High-performance hydraulic oil cylinder with multi-stage buffer structure

Abstract

The utility model discloses a multi-stage buffer structure high-performance hydraulic oil cylinder which comprises a cylinder body, one end of the cylinder body is connected with a telescopic rod in a sliding mode, the side wall of the telescopic rod is sleeved with a sleeve, one end of the sleeve is fixedly connected with a supporting frame, and one side of the supporting frame is connected with a plurality of buffer rods arranged in the circumferential direction in a penetrating and sliding mode. One ends of the multiple buffer rods are fixedly connected with a contact frame, the side wall of the telescopic rod is provided with an installation mechanism used for installing a sleeve, the side wall of the buffer rod is provided with a supporting mechanism used for buffering and supporting the contact frame, the side wall of the telescopic rod is provided with a liquid inlet groove, and a push plate is fixedly connected into the liquid inlet groove. Through positioning connection of the mounting hole and the positioning rod, positioning mounting of the sleeve, the connecting frame and the supporting frame can be achieved, elastic supporting and buffering can be conducted on the contact frame, buffering contact can be conducted on the end contact portion of the telescopic rod, and the problem that the internal structure of the hydraulic oil cylinder is damaged due to direct contact is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to hydraulic cylinder technical field especially relates to a multistage buffer structure high performance hydraulic cylinder. BACKGROUND

[0002] Hydraulic cylinder is the execution element in hydraulic system, it will hydraulic energy into mechanical energy, realizes linear reciprocating motion or swing.

[0003] In numerous use hydraulic cylinder's equipment, single stage buffer structure's hydraulic cylinder is in high speed motion part brake, and the buffer effect is limited, when the piston rod of hydraulic cylinder is fast and retracts and approaches the end of stroke, because the speed is fast, single stage buffer is difficult to reduce the movement speed of piston rapidly, leads to bigger impact force, this not only can cause damage to the sealing element, piston etc. UTILITY MODEL CONTENTS

[0004] The utility model discloses a multistage buffer structure high performance hydraulic cylinder to solve the technical problems in the prior art.

[0005] In order to realize the above-mentioned purpose, the utility model adopts the following technical scheme:

[0006] A multistage buffer structure high performance hydraulic cylinder, including the cylinder body, the one end of cylinder body is connected with telescopic link of sliding, the lateral wall of telescopic link is equipped with the sleeve pipe, one end of sleeve pipe is fixedly connected with the support frame, the one side of support frame is connected with the multiple circumferential arrangement's buffer rod of sliding, one end of multiple buffer rod is fixedly connected with the contact frame, the lateral wall of telescopic link is equipped with the installation mechanism for installing sleeve pipe, the lateral wall of buffer rod is equipped with the support mechanism for the buffer support of contact frame, the lateral wall of telescopic link is set up and is equipped with the liquid inlet groove, the push plate is fixedly connected in liquid inlet groove, the both sides of push plate are equipped with the sealing mechanism for the auxiliary push plate sealing.

[0007] Preferably, the installation mechanism includes two symmetrically arranged mounting holes in the side wall of the telescopic rod, a positioning rod is arranged through the mounting holes, the side wall of the positioning rod is provided with a connecting frame, and the connecting frame is attached to the side wall of the sleeve pipe.

[0008] Preferably, the support mechanism includes a compression spring arranged around the side wall of the buffer rod, a positioning nut is threadedly connected to the side wall of the buffer rod, and the two ends of the compression spring are fixedly connected to the opposite surfaces of the positioning nut and the support frame.

[0009] Preferably, the side wall of the cylinder is provided with two symmetrical hydraulic pipes, and the two hydraulic pipes are distributed on both sides of the push plate.

[0010] Preferably, the sealing mechanism comprises a plurality of circumferentially arranged guide rods fixedly connected on both sides of the push plate, and the side wall of the guide rod is slidably connected with a movable plate, the movable plate is slidably connected in the liquid inlet groove, and the movable plate is fixedly connected with a sealing ring on the side close to the push plate.

[0011] Preferably, the movable plate is elastically connected with a connecting spring at one end of the guide rod, and the connecting spring is sleeved on the side wall of the guide rod.

[0012] Compared with the prior art, the utility model has the advantages that:

[0013] 1、The utility model discloses a contact frame, compression spring, locating nut, buffer rod and support frame and other structures are set up, and through the positioning connection of the mounting hole and the positioning rod, the positioning installation of the sleeve, the connecting frame and the support frame can be realized, the elastic support and the buffering of the contact frame can be carried out, the end contact part of the telescopic rod can be buffered and contacted, and the problem that the internal structure of the hydraulic oil cylinder is damaged due to direct contact is avoided.

[0014] 2、The utility model discloses a movable plate, guide rod, connecting spring and sealing ring and other structures are set up, and through the guidance of the guide rod and the sliding buffering of the movable plate, buffering and protection can be provided for the push plate in the extrusion process of being pushed by the hydraulic oil, and the two sides of the push plate can be sealed and contacted and protected simultaneously through the extrusion of the movable plate to the sealing ring, the sealing property of the push plate is guaranteed, and the problem that impact abrasion occurs is avoided. ACCURACY OF DRAWINGS

[0015] Figure 1 It is a front view structural schematic diagram of a multi-stage buffering structure high-performance hydraulic oil cylinder provided by the utility model;

[0016] Figure 2 It is a contact frame structure schematic diagram of a multi-stage buffering structure high-performance hydraulic oil cylinder provided by the utility model;

[0017] Figure 3 It is a push plate structure schematic diagram of a multi-stage buffering structure high-performance hydraulic oil cylinder provided by the utility model;

[0018] Figure 4 It is a movable plate structure schematic diagram of a multi-stage buffering structure high-performance hydraulic oil cylinder provided by the utility model.

[0019] In the figure: 1 cylinder body, 2 telescopic rod, 3 hydraulic pipe, 4 mounting hole, 5 positioning rod, 6 sleeve, 7 connecting frame, 8 support frame, 9 buffer rod, 10 positioning nut, 11 compression spring, 12 contact frame, 13 liquid inlet groove, 14 push plate, 15 movable plate, 16 guide rod, 17 connecting spring, 18 sealing ring. DETAILED DESCRIPTION

[0020] In order to make the above-mentioned purpose, features and advantages of the utility model more apparent and easy to understand, the specific embodiments of the utility model are described in detail below with reference to the drawings. In the following description, a lot of specific details are set forth in order to give a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the utility model, so the utility model is not limited by the following disclosed specific implementation.

[0021] REFERENCE Figures 1-4 A kind of multi-stage buffering structure high-performance hydraulic cylinder, including cylinder body 1, the side wall of cylinder body 1 is equipped with two symmetrical hydraulic pipes 3, two hydraulic pipes 3 are distributed in the two sides of push plate 14, one end of cylinder body 1 is slidably connected with telescopic rod 2, the side wall of telescopic rod 2 is equipped with sleeve 6, one end of sleeve 6 is fixedly connected with support frame 8, the side of support frame 8 is slidably connected with multiple circumferentially arranged buffer rods 9, one end of multiple buffer rods 9 is fixedly connected with contact frame 12, the side wall of telescopic rod 2 is equipped with mounting mechanism for mounting sleeve 6, mounting mechanism includes two symmetrical mounting holes 4 opened in the side wall of telescopic rod 2, positioning rod 5 is arranged in mounting hole 4, the side wall of positioning rod 5 is equipped with connecting frame 7, connecting frame 7 is attached to the side wall of sleeve 6;

[0022] The side wall of buffer rod 9 is equipped with support mechanism for buffering and supporting contact frame 12, support mechanism includes compression spring 11 sleeved on the side wall of buffer rod 9, positioning nut 10 is threadedly connected to the side wall of buffer rod 9, the opposite faces of compression spring 11 and support frame 8 are fixedly connected with the two ends of positioning nut 10 respectively;

[0023] The side wall of telescopic rod 2 is provided with liquid inlet groove 13, push plate 14 is fixedly connected in liquid inlet groove 13, the two sides of push plate 14 are equipped with sealing mechanism for assisting push plate 14 to seal, sealing mechanism includes multiple circumferentially arranged guide rods 16 fixedly connected to the two sides of push plate 14, multiple guide rods 16 are slidably connected with movable plate 15 on the side wall, movable plate 15 is slidably connected in liquid inlet groove 13, the side of movable plate 15 close to push plate 14 is fixedly connected with sealing ring 18, connecting spring 17 is elastically connected between the one end of movable plate 15 and guide rod 16, connecting spring 17 is sleeved on the side wall of guide rod 16.

[0024] When the utility model is used, such as Figures 1-3As shown, in use, first, the positioning rod 5 is inserted into the mounting hole 4 on the telescopic rod 2, then the connecting frame 7 is mounted on the side wall of the sleeve 6, which provides mounting and positioning for the sleeve 6, at this time, the support frame 8 and the buffer rod 9 are mounted on the contact frame 12, the positioning nut 10 on the buffer rod 9 can be used to adjust the required buffer force of the contact frame 12, in use, when the telescopic rod 2 contacts the telescopic support, first, the contact frame 12 is pushed to contact the telescopic support, under the support of the buffer rod 9 and the compression spring 11, the contact frame 12 is in elastic contact with the contact surface of the support, as the telescopic rod 2 continues to extend and retract, at this time, one end of the telescopic rod 2 is flush with the contact frame 12, at this time, the telescopic rod 2 provides telescopic support, the contact frame 12 provides contact buffering for the telescopic rod 2 while increasing the contact area of the telescopic rod 2, in the process of extension and retraction of the telescopic rod 2, the hydraulic oil is transported through the hydraulic pipe 3, at this time, the hydraulic oil pushes the push plate 14 to slide in the cylinder body 1, first, the push plate 14 contacts the movable plate 15, under the guidance of the guide rod 16 and the buffering of the connecting spring 17, the movement of the movable plate 15 is guided and buffered, as the hydraulic oil is transported, the movable plate 15 is pressed to drive the sealing ring 18 on the movable plate 15 to contact the push plate 14, the sealing ring 18 is pressed to provide extrusion deformation sealing between the push plate 14 and the cylinder body 1, which ensures the sealing between the push plate 14 and the cylinder body 1, at the same time, the direct contact of the hydraulic oil with the movable plate 15 can avoid the contact impact on the push plate 14, which reduces the damage rate of the push plate 14.

[0025] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited thereto, any person skilled in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A multi-stage cushioning structure high-performance hydraulic cylinder comprising a cylinder body (1), characterized in that, One end of the cylinder (1) is slidingly connected with a telescopic rod (2), the side wall of the telescopic rod (2) is sleeved with a sleeve (6), one end of the sleeve (6) is fixedly connected with a support frame (8), one side of the support frame (8) is slidingly connected with a plurality of circumferentially arranged buffer rods (9), one end of the plurality of buffer rods (9) is fixedly connected with a contact frame (12), the side wall of the telescopic rod (2) is provided with a mounting mechanism for mounting the sleeve (6), the side wall of the buffer rod (9) is provided with a support mechanism for buffering and supporting the contact frame (12), the side wall of the telescopic rod (2) is provided with a liquid inlet groove (13), the liquid inlet groove (13) is fixedly connected with a push plate (14), both sides of the push plate (14) are provided with a sealing mechanism for assisting the sealing of the push plate (14).

2. The multi-stage cushioning structure high-performance hydraulic cylinder according to claim 1, characterized in that, The mounting mechanism comprises two symmetrically arranged mounting holes (4) formed in the side wall of the telescopic rod (2), the mounting holes (4) are throughly provided with a positioning rod (5), the side wall of the positioning rod (5) is provided with a connecting frame (7), and the connecting frame (7) is attached to the side wall of the sleeve (6).

3. The multi-stage cushioning structure high-performance hydraulic cylinder according to claim 2, characterized in that, The support mechanism comprises a compression spring (11) sleeved on the side wall of the buffer rod (9), the side wall of the buffer rod (9) is threadedly connected with a positioning nut (10), and both ends of the compression spring (11) are fixedly connected to the opposite surfaces of the positioning nut (10) and the support frame (8).

4. The multi-stage cushioning structure high-performance hydraulic cylinder according to claim 3, characterized in that, The side wall of the cylinder (1) is provided with two symmetrically arranged hydraulic pipes (3), and the two hydraulic pipes (3) are distributed on both sides of the push plate (14).

5. The multi-stage cushioning structure high-performance hydraulic cylinder according to claim 4, characterized in that, The sealing mechanism comprises a plurality of circumferentially arranged guide rods (16) fixedly connected on both sides of the push plate (14), the side wall of the plurality of guide rods (16) is slidingly connected with a movable plate (15), the movable plate (15) is slidingly connected in the liquid inlet groove (13), and one side of the movable plate (15) close to the push plate (14) is fixedly connected with a sealing ring (18).

6. A high performance hydraulic cylinder with multi-stage cushioning structure according to claim 5, characterized in that, The movable plate (15) and the guide rod (16) are elastically connected with a connecting spring (17) at one end, and the connecting spring (17) is sleeved on the side wall of the guide rod (16).

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