CN212571922U - Cable pulling structure - Google Patents
Cable pulling structure Download PDFInfo
- Publication number
- CN212571922U CN212571922U CN202021024677.6U CN202021024677U CN212571922U CN 212571922 U CN212571922 U CN 212571922U CN 202021024677 U CN202021024677 U CN 202021024677U CN 212571922 U CN212571922 U CN 212571922U
- Authority
- CN
- China
- Prior art keywords
- cable
- clamping jaw
- clamping
- pulling structure
- structure according
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 210000000078 claw Anatomy 0.000 claims description 11
- 239000004576 sand Substances 0.000 claims description 4
- 238000000034 method Methods 0.000 description 6
- 238000001125 extrusion Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 241000251468 Actinopterygii Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Images
Landscapes
- Installation Of Indoor Wiring (AREA)
- Clamps And Clips (AREA)
Abstract
The utility model provides a cable pulling structure, include: the clamping jaw set comprises a body and at least one group of clamping jaw sets arranged in the body, wherein each group of clamping jaw set comprises at least two clamping jaws; the clamping jaws are uniformly arranged around the axial direction of the body and surround an abdicating channel for the cable to pass through; the part of the inner wall of the body, which is in contact with the clamping jaw, is provided with a structure with a gradually reduced opening radius; the radius of the opening is gradually reduced in a direction opposite to the direction in which the cable is inserted into the body; the part of the clamping jaw, which is contacted with the inner wall of the body, is an inclined plane attached to the inner wall of the body; when the cable moves along the direction opposite to the direction of entering the body, the inner wall of the body presses the inclined surface of the clamping jaw, so that the diameter of the abdicating channel is reduced, and the clamping jaw is folded along the direction close to the axial direction of the body.
Description
Technical Field
The utility model relates to a cable system especially relates to cable fixing device.
Background
Proper wire and cable management in building structures is important for safe and efficient operation of power and cable operations of buildings.
When a wire or cable needs to be protected from potential injury, it can be pulled through various conduits. The conduit can be made of metal, rigid plastic (e.g., PVC), and other materials, and the wires and cables can range from very thin wires (which can be bunched to pass through the conduit) to very thick cables (which do not have to be combined with other wires or cables as they pass through the conduit). For the purposes of this disclosure, the term "cable" or "electrical cable" refers in this disclosure to any type of electrical wire, cable, or similar elongated component that can be inserted and pulled through a conduit.
Because the conduit can be long and bends are provided as required by the building structure, it can be difficult to pull the cable through even a short length of conduit. Traditionally, tools such as electrician's lay wire pull-off (fish tape) have been used to attach to the end of a cable and pull the cable through a conduit. Generally, the wire-laying pull wire is made of a strong and tough material (e.g., steel) to support the pulling load and has a collar at one end to secure the end of the cable. In the case where the cable being pulled is not insulated, or the insulation is stripped off at the end secured to the lay wire pull wire, insulating tape may be applied over the exposed section of the cable. Other methods than using a wireline pull wire, such as pushing or twisting a cable through a conduit, have been attempted but have not been satisfactory.
Unfortunately, the over-the-wire pull wire method and other methods of pulling the cable through the conduit do not always function properly and if the over-the-wire pull wire is detached from the cable during the process of pulling the cable through the conduit, it is difficult to withdraw the inserted cable to restart the entire process. Often in such cases, the conduit must be removed and/or broken to access the end of the cable, which can be expensive and time consuming.
For example, in the technical solution disclosed in taiwan patent TW201923271A, in order to provide a sufficient clamping force, a step-shaped rib needs to be formed on the inner surface of the clamping jaw, which is difficult to process and relatively high in cost. And this scheme needs the jack catch to remove along the axial left-right movement, and two jack catches are easy off-centre dislocation from top to bottom like this, cause hold tight power little, unstable scheduling problem.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the main technical problem that a cable pulling structure is provided, parts machining and assembly are all fairly simple, and the power of holding tightly is also stronger.
In order to solve the technical problem, the utility model provides a cable pulling structure, include: the clamping jaw set comprises a body and at least one group of clamping jaw sets arranged in the body, wherein each group of clamping jaw set comprises at least two clamping jaws; the clamping jaws are uniformly arranged around the axial direction of the body and surround an abdicating channel for the cable to pass through;
the part of the inner wall of the body, which is in contact with the clamping jaw, is provided with a structure with a gradually reduced opening radius; the radius of the opening is gradually reduced in a direction opposite to the direction in which the cable is inserted into the body; the part of the clamping jaw, which is contacted with the inner wall of the body, is an inclined plane attached to the inner wall of the body; when the cable moves along the direction opposite to the direction of entering the body, the inner wall of the body presses the inclined surface of the clamping jaw, so that the diameter of the abdicating channel is reduced, and the clamping jaw is folded along the direction close to the axial direction of the body.
In a preferred embodiment: the side of the claw facing the cable is provided with a structure for increasing the friction force between the claw and the cable.
In a preferred embodiment: the structure for increasing the friction force between the clamping jaw and the cable is saw teeth or threads or knurls which are arranged along the axial direction parallel to the cable.
In a preferred embodiment: the jaws in the same jaw group are spaced apart from each other, or only a portion of the side surfaces of the jaws are connected to each other to form a jaw group.
In a preferred embodiment: the cable fixing device also comprises a clamping ring, wherein the center of the clamping ring is respectively provided with an opening for the cable to pass through; the periphery of the opening of snap ring is provided with the sand grip, the sand grip extends along the direction that the open-ended is radial and the cable got into the body simultaneously.
In a preferred embodiment: the tail end of the convex strip is in interference fit with the side wall of the cable, and when the cable moves along the direction of entering the body, the friction force generated by the cable and the convex strip pushes the tail end of the convex strip to move towards the direction far away from the cable; when the cable moves along the direction opposite to the direction of entering the body, the friction force generated by the cable and the convex strip pushes the tail end of the convex strip to move towards the direction close to the cable.
In a preferred embodiment: still include the sleeve pipe, the sleeve pipe setting is at the snap ring and gets into the rear end of body direction along the cable.
In a preferred embodiment: the sleeve is an elastic part or a non-elastic part.
In a preferred embodiment: comprises a cover and a guy cable; the cover is connected to the other end of the body; and the cover is provided with a through hole along the axial direction of the body, and one end of the inhaul cable passes through the through hole to be in limit fit with the cover against the entering direction of the inhaul cable.
Compared with the prior art, the technical scheme of the utility model possess following beneficial effect:
the utility model provides a cable is carried and is drawn structure, through the inclined plane cooperation of body and jack catch, realize when the cable received outside pulling force, the extrusion force that produces between the inclined plane drives the jack catch and folds for the jack catch embraces with the cable and presss from both sides, prevents that the cable from deviating from the body. The structure has simple processing requirements on the clamping jaws, and parts such as clamping grooves and the like do not need to be formed on the clamping jaws.
Drawings
Fig. 1 is an exploded view of a cable pulling structure in a preferred embodiment of the present invention;
fig. 2 is a cross-sectional view of a cable pulling structure according to a preferred embodiment of the present invention.
Detailed Description
The technical solution of the present invention will be further explained with reference to the accompanying drawings and the detailed description.
Referring to fig. 1 to 2, a cable pulling structure includes: the clamping device comprises a body 1 and at least one group of clamping jaw groups 2 arranged in the body 1, wherein each group of clamping jaw group 2 comprises at least two clamping jaws 21; the claws 21 are uniformly arranged around the axial direction of the body 1 and surround an abdicating channel for the cable 3 to pass through;
the part of the inner wall of the body 1, which is contacted with the clamping jaw 21, is provided with a structure with a gradually reduced opening radius; the radius of the opening is gradually reduced in the direction opposite to the direction in which the cable 3 is inserted into the body 1; the part of the claw 21 contacting with the inner wall of the body 1 is an inclined plane attached to the inner wall of the body 1; when the cable 3 moves along the direction opposite to the direction of entering the body 1, the inner wall of the body 1 presses the inclined surface of the claw 21, so that the diameter of the abdicating channel is reduced, and the claw 21 is folded along the direction close to the axial direction of the body 1.
Foretell cable 3 carries and draws structure, through the inclined plane cooperation of body 1 and jack catch 21, when realizing that cable 3 receives outside pulling force, the extrusion force that produces between the inclined plane drives jack catch 21 and folds for jack catch 21 embraces with cable 3 and presss from both sides, prevents that cable 3 from deviating from body 1. The structure has simple processing requirements on the clamping jaw 21, and parts such as a clamping groove and the like do not need to be formed on the clamping jaw 21.
In this embodiment, in order to increase the clamping force between the claw 21 and the cable 3, the side of the claw 21 facing the cable 3 has a structure that increases the friction force between the claw 21 and the cable 3. The structure for increasing the friction between the jaws 21 and the cable 3 in this embodiment is a serration arranged in an axial direction parallel to the cable 3, which may be a thread or a knurling as a simple alternative.
The jaws 21 in the same jaw group 2 are spaced apart from each other, or only a part of the side surfaces of the jaws 21 are connected to each other to form one jaw group 2. That is, the jaws 21 in the same jaw set 2 may be integrally arranged or separately arranged.
In this embodiment, the cable connector further comprises a snap ring 4, wherein the center of the snap ring is respectively provided with an opening for the cable 3 to pass through; the periphery of the opening of the snap ring 4 is provided with a protruding strip 41, and the protruding strip 41 extends along the radial direction of the opening and the direction in which the cable 3 enters the body 1.
The tail end of the convex strip 41 is in interference fit with the side wall of the cable 3, when the cable 3 moves along the direction entering the body 1, the friction force generated by the cable 3 and the convex strip 41 pushes the tail end of the convex strip 41 to move towards the direction far away from the cable 3; when the cable 3 moves in the direction opposite to the direction of entering the body 1, the friction force generated by the cable 3 and the convex strip 41 pushes the end of the convex strip 41 to move towards the direction close to the cable 3. Therefore, when the cable 3 enters the body 1, the convex strip 41 cannot obstruct the cable 3 from entering the body 1, and when the cable 3 is pulled, the convex strip 41 moves towards the direction close to the cable 3, so that the friction force between the convex strip 41 and the cable 3 is increased, and the holding force is further increased.
The embodiment also comprises a sleeve 5, and the sleeve 5 is arranged at the rear end of the snap ring 4 along the direction that the cable 3 enters the body 1. The sleeve 5 is an elastic part or a non-elastic part.
And, the present embodiment includes a cover 6 and a stay 7; the cover 6 is connected to the other end of the body 1; and the cover 6 is provided with a through hole along the axial direction of the body 1, and one end of the cable 7 passes through the through hole to be in limit fit with the cover 6 against the direction in which the cable 7 enters.
The above description is only an exemplary embodiment of the present invention, and the scope of the present invention should not be limited accordingly. The equivalent changes and modifications made according to the patent scope and the content of the specification of the present invention should still fall within the scope covered by the present invention.
Claims (9)
1. A cable pulling structure, characterized by comprising: the clamping jaw set comprises a body and at least one group of clamping jaw sets arranged in the body, wherein each group of clamping jaw set comprises at least two clamping jaws; the clamping jaws are uniformly arranged around the axial direction of the body and surround an abdicating channel for the cable to pass through;
the part of the inner wall of the body, which is in contact with the clamping jaw, is provided with a structure with a gradually reduced opening radius; the radius of the opening is gradually reduced in a direction opposite to the direction in which the cable is inserted into the body; the part of the clamping jaw, which is contacted with the inner wall of the body, is an inclined plane attached to the inner wall of the body; when the cable moves along the direction opposite to the direction of entering the body, the inner wall of the body presses the inclined surface of the clamping jaw, so that the diameter of the abdicating channel is reduced, and the clamping jaw is folded along the direction close to the axial direction of the body.
2. A cable pulling structure according to claim 1, wherein: the side of the claw facing the cable is provided with a structure for increasing the friction force between the claw and the cable.
3. A cable pulling structure according to claim 2, wherein: the structure for increasing the friction force between the clamping jaw and the cable is saw teeth or threads or knurls which are arranged along the axial direction parallel to the cable.
4. A cable pulling structure according to any one of claims 1 to 3, wherein: the jaws in the same jaw group are spaced apart from each other, or only a portion of the side surfaces of the jaws are connected to each other to form a jaw group.
5. A cable pulling structure according to claim 1, wherein: the cable fixing device also comprises a clamping ring, wherein the center of the clamping ring is respectively provided with an opening for the cable to pass through; the periphery of the opening of snap ring is provided with the sand grip, the sand grip extends along the direction that the open-ended is radial and the cable got into the body simultaneously.
6. A cable pulling structure according to claim 5, wherein: the tail end of the convex strip is in interference fit with the side wall of the cable, and when the cable moves along the direction of entering the body, the friction force generated by the cable and the convex strip pushes the tail end of the convex strip to move towards the direction far away from the cable; when the cable moves along the direction opposite to the direction of entering the body, the friction force generated by the cable and the convex strip pushes the tail end of the convex strip to move towards the direction close to the cable.
7. A cable pulling structure according to claim 6, wherein: still include the sleeve pipe, the sleeve pipe setting is at the snap ring and gets into the rear end of body direction along the cable.
8. A cable pulling structure according to claim 7, wherein: the sleeve is an elastic part or a non-elastic part.
9. A cable pulling structure according to claim 1, wherein: comprises a cover and a guy cable; the cover is connected to the other end of the body; and the cover is provided with a through hole along the axial direction of the body, and one end of the inhaul cable passes through the through hole to be in limit fit with the cover against the entering direction of the inhaul cable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021024677.6U CN212571922U (en) | 2020-06-05 | 2020-06-05 | Cable pulling structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021024677.6U CN212571922U (en) | 2020-06-05 | 2020-06-05 | Cable pulling structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212571922U true CN212571922U (en) | 2021-02-19 |
Family
ID=74628952
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021024677.6U Active CN212571922U (en) | 2020-06-05 | 2020-06-05 | Cable pulling structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212571922U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113097927A (en) * | 2021-04-06 | 2021-07-09 | 国网河北省电力有限公司衡水供电分公司 | Threading apparatus for communication machine room |
-
2020
- 2020-06-05 CN CN202021024677.6U patent/CN212571922U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113097927A (en) * | 2021-04-06 | 2021-07-09 | 国网河北省电力有限公司衡水供电分公司 | Threading apparatus for communication machine room |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11018481B1 (en) | Cable securing device | |
| US4262409A (en) | Cable connector | |
| US3450828A (en) | Terminal piece for the connection of electrical cables | |
| US6177633B1 (en) | Cable connector | |
| CN212571922U (en) | Cable pulling structure | |
| EP2959548B1 (en) | Automatic splice having a magnetic indicator | |
| CN116057800A (en) | Coupling device and method for pulling wires through conduit | |
| CN211605923U (en) | Embrace folder and cable and carry structure of drawing | |
| CN113517578B (en) | Radio frequency cable quick connector | |
| US3452318A (en) | Shielded cable termination | |
| CN212033642U (en) | Cable lifting and fixing structure | |
| CN110829283B (en) | Cable lifting structure | |
| US10811863B1 (en) | Liquid-tight and concrete-tight fitting for PVC-jacketed metal-clad electrical cable | |
| CN210693273U (en) | Cable pulling structure | |
| CN211606045U (en) | Cable holding and clamping structure | |
| JPS61191223A (en) | Lead-in clamp | |
| CN212412671U (en) | Quick connector for cable guide pipe | |
| US3144500A (en) | Terminal clamp for messengrer cable | |
| KR100891136B1 (en) | Holder for electric wire connection | |
| KR100604575B1 (en) | Cable Gripping Device and Cable Traction Device | |
| CN212412672U (en) | Waterproof quick connector of cable conduit | |
| KR200444333Y1 (en) | Neutral array of underground power cables | |
| US20130244505A1 (en) | Compression terminal for stranded wire and non-electrical wire | |
| JPH10201035A (en) | Tip tool for drawing lead | |
| JP2007059109A (en) | Electric wire end insulating cap |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |