CN220262752U

CN220262752U - Parking braking device and system

Info

Publication number: CN220262752U
Application number: CN202321536152.4U
Authority: CN
Inventors: 李磊; 田敏; 吕小科
Original assignee: Suzhou Lvkon Transmission S&T Co Ltd
Current assignee: Suzhou Lvkon Transmission S&T Co Ltd
Priority date: 2023-06-15
Filing date: 2023-06-15
Publication date: 2023-12-29
Anticipated expiration: 2033-06-15

Abstract

The utility model relates to a parking brake device and a system, wherein the parking brake device comprises a driving module with a power output part; the pull rod is connected with the power output part, and the power output part drives the pull rod to carry out reciprocating stretching motion; the pull arm is rotationally connected with the pull rod; the brake comprises two friction plates connected together, wherein one friction plate is connected with the pull arm; the brake disc is arranged between the two friction plates; one end of the tension spring is connected with the pull arm, and the other end of the tension spring is fixed on the second mounting plate; when braking, the pull rod stretches out, the pull arm moves anticlockwise, the tension spring is in a one-time stretching state, and the friction plate clamps the brake disc; when the bicycle is driven, the pull rod is contracted, the tension spring is in a secondary stretching state, the pull arm moves clockwise, the friction plate releases the brake disc, and the braking state is released. The utility model cancels the connection of the flexible shaft and the inhaul cable, and has simple and stable structure.

Description

Parking braking device and system

Technical Field

The utility model relates to the technical field of disc type parking brake systems, in particular to a parking brake device and a parking brake system.

Background

Parking brake means, which refers to the way in which an automobile is parked on a road or on a slope in order to reduce the risk of sliding of the vehicle, also covers means which are applied to the automobile during start-up in the ramp position to prevent the vehicle from backing up.

At present, as shown in fig. 1, a widely used parking mode is a parking mode in which a parking brake cable is applied and a parking operation of a hand brake lever is transmitted to a brake. The method comprises the following steps: when the parking brake is used, the parking brake handle is pulled up to open the brake shoes, the brake drum is locked, namely the brake transmission shaft is braked, and the wheels cannot rotate, so that the automobile can be reliably parked. The locking pawl is locked when the parking brake handle is pulled, so that the parking brake is prevented from loosening.

When the vehicle is required to travel, the parking control handle is pulled backwards, so that the positive pressure of the locking pawl and the sector is eliminated, then the handle is pressed down to release the locking of the pawl, the parking control handle is pushed forwards to enable the cam to rotate, the brake shoe returns under the action of the return spring, and the brake is released, so that the vehicle can start to travel.

However, the parking brake device has a problem that the stay cable is easily deformed by being squeezed or pulled by an external force, and the stability of braking is reduced.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model discloses a parking brake device and a parking brake system.

The technical scheme adopted by the utility model is as follows:

a parking brake apparatus comprising:

the driving module is provided with a power output part;

the pull rod is connected with the power output part, and the power output part drives the pull rod to carry out reciprocating stretching motion;

the pull arm is connected with the pull rod;

the brake comprises two friction plates connected together, wherein one friction plate is connected with the pull arm;

the brake disc is arranged between the two friction plates;

one end of the tension spring is connected with the pull arm, and the other end of the tension spring is fixed on the second mounting plate;

during braking, the pull rod stretches out, the pull arm moves anticlockwise, the tension spring is in a one-time stretching state, and the friction plate clamps the brake disc; during running, the pull rod is contracted, the tension spring is in a secondary stretching state, the pull arm moves clockwise, and the friction plate releases the brake disc to release the braking state.

In some embodiments, the drive module includes a motor and a decelerator, an output of the motor being connected to an input of the decelerator, an output of the decelerator forming a power output.

In some embodiments, a gear is arranged at the output end of the speed reducer, a rack is arranged at one end of the pull rod, and the gear and the rack are meshed for transmission; the other end of the pull rod is provided with a U-shaped block, and the U-shaped block is connected with the pull arm through a bolt.

In some embodiments, the mounting portion of the drive module is secured to the first mounting plate.

In some embodiments, the pull arm includes a first connection portion, a transition portion, and a second connection portion that are sequentially connected, where the transition portion is formed by bending, and a height difference is formed between a horizontal plane where a first surface of the first connection portion is located and a horizontal plane where a first surface of the second connection portion is located; the first connecting part is provided with a connecting hole for the end part of the tension spring to pass through, the second connecting part is provided with a transmission shaft, and the end part of the transmission shaft is connected with a friction plate.

In some embodiments, the first connection portion, the transition portion, and the second connection portion are integrally formed.

In some embodiments, the second mounting plate includes a main plate and an auxiliary plate bent and formed along a thickness direction of the main plate, and the auxiliary plate is provided with a connection hole for passing an end of the tension spring.

In some embodiments, the brake disc is a metal disc that operates on both end faces.

In some embodiments, the brake disc is provided with a plurality of through holes, and circle centers of the through holes are connected to form a ring shape.

A parking brake system, comprising:

a gearbox housing;

the parking brake apparatus as described above is fixed to the transmission case.

Compared with the prior art, the technical scheme of the utility model has the following advantages:

1. the parking brake device can be applied to a mechanical parking brake to replace the existing flexible shaft inhaul cable, is not easy to deform and solves the problem of poor braking stability.

2. According to the parking brake device, the first mounting plate and the second mounting plate are fixed on the gearbox shell through the plurality of supporting points, so that the arrangement and the installation are simple, and the manufacturing cost is reduced.

3. The parking brake device is assembled on the loader, so that the control of the whole vehicle under low pressure is more flexible and convenient, and the energy consumption is low.

Drawings

In order that the utility model may be more readily understood, a more particular description of the utility model will be rendered by reference to specific embodiments thereof that are illustrated in the appended drawings.

Fig. 1 is a schematic view of a parking brake apparatus according to the present utility model.

Fig. 2 is a schematic view of the structure of the brake disc of fig. 1.

Fig. 3 is a schematic view of a parking brake system according to the present utility model.

Description of the specification reference numerals: 1. a motor; 2. a speed reducer; 3. a first mounting plate; 4. a pull rod; 5. pulling an arm; 6. a tension spring; 7. a second mounting plate; 8. a brake; 801. a friction plate; 802. a transmission shaft; 9. a brake disc; 10. a gearbox housing.

Detailed Description

The present utility model will be further described with reference to the accompanying drawings and specific examples, which are not intended to be limiting, so that those skilled in the art will better understand the utility model and practice it.

The foregoing and other features, aspects and advantages of the present utility model will become more apparent from the following detailed description of the embodiments, read in conjunction with the accompanying drawings. The directional terms mentioned in the following embodiments are, for example: upper, lower, left, right, front or rear, etc., are merely references to the directions of the drawings. Thus, directional terminology is used for the purpose of illustration and is not intended to be limiting of the utility model, and furthermore, like reference numerals refer to like elements throughout the embodiments.

Example 1:

referring to fig. 1 and 2, a parking brake apparatus includes a driving module, a lever 4, a lever arm 5, a brake 8, a brake disc 9, and a tension spring 6.

Wherein, the installation part of the driving module is fixed on the first installation plate 3, and the driving module is provided with a power output part; specifically, the driving module comprises a motor 1 and a speed reducer 2, wherein the output end of the motor 1 is connected with the input end of the speed reducer 2, and the output end of the speed reducer 2 forms a power output part.

Further, in order to drive the pull rod 4 to reciprocate along the length direction of the pull rod, it can be understood that the pull rod 4 stretches and contracts, the speed reducer 2 is a commercially available worm and gear speed reducer, the structure and working principle of the speed reducer are the prior art, and in a simple way, the basic structure of the speed reducer 2 mainly comprises a worm and gear, a shaft, a bearing, a box body and accessories thereof. The box body is a base of all accessories in the worm gear reducer, and is an important accessory for supporting and fixing shafting components, ensuring the correct relative position of transmission accessories and supporting loads acting on the reducer 2. The worm gear is mainly used for transmitting the motion and power between the two staggered shafts, and the bearing and the shafts are mainly used for transmitting the power, running and improving the efficiency.

One end of the shaft of the speed reducer 2 is provided with a gear, one end of the pull rod 4 is provided with a rack, and the gear and the rack are meshed for transmission. The motor 1 can be a 24V motor, the speed reducer 2 provides a larger transmission ratio, the torque is amplified, the matched 24V motor 1, and the matching of the gear and the rack converts the rotary motion into the linear motion, so that the pull rod 4 obtains larger pulling force.

The other end of the pull rod 4 is provided with a U-shaped block which is connected with the pull arm 5 through bolts. Specifically, the U-shaped block comprises a web and two flanges, wherein the web is fixed at the end part of the pull rod 4, the two flanges are respectively arranged at two sides of the web, the two flanges are symmetrically arranged about the central axis of the web, at least one bolt hole is formed in the two flanges, correspondingly, at least one bolt hole is formed in the pull arm 5, and the bolts sequentially penetrate through the bolt holes of the flanges and the bolt holes of the pull arm 5 and are screwed down, so that the U-shaped block is connected with the pull arm 5 through bolts.

The pull arm 5 comprises a first connecting part, a transition part and a second connecting part which are sequentially connected, wherein the transition part is formed by bending, and a height difference is formed between the horizontal plane of the first surface of the first connecting part and the horizontal plane of the first surface of the second connecting part so as to reserve the installation space of the brake 8. The first connecting part is provided with a connecting hole for the end part of the tension spring 6 to pass through, the second connecting part is provided with a transmission shaft 802, and the end part of the transmission shaft 802 is connected with a friction plate 801. Further, the first connecting portion is provided with a connecting hole for the end of the tension spring 6 to pass through.

Preferably, the first connecting portion, the transition portion and the second connecting portion are integrally formed, compared with the first connecting portion, the transition portion and the second connecting portion which are integrally formed, the integrally formed forming mode reduces welding points or connecting points between the components, meanwhile reduces manufacturing time of the pull arm 5, and improves stability of the pull arm 5.

The brake 8 comprises two friction plates 801 connected together, wherein one friction plate 801 is connected with the pull arm 5; specifically, the second connecting portion is provided with a transmission shaft 802, and an end portion of the transmission shaft 802 is connected to one friction plate 801.

The brake disc 9 is arranged between the two friction plates 801; specifically, the brake disc 9 is a metal disc working with two end faces; the brake disc 9 is provided with a plurality of through holes, and the circle centers of the through holes are connected to form a ring shape. The through holes perform a heat dissipation function to a certain extent.

One end of the tension spring 6 is connected with the pull arm 5, and the other end of the tension spring is fixed on the second mounting plate 7; specifically, the second mounting plate 7 includes a main plate and an auxiliary plate bent and formed in the thickness direction of the main plate, and the auxiliary plate is provided with a connection hole for the end portion of the tension spring 6 to pass through.

The working principle of this embodiment is as follows:

during braking, the pull rod 4 stretches out, the pull arm 5 moves anticlockwise, the tension spring 6 is in a one-time stretching state, and the friction plate 801 clamps the brake disc 9;

when the bicycle is driven, the pull rod 4 is contracted, the tension spring 6 is in a secondary stretching state, the pull arm 5 moves clockwise, the friction plate 801 releases the brake disc 9, and the braking state is released.

Example 2:

as shown in fig. 3, a parking brake system is applied to a 5-7 ton hybrid loader. The parking brake system comprises a gearbox housing 10 and a parking brake arrangement as provided in example 1. The vehicle brake is fixed to the transmission housing 10. Wherein the first mounting plate 3 and the second mounting plate 7 are both fixed to the gearbox housing 10.

The working principle of this embodiment is as follows:

when the whole car is not started, the pull rod 4 stretches out, the tension spring 6 is in a one-time stretching state, the pull force of the tension spring 6 of the pull arm 5 rotates a certain angle, and the friction plate 801 of the brake 8 clamps the brake disc 9.

When the whole vehicle runs, the controller sends out instructions to control the output end of the motor 1 to input torque, the pull rod 4 is contracted, the pulling force of the pull rod 4 is larger than the elastic force of the tension spring 6, the pull arm 5 rotates by a certain angle under the pulling force of the pull rod 4, the brake 8 is restored to a non-braking state, the friction plate 801 releases the brake disc 9, and the tension spring 6 is stretched for the second time.

When the whole car stops running, the output end of the motor 1 is reversed, the pull rod 4 stretches out to the initial position, the tension spring 6 contracts to a one-time stretching state, the pull arm 5 rotates for a certain angle, and the friction plate 801 clamps the brake disc 9 to realize braking.

It should be noted that the main design point of the present utility model is to improve the structure of the parking brake device, and other structures of the hybrid loader, such as the electrical connection part and the mechanical structure part of the hybrid loader, will not be described in detail.

In the description of the embodiments of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "connected," and "connected" should be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations and modifications of the present utility model will be apparent to those of ordinary skill in the art in light of the foregoing description. It is not necessary here nor is it exhaustive of all embodiments. And obvious variations or modifications thereof are contemplated as falling within the scope of the present utility model.

Claims

1. A parking brake apparatus, comprising:

the driving module is provided with a power output part;

the pull rod (4) is connected with the power output part, and the power output part drives the pull rod (4) to perform reciprocating stretching motion;

a pull arm (5) connected with the pull rod (4);

a brake (8) comprising two friction plates (801) connected together, one of the friction plates (801) being connected to the pull arm (5);

a brake disc (9) arranged between the two friction plates (801);

one end of the tension spring (6) is connected with the pull arm (5), and the other end of the tension spring is fixed on the second mounting plate (7);

during braking, the pull rod (4) stretches out, the pull arm (5) moves anticlockwise, the tension spring (6) is in a one-time stretching state, and the friction plate (801) clamps the brake disc (9); during running, the pull rod (4) is contracted, the tension spring (6) is in a secondary stretching state, the pull arm (5) moves clockwise, the friction plate (801) releases the brake disc (9), and the braking state is released.

2. Parking brake arrangement according to claim 1, characterized in that the drive module comprises a motor (1) and a retarder (2), the output of the motor (1) being connected to the input of the retarder (2), the output of the retarder (2) forming a power take-off.

3. Parking brake device according to claim 2, characterized in that the output end of the reducer (2) is provided with a gear, one end of the pull rod (4) is provided with a rack, and the gear and the rack are in meshed transmission; the other end of the pull rod (4) is provided with a U-shaped block, and the U-shaped block is connected with the pull arm (5) through a bolt.

4. Parking brake device according to claim 2, characterized in that the mounting part of the drive module is fixed to the first mounting plate (3).

5. Parking brake device according to claim 1, characterized in that the pull arm (5) comprises a first connection part, a transition part and a second connection part which are connected in sequence, wherein the transition part is formed by bending, and a height difference is formed between a horizontal plane where the first surface of the first connection part is located and a horizontal plane where the first surface of the second connection part is located; the first connecting part is provided with a connecting hole for the end part of the tension spring (6) to pass through, the second connecting part is provided with a transmission shaft (802), and the end part of the transmission shaft (802) is connected with a friction plate (801).

6. A parking brake arrangement according to claim 5, wherein the first connection portion, the transition portion and the second connection portion are integrally formed.

7. Parking brake device according to claim 1, characterized in that the second mounting plate (7) comprises a main plate and a sub-plate bent in the thickness direction of the main plate, which sub-plate is provided with a connecting hole for the end portion of the tension spring (6) to pass through.

8. Parking brake arrangement according to claim 1, characterized in that the brake disc (9) is a metal disc operating on both end faces.

9. Parking brake device according to claim 1 or 8, characterized in that the brake disc (9) is provided with a plurality of through holes, the circle centers of which are connected to form a ring.

10. A parking brake system, comprising:

a gearbox housing (10);

parking brake arrangement according to any one of claims 1-9, fixed to the gearbox housing (10).