CN216069483U

CN216069483U - Rear axle

Info

Publication number: CN216069483U
Application number: CN202122808744.4U
Authority: CN
Inventors: 宋广锡; 苏援农; 师傲
Original assignee: Xuzhou Shunjiu Locomotive Technology Co ltd
Current assignee: Xuzhou Shunjiu Locomotive Technology Co ltd
Priority date: 2021-11-16
Filing date: 2021-11-16
Publication date: 2022-03-18
Anticipated expiration: 2031-11-16

Abstract

The utility model discloses a rear axle which comprises a transmission disc and a brake part, wherein the transmission disc comprises a cylinder body and a ring body which is arranged on the side wall of the cylinder body and is concentric with the cylinder body, a plurality of first connecting holes are formed in the ring body, the brake part comprises a bearing chamber which can be sleeved on a bridge pipe and a brake structure which is arranged on the outer wall of the bearing chamber, and the end part of the cylinder body, close to one side of the bearing chamber, of the ring body can be inserted into the bearing chamber. According to the utility model, the transmission disc and the brake part are arranged, the transmission disc can be in key connection with the half shaft to transmit torque, the transmission disc can be connected with the brake part through bolts penetrating through the first connecting hole and the second connecting hole, and the torque is transmitted to the brake part through the bolts; the partial cylinder of driving plate can insert the bearing room in, this makes driving plate and brake portion be connected more closely, and transmission effect is good, and simultaneously under this kind of mating mode, the processing of driving plate and brake portion is simple, need not traditional complicated processing technology and also can satisfy the intensity requirement of torque transmission, the cost is reduced.

Description

Rear axle

Technical Field

The utility model relates to a rear axle, and belongs to the technical field of rear axles.

Background

The rear axle of the existing electric tricycle mostly adopts a drum brake structure and sometimes also adopts a disc brake structure. The brake drum of the existing drum brake structure is generally a five-hole plate wheel, has high manufacturing cost and cannot be installed in a matching way with a transmission disc, so the utility model provides a rear axle to solve the matching problem of the transmission disc and a brake mechanism in the prior art and reduce the production cost.

SUMMERY OF THE UTILITY MODEL

The present invention provides a rear axle to solve the above-mentioned problems of the prior art.

In order to achieve the purpose, the utility model adopts the technical scheme that:

the utility model provides a rear axle, including driving plate and brake portion, the driving plate includes the cylinder and sets up on the cylinder lateral wall and with the endocentric ring body of cylinder, the first connecting hole of a plurality of has been seted up on the ring body, be provided with in the cylinder with semi-axis complex key-type connection structure, brake portion is including can overlapping the bearing room on the bridge pipe and setting up the brake structure on the outer wall of bearing room, brake structure include with first connecting hole complex second connecting hole, the cylinder tip that the ring body is close to bearing room one side can insert in the bearing room, the mounting groove has been seted up to the one end that brake portion was kept away from to the cylinder.

As a further improvement of the utility model, a reinforcing flange is arranged at the joint of one side of the ring body, which is far away from the brake part, and the column body.

As a further improvement of the utility model, the key connection structure is a spline shaft key groove, and a bearing is arranged in the mounting groove.

As a further improvement of the utility model, the key connection structure is a tapered shaft key groove.

As a further improvement of the utility model, a bearing sleeved on the bridge pipe is arranged in the bearing chamber, a limit flange is arranged at one end of the bearing chamber far away from the transmission disc, and a clamp spring groove is arranged in the bearing chamber.

As a further improvement of the utility model, the brake structure is a brake drum, and a square disc is fixedly sleeved on the bridge pipe.

The utility model is further improved and characterized in that the brake structure is a disc brake disc, and a cat ear disc is fixedly sleeved on the bridge pipe.

As a further improvement of the utility model, the brake structure and the ring body are both provided with third connecting holes for installing locking bolts.

As a further improvement of the utility model, the stepped pipe orifice is processed by the bridge pipe through a cold pressing process.

Compared with the prior art, the utility model has the beneficial effects that:

the transmission disc can be in key connection with the half shaft to transmit torque by arranging the transmission disc and the brake part, the transmission disc can be connected with the brake part by bolts penetrating through the first connecting hole and the second connecting hole, and the torque is transmitted to the brake part by the bolts; the partial cylinder of driving plate can insert the bearing room in, this makes driving plate and brake portion be connected more closely, and transmission effect is good, and simultaneously under this kind of mating mode, the processing of driving plate and brake portion is simple, need not traditional complicated processing technology and also can satisfy the intensity requirement of torque transmission, the cost is reduced.

Drawings

FIG. 1 is a schematic view of the tapered shaft keyway type transmission disc and a drum brake type brake part of the utility model;

FIG. 2 is a schematic view of the tapered shaft keyway type transmission disc and the disc brake type brake part of the present invention;

FIG. 3 is a perspective view of a tapered shaft keyway transmission disk of the present invention;

FIG. 4 is a cross-sectional view of the tapered shaft keyway transmission disk of the present invention;

FIG. 5 is a front view of the tapered shaft keyway transmission disk of the present invention;

FIG. 6 is a cross-sectional view of the drum brake type brake of the present invention;

FIG. 7 is a front view of the drum brake type brake of the present invention;

FIG. 8 is a schematic view of the spline shaft keyway type transmission disc and the drum brake type brake part of the present invention;

FIG. 9 is a schematic view of the spline shaft keyway type transmission disc and the disc brake type brake part of the present invention;

FIG. 10 is a cross-sectional view of the splined shaft splined drive plate of the present invention;

FIG. 11 is a front view of the splined shaft splined drive plate of the present invention;

FIG. 12 is a cross-sectional view of the disc brake type brake portion of the present invention;

fig. 13 is a front view of the disc brake type brake part of the present invention.

In the figure: 1. the transmission plate, 11, the cylinder, 12, the ring body, 13, first connecting hole, 14, key-type connection structure, 15, mounting groove, 16, strengthen the flange, 17, the third connecting hole, 2, brake portion, 21, the bearing room, 211, spacing flange, 212, jump ring groove, 22, brake structure, 3, the bridge pipe, 31, square disc, 32, the cat ear dish, 33, the mouth of pipe, 4, the semi-axis.

Detailed Description

The technical solutions in the implementation of the present invention will be made clear and fully described below with reference to the accompanying drawings, and the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.

The rear axle of the electric vehicle generally comprises a bridge package, bridge pipes arranged at two ends of the bridge package, half shafts arranged in the bridge pipes and hub mechanisms arranged at the end parts of the half shafts. The competition of the electric vehicle industry is more intense, and how to reduce the cost while ensuring the quality is an important research and development target of enterprises to obtain competitive advantages. In order to improve the conventional connection structure between the wheel hub and the axle shaft and reduce the production cost, the present invention proposes the following embodiments.

As shown in fig. 1 to 13, the rear axle provided in the embodiment of the present invention has the following common features, including a transmission disc 1 and a brake part 2, where the transmission disc 1 includes a cylinder 11 and a ring 12 disposed on a side wall of the cylinder 11 and concentric with the cylinder 11, four first connection holes 13 are disposed on the ring 12, a key connection structure 14 matched with the axle shaft 4 is disposed in the cylinder 11, the brake part 2 includes a bearing chamber 21 capable of being sleeved on the axle pipe 3 and a brake structure 22 disposed on an outer wall of the bearing chamber 21, the brake structure 22 includes a second connection hole matched with the first connection hole 13, an end of the cylinder 11 on a side of the ring 12 close to the bearing chamber 21 can be inserted into the bearing chamber 21, and an installation groove 15 is disposed on an end of the cylinder 11 far from the brake part 2. By arranging the transmission disc 1 and the brake part 2, the transmission disc 1 can be in key connection with the half shaft 4 to transmit torque, the transmission disc 1 can be connected with the brake part 2 through bolts penetrating through the first connecting hole 13 and the second connecting hole, and the bolts are used for transmitting torque to the brake part 2; the partial cylinder 11 of driving plate 1 can insert bearing chamber 21 in, this makes driving plate 1 be connected with brake portion 2 and more closely inseparable, and transmission effect is good, and simultaneously under this kind of cooperation mode, the processing of driving plate 1 and brake portion 2 is simple, need not traditional complicated processing technology and also can satisfy the intensity requirement of torque transmission, the cost is reduced.

As a modification, a reinforcing flange 16 is arranged at the joint of the side of the ring body 12 away from the brake part 2 and the column body 11. The reinforcing flange 16 can strengthen the structural strength and prevent the joint from cracking.

As an improvement, a bearing sleeved on the bridge pipe 3 is installed in the bearing chamber 21, a limit flange 211 is arranged at one end of the bearing chamber 21 far away from the transmission disc 1, and a clamp spring groove 212 is formed in the bearing chamber 21. Through setting up installation bearing in bearing room 21, can enough make things convenient for the centering of brake portion 2 and bridgepipe 3, also can increase the joint strength between brake portion 2 and the bridgepipe 3, through setting up limit flange 211 and jump ring groove 212, can install the jump ring in jump ring groove 212, fix the bearing between limit flange 211 and jump ring, realize the bearing fixed in bearing room 21, then screw up the nut at 3 tip of bridgepipe, let nut locking jump ring carry on spacingly.

As an improvement, the brake structure 22 and the ring body 12 are both provided with third connecting holes 17 for installing locking bolts. As shown in fig. 5, by providing the third connection hole 17, the brake part 2 can be connected to the transmission plate 1 again by using a bolt having a smaller diameter than the first connection hole 13, the bolt in the third connection hole 17 mainly performs a locking function, and the bolt in the first connection hole 13 mainly transmits torque.

As an improvement, the bridge pipe 3 is processed into a step-shaped pipe orifice 33 through a cold pressing process. The end of the conventional bridge tube 3 needs to be welded with a short bridge tube 3 with a small diameter for installing the brake drum, and the method is high in processing cost. The tube orifice 33 formed by the cold pressing process has better integrity and lower manufacturing cost. Cold pressing is a processing method in which a metal blank is placed in a die cavity of a die at normal temperature, and metal is forced to be extruded out of the die cavity under the action of strong pressure and a certain speed, so that an extruded part with a required shape, size and certain mechanical property is obtained.

Based on the above design, the present invention further proposes the following embodiments.

Example 1:

as shown in fig. 8, 9, 10 and 11, the key connecting structure 14 is a spline shaft key groove, and a bearing is installed in the installation groove 15. When key connection structure 14 adopts splined connection's mode, set up the spline on semi-axis 4 promptly, and set up the spline shaft keyway on the driving plate 1, need install the bearing in mounting groove 15 this moment, realize the centering of driving plate 1 and semi-axis 4, collision wear when reducing the transmission.

Example 2:

as shown in fig. 1-5, the keyed connection 14 is a tapered shaft keyway. When key connection structure 14 adopts the mode of tapering shaft key connection, the tip of semi-axis 4 sets up the tapering promptly, and sets up the taper groove on the driving plate 1, and driving plate 1 and semi-axis 4 adopt the key-type connection, need not to install the bearing at the dress inslot this moment, also can realize driving plate 1 and semi-axis 4's centering.

Example 3:

as shown in fig. 1, the brake structure 22 is a brake drum, and a square disc 31 is fixedly sleeved on the bridge pipe 3. The square disc 31 is welded on the bridge pipe 3, and a drum brake accessory can be arranged on the square disc 31 and is matched with a brake drum.

Example 4:

as shown in fig. 2, the brake structure 22 is a disc brake, and a cat ear disc 32 is fixedly sleeved on the bridge pipe 3. The cat ear disc 32 welds on the bridge pipe 3, and the mountable dish of cat ear disc 32 is stopped the accessory and is used for stopping the dish cooperation with the dish.

When in use: the utility model can conveniently adjust the collocation of the rear axle according to the requirement of a manufacturer, and selects to use a disc brake or a drum brake, the two transmission discs 1 are both provided with the bearing chamber 21, and the two transmission discs 1 only have different key groove structures, so that the uniform die casting can be adopted, and then different key grooves are processed, thereby not only realizing uniform appearance, but also reducing the production cost.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should make the description as a whole, and the embodiments may be appropriately combined to form other embodiments understood by those skilled in the art.

Claims

1. A rear axle is characterized by comprising a transmission disc (1) and a brake part (2), the transmission disc (1) comprises a cylinder body (11) and a ring body (12) which is arranged on the side wall of the cylinder body (11) and is concentric with the cylinder body (11), a plurality of first connecting holes (13) are formed in the ring body (12), a key connecting structure (14) matched with the half shaft (4) is arranged in the column body (11), the brake part (2) comprises a bearing chamber (21) which can be sleeved on the bridge pipe (3) and a brake structure (22) which is arranged on the outer wall of the bearing chamber (21), the brake structure (22) comprises a second connecting hole matched with the first connecting hole (13), the end part of the cylinder (11) of the ring body (12) close to one side of the bearing chamber (21) can be inserted into the bearing chamber (21), and one end of the column body (11) far away from the brake part (2) is provided with an installation groove (15).

2. A rear axle according to claim 1, characterized in that the connection between the side of the ring (12) remote from the brake part (2) and the post (11) is provided with a reinforcing flange (16).

3. A rear axle according to claim 1, characterized in that the key connection (14) is a spline shaft key slot, and the mounting groove (15) is provided with a bearing.

4. A rear axle according to claim 1, wherein the keyed connection (14) is a tapered shaft keyway.

5. The rear axle according to claim 1, characterized in that a bearing sleeved on the axle tube (3) is installed in the bearing chamber (21), a limit flange (211) is arranged at one end of the bearing chamber (21) far away from the transmission disc (1), and a clamp spring groove (212) is formed in the bearing chamber (21).

6. A rear axle according to claim 1, characterized in that the brake structure (22) is a brake drum, and a square disc (31) is fixedly attached to the axle tube (3).

7. A rear axle according to claim 1, characterized in that the brake structure (22) is a disc brake disc, and a cat-ear disc (32) is fixedly secured to the axle tube (3).

8. The rear axle according to claim 1, characterized in that the brake structure (22) and the ring body (12) are provided with third connecting holes (17) for mounting locking bolts.

9. A rear axle according to claim 1, characterized in that the axle tube (3) is provided with a stepped bore (33) by a cold-pressing process.