WO2015058704A1

WO2015058704A1 - Engineering machinery and upper transmission system thereof

Info

Publication number: WO2015058704A1
Application number: PCT/CN2014/089377
Authority: WO
Inventors: 戴小石; 刘木南; 钟明辉
Original assignee: 三一汽车起重机械有限公司
Priority date: 2013-10-25
Filing date: 2014-10-24
Publication date: 2015-04-30
Also published as: CN103588115A; CN103588115B

Abstract

Disclosed is an upper transmission system of engineering machinery. The upper transmission system comprises an upper engine (1), a clutch (2), and a transfer case (3); the clutch (2) is installed on a rear end surface of a flywheel (11) of the upper engine (1), and a power input shaft of the transfer case (3) is connected to the clutch (2) by means of driving; when the upper transmission system is used, in a severely cold environment, if it is difficult to start the upper engine (1), the clutch (2) may be operated to separate from the upper engine (1), to disconnect the upper engine (1) from the transfer case (3), so that the upper engine (1) disengages from loads such as the transfer case (3). In this way, start-up resistance of the upper engine (1) can be reduced, so that the upper engine (1) is started in time and normally. After the upper engine (1) is started, the clutch (2) can be operated to be combined with the upper engine (1), so that the upper engine (1) transmits power to components such as the transfer case (3), to implement normal operation of the whole machine. Also disclosed is engineering machinery having the upper transmission system.

Description

Construction machinery and its onboard transmission system

The present application claims priority to Chinese Patent Application No. 201310511217.4, entitled "Engineering Machinery and Its Driving System" on October 25, 2013, the entire contents of which are incorporated herein by reference. All related applications of the disclosures cited and included in this application are an integral part of the present application.

Technical field

The invention relates to the technical field of upper engine driving, in particular to an engineering machine and a driving system thereof.

Background technique

At present, construction machinery (such as truck cranes) with larger tonnages (such as more than 100 tons) often adopts the design scheme of separately setting the engine on boarding and getting off (including the chassis), that is, using the independent engine on boarding (hereinafter referred to as the upper engine) ) to provide power for the work, the lower car uses the chassis engine to provide power for walking. The driving route of the upper engine is: the upper engine transmits the power to the transfer case through the elastic coupling, and one or more of the power output shafts of the transfer case are connected with the power input shaft of the corresponding number of hydraulic pumps to realize The hydraulic system works normally.

When this type of construction machinery is in a cold environment, for example, when it is in the cold weather conditions of the northern hemisphere in winter, it is difficult to start the engine on the train, and it is often necessary to turn on the starter motor several times or need other aids to start normally. Time-consuming and laborious; the reason is: in the cold environment, the transfer case and the hydraulic pump increase the load due to factors such as the viscosity increase of the oil, and the transfer case is directly connected to the upper engine. When the upper engine is started, it needs to be simultaneously Driven by the transfer case and the hydraulic pump, the start-up load cannot be started in time due to the large starting load.

Therefore, how to realize the normal starting of the on-board engine in a severe cold environment is a technical problem to be solved by those skilled in the art.

Summary of the invention

In view of this, one of the objects of the present invention is to provide an on-vehicle transmission system to solve the problem that the on-board engine in the prior art is difficult to start in a severe cold environment.

Specifically, the boarding transmission system includes a boarding engine, a clutch, and a transfer case; the clutch is mounted on a rear end surface of a flywheel of the upper engine, a power input shaft of the transfer case and the clutch Drive connection.

Further, the boarding drive system further includes a clutch separating device, a transmission assisting mechanism and a clutching operating device; the clutch separating device is disposed on the transfer case, and the clutch operating device passes the transmission assisting mechanism and the The clutch release device is connected.

Further, the boarding drive system further includes a hydraulic pump; the power input shaft of the hydraulic pump is drivingly coupled to the power output shaft of the transfer case.

Further, the clutch operating device is disposed in the cab of the upper vehicle.

Further, the clutch operating device is a joystick.

Further, the clutch operating device is a pedal.

Further, the clutch includes a clutch case, a friction plate, a pressure plate and a release bearing; the clutch case is located between the upper vehicle engine and the transfer case, and a fixed cover is disposed on a rear end surface of the flywheel The friction plate is located in the clutch housing and is disposed on a power input shaft of the transfer case, the friction plate is for frictional contact with a rear end surface of the flywheel; the pressure plate is mounted on the clutch a housing for pressing the friction plate on a rear end surface of the flywheel; the separation bearing is disposed on a power input shaft of the transfer case, and the release bearing is at the clutch release device Actuating, the platen is moved toward the transfer case.

Further, the clutch release device includes a separate rocker arm coupled to the release bearing.

Another object of the present invention is to provide a construction machine provided with the on-vehicle transmission system according to any of the above.

Further, the construction machine is a truck crane.

When the upper vehicle transmission system of the present invention is used, in a severe cold environment, if the engine of the upper vehicle is difficult to start, the clutch can be separated by operation, and the connection between the upper engine and the transfer case (power transmission) is disconnected, thereby enabling the upper engine. Disengage the load such as the transfer case and the hydraulic pump, which can effectively reduce the starting resistance of the upper engine and enable the upper transmitter to start normally. When the engine is started, the clutch can be combined to make the upper engine. The power is transmitted to components such as the transfer case to achieve normal operation of the whole machine.

DRAWINGS

The accompanying drawings, which are incorporated in the claims In the drawing:

1 is a structural block diagram of a loading and unloading system of a construction machine according to an embodiment of the present invention;

2 is a structural block diagram of a control mode of a boarding transmission system according to an embodiment of the present invention.

The label in the figure shows:

1 getting on the engine

2 clutch

3 transfer case

4 hydraulic pump

5 transmission assistance mechanism

6 clutch operating device

7 separation rocker

8 separation bearing

9 pressure plate

10 friction plate

11 flywheel

61 joystick

detailed description

It should be noted that the description of the specific structures in this section and the description of the embodiments are merely illustrative of specific embodiments and should not be construed as limiting the scope of the invention. Further, the embodiments in this section and the features in the embodiments may be combined with each other without conflict.

Referring to Figure 1, the present invention will be described in detail below with reference to the embodiments.

As shown in FIG. 1, the upper vehicle transmission system of this embodiment may include an upper vehicle engine 1, a clutch 2, a transfer case 3, a hydraulic pump 4, a transmission assisting mechanism 5, and a clutch operating device 6.

Wherein, the clutch 2 is mounted on the rear end surface of the flywheel of the upper engine 1; the power input shaft of the transfer case 3 is drivingly connected to the clutch 2 (such as a spline connection); the power input shaft of the hydraulic pump 4 and the transfer case 3 are A power output shaft drive connection (such as a spline connection) for providing pressurized oil to the upper hydraulic system; a transfer clutch 3 is provided with a clutch release device (not shown), and the clutch control device 6 transmits the assist mechanism 5 It is connected to the clutch separating device on the transfer case 3.

In the working process, when it is in a cold environment, if the engine of the upper vehicle is difficult to start, the clutch 2 can be separated and disconnected by operating the clutch operating device 6, transmitting and acting through the transmission assisting mechanism 5 and the clutch separating device. The connection between the engine 1 and the transfer case 3 (power transmission), so that the upper engine 1 is disengaged from the load such as the transfer case 3 and the hydraulic pump 4, so that the starting resistance of the upper engine 1 can be effectively reduced, and the upper conveyor can be made. 1 In time and normal start, when the engine 1 is started up, the clutch 2 can be combined and the power can be transmitted by operating the clutch operating device 6, after the transmission assisting mechanism 5 and the clutch separating device are transmitted and actuated. It is to the transfer case 3 and the hydraulic pump 4 and other components to achieve normal operation of the whole machine.

In a specific implementation process, the transmission assisting mechanism 5 can transmit the action of the clutch operating device 6 to the clutch separating device on the transfer case 3 by means of hydraulic assist (or other means). In addition, in the specific implementation process, as shown in FIG. 2, the clutch 2 includes a clutch case, a friction plate 10 (a follower), a pressure plate 9 (active member), and a release bearing 8; the clutch case is located on the upper engine 1 and the transfer Between the boxes 3, and a fixed cover is provided on the rear end surface of the flywheel 11 of the upper engine 1; friction The sheet 10 is disposed in the clutch housing and is connected to the power input shaft of the transfer case 3 by spline sliding, and the friction plate 10 is used for frictional contact with the rear end surface of the flywheel 11; the pressure plate 9 and its accessories are mounted in the clutch housing For pressing the friction plate 10 on the rear end surface of the flywheel 11; the separation bearing 8 is set on the power input shaft of the transfer case 3, and the separation bearing 8 can make the pressure plate 9 face by the action of the clutch separating device The movable case 3 moves (i.e., moves away from the flywheel 11 to further disengage the friction plate 10 from the frictional contact with the flywheel 11). In addition, in the specific implementation process, the clutch operating device 6 may include a joystick 61, and the clutch separating device may include a separating rocker arm 7. After the joystick 61 is actuated, it is transmitted and assisted via the transmission assisting mechanism 5 (this portion is not shown in FIG. 2). The position of the separation bearing 8 is controlled by the separating rocker arm 7, and the pressure plate 9 is controlled to move away from the flywheel 11, so that the friction plate 10 and the flywheel 11 are out of frictional contact, thus releasing the flywheel 11 and the transfer case 3 The connection (ie, power transmission) effectively reduces the starting load of the upper engine 1 .

For ease of control, the clutch operating device 6 can be disposed in the upper cab. It should be noted that, in the above embodiment, the clutch operating device 6 can be implemented by using the joystick 61, but in other embodiments, the clutch operating device 6 can also be implemented by using a pedal (such as a clutch pedal).

Another embodiment of the present invention further provides a construction machine, such as a truck crane, which is provided with the on-vehicle transmission system described in the above embodiment. Since the above-mentioned on-vehicle transmission system has the above technical effects, the construction machine The corresponding technical effects are also provided, and the specific implementation process of the corresponding part is similar to the above embodiment. For the specific implementation process of other parts, refer to the related description of the prior art, and details are not described herein.

The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., which are included in the spirit and scope of the present invention, should be included in the present invention. Within the scope of protection.

Industrial applicability

The utility model provides an engineering machine and a driving system therefor, which can disengage the clutch and disconnect the engine and the sub-machine by operation when the engine of the upper vehicle is difficult to start in a severe cold environment. The connection of the moving box (power transmission), so that the upper engine is disengaged from the load such as the transfer case, so that the starting resistance of the upper engine can be effectively reduced, the upper transmitter can be started normally in time, and the engine can be started up. After that, the clutch is combined by operation, so that the upper engine can transmit power to the transfer case and the like to achieve normal operation of the whole machine. Therefore, the present invention has industrial applicability.

Claims

A loading and unloading transmission system for a construction machine, characterized in that:

The boarding transmission system includes an upper engine (1), a clutch (2) and a transfer case (3);

The clutch (2) is mounted on a rear end face of a flywheel (11) of the upper vehicle engine (1), and a power input shaft of the transfer case (3) is drivingly coupled to the clutch (2).
The on-vehicle transmission system according to claim 1, wherein said upper vehicle transmission system further comprises a clutch separating device, a transmission assisting mechanism (5) and a clutch operating device (6); said clutch separating device being disposed at said On the transfer case (3), the clutch operating device (6) is connected to the clutch release device via the transmission assisting mechanism (5).
The on-vehicle transmission system according to claim 2, wherein said upper vehicle transmission system further comprises a hydraulic pump (4); a power input shaft of said hydraulic pump (4) and said transfer case (3) Power output shaft drive connection.
The on-vehicle transmission system according to claim 2, characterized in that the clutch operating device (6) is arranged in the cab of the upper vehicle.
The on-vehicle transmission system according to claim 4, characterized in that the clutch operating device (6) is a joystick (61).
The on-vehicle transmission system according to claim 4, characterized in that the clutch operating device (6) is a pedal.
The on-vehicle transmission system according to any one of claims 2 to 6, characterized in that the clutch (2) comprises a clutch housing, a friction plate (10), a pressure plate (9) and a release bearing (8); a clutch housing is disposed between the upper vehicle engine (1) and the transfer case (3), and a fixed cover is disposed on a rear end surface of the flywheel (11); the friction plate (10) is located at the a clutch housing and a power input shaft of the transfer case (3), the friction plate (10) is for frictional contact with a rear end surface of the flywheel (11); the pressure plate (9) is mounted In the clutch housing, for pressing the friction plate (10) on a rear end surface of the flywheel (11); the separation bearing (8) being fitted to a power input shaft of the transfer case (3), the release bearing (8) being capable of biasing the platen (9) toward the transfer under the action of the clutch release device The box (3) moves.
The on-vehicle transmission system according to claim 7, wherein said clutch release means comprises a separate rocker arm (7) coupled to said release bearing (8).
A construction machine characterized in that the upper machine of the construction machine is provided with the on-vehicle transmission system according to any one of claims 1 to 8.
The construction machine according to claim 9, wherein the construction machine is a truck crane.