A device for preventing the retreat of a pipe segment of a mechanical method connecting channel

Abstract

The utility model discloses a kind of for mechanical method liaison passage pipe piece prevent device, it is related to prevent the technical field, including fixed beam and connecting beam, one end of connecting beam is connected on fixed beam by detachable mechanism, the other end is equipped with the abutting mechanism for abutting pipe piece, abutting mechanism includes the positioning plate fixedly connected on connecting beam, abutting plate is slidably connected on the positioning plate to the side of pipe piece, multiple adjusting bolts for driving abutting plate to move are equipped between abutting plate and positioning plate;This one for mechanical method liaison passage pipe piece prevent device, connecting head is against the inclined plane of two cylindrical lock pins, then drive connecting head to compress the inclined plane of two cylindrical lock pins to make two cylindrical lock pins separate, until two cylindrical lock pins are aligned pinhole, reset and insert into pinhole under the elastic force of corresponding first spring recovered elastic deformation, connecting head will be clamped in limiting groove, so as to adjust abutting mechanism.

Description

Technical Field

[0001] This utility model relates to the field of anti-retrograde technology, specifically to a device for preventing the retrograde of segments in mechanically connected tunnels. Background Technology

[0002] The design of some of the reverse-pull propulsion cylinders in the tunnel jacking machine used for the mechanical connection passage between shield tunnel sections has certain limitations. These cylinders are fully extended before segment assembly and retract simultaneously during tunnel jacking, making independent operation of each cylinder impossible. Therefore, when the tunnel jacking machine completes its tunneling work and enters the segment assembly stage, all reverse-pull cylinders must be fully extended to provide sufficient working space for segment installation.

[0003] However, in this assembly mode, because all the counter-pull cylinders are in the extended position, the cutterhead of the pipe jacking machine is pushed backward under the pressure of the soil chamber, causing the entire machine to tend to shift backward. This backward trend may cause the newly assembled segments to shift back, resulting in gaps between the segments and making them prone to seepage later. Utility Model Content

[0004] The purpose of this invention is to provide a device for preventing the retraction of segments in mechanically connected tunnels, thereby addressing the shortcomings of the prior art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a device for preventing the retraction of tunnel segments in a mechanical connection channel, comprising a fixed beam and a connecting beam. One end of the connecting beam is connected to the fixed beam via a detachable mechanism, and the other end is provided with a clamping mechanism for abutting the tunnel segments. The clamping mechanism includes a positioning plate fixedly connected to the connecting beam. An abutting plate that abuts the side of the tunnel segment is slidably connected to the positioning plate. A plurality of adjusting bolts for driving the abutting plate to move are provided between the abutting plate and the positioning plate.

[0006] Preferably, the contact surface of the contact plate is provided with anti-slip texture.

[0007] Preferably, multiple adjusting bolts are arranged in a rectangular pattern on the positioning plate.

[0008] Preferably, the detachable mechanism includes: a connecting seat, which is fixedly connected to the connecting beam; a connecting head, which is fixedly connected to the connecting beam, and the connecting head has a pin hole; and a locking member, which includes two symmetrically arranged and elastically slidably connected cylindrical locking pins on the connecting seat, the two cylindrical locking pins having a beveled end that abuts against each other, and the two cylindrical locking pins being able to be inserted into the pin hole to allow the connecting beam to rotate relative to the connecting seat.

[0009] Preferably, the connector has an arc-shaped limiting groove that limits the position of the connector head.

[0010] Preferably, a limit cap is fixedly connected to each of the cylindrical locking pins, and a first spring is sleeved on the cylindrical locking pin. One end of the first spring is fixedly connected to the limit cap, and the other end is fixedly connected to the connecting seat.

[0011] Preferably, at least one limiting member is provided between the connector and the connector seat to limit the position of the connector. The limiting member includes an arc-shaped groove on the connector seat, and a slide rod is slidably connected in the arc-shaped groove. One end of the slide rod is fixedly connected to a threaded head, and the other end is fixedly connected to an abutment cap that can abut against the connector seat. The connector head is provided with a threaded hole that threadedly engages with the threaded head.

[0012] Preferably, the diameter of the threaded head is larger than the diameter of the slide bar.

[0013] Preferably, the connecting beam is connected to an external steel starting sleeve by an iron chain.

[0014] In the above technical solution, the present invention provides a device for preventing the retraction of tunnel segments in a mechanical connection channel. During installation, the connector is aligned with the inclined surfaces of two cylindrical locking pins. The connector is then driven to press against the inclined surfaces of the two cylindrical locking pins to separate them until the two cylindrical locking pins are aligned with the pin holes. Under the elastic force of the corresponding first spring restoring its elastic deformation, the connector is reset and inserted into the pin holes. At the same time, the connector is engaged in the limiting groove. At this point, the connector will only rotate along the two aligned cylindrical locking pins to adjust the clamping mechanism, thereby facilitating subsequent workers to clamp the corresponding tunnel segments through the clamping mechanism.

[0015] After installing the connector, first screw the threaded part of the limiting part into the corresponding threaded hole, and then adjust the clamping mechanism to the appropriate position by swinging the connecting beam. At this time, the threaded head rotates with the connecting beam under the cooperation of the slide rod and the arc groove. Then continue to rotate the threaded head until the abutment cap abuts against the connecting seat to complete the locking of the connector. The whole process can better adjust the position of the clamping mechanism.

[0016] After all the installation work is completed, the adjusting bolts are turned one by one to make the abutment plate abut against the side of the segment, which can effectively prevent the segment from shifting. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0018] Figure 1A schematic diagram of the overall structure provided for an embodiment of this utility model; Figure 2 A schematic diagram of the clamping mechanism provided in this embodiment of the utility model; Figure 3 This is a schematic diagram of the structure of the connector provided in an embodiment of the present utility model; Figure 4 This is a schematic diagram of the connector provided in an embodiment of the present utility model.

[0019] Explanation of reference numerals in the attached figures: 1. Fixed beam; 2. Connecting beam; 3. Positioning plate; 4. Abutment plate; 5. Adjusting bolt; 6. Connecting seat; 7. Connecting head; 8. Pin hole; 9. Columnar locking pin; 10. Inclined surface; 11. Limiting groove; 12. Limiting cap; 13. First spring; 14. Arc-shaped slide groove; 15. Slide rod; 16. Threaded head; 17. Abutment cap; 18. Threaded hole; 19. Iron chain. Detailed Implementation

[0020] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0021] Please see Figure 1-4 This utility model provides a device for preventing the retraction of tunnel segments in a mechanically constructed connecting channel. It includes a fixed beam 1 and a connecting beam 2. One end of the connecting beam 2 is detachably connected to the fixed beam 1, and the other end is equipped with a clamping mechanism for abutting the tunnel segments. The clamping mechanism includes a positioning plate 3 fixedly connected to the connecting beam 2. An abutting plate 4, which abuts the side of the tunnel segment, is slidably connected to the positioning plate 3. Multiple adjusting bolts 5 are provided between the abutting plate 4 and the positioning plate 3 to drive the abutting plate 4 to move. It should be noted that a mounting plate is fixedly connected to the fixed beam 1. Multiple mounting bolts on the mounting plate allow the fixed beam 1 to be fixedly installed on a steel launching sleeve within the mechanically constructed connecting channel, enabling the subsequent clamping mechanism to clamp the tunnel segments and prevent them from retracting.

[0022] The contact surface of the abutment plate 4 is provided with anti-slip texture. This increases the friction between the abutment plate 4 and the tunnel segment, further effectively preventing the tunnel segment from shifting.

[0023] Multiple adjusting bolts 5 are arranged in a rectangular pattern on the positioning plate 3, making it convenient for workers to rotate each adjusting bolt 5 individually.

[0024] The detachable mechanism includes: a connecting seat 6, which is fixedly connected to the connecting beam 2; a connecting head 7, which is fixedly connected to the connecting beam 2, and the connecting head 7 has a pin hole 8; and a locking member, which includes two symmetrically arranged and elastically slidably connected cylindrical locking pins 9 on the connecting seat 6, the two cylindrical locking pins 9 having abutting ends with a bevel 10, and the two cylindrical locking pins 9 being able to be inserted into the pin hole 8 so that the connecting beam 2 can rotate relative to the connecting seat 6.

[0025] The connector 6 has an arc-shaped limiting groove 11 that limits the connector 7.

[0026] Each cylindrical locking pin 9 is fixedly connected to a limit cap 12, and a first spring 13 is sleeved on the cylindrical locking pin 9. One end of the first spring 13 is fixedly connected to the limit cap 12, and the other end is fixedly connected to the connecting seat 6. Based on this, it should be noted that the elastic force of the two first springs 13 when they recover their elastic deformation can drive the corresponding cylindrical pin to reset and abut against each other.

[0027] The connector 7 is provided with at least one limiting component between the connector 7 and the connector 6 to limit the movement of the connector 7. The limiting component includes an arc-shaped groove 14 on the connector 6, in which a slide rod 15 is slidably connected. One end of the slide rod 15 is fixedly connected to a threaded head 16, and the other end is fixedly connected to an abutment cap 17 that can abut against the connector 6. The connector 7 has a threaded hole 18 that is threadedly engaged with the threaded head 16. It should be noted that the abutment cap 17 has a hexagonal hole so that the abutment cap 17 can be rotated by an electric hexagonal wrench.

[0028] The diameter of the threaded head 16 is larger than the diameter of the slide bar 15.

[0029] Among them, the steel launching sleeve of the external main tunnel is connected to the connecting beam 2 by iron chain 19. The iron chain 19 is connected to the connecting beam 2 by hook. During the advancement process, the entire device needs to be lifted, and during the segment assembly, the entire device needs to be lowered.

[0030] Specifically, during installation, the connector 7 is aligned with the inclined surfaces 10 of the two cylindrical locking pins 9. The connector 7 is then driven to press against the inclined surfaces 10 of the two cylindrical locking pins 9 to separate them until the two cylindrical locking pins 9 are aligned with the pin holes 8. Then, under the elastic force of the first spring 13 restoring its elastic deformation, the connector 7 is reset and inserted into the pin holes 8. At the same time, the connector 7 will be engaged in the limiting groove 11. At this point, the connector 7 will only rotate along the two aligned cylindrical locking pins 9 to adjust the clamping mechanism, thereby facilitating subsequent workers to clamp the corresponding pipe segments through the clamping mechanism.

[0031] After the connector 7 is installed, first screw the threaded head 16 in the limiting part into the corresponding threaded hole 18. Then, swing the connecting beam 2 until the clamping mechanism is adjusted to a suitable position. At this time, the threaded head 16 rotates with the connecting beam 2 under the cooperation of the slide rod 15 and the arc groove. Then continue to rotate the threaded head 16 until the abutment cap 17 abuts against the connecting seat 6 to complete the locking of the connector 7. The whole process can better adjust the position of the clamping mechanism.

[0032] After all the installation work is completed, the adjusting bolts 5 are rotated one by one to make the abutment plate 4 abut against the side of the segment, which can effectively prevent the segment from shifting.

[0033] Based on the above, the entire device can be reused, thereby improving its practicality.

[0034] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A device for preventing the retraction of tunnel segments using mechanical methods, comprising a fixed beam, characterized in that, It also includes a connecting beam, one end of which is connected to a fixed beam via a detachable mechanism, and the other end is provided with a clamping mechanism for abutting the pipe segment. The clamping mechanism includes a positioning plate fixedly connected to the connecting beam, and an abutting plate that abuts the side of the pipe segment is slidably connected to the positioning plate. Multiple adjusting bolts are provided between the abutting plate and the positioning plate for driving the abutting plate to move.

2. The device for preventing the retraction of tunnel segments using mechanical connection as described in claim 1, characterized in that, The contact surface of the contact plate is provided with anti-slip texture.

3. A device for preventing the retraction of tunnel segments using mechanical connection as described in claim 1, characterized in that, Multiple adjusting bolts are arranged in a rectangular pattern on the positioning plate.

4. A device for preventing the retraction of tunnel segments using mechanical connection as described in claim 1, characterized in that, The detachable mechanism includes: The connecting seat is fixedly connected to the connecting beam; The connector is fixedly connected to the connecting beam, and a pin hole is provided on the connector. The locking element includes two symmetrically arranged and elastically slidably connected cylindrical locking pins on the connecting seat. The two cylindrical locking pins have a beveled end that abuts against each other. The two cylindrical locking pins can be inserted into pin holes to allow the connecting beam to rotate relative to the connecting seat.

5. A device for preventing the retraction of tunnel segments using mechanical connection as described in claim 4, characterized in that, The connector has an arc-shaped limiting groove that limits the position of the connector head.

6. A device for preventing the retraction of tunnel segments using mechanical connection as described in claim 4, characterized in that, Each of the cylindrical locking pins is fixedly connected to a limit cap, and a first spring is sleeved on the cylindrical locking pin. One end of the first spring is fixedly connected to the limit cap, and the other end is fixedly connected to the connecting seat.

7. A device for preventing the retraction of tunnel segments using mechanical connection as described in claim 4, characterized in that, At least one limiting member is provided between the connector and the connector seat to limit the position of the connector. The limiting member includes an arc-shaped groove on the connector seat. A slide rod is slidably connected in the arc-shaped groove. One end of the slide rod is fixedly connected to a threaded head, and the other end is fixedly connected to an abutment cap that can abut against the connector seat. The connector head is provided with a threaded hole that is threadedly engaged with the threaded head.

8. A device for preventing the retraction of tunnel segments using mechanical connection as described in claim 7, characterized in that, The diameter of the threaded head is larger than the diameter of the slide bar.

9. A device for preventing the retraction of tunnel segments using mechanical connection as described in claim 4, characterized in that, The connecting beam is connected to an external steel launching sleeve via an iron chain.

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