Supporting shoe device of heading machine and heading machine

Abstract

The utility model relates to the field of heading machines, in particular to a heading machine gripper shoe device and a heading machine. The supporting shoe device of the heading machine comprises a supporting shoe and a return driving device arranged on the supporting shoe, the upper return driving device and / or the lower return driving device comprise / comprises a sleeve fixedly arranged between the supporting plate and the shoe plate and a telescopic rod arranged in the sleeve in a sliding mode, and one end of the telescopic rod penetrates through the shoe plate. A sleeve of an upper aligning driving device and / or a lower aligning driving device is arranged between a supporting plate and a shoe plate so that space can be saved, the sleeve is divided into two cavities through a piston part of a telescopic rod, the telescopic rod at the boundary of the cavities is pushed through an air source or a hydraulic source, then the telescopic rod can act on a meshing part when needed, and therefore the telescopic rod can be driven to rotate. The support shoe is convenient to adjust; therefore, the problem that in the prior art, the return driving device is arranged on the inner side of the shoe plate of the supporting shoe and occupies the external space of the supporting shoe is solved.

Description

Technical Field

[0001] The utility model relates to the field of tunnel boring machines, in particular to a tunnel boring machine support shoe device and a tunnel boring machine. Background Art

[0002] In the process of tunnel construction, a tunnel boring machine is often used to dig the tunnel. The tunnel boring machine includes a cutterhead at the front end and a main beam behind the cutterhead. A support shoe is also provided at the rear end of the main beam, and a thrust cylinder is provided between the main beam and the support shoe. The support shoe is used to support the side wall of the excavated tunnel. When in use, the two ends of the thrust cylinder act on the support shoe and the main beam respectively. The main beam and the support shoe are subjected to a set of forces of equal magnitude and opposite directions. The support shoe remains fixed to the side wall of the tunnel due to friction. In other words, if the cutterhead wants to move forward, the support shoe needs to be stably supported on the side wall of the tunnel. When the thrust cylinder extends the set length and pushes the cutterhead to dig a certain distance, the support shoe shrinks and leaves the side wall of the tunnel, and moves forward under the contraction of the thrust cylinder, that is, the tunnel boring machine moves forward through the step-changing operation.

[0003] Due to the complexity of geological conditions, the side walls of excavated tunnels are not necessarily hard and flat. For example, broken fracture zones may be encountered during tunnel excavation. The tunnel wall formed on the broken fracture zone is of poor quality, and collapse and slag accumulation often occur on the side of the tunnel. When the gripper is supported on an irregular side wall, the gripper's posture will change and deflect. When the step-changing operation is performed, the gripper will be retracted in the changed posture and then move forward. The gripper with the changed posture will interfere with the rock wall or equipment, resulting in obstruction of forward movement. Therefore, there is also a structure in the prior art for automatically adjusting the gripper of the tunnel boring machine.

[0004] For example, a Chinese utility model patent with authorization announcement number CN206419024U and authorization announcement date August 18, 2017 discloses a main beam type TBM support shoe automatic return drive device and a main beam type TBM. The support shoe automatic return drive device includes a double spherical meshing end (i.e., the meshing part) arranged on the support shoe cylinder and a ball head (i.e., the connecting part) matched therewith, and the ball head is fixedly connected to the support shoe. The support shoe includes an arc-shaped support plate for fitting with the side wall of the tunnel and a shoe plate located on the inner side of the support plate. Four stabilizing cylinders (i.e., return drive devices) are also arranged on the shoe plate of the support shoe. The stabilizing cylinders include a cylinder body located outside the support shoe and a telescopic rod extending into the support shoe. The end of the telescopic rod is hingedly connected with a transmission connecting rod. The transmission connecting rod constitutes a lever structure, one end of which is connected to the stabilizing cylinder, and the other end is abutted against the double spherical meshing end through a balancing pin. The force generated by the stabilizing cylinder acts on the support shoe and the double spherical meshing end respectively. Since the four groups of stabilizing cylinders are evenly distributed, the force will be balanced only when the strokes of the telescopic rods of the four groups of stabilizing cylinders are consistent. When the strokes of the four groups of stabilizing cylinders are consistent, the support shoe is also in a return state.

[0005] However, in the above technical solution, the four groups of stabilizing cylinders are all outside the support shoes, which will occupy the space outside the support shoes. Generally speaking, a walking platform for people to walk on is also required to be set above the ball head between the two support shoes, and the position below the ball head between the two support shoes is often used as a material passage for materials and slag to pass through. If the stabilizing cylinder extends to the ball head and occupies space, it is necessary to increase the height of the walking platform to avoid the stabilizing cylinder. However, the height of the tunnel is limited. Raising the walking platform will reduce the distance between the walking platform and the top of the tunnel, and people are prone to bumping into each other during walking, which will cause safety problems. The setting of the bottom cylinder will cause the material passage to become narrower. That is, the external stabilizing cylinder and the horizontal arrangement of the cylinder will occupy the space outside the support shoes. Utility Model Content

[0006] The purpose of the utility model is to provide a roadheader shoe device, which is used to solve the problem in the prior art that the return drive device is arranged on the inner side of the shoe plate of the shoe and occupies the space outside the shoe; the purpose of the utility model is also to provide a roadheader for solving the above technical problems.

[0007] In order to achieve the above-mentioned purpose, the roadheader shoe device in the utility model adopts the following technical solutions:

[0008] A tunnel boring machine support shoe device comprises a support shoe and a return drive device arranged on the support shoe, the support shoe comprises an arc-shaped support plate and a shoe plate inside the support plate, the return drive device comprises an upper return drive device and a lower return drive device, the upper return drive device and / or the lower return drive device comprises a sleeve fixedly arranged between the support plate and the shoe plate and a telescopic rod slidably arranged in the sleeve, one end of the telescopic rod passes through the shoe plate, and the telescopic rod is also provided with a piston part that fits with the inner surface of the sleeve to form two independent cavities in the sleeve, and the two cavities respectively have openings connected to an external air source or a hydraulic source, and the telescopic rod and the sleeve are directly or indirectly sealed.

[0009] Furthermore, a groove is provided on one end of the shoe plate facing the sleeve, an annular gasket is provided in the groove, and the sleeve is fixed on the shoe plate through the gasket.

[0010] Furthermore, a sealing ring for sealingly cooperating with the telescopic rod is arranged on the inner wall of the annular gasket, and the annular gasket is fixed and sealingly connected to the end of the sleeve so that the telescopic rod and the sleeve are indirectly sealed and cooperating.

[0011] Furthermore, both ends of the sleeve have openings, and the ends of the sleeve are welded to the support plate.

[0012] Furthermore, the piston portion is arranged at the end of the telescopic rod, and the two cavities in the sleeve respectively constitute a rod cavity and a rodless cavity.

[0013] Furthermore, an inward closing section is provided on the inner wall of the sleeve at one end facing the boot plate.

[0014] Furthermore, a ball head is provided on the shoe plate, and a plurality of return drive devices are symmetrically arranged about the axis of the ball head.

[0015] The beneficial effects of the shoe support device of a tunnel boring machine in the utility model are as follows: the utility model improves the existing shoe support device of a tunnel boring machine, and by arranging a shoe support and a return drive device, it is convenient to automatically adjust the shoe support; the sleeve of the upper return drive device and / or the lower return drive device is arranged between the support plate and the shoe plate to save space, the sleeve is divided into two cavities by the piston part of the telescopic rod, and openings connected to an external air source or hydraulic source are respectively arranged on the two cavities to facilitate pushing the telescopic rod at the boundary of the cavities by the air source or hydraulic source, so that the telescopic rod can act on the meshing part when needed, so as to facilitate the adjustment of the shoe support; by fixing and sealing the sleeve between the support plate and the shoe plate, and directly or indirectly sealing and cooperating between the telescopic rod and the sleeve, gas or liquid leakage is avoided; in addition, since the sleeves are respectively fixed between the support plate and the shoe plate, the space between the support plate and the shoe plate can be utilized to the maximum extent, thereby solving the problem in the prior art that the return drive device is arranged on the inner side of the shoe plate of the shoe support and occupies the space outside the shoe support.

[0016] In order to achieve the above-mentioned purpose, the tunnel boring machine in the utility model adopts the following technical solutions:

[0017] A tunnel boring machine comprises a shoe support cylinder and a shoe support device located at the end of the shoe support cylinder, wherein the shoe support device comprises a shoe support and a return drive device arranged on the shoe support, the shoe support comprises an arc-shaped support plate and a shoe plate inside the support plate, the return drive device comprises an upper return drive device and a lower return drive device, the upper return drive device and / or the lower return drive device comprises a sleeve fixedly arranged between the support plate and the shoe plate and a telescopic rod slidably arranged in the sleeve, one end of the telescopic rod passes through the shoe plate, and the telescopic rod is also provided with a piston portion that fits with the inner surface of the sleeve to form two independent cavities in the sleeve, and the two cavities respectively have openings connected to an external air source or a hydraulic source, and the telescopic rod and the sleeve are directly or indirectly sealed.

[0018] Furthermore, a groove is provided on one end of the shoe plate facing the sleeve, an annular gasket is provided in the groove, and the sleeve is fixed on the shoe plate through the gasket.

[0019] Furthermore, a sealing ring for sealingly cooperating with the telescopic rod is arranged on the inner wall of the annular gasket, and the annular gasket is fixed and sealingly connected to the end of the sleeve so that the telescopic rod and the sleeve are indirectly sealed and cooperating.

[0020] Furthermore, both ends of the sleeve have openings, and the ends of the sleeve are welded to the support plate.

[0021] Furthermore, the piston portion is arranged at the end of the telescopic rod, and the two cavities in the sleeve respectively constitute a rod cavity and a rodless cavity.

[0022] Furthermore, an inward closing section is provided on the inner wall of the sleeve at one end facing the boot plate.

[0023] Furthermore, a ball head is provided on the shoe plate, and a plurality of return drive devices are symmetrically arranged about the axis of the ball head.

[0024] The beneficial effects of the shoe support device of the tunnel boring machine in the utility model are as follows: the utility model improves the existing tunnel boring machine, and facilitates the automatic adjustment of the shoe support by arranging the shoe support and the return drive device; the sleeve of the upper return drive device and / or the lower return drive device is arranged between the support plate and the shoe plate to save space, and the sleeve is divided into two cavities by the piston part of the telescopic rod, and openings connected to the external air source or hydraulic source are respectively arranged on the two cavities to facilitate the pushing of the telescopic rod at the boundary of the cavities by the air source or hydraulic source, so that the telescopic rod can act on the meshing part when needed, so as to facilitate the adjustment of the shoe support; by fixing and sealing the sleeve between the support plate and the shoe plate, and directly or indirectly sealing and cooperating between the telescopic rod and the sleeve, gas or liquid leakage is avoided; in addition, since the sleeves are respectively fixed between the support plate and the shoe plate, the space between the support plate and the shoe plate can be utilized to the maximum extent, thereby solving the problem in the prior art that the return drive device is arranged on the inner side of the shoe plate of the shoe support and occupies the space outside the shoe support. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of an embodiment of the roadheader shoe device in the utility model;

[0026] Figure 2 It is a cross-sectional schematic diagram of an embodiment of the roadheader shoe device of the utility model (when the shoe is returned to the center);

[0027] Figure 3 It is a cross-sectional schematic diagram of an embodiment of the roadheader gripper device of the utility model (when the gripper is deflected);

[0028] Figure 4 for Figure 3 A partial enlarged view of point A in the middle.

[0029] In the figure: 1, support shoe; 11, support plate; 12, shoe plate; 13, ball head; 2, support shoe cylinder; 21, meshing part; 31, upper return drive device; 32, lower return drive device; 33, sleeve; 34, telescopic rod; 35, opening; 36, annular pad; 37, middle return drive device. DETAILED DESCRIPTION

[0030] The features and performance of the present invention are further described in detail below in conjunction with the embodiments.

[0031] In the utility model, a sleeve is arranged between the support plate and the shoe plate of the support shoe, and a telescopic rod slidingly matched with the sleeve is arranged in the sleeve, so that the telescopic rod passes through the shoe plate from the inside of the support shoe and presses on the meshing part, thereby realizing the adjustment of the support shoe posture.

[0032] In the embodiment 1 of the roadheader shoe device of the utility model:

[0033] like Figure 1 and Figure 2 As shown, the tunnel boring machine shoe device in this embodiment includes a shoe 1, a meshing portion 21 for being arranged at the end of the shoe cylinder 2, and a connecting portion fixedly arranged on the shoe 1 and forming a spherical pair with the meshing portion 21. The shoe 1 includes an arc-shaped support plate 11 for fitting with the side wall of the tunnel and a shoe plate 12 located inside the support plate 11, and the shoe plate 12 is a flat plate. The connecting portion is fixedly arranged on the shoe plate 12 of the shoe 1. Specifically, the connecting portion is a ball head 13, one side of the ball head 13 is flush with the shoe plate 12 of the shoe 1, and the other side of the connecting portion is formed with a spherical surface protruding outward, and accordingly, the meshing portion 21 has an inwardly concave spherical surface meshed with the spherical surface on the connecting portion and concave inward. There is a certain distance between the end of the meshing portion 21 and the shoe plate 12 of the shoe 1, so that when the connecting portion and the meshing portion 21 are matched, the meshing portion 21 will not interfere with the shoe plate 12. Of course, in other embodiments, a concave spherical surface may be provided on the connecting portion, and an outwardly convex spherical surface may be provided on the meshing portion 21 .

[0034] like Figure 2 and Figure 3As shown, the area of ​​the meshing portion 21 on the circumferential surface is larger than the area of ​​the ball head 13, so that when the spherical surface is matched, part of the structure on the meshing portion 21 will be exposed, which is convenient for the return drive device to support when returning. At least three return drive devices are also arranged on the outer circumference of the ball head 13, and the return drive device spacing part is used to apply force to the meshing portion 21 and the connecting portion, so that the position is adjusted under the action of the spherical surface. When adjustment is required, the meshing portion 21 is supported by controlling one or more return drive devices so that the gripper 1 rotates relative to the gripper cylinder 2 under the reaction force. In this embodiment, there are four return drive devices, one of which is located above the ball head 13 to form an upper return drive device 31, and one is located below the ball head 13 to form a lower return drive device 32. In addition, two return drive devices are arranged on both sides of the ball head 13 in the horizontal direction to form a middle return drive device 37. Of course, in other embodiments, the return drive devices can also be set to three or five or other numbers not less than three.

[0035] like Figure 3 and Figure 4As shown, the upper return drive device 31 and the lower return drive device 32 have the same structure, and the upper return drive device 31 is used as an example for structural description. The upper return drive device 31 includes a sleeve 33 arranged between the support plate 11 and the shoe plate 12 and a telescopic rod 34 slidably arranged in the sleeve 33. The sleeve 33 has openings at both ends, wherein one end of the sleeve 33 is fixedly connected to the support plate 11 by welding, and the other end of the sleeve 33 is fixedly arranged on the shoe plate 12. Specifically, a groove is arranged on the shoe plate 12, and an annular gasket 36 is arranged in the groove, and is fixedly connected to the shoe plate 12 through the annular gasket 36. The sleeve 33 is welded to the annular gasket 36, and then the sleeve 33 and the annular gasket 36 are installed in the groove of the shoe plate 12. Through welding, the sleeve 33 and the support plate 11 and the shoe plate 12 are sealed and connected, thereby avoiding the risk of leakage. At the same time, both ends of the sleeve 33 can be opened, which is conducive to increasing the effective area inside the sleeve 33. At this time, the sleeve 33 is connected to the support shoe as a whole, thereby making the maximum use of the space between the support plate 11 and the shoe plate 12. In addition, the sleeve and the support shoe are set as one piece to reduce the connection and enhance the overall durability. Since the sleeve 33 is built into the space between the support plate 11 and the shoe plate 12, it no longer occupies the space outside the support shoe, which facilitates the arrangement of the external material channel and the walking platform. Of course, in other embodiments, the saved space is no longer used to arrange the material channel and the walking platform, but only the return drive device is built in to prevent the falling gravel during the excavation process from damaging the return drive device. Of course, in other embodiments, the sleeve 33 can also be a cylinder with one end open and the other end closed. In this case, the closed end of the sleeve 33 can also be screwed to the support plate 11. Alternatively, in other embodiments, the upper return drive device 31 and the lower return drive device 32 have different structures, and only the upper return drive device 31 is of the above-mentioned form, and the lower return drive device 32 has the same structure as the return drive device in the prior art; or only the lower return drive device 32 is of the above-mentioned form, and the upper return drive device 31 has the same structure as the return drive device in the prior art.

[0036] like Figure 3 and Figure 4As shown, one end of the telescopic rod 34 is slidably arranged inside the sleeve 33, and the other end extends out through the perforation on the boot plate 12 and abuts against the meshing portion 21. A boss protruding from the outer wall is arranged on one end of the telescopic rod 34 located inside the sleeve 33, and the boss fits with the inner wall of the sleeve 33 to divide the internal space of the sleeve 33 into a rod cavity and a rodless cavity. Two openings 35 are arranged on the side wall of the sleeve 33, one of which is connected to the rod cavity, and the other is connected to the rodless cavity. The two openings 35 are respectively used to communicate with the hydraulic source, and the coordinated operation of the oil inlet and outlet of the two openings 35 enables the telescopic rod 34 to be pushed outward under the action of the hydraulic oil to act on the meshing portion 21, thereby causing the spherical pair between the meshing portion 21 and the ball head 13 to rotate. Of course, in other embodiments, the two openings 35 can also be connected to the gas source respectively, and the compressed gas is used as the power for the movement of the telescopic rod 34.

[0037] like Figure 3 and Figure 4 As shown, an inward closing section is provided on the inner wall of the end of the sleeve 33 facing the boot plate 12. The closing section protrudes inwardly to reduce the distance of the outer peripheral surface of the telescopic rod 34, which is convenient for sealing. At the same time, it also makes the end of the sleeve 33 facing the boot plate 12 convenient for welding. In order to achieve the sealing between the telescopic rod 34 and the sleeve 33, a sealing ring that is sealed with the telescopic rod 34 is provided on the inner wall of the annular pad 36, and the sealing between the telescopic rod 34 and the sleeve 33 is achieved by the sealing ring. Of course, in other embodiments, a sealing ring can also be provided between the closing section and the telescopic rod 34 for sealing. Of course, in other embodiments, the annular pad 36 can also be omitted, and the end of the sleeve 33 and the boot plate 12 can be directly welded to achieve sealing. Alternatively, in other embodiments, a sealing ring can also be provided on the closing section, thereby directly achieving the sealing cooperation between the telescopic rod and the sleeve.

[0038] In the embodiment of the tunnel boring machine of the present utility model:

[0039] In this embodiment, the roadheader includes a shoe gripper cylinder and a shoe gripper device arranged at the end of the shoe gripper cylinder, wherein the shoe gripper device has the same structure as the shoe gripper device embodiment of the roadheader, and will not be repeated here. At this time, the shoe gripper cylinder and the connecting part are fixedly matched, and the connecting part is fixedly arranged on the shoe plate of the shoe gripper, and the two can rotate relative to each other under the action of the return drive device, thereby realizing the posture adjustment of the shoe gripper.

[0040] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. The patent protection scope of the present invention shall be based on the claims. All equivalent structural changes made using the description and drawings of the present invention shall be included in the protection scope of the present invention.

Claims

1. A roadheader shoe device, comprising a shoe and a return drive device arranged on the shoe, the shoe comprising an arc-shaped support plate and a shoe plate inside the support plate, the return drive device comprising an upper return drive device and a lower return drive device, characterized in that: The upper return drive device and / or the lower return drive device include a sleeve fixedly arranged between the support plate and the shoe plate and a telescopic rod slidably arranged in the sleeve, one end of the telescopic rod passes through the shoe plate, and the telescopic rod is also provided with a piston part that fits with the inner surface of the sleeve to form two independent cavities in the sleeve, and the two cavities respectively have openings connected to an external air source or hydraulic source, and the telescopic rod and the sleeve are directly or indirectly sealed.

2. The roadheader shoe device according to claim 1, characterized in that: A groove is arranged on one end of the shoe plate facing the sleeve, an annular pad is arranged in the groove, and the sleeve is fixed on the shoe plate through the pad.

3. The roadheader shoe device according to claim 2, characterized in that: A sealing ring for sealingly cooperating with the telescopic rod is arranged on the inner wall of the annular gasket, and the annular gasket is fixed and sealingly connected to the end of the sleeve so that the telescopic rod and the sleeve are indirectly sealed and cooperating.

4. The roadheader shoe device according to any one of claims 1 to 3, characterized in that: Both ends of the sleeve are provided with openings, and the ends of the sleeve are connected to the support plate by welding.

5. The roadheader shoe device according to any one of claims 1 to 3, characterized in that: The piston part is arranged at the end of the telescopic rod, and the two cavities in the sleeve respectively constitute a rod cavity and a rodless cavity.

6. The roadheader shoe device according to any one of claims 1 to 3, characterized in that: An inward closing section is arranged on the inner wall of the sleeve at one end facing the shoe plate.

7. The roadheader shoe device according to any one of claims 1 to 3, characterized in that: A ball head is arranged on the shoe plate, and a plurality of return drive devices are symmetrically arranged about the axis of the ball head.

8. A roadheader, comprising a gripper cylinder and a gripper device located at the end of the gripper cylinder, characterized in that: The shoe support device includes a shoe support and a return drive device arranged on the shoe support, the shoe support includes an arc-shaped support plate and a shoe plate inside the support plate, the return drive device includes an upper return drive device and a lower return drive device, and is characterized in that: the upper return drive device and / or the lower return drive device include a sleeve fixedly arranged between the support plate and the shoe plate and a telescopic rod slidably arranged in the sleeve, one end of the telescopic rod passes through the shoe plate, and the telescopic rod is also provided with a piston part that fits with the inner surface of the sleeve to form two independent cavities in the sleeve, and the two cavities respectively have openings connected to an external air source or a hydraulic source, and the telescopic rod and the sleeve are directly or indirectly sealed.

9. The tunnel boring machine according to claim 8, characterized in that: A groove is arranged on one end of the shoe plate facing the sleeve, an annular pad is arranged in the groove, and the sleeve is fixed on the shoe plate through the pad.

10. The tunnel boring machine according to claim 9, characterized in that: A sealing ring for sealingly cooperating with the telescopic rod is arranged on the inner wall of the annular gasket, and the annular gasket is fixed and sealingly connected to the end of the sleeve so that the telescopic rod and the sleeve are indirectly sealed and cooperating.

11. The tunnel boring machine according to any one of claims 8 to 10, characterized in that: Both ends of the sleeve are provided with openings, and the ends of the sleeve are connected to the support plate by welding.

12. The tunnel boring machine according to any one of claims 8 to 10, characterized in that: The piston part is arranged at the end of the telescopic rod, and the two cavities in the sleeve respectively constitute a rod cavity and a rodless cavity.

13. The tunnel boring machine according to any one of claims 8 to 10, characterized in that: An inward closing section is arranged on the inner wall of the sleeve at one end facing the shoe plate.

14. The tunnel boring machine according to any one of claims 8 to 10, characterized in that: A ball head is arranged on the shoe plate, and a plurality of return drive devices are symmetrically arranged about the axis of the ball head.

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