A tunnel segment damage repairing device

Abstract

This invention discloses a tunnel segment damage repair device, comprising a base plate, clamping devices on both sides of the base plate, and a supporting excavation device on the upper side of the base plate. The supporting excavation device includes a support ring with stepped holes and anchor rods inside the stepped holes. A circular shaft is rotatably connected to the base plate, and the circular shaft is driven to rotate and move axially by a driving device. A disc is fixedly connected to the upper end of the circular shaft, and the disc has a slag discharge channel. A first blade is fixedly connected to the side wall of the slag discharge channel. A sliding groove is provided at the bottom of the disc, and a sliding plate is slidably connected within the sliding groove. A second blade is fixedly connected to the outer end of the sliding plate. A sliding block is slidably connected to the support ring, and a support rod is hinged between the sliding block and the sliding plate. This invention allows the support wheel to continue rolling onto a second arc block. Because the second arc block has the largest diameter, the outer contour of the second blade is the largest, exceeding the diameter of the segment rupture. This is suitable for excavation operations in confined spaces, facilitating the subsequent formation of stepped pouring blocks, and providing greater support strength than direct filling repair methods.

Description

Technical Field

[0001] This invention relates to the field of tunnel segment repair technology, and more particularly to a tunnel segment damage repair device. Background Technology

[0002] It is difficult to avoid damage to tunnel segments from external environmental operations. For example, some surface construction work may cause damage to underground tunnel segments. Damage to tunnel segments caused by drilling rig rods or impact hammers is usually penetrating. Currently, the treatment is mainly carried out inside the tunnel. The treatment sequence is as follows: chiseling away the concrete fragments that have not fallen off or cracked at the damaged area; cleaning the broken surface with pressurized cleaning water to remove soil and dust; fabricating a steel mesh; drilling holes in the tunnel segments to install steel bars and tying the steel mesh; and smoothing and bonding with cement mortar.

[0003] The size of the reinforcing mesh is generally matched to the damaged hole, requiring the drilling of many holes in the tunnel lining to provide sufficient support. Drilling in narrow holes increases the difficulty, resulting in low construction efficiency. The repair block is subjected to high pressure from the outer soil layer of the tunnel, resulting in poor integrity with the tunnel lining and a risk of falling later. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a tunnel segment damage repair device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A tunnel segment damage repair device includes a base plate, clamping devices on both sides of the base plate, and a support and excavation device on the upper side of the base plate. The support and excavation device includes a support ring with a stepped hole and an anchor rod inside the stepped hole. A round shaft is rotatably connected to the base plate and is driven to rotate and move axially by a driving device. A disc is fixedly connected to the upper end of the round shaft. The disc has a slag discharge channel. A first blade is fixedly connected to the side wall of the slag discharge channel. A sliding groove is provided at the bottom of the disc. A sliding plate is slidably connected in the sliding groove. A second blade is fixedly connected to the outer end of the sliding plate. The support ring is slidably connected to a sliding seat. A support rod is hinged between the sliding seat and the sliding plate.

[0007] Preferably, the inner end of the slide is hinged to a limiting rod, and the hinge shaft of the limiting rod is provided with a torsion spring. The torsion spring causes the limiting rod to press on the slide plate, and when the slide plate moves away from the limiting rod, the limiting rod can enter the slide.

[0008] Preferably, the clamping device includes a vertical plate, a guide rod slidably connected to the vertical plate, a clamping plate fixedly connected to one end of the guide rod, and an electric push rod fixedly connected to the bottom of the base plate, with the electric push rod being fixedly connected to the guide rod.

[0009] Preferably, the substrate and the clamping plate are each provided with a slot.

[0010] Preferably, the driving device includes a support plate, the base plate is provided with a mounting groove, the support plate is fixedly connected in the mounting groove, the bottom of the support plate is fixedly connected to a drive motor, the main shaft of the drive motor is axially slidably connected to a bushing, the upper end of the bushing is fixedly connected to a square rod, the bottom of the round shaft is provided with a square hole, the square rod is inserted into the square hole, the outer diameter of the round shaft is threaded with a locking rod, and the locking rod abuts against the outside of the square rod.

[0011] The bushing is driven by a lifting device to slide along the main shaft axis of the drive motor.

[0012] Preferably, the lifting device is a hydraulic cylinder or a self-limiting device;

[0013] The hydraulic cylinder is fixedly connected to the support plate, and the telescopic rod of the hydraulic cylinder is fixedly connected to the bushing.

[0014] The self-limiting device includes a first bevel gear, which is coaxially and fixedly connected to the main shaft of the drive motor. A vertical plate is fixedly connected to the upper side of the support plate, and a second bevel gear is rotatably connected to one side of the vertical plate. The second bevel gear meshes with the first bevel gear, and the diameter of the second bevel gear is larger than that of the first bevel gear. The rotating shaft of the second bevel gear is fixedly connected to a reference circular plate, and the outer circle of the reference circular plate is fixedly connected to a first arc block and a second arc block. The diameter of the second arc block is larger than that of the first arc block.

[0015] The pallet is slidably connected to the guide rod, and a boss is provided at the lower end of the guide rod. A support spring is fixedly connected between the boss and the pallet. The upper ends of the two guide rods are fixedly connected to a ring. The bottom of the ring is rotatably connected to a support wheel. The support wheel rolls on the outer circle of the reference circular plate. A round rod is rotatably connected to one side of the bushing, and the round rod contacts the upper side of the ring.

[0016] Preferably, circular rods are rotatably connected to both sides of the pallet, the circular rods are fixedly connected to the slag discharge cover, and the bottom of the slag discharge cover is fixedly connected to the slag discharge hose.

[0017] The advantages of this invention are as follows: The tunnel segment damage repair device provided by this invention first drills a hole in the inner wall of the segment hole, inserts an anchor rod into the drill hole, and anchors a support ring in the segment hole as a support reference and the skeleton for subsequent concrete filling. After the support ring is fixed, the first blade on the upper side of the disc excavates the top surface of the tunnel by rotating the circular shaft, and the second blade on the side of the disc excavates the side of the top surface of the tunnel. Due to the size of the segment hole, the diameter of the directly enlarged cavity is affected. In order to expand the excavation surface outside the tunnel segment, the circular shaft moves axially. Due to the limiting effect of the support ring and the hinge effect of the support rod, the slide plate slides outward, and the distance between the second blades at the outer ends of the two slide plates increases. This allows for the excavation of an enlarged cavity larger than the segment hole, which facilitates the pouring of stepped concrete. Under the pressure of the soil on the outer wall of the tunnel, the filled concrete is not subjected to thrust alone, thus strengthening the stability of the reinforcement.

[0018] This invention allows the support wheel to continue rolling onto the second arc block. Since the second arc block has the largest diameter, the outer contour of the second blade is the largest, exceeding the diameter of the hole in the tunnel segment. This makes it suitable for excavation operations in confined spaces, facilitating the subsequent formation of stepped pouring blocks. The support strength is greater than that of direct filling repair methods. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the basic structure of the present invention and a schematic diagram of the drive device and the support excavation device in a separated state;

[0020] Figure 2 This is a schematic diagram of the structure supporting the excavation device in this invention;

[0021] Figure 3 This is a schematic diagram of the drive device in this invention;

[0022] Figure 4 This is a schematic diagram of the stand-alone structure of the present invention after the tray is detached from the substrate;

[0023] Figure 5 This is a schematic diagram of the usage state of the present invention. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0025] like Figure 1-5 As shown, the present invention provides a tunnel segment damage repair device, including a base plate 1, clamping devices 2 on both sides of the base plate 1, and a support and excavation device 3 on the upper side of the base plate 1. The support and excavation device 3 includes a support ring 31, a stepped hole 32 in the support ring 31, and an anchor rod 33 in the stepped hole 32. A round shaft 34 is rotatably connected to the base plate 1. The round shaft 34 is driven to rotate and move axially by a driving device 4. A disc 35 is fixedly connected to the upper end of the round shaft 34. The disc 35 has a slag discharge channel 351. A first blade 352 is fixedly connected to the side wall of the slag discharge channel 351. The thickness of the first blade 352 is less than the width of the slag discharge channel 351 to facilitate slag discharge. A sliding groove 353 is provided at the bottom of the disc 35. A sliding plate 354 is slidably connected in the sliding groove 353. A second blade 355 is fixedly connected to the outer end of the sliding plate 354. The support ring 31 is slidably connected to a sliding seat 36. A support rod 37 is hinged between the sliding seat 36 and the sliding plate 354.

[0026] In one embodiment of the present invention, the inner end of the slide groove 353 is hinged to a limiting rod 38, and the hinge shaft of the limiting rod 38 is provided with a torsion spring. The torsion spring causes the limiting rod 38 to press on the slide plate 354, and when the slide plate 354 moves away from the limiting rod 38, the limiting rod 38 can enter the slide groove 353.

[0027] This invention involves drilling holes in the inner wall of the tunnel segment hole 10, inserting anchor rods 33 into the holes, and anchoring a support ring 31 within the tunnel segment hole 10. This support ring 31 serves as a support reference and the framework for subsequent concrete filling. After the support ring 31 is fixed, the first blade 352 on the upper side of the disc 35 excavates the top surface of the tunnel via the rotation of the circular shaft 34, while the second blade 355 on the side of the disc 35 excavates the side surface of the tunnel top. Due to the size of the tunnel segment hole 10, the diameter of the directly enlarged cavity 20 is affected. To expand the excavation surface outside the tunnel segment, the circular shaft 34 is moved axially. Due to the limiting effect of the support ring 31 and the hinge effect of the support rod 37, the sliding plate 354 slides outward, increasing the distance between the second blades 355 at the outer ends of the two sliding plates 354. This allows for the excavation of an enlarged cavity 20 larger than the tunnel segment hole 10, facilitating the pouring of stepped concrete. Under the pressure of the soil on the outer wall of the tunnel, the filled concrete is not subjected to thrust alone, thus enhancing the stability of the reinforcement.

[0028] Furthermore, after the distance at which the sliding plate 354 slides outward is greater than the length of the limiting rod 38, the limiting rod 38, under the action of the torsion spring, enters the sliding groove 353, thus blocking the backward movement of the sliding plate 354. When the disc 35 falls due to gravity, the support rod 37 pulls the sliding plate 354 towards the center of the disc 35, but it is supported by the limiting rod 38, preventing the sliding plate 354 from retracting. The sliding plate 354 enters the enlarged cavity 20 and is larger than the segment hole 10, thereby forming a skeleton, which facilitates the filling of concrete and improves the support strength.

[0029] In one embodiment of the present invention, the clamping device 2 includes a vertical plate 21, the vertical plate 21 is slidably connected to a guide rod 22, one end of the guide rod 22 is fixedly connected to a clamping plate 23 by screws for easy disassembly, and an electric push rod is fixedly connected to the bottom of the base plate 1, the electric push rod being fixedly connected to the guide rod 22.

[0030] Furthermore, the substrate 1 and the clamping plate 23 are respectively provided with slots 11.

[0031] The corresponding electric push rod pushes the guide rod 22 to slide, and the two clamps 23 support the tunnel segment hole 10, fixing the invention on the tunnel segment for easy excavation. After excavation, the baffle can be easily inserted into the slot 11 to form a support template. Release agent is sprayed on the clamps 23, baffle and base plate 1, and after the concrete solidifies, it is easy to remove the formwork.

[0032] In one embodiment of the present invention, the driving device 4 includes a support plate 41, the base plate 1 is provided with a mounting groove 42, the support plate 41 is fixedly connected in the mounting groove 42, the bottom of the support plate 41 is fixedly connected to a drive motor 43, the main shaft of the drive motor 43 is axially slidably connected to a bushing 44, that is, the main shaft of the drive motor 43 rotates synchronously with the bushing 44 and the bushing 44 can move axially relative to the drive motor 43, which is achieved by existing technical structures such as a shaft key or a spline shaft. The upper end of the bushing 44 is fixedly connected to a square rod 45, the bottom of the round shaft 34 is provided with a square hole, the square rod 45 is inserted into the square hole, and the outer diameter of the round shaft 34 is threadedly connected to a locking rod 46, which presses against the outside of the square rod 45.

[0033] The support plate 41 is disassembled by screws and separated from the base plate 1. After the locking rod 46 of the round shaft 34 is disassembled, the support plate 41, drive motor 43, bushing 44, etc. are removed. The first blade 352 and the second blade 355 are removed. The first blade 352 and the second blade 355 are made of hard alloy, which is costly and therefore needs to be recycled. A sealing plate is fixed in the mounting groove 42. The outer contour of the disc 35 and the sliding plate 354 is larger than the segment hole 10 and is left in the excavated cavity 20 as a skeleton. The support ring 31 is left in the segment hole 10 as a skeleton. The support rod 37 is between the segment hole 10 and the excavated cavity 20, so that the concrete after pouring is strong enough to bond with the segment hole 10 and resist the external pressure of the tunnel.

[0034] The bushing 44 is driven by a lifting device to slide along the main shaft axis of the drive motor 43.

[0035] The lifting device is a hydraulic cylinder or a self-limiting device 6;

[0036] As one embodiment of the present invention, the lifting device is a hydraulic cylinder, which is fixedly connected to the support plate 41, and the telescopic rod of the hydraulic cylinder is fixedly connected to the bushing 44. The hydraulic cylinder requires a hydraulic station and oil circuit, which is inconvenient for use in this narrow space.

[0037] In another preferred embodiment of the lifting device, the self-limiting device 6 includes a first bevel gear 61, which is coaxially fixedly connected to the main shaft of the drive motor 43. A vertical plate 62 is fixedly connected to the upper side of the support plate 41, and a second bevel gear 63 is rotatably connected to one side of the vertical plate 62. The second bevel gear 63 meshes with the first bevel gear 61, and the diameter of the second bevel gear 63 is larger than that of the first bevel gear 61. The second bevel gear 63 rotates only once for the first bevel gear 61 to rotate at least a number of times. The rotating shaft of the second bevel gear 63 is fixedly connected to a reference circular plate 64. The outer circle of the reference circular plate 64 is fixedly connected to a first arc block 65 and a second arc block 66, and the diameter of the second arc block 66 is larger than that of the first arc block 65.

[0038] The support plate 41 is slidably connected to the guide rod 67. The lower end of the guide rod 67 is provided with a boss 68. The boss 68 and the support plate 41 are fixedly connected to the support spring 69. The upper ends of the two guide rods 67 are fixedly connected to the ring 7. The bottom of the ring 7 is rotatably connected to the support wheel 71. The support wheel 71 rolls on the outer circle of the reference circular plate 64. The bushing 44 is rotatably connected to a round rod 72 on one side. The round rod 72 contacts the upper side of the ring 7.

[0039] The present invention preferably uses a self-limiting device 6. When using the self-limiting device 6, the drive motor 43 drives the circular shaft 34 to rotate. After the circular shaft 34 rotates one revolution with the circular disk 35, the first blade 352 and the second blade 355, the drive motor 43 fixes the first bevel gear 61. After the first bevel gear 61 rotates one revolution, the second bevel gear 63 rotates to make the first arc block 65 act on the support wheel 71, raising the bushing 44 to a height. The raising of the bushing 44 raises the circular shaft 34. As the circular shaft 34 rises, due to the limiting effect of the support ring 31 and the hinge effect of the support rod 37, the sliding plate 354 slides outward. The distance between the second blades 355 at the outer ends of the two sliding plates 354 increases, thereby enabling the excavation of a cavity 20 larger than the segment hole 10. The concrete to be poured is stepped. Under the pressure of the soil on the outer wall of the tunnel, the filled concrete will not be subjected to thrust alone, thus strengthening the stability of the reinforcement.

[0040] When the support wheel 71 is supported on the first arc block 65, the excavated diameter is larger than the diameter excavated by the support wheel 71 on the reference circular plate 64. The support wheel 71 returns from the first arc block 65 to the reference circular plate 64. Under the action of the self-weight of the disc 35 and its auxiliary structure and the reset action of the support spring 69, the circular shaft 34 and the bushing 44 descend. (When encountering rock strata that are difficult to excavate, the drive motor 43 is controlled to rotate forward and backward, and the second blade 355 reciprocates to form an impact excavation.) This causes the extended distance of the second blade 355 to retract. The excavated soil is pushed by the retracted second blade 355, which facilitates pushing the soil into the segment hole 10 and making it easier to discharge the soil.

[0041] Subsequently, the support wheel 71 continues to roll onto the second arc block 66. Since the second arc block 66 has the largest diameter, the outer contour of the second blade 355 is the largest, exceeding the diameter of the segment hole 10, which facilitates the subsequent formation of a stepped pouring block, and the support strength is greater than that of the direct filling repair method.

[0042] In one embodiment of the present invention, circular rods 8 are rotatably connected to both sides of the pallet 41, the circular rods 8 are fixedly connected to the slag discharge cover 81, and the bottom of the slag discharge cover 81 is fixedly connected to the slag discharge hose 82. Figure 1 and Figure 5 As shown, the present invention is supported at the center of the top of the tunnel or on the side of the top. The slag discharge cover 81 can remain vertical under the influence of gravity, which facilitates the collection of falling slag and makes it convenient for centralized cleaning of slag.

[0043] Working principle: The drilling rig first drills a hole in the inner wall of the segment hole 10, and the anchor rod 33 is inserted into the drill hole to anchor the support ring 31 in the segment hole 10. The drive motor 43 drives the round shaft 34 to rotate, and the first blade 352 on the upper side of the disc 35 and the second blade 355 on the side dig soil.

[0044] After the drive motor 43 drives the first bevel gear 61 to rotate one revolution, the second bevel gear 63 rotates to make the first arc block 65 act on the support wheel 71, raising the bushing 44 to a height. The raising of the bushing 44 causes the round shaft 34 to rise. As the round shaft 34 rises, due to the limiting effect of the support ring 31 and the hinge effect of the support rod 37, the slide plate 354 slides outward. The distance between the second blades 355 at the outer ends of the two slide plates 354 increases, thereby enabling the excavation of a cavity 20 larger than the segment hole 10.

[0045] Subsequently, the support wheel 71 continues to roll onto the second arc block 66. Since the second arc block 66 has the largest diameter, the outer contour of the second blade 355 is the largest, exceeding the diameter of the segment hole 10, which facilitates the subsequent formation of a stepped pouring block, and the support strength is greater than that of the direct filling repair method.

[0046] 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, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A tunnel segment damage repair device, comprising a base plate (1), clamping devices (2) respectively provided on both sides of the base plate (1), and a supporting excavation device (3) provided on the upper side of the base plate (1), characterized in that: The supporting excavation device (3) includes a support ring (31), the support ring (31) is provided with a stepped hole (32), an anchor rod (33) is provided in the stepped hole (32), a round shaft (34) is rotatably connected on the base plate (1), the round shaft (34) is driven to rotate and move axially by a driving device (4), a disc (35) is fixedly connected to the upper end of the round shaft (34), the disc (35) is provided with a slag discharge channel (351), a first blade (352) is fixedly connected to the side wall of the slag discharge channel (351), a sliding groove (353) is provided at the bottom of the disc (35), a sliding plate (354) is slidably connected in the sliding groove (353), a second blade (355) is fixedly connected to the outer end of the sliding plate (354), the support ring (31) is slidably connected to a sliding seat (36), and a support rod (37) is hinged between the sliding seat (36) and the sliding plate (354); The driving device (4) includes a support plate (41), the base plate (1) is provided with a mounting groove (42), the support plate (41) is fixedly connected in the mounting groove (42), the bottom of the support plate (41) is fixedly connected to a drive motor (43), the main shaft of the drive motor (43) is axially slidably connected to a bushing (44), the upper end of the bushing (44) is fixedly connected to a square rod (45), the bottom of the round shaft (34) is provided with a square hole, the square rod (45) is inserted into the square hole, the outer diameter of the round shaft (34) is threaded with a locking rod (46), and the locking rod (46) presses against the outside of the square rod (45); The bushing (44) is driven by the lifting device to slide along the main shaft axis of the drive motor (43); The lifting device is a hydraulic cylinder or a self-limiting device (6); The hydraulic cylinder is fixedly connected to the support plate (41), and the telescopic rod of the hydraulic cylinder is fixedly connected to the bushing (44); The self-limiting device (6) includes a first bevel gear (61), which is coaxially fixedly connected to the main shaft of the drive motor (43). A vertical plate (62) is fixedly connected to the upper side of the support plate (41), and a second bevel gear (63) is rotatably connected to one side of the vertical plate (62). The second bevel gear (63) meshes with the first bevel gear (61), and the diameter of the second bevel gear (63) is larger than that of the first bevel gear (61). The rotating shaft of the second bevel gear (63) is fixedly connected to a reference circular plate (64). The outer circle of the reference circular plate (64) is fixedly connected to a first arc block (65) and a second arc block (66), and the diameter of the second arc block (66) is larger than that of the first arc block (65). The pallet (41) is slidably connected to the guide rod (67). A boss (68) is provided at the lower end of the guide rod (67). A support spring (69) is fixedly connected between the boss (68) and the pallet (41). The upper ends of the two guide rods (67) are fixedly connected to a ring (7). The bottom of the ring (7) is rotatably connected to a support wheel (71). The support wheel (71) rolls on the outer circle of the reference circular plate (64). A round rod (72) is rotatably connected to one side of the bushing (44). The round rod (72) contacts the upper side of the ring (7). The pallet (41) is rotatably connected to two circular rods (8) on both sides. The circular rods (8) are fixedly connected to the slag discharge cover (81), and the bottom of the slag discharge cover (81) is fixedly connected to the slag discharge hose (82).

2. The tunnel segment repair device according to claim 1, characterized in that: The inner end of the slide groove (353) is hinged to a limiting rod (38). The hinge shaft of the limiting rod (38) is provided with a torsion spring. The torsion spring causes the limiting rod (38) to press on the slide plate (354). When the slide plate (354) moves away from the limiting rod (38), the limiting rod (38) can enter the slide groove (353).

3. The tunnel segment repair device according to claim 1, characterized in that: The clamping device (2) includes a vertical plate (21), which is slidably connected to a guide rod (22). One end of the guide rod (22) is fixedly connected to a clamping plate (23). The bottom of the base plate (1) is fixedly connected to an electric push rod, which is fixedly connected to the guide rod (22).

4. The tunnel segment repair device according to claim 3, characterized in that: The substrate (1) and the clamping plate (23) are respectively provided with slots (11).

Images