Spraying section material receiving turning plate for TBM (tunnel boring machine)

Abstract

The utility model relates to a guniting section material receiving turning plate for a TBM, and belongs to the technical field of TBM tunneling. The vibrating mechanism, the material receiving plate and the overturning frame are matched, the vibrating mechanism enables the material receiving plate to vibrate, springback materials collected on the material receiving plate can be shaken off into the material collecting groove, the springback materials generated in the concrete spraying process can be collected in time, the follow-up cleaning difficulty is reduced, the working efficiency is greatly improved, and meanwhile the labor intensity of workers is reduced. The workload of manually cleaning the springback material is reduced, and the labor cost and the labor intensity are reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of TBM excavation, and particularly relates to a spraying section material connection flap for a TBM. Background Art

[0002] In tunnel construction, full-face tunnel boring machines (TBMs) are widely used for tunnel excavation. During TBM construction, to ensure the stability and safety of the tunnel walls, shotcrete spraying is often required on the excavated walls.

[0003] However, due to the circular shape of the tunnel wall, a large amount of rebound material is easily generated during the concrete spraying process, especially when spraying the top and sides of the tunnel. These rebound materials fall to the bottom of the tunnel. Due to safety hazards at the bottom of the tunnel wall during the shotcrete operation, personnel cannot be arranged for manual cleaning, resulting in the rebound material hardening due to untimely cleaning, which brings great difficulties to the subsequent cleaning work. It is not only time-consuming and labor-intensive, increasing labor costs, but also low work efficiency, seriously affecting the construction progress. Utility Model Content

[0004] In order to overcome the problem in the background technology that during the operation of shotcrete spraying on the tunnel wall, there is a safety hazard at the bottom of the tunnel wall, and personnel cannot be arranged for manual cleaning, resulting in the hardening of the rebound material due to untimely cleaning, which brings great difficulties to the subsequent cleaning work. Not only does it increase labor costs, but it also has low work efficiency and seriously affects the construction progress. The utility model provides a TBM shotcrete section material receiving flap; through the cooperation of a vibration mechanism, a material receiving plate and a turnover frame, the vibration mechanism causes the material receiving plate to vibrate, which helps to shake the rebound material collected on the material receiving plate into the aggregate trough, and can timely collect the rebound material generated in the process of shotcrete spraying, reducing the difficulty of subsequent cleaning, greatly improving work efficiency, and at the same time, reducing the workload of manual cleaning of the rebound material, reducing labor costs and labor intensity.

[0005] To achieve the above-mentioned purpose, the present invention is implemented through the following technical solutions: a TBM shotcrete section material receiving flap includes a bracket, and is characterized in that: the TBM shotcrete section material receiving flap also includes a flip frame, a material receiving plate, an elastic component, a vibration mechanism, a hydraulic cylinder, and a material collection trough. The flip frame is hinged at the bottom end of the bracket, and the material receiving plate is installed on the flip frame through the elastic component. One end of the hydraulic cylinder is hinged to the bracket, and the other end is hinged to the material receiving plate. Both ends of the flip frame are equipped with vibration mechanisms for driving the material receiving plate to vibrate, and the vibration mechanism is located at the bottom end of the material receiving plate; a material collection trough for collecting rebound material is installed on the bracket, and the open end of the material collection trough is located at the lower edge of the material receiving plate.

[0006] The elastic component includes a guide rod and a spring. The flip frame includes multiple groups of support beams hinged at the bottom end of the bracket. Two groups of connecting beams are longitudinally installed between adjacent support beams. A through hole for the guide rod to pass through is opened on the connecting beam. One end of the guide rod passes through the through hole of the connecting beam and is threadedly connected to the bottom of the material receiving plate. The spring is sleeved on the guide rod, and the bottom end is tightly pressed against the nut on the guide rod, and the top end is tightly pressed against the bottom surface of the connecting beam.

[0007] The vibration mechanism includes a motor, a rotating shaft, and a cam. The rotating shaft is installed on the support beam through a bearing. The cam is installed on the rotating shaft and is in rolling contact with the bottom of the receiving plate. The motor is installed on the turning frame and is located at the bottom end of the receiving plate. The motor is connected to the rotating shaft through a transmission.

[0008] The end of the connecting plate is provided with a plurality of rubber sheets for fitting to the tunnel wall.

[0009] Beneficial effects of the utility model:

[0010] The utility model cooperates with the vibration mechanism, the material receiving plate and the turning frame. The vibration mechanism causes the material receiving plate to vibrate, which helps to shake off the rebound material collected on the material receiving plate into the aggregate trough. The rebound material generated in the process of shotcrete can be collected in time, which reduces the difficulty of subsequent cleaning and greatly improves work efficiency. At the same time, the workload of manual cleaning of the rebound material is reduced, and the labor cost and labor intensity are reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is an axonometric drawing of the present utility model.

[0012] Figure 2 It is a three-dimensional schematic diagram of the utility model when viewed from above.

[0013] Figure 3 It is a three-dimensional schematic diagram of the installation status of the vibration mechanism.

[0014] Figure 4 yes Figure 3 A partial enlarged view of point A in the middle.

[0015] Figure 5 It is a side view of the utility model.

[0016] Figure 6 It is the main view of the utility model. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solutions and beneficial effects of the present invention clearer, the preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings to facilitate understanding by technicians.

[0018] The utility model discloses a TBM shotcrete section material receiving flap, which includes a bracket 1 and is characterized in that: the TBM shotcrete section material receiving flap also includes a turnover frame 2, a material receiving plate 3, an elastic component 4, a vibration mechanism 5, a hydraulic cylinder 6, and a material collection trough 7, the turnover frame 2 is hinged at the bottom end of the bracket 1, the material receiving plate 3 is installed on the turnover frame 2 through the elastic component 4, one end of the hydraulic cylinder 6 is hinged on the bracket 1, and the other end is hinged on the material receiving plate 3, both ends of the turnover frame 2 are equipped with a vibration mechanism 5 for driving the material receiving plate 3 to vibrate, and the vibration mechanism 5 is located at the bottom end of the material receiving plate 3; a material collection trough 7 for collecting rebound material is installed on the bracket 1, and the open end of the material collection trough 7 is located at the lower edge of the material receiving plate 3.

[0019] Before the TBM performs the shotcrete operation, the hydraulic cylinder 6 drives the turning frame 2 to rotate, thereby adjusting the inclination angle of the material receiving plate 3 so that the upper edge of the material receiving plate 3 contacts the tunnel wall. Then, the vibration mechanism 5 is started to drive the material receiving plate 3 to vibrate. When the rebound material generated during the shotcrete operation falls on the material receiving plate 3, due to the vibration, the rebound material will slide along the material receiving plate 3 into the collecting trough 7. After the concrete spraying operation is completed, the hydraulic cylinder drives the turning frame 2 to rotate in the opposite direction, so that the material receiving plate 3 tends to a vertical state, which is convenient for the operator to clean and maintain the material receiving plate 3, and finally the rebound material in the trough 5 is manually processed. The utility model can collect the rebound material generated during the TBM construction process in time, improves work efficiency, reduces labor costs and labor intensity, and ensures construction safety and quality.

[0020] The elastic component 4 includes a guide rod 401 and a spring 402. The flip frame 2 includes multiple groups of support beams 201 hinged at the bottom end of the bracket 1. Two groups of connecting beams 202 are longitudinally installed between adjacent support beams 201. A through hole for the guide rod 401 to pass through is opened on the connecting beam 202. One end of the guide rod 401 passes through the through hole of the connecting beam 202 and is threadedly connected to the bottom of the receiving plate 3. The spring 402 is sleeved on the guide rod 401, and the bottom end is tightly pressed against the nut on the guide rod 401, and the top end is tightly pressed against the bottom surface of the connecting beam 202; the vibration mechanism 5 includes a motor 501, a rotating shaft 502, and a cam 503. The shaft 502 is mounted on the support beam 201 through a bearing, the cam 503 is mounted on the rotating shaft 502 and in rolling contact with the bottom of the receiving plate 3, the motor 501 is mounted on the turning frame 2, located at the bottom end of the receiving plate 3, and the motor 501 is connected to the rotating shaft 502; start the 501 motor, and the rotating shaft 502 and the cam 503 are driven to rotate by the motor 501. The profile of the cam 503 will cause the receiving plate 3 to reciprocate up and down, thereby causing the receiving plate 3 to vibrate, which helps to shake the rebound material from the receiving plate 3 into the collecting trough 7, which is convenient for manual collection and avoids the problem of the rebound material accumulating for too long and adhering to the receiving plate 3.

[0021] The end of the splicing plate 3 is equipped with multiple rubber sheets 8 for fitting the tunnel wall; the rubber sheets 8 can fit tightly to the tunnel wall to form a relatively sealed space, preventing the rebound material from leaking out of the gap between the splicing plate 3 and the tunnel wall, thereby improving the splicing efficiency.

[0022] Working process:

[0023] After the concrete is sprayed, the turning frame 2 is driven by the hydraulic cylinder 6 to rotate, thereby adjusting the inclination angle of the material receiving plate 3 so that the upper edge of the material receiving plate 3 contacts the tunnel wall. Then, the motor 501 is started, and the rotating shaft 502 and the cam 503 are driven to rotate by the motor 501. The profile of the cam 503 causes the material receiving plate 3 to reciprocate up and down, thereby causing the material receiving plate 3 to vibrate, which helps to shake off the rebound material from the material receiving plate 3 into the collecting trough 7, and at the same time avoids the problem of the rebound material accumulating for too long and adhering to the material receiving plate 3; after the concrete spraying operation is completed, the turning frame 2 is driven by the hydraulic cylinder to rotate in the opposite direction, so that the material receiving plate 3 tends to a vertical state, which is convenient for the operator to clean and maintain the material receiving plate 3, and finally the rebound material in the trough 5 is manually processed; the utility model can timely collect the rebound material generated during the TBM construction process, improves work efficiency, reduces labor costs, and ensures construction safety and quality.

[0024] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention and are not limiting. Although the present invention has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the scope defined by the claims of the present invention.

Claims

1. A TBM shotcrete section material connection flap, comprising a bracket (1), characterized in that: The TBM shotcrete section material receiving flap further comprises a turning frame (2), a material receiving plate (3), an elastic component (4), a vibration mechanism (5), a hydraulic cylinder (6), and a material collecting trough (7). The turning frame (2) is hinged at the bottom end of the bracket (1), the material receiving plate (3) is mounted on the turning frame (2) via the elastic component (4), one end of the hydraulic cylinder (6) is hinged to the bracket (1), and the other end is hinged to the material receiving plate (3). Both ends of the turning frame (2) are equipped with a vibration mechanism (5) for driving the material receiving plate (3) to vibrate, and the vibration mechanism (5) is located at the bottom end of the material receiving plate (3); and a material collecting trough (7) for collecting rebound material is installed on the bracket (1), and the open end of the material collecting trough (7) is located at the lower edge of the material receiving plate (3).

2. The TBM shotcrete section material connection flap according to claim 1, characterized in that: The elastic component (4) includes a guide rod (401) and a spring (402). The flip frame (2) includes multiple groups of support beams (201) hinged at the bottom end of the bracket (1). Two groups of connecting beams (202) are longitudinally installed between adjacent support beams (201). A through hole for the guide rod (401) to pass through is opened on the connecting beam (202). One end of the guide rod (401) passes through the through hole of the connecting beam (202) and is threadedly connected to the bottom of the connecting plate (3). The spring (402) is sleeved on the guide rod (401), with the bottom end pressed against the nut on the guide rod (401) and the top end pressed against the bottom surface of the connecting beam (202).

3. The TBM shotcrete section material connection flap according to claim 2, characterized in that: The vibration mechanism (5) includes a motor (501), a rotating shaft (502), and a cam (503). The rotating shaft (502) is mounted on the support beam (201) via a bearing. The cam (503) is mounted on the rotating shaft (502) and is in rolling contact with the bottom of the receiving plate (3). The motor (501) is mounted on the turning frame (2) and is located at the bottom end of the receiving plate (3). The motor (501) is connected to the rotating shaft (502) in a transmission manner.

4. A TBM shotcrete section material connection flap according to claim 1 or 3, characterized in that: The end of the connecting plate (3) is equipped with a plurality of rubber sheets (8) for fitting against the tunnel wall.

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