Hydraulic cylinder with thrust knuckle bearing

Abstract

The utility model discloses a hydraulic cylinder with a thrust knuckle bearing, which relates to the technical field of hydraulic cylinders, and comprises a cylinder body, one side of a thrust knuckle bearing shaft washer is fixedly connected with a compression ring, the surface of the compression ring is provided with a connecting hole, an elastic sheet is arranged in the connecting hole, and a fixing bolt is arranged between a positioning hole and the connecting hole. The plunger stretches out and draws back to drive the pressing ring to move, the grinding roller is driven to move through movement of the pressing ring, and stone is ground through the grinding roller. When a grinding roller grinds stone, vibration can be generated, the vibration is transmitted to a plunger through a pressing ring, the plunger of a cylinder body is affected by continuous lateral force, the transmitted lateral force is buffered and absorbed through mutual cooperation of an elastic piece, a thrust knuckle bearing seat ring and a thrust knuckle bearing shaft ring, and therefore the vibration can be effectively reduced. The thrust knuckle bearing shaft ring slightly rotates in the thrust knuckle bearing seat ring under the action of the elastic piece, lateral force is buffered through stretching and retracting of the elastic piece, and damage to the plunger is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic cylinders, in particular to a hydraulic cylinder with a thrust spherical bearing. Background Technique

[0002] A hydraulic cylinder is a hydraulic actuator that converts hydraulic energy into mechanical energy and performs linear reciprocating motion (or oscillating motion). It has a simple structure and reliable operation. When used to achieve reciprocating motion, it can eliminate the need for a speed reduction device, and there is no transmission gap, resulting in smooth motion. Therefore, it is widely used in the hydraulic systems of various machines. The output force of a hydraulic cylinder is proportional to the effective area of the piston and the pressure difference on both sides; a hydraulic cylinder basically consists of a cylinder barrel and a cylinder head, a piston and a piston rod, a sealing device, a buffer device, and an exhaust device. The buffer device and the exhaust device depend on the specific application scenario, while the other devices are essential.

[0003] Hydraulic cylinders are widely used in social production. For example, in the application of hydraulic cylinders in cement roller presses, the function of the hydraulic cylinder is to support the grinding roller. The output force of the hydraulic cylinder is transmitted to the grinding roller, and the purpose of crushing the aggregate is achieved through the grinding roller. The grinding roller is in a continuous fluctuating state during operation, and this fluctuating state is feedback to the hydraulic cylinder supporting the grinding roller, resulting in the plunger of the hydraulic cylinder being affected by a continuous lateral force. The traditional guide strip or metal guide on the hydraulic cylinder is difficult to resist this lateral force, ultimately leading to scratches on the plunger of the hydraulic cylinder, oil leakage, and a shortened service life of the hydraulic cylinder. Content of the Utility Model

[0004] (I) Technical Problems to be Solved

[0005] In view of the deficiencies of the prior art, the utility model provides a hydraulic cylinder with a thrust spherical bearing, which solves the problem that the traditional guide strip or metal guide on the hydraulic cylinder is difficult to resist lateral force, ultimately leading to scratches on the plunger of the hydraulic cylinder, oil leakage, and a shortened service life of the hydraulic cylinder.

[0006] Technical Solution

[0007] To achieve the above objectives, the utility model is realized through the following technical solutions: A hydraulic cylinder with a thrust spherical bearing, comprising: a cylinder body, a retaining ring is fixedly connected inside the cylinder body, a sealing guide ring is arranged inside the retaining ring, a plunger is slidably connected inside the cylinder body, positioning holes are circumferentially arranged on one side of the plunger, a limiting ring is fixedly connected inside the positioning holes, a thrust spherical bearing seat ring is arranged on one side of the limiting ring, a thrust spherical bearing race ring is rotatably connected inside the thrust spherical bearing seat ring, a pressure ring is fixedly connected on one side of the thrust spherical bearing race ring, connection holes are formed on the surface of the pressure ring, elastic pieces are arranged inside the connection holes, and fixing bolts are arranged between the positioning holes and the connection holes.

[0008] Preferably, a through hole is formed on one side of the cylinder body, and an oil injection hole is arranged on the surface of the cylinder body.

[0009] Preferably, a pressing plate is fixedly connected to one side of the pressing ring.

[0010] Preferably, the retaining ring is arranged at the central position inside the cylinder block, and the oil delivery holes are symmetrically arranged with respect to the retaining ring.

[0011] Preferably, the oil delivery holes communicate with the cylinder block, and a cavity is formed on the side of the plunger away from the pressing ring.

[0012] Preferably, a through hole for the fixing bolt to pass through is formed in the middle of the elastic sheet, and the connection holes and the positioning holes are arranged in one-to-one correspondence.

[0013] Preferably, the minimum inner diameter of the sealing guide ring is the same as the minimum inner diameter of the retaining ring, and the sealing guide ring is flush with the retaining ring.

[0014] Advantageous Effects

[0015] The utility model provides a hydraulic cylinder with a thrust joint bearing. Compared with the prior art, it has at least the following advantageous effects:

[0016] The movement of the pressing ring is driven by the telescopic movement of the plunger, and the movement of the grinding roller is driven by the movement of the pressing ring. The grinding roller is used to roll the stone material. When the grinding roller rolls the stone material, vibrations will be generated. The vibrations are transmitted to the plunger through the pressing ring, resulting in the plunger of the cylinder block being affected by continuous lateral forces. In this device, the transmitted lateral forces are buffered and absorbed through the mutual cooperation of the elastic sheet, the thrust joint bearing raceway and the thrust joint bearing shaft ring. Under the action of the elastic sheet, the thrust joint bearing shaft ring rotates slightly within the thrust joint bearing raceway to disperse the lateral force, and the elastic sheet expands and contracts to buffer the lateral force, reducing the damage to the plunger. Brief Description of the Drawings

[0017] Figure 1 is a schematic structural diagram of the utility model;

[0018] Figure 2 is an exploded view of the utility model;

[0019] Figure 3 is a schematic structural diagram of the installation of the elastic sheet of the utility model;

[0020] Figure 4 is a sectional view of the structure of the utility model.

[0021] In the figure: 1, cylinder block; 2, plunger; 3, sealing guide ring; 4, retaining ring; 5, thrust joint bearing raceway; 6, thrust joint bearing shaft ring; 7, pressing ring; 8, positioning hole; 9, connection hole; 10, limiting ring; 11, cavity; 12, through hole; 13, pressing plate; 14, elastic sheet; 15, oil delivery hole. Detailed Description of the Embodiment

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts belong to the protection scope of the present invention.

[0023] Embodiment 1:

[0024] Please refer to Figures 1-4 , the present invention provides a technical solution: a cylinder block 1, a retaining ring 4 is fixedly connected inside the cylinder block 1, a sealing guide ring 3 is arranged inside the retaining ring 4, a plunger 2 is slidably connected inside the cylinder block 1, positioning holes 8 are circumferentially arranged on one side of the plunger 2, a limiting ring 10 is fixedly connected inside the positioning holes 8, a thrust joint bearing seat ring 5 is arranged on one side of the limiting ring 10, a thrust joint bearing shaft ring 6 is rotatably connected inside the thrust joint bearing seat ring 5, a pressure ring 7 is fixedly connected on one side of the thrust joint bearing shaft ring 6, connection holes 9 are formed on the surface of the pressure ring 7, elastic pieces 14 are arranged inside the connection holes 9, and fixing bolts are arranged between the positioning holes 8 and the connection holes 9.

[0025] Analysis of the above content: Install the cement grinding roller on one side of the pressure ring 7, and roll the stone material through the grinding roller. During rolling, the grinding roller will vibrate up and down, generating a lateral force on the plunger 2, affecting the use of the cylinder block 1 and easily causing wear between the plunger 2 and the cylinder block 1. The thrust joint bearing seat ring 5 and the thrust joint bearing shaft ring 6 are provided. When vibration occurs, the thrust joint bearing shaft ring 6 can rotate inside the thrust joint bearing seat ring 5, and the thrust joint bearing seat ring 5 and the thrust joint bearing shaft ring 6 can cooperate with each other to bear a large axial load. Multiple groups of elastic pieces 14 are provided to limit the rotation angle of the thrust joint bearing shaft ring 6, buffer the lateral force, reduce the influence on the plunger 2, and improve the service life of the cylinder block 1.

[0026] Embodiment 2:

[0027] Please refer to Figures 1-4 , based on Embodiment 1, the present invention provides a technical solution: a through hole 12 is opened on one side of the cylinder block 1, and an oil delivery hole 15 is arranged on the surface of the cylinder block 1.

[0028] Analysis of the above content: The oil delivery hole 15 is provided to adjust the moving direction of the plunger 2.

[0029] Embodiment 3:

[0030] Please refer to Figures 1-4 , based on Embodiment 1, the present invention provides a technical solution: a pressing plate 13 is fixedly connected on one side of the pressure ring 7.

[0031] Analysis of the above content: When installing between the pressure ring 7 and the cement grinding roll, a pressing plate 13 is provided to provide buffering, reduce the transmission of vibration, and reduce the wear on the pressure ring 7.

[0032] Example 4:

[0033] Please refer to Figures 1-4 , based on Example 1, the present utility model provides a technical solution: The retaining ring 4 is arranged at the central position inside the cylinder block 1, and the oil delivery holes 15 are symmetrically arranged with respect to the retaining ring 4. The minimum inner diameter of the sealing guide ring 3 is the same as the minimum inner diameter of the retaining ring 4, and the sealing guide ring 3 is arranged flush with the retaining ring 4.

[0034] Analysis of the above content: The sealing guide ring 3 is limited and installed by the retaining ring 4, and the sealing performance between the cylinder block 1 and the plunger 2 is improved through the sealing guide ring 3 to avoid leakage of hydraulic oil. The plunger 2 slides within the retaining ring 4 and the sealing guide ring 3.

[0035] Example 5:

[0036] Please refer to Figures 1-4 , based on Example 1, the present utility model provides a technical solution: The oil delivery hole 15 is communicated with the cylinder block 1, and a cavity 11 is opened on the side of the plunger 2 away from the pressure ring 7.

[0037] Analysis of the above content: The hydraulic oil is communicated through the oil delivery hole 15, the moving direction of the plunger 2 is controlled by changing the flow direction of the hydraulic oil, and the cavity 11 is provided to facilitate the hydraulic oil to push the plunger 2 to slide within the cylinder block 1.

[0038] Example 6:

[0039] Please refer to Figures 1-4 , based on Example 1, the present utility model provides a technical solution: A through hole for the fixing bolt to pass through is provided in the middle of the elastic piece 14, and the connecting holes 9 and the positioning holes 8 are arranged in one-to-one correspondence.

[0040] Analysis of the above content: The fixing bolt is inserted between the connecting hole 9 and the positioning hole 8 to fix the pressure ring 7 and the plunger 2. When the pressure ring 7 is subjected to a lateral force, it drives the thrust joint bearing race 6 to rotate within the thrust joint bearing seat 5. When the thrust joint bearing race 6 rotates, under the action of the fixing bolt, the elastic piece 14 will be squeezed, and the lateral force is buffered through the elastic piece 14 to reduce the damage between the cylinder block 1 and the plunger 2.

[0041] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements not only includes those elements but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.

[0042] Although embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. Hydraulic cylinder with thrust joint bearing, characterized in that Comprising: A cylinder block (1), fixedly connected with a retaining ring (4) inside the cylinder block (1), a sealing guide ring (3) is arranged inside the retaining ring (4), a plunger (2) is slidably connected inside the cylinder block (1), positioning holes (8) are circumferentially arrayed on one side of the plunger (2), a limiting ring (10) is fixedly connected inside the positioning holes (8), a thrust joint bearing seat ring (5) is arranged on one side of the limiting ring (10), a thrust joint bearing shaft ring (6) is rotatably connected inside the thrust joint bearing seat ring (5), a pressure ring (7) is fixedly connected on one side of the thrust joint bearing shaft ring (6), connection holes (9) are formed on the surface of the pressure ring (7), elastic pieces (14) are arranged inside the connection holes (9), and fixing bolts are arranged between the positioning holes (8) and the connection holes (9).

2. The hydraulic cylinder with a thrust spherical plain bearing according to claim 1, wherein: A through hole (12) is formed on one side of the cylinder block (1), and an oil delivery hole (15) is arranged on the surface of the cylinder block (1).

3. The hydraulic cylinder with a thrust joint bearing according to claim 1, characterized in that: A pressing plate (13) is fixedly connected on one side of the pressure ring (7).

4. The hydraulic cylinder with a thrust spherical plain bearing according to claim 2, characterized in that: The retaining ring (4) is arranged at the central position inside the cylinder block (1), and the oil delivery holes (15) are symmetrically arranged with respect to the retaining ring (4).

5. The hydraulic cylinder with a thrust spherical plain bearing according to claim 2, characterized in that: The oil delivery holes (15) communicate with the cylinder block (1), and a cavity (11) is formed on the side of the plunger (2) far from the pressure ring (7).

6. The hydraulic cylinder with a thrust spherical plain bearing according to claim 1, wherein: A through hole for the fixing bolt to pass through is formed in the middle of the elastic piece (14), and the connection holes (9) and the positioning holes (8) are arranged in one-to-one correspondence.

7. The hydraulic cylinder with a thrust joint bearing according to claim 1, characterized in that: The minimum inner diameter of the sealing guide ring (3) is the same as the minimum inner diameter of the retaining ring (4), and the sealing guide ring (3) is flush with the retaining ring (4).

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