CN219749439U - Oil cylinder suspension device of agricultural tractor - Google Patents

Abstract

The utility model discloses an oil cylinder suspension device of an agricultural tractor, which relates to the technical field of oil cylinders of tractors and solves the problems that the damping springs and the secondary springs are twisted when stressed and compressed due to the fact that the damping springs and the secondary springs are all round springs and the upper ends of the secondary springs are not connected, and the damping springs and the secondary springs are connected together in a staggered manner; according to the utility model, the secondary buffer assembly is arranged between the oil cylinder main body and the compression spring, the round springs in the secondary buffer assembly are limited by the sleeve, and the round springs are movably attached to the outer wall of the cylinder barrel of the oil cylinder main body, so that the round springs can be effectively prevented from being laterally deformed in the process of stressed compression, and the round springs and the compression spring can be prevented from being mutually connected in a staggered manner.

Description

Oil cylinder suspension device of agricultural tractor

Technical Field

The utility model relates to the technical field of oil cylinders of tractors, in particular to an oil cylinder suspension device of an agricultural tractor.

Background

The hydraulic cylinder is a linear motion type actuating element with output force being in direct proportion to the effective area of the piston and the pressure difference on two sides of the piston, and an oil cylinder suspension system is arranged between a frame and wheels of the agricultural tractor so as to buffer the frame;

the prior China patent publication 202023104637.5 discloses an oil cylinder suspension device of an agricultural tractor, wherein a damping spring and a secondary spring are arranged on the outer side of an oil cylinder, the length and the diameter of the secondary spring are smaller than those of the damping spring, and the damping spring and the secondary spring are round springs, so that when the load born by a footstock is larger than a certain threshold value, the secondary spring is stressed and compressed, and the damping effect of a supporting mechanism is improved;

but above-mentioned in the use, when the load is greater than certain threshold value secondary spring atress compression, because shock attenuation spring and secondary spring are the round spring to the upper end of secondary spring does not have the connection, can take place the side direction deformation when the atress compression for shock attenuation spring and secondary spring, and then can be in the same place in a staggered connection between messenger's shock attenuation spring and the secondary spring.

Disclosure of Invention

The present utility model is directed to an oil cylinder suspension device for an agricultural tractor, which can prevent compression and torsion of springs, and solve the problems set forth in the background art.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the oil cylinder suspension device of the agricultural tractor comprises an oil cylinder main body, wherein the oil cylinder main body consists of a cylinder barrel and a piston rod, two ends of the oil cylinder main body are hinged with hinge seats, the bottom of each hinge seat is fixedly provided with a fixed seat, the outer sides of the fixed seats are fixedly provided with bearings, two fixed seats face one end of the oil cylinder main body and are fixedly pressed relative to connecting rings, and compression springs are fixedly arranged between the two connecting rings; the secondary buffer assembly is used for assisting the compression spring to buffer and damp the oil cylinder main body, is arranged on the outer side of the oil cylinder main body and is positioned on the inner side of the compression spring.

Preferably, the secondary buffering component comprises a round spring movably attached to the outer wall of the cylinder barrel of the oil cylinder main body, the lower end of the round spring is fixedly connected with the fixing seat located at the lower side of the oil cylinder main body, and the round spring can share the pressure born by the compression spring.

Preferably, a sleeve is fixedly arranged at the upper end of the round spring, the sleeve is movably sleeved on the outer side of the cylinder barrel of the oil cylinder main body, and the sleeve can limit the round spring.

Preferably, the upper end of the sleeve is fixedly provided with a plurality of groups of connecting columns which are distributed at equal intervals in circumference, the upper ends of the plurality of groups of connecting columns are fixedly provided with compression rings, and the compression rings are convenient to contact with the connecting rings positioned on the upper side.

Preferably, the diameter of the inner ring of the compression ring is equal to that of the inner ring of the connecting ring, a plurality of groups of balls which are circumferentially equally spaced are embedded on the inner wall of the sleeve, the balls are in rolling connection with the cylinder barrel of the cylinder body, and the balls can reduce friction between the sleeve and the cylinder barrel of the cylinder body.

Preferably, the cross-sectional shape of the compression spring is elliptical.

Compared with the prior art, the utility model has the beneficial effects that:

according to the utility model, the secondary buffer assembly is arranged between the oil cylinder main body and the compression spring, the round springs in the secondary buffer assembly are limited by the sleeve, and the round springs are movably attached to the outer wall of the cylinder barrel of the oil cylinder main body, so that the round springs can be effectively prevented from being laterally deformed in the process of stressed compression, and the round springs and the compression spring can be prevented from being mutually connected in a staggered manner.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is a schematic diagram illustrating the disassembly of the present utility model;

FIG. 3 is a schematic side cross-sectional view of a secondary cushioning assembly of the present utility model;

fig. 4 is a schematic partial side cross-sectional view of a compression spring of the present utility model.

In the figure: 1. an oil cylinder main body; 2. a hinge base; 3. a fixing seat; 4. a bearing; 5. a secondary buffer assembly; 501. a round spring; 502. a sleeve; 503. a connecting column; 504. a compression ring; 505. a ball; 6. a connecting ring; 7. compressing the spring.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Example 1

Referring to fig. 1 and 2, an oil cylinder suspension device of an agricultural tractor in the drawings comprises an oil cylinder main body 1, wherein the oil cylinder main body 1 consists of a cylinder barrel and a piston rod, two ends of the oil cylinder main body 1 are hinged with a hinged seat 2, the bottom of the hinged seat 2 is fixedly provided with a fixed seat 3, the outer side of the fixed seat 3 is fixedly provided with a bearing 4, one end, facing the oil cylinder main body 1, of each fixed seat 3 is fixedly pressed with a connecting ring 6, and a compression spring 7 is fixedly arranged between the two connecting rings 6; the secondary buffer assembly 5 is used for assisting the compression spring 7 to buffer and shock-absorb the oil cylinder main body 1, and the secondary buffer assembly 5 is arranged on the outer side of the oil cylinder main body 1 and is positioned on the inner side of the compression spring 7.

Referring to fig. 2, the secondary buffer assembly 5 includes a round spring 501 movably attached to an outer wall of a cylinder of the cylinder body 1, and a lower end of the round spring 501 is fixedly connected to a fixing seat 3 located on a lower side of the cylinder body 1.

Referring to fig. 2, a sleeve 502 is fixedly installed at the upper end of a round spring 501, and the sleeve 502 is movably sleeved on the outer side of a cylinder barrel of the cylinder body 1.

Referring to fig. 2, a plurality of groups of connecting posts 503 are fixedly mounted at the upper end of the sleeve 502, and a pressing ring 504 is fixedly mounted at the upper end of the plurality of groups of connecting posts 503.

Referring to fig. 3, the diameter of the inner ring of the pressing ring 504 is equal to that of the inner ring of the connecting ring 6, a plurality of groups of balls 505 equally spaced circumferentially are embedded on the inner wall of the sleeve 502, and the balls 505 are connected with the cylinder of the cylinder body 1 in a rolling manner.

Working principle of preventing compression torsion of spring: when cylinder main part 1 atress, compression spring 7 atress compression carries out buffering shock attenuation to cylinder main part 1, when the load that cylinder main part 1 bore is greater than certain threshold value, go on the extrusion to clamping ring 504 by go on with go on, sleeve atress 502 atress can extrude round spring 501, the round spring 501 shares the pressure that compression spring 7 bore this moment, because round spring 501 and the outer wall activity laminating of cylinder main part 1 cylinder to the upper end fixedly connected with sleeve 502 of round spring 501 carries out spacingly to it, thereby can effectively prevent that round spring 501 atress from taking place lateral deformation, avoid round spring 501 and compression spring 7 crisscross winding.

Example 2

Referring to fig. 4, this embodiment further describes example 1 in which the cross-sectional shape of the compression spring 7 is elliptical.

In this embodiment: the cross section of the compression spring 7 is elliptical, so that the lateral deformation of the compression spring 7 caused by the stress can be effectively relieved.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process-method-article or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process-method-article or apparatus.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes-modifications-substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims (6)

1. The utility model provides an agricultural tractor's hydro-cylinder linkage, includes hydro-cylinder main part (1), hydro-cylinder main part (1) comprise cylinder and piston rod, articulated seat (2) are installed in the both ends of hydro-cylinder main part (1), the bottom fixed mounting of articulated seat (2) has fixing base (3), the outside fixed mounting of fixing base (3) has bearing (4), its characterized in that: the two fixing seats (3) are fixedly pressed against the connecting rings (6) towards one end of the oil cylinder main body (1), and compression springs (7) are fixedly arranged between the two connecting rings (6);

the secondary buffer assembly (5) is used for assisting the compression spring (7) to buffer and shock-absorb the oil cylinder main body (1), and the secondary buffer assembly (5) is installed on the outer side of the oil cylinder main body (1) and is located on the inner side of the compression spring (7).

2. The oil cylinder suspension apparatus of an agricultural tractor as defined by claim 1 wherein: the secondary buffer assembly (5) comprises a round spring (501) movably attached to the outer wall of the cylinder barrel of the oil cylinder main body (1), and the lower end of the round spring (501) is fixedly connected with the fixing seat (3) positioned on the lower side of the oil cylinder main body (1).

3. The oil cylinder suspension apparatus of an agricultural tractor as defined by claim 2 wherein: the upper end of the round spring (501) is fixedly provided with a sleeve (502), and the sleeve (502) is movably sleeved on the outer side of the cylinder barrel of the oil cylinder main body (1).

4. A suspension device for a cylinder of an agricultural tractor as defined by claim 3, wherein: the upper end of the sleeve (502) is fixedly provided with a plurality of groups of connecting columns (503) which are distributed at equal intervals in circumference, and the upper ends of the plurality of groups of connecting columns (503) are fixedly provided with compression rings (504).

5. The agricultural tractor cylinder suspension device according to claim 4, wherein: the diameter of the inner ring of the compression ring (504) is equal to that of the inner ring of the connecting ring (6), a plurality of groups of balls (505) which are circumferentially equally divided are embedded on the inner wall of the sleeve (502), and the balls (505) are connected with the cylinder barrel of the oil cylinder main body (1) in a rolling manner.

6. The oil cylinder suspension apparatus of an agricultural tractor as defined by claim 1 wherein: the cross section of the compression spring (7) is elliptical.