CN113915258A

CN113915258A - Aqueous medium hydraulic retarder for improving driving safety

Info

Publication number: CN113915258A
Application number: CN202111364405.XA
Authority: CN
Inventors: 谢茂青; 赵早君; 陈惠芳
Original assignee: ZHEJIANG TIELIU CLUTCH CO Ltd
Current assignee: Tieliu Co ltd
Priority date: 2021-11-17
Filing date: 2021-11-17
Publication date: 2022-01-11
Anticipated expiration: 2041-11-17
Also published as: CN113915258B

Abstract

The invention relates to the technical field of vehicle retarders, in particular to an aqueous medium hydraulic retarder for improving driving safety, which comprises a cylinder shell, wherein a retarding working cavity is arranged in the cylinder shell in a run-through manner, a rotor assembly is arranged in the retarding working cavity, and stator assemblies are arranged at two ends of the retarding working cavity. According to the invention, the rotor assembly and the stator assembly are arranged, the rotor assembly is connected with the transmission end of the vehicle gearbox, the rotor assembly drives water to rotate at a high speed to impact the stator assembly, and the stator assembly reacts on the rotor assembly to realize speed reduction, extremely low abrasion and good speed reduction effect.

Description

Aqueous medium hydraulic retarder for improving driving safety

Technical Field

The invention relates to the technical field of vehicle retarders, in particular to an aqueous medium hydraulic retarder for improving driving safety.

Background

For automobiles frequently running in mountainous areas or hilly areas, in order to continuously reduce or maintain a stable speed and reduce or remove the load of a running brake for a long time when descending a slope, an auxiliary braking device such as a retarder is generally required to be additionally arranged.

The hydrodynamic retarder has the advantages of high retarding efficiency, small size and quality, no abrasion during working and the like, and the hydrodynamic retarder has the best overall effect by using an aqueous medium hydrodynamic retarder which takes water as a medium, has quick heat transfer, small viscosity, no pollution and is easy to obtain.

However, the existing hydraulic retarder with water medium also has the fatal defects that water is very easy to evaporate, great steam pressure is easily generated when the retarder works, the working pressure needs to be well controlled and the temperature needs to be reduced in time, the requirement on the working environment is high, the water loss is great when the pressure is released, the water needs to be supplemented at variable time, and the retarder is troublesome; and the engagement and disengagement lag time is long, there is a power loss at the time of no operation, increasing the load on the engine.

Disclosure of Invention

In view of this, the present invention provides an aqueous medium hydraulic retarder for improving driving safety, which is mainly used for reducing water loss during operation.

In order to solve the technical problems, the technical scheme of the invention is as follows:

an aqueous medium hydraulic retarder for improving driving safety comprises a barrel shell, wherein a retarding working cavity is arranged in the barrel shell in a run-through mode, a rotor assembly is arranged in the retarding working cavity, and stator assemblies are arranged at two ends of the retarding working cavity; a steam condensing cavity is arranged on the upper side of the barrel shell, and a communicated steam inlet passage is arranged between the steam condensing cavity and the slow-speed working cavity; the condensing cavity extends downwards to form a return channel communicated with the inner wall of the lower side of the water tank; and an exhaust passage communicated with the outside of the cylinder shell is arranged on the side wall of the water tank.

Compared with the prior art, the invention has the advantages that:

through setting up rotor subassembly and stator module, the transmission end of vehicle transmission is connected to the rotor subassembly, drives water through the rotor subassembly and rotates at a high speed and strike stator module, and stator module counteracts in order to realize slowing down, extremely low wearing and tearing, and it is effectual to slow down.

The traditional hydraulic retarder with water medium can generate a large amount of steam to sharply increase pressure when working, and the steam is generally directly discharged to release pressure, so that the water loss is large.

Further, the rotor assembly comprises a first rotor and a second rotor which are oppositely arranged, the first rotor and the second rotor are in clearance fit with the inner wall of the retarding working cavity, and rotor blades are arranged on the first rotor and the second rotor; the stator assembly comprises two end covers which are respectively and hermetically arranged at two ends of the slow speed working cavity, and stator blades are respectively arranged on one wall of each end cover facing the slow speed working cavity; connecting shafts are rotatably arranged on the two end covers, the two connecting shafts are respectively connected with the first rotor and the second rotor through coaxial splines, and one of the connecting shafts is connected to the transmission end of the transmission; the first rotor and the second rotor are provided with telescopic assemblies for driving the first rotor and the second rotor to move away from or close to each other; in a mutually distant state, the telescopic assembly is extended, and the rotor blades and the stator blades are staggered; under the state of mutual approach, the telescopic assembly contracts, the first rotor is axially attached to the second rotor, the rotor blades are separated from the stator blades in a staggered manner, the two groups of rotors can ensure the balance of braking force, and the two groups of rotors can be driven by the telescopic device to mutually approach and separate, when the retarding is required, the two groups of rotors are driven to mutually separate, so that the rotor blades on the rotors are staggered with the corresponding stator blades, a strong retarding braking force is ensured when the rotors work, and when the retarding is not required, the two groups of rotors are driven to mutually approach, so that the rotor blades on the rotors are separated from the corresponding stator blades, so that even when the rotors rotate at a high speed, the mutual acting force is difficult to generate between the rotor blades and the stator blades, so as to reduce the power loss of an engine when the retarding is not required, compared with the rotor and the stator which are relatively fixed in the existing hydraulic retarder, when the water-cooled generator does not work, water needs to be drained firstly, the response speed is slow, and the rotor stator with the adjustable relative position increases the response speed.

Further, flexible subassembly including set up relatively respectively in first rotor with spacing chamber on the second rotor, two be equipped with the extensible member between the spacing chamber, the extensible member with the rotor subassembly is coaxial, and both ends connect respectively in two the inner wall in spacing chamber, two common splined connection has connecting sleeve between the spacing chamber, guarantees that two rotors stabilize rotation and relative movement in step to the protection extensible member.

Furthermore, springs are arranged between the connecting shafts matched with the first rotor and the second rotor respectively, so that the balance of forces on two sides is ensured, and the two rotors can move symmetrically.

Further, the water tank upper wall is equipped with two pressure release ways, and under the state of being close to each other, two pressure release way intercommunication the water tank with slow speed working chamber, under the state of keeping away from each other, first rotor with the second rotor blocks two respectively pressure release way blocks pressure release way during slow speed work, does not need to remove two rotors when slowing speed, and water and steam in the slow speed working chamber can be washed into the water tank rapidly in, realize quick pressure release.

Further, first rotor with the axial is equipped with the through-hole of intercommunication on the second rotor, under the state of being close to each other, first rotor with the second rotor blocks the admission passage, under the state of keeping away from each other, the admission passage intercommunication congeal the vapour chamber with slow-speed working chamber, the route of restricting steam when slowing speed work ensures certain operating pressure and ensures the backward flow effect, blocks up the admission passage when out of work, makes in the slow-speed working chamber water and steam can directly flow back to the water tank through the pressure release way.

Furthermore, the outer wall of the cylinder shell is provided with radiating fins for enhancing heat radiation.

Further, shell one side set firmly with the coaxial solid fixed ring in slow speed working chamber, gu the fixed ring internal rotation is equipped with the casing, be equipped with wind chamber and opening orientation in the casing the air outlet of shell, it is equipped with the pivot to rotate on the casing, pivot one end coaxial coupling is in another the connecting axle, the pivot other end extends into the wind intracavity is equipped with the paddle, blows a bundle of wind on the shell fin, reinforcing radiating effect.

Furthermore, a planetary transmission assembly is arranged in the air cavity and comprises a driving wheel fixedly arranged on the rotating shaft and a planetary wheel which is rotatably arranged on the inner wall of the air cavity and meshed with the driving wheel; the inner wall of the fixed ring is provided with a surrounding tooth shape, the peripheral wall of the air cavity is provided with a through groove, the planet wheel penetrates through the through groove and is meshed with the tooth shape of the inner wall of the fixed ring, and the clustered wind can rotate to blow to each position of the cylinder shell, so that the heat dissipation is further enhanced.

Drawings

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a vertical cross-sectional view of the FIG. 1 sections in close proximity to each other;

FIG. 3 is a schematic view of the structure of FIG. 2 in a state of being away from each other;

FIG. 4 is an enlarged view of A in FIG. 2;

FIG. 5 is a schematic view of B-B in FIG. 2;

FIG. 6 is a schematic view of the structure C-C in FIG. 2.

Reference numerals: 1. a cartridge housing; 11. a slow speed working chamber; 12. a heat dissipating fin; 13. an inner gear ring; 2a, a first rotor; 2b, a second rotor; 21. a rotor blade; 22. a through hole; 3. an end cap; 31. a stator vane; 32. a connecting shaft; 4. a water tank; 41. a water inlet channel; 42. a pressure relief passage; 44. an exhaust passage; 5. a vapor condensation chamber; 51. a steam inlet passage; 52. a return channel; 6. a limiting cavity; 61. a telescoping member; 62. connecting a sleeve; 63. a spring; 7. a housing; 71. a wind cavity; 72. an air outlet; 73. a rotating shaft; 74. a paddle; 81. a drive wheel; 82. a planet wheel; 83. a through groove.

Detailed Description

The following detailed description of the embodiments of the present invention is provided in order to make the technical solution of the present invention easier to understand and understand.

Example (b):

the embodiment provides an aqueous medium hydraulic retarder for improving driving safety, which is shown in fig. 1 and 2 and comprises a barrel shell 1, a cylindrical retarding working chamber 11 is arranged in the barrel shell 1 in a penetrating manner, a water tank 4 is arranged on the lower side of the retarding working chamber 11, a steam condensing chamber 5 is arranged on the upper side of the retarding working chamber 11, a water inlet channel 41 communicated in an open-close manner is arranged between the water tank 4 and the retarding working chamber 11, a water pump for pumping water in the water tank 4 into the retarding working chamber 11 is arranged on the water inlet channel 41, a steam inlet channel 51 communicated with the steam condensing chamber 5 and the retarding working chamber 11 is arranged between the steam condensing chamber 5 and the retarding working chamber 11, a backflow channel 52 communicated with the inner wall of the lower side of the water tank 4 is arranged in a downward extending manner in the steam condensing chamber 5, an exhaust channel 44 communicated with the outside of the barrel shell 1 is arranged on the side wall of the water tank 4, and a communicated passage is formed among the water tank 4, the retarding working chamber 11 and the steam condensing chamber 5, when the water tank works at a slow speed, water in the water tank 4 is pumped into the slow speed working cavity 11 through the water inlet channel 41, the water is used as a medium to work at a slow speed, steam generated by water evaporation enters the steam condensation cavity 5 through the steam inlet channel 51 to be cooled and condensed, and condensed water flows back to the water tank 4 through the backflow channel 52 downwards to realize backflow and reduce the loss of the water.

And when the steam amount of the steam is large and is not nearly completely condensed, as shown in fig. 5, the steam is directly injected into the water in the water tank 4 through the return passage 52, and is directly cooled by the water to enhance heat dissipation, and the expanded air is discharged outside through the air discharge passage 44 to maintain the air pressure in the water tank 4 constant.

Slow speed working chamber 11 in be provided with first rotor 2a and second rotor 2b relatively, first rotor 2a with second rotor 2b all with the inner wall clearance fit of slow speed working chamber 11, the both ends of slow speed working chamber 11 have two end covers 3 through bolt fixed mounting respectively, end cover 3 will slow speed working chamber 11 is sealed, two it is equipped with connecting axle 32, two all to rotate on the end cover 3 the connecting axle 32 respectively with first rotor 2a with the coaxial splined connection of second rotor 2b, one of them connecting axle 32 is connected in the transmission end of vehicle transmission, and in the vehicle operation, drive through the transmission end connecting axle 32 rotates, and then drives first rotor 2a with second rotor 2b rotates, drives another again connecting axle 32 rotates.

First rotor 2a with all be equipped with rotor blade 21 on the second rotor 2b, two 3 orientation of end cover the one end of slowing down working chamber 11 all is equipped with stator blade 31, and is left rotor blade 21 with stator blade 31 is corresponding, and the right side is the same, works as rotor blade 21 with when stator blade 31 is crisscross arranges each other, to in slowing down working chamber 11 rotor blade with pour into water between the stator blade, the gearbox transmission shaft drives first rotor 2a with second rotor 2b rotates, and then drives rotor blade 21 is rotatory in order to drive the water attack stator blade 31, stator blade 31 rethread water reaction is in rotor blade 21 to the effect of realizing slowing down the transmission end.

Referring to fig. 4, two side walls of the first rotor 2a opposite to the second rotor 2b are respectively provided with a cylindrical limiting cavity 6, two limiting cavities 6 are jointly provided with an expansion member 61, an expansion direction of the expansion member 61 is coaxial with the two rotors, two ends of the expansion member 61 are respectively connected to inner walls of the two limiting cavities 6, in this embodiment, the expansion member 61 may be, but not limited to, an air cylinder, an oil cylinder, an electric push rod, or the like, the limiting cavity 6 is further provided with a connecting sleeve 62, the connecting sleeve 62 is sleeved on the expansion member 61 and is coaxial with the two rotors, an outer peripheral wall of the connecting sleeve 62 is in spline connection with an inner peripheral wall of the limiting cavity 6, firstly, when the first rotor 2a rotates, a torsion force is transmitted to the second rotor 2b, so that the first rotor 2a and the second rotor 2b can keep rotating synchronously and moving away from/approaching each other, if not, the telescopic part 61 can be caused to share the torsional force, so that the damage is easily caused, and secondly, the telescopic part 61 is ensured not to be contacted with water to a certain degree, so that the damage is prevented.

Referring to fig. 2, 3 and 4, under the action of the telescopic member 61, the first rotor 2a and the second rotor 2b have a mutually distant state and a mutually close state, and in the mutually distant state, the telescopic member 61 extends to drive the first rotor 2a and the second rotor 2b to mutually distant, so that the rotor blades 21 respectively extend into the corresponding stator blades 31, and the rotor blades 21 and the stator blades 31 are staggered, so that the two have better relative acting force to achieve a good speed slowing effect when working; in a state of approaching to each other, the telescopic member 61 is contracted, and the first rotor 2a and the second rotor 2b are axially attached to each other, so that the rotor blades 21 and the corresponding stator blades 31 are separated from each other and separated from each other, and therefore, in the rotation of the rotor blades 21, interaction force is difficult to generate between the rotor blades 21 and the stator blades 31, and power loss to a vehicle is avoided when speed slowing is not required.

Moreover, springs 63 are respectively arranged between the connecting shafts 32 of the first rotor 2a and the second rotor 2b, and the two springs 63 have the same specification and the same elasticity, so that thrust can be balanced to enable the two rotors to move symmetrically when the telescopic piece 61 drives the first rotor 2a and the second rotor 2b to move mutually.

It should be added that the first rotor 2a and the second rotor 2b are both provided with a through hole 22 in axial direction, and the steam inlet passage 51 is located in the middle of the upper wall of the slow speed working chamber 11; two pressure relief channels 42 communicated with the slow speed working cavity 11 are arranged on the upper wall of the water tank 4, the two pressure relief channels 42 respectively correspond to the areas where the rotor blades 21 and the stator blades 31 on the left side and the right side work with each other, when the two pressure relief channels are in a mutually far state, the two pressure relief channels 42 are respectively blocked by the first rotor 2a and the second rotor 2b, and steam generated when the rotor blades 21 and the stator blades 31 work enters the area between the two rotors through the through holes 22, so that the through holes 22 play a role in maintaining a certain constant pressure effect between the rotor blades 21 and the stator blades 31, the slow speed braking effect is enhanced, and then the steam upwards enters the steam condensation cavity 5 through the steam inlet channel 51 to realize the backflow effect; when being in under the state of being close to each other, first rotor 2a with second rotor 2b blocks admission passage 51, pressure release way 42 with slow working chamber 11 intercommunication, therefore two when the rotor switches to the state of being close to each other from keeping away from each other, steam and water in the slow working chamber 11 can pass through pressure release way 42 gets into rapidly in the water tank 4, realize quick pressure release effect, avoid the lag time overlength when not needing to slow down after the speed reduction, improve response rate.

Referring to fig. 6, the outer wall of the cylinder casing 1 is further provided with heat dissipating fins 12 to enhance the heat dissipating capability of the whole body, avoid the over-high internal temperature and ensure a good slow-speed capability, in order to further enhance the heat dissipating effect, one side of the cylinder casing 1 is fixedly provided with a fixing ring coaxial with the slow-speed working chamber 11, the fixing ring is rotatably provided with a casing 7, the casing 7 is internally provided with an air chamber 71 and an air outlet 72 with an opening facing the cylinder casing 1, the casing 7 is rotatably provided with a rotating shaft 73, one end of the rotating shaft 73 is coaxially connected to the other connecting shaft 32, the other end of the rotating shaft 73 extends into the air chamber 71 and is provided with blades 74, when the vehicle is running, the rotating shaft 73 is driven by the connecting shaft 32 to rotate to drive the blades 74 to suck the external air into the air chamber 71 and intensively blow out the cylinder casing 1 from the air outlet 72, so as to realize the air cooling effect on the cylinder shell 1.

And the inner wall of the air cavity 71 is rotatably provided with planet wheels 82 arranged in an annular array, the rotating shaft 73 is fixedly provided with a driving wheel 81, the driving wheel 81 is meshed with the planet wheels 82, the inner wall of the fixed ring is provided with a surrounding tooth form, the peripheral wall of the air cavity 71 is provided with a through groove 83, the planet wheels 82 penetrate through the through groove 83 and are meshed with the tooth form of the inner wall of the fixed ring, so that when the rotating shaft 73 rotates, the whole machine shell 7 can rotate at a speed slower than that of the rotating shaft 73 through the planetary speed reduction effect between the driving wheel 81 and the planet wheels 82 and the tooth form of the inner wall of the fixed ring, and the air outlet 72 is driven to rotate along the axis of the cylinder shell 1, so that the wind energy of the air outlet 72 can be uniformly blown on the cylinder shell 1 in a surrounding manner, and the air cooling effect is enhanced.

The above are only typical examples of the present invention, and besides, the present invention may have other embodiments, and all technical solutions formed by equivalent substitutions or equivalent transformations fall within the scope of the present invention.

Claims

1. The aqueous medium hydraulic retarder comprises a barrel shell (1), wherein a retarding working cavity (11) is arranged in the barrel shell (1) in a run-through mode, a rotor assembly is arranged in the retarding working cavity (11), and stator assemblies are arranged at two ends of the retarding working cavity (11), and the hydrodynamic retarder is characterized in that a water tank (4) is arranged on the lower side of the retarding working cavity (11), a water inlet channel (41) communicated in an opening and closing mode is arranged between the water tank (4) and the retarding working cavity (11), and a water pump used for pumping water in the water tank (4) into the retarding working cavity (11) is arranged on the water inlet channel (41); a steam condensing cavity (5) is arranged on the upper side of the barrel shell (1), and a communicated steam inlet passage (51) is arranged between the steam condensing cavity (5) and the slow-speed working cavity (11); the steam condensation cavity (5) extends downwards to form a return channel (52) communicated with the inner wall of the lower side of the water tank (4); an exhaust passage (44) communicated with the outside of the cylinder shell (1) is arranged on the side wall of the water tank (4).

2. An aqueous medium hydrodynamic retarder for improving driving safety according to claim 1, characterized in that the rotor assembly comprises a first rotor (2 a) and a second rotor (2 b) which are oppositely arranged, the first rotor (2 a) and the second rotor (2 b) are in clearance fit with the inner wall of the retarding working chamber (11), and rotor blades (21) are arranged on the first rotor (2 a) and the second rotor (2 b); the stator assembly comprises two end covers (3) which are respectively and hermetically arranged at two ends of the slow speed working cavity (11), and stator blades (31) are respectively arranged on one wall of each of the two end covers (3) facing the slow speed working cavity (11); connecting shafts (32) are rotatably arranged on the two end covers (3), the two connecting shafts (32) are coaxially connected with the first rotor (2 a) and the second rotor (2 b) through splines respectively, and one of the connecting shafts (32) is connected to a transmission end of a transmission; the first rotor (2 a) and the second rotor (2 b) are provided with telescopic components for driving the first rotor and the second rotor to move away from/close to each other; in a mutually distanced condition, the telescopic assembly is extended, the rotor blades (21) being staggered with respect to the stator blades (31); in the mutually close state, the telescopic assembly is contracted, the first rotor (2 a) and the second rotor (2 b) are axially attached, and the rotor blades (21) and the stator blades (31) are separated from staggering.

3. An aqueous medium hydrodynamic retarder for improving driving safety according to claim 2, characterized in that the telescopic assembly comprises two limiting cavities (6) oppositely arranged on the first rotor (2 a) and the second rotor (2 b), respectively, a telescopic member (61) is arranged between the two limiting cavities (6), the telescopic member (61) is coaxial with the rotor assembly, two ends of the telescopic member are respectively connected to the inner walls of the two limiting cavities (6), and a connecting sleeve (62) is jointly splined between the two limiting cavities (6).

4. An aqueous medium hydrodynamic retarder according to claim 3, characterized in that the first rotor (2 a) and the second rotor (2 b) are provided with springs (63) between the coupling shafts (32) to which they are respectively engaged.

5. An aqueous medium hydrodynamic retarder for improving driving safety according to claim 2, characterized in that the upper wall of the water tank (4) is provided with two pressure relief channels (42), the two pressure relief channels (42) communicate the water tank (4) and the retarding working chamber (11) when they are close to each other, and the two pressure relief channels (42) are blocked by the first rotor (2 a) and the second rotor (2 b) when they are away from each other.

6. An aqueous medium hydrodynamic retarder for improving driving safety according to claim 2, characterized in that the first rotor (2 a) and the second rotor (2 b) are axially provided with a communicating through hole (22), the first rotor (2 a) and the second rotor (2 b) block the steam inlet channel (51) in a mutually close state, and the steam inlet channel (51) communicates the steam condensing cavity (5) and the retarding working cavity (11) in a mutually far state.

7. An aqueous medium hydrodynamic retarder for improving driving safety according to claim 1, characterized in that the outer wall of the drum shell (1) is provided with heat dissipation fins (12) for enhancing heat dissipation.

8. The hydraulic retarder with the water medium for improving driving safety as recited in claim 2, wherein a fixing ring coaxial with the retarding working chamber (11) is fixedly arranged on one side of the drum casing (1), a casing (7) is rotationally arranged in the fixing ring, an air chamber (71) and an air outlet (72) with an opening facing the drum casing (1) are arranged in the casing (7), a rotating shaft (73) is rotationally arranged on the casing (7), one end of the rotating shaft (73) is coaxially connected to the other connecting shaft (32), and the other end of the rotating shaft (73) extends into the air chamber (71) and is provided with a blade (74).

9. The hydrodynamic retarder for improving driving safety as claimed in claim 8, wherein a planetary transmission assembly is disposed in the wind chamber (71), and the planetary transmission assembly comprises a driving wheel (81) fixed on the rotating shaft (73), and a planetary wheel (82) rotatably disposed on the inner wall of the wind chamber (71) and engaged with the driving wheel (81); the inner wall of the fixed ring is provided with a surrounding tooth shape, the peripheral wall of the air cavity (71) is provided with a through groove (83), and the planet wheel (82) penetrates through the through groove (83) and is meshed with the tooth shape of the inner wall of the fixed ring.