CN217234582U - High-thrust pneumatic film actuating mechanism - Google Patents

Abstract

The utility model discloses a high thrust pneumatic film actuating mechanism belongs to pneumatic film actuating mechanism technical field, last membrane lid and lower membrane lid including mutual adaptation, the center of membrane lid bottom is connected with the support down, the center between last membrane lid and the lower membrane lid is equipped with the push rod that runs through membrane lid and support down, and is connected with the diaphragm between last membrane lid and the lower membrane lid, a plurality of compression spring are established to the top of diaphragm, and are provided with the stretch-drop board between a plurality of compression spring's the top, the top of stretch-drop board is equipped with the fixed plate of being connected with last membrane lid, and both sides on the fixed plate all are equipped with mutual thread bush and establish adjusting screw and two thread bushes of connection. This pneumatic film actuating mechanism of high thrust through the removal that stretches and falls the board, can produce deformation to compression spring, further can carry out the regulation of certain degree to the size of thrust, has improved the suitability.

Description

High-thrust pneumatic film actuating mechanism

Technical Field

The utility model belongs to the technical field of pneumatic film actuating mechanism, concretely relates to high thrust pneumatic film actuating mechanism.

Background

The pneumatic diaphragm type actuating mechanism is characterized in that an elastic diaphragm is used for converting input air pressure into pushing force for a push rod, and a valve core is correspondingly displaced through the push rod to change the opening degree of a valve. The pneumatic piston type actuator outputs thrust by a piston in a cylinder, and can obtain larger thrust due to higher allowable pressure of the cylinder, and can be easily manufactured into a long-stroke actuator. A typical pneumatic diaphragm actuator consists essentially of an elastic diaphragm, a compression spring and a push rod.

The stroke range and the thrust of the pneumatic membrane type actuating mechanism are determined by the internal spring, and if the pneumatic membrane type actuating mechanism needs to be changed, the spring needs to be redesigned, so that the applicability is low.

Therefore, in order to meet the current situation, the design and production of a high-thrust pneumatic membrane actuating mechanism are urgently needed to meet the requirement of practical use.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a high thrust pneumatic membrane actuating mechanism to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: pneumatic film actuating mechanism of high thrust, including the last membrane lid and the lower membrane lid of mutual adaptation, the center of membrane lid bottom is connected with the support down, go up the membrane lid and be equipped with the push rod that runs through membrane lid and support down with the center between the membrane lid down, and go up and be connected with the diaphragm between membrane lid and the lower membrane lid, a plurality of compression spring are established to the top of diaphragm, and are provided with the stretch-drop board between a plurality of compression spring's the top, the top of stretch-drop board is equipped with the fixed plate of being connected with last membrane lid, and both sides on the fixed plate all are equipped with mutual thread bush and establish adjusting screw and two thread bush of connection.

Preferably, two adjusting cavities are formed in the bottom of the fixing plate and are matched with the threaded sleeves.

Preferably, opposite threads are arranged at two ends of the periphery of the adjusting screw, the two thread sleeves are respectively arranged at corresponding positions at two ends of the adjusting screw, and a traction rod is arranged between the top of each thread sleeve and the corresponding lifting plate.

Preferably, one end of the adjusting screw rod is rotatably connected with one side of the inner periphery of the adjusting cavity through a bearing, and the other end of the adjusting screw rod penetrates through the fixing plate and the upper membrane cover and is connected with an adjusting motor.

Preferably, the edge of the bottom of the lower membrane cover is connected with a connecting ring, the top of the connecting ring is connected with a protective shell, and clamping seats are arranged on two sides of the periphery of the connecting ring.

Preferably, the inner periphery of the clamping seat is provided with a cavity, and the center of the cavity is provided with a clamping pin.

Preferably, recesses are formed in two sides of the top edge of the connecting ring, and a hollow convex plate connected with the bottom of the protective shell is arranged on the inner periphery of each recess.

The utility model discloses a technological effect and advantage:

the two ends of the periphery of the adjusting screw are provided with threads in opposite directions, and the two thread sleeves are respectively arranged at corresponding positions of the two ends of the adjusting screw, so that the thread sleeves can synchronously move close to or away from each other, the displacement changes of the traction rods are the same, and the extension and lowering plate can further move up and down stably;

the contact height of the extension and lowering plate and the tops of the compression springs is changed by changing the displacement of the extension and lowering plate, so that the elastic restoring force of the compression springs is changed, and the function of adjusting the thrust can be further realized;

the clamping pin is pulled to enable the clamping pin to be clamped and separated with the inner periphery of the hollow convex plate, the fixed disassembly of the protective shell can be controlled, and the trouble that the connecting pieces need to be disassembled one by one in sequence during maintenance is avoided.

This pneumatic film actuating mechanism of high thrust through the removal that stretches and falls the board, can produce deformation to compression spring, further can carry out the regulation of certain degree to the size of thrust, has improved the suitability.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a front view of the present invention with the connection ring and the protective shell removed;

fig. 3 is a cross-sectional exploded view of the present invention with the attachment ring removed and the protective shell removed;

fig. 4 is a schematic view of the connection structure of the fixing plate of the present invention;

fig. 5 is a cross-sectional view of the hollow convex plate of the present invention;

fig. 6 is an enlarged view of the structure at a in fig. 4 according to the present invention.

Description of the reference numerals:

1. covering with a film; 2. a lower film cover; 3. a support; 4. a push rod; 5. a membrane; 6. a compression spring; 7. a lifting plate; 8. a fixing plate; 9. a pulling rod; 10. a connecting ring; 11. a protective shell; 12. a card holder; 13. a hollow convex plate; 14. a tray; 15. a limiting disc; 16. a gasket; 17. a conversion sleeve; 18. a round nut; 19. a round nut stop washer; 20. a connecting plate;

21. adjusting the screw rod; 22. a threaded sleeve; 23. adjusting the motor;

31. clamping and fixing pins; 32. a stationary ring plate; 33. fixing the spring;

51. an adjustment chamber; 52. a cavity.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

As shown in fig. 2 and 3, the upper film cover 1 and the lower film cover 2 are mutually matched and connected through a bolt, and the center of the bottom of the lower film cover 2 is connected with a bracket 3;

a push rod 4 penetrating through the lower membrane cover 2 and the support 3 is arranged in the center between the upper membrane cover 1 and the lower membrane cover 2, through holes convenient for the push rod 4 to penetrate are formed in the centers of the top and the bottom of the support 3, a lubricating bearing is arranged on the inner periphery of the through hole in the top of the support 3, and a sealing gasket 16 for strengthening sealing is arranged between the joint of the support 3 and the lower membrane cover 2;

a diaphragm 5 is connected between the upper diaphragm cover 1 and the lower diaphragm cover 2, a tray 14 and a limiting disc 15 are sequentially arranged in the center between the diaphragm 5 and the push rod 4 from top to bottom, and a stop block is integrally formed on the periphery of the push rod 4;

the centers of the diaphragm 5, the tray 14 and the limiting disc 15 are all provided with central holes;

a conversion sleeve 17 is arranged at the central part of the diaphragm 5, a round nut 18 and a round nut stop gasket 19 which are used for fixing and limiting the top end of the push rod 4 are arranged above the conversion sleeve 17, and a plurality of compression springs 6 are arranged above the diaphragm 5;

the above is the overall structure of the pneumatic membrane actuator, and there are some structures, which are not shown or described since the pneumatic membrane actuator is a prior art device.

The following are different from the prior art, among them;

in order to change the magnitude of the thrust and improve the applicability, as shown in fig. 2, 4 and 6, a lifting plate 7 is arranged between the tops of a plurality of compression springs 6, a fixing plate 8 is arranged above the lifting plate 7, and the fixing plate 8 is fixedly connected with the inner periphery of the upper membrane cover 1;

two adjusting cavities 51 are formed in the bottom of the fixing plate 8, adjusting screws 21 and two threaded sleeves 22 which are in threaded sleeve connection with each other are arranged on the inner peripheries of the adjusting cavities 51, and the adjusting cavities 51 are matched with the threaded sleeves 22;

the adjusting motor 23 can be a RF25 type positive and negative rotation motor;

an adjusting motor 23 is arranged on one side of the upper membrane cover 1, the output end of the adjusting motor 23 penetrates through the fixing plate 8 and the upper membrane cover 1 and is connected with one end of an adjusting screw 21, and one end of the adjusting screw 21, which is far away from the adjusting motor 23, is rotatably connected with the inner periphery of the adjusting cavity 51;

opposite-direction threads are arranged at two ends of the periphery of the adjusting screw rod 21, the two thread sleeves 22 are respectively positioned at corresponding positions at two ends of the adjusting screw rod 21, and the traction rods 9 are arranged between the tops of the two thread sleeves 22 and the lifting plate 7;

both ends of the traction rod 9 are provided with cambered surfaces convenient to rotate, the centers of both ends of the traction rod 9 are provided with hinge holes, both sides of the center of the top of the extension and lowering plate 7 and the bottoms of the two thread sleeves 22 are connected with two connecting plates 20 with connecting holes, and both ends of the extension and lowering plate 7 are respectively rotatably connected with the two corresponding connecting plates 20;

in order to protect the device and facilitate the assembly and disassembly, as shown in fig. 1 and 5, the edge of the bottom of the lower membrane cover 2 is connected with a connecting ring 10, the top of the connecting ring 10 is connected with a protective shell 11, and two sides of the periphery of the connecting ring 10 are provided with clamping seats 12;

two sides of the top edge of the connecting ring 10 are provided with recesses, and the inner periphery of the recesses is provided with a hollow convex plate 13 connected with the bottom of the protective shell 11;

a cavity 52 is formed in the inner periphery of the card holder 12, a card fixing pin 31 is arranged in the center of the cavity 52, and one end of the card fixing pin 31 is matched with the inner periphery of the hollow convex plate 13;

the end of the fastening pin 31 located at the inner periphery of the cavity 52 is connected with a fixed ring plate 32, and a fixed spring 33 is arranged between the fixed ring plate 32 and the inner periphery of the cavity 52.

The installation, connection and connection modes can be selected from the modes of fastening pieces, bonding or welding and the like according to requirements.

Working principle;

when the high-thrust pneumatic membrane actuating mechanism needs to be used, the high-thrust pneumatic membrane actuating mechanism is firstly connected with external equipment, and then the adjusting motor 23 is started according to requirements to drive the adjusting screw 21 to rotate, so that the thread sleeves 22 move close to or away from each other, and the traction rod 9 is displaced;

when the pulling rod 9 moves, the extension and drop plate 7 is driven to stably move to a required height, the plurality of compression springs 6 are compressed to a required interval length, attributes such as restoring force of the compression springs 6 are further changed, and a required pushing force can be adjusted;

after the adjustment is finished, the device can be used, and in the using process, the protective shell 11 can protect the device body to a certain extent;

when the maintenance is needed, the clamping and fixing pin 31 is pulled to separate the clamping and fixing pin 31 from the hollow convex plate 13, so that the protective shell 11 can be detached, and the maintenance is further facilitated.

Finally, it should be noted that: the above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not intended to limit the present invention.

Claims (7)

1. Pneumatic film actuating mechanism of high thrust, including last membrane lid (1) and lower membrane lid (2) of mutual adaptation, the center of membrane lid (2) bottom is connected with support (3), its characterized in that down: go up membrane lid (1) and the center between membrane lid (2) down and be equipped with push rod (4) that run through membrane lid (2) and support (3) down, and go up membrane lid (1) and be connected with diaphragm (5) down between membrane lid (2), a plurality of compression spring (6) are established to the top of diaphragm (5), and are provided with between the top of a plurality of compression spring (6) and stretch down board (7), the top of stretching down board (7) is equipped with fixed plate (8) of being connected with last membrane lid (1), and both sides on fixed plate (8) all are equipped with adjusting screw (21) and two thread bush (22) that mutual thread bush established the connection.

2. The high thrust pneumatic diaphragm actuator of claim 1, wherein: two adjusting cavities (51) are formed in the bottom of the fixing plate (8), and the adjusting cavities (51) are matched with the threaded sleeves (22).

3. The high thrust pneumatic diaphragm actuator of claim 2, wherein: the two ends of the periphery of the adjusting screw rod (21) are provided with threads in opposite directions, the two thread sleeves (22) are respectively positioned at the corresponding positions of the two ends of the adjusting screw rod (21), and a traction rod (9) is arranged between the top of each thread sleeve (22) and the corresponding lifting plate (7).

4. The high thrust pneumatic membrane actuator of claim 3, wherein: one end of the adjusting screw rod (21) is rotatably connected with one side of the inner periphery of the adjusting cavity (51) through a bearing, and the other end of the adjusting screw rod (21) penetrates through the fixing plate (8) and the upper film cover (1) and is connected with an adjusting motor (23).

5. The high thrust pneumatic diaphragm actuator of claim 1, wherein: the edge of lower membrane lid (2) bottom is connected with go-between (10), and the top of go-between (10) links up has protected shell (11), cassette (12) are all installed to the both sides of go-between (10) periphery.

6. The high thrust pneumatic diaphragm actuator of claim 5, wherein: a cavity (52) is formed in the inner periphery of the clamping seat (12), and a clamping pin (31) is arranged in the center of the cavity (52).

7. The high thrust pneumatic diaphragm actuator of claim 6, wherein: two sides of the top edge of the connecting ring (10) are provided with recesses, and the inner periphery of each recess is provided with a hollow convex plate (13) connected with the bottom of the protective shell (11).

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