Parallel damping cylinder

Abstract

The utility model belongs to the technical field of air cylinders, and particularly relates to a parallel type damping air cylinder which comprises an air cylinder and a first piston rod, a damping cylinder is assembled on one side of the air cylinder through an assembly structure, and the damping cylinder comprises a front end cover, a rear end cover, a first cavity, a second cavity, a first piston and a second piston rod. The second piston rod and the first piston rod move synchronously through an assembling structure, an oil way is formed in the damping cylinder, one end of the oil way extends to the front end cover to the interior of the first cavity, the other end of the oil way extends to the rear end cover to the interior of the second cavity, and an adjusting mechanism is arranged on the damping cylinder. The adjusting mechanism is used for adjusting the flowing speed of oil in the oil way. Through cooperation of the damping cylinders, quick response of the cylinders is guaranteed, more stable movement is achieved through damping adjustment of the damping cylinders, the overall stability and precision of a system are improved, and the parallel damping cylinders are simple and reliable in assembly and structure and quite convenient and practical to disassemble and assemble.

Description

Technical Field

[0001] The utility model belongs to the technical field of cylinders, and specifically relates to a parallel damping cylinder. Background Art

[0002] The cylinder is a key component in mechanical devices. Cylinders are widely used in multiple fields such as engines, automated production lines, and robots, and are important components for realizing mechanical transmission and control.

[0003] The existing cylinders mainly consist of the following parts: cylinder barrel, end caps, piston, piston rod, etc. Its working principle is based on Pascal's law, and energy is converted by the compression and expansion of gas in a sealed space to drive the piston to perform linear or swinging motion.

[0004] Currently, the existing cylinders in the prior art have the following disadvantages: The cylinders driven by gas may have unstable motion due to air pressure fluctuations during movement, resulting in a decrease in the accuracy of the processed parts driven, seriously affecting the normal use of the system. Therefore, a parallel damping cylinder is proposed to address the above problems. Summary of the Utility Model

[0005] In order to make up for the deficiencies of the existing cylinders and solve the problem that the cylinders driven by gas may have unstable motion due to air pressure fluctuations during movement, resulting in a decrease in the accuracy of the processed parts driven, seriously affecting the normal use of the system, a parallel damping cylinder is proposed.

[0006] The technical solution adopted by the utility model to solve its technical problems is as follows: A parallel damping cylinder of the utility model includes a cylinder and a first piston rod movably arranged on the cylinder. One side of the cylinder is assembled with a damping cylinder through an assembly structure. The damping cylinder includes a front end cap, a rear end cap, a first chamber, a second chamber, a first piston, and a second piston rod. The second piston rod moves synchronously with the first piston rod through the assembly structure. An oil passage is opened on the damping cylinder. One end of the oil passage extends to the inside of the first chamber through the front end cap, and the other end extends to the inside of the second chamber through the rear end cap.

[0007] Preferably, a retaining ring is arranged in the oil passage, and an adjusting mechanism is arranged on the damping cylinder. The adjusting mechanism is used to adjust the flow rate of the oil in the oil passage.

[0008] Preferably, the adjusting mechanism includes a throttle valve rod and an adjusting bolt for adjusting the throttle valve rod.

[0009] Preferably, the assembly structure includes a connecting flange connected to the front ends of the cylinder and the damping cylinder, and a connecting component connected to the first piston rod and the second piston rod.

[0010] Preferably, a pressure relief passage is provided on the first piston, and a one-way valve mechanism is provided on one side of the outlet of the pressure relief passage. The one-way valve mechanism is used to quickly reset the first piston rod.

[0011] Preferably, the one-way valve mechanism includes a fixed seat, a movable seat, and a first spring for pushing the movable seat against the outlet of the pressure relief passage.

[0012] Preferably, an oil replenishing mechanism is provided on one side of the damping cylinder. The oil replenishing mechanism includes a cylinder body, a second piston movably arranged in the cylinder body, a second spring arranged in the cylinder body for pushing the second piston to move, a fuel storage cavity in the cylinder body, and a one-way valve interface for replenishing oil into the cylinder body. The oil replenishing mechanism is communicated with the damping cylinder through a connecting passage.

[0013] Advantages of the present utility model:

[0014] The present utility model provides a parallel damping cylinder. Through the cooperation of the damping cylinder, it effectively prevents the first piston rod from moving unstably due to air pressure fluctuations during the movement of the cylinder. And due to the incompressibility of the oil in the damping cylinder, a more stable damping effect can be provided. Combining the two can, while ensuring the quick response of the cylinder, obtain a smoother movement through the damping adjustment of the damping cylinder, improving the overall stability and precision of the system;

[0015] The damping adjustment function of the damping cylinder can enable the cylinder to reduce unnecessary energy consumption by adjusting the damping when full-speed movement is not required, thereby improving the overall energy efficiency of the system;

[0016] Moreover, the assembly of the parallel damping cylinder has a simple and reliable structure and is very convenient and practical for disassembly and assembly. Description of the Drawings

[0017] The drawings described herein are used to provide a further understanding of the present utility model and form a part of this application. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation to the present utility model. In the drawings:

[0018] Figure 1 is the overall structural plan view of Embodiment 1;

[0019] Figure 2 is the structural sectional view of the damping cylinder in Embodiment 1;

[0020] Figure 3 is Figure 2 the enlarged structural view at A in

[0021] Figure 4 is Figure 2 the enlarged structural view at B in

[0022] Figure 5 It is a structural sectional view of the damping cylinder in the second embodiment;

[0023] Legend:

[0024] 1. Cylinder; 101. First piston rod; 100. Assembly structure; 01. Connecting flange; 02. Connecting component; 2. Damping cylinder; 201. Front end cover; 202. Rear end cover; 203. First chamber; 204. Second chamber; 3. First piston; 301. Pressure relief passage; 4. Second piston rod; 5. Check valve mechanism; 501. Fixed seat; 502. Movable seat; 503. First spring; 6. Oil passage; 601. Retaining ring; 7. Adjusting mechanism; 701. Throttle valve rod; 702. Adjusting bolt; 8. Oil replenishing mechanism; 801. Second piston; 802. Oil storage chamber; 803. Second spring; 804. Check valve interface; 9. Connecting passage. Specific implementation mode

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0026] The following gives specific embodiments.

[0027] Embodiment 1:

[0028] Please refer to Figures 1-4 , a parallel damping cylinder of the present invention includes a cylinder 1 and a first piston rod 101 movably arranged on the cylinder 1. One side of the cylinder 1 is assembled with a damping cylinder 2 through an assembly structure 100. The damping cylinder 2 includes a front end cover 201, a rear end cover 202, a first chamber 203, a second chamber 204, a first piston 3, and a second piston rod 4. The second piston rod 4 moves synchronously with the first piston rod 101 through the assembly structure 100. An oil passage 6 is opened on the damping cylinder 2. One end of the oil passage 6 extends to the inside of the first chamber 203 through the front end cover 201, and the other end extends to the inside of the second chamber 204 through the rear end cover 202;

[0029] A retaining ring 601 is provided in the oil passage 6, and an adjusting mechanism 7 is provided on the damping cylinder 2. The adjusting mechanism 7 is used to adjust the flow rate of the oil in the oil passage 6. The adjusting mechanism 7 includes a throttle valve rod 701 and an adjusting bolt 702 for adjusting the throttle valve rod 701. A pressure relief passage 301 is formed in the first piston 3, and a one-way valve mechanism 5 is provided on one side of the outlet of the pressure relief passage 301. The one-way valve mechanism 5 is used to quickly reset the first piston rod 101. The one-way valve mechanism 5 includes a fixed seat 501, a movable seat 502, and a first spring 503 for pushing the movable seat 502 against the outlet of the pressure relief passage 301. During operation, the cylinder 1 is connected to an external air source. When it is necessary to extend the first piston rod 101 outward during ventilation, the first piston rod 101 moves and drives the second piston rod 4 to move at the same time. The second piston rod 4 drives the first piston 3 to move towards the front end cover 201. At this time, the oil in the first chamber 203 enters the oil passage 6 under the push of the first piston 3. Since there is pressure in the first chamber 203 to push the movable seat 502 to tightly block the pressure relief passage 301, preventing the oil from flowing through the pressure relief passage 301 to the second chamber 204. Previously, the operator needed to use the adjusting mechanism 7 to adjust the flow rate of the oil flowing from the oil passage 6 to the second chamber 204. Rotate the adjusting bolt 702. When the adjusting bolt 702 drives the throttle valve rod 701 to gradually approach the retaining ring 601, the gap between the retaining ring 601 and the throttle valve rod 701 gradually decreases, thereby reducing the flow rate of the oil when flowing to the second chamber 204, increasing the flow resistance of the oil, increasing the damping of the movement of the second piston rod 4, and thus increasing the damping of the first piston rod 101 synchronously. Conversely, adjusting the adjusting mechanism 7 in the reverse direction reduces the damping of the second piston rod 4 restraining the first piston rod 101. The principle is the same as above and will not be elaborated here. When it is necessary to control the first piston rod 101 to retract into the cylinder 1, the second piston rod 4 also retracts together. The first piston 3 moves towards the rear end cover 202. At this time, the pressure of the oil is in the second chamber 204. The oil in the second chamber 204 applies pressure to the one-way valve mechanism 5, pushing the movable seat 502 open, and at the same time compressing the first spring 503. At this time, the pressure relief passage 301 is opened, and the oil in the second chamber 204 quickly flows into the first chamber 203 through the pressure relief passage 301, accelerating the retraction speed of the first piston rod 101. Through the cooperation of the above structures, it effectively prevents the first piston rod 101 from moving unstably due to air pressure fluctuations during the movement of the cylinder 1. And due to the incompressibility of the oil in the damping cylinder 2, a more stable damping effect can be provided. Combining the two can ensure the quick response of the cylinder 1 while obtaining a more stable movement through the damping adjustment of the damping cylinder 2, improving the overall stability and accuracy of the system; the damping adjustment function of the damping cylinder 2 enables the cylinder 1 to reduce unnecessary energy consumption by adjusting the damping when it does not need to move at full speed, thereby improving the overall energy efficiency of the system.

[0030] Further, the assembly structure 100 includes a connecting flange 01 connected to the front ends of the cylinder 1 and the damping cylinder 2, and a connecting component 02 connected to the first piston rod 101 and the second piston rod 4. During operation, when assembling the cylinder 1 and the damping cylinder 2, first, the cylinder 1 and the damping cylinder 2 are fixedly assembled through the connecting flange 01, and then the connecting component 02 is sleeved on the first piston rod 101 and the second piston rod 4 through fixing bolts, thus completing the assembly of the parallel damping cylinder. The structure is simple and reliable, and the disassembly and assembly are very convenient and practical.

[0031] Further, an oil replenishing mechanism 8 is provided on one side of the damping cylinder 2. The oil replenishing mechanism 8 includes a cylinder body, in which a second piston 801 is movably arranged. A second spring 803 for pushing the second piston 801 to move is also arranged in the cylinder body. It further includes an oil storage cavity 802 in the cylinder body and a one-way valve interface 804 for replenishing oil to the cylinder body. The oil replenishing mechanism 8 is communicated with the damping cylinder 2 through a connecting channel 9. During operation, the oil in the damping cylinder 2 is consumed, and oil needs to be added to the damping cylinder 2. First, the one-way valve interface 804 can prevent the oil in the oil replenishing mechanism 8 from leaking out. The staff connects an external oil pipeline to the one-way valve interface 804, and the oil can enter the oil replenishing mechanism 8 from the outside, ensuring the normal use of the parallel damping cylinder.

[0032] Embodiment 2:

[0033] Please refer to Figure 5 , on the basis of Embodiment 1, when it is required to have a damping function when the first piston rod 101 retracts into the cylinder 1, the one-way valve mechanism 5 is installed in the second chamber 204. When the first piston rod 101 retracts, due to the cooperation of the one-way valve mechanism 5, the internal oil in the second chamber 204 cannot quickly flow into the first chamber 203 through the pressure relief channel 301, but flows through the adjusting mechanism 7 into the oil passage 6 and then into the first chamber 203. The principle is the same as that of Embodiment 1, except that the installation position of the one-way valve mechanism 5 is different, so as to achieve the function of different damping directions.

[0034] In the description of this specification, the descriptions referring to terms such as "one embodiment", "example", "specific example", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0035] The basic principle, main features and advantages of the present utility model have been shown and described above. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and all these changes and improvements fall within the scope of the present utility model claimed.

Claims

1. A parallel damping cylinder, comprising a cylinder (1) and a first piston rod (101) movably arranged on the cylinder (1), characterized in that: One side of the cylinder (1) is assembled with a damping cylinder (2) through an assembly structure (100). The damping cylinder (2) includes a front end cover (201), a rear end cover (202), a first chamber (203), a second chamber (204), a first piston (3), and a second piston rod (4). The second piston rod (4) is synchronized with the first piston rod (101) during movement through the assembly structure (100). An oil passage (6) is provided on the damping cylinder (2). One end of the oil passage (6) extends into the first chamber (203) from the front end cover (201), and the other end extends into the second chamber (204) from the rear end cover (202). A retaining ring (601) is provided in the oil passage (6). An adjusting mechanism (7) is provided on the damping cylinder (2). The adjusting mechanism (7) is used to adjust the flow rate of the oil in the oil passage (6). The adjusting mechanism (7) includes a throttle valve rod (701) and an adjusting bolt (702) for adjusting the throttle valve rod (701).

2. The parallel damping cylinder according to claim 1, wherein: The assembly structure (100) includes a connecting flange (01) connected to the front ends of the cylinder (1) and the damping cylinder (2), and a connecting component (02) connected to the first piston rod (101) and the second piston rod (4).

3. The parallel damping cylinder according to claim 1, characterized in that: A pressure relief passage (301) is provided on the first piston (3). A one-way valve mechanism (5) is provided on one side of the outlet of the pressure relief passage (301). The one-way valve mechanism (5) is used to quickly reset the first piston rod (101).

4. The parallel damping cylinder according to claim 3, wherein: The one-way valve mechanism (5) includes a fixed seat (501), a movable seat (502), and a first spring (503) for pushing the movable seat (502) against the outlet of the pressure relief passage (301).

5. A parallel damping cylinder according to claim 1, characterized in that: An oil replenishing mechanism (8) is provided on one side of the damping cylinder (2). The oil replenishing mechanism (8) includes a cylinder body, a second piston (801) movably arranged in the cylinder body, a second spring (803) for pushing the second piston (801) to move in the cylinder body, an oil storage chamber (802) in the cylinder body, and a one-way valve interface (804) for replenishing oil into the cylinder body. The oil replenishing mechanism (8) is communicated with the damping cylinder (2) through a connecting passage (9).

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