Duct piece bolt fastening device for balance shield tunneling

Abstract

The utility model discloses a pipe piece bolt fastening device for balanced shield tunneling, which comprises a support rod and a swing component, a grabbing rod is fixedly arranged at one end of the support rod, and positioning claws are symmetrically arranged on two sides of the grabbing rod respectively; the swing assembly comprises a first rotating shaft rotationally connected to the supporting rod, the two ends of the first rotating shaft are fixedly connected with a first swing rod and a second swing rod correspondingly, a connecting cylinder is rotationally connected between the first swing rod and the second swing rod, and a groove used for clamping a segment bolt is formed in the end, close to the grabbing rod, in the connecting cylinder. When the positioning claw abuts against the preformed groove of the duct piece, the axis of the first rotating shaft coincides with the circle center of the circle where the connecting hole is located, so that when the duct piece bolt is inserted, the duct piece bolt is driven by the connecting cylinder to rotate with the first rotating shaft as the center, the duct piece bolt can be inserted into the connecting hole more smoothly, the shield duct piece cannot be damaged, and construction is more convenient and safer.

Description

Technical Field

[0001] This utility model relates to the field of shield tunnel segment bolt installation technology, specifically to a segment bolt fastening device for balanced shield tunnel excavation. Background Technology

[0002] During shield tunneling, the installation of tunnel segments is a crucial step in the entire construction process. The segments in a shield tunnel are primarily connected using segment bolts. During the tunneling process, these segment bolts must withstand various forces, including ground pressure, the thrust of the tunneling machine, and grouting pressure. Therefore, the installation of these segment bolts directly impacts the stability and safety of the shield tunneling construction.

[0003] The connection holes on the tunnel segments are typically arc-shaped slots, with a pre-drilled groove extending from the opening of the connection hole to the side wall of the segment. The segment bolts have an arc-shaped structure with the same curvature as the connection holes, allowing them to be inserted into the connection holes for installation. During installation, two adjacent segments are aligned, and then the segment bolts are inserted through the pre-drilled grooves and passed through the connection holes to connect the two segments.

[0004] Currently, the installation of tunnel segment bolts mainly relies on manual operation by construction workers. Due to the susceptibility of errors during shield tunnel segment installation, bolts often fail to install smoothly. In such cases, workers typically resort to hammering to force the bolts into place. However, this method has significant drawbacks: the direction and position of force on the bolts are difficult to control precisely when hammering, easily causing cracks at the connection holes and ultimately damaging the tunnel segments. Damaged segments not only affect the progress of subsequent construction work but also result in substandard bolt installation quality, failing to achieve the expected performance. Furthermore, repeated rework reduces construction efficiency, poses significant safety hazards, and fails to meet the requirements of high efficiency, safety, and high quality in modern shield tunneling construction. Utility Model Content

[0005] This invention addresses the problem of difficult segment bolt installation during shield tunneling by providing a balanced segment bolt fastening device for shield tunnel excavation. This device facilitates installation and construction, improves construction efficiency, and eliminates potential quality and safety hazards.

[0006] A segment bolt fastening device for balanced shield tunneling is characterized by comprising a support rod and a swing assembly. A gripper is fixedly mounted at one end of the support rod, and positioning claws are symmetrically arranged on both sides of the gripper. The swing assembly includes a first rotating shaft rotatably connected to the support rod. A first swing rod and a second swing rod are fixedly connected to both ends of the first rotating shaft, and a connecting cylinder is rotatably connected between the first swing rod and the second swing rod. A groove for clamping the segment bolt is provided inside the connecting cylinder near the gripper. When the positioning claws abut against the pre-reserved groove of the segment, the axis of the first rotating shaft coincides with the center of the circle containing the connecting hole, causing the segment bolt to rotate around the first rotating shaft under the drive of the connecting cylinder when inserted.

[0007] A further technical solution is that the positioning claw has a bending structure that is adapted to the shape of the reserved groove.

[0008] A further technical solution is: a connecting column is fixedly connected between the first swing rod and the second swing rod, and a connecting cylinder is rotatably sleeved on the outer periphery of the connecting column.

[0009] A further technical solution is: a through hole is provided on the side wall of the groove, and a positioning bolt is threaded onto the through hole.

[0010] A further technical solution is: a push rod for driving its rotation is connected to the swing assembly, a connecting plate is fixedly connected between the first swing rod and the second swing rod, an opening is opened on the side of the connecting plate, and the push rod is rotatably connected inside the opening through a second rotating shaft.

[0011] A further technical solution is to provide a push block at the other end of the push rod for easy operation.

[0012] A further technical solution is to install a handle on the end of the support rod away from the grab bar.

[0013] The beneficial effects of this utility model are:

[0014] This utility model device, through the configuration of a support rod, a swing assembly, and a connecting cylinder, works by inserting the hexagonal head of the tunnel segment bolt into the groove inside the connecting cylinder and clamping it in place. The support rod is then held so that the positioning claws on both sides of the gripper abut against the pre-reserved slots of two adjacent tunnel segments. At this point, the axis of the first rotating shaft passes through the center of the circle containing the connecting hole, pushing the push rod to rotate the swing assembly. This, in turn, causes the connecting cylinder to rotate around the first rotating shaft, assisting in smoothly pushing the arc-shaped tunnel segment bolt into the arc-shaped connecting hole, facilitating the installation of the tunnel segment bolt. Compared with the traditional method of directly hammering for installation, this device has advantages such as high efficiency, good stability, and no damage to the tunnel segments. This utility model device is convenient and lightweight, ensuring the integrity of the tunnel segments and the progress of construction. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the device in use.

[0016] Figure 2 This is a partial structural cross-sectional view of the device of this utility model;

[0017] Figure 3 This is a three-dimensional view of the overall structure of this utility model;

[0018] Figure 4 yes Figure 2 Enlarged view of the structure at point A in the middle.

[0019] In the picture:

[0020] 1. Support rod, 2. Grab rod, 21. Positioning claw, 3. Swing assembly, 31. First swing rod, 32. Second swing rod, 4. Connecting column, 5. Connecting plate, 51. Opening, 6. Connecting cylinder, 61. Groove, 7. Positioning bolt, 8. Push rod, 81. Push block, 9. Shield segment, 91. Connecting hole, 92. Reserved groove, 10. Handle, 11. Segment bolt. Detailed Implementation

[0021] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0022] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the utility model.

[0023] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] like Figures 1-4As shown, a segment bolt 11 fastening device for balanced shield tunnel excavation includes a support rod 1 and a swing assembly 3. A gripper 2 is fixedly installed at one end of the support rod 1, and positioning claws 21 are symmetrically arranged on both sides of the gripper 2. The swing assembly 3 includes a first rotating shaft rotatably connected to the support rod 1. A first swing rod 31 and a second swing rod 32 are fixedly connected to both ends of the first rotating shaft, respectively. A connecting cylinder 6 is rotatably connected between the first swing rod 31 and the second swing rod 32. A groove 61 for clamping the segment bolt 11 is opened in the connecting cylinder 6 near the gripper 2.

[0025] When the positioning claws 21 on both sides of the gripper 2 abut against the reserved slots 92 of the two adjacent segments, the axis of the first rotating shaft coincides with the center of the circle where the connecting hole 91 is located. This allows the segment bolt 11 to rotate around the first rotating shaft (i.e., rotate around the center of the circle where the connecting hole is located) under the drive of the connecting cylinder 6 when it is inserted, so that the segment bolt 11 can be smoothly inserted into the connecting hole 91 without damaging the quality of the segment.

[0026] The positioning claw 21 has a bent structure that is compatible with the reserved slot 92, so that the positioning claws 21 on both sides of the gripper 2 can be respectively engaged in the reserved slot 92 on the tube segment to position the insertion position of the tube segment bolt 11 and realize the positioning of the support rod 1.

[0027] A connecting column 4 is fixedly connected between the first swing rod 31 and the second swing rod 32. The end of the connecting cylinder 6 away from the grab rod 2 is rotatably sleeved on the outer periphery of the connecting column 4. The connecting column 4 is set through the connecting cylinder 6. When the connecting cylinder 6 rotates, it can adapt to the shape of the segment bolt 11 inserted into the arc-shaped hole.

[0028] The shape of the groove 61 inside the connecting cylinder 6 is adapted to the segment bolt 11, and its cross-sectional shape is set as hexagonal, so that the hexagonal head at the end of the segment bolt 11 can be smoothly inserted into the groove 61 of the connecting cylinder 6.

[0029] A through hole is provided on the side wall of the groove 61, and a positioning bolt 7 is threaded into the through hole. When the hexagonal head of the segment bolt 11 extends into the groove 61, the positioning bolt 7 is passed through the through hole and tightened to clamp and fix the segment bolt 11, preventing the segment bolt 11 from falling off the connecting cylinder 6 during the installation and pushing process.

[0030] A push rod 8 for driving its rotation is connected to the swing assembly 3. A connecting plate 5 is fixedly connected between the first swing rod 31 and the second swing rod 32. An opening 51 is provided on the side of the connecting plate 5, and the push rod 8 is rotatably connected inside the opening 51 through a second rotating shaft. A push block 81 is provided at the other end of the push rod 8 for convenient operation. Specifically, the push block 81 can be configured as a spherical, T-shaped, or ring-shaped structure.

[0031] A handle 10 is provided at the end of the support rod 1 away from the gripping rod 2. Specifically, in one embodiment, as shown... Figure 3 As shown, the grip 10 includes a fixed frame with side plates at both ends. A grip rod is fixedly connected between the two side plates, and a gap is left between the grip rod and the fixed frame, allowing the operator to insert four fingers into the gap and grasp the grip rod for use. In another embodiment, the grip 10 can also be a T-shaped rod. By providing the grip 10, it is convenient for the operator to hold the support rod 1 with one hand and push the push rod 8 with the other hand to rotate the swing rod.

[0032] Specifically, this device is made of aluminum alloy frame plates, which are lightweight, have a certain strength, and are easy for workers to use.

[0033] How to use this utility model:

[0034] When installing the segment bolts 11, the installation and connection are initially done manually by construction personnel. When encountering segment bolts 11 that are difficult to insert into the connecting holes 91, this utility model device can be used. First, hold the handle 10 and place the positioning claws 21 on both sides of the gripping rod 2 against the pre-reserved slots 92 of a pair of shield tunnel segments 9. Then, clamp the hexagonal head of one end of the segment bolt 11, which is threaded, into the groove 61 of the connecting cylinder 6 using the positioning bolt 7. Next, align the other end of the segment bolt 11 with the pre-reserved slot 92 and insert it into the connecting hole 91. With the other hand, hold the push rod 8 to rotate the swing assembly 3, pushing the segment bolt 11 into the connecting hole 91. Because the first axis of rotation of the swing assembly 3 is the center of the circle containing the connecting hole 91, the segment bolt 11 can be inserted into the connecting hole 91 more smoothly without damaging the shield tunnel segments 9, making construction more convenient and safer.

[0035] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A balanced shield tunneling segment bolt fastening device, characterized by, The support rod is provided with a grab bar at one end, and positioning claws are symmetrically arranged on both sides of the grab bar; the swing assembly comprises a first rotating shaft rotatably connected to the support rod, first and second swing rods fixedly connected to both ends of the first rotating shaft, and a connecting cylinder rotatably connected between the first and second swing rods, wherein a groove for clamping a segment bolt is formed in the connecting cylinder near the end of the grab bar; when the positioning claws are placed on the reserved groove of the segment, the first rotating shaft axis coincides with the center of the circle on which the connecting hole is located, so that the segment bolt is inserted and rotates around the first rotating shaft under the driving of the connecting cylinder.

2. The balanced shield tunneling segment bolt fastening device according to claim 1, characterized in that, The positioning claw has a bending structure matched with the shape of the reserved groove.

3. The balanced shield tunneling segment bolt fastening device according to claim 1, wherein, The first and second swing rods are fixedly connected with a connecting column, and the connecting cylinder is rotatably sleeved on the outer periphery of the connecting column.

4. The balanced shield tunneling segment bolt fastening device according to claim 1, wherein, A through hole is formed in the side wall of the groove, and a positioning bolt is threadedly connected to the through hole.

5. The balanced shield tunneling segment bolt fastening device according to claim 1, wherein, The swing assembly is connected with a push rod for driving the rotation of the swing assembly, the first and second swing rods are fixedly connected with a connecting plate, an opening is formed in the side surface of the connecting plate, and the push rod is rotatably connected to the inside of the opening through a second rotating shaft.

6. The balanced shield tunneling segment bolt fastening device according to claim 5, wherein, The other end of the push rod is provided with a push block for facilitating the control of the push rod.

7. The balanced shield tunneling segment bolt fastening device according to claim 1, wherein, The end of the support rod away from the grab bar is provided with a handle.

Images