Positioning device for eccentric track of TBM (Tunnel Boring Machine) tunnel

Abstract

The utility model discloses a positioning device for an eccentric track of a TBM (tunnel boring machine) tunnel, which comprises a sleeper positioning device comprising a fixing part arranged at the bottom of a tunnel structural beam and extending downwards; the guiding piece is connected with the fixing piece, a limiting piece is arranged at the bottom of the guiding piece, and an upper positioning hole and a lower positioning hole are formed in the middle of the guiding piece in a staggered mode; and the positioning angle plate is connected to the guiding piece in a sleeving mode, a connecting pin is arranged on the sleeving portion of the positioning angle plate, a vertical positioning face used for positioning the eccentric track is arranged on the extension portion of the positioning angle plate, and a positioning pin shaft used for determining the position of the sleeper is arranged on the extension portion. The device is simple in structure and convenient to use, and can realize rapid measurement and positioning of the installation position of the full-length eccentric track in the tunnel, thereby improving the measurement efficiency and reducing the labor cost. When the eccentric track is adopted in the small-hole-diameter tunnel, the single-side space of the track is increased, a continuous belt conveyor can be installed, and TBM construction is greatly facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of TBM tunnel construction, in particular to a positioning device for an eccentric track of a TBM tunnel. Background Art

[0002] Normally, the locomotive track used to transport materials in an open TBM is laid on the ground at the center of the tunnel axis. However, in a small-diameter tunnel, the side pedestrian walkway and the central locomotive transport channel need to be considered. When the electrical equipment is wide, the layout of the rear supporting equipment becomes very difficult. Specifically, if the equipment is wide and occupies the channel of the central transport locomotive, the locomotive track will deviate from the center of the tunnel axis and cannot be arranged on the ground of the tunnel. In order to keep the locomotive transport track in the center of the tunnel, it is necessary to arrange a steel structure platform on the TBM rear supporting equipment to arrange the eccentric track. In this case, after the locomotive runs in the center of the tunnel axis, it needs to enter the TBM rear supporting equipment, climb the climbing track, and then turn to enter the eccentric track on the TBM steel platform. The above scheme not only requires the addition of a rear supporting steel structure platform, which increases the investment cost, but also when the small-diameter tunnel adopts this TBM rear supporting arrangement, it will limit the height and width of the transport locomotive, which will affect the transportation of materials. In addition, this arrangement further reduces the operating space of the TBM rear supporting equipment, which will affect equipment maintenance and personnel passage. It can be seen that the solution of arranging eccentric tracks throughout the length of the tunnel is the best. However, the existing technology can only use manual measurement to determine the track laying position, which is inefficient and has very high labor costs, affecting the construction progress and construction costs. Summary of the invention

[0003] In order to solve the above problems, the utility model provides a positioning device for the eccentric track of a TBM tunnel, which can specifically adopt the following technical solutions:

[0004] The positioning device for the eccentric track of a TBM tunnel described in the utility model comprises a sleeper positioning device, and the sleeper positioning device comprises:

[0005] A fixing member is arranged at the bottom of the tunnel structure beam and extends downward;

[0006] A guide member connected to the fixing member, a limiting member is arranged at the bottom of the guide member, and an upper positioning hole and a lower positioning hole are staggeredly arranged in the middle of the guide member;

[0007] The positioning angle plate is sleeved on the guide member, a connecting pin is arranged on the sleeved portion of the positioning angle plate, an extended portion of the positioning angle plate has a vertical positioning surface for positioning the eccentric track, and a positioning pin shaft for determining the position of the sleeper is arranged on the extended portion.

[0008] The guide member is a columnar body, and the sleeve portion of the positioning angle plate is an annular structure adapted to the guide member. The upper positioning hole and the lower positioning hole are staggered at 90°, and the central axis of the upper positioning hole is arranged along the longitudinal direction of the tunnel. The lower positioning hole is arranged on the outside of the sleeper, and the connecting pin is connected to one of the upper positioning hole and the lower positioning hole.

[0009] The positioning pin shaft is an L-shaped structure, and a pin support plate for inserting the positioning pin shaft is arranged on the extension part, and a positioning sleeve is coaxially arranged at the lower part of the pin support plate.

[0010] The sleeper positioning device comprises a front sleeper positioning device and a rear sleeper alignment device, and the front sleeper positioning device and the rear sleeper alignment device are arranged at intervals along the longitudinal direction of the tunnel.

[0011] It also includes a track level adjustment device, which includes a horizontal distance plate, a level indicator is arranged on the top of the horizontal distance plate, track clamps are arranged at both ends of the horizontal distance plate, and a hydraulic jack is arranged below the horizontal distance plate.

[0012] The track clamp includes an L-shaped clamping plate integrally arranged with a horizontal distance plate, the L-shaped clamping plate having a vertical calibration surface connected to the inner wall of the track and a horizontal calibration surface connected to the top wall of the track, and the L-shaped clamping plate is also connected to an L-shaped hook plate via a spring cotter pin, and the L-shaped hook plate is clamped on the outer wall and lower bottom surface of the track.

[0013] The utility model provides a positioning device for the eccentric track of a TBM tunnel, including a sleeper positioning device and a track level adjustment device. The sleeper positioning device is arranged on the tunnel structure beam, and the positioning angle plate therein can be used to realize the positioning of the asymmetric sleeper and the positioning of the eccentric track on one side. The positioning angle plate can be raised and lowered and rotated, which can effectively avoid interference with locomotive transportation; the track level adjustment device can realize the spacing calibration and horizontal calibration adjustment of the eccentric tracks on both sides. The utility model has a simple structure and is easy to use. It can realize the rapid measurement and positioning of the installation position of the full-length eccentric track in the tunnel, thereby improving the measurement efficiency and reducing the labor cost. When the eccentric track is used in a small-diameter tunnel, the space on one side of the track is increased, and a continuous belt conveyor can be installed, which greatly facilitates the TBM construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the sleeper positioning device of the utility model.

[0015] Figure 2 It is a structural schematic diagram of the track level adjustment device of the utility model. DETAILED DESCRIPTION

[0016] The following is a detailed description of an embodiment of the utility model in conjunction with the accompanying drawings. This embodiment is implemented on the premise of the technical solution of the utility model, and a detailed implementation method and a specific operation process are given, but the protection scope of the utility model is not limited to the following embodiment.

[0017] The utility model discloses a positioning device for an eccentric track of a TBM tunnel, comprising a sleeper positioning device and a track level adjusting device.

[0018] like Figure 1 , 2 As shown, the sleeper positioning device is composed of a fixing member 1, a guide member 2 and a positioning angle plate 3, wherein the fixing member 1 is installed at the bottom of the tunnel structure beam K and extends downward, and a guide member 2 is coaxially arranged at its bottom. The guide member 2 is a round tube segment, and a ring plate with a diameter larger than the round tube segment is welded at its bottom as a stopper 21. An upper positioning hole 22 and a lower positioning hole 23 are arranged in the middle of the round tube segment. The central axis of the upper positioning hole 22 is arranged along the longitudinal direction of the tunnel, and the lower positioning hole 23 is staggered 90° with the upper positioning hole 22 and arranged on the outside of the eccentric sleeper M. The guide member 2 is connected to the positioning angle plate 3, and the sleeve portion of the positioning angle plate 3 is an annular structure adapted to the round tube segment of the guide member 2, which is sleeved on the round tube segment, and a connecting pin 31 connected to one of the upper positioning hole 22 and the lower positioning hole 23 is arranged on the annular structure. When the connecting pin 31 changes the insertion position, not only can the height of the positioning angle plate 3 be adjusted, but also its extension portion can be rotated to the outside of the eccentric sleeper to avoid interference with locomotive transportation. The extension of the positioning angle plate 3 has a vertical positioning surface 32 for positioning the eccentric track N, and the extension is provided with a positioning pin 33 for determining the position of the sleeper M. The positioning pin 33 is an L-shaped structure, and a pair of pin support plates 34 for inserting the positioning pin 33 are welded on the extension, and a positioning sleeve 35 for penetrating the positioning pin 33 is coaxially installed at the lower part of the pin support plate 34. When positioning the sleeper M, the positioning pin 33 in the pin support plate 34 is rotated 90° so that its hand-held part corresponds to the gap of the pin support plate 34, and then the positioning pin 33 is pushed down to move the positioning pin 33 downward along the positioning sleeve 35 until it is inserted into the calibration hole of the sleeper M, thereby completing the positioning of the sleeper M.

[0019] Usually, the sleeper positioning devices are arranged in pairs, including a front sleeper positioning device and a rear sleeper alignment device arranged at intervals along the longitudinal direction of the tunnel. The two devices work together to complete the positioning of the sleepers at the front and rear ends of the track section.

[0020] The track level adjustment device includes a horizontal distance plate 4, a level indicator 41 is provided on the top of the horizontal distance plate 4, and track clamps are provided at both ends thereof, the track clamps include an L-shaped clamp 42 integrally provided with the horizontal distance plate 4, the L-shaped clamp 42 has a vertical calibration surface connected to the inner wall of the track and a horizontal calibration surface connected to the top wall of the track, and the L-shaped clamp 42 is also connected to an L-shaped hook plate 44 through a spring cotter pin 43, and the L-shaped hook plate 44 is clamped on the outer wall and the lower bottom surface of the track. A hydraulic jack 45 is also provided between the horizontal distance plate 4 and the sleeper M cross beam.

[0021] During construction, the number of sleepers M is determined according to the length of the eccentric track N used for TBM locomotive transportation. First, a sleeper positioning device is set at each end of the eccentric track N, namely, a front sleeper positioning device and a rear sleeper alignment device. Then, each sleeper positioning device is operated, and both are in accordance with the following method: pre-install the sleeper M, then rotate the extension of the positioning angle plate 3 to the top of the sleeper M, and then rotate the positioning pin 33 so that it is inserted into the calibration hole on the sleeper M, and adjust the position of the sleeper M according to the indication of the positioning pin 33 to complete the positioning and fixation of the sleeper M. After the front and rear sleepers M are installed, several sleepers M in the middle are positioned and installed by the wire-stretching method. Afterwards, the right eccentric track N is positioned by the vertical positioning surface 32 of the positioning angle plate 3. After the right eccentric track N is installed, the left eccentric track N is installed on the sleeper M according to the track spacing, and finally the track horizontal adjustment device is used to check its spacing and horizontality. Specifically, the horizontal distance plate 4 is placed on the tracks N on both sides, and its levelness is detected by the level display 41, and the spacing is detected by the fit between the track N and the L-shaped card plate 42. If the heights of the tracks N on both sides are inconsistent, the L-shaped hook plate 44 is installed on the L-shaped card plate 42 to fix the track N. Then, a hydraulic jack 45 is placed between the horizontal distance plate 4 and the crossbeam of the sleeper M, and the tracks N on both sides are adjusted to the same height. A shim is placed under the track N with a lower elevation until the left and right tracks N are level. The above-mentioned track level adjustment device can slide along the entire length of the track N, which is convenient for checking the spacing and level of the entire track N.

[0022] It should be noted that, in the description of the present invention, terms indicating orientation or positional relationships, such as "front", "rear", "left", "right", "vertical", "horizontal", "inside", "outside", etc., are based on the orientation or positional relationships shown in the drawings and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

Claims

1. A positioning device for an eccentric track of a TBM tunnel, characterized in that: It comprises a sleeper positioning device, and the sleeper positioning device comprises: A fixing member is arranged at the bottom of the tunnel structure beam and extends downward; A guide member connected to the fixing member, a limiting member is arranged at the bottom of the guide member, and an upper positioning hole and a lower positioning hole are staggeredly arranged in the middle of the guide member; The positioning angle plate is sleeved on the guide member, a connecting pin is arranged on the sleeved portion of the positioning angle plate, an extended portion of the positioning angle plate has a vertical positioning surface for positioning the eccentric track, and a positioning pin shaft for determining the position of the sleeper is arranged on the extended portion.

2. The positioning device for the eccentric track of a TBM tunnel according to claim 1, characterized in that: The guide member is a columnar body, and the sleeve portion of the positioning angle plate is an annular structure adapted to the guide member. The upper positioning hole and the lower positioning hole are staggered at 90°, and the central axis of the upper positioning hole is arranged along the longitudinal direction of the tunnel. The lower positioning hole is arranged on the outside of the sleeper, and the connecting pin is connected to one of the upper positioning hole and the lower positioning hole.

3. The positioning device for the eccentric track of a TBM tunnel according to claim 1, characterized in that: The positioning pin shaft is an L-shaped structure, and a pin support plate for inserting the positioning pin shaft is arranged on the extension part, and a positioning sleeve is coaxially arranged at the lower part of the pin support plate.

4. The positioning device for the eccentric track of a TBM tunnel according to claim 1, characterized in that: The sleeper positioning device comprises a front sleeper positioning device and a rear sleeper alignment device, and the front sleeper positioning device and the rear sleeper alignment device are arranged at intervals along the longitudinal direction of the tunnel.

5. The positioning device for the eccentric track of a TBM tunnel according to claim 1, characterized in that: It also includes a track level adjustment device, which includes a horizontal distance plate, a level indicator is arranged on the top of the horizontal distance plate, track clamps are arranged at both ends of the horizontal distance plate, and a hydraulic jack is arranged below the horizontal distance plate.

6. The positioning device for the eccentric track of a TBM tunnel according to claim 5, characterized in that: The track clamp includes an L-shaped clamping plate integrally arranged with a horizontal distance plate, the L-shaped clamping plate having a vertical calibration surface connected to the inner wall of the track and a horizontal calibration surface connected to the top wall of the track, and the L-shaped clamping plate is also connected to an L-shaped hook plate via a spring cotter pin, and the L-shaped hook plate is clamped on the outer wall and lower bottom surface of the track.

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