CN114179767A - Retarding system and vehicle transmission system thereof - Google Patents
Retarding system and vehicle transmission system thereof Download PDFInfo
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- CN114179767A CN114179767A CN202111672609.XA CN202111672609A CN114179767A CN 114179767 A CN114179767 A CN 114179767A CN 202111672609 A CN202111672609 A CN 202111672609A CN 114179767 A CN114179767 A CN 114179767A
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- 230000000979 retarding effect Effects 0.000 title claims abstract description 27
- 230000005540 biological transmission Effects 0.000 title claims abstract description 8
- 239000003921 oil Substances 0.000 claims abstract description 277
- 238000006073 displacement reaction Methods 0.000 claims abstract description 78
- 239000010687 lubricating oil Substances 0.000 claims abstract description 42
- 230000001050 lubricating effect Effects 0.000 claims description 11
- 238000005461 lubrication Methods 0.000 claims description 7
- 230000000694 effects Effects 0.000 claims description 3
- 230000009467 reduction Effects 0.000 claims description 3
- 238000009423 ventilation Methods 0.000 abstract description 5
- 239000000203 mixture Substances 0.000 abstract description 3
- 230000009347 mechanical transmission Effects 0.000 abstract description 2
- 239000007853 buffer solution Substances 0.000 abstract 1
- 239000012530 fluid Substances 0.000 description 6
- 239000007921 spray Substances 0.000 description 5
- 239000010724 circulating oil Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 206010039203 Road traffic accident Diseases 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000005562 fading Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T10/00—Control or regulation for continuous braking making use of fluid or powdered medium, e.g. for use when descending a long slope
- B60T10/04—Control or regulation for continuous braking making use of fluid or powdered medium, e.g. for use when descending a long slope with hydrostatic brake
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
- B60T13/12—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being liquid
- B60T13/14—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being liquid using accumulators or reservoirs fed by pumps
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
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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
- F16N—LUBRICATING
- F16N21/00—Conduits; Junctions; Fittings for lubrication apertures
- F16N21/02—Lubricating nipples
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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
- F16N—LUBRICATING
- F16N23/00—Special adaptations of check valves
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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
- F16N—LUBRICATING
- F16N7/00—Arrangements for supplying oil or unspecified lubricant from a stationary reservoir or the equivalent in or on the machine or member to be lubricated
- F16N7/38—Arrangements for supplying oil or unspecified lubricant from a stationary reservoir or the equivalent in or on the machine or member to be lubricated with a separate pump; Central lubrication systems
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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
- F16N—LUBRICATING
- F16N2280/00—Valves
- F16N2280/02—Valves electromagnetically operated
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transportation (AREA)
- Braking Arrangements (AREA)
Abstract
The invention relates to the technical field of mechanical transmission, in particular to a retarding system and a vehicle transmission system thereof. This a retarder system includes: the device comprises an oil storage tank, a displacement pump mechanical structure, an auxiliary pump, a two-position five-way electromagnetic valve, a slow circulation oil path, an unloading oil path, a lubricating oil path and an air pipeline; the vehicle transmission system at least comprises the buffer system; each working link can be realized by controlling the on-off of the oil path, each oil path can be adaptively coiled according to the use working condition, the structure is simple, the layout is compact, and the necessary space occupied by the retarding equipment is effectively reduced; furthermore, the two-position five-way valve is used for switching the states of the ventilation pipeline, the ventilation pipeline is effectively integrated with the switching of the loading state and the no-load state of the mechanical structure of the displacement pump, two instructions of an oil path and an air path are simultaneously completed through one-time regulation and control operation, the use is convenient, and meanwhile, the structural composition of the retarding equipment is further simplified.
Description
Technical Field
The invention relates to the technical field of mechanical transmission, in particular to a retarding system and a vehicle transmission system thereof.
Background
Urban road intersections are many, bus stops are dense, passenger flow is large, and buses are frequently braked; the mountain roads are steep and have many sharp bends, and medium and large trucks and buses running on the mountain road section for a long time also need to be braked frequently.
Under the condition of long-time frequent work, the brake shoes are quickly worn, the service life of the brake friction plates is short, and the loss of braking force or great reduction of braking performance is caused by the heat fading of the brake, which also becomes the main cause of traffic accidents. Therefore, it is necessary to equip an auxiliary braking system.
The retarder is used as an auxiliary braking component of the vehicle, reduces the load of the braking system of the original vehicle by acting on the transmission system of the original vehicle, enables the vehicle to uniformly decelerate, improves the reliability of the braking system of the vehicle, prolongs the service life of the braking system, and can greatly reduce the use cost of the vehicle.
At present, a common retarder is complex in structure, complex in control process and inconvenient to use.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the existing retarding equipment has more control electromagnetic valves and higher cost, and realizes the functions which can be realized only by the original 3 two-position one-way valves through a two-position three-way valve.
(II) technical scheme
In order to solve the above technical problem, an embodiment of an aspect of the present invention provides a retarding system, including: the device comprises an oil storage tank, a displacement pump mechanical structure, an auxiliary pump, a two-position five-way electromagnetic valve, a slow circulation oil path, an unloading oil path, a lubricating oil path and an air pipeline;
the oil storage tank stores oil;
the volume pump mechanical structure comprises a rotor and a stator, the rotor is connected with a part to be retarded, and when the volume pump mechanical structure is loaded, after oil is filled in the volume pump mechanical structure, the volume pump mechanical structure operates to form a low-pressure cavity and a high-pressure cavity, and resistance is generated due to pressure difference to realize retarded braking;
the slow speed circulating oil way comprises a first oil inlet way and a first oil outlet way, the first oil inlet way is used for communicating a first oil inlet of the displacement pump mechanical structure with the oil storage tank, and the first oil outlet way is used for communicating a first oil outlet of the displacement pump mechanical structure with the oil tank;
the unloading oil path communicates a first oil inlet and a first oil outlet of the positive displacement pump mechanical structure, the lubricating oil path communicates the auxiliary pump with a lubricating system, and the air path communicates the first oil inlet of the positive displacement pump mechanical structure with air;
the unloading oil way comprises an unloading one-way oil way, an unloading two-way oil way and an unloading valve, and the lubricating oil way comprises a lubricating one-way oil way and a lubricating two-way oil way;
the two-position five-way electromagnetic valve comprises a first control oil way which is communicated with the oil storage tank; the second control oil way is communicated with the first oil inlet; the auxiliary oil inlet path is communicated with an auxiliary pump; the auxiliary oil outlet passage is communicated with the one-way control oil passage, the unloading control oil passage, the first lubricating oil passage and the second lubricating oil passage;
the first control oil way is communicated with the auxiliary oil inlet way to communicate the oil storage tank with the auxiliary pump; the air pipeline is in a closed state; the auxiliary pump pumps oil in the oil storage tank to the displacement pump mechanical structure for lubrication;
in a second working position of the two-position five-way electromagnetic valve, the second control oil way is communicated with the auxiliary oil inlet way to communicate the auxiliary pump with the displacement pump mechanical structure; the air pipeline is communicated with air; the auxiliary pump pumps oil in the mechanical structure of the displacement pump to the oil storage tank for unloading.
In an alternative embodiment, the first lubricating oil passage is connected in parallel with the second lubricating oil passage; the lubricating oil path is connected with a first oil inlet of the positive displacement pump mechanical structure, and the lubricating oil path is connected with an oil seal of the positive displacement pump mechanical structure.
In an alternative embodiment, an oil spray head is arranged at the outlet of the lubricating oil path.
In an alternative embodiment, the number of the oil spray heads is more than two.
In an optional embodiment, an unloading valve is arranged on the unloading oil path, and the unloading valve is a normally open valve;
in an optional embodiment, the unloading valve is opened, the unloading one oil way is communicated with the first oil inlet, and the unloading two oil way is communicated with the first oil outlet;
when the retarding system is in a retarding operation state, the unloading valve is closed, and a first oil inlet and a first oil outlet of the displacement pump mechanical structure are separated.
In an alternative embodiment, the unloading valve is a pressure control valve.
In an optional embodiment, a porous plate is further arranged outside the first oil outlet of the positive displacement pump mechanical structure, and the porous plate has a flow interception effect; when the displacement pump mechanical structure carries out the operation of slowing down, the perforated plate reinforcing the hydraulic strength of displacement pump mechanical structure's first delivery port department, and then reinforcing slows down the braking force.
In an optional implementation manner, an oil inlet check valve is arranged on the first oil inlet path.
In an alternative embodiment, the oil inlet check valve is a pressure control valve.
The invention has the advantages of high efficiency.
The invention provides a retarding system, comprising: the method comprises the following steps: the device comprises an oil storage tank, a displacement pump mechanical structure, an auxiliary pump, a two-position five-way electromagnetic valve, a slow circulation oil path, an unloading oil path, a lubricating oil path and an air pipeline; the oil storage tank stores oil; the volume pump mechanical structure comprises a rotor and a stator, the rotor is connected with a part to be retarded, and when the volume pump mechanical structure is loaded, after oil is filled in the volume pump mechanical structure, the volume pump mechanical structure operates to form a low-pressure cavity and a high-pressure cavity, and resistance is generated due to pressure difference to realize retarded braking; the slow speed circulating oil way comprises a first oil inlet way and a first oil outlet way, the first oil inlet way is used for communicating a first oil inlet of the displacement pump mechanical structure with the oil storage tank, and the first oil outlet way is used for communicating a first oil outlet of the displacement pump mechanical structure with the oil tank; the unloading oil path communicates a first oil inlet and a first oil outlet of the positive displacement pump mechanical structure, the lubricating oil path communicates the auxiliary pump with a lubricating system, and the air path communicates the first oil inlet of the positive displacement pump mechanical structure with air; the unloading oil way comprises an unloading one-way oil way, an unloading two-way oil way and an unloading valve, and the lubricating oil way comprises a lubricating one-way oil way and a lubricating two-way oil way; the two-position five-way electromagnetic valve comprises a first control oil way which is communicated with the oil storage tank; the second control oil way is communicated with the first oil inlet; the auxiliary oil inlet path is communicated with an auxiliary pump; the auxiliary oil outlet passage is communicated with the one-way control oil passage, the unloading control oil passage, the first lubricating oil passage and the second lubricating oil passage; the first control oil way is communicated with the auxiliary oil inlet way to communicate the oil storage tank with the auxiliary pump; the air pipeline is in a closed state; the auxiliary pump pumps oil in the oil storage tank to the displacement pump mechanical structure for lubrication; in a second working position of the two-position five-way electromagnetic valve, the second control oil way is communicated with the auxiliary oil inlet way to communicate the auxiliary pump with the displacement pump mechanical structure; the air pipeline is communicated with air; the auxiliary pump pumps oil in the mechanical structure of the displacement pump to the oil storage tank for unloading.
In the retarding system provided by the invention, the mechanical structure of the displacement pump is integrally connected with a part to be retarded, each working link can be realized by controlling the on-off of an oil path, each oil path can be adaptively coiled according to the use working condition, the structure is simple, the layout is compact, and the necessary space occupied by retarding equipment is effectively reduced; furthermore, the two-position five-way valve is used for switching the states of the ventilation pipeline, the buffer operation of the displacement pump mechanical structure and the switching of the no-load state of the displacement pump mechanical structure are effectively integrated, two instructions of an oil path and an air path are completed simultaneously through one-time regulation and control operation, the use is convenient, and meanwhile, the structural composition of the retarding equipment is further simplified.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic structural diagram of a retarding system according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a two-position five-way solenoid valve according to an embodiment of the present invention.
Icon:
1-an oil storage tank;
2-volumetric pump mechanical structure; 21-a first oil inlet; 22-a first oil outlet;
3-an auxiliary pump;
4-two-position five-way electromagnetic valve; 41-a first control oil path; 42-second control oil circuit; 43-auxiliary oil inlet path; 44-auxiliary oil outlet; 45-one-way control oil way; 46-unloading control oil way;
5-a slow speed circulation oil way; 51-a first oil inlet path; 52-first oil outlet; 53-perforated plates; 54-an oil inlet check valve;
6-unloading oil way; 61-unloading an oil way; 62-unloading two oil ways; 63-an unloading valve;
7-lubricating oil path; 71-lubricating an oil path; 72-lubricating two oil ways; 73-a proportional valve;
8-an air line;
9-heat exchanger.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, the present invention will be described in further detail below with reference to the accompanying drawings and detailed description, and the embodiments and features of the embodiments of the present application may be combined with each other without conflict. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1 and fig. 2, an embodiment of the present invention provides a retarder system, including: the device comprises an oil storage tank 1, a positive displacement pump mechanical structure 2, an auxiliary pump 3, a two-position five-way electromagnetic valve 4, a slow speed circulating oil path 5, an unloading oil path 6, a lubricating oil path 7 and an air pipeline 8;
the oil storage tank 1 stores oil;
the displacement pump mechanical structure 2 comprises a rotor and a stator, the rotor is connected with a part to be retarded, when loading is carried out, after oil is filled in the displacement pump mechanical structure 2, the displacement pump mechanical structure 2 operates to form a low-pressure cavity and a high-pressure cavity, resistance is generated due to pressure difference, and retarded braking is realized;
the slow speed circulation oil path 5 comprises a first oil inlet path 51 and a first oil outlet path 52, the first oil inlet path 51 communicates the first oil inlet 21 of the positive displacement pump mechanical structure 2 with the oil storage tank 1, and the first oil outlet path 52 communicates the first oil outlet 22 of the positive displacement pump mechanical structure 2 with the oil storage tank;
the unloading oil path 6 communicates a first oil inlet 21 and a first oil outlet 22 of the positive displacement pump mechanical structure 2, the lubricating oil path 7 communicates the auxiliary pump 3 with a lubricating system, and the air line 8 communicates the first oil inlet 21 of the positive displacement pump mechanical structure 2 with air;
the unloading oil way 6 comprises an unloading one-way oil way 61, an unloading two-way oil way 62 and an unloading valve 63, and the lubricating oil way 7 comprises a lubricating one-way oil way 71 and a lubricating two-way oil way 72;
the two-position five-way electromagnetic valve 4 comprises a first control oil way 41 and is communicated with the oil storage tank 1; the second control oil path 42 is communicated with the first oil inlet 21; the auxiliary oil inlet path 43 is communicated with the auxiliary pump 3; the auxiliary oil outlet passage 44 is communicated with the one-way control oil passage 45, the unloading control oil passage 46, the first lubricating oil passage 71 and the second lubricating oil passage 72.
In the first working position of the two-position five-way electromagnetic valve 4, the first control oil path 41 is communicated with the auxiliary oil inlet path 43 to communicate the oil storage tank 1 with the auxiliary pump 3; the air pipeline 8 is in a closed state; the auxiliary pump 3 pumps oil in the oil storage tank 1 to the displacement pump mechanical structure 2 for lubrication;
in the second working position of the two-position five-way electromagnetic valve 4, the second control oil path 42 is communicated with the auxiliary oil inlet path 43, so that the auxiliary pump 3 is communicated with the displacement pump mechanical structure 2; the air pipeline 8 is communicated with air; the auxiliary pump 3 pumps oil in the displacement pump mechanical structure 2 to the oil storage tank 1 for unloading.
In the retarding system provided by the invention, the displacement pump mechanical structure 2 is integrally connected with a part to be retarded, each working link can be realized by controlling the on-off of an oil path, each oil path can be adaptively coiled according to the use working condition, the structure is simple, the layout is compact, and the necessary space occupied by retarding equipment is effectively reduced; furthermore, the two-position five-way valve is used for switching the states of the ventilation pipeline, the ventilation pipeline is effectively integrated with the buffer operation of the displacement pump mechanical structure 2 and the switching of the no-load state of the displacement pump mechanical structure 2, two instructions of an oil path and an air path are completed simultaneously through one-time regulation and control operation, the use is convenient, and meanwhile, the structural composition of the speed reducing equipment is further simplified.
Specifically, the liquid of oil storage tank 1 deposit is lubricating oil, can reduce the frictional force between each part in the equipment operation, and lubricating oil can accomplish a liquid dual-purpose, can regard as promptly the working medium of the slow speed operation of displacement pump mechanical structure 2 can regard as again lubricating oil 7's lubricating medium need not to establish two respectively and stores up the facility, and oil pipeline can be shared, and overall structure is simpler, compact.
As an alternative embodiment of the present invention, the first lubricating oil path 71 is connected in parallel with the second lubricating oil path 72; the second lubricating oil path 72 is connected with the first oil inlet 21 of the displacement pump mechanical structure 2, and the first lubricating oil path 71 is connected with the oil seal of the displacement pump mechanical structure 2.
An oil seal and a bearing matched with a rotor shaft in the volumetric pump mechanical structure 2 are arranged at the port of the volumetric pump mechanical structure 2; a working cavity matched with the rotor is arranged in the displacement pump mechanical structure 2, and the hydraulic strength of different positions of the working cavity is changed in the rotation process of the rotor to form a high-low pressure cavity and generate braking resistance;
the second lubricating oil path 72 is connected with the first oil inlet 21 of the positive displacement pump mechanical structure 2, and the first lubricating oil path 71 is connected with an oil seal of the positive displacement pump mechanical structure 2, so that lubrication is provided for the positive displacement pump mechanical structure 2, and the friction force between the inner parts of the mechanical structure when the positive displacement pump mechanical structure 2 is unloaded is reduced.
As an alternative embodiment of the present invention, an oil spray head is provided at the outlet of the first lubricating oil path 71, and the number of the oil spray heads is at least two; adopt the fluid shower nozzle to spray fluid to the working chamber of displacement pump mechanical structure 2, can make more even of fluid dispersion, under a small amount of fluid carries out lubricated circumstances, can ensure effectively that the rotor is all-round to be adhered to by lubricated fluid, the lubricated effect of lubricated fluid to the rotor.
Specifically, a proportional valve 73 is arranged at the auxiliary pump 3, and when the displacement pump mechanical structure 2 performs a retarding operation, the proportional valve 73 is switched on to control the auxiliary pump 3 to increase the output.
As an optional embodiment of the present invention, an unloading valve 63 is provided on the unloading oil path 6, and the unloading valve 63 is a normally open valve;
when the speed reducing system is in an unloaded state or an unloaded state, the unloading valve 63 is opened, the unloading first oil way 61 is communicated with the first oil inlet 21, and the unloading second oil way 62 is communicated with the first oil outlet 22;
when the retarding system is in a retarding operation state, the unloading valve 63 is closed, and the first oil inlet 21 and the first oil outlet 22 of the positive displacement pump mechanical structure 2 are separated.
An oil inlet check valve 54 is arranged on the first oil inlet path 51.
Specifically, the unloading valve 63 is a pressure control valve, and the oil inlet check valve 54 is a pressure control valve;
the unloading valve 63 is a normally open valve, the unloading control oil path 46 controls the unloading valve 63 to be opened or closed, when the positive displacement pump mechanical structure 2 is switched from an unloaded state to a retarded working state, the pressure of the unloading control oil path 46 is increased, and the unloading valve 63 is controlled to be opened by the pressure of the unloading control oil path 46.
The oil inlet one-way valve 54 is a normally-closed valve, the one-way control oil path 45 controls the oil inlet one-way valve 54 to be switched on and off, when the displacement pump mechanical structure 2 is switched from an idle load state to a slow speed working state, the pressure of the one-way control oil path 45 is increased, and the oil inlet one-way valve 54 is controlled to be opened by the pressure of the one-way control oil path 45.
As an alternative embodiment of the present invention, a porous plate 53 is further disposed outside the first oil outlet 22 of the volumetric pump mechanical structure 2, and the porous plate 53 plays a role in intercepting flow; when the displacement pump mechanical structure 2 performs the retarding operation, the porous plate 53 enhances the hydraulic strength at the first oil outlet 22 of the displacement pump mechanical structure 2, so as to enhance the retarding braking force.
In a specific retarding state, the flow control valve 73 controls the auxiliary pump 3 to increase output, the pressure of the unloading control oil path 46 and the one-way control oil path 45 is increased, the unloading valve 63 is closed, the high-low pressure cavity is disconnected, the oil inlet one-way valve 54 is opened, the oil inlet channel is opened, and the positive displacement pump mechanical structure 2 forms the high-low pressure cavity to form pressure difference and generate braking torque.
When the auxiliary pump 3 is unloaded in a no-load mode, the flow control valve 73 controls the auxiliary pump 3 to reduce output, the pressure of the unloading control oil path 46 and the one-way control oil path 45 is recovered, the unloading valve 63 is opened, the oil inlet one-way valve 54 is closed to disconnect an oil suction channel, the mechanical structure 2 of the displacement pump does not form a high-pressure cavity and a low-pressure cavity, the pressure difference disappears, and the braking torque disappears. The two-position five-way valve 4 is opened, the auxiliary pump 3 is connected with the second control oil path 42, oil in the first oil inlet 21 is discharged, meanwhile, the air pipeline 8 is communicated with air, and the displacement pump mechanical structure 2 is in an air suction state.
In a specific oil supplementing no-load state, when the speed is not slow, the two-position five-way valve 4 is closed, the auxiliary pump 3 is controlled to slowly inject part of oil into the first oil inlet 21 in a low pump capacity mode, and the no-load unloading operation is repeated at intervals, so that the oil circulation cooling in the displacement pump mechanical structure 2 is realized.
As an optional embodiment of the present invention, a heat exchanger 9 is disposed on the slow circulation oil path 5.
In the description of the present invention, it should be noted that the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; the communication may be direct, indirect via an intermediate medium, or internal to both elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. A retarding system, comprising: the device comprises an oil storage tank (1), a positive displacement pump mechanical structure (2), an auxiliary pump (3), a two-position five-way electromagnetic valve (4), a slow circulation oil way (5), an unloading oil way (6), a lubricating oil way (7) and an air pipeline (8);
the oil storage tank (1) stores oil;
the displacement pump mechanical structure (2) comprises a rotor and a stator, the rotor is connected with a part to be retarded, when loading is carried out, after oil is filled in the displacement pump mechanical structure (2), the displacement pump mechanical structure (2) operates to form a low-pressure cavity and a high-pressure cavity, resistance is generated due to pressure difference, and retarded braking is realized;
the retarding circulation oil path (5) comprises a first oil inlet path (51) and a first oil outlet path (52), the first oil inlet path (51) communicates a first oil inlet (21) of the positive displacement pump mechanical structure (2) with the oil storage tank (1), and the first oil outlet path (52) communicates a first oil outlet (22) of the positive displacement pump mechanical structure (2) with the oil tank;
the unloading oil way (6) is used for communicating a first oil inlet (21) and a first oil outlet (22) of the displacement pump mechanical structure (2), the lubricating oil way (7) is used for communicating the auxiliary pump (3) with a lubricating system, and the air pipeline (8) is used for communicating the first oil inlet (21) of the displacement pump mechanical structure (2) with air;
the unloading oil way (6) comprises a first unloading oil way (61), a second unloading oil way (62) and an unloading valve (63), and the lubricating oil way (7) comprises a first lubricating oil way (71) and a second lubricating oil way (72);
the two-position five-way electromagnetic valve (4) comprises a first control oil path (41), a second control oil path (42), an auxiliary oil inlet path (43), an auxiliary oil outlet path (44), a one-way control oil path (45) and an unloading control oil path (46); the first control oil way (41) is communicated with the oil storage tank (1); the second control oil way (42) is communicated with the first oil inlet (21); the auxiliary oil inlet path (43) is communicated with the auxiliary pump (3); the auxiliary oil outlet path (44) is communicated with the one-way control oil path (45), the unloading control oil path (46), the first lubricating oil path (71) and the second lubricating oil path (72);
the first control oil way (41) is communicated with the auxiliary oil inlet way (43) at a first working position of the two-position five-way electromagnetic valve (4), and the oil storage tank (1) is communicated with the auxiliary pump (3); the air pipeline (8) is in a closed state; the auxiliary pump (3) pumps oil in the oil storage tank (1) to the displacement pump mechanical structure (2) for lubrication;
in a second working position of the two-position five-way electromagnetic valve (4), the second control oil way (42) is communicated with the auxiliary oil inlet way (43) to communicate the auxiliary pump (3) with the displacement pump mechanical structure (2); the air pipeline (8) is communicated with air; the auxiliary pump (3) pumps oil in the displacement pump mechanical structure (2) to the oil storage tank (1) for unloading.
2. The retarder system of claim 1, wherein the first lubrication oil passage (71) is connected in parallel with the second lubrication oil passage (72); the second lubricating oil path (72) is connected with a first oil inlet (21) of the positive displacement pump mechanical structure (2), and the first lubricating oil path (71) is connected with an oil seal of the positive displacement pump mechanical structure (2).
3. Retarder system according to claim 2, wherein the outlet of a lubricating-oil channel (71) is provided with oil jets.
4. The retarder system of claim 3, wherein the number of oil jets is two or more.
5. The retarder system according to claim 1, wherein the unloading oil passage (6) comprises a first unloading oil passage (61) and a second unloading oil passage (62);
an unloading valve (63) is arranged on the unloading oil way (6), and the unloading valve (63) is a normally open valve;
when the speed reducing system is in an unloaded state or an unloaded state, the unloading valve (63) is opened, the unloading first oil way (61) is communicated with the first oil inlet (21), and the unloading second oil way (62) is communicated with the first oil outlet (22);
when the retarding system is in a retarding operation state, the unloading valve (63) is closed, and a first oil inlet (21) and a first oil outlet (22) of the displacement pump mechanical structure (2) are separated.
6. The retarder system of claim 5, wherein the unloading valve (63) is a pressure control valve.
7. The retarder system according to claim 1, wherein a porous plate (53) is further provided outside the first oil outlet (22) of the positive displacement pump mechanism (2), the porous plate (53) having a flow-stopping effect; when the displacement pump mechanical structure (2) performs speed reduction operation, the porous plate (53) enhances the hydraulic strength of the first oil outlet (22) of the displacement pump mechanical structure (2), and further enhances the speed reduction braking force.
8. The retarder system of claim 1, wherein the first oil inlet passage (51) is provided with an oil inlet check valve (54).
9. The retarder system of claim 8, wherein the oil feed check valve (54) is a pressure control valve.
10. A vehicle transmission system comprising at least a retarder system according to any of claims 1-9 above;
the power part of the vehicle is in transmission connection with the rotor of the displacement pump mechanical structure (2) to drive the rotor to rotate.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111672609.XA CN114179767B (en) | 2021-12-31 | 2021-12-31 | Retarding system and vehicle transmission system thereof |
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| CN202111672609.XA CN114179767B (en) | 2021-12-31 | 2021-12-31 | Retarding system and vehicle transmission system thereof |
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|---|---|---|---|---|
| US4946014A (en) * | 1988-10-31 | 1990-08-07 | Isuzu Motors Limited | Retarder |
| JP2002053027A (en) * | 2000-08-09 | 2002-02-19 | Kawasaki Heavy Ind Ltd | Negative brake releasing device for construction machine |
| CN101786447A (en) * | 2009-01-22 | 2010-07-28 | 江绍成 | Braking kinetic energy regenerating hydraulic retarder for automobile |
| CN107738637A (en) * | 2017-11-15 | 2018-02-27 | 宁波市鄞州堃信工业产品设计有限公司 | The integrated total pumping system of control of pressure difference side valve type braking clutch |
| CN215244803U (en) * | 2021-06-25 | 2021-12-21 | 上海埃曼流体技术有限公司 | Vehicle braking device |
| CN216734236U (en) * | 2021-12-31 | 2022-06-14 | 富奥汽车零部件股份有限公司 | Retarding system and vehicle transmission system thereof |
-
2021
- 2021-12-31 CN CN202111672609.XA patent/CN114179767B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4946014A (en) * | 1988-10-31 | 1990-08-07 | Isuzu Motors Limited | Retarder |
| JP2002053027A (en) * | 2000-08-09 | 2002-02-19 | Kawasaki Heavy Ind Ltd | Negative brake releasing device for construction machine |
| CN101786447A (en) * | 2009-01-22 | 2010-07-28 | 江绍成 | Braking kinetic energy regenerating hydraulic retarder for automobile |
| CN107738637A (en) * | 2017-11-15 | 2018-02-27 | 宁波市鄞州堃信工业产品设计有限公司 | The integrated total pumping system of control of pressure difference side valve type braking clutch |
| CN215244803U (en) * | 2021-06-25 | 2021-12-21 | 上海埃曼流体技术有限公司 | Vehicle braking device |
| CN216734236U (en) * | 2021-12-31 | 2022-06-14 | 富奥汽车零部件股份有限公司 | Retarding system and vehicle transmission system thereof |
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| CN114179767B (en) | 2024-08-02 |
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