CN217730133U

CN217730133U - Novel electric tricycle speed reduction bridge pipe assembly structure

Info

Publication number: CN217730133U
Application number: CN202221976904.4U
Authority: CN
Inventors: 由远洋; 闵雄; 栗孟乐; 郭凯歌; 孟博
Original assignee: Luoyang Northern EK Chor Motorcycle Co Ltd
Current assignee: Luoyang Northern EK Chor Motorcycle Co Ltd
Priority date: 2022-07-29
Filing date: 2022-07-29
Publication date: 2022-11-04
Anticipated expiration: 2032-07-29

Abstract

The utility model discloses a novel electric tricycle deceleration bridge pipe assembly structure, which comprises a box body, a box cover and a deceleration bridge pipe assembly; the box body and the box cover are arranged oppositely, a cavity structure is formed in the box body and the box cover, and the reduction bridge pipe assembly is arranged in the cavity of the reduction bridge pipe assembly; the box body and the box cover are positioned by a positioning pin arranged at the top of the box body and are connected with each other by a fixing bolt at the bottom of the box body and the box cover to form a split structure; an input shaft which is axially arranged is arranged on the upper part in a cavity formed by the box body and the box cover through a bearing A and a bearing B which are symmetrically arranged at two ends; and the lower part of the input shaft is provided with an axially arranged middle shaft component in a pressing way through symmetrically arranged bearings C. The utility model discloses a set up the locating pin location at the top of box and case lid, can improve the machining precision of dead eye, guarantee the installation accuracy of gear shaft to and interconnect for split type structure through setting up fixing bolt in its bottom, welding seam and welding slag in the reducible processing improve the manufacturing accuracy, can reduce rear axle fault rate by a wide margin.

Description

Novel electric tricycle speed reduction bridge pipe assembly structure

Technical Field

The utility model belongs to the technical field of electric tricycle, mainly relate to a novel electric tricycle deceleration bridge pipe assembly structure.

Background

At present, the speed reduction bridge pipe of the tricycle in the market is mainly a whole punching press type bridge pipe, is mostly a steel plate punching press welding part, has a large amount of welding seams and welding slag, and has low manufacturing precision, high failure rate and large noise. With the continuous improvement of quality requirements of users on tricycles, goods or people have unstable center of gravity shift when the user turns and brakes during goods transportation or sits; therefore, the market needs a novel electric tricycle speed reduction bridge pipe assembly structure which can ensure the use performance and can improve the use comfort.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a novel electric tricycle speed reduction bridge pipe assembly structure for overcome the problem in the background art.

For realizing the purpose of the utility model, the adopted technical proposal is as follows:

a novel electric tricycle deceleration bridge pipe assembly structure comprises a box body, a box cover and a deceleration bridge pipe assembly; the box body and the box cover are arranged oppositely, a cavity structure is formed in the box body and the box cover, and the reduction bridge pipe assembly is arranged in the cavity of the reduction bridge pipe assembly; the box body and the box cover are positioned by a positioning pin arranged at the top of the box body and are connected with each other by a fixing bolt at the bottom of the box body and the box cover to form a split structure; an input shaft which is axially arranged is arranged on the upper part in a cavity formed by the box body and the box cover through a bearing A and a bearing B which are symmetrically arranged at two ends; the lower part of the input shaft is provided with an axially arranged middle shaft component in a pressing way through symmetrically arranged bearings C; the speed reduction bridge pipe assembly comprises a differential assembly arranged in the middle of the cavity and two half shafts which are coaxially and symmetrically arranged; the differential assembly is pressed in the cavities of the box body and the box cover through two bearings D arranged at two ends of the differential assembly; the input ends of the two half shafts are synchronously and sequentially inserted into the differential assembly through oil seal guide sleeves, oil seals and half shaft bearings arranged in the cavity.

The parts of the two half shafts, which penetrate out of the corresponding box body and the box cover, are all sleeved with bridge pipes, and the tail ends of the bridge pipes at the two sides are respectively installed on the two hub assemblies at the end parts of the bridge pipes.

The front ends of the two bridge pipes are connected with each other through bolts arranged at the lower parts of the box body and the box cover.

And a bearing E is arranged at the joint of the inner wall of the end part of the bridge pipe and the hub assembly, and the bearing E is pressed in the bridge pipe through a bolt and a gasket.

The hub assembly is connected with the end part of the half shaft through a nut arranged on the hub assembly; and a spring is clamped between the hub assembly and the bearing E for axial positioning.

The half shaft and the hub assembly are in conical surface fit.

Compared with the prior art, the beneficial effects of the utility model are that: through setting up the locating pin location at the top of box and case lid, can improve the machining precision of dead eye, guarantee the installation accuracy of gear shaft to and interconnect for split type structure through setting up fixing bolt in its bottom, welding seam and welding slag in the reducible processing improve the manufacturing precision, can reduce rear axle fault rate by a wide margin, improve the riding comfort of tricycle.

Drawings

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

Fig. 2 is a schematic structural view of a hub assembly part of the present invention.

Fig. 3 is an overall schematic view of the present invention.

In the figure: 1. the device comprises a box body, 2, a box cover, 3, a positioning pin, 4, a fixing bolt, 5, bearings A,6, bearings B,7, an input shaft, 8, bearings C,9, an intermediate shaft component, 10, a differential assembly, 11, a half shaft, 12, bearings D,13, an oil seal guide sleeve, 14, an oil seal, 15, a half shaft bearing, 16, a bridge pipe, 17, a hub assembly, 18, bearings E,19, nuts, 20 and springs.

Detailed Description

The invention is described below with reference to the drawings and the following detailed description:

as shown in fig. 1-3, a novel electric tricycle deceleration bridge pipe assembly structure comprises a box body 1, a box cover 2 and a deceleration bridge pipe assembly; the box body 1 and the box cover 2 are arranged oppositely, a cavity structure is formed in the box body and the box cover, and the reduction bridge pipe assembly is arranged in a cavity of the reduction bridge pipe assembly; the box body 1 and the box cover 2 are positioned by a positioning pin 3 arranged at the top part and are connected with each other by a fixing bolt 4 at the bottom part, so that a split structure is formed; the split structure can reduce the processing difficulty of the box body 1 and the box cover 2 and reduce welding seams and welding slag; an input shaft 7 which is axially arranged is pressed on the upper part in a cavity formed by the box body 1 and the box cover 2 through a bearing A5 and a bearing B6 which are symmetrically arranged at two ends; the lower part of the input shaft 7 is provided with an axially arranged intermediate shaft assembly 9 in a pressing way through symmetrically arranged bearings C8; the speed reduction axle pipe assembly comprises a differential assembly 10 arranged in the middle of the cavity and two half shafts 11 which are coaxially and symmetrically arranged; the differential assembly 10 is pressed in the cavities of the box body 1 and the box cover 2 through two bearings D12 arranged at the two ends of the differential assembly; the input of two semi-axles 11 all wears to establish in proper order in step through the oil blanket uide bushing 13, the oil blanket 14 and the semi-axle bearing 15 that set up in the cavity then insert differential mechanism assembly 10, oil blanket uide bushing 13 can prevent effectively that semi-axle 11 from causing the damage to the oil blanket in the assembling process, reduces the risk of oil leak.

The parts of the two half shafts 11, which penetrate out of the corresponding box body 1 and the box cover 2, are respectively sleeved with a bridge pipe 16, and the tail ends of the bridge pipes 16 at the two sides are respectively arranged on two hub assemblies 17 at the end parts of the bridge pipes; the front ends of the two bridge pipes 16 are mutually connected through fixing bolts 4 arranged at the lower parts of the box body 1 and the box cover 2, and the bridge pipes can be conveniently detached to replace internal parts by adopting bolt connection, so that the later maintenance cost can be reduced; a bearing E18 is arranged at the joint of the inner wall of the end part of the bridge pipe 16 and the hub assembly 17, and the bearing E18 is pressed in the bridge pipe 16 through a bolt and a gasket; the hub assembly 17 is connected with the end part of the half shaft 11 through a nut 19 arranged on the hub assembly; the spring 20 is clamped between the hub assembly 17 and the bearing E18 for axial positioning, and compared with the traditional positioning sleeve positioning, the positioning by the spring 20 can ensure that the hub is tightly attached to the conical surface of the half shaft 11, avoid the phenomenon that the traditional positioning sleeve is not tightly pressed and effectively prevent the problems of hub looseness and abnormal sound in the driving process; the half shaft 11 and the hub assembly 17 are in conical surface fit, and the machining mode of conical surface fit can reduce radial machining errors and ensure the axial stability of the half shaft.

The utility model is different from the traditional integral rear axle, the utility model is a split axle housing structure, the box body and the box cover are easy to process and manufacture, and the processing precision of the bearing hole can be improved through the positioning of the positioning pin and the interconnecting mode of the fixing bolt, the installation precision of the gear shaft is ensured, and the noise can be effectively reduced; meanwhile, a half shaft oil seal guide sleeve penetrates through an oil seal and a half shaft bearing to be inserted into the differential mechanism, the oil seal is prevented from being scratched, and a spring is adopted between the wheel hub assembly and the bearing to perform axial positioning so as to prevent the wheel hub from loosening.

Above, only be the embodiment of the preferred of the present invention, but the scope of protection of the present invention is not limited thereto, and any person skilled in the art is in the technical scope disclosed in the present invention, and according to the technical solution of the present invention and the design of the present invention, all equivalent replacements or changes should be covered within the scope of protection of the present invention.

Claims

1. A novel electric tricycle deceleration bridge pipe assembly structure comprises a box body (1), a box cover (2) and a deceleration bridge pipe assembly; the method is characterized in that: the box body (1) and the box cover (2) are arranged oppositely, a cavity structure is formed in the box body and the box cover, and the reduction bridge pipe assembly is arranged in a cavity of the reduction bridge pipe assembly; the box body (1) and the box cover (2) are positioned by a positioning pin (3) arranged at the top of the box body and are connected with each other by a fixing bolt (4) arranged at the bottom of the box body, and a split structure is formed by the box body and the box cover; an input shaft (7) which is axially arranged is pressed on the upper part in a cavity formed by the box body (1) and the box cover (2) through a bearing A (5) and a bearing B (6) which are symmetrically arranged at two ends; the lower part of the input shaft (7) is provided with an axially arranged middle shaft component (9) in a pressing way through a bearing C (8) which is symmetrically arranged; the speed reduction axle pipe assembly comprises a differential assembly (10) arranged in the middle of the cavity and two half shafts (11) which are coaxially and symmetrically arranged; the differential assembly (10) is pressed in cavities of the box body (1) and the box cover (2) through two bearings D (12) arranged at two ends of the differential assembly; the input ends of the two half shafts (11) are synchronously and sequentially penetrated through an oil seal guide sleeve (13), an oil seal (14) and a half shaft bearing (15) arranged in the cavity and then inserted into the differential assembly (10).

2. The novel electric tricycle deceleration bridge pipe assembly structure of claim 1, which is characterized in that: the parts of the two half shafts (11) which penetrate out of the corresponding box body (1) and the box cover (2) are all sleeved with bridge pipes (16), and the tail ends of the bridge pipes (16) on the two sides are respectively installed on two hub assemblies (17) at the end parts of the bridge pipes.

3. The novel electric tricycle deceleration bridge pipe assembly structure of claim 2, characterized in that: the front ends of the two bridge pipes (16) are connected with each other through bolts arranged at the lower parts of the box body (1) and the box cover (2).

4. The novel electric tricycle deceleration bridge pipe assembly structure of claim 3, characterized in that: a bearing E (18) is arranged at the joint of the inner wall of the end part of the bridge pipe (16) and the hub assembly (17), and the bearing E (18) is pressed in the bridge pipe (16) through a bolt and a gasket.

5. The novel electric tricycle deceleration bridge pipe assembly structure of claim 4, which is characterized in that: the hub assembly (17) is connected with the end part of the half shaft (11) through a nut (19) arranged on the hub assembly; and a spring (20) is clamped between the hub assembly (17) and the bearing E (18) for axial positioning.

6. The novel electric tricycle deceleration bridge pipe assembly structure of claim 5, characterized in that: the half shaft (11) is in conical surface fit with the hub assembly (17).