CN210970678U

CN210970678U - Electric pallet truck driving wheel assembly

Info

Publication number: CN210970678U
Application number: CN201921150957.9U
Authority: CN
Inventors: 熊加刚
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-07-22
Filing date: 2019-07-22
Publication date: 2020-07-10
Anticipated expiration: 2029-07-22

Abstract

The utility model discloses an electric pallet truck drive wheel assembly belongs to electric pallet truck technical field. The utility model discloses a drive wheel assembly, including the mount pad, install the wheel on the support arm about the mount pad, install the gear reduction on support arm of mount pad one side, install motor and electromagnetic braking ware on mount pad opposite side support arm, the output shaft of motor passes the mount pad about the support arm be connected with gear reduction's input shaft, gear reduction's output shaft is connected with the wheel shaft, electromagnetic braking ware is fixed in on gear reduction's the box to extend the end with gear reduction's input shaft and cooperate. The utility model discloses a motor side dress structure utilizes gear reducer to replace chain drive to extend the end cooperation with electromagnetic braking ware and gear reducer's input shaft and be connected, simple structure is compact, and the transmission is steady reliable, long service life, and the noise of operation is low, and the electromagnetic braking ware's of being convenient for installation more has improved electric truck's safety in utilization.

Description

Electric pallet truck driving wheel assembly

Technical Field

The utility model relates to an electric pallet truck, more specifically say, relate to an electric pallet truck drive wheel assembly.

Background

The electric porter has the characteristics of small turning radius, easy operation and the like. With the continuous expansion of the application field of the electric truck, the electric truck is adopted by most users as a medium-distance and long-distance material transfer device, and is widely applied to places such as logistics storage, workshops, goods yards, shops, supermarkets and the like.

The driving assembly of the existing electric truck is usually provided with a motor which is arranged on the inner side, and the motor usually adopts a small-power motor with small volume so as not to influence the turning of the truck, so that the driving power of the truck is difficult to improve. The existing electric truck also has a drive assembly of a side-mounted motor, the drive assembly of the side-mounted motor comprises a mounting seat used for being mounted at the bottom of the truck and wheels mounted on the mounting seat, the motor is arranged on the side surface of the mounting seat, the motor is in transmission connection with the wheels through a chain wheel and chain mechanism, the transmission noise of the chain wheel and chain mechanism is large, and the service life is short.

Based on the above problems, the chinese patent No. Z L201820564796.7, entitled date of issue is 2018, 11/27, the invention provides a drive assembly of an electric truck, which relates to a drive assembly of an electric truck, including a drive motor, a housing, a driven shaft, a reduction gear set and a brake, wherein the reduction gear set includes a first driving gear, a driven gear and a second driving gear, the driven shaft is rotatably mounted on the left side of the housing through a first bearing and a second bearing, a bearing mounting seat is formed on the surface of the left side of the housing, the axis of the bearing mounting seat is parallel to the axis of the drive motor, the first bearing and the second bearing are fixed in the bearing mounting seat side by side, the driven gear is fixed on the driven shaft, and the driven gear is located on the left side of the bearing seat.

SUMMERY OF THE UTILITY MODEL

1. Technical problem to be solved by the utility model

The utility model aims to overcome current electric pallet truck's drive assembly has that the structure is complicated, life is short and be not convenient for install electromagnetic brake etc. not enough, provides an electric pallet truck drive wheel assembly, adopts the technical scheme of the utility model, adopt motor side dress structure, utilize gear reducer to replace chain drive to extend the end cooperation with electromagnetic brake and gear reducer's input shaft and be connected, the structure is simple more compact, and power transmission is steady reliable, long service life, and the noise of operation is low, and the electromagnetic brake's of being convenient for installation more has improved electric pallet truck's safety in utilization.

2. Technical scheme

In order to achieve the above purpose, the utility model provides a technical scheme does:

the utility model discloses an electric pallet truck drive wheel assembly, including the mount pad, install wheel on the support arm about the mount pad, install gear reducer on mount pad one side support arm, install motor on mount pad opposite side support arm and install the electromagnetic braking ware on gear reducer, the output shaft of motor pass the mount pad about the support arm be connected with gear reducer's input shaft, gear reducer's output shaft be connected with the truckle axle, electromagnetic braking ware be fixed in gear reducer's box on to extend the end with gear reducer's input shaft and cooperate mutually.

Further, an output shaft of the motor is in transmission connection with an input shaft of the gear reducer through a spline shaft.

Furthermore, the mounting seat is of an integral casting structure, and a mounting hole is formed in the top of the mounting seat.

Furthermore, the gear reducer comprises a box body, an input shaft gear, a first duplicate gear, a second duplicate gear, an output shaft gear and an output shaft, wherein the box body is fixed on a support arm at one side of the mounting seat, the input shaft, a wheel shaft of the first duplicate gear, a wheel shaft of the second duplicate gear and the output shaft are respectively mounted in the box body through bearings, the input shaft gear is mounted on the input shaft, the input shaft gear is meshed with a large gear of the first duplicate gear, a small gear of the first duplicate gear is meshed with a large gear of the second duplicate gear, a small gear of the second duplicate gear is meshed with the output shaft gear, and the output shaft gear is mounted on the output shaft.

Furthermore, the input shaft gear, the first duplicate gear, the second duplicate gear and the output shaft gear are all helical gears.

Furthermore, the wheel is formed by compounding an inner metal wheel and an outer rubber wheel.

3. Advantageous effects

Adopt the technical scheme provided by the utility model, compare with existing well-known technique, have following beneficial effect:

(1) the utility model discloses an electric truck drive wheel assembly, it adopts the motor side dress structure, utilizes gear reducer to replace chain drive to and the electromagnetic braking ware is connected with the input shaft extension end cooperation of gear reducer, and the structure is more simple compact, and power transmission is steady reliable, long service life, and the running noise is low, is more convenient for electromagnetic braking ware's installation, has improved electric truck's safety in utilization;

(2) the utility model discloses an electric carrier drive wheel assembly, the output shaft of its motor passes through the integral key shaft and is connected with the input shaft transmission of gear reducer, convenient assembling, and the moment of torsion bearing capacity is strong;

(3) the driving wheel assembly of the electric carrier has the advantages that the mounting seat is of an integrally cast structure, the structural strength is high, and the higher bearing capacity requirement of the carrier is met;

(4) the utility model discloses a driving wheel assembly of an electric carrier, the gear reducer of which adopts a three-level speed reducing mechanism, can transmit larger torque and has strong transmission stability;

(5) the utility model discloses a driving wheel assembly of an electric carrier, the gear reducer of which adopts a bevel gear speed reducing mechanism, the transmission is stable, and the impact, the vibration and the noise are small;

(6) the utility model discloses an electric pallet truck drive wheel assembly, its wheel is formed by interior metal wheel and outer rubber wheel complex, has both guaranteed the bearing capacity of wheel, has improved the land fertility of grabbing and the shock attenuation performance of wheel again.

Drawings

Fig. 1 is a schematic perspective view of an angle of a driving wheel assembly of an electric truck according to the present invention;

fig. 2 is a schematic perspective view of another angle of the driving wheel assembly of the electric truck according to the present invention;

fig. 3 is a schematic diagram of an internal structure of a gear reducer in a driving wheel assembly of an electric truck according to the present invention;

fig. 4 is a schematic internal plan view of a gear reducer in a drive wheel assembly of an electric truck according to the present invention.

The reference numerals in the schematic drawings illustrate:

1. a mounting seat; 1-1, mounting holes; 2. a wheel; 3. a motor; 3-1, spline shafts; 4. a gear reducer; 4-1, a box body; 4-2, an input shaft; 4-3, an input shaft gear; 4-4, a first duplicate gear; 4-5, a second duplicate gear; 4-6, output shaft gear; 4-7, output shaft; 5. an electromagnetic brake.

Detailed Description

For a further understanding of the present invention, reference will be made to the following detailed description taken in conjunction with the accompanying drawings and examples.

Examples

Referring to fig. 1 to 4, the driving wheel assembly of an electric truck of the present embodiment includes a mounting base 1, wheels 2 mounted on left and right arms of the mounting base 1, a gear reducer 4 mounted on one arm of the mounting base 1, a motor 3 mounted on the other arm of the mounting base 1, and an electromagnetic brake 5 mounted on the gear reducer 4, where the mounting base 1 is an integral structure, preferably an integrally cast structure, and has high structural strength, so as to meet the requirement of the truck for higher carrying capacity, a mounting hole 1-1 is formed in the top of the mounting base 1, and the cross-sectional shape of the mounting hole 1-1 is preferably an oblong circle, so as to facilitate the mounting of the driving wheel assembly on the truck, and to facilitate the control of the steering of the electric truck; the front end cover of the motor 3 is fixed on one side of the mounting seat 1 through bolts, the output shaft of the motor 3 passes through the left and right support arms of the mounting seat 1 and is connected with the input shaft 4-2 of the gear reducer 4, the output shaft 4-7 of the gear reducer 4 is connected with the wheel shaft of the wheel 2, the torque of the motor 3 is transmitted to the wheel 2 through the gear reducer 4, and the rotating speed is reduced and the torque is increased through the gear reducer 4; because the motor 3 adopts a side-mounted structure and can adopt a high-power motor, the structure is simpler and more compact, and the power of the driving wheel assembly of the electric truck is improved; the gear reducer is adopted to replace the traditional chain transmission mechanism, so that the transmission is more stable and reliable, the transmission efficiency is higher, and the operation noise is low. The electromagnetic brake 5 is fixed on the box body 4-1 of the gear reducer 4 and is matched with the extending end of the input shaft 4-2 of the gear reducer 4, the electromagnetic brake 5 is directly arranged on the box body 4-1 of the gear reducer 4, the installation is simple and convenient, and the electromagnetic brake can be combined with or disconnected from the input shaft 4-2 of the gear reducer 4, so that the brake function of the driving wheel assembly of the electric truck is realized. The electromagnetic brake 5 is a product sold on the market at present, has the advantages of compact structure, simple operation, sensitive response, long service life, reliable use, easy realization of remote control and the like, and improves the use safety of the electric truck.

As shown in fig. 1, in this embodiment, the output shaft of the motor 3 is in transmission connection with the input shaft 4-2 of the gear reducer 4 through a spline shaft, and the spline shaft is in transmission connection, so that the assembly is convenient, and the torque bearing capacity is strong. The wheel 2 is formed by compounding an inner metal wheel and an outer rubber wheel, and the outer rubber wheel is arranged on the outer side of the inner metal wheel, so that the bearing capacity of the wheel is ensured, and the ground gripping force and the shock absorption performance of the wheel are improved. Referring to fig. 3 and 4, in this embodiment, the gear reducer 4 includes a case 4-1, an input shaft 4-2, an input shaft gear 4-3, a first duplicate gear 4-4, a second duplicate gear 4-5, an output shaft gear 4-6 and an output shaft 4-7, the case 4-1 is fixed on a side arm of the mounting base 1, the case 4-1 may be composed of a fixing portion and an end cover, the fixing portion may be integrally formed with the mounting base 1, the end cover and the fixing portion are fixedly connected by bolts to form a reduction case cavity, the input shaft 4-2, a wheel axle of the first duplicate gear 4-4, a wheel axle of the second duplicate gear 4-5 and the output shaft 4-7 are respectively mounted in the case 4-1 by bearings, the input shaft gear 4-3 is mounted on the input shaft 4-2, and the input shaft gear 4-3 is meshed with the large gear of the first duplicate gear 4-4, the small gear of the first duplicate gear 4-4 is meshed with the large gear of the second duplicate gear 4-5, the small gear of the second duplicate gear 4-5 is meshed with the output shaft gear 4-6, the output shaft gear 4-6 is mounted on the output shaft 4-7, so that a three-stage speed reducing mechanism is formed, larger torque can be transmitted, and the transmission stability is strong. In the embodiment, the gear reducer 4 preferably adopts a helical gear reduction mechanism, namely, the input shaft gear 4-3, the first duplicate gear 4-4, the second duplicate gear 4-5 and the output shaft gear 4-6 are all helical gears, so that the transmission is smooth, and the impact, vibration and noise are small.

According to the driving wheel assembly of the electric truck, the motor 3 is arranged on the side face of the mounting seat 1, namely the axis of the output shaft of the motor 3 is parallel to the linear direction of the wheel shaft of the wheel 2, and the gear reducer 4 is arranged on the opposite side of the motor 3, so that the driving wheel assembly is simple and compact in structure, stable and reliable in transmission and low in noise, and cannot cause interference on the steering of the truck; in addition, the electromagnetic brake 5 is arranged on the side wall of the box body 4-1 of the gear reducer 4 and is coaxially matched with the motor 3, so that the electromagnetic brake 5 is convenient to install, the torque of the motor 3 borne by the electromagnetic brake 5 can be reduced, the impact of braking of a driving wheel of the electric truck is reduced, and the service life of the electromagnetic brake 5 is prolonged.

To sum up, the utility model discloses an electric pallet truck drive wheel assembly adopts the motor side dress structure, utilizes gear reducer to replace chain drive to extend the end cooperation with electromagnetic braking ware and gear reducer's input shaft and be connected, the structure is simple compact more, and power transmission is steady reliable, long service life, and the noise at operation is low, and the installation of the electromagnetic braking ware of being convenient for more has improved electric pallet truck's safety in utilization.

The present invention and its embodiments have been described above schematically, and the description is not intended to be limiting, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching of the present invention, without creatively designing the similar structural modes and embodiments to the technical solutions, they should belong to the protection scope of the present invention.

Claims

1. The utility model provides an electric pallet truck drive wheel assembly, includes mount pad (1), installs wheel (2) on support arm about mount pad (1), installs gear reducer (4) on support arm of mount pad (1) one side, installs motor (3) on support arm of mount pad (1) opposite side and installs electromagnetic braking ware (5) on gear reducer (4), its characterized in that: an output shaft of the motor (3) penetrates through left and right support arms of the mounting base (1) to be connected with an input shaft (4-2) of the gear reducer (4), an output shaft (4-7) of the gear reducer (4) is connected with a wheel shaft of the wheel (2), and the electromagnetic brake (5) is fixed on a box body (4-1) of the gear reducer (4) and matched with an extending end of the input shaft (4-2) of the gear reducer (4).

2. The electric cart drive wheel assembly of claim 1, wherein: the output shaft of the motor (3) is in transmission connection with the input shaft (4-2) of the gear reducer (4) through a spline shaft.

3. The electric cart drive wheel assembly of claim 1, wherein: the mounting seat (1) is of an integral casting structure, and mounting holes (1-1) are formed in the top of the mounting seat (1).

4. The electric cart drive wheel assembly of claim 1, 2 or 3, wherein: the gear reducer (4) comprises a box body (4-1), an input shaft (4-2), an input shaft gear (4-3), a first duplicate gear (4-4), a second duplicate gear (4-5), an output shaft gear (4-6) and an output shaft (4-7), wherein the box body (4-1) is fixed on a support arm at one side of the mounting seat (1), the input shaft (4-2), a wheel axle of the first duplicate gear (4-4), a wheel axle of the second duplicate gear (4-5) and the output shaft (4-7) are respectively installed in the box body (4-1) through bearings, the input shaft gear (4-3) is installed on the input shaft (4-2), and the input shaft gear (4-3) is meshed with a large gear of the first duplicate gear (4-4), the small gear of the first duplicate gear (4-4) is meshed with the large gear of the second duplicate gear (4-5), the small gear of the second duplicate gear (4-5) is meshed with the output shaft gear (4-6), and the output shaft gear (4-6) is installed on the output shaft (4-7).

5. The electric cart drive wheel assembly of claim 4, wherein: the input shaft gear (4-3), the first duplicate gear (4-4), the second duplicate gear (4-5) and the output shaft gear (4-6) are all helical gears.

6. The electric cart drive wheel assembly of claim 1, wherein: the wheel (2) is formed by compounding an inner metal wheel and an outer rubber wheel.