Cable mounting bracket

Abstract

The present invention belongs to the technical field of cable installation, and specifically relates to a cable installation bracket, which includes a base plate, a cover plate and a plurality of clamping assemblies. The base plate is provided with assembly holes, the cover plate is provided with through holes, and the assembly holes are opposite to the through holes up and down. The clamping assembly is matched with the assembly holes one by one, and includes an inner sleeve, an outer sleeve and a second screw ring. A plurality of pressure arms are provided on the upper part of the barrel body of the inner sleeve. The barrel body is placed in the assembly hole and fixedly connected to the base plate. The pressure arm extends outwardly in a vertical direction and a rubber pad is fixedly provided on the upper part of the inner wall surface. The outer sleeve matches the through hole and a tapered hole is formed at the lower part of the barrel cavity, and the upper end can match the second screw ring. After the inner and outer sleeves are matched, the lower part of the pressure arm extends into the tapered hole. When the outer sleeve moves upward relative to the inner sleeve, the tapered hole can force the pressure arm to move closer to the axial center line side of the inner sleeve at the same time. The present invention overcomes the problems of uneven cable clamping, easy sliding and easy damage to the rubber.

Description

Technical Field

[0001] The invention relates to the technical field of cable installation and connection, and in particular to a cable installation bracket. Background Art

[0002] In the prior art, cable clamps or net bags are often used to install cables on the cabin. The use of cable clamps to fix and install cables relies on the static friction between the clamps and the rubber of the cables to prevent the cables from sliding down relative to the clamps. The use of cable net bags to fix and install cables uses a steel wire mesh to tighten the cable rubber under the action of gravity to prevent the cables from sliding down.

[0003] As the power of wind turbines continues to increase, the cable specifications configured for them also increase accordingly, the weight of the cables themselves increases significantly, and the vibration conditions generated by the wind turbines themselves are relatively stronger. When using existing cable clamps and net bags to fix cables, the clamping force of the clamps is insufficient, and there are large differences in the clamping force conditions of each cable in the cable group, with poor uniformity, which easily leads to relatively poor stability and reliability of the clamping state of the cable clamps for the cable group, and some cables are prone to excessive slippage. It is also easy to have a problem that the cable rubber is severely worn when the cable slips relatively far relative to the clamp. In addition, excessive cable slippage will also damage the connection joints between the twisted cable and the generator, posing a huge risk to the operation of the unit, and easily causing damage to the cable rubber, making its insulation performance and shielding interference performance worse. If a net bag is used to pull a thicker cable for a long time, it is relatively easy to strangle the cable rubber, damage the insulation layer, and cause a cable short circuit.

[0004] As with the technical solution disclosed in the publication (announcement) number CN115000897B, entitled A Cable Installation Bracket, the existing cable installation brackets are mostly used to simultaneously fix multiple cables of the same cable group by squeezing multiple cables at the same time with a clamp. It is common that the tightness of multiple cables being squeezed and fixed differs greatly, resulting in a large difference in their ability to resist sliding due to their own weight and / or external interference, which has become an urgent problem to be solved, so as to avoid the situation where one or more cables are prone to excessive sliding due to poor consistency in cable fixing effect, causing damage to the unit. Summary of the invention

[0005] A cable installation bracket provided by the present invention aims to solve the problem that the clamping state of multiple cables on the installation bracket is uneven and some cables are relatively prone to excessive sliding down by optimizing the combined fixing structure between the installation bracket and the cable. At the same time, it also overcomes the problem that the rubber layer of the cable is easily damaged when the cable slides down a large amount relative to the installation bracket, thereby achieving a firm and reliable clamping effect for multiple cables arranged on the installation bracket at the same time.

[0006] The technical solution adopted by the present invention to solve the technical problem is: a cable installation bracket, comprising a base plate, a cover plate and a plurality of clamping components. The base plate is provided with a plurality of assembly holes, and the cover plate is provided with a plurality of through holes. After the cover plate is fixed to the base plate, the assembly holes correspond to the through holes one by one, and are directly opposite to each other up and down.

[0007] The clamping assembly matches the assembly hole cavity one by one and comprises an inner sleeve, an outer sleeve and a second screw ring.

[0008] A plurality of pressure arms are formed on the upper part of the cylinder body of the inner sleeve and are distributed alternately around the circumference. The cylinder body is matched with the assembly cavity and the cylinder body is fixedly connected with the bottom plate.

[0009] The pressure arm extends upward in the vertical direction relative to the cylinder body and tilts outward in the radial direction, so that the inner and outer side surfaces of the pressure arm are respectively formed into an inner wedge surface and an outer wedge surface. In this way, the inner wedge surfaces on the multiple pressure arms are distributed on the same conical surface / conical ring cavity; at the same time, the outer wedge surfaces on the multiple pressure arms are also distributed on the same conical surface / conical ring surface. Therefore, the inner wedge surface and the outer wedge surface are both arc-shaped curved surfaces. In addition, a rubber pad is fixedly provided on the upper part of the inner wedge surface.

[0010] The lower end of the outer sleeve passes through the through hole and extends toward the upper end surface of the bottom plate, and the upper end extends upward to the outside of the through hole. A tapered hole with a conical end facing downward is formed at the lower part of the barrel cavity of the outer sleeve. An outer thread surface corresponding to and matching the second spiral ring is formed on the upper part of the outer peripheral surface of the outer sleeve, so that the second spiral ring is fixedly connected to a section of the outer sleeve extending above the through hole through a threaded structure.

[0011] The outer diameter of the second spiral ring is larger than the inner diameter of the through hole. The outer sleeve can be pulled upwards to move in the vertical direction by screwing the second spiral ring, so as to cause the upper end of the outer sleeve to continuously extend upwards relative to the through hole on the cover plate.

[0012] After the inner sleeve is placed in the barrel cavity of the outer sleeve, the lower part of the pressure arm can extend into the tapered hole, and a profile contact matching relationship can be formed between the outer wedge surface and the inner wall of the tapered hole. When the outer sleeve moves upward relative to the cover plate, it also moves upward relative to the inner sleeve. During this period, the upper end of the tapered hole will gradually approach the upper end of the pressure arm, so that the inner wall of the tapered hole can press the pressure arm to move closer to the axis of the inner sleeve, and the inner diameter of the tapered ring cavity formed by multiple inner wedge surfaces connected in series around the circumferential direction will gradually decrease.

[0013] Optionally, the clamping assembly further comprises a first spiral ring. An internal threaded surface is formed at the upper end of the second axial hole of the first spiral ring. The second axial hole can be set as a light column hole and can ensure that the cable passes through. A radial flange is formed at the lower part of the outer peripheral surface of the first spiral ring. The outer diameter of the radial flange is larger than the inner diameter of the lower port of the assembly cavity.

[0014] The lower part of the outer peripheral surface of the barrel body is formed with an external thread section. The upper end of the first spiral ring extends into the assembly hole and matches with the external thread section to fix the barrel body and the bottom plate together, so that the first spiral ring can prevent the inner sleeve from moving upward relative to the bottom plate.

[0015] The axial hole 1 on the cylinder body can be connected with the axial hole 2 on the first screw ring to form a hole cavity that penetrates in the vertical direction, thereby forming a part of the channel set on the clamping component for the cable to pass through.

[0016] Optionally, the clamping assembly further comprises a barrel cap. An internal thread countersunk hole is formed on the bottom surface of the cap cavity of the barrel cap, and an axial through hole for the cable to pass through is formed on the bottom wall of the internal thread countersunk hole. An elastic ring is fixedly embedded on the inner wall of the axial through hole. The second screw ring can extend into the cap cavity, and the internal thread countersunk hole can match the external thread surface, so that the barrel cap and the outer sleeve are fixedly connected as a whole.

[0017] Optionally, an elastic deformation part is formed at the root of the pressure arm. The elastic deformation part can cause the pressure arm to produce elastic deformation at its root, which reduces the resistance when the pressure arm is pushed to move, and can relatively easily adjust the rubber pad to a state of full contact with the rubber of the cable, which helps to improve the contact effect between the pressure arm and the cable, improve the distribution of the radial pressure of the pressure arm on the cable, and can improve the stability of the clamping and fixing effect, and better inhibit the cable from sliding down.

[0018] Optionally, a strip groove is formed on the inner wedge surface. One end surface of the rubber pad is fixed in the strip groove, and the other end surface protrudes / exposed outward relative to the inner wedge surface, ensuring that the rubber pad and the cable can generate appropriate elastic deformation during the process of pressing and contacting.

[0019] In the present invention, the rubber pad is preferably made to have good rigidity in the axial direction, strong supporting capacity, and relatively easy to undergo appropriate elastic deformation in the radial direction. To this end, grooves and rib structures that can improve its supporting rigidity in the axial direction and not adversely affect its elastic deformation in the radial direction can be distributed on the end surface of the rubber pad facing the cable.

[0020] Optionally, an annular flange is formed on the end surface of the cover plate facing the bottom plate and corresponding to the periphery of the lower end of the through hole. The inner diameter of the annular flange is not less than the inner diameter of the through hole.

[0021] An axial flange is formed on the lower end surface of the outer sleeve. The inner diameter of the axial flange is larger than the inner diameter of the upper port of the assembly cavity. An annular recessed groove is formed on the bottom plate and corresponds to the outer periphery of the upper port of the assembly cavity. The lower end of the axial flange can be kept in a state of being inserted into the annular recessed groove.

[0022] Optionally, a shaft shoulder is formed at the lower part of the outer peripheral surface of the outer sleeve. The outer diameter at the root of the shaft shoulder is not less than the outer diameter of the axial flange. The inner diameter of the annular flange is greater than the inner diameter of the through hole.

[0023] An elastic member is mounted on the lower part of the outer sleeve, and the elastic member is placed in the annular flange, and the upper and lower ends of the elastic member are respectively in contact with the end surface of the shaft shoulder and the upper end surface of the bottom plate. The elastic member can be a spring or an elastic sleeve.

[0024] After the cover plate is fixed on the bottom plate, the elastic member can be kept in a compressed state, and the elastic member can exert an elastic thrust on the shaft shoulder portion to keep the outer sleeve in a state of pushing upward.

[0025] Optionally, a plurality of radial slots are arranged at intervals around the circumferential direction on the upper end surface of the second spiral ring. The clamping assembly also includes a wrench corresponding to the second spiral ring. The wrench includes an arc-shaped arm, a plurality of protruding teeth arranged on the concave surface of the arc-shaped arm, and a handle fixed on the arc-shaped arm.

[0026] When the concave surface of the arc-shaped arm is close to the side wall of the second spiral ring, the multiple protruding teeth can be respectively inserted into the multiple radial slots.

[0027] The beneficial effects of the present invention are as follows: the cable installation bracket provided by the present invention can effectively ensure that each cable can firmly and reliably maintain a relatively fixed state with the installation bracket by improving the fixed combination structure between the bracket and the cable, which not only overcomes the problem of inconsistent and uneven clamping and fixing conditions of multiple cables matched with the installation bracket, but also effectively overcomes the problem that some cables are prone to sliding down relative to the bracket, and the problem that the bracket is prone to damage the rubber of the cable during the sliding of the cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the use state of the present invention.

[0029] Figure 2 It is a schematic diagram of the cross-sectional structure when the base plate, cover plate and clamping assembly are matched.

[0030] Figure 3 It is a schematic diagram of the cross-sectional structure of the inner sleeve.

[0031] Figure 4 It is a schematic diagram of the top view of the structure of the inner sleeve.

[0032] Figure 5 It is a schematic diagram of the cross-sectional structure of the outer sleeve.

[0033] Figure 6 It is a schematic diagram of the top view of the outer sleeve.

[0034] Figure 7It is a schematic diagram of the structure when the cable and the clamping assembly are matched.

[0035] Figure 8 A schematic diagram of the split structure of the clamping assembly.

[0036] Fig. 9 A schematic diagram of the structure of the base plate from a top view.

[0037] Fig.10 It is a schematic diagram of the top view of the structure when the second screw ring is matched with the configured wrench.

[0038] In the figure: 100 cable; 10 bottom plate, 11 assembly hole cavity, 111 annular countersunk groove, 12 flange plate, 13 vertical plate, 14 threaded hole; 20 cover plate, 21 through hole, 22 annular flange; 30 inner sleeve, 31 cylinder body, 311 shaft hole one, 312 external thread section, 32 pressure arm, 321 external wedge surface, 322 internal wedge surface, 323 elastic deformation part, 33 rubber pad; 40 first spiral ring, 41 shaft hole two, 42 internal thread surface, 43 radial flange; 50 outer sleeve, 51 tapered hole, 52 external thread surface, 53 axial flange, 54 shaft shoulder, 55 spring; 60 second spiral ring, 61 radial slot, 62 wrench, 621 arc arm, 622 protruding tooth, 623 handle; 70 cylinder cap, 71 cap cavity, 72 internal thread countersunk hole, 73 elastic ring. DETAILED DESCRIPTION

[0039] The structures, proportions, sizes, etc. illustrated in the drawings of the specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention, so they have no substantial technical significance. Any modification of the structure, change of the proportion relationship or adjustment of the size, without affecting the effects and purposes that can be achieved by the present invention, should still fall within the scope of the technical contents disclosed by the present invention. At the same time, the terms such as "upper", "lower", "front", "back", "middle" and so on quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the present invention. The change or adjustment of their relative relationship should also be regarded as the scope of the implementation of the present invention without substantially changing the technical contents.

[0040] like Figures 1 to 9 A cable installation bracket is shown, which comprises a base plate 10, a cover plate 20 and a plurality of clamping components. The clamping components comprise an inner sleeve 30, a first screw ring 40, an outer sleeve 50, a second screw ring 60 and a sleeve cap 70.

[0041] A plurality of assembly holes 11 are distributed on the bottom plate 10 , and a plurality of through holes 21 are distributed on the cover plate 20 .

[0042] After the cover plate 20 is fixed on the base plate 10, the assembly holes 11 and the through holes 21 are matched one by one and are in a one-to-one vertically facing relationship. Fig. 9 As shown, the bottom plate 10 is provided with a plurality of threaded holes 14, each of which is provided with a bolt or a stud, and the cover plate 20 is fixed to the upper part of the bottom plate 10 by the bolt or the stud, and the two are connected as a whole. The bottom plate 10 is fixedly connected to the external component, so that the cable installation bracket is fixed at a high place.

[0043] A flange plate 12 is formed on the outer side of the bottom plate 10, and the bottom plate 10 is fixed to an external facility or component by means of the flange plate 12, and the bottom plate 10 can be kept in a horizontal state. The specific connection structure between the bottom plate 10 and the external facility or component can be flexibly set by those skilled in the art with reference to the prior art and according to the actual conditions of the construction site, which does not belong to the technical innovation part of the present invention, and is therefore not described in detail in the present invention.

[0044] A plurality of pairs of upright plates 13 may be arranged on the upper end surface of the bottom plate 10, and the two pairs of upright plates 13 are arranged to be opposite to each other left and right or front and back, and close to the edge of the bottom plate 10. After the cover plate 20 is placed on the upper part of the bottom plate 10, at least the lower part of the side wall of the cover plate 20 can be clamped between the upright plates 13. The upright plates 13 can improve the fixed connection structure between the cover plate 20 and the bottom plate 10, the ability to resist lateral shear force, and the lateral rigidity and strength of the entire mounting bracket can be improved.

[0045] The clamping assembly matches the assembly hole 11 one by one. When the cable 100 passes through the assembly hole 11 and the through hole 21 in the vertical direction, it passes through the vertical cavity formed on the clamping assembly. With the help of the clamping assembly, the cable 100 is connected with the bottom plate 10 and the cover plate 20 to form a whole, so as to achieve the technical purpose of clamping and fixing the cable group and preventing each cable 100 in the cable group from sliding down, such as Figure 1 , Figure 7 shown.

[0046] Eight pressure arms 32 are arranged alternately around the circumference on the upper part of the barrel body 31 of the inner sleeve 30. After the barrel body 31 extends into the assembly cavity 11 and matches with the assembly cavity 11, the barrel body 31 can be fixedly connected with the bottom plate 10.

[0047] The barrel body 31 can be directly fixedly connected to the assembly cavity 11 through a threaded structure. Figures 1 to 8As shown, the barrel body 31 is fixedly restricted in the assembly hole 11 by the first screw ring 40. Specifically, an external thread section 312 is formed at the lower part of the outer circumferential surface of the barrel body 31, and after the upper end of the first screw ring 40 extends into the assembly hole 11, it matches with the external thread section 312. At the same time, a radial flange 43 is formed at the lower part of the outer circumferential surface of the first screw ring 40, and the outer diameter of the radial flange 43 is larger than the inner diameter of the lower port of the assembly hole 11. After the internal thread surface 42 formed at the upper port of the first screw ring 40 is matched and connected with the external thread section 312, the inner sleeve 30 can be prevented from moving upward relative to the bottom plate 10 and the cover plate 20, and the barrel body 31 is fixedly restricted in the assembly hole 11.

[0048] The inner diameter of the axial hole 1 311 on the barrel body 31 is consistent with the inner diameter of the axial hole 2 41 on the first screw ring 40, and it is preferred that the axial hole 1 311 is a light column hole, and the axial hole 2 41 is a light column hole. The axial hole 1 311 on the barrel body 31 and the axial hole 2 41 on the first screw ring 40 can be connected to form a hole / cavity that passes through in the vertical direction. During the installation operation, the cable 100 can smoothly pass through the axial hole 1 311 and the axial hole 2 41 and extend in the vertical direction. Obviously, the inner diameter of the inner thread surface 42 is larger than the inner diameter of the axial hole 2 41.

[0049] The pressure arm 32 extends upward in the vertical direction relative to the barrel body 31 and tilts radially outward, that is, the pressure arm 32 extends vertically upward and tilts outward relative to the barrel body 31. The inner and outer side surfaces of the pressure arm 32 are respectively formed as an inner wedge surface 322 and an outer wedge surface 321, and multiple inner wedge surfaces 322 are distributed on the same conical annular surface, and multiple outer wedge surfaces 321 are distributed on the same conical annular surface. The length and number of the pressure arm 32 need to be reasonably designed according to the weight, outer diameter, material, etc. corresponding to the model of the cable 100.

[0050] From the description that the multiple inner wedge surfaces 322 are distributed on the same conical annular surface (i.e., conical cylindrical surface), and the multiple outer wedge surfaces 321 are distributed on the same conical annular surface (i.e., conical cylindrical surface), it can be known that the radial cross-sections (projections) of the inner wedge surface 322 and the outer wedge surface 321 are both arc-shaped, and are inclined radially outward relative to the axis in the axial extension direction. Therefore, the inner wedge surface 322 and the outer wedge surface 321 are both arc-shaped curved surfaces. In other words, it can be understood that by setting multiple grooves alternately around the circumferential direction on the conical ring body, and extending the grooves along the axial direction, multiple pressure arms 32 can be obtained by dividing the conical ring body, and then the inner wedge surface 322 on the pressure arm 32 is the part on the inner circumferential surface of the conical ring body; the outer wedge surface 321 on the pressure arm 32 is the part on the outer circumferential surface of the conical ring body.

[0051] A rubber pad 33 is fixedly provided on the upper part of the inner wedge surface 322. The rubber pad 33 can be made of a material such as rubber that has anti-slip, wear-resistant, insulating properties, and can produce elastic deformation. The thickness of the rubber pad 33 generally does not exceed 15 mm, and is preferably controlled within the range of 4 mm to 8 mm. A strip groove can be provided on the inner wedge surface 322, and one end face of the rubber pad 33 is fixedly connected to the strip groove, and the other end face protrudes outward relative to the inner wedge surface 322, and the end face of the rubber pad 33 that protrudes outward relative to the inner wedge surface 322 can contact the rubber of the cable 100. When a strip groove is provided, the thickness of the rubber pad 33 needs to be increased, and the thickness can be controlled to be no more than 20 mm.

[0052] By providing the strip groove and fixing one end face of the rubber pad 33 in the strip groove and protruding the other end face to the outside, the stability of the fixed position of the rubber pad 33 on the pressure arm 32 can be increased, and the rigidity of the rubber pad 33 in the axial direction can be improved, so that the rubber pad 33 is not prone to excessive (axial) slippage relative to the inner wedge surface 322 when subjected to the downward pulling force from the cable 100.

[0053] The lower end of the outer sleeve 50 passes through the through hole 21 and extends toward the upper end surface of the bottom plate 10, and the upper end extends outside the through hole 21. A tapered hole 51 with a conical end facing downward is formed at the lower part of the barrel cavity of the outer sleeve 50. An outer thread surface 52 corresponding to and matching the second spiral ring 60 is formed on the upper part of the outer peripheral surface of the outer sleeve 50. The outer diameter of the second spiral ring 60 is larger than the inner diameter of the through hole 21.

[0054] After the inner sleeve 30 is placed in the barrel cavity of the outer sleeve 50, the lower part of the pressure arm 32 can extend into the tapered hole 51 and form a profile contact matching relationship between the outer wedge surface 321 and the inner wall of the tapered hole 51. When the second screw ring 60 is screwed to drive the outer sleeve 50 to move upward relative to the cover plate 20, the outer sleeve 50 will also move upward relative to the inner sleeve 30, and the upper end of the tapered hole 51 can be pushed gradually toward the upper end / free end of the pressure arm 32. During this period, the tapered hole 51 can push each pressure arm 32 to move closer to the axis (of the inner sleeve 30) at the same time, so that the inner diameter of the tapered annular surface where each inner wedge surface 322 is distributed gradually becomes smaller.

[0055] After the cable 100 passes through the inner sleeve 30, it is extended in the vertical direction. When the pressing arms 32 move toward the axis of the inner sleeve 30, the inclination angle of each pressing arm 32 relative to the vertical direction gradually decreases, which can force the rubber pad 33 to press against the rubber of the cable 100, and finally make the rubber pad 33 and the rubber of the cable 100 tightly pressed and contacted, and a large contact area can be formed between the pressing arms 32 and the rubber of the cable 100, and a large static friction resistance is generated, so that the cable 100 is tightly held in the inner sleeve 30.

[0056] The clamping assembly designed in the present invention clamps the cable 100 by holding the cable 100 with its multiple pressure arms 32. Compared with the existing clamping plate fixing method, it is easier to adjust and tighten the holding force formed by each clamping assembly on the cable 100, and when the clamping state of each clamping assembly is adjusted and controlled one by one, the clamping assemblies will not affect each other, and can be independently adjusted, which is convenient for installation and maintenance.

[0057] In the present invention, the contact between the inner sleeve 30 and the cable 100 is a soft surface contact, which is not easy to cause damage to the rubber of the cable 100; the rubber pad 33 fixed on the pressure arm 32 directly contacts the rubber of the cable 100, and the rubber pad 33 will produce a certain degree of elastic deformation when hugging the cable 100, so that a larger contact surface can be established between the pressure arm 32 and the cable 100, and radial pressure can be formed and stably maintained, thereby significantly improving the static friction resistance between the inner sleeve 30 and the rubber of the cable 100, and ensuring the stability and reliability of the static friction resistance, so as to achieve the purpose of effectively suppressing the cable 100 from sliding downward relative to the mounting bracket. It can effectively prevent the cable 100 from sliding down excessively relative to the mounting bracket. In addition, in the scheme of the present invention, at the position where the mounting bracket and the cable 100 are fixedly combined, each cable 100 is individually matched with a clamping component / an inner sleeve 30. Compared with the existing mounting bracket that clamps multiple cables 100 at the same time, it can better ensure the fixing effect of each cable 100, help to improve the consistency of the fixing effect of the mounting bracket on the multiple cables 100 arranged thereon, and can effectively prevent unit equipment failure caused by excessive sliding of some cables 100, such as damage to twisted cables, generator connection joints, etc., so the operating safety of the unit can be improved.

[0058] In order to enable the pressure arm 32 to change its tilt angle relatively easily relative to the vertical direction, and to avoid the pressure arm 32 from breaking or generating excessive stress inside, an elastic deformation portion 323 is formed at the root of the pressure arm 32. The setting of the elastic deformation portion 323 enables the pressure arm 32 to easily generate elastic deformation at its root, which helps to reduce the resistance of screwing the second screw ring 60 to cause the outer sleeve 50 to move upward relative to the inner sleeve 30, reduce the difficulty of assembly, and ensure that the pressure arm 32 can fully approach the axis of the inner sleeve 30, so that the rubber pad 33 and the outer wall surface of the cable 100 are adjusted to a state of full contact.

[0059] An internal thread counterbore 72 is formed on the bottom surface of the cap cavity 71 of the barrel cap 70, and an axial through hole for the cable 100 to pass through is formed on the bottom wall of the internal thread counterbore 72. An elastic ring 73 is fixedly embedded on the inner wall of the axial through hole. When the cable 100 passes through the axial through hole, the outer wall of the cable 100 can contact the elastic ring 73, and a sealing structure is formed between the relative circumferences of the two to protect the rubber pad 33 from being eroded by rainwater.

[0060] The second screw ring 60 can extend into the cap cavity 71, and the internal thread counterbore 72 can match the external thread surface 52, so that the barrel cap 70 and the outer sleeve 50 are fixedly connected as a whole.

[0061] By setting the barrel cap 70, on the one hand, the corresponding matching position between the cable 100 and the upper part of the clamping assembly can be sealed, and the contact surface between the rubber pad 33 and the cable 100 can be protected; on the other hand, the outer sleeve 50 can be locked, so that the clamping assembly can still effectively maintain its limiting effect on the state of the inner sleeve 30 after being subjected to vibration for a long time, which helps to improve the stability and reliability of the clamping and fixing effect of the clamping assembly on the cable 100. It should be noted that after the internal thread countersunk hole 72 is set, the axial extension length of the external thread surface 52 needs to be appropriately lengthened to ensure that after the second screw ring 60 pulls the outer sleeve 50 to move upward for a sufficient stroke, the upper end of the external thread surface 52 can partially extend above the second screw ring 60, so that the extended part of the external thread surface 52 matches the internal thread countersunk hole 72.

[0062] An annular flange 22 is formed on the end surface of the cover plate 20 facing the base plate 10 and corresponding to the outer periphery of the lower end of the through hole 21. The inner diameter of the annular flange 22 is not less than the inner diameter of the through hole 21. By providing the annular flange 22 and making the annular flange 22 contact with the upper end surface of the base plate 10, the cover plate 20 is supported and fixed relatively above the base plate 10. On the one hand, the stability and reliability of the relative fixed position of the cover plate 20 and the base plate 10 in the vertical direction can be ensured, and the cover plate 20 has sufficient supporting strength and will not be deformed or misaligned under pressure; on the other hand, the thickness of the base plate 10 and / or the thickness of the cover plate 20 can be reduced, so that the overall weight of the mounting bracket is significantly reduced.

[0063] An axial flange 53 is formed on the lower end surface of the outer sleeve 50. The inner diameter of the axial flange 53 is larger than the inner diameter of the upper end of the assembly cavity 11. An annular recessed groove 111 is formed on the bottom plate 10 and corresponds to the outer periphery of the upper end of the assembly cavity 11. The lower end of the axial flange 53 can be kept in a state of being inserted into the annular recessed groove 111. By providing the axial flange 53 on the outer sleeve 50 and making the axial flange 53 always partially kept in a state of being inserted into the annular recessed groove 111, the ability of the mounting bracket to resist lateral loads can be improved.

[0064] like Figure 8 As shown, a shaft shoulder 54 is formed at the lower portion of the outer peripheral surface of the outer sleeve 50. The outer diameter of the shaft shoulder 54 at the root is consistent with the outer diameter of the axial flange 53. The inner diameter of the annular flange 22 is greater than the inner diameter of the through hole 21.

[0065] A spring 55 (i.e., an elastic member) is mounted on the lower portion of the outer sleeve 50, and the spring 55 can be placed in the annular flange 22, and the two ends of the spring 55 are respectively in contact with the end surface of the shaft shoulder 54 and the upper end surface of the bottom plate 10. After the cover plate 20 is fixed to the bottom plate 10, the spring 55 can be kept in a compressed state, and the spring 55 can exert an elastic thrust upward in the vertical direction on the shaft shoulder 54.

[0066] During installation, generally, it is only necessary to pre-connect the bottom plate 10 and the cover plate 20 in the early stage. After the outer sleeve 50 is fully moved upward so that the pressing arm 32 fully holds the cable 100, the connection between the bottom plate 10 and the cover plate 20 is tightened to make the cover plate 20 tightly pressed on the bottom plate 10. Then, it is necessary to adjust the position of the second screw ring 60 so that the second screw ring 60 is pressed on the upper end surface of the cover plate 20.

[0067] After the spring 55 (or the elastic member) is provided, an upward elastic thrust can be maintained on the outer sleeve 50, which can cause the outer sleeve 50 to have an upward movement tendency (elastic kinetic energy). When the cable 100 is shaken or swung by external factors, the downward force of the cable 100 on the inner sleeve 30 will fluctuate, during which the elastic thrust of the spring 55 can follow the change, and with its damping characteristics, the influence of the fluctuating downward force on the state of the inner sleeve 30 can be reduced, so that the vibration intensity transmitted to the mounting bracket and the clamping assembly is attenuated, playing a damping and anti-vibration role, thereby helping to improve the stability and reliability of the clamping assembly's fixing effect on the cable 100.

[0068] like Fig.10 As shown, a plurality of radial slots 61 are arranged alternately around the circumferential direction on the upper end surface of the second spiral ring 60. The clamping assembly also includes a wrench 62 corresponding to the second spiral ring 60. The wrench 62 includes an arc-shaped arm 621, three protruding teeth 622 arranged on the concave surface of the arc-shaped arm 621, and a handle 623 fixed on the arc-shaped arm 621. The handle 623 is either a straight handle extending outward relative to the arc-shaped arm 621 (extending obliquely relative to the vertical direction), or an L-shaped handle.

[0069] When the concave surface of the arc-shaped arm 621 leans against the side wall of the second screw ring 60, the three protruding teeth 622 can be respectively inserted into the three radial slots 61. At this time, the second screw ring 60 can be driven to rotate by manipulating the handle 623.

[0070] After the wrench 62 and the radial slot 61 are set, the screwing operation of the second screw ring 60 can be completed conveniently and quickly, so that the second screw ring 60 can fully pull the outer sleeve 50 upward, so that the conical hole 51 on the outer sleeve 50 can fully prompt the pressure arm 32 on the inner sleeve 30 to hold the cable 100 tightly, so that each cable 100 in the cable group can be fully fixed on the mounting bracket.

[0071] After the wrench 62 is set, the final tightening of each clamping component can be achieved conveniently, efficiently and fully during the operation, which can effectively overcome the difficulty of inconveniently tightening the clamping component due to the relatively dense arrangement of the cables 100 in the cable group, and help to fully ensure that the clamping and fixing effect of each clamping component on each cable 100 is finally achieved.

[0072] Both the bottom plate 10 and the cover plate 20 may be plate structures formed by assembling a plurality of strip-shaped bodies. (1) On the strip-shaped bodies assembled into the bottom plate 10, and on the opposite surfaces between two adjacent strip-shaped bodies, a half cavity of the assembly hole cavity 11 (a half cavity cut along the axial direction, the same below) and a half cavity of the annular sink groove 111 are formed. (2) On the strip-shaped bodies assembled into the cover plate 20, and on the opposite surfaces between two adjacent strip-shaped bodies, a half cavity of the through hole 21 and a half ring body of the annular flange 22 are formed. Similarly, the inner sleeve 30, the first spiral ring 40, the outer sleeve 50, the second spiral ring 60, and the barrel cap 70 may all be structural forms composed of two half bodies, or partly be structural forms composed of two half bodies, and the remaining part is an integrated whole. For example, the inner sleeve 30 may be a cylindrical body formed by fixing and assembling two half-cylinder bodies, the first spiral ring 40 may be a ring body formed by fixing and assembling two half-ring bodies, and so on.

[0073] The components and elements involved in the present invention are made of composite materials or non-ferromagnetic metal materials, such as composite materials such as nylon (including modified nylon) and fiber-reinforced plastics; non-ferromagnetic metal materials such as aluminum alloys. The selection of component materials should be based on the standard of avoiding eddy current effects.

[0074] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. The present invention can be improved in many aspects without violating the overall concept, and those familiar with the technology can modify or change the above embodiments without violating the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the technical field without departing from the spirit and technical ideas disclosed by the present invention should still be covered by the claims of the present invention.

Claims

1. A cable installation bracket, characterized in that: It comprises a base plate (10), a cover plate (20) and a plurality of clamping components; A plurality of assembly cavities (11) are distributed on the bottom plate (10), and a plurality of through holes (21) are distributed on the cover plate (20); after the cover plate (20) is fixed on the bottom plate (10), the assembly cavities (11) and the through holes (21) correspond one to one and are relatively matched up and down; The clamping assembly and the assembly cavity (11) are matched one by one; The clamping assembly comprises an inner sleeve (30), an outer sleeve (50) and a second spiral ring (60); A plurality of pressure arms (32) are formed on the upper portion of the barrel body (31) of the inner sleeve (30) and are distributed alternately in a circumferential direction; the barrel body (31) corresponds to and matches the assembly cavity (11), and the barrel body (31) is fixedly connected to the bottom plate (10); the pressure arms (32) extend vertically upward relative to the barrel body (31) and are inclined outwardly in a radial direction; the inner and outer side surfaces of the pressure arms (32) are respectively formed as an inner wedge surface (322) and an outer wedge surface (321); a rubber pad (33) is fixedly provided on the upper portion of the inner wedge surface (322); The lower end of the outer sleeve (50) passes through the through hole (21) and then extends toward the upper end surface of the bottom plate (10), and the upper end extends upward to the outside of the through hole (21); a tapered hole (51) with a tapered end facing downward is formed at the lower part of the barrel cavity of the outer sleeve (50); and an external threaded surface (52) corresponding to and matching the second spiral ring (60) is formed at the upper part of the outer peripheral surface of the outer sleeve (50); The outer diameter of the second spiral ring (60) is greater than the inner diameter of the through hole (21); The inner sleeve (30) is placed in the outer sleeve (50), and the lower part of the pressure arm (32) extends into the tapered hole (51), and a profile contact matching relationship is formed between the outer wedge surface (321) and the inner wall of the tapered hole (51); when the outer sleeve (50) moves upward relative to the inner sleeve (30), the tapered hole (51) can push the pressure arm (32) and move toward the axis of the inner sleeve (30).

2. The cable installation bracket according to claim 1, characterized in that: The clamping assembly further comprises a first spiral ring (40); an internal thread surface (42) is formed at the upper end of the second axial hole (41) of the first spiral ring (40); a radial flange (43) is formed at the lower portion of the outer peripheral surface of the first spiral ring (40); the outer diameter of the radial flange (43) is greater than the inner diameter of the lower end of the assembly cavity (11); An external thread section (312) is formed at the lower portion of the outer peripheral surface of the barrel body (31); the upper end of the first screw ring (40) extends into the assembly cavity (11) and matches the external thread section (312), thereby fixing the barrel body (31) and the bottom plate (10) together.

3. The cable installation bracket according to claim 1, characterized in that: The clamping assembly also includes a barrel cap (70); an internal threaded countersunk hole (72) is formed on the bottom surface of the cap cavity (71) of the barrel cap (70); an axial through hole for the cable (100) to pass through is formed on the bottom wall of the internal threaded countersunk hole (72); an elastic ring (73) is fixedly embedded on the inner wall of the axial through hole; The second screw ring (60) can extend into the cap cavity (71), and the internal thread counterbore (72) can match the external thread surface (52).

4. The cable installation bracket according to claim 1, characterized in that: An elastic deformation portion (323) is formed at the root of the pressing arm (32); the elastic deformation portion (323) can cause the pressing arm (32) to generate elastic deformation at the root thereof.

5. The cable installation bracket according to claim 1, characterized in that: A strip groove is formed on the inner wedge surface (322); one end surface of the rubber pad (33) is fixed in the strip groove, and the other end surface protrudes outward relative to the inner wedge surface (322).

6. The cable installation bracket according to any one of claims 1 to 5, characterized in that: An annular flange (22) is formed on the end surface of the cover plate (20) facing the bottom plate (10) and corresponding to the outer periphery of the lower end of the through hole (21); the inner diameter of the annular flange (22) is not less than the inner diameter of the through hole (21); An axial flange (53) is formed on the lower end surface of the outer sleeve (50); the inner diameter of the axial flange (53) is larger than the inner diameter of the upper end of the assembly cavity (11); an annular recessed groove (111) is formed on the bottom plate (10) at the periphery of the upper end of the assembly cavity (11); and the lower end of the axial flange (53) can be maintained in a state of being inserted into the annular recessed groove (111).

7. The cable installation bracket according to claim 6, characterized in that: A shaft shoulder (54) is formed at the lower portion of the outer peripheral surface of the outer sleeve (50); the outer diameter of the shaft shoulder (54) at the root thereof is not less than the outer diameter of the axial flange (53); and the inner diameter of the annular flange (22) is greater than the inner diameter of the through hole (21); An elastic member is sleeved on the lower part of the outer sleeve (50), and the elastic member is placed in the annular flange (22), and the upper and lower ends of the elastic member are respectively in contact with the end surface of the shaft shoulder (54) and the upper end surface of the bottom plate (10); After the cover plate (20) is fixed on the bottom plate (10), the elastic member can be kept in a compressed state, and the elastic member can exert an elastic thrust upward in the vertical direction on the shaft shoulder portion (54).

8. The cable installation bracket according to claim 1, characterized in that: A plurality of radial slots (61) are arranged at intervals in the circumferential direction on the upper end surface of the second spiral ring (60); the clamping assembly also includes a wrench (62) corresponding to and matching the second spiral ring (60); The wrench (62) comprises an arc-shaped arm (621), a plurality of protruding teeth (622) distributed on a concave surface of the arc-shaped arm (621), and a handle (623) fixed on the arc-shaped arm (621); When the concave surface of the arc-shaped arm (621) is close to the side wall of the second spiral ring (60), the plurality of protruding teeth (622) can be respectively inserted into the plurality of radial slots (61).

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