Adaptive cable clip module and adaptive cable clip

Abstract

The application discloses a self-adaptive wire clamp module and a self-adaptive cable clamp, wherein the self-adaptive wire clamp module comprises a shell and a plurality of telescopic cable clamping mechanisms arranged in the inner cavity of the shell; a plurality of guide holes are arranged on the shell in contact with the cable in the axial direction of the cable; according to the softening degree of the cable insulation layer, the clamping portions of the plurality of telescopic cable clamping mechanisms are extended out of the shell through the one-to-one corresponding plurality of guide holes to compress the cable by corresponding lengths. The self-adaptive wire clamp module quantizes the cable into smaller sections according to the number of the plurality of telescopic cable clamping mechanisms on the clamped cable section; the softening degree of the cable insulation layer caused by different temperatures is different; the length of the clamping portion corresponding to each small cable section is different; and the self-adaptive clamping of the cable under different temperature working environments is achieved, and the stability of the clamped cable is improved. The application improves the stability of the wire clamp clamped cable under different temperature working environments.

Description

Technical Field

[0001] This invention relates to the field of power tool technology, and in particular to an adaptive cable clamp module and an adaptive cable clamp. Background Technology

[0002] In existing high-voltage cable clamps, the clamping is stable during initial installation. However, as the high-voltage cable is energized and generates heat, the operating temperature can reach as high as 90 degrees Celsius. This causes the insulation layer of the high-voltage cable conductor to soften, resulting in the clamps holding the cable insulation layer loosening and poor clamping stability. Summary of the Invention

[0003] This invention provides an adaptive cable clamp module and an adaptive cable clamp, and innovatively proposes a technical solution for adaptive cable clamping, which improves the stability of cable clamping under different temperature working environments.

[0004] In a first aspect, the present invention provides an adaptive cable clamp module, which includes a housing and a plurality of retractable cable clamping mechanisms disposed in the inner cavity of the housing; On the housing of the contact cable, several guide holes are provided along the cable axis. Depending on the degree of softening of the cable insulation layer, the clamping parts of several retractable cable clamping mechanisms extend from the housing to a corresponding length through the corresponding guide holes to press the cable.

[0005] In this solution, the adaptive clamp module of the present invention quantifies the cable segment into smaller segments based on the number of several retractable cable clamping mechanisms. Different temperatures cause different degrees of softening of the cable insulation layer, and the length of the clamping part extending out of each small cable segment is different, thereby achieving the function of adaptively clamping the cable under different temperature working environments and improving the stability of clamping the cable.

[0006] As an improvement to the above solution, anti-reverse teeth are provided on the inner wall of the housing cavity; located on both sides or one side of the movement trajectory, the retractable cable clamping mechanism is provided with anti-reverse teeth, which are adapted to the anti-reverse teeth on the inner wall of the housing. In this solution, the unidirectional movement of the retractable cable clamping mechanism is ensured, and the clamping part can only move in the direction of the cable, avoiding the extended clamping part from moving back, which would cause instability in the clamping of the cable.

[0007] As an improvement to the above solution, positioning holes are provided on several of the retractable cable clamping mechanisms along the cable axis, and pin positioning holes are provided on the housing. A pin can pass through the pin positioning holes and several positioning holes on the housing, and the clamping part retracts into the guide hole. In this solution, during the initial installation stage, the adaptive clamp module first clamps the cable, forming the first layer of cable clamping under normal installation conditions. Then, the retractable cable clamping mechanism clamps the cable, forming the second layer of cable clamping as the operating temperature changes. Since the retractable cable clamping mechanism works based on the softening degree of the cable insulation layer, it needs to be reset during installation.

[0008] Preferably, the retractable cable clamping mechanism includes a cable clamping plate, a pushing block, and a first spring. The pushing block is movably connected to the cable clamping plate on the side facing the guide hole, and the size of the pushing block is larger than the diameter of the guide hole. One end of the first spring abuts against the pushing block, and the other end abuts against the inner wall of the housing. The deformation of the first spring pushes the clamping part of the cable clamping plate to extend or retract into the guide hole.

[0009] As an improvement to the above solution, positioning holes are provided on several cable clamping plates along the cable axis, and pin positioning holes are provided on the housing. A pin can pass through the pin positioning hole and several positioning holes, and the clamping part of the cable clamping plate retracts into the guide hole.

[0010] Furthermore, anti-reverse teeth are provided on the inner wall of the housing cavity; anti-reverse teeth are provided on the push block located on both sides or one side of the motion trajectory, which are adapted to the anti-reverse teeth on the inner wall of the housing; The push block includes a first push block and a second push block arranged in parallel. The same cable clamping piece has at least two movable connecting parts. At least one movable connecting part is movably connected to the first push block, and at least one movable connecting part is movably connected to the second push block. The parallel contact surfaces of the first push block and the second push block are connected by a second spring. The elastic deformation of the second spring pushes the first push block and the second push block to the inner wall of the housing respectively.

[0011] In this solution, the push block is divided into a first push block and a second push block. The elastic deformation of the second spring pushes the first push block and the second push block against the inner wall of the housing, thereby ensuring the stability of the push block's movement within the confinement space of the housing cavity.

[0012] Optionally, the movable connection is a connection between a protrusion and a groove, or a hinge.

[0013] Preferably, the outer surface of the housing in contact with the cable is arc-shaped, and / or the clamping part is arc-shaped to fit the shape of the cable.

[0014] Preferably, the housing is an openable mating housing. In this design, the mating housing facilitates the installation of the retractable cable clamping mechanism.

[0015] Optionally, the angle between the retractable cable clamping mechanism and the cable axis is not a right angle. In this solution, the clamping angle of the cable is controlled by the cable clamping plates of the retractable cable clamping mechanism, so that the cable can move unidirectionally upward or downward when it is slightly loose.

[0016] Furthermore, the inner wall of the housing is stepped, with the stepped surface perpendicular to the movement trajectory of the retractable cable clamping mechanism. In this design, because the inner cavity of the housing is inclined, it provides strong and stable support for the retractable cable clamping mechanism, while simplifying the manufacturing process and reducing the size of the clamp module. If the inner wall of the housing were flat, it would inevitably result in different lengths for the various retractable cable clamping mechanisms, complicating the manufacturing process.

[0017] In a second aspect, the present invention provides an adaptive cable clamp, comprising: The adaptive clamp modules surround and hold the cable, and fastening structures are provided on the housings of the plurality of said units, such that the adaptive clamp modules securely clamp the cable radially from the cable.

[0018] Optionally, the fastening device is a first bolt and a first nut, the first nut being a first threaded hole integrally formed with the housing; and / or, the fastening device is a clamp.

[0019] As an improvement to the above solution, the housing is also provided with a first fastening device, which includes two mating housings respectively provided with mating screws, which form a complete screw after mating. The screw passes through a through hole provided at one end of the long arm and is fastened to the housing of the adaptive clamp module. A pin is used to pass through the through hole at the other end of the long arm of the two adaptive clamp modules.

[0020] In this solution, an adaptive cable clamp is composed of multiple adaptive clamp modules. Two of the adaptive clamp modules have long arms that are pierced by a pin through the end through hole to form a semi-ring structure, which is used to hang on the utility pole to form a tension clamp. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of an adaptive wire clamp module provided in Embodiment 1 of the present invention; Figure 2 This is a schematic diagram of the retractable cable clamping mechanism provided in Embodiment 1 of the present invention; Figure 3 This is a cross-sectional view of the two adaptive clamp modules provided by the present invention from point AA. Figure 4 This is a schematic diagram of another embodiment of the push block provided by the present invention; Figure 5 This is a cross-sectional view of the two adaptive clamp modules provided by the present invention from the point where the housings meet. Figure 6 This is a schematic diagram of the structure of an adaptive wire clamp module provided in Embodiment 2 of the present invention; Figure 7 This is a schematic diagram of the structure of an adaptive cable clamp provided in Embodiment 4 of the present invention. Detailed Implementation

[0022] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0023] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this application described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0024] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing the invention and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0025] Furthermore, in addition to indicating direction or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in certain situations to indicate a dependency or connection. Those skilled in the art can understand the specific meaning of these terms in this invention based on the specific circumstances.

[0026] Furthermore, the terms "installation," "setup," "equipped with," "connection," "linking," and "socketing" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral constructions; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium, or internal connections between two devices, components, or parts.

[0027] Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0028] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0029] See Figure 1 This is a structural schematic diagram of an adaptive cable clamp module provided in Embodiment 1 of the present invention. The adaptive cable clamp module 100 of this embodiment includes a mating housing 110 and several retractable cable clamping mechanisms 120 disposed within the inner cavity of the housing. Anti-reverse teeth are provided on the front and rear inner walls of the mating housing forming the inner cavity. The housing facing the cable direction is an arc surface 111 adapted to the shape of the cable, and several guide holes 112 are provided on the arc surface along the cable axial direction. Screw holes 113 are respectively provided on the top of the mating housing for fixing with bolts, and screw holes 113 are respectively provided on the bottom of the mating housing for fixing with bolts, thereby fixing the mating housing.

[0030] See Figure 2-3 The retractable cable clamping mechanism 120 includes a cable clamping plate 121, a push block 122, and a first spring 123. The push block 122 has two grooves 1220 on the side facing the guide hole 112, which are adapted to and movably connected to two protrusions 1220' on the cable clamping plate. A positioning hole 1228 is provided on the other end face of the push block, opposite to the cable clamping plate, to accommodate one end of the first spring 123. The other end of the first spring 123 abuts against the right wall 1151 of the adaptive clamp module's inner cavity. The longitudinal height of the push block is greater than the longitudinal diameter of the guide hole, used to limit the position of the push block. Anti-reverse teeth 1223 are provided on both sides of the movement trajectory, adapted to the anti-reverse teeth on the front and rear walls 1152 and 1153 of the inner cavity, ensuring unidirectional movement of the push block.

[0031] Positioning holes 1210 are provided on several cable clamping pieces along the cable axis, and pin positioning holes 116 are provided on the housing. When in use, the elastic force of the first spring 123 compresses and deforms, pushing several cable clamping pieces through the guide hole 112 into the inner cavity of the housing. A pin passes through the pin positioning hole 116 on the housing and the positioning holes 1210 on several cable clamping pieces, thereby compressing the first spring 123. The pushing block is located in the initial position away from the cable, and the cable clamping pieces 121 retract into the guide hole 112. At this time, it is in the initial stage of installation. In the adaptive clamp module installation position, that is, after the end of the adaptive clamp module housing with the guide hole 112 is fixed close to the cable, the pin is pulled out. Under the extension deformation of the first spring 123, the pushing block moves towards the cable. Several cable clamping pieces 121 extend one by one from the guide hole 112 of the housing, and the clamping part 1211 radially presses the insulation layer of the cable 300. When the cable's operating temperature rises, causing the cable insulation to soften, the cable segment held by the adaptive clamp module is quantified into smaller segments based on the number of clamping plates. Different temperatures cause varying degrees of insulation softening in these smaller segments, resulting in different protrusion lengths of the clamping plates from the guide holes. Under the same initial spring stretching force, the greater the degree of insulation softening, the longer the clamping plates protrude from the guide holes, and vice versa. Because the clamping forces on the clamping plates differ according to the degree of insulation softening, the protrusion lengths vary, thus achieving the adaptive clamping function and improving the stability of the cable held by the adaptive clamp module.

[0032] Preferably, the cable clamping portion 1211 is arc-shaped to adapt to the shape of the cable.

[0033] See Figure 4 In another embodiment of the push block, the push block 122 includes a first push block 1221 and a second push block 1222 arranged in parallel. One of the two protrusions 1220' on the same cable clamping piece is movably inserted into the groove 1220 of the first push block, and the other protrusion 1220' is movably inserted into the groove 1220 of the second push block. Blind holes 1229 are respectively provided on the parallel abutment surfaces of the first push block and the second push block to accommodate a second spring 1230. The elastic deformation of the second spring 1230 pushes the first push block and the second push block against the front and rear walls 1152 and 1153 of the inner cavity of the housing, respectively. This makes the anti-reverse teeth 1223 on the first push block 1221 engage more tightly with the anti-reverse teeth on the front wall 1152 of the inner cavity, and the anti-reverse teeth 1223 on the second push block 1222 engage more tightly with the anti-reverse teeth on the rear wall 1153 of the inner cavity, thus preventing instability of the push block during left and right movement.

[0034] See Figure 6This is a schematic diagram of the structure of an adaptive clamp module provided in Embodiment 2 of the present invention. This embodiment is based on Embodiment 1, but differs in that the inner cavity of the adaptive clamp module is inclined, causing the cable clamping piece 121 to have a certain angle α with the cable axis M. This angle α is not a right angle, thus ensuring that even if the cable slides with the clamp, it can only slide in one direction. Specifically, the moving trajectory S of the cable clamping piece is below the radial cross-section of the cable where the cable clamping piece and the cable clamping point P are located, and the cable can only move upwards relative to the adaptive clamp module. Conversely, when the adaptive clamp module is flipped upside down and installed on the cable, the moving trajectory of the cable clamping piece is above the radial cross-section of the cable where the cable clamping piece and the cable clamping point are located, and the cable can only move downwards relative to the adaptive clamp module.

[0035] To provide better support for the first spring, the right wall 1151 of the inner cavity of the housing is set in a stepped shape, and the stepped surface 115A is perpendicular to the moving trajectory position S of the retractable cable clamping mechanism.

[0036] This embodiment utilizes the clamping direction of the cable clamping plate to control the cable movement direction when the cable is slightly loose.

[0037] See Figure 5 This is a schematic diagram of the structure of an adaptive cable clamp provided in Embodiment 3 of the present invention. The adaptive cable clamp includes two adaptive clamp modules 100, which together fix and clamp the cable 300.

[0038] Preferably, the two adaptive clamp modules have identical structures. The cable clamping plates 121 of the two adaptive clamp modules clamp the cable 300 wire relative to each other. This can be applied when the cable is located in different environments, resulting in different temperatures on both sides of the cable radially, different degrees of softening of the insulation layer on both sides of the cable, and different lengths of the cable clamping plates extending out of the guide holes. The adaptive clamping force of the cable clamping plates improves the radial clamping stability of the adaptive cable clamp. Due to the different clamping forces of the multiple cable clamping plates along the cable axial direction, the clamped cable itself is wavy, further preventing axial loosening of the cable and improving the clamping stability of the adaptive cable clamp.

[0039] The front sides of the two adaptive cable clamp module housings are provided with first screw holes 1170 integrally formed with the housings, which are fixed by the same first bolt 1171. The rear sides of the two adaptive cable clamp module housings are provided with the same fastening structure. The fastening structures on the front and rear sides of the two adaptive cable clamp module housings are located on both sides of the cable, fixing and clamping the cable 300 radially. In use, the cable is first fixed and clamped radially by the cooperation of the first screw holes 1170 and the first bolts 1171. Then, the pins in the adaptive cable clamp module are pulled out, so that several cable clamping pieces 121 extend out from the guide holes 112 of the housing one by one, and radially press against the cable insulation layer, thus completing the installation of the adaptive cable clamp.

[0040] Furthermore, each of the two mating housings is provided with a mating screw 118, which, when mated, forms a complete screw, which, together with a nut 119, further secures the two mating housings. A long arm 130 is provided between the nut and the housing, and the screw passes through a through hole 131 at one end of the long arm 130 and is secured to the adaptive clamp module housing. The other end of the long arms on the two adaptive clamp module housings is provided with a through hole 132, which, together with a pin 140, passes through the other through hole 132 on the long arms of both adaptive clamp modules, forming a semi-ring structure for hanging on a utility pole to form a tension clamp, which can be used independently.

[0041] Furthermore, traditional tension clamps have pull holes. On utility poles where traditional tension clamps are already installed, to reduce the cost of replacing them with new tension clamps, the pin 140 of the adaptive cable clamp passes through the pull hole of the traditional tension clamp. Two adaptive clamp modules 100 clamp the cable, preventing the traditional tension clamp from loosening. As a further safety measure against loosening, the two long arms of the traditional tension clamp, which were installed before the new product replacement, continue to hang on the utility pole. In other words, the adaptive cable clamp works in conjunction with the traditional tension clamp, reducing the replacement cost of the new tension clamp and solving the problem of unstable cable clamping by the traditional tension clamp.

[0042] Optionally, one of the adaptive clamp modules is a solid structure without internal structure, which only serves to support the cable clamping plates of the other adaptive clamp module to apply force.

[0043] See Figure 7This is a schematic diagram of the structure of an adaptive cable clamp provided in Embodiment 4 of the present invention. This embodiment is based on Embodiment 1 or 2, the difference being that the adaptive cable clamp includes three adaptive clamp modules 100, with the cable clamping plates of the three adaptive clamp modules circumferentially clamping the cable. A fastening device is provided on the periphery of the adaptive clamp module housing to stably clamp the three adaptive clamp modules onto the cable. Specifically, the fastening device is an upper and lower clamp 200, one end of which is a hinge point 210, and the other end of which is provided with a nut 220, which, in conjunction with a bolt 230, fastens the three adaptive clamp modules 100.

[0044] The above description represents the preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and these improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. An adaptive wire clamp module, characterized in that, The housing and several retractable cable clamping mechanisms disposed within the housing cavity; On the housing of the contact cable, several guide holes are provided along the cable axis. Depending on the degree of softening of the cable insulation layer, the clamping parts of several retractable cable clamping mechanisms extend from the housing to a corresponding length through the corresponding guide holes to press the cable.

2. The adaptive wire clamp module as described in claim 1, characterized in that, Anti-reverse teeth are provided on the inner wall of the housing cavity; located on both sides or one side of the movement trajectory, the retractable cable clamping mechanism is provided with anti-reverse teeth, which are adapted to the anti-reverse teeth on the inner wall of the housing.

3. The adaptive wire clamp module as described in claim 1, characterized in that, Positioning holes are provided on several of the retractable cable clamping mechanisms along the cable axis, and pin positioning holes are provided on the housing. A pin can pass through the pin positioning holes and several positioning holes on the housing, and the clamping part retracts into the guide hole.

4. The adaptive wire clamp module as described in claim 1, characterized in that, The retractable cable clamping mechanism includes a cable clamping plate, a push block, and a first spring. The push block is movably connected to the cable clamping plate on the side facing the guide hole, and the size of the push block is larger than the diameter of the guide hole. One end of the first spring abuts against the push block, and the other end abuts against the inner wall of the housing. The deformation of the first spring pushes the clamping part of the cable clamping plate to extend or retract into the guide hole.

5. The adaptive wire clamp module as described in claim 4, characterized in that, Positioning holes are provided on several cable clamping plates along the cable axis, and pin positioning holes are provided on the housing. A pin can pass through the pin positioning hole and several positioning holes. The clamping part of the cable clamping plate retracts into the guide hole.

6. The adaptive wire clamp module as described in claim 4, characterized in that, The inner wall of the housing cavity is provided with anti-reverse teeth; the push block is provided with anti-reverse teeth on both sides or one side of the motion trajectory, which are adapted to the anti-reverse teeth on the inner wall of the housing. The push block includes a first push block and a second push block arranged in parallel. The same cable clamping piece has at least two movable connecting parts. At least one movable connecting part is movably connected to the first push block, and at least one movable connecting part is movably connected to the second push block. The parallel contact surfaces of the first push block and the second push block are connected by a second spring. The elastic deformation of the second spring pushes the first push block and the second push block to the inner wall of the housing respectively.

7. The adaptive wire clamp module as described in claim 6, characterized in that, The movable connection is a connection between a protrusion and a groove, or a hinge.

8. The adaptive wire clamp module as described in any one of claims 1-7, characterized in that, The outer surface of the housing that contacts the cable is curved, and / or the clamping part is curved to fit the shape of the cable.

9. The adaptive wire clamp module as described in claim 1, characterized in that, The housing is an openable, mating housing.

10. The adaptive wire clamp module as described in claim 1, characterized in that, The angle between the retractable cable clamping mechanism and the cable axis is not a right angle.

11. The adaptive wire clamp module as described in claim 10, characterized in that, The inner wall of the housing is stepped, and the stepped surface is perpendicular to the moving trajectory of the retractable cable clamping mechanism.

12. An adaptive cable clamp, characterized in that, The device includes several adaptive clamp modules as described in any one of claims 1-8 that surround and clamp the cable, and the housings are provided with fastening structures such that the adaptive clamp modules securely clamp the cable radially from the cable.

13. The adaptive cable clamp as described in claim 12, characterized in that, The fastening device is a first bolt and a first nut, the first nut being a first threaded hole integrally formed with the housing; and / or, the fastening device is a clamp.

14. The adaptive cable clamp as described in claim 12, characterized in that, The housing is also provided with a first fastening device, which includes two mating housings respectively provided with mating screws, which form a complete screw after mating. The screw passes through a through hole provided at one end of the long arm and is fastened to the housing of the adaptive clamp module. A pin is used to pass through the through hole at the other end of the long arm of the two adaptive clamp modules.

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