CN108825676B - Oil cylinder of wet-type gear shifting clutch - Google Patents
Oil cylinder of wet-type gear shifting clutch Download PDFInfo
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- CN108825676B CN108825676B CN201810526667.3A CN201810526667A CN108825676B CN 108825676 B CN108825676 B CN 108825676B CN 201810526667 A CN201810526667 A CN 201810526667A CN 108825676 B CN108825676 B CN 108825676B
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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
- F16D25/00—Fluid-actuated clutches
- F16D25/12—Details not specific to one of the before-mentioned types
- F16D25/14—Fluid pressure control
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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
- F16D25/00—Fluid-actuated clutches
- F16D25/12—Details not specific to one of the before-mentioned types
- F16D25/123—Details not specific to one of the before-mentioned types in view of cooling and lubrication
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- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
Abstract
The invention relates to an oil cylinder of a wet type gear shifting clutch, which comprises: the clutch auxiliary oil cylinder assembly, the clutch main oil cylinder, the piston and the elastic part are arranged on the outer wall of the clutch main oil cylinder; the clutch auxiliary oil cylinder assembly and the clutch main oil cylinder are sequentially and radially arranged on the outer side of the clutch bearing and fixedly connected; one end of the piston is connected with the clutch auxiliary oil cylinder assembly through the elastic piece, and the other end of the piston is connected with the clutch main oil cylinder; lubricating oil is filled in the clutch auxiliary oil cylinder assembly; the clutch master cylinder is filled with operating pressure oil. The oil cylinder provided by the invention realizes the main and auxiliary oil cylinder shunting function of the rotary clutch by adopting the clutch auxiliary oil cylinder assembly, has a simple, compact and reliable structure, effectively reduces the size of the clutch, effectively avoids the influence of centrifugal oil pressure, avoids the influence of the centrifugal oil pressure on the shifting dynamic performance of the clutch especially at high rotating speed, realizes convenient control and calibration of the clutch, greatly reduces the shifting dynamic impact load of a planetary speed change mechanism, and improves the acceleration performance and smoothness of a vehicle.
Description
Technical Field
The invention relates to the technical field of mechanical transmission, in particular to an oil cylinder of a wet type gear shifting clutch.
Background
The wet multi-plate clutch is one of the key parts of the vehicle transmission system, is a key part for realizing energy transmission and regulation and control no matter in the switching of the working modes of new generation electromechanical composite transmission or in the direct-drive speed change and hydraulic and mechanical working condition conversion of hydraulic and mechanical comprehensive transmission, and forms different gears by separating and combining to change the power transmission route of the speed change mechanism so as to realize the forward and reverse of the vehicle. Meanwhile, the existing planetary speed change mechanism has high transmission power and limited space size.
The high power density is an important development direction of a transmission device, the volume of a clutch accounts for more than 1/3 of a planetary speed change mechanism, and on the premise that the outer diameter of the clutch is determined, the traditional clutch adopts a centrifugal marble and a separation spring as a clutch separation structure, the width-diameter ratio of the clutch separation structure is 0.30-0.35, and a large axial space is occupied; meanwhile, the centrifugal force of the centrifugal marble is in direct proportion to the square of the rotating speed of the clutch, so that the centrifugal marble is not beneficial to operation and control, the impact is large during gear shifting, the abrasion of the friction plate is accelerated, and the service life of the bearing piece is shortened.
Disclosure of Invention
In order to solve the defects in the prior art, the invention provides an oil cylinder of a wet-type gear shifting clutch.
The technical scheme provided by the invention is as follows: a cylinder of a wet shift clutch, the cylinder comprising: the clutch auxiliary oil cylinder assembly, the clutch main oil cylinder (1), the piston (2) and the elastic piece (4);
the clutch auxiliary oil cylinder assembly and the clutch main oil cylinder (1) are sequentially and radially arranged on the outer side of the clutch bearing and fixedly connected;
one end of the piston (2) is connected with the clutch auxiliary oil cylinder assembly, and the other end of the piston is connected with the clutch main oil cylinder (1);
lubricating oil is introduced into a cavity formed by the clutch auxiliary oil cylinder assembly (6) and the piston (2), and the elastic part (4) is arranged in the cavity;
and operating pressure oil is communicated with a cavity formed by the clutch master cylinder (1) and the piston (2).
Preferably, the clutch slave cylinder assembly includes: the clutch auxiliary oil cylinder (8), the flow distribution ring (9) and the positioning pin (10);
the flow distribution ring (9) is radially arranged between the clutch slave cylinder (8) and the piston (2), and the circumferential position of the flow distribution ring (9) is fixed through a positioning pin (10).
Preferably, a hole for passing operating pressure oil is arranged on the clutch auxiliary oil cylinder (8);
a hole for lubricating oil to pass through is arranged on the clutch auxiliary oil cylinder (8);
the distribution ring (9) comprises: the distribution flow groove group is annularly arranged on the ring body;
The flow distribution groove set comprises: and the two component circulation grooves are perpendicular to each other, one component of the distribution through groove is communicated with the hole of the clutch master cylinder (1) to form a master cylinder oil passage, and the other component of the distribution through groove is communicated with the hole of the clutch slave cylinder (8) to form a slave cylinder oil passage.
Preferably, the master cylinder oil passage includes: the main oil cylinder radial oil duct (6-1) is radially arranged on the clutch auxiliary oil cylinder (8), and the main oil cylinder axial oil duct (6-2) is axially arranged on the clutch auxiliary oil cylinder (8) and is communicated with the main oil cylinder radial oil duct (6-1);
the sub-cylinder oil passage includes: the auxiliary oil cylinder radial oil duct (6-3) is radially arranged on the clutch auxiliary oil cylinder (8), and the auxiliary oil cylinder radial oil duct is communicated with the clutch auxiliary oil cylinder (8);
the number of the radial oil passages (6-1) of the main oil cylinder is 4, and the radial oil passages are uniformly distributed along the circumferential direction of the clutch auxiliary oil cylinder (8);
the number of the radial oil passages (6-3) of the auxiliary oil cylinder is 2, and the radial oil passages are symmetrically arranged along the circumferential direction of the clutch auxiliary oil cylinder (8).
Preferably, each group of the shunting through grooves respectively consists of two symmetrically arranged shunting grooves (9-1);
the diverter tank (9-1) comprises: a crescent collecting groove (9-2) arranged on the inner wall of the ring body and a rectangular circulating groove (9-3) communicated with the crescent collecting groove (9-2);
The auxiliary oil cylinder radial oil passage and the main oil cylinder radial oil passage are respectively communicated with the clutch auxiliary oil cylinder (8) and the clutch main oil cylinder (1) through a crescent collecting groove (9-2) of the splitter box (9-1);
one end of the main oil cylinder axial oil passage is provided with an oil plug (9-4), and the other end of the main oil cylinder axial oil passage is the outer edge of the auxiliary oil cylinder (8).
Preferably, the clutch auxiliary oil cylinder assembly (6) and the main oil cylinder (1) are fixedly connected through an axially arranged bolt (7).
Preferably, the bolts (7) are circumferentially arranged and have at least 16 bolts.
Preferably, the oil cylinder further includes: an O-shaped sealing ring (5) and an L-shaped sealing ring (3);
the O-shaped sealing ring (5) is radially arranged between the flow distribution ring (9) and the piston (2);
the number of the L-shaped sealing rings (3) is 2, one of the L-shaped sealing elements (3) is radially arranged between the clutch auxiliary oil cylinder (8) and the piston (2), and the other L-shaped sealing element (3) is radially arranged between the clutch main oil cylinder (1) and the piston (2).
Preferably, the clutch auxiliary oil cylinder assembly (6) and the clutch main oil cylinder (1) are respectively the same as the inner diameter and the outer diameter of a cavity formed by the piston (2).
Preferably, the elastic member (4) is a coil spring.
Preferably, the elastic part (4) comprises the following components in percentage by mass: c: 0.21%, Mn: 0.55%, Si: 1.1%, Cr: 0.10%, Nb: 0.03%, V: 0.04%, Ti: 0.09%, Al: 0.11%, the balance being Fe and irremovable impurities.
Preferably, the O-shaped sealing ring (5) and the L-shaped sealing ring (3) are respectively prepared from the following components in parts by weight: chloroprene rubber CR 244285 parts, light carbon black AB 77025 parts, anti-aging agent MB5 parts, dicumyl peroxide 1.0 part, phenyl triethoxysilane 3.4 parts, antioxidant 10352.2 parts, modified iron ore tailings 4.5 parts, propylene glycol sebacate polyester 1.2 parts and peregal O2.5 parts.
Compared with the closest prior art, the technical scheme provided by the invention has the following beneficial effects:
(1) according to the technical scheme provided by the invention, the flow distribution ring in the auxiliary oil cylinder assembly is adopted to realize the main and auxiliary oil cylinder flow distribution function of the rotary clutch, the structure is simple, compact and reliable, the size of the clutch is effectively reduced, the influence of centrifugal oil pressure is effectively avoided, the influence of the centrifugal oil pressure on the gear shifting dynamic performance of the clutch especially at high rotating speed is avoided, the convenient control and calibration of the clutch are realized, the gear shifting dynamic impact load of a planetary speed change mechanism is greatly reduced, and the acceleration performance and the smoothness of a vehicle are improved.
(2) According to the technical scheme provided by the invention, the oil cylinder of the wet type gear shifting clutch comprises: the clutch auxiliary oil cylinder assembly, the clutch main oil cylinder, the piston and the elastic piece are arranged on the clutch main oil cylinder; the clutch auxiliary oil cylinder assembly and the clutch main oil cylinder are sequentially and radially arranged on the outer side of the clutch bearing and fixedly connected; one end of the piston is connected with the clutch auxiliary oil cylinder assembly through the elastic piece, and the other end of the piston is connected with the clutch main oil cylinder; lubricating oil is filled in the clutch auxiliary oil cylinder assembly; the clutch master cylinder is filled with operating pressure oil; the clutch auxiliary oil cylinder assembly is adopted to realize the main and auxiliary oil cylinder shunting function of the rotary clutch, the structure is simple, compact and reliable, the size of the clutch is effectively reduced, the influence of centrifugal oil pressure is effectively avoided, the influence of the centrifugal oil pressure on the shifting dynamic performance of the clutch particularly at high rotating speed is avoided, the convenient control and calibration of the clutch are realized, the shifting dynamic impact load of the planetary speed change mechanism is greatly reduced, the acceleration performance and smoothness of a vehicle are improved, the width-diameter ratio of the clutch is greatly reduced, and the axial size and the size of the clutch are reduced; compared with the traditional clutch which adopts a centrifugal marble and a separating spring as a clutch separating structure and has the width-diameter ratio of 0.30-0.35, the oil cylinder provided by the invention occupies a small axial space, and because the inner diameter and the outer diameter of the main oil cylinder and the auxiliary oil cylinder are the same, the eccentricity is greatly reduced, the operation control is facilitated, the impact during gear shifting is small, the abrasion of an accelerating friction plate is reduced, and the service life of a bearing piece is further reduced.
(3) According to the technical scheme provided by the invention, the adopted O-shaped sealing ring and L-shaped sealing ring have the characteristics of heat resistance, wear resistance and leakage prevention.
(4) According to the technical scheme provided by the invention, the adopted elastic piece has good elasticity, is suitable for normal work in a load environment, has higher yield strength for manufacturing a spring material, has longer service life, and does not have the problem of brittle failure under extremely bad conditions. And the cost performance is high, and the method is suitable for large-area popularization and use in the field of industrial manufacturing.
Drawings
FIG. 1 is a schematic view of a cylinder structure according to the present invention;
FIG. 2 is a schematic structural view of the slave cylinder assembly of the present invention;
FIG. 3-a is a schematic view of a flow distribution ring configuration of the present invention;
FIG. 3-b is a cross-sectional view A-A of FIG. 3-a;
FIG. 4 is a schematic diagram of the master cylinder structure of the present invention;
FIG. 5-a is a schematic view of the design of the oil passage of the cylinder according to the present invention;
FIG. 5-b is a cross-sectional view A-A of FIG. 5-a;
wherein, 1-clutch master cylinder; 2-a piston; 3-L-shaped sealing rings; 4-an elastic member; 5-O type sealing ring; 6-clutch auxiliary oil cylinder assembly; 6-1-a radial oil passage of the main oil cylinder; 6-2-main oil cylinder axial oil duct; 6-3-radial oil passage of the auxiliary oil cylinder; 7-bolt; 8-clutch slave cylinder; 9-flow distribution ring; 9-1-a splitter box; 9-2-crescent groove; 9-3-rectangular groove; 9-4-oil blocking; 10-positioning pin.
Detailed Description
For a better understanding of the present invention, the technical solutions of the present invention will be described in further detail below with reference to the accompanying drawings.
As shown in fig. 1 to 5, the cylinder of a wet multiplate clutch according to the present invention includes: the clutch auxiliary oil cylinder assembly 6, the clutch main oil cylinder 1, the piston 2 and the elastic element 4; the clutch auxiliary oil cylinder assembly 6 and the clutch main oil cylinder 1 are sequentially and radially arranged on the outer side of the clutch bearing and fixedly connected; one end of the piston 2 is connected with the clutch auxiliary oil cylinder assembly 6, and the other end of the piston is connected with the clutch main oil cylinder 1; lubricating oil is filled in a cavity formed by the clutch auxiliary oil cylinder assembly 6 and the piston 2, and the elastic part 4 is arranged in the cavity; the cavity formed by the clutch master cylinder 1 and the piston 2 is communicated with operating pressure oil;
the clutch slave cylinder assembly 6 includes: the clutch auxiliary oil cylinder 8, the flow distribution ring 9 and the positioning pin 10; the flow distribution ring 9 is radially arranged between the clutch auxiliary oil cylinder 8 and the piston 2, and the circumferential position of the flow distribution ring 9 is fixed through a positioning pin 10;
a hole for passing the operating pressure oil is arranged on the clutch auxiliary oil cylinder 8; a hole for lubricating oil to pass through is formed in the clutch auxiliary oil cylinder 8; the distribution ring 9 includes: the distribution flow groove group is annularly arranged on the ring body; the flow distribution groove group includes: two component circulation grooves which are vertically arranged, wherein one component circulation groove is communicated with the hole of the clutch master cylinder 1 to form a master cylinder oil passage, and the other component circulation groove is communicated with the hole of the clutch slave cylinder 8 to form a slave cylinder oil passage;
The main cylinder oil passage includes: the main oil cylinder radial oil duct 6-1 is radially arranged on the clutch auxiliary oil cylinder 8, and the main oil cylinder axial oil duct 6-2 is axially arranged on the clutch auxiliary oil cylinder 8 and is communicated with the main oil cylinder radial oil duct 6-1; the sub-cylinder oil passage includes: the auxiliary oil cylinder radial oil duct 6-3 is radially arranged on the clutch auxiliary oil cylinder 8 and is communicated with the clutch auxiliary oil cylinder 8; the radial oil ducts 6-1 of the main oil cylinder are divided into two groups, each group comprises 2 oil ducts, and the 2 oil ducts of each group are symmetrically arranged; the number of the radial oil passages 6-1 of the main oil cylinder is 4, and the radial oil passages are uniformly distributed along the circumferential direction of the clutch auxiliary oil cylinder 8; the number of the radial oil passages 6-3 of the auxiliary oil cylinder is 2, and the radial oil passages are uniformly distributed along the circumferential direction of the clutch auxiliary oil cylinder 8 and can also be symmetrically arranged;
each group of the shunting through grooves respectively consists of two shunting grooves 9-1 which are symmetrically arranged; the diverter tank 9-1 comprises: a crescent collecting groove 9-2 arranged on the inner wall of the ring body and a rectangular circulating groove 9-3 communicated with the crescent collecting groove 9-2; the auxiliary oil cylinder radial oil passage and the main oil cylinder radial oil passage are communicated with the clutch auxiliary oil cylinder 8 and the clutch main oil cylinder 1 respectively through a crescent collecting groove 9-2 of the diversion groove 9-1; one end of the main oil cylinder axial oil passage is provided with an oil plug 9-4, and the other end of the main oil cylinder axial oil passage is the outer edge of the auxiliary oil cylinder 8;
The clutch auxiliary oil cylinder assembly 6 is fixedly connected with the main oil cylinder 1 through an axially arranged bolt 7;
the bolts 7 are circumferentially arranged and at least 16 in number;
the hydro-cylinder still includes: an O-shaped sealing ring 5 and an L-shaped sealing ring 3; the O-shaped sealing ring 5 is radially arranged between the flow distribution ring 9 and the piston 2; the number of the L-shaped sealing rings 3 is 2, one L-shaped sealing element 3 is radially arranged between the clutch auxiliary oil cylinder 8 and the piston 2, and the other L-shaped sealing element 3 is radially arranged between the clutch main oil cylinder 1 and the piston 2;
the sizes of the inner diameter and the outer diameter of the clutch auxiliary oil cylinder 8 and the clutch main oil cylinder 1 are the same;
the elastic part 4 is a spiral spring; the elastic part 4 is prepared from the following components in percentage by mass: c: 0.21%, Mn: 0.55%, Si: 1.1%, Cr: 0.10%, Nb: 0.03%, V: 0.04%, Ti: 0.09%, Al: 0.11%, the balance being Fe and non-removable impurities; the elastic part 4 is subjected to heating, forming, waste heat quenching and medium temperature tempering, and finally the final shape of the product is formed; the spring has good elasticity, is suitable for normal work under a load environment, has higher yield strength for manufacturing spring materials, has longer service life, and can not have the problem of brittle failure under extremely bad conditions. The performance-price ratio is high, and the method is suitable for large-area popularization and use in the field of industrial manufacturing;
The O-shaped sealing ring 5 and the L-shaped sealing ring 3 are respectively prepared from the following components in parts by weight: chloroprene rubber CR 244285 parts, light carbon black AB 77025 parts, anti-aging agent MB 5 parts, dicumyl peroxide 1.0 part, phenyl triethoxysilane 3.4 parts, antioxidant 10352.2 parts, modified iron ore tailings 4.5 parts, propylene glycol sebacate polyester 1.2 parts and peregal O2.5 parts.
As shown in fig. 1, the main cylinder 1 and the auxiliary cylinder 8 have the same inner and outer diameter, so that centrifugal oil pressure generated in the rotary cylinder can be avoided, the centrifugal oil pressure influences the combination and separation of the clutch, and generates interference and influence on buffer control oil pressure, which influences the smoothness of gear shifting, leads to the increase of the sliding friction work and the sliding friction power, and reduces the service life of the clutch;
the auxiliary oil cylinder 8 and the piston 2 are correspondingly provided with counter bores, the spiral elastic piece 4 is installed, and the pre-tightening length of the spiral elastic piece 4 is adjusted by controlling the size tolerance of the size chain; the return initial compression amount of the elastic part 4 after pre-tightening is the displacement of the actual movement of the clutch piston 2, is related to the sizes of the piston 2, the oil cylinder and the friction pair, and the return initial length is adjusted by controlling the size tolerance of the size chain; finally, considering the stress area of the piston 2, the axial return pressure of the elastic element 4 acting on the piston 2 is 0.12-0.15 Mpa, when the clutch is combined, the pressure has little influence on the operating oil pressure in the main oil cylinder 1, when the clutch is separated, the pressure can ensure that the piston 2 can return quickly and reliably, and the response is quick and the impact is small;
Lubricating oil is introduced into a cavity formed by the clutch auxiliary oil cylinder assembly 6 and the piston 2, so that the centrifugal oil pressure of the main oil cylinder 1 is balanced, and the lubricating oil pressure assists the piston 2 to return. The two functions are realized by communicating the lubricating oil path, and the clutch control device has the advantages that one path of return control oil is reduced, one path of oil path is structurally reduced, the structure is simplified, the axial space of the clutch is shortened, the structure of the control valve is simplified in the aspect of clutch control, control links are reduced, and the realization of accurate control is facilitated.
As shown in fig. 2 to 3, fig. 3-a is a schematic view of a flow-distribution ring structure of the present invention, and fig. 3-b is a sectional view a-a of fig. 3-a; the flow distribution ring provided by the invention is arranged on the auxiliary oil cylinder 8, is aligned with an oil passage, and is positioned at the circumferential position by using a positioning pin 10. The flow distribution ring is matched with the auxiliary oil cylinder 8 in a H6/n6 mode, the center position of the positioning pin 10 is located on the matching diameter, the flow distribution ring and the auxiliary oil cylinder 8 are combined and then matched with a positioning pin hole, the positioning pin 10 is installed, and the matching size is H7/n 6; the radial oil way of the clutch combining and separating operation oil way is divided circumferentially by the flow distribution ring; an oil plug 9-4 is also arranged on the auxiliary oil cylinder 8; the main body structure of the flow distribution ring is a thin-wall circular ring, the flow distribution groove 9-1 consists of a crescent groove 9-2 and a rectangular groove 9-3, and the two groups of flow distribution rings are symmetrically and uniformly distributed and respectively correspond to different oil ducts.
In particular, the method for preparing the coating solution,
as shown in fig. 1, the oil cylinder of the clutch provided by this embodiment includes a clutch master cylinder 1, a clutch slave cylinder assembly, a bolt 7, an elastic member 4, an L-shaped seal ring 3, an O-shaped seal ring 5, and a positioning pin 10; the bolt 7 is connected with the clutch main oil cylinder 1 and the clutch auxiliary oil cylinder assembly; the elastic part 4 can adopt a spiral spring, and the elastic part 4 plays a role in assisting the return; the L-shaped sealing ring 3 and the O-shaped sealing ring 5 play a role in sealing; the oil cylinder of the clutch is supported on an outer hub (box body) of the planetary speed change mechanism through a deep groove ball bearing, and a bearing support inner hole is combined and processed after the clutch main oil cylinder 1 and the clutch auxiliary oil cylinder assembly 6 are connected and assembled through bolts; the sizes of the inner diameter and the outer diameter of a cavity formed by the clutch main oil cylinder 1 and the clutch auxiliary oil cylinder assembly 6 and the piston 2 are the same, and an oil way is reduced compared with that of the return of control pressure oil by adopting a combined return mode of lubricating oil and a spiral spring; the bearing support inner hole of the clutch is processed in a combined mode, so that stable support of the main oil cylinder and the auxiliary oil cylinder is guaranteed, bearing damage caused by the fact that radial play of the bearing is eliminated by uneven stress in a high-speed rotating state is prevented, and reliability of the clutch is improved; the balanced clutch of the main oil cylinder and the auxiliary oil cylinder effectively avoids the influence of centrifugal oil pressure, the centrifugal oil pressure influences the combination and separation of the clutch, the interference and the influence are generated on buffer control oil pressure, the smoothness of gear shifting is influenced, the smooth grinding function and the smooth grinding power are increased, the service life of the clutch is reduced, the structure avoids the influence of the centrifugal oil pressure on the gear shifting dynamic performance of the clutch particularly at high rotating speed, the convenient control and calibration of the clutch are realized, the gear shifting dynamic impact load of a planetary speed change mechanism is greatly reduced, and the acceleration performance and the smoothness of a vehicle are improved; the lubricating oil and the spiral spring are combined to return and are in a clutch flow distribution structure, the structure is simple, compact and reliable, the width-diameter ratio of the clutch is greatly reduced from 0.30-0.35 to 0.17-0.20, and the axial size and the volume of the clutch are reduced;
The method comprises the following steps of performing primary and secondary oil cylinder reference fine adjustment and combined machining design, taking an end face F and an inner hole D of a secondary oil cylinder as design and machining references, when the primary and secondary oil cylinders are combined, using the reference D and the end face reference A as assistance, performing radial fine adjustment, ensuring that the jumping of the primary oil cylinder reference A relative to the reference D is not more than phi 0.03mm, realizing the precise combination of the primary and secondary oil cylinders, and machining and supporting the inner hole to a design size after the combination;
mounting a spiral spring through controlling the size tolerance of the size chain and adjusting the pre-tightening length of the spring by using counter bores corresponding to the clutch slave cylinder 8 and the piston 2; the initial return compression amount of the spring after pre-tightening is the actual movement displacement of the clutch piston and is related to the sizes of the piston 2, the oil cylinder and the friction pair, and the initial return length is adjusted by controlling the size tolerance of the size chain; finally, considering the stress area of the piston 2, the axial return pressure acted on the piston by the spring is 0.12-0.15 Mpa, when the clutch is combined, the pressure has small influence on the oil pressure of the operating pressure oil in the main oil cylinder, when the clutch is separated, the pressure can ensure that the piston can return quickly and reliably, and the response is quick and the impact is small;
lubricating oil is filled in a cavity formed by the clutch auxiliary oil cylinder assembly 6 and the piston 2, so that the centrifugal oil pressure of the main oil cylinder is balanced, and the lubricating oil pressure assists the piston 2 to return; the two functions are realized by communicating the lubricating oil passages, and the clutch control device has the advantages that one path of return control oil is reduced, one path of oil passage is structurally reduced, the structure is simplified, the axial space of the clutch is shortened, the structure of the control valve is simplified in the aspect of clutch control, control links are reduced, and the realization of accurate control is facilitated.
As shown in fig. 2, the clutch slave cylinder assembly provided by the present embodiment includes a clutch slave cylinder 8, a flow distribution ring 9, and a positioning pin 10; the flow distribution ring 9 and the clutch auxiliary oil cylinder 8 are matched with each other by H6/n6, after the assembly is finished, positioning pin holes are combined and machined, semicircular holes are formed in the clutch auxiliary oil cylinder 8 and the flow distribution ring 9 respectively, then the positioning pin 10 is installed, the matching size of the pin holes and the positioning pin 10 is H7/n6, the positioning pin 10 fixes the circumferential position of the flow distribution ring 9, and the oil circuit is ensured to be communicated;
as shown in fig. 3, the flow distribution ring 9 provided in this embodiment implements oil passage structures of the clutch main oil cylinder and the clutch sub oil cylinder, and the flow distribution ring 9 is installed on the CH sub oil cylinder, and has four sets of crescent grooves 9-2 and rectangular grooves 9-3, which are symmetrically and uniformly distributed in two groups and respectively correspond to radial oil passages on the clutch sub oil cylinder 8.
As shown in FIG. 5, FIG. 5-a is a schematic view of the design of the oil passages of the cylinder of the present invention, and FIG. 5-b is a cross-sectional view taken along line A-A of FIG. 5-a; the two sets of oil ducts on the clutch slave cylinder 8 provided by the embodiment are respectively communicated with the clutch master cylinder and the clutch slave cylinder; the oil duct of the clutch main oil cylinder 1 consists of an axial hole and a radial hole and is communicated with the operating pressure oil, the oil duct is uniformly distributed along the circumferential direction, the oil cylinder is uniformly stressed, and the eccentricity of the oil cylinder caused by the pressure on one side is avoided; the oil duct leading to the clutch slave cylinder 8 is a radial hole and is communicated with lubricating oil; and 4 paths of phi 6 radial oil ducts, 4 paths of phi 6 radial oil ducts positioned on two sides of the vertical line are control pressure oil ducts leading to an oil cavity of the main oil cylinder of the clutch, and 2 paths of phi 6 radial oil ducts positioned on the horizontal side are lubricating oil ducts leading to an oil cavity of the auxiliary oil cylinder of the clutch, and the radial oil ducts are divided into two groups and symmetrically arranged.
The present invention is not limited to the above embodiments, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention are included in the scope of the claims of the present invention which are filed as the application.
Claims (9)
1. An oil cylinder of a wet type gear shifting clutch is characterized in that,
the hydro-cylinder includes: the clutch auxiliary oil cylinder assembly (6), the clutch main oil cylinder (1), the piston (2) and the elastic piece (4);
the clutch auxiliary oil cylinder assembly (6) and the clutch main oil cylinder (1) are sequentially and radially arranged on the outer side of the clutch bearing and fixedly connected;
one end of the piston (2) is connected with the clutch auxiliary oil cylinder assembly (6), and the other end of the piston is connected with the clutch main oil cylinder (1);
lubricating oil is introduced into a cavity formed by the clutch auxiliary oil cylinder assembly (6) and the piston (2), and the elastic part (4) is arranged in the cavity;
the cavity formed by the clutch master cylinder (1) and the piston (2) is communicated with operating pressure oil;
the clutch slave cylinder assembly (6) comprises: the clutch auxiliary oil cylinder (8), the flow distribution ring (9) and the positioning pin (10);
the flow distribution ring (9) is radially arranged between the clutch auxiliary oil cylinder (8) and the piston (2), and the circumferential position of the flow distribution ring (9) is fixed through a positioning pin (10);
A hole for the operating pressure oil to pass through is arranged on the clutch auxiliary oil cylinder (8);
a hole for lubricating oil to pass through is arranged on the clutch auxiliary oil cylinder (8);
the distribution ring (9) comprises: the distribution flow groove group is annularly arranged on the ring body;
the flow distribution groove group includes: two groups of circulation grooves which are perpendicular to each other are arranged, wherein one group of the circulation grooves is communicated with the hole of the clutch master cylinder (1) to form a master cylinder oil passage, and the other group of the circulation grooves is communicated with the hole of the clutch slave cylinder (8) to form a slave cylinder oil passage;
the main cylinder oil passage includes: the main oil cylinder radial oil duct (6-1) is radially arranged on the clutch auxiliary oil cylinder (8), and the main oil cylinder axial oil duct (6-2) is axially arranged on the clutch auxiliary oil cylinder (8) and is communicated with the main oil cylinder radial oil duct (6-1);
the sub-cylinder oil passage includes: the auxiliary oil cylinder radial oil duct (6-3) is radially arranged on the clutch auxiliary oil cylinder (8), and the auxiliary oil cylinder radial oil duct is communicated with the clutch auxiliary oil cylinder (8);
the number of the radial oil passages (6-1) of the main oil cylinder is 4, and the radial oil passages are symmetrically arranged along the circumferential direction of the clutch auxiliary oil cylinder (8);
The number of the radial oil passages (6-3) of the auxiliary oil cylinder is 2, and the radial oil passages are uniformly distributed along the circumferential direction of the clutch auxiliary oil cylinder (8).
2. The cylinder of a wet shift clutch according to claim 1,
each group of the shunting through grooves respectively consists of two shunting grooves (9-1) which are symmetrically arranged;
the diverter tank (9-1) comprises: a crescent collecting groove (9-2) arranged on the inner wall of the ring body and a rectangular circulating groove (9-3) communicated with the crescent collecting groove (9-2);
the auxiliary oil cylinder radial oil passage and the main oil cylinder radial oil passage are respectively communicated with the clutch auxiliary oil cylinder (8) and the clutch main oil cylinder (1) through a crescent collecting groove (9-2) of the splitter box (9-1);
one end of the main oil cylinder axial oil passage is provided with an oil plug (9-4), and the other end of the main oil cylinder axial oil passage is the outer edge of the clutch auxiliary oil cylinder (8).
3. The cylinder of a wet shift clutch according to claim 1,
the clutch auxiliary oil cylinder assembly (6) is fixedly connected with the clutch main oil cylinder (1) through an axially arranged bolt (7).
4. The oil cylinder of a wet shift clutch according to claim 3,
The bolts (7) are circumferentially arranged and at least 16 in number.
5. The cylinder of a wet shift clutch according to claim 1,
the hydro-cylinder still includes: an O-shaped sealing ring (5) and an L-shaped sealing ring (3);
the O-shaped sealing ring (5) is radially arranged between the flow distribution ring (9) and the piston (2);
the number of the L-shaped sealing rings (3) is 2, one of the L-shaped sealing rings (3) is radially arranged between the clutch auxiliary oil cylinder (8) and the piston (2), and the other L-shaped sealing ring (3) is radially arranged between the clutch main oil cylinder (1) and the piston (2).
6. The cylinder of a wet shift clutch according to claim 1,
the clutch auxiliary oil cylinder assembly (6) and the clutch main oil cylinder (1) are the same as the inner diameter and the outer diameter of a cavity formed by the piston (2).
7. The cylinder of a wet shift clutch according to claim 1,
the elastic piece (4) is a spiral spring.
8. The cylinder of a wet shift clutch according to claim 1,
the elastic part (4) is prepared from the following components in percentage by mass: c: 0.21%, Mn: 0.55%, Si: 1.1%, Cr: 0.10%, Nb: 0.03%, V: 0.04%, Ti: 0.09%, Al: 0.11%, the balance being Fe and irremovable impurities.
9. The oil cylinder of a wet shift clutch according to claim 5,
the O-shaped sealing ring (5) and the L-shaped sealing ring (3) are respectively prepared from the following components in parts by weight: chloroprene rubber CR 244285 parts, light carbon black AB 77025 parts, anti-aging agent MB 5 parts, dicumyl peroxide 1.0 part, phenyl triethoxysilane 3.4 parts, antioxidant 10352.2 parts, modified iron ore tailings 4.5 parts, propylene glycol sebacate polyester 1.2 parts and peregal O2.5 parts.
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