Telescopic pull rod pipe connecting device and manufacturing method thereof

Abstract

The invention discloses a telescopic pull rod pipe connecting device and a manufacturing method thereof, and belongs to the technical field of engineering structure force bearing parts. The telescopic pull rod pipe connecting device is characterized in that an embedded pipe clamping module and an outer wrapping pipe clamping module are arranged at the two ends of a first composite pipe and the two ends of a second composite pipe which are matched in pipe diameter; the externally-wrapped pipe clamping module at one end of the first composite pipe can be sleeved with the internally-embedded pipe clamping module at one end of the second composite pipe and can penetrate out of the externally-wrapped pipe clamping module at the other end of the second composite pipe; the embedded pipe clamping module at the other end of the first composite pipe can be sleeved with the embedded pipe clamping module at one end of the second composite pipe and is connected with the outer wrapping pipe clamping module at the other end of the second composite pipe in a clamped mode, a pull rod section is formed, and modular splicing is achieved. The embedded clamping pipe module and the outer wrapping clamping pipe module are connected in a clamped mode to form the pull rod section, and the high bearing capacity and free stretching and retracting requirements of the connecting device of the large-size composite telescopic pull rod can be met.

Description

Technical Field

[0001] This invention relates to a telescopic tie rod tube connection device and its manufacturing method, belonging to the technical field of load-bearing components in engineering structures. Background Technology

[0002] Fiber-reinforced composite materials possess characteristics such as lightweight, high strength, corrosion resistance, and good designability, and have been gradually applied in engineering structures in aerospace, marine engineering, energy and power, and civil engineering. Their outstanding advantages of being lightweight and high strength make them particularly suitable for modular repair beams and support structures where significant lightweighting is required. For some of the main load-bearing components in composite repair beams or support structures, such as the main beams and tension rods of tensioned beam structures, the tie rods of cable-stayed and suspension structures, and the piles of support structures, in addition to meeting high load-bearing requirements, there are often special requirements for miniaturization of transport volume and rapid deployment, considering the needs for convenient transportation and rapid erection.

[0003] Currently, common methods for connecting composite material pipe fittings mainly include bolting, riveting, and adhesive bonding. However, for bolting and riveting, not only does drilling weaken the effective cross-section of the composite material pipe and cause stress concentration and local failure at the hole end, resulting in limited joint connection efficiency and unsuitability for high-load-bearing main load-bearing components, but bolts and rivets are also not conducive to the rapid assembly, free expansion and contraction, and limiting of expansion and contraction between telescopic nested pipes. For adhesive bonding, when directly using adhesive to connect and limit adjacent composite material pipes, the biggest problem is that the joint cannot be disassembled after the adhesive cures, making it impossible to achieve free expansion and contraction and repeated assembly and use of composite material pipes of different diameters. When metal pipes are first installed on the inner and outer walls of the composite material pipe and then adhesive bonded, and then the inner and outer metal pipes are used to limit the pipe fittings and achieve free expansion and contraction, the problem of low peel strength of adhesive bonding, making it difficult to transmit large loads and unsuitable for high-load-bearing main load-bearing components cannot be avoided. In addition, there are shortcomings such as unstable process, great susceptibility to environmental influences, and poor durability. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a telescopic tie rod tube connection device and its manufacturing method. While improving the connection strength, it facilitates the transportation, rapid deployment and connection of the rods, and solves the problems of inconvenient transportation of long integral composite material tubes, low construction efficiency of traditional assembled composite material tubes, and inability of the connection to withstand high loads.

[0005] To solve the above-mentioned technical problems, the present invention is implemented using the following technical solution: The present invention provides a telescopic tie rod tube connection device, comprising multiple telescopically connected tie rod segments; each tie rod segment includes a first composite tube and a second composite tube with matching pipe diameters; wherein, the diameter of the first composite tube is smaller than the diameter of the second composite tube, and one end of the first composite tube is sleeved in the second composite tube and can extend and retract along the axial direction of the second composite tube. Both ends of the first composite tube and both ends of the second composite tube are provided with an embedded clamping module and an outer clamping module; The outer clamping module at one end of the first composite tube can be inserted into the inner clamping module at one end of the second composite tube and pass out from the outer clamping module at the other end of the second composite tube. The embedded clamping module at the other end of the first composite tube can be fitted into the embedded clamping module at one end of the second composite tube and engaged with the outer clamping module at the other end of the second composite tube to form a pull rod section.

[0006] Furthermore, the first composite tube and the second composite tube are cylindrical or rectangular cross-section tubes.

[0007] Furthermore, both the first composite tube and the second composite tube are equipped with a traction mechanism at their ends.

[0008] Furthermore, the embedded clamping tube module includes an embedded tapered connecting tube, an embedded support tube, and a first end connecting disc that match the diameter of the first composite tube or the second composite tube; The embedded tapered connecting tube and the embedded support tube form a first covering layer that extends through both ends. The first end connecting plate is located at one end of the first covering layer and is fixedly connected to the embedded tapered connecting tube and the embedded support tube, respectively. The end of the first composite tube or the second composite tube enters from the other end of the first covering layer and is fixedly connected to the embedded tapered connecting tube and the embedded support tube, respectively.

[0009] Furthermore, the first end plate is a separate disc, an integral disc, or multiple separate wedge-shaped blocks.

[0010] Furthermore, the contact surfaces of the embedded tapered connecting tube with the first composite tube or the second composite tube, and the contact surfaces of the embedded support tube with the first composite tube or the second composite tube, are provided with toothed structures or colloidal layers to increase the bonding force.

[0011] Furthermore, the outer clamping pipe module includes an outer tapered connecting pipe, an outer sleeve, and a second end connecting disc that match the diameter of the first composite pipe or the second composite pipe; The outer tapered connecting pipe and the outer sleeve form a second covering layer that extends through both ends. The second end connecting disc is located at one end of the second covering layer and is fixedly connected to the outer tapered connecting pipe and the outer sleeve, respectively. The end of the first composite tube or the second composite tube enters from the other end of the second covering layer and is fixedly connected to the outer tapered connecting tube and the outer sleeve, respectively.

[0012] Furthermore, the second end plate is a separate disc, an integral disc, or multiple separate wedge-shaped blocks.

[0013] Furthermore, the contact surfaces of the outer conical connecting tube with the first composite tube or the second composite tube, and the contact surfaces of the outer sleeve with the first composite tube or the second composite tube, are provided with toothed structures or colloidal layers to increase the bonding force.

[0014] Another aspect of the present invention provides a method for manufacturing a telescopic tie rod tube connecting device, comprising: The embedded tapered connecting tube and the embedded support tube are fixed to one end of the first composite tube and one end of the second composite tube by means of cold extrusion, interference fit or adhesive bonding. The first end plate is welded to the end of the embedded tapered connecting pipe and the end of the embedded support pipe, forming an embedded clamping pipe module at one end of the first composite pipe and one end of the second composite pipe, respectively. The outer tapered connecting tube and the outer sleeve are fixed to one end of the first composite tube and the other end of the second composite tube by means of cold extrusion, interference fit or adhesive connection; The second end connecting disc is welded to the ends of the outer tapered connecting pipe and the outer sleeve, forming an outer clamping pipe module at one end of the first composite pipe and the other end of the second composite pipe, respectively. The outer clamping module at one end of the first composite tube is inserted into the inner clamping module at one end of the second composite tube until the first composite tube is completely retracted into the second composite tube, thus obtaining the tie rod section.

[0015] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: 1. This invention sets embedded clamping modules and external clamping modules at both ends of a first and second composite pipe with matching diameters. This allows the external clamping module at one end of the first composite pipe to be inserted into the embedded clamping module at one end of the second composite pipe and protrude from the external clamping module at the other end of the second composite pipe. Similarly, the embedded clamping module at the other end of the first composite pipe can be inserted into the embedded clamping module at one end of the second composite pipe and engage with the external clamping module at the other end of the second composite pipe to form a tie rod segment. Tie rod segments can also be combined and extended using different embedded clamping modules and external clamping modules, achieving modular splicing and facilitating transportation. The engagement of the embedded clamping module and the external clamping module to form a tie rod segment meets the high load-bearing capacity and free expansion / contraction requirements of large-size composite material telescopic tie rods, solving the problems of inconvenient transportation of long, integral composite material pipe fittings, low construction efficiency of traditional assembled composite material pipe fittings, and the inability of connections to withstand high loads.

[0016] 2. This invention achieves efficient force transmission of the internal composite pipe by forming a first covering layer through both ends between the embedded tapered connecting pipe and the embedded support pipe, which is connected to one end of the composite pipe with the first end connecting disc; and by forming a second covering layer through both ends between the outer tapered connecting pipe and the outer sleeve, which is connected to the other end of the composite pipe with the second end connecting disc, achieving efficient force transmission of the external composite pipe; when the embedded clamping pipe module and the outer clamping pipe module are engaged, the internal pipe and the external pipe can transmit force in a coordinated manner, thus significantly enhancing the axial bearing capacity of the internal pipe and the entire tie rod section.

[0017] 3. The present invention adopts the method of clamping the inner conical connecting pipe and the outer conical connecting pipe to form a fixed connection, which is beneficial to enhance the radial pre-compression stress of the interface through the conical structure during the joint stretching process, effectively making up for the pre-stress loss caused by the Poisson effect. Therefore, it can enhance the force transmission efficiency between the inner clamping pipe module and the outer clamping pipe module and the composite pipe, thereby improving the load-bearing capacity of the composite material telescopic tie rod pipe connection. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of a telescopic tie rod tube connecting device provided in Embodiment 1 of the present invention; Figure 2 This is a schematic diagram of the connection between the first composite tube and the second composite tube provided in Embodiment 1 of the present invention (showing that the second end connecting disc is an integral disc).

[0019] Figure 3 This is a schematic diagram showing the connection between the embedded clamping module and the outer clamping module provided in Embodiment 1 of the present invention; Figure 4 This is a schematic diagram of the embedded clamping tube module provided in Embodiment 1 of the present invention; Figure 5 This is a schematic diagram of the structure of the outer clamping tube module provided in Embodiment 1 of the present invention; Figure 6 This is a schematic diagram of the connection between the first composite tube and the second composite tube provided in Embodiment 1 of the present invention (showing that the second end connecting disc is composed of multiple separate wedge-shaped blocks). Figure 7 This is a cross-sectional view of the connection between the embedded clamping module and the outer clamping module provided in Embodiment 1 of the present invention; Figure 8 This is a schematic diagram of the tooth structure provided in Embodiment 1 of the present invention (showing rectangular tooth and spiral tooth structures). Figure 9 This is a schematic diagram of the first tooth interface in the embedded clamping tube module provided in Embodiment 1 of the present invention; Figure 10 This is a schematic diagram of the second tooth interface in the outer clamping tube module provided in Embodiment 1 of the present invention; Figure 11This is a schematic diagram of the overall structure of a telescopic tie rod tube connecting device provided in Embodiment 2 of the present invention; Figure 12 This is a schematic diagram of the connection between the first composite tube and the second composite tube provided in Embodiment 2 of the present invention; Figure 13 This is a schematic diagram of the forming of the embedded clamping tube module and the outer clamping tube module provided in Embodiment 3 of the present invention (P in the figure indicates the direction of the clamping force). Figure 14 This is a schematic diagram of the retractable tie rod section provided in Embodiment 3 of the present invention; Figure 15 This is a schematic diagram of the connection between the tie rod segment and the main load-bearing structure provided in Embodiment 1 of the present invention.

[0020] In the diagram: 1. Tie rod section; 101. First composite tube; 102. Second composite tube; 2. Embedded clamping tube module; 201. Embedded tapered connecting tube; 202. Embedded support tube; 203. First end connecting disc; 204. First covering layer; 3. Outer clamping tube module; 301. Outer tapered connecting tube; 302. Outer sleeve; 303. Second end connecting disc; 304. Second covering layer; 4. First tooth interface; 5. Second tooth interface; 6. Main load-bearing structure; 7. Vertical strut; 8. Extrusion die; 9. Traction mechanism. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and should not be used to limit the scope of protection of the present invention. Example 1

[0022] like Figure 1 As shown, a telescopic tie rod tube connection device includes multiple telescopically connected tie rod sections 1; each tie rod section 1 includes a first composite tube 101 and a second composite tube 102 with matching tube diameters; in this embodiment, the first composite tube 101 and the second composite tube 102 are both cylindrical cross-section tubes, and the diameter of the first composite tube 101 is smaller than the diameter of the second composite tube 102. Both ends of the first composite tube 101 and the second composite tube 102 are provided with an outer clamping module 3 and an inner clamping module 2. The only difference between the outer clamping module 3 and the inner clamping module 2 on the different composite tubes is their size. like Figure 1 and Figure 2 As shown, for ease of understanding, the description is based on the outer clamping module 3 and the inner clamping module 2 at both ends of the first composite tube 101: the left end of the first composite tube 101 is provided with an outer clamping module 3, and the right end is provided with an inner clamping module 2. like Figure 3As shown, the embedded clamping tube module 2 includes an embedded tapered connecting tube 201, an embedded support tube 202, and a first end connecting disc 203, which are matched with the diameter of the first composite tube 101. The first end connecting disc 203 is a separate disc, an integral disc, or multiple separate wedge-shaped blocks. In this embodiment, the first end connecting disc 203 is an integral disc. like Figure 4 As shown, a first covering layer 204 with both ends through is formed between the embedded tapered connecting pipe 201 and the embedded support pipe 202. The first end connecting disc 203 is located at the right end of the first covering layer 204 and is fixedly connected to the embedded tapered connecting pipe 201 and the embedded support pipe 202 respectively. The right end of the first composite pipe 101 enters from the left end of the first covering layer 204 and is fixedly connected to the embedded tapered connecting pipe 201 and the embedded support pipe 202 respectively. like Figure 3 and Figure 5 and Figure 6 As shown, the outer clamping pipe module 3 includes an outer tapered connecting pipe 301 matching the diameter of the first composite pipe 101, an outer sleeve 302, and a second end connecting disc 303; the second end connecting disc 303 is a separate disc, an integral disc, or multiple separate wedge-shaped blocks. In this embodiment, the second end connecting disc 303 adopts an integral disc, such as... Figure 5 As shown, or multiple separate wedge-shaped blocks can be used, such as Figure 6 As shown.

[0023] A second covering layer 304 is formed between the outer tapered connecting pipe 301 and the outer sleeve 302, with the second end connecting disc 303 located at the left end of the second covering layer 304 and fixedly connected to the outer tapered connecting pipe 301 and the outer sleeve 302 respectively; the left end of the first composite pipe 101 enters from the right end of the second covering layer 304 and is fixedly connected to the outer tapered connecting pipe 301 and the outer sleeve 302 respectively.

[0024] like Figure 1 , Figure 3 and Figure 7 As shown, the outer clamping module 3 at the left end of the first composite tube 101 is fitted into the inner clamping module 2 at the right end of the second composite tube 102, moves along the axial direction of the second composite tube 102, and passes out from the outer clamping module 3 at the left end of the second composite tube 102. The embedded clamping module 2 at the right end of the first composite tube 101 can be inserted into the embedded clamping module 2 at the right end of the second composite tube 102, move along the axial direction of the second composite tube 102, and engage with the outer clamping module 3 at the left end of the second composite tube 102 to form the pull rod section 1. Specifically: During the movement of the embedded clamping module 2 at the right end of the first composite tube 101, the tapered outer contour of the embedded tapered connecting tube 201 contacts and presses against the tapered inner contour of the outer tapered connecting tube 301 at the left end of the second composite tube 102. Finally, the embedded clamping module 2 at the right end of the first composite tube 101 and the outer clamping module 3 at the left end of the second composite tube 102 are snapped together, which can meet the high load-bearing capacity and free expansion and contraction requirements of the connection device of the large-size composite material telescopic tie rod.

[0025] like Figure 7 , Figure 8 , Figure 9 and Figure 10 As shown, in order to improve the connection strength between the embedded clamping module 2, the outer clamping module 3 and the composite tube, taking the embedded clamping module 2 at the right end of the first composite tube 101 and the outer clamping module 3 at the left end of the second composite tube 102 as an example: The contact surface between the embedded tapered connecting tube 201 and the first composite tube 101 is provided with a toothed structure or a colloid layer to increase the bonding force. In this embodiment, a toothed structure is used. The contact surface between the outer sleeve tube 302 and the second composite tube 102 is provided with a toothed structure to increase the bonding force. The toothed structure is a rectangular tooth, a spiral tooth, or a triangular tooth. If even higher requirements are needed for connection strength, toothed structures can also be opened on the contact surface between the embedded support tube 202 and the first composite tube 101, and toothed structures can also be opened on the contact surface between the outer tapered connecting tube 301 and the second composite tube 102. It should be noted that, in this embodiment, the tooth structure formed on the first composite tube 101 is the first tooth interface 4, and the tooth structure formed on the second composite tube 102 is the second tooth interface 5. When the fully extended tie rod section 1 is subjected to an axial external force, the axial external force is first transmitted to the second composite tube 102. Then, part of the external force is transmitted to the outer tapered connecting tube 301 through the contact interface between the second composite tube 102 and the outer tapered connecting tube 301. Another part of the external force is transmitted to the outer sleeve 302 through the second tooth interface 5 and to the outer tapered connecting tube 301 through the second end connecting disc 303. Then, the external force is transmitted to the inner tapered connecting tube 201. The external force transmitted to the embedded tapered connecting tube 201 is transmitted to the first composite tube 101 through the first tooth interface 4, and the force of the contact interface between the embedded support tube 202 and the first composite tube 101 is transmitted to the first composite tube 101 through the first end connecting disc 203. Alternatively, when the fully extended tie rod section 1 is subjected to an axial external force, the axial external force is first transmitted to the first composite tube 101, and then transmitted to the embedded tapered connecting tube 201 through the first tooth interface 4. At the same time, the force of the contact interface between the embedded support tube 202 and the first composite tube 101 is transmitted to the embedded tapered connecting tube 201 through the first end connecting disc 203. Finally, the external force on the embedded tapered connecting tube 201 is transmitted to the outer tapered connecting tube 301. The external force transmitted to the outer tapered connecting pipe 301 is transmitted to the second composite pipe 102 through the contact interface between the outer tapered connecting pipe 301 and the second composite pipe 102. The other part of the external force is transmitted to the outer sleeve 302 through the second end connecting disc 303 and to the second composite pipe 102 through the second tooth interface 5. Therefore, the embedded tapered connecting tube 201 that contacts the first tooth interface 4 and the outer tapered connecting tube 301 that contacts the second tooth interface 5 have conical contour surfaces. In addition to facilitating the telescopic nesting of the connecting device in terms of structure, they also help to enhance the radial pre-compression stress of the interface during the stretching process and effectively compensate for the pre-stress loss caused by the Poisson effect. Thus, they can significantly enhance the force transmission efficiency between the embedded clamping tube module 2 and the outer clamping tube module 3 and the first composite tube 101 or the second composite tube 102, thereby improving the force transmission efficiency and load-bearing capacity of the entire tie rod section 1. In addition, the first end connecting disc 203 and the second end connecting disc 303 can respectively connect the embedded tapered connecting tube 201 and the embedded support tube 202, and the tapered connecting tube and the outer sleeve 302 into one unit, so that each component has the ability to transmit force efficiently and collaboratively, which can significantly enhance the load-bearing capacity of the embedded support tube 202, the outer sleeve 302 and the entire tie rod section 1. like Figure 14 As shown, both the first composite tube 101 and the second composite tube 102 are provided with a traction mechanism 9 at their ends. In this embodiment, the traction mechanism 9 is a tension rope. The tension rope can be used to pull the first composite tube 101 to move axially along the second composite tube 102, or to pull the second composite tube 102 to move axially along the adjacent tie rod section.

[0026] Working principle like Figure 14 As shown, during transportation, the first composite tube 101 retracts into the interior of the second composite tube 102, saving transportation space; as Figure 1As shown, during construction, the outer clamping module 3 at the left end of the first composite tube 101 is moved out from the left end of the second composite tube. The outer clamping module 3 at the left end of the first composite tube 101 passes through the outer clamping module 3 at the left end of the second composite tube 102. The inner clamping module 2 at the right end of the first composite tube 101 moves axially inside the second composite tube 102. The tapered outer contour of the inner tapered connecting pipe 201 at the right end of the first composite tube 101 contacts and squeezes against the tapered inner contour of the outer tapered connecting pipe 301 at the left end of the second composite tube 102 to form a constraint effect. Finally, the inner clamping module 2 at the right end of the first composite tube 101 and the outer clamping module 3 at the left end of the second composite tube 102 are snapped together. At this time, the tie rod section 1 has been fully unfolded. like Figure 15 As shown, the fully extended tie rod section 1 is placed below the main load-bearing structure 6, and a vertical strut 7 is added in the middle of the main load-bearing structure 6. Then, the tie rod section 1 is connected to both ends of the main load-bearing structure 6 by mechanical connection or welding, and then the tie rod section 1 is connected to the vertical strut 7 by mechanical connection or welding, thus completing the rapid erection and performance improvement of the main load-bearing structure. Example 2

[0027] The difference between this embodiment and Embodiment 1 is that, as Figure 11 and Figure 12 As shown, both the first composite tube 101 and the second composite tube 102 are square cross-section tubes; the outer contour surface of the embedded tapered connecting tube 201 and the inner contour surface of the outer tapered connecting tube 301 are wedge-shaped. The inner contour surface of the embedded tapered connecting tube 201 matches the outer contour surface of the first composite tube 101, the outer contour surface of the embedded support tube 202 matches the inner contour surface of the first composite tube 101, the outer contour surface of the outer tapered connecting tube 301 matches the inner contour surface of the second composite tube 102, and the inner contour surface of the outer sleeve 302 matches the outer contour surface of the second composite tube 102. Example 3

[0028] A method for manufacturing a telescopic tie rod tube connecting device includes: The embedded tapered connecting tube and the embedded support tube are fixed to the right ends of the first composite tube and the second composite tube by cold extrusion, interference fit, or adhesive bonding. In this embodiment, cold extrusion is performed using extrusion die 8. Figure 13 As shown; The first end connecting disc 203 is welded to the ends of the embedded tapered connecting pipe 201 and the embedded support pipe 202, forming the embedded clamping pipe module 2 at the right end of the first composite pipe 101 and the right end of the second composite pipe 102 respectively. The outer tapered connecting tube 301 and the outer sleeve 302 are fixed to the left end of the first composite tube 101 and the left end of the second composite tube 102 by cold extrusion, interference fit, or adhesive bonding; in this embodiment, cold extrusion is performed using an extrusion die 8. Figure 13 As shown; The second end connecting disc 303 is welded to the ends of the outer tapered connecting pipe 301 and the outer sleeve 302, forming the outer clamping pipe module 3 at the left end of the first composite pipe 101 and the left end of the second composite pipe 102 respectively. The outer clamping module 3 at the left end of the first composite tube 101 is inserted into the inner clamping module 2 at the right end of the second composite tube 102 until the first composite tube 101 is completely retracted into the second composite tube 102, thus obtaining the retracted tie rod section 1. Figure 14 As shown.

[0029] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0030] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixed connection" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art will understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0031] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A telescopic tie rod tube connecting device, characterized in that, It includes multiple telescopically connected tie rod sections (1); each tie rod section (1) includes a first composite tube (101) and a second composite tube (102) with matching pipe diameters; wherein, the pipe diameter of the first composite tube (101) is smaller than the pipe diameter of the second composite tube (102), and one end of the first composite tube (101) is sleeved in the second composite tube (102) and can extend and retract along the axial direction of the second composite tube (102); Both ends of the first composite tube (101) and both ends of the second composite tube (102) are provided with an embedded clamping module (2) and an outer clamping module (3); The outer clamping module (3) at one end of the first composite tube (101) can be inserted into the inner clamping module (2) at one end of the second composite tube (102) and pass out from the outer clamping module (3) at the other end of the second composite tube (102); The embedded clamping module (2) at the other end of the first composite tube (101) can be inserted by the embedded clamping module (2) at one end of the second composite tube (102) and snapped into the outer clamping module (3) at the other end of the second composite tube (102) to form a pull rod section (1).

2. The telescopic tie rod tube connecting device according to claim 1, characterized in that, The first composite tube (101) and the second composite tube (102) are cylindrical or rectangular cross-section tubes.

3. The telescopic tie rod tube connecting device according to claim 1, characterized in that, The ends of the first composite tube (101) and the second composite tube (102) are both provided with traction mechanisms (9).

4. The telescopic tie rod tube connecting device according to claim 1, characterized in that, The embedded clamping module (2) includes an embedded tapered connecting pipe (201), an embedded support pipe (202), and a first end connecting disc (203) that match the diameter of the first composite pipe (101) or the second composite pipe (102). The embedded conical connecting tube (201) and the embedded support tube (202) form a first covering layer (204) that extends through both ends. The first end connecting plate (203) is located at one end of the first covering layer (204) and is fixedly connected to the embedded conical connecting tube (201) and the embedded support tube (202) respectively. The end of the first composite tube (101) or the second composite tube (102) enters from the other end of the first covering layer (204) and is fixedly connected to the embedded tapered connecting tube (201) and the embedded support tube (202) respectively.

5. The telescopic tie rod tube connecting device according to claim 4, characterized in that, The first end plate (203) is a separate disc, an integral disc, or multiple separate wedge-shaped blocks.

6. The telescopic tie rod tube connecting device according to claim 4, characterized in that, The contact surfaces of the embedded tapered connecting tube (201) with the first composite tube (101) or the second composite tube (102), and the contact surfaces of the embedded support tube (202) with the first composite tube (101) or the second composite tube (102), are all provided with toothed structures to increase the bonding force.

7. The telescopic tie rod tube connecting device according to claim 1, characterized in that, The outer clamping pipe module (3) includes an outer tapered connecting pipe (301), an outer sleeve (302), and a second end connecting disc (303) that match the diameter of the first composite pipe (101) or the second composite pipe (102). The outer tapered connecting pipe (301) and the outer sleeve (302) form a second covering layer (304) that runs through both ends. The second end connecting disc (303) is located at one end of the second covering layer (304) and is fixedly connected to the outer tapered connecting pipe (301) and the outer sleeve (302) respectively. The end of the first composite tube (101) or the second composite tube (102) enters from the other end of the second covering layer (304) and is fixedly connected to the outer tapered connecting tube (301) and the outer sleeve (302) respectively.

8. The telescopic tie rod tube connecting device according to claim 7, characterized in that, The second end plate (303) is a separate disc, an integral disc, or multiple separate wedge-shaped blocks.

9. The telescopic tie rod tube connecting device according to claim 7, characterized in that, The contact surfaces of the outer conical connecting tube (301) with the first composite tube (101) or the second composite tube (102), and the contact surfaces of the outer sleeve (302) with the first composite tube (101) or the second composite tube (102), are provided with toothed structures or colloidal layers to increase the bonding force.

10. A method for manufacturing a telescopic tie rod tube connecting device as described in any one of claims 1 to 9, characterized in that, include: The embedded tapered connecting tube and the embedded support tube are fixed to one end of the first composite tube and one end of the second composite tube by means of cold extrusion, interference fit or adhesive bonding. The first end plate is welded to the end of the embedded tapered connecting pipe and the end of the embedded support pipe, forming an embedded clamping pipe module at one end of the first composite pipe and one end of the second composite pipe, respectively. The outer tapered connecting tube and the outer sleeve are fixed to one end of the first composite tube and the other end of the second composite tube by means of cold extrusion, interference fit or adhesive connection; The second end connecting disc is welded to the ends of the outer tapered connecting pipe and the outer sleeve, forming an outer clamping pipe module at one end of the first composite pipe and the other end of the second composite pipe, respectively. The outer clamping module at one end of the first composite tube is inserted into the inner clamping module at one end of the second composite tube until the first composite tube is completely retracted into the second composite tube, thus obtaining the tie rod section.

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