阅读说明：本技术 一种汽车行驶用制动装置 (Braking device for automobile running ) 是由 韩梦珂 于 2021-01-05 设计创作，主要内容包括：本发明涉及汽车制动技术领域,且公开了一种汽车行驶用制动装置,包括底板,底板正面的四周固定安装有制动鼓,所述底板的正面等圆周分布固定安装有制动缸,所述制动缸的两侧对称固定安装有调节装置,所述底板正面位于套孔外圈的位置均匀固定安装有限位驱动块,所述限位驱动块的外圈活动套接有顶块,所述顶块的外侧固定连接有制动蹄,所述限位驱动块的正面与制动蹄的正面中部之间固定连接有复位弹簧,所述调节装置内部开设有闭环的油槽,所述油槽靠近制动蹄的一侧活动套接有滑块,所述油槽靠近限位驱动块的一侧活动套接有活塞块,利用制动蹄的结构改变和调节装置的设计提高了制动时的安全性。(The invention relates to the technical field of automobile braking, and discloses a braking device for automobile running, which comprises a bottom plate, wherein a brake drum is fixedly arranged on the periphery of the front surface of the bottom plate, the front surface of the bottom plate is distributed and fixedly provided with brake cylinders in an equal circumference way, the two sides of each brake cylinder are symmetrically and fixedly provided with adjusting devices, the front surface of the bottom plate is uniformly and fixedly provided with a limiting driving block at the position of the outer ring of the trepanning, the outer ring of the limiting driving block is movably sleeved with a top block, the outer side of the top block is fixedly connected with a brake shoe, a return spring is fixedly connected between the front face of the limit driving block and the middle part of the front face of the brake shoe, a closed-loop oil groove is arranged in the adjusting device, a sliding block is movably sleeved on one side of the oil groove close to the brake shoe, the piston block is movably sleeved on one side, close to the limiting driving block, of the oil groove, and the safety during braking is improved by means of structural change of the brake shoe and design of the adjusting device.)

1. The utility model provides a car is gone and is used arresting gear, includes bottom plate (1), and bottom plate (1) is positive fixed mounting all around has brake drum (2), and trepanning (101), its characterized in that have been seted up at the middle part of bottom plate (1): the brake shoe is characterized in that brake cylinders (3) are fixedly arranged on the front surface of the bottom plate (1) in an equicircumferential distribution manner, adjusting devices (4) are fixedly arranged on the two sides of the brake cylinders (3) in a symmetrical manner, a limiting driving block (6) is fixedly arranged on the position, located on the outer ring of the trepanning (101), of the bottom plate (1) in the front surface, in an even manner, a reset spring (8) is fixedly connected between the front surface of the limiting driving block (6) and the middle part of the front surface of the brake shoe (5), a top block (10) is movably sleeved on the outer ring of the limiting driving block (6), brake shoes (5) are fixedly connected on the outer side of the top block (10), two oil guide pipes (9) are fixedly connected with one end of each brake cylinder (3) and are fixedly connected with the limiting driving blocks (6) on the two sides respectively, connecting guide blocks (7, the limiting driving device is characterized in that a driving oil cavity (601) is formed in the limiting driving block (6), a limiting block (11) is fixedly mounted in the driving oil cavity (601) close to one side of the trepanning (101), and a limiting groove (1001) movably sleeved with the limiting block (11) is formed in one end, located inside the limiting driving block (6), of the top block (10).

2. A vehicular brake apparatus according to claim 1, wherein: adjusting device (4) inside oil groove (401) of offering the closed loop, slider (12) have been cup jointed in the activity of one side that oil groove (401) are close to brake shoe (5), piston block (13) have been cup jointed in the activity of one side that oil groove (401) are close to spacing drive block (6), spacing hole (1301) have been offered to one side that piston block (13) are close to slider (12), slider (12) are close to spacing flexible piece (14) of cup jointing in spacing hole (1301) in the activity of one side fixedly connected with one end of piston block (13), fixed mounting has check valve (15) apart from piston block (13) one section distance department inside oil groove (401).

3. A vehicular brake apparatus according to claim 1, wherein: the one end that kicking block (10) stretched into inside drive oil pocket (601) is semicircle form, the both sides of drive oil pocket (601) all communicate with oil pipe (9) and are full of hydraulic oil, stopper (11) are located drive oil pocket (601) and just middle part and will drive oil pocket (601) and seal apart.

4. A vehicular brake apparatus according to claim 1, wherein: the two sides of the brake shoe (5) are parallel to the side edge of the adjusting device (4), and the diameter of the outer ring of the brake shoe (5) is the same as that of the inner ring of the brake drum (2).

5. A vehicular brake apparatus according to claim 2, wherein: adjusting device (4) are close to brake shoe (5) one side and offer the gliding breach groove of confession connecting guide block (7) and the length of this breach is greater than the braking clearance of brake shoe (5), the inside space that is located between slider (12) and check valve (15) of oil groove (401) fills certain hydraulic oil and is not full of the cell body.

Technical Field

The invention relates to the technical field of automobile braking, in particular to a braking device for automobile running.

Background

The drum brake is a brake device commonly used for automobiles, a hydraulic brake cylinder is used for driving a brake shoe to rub with a brake drum around to achieve a braking effect, the brake shoe is divided into a leading shoe type and a double leading shoe type according to the design of the brake shoe, however, the principle of the brake shoe is the same, the leading shoe type is applied mostly, and the brake devices with different designs have certain problems:

1. when the brake shoe is jacked by the brake cylinder, the mode that one end of the brake shoe jacks and the other end of the brake shoe rotates is adopted, so that the contact area between the brake shoe and the brake drum is very small, on one hand, the local friction loss is large, and a large amount of heat energy can be generated due to the small area of the contact point, so that the brake drum deforms, on the other hand, the brake effect caused by the small contact area is poor, and meanwhile, under the condition of large local friction loss, the service life of the drum brake is short, the brake effect is poor, which is the reason that the disc brake is applied more nowadays, and when the car is backed and braked, the two brake shoes are changed into trailing shoes, so that the brake effect is greatly reduced, and certain potential safety hazard exists;

2. the brake shoe is continuously rubbed when braking, so that the gap between the brake shoe and the brake drum is enlarged after the brake shoe is used for a period of time, more brakes are needed to be stepped on if the same braking effect as the previous braking effect is needed, the braking effect is reduced, the braking precision is also problematic, the braking accident is easily caused if the brake device is not replaced for a long time, and great hidden danger is caused to the safety.

Disclosure of Invention

In view of the above-mentioned shortcomings of the background art, the present invention provides a braking device for vehicle driving, which has the advantages of good braking effect and high safety, and solves the problems of the background art.

The invention provides the following technical scheme: a braking device for automobile running comprises a bottom plate, wherein a brake drum is fixedly installed on the periphery of the front face of the bottom plate, a trepanning is formed in the middle of the bottom plate, brake cylinders are fixedly installed on the front face of the bottom plate in an equi-circumferential distribution mode, adjusting devices are fixedly installed on two sides of each brake cylinder in a symmetrical mode, a limiting driving block is uniformly and fixedly installed in the position, located on the outer circle of the trepanning, of the front face of the bottom plate, a jacking block is movably sleeved on the outer circle of the limiting driving block, brake shoes are fixedly connected to the outer sides of the jacking block, a reset spring is fixedly connected between the front face of the limiting driving block and the middle portion of the front face of each brake shoe, two oil guide pipes are fixedly connected to one end of each brake cylinder and are respectively and fixedly connected with the limiting driving blocks on two sides of each, a limiting block is fixedly mounted on one side, close to the trepanning, of the inside of the driving oil cavity, and a limiting groove movably sleeved with the limiting block is formed in one end, located inside the limiting driving block, of the ejector block.

Preferably, the inside oil groove of seting up closed loop of adjusting device, the slider has been cup jointed in the activity of one side that the oil groove is close to the brake shoe, the piston piece has been cup jointed in the activity of one side that the oil groove is close to spacing drive block, spacing hole has been seted up to one side that the piston piece is close to the slider, the slider is close to one side fixedly connected with one end activity of piston piece and cup joints the spacing flexible piece in spacing hole, the inside distance department fixed mounting of piston piece of distance of oil groove has the check valve.

Preferably, the top block stretches into the inside one end of drive oil pocket and is the semicircle form, the both sides of drive oil pocket all with lead oil pipe intercommunication and be full of hydraulic oil, the stopper is located drive oil pocket and just middle part and will drive the oil pocket and seal apart.

Preferably, two sides of the brake shoe are parallel to the side edge of the adjusting device, and the diameter of the outer ring of the brake shoe is the same as that of the inner ring of the brake drum.

Preferably, one side of the adjusting device, which is close to the brake shoe, is provided with a notch groove for connecting the guide block to slide, the length of the notch is greater than the brake clearance of the brake shoe, and a space between the sliding block and the one-way valve inside the oil groove is filled with certain hydraulic oil and is not filled with the groove body.

The invention has the following beneficial effects:

1. through having set up multiunit brake shoe structure and changing the drive of brake shoe into outwards from the bottom plate middle part, and all set up the driving source in spacing driving block both sides, compare in prior art, can realize that two liang of spacing driving blocks provide the same hydraulic pressure when utilizing the brake cylinder braking, and remove the brake shoe from the outside circle in bottom plate middle part, the area of having increased friction like this improves the effect of braking, simultaneously so also greatly reduced the big problem of local friction loss, also can play better effect simultaneously when backing a car the braking, can not cause the brake shoe to become the condition of two trailing shoes, the security is higher.

2. Through setting up adjusting device in the both sides of brake shoe, and inside the both sides of brake shoe cup jointed adjusting device through being connected to the piece, compare in prior art, utilize the change control piston block's of hydraulic oil in the oil groove removal regulation after braking at every turn, it is spacing to push up check valve with hydraulic oil after the friction loss grow and promote the piston block removal regulation, can restrict the position of slider return like this, thereby adjust the position of brake shoe, guaranteed that the distance between brake shoe and the brake drum is fixed under the non-braking condition, can also guarantee same braking distance after the friction loss like this, the security of braking has been improved.

Drawings

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

FIG. 2 is an overall radial cross-sectional view of the structure of the present invention;

FIG. 3 is an overall axial cross-sectional view of the structure of the present invention;

fig. 4 is an enlarged view of a portion a in fig. 2.

In the figure: 1. a base plate; 101. trepanning; 2. a brake drum; 3. a brake cylinder; 4. an adjustment device; 401. an oil sump; 5. a brake shoe; 6. limiting the driving block; 601. a drive oil chamber; 7. connecting a guide block; 8. a return spring; 9. an oil guide pipe; 10. a top block; 1001. a limiting groove; 11. a limiting block; 12. a slider; 13. a piston block; 1301. a limiting hole; 14. a limiting telescopic block; 15. a one-way valve.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-4, a brake device for automobile driving comprises a bottom plate 1, a brake drum 2 is fixedly installed around the front surface of the bottom plate 1, a trepanning 101 is formed in the middle of the bottom plate 1, brake cylinders 3 are fixedly installed on the front surface of the bottom plate 1 in an equi-circumferential distribution manner, adjusting devices 4 are symmetrically and fixedly installed on two sides of each brake cylinder 3, a limiting driving block 6 is uniformly and fixedly installed at the position of the front surface of the bottom plate 1, which is located at the outer ring of the trepanning 101, a top block 10 is movably sleeved on the outer ring of the limiting driving block 6, brake shoes 5 are fixedly connected to the outer sides of the top block 10, a return spring 8 is fixedly connected between the front surface of the limiting driving block 6 and the middle part of the front surface of each brake shoe 5, two oil guide pipes 9 are fixedly connected to one end of each brake cylinder 3 and are respectively fixedly connected to the, drive oil cavity 601 has been seted up to the inside of spacing drive block 6, the inside of drive oil cavity 601 is close to trepanning 101 one side fixed mounting has stopper 11, the spacing groove 1001 who cup joints with stopper 11 activity is seted up to the inside one end that the kicking block 10 is located spacing drive block 6, adjusting device 4 is inside to have seted up closed loop's oil groove 401, slider 12 has been cup jointed in the activity of one side that oil groove 401 is close to brake shoe 5, piston block 13 has been cup jointed in the activity of one side that oil groove 401 is close to spacing drive block 6, spacing hole 1301 has been seted up to one side that piston block 13 is close to slider 12, slider 12 is close to one side fixedly connected with one end activity of piston block 13 and cup joints spacing flexible piece 14 in spacing hole 1301, oil groove 401 is inside to have check.

Wherein, the one end that kicking block 10 stretched into inside drive oil chamber 601 is semicircle form, the both sides of drive oil chamber 601 all communicate with oil pipe 9 and be full of hydraulic oil, stopper 11 is located drive oil chamber 601 middle part and separates drive oil chamber 601 is sealed, thereby utilize the tip of semicircle form can increase the area of contact with hydraulic oil more to do benefit to its ejecting effect that realizes the braking, thereby a spacing drive block 6 divide into two halves and is driven by two check cylinder 3 respectively simultaneously, can guarantee effectively like this that the hydraulic drive condition that each brake shoe 5 received is the same, the homogeneity of work has been guaranteed.

The two sides of the brake shoe 5 are parallel to the side edges of the adjusting device 4, the diameter of the outer ring of the brake shoe 5 is the same as that of the inner ring of the brake drum 2, the adjusting device 4 plays a certain limiting role, the brake shoe 5 is guaranteed to stretch outwards and cannot be inclined to one side, meanwhile, the outer ring of the brake shoe 5 is the same as that of the inner ring of the brake drum 2, and the brake shoe can be in contact with the inner ring of the brake drum in a braking mode more fully, and therefore the brake effect is better.

The adjusting device 4 is provided with a notch groove for allowing the connecting guide block 7 to slide on one side close to the brake shoe 5, the length of the notch is larger than the brake clearance of the brake shoe 5, the notch is used for being adjusted by the connecting guide block 7, the brake shoe 5 needs to move towards the outer ring for a certain distance after friction, a space between the sliding block 12 and the one-way valve 15 inside the oil groove 401 is filled with certain hydraulic oil and is not filled with the groove body, the sliding block 12 needs to be ensured to have a certain range during braking, and only if the sliding block exceeds the range, the brake shoe 5 is proved to have obvious abrasion, at the moment, the re-braking can extrude the reserved space without extruding the hydraulic oil, and can extrude the hydraulic oil through the one-way valve 15 so that the position of the piston block 13 is changed to adjust the braking position, thereby ensuring the braking effect.

The working principle is that when a driver steps on a brake, the hydraulic oil in the brake cylinder 3 enters a driving oil cavity 601 in a limiting driving block 6 through an oil guide pipe 9 and then acts on a top block 10, the top block 10 extends outwards and drives a brake shoe 5 to move towards an outer ring, two sides of the brake shoe 5 drive sliding blocks 12 to move towards the same direction, when the brake shoe 5 is in contact with a brake drum 2, friction force is generated to play a role in braking to decelerate and stop the automobile, and when the brake is released, the brake shoe 5 is pulled back to the original position under the action of a return spring 8;

when 5 friction losses of brake shoe are great, because step on the brake during the braking can compare in a little bit before, the inside slider 12 of arresting gear is at the inside gliding distance length of side of oil groove 401 this moment, thereby make inside hydraulic oil have partly to extrude piston block 13 position through check valve 15, thereby make piston block 13 move certain distance to the outside, make can only return spacing flexible piece 14's length of return when 5 return of brake shoe, too much return can not, make subsequent brake braking only need step on the same condition can, can realize self-regulation friction clearance compensation, more do benefit to arresting gear's permanent use and security.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.