CN217842184U

CN217842184U - Rotary cylinder with vertical output

Info

Publication number: CN217842184U
Application number: CN202222170216.5U
Authority: CN
Inventors: 陈伟雄
Original assignee: Xiamen Egux Fluid Control Equipment Co ltd
Current assignee: Xiamen Egux Fluid Control Equipment Co ltd
Priority date: 2022-08-17
Filing date: 2022-08-17
Publication date: 2022-11-18
Anticipated expiration: 2032-08-17

Abstract

The utility model provides a revolving cylinder of perpendicular output, including last cylinder body and lower cylinder body, still include: a piston, a swing arm and an output shaft; wherein, the upper cylinder body and the lower cylinder body are internally provided with movable cavities suitable for the movement of the pistons, and the upper cylinder body and the lower cylinder body are both provided with air holes communicated to the movable cavities; the output shaft is vertically connected to one end of the swing arm, is fixed on the upper cylinder body and can rotate on the upper cylinder body; the other end of the swing arm is movably arranged on the piston and is configured to drive the output shaft to rotate when the piston moves up and down. Through the utility model discloses the scheme for revolving cylinder can not leak gas when using, can save tolerance's use.

Description

Rotary cylinder with vertical output

Technical Field

The utility model relates to a revolving cylinder technical field particularly, relates to a revolving cylinder of perpendicular output.

Background

In a precise analysis instrument, a rotary air cylinder with vertical output is often used for realizing the function of rotary switching, and an air source is generally provided by a small and miniature air cylinder. The conventional rotary cylinder is a vane type rotary cylinder, and the vane type rotary cylinder drives a rotating shaft to rotate by using vanes so as to realize a vertical rotation function and has the advantages of bidirectional rotation and high output power in unit time. However, the blades of the blade-type rotating cylinder are inevitably easy to leak gas, and the space required for accommodating the blades is large, so that the gas utilization rate is low, the gas tank needs to be frequently replaced, on one hand, the waste of a gas source is caused, and on the other hand, the analysis effect is easily influenced.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a revolving cylinder of perpendicular output, simple structure, the operation is convenient, aims at solving current revolving cylinder application and leaks gas easily and the more problem of required tolerance in accurate analytical instrument.

The utility model adopts the following scheme:

the application provides a revolving cylinder of perpendicular output, including last cylinder body and lower cylinder body, still include: a piston, a swing arm and an output shaft; wherein, the upper cylinder body and the lower cylinder body are internally provided with movable cavities suitable for the movement of the pistons, and the top of the upper cylinder body and the bottom of the lower cylinder body are both provided with air holes communicated to the movable cavities; the upper cylinder body is provided with at least one through mounting hole which is suitable for mounting the output shaft and exposing the output end of the output shaft; the piston is arranged in the movable cavity and is suitable for moving up and down in the movable cavity; the output shaft is vertically connected to one end of the swing arm, is fixed on the upper cylinder body and can rotate on the upper cylinder body; the other end of the swing arm is movably arranged on the piston and is configured to drive the output shaft to rotate when the piston moves up and down.

Further, the piston comprises a base plate and a semi-cylinder, the base plate is matched with the movable cavity, a longitudinal groove and a transverse groove are formed in the semi-cylinder, and a pressure rod is arranged at one end, connected with the piston, of the swing arm, wherein the swing arm is suitable for moving in the longitudinal groove, and the pressure rod is arranged in the transverse groove and suitable for moving in the transverse groove.

Further, a piston sealing ring is arranged between the chassis and the lower cylinder body.

Furthermore, two limiting blocks are arranged in a movable cavity in the upper cylinder body, and a gap for mounting the swing arm is formed between the limiting blocks.

Furthermore, the circular arc side of semicylinder is provided with two stabilizing pins symmetrically, the stabilizing pins expose the two sides of the semicylinder and respectively contact with the side of the limiting block and the inner wall of the movable cavity. Furthermore, the middle part of the output shaft is fixedly connected with the swing arm through a set screw.

Furthermore, an outer thread joint is arranged on the air hole, and a joint sealing ring is arranged between the outer thread joint and the upper cylinder body or the lower cylinder body.

Further, the external thread joint of the lower cylinder body is arranged below the semi-cylinder.

Further, the upper cylinder body is connected with the lower cylinder body through a bolt, and a cylinder body sealing ring is arranged at the joint of the upper cylinder body and the lower cylinder body.

Further, a rotating shaft sealing ring is arranged between the output shaft and the upper cylinder body.

Has the advantages that:

through the utility model discloses the scheme, this revolving cylinder compact structure is favorable to saving space, and adopts the piston drive output shaft rotatory, can not produce the condition of gas leakage, and the air supply provides under the inconvenient condition can make to use longer time under less air supply in inseparable analytical instrument, plays the effect of economizing gas. On the other hand, the volume in the movable cavity is small, so that the air quantity required for driving the piston to move is less, the air loss is low, and the effects of saving air and improving the air utilization efficiency are further achieved.

Drawings

Fig. 1 is a schematic view of an overall structure of a vertical output rotary cylinder according to an embodiment of the present invention;

fig. 2 is a schematic cross-sectional structure diagram of a vertical output rotary cylinder according to an embodiment of the present invention;

fig. 3 is an exploded view of a vertical output rotary cylinder according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of components inside a cylinder body of a vertical output rotary cylinder according to an embodiment of the present invention;

fig. 5 is a schematic diagram of a piston structure of a vertical output rotary cylinder according to an embodiment of the present invention;

fig. 6 is a schematic view of a connection structure between a piston and an upper cylinder of a vertical output rotary cylinder according to an embodiment of the present invention;

fig. 7 is a schematic structural view of an upper cylinder of a vertical output rotary cylinder according to an embodiment of the present invention;

icon: the device comprises an upper cylinder body 11, a limiting block 111, a mounting hole 112, a lower cylinder body 12, a movable cavity 13, an air hole 14, a cylinder body sealing ring 16, a piston 20, a chassis 21, a semi-cylinder 22, a longitudinal groove 221, a transverse groove 222, a piston sealing ring 23, a swing arm 30, a pressure rod 31, an output shaft 40, a seat sleeve 50, a set screw 60, an external thread joint 70, a joint sealing ring 71, a positioning pin 80, a stabilizing pin 90 and a bolt 100.

Detailed Description

Examples

As shown in fig. 1 to 7, the present embodiment provides a vertical output rotary cylinder, which includes an upper cylinder 11 and a lower cylinder 12, and further includes: a piston 20, a swing arm 30, and an output shaft 40; wherein, a movable cavity 13 suitable for the movement of the piston 20 is formed in the upper cylinder 11 and the lower cylinder 12, and air holes 14 communicated to the movable cavity 13 are respectively arranged on the top of the upper cylinder 11 and the bottom of the lower cylinder 12; the piston 20 is arranged in the movable cavity 13 and is suitable for moving up and down in the movable cavity 13; the output shaft 40 is vertically connected to one end of the swing arm 30, is fixed on the upper cylinder body 11, and can rotate on the upper cylinder body 11; the other end of the swing arm 30 is movably disposed on the piston 20, and is configured to drive the output shaft 40 to rotate when the piston 20 moves up and down.

Referring to fig. 1 to 3, in the present invention, the upper cylinder 11 and the lower cylinder 12 are connected in a sealing manner to form a cylinder of a rotary cylinder, and a movable cavity 13 for accommodating the piston 20, the swing arm 30 and the output shaft 40 is formed in the upper cylinder 11 and the lower cylinder 12, and the movable cavity 13 can supply the piston 20, the swing arm 30 and the output shaft 40 to move inside. Specifically, the movable chamber 13 of the lower cylinder 12 may be configured in a hollow cylindrical shape to facilitate the movement of the chassis 21 therein. Two limit blocks 111 are arranged in the movable cavity 13 of the upper cylinder body 11, shaft holes communicated to the outside of the upper cylinder body 11 are formed in the two limit blocks 111 and used for installing the output shaft 40, and meanwhile, a space formed between the two limit blocks 111 is suitable for the swing arm 30 to move. Here, only enough space for the swing arm 30 to move is left between the two limit blocks 111, so as to reduce the volume of the internal moving cavity 13 and reduce the air volume required for driving the piston 20.

Referring to fig. 4 and 5, the piston 20 includes a bottom plate 21 and a semi-cylinder 22, the bottom plate 21 is fitted into the movable chamber 13 in the lower cylinder 12, the semi-cylinder 22 is provided with a longitudinal groove 221 and a transverse groove 222, and one end of the swing arm 30 connected to the piston 20 is provided with a pressure rod 31, wherein the swing arm 30 is adapted to move in the longitudinal groove 221, and the pressure rod 31 is arranged in the transverse groove 222 and adapted to move in the transverse groove 222. Here, the longitudinal groove 221 is provided in the axial direction and on the side plane of the semi-cylinder 22, the lateral groove 222 is also provided on the side plane of the semi-cylinder 22, and is connected with the longitudinal groove 221 to form a cross shape, and the depth of the longitudinal groove 221 is the same as that of the lateral groove 222. The pressure bar 31 is fixed on the swing arm 30, and may be integrally formed or fixedly connected by a fixing member, the pressure bar 31 is configured in a cylindrical shape and adapted to slide and rotate in the transverse groove 222, and the swing arm 30 may rotate in the longitudinal groove 221 during operation. In order to improve airtightness and prevent air leakage, a piston packing 23 is provided between the bottom plate 21 and the lower cylinder 12. In the invention, the upper part of the piston 20 is set to be semi-cylindrical, so that the space of the other semi-cylindrical part can be used for the movement of the swing arm 30, the swing arm 30 and the semi-cylinder 22 can be accommodated in the movable cavity 13 side by side, the space utilization rate is improved, meanwhile, the space required by the inner movable cavity 13 can be smaller, the use of gas can be reduced when the piston 20 works, and the gas utilization rate is further improved.

The output shaft 40 is disposed on the upper cylinder 11, at least one mounting hole 112 is disposed on the upper cylinder 11 for mounting the output shaft 40, and the output shaft 40 is exposed out of the mounting hole 112. Specifically, two mounting holes 112 are provided, with the output shaft 40 exposing one of the mounting holes 112. The middle part of the output shaft 40 and the swing arm 30 are fixedly connected through a set screw 60, so that the output shaft 40 is conveniently installed firstly and then the swing arm 30 is installed, and the device can be smoothly assembled in a narrow space. Here, it may be arranged that only one end of the output shaft 40 is exposed and the other end is sealed in the surface of the upper cylinder 11 by the sleeve 50, and when the swing arm 30 swings, the output shaft 40 follows the swing arm 30 to rotate on the upper cylinder 11.

In this embodiment, the operating principle of the rotary cylinder is as follows: when the piston 20 is at the lowest position, the pressure rod 31 is located at the position of the transverse groove 222 closest to the side plane of the semi-cylinder 22, when the piston 20 ascends, the pressure rod 31 is driven to ascend together, the pressure rod 31 drives the swing arm 30 to rotate around the position of the output shaft 40, because the output shaft 40 is fixed on the upper cylinder 11 and can rotate in the upper cylinder 11, the end of the swing arm 30 connected with the output shaft 40 does not displace, the other end of the swing arm 30, namely the end connected with the pressure rod 31 rotates around the axial direction of the output shaft 40, during the rotation process, the pressure rod 31 continuously slides in the transverse groove 222 along the direction far away from the side plane of the semi-cylinder 22, so that the swing arm 30 can smoothly swing, and during the swing process, the swing arm 30 drives the output shaft 40 to rotate. When the piston 20 moves downward, the swing arm 30 and the pressure rod 31 rotate in the opposite direction to that when the piston 20 ascends, and the output shaft 40 also rotates in the opposite direction. In the scheme, the rotation of the output shaft 40 is driven by the up-and-down motion of the piston 20, and the swing arm 30 can swing in the movable cavity 13 by a large amplitude, so that the angle of each rotation of the output shaft 40 is also large. And a rotating shaft sealing ring is arranged between the output shaft 40 and the upper cylinder body 11, so that gas is prevented from leaking from the output shaft 40. When the piston 20 is located at the lowest position, the clearance between the bottom surface of the lower cylinder 12 and the chassis 21 is small, so that the piston 20 can be rapidly driven to move upward.

With continued reference to fig. 3 and 7, in the present embodiment, the air holes 14 of the upper cylinder 11 and the lower cylinder 12 are each provided with an external screw joint 70 for connecting an external high-pressure air tank. Since the rotary cylinder can be used in the field of precision analysis instruments, replaceable gas tanks are generally used in the field of analysis instruments, and the capacity of the gas tank is limited. Here, the air tanks are respectively connected to the external screw joints 70 of the upper cylinder 11 and the lower cylinder 12 and controlled by electromagnetic valves, and when the lower cylinder 12 is charged, the upper cylinder 11 is switched to be discharged, whereas when the upper cylinder 11 is charged, the air holes 14 of the lower cylinder 12 are used for discharging. In order to further improve the sealing property and prevent gas leakage, joint seal rings 71 are provided between the outer joint 70 and the upper and

lower cylinders

11 and 12. Further, the air hole 14 located in the lower cylinder 12 is disposed below the semi-cylinder 22, so that when the lower cylinder 12 is filled with air, the air hole directly acts on the semi-cylinder 22, and the movement stability of the piston 20 can be improved. In the upper cylinder 11, the air hole 14 is directly arranged at the middle part of the top of the upper cylinder 11; two positioning pins 80 are also provided in the side of the upper cylinder 11 near the output shaft 40.

With reference to fig. 6, in a preferred embodiment, two stabilizing pins 90 are symmetrically disposed on the arc side of the semi-cylinder 22, the stabilizing pins 90 are exposed at two sides of the semi-cylinder 22 and respectively contact with the limiting block 111 in the movable cavity 13 and the inner wall of the movable cavity 13, so that the two sides of the semi-cylinder 22 in the upper cylinder 11 can be limited by the stabilizing pins 90, the semi-cylinder 22 is prevented from tilting due to the uneven thrust transmitted from the chassis 21, and the stress concentration at the connection between the semi-cylinder 22 and the chassis 21 can be reduced.

In another preferred embodiment, the upper cylinder 11 and the lower cylinder 12 are connected by a bolt 100, and a cylinder gasket 16 is disposed at the connection between the upper cylinder 11 and the lower cylinder 12, so that the sealing performance between the upper cylinder 11 and the lower cylinder 12 can be improved by the cylinder gasket 16, and air leakage can be further prevented.

The utility model discloses in, through the transmission mode who sets up piston 20 formula, convert the up-and-down motion of piston 20 into swing arm 30 motion to drive the pivot and rotate, utilize lever principle to convert the atmospheric pressure conversion to output shaft 40's rotation, its work efficiency is high, just can produce sufficient output shaft 40 moment of torsion under less atmospheric pressure. On the other hand, the tightness in the movable cavity 13 is good, the cavity volume of the movable cavity 13 is small, and when the piston 20 is used, only a small amount of gas is needed to push the piston to do work, which is beneficial to saving gas sources in use.

It should be understood that: above only the utility model discloses an it is preferred embodiment, the utility model discloses a scope of protection not only limits in above-mentioned embodiment, and the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection.

The above description of the drawings used in the embodiments is only to illustrate some embodiments of the invention and should not be taken as limiting the scope, from which other relevant drawings can be derived by a person skilled in the art without inventive effort.

Claims

1. The utility model provides a rotary cylinder of vertical output, includes cylinder body and lower cylinder body, its characterized in that still includes: a piston, a swing arm and an output shaft; wherein, the first and the second end of the pipe are connected with each other,

movable cavities suitable for the piston to move are formed in the upper cylinder body and the lower cylinder body, and air holes communicated to the movable cavities are formed in the top of the upper cylinder body and the bottom of the lower cylinder body; the upper cylinder body is provided with at least one through mounting hole which is suitable for mounting the output shaft and exposing the output end of the output shaft;

the piston is arranged in the movable cavity and is suitable for moving up and down in the movable cavity;

the output shaft is vertically connected to one end of the swing arm and can rotate on the upper cylinder body;

the other end of the swing arm is movably arranged on the piston and is configured to drive the output shaft to rotate when the piston moves up and down.

2. A vertical output rotary cylinder according to claim 1, wherein the piston comprises a base plate and a semi-cylinder, the base plate is adapted to the movable chamber, the semi-cylinder is provided with a longitudinal groove and a transverse groove, and one end of the swing arm connected to the piston is provided with a pressure rod, wherein the swing arm is adapted to move in the longitudinal groove, and the pressure rod is arranged in the transverse groove and adapted to move in the transverse groove.

3. A vertical output rotary cylinder according to claim 2, wherein a piston seal is provided between the base plate and the lower cylinder block.

4. The vertical output rotary cylinder according to claim 2, wherein two limit blocks are arranged in the movable cavity in the upper cylinder body, and a gap for mounting the swing arm is formed between the limit blocks.

5. The vertical output rotary cylinder according to claim 4, wherein two stabilizing pins are symmetrically arranged on the arc side surface of the semi-cylinder, and the stabilizing pins are exposed out of two sides of the semi-cylinder and are respectively contacted with the side surface of the limit block and the inner wall of the movable cavity.

6. The vertical output rotary cylinder according to claim 1, wherein the middle part of the output shaft is fixedly connected with the swing arm through a set screw.

7. The vertical output rotary cylinder according to claim 1, wherein an outer screw joint is provided on the air hole, and a joint sealing ring is provided between the outer screw joint and the upper cylinder body or the lower cylinder body.

8. The vertical output rotary cylinder of claim 2, wherein the outer wire joint of the lower cylinder is disposed below the semi-cylinder.

9. The vertical output rotary cylinder according to claim 1, wherein the upper cylinder body is connected with the lower cylinder body through a bolt, and a cylinder body sealing ring is arranged at the joint of the upper cylinder body and the lower cylinder body.

10. A vertical output rotary cylinder according to claim 1, wherein a shaft seal is provided between the output shaft and the upper cylinder block.