Soft soil cutter head with L-shaped rotary support

Abstract

The utility model relates to a soft soil cutter head with an L-shaped rotary support. The soft soil cutter head comprises a cutter head body, an L-shaped rotary support assembly and a rotary joint assembly, a flushing pipeline and a nozzle are arranged on the cutter head body, the nozzle is connected with the flushing pipeline, and the nozzle faces the cutter on the cutter head body. The L-shaped rotary supporting assembly and the rotary connector assembly are both arranged on one side of the back face of the cutter head body, one end of the L-shaped rotary supporting assembly is connected with the cutter head body, and the other end of the L-shaped rotary supporting assembly is connected with the rotary connector assembly. A flushing water pipe is arranged in the L-shaped rotary supporting assembly, one end of the flushing water pipe communicates with the flushing pipeline, and the other end of the flushing water pipe is connected with the rotary connector assembly. A flushing opening communicated with the flushing water pipe is formed in the rotary connector assembly. The L-shaped rotary supporting assembly is independently matched with the soft soil cutterhead to be used for installing all pipelines in the cutterhead body, so that pipelines are prevented from being installed in flange supporting legs, and the pipelines and accessories of the pipelines are more convenient to maintain and replace.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of excavation equipment, especially to a soft soil cutter head with L-shaped rotary support. BACKGROUND

[0002] The circular spoke cutter head is widely used in tunnel excavation equipment with soft and loose geology. Generally, in the extremely strong viscous geology, the pipe blockage of the soft soil cutter head will cause the risk of mud cake in the center of the cutter head, which greatly affects the spoil improvement system of the tunneling machine equipment and the overall construction efficiency. At the same time, in the soft geological conditions, there is a risk of collapse in the hole, and the working face is not convenient for manual excavation and expansion construction, which greatly affects the equipment hole disassembly construction. Therefore, the pipe layout, maintenance and non-destructive hole disassembly of the soft soil cutter head have been a big problem in the field of excavation equipment that needs to be solved urgently. At present, the water outlet pipe of the rotary joint of the soft soil circular spoke cutter head is through the transition block on the partition plate inside the cutter head flange, enters the inside of the cutter head center cylinder along the inside of the support leg, and then is divided into the nozzle points of each circular spoke. The pipe inside the support leg is usually protected by a pipe cover plate. In the case of poor geology, when the pipe cover plate is damaged and the pipe is blocked, the pipe is not convenient to maintain and dredge. SUMMARY

[0003] (I) Technical problem to be solved

[0004] The utility model provides a kind of soft soil cutter head with L-shaped rotary support, to solve the problem of soft soil cutter head pipe that is not convenient to maintain and dredge in prior art.

[0005] (II) Technical scheme

[0006] To solve the above problems, the utility model provides a kind of soft soil cutter head with L-shaped rotary support, the soft soil cutter head with L-shaped rotary support includes cutter head body, L-shaped rotary support assembly and rotary joint assembly;

[0007] The cutter head body is provided with flushing pipeline and nozzle, the nozzle is connected with the flushing pipeline, and the nozzle is towards the cutter on the cutter head body;

[0008] The L-shaped rotary support assembly and the rotary joint assembly are both arranged on the back side of the cutter head body, one end of the L-shaped rotary support assembly is connected with the cutter head body, and the other end of the L-shaped rotary support assembly is connected with the rotary joint assembly;

[0009] The L-shaped rotary support assembly is provided with a flushing water pipe, one end of the flushing water pipe is communicated with the flushing pipe, and the other end of the flushing water pipe is connected with the rotary joint assembly; the rotary joint assembly is provided with a flushing opening communicated with the flushing water pipe.

[0010] Preferably, the rotary joint assembly comprises a spring support structure, the spring support structure comprises a fixed support, a guide support and a buffer spring.

[0011] The fixed support is used for fixedly installing in the shield tunneling machine, the fixed support is provided with a guide groove, the guide support is connected with the rotary joint assembly, and the guide support is provided with a guide rod, the guide rod is slidingly installed in the guide groove, and the guide rod can move in the length direction of the guide rod in the guide groove.

[0012] One end of the buffer spring is abutted with the fixed support, the other end of the buffer spring is abutted with the guide support, and the extension direction of the buffer spring is consistent with the length direction of the guide rod.

[0013] Preferably, the rotary joint assembly further comprises a rotary joint shell and a mandrel.

[0014] The mandrel is rotatably installed in the rotary joint shell, the mandrel is provided with a water inlet channel in the axial direction, and the outer wall of the mandrel is provided with an annular water inlet groove communicated with the water inlet channel in the circumferential direction; one end of the mandrel is connected with the L-shaped rotary support assembly, and the water inlet channel is communicated with the flushing water pipe.

[0015] The rotary joint shell is provided with the flushing opening and the guide support, and the flushing opening is communicated with the annular water inlet groove.

[0016] Preferably, the rotary joint shell is further provided with a force transfer block rotatably, and the force transfer block is located between the mandrel and the L-shaped rotary support assembly.

[0017] One side of the force transfer block is fixedly connected with the L-shaped rotary support assembly, the other side of the force transfer block is fixedly connected with the mandrel, and the force transfer block is provided with a channel for communicating the water inlet channel and the flushing water pipe.

[0018] Preferably, the L-shaped rotary support assembly is further provided with an electric wire, one end of the electric wire is used for being connected with a sensor on the cutter head body; the force transfer block and the mandrel are both provided with a signal channel for the other end of the electric wire to pass through.

[0019] Preferably, the L-shaped rotary support assembly comprises a rotary support shell, the flush water pipes are arranged in the rotary support shell, one end of the rotary support shell is provided with a pipeline base, the pipeline base is provided with water outlet pipes corresponding to the flush water pipes, one end of the water outlet pipes is connected with the flush water pipes, and the other end of the water outlet pipes is connected with the flush pipes.

[0020] Preferably, the rotary support shell is provided with an inspection hole.

[0021] Preferably, the cutter body comprises upper edge blocks, lower edge blocks, left edge blocks, right edge blocks and a middle block; the upper edge blocks, the lower edge blocks, the left edge blocks and the right edge blocks are arranged in an annular array on the middle block.

[0022] Preferably, the back side of the middle block is provided with an observation hole.

[0023] Preferably, the middle block is provided with a flange leg.

[0024] (Three) beneficial effects

[0025] The utility model discloses a soft soil cutter head independently matched with an L-shaped rotary support assembly to install all pipelines in the cutter body, avoiding the installation of pipelines in the flange leg, so that the pipelines and accessories can be more conveniently maintained and replaced. DRAWINGS

[0026] Figure 1 It is a structural schematic view of the soft soil cutter head of the utility model;

[0027] Figure 2 It is a sectional view of A-A in the utility model; Figure 1

[0028] Figure 3 It is a sectional view of A-A in the utility model; Figure 2 It is a local enlarged view of the rotary joint assembly;

[0029] Figure 4 It is a local enlarged view of the L-shaped rotary support assembly; Figure 2

[0030] Figure 5 It is an exploded view of the soft soil cutter head of the utility model.

[0031]

Explanation of reference signs

[0032] 1: cutter body; 10: flush pipe; 11: upper edge block; 12: lower edge block; 13: left edge block; 14: right edge block; 15: middle block; 16: observation hole; 17: flange leg;

[0033] ​​2: L-shaped rotary support assembly; 21: flush water pipe; 22: electric wire; 23: rotary support shell; 24: pipeline base; 25: water outlet pipe; 26: manhole;

[0034] 3: rotary joint assembly; 31: flush port; 32: spring support structure; 321: fixed support; 322: guide support; 323: buffer spring; 33: rotary joint shell; 34: mandrel; 341: water inlet channel; 342: annular water inlet groove; 35: force transmission block. DETAILED DESCRIPTION

[0035] In order to better explain the utility model, so as to understand, the following combining with the drawings, through specific embodiment, the utility model is described in detail.

[0036] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the utility model are only used to explain the relative position relationship, movement condition, etc. between components in a certain specific posture (as shown in the drawings), and if the specific posture changes, the directional indications will also change accordingly.

[0037] In addition, in the utility model, the description such as "first", "second" and the like is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In the description of the utility model, the meaning of "multiple" is at least two, such as two, three, etc. unless otherwise specifically limited.

[0038] In the utility model, unless otherwise specifically defined and limited, the terms "connection", "fixing" and the like should be understood broadly, for example, "fixing" can be fixed connection, or detachable connection, or integral; can be mechanical connection, or electrical connection; can be directly connected, or indirectly connected through intermediate medium; can be the internal communication of two elements or the interaction relationship of two elements, unless otherwise specifically limited. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0039] The utility model provides a kind of soft soil cutterhead with L-shaped rotary support, soft soil cutterhead with L-shaped rotary support includes cutterhead body 1, L-shaped rotary support assembly 2 and rotary joint assembly 3.Cutterhead body 1 is provided with flush pipeline 10 and nozzle, nozzle is connected with flush pipeline 10, and nozzle is towards the cutter on cutterhead body 1.L-shaped rotary support assembly 2 and rotary joint assembly 3 are all arranged in the back side of cutterhead body 1, one end of L-shaped rotary support assembly 2 is connected with cutterhead body 1, the other end of L-shaped rotary support assembly 2 is connected with rotary joint assembly 3.L-shaped rotary support assembly 2 is provided with flush water pipe 21, one end of flush water pipe 21 is communicated with flush pipeline 10, the other end of flush water pipe 21 is connected with rotary joint assembly 3;Rotary joint assembly 3 is provided with flush port 31 communicated with flush water pipe 21.The L-shaped of the L-shaped rotary support assembly in the application refers to, two ends of L-shaped rotary support assembly 2 are not on the same horizontal plane, i.e.

[0040] The utility model is soft soil cutterhead alone and is matched with L-shaped rotary support assembly 2 to install all pipes inside cutterhead body 1, avoid installing pipe in flange branch leg 17, so it can be more convenient maintenance, replace pipe and its accessory.

[0041] Further, rotary joint assembly 3 includes spring support structure 32, and the spring support structure 32 includes: fixed bracket 321, guide bracket 322 and buffer spring 323.The fixed bracket 321 is used for fixedly installed in shield machine, the fixed bracket 321 is provided with guide groove, the guide bracket 322 is connected with rotary joint assembly 3, and the guide bracket 322 is provided with guide rod, the guide rod is slidably installed in the guide groove, and the guide rod can move in the guide groove along its own length direction.The one end of buffer spring 323 is abutted with the fixed bracket 321, the other end of buffer spring 323 is abutted with the guide bracket 322, and the expansion direction of buffer spring 323 is consistent with the length direction of guide rod, when rotary joint assembly 3 generates vibration, the vibration of rotary structure assembly will be converted into the movement of guide rod in guide groove, and then be absorbed by buffer spring 323, and be converted into elastic potential energy.

[0042] In the use process of soft soil cutterhead, L-shaped rotary support assembly 2 will rotate with cutterhead body 1, and rotary joint assembly 3 is not rotated as a whole (core shaft 34 is rotatably arranged in rotary joint assembly 3, and the core shaft 34 is connected with L-shaped rotary support assembly 2), therefore, vibration will be generated on rotary joint assembly 3, in the embodiment, spring support structure 32 is used to support rotary joint assembly 3, and vibration is absorbed by spring, so that the failure rate of rotary joint assembly 3 can be effectively reduced.

[0043] Further, the swivel joint assembly 3 further comprises a swivel joint housing 33 and a mandrel 34. The mandrel 34 is rotatably installed in the swivel joint housing 33, the mandrel 34 is provided with a water inlet channel 341 in the axial direction, and the outer wall of the mandrel 34 is provided with an annular water inlet groove 342 in the circumferential direction, which is in communication with the water inlet channel 341; one end of the mandrel 34 is connected with the L-shaped swivel support assembly 2, and the water inlet channel 341 is in communication with the flushing water pipe 21. The swivel joint housing 33 is provided with a flushing port 31 and a guide bracket 322, and the flushing port 31 is in communication with the annular water inlet groove 342. In the embodiment, bearings are provided on the mandrel 34 for rotation in the swivel joint housing 33, in addition, a dynamic sealing structure is provided between the swivel joint housing 33 and the mandrel 34, the water inlet channel 341 and the annular water inlet groove 342 are provided on the mandrel 34, and the water inlet port is provided on the housing to communicate with the annular water inlet groove 342, which facilitates the external high-pressure water to be supplied to the flushing water pipe 21 through the water inlet channel 341 and the annular water inlet groove 342, and then the nozzle on the cutter head body 1 sprays water flow to the cutter.

[0044] In a preferred embodiment, the swivel joint housing 33 is further rotatably provided with a force transfer block 35, which is located between the mandrel 34 and the L-shaped swivel support assembly 2. One side of the force transfer block 35 is fixedly connected with the L-shaped swivel support assembly, the other side of the force transfer block 35 is fixedly connected with the mandrel 34, and the force transfer block 35 is provided with a channel for communicating the water inlet channel 341 and the flushing water pipe 21. The force transfer block 35 is provided between the mandrel 34 and the L-shaped swivel support assembly 2, which facilitates the connection of the mandrel 34 and the L-shaped swivel support assembly 2.

[0045] The L-shaped swivel support assembly 2 is further provided with an electric wire 22, one end of the electric wire 22 is used for connecting with a sensor on the cutter head body 1, specifically, the electric wire 22 can be connected with a cutter wear detection device on the cutter head body 1 for detecting the wear amount of the cutter; the force transfer block 35 and the mandrel 34 are both provided with a signal hole for the other end of the electric wire 22 to pass through.

[0046] On the other hand, the L-shaped swivel support assembly 2 comprises a swivel support housing 23, the flushing water pipe 21 is arranged in the swivel support housing 23, one end of the swivel support housing 23 is provided with a pipe base 24, the pipe base 24 is provided with a water outlet channel 25 corresponding to the flushing water pipe 21, one end of the water outlet channel 25 is connected with the flushing water pipe 21, and the other end of the water outlet channel 25 is connected with the flushing pipe 10.

[0047] The swivel support housing 23 is provided with an access hole 26. The flushing water pipe 21 and the electric wire 22 can be better maintained and replaced, and the risk of opening mud cake caused by pipe blockage is reduced.

[0048] Finally, the cutter head body 1 comprises an upper edge block 11, a lower edge block 12, a left edge block 13, a right edge block 14 and a middle block 15; the upper edge block 11, the lower edge block 12, the left edge block 13 and the right edge block 14 are arranged in an annular array on the middle block 15. The upper edge block 11, the lower edge block 12, the left edge block 13, the right edge block 14 and the middle block 15 are welded together to form the cutter head body 1, and the cutter head is divided into five blocks, each of which can be individually transported from the inside of the shield to the outside of the hole without needing to drill a hole in the working face and cut the shield shell, and the cutter head is only needed to cut the connecting weld between the middle block 15 and the edge blocks, so that the overall structure of the cutter head is not damaged, the middle block 15 and the edge blocks are re-welded after the cutter head is taken out of the hole, the flange leg 17 assembly is bolted, and the cutter head can be used for construction of the next interval section, so that the economic benefits are maximized. The back side of the middle block 15 is provided with an observation hole 16 for checking and dredging pipelines. The middle block 15 is provided with a flange leg 17 for transmitting the torque for rotating the cutter head body 1.

[0049] It should be understood that the above description of specific embodiments of the present application is only for the purpose of illustrating the technical route and characteristics of the present application, and the purpose is to enable those skilled in the art to understand the content of the present application and implement it, but the present application is not limited to the above specific embodiments. Any changes or modifications made within the scope of the claims of the present application should be covered within the scope of protection of the present application.

Claims

1. A soft soil cutter head with L-shaped swivel support, characterized in that, The soft soil cutter head with L-shaped rotary support comprises a cutter head body (1), an L-shaped rotary support assembly (2) and a rotary joint assembly (3); The cutter head body (1) is provided with a flushing pipeline (10) and a nozzle, the nozzle is connected with the flushing pipeline (10), and the nozzle faces the cutter on the cutter head body (1); The L-shaped rotary support assembly (2) and the rotary joint assembly (3) are arranged on the back side of the cutter head body (1), one end of the L-shaped rotary support assembly (2) is connected with the cutter head body (1), and the other end of the L-shaped rotary support assembly (2) is connected with the rotary joint assembly (3); The L-shaped rotary support assembly (2) is provided with a flushing water pipe (21), one end of the flushing water pipe (21) is communicated with the flushing pipeline (10), and the other end of the flushing water pipe (21) is connected with the rotary joint assembly (3); the rotary joint assembly (3) is provided with a flushing port (31) communicated with the flushing water pipe (21).

2. The soft soil cutter with L-shaped swivel support according to claim 1, characterized in that, The rotary joint assembly (3) comprises a spring support structure (32), and the spring support structure (32) comprises a fixed support (321), a guide support (322) and a buffer spring (323); The fixed support (321) is used for being fixedly installed in a shield machine, the fixed support (321) is provided with a guide groove, the guide support (322) is connected with the rotary joint assembly (3), and the guide support (322) is provided with a guide rod, the guide rod is slidingly installed in the guide groove, and the guide rod can move in the length direction of the guide rod in the guide groove; One end of the buffer spring (323) abuts against the fixed support (321), the other end of the buffer spring (323) abuts against the guide support (322), and the extension direction of the buffer spring (323) is consistent with the length direction of the guide rod.

3. The soft soil cutter with L-shaped swivel support according to claim 2, characterized in that, The rotary joint assembly (3) further comprises a rotary joint shell (33) and a mandrel (34); The mandrel (34) is rotatably installed in the rotary joint shell (33), the mandrel (34) is provided with a water inlet channel (341) in the axial direction, and the outer wall of the mandrel (34) is provided with an annular water inlet groove (342) communicated with the water inlet channel (341) in the circumferential direction; one end of the mandrel (34) is connected with the L-shaped rotary support assembly (2), and the water inlet channel (341) is communicated with the flushing water pipe (21); The rotary joint shell (33) is provided with the flushing port (31) and the guide support (322), and the flushing port (31) is communicated with the annular water inlet groove (342).

4. The soft soil cutter with L-shaped swivel support according to claim 3, characterized in that, The rotary joint shell (33) is further provided with a force transmission block (35) rotatably arranged between the mandrel (34) and the L-shaped rotary support assembly (2); The rotary joint shell (33) is further provided with a force transmission block (35) rotatably arranged between the mandrel (34) and the L-shaped rotary support assembly (2); One side of the force block (35) is fixedly connected with the L-shaped rotary support assembly, and the other side of the force block (35) is fixedly connected with the mandrel (34), and a hole for connecting the water inlet channel (341) and the flushing water pipe (21) is arranged on the force block (35).

5. The soft soil cutter with L-shaped swivel support according to claim 4, characterized in that, The L-shaped rotary support assembly (2) is further provided with an electric wire (22), one end of the electric wire (22) is used for being connected with a sensor on the cutter head body (1), and signal holes for the other end of the electric wire (22) to pass through are arranged on the force block (35) and the mandrel (34).

6. The soft soil cutter of claim 1-5, wherein, The L-shaped rotary support assembly (2) comprises a rotary support shell (23), the flushing water pipes (21) are arranged in the rotary support shell (23), one end of the rotary support shell (23) is provided with a pipeline base (24), the pipeline base (24) is provided with water outlet channels (25) corresponding to the flushing water pipes (21), one end of the water outlet channel (25) is connected with the flushing water pipe (21), and the other end of the water outlet channel (25) is connected with the flushing pipe (10).

7. The soft soil cutter with L-shaped swivel support according to claim 6, characterized in that, The rotary support shell (23) is provided with an access hole (26).

8. The soft soil cutter of claim 1-5, wherein, The cutter head body (1) comprises an upper edge block (11), a lower edge block (12), a left edge block (13), a right edge block (14) and a middle block (15), and the upper edge block (11), the lower edge block (12), the left edge block (13) and the right edge block (14) are arranged in an annular array on the middle block (15).

9. The soft soil cutter with L-shaped swivel support according to claim 8, characterized in that, An observation hole (16) is arranged on one side of the back of the middle block (15).

10. The soft soil cutter with L-shaped swivel support according to claim 8, characterized in that, A flange leg (17) is arranged on the middle block (15).

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