CN213895099U - Large-tonnage forklift transmission device and large-tonnage forklift thereof - Google Patents

Abstract

The utility model provides a large-tonnage fork truck transmission and large-tonnage fork truck thereof, including driving motor and transaxle, driving motor with install the stopper between the transaxle, driving motor's output shaft with connect through the spline housing between the drive shaft of transaxle. This application is applied to the fork truck trade with the spline housing, through spline housing lug connection transaxle and driving motor's transmission mode, simple structure, the overall arrangement is compact, has reduced the transaxle noise, has improved transmission efficiency, has promoted the travelling comfort that the driver drove, reduces energy loss, prolongs the life of vehicle. The utility model provides a large-tonnage fork truck with large-tonnage fork truck transmission, compact appearance, the stable performance is reliable, and the noise is low, long service life.

Description

Large-tonnage forklift transmission device and large-tonnage forklift thereof

Technical Field

The utility model relates to a fork truck transmission equipment installs technical field, and more specifically says, relates to a large-tonnage fork truck transmission. The utility model discloses still relate to a large-tonnage fork truck including above-mentioned large-tonnage fork truck transmission.

Background

At present, large-tonnage fork truck on the market generally adopts the mounting structure of driving motor + universal joint + gearbox, vacancy installation error appears after having the frame welding because of having, driving motor mounted position deviation differs and the universal joint is connected the poor scheduling problem of flexibility, hardly guarantee the axiality between driving motor and gearbox, and there is certain mechanical friction between the two, the noise is huge when serious, and along with the speed of a motor high noise is big more, long-term wearing and tearing are to the transaxle, driving motor all will cause the damage, not only has increased cost of maintenance, and user operation experience has been influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a large-tonnage fork truck transmission has solved traditional large-tonnage fork truck transaxle abnormal sound problem effectively, has improved the noise, and compact structure has significantly promoted fork truck's transmission efficiency and load-carrying capacity, has reduced manufacturing cost and cost of maintenance. Another object of the utility model is to provide a large-tonnage fork truck of including above-mentioned large-tonnage fork truck transmission, have above-mentioned technical advantage.

The utility model provides a large-tonnage fork truck transmission, including driving motor and transaxle, driving motor with install the stopper between the transaxle, driving motor's output shaft with connect through the spline housing between the drive shaft of transaxle.

Preferably, the brake is embodied as a drum brake.

Preferably, the brake is mounted on the drive axle and the drive motor through a support and a bolt assembly, and the support surrounds an output shaft of the drive motor and an input shaft of the drive axle.

Preferably, the driving motor is mounted on the mounting hole of the frame through a shock absorber.

Preferably, the shock absorbing member includes an upper cushion rubber pad, a lower cushion rubber pad, an upper pad and a middle upper pad distributed on the top and the bottom of the upper cushion rubber pad, a middle lower pad distributed on the top of the lower cushion rubber pad, and a screw and a lock nut penetrating through the upper pad, the upper cushion rubber pad, the middle upper pad, the middle lower pad and the lower cushion rubber pad.

Preferably, the number of the shock absorbing members is two, and the shock absorbing members are symmetrically distributed on two sides of the driving motor.

Preferably, the input shaft of the drive axle is connected with the first end of a joint disc through a bearing, the second end of the joint disc is connected with the spline sleeve, and the brake is installed on the joint disc.

The utility model also provides a large-tonnage fork truck, including transmission, transmission specifically is above-mentioned arbitrary large-tonnage fork truck transmission.

Compared with the prior art, the utility model provides a large-tonnage fork truck transmission has cancelled traditional universal joint, adopt the spline housing to realize the transaxle, the stopper, driving motor's lug connection, the axiality required precision has been guaranteed, transmission efficiency is improved, mechanical loss has been reduced, the noise reduction, install the output at the motor with parking brake integration, make full use of transmission speed ratio, the stopper size has been reduced, the structure is simpler, the overall arrangement is compacter, and can adapt to in all kinds of fork trucks, therefore, the commonality is strong, production and use cost have been reduced effectively. The utility model also provides a large-tonnage fork truck of including above-mentioned large-tonnage fork truck transmission, its stable performance is reliable, has reduced the maintenance frequency, has prolonged life with showing.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

Fig. 1 is a schematic view of a large-tonnage forklift transmission provided by the present invention;

fig. 2 is a partial cross-sectional view of the large-tonnage forklift transmission provided by the present invention;

fig. 3 is a schematic view of a shock absorbing member according to an embodiment of the present invention.

Wherein, 1-drive axle, 2-drive motor, 3-brake, 4-spline housing, 5-shock absorber, 6-interface disc;

51-upper gasket, 52-upper cushion rubber pad, 53-middle upper gasket, 54-lower cushion rubber pad, 55-middle lower gasket, 56-screw, 57-lock nut and 58-connecting piece.

Detailed Description

The core of the utility model is to provide a large-tonnage fork truck transmission reduces the transaxle noise with showing, improves transmission efficiency, promotes the travelling comfort that the driver drove. The utility model discloses an another core provides a large-tonnage fork truck including above-mentioned large-tonnage fork truck transmission, has large-tonnage fork truck transmission's technical advantage.

It should be noted that the terms "up, down, left, and right" directions as used herein refer to up, down, left, and right directions in fig. 1. All directional terms used herein are based on the common usage of those skilled in the art and the accompanying drawings of the specification, and their presence should not affect the scope of the present invention.

In order to make the technical field of the present invention better understand, the present invention will be described in detail with reference to the accompanying drawings and the detailed description.

Referring to fig. 1 to 3, fig. 1 is a schematic view of a large-tonnage forklift transmission device provided by the present invention; fig. 2 is a partial cross-sectional view of the large-tonnage forklift transmission provided by the present invention; fig. 3 is a schematic view of a shock absorbing member according to an embodiment of the present invention.

The utility model provides a large-tonnage fork truck transmission, including driving motor 2 and transaxle 1, be equipped with stopper 3 between driving motor 2 and the transaxle 1, be connected through spline housing 4 between driving motor 2's the output shaft and the drive shaft of transaxle 1, specifically, spline housing 4 connects handle dish 6, and handle dish 6 and drive shaft are connected.

The application provides a large-tonnage fork truck transmission, mechanical connection between driving motor 2 and transaxle 1 has been optimized, connect traditional universal joint to improve and connect for spline housing 4, utilize the high performance of the 4 axialities of finish machining spline housing, the radial force has been reduced, the axiality deviation of having avoided traditional universal joint to connect the existence and the noise that produces because of mechanical wear, transmission efficiency is improved, the whole car performance has been promoted, the part quantity has been reduced simultaneously, easy to assemble and dismantlement, assembly efficiency is improved. In addition, the spline housing 4 and the brake 3 are easy to disassemble and replace, fast and convenient, and the problem of poor braking effect caused by long-time operation can be avoided.

Specifically, the large-tonnage fork truck transmission device provided by the application ensures that the coaxiality between the driving motor 2 and the driving axle 1 is guaranteed by the spline housing 4 with good coaxiality through precision machining, and overcomes the defects of low transmission efficiency, high transmission noise and the like of the traditional universal joint transmission. Practical test shows that the large-tonnage forklift transmission device provided by the application is adopted, so that ear noise of a driver is reduced from 80dB to 78dB, the standard of external radiation noise of the forklift is completely met, and the comfort and the operation experience of a user are greatly improved. In addition, transaxle 1 and driving motor 2 overall arrangement are compacter reasonable, and driving motor 2 direct mount can in the installation hole site of original frame, and simple to operate need not to change the mounting structure of frame and/or transaxle 1, replaces the universal joint intermediate drive, and transmission efficiency is higher, reduce cost.

In a particular embodiment, the brake 3 is embodied as a drum brake 3. Compare in traditional caliper disc brake 3, drum brake 3's noise effect shows through actual test, and noise reduction effect is showing, can reduce the noise to the within range that accords with external radiation noise standard, has greatly improved user's comfort and operation experience and feels to the cost is lower.

The traditional drive axle is composed of a bridge body, a wheel-side brake, a parking brake, a flange and the like, wherein the parking brake of the part, connected with a universal joint, of a flange surface depends on a caliper disc brake, the area of brake contact is small, and a vehicle can be parked on a road surface or a slope by a large braking torque.

In this embodiment, the transaxle 1 adopts a central axle-hung type braking manner, so that the required braking torque is small, the braking effect is good, and compared with the conventional caliper brake 3, the cost is further reduced. Regarding the installation manner of the drum brake 3, the drum brake 3 is fixedly installed on the transaxle 1 and the driving motor 2 through a bracket and bolt assembly.

In order to effectively protect the driving motor 2, the driving axle 1 and the driving motor 2 are connected with the frame in a damping way. Particularly, the driving motor 2 can be mounted at the mounting hole of the frame through the shock absorbing part 5, so that the mounting hole of the driving motor 2 on the frame is changed without changing the original frame, the model of the driving motor 2 and the mounting mode of the drive axle 1, the production cost is saved, and the assembly efficiency is improved.

In one embodiment, the damping member 5 includes an upper cushion rubber pad 52, a lower cushion rubber pad 54, an upper pad 51 and a middle upper pad 53 distributed on the top and the bottom of the upper cushion rubber pad 52, a middle lower pad 55 distributed on the top of the lower cushion rubber pad 54, a screw 56 and a locking nut 57, the screw 56 sequentially penetrates through the upper pad 51, the upper cushion rubber pad 52, the middle upper pad 53, the middle lower pad 55 and the lower cushion rubber pad 54, the middle upper pad 53 and the middle lower pad 55 are respectively arranged on the upper surface and the lower surface of the connecting member 58, and the driving motor 2 is locked and fixed on the frame by the locking nut 57.

Preferably, the number of the shock absorbing members 5 is two, and the shock absorbing members are symmetrically distributed on both sides of the driving motor 2, but the number is not limited thereto, and a plurality of shock absorbing members may be provided according to actual needs.

This application adopts new-type transaxle structure: firstly, the drum brake is adopted, and is different from a traditional caliper disc brake, so that the braking torque is smaller, and the braking effect is better; secondly, an input shaft of the drive axle 1 is connected with a first end of a handle disc through a bearing, a second end of the handle disc is connected with a spline sleeve 4, the handle disc is connected with the drive axle and the spline sleeve 4, a brake 3 is installed on the handle disc, the spline sleeve 4 is utilized to transmit motor torque, and a mode of connecting a universal joint to a flange plate through a bolt to transmit the motor torque is replaced, so that the structure is more compact, and the transmission efficiency is higher; thirdly, the support adopts the mounting means that surrounds 2 output shafts of driving motor and 1 input shaft of transaxle, and driving motor 2 is connected to the support, and the support is fixed on stopper 3, can prevent the dust, and the foreign matter falls into, guarantees clean degree.

In addition, the utility model also provides a large-tonnage fork truck, including above-mentioned large-tonnage fork truck transmission, owing to have above-mentioned large-tonnage fork truck transmission, reduced large-tonnage fork truck's overall dimension, promoted its transmission precision and transmission efficiency, noise reduction remarkably.

To sum up, compare in traditional transaxle, the utility model discloses a transaxle is unanimous basically with traditional transaxle main part, however the utility model discloses creatively adopts drum brake, and drum brake cost is lower, and braking torque is littleer, and braking effect is also better. Although the utility model discloses drum brake transaxle overall dimension slightly is greater than traditional caliper brake transaxle, but because of having cancelled the universal joint, has reduced whole transmission's vertical size, and transmission efficiency is higher, and the structure is compacter.

Meanwhile, the utility model provides a drive axle, not only adopt the structure of spline housing replacement universal joint, the support is located between driving motor and the stopper, surround the design of spline housing entirely, need not worry because of the dust, muddy water, the rubble, iron fillings etc. construct the influence to the motor, only need regularly maintain lubricating grease can, the maintenance is convenient, corresponding ground with it, if adopt the universal joint connected mode, the universal joint exposes completely between body frame, must be covered with the dust after the long-term work, muddy water in serious time, the rubble, iron fillings etc. can influence the rotation and the transmission of universal joint, if the great object of intensity has been gone into to the card, then will influence gear or driving motor operation. And the utility model discloses better assurance cleanliness between transmission part (transaxle input shaft, spline housing, driving motor output shaft), reduce the noise of traditional fork truck ubiquitous from the aspect of cleanliness, the effect is showing.

It is noted that, in this specification, relational terms such as first and second, and the like are used solely to distinguish one entity from another entity without necessarily requiring or implying any actual such relationship or order between such entities.

It is right above that the utility model provides a large-tonnage fork truck transmission and large-tonnage fork truck thereof have carried out detailed introduction. The principles and embodiments of the present invention have been explained herein using specific examples, and the above descriptions of the embodiments are only used to help understand the method and its core ideas of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.

Claims (8)

1. The utility model provides a large-tonnage fork truck transmission, includes driving motor (2) and transaxle (1), its characterized in that, driving motor (2) with install stopper (3) between transaxle (1), the output shaft of driving motor (2) with connect through spline housing (4) between the drive shaft of transaxle (1).

2. A large tonnage forklift drive as per claim 1, characterized in that said brake (3) is embodied as a drum brake (3).

3. A large tonnage forklift truck transmission as per claim 2, characterized in that the brake (3) is mounted on the transaxle (1) and the drive motor (2) by means of a bearing and bolt assembly, the bearing surrounding the output shaft of the drive motor (2) and the input shaft of the transaxle (1).

4. The transmission device of the large-tonnage forklift truck as recited in any one of claims 1 to 3, wherein the drive motor (2) is mounted at a mounting hole of the truck frame through a damper (5).

5. The transmission device of large-tonnage forklift truck according to claim 4, wherein the shock absorbing member (5) comprises an upper cushion rubber pad (52), a lower cushion rubber pad (54), an upper gasket (51) and a middle upper gasket (53) distributed on the top and bottom of the upper cushion rubber pad (52), a middle lower gasket (55) distributed on the top of the lower cushion rubber pad (54), and a screw rod (56) and a lock nut (57) penetrating the upper gasket (51), the upper cushion rubber pad (52), the middle upper gasket (53), the middle lower gasket (55) and the lower cushion rubber pad (54).

6. The transmission of large tonnage forklift trucks according to claim 5, characterized in that said shock absorbers (5) are two and are symmetrically distributed on both sides of said driving motor (2).

7. A large tonnage forklift transmission as per any of claims 1-3, characterized in that the input shaft of the drive axle (1) is connected to the first end of the interface disc through a bearing, the second end of the interface disc is connected to the spline housing (4), and the brake (3) is mounted on the interface disc.

8. A large-tonnage forklift comprises a transmission device, and is characterized in that the transmission device is the large-tonnage forklift transmission device as claimed in any one of claims 1 to 7.

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