Small-pipe-diameter self-walking hollow structure winding pipe manufacturing device

Abstract

The utility model belongs to the technical field of underground non-excavation construction, and relates to a small-pipe-diameter self-walking hollow structure winding pipe manufacturing device which comprises a mounting frame, a profile conveying unit and a winding unit, the profile conveying unit comprises an inlet end conveying mechanism and a winding end conveying mechanism, and the small-pipe-diameter self-walking hollow structure winding pipe manufacturing device is characterized by further comprising a mounting cylinder, an inlet end conveying mechanism is installed at the front end of the installation cylinder through an installation frame, a winding end conveying mechanism and a winding unit are installed on the outer wall of the installation cylinder, and a middle channel is formed in a cylinder body of the installation cylinder. The small-pipe-diameter self-walking hollow-structure winding pipe manufacturing device is scientific and reasonable in design, has the advantages of being multiple in applicable construction scenes, stable in work, capable of meeting construction requirements and high in efficiency, and has high innovativeness.

Description

TECHNICAL FIELD

[0001] The utility model belongs to underground non - excavation construction technical field relates to a pipe making device, concretely relates to a small pipe diameter hollow structure winding pipe making device of walking. BACKGROUND

[0002] Underground non - excavation construction technology includes the repair technology of non - excavation pipeline and the technology of tunneling.

[0003] The winding pipe making device has been mature in the field of non - excavation pipeline repair technology, and the pipeline lining formed by the winding pipe making device can repair the original pipeline.

[0004] Shield method is a fully mechanized construction method in tunneling method construction. It is to push the shield machine in the ground, and the surrounding rock is supported by the shield shell and the segment to prevent collapse in the tunnel. At the same time, the cutting device in front of the excavation face excavates the soil, and the excavated soil is transported out of the hole by the soil removal machine. The jacks are pressed at the rear to push forward, and the prefabricated concrete segments are assembled to form a mechanized construction method of tunnel structure. Shield tunneling method can choose prefabricated concrete segment assembly or pipe jacking method, but the operation time of these two methods is relatively long.

[0005] The pipeline lining formed by the winding pipe making device can play the role of shield lining on the inner wall of the tunnel. However, the winding pipe making device in the prior art is not suitable for the construction of tunneling, because the shield head of the shield machine needs to be powered during tunneling, and the soil and stone particles generated during tunneling need to be discharged from the formed channel. Therefore, there is a channel at the head and tail of the shield machine for installing power lines and discharge pipes. The existing winding pipe making device does not have a position suitable for installing the power lines and discharge pipes of the shield machine.

[0006] The Chinese patent with publication number CN221339666 discloses a small pipe diameter winding pipe making device of walking, which comprises a mounting frame, a strip conveying unit and a winding unit. The strip conveying unit comprises an entering end conveying mechanism and a winding end conveying mechanism. An entering end transmission mechanism is installed at one end of the mounting frame, and a winding unit is installed at the other end of the mounting frame. The winding end conveying mechanism is installed on the winding unit. The utility model design is scientific and reasonable, has the advantages of simple structure, improved repair efficiency, labor saving, convenient repair of small pipe diameter pipeline and easy implementation, and is a small pipe diameter winding pipe making device of walking with high innovation.

[0007] In the above -mentioned patent, the gear box is centrally arranged, and the expansion and contraction of the support arm are supported by a set of gear and rack structures. Therefore, the shaft of the driving gear in the box occupies the center position, cannot provide an effective hollow structure, and thus cannot be applied to the use of tunneling technology.

[0008] For example, the Chinese patent CN106224643 discloses a trenchless pipeline updating device capable of easily adjusting the pipe diameter, which comprises a roller chain ring and a driving assembly, the roller chain ring is composed of a plurality of chain roller units, each chain roller unit is mainly composed of a chain roller, a chain link and a chain link adjusting frame, the chain links are symmetrically hinged on the two sides of the chain roller in the radial direction, the lower part of the two chain links is hinged with a chain link adjusting frame, the starting end chain roller unit and the ending end chain roller unit of the roller chain ring are staggered by a certain angle, the driving assembly is installed on the starting end chain roller, the driving assembly comprises a hydraulic motor, a speed reduction mechanism and a pressure roller unit, the chain link of the chain wheel unit is fixed on one side of the speed reduction mechanism, the pressure roller unit is installed on the upper part of the speed reduction mechanism, the hydraulic motor is installed on the other side of the speed reduction mechanism, and the hydraulic motor drives the pressure roller unit to run through the speed reduction mechanism.

[0009] The patent is a walking device with a machine head on the roller chain ring, and a part of space is left in the middle of the roller chain ring, but due to the limitation of the machine head gear box structure and the size of the chain link, the minimum winding diameter is φ800mm, and when the assembly diameter is less than φ800mm, the driving assembly structure will occupy the center position, which is not suitable for the machine head of the small shield machine with a diameter less than 800mm. SUMMARY

[0010] The utility model discloses to overcome the insufficient of prior art, provide a kind of small pipe diameter self-walking hollow structure winding pipe device suitable for trenchless pipeline repair construction and also suitable for tunneling construction.

[0011] The utility model discloses to overcome the insufficient of prior art, provide a kind of small pipe diameter self-walking hollow structure winding pipe device suitable for trenchless pipeline repair construction and also suitable for tunneling construction.

[0012] A small pipe diameter self-walking hollow structure winding pipe device, comprising a mounting bracket, a profile conveying unit and a winding unit, the profile conveying unit includes an entry end conveying mechanism and a winding end conveying mechanism, characterized in that: it further comprises a mounting cylinder, the entry end conveying mechanism is mounted on the front end of the mounting cylinder through the mounting bracket, the winding end conveying mechanism and the winding unit are respectively mounted on the outer wall of the mounting cylinder, and the cylinder body of the mounting cylinder forms an intermediate passage.

[0013] Furthermore, the mounting cylinder includes a cylinder body, a front end mounting ring and a rear end mounting ring mounted at both ends of the cylinder body, the front end mounting ring and the rear end mounting ring are both structures with mounting platforms spaced apart in the outer ring body, and the mounting platforms on the front end mounting ring and the rear end mounting ring are staggered.

[0014] Moreover, the entering end conveying mechanism and the winding end conveying mechanism both comprise a hydraulic motor, a conveying box, a driving light shaft, a driving gear, a driven gear, a driven shaft and knurled pressure rollers, the conveying box is arranged at the output end of the hydraulic motor, a conveying port is arranged at the middle part of the conveying box, the conveying port divides the inside of the conveying box into two cavities, the output shaft of the hydraulic motor extends into the lower cavity, the driving light shaft is arranged on the output shaft, the driving gear is arranged on the driving light shaft, the driven shaft is arranged in the upper cavity through a bearing, the driven gear meshing with the driving gear is arranged on the driven shaft, and the knurled pressure rollers opposite to the shaft body of the driving light shaft are arranged on the driven shaft.

[0015] Moreover, the winding unit comprises a supporting roller, the supporting roller comprises a pressure roller shaft, a fixed pressure roller, a fixed ring, a front guide roller and a joint bearing, the fixed pressure roller is rotatably arranged on the outside of the pressure roller shaft through a bearing, the fixed ring is arranged on the outer ring of the fixed pressure roller, the joint bearings are arranged at the front and rear ends of the pressure roller shaft, and the front guide roller is rotatably arranged on the front end of the pressure roller shaft at one side joint bearing, the supporting roller is rotatably arranged on the mounting table of the front end mounting ring and the rear end mounting ring through the joint bearings, and the joint bearings are arranged on the mounting table through the mounting assembly.

[0016] Moreover, the mounting assembly comprises a cushion block and a screw, the joint bearing mounting hole is arranged at the middle part of the cushion block, the joint bearing is connected in the joint bearing mounting hole, the screw embedding holes are arranged at the two ends of the joint bearing mounting hole, the screw connecting holes are arranged on the two sides of the end face of the mounting table corresponding to the positions of the screw embedding holes, and the cushion block is mounted on the mounting table through the screw.

[0017] Moreover, the mounting assembly comprises a spring, a T-shaped mounting sleeve, a limiting ring and a cover plate, the mounting groove hole is arranged at the middle part of the mounting table, the screw connecting holes are arranged at the outer ring of the mounting groove hole in intervals, the spring is embedded in the mounting groove, the T-shaped mounting sleeve is arranged with the joint bearing mounting hole at the middle part, the joint bearing is arranged in the joint bearing mounting hole, the through hole passing through the joint bearing is arranged at the middle part of the cover plate, the connecting hole is arranged at the outer ring of the through hole corresponding to the position of the screw connecting hole, the cover plate is sleeved on the T-shaped mounting sleeve and then connected on the mounting table through the screw, the limiting ring is threadedly connected at the outer ring of the bottom of the T-shaped mounting sleeve, and the limiting ring is limited at the inner edge of the spring and the cover plate.

[0018] Moreover, the intermediate channel guiding unit is arranged at the waist hole of the installation cylinder, the intermediate channel guiding unit comprises an installation plate, an arc-shaped connecting plate and a guiding assembly, the installation plate is provided with through holes at the front and rear ends, the guiding assembly is arranged at the through hole, the connecting holes are arranged at the installation plate between the two through holes, the arc-shaped connecting plate is provided with notches at the middle of the left and right ends, and the notches make the connecting claws on the front and rear arc-shaped connecting plates.

[0019] Moreover, the guiding assembly comprises a bearing, a mounting shaft and a shaft roller, the bearing is arranged at the outer side of the through hole, the mounting shaft is rotatably arranged in the bearing, the shaft roller is arranged at the two ends of the mounting shaft, the shaft roller at one end is arranged at the outer side of the installation plate, and the shaft roller at the other end is embedded in the through hole.

[0020] The utility model discloses the advantages and positive effects are:

[0021] 1. The small pipe diameter self-walking hollow structure winding pipe manufacturing device can be used for trenchless pipe repairing equipment, and can be used for replacing shield lining directly following small shield machine head, the intermediate channel can be used as the reserved space of shield machine slag discharge pipe and power line, and engineering needs are met.

[0022] 2. The small pipe diameter self-walking hollow structure winding pipe manufacturing device can manufacture small diameter spiral pipe (less than φ800mm), and a certain intermediate channel is reserved at the center, and the winding machine head is self-walking. The center has a channel of φ240mm, which can provide installation space for other combined equipment, so that the equipment can be followed by small shield machine and other equipment to carry out synchronous operation. According to the winding principle, the strip material is conveyed to the winding end conveying mechanism through the entering end conveying mechanism of the device, and then is spirally wound, so that the male and female buckles on both sides of the strip material are buckled, and a spiral pipe is formed. The device is mainly suitable for winding pipe with small pipe diameter, and the pipe diameter range is DN500-DN800.

[0023] 3. The small pipe diameter self-walking hollow structure winding pipe manufacturing device is detachably connected on the installation cylinder through the front end mounting ring and the rear end mounting ring, the size of the front end mounting ring and the rear end mounting ring can be replaced according to the pipe diameter to be wound, and the pipe manufacturing requirement is met.

[0024] 4. The small pipe diameter self-walking hollow structure winding pipe device, through the setting of the intermediate channel guide unit, the friction between the installation cylinder and the installation pipe in the intermediate channel can be reduced, and the stability of the cooperation of the shield machine head and the winding machine head can be ensured.

[0025] 5. The small pipe diameter self-walking hollow structure winding pipe device is scientific and reasonable in design, has the advantages of multiple applicable construction scenes, stable work, meeting construction requirements, high efficiency, and the like, and is a small pipe diameter self-walking hollow structure winding pipe device with high innovation. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 is a structural schematic view of the utility model (winding belt-shaped material);

[0027] Figure 2 is Figure 1 is a structural schematic view of the utility model omitting the belt-shaped material;

[0028] Figure 3 is Figure 2 is a structural schematic view of the utility model from another angle;

[0029] Figure 4 is a structural schematic view of the installation cylinder of the utility model;

[0030] Figure 5 is a structural schematic view of the entering end conveying mechanism or the winding end conveying mechanism of the utility model;

[0031] Figure 6 is Figure 5 is a sectional view;

[0032] Figure 7 is a structural schematic view of the support roller of the utility model;

[0033] Figure 8 is a structural schematic view of the installation assembly of the utility model;

[0034] Figure 9 is a structural schematic view of another embodiment of the installation assembly of the utility model;

[0035] Figure 10 is a structural schematic view of the intermediate channel guide unit of the utility model;

[0036] Figure 11 is a structural schematic view of the intermediate channel guide unit of the utility model from another angle.

[0037] BRIEF DESCRIPTION OF DRAWINGS

[0038] 1 - spiral winding pipe device, 2 - strip material, 3 - entering end conveying mechanism, 4 - mounting frame, 5 - winding end conveying mechanism, 6 - winding unit, 7 - mounting cylinder, 8 - intermediate passage guide unit, 9 - mounting frame, 10 - front end mounting ring, 11 - cylinder body, 12 - waist hole, 13 - mounting table, 14 - rear end mounting ring, 15 - hydraulic motor, 16 - conveying port, 17 - conveying box, 18 - knurled pressure roller, 19 - driven shaft, 20 - driven gear, 21 - driving gear, 22 - driving optical shaft, 23 - front guide roller, 24 - joint bearing, 25 - fixed ring, 26 - fixed pressure roller, 27 - pressure roller shaft, 28 - arc-shaped connecting plate, 29 - notch, 30 - mounting plate, 31 - guide assembly, 32 - connecting claw, 33 - shaft roller, 34 - bearing, 35 - through hole, 36 - cushion block, 37 - joint bearing mounting hole, 38 - T-shaped mounting sleeve, 39 - limiting ring, 40 - cover plate, 41 - spring. DETAILED DESCRIPTION

[0039] The embodiments of the utility model are further described in detail below in combination with the drawings:

[0040] A small-diameter self-walking hollow structure winding pipe device, comprising a mounting frame 4, a profile conveying unit and a winding unit 6, the profile conveying unit comprises an entering end conveying mechanism 3 and a winding end conveying mechanism 5, and the innovation lies in further comprising a mounting cylinder 7, the entering end conveying mechanism is mounted at the front end of the mounting cylinder through a mounting frame 9, the winding end conveying mechanism and the winding unit are respectively mounted on the outer wall of the mounting cylinder, and the cylinder body inside the mounting cylinder constitutes an intermediate passage.

[0041] The mounting cylinder comprises a cylinder body 11 and front end mounting rings 10 and rear end mounting rings 14 mounted at both ends of the cylinder body through screws, the front end mounting rings and the rear end mounting rings are both structures in which mounting tables 13 are arranged at intervals on the outer rings of the ring bodies, and the mounting tables on the front end mounting rings and the rear end mounting rings are arranged at an angle.

[0042] In the embodiment, the inclination angle of the supporting roller is 1.88 °, which is the helical pitch angle calculated according to the diameter φ568 mm of the spiral wound finished pipe and the width size 56 mm of the strip material. The length of the supporting roller is 260 mm and the length of the cylinder body of the mounting cylinder is 320 mm, which ensures that the angle of the front and rear mounting tables is 1.88.

[0043] The entering end conveying mechanism and the winding end conveying mechanism both comprise a hydraulic motor 15, a conveying box 17, a driving light shaft 22, a driving gear 21, a driven gear 20, a driven shaft 19 and knurled pressure rollers 18, the conveying box is arranged at the output end of the hydraulic motor, a conveying port 16 is arranged at the middle part of the conveying box, the conveying port divides the inside of the conveying box into two cavities in upper and lower parts, the output shaft of the hydraulic motor extends into the lower cavity, the driving light shaft is arranged on the output shaft, the driving gear is arranged on the driving light shaft, the driven shaft is arranged in the upper cavity through bearings, the driven gear meshing with the driving gear is arranged on the driven shaft, and the knurled pressure rollers opposite to the shaft body of the driving light shaft are uniformly arranged on the driven shaft.

[0044] The banded material and the hydraulic motor oil pipe line in the small-diameter self-walking hollow structure spiral winding pipe making device 1 are arranged on the same side, but in actual application, they are not limited to being arranged on the same side, and can be distributed on two sides by adjusting the conveying box, so that the banded material and the oil pipe are not entangled when working for a long distance, and the problem that the device cannot work normally is avoided.

[0045] In the embodiment, the winding unit comprises four groups of support rollers, each support roller comprises a pressure roller shaft 27, a fixed pressure roller 26, a fixed ring 25, a front guide roller 23 and a joint bearing 24, the fixed pressure roller is rotatably arranged on the outer part of the pressure roller shaft through a bearing, the fixed ring is arranged on the outer ring of the fixed pressure roller, the joint bearings are arranged at the front end and the rear end of the pressure roller shaft, and the front guide roller is rotatably arranged on the pressure roller shaft at the front end of the joint bearing on one side, the support roller is rotatably arranged on the mounting table of the front end mounting ring and the rear end mounting ring through the joint bearings, so that a certain inclination angle is formed, and the winding of the banded material is facilitated. The length of the support roller and the inclination angle during installation are matched with the overall length of the mounting cylinder.

[0046] The joint bearing is arranged on the mounting table through the mounting assembly.

[0047] The mounting assembly has two implementation forms:

[0048] One is a fixed type, that is, the support rollers on the winding unit are fixedly arranged and cannot be adjusted in outer diameter.

[0049] The mounting assembly comprises a cushion block 36 and a screw, a joint bearing mounting hole 37 is arranged in the middle of the cushion block, a joint bearing is connected in the joint bearing mounting hole, screw embedding holes are arranged at both ends of the joint bearing mounting hole, screw connecting holes are arranged on both sides of the end surface of the mounting table corresponding to the positions of the screw embedding holes, and the cushion block is mounted on the mounting table through the screw.

[0050] The support roller on the winding unit is adjustable, that is, the support roller can be stretched and contracted in the circumferential direction to automatically adapt to the pipe diameter.

[0051] The mounting assembly comprises a spring 41, a T-shaped mounting sleeve 38, a limiting ring 39 and a cover plate 40, a mounting groove hole is arranged in the middle of the mounting table, screw connecting holes are arranged at intervals in the outer circle of the mounting groove hole, a spring is embedded in the mounting groove, the T-shaped mounting sleeve is provided with a joint bearing mounting hole in the middle, a joint bearing is mounted in the joint bearing mounting hole, a through hole for passing through the joint bearing is arranged in the middle of the cover plate, connecting holes are arranged in the outer circle of the through hole corresponding to the positions of the screw connecting holes, the cover plate is sleeved on the T-shaped mounting sleeve and is connected to the mounting table through the screw, the limiting ring is threadedly connected to the outer circle of the bottom of the T-shaped mounting sleeve, and the limiting ring is limited at the inner edge of the spring and the cover plate.

[0052] During assembly, the T-shaped mounting sleeve is sleeved on the cover plate, the limiting ring is threadedly connected to the bottom of the T-shaped mounting sleeve and is pressed on the spring arranged in the mounting groove hole, then the cover plate is connected to the mounting table through the screw, the T-shaped mounting sleeve can be stretched and contracted under the action of the spring, and finally the joint bearing is mounted on the T-shaped mounting sleeve.

[0053] A rigid pipeline with an outer diameter of about 240mm protrudes from the center of the head and tail of the shield machine, and provides space for power pipelines and slag discharge pipelines, and in the process of screwing the pipeline, the winding pipeline device will slide and rub against the rigid pipeline, increasing the resistance during screw winding. Therefore, the utility model also designs an intermediate channel guiding unit 8.

[0054] The intermediate channel guide unit in the embodiment is four groups, the mounting cylinder is provided with four waist holes 12 on the cylinder wall, and the intermediate channel guide unit is mounted at each waist hole; the intermediate channel guide unit comprises a mounting plate 30, an arc-shaped connecting plate 28 and a guide assembly 31, through holes 35 are symmetrically arranged at the front and rear ends of the mounting plate, the guide assembly is mounted at the through holes, connecting holes are arranged between the two through holes on the mounting plate, notches 29 are symmetrically arranged at the middle of the left and right ends of the arc-shaped connecting plate, the notches make part of the arc-shaped connecting plate before and after the notches form connecting claws 32; the mounting plate is fixed on the back of the arc-shaped connecting plate through screws, since the movement track of the spiral winding pipe device with the hollow structure and small pipe diameter is spiral forward, the arc-shaped connecting plate is arranged to be inclined on the mounting plate, and the inclination angle is 4.3°. The connecting claws on the arc-shaped connecting plate are connected on both sides of each waist hole of the mounting cylinder through screws. The guide assembly comprises a bearing 34, a mounting shaft and a shaft roller 33, the bearing is mounted outside each through hole, the mounting shaft is rotatably mounted in the bearing, and the shaft roller is mounted at both ends of the mounting shaft, one end of the shaft roller is located outside the mounting plate, and the other end of the shaft roller is embedded in the through hole, and the upper and lower roller surfaces of the shaft roller are higher than the upper and lower end surfaces of the mounting frame.

[0055] The intermediate channel guide unit changes the previous sliding friction into rolling friction, that is, the shaft roller can produce rolling friction with the pipeline mounted in the intermediate channel of the mounting cylinder, the resistance during the operation of the winding pipe device is reduced, the stability of the operation of the spiral winding pipe head is improved, and the movement of the pipeline is facilitated. Meanwhile, under other working conditions, the pipeline mounted in the intermediate channel can be used as a central support, so that the device can perform spiral winding pipe forming along the central support.

[0056] When the spiral winding method is used to wind a φ600mm pipe diameter forming pipe, the winding speed is about 1m / 3min, which is synchronous with the shield tunneling speed, so that when the device is applied to shield lining construction, the construction efficiency can be greatly improved.

[0057] Although the embodiments and drawings of the utility model are disclosed for the purpose of illustration, those skilled in the art can understand that various substitutions, changes and modifications are possible without departing from the spirit and scope of the utility model and the appended claims, therefore, the scope of the utility model is not limited to the disclosed contents in the embodiments and drawings.

Claims

1. A small-diameter self-propelled hollow structure winding tube-making device, comprising a mounting frame, a profile conveying unit, and a winding unit, wherein the profile conveying unit includes an entry end conveying mechanism and a winding end conveying mechanism, characterized in that: The installation cylinder is provided with an entering end conveying mechanism at the front end thereof, and a winding end conveying mechanism and a winding unit are respectively installed on the outer wall of the installation cylinder.

2. A small-diameter self-walking hollow structural winding pipe device according to claim 1, characterized in that: The installation cylinder comprises a cylinder body, a front end mounting ring and a rear end mounting ring installed at both ends of the cylinder body, and the front end mounting ring and the rear end mounting ring are both provided with mounting tables at intervals on the outer ring of the ring body, and the mounting tables on the front end mounting ring and the rear end mounting ring are arranged at intervals.

3. A small-diameter self-walking hollow structural winding pipe device according to claim 1, characterized in that: The entering end conveying mechanism and the winding end conveying mechanism both comprise a hydraulic motor, a conveying box, a driving light shaft, a driving gear, a driven gear, a driven shaft and knurled pressure rollers, the conveying box is arranged at the output end of the hydraulic motor, a conveying port is arranged at the middle part of the conveying box, the conveying port divides the inside of the conveying box into two cavities in upper and lower positions, the output shaft of the hydraulic motor extends into the lower cavity, the driving light shaft is installed on the output shaft, the driving gear is installed on the driving light shaft, the driven shaft is installed in the upper cavity through a bearing, the driven gear meshing with the driving gear is installed on the driven shaft, and the knurled pressure rollers opposite to the shaft body of the driving light shaft are arranged at intervals on the driven shaft.

4. A small-diameter self-walking hollow structural winding pipe laying apparatus according to claim 2, characterized in that: The winding unit comprises a support roller, the support roller comprises a pressure roller shaft, a fixed pressure roller, a fixed ring, a front guide roller and a joint bearing, the fixed pressure roller is rotatably installed on the outer part of the pressure roller shaft through a bearing, the fixed ring is arranged on the outer ring of the fixed pressure roller, the joint bearings are arranged at the front and rear ends of the pressure roller shaft, and the front guide roller is rotatably installed on the pressure roller shaft at the front end of the joint bearing on one side, the support roller is rotatably installed on the mounting tables on the front end mounting ring and the rear end mounting ring through the joint bearings, and the joint bearings are installed on the mounting tables through mounting assemblies.

5. A small-bore self-propelled hollow structural winding pipe laying apparatus according to claim 4, characterized in that: The mounting assembly comprises a cushion block and a screw, a joint bearing installation hole is arranged at the middle part of the cushion block, the joint bearing is connected in the joint bearing installation hole, screw embedding holes are arranged at both ends of the joint bearing installation hole, screw connection holes are arranged on both sides of the end face of the mounting table at positions corresponding to the screw embedding holes, and the cushion block is installed on the mounting table through the screw.

6. A small-bore self-propelled hollow structural winding pipe laying apparatus according to claim 4, characterized in that: The mounting assembly comprises a spring, a T-shaped mounting sleeve, a limiting ring and a cover plate, a mounting groove hole is arranged at the middle part of the mounting table, screw connection holes are arranged at intervals on the outer ring of the mounting groove hole, the spring is embedded in the mounting groove, the T-shaped mounting sleeve is provided with a joint bearing installation hole at the middle part, the joint bearing is installed in the joint bearing installation hole, a through hole for passing the joint bearing is arranged at the middle part of the cover plate, connection holes are arranged on the outer ring of the through hole at positions corresponding to the screw connection holes, the cover plate is sleeved on the T-shaped mounting sleeve and then connected to the mounting table through the screw, the limiting ring is threadedly connected to the outer ring of the bottom of the T-shaped mounting sleeve, and the limiting ring is limited at the inner edge of the spring and the cover plate.

7. A small-diameter self-walking hollow structural winding pipe laying apparatus according to claim 1, characterized in that: The installation cylinder is provided with waist holes at intervals on the cylinder wall, and the intermediate channel guide unit is installed at each waist hole.

8. A small-bore self-propelled hollow structural winding pipe-laying apparatus according to claim 7, characterized in that: The guide assembly comprises a bearing, a mounting shaft and a shaft roller. The bearing is installed outside each of the through holes. The mounting shaft is rotatably installed in the bearing. The shaft roller is installed at both ends of the mounting shaft. The shaft roller at one end is located outside the mounting plate. The shaft roller at the other end is embedded in the through hole. The upper and lower roller faces of the shaft roller are higher than the upper and lower end faces of the mounting frame.

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