Piston rod of hydraulic cylinder

Abstract

The utility model provides a hydraulic cylinder piston rod, which relates to the technical field of piston rods and comprises a first rod body. When in use, the second rod body is pressed to extrude the spring to contract and enable the second plug to be separated from the first plug, so that the second rod body can be freely rotated, the effect of adjusting the angle of a workpiece connected with the top end is achieved, the second rod body is loosened after adjustment is completed, and the second rod body is reset under the action of the spring. The first plug and the second plug are meshed again, at the moment, the second rod body cannot rotate, then the mounting sleeve is rotated and tightened to be in threaded connection with the threaded sleeve, and the first rod body and the second rod body can be fixed, so that the hydraulic cylinder piston rod composed of the second rod body and the first rod body has a rotating function; when the connecting workpiece is connected with the pushed object, the angle of the connecting workpiece can be easily adjusted to enable the connecting workpiece to correspond to the connecting position of the pushed object, the connecting and mounting difficulty is lowered, and the practicability and convenience are high.

Description

Technical Field

[0001] The utility model relates to the technical field of piston rods, in particular to a hydraulic cylinder piston rod. Background Art

[0002] The piston rod is an important component for transmitting force in the hydraulic cylinder. It is connected to the piston of the hydraulic cylinder and can convert hydraulic energy into mechanical energy to drive the load to move.

[0003] In the prior art, for example, Chinese patent publication number CN219865703U discloses a hydraulic cylinder piston rod, including a rod body and a piston and earrings respectively fixed at both ends of the rod body, a bearing is arranged in the inner hole of the earring, the bearing includes an inner ring and an outer ring fixed to the earring, there are two bearings and they are arranged in parallel along the axial direction of the earring; a press sleeve is coaxially arranged between the two inner rings, the inner diameter of the press sleeve is larger than the inner diameter of the inner ring, and the two end surfaces of the press sleeve are respectively pressed tightly on the two inner rings; a limiting structure for limiting the two outer rings from moving away from each other is provided on the earring. The hydraulic cylinder piston rod has a strong load capacity.

[0004] Although the above patent solves the problem of weak load capacity of the existing piston rod, the hydraulic cylinder piston rod is mainly connected to the pushed object through the connecting workpiece at the end when connecting to the equipment, and the existing hydraulic cylinder piston rod has a simple structure and does not have a rotation function. Therefore, when connecting to the pushed object through the top connecting workpiece, it is necessary to adjust the angle of the connecting workpiece according to the position of the hydraulic cylinder and the pushed object. The adjustment steps are cumbersome and the convenience of use needs to be improved. Therefore, in response to the above problems, we propose a new type of hydraulic cylinder piston rod. Utility Model Content

[0005] The utility model aims to solve the problems in the prior art that the existing hydraulic cylinder piston rod has a simple structure and does not have a rotation function. Therefore, when connecting the connecting workpiece and the pushed object through the top, it is necessary to adjust the angle of the connecting workpiece according to the positions of the hydraulic cylinder and the pushed object, the adjustment steps are cumbersome, and the convenience of use needs to be improved. A hydraulic cylinder piston rod is proposed to solve the problems that

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a hydraulic cylinder piston rod, comprising a first rod shaft, a second rod shaft is arranged above the first rod shaft, a connecting sleeve is fixedly connected to the top of the first rod shaft near the edge, a plurality of first plugs are fixedly connected to the inner surface wall of the connecting sleeve near the top at equal intervals, a fixing sleeve is fixedly connected to the outer surface of the second rod shaft near the bottom, a plurality of second plugs are evenly arranged on the top of the fixing sleeve, a plane bearing is fixedly connected between the second rod shaft and the bottom of the fixing sleeve, and a spring is arranged between the bottom of the plane bearing and the top of the first rod shaft.

[0007] Preferably, the bottom end of the first plug is arranged in an arc shape, and the top end of the second plug is arranged in an inclined shape.

[0008] Preferably, the distance between adjacent first plugs is consistent with the width of the second plug, and the distance between adjacent second plugs is consistent with the width of the first plug.

[0009] Preferably, the outer surface of the second shaft is fixedly connected to a limiting ring, and a mounting sleeve is sleeved on the outer surface of the second shaft above the limiting ring.

[0010] Preferably, a threaded sleeve is fixedly connected to the top of the connecting sleeve, and the outer surface of the threaded sleeve and the inner surface wall of the mounting sleeve are threadedly connected.

[0011] Preferably, a movable groove is provided at the top center of the first rod body, a movable rod is slidably arranged inside the movable groove, and a circular sleeve is fixedly connected to the bottom of the plane bearing.

[0012] Preferably, the inner surface wall of the movable groove is symmetrically provided with limiting grooves, the outer surface of the movable rod is symmetrically fixedly connected with limiting strips, the top end of the movable rod is inserted into the inside of the circular sleeve, and the limiting strips and limiting grooves correspond to each other.

[0013] Compared with the prior art, the advantages and positive effects of the utility model are:

[0014] 1. In the utility model, when in use, the second shaft can be freely rotated by pressing the second shaft to squeeze the spring to contract and make the second plug and the first plug disengage, thereby adjusting the angle of the top connected workpiece. After the adjustment is completed, the second shaft is loosened, and the second shaft is reset under the action of the spring, and the first plug and the second plug are re-engaged. At this time, the second shaft cannot be rotated, and then the mounting sleeve is tightened to make it threadedly connected with the threaded sleeve to complete the fixing of the first shaft and the second shaft. This design enables the hydraulic cylinder piston rod composed of the second shaft and the first shaft to have a rotation function. When connecting the workpiece and the pushed object, the angle of the connected workpiece can be easily adjusted to correspond to the connection position of the pushed object, which reduces the difficulty of connection and installation and has a high degree of practical convenience.

[0015] 2. In the utility model, a movable groove is provided at the top of the first rod body to accommodate the movable rod, so that the movable rod can move up and down, and the limit bar and the limit groove cooperate to limit the rotation of the movable rod. At the same time, the top of the movable rod is inserted into the fixed sleeve at the bottom of the plane bearing. Therefore, under the action of the movable rod, the plane washer under the plane bearing will not rotate, thereby effectively eliminating the problem of spring twisting and damage when the second rod body rotates, thereby improving the reliability of the piston rod of the hydraulic cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A three-dimensional diagram of a hydraulic cylinder piston rod is proposed for the utility model;

[0017] Figure 2 A cross-sectional view of a hydraulic cylinder piston rod is provided for the utility model;

[0018] Figure 3 A cross-sectional view of a first rod structure of a hydraulic cylinder piston rod is provided for the utility model;

[0019] Figure 4 The utility model provides a second rod body development diagram of a hydraulic cylinder piston rod;

[0020] Figure 5 The utility model provides a structural schematic diagram of a connecting sleeve of a hydraulic cylinder piston rod.

[0021] Legend: 1. First rod shaft; 11. Movable groove; 12. Limiting groove; 13. Movable rod; 14. Limiting strip; 2. Spring; 3. Connecting sleeve; 31. Threaded sleeve; 32. First plug; 4. Second rod shaft; 41. Limiting ring; 42. Mounting sleeve; 5. Plane bearing; 51. Round sleeve; 6. Fixed sleeve; 61. Second plug. DETAILED DESCRIPTION

[0022] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described below in conjunction with the accompanying drawings and 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.

[0023] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

[0024] Embodiment 1, as Figure 1-Figure 5As shown, the utility model provides a hydraulic cylinder piston rod, comprising a first rod shaft 1, a second rod shaft 4 is arranged above the first rod shaft 1, a connecting sleeve 3 is fixedly connected to the top of the first rod shaft 1 near the edge, a plurality of first plugs 32 are fixedly connected to the inner surface wall of the connecting sleeve 3 near the top at equal intervals, a fixing sleeve 6 is fixedly connected to the outer surface of the second rod shaft 4 near the bottom, a plurality of second plugs 61 are evenly arranged on the top of the fixing sleeve 6, a plane bearing 5 is fixedly connected between the second rod shaft 4 and the bottom of the fixing sleeve 6, and the bottom of the plane bearing 5 and the first rod shaft are fixedly connected. 1, a spring 2 is arranged between the tops of the first plug 32, the bottom end of the first plug 32 is arranged in an arc shape, the top end of the second plug 61 is arranged in an inclined manner, the distance between adjacent first plugs 32 is consistent with the width of the second plug 61, and the distance between adjacent second plugs 61 is consistent with the width of the first plug 32, the outer surface of the second shaft 4 is fixedly connected to the limiting ring 41, and the outer surface of the second shaft 4 is located above the limiting ring 41. The position of the mounting sleeve 42 is sleeved, and the top of the connecting sleeve 3 is fixedly connected with the threaded sleeve 31, and the outer surface of the threaded sleeve 31 and the inner surface wall of the mounting sleeve 42 are threadedly connected.

[0025] The effect achieved by the entire embodiment 1 is that, when in use, by pressing the second shaft 4 toward the first shaft 1, the second shaft 4 will squeeze the spring 2 in the connecting sleeve 3 to shrink. At this time, the second plug 61 on the second shaft 4 will be offset from the first plug 32 in the connecting sleeve 3. At this time, the second shaft 4 can be rotated to directly adjust the angle of the connected workpiece at the end. After the adjustment is completed, the second shaft 4 is released and the spring 2 loses pressure and rebounds to push the second shaft 4 to reset. At this time, the second plug 61 on the second shaft 4 will be inserted into the groove between the first plug 32 as it moves upward, completing the fixation of the second shaft 4. Subsequently, the mounting sleeve 42 is rotated to connect it with the threaded sleeve 31, and both the first shaft 1 and the second shaft 4 can be fixed. This design The hydraulic cylinder piston rod composed of the second rod body 4 and the first rod body 1 has a rotation function. When connecting the workpiece with the pushed object, the angle of the connecting workpiece can be easily adjusted to make it correspond to the connection position of the pushed object, which reduces the difficulty of connection and installation, and has high practical convenience. The limit ring 41 limits the maximum descent height of the installation sleeve 42. By setting the plane bearing 5, the sliding friction between the second rod body 4 and the spring 2 when rotating is converted into rolling friction, which reduces the damage to the spring 2. The bottom end of the first plug 32 is arc-shaped, and the top end of the second plug 61 is inclined. This design ensures that when the top end of the second plug 61 conflicts with the bottom end of the first plug 32, the second plug 61 will adaptively slide into the groove on the side of the first plug 32.

[0026] Embodiment 2, as Figure 1-Figure 5As shown, a movable groove 11 is provided at the top center of the first rod body 1, a movable rod 13 is slidably arranged inside the movable groove 11, a circular sleeve 51 is fixedly connected to the bottom of the plane bearing 5, limiting grooves 12 are symmetrically provided on the inner surface wall of the movable groove 11, and a limiting strip 14 is symmetrically fixedly connected to the outer surface of the movable rod 13, and the top end of the movable rod 13 is inserted into the inside of the circular sleeve 51, and the limiting strip 14 corresponds to the limiting groove 12.

[0027] The effect achieved by the entire embodiment 2 is that a movable groove 11 is opened at the top of the first rod body 1 to accommodate the movable rod 13, so that the movable rod 13 can move up and down, and with the cooperation of the limit bar 14 and the limit groove 12, it plays a role in limiting the rotation of the movable rod 13. At the same time, the top of the movable rod 13 is inserted into the fixed sleeve 6 at the bottom of the plane bearing 5. Therefore, under the action of the movable rod 13, the plane washer under the plane bearing 5 will not rotate, thereby effectively eliminating the problem that the spring 2 will be twisted and damaged when the second rod body 4 rotates, thereby improving the reliability of the piston rod of the hydraulic cylinder.

[0028] Working principle: When in use, by pressing the second rod shaft 4 toward the first rod shaft 1, the second rod shaft 4 will squeeze the spring 2 in the connecting sleeve 3 to shrink. At this time, the second plug 61 on the second rod shaft 4 will be offset from the first plug 32 in the connecting sleeve 3. At this time, the second rod shaft 4 can be rotated to directly adjust the angle of the connecting workpiece at the end. After the adjustment is completed, the second rod shaft 4 is released and the spring 2 loses pressure and rebounds to push the second rod shaft 4 to reset. At this time, the second plug 61 on the second rod shaft 4 will be inserted into the groove between the first plug 32 when it moves upward, completing the fixation of the second rod shaft 4. Subsequently, the mounting sleeve 42 is rotated to connect it with the threaded sleeve 31, and the first rod shaft 1 and the second rod shaft 4 can be fixed. This design makes the second rod shaft 4 and the first rod shaft 1 composed of The piston rod of the hydraulic cylinder has a rotation function. When connecting the workpiece with the pushed object, the angle of the connecting workpiece can be easily adjusted to make it correspond to the connection position of the pushed object, which reduces the difficulty of connection and installation and has high practical convenience. In addition, by opening a movable groove 11 at the top of the first rod body 1 to accommodate the movable rod 13, the movable rod 13 can move up and down, and with the cooperation of the limit bar 14 and the limit groove 12, it plays a role in limiting the rotation of the movable rod 13. At the same time, the top of the movable rod 13 is inserted into the fixed sleeve 6 at the bottom of the plane bearing 5. Therefore, under the action of the movable rod 13, the plane washer under the plane bearing 5 will not rotate, thereby effectively eliminating the problem of twisting and damage of the spring 2 when the second rod body 4 rotates, thereby improving the reliability of the piston rod of the hydraulic cylinder.

[0029] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A hydraulic cylinder piston rod, comprising a first rod shaft (1), characterized in that: A second rod shaft (4) is arranged above the first rod shaft (1); a connecting sleeve (3) is fixedly connected to the top of the first rod shaft (1) near the edge; a plurality of first plugs (32) are fixedly connected to the inner surface wall of the connecting sleeve (3) near the top at equal intervals; a fixing sleeve (6) is fixedly connected to the outer surface of the second rod shaft (4) near the bottom; a plurality of second plugs (61) are arranged at equal intervals on the top of the fixing sleeve (6); a plane bearing (5) is fixedly connected between the second rod shaft (4) and the bottom of the fixing sleeve (6); and a spring (2) is arranged between the bottom of the plane bearing (5) and the top of the first rod shaft (1).

2. The hydraulic cylinder piston rod according to claim 1, characterized in that: The bottom end of the first plug (32) is arranged in an arc shape, and the top end of the second plug (61) is arranged in an inclined shape.

3. The hydraulic cylinder piston rod according to claim 2, characterized in that: The distance between adjacent first plugs (32) is consistent with the width of the second plug (61), and the distance between adjacent second plugs (61) is consistent with the width of the first plug (32).

4. The hydraulic cylinder piston rod according to claim 3, characterized in that: The outer surface of the second rod shaft (4) is fixedly connected to a limiting ring (41), and a mounting sleeve (42) is sleeved on the outer surface of the second rod shaft (4) at a position above the limiting ring (41).

5. The hydraulic cylinder piston rod according to claim 4, characterized in that: A threaded sleeve (31) is fixedly connected to the top of the connecting sleeve (3), and the outer surface of the threaded sleeve (31) and the inner surface wall of the mounting sleeve (42) are threadedly connected.

6. The hydraulic cylinder piston rod according to claim 5, characterized in that: A movable groove (11) is provided at the center of the top of the first rod body (1), a movable rod (13) is slidably arranged inside the movable groove (11), and a circular sleeve (51) is fixedly connected to the bottom of the plane bearing (5).

7. The hydraulic cylinder piston rod according to claim 6, characterized in that: The inner surface wall of the movable groove (11) is symmetrically provided with a limiting groove (12); the outer surface of the movable rod (13) is symmetrically fixedly connected with a limiting strip (14); the top end of the movable rod (13) is inserted into the inside of the circular sleeve (51); and the limiting strip (14) corresponds to the limiting groove (12).

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