CN210284179U

CN210284179U - Front steering drive axle drum brake anti-lock brake system

Info

Publication number: CN210284179U
Application number: CN201921176612.0U
Authority: CN
Inventors: 邱恒基
Original assignee: Quanzhou Lipu Machinery Technology Co ltd
Current assignee: Quanzhou Lipu Machinery Technology Co ltd
Priority date: 2019-07-25
Filing date: 2019-07-25
Publication date: 2020-04-10
Anticipated expiration: 2029-07-25

Abstract

The utility model discloses a preceding steering drive axle drum brake anti-lock braking system, including ring gear and ABS sensor, wheel hub's inner periphery in the front is established to the fixed cover of ring gear, ABS sensor fixed mounting just dodges and opens brake shoe on the support, the support passes through the flange screw hole department of bolt fastening lock at the knuckle central siphon, the induction end perpendicular to of ABS sensor the tooth top that corresponds of ring gear. According to the front steering drive axle drum brake anti-lock brake system, the ABS sensor is directly fixed on the steering knuckle axle tube through the support, the mounting is more convenient, the structure is more compact, the fixing is more firm, the shaking is avoided, the position precision is higher, the rotating speed induction result of the front wheel is more accurate, and the manufacturing cost of the steering knuckle shell is reduced.

Description

Front steering drive axle drum brake anti-lock brake system

Technical Field

The utility model relates to a preceding steering drive axle drum brake anti-lock braking system.

Background

A wheel speed sensor of an existing anti-lock brake device is arranged on the outer side surface of a brake bottom plate, and a groove for avoiding the wheel speed sensor is formed in a steering knuckle shell; this mounting structure has the following disadvantages: (1) avoiding grooves need to be manufactured on the steering knuckle shell, so that the production cost of the steering knuckle shell is improved; (2) because there is the error in being connected between stopper bottom plate and the knuckle spindle nose, therefore the position accuracy of wheel speed sensor has the deviation, has reduced the accuracy of response result.

SUMMERY OF THE UTILITY MODEL

In view of the deficiencies of the prior art, an object of the present invention is to provide a front steering drive axle drum brake anti-lock brake system, which can improve the accuracy of the sensing result of the ABS sensor and reduce the manufacturing cost of the knuckle housing.

In order to realize the purpose, the utility model discloses a technical scheme is: the utility model provides a preceding steering drive axle drum brake anti-lock braking system, includes ring gear and ABS sensor, the fixed cover of ring gear is established in the inner periphery of preceding wheel hub, ABS sensor fixed mounting is on the support and dodge and open the stopper shoe, the support passes through the flange screw hole department of bolt fastening lock at the knuckle central siphon, the induction end of ABS sensor perpendicular to the corresponding addendum face of ring gear.

Preferably, the support is an L-shaped steel plate, a vertical through hole is formed in a transverse plate of the L-shaped steel plate, the ABS sensor is fixedly arranged in the vertical through hole in a penetrating mode, a transverse through hole is formed in a vertical plate of the L-shaped steel plate, and the bolt sequentially penetrates through the transverse through hole and the flange threaded hole.

Preferably, the bolt passes through the bracket, the brake spider and the knuckle spindle pipe in this order.

Preferably, the ABS sensor is a linear wheel speed sensor, an annular wheel speed sensor or a hall wheel speed sensor.

Preferably, the sensing end of the ABS sensor is consistent with the tooth shape of the gear ring in size.

Preferably, the inner side wall of the gear ring is in interference fit with the inner end outer side wall of the front hub.

Preferably, a hub reduction gear is mounted in the front hub.

Compared with the prior art, the utility model discloses following beneficial effect has: according to the front steering drive axle drum brake anti-lock brake system, the ABS sensor is directly fixed on the steering knuckle axle tube through the support, the mounting is more convenient, the structure is more compact, the fixing is more firm, the shaking is avoided, the position precision is higher, the rotating speed induction result of the front wheel is more accurate, and the manufacturing cost of the steering knuckle shell is reduced.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention.

Fig. 2 is a partial enlarged view of an embodiment of the present invention.

The labels in the figure are: 1. a front steering drive axle; 2. a drum brake; 21. a brake shoe; 22. a brake spider; 3. a hub reduction gear; 4. a front hub; 5. a knuckle spindle tube; 6. a ring gear; 7. an ABS sensor; 8. a support; 9. and (4) bolts.

Detailed Description

In order to make the aforementioned and other features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.

As shown in fig. 1 and fig. 2, the embodiment provides a front steering drive axle drum brake anti-lock brake system, which includes a gear ring 6 and an ABS sensor 7, wherein the gear ring 6 is fixedly sleeved on the outer periphery of the inner end of a front hub 4, the ABS sensor 7 is fixedly mounted on a bracket 8 and avoids a brake shoe 21, the bracket 8 is fixedly locked at a flange threaded hole of a knuckle axle tube 5 through a bolt 9, and a sensing end of the ABS sensor 7 is perpendicular to a corresponding tooth crest of the gear ring 6.

In this embodiment, support 8 is L shape steel sheet, vertical through-hole has been seted up on the diaphragm of L shape steel sheet, ABS sensor 7 is fixed to be worn to establish in the vertical through-hole, horizontal through-hole has been seted up on the riser of L shape steel sheet, bolt 9 passes in proper order horizontal through-hole with flange screw hole has advantages such as simple structure, cost of manufacture are low, simple to operate, compact.

In this embodiment, the bolt 9 sequentially penetrates through the bracket 8, the brake base plate 22 and the knuckle spindle pipe 5, that is, the bolt 9 simultaneously fixes and locks the brake base plate 22 at the flange threaded hole of the knuckle spindle pipe 5, and the brake base plate 22 is located between the bracket 8 and the flange of the knuckle spindle pipe 5.

In this embodiment, the ABS sensor 7 may be a linear wheel speed sensor, an annular wheel speed sensor, or a hall wheel speed sensor, and the shape and size of the sensing end of the ABS sensor 7 are consistent with the shape and size of the teeth of the ring gear 6, for example, both are rectangular, so that the sensing is more sensitive. The inner side wall of the gear ring 6 is in interference fit with the outer side wall of the inner end of the front hub 4, and the gear ring 6 and the outer periphery of the inner end of the front hub 4 can be arranged by an oil press during assembly. Wherein, a hub reduction gear 3 is arranged in the front hub 4. Of course, in other embodiments, the hub reduction gear 3 may not be mounted in the front hub 4.

The working principle of the embodiment is as follows: when the ring gear 6 rotates together with the front hub 4, the ABS sensor 7 senses a signal. When braking, an anti-lock brake system (ABS) can rapidly judge the locking state of the front wheel according to a speed signal transmitted by an ABS sensor 7 of the front wheel, a normally open input electromagnetic valve on the front wheel which starts to lock is closed, the braking force is kept unchanged, if the front wheel continues to lock, a normally closed output electromagnetic valve is opened, the braking pressure on the front wheel rapidly moves downwards due to the fact that a pipeline which is directly communicated with a braking fluid storage tank appears, and the front wheel is prevented from being completely locked due to overlarge braking force. When the braking state is always in the optimal point (the slip ratio S is 20%), the braking effect is optimal, and the driving is safest.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and any person skilled in the art should not depart from the technical solution of the present invention, and any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention should fall within the scope of the present invention.

Claims

1. A front steering drive axle drum brake anti-lock braking system is characterized in that: including ring gear and ABS sensor, wheel hub's the inner periphery in the front is established to the fixed cover of ring gear, ABS sensor fixed mounting just dodges and opens the stopper hoof piece on the support, the support passes through the flange screw hole department of bolt fastening lock at the knuckle central siphon, the response end perpendicular to of ABS sensor the tooth addendum face that corresponds of ring gear.

2. The front steering axle drum brake anti-lock brake system according to claim 1, wherein: the support is L shape steel sheet, vertical through-hole has been seted up on the diaphragm of L shape steel sheet, ABS sensor is fixed to be worn to establish in the vertical through-hole, horizontal through-hole has been seted up on the riser of L shape steel sheet, the bolt passes in proper order horizontal through-hole with the flange screw hole.

3. The front steering axle drum brake anti-lock brake system according to claim 1, wherein: the bolt passes through the support, the brake bottom plate and the steering knuckle axle tube in sequence.

4. The front steering axle drum brake anti-lock brake system according to claim 1, wherein: the ABS sensor is a linear wheel speed sensor, an annular wheel speed sensor or a Hall wheel speed sensor.

5. The front steering axle drum brake anti-lock brake system according to claim 1, wherein: the shape and the size of the sensing end of the ABS sensor are consistent with the shape and the size of the teeth of the gear ring.

6. The front steering axle drum brake anti-lock brake system according to claim 1, wherein: and the inner side wall of the gear ring is in interference fit with the outer side wall of the inner end of the front hub.

7. The front steering axle drum brake anti-lock brake system according to claim 1, wherein: and a hub reduction gear is arranged in the front hub.