Shutdown anti-sedimentation cutterhead structure of shield tunneling machine in upper-soft and lower-hard stratum

Abstract

The utility model relates to the technical field of shield tunneling, in particular to an upper-soft lower-hard stratum shield tunneling machine shutdown anti-sedimentation cutterhead structure which comprises a shield tunneling machine, a cutterhead and a connecting base, a mounting groove is formed in the surface of the shield tunneling machine in a penetrating mode, an embedding groove is formed in the outer surface of the shield tunneling machine, and the connecting base is connected to the inner side of the mounting groove in an embedded mode. And the surface of the connecting base is in abutting contact with an abutting plate, the surface of the abutting plate is fixedly connected with a supporting frame, a containing groove is formed in the surface of the connecting base in a penetrating mode, and the bottom end of the connecting base is connected with a supporting plate through a bolt. According to the shield tunneling machine, the telescopic air cylinder is connected with the supporting frame, the effect of adjusting and controlling the position of the abutting plate in the containing groove is achieved, the abutting and supporting effect of the abutting plate on a geological layer above the shield tunneling machine is achieved, the protection performance of shutdown operation of the shield tunneling machine is improved, and it is avoided that slurry of an upper soft layer flows, collapse of the excavation position is caused, and the safety of shield operation is affected.

Description

Technical Field

[0001] The utility model relates to the technical field of shield machines, in particular to a shield machine stop anti-settling cutterhead structure in soft upper and hard lower strata. Background Art

[0002] When the shield machine passes through the soft upper layer and the hard lower layer, the softer upper layer sinks and deforms during the shield machine maintenance shutdown project, causing landslides at the excavation location and affecting the safety of the shield operation. Utility Model Content

[0003] The purpose of the utility model is to provide a shield machine shutdown anti-settling cutterhead structure in soft upper and hard lower strata, so as to solve the problem proposed in the above background technology that during the shield machine shutdown project for maintenance, the softer upper bottom layer sinks and deforms, causing landslides at the excavation position and affecting the safety of the shield operation.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a shield machine shutdown anti-subsidence cutterhead structure for soft upper and hard lower strata, comprising a shield machine, a cutterhead and a connecting seat, the surface of the shield machine is provided with a mounting groove, the outer surface of the shield machine is provided with an embedding groove, the inner side of the mounting groove is embedded with a connecting seat, the surface of the connecting seat is in contact with a push plate, the surface of the push plate is fixedly connected to a support frame, the surface of the connecting seat is provided with a placement groove, the bottom end of the connecting seat is connected to a support plate by bolts, and the surface of the support plate is fixedly connected to a telescopic cylinder.

[0005] Preferably, a groove is provided on the surface of the shield machine, and a screw is fixedly connected to the inner side of the groove, a fixing block is fixedly connected to the outer surface of the connecting seat, and the fixing block passes through the surface of the screw and is connected to a nut.

[0006] Preferably, the abutment plate is engaged with the connecting seat and the embedding groove, and the curvature of the surface of the abutment plate is the same as the curvature of the surface of the shield machine.

[0007] Preferably, the support frame acts on the inside of the placement groove through the abutment plate, and the cross-section of the support frame is in a "]" shape.

[0008] Preferably, a connecting frame is fixedly connected to the four sides of the support plate, and the cross section of the connecting frame is "L"-shaped. The support plate is fixedly connected to the connecting seat through the connecting frame and bolts.

[0009] Preferably, the support plate is in a block shape and acts below the connecting seat, and the output shaft of the telescopic cylinder is fixedly connected to the support frame.

[0010] Compared with the prior art, the beneficial effects of the present invention are:

[0011] 1. Through the connection between the shield machine and the installation slot, under the action of the installation slot, it is convenient to limit and engage the placement position of the connecting seat and the abutment plate on the shield machine. Through the connection between the placement slot and the connecting seat, under the action of the placement slot, it is convenient to place the support frame in the placement slot. Through the connection between the support plate and the connecting seat, and the connection between the telescopic cylinder and the support frame, the position of the abutment plate in the placement slot is regulated, and the abutment support effect of the abutment plate on the geological layer above the shield machine is realized, thereby improving the protection performance of the shield machine during shutdown operation, avoiding the flow of mud in the upper soft layer, causing collapse of the excavation position, and affecting the safety of the shield operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is the engineering drawing of the utility model;

[0013] Figure 2 This is a frontal perspective schematic diagram of the structure of the present utility model;

[0014] Figure 3 This is a three-dimensional schematic diagram of the connection structure between the shield machine and the connecting seat of the utility model;

[0015] Figure 4 This is a three-dimensional exploded schematic diagram of the connection structure of the shield machine and the connecting seat of the utility model;

[0016] Figure 5 It is a three-dimensional exploded schematic diagram of the connection structure of the connecting seat and the abutment plate of the utility model.

[0017] In the figure: 1. Shield machine; 2. Cutterhead; 3. Connecting seat; 31. Placement slot; 4. Abutment plate; 41. Support frame; 5. Mounting slot; 6. Embedded slot; 7. Support plate; 8. Telescopic cylinder. DETAILED DESCRIPTION

[0018] See also Figure 1-5 , an embodiment provided by the utility model:

[0019] A shield machine shutdown anti-settling cutterhead structure for soft upper and hard lower ground, comprising a shield machine 1, a cutterhead 2 and a connecting seat 3. A mounting groove 5 is provided through the surface of the shield machine 1, an embedding groove 6 is provided on the outer surface of the shield machine 1, the connecting seat 3 is embedded and connected to the inner side of the mounting groove 5, the surface of the connecting seat 3 is in contact with a push plate 4, the surface of the push plate 4 is fixedly connected to a support frame 41, a placement groove 31 is provided through the surface of the connecting seat 3, the bottom end of the connecting seat 3 is connected to a support plate 7 by bolts, the surface of the support plate 7 is fixedly connected to a telescopic cylinder 8, the shield operation is completed by the connection between the shield machine 1 and the cutterhead 2 under the action of the cutterhead 2, and the anti-settling support operation of the push plate 4 on the soft layer of the tunnel is completed by the connection between the connecting seat 3 and the shield machine 1, through the connection between the push plate 4 and the telescopic cylinder 8.

[0020] Furthermore, a groove is provided on the surface of the shield machine 1, and a screw is fixedly connected to the inner side of the groove, and a fixed block is fixedly connected to the outer surface of the connecting seat 3. The fixed block passes through the surface of the screw and is connected to a nut. Through the action of the groove and the screw on the surface of the shield machine 1, the connection between the fixed block and the screw on the connecting seat 3 achieves a support and control effect on the position of the connecting seat 3 on the mounting groove 5.

[0021] Furthermore, the butt plate 4 is engaged with the embedding groove 6 through the connecting seat 3, and the curvature of the surface of the butt plate 4 is the same as the curvature of the surface of the shield machine 1. Through the connection between the butt plate 4 and the connecting seat 3, under the action of the connecting seat 3, the embedding placement effect of the butt plate 4 in the embedding groove 6 is achieved.

[0022] Furthermore, the support frame 41 acts on the inside of the placement groove 31 through the support plate 4. The cross-section of the support frame 41 is in a "]" shape. Through the connection between the support plate 4 and the support frame 41, and the connection between the placement groove 31 and the connecting seat 3, the placement and support operation of the support frame 41 in the placement groove 31 is completed.

[0023] Furthermore, the support plate 7 is fixedly connected to a connecting frame on all four sides, and the cross-section of the connecting frame is "L"-shaped. The support plate 7 is fixedly connected to the connecting seat 3 through the connecting frame and bolts. Through the action of the connecting frame on the support plate 7, under the action of the connecting frame, the support effect of the support plate 7 at the position below the connecting seat 3 is achieved.

[0024] Furthermore, the support plate 7 is in a block shape and acts below the connecting seat 3. The output shaft of the telescopic cylinder 8 is fixedly connected to the support frame 41. Through the connection between the support plate 7 and the telescopic cylinder 8, and the connection between the output shaft on the telescopic cylinder 8 and the support frame 41, the control effect of the position of the abutment plate 4 on the connecting seat 3 is achieved.

[0025] Working principle: When performing shield operation on the upper soft and lower hard strata, when the shield machine 1 is stopped, the telescopic cylinder 8 is started to push the telescopic cylinder 8 to change the position of the back plate 4. At this time, the position of the back plate 4 on the connecting seat 3 is changed, and the back plate 4 is in contact with the surface of the shield tunnel to achieve the effect of anti-settlement. When the connecting seat 3 is installed, through the connection between the connecting seat 3 and the installation groove 5, and the connection between the shield machine 1 and the embedding groove 6, it is convenient to embed the connecting seat 3 on the shield machine 1, thereby improving the convenience of disassembly and assembly and the speed of operation.

Claims

1. A shield machine cutterhead structure for preventing subsidence during shutdown in soft upper and hard lower strata, comprising a shield machine, a cutterhead, and a connecting seat, characterized in that: The surface of the shield machine is provided with an installation groove, the outer surface of the shield machine is provided with an embedding groove, the inner side of the installation groove is embedded with a connecting seat, the surface of the connecting seat is in contact with a push plate, the surface of the push plate is fixedly connected to a support frame, the surface of the connecting seat is provided with a placement groove, the bottom end of the connecting seat is connected to a support plate by bolts, and the surface of the support plate is fixedly connected to a telescopic cylinder.

2. The cutterhead structure for preventing the shield machine from sinking during shutdown in soft upper and hard lower strata according to claim 1, characterized in that: A groove is provided on the surface of the shield machine, and a screw is fixedly connected to the inner side of the groove. A fixing block is fixedly connected to the outer surface of the connecting seat, and the fixing block passes through the surface of the screw and is connected to a nut.

3. The cutterhead structure for preventing the shield machine from sinking during shutdown in soft upper and hard lower strata according to claim 1, characterized in that: The abutment plate is engaged with the embedding groove through the connecting seat, and the curvature of the surface of the abutment plate is the same as the curvature of the surface of the shield machine.

4. The cutterhead structure for preventing the shield machine from sinking during shutdown in soft upper and hard lower strata according to claim 1, characterized in that: The support frame acts on the inside of the placement groove through the abutment plate, and the cross-section of the support frame is in a "]" shape.

5. The cutterhead structure for preventing the shield machine from sinking during shutdown in soft upper and hard lower strata according to claim 1, characterized in that: The support plate is fixedly connected to a connecting frame around its periphery, and the cross-section of the connecting frame is "L"-shaped. The support plate is fixedly connected to the connecting seat through the connecting frame and bolts.

6. A shield machine for preventing subsidence during shutdown in soft upper and hard lower strata according to claim 1 The cutter head structure is characterized by: The support plate is in block shape and acts below the connecting seat. The output shaft of the telescopic cylinder is fixedly connected to the support frame.

Images