CN113294402A - Self-locking air cylinder - Google Patents
Self-locking air cylinder Download PDFInfo
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- CN113294402A CN113294402A CN202110698295.4A CN202110698295A CN113294402A CN 113294402 A CN113294402 A CN 113294402A CN 202110698295 A CN202110698295 A CN 202110698295A CN 113294402 A CN113294402 A CN 113294402A
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- self
- cylinder
- locking
- air inlet
- piston
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1423—Component parts; Constructional details
- F15B15/1457—Piston rods
- F15B15/1461—Piston rod sealings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1423—Component parts; Constructional details
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1423—Component parts; Constructional details
- F15B15/1447—Pistons; Piston to piston rod assemblies
- F15B15/1452—Piston sealings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/20—Other details, e.g. assembly with regulating devices
- F15B15/26—Locking mechanisms
Abstract
The invention discloses a self-locking air cylinder, which is characterized in that: the auxiliary air cylinder is also provided with a first air inlet hole and a second air inlet hole which are respectively positioned at two ends of an inner cavity of the auxiliary air cylinder and used for driving the self-locking rod to axially reciprocate, the first piston is positioned between the first air inlet hole and the second air inlet hole in an airtight isolation way, and the first piston is driven by an air inlet driving shaft of the first piston and the second piston to move in the axial direction; the damping device also comprises a damping spring positioned in the auxiliary cylinder; compared with the existing air cylinder, the self-locking air cylinder has the advantages of simple structure, scientific design and strong practicability, and has the functions of avoiding the phenomenon of mutual interference and locking of the self-locking air cylinder and delaying the locking of the piston rod.
Description
Technical Field
The invention relates to the technical field of cylinders, in particular to a self-locking cylinder.
Background
In the automation industry, a plurality of stations need a cylinder to be locked after being lifted in place, the cylinder waits for the pressing of the station of the next process, the bearing capacity of the cylinder is increased after the cylinder is locked, and a plurality of cylinders are normally matched with one automation device to work.
At present, the state of the self-locking cylinder on the market is as follows: firstly, the bearing capacity is improved by increasing the cylinder diameter, and the defects of high energy consumption, high cost and low speed are overcome; manufacturers such as smc Addie at present on the market all adopt a (auxiliary cylinder) postposition spring gas filling mode, and the auxiliary cylinder cannot guarantee that the auxiliary cylinder is opened in one step and is often blocked in the process of resetting the postposition main cylinder, so that the defect is obvious; and a certain manufacturer adopts double cylinders to start successively through electromagnetic program control, and after the main cylinder rises, the working radial rod of the second cylinder is locked to prevent the main rod of the main cylinder from moving.
The invention discloses a cylinder with a lock, which controls the movable locking of a piston rod of a main cylinder through an auxiliary cylinder, and is essentially double-cylinder combined interaction, generally, the arrangement in the prior art needs a program to control the staggered starting time of two electromagnetic valves, when one cylinder moves to a proper position, a signal of a magnetic switch on the cylinder is started and provided to a microcomputer to control the other electromagnetic valve, the second cylinder starts to work, or the output end of the microcomputer is directly used for controlling the power supply time of the two electromagnetic valves to enable the cylinder to work. For decades, the control mode is used in the industry of automation equipment, along with the development process of industrial automation equipment, the requirement on the running speed of a machine is higher and higher, engineers find that the air cylinder works by controlling a magnetic valve by using a microcomputer, and time is wasted:
1. when the first cylinder works in place, the magnetic switch is started to transmit a signal to the microcomputer, and the microcomputer finds that the signal is transmitted to the electromagnetic valve to be started to enable the second cylinder to work, so that time is required in the process.
2. The microcomputer output end directly staggers two times to signal two solenoid valves to control two cylinders to work, although no time waste appears, the microcomputer output end comprises: because the air supply is influenced by the work of other equipment, the air pressure of the air supply changes, so that the movement time difference of the air cylinder is caused, the response speed of the electromagnetic valve also has time difference under normal conditions, and other factors on uncertain equipment exist, so that an engineer can start the second air cylinder after the first air cylinder stays in place when designing a machine, and equipment with high stability requirement generally adopts a magnetic switch to send a signal to start the second air cylinder.
3. The double-control combined self-locking cylinder has the problems that when the first cylinder is met, the air pressure is insufficient, the starting is delayed or not started, when the control failure or error condition occurs, the second cylinder is normally started under the control, the first cylinder is not completely in place, the two cylinders work in conflict, the work cannot be smoothly carried out if the first cylinder is not completely in place, the damage and the unnecessary loss are seriously and directly caused, and the work progress is delayed after the maintenance.
Disclosure of Invention
The invention aims to provide a self-locking cylinder, which is characterized in that an auxiliary cylinder is arranged on the side surface of the self-locking cylinder and is matched with a main cylinder to work in a linkage manner, the locking and the time delay of the self-locking cylinder are effectively and accurately controlled through ingenious structural design, and the problem of the locking phenomenon caused by the interference between a self-locking mechanism of the existing locking cylinder and a cylinder piston rod is avoided.
To the above, the present invention discloses a technical solution for the above purpose: the utility model provides a self-locking cylinder, includes the master cylinder and assists the cylinder, the master cylinder includes piston rod and the reciprocal movable inlet port four of drive piston rod axial and inlet port three, assist the cylinder and set up in the master cylinder side, including the self-locking pole that has piston one, the annular groove phase-match grafting block that sets up on the one end of self-locking pole stretches into master cylinder and the piston rod is used for the self-locking piston rod, its characterized in that: the auxiliary cylinder is also provided with a first air inlet hole and a second air inlet hole which are used for driving the self-locking rod to axially reciprocate, the first piston is positioned between the first air inlet hole and the second air inlet hole and is arranged in an airtight isolation way, and the first piston axially moves along the inner cavity of the auxiliary cylinder under the driving of the first air inlet hole or the second air inlet hole; the damping spring is positioned in the auxiliary cylinder, provides elastic delay resistance for the self-locking rod when the self-locking rod moves towards the main cylinder, and provides axial thrust for the self-locking rod when the air inlet hole does not admit air and the self-locking rod moves away from the main cylinder.
As a further arrangement of the scheme, the air inlet hole III is communicated with the air inlet hole II, and the air inlet hole I is communicated with the air inlet hole IV.
As a further arrangement of the above scheme, the auxiliary cylinder is further provided with a first air outlet hole communicated with the first air inlet hole when the self-locking rod unlocks the piston rod, the first air inlet hole and the fourth air inlet hole are communicated, the third air inlet hole and the first air outlet hole are communicated, after the second air inlet hole is aerated, the self-locking rod moves and unlocks the piston rod, and the first air outlet hole and the second air inlet hole are communicated.
As a further arrangement of the above scheme, the damping spring is sleeved on the self-locking rod, and two ends of the damping spring respectively abut against the end face of the self-locking rod and the end face of the auxiliary cylinder inner cavity.
As a further arrangement of the scheme, a second piston with an air sealing ring is arranged on the piston rod, and the annular groove is located on one side of the second piston.
As a further arrangement of the above scheme, the second piston includes a first piston component with a gas-tight structure, a second piston component with an annular groove, and a third piston component with a gas-tight structure, and the second piston component is provided with a plurality of threaded holes for fixing the second piston component to the piston rod.
As a further arrangement of the above scheme, the diameter of the first piston assembly is smaller than that of the second piston assembly, the step between the first piston assembly and the second piston assembly is an inclined plane, and the end part of the self-locking rod, facing one side of the annular groove, is provided with a round corner surface matched with the inclined plane.
Compared with the existing cylinder, the self-locking cylinder is provided with the auxiliary cylinder and the damping spring on the side surface to be matched with the main cylinder for linkage work, and the damping spring is matched through the ingenious air path communication structural design; the self-locking air cylinder has the advantages of simple structure, scientific design and strong practicability, and can be installed in a group matching manner by users according to the use scene and requirements.
Drawings
Fig. 1 is a schematic structural view of a lock cylinder in an unlocked state according to embodiment 1 of the present invention.
Fig. 2 is a structural schematic diagram of a lock state of the self-locking cylinder in embodiment 1 of the present invention.
Fig. 3 is a schematic structural view of the lock cylinder in an unlocked state according to embodiment 2 of the present invention.
Fig. 4 is a schematic structural view of a lock state of the self-locking cylinder in embodiment 2 of the present invention.
Description of the drawings: 1. a master cylinder; 11. a piston rod; 12. a second piston; 121. a first piston assembly; 122. a second piston assembly; 123. a third piston assembly; 13. an annular groove; 14. a third air inlet hole; 15. an air inlet hole IV; 18. a damping spring; 2. an auxiliary cylinder; 21. a self-locking lever; 22. a first piston; 23. a first air inlet; 24. a second air inlet; 25. and a first air outlet.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflicting with each other.
The self-locking cylinder shown in fig. 1-2 comprises a main cylinder 1 and an auxiliary cylinder 2, wherein the main cylinder 1 comprises a piston rod 11 and four air inlet holes 15 and three air inlet holes 14 for driving the piston rod 11 to axially reciprocate, the auxiliary cylinder 2 is arranged on the side surface of the main cylinder 1 and comprises a self-locking rod 21 with a piston 22, one end of the self-locking rod 21 extends into the main cylinder 1 and is matched with and spliced with an annular groove 13 arranged on the piston rod 11, and the self-locking cylinder is characterized in that: the auxiliary cylinder 2 is also provided with a first air inlet hole 23 and a second air inlet hole 24 which are used for driving the self-locking rod 21 to axially reciprocate, the first piston 22 is positioned between the first air inlet hole 23 and the second air inlet hole 24 and is arranged in an airtight isolation way, and the first piston 22 axially moves along the inner cavity of the auxiliary cylinder 2 under the air inlet driving of the first air inlet hole 23 or the second air inlet hole 24; the damping spring 18 is positioned in the auxiliary cylinder 2, when the self-locking rod 21 moves towards the main cylinder 1, the damping spring 18 provides elastic delay resistance for the self-locking rod 21, when the air inlet hole I23 does not admit air, and when the self-locking rod 21 moves away from the main cylinder 1, the damping spring provides axial thrust for the self-locking rod 21.
As a further arrangement of the above scheme, the air inlet hole three 14 is communicated with the air inlet hole two 24, and the air inlet hole one 23 is communicated with the air inlet hole four 15.
As a further arrangement of the above scheme, the auxiliary cylinder 2 is further provided with a first air outlet 25 communicated with a first air inlet 24 when the self-locking lever 21 unlocks the piston rod 11, the first air inlet 23 is communicated with a fourth air inlet 15, the third air inlet 14 is communicated with the first air outlet 25, and after the second air inlet 24 is fed, the self-locking lever 21 moves and unlocks the piston rod 11, the first air outlet 25 is communicated with the second air inlet 24.
As a further arrangement of the above scheme, the damping spring 18 is sleeved on the self-locking lever 21, and two ends of the damping spring respectively abut against the end surface of the self-locking lever 21 and the end surface of the inner cavity of the auxiliary cylinder 2.
As a further arrangement of the above scheme, a second piston 12 with an air sealing ring is arranged on the piston rod 11, and the annular groove 13 is located on one side of the second piston 13.
As a further arrangement of the above solution, the second piston 12 comprises a first piston assembly 121 with a gas-tight structure, a second piston assembly 122 with a ring-shaped groove 13 and a third piston assembly 123 with a gas-tight structure, and the second piston assembly 122 is provided with a plurality of threaded holes for fixing the second piston assembly 122 to the piston rod 11.
Through the arrangement of the scheme, the scheme is characterized in that the air inlet holes four 15 and the air inlet holes one 23 share the air pipe, the damping spring 18 in the auxiliary air cylinder 2 is combined, the damping spring 18 is used for accelerating the separation of the self-locking rod 21 away from the annular groove 13 of the piston rod 11, a reverse acting force is given to the self-locking rod 21 when the air inlet holes one 23 admit air, so that the self-locking rod 21 has a certain delay time for the locking of the piston rod 11, the requirement for the locking of the self-locking rod 21 and the annular groove 13 in a plug-in matching mode is met, the air inlet holes two 24 and one air outlet hole 25 are communicated with the air outlet hole one 25 and then communicated with the air inlet hole three 14 through the air pipe is met, when the working is carried out, air preferentially passes through the auxiliary air cylinder 2 to enable the self-locking rod 21 to separate from the annular groove 13, and then enters the main air cylinder 1, the action of the piston rod 11 at the moment is not interfered with the self-locking rod 21, and the phenomenon that the two are blocked is avoided.
The two ends of the inner cavity of the main cylinder 1 are provided with anti-collision pads, and the tail end of the auxiliary cylinder 2 is connected with the self-locking rod 21 and is provided with a hand lever used for manually releasing the self-locking rod 21 from locking the piston rod 11.
Through the arrangement of the scheme, the hand lever can be used for unlocking the master cylinder 1 under a specific condition scene, so that the hand lever no longer has the functions of locking and delaying.
As a further arrangement of the above scheme, the diameter of the first piston assembly 121 is smaller than that of the second piston assembly 122, the step between the two is an inclined surface, and the end of the self-locking lever 21 facing the annular groove 13 is provided with a rounded surface matching with the inclined surface.
Through the arrangement of the scheme, when the self-locking rod 21 reacts too fast or the resistance of the damping spring 18 is too small in the locking state, the self-locking rod 21 moves in advance, and the self-locking rod 21 can slide into the annular groove 13 along the inclined surface based on the cooperation of the inclined surface and the self-locking rod, so that the self-locking rod and the self-locking rod can be prevented from being locked.
Example 1: working principle of product used on button sewing machine
The working process of the traditional button sewing machine generally adopts an upper air cylinder and a lower air cylinder for manufacturing, the pressure of the upper air cylinder is generally larger than that of the lower air cylinder, and the lower air cylinder is required to bear the lower button based on the telescopic load, so that the upper button and the lower button are pressed together, the prior scheme of radially arranging the auxiliary cylinder often has the problems of incomplete up-and-down pressing due to untimely locking, blockage or equipment damage due to untimely unlocking, the self-locking cylinder of the scheme has simple structure and ingenious design, the auxiliary cylinder 2 is also arranged outside the main cylinder 1, the difference is that the auxiliary cylinder 2 of the scheme is provided with double air inlets, a damping spring 18 and a set of ingenious air path connection mode, the top of a piston rod 11 is used for bearing a lower button placing table of a button sewing machine, an air pump is arranged outside for air supply, only two air pipelines are needed, one air pipe is used for simultaneously supplying air for a first air inlet 23 and a fourth air inlet 15, and the other air pipe is used for simultaneously supplying air for a third air inlet 14 and a second air inlet 24:
self-locking state: namely, the auxiliary cylinder 2 is unlocked, the piston rod 11 is positioned at the lowest part, when the buckle is taken down, the air pump works to simultaneously supply air to the air pipes of the air inlet hole I23 and the air inlet hole IV 15, the air pressure of the air pipe is dispersed in the two air inlet holes, so that the piston rod 11 moves upwards, the self-locking rod 21 moves vertically towards the piston rod 11, the damping spring 18 abutted against the self-locking rod 21 deforms and reversely acts on the self-locking rod 21, the piston rod 11 is instantly put in place before the self-locking rod 21 completes the action, the self-locking rod 21 extends out of the annular groove 13 in a delayed manner relative to the piston rod 11 due to the elasticity of the damping spring 18 to form locking, generally, the piston rod 11 is instantly put in place under the air pressure, and the air in the air pipe shared by the self-locking rod 21 completely passes through the air inlet hole I23 after the air pipe is put into the auxiliary, at the moment, the upper cylinder is pressed downwards, the piston rod 11 of the main cylinder 1 is kept axially fixed based on the self-locking rod 21, and the manufacture of the upper buckle and the lower buckle is completed;
an unlocking state: the air inlet and outlet directions of two air pipes of the air pump are switched under automatic control of an operator or a program, the air inlet hole I23 and the air inlet hole IV 15 do not admit air any more, the pistons of the main air cylinder 1 and the auxiliary air cylinder 2 lose pressure, the air inlet hole II 24 and the air inlet hole III 14 admit air simultaneously, based on the air supply pressure of the damping spring 18 and the air inlet hole II 24 which are not subjected to deformation and reset caused by pressure, the piston I22 of the auxiliary air cylinder 2 is driven to move towards the direction far away from the annular groove 13 from the locking rod 21 and reset before the piston rod 11, the locking of the piston rod 11 is released, the locking rod 21 moves in place at the moment to release the insertion with the annular groove 13, and meanwhile, the piston rod 11 is retreated to the lowest initial state through the pressure of the main air cylinder 1 into which the air inlet hole III 14 enters the air pipe.
Example 2:
the working process of the traditional button sewing machine generally adopts an upper air cylinder and a lower air cylinder for manufacturing, the pressure of the upper air cylinder is generally larger than that of the lower air cylinder, and the lower air cylinder is required to bear the lower button based on the telescopic load, so that the upper button and the lower button are pressed together, the prior scheme of radially arranging the auxiliary cylinder often has the problems of incomplete up-and-down pressing due to untimely locking, blockage or equipment damage due to untimely unlocking, the self-locking cylinder of the scheme has simple structure and ingenious design, the auxiliary cylinder 2 is arranged outside the main cylinder 1, the difference is that the auxiliary cylinder 2 of the scheme is provided with three air inlet holes, a damping spring 18 and a set of ingenious air path connection mode, the top of a piston rod 11 is used for bearing a lower button placing table of a button sewing machine, an air pump is arranged outside for air supply, only two air pipelines are needed, one air pipe is used for simultaneously supplying air for a first air inlet 23 and a fourth air inlet 15, and the other air pipe is used for supplying air for a second air inlet 24:
the locking is the same as that of embodiment 1 of the present application, but the unlocking mode is better than that of embodiment 1;
an unlocking state: the air inlet and outlet directions of two air pipes of the air pump are switched, the air inlet hole I23 and the air inlet hole II 15 do not admit air any more, the pistons of the main air cylinder 1 and the auxiliary air cylinder 2 lose pressure, the air inlet hole II 24 admits air, based on the air supply pressure of the damping spring 18 and the air inlet hole II 24 which are not deformed and reset by pressure, the piston I22 of the auxiliary air cylinder 2 drives the self-locking rod 21 to move and reset towards the direction far away from the annular groove 13, at the moment, the piston rod 11 can not act completely because the main air cylinder 1 does not admit air, the interference problem of the piston rod 11 and the self-locking rod 21 is avoided, the air inlet hole I25 and the air inlet hole II 24 are communicated, the air inlet hole II 24 and the air inlet hole IV 15 are connected, therefore, when the air inlet hole II 34 admits air, the air can be supplied from the air inlet hole IV 15 after the self-locking rod 21, the piston rod 11 can obtain pressure action, the time difference is almost zero, but the time difference and the staggering of the action can be ensured, and the interference problem of equipment damage and locking is completely absent.
Compared with the existing cylinder, the self-locking cylinder with the time delay device disclosed by the invention is in linkage work by matching the radial auxiliary cylinder and the damping spring with the main cylinder, and is designed in a smart gas path communication structure, the self-locking cylinder is arranged in a time delay manner by the spring during locking, and the spring is assisted to quickly reset or arranged in a gas path structure during unlocking, so that the locking phenomenon caused by interference between the existing cylinder locking mechanism and a cylinder piston rod is avoided.
Compared with the existing cylinder, the self-locking cylinder with the time delay device has the advantages that the self-locking rod and the piston rod which are pushed by air pressure do not generate interference through the ingenious design of the air inlet and outlet holes, particularly, the air enters the main cylinder to drive the piston through the mode of firstly unlocking and based on the state change caused by unlocking, the phenomenon of mutual interference and locking of the air is completely avoided, secondly, the communicated double air inlet holes simultaneously admit air and based on the adjustment of the damping spring, the self-locking rod can be assisted to have certain time delay action relative to the piston rod when the piston rod is locked, the piston rod is stably locked, the work of the self-locking cylinder is completed, meanwhile, the self-locking cylinder can be actively adjusted to be suitable for various scenes through the adjustment of the damping spring and the auxiliary cylinder, the structure is simple, the design is scientific, the practicality is strong, and the user of service can be based on the use scene and need carry out the cooperation installation in groups to it, is not restricted to single supplementary cylinder.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (8)
1. The utility model provides a self-locking cylinder, includes master cylinder (1) and assists cylinder (2), master cylinder (1) includes piston rod (11) and drive piston rod (11) axial reciprocating motion's inlet port four (15) and inlet port three (14), assist cylinder (2) to set up in master cylinder (1) side, including self-locking lever (21) that have piston one (22), annular groove (13) phase-match grafting block that sets up on master cylinder (1) and piston rod (11) is stretched into from the one end of self-locking lever (21) is used for self-locking piston rod (11), its characterized in that: the auxiliary cylinder (2) is also provided with a first air inlet hole (23) and a second air inlet hole (24) which are used for driving the self-locking rod (21) to axially reciprocate, the first piston (22) is positioned between the first air inlet hole (23) and the second air inlet hole (24) and is arranged in an airtight isolation way, and the first piston (22) axially moves along the inner cavity of the auxiliary cylinder (2) under the air inlet driving of the first air inlet hole (23) or the second air inlet hole (24); the damping device is characterized by further comprising a damping spring (18) positioned in the auxiliary cylinder (2), wherein the damping spring (18) provides elastic delay resistance for the self-locking rod (21) when the self-locking rod (21) moves towards the main cylinder (1), air does not enter the self-locking rod (21) through the air inlet I (23), and axial thrust is provided for the self-locking rod (21) when the self-locking rod (21) moves away from the main cylinder (1).
2. The self-locking cylinder of claim 1, wherein: the air inlet hole III (14) is communicated with the air inlet hole II (24), and the air inlet hole I (23) is communicated with the air inlet hole IV (15).
3. The self-locking cylinder of claim 1, wherein: and the auxiliary cylinder (2) is also provided with a first air outlet hole (25) communicated with the first air inlet hole (24) when the self-locking rod (21) unlocks the piston rod (11).
4. A self-locking cylinder according to claim 3, wherein: the air inlet hole I (23) and the air inlet hole II (15) are communicated, the air inlet hole III (14) and the air outlet hole I (25) are communicated, the air inlet hole II (24) moves from the lock rod (21) after air is introduced and the locking of the piston rod (11) is released, and the air outlet hole I (25) and the air inlet hole II (24) are communicated.
5. The self-locking cylinder of claim 1, wherein: the damping spring (18) is sleeved on the self-locking rod (21) and two ends of the damping spring respectively support against the end face of the self-locking rod (21) and the end face of the inner cavity of the auxiliary cylinder (2).
6. The self-locking cylinder of claim 2, wherein: and a second piston (12) with an air sealing ring is arranged on the piston rod (11), and the annular groove (13) is positioned on one side of the second piston (13).
7. The self-locking cylinder of claim 6, wherein: the second piston (12) comprises a first piston assembly (121) with a gas sealing structure, a second piston assembly (122) with an annular groove (13) and a third piston assembly (123) with a gas sealing structure, and the second piston assembly (122) is provided with a plurality of threaded holes for fixing the second piston assembly (122) on the piston rod (11).
8. The self-locking cylinder of claim 7, wherein: the diameter of the first piston assembly (121) is smaller than that of the second piston assembly (122), a step between the first piston assembly and the second piston assembly is an inclined surface, and the end part of the self-locking rod (21) facing one side of the annular groove (13) is provided with a round corner surface matched with the inclined surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110698295.4A CN113294402A (en) | 2021-06-23 | 2021-06-23 | Self-locking air cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110698295.4A CN113294402A (en) | 2021-06-23 | 2021-06-23 | Self-locking air cylinder |
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| Publication Number | Publication Date |
|---|---|
| CN113294402A true CN113294402A (en) | 2021-08-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110698295.4A Pending CN113294402A (en) | 2021-06-23 | 2021-06-23 | Self-locking air cylinder |
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| CN206072011U (en) * | 2016-08-31 | 2017-04-05 | 武汉欣力特自动化工程有限公司 | A kind of cylinder with lock with water-proof function |
| CN212429397U (en) * | 2020-06-18 | 2021-01-29 | 无锡诺立研科液压系统有限公司 | Cylinder with self-locking function |
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2021
- 2021-06-23 CN CN202110698295.4A patent/CN113294402A/en active Pending
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|---|---|---|---|---|
| EP1669612A2 (en) * | 2004-12-09 | 2006-06-14 | Bosch Rexroth Teknik AB | Linear cylinder unit with locking means |
| CN201786811U (en) * | 2010-09-25 | 2011-04-06 | 大连首轮机械工业有限公司 | Cylinder with self-locking structure |
| CN202833426U (en) * | 2012-07-02 | 2013-03-27 | 宁波盛达阳光气动机械有限公司 | Air cylinder with locking function |
| CN202883551U (en) * | 2012-10-29 | 2013-04-17 | 宁波亚德客自动化工业有限公司 | Air cylinder with locking device |
| CN206072011U (en) * | 2016-08-31 | 2017-04-05 | 武汉欣力特自动化工程有限公司 | A kind of cylinder with lock with water-proof function |
| CN212429397U (en) * | 2020-06-18 | 2021-01-29 | 无锡诺立研科液压系统有限公司 | Cylinder with self-locking function |
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