CN216111983U

CN216111983U - Secondary speed reducing structure for chain transmission

Info

Publication number: CN216111983U
Application number: CN202122318451.8U
Authority: CN
Inventors: 俞铁城; 陈雪; 许麒; 李勇; 周成贵; 周利铭
Original assignee: Zhejiang Apollo Sports Technology Co ltd
Current assignee: Zhejiang Apollo Sports Technology Co ltd
Priority date: 2021-09-24
Filing date: 2021-09-24
Publication date: 2022-03-22
Anticipated expiration: 2031-09-24

Abstract

The utility model discloses a two-stage speed reducing structure for chain transmission, which comprises a driving wheel, a driving wheel shaft, a frame and a motor, wherein a rear fork which can be matched with the frame to rotate is arranged between the frame and the driving wheel, a rotating part is arranged between the frame and the rear fork, and an intermediate transmission part which is matched with the motor and the driving wheel is arranged on the rotating part and is used for transmitting the power of the motor to the driving wheel.

Description

Secondary speed reducing structure for chain transmission

Technical Field

The utility model relates to the technical field of beach vehicles, in particular to a two-stage speed reducing structure for chain transmission.

Background

The dune buggy is an all-terrain vehicle, has excellent passing performance, simple and practical vehicle and good cross-country performance, and is applied to various fields by people. The drive power transmission of motor is put to traditional electronic sandy beach car generally adopts the single chain to put in the motor to the rear wheel on, because put in the motor and generally be high rotational speed motor, and the sandy beach car needs the drive power of low speed of a motor vehicle, big moment of torsion, so need very big reduction ratio can satisfy the performance requirement, nevertheless because the rear sprocket is generally installed in the middle of two rear wheels, the requirement of the high trafficability characteristic of sandy beach car leads to can't be done the rear sprocket very big to lead to if directly using the one-level to slow down, just can't be done the reduction ratio very big.

In addition, when the traditional electric off-road vehicle or the dune buggy rides, the rear wheel continuously jumps up and down, and the motor is fixed on the frame and keeps still, so that the distance between the rear wheel and the frame constantly changes, the chain is loosened and tightened, and the chain jumps or breaks. To solve this problem, a chain tensioner having a complicated structure needs to be added, and it generates a large amount of noise during traveling.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects in the prior art, the utility model provides a two-stage speed reducing structure for chain transmission.

In order to solve the technical problems, the utility model is solved by the following technical scheme: a two-stage speed reducing structure for chain transmission comprises a driving wheel, a driving wheel shaft, a frame and a motor.

In the above-mentioned scheme, it is preferred, be equipped with between frame and the drive wheel can with frame cooperation pivoted back fork, be equipped with rotation portion between frame and the back fork, be equipped with in the rotation portion with motor and drive wheel matched with middle transmission portion for with the power transmission of motor to the drive wheel on, its beneficial effect lies in: a transitional transmission part between a motor and a driving wheel is provided, so that the driving wheel can obtain larger torque after passing through an intermediate transmission part.

Among the above-mentioned scheme, preferred, the locating plate on the frame is located to the commentaries on classics cover on the back fork and locating to the portion of rotating, it wears to be equipped with the pivot to change between cover and the locating plate, and its beneficial effect lies in: a specific structure of a rotating part is provided, so that the rotating part can rotate around a frame.

In the above-mentioned scheme, preferred, be equipped with first bush between pivot and commentaries on classics cover, its beneficial effect lies in: a bush which can make rotation smoother is provided.

In the above scheme, it is preferred, pivot one end is located to middle transmission portion, middle transmission portion include with motor matched with first drive wheel, with drive wheel matched with second drive wheel and installation cover, first drive wheel and second drive wheel are all located the installation and are sheathe in, and its beneficial effect lies in: a specific structure of the intermediate transmission part is provided, so that the intermediate transmission part can rotate on the rotating shaft.

In the above scheme, it is preferred, the installation cover is located in the pivot, be equipped with the second bush between installation cover and pivot, first bush and locating plate are leaned on respectively in second bush both ends top, and its beneficial effect lies in: a second bushing between the mounting sleeve and the rotating shaft is provided, so that the mounting sleeve can rotate more smoothly.

In the above scheme, it is preferable that a third driving wheel matched with the first driving wheel is arranged on the motor, a fourth driving wheel matched with the second driving wheel is arranged on the driving wheel shaft, a first driving belt is arranged between the first driving wheel and the third driving wheel, a second driving belt is arranged between the second driving wheel and the fourth driving wheel, and the motor has the advantages that: a specific structure is provided in which the intermediate transmission part is connected to the drive axle and the motor, so that the motor can transmit power to the drive axle.

In the above-mentioned scheme, preferably, the back vent includes the back yoke and locates the commentaries on classics cover of back yoke one end, the back yoke extends to being close to drive wheel one side and is equipped with the back vent mounting panel, be equipped with the sleeve pipe with back vent matched with on the drive wheel shaft, sleeve pipe both ends symmetry is equipped with the sleeve pipe mounting panel with back vent mounting panel matched with, it is intraductal that the cover is located in the drive wheel shaft rotation, its beneficial effect lies in: there is provided a specific structure of a rear fork that allows the rear fork to be connected to a drive wheel.

Among the above-mentioned scheme, it is preferred, be equipped with the motor mounting panel of installation motor on the frame, be equipped with on the motor mounting panel with motor matched with locating hole and a plurality of adjustment tank, its beneficial effect lies in: a mounting plate for a motor is provided to enable the motor to be mounted on a vehicle frame and rotatably adjusted about a positioning block.

In the above scheme, it is preferred, be equipped with on the motor mounting panel with adjustment tank matched with regulating plate, adjustment tank one side be equipped with regulating plate matched with locating lever, be equipped with a plurality of arc recesses with locating lever matched with on the regulating plate, its beneficial effect lies in: an adjusting plate for adjusting the rotation of a motor is provided, so that the distance between the motor and an intermediate transmission part can be finely adjusted.

The utility model has the beneficial effects that: the utility model provides a two-stage speed reducing mechanism of a beach vehicle, which increases the speed reducing ratio, enables the vehicle to have higher torque under the condition of not changing a motor, and greatly improves the running stability of the vehicle and saves the cost by coaxially installing the speed reducing mechanism and a rear fork.

Drawings

Fig. 1 is a schematic perspective view of the present invention.

FIG. 2 is a schematic cross-sectional view of the present invention.

Fig. 3 is a partially enlarged schematic view of the present invention.

FIG. 4 is a schematic view of the rear fork of the present invention.

FIG. 5 is a schematic view of the first driving wheel and the second driving wheel according to the present invention.

FIG. 6 is a partial structural view of the frame of the present invention.

Fig. 7 is a schematic diagram of the structure of the motor mounting plate according to the present invention.

Detailed Description

The utility model is described in further detail below with reference to the following detailed description and accompanying drawings: referring to fig. 1-7, a two-stage speed reduction structure for chain transmission includes a driving wheel 1, a driving wheel shaft 2, a frame 3 and a motor 4, wherein the driving wheel 1 is symmetrically disposed on the driving wheel shaft 2, and the motor 4 is fixedly disposed on the frame 3.

The driving wheel shaft 2 is provided with a sleeve 33, a bearing is arranged between the sleeve 33 and the driving wheel shaft 2, a positioning nut is preferably arranged between two ends of the sleeve 33 and the driving wheel shaft 2 and used for positioning the axial position of the sleeve 33 on the driving wheel shaft 2, namely, the sleeve 33 and the driving wheel shaft 2 can be rotatably connected through the bearing but cannot axially move on the driving wheel shaft 2, and sleeve mounting plates 34 are symmetrically arranged at two ends of the sleeve 33.

Be equipped with the back vent 5 between sleeve pipe 33 and the drive wheel 1, back vent 5 includes back yoke 31 and back vent mounting panel 32, back yoke 31 symmetry is located 5 both sides of back vent, back yoke 31 one end has set firmly commentaries on classics cover 11, and the other end extends to one side of being close to the drive wheel 1 and has set firmly back vent mounting panel 32, pass through bolt fixed connection between back vent mounting panel 32 and sleeve pipe mounting panel 34, when back vent 5 installed on sleeve pipe mounting panel 32, back vent 5 can rotate around drive shaft 2 promptly.

The rotating sleeve 11 is arranged on the symmetrical rear fork arms 31 in a penetrating manner, the rotating sleeve 11 and the rear fork arms 31 are preferably welded and integrally formed, a rotating hole penetrates through the rotating sleeve 11, first bushings 14 are symmetrically arranged at two ends of the rotating sleeve 11, a needle bearing is preferably arranged between the first bushings 14 and the rotating hole, one end of each first bushing 14 is arranged in the corresponding rotating hole and matched with the corresponding needle bearing, the other end of each first bushing extends out of the rotating sleeve 11 and is provided with a limiting boss, and the limiting bosses of the first bushings 14 abut against the end faces of the rotating table 11.

The rotary sleeve 11 is rotatably connected with the frame 3 through a rotary shaft 13, positioning plates 12 which are matched with the rotary shaft 13 and the rotary sleeve 11 are symmetrically arranged on the frame 3, one end of a first bushing 14 which is symmetrically arranged at two ends of the rotary sleeve 11 is matched with the rotary sleeve 11, the other end of the first bushing is abutted against the positioning plates 12, the rotary shaft 13 sequentially penetrates through the positioning plates 12, the first bushing 14 and the rotary sleeve 11 and is fixed with the positioning plate 12 at the other side through nuts, the end part of the rotary shaft 13 is provided with threads which are matched with the nuts, namely, the rear fork 5 is rotatably connected with the frame 3 through the rotary shaft 13, and the rear fork 5 can rotate on the frame 1 around the rotary shaft 13.

One end of the rotating shaft 13 is rotatably provided with an intermediate transmission part matched with the motor 4 and the driving wheel shaft 2, the intermediate transmission part comprises an installation sleeve 23 rotatably arranged on the rotating shaft 13, the installation sleeve 23 is matched with the rotating shaft 13 through a second bushing 24, a needle bearing is preferably arranged between the second bushing 24 and the inner hole wall of the installation sleeve 23, the installation sleeve 23 is arranged between the rotating sleeve 11 and the positioning plate 12 on one side, two ends of the second bushing 24 are respectively abutted against the first bushing 14 and the positioning plate 12, namely, the installation sleeve 23 is rotatably arranged on the rotating shaft 13, as shown in fig. 3, the rotating shaft 13 sequentially penetrates through the positioning plate 12, the first bushing 14, the rotating sleeve 11, the second bushing 24 and the installation sleeve 23 from left to right, and then penetrates through the positioning plate 12 on the other side.

A first driving wheel 21 and a second driving wheel 22 are fixedly arranged on the mounting sleeve 23, namely, the first driving wheel 21 and the second driving wheel 22 rotate synchronously, a third driving wheel 25 is fixedly arranged on the motor 4, a fourth driving wheel 26 is fixedly arranged on one side of the driving wheel shaft 2 close to the motor 4, the first driving wheel 21 is connected with the third driving wheel 25 through a first driving belt 27, the second driving wheel 22 is connected with the fourth driving wheel 26 through a second driving belt 28, namely, the power on the motor 4 is firstly transmitted to the first driving wheel 21 through the third driving wheel 25, the first driving wheel 21 drives the mounting sleeve 23 and the second driving wheel 22 to rotate synchronously on the rotating shaft 13 at any time, the second driving wheel 22 transmits the power to the driving wheel shaft 2 through the second driving belt 28, the driving wheel shaft 2 drives the driving wheel 1 to rotate so as to drive the vehicle to run, and the driving wheels and the driving belts are preferably chain-driven, synchronous belt drive can also be selected.

The first driving wheel 21 and the second driving wheel 22 are both mounted on the rotating shaft 13 through the mounting sleeve 23, when the rear fork 5 rotates on the frame 3 through the rotating shaft 13, the distance from the rotating shaft 13 to the driving wheel shaft 2 is always unchanged, that is, the second driving belt 28 always keeps the same state during rotation, so that the tensioning state does not need to be adjusted again after the tightness of the second driving belt 28 is adjusted at the initial position, and the tensioning mechanism is saved.

The frame 3 is provided with a motor mounting plate 41 for mounting the motor 4, the motor mounting plate 41 is provided with a positioning hole 42 matched with the motor 4 and a plurality of adjusting grooves 43, the adjusting grooves 43 are arc-shaped groove bodies arranged around the circumference of the positioning block 42, namely, mounting bolts on the motor 4 can slide in the adjusting grooves 43 around the positioning hole 42 and are used for adjusting the distance between the first driving wheel 21 and the third driving wheel 25, namely, the tightness state of the first driving belt 27.

Preferably, motor 4 goes up 4 mounting bolts, and one of them is installed on locating piece 42, preferably be equipped with on the motor mounting panel 41 with motor 4 go up all the other three mounting bolt matched with three adjustment tank 43, wherein be equipped with on arbitrary adjustment tank 43 with it matched with regulating plate 44, mounting bolt wears to establish regulating plate 44 and makes it be fixed in on adjustment tank 43, regulating tank 43 one side is equipped with regulating plate 44 matched with locating lever 45, the outer fringe of regulating plate 44 is the vortex line of gradual outward diffusion, be equipped with a plurality of arc recesses 46 on the vortex line, arc recess 46 is the arc groove with locating lever 45 matched with, be equipped with the driving lever on the regulating plate 44, when regulating plate 44 rotates around mounting bolt, the arc recess 46 in the outer fringe of regulating plate 44 cooperatees with locating lever 45, because the outer fringe of regulating plate 44 is the vortex line, can make locating lever 45 and mounting bolt interval from producing the change after its rotation, the positioning rod 45 is fixed to the motor mounting plate 41, so that when the adjustment plate 44 is rotated, the mounting bolt slides in the adjustment groove 43, thereby adjusting the distance between the motor 4 and the intermediate transmission part.

The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. The utility model provides a second grade speed reduction structure for chain drive, includes drive wheel (1), drive wheel axle (2), frame (3) and motor (4), its characterized in that: be equipped with between frame (3) and drive wheel (1) and cooperate pivoted back fork (5) with frame (3), be equipped with rotation portion between frame (3) and back fork (5), be equipped with in the rotation portion with motor (4) and drive wheel (1) matched with middle transmission portion for on transmitting the power of motor (4) to drive wheel (1).

2. A two-stage reduction structure for a chain drive according to claim 1, wherein: the rotating part comprises a rotating sleeve (11) arranged on the rear fork (5) and a positioning plate (12) arranged on the frame (3), and a rotating shaft (13) penetrates between the rotating sleeve (11) and the positioning plate (12).

3. A two-stage reduction structure for a chain drive according to claim 2, wherein: a first bushing (14) is arranged between the rotating shaft (13) and the rotating sleeve (11).

4. A two-stage reduction structure for a chain drive according to claim 3, wherein: the middle transmission part is arranged at one end of the rotating shaft (13), the middle transmission part comprises a first transmission wheel (21) matched with the motor (4), a second transmission wheel (22) matched with the driving wheel (1) and an installation sleeve (23), and the first transmission wheel (21) and the second transmission wheel (22) are arranged on the installation sleeve (23).

5. A two-stage reduction structure for a chain drive according to claim 4, wherein: the mounting sleeve (23) is arranged on the rotating shaft (13), a second bushing (24) is arranged between the mounting sleeve (23) and the rotating shaft (13), and two ends of the second bushing (24) are respectively abutted against the first bushing (14) and the positioning plate (12).

6. A two-stage reduction structure for a chain drive according to claim 4, wherein: the motor (4) is provided with a third driving wheel (25) matched with the first driving wheel (21), the driving wheel shaft (2) is provided with a fourth driving wheel (26) matched with the second driving wheel (22), a first driving belt (27) is arranged between the first driving wheel (21) and the third driving wheel (25), and a second driving belt (28) is arranged between the second driving wheel (22) and the fourth driving wheel (26).

7. A two-stage reduction structure for a chain drive according to claim 2, wherein: the rear fork (5) comprises a rear fork arm (31) and a rotating sleeve (11) arranged at one end of the rear fork arm (31), and the rear fork arm (31) extends to one side close to the driving wheel (1) to be provided with a rear fork mounting plate (32).

8. A two-stage reduction structure for a chain drive according to claim 7, wherein: the driving wheel shaft (2) is provided with a sleeve (33) matched with the rear fork (5), sleeve mounting plates (34) matched with the rear fork mounting plates (32) are symmetrically arranged at two ends of the sleeve (33), and the driving wheel shaft (2) is rotatably arranged in the sleeve (33).

9. A two-stage reduction structure for a chain drive according to claim 1, wherein: the frame (3) is provided with a motor mounting plate (41) for mounting the motor (4), and the motor mounting plate (41) is provided with a positioning hole (42) matched with the motor (4) and a plurality of adjusting grooves (43).

10. A two-stage reduction structure for a chain drive according to claim 9, wherein: be equipped with on motor mounting panel (41) with adjustment tank (43) matched with regulating plate (44), adjustment tank (43) one side is equipped with and adjusts plate (44) matched with locating lever (45), be equipped with a plurality of and locating lever (45) matched with arc recess (46) on regulating plate (44).