Deviation correcting device

Abstract

The utility model provides a deviation rectifying device, and belongs to the technical field of shield tunneling machines. Comprising a deflection assembly. The deflection assembly comprises a sliding structure, a driving structure and a connecting structure; the connecting structure is fixedly connected with the fixed end of the thrust cylinder, one end of the sliding structure is fixedly connected with the connecting structure, and the other end of the sliding structure is connected with a shield body in the heading machine; one end of the driving structure is connected with a shield body in the heading machine, the other end of the driving structure is connected with the sliding structure, and the driving structure drives the sliding structure to move and drives the gripper shoe structure to move relative to the shield body. According to the utility model, the deflection component is arranged at the tail part of the existing gripper shoe structure of the heading machine, so that when the shield body rolls, the circumferential position of the sliding structure relative to the shield body is adjusted through the driving of the driving structure, and a deflection angle is formed between the thrust oil cylinder and the original position; the thrust oil cylinder extends out of the piston rod to enable the supporting shoe to abut against the duct piece to generate tangential component force in the circumferential direction of the shield body, so that the shield body rolls, and then deviation correction is conducted on the shield body.

Description

Technical Field

[0001] This utility model belongs to the field of tunnel boring machine technology and relates to a deviation correction device. Background Technology

[0002] Shield tunneling is currently the most widely used method for underground tunnel construction, and the shield tunneling machine is a crucial piece of equipment in shield tunneling. At present, during shield tunneling operations, factors such as uneven geological formations, tunneling on curved sections, and inherent limitations of the shield equipment itself can easily cause an imbalance in the shield's counter-torque, resulting in changes in the shield's roll angle. When the roll angle becomes too large, it leads to shield imbalance and further increases the roll angle, while also affecting the quality of segment assembly and the final formed segment structure.

[0003] During normal tunneling, the cutterhead rotates unidirectionally to cut the tunnel face. The torque generated by the cutterhead rotation can cause the shield to roll, affecting the overall tunneling efficiency. Common measures to restore the shield after roll include adjusting by reversing the cutterhead rotation. However, this has several drawbacks: first, after reversing, the cutterhead is prone to rolling back when it resumes forward tunneling; second, the presence of bearings between the cutterhead and the shield makes the correction effect insignificant; and third, reversing the cutterhead is ineffective when the shield is stuck. Another measure for shield roll is adjusting the thrust cylinder angle. Traditionally, this involves manually adjusting the angles of the thrust cylinders at the 3 o'clock and 9 o'clock positions, applying some thrust tangentially to the tunnel boring machine's rotation to correct the roll, but this method is also ineffective. Therefore, how to adjust and correct a rolling shield is a problem that needs to be solved by those skilled in the art. Utility Model Content

[0004] This invention proposes a correction device to solve the problem of the tunneling machine shield body rolling due to the cutterhead always rotating in one direction to cut and excavate the rock strata.

[0005] This utility model provides a deviation correction device for adjusting the posture of the support shoe structure in a tunneling machine. The support shoe structure includes a propulsion cylinder and a support shoe installed on the drive end of the propulsion cylinder; it also includes a sway component.

[0006] The yaw assembly includes a sliding structure, a driving structure, and a connecting structure; the connecting structure is fixedly connected to the fixed end of the propulsion cylinder, one end of the sliding structure is fixedly connected to the connecting structure, and the other end of the sliding structure is connected to the shield body in the tunneling machine; one end of the driving structure is connected to the shield body in the tunneling machine, and the other end of the driving structure is connected to the sliding structure. The driving structure drives the sliding structure to move and causes the support shoe structure to move relative to the shield body.

[0007] Optionally, the connection structure is configured as a support pipe; the support pipe is sleeved on the fixed end of the propulsion cylinder and fixedly connected to the fixed end of the propulsion cylinder.

[0008] Optionally, the sliding structure includes a top slide rail, a bottom slide rail, a limiting block, and a sliding base plate;

[0009] The top slide rail and the bottom slide rail are symmetrically arranged along the central axis of the propulsion cylinder, and the top slide rail is fixedly connected to both the support pipe and the shield body. The bottom slide rail is fixedly connected to the support pipe through a limiting block.

[0010] The sliding base plate is slidably installed between the top slide rail and the bottom slide rail, and there are gaps between the sliding base plate and the top slide rail, and between the sliding base plate and the bottom slide rail.

[0011] Optionally, the top slide rail includes a slide rail section and a first connecting section connected to each other; the slide rail section is configured as a U-shaped structure, the side end of the slide rail section away from the first connecting section is fixedly connected to the shield body, and the opening of the slide rail section is set towards the central axis of the propulsion cylinder; the end of the first connecting section away from the slide rail section is fixedly connected to the connecting structure.

[0012] The bottom slide rail is configured as a U-shaped structure, and the opening of the bottom slide rail is set towards the central axis of the propulsion cylinder;

[0013] The slide rail section and the bottom slide rail work together to form the track structure.

[0014] Optionally, the sliding base plate includes a slider segment and a second connecting segment connected to each other; the slider segment is installed between the top slide rail and the bottom slide rail; the second connecting segment extends into the support tube and is located near the end face of the propulsion cylinder.

[0015] Optionally, a first buffer pad is provided between the second connecting section and the end face of the propulsion cylinder, and between the propulsion cylinder and the support pipe.

[0016] Optionally, the driving structure is configured as a sway cylinder, with the fixed end of the sway cylinder fixedly connected to the shield body and the driving end of the sway cylinder fixedly connected to the sliding base plate, for driving the sliding base plate to move.

[0017] Optionally, the correction device provided by this utility model also includes a support component;

[0018] The support assembly is sleeved on the fixed end of the propulsion cylinder and positioned near the support shoe at the fixed end of the propulsion cylinder, and is fixedly connected to the shield body to support the propulsion cylinder.

[0019] Optionally, the support assembly includes a base plate, a second buffer pad, and a pressure plate; the base plate is welded to the shield body; the second buffer pad wraps around the fixed end of the propulsion cylinder and is fixedly connected to the base plate; the pressure plate is bolted to the base plate and fixes the second buffer pad along the axial direction of the propulsion cylinder.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] In this invention, a swaying component is installed at the tail of the existing support shoe structure of the tunneling machine (i.e., the fixed end of the propulsion cylinder in the support shoe structure). The propulsion cylinder is connected to the sliding structure through the connecting structure in the swaying component, and the sliding structure is driven to move by the drive structure. When the shield rolls, the circumferential position of the sliding structure relative to the shield is adjusted by the drive structure, so that the propulsion cylinder forms an angle with the original position. The piston rod of the propulsion cylinder extends and the support shoe abuts against the tunnel segment, generating a tangential component force along the circumferential direction of the shield. This component force is opposite to the direction of the cutterhead rotation. Since the propulsion system is composed of multiple sets of propulsion cylinders, multiple tangential components are formed, causing the shield to roll, thereby correcting the shield's deviation.

[0022] In addition to the objectives, features, and advantages described above, this utility model has other objectives, features, and advantages. The present utility model will now be described in further detail with reference to the figures. Attached Figure Description

[0023] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0024] Figure 1 This is a schematic diagram of the interconnection between a deviation correction device and the shield body and support shoe structure in a tunneling machine according to an embodiment of this utility model;

[0025] Figure 2 yes Figure 1 Schematic diagram of the AA section;

[0026] Figure 3 This is a schematic diagram of the state of applying a correction device in an embodiment of the present invention to correct the relative position between the shield body and the support boot structure.

[0027] Figure 4 This is a schematic diagram of the application of a correction device in an embodiment of the present invention to correct the deviation of all support shoe structures in a tunneling machine.

[0028] in:

[0029] 1. Shield body; 101. Ring plate; 102. Front support ring; 103. Segment; 2. Support shoe structure; 201. Propulsion cylinder; 202. Support shoe; 3. Oscillating assembly; 301. Top slide rail; 302. Bottom slide rail; 303. Limiting block; 304. Oscillating cylinder; 305. Sliding base plate; 306. First buffer pad; 307. Support tube; 4. Support assembly; 401. Connecting base plate; 402. Second buffer pad; 403. Pressure plate. Detailed Implementation

[0030] To make the above-mentioned objectives, features, and advantages of this utility model clearer and easier to understand, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be noted that the accompanying drawings of this utility model are all in a simplified form and use non-precise proportions, and are only used to facilitate and clearly assist in illustrating the implementation of this utility model; the "several" mentioned in this utility model are not limited to the specific number shown in the examples in the drawings; the directions or positional relationships indicated by "front," "middle," "rear," "left," "right," "up," "down," "top," "bottom," and "middle" mentioned in this utility model are all based on the directions or positional relationships shown in the accompanying drawings of this utility model, and do not indicate or imply that the device or component referred to must have a specific orientation, nor should they be construed as limitations on this utility model.

[0031] Example:

[0032] See Figures 1 to 3 As shown, the present invention provides a deviation correction device for adjusting the attitude of a support shoe structure 2 in a tunneling machine. The support shoe structure 2 includes a propulsion cylinder 201 and a support shoe 202 mounted on the drive end of the propulsion cylinder 201. The deviation correction device includes a sway assembly 3.

[0033] The skew assembly 3 includes a sliding structure, a driving structure, and a connecting structure. The connecting structure is fixedly connected to the fixed end of the propulsion cylinder 201. One end of the sliding structure is fixedly connected to the connecting structure, and the other end of the sliding structure is connected to the shield body 1 in the tunneling machine. One end of the driving structure is connected to the shield body 1 in the tunneling machine, and the other end of the driving structure is connected to the sliding structure. The driving structure drives the sliding structure to move and causes the support shoe structure 2 to move relative to the shield body 1. Thus, when the shield body 1 rolls, the driving structure adjusts the circumferential position of the sliding structure relative to the shield body 1, so that the propulsion cylinder 201 forms an angle with its original position. The propulsion cylinder 201 extends its piston rod, causing the support shoe 202 to abut against the segment 103, generating a tangential component force along the circumferential direction of the shield body 1. This component force is opposite to the direction of the cutterhead rotation. Since the propulsion system is composed of multiple sets of propulsion cylinders 201, multiple tangential components are formed, causing the shield body 1 to roll, thereby correcting the skew of the shield body 1.

[0034] Furthermore, the connection structure is configured as a support pipe 307; the support pipe 307 is sleeved on the fixed end of the propulsion cylinder 201 and is fixedly connected to the fixed end of the propulsion cylinder 201.

[0035] Furthermore, the sliding structure includes a top slide rail 301, a bottom slide rail 302, a limiting block 303, and a sliding base plate 305;

[0036] The top slide rail 301 and the bottom slide rail 302 are symmetrically arranged along the central axis of the propulsion cylinder 201, and the top slide rail 301 is fixedly connected to the support pipe 307 and the shield body 1 at the same time, and the bottom slide rail 302 is fixedly connected to the support pipe 307 through the limiting block 303.

[0037] The sliding base plate 305 is slidably installed between the top slide rail 301 and the bottom slide rail 302, and gaps are provided between the sliding base plate 305 and the top slide rail 301, and between the sliding base plate 305 and the bottom slide rail 302.

[0038] Furthermore, the top slide rail 301 includes a slide rail section and a first connecting section connected to each other; the slide rail section is configured as a U-shaped structure, the side end of the slide rail section away from the first connecting section is fixedly connected to the shield body 1, and the opening of the slide rail section is set towards the central axis of the propulsion cylinder 201; the end of the first connecting section away from the slide rail section is fixedly connected to the connecting structure.

[0039] The bottom slide rail 302 is configured as a U-shaped structure, and the opening of the bottom slide rail 302 is set towards the central axis of the propulsion cylinder 201; the slide rail section and the bottom slide rail 302 cooperate with each other to form a track structure.

[0040] Preferably, the slide rail segment and the first connecting segment are interconnected to form an L-shaped structure. More preferably, the slide rail segment and the first connecting segment are integrally formed.

[0041] Furthermore, the sliding base plate 305 includes a slider segment and a second connecting segment connected to each other; the slider segment is installed between the top slide rail 301 and the bottom slide rail 302; the second connecting segment extends into the support tube 307 and is located near the end face of the propulsion cylinder 201.

[0042] Preferably, the slider segment and the second connecting segment are interconnected to form a convex-shaped structure. More preferably, the slider segment and the second connecting segment are integrally formed.

[0043] Furthermore, a first buffer pad 306 is provided between the second connecting section and the end face of the propulsion cylinder 201, and between the propulsion cylinder 201 and the support pipe 307, to prevent rigid contact between the end face of the propulsion cylinder 201 and the support pipe 307.

[0044] Preferably, the first buffer pad 306 is configured as a rubber structure.

[0045] Furthermore, the driving structure is configured as a sway cylinder 304, the fixed end of the sway cylinder 304 is fixedly connected to the shield body 1, and the driving end of the sway cylinder 304 is fixedly connected to the sliding base plate 305, for driving the sliding base plate 305 to move.

[0046] Furthermore, each of the sway cylinders 304, limiting blocks 303, and bottom slide rails 302 is provided with at least one set, each corresponding to the other. Specifically, in this embodiment, based on the number of propulsion cylinders 201, two sets of sway cylinders 304, limiting blocks 303, and bottom slide rails 302 are provided, each corresponding to the other. The two sway cylinders 304 and two limiting blocks 303 in each set are symmetrically arranged. One sway cylinder 304 extends its piston rod to abut against the limiting block 303, while the other sway cylinder 304 does not extend its piston rod at all, but its piston rod also abuts against the limiting block 303. The movement of the sliding base plate 305 is restricted by the extended piston rod states of the two sway cylinders 304. The sway cylinder 304 with its extended piston rod has the same rotation direction as the cutter head.

[0047] Furthermore, the propulsion cylinder 201 can be a cylinder module consisting of two cylinders, or a propulsion cylinder module consisting of one cylinder or three or more cylinders.

[0048] As a further embodiment of this utility model, the correction device also includes a support component 4;

[0049] The support component 4 is sleeved on the fixed end of the propulsion cylinder 201 and is located near the support shoe 202 at the fixed end of the propulsion cylinder 201, and is fixedly connected to the shield body 1 to support the propulsion cylinder 201.

[0050] Furthermore, the support assembly 4 includes a connecting base plate 401, a second buffer pad 402, and a pressure plate 403; the connecting base plate 401 is welded to the shield body 1; the second buffer pad 402 wraps around the fixed end of the propulsion cylinder 201 and is fixedly connected to the connecting base plate 401; the pressure plate 403 is bolted to the connecting base plate 401 and fixes the second buffer pad 402 along the axial direction of the propulsion cylinder 201.

[0051] As a further embodiment of this utility model, in order to clearly illustrate the connection relationship between the above-mentioned correction device and the tunneling machine shield 1, the part of the shield 1 used to connect with the correction device is described as follows: The shield 1 includes a shield body and a ring plate 101 and a front support ring 102 disposed on the shield body. One end of the ring plate 101 and the front support ring 102 are fixedly connected to the shield body, and the other end of the ring plate 101 and the front support ring 102 extend in the vertical direction. The ring plate 101 and the front support ring 102 are spaced apart from each other along the displacement direction of the propulsion cylinder 201.

[0052] As a further embodiment of this utility model, see [link to relevant documentation]. Figure 4 As shown, in order to further optimize the correction of shield body 1, all the support shoe structures in the tunneling machine are divided into four zones: A, B, C, and D. When shield body 1 rolls, the extension amount of the sway cylinder 304 in the correction device corresponding to the four zones A, B, C, and D of the support shoe structure 2 is adjusted according to the roll angle and distance of shield body 1, so as to accurately correct the roll of shield body 1.

[0053] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A deviation rectifying device for adjusting the posture of a prop shoe structure (2) in a heading machine, the prop shoe structure (2) comprising a prop cylinder (201) and a prop shoe (202) mounted on the driving end of the prop cylinder (201); characterized in that, The biasing assembly (3) comprises a sliding structure, a driving structure and a connecting structure; the connecting structure is fixedly connected with a fixed end of a propelling oil cylinder (201); one end of the sliding structure is fixedly connected with the connecting structure, and the other end of the sliding structure is connected with a shield body (1) in the tunneling machine; one end of the driving structure is connected with the shield body (1) in the tunneling machine, and the other end of the driving structure is connected with the sliding structure; the driving structure drives the sliding structure to displace and drives the support shoe structure (2) to displace relative to the shield body (1). The connecting structure is a support pipe (307); the support pipe (307) is sleeved on the fixed end of the propelling oil cylinder (201) and is fixedly connected with the fixed end of the propelling oil cylinder (201).

2. The correction device of claim 1, wherein The sliding structure comprises a top sliding rail (301), a bottom sliding rail (302), a limiting block (303) and a sliding bottom plate (305).

3. The correction device of claim 2, wherein, The top sliding rail (301) and the bottom sliding rail (302) are symmetrically arranged along the central axis of the propelling oil cylinder (201), respectively; the top sliding rail (301) is fixedly connected with the support pipe (307) and the shield body (1); and the bottom sliding rail (302) is fixedly connected with the support pipe (307) through the limiting block (303). The sliding bottom plate (305) is slidingly installed between the top sliding rail (301) and the bottom sliding rail (302); and gaps are arranged between the sliding bottom plate (305) and the top sliding rail (301) and between the sliding bottom plate (305) and the bottom sliding rail (302). The top sliding rail (301) comprises a sliding rail segment and a first connecting segment which are connected with each other; the sliding rail segment is arranged in a U-shaped structure; the side end face of the sliding rail segment away from the first connecting segment is fixedly connected with the shield body (1); and the opening of the sliding rail segment is arranged in the direction of the central axis of the propelling oil cylinder (201); and the end of the first connecting segment away from the sliding rail segment is fixedly connected with the connecting structure.

4. The correction device of claim 3, wherein The bottom sliding rail (302) is arranged in a U-shaped structure; and the opening of the bottom sliding rail (302) is arranged in the direction of the central axis of the propelling oil cylinder (201). The sliding rail segment and the bottom sliding rail (302) cooperatively form a track structure. The sliding bottom plate (305) comprises a sliding block segment and a second connecting segment which are connected with each other; the sliding block segment is installed between the top sliding rail (301) and the bottom sliding rail (302); and the second connecting segment extends into the support pipe (307) and is arranged close to the end face of the propelling oil cylinder (201).

5. The correction device of claim 3, wherein First buffer pads (306) are arranged between the second connecting segment and the end face of the propelling oil cylinder (201) and between the propelling oil cylinder (201) and the support pipe (307).

6. The correction device of claim 5, wherein The driving structure is a biasing oil cylinder (304); the fixed end of the biasing oil cylinder (304) is fixedly connected with the shield body (1); and the driving end of the biasing oil cylinder (304) is fixedly connected with the sliding bottom plate (305) to drive the sliding bottom plate (305) to displace.

7. The correction device of claim 6, wherein The biasing assembly (3) further comprises a supporting assembly (4).

8. The correction device according to any one of claims 1 to 7, characterized in that ​ The support assembly (4) is sleeved on the fixed end of the propelling oil cylinder (201) and arranged at the position close to the supporting shoe (202) of the fixed end of the propelling oil cylinder (201), and is fixedly connected with the shield body (1) to support the propelling oil cylinder (201).

9. The correction device of claim 8, wherein, The support assembly (4) comprises a bottom plate (401), a second buffer pad (402) and a pressing plate (403); the bottom plate (401) is welded on the shield body (1); the second buffer pad (402) is wrapped on the fixed end of the propelling oil cylinder (201) and fixedly connected with the bottom plate (401); and the pressing plate (403) is bolted on the bottom plate (401) and fixes the second buffer pad (402) along the axial direction of the propelling oil cylinder (201).

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