Bus low-floor drive axle ventilation device and drive axle assembly

Abstract

The utility model provides a bus low floor drive axle ventilation device and a drive axle assembly, the ventilation device comprises a protection box, the protection box is provided with a first buckle type joint and a second buckle type joint, the first buckle type joint is communicated with a drive axle through a first pipeline, and the second buckle type joint is communicated with the atmosphere through a second pipeline. The vent plug is arranged in the protection box, and the drive axle communicates with the atmosphere through the first pipeline, the protection box and the second pipeline. The protection box is fixedly connected to the drive axle through the first support. According to the ventilation device, the ventilation plug is arranged in the protection box, muddy water and dust can be effectively prevented from entering and covering the ventilation plug, and the problems that the ventilation function is invalid due to muddy water covering after the ventilation plug is used for a long time, then sealing of the drive axle is invalid, and oil leakage and oil leakage occur are solved. In addition, the situation that the vent plug is exposed outside and is collided by an external object to be damaged can be avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to drive axle ventilation technology field, concretely is a bus low floor drive axle ventilation device and drive axle assembly. BACKGROUND

[0002] In the real scene, because the position of the bus low floor drive axle breather plug is relatively low from the ground, it is easy to get mud in rainy and snowy weather. After the vehicle is used for a long time, the soil may accumulate in the breather valve, causing the spring to fail to work normally, making the ventilation function fail, and thus causing the drive axle to seep and leak oil, eventually causing the gears, bearings and other parts to be insufficiently lubricated, reducing the service life.

[0003] Usually, the breather plug is exposed to the outside, but this increases the possibility of water entering. Moreover, friction, collision and other situations may occur, causing damage to the breather plug, making the ventilation function fail, and thus causing the drive axle to seep and leak oil, eventually causing the gears, bearings and other parts to be insufficiently lubricated, reducing the service life. UTILITY MODEL CONTENTS

[0004] The utility model aims at overcoming the defects of the prior art, providing a bus low floor drive axle ventilation device and drive axle assembly to solve the problem that the breather plug is exposed to the outside, the breather plug is easy to get water and accumulate dust, and the ventilation function fails and the breather plug is damaged.

[0005] The utility model provides a bus low floor drive axle ventilation device, which comprises a protection box, the protection box has a first snap type joint and a second snap type joint, the first snap type joint is connected to the drive axle through a first pipeline, and the second snap type joint is connected to the atmosphere through a second pipeline; a breather plug is arranged in the protection box, and the drive axle is connected to the atmosphere through the first pipeline, the protection box and the second pipeline; and the protection box is fixedly connected to the drive axle through a first support.

[0006] Further, the protection box comprises a first protection shell and a second protection shell fixedly connected to the first protection shell. One end of the first protection shell has a base, the first snap type joint is arranged on the base and communicates with the inside of the first protection shell, the base is fixedly connected to the first support through a fixing piece, and the second protection shell is sleeved outside the first protection shell from the other end of the first protection shell, and the second snap type joint is arranged on the side wall of the second protection shell and communicates with the inside of the second protection shell.

[0007] Further, the base of the first protective shell is provided with a clamping structure on both sides, and the second protective shell is provided with a clamping block structure corresponding to the clamping structure.

[0008] Further, the base is provided with a sealing ring close to one side of the second protective shell.

[0009] Further, one end of the first pipeline is fixedly connected with the first buckle connector through a fastener, and the other end of the first pipeline is connected with a connector; the connector is fixed on the drive axle and communicates with the inside of the drive axle; a bellows is sleeved on the first pipeline.

[0010] Further, one end of the second pipeline is fixedly connected with the second buckle connector through a fastener; the other end of the second pipeline is sleeved with a pipe clamp and fixedly connected with a second support through a fixing member, and the second support is fixedly connected with the drive axle.

[0011] The utility model provides a drive axle assembly, the drive axle assembly includes: drive axle housing, the drive axle housing is fixedly provided with ventilation device, ventilation device will drive axle housing inside and atmosphere intercommunication, drive axle housing left and right two ends are connected with wheel edge reduction gearbox respectively, wheel edge reduction gearbox both sides outer wall is fixedly provided with cantilever respectively, cantilever end is used for connecting automobile chassis, wheel edge reduction gearbox output end drive connection has car wheel half shaft, car wheel half shaft's other end fixed connection car wheel hub.

[0012] Further, the drive axle housing is provided with a push rod.

[0013] Further, one end of the cantilever connected with the automobile chassis is provided with an air bag and a shock absorber, wherein the air bag supports the automobile chassis, is used for supporting the weight of the vehicle body and adjusting the height of the vehicle body; the shock absorber is connected with the automobile chassis, is used for reducing the vibration when the automobile walks.

[0014] Further, the drive axle housing is further provided with a brake mechanism on both ends.

[0015] The utility model provides a kind of bus low floor drive axle ventilation device and drive axle assembly at least have following benefits: the protection device by setting breathable plug in protective shell inside, it can effectively prevent mud and dust into covering on breathable plug, solve the breathable plug long time use because of mud covering leads to ventilation function failure, further lead to drive axle sealing failure, appear seepage, oil leakage situation.And by setting support, raise the position of breathable plug, further reduce the problem that mud covers on its surface in vehicle operation, further solve the inside such as gear, bearing and other components of drive axle lubrication poor appear early failure, reduce maintenance cost, prolong the service life of drive axle.In addition, the protection device can avoid that breathable plug is exposed to the outside, is collided by external object and further causes damage situation.And protective box passes through using buckle type structure, so that installation is more simple.

[0016] It should be appreciated that the foregoing general description and the following detailed description are only exemplary and explanatory, and cannot limit the range of the utility model claimed. BRIEF DESCRIPTION OF DRAWINGS

[0017] The following drawings are part of the specification of the utility model, which illustrates the example embodiment of the utility model, and the accompanying drawings and the description of the specification are used to illustrate the principle of the utility model.

[0018] Figure 1 It is the explosion map of the utility model to provide a kind of bus low floor drive axle ventilation device.

[0019] Figure 2 It is the assembly structure diagram of the utility model to provide a kind of bus low floor drive axle ventilation device.

[0020] Figure 3 It is the front view of the utility model to provide a kind of drive axle assembly.

[0021] Figure 4 It is the plan view of the utility model to provide a kind of drive axle assembly.

[0022] BRIEF DESCRIPTION OF DRAWINGS

[0023] 1-ventilation device, 2-drive axle, 3-wheel side reduction gearbox, 4-cantilever, 5-wheel half shaft, 6-thrust rod, 7-air bag, 8-shock absorber, 9-braking mechanism;

[0024] 11-protective box, 12-first buckle type joint, 13-second buckle type joint, 14-breathable plug, 15-first support, 16-first pipeline, 17-second pipeline, 18-joint, 19-corrugated pipe, 20-pipe clamp, 21-second support;

[0025] 111 - first protective housing, 112 - second protective housing, 113 - base, 114 - clamping structure, 115 - clamping block structure. DETAILED DESCRIPTION

[0026] The detailed description of the various exemplary embodiments of the present application is not to be considered as limiting the application to what is described herein, but rather what is described herein is to be considered as merely exemplary of the application, with the scope of the application being defined by the claims.

[0027] Many modifications and variations of the present application described in the specification are possible without departing from the scope or spirit of the application. Other implementations of the application will be apparent to those skilled in the art from consideration of the specification and practice of the application disclosed herein. The specification and examples given are exemplary only.

[0028] The utility model provides a kind of bus low floor drive axle ventilation device, as shown in Figure 1 And 2 It is the structure diagram of the ventilation device. In the specific embodiment, the ventilation device includes: a protective box 11, the protective box 11 has a first snap joint 12 and a second snap joint 13, the first snap joint 12 is connected to the drive axle through a first pipeline 16, and the second snap joint 13 is connected to the atmosphere through a second pipeline. The vent plug 14 is arranged inside the protective box 11, and the drive axle is connected to the atmosphere through the first pipeline 16, the protective box 11 and the second pipeline 17.

[0029] The protective box 11 is fixedly connected to the drive axle by a first support 15.

[0030] In the specific embodiment of the utility model, the protective box 11 includes a first protective housing 111 and a second protective housing 112 fixedly connected to the first protective housing 111. Among them, the first protective housing 111 has a base 113 at one end, the first snap joint 12 is arranged on the base 113 and connected to the inside of the first protective housing 111, and the first snap joint 12 is coaxially arranged with the first protective housing 111.

[0031] The base 113 is fixedly connected to the first support 15 by a fixing member. Preferably, the fixing member is a nut and a gasket. The first snap joint 12 has a thread at the bottom, the gasket is sleeved on the bottom of the first snap joint 12, and the nut is connected with the thread on the first snap joint 12 to fix the first protective housing 111 on the first support 15.

[0032] The second protective housing 112 is sleeved outside the first protective housing 111 from the other end thereof, and the second snap joint 13 is arranged on the side wall of the second protective housing 112 and connected to the inside of the second protective housing 112.

[0033] Further, the first protective shell 111 is provided with a clamping structure 114 on both sides of the base 113, and the second protective shell 112 is provided with a clamping block structure 115 corresponding to the clamping structure 114 on the side wall, and the clamping block structure 115 is clamped with the clamping structure 114. During the sliding connection of the first protective shell 111 and the second protective shell 112, the clamping block structure 115 is slid into the clamping structure 114, and clamping is achieved, thereby realizing the fixed connection of the first protective shell 111 and the second protective shell 112.

[0034] In the specific embodiment of the utility model, the base 113 is provided with a sealing ring on one side close to the second protective shell 112, so as to seal the first protective shell 111 and the second protective shell 112 after fixed connection, thereby reducing the water and dust.

[0035] In the specific embodiment of the utility model, one end of the first pipeline 16 is fixedly connected with the first buckle type connector 12 through a fastener, and the other end of the first pipeline 16 is connected with the connector 18. The connection between the first pipeline 16 and the first buckle type connector 12 and the connector 18 is interference fit, and the connection is fastened through the fastener. Preferably, the fastener is a clamp.

[0036] The connector 18 is fixed on the drive axle and communicates with the inside of the drive axle. The axle housing of the drive axle is provided with a vent hole, and the connector 18 is connected with the vent hole through a thread and is fixed on the drive axle, so as to connect the first pipeline 16.

[0037] In addition, the first pipeline 16 is sleeved with a corrugated pipe 19, which is used for protecting the first pipeline 16 and avoiding the friction and damage of the first pipeline with the drive axle during the operation of the automobile, thereby prolonging the service life.

[0038] In the specific embodiment of the utility model, one end of the second pipeline 17 is fixedly connected with the second buckle type connector 13 through a fastener. The second pipeline 17 and the second buckle type connector 13 are connected through interference fit, and the connection is fastened through the fastener. Preferably, the fastener is a clamp.

[0039] The other end of the second pipeline 17 is sleeved with a pipe clamp 20 and is fixedly connected with the second support 21 through a fixing piece, and the second support 21 is fixedly connected with the drive axle.

[0040] In addition, the first pipeline 16 and the second pipeline 17 are both flexible pipes, which are convenient for pipeline setting, and are preferably silica gel pipes.

[0041] The utility model provides a kind of drive axle assembly, such as Figure 3 And 4It is a structural schematic view of the drive axle assembly. In the specific embodiment, the drive axle assembly comprises a drive axle housing 2, and the drive axle housing 2 is fixedly provided with the ventilation device 1, which communicates the inside of the drive axle housing 2 with the atmosphere, so as to facilitate ventilation of the inside of the drive axle housing 2.

[0042] The drive axle housing 2 is respectively connected with wheel-side reduction boxes 3 at left and right ends.

[0043] The wheel-side reduction boxes 3 are respectively fixedly provided with cantilevers 4 on outer walls at two sides, and the cantilevers 4 are used to connect automobile chassis and support the automobile chassis.

[0044] The wheel-side reduction boxes 3 are respectively fixedly provided with cantilevers 4 on outer walls at two sides, and the cantilevers 4 are used to connect automobile chassis and support the automobile chassis.

[0045] In the specific embodiment of the utility model, the drive axle housing 2 is provided with a thrust rod 6, which bears the lateral force and longitudinal force when the vehicle turns laterally, so as to ensure that the vehicle can keep stable during turning.

[0046] In the specific embodiment of the utility model, the cantilever 4 is provided with an air bag 7 and a shock absorber 8 at one end connected with the automobile chassis. The air bag 7 supports the automobile chassis, and is used to support the weight of the vehicle body and adjust the height of the vehicle body. In addition, the air bag 7 also has a certain damping effect, which improves the driving comfort.

[0047] The shock absorber 8 is connected with the automobile chassis, and is used to reduce the vibration when the vehicle runs.

[0048] In the specific embodiment of the utility model, the drive axle housing 2 is respectively provided with a brake mechanism 9 at left and right ends, which is used to brake the wheel hub.

[0049] The above only describes the specific embodiment of the utility model, and any equivalent changes and modifications made by any person skilled in the art without departing from the concept and principle of the utility model shall belong to the protection scope of the utility model.

Claims

1. A ventilation device for a low-floor drive axle of a bus, characterized in that: The ventilation device comprises: a protection box (11), the protection box (11) having a first snap-on joint (12) and a second snap-on joint (13), the first snap-on joint (12) being connected to a drive axle via a first pipeline (16), and the second snap-on joint (13) being connected to the atmosphere via a second pipeline; A vent plug (14) is arranged inside the protection box (11), and the drive axle is connected to the atmosphere through the first pipeline (16), the protection box (11) and the second pipeline (17); The protection box (11) is fixedly connected to the drive axle via a first bracket (15).

2. The ventilation device for a low-floor drive axle of a bus according to claim 1, characterized in that: The protection box (11) comprises a first protection shell (111) and a second protection shell (112) fixedly connected to the first protection shell (111), wherein: One end of the first protective shell (111) has a base (113), and the first snap-on connector (12) is arranged on the base (113) and communicates with the interior of the first protective shell (111); The base (113) is fixedly connected to the first bracket (15) via a fixing member; The second protective shell (112) is sleeved on the outside of the first protective shell (111) from the other end thereof, and the second snap-on connector (13) is arranged on the side wall of the second protective shell (112) and is connected to the interior of the second protective shell (112).

3. The ventilation device for a low-floor drive axle of a bus according to claim 2, characterized in that: A clamping structure (114) is provided on both sides of the base (113) of the first protective shell (111), and a block structure (115) is provided on the side wall of the second protective shell (112) corresponding to the clamping structure (114), and the block structure (115) is clamped in cooperation with the clamping structure (114).

4. The ventilation device for a low-floor drive axle of a bus according to claim 2, characterized in that: A sealing ring is provided on one side of the base (113) close to the second protective shell (112).

5. The ventilation device for a low-floor drive axle of a bus according to claim 1, characterized in that: One end of the first pipeline (16) is fixedly connected to the first snap-on joint (12) via a fastener, and the other end of the first pipeline (16) is connected to a joint (18); The connector (18) is fixed on the drive axle and communicates with the interior thereof; The first pipeline (16) is sleeved with a bellows (19).

6. The ventilation device for a low-floor drive axle of a bus according to claim 1, characterized in that: One end of the second pipeline (17) is fixedly connected to the second snap-on connector (13) via a fastener; The other end of the second pipeline (17) is sleeved with a pipe clamp (20) and fixedly connected to a second bracket (21) via a fixing member. The second bracket (21) is fixedly connected to the drive axle.

7. A drive axle assembly, characterized in that: The drive axle assembly comprises: a drive axle housing (2), wherein a venting device (1) according to any one of claims 1 to 6 is fixedly provided on the drive axle housing (2), and the venting device (1) connects the interior of the drive axle housing (2) with the atmosphere; The left and right ends of the drive axle housing (2) are respectively connected to wheel-side reduction gearboxes (3); Cantilevers (4) are fixedly provided on the outer walls of both sides of the wheel-side reduction box (3), and the ends of the cantilevers (4) are used to connect to the chassis of the automobile; The output end of the wheel reduction box (3) is drivingly connected to a wheel half-shaft (5), and the other end of the wheel half-shaft (5) is fixedly connected to a wheel hub.

8. The drive axle assembly according to claim 7, characterized in that: A thrust rod (6) is provided on the drive axle housing (2).

9. The drive axle assembly according to claim 7, characterized in that: An air bag (7) and a shock absorber (8) are provided at one end of the cantilever (4) connected to the automobile chassis, wherein: The airbag (7) is supported and connected to the chassis of the automobile, and is used to support the weight of the automobile body and adjust the height of the automobile body; The shock absorber (8) is connected to the chassis of the automobile and is used to reduce vibration when the automobile is running.

10. The drive axle assembly according to claim 7, characterized in that: Braking mechanisms (9) are also provided at the left and right ends of the drive axle housing (2).

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