CN111976678B

CN111976678B - Hydraulic brake device

Info

Publication number: CN111976678B
Application number: CN202010640311.XA
Authority: CN
Inventors: 程旎; 李海; 李相远; 高卓
Original assignee: Wuhan Marine Machinery Plant Co Ltd
Current assignee: Wuhan Marine Machinery Plant Co Ltd
Priority date: 2020-07-06
Filing date: 2020-07-06
Publication date: 2021-11-16
Anticipated expiration: 2040-07-06
Also published as: CN111976678A

Abstract

The disclosure provides a hydraulic brake device, and belongs to the field of hydraulic control. The hydraulic brake device comprises a shell, a driving assembly and a plurality of brake oil cylinders; an oil outlet is arranged on the outer wall of the shell; the brake oil cylinder comprises a cylinder body, a piston rod and a rotating sleeve, wherein a first through hole and an oil inlet are formed in the peripheral wall of the cylinder body, the peripheral wall of the piston is in rotating fit with the inner peripheral wall of the cylinder body, one part of the piston rod is coaxially inserted into the piston, the other part of the piston rod extends out of the shell and is used for being connected with the moving body, the rotating sleeve is rotatably and coaxially sleeved on the cylinder body, a plurality of second through holes are formed in the peripheral wall of the rotating sleeve in the circumferential direction, the aperture of each second through hole on the same radial section is gradually reduced along the circumferential direction, and the second through holes are respectively communicated with the first through hole and the oil outlet; the drive assembly is configured to drive the plurality of rotating sleeves to rotate synchronously. The hydraulic braking device provided by the disclosure can be suitable for braking automobiles with different qualities.

Description

Hydraulic brake device

Technical Field

The disclosure belongs to the field of hydraulic control, and particularly relates to a hydraulic brake device.

Background

During the production and manufacturing process of automobiles, relevant simulation experiments are often carried out on the driving performance of the automobiles, so that the driving performance of the automobiles is researched and improved.

Due to the limitation of site factors, the automobile needs to be braked after the simulation experiment is finished, so that the automobile stops moving in a limited site. In the related art, the braking of the automobile is realized through a hydraulic braking oil cylinder, specifically, the hydraulic braking oil cylinder is fixedly installed, and then the automobile and the hydraulic braking oil cylinder are connected together through a rope. The rope is in a loose state before testing, and the rope is in a tight state after testing, so that a piston rod of the hydraulic brake cylinder is acted, the piston is driven to extrude hydraulic oil to be discharged outwards to absorb kinetic energy of the automobile, and the aim of braking is fulfilled.

However, the mass of the vehicle varies from vehicle to vehicle, and therefore the braking force required varies. The braking force of the hydraulic brake cylinder cannot be adjusted, so that the hydraulic brake cylinder cannot be suitable for braking automobiles with different qualities.

Disclosure of Invention

The embodiment of the disclosure provides a hydraulic brake device which can be suitable for braking automobiles with different qualities. The technical scheme is as follows:

the disclosed embodiment provides a hydraulic brake device, which comprises a shell, a driving assembly and a plurality of brake cylinders;

an oil outlet is formed in the outer wall of the shell;

the brake oil cylinder comprises a cylinder body, a piston rod and a rotating sleeve, for any one brake oil cylinder, the cylinder body is positioned on the inner wall of the cavity of the shell, the peripheral wall of the cylinder body is provided with a first through hole and an oil inlet, the piston is coaxially inserted in the cylinder body, the outer peripheral wall of the piston is in running fit with the inner peripheral wall of the cylinder body, one part of the piston rod is coaxially inserted in the piston, the other part of the piston rod extends out relative to the shell and is used for being connected with the moving body, the rotating sleeve is rotatably and coaxially sleeved on the cylinder body, a plurality of second through holes are formed in the circumferential wall of the rotating sleeve in the circumferential direction, the second through holes are located on the radial section of the rotating sleeve where the first through holes are located, the aperture of each second through hole located on the same radial section decreases progressively along the circumferential direction, and the second through holes are respectively communicated with the first through holes and the oil drain port;

the driving assembly is configured to drive the plurality of rotating sleeves to rotate synchronously.

Optionally, each of the second through holes is a tapered hole, and the aperture of each of the second through holes gradually increases in a direction from the outer circumferential wall of the rotating sleeve to the inner circumferential wall of the rotating sleeve.

Optionally, the driving assembly includes a rotating column, a driving gear and a plurality of driven gears, the rotating column is rotatably inserted into the inner wall of the housing, an end of a first end of the rotating column penetrates through the inner wall of the housing, the driving gear is coaxially sleeved on a second end of the rotating column, the plurality of driven gears and the plurality of rotating sleeves are in one-to-one correspondence, each driven gear is coaxially located at an end of the corresponding rotating sleeve, which is away from the other portion of the piston rod, the plurality of driven gears are circumferentially spaced along the driving gear, and each driven gear is engaged with the driving gear.

Alternatively, the outer circumferential wall of each cylinder block has an outer flange, the inner wall of the housing has an inner flange, and both end portions of each rotating sleeve are rotatably interposed between the inner flange and the corresponding outer flange.

Optionally, the rotating column is provided with a handle for driving the rotating column to rotate, and the handle is located at the first end of the rotating column.

Optionally, the handle includes an insertion column and a circular plate, a first end of the insertion column is coaxially inserted into the first end of the rotation column, a second end of the insertion column is perpendicularly connected to the circular plate, the circular plate has a third through hole, a plurality of fourth through holes are circumferentially arranged on the outer wall of the housing at intervals, and the same pin shaft can be inserted into the third through hole and one of the fourth through holes.

Optionally, the cylinder body comprises a front cover, a rear cover and a cylinder barrel, the front cover is detachably and hermetically inserted into the first end of the cylinder barrel, the rear cover is detachably and hermetically inserted into the second end of the cylinder barrel, and the front cover and the rear cover are detachably connected with the inner wall of the housing.

Optionally, the front cover includes a first protrusion, a second protrusion, and a cover plate, where the first protrusion and the second protrusion are respectively located on two opposite plate surfaces of the cover plate, the first protrusion is detachably inserted into the inner wall of the housing, and the second protrusion is detachably inserted into the cylinder.

Optionally, the hydraulic brake device further comprises a mounting assembly, the mounting assembly comprises a bottom plate and a pillow plate, the bottom of the pillow plate is vertically connected with the bottom plate, the top of the pillow plate is provided with a groove, and the outer wall of the shell is inserted into the groove.

Optionally, the inner peripheral wall of the rotating sleeve is provided with a lubricating groove, the lubricating groove is located between the rotating sleeve and the cylinder body, and lubricating oil is filled in the lubricating groove.

The technical scheme provided by the embodiment of the disclosure has the following beneficial effects:

according to the hydraulic braking device provided by the embodiment of the disclosure, before braking, the hose is connected with the oil inlet, so that hydraulic oil is filled into the cylinder body from the outside through the hose and the oil inlet, and the piston rod retracts under the driving of the piston.

After oil filling is finished, the driving assembly synchronously drives the rotating sleeve to select the second through holes with different apertures to be communicated with the first through holes. Because the aperture of the second through hole is different, the damping generated in the hydraulic oil extrusion process is different, so that the work of the hydraulic oil on the piston is different, the kinetic energy of moving bodies with different masses or different speeds can be consumed, and the applicability of the hydraulic brake device is improved.

After the damping adjustment is completed, the moving body is connected with the piston rod through the rope, so that preparation is made for subsequent braking.

When the moving body is braked, the rope is tightened, the moving body moving at a high speed applies an outward pulling acting force to the piston rod, so that the piston moves rightwards and extrudes hydraulic oil, and the hydraulic oil flows out through the first through hole, the second through hole and the oil discharge port in sequence. In the process of flowing the hydraulic oil, the kinetic energy of the moving body is consumed, so that the speed reduction of the moving body is realized.

In addition, the plurality of brake cylinders can simultaneously realize the braking of the moving body, so that the adjustment range of the braking force is enlarged, and the brake device is further suitable for the braking of the moving body with different kinetic energies.

That is to say, the hydraulic braking device that this disclosure provided, through controlling the second through-hole and the first through-hole intercommunication of different apertures, can realize the regulation of the braking force of multiple gear to can be applicable to the moving body braking that has different kinetic energy.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present disclosure, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.

FIG. 1 is a cross-sectional view of a hydraulic brake device provided in an embodiment of the present disclosure;

FIG. 2 is a schematic view of an assembly of a drive gear provided by an embodiment of the present disclosure;

FIG. 3 is a cross-sectional view of a rotating sleeve provided by an embodiment of the present disclosure;

FIG. 4 is a cross-sectional view of a front cover provided by an embodiment of the present disclosure;

fig. 5 is a schematic view of the use of the hydraulic brake device provided in the present embodiment;

fig. 6 is a schematic structural diagram of the mounting assembly provided in the present embodiment.

The symbols in the drawings represent the following meanings:

1. a housing; 11. an oil discharge port; 12. an inner flange; 13. a fourth via hole; 14. a shell; 15. a front end cover; 16. a rear end cap;

2. a drive assembly; 21. rotating the column; 211. a handle; 2111. inserting a column; 2112. a circular plate; 2113. a third through hole; 212. a hexagonal counter bore; 22. a driving gear; 23. a driven gear;

3. a brake cylinder; 31. a cylinder body; 311. a first through hole; 312. an oil inlet; 313. an outer flange; 314. a front cover; 3141. a first protrusion; 3142. a second protrusion; 3143. a cover plate; 315. a rear cover; 316. a cylinder barrel; 32. a piston; 33. a piston rod; 331. a hook body; 332. a connecting plate; 34. rotating the sleeve; 341. a second through hole; 3411. a first tapered bore; 3412. a second tapered bore; 3413. a third tapered bore;

4. a pin shaft;

5. mounting the component; 51. a base plate; 52. a pillow plate; 521. a groove; 53. reinforcing ribs;

6. a lubrication groove;

101. a first bolt; 102. a second bolt; 103. a third bolt; 104. a fourth bolt; 105. a fifth bolt; 200. a moving body; 300. and (5) sealing rings.

Detailed Description

To make the objects, technical solutions and advantages of the present disclosure more apparent, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings.

The disclosed embodiment provides a hydraulic brake device for braking a moving body 200. In the present embodiment, the moving body 200 may be an automobile, a material cart, or the like.

Fig. 1 is a sectional view of a hydraulic brake device according to an embodiment of the present disclosure, and as shown in fig. 1, the hydraulic brake device includes a housing 1, a driving assembly 2, and a plurality of brake cylinders 3.

The outer wall of the housing 1 has an oil drain port 11.

The brake cylinder 3 comprises a cylinder body 31, a piston 32, a piston rod 33 and a rotating sleeve 34, for any one brake cylinder 3, the cylinder body 31 is positioned on the inner wall of the cavity of the shell 1, the peripheral wall of the cylinder body 31 is provided with a first through hole 311 and an oil inlet 312, the piston 32 is coaxially inserted in the cylinder body 31, and the outer peripheral wall of the piston 32 is rotationally fitted with the inner peripheral wall of the cylinder 31, a part of the piston rod 33 is coaxially inserted in the piston 32, the other part of the piston rod 33 extends out of the housing 1 and is used for being connected with the moving body 200, the rotating sleeve 34 is rotatably and coaxially sleeved on the cylinder body 31, a plurality of second through holes 341 are circumferentially arranged on the peripheral wall of the rotating sleeve 34, each second through hole 341 is positioned on the radial section of the rotating sleeve 34 where the first through hole 311 is positioned, the hole diameter of each second through hole 341 positioned on the same radial section decreases progressively along the circumferential direction, and the second through holes 341 are respectively communicated with the first through hole 311 and the oil drain port 11.

The drive assembly 2 is configured to drive the plurality of rotating sleeves 34 in synchronous rotation.

In the hydraulic brake device provided by the embodiment of the present disclosure, before braking, the hose is connected to the oil inlet 312, so that hydraulic oil is filled into the cylinder 31 from the outside through the hose and the oil inlet 312, and the piston rod 33 is retracted by driving of the piston 32.

After oil filling is finished, the driving assembly 2 synchronously drives the rotating sleeve 34 to select the second through holes 341 with different apertures to be communicated with the first through holes 311. Because the apertures of the second through holes 341 are different, the damping generated during the extrusion process of the hydraulic oil is also different, so that the work of the hydraulic oil on the piston 32 is also different, the kinetic energy of the moving body 200 with different masses or different speeds can be consumed, and the applicability of the hydraulic brake device is improved.

After the damping adjustment is completed, the moving body 200 is connected to the piston rod 33 by a rope, thereby being ready for subsequent braking.

When the moving body 200 is braked, the rope is tightened, and the moving body 200 moving at a high speed applies an outward pulling force to the piston rod 33, so that the piston 32 moves to the right and presses hydraulic oil, which flows out through the first through hole 311, the second through hole 341, and the oil drain port 11 in sequence. In the process of the flow of the hydraulic oil, the kinetic energy of the moving body 200 is consumed, thereby achieving deceleration of the moving body 200.

In addition, the plurality of brake cylinders 3 can simultaneously brake the moving body 200, so that the adjustment range of the braking force is enlarged, and the brake device can be further applied to brake the moving body 200 with different kinetic energies.

That is, the hydraulic brake device provided by the present disclosure can realize adjustment of braking force of a plurality of gears by controlling the second through hole 341 with different apertures to communicate with the first through hole 311, and thus can be applied to braking of the moving body 200 with different kinetic energies.

With reference to fig. 1, the driving assembly 2 includes a rotation column 21, a driving gear 22 and a plurality of driven gears 23, the rotation column 21 is rotatably inserted into the inner wall of the housing 1, an end of a first end of the rotation column 21 penetrates through the inner wall of the housing 1, the driving gear 22 is coaxially sleeved on a second end of the rotation column 21, the plurality of driven gears 23 and the plurality of rotation sleeves 34 are in one-to-one correspondence, each driven gear 23 is coaxially located at an end of another portion of the corresponding rotation sleeve 34, which is away from the piston rod 33, the plurality of driven gears 23 are circumferentially spaced along the driving gear 22, and each driven gear 23 is engaged with the driving gear 22.

In the above embodiment, by driving the rotation column 21 to rotate, the driving gear 22 can be synchronously driven to rotate, and further the plurality of driven gears 23 and the rotation sleeve 34 are driven to rotate, so that the second through hole 341 with a suitable aperture can be selected to brake the moving body 200.

In the present embodiment, the number of the brake cylinders 3 may be 3, and 3 driven gears 23 are arranged at regular intervals in the circumferential direction of the driving gear 22, and each driven gear 23 is engaged with the driving gear 22 (see fig. 2).

It should be noted that the number of the brake cylinders 3 in the housing 1 may also be 4, 5, etc., which is not limited by the present disclosure.

Illustratively, the right end of the rotating sleeve 34 is connected together with the driven gear 23 by the first bolt 101.

In the above embodiment, the first bolt 101 connects the driven gear 23 and the rotating sleeve 34, so that the connection therebetween can be more stable and prevented from being disengaged.

Illustratively, a seal ring 300 is provided between the outer peripheral wall of the rotary post 21 and the housing 1.

In the above embodiment, the seal ring 300 functions to prevent leakage of the hydraulic oil.

With continued reference to fig. 1, the rotary post 21 has a handle 211 thereon for driving the rotary post 21 to rotate, and the handle 211 is located at a first end of the rotary post 21.

In the above embodiment, the handle 211 facilitates the rotation of the rotary post 21, so that the second through hole 341 with a suitable diameter is selected for braking.

Illustratively, the handle 211 is driven to rotate by an external force, and the handle 211 drives the rotating column 21 to rotate, so as to drive the driving gear 22 and the plurality of driven gears 23 to rotate, so that the second through hole 341 and the first through hole 311 which are adaptive to the aperture are communicated.

Optionally, the handle 211 includes an insertion post 2111 and a circular plate 2112, a first end of the insertion post 2111 is coaxially inserted into the first end of the rotation post 21, a second end of the insertion post 2111 is vertically connected to the circular plate 2112, the circular plate 2112 has a third through hole 2113, a plurality of fourth through holes 13 are circumferentially arranged on the outer wall of the housing 1 at intervals, and the same pin 4 can be inserted into the third through hole 2113 and one fourth through hole 13.

In the above embodiment, the handle 211 can be limited by the pin 4, so as to prevent the circular plate 2112 from rotating, and also to prevent the driving gear 22 and the driven gear 23, thereby avoiding the problem that the first through hole 311 and the second through hole 341 are misaligned due to the relative rotation between the rotating sleeve 34 and the cylinder 31 in the braking process.

Illustratively, the rotating post 21 has a hexagonal counterbore 212 (see FIG. 2) and the post 2111 is a hexagonal cylinder to facilitate insertion of the post 2111 on the rotating post 21.

Alternatively, the outer peripheral wall of each cylinder 31 has an outer flange 313, the inner wall of the housing 1 has an inner flange 12, and both end portions of each rotating sleeve 34 are rotatably interposed between the inner flange 12 and the corresponding outer flange 313.

In the above embodiment, the inner flange 12 and the outer flange 313 can limit the axial position of the rotating sleeve 34, and prevent the rotating sleeve 34 from being axially displaced during the rotation, thereby preventing the first through hole 311 and the second through hole 341 from being axially displaced in the rotating sleeve 34.

Fig. 3 is a cross-sectional view of the rotating sleeve provided in the embodiment of the present disclosure, and as shown in fig. 3, each of the second through holes 341 is a tapered hole, and the hole diameter of each of the second through holes 341 gradually increases in a direction from the outer circumferential wall of the rotating sleeve 34 to the inner circumferential wall of the rotating sleeve 34.

In the above embodiment, the second through hole 341 is a tapered hole, which can effectively prevent the hydraulic oil from flowing from the first through hole 311 to the second through hole 341 when there is a certain misalignment between the second through hole 341 and the first through hole 311.

Illustratively, in the present embodiment, the rotating sleeve 34 is uniformly provided with a plurality of second through holes 341 along the axial direction of the rotating sleeve 34, and there are 3 kinds of second through holes 341 with different bore diameters on the same radial section of the rotating sleeve 34, for example: the first tapered hole 3411, the second tapered hole 3412 and the third tapered hole 3413 have inner diameters that decrease in order, so that the hydraulic brake device has braking forces of a plurality of different gears. When the moving body 200 has a small mass, the first taper hole 3411 is selected to communicate with the first through hole 311. When the moving body 200 has a large mass, the second tapered hole 3412 is selected to communicate with the first through hole 311. When the moving body 200 has the maximum mass, the third tapered hole 3413 is selected to communicate with the first through hole 311.

In addition, two second through holes 341 of each aperture are arranged in the same radial direction (any two adjacent second through holes 341 of the same radial cross section have an included angle of 60 °). The cylinder 31 is uniformly provided with a plurality of first through holes 311 along the axial direction of the cylinder 31, and two first through holes 311 are provided on the same radial section of the cylinder 31, and the two first through holes 311 are arranged in the same radial direction (the included angle between the two first through holes 311 on the same radial section is 180 °).

That is, when the driving assembly 2 rotates the rotating sleeve 34, when one second through hole 341 communicates with one first through hole 311, another second through hole 341 having the same diameter communicates with another first through hole 311.

Alternatively, the inner peripheral wall of the rotating sleeve 34 has a lubrication groove 6, the lubrication groove 6 is located between the rotating sleeve 34 and the cylinder 31, and the lubrication groove 6 is filled with lubricating oil.

In the above embodiment, the lubrication groove 6 plays a role of lubrication, so as to reduce the friction force received when the rotating sleeve 34 and the cylinder 31 rotate, thereby facilitating the rotation of the rotating sleeve 34 by the driving assembly 2 and selecting a proper braking force.

Illustratively, the lubrication grooves 6 are of a spiral structure, the lubrication grooves 6 are uniformly arranged along the axial direction of the cylinder 31, and the length of the lubrication grooves 6 in the axial direction of the cylinder 31 coincides with the length of the cylinder 31.

Referring to fig. 1 again, the housing 1 includes a shell 14, a front end cover 15 and a rear end cover 16, the front end cover 15 is inserted into the left end of the shell 14 and is in threaded connection with the shell 14, the rear end cover 16 is connected with the right end of the shell 14 through a second bolt 102, and the front end cover 15 is in threaded connection with the shell 14 and the rear end cover 16 is in threaded connection with the shell 14, so that the brake cylinder 3 is conveniently dismounted in the housing 1.

In addition, the housing 1 forms a sealed space by the shell 14, the front end cover 15 and the rear end cover 16, and this sealed space may be formed as a communication passage of the second through hole 341 with the oil drain port 11. That is, the cavity of the housing 1 communicates with the second through hole 341 and the oil drain port 11, respectively.

Alternatively, the cylinder block 31 includes a front cover 314, a rear cover 315, and a cylinder 316, the front cover 314 being detachably sealingly inserted into a first end of the cylinder 316, the rear cover 315 being detachably sealingly inserted into a second end of the cylinder 316, and both the front cover 314 and the rear cover 315 being detachably coupled to an inner wall of the housing 1.

In the above embodiment, the cylinder 31 may form a sealed chamber by the front cover 314, the rear cover 315 and the cylinder 316, thereby accommodating the piston 32 and the hydraulic oil. In addition, the connection of the cylinder 31 and the housing 1 can be achieved by the front cover 314 and the rear cover 315, thereby achieving the stable installation of the cylinder 31.

Illustratively, the connection of the rear cover 16 and the rear cover 315 is achieved by a third bolt 103.

It should be noted that the driven gear 23 may be a ring structure, so that the third bolt 103 can pass through the through hole in the driven gear 23 to connect the rear cover 16 and the rear cover 315 together.

Fig. 4 is a cross-sectional view of the front cover according to the embodiment of the present disclosure, and as shown in fig. 4, the front cover 314 includes a first protrusion 3141, a second protrusion 3142, and a cover plate 3143, where the first protrusion 3141 and the second protrusion 3142 are respectively located on two opposite plate surfaces of the cover plate 3143, the first protrusion 3141 is detachably inserted into the inner wall of the housing 1, and the second protrusion 3142 is detachably inserted into the cylinder 316.

In the above embodiment, the connection between the front cover 314 and the front cover 15 is achieved by the connection between the first protrusion 3141 and the second protrusion 3142, and the connection strength between the cylinder 31 and the housing 1 is further ensured.

Illustratively, the outer walls of the first protrusion 3141 and the second protrusion 3142 are provided with threads, the threads on the first protrusion 3141 may enable the connection between the front cover 314 and the front cover 15, and the threads on the second protrusion 3142 may enable the connection between the front cover 314 and the cylinder 316.

In the present embodiment, the cylinder 316 and the shell 14 are connected together by the fourth bolt 104.

In the above embodiment, the cylinder 316 and the shell 14 are connected together by the fourth bolt 104, so that the cylinder 316 can be fixed, thereby further increasing the mounting strength of the cylinder 31.

Fig. 5 is a schematic view of the hydraulic brake device provided in the present embodiment, and as shown in fig. 5, the first end of the piston rod 33 has a hook 331 for connecting with the moving body 200.

In the above embodiment, the hook 331 functions as a connection rope, thereby facilitating the connection of the piston rod 33 and the moving body 200.

Illustratively, a connecting plate 332 is arranged between the hook body 331 and the piston rod 33, the right part of the hook body 331 is inserted into one plate surface of the connecting plate 332 and is in threaded fit with the connecting plate 332, and the left end of the piston rod 33 is inserted into the other plate surface of the connecting plate 332 and is in threaded fit with the connecting plate 332.

Fig. 6 is a schematic structural diagram of the mounting assembly provided in this embodiment, and as shown in fig. 6, the hydraulic brake device further includes a mounting assembly 5, the mounting assembly 5 includes a bottom plate 51 and a pillow plate 52, a bottom of the pillow plate 52 is vertically connected to the bottom plate 51, a top of the pillow plate 52 has a groove 521, and an outer wall of the housing 1 is inserted into the groove 521.

In the above embodiment, the pillow plate 52 functions to fix the housing 1, and the bottom plate 51 functions to fix the entire hydraulic brake device, thereby preventing the housing 1 from moving during braking.

Illustratively, the housing 1 is a cylindrical structure, the recess 521 is an arc-shaped recess 521, and the outer circumferential wall of the housing 1 is inserted into the recess 521, so as to fix the housing 1.

Illustratively, a plurality of through holes are uniformly arranged on the bottom plate 51 along the outer edge of the bottom plate 51, a fifth bolt 105 is inserted into each through hole, and the bottom plate 51 is fixed by the plurality of fifth bolts 105.

Illustratively, the pillow plate 52 and the housing 1 are welded together.

In the above embodiment, the weld connection can increase the connection strength of the pillow plate 52 and the case 1, thereby increasing the fixing strength of the case 1.

Optionally, the mounting assembly 5 further comprises a plurality of reinforcing ribs 53 for connecting the pillow plate 52 and the base plate 51.

In the above embodiment, the reinforcing ribs 53 serve to reinforce the connection between the pillow plate 52 and the bottom plate 51, thereby increasing the structural strength of the entire mounting assembly 5.

The hydraulic braking device provided by the disclosure has the following characteristics:

1. a plurality of brake cylinders 3 can be uniformly arranged in the shell 1, and the brake gears of the brake cylinders 3 can be adjusted at the same time through the driving assembly 2;

2. the hydraulic brake device is of a mechanical structure, has a locking function, is simple in structure and high in reliability, and can be suitable for braking moving bodies 200 with different masses.

The operation of the hydraulic brake device provided by the present disclosure is briefly described as follows:

before braking, the hose is connected with the oil inlet 312, so that hydraulic oil is filled into the cylinder 31 from the outside through the oil inlet 312, the piston rod 33 is retracted under the driving of the piston 32, and the moving body 200 is connected with the piston rod 33 through a rope, so that preparation is made for subsequent braking.

When the moving body 200 with small kinetic energy is braked, the pin shaft 4 is taken down, the handle 211 is rotated, the handle 211 drives the rotating column 21 to rotate, and then the driving gear 22 and the driven gears 23 are driven to rotate, so that the second through hole 341 with a large aperture is communicated with the first through hole 311. After the rope is tightened, the moving body 200 running at high speed has an outward pulling force on the piston rod 33, the piston 32 moves to the right and extrudes hydraulic oil, and the hydraulic oil flows out through the first through hole 311, the second through hole 341 and the oil outlet 11 in sequence. In the process of the flow of the hydraulic oil, the kinetic energy of the moving body 200 is consumed, so that the moving body 200 is decelerated, and a subsequent braking test can be performed.

Similarly, when the moving body 200 with large kinetic energy is braked, the second through hole 341 with a smaller diameter is communicated with the first through hole 311, so that the subsequent braking test can be performed.

That is, the hydraulic brake device provided by the present disclosure can realize adjustment of braking force of a plurality of gears by controlling the second through hole 341 with different apertures to communicate with the first through hole 311, and thus can be applied to braking of moving bodies 200 with different masses.

The above description is intended to be exemplary only and not to limit the present disclosure, and any modification, equivalent replacement, or improvement made without departing from the spirit and scope of the present disclosure is to be considered as the same as the present disclosure.

Claims

1. A hydraulic brake device, characterized in that it comprises a housing (1), a drive assembly (2) and a plurality of brake cylinders (3);

an oil drain port (11) is formed in the outer wall of the shell (1);

the brake oil cylinder (3) comprises a cylinder body (31), a piston (32), a piston rod (33) and a rotating sleeve (34), for any one brake oil cylinder (3), the cylinder body (31) is positioned on the inner wall of a cavity of the shell (1), the peripheral wall of the cylinder body (31) is provided with a first through hole (311) and an oil inlet (312), the piston (32) is coaxially inserted in the cylinder body (31), the peripheral wall of the piston (32) is in rotating fit with the inner peripheral wall of the cylinder body (31), one part of the piston rod (33) is coaxially inserted in the piston (32), the other part of the piston rod (33) extends out relative to the shell (1) and is connected with the moving body (200), the rotating sleeve (34) is rotatably and coaxially sleeved on the cylinder body (31), and the peripheral wall of the rotating sleeve (34) is circumferentially provided with a plurality of second through holes (341), each second through hole (341) is located on a radial section of the rotating sleeve (34) where the first through hole (311) is located, the aperture of each second through hole (341) located on the same radial section decreases progressively along the circumferential direction, and the second through holes (341) are respectively communicated with the first through holes (311) and the oil drain port (11);

the driving assembly (2) is configured to drive a plurality of the rotating sleeves (34) to rotate synchronously.

2. The hydraulic brake device according to claim 1, wherein each of the second through holes (341) is a tapered hole, and a hole diameter of each of the second through holes (341) is gradually increased in a direction from an outer circumferential wall of the rotating sleeve (34) to an inner circumferential wall of the rotating sleeve (34).

3. Hydraulic braking device according to claim 1, characterized in that the drive assembly (2) comprises a rotary column (21), a driving gear (22) and a plurality of driven gears (23), the rotating column (21) is rotatably inserted into the inner wall of the shell (1), and the end of the first end of the rotating column (21) penetrates through the inner wall of the shell (1), the driving gear (22) is coaxially sleeved on the second end of the rotating column (21), the driven gears (23) are in one-to-one correspondence with the rotating sleeves (34), each driven gear (23) is coaxially positioned at one end part of the other part of the corresponding rotating sleeve (34) departing from the piston rod (33), the driven gears (23) are arranged at intervals along the circumferential direction of the driving gear (22), and each driven gear (23) is meshed with the driving gear (22).

4. A hydraulic braking device according to claim 3, characterised in that the peripheral wall of each cylinder (31) has an outer flange (313), the inner wall of the casing (1) has an inner flange (12), and the two end portions of each rotating sleeve (34) are rotatably interposed between the inner flange (12) and the corresponding outer flange (313).

5. A hydraulic brake arrangement according to claim 3, characterised in that the rotary post (21) has a handle (211) thereon for driving the rotary post (21) in rotation, and that the handle (211) is located at a first end of the rotary post (21).

6. The hydraulic brake device according to claim 5, wherein the handle (211) comprises an insert post (2111) and a circular plate (2112), a first end of the insert post (2111) is coaxially inserted into a first end of the rotating post (21), a second end of the insert post (2111) is vertically connected with the circular plate (2112), the circular plate (2112) is provided with a third through hole (2113), a plurality of fourth through holes (13) are circumferentially arranged on the outer wall of the housing (1) at intervals, and the same pin shaft (4) can be inserted into the third through hole (2113) and one of the fourth through holes (13).

7. The hydraulic brake device according to claim 1, wherein the cylinder block (31) comprises a front cover (314), a rear cover (315) and a cylinder (316), the front cover (314) is detachably and hermetically inserted into a first end of the cylinder (316), the rear cover (315) is detachably and hermetically inserted into a second end of the cylinder (316), and the front cover (314) and the rear cover (315) are detachably connected with an inner wall of the housing (1).

8. The hydraulic brake device as recited in claim 7, wherein the front cover (314) comprises a first protrusion (3141), a second protrusion (3142) and a cover plate (3143), the first protrusion (3141) and the second protrusion (3142) are respectively located on two opposite plate surfaces of the cover plate (3143), the first protrusion (3141) is detachably inserted into the inner wall of the housing (1), and the second protrusion (3142) is detachably inserted into the cylinder (316).

9. The hydraulic brake device according to any one of claims 1 to 8, further comprising a mounting assembly (5), wherein the mounting assembly (5) comprises a bottom plate (51) and a pillow plate (52), the bottom of the pillow plate (52) is vertically connected with the bottom plate (51), the top of the pillow plate (52) is provided with a groove (521), and the outer wall of the housing (1) is inserted into the groove (521).

10. The hydraulic brake device according to any one of claims 1 to 8, wherein the inner peripheral wall of the rotating sleeve (34) has a lubrication groove (6), the lubrication groove (6) is located between the rotating sleeve (34) and the cylinder block (31), and the lubrication groove (6) is filled with lubricating oil.