Buffering structure of hydraulic oil cylinder

Abstract

The utility model discloses a hydraulic oil cylinder buffering structure which comprises a cylinder barrel, a piston rod is connected in the cylinder barrel in a sliding mode, one end of the piston rod penetrates through the cylinder barrel, the end, located in the cylinder barrel, of the piston rod is fixedly connected with a piston head, a sliding groove is formed in the piston head, and two sliding plates are connected in the sliding groove in a sliding mode. A shock absorber is fixedly connected between the two sliding plates, a plurality of receding grooves are formed in the piston head, connecting plates are slidably connected into the receding grooves, and connecting rods are fixedly connected to one sides of the connecting plates. The hydraulic oil cylinder not only can prevent the piston head from violently impacting the oil cylinder and preventing the oil cylinder from violently vibrating, so that the use safety of the hydraulic oil cylinder is improved, but also can prevent the piston head from moving to block the first oil hole or the second oil hole, and the use effect of the hydraulic oil cylinder is improved. And the hydraulic oil can be prevented from leaking from a gap between the cylinder barrel and the piston rod, and the sealing effect of the hydraulic oil cylinder in use is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of oil cylinders, in particular to a hydraulic oil cylinder buffer structure. Background Art

[0002] A hydraulic cylinder is a hydraulic actuator that converts hydraulic energy into mechanical energy and performs linear reciprocating motion. When the hydraulic cylinder is in use, the piston rod performs reciprocating motion of extension and retraction.

[0003] If the piston rod is subjected to a large external force when retracting, the piston rod will return faster and the return kinetic energy will be greater, causing the kinetic energy on the piston rod to violently hit the bottom of the cylinder, causing the cylinder to vibrate violently. The vibration will be transmitted and affect the working device. Frequent impacts may cause damage to the bottom of the plunger cylinder and the piston rod. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes a hydraulic oil cylinder buffer structure.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A hydraulic cylinder buffer structure comprises a cylinder barrel, in which a piston rod is slidably connected, one end of the piston rod passes through the cylinder barrel, one end of the piston rod located in the cylinder barrel is fixedly connected to a piston head, a slide groove is provided in the piston head, two slide plates are slidably connected in the slide groove, a shock absorber is fixedly connected between the two slide plates, a plurality of avoidance grooves are provided in the piston head, a plurality of avoidance grooves are slidably connected to a connecting plate, one side of the connecting plate is fixedly connected to a connecting rod, one end of the connecting rod passes through the piston head and is fixedly connected to a buffer plate, two pull ropes are fixedly connected to opposite sides of the two slide plates, and one end of the pull rope passes through the other slide plate, extends into the avoidance groove and is fixed to the connecting plate, a plurality of avoidance grooves are fixedly connected to one side with a guide frame, and the pull ropes pass around the guide frame.

[0007] As a further solution of the utility model, a plurality of the avoidance grooves are evenly and symmetrically distributed on both sides of the slide groove.

[0008] As a further solution of the utility model, a second sealing ring is fixedly connected to the outer side of the piston head, and the second sealing ring is equal in length to the piston head.

[0009] As a further solution of the utility model, a first sealing ring is fixedly connected to the cylinder at a position where the piston rod passes through.

[0010] As a further solution of the utility model, a first oil hole and a second oil hole are respectively opened at the top of the cylinder near the two ends.

[0011] As a further solution of the utility model, two limiting rings are fixedly connected in the cylinder, the two limiting rings are symmetrically distributed, and the piston rod passes through one of the limiting rings.

[0012] As a further solution of the utility model, the two limiting rings are respectively located between the first oil hole and the second oil hole.

[0013] As a further solution of the utility model, one end of the piston rod passing through the cylinder is fixedly connected to a mounting plate.

[0014] The beneficial effects of the utility model are:

[0015] 1. Through the setting of the shock absorber, when the piston rod drives the piston head to move, the two buffer plates on the same side will be squeezed. At this time, the buffer plate will push the connecting plate to move through the connecting rod, and the connecting plate will pull the two slides to move through the pull rope. The two slides will squeeze the shock absorber, thereby buffering the piston head, preventing the piston head from violently hitting the cylinder and preventing the cylinder from vibrating violently, thereby improving the safety of the use of the hydraulic cylinder.

[0016] 2. By setting two limit rings, the two limit rings will limit the distance the piston head moves, thereby preventing the piston head from moving and blocking the first oil hole or the second oil hole, thereby improving the use effect of the hydraulic cylinder.

[0017] 3. By setting the first sealing ring, the first sealing ring can seal the gap between the piston rod and the cylinder barrel, thereby preventing the hydraulic oil from leaking from the gap between the cylinder barrel and the piston rod, thereby improving the sealing effect of the hydraulic cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a three-dimensional structural schematic diagram of a hydraulic cylinder buffer structure proposed by the utility model;

[0019] Figure 2 A schematic diagram of a cylinder section structure of a hydraulic oil cylinder buffer structure proposed by the utility model;

[0020] Figure 3 The utility model provides a schematic diagram of the cross-sectional structure of the piston head of a hydraulic cylinder buffer structure.

[0021] In the figure: 1. first oil hole; 2. cylinder; 3. first sealing ring; 4. piston rod; 5. mounting plate; 6. second oil hole; 7. limiting ring; 8. second sealing ring; 9. piston head; 10. slide groove; 11. pull rope; 12. buffer plate; 13. connecting rod; 14. guide frame; 15. connecting plate; 16. avoidance groove; 17. slide plate; 18. shock absorber. DETAILED DESCRIPTION

[0022] It should be noted that the terms "first", "second", etc. in the specification and claims of this application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence, so that the embodiments of the application described here, based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative work should fall within the scope of protection of this application.

[0023] Reference Figure 1-Figure 3 A hydraulic cylinder buffer structure includes a cylinder 2, a piston rod 4 is slidably connected in the cylinder 2, one end of the piston rod 4 passes through the cylinder 2, a piston head 9 is welded to one end of the piston rod 4 located in the cylinder 2, a slide groove 10 is provided in the piston head 9, two slide plates 17 are slidably connected in the slide groove 10, a shock absorber 18 is fixed between the two slide plates 17 by bolts, a plurality of avoidance grooves 16 are provided in the piston head 9, a plurality of avoidance grooves 16 are slidably connected to a connecting plate 15, a connecting rod 13 is welded on one side of the connecting plate 15, one end of the connecting rod 13 passes through the piston head 9 and is welded to a buffer plate 12, two pull ropes 11 are bonded to the opposite sides of the two slide plates 17, and one end of the pull rope 11 passes through another slide plate 17 and extends into the avoidance groove 16 to be fixed to the connecting plate 15, and one side of the plurality of avoidance grooves 16 A guide frame 14 is welded thereon, and the pull rope 11 bypasses the guide frame 14. When the piston rod 4 is extended and retracted, the piston head 9 will move with the piston rod 4. During the movement, the two buffer plates 12 on the same side will be squeezed. The buffer plate 12 will push the connecting plate 15 to move along the avoidance groove 16 through the connecting rod 13. During the movement, the connecting plate 15 will pull the pull rope 11, so that the pull rope 11 pulls the slide plate 17 to move along the slide groove 10 under the action of the guide frame 14, so that the two slide plates 17 move toward each other, and the two slide plates 17 squeeze the shock absorber 18, so that the piston head 9 is buffered by the shock absorber 18, avoiding the piston head 9 from violently hitting the oil cylinder, preventing the oil cylinder from vibrating violently, thereby improving the safety of the use of the hydraulic cylinder.

[0024] In the utility model, a plurality of avoidance grooves 16 are evenly and symmetrically distributed on both sides of the slide groove 10, a second sealing ring 8 is bonded to the outer side of the piston head 9, and the second sealing ring 8 is of the same length as the piston head 9, the second sealing ring 8 can increase the sealing between the piston head 9 and the cylinder 2, a first sealing ring 3 is bonded to the position where the piston rod 4 passes through the cylinder 2, the first sealing ring 3 can seal the gap between the piston rod 4 and the cylinder 2, thereby avoiding leakage of hydraulic oil, a first oil hole 1 and a second oil hole 6 are respectively opened at the top of the cylinder 2 near the two ends, two limiting rings 7 are welded in the cylinder 2, the two limiting rings 7 are symmetrically distributed, and the piston rod 4 passes through one of the limiting rings 7, the two limiting rings 7 are respectively located between the first oil hole 1 and the second oil hole 6, the limiting ring 7 can limit the moving distance of the piston head 9, thereby avoiding the piston head 9 blocking the first oil hole 1 or the second oil hole 6, and a mounting plate 5 is welded to one end of the piston rod 4 passing through the cylinder 2.

[0025] Working principle: When the hydraulic cylinder is working, the piston rod 4 will extend and retract, and the piston head 9 will move with the piston rod 4. During the movement, the two buffer plates 12 on the same side will be squeezed, and the buffer plate 12 will push the connecting plate 15 to move along the avoidance groove 16 through the connecting rod 13. During the movement, the connecting plate 15 will pull the pull rope 11, so that the pull rope 11 pulls the slide plate 17 to move along the slide groove 10 under the action of the guide frame 14, so that the two slide plates 17 move toward each other, and the two slide plates 17 squeeze the shock absorber 18, so that the piston head 9 is buffered by the shock absorber 18, avoiding the piston head 9 from violently hitting the cylinder and preventing the cylinder from vibrating violently, thereby improving the safety of the use of the hydraulic cylinder.

[0026] The present invention has been described through the above-mentioned embodiments. Those skilled in the art will appreciate that the present invention is not limited to the above-mentioned embodiments, and more modifications may be made according to the teachings of the present invention. These modifications are all within the scope of protection claimed by the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A hydraulic cylinder buffer structure, comprising a cylinder barrel (2), characterized in that: A piston rod (4) is slidably connected in the cylinder barrel (2), one end of the piston rod (4) passes through the cylinder barrel (2), one end of the piston rod (4) located in the cylinder barrel (2) is fixedly connected to a piston head (9), a slide groove (10) is provided in the piston head (9), two slide plates (17) are slidably connected in the slide groove (10), a shock absorber (18) is fixedly connected between the two slide plates (17), a plurality of avoidance grooves (16) are provided in the piston head (9), and a connecting plate (18) is slidably connected in each of the plurality of avoidance grooves (16). 5), one side of the connecting plate (15) is fixedly connected to a connecting rod (13), one end of the connecting rod (13) passes through the piston head (9) and is fixedly connected to a buffer plate (12), two opposite sides of the two slide plates (17) are fixedly connected to two pull ropes (11), and one end of the pull rope (11) passes through another slide plate (17) and extends into the avoidance groove (16) to be fixed to the connecting plate (15), one side of the plurality of avoidance grooves (16) is fixedly connected to a guide frame (14), and the pull rope (11) passes around the guide frame (14).

2. A hydraulic cylinder buffer structure according to claim 1, characterized in that: The plurality of avoidance grooves (16) are evenly and symmetrically distributed on both sides of the slide groove (10).

3. The hydraulic cylinder buffer structure according to claim 1, characterized in that: A second sealing ring (8) is fixedly connected to the outer side of the piston head (9), and the second sealing ring (8) is of the same length as the piston head (9).

4. The hydraulic cylinder buffer structure according to claim 1, characterized in that: A first sealing ring (3) is fixedly connected to the cylinder (2) at a position where the piston rod (4) passes through.

5. The hydraulic cylinder buffer structure according to claim 1, characterized in that: A first oil hole (1) and a second oil hole (6) are respectively provided at the top of the cylinder (2) near both ends.

6. A hydraulic cylinder buffer structure according to claim 5, characterized in that: Two limiting rings (7) are fixedly connected inside the cylinder barrel (2), the two limiting rings (7) are symmetrically distributed, and the piston rod (4) passes through one of the limiting rings (7).

7. A hydraulic cylinder buffer structure according to claim 6, characterized in that: The two limiting rings (7) are respectively located between the first oil hole (1) and the second oil hole (6).

8. The hydraulic cylinder buffer structure according to claim 1, characterized in that: One end of the piston rod (4) passing through the cylinder barrel (2) is fixedly connected to a mounting plate (5).

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