阅读说明：本技术 一种具有双调节功能的液压悬挂装置 (Hydraulic suspension device with double adjusting functions ) 是由 韩明兴 曹纵 张燚超 袁翔宇 严立筠 徐士林 张绍伯 邵帅 于 2020-12-16 设计创作，主要内容包括：本发明公开了一种具有双调节功能的液压悬挂装置,包括细调液压缸、可移动箱体、粗调液压缸、支撑底座、固定箱体、上拉杆、中间杆、连接杆、负载挂架、下拉杆,细调液压缸的一端安装在支撑底座上,另一端安装在可移动箱体上；粗调液压缸安装在可移动箱体的上端,可移动箱体安装在固定箱体的内部,固定箱体固定在支撑底座上；上拉杆安装在可移动箱体的顶部,连接杆安装在上拉杆和下拉杆之间；负载挂架用于承载农具。本发明主要应用在拖拉机后悬挂上对农具进行固定及移动,便于进行农业生产。该系统具备无污染、受力更合理、提高力的利用效率、实现粗调和细调共同作用、有更好的稳定性和自我调节能力等显著优势。(The invention discloses a hydraulic suspension device with double adjusting functions, which comprises a fine adjustment hydraulic cylinder, a movable box body, a coarse adjustment hydraulic cylinder, a support base, a fixed box body, an upper pull rod, a middle rod, a connecting rod, a load hanging frame and a lower pull rod, wherein one end of the fine adjustment hydraulic cylinder is arranged on the support base, and the other end of the fine adjustment hydraulic cylinder is arranged on the movable box body; the coarse adjustment hydraulic cylinder is arranged at the upper end of the movable box body, the movable box body is arranged in the fixed box body, and the fixed box body is fixed on the supporting base; the upper pull rod is arranged at the top of the movable box body, and the connecting rod is arranged between the upper pull rod and the lower pull rod; the load stores pylon is used for bearing the weight of agricultural implement. The invention is mainly applied to the rear suspension of the tractor to fix and move farm tools, and is convenient for agricultural production. The system has the remarkable advantages of no pollution, more reasonable stress, improved force utilization efficiency, realization of combined action of coarse adjustment and fine adjustment, better stability, self-regulation capability and the like.)

1. The utility model provides a hydraulic suspension device with two regulatory functions which characterized in that: the hydraulic control system comprises a fine adjustment hydraulic cylinder (1), a movable box body (2), a coarse adjustment hydraulic cylinder (3), a supporting base (4), a fixed box body (5), an upper pull rod (6), a middle rod (7), a connecting rod (8), a load hanging rack (9) and a lower pull rod (10), wherein one end of the fine adjustment hydraulic cylinder (1) is installed on the supporting base (4), and the other end of the fine adjustment hydraulic cylinder is installed on the movable box body (2); the coarse adjustment hydraulic cylinder (3) is arranged at the upper end of the movable box body (2), the movable box body (2) is arranged in the fixed box body (5), and the fixed box body (5) is fixed on the supporting base (4); the upper pull rod (6) is arranged at the top of the movable box body (2), and the connecting rod (8) is arranged between the upper pull rod (6) and the lower pull rod (10); the upper pull rod (6), the connecting rod (8), the lower pull rod (10) and the middle rod (7) form a connecting rod mechanism and are stably connected with the load hanging rack (9) through three-point connection; the load hanging rack (9) is used for bearing farm tools.

2. A hydraulic suspension device with dual adjustment function according to claim 1, characterized in that: the fine adjustment hydraulic cylinder (1) and the coarse adjustment hydraulic cylinder (3) are installed in pairs and are symmetrically arranged on two sides of the supporting base (4); the movable box (2) and the fixed box (5) are correspondingly installed in pairs.

3. A hydraulic suspension device with dual adjustment function according to claim 2, characterized in that: the coarse adjustment hydraulic cylinder (3) is used in a coarse adjustment mode, and the fine adjustment hydraulic cylinder (1) is used in a fine adjustment mode.

4. A hydraulic suspension device with dual adjustment function according to claim 3, characterized in that: the coarse adjustment hydraulic cylinder (3) controls the rotation angle of the upper pull rod (6) by changing the stroke of the piston rod in a coarse adjustment mode, so that the movement of the whole connecting rod mechanism is influenced, and the suspension device can greatly realize the function of lifting the farm tool.

5. A hydraulic suspension device with dual adjustment function according to claim 3, characterized in that: the fine adjustment hydraulic cylinder (1) controls the stroke of the movable box body (2) in the fixed box body (5) by changing the stroke of the piston rod in a fine adjustment mode, so that the horizontal position of the lower pull rod (10) is changed along with the stroke, the lower pull rod (10) changes a rotating angle through the transmission of the connecting rod (8), and the load hanger (9) is lifted or lowered in a small range.

6. A hydraulic suspension device with dual adjustment function according to claim 1, characterized in that: the movable box body (2) is arranged inside the fixed box body (5) through guide rails on two sides and a bottom pulley, and the bottom pulley of the movable box body (2) is connected with a slide rail in the fixed box body (5) and used for realizing horizontal stroke change; the guide rails on the two sides of the movable box body (2) mainly play a role in assisting the movement of the bottom pulley and limiting the movement direction of the movable box body (2); when the piston cylinder of the fine adjustment hydraulic cylinder (1) operates, the stroke of the movable box body (2) is changed along with the operation of the piston cylinder, and the fine adjustment hydraulic cylinder is used for fine adjustment of the height of the mode farm tool.

7. A hydraulic suspension device with dual adjustment function according to claim 1, characterized in that: the load hanging rack (9) is fixed through three-point suspension and is used for bearing agricultural implements of different models.

8. A hydraulic suspension device with dual adjustment function according to claim 1, characterized in that: the upper pull rod (6) is installed on the upper portion of the movable box body (2), two sides of the connecting rod (8) are hinged to one end of the upper pull rod (6) and the middle of the lower pull rod (10) respectively, two points of the load hanging rack (9) are hinged to the lower pull rod (10), and one point of the load hanging rack is hinged to the middle rod (7).

9. A hydraulic suspension device with dual adjustment function according to claim 1, characterized in that: the fixed box body (5) is fixed on the supporting base (4) through screw connection.

10. A hydraulic suspension device with a double adjustment function according to any one of claims 1-9, characterized in that: hydraulic pressure linkage and thing networking APP with two regulatory function carry out the interactive operation, pass through remote transmission to user side APP with the outdoor scene image of hydraulic pressure linkage operation, and operating personnel realizes hydraulic pressure linkage's remote operation.

Technical Field

The invention belongs to the technical field of agricultural machinery, and particularly relates to a hydraulic suspension device with double adjusting functions.

Background

With the progress of mechanical, electrical and hydraulic technologies and the continuous development of materials and processing technologies, agricultural mechanization has gone up the way of high-speed development. The suspension device is an important component of the tractor, which realizes the effective connection between the tractor and the working farm tool, and is a key device for carrying out related agricultural cultivation. In order to meet the requirements of modern automatic agricultural operation, the suspension device is also developed from an early mechanical three-point suspension to a current electro-hydraulic suspension system, and the electro-hydraulic suspension system can be rapidly matched with various agricultural implements to form various tractor operation unit systems so as to realize the lifting and the tilling depth control of various agricultural implements.

The main problems and drawbacks of the prior art include:

at present, electro-hydraulic suspension devices are mostly improved from transmission three-point suspension devices, a pair of hydraulic cylinders are added through simple installation and are matched with corresponding electro-hydraulic control systems to control the telescopic action of the hydraulic cylinders, and therefore manual work is replaced to adjust the suspension height of the suspension devices. However, the electro-hydraulic suspension system of the tractor is a strong nonlinear system, the external load of the electro-hydraulic suspension system is greatly influenced by soil, landform, tractor driving state and weather change, the working condition is very severe, the economic performance of the tractor is ensured while the quality of related agricultural operation activities is ensured, and the optimal control process of the operation activities of the tractor is very complicated. In the field cultivation process of the tractor electro-hydraulic suspension system, the load fluctuation is large, the difference of working conditions of different agricultural implements is large, the landform and the appearance are different, and the existing traditional electro-hydraulic suspension device based on a pair of hydraulic cylinders (mostly common electro-hydraulic systems for reducing the cost, and an electro-hydraulic servo system which has more severe requirements on the use environment is not adopted), has the defects of single regulation function, poor adaptability and active regulation capability, poor control precision and stability and the like, greatly reduces the operation efficiency and the operation quality, and is difficult to adapt to the modernized development of agricultural machinery.

The important significance of solving the technical problems comprises the following steps:

the invention provides a dragging hydraulic machine suspension device with double adjusting functions, which realizes the adjustment of two different functions of thickness of the suspension height of the suspension device of an electro-hydraulic suspension device by respectively and independently controlling a thick hydraulic cylinder and a thin hydraulic cylinder, wherein the coarse adjusting function is mainly used for quickly lifting and lowering agricultural implements, and the fine adjusting function is mainly used for maintaining and controlling the operation position and the posture of the suspended agricultural implements. The electro-hydraulic suspension device is innovatively designed in structure and function, and the operation efficiency, the adaptability and the active adjustment capacity of the electro-hydraulic suspension device can be greatly improved through the subdivision of coarse adjustment and fine adjustment of the electro-hydraulic suspension device.

Disclosure of Invention

Aiming at the problems and the defects in the prior art, the invention provides a hydraulic suspension device with double adjusting functions, which is mainly applied to the rear suspension of a tractor to fix and move farm tools and is convenient for agricultural production. The system has the remarkable advantages of no pollution, more reasonable stress, improved force utilization efficiency, realization of combined action of coarse adjustment and fine adjustment, better stability, self-regulation capability and the like.

Therefore, the invention adopts the following technical scheme:

a hydraulic suspension device with double adjusting functions comprises a fine adjustment hydraulic cylinder, a movable box body, a coarse adjustment hydraulic cylinder, a support base, a fixed box body, an upper pull rod, a middle rod, a connecting rod, a load hanging frame and a lower pull rod, wherein one end of the fine adjustment hydraulic cylinder is installed on the support base, and the other end of the fine adjustment hydraulic cylinder is installed on the movable box body; the coarse adjustment hydraulic cylinder is arranged at the upper end of a movable box body, the movable box body is arranged in a fixed box body, and the fixed box body is fixed on the supporting base; the upper pull rod is arranged at the top of the movable box body, and the connecting rod is arranged between the upper pull rod and the lower pull rod; the upper pull rod, the connecting rod, the lower pull rod and the middle rod form a connecting rod mechanism and are stably connected with the load hanging rack through three-point connection; the load hanging rack is used for bearing farm tools.

Preferably, the fine adjustment hydraulic cylinder and the coarse adjustment hydraulic cylinder are installed in pairs and symmetrically arranged on two sides of the supporting base; the movable box and the fixed box are correspondingly installed in pairs.

Preferably, the coarse adjustment hydraulic cylinder is used in a coarse adjustment mode, and the fine adjustment hydraulic cylinder is used in a fine adjustment mode.

Preferably, the coarse adjustment hydraulic cylinder controls the rotation angle of the upper pull rod by changing the stroke of the piston rod in a coarse adjustment mode, so that the movement of the whole connecting rod mechanism is influenced, and the suspension device can greatly realize the function of lifting the farm tool.

Preferably, the fine adjustment hydraulic cylinder controls the stroke of the movable box body in the fixed box body by changing the stroke of the piston rod in the fine adjustment mode, so that the horizontal position of the lower pull rod is changed, the lower pull rod changes the rotating angle through the transmission of the connecting rod, and the load hanging rack is lifted or lowered in a small range.

Preferably, the movable box body is arranged inside the fixed box body through guide rails on two sides and a bottom pulley, and the bottom pulley of the movable box body is connected with a slide rail in the fixed box body and used for realizing horizontal stroke change; the guide rails on two sides of the movable box body mainly play roles in assisting the movement of the bottom pulley and limiting the movement direction of the movable box body; when the piston cylinder of the fine adjustment hydraulic cylinder operates, the stroke of the movable box body is changed along with the operation of the piston cylinder, and the fine adjustment hydraulic cylinder is used for fine adjustment of the height of the mode farm tool.

Preferably, the load hanging rack is fixed through three-point suspension and is used for bearing agricultural implements of different models.

Preferably, the upper pull rod is installed at the upper part of the movable box body, two sides of the connecting rod are respectively hinged to one end of the upper pull rod and the middle part of the lower pull rod, two points of the load hanging rack are hinged to the lower pull rod, and one point of the load hanging rack is hinged to the middle rod.

Preferably, the fixed box body is fixed on the supporting base through screw connection.

Preferably, hydraulic pressure linkage and thing networking APP with two regulatory functions carry out the interactive operation, pass through remote transmission to user side APP with the live-action image of hydraulic pressure linkage operation, and operating personnel realizes hydraulic pressure linkage's remote operation.

Compared with the prior art, the invention has the beneficial effects that:

(1) the suspension device structure with the coarse and fine adjusting functions is designed, lifting control of the farm tool can be carried out on a large scale, fine adjustment can be carried out on the farm tool in a small range, fine adjustment of the working position of the farm tool is achieved, and operation efficiency is greatly improved.

(2) The horizontal movement of the movable box body is controlled to realize the fine adjustment function of the suspension device, a brand-new connecting rod and pulley composite structure is designed, the stress state of the structure is improved, and the damage of the mechanism caused by unreasonable stress of the structure is avoided.

(3) Through the independent control of the coarse adjustment and the fine adjustment of the electro-hydraulic suspension device, the stability, the adaptability and the active adjustment capability of the suspension device in the working process are greatly enhanced.

(4) The box body assembly is of a detachable structure, and the assembly, the disassembly and the maintenance of the electro-hydraulic suspension device can be facilitated in the later period.

Drawings

Fig. 1 is a schematic structural diagram of a hydraulic suspension device with a dual adjustment function according to an embodiment of the present invention.

Fig. 2 is a detail view of the interior of the housing of a hydraulic suspension with dual adjustment provided by an embodiment of the present invention.

Fig. 3 is a flowchart illustrating the operation of a hydraulic suspension device with dual adjustment functions according to an embodiment of the present invention.

FIG. 4 is a schematic diagram illustrating coarse mode movement of a hydraulic suspension system having dual adjustment capability according to an embodiment of the present invention.

Fig. 5 is a schematic diagram of fine adjustment mode movement of a hydraulic suspension device with dual adjustment functions according to an embodiment of the present invention.

Description of reference numerals: 1. fine adjustment of the hydraulic cylinder; 2. the box body can be moved; 3. coarsely adjusting a hydraulic cylinder; 4. a support base; 5. fixing the box body; 6. an upper pull rod; 7. an intermediate lever; 8. a connecting rod; 9. a load hanger; 10. and a pull rod is pulled down.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings and specific embodiments, which are provided for illustration only and are not to be construed as limiting the invention.

Examples

As shown in fig. 1, the invention provides a hydraulic suspension device with double adjusting functions, which comprises a fine adjustment hydraulic cylinder 1, a movable box body 2, a coarse adjustment hydraulic cylinder 3, a support base 4, a fixed box body 5, an upper pull rod 6, an intermediate rod 7, a connecting rod 8, a lower pull rod 10 and a load hanger 9. The hydraulic suspension device is of a symmetrical structure, and the fine adjustment hydraulic cylinder 1, the movable box body 2, the coarse adjustment hydraulic cylinder 3, the fixed box body 5, the upper pull rod 6, the connecting rod 8 and the lower pull rod 10 are installed in pairs. The fine adjustment hydraulic cylinder 1 is installed at the rear end of the movable box body 2, the movable box body 2 is installed inside the fixed box body 5 through a guide rail pulley, the upper pull rod 6 is installed at the upper portion of the movable box body 2, two sides of the connecting rod 8 are respectively hinged to one end of the upper pull rod 6 and the middle portion of the lower pull rod 10, two points of the load hanging rack 9 are hinged to the lower pull rod 10, and one point of the load hanging rack is hinged to the middle rod 7. The other end of the intermediate lever 7 is hinged to the support base 4.

The fine adjustment hydraulic cylinder 1 and the coarse adjustment hydraulic cylinder 3 can realize lifting of the farm tool and adjustment of the ground clearance of the farm tool. The two sides of the hydraulic cylinder which correspondingly works can synchronously move during coarse adjustment or fine adjustment. When a single hydraulic cylinder breaks down, the hydraulic cylinder on the other side can still finish coarse adjustment and fine adjustment by independently operating, so that the working integrity and the working fluency of the suspension device are ensured. In contrast, coarse or fine adjustment can be accomplished more quickly and more effortlessly when the hydraulic cylinders are moved synchronously.

The mechanical structure of this embodiment is three point suspension mechanism, mainly includes intermediate lever 7, mated lower link 10, support base 4, and wherein, lower link 10 passes through the transmission of connecting rod 8, and when coarse adjustment pneumatic cylinder 3 or fine adjustment pneumatic cylinder 1 piston rod stroke change, connecting rod 8 drives lower link 10 and rotates, and the corner of intermediate lever 7 changes because the height of load stores pylon 9 changes.

As shown in fig. 2, the split case structure of the present embodiment includes a movable case 2 and a fixed case 5. The fixed box body 5 is fixed on the supporting base 4 through screw connection, and the movable box body 2 realizes directional movement in the fixed box body 5 through a guide rail pulley at the bottom and slide rails at two sides. Meanwhile, threaded holes are formed in the front end and the rear end of the movable box body 2 and are respectively connected with the fine adjustment hydraulic cylinder 1 and the coarse adjustment hydraulic cylinder 3, and the movement of the movable box body 2 influences the movement of the connecting rod.

Fig. 3 shows the operation flow of the multi-mode, multi-cylinder suspension apparatus according to the embodiment of the present invention, which includes two operation modes, coarse adjustment and fine adjustment. As shown in fig. 4, in the coarse adjustment mode, the fine adjustment hydraulic cylinder 1 keeps the stroke unchanged, the coarse adjustment hydraulic cylinder 3 can independently control the stroke of the piston rod, and the rotation angle of the upper pull rod 6 can be directly changed through the movement of the coarse adjustment hydraulic cylinder 3, so that the position of the lower pull rod 10 is influenced through the connecting rod 8, and the height of the farm implement is further greatly changed. As shown in fig. 5, after the coarse adjustment is finished, in the fine adjustment mode, the stroke of the coarse adjustment hydraulic cylinder 3 is unchanged, the fine adjustment hydraulic cylinder 1 can independently control the stroke of the piston rod, and the position of the movable box body 2 in the fixed box body 5 is changed through the movement of the fine adjustment hydraulic rod 1, so that the transverse position of the upper pull rod 6 is changed, and the height of the farm implement can be changed in a small range.

In later popularization and application, the method can be interactively operated with the Internet of things APP, namely live-action images operated by the suspension device are remotely transmitted to the user side APP, and an operator can remotely operate the suspension device.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and scope of the present invention are intended to be covered thereby.