Hydraulic cylinder with throttling buffer device

Abstract

The utility model discloses a hydraulic cylinder with a throttling and buffering device, which comprises a cylinder barrel, a lower sealing component, an upper sealing component, a moving component, a first buffering component and a second buffering component. The upper sealing assembly comprises an upper sealing seat connected to the top of the cylinder barrel through a screw, the moving assembly comprises a moving rod inserted into the cylinder barrel in a penetrating mode, a baffle arranged on the moving rod, a piston arranged at the bottom of the moving rod and conical columns arranged at the two ends of the piston, the first buffering assembly is arranged at the top of the upper sealing seat, and the second buffering assembly is arranged on the baffle. Gaps can be reduced through the conical column, resistance can be increased, the buffering effect is achieved, meanwhile, the first buffering assembly can prevent the piston from colliding with the lower sealing seat to be abraded, the second buffering assembly can prevent the piston from colliding with the upper sealing seat to be abraded, the buffering capacity is greatly improved, and the application range is large.

Description

Technical Field

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

[0002] A hydraulic cylinder with a throttle buffer is a special hydraulic cylinder design that is equipped with a throttle buffer to optimize its motion characteristics, especially the buffering effect when the piston approaches the cylinder head. This design helps to reduce the movement speed of the piston and piston rod, thereby preventing shock and vibration caused by sudden stops. In practical applications, hydraulic cylinders with throttle buffers are widely used in situations where precise control of piston movement speed and reduction of shock are required, such as precision machine tools, automation equipment, and heavy construction machinery. By optimizing the motion characteristics of the hydraulic cylinder, this design helps to improve the performance and service life of the equipment, reduce maintenance costs, and improve overall production efficiency.

[0003] After searching, the patent with announcement number CN2818874Y discloses a throttling and decelerating hydraulic cylinder, and its content records that "the utility model includes a cylinder and a piston, and the inlet and outlet oil ports of the cylinder are provided with a one-way throttle valve. The utility model can produce a throttling and decelerating effect at the end of the return stroke, so that the carriage slowly falls on the frame, avoiding impact on the frame, and playing a corresponding protective role on the lifting system, the frame, and the chassis of the dump truck..." From the above, it can be seen that the hydraulic cylinder of this patent has only a single throttling structure, and the buffering capacity is limited. It is easy to be damaged when encountering a large external pressure, and the scope of use is small, and there are certain shortcomings. Utility Model Content

[0004] The utility model aims to solve the problems existing in the prior art or related technologies.

[0005] To this end, the technical solution adopted by the utility model is: a hydraulic cylinder with a throttling buffer device, including a cylinder barrel, a lower sealing assembly, an upper sealing assembly, a moving assembly, a first buffer assembly and a second buffer assembly, the lower sealing assembly including a lower sealing seat screwed to the bottom of the cylinder barrel and a first oil groove arranged inside the lower sealing seat, the upper sealing assembly including an upper sealing seat screwed to the top of the cylinder barrel and a second oil groove arranged inside the upper sealing seat, the moving assembly including a moving rod inserted in the cylinder barrel, a baffle plate arranged on the moving rod, a piston arranged at the bottom of the moving rod and conical columns arranged at both ends of the piston, the first buffer assembly including a first spring arranged at the top of the upper sealing seat and a buffer plate arranged at the top of the first spring, the second buffer assembly including a limit rod arranged at the bottom end of the baffle, a limit seat inserted and connected with the limit rod, a nut threadedly connected to the limit rod and a second spring arranged at the top of the nut.

[0006] Preferably, a first inlet and outlet pipe is provided at the front end of the lower sealing seat, and the first inlet and outlet pipe is connected to the first oil groove.

[0007] Preferably, a second inlet and outlet pipe is provided at the front end of the upper sealing seat, and the second inlet and outlet pipe is connected to the second oil groove.

[0008] Preferably, the buffer plate is ring-shaped.

[0009] Preferably, the limiting seat is arranged outside the upper sealing seat, and a limiting hole for inserting a limiting rod is opened on the limiting seat.

[0010] Preferably, it further comprises a reinforcement assembly, which comprises a reinforcement rod inserted through the lower sealing seat and the upper sealing seat, a stopper arranged on the reinforcement rod, and a tightening knob threadedly connected to the reinforcement rod.

[0011] By adopting the above technical scheme, the beneficial effects achieved by the utility model are as follows: when the piston of the utility model moves to the end, its tapered column will continuously reduce the gap and increase the resistance, thereby playing a buffering effect. At the same time, the first spring of the first buffer assembly enables the buffer plate to have a certain buffering effect, thereby preventing the piston from colliding with the lower sealing seat and being worn. The second spring of the second buffer assembly enables the moving rod to have a certain buffering effect, thereby preventing the piston from colliding with the upper sealing seat and being worn. The buffering capacity is greatly increased, and the scope of use is wide. Then, the reinforcement rod of the reinforcement assembly can be clamped on the lower sealing seat and the upper sealing seat, and the tightening knob can be rotated to fix it, thereby reinforcing and preventing the lower sealing assembly and the upper sealing assembly from loosening. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of the utility model;

[0013] Figure 2 It is a schematic diagram of the connection between the cylinder barrel and the upper sealing component, the lower sealing component and the moving component of the utility model;

[0014] Figure 3 This is a schematic diagram of the structure of the first buffer component of the utility model;

[0015] Figure 4 This is a schematic diagram of the structure of the second buffer component of the utility model;

[0016] Figure 5 It is a structural schematic diagram of the reinforcement component of the utility model.

[0017] Reference numerals:

[0018] 100, cylinder;

[0019] 200, lower sealing assembly; 201, lower sealing seat; 202, first inlet and outlet pipe; 203, first oil tank;

[0020] 300, upper sealing assembly; 301, upper sealing seat; 302, second inlet and outlet pipes; 303, second oil tank;

[0021] 400, moving assembly; 401, moving rod; 402, baffle; 403, piston; 404, tapered column;

[0022] 500, first buffer assembly; 501, first spring; 502, buffer plate;

[0023] 600, second buffer assembly; 601, limiting rod; 602, limiting seat; 603, nut; 604, second spring;

[0024] 700, reinforcement assembly; 701, reinforcement rod; 702, stopper; 703, tightening knob. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is further described in detail below in combination with specific implementation methods and with reference to the accompanying drawings. It should be noted that the embodiments of the utility model and the features in the embodiments can be combined with each other without conflict.

[0026] Some embodiments of the utility model are described below in conjunction with the accompanying drawings to provide a hydraulic cylinder with a throttling buffer device.

[0027] Embodiment 1:

[0028] Reference Figure 1-4 , which is the first embodiment of the utility model, provides a hydraulic cylinder with a throttling buffer device, including a cylinder barrel 100, a lower sealing assembly 200, an upper sealing assembly 300, a moving assembly 400, a first buffer assembly 500 and a second buffer assembly 600.

[0029] Specifically, the lower sealing assembly 200 includes a lower sealing seat 201 screwed to the bottom of the cylinder 100 and a first oil groove 203 arranged inside the lower sealing seat 201. A first inlet and outlet pipe 202 is arranged at the front end of the lower sealing seat 201. The first inlet and outlet pipe 202 is connected to the first oil groove 203. The hydraulic oil can be transported to the first oil groove 203 through the first inlet and outlet pipe 202, and the hydraulic oil can be discharged through the first inlet and outlet pipe 202 so as to be pushed by hydraulic means.

[0030] Specifically, the upper sealing assembly 300 includes an upper sealing seat 301 screwed to the top of the cylinder 100 and a second oil groove 303 arranged inside the upper sealing seat 301. A second inlet and outlet pipe 302 is arranged at the front end of the upper sealing seat 301. The second inlet and outlet pipe 302 is connected to the second oil groove 303. The hydraulic oil can be transported to the second oil groove 303 through the second inlet and outlet pipe 302, and the hydraulic oil can be discharged through the second inlet and outlet pipe 302 so as to be pushed by hydraulic means.

[0031] Specifically, the moving assembly 400 includes a moving rod 401 inserted into the cylinder 100, a baffle 402 arranged on the moving rod 401, a piston 403 arranged at the bottom of the moving rod 401, and conical columns 404 arranged at both ends of the piston 403. When the piston 403 and the moving rod 401 move to the lower sealing seat 201 and the upper sealing seat 301, the conical column 404 will continuously reduce the gap, increase the resistance of the oil, and play a buffering effect.

[0032] Specifically, the first buffer assembly 500 includes a first spring 501 arranged on the top of the upper sealing seat 301 and a buffer plate 502 arranged on the top of the first spring 501. The buffer plate 502 is annular. The first spring 501 enables the buffer plate 502 to have a certain buffering effect. When the moving rod 401 and the baffle plate 402 move downward, the piston 403 can be prevented from colliding with the lower sealing seat 201 and wearing.

[0033] Specifically, the second buffer assembly 600 includes a limit rod 601 arranged at the bottom end of the baffle 402, a limit seat 602 inserted and connected to the limit rod 601, a nut 603 threadedly connected to the limit rod 601 and a second spring 604 arranged on the top of the nut 603. The second spring 604 enables the moving rod 401 to have a certain buffering effect. When the moving rod 401 moves upward, it can prevent the piston 403 from colliding with the upper sealing seat 301 and wearing, thereby greatly increasing the buffering capacity. The limit seat 602 is arranged on the outside of the upper sealing seat 301. A limit hole for inserting the limit rod 601 is opened on the limit seat 602. The limit hole enables the limit seat 602 to restrain the limit rod 601, so that the limit rod 601 can only move in the vertical direction, thereby improving stability.

[0034] Embodiment 2:

[0035] Reference Figure 1 and Figure 5, which is the second embodiment of the utility model, which is different from the first embodiment in that it also includes a reinforcement component 700, which includes a reinforcement rod 701 inserted into the lower sealing seat 201 and the upper sealing seat 301, a stopper 702 arranged on the reinforcement rod 701 and a tightening knob 703 threadedly connected to the reinforcement rod 701, and the stopper 702 has a blocking effect. When in use, the reinforcement rod 701 can be stuck on the lower sealing seat 201 and the upper sealing seat 301, and the tightening knob 703 is rotated to fix it, so as to reinforce and prevent the lower sealing component 200 and the upper sealing component 300 from loosening.

[0036] The working principle and use process of the utility model are as follows: when the piston 403 and the moving rod 401 move to the lower sealing seat 201 and the upper sealing seat 301, the tapered column 404 thereof will continuously reduce the gap, increase the resistance of the oil, and play a buffering effect. At the same time, the first spring 501 of the first buffer assembly 500 enables the buffer plate 502 to have a certain buffering effect. When the moving rod 401 and the baffle plate 402 move downward, the piston 403 can be prevented from colliding with the lower sealing seat 201 and being worn. The second spring 604 of the second buffer assembly 600 enables the moving rod 401 to have a certain buffering effect. When the moving rod 401 moves upward, the piston 403 can be prevented from colliding with the upper sealing seat 301 and being worn, which greatly increases the buffering capacity and has a wide range of use. Then, the reinforcement rod 701 of the reinforcement assembly 700 can be clamped on the lower sealing seat 201 and the upper sealing seat 301, and the tightening knob 703 can be rotated to fix it, so as to reinforce and prevent the lower sealing assembly 200 and the upper sealing assembly 300 from loosening.

[0037] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A hydraulic cylinder with a throttling buffer device, characterized in that: include: Cylinder (100); A lower sealing assembly (200) comprises a lower sealing seat (201) screwed to the bottom of the cylinder barrel (100) and a first oil groove (203) arranged inside the lower sealing seat (201); An upper sealing assembly (300) comprises an upper sealing seat (301) screwed to the top of the cylinder barrel (100) and a second oil groove (303) arranged inside the upper sealing seat (301); The moving assembly (400) comprises a moving rod (401) inserted into the cylinder (100), a baffle (402) arranged on the moving rod (401), a piston (403) arranged at the bottom of the moving rod (401), and conical columns (404) arranged at both ends of the piston (403); A first buffer assembly (500) comprising a first spring (501) arranged on the top of the upper sealing seat (301) and a buffer plate (502) arranged on the top of the first spring (501); The second buffer assembly (600) comprises a limiting rod (601) arranged at the bottom end of the baffle (402), a limiting seat (602) interlaced with the limiting rod (601), a nut (603) threadedly connected to the limiting rod (601), and a second spring (604) arranged on the top of the nut (603).

2. A hydraulic cylinder with a throttling buffer device according to claim 1, characterized in that: A first inlet and outlet pipe (202) is provided at the front end of the lower sealing seat (201), and the first inlet and outlet pipe (202) is connected to the first oil groove (203).

3. A hydraulic cylinder with a throttling buffer device according to claim 1, characterized in that: A second inlet and outlet pipe (302) is provided at the front end of the upper sealing seat (301), and the second inlet and outlet pipe (302) is connected to the second oil groove (303).

4. A hydraulic cylinder with a throttling buffer device according to claim 1, characterized in that: The buffer plate (502) is ring-shaped.

5. The hydraulic cylinder with a throttling buffer device according to claim 1, characterized in that: The limiting seat (602) is arranged outside the upper sealing seat (301), and a limiting hole for inserting the limiting rod (601) is opened on the limiting seat (602).

6. A hydraulic cylinder with a throttling buffer device according to claim 1, characterized in that: The invention also comprises a reinforcement assembly (700), wherein the reinforcement assembly (700) comprises a reinforcement rod (701) inserted into the lower sealing seat (201) and the upper sealing seat (301), a stopper (702) arranged on the reinforcement rod (701), and a tightening knob (703) threadedly connected to the reinforcement rod (701).

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