1 through a snap block 25 and a snap groove 11 to achieve preliminary positioning and assembly. After the positioning mechanism 2 and the functional body 1 are installed in place, the reset spring 313 acts to push the insertion block 311 towards the fixed block 32, so that the insertion block 311 is inserted into the slot 321 of the fixed block 32, realizing the quick locking and fixing of the positioning mechanism 2 and the functional body 1. Then, the functional body 1 is installed and fixed on the cable. By rotating the first knob 24, the adjusting screw 23 is driven to rotate, thereby adjusting the position of the clamping block 22 to clamp and fix the cable in the clamping groove between the seat body 21 and the clamping block 22. Then, by rotating the second knob 41, the threaded rod 42 is driven to rotate in the threaded sleeve 44, driving the threaded sleeve 44 to move horizontally. The threaded sleeve 44 drives the puncture needle 46 to move horizontally synchronously, realizing the operation of inserting the puncture needle 46 into the cable sheath. The voltage is output directly through the puncture needle 46 and the wire 47 for measurement, avoiding the danger brought by live working and improving safety. The provided locking structure 3 facilitates the disassembly and installation of the positioning mechanism 2 and the functional body 1. When the functional body 1 or the positioning mechanism 2 is damaged, it can be disassembled and replaced, which is beneficial for maintenance. Moreover, a functional body 1 with a suitable size and specification can be selected to be adapted to the positioning mechanism 2, and it is applicable to fixing the positioning mechanism 2 on cables of different sizes, with high applicability.

[0040] The above embodiments are the preferred implementation schemes of the present invention. In addition, the present invention can also be implemented in other ways. Any obvious replacement without departing from the concept of the technical solution is within the protection scope of the present invention.

Claims

1. A puncture power-taking clamp device, comprising a functional main body (1) and a positioning mechanism (2), characterized in that: The positioning mechanism (2) is detachably installed on one side of the functional body (1). A locking structure (3) is provided between the bottom of the positioning mechanism (2) and the bottom of the functional body (1) for locking and fixing the bottom of the positioning mechanism (2) and the functional body (1). The positioning mechanism (2) includes a base body (21) and a clamping block (22). Clamping grooves are formed on the opposite sides of the base body (21) and the clamping block (22). A spacing adjustment structure is provided between the clamping block (22) and the base body (21). A puncture power-taking structure (4) is arranged inside the base body (21). The puncture power-taking structure (4) includes a puncture needle (46) and a lateral adjustment component. A through hole communicating with its clamping groove is formed inside the base body (21). The lateral adjustment component is used to laterally adjust the position of the puncture needle (46) to pass the puncture needle (46) through the through hole and into the cable sheath.

2. The puncture power-taking clip device according to claim 1, characterized in that: The lateral adjustment component includes a threaded rod (42) rotatably connected inside the base body (21). One end of the threaded rod (42) extends outside the base body (21) and is fixedly connected with a second knob (41). A threaded sleeve (44) is threadedly sleeved on the outer side of the threaded rod (42). A fixed sleeve (43) is slidably sleeved on the outer side of the threaded sleeve (44). The fixed sleeve (43) is fixedly connected inside the base body (21). A limiting block is arranged on the inner wall of the fixed sleeve (43). A limiting groove is formed along the length direction on the outer wall of the threaded sleeve (44). The limiting block is placed in the limiting groove. A wire (47) is connected to the puncture needle (46). One end of the wire (47) passes through the base body (21) and extends to the outside.

3. The puncture power-taking clip device according to claim 2, characterized in that: A separation block (45) is fixedly connected between one end of the threaded sleeve (44) and the puncture needle (46).

4. The puncture power-taking clip device according to claim 1, wherein: The spacing adjustment structure includes an adjustment screw rod (23). A sliding groove is formed at the bottom end inside the base body (21). The adjustment screw rod (23) is rotatably connected in the sliding groove. One end of the clamping block (22) is slidably installed in the sliding groove and is threadedly connected with the adjustment screw rod (23). One end of the adjustment screw rod (23) extends outside the base body (21) and is fixedly connected with a first knob (24).

5. A puncture power-taking clip device according to claim 1, wherein: A sealing sleeve (5) is installed inside the through hole and outside the puncture needle (46). The sealing sleeve (5) includes a sleeve ring (51) fixedly connected inside the through hole. One end of the sleeve ring (51) is provided with a sealing ring (52) placed in the clamping groove of the base body (21).

6. The puncture power-taking clip device according to claim 5, wherein: An installation groove (511) is annularly formed at one end of the sleeve ring (51). One end of the sealing ring (52) is provided with an installation ring (521). The installation ring (521) is snapped into the installation groove (511). Snap ring grooves are formed on the side walls of the inner and outer circles of the installation groove (511). Snap ring circles that are snapped into the snap ring grooves are arranged on the side walls of the inner and outer circles of the installation ring (521).

7. A puncture power-taking clamp device according to claim 1, characterized in that: A clamping block (25) is fixedly connected to the outer side wall of the base body (21), a clamping groove (11) adapted to the clamping block (25) is formed in the outer side wall of the functional body (1), and the positioning mechanism (2) and the functional body (1) are clamped and installed through the clamping block (25) and the clamping groove (11).

8. The puncture power-taking clip device according to claim 1, wherein: The locking structure (3) includes a housing (31) fixedly connected to the bottom of the functional body (1) and a fixing block (32) fixedly connected to the bottom of the base body (21). The housing (31) and the fixing block (32) are in corresponding positions. An accommodating cavity with an opening facing the fixing block (32) is formed in the housing (31). A plug block (311) is slidably installed in the accommodating cavity. A return spring (313) is fixedly connected between one end of the plug block (311) and the inner wall of the accommodating cavity. A slot (321) for the plug block (311) to insert is formed in the fixing block (32).

9. The puncture power-taking clamp device according to claim 8, wherein: A moving groove communicating with the accommodating cavity is formed at the bottom of the fixing block (32), and a dial plate (312) passing through the moving groove is fixedly connected to the bottom of the plug block (311).

10. The puncture power-taking clip device according to claim 8, characterized in that: A guiding groove communicating the wire clamping groove and the slot (321) is formed in the side wall of the fixing block (32) and the base body (21). The cross section of the plug block (311) is a trapezoidal structure, and an inclined opening adapted to the inclined surface of the trapezoidal structure is arranged at the top of the guiding groove for sliding.

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