Bottom arch slag pushing device of open type tunnel boring machine
By designing a bottom arch slag push device including a fixed seat, a sliding frame and a curved push shovel, the time-consuming and labor-intensive problem of manually cleaning gravel slag during the construction of an open tunnel boring machine is solved, and automatic cleaning is achieved, which improves the Construction efficiency and safety.
Patent Information
- Application Number
- CN202421078354.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-17
- Publication Date
- 2024-12-17
- Estimated Expiration
- 2034-05-17
AI Technical Summary
During the construction of an open tunnel boring machine, under adverse geological conditions, it is necessary to manually clean the gravel and slag at the bottom, which is time-consuming and labor-intensive, inefficient, and lacks automatic cleaning devices.
A bottom arch slag device including a fixed seat, a sliding frame, a driving oil cylinder and a curved push shovel is designed. The arc of the push shovel matches the bottom of the tunnel. By driving the oil cylinder, the sliding frame is driven forward and backward, push open and reset. Implement automatic cleaning.
The device can automatically push and reset the push shovel, saving time and effort, improve construction efficiency, simplify labor intensity, and is suitable for bottom cleaning when installing steel arch frames.
Smart Images
Figure CN222184772U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of tunnel boring equipment, in particular to a bottom arch slag pushing device for an open tunnel boring machine. Background Art
[0002] When an open tunnel boring machine is under construction, if it encounters poor geology, it is generally necessary to install a steel arch frame. However, there is often accumulation of gravel and slag at the bottom of the installation area. Before installation, manual cleaning is required, which is time-consuming, labor-intensive, and inefficient. There is an urgent need for a bottom arch slag pushing device for an open tunnel boring machine to replace manual cleaning. Utility Model Content
[0003] The utility model aims to overcome the shortcomings of the prior art and provide an open tunnel boring machine bottom arch slag pushing device.
[0004] In order to achieve the above-mentioned purpose, the technical solution provided by the utility model is that the bottom arch slag pushing device of the open tunnel boring machine comprises:
[0005] A fixing seat provided on the shield of the tunnel boring machine;
[0006] A sliding frame slidably arranged at the front end of the fixing seat and close to the bottom of the tunnel;
[0007] A driving cylinder for driving the sliding frame to move forward and backward relative to the fixed seat;
[0008] And, a push shovel connected to the front end of the sliding frame, the push shovel is bent into an arc in its length direction, the curvature of the push shovel matches the curvature of the bottom of the tunnel, and the bottom surface of the push shovel is in contact with the inner wall surface of the bottom of the tunnel.
[0009] Preferably, the bottom arch slag pushing device of the open-type tunnel boring machine also includes a guide cylinder arranged on the fixed seat, and the guide cylinder is used to guide the forward and backward sliding of the sliding frame. The guide cylinder includes an outer cylinder body connected to the fixed seat and extending in the forward and backward direction, and an inner cylinder rod slidably arranged in the outer cylinder body, and the front end of the inner cylinder rod is connected to the sliding frame.
[0010] Further preferably, there are two guide cylinders, and the two guide cylinders are symmetrically distributed on the left and right sides of the driving cylinder.
[0011] Further preferably, the guide cylinder is a rectangular cylinder, the cross-sections of the outer cylinder body and the inner cylinder rod are both rectangular, the side wall of the inner cylinder rod is connected to a plurality of guide ridges extending in the front-to-back direction, and the guide ridges are distributed on at least three side walls of the inner cylinder rod.
[0012] Further preferably, the fixing seat comprises an arc-shaped plate matching the curvature of the bottom of the tunnel, and reinforcing ribs welded to the inner wall surface of the arc-shaped plate, the reinforcing ribs extend vertically in the left-right direction, the reinforcing ribs have multiple paths and are spaced apart in the front-back direction, the outer cylinder is welded to the inner wall surface of the arc-shaped plate, and the outer cylinder passes through at least two of the reinforcing ribs and is welded to them.
[0013] Further preferably, the projection of the reinforcing rib in the front-rear direction is crescent-shaped, and a door arch-shaped gap for avoiding the driving cylinder is opened in the middle of the reinforcing rib.
[0014] Further preferably, the bottom arch slag pushing device of the open-type tunnel boring machine also includes a stabilizing beam, which is connected to the front end of the outer cylinder of the two guide cylinders and extends horizontally in the left-right direction, and the front end of the cylinder body of the driving cylinder is connected to the middle of the rear end surface of the stabilizing beam, and the hydraulic rod of the driving cylinder can move forward and backward through the stabilizing beam, and the front end of the hydraulic rod is hinged to the middle of the rear end surface of the sliding frame through a first hinge shaft, and the first hinge shaft extends horizontally in the left-right direction.
[0015] Preferably, the dozer blade is a hollow dozer blade, which includes an arc-shaped push plate matching the curvature of the bottom of the tunnel, a rear top plate vertically connected to the rear end of the arc-shaped push plate, and a diagonal support plate obliquely connected between the arc-shaped push plate and the rear top plate, the front end of the arc-shaped push plate protrudes from the diagonal support plate and is provided with a concave and convex toothed front edge, the rear surface of the rear top plate is connected to the sliding frame, and the inclination angle of the diagonal support plate is 30 to 50 degrees.
[0016] Further preferably, the rear surface of the rear top plate is hinged to the sliding frame via a second hinge shaft, the second hinge shaft extends horizontally in the left-right direction, there are two second hinge shafts, and the two second hinge shafts are symmetrically distributed on the left and right sides of the driving cylinder.
[0017] Preferably, the sliding frame is a box beam structure surrounded by four side panels, and the sliding frame is curved in an arc shape in its length direction, and the curvature of the sliding frame matches the curvature of the bottom of the tunnel.
[0018] Due to the application of the above technical solution, the utility model has the following advantages compared with the prior art:
[0019] The utility model provides an open-type tunnel boring machine bottom arch slag pushing device, comprising a fixed seat arranged on a tunnel boring machine shield, a sliding frame arranged at the front end of the fixed seat and close to the tunnel bottom and capable of sliding forward and backward, a driving oil cylinder for driving the sliding frame to move forward and backward relative to the fixed seat, and a pushing shovel connected to the front end of the sliding frame, the pushing shovel is bent into an arc in the length direction thereof, the arc of the pushing shovel matches the arc of the tunnel bottom, the bottom surface of the pushing shovel fits with the inner wall surface of the tunnel bottom, when installing a steel arch frame, the sliding frame can be driven to slide forward by the action of the driving oil cylinder, so that the pushing shovel pushes away the gravel and slag accumulated at the bottom of the installation area, after pushing away, the sliding frame is driven to slide backward and reset by the action of the driving oil cylinder, so that the installation area can be vacated for installing the steel arch frame, which saves time and effort and has high efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 It is a three-dimensional schematic diagram of a preferred embodiment of the utility model. At this time, the hydraulic rod of the driving cylinder is in an extended state.
[0021] Figure 2 It is a three-dimensional schematic diagram of a preferred embodiment of the utility model. At this time, the hydraulic rod of the driving cylinder is in a retracted state.
[0022] Figure 3 yes Figure 2 Schematic diagram of top view, in which the fixing seat is hidden for easy observation.
[0023] Figure 4 yes Figure 3 Schematic diagram of the right side.
[0024] Figure 5 , Figure 6 yes Figure 3 Schematic cross-sectional view along the AA direction, where: Figure 6 The dozer blade is in an upward tilted state.
[0025] Among them: 10. Fixed seat; 11. Arc plate; 12. Reinforced ribs; 13. Door arch notch; 20. Sliding frame; 21. First hinge shaft; 22. Second hinge shaft; 30. Driving cylinder; 31. Cylinder body; 32. Hydraulic rod; 40. Push shovel; 41. Arc push plate; 42. Rear top plate; 43. Diagonal support plate; 44. Toothed front edge; 50. Guide cylinder; 51. Outer cylinder body; 52. Inner cylinder rod; 53. Guide ridge; 60. Stabilizing beam. DETAILED DESCRIPTION
[0026] like Figures 1 to 6As shown, the bottom arch slag pushing device of an open-type tunnel boring machine provided by the utility model comprises a fixed seat 10 arranged on a shield body of the tunnel boring machine, a sliding frame 20 slidably arranged at the front end of the fixed seat 10 and close to the bottom of the tunnel, a driving cylinder 30 for driving the sliding frame 20 to move forward and backward relative to the fixed seat 10, and a push shovel 40 connected to the front end of the sliding frame 20, the push shovel 40 extends in the left-right direction, the push shovel 40 is bent into an arc in its length direction, the curvature of the push shovel 40 matches the curvature of the bottom of the tunnel, and the bottom surface of the push shovel 40 fits with the inner wall surface of the bottom of the tunnel.
[0027] The advantage of this arrangement is that when installing the steel arch frame, the sliding frame can be driven forward by driving the oil cylinder, so that the bulldozer can push away the gravel and debris accumulated at the bottom of the installation area. After pushing away, the sliding frame can be driven backward by driving the oil cylinder to slide and reset, thus freeing up the installation area for installing the steel arch frame, which saves time and effort and is highly efficient.
[0028] In this embodiment, the bottom arch slag pushing device of the open-type tunnel boring machine also includes a guide cylinder 50 arranged on the fixed seat 10, and the guide cylinder 50 is used to guide the forward and backward sliding of the sliding frame 20. The guide cylinder 50 includes an outer cylinder body 51 connected to the fixed seat 10 and extending in the forward and backward direction, and an inner cylinder rod 52 that can be slidably inserted into the outer cylinder body 51 forward and backward, and the front end of the inner cylinder rod 52 is connected to the sliding frame 20. Specifically, there are two guide cylinders 50, and these two guide cylinders 50 are symmetrically distributed on the left and right sides of the driving cylinder 30. Furthermore, the guide cylinder 50 is a rectangular cylinder, and the cross-sections of the outer cylinder body 51 and the inner cylinder rod 52 are both rectangular. To avoid jamming, the side walls of the inner cylinder rod 52 are also connected to a plurality of guide ridges 53 extending in the forward and backward direction, and the guide ridges 53 are distributed on at least three side walls of the inner cylinder rod 52.
[0029] In this embodiment, the fixing seat 10 includes an arc-shaped plate 11 matching the curvature of the bottom of the tunnel, and a reinforcing rib 12 welded to the inner wall of the arc-shaped plate 11. The reinforcing rib 12 extends vertically in the left-right direction. The reinforcing rib 12 has multiple reinforcing ribs and is arranged at intervals in the front-to-back direction. The outer cylinder 51 is welded to the inner wall of the arc-shaped plate 11. The outer cylinder 51 passes through two reinforcing ribs 12 and is welded thereto. Specifically, the projection of the reinforcing rib 12 in the front-to-back direction is crescent-shaped, and a door arch-shaped notch 13 for avoiding the driving cylinder 30 is opened in the middle of the reinforcing rib 12.
[0030] In this embodiment, the bottom arch slag pushing device of the open tunnel boring machine also includes a stabilizing beam 60, which is connected to the front end of the outer cylinder body of the two guide cylinders 50 and extends horizontally in the left-right direction. The front end of the cylinder body 31 of the driving cylinder 30 is connected to the middle of the rear end surface of the stabilizing beam 60, and the hydraulic rod 32 of the driving cylinder 30 can move forward and backward to penetrate the stabilizing beam 60. To avoid suffocation, the front end of the hydraulic rod 32 is further hinged to the middle of the rear end surface of the sliding frame 20 through the first hinge shaft 21, and the first hinge shaft 21 extends horizontally in the left-right direction.
[0031] In the present embodiment, the dozer 40 is a hollow dozer, which includes an arc-shaped push plate 41 matching the curvature of the bottom of the tunnel, a rear top plate 42 vertically connected to the rear end of the arc-shaped push plate 41, and a diagonal support plate 43 obliquely connected between the arc-shaped push plate 41 and the rear top plate 42. The front end of the arc-shaped push plate 41 protrudes from the diagonal support plate 43 and is provided with a concave and convex toothed front edge 44. The rear surface of the rear top plate 42 is connected to the sliding frame 20. The inclination angle of the diagonal support plate 43 is preferably 30 to 50 degrees (in the present embodiment, the angle is 40 degrees).
[0032] In order to prevent the bulldozer 40 from being stuck by stones embedded in the inner wall of the tunnel when the hydraulic rod 32 is retracted, in the present embodiment, the rear surface of the rear top plate 42 is hinged to the sliding frame 20 through a second hinge shaft 22, and the second hinge shaft 22 extends horizontally in the left and right directions. There are two second hinge shafts 22, and the two second hinge shafts 22 are symmetrically distributed on the left and right sides of the driving cylinder 30.
[0033] In this embodiment, the sliding frame 20 is a box beam structure surrounded by four side panels. The sliding frame 20 is curved in an arc shape in its length direction, and the curvature of the sliding frame 20 matches the curvature of the bottom of the tunnel.
[0034] The bottom arch slag pushing device of an open-type tunnel boring machine provided by the utility model is driven by a single driving oil cylinder, which not only eliminates the problem of synchronization of multiple oil cylinders, but also reduces the overall cost. At the same time, its maintenance is also simpler and more convenient, and is suitable for the renovation and improvement of old open-type tunnel boring machines that are not equipped with a bottom arch slag pushing device. In addition, a toothed leading edge is arranged on the pusher shovel, which can effectively reduce the resistance during pushing out. A diagonal support plate is arranged on the pusher shovel, which can also increase the rigidity and facilitate cleaning. When the hydraulic rod is extended, it acts on the sliding frame through three points of the inner cylinder rod, so that the slag pushing is more stable. When the hydraulic rod is retracted, the pusher shovel is hinged to the sliding frame at two points, so that the pusher shovel can rotate around the sliding frame to prevent it from getting stuck.
[0035] The above embodiments are only for illustrating the technical concept and features of the utility model, and their purpose is to enable people familiar with this technology to understand the content of the utility model and implement it accordingly. They cannot be used to limit the protection scope of the utility model. All equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.
Claims
1. An open tunnel boring machine bottom arch slag pushing device, characterized in that: include: A fixing seat provided on the shield of the tunnel boring machine; A sliding frame slidably arranged at the front end of the fixing seat and close to the bottom of the tunnel; A driving cylinder for driving the sliding frame to move forward and backward relative to the fixed seat; And, a push shovel connected to the front end of the sliding frame, the push shovel is bent into an arc in its length direction, the curvature of the push shovel matches the curvature of the bottom of the tunnel, and the bottom surface of the push shovel is in contact with the inner wall surface of the bottom of the tunnel.
2. The bottom arch slag pushing device of an open tunnel boring machine according to claim 1, characterized in that: The bottom arch slag pushing device of the open-type tunnel boring machine also includes a guide cylinder arranged on the fixed seat, and the guide cylinder is used to guide the forward and backward sliding of the sliding frame. The guide cylinder includes an outer cylinder body connected to the fixed seat and extending in the forward and backward directions, and an inner cylinder rod slidably arranged in the outer cylinder body, and the front end of the inner cylinder rod is connected to the sliding frame.
3. The bottom arch slag pushing device of an open tunnel boring machine according to claim 2, characterized in that: There are two guide cylinders, which are symmetrically distributed on the left and right sides of the driving cylinder.
4. The bottom arch slag pushing device of an open tunnel boring machine according to claim 2, characterized in that: The guide cylinder is a rectangular cylinder, the cross sections of the outer cylinder body and the inner cylinder rod are both rectangular, the side wall of the inner cylinder rod is connected to a plurality of guide ridges extending in the front-to-back direction, and the guide ridges are distributed on at least three side walls of the inner cylinder rod.
5. The bottom arch slag pushing device of an open tunnel boring machine according to claim 2, characterized in that: The fixing seat includes an arc-shaped plate matching the curvature of the bottom of the tunnel, and a reinforcing rib welded to the inner wall of the arc-shaped plate. The reinforcing rib extends vertically in the left-right direction. The reinforcing rib has multiple reinforcing ribs and is arranged at intervals in the front-back direction. The outer cylinder is welded to the inner wall of the arc-shaped plate, and the outer cylinder passes through at least two reinforcing ribs and is welded to them.
6. The bottom arch slag pushing device of an open tunnel boring machine according to claim 5, characterized in that: The projection of the reinforcing rib in the front-rear direction is crescent-shaped, and a door arch-shaped notch for avoiding the driving oil cylinder is opened in the middle of the reinforcing rib.
7. The bottom arch slag pushing device of an open tunnel boring machine according to claim 3, characterized in that: The bottom arch slag pushing device of the open tunnel boring machine also includes a stabilizing beam, which is connected to the front end of the outer cylinder of the two guide cylinders and extends horizontally in the left and right direction. The front end of the cylinder body of the driving cylinder is connected to the middle of the rear end surface of the stabilizing beam. The hydraulic rod of the driving cylinder can move forward and backward and penetrate the stabilizing beam. The front end of the hydraulic rod is hinged to the middle of the rear end surface of the sliding frame through a first hinge shaft, and the first hinge shaft extends horizontally in the left and right direction.
8. The bottom arch slag pushing device of an open tunnel boring machine according to claim 1, characterized in that: The dozer blade is a hollow dozer blade, which includes an arc-shaped push plate matching the curvature of the bottom of the tunnel, a rear top plate vertically connected to the rear end of the arc-shaped push plate, and a diagonal support plate obliquely connected between the arc-shaped push plate and the rear top plate. The front end of the arc-shaped push plate protrudes from the diagonal support plate and is provided with a concave and convex toothed front edge. The rear surface of the rear top plate is connected to the sliding frame, and the inclination angle of the diagonal support plate is 30 to 50 degrees.
9. The bottom arch slag pushing device of an open tunnel boring machine according to claim 8, characterized in that: The rear surface of the rear top plate is hinged to the sliding frame via a second hinge shaft, and the second hinge shaft extends horizontally in the left-right direction. There are two second hinge shafts, and the two second hinge shafts are symmetrically distributed on the left and right sides of the driving cylinder.
10. The bottom arch slag pushing device of an open tunnel boring machine according to claim 1, characterized in that: The sliding frame is a box beam structure surrounded by four side plates. The sliding frame is curved in an arc shape in its length direction, and the curvature of the sliding frame matches the curvature of the bottom of the tunnel.