Damping type hydraulic oil cylinder

Abstract

The utility model relates to the technical field of hydraulic oil cylinders, in particular to a damping type hydraulic oil cylinder which is characterized in that four supporting rods and a base are arranged on the surface of a fixing seat, buffer springs are arranged at the bottoms of the supporting rods, four fixing grooves and telescopic shafts are arranged on the surface of the base, first springs are arranged in the fixing grooves, the telescopic shafts are fixedly connected with a cylinder body, and a fixing block is arranged at the bottom of the cylinder body; third springs are arranged on the surfaces of the fixing blocks, the other fixing block is connected with a piston, and an abutting block, a second spring and a piston rod are arranged on the surface of the piston; the device has the beneficial effects that a buffer spring can be compressed downwards to bear and absorb a part of vibration when external vibration is received, a movable shaft on the surface of a base extrudes a first spring when receiving the vibration transmitted by a cylinder body, and a second spring on the lower surface of a piston is compressed between fixing blocks to further reduce the vibration; an abutting block on the upper surface of the piston and a third spring ensure that the piston rod does not swing excessively, and the effects of multiple damping and device protection are achieved for the whole oil cylinder.

Description

Technical Field

[0001] The utility model relates to the field of hydraulic oil cylinders, in particular to a shock-absorbing hydraulic oil cylinder. Background Art

[0002] A hydraulic cylinder is a hydraulic actuator that converts hydraulic energy into mechanical energy and performs linear reciprocating motion (or swinging motion). A hydraulic oil cylinder is a type of hydraulic cylinder. When it is used to achieve reciprocating motion, a deceleration device can be eliminated, and there is no transmission gap, and the motion is smooth. Therefore, it is widely used in the hydraulic systems of various machines. A hydraulic cylinder is basically composed of a cylinder barrel and a cylinder head, a piston and a piston rod, a sealing device, a buffer device, and an exhaust device.

[0003] As an indispensable machine in the mechanical field, hydraulic cylinders are widely used in various fields. However, various hydraulic cylinders on the market have internal components that are quickly damaged due to lack of shock-absorbing devices or simple structures.

[0004] Therefore, the utility model proposes a shock-absorbing hydraulic cylinder to solve the above-mentioned technical problems. Utility Model Content

[0005] The purpose of the utility model is to provide a shock-absorbing hydraulic cylinder to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a shock-absorbing hydraulic cylinder, which includes: a fixed seat, a base and a support rod are provided on the surface of the fixed seat, a fixed groove and a telescopic shaft are provided on the surface of the base, the telescopic shaft is connected to the bottom surface of the cylinder body, a fixed block and a third spring are provided on the bottom surface of the cylinder body, a piston is provided inside the cylinder body, and a first oil inlet pipe, a second oil inlet pipe and an oil outlet pipe are provided on the side surface of the cylinder body.

[0007] Preferably, the support rods are fixedly connected to the four corners of the fixing seat, and a buffer spring is provided at the bottom of each support rod.

[0008] Preferably, a first spring is provided inside the fixing groove, a lower surface of the first spring is fixedly connected to the fixing groove, and an upper surface of the first spring is fixedly connected to the telescopic shaft.

[0009] Preferably, the fixing blocks are distributed on the surface of the bottom of the cylinder body and the lower surface of the piston, and the fixing blocks are fixedly connected to the third spring.

[0010] Preferably, the piston surface is provided with a stop block and an oil accumulation groove, the piston surface is connected to the piston rod, a sealing plate is provided on the piston side, a second spring is provided on the side of the stop block, the second spring is fixedly connected to the movable block, a movable arm is provided on the surface of the movable block, movable bolts are provided at both ends of the movable arm, and a movable shaft is provided on the surface of the movable arm.

[0011] Preferably, the first oil inlet pipe is arranged inside the cylinder body and connected to the long oil delivery channel, and the second oil inlet pipe is fixedly connected to the short oil delivery channel.

[0012] Preferably, an oil outlet valve is provided on the surface of the oil outlet pipe, the oil outlet pipe is fixedly connected to the oil outlet channel, a hose is provided on the other side of the oil outlet channel, and the hose is connected to the lower surface of the piston.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The shock-absorbing hydraulic cylinder proposed in the utility model has a first wave of vibration weakening by the fixed seat outside the cylinder body and the buffer spring on the surface of the support rod when it is vibrated, and the first spring inside the fixed groove on the surface of the base will squeeze downward to buffer the pressure from the cylinder body, and a third spring is provided at the bottom of the cylinder body to buffer the piston rod when the piston rod moves downward to prevent the piston rod from moving too fast, and a stop block, a second spring and a movable arm are provided on the surface of the piston to fix the piston rod to prevent the piston rod from unnecessary shaking. The utility model has a triple protection effect against vibration, has a significant shock-absorbing effect, and is very convenient and quick. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the interior of the cylinder body of the utility model structure;

[0017] Figure 3 This is a schematic diagram of the surface of the piston structure of the utility model;

[0018] Figure 4 It is a schematic diagram of the structural base of the utility model.

[0019] In the figure: 1, fixed seat; 2, buffer spring; 31, base; 32, fixed groove; 33, telescopic shaft; 34, first spring; 41, oil outlet pipe; 42, oil outlet valve; 43, hose; 44, oil outlet channel; 5, support rod; 6, cylinder body; 7, piston rod; 8, first oil inlet pipe; 9, second oil inlet pipe; 10, oil accumulation tank;

[0020] 11. Sealing sheet; 121. Second spring; 122. Stop block; 123. Movable bolt; 124. Movable arm;

[0021] 125, movable shaft; 126, movable block; 131, long oil delivery channel; 132, short oil delivery channel; 14, piston;

[0022] 15. The third spring; 16. The fixing block. DETAILED DESCRIPTION

[0023] In order to make the purpose and technical solution of the utility model clearly and completely described, and the advantages more clearly understood, the embodiments of the utility model are further described in detail in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are part of the embodiments of the utility model, not all of the embodiments, and are only used to explain the embodiments of the utility model, and are not used to limit the embodiments of the utility model. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] Embodiment 1

[0025] See also Figure 1-Figure 4 The utility model provides a technical solution: a shock-absorbing hydraulic oil cylinder, the shock-absorbing hydraulic oil cylinder comprises: a fixed seat 1, a base 31 and a support rod 5 are provided on the surface of the fixed seat 1, a fixed groove 32 and a telescopic shaft 33 are provided on the surface of the base 31, the telescopic shaft 33 is connected to the bottom surface of the cylinder body 6, a fixed block 16 and a third spring 15 are provided on the bottom surface of the cylinder body 6, a piston 14 is provided inside the cylinder body 6, and a first oil inlet pipe 8, a second oil inlet pipe 9 and an oil outlet pipe 41 are provided on the side of the cylinder body 6;

[0026] The hydraulic cylinder has a triple shock absorbing device, which is a first shock absorbing device consisting of an external fixed seat 1 and a support rod 5, a second shock absorbing device consisting of a fixed groove 32 on the surface of the base 31 and a telescopic shaft 33, and a third shock absorbing device consisting of a third spring 15 and a piston 14. The shock absorbing effect is very significant.

[0027] Embodiment 2

[0028] On the basis of the first embodiment, in order to improve the shock absorption effect of the hydraulic cylinder, a support rod 5 is provided, the support rod 5 is fixedly connected to the four corners of the fixed seat 1, and a buffer spring 2 is provided at the bottom of each support rod 5; a first spring 34 is provided inside the fixed groove 32, the lower surface of the first spring 34 is fixedly connected to the fixed groove 32, and the upper surface of the first spring 34 is fixedly connected to the telescopic shaft 33; the fixed block 16 is distributed on the surface of the bottom of the cylinder body 6 and the lower surface of the piston 14, and the fixed block 16 is fixedly connected to the third spring 15; a stop block 122 and an oil accumulation groove 10 are provided on the surface of the piston 14, the surface of the piston 14 is connected to the piston rod 7, a sealing sheet 11 is provided on the side of the piston 14, a second spring 121 is provided on the side of the stop block 122, and the second spring 121 is fixedly connected to the movable block 126, a movable arm 124 is provided on the surface of the movable block 126, movable bolts 123 are provided at both ends of the movable arm 124, and a movable shaft 125 is provided on the surface of the movable arm 124;

[0029] The support rods 5 are distributed at the four corners of the upper and lower fixed seats 1. The buffer springs 2 play a first buffering effect on vibration. The first spring 34 is fixedly connected to the telescopic shaft 33. After being subjected to the downward impact from the cylinder body 6, the first spring 34 will be pressed downward on the telescopic shaft 33. A movable block 126 is provided on the surface of the piston 14. A movable arm 124 is provided on the surface of the movable block 126. The movable arm 124 is connected to the piston rod 7 through a movable bolt 123. When the piston rod 7 moves up and down, the movable arm 124 moves along with it, and the second spring 121 is squeezed during the movement. The movable shaft 125 protects the movable arm 124. When the movable arm 124 reaches the extreme position, the movable arm 124 will bend at the movable shaft 125 to reduce the pressure on the movable arm 124, which has a significant protective effect on the components inside the hydraulic oil rod.

[0030] Embodiment 3

[0031] On the basis of the second embodiment, the piston rod 7 can be freely moved up and down with a first oil inlet pipe 8, the first oil inlet pipe 8 is arranged inside the cylinder body 6 and connected to the long oil delivery channel 131, and the second oil inlet pipe 9 is fixedly connected to the short oil delivery channel 132; the surface of the oil outlet pipe 41 is provided with an oil outlet valve 42, the oil outlet pipe 41 is fixedly connected to the oil outlet channel 44, and the other side of the oil outlet channel 44 is provided with a hose 43, and the hose 43 is connected to the lower surface of the piston 14;

[0032] If the piston rod 7 needs to be moved up and down, hydraulic oil can be added to the first oil inlet pipe 8 and the second oil inlet pipe 9. If the piston rod 7 is to be moved downward, hydraulic oil can be added to the first oil inlet pipe 8. The hydraulic oil enters the top of the piston 14 through the oil delivery channel 131. The piston 14 moves downward under the action of the hydraulic pressure. The sealing plate 11 prevents the hydraulic oil from leaking. Finally, the oil outlet valve 42 is opened, and the hydraulic oil above the piston 14 will enter the oil storage tank 10, pass through the hose 43, enter the oil outlet channel 44 and be discharged from the oil outlet pipe 41, and the piston rod 7 stops moving.

[0033] During actual use, when subjected to external pressure, the fixed seat 1, the support rod 5 and the buffer spring 2 will filter the vibration, the movable shaft 125 and the first spring 34 on the surface of the base 31 will reduce the vibration effect from the cylinder body 6, and the piston rod 7 is driven to reciprocate at different positions inside the cylinder body 6 through the hydraulic oil. The third spring 15 on the lower surface of the piston 14 has a buffering effect on the vibration from the piston 14, and the block 122, the second spring 121 and the movable arm 124 on the upper surface of the piston 14 will keep the piston rod 7 from shaking excessively. The utility model can filter the excess vibration of the hydraulic cylinder and is a convenient and effective shock-absorbing hydraulic cylinder.

[0034] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A shock-absorbing hydraulic cylinder, characterized in that: The shock-absorbing hydraulic oil cylinder comprises: a fixed seat (1), a base (31) and a support rod (5) are provided on the surface of the fixed seat (1), a fixed groove (32) and a telescopic shaft (33) are provided on the surface of the base (31), the telescopic shaft (33) is connected to the bottom surface of a cylinder body (6), a fixed block (16) and a third spring (15) are provided on the bottom surface of the cylinder body (6), a piston (14) is provided inside the cylinder body (6), and a first oil inlet pipe (8), a second oil inlet pipe (9) and an oil outlet pipe (41) are provided on the side surface of the cylinder body (6).

2. A shock-absorbing hydraulic cylinder according to claim 1, characterized in that: The support rods (5) are fixedly connected to the four corners of the fixing seat (1), and a buffer spring (2) is provided at the bottom of each support rod (5).

3. A shock-absorbing hydraulic cylinder according to claim 1, characterized in that: A first spring (34) is provided inside the fixing groove (32); the lower surface of the first spring (34) is fixedly connected to the fixing groove (32); and the upper surface of the first spring (34) is fixedly connected to the telescopic shaft (33).

4. A shock-absorbing hydraulic cylinder according to claim 1, characterized in that: The fixing block (16) is distributed on the surface of the bottom of the cylinder body (6) and the lower surface of the piston (14), and the fixing block (16) is fixedly connected to the third spring (15).

5. The shock-absorbing hydraulic cylinder according to claim 1, characterized in that: The surface of the piston (14) is provided with a stopper (122) and an oil accumulation groove (10); the surface of the piston (14) is connected to the piston rod (7); a sealing sheet (11) is provided on the side of the piston (14); a second spring (121) is provided on the side of the stopper (122); the second spring (121) is fixedly connected to a movable block (126); a movable arm (124) is provided on the surface of the movable block (126); movable bolts (123) are provided at both ends of the movable arm (124); and a movable shaft (125) is provided on the surface of the movable arm (124).

6. The shock-absorbing hydraulic cylinder according to claim 1, characterized in that: The first oil inlet pipe (8) is arranged inside the cylinder body (6) and connected to the long oil delivery channel (131), and the second oil inlet pipe (9) is fixedly connected to the short oil delivery channel (132).

7. The shock-absorbing hydraulic cylinder according to claim 1, characterized in that: An oil outlet valve (42) is provided on the surface of the oil outlet pipe (41), the oil outlet pipe (41) is fixedly connected to the oil outlet channel (44), a hose (43) is provided on the other side of the oil outlet channel (44), and the hose (43) is connected to the lower surface of the piston (14).

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