CN218325898U

CN218325898U - Wheel side speed reducer moves integrative stopper of parking

Info

Publication number: CN218325898U
Application number: CN202222539089.1U
Authority: CN
Inventors: 王吉雨; 曹作宇; 郝仁强; 赵冬; 宋国权; 王世格
Original assignee: Dalian Huarui Heavy Industry Group Co Ltd
Current assignee: Dalian Huarui Heavy Industry Group Co Ltd
Priority date: 2022-09-23
Filing date: 2022-09-23
Publication date: 2023-01-17
Anticipated expiration: 2032-09-23

Abstract

The utility model provides a wheel side speed reducer moves integrative stopper of parking has integrateed service brake and parking brake in the speed reducer inside, and has reduced the application of space through the design of public one set of friction disc, and two pistons overlap and arrange, have effectively reduced the size of stopper, are convenient for integrate in the speed reducer inside; compact structure, small size, convenient disassembly and high reliability, thereby fully utilizing the space of the input end of the speed reducer and effectively simplifying the structure of the whole vehicle.

Description

Wheel side speed reducer moves integrative stopper of parking

Technical Field

The utility model relates to a hub reduction gear stopper technical field particularly, especially relates to and uses on hub reduction gear, moves integrative stopper in staying.

Background

The wheel edge speed reducer is widely applied to various engineering vehicles and agricultural machinery, is arranged at a vehicle power output terminal, and transmits the input rotating speed and torque to wheels after speed reduction and torque increase so as to realize independent rotation of the wheels.

Most of the existing wheel-side speed reducers are only provided with a service brake or a parking brake, and although a few wheel-side speed reducers are simultaneously provided with the service brake and the parking brake, the existing wheel-side speed reducers have the defects of large size, complex structure, poor reliability and inconvenience in disassembly. In addition, due to the limitation of installation space, the whole vehicle is difficult to arrange a driving brake or a parking brake independently.

Disclosure of Invention

In view of the above-mentioned technical problems, a brake for a wheel hub reduction gear. The utility model discloses mainly utilize integrated inside the hub reduction gear, make full use of speed reducer input space makes it have characteristics such as compact structure, small in size, convenient to detach, reliability height to play the purpose of simplifying whole car structure.

The utility model discloses a technical means as follows:

a wheel edge speed reducer traveling and parking integrated brake comprises a transition sleeve, a parking brake oil inlet, a limiting cylinder, a parking brake spring, a parking brake piston, a spring baffle, a check ring, a spline sleeve, a friction plate baffle, an outer friction plate, an inner friction plate, a service brake spring, a service brake piston, a service brake oil inlet, an elastic check ring, an O-shaped sealing ring, a star-shaped sealing ring and a flat check ring.

The fixed seat is fixed on a vehicle frame, a transition sleeve is combined on the fixed seat through a screw, an O-shaped sealing ring is arranged between the transition sleeve and the fixed seat for sealing, a hydraulic motor is arranged on the left side of the transition sleeve, the right side of the hydraulic motor is connected with a spline sleeve through a spline, a spline on the right side of the spline sleeve is used for being connected with a gear piece of a speed reducer, an outer spline is processed on the outer ring of the spline sleeve, an inner friction plate is arranged on the spline sleeve through a spline, an inner spline is processed on the inner ring of the fixed seat, an outer friction plate is arranged on the fixed seat through a spline, the inner friction plate and the outer friction plate are installed in a staggered mode, the number of the outer friction plate is 1 more than that of the inner friction plate, a friction plate baffle is installed on the right end face of the inner spline of the fixed seat in a clinging mode, and the right side of the friction plate baffle is limited through an elastic retainer ring installed inside the fixed seat; an inner hole of a fixed seat is used as a cylinder hole of a parking brake, a parking brake piston is installed at the position of the inner hole of the fixed seat, a parking brake oil inlet is processed on the fixed seat and is connected to an oil cavity between the parking brake piston and the cylinder hole of the fixed seat through a drill hole, a groove is processed on the outer ring of the parking brake piston, a star-shaped sealing ring and a flat check ring are installed in the groove for sealing, a plurality of limiting cylinders are installed between the parking brake piston and a transition sleeve, and a parking brake spring is installed in each limiting cylinder; the inner hole of the parking brake piston is used as a service brake cylinder hole, the service brake piston is installed at the inner hole of the parking brake piston, the inner hole step surface of the parking brake piston is limited on the left side of the service brake piston, a service brake oil inlet is processed on the fixing seat, a hole is drilled, meanwhile, the service brake piston is connected to an oil cavity between the service brake piston and the parking brake piston cylinder hole through a processing oil hole and an annular oil groove in the parking brake piston, a groove is processed in the outer ring of the service brake piston, a star-shaped sealing ring and a flat retainer ring are installed in the groove for sealing, a plurality of holes are processed on the right side of the service brake piston, the service brake spring is installed in the hole, the right side of the service brake spring abuts against a spring baffle, the spring baffle is installed inside the parking brake piston, and the right side of the spring baffle is limited through a retainer ring installed inside the parking brake piston.

The parking brake spring and the service brake spring are in a compressed state under each braking state.

When the brake is in a parking braking state, no hydraulic oil is input into a parking braking oil inlet and a service braking oil inlet, the parking braking piston is pushed to the right side by a parking braking spring together with a service braking piston, a service braking spring, a spring baffle and a retainer ring, the right end face of the service braking piston is contacted with the left end face of the leftmost outer friction plate, each outer friction plate and each inner friction plate are respectively abutted against and contacted, and the right end face of the rightmost outer friction plate is abutted against the friction plate baffle; under the pressure of the parking brake spring, static friction force is generated between the outer friction plate and the inner friction plate, and the purpose of parking brake is achieved.

When the brake is in a non-braking state, namely a normal driving state, no hydraulic oil is input into the service brake oil inlet, and hydraulic oil is introduced into the parking brake oil inlet to provide oil pressure, so that the parking brake piston overcomes the elastic force of the parking brake spring and moves leftwards together with the service brake piston, the service brake spring, the spring baffle and the check ring until the left side of the parking brake piston is contacted with the limiting cylinder, and the service brake piston abuts against the stepped surface of the inner hole of the parking brake piston under the elastic force of the service brake spring; at the moment, a gap exists between the service braking spring and the outer friction plate and between the service braking spring and the inner friction plate, no friction force exists between the outer friction plate and the inner friction plate, and the inner friction plate and the spline sleeve can freely rotate relative to the outer friction plate.

When the brake is in a service braking state, the inner friction plate and the spline sleeve rotate relative to the outer friction plate, at the moment, hydraulic oil is introduced into a parking braking oil inlet and oil pressure is provided, the parking braking piston overcomes the elasticity of the parking braking spring and moves leftwards together with the service braking piston, the service braking spring, the spring baffle and the check ring, and the left side of the parking braking piston is in contact with the limiting cylinder; hydraulic oil is introduced into the m service brake oil inlets and oil pressure is provided, so that the service brake piston moves rightwards relative to the parking brake piston by overcoming the elasticity of a service brake spring until the right end face of the service brake piston is contacted with the left end face of the leftmost outer friction plate, the outer friction plates, the inner friction plates and the friction plate baffle plates are contacted, and the dynamic friction force between the outer friction plates and the inner friction plates is correspondingly increased and reduced along with the increase and reduction of the service brake hydraulic oil pressure, thereby achieving the purpose of service braking.

When the brake is in a service braking state, the inner friction plate and the spline sleeve rotate relative to the outer friction plate, at the moment, hydraulic oil is introduced into a parking braking oil inlet and oil pressure is provided, the parking braking piston overcomes the elasticity of the parking braking spring and moves leftwards together with the service braking piston, the service braking spring, the spring baffle and the check ring, and the left side of the parking braking piston is in contact with the limiting cylinder; hydraulic oil is introduced into the m service brake oil inlets and oil pressure is provided, so that the service brake piston moves rightwards relative to the parking brake piston by overcoming the elastic force of a service brake spring until the right end face of the service brake piston is contacted with the left end face of the leftmost outer friction plate, the outer friction plates, the inner friction plates and the friction plate baffle plates are contacted, and along with the increase and decrease of the service brake hydraulic oil pressure, the dynamic friction force between the outer friction plates and the inner friction plates is correspondingly increased and decreased, and the service brake purpose is achieved.

Compared with the prior art, the utility model has the advantages of it is following:

1. the application integrates a service brake and a parking brake in the speed reducer; whereas the prior art has only service brakes or only parking brakes.

2. In the application, the driving brake and the parking brake share one set of friction plate, so that the space is saved, and the structure is simplified; in the prior art, two sets of friction plates are used for driving and parking respectively.

3. According to the brake, parts of easily-damaged parts of the brake can be detached from the input end of the speed reducer, so that the brake is convenient to detach, maintain and replace spare parts; in the prior art, the brake can be completely disassembled only after a gear piece on the right side of the speed reducer is disassembled.

4. The brake has a compact structure, the two pistons are arranged in an overlapping manner, the size of the brake is effectively reduced, and the brake is convenient to integrate in the speed reducer; the prior art is too large in size and cannot be arranged inside the speed reducer.

5. The service brake spring is only used for resetting the service brake piston, and the elastic force of the parking brake spring cannot be offset; in the prior art, the service brake spring can counteract the elastic force of the parking brake spring in the parking state, and the static braking torque can be influenced.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.

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

Fig. 2 is a schematic structural view of the parking brake of the present invention.

Fig. 3 is a schematic structural diagram of the present invention in a non-braking state.

Fig. 4 is a schematic structural diagram of the present invention in a service braking state.

In the figure: the brake system comprises a transition sleeve 1, a parking brake oil inlet 2, a limiting cylinder 3, a parking brake spring 4, a parking brake piston 5, a spring baffle 6, a retainer ring 7, a fixing seat 8, a spline sleeve 9, a friction plate baffle 10, an outer friction plate 11, an inner friction plate 12, a service brake spring 13, a service brake piston 14, a service brake oil inlet 15 and a hydraulic motor 16.

Detailed Description

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

To make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

Unless specifically stated otherwise, the relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. Any specific values in all examples shown and discussed herein are to be construed as exemplary only and not as limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

In the description of the present invention, it should be understood that the directions or positional relationships indicated by the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom", etc., are usually based on the directions or positional relationships shown in the drawings, and are only for convenience of description and simplification of the description, and in the case of not making a contrary explanation, these directional terms do not indicate and imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore, should not be interpreted as limiting the scope of the present invention: the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

For ease of description, spatially relative terms such as "over … …", "over … …", "over … …", "over", etc. may be used herein to describe the spatial positional relationship of one device or feature to another device or feature as shown in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and if not stated otherwise, the terms have no special meaning, and therefore, the scope of the present invention should not be construed as being limited.

As shown in fig. 1, a wheel side speed reducer traveling and parking integrated brake comprises a transition sleeve 1, a parking brake oil inlet 2, a limiting cylinder 3, a parking brake spring 4, a parking brake piston 5, a spring baffle 6, a retainer ring 7, a spline sleeve 9, a friction plate baffle 10, an outer friction plate 11, an inner friction plate 12, a service brake spring 13, a service brake piston 14, a service brake oil inlet 15, an elastic retainer ring, an O-shaped seal ring, a star-shaped seal ring and a flat retainer ring.

The fixed seat 8 is fixed on a vehicle frame, the transition sleeve 1 is combined on the fixed seat 8 through a screw, an O-shaped sealing ring is arranged between the transition sleeve 1 and the fixed seat 8 for sealing, the hydraulic motor 16 is arranged on the left side of the transition sleeve 1, the right side of the hydraulic motor 16 is connected with the spline sleeve 9 through a spline, the spline on the right side of the spline sleeve 9 is used for being connected with a gear piece of a speed reducer, an external spline is processed on the outer ring of the spline sleeve 9, the inner friction plate 12 is arranged on the spline sleeve 9 through the spline, an internal spline is processed on the inner ring of the fixed seat 8, the outer friction plate 11 is arranged on the fixed seat 8 through the spline, the inner friction plate 12 and the outer friction plate 11 are installed in a staggered mode, the number of the outer friction plate 11 is 1 more than that of the inner friction plate 12, the right end face of the internal spline of the fixed seat 8 is tightly attached with the friction plate baffle plate 10, and the right side of the friction plate baffle 10 is limited through an elastic retainer ring arranged inside the fixed seat 8; an inner hole of a fixed seat 8 is used as a parking brake cylinder hole, a parking brake piston 5 is installed at the position of the inner hole of the fixed seat 8, a parking brake oil inlet 2 is machined in the fixed seat 8 and is connected to an oil cavity between the parking brake piston 5 and the fixed seat 8 cylinder hole through a drill hole, a groove is machined in the outer ring of the parking brake piston 5, a star-shaped sealing ring and a flat check ring are installed in the groove for sealing, a plurality of limiting cylinders 3 are installed between the parking brake piston 5 and a transition sleeve 1, and a parking brake spring 4 is installed in each limiting cylinder 3; the inner hole of the parking brake piston 5 is used as a service brake cylinder hole, a service brake piston 14 is installed at the inner hole of the parking brake piston 5, the inner hole step face of the parking brake piston 5 is limited on the left side of the service brake piston 14, a service brake oil inlet 15 is machined on a fixing seat 8 and drilled, meanwhile, the service brake oil inlet and the drilled hole are connected to an oil cavity between the service brake piston 14 and the parking brake piston 5 cylinder hole through a machining oil hole and an annular oil groove on the parking brake piston 5, a groove is machined in the outer ring of the service brake piston 14, a star-shaped sealing ring and a flat check ring are installed in the groove and used for sealing, a plurality of holes are machined in the right side of the service brake piston 14, a service brake spring 13 is installed in the hole, the right side of the service brake spring baffle 13 abuts against a spring baffle 6, the spring baffle 6 is installed inside the parking brake piston 5, and the right side of the spring baffle 6 is limited through a check ring 7 installed inside the parking brake piston 5. The parking brake spring 4 and the service brake spring 13 are in a compressed state in each braking state.

As shown in fig. 2, when the brake is in a parking brake state, no hydraulic oil is input into a parking brake oil inlet 2 and a service brake oil inlet 15, a parking brake spring 4 pushes a parking brake piston 5 together with a service brake piston 14, a service brake spring 13, a spring baffle 6 and a retainer ring 7 to the right, the right end surface of the service brake piston 14 is in contact with the left end surface of the leftmost outer friction plate 11, each outer friction plate 11 and each inner friction plate 12 are in close contact respectively, and the right end surface of the rightmost outer friction plate 11 is in close contact with the friction plate baffle 10; under the pressure of the parking brake spring 4, static friction force is generated between the outer friction plate 11 and the inner friction plate 12, and the purpose of parking brake is achieved.

As shown in fig. 3, when the brake is in a non-braking state, i.e. a normal driving state, the service brake oil inlet 15 has no hydraulic oil input, and the parking brake oil inlet 2 is filled with hydraulic oil and provides oil pressure, so that the parking brake piston 5 overcomes the elastic force of the parking brake spring 4 and is connected with the service brake piston 14, the service brake spring 13, the spring baffle 6 and the check ring 7 to move leftward until the left side of the parking brake piston 5 contacts the limiting cylinder 3, and the service brake piston 14 abuts against the inner hole stepped surface of the parking brake piston 5 under the elastic force of the service brake spring 13; at this time, a gap exists between the service brake spring 13 and the outer friction plate 11 and the inner friction plate 12, no friction force exists between the outer friction plate 11 and the inner friction plate 12, and the inner friction plate 12 and the spline housing 9 can rotate freely relative to the outer friction plate 11.

As shown in fig. 4, when the brake is in a service braking state, the inner friction plate 12 and the spline housing 9 rotate relative to the outer friction plate 11, at this time, hydraulic oil is introduced into the parking brake oil inlet 2 and oil pressure is provided, the parking brake piston 5 overcomes the elastic force of the parking brake spring 4 and drives the service brake piston 14, the service brake spring 13, the spring baffle 6 and the retainer ring 7 to move leftward, and the left side of the parking brake piston 5 is in contact with the limiting cylinder 3; hydraulic oil is introduced into a service brake oil inlet 15 and oil pressure is provided, so that a service brake piston 14 moves rightwards relative to a parking brake piston 5 by overcoming the elastic force of a service brake spring 13 until the right end face of the service brake piston 14 is contacted with the left end face of the leftmost outer friction plate 11, all the outer friction plates 11, the inner friction plates 12 and the friction plate baffle plates 10 are contacted, and along with the increase and decrease of the service brake hydraulic oil pressure, the dynamic friction force between the outer friction plates 11 and the inner friction plates 12 is correspondingly increased and decreased, and the service brake purpose is further achieved.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims

1. The utility model provides a wheel reduction machine moves integrative stopper of staying which characterized in that includes: the parking brake device comprises a transition sleeve (1), a parking brake oil inlet (2), a limiting cylinder (3), a parking brake spring (4), a parking brake piston (5), a spring baffle (6), a check ring (7), a spline sleeve (9), a friction plate baffle (10), an outer friction plate (11), an inner friction plate (12), a service brake spring (13), a service brake piston (14), a service brake oil inlet (15), an elastic check ring, an O-shaped sealing ring, a star-shaped sealing ring and a check ring;

the fixing seat (8) is fixed on a vehicle frame, the transition sleeve (1) is fixed on the fixing seat (8), an O-shaped sealing ring is installed between the transition sleeve (1) and the fixing seat (8) for sealing, a hydraulic motor (16) is installed on the left side of the transition sleeve (1), the right side of the hydraulic motor (16) is connected with the spline sleeve (9) through a spline, a spline on the right side of the spline sleeve (9) is used for being connected with a speed reducer gear piece, an outer spline is machined on the outer ring of the spline sleeve (9), inner friction plates (12) are installed on the spline sleeve (9) through the spline, an inner spline is machined on the inner ring of the fixing seat (8), the outer friction plates (11) are installed on the fixing seat (8) through the spline, the inner friction plates (12) and the outer friction plates (11) are installed in a staggered mode, the number of the outer friction plates (11) is 1 more than that of the inner friction plates (12), a baffle plate (10) is installed on the right end face of the inner spline of the fixing seat (8), and the right end face of the baffle plate (10) is tightly attached to an elastic limiting retaining ring installed inside the fixing seat (8); an inner hole of the fixed seat (8) is used as a parking brake cylinder hole, a parking brake piston (5) is installed at the inner hole of the fixed seat (8), a parking brake oil inlet (2) is machined in the fixed seat (8) and is connected to an oil cavity between the parking brake piston (5) and the fixed seat (8) cylinder hole through a drill hole, a groove is machined in the outer ring of the parking brake piston (5), and a star-shaped sealing ring and a flat check ring are installed in the groove for sealing; an elastic piece is arranged between the parking brake piston (5) and the transition sleeve (1);

the inner hole of the parking brake piston (5) is used as a service brake cylinder hole, a service brake piston (14) is installed at the inner hole of the parking brake piston (5), the inner hole step surface of the parking brake piston (5) limits the left side of the service brake piston (14), a service brake oil inlet (15) is machined on a fixing seat (8) and drilled simultaneously through a machining oil hole and an annular oil groove in the parking brake piston (5) to be connected to an oil cavity between the service brake piston (14) and the parking brake piston (5) cylinder hole, a groove is machined in the outer ring of the service brake piston (14), a star-shaped sealing ring and a flat check ring are installed in the groove for sealing, a plurality of holes are machined in the right side of the service brake piston (14), a service brake spring (13) is installed in the hole, the right side of the service brake spring (13) abuts against a spring baffle (6), the spring baffle (6) is installed in the parking brake piston (5), and the right side of the spring baffle (6) is limited through the check ring (7) installed in the parking brake piston (5).

2. The wheel hub reduction gear parking integrated brake of claim 1,

the elastic member includes: a plurality of spacing section of thick bamboo (3) and install parking braking spring (4) in spacing section of thick bamboo (3).

3. The wheel hub reduction gear parking integrated brake of claim 2,

the parking brake spring (4) and the service brake spring (13) are in a compressed state in each braking state.