CN112664603A - Stepless speed regulation air spring - Google Patents
Stepless speed regulation air spring Download PDFInfo
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- CN112664603A CN112664603A CN202011520390.7A CN202011520390A CN112664603A CN 112664603 A CN112664603 A CN 112664603A CN 202011520390 A CN202011520390 A CN 202011520390A CN 112664603 A CN112664603 A CN 112664603A
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Abstract
The invention relates to the technical field of springs, in particular to a stepless speed regulation gas spring. The stepless speed regulation gas spring comprises a pressure cylinder; a piston slidably mounted within the pressure tube; the piston rod is fixedly arranged on the piston, and the top end of the piston rod extends out of the pressure cylinder; the sealing cover is arranged on the top side of the pressure cylinder, and the piston rod penetrates through the sealing cover; the sealing element is sleeved on the piston and is in sliding sealing connection with the inner wall of the piston; a plurality of damping devices mounted on a bottom side of the piston; and the pressure relief mechanism is arranged in the piston. The stepless speed regulation gas spring provided by the invention has the advantages of simple structure and buffer protection.
Description
Technical Field
The invention relates to the technical field of springs, in particular to a stepless speed regulation gas spring.
Background
The gas spring is an industrial accessory which can play a role in supporting, buffering, braking, height adjustment, angle adjustment and the like. It is composed of the following parts: the device comprises a pressure cylinder, a piston rod, a piston, a sealing guide sleeve, a filler (inert gas or oil-gas mixture), an in-cylinder control element, an out-cylinder control element (a controllable gas spring), a joint and the like. The principle is that inert gas or oil-gas mixture is filled in a closed pressure cylinder, the pressure in a cavity is several times or dozens of times higher than the atmospheric pressure, and the motion of a piston rod is realized by utilizing the pressure difference generated by the cross section area of the piston rod smaller than that of the piston. Due to the fundamental difference in principle, the gas spring has very remarkable advantages compared with the common spring: the speed is relatively slow, the dynamic force change is not large (generally within 1: 1.2), and the control is easy.
Most of the existing gas springs do not have a buffering protection mechanism, the gas springs are commonly used in some traveling mechanisms, the bottom ends of the gas springs are directly contacted with the ground to realize a traveling function, long-time friction easily causes cylinder explosion and air leakage, a piston loses gas support, and the piston can collide with the bottom of a pressure cylinder to different degrees when the stroke of the gas spring reaches a terminal, so that the gas springs are damaged to a certain extent.
Therefore, there is a need to provide a new stepless speed-regulating gas spring to solve the above technical problems.
Disclosure of Invention
The invention aims to provide an electrodeless speed-regulating gas spring which is simple in structure and has buffering protection.
In order to solve the technical problem, the stepless speed regulation gas spring provided by the invention comprises: the device comprises a pressure cylinder, a piston rod, a sealing cover, a sealing element, a plurality of buffering devices and a pressure relief mechanism, wherein the piston is slidably arranged in the pressure cylinder, the piston rod is fixedly arranged on the piston, and the top end of the piston rod extends out of the pressure cylinder; the sealing cover is arranged on the top side of the pressure cylinder, and the piston rod penetrates through the sealing cover; the sealing element is sleeved on the piston, and the sealing element is connected with the inner wall of the piston in a sliding and sealing manner, and the buffer device is arranged at the bottom side of the piston; the pressure relief mechanism is arranged in the piston.
Preferably, the buffering device comprises a sliding rod, a plurality of grooves are formed in the bottom side of the piston, the sliding rod is slidably mounted in the grooves, the bottom end of the sliding rod extends out of the grooves and is connected with the same buffering plate, a spring is mounted in the grooves, the top end of the spring is fixedly connected with the inner wall of the top side of the grooves, and the bottom end of the spring is fixedly connected with the sliding rod.
Preferably, the inner walls of the two sides of the groove are provided with limit grooves, the two sides of the sliding rod are fixedly provided with limit blocks, and the limit blocks are connected with the limit grooves in a sliding mode.
Preferably, a supporting rod is fixedly installed in the limiting groove, and the limiting block is in sliding sleeve connection with the supporting rod.
Preferably, the pressure relief mechanism comprises a cavity formed in the piston, a plurality of first communication holes are formed in the top side of the piston and communicated with the cavity, a second communication hole is formed in the inner wall of the bottom side of the cavity, a fixing rod is fixedly mounted on the top side of the buffer plate, the top end of the fixing plate extends into the second communication hole and is fixedly provided with a rubber sealing plug, and the rubber sealing plug is connected with the inner wall of the second communication hole in a sealing and sliding mode.
Preferably, the draw-in groove has all been seted up to the both sides of pressure cylinder, the standing groove has all been seted up to the both sides of sealed lid, the through-hole has been seted up on one side inner wall of standing groove, slidable mounting has the kelly in the through-hole, the one end of kelly extends to in the draw-in groove, the lead screw is installed to the through-hole internal rotation, the lead screw with the kelly screw sleeve connects, the other end of lead screw extends to in the standing groove and fixed mounting has the handle.
Preferably, slide rails are fixedly mounted on the inner wall of the top side and the inner wall of the bottom side of the through hole, slide blocks are fixedly mounted on the top side and the bottom side of the clamping rod, and the slide rails are slidably connected with the slide blocks.
Preferably, a bearing is installed in the through hole, and an inner ring of the bearing is fixedly sleeved with the screw rod.
Preferably, a sealing ring groove is formed in the top side of the pressure cylinder, a sealing ring is fixedly mounted on the bottom side of the sealing cover, and the sealing ring is matched with the sealing ring groove.
Preferably, a sealing ring is installed in the sealing ring groove, and the sealing ring is in contact with the sealing ring.
Compared with the related art, the stepless speed regulation gas spring provided by the invention has the following beneficial effects:
the invention provides a stepless speed regulation gas spring, which is provided with a buffer device to buffer and protect a piston, so that the piston is prevented from colliding with a terminal to different degrees when the piston stroke reaches the terminal, certain damage is generated to the gas spring, and the buffer effect is good; the pressure relief mechanism is arranged to perform pressure relief on the strong pressure side, so that the pressure cylinder is protected from being damaged.
Drawings
Fig. 1 is a schematic structural diagram of a preferred embodiment of a stepless speed-regulating gas spring provided by the invention;
FIG. 2 is an enlarged view of portion A of FIG. 1;
FIG. 3 is an enlarged view of the portion B shown in FIG. 2;
FIG. 4 is a schematic structural view of a second embodiment of a stepless speed-regulating gas spring according to the present invention;
FIG. 5 is an enlarged view of the portion C shown in FIG. 4;
fig. 6 is a schematic top view of the cylinder shown in fig. 4.
Reference numbers in the figures: 1. the sealing device comprises a pressure cylinder, 2, a piston, 3, a piston rod, 4, a sealing cover, 5, a sealing piece, 6, a groove, 7, a sliding rod, 8, a spring, 9, a buffer plate, 11, a first communicating hole, 12, a cavity, 13, a second communicating hole, 14, a fixing rod, 15, a rubber sealing plug, 16, a clamping groove, 17, a placing groove, 18, a through hole, 19, a clamping rod, 20, a screw rod, 21, a bearing, 22, a handle, 23, a sliding rail, 24, a sliding block, 25, a sealing ring groove, 26, a sealing ring, 27 and a sealing ring.
Detailed Description
The invention is further described with reference to the following figures and embodiments.
The first embodiment:
referring to fig. 1-3, in a first embodiment of the present invention, a stepless speed-regulating gas spring includes: the device comprises a pressure cylinder 1, a piston 2, a piston rod 3, a sealing cover 4, a sealing piece 5, a plurality of buffering devices and a pressure relief mechanism, wherein the piston 2 is installed in the pressure cylinder 1 in a sliding mode; the piston rod 3 is fixedly arranged on the piston 2, and the top end of the piston rod 3 extends out of the pressure cylinder 1; the sealing cover 4 is arranged on the top side of the pressure cylinder 1, and the piston rod 3 penetrates through the sealing cover 4; the sealing element 5 is sleeved on the piston 2, and the sealing element 5 is connected with the inner wall of the piston 2 in a sliding and sealing manner; the buffer device is arranged at the bottom side of the piston 2; the pressure relief mechanism is arranged in the piston 2.
The buffering device comprises a sliding rod 7, a plurality of grooves 6 are formed in the bottom side of the piston 2, the sliding rod 7 is slidably mounted in the grooves 6, the bottom end of the sliding rod 7 extends out of the grooves 6 and is connected with a same buffering plate 9, a spring 8 is mounted in each groove 6, the top end of the spring 8 is fixedly connected with the inner wall of the top side of each groove 6, the bottom end of the spring 8 is fixedly connected with the sliding rod 7, when the stroke of the piston 2 reaches the terminal, the buffering plate 9 firstly contacts the bottom side of the pressure cylinder 1, and the buffering plate 9 drives the sliding rod 7 to compress the spring 8 for buffering.
The limiting grooves are formed in the inner walls of the two sides of the groove 6, limiting blocks are fixedly mounted on the two sides of the sliding rod 7, and the limiting blocks are connected with the limiting grooves in a sliding mode.
Limiting groove fixed mounting has branch, the stopper with branch slip cup joints.
The pressure relief mechanism comprises a cavity 12 formed in the piston 2, a plurality of first through holes 11 are formed in the top side of the piston 2, the first through holes 11 are communicated with the cavity 12, a second through hole 13 is formed in the inner wall of the bottom side of the cavity 12, a fixing rod 14 is fixedly mounted on the top side of the buffer plate 9, the top end of the fixing plate 14 extends into the second through hole 13 and is fixedly mounted with a rubber sealing plug 15, the rubber sealing plug 15 is connected with the inner wall of the second through hole 13 in a sealing and sliding manner, the buffer plate 9 drives the sliding rod 7 to move and also drives the fixing rod 14 to move, the fixing rod 14 drives the rubber sealing plug 15 to move, when the rubber sealing plug 15 moves into the cavity 12, the first through hole 11 is communicated with the second through hole 13, the two ends of the piston 2 are communicated, and the strong pressure side performs strong side pressure relief through the first through hole, protecting the pressure cylinder from damage.
The working principle of the stepless speed-regulating gas spring provided by the invention is as follows:
when the stroke of the piston 2 reaches the terminal, the buffer plate 9 firstly contacts the bottom side of the pressure cylinder 1, the buffer plate 9 drives the sliding rod 7 to compress the spring 8 for buffering, the buffer plate 9 drives the sliding rod 7 to move and simultaneously drives the fixed rod 14 to move, the fixed rod 14 drives the rubber sealing plug 15 to move, when the rubber sealing plug 15 moves into the cavity 12, the first connecting hole 11 is communicated with the second connecting hole 13, the two ends of the piston 2 are communicated, the strong pressure side carries out strong side pressure release through the first connecting hole 11 and the second connecting hole 13, and the pressure cylinder is protected from being damaged.
Compared with the related art, the stepless speed regulation gas spring provided by the invention has the following beneficial effects:
the invention provides a stepless speed regulation gas spring, which is characterized in that a buffering device is arranged to buffer and protect a piston 2, so that the piston 2 is prevented from colliding to different degrees when the stroke reaches the terminal, certain damage is caused to the gas spring, and the buffering effect is good; the pressure relief mechanism is arranged to perform pressure relief on the strong pressure side, so that the pressure cylinder is protected from being damaged.
Second embodiment:
based on the stepless speed-regulating gas spring provided by the first embodiment of the application, the second embodiment of the application provides another stepless speed-regulating gas spring. The second embodiment is merely a preferred way of the first embodiment, and the implementation of the second embodiment does not affect the implementation of the first embodiment alone.
The second embodiment of the present invention will be further described with reference to the drawings and the following description.
Referring to fig. 1-6, in a second embodiment of the present invention, a stepless speed-regulating gas spring includes: the device comprises a pressure cylinder 1, a piston 2, a piston rod 3, a sealing part 5 of a sealing cover 4, a plurality of buffering devices and a pressure relief mechanism, wherein the piston 2 is slidably arranged in the pressure cylinder 1; the piston rod 3 is fixedly arranged on the piston 2, and the top end of the piston rod 3 extends out of the pressure cylinder 1; the sealing cover 4 is arranged on the top side of the pressure cylinder 1, and the piston rod 3 penetrates through the sealing cover 4; the sealing element 5 is sleeved on the piston 2, and the sealing element 5 is connected with the inner wall of the piston 2 in a sliding and sealing manner; the buffer device is arranged at the bottom side of the piston 2, and the pressure relief mechanism is arranged in the piston 2.
The buffering device comprises a sliding rod 7, a plurality of grooves 6 are formed in the bottom side of the piston 2, the sliding rod 7 is slidably mounted in the grooves 6, the bottom end of the sliding rod 7 extends out of the grooves 6 and is connected with a same buffering plate 9, a spring 8 is mounted in each groove 6, the top end of the spring 8 is fixedly connected with the inner wall of the top side of each groove 6, the bottom end of the spring 8 is fixedly connected with the sliding rod 7, when the stroke of the piston 2 reaches the terminal, the buffering plate 9 firstly contacts the bottom side of the pressure cylinder 1, and the buffering plate 9 drives the sliding rod 7 to compress the spring 8 for buffering.
The limiting grooves are formed in the inner walls of the two sides of the groove 6, limiting blocks are fixedly mounted on the two sides of the sliding rod 7, and the limiting blocks are connected with the limiting grooves in a sliding mode.
Limiting groove fixed mounting has branch, the stopper with branch slip cup joints.
The pressure relief mechanism comprises a cavity 12 formed in the piston 2, a plurality of first through holes 11 are formed in the top side of the piston 2, the first through holes 11 are communicated with the cavity 12, a second through hole 13 is formed in the inner wall of the bottom side of the cavity 12, a fixing rod 14 is fixedly mounted on the top side of the buffer plate 9, the top end of the fixing plate 14 extends into the second through hole 13 and is fixedly mounted with a rubber sealing plug 15, the rubber sealing plug 15 is connected with the inner wall of the second through hole 13 in a sealing and sliding manner, the buffer plate 9 drives the sliding rod 7 to move and also drives the fixing rod 14 to move, the fixing rod 14 drives the rubber sealing plug 15 to move, when the rubber sealing plug 15 moves into the cavity 12, the first through hole 11 is communicated with the second through hole 13, the two ends of the piston 2 are communicated, and the strong pressure side performs strong side pressure relief through the first through hole, protecting the pressure cylinder from damage.
Draw-in groove 16 has all been seted up to the both sides of pressure cylinder 1, standing groove 17 has all been seted up to the both sides of sealed lid 4, through-hole 18 has been seted up on one side inner wall of standing groove 17, slidable mounting has kelly 19 in the through-hole 18, kelly 19's one end extends to in the draw-in groove 16, lead screw 20 is installed to the through-hole 18 internal rotation, lead screw 20 with kelly 19 threaded sleeve connects, lead screw 20's the other end extends to in the standing groove 17 and fixed mounting has handle 22.
Slide rails 23 are fixedly mounted on the inner wall of the top side and the inner wall of the bottom side of the through hole 18, slide blocks 24 are fixedly mounted on the top side and the bottom side of the clamping rod 19, and the slide rails 23 are slidably connected with the slide blocks 24.
A bearing 21 is arranged in the through hole 18, and an inner ring of the bearing 21 is fixedly sleeved with the screw rod 20.
The top side of the pressure cylinder 1 is provided with a sealing ring groove 25, the bottom side of the sealing cover 4 is fixedly provided with a sealing ring 27, and the sealing ring 27 is matched with the sealing ring groove 25.
A sealing ring 26 is arranged in the sealing ring groove 25, and the sealing ring 27 is in contact with the sealing ring 26.
The working principle of the stepless speed-regulating gas spring provided by the invention is as follows:
when the stroke of the piston 2 reaches the terminal, the buffer plate 9 firstly contacts the bottom side of the pressure cylinder 1, the buffer plate 9 drives the slide rod 7 to compress the spring 8 for buffering, the buffer plate 9 drives the slide rod 7 to move and also drives the fixed rod 14 to move, the fixed rod 14 drives the rubber sealing plug 15 to move, when the rubber sealing plug 15 moves into the cavity 12, the first connecting hole 11 is communicated with the second connecting hole 13, the two ends of the piston 2 are communicated, the strong pressure side carries out strong side pressure relief through the first connecting hole 11 and the second connecting hole 13 to protect the pressure cylinder from being damaged, when the sealing cover 4 needs to be disassembled to inspect and maintain the interior of the pressure cylinder 1, the handle 22 is rotated, the handle 22 drives the screw rod 20 to rotate, the screw rod 20 drives the clamping rod 19 to be separated from the clamping groove 16, and the sealing cover; the pressure cylinder 1 can be sealed through the sealing ring groove 25, the sealing ring 26 and the sealing ring 27, and the gas leakage is prevented from causing insufficient elasticity of the gas spring.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A stepless speed-regulating gas spring is characterized by comprising: the device comprises a pressure cylinder (1), a piston (2), a piston rod (3), a sealing cover (4), a sealing element (5), a plurality of buffering devices and a pressure relief mechanism, wherein the piston (2) is slidably mounted in the pressure cylinder (1); the piston rod (3) is fixedly arranged on the piston (2), and the top end of the piston rod (3) extends out of the pressure cylinder (1); the sealing cover (4) is arranged on the top side of the pressure cylinder (1), the piston rod (3) penetrates through the sealing cover (4), the sealing element (5) is sleeved on the piston (2), and the sealing element (5) is connected with the inner wall of the piston (2) in a sliding and sealing mode; the buffer device is arranged at the bottom side of the piston (2); the pressure relief mechanism is arranged in the piston (2).
2. The stepless speed-regulating gas spring as claimed in claim 1, is characterized in that the buffering device comprises a sliding rod (7), a plurality of grooves (6) are formed in the bottom side of the piston (2), the sliding rod (7) is slidably mounted in the grooves (6), the bottom end of the sliding rod (7) extends out of the grooves (6) and is connected with the same buffering plate (9), a spring (8) is mounted in the grooves (6), the top end of the spring (8) is fixedly connected with the inner wall of the top side of the grooves (6), and the bottom end of the spring (8) is fixedly connected with the sliding rod (7).
3. Stepless speed-regulating gas spring according to claim 2, characterized in that the inner walls of the two sides of the groove (6) are provided with limit grooves, and the two sides of the sliding rod (7) are fixedly provided with limit blocks, and the limit blocks are connected with the limit grooves in a sliding manner.
4. A stepless speed-regulating gas spring as claimed in claim 2, wherein a support rod is fixedly mounted in the limiting groove, and the limiting block is slidably sleeved with the support rod.
5. Stepless speed-regulating gas spring according to claim 2, characterized in that the pressure relief mechanism comprises a cavity (12) opened on the piston (2), the top side of the piston (2) is provided with a plurality of first communication holes (11), the first communication holes (11) are communicated with the cavity (12), the bottom inner wall of the cavity (12) is provided with a second communication hole (13), the top side of the buffer plate (9) is fixedly provided with a fixing rod (14), the top end of the fixing plate (14) extends into the second communication hole (13) and is fixedly provided with a rubber sealing plug (15), and the rubber sealing plug (15) is connected with the inner wall of the second communication hole (13) in a sealing and sliding manner.
6. The stepless speed-regulating gas spring as claimed in claim 1, wherein clamping grooves (16) are formed in both sides of the pressure cylinder (1), placing grooves (17) are formed in both sides of the sealing cover (4), a through hole (18) is formed in an inner wall of one side of each placing groove (17), a clamping rod (19) is slidably mounted in each through hole (18), one end of each clamping rod (19) extends into each clamping groove (16), a lead screw (20) is rotatably mounted in each through hole (18), the lead screw (20) is in threaded sleeve connection with the corresponding clamping rod (19), and the other end of the lead screw (20) extends into each placing groove (17) and is fixedly provided with a handle (22).
7. Stepless speed-regulating gas spring according to claim 6, characterized in that sliding rails (23) are fixedly mounted on the inner walls of the top and bottom sides of the through hole (18), sliding blocks (24) are fixedly mounted on the top and bottom sides of the clamping rod (19), and the sliding rails (23) are connected with the sliding blocks (24) in a sliding manner.
8. Stepless speed-regulating gas spring according to claim 6, characterized in that a bearing (21) is installed in the through hole (18), and the inner ring of the bearing (21) is fixedly sleeved with the lead screw (20).
9. The stepless speed-regulating gas spring as claimed in claim 1, wherein a sealing ring groove (25) is formed on the top side of the pressure cylinder (1), a sealing ring (27) is fixedly mounted on the bottom side of the sealing cover (4), and the sealing ring (27) is matched with the sealing ring groove (25).
10. Stepless speed-regulating gas spring according to claim 9, characterized in that a sealing ring (26) is mounted in the sealing ring groove (25), and the sealing ring (27) is in contact with the sealing ring (26).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011520390.7A CN112664603B (en) | 2020-12-21 | 2020-12-21 | Stepless speed regulating gas spring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011520390.7A CN112664603B (en) | 2020-12-21 | 2020-12-21 | Stepless speed regulating gas spring |
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| CN112664603A true CN112664603A (en) | 2021-04-16 |
| CN112664603B CN112664603B (en) | 2023-05-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011520390.7A Active CN112664603B (en) | 2020-12-21 | 2020-12-21 | Stepless speed regulating gas spring |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114688195A (en) * | 2022-04-29 | 2022-07-01 | 邵阳市通达汽车零部件制造有限公司 | Gas spring with adjustable stroke |
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| GB881194A (en) * | 1958-01-18 | 1961-11-01 | Garringtons Ltd | Improvements relating to shock absorbers |
| CN2331538Y (en) * | 1998-04-28 | 1999-08-04 | 曹善明 | Controllable gas spring device |
| CN205190618U (en) * | 2015-11-25 | 2016-04-27 | 南京江凯汽车零部件有限公司 | Rotary valve pin type speed governing air spring |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114688195A (en) * | 2022-04-29 | 2022-07-01 | 邵阳市通达汽车零部件制造有限公司 | Gas spring with adjustable stroke |
| CN114688195B (en) * | 2022-04-29 | 2023-08-29 | 邵阳市通达汽车零部件制造有限公司 | Stroke-adjustable gas spring |
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| Publication number | Publication date |
|---|---|
| CN112664603B (en) | 2023-05-12 |
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Effective date of registration: 20230420 Address after: No.33, gongaoheng 1st Road, xiniupi village, Dalang Town, Dongguan City, Guangdong Province, 523770 Applicant after: DONGGUAN DUSHI CHENGFA PRECISION SPRING CO.,LTD. Address before: Fuyuan Industrial Park, 1000 Yanshan Road, Huangdao District, Qingdao City, Shandong Province 266599 Applicant before: Ding Jinnian |
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