Counter-force frame of shield tunneling machine

Abstract

The utility model discloses a shield tunneling machine reaction frame which comprises a tunnel main body structure, a buffer frame is fixedly installed in the tunnel main body structure, a plurality of fixing grooves are formed in one side of the buffer frame, and limiting grooves which are symmetrically distributed are formed in the inner walls of the fixing grooves. According to the reaction frame of the shield tunneling machine, the tunnel main body structure, the base frame, the reference ring, the buffer frame, the buffer rod, the stress piece, the limiting block, the fixing groove, the limiting groove and the spring are used in cooperation, impact force can be effectively absorbed and dispersed through elastic deformation of the spring when the reaction frame is subjected to large impact, the effect of the impact force on the reaction frame is effectively reduced, and the service life of the reaction frame is prolonged. In order to prevent severe damage and even breakage of the whole structure, specifically, the installation position of the spring can be selected according to design requirements, and the spring is usually installed at a key node of the reaction frame. When external force acts on the counter-force frame, the spring can contract or stretch to absorb and store energy.

Description

Technical Field

[0001] The utility model relates to the technical field of shield machines, in particular to a reaction frame of a shield machine. Background Art

[0002] The shield machine is a special engineering machine for tunneling. It has the functions of excavating and cutting soil, transporting soil and ballast, assembling tunnel lining, measuring and guiding deviation correction, etc. It has been widely used in tunnel projects such as subways, railways, highways, municipal engineering, and hydropower. Before the shield machine starts, it is necessary to install equipment that can offset the huge thrust of the shield machine. This equipment is called the shield machine reaction frame.

[0003] The Chinese patent publication number is CN219711520U. The patent discloses a shield machine reaction frame, which includes a base frame, the base frame includes a pair of parallel columns and a pair of parallel beams, the columns and the beams are vertically connected to each other to form a square frame structure; the columns include a plurality of column segments, and the plurality of column segments are detachably connected. The utility model realizes structural optimization of the shield machine reaction frame, making it easy to assemble and disassemble, thereby improving the shield machine tunnel starting efficiency.

[0004] With respect to the above-mentioned related technologies, the reaction frame has some shortcomings. In actual use, it does not have a buffer structure. If the reaction frame is subjected to a large impact, in the absence of a buffer structure, the reaction frame may not be able to withstand the impact force, resulting in more serious damage and even leading to the rupture of the entire structure. Therefore, it is necessary to provide a shield machine reaction frame to solve the above-mentioned technical problems. Utility Model Content

[0005] The utility model aims to provide a reaction frame for a shield machine to solve at least one technical problem existing in the above-mentioned background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A shield machine reaction frame, comprising:

[0008] A tunnel main structure, wherein a buffer frame is fixedly installed inside the tunnel main structure, a plurality of fixed grooves are opened on one side of the buffer frame, symmetrically distributed limit grooves are opened on the inner wall of the fixed groove, limit blocks are slidably installed on two of the limit grooves, a buffer rod is fixedly installed between the two limit blocks, and the buffer rod is slidably connected to the fixed groove, a spring is fixedly installed between one end of the buffer rod located inside the fixed groove and one side of the inner wall of the fixed groove, a force-bearing piece is arranged at one end of the buffer rod, a base frame is arranged on one side of the force-bearing piece, and a reference ring is fixedly installed on one side of the base frame.

[0009] Preferably, the buffer frame includes several buffer segments, both ends of the buffer segments are welded with connecting flanges, and adjacent connecting flanges are fixedly connected by bolts, the force-bearing member includes several force-bearing plates, one end of the buffer rod is provided with a threaded groove, one side of the force-bearing member is provided with threaded holes corresponding to the position and number of the buffer rod, the base frame is provided with threaded grooves corresponding to the position and number of the buffer rod, the base frame is threadedly connected with fastening bolts through fixing holes, and the fastening bolts are threadedly connected to the corresponding threaded holes and threaded grooves.

[0010] Preferably, a plurality of groups of symmetrically distributed support members are fixedly installed on the other side of the buffer frame by means of bolts, and one end of the support member away from the buffer frame is fixedly connected to the inner wall of the tunnel main structure by means of bolts.

[0011] Preferably, the support member is composed of multiple sections of support rods, and the support rods are detachably connected to each other.

[0012] Preferably, the buffer section is composed of a plurality of column sections and right-angle sections.

[0013] Preferably, the load-bearing plate is composed of a plurality of straight plates and right-angle plates.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. The utility model uses the tunnel main structure, base frame, reference ring, buffer frame, buffer rod, force-bearing member, limit block, fixed groove, limit groove and spring in coordination. Through the elastic deformation of the spring, when the reaction frame is subjected to a large impact, it can effectively absorb and disperse the impact force, effectively reduce the effect of the impact force on the reaction frame, so as to prevent it from being seriously damaged or even the entire structure from rupture. Specifically, the installation position of the spring can be selected according to the design requirements, and it is usually installed at the key node of the reaction frame. When an external force acts on the reaction frame, the spring will contract or stretch, absorb and store energy, thereby reducing the impact intensity of the impact force. After the impact force weakens, the spring will return to its original state, releasing the stored energy, so that the reaction frame can return to its original position and shape.

[0016] 2. The utility model adopts the coordinated use of connecting flanges, buffer sections, threaded grooves, threaded holes, fixing holes, fastening bolts and load-bearing plates. The reaction frame buffer structure is composed of multi-section splicing, which can not only simplify the assembly and disassembly operations during the construction process, but also reduce construction time and labor costs, as well as the matching and disassembly method between structures, thereby further improving the utilization efficiency of the shield machine reaction frame.

[0017] 3. The utility model uses a supporting member and a supporting rod in coordination, and a diagonal bracing structure formed by the supporting member on the right side of the reaction frame is detachably fixedly connected to the top and bottom of the inner wall of the tunnel main structure, so that when the reaction frame is subjected to the reaction force of the shield machine, the reaction frame can better disperse the reaction force on the tunnel main structure, thereby ensuring that the reaction frame can withstand a sufficiently large reaction force of the shield machine. At the same time, the supporting member adopts a multi-section supporting rod assembly structure, which is easy to disassemble and transport, thereby improving people's convenience in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the utility model.

[0019] Figure 2 It is a structural schematic diagram of the buffer frame in the utility model.

[0020] Figure 3 It is a structural schematic diagram of the force-bearing member in the utility model.

[0021] Figure 4 It is a schematic diagram of the partial connection structure of the base frame, the force-bearing member and the buffer rod in the utility model.

[0022] Figure 5 For the utility model Figure 1 Enlarged structural diagram at A in the middle.

[0023] In the figure: 1. Tunnel main structure; 2. Base frame; 3. Reference ring; 4. Buffer frame; 5. Buffer rod; 6. Load-bearing member; 7. Support member; 8. Support rod; 9. Connecting flange; 10. Buffer section; 11. Threaded groove; 12. Threaded hole; 13. Fixing hole; 14. Fastening bolt; 15. Load-bearing plate; 16. Limit block; 17. Fixing groove; 18. Limit groove; 19. Spring. DETAILED DESCRIPTION

[0024] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0025] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0026] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] See also Figure 1-5 , an embodiment provided by the utility model:

[0029] A shield machine reaction frame, comprising:

[0030] A tunnel main structure 1, a buffer frame 4 is fixedly installed inside the tunnel main structure 1, a plurality of fixed grooves 17 are opened on one side of the buffer frame 4, and symmetrically distributed limit grooves 18 are opened on the inner wall of the fixed groove 17, and limit blocks 16 are slidably installed on the two limit grooves 18, a buffer rod 5 is fixedly installed between the two limit blocks 16, and the buffer rod 5 is slidably connected to the fixed groove 17, a spring 19 is fixedly installed between one end of the buffer rod 5 located inside the fixed groove 17 and one side of the inner wall of the fixed groove 17, a force-bearing member 6 is arranged at one end of the buffer rod 5, a base frame 2 is arranged on one side of the force-bearing member 6, and a reference ring 3 is fixedly installed on one side of the base frame 2.

[0031] The buffer frame 4 includes several buffer segments 10, both ends of the buffer segments 10 are welded with connecting flanges 9, and adjacent connecting flanges 9 are fixedly connected by bolts, the force-bearing member 6 includes several force-bearing plates 15, one end of the buffer rod 5 is provided with a threaded groove 11, one side of the force-bearing member 6 is provided with a threaded hole 12 corresponding to the position and quantity of the buffer rod 5, the base frame 2 is provided with a threaded groove 11 corresponding to the position and quantity of the buffer rod 5, the base frame 2 is threadedly connected with a fastening bolt 14 through a fixing hole 13, and the fastening bolt 14 is threadedly connected to the corresponding threaded hole 12 and threaded groove 11. The reaction frame adopts a multi-section splicing composition and a matching disassembly method. This reaction frame can not only simplify the assembly and disassembly operations during the construction process, but also reduce construction time and labor costs. In addition, when the reaction frame needs to be moved or reorganized, the required components can be quickly disassembled and reassembled to improve construction progress and flexibility.

[0032] In one of the embodiments, a plurality of groups of symmetrically distributed support members 7 are fixedly installed on the other side of the buffer frame 4 by bolts, and the end of the support member 7 away from the buffer frame 4 is fixedly connected to the inner wall of the tunnel main structure 1 by bolts. The reaction frame can better disperse the reaction force on the tunnel main structure 1, thereby ensuring that the reaction frame can withstand a sufficiently large reaction force of the shield machine.

[0033] In one of the preferred embodiments, the support member 7 is composed of multiple sections of support rods 8, and the multiple support rods 8 are detachably connected to facilitate disassembly, assembly and transportation, thereby improving the convenience of use for people.

[0034] In one embodiment, the buffer section 10 is composed of a plurality of column sections and right-angle sections, which facilitates the formation of the buffer frame 4 into a U-shaped structure, so that the buffer frame can effectively disperse and buffer the impact force when it is impacted, providing better protection and support. This design can greatly reduce the impact of the impact force on the reaction frame, and improve the durability and service life of the reaction frame.

[0035] In one preferred embodiment, the load-bearing plate 15 is composed of a plurality of straight plates and right-angle plates, so as to facilitate the assembly of the load-bearing member 6 into a U-shaped structure.

[0036] The working principle of the utility model is as follows: the specific structure of the base frame 2 and the reference ring 3 can refer to the existing technology, which can be easily realized by those skilled in the art. At the same time, the contents not described in detail in this specification belong to the existing technology known to those skilled in the art. During the operation of the shield machine, the reaction force of the shield machine directly acts on the reference ring 3, and the reference ring 3 provides a reaction force for the shield machine to start in the tunnel. The reaction force of the shield machine directly acts on the force-bearing member 6 through the reference ring 3 and the base frame 2. The force-bearing member 6 drives the buffer rod 5 to slide inside the fixed groove 17 and squeezes the spring 19. Through the elastic deformation of the spring 19, when the reaction frame is subjected to a large impact, the impact force can be effectively absorbed and dispersed, and the effect of the impact force on the reaction frame can be effectively reduced to prevent it from being seriously damaged or even the entire structure from rupture. Specifically, the installation position of the spring 19 can be selected according to the design requirements, and is usually installed at the key node of the reaction frame. When an external force acts on the reaction frame, the spring will contract or stretch, absorb and store energy, thereby reducing the impact strength of the impact force. After the impact force subsides, the spring returns to its original shape, releasing the stored energy and allowing the reaction frame to return to its original position and shape.

[0037] During the use of the reaction frame, the buffer frame 4 is connected by a plurality of buffer segments 10 through the cooperation of the connecting flange 9 on the port and the bolts. Therefore, the buffer frame 4 is assembled from multiple buffer segments 10. At the same time, the force-bearing member 6 is composed of multiple force-bearing plates 15. When installing the force-bearing plate 15, the force-bearing member 6 is first accurately positioned between the base frame 2 and the buffer rod 5, and then the fastening bolts 14 are screwed into the fixing holes 13, threaded holes 12 and threaded grooves 11 in sequence to complete the assembly of the force-bearing member 6. The assembly method of the force-bearing member 6 is to directly fix the force-bearing member 6 when the base frame 2 and the buffer rod 5 are fixed by the fastening bolts 14. Therefore, the reaction frame buffer structure is composed of multiple-section splicing, which can not only simplify the assembly and disassembly operations during the construction process, but also reduce the construction time and labor costs, as well as the matching and disassembly method between structures, further improving the use efficiency of the shield machine reaction frame.

[0038] During the installation of the reaction frame, a diagonal bracing structure formed on the right side of the reaction frame by the support member 7 is detachably fixedly connected to the top and bottom of the inner wall of the tunnel main structure 1, so that when the reaction frame is subjected to the reaction force of the shield machine, the reaction frame can better disperse the reaction force on the tunnel main structure 1, thereby ensuring that the reaction frame can withstand a sufficiently large reaction force of the shield machine. At the same time, the support member 7 adopts a multi-section support rod 8 assembly structure, which is easy to disassemble and transport, thereby improving people's convenience in use.

[0039] The above is only an embodiment of the utility model, and the common sense such as the known specific structure and characteristics in the scheme is not described too much here. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and the utility model can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is limited by the attached claims rather than the above description, and it is intended to include all changes within the meaning and scope of the equivalent elements of the claims in the utility model. Any figure mark in the claims should not be regarded as limiting the claims involved.

Claims

1. A shield machine reaction frame, characterized in that: It includes: A tunnel main structure (1), wherein a buffer frame (4) is fixedly installed inside the tunnel main structure (1), a plurality of fixed grooves (17) are provided on one side of the buffer frame (4), symmetrically distributed limit grooves (18) are provided on the inner wall of the fixed groove (17), limit blocks (16) are slidably installed on two limit grooves (18), a buffer rod (5) is fixedly installed between the two limit blocks (16), and the buffer rod (5) is slidably connected to the fixed groove (17), a spring (19) is fixedly installed between one end of the buffer rod (5) located inside the fixed groove (17) and one side of the inner wall of the fixed groove (17), a force-bearing member (6) is provided at one end of the buffer rod (5), a base frame (2) is provided on one side of the force-bearing member (6), and a reference ring (3) is fixedly installed on one side of the base frame (2).

2. A shield machine reaction frame according to claim 1, characterized in that: The buffer frame (4) comprises a plurality of buffer segments (10), both ends of the buffer segments (10) are welded with connecting flanges (9), and adjacent connecting flanges (9) are fixedly connected by bolts, the force-bearing member (6) comprises a plurality of force-bearing plates (15), one end of the buffer rod (5) is provided with a threaded groove (11), one side of the force-bearing member (6) is provided with a threaded hole (12) corresponding to the position and number of the buffer rod (5), the base frame (2) is provided with a threaded groove (11) corresponding to the position and number of the buffer rod (5), the base frame (2) is threadedly connected with a fastening bolt (14) through a fixing hole (13), and the fastening bolt (14) is threadedly connected to the corresponding threaded hole (12) and the threaded groove (11).

3. A shield machine reaction frame according to claim 1, characterized in that: A plurality of groups of symmetrically distributed support members (7) are fixedly mounted on the other side of the buffer frame (4) by means of bolts, and one end of the support member (7) away from the buffer frame (4) is fixedly connected to the inner wall of the tunnel main structure (1) by means of bolts.

4. A shield machine reaction frame according to claim 3, characterized in that: The support member (7) is composed of a plurality of support rods (8), and the plurality of support rods (8) are detachably connected.

5. A shield machine reaction frame according to claim 2, characterized in that: The buffer section (10) is composed of a plurality of column sections and right-angle sections.

6. A shield machine reaction frame according to claim 2, characterized in that: The load-bearing plate (15) is composed of a plurality of straight plates and right-angle plates.

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