HDPE (high-density polyethylene) bundling pipe

Abstract

The invention relates to the field of bundling pipes, in particular to an HDPE bundling pipe which comprises an outer protection pipe, a center pipe is arranged in the outer protection pipe, a plurality of micropipes are arranged between the center pipe and the outer protection pipe, gear transmission mechanisms are arranged on the micropipes and the center pipe, repairing mechanisms are fixed to the outer walls of the micropipes, and the top faces of the repairing mechanisms support the inner wall face of the outer protection pipe. Through the arrangement of the gear transmission mechanism and the repairing mechanism, the micropipes in the outer protection pipe are well limited, spaces are reserved between the micropipes and the outer protection pipe, heat dissipation is facilitated, and when the bundling pipe deforms due to the large external impact force, the heat dissipation effect of the bundling pipe is improved, and the service life of the bundling pipe is prolonged. And the repairing mechanism not only can play a role in resisting pressure, but also can repair deformation in time, so that a very good protection role is played on the microtube.

Description

Technical Field

[0001] The invention relates to the field of cluster pipes, in particular to a HDPE cluster pipe. Background Art

[0002] A cluster pipe is a collection of a certain number of micro-tubes. Multiple micro-tubes are wrapped and formed by a 1-3 mm thick HDPE pipe in the factory. Made of HDPE material, it is composed of a porous micro-tube and an outer protective tube layer. The pipe density is high, and the maximum number of pipe holes can be accommodated in the effective space. A variety of hole combinations are provided according to demand. When the network is upgraded, the micro cable can be blown in and out of any single micro-tube.

[0003] The patent with application number CN202023005282.4 discloses a cluster tube. Although the cluster tube can play a certain guiding and clamping role and reduce the twisting and entanglement of microtubes, the cluster tube still has the following disadvantages: 1) Although the cluster tube is provided with a partition strip, there is still a certain activity space for the microtubes in the protective tube, and the microtubes cannot be limited 100%; 2) When the cluster tube is impacted by a large external force, the protective tube will deform to a certain extent, such as different degrees of depression. If the deformation on the protective tube is not repaired in time, it will have a great impact on the microtubes in the protective tube and the microcables in the microtubes; 3) The microtubes in the cluster tube are squeezed together. The squeezed microtubes will deform to a certain extent due to the squeezing force between each other. This is not conducive to the blowing of microcables on the one hand, and it is also very unfavorable for heat dissipation on the other hand. Summary of the invention

[0004] 1. Technical issues to be solved

[0005] In view of the deficiencies in the prior art, the present invention aims to provide a HDPE cluster tube that solves the problems existing in the prior art. The present invention not only limits the microtubes in the outer protective tube well through the setting of a gear transmission mechanism and a repair mechanism, but also leaves space between the microtubes and between the microtubes and the outer protective tube to facilitate heat dissipation. When the cluster tube is deformed by a large external impact force, the repair mechanism can not only play a role in resisting pressure, but also can repair the deformation in time, thereby playing a good protective role for the microtubes.

[0006] (II) Technical solution

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an HDPE cluster tube, comprising an outer protective tube, a central tube is arranged inside the outer protective tube, a plurality of micro tubes are arranged between the central tube and the outer protective tube, a gear transmission mechanism is arranged on the micro tube and the central tube, a repair mechanism is fixed on the outer wall of the micro tube, and the top surface of the repair mechanism supports the inner wall surface of the outer protective tube.

[0008] Preferably, the gear transmission mechanism includes a first gear fixed at the middle position of the central tube. The first gear meshes with several groups of gear sets. Each group of gear sets includes a second gear meshing with the first gear, and the second gear meshes with a third gear. A microtube is fixedly penetrated through both the first gear and the second gear. A rotating structure is provided at one end of the central tube.

[0009] Preferably, the rotating structure includes an end cap detachably connected to one end of the outer protection tube. A first through hole matching the size and position of the microtube is provided on the end cap. A second through hole matching the size and position of the central tube is provided on the end cap. One end of the central tube passes through the second through hole, and a handle or a micro motor is fixed on the end of the central tube passing through the second through hole.

[0010] Preferably, the repair mechanism includes a first arc-shaped block fixed to the microtube. The first arc-shaped block is connected to a second arc-shaped block through an elastic structure. A flexible shield is fixed between the same-side ends of the first arc-shaped block and the second arc-shaped block.

[0011] Preferably, the elastic structure is several springs arranged between the first arc-shaped block and the second arc-shaped block.

[0012] Preferably, first air bags are provided on both the left and right sides of the spring. The bottom surface of the first air bag is fixed on the inner wall surface of the first arc-shaped block, and the top surface of the first air bag is fixed on the inner wall surface of the second arc-shaped block.

[0013] Preferably, a second air bag is wound around the outer wall of the microtube provided with the first gear. The second air bag is provided with a first fixing part, a second fixing part, a third fixing part, and a fourth fixing part. Both the second fixing part and the third fixing part are fixed on the inner wall of the first arc-shaped block corresponding to the microtube provided with the first gear. The first fixing part and the second fixing part are respectively fixed on the inner walls of the first arc-shaped blocks on both sides of the microtube provided with the first gear.

[0014] Preferably, the second air bag is filled with a flame retardant powder.

[0015] Preferably, thorn blocks are fixed at both ends of the first arc-shaped block.

[0016] Preferably, the central tube is arranged as a hollow aluminum tube.

[0017] (III) Beneficial effects

[0018] 1. With the provision of the repair mechanism in the present invention, when an impact force acts on the outer protection tube part above the repair mechanism, since the repair mechanism is composed of a first arc-shaped block, a second arc-shaped block and an elastic structure, the elastic structure between the first arc-shaped block and the second arc-shaped block will play a very good buffering role against external impacts, preventing direct impact on the microtube and causing deformation and damage to the microtube; when the impact force acts on the outer protection tube part between two adjacent repair mechanisms, the part of the outer protection tube below this part is prone to depression and deformation due to lack of support. If the depressed and deformed part is not repaired in time, it will cause extrusion and damage to the microtube, and then have an adverse impact on the overall bundle tube. When it is necessary to repair the depression and deformation on the outer protection tube, the central tube is driven to rotate forward and backward by a certain amplitude through the rotating structure. Among them, the forward and backward rotation of the central tube alternates. The rotation of the central tube will drive the second gear meshing with the first gear on the central tube to rotate, and then drive the third gear meshing with the second gear to rotate, and then drive the microtube fixed to the second gear and the third gear to rotate, and then drive the repair mechanism on the microtube to rotate to repair the depression and deformation on the outer protection tube; before the repair mechanism rotates, the elastic structure is in a compressed state, pressing the second arc-shaped block against the inner wall of the outer protection tube. When the microtube rotates, it drives the first arc-shaped block to rotate, and then drives the elastic structure and the second arc-shaped block to rotate. Due to the setting of the elastic structure, on the one hand, when the microtube rotates forward or backward, the second arc-shaped block can always be pressed against the inner wall of the outer protection tube, and then the depressed and deformed part on the outer protection tube is repaired, that is, the depressed and deformed part is pushed outwards to restore its original shape; on the other hand, during the process of the repair mechanism turning to the position that needs to be repaired, since the distance between the first arc-shaped block and the second arc-shaped block is increasing, the elastic structure will have an instantaneous impact force on the second arc-shaped block, that is, the second arc-shaped block is pushed upwards, and the second arc-shaped block will have an outward impact force on the depressed and deformed part on the outer protection tube, bouncing the depressed and deformed part outwards, which is convenient for repairing the depressed and deformed part. In this way, the effect and efficiency of repairing the depressed and deformed part are greatly increased; in addition, due to the special structure of the gear transmission mechanism, the second gear and the third gear on both sides of the depressed and deformed part on the outer protection tube either rotate towards each other or away from each other, so that the repair mechanisms on the second gear and the third gear either approach each other at the same time or move away from each other at the same time, so that the repair of the depressed and deformed part is more comprehensive and the repair efficiency is also greatly improved. During the process of the second gear and the third gear moving away from each other, the part that needs to be repaired will be pulled, greatly improving the repair effect;There is no micro-cable inside the central tube, which remains in a hollow state. Through the setting of the gear transmission mechanism, there is a certain gap between the micro-tubes and between the micro-tubes and the central tube, and the micro-tubes and the central tube are well-positioned. In this way, there will be no mutual extrusion between the micro-tubes and between the micro-tubes and the central tube, and there will be no deformation of the micro-tubes and the central tube, which is convenient for the blowing-in of the micro-cable. At the same time, the heat dissipation effect is greatly increased, and thus the safety of using the multi-tube is greatly increased.

[0019] 2. Through the setting of the first airbag in the present invention, a good limiting and blocking effect is exerted on the spring, avoiding the dislocation between the first arc-shaped block and the second arc-shaped block when the micro-tube drives the repair mechanism to rotate. The first airbag not only has good telescopic function, but also plays a good limiting role on the spring, avoiding the torsion of the spring when the repair mechanism rotates and thus affecting the rotation of the second arc-shaped block, and further avoiding affecting the smooth repair of the sunken and deformed part on the outer protection tube.

[0020] 3. Through the setting of the second airbag in the present invention, the gaps between the micro-tubes and between the micro-tubes and the central tube are filled. When the multi-tube is impacted by the outside world, not only the buffering effect is greatly enhanced, but also a good protection effect is exerted on the gear transmission mechanism. In addition, for the second airbag of this structure, during the process of the repair mechanism repairing the sunken and deformed part on the outer protection tube, the gas in the second airbag will be squeezed from one end to the other end. In this way, the end of the second airbag filled with gas will produce a certain extrusion on the inner wall of the outer protection tube, enhancing the repair efficiency and effect on the sunken and deformed part to a certain extent.

[0021] 4. In the present invention, a flame retardant powder is filled in the second airbag, and thorn blocks are fixed at both ends of the first arc-shaped block. In this way, when the temperature of the multi-tube is high to the preset dangerous threshold, the micro-motor will start. The micro-motor rotates within the repair range through a certain number of forward and reverse rotations. At this time, the thorn blocks cannot pierce the second airbag. This process mainly plays a role in pre-dispersing the flame retardant powder in the second airbag. After that, the rotation range of the micro-motor will exceed the repair range until the thorn blocks pierce the second airbag. Since the pre-dispersed flame retardant powder will be sprayed out instantly when pierced by the thorn blocks, the amount of the flame retardant powder sprayed out is more, and the spraying range is wider, thus playing a good flame retardant effect on the multi-tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is the overall schematic diagram of the present invention.

[0023] Figure 2 is for the present invention Figure 1 schematic diagram after removing the outer protection tube.

[0024] Figure 3 Schematic diagram of the outer protection tube, the first gear and the gear set of the present invention.

[0025] Figure 4 Schematic diagram of the outer protection tube, the first gear, the second gear and the third gear of the present invention.

[0026] Figure 5 For the present invention Figure 1 Schematic diagram after adding the rotating structure.

[0027] Figure 6 Schematic diagram of the central tube and the rotating structure of the present invention.

[0028] Figure 7 For the present invention Figure 6 Schematic diagram after replacing the handle in the present invention with a micro motor.

[0029] Figure 8 Schematic diagram of the repair mechanism of the present invention.

[0030] Figure 9 For the present invention Figure 8 Schematic diagram after adding the thorn blocks.

[0031] Figure 10 Cross-sectional view of the outer protection tube, the central tube, the micro tube, the repair mechanism and the second airbag of the present invention.

[0032] In the figure: 1 - outer protection tube, 2 - central tube, 3 - micro tube, 4 - gear transmission mechanism, 5 - repair mechanism, 6 - first gear, 7 - gear set, 8 - second gear, 9 - third gear, 10 - rotating structure, 11 - end cover, 12 - first through hole, 13 - second through hole, 14 - handle, 15 - micro motor, 16 - first arc-shaped block, 17 - elastic structure, 18 - second arc-shaped block, 19 - flexible shield, 20 - spring, 21 - first airbag, 22 - second airbag, 23 - first fixing part, 24 - second fixing part, 25 - third fixing part, 26 - fourth fixing part, 27 - thorn block. Specific embodiments

[0033] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the attached Figures 1-10 Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0034] The present invention provides a technical solution: an HDPE bundled tube, which is characterized in that it includes an outer protection tube 1, a central tube 2 is arranged inside the outer protection tube 1, several micro tubes 3 are arranged between the central tube 2 and the outer protection tube 1, a gear transmission mechanism 4 is arranged on the micro tubes 3 and the central tube 2, a repair mechanism 5 is fixed on the outer wall of the micro tube 3, the top surface of the repair mechanism 5 supports the inner wall surface of the outer protection tube 1, the gear transmission mechanism 4 includes a first gear 6 fixed at the middle position of the central tube 2, the first gear 6 meshes with several groups of gear sets 7, each group of gear sets 7 includes a second gear 8 meshing with the first gear 6, the second gear 8 meshes with a third gear 9, the first gear 6 and the second gear 8 both penetrate and fix a micro tube 3, a rotating structure 10 is arranged at one end of the central tube 2, the repair mechanism 5 includes a first arc-shaped block 16 fixed to the micro tube 3, the first arc-shaped block 16 is connected with a second arc-shaped block 18 through an elastic structure 17, a flexible shield 19 is fixed between the same-side ends of the first arc-shaped block 16 and the second arc-shaped block 18. When the outer protection tube 1 is subjected to a large external impact force, there are two cases. The first case is that the impact force acts on the part of the outer protection tube 1 above the repair mechanism 5, and the second case is that the impact force acts on the part of the outer protection tube 1 between two adjacent repair mechanisms 5. When the impact force acts on the part of the outer protection tube 1 above the repair mechanism 5, since the repair mechanism 5 is composed of the first arc-shaped block 16, the second arc-shaped block 18 and the elastic structure 17, the elastic structure 17 between the first arc-shaped block 16 and the second arc-shaped block 18 will play a good buffering role for the external impact, preventing the direct impact on the micro tube 3 and causing deformation and damage of the micro tube 3. When the impact force acts on the part of the outer protection tube 1 between two adjacent repair mechanisms 5, the lower part of this part of the outer protection tube 1 is prone to concave deformation due to lack of support. If the concave deformed part is not repaired in time, it will cause extrusion and damage to the micro tube 3, and then have an adverse impact on the overall bundled tube. When it is necessary to repair the concave deformation on the outer protection tube 1, the central tube 2 is driven to rotate forward and backward by a certain amplitude through the rotating structure 10. Among them, the forward and backward rotation of the central tube 2 alternates. The rotation of the central tube 2 will drive the second gear 8 meshing with the first gear 6 on the central tube 2 to rotate, and then drive the third gear 9 meshing with the second gear 8 to rotate, and then drive the micro tube 3 fixed to the second gear 8 and the third gear 9 to rotate, and then drive the repair mechanism 5 on the micro tube 3 to rotate to repair the concave deformation on the outer protection tube 1. Among them, the repair mechanism 5 is in Figure 2When in the position, the elastic structure 17 is in a compressed state, pressing the second arc-shaped block 18 against the inner wall of the outer protection tube 1. When the microtube 3 rotates, it drives the first arc-shaped block 16 to rotate, and then drives the elastic structure 17 and the second arc-shaped block 18 to rotate. Due to the setting of the elastic structure 17, on the one hand, when the microtube 3 rotates forward or backward, the second arc-shaped block 18 can always be pressed against the inner wall of the outer protection tube 1, thereby repairing the sunken and deformed part on the outer protection tube 1, that is, pushing the sunken and deformed part outwards to restore its original shape. The amplitude and number of forward and reverse rotations of the microtube 3 are set according to actual needs; on the other hand, during the process of the repair mechanism 5 turning to the position that needs to be repaired, since the distance between the first arc-shaped block 16 and the second arc-shaped block 18 is increasing, the elastic structure 17 will have an instantaneous impact force on the second arc-shaped block 18, that is, pushing the second arc-shaped block 18 upwards, and the second arc-shaped block 18 will have an outward impact force on the sunken and deformed part on the outer protection tube 1, popping the sunken and deformed part outwards, which is convenient for repairing the sunken and deformed part. This greatly improves the repair effect and efficiency of the sunken and deformed part; in addition, due to the special structure of the gear transmission mechanism 4, the second gear 8 and the third gear 9 on both sides of the sunken and deformed part on the outer protection tube 1 either rotate towards each other or away from each other, so that the repair mechanisms 9 on the second gear 8 and the third gear 9 either approach each other simultaneously or move away from each other simultaneously, making the repair of the sunken and deformed part more comprehensive and greatly improving the repair efficiency. During the process of the second gear 8 and the third gear 9 moving away from each other, the part that needs to be repaired will be pulled, greatly improving the repair effect. There is no micro-cable in the central tube 2, and it remains in a hollow state. And through the setting of the gear transmission mechanism 4, there is a certain gap between the microtubes 3 and between the microtube 3 and the central tube 2, and good position-limiting is carried out on the microtube 3 and the central tube 2, so that there will be no mutual extrusion between the microtubes 3, between the microtube 3 and the central tube 2, and no deformation of the microtube 3 and the central tube 2, which is convenient for blowing in the micro-cable, and at the same time greatly improves the heat dissipation effect, and thus greatly increases the safety of using the bundle tube.

[0035] The rotating structure 10 includes an end cap 11 detachably connected to one end of the outer protection tube 1. The end cap 11 is provided with a first through hole 12 that matches the size and position of the microtube 3, and the end cap 11 is provided with a second through hole 13 that matches the size and position of the central tube 2. One end of the central tube 2 passes through the second through hole 13, and a handle 14 or a micro-motor 15 is fixed on the end of the central tube 2 that passes through the second through hole 13. These are two specific structures of the rotating structure 10. One is to drive the rotation of the central tube 2 by manually rotating the handle 14, and then to make the microtube 3 rotate; the other way is to automatically drive the central tube 2 to rotate by the micro-motor 15. These two driving methods can be freely selected according to the actual situation.

[0036] The elastic structure 17 is a number of springs 20 arranged between the first arc-shaped block 16 and the second arc-shaped block 18. Setting the elastic structure 17 as the springs 20 not only has the function of stretching and contracting, but also, at the moment when the distance between the first arc-shaped block 16 and the second arc-shaped block 18 increases, makes the instantaneous impact force of the springs 20 on the second arc-shaped block 18 stronger. As a result, the second arc-shaped block 18 pushes the sunken and deformed part on the outer protection tube 1 outwards with greater force, making the repair efficiency and effect of the sunken and deformed part higher and better.

[0037] On both the left and right sides of the spring 20, there are first air bags 21. The bottom surface of the first air bag 21 is fixed on the inner wall surface of the first arc-shaped block 16, and the top surface of the first air bag 21 is fixed on the inner wall surface of the second arc-shaped block 18. The setting of the first air bag 21 plays a very good limiting and blocking role for the spring 20, avoiding the situation of dislocation between the first arc-shaped block 16 and the second arc-shaped block 18 when the microtube 3 drives the repair mechanism 5 to rotate. The first air bag 21 not only has good stretching and contracting functions, but also plays a very good limiting role for the spring 20, avoiding the spring 20 being twisted when the repair mechanism 5 rotates and thus affecting the rotation of the second arc-shaped block 18, and further avoiding affecting the smooth repair of the sunken and deformed part on the outer protection tube 1.

[0038] On the outer wall of the microtube 3 provided with the first gear 6, there is a second air bag 22 wound around it. The second air bag 22 is provided with a first fixing part 23, a second fixing part 24, a third fixing part 25 and a fourth fixing part 26. The second fixing part 24 and the third fixing part 25 are both fixed on the inner wall of the first arc-shaped block 16 corresponding to the microtube 3 provided with the first gear 6, and the first fixing part 23 and the second fixing part 24 are respectively fixed on the inner walls of the first arc-shaped blocks 16 on both sides of the microtube 3 provided with the first gear 6. Through the setting of the second air bag 22, the gaps between the microtubes 3 and the gap between the microtube 3 and the central tube 2 are filled. When the bundle tube is impacted by the outside world, it not only greatly enhances the buffering effect, but also plays a very good protective role for the gear transmission mechanism 4. In addition, for the second air bag 22 of this structure, during the process of the repair mechanism 5 repairing the sunken and deformed part on the outer protection tube 1, the gas in the second air bag 22 will be squeezed from one end to the other end. In this way, the end of the second air bag 22 filled with gas will produce a certain extrusion on the inner wall of the outer protection tube 1, enhancing the repair efficiency and effect of the sunken and deformed part to a certain extent. The positions where the first fixing part 23, the second fixing part 24, the third fixing part 25 and the fourth fixing part 26 are fixed will not hinder the forward and reverse rotation of the repair mechanism 5.

[0039] The second airbag 22 is filled with a flame retardant powder. Filling the flame retardant powder in the second airbag 22 can achieve a good dispersion effect on the flame retardant powder in the second airbag 22 when repairing the dented and deformed part of the external protection tube 1, preventing the caking of the flame retardant powder and affecting the subsequent flame retardant effect.

[0040] Spike blocks 27 are fixed at both ends of the first arc-shaped block 16. A temperature sensor is installed on the cable duct. When the temperature of the cable duct reaches a pre-set dangerous threshold, the micro motor 15 will start. First, the micro motor 15 rotates within the repair range through a certain number of forward and reverse rotations. At this time, the spike blocks 27 cannot pierce the second airbag 22. This process mainly serves to pre-disperse the flame retardant powder in the second airbag 22. After that, the rotation range of the micro motor 15 will exceed the repair range until the spike blocks 27 pierce the second airbag 22. Since the pre-dispersed flame retardant powder will spray out instantly when pierced by the spike blocks 27, the amount of the flame retardant powder sprayed out is more and the spraying range is wider, thus achieving a good flame retardant effect on the cable duct.

[0041] The central tube 2 is set as a hollow aluminum tube, which greatly increases the heat dissipation effect.

[0042] Working principle: During operation, when the outer protective tube 1 is subjected to a large external impact force, there are two cases. The first case is that the impact force acts on the part of the outer protective tube 1 above the repair mechanism 5, and the second case is that the impact force acts on the part of the outer protective tube 1 between two adjacent repair mechanisms 5. When the impact force acts on the part of the outer protective tube 1 above the repair mechanism 5, since the repair mechanism 5 is composed of a first arc-shaped block 16, a second arc-shaped block 18 and an elastic structure 17, the elastic structure 17 between the first arc-shaped block 16 and the second arc-shaped block 18 will play a good buffering role for the external impact, preventing the direct impact on the microtube 3 and causing deformation and damage to the microtube 3. When the impact force acts on the part of the outer protective tube 1 between two adjacent repair mechanisms 5, the lower part of this part of the outer protective tube 1 is prone to concave deformation due to lack of support. If the concave deformed part is not repaired in time, it will cause extrusion and damage to the microtube 3, and then have an adverse impact on the overall bundle tube. When it is necessary to repair the concave deformation on the outer protective tube 1, the center tube 2 is driven to rotate forward and backward by a certain amplitude through the rotating structure 10. Among them, the forward rotation and reverse rotation of the center tube 2 are carried out alternately. The rotation of the center tube 2 will drive the second gear 8 meshing with the first gear 6 on the center tube 2 to rotate, and then drive the third gear 9 meshing with the second gear 8 to rotate, and then drive the microtube 3 fixed to the second gear 8 and the third gear 9 to rotate, and then drive the repair mechanism 5 on the microtube 3 to rotate to repair the concave deformation on the outer protective tube 1. Among them, the repair mechanism 5 is in Figure 2When in the position, the elastic structure 17 is in a compressed state, pressing the second arc-shaped block 18 against the inner wall of the outer protection tube 1. When the microtube 3 rotates, it drives the first arc-shaped block 16 to rotate, and then drives the elastic structure 17 and the second arc-shaped block 18 to rotate. Due to the setting of the elastic structure 17, on the one hand, when the microtube 3 rotates forward or backward, the second arc-shaped block 18 can always be pressed against the inner wall of the outer protection tube 1, and then the sunken and deformed part on the outer protection tube 1 can be repaired, that is, the sunken and deformed part is pushed outwards to restore its original state. The amplitude and number of forward and reverse rotations of the microtube 3 are set according to actual needs; on the other hand, during the process of the repair mechanism 5 turning to the position that needs to be repaired, since the distance between the first arc-shaped block 16 and the second arc-shaped block 18 is increasing, the elastic structure 17 will have an instantaneous impact force on the second arc-shaped block 18, that is, the second arc-shaped block 18 is pushed upwards, and the second arc-shaped block 18 will have an outward impact force on the sunken and deformed part on the outer protection tube 1, bouncing the sunken and deformed part outwards, which is convenient for the repair of the sunken and deformed part. This greatly improves the repair effect and efficiency of the sunken and deformed part; in addition, due to the special structure of the gear transmission mechanism 4, the second gear 8 and the third gear 9 on both sides of the sunken and deformed part on the outer protection tube 1 either rotate towards each other or rotate away from each other, so that the repair mechanisms 9 on the second gear 8 and the third gear 9 either approach each other simultaneously or move away from each other simultaneously, making the repair of the sunken and deformed part more comprehensive and greatly improving the repair efficiency. During the process of the second gear 8 and the third gear 9 moving away from each other, the part that needs to be repaired will be pulled, greatly improving the repair effect. There is no micro-cable in the central tube 2, and it remains in a hollow state. And through the setting of the gear transmission mechanism 4, a certain gap is left between the microtubes 3 and between the microtube 3 and the central tube 2, and the microtube 3 and the central tube 2 are well-positioned, so that there will be no mutual extrusion between the microtubes 3, between the microtube 3 and the central tube 2, and no deformation of the microtube 3 and the central tube 2, which is convenient for the blowing-in of the micro-cable, and at the same time greatly improves the heat dissipation effect, and then greatly increases the safety of the use of the bundle tube.

[0043] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A HDPE cluster pipe, characterized in that: The invention comprises an outer protective tube (1), wherein a central tube (2) is arranged inside the outer protective tube (1), a plurality of micro tubes (3) are arranged between the central tube (2) and the outer protective tube (1), a gear transmission mechanism (4) is arranged on the micro tubes (3) and the central tube (2), a repair mechanism (5) is fixed on the outer wall of the micro tube (3), and the top surface of the repair mechanism (5) supports the inner wall surface of the outer protective tube (1).

2. The HDPE cluster pipe according to claim 1, characterized in that: The gear transmission mechanism (4) comprises a first gear (6) fixed at the middle position of the central tube (2), the first gear (6) being meshed with a plurality of gear groups (7), each of the gear groups (7) comprising a second gear (8) meshed with the first gear (6), the second gear (8) being meshed with a third gear (9), the first gear (6) and the second gear (8) both penetrate and fix one of the micro tubes (3), and a rotating structure (10) is provided on one end of the central tube (2).

3. The HDPE cluster pipe according to claim 2, characterized in that: The rotating structure (10) comprises an end cap (11) detachably connected to one end of the outer protective tube (1); the end cap (11) is provided with a first through hole (12) matching the size and position of the micro tube (3); the end cap (11) is provided with a second through hole (13) matching the size and position of the central tube (2); one end of the central tube (2) passes through the second through hole (13); and a handle (14) or a micro motor (15) is fixed to the end of the central tube (2) passing through the second through hole (13).

4. The HDPE cluster pipe according to claim 2, characterized in that: The repair mechanism (5) comprises a first arc-shaped block (16) fixed to the microtube (3); the first arc-shaped block (16) is connected to a second arc-shaped block (18) via an elastic structure (17); and a flexible shield (19) is fixed between two ends on the same side of the first arc-shaped block (16) and the second arc-shaped block (18).

5. The HDPE cluster pipe according to claim 4, characterized in that: The elastic structure (17) is a plurality of springs (20) arranged between the first arc-shaped block (16) and the second arc-shaped block (18).

6. The HDPE cluster pipe according to claim 5, characterized in that: A first airbag (21) is provided on both the left and right sides of the spring (20); the bottom surface of the first airbag (21) is fixed on the inner wall surface of the first arc-shaped block (16); and the top surface of the first airbag (21) is fixed on the inner wall surface of the second arc-shaped block (18).

7. The HDPE cluster pipe according to claim 4, characterized in that: A second airbag (22) surrounds the outer wall of the microtube (3) provided with the first gear (6); a first fixing portion (23), a second fixing portion (24), a third fixing portion (25) and a fourth fixing portion (26) are provided on the second airbag (22); the second fixing portion (24) and the third fixing portion (25) are both fixed on the inner wall of the first arc-shaped block (16) corresponding to the microtube (3) provided with the first gear (6); the first fixing portion (23) and the second fixing portion (24) are respectively fixed on the inner walls of the first arc-shaped block (16) on both sides of the microtube (3) provided with the first gear (6).

8. The HDPE cluster pipe according to claim 7, characterized in that: The second airbag (22) is filled with flame retardant powder.

9. The HDPE cluster pipe according to claim 8, characterized in that: Thorn blocks (27) are fixed at both ends of the first arc-shaped block (16).

10. The HDPE cluster pipe according to claim 1, characterized in that: The central tube (2) is configured as a hollow aluminum tube.

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