Joint bearing device for inclined oil cylinder of forklift

Abstract

The utility model belongs to the technical field of forklifts, and particularly discloses a forklift tilting oil cylinder knuckle bearing device which comprises an oil cylinder lug ring and a radial knuckle bearing, the radial knuckle bearing is provided with a lug ring installation inner cavity, limiting blocks are symmetrically arranged in the lug ring installation inner cavity, and lug ring embedding grooves are formed in the sides, close to the axis of the radial knuckle bearing, of the limiting blocks. When the axial direction of the radial spherical plain bearing is perpendicular to the axial direction of the oil cylinder lug ring, the oil cylinder lug ring is installed in the lug ring installation inner cavity of the radial spherical plain bearing, the radial spherical plain bearing is rotated to enable the axial direction of the radial spherical plain bearing to coincide with the axial direction of the oil cylinder lug ring, and the oil cylinder lug ring is matched with the lug ring embedding groove. On the premise that the function of the radial spherical plain bearing is guaranteed and no assembling tool is used, rapid assembling is achieved.

Description

Technical Field

[0001] This utility model relates to the field of forklift technology, and in particular to a joint bearing device for a forklift tilting cylinder. Background Technology

[0002] With the development of the logistics industry, forklifts are becoming increasingly common. Forklifts load and unload goods via the mast, which tilts forward and backward using a tilting cylinder. Due to manufacturing errors in the mast and frame, forklift tilting cylinders are generally equipped with spherical bearings to prevent jamming caused by manufacturing errors when tilting the mast.

[0003] However, the most common type of spherical plain bearing assembly currently used in the industry is the combination of retaining ring and press-fit bearing. This type of assembly requires the inner and outer rings of the spherical plain bearing to be press-fitted using press-fitting equipment; furthermore, the spherical plain bearing and the cylinder clevis need to be fixed with retaining rings, resulting in low efficiency. Utility Model Content

[0004] The purpose of this invention is to solve the technical problems existing in the background art. To this end, a forklift tilting cylinder joint bearing device is provided, which can achieve rapid assembly without the aid of assembly tools while ensuring the function of the radial joint bearing.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A forklift tilting cylinder spherical bearing device includes a cylinder lug and a radial spherical bearing. The radial spherical bearing has a lug mounting cavity. Limiting blocks are symmetrically arranged in the lug mounting cavity. A lug embedding groove is formed on the side of the limiting block near the axis of the radial spherical bearing.

[0007] When the axial direction of the radial joint bearing is perpendicular to the axial direction of the cylinder lug, the cylinder lug is installed in the lug mounting cavity of the radial joint bearing. The radial joint bearing is rotated so that the axial direction of the radial joint bearing coincides with the axial direction of the cylinder lug, and the cylinder lug engages with the lug insertion groove.

[0008] The following is a further technical solution of this utility model: the earring insertion groove is adapted to the shape of the outer wall of the oil cylinder earring.

[0009] The following is a further defined technical solution of this utility model: the earring insertion groove is configured as a spherical groove, the outer wall of the oil cylinder earring is configured as a spherical wall, and the inner diameter of the earring insertion groove is the same as the diameter of the outer wall of the oil cylinder earring.

[0010] The following is a further defined technical solution of this utility model: the inner ring of the cylinder lug is connected to the output shaft of the cylinder.

[0011] The following is a further technical solution of this utility model: the side wall of the cylinder lug is provided with a plurality of lubricating oil flow ports, and the lubricating oil flow ports are located on the axial symmetry plane of the cylinder lug.

[0012] The following is a further defined technical solution of this utility model: the radial joint bearing is provided with an oil cup through hole, one end of the oil cup through hole is connected to an oil cup, and the other end of the oil cup through hole is connected to the earring insertion groove.

[0013] Compared with the prior art, the present invention has the following technical effects:

[0014] This invention provides a limiting block with an earring insertion groove in the earring mounting cavity of a radial spherical bearing. When the axial direction of the radial spherical bearing is perpendicular to the axial direction of the hydraulic cylinder earring, the hydraulic cylinder earring can be inserted into the earring mounting cavity of the radial spherical bearing. Rotating the radial spherical bearing causes its axial direction to coincide with that of the hydraulic cylinder earring, and the hydraulic cylinder earring engages with the earring insertion groove to form an axial locking effect. This allows for rapid assembly without the need for assembly tools, while ensuring the function of the radial spherical bearing.

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 yes Figure 1 Structural disassembly diagram;

[0019] Figure 3 This is a cross-sectional structural diagram of the present invention.

[0020] Reference numerals: 1. Oil cup; 2. Oil cylinder earring; 201. Lubricating oil inlet; 3. Radial spherical bearing; 4. Limiting block; 5. Earring insertion groove. Detailed Implementation

[0021] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0022] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0023] In this embodiment of the invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention according to the specific circumstances.

[0024] like Figure 1 As shown, a forklift tilting cylinder spherical bearing device is provided, mainly composed of an oil cup 1, a cylinder lug 2, and a radial spherical bearing 3. The cylinder lug 2 and the radial spherical bearing 3 cooperate to form an axial locking effect.

[0025] like Figure 2 and 3 As shown, the radial joint bearing 3 has an earring mounting cavity, and the earring mounting cavity is symmetrically provided with limiting blocks 4 (i.e., there are 2 limiting blocks 4, and the 2 limiting blocks 4 are symmetrically arranged in the earring mounting cavity). The limiting block 4 has an earring embedding groove 5 on the side near the axis of the radial joint bearing 3.

[0026] When the axial direction of the radial spherical bearing 3 is perpendicular to the axial direction of the cylinder lug 2, the cylinder lug 2 is inserted into the lug mounting cavity of the radial spherical bearing 3. Rotating the radial spherical bearing 3 causes its axial direction to coincide with that of the cylinder lug 2. The cylinder lug 2 then engages with the lug insertion groove 5, where the shape of the lug insertion groove 5 matches the outer wall shape of the cylinder lug 2, thus creating an axial locking effect. Specifically, the lug insertion groove 5 is a spherical groove, and the outer wall of the cylinder lug 2 is a spherical wall, with the inner diameter of the lug insertion groove 5 being the same as the diameter of the outer wall of the cylinder lug 2. The spherical shape of the outer wall of the cylinder lug 2 can be further understood as follows: the cylinder lugs 2 are symmetrically arranged along their axial direction, and the diameter of the outer wall of the cylinder lug 2 decreases sequentially from the center to both sides. In other words, the cylinder lug 2 is obtained by symmetrically cutting away the side portions of a sphere.

[0027] The cylinder lug 2 has multiple lubricating oil inlets 201 on its side wall, located on the axial symmetrical plane of the cylinder lug 2. The radial spherical bearing 3 has an oil cup through-hole, one end of which is connected to an oil cup 1, and the other end is connected to the lug insertion groove 5. Therefore, by opening the oil cup 1, lubricating oil (grease) is added to the moving part between the cylinder lug 2 and the radial spherical bearing 3, assisting the relative movement between them.

[0028] The inner ring of the cylinder lug 2 is connected to the output shaft of the cylinder.

[0029] The working process of this embodiment will be further described below:

[0030] The output shaft of the hydraulic cylinder is fixedly installed on the inner ring of the hydraulic cylinder lug 2;

[0031] The cylinder lug 2 is installed into the lug mounting cavity of the radial spherical bearing 3. Specifically: keeping the cylinder lug 2 stationary, the radial spherical bearing 3 is rotated so that its axis is perpendicular to the axis of the cylinder lug 2; the position of the radial spherical bearing 3 is moved so that the cylinder lug 2 is inserted into the lug mounting cavity of the radial spherical bearing 3, and then the radial spherical bearing 3 is rotated so that its axis coincides with the axis of the cylinder lug 2. The cylinder lug 2 and the lug insertion groove 5 cooperate to form an axial locking effect.

[0032] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any way. Any person skilled in the art can make many possible variations and modifications to the technical solution of this utility model using the disclosed methods and techniques, or modify it into equivalent embodiments with equivalent changes, without departing from the scope of the technical solution of this utility model. Therefore, all equivalent changes made based on the shape, structure, and principle of this utility model without departing from its technical solution should be covered within the protection scope of this utility model.

Claims

1. A forklift tilting cylinder spherical bearing device, characterized in that, It includes a cylinder earring (2) and a radial joint bearing (3). The radial joint bearing (3) has an earring mounting cavity. The earring mounting cavity is symmetrically provided with limiting blocks (4). The limiting blocks (4) have an earring embedding groove (5) on the side of the limiting block (4) close to the axis of the radial joint bearing (3). When the axial direction of the radial joint bearing (3) is perpendicular to the axial direction of the cylinder lug (2), the cylinder lug (2) is installed in the lug mounting cavity of the radial joint bearing (3). The radial joint bearing (3) is rotated so that the axial direction of the radial joint bearing (3) coincides with the axial direction of the cylinder lug (2), and the cylinder lug (2) cooperates with the lug insertion groove (5).

2. The forklift tilting cylinder spherical bearing device as described in claim 1, characterized in that, The earring insert (5) is adapted to the shape of the outer wall of the cylinder earring (2).

3. The forklift tilting cylinder joint bearing device as described in claim 2, characterized in that, The earring insert groove (5) is configured as a spherical groove, the outer wall of the cylinder earring (2) is configured as a spherical wall, and the inner diameter of the earring insert groove (5) is the same as the outer wall diameter of the cylinder earring (2).

4. The forklift tilting cylinder joint bearing device as described in claim 3, characterized in that, The inner ring of the cylinder lug (2) is connected to the output shaft of the cylinder.

5. A forklift tilting cylinder spherical bearing device as described in claim 2, characterized in that, The cylinder lug (2) has multiple lubricating oil flow ports (201) on its side wall, and the lubricating oil flow ports (201) are located on the axial symmetry plane of the cylinder lug (2).

6. The forklift tilting cylinder spherical bearing device as described in claim 5, characterized in that, The radial joint bearing (3) has an oil cup through hole, one end of which is connected to an oil cup (1), and the other end of which is connected to an earring insert groove (5).

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