Mobile reaction frame anti-reverse hydraulic device

Abstract

This utility model discloses a hydraulic anti-reverse device for a mobile reaction frame, belonging to the technical field of shield machine anti-reverse devices. It includes a fixed base welded to the bottom of the shield machine shell, with a hydraulic cylinder detachably installed inside the fixed base. The telescopic end of the hydraulic cylinder protrudes from the bottom surface of the fixed base, and a limit post is fixedly connected to the telescopic end of the hydraulic cylinder. A bracket is provided at the bottom of the fixed base, with several evenly distributed pin holes on the bracket. The limit post can be inserted into the pin holes. The fixed base of this utility model is welded to the bottom tail end of the shield machine shell and equipped with a hydraulic cylinder, which is inserted into the pin holes of the bottom bracket to provide a reaction force, preventing the shield machine from retreating during the translation process of the reaction frame, thus preventing disasters such as water and sand inrush, surface subsidence, and collapse.

Description

Technical Field

[0001] This utility model belongs to the technical field of shield machine anti-backward device, and more specifically, relates to a hydraulic device for anti-backward movement of a mobile reaction frame. Background Technology

[0002] Currently, as the tunnel boring machine (TBM) advances into the soil, the water pressure and soil pressure in the strata exert a reverse pressure on the TBM. Under normal circumstances, there is a reaction force provided by the reaction frame. However, when the reaction frame needs to be moved forward, it cannot provide a reaction force. Therefore, during the translation of the reaction frame, the TBM moves backward, leading to disasters such as water and sand inrush, surface subsidence and collapse. Utility Model Content

[0003] The main objective of this invention is to provide a hydraulic device for preventing the backward movement of a mobile reaction frame, so as to solve the problems mentioned above in the background.

[0004] According to a first aspect of the present invention, a hydraulic device for preventing the backlash of a mobile reaction frame is provided, comprising a fixed base welded to the bottom of a tunnel boring machine shell, wherein a hydraulic cylinder is detachably installed inside the fixed base, the telescopic end of the hydraulic cylinder is exposed on the bottom surface of the fixed base, a limit post is fixedly connected to the telescopic end of the hydraulic cylinder, a bracket is provided at the bottom of the fixed base, and a plurality of evenly distributed pin holes are provided on the bracket, wherein the limit post can be inserted into the pin holes.

[0005] In a specific embodiment of this utility model, the fixing base includes a top plate, a bottom plate, and two side plates. The top plate, bottom plate, and side plates are welded together to form a fixing frame. The width of the top plate is smaller than the width of the bottom plate. One side of each of the two side plates is provided with a first arc surface that cooperates with the shield machine shell.

[0006] In a specific embodiment of this utility model, the interior of the fixing base is welded with two vertically arranged first partitions, a horizontally arranged second partition, and a horizontally arranged third partition. The first, second, and third partitions divide the interior of the fixing base into nine regions. The second partition is arranged above the third partition, and the width of the second partition is smaller than the width of the third partition.

[0007] In a specific embodiment of this utility model, a U-shaped groove is provided on one side of the second partition, the third partition, and the bottom plate to facilitate the installation of the hydraulic cylinder.

[0008] In a specific embodiment of this utility model, each of the two first partitions has a second arc surface that mates with the shield machine shell on one side.

[0009] In a specific embodiment of this utility model, a fixing sleeve is provided on the outside of the hydraulic cylinder, and a plurality of fixing holes are provided on the top of the fixing sleeve. The hydraulic cylinder is fixedly connected to the fixing holes by bolts.

[0010] In a specific embodiment of this utility model, a plurality of assembly holes are provided at the bottom center of the fixing base, and a connecting hole that mates with the assembly holes is provided on the fixing sleeve.

[0011] In a specific embodiment of this utility model, a protective sleeve is provided between the fixing sleeve and the limiting post, the protective sleeve is provided with a plurality of first through holes, and the bottom of the fixing sleeve is provided with a second through hole that cooperates with the first through holes.

[0012] One of the above-described technical solutions of this utility model has at least one of the following advantages or beneficial effects:

[0013] The fixed base of this mobile reaction frame anti-reverse hydraulic device is welded to the bottom of the tail of the tunnel boring machine shell and is equipped with a hydraulic cylinder that is inserted into the pin hole of the bottom bracket to provide reaction force and prevent the tunnel boring machine from retreating during the translation process, which could lead to disasters such as water and sand inrush, surface subsidence and collapse. Attached Figure Description

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0015] Figure 1 This is a schematic diagram of the hydraulic device for preventing the backward movement of the moving reaction frame in one embodiment of this utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the fixed base and the hydraulic cylinder in one embodiment of this utility model;

[0017] Figure 3 This is a schematic diagram of the fixed base and hydraulic cylinder from another perspective in one embodiment of this utility model;

[0018] Figure 4 This is a cross-sectional view of the fixed base and the hydraulic cylinder in one embodiment of the present invention;

[0019] Figure 5 This is a schematic diagram of the structure of the fixing sleeve in one embodiment of the present invention. Detailed Implementation

[0020] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0021] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0022] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0023] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" and "second" may explicitly or implicitly include one or more features.

[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the term "connection" should be interpreted broadly. For example, it can be a fixed connection or a movable connection, a detachable connection or a non-detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection or a connection that can communicate with each other; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two elements, an indirect connection, or an interaction between two elements.

[0025] The following disclosure provides many different implementation methods or examples for different solutions to implement this utility model.

[0026] Reference Figures 1 to 5 As shown, a hydraulic device for preventing the backward movement of a mobile reaction frame is provided, including a fixed base 1 welded to the bottom of the shield machine shell. A hydraulic cylinder 2 is detachably installed inside the fixed base 1. The telescopic end of the hydraulic cylinder 2 is exposed on the bottom surface of the fixed base 1. A limit post 4 is fixedly connected to the telescopic end of the hydraulic cylinder 2. A bracket 3 is provided at the bottom of the fixed base 1. Several evenly distributed pin holes 31 are provided on the bracket 3. The limit post 4 can be inserted into the pin holes 31.

[0027] In this embodiment, when the tunnel boring machine (TBM) advances into the soil, the water pressure and soil pressure in the stratum will exert a reverse pressure on the TBM. Under normal circumstances, a reaction frame provides a reaction force. However, when the reaction frame needs to be moved forward, it cannot provide a reaction force. Therefore, the anti-reverse hydraulic device is welded to the bottom of the shield tail. The fixed seat 1 is welded to the bottom end of the tail of the TBM shell and a hydraulic cylinder 2 is installed. It is inserted into the pin hole 31 of the bottom bracket 3 to provide a reaction force and prevent the TBM from retreating during the translation process of the reaction frame, which could lead to disasters such as water and sand inrush, surface subsidence and collapse.

[0028] In one embodiment of this utility model, the fixing base 1 includes a top plate 11, a bottom plate 12, and two side plates 13. The top plate 11, the bottom plate 12, and the two side plates 13 are welded together to form a fixing frame. The width of the top plate 11 is smaller than the width of the bottom plate 12. One side of each of the two side plates 13 is provided with a first arc surface that cooperates with the shield machine shell. The shield machine shell is a cylindrical structure. The two side plates 13 are not only fixed by welding the top plate 11 and the bottom plate 12, but also have an inclined plate 20 welded to one end of the bottom plate 12. The inclined plate 20 is also welded to the two side plates 13 to strengthen the strength of the fixing base 1.

[0029] In one embodiment of this utility model, the interior of the fixing base 1 is welded with two vertically arranged first partitions 14, a horizontally arranged second partition 15, and a horizontally arranged third partition 16. The first partitions 14, 15, and 16 divide the interior of the fixing base 1 into nine regions. The second partition 15 is located above the third partition 16, and the width of the second partition 15 is smaller than the width of the third partition 16. Due to the first arc surface of the two side plates 13, the width of the second partition 15 located at the top is smaller than the width of the third partition 16. The lower the region of the nine regions, the larger the space.

[0030] Furthermore, the second partition 15, the third partition 16 and the bottom plate 12 are all provided with a U-shaped groove 10 on one side to facilitate the installation of the hydraulic cylinder 2. The U-shaped groove 10 facilitates the disassembly and installation of the hydraulic cylinder 2.

[0031] Furthermore, each of the two first partitions 14 has a second arc surface on one side that mates with the shield machine shell, and the two first partitions 14 have the same structural size as the two side plates 13.

[0032] In one embodiment of this utility model, a fixing sleeve 21 is provided on the outside of the hydraulic cylinder 2, and a plurality of fixing holes 212 are provided on the top of the fixing sleeve 21. The hydraulic cylinder 2 is fixedly connected to the fixing holes 212 by bolts to fix the position of the hydraulic cylinder 2.

[0033] Preferably, the bottom center of the fixed base 1 is provided with a plurality of assembly holes 17, and the fixed sleeve 21 is provided with a connecting hole 22 that mates with the assembly holes 17. The position of the fixed sleeve 21 is fixed, and then the hydraulic cylinder 2 is installed and fixed.

[0034] A protective sleeve 23 is provided between the fixing sleeve 21 and the limiting post 4. Several first through holes are provided on the protective sleeve 23. A second through hole that mates with the first through holes is provided at the bottom of the fixing sleeve 21. The first through holes and the second through holes are fixedly connected by bolts, thereby fixing the position of the protective sleeve 23.

[0035] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A mobile counterforce frame locking hydraulic device, comprising a fixed seat (1) welded on the bottom of a shield machine shell, characterized in that, A hydraulic cylinder (2) is detachably installed inside the fixed base (1). The telescopic end of the hydraulic cylinder (2) is exposed on the bottom surface of the fixed base (1). The telescopic end of the hydraulic cylinder (2) is fixedly connected to a limiting post (4). A bracket (3) is provided at the bottom of the fixed base (1). Several evenly distributed pin holes (31) are provided on the bracket (3). The limiting post (4) can be inserted into the pin holes (31).

2. The mobile counterforce frame locking hydraulic device according to claim 1, characterized in that, The fixed base (1) includes a top plate (11), a bottom plate (12), and two side plates (13). The top plate (11), bottom plate (12), and two side plates (13) are welded together to form a fixed frame. The width of the top plate (11) is smaller than the width of the bottom plate (12). One side of each of the two side plates (13) is provided with a first arc surface that cooperates with the shield machine shell.

3. The mobile counterforce frame locking hydraulic device according to claim 2, characterized in that, The interior of the fixing base (1) is welded with two vertically arranged first partitions (14), a horizontally arranged second partition (15), and a horizontally arranged third partition (16). The first partition (14), the second partition (15), and the third partition (16) divide the interior of the fixing base (1) into nine regions. The second partition (15) is located above the third partition (16), and the width of the second partition (15) is smaller than the width of the third partition (16).

4. The hydraulic device for preventing the backward movement of the movable reaction frame according to claim 3, characterized in that, The second partition (15), the third partition (16) and the bottom plate (12) are all provided with a U-shaped groove (10) on one side to facilitate the installation of the hydraulic cylinder (2).

5. The mobile counter-force frame locking hydraulic device according to claim 3, characterized in that, Each of the two first partitions (14) has a second arc surface on one side that mates with the shield machine shell.

6. The mobile counter-force frame locking hydraulic device according to claim 1, characterized in that, The hydraulic cylinder (2) is fitted with a fixing sleeve (21), and the top of the fixing sleeve (21) is provided with several fixing holes (212). The hydraulic cylinder (2) is fixedly connected to the fixing holes (212) by bolts.

7. The mobile counter-force frame locking hydraulic device according to claim 6, characterized in that, The bottom center of the fixed base (1) is provided with a plurality of assembly holes (17), and the fixed sleeve (21) is provided with a connecting hole (22) that mates with the assembly holes (17).

8. The mobile counter-force frame locking hydraulic device according to claim 6, characterized in that, A protective sleeve (23) is provided between the fixing sleeve (21) and the limiting post (4). The protective sleeve (23) has several first through holes, and the bottom of the fixing sleeve (21) has a second through hole that cooperates with the first through holes.

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