CN115823330A - Pneumatic actuator with rapid exhaust buffer structure - Google Patents
Pneumatic actuator with rapid exhaust buffer structure Download PDFInfo
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- CN115823330A CN115823330A CN202211634465.3A CN202211634465A CN115823330A CN 115823330 A CN115823330 A CN 115823330A CN 202211634465 A CN202211634465 A CN 202211634465A CN 115823330 A CN115823330 A CN 115823330A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
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Abstract
The invention discloses a pneumatic actuating mechanism with a rapid exhaust buffer structure, which comprises a box body; a shifting fork is rotatably connected in the box body through a beam; through the spring cylinder, and be connected the piston rod with the spring lever through the slider, can be when air supply port A, air supply port B admits air simultaneously, realize the spring body compression process by spring lever drive, make the spring body hold power, at air supply port A, when air supply port B loses gas, utilize the elastic potential energy of spring body, make the spring lever reset fast, and reset through slider drive piston rod, the clockwise motion and the counter-clockwise motion of shift fork are corresponding respectively to air admission and gas loss process, namely the closure of pneumatic actuator, simultaneously at cooperation buffering plunger, can be after it inserts the cylinder cap, close air supply port A, only remain air supply port B and lose gas, make exhaust speed slow down, thereby reach the effect of stroke end buffering, avoid the condition emergence of actuator damage that great impact caused, be favorable to protecting valve and actuator.
Description
Technical Field
The invention relates to the technical field of actuating mechanisms, in particular to a pneumatic actuating mechanism with a rapid exhaust buffer structure.
Background
The pneumatic actuating mechanism is a classification of actuating mechanisms, the driving energy of the pneumatic actuating mechanism is airflow, namely when the airflow is input, a piston in the actuating mechanism can be pushed to move in the closed cylinder body, so that a valve rod is driven to move, and opening and closing actions are further completed.
Pneumatic actuator is widely used because it possesses accurate control effect, and to the pneumatic actuator of great specification, because the volume and the weight of itself are very big, consequently when the fast action, very big and then easily cause destruction to the impact at stroke end, including causing destruction to actuator itself and valve.
In the prior art, in order to solve the problem that the actuator and the valve are damaged due to large stroke end impact in the prior art, a buffer mechanism needs to be added, the pneumatic actuator mainly focuses on the actuator below the cylinder diameter 400, and mostly focuses on a straight stroke, and the buffer mechanism of an angular stroke actuator cannot be applied.
Therefore, a pneumatic actuator with a quick exhaust buffer structure is provided to solve the above problems.
Disclosure of Invention
In order to make up for the defects of the prior art and solve at least one problem, the pneumatic actuator with the rapid exhaust buffer structure is provided.
The technical scheme adopted by the invention for solving the technical problems is as follows: the invention relates to a pneumatic actuating mechanism with a rapid exhaust buffer structure, which comprises a box body; a shifting fork is rotatably connected in the box body through a beam; the openings at the two sides of the bottom of the box body are respectively fixedly connected with a spring cylinder and a piston cylinder;
a spring seat is connected to one end of the spring cylinder close to the box body in a sliding manner; a spring rod is fixedly connected to the middle of the spring seat; the other end in the spring cylinder is fixedly connected with a spring body, and the spring body is fixedly connected between the spring cylinder and the spring seat; one end of the spring rod extends into the box body;
a piston is arranged in the piston cylinder, and the middle part of the piston is fixedly connected with a piston rod; one end of the piston rod extends into the box body; a cylinder cover is fixedly connected to one end, far away from the box body, of the piston cylinder, and an air source port connecting block is fixedly connected to the middle of the outer side of the cylinder cover; the middle part of the cylinder cover is provided with an opening, and the bottom of the cylinder cover is provided with an air source port B; the gas source port connecting block is provided with a gas source port A along the central axis, and the gas source port A is communicated with the inner cavity of the cylinder body through the middle opening of the cylinder cover;
one ends of the piston rod and the spring rod, which are positioned in the box body, are respectively hinged to two ends of the sliding block, and the middle part of the sliding block is rotatably connected with a transmission pin; the transmission pin slides in a groove in the middle of the shifting fork.
Preferably, one end of the spring cylinder is fixedly connected with a bottom cover through a first bolt, and the bottom cover is far away from the box body; one end of the spring body is fixedly connected to the inner side of the bottom cover; the other end of the spring cylinder is fixedly connected with a first connecting cover through a second adjusting bolt; the opposite surfaces of the bottom cover and the spring seat are fixedly connected with guide pins, and two ends of the spring body are respectively clamped on the guide pins on two sides; and an opening at one side of the box body is fixedly connected with the outer side of the connecting cover.
Preferably, a plurality of guide pins are arranged on the side wall of the spring seat, and the guide pins slide on the inner side of the spring cylinder.
Preferably, the piston cylinder comprises a cylinder body, and one end of the cylinder body is fixedly connected with a second connecting cover; the cylinder cover is fixedly connected to the other end of the cylinder body; a pull rod is fixedly connected between the second connecting cover and the cylinder cover; two ends of the pull rod penetrate through the second connecting cover and the cylinder cover respectively and are fixedly connected through nuts; one end of the piston rod, which is positioned in the cylinder body, is fixedly connected with a buffer plunger; the buffer plunger is positioned on one side of the piston close to the cylinder cover; the buffer plunger penetrates through the cylinder cover and is matched with the inner cavity of the gas source port connecting block; and an opening at the other side of the box body is fixedly connected with the outer side of the second connecting cover.
Preferably, a guide rod along the axial direction of the spring rod and the piston rod is fixedly connected in the box body, and the sliding block is connected to the guide rod in a sliding manner;
the top of the box body is provided with two adjusting bolts I which are symmetrically arranged; and the first adjusting bolt is positioned in the swing range of the shifting fork and is used for adjusting the swing range of the shifting fork.
Preferably, the outer side wall of the spring cylinder is fixedly connected with a first lifting lug, and the top end of the outer wall of the connecting cover is fixedly connected with a second lifting lug.
Preferably, an oilless bearing is arranged between the sliding block and the transmission pin, and the transmission pin penetrates through the oilless bearing; the sliding block and the spring rod are fixed through the set screw, and the piston rod and the sliding block are correspondingly fixed through the set screw.
Preferably, two pin shaft cover plates are fixedly connected to the outer side surface of the shifting fork, and the two pin shaft cover plates are arranged corresponding to the two sides of the shifting fork; the pin shaft cover plate is fixedly connected to the outer side of the shifting fork through a screw; the two ends of the transmission pin are limited between the two sides of the shifting fork.
The invention has the beneficial effects that:
the invention provides a pneumatic actuator with a rapid exhaust buffer structure, which is characterized in that a spring cylinder is additionally arranged at the opposite position of a piston cylinder, a piston rod is connected with a spring rod through a sliding block, so that the compression process of a spring body driven by the spring rod can be realized when an air source port A and an air source port B simultaneously admit air, the spring body stores force, when the air source port A and the air source port B lose air, the spring rod is rapidly reset by utilizing the elastic potential energy of the spring body and drives the piston rod to reset through the sliding block, the air admission process and the air loss process respectively correspond to the clockwise motion and the anticlockwise motion of a shifting fork, namely the closing of the pneumatic actuator, and simultaneously, after the pneumatic actuator is inserted into a cylinder cover, the air source port A is closed, only the air source port B is reserved for air loss, the exhaust speed is slowed down, so that the buffer effect at the tail end of a stroke is achieved, the damage of the actuator caused by large impact is avoided, and the valve and the actuator are protected.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:
FIG. 1 is a front view of a pneumatic actuator in accordance with an embodiment of the present invention;
FIG. 2 is a top view of section M-M of FIG. 1;
FIG. 3 is a partial schematic view of a P-P section of the box along the center of the fork;
FIG. 4 is a right side view of a pneumatic actuator in accordance with an embodiment of the present invention;
FIG. 5 is a cross-sectional view of a gas supply port connection block in one embodiment of the invention;
FIG. 6 is a cross-sectional view of a cylinder head according to an embodiment of the present invention;
illustration of the drawings:
1. a bottom cover; 2. a guide pin; 3. a spring case; 4. a spring body; 6. a first connecting cover; 7. an oilless bearing; 8. adjusting a first bolt; 10. a box body; 11. a shifting fork; 12. a second connecting cover; 15. a cylinder body; 16. a piston; 18. a cylinder cover; 18-1 and a gas source port B; 19. a nut; 20. a pull rod; 22. a gas source port connecting block; 22-1 and an air source port A; 23. a buffer plunger; 28. a piston rod; 30. a guide bar; 31. a drive pin; 32. a slider; 33. a spring lever; 34. a guide pin; 35. a spring seat; 36. a first bolt; 40. a first lifting lug; 42. adjusting a second bolt; 45. a second lifting lug; 47. a screw; 48. and (5) tightening the screws.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Specific examples are given below.
Referring to fig. 1-6, a pneumatic actuator with a fast exhaust buffer structure includes a housing 10; a shifting fork is rotatably connected to the inner warp beam of the box body 10; the two openings at the bottom of the box body 10 are respectively fixedly connected with a spring cylinder 3 and a piston cylinder;
a spring seat 35 is connected to one end of the spring barrel 3 close to the box body 10 in a sliding manner; the middle part of the spring seat 35 is fixedly connected with a spring rod 33; the other end in the spring cylinder 3 is fixedly connected with a spring body 4, and the spring body 4 is fixedly connected between the spring cylinder 3 and a spring seat 35; one end of the spring rod 33 extends to the interior of the box body 10;
a piston 16 is arranged in the piston cylinder, and a piston rod 28 is fixedly connected to the middle of the piston 16; one end of the piston rod 28 extends into the box body 10; a cylinder cover 18 is fixedly connected to one end, far away from the box body 10, of the piston cylinder, and an air source port connecting block 22 is fixedly connected to the middle of the outer side of the cylinder cover 18; the middle part of the cylinder cover 18 is opened, and the bottom of the cylinder cover 18 is provided with an air source port B18-1; the gas source port connecting block 22 is provided with a gas source port A22-1 along the central axis, and the gas source port A22-1 is communicated with the inner cavity of the cylinder body 15 through the middle opening of the cylinder cover 18;
one end of the piston rod 28 and one end of the spring rod 33, which are positioned in the box body 10, are respectively hinged to two ends of the sliding block 32, and the middle part of the sliding block 32 is rotatably connected with a transmission pin 31; the driving pin 31 slides in a groove in the middle of the shift fork 11.
Specifically, in order to solve the problem in the prior art that the actuator and the valve are damaged due to large stroke end impact, a buffer mechanism needs to be added, and the pneumatic actuator mainly focuses on actuators with a cylinder diameter below 400, mostly focuses on a straight stroke, and is not applicable to a buffer mechanism of an angular stroke actuator, in other words, the prior art does not have a buffer mechanism for the angular stroke actuator, so that the angular stroke actuator still has a possibility of being damaged due to large impact during rapid operation; when the device is used, firstly, the pneumatic actuating mechanism is fixedly installed on a valve, as shown in fig. 2, then when air is supplied to an air supply port A22-1 and an air supply port B18-1 simultaneously, air supply pressure enters a piston cylinder and pushes a piston 16 in the piston cylinder to move leftwards, at the moment, through the connection between the piston 16 and a piston rod 28, the piston rod 28 and the slider 32 can be used for being connected, the slider 32 and a transmission pin 31 are driven to drive a shifting fork 11 to rotate clockwise, so that the pneumatic actuating mechanism moves towards a closing direction, and meanwhile, as the other end of the slider 32 is connected with a spring rod 33, when the slider 32 displaces, the spring rod 33 is synchronously driven to displace leftwards, and when the spring rod 33 displaces leftwards, the spring body 4 is extruded through a spring seat 35, so that elastic potential energy is generated;
when the air source port A22-1 and the air source port B18-1 are out of air, the elastic potential energy of the spring body 4 is greater than the air source pressure in the piston cylinder, at this time, the spring seat 35 is pushed to move towards the right by the elastic potential energy of the spring body 4, under the combined action of the spring rod 33, the slider 32 and the transmission pin 31, the shifting fork 11 rotates anticlockwise at this time, and further the pneumatic actuating mechanism moves towards the opening direction, until the buffer plunger 23 on one side of the piston 16 penetrates through the port in the middle of the cylinder cover 18, the air source port A22-1 is blocked, at this time, the compressed air in the piston cylinder is simultaneously exhausted from the air source port A22-1 and the air source port B18-1 and is only exhausted through the air source port B18-1, so that the exhaust speed is reduced, and then the movement speed of the shifting fork 11 is reversely acted, namely, the rotation speed of the shifting fork 11 is reduced, and the buffering effect is achieved, namely, and the buffering effect of the stroke end is achieved by the resetting of the spring body 4.
As an embodiment of the invention, one end of the spring cylinder 3 is fixedly connected with a bottom cover 1 through a first bolt 36, and the bottom cover 1 is far away from the box body 10; one end of the spring body 4 is fixedly connected to the inner side of the bottom cover 1; the other end of the spring cylinder 3 is fixedly connected with a first connecting cover 6 through a second adjusting bolt 42; the opposite surfaces of the bottom cover 1 and the spring seat 35 are fixedly connected with guide pins 2, and two ends of the spring body 4 are respectively clamped on the guide pins 2 on two sides; an opening at one side of the box body 10 is fixedly connected to the outer side of the first connecting cover 6.
Specifically, the bottom cover 1 is fixedly connected to the spring cylinder 3 through a first bolt 36, a cover plate is arranged between the first bolt 36 and the bottom cover 1, a sealing ring is arranged between the cover plate and the bottom cover 1 to play a sealing role, and the guide pins 2 positioned on the bottom cover 1 and the spring seat 35 can be both in a cylindrical shape or in a cylindrical reinforcement form and are used for guiding the spring body 4; the second adjusting bolt 42 is arranged at the bottom of the spring barrel 3, so that when the spring body 4 is reset rapidly, the second adjusting bolt 42 can limit the spring seat 35, and the pneumatic actuating mechanism is prevented from being damaged due to large impact.
In one embodiment of the present invention, a plurality of guide pins 34 are disposed on a side wall of the spring seat 35, and the guide pins 34 slide inside the spring barrel 3.
Specifically, the guide pin 34 disposed on the side wall of the spring seat 35 can avoid the problem of jamming caused by direct contact between the spring seat 35 and the spring barrel 3 when the spring seat 35 moves in the spring barrel 3, wherein the guide pin 34 can be replaced by a ball, and the ball is connected to the spring seat 35 in a fastening manner, so that the spring seat 35 can slide or roll on the inner wall of the spring barrel 3 when the spring seat 35 moves, and the spring seat 35 is prevented from directly contacting the inner wall of the spring barrel 3.
As an embodiment of the present invention, the piston cylinder includes a cylinder body 15, and one end of the cylinder body 15 is fixedly connected with a second connecting cover 12; the cylinder cover 18 is fixedly connected to the other end of the cylinder body 15; a pull rod 20 is fixedly connected between the second connecting cover 12 and the cylinder cover 18; two ends of the pull rod 20 are respectively connected with the second cover 12 and the cylinder cover 18 in a penetrating way and fixedly connected through a nut 19; one end of the piston rod 28, which is positioned in the cylinder body 15, is fixedly connected with a buffer plunger 23; the buffer plunger 23 is positioned on one side of the piston 16 close to the cylinder cover 18; the buffer plunger 23 penetrates through the cylinder cover 18 and is matched with the inner cavity of the gas source port connecting block 22; the other side opening of the box body 10 is fixedly connected with the outer side of the second connecting cover 12.
Specifically, a piston 16 is arranged in a cylinder 15, a piston rod 28 is fixedly connected to one side of the piston 16 in the device, when an air source port A22-1 and an air source port B18-1 simultaneously admit air, the piston 16 can be pushed to move by means of air source pressure between the cylinder 15 and the piston 16, specifically, as shown in FIG. 1, the piston 16 moves towards the left, the piston rod 28 is driven to push a sliding block 32 to move, a transmission pin 31 is used for driving a shifting fork to rotate clockwise, and a spring rod 33 is used for promoting a spring body 4 to store energy; the buffering plunger 23 arranged on one side of the piston 16 can utilize the energy-storage spring body 4 to extrude the spring seat 35 and drive the spring rod 33, the sliding block 32, the transmission pin 31 and the piston rod 28 to drive the buffering plunger 23 to move towards the right when the air source port A22-1 and the air source port B18-1 are out of gas, at the moment, the shifting fork 11 moves anticlockwise until the buffering plunger 23 penetrates through the cylinder cover 18, the opposite air source port A22-1 is closed, only the air source port B18-1 is left out of gas, at the moment, the exhaust speed is slowed down, namely, the tail end buffering effect on the pneumatic execution mechanism is achieved, wherein the head of the buffering plunger 23 keeps smooth transition and can be made into a spherical shape, an ellipsoidal shape or stepped transition, meanwhile, a certain gap is left between the buffering plunger 23 and a port in the middle of the cylinder cover 18, and collision or friction between the buffering plunger 23 and the cylinder cover 18 is avoided when the piston rod 28 moves.
In one embodiment of the present invention, a guide rod 30 is fixed in the housing 10 along the axial direction of the spring rod 33 and the piston rod 28, and the slider 32 is slidably connected to the guide rod 30;
the top of the box body 10 is provided with two adjusting bolts I8, and the two adjusting bolts I8 are symmetrically arranged; the first adjusting bolt 8 is located in the swing range of the shifting fork and used for adjusting the swing range of the shifting fork 11.
Specifically, the guide rod 30 is arranged in the box body 10, so that when the air supply port A22-1 and the air supply port B18-1 simultaneously supply air, the piston rod 28 is kept to drive the slide block 32 to move forward and smoothly, namely the slide block 32 is limited to slide on the guide rod 30, the movement of the shifting fork 11 can be kept unaffected, and when the air supply port A22-1 and the air supply port B18-1 simultaneously lose air, the slide block 32 can be enabled to move reversely and smoothly on the guide rod 30 under the action of the spring rod 33; the effect that sets up adjusting bolt two 42 is the same with adjusting bolt 8's effect, and the regulation of accessible adjusting bolt two 42 comes when spring body 4 resets fast, restricts the home range that shift fork 11 goes on to play the purpose of buffering.
As an embodiment of the invention, a first lifting lug 40 is fixedly connected to the outer side wall of the spring cylinder 3, and a second lifting lug 45 is fixedly connected to the top end of the outer wall of the second connecting cover 12.
Specifically, the first lifting lug 40 and the second lifting lug 45 which are arranged on the spring cylinder 3 and the second connecting cover 12 are used for mounting the spring cylinder 3 and the second connecting cover 12.
In one embodiment of the present invention, an oilless bearing 7 is disposed between the slider 32 and the transmission pin 31, and the transmission pin 31 penetrates the oilless bearing 7; the slide block 32 and the spring rod 33 are fixed by a set screw 48, and the piston rod 28 and the slide block 32 are correspondingly fixed by the set screw 48.
Specifically, at oilless bearing 7 between slider 32 and drive pin 31, can guarantee that drive pin 31 rolls in slider 32 and the card pause does not appear, simultaneously, set up two oilless bearing 7 can further improve drive pin 31 and slider 32's mutual rotation effect, avoid the card pause, wherein slider 32 and spring beam 33 are fixed through holding screw 48, can prevent the relative rotation between spring beam 33, piston rod 28 and the slider 32.
As an embodiment of the present invention, two pin shaft cover plates are fixedly connected to the outer side surface of the shift fork 11, and the two pin shaft cover plates 46 are arranged corresponding to the two sides of the shift fork 11; the pin shaft cover plate 46 is fixedly connected to the outer side of the shifting fork 11 through a screw 47; the two ends of the driving pin 31 are constrained between the two sides of the fork 11.
Specifically, arrange slider 32 between two blades of shift fork 11, and make driving pin 31 pass slider 32 to with the groove contact in the middle part of shift fork 11, install round pin axle apron 46 between two upper and lower blades of shift fork 11, and round pin axle apron is in the shift fork 11 outside through 46 screw 47 rigid couplings, can utilize the round pin axle apron of two symmetries to guarantee that driving pin 31 can not reciprocate when the motion between two blades.
The working principle is as follows: in order to solve the problem that in the prior art, a buffer mechanism needs to be added to the actuating mechanism and the valve due to the fact that the stroke end impact is large, the pneumatic actuating mechanism mainly focuses on the actuating mechanism below the cylinder diameter 400, mainly adopts a straight stroke, and cannot be applied to the buffer mechanism of the angular stroke actuating mechanism, in other words, the buffer mechanism for the angular stroke actuating mechanism does not exist in the prior art, so that the angular stroke actuating mechanism still has the possibility of being damaged due to the large impact when the angular stroke actuating mechanism rapidly acts; when the device is used, firstly, the pneumatic actuating mechanism is fixedly installed on a valve, as shown in fig. 1, then when air is supplied to an air supply port A22-1 and an air supply port B18-1 simultaneously, air supply pressure enters a piston cylinder and pushes a piston 16 in the piston cylinder to move leftwards, at the moment, through the connection between the piston 16 and a piston rod 28, the piston rod 28 and the slider 32 can be used for being connected, the slider 32 and a transmission pin 31 are driven to drive a shifting fork 11 to rotate clockwise, so that the pneumatic actuating mechanism moves towards a closing direction, and meanwhile, as the other end of the slider 32 is connected with a spring rod 33, when the slider 32 displaces, the spring rod 33 is synchronously driven to displace leftwards, and when the spring rod 33 displaces leftwards, the spring body 4 is extruded through a spring seat 35, so that elastic potential energy is generated;
when the air source port A22-1 and the air source port B18-1 are out of air, the elastic potential energy of the spring body 4 is greater than the air source pressure in the piston cylinder, at this time, the spring seat 35 is pushed to move towards the right by the elastic potential energy of the spring body 4, under the combined action of the spring rod 33, the slider 32 and the transmission pin 31, the shifting fork 11 rotates anticlockwise at this time, and further the pneumatic actuating mechanism moves towards the opening direction, until the buffer plunger 23 on one side of the piston 16 penetrates through the port in the middle of the cylinder cover 18, the air source port A22-1 is blocked, at this time, the compressed air in the piston cylinder is simultaneously exhausted from the air source port A22-1 and the air source port B18-1 and is only exhausted through the air source port B18-1, so that the exhaust speed is reduced, and then the movement speed of the shifting fork 11 is reversely acted, namely, the rotation speed of the shifting fork 11 is reduced, and the buffering effect is achieved, namely, and the buffering effect of the stroke end is achieved by the resetting of the spring body 4.
In the pneumatic actuating mechanism, the sealing property needs to be ensured when the structural parts are installed, and a sealing ring or a sealing gasket is arranged between the connected structural parts, which belongs to the prior art, so the invention document is not described.
In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed.
Claims (8)
1. The utility model provides a take pneumatic actuator of quick exhaust buffer structure which characterized in that: comprises a box body (10); a shifting fork is rotatably connected to the inner warp beam of the box body (10); openings on two sides of the bottom of the box body (10) are fixedly connected with a spring cylinder (3) and a piston cylinder respectively;
a spring seat (35) is connected to one end, close to the box body (10), in the spring barrel (3) in a sliding manner; a spring rod (33) is fixedly connected to the middle part of the spring seat (35); the other end in the spring cylinder (3) is fixedly connected with a spring body (4), and the spring body (4) is fixedly connected between the spring cylinder (3) and a spring seat (35); one end of the spring rod (33) extends into the box body (10);
a piston (16) is arranged in the piston cylinder, and a piston rod (28) is fixedly connected to the middle of the piston (16); one end of the piston rod (28) extends into the box body (10); a cylinder cover (18) is fixedly connected to one end, far away from the box body (10), of the piston cylinder, and an air source port connecting block (22) is fixedly connected to the middle of the outer side of the cylinder cover (18); the middle part of the cylinder cover (18) is opened, and the bottom of the cylinder cover (18) is provided with an air source port B (18-1); the gas source port connecting block (22) is provided with a gas source port A (22-1) along the central axis, and the gas source port A (22-1) is communicated with the inner cavity of the cylinder body (15) through the middle opening of the cylinder cover (18);
one ends of the piston rod (28) and the spring rod (33) which are positioned in the box body (10) are respectively hinged to two ends of the sliding block (32), and the middle part of the sliding block (32) is rotatably connected with a transmission pin (31); the transmission pin (31) slides in a groove in the middle of the shifting fork (11).
2. The pneumatic actuator with the rapid exhaust buffer structure according to claim 1, wherein: one end of the spring barrel (3) is fixedly connected with a bottom cover (1) through a first bolt (36), and the bottom cover (1) is far away from the box body (10); one end of the spring body (4) is fixedly connected to the inner side of the bottom cover (1); the other end of the spring cylinder (3) is fixedly connected with a first connecting cover (6) through a second adjusting bolt (42); the opposite surfaces of the bottom cover (1) and the spring seat (35) are fixedly connected with guide pins (2), and two ends of the spring body (4) are respectively clamped on the guide pins (2) on two sides; an opening at one side of the box body (10) is fixedly connected to the outer side of the first connecting cover (6).
3. The pneumatic actuator with the rapid exhaust buffer structure according to claim 2, characterized in that: the side wall of the spring seat (35) is provided with a plurality of guide pins (34), and the guide pins (34) slide on the inner side of the spring barrel (3).
4. The pneumatic actuator with the rapid exhaust buffer structure according to claim 3, wherein: the piston cylinder comprises a cylinder body (15), and one end of the cylinder body (15) is fixedly connected with a second connecting cover (12); the cylinder cover (18) is fixedly connected to the other end of the cylinder body (15); a pull rod (20) is fixedly connected between the second connecting cover (12) and the cylinder cover (18); two ends of the pull rod (20) are respectively connected with the second cover (12) and the cylinder cover (18) in a penetrating way and fixedly connected through a nut (19); one end of the piston rod (28) positioned in the cylinder body (15) is fixedly connected with a buffer plunger (23); the buffer plunger (23) is positioned on one side of the piston (16) close to the cylinder cover (18); the buffer plunger (23) penetrates through the cylinder cover (18) and is matched with the inner cavity of the gas source port connecting block (22); and an opening at the other side of the box body (10) is fixedly connected to the outer side of the second connecting cover (12).
5. The pneumatic actuator with the rapid exhaust buffer structure according to claim 4, wherein: a guide rod (30) along the axial direction of a spring rod (33) and a piston rod (28) is fixedly connected in the box body (10), and the sliding block (32) is connected to the guide rod (30) in a sliding manner;
the top of the box body (10) is provided with two first adjusting bolts (8), and the two first adjusting bolts (8) are symmetrically arranged; the adjusting bolt I (8) is located in the swing range of the shifting fork and used for adjusting the swing range of the shifting fork (11).
6. The pneumatic actuator with the rapid exhaust buffer structure according to claim 5, wherein: and a first lifting lug (40) is fixedly connected to the outer side wall of the spring cylinder (3), and a second lifting lug (45) is fixedly connected to the top end of the outer wall of the second connecting cover (12).
7. The pneumatic actuator with the rapid exhaust buffer structure according to claim 6, wherein: an oilless bearing (7) is arranged between the sliding block (32) and the transmission pin (31), and the transmission pin (31) penetrates through the oilless bearing (7); the sliding block (32) and the spring rod (33) are fixed through a set screw (48), and the piston rod (28) and the sliding block (32) are fixed through the set screw (48) correspondingly.
8. The pneumatic actuator with the rapid exhaust buffer structure according to claim 7, wherein: the outer side surface of the shifting fork (11) is fixedly connected with two pin shaft cover plates (46), and the two pin shaft cover plates (46) are arranged corresponding to the two sides of the shifting fork (11); the pin shaft cover plate (46) is fixedly connected to the outer side of the shifting fork (11) through a screw (47); the two ends of the transmission pin (31) are limited between the two sides of the shifting fork (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211634465.3A CN115823330A (en) | 2022-12-19 | 2022-12-19 | Pneumatic actuator with rapid exhaust buffer structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211634465.3A CN115823330A (en) | 2022-12-19 | 2022-12-19 | Pneumatic actuator with rapid exhaust buffer structure |
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| CN115823330A true CN115823330A (en) | 2023-03-21 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB347903A (en) * | 1929-06-18 | 1931-05-07 | Gilbert & Barker Mfg Co | Improvements in liquid dispensing apparatus |
| FR1469248A (en) * | 1965-01-11 | 1967-02-10 | Midland Ross Corp | vehicle braking equipment, action proportionate to the axle load |
| CN103672123A (en) * | 2013-11-30 | 2014-03-26 | 无锡智能自控工程股份有限公司 | Buffer type large-torque spring restoration executing mechanism |
| CN104565508A (en) * | 2014-12-22 | 2015-04-29 | 上海大成仪表有限责任公司 | Transverse-mounting type pneumatic piston executing mechanism of angular travel adjusting valve |
| CN107588228A (en) * | 2017-09-26 | 2018-01-16 | 无锡福斯拓科科技有限公司 | A kind of shift fork type pneumatic actuator |
| CN207261786U (en) * | 2017-10-19 | 2018-04-20 | 浙江华尔士自控仪表阀门有限公司 | A kind of pneumatic actuator |
-
2022
- 2022-12-19 CN CN202211634465.3A patent/CN115823330A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB347903A (en) * | 1929-06-18 | 1931-05-07 | Gilbert & Barker Mfg Co | Improvements in liquid dispensing apparatus |
| FR1469248A (en) * | 1965-01-11 | 1967-02-10 | Midland Ross Corp | vehicle braking equipment, action proportionate to the axle load |
| CN103672123A (en) * | 2013-11-30 | 2014-03-26 | 无锡智能自控工程股份有限公司 | Buffer type large-torque spring restoration executing mechanism |
| CN104565508A (en) * | 2014-12-22 | 2015-04-29 | 上海大成仪表有限责任公司 | Transverse-mounting type pneumatic piston executing mechanism of angular travel adjusting valve |
| CN107588228A (en) * | 2017-09-26 | 2018-01-16 | 无锡福斯拓科科技有限公司 | A kind of shift fork type pneumatic actuator |
| CN207261786U (en) * | 2017-10-19 | 2018-04-20 | 浙江华尔士自控仪表阀门有限公司 | A kind of pneumatic actuator |
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