Supporting device in pipeline

Abstract

The utility model provides a pipeline inner supporting device, and belongs to the technical field of steel pipe inner supporting. According to the technical scheme, the supporting device in the pipeline is used for being installed on the inner wall of the pipeline and comprises a plurality of supporting bodies and fixing parts arranged on the supporting bodies, the two opposite ends of each supporting body are each provided with a telescopic supporting part, the telescopic supporting parts can stretch out and draw back in the extending direction of the supporting bodies, and one end of each telescopic supporting part is connected with a supporting piece; the supporting piece can move in a telescopic mode along with the telescopic supporting part to abut against the inner wall of the pipeline for supporting, the multiple supporting bodies are connected through the fixing part, the extending direction of the supporting bodies is perpendicular to the axial direction of the pipeline, and the extending directions of the multiple supporting bodies intersect. According to the device, the telescopic supporting piece is arranged on the supporting body, the supporting requirements of steel pipes with different inner diameters can be met, the use cost is effectively saved, the overall size is adjusted through stretching and retracting of the telescopic supporting piece, and transportation, carrying and storage are convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of steel pipe internal supports, in particular to a pipeline internal support device. Background Art

[0002] In the production of large-diameter steel pipes, steel pipes are prone to varying degrees of deformation due to the influence of their own gravity, resulting in deviations in the roundness of the large-diameter steel pipes, especially at the pipe ends, which has a greater impact. This causes inconvenience in the subsequent processing of the steel pipes, not only affecting production efficiency, but also easily causing manufacturing defects. Therefore, during the processing of the steel pipes, a support device is generally installed inside the pipe to support the inner wall.

[0003] Most of the current pipe internal support frames are welded together at the center through several connecting rods, which makes them inconvenient to install and disassemble. After disassembly, they are large in size, which makes them inconvenient to transport and reuse. In addition, a set of support frames can only be used for steel pipes of one inner diameter size. When supporting steel pipes of different types, support frames of different sizes are required, which increases the cost of use. Utility Model Content

[0004] The utility model aims to solve the problems that a supporting frame currently adopts several connecting rods welded at the center is inconvenient to install and disassemble and has low applicability, and proposes an inner-pipe supporting device.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] The utility model provides a pipe inner support device for installation on the inner wall of the pipe, comprising a plurality of support bodies and a fixing portion provided on the support bodies, a telescopic support portion being provided at opposite ends of the support bodies, the telescopic support portion being capable of telescoping along the extension direction of the support body, a support member being connected to one end of the telescopic support portion, the support member being capable of telescoping and moving with the telescopic support portion to abut against the inner wall of the pipe for support, the plurality of support bodies being connected by the fixing portion, the extension direction of the support bodies being perpendicular to the axial direction of the pipe, and the extension directions of the plurality of support bodies being intersecting. By providing a telescopic support member on the support body, the device can meet the support needs of steel pipes of different inner diameters, effectively saving use costs, and adjusting the overall length of the support body and thus the overall volume by telescoping the support member, thereby facilitating transportation, carrying and storage, and being easy to use. In addition, the plurality of support bodies are fixed together by the fixing portion to support different points on the inner wall of the steel pipe, thereby improving the uniformity of support for the steel pipe, further reducing deformation of the steel pipe, and improving support efficiency.

[0007] Furthermore, the telescopic support portion includes a support rod body, a support body having a telescopic channel, the support rod body being movably disposed in the telescopic channel and movable along the telescopic channel, and the support rod body being locked to the support body by a locking member to restrict movement of the support rod body. By providing the support body and the support rod body as separate structures, the device can be separated when not in use, thereby facilitating transportation and portability, and facilitating assembly and disassembly, thereby improving user convenience. The device has a simple structure, is easy to assemble and disassemble, and is convenient to use.

[0008] Furthermore, the telescopic support portion includes an adjustable telescopic member, one end of which is connected to the support rod and the other end to the support member. The adjustable telescopic member is driven by an external force to cause the support member to telescope along the extension direction of the support body. By providing the adjustable telescopic member, the device further adjusts the distance of the support member, thereby adjusting the support capacity of the pipe wall and further ensuring the stability of the support.

[0009] Furthermore, the telescopic adjustment member includes a double-ended adjustment screw, a first nut, and a second nut. The first nut is fixedly connected to the support rod, and the second nut is fixedly connected to the support member. The double-ended adjustment screw includes a first threaded portion and a second threaded portion disposed oppositely. The first threaded portion cooperates with the first nut, and the second threaded portion cooperates with the second nut. The first and second threaded portions have opposite spiral directions. By providing a double-ended adjustment screw with opposite spiral directions of the first and second threaded portions, the device can move the two screws by two pitches by driving the double-ended adjustment screw one rotation, thereby improving movement efficiency.

[0010] Furthermore, the double-headed adjusting screw is provided with an adjusting through hole, and an external force can drive the double-headed adjusting screw to rotate through the adjusting through hole to drive the support member to move.

[0011] Furthermore, the telescopic adjustment member includes a connecting locking member. The support rod body is provided with a first connecting hole. The connecting locking member can pass through the first connecting hole and the adjustment through hole to connect and lock the double-ended adjustment screw to the support rod body, thereby restricting the rotation of the double-ended adjustment screw. By providing a locking member to relatively connect the support rod body and the support body, this device prevents the double-ended adjustment screw from loosening due to vibration of the steel pipe during transportation.

[0012] Furthermore, a first tube is fixed to one end of the first nut near the double-ended adjustment screw, the first tube having a first passage extending axially therethrough, the first passage having the same thread structure as the first nut, and the first threaded portion being matingly connected to the first passage. A second tube is fixed to one end of the second nut near the double-ended adjustment screw, the second tube having a second passage extending axially therethrough, the second passage having the same thread structure as the second nut, and the second threaded portion being matingly connected to the second passage. The double-ended adjustment screw can move within the first and second tubes, further increasing the adjustment range of the double-ended adjustment screw.

[0013] Furthermore, the support body is provided with a plurality of first fixing holes, which are in communication with the telescopic passage and are evenly spaced along the extension direction of the telescopic passage. The support rod is provided with a plurality of second fixing holes, which are evenly spaced along the axial direction of the support rod. When the support rod moves along the telescopic passage, the first fixing holes and the second fixing holes are correspondingly connected. The locking member includes a locking pin, which can pass through the first fixing hole and the second fixing hole to lock the support body and the support rod. By providing the first fixing hole, the second fixing hole, and the locking pin to lock the relative position of the support body and the support rod, locking is convenient, and adjustment of the telescopic position is more convenient.

[0014] Furthermore, the fixing portion includes a fixing slot disposed in the middle of the support body. The fixing slots of the multiple support bodies are interconnected, and a clamping bolt passes through the multiple fixing slots to secure the multiple support bodies. The opening direction of the fixing slot is aligned with the extension direction of the support body, allowing the support body to move relative to the clamping bolt. By providing the fixing slots to secure the multiple support bodies, the present device can effectively adjust the fixed positions of the multiple support bodies, thereby ensuring that the fixing points of the support bodies are always aligned with the center of the steel pipe, effectively preventing the support bodies from bending or deforming.

[0015] Furthermore, the support member includes an abutment portion and a connecting portion that are connected to each other, the connecting portion is fixedly connected to the telescopic support portion, the abutment portion abuts against the inner wall of the pipe, the abutment portion is an arc-shaped structure, the convex surface of the abutment portion can abut against the inner wall of the pipe, and the abutment portion is provided with an elastic buffer pad.

[0016] It can be seen from the above technical solutions that the advantages of the present invention are:

[0017] 1. The utility model can meet the support needs of steel pipes with different inner diameters by arranging a retractable telescopic support member on the support body, effectively saving the use cost. The overall length of the support body is adjusted by the extension and contraction of the telescopic support member, and then the overall volume is adjusted, so as to facilitate transportation, carrying and storage, and easy to use. In addition, multiple support bodies are fixed together by a fixing part to support different points on the inner wall of the steel pipe, thereby improving the uniformity of the support for the steel pipe, further reducing the deformation of the steel pipe, and improving the support efficiency.

[0018] 2. The utility model further adjusts the distance of the support member by setting an adjustable telescopic member, thereby adjusting the supporting capacity of the pipe wall and further ensuring the supporting stability of the pipe wall.

[0019] 3. The utility model fixes multiple support bodies by setting fixed through grooves, which can effectively adjust the fixed positions of multiple support bodies, so that the fixed points of the support bodies are always consistent with the center of the steel pipe, effectively avoiding bending and deformation of the support bodies. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solution of the present invention, the following is a brief introduction to the drawings required for the description. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 This is a schematic diagram of the installation structure of the support body and the pipeline in one embodiment of the present utility model;

[0022] Figure 2 This is a schematic cross-sectional view of a support body in one embodiment of the present invention;

[0023] Figure 3 It is a schematic cross-sectional structure diagram of an adjusting telescopic member in one embodiment of the utility model.

[0024] Description of main reference numerals:

[0025] 100. Pipe; 200. Support body; 210. Fixed through groove; 220. Telescopic channel; 230. First fixing hole; 300. Telescopic support part; 310. Support rod body; 311. Second fixing hole; 320. Telescopic adjustment member; 321. Double-headed adjusting screw; 3211. First threaded part; 3212. Second threaded part; 3213. Adjustment through hole; 322. First nut; 3221. First tube body; 323. Second nut; 3231. Second tube body; 400. Support member; 410. Abutment part; 420. Connecting part; 430. Elastic buffer pad; 500. Fastening bolt. DETAILED DESCRIPTION

[0026] In order to make the purpose, features, and advantages of the present invention more obvious and easy to understand, the technical solutions of the present invention will be clearly and completely described below in conjunction with the drawings in the specific embodiments. Obviously, the embodiments described below are only part of the embodiments of the present invention, not all of them. Based on the embodiments in this patent, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this patent.

[0027] See also Figure 1-Figure 3A support device inside a pipe 100 is used to be installed on the inner wall of the pipe 100, including multiple support bodies 200 and fixing parts arranged on the support bodies 200. Telescopic support parts 300 are provided at opposite ends of the support body 200. The telescopic support part 300 can be telescoped along the extension direction of the support body 200. One end of the telescopic support part 300 is connected to a support member 400. The support member 400 can be telescoped and moved with the telescopic support part 300 to abut and support the inner wall of the pipe 100. Multiple support bodies 200 are connected by fixing parts, and the extension direction of the support body 200 is perpendicular to the axial direction of the pipe 100, and the extension directions of the multiple support bodies 200 intersect.

[0028] In this embodiment, if Figure 1 、 2 As shown, the support body 200 can be a square tube structure, and telescopic support parts 300 are provided at both ends along the length direction of the support body 200. The telescopic support part 300 can perform telescopic movement relative to the support body 200 along the length direction of the support body 200 to adjust the overall length of the support body 200 in its length direction, so that the support member 400 at one end of the telescopic support part 300 can support steel pipes with different inner diameters. The support body 200 is also provided with a fixing part between the two telescopic support parts 300. During installation, multiple support bodies 200 can be fixedly connected together through their respective fixing parts.

[0029] When in use, in the initial state, the telescopic support part 300 is in a retracted state, thereby reducing the overall length of the support body 200, making it convenient to transport, carry and store. The support body 200 is placed in the inner wall of a large-diameter steel pipe, wherein the length direction of the support body 200 is perpendicular to the axial direction of the steel pipe, that is, the support body 200 is placed along the radial direction of the steel pipe, and then according to the radial size of the inner wall of the steel pipe, the telescopic support part 300 is moved so that the telescopic support part 300 is extended relative to the support body 200, so that the support piece 400 at one end of the telescopic support part 300 is abutted and supported against the inner wall of the steel pipe, and the support piece 400 of the telescopic support part 300 at the other end of the support body 200 is also abutted and supported on the inner wall of the steel pipe. Since the support body 200 is placed along the radial direction of the steel pipe, the two support points of the support body 200 and the inner wall of the steel pipe are symmetrical with the center of the inner diameter of the steel pipe. In addition, in order to improve the uniform support of the steel pipe, a plurality of support bodies 200 are set. The plurality of support bodies 200 are consistent with the above-mentioned support method, and all support the inner wall of the steel pipe along the radial direction of the steel pipe, and the respective extension directions of the plurality of support bodies 200 are cross-arranged. For example, when two support bodies 200 are set, the two support bodies 200 are fixedly connected in a cross shape. When three support bodies 200 are set, the three support bodies 200 are fixedly connected in a M shape, so that the angles between the extension directions of the plurality of support bodies 200 remain consistent to ensure uniform support of the inner wall of the steel pipe.

[0030] In the above structure, by arranging a retractable telescopic support member 400 on the support body 200, the support needs of steel pipes with different inner diameters can be met, avoiding the situation of using support frames of different sizes when supporting steel pipes with different inner diameters, effectively saving the use cost, and adjusting the overall length of the support body 200 by the telescopic support member 400, thereby adjusting the overall volume size, thereby facilitating transportation, carrying and storage, and being easy to use. In addition, multiple support bodies 200 are fixed together through a fixing part to support different points on the inner wall of the steel pipe, thereby improving the uniformity of the support of the steel pipe, further reducing the deformation of the steel pipe, and improving the support efficiency.

[0031] In the specific structure of the telescopic support part 300, as shown in FIG. Figure 2 As shown, the telescopic support portion 300 includes a support rod 310. The support body 200 is provided with a telescopic channel 220. The support rod 310 is movably disposed in the telescopic channel 220 and can move along the telescopic channel 220. The support rod 310 is locked to the support body 200 by a locking member to restrict the movement of the support rod 310. The support body 200 is provided with a plurality of first fixing holes 230, which are in communication with the telescopic channel 220. The plurality of first fixing holes 230 are evenly spaced along the extension direction of the telescopic channel 220. The support rod 310 is provided with a plurality of second fixing holes 311, which are evenly spaced along the extension direction of the support rod 310. When the support rod 310 moves along the telescopic channel 220, the first fixing holes 230 and the second fixing holes 311 are correspondingly connected. The locking member includes a locking pin that can pass through the first fixing hole 230 and the second fixing hole 311 to lock the support body 200 and the support rod 310.

[0032] In this embodiment, the support rod body 310 can also be a square tube structure, wherein the support body 200 is a square tube with a size of 50*50*4mm, and the support rod body 310 is a square tube with a size of 40*40*5mm. During installation, the support rod body 310 is inserted into the support body 200, and the support rod body 310 slides back and forth in the support body 200 to realize the telescopic movement of the support rod body 310. When the support rod body 310 needs to be extended to a certain length, the support rod body 310 is locked in the corresponding position relative to the support body 200 through a locking piece, thereby limiting the movement of the support rod body 310 and providing stable support capacity. In addition, a plurality of first fixing holes 230 are provided on the support body 200, wherein the plurality of first fixing holes 230 are arranged at equal intervals along the length direction of the support body 200, and a plurality of second fixing holes 311 are correspondingly provided on the support rod body 310, wherein the plurality of second fixing holes 311 are arranged at equal intervals along the length direction of the support body 200, wherein the spacing between the first fixing holes 230 is consistent with the spacing between the second fixing holes 311. For example, a row of five equally spaced holes with a diameter of 20 mm and a hole pitch of 100 mm are provided on the support body 200 as the first fixing holes 230, and at least five circular holes with a diameter of 20 mm and a hole pitch of 100 mm are correspondingly provided on the support rod body 310 as the second fixing holes 311. When the support rod body 310 slides back and forth on the support body 200, there are positions corresponding to the first fixing holes 230 and the second fixing holes 311. When the support rod body 310 is extended to the required length, the first fixing hole 230 and the second fixing hole 311 at the corresponding position correspond to each other, and then the locking pin body is passed through the first fixing hole 230 and the second fixing hole 311 in sequence, thereby locking the support rod body 310 on the support body 200.

[0033] In the above structure, a structure in which the support rod body 310 and the support body 200 are movably connected is provided to realize telescopic movement, so that it can better adapt to the support requirements of different pipe diameters. In addition, the support body 200 and the support rod body 310 are provided as a split structure, which can be separated when not in use, so as to facilitate transportation and carrying, and easy installation and disassembly, thereby improving ease of use. The first fixing hole 230, the second fixing hole 311 and the locking pin body are provided to lock the relative position of the support body 200 and the support rod body 310, which makes locking convenient and makes it easier to adjust the telescopic position.

[0034] In addition, if Figure 2 、 3As shown, the telescopic support portion 300 also includes an adjustable telescopic member 320, one end of which is connected to the support rod body 310 and the other end is connected to the support member 400. The adjustable telescopic member 320 is driven by an external force to drive the support member 400 to move telescopically along the extension direction of the support body 200. The adjustable telescopic member 320 includes a double-headed adjusting screw 321, a first nut 322 and a second nut 323. The first nut 322 is fixedly connected to the support rod body 310, and the second nut 323 is fixedly connected to the support member 400. The double-headed adjusting screw 321 includes a first threaded portion 3211 and a second threaded portion 3212 that are arranged opposite to each other. The first threaded portion 3211 is mated with the first nut 322, and the second threaded portion 3212 is mated with the second nut 323. The spiral directions of the first threaded portion 3211 and the second threaded portion 3212 are opposite. The double-ended adjustment screw 321 is provided with an adjustment through-hole 3213. External force can drive the double-ended adjustment screw 321 to rotate through the adjustment through-hole 3213, thereby driving the support member 400 to move. The adjustment telescopic member 320 includes a connecting locking member. The support rod body 310 has a first connecting hole. The connecting locking member can pass through the first connecting hole and the adjustment through-hole 3213 to connect and lock the double-ended adjustment screw 321 to the support rod body 310, thereby limiting the rotation of the double-ended adjustment screw 321.

[0035] In this embodiment, an adjustment telescopic member 320 is provided at one end of the support rod body 310 away from the support body 200, and the adjustment telescopic member 320 includes a double-headed adjustment screw 321, a first nut 322 and a second nut 323. One end of the first nut 322 is fixedly connected to the support rod body 310, and one end of the second nut 323 is fixedly connected to the support member 400, and then the double-headed adjustment screw 321 is placed between the first nut 322 and the second nut 323, wherein the first threaded portion 3211 and the second threaded portion 3212 of the double-headed adjustment screw 321 have opposite rotation directions, and the first threaded portion 3211 and the first nut 322 are matched. The second threaded portion 3212 is connected to the second nut 323. By rotating the double-ended adjusting screw 321, the support member 400 can be driven to move, thereby extending the support distance of the support member 400. When it is necessary to support the pipe diameter, the support rod body 310 is first extended to a certain length so that the support member 400 can pre-support the inner wall of the steel pipe. In order to further improve the supporting capacity, the double-ended adjusting screw 321 is rotated by external force. For example, a screwdriver can be inserted into the adjustment through hole 3213 and the double-ended adjusting screw 321 is rotated to allow the support member 400 to continue to extend, thereby improving the supporting capacity of the pipe wall. The device further adjusts the distance of the support member 400 by setting the adjusting telescopic member 320, thereby adjusting the supporting capacity of the pipe wall and further ensuring the supporting stability of the pipe wall. In addition, by providing a double-ended adjustment screw 321 with the first threaded portion 3211 and the second threaded portion 3212 having opposite rotation directions, the two screws can be moved by two pitches by driving the double-ended adjustment screw 321 one rotation, thereby improving movement efficiency. Furthermore, a first connecting hole is provided on the support rod 310, and an adjustment through-hole 3213 is provided on the double-ended adjustment screw 321. The adjustment through-hole 3213 can be located in the middle of the adjustment screw. After rotating the double-ended adjustment screw 321 to the desired angle, a locking member can be inserted through the first connecting hole and the adjustment through-hole 3213 to lock the rotation of the double-ended adjustment screw 321, thereby preventing the double-ended adjustment screw 321 from loosening due to vibration of the steel pipe during transportation. In one embodiment, the locking member can be a wire structure, and to reduce the opening of the support rod 310, the first connecting hole can be replaced by the first fixing hole 230.

[0036] More specifically, if Figure 3As shown, the first nut 322 is fixed with a first tube body 3221 at one end close to the double-headed adjusting screw 321, and the first tube body 3221 is provided with a first channel running through it along its own axial direction, and the first channel is provided with the same thread structure as the first nut 322, and the first threaded portion 3211 is cooperated with the first channel, and the second nut 323 is fixed with a second tube body 3231 at one end close to the double-headed adjusting screw 321, and the second tube body 3231 is provided with a second channel running through it along its own axial direction, and the second channel is provided with the same thread structure as the second nut 323, and the second threaded portion 3212 is cooperated with the second channel.

[0037] In this embodiment, a first tube body 3221 is provided at an end of the first nut 322 close to the support body 200, and the first threaded portion 3211 of the double-headed adjusting screw 321 cooperates with the first channel, and a second tube body 3231 is provided at an end of the second nut 323 away from the support body 200, and the second threaded portion 3212 cooperates with the second channel, so that the double-headed adjusting screw 321 can move within the first tube body 3221 and the second tube body 3231, which can further improve the adjustment range of the double-headed adjusting screw 321.

[0038] In the specific fixing structure of the plurality of support bodies 200, such as Figure 2 As shown, the fixing portion includes a fixing through slot 210, which is arranged in the middle of the support body 200. The fixing through slots 210 of multiple support bodies 200 are connected, and the multiple support bodies 200 are fixed by passing through the multiple fixing through slots 210 through the tightening bolts. The opening direction of the fixing through slot 210 is consistent with the extension direction of the support body 200, so that the support body 200 can move relative to the tightening bolts.

[0039] In this embodiment, a fixing groove 210 is provided in the middle of the support body 200, and the fixing groove 210 passes through the support body 200 along the thickness direction of the support body 200, and the opening of the fixing groove 210 extends along the length direction of the support body 200. The fixing groove can be a rectangular groove structure. When multiple support bodies 200 are fixed, the multiple support bodies 200 are stacked in sequence along the axial direction of the steel pipe, and the multiple fixing grooves 210 are connected. Then, the fastening bolts 500 are passed through the fixing grooves 210 in sequence to fix the multiple support bodies 200. The multiple support bodies 200 are fixedly connected through the fixing grooves 210. When it is necessary to support steel pipes of different diameters, the fixed positions of the multiple support bodies 200 can be effectively adjusted, so that the fixing point of the support body 200 is always consistent with the center of the steel pipe, effectively avoiding the bending and deformation of the support body 200. For example, in this embodiment, the fixing through-slot 210 is a 100*20mm rectangular through-hole arranged in the middle of the supporting body 200, and the specification of the fastening bolt 500 is an M20 bolt. The fastening bolt 500 is passed through the fixing through-slots 210 of multiple supporting bodies 200 in sequence, thereby fixing the multiple supporting bodies 200 together. When it is necessary to adjust the centers of the multiple supporting bodies 200 to be consistent with the center of the steel pipe, it is only necessary to move the supporting body 200 so that the fastening bolt 500 moves relative to the fixing through-slot 210 in the fixing through-slot 210.

[0040] In the specific structure of the support member 400, as shown in FIG. Figure 1 As shown, the support member 400 includes an abutment portion 410 and a connecting portion 420 connected to each other. The connecting portion 420 is fixedly connected to the telescopic support portion 300, and the abutment portion 410 abuts against the inner wall of the pipe 100. The abutment portion 410 is an arc-shaped structure and is provided with an elastic buffer pad 430.

[0041] In this embodiment, the abutment portion 410 of the support member 400 is an arc-shaped structure that can better adapt to the inner wall structure of the steel pipe, so that the abutment portion 410 can better fit the inner wall, thereby improving the stability of the support. In order to better protect the inner wall of the steel pipe, an elastic buffer pad 430 can be provided on the abutment portion 410.

[0042] The above description of the disclosed embodiments will enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A pipe inner support device, used for installation on the inner wall of a pipe, characterized in that: It includes multiple support bodies and fixed parts arranged on the support bodies, telescopic support parts are provided at opposite ends of the support bodies, the telescopic support parts can be telescoped along the extension direction of the support body, one end of the telescopic support part is connected to a support member, and the support member can be telescoped and moved with the telescopic support part to abut and support the inner wall of the pipe, multiple support bodies are connected by the fixed parts, and the extension direction of the support body is perpendicular to the axial direction of the pipe, and the extension directions of the multiple support bodies intersect.

2. A pipe inner support device according to claim 1, characterized in that: The telescopic support portion includes a support rod body, the support body is provided with a telescopic channel, the support rod body is movably arranged in the telescopic channel and can move along the telescopic channel, and the support rod body is locked with the support body by a locking piece to limit the movement of the support rod body.

3. A pipe inner support device according to claim 2, characterized in that: The telescopic support portion includes an adjustable telescopic member, one end of which is connected to the support rod body, and the other end is connected to the support member. The adjustable telescopic member is driven by external force to drive the support member to move telescopically along the extension direction of the support body.

4. A pipe inner support device according to claim 3, characterized in that: The adjusting telescopic part includes a double-headed adjusting screw, a first nut and a second nut. The first nut is fixedly connected to the support rod body, and the second nut is fixedly connected to the support member. The double-headed adjusting screw includes a first threaded portion and a second threaded portion that are relatively arranged. The first threaded portion is cooperated with the first nut, and the second threaded portion is cooperated with the second nut. The spiral directions of the first threaded portion and the second threaded portion are opposite.

5. The pipe inner support device according to claim 4, characterized in that: The double-headed adjusting screw is provided with an adjusting through hole, and an external force can drive the double-headed adjusting screw to rotate through the adjusting through hole to drive the support member to move.

6. The pipe inner support device according to claim 5, characterized in that: The adjusting telescopic member includes a connecting locking member, and the supporting rod body is provided with a first connecting hole. The connecting locking member can pass through the first connecting hole and the adjusting through hole to connect and lock the double-headed adjusting screw with the supporting rod body to limit the rotation of the double-headed adjusting screw.

7. The pipe inner support device according to claim 5, characterized in that: A first tube body is fixed to one end of the first nut close to the double-headed adjusting screw, the first tube body is provided with a first channel running through the first tube body along its own axial direction, the first channel is provided with the same thread structure as the first nut, and the first threaded portion is cooperated and connected with the first channel, and a second tube body is fixed to one end of the second nut close to the double-headed adjusting screw, the second tube body is provided with a second channel running through the first tube body along its own axial direction, the second channel is provided with the same thread structure as the second nut, and the second threaded portion is cooperated and connected with the second channel.

8. The pipeline inner support device according to claim 2, characterized in that: The support body is provided with a plurality of first fixing holes, which are communicated with the telescopic channel, and the plurality of first fixing holes are evenly spaced along the extension direction of the telescopic channel. The support rod body is provided with a plurality of second fixing holes, and the plurality of second fixing holes are evenly spaced along the extension direction of the support rod body. When the support rod body moves along the telescopic channel, the first fixing holes are correspondingly communicated with the second fixing holes. The locking member includes a locking pin body, and the locking pin body can pass through the first fixing hole and the second fixing hole to lock the support body and the support rod body.

9. The pipeline inner support device according to claim 1, characterized in that: The fixing portion includes a fixing through-slot, which is arranged in the middle of the supporting body. The fixing through-slots of multiple supporting bodies are connected, and the multiple supporting bodies are fixed by passing through the multiple fixing through-slots with a tightening bolt. The opening direction of the fixing through-slot is consistent with the extension direction of the supporting body, so that the supporting body can move relative to the tightening bolt.

10. The pipeline inner support device according to claim 1, characterized in that: The support member includes an abutment portion and a connecting portion that are connected to each other. The connecting portion is fixedly connected to the telescopic support portion. The abutment portion abuts against the inner wall of the pipe. The abutment portion is an arc-shaped structure. The convex surface of the abutment portion can abut against the inner wall of the pipe. The abutment portion is provided with an elastic buffer pad.

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