Anti-impact balanced hydraulic oil cylinder

Abstract

The utility model discloses an anti-impact balanced type hydraulic oil cylinder which comprises a cylinder body, a base is arranged at the bottom of the cylinder body, a cylinder seat is arranged on the outer side of the cylinder body and fixedly connected with the base, a piston rod is arranged on the cylinder body, a plurality of cavities are formed in the cylinder seat, a plurality of guide holes are formed in the top of the cylinder seat, and the guide holes are communicated with the piston rod. A plurality of guide mechanisms are arranged on the piston rod, a plurality of auxiliary mechanisms are arranged in the cavities, and each guide mechanism comprises a plurality of auxiliary blocks fixedly installed on the piston rod. Through the arrangement of the guide mechanism and the auxiliary mechanism, the piston rod can be guided in an auxiliary mode in the extending or retracting process of the piston rod, the cylinder body can be limited in an auxiliary mode in the retracting process of the piston rod, and therefore the trend that the cylinder body moves towards the base in the barrel base can be slowed down to a certain degree; impact energy of piston rod return stroke can be effectively absorbed, and the stability of the cylinder body is improved.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic cylinder technology, and in particular to an anti-impact balanced hydraulic cylinder. Background Technology

[0002] Hydraulic cylinders have a simple structure and reliable operation. Driven by hydraulic medium, they have a very fast response speed and can complete actions in a very short time. Moreover, the movement is smooth and does not easily generate vibration and noise, making them widely used in some applications where smooth movement is required.

[0003] Traditional hydraulic cylinder guiding devices mostly adopt a fixed guide sleeve structure, which can only achieve basic guiding function by relying on the fit clearance between the piston rod and the cylinder barrel, resulting in low guiding accuracy. Especially under the condition of rapid piston rod retraction, the cylinder body is prone to axial movement due to inertia, thereby reducing the service life of the equipment. To address this, we propose an anti-impact balanced hydraulic cylinder. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing an anti-impact balanced hydraulic cylinder.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An anti-impact balanced hydraulic cylinder includes a cylinder body, a base at the bottom of the cylinder body, a cylinder seat on the outer side of the cylinder body, the cylinder seat being fixedly connected to the base, a piston rod on the cylinder body, multiple cavities inside the cylinder seat, multiple guide holes at the top of the cylinder seat, multiple guide mechanisms on the piston rod, and multiple auxiliary mechanisms in each of the multiple cavities.

[0007] Preferably, the guiding mechanism includes multiple auxiliary blocks fixedly mounted on the piston rod, and a guide rod is fixedly mounted on the bottom of each of the multiple auxiliary blocks. The multiple guide rods pass through multiple guide holes and are slidably connected to the multiple guide holes respectively.

[0008] Preferably, the auxiliary mechanism includes a connecting rod that passes through and is slidably connected to the inner wall of the cavity near the cylinder body. A mounting block is fixedly installed at one end of the connecting rod inside the cavity. A spring is fixedly connected between the mounting block and the inner wall of the cavity near the cylinder body. A stop block is fixedly installed at one end of the connecting rod inside the cylinder seat.

[0009] Preferably, the plurality of guide holes are respectively connected to the plurality of cavities, and a buffer is provided between the cylinder and the base.

[0010] Preferably, the vertical cross-section of the mounting block is a right-angled triangle, and the vertical cross-section of the guide rod is a right-angled trapezoid.

[0011] Preferably, a rubber sheet is provided on the side wall of the abutment block near the cylinder body, and the connecting rod is a rectangular rod.

[0012] The beneficial effects of this utility model are:

[0013] By setting up guiding and auxiliary mechanisms, the piston rod can be guided during its extension or retraction, and the cylinder can be limited during its retraction. This can reduce the tendency of the cylinder to move towards the base in the cylinder seat, effectively absorb the impact energy of the piston rod's return stroke, and improve the stability of the cylinder. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of an anti-impact balanced hydraulic cylinder proposed in this utility model;

[0015] Figure 2 This is a schematic diagram of the planar structure of an anti-impact balanced hydraulic cylinder proposed in this utility model;

[0016] Figure 3 Appendix to this utility model Figure 2 A magnified structural diagram of point A in the middle.

[0017] In the diagram: 1. Base, 2. Cylinder seat, 3. Guide rod, 4. Cylinder body, 5. Piston rod, 6. Auxiliary block, 7. Buffer, 8. Cavity, 9. Rubber sheet, 10. Abutment block, 11. Mounting block, 12. Spring, 13. Connecting rod, 14. Guide hole. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0019] Reference Figures 1-3An anti-impact balanced hydraulic cylinder includes a cylinder body 4, a base 1 at the bottom of the cylinder body 4, a cylinder seat 2 on the outer side of the cylinder body 4, the cylinder seat 2 being fixedly connected to the base 1, a piston rod 5 on the cylinder body 4, multiple cavities 8 inside the cylinder seat 2, multiple guide holes 14 at the top of the cylinder seat 2, and multiple guide mechanisms on the piston rod 5. Each guide mechanism includes multiple auxiliary blocks 6 fixedly mounted on the piston rod 5, and guide rods 3 fixedly mounted at the bottom of each auxiliary block 6, with the guide rods 3 passing through the multiple guide holes. The guide rod 3 and guide holes 14 are slidably connected to the piston rod 5. The guide rod 3 and guide holes 14 can provide auxiliary guidance for the piston rod 5, thereby improving the stability of the piston rod 5 during the extension or retraction process. The multiple guide holes 14 are connected to multiple cavities 8. A buffer 7 is provided between the cylinder body 4 and the base 1. The buffer 7 is made of high elastic rubber, such as silicone rubber or fluororubber, to achieve hard buffering of the cylinder body 4 by the buffer 7, further ensuring that the cylinder body 4 can have a certain buffering performance while also ensuring good displacement accuracy.

[0020] Multiple auxiliary mechanisms are provided in multiple cavities 8. The auxiliary mechanisms include a connecting rod 13 that passes through and slides on the inner wall of the cavity 8 near the cylinder 4. A mounting block 11 is fixedly installed at one end of the connecting rod 13 in the cavity 8. A spring 12 is fixedly connected between the mounting block 11 and the inner wall of the cavity 8 near the cylinder 4. A stop block 10 is fixedly installed at one end of the connecting rod 13 in the cylinder seat 2. The vertical cross-section of the mounting block 11 is a right-angled triangle. The vertical cross-section of the guide rod 3 is a right-angled trapezoid. A rubber sheet 9 is provided on the side wall of the stop block 10 near the cylinder 4. The connecting rod 13 is a rectangular rod. The rectangular cross-section design prevents the connecting rod 13 from rotating and maintains the stability of the movement direction.

[0021] When this utility model is in use, when the piston rod 5 returns in the cylinder 4, the auxiliary block 6, guide rod 3, and guide hole 14 can guide the piston rod 5, ensuring stability during the extension and retraction process. The return of the piston rod 5 will drive the guide rod 3 to move downward. The inclined surface on the guide rod 3 and the inclined surfaces of multiple mounting blocks 11 in the cavity 8 cooperate with each other in sequence, so that the mounting blocks 11, connecting rod 13, abutment block 10, and rubber sheet 9 can move towards the cylinder 4. The spring 12 is compressed, which can clamp and limit the cylinder 4, thereby reducing the tendency of the cylinder 4 to move towards the base 1 in the cylinder seat 2 to a certain extent. It can not only effectively absorb the impact energy of the piston rod 5 returning, but also improve the stability of the cylinder 4.

[0022] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An anti-impact balanced hydraulic cylinder, comprising a cylinder body (4), characterized in that, The cylinder body (4) has a base (1) at its bottom and a cylinder seat (2) on its outer side. The cylinder seat (2) is fixedly connected to the base (1). The cylinder body (4) has a piston rod (5). The cylinder seat (2) has multiple cavities (8) inside. The cylinder seat (2) has multiple guide holes (14) at its top. The piston rod (5) has multiple guide mechanisms. The guide mechanism includes multiple auxiliary blocks (6) fixedly installed on the piston rod (5). The bottom of each of the multiple auxiliary blocks (6) is fixedly installed with a guide rod (3). The multiple guide rods (3) pass through the multiple guide holes (14) and are slidably connected to the multiple guide holes (14). The multiple cavities (8) have multiple auxiliary mechanisms inside.

2. The anti-impact balanced hydraulic cylinder according to claim 1, characterized in that, The auxiliary mechanism includes a connecting rod (13) that passes through and is slidably connected to the inner wall of the cavity (8) near the cylinder (4). An mounting block (11) is fixedly installed at one end of the connecting rod (13) in the cavity (8). A spring (12) is fixedly connected between the mounting block (11) and the inner wall of the cavity (8) near the cylinder (4). A stop block (10) is fixedly installed at one end of the connecting rod (13) in the cylinder seat (2).

3. The anti-impact balanced hydraulic cylinder according to claim 1, characterized in that, The multiple guide holes (14) are respectively connected to multiple cavities (8), and a buffer (7) is provided between the cylinder (4) and the base (1).

4. The anti-impact balanced hydraulic cylinder according to claim 2, characterized in that, The vertical cross-section of the mounting block (11) is a right-angled triangle, and the vertical cross-section of the guide rod (3) is a right-angled trapezoid.

5. The anti-impact balanced hydraulic cylinder according to claim 2, characterized in that, The abutment (10) has a rubber sheet (9) on one side wall near the cylinder (4), and the connecting rod (13) is a rectangular rod.

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