Anti-jumping device of small pipe jacking machine for reinforced concrete pile cutting field test

Abstract

The invention relates to the technical field of small-sized pipe jacking machines, in particular to a small-sized pipe jacking machine anti-jumping device for a reinforced concrete pile cutting field test, which comprises a pipe jacking machine, a guide rail and three fixing assemblies, the pipe jacking machine is arranged on the guide rail, the fixing assemblies are circumferentially arranged along the outer surface of the pipe jacking machine, and each fixing assembly comprises a connecting piece and a chain. The connecting piece is arranged in the circumferential direction of the pipe jacking machine through the chain, the anti-jumping assembly is fixedly connected to the lower portion of the connecting piece located at the bottom of the fixing assembly located in the middle, the anti-jumping assembly is provided with a thread-like buffering piece, and the thread-like buffering piece comprises a supporting piece with an internal thread and a connecting shaft with an external thread. According to the jumping-preventing device of the small-sized pipe jacking machine for the field test of cutting the reinforced concrete pile, a thread-like buffer piece is arranged in a lower frame at the bottom of a fixing assembly located in the middle; the force which enables the tube push bench to generate the trend of jumping up and down can be counteracted through the meshed connection of the threads between the supporting piece with the internal threads and the connecting shaft with the external threads in the thread-like buffering piece.

Description

Technical Field

[0001] This invention relates to the field of pipe jacking machine technology, specifically to a small-scale anti-jump device for pipe jacking machines used in field tests of cutting reinforced concrete piles. Background Technology

[0002] For sensitive projects involving close proximity to subway stations, railways, airports, etc., pipe jacking is typically used to ensure controllable deformation of adjacent structures during excavation. The pipe jacking system usually involves using a small pipe jacking machine (within 1.5 m in diameter) to jack several steel pipes into the soil, which are then connected to form a unified structure. However, in actual projects, the steel pipes need to traverse the underlying soil and rock strata, inevitably encountering reinforced concrete structures (such as pile foundations, tunnel segments, and culverts). Due to the limited driving capacity and cutterhead cutting force of small pipe jacking machines, traditional small pipe jacking machines cannot meet the construction requirements. Therefore, it is necessary to conduct intensive modifications and upgrades to the cutterhead and drive system of small pipe jacking machines, and to verify their driving and cutting capabilities through field tests of small pipe jacking machines cutting reinforced concrete piles. To further observe the phenomena of the cutting test, the small pipe jacking machine needs to be erected on guide rails and cut a reinforced concrete pile (1 m in diameter) without soil covering it. Because of their small diameter, small pipe jacking machines can experience a sudden increase in torque when cutting large-diameter reinforced concrete piles, especially when encountering or being pulled by reinforcing bars. This can easily cause the small pipe jacking machine to jump or even flip off the guide rail, which is not conducive to the smooth progress of the test.

[0003] Regarding the currently disclosed technology: Patent application number CN201810178380.6 utilizes several sets of wing plates evenly installed and fixed on the rear cylinder of the pipe jacking machine. When the pipe jacking machine advances, the fan plates on the wing plates insert into the soil to balance the reaction torque of the cutterhead, thereby preventing the machine head from rotating during the jacking process. The problem is that the resistance generated by the fan plates on the wing plates inserting into the soil will affect the jacking efficiency of the pipe jacking machine, and also increase the disturbance to the surrounding soil, which is not conducive to settlement control. More importantly, this patent is mainly for the jacking stage after the pipe jacking machine has completely entered the soil. For the field test of small pipe jacking machine cutting reinforced concrete piles mentioned in this patent, the pipe jacking machine is placed on the guide rail and does not involve the soil, so it cannot solve the jumping problem in the field test of small pipe jacking machine cutting reinforced concrete piles. The patent application CN201811270721.9 utilizes several clamping components and a tension chain. By loading the clamping components of this device, the friction force against reverse torsion of the pipe jacking machine is increased, enabling the pipe jacking machine to break rock with normal torque. The problem is that when the pipe jacking machine encounters a reinforced concrete column, if the column is stuck in the lower area of ​​the cutterhead and the resistance at the top of the cutterhead is small, the huge jacking force may cause the head of the pipe jacking machine to "pry up" upward, resulting in the machine head shifting upward and the entire pipe jumping upward for a short time. Relying on the tension chain for fixation will cause the chain to break, resulting in the failure of the anti-rotation device.

[0004] Therefore, a small-scale anti-jump device for pipe jacking machines used in field tests of cutting reinforced concrete piles is proposed. Summary of the Invention

[0005] One of the technical problems to be solved by this application is the jump that occurs when a small pipe jacking machine is cutting reinforced concrete piles.

[0006] To solve the above-mentioned technical problems, this application provides a small anti-jump device for a pipe jacking machine in field testing of cutting reinforced concrete piles, including a pipe jacking machine, a guide rail, and three fixing components;

[0007] The pipe jacking machine is mounted on a guide rail, and the fixing components are arranged circumferentially along the outer surface of the pipe jacking machine.

[0008] The fixing components include connectors and chains, which secure the connectors to the circumference of the pipe jacking machine.

[0009] An anti-slip component is fixedly connected below the connector at the bottom of the fixed component located in the middle position. The anti-slip component is equipped with a threaded buffer, which includes a support with internal threads and a connecting shaft with external threads.

[0010] In some embodiments, the connector includes a H-shaped outer frame, a connecting rod disposed within the H-shaped outer frame, lugs disposed on the left and right sides of the H-shaped outer frame, a connecting hole disposed on the lugs for connecting a chain, and a roller disposed on the connecting rod.

[0011] In some embodiments, the anti-jumping component includes a lower frame fixedly connected to a connector located at the bottom of the intermediate fixing component, connecting rods arranged on the left and right sides of the lower frame, and through slots arranged on the front and rear sides of the lower frame.

[0012] In some embodiments, a threaded buffer is provided in the lower frame. The threaded buffer includes a support member that can pass through the through slot and a connecting shaft that connects the two supports.

[0013] In some embodiments, the support member includes an outer connector connected to the pipe jacking machine and an inner connector connected to the connecting shaft. The inner connector is provided with a second connecting hole, and the second connecting hole is provided with an internal thread. The support member has a rod-shaped structure.

[0014] In some embodiments, the connecting shaft has a rod-shaped structure and two external threads, which divide the connecting shaft into three segments.

[0015] In some embodiments, a third link is provided on the outer side of the second link, and a spring is provided on the third link. The outer side of the third link is connected to the inner wall of the guide rail.

[0016] In some embodiments, the diameter of link three is smaller than the diameter of link two, and link three is a telescopic rod.

[0017] In some embodiments, the internal thread and the external thread engage with each other.

[0018] In some embodiments, the connecting shaft is disposed within the lower frame and fixedly connected to the inner wall of the lower frame.

[0019] The present invention has at least the following beneficial effects:

[0020] 1. By setting three fixing components around the outer surface of the pipe jacking machine, the fixing components are connected to the H-shaped outer frame by chains. The H-shaped outer frame is equipped with rollers that rotate around a connecting rod fixed to the inner wall of the H-shaped outer frame. This makes the fixing components not only have the same guiding function as the guide rail, but also reduce the friction between the fixing components and the pipe jacking machine body. At the same time, the H-shaped outer frame, together with the rollers, works with the chains to fix the body of the pipe jacking machine.

[0021] 2. By setting a threaded buffer in the bottom frame of the fixed component in the middle, the force that causes the pipe jacking machine to jump up and down can be offset by the meshing connection between the support with built-in threads in the threaded buffer and the connecting shaft with external threads.

[0022] 3. By setting connecting rod two, connecting rod three, and springs on the left and right sides of the lower frame, the force that causes the pipe jacking machine to swing left and right can be offset by the extension and contraction of connecting rod three and the extension and contraction deformation of the springs. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0025] Figure 3 This is a schematic diagram of the overall structure of the present invention from another angle;

[0026] Figure 4 for Figure 3 Enlarged view at point B in the middle;

[0027] Figure 5 This is a schematic diagram of the fixing component and guide rail structure of the present invention;

[0028] Figure 6 for Figure 5 Enlarged view at point C;

[0029] Figure 7 This is a schematic diagram of the fixing component and guide rail structure from another angle of the present invention;

[0030] Figure 8 for Figure 7 Enlarged view at point D;

[0031] Figure 9 This is a schematic diagram of a threaded buffer structure.

[0032] Figure 10 for Figure 9 Enlarged view at point E in the middle;

[0033] Figure 11 for Figure 9 Enlarged view at point F;

[0034] Figure 12 This is a top view and a GG cross-sectional view of the overall structure of the present invention;

[0035] Figure 13 for Figure 12 Enlarged view of section H in the middle.

[0036] In the diagram: 100 - Pipe jacking machine; 200 - Fixing component; 201 - H-shaped outer frame; 202 - Chain; 203 - Ear piece; 204 - Connecting hole one; 205 - Connecting rod one; 206 - Roller; 207 - Lower frame; 208 - Connecting rod two; 2081 - Connecting rod three; 2082 - Spring; 209 - Connecting shaft; 2091 - External thread; 210 - Through groove; 211 - Support component; 2111 - External connector; 2112 - Internal connector; 2113 - Connecting hole two; 2114 - Internal thread; 300 - Guide rail. Detailed Implementation

[0037] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0038] Example 1, please refer to Figures 1-6 , Figures 9-11 The present invention provides a technical solution: a small anti-jump device for a pipe jacking machine used in field tests of cutting reinforced concrete piles, including a pipe jacking machine 100, a guide rail 300, and three fixing components 200. The pipe jacking machine 100 is mounted on the guide rail 300. The fixing components 200 are arranged circumferentially along the outer surface of the pipe jacking machine 100. The fixing components 200 include connectors and chains 202. The chains 202 are used to fix the connectors circumferentially to the pipe jacking machine 100. An anti-jump component is fixedly connected below the connector at the bottom of the fixing component 200 located in the middle position. The anti-jump component is provided with a threaded buffer. The threaded buffer includes a support 211 with an internal thread 2114 and a connecting shaft 209 with an external thread 2091.

[0039] Specifically, see Figure 1-6 , Figures 9-11 The pipe jacking machine 100 is mounted on the guide rail 300 to facilitate its forward jacking operation. The fixing components 200 are arranged circumferentially along the outer surface of the pipe jacking machine 100. The three fixing components 200 are arranged circumferentially along the outer surface of the pipe jacking machine 100, that is, circumferentially along the cross-section of the pipe jacking machine 100 body. The purpose is to fix the body of the pipe jacking machine 100 through the three fixing components 200 to ensure the normal jacking of the pipe jacking machine 100. The fixing components 200 can fix the pipe jacking machine 100 when it is jacking and cutting the lattice column to prevent the pipe jacking machine 100 from jumping up and down and causing safety accidents.

[0040] Specifically, the fixing component 200 includes a connector and a chain 202. The connector is set around the circumference of the pipe jacking machine 100 by the chain 202. The connector is connected from left to right by the chain 202. The chain is set around the circumference of the pipe jacking machine 100 to form a hoop to hold the pipe jacking machine 100 body and ensure the stability of the pipe jacking machine 100 body during the jacking process, thereby achieving the effect of fixing the pipe jacking machine 100 body.

[0041] Specifically, the fixing components 200 are divided into three sections, located at the front, middle, and rear of the pipe jacking machine 100. The fixing component 200 located in the middle of the pipe jacking machine 100 has an anti-slip component at its bottom. This anti-slip component works in conjunction with the fixing components 200 to ensure the stability of the pipe jacking machine 100 during the jacking process, preventing slippage and safety accidents. By incorporating a threaded buffer within the anti-slip component, the vertical slippage of the pipe jacking machine 100 during the jacking process is offset, thus ensuring the stability of the pipe jacking machine 100 during its jacking operation. By setting the threaded buffer as a support 211 with an internal thread 2114 and a connecting shaft 209 with an external thread 2091, the vertical jumping effect of the pipe jacking machine 100 body can be transmitted to the connecting shaft 209 with an external thread 2091 through the support 211 with an internal thread 2114. The tendency of the support 211 with an internal thread 2114 to rotate due to the vertical jumping effect of the pipe jacking machine 100 body is offset by the subtle meshing motion between the internal thread 2114 and the external thread 2091, i.e., the mutual movement between the thread gaps.

[0042] Example 2, please refer to Figure 1-2 The connector includes a H-shaped outer frame 201, a connecting rod 205 disposed within the H-shaped outer frame 201, lugs 203 disposed on the left and right sides of the H-shaped outer frame 201, a connecting hole 204 disposed on the lugs 203 for connecting the chain 202, and a roller 206 disposed on the connecting rod 205.

[0043] Specifically, the H-shaped outer frame 201 divides the outer frame of the connector into two parts, each of which is equipped with...

[0044] The first connecting rod 205 is fixedly connected to the inner wall of the H-shaped outer frame 201 at both ends. A roller 206 is provided on the first connecting rod. The purpose is to use the first connecting rod 205, which is fixedly set on the inner wall of the H-shaped outer frame 201, as a fixed axis. The roller 206 passes through the first connecting rod, so that the roller 206 can rotate around the first connecting rod 205. Furthermore, the roller 206 is set to contact the outer surface of the pipe jacking machine 100. Therefore, when the body surface of the pipe jacking machine 100 contacts the roller 206, relative movement can occur. That is, when the pipe jacking machine 100 is jacking forward, the body can move forward along the roller 206. The roller 206 not only has the same guiding function as the guide rail 300, but also has the function of reducing the friction between the fixing component 200 and the body of the pipe jacking machine 100. At the same time, the H-shaped outer frame 201 set together with the roller 206 works together with the chain 202 to fix the body of the pipe jacking machine 100.

[0045] Specifically, four lugs 203 are provided on the left and right sides of the H-shaped outer frame 201. Each lug 203 has a connecting hole 204. The size of the connecting hole 204 allows the joint of the chain 202 to be connected and fixed. The purpose of this arrangement is to connect the chain 202 to the connecting hole 204 on the four lugs 203 on the side of the H-shaped outer frame 201. This forms a ring-shaped hoop structure between the chain 202 and the connecting parts, i.e., the H-shaped outer frame 201, which is used to constrain and fix the pipe jacking machine 100 during its forward jacking operation, ensuring the stability and safety of the pipe jacking machine 100 during its jacking operation.

[0046] Example 3, see Figure 3-8 The anti-jumping component includes a lower frame 207 fixedly connected to a connector located at the bottom of the intermediate fixed component 200, connecting rods 208 disposed on the left and right sides of the lower frame 207, and through slots 210 disposed on the front and rear sides of the lower frame 207.

[0047] Specifically, the lower frame 207 of the anti-slip component is located at the bottom of the intermediate fixed component 200, which is circumferentially arranged around the outer surface of the pipe jacking machine 100, i.e., at the bottom of the fixed component 200 arranged circumferentially along the cross-section of the pipe jacking machine 100. Its purpose is to cooperate with the threaded buffer to counteract the force that causes the pipe jacking machine 100 to jump up and down when encountering reinforced concrete piles, columns, and lattice column structures during its forward jacking operation. Connecting rods 208 are provided on the left and right sides of the lower frame 207. The purpose of connecting the connecting rods 208 to the guide rail 300 is to connect the lower frame 207 to the guide rail 300, so that the force causing the pipe jacking machine 100 to swing left and right is transmitted to the guide rail 300, thereby ensuring the stability of the pipe jacking machine 100 during forward jacking. Through slots 210 are provided in front of and behind the lower frame 207 to cooperate with the threaded buffer, allowing the support member 211 in the threaded buffer to pass through the through slots 210 and connect to the outer surface of the pipe jacking machine 100.

[0048] Example 4, see Figures 5-13 A threaded buffer is provided within the lower frame 207. The threaded buffer includes a support member 211 that can pass through the through groove 210 and a connecting shaft 209 connecting the two support members 211. The support member 211 includes an outer connector 2111 that connects to the pipe jacking machine 100 and an inner connector 2112 that connects to the connecting shaft 209. The inner connector 2112 has a second connecting hole 2113, within which is an internal thread 2114. The support member 211 has a rod-like structure. The connecting shaft 209 is located within the lower frame 207 and is fixedly connected to the inner wall of the lower frame 207.

[0049] Specifically, the threaded buffer is provided with two support members 211 and a connecting shaft 209 connecting the two support members 211. The purpose is to transfer the force that causes the pipe jacking machine 100 to jump up and down when it encounters a concrete pile, column, or lattice column in front of it during the forward jacking process to the threaded buffer. The threaded buffer is composed of two support members 211 supporting the body of the pipe jacking machine 100 and a connecting shaft 209 connecting the two support members 211. It transfers the force that causes the pipe jacking machine 100 to jump up and down to the support members 211 supporting the body of the pipe jacking machine 100 and the connecting shaft 209 connecting the support members 211. In this way, the original large force that causes the pipe jacking machine 100 to jump up and down is transformed into three smaller forces distributed on the support members 211 and the connecting shaft 209, thus ensuring the safety of the pipe jacking machine 100 during the forward jacking process.

[0050] Specifically, the outer side of the support member 211 is provided with an external connector 2111 that connects to the pipe jacking machine 100. The outer surface of the pipe jacking machine 100 can be hinged to the external connector 2111 of the support member 211, or it can be fixedly connected to the external connector 2111 of the support member 211. At the same time, it can also be made so that the outer surface of the pipe jacking machine 100 can move relative to the external connector 2111 of the support member 211. The inner side of the support member 211 is provided with an inner connector 2112 that connects to the connecting shaft 209. The inner connector 2112 is provided with a second connecting hole 2113, and the second connecting hole 2113 is provided with an internal thread 2114. The purpose of this arrangement is to connect the inner connector 2112 of the support member 211 with the connecting hole 2113, which is provided with an internal thread 2114, and the connecting shaft 209, which is provided with an external thread 2091, so that the vertical jumping effect of the pipe jacking machine 100 during the forward jacking operation is transmitted through the outer connector 2111 of the support member 211 to the inner connector 2112 of the support member 211 through its own rod-like structure, and then transmitted to the connecting shaft 209 through the internal thread 2114 of the second connecting hole 2113 of the inner connector 2112 of the support member 211.

[0051] The connecting shaft 209 has a rod-shaped structure and two external threads 2091, which divide the connecting shaft 209 into three sections. The internal thread 2114 meshes with the external threads 2091.

[0052] Specifically, by setting the connecting shaft 209 as a rod-shaped structure to facilitate its connection with the support member 211 via threaded engagement through the connecting hole 2113 of the support member 211, two external threads 2091 are provided on the connecting shaft 209, dividing the connecting shaft 209 into three equal segments. The purpose is to connect the support member 211 by engaging the external threads 2091 on the connecting shaft 209 with the internal threads 2114 on the support member 211. The division of the connecting shaft 209 into three equal segments by the two external threads 2091 ensures that the external force applied to the connecting shaft 209 is uniform and will not cause damage to the connecting shaft 209 itself.

[0053] Specifically, the working process of a threaded buffer is as follows: (See attached document) Figures 1-4 , Figures 6-13 ,

[0054] When the pipe jacking machine 100 encounters concrete piles, columns, or lattice columns in its forward jacking process, the concrete piles, columns, or lattice columns will react the cutting force of the pipe jacking machine 100's cutterhead back to the cutterhead, and then transmit the reaction force to the pipe jacking machine 100 itself, causing the pipe jacking machine 100 to tend to jump up and down. The force causing the pipe jacking machine 100 to jump up and down is transmitted to the support member 211 through the outer connector 2111 connected to the lower surface of the pipe jacking machine 100, and then to the inner connector 2112 of the support member 211 through the rod-like structure of the support member 211. Then, the force causing the pipe jacking machine 100 to jump up and down is transmitted to the connecting shaft 209, which is provided with an external thread 2091, through the built-in thread 2114 in the second connecting hole 2113 provided on the inner connector 2112. Because the internal thread 2114 of the support member 211 is tightly engaged with the external thread 2091 of the connecting shaft 209, the force that causes the pipe jacking machine 100 to jump up and down is applied to the support member 211. This causes the support member 211 to rotate clockwise or counterclockwise around the connecting shaft 209 through the second connection hole 2113 of the inner connector 2112. Since the support member 211 and the connecting shaft 209 are connected by threads, the second connection hole 2113 of the inner connector 2112 is used to create this rotation. The tendency of the support member 211 to move clockwise or counterclockwise around the connecting shaft 209 is transformed into a micro-movement along the thread grooves of the internal thread 2114 and the external thread 2091, which mesh with each other. Therefore, the force that causes the support member 211 to move clockwise or counterclockwise around the connecting shaft 209 through the connecting hole 2113 of the inner connector 2112 is canceled out by the micro-movement of the internal thread 2114 and the external thread 2091, thereby ensuring the stability and safety of the pipe jacking machine 100 during the forward jacking process and preventing it from jumping.

[0055] Example 5, see Figure 7-8 A third link 2081 is provided on the outer side of the second link 208, and a spring 2082 is provided on the third link 2081. The outer side of the third link 2081 is connected to the inner wall of the guide rail 300. The diameter of the third link 2081 is smaller than the diameter of the second link 208, and the third link 2081 is a telescopic link.

[0056] Specifically, by providing a connecting rod 2081 on the outside of connecting rod 208 and connecting rod 2081 to the inner wall of guide rail 300, the purpose is to prevent the pipe jacking machine 100 from encountering concrete piles, columns, or lattice columns in front of it during its forward jacking process. The concrete piles, columns, or lattice columns will react the cutting force of the pipe jacking machine 100 cutter head to the pipe jacking machine 100 cutter head, and then transmit the reaction force to the pipe jacking machine 100 itself, causing the pipe jacking machine 100 to swing left and right. This force is transmitted to the anti-jump component through the chain 202 and connector of the fixing component 200. The anti-jump component transmits the force to connecting rod 208 through connecting rod 208. Connecting rod 2081 then cancels out the force that causes the pipe jacking machine 100 to swing left and right through its own extension and contraction and the extension and contraction of the spring 2082 provided on connecting rod 2081. The connection between connecting rod 3 2081 and the inner wall of guide rail 300 can be a hinged connection or a fixed connection. Alternatively, the contact portion between connecting rod 3 2081 and the inner wall of guide rail 300 can be configured as a pulley contact, with a groove on the inner wall of guide rail 300 for the pulley to roll. The first two connection methods allow relative movement between the pipe jacking machine 100 and the fixed component 200 during forward jacking, meaning the pipe jacking machine 100 can move forward detached from the clamps of the fixed component 200. The third method allows the fixed component 200 to move together with the pipe jacking machine 100 during forward jacking.

[0057] The following is combined Figures 1-13 This document describes the usage of the anti-jump device for a small pipe jacking machine during a field test of cutting reinforced concrete piles.

[0058] When the pipe jacking machine 100 encounters concrete piles, columns, or lattice columns in front of it during its forward jacking process, the concrete piles, columns, or lattice columns will react the cutting force of the pipe jacking machine 100 cutter head to the pipe jacking machine 100 cutter head, and then transmit the reaction force to the pipe jacking machine 100 itself, causing the pipe jacking machine 100 to tend to jump up and down and jump left and right.

[0059] The force that causes the pipe jacking machine 100 to jump up and down is transmitted to the support member 211 through the outer connector 2111 connected to the lower surface of the pipe jacking machine 100, and then to the inner connector 2112 of the support member 211 through the rod-like structure of the support member 211. Then, the force that causes the pipe jacking machine 100 to jump up and down is transmitted to the connecting shaft 209 with the external thread 2091 through the built-in thread 2114 in the second connecting hole 2113 provided on the inner connector 2112. Because the internal thread 2114 of the support member 211 is tightly engaged with the external thread 2091 of the connecting shaft 209, the force that causes the pipe jacking machine 100 to jump up and down is applied to the support member 211. This causes the support member 211 to rotate clockwise or counterclockwise around the connecting shaft 209 through the second connection hole 2113 of the inner connector 2112. Since the support member 211 and the connecting shaft 209 are connected by threads, the second connection hole 2113 of the inner connector 2112 is used to create this rotation. The tendency of the support member 211 to move clockwise or counterclockwise around the connecting shaft 209 is transformed into a micro-movement along the thread grooves of the internal thread 2114 and the external thread 2091, which mesh with each other. Therefore, the force that causes the support member 211 to move clockwise or counterclockwise around the connecting shaft 209 through the connecting hole 2113 of the inner connector 2112 is canceled out by the micro-movement of the internal thread 2114 and the external thread 2091, thereby ensuring the stability and safety of the pipe jacking machine 100 during the forward jacking process and preventing jumping.

[0060] The force that causes the pipe jacking machine 100 to swing left and right is transmitted to the anti-slip component through the chain 202 and connector of the fixing component 200. The anti-slip component transmits the force to the connecting rod 208 through the connecting rod 208. The connecting rod 2081 counteracts the force that causes the pipe jacking machine 100 to swing left and right by its own extension and contraction and the extension and contraction of the spring 2082 set in the connecting rod 2081.

[0061] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0062] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention.

Claims

1. A small-scale anti-jump device for on-site testing of cutting reinforced concrete piles, comprising a pipe jacking machine (100) and a guide rail (300), characterized in that: It also includes three fixing components (200); The pipe jacking machine (100) is mounted on the guide rail (300), and the fixing component (200) is arranged circumferentially along the outer surface of the pipe jacking machine (100); The fixing component (200) includes a connector and a chain (202), through which the connector is positioned in the circumferential direction of the pipe jacking machine (100); An anti-slip component is fixedly connected below the connector at the bottom of the fixing component (200) located in the middle position. The anti-slip component is provided with a threaded buffer, which includes a support (211) with an internal thread (2114) and a connecting shaft (209) with an external thread (2091).

2. The anti-jumping device for a small pipe jacking machine used in field tests of cutting reinforced concrete piles according to claim 1, characterized in that: The connector includes a slanted outer frame (201), a connecting rod (205) disposed within the slanted outer frame (201), lugs (203) disposed on the left and right sides of the slanted outer frame (201), a connecting hole (204) disposed on the lugs (203) for connecting the chain (202), and a roller (206) disposed on the connecting rod (205).

3. The anti-jumping device for a small pipe jacking machine used in field tests of cutting reinforced concrete piles according to claim 1, characterized in that: The anti-jumping component includes a lower frame (207) fixedly connected to the connector located at the bottom of the intermediate fixing component (200), two connecting rods (208) disposed on the left and right sides of the lower frame (207), and through slots (210) disposed on the front and rear sides of the lower frame (207).

4. The anti-jumping device for a small pipe jacking machine used in field tests of cutting reinforced concrete piles according to claim 3, characterized in that: The lower frame (207) is provided with the threaded buffer, which includes a support (211) that can pass through the through slot (210) and a connecting shaft (209) that connects the two support (211).

5. The anti-jumping device for a small pipe jacking machine used in field tests of cutting reinforced concrete piles according to claim 4, characterized in that: The support member (211) includes an outer connector (2111) connected to the pipe jacking machine (100) and an inner connector (2112) connected to the connecting shaft (209). The inner connector (2112) is provided with a second connecting hole (2113), and the second connecting hole (2113) is provided with an internal thread (2114). The support member (211) has a rod-shaped structure.

6. The anti-jumping device for a small pipe jacking machine used in field tests of cutting reinforced concrete piles according to claim 4, characterized in that: The connecting shaft (209) has a rod-shaped structure and two external threads (2091) are provided on the connecting shaft (209). The two external threads (2091) divide the connecting shaft (209) into three segments.

7. The anti-jumping device for a small pipe jacking machine used in field tests of cutting reinforced concrete piles according to claim 3, characterized in that: A third link (2081) is provided on the outside of the second link (208), and a spring (2082) is provided on the third link (2081). The outside of the third link (2081) is connected to the inner wall of the guide rail (300).

8. The anti-jumping device for a small pipe jacking machine used in field tests of cutting reinforced concrete piles according to claim 7, characterized in that: The diameter of the third link (2081) is smaller than the diameter of the second link (208), and the third link (2081) is a telescopic link.

9. The anti-jumping device for a small pipe jacking machine used in field tests of cutting reinforced concrete piles according to claim 1, characterized in that: The internal thread (2114) and the external thread (2091) mesh with each other.

10. The anti-jumping device for a small pipe jacking machine used in field tests of cutting reinforced concrete piles according to claim 4, characterized in that: The connecting shaft (209) is disposed inside the lower frame (207) and is fixedly connected to the inner wall of the lower frame (207).

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