Shelling type shield tail structure

Abstract

The utility model relates to the technical field of shield tunneling, in particular to a shelling type shield tail structure which comprises a shield tail shell and a connecting shell, the connecting shell is connected to the outer surface of the shield tail shell in a sleeved mode, a fixing groove is formed in the surface of the shield tail shell, and a connecting groove and a clamping groove are formed in the face, making contact with the shield tail shell, of the connecting shell. Limiting grooves are formed in the two sides of the inner wall of the clamping groove, a circular groove is formed in the inner wall of the connecting groove, an abutting spring is fixedly connected to the inner side of the circular groove, an abutting plate is fixedly connected to the surface of the abutting spring, and a rotating rod is inserted into the inner side of the connecting shell. The shield tail shell is elastically connected with the rotating rod, under the abutting connection of the pressing block and the connecting groove, the effect of supporting the mounting position of the connecting shell on the shield tail shell is achieved, under the abutting contact of the pressing block and the fixing groove, slurry is prevented from permeating through a connecting gap between the rotating rod and the shield tail shell, and the using effect of the shield tail shell is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of shield machines, in particular to a shell-removing shield tail structure. Background Art

[0002] During the tunneling process of the shield machine, after assembling the segments, grouting needs to be injected behind the segments. After the slurry flows to the tail of the shield, the dry space causes the slurry to solidify and clump at the tail of the shield, affecting the operation of the shield machine. The clumps need to be removed. Usually, the tail of the shield machine needs to be broken open to remove the clumps, which is inconvenient to operate and has low work efficiency. Utility Model Content

[0003] The purpose of the utility model is to provide a shell-type shield tail structure to solve the problem in the above background technology that the tail of the shield machine needs to be broken open to remove the agglomerates, which is inconvenient to operate and has low work efficiency.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a shell-detachable shield tail structure, comprising a shield tail shell and a connecting shell, the connecting shell being sleeved on the outer surface of the shield tail shell, a fixing groove being provided on the surface of the shield tail shell, a connecting groove and a clamping groove being provided on the contacting side of the connecting shell and the shield tail shell, limiting grooves being provided on both sides of the inner wall of the clamping groove, a circular groove being provided on the inner wall of the connecting groove, and a resistance spring being fixedly connected to the inner side of the circular groove, a resistance spring being fixedly connected to the surface of the resistance spring, a rotating rod being inserted into the inner side of the connecting shell, a pressure block being fixedly connected to the surface of the rotating rod, a rotating handle being fixedly connected to the end of the rotating rod away from the pressure block, a supporting spring being fixedly connected to the surface of the rotating handle, an inserting block being fixedly connected to one end of the connecting shell, and a slot being provided at the other end of the connecting shell.

[0005] Preferably, the connection shells are distributed in four groups on the outer surface of the shield tail shell, and the connection shells are spliced ​​by slots and plug-in blocks, and the connection shells form a circular ring shape.

[0006] Preferably, the diameter of the connecting groove is larger than the diameter of the clamping groove, and the limiting grooves are distributed in two opposite groups on the inner side of the clamping groove.

[0007] Preferably, the shape of the fixing groove is consistent with that of the pressing block, the size of the fixing groove is larger than that of the pressing block, and the abutment plate is in a disc shape.

[0008] Preferably, the support plate is elastically connected to the connecting groove via a support spring, the support plate is in contact with the pressure block via the support spring, and the rotating rod is cylindrical in shape.

[0009] Preferably, the support spring is fixedly connected to one end away from the rotating handle with a circular ring-shaped piece, the support spring is sleeved on the outer surface of the rotating rod, and the rotating rod is elastically slidably connected to the shield tail shell through the support spring.

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

[0011] 1. Through the connection between the connecting shell and the slot, and the connection between the connecting shell and the plug-in block, the assembly of the connecting shells on the shield tail shell is realized under the plugging of the slot and the plug-in block. Through the elastic connection between the shield tail shell and the rotating rod, and the abutment connection between the pressing block and the connecting groove, the supporting effect of the installation position of the connecting shell on the shield tail shell is achieved.

[0012] 2. Through the connection of the resisting spring and the resisting plate, the resisting connection between the resisting plate and the pressure block improves the resisting support effect on the position of the pressure block in the connecting groove. Through the action of the rotating rod and the fixed groove, under the action of the supporting spring, the rotating rod is rotated to change the position of the pressure block in the connecting groove, so that the pressure block and the connecting shell are separated, thereby achieving the operational effect of separating the connecting shell from the shield tail shell. In addition, under the resisting contact between the pressure block and the fixed groove, mud is prevented from seeping into the connection gap between the rotating rod and the shield tail shell, thereby improving its use effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is the engineering drawing of the utility model;

[0014] Figure 2 It is a schematic diagram of the structure of the utility model;

[0015] Figure 3 It is a partially cutaway perspective diagram of the structure of the present invention;

[0016] Figure 4 For this utility model Figure 3 Schematic diagram of the enlarged structure at A in the middle;

[0017] Figure 5 This is a partial three-dimensional cross-sectional schematic diagram of the structure of the shield tail shell of the utility model;

[0018] Figure 6 This is a partial exploded schematic diagram of the structure of the connecting shell of the utility model.

[0019] In the figure: 1. Shield tail shell; 2. Connecting shell; 21. Slot; 22. Insert block; 3. Fixing slot; 4. Connecting slot; 5. Card slot; 6. Limiting slot; 7. Retaining spring; 8. Retaining plate; 9. Pressing block; 10. Turning rod; 11. Turning handle; 12. Support spring. DETAILED DESCRIPTION

[0020] See also Figure 1-6 , an embodiment provided by the utility model:

[0021] A shell-detachable shield tail structure, including a shield tail shell 1 and a connecting shell 2, the connecting shell 2 is sleeved on the outer surface of the shield tail shell 1, the surface of the shield tail shell 1 is provided with a fixing groove 3, the contact side of the connecting shell 2 and the shield tail shell 1 is provided with a connecting groove 4 and a clamping groove 5, the inner wall of the clamping groove 5 is provided with a limiting groove 6 on both sides, the inner wall of the connecting groove 4 is provided with a circular groove, and the inner side of the circular groove is fixedly connected with a spring 7, the surface of the spring 7 is fixedly connected with a plate 8, the inner side of the connecting shell 2 is plugged with a rotating rod 10, and the surface of the rotating rod 10 is fixedly connected with a The pressure block 9 and the end of the rotating rod 10 away from the pressure block 9 are fixedly connected to the rotating handle 11, and the surface of the rotating handle 11 is fixedly connected to the support spring 12. One end of the connecting shell 2 is fixedly connected to the plug block 22, and the other end of the connecting shell 2 is provided with a slot 21. Through the connection between the shield tail shell 1 and the connecting shell 2, under the action of the connecting shell 2, the protection of the outside of the shield tail shell 1 is completed. Through the connection of the rotating rod 10 and the pressure block 9, under the abutment connection of the pressure block 9 and the connecting groove 4, the connection support effect of the connecting shell 2 on the shield tail shell 1 is achieved.

[0022] Furthermore, the connecting shells 2 are distributed in four groups on the outer surface of the shield tail shell 1. The connecting shells 2 are spliced ​​together through slots 21 and plug-ins 22. The connecting shells 2 form a circular ring shape. Through the connection between the connecting shells 2 and the slots 21, the connection between the connecting shells 2 and the plug-in blocks 22, and the plug-in blocks 22 and the slots 21, the splicing effect between the connecting shells 2 is achieved.

[0023] Furthermore, the diameter of the connecting groove 4 is larger than the diameter of the card slot 5, and the limiting grooves 6 are distributed in two opposite groups on the inner side of the card slot 5. Through the connection between the connecting groove 4 and the connecting shell 2, and under the connection between the connecting shell 2 and the card slot 5, the limiting grooves 6 facilitate the entry of the pressure block 9 into the connecting groove 4. Under the action of the connecting groove 4, the support operation of the position of the pressure block 9 in the connecting shell 2 is completed.

[0024] Furthermore, the shape of the fixing groove 3 is consistent with the shape of the pressing block 9, the size of the fixing groove 3 is larger than the size of the pressing block 9, and the abutment plate 8 is disc-shaped. Through the connection between the fixing groove 3 and the shield tail shell 1, the pressing block 9 and the fixing groove 3 are abutted and embedded, thereby achieving the sealing operation of the contact gap between the shield tail shell 1 and the rotating rod 10, thereby preventing mud from seeping into the interior of the shield tail shell 1 from the connection gap.

[0025] Furthermore, the push plate 8 is elastically connected to the connecting groove 4 through the push spring 7, and the push plate 8 is in contact with the pressure block 9 through the push spring 7. The rotating rod 10 is cylindrical in shape. Through the connection between the push plate 8 and the push spring 7, under the action of the push spring 7, the push support operation of the position of the pressure block 9 in the connecting groove 4 is completed, thereby improving the tightness of the push between the pressure block 9 and the connecting groove 4.

[0026] Furthermore, the support spring 12 is fixedly connected to one end away from the turning handle 11 with a circular ring-shaped piece. The support spring 12 is sleeved on the outer surface of the turning rod 10. The turning rod 10 is elastically slidably connected to the shield tail shell 1 through the support spring 12. Through the abutment contact between the support spring 12 and the turning handle 11, under the action of the support spring 12, the elastic sliding effect of the turning rod 10 in the shield tail shell 1 is achieved, thereby improving the contact tightness performance between the pressure block 9 and the fixed groove 3.

[0027] Working principle: When the connecting shell 2 is installed and used, the connecting shell 2 is sleeved on the outside of the shield tail shell 1. The pressing block 9 enters the card slot 5 through the connection between the rotating rod 10 and the shield tail shell 1. The pressing block 9 enters the inside of the connecting groove 4 through the card slot 5. Then the pressing block 9 is rotated to complete the connection and support operation of the connecting shell 2 on the shield tail shell 1 by the rotating rod 10. When there is slurry agglomeration outside the connecting shell 2, the rotating rod 10 is rotated to make the pressing block 9 and the card slot 5 overlap. At this time, the pressing block 9 and the card slot 5 are separated, and the pressing block 9 and the fixed groove 3 are embedded and abutted, completing the separation operation between the connecting shell 2 and the shield tail shell 1, achieving the effect of separation. The detached connecting shell 2 can be left inside the tunnel.

Claims

1. A shell-removing tail shield structure, comprising a tail shield shell and a connecting shell, characterized in that: The connecting shell is sleeved on the outer surface of the shield tail shell, and a fixing groove is provided on the surface of the shield tail shell. A connecting groove and a clamping groove are provided on the contact surface of the connecting shell and the shield tail shell. Limiting grooves are provided on both sides of the inner wall of the clamping groove. A circular groove is provided on the inner wall of the connecting groove, and a resistance spring is fixedly connected to the inner side of the circular groove. The surface of the resistance spring is fixedly connected to a resistance plate. A rotating rod is inserted into the inner side of the connecting shell, and a pressure block is fixedly connected to the surface of the rotating rod. The end of the rotating rod away from the pressure block is fixedly connected to a rotating handle, and the surface of the rotating handle is fixedly connected to a supporting spring. One end of the connecting shell is fixedly connected to the plug, and the other end of the connecting shell is provided with a slot.

2. The shell-removing tail shield structure according to claim 1, characterized in that: The connection shells are distributed in four groups on the outer surface of the shield tail shell. The connection shells are spliced ​​by slots and plug-in blocks, and the connection shells form a circular ring shape.

3. The shell-removing tail shield structure according to claim 1, characterized in that: The diameter of the connecting groove is larger than the diameter of the clamping groove, and the limiting grooves are distributed in two opposite groups on the inner side of the clamping groove.

4. The shell-removing tail shield structure according to claim 1, characterized in that: The shape of the fixing groove is consistent with that of the pressing block, the size of the fixing groove is larger than that of the pressing block, and the abutment plate is in a disc shape.

5. The shell-removing tail shield structure according to claim 1, characterized in that: The support plate is elastically connected to the connecting groove via a support spring, the support plate is in contact with the pressing block via the support spring, and the rotating rod is cylindrical in shape.

6. The shell-removing tail shield structure according to claim 1, characterized in that: The support spring is fixedly connected to an end of the rotating handle away from the rotating handle with a circular ring-shaped shape. The support spring is sleeved on the outer surface of the rotating rod. The rotating rod is elastically slidably connected to the shield tail shell through the support spring.

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