CN210082827U - Drive axle assembly of explosion-proof tractor - Google Patents

Abstract

The utility model provides an explosion-proof tractor transaxle assembly includes axle housing, speed reducer casing, differential mechanism assembly, wheel hub, semi-axis and bevel gear axle, the axle housing includes the spindle nose at middle axle housing and both ends, the one end of spindle nose is packed into middle axle housing, wheel hub passes through sealed locking structrual installation and is in on the spindle nose other end, external gear box on the speed reducer casing, the outside rigid coupling of gear box has the biax motor, the one end of the motor shaft of biax motor stretch into in the gear box and with the driving gear connection in the gear box, be equipped with in the gear box with driving gear meshing and with the driven gear of bevel gear hub connection, be connected with braking structure on the motor shaft. The utility model discloses in through adopting the biax motor, will brake the structural connection on the biax motor, assemble wheel hub, spindle nose and semi-axis, from this the spindle nose will not receive the torsion effect, reduces the condition that appears warping, has reduced the size at transaxle both ends when realizing motor braking.

Description

Drive axle assembly of explosion-proof tractor

Technical Field

The utility model belongs to the technical field of explosion-proof tractor machinery, concretely relates to explosion-proof tractor transaxle assembly.

Background

Along with the development of the world economy, especially the development of the petroleum and chemical industry and the continuous increase of chemical raw material varieties, the places where explosive gas potential safety hazards exist in production, transportation, storage and the like are also continuously expanded, in order to ensure safe and efficient production, storage transportation vehicles and forklifts with explosion prevention are increasingly valued by all countries in the world, and are used as one of the most important parts of explosion-proof forklifts, the production development of drive axles is more and more favorable, wheel-side braking is adopted in the braking of the drive axles of the existing forklifts, the size of the drive axles is increased, shaft heads are easy to deform, and the cost is increased.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an explosion-proof tractor transaxle assembly to overcome above-mentioned technical problem.

The above technical purpose of the present invention can be achieved by the following technical solutions:

an explosion-proof tractor drive axle assembly includes axle housing, speed reducer casing, differential mechanism assembly, wheel hub, semi-axis and bevel gear axle, the differential mechanism assembly is arranged in the speed reducer casing, speed reducer casing rigid coupling is in on the axle housing, the main bevel gear of bevel gear axle with the meshing of differential mechanism's from bevel gear, the axle housing includes the spindle nose at intermediate axle housing and both ends, the one end of spindle nose is packed into the intermediate axle housing, wheel hub installs on the spindle nose other end through sealed locking structure, the semi-axis is packed into in the spindle nose, external gear box on the speed reducer casing, the outside rigid coupling of gear box has a pair of axle machine, the one end of the motor shaft of two axle machine stretches into in the gear box and with the driving gear connection in the gear box, be equipped with in the gear box with driving gear meshing and through the spline with the driven gear of bevel gear axle connection, and the other end of the motor shaft is connected with a braking structure for transmitting braking force through the motor shaft.

The utility model discloses further technical scheme, the braking structure include the stopper, with stopper matched with brake drum, through backing plate, the swing joint of bolted connection on the biax motor the epaxial bearing housing of motor, the stopper passes through bolt two to be connected on the backing plate, the brake drum passes through three rigid couplings of bolt and is in on the bearing housing.

The utility model discloses further technical scheme, sealed locking structure is including cup jointing epaxial and with bearing, the threaded connection of wheel hub contact are in the first end of axle is served and near the bearing is with the locking the lock nut of bearing is one, lock nut's the outside is equipped with in proper order and connects epaxial lock washer one, lock washer two and lock nut two, two threads of lock nut are in epaxial.

The utility model discloses further technical scheme, hollow round tray structure in the middle of the locking washer one adopts, the circular chamber lid of locking washer one closes locking nut one, the diameter of locking washer two is greater than the diameter of locking washer one, be connected with on the periphery circle of locking washer one can with the two spacing washers that form a certain clearance of locking washer, just be located on the periphery circle of locking washer one spacing washer with be equipped with one between the locking washer two and be used for sealed circular seal.

The utility model discloses further technical scheme, the circular seal adopts the felt material.

The utility model discloses further technical scheme, it has a plurality of pinholes one to go up along its axial evenly distributed on the locking washer two, the locking washer one with be equipped with one in the one side of two contacts of locking washer and with pinhole one corresponding pinhole two, be equipped with one on the lock nut one with pinhole one and the two corresponding connecting pin of pinhole.

The utility model discloses further technical scheme, the spindle nose with middle axle housing is fixed through the bolt.

Has the advantages that: 1. in the utility model, a double-shaft motor is connected by adopting a double-box structure, a braking structure is connected on the double-shaft motor, and then the wheel hub, the shaft head and the half shaft are assembled by a sealing locking structure, so that the sizes of two ends of the axle housing are reduced, and the shaft head is not affected by the braking torsion, thereby reducing the deformation;

2. in the utility model, through the thread processing of the spindle head, the locking function is realized through the action of the locking nut I, the locking washer II and the locking nut II, and meanwhile, the size design of the locking washer I, the limiting washer and the locking washer II is realized, and the sealing ring is connected between the limiting washer and the locking washer II, so that the sealing function is realized; from this the utility model discloses a when the structural design that axle housing both ends adopted wheel hub, spindle nose and semi-axis results in the structure to be compacter, effectively prevent in lubricating oil gets into wheel hub when realizing the locking function because of the above-mentioned sealed locking structure of accessible.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic structural view of the braking structure of the present invention;

fig. 3 is a schematic structural view of the middle sealing and locking structure of the present invention;

fig. 4 is an enlarged schematic view of the sealing and locking structure of the present invention;

fig. 5 is a schematic structural diagram of a first locking nut of the present invention, wherein (a) is a front view of the first locking nut, and (b) is a side view;

fig. 6 is a schematic structural diagram of a first lock washer according to the present invention, wherein (c) is a front view of the first lock washer, and (d) is a side view;

fig. 7 is a schematic structural view of a second lock washer of the present invention;

in the figure: 10. an axle housing; 11. an intermediate axle housing; 12. a shaft head; 20. a speed reducer housing; 30. a differential assembly; 40. a hub; 50. a half shaft; 60. a bevel gear shaft; 70. a gear case; 80. a sealing and locking structure; 81. a bearing; 82. locking the first nut; 82-1 and a pin hole III; 83-1 and a second pin hole; 83. a first locking washer; 84-1, a first pin hole; 84. a second locking washer; 85. locking a second nut; 86. a limiting washer; 87. a circular seal ring; 88. a connecting pin; 90. a braking structure; 100. a driving gear; 110. a double-shaft motor; 120. a driven gear.

Detailed Description

In the description of the present invention, unless otherwise specified, the terms "upper", "lower", "left", "right", "front", "rear", and the like indicate orientations or positional relationships only for the purpose of describing the present invention and simplifying the description, but do not indicate or imply that the device or structure referred to must have a particular orientation and therefore should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

As shown in fig. 1, an explosion-proof tractor transaxle assembly, including axle housing, speed reducer casing, differential mechanism assembly, wheel hub, semi-axis and bevel gear axle, wherein the differential mechanism assembly set up in the speed reducer casing, speed reducer casing rigid coupling is in on the axle housing, the main bevel gear of bevel gear axle with differential mechanism from the bevel gear meshing, the axle housing include the spindle nose at middle axle housing and both ends, every the one end of spindle nose is packed into middle axle housing, and will through the bolt the spindle nose with middle axle housing rigid coupling gets up, wheel hub passes through sealed locking structural mounting in on the spindle nose other end, the semi-axis is packed into in the spindle nose, its one end is connected with the meshing of differential mechanism assembly after the semi-axis is packed into, the other end pass through the bolt with wheel hub rigid coupling.

As shown in fig. 1, a gear box is externally connected to the reducer housing through a bolt, a double-shaft motor is fixedly connected to the outer side of the gear box through a bolt, one end of a motor shaft of the double-shaft motor extends into the gear box and is connected with a driving gear arranged in the gear box, a driven gear meshed with the driving gear and connected with one end of the bevel gear shaft through a spline is arranged in the gear box, a brake structure used for transmitting braking force through the motor shaft is connected to the other end of the motor shaft, as shown in fig. 2, the brake structure comprises a brake and a brake drum matched with the brake, a backing plate is connected to the double-shaft motor through a bolt, the brake is fixedly connected to the backing plate through a bolt two, a bearing sleeve is movably connected to the motor shaft, and the brake drum is fixedly connected to the bearing sleeve through a bolt three, the braking force generated by the matching of the brake and the brake drum acts on the motor shaft, the other end of the motor shaft acts on the driving gear and the driven gear, and therefore the braking force is transmitted to the bevel gear shaft and finally acts on the differential assembly to stop the movement of the hubs on the two sides, and the whole braking process is achieved.

As shown in fig. 3 and 4, sealed locking structure including cup joint epaxial and with the bearing of wheel hub contact, the one end of spindle nose is located the position department processing of sealed locking structure forms the screw thread end, on the screw thread end near in the bearing is connected with one and is used for locking the lock nut one of bearing, the outside of lock nut one is equipped with in proper order and connects lock washer one, lock washer two and lock nut two on the spindle nose, lock washer one and lock washer cup joint on the screw thread end, lock nut two threads are in on the screw thread end, from this the utility model discloses well wheel hub is based on bearing axial positioning, the bearing is radially based on the spindle nose fixes a position, realizes wheel hub's locking.

As shown in fig. 6, the first locking washer is of a circular tray structure with a hollow center, a circular cavity of the first locking washer covers the first locking nut, meanwhile, the diameter of the second locking washer needs to be larger than that of the first locking washer, a limiting washer capable of forming a certain gap with the second locking washer is connected on a peripheral circle surrounding the first locking washer, the limiting washer and the first locking washer are integrally formed, a circular sealing ring for sealing is arranged on the peripheral circle surrounding the first locking washer and between the limiting washer and the second locking washer, namely, the circular sealing ring is fixed by the first locking washer and the limiting washer, and is preferably made of felt; as shown in fig. 5, a pin hole three 82-1 is formed in the first locking nut, as shown in fig. 6, a pin hole two 83-1 corresponding to the pin hole three is formed in the first locking washer, and as shown in fig. 7, a plurality of pin holes one 84-1 are uniformly distributed in the second locking washer along the axial direction of the second locking washer, so that the first locking nut, the first locking washer and the second locking washer can be connected through a connecting pin connected to the first locking nut, and when the second locking nut is prevented from loosening, the first locking washer and the second locking washer are separated from each other, so that a circular sealing ring is loosened, and finally the circular sealing ring cannot form effective sealing; therefore, the sealing function can be realized while the hub is locked.

In order to make the purpose, technical solution and advantages of the present invention more concise and clear, the present invention is described with the above embodiments, which are only used for describing the present invention, and can not be understood as a limitation to the scope of the present invention. It should be understood that any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims (7)

1. The utility model provides an explosion-proof tractor transaxle assembly, includes axle housing (10), speed reducer casing (20), differential mechanism assembly (30), wheel hub (40), semi-axis (50) and bevel gear axle (60), the differential mechanism assembly is arranged in the speed reducer casing, speed reducer casing rigid coupling is in on the axle housing, the main bevel gear of bevel gear axle with differential mechanism from the bevel gear meshing, its characterized in that, the axle housing includes axle box (11) and spindle nose (12) at both ends, the one end of spindle nose is packed into the axle box, wheel hub passes through sealed locking structure (80) and installs on the spindle nose other end, the semi-axis is packed into in the spindle nose, external gear box (70) on the speed reducer casing, the outside rigid coupling of gear box has a pair axle machine (110), the one end of motor shaft of pair axle machine stretches into in the gear box and be connected with driving gear (120) in the gear box, a driven gear (100) which is meshed with the driving gear and connected with the bevel gear shaft through a spline is arranged in the gear box, and the other end of the motor shaft is connected with a braking structure (90) which is used for transmitting braking force through the motor shaft.

2. The explosion-proof tractor drive axle assembly according to claim 1, wherein the brake structure comprises a brake (91), a brake drum (92) matched with the brake, a backing plate (93) connected to the double-shaft motor through a first bolt (95), and a bearing sleeve (94) movably connected to the motor shaft, the brake is connected to the backing plate through a second bolt (96), and the brake drum is fixedly connected to the bearing sleeve through a third bolt (97).

3. The explosion-proof tractor transaxle assembly of claim 1, wherein the sealing and locking structure comprises a bearing (81) sleeved on the axle head and contacting the hub, a first locking nut (82) screwed on one end of the axle head and abutting against the bearing to lock the bearing, and a first locking washer (83), a second locking washer (84), and a second locking nut (85) connected to the axle head are sequentially disposed on an outer side of the first locking nut, and the second locking nut is screwed on the axle head.

4. The explosion-proof tractor drive axle assembly according to claim 3, wherein the first locking washer is of a hollow-center circular tray structure, a circular cavity of the first locking washer covers the first locking nut, the diameter of the second locking washer is larger than that of the first locking washer, a limiting washer (86) capable of forming a certain gap with the first locking washer is connected to the outer circumference of the first locking washer, and a circular sealing ring (87) for sealing is arranged on the outer circumference of the first locking washer and between the limiting washer and the second locking washer.

5. The explosion-proof tractor drive axle assembly of claim 4 wherein the circular seal ring is of felt material.

6. The explosion-proof tractor drive axle assembly according to claim 3 or 4, characterized in that a plurality of first pin holes are uniformly distributed on the second locking washer along the axial direction thereof, a second pin hole corresponding to the first pin hole is arranged on one surface of the first locking washer, which is in contact with the second locking washer, and a connecting pin (88) corresponding to the first pin hole and the second pin hole is arranged on the first locking nut.

7. The explosion proof tractor drive axle assembly of claim 1 wherein the stub shaft and the intermediate axle housing are secured by bolts.

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