CN212579830U - High-efficiency hydraulic brake device - Google Patents

Abstract

The utility model belongs to hydraulic braking device, concretely relates to high-efficient hydraulic braking device. The device comprises a hydraulic oil pump, a hydraulic system controller, an oil tank, a heat exchanger, a radiator, a gear shaft system for realizing coaxial reverse rotation, a box body, a reverse impeller, a forward impeller and the like. The utility model discloses a hydraulic braking, the wearing and tearing of having avoided traditional floodgate valve formula stopper probably appear the braking inefficacy that friction part temperature risees and cause with long-time braking. The flexible brake has a buffering effect, can reduce impact force generated by parts of power sources and transmission systems such as motors and engines due to rapid deceleration, and protects the safety of the power sources and the transmission systems such as the motors and the engines.

Description

High-efficiency hydraulic brake device

Technical Field

The utility model belongs to hydraulic braking device, concretely relates to high-efficient hydraulic braking device.

Background

Many conventional braking devices include, for example, a friction brake, a shoe brake, a hydraulic drum brake, an electromagnetic brake, an engine exhaust brake, and an eddy current brake. In general, in an apparatus having difficulty in braking, an auxiliary braking device is additionally provided in addition to a main braking mode in order to stabilize operation and enhance braking effect.

Particularly, in the case of a rolling stock running on a long downhill, in order to control the speed of the rolling stock, a brake shoe brake is frequently used, which causes severe wear of the brake shoe due to long-term use and generates a large amount of heat, which makes the brake shoe brake ineffective, which is very disadvantageous to the safe running of the rolling stock.

In addition, other equipment with high-speed rotating parts, especially large and heavy equipment with rotating parts, needs large braking torque when braking is needed, and the braking time is long, and if the equipment is a heavy high-speed rotating part, the braking time is longer. In addition, conventional gate valve type brakes generate a large amount of frictional heat, which may cause the brakes to fail or accelerate wear of friction members in the brakes.

In order to solve the problem, the utility model designs a high-efficient hydraulic braking device of a section, can produce huge flexible braking torque to realize high-efficient braking or auxiliary brake.

SUMMERY OF THE UTILITY MODEL

Utility model purpose:

in order to solve current stopper structure complicacy, unsuitable long-time braking, braking moment is less, the wearing and tearing of braking part are very fast, the unobtrusive technical problem of braking effect, the utility model provides a high-efficient hydraulic braking device.

The technical scheme is as follows:

a high-efficiency hydraulic brake device comprises a hydraulic oil pump, a hydraulic system controller, an oil tank, a heat exchanger and a radiator, wherein the hydraulic system controller is connected with the hydraulic oil pump and controls the hydraulic oil pump, the hydraulic oil pump is connected with the oil tank, the oil tank is connected with the heat exchanger, the heat exchanger is respectively connected with the radiator and a box body, a first shaft is connected with the hydraulic oil pump, a reverse impeller and a forward impeller are arranged in the box body, the forward impeller is sleeved on the first shaft, the oilless bearing is sleeved on the first shaft, the reverse impeller is sleeved on the fourth shaft on the oilless bearing, the first shaft is provided with a driving transmission gear, the driving transmission gear is meshed with a first steering gear on the second shaft, the first steering gear is meshed with a second steering gear on the third shaft, the second steering gear coaxially rotates with the driven transmission gear through the third shaft, and the driven transmission gear is meshed with a reverse rotating gear on the fourth shaft.

Further, a forward impeller and a driving transmission gear are sequentially arranged on the first shaft from one side of the hydraulic oil pump; the oil inlet and the hydraulic oil pump of the cavity oil delivery passageway of primary shaft are connected, and the oil-out setting of cavity oil delivery passageway is in the impeller cavity that reverse impeller and forward impeller enclose, and the forward impeller passes through the spline and is connected with the primary shaft, and reverse impeller passes through splined connection and suit on the fourth shaft, and the fourth shaft suit is on oilless bearing, and the oilless bearing suit is on the primary shaft, and the oilless bearing setting is between drive gear and forward impeller.

Furthermore, the spring housing is on the fourth shaft, sets up between reverse impeller and reverse rotating gear, and reverse rotating gear both ends are fixed through the retaining ring.

Furthermore, the rotation direction of the driving transmission gear is the same as that of the second steering gear and the driven transmission gear, and the rotation direction of the driving transmission gear is opposite to that of the reverse rotation gear.

Furthermore, one side of the box body is an open type two-cavity type mounting structure, and the other side of the box body is an impeller box body inner chamber; the closed impeller box body inner chamber is provided with an impeller box body inner chamber oil outlet, an impeller box body inner chamber oil discharging port and a first shaft mounting hole; the outer side of the mounting structure is provided with three mounting bearing holes for mounting a first shaft, a third shaft and a second shaft, the inner side plate is provided with three holes corresponding to the outer side plate, a forward impeller and a reverse impeller are arranged in an impeller box inner chamber, the impeller box inner chamber is connected with the two axial ends of the first shaft through the mounting holes, an impeller box inner chamber oil outlet is arranged above the impeller box inner chamber, and the impeller box inner chamber oil outlet is connected with a heat exchanger; an impeller box inner chamber oil discharging port is arranged below the impeller box inner chamber and is connected with an oil tank.

Furthermore, an inlet of the hydraulic oil pump is connected with an oil tank, an outlet of the hydraulic oil pump is connected with an oil inlet of the first shaft, a hollow oil conveying channel for supplying oil to the impeller cavity is arranged in the first shaft, and an oil outlet of the first shaft is connected with the impeller cavity; the oil tank is respectively connected with the hydraulic oil pump and the heat exchanger; the heat exchanger is respectively connected with the oil tank and the radiator; the pressure regulating valve controlled by the hydraulic system controller is arranged on a pipeline between the outlet of the hydraulic oil pump and the oil tank; the unloading valve controlled by the hydraulic system controller is arranged on an unloading oil pipe between the oil unloading port in the impeller box body and the oil tank.

Further, an oil unloading port of the impeller box inner chamber below the impeller box inner chamber is communicated with an unloading oil pipe, an unloading valve is arranged on the unloading oil pipe, and the unloading oil pipe connects the impeller box inner chamber with an oil tank.

Furthermore, a gap is reserved between the forward impeller and the reverse impeller.

The advantages and effects are as follows:

the utility model has the advantages of it is following and beneficial effect:

(1) the utility model discloses the device braking effect is according to the pressure change of hydraulic oil pump input, and the higher braking capacity that the pressure of input is, and braking torque is big more, and specially adapted has rotary part's braking.

(2) The utility model discloses a hydraulic braking belongs to flexible braking, can play the braking cushioning effect, all possesses buffering and guard action to the component on the braking driving chain such as power supplies such as motor, engine and gear mechanism.

(3) The utility model discloses compact structure, its area is little, simple structure, the installation of being convenient for. The reverse pump wheel and the driving pump wheel are driven to generate relative reverse rotation motion through coaxial reverse rotation of the gears so as to generate mutual hydraulic damping to generate reverse force on the driving transmission gear, and braking is realized.

(4) The utility model discloses a hydraulic braking device utilizes the reverse rotation of two pump pulleys to produce reverse hydraulic damping and reaches the braking purpose, has avoided the friction key wearing and tearing of traditional contact brake, has adopted the problem of the braking inefficacy that the temperature rise of having avoided the brake part to the cooling of brake fluid probably produced.

Drawings

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

FIG. 2 is a schematic view of the interior and connections;

FIG. 3 is a cross-sectional view of the transmission;

FIG. 4 is a cross-sectional view with the housing;

FIG. 5 is a schematic view of the overall transmission with the housing;

FIG. 6 is a schematic view of the case side of FIG. 5;

FIG. 7 is an axial perspective view of the housing;

FIG. 8 is a right side perspective view of the case;

FIG. 9 is a schematic view of the case;

FIG. 10 is a perspective view of the spindle;

FIG. 11 is a front elevational view of the spindle;

FIG. 12 is a schematic view of a shaft system (first shaft system) in which a driving transmission gear and a forward direction impeller are located;

FIG. 13 is a schematic cross-sectional view of the shafting (first shafting) in which the drive transmission gear and forward impeller of FIG. 12 are located;

FIG. 14 is a schematic view of the forward impeller inner vanes;

FIG. 15 is a cross-sectional view of the impeller inner blade of FIG. 16;

FIG. 16 is a sectional view of the shaft system (fourth shaft system) in which the counter-vane wheel is located;

FIG. 17 is a front view of the shaft system (fourth shaft system) in which the counter-rotating impellers are located;

FIG. 18 is a perspective view of the shaft system (fourth shaft system) in which the counter-vane wheel is located;

FIG. 19 is a sectional view of a shafting (third shaft system) in which the second steering gear is located;

fig. 20 is a perspective view of a shaft system (third shaft system) in which the second steering gear is located;

FIG. 21 is a perspective view of a shaft system (second shaft system) in which the first steering gear is located;

FIG. 22 is a sectional view of the shafting (second shafting) of the first steering gear;

FIG. 23 is a front view of the shafting (second shafting) of the first steering gear;

FIG. 24 is a perspective view of the counter vane wheel;

FIG. 25 is a side view of the counter impeller;

fig. 26 is a schematic view of the blades of a counter-rotating impeller.

Reference numerals:

1. the hydraulic control system comprises a driving transmission gear, 2, a first steering gear, 3, a second steering gear, 4, a driven transmission gear, 5, a reverse rotation gear, 6, a first shaft, 7, a third shaft, 8, a second shaft, 9, a spring, 10, a reverse impeller, 11, a forward impeller, 12, a hydraulic oil pump, 13, a hydraulic system controller, 14, a heat exchanger, 15, a radiator, 16, an oilless bearing, 17, a fourth shaft, 18, a hollow oil delivery channel, 19, a blade, 20, a box body, 21, a mounting structure, 22, an impeller box body inner chamber, 23, an oil tank, 24, a pressure regulating valve, 25, an unloading valve, 26, an impeller box body inner chamber oil outlet and 27, and an impeller box body inner chamber oil unloading port.

Detailed Description

The invention will be further explained with reference to the drawings:

as shown in fig. 1 to 6, the high-efficiency hydraulic brake device includes a hydraulic oil pump 12, a hydraulic system controller 13, an oil tank 23, a heat exchanger 14, and a radiator 15. The inlet of the hydraulic oil pump 12 is connected with an oil tank 23, the outlet of the hydraulic oil pump is connected with the inlet of an oil channel hole of a first shaft 6 in a first shaft system, and an oil channel hole for supplying oil to a pump wheel cavity is formed in the first shaft. The oil tank 23 is connected to the hydraulic oil pump 12 and the heat exchanger 14, respectively. The heat exchanger 14 is connected to the oil tank 23 and the radiator 15, respectively. The pressure regulating valve 24 is connected to the outlet of the hydraulic oil pump 12 and the oil tank, respectively. The unloading valve 25 is respectively connected with the impeller box body inner chamber oil unloading port 27 and the oil tank 23. The pressure regulating valve 24, the unloading valve 25 and the hydraulic oil pump are all in communication with the hydraulic system controller 13 and are all controlled by the hydraulic system controller 13. The reverse impeller 10 is connected with and sleeved on a fourth shaft 17 through a spline, the fourth shaft 17 is sleeved on an oilless bearing 16, and the oilless bearing 16 is sleeved on the first shaft 6. The reverse impeller 10 and the forward impeller 11 are installed in the box body 20, the forward impeller 11 is sleeved on the first shaft 6, the forward impeller 11 and the driving transmission gear 1 are arranged on the first shaft 6, the driving transmission gear 1 is meshed with the first steering gear 2 on the second shaft 8, the first steering gear 2 is meshed with the second steering gear 3 on the third shaft 7, the second steering gear 3 coaxially rotates with the driven transmission gear 4 through the third shaft 7, and the driven transmission gear 4 is meshed with the reverse rotation gear 5 on the fourth shaft 17.

The utility model provides a hydraulic oil pump 12, hydraulic system controller 13, oil tank 23, heat exchanger 14, radiator 15, pressure regulating valve 24, off-load valve 25 are existing equipment, no longer describe herein. The existing hydraulic oil pump 12 is provided with an inlet and an outlet, the inlet of the hydraulic oil pump 12 is connected with an oil tank 23, the outlet is connected with the inlet of an oil channel hole of a first shaft 6 in a first shaft system, and an oil channel hole for supplying oil to a pump wheel cavity is formed in the first shaft. The hydraulic system controller 13 controls the oil pressure of the pressure regulating valve 24, controls the oil pressure and unloading of the unloading valve 25, and also controls the start and stop 12 of the hydraulic oil pump. The heat exchanger 14 and the radiator 15 are used for cooling oil, when braking is needed in the using process, the reverse impeller 10 and the forward impeller 11 rotate reversely to cause hydraulic oil in the impeller cavity to be heated, and the heat exchanger 14 and the radiator 15 are arranged for cooling in order to guarantee the safety of the whole device.

By using the existing hydraulic system controller 13, the hydraulic system controller 13 controls the oil pressure of the pressure regulating valve 24, controls the oil pressure and the unloading of the unloading valve 25, and also controls the start and stop 12 of the hydraulic oil pump. The hydraulic system controller 13 may be connected to or replaced with a brake pedal, a shift lever or other control element in a driving position of the vehicle in applications to vehicles, which are known in the art.

As shown in fig. 1, fig. 2, fig. 3, the utility model discloses simple structure, it mainly utilizes the meshing between the gear to realize coaxial reversal, the coaxial reverse motion of the initiative drive gear 1 on the primary shaft 6 and reverse running gear 5 drives forward impeller 10 and reverse impeller 11 respectively and produces relative reverse rotation motion, through the reverse damping moment of torsion of hydraulic oil medium transmission, in order to realize the speed reduction of primary shaft 6, it is flexible braking, can reduce power sources such as motor and engine and transmission system part because of the produced impact force of fast speed reduction, power sources such as protection motor and engine and transmission system's safety.

The first shaft 6 is sequentially provided with a forward impeller 11, an oilless bearing 16 and a driving transmission gear 1; an oil inlet of a hollow oil delivery channel 18 of the first shaft 6 is connected with the hydraulic oil pump 12, an oil outlet of the hollow oil delivery channel 18 is arranged between an impeller cavity surrounded by a reverse impeller and a forward impeller, the forward impeller 11 is connected with the first shaft 6 through a spline, the reverse impeller 10 is connected with and sleeved on a fourth shaft 17 through a spline, the fourth shaft 17 is sleeved on an oilless bearing 16, the oilless bearing 16 is sleeved on the first shaft 6, and the oilless bearing 16 is arranged between the driving transmission gear 1 and the forward impeller 11.

As shown in fig. 12 and 13, a hollow oil delivery passage 18 is formed in the center of one end of the first shaft 6 and is used for communicating with the hydraulic oil pump 12, and hydraulic oil from the hydraulic oil pump 12 can directly flow into a space between the cavities enclosed by the forward impeller 11 and the reverse impeller 10, so that the structure is simple, and the occupied space is reduced.

As shown in fig. 3, the spring 9 is sleeved on the fourth shaft 17 at the left side of the reverse impeller 10 and is arranged between the reverse impeller 10 and the reverse rotating gear 5 to provide axial thrust for the reverse impeller 10, and two ends of the reverse rotating gear 5 are fixed by retaining rings.

As can be seen from fig. 3, 6 and 18, the spring 9 is disposed between the reverse impeller 10 and the reverse rotating gear 5 and is sleeved on the fourth shaft 17, the fourth shaft 17 is sleeved on the oilless bearing 16, the fourth shaft 17 can freely rotate on the oilless bearing 16, the oilless bearing 16 is configured into an L-shaped outward-turning edge structure, the outward-turning edge which radially extends outwards abuts against one end of the fourth shaft 17, the axial position of the oilless bearing 16 on the first shaft 6 is limited by a retaining ring, meanwhile, the reverse rotating gear 5 is further sleeved on the fourth shaft 17, the two tanks of the forward impeller 11 are axially limited by the retaining ring, and the right side of the reverse impeller 10 is axially limited by the retaining ring.

Reverse impeller 10 suit can also be micro axial and slide on fourth shaft 17, withstands one side of reverse impeller 10 through the spring 9 that sets up, carries out the dynamic spacing with reverse impeller 10's axial motion, can play the effect of adjusting the distance between reverse impeller 10 and the forward impeller 11 and adjusting the cavity oil-out size that the impeller encloses, and then can play and change the effect and the cushioning effect of damping moment size.

The rotation directions of the driving transmission gear 1, the second steering gear 3 and the driven transmission gear 4 are the same, and the rotation direction of the driving transmission gear is opposite to that of the reverse rotation gear 5, so that the forward impeller 11 and the reverse impeller 10 are coaxially reversed, and a reverse damping torque is generated through a hydraulic oil medium, so that the driving transmission gear 1 is decelerated.

The utility model discloses the principle utilizes gear engagement, and the reverse rotation gear 5 rotation opposite direction on the drive gear 1 on the primary shaft 6 and the fourth shaft 17 has realized coaxial reverse rotation, and then drives forward impeller 11 and reverse impeller 10 and realize relative coaxial reversal, through the hydraulic oil medium and then produce reverse damping moment of torsion, makes drive gear 1 deceleration, has realized the braking, and its braking process is flexible, more is favorable to the protection of device.

As shown in fig. 6 to 11, one side of the box 20 is an open two-cavity mounting structure 21, and the other side of the box 20 is an impeller box inner chamber 22. The impeller housing inner chamber 22 is a sealed space with an impeller housing inner chamber oil outlet 26, an impeller housing inner chamber oil discharge port 27 and a first shaft mounting hole. The outer side of the mounting structure 21 is provided with three mounting bearing holes for mounting the first shaft 6, the third shaft 7 and the second shaft 8, the inner side plate is provided with three holes corresponding to the outer side, the forward impeller 11 and the reverse impeller 10 are arranged in the impeller box inner chamber 22, the impeller box inner chamber 22 is connected with two axial ends of the first shaft 6 through the mounting holes, an impeller box inner chamber oil outlet 26 is arranged above the impeller box inner chamber 22, and the impeller box inner chamber oil outlet 26 is connected with the heat exchanger 14. An impeller body inner chamber oil discharging port 27 is arranged below the impeller body inner chamber 22, and the impeller body inner chamber oil discharging port 27 is connected with the oil tank 23.

The two ends of the second shaft 8 are directly mounted on the outer and inner side plates on both sides of the mounting structure 21 through bearing seats.

As shown in fig. 6, the holes of the outer plate, the inner plate and the inner partition plate of the mounting structure 21 are mainly used for mounting with the first shaft 6, the third shaft 7 and the second shaft 8, so as to ensure the positions among the shafts and realize the meshing of the gears. The left end and the right end of the second shaft 8 are installed through installation holes in the box body. The left end and the right end of the first shaft 6 are installed through bearings and installation holes in the box body. The impeller box inner chamber 22 is a sealed space, and two sides of the impeller box inner chamber are also provided with baffle cover sealing structures to prevent oil leakage. The upper and lower parts of the impeller box inner chamber 22 are respectively provided with a pipe orifice for connecting an oil circuit.

As shown in fig. 2, an inlet of the hydraulic oil pump 12 is connected to an oil tank 23, an outlet of the hydraulic oil pump is connected to an oil inlet of a first shaft 6 in the first shaft system, a hollow oil delivery channel 18 for supplying oil to an impeller cavity is arranged in the first shaft, and an oil outlet of the first shaft 6 is connected to the impeller cavity. The oil tank 23 is connected to the hydraulic oil pump 12 and the heat exchanger 14, respectively. The heat exchanger 14 is connected to the oil tank 23 and the radiator 15, respectively. The pressure regulating valve 24 is connected to the outlet of the hydraulic oil pump 12 and the oil tank, respectively. A pressure regulating valve 24 controlled by the hydraulic system controller 13 is provided on a pipe between the outlet of the hydraulic oil pump 12 and the oil tank 23; the unloading valve 25 is respectively connected with the impeller box body inner chamber oil unloading port 27 and the oil tank 23. An unloading valve 25 controlled by the hydraulic system controller 13 is provided on an unloading oil pipe between an oil discharge port 27 in the impeller case and the oil tank 23. The pressure regulating valve 24, the unloading valve 25 and the hydraulic oil pump are all in communication with the hydraulic system controller 13 and are all controlled by the hydraulic system controller 13.

The impeller box inner chamber oil discharge port 26 below the impeller box inner chamber 22 is communicated with an unloading oil pipe, an unloading valve is arranged on the unloading oil pipe, and the unloading oil pipe connects the impeller box inner chamber 22 with the oil tank 23.

As shown in fig. 3 and 6, a small gap is left between the forward impeller 11 and the reverse impeller 10, the size of the gap changes with a certain distance along with a slight axial sliding of the reverse impeller 10, and the joint between the forward impeller 11 and the reverse impeller 10 is a stepped sealing structure.

The forward impeller 11 and the reverse impeller 10 are substantially the same in structure, the cover body is circular, blades 19 with streamline certain radian are fixed in the cover body, after hydraulic oil enters the impellers, the impellers rotate under the driving of splines, hydraulic oil media are stirred by the blades, and the forward impeller 11 and the reverse impeller 10 are subjected to reverse damping torque opposite to the respective rotating directions, so that the speed reduction is realized.

As shown in fig. 14 to 17, the right side of the forward impeller 11 is a short-mouthed tube, and the inner side and the outer side of the short-mouthed tube are limited by the retainer rings, that is, the short-mouthed tube is axially positioned and fixed. As shown in fig. 18 to 20, 23 and 24, the counter impeller 10 is a long-mouthed pipe, and is easily abutted against and sealed by the spring 9. And a sealing ring is arranged at the mounting hole between the long-mouth pipe of the reverse impeller 10 and the impeller box body inner chamber 22 to ensure the sealing of the impeller box body inner chamber 22. The spring 9 is used for buffering and dynamically and axially limiting the reverse impeller 10. A retainer ring is arranged on the right side (close to the forward impeller 11) of the reverse impeller 10 for axial positioning, and a retainer ring is arranged on the left side (close to the reverse rotating gear) of the spring 9 for axial limiting of the spring. The forward impeller 11 and the reverse impeller 10 are sealed in the impeller housing inner chamber 22.

As shown in fig. 21 and 22, the third shaft 7, the second steering gear 3, and the driven transmission gear 4 are provided. The second steering gear 3 and the driven transmission gear 4 are fixed on the third shaft 7, rotate simultaneously with the third shaft 7 and are driven by keys, and retaining rings are arranged on two sides of the gears for fixation.

A method of operating a high efficiency hydraulic brake device, the method comprising:

(1) the power input method comprises the following steps: the driving transmission gear 1 of the high-efficiency hydraulic brake device is meshed with a rotating gear on a rotating part of equipment such as an automobile and the like needing braking, and drives a first shaft 6 and a forward impeller 11 to rotate, so that power input is realized. Meanwhile, the first steering gear 2 meshed with the driving transmission gear 1 rotates to drive the second steering gear 3 meshed with the first steering gear 2 to rotate, the rotating direction of the second steering gear 3 is the same as that of the driving transmission gear 1, the driven transmission gear 4 coaxial with the second steering gear 3 rotates, the reverse rotating gear 5 meshed with the driven transmission gear 4 forms reverse rotation with the driving transmission gear 1, and then the reverse impeller 10 is driven to rotate reversely. That is, the reverse rotational movement of the fourth shaft 17 and the reverse impeller 10 is achieved by the gear mesh transmission of the gear train in the case 20.

The operation method forms flexible braking through coaxial reverse motion. The utility model discloses a hydraulic braking, the wearing and tearing of having avoided traditional floodgate valve formula stopper probably appear the braking inefficacy that friction part temperature risees and cause with long-time braking. The flexible brake has a buffering effect, can reduce impact force generated by parts of power sources and transmission systems such as motors and engines due to rapid deceleration, and protects the safety of the power sources and the transmission systems such as the motors and the engines.

(2) The braking method comprises the following steps: when equipment needs to be braked, the hydraulic system controller 13 controls to open the hydraulic oil pump 12, close an oil return passage of the unloading valve 25, and set the hydraulic value of the pressure regulating valve 24, the hydraulic oil pump 12 inputs hydraulic oil into the first shaft 6, hydraulic oil medium fills a cavity surrounded by the forward impeller 11 and the reverse impeller 10 to drive the forward impeller 11 to rotate, the impellers of the forward impeller 11 and the reverse impeller 10 stir the hydraulic oil medium to generate mutual damping torque to each other, so that the forward impeller 11 and the reverse impeller 10 both reduce the speed, the forward impeller 11 drives the first shaft 6 to reduce the speed through a spline, the first shaft 6 drives the driving transmission gear 1 to reduce the speed through a key, and the driving transmission gear 1 drives a rotating gear on rotating parts of the equipment such as an automobile and the like needing to be braked to reduce the speed through gear meshing, and brake. The magnitude of the braking torque varies depending on the magnitude of the hydraulic pressure value of the pressure regulating valve 24 and the magnitude of the unloading valve set pressure value, and when the unloading valve completely closes the oil return passage, the magnitude of the braking torque is determined by the magnitude of the hydraulic pressure value set by the pressure regulating valve 24. When the unloading valve does not completely close the oil return passage, the magnitude of the braking torque is determined by the magnitude of the hydraulic pressure value set by the pressure regulating valve 24 and the magnitude of the hydraulic pressure value set by the unloading valve, and the minimum of the pressure values set by the two hydraulic valves determines the magnitude of the braking torque. Because a part of the hydraulic oil in the cavity surrounded by the forward impeller 11 and the reverse impeller 10 flows out of the labyrinth-shaped gap formed by the combination of the two impellers into the sealed cavity of the impeller box inner chamber 22 under the action of centrifugal force, flows out of the oil outlet 26 of the impeller box inner chamber, flows into the heat exchanger 14 for cooling, and flows back to the oil tank 23 through the outlet of the heat exchanger 14 after cooling. At the same time, the radiator 15 radiates heat from the oil in the heat exchanger 14.

When the braking is not needed, the hydraulic system controller 13 controls to close the hydraulic oil pump 12, open the unloading valve 25, drain the hydraulic oil in the impeller cavity surrounded by the forward impeller 11 and the reverse impeller 10, and flow back to the oil tank 23 through the oil unloading port 27 and the unloading oil pipe in the impeller box body by using the gravity action, and the impellers of the forward impeller 11 and the reverse impeller 10 are in an idle state and do not generate mutual damping torque.

Claims (8)

1. The utility model provides a high-efficient hydraulic braking device, including hydraulic oil pump (12), hydraulic system controller (13), oil tank (23), heat exchanger (14), radiator (15), hydraulic system controller (13) are connected with hydraulic oil pump (12), hydraulic system controller control hydraulic oil pump (12), hydraulic oil pump (12) are connected with oil tank (23), oil tank (23) are connected with heat exchanger (14), heat exchanger (14) are connected with radiator (15) and box (20) respectively, its characterized in that: first axle (6) are connected with hydraulic oil pump (12), install in box (20) reverse impeller (10) and forward impeller (11), forward impeller (11) suit is on first axle (6), the cover has oilless bearing (16) on first axle (6), reverse impeller (10) cover is on fourth shaft (17) on oilless bearing (16), be equipped with drive transmission gear (1) on first axle (6), drive transmission gear (1) and the meshing of first steering gear (2) on second axle (8), first steering gear (2) and the meshing of second steering gear (3) on third axle (7), second steering gear (3) are through third axle (7) and driven transmission gear (4) coaxial rotation, driven transmission gear (4) and the meshing of reverse rotation gear (5) of setting on fourth shaft (17).

2. A high efficiency hydraulic brake as defined in claim 1, wherein: a forward impeller (11) and a driving transmission gear (1) are sequentially arranged on the first shaft (6) from one side of the hydraulic oil pump (12);

the oil inlet of the hollow oil conveying channel (18) of the first shaft (6) is connected with the hydraulic oil pump (12), the oil outlet of the hollow oil conveying channel (18) is arranged in an impeller cavity formed by enclosing of a reverse impeller and a forward impeller, the forward impeller (11) is connected with the first shaft (6) through a spline, the reverse impeller (10) is connected with and sleeved on a fourth shaft (17) through a spline, the fourth shaft (17) is sleeved on an oilless bearing (16), the oilless bearing (16) is sleeved on the first shaft (6), and the oilless bearing (16) is arranged between the driving transmission gear (1) and the forward impeller (11).

3. A high efficiency hydraulic brake device as defined in claim 1 or 2, wherein: the spring (9) is sleeved on the fourth shaft (17) and arranged between the reverse impeller (10) and the reverse rotating gear (5), and two ends of the reverse rotating gear (5) are fixed through check rings.

4. A high efficiency hydraulic brake as defined in claim 1, wherein: the driving transmission gear (1) has the same rotating direction with the second steering gear (3) and the driven transmission gear (4), and the rotating direction of the driving transmission gear is opposite to that of the reverse rotating gear (5).

5. A high efficiency hydraulic brake as defined in claim 1, wherein: one side of the box body (20) is an open type two-cavity type mounting structure (21), and the other side of the box body (20) is an impeller box body inner chamber (22); the closed impeller box inner chamber (22) is provided with an impeller box inner chamber oil outlet (26), an impeller box inner chamber oil discharge port (27) and a first shaft mounting hole;

three mounting bearing holes for mounting a first shaft (6), a third shaft (7) and a second shaft (8) are formed in the outer side of the mounting structure (21), three holes corresponding to the outer side plate are formed in the inner side plate, the forward impeller (11) and the reverse impeller (10) are arranged in the impeller box inner chamber (22), the impeller box inner chamber (22) is connected with the two axial ends of the first shaft (6) through the mounting holes, an impeller box inner chamber oil outlet (26) is formed above the impeller box inner chamber (22), and the impeller box inner chamber oil outlet (26) is connected with the heat exchanger (14); an impeller box inner chamber oil discharging port (27) is arranged below the impeller box inner chamber (22), and the impeller box inner chamber oil discharging port (27) is connected with the oil tank (23).

6. A high efficiency hydraulic brake as defined in claim 1, wherein: an inlet of the hydraulic oil pump (12) is connected with an oil tank (23), an outlet of the hydraulic oil pump is connected with an oil inlet of the first shaft (6), a hollow oil conveying channel (18) for supplying oil to an impeller cavity is arranged in the first shaft (6), and an oil outlet of the first shaft (6) is connected with the impeller cavity; the oil tank (23) is respectively connected with the hydraulic oil pump (12) and the heat exchanger (14); the heat exchanger (14) is respectively connected with the oil tank (23) and the radiator (15); a pressure regulating valve (24) controlled by a hydraulic system controller (13) is arranged on a pipeline between an outlet of the hydraulic oil pump (12) and an oil tank (23); an unloading valve (25) controlled by a hydraulic system controller (13) is arranged on an unloading oil pipe between an oil unloading port (27) in the impeller box body and an oil tank (23).

7. A high efficiency hydraulic brake as defined in claim 1, wherein: an oil unloading port (27) of the impeller box inner chamber below the impeller box inner chamber (22) is communicated with an unloading oil pipe, an unloading valve (25) is arranged on the unloading oil pipe, and the unloading oil pipe connects the impeller box inner chamber (22) with the oil tank (23).

8. A high efficiency hydraulic brake as defined in claim 1, wherein: a gap is reserved between the forward impeller (11) and the reverse impeller (10).

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