CN215332853U

CN215332853U - Special rock push bench for small-sized pipeline

Info

Publication number: CN215332853U
Application number: CN202120674908.6U
Authority: CN
Inventors: 凌锋; 黄雄
Original assignee: Hunan Hedun Geotechnical Engineering Equipment Co ltd
Current assignee: Hunan Hedun Geotechnical Engineering Equipment Co ltd
Priority date: 2021-04-02
Filing date: 2021-04-02
Publication date: 2021-12-28
Anticipated expiration: 2031-04-02

Abstract

The utility model relates to the technical field of tunnel pipe jacking, and discloses a special rock pipe jacking machine for a small pipeline, which comprises a pipe body and a cutter head, wherein an electric cabinet is arranged on the right side wall of the top of the pipe body, a motor is fixed on the right side inside the pipe body, a speed reducer is arranged on the left side of the motor, a main shaft is arranged at the output end of the speed reducer, flat cutter rests are fixed between main partition plates on two sides of a first double-edged hob, inclined cutter rests are fixed between auxiliary partition plates on two sides of a second double-edged hob, and pin shafts are inserted in the middles of the first double-edged hob and the second double-edged hob. The utility model not only adopts five double-edged hobs to form a comprehensive hobbing structure to efficiently crush the rock, thereby improving the tunneling efficiency of the pipeline with the diameter of less than 0.8 m, but also is provided with a plurality of groups of internal and external shock absorption strengthening structures, thereby ensuring the stability of the pipe jacking machine in operation, being convenient for collecting and flushing rock and soil fragments, and improving the pollution discharge efficiency.

Description

Special rock push bench for small-sized pipeline

Technical Field

The utility model relates to the technical field of tunnel pipe jacking, in particular to a rock pipe jacking machine special for a small-sized pipeline.

Background

The pipe jacking machine has the advantages of high mechanization degree, high construction speed, high safety and the like, and is widely applied to tunnel excavation of urban sewage pipelines, hydropower and other heavy projects. The pipe jacking cutter is used as a key part of the shield machine, and the performance of the pipe jacking cutter directly influences the tunneling efficiency and the tunneling cost of the whole project.

The cutter for cutting the rock of the jacking pipe is a hob, when the cutter works, a hob ring penetrates into the rock face under the action of thrust, a high-stress crushing area is generated at the cutter point, cracks are further expanded along with the continuous rolling of the hob ring on the face, and the rock can be peeled off from the face in the form of stone slag, so that the rock is crushed.

At present, the applicable excavation diameter of the conventional rock pipe jacking machine is generally 0.8-3 meters, and the pipeline with the diameter of less than 0.8 meter can only be excavated manually, so that the problems of low construction efficiency, slow progress, high cost and the like exist; in addition, with the reduction of the specification of the push bench, the self weight and the structural strength of the push bench are correspondingly reduced, so that the load performance of the push bench is insufficient, and abnormal shaking or blockage and other conditions can occur in the operation process; in addition, due to the small diameter of the excavation diameter, conventional external blowdown methods are not applicable, requiring redesign of blowdown lines. Therefore, the person skilled in the art provides a rock push bench dedicated for small pipelines to solve the problems mentioned in the background art.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a rock push bench special for a small pipeline, which aims to solve the problems in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme:

a special rock pipe jacking machine for small pipelines comprises a pipe body and a cutter head, wherein an electric cabinet is arranged on the right side wall of the top of the pipe body, a motor is fixed on the right side of the inside of the pipe body, a rotating shaft is installed at the output end of the motor through a shaft coupling, a speed reducer is arranged on the left side of the motor, the left end of the rotating shaft horizontally extends to the input end of the speed reducer, a main shaft is installed at the output end of the speed reducer, the left side of the main shaft is sleeved with the cutter head, the left side of the cutter head axially extends to the outer side of the pipe body, two main partition plates are symmetrically welded inside the cutter head, three first double-edge cutters are arranged between the main partition plates, flat cutter holders are fixed between the main partition plates on two sides of the first double-edge cutters, two auxiliary partition plates are symmetrically welded inside the cutter head on one side of each other, and a second double-edge cutter is arranged between the auxiliary partition plates, the double-edged hob is characterized in that inclined cutter holders are fixed between the auxiliary partition plates on two sides of the second double-edged hob, pin shafts are inserted into the middle portions of the first double-edged hob and the second double-edged hob, clamping plates are embedded into one sides of the middle portions of the flat cutter holders and the inclined cutter holders, and two ends of each pin shaft are embedded into one side of the corresponding clamping plate.

As a still further scheme of the utility model: the motor is left the body internal portion is fixed with first support, two hydro-cylinders about horizontal installation has on the lateral wall at speed reducer middle part, just the output of hydro-cylinder all with the left side wall of first support is articulated each other.

As a still further scheme of the utility model: the outer side wall of the pipe body at the positions of the first support and the second support is provided with annular sinking grooves, and rib plates are welded in the annular sinking grooves at equal angles.

As a still further scheme of the utility model: and a second support is fixed inside the tube body outside the main shaft, and the middle part of the main shaft is rotatably connected with the second support through a bearing.

As a still further scheme of the utility model: the cutter head outside the body is inside to be provided with annular through groove, just annular through groove with the outside of body communicates each other, the annular leads to the groove right side the body is inside to be provided with the soil storehouse, just the soil storehouse with the right side that the annular led to the groove communicates each other.

As a still further scheme of the utility model: the front side and the rear side of the bottom of the soil bin are respectively communicated with a water inlet pipe and a sewage discharge pipe, and the water inlet pipe and the right end of the sewage discharge pipe horizontally extend to the right side of the pipe body.

As a still further scheme of the utility model: the outer side wall of the cutter head is welded with reinforcing ribs at equal angles.

As a still further scheme of the utility model: the main partition board with all vertical distribution between the vice partition board, just the main partition board with between the vice partition board the lateral wall of blade disc all is open structure.

Compared with the prior art, the utility model has the beneficial effects that:

1. the rotating shaft is driven by the motor to rotate at a high speed, and then the main shaft is driven by the speed reducer to output stably at a low speed, so that the cutter head integrally rotates at a constant speed for tunneling, in the process, as the two ends of the pin shaft are embedded and fixed on one side of the clamping plate, a comprehensive rolling and cutting structure is formed by three first double-edged hobs horizontally arranged and two second double-edged hobs obliquely arranged, the rock is crushed efficiently and tidily, and the tunneling efficiency of pipelines with the diameter of less than 0.8 m is improved;

2. the outer side walls of the pipe body and the cutter head are respectively welded with a plurality of rib plates and reinforcing ribs for enhancing the tensile property, so that the stability of the pipe jacking machine during operation is ensured;

3. through set up open slot between main baffle, vice baffle, during the ground fragment gets into the soil storehouse via annular logical groove, injects the water under high pressure by the inlet tube again and washes, then discharges via the blow off pipe to the blowdown efficiency has been improved.

Drawings

FIG. 1 is a schematic perspective view of a rock push bench for small pipelines;

FIG. 2 is a schematic view of a top-view cross-sectional structure of a rock push bench for a small pipeline;

FIG. 3 is a schematic view of a rock push bench for a small pipeline;

FIG. 4 is a left side view schematic structural diagram of a rock push bench for a small pipeline;

fig. 5 is a schematic diagram of a right-view structure of a rock pipe jacking machine special for a small pipeline.

In the figure: 1. a pipe body; 2. an electric cabinet; 3. a motor; 4. a rotating shaft; 5. a speed reducer; 6. a first bracket; 7. an oil cylinder; 8. a main shaft; 9. a bearing; 10. a second bracket; 11. an annular through groove; 12. a soil bin; 13. a water inlet pipe; 14. a blow-off pipe; 15. an annular sinking groove; 16. a rib plate; 17. a cutter head; 18. reinforcing ribs; 19. a main partition plate; 20. a first double-edged hob; 21. a flat tool rest; 22. a secondary partition plate; 23. a second double-edged hob; 24. a tilting tool holder; 25. a splint; 26. and (7) a pin shaft.

Detailed Description

Referring to fig. 1 to 5, in the embodiment of the present invention, a special rock push bench for small pipelines includes a pipe body 1 and a cutter head 17, an electric cabinet 2 is installed on the right side wall of the top of the pipe body 1, a motor 3 is fixed on the right side inside the pipe body 1, the model of the motor 3 can be Y112M-2, a rotating shaft 4 is installed at the output end of the motor 3 through a coupling, a speed reducer 5 is installed at the left side of the motor 3, the left end of the rotating shaft 4 horizontally extends to the input end of the speed reducer 5, a main shaft 8 is installed at the output end of the speed reducer 5, the cutter head 17 is sleeved on the left side of the main shaft 8, the left side of the cutter head 17 axially extends to the outside of the pipe body 1, two main partition plates 19 are symmetrically welded inside the cutter head 17, three first double-edged cutters 20 are arranged between the main partition plates 19, a flat cutter frame 21 is fixed between the main partition plates 19 at both sides of the first double-edged cutters 20, two auxiliary partition plates 22 are symmetrically welded inside the cutter head 17 at one side of the main partition plates 19, and all be provided with a second twolip hobbing cutter 23 between the vice baffle 22, all be fixed with oblique cutter frame 24 between the vice baffle 22 of second twolip hobbing cutter 23 both sides, the middle part of first twolip hobbing cutter 20 and second twolip hobbing cutter 23 all is inserted with round pin axle 26, one side in the middle part of flat cutter frame 21 and oblique cutter frame 24 all inlays splint 25, and the both ends of round pin axle 26 all inlay in one side of corresponding splint 25.

In fig. 2 and 4: a first support 6 is fixed inside the pipe body 1 on the left side of the motor 3, an upper oil cylinder 7 and a lower oil cylinder 7 are horizontally arranged on the outer side wall of the middle part of the speed reducer 5, and the output ends of the oil cylinders 7 are hinged with the left side wall of the first support 6 and used for buffering and shock absorption; annular sinking grooves 15 are formed in the outer side walls of the pipe body 1 at the positions of the first support 6 and the second support 10, and rib plates 16 are welded in the annular sinking grooves 15 at equal angles and used for enhancing the tensile property of the pipe body 1; a second support 10 is fixed inside the pipe body 1 on the outer side of the main shaft 8, and the middle part of the main shaft 8 is rotatably connected with the second support 10 through a bearing 9 and used for reducing the rotating friction and improving the axial load capacity; the outer side wall of the cutter head 17 is welded with reinforcing ribs 18 at equal angles for enhancing the tensile property of the cutter head 17.

In fig. 1, 2 and 5: an annular through groove 11 is formed in the pipe body 1 on the outer side of the cutter head 17, the annular through groove 11 is communicated with the outside of the pipe body 1, a soil bin 12 is arranged in the pipe body 1 on the right side of the annular through groove 11, and the soil bin 12 is communicated with the right side of the annular through groove 11, so that rock and soil fragments can be collected conveniently; the front side and the rear side of the bottom of the soil bin 12 are respectively communicated with a water inlet pipe 13 and a sewage discharge pipe 14, and the right ends of the water inlet pipe 13 and the sewage discharge pipe 14 horizontally extend to the right side of the pipe body 1, so that internal washing and sewage discharge are facilitated; the main partition plate 19 and the auxiliary partition plate 22 are vertically distributed, and the outer side wall of the cutter head 17 between the main partition plate 19 and the auxiliary partition plate 22 is of an open structure, so that rock and soil fragments can be conveniently discharged.

The working principle of the utility model is as follows: firstly, the pipe jacking machine is integrally arranged on a matched thrust frame and is used for pushing the pipe jacking machine to integrally translate at a constant speed, in the process, a rotating shaft 4 is driven to rotate at a high speed through a motor 3 under the control of an electric cabinet 2, and then a main shaft 8 is driven to stably output at a low speed through a speed reducer 5, so that a cutterhead 17 is integrally driven to rotate at a constant speed for tunneling, meanwhile, two ends of a pin shaft 26 are embedded and fixed on one side of a clamping plate 25, a comprehensive hobbing structure is formed by three horizontally arranged first double-edged hobbing cutters 20 and two obliquely arranged second double-edged hobbing cutters 23, rocks are efficiently and tidily rotated and crushed, and the tunneling efficiency of pipelines with the diameter of less than 0.8 m is improved;

in addition, an upper oil cylinder 7 and a lower oil cylinder 7 are horizontally arranged on the outer side wall of the speed reducer 5, the output end of the speed reducer is hinged with the first support 6 for automatic axial adjustment and buffering and shock absorption, the middle part of the main shaft 8 is rotatably connected with the second support 10 through a bearing 9 for reducing the rotating friction and improving the axial load capacity, and a plurality of ribbed plates 16 and reinforcing ribs 18 are welded on the outer side walls of the pipe body 1 and the cutter head 17 at equal angles respectively for enhancing the tensile property, so that the stability of the pipe jacking machine in operation is ensured;

in addition, the open type groove is formed between the main partition plate 19 and the auxiliary partition plate 22, so that rock and soil fragments can be conveniently discharged outwards, enter the soil bin 12 through the annular through groove 11, are injected with high-pressure water through the water inlet pipe 13 to wash the interior of the soil bin 12, and are discharged through the sewage discharge pipe 14, the sewage discharge efficiency is improved, and the continuity in pipeline tunneling is ensured.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention are equivalent to or changed within the technical scope of the present invention.

Claims

1. The utility model provides a dedicated rock pipe jacking machine of small-size pipeline, includes body (1) and blade disc (17), its characterized in that, the right side wall mounting at body (1) top has electric cabinet (2), the inside right side of body (1) is fixed with motor (3), just pivot (4) are installed through the shaft coupling to the output of motor (3), the left side of motor (3) is provided with speed reducer (5), just the left end level of pivot (4) extends to the input of speed reducer (5), main shaft (8) are installed to the output of speed reducer (5), just the left side cover of main shaft (8) is equipped with blade disc (17) to the left side axial extension of blade disc (17) extends to the outside of body (1), the inside symmetric welding of blade disc (17) has two main baffle (19), just be provided with three first twolip hobbing cutter (20) between main baffle (19), first twolip hobbing cutter (20) both sides all be fixed with flat knife rest (21) between main baffle (19), main baffle (19) one side cutter head (17) inside all symmetrical welding have two vice baffles (22), just all be provided with a second twolip hobbing cutter (23) between vice baffle (22), second twolip hobbing cutter (23) both sides all be fixed with oblique knife rest (24) between vice baffle (22), first twolip hobbing cutter (20) with the middle part of second twolip hobbing cutter (23) has all been installed and has been sold round pin axle (26), flat knife rest (21) with one side at oblique knife rest (24) middle part all inlays and has splint (25), just the both ends of round pin axle (26) all inlay in corresponding one side of splint (25).

2. The special rock pipe jacking machine for small pipelines according to claim 1, wherein a first support (6) is fixed inside the pipe body (1) on the left side of the motor (3), an upper oil cylinder and a lower oil cylinder (7) are horizontally installed on the outer side wall of the middle part of the speed reducer (5), and the output ends of the oil cylinders (7) are hinged with the left side wall of the first support (6).

3. The rock pipe jacking machine special for small pipelines according to claim 2, wherein a second bracket (10) is fixed inside the pipe body (1) outside the main shaft (8), and the middle part of the main shaft (8) is rotatably connected with the second bracket (10) through a bearing (9).

4. The rock pipe jacking machine special for small pipelines according to claim 3, wherein the outer side walls of the pipe body (1) at the positions of the first bracket (6) and the second bracket (10) are provided with annular sinking grooves (15), and rib plates (16) are welded in the annular sinking grooves (15) at equal angles.

5. The special rock pipe jacking machine for small pipelines according to claim 1, wherein an annular through groove (11) is formed inside the pipe body (1) outside the cutter head (17), the annular through groove (11) is communicated with the outside of the pipe body (1), a soil bin (12) is formed inside the pipe body (1) on the right side of the annular through groove (11), and the soil bin (12) is communicated with the right side of the annular through groove (11).

6. The special rock pipe jacking machine for small pipelines according to claim 5, wherein the front side and the rear side of the bottom of the soil bin (12) are respectively communicated with a water inlet pipe (13) and a sewage discharge pipe (14), and the right ends of the water inlet pipe (13) and the sewage discharge pipe (14) horizontally extend to the right side of the pipe body (1).

7. The rock pipe jacking machine special for small pipelines according to claim 1, wherein the outer side wall of the cutterhead (17) is welded with reinforcing ribs (18) at equal angles.

8. The rock pipe jacking machine special for small pipelines according to claim 1, wherein the main partition (19) and the auxiliary partition (22) are vertically distributed, and the outer side walls of the cutterhead (17) between the main partition (19) and the auxiliary partition (22) are all in an open structure.