Single-cylinder small four-wheel-modified external double-cylinder hydraulic strong lifting device

Abstract

The utility model provides a single-cylinder small four-wheel-modified external double-cylinder hydraulic strong lifting device, which is characterized in that the lower ends of two jacking oil cylinders are rotationally mounted on the left side and the right side of the rear part of the single-cylinder small four-wheel through mounting seats, a hinged jacking rod is arranged above the rear part of the single-cylinder small four-wheel, and a U-shaped connecting seat is arranged at the upper end of each jacking oil cylinder; the upper end of the connecting rod is hinged to the connecting seat; the rear end of the lifting frame is rotationally connected with the lower part of the rear part of the single-cylinder small four-wheel; the lower end of the connecting rod is hinged to the middle of the lifting frame. The double-cylinder design in the device provides stronger lifting force, and the working efficiency and the adaptability are improved; the running stability and reliability of the device are ensured by a reasonable structure and a reasonable connection mode, and the fault occurrence probability is reduced; the length-adjustable connecting rod enables the device to better adapt to different operation conditions and requirements of farm tools; and the whole device is simple in structure and easy to install, maintain and adjust, and the use cost and the maintenance difficulty are reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to agricultural machinery technical field, more particularly, relates to a single cylinder small four-wheel improved external double cylinder hydraulic strong lifting device. BACKGROUND

[0002] In agricultural production, single cylinder small four-wheel tractor is widely used in farmland operation, transportation and other fields due to its simple structure, convenient operation, low price and other advantages. However, with the development of agricultural production and the improvement of operation requirements, the original lifting device of single cylinder small four-wheel tractor gradually exposes some deficiencies in function and performance. The traditional single cylinder small four-wheel lifting device often adopts single oil cylinder driving, and its lifting force is limited, and the stability and reliability are insufficient, which is difficult to meet the needs of complex operation environment and diversified farm tools. In actual operation, such as plowing, seeding and harvesting, accurate, fast and stable lifting operation of farm tools is required to ensure the operation quality and efficiency. However, due to the limitation of structure and performance, the existing lifting device may cause problems such as inaccurate lifting of farm tools, slow speed and laborious operation, which affects the smooth progress of agricultural production. In addition, the maintenance and adjustment of traditional lifting device are relatively complicated, which increases the use cost and maintenance difficulty. SUMMARY

[0003] The utility model discloses just based on above-mentioned technical problem, proposes a single cylinder small four-wheel improved external double cylinder hydraulic strong lifting device.

[0004] A single cylinder small four-wheel improved external double cylinder hydraulic strong lifting device, comprising: jacking oil cylinder, connecting rod, lifting frame, two the lower end of jacking oil cylinder is rotatably installed in the left and right sides of single cylinder small four-wheel rear through mounting seat, the top of single cylinder small four-wheel rear is equipped with articulated top rod, the upper end of jacking oil cylinder is equipped with U-shaped connecting seat, the connecting seat is rotatably connected with the outer end of top rod, the upper end of connecting rod is articulated with connecting seat;The rear end of lifting frame is rotatably connected with the lower part of single cylinder small four-wheel rear, and the lower end of connecting rod is articulated in the middle part of lifting frame.

[0005] Preferably, the mounting seat is a U-shaped seat, a pin shaft is arranged in the middle part of the mounting seat, a ball is arranged in the middle part of the pin shaft, the lower end of the jacking oil cylinder is provided with a ball hole rotatably matched with the ball, a fixed plate is arranged at the rear part of the mounting seat, and the fixed plate is connected and fixed with the single cylinder small four-wheel through a fixed pin.

[0006] Preferably, the connecting seat is a U-shaped seat, which is composed of two edge ears and a bottom plate, a connecting shaft is arranged between the edge ears, the front end of the top rod is provided with a ball hole, and the ball hole is rotatably matched and connected with the ball body in the middle part of the connecting shaft, and the upper end of the connecting rod is articulated with the connecting shaft.

[0007] Preferably, both ends of the connecting rod are provided with a hinged seat, and the hinged seat at the upper end is hinged on the connecting shaft, and the hinged seat at the lower end is connected with the middle part of the lifting frame.

[0008] Preferably, the length of the connecting rod is adjustable, which is composed of a main rod and two screw rods, the two screw rods are threadedly connected at both ends of the main rod, nuts are arranged on the screw rods to lock the screw rods and the main rod, and the other ends of the screw rods are threadedly connected with the hinged seats.

[0009] Beneficial effects: first, the double-cylinder design provides stronger lifting power, improves work efficiency and adaptability; second, the reasonable structure and connection mode ensure the stability and reliability of the device operation, reduces the probability of failure; third, the adjustable length of the connecting rod makes the device better adapt to different working conditions and farm tool requirements; finally, the overall device structure is simple, easy to install, maintain and adjust, reduces the use cost and maintenance difficulty. BRIEF DESCRIPTION OF DRAWINGS

[0010] Fig. 1 A single-cylinder structure schematic view of the utility model is shown;

[0011] Fig. 2 A double-cylinder structure schematic view of the utility model is shown;

[0012] Fig. 3 A structure schematic view of the utility model provided with a bottom rod is shown. DETAILED DESCRIPTION

[0013] In order to enable one skilled in the art to more clearly understand the above-mentioned purposes, features and advantages of the utility model, the utility model will be further described in detail below in combination with the drawings and specific embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0014] As Figs. 1-3 shown in a single-cylinder small four-wheel external double-cylinder hydraulic strong lifting device, the device comprises a jacking cylinder 1, a connecting rod 2 and a lifting frame 3.

[0015] Two jacking cylinders 1 are rotatably installed on the left and right sides of the rear part of the single-cylinder small four-wheel through mounting seats 4, and the specific installation position is on the rear axle gearbox of the single-cylinder small four-wheel, which provides strong power for lifting operation, a hinged top rod 5 is arranged above the rear part of the single-cylinder small four-wheel, the upper end of the jacking cylinder 1 is provided with a U-shaped connecting seat 6, the connecting seat 6 is rotatably connected with the outer end of the top rod 5, the upper end of the connecting rod 2 is hinged with the connecting seat 6, and the force transmission and motion conversion are realized.

[0016] The rear end of the lifting frame 3 is rotationally connected with the lower part of the single-cylinder small four-wheel rear part, the lower end of the connecting rod 2 is hinged in the middle part of the lifting frame 3, the lifting frame 3 is lifted and lowered by driving the connecting rod 2 to move through the extension of the jacking oil cylinder 1.

[0017] As a further improvement, the mounting seat 4 is a U-shaped seat, a pin shaft 8 is arranged in the middle part of the mounting seat 4, a ball 7 is arranged in the middle part of the pin shaft 8, the lower end of the jacking oil cylinder 1 is provided with a ball hole rotationally matched with the ball 7, a fixed plate 10 is arranged at the rear part of the mounting seat 4, the fixed plate 10 is fixedly connected with the single-cylinder small four-wheel through a fixed pin 9, and the stability and flexibility of the jacking oil cylinder 1 are ensured.

[0018] The connecting seat 6 is a U-shaped seat, which is composed of two side ears 61 and a bottom plate 62, a connecting shaft 63 is arranged between the side ears 61, the front end of the top rod 5 is provided with a ball hole and is rotationally matched with a ball 64 in the middle part of the connecting shaft 63, the upper end of the connecting rod 2 is hinged with the connecting shaft 63, and the reliability of the connection and the smoothness of the movement are ensured.

[0019] The two ends of the connecting rod 2 are provided with hinged seats 11, the hinged seat 11 at the upper end is hinged with the connecting shaft 63, and the hinged seat 11 at the lower end is arranged at the middle part of the lifting frame 3, so that the connecting rod 2 is conveniently connected with other components and transmits the movement.

[0020] The length of the connecting rod 2 is adjustable, which is composed of a main rod 201 and two screw rods 202, the two screw rods 202 are threadedly connected at the two ends of the main rod 201, nuts 203 are arranged on the screw rods 202 to lock the screw rods 202 and the main rod 201, and the other end of the screw rod 202 is threadedly connected with the hinged seat 11, so that the length of the connecting rod 2 can be adjusted according to actual needs, and the performance of the lifting device is optimized.

[0021] As a further improvement, a bottom rod 13 is further arranged outside the lifting frame 3, a transverse seat 14 is arranged outside the middle part of the lifting frame 3, the front end of the bottom rod 13 is rotationally connected with the transverse seat 14, the connecting mode can adopt a ball joint mode, and the rear end of the bottom rod 13 is rotationally connected to a rear axle half shaft sleeve pipe, and the connecting structure also adopts a rotatable ball joint mode.

[0022] The above only describes preferred embodiments of the present application and is not used to limit the present application. For those skilled in the art, the present application can be variously changed and modified. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A single-cylinder small four-wheel modified external double-cylinder hydraulic strong lifting device, characterized in that, The utility model relates to a lifting device for single cylinder small four-wheel, which comprises a lifting oil cylinder, a connecting rod and a lifting frame. The mounting seat is a U-shaped seat, the middle part of the mounting seat is provided with a pin shaft, the middle part of the pin shaft is provided with a ball, the lower end of the lifting oil cylinder is provided with a ball hole which is rotationally matched with the ball, the rear part of the mounting seat is provided with a fixed plate, and the fixed plate is fixedly connected with the single cylinder small four-wheel through a fixed pin.

2. The single-cylinder small four-wheel modified external double-cylinder hydraulic strong lifting device according to claim 1, characterized in that, The connecting seat is a U-shaped seat which is composed of two side ears and a bottom plate, a connecting shaft is arranged between the side ears, the front end of the top rod is provided with a ball hole which is rotationally matched with a ball body in the middle part of the connecting shaft, and the upper end of the connecting rod is hingedly connected with the connecting shaft.

3. The single-cylinder small four-wheel modified external double-cylinder hydraulic strong lifting device according to claim 1, characterized in that, Both ends of the connecting rod are provided with hinged seats, the hinged seat at the upper end is hingedly connected with the connecting shaft, and the hinged seat at the lower end is connected with the middle part of the lifting frame.

4. The single-cylinder small four-wheel modified external double-cylinder hydraulic strong lifting device according to claim 3, characterized in that, The length of the connecting rod is adjustable, and the connecting rod is composed of a main rod and two screw rods, the two screw rods are threadedly connected at both ends of the main rod, nuts are arranged on the screw rods to lock the screw rods and the main rod, and the other ends of the screw rods are threadedly connected with the hinged seats.

5. The single-cylinder small four-wheel modified external double-cylinder hydraulic strong lifting device according to claim 4, characterized in that, ​

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