Tunneling roadway sliding type temporary supporting device

Abstract

The utility model relates to the technical field of coal mining, and discloses an excavation roadway sliding type temporary supporting device which comprises a lifting assembly, a cross beam, a longitudinal beam, an overturning beam and the like which are divided into a group A and a group B. The whole device is formed by nesting and combining the group A device and the group B device. Each lifting assembly comprises a supporting oil cylinder, a first-stage guide column, a second-stage guide column and a third-stage guide column are arranged on the two sides of the supporting oil cylinder respectively, the top ends of the supporting oil cylinder and the first-stage guide column are fixedly connected with cross beams, the bottom ends of the supporting oil cylinder and the first-stage guide column are connected with a base, and the two ends of a frame moving oil cylinder are connected with a cross beam B1 and a cross beam A2 respectively. The front end of the longitudinal beam is provided with an overturning beam used for assisting in laying a metal net. According to the supporting device, the moving and supporting requirements of the supporting device are met, the requirement for large supporting height change under different working conditions can be better met through double stretching and retracting, the guiding requirements for three-section guiding and multi-direction adjusting can be met, and the stability of equipment and the working accuracy are guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of coal mining, in particular to a sliding temporary support device for a tunneling tunnel. Background Art

[0002] In the mining process of mineral resources, the stability of the mine tunnel plays a vital role in the safety and efficiency of the entire mining operation. With the continuous increase in the depth of underground mining and the gradual expansion of mining scale, the geological conditions faced by the mine tunnel are becoming more and more complex, and the requirements for its support technology and related support devices are also increasing. Under the influence of mining activities, the stress distribution of the rock layer around the mine tunnel changes, and the rock will deform, crack, and even collapse. These unstable factors will not only threaten the normal operation of mining equipment, causing equipment damage and operation stagnation, but also pose a serious potential threat to the life safety of miners. For this reason, it is necessary to support the mine tunnel and protect the mining equipment. A mobile mine support device has emerged.

[0003] The support pillars of some tunneling roadway support devices today are not double-telescopic, but only have a single telescopic function. This makes it difficult to accurately adjust to the appropriate support height when dealing with complex working conditions with large changes in the height of the mine roof, and it is impossible to always maintain effective and stable support for the roof. At the same time, its guiding mechanism is not three-section, but adopts a simpler single-section or double-section structure. When the mine ground is uneven or the support device needs to be adjusted at multiple angles and directions, it cannot provide sufficiently flexible and accurate guiding. As a result, the support device is prone to offset and shaking during movement, which seriously affects the stability and safety of the mine support operation and reduces the overall efficiency of the mining operation. Therefore, a sliding temporary support device for tunneling roadway is proposed to solve the above problems. Utility Model Content

[0004] In order to make up for the above deficiencies, the utility model provides a sliding temporary support device for an excavation tunnel, aiming to improve the problems in the prior art that the pillars of the support device are not double-telescopic and the guide mechanism is not three-section.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A temporary sliding support device for an excavation tunnel includes a lifting assembly, a crossbeam, a longitudinal beam, a flip beam, etc. The above components are divided into Group A and Group B, and the entire device is a nested combination of Group A and Group B. Each lifting assembly includes a supporting oil cylinder, and a first-level guide column, a second-level guide column, and a third-level guide column are provided on both sides of the supporting oil cylinder. The tops of the supporting oil cylinder and the first-level guide column are fixedly connected to the crossbeam, and the bottoms are connected to the base. The two ends of the shifting oil cylinder are respectively connected to the B1 crossbeam and the A2 crossbeam. The front end of the longitudinal beam is provided with a flip beam for assisting in laying a metal mesh. The flip beam is connected to the longitudinal beam via a pin shaft, and the flip cylinder is used to realize the lifting and lowering of the flip beam. A strong magnet is provided at the front of the flip beam to absorb the metal mesh to prevent it from slipping during the laying process.

[0007] As a further description of the above technical solution:

[0008] The interiors of the multiple lifting assemblies each include four secondary guide columns, the interiors of the four secondary guide columns are fixedly connected to support cylinders, the exteriors of the four secondary guide columns are slidably connected to primary guide columns, the interiors of the four secondary guide columns are slidably connected to tertiary guide columns, the tops of the four lifting assemblies are respectively fixedly connected to beams A1, B1, A2 and B2, the bottoms of the four lifting assemblies are respectively fixedly connected to bases A1, B1, A2 and B2, the front end of the beam A1 is provided with an auxiliary component for assisting in laying a metal mesh, and a moving component for sliding is provided on the side of the beam B1 close to the beam A2;

[0009] As a further description of the above technical solution:

[0010] The front end of the crossbeam A2 is rotatably connected to a frame shifting cylinder, the driving end of the frame shifting cylinder is rotatably connected to the rear end of the crossbeam B1, and both sides of the crossbeam A1, the crossbeam B1, the crossbeam A2 and the crossbeam B2 are fixedly connected to side thrust cylinders, and the external couplings of the plurality of side thrust cylinders are connected to the inner wall of the roadway;

[0011] As a further description of the above technical solution:

[0012] The driving ends of the plurality of support oil cylinders are respectively fixedly connected to the interior of the first-level guide column and the top of the base A2, and a control valve is fixedly connected to one side of the crossbeam B2;

[0013] As a further description of the above technical solution:

[0014] The moving assembly includes two frame-moving cylinders, the rear ends of the two frame-moving cylinders are rotatably connected to the front end of the beam A2, and the front ends of the two frame-moving cylinders are rotatably connected to the rear end of the beam B1;

[0015] As a further description of the above technical solution:

[0016] Both ends of the beam A1 and the beam B1 are fixedly connected with a control valve, and both ends of the beam A2 and the beam B2 are fixedly connected with a control valve;

[0017] As a further description of the above technical solution:

[0018] The top ends of the cross beams A1 and A2 are fixedly connected to longitudinal beams A1, A2, A3 and A4 respectively, and the top ends of the cross beams B1 and B2 are fixedly connected to longitudinal beams B1, B2, B3 and B4 respectively;

[0019] As a further description of the above technical solution:

[0020] The auxiliary assembly includes a plurality of flip beams, the rear ends of which are rotatably connected to the front ends of the longitudinal beams A1, B1, A2, B2, B3, A3, B4 and A4, and the front end of the transverse beam A1 is rotatably connected to a plurality of flip cylinders;

[0021] As a further description of the above technical solution:

[0022] The driving ends of the plurality of turning cylinders are respectively rotatably connected to the bottom ends of the plurality of turning beams, and the interiors of the plurality of turning beams are all fixedly connected with strong magnets.

[0023] The utility model has the following beneficial effects:

[0024] 1. In the utility model, the sliding connection between the first-level guide column, the second-level guide column, the third-level guide column and the B-beam and the A-beam is achieved through the sliding connection of the support cylinder, thereby ensuring the movement and support requirements of the support device. The double telescopic structure can better adapt to the requirements of large changes in support height under different working conditions. The three-section guide can meet the guide requirements of multi-directional adjustment, ensuring the stability of the equipment and the accuracy of work.

[0025] 2. In the present invention, a specific driving device is provided on the flip beam, which can accurately control the rotation angle and position of the flip beam so that it can fit the top plate in a controllable manner. During the fitting process of the top plate, the flip beam can be flexibly adjusted according to the actual shape and surface condition of the top plate to ensure close contact with the top plate, thereby facilitating the installation of the metal mesh on the top plate. The operator can easily lay the metal mesh on the top plate along the tightly fitting flip beam, which greatly improves the convenience and accuracy of the metal mesh installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1This is a three-dimensional schematic diagram of a sliding temporary support device for a tunneling tunnel proposed by the utility model;

[0027] Figure 2 This is a schematic structural diagram of the front crossbeam of a sliding temporary support device for a tunneling tunnel proposed by the present invention;

[0028] Figure 3 The utility model provides a schematic structural diagram of a side push jack of a sliding temporary support device for a tunneling tunnel.

[0029] Legend:

[0030] 1. Base A1; 2. Base B1; 3. Base A2; 4. Base B2; 5. Lifting assembly; 6. Three-stage guide column; 7. Support cylinder; 8. Two-stage guide column; 9. One-stage guide column; 10. Frame shifting cylinder; 11. Crossbeam A1; 12. Crossbeam B1; 13. Crossbeam A2; 14. Crossbeam B2; 15. Longitudinal beam A1; 16. Longitudinal beam B1; 17. Longitudinal beam A2; 18. Longitudinal beam B2; 19. Longitudinal beam B3; 20. Longitudinal beam A3; 21. Longitudinal beam B4; 22. Longitudinal beam A4; 23. Control valve; 24. Side thrust cylinder; 25. Inner wall of tunnel; 26. Flip cylinder; 27. Flip beam; 28. Strong magnet. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0032] Reference Figures 1 to 3 The present invention provides an embodiment of a sliding temporary support device for an excavation tunnel, comprising four lifting assemblies 5. These four lifting assemblies 5 are key parts for achieving height adjustment and stable support of the entire device. They work together to flexibly adjust the overall posture of the device according to the different roof heights and ground conditions inside the mine, ensuring reliable support for all parts of the tunnel. The interior of the multiple lifting assemblies 5 includes four secondary guide columns 8. The secondary guide columns 8 are made of high-strength alloy steel. This material gives the secondary guide columns 8 excellent compressive strength and structural stability, making it less likely to deform or be damaged when subjected to forces transmitted from the upper roof and the lower base. It can firmly play a guiding role inside the device and provide accurate path guidance for the sliding and extension of other related components.

[0033] The interior of the four secondary guide columns 8 is fixedly connected to the support cylinder 7. The support cylinder 7 adopts a hydraulic system with high-precision sealing technology. The key components such as the internal piston and cylinder body are strictly quality tested and manufactured with fine processing technology to ensure that the hydraulic oil will not leak, thereby ensuring the stability and reliability of its drive, providing strong and stable power support for the lifting and lowering action of the entire device, and is the core driving component for realizing the mutual sliding adjustment between the secondary guide column 8, the primary guide column 9 and the tertiary guide column 6. The exterior of the four secondary guide columns 8 is slidably connected to the primary guide column 9. The primary guide column 9 is made of high-quality wear-resistant metal material. This material property can effectively reduce the wear between the secondary guide column 8 and the secondary guide column 8 during frequent sliding, ensuring that the sliding connection between them is always smooth and unobstructed, so that the primary guide column 9 can move up and down accurately on the outside of the secondary guide column 8, thereby driving the connected beams and other components to achieve height adjustment to meet the needs of the height change of the mine roof.

[0034] The four secondary guide columns 8 are all slidably connected to the tertiary guide column 6 inside. The tertiary guide column 6 is also made of a metal material with good toughness and strength. It can flexibly telescope and slide inside the secondary guide column 8, and cooperate with the primary guide column 9 to further expand the height adjustment range of the entire lifting assembly 5, better cope with the complex and changeable mine environment, and ensure that the device can achieve stable support regardless of the height of the roof conditions.

[0035] The top ends of the four lifting assemblies 5 are fixedly connected with beams A-11, B-12, A-13 and B-14 respectively. Beams A-11, B-12, A-13 and B-14 are all made of high-strength I-steel. Their structure is solid and can effectively transmit force, evenly distributing the force borne by the lifting assembly 5 to each connection part, providing a stable support foundation for subsequent connected longitudinal beams and other components, ensuring that when the entire device supports the top plate, the force can be smoothly transmitted between the components to avoid excessive local force affecting the overall stability.

[0036] The bottom ends of the four lifting components 5 are fixedly connected to the base A-1, the base B-2, the base A-3 and the base B-4 respectively. The base A-1, the base B-2, the base A-3 and the base B-4 are made of solid and heavy metal plates. They have a large contact area with the ground, and the bottom has been specially anti-slip treated, which can provide a stable and reliable support point on the bottom of the mine, preventing the device from sliding or shifting due to uneven ground or external force during the support process, thereby ensuring that the entire temporary support device stands firmly in the mine.

[0037] The front end of beam A-11 is equipped with an auxiliary component for assisting in the installation of metal mesh. This component allows for quick and easy installation of metal mesh on the roof, enhancing the overall support of the roof, further improving the safety of the mine, and creating a safer and more stable environment for subsequent mining operations. Beam B-12 and beam A-13 are adjacent to each other, equipped with a sliding movable component. This movable component is the key structure for enabling the alternating advance of the device within the tunnel, ensuring that the entire support device can move in an orderly manner with the propulsion of the mining machine, continuously providing effective support for the mine, and avoiding the impact of the device's immobility on mining progress and the risk of mine collapse caused by gaps in support areas.

[0038] The front end of beam A213 is rotatably connected to the frame shifting cylinder 10, and the driving end of the frame shifting cylinder 10 is rotatably connected to the rear end of beam B12. The internal structure of the frame shifting cylinder 10 is excellent, and it adopts high-quality seals and wear-resistant piston materials to ensure its sealing and smooth movement during frequent telescopic movements. Through its telescopic effect, it can provide pulling force or thrust between beam B12 and beam A213, thereby realizing the forward and backward movement of the device, which is the direct power source for the device to achieve alternating forward movement.

[0039] Both sides of beam A-11, beam B-12, beam A-13 and beam B-14 are fixedly connected with side thrust cylinders 24. The side thrust cylinders 24 are made of high-strength metal materials and have strong thrust capacity. They can apply appropriate thrust to the inner wall 25 of the tunnel so that the device can fit tightly inside the tunnel, effectively supporting the side wall of the tunnel and preventing the side wall from collapsing, providing all-round support and protection for the entire mine, further improving the overall stability of the mine, and ensuring that mining operations are carried out in a safe environment.

[0040] The external coupling of multiple side thrust cylinders 24 is connected to the inner wall 25 of the tunnel. Through this tight coupling connection, the force applied by the side thrust cylinders 24 can be effectively transmitted to the inner wall 25 of the tunnel, achieving stable support for the side wall, so that the device and the tunnel form a whole, jointly resisting the pressure from the surrounding rock layer, and ensuring the safety and stability of the surrounding environment during mining. The driving ends of multiple support cylinders 7 are respectively fixedly connected to the inside of the first-level guide column 9 and the top of the base A23. This connection method enables the support cylinder 7 to directly drive the first-level guide column 9 to perform lifting and lowering movements, and also plays an auxiliary support and adjustment role for the base A23 part, thereby achieving the height change of the entire device in the vertical direction and the support and separation operations of the top plate and the ground, ensuring that the device can flexibly adjust the support state according to actual needs.

[0041] A control valve 23 is fixedly connected to one side of the beam B2 14. The control valve 23 adopts advanced electronic control technology and has precise flow regulation and pressure control functions. The operator can use the control valve 23 to conveniently and quickly control the movement of each cylinder, ensuring that the entire temporary support device operates in a predetermined manner, thereby improving the convenience of device operation and overall work efficiency.

[0042] The moving assembly includes two frame-moving cylinders 10, the rear ends of the two frame-moving cylinders 10 are rotatably connected to the front end of the beam A2 13, and the front ends of the two frame-moving cylinders 10 are rotatably connected to the rear end of the beam B12. This double-frame-moving cylinder setting can provide a more balanced and stable pulling force or thrust, ensuring that the relative movement between the beam B12 and the beam A2 13 is smoother, avoiding the device from tilting or jamming due to uneven force on one side, and ensuring that the device can smoothly perform alternating forward movements in the alley.

[0043] Both ends of beam A-11 and beam B-12 are fixedly connected with control valves 23, and both ends of beam A-13 and beam B-14 are fixedly connected with control valves 23. The provision of control valves 23 in multiple locations makes it convenient for operators to control the device from different positions. No matter which side of the device is operated, the working status of each cylinder can be adjusted in time and accurately, which improves the flexibility and convenience of operation and further ensures the efficient and safe development of mining operations.

[0044] The tops of crossbeam A11 and crossbeam A213 are fixedly connected with longitudinal beam A15, longitudinal beam A217, longitudinal beam A320 and longitudinal beam A422 respectively. The tops of crossbeam B12 and crossbeam B214 are fixedly connected with longitudinal beam B16, longitudinal beam B218, longitudinal beam B319 and longitudinal beam B421 respectively. Longitudinal beam A15, longitudinal beam A217, longitudinal beam A320, longitudinal beam A422, longitudinal beam B16, longitudinal beam B218, longitudinal beam B319 and longitudinal beam B421 are all made of thick steel plates. The surface of the steel plates has been specially treated and has good anti-slip properties. It can better contact with the roof and provide stable supporting force. When supporting the roof, it can fit closely to the surface of the roof, effectively preventing the roof from local sinking or collapse, providing a safe working space for mining operations, and they cooperate with each other to expand the support coverage area of ​​the roof, further enhancing the overall support effect.

[0045] The auxiliary components include multiple flip beams 27, and the rear ends of the multiple flip beams 27 are rotatably connected to the front ends of longitudinal beams A-15, longitudinal beam B-16, longitudinal beam A-17, longitudinal beam B-18, longitudinal beam B-19, longitudinal beam A-20, longitudinal beam B-4 21 and longitudinal beam A-4 22. Through such a rotating connection method, the multiple flip beams 27 can flexibly adjust the angle according to actual needs, providing convenient conditions for subsequent metal mesh laying operations, enabling them to better adapt to different roof shapes and operation requirements, and ensuring the smooth progress of metal mesh laying work.

[0046] The front end of the beam A-11 is rotatably connected to a plurality of flip cylinders 26, and the driving ends of the plurality of flip cylinders 26 are rotatably connected to the bottom ends of the plurality of flip beams 27. The plurality of flip cylinders 26 have good power output performance and can provide a stable driving force for the rotation of the flip beams 27, ensuring that the flip beams 27 can be adjusted to the corresponding angle according to the operator's intention, creating a suitable operating state for laying the metal mesh, and realizing efficient and accurate mesh laying operations.

[0047] Strong magnets 28 are fixedly connected to the interior of multiple flip beams 27. As a key structural component inside the flip beam 27, the strong magnets 28 are made of strong and durable materials. They can enhance the overall structural strength of the flip beam 27, so that it will not be easily deformed or damaged when carrying the metal mesh and performing related operations, ensuring the reliability and stability of the auxiliary components during the entire mesh laying process, thereby successfully completing the task of adding metal mesh to the top plate, improving the supporting force of the top plate, and protecting the mining operation.

[0048] Working Principle: When mining equipment is in use, tunnels form within the mine. Without support, the tunnel could collapse, jeopardizing the safety of the equipment and personnel. In this case, a temporary support device can be placed inside the tunnel. The mining machine then mines at the bottom of the temporary support device. As the mining machine advances, the temporary support device first retracts the four side thrust cylinders 24 of Group A, freeing them from the inner wall support. The four lifting assemblies 5 of Group A are activated, and the hydraulic cylinders retract, allowing the second and third level guide posts 6 to slide inside the first level guide posts 9. This releases the lifting assemblies 5 of Group A from contact with the ground, and the longitudinal beams of Group A from contact with the roof. Group A is then pushed forward. The side thrusters of Group A are then extended, bracing the tunnel inner wall 25. The four lifting assemblies 5 of Group A are activated, and the hydraulic cylinders extend, bracing the roof and floor plates. The same steps are followed for Group B, freeing them from the tunnel inner wall 25. The shifting cylinders 10 connected to crossbeams B-12 and A-2 13 pull Group B forward, achieving alternating forward movement. By performing reciprocating operations at this point, the temporary support device can support the mining machine as it moves, reducing the probability of mine collapse during mining and ensuring the safety of personnel and machines.

[0049] After the support device moves, the flip cylinder 26 can be started to make the flip beam 27 fall, and a metal mesh can be laid on the flip beam 27. The flip cylinder 26 is operated to make the flip beam 27 rise, pressing the metal mesh to the top plate, which is convenient for anchor rods and anchor cables. A strong magnet is set at the front of the flip beam 27 to prevent the metal mesh from slipping during the laying process, and the metal mesh can be easily added to the top plate, which improves the supporting force of the top plate to a certain extent, improves safety, and can also prevent the mountain from vibrating during mining operations, thereby preventing soil from falling and affecting operations and construction.

[0050] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A temporary sliding support device for a tunneling tunnel, comprising four lifting assemblies (5), characterized in that: The interior of the plurality of lifting assemblies (5) includes four secondary guide columns (8), the interior of the four secondary guide columns (8) is fixedly connected to a supporting oil cylinder (7), the exterior of the four secondary guide columns (8) is slidably connected to a primary guide column (9), the interior of the four secondary guide columns (8) is slidably connected to a tertiary guide column (6), the top ends of the four lifting assemblies (5) are respectively fixedly connected to a beam A1 (11), a beam B1 (12), a beam A2 (13) and a beam B2 (14), the bottom ends of the four lifting assemblies (5) are respectively fixedly connected to a base A1 (1), a base B1 (2), a base A2 (3) and a base B2 (4), the front end of the beam A1 (11) is provided with an auxiliary component for assisting in laying a metal mesh, and a moving component for sliding is provided on the adjacent side of the beam B1 (12) and the beam A2 (13).

2. The sliding temporary support device for a tunneling tunnel according to claim 1, characterized in that: The front end of the beam A2 (13) is rotatably connected to a frame shifting cylinder (10), and the driving end of the frame shifting cylinder (10) is rotatably connected to the rear end of the beam B1 (12). Both sides of the beam A1 (11), the beam B1 (12), the beam A2 (13) and the beam B2 (14) are fixedly connected to side thrust cylinders (24), and the external couplings of the plurality of side thrust cylinders (24) are connected to the inner wall of the tunnel (25).

3. The sliding temporary support device for a tunneling tunnel according to claim 2, characterized in that: The driving ends of the plurality of supporting oil cylinders (7) are respectively fixedly connected to the interior of the first-level guide column (9) and the top end of the base A2 (3), and a control valve (23) is fixedly connected to one side of the crossbeam B2 (14).

4. The sliding temporary support device for a tunneling tunnel according to claim 3, characterized in that: The moving assembly includes two frame-moving cylinders (10), the rear ends of the two frame-moving cylinders (10) are rotatably connected to the front end of the beam A2 (13), and the front ends of the two frame-moving cylinders (10) are rotatably connected to the rear end of the beam B1 (12).

5. The sliding temporary support device for a tunneling tunnel according to claim 1, characterized in that: Both ends of the crossbeam A1 (11) and the crossbeam B1 (12) are fixedly connected to a control valve (23), and both ends of the crossbeam A2 (13) and the crossbeam B2 (14) are fixedly connected to a control valve (23).

6. The sliding temporary support device for a tunneling tunnel according to claim 1, characterized in that: The top ends of the cross beam A1 (11) and the cross beam A2 (13) are respectively fixedly connected with the longitudinal beam A1 (15), the longitudinal beam A2 (17), the longitudinal beam A3 (20) and the longitudinal beam A4 (22); the top ends of the cross beam B1 (12) and the cross beam B2 (14) are respectively fixedly connected with the longitudinal beam B1 (16), the longitudinal beam B2 (18), the longitudinal beam B3 (19) and the longitudinal beam B4 (21).

7. The sliding temporary support device for a tunneling tunnel according to claim 6, characterized in that: The auxiliary component includes a plurality of flip beams (27), the rear ends of the plurality of flip beams (27) are rotatably connected to the front ends of the longitudinal beam A1 (15), the longitudinal beam B1 (16), the longitudinal beam A2 (17), the longitudinal beam B2 (18), the longitudinal beam B3 (19), the longitudinal beam A3 (20), the longitudinal beam B4 (21) and the longitudinal beam A4 (22), and the front end of the cross beam A1 (11) is rotatably connected to a plurality of flip cylinders (26).

8. The sliding temporary support device for a tunneling tunnel according to claim 7, characterized in that: The driving ends of the plurality of turning oil cylinders (26) are rotatably connected to the bottom ends of the plurality of turning beams (27), and the interiors of the plurality of turning beams (27) are fixedly connected with strong magnets (28).

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