CN114483928B - Main drive speed reducer of high-speed shield tunneling machine - Google Patents
Main drive speed reducer of high-speed shield tunneling machine Download PDFInfo
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- CN114483928B CN114483928B CN202210103159.0A CN202210103159A CN114483928B CN 114483928 B CN114483928 B CN 114483928B CN 202210103159 A CN202210103159 A CN 202210103159A CN 114483928 B CN114483928 B CN 114483928B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/0412—Cooling or heating; Control of temperature
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D55/00—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes
- F16D55/24—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with a plurality of axially-movable discs, lamellae, or pads, pressed from one side towards an axially-located member
- F16D55/26—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with a plurality of axially-movable discs, lamellae, or pads, pressed from one side towards an axially-located member without self-tightening action
- F16D55/36—Brakes with a plurality of rotating discs all lying side by side
- F16D55/40—Brakes with a plurality of rotating discs all lying side by side actuated by a fluid-pressure device arranged in or one the brake
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/14—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position
- F16D65/16—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position arranged in or on the brake
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D66/00—Arrangements for monitoring working conditions, e.g. wear, temperature
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/023—Mounting or installation of gears or shafts in the gearboxes, e.g. methods or means for assembly
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/029—Gearboxes; Mounting gearing therein characterised by means for sealing the gearboxes, e.g. to improve airtightness
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/0412—Cooling or heating; Control of temperature
- F16H57/0415—Air cooling or ventilation; Heat exchangers; Thermal insulations
- F16H57/0417—Heat exchangers adapted or integrated in the gearing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/08—General details of gearing of gearings with members having orbital motion
- F16H57/10—Braking arrangements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2121/00—Type of actuator operation force
- F16D2121/02—Fluid pressure
- F16D2121/04—Fluid pressure acting on a piston-type actuator, e.g. for liquid pressure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H2057/02086—Measures for reducing size of gearbox, e.g. for creating a more compact transmission casing
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/64—Electric machine technologies in electromobility
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Details Of Gearings (AREA)
Abstract
The invention provides a main driving speed reducer of a high-speed shield machine, which comprises a shell, a speed reduction gear transmission device arranged in the shell, wherein the input end of the speed reduction gear transmission device is provided with a labyrinth cooling device arranged in the shell, and the middle part of the speed reduction gear transmission device is provided with a spiral cooling unit arranged in the shell; one end of the spline housing is connected with the input end of the reduction gear transmission device in a key way, the other end of the spline housing is connected with the motor, and a parking brake system is sleeved outside one end of the spline housing, which is far away from the reduction gear transmission device. The invention adopts a structure of connecting the double water cooling devices in series, and can effectively solve the problem of overhigh oil temperature during continuous high-speed operation. The parking brake system is configured, so that the opening and closing states of the brake and the manual shielding brake can be monitored, and the safety of the shield machine during the shutdown maintenance is effectively ensured.
Description
Technical Field
The invention relates to the technical field of shield machine speed reducers, in particular to a high-speed type shield machine main driving speed reducer.
Background
The shield machine is special mechanical equipment for tunnel shield construction, and is widely used for tunnel engineering of subways, railways, highways, municipal administration, hydropower and the like. The shield machine is provided with a plurality of speed reducers for driving the cutterhead, splicing duct pieces, conveying waste residues and the like, wherein the main driving speed reducers in the main driving system are the most severe in use condition, and in the use process of equipment, the main driving speed reducers are influenced by geological conditions and need to bear irregular load and impact. In the construction process, when facing to a soft stratum, the shield machine advances fast, the speed reducer bears larger torque, but the output rotating speed is lower, and the single operation time is shorter; when facing hard rock, the speed reducer needs to output a very high rotating speed to grind the rock mass, under the working condition, the output torque of the speed reducer is smaller but the rotating speed is very high, the single operation time is prolonged, the speed reducer is serious in heating, and the speed reducer is forced to stop when the temperature exceeds the limit. Therefore, there is a need to develop a speed reducer that can withstand high torque at low speeds and effectively stabilize the temperature during high speed operation.
The main drive speed reducer is used as one of core components of the shield machine, and depends on import for a long time, so that the cost of the whole machine, the production period, the timeliness of after-sale service and the like of the shield machine equipment are greatly influenced; moreover, the existing main drive speed reducer at home and abroad has the problems of poor reliability, large external dimension, incapability of bearing high rotating speed, no cooling device or cooling device configuration and over-temperature shutdown under high-speed working conditions.
Disclosure of Invention
According to the technical problem, the main driving speed reducer of the high-speed shield tunneling machine is provided.
The invention adopts the following technical means:
the main driving speed reducer of the high-speed shield machine comprises a shell, a speed reduction gear transmission device arranged in the shell, wherein a labyrinth cooling device arranged in the shell is arranged at the input end of the speed reduction gear transmission device, and a spiral cooling unit arranged in the shell is arranged at the middle part of the speed reduction gear transmission device;
the labyrinth cooling device comprises a main body with a circular groove, an end cover for sealing the main body and a labyrinth route arranged in the main body, wherein a labyrinth inlet of the labyrinth route is communicated with the outside of the shell; the spiral cooling unit is barrel-shaped, the outer wall of the spiral cooling unit is fixedly connected with the inner wall of the shell, a spiral cooling cavity is formed between the spiral cooling unit and the inner wall of the shell, a medium inlet of the spiral cooling cavity is communicated with a labyrinth outlet of the labyrinth route through a pipe assembly, and a medium outlet of the spiral cooling cavity is communicated with the outside of the shell;
the spline housing penetrates through the central through hole of the main body and is rotationally connected with the main body, one end of the spline housing is connected with the input end of the reduction gear transmission device in a key manner, the other end of the spline housing is connected with the motor, a parking brake system is sleeved outside one end, far away from the reduction gear transmission device, of the spline housing, and the parking brake system is fixedly connected with the end cover.
Preferably, the outer edge of the outer ring of the main body is fixedly connected with an annular bulge machined on the inner wall of the shell through bolts, a plurality of first radial rib plates which are uniformly distributed are fixed on the inner wall of the outer ring, and gaps are reserved between the first radial rib plates and the outer wall of the inner ring; the outer wall of the inner ring is fixedly provided with second radial rib plates between two adjacent first radial rib plates, one end of one second radial rib plate, which is close to the inner wall of the outer ring, is fixedly connected with the inner wall of the outer ring, and gaps are reserved between the other second radial rib plates and the inner wall of the outer ring; the second radial rib plate, the first radial rib plate, the main body and the end cover form a labyrinth route; two sides of the second radial rib plate fixedly connected with the inner wall of the outer ring are respectively provided with a labyrinth inlet and a labyrinth outlet which are processed on the end cover.
Preferably, the spiral cooling unit comprises a cylinder body and spiral rib plates processed on the outer wall of the cylinder body, two ends of the cylinder body are respectively and fixedly connected with the inner wall of the shell in a sealing way, and the spiral rib plates are attached to the inner wall of the shell.
Preferably, the parking braking system comprises a brake seat, wherein the brake seat is fixedly connected with an end cover, a first penetrating cover and a second penetrating cover are respectively arranged at two ends of the brake seat, the second penetrating cover is fixedly connected with the outer edge of a central through hole of the main body, an oil seal for dynamic sealing is arranged between the second penetrating cover and a spline housing, a friction plate is arranged between an internal spline of the brake seat and an external spline of the spline housing, a backing plate is arranged between the friction plate and the first penetrating cover, a piston is arranged in the brake seat, a compression spring is arranged in the piston, the second penetrating cover is fixed at the end part of the brake seat and compresses the compression spring, the brake seat is provided with a hydraulic oil hole communicated with the piston, the compression spring drives the output end of the piston to push the friction plate, and hydraulic oil entering the hydraulic oil hole counteracts the thrust of the compression spring so that the hydraulic oil does not push the friction plate.
Preferably, a piston guide screw is installed on the piston, and the piston guide screw passes through the first transparent cover, and a proximity sensor for monitoring an open and closed state of the piston is installed on the first transparent cover.
Preferably, the output end of the reduction gear transmission device penetrates out of the shell, and the output end of the reduction gear transmission device is sleeved with a diagonalized rock sealing structure;
the angle rock sealing structure comprises a shaft sleeve sleeved outside the output end of the reduction gear transmission device, a third transparent cover is sleeved outside the shaft sleeve, rotary sealing is arranged between the third transparent cover and the shaft sleeve, the third transparent cover is fixedly connected with the end face of the shell, a fourth transparent cover in interference fit with the output end of the reduction gear transmission device is sleeved at the output end of the reduction gear transmission device, the fourth transparent cover abuts against the end face of the shaft sleeve through a spring retainer ring, and the third transparent cover is provided with a grease injection port for rotary sealing lubrication.
Preferably, the reduction gear transmission device comprises a primary sun gear, one end of the primary sun gear is in key connection with a spline sleeve, the primary sun gear is an input end of the reduction gear transmission device, the other end of the primary sun gear is meshed with a plurality of primary planet gears, the primary planet gears are meshed with a secondary gear ring on a shell, the primary planet gears are installed on a primary planet carrier through primary planet axles, the primary planet carrier is connected with a secondary sun gear through splines, the secondary sun gear is meshed with a plurality of secondary planet gears, the secondary planet gears are installed on a secondary planet carrier through secondary planet axles, the secondary planet carrier is connected with a tertiary sun gear through splines, the tertiary sun gear is meshed with a plurality of tertiary planet gears, the tertiary planet gears are meshed with a tertiary gear ring on the shell, the tertiary planet gears are installed on a tertiary planet carrier through tertiary planet axles, the end of the tertiary planet carrier is provided with internal splines, and one end of the tertiary planet carrier with internal splines is an output end of the reduction gear transmission device.
Compared with the prior art, the invention has the following advantages:
1. the invention adopts a structure of connecting the double water cooling devices in series, so that the problem of overhigh oil temperature during continuous high-speed operation can be effectively solved; in the prior art, a cooling device is not arranged, and the cooling capacity is insufficient, so that the machine is forced to stop due to overhigh oil temperature when the machine continuously runs at high speed, and the construction efficiency is influenced.
2. The invention is provided with a parking brake system, can monitor the opening and closing states of the brake and the manual shielding brake, and effectively ensures the safety of the shield machine during the shutdown maintenance; whereas the prior art does not provide a brake.
3. The angle rock sealing structure and the high-pressure bearing oil seal can effectively resist high pressure from the outside, and can effectively keep lubrication and dust prevention of the oil seal lip; whereas prior art non-corner rock seal arrangements.
4. The invention has compact mechanism, high power density and high reliability; the prior art has the problems of oversized external dimension, weak bearing capacity, poor reliability and the like.
Based on the reasons, the invention can be widely popularized in the fields of shield machines and the like.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a main driving speed reducer of a high-speed shield tunneling machine according to an embodiment of the present invention.
Fig. 2 is a schematic diagram of another phase position of a main driving speed reducer of a high-speed shield tunneling machine according to an embodiment of the present invention.
Fig. 3 illustrates a parking brake system in accordance with an embodiment of the present invention.
Fig. 4 is a top view of a body in an embodiment of the invention.
Fig. 5 is a schematic view of a spiral cooling unit according to an embodiment of the present invention.
In the figure: the radial cooling system comprises a spline housing, a 2-welding machine body, a 3-pipe assembly, a 4-first-stage planetary gear, a 5-first-stage planetary gear shaft, a 6-second-stage sun gear, a 7-second-stage planetary gear, an 8-second-stage planetary gear shaft, a 9-liquid level device, a 10-third-stage sun gear, a 11-third-stage planetary gear, a 12-third-stage planetary gear shaft, a 13-lower machine body, a 14-third through cover, a 15-fourth through cover, a 16-water inlet screw plug, a 17-stage sun gear, a 18-second-stage gear ring, a 19-first-stage planetary carrier, a 20-second-stage planetary carrier, a 21-first oil drain screw plug, a 22-third-stage gear ring, a 23-third-stage planetary carrier, a 24-second oil drain screw plug, a 25-sleeve, a 26-end cover, a 27-gram head, a 28-main body, a 29-air-through plug, a 30-wear pad, a 31-temperature sensor, a 32-water outlet screw plug, a 33-brake oil inlet pipe assembly, a 34-first through cover, a 35-piston guide screw, a 36-compression spring, a 37-piston, a 38-brake seat, a 39-friction plate, a 40-second through cover, a 45-second through cover, a radial cooling unit, a radial cooling system, a screw plate and a radial cooling system, a screw unit, a 46-and a radial cooling system.
Detailed Description
It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other. The invention will be described in detail below with reference to the drawings in connection with embodiments.
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present invention. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.
The relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless it is specifically stated otherwise. Meanwhile, it should be clear that the dimensions of the respective parts shown in the drawings are not drawn in actual scale for convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.
In the description of the present invention, it should be understood that the azimuth or positional relationships indicated by the azimuth terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal", and "top, bottom", etc., are generally based on the azimuth or positional relationships shown in the drawings, merely to facilitate description of the present invention and simplify the description, and these azimuth terms do not indicate and imply that the apparatus or elements referred to must have a specific azimuth or be constructed and operated in a specific azimuth, and thus should not be construed as limiting the scope of protection of the present invention: the orientation word "inner and outer" refers to inner and outer relative to the contour of the respective component itself.
Spatially relative terms, such as "above … …," "above … …," "upper surface at … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
In addition, the terms "first", "second", etc. are used to define the components, and are only for convenience of distinguishing the corresponding components, and the terms have no special meaning unless otherwise stated, and therefore should not be construed as limiting the scope of the present invention.
As shown in fig. 1 to 5, a main driving speed reducer of a high-speed shield machine comprises a shell, a reduction gear transmission device arranged in the shell, wherein the shell comprises a welding machine body 2 and a lower machine body 13 fixed with the welding machine body, the reduction gear transmission device comprises a primary sun gear 17, one end of the primary sun gear 17 is connected with a spline housing 1 in a key way, the primary sun gear 17 is an input end of the reduction gear transmission device, the other end of the primary sun gear 17 is meshed with a plurality of primary planet gears 4, the primary planet gears 4 are meshed with a secondary gear ring 18 which is arranged on the welding machine body 2, the primary planet gears 4 are arranged on a primary planet carrier 19 through primary planet gear shafts 5, the primary planet carrier 19 is connected with a secondary sun gear 20 through a spline and clamped through a spring retainer mechanism, the secondary sun gear 6 is meshed with the plurality of secondary planet gears 7, the secondary planet gears 7 are meshed with the secondary gear ring 18, the secondary planet gears 7 are installed on the secondary planet carrier 20 through the secondary planet gear shafts 8, the secondary planet carrier 20 is connected with the tertiary sun gear 10 through splines and is clamped through a spring retainer ring mechanism, the tertiary sun gear 10 is meshed with the plurality of tertiary planet gears 11, the tertiary planet gears 11 are meshed with the tertiary gear ring 22 which is combined on the lower machine body, the tertiary planet gears 11 are installed on the tertiary planet carrier 23 through the tertiary planet gear shafts 12, the end parts of the tertiary planet carrier 23 are provided with internal splines for connecting with a host accessory to output power, and one end of the tertiary planet carrier 23 with the internal splines is the output end of a reduction gear transmission device. Bearings are arranged between the primary sun gear 17 and the secondary sun gear 6 and between the secondary sun gear 6 and the tertiary sun gear 10, and a wear-resisting pad 30 is arranged between the tertiary sun gear 10 and the tertiary planet carrier 23. The power is transmitted to the third-stage planet carrier 23 through the spline housing 1, the first-stage sun gear 17, the first-stage planet gears 4, the first-stage planet carrier 19, the second-stage sun gear 6, the second-stage planet gears 7, the second-stage planet carrier 20, the third-stage sun gear 10 and the third-stage planet gears 11 in sequence.
The welding machine body 2 is provided with a labyrinth cooling device arranged inside the welding machine body 2 near the spline housing 1 and the primary sun gear 17, and the welding machine body 2 is provided with a spiral cooling unit 44 positioned inside the welding machine body 2 near the secondary planet gears 7 and the primary planet carrier 19;
the labyrinth cooling device comprises a main body 28 with a circular groove, an end cover 26 for sealing the main body 28 and a labyrinth route arranged in the main body 28, wherein a labyrinth inlet of the labyrinth route is communicated with the outside of the welding machine body 2, and a water inlet screw plug 16 is arranged on the welding machine body 2; the spiral cooling unit 44 is barrel-shaped, the outer wall of the spiral cooling unit is fixedly connected with the inner wall of the welding machine body 2, a spiral cooling cavity is formed between the spiral cooling unit and the inner wall of the welding machine body 2, a medium inlet of the spiral cooling cavity is communicated with a labyrinth outlet of the labyrinth route through the pipe assembly 3, a medium outlet of the spiral cooling cavity is communicated with the outside of the welding machine body 2, and the welding machine body 2 is provided with a water outlet screw plug 32 at the medium outlet;
the outer edge of the outer ring of the main body 28 is fixedly connected with an annular bulge machined on the inner wall of the welding machine body 2 through bolts, a plurality of uniformly distributed first radial rib plates 45 are fixed on the inner wall of the outer ring, and gaps are reserved between the first radial rib plates 45 and the outer wall of the inner ring; the outer wall of the inner ring is fixedly provided with second radial rib plates 46 between two adjacent first radial rib plates 45, one end, close to the inner wall of the outer ring, of one second radial rib plate 46 is fixedly connected with the inner wall of the outer ring, and gaps are reserved between the other second radial rib plates 46 and the inner wall of the outer ring; the second radial web 46, the first radial web 45, the body 28, and the end cap 26 form a labyrinth path; the second radial rib 46 fixedly attached to the inner wall of the outer ring has a labyrinth inlet and a labyrinth outlet, respectively, machined into the end cap 26.
Preferably, the spiral cooling unit 44 comprises a cylinder 47 and a spiral rib plate 48 processed on the outer wall of the cylinder 47, two ends of the cylinder 47 are respectively and fixedly connected with the inner wall of the welding machine body 2 in a sealing way, and the spiral rib plate 48 is attached to the inner wall of the welding machine body 2.
The spline housing 1 passes through the central through hole of the main body 28, a bearing is arranged between the main body 28 and the spline housing 1, and the bearing clearance is adjusted and prevented from loosening through the lock nut 40 and a special gasket thereof. One end of the spline housing 1 is in key connection with the primary sun gear 17, the other end of the spline housing 1 is connected with a motor, a parking brake system is sleeved outside one end of the spline housing 1, which is far away from the primary sun gear 17, and the parking brake system is fixedly connected with the end cover 26.
The parking brake system comprises a brake seat 38, the brake seat 38 is fixedly connected with an end cover 26, a first through cover 34 and a second through cover 41 are respectively arranged at two ends of the brake seat 38, the second through cover 41 is fixedly connected with the outer edge of a central through hole of a main body 28, an oil seal for dynamic sealing is arranged between the second through cover 41 and a spline housing 1, a friction plate 39 is arranged between an internal spline of the brake seat 38 and an external spline of the spline housing, a backing plate 42 is arranged between the friction plate 39 and the first through cover 34, a piston 37 is arranged in the brake seat 38, a compression spring 36 is arranged in the piston 37, the second through cover 41 is fixed at the end part of the brake seat 38 and compresses the compression spring 36, the brake seat 38 is provided with a hydraulic oil hole communicated with the piston 37, the hydraulic oil hole is communicated with one end of a brake oil inlet pipe assembly 33, the other end of the brake oil inlet pipe assembly 33 penetrates out of a welding machine body 2, the compression spring 36 drives the output end of the piston 37 to push the friction plate 39, the friction plate 1 cannot rotate, the effect of a speed reducer is achieved, the thrust force of the hydraulic oil entering the hydraulic oil hole counteracts the compression spring 37 to push the friction plate 39, and the friction plate 37 cannot be pushed by the friction plate 39, and the friction plate 39 cannot rotate after the hydraulic oil cannot be pushed by the friction plate 37, and the friction plate 1 can rotate, and the friction plate 1 cannot rotate.
The piston 37 is mounted with a piston guide screw 35, and the piston guide screw 35 passes through the first transparent cover 34, and the first transparent cover 34 is mounted with a proximity sensor 43 for monitoring the open/close state of the piston 37, and the proximity sensor 43 is fixed by the glan head 27.
The end part of the three-stage planet carrier 37 penetrates out of the shell, and an angle rock sealing structure is sleeved on the end part of the three-stage planet carrier 37;
the angle rock sealing structure comprises a shaft sleeve 25 sleeved outside a three-stage planet carrier 37, a third transparent cover 14 is sleeved outside the shaft sleeve 25, a rotary seal is arranged between the third transparent cover 14 and the shaft sleeve 25, the rotary seal can bear pressure (bearing pressure of 1 MPa) on two sides, and the third transparent cover 14 is provided with a grease injection port for rotary seal lubrication. The third transparent cover 14 is fixedly connected with the end face of the lower machine body 13, the third-stage planet carrier 37 is sleeved with a fourth transparent cover 15 in interference fit with the third-stage planet carrier, and the fourth transparent cover 15 abuts against the end face of the shaft sleeve 25 through a spring retainer ring.
The welding machine body 2 is provided with an air vent and an oil drain hole for releasing the pressure in the shell, wherein the oil drain hole is used for oil injection and oil drain, the air vent and the oil drain hole are respectively provided with an air vent plug 29 and a first oil drain screw plug 21, and the welding machine body 2 is provided with a temperature sensor 31 for monitoring the oil temperature in the speed reducer and a liquid level device 9 for monitoring the oil level, which are arranged near the secondary planet carrier 20; the lower body 13 has an oil drain hole near the three-stage carrier 23, and the oil drain hole has a second drain plug 24 for oil injection and oil drain.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.
Claims (7)
1. The main driving speed reducer of the high-speed shield machine comprises a shell and a speed reduction gear transmission device arranged in the shell, and is characterized in that a labyrinth cooling device arranged in the shell is arranged at the input end of the speed reduction gear transmission device, and a spiral cooling unit arranged in the shell is arranged at the middle part of the speed reduction gear transmission device;
the labyrinth cooling device comprises a main body with a circular groove, an end cover for sealing the main body and a labyrinth route arranged in the main body, wherein a labyrinth inlet of the labyrinth route is communicated with the outside of the shell; the spiral cooling unit is barrel-shaped, the outer wall of the spiral cooling unit is fixedly connected with the inner wall of the shell, a spiral cooling cavity is formed between the spiral cooling unit and the inner wall of the shell, a medium inlet of the spiral cooling cavity is communicated with a labyrinth outlet of the labyrinth route through a pipe assembly, and a medium outlet of the spiral cooling cavity is communicated with the outside of the shell;
the spline housing passes through the center through hole of main part, and with the main part rotates to be connected, its one end with reduction gear's input key connection, the other end is connected with the motor, the spline housing is kept away from reduction gear's one end overcoat has parking braking system, just parking braking system with end cover fixed connection.
2. The high-speed shield machine main driving speed reducer according to claim 1, wherein the outer edge of the outer ring of the main body is fixedly connected with an annular bulge machined on the inner wall of the shell through bolts, a plurality of first radial rib plates which are uniformly distributed are fixed on the inner wall of the outer ring, and gaps are reserved between the first radial rib plates and the outer wall of the inner ring; a second radial rib plate is fixed between two adjacent first radial rib plates on the outer wall of the inner ring, one end, close to the inner wall of the outer ring, of one second radial rib plate is fixedly connected with the inner wall of the outer ring, and gaps are reserved between the other second radial rib plates and the inner wall of the outer ring; the second radial rib plate, the first radial rib plate, the main body and the end cover form the labyrinth route; and the two sides of the second radial rib plate fixedly connected with the inner wall of the outer ring are respectively provided with the labyrinth inlet and the labyrinth outlet which are processed on the end cover.
3. The high-speed shield machine main driving speed reducer according to claim 1, wherein the spiral cooling unit comprises a cylinder body and spiral rib plates processed on the outer wall of the cylinder body, two ends of the cylinder body are respectively and fixedly connected with the inner wall of the shell in a sealing manner, and the spiral rib plates are attached to the inner wall of the shell.
4. The main driving speed reducer of a high-speed shield tunneling machine according to claim 1, wherein the parking braking system comprises a brake seat fixedly connected with an end cover, a first penetrating cover and a second penetrating cover are respectively arranged at two ends of the brake seat, the second penetrating cover is fixedly connected with the outer edge of a central through hole of the main body, an oil seal for dynamic sealing is arranged between the second penetrating cover and the spline housing, a friction plate is arranged between an internal spline of the brake seat and an external spline of the spline housing, a piston is arranged in the brake seat, a compression spring is arranged in the piston, the second penetrating cover is fixed at the end part of the brake seat and compresses the compression spring, the brake seat is provided with a hydraulic oil hole communicated with the piston, and the compression spring drives the output end of the piston to push the friction plate, and hydraulic oil entering the hydraulic oil hole counteracts the thrust of the compression spring so as not to push the friction plate.
5. The main drive speed reducer of a high-speed shield machine according to claim 1, wherein a piston guide screw is installed on a piston, the piston guide screw penetrates through a first transparent cover, and a proximity sensor for monitoring the opening and closing states of the piston is installed on the first transparent cover.
6. The main drive speed reducer of a high-speed shield machine according to claim 1, wherein the output end of the reduction gear transmission device penetrates out of the shell, and an diagenetic sealing structure is sleeved on the output end of the reduction gear transmission device;
the diagonals sealing structure comprises a shaft sleeve sleeved outside the output end of the reduction gear transmission device, a third transparent cover is sleeved outside the shaft sleeve, rotary sealing is arranged between the third transparent cover and the shaft sleeve, the third transparent cover is fixedly connected with the end face of the shell, the output end of the reduction gear transmission device is sleeved with a fourth transparent cover in interference fit with the output end of the reduction gear transmission device, the fourth transparent cover is propped against the end face of the shaft sleeve through a spring retainer ring, and the third transparent cover is provided with a grease injection port for rotary sealing lubrication.
7. The high-speed shield machine main drive speed reducer according to claim 1, wherein the speed reduction gear transmission comprises a primary sun gear, one end of the primary sun gear is in key connection with the spline housing, the primary sun gear is an input end of the speed reduction gear transmission, the other end of the primary sun gear is in engagement with a plurality of primary planet gears, the primary planet gears are in engagement with a secondary gear ring on the housing, the primary planet gears are mounted on a primary planet carrier through primary planet axles, the primary planet carrier is connected with a secondary sun gear through splines, the secondary sun gear is in engagement with a plurality of secondary planet gears, the secondary planet gears are in engagement with the secondary gear ring, the secondary planet carrier is in engagement with a tertiary sun gear through splines, the tertiary sun gear is in engagement with a plurality of tertiary planet gears, the tertiary planet gears are in engagement with a tertiary gear ring on the housing, the tertiary planet axles are mounted on a tertiary planet carrier, the end of the tertiary planet carrier has an inner spline, and the output end of the speed reduction gear has an inner spline.
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| CN202210103159.0A CN114483928B (en) | 2022-01-27 | 2022-01-27 | Main drive speed reducer of high-speed shield tunneling machine |
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| CN202210103159.0A CN114483928B (en) | 2022-01-27 | 2022-01-27 | Main drive speed reducer of high-speed shield tunneling machine |
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| CN114483928A (en) | 2022-05-13 |
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