CN220752174U - Double-force clamping device for measuring cable conductor resistance - Google Patents
Double-force clamping device for measuring cable conductor resistance Download PDFInfo
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- CN220752174U CN220752174U CN202321934855.2U CN202321934855U CN220752174U CN 220752174 U CN220752174 U CN 220752174U CN 202321934855 U CN202321934855 U CN 202321934855U CN 220752174 U CN220752174 U CN 220752174U
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- 239000004020 conductor Substances 0.000 title claims abstract description 56
- 230000005540 biological transmission Effects 0.000 claims abstract description 38
- 238000005259 measurement Methods 0.000 claims abstract description 10
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000001514 detection method Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004870 electrical engineering Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
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Abstract
The utility model discloses a double-force clamping device for measuring cable conductor resistance, and relates to the field of cable detection equipment. The device comprises a bottom plate, an insulating support fixed on the bottom plate, a lower clamping piece and an upper clamping piece which are arranged on the insulating support, wherein the upper clamping piece and the lower clamping piece are mutually embedded, the upper clamping piece is fixed on a lifting screw rod, and the lifting screw rod passes through a transmission box positioned at the top of the insulating support to be connected with a primary driving device; the lifting screw rod is matched with a screw nut arranged in the transmission case, the screw nut is matched with a worm and gear type pressurizing mechanism arranged in the transmission case, and the transmission case is also provided with a lifting screw rod rotation stopping mechanism. The beneficial effects of the utility model are as follows: the primary clamping mechanism is used for primarily clamping, and the pressurizing mechanism is used for further clamping, so that the clamping force on the cable conductor is increased, and the conductor resistance measurement is more accurate.
Description
Technical Field
The utility model belongs to the field of cable detection equipment, relates to measurement of cable resistance, and in particular relates to a cable conductor resistance measurement clamping device.
Background
Cable resistance measurement is a test method used to evaluate the resistance of a cable conductor, which is important in electrical engineering because resistance is a key indicator of cable performance, directly affecting the transmission capacity and power loss of the cable.
In the prior art, when the resistance of a cable conductor is measured, two ends of the cable are clamped, and after the cable conductor is electrified, a resistance measurement test is performed. However, in the test process, the clamping forces on two ends of the cable conductor are different, so that the measured value of the cable conductor resistance changes, particularly the measured value of the aluminum conductor resistance changes along with the clamping force, and the generated fluctuation is larger, so that the accuracy of the cable resistance measuring result is greatly influenced. The research and comparison show that when the clamping force applied to the cable conductor reaches more than 3t, the measured resistance value tends to be stable. The clamping force applied to the cable conductor by the common cable conductor clamp is far less than 3t, so that the accuracy of the resistance measurement result of the cable conductor is affected.
Disclosure of Invention
The utility model provides a double-force clamping device for measuring the resistance of a cable conductor, which aims to solve the technical problem that the clamping force on the cable conductor is insufficient and the accuracy of resistance measurement is affected. The primary clamping mechanism is used for primarily clamping, and the pressurizing mechanism is used for further clamping, so that the clamping force on the cable conductor is increased, and the conductor resistance measurement is more accurate.
The technical scheme adopted by the utility model is as follows: the utility model provides a cable conductor resistance measures with doubly power clamping device, including the bottom plate, fix insulating support on the bottom plate, set up lower clamping piece and the last clamping piece on insulating support, go up clamping piece and the mutual gomphosis of lower clamping piece, its characterized in that: the upper clamping piece is fixed on a lifting screw rod, and the lifting screw rod penetrates through a transmission box positioned at the top of the insulating support to be connected with a primary driving device; the lifting screw rod is matched with a screw nut arranged in the transmission case, the screw nut is matched with a worm and gear type pressurizing mechanism arranged in the transmission case, and the transmission case is also provided with a lifting screw rod rotation stopping mechanism.
When clamping the sample, the two ends of the cable sample are respectively placed between the upper clamping piece and the lower clamping piece, the primary driving device rotates the lifting screw rod to be meshed with the screw nut so as to push the upper clamping piece to move downwards, the exposed conductor of the sample is clamped, the rotation of the lifting screw rod is limited by the rotation stopping mechanism, the worm and gear type pressurizing mechanism is used for enabling the upper clamping piece to further clamp the conductor, the clamping force of the conductor is increased, and the conductor resistance measurement is more accurate.
Further optimizing the technical scheme, the worm and gear type pressurizing mechanism comprises a worm gear sleeved with a screw nut and a worm matched with the worm gear; the worm is rotatably arranged with the transmission case, and the front end of the worm penetrates out of the transmission case and is fixedly provided with a crank.
The meshing of worm gear improves output torque to drive the lifting screw makes the conductor of last briquetting to cable export bigger clamping force, promotes the centre gripping effect.
Further optimizing the technical scheme, the rotation stopping mechanism comprises a gear positioned at the top of the transmission case, and the gear is sleeved with the lifting screw rod; the axial outer wall of the lifting screw rod is provided with a key slot, and the gear is in sliding connection with the key slot by means of a flat key which is arranged in a matching way; the gear is meshed with a pawl, and the pawl is rotatably arranged at the top of the transmission case.
When the pawl is disengaged from the gear, the lifting screw drives the gear to synchronously rotate, the lifting screw is meshed with the screw to lift, the rotation of the lifting screw is limited after the pawl is meshed with the gear, and the lifting screw is meshed to lift after the screw is driven to rotate, so that the lifting screw is flexible to use.
Further optimize this technical scheme, the slider is installed to the transmission case outer wall, and slidable mounting has the slide rail in the slider, and the connecting plate is installed to the slide rail bottom, connecting plate and last clamping piece fixed mounting.
When the lifting screw drives the upper clamping piece to move to clamp the cable conductor, the upper clamping piece drives the sliding rail to move along the sliding block, so that the upper clamping piece moves linearly, and the cable conductor is clamped smoothly and reliably.
Further optimize this technical scheme, primary drive device include with the hand wheel of lifting screw top installation.
The lifting screw rod is rotated through the hand wheel to be meshed with the screw nut, and then the upper clamping piece is driven to move so as to clamp or loosen the conductor of the cable, and the operation is simple and convenient.
The utility model has the beneficial effects that:
1. the method comprises the steps that two ends of a sample exposed conductor are respectively arranged between an upper clamping piece and a lower clamping piece, after a pawl is manually shifted to be disengaged from a gear, a lifting screw is manually rotated through a hand wheel to drive the gear to synchronously rotate, the lifting screw is meshed with a screw in a transmission box to drive the upper clamping piece to move downwards, the conductor of a cable is clamped, when the lifting screw is meshed with the screw, a worm wheel sleeved on the outer wall of the screw is meshed with a worm to be self-locked, the screw is limited to rotate, the rotating lifting screw is smoothly meshed with the screw, the upper clamping piece is driven to move, and in order to ensure the smoothness of operation and the safety of use, the worm wheel and the worm are fully kept in fixed positions through holding a crank, so that the smoothness and reliability of the meshing of the lifting screw and the screw are ensured;
2. after the upper clamping piece clamps the conductor of the cable, the pawl is manually stirred to be meshed with the gear, the rotation of the lifting screw is limited, the screw is meshed with the worm wheel through the crank to drive the screw to rotate, the screw is meshed with the lifting screw to move, the lifting screw moves along a flat key in a gear shaft hole through a key slot formed in the side wall to push the upper clamping piece to secondarily clamp the conductor of the cable, the worm wheel and the worm are meshed to lift output torque, so that the lifting screw is driven to push the upper clamping piece to apply larger clamping force to the conductor of the cable, and the measuring result of the conductor resistance of the cable is more accurate;
3. when the lifting screw pushes the upper clamping piece to move downwards to clamp the exposed conductor of the cable, the upper clamping piece is connected with the sliding rail through the connecting plate, and the sliding rail is in sliding connection with the sliding block on the outer wall of the transmission case, so that the upper clamping piece is limited to move along a straight line, and the clamping operation is more stable.
Drawings
FIG. 1 is a schematic diagram of the whole structure of a force-doubling clamping device for measuring the resistance of a cable conductor in the embodiment;
fig. 2 is a schematic diagram of an assembly structure of the lifting screw and the transmission case in the embodiment;
FIG. 3 is a schematic diagram of the structure of the rotation stopping mechanism according to the present embodiment;
fig. 4 is a schematic diagram of an installation structure of a worm gear and worm in a transmission case after the meshing teeth are hidden in the embodiment;
fig. 5 is a schematic diagram of a position structure of the worm gear with hidden meshing teeth in the present embodiment;
fig. 6 is a schematic diagram of an assembly structure of a lifting screw and a gear in the present embodiment.
In the figure, 1, a bottom plate; 2. an insulating support; 3. a lower clamping piece; 4. an upper clamping piece; 5. lifting a screw rod; 6. a transmission case; 7. a primary drive device; 8. a nut; 9. a pressurizing mechanism; 901. a worm wheel; 902. a worm; 903. a crank; 10. a rotation stopping mechanism; 1001. a gear; 1002. a key slot; 1003. a flat key; 1004. a pawl; 11. a slide block; 12. a slide rail; 13. and (5) connecting a plate.
Detailed Description
The utility model will be described in further detail with reference to the drawings and the detailed description.
Referring to fig. 1-3, the double-force clamping device for measuring the cable conductor resistance comprises a bottom plate 1, an insulating support 2 fixed on the bottom plate 1, a lower clamping piece 3 and an upper clamping piece 4 which are arranged on the insulating support 2, wherein the upper clamping piece 4 and the lower clamping piece 3 are mutually embedded, the upper clamping piece 4 is fixed on the lifting screw 5, the lifting screw 5 passes through a transmission box 6 positioned at the top of the insulating support 2 and is connected with a primary driving device 7, the primary driving device 7 drives the lifting screw 5 to rotate, the lifting screw 5 is matched with a screw 8 arranged in the transmission box 6, the screw 8 is matched with a worm-gear type pressurizing mechanism 9 arranged in the transmission box 6, the transmission box 6 is also provided with a lifting screw 5 rotation stopping mechanism 10, when a cable is clamped, two ends of the cable are respectively arranged between the upper clamping piece 4 and the lower clamping piece 3, the primary driving device 7 drives the lifting screw 5 to rotate after being meshed with the screw 8, the lifting screw 4 is pushed to move downwards to clamp the exposed conductor of the cable, and the rotation of the lifting screw 5 is limited by the rotation stopping mechanism 10, the lifting screw 8 is increased, and the lifting screw 5 is meshed with the lifting screw 5 to move, so that the cable is clamped for two times, the cable resistance is measured more accurately;
referring to fig. 2, 4 and 5, the worm-gear pressurizing mechanism 9 comprises a worm gear 901 sleeved with a screw nut 8, and a screw rod matched with the worm gear 901, the screw rod is rotatably installed with the transmission case 6, the front end of the worm 902 penetrates out of the transmission case 6, a crank 903 is fixedly installed, the worm 902 is rotated by the crank 903 to drive the worm gear 901 more labor-saving, when the worm gear 902 is meshed with the screw nut 8, the worm gear 901 is rotated to fix the screw nut 8, the worm gear 902 is smoothly meshed with the screw nut 8, an operator can hold the crank 903 to limit the rotation of the worm gear 901 and the screw nut 8, the position of the screw nut 8 is firmly fixed, so that the movement of the worm gear 5 along the screw nut 8 is smooth, after the rotation of the worm gear 902 is stopped by the rotation stopping mechanism 10, the worm gear 901 is meshed with the screw nut 8 to rotate, the worm gear 902 is meshed with the worm gear 5 to generate movement, the upper clamping piece 4 is pushed to clamp a conductor of the cable, the output torque of the worm 901 is lifted to the worm gear 902 to the worm 5, the worm 4 is pushed by the worm gear 4 to clamp the conductor of the cable, and the cable clamping force of the cable 4 is more accurate, and the measured result of the cable clamping resistance t is more accurate;
referring to fig. 2 and 3, the rotation stopping mechanism 10 includes a gear 1001 located at the top of the transmission case 6, the gear 1001 is sleeved with the lifting screw 5, a key slot 1002 is provided on the axial outer wall of the lifting screw 5, the gear 1001 is slidably connected with the key slot 1002 by means of a flat key 1003 which is arranged in a matching manner, so that the gear 1001 is slidably assembled with the lifting screw 5, the gear 1001 is meshed with a pawl 1004, the pawl 1004 is rotatably installed at the top of the transmission case 6, when the pawl 1004 is manually shifted to disengage from the gear 1001, the lifting screw 5 is meshed with a nut 8 by rotating the lifting screw 5, the conductor of the cable is extruded once, after the pawl 1004 is manually shifted to be meshed with the gear 1001, the lifting screw 5 is limited to rotate, and the worm gear 901 and the worm 902 drives the nut 8 to be meshed with the lifting screw 5, so that the upper clamping piece 4 is pushed to secondarily clamp the cable conductor, and the clamping force is improved;
referring to fig. 2 and 3, a sliding block 11 is installed on the outer wall of a transmission case 6, a sliding rail 12 is installed in the sliding block 11 in a sliding manner, a connecting plate 13 is installed at the bottom end of the sliding rail 12, the connecting plate 13 is fixedly installed with an upper clamping piece 4, and the sliding rail 12 and the sliding block 11 limit the upper clamping piece 4 to only go on linear lifting, so that the clamping of the cable with a lower clamping piece 3 is smoother and more stable;
referring to fig. 2, the primary driving device comprises a hand wheel mounted on the top of the lifting screw 5, the lifting screw 5 is manually rotated by the hand wheel, and after being meshed with the nut 8, the upper clamping piece 4 is pushed to clamp the conductor of the cable, so that the operation is simple and convenient;
the working principle of the double-force clamping device for measuring the cable conductor resistance is as follows: the method comprises the steps that two ends of a sample exposed conductor are respectively arranged between an upper clamping piece 4 and a lower clamping piece 3, after a pawl 1004 is manually shifted to be disengaged from a gear 1001, a lifting screw 5 is rotated through a hand wheel and drives the gear 1001 to synchronously rotate, the lifting screw 5 is meshed with a nut 8 in a transmission box 6, the upper clamping piece 4 is driven to move downwards to clamp the conductor of a cable, when the lifting screw 5 is meshed with the nut 8, a worm wheel 901 sleeved on the outer wall of the nut 8 is meshed with a worm 902 to be self-locked, the rotation of the nut 8 is limited, the rotating lifting screw 5 is smoothly meshed with the nut 8 and drives the upper clamping piece 4 to move, and in order to ensure the smoothness of operation and the safety of use, the worm wheel 901 is fully kept in fixed position by holding a crank 903, so that the position of the nut 8 is fixed, and the smoothness and reliability of the meshing of the lifting screw 5 with the nut 8 are ensured;
after the upper clamping piece 4 clamps the conductor of the cable, the pawl 1004 is manually stirred to be meshed with the gear 1001, the rotation of the lifting screw 5 is limited, the worm 902 is rotated by the crank 903 to be meshed with the worm wheel 901 to drive the screw 8 to rotate, the screw 8 is meshed with the lifting screw 5 to move, the lifting screw 5 moves along a flat key 1003 in a shaft hole of the gear 1001 through a key slot 1002 formed in the side wall to push the upper clamping piece 4 to secondarily clamp the conductor of the cable, the worm wheel 901 is meshed with the worm 902 to lift the output torque, and the lifting screw 5 is driven to push the upper clamping piece 4 to apply larger clamping force to the conductor of the cable, so that the measuring result of the conductor resistance of the cable is more accurate.
Claims (5)
1. The utility model provides a cable conductor resistance measurement is with doubly power clamping device, includes bottom plate (1), fixes insulating support (2) on bottom plate (1), lower clamping piece (3) and last clamping piece (4) of setting on insulating support (2), go up clamping piece (4) and the mutual gomphosis of lower clamping piece (3), its characterized in that: the upper clamping piece (4) is fixed on a lifting screw (5), and the lifting screw (5) penetrates through a transmission case (6) positioned at the top of the insulating support (2) to be connected with a primary driving device (7); the lifting screw rod (5) is matched with a screw nut (8) arranged in the transmission case (6), the screw nut (8) is matched with a worm and gear type pressurizing mechanism (9) arranged in the transmission case (6), and the transmission case (6) is also provided with a lifting screw rod (5) rotation stopping mechanism (10).
2. The double-force clamping device for measuring the resistance of a cable conductor according to claim 1, wherein: the worm and gear type pressurizing mechanism (9) comprises a worm wheel (901) sleeved with the screw nut (8) and a worm (902) matched with the worm wheel (901); the worm (902) and the transmission case (6) are rotatably installed, and the front end of the worm (902) penetrates out of the transmission case (6) and is fixedly provided with a crank (903).
3. The double-force clamping device for measuring the resistance of a cable conductor according to claim 1, wherein: the rotation stopping mechanism (10) comprises a gear (1001) positioned at the top of the transmission case (6), and the gear (1001) is sleeved with the lifting screw (5); a key groove (1002) is formed in the axial outer wall of the lifting screw rod (5), and the gear (1001) is in sliding connection with the key groove (1002) through a flat key (1003) which is arranged in a matching mode; the gear (1001) is meshed with a pawl (1004), and the pawl (1004) is rotatably arranged at the top of the transmission case (6).
4. The double-force clamping device for measuring the resistance of a cable conductor according to claim 1, wherein: the outer wall of the transmission case (6) is provided with a sliding block (11), a sliding rail (12) is arranged in the sliding block (11), the bottom end of the sliding rail (12) is provided with a connecting plate (13), and the connecting plate (13) is fixedly arranged with the upper clamping piece (4).
5. The double-force clamping device for measuring the resistance of a cable conductor according to claim 1, wherein: the primary driving device (7) comprises a hand wheel which is arranged on the top of the lifting screw rod (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321934855.2U CN220752174U (en) | 2023-07-21 | 2023-07-21 | Double-force clamping device for measuring cable conductor resistance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321934855.2U CN220752174U (en) | 2023-07-21 | 2023-07-21 | Double-force clamping device for measuring cable conductor resistance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220752174U true CN220752174U (en) | 2024-04-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321934855.2U Active CN220752174U (en) | 2023-07-21 | 2023-07-21 | Double-force clamping device for measuring cable conductor resistance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220752174U (en) |
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2023
- 2023-07-21 CN CN202321934855.2U patent/CN220752174U/en active Active
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