CN219865668U

CN219865668U - In-cylinder supercharging type pneumatic supporting cylinder

Info

Publication number: CN219865668U
Application number: CN202321081543.1U
Authority: CN
Inventors: 王志伟
Original assignee: Individual
Current assignee: Individual
Priority date: 2023-05-08
Filing date: 2023-05-08
Publication date: 2023-10-20
Anticipated expiration: 2033-05-08

Abstract

The utility model relates to the technical field of supporting cylinders, in particular to an in-cylinder supercharging type pneumatic supporting cylinder, which comprises: a cylinder body, wherein a support rod is movably inserted in the cylinder body; the jacket assembly is arranged in the cylinder body and sleeved on the outer side of the supporting rod, so as to lock the axial position of the supporting rod; the utility model also comprises a pneumatic piston and a booster piston which are arranged in the cylinder body, the pneumatic piston and the booster piston are connected and are sleeved outside the jacket assembly, an air passage is arranged between the pneumatic piston and the booster piston, the utility model realizes air inlet and exhaust to the inside of the cylinder barrel by adopting a single air inlet and exhaust port, because the air inlet and the air outlet are integrated on one interface, the required interface is effectively reduced, the convenience of operation is improved, the pneumatic piston and the pressurizing piston are adopted to directly move downwards to drive the jacket assembly to move, the force doubling pressurizing is realized, and the supporting strength of the supporting rod is effectively improved while the volume of the whole cylinder body is reduced.

Description

In-cylinder supercharging type pneumatic supporting cylinder

Technical Field

The utility model relates to the technical field of supporting cylinders, in particular to an in-cylinder supercharging type pneumatic supporting cylinder.

Background

The pneumatic element depends on the piston bottom area and the air pressure to do work output, but is limited by the size of the installation space in part of use environments, and can not realize larger piston bottom area and air pressure when larger output force is needed; in the prior art, the force doubling type air cylinder (including but not limited to) generally realizes force doubling output in a single air cylinder superposition mode, but the air cylinder superposition mode is large in volume, various in air receiving interfaces and complex in installation and control.

In order to solve the above problem, a force doubling pneumatic support cylinder disclosed in prior art chinese patent publication No. CN 217873521U "comprises a cylinder body, a fixed cylinder is fixedly mounted on the inner wall of the cylinder body, a conical push rod is movably arranged on the inner wall of the fixed cylinder, an ejector rod is fixedly connected to the inner bottom wall of the conical push rod through a spring, a conical push surface is formed on the inner wall of the conical push rod, an elastic jacket is movably arranged on the inner wall of the conical push surface, and the elastic jacket is sleeved on the outer wall of the ejector rod.

By adopting the scheme, the size of the cylinder body can be effectively reduced while the pressurization in the cylinder is realized, but the design of the upper piston and the lower piston in the cylinder is realized by externally connecting two air source connectors, so that the whole structure is further optimized, and further improvement is necessary.

Disclosure of Invention

The utility model aims to solve the defects in the prior art and provides an in-cylinder supercharging type pneumatic supporting cylinder.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

an in-cylinder supercharging type pneumatic support cylinder is designed, comprising:

the side end of the cylinder body is provided with an air inlet and an air outlet, and a support rod is movably inserted in the cylinder body;

the jacket assembly is arranged in the cylinder body and sleeved on the outer side of the supporting rod, so as to be used for locking the axial position of the supporting rod;

the air inlet and outlet device is characterized by further comprising a piston assembly which is arranged in the cylinder body and sleeved outside the jacket assembly, wherein the piston assembly comprises an air pressure piston and a pressurizing piston connected with the air pressure piston, an air passage is arranged between the air pressure piston and the pressurizing piston, the air passage is communicated with the air inlet and outlet device, and when air flow enters the air inlet and outlet device, the air flow can be split to the upper surfaces of the air pressure piston and the pressurizing piston to realize pressurizing and pushing downwards, so that the jacket assembly is driven to fix the supporting rod.

Further, the cylinder body comprises a cylinder barrel, a front cover and a rear cover connected to two opening sides of the cylinder barrel, and the support rod and the front cover Xiang Chajie.

Furthermore, a reflection ring is further arranged in the cylinder barrel, the air pressure piston and the pressurizing piston are respectively positioned on two sides of the reflection ring, and a breather valve is further arranged between the reflection ring and the air pressure piston.

Further, the air pressure piston is sleeved outside the pressurizing piston, an accommodating cavity for accommodating the jacket assembly is formed in the pressurizing piston, and the piston assembly is provided with a through hole for the supporting rod to penetrate through.

Further, the pneumatic piston is in threaded connection with the pressurizing piston.

Further, a reset member is provided between the cylinder and the piston assembly.

Further, the jacket assembly includes:

elastic jacket, be equipped with in the elastic jacket with bracing piece looks adaptation's through-hole:

the annular sleeve is sleeved on the outer side of the elastic jacket, a conical cavity matched with the elastic jacket is arranged in the annular sleeve, the annular sleeve is connected with the piston assembly, and the piston assembly drives the annular sleeve to move so as to squeeze the elastic jacket to clamp the supporting rod;

and the elastic piece is connected between the elastic jacket and the annular sleeve.

Further, the elastic piece is a corrugated spring; the collet assembly also includes a rolling member disposed between the resilient collet and the collar.

Further, the airway includes:

at least one first guide hole formed on the pneumatic piston, the first guide hole extending to an upper surface of the pneumatic piston;

at least one second guide hole is formed in the pressurizing piston, and the second guide hole is communicated with the first guide hole and extends to the upper surface of the pressurizing piston.

Further the airway includes:

the first guide hole is formed in the cylinder body and extends to the upper surface of the pressurizing piston;

the second guide hole is formed in the cylinder body and extends to the upper surface of the pneumatic piston, and the first guide hole and the second guide hole are communicated through a channel.

The utility model provides an in-cylinder supercharging type pneumatic supporting cylinder, which has the beneficial effects that: according to the utility model, air inlet and air exhaust are realized in the cylinder barrel by adopting the single air inlet and air outlet, and the air inlet and air exhaust are integrated on one interface, so that the needed interface is effectively reduced, the convenience of operation is improved, and secondly, the air pressure piston and the pressurizing piston are adopted to directly move down to drive the jacket assembly to move, so that the force-doubling pressurizing is realized, the whole cylinder body volume is reduced, and the supporting strength of the supporting rod is effectively improved.

Drawings

FIG. 1 is a front view of a first embodiment of the present utility model;

FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;

FIG. 3 is a schematic diagram of the enlarged structure of FIG. 2;

fig. 4 is a schematic structural diagram of a second embodiment of the present utility model.

In the figure: 1. a cylinder; 11. an air inlet and an air outlet; 12. a support rod; 121. a support head; 122. a protective sleeve; 123. a spring set; 13. a reflective ring; 14. a respiratory valve; 15. a cylinder barrel, 16 and a front cover; 17. a rear cover; 2. a jacket assembly; 21. an elastic jacket; 22. a ring sleeve; 23. a rolling member; 24. a wave spring; 3. a pneumatic piston; 31a, 31b, a first guide hole; 4. a pressurizing piston; 41a, 41b; a second guide hole; 42. a reset member; 43. a channel.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.

Referring to fig. 1-3, an embodiment of the present utility model discloses an in-cylinder pressurization type pneumatic supporting cylinder, which is used for solving the defects of large volume and multiple interfaces in the prior art, and the supporting cylinder comprises:

the cylinder body 1 is provided with an air inlet and outlet 11 at the side end, and a supporting rod 12 is movably inserted into the cylinder body 1. In this embodiment, the cylinder 1 includes a cylinder 15, and a front cover 16 and a rear cover 17 connected to two opening sides of the cylinder 15, where sealing rings are disposed on the outer sides of the front cover 16 and the rear cover 17, so as to increase the tightness of connection with the cylinder 15, of course, a sealing ring may also be disposed at the connection between the support rod 12 and the front cover 16, in this embodiment, two sealing rings are disposed on the inner side of the front cover 16 and the outer side of the support rod 12, the support rod 12 is inserted into the front cover 16, and a single air inlet/outlet 11 is adopted to realize air inlet/outlet for the inner part of the cylinder 15, so that the required interface is effectively reduced.

The jacket assembly 2 is arranged in the cylinder body 1 and sleeved on the outer side of the supporting rod 12, so as to be used for locking the axial position of the supporting rod 12.

The cylinder is characterized by further comprising a piston assembly which is arranged in the cylinder body 1 and sleeved outside the jacket assembly 2, wherein the piston assembly comprises an air pressure piston 3 and a pressurizing piston 4 connected with the air pressure piston 3, and a sealing ring is further arranged on the outer sides of the air pressure piston 3 and the pressurizing piston 4, which are attached to the cylinder barrel, so that the tightness of connection is improved, and a sealing ring is also arranged between the top of the pressurizing piston 4 and the attaching position of the air pressure piston 3.

The air pressure piston 3 and the pressurizing piston 4 are connected and are sleeved on the outer side of the jacket assembly 2, an air passage is arranged between the air pressure piston 3 and the pressurizing piston 4, the air passage is communicated with the air inlet and outlet 11 on the cylinder body 1, so that when air flow enters the air inlet and outlet 11, the air flow can be split to the upper surfaces of the air pressure piston 3 and the pressurizing piston 4 to realize pressurizing and pushing downwards, and the jacket assembly 2 is driven to fix the supporting rod 12.

Specifically, in the utility model, the air inlet and the air outlet are realized in the cylinder 15 by adopting a single air inlet and air outlet 11, so that the required interfaces are effectively reduced, the convenience of operation is improved, and secondly, the jacket assembly 2 is driven to move by adopting the pneumatic piston 3 and the pressurizing piston 4 to realize double-force pressurizing; in addition, the piston assembly is sleeved on the outer side of the jacket assembly 2, so that the support rod 12 is connected in the piston assembly in a penetrating manner, the whole structure of the support cylinder is more compact, the size is smaller, and the support strength of the support rod 12 is effectively improved.

In some embodiments, a reflection ring 13 is further disposed in the cylinder 15, sealing rings are disposed on both inner and outer sides of the reflection ring 13, in this embodiment, the reflection ring 13 is clamped in the cylinder 15 through at least two clamping springs, the air pressure piston 3 and the pressurizing piston 4 are respectively disposed on both sides of the reflection ring 13, a breather valve 14 is further disposed between the reflection ring 13 and the air pressure piston 3, and the breather valve 14 is used for exhausting air between the air pressure piston 3 and the reflection plate 13.

In some embodiments of the present utility model, the air pressure piston 3 is sleeved outside the pressurizing piston 4, the pressurizing piston 4 is provided with a containing cavity for containing the jacket assembly 2, and the piston assembly is provided with a through hole for the supporting rod 12 to pass through.

Specifically, the air pressure piston 3 and the pressurizing piston 4 can be hollow and have two open ends, so that the air pressure piston 3 can be sleeved outside the pressurizing piston 4, the whole volume of the piston assembly is reduced, and meanwhile, a larger use space is provided in the pressurizing piston 4, so that the jacket assembly 2 can be installed in the use space of the pressurizing piston 4, and the whole structure of the supporting cylinder is more compact and smaller. The supporting rod 12 is inserted into the jacket assembly 2, and at least one end of the supporting rod 12 penetrates through the through holes of the pneumatic piston 3 and the pressurizing piston 4 and extends to the outer side of the piston assembly, so that the supporting rod 12 is clamped by the two pistons and the jacket assembly 2, and the supporting strength of the supporting rod 12 is further improved.

In some embodiments of the present utility model, the air pressure piston 3 and the pressurizing piston 4 can be connected through screws, in the present utility model, the air pressure piston 3 and the pressurizing piston 4 are connected through threads, the inner wall of the air pressure piston 3 is provided with internal threads, the outer wall of the pressurizing piston 4 is provided with external threads, and the air pressure piston 3 and the pressurizing piston 4 are fixedly connected through the cooperation of the internal threads and the external threads.

Further, a return member 42 is provided between the cylinder 1 and the piston assembly. The return member 42 may be a return spring, one end of which is connected to the bottom of the cylinder 1 and the other end of which is connected to the bottom of the pressurizing piston 4. When working air flows into the upper surface of the piston assembly through the air inlet and outlet 11 and pushes the piston assembly to move downwards, the reset piece 42 is in a compressed state; when the work is finished, the working air flow is discharged from the air inlet and outlet 11, and the pressurizing piston 4 pushes the air pressure piston 3 to move upwards and reset together under the action of the reset piece 42.

In addition, the air inlet end of the air inlet and outlet 11 is located above the side of the air pressure piston 3, a diversion inclined plane is further provided at the bottom of the front cover 16, and the diversion inclined plane is used for entering air flow, so that the front cover 16 and the air pressure piston 3 are prevented from being tightly attached, and air flow cannot enter between the front cover 16 and the air pressure piston 3.

The air passage in this embodiment includes at least one first guide hole 31a provided in the air pressure piston 3, the first guide hole 31a extending to the upper surface of the air pressure piston 3, and at least one second guide hole 41a provided in the pressure increasing piston 4, the second guide hole 41a communicating with the first guide hole 31a and extending to the upper surface of the pressure increasing piston 4. As shown in fig. 3, an air flow gap is formed between the upper surface of the air pressure piston 3 and the cylinder 1, and the air inlet and outlet 11 may communicate with the air flow gap. When the air pressure booster is used, working air flows enter the air flow gap through the air inlet and outlet 11, at the moment, a part of working air flows are diffused on the upper surface of the air pressure piston 3 to push the air pressure piston 3 to move downwards, and the other part of working air flows through the first guide hole 31a and the second guide hole 41a to enter the upper surface of the booster piston 4 to push the booster piston 4 to move downwards, so that air flows push the air pressure piston 3 and the booster piston 4 to move simultaneously, and a pushing effect of boosting by double force is realized. After the completion of the work, the working gas flows through the second guide hole 41a and the first guide hole 31a into the upper surface of the air pressure piston 3, and is then discharged through the intake and exhaust port 11.

Based on the above embodiment, the jacket assembly 2 of the present utility model includes an elastic jacket 21, a collar 22 and an elastic member 24. The elastic jacket 21 may be a conical jacket, in which a through hole matched with the support rod 12 is provided, the ring jacket 22 is sleeved outside the elastic jacket 21, a conical cavity matched with the elastic jacket 21 is provided in the ring jacket 22, the ring jacket 22 is connected with the piston assembly, and the piston assembly drives the ring jacket 22 to move so as to squeeze the elastic jacket 21 to deform and clamp the support rod 12. The elastic member 24 is connected between the elastic jacket 21 and the collar 22, and has one end connected to the bottom end of the elastic jacket 21 and the other end connected to the bottom end of the collar 22. The elastic member 24 may be a bellows spring, when the booster piston 4 drives the collar 22 to move downward, the bellows spring is compressed, and after the air flow on the air pressure piston 3 and the booster piston 4 is discharged, the collar 22 can move upward to the starting position under the elastic force of the elastic member 24. By designing the elastic member 24 as a corrugated spring with higher stability, the elastic member has no spiral torque, namely, a non-archimedes wire, so that the elastic member is cut in a non-directional manner when being contracted or expanded, the problem that the elastic member is easy to wind to cause pressure change failure in the prior art is avoided, the fixing stability of the support rod 12 in the whole support cylinder is improved, and the misoperation probability of the fixing failure is avoided.

In some embodiments of the present utility model, to facilitate installation of the bellows spring, the collet assembly 2 may further include a fixing member, which may include an upper fixing member coupled to the bottom end of the collar 22 and a lower fixing member coupled to the bottom of the elastic collet 21, and the bellows spring is disposed between the upper and lower fixing members.

Further, rolling elements 23 are further provided between the ring 22 and the elastic jacket 21, and the rolling elements 23 may be balls. The rolling elements 23 can reduce friction between the ring sleeve 22 and the elastic jacket 21, and in this embodiment, the ring sleeve 22 can be fixed in the booster piston 4, so that when the booster piston 4 moves down, the ring sleeve 22 is driven to move down, and the elastic jacket 21 is pressed against by the inner conical surface of the ring sleeve 22 to shrink, so as to clamp the support rod 12.

In other words, in the embodiment of the present utility model, the top end of the support rod 12 extending to the front cover 16 is further provided with a dust cover 121, and a protective sleeve 122 is further connected between the dust cover 121 and the front cover 16, and in this embodiment, the protective sleeve 122 is a corrugated sleeve, so as to ensure the expansion requirement of the support rod 12.

In addition, a spring group 123 is provided between the support rod 12 and the rear cover 17.

Specifically, a groove is formed between the opposite surfaces of the support rod 12 and the rear cover 17, a spring set 123 is disposed between the two grooves, and the spring set 123 is configured to maintain the restoring capability of the support rod 12, where in this embodiment, the spring set 123 includes at least one spring member.

The specific working principle is as follows:

externally connected with an air source to enable air flow to enter the air inlet and outlet 11;

the air flow enters the cylinder 15 through the gap between the upper end surface of the air pressure piston 3 and the front cover 16;

because the sealing ring in the front cover 16 is stopped by the sealing ring at the lower part of the air pressure piston 3, one part of air flow is sealed at the upper end surface of the air pressure piston 3, the other part of air flow enters the first guide hole 31a at the end surface of the air pressure piston 3 and is conducted to the upper surface of the pressurizing piston 4 through the second guide hole 41a, under the action of the reflecting ring 13, the air flow pressure acts on the end surface of the pressurizing piston 4 to push the jacket assembly 2 downwards, so that the jacket assembly 2 is turned from radial force to axial force to shrink inwards under the conduction of the annular sleeve 22 and the elastic jacket 21 through the rolling piece 23, the elastic jacket 21 is deformed and tightened, and the locking support rod 12 achieves the locking support function;

after the work is finished, the air flow is discharged through the air inlet and outlet 11, and the air pressure piston 3 and the pressurizing piston 4 return to the initial positions under the action of the reset piece 42;

the jacket assembly 2 is pushed by the bottom elastic piece 24, the ring sleeve 22 moves upwards, the gap between the rolling pieces 23 is enlarged, the rolling pieces are separated from the elastic jacket 21, the elastic jacket 21 elastically returns, and the support rod 12 is loosened. Lifting to a starting position under the action of the spring group 123;

the air flow between the bottom of the air pressure piston 3 and the reflecting ring 13 is discharged by the breather valve 14;

the fixing and releasing of the support rods 12 are realized in a sequential circulation mode.

Embodiment two;

referring to fig. 4, the same points as those of the first embodiment are not described in detail, and the difference is that: the air passage in this embodiment includes a first guide hole 31b and a second guide hole 41b opened inside the cylinder tube, the second guide hole 41b extending to the upper surface of the air pressure piston 3 for guiding the air flow to the upper surface of the air pressure piston 3 to push the air pressure piston 3 to move, and the first guide hole 31b extending to the upper surface of the pressurizing piston 4 for guiding the air flow to the upper surface of the pressurizing piston 4 to push the pressurizing piston 4 to move. The first guide hole 31b and the second guide hole 41b can communicate with each other through the passage 43, and thus air flow can be introduced into the first guide hole 31b and the second guide hole 41b simultaneously through the intake/exhaust port 11.

The intake and exhaust ports 11 may communicate with the passage 43, and of course, may also communicate with the first guide hole 31b or with the second guide hole 41 b. In the present utility model, the intake and exhaust port 11 communicates with the second guide hole 41b, and for convenience of processing, one end of the passage 43 penetrates to the outside of the cylinder tube 15, and this end can be sealed by a sealing plug when in use, and the other end of the first guide hole 31b, which is remote from the pressurizing piston 4, penetrates to the outside of the cylinder tube 15, and this end can be sealed by a sealing plug when in use.

Specifically, in this embodiment, the specific working principle is the same as that of the embodiment, and the outer channel tail end sealing mode is adopted, so that the air channel is not formed between the air pressure piston 3 and the pressurizing piston 4, the work of the secondary piston is performed by means of the first guide hole 31b and the second guide hole 41b which are mutually communicated, the manufacturing is more convenient, the penetrating channel 43 adopts a penetrating design, and the first guide hole 31b and the second guide hole 41b can be communicated by directly punching during production, so that the processing is simple.

The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.

Claims

1. An in-cylinder supercharging pneumatic support cylinder, comprising:

the cylinder body (1) is provided with an air inlet and outlet (11) at the side end, and a supporting rod (12) is movably inserted into the cylinder body (1);

the jacket assembly (2) is arranged in the cylinder body (1) and sleeved on the outer side of the supporting rod (12) so as to lock the axial position of the supporting rod (12);

the novel air-pressure type hydraulic cylinder is characterized by further comprising a piston assembly which is arranged in the cylinder body (1) and sleeved outside the jacket assembly (2), wherein the piston assembly comprises an air pressure piston (3) and a pressurizing piston (4) connected with the air pressure piston (3), an air passage is arranged between the air pressure piston (3) and the pressurizing piston (4), the air passage is communicated with the air inlet and outlet (11), and when air enters the air inlet and outlet (11), the air flow can be split to the upper surfaces of the air pressure piston (3) and the pressurizing piston (4) to realize pressurizing downward pushing, so that the jacket assembly (2) is driven to fix the supporting rod (12).

2. An in-cylinder supercharging pneumatic support cylinder as claimed in claim 1, wherein: the cylinder body (1) comprises a cylinder barrel (15), and a front cover (16) and a rear cover (17) which are connected to two opening sides of the cylinder barrel (15), and the supporting rod (12) is inserted into the front cover (16).

3. An in-cylinder supercharging pneumatic support cylinder as claimed in claim 2, wherein: the inside of cylinder (15) still is provided with a reflection ring (13), pneumatic piston (3) and booster piston (4) are located respectively the both sides of reflection ring (13), reflection ring (13) with still be provided with a breather valve (14) between pneumatic piston (3).

4. A cylinder-in-cylinder supercharging pneumatic support cylinder as claimed in any one of claims 1 to 3, wherein: the air pressure piston (3) is sleeved outside the pressurizing piston (4), a containing cavity for containing the jacket assembly (2) is formed in the pressurizing piston (4), and the piston assembly is provided with a through hole for the supporting rod (12) to penetrate through.

5. An in-cylinder pressurized pneumatic support cylinder as claimed in claim 4, wherein said pneumatic piston (3) is threadedly connected to said pressurizing piston (4).

6. An in-cylinder pressurized pneumatic support cylinder according to claim 1, further comprising a return member (42) disposed between the cylinder block (1) and the piston assembly.

7. An in-cylinder pressurized pneumatic support cylinder according to claim 1, wherein said jacket assembly (2) comprises:

elastic jacket (21), be equipped with in elastic jacket (21) with bracing piece (12) looks adaptation's through-hole:

the ring sleeve (22) is sleeved on the outer side of the elastic jacket (21), a conical cavity matched with the elastic jacket (21) is arranged in the ring sleeve (22), the ring sleeve (22) is connected with the piston assembly, and the ring sleeve (22) is driven to move through the piston assembly so as to squeeze the elastic jacket (21) to clamp the supporting rod (12);

and an elastic member (24) connected between the elastic jacket (21) and the ring sleeve (22).

8. An in-cylinder pressure-increasing pneumatic support cylinder as claimed in claim 7, wherein said elastic member (24) is a wave spring;

the collet assembly (2) further comprises a rolling element (23) arranged between the elastic collet (21) and the collar (22).

9. An in-cylinder supercharging pneumatic support cylinder as claimed in claim 1, wherein the air passage comprises:

at least one first guide hole (31 a) formed in the air pressure piston (3), the first guide hole (31 a) extending to the upper surface of the air pressure piston (3);

at least one second guide hole (41 a) formed in the pressurizing piston (4), the second guide hole (41 a) communicating with the first guide hole (31 a) and extending to the upper surface of the pressurizing piston (4).

10. An in-cylinder supercharging pneumatic support cylinder as claimed in claim 1, wherein the air passage comprises:

a first guide hole (31 b) which is provided on the cylinder (1) and extends to the upper surface of the pressurizing piston (4);

and a second guide hole (41 b) which is formed in the cylinder (1) and extends to the upper surface of the air pressure piston (3), wherein the first guide hole (31 b) and the second guide hole (41 b) are communicated with each other through a channel (43).