A shield tunneling jumbo protection device

Abstract

The utility model relates to tunnel construction equipment technical field, concretely relates to a protection device for tunnel shield jumbo, one end of shield door frame is provided with the support plate, a plurality of support components are arranged between support plate and shield door frame, one end of support component is hinged with shield door frame, the other end is connected with support plate slidingly, support plate includes the support middle plate hinged with shield door frame, right support side plate and left support side plate, support middle plate is above right support side plate and left support side plate in vertical direction, both door frame uprights are rotatably connected with side door plate, the inside of side door plate is provided with push -and -pull subassembly, one end of push -and -pull subassembly is hinged with door frame upright, the other end is connected with side door plate slidingly, the utility model contracts and shields shield jumbo front end opening, so that construction equipment does not have to withdraw the distance work place far position, has improved construction efficiency, the device can shield the falling broken stone, can ensure the safety of construction equipment and personnel.

Description

Technical Field

[0001] This utility model relates to the field of tunnel construction equipment technology, specifically to a protective device for a tunnel shield trolley. Background Technology

[0002] During the drill-and-blast method of tunnel construction, flying debris is one of the most dangerous factors. Therefore, personnel inside the tunnel need to be evacuated to ensure their safety, and equipment inside the tunnel also needs to be moved back hundreds of meters to ensure the safety of the equipment. When construction resumes, the equipment needs to be moved back to the vicinity of the tunnel face, which not only wastes time and reduces construction efficiency, but also consumes fuel and shortens the equipment's lifespan due to the repeated entry and exit of the equipment, adding unnecessary costs to the construction. During normal construction, the disturbance of the tunnel walls poses a risk of falling debris, which can also damage construction equipment and personnel. Summary of the Invention

[0003] This invention addresses the problems of reduced construction efficiency during tunnel blasting due to the need for equipment to retreat a considerable distance, and the potential for damage to equipment and personnel from falling debris during normal construction. It provides a protective device for a tunnel shield trolley. During tunnel blasting, this device retracts to cover the open front of the shield trolley, protecting the construction equipment inside the shield and eliminating the need for equipment to be moved far from the work site, thus improving construction efficiency. Simultaneously, during normal construction, the device can be extended to shield against falling debris, ensuring the safety of construction equipment and personnel.

[0004] To achieve the above objectives, the technical solution of this utility model is: a protective device for a tunnel shield gantry, comprising a shield gantry and two gantry columns disposed at the front end of the shield gantry. A support plate is provided at one end of the shield gantry, and a plurality of support components are spaced apart between the support plate and the shield gantry. One end of each support component is hinged to the shield gantry, and the other end is slidably connected to the support plate. The angle of the support plate can be adjusted through the support components, allowing the support plate to be retracted or extended, thus enabling the support plate to provide shielding and protection during both tunnel blasting and normal construction operations.

[0005] The support plate includes a central support plate, a right support side plate, and a left support side plate, which are hinged to the shield gantry. The central support plate is located vertically above the right and left support side plates. The central support plate, right support side plate, and left support side plate can be retracted or extended respectively through support components.

[0006] Both of the aforementioned gantry columns are rotatably connected to side door panels. A push-pull assembly is installed on the inner side of each side door panel. One end of the push-pull assembly is hinged to the gantry column, and the other end is slidably connected to the side door panel. The push-pull assembly can drive the side door panel to rotate relative to the gantry column, thereby adjusting the opening angle of the side door panel. This allows the side door, together with the support plate, to form a shield around the front opening of the shield trolley, protecting against flying or falling rocks inside the tunnel and safeguarding the construction equipment.

[0007] Furthermore, the shield gantry is equipped with a shield plate hinge seat and a hydraulic cylinder hinge seat. Hinges are fixedly connected to the rear ends of the middle support plate, the right support side plate, and the left support side plate, and these hinges are hinged to the shield plate hinge seats. The cooperation between the hinges and the shield plate hinge seats allows the middle support plate, the right support side plate, and the left support side plate to retract or extend.

[0008] Furthermore, the support assembly is provided between the middle support plate, the right support side plate, and the left support side plate and the shield gantry. The support assembly includes a support cylinder and a first slide block hinged to the piston end of the support cylinder. The middle support plate, the right support side plate, and the left support side plate are retracted or extended by the telescopic movement of the piston end of the support cylinder.

[0009] Furthermore, the inner sides of the middle support plate, right support side plate, and left support side plate are all laterally provided with first sliding grooves. The first sliding block is slidably disposed within the first sliding groove, and the tail end of the support cylinder is hinged to the cylinder hinge seat. The first sliding block can slide within the first sliding groove through the extension and retraction of the piston end of the support cylinder, thereby changing the position of the support point of the support cylinder and thus realizing the angle adjustment of the middle support plate, right support side plate, and left support side plate.

[0010] Furthermore, the middle support plate, the right support side plate, and the left support side plate are all arc-shaped structures. The width of the middle support plate is greater than the distance between the upper ends of the right and left support side plates, ensuring that the space between the right and left support side plates can be completely covered.

[0011] Furthermore, the gantry column is equipped with a side hinge seat and a side hydraulic cylinder hinge seat, and an ear plate is fixedly connected to the rear end of the side door panel, the ear plate being hinged to the side hinge seat; a second sliding groove is laterally opened on the inner side of the side door panel. The cooperation between the ear plate and the side hinge seat facilitates the opening and closing of the side door panel.

[0012] Furthermore, the push-pull assembly includes a side-pull hydraulic cylinder and a second slide block hinged to the piston end of the side-pull hydraulic cylinder. The second slide block is slidably disposed within the second slide groove, and the tail end of the side-pull hydraulic cylinder is hinged to the side-pull hydraulic cylinder hinge block. The second slide block can slide within the second slide groove through the extension and retraction of the piston end of the side-pull hydraulic cylinder, thereby changing the position of the support point of the side-pull hydraulic cylinder and thus adjusting the opening angle of the side door panel.

[0013] The beneficial effects of this utility model through the above technical solution are as follows: This utility model has a reasonable structure and good performance. During tunnel blasting, the construction equipment can be retreated to the inside or rear of the shield trolley. The retraction of the support plates and side doors covers the open front of the shield trolley, protecting the construction equipment inside from flying rocks. This eliminates the need for the equipment to be moved far from the work site, saving fuel and time, extending the service life of the equipment, and enabling rapid deployment and operation, thus improving construction efficiency. Simultaneously, during normal construction, the unfolding of the support plates and side doors can shield the debris falling from the tunnel walls due to blasting disturbance, diverting the debris to the surrounding area of ​​the tunnel walls and ensuring the safety of construction equipment and personnel.

[0014] The central support plate, right support side plate, and left support side plate of this utility model can be retracted or expanded respectively through the telescopic movement of the support components, thereby changing the position of the support points of the support components and adjusting the angle of the central support plate, right support side plate, and left support side plate. The push-pull component can drive the side door plate to rotate relative to the gantry column, thereby adjusting the opening and closing angle of the side door plate. This allows the side door to work together with the support plate to shield the front opening of the shield trolley, thus protecting the construction equipment from flying rocks or falling rocks in the tunnel. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a protective device for a tunnel shield trolley according to this utility model. Figure 1 (Guard panel in unfolded state); Figure 2 This is a schematic diagram of the structure of a protective device for a tunnel shield trolley according to this utility model. Figure 2 (Guard panel in unfolded state); Figure 3 This is a schematic diagram of the structure of a protective device for a tunnel shield trolley according to this utility model. Figure 3 (Guardboard retracted state); Figure 4 yes Figure 1 A magnified structural diagram of point A in the middle.

[0016] The attached diagram is labeled as follows: 1 is the shield gantry, 101 is the guard plate hinge seat, 102 is the hydraulic cylinder hinge seat, 2 is the support middle plate, 3 is the right support side plate, 4 is the left support side plate, 5 is the hinge plate, 6 is the support hydraulic cylinder, 7 is the first slide groove, 8 is the first slide block, 9 is the side door plate, 10 is the second slide groove, 11 is the second slide block, 12 is the side pull hydraulic cylinder, 13 is the gantry column, 14 is the side hinge seat, and 15 is the side hydraulic cylinder hinge seat. Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings and specific embodiments: like Figures 1-4 As shown, a protective device for a tunnel shield gantry includes a shield gantry 1 and two gantry columns 13 located at the front end of the shield gantry 1. A support plate is provided at one end of the shield gantry 1, and several support components are spaced apart between the support plate and the shield gantry 1. One end of each support component is hinged to the shield gantry 1, and the other end is slidably connected to the support plate. In this embodiment, the support components drive the support plate to move, allowing adjustment of the support plate's angle to enable it to retract and expand. This provides protection for the construction equipment during both tunnel blasting and normal construction, preventing damage to equipment and personnel from flying debris or falling rocks.

[0018] The support plate includes a middle support plate 2, a right support side plate 3, and a left support side plate 4, which are hinged to the shield gantry 1. The middle support plate 2 is located above the right support side plate 3 and the left support side plate 4 in the vertical direction. In this embodiment, under the driving action of the support assembly, the middle support plate 2, the right support side plate 3, and the left support side plate 4 can rotate relative to the shield gantry 1, thereby achieving the effect of driving the middle support plate 2, the right support side plate 3, and the left support side plate 4 to retract or expand. The support assembly also provides support for the middle support plate 2, the right support side plate 3, and the left support side plate 4.

[0019] Side door panels 9 are rotatably connected to both of the gantry columns 13. A push-pull assembly is provided on the inner side of each side door panel 9. One end of the push-pull assembly is hinged to the gantry column 13, and the other end is slidably connected to the side door panel 9. In this embodiment, the push-pull assembly can push or pull the side door panel 9 to rotate relative to the gantry column 13, adjusting the opening angle of the side door panel 9. The side door panel 9, together with the support plate, forms a shield to cover the front opening of the shield trolley, thereby shielding against flying or falling rocks in the tunnel and protecting the construction equipment. During tunnel blasting, the two push-pull assemblies drive the two side door panels 9 to close towards the center, while during normal construction, the two push-pull assemblies drive the two side door panels 9 to unfold outwards. Furthermore, when the support plate retracts by tilting downwards, to ensure the retraction of the support plate proceeds normally, the push-pull assembly first drives the side door panel 9 to retract.

[0020] The shield gantry 1 is equipped with a shield plate hinge seat 101 and a hydraulic cylinder hinge seat 102. Hinges 5 are fixedly connected to the rear ends of the support middle plate 2, the right support side plate 3, and the left support side plate 4. The hinges 5 are hinged to the shield plate hinge seat 101. In this embodiment, the hinges 5 are hinged to the shield plate hinge seat 101 via pins. With the cooperation of the hinges 5 and the shield plate hinge seat 101, the support assembly can drive the support middle plate 2, the right support side plate 3, and the left support side plate 4 to retract or extend.

[0021] The support components are all provided between the support center plate 2, the right support side plate 3, and the left support side plate 4 and the shield gantry 1. Each support component includes a support cylinder 6 and a first slide block 8 hinged to the piston end of the support cylinder 6. In this embodiment, there are two support components between the support center plate 2, the right support side plate 3, and the left support side plate 4 and the shield gantry 1, and the two support components are installed alternately, enabling the support center plate 2, the right support side plate 3, and the left support side plate 4 to individually retract or expand. The piston end of the support cylinder 6 is hinged to the first slide block 8 via a pin.

[0022] The inner sides of the support plate 2, right support side plate 3, and left support side plate 4 are all provided with first sliding grooves 7 laterally. The first sliding block 8 is slidably disposed in the first sliding groove 7. The tail end of the support cylinder 6 is hinged to the cylinder hinge seat 102. In this embodiment, there are two first sliding grooves 7 on the inner sides of the support plate 2, right support side plate 3, and left support side plate 4. Both the first sliding block 8 and the first sliding groove 7 can be in the shape of a "T". When the piston end of the support cylinder 6 extends or retracts, it can drive the first sliding block 8 to move in the first sliding groove 7, thereby driving the support plate to retract or extend. The tail end of the support cylinder 6 is also equipped with an ear plate, which is hinged to the cylinder hinge seat 102 by a pin.

[0023] The central support plate 2, right support side plate 3, and left support side plate 4 are all arc-shaped. The purpose of this is to change the direction of flying rocks and separate them to both sides of the tunnel wall, thereby preventing flying rocks from hitting and damaging the construction equipment inside the shield vehicle. It also helps flying rocks to fall to the ground as soon as they are obstructed. The width of the central support plate 2 is greater than the distance between the upper ends of the right support side plate 3 and the left support side plate 4. The purpose of this is to ensure that the space between the right support side plate 3 and the left support side plate 4 can be completely covered, preventing falling rocks from passing through the central support plate 2 and the right support side plate 3 and the left support side plate 4 and causing damage to construction equipment and personnel.

[0024] The gantry column 13 is provided with a side hinge seat 14 and a side hydraulic cylinder hinge seat 15. The rear end of the side door panel 9 is fixedly connected to an ear plate, which is hinged to the side hinge seat 14. A second sliding groove 10 is laterally opened on the inner side of the side door panel 9. In this embodiment, the ear plate is hinged to the side hinge seat 14 by a pin, so that the push-pull assembly can drive the side door panel 9 to perform opening and closing movements.

[0025] The push-pull assembly includes a side-pull cylinder 12 and a second slide block 11 hinged to the piston end of the side-pull cylinder 12. The second slide block 11 is slidably disposed within the second slide groove 10. The tail end of the side-pull cylinder 12 is hinged to a side cylinder hinge block 15. In this embodiment, both the second slide block 11 and the second slide groove 10 can be T-shaped. When the piston end of the side-pull cylinder 12 extends or retracts, it can drive the second slide block 11 to move within the second slide groove 10, thereby driving the side door panel 9 to retract or extend. The tail end of the side-pull cylinder 12 is also equipped with an ear plate, which is hinged to the side cylinder hinge block 15 via a pin.

[0026] The working principle of this utility model is as follows: When blasting is required for tunnel excavation, the construction equipment is moved to the rear of the shield trolley or to the rear of the shield trolley. First, the two side-pulling cylinders 12 drive the two side door panels 9 to close towards the middle. The piston end of the side-pulling cylinder 12 retracts, and the second slide block 11 slides to the right in the second slide groove 10. The second slide block 11 drives the side door panel 9 to rotate relative to the gantry column 13, so that the side door panel 9 performs a closing action. Then, the right support side plate 3 and the left support side plate 4... The lower support cylinder 6 drives the right support side plate 3 and the left support side plate 4 to tilt downwards. The piston end of the support cylinder 6 retracts, causing the first slide block 8 to slide to the right in the first slide groove 7. The two first slide blocks 8 drive the right support side plate 3 and the left support side plate 4 to rotate relative to the shield gantry 1, so that the support side plate 3 and the left support side plate 4 can retract. Finally, the support middle plate 2 tilts downwards, and the piston end of the support cylinder 6 retracts, causing the support middle plate 2 to retract. The side panel 9 is located below the right support side panel 3 and the left support side panel 4, and also provides some support for the right support side panel 3 and the left support side panel 4. The two side panels 9, the right support side panel 3, the left support side panel 4, and the support middle plate 2 successively close towards the middle, and work together to block the open front of the shield trolley, preventing flying rocks from impacting and damaging the construction equipment. The arc-shaped surfaces of the support middle plate 2, the right support side panel 3, and the left support side panel 4 can change the direction of flying rocks, separating them to both sides of the tunnel wall, thereby preventing flying rocks from impacting and damaging the construction equipment inside the shield trolley, and also helping flying rocks to fall to the ground as soon as they encounter obstruction.

[0027] When construction equipment needs to operate after tunnel blasting, the central support plate 2, right side support plate 3, left side support plate 4, and two side door plates 9 are deployed sequentially. First, the central support plate 2 is deployed, followed by the right side support plate 3 and left side support plate 4. After these are deployed, the two side door plates 9 are deployed last, ensuring that the movements of the central support plate 2, right side support plate 3, left side support plate 4, and two side door plates 9 do not interfere with each other. Then, the front opening of the shield trolley is opened, allowing construction equipment to operate through the working face. The central support plate 2, right side support plate 3, left side support plate 4, and two side door plates 9 shield and protect the loose rock debris on the tunnel wall, ensuring that any falling rocks can slide down the arc surface formed by the support plates to the sides of the tunnel, ensuring the safety of construction equipment and personnel. In addition, the lower part of the shield gantry 1 has a tracked walking mechanism. The tracked walking mechanism is existing technology and will not be described in detail here. It enables the shield trolley equipment to move forward and backward in a timely manner according to the actual situation of the tunnel, so as to achieve flexible protection for construction personnel and equipment and ensure the safety of the operation.

[0028] The embodiments described above are merely preferred embodiments of the utility model and are not intended to limit the scope of the utility model. Therefore, all equivalent changes or modifications made to the technical solutions described in the scope of the utility model patent application should be included within the scope of the utility model patent application.

Claims

1. A protective device for a tunnel shield trolley, comprising a shield gantry (1) and two gantry columns (13) disposed at the front end of the shield gantry (1), characterized in that, One end of the shield gantry (1) is provided with a support plate, and several support components are arranged at intervals between the support plate and the shield gantry (1). One end of the support component is hinged to the shield gantry (1), and the other end is slidably connected to the support plate. The support plate includes a support center plate (2), a right support side plate (3) and a left support side plate (4) that are hinged to the shield gantry (1). The support center plate (2) is located above the right support side plate (3) and the left support side plate (4) in the vertical direction. Both of the gantry columns (13) are rotatably connected to side door panels (9). A push-pull assembly is provided on the inner side of the side door panel (9). One end of the push-pull assembly is hinged to the gantry column (13), and the other end is slidably connected to the side door panel (9).

2. The protective device for a tunnel shield trolley according to claim 1, characterized in that, The shield gantry (1) is provided with a guard plate hinge seat (101) and a hydraulic cylinder hinge seat (102). The rear ends of the support middle plate (2), the right support side plate (3) and the left support side plate (4) are all fixedly connected with hinge plates (5), and the hinge plates (5) are hinged to the guard plate hinge seat (101).

3. The protective device for a tunnel shield trolley according to claim 2, characterized in that, The support assembly is provided between the support middle plate (2), the right support side plate (3) and the left support side plate (4) and the shield gantry (1). The support assembly includes a support cylinder (6) and a first slide (8) hinged to the piston end of the support cylinder (6).

4. The protective device for a tunnel shield trolley according to claim 3, characterized in that, The inner sides of the support plate (2), right support side plate (3) and left support side plate (4) are all provided with a first sliding groove (7) in the horizontal direction. The first sliding seat (8) is slidably disposed in the first sliding groove (7). The tail end of the support cylinder (6) is hinged to the cylinder hinge seat (102).

5. The protective device for a tunnel shield trolley according to claim 1, characterized in that, The middle support plate (2), the right support side plate (3) and the left support side plate (4) are all arc-shaped structures. The width of the middle support plate (2) is greater than the distance between the upper ends of the right support side plate (3) and the left support side plate (4).

6. The protective device for a tunnel shield trolley according to claim 1, characterized in that, The gantry column (13) is provided with a side hinge seat (14) and a side cylinder hinge seat (15). The rear end of the side door panel (9) is fixedly connected with an ear plate, which is hinged to the side hinge seat (14). The inner side of the side door panel (9) is provided with a second sliding groove (10).

7. A protective device for a tunnel shield trolley according to claim 6, characterized in that, The push-pull assembly includes a side-pull cylinder (12) and a second slide (11) hinged to the piston end of the side-pull cylinder (12). The second slide (11) is slidably disposed in the second slide groove (10). The tail end of the side-pull cylinder (12) is hinged to the side cylinder hinge seat (15).

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