Shield segment grabbing and lifting mechanism and segment erector

Abstract

According to the shield segment grabbing and lifting mechanism and the segment erector, a grabbing and lifting shell is matched with a supporting part in an inserted mode through a mounting groove, then a locking assembly is contained through a locking groove, then the supporting part is locked in the mounting groove through the inserted and matched of the locking end of the locking assembly and the supporting part, and in the segment assembling process, the supporting part is locked in the mounting groove; the supporting part abuts against the pipe piece to support the snatching shell, that is, the supporting part can be abraded by the pipe piece, and when the supporting part is seriously abraded and needs to be replaced, the locking end of the locking assembly is separated from the supporting part, at the moment, the abraded supporting part can be disengaged out of the mounting groove, and after a new supporting part is inserted into the mounting groove, the supporting part can be replaced. According to the scheme, through cooperation of the snatching shell, the supporting part and the locking assembly, compared with the prior art, replacement of the supporting part can be easily and conveniently achieved, a user can conveniently maintain and overhaul the supporting part, practicability is high, and the snatching device is suitable for wide application and popularization.

Description

Technical Field

[0001] The utility model relates to the technical field of shield equipment, in particular to a shield segment grabbing mechanism and also to a segment assembling machine comprising the shield segment grabbing mechanism. Background Art

[0002] Shield construction is an advanced construction method for building underground tunnels. This method mainly uses a shield machine to dig underground, and under the protection of the shield, the excavation and lining operations are safely carried out inside the shield machine to form an underground tunnel. During the underground excavation of the shield machine, the cutterhead excavates the soil at the front end of the shield machine, while relying on the shell and lining segments to support the surface of the newly excavated tunnel to prevent the tunnel from collapsing. On the other hand, the lining segments provide support for the advancement of the shield machine, so the segment assembly is an indispensable part of the shield construction process.

[0003] At present, during the shield construction process, segment assembly is mainly achieved through the segment assembly machine on the shield machine. The segment assembly machine can quickly and accurately install prefabricated reinforced concrete segments on the surface of the newly excavated tunnel, thereby supporting the tunnel and preventing groundwater and soil infiltration and surface subsidence.

[0004] For example, Chinese utility model patent CN219826863U discloses a segment assembly machine grabbing mechanism and a segment assembly machine, including a yoke arm hinged with a locking cylinder, a grab plate arranged below the yoke arm, a locking cylinder piston rod of the locking cylinder passing through one end of the grab plate and hinged with a claw assembly, a plurality of pads are arranged on the side of the grab plate facing the segment, the arc surface surrounded by the lower end faces of each pad is consistent with the inner arc surface of the segment, and when the claw assembly grabs the segment, the grab plate is butt-jointed with the inner arc surface of the segment through the pad.

[0005] However, during the process of assembling the segments by the segment assembly machine, the pads on the grab plate will wear against the segments, thus causing damage to the pads. In the grab plate of the above-mentioned segment assembly machine, it is inconvenient to replace the pads on the grab plate after they are worn, which is time-consuming and labor-intensive, and affects the efficiency of the segment assembly. Utility Model Content

[0006] The utility model provides a shield segment grabbing mechanism and a segment assembling machine, so as to solve the technical problem that the pad on the grabbing plate in the existing segment assembling machine is inconvenient to replace.

[0007] According to one aspect of the utility model, a shield segment grabbing mechanism is provided, including a grabbing shell, a supporting part and a locking assembly, a mounting groove is recessed on the lower end portion of the grabbing shell, the supporting part can be movably plugged into the mounting groove and is used to abut the segment to support the grabbing shell during the segment assembly process, a locking groove connected to the mounting groove is provided in the grabbing shell, the locking assembly is arranged in the grabbing shell and the locking end is movably arranged in the locking groove, the locking end of the locking assembly is used to plug and cooperate with the supporting part to lock the supporting part in the mounting groove or to separate the supporting part so that the supporting part can be removed from the mounting groove, a plurality of supporting parts are provided, and the mounting grooves and the supporting parts are arranged in a one-to-one correspondence.

[0008] As a further improvement of the above technical solution:

[0009] Furthermore, the locking assembly includes a rotating screw rotatably arranged in the locking groove, a driving member for driving the rotating screw to rotate, a movable block threadedly connected to the rotating screw, a locking portion arranged on the movable block for plugging and cooperating with the supporting portion, and a guide rod passing through the movable block and fixedly arranged in the locking groove.

[0010] Furthermore, the driving member includes a worm wheel sleeved on the screw, a worm rotatably arranged on the grab housing and meshing with the worm wheel, and a rotating part connected to the end of the worm extending outside the grab housing and used to drive the worm to rotate.

[0011] Furthermore, the locking groove is arranged between the two installation grooves, the rotating screw is a bidirectional screw and is respectively connected to the two movable blocks, and the locking part and the movable blocks are arranged in a one-to-one correspondence.

[0012] Furthermore, a locking groove for plugging and cooperating with the locking portion is recessed on the side wall of the supporting portion.

[0013] Furthermore, an elastic pad is arranged on the lower end of the support portion.

[0014] Furthermore, a rolling groove is recessed on the side wall of the mounting groove, and a rolling portion for rolling cooperation with the supporting portion is arranged in the rolling groove.

[0015] Furthermore, a positioning protrusion is convexly provided on the bottom of the installation groove, and a positioning groove for plugging and matching with the positioning protrusion is concavely provided on the insertion end of the support part.

[0016] Furthermore, the shield segment grabbing mechanism also includes a claw assembly hinged to the grabbing shell.

[0017] According to another aspect of the utility model, a segment assembling machine is also provided, which includes the above-mentioned shield segment grabbing mechanism.

[0018] The utility model has the following beneficial effects:

[0019] The utility model discloses a shield tunneling segment grabbing mechanism, the grabbing shell is plugged and matched with the support part through the installation groove, and then the locking end of the locking assembly is accommodated through the locking groove, and then the locking end of the locking assembly is plugged and matched with the support part to lock the support part in the installation groove. During the segment assembly process, the support part abuts against the segment to support the grabbing shell, that is, the support part will be worn by the segment. When the support part is seriously worn and needs to be replaced, the locking end of the locking assembly is separated from the support part. At this time, the worn support part can be disengaged from the installation groove, so that after the new support part is inserted into the installation groove, the locking end of the locking assembly is plugged and matched with the support part, that is, the replacement of the support part is realized. Compared with the prior art, the present scheme can realize the replacement of the support part simply and conveniently through the coordinated cooperation of the grabbing shell, the support part and the locking assembly, and is convenient for users to maintain and repair the support part. It is highly practical and suitable for wide promotion and application.

[0020] In addition to the above-described purposes, features and advantages, the present invention has other purposes, features and advantages. The present invention will be further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings constituting a part of this application are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0022] Figure 1 It is a structural schematic diagram of a shield segment grabbing mechanism of a preferred embodiment of the utility model;

[0023] Figure 2 It is a cross-sectional schematic diagram of a shield segment grabbing mechanism of a preferred embodiment of the utility model;

[0024] Figure 3 yes Figure 2 An enlarged schematic diagram of part A of the shield segment grabbing mechanism is shown.

[0025] Legend:

[0026] 1. Grab shell; 11. Positioning protrusion; 12. Rolling part; 2. Support part; 21. Elastic pad; 3. Locking assembly; 31. Rotating screw; 32. Movable block; 33. Locking part; 34. Guide rod; 35. Worm wheel; 36. Worm; 37. Rotating part; 4. Claw assembly. DETAILED DESCRIPTION

[0027] The embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. However, the present invention can be implemented in a variety of different ways as defined and covered below.

[0028] Figure 1It is a structural schematic diagram of a shield segment grabbing mechanism of a preferred embodiment of the utility model; Figure 2 It is a cross-sectional schematic diagram of a shield segment grabbing mechanism of a preferred embodiment of the utility model; Figure 3 yes Figure 2 An enlarged schematic diagram of part A of the shield segment grabbing mechanism is shown.

[0029] like Figure 1-Figure 3 As shown, the shield segment grabbing mechanism of this embodiment includes a grabbing shell 1, a support part 2 and a locking assembly 3. A mounting groove is recessed on the lower end of the grabbing shell 1. The support part 2 can be movably plugged into the mounting groove and is used to abut the segment during the segment assembly process to support the grabbing shell 1. A locking groove connected to the mounting groove is opened in the grabbing shell 1. The locking assembly 3 is arranged in the locking groove and the locking end is movably arranged. The locking end of the locking assembly 3 is used to plug and cooperate with the support part 2 to lock the support part 2 in the mounting groove or to separate from the support part 2 so that the support part 2 can be removed from the mounting groove. A plurality of support parts 2 are provided, and the mounting grooves and support parts 2 are arranged one by one. The locking assembly 3 is then engaged with the support part 2 to lock the support part 2 in the installation groove. Optionally, four support parts 2 are provided, and the four support parts 2 are arranged at intervals in the horizontal direction on the mounting groove of the grab housing 1. Optionally, the support part 2 is a block-shaped or columnar structure.

[0030] like Figure 3As shown, in this embodiment, the locking assembly 3 includes a rotating screw 31 rotatably arranged in the locking groove, a driving member for driving the rotating screw 31 to rotate, a movable block 32 threadedly connected to the rotating screw 31, a locking portion 33 arranged on the movable block 32 for plugging and matching with the support portion 2, and a guide rod 34 passing through the movable block 32 and fixedly arranged in the locking groove. Specifically, when it is necessary to disassemble the support portion 2, the driving member drives the rotating screw 31 to rotate, so as to drive the movable block 32 to move along the axial direction of the rotating screw 31, and under the action of the guide rod 34, the movable block 32 is ensured to run smoothly, so that the locking portion 33 is close to the support portion 2 to be plugged and matched with the support portion 2, thereby locking the support portion 2, or the locking portion 33 is away from the support portion 2 to be separated from the support portion 2, so that the support portion 2 can be removed. Optionally, in this embodiment, the opening of the mounting groove is arranged downward so that the supporting end of the support part 2 extends out to abut the pipe sheet, and the opening of the locking groove is opened in the horizontal direction. The axial direction of the rotating screw 31 is arranged in the horizontal direction so that the movable block 32 can move in the horizontal direction, thereby making the locking part 33 and the support part 2 plug-in fit in the horizontal direction.

[0031] like Figure 3 As shown, in this embodiment, the driving member includes a worm wheel 35 sleeved on the screw, a worm 36 rotatably arranged on the grab housing 1 and meshing with the worm wheel 35, and a rotating portion 37 connected to the end of the worm 36 extending outside the grab housing 1 for driving the worm 36 to rotate. Specifically, the worm 36 is driven to rotate by the rotating portion 37 to drive the worm wheel 35 to rotate, and then drive the rotating screw 31 to rotate, so as to realize the disassembly and assembly of the support part 2. Optionally, in this embodiment, the rotating portion 37 is a knob for manual screwing. In another embodiment, the rotating portion 37 is an electric drive structure, such as a combination of a motor and a reducer, to achieve automatic locking and separation of the support part 2.

[0032] like Figure 2 As shown, in this embodiment, the locking groove is arranged between the two installation grooves, the rotating screw 31 is a bidirectional screw and is connected to the two movable blocks 32 respectively, and the locking parts 33 and the movable blocks 32 are arranged one by one. Specifically, when the rotating screw 31 rotates, the two movable blocks 32 are driven to move at the same time, and then the two locking parts 33 are driven to move at the same time, so as to realize the simultaneous disassembly and assembly of the two support parts 2, greatly improving the disassembly and assembly efficiency. Optionally, in this embodiment, the snatch housing 1 is provided with four installation grooves and two locking grooves.

[0033] like Figure 2As shown, in this embodiment, a locking groove for plugging and matching with the locking portion 33 is recessed on the side wall of the support portion 2. Specifically, the support portion 2 can be locked in the installation groove by plugging and matching the locking groove with the locking portion 33. Optionally, when the movable block 32 moves along the axial direction of the rotating screw 31, part of the locking block extends into the installation groove to plug and match with the locking groove, thereby locking the support portion 2.

[0034] like Figure 1 As shown, in this embodiment, an elastic pad 21 is arranged on the lower end of the support part 2. Specifically, the support part 2 abuts against the tube sheet through the elastic pad 21 to improve the wear resistance of the support part 2 and extend the service life of the support part 2. Optionally, the elastic pad 21 is made of rubber.

[0035] like Figure 2 As shown, in this embodiment, a rolling groove is recessed on the side wall of the mounting groove, and a rolling portion 12 for rolling cooperation with the support portion 2 is arranged in the rolling groove. Specifically, by recessing the rolling groove on the side wall of the mounting groove, and then arranging the rolling portion 12 in the rolling groove, when the support portion 2 is disassembled, the rolling portion 12 rolls with the support portion 2 to reduce friction, thereby further improving the convenience of disassembly and assembly of the support portion 2. Optionally, the rolling groove is arranged in a spherical shape, and a plurality of rolling grooves are arranged at intervals along the axis of the mounting groove, and the rolling portion 12 is arranged in a spherical shape to match the rolling groove.

[0036] like Figure 2 As shown, in this embodiment, a positioning protrusion 11 is convexly provided on the bottom of the installation groove, and a positioning groove for plugging and matching with the positioning protrusion 11 is concavely provided on the insertion end of the support part 2. Specifically, after the support part 2 is inserted into the installation groove, the positioning protrusion 11 and the positioning groove are plugged and matched to achieve accurate positioning of the support part 2 after insertion, thereby improving the assembly accuracy, thereby improving the stability and reliability of the grabbing mechanism.

[0037] like Figure 1 As shown, in this embodiment, the shield segment grabbing mechanism further includes a clamping claw assembly 4 hinged to the grabbing housing 1. Specifically, the segment is grabbed by the clamping claw assembly 4 to realize segment assembly. Optionally, the clamping claw assembly 4 includes two clamping claws arranged opposite to each other.

[0038] The segment assembly machine of this embodiment includes the above-mentioned shield segment grabbing mechanism. Specifically, by adopting the above-mentioned shield segment grabbing mechanism in the segment assembly machine, the support part 2 can be quickly disassembled and assembled after being worn, so as to facilitate maintenance, repair and replacement of the support part 2, thereby avoiding affecting the assembly of the segment.

[0039] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A shield segment grabbing mechanism, characterized in that: The invention comprises a grab shell (1), a support part (2) and a locking assembly (3); a mounting groove is recessed on the lower end of the grab shell (1); the support part (2) can be movably plugged into the mounting groove and is used to abut against the pipe segment during the pipe segment assembly process to support the grab shell (1); a locking groove connected to the mounting groove is provided in the grab shell (1); the locking assembly (3) is arranged in the grab shell (1) and the locking end can be movably arranged in the locking groove; the locking end of the locking assembly (3) is used to be plugged into the support part (2) to lock the support part (2) in the mounting groove or to be separated from the support part (2) so that the support part (2) can be removed from the mounting groove; a plurality of support parts (2) are provided, and the mounting grooves and support parts (2) are arranged in a one-to-one correspondence.

2. The shield segment grabbing mechanism according to claim 1, characterized in that: The locking assembly (3) comprises a rotating screw (31) rotatably arranged in a locking groove, a driving member for driving the rotating screw (31) to rotate, a movable block (32) threadedly connected to the rotating screw (31), a locking portion (33) arranged on the movable block (32) and used for plugging and matching with the support portion (2), and a guide rod (34) passing through the movable block (32) and fixedly arranged in the locking groove.

3. The shield segment grabbing mechanism according to claim 2, characterized in that: The driving member comprises a worm wheel (35) sleeved on the screw, a worm (36) rotatably arranged on the lifting housing (1) and meshing with the worm wheel (35), and a rotating part (37) connected to the end of the worm (36) extending outside the lifting housing (1) and used for driving the worm (36) to rotate.

4. The shield segment grabbing mechanism according to claim 2, characterized in that: The locking groove is arranged between the two installation grooves, the rotating screw (31) is a bidirectional screw and is respectively connected to the two movable blocks (32), and the locking portion (33) and the movable blocks (32) are arranged in a one-to-one correspondence.

5. The shield segment grabbing mechanism according to claim 2, characterized in that: A locking groove for plugging and matching with the locking portion (33) is recessed on the side wall of the support portion (2).

6. The shield segment grabbing mechanism according to any one of claims 1 to 5, characterized in that: An elastic pad (21) is arranged on the lower end of the support part (2).

7. The shield segment grabbing mechanism according to any one of claims 1 to 5, characterized in that: A rolling groove is recessed on the side wall of the installation groove, and a rolling portion (12) for rolling cooperation with the support portion (2) is arranged in the rolling groove.

8. The shield segment grabbing mechanism according to any one of claims 1 to 5, characterized in that: A positioning protrusion (11) is convexly provided on the bottom of the installation groove, and a positioning groove for plugging and matching with the positioning protrusion (11) is concavely provided on the insertion end of the support part (2).

9. The shield segment grabbing mechanism according to any one of claims 1 to 5, characterized in that: The shield segment grabbing mechanism also includes a clamping claw assembly (4) hinged to the grabbing shell (1).

10. A segment assembly machine, characterized in that: It comprises the shield segment grabbing mechanism as described in any one of claims 1-9.

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