CN217873521U

CN217873521U - Force-multiplying pneumatic supporting cylinder

Info

Publication number: CN217873521U
Application number: CN202123173443.5U
Authority: CN
Inventors: 王志伟
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-12-16
Filing date: 2021-12-16
Publication date: 2022-11-22
Anticipated expiration: 2031-12-16

Abstract

The utility model relates to the technical field of pneumatic support cylinders, and discloses a multiple-force pneumatic support cylinder, which comprises a cylinder body, wherein a fixed cylinder is fixedly arranged on the inner wall of the cylinder body, a conical push rod is movably arranged on the inner wall of the fixed cylinder, the inner bottom wall of the conical push rod is fixedly connected with a mandril 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 mandril; when toper push rod rebound compression spring, the toper that utilizes its inner wall pushes away the face and can promote elastic jacket upward movement gradually, its lower part tightens up gradually under the pushing and squeezing effect of toper push surface when elastic jacket upward movement, and its upper portion also tightens up gradually under the effect that blocks of toper clamping ring to, can make elastic jacket shrink, hold the ejector pin tightly, reach the effect that locking supported the ejector pin, and the structure is simpler more, and the holding power is bigger, and the volume is also comparatively small and exquisite.

Description

Force-multiplying pneumatic supporting cylinder

Technical Field

The utility model relates to a pneumatic support cylinder technical field specifically is a power type pneumatic support cylinder.

Background

The pneumatic element outputs work depending on the bottom area of the piston and the air pressure, but is limited by the size of an installation space in a part of use environments, and the larger bottom area of the piston and the larger air pressure cannot be realized when larger output force is needed; in the prior art, a multiple force type cylinder (including but not limited to) generally realizes multiple force output in a single cylinder superposition mode, but the cylinder superposition mode has the disadvantages of large volume, various gas connection interfaces and complex installation and control;

based on this, we propose a kind of double-force type pneumatic support cylinder.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

Not enough to prior art, the utility model provides a doubly power type pneumatic support jar possesses small, the interface is few, the advantage that holding power is big.

(II) technical scheme

For the purpose that realizes that above-mentioned small, interface is few, holding power is big, the utility model provides a following technical scheme: a force-multiplying pneumatic support cylinder comprises a cylinder body, wherein a fixed cylinder is fixedly arranged 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 jacking sleeve is fixedly arranged at the top of the ejector rod and sleeved on the fixed cylinder, a cylinder head is fixedly arranged at the top of the jacking sleeve, a conical push surface is formed on the inner wall of the conical push rod, an elastic clamping sleeve is movably arranged on the inner wall of the conical push surface and sleeved on the outer wall of the ejector rod;

the inner wall fixed mounting at fixed section of thick bamboo top has fixed cover, the inner wall of fixed cover is provided with the toper clamping ring, the toper clamping ring cover is established on the outer wall of ejector pin, the inner wall of toper clamping ring and the outer wall at elasticity jacket top are formed with the looks coupled slope that bulldozes.

As an optimal technical scheme of the utility model, the outer wall that the elasticity pressed from both sides the cover is formed with the spacing groove, the inner wall card of spacing groove is equipped with the spacing ring, the spacing ring activity sets up on the inner wall of a fixed section of thick bamboo.

As an optimal technical scheme of the utility model, the interior roof fixed mounting of fixed cover has the bearing, toper clamping ring fixed mounting is in the bottom of bearing.

As a preferred technical scheme of the utility model, an upper piston and a lower piston are movably arranged on the inner wall of the cylinder body one above the other respectively, the upper piston is fixedly arranged at the bottom of the conical push rod, a vertical cylinder is formed at the top of the lower piston, and an inner hole is formed inside the vertical cylinder;

the inner wall threaded connection of hole has connecting bolt, connecting bolt's top is passed the vertical cylinder and is fixed continuous with last piston and toper push rod.

As an optimal technical scheme of the utility model, go up the piston and be provided with the reflecting plate down between the piston, reflecting plate fixed mounting is on the inner wall of cylinder body.

As an optimal technical scheme of the utility model, the center department of going up the piston bottom is formed with the overflow guide slot, the center department of lower piston bottom is formed with the guide slot that admits air.

As a preferred technical scheme of the utility model, a lower air inlet groove is formed in the lower part of the side wall of the cylinder body, the forming position of the lower air inlet groove corresponds to the arranging position of the lower piston, and a conical inclined plane for air inlet is formed at the edge of the bottom of the lower piston;

an upper air inlet groove is formed in the upper portion of the side wall of the cylinder body, the position of the upper air inlet groove corresponds to the position of the upper piston, and a second concave surface used for air inlet is formed in the edge of the top of the upper piston.

As an optimal technical scheme of the utility model, the middle part of cylinder body lateral wall still is provided with the breather valve, the breather valve set up the bottom that the position is located the reflecting plate, the edge at lower piston top still is formed with the first concave surface that is used for the breather valve to breathe.

(III) advantageous effects

Compared with the prior art, the utility model provides a power type pneumatic support jar possesses following beneficial effect:

1. this power type pneumatic support cylinder doubly, when toper push rod rebound compression spring, the toper that utilizes its inner wall pushes away the face and can promote elastic jacket upward movement gradually, its lower part tightens up under the pushing and squeezing effect of toper push surface gradually during elastic jacket upward movement, its upper portion also tightens up gradually under the effect that blocks of toper clamping ring, thereby, can make elastic jacket shrink, hold the ejector pin tightly, reach the effect that locking supported the ejector pin, the structure is simpler more, the holding power is bigger, the volume is also comparatively small and exquisite.

2. This power doubling type pneumatic support cylinder, the removal of toper push rod is realized through letting in of working gas flow, when needing toper push rod rebound, from the lower air inlet duct let in working gas flow can, the working gas flow that lower air inlet duct department let in passes through the air inlet guide slot, clearance and overflow guide slot between hole and the connecting bolt conduct to between supreme piston and the reflecting plate, working gas flow continuously lets in, working gas flow's pressure acts on the bottom of piston and lower piston simultaneously, thereby utilize two pistons to promote toper push rod rebound, realize power doubling output, the holding power is stronger, the volume of cylinder has also been reduced greatly simultaneously.

3. This power-multiplying type pneumatic support cylinder, when needing toper push rod downstream, from last inlet channel let in working gas flow can, the working gas flow that last inlet channel department let in promotes piston downstream, when going up piston downstream, the working gas flow that goes up between piston and the reflecting plate passes through the overflow guide slot, clearance between hole and the connecting bolt and the below of air inlet guide slot conduction to piston down, together with lower piston below originally together follow the lower inlet channel and discharge, thereby pulling toper push rod descends, toper push rod descends it breaks away from with elastic jacket, elastic jacket resumes deformation, loosen the ejector pin, the ejector pin resumes to initial position under the spring action.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic sectional view of the section B-B of FIG. 1 according to the present invention;

FIG. 3 is an enlarged schematic view of the present invention at A in FIG. 2;

fig. 4 is an enlarged schematic view of the utility model at C in fig. 2.

In the figure: 1. a cylinder body; 2. a fixed cylinder; 3. a tapered push rod; 4. a spring; 5. a top rod; 6. jacking sleeve; 7. a cylinder head; 8. an elastic jacket; 9. a limiting groove; 10. a limiting ring; 11. fixing a sleeve; 12. a bearing; 13. a conical compression ring; 14. pushing and pressing the inclined plane; 15. an upper piston; 16. a lower piston; 17. a vertical cylinder; 18. a connecting bolt; 19. an inner bore; 20. a reflective plate; 21. a lower air inlet groove; 22. an upper inlet tank; 23. a breather valve; 24. a first concave surface; 25. a second concave surface; 26. an overflow guide groove; 27. an air inlet guide groove.

Detailed Description

Example (b):

referring to fig. 1-4, a multiple-force pneumatic support cylinder includes a cylinder body 1, a fixed cylinder 2 is fixedly installed on an inner wall of the cylinder body 1, a conical push rod 3 is movably installed on an inner wall of the fixed cylinder 2, an inner bottom wall of the conical push rod 3 is fixedly connected with a push rod 5 through a spring 4, a jacking sleeve 6 is fixedly installed on a top of the push rod 5, the jacking sleeve 6 is sleeved on the fixed cylinder 2, and a cylinder head 7 is fixedly installed on the top of the jacking sleeve 6;

a conical push surface is formed on the inner wall of the conical push rod 3, an elastic jacket 8 is movably arranged on the inner wall of the conical push surface, the elastic jacket 8 is sleeved on the outer wall of the ejector rod 5, and when the conical push rod 3 moves upwards, the elastic jacket 8 can be extruded by the conical push surface to contract, so that the ejector rod 5 is tightly held;

as shown in fig. 3, a fixing sleeve 11 is fixedly mounted on the inner wall of the top of the fixing cylinder 2, a conical pressing ring 13 is arranged on the inner wall of the fixing sleeve 11, the conical pressing ring 13 is sleeved on the outer wall of the ejector rod 5, and a pushing inclined plane 14 coupled with the inner wall of the conical pressing ring 13 and the outer wall of the top of the elastic jacket 8 is formed;

when the conical push rod 3 moves upwards to compress the spring 4, the conical push surface on the inner wall of the conical push rod can gradually push the elastic jacket 8 to move upwards, when the elastic jacket 8 moves upwards, the lower part of the elastic jacket is gradually tightened under the pushing action of the conical push surface, and the upper part of the elastic jacket is also gradually tightened under the blocking action of the conical press ring 13, so that the elastic jacket 8 can be contracted and tightly hold the ejector rod 5 to achieve the effect of locking and supporting the ejector rod 5, the structure is simpler, the supporting force is larger, and the size is smaller;

as shown in fig. 3, a limiting groove 9 is formed on the outer wall of the elastic jacket 8, a limiting ring 10 is clamped on the inner wall of the limiting groove 9, the limiting ring 10 is movably arranged on the inner wall of the fixed cylinder 2, the limiting ring 10 is clamped in the limiting groove 9 to prevent the elastic jacket 8 from moving left and right, and the contraction precision is higher;

the bearing 12 is fixedly arranged on the inner top wall of the fixed sleeve 11, the conical pressing ring 13 is fixedly arranged at the bottom of the bearing 12, and the position of the conical pressing ring 13 is fixed through the bearing 12, so that the matching precision between the conical pressing ring 13 and the elastic jacket 8 is higher, and the elastic jacket 8 is more effectively pushed to be contracted;

as shown in fig. 2 and 4, an upper piston 15 and a lower piston 16 are respectively movably arranged on the inner wall of the cylinder 1 one above the other, the upper piston 15 is fixedly installed at the bottom of the conical push rod 3, a vertical cylinder 17 is formed at the top of the lower piston 16, an inner hole 19 is formed inside the vertical cylinder 17, a connecting bolt 18 is in threaded connection with the inner wall of the inner hole 19, and the top end of the connecting bolt 18 penetrates through the vertical cylinder 17 and is fixedly connected with the upper piston 15 and the conical push rod 3;

a reflecting plate 20 is arranged between the upper piston 15 and the lower piston 16, the reflecting plate 20 is fixedly arranged on the inner wall of the cylinder body 1, the reflecting plate 20 can be internally fixed, and can also be independently arranged in the middle of the cylinder body 1, in the embodiment, the airflow gain is realized through the reflecting plate 20, and when the working airflow enters from the lower air inlet groove 21, the upper piston 15 and the lower piston 16 can be simultaneously pushed to move upwards under the action of the reflecting plate 20;

as shown in fig. 4, an overflow guide groove 26 is formed at the center of the bottom of the upper piston 15 to facilitate the discharge of the working gas from the gap between the inner hole 19 and the connecting bolt 18, and an intake guide groove 27 is formed at the center of the bottom of the lower piston 16 to facilitate the entry of the working gas into the gap between the inner hole 19 and the connecting bolt 18;

as shown in fig. 4, a lower air inlet slot 21 is formed in the lower portion of the side wall of the cylinder 1, the open position of the lower air inlet slot 21 corresponds to the position of the lower piston 16, a tapered inclined surface for air intake is further formed at the edge of the bottom of the lower piston 16, when the lower piston 16 moves to be attached to the inner bottom wall of the cylinder 1, the tapered inclined surface facilitates the entry of the lower air inlet slot 21, and prevents the working gas from entering;

as shown in fig. 4, an upper air inlet groove 22 is formed in the upper portion of the side wall of the cylinder body 1, the upper air inlet groove 22 is formed at a position corresponding to the position of the upper piston 15, a second concave surface 25 for air inlet is further formed at the edge of the top of the upper piston 15, when the upper piston 15 moves to the fixed cylinder 2 to be attached, the upper air inlet groove 22 can be conveniently entered through the second concave surface 25, and the working gas can be prevented from entering;

the movement of the conical push rod 3 is realized by the introduction of working air flow, when the conical push rod 3 moves upwards, the working air flow is introduced from the lower air inlet groove 21, the working air flow introduced from the lower air inlet groove 21 is conducted to the position between the upper piston 15 and the reflecting plate 20 through the air inlet guide groove 27, the gap between the inner hole 19 and the connecting bolt 18 and the overflow guide groove 26, the working air flow is continuously introduced, the pressure of the working air flow acts on the bottoms of the upper piston 15 and the lower piston 16 simultaneously, so that the conical push rod 3 is pushed to move upwards by the two pistons, the force multiplication output is realized, the supporting force is stronger, and the volume of the cylinder is also greatly reduced;

when the conical push rod 3 needs to move downwards, working air flow is introduced from the upper air inlet groove 22, the upper piston 15 is pushed to move downwards by the working air flow introduced from the upper air inlet groove 22, when the upper piston 15 moves downwards, the working air flow between the upper piston 15 and the reflecting plate 20 is conducted to the lower part of the lower piston 16 through the overflow guide groove 26, the gap between the inner hole 19 and the connecting bolt 18 and the air inlet guide groove 27, and is discharged from the lower air inlet groove 21 together with the original working air flow below the lower piston 16, so that the conical push rod 3 is pulled to descend, the conical push rod 3 descends to be separated from the elastic jacket 8, the elastic jacket 8 recovers deformation, the push rod 5 is loosened, and the push rod 5 recovers to the initial position under the action of the spring 4;

as shown in fig. 4, a breather valve 23 is further disposed in the middle of the side wall of the cylinder 1, the breather valve 23 is disposed at the bottom of the reflection plate 20, a first concave surface 24 for breathing of the breather valve 23 is further formed at the edge of the top of the lower piston 16, and gas between the top of the lower piston 16 and the reflection plate 20 enters and exits through the breather valve 23;

in the embodiment, the upper piston 15 and the lower piston 16 are matched, so that the volume of the multi-force output is reduced by more than 50% compared with other supporting cylinders, the mounting and using method the same as that of a common cylinder is adopted, the number of joints is greatly reduced, and the control mode is simpler and more convenient.

The utility model discloses a theory of operation and use flow:

the movement of the conical push rod 3 is realized by the introduction of working air flow, when the conical push rod 3 needs to move upwards, the working air flow is introduced from the lower air inlet groove 21, the working air flow introduced from the lower air inlet groove 21 is conducted to the position between the upper piston 15 and the reflecting plate 20 through the air inlet guide groove 27, the gap between the inner hole 19 and the connecting bolt 18 and the overflow guide groove 26, the working air flow is continuously introduced, the pressure of the working air flow acts on the bottoms of the upper piston 15 and the lower piston 16 simultaneously, so that the conical push rod 3 is pushed to move upwards by utilizing the two pistons, the force multiplication output is realized, the supporting force is stronger, and the volume of the cylinder is also greatly reduced;

when the conical push rod 3 needs to move downwards, working air flow is introduced from the upper air inlet groove 22, the upper piston 15 is pushed to move downwards by the working air flow introduced from the upper air inlet groove 22, when the upper piston 15 moves downwards, the working air flow between the upper piston 15 and the reflecting plate 20 is conducted to the lower part of the lower piston 16 through the overflow guide groove 26, the gap between the inner hole 19 and the connecting bolt 18 and the air inlet guide groove 27, and is discharged from the lower air inlet groove 21 together with the original working air flow below the lower piston 16, so that the conical push rod 3 is pulled to descend, the conical push rod 3 descends to be separated from the elastic jacket 8, the elastic jacket 8 recovers deformation, the push rod 5 is loosened, and the push rod 5 recovers to the initial position under the action of the spring 4.

Claims

1. The utility model provides a multiple force type pneumatic support jar, includes cylinder body (1), the inner wall fixed mounting of cylinder body (1) has solid fixed cylinder (2), the inner wall activity of solid fixed cylinder (2) is provided with toper push rod (3), the inner diapire of toper push rod (3) passes through spring (4) fixedly connected with ejector pin (5), the top fixed mounting of ejector pin (5) has jacking cover (6), jacking cover (6) cover is established on solid fixed cylinder (2), the top fixed mounting of jacking cover (6) has cylinder head (7), its characterized in that: a conical pushing surface is formed on the inner wall of the conical pushing rod (3), an elastic jacket (8) is movably arranged on the inner wall of the conical pushing surface, and the elastic jacket (8) is sleeved on the outer wall of the ejector rod (5);

the inner wall fixed mounting at solid fixed cylinder (2) top has fixed cover (11), the inner wall of fixed cover (11) is provided with toper clamping ring (13), toper clamping ring (13) cover is established on the outer wall of ejector pin (5), the inner wall of toper clamping ring (13) and the outer wall at elastic jacket (8) top are formed with looks coupled bulldozes inclined plane (14).

2. A multiple force pneumatic support cylinder as defined in claim 1, wherein: the outer wall of the elastic jacket (8) is provided with a limiting groove (9), the inner wall of the limiting groove (9) is provided with a limiting ring (10) in a clamping manner, and the limiting ring (10) is movably arranged on the inner wall of the fixed cylinder (2).

3. A multiple force pneumatic support cylinder as defined in claim 1, wherein: the inner top wall of the fixed sleeve (11) is fixedly provided with a bearing (12), and the conical pressing ring (13) is fixedly arranged at the bottom of the bearing (12).

4. A multiple force pneumatic support cylinder as defined in claim 1, wherein: an upper piston (15) and a lower piston (16) are movably arranged on the upper portion and the lower portion of the inner wall of the cylinder body (1), the upper piston (15) is fixedly installed at the bottom of the conical push rod (3), a vertical cylinder (17) is formed at the top of the lower piston (16), and an inner hole (19) is formed in the vertical cylinder (17);

the inner wall of the inner hole (19) is in threaded connection with a connecting bolt (18), and the top end of the connecting bolt (18) penetrates through the vertical cylinder (17) and is fixedly connected with the upper piston (15) and the conical push rod (3).

5. The double force pneumatic support cylinder of claim 4, wherein: a reflecting plate (20) is arranged between the upper piston (15) and the lower piston (16), and the reflecting plate (20) is fixedly installed on the inner wall of the cylinder body (1).

6. The double-force pneumatic support cylinder as claimed in claim 5, wherein: an overflow guide groove (26) is formed in the center of the bottom of the upper piston (15), and an air inlet guide groove (27) is formed in the center of the bottom of the lower piston (16).

7. The double force pneumatic support cylinder of claim 6, wherein: a lower air inlet groove (21) is formed in the lower portion of the side wall of the cylinder body (1), the position where the lower air inlet groove (21) is formed corresponds to the position where the lower piston (16) is arranged, and a conical inclined plane for air inlet is formed in the edge of the bottom of the lower piston (16);

an upper air inlet groove (22) is formed in the upper portion of the side wall of the cylinder body (1), the opening position of the upper air inlet groove (22) corresponds to the setting position of the upper piston (15), and a second concave surface (25) used for air inlet is formed in the edge of the top of the upper piston (15).

8. A multiple force pneumatic support cylinder according to claim 7, wherein: the middle part of cylinder body (1) lateral wall still is provided with breather valve (23), the position that sets up of breather valve (23) is located the bottom of reflecting plate (20), the edge at lower piston (16) top still is formed with first concave surface (24) that are used for breather valve (23) to breathe.