CN212447465U

CN212447465U - Support device for work vehicle and work vehicle

Info

Publication number: CN212447465U
Application number: CN202020840108.2U
Authority: CN
Inventors: 谢世惠
Original assignee: Sany Automobile Manufacturing Co Ltd
Current assignee: Sany Automobile Manufacturing Co Ltd
Priority date: 2020-05-19
Filing date: 2020-05-19
Publication date: 2021-02-02
Anticipated expiration: 2030-05-19

Abstract

The utility model provides a strutting arrangement and work vehicle for work vehicle. The supporting device comprises: fixing the turret; one end of the supporting arm is connected with the fixed turret; the supporting leg is arranged at the other end of the supporting arm; one end of the electric drive component is connected with the supporting arm, the other end of the electric drive component is connected with the fixed turret, and the electric drive component is suitable for providing power for the stretching or swinging of the supporting arm; and/or one end of the electric drive assembly is connected with the supporting arm, the other end of the electric drive assembly is connected with the supporting leg, and the electric drive assembly is suitable for providing power for the supporting of the supporting leg. The utility model discloses strutting arrangement's volume and weight can be effectively reduced to improve strutting arrangement's flexible degree of work and response sensitivity degree from this.

Description

Support device for work vehicle and work vehicle

Technical Field

The utility model relates to an engineering vehicle's technical field particularly, relates to a strutting arrangement and work vehicle for work vehicle.

Background

Engineering vehicles such as concrete pump trucks, fire trucks and the like are provided with support means such as outriggers which can be extended from above the vehicle and support the vehicle above the ground.

One of the disadvantages of the related art is that the supporting device is slow in response, resulting in a low degree of operational flexibility and response speed.

SUMMERY OF THE UTILITY MODEL

The present invention aims to solve at least one of the above technical problems.

To this end, a first object of the present invention is to provide a support device for a work vehicle.

A second object of the present invention is to provide a working vehicle.

In order to realize the utility model discloses a first purpose, the embodiment of the utility model provides a strutting arrangement for work vehicle, include: fixing the turret; one end of the supporting arm is connected with the fixed turret; the supporting leg is arranged at the other end of the supporting arm; one end of the electric drive component is connected with the supporting arm, the other end of the electric drive component is connected with the fixed turret, and the electric drive component is suitable for providing power for the stretching or swinging of the supporting arm; and/or one end of the electric drive assembly is connected with the supporting arm, the other end of the electric drive assembly is connected with the supporting leg, and the electric drive assembly is suitable for providing power for the supporting of the supporting leg.

The embodiment directly drives the support arm to stretch or swing or drives the support leg to stretch and retract by using the electric driving assembly, and the electric driving assembly accurately and sensitively controls the support arm and/or the support leg under the electric driving. The driving action of the oil cylinder is delayed, and the response is slow. Besides, the contraction and extension of the oil cylinder need to be supported by a large amount of hydraulic oil, and the oil return amount is large, so that the oil cylinder in the related technology needs to be matched with an oil storage tank with a large volume. The oil cylinder is made of a plurality of components with large volumes and complex structures, such as an oil storage tank, an oil return device, hydraulic oil, an oil pump, a multi-way valve, a balance valve, a sealing element, a hydraulic oil filter element and the like, so that the oil cylinder is complex in overall structure, large in volume and high in weight, the failure rate of the oil cylinder is high, and the maintenance and replacement costs are high. In contrast, the electric driving assembly of the embodiment is not only sensitive in response and accurate in stroke, but also does not need a complex oil return route and structure, and is small in size, simple in structure, light in weight and low in production and maintenance cost. Therefore, the embodiment can improve the low degree of flexibility and response sensitivity of the supporting device, and save the production and maintenance cost.

In addition, the technical solution provided by the above embodiment of the present invention can also have the following additional technical features:

in the above technical solution, the electric driving assembly includes at least one of the following or a combination thereof: the electric cylinder driving component and the electric push rod driving component.

The electric cylinder driving assembly or the electric push rod driving assembly is easy to control, high in control precision and control sensitivity, rapid in reaction, and capable of further improving the low working flexibility and response sensitivity of the supporting device.

In any one of the above technical solutions, the electric driving assembly includes an electric cylinder driving assembly, and the electric cylinder driving assembly includes: a first motor including a first motor output shaft; and the ball screw is connected with the output shaft of the first motor and is suitable for converting the rotary motion of the output shaft of the first motor into linear motion so as to apply acting force to the supporting arm and/or the supporting leg along the linear direction.

The first motor output shaft of the present embodiment extends from the first motor to output the torque of the first motor by rotation. The ball screw structure is sleeved on the first motor output shaft, and balls of the ball screw structure roll under the driving of the first motor output shaft so as to drive the screw to move along the linear direction. Therefore, the ball screw can effectively output the torque of the first motor and stably drive the supporting arm and/or the supporting leg to move.

In any of the above technical solutions, the electric cylinder driving assembly further includes: and the first speed reducer is arranged between the first motor and the ball screw.

The first speed reducer is used for adjusting the rotating speed of the first motor so as to improve the output torque of the first motor. From this, the first reduction gear of this embodiment mutually supports with first motor and ball to guarantee electric drive assembly's stability and sensitivity.

In any one of the above technical solutions, the electric driving assembly includes an electric push rod driving assembly, and the electric push rod driving assembly includes: a second motor including a second motor output shaft; and the push rod is connected with the output shaft of the second motor and is suitable for converting the rotary motion of the output shaft of the second motor into linear motion so as to apply acting force to the supporting arm and/or the supporting leg along the linear direction.

The second motor output shaft of the present embodiment extends from the second motor to output the torque of the second motor by rotation. The push rod structure is connected with an output shaft of the second motor, and the push rod moves under the driving of the output shaft of the second motor. Therefore, the push rod structure can effectively output the torque of the second motor and stably drive the supporting arm and/or the supporting leg to move.

In any of the above technical solutions, the method further includes: and the second speed reducer is arranged between the second motor and the push rod.

The second speed reducer is used for adjusting the rotating speed of the second motor so as to improve the output torque of the second motor. Therefore, the second speed reducer, the second motor and the push rod of the embodiment are matched with each other, so that the stability and the sensitivity of the electric drive assembly are ensured.

In any of the above technical solutions, the electric drive assembly includes: a first electric drive assembly; wherein the support arm comprises at least two telescopic arms, and the first electric drive component is suitable for driving any one of the two adjacent telescopic arms to extend or contract relative to the other telescopic arm.

The embodiment adopts the first electric drive assembly to control the stroke of the telescopic arm so as to increase the stability and reliability of the electric drive assembly and reduce the volume of the electric drive assembly.

In any of the above technical solutions, the electric drive assembly includes: a second electric drive assembly; wherein the supporting arm comprises a swinging arm, and the second electric drive assembly is suitable for driving the swinging arm to swing out or swing back.

The embodiment adopts the second electric drive assembly to control the stroke of the telescopic arm so as to increase the stability and reliability of the electric drive assembly and reduce the volume of the electric drive assembly.

In any of the above technical solutions, the electric drive assembly includes: a third electric drive assembly; wherein the third electric drive assembly is adapted to drive the support leg to extend or retract.

The embodiment can adopt the electric drive assembly with small volume, compact structure and high control precision to carry out drive control on the supporting leg so as to improve the flexibility of the supporting leg.

For realizing the utility model discloses a second purpose, the embodiment of the utility model provides an operating vehicle, include: a vehicle body; the utility model discloses strutting arrangement of any embodiment is suitable for and supports the vehicle body.

The utility model discloses the working vehicle includes the utility model discloses the strutting arrangement of arbitrary embodiment, therefore it has the utility model discloses the strutting arrangement's of arbitrary embodiment whole beneficial effect, no longer give unnecessary details here.

Additional aspects and advantages of the invention will be set forth in part in the description which follows, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic structural view of a supporting device in the related art;

FIG. 2 is a first schematic structural view of a support arm and support leg according to some embodiments of the present invention;

FIG. 3 is a second schematic view of a support arm and support leg according to some embodiments of the present invention;

FIG. 4 is a third structural schematic view of a support arm and support leg according to some embodiments of the present invention;

fig. 5 is a schematic diagram of a system configuration of a work vehicle according to some embodiments of the present invention.

Wherein, the corresponding relation between the reference numbers and the part names in fig. 1 is:

310': support arm, 320': support leg, 330': and an oil cylinder.

The correspondence between the reference numerals and the names of the components in fig. 2 to 5 is:

100: work vehicle, 200: vehicle body, 300: supporting means, 310: support arm, 312: first telescopic arm, 314: second telescopic arm, 316: third telescopic arm, 318: swing arm, 320: support leg, 330: electric drive assembly, 340: the turret is fixed.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention more clearly understood, the present invention will be described in further detail with reference to the accompanying drawings and detailed description. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.

The work vehicle 100 and the support device 300 of the work vehicle according to some embodiments of the present invention will be described below with reference to the drawings.

Engineering vehicles such as fire trucks, cranes, concrete pump trucks and the like need to be supported by supporting devices such as supporting legs during operation, so as to ensure the stability and safety of the vehicles and equipment thereon.

The support means is typically provided on the vehicle body which, in use, extends beyond the vehicle body and supports the vehicle body and the work vehicle thereon above the ground. For example, as shown in fig. 1, the support device may include a support arm 310 ' and a support leg 320 ' disposed at the bottom of the support arm 310 '. In use, the cylinder 330 'engaged with the support arm 310' drives the support arm 310 'to extend out of the vehicle body, and the cylinder 330' engaged with the support leg 320 'drives the support leg 320' to extend downward, so that the vehicle body is stably supported above the ground.

However, as shown in fig. 1, the supporting device in the related art is generally driven by the oil cylinder 330 ', and the driving of the oil cylinder 330' results in a large volume and a high weight of the supporting device. Therefore, the supporting device in the related art has low working flexibility and unsatisfactory response sensitivity.

In view of the above, the utility model provides a following embodiment in order to improve the flexible degree of work low and the sensitive degree of response of strutting arrangement of concrete pump truck.

Example 1:

as shown in fig. 2, the present embodiment provides a support device 300 for a work vehicle, including: a stationary turret 340, a support arm 310, support legs 320, and an electric drive assembly 330. One end of the support arm 310 is connected to a fixed turret 340. The support leg 320 is provided at the other end of the support arm 310. One end of the electric driving assembly 330 is connected to the support arm 310, and the other end of the electric driving assembly 330 is connected to the fixed turret 340, and the electric driving assembly 330 is adapted to power the extension or the swing of the support arm 310. And/or one end of the electric driving assembly 330 is connected with the support arm 310, the other end of the electric driving assembly 330 is connected with the support leg 320, and the electric driving assembly 330 is suitable for providing power for the support of the support leg 320.

The support device 300 of the present embodiment is adapted to a work vehicle to ensure stability and safety of the work vehicle in operation. In order to achieve the above-described effects, the supporting device 300 of the present embodiment includes a supporting arm 310 and a supporting leg 320. The work vehicle 100 includes a vehicle body 200 and a work vehicle, and the support arm 310 is provided above the vehicle body 200, is connected to the vehicle body 200, and extends outward in the lateral direction from above the vehicle body 200 by an extending motion or a swinging motion in an operating state. The support leg 320 is provided at a lower position of the support arm 310. When the support arm 310 is extended, the support leg 320 is disposed in the longitudinal direction so that the vehicle body 200 and the work vehicle thereon can be stably supported above the ground.

The support arm 310 has an elongated column-like or rod-like structure, and the number thereof may be plural. For example, four support arms 310 are distributed around the vehicle body 200 in the transverse direction, and support legs 320 are respectively provided on each support arm 310. The support leg 320 has a structure in a cylindrical or circular truncated cone shape, which abuts against the ground in an operating state and exerts a vertically downward acting force to the ground to support the vehicle body 200.

The number of the electric driving assemblies 330 of the present embodiment may be multiple, wherein any supporting arm 310 or any supporting leg 320 has an electric driving assembly 330 corresponding to and adapted to it, respectively. The electric driving assembly 330 is used for driving the supporting arm 310 and/or the supporting leg 320 to generate corresponding actions so as to enable the supporting device 300 to realize the supporting function.

For example, the electric driving component 330 is disposed in the supporting arm 310 or on the supporting arm 310, and the electric driving component 330 drives the supporting arm 310 to rotate around the vehicle body 200 in the transverse direction, so that the supporting arm 310 extends outward from the vehicle body 200.

By way of example again, the electric drive assembly 330 is provided in or on the support leg 320, and the electric drive assembly 330 drives the support leg 320 to approach or separate from the ground in the longitudinal direction, so that the support leg 320 supports the hybrid vehicle body 200 or stops supporting the vehicle body 200.

The present embodiment directly drives the support arm 310 and/or the support leg 320 by the power driving assembly 330, and the power driving assembly 330 provides precise and sensitive control over the support arm 310 and/or the support leg 320 under power driving. The driving motion of the cylinder 330' is delayed and the response is slow. Moreover, the contraction and extension of the oil cylinder 330 'require a large amount of hydraulic oil for support, and the large amount of oil return causes the oil cylinder 330' in the related art to be adapted with a large-sized oil storage tank. The oil storage tank, the oil return device, the hydraulic oil, the oil pump, the multi-way valve, the balance valve, the sealing element, the hydraulic oil filter element and other parts with large volumes and complex structures enable the oil cylinder 330 'to have complex and large overall structure and high weight, and the oil cylinder 330' has high failure rate and high maintenance and replacement cost. In contrast, the electric driving assembly 330 of the present embodiment is not only sensitive in response, precise in stroke, and does not require a complicated oil return route and structure, but also is small in size, simple in structure, light in weight, and low in production and maintenance costs. Therefore, the present embodiment can improve the low degree of operational flexibility and response sensitivity of the supporting device 300 of the work vehicle, and save production and maintenance costs.

Example 2:

the present embodiment provides a support device 300 for a work vehicle, and in addition to the technical features of embodiment 1 described above, further includes the following technical features.

The electric drive assembly 330 includes at least one or a combination of: the electric cylinder driving component and the electric push rod driving component.

The electric cylinder drive assembly or the electric push rod drive assembly is adapted to convert the rotation of the motor into a linear motion and thereby urge the support arm 310 and/or the support leg 320 to move. The electric cylinder driving assembly or the electric push rod driving assembly is easy to control, high in control precision and control sensitivity, rapid in response, and capable of further improving the low working flexibility and response sensitivity of the supporting device 300 of the working vehicle.

Example 3:

The electric drive assembly 330 comprises an electric cylinder drive assembly comprising: a first motor and a ball screw. The first motor includes a first motor output shaft. The ball screw is coupled to the first motor output shaft and is adapted to convert the rotational motion of the first motor output shaft into a linear motion to apply a force in a linear direction to the support arm 310 and/or the support leg 320.

The first motor output shaft of the present embodiment extends from the first motor to output the torque of the first motor by rotation. The ball screw structure is sleeved on the first motor output shaft, and balls of the ball screw structure roll under the driving of the first motor output shaft so as to drive the screw to move along the linear direction. Thereby, the ball screw can effectively output the torque of the first motor and stably drive the support arm 310 and/or the support leg 320 to move.

Example 4:

The electric cylinder driving assembly further includes: and the first speed reducer is arranged between the first motor and the ball screw.

The first speed reducer is used for adjusting the rotating speed of the first motor so as to improve the output torque of the first motor. Thus, the first reducer of the present embodiment is mutually engaged with the first motor and the ball screw to ensure the stability and sensitivity of the electric drive assembly 330.

Example 5:

The electric drive assembly 330 includes an electric putter drive assembly including: a second motor and a push rod. The second motor includes a second motor output shaft. The push rod is connected with the output shaft of the second motor and is suitable for converting the rotary motion of the output shaft of the second motor into linear motion so as to apply acting force to the supporting arm 310 and/or the supporting leg 320 in a linear direction.

The second motor output shaft of the present embodiment extends from the second motor to output the torque of the second motor by rotation. The push rod structure is connected with an output shaft of the second motor, and the push rod moves under the driving of the output shaft of the second motor. Thereby, the push rod structure can effectively output the torque of the second motor and stably drive the support arm 310 and/or the support leg 320 to move.

Example 6:

The supporting device 300 further includes: and the second speed reducer is arranged between the second motor and the push rod.

The second speed reducer is used for adjusting the rotating speed of the second motor so as to improve the output torque of the second motor. Thus, the second reducer of the present embodiment is cooperated with the second motor and the push rod to ensure the stability and sensitivity of the electric driving assembly 330.

Example 7:

as shown in fig. 3, the present embodiment provides a supporting device 300 for a work vehicle, and in addition to the technical features of embodiment 1 described above, the present embodiment further includes the following technical features.

The electric drive assembly 330 includes: a first electric drive assembly. Wherein the support arm 310 comprises at least two telescopic arms, the first electric drive assembly being adapted to drive either one of the two adjacent telescopic arms to extend or retract relative to the other.

In other words, the support arm 310 of the present embodiment is adapted to be extended to be away from and extend out of the vehicle body 200, and is adapted to be contracted to be close to and retract the vehicle body 200. To achieve the above object, the support arm 310 includes two or more telescopic arms. Two adjacent telescopic arms are connected and matched with each other. For example, one of the two adjacent telescopic arms is a fixed arm, and the other is a movable arm. The moveable arm may extend outwardly relative to the stationary arm or retract inwardly relative to the stationary arm. Wherein, every digging arm is equipped with corresponding first electric drive subassembly respectively. The first electric drive assembly may in particular be any of an electric cylinder drive assembly or an electric push rod drive assembly. Each first electric drive assembly drives the corresponding movable arm to extend or retract respectively.

For example, as shown in fig. 3, the support arm 310 includes a first telescoping arm 312, a second telescoping arm 314, and a third telescoping arm 316. The first telescopic arm 312 and the second telescopic arm 314 are disposed adjacent to each other, and the second telescopic arm 314 and the third telescopic arm 316 are disposed adjacent to each other. In use, the first electric driving assembly adapted to the second telescopic arm 314 drives the second telescopic arm 314 to extend relative to the first telescopic arm 312, and the first electric driving assembly adapted to the third telescopic arm 316 drives the third telescopic arm 316 relative to the second telescopic arm 314. Thus, the support arm 310 of the present embodiment gradually extends to be distant from the vehicle body 200 in the lateral direction and gradually contracts to be close to the vehicle body 200 in the lateral direction.

In the embodiment, the stroke of one or more telescopic arms is controlled by the first electric drive assembly. For the telescopic arm, the total length is longer, and as the telescopic length is gradually increased, the gravity center of the telescopic arm is gradually far away from the vehicle body 200, and the moment arm of the telescopic arm is gradually increased. The solution of using the cylinder 330' to drive the support arm 310 becomes increasingly unreliable. First, the longer and the thinner the cylinder 330', the greater the falling force, and the poorer the stability. Second, drive control of longer or more telescoping arms requires more hydraulic oil supply and more complex oil intake and return paths, thereby further increasing the overall volume and component complexity of the cylinder 330'. Therefore, the present embodiment uses the first electric driving assembly to control the stroke of the telescopic arm, so as to increase the stability and reliability of the electric driving assembly 330 and reduce the volume thereof.

Example 8:

as shown in fig. 4, the present embodiment provides a supporting device 300 for a work vehicle, and in addition to the technical features of embodiment 1 described above, the present embodiment further includes the following technical features.

The electric drive assembly 330 includes: a second electric drive assembly. Wherein the support arm 310 includes a swing arm 318, the second power drive assembly is adapted to drive the swing arm 318 to swing out or swing back.

In other words, the support arm 310 of the present embodiment is adapted to swing away from and extend out of the vehicle body 200, and to retract to approach and retract the vehicle body 200. As shown in fig. 4, to accomplish this, the support arm 310 includes a swing arm 318. The swing arm 318 is disposed above the fixed turret 340 and is adapted to pivot about the fixed turret 340. The second electric drive assembly may in particular be any of an electric cylinder drive assembly or an electric push rod drive assembly. A second electrical drive assembly is disposed between the fixed turret 340 and the swing arm 318 to urge the swing arm 318 to swing rotationally.

The present embodiment uses the second electric driving assembly to control the stroke of the telescopic arm, so as to increase the stability and reliability of the electric driving assembly 330 and reduce the volume thereof.

Example 9:

The electric drive assembly 330 includes: a third electric drive assembly. Wherein the third electric drive assembly is adapted to drive the support leg 320 to extend or retract.

In this embodiment, the support legs 320 are extended to raise the work vehicle and/or vehicle body 200 and shortened to lower the work vehicle and/or vehicle body 200.

The third electric drive assembly of this embodiment is used to power the movement or activity of the support leg 320. The third electric driving assembly may be any one of an electric cylinder driving assembly or an electric push rod driving assembly. For example, the third electric drive assembly includes a first motor and a ball screw. The ball screw is connected with a first motor output shaft of the first motor, and converts the rotary motion of the first motor output shaft into linear motion to apply acting force to the support leg 320 in the linear direction. Thereby, the ball screw drives the support leg 320 to approach the ground in the longitudinal direction to support the vehicle body 200. For another example, the third electric driving assembly includes a second motor and a push rod, the push rod is connected to the second motor output shaft of the second motor and is adapted to convert the rotary motion of the second motor output shaft into a linear motion so as to apply a force to the support leg 320 in a linear direction. Thereby, the push rod drives the support leg 320 to approach the ground in the longitudinal direction to support the vehicle body 200.

The present embodiment can adopt the electric driving assembly 330 with small volume, compact structure and high control precision to drive and control the supporting leg 320, so as to improve the flexibility of the supporting leg 320.

Example 10:

as shown in fig. 5, the present embodiment provides a work vehicle 100 including: a vehicle body 200 and a support device 300 according to any embodiment of the present invention. The work vehicle is provided on the vehicle body 200. The support device 300 is adapted to support the vehicle body 200.

The work vehicle 100 of the present embodiment may be any one of a concrete pump truck, a fire truck, and a crane.

For example, the working vehicle 100 of the embodiment is embodied as a concrete pump truck, and a stirring device and a conveying device are provided thereon, which can mix and stir fluid or powdery building materials such as concrete and convey the building materials. The work vehicle above the work vehicle 100 is being supported by the supporting device 300 according to any of the embodiments of the present invention to ensure the stability and safety thereof.

DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION

The present embodiment provides a support device 300 and a work vehicle 100 having the support device 300.

The support legs of concrete pump trucks and other vehicles in the related technology all adopt oil cylinder driving structures when swinging, stretching and retracting and supporting downwards. The oil cylinder driving structure has the following disadvantages: the oil cylinder driving action is delayed and the response is slow; the oil return amount is large due to the expansion of the oil cylinder, and a large oil tank is needed for storing large oil, so that the weight of the oil tank and the oil and the replacement cost of the oil, the sealing element and the filter element are increased; the oil cylinder is matched with oil pumps, multi-way valves, balance valves and other hydraulic components, and the oil cylinder has the advantages of precise structure, high purchasing and maintenance cost, high failure rate and heavy weight.

To address at least one of the above disadvantages, the supporting device 300 of the present embodiment includes a supporting arm 310 and a supporting leg 320. In the present embodiment, the electric driving assembly 330 (i.e., an electric cylinder) is used to replace the lower support cylinder of the support leg 320, so as to realize the functions of the support leg 320 and the entire vehicle body 200. In addition, the present embodiment employs an electric driving assembly 330 (i.e., an electric cylinder) instead of the oil cylinder of the support arm 310 including at least two telescopic arms, to achieve the extending and retracting actions of the support arm 310 provided with the telescopic structure. Finally, the present embodiment employs an electric drive assembly 330 (i.e., an electric cylinder) instead of a cylinder adapted to deploy the support arms 310 to effect the swinging deployment and swinging furling actions of the support arms 310, including the swing arm 318.

In this embodiment, the electric driving assembly 330 including the electric cylinder driving assembly or the electric push rod driving assembly is used to replace the supporting leg lower supporting oil cylinder, the supporting leg extending oil cylinder and the supporting leg unfolding oil cylinder in the related art, so as to eliminate the components such as a pump, a multi-way valve, a balance valve, an oil inlet and return pipe, an oil tank and hydraulic oil which are matched with the oil cylinders, and the electric driving assembly has small volume and weight. In addition, the electric driving assembly 330, such as the electric cylinder driving assembly, has the advantages of natural mechanical self-locking performance and rapid response, thereby improving the operability of the supporting device 300, facilitating the intelligent control of the supporting device 300, and having low maintenance cost.

To sum up, the utility model discloses beneficial effect does:

1. the present embodiment directly drives the support arm 310 and/or the support leg 320 by the power driving assembly 330, and the power driving assembly 330 provides precise and sensitive control over the support arm 310 and/or the support leg 320 under power driving.

2. The electric drive assembly 330 of the present embodiment converts the rotation of the motor into a linear motion and thereby moves the support arm 310 and/or the support leg 320. The electric driving assembly 330 of the present embodiment is not only sensitive in response, precise in stroke, and does not require a complicated oil return route and structure, but also has a small volume, a simple structure, a light weight, and low production and maintenance costs. Therefore, the present embodiment can improve the low degree of operational flexibility and response sensitivity of the supporting device 300 of the work vehicle, and save production and maintenance costs.

In the present application, the terms "first", "second", "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more unless expressly limited otherwise. The terms "mounted," "connected," "fixed," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", "front", "back", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or unit indicated must have a specific direction, be constructed and operated in a specific orientation, and therefore, should not be construed as limiting the present invention.

In the description of the present specification, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A support device for a work vehicle, comprising:

fixing the turret;

a support arm, one end of which is connected with the fixed turret;

the supporting leg is arranged at the other end of the supporting arm;

one end of the electric drive assembly is connected with the supporting arm, the other end of the electric drive assembly is connected with the fixed turret, and the electric drive assembly is suitable for providing power for the stretching or swinging of the supporting arm; and/or one end of the electric drive assembly is connected with the supporting arm, the other end of the electric drive assembly is connected with the supporting leg, and the electric drive assembly is suitable for providing power for the supporting of the supporting leg.

2. The support device for a work vehicle of claim 1, wherein the electric drive assembly comprises at least one of, or a combination of:

the electric cylinder driving component and the electric push rod driving component.

3. The support device for a work vehicle of claim 1, wherein the electric drive assembly comprises an electric cylinder drive assembly comprising:

a first motor including a first motor output shaft;

and the ball screw is connected with the output shaft of the first motor and is suitable for converting the rotary motion of the output shaft of the first motor into linear motion so as to apply acting force to the supporting arm and/or the supporting leg along the linear direction.

4. The support device for a work vehicle of claim 3, wherein the electric cylinder drive assembly further comprises:

and the first speed reducer is arranged between the first motor and the ball screw.

5. The support device for a work vehicle of claim 1, wherein the electric drive assembly comprises an electric push rod drive assembly comprising:

a second motor including a second motor output shaft;

and the push rod is connected with the output shaft of the second motor and is suitable for converting the rotary motion of the output shaft of the second motor into linear motion so as to apply acting force to the supporting arm and/or the supporting leg along the linear direction.

6. The support device for a work vehicle according to claim 5, characterized by further comprising:

and the second speed reducer is arranged between the second motor and the push rod.

7. The support device for a work vehicle according to any one of claims 1 to 6, wherein the electric drive assembly includes:

a first electric drive assembly;

wherein the support arm comprises at least two telescopic arms, the first electric drive assembly being adapted to drive either of the two adjacent telescopic arms to extend or retract relative to the other.

8. The support device for a work vehicle according to any one of claims 1 to 6, wherein the electric drive assembly includes:

a second electric drive assembly;

wherein the support arm comprises a swing arm, and the second electric drive assembly is suitable for driving the swing arm to swing out or swing back.

9. The support device for a work vehicle according to any one of claims 1 to 6, wherein the electric drive assembly includes:

a third electric drive assembly;

wherein the third electric drive assembly is adapted to drive the support leg to lengthen or shorten.

10. A work vehicle, characterized by comprising:

a vehicle body;

the support device of any one of claims 1 to 9, adapted to support the vehicle body.