CN211032156U

CN211032156U - Transmission device of forklift transmission

Info

Publication number: CN211032156U
Application number: CN201921344316.7U
Authority: CN
Inventors: 张�杰; 陈仕胜; 马庆丰; 候可为; 胡祝田; 田原; 王彦博; 袁媛
Original assignee: Anhui Heli Co Ltd
Current assignee: Anhui Heli Co Ltd
Priority date: 2019-08-19
Filing date: 2019-08-19
Publication date: 2020-07-17
Anticipated expiration: 2029-08-19

Abstract

The utility model discloses a forklift transmission device, which comprises an engine and a transmission fixedly connected with the engine, wherein the output end of the engine is in power connection with the input end of the transmission, and is characterized in that one end of the transmission far away from the engine is fixedly connected with a generator, the input end of the generator is in power connection with the output end of the engine through a transmission shaft, and a torque limiter is arranged between the input end of the generator and the transmission shaft, so that a relative angular motion is generated when the torque transmitted between the transmission shaft and the motor is greater than the maximum transmission torque of the torque limiter in the engine starting and stopping stage and the engine rapid acceleration and rapid deceleration through a flexible transmission function of torque limitation, and the instantaneous torque impact on the transmission shaft in the transmission process can be effectively eliminated, the safety performance of the transmission device is improved.

Description

Transmission device of forklift transmission

Technical Field

The utility model relates to a fork truck transmission technical field specifically is a fork truck derailleur transmission.

Background

The original hybrid forklift is provided with a generator at P1 for increasing the active power generation function, and in the mechanical structure, the mechanical power of the engine is transmitted to the generator through an elongated transmission shaft penetrating through the interior of a gearbox.

However, in the structure of the gearbox, the originally reserved transmission shaft is used for power output of the hydraulic gear pump, the load is small, the rotor inertia of the generator is overlarge, and when the engine is started and stopped, particularly when the generator is stopped with load, the transmission shaft is broken due to the fact that the instantaneous transmission torque of the rapidly accelerating and rapidly decelerating transmission shaft is up to more than 300 N.m. And the inner space of the gearbox is limited, and the shock resistance of the gearbox cannot be improved by increasing the size of the transmission shaft.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a fork truck derailleur transmission to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

the utility model provides a fork truck derailleur transmission, including the engine and with engine fixed connection's derailleur, the output of engine with the input power of derailleur is connected, its characterized in that, the derailleur is kept away from the one end fixedly connected with generator of engine, the input of generator pass through the transmission shaft with the output power of engine is connected, the input of generator with be equipped with the torque limiter between the transmission shaft.

As a further aspect of the present invention: the transmission shaft penetrates through the transmission, and the transmission shaft is in opposite transmission connection with the transmission.

As a further aspect of the present invention: the torque limiter is located between the transmission and the generator.

As a further aspect of the present invention: the transmission is fixedly connected with the generator through a connecting flange.

As a further aspect of the present invention: the connecting flange is internally provided with a cylindrical accommodating cavity, and the torque limiter is positioned in the accommodating cavity.

As a further aspect of the present invention: one end of the torque limiter, which is close to the generator, is fixedly connected with an input shaft of the generator through a first connecting seat, and one end of the torque limiter, which is close to the transmission shaft, is fixedly connected with the transmission shaft through a second connecting seat.

As a further aspect of the present invention: the first connecting seat is connected with the second connecting seat in an axial sliding mode, the first connecting seat is connected with the second connecting seat in a rotating mode, a ball clamping groove is formed in one side, close to the second connecting seat, of the first connecting seat, balls are arranged in the ball clamping groove, and a groove used for containing the balls is formed in one side, close to the balls, of the second connecting seat.

As a further aspect of the present invention: the ball clamping groove is axially and slidably connected to the first connecting seat, a disc spring is arranged at one end, far away from the second connecting seat, of the ball clamping groove, and the disc spring is sleeved on the first connecting seat.

As a further aspect of the present invention: the transmission is arranged coaxially with the generator.

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

1. according to the torque limiter, the torque limiter is arranged between the transmission shaft and the motor, so that in the starting and stopping stages of the engine and in the rapid acceleration and rapid deceleration of the engine, through the flexible transmission function of torque limitation, when the torque transmitted between the transmission shaft and the motor is greater than the maximum transmission torque of the torque limiter, a rotation speed difference is generated between the transmission shaft and an input shaft of the motor, relative angular motion is generated, further instant torque impact on the transmission shaft in the transmission process can be effectively eliminated, and the safety performance of the transmission device is improved;

2. according to the transmission device, the transmission shaft is connected with the input shaft of the generator through the torque limiter, and the torque limiter has the function of a flexible coupling, so that the requirement on the coaxiality of the transmission shaft and the input shaft of the generator is lowered, the processing difficulty is reduced, the radial error generated in the installation process of the transmission device can be absorbed, the problem of the transmission shaft strength caused by low coaxiality is solved, and the transmission stability and the transmission shaft safety are improved;

3. this application is connected generator and derailleur through flange, arranges the torque limiter in flange simultaneously, therefore need not to change derailleur or motor, but also can provide the protection to the torque limiter through flange, reduces interference and the influence between generator and torque limiter, derailleur and the torque speed limiter.

Drawings

FIG. 1 is a schematic diagram of a prior art structure;

FIG. 2 is a partial perspective view of the forklift transmission structure of the present application;

FIG. 3 is a schematic view of a torque limiter connection configuration of the present application;

fig. 4 is a partial structural diagram of the present application.

In the figure: the device comprises an engine 1, a gearbox 2, a transmission shaft 3, an engine 4, a torque limiter 5, a first connecting seat 51, a second connecting seat 52, a disc spring 53, a ball 54, a groove 55, a ball clamping groove 56 and a connecting flange 6.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1, in an embodiment of the present invention, a transmission device of a forklift transmission includes an engine 1, an output end of the engine 1 is fixedly connected with a transmission 2, an input end of the transmission 2 is in power connection with an output end of the engine 1, one end of the transmission 2, which is far away from the engine 1, is fixedly connected with a generator 4, an input end of the generator 4 is fixedly connected with an output end of the engine 1 through a transmission shaft 3, and further, power can be transmitted to the transmission 2 and the generator 4 through the engine 1;

the generator 4 is fixedly connected with the transmission 2 through the connecting flange 6, the generator 4 is coaxially arranged with the transmission 2, and further transmission stability can be ensured, two ends of the connecting flange are respectively fixedly connected with the generator 4 and a shell of the transmission 2 through bolts, a cylindrical accommodating cavity is arranged inside the connecting flange 6, the transmission shaft 3 penetrates through the transmission 2, the transmission shaft 3 is coaxially arranged with the accommodating cavity, the torque limiter 5 is arranged between the transmission shaft 3 and an input shaft of the generator 4, one end of the torque limiter 5, close to the generator 4, is fixedly connected with the input shaft of the generator 4 through the first connecting seat 51, one end of the torque limiter 5, close to the transmission shaft 3, is fixedly connected with the transmission shaft 3 through the second connecting seat 52, the first connecting seat 51 is axially connected with the second connecting seat 52 in a sliding manner, and the first connecting seat 51 is relatively rotatably connected with the second connecting seat 52, one side that first connecting seat 51 is close to second connecting seat 52 is equipped with ball draw-in groove 56, be equipped with ball 53 in the ball draw-in groove 56, second connecting seat 52 is close to one side of ball 53 and offers the recess 55 that is used for holding ball 53, ball draw-in groove 56 axial sliding connection is on first connecting seat 51, the one end that second connecting seat 52 was kept away from to ball draw-in groove 56 is equipped with dish spring 54, dish spring 54 cup joints on first connecting seat 51, and then can transmit power to generator 4's input shaft by transmission shaft 3 through torque limiter 5 on, torque limiter 5 is located flange 6 holds the intracavity, and then can provide the protection for torque limiter through flange 6.

When the utility model is used, when electricity is needed to be generated, the output shaft of the engine 1 is communicated with the transmission shaft 3, so that the transmission shaft 3 rotates along with the output shaft of the engine 1, and then the input shaft of the generator 4 is driven to rotate through the transmission shaft 3, therefore, the generator 4 can generate electricity, in the process of electricity generation, in the initial stage of rotation of the transmission shaft 3, because the rotational inertia of the generator 4 is overlarge, the transmission shaft 3 is subjected to larger rotational torque in the initial stage, and the torque exceeds the maximum torque which can be transmitted by the torque limiter 5, at the moment, the ball 54 slides out of the groove 55, so that the ball 54 slides relative to the groove 55, therefore, the first connecting seat 51 in the torque limiter 5 starts to slide relative to the second connecting seat 52, so that the torque limiter 5 is in a sliding state, namely, the difference of the rotational speed between the input shafts of the transmission shaft 3 and the generator 4 is, until the difference torque between the input shaft of the generator 4 and the transmission shaft 3 is smaller than the transmission torque of the torque limiter 5, at this time, under the pressure of the disc spring 53, the ball 54 is clamped into the groove 55 again, so that the first connection seat 51 and the second connection seat 52 are in a power connection relationship from a new establishment, the transmission shaft 3 and the input shaft of the generator are in a rigid connection state, that is, the transmission shaft 3 and the input shaft of the generator 4 rotate at the same speed, and then a stable transmission state is achieved, when the engine 1 stops rotating, especially when a load is applied to the generator 4 when the engine 1 stops rotating, the rotational inertia of the rotor of the generator 4 is larger at this time, so that a rotational speed difference is generated between the input end of the generator 4 and the transmission shaft 3 through the torque limiter 5, and then an instantaneous impact torque is buffered, the safety of the transmission shaft 3 is ensured, and in addition, an instantaneous impact torque can also be eliminated through the torque limiter 5 in a, the safety of the transmission system is ensured.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention 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 integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides a fork truck derailleur transmission, including engine (1) and with engine (1) fixed connection's derailleur (2), the output of engine (1) with the input power of derailleur (2) is connected, its characterized in that, derailleur (2) are kept away from the one end fixedly connected with generator (4) of engine (1), the input of generator (4) pass through transmission shaft (3) with the output power of engine (1) is connected, the input of generator (4) with be equipped with torque limiter (5) between transmission shaft (3).

2. A forklift transmission drive as claimed in claim 1, characterised in that said drive shaft (3) extends through said transmission (2), said drive shaft (3) being in driving connection with said transmission (2) in opposition.

3. A forklift transmission drive as claimed in claim 1, characterised in that the torque limiter (5) is located between the transmission (2) and the generator (4).

4. A forklift transmission drive as claimed in claim 1, characterised in that the transmission (2) is fixedly connected to the generator (4) by means of a connecting flange (6).

5. A forklift transmission drive as claimed in claim 4, characterised in that the connecting flange (6) is internally provided with a cylindrical receiving cavity in which the torque limiter (5) is located.

6. A forklift transmission drive as claimed in claim 1, characterised in that the end of the torque limiter (5) adjacent to the generator (4) is fixedly connected to the input shaft of the generator (4) by means of a first connecting socket (51), and the end of the torque limiter (5) adjacent to the drive shaft (3) is fixedly connected to the drive shaft (3) by means of a second connecting socket (52).

7. The transmission device of the forklift transmission according to claim 6, wherein the first connecting seat (51) is axially slidably connected with the second connecting seat (52), the first connecting seat (51) is relatively rotatably connected with the second connecting seat (52), a ball clamping groove (56) is formed in one side of the first connecting seat (51) close to the second connecting seat (52), a ball (53) is arranged in the ball clamping groove (56), and a groove (55) for accommodating the ball (53) is formed in one side of the second connecting seat (52) close to the ball (53).

8. A forklift transmission device according to claim 7, wherein the ball catching groove (56) is axially slidably connected to the first connecting seat (51), and a disc spring (54) is provided at an end of the ball catching groove (56) away from the second connecting seat (52), and the disc spring (54) is sleeved on the first connecting seat (51).

9. A forklift transmission drive as claimed in claim 1, characterised in that the transmission (2) is arranged coaxially with the generator (4).