Engineering machinery loading power transmission system and engineering machinery

Abstract

The utility model relates to the technical field of engineering machinery, and discloses an engineering machinery loading power transmission system and engineering machinery. The clutch is arranged corresponding to the output end of the power component and has a combined state and a separated state with the power component; the transfer component is in transmission connection with the clutch; the rocker arm structure is connected with the clutch, and the rocker arm structure is arranged in a swinging mode so that the clutch can be switched between the combination state and the separation state; and the linear driving structure is suitable for driving the rocker arm structure to swing. The linear driving structure is adopted to drive the rocker arm structure, so that the rocker arm structure drives the clutch and the power component to be combined or separated, the rocker arm structure is prevented from being directly driven manually, time and labor are saved, the driving difficulty of the rocker arm structure is reduced, and the clutch and the power component can be smoothly separated; and the reliability of the loading power transmission system of the engineering machinery is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of engineering machinery, in particular to an engineering machinery vehicle power transmission system and the engineering machinery. Background Art

[0002] Engineering machinery, such as cranes, usually adopts a design scheme in which the upper and lower vehicles are equipped with separate engines. The upper vehicle engine provides power (torque), and the transfer case is used to redistribute the torque to each hydraulic pump according to the required rotation direction and size. In the prior art, a clutch is provided between the engine and the transfer case, and the transmission connection between the engine and the transfer case can be disconnected by the clutch separation operation, temporarily interrupting the power, thereby facilitating the inspection and maintenance of the hydraulic pump group, as well as the normal start of the engine in cold winter weather, and preventing the engine from overloading, thereby protecting the engine. In the prior art, a pull rod-flexible shaft is usually used to drive the rocker arm to achieve the clutch separation operation. However, the flexible shaft lever is relatively small, resulting in a large operating force required, which is laborious for the operator to operate, and the problem of the clutch not being able to be separated smoothly may occur. In addition, the routing problem of the flexible shaft, as well as the rust problem and the ice problem in winter, will all increase the difficulty of the separation operation. Utility Model Content

[0003] In view of this, the utility model provides a power transmission system for an engineering machinery vehicle and an engineering machinery, so as to solve the problem that the existing power transmission system for an engineering machinery vehicle is difficult to realize separation operation.

[0004] In the first aspect, the utility model provides a power transmission system for an engineering machinery vehicle, comprising: a power component; a clutch, arranged corresponding to the output end of the power component, and having an engaged state and a disengaged state with the power component; a transfer component, transmission-connected to the clutch; a rocker arm structure, connected to the clutch, the rocker arm structure being swingably arranged to enable the clutch to switch between the engaged state and the disengaged state; and a linear drive structure, suitable for driving the rocker arm structure to swing.

[0005] Beneficial effects: A linear drive structure is used to drive the rocker arm structure, so that the rocker arm structure drives the clutch and the power component to engage or separate, avoiding direct manual driving of the rocker arm structure, saving time and effort, reducing the difficulty of driving the rocker arm structure, ensuring that the clutch and the power component can be separated smoothly, and improving the reliability of the power transmission system of the construction machinery.

[0006] In an optional embodiment, the clutch includes a driven plate, a diaphragm spring and a release bearing, the release bearing connecting the rocker arm structure and the diaphragm spring, the diaphragm spring being arranged corresponding to the driven plate, and driving the release bearing to move when the rocker arm structure swings, so that the diaphragm spring is deformed, thereby adjusting the pressing force of the diaphragm spring on the driven plate, and the driven plate is combined with or separated from the power component.

[0007] In an optional embodiment, the engineering machinery vehicle power transmission system further includes a control unit, and the control unit is electrically connected to the linear drive structure.

[0008] Beneficial effect: By setting up a control unit, it is convenient to control the linear drive structure, thereby facilitating the completion of the combining and separating operations.

[0009] In an optional embodiment, the engineering machinery on-vehicle power transmission system further includes a trigger unit, and the trigger unit is electrically connected to the control unit or is directly electrically connected to the linear drive structure.

[0010] Beneficial effect: By setting the trigger unit, it is convenient for the operator to manually control the operation of the linear drive structure, thereby realizing the combination or separation operation according to the use requirements.

[0011] In an optional embodiment, the engineering machinery on-vehicle power transmission system further includes a position detection unit, wherein the position detection unit is electrically connected to the control unit, and the position detection unit is suitable for detecting whether the clutch is in the engaged state or the disengaged state.

[0012] Beneficial effect: By setting up a position detection unit to detect the position of the clutch, it is ensured that the clutch is effectively in an engaged state or a disengaged state, avoiding the problem of poor engagement or disengagement between the clutch and the power component.

[0013] In an optional embodiment, the position detection unit is arranged corresponding to the rocker arm structure, and the position detection unit is suitable for detecting the swing position of the rocker arm structure.

[0014] Beneficial effect: By using the position detection unit to detect the swing position of the rocker arm structure, it can be determined whether the clutch is in an engaged state or a disengaged state. The overall structure is simple, which facilitates the arrangement of the position detection unit and is easy to ensure the accuracy of the detection result.

[0015] In an optional embodiment, the power component further includes an engine; and / or the transfer component includes a transfer case; and / or the linear drive structure includes a retractable electric push rod or a retractable drive cylinder.

[0016] In an optional embodiment, the fixed end of the linear drive structure is hinged to the housing of the engine, the driving end of the linear drive structure is hinged to one end of the rocker arm structure, and the rocker arm structure and the housing of the transfer case have a hinged mounting point.

[0017] In an optional embodiment, the driving end of the linear drive structure is hinged to one end of the rocker arm structure, and the linear drive structure and / or the rocker arm structure are installed independently of the engine and the transfer case.

[0018] In a second aspect, the utility model further provides an engineering machinery, comprising the above-mentioned engineering machinery on-board power transmission system. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 This is a schematic diagram of the connection structure of a power transmission system for an engineering machinery vehicle according to an embodiment of the utility model;

[0021] Figure 2 The present invention is a schematic diagram of the external structure of a power transmission system for an engineering machinery vehicle according to an embodiment of the present invention.

[0022] Description of reference numerals:

[0023] 1. Power component; 101. Flywheel; 2. Clutch; 201. Driven plate; 202. Diaphragm spring; 203. Release bearing; 3. Transfer component; 4. Rocker arm structure; 5. Linear drive structure; 6. Control unit; 7. Position detection unit; 8. Hydraulic pump group. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0025] Combine the following Figure 1 and Figure 2, describing an embodiment of the utility model.

[0026] According to an embodiment of the utility model, on the one hand, a power transmission system for an engineering machinery vehicle is provided, comprising: a power component 1, a clutch 2, a transfer component 3, a rocker arm structure 4 and a linear drive structure 5. The clutch 2 is arranged corresponding to the output end of the power component 1, and has a coupled state and a disengaged state with the power component 1. The transfer component 3 is transmission-connected to the clutch 2. The rocker arm structure 4 is connected to the clutch 2, and the rocker arm structure 4 can be swingably arranged to switch the clutch 2 between the coupled state and the disengaged state. The linear drive structure 5 is suitable for driving the rocker arm structure 4 to swing.

[0027] A linear drive structure 5 is used to drive the rocker arm structure 4, so that the rocker arm structure 4 drives the clutch 2 to engage or separate with the power component 1, avoiding direct manual driving of the rocker arm structure 4, saving time and effort, reducing the difficulty of driving the rocker arm structure 4, ensuring that the clutch 2 and the power component 1 can be separated smoothly, and improving the reliability of the power transmission system of the construction machinery.

[0028] It should be noted that the power transmission system for the engineering machinery vehicle of the present embodiment adopts the linear drive structure 5 as the power source, replacing the manual operation, thereby improving the convenience and reliability of the clutch 2 separation operation.

[0029] It is worth noting that when the clutch 2 is in an engaged state, the power generated by the power component 1 can be transmitted to the transfer component 3; when the clutch 2 is in a disengaged state, the power generated by the power component 1 cannot be transmitted to the transfer component 3.

[0030] It should be further explained that when the transfer component 3 or the downstream components of the transfer component 3 need to be inspected or maintained, or when the power component 1 is started in cold winter weather, the clutch 2 can be placed in a disengaged state; when the inspection or maintenance is completed or the power component 1 is started normally, the clutch 2 can be switched to a engaged state, so that the construction machinery can operate normally.

[0031] In one embodiment, Figure 1 As shown, the clutch 2 includes a driven plate 201, a diaphragm spring 202 and a release bearing 203. The release bearing 203 connects the rocker arm structure 4 and the diaphragm spring 202. The diaphragm spring 202 is arranged corresponding to the driven plate 201. When the rocker arm structure 4 swings, the release bearing 203 is driven to move to deform the diaphragm spring 202, thereby adjusting the pressing force of the diaphragm spring 202 on the driven plate 201. The driven plate 201 is combined with or separated from the power component 1.

[0032] It can be understood that the diaphragm spring 202 is a convex drum structure, that is, the middle part of the diaphragm spring 202 is bulged relative to the outer periphery, and the release bearing 203 is connected to the middle part of the diaphragm spring 202. In the engaged state, the outer periphery of the diaphragm spring 202 is used to press the driven plate 201. When the clutch 2 is switched from the engaged state to the disengaged state, the linear drive structure 5 drives the rocker arm structure 4 to swing, and the rocker arm structure 4 drives the release bearing 203 to move axially, so that the release bearing 203 presses the middle part of the diaphragm spring 202, and the diaphragm spring 202 is deformed, and then the outer periphery of the diaphragm spring 202 is tilted, thereby canceling the pressing of the driven plate 201. Further, a pressure plate is arranged between the driven plate 201 and the diaphragm spring 202, and the elastic force of the diaphragm spring 202 acts on the pressure plate, and the pressure plate presses the driven plate 201.

[0033] It is worth noting that, in this embodiment, the clutch 2 is a diaphragm spring clutch.

[0034] In one embodiment, Figure 1 As shown, the power component 1 includes a flywheel 101 , and the flywheel 101 is arranged correspondingly to the driven disc 201 .

[0035] When the clutch 2 is in an engaged state, the diaphragm spring 202 applies a pressing force to the driven disc 201, so that the driven disc 201 is effectively in contact with the flywheel 101, thereby realizing power transmission; when the clutch 2 is in a disengaged state, driven by the rocker arm structure 4, the release bearing 203 moves, thereby driving the diaphragm spring 202 to move so that the diaphragm spring 202 is deformed, and the pressing force of the diaphragm spring 202 on the driven disc 201 is reduced, so that the driven disc 201 is separated from the flywheel 101, and the power transmission is interrupted.

[0036] Of course, in other alternative embodiments, the clutch 2 may also be other types of clutches, as long as it can drive the release bearing 203 to move during the process of the linear drive structure 5 driving the rocker arm structure 4 to swing, thereby driving the clutch 2 (driven disc 201 or friction plate) to move closer to or away from the flywheel 101.

[0037] In one embodiment, Figure 1 As shown, the power transmission system for the engineering machinery vehicle further includes a control unit 6, and the control unit 6 is electrically connected to the linear drive structure 5. By providing the control unit 6, it is convenient to control the linear drive structure 5, thereby facilitating the completion of the engagement and separation operations.

[0038] In one embodiment, the power transmission system for the engineering machinery further includes a trigger unit, which is electrically connected to the control unit 6. By providing the trigger unit, it is convenient for the operator to manually control the operation of the linear drive structure 5, thereby realizing the combination or separation operation according to the use requirements.

[0039] It is worth noting that the trigger unit can be a touch button on the display screen in the engineering machinery control room, or a physical button set in the control room, so as to facilitate the operator in the control room to operate to send a signal to the control unit 6 through the trigger unit.

[0040] Certainly, the trigger unit can also be a remote controller. At this moment, even if the operator does not enter the control room, the remote controller can be triggered to send a signal to the control unit 6 to realize the remote control of the clutch 2.

[0041] Of course, the trigger unit can also be arranged near the layout position of the power transmission system on the engineering machinery, or can be directly electrically connected to the linear drive structure 5.

[0042] In one embodiment, Figure 1 As shown, the power transmission system for the engineering machinery also includes a position detection unit 7, which is electrically connected to the control unit 6, and is suitable for detecting whether the clutch 2 is in a coupled state or a disengaged state. By setting the position detection unit 7 to detect the position of the clutch 2, it is ensured that the clutch 2 is effectively in a coupled state or a disengaged state, and the problem of poor coupling effect or poor disengagement effect between the clutch 2 and the power component 1 is avoided.

[0043] In one embodiment, Figure 1 As shown, the position detection unit 7 is arranged corresponding to the rocker arm structure 4, and the position detection unit 7 is suitable for detecting the swing position of the rocker arm structure 4. By using the position detection unit 7 to detect the swing position of the rocker arm structure 4, it can be obtained whether the clutch 2 is in a connected state or a disconnected state. The overall structure is simple, which is convenient for the arrangement of the position detection unit 7 and easy to ensure the accuracy of the detection result.

[0044] Specifically, Figure 1 As shown, two position detection units 7 are provided, and the two position detection units 7 are arranged on both sides of the rocker arm structure 4 along the swing direction of the rocker arm structure 4. The rocker arm structure 4 has a first swing position and a second swing position. When the rocker arm structure 4 is in the first swing position, the clutch 2 is in a coupled state, and when the rocker arm structure 4 is in the second swing position, the clutch 2 is in a disengaged state. One of the position detection units 7 is used to detect whether the rocker arm structure 4 is in the first swing position, and the other position detection unit 7 is used to detect whether the rocker arm structure 4 is in the second swing position. The position detection unit 7 sends the actual position detection result of the rocker arm structure 4 to the control unit 6, and the control unit 6 determines whether the actual position of the rocker arm structure 4 is accurately located at the first swing position or the second swing position, and then derives whether the clutch 2 is in a coupled state or a disengaged state.

[0045] Of course, in other alternative embodiments, the position detection unit 7 can also be arranged at other positions, that is, by detecting the position of other structures to determine whether the clutch 2 is in the engaged state or the disengaged state. For example, the position detection unit 7 is set corresponding to the linear drive structure 5, and the driving position of the linear drive structure 5 is detected by the position detection unit 7; further, when the linear drive structure 5 is a retractable electric push rod or a retractable hydraulic cylinder, the extended position of the driving end of the linear drive structure 5 can be detected by the position detection unit 7.

[0046] In one embodiment, the position detection unit 7 is an electromagnetic induction switch.

[0047] Of course, in other alternative implementations, the position detection unit 7 may also be other types of sensors or switches.

[0048] In one embodiment, Figure 1 As shown, the power transmission system of the engineering machinery further includes a hydraulic pump group 8, and the transfer component 3 is transmission-connected to the hydraulic pump group 8.

[0049] In one embodiment, the power component 1 further includes an engine.

[0050] In one embodiment, the transfer component 3 includes a transfer case.

[0051] It is worth noting that the release bearing 203 is sleeved on the power input shaft of the transfer case, and the power output shaft of the transfer case is transmission-connected to the hydraulic pump group 8 .

[0052] In one embodiment, the linear drive structure 5 includes a retractable electric push rod.

[0053] It is worth noting that, in this embodiment, when the driving end of the linear driving structure 5 is in an extended state, the clutch 2 is in an engaged state; when the driving end of the linear driving structure 5 is in a retracted state, the clutch 2 is in a disengaged state. That is, by controlling the extension and retraction of the driving end of the linear driving structure 5, the engagement and disengagement of the clutch 2 and the power component 1 can be controlled.

[0054] It should be noted that a signal is sent to the control unit 6 through the trigger unit, and the extension and retraction of the retractable electric push rod are controlled by the control unit 6, so as to realize the electrification of the engagement and disengagement operations of the clutch 2 and ensure the reliability of the engagement and disengagement operations of the engine and the transfer case through the clutch 2.

[0055] Of course, in other alternative embodiments, the linear drive structure 5 may also include a retractable drive cylinder, such as a hydraulic cylinder, an electric cylinder, etc.

[0056] It is worth mentioning that please refer to Figure 2The fixed end of the linear drive structure 5 is hinged to the housing of the engine, the driving end of the linear drive structure 5 is hinged to one end of the rocker arm structure 4, and the rocker arm structure 4 and the housing of the transfer case have a hinged mounting point.

[0057] Of course, in other alternative embodiments, the linear drive structure 5 and / or the rocker arm structure 4 may be installed independently of the engine and the transfer case.

[0058] When the clutch 2 of this embodiment is separated from the engine, a separation signal is sent to the control unit 6 through the trigger unit. After receiving the separation signal, the control unit 6 sends a signal to the retractable electric push rod, thereby controlling the retractable electric push rod to retract; the retractable electric push rod pulls the rocker arm structure 4 to swing, driving the separation bearing 203 to move axially in the positive direction, causing the diaphragm spring 202 to deform, and the outer periphery of the diaphragm spring 202 to tilt up to cancel the pressure on the driven plate 201, so that the driven plate 201 is separated from the flywheel 101.

[0059] When the clutch 2 of this embodiment is engaged with the engine, a engagement signal is sent to the control unit 6 through the trigger unit. After receiving the engagement signal, the control unit 6 sends a signal to the retractable electric push rod, thereby controlling the retractable electric push rod to extend; the retractable electric push rod pushes the rocker arm structure 4 to swing, driving the release bearing 203 to move axially in the opposite direction, so that the diaphragm spring 202 returns to its original state, and the outer periphery of the diaphragm spring 202 abuts and presses the driven disk 201, so that the driven disk 201 is connected to the flywheel 101.

[0060] According to an embodiment of the present utility model, on the other hand, a construction machine is provided, comprising the above-mentioned construction machine upper vehicle power transmission system.

[0061] In one embodiment, the construction machine may be a crane.

[0062] Of course, in other alternative embodiments, the engineering machine may also be other types of working machines.

[0063] Although the embodiments of the present invention are described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations are all within the scope defined by the appended claims.

Claims

1. A power transmission system for an engineering machinery vehicle, characterized in that: include: Power components (1); A clutch (2) is arranged corresponding to the output end of the power component (1) and has a combined state and a separated state with the power component (1); A transfer component (3) drivingly connected to the clutch (2); A rocker arm structure (4) connected to the clutch (2), wherein the rocker arm structure (4) is swingably arranged to switch the clutch (2) between the engaged state and the disengaged state; The linear drive structure (5) is suitable for driving the rocker arm structure (4) to swing.

2. The power transmission system for construction machinery according to claim 1, characterized in that: The clutch (2) comprises a driven disc (201), a diaphragm spring (202) and a release bearing (203); the release bearing (203) is connected to the rocker arm structure (4) and the diaphragm spring (202); the diaphragm spring (202) is arranged corresponding to the driven disc (201); when the rocker arm structure (4) swings, the release bearing (203) is driven to move, so that the diaphragm spring (202) is deformed, thereby adjusting the pressing force of the diaphragm spring (202) on the driven disc (201); the driven disc (201) is arranged in combination with or separately from the power component (1).

3. The power transmission system for construction machinery according to claim 1 or 2, characterized in that: The engineering machinery vehicle power transmission system further comprises a control unit (6), and the control unit (6) is electrically connected to the linear drive structure (5).

4. The power transmission system for construction machinery according to claim 3, characterized in that: The engineering machinery vehicle power transmission system further comprises a trigger unit, which is electrically connected to the control unit (6) or directly electrically connected to the linear drive structure (5).

5. The power transmission system for construction machinery according to claim 3, characterized in that: The engineering machinery onboard power transmission system further comprises a position detection unit (7), wherein the position detection unit (7) is electrically connected to the control unit (6), and the position detection unit (7) is suitable for detecting whether the clutch (2) is in the engaged state or the disengaged state.

6. The power transmission system for construction machinery according to claim 5, characterized in that: The position detection unit (7) is arranged corresponding to the rocker arm structure (4), and the position detection unit (7) is suitable for detecting the swing position of the rocker arm structure (4).

7. The power transmission system for construction machinery according to claim 1 or 2, characterized in that: The power component (1) further comprises an engine; and / or, The transfer component (3) comprises a transfer case; and / or, The linear drive structure (5) comprises a retractable electric push rod or a retractable drive cylinder.

8. The power transmission system for construction machinery according to claim 7, characterized in that: The fixed end of the linear drive structure (5) is hinged to the outer shell of the engine, the driving end of the linear drive structure (5) is hinged to one end of the rocker arm structure (4), and the rocker arm structure (4) and the outer shell of the transfer case have an hinged mounting point.

9. The power transmission system for construction machinery according to claim 7, characterized in that: The driving end of the linear drive structure (5) is hinged to one end of the rocker arm structure (4), and the linear drive structure (5) and / or the rocker arm structure (4) are installed independently of the engine and the transfer case.

10. An engineering machine, characterized in that: A power transmission system for an engineering machinery vehicle comprising any one of claims 1 to 9.

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