CN219549436U - Main driving speed reducer of shield tunneling machine - Google Patents
Main driving speed reducer of shield tunneling machine Download PDFInfo
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- CN219549436U CN219549436U CN202320081607.1U CN202320081607U CN219549436U CN 219549436 U CN219549436 U CN 219549436U CN 202320081607 U CN202320081607 U CN 202320081607U CN 219549436 U CN219549436 U CN 219549436U
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Abstract
The utility model provides a shield machine main drive speed reducer, which comprises a shell, an input shaft penetrating through the shell and horizontally extending backwards, and a braking device, wherein the braking device comprises a power rotating disc sleeved on the input shaft and synchronously rotating with the power rotating disc, friction braking discs positioned at two sides of the power rotating disc, and a driving piece for driving the friction braking discs to change between a braking state and a non-braking state and connected with the shell.
Description
Technical Field
The utility model relates to the technical field of shield machines, in particular to a shield machine main driving speed reducer with a braking device.
Background
With the increasing of tunnel engineering at home and abroad, a shield machine is widely applied as a sharp tool for tunnel construction, a cutter head of the shield machine is a core component of the shield machine, and is usually a large-diameter heavy-duty steel structure manufacturing component, because of the limitation of manufacturing precision, the cutter head is extremely difficult to realize complete superposition of the gravity center of the cutter head and the circle center of the cutter head, so that deviation between the gravity center of the cutter head and the rotation center of the cutter head exists, the deviation is called as an eccentric distance, and because the weight of the cutter head is large (generally about 100 tons), the existence of the superposed eccentric distance generates a large rotation moment, and the rotation moment can lead the cutter head of the shield machine to uncontrollable automatic rotation.
When the shield machine cutterhead excavates soil in a tunnel, soil bodies with different degrees can be adhered to different parts of the cutterhead due to the adhesion characteristic of the soil bodies, and the gravity center deviation of the shield machine cutterhead can be further increased by the soil bodies, so that automatic rotation with a larger degree is generated.
When the on-site operator of the shield machine needs to be close to the cutter head or directly enter the cutter head to perform operations such as tool changing or manual rock breaking, if the automatic rotation of the cutter head is not limited, the on-site operator can be extremely dangerous.
The traditional mode of limiting the automatic rotation of the cutterhead is to fix the cutterhead and the tunnel wall or tunnel face into a whole by adopting an anchor rod, so that the automatic rotation of the cutterhead of the shield machine is prevented, but the mode is complicated in the construction process of anchor rod fixation, long in operation period and high in cost consumption, the anchor rod is required to be dismantled in the later stage, more repeated operation is brought to the whole tunnel construction, and the efficient propulsion of the tunnel engineering is not facilitated.
Disclosure of Invention
The utility model aims to overcome the defects of the prior art and provide the shield machine main drive speed reducer which has a braking function, and when the shield machine main drive stops running, the shield machine main drive speed reducer can act through a braking device, so that the automatic rotation of a shield machine cutterhead is avoided, and the safety and convenience of personnel operation are improved.
In order to achieve the purpose, the technical scheme adopted by the utility model is that the main driving speed reducer of the shield machine comprises:
a housing;
an input shaft penetrating the housing and extending horizontally rearward;
a braking device;
the braking device comprises a power rotating disc, a friction braking disc and a driving piece, wherein the power rotating disc is sleeved on the input shaft and rotates synchronously with the input shaft, the friction braking disc comprises a front braking disc and a rear braking disc which are positioned on two sides of the power rotating disc, the friction braking disc is in a braking state and a non-braking state, when the friction braking disc is in the braking state, the front braking disc and the rear braking disc clamp the power rotating disc and abut against the shell, so that the power rotating disc and the input shaft keep static relative to the shell, when the friction braking disc is in the non-braking state, the front braking disc and the rear braking disc loosen the power rotating disc, so that the power rotating disc and the input shaft can rotate relative to the shell, and the driving piece is connected to the shell and is used for driving the front braking disc and the rear braking disc to clamp or loosen.
Preferably, the braking device further comprises a base and an end cover, the driving piece comprises a hydraulic oil cylinder and a combined nested compression spring, and the base, the hydraulic oil cylinder and the end cover are sequentially arranged from front to back and are locked on the shell through a through bolt.
Further preferably, the rear side of the base is provided with an annular step for mounting the power rotating disc and the friction braking disc, the annular step is provided with a radial step surface perpendicular to the input shaft and an axial step surface parallel to the input shaft, the radial step surface is attached to the front braking disc, and a gap is reserved between the axial step surface and the outer circumferential surfaces of the power rotating disc and the friction braking disc.
Further preferably, a temperature sensor is provided on the base in a penetrating manner through the axial step surface and aligned with a joint of the power rotating disc and the rear brake disc or a joint of the power rotating disc and the front brake disc.
Still preferably, the hydraulic cylinder comprises a cylinder seat sleeve and a cylinder rod sleeve penetrating through the cylinder seat sleeve, an inner annular flange is arranged on the inner wall of the cylinder seat sleeve, an outer annular flange is arranged on the outer wall of the cylinder rod sleeve, the inner annular flange, the outer annular flange, the inner wall of the cylinder seat sleeve and the outer wall of the cylinder rod sleeve enclose a sealed hydraulic oil cavity, when the hydraulic oil cavity is pressurized, the cylinder rod sleeve moves backwards, the front end part of the cylinder rod sleeve is separated from the rear brake block, and the front brake disc and the rear brake disc are loosened to enable the friction brake disc to be converted into a non-braking state.
Further preferably, the cylinder seat cover is provided with a pressure sensor for detecting the oil pressure in the hydraulic oil cavity in a penetrating manner, the pressure sensor is inserted into a detection pipeline in the cylinder seat cover, and the detection pipeline is a bypass pipeline of the hydraulic oil cavity.
Further preferably, the combined nested compression spring is arranged between the end cover and the oil cylinder rod sleeve, when the hydraulic oil cavity is depressurized, the combined nested compression spring pushes the oil cylinder rod sleeve to move forwards, and the front end part of the oil cylinder rod sleeve is attached to and abutted against the rear brake pad, so that the front brake disc and the rear brake disc clamp the power rotating disc and abut against the shell, and the friction brake disc is changed to a braking state.
Further preferably, a front groove for accommodating the front end part of the combined nested compression spring is formed in the rear end face of the oil cylinder rod sleeve, and a rear groove for accommodating the rear end part of the combined nested compression spring is formed in the front end face of the end cover.
Further preferably, a displacement detection sensor for detecting the limit position of the rear end face of the oil cylinder rod sleeve is arranged on the end cover in a penetrating mode, and the displacement detection sensor is arranged in a direction parallel to the input shaft.
Further preferably, the power rotating disc is connected with the input shaft in a matched manner through a pattern, and/or a sleeve for covering the braking device is connected to the shell, and an observation/overhaul hole is formed in the sleeve.
Due to the application of the technical scheme, compared with the prior art, the utility model has the following advantages:
when the main driving of the shield machine stops running, the friction brake disc can be enabled to clamp the power rotary disc and abut against the shell through the action of the brake device, a braking function is realized, the shield machine cutterhead and the shell are kept relatively static, automatic rotation of the shield machine cutterhead is avoided, safety and convenience of personnel operation are improved, when the main driving of the shield machine starts running, the friction brake disc can be enabled to loosen the power rotary disc through the action of the brake device, an input shaft for driving the shield machine cutterhead can rotate relative to the shell, tunneling operation is realized, and compared with a method for fixing the cutterhead by an anchor rod in the past, construction cost of a shield tunnel is greatly reduced, and propulsion efficiency of tunnel engineering is improved.
Drawings
Fig. 1 is a schematic diagram of a power transmission structure between a main drive of a shield tunneling machine and a cutterhead.
Fig. 2 is an enlarged schematic cross-sectional view of the rear end portion of the speed reducer of fig. 1.
Fig. 3 is a right-side view schematic diagram of fig. 1.
Wherein: 10. a housing; 11. a sleeve; 111. observation/manhole; 20. an input shaft; 21. a spline; 31. a power rotating disc; 32. a friction brake disc; 321. a front brake disc; 322. a rear brake disc; 33. a hydraulic cylinder; 331. a cylinder seat cover; 332. a cylinder rod sleeve; 333. an inner annular flange; 334. an outer annular flange; 335. a hydraulic oil chamber; 336. a pressure sensor; 337. detecting a pipeline; 338. a front groove; 339. an oil filling nozzle; 34. a combined nested compression spring; 35. a base; 351. an annular step; 352. a radial step surface; 353. an axial step surface; 354. a gap; 355. a temperature sensor; 36. an end cap; 361. a rear groove; 362. a displacement sensor; 37. and (5) a through bolt.
Detailed Description
The preferred embodiments of the present utility model will be described in detail below with reference to the attached drawings so that the advantages and features of the present utility model will be more readily understood by those skilled in the art, thereby making clear and defining the scope of the present utility model.
The front-rear direction described in the present utility model refers to the left-right direction in fig. 2.
As shown in fig. 1 to 3, the main driving speed reducer of a shield tunneling machine provided by the utility model comprises: the input shaft 20 penetrates through the shell 10 and horizontally stretches out backwards, the spline 21 is arranged on the outer wall of the input shaft 20, an inner spline hole is formed in the rear end face of the input shaft 20, the braking device comprises a power rotating disc 31, a friction braking disc 32 and a driving piece 33, the power rotating disc 31 is sleeved on the input shaft 20 and rotates synchronously with the input shaft 20, specifically, the power rotating disc 31 is connected with the input shaft 20 in a matched mode through the spline 21, the friction braking disc 32 comprises a front braking disc 321 and a rear braking disc 322 which are located on the front side and the rear side of the power rotating disc 31, the friction braking disc 31 is in a braking state and a non-braking state, the front braking disc 321 and the rear braking disc 322 clamp the power rotating disc 31 and abut against the shell 10 when the friction braking disc 32 is in the braking state, the power rotating disc 31 and the rear braking disc 322 are loosened, the power rotating disc 31 and the input shaft 20 can rotate relative to the shell 10, the driving piece 33 is connected to the shell 10, and the driving piece 33 is used for driving the front braking disc 321 and the rear braking disc 322 to be loosened or loosened when the friction braking disc 32 is in the non-braking state.
The device has the advantages that when the main driving of the shield machine stops running, the friction brake disc can clamp the power rotary disc and abut against the shell through the action of the brake device, a braking function is realized, the shield machine cutterhead and the shell are kept relatively static, the automatic rotation of the shield machine cutterhead is avoided, the safety and convenience of personnel operation are improved, when the main driving of the shield machine starts running, the friction brake disc can loosen the power rotary disc through the action of the brake device, the input shaft of the driving shield machine cutterhead can rotate relative to the shell, tunneling operation is realized, and compared with a traditional method for fixing the cutterhead by an anchor rod, the construction cost of a shield tunnel is greatly reduced, and the propulsion efficiency of tunnel engineering is improved.
In this embodiment, the braking device further includes a base 35 and an end cover 36, the driving member includes a hydraulic cylinder 33 and a combined nested compression spring 34, the base 35, the hydraulic cylinder 33 and the end cover 36 are sequentially disposed from front to back and are locked on the housing 10 by a through bolt 37, further, the rear side of the base 35 is provided with an annular step 351 for mounting the power rotary disk 31 and the friction brake disk 32, the annular step 351 has a radial step surface 352 perpendicular to the input shaft 20 and an axial step surface 353 parallel to the input shaft 20, the radial step surface 352 is attached to the front brake disk 321, when the friction brake disk 32 is in a braking state, the front brake disk 321 and the rear brake disk 322 clamp the power rotary disk 31 and are abutted against the housing 10 by abutting against the radial step surface 352 (base 35), the axial step surface 353 and the outer circumferential surfaces of the power rotary disk 31 and the friction brake disk 32 are provided with a gap 354, the hydraulic cylinder 33 includes a cylinder seat sleeve 331 and a cylinder rod sleeve 332 penetrating inside the cylinder seat sleeve 331, the inner wall of the cylinder seat sleeve 331 is provided with an inner annular flange 333, the outer wall of the cylinder rod sleeve 332 is provided with an outer annular flange 334, the inner annular flange 334 is provided with an inner annular flange 334, and the inner annular flange 332 is also connected with the cylinder seat sleeve and the inner annular flange 332 and the outer annular flange 332 is connected with the front brake disk 322 and the outer annular flange by the inner annular flange 332 and the outer annular flange 332 of the cylinder sleeve and the cylinder sleeve; the combined nested compression spring 34 is formed by coaxially nesting a plurality of springs, the combined nested compression spring 34 is arranged between the end cover 36 and the oil cylinder rod sleeve 332, when the hydraulic oil cavity 335 is depressurized, the combined nested compression spring 34 pushes the oil cylinder rod sleeve 332 to move forwards, the front end part of the oil cylinder rod sleeve 332 is attached to and abutted against the rear brake plate 322, the front brake disc 321 and the rear brake disc 322 clamp the power rotating disc 31 and abut against the shell 10, and the friction brake disc 32 is changed to a braking state.
The hydraulic oil cavity is pressurized or depressurized through the electric remote control, so that the brake operation is released and started, meanwhile, the interlocking control can be realized with the action of the main drive of the shield machine, the intelligent and automatic level of the shield machine cutterhead brake operation is improved, the brake mode can enable on-site personnel to conduct one-key remote operation in the shield machine cab, the convenience of the shield machine parking brake operation is improved, and meanwhile, the danger that personnel enter the cutterhead brake operation is reduced; the pressure of the hydraulic oil cavity after pressure relief can be regulated to offset the elastic force applied by a part of combined nested compression springs to the oil cylinder rod sleeve, so that the parking braking moment can be regulated according to actual requirements, the requirements on the parking braking moment under different load working conditions can be met, and the stability and reliability of the parking braking operation of the shield machine can be further improved; the braking device has compact structure, small change to the existing speed reducer, permanent integration in the transmission system of the main drive of the shield machine cutterhead, and simple and convenient installation and implementation.
In order to monitor the temperature of the friction brake disc 32 after friction with the power rotary disc 31 and avoid the disc burning phenomenon, in this embodiment, a temperature sensor 355 is further provided on the base 35, and the temperature sensor 355 penetrates through the axial step surface 353 and aligns with the seam between the power rotary disc 31 and the rear brake disc 322.
In order to monitor the pressure in the hydraulic oil chamber 335, in this embodiment, a pressure sensor 336 for detecting the oil pressure in the hydraulic oil chamber 335 is provided in the cylinder sleeve 331, and the pressure sensor 336 is inserted into a detection pipe 337 in the cylinder sleeve 331, and the detection pipe 337 is a bypass pipe of the hydraulic oil chamber 35.
To reduce the shake of the combined nested compression spring 34 and improve the stability in use, in this embodiment, the rear end surface of the cylinder rod sleeve 332 is provided with a front groove 338 for accommodating the front end of the combined nested compression spring 34, and the front end surface of the end cover 36 is provided with a rear groove 361 for accommodating the rear end of the combined nested compression spring 34.
To monitor the distance of the backward movement of the cylinder rod cover 332, and avoid the end cover 36 from being damaged by the backward movement of the transition, in this embodiment, a displacement detection sensor 362 for detecting the limit position of the rear end surface of the cylinder rod cover 332 is provided on the end cover 36, and the displacement detection sensor 362 is disposed along the direction parallel to the input shaft 20.
To avoid the brake from being exposed, in this embodiment, a sleeve 11 for covering the brake is connected to the housing 10, and an observation/inspection hole 111 is formed in the sleeve 11.
The above embodiments are only for illustrating the technical concept and features of the present utility model, and are intended to enable those skilled in the art to understand the present utility model and to implement the same, but are not intended to limit the scope of the present utility model, and all equivalent changes or modifications made according to the spirit of the present utility model should be included in the scope of the present utility model.
Claims (10)
1. A shield tunneling machine main drive reducer, comprising:
a housing;
an input shaft penetrating the housing and extending horizontally rearward;
a braking device;
the method is characterized in that:
the braking device comprises a power rotating disc, a friction braking disc and a driving piece, wherein the power rotating disc is sleeved on the input shaft and rotates synchronously with the input shaft, the friction braking disc comprises a front braking disc and a rear braking disc which are positioned on two sides of the power rotating disc, the friction braking disc is in a braking state and a non-braking state, when the friction braking disc is in the braking state, the front braking disc and the rear braking disc clamp the power rotating disc and abut against the shell, so that the power rotating disc and the input shaft keep static relative to the shell, when the friction braking disc is in the non-braking state, the front braking disc and the rear braking disc loosen the power rotating disc, so that the power rotating disc and the input shaft can rotate relative to the shell, and the driving piece is connected to the shell and is used for driving the front braking disc and the rear braking disc to clamp or loosen.
2. The shield tunneling machine main drive reducer according to claim 1, wherein: the braking device further comprises a base and an end cover, the driving piece comprises a hydraulic oil cylinder and a combined nested compression spring, and the base, the hydraulic oil cylinder and the end cover are sequentially arranged from front to back and are locked on the shell through a through bolt.
3. The shield tunneling machine main drive reducer according to claim 2, characterized in that: the rear side of the base is provided with an annular step for installing the power rotating disc and the friction braking disc, the annular step is provided with a radial step surface perpendicular to the input shaft and an axial step surface parallel to the input shaft, the radial step surface is attached to the front braking disc, and a gap is reserved between the axial step surface and the outer circumferential surfaces of the power rotating disc and the friction braking disc.
4. A shield tunneling machine main drive reducer according to claim 3, wherein: and a temperature sensor penetrates through the axial step surface and is aligned with a joint of the power rotating disk and the rear brake disk or a joint of the power rotating disk and the front brake disk.
5. The shield tunneling machine main drive reducer according to claim 2, characterized in that: the hydraulic cylinder comprises a cylinder seat sleeve and a cylinder rod sleeve penetrating through the cylinder seat sleeve, an inner annular flange is arranged on the inner wall of the cylinder seat sleeve, an outer annular flange is arranged on the outer wall of the cylinder rod sleeve, the inner annular flange, the outer annular flange, the inner wall of the cylinder seat sleeve and the outer wall of the cylinder rod sleeve enclose a closed hydraulic oil cavity, when the hydraulic oil cavity is pressurized, the cylinder rod sleeve moves backwards, the front end part of the cylinder rod sleeve is separated from the rear brake disc, and the front brake disc and the rear brake disc are loosened by the power rotating disc, so that the friction brake disc is changed into a non-braking state.
6. The shield tunneling machine main drive reducer according to claim 5, wherein: the oil cylinder seat sleeve is penetrated with a pressure sensor for detecting the oil pressure in the hydraulic oil cavity, the pressure sensor is inserted into a detection pipeline in the oil cylinder seat sleeve, and the detection pipeline is a bypass pipeline of the hydraulic oil cavity.
7. The shield tunneling machine main drive reducer according to claim 5, wherein: the combined nested compression spring is arranged between the end cover and the oil cylinder rod sleeve, when the hydraulic oil cavity is depressurized, the combined nested compression spring pushes the oil cylinder rod sleeve to move forwards, the front end part of the oil cylinder rod sleeve is attached to and abutted against the rear brake disc, so that the front brake disc and the rear brake disc clamp the power rotating disc and abut against the shell, and the friction brake disc is changed to a braking state.
8. The shield tunneling machine main drive reducer according to claim 7, wherein: the rear end face of the oil cylinder rod sleeve is provided with a front groove for accommodating the front end part of the combined nested compression spring, and the front end face of the end cover is provided with a rear groove for accommodating the rear end part of the combined nested compression spring.
9. The shield tunneling machine main drive reducer according to claim 8, wherein: the end cover is provided with a displacement detection sensor in a penetrating mode, wherein the displacement detection sensor is used for detecting the limit position of the rear end face of the oil cylinder rod sleeve, and the displacement detection sensor is arranged along the direction parallel to the input shaft.
10. The shield tunneling machine main drive reducer according to any one of claims 1 through 9, characterized in that: the power rotating disc is connected with the input shaft in a matched mode through a pattern, and/or a casing is connected with a sleeve used for covering the braking device, and an observation/overhaul hole is formed in the sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320081607.1U CN219549436U (en) | 2023-01-12 | 2023-01-12 | Main driving speed reducer of shield tunneling machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320081607.1U CN219549436U (en) | 2023-01-12 | 2023-01-12 | Main driving speed reducer of shield tunneling machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219549436U true CN219549436U (en) | 2023-08-18 |
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ID=87737954
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320081607.1U Active CN219549436U (en) | 2023-01-12 | 2023-01-12 | Main driving speed reducer of shield tunneling machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219549436U (en) |
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2023
- 2023-01-12 CN CN202320081607.1U patent/CN219549436U/en active Active
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