CN211305356U - Manual-automatic function cylinder - Google Patents

Abstract

The utility model discloses a manual-automatic function cylinder, concretely relates to automobile production equipment technical field, including the cylinder, the top of cylinder is equipped with the upper cover, the top of upper cover is equipped with the casing, the both ends of upper cover respectively with the upper end of cylinder and the lower extreme fixed connection of casing, the below of cylinder is equipped with the lower cover, the upper end of lower cover is fixed with the lower extreme block of cylinder, the middle part of lower cover is equipped with the end cap. The utility model discloses a be equipped with arm lock, handle bar, return round pin, connecting block, enhancement steel sheet, lead screw, piston rod, piston, adjusting bolt, axis of rotation, forked piece round pin, bearing, forked piece, little pivot assembly and spout, compare with prior art, be favorable to making the cylinder at the during operation reliable and stable, have small, the precision is high, have self-locking function, light in weight and interfere the characteristics that reduce, and can satisfy the demand to different working spaces.

Description

Manual-automatic function cylinder

Technical Field

The utility model relates to an automobile production equipment technical field, more specifically say, the utility model relates to a manual-automatic function cylinder.

Background

A vehicle body welding line which is one of four major production processes of vehicle production is low-efficiency to high-efficiency, from industry 1.0 to industry 4.0, from the development process of a flexible production line from single vehicle to multiple vehicles in a collinear way, a certain gap exists between the automobile industry of China and developed countries no matter the overall design planning idea or the processing and manufacturing level, in order to improve the quality and the productivity of domestic vehicles, stricter requirements are required to be provided for the production process, higher requirements are provided for a tooling fixture in vehicle production, a clamping device which is commonly used in the welding fixture at present clamps the vehicle body welding line, the vehicle sheet metal parts and the general components are clamped by the clamping device to carry and fix the vehicle body parts, then the next vehicle body workpiece welding work is carried out to improve the automation degree, and the welding precision, the quality and the welding efficiency of the welding workpieces are ensured.

The grippers of the factory welding lines of the vehicles currently used in the largest quantities have several disadvantages: the size is large, and the overall shape space size of the clamp and the gripper is increased; the precision is poor, most of the common piston type linear cylinders are fastened by external mechanisms, and the precision is difficult to guarantee; the self-locking function is not provided, and the workpiece is separated from the clamp or the gripper tool falls off or loses deformation under the accident condition of power failure and gas failure; the weight is large, the weight of the clamp and the weight of the gripper are increased no matter the self weight of the clamp or the installation of accessories, and the load capacity is reduced; the interference is easy, the size and the clamping points of the clamp product are distributed, and the interference problem caused by the welding spot position, the workpiece taking and placing and the tool matching is easy to occur.

SUMMERY OF THE UTILITY MODEL

In order to overcome the above-mentioned defect of prior art, the embodiment of the utility model provides a manual-automatic function cylinder, the utility model aims to solve the technical problem that: the clamper of the automobile factory welding assembly line has the advantages of large volume, poor precision, no self-locking function, heavy weight and easy interference.

In order to achieve the above object, the utility model provides a following technical scheme: a manual-automatic integrated function air cylinder comprises a cylinder barrel, wherein an upper cover is arranged above the cylinder barrel, a shell is arranged above the upper cover, two ends of the upper cover are fixedly connected with the upper end of the cylinder barrel and the lower end of the shell respectively, a lower cover is arranged below the cylinder barrel, the upper end of the lower cover is fixedly clamped with the lower end of the cylinder barrel, a plug is arranged in the middle of the lower cover, the outer side wall of the plug is detachably connected with the middle of the lower cover through threads, a piston is arranged inside the cylinder barrel, the outer side wall of the piston is movably connected with the inner side wall of the cylinder barrel, a piston rod is arranged inside the shell, the bottom end of the piston rod penetrates through the upper cover to be detachably connected with the middle of the piston, a fork-shaped piece is arranged above the piston rod, a lead screw is arranged inside the piston rod, the lower portion of the lead screw is movably connected with the inner side, the inside top of casing is equipped with the connecting block, one side of forked piece is equipped with the axis of rotation, the both ends of axis of rotation are rotated with the lateral wall of casing both sides respectively and are connected, the one end of connecting block is rotated with the middle part of forked piece upper end and is connected, the other end of connecting block is rotated with the upper end at axis of rotation middle part and is connected, the outside of casing upper end is equipped with the arm lock, the both ends of arm lock respectively with the both ends fixed connection of axis of rotation, the spout has been seted up to the below of forked piece one side, one side of the below of forked piece is equipped with little pivot assembly, and the outside one side of place-placing on the right of the arm casing is equipped with the handle bar, little pivot assembly runs through the bottom fixed connection of.

The piston is driven to reciprocate up and down through air inlet and exhaust of the air holes of the upper cover and the lower cover, the piston drives the piston rod, the screw rod and the fork-shaped piece to reciprocate up and down through the connection of the adjusting bolt, the left-right swing of the rotating shaft is completed through the connecting block, the function of clamping and opening the external clamping arm is realized through the handle rod, the aim of manually rotating the handle rod can be realized under the state of air break or power break, the handle rod outside the shell is connected with the small rotating shaft assembly in the shell, the small rotating shaft assembly swings left and right while swinging the handle rod, the function of clamping and opening the clamping arm is realized, under the clamping state of the clamping arm, if the air cylinder is in air break or power break, namely the system is in pressure loss, the connecting block can not move under the action of the friction force generated by the bearings at the two ends of the steel sheet and the pin of the, the self-locking of the system is realized, the clamping arm can not be unlocked by self when keeping a clamping state, the clamping function is not influenced by air-break and power-cut, when the clamping arm is clamped, the self-locking of the system can be realized, under the condition of air-break or power-cut, the return pin can be pressed to push the connecting block to be separated from a locking position, the unlocking function is realized, certainly, the unlocking can also be realized through the handle rod, the failure of a tool under the condition of air-break and power-cut is effectively prevented, in order to meet the requirements of different working spaces, the lower cover plug is screwed down under the condition that the component is not decomposed, then the lower cover plug is dismounted, under the condition that the maximum angle of the clamping arm is opened, the screwing-in distance between the piston rod and the screw rod is changed through the rotation of the adjusting bolt by using a spanner, the maximum angle of the opening of the clamping arm.

In a preferred embodiment, the axis of rotation uses fixed block bolted connection with the both ends of arm lock, the axis of rotation passes through the pin to be connected with the connecting block, the upper end of lead screw passes through screw thread and locating pin and forked piece fixed connection, can dismantle through the stay bolt between lower cover and the upper cover and be connected, make compact structure, more rationality.

In a preferred embodiment, a fork pin is arranged in the middle of the upper end of the fork, bearings are sleeved at two ends of the fork pin, the outer side walls of the two bearings are connected with two sides of the upper end of the fork in a matched mode, and the connecting block is rotatably connected with the fork through the fork pin and the bearings so as to realize the rotary connection between the connecting block and the fork.

In a preferred embodiment, the upper end of the small rotating shaft assembly slides on the inner side of the sliding groove through a self-contained bearing, so that the upper end of the small rotating shaft assembly can slide in the sliding groove, and the service life is long.

In a preferred embodiment, an adjusting bolt is arranged in the middle of the bottom end of the piston, the upper end of the piston is detachably connected with the middle of the piston rod through the adjusting bolt, and the screwing-in distance between the piston rod and the screw rod can be changed through the bolt, so that the maximum opening angle of the clamping arm can be changed.

In a preferred embodiment, one side of the upper end of the fork-shaped part is provided with a reinforcing steel sheet, one side of the reinforcing steel sheet is fixedly connected with the inner side wall of the shell, one end of the connecting block is attached to the other side of the reinforcing steel sheet, and when the cylinder is in a gas failure or power failure, namely system decompression, self-locking of the system is realized under the action of friction force generated by the reinforcing steel sheet and bearings at two ends of the fork-shaped part pin.

In a preferred embodiment, a return pin is arranged above the shell, the bottom end of the return pin penetrates through the shell and is attached to the upper wall of the connecting block, and the system can be unlocked by pressing the return pin.

In a preferred embodiment, one side of upper cover is equipped with position sensor, position sensor's bottom can be dismantled through the lateral wall of bolt and upper cover and be connected, the inside one side of casing is equipped with the response piece on the sensor that is located forked piece one side, the below of response piece is equipped with the response piece under the sensor on the sensor, the outside of forked piece is equipped with the response bolt, the response bolt can be dismantled with the outside of forked piece through the screw thread and be connected, response piece, sensor down on the sensor all with position sensor electric connection with the response bolt, can make the clamping state of control system real-time detection arm lock.

In a preferred embodiment, the shell is made of high-strength aluminum alloy, so that the working stability of the system and the cleanliness of the interior of the system are ensured.

In a preferred embodiment, the piston and the cylinder are oval, and the piston and the cylinder are prevented from rotating during operation.

The utility model discloses a technological effect and advantage:

1. the utility model discloses a be equipped with the arm lock, the handle pole, the return pin, the connecting block, the reinforcing steel sheet, the lead screw, the piston rod, a piston, adjusting bolt, the axis of rotation, the forked piece round pin, a bearing, the forked piece, little pivot assembly and spout, compared with the prior art, be favorable to making the cylinder reliable and stable at the time of operation, and small in size, reduced the whole appearance space size of anchor clamps and tongs, high precision, it is higher to the clamp and the positioning accuracy of work piece, have self-locking function, effectively prevent the frock failure under outage and the outage circumstances in grades, light in weight, reduce the whole weight of frock clamp, the lightweight effectively lightens the load, interference is reduced, the effective space saving saves space for the on-the-spot operational environment, and can satisfy the demand to different;

2. the utility model discloses a be equipped with response piece and position sensor under response piece, response bolt, the sensor on the sensor, compare with prior art, be favorable to making the clamping state of control system real-time detection arm lock, guarantee that the frock has guaranteed welding process's precision to the clamp of work piece and positioning accuracy.

Drawings

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

Fig. 2 is a first cross-sectional view of the present invention.

Fig. 3 is a second cross-sectional view of the present invention.

Fig. 4 is a partially enlarged view of a portion a in fig. 2 according to the present invention.

Fig. 5 is a partial enlarged view of the point B in fig. 3 according to the present invention.

The reference signs are: the device comprises a clamping arm 1, a handle rod 2, a return pin 3, a connecting block 4, a reinforcing steel sheet 5, a sensor upper sensing block 6, a sensor upper sensing bolt 7, a lead screw 8, a piston rod 9, a sensor lower sensing block 10, a position sensor 11, an upper cover 12, a piston 13, an adjusting bolt 14, a cylinder barrel 15, a plug 16, a lower cover 17, a shell 18, a rotating shaft 19, a forked part pin 20, a bearing 21, a forked part 22, a small rotating shaft assembly 23 and a sliding chute 24.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The utility model provides a manual-automatic integrated function cylinder, which comprises a cylinder barrel 15, an upper cover 12 is arranged above the cylinder barrel 15, a shell 18 is arranged above the upper cover 12, two ends of the upper cover 12 are respectively fixedly connected with the upper end of the cylinder barrel 15 and the lower end of the shell 18, a lower cover 17 is arranged below the cylinder barrel 15, the upper end of the lower cover 17 is fixedly clamped with the lower end of the cylinder barrel 15, a plug 16 is arranged in the middle of the lower cover 17, the outer side wall of the plug 16 is detachably connected with the middle of the lower cover 17 through threads, a piston 13 is arranged inside the cylinder barrel 15, the outer side wall of the piston 13 is movably connected with the inner side wall of the cylinder barrel 15, a piston rod 9 is arranged inside the shell 18, the bottom end of the piston rod 9 penetrates through the upper cover 12 to be detachably connected with the middle of the piston 13, a fork-shaped part 22 is arranged above the piston rod 9, a, the lower portion of the screw rod 8 is movably connected with the inner side wall of the piston rod 9 through threads, the upper portion of the piston rod 9 is fixedly connected with the middle portion of the bottom end of a fork-shaped member 22, a connecting block 4 is arranged at the top end inside the casing 18, a rotating shaft 19 is arranged on one side of the fork-shaped member 22, two ends of the rotating shaft 19 are respectively rotatably connected with the side walls on two sides of the casing 18, one end of the connecting block 4 is rotatably connected with the middle portion of the upper end of the fork-shaped member 22, the other end of the connecting block 4 is rotatably connected with the upper end of the middle portion of the rotating shaft 19, a clamping arm 1 is arranged on the outer side of the upper end of the casing 18, two ends of the clamping arm 1 are respectively fixedly connected with two ends of the rotating shaft 19, a sliding groove 24 is formed below one side of the fork-shaped member 22, a small rotating shaft assembly 23 is arranged on one, the upper end of the small rotating shaft assembly 23 is connected with the inner side wall of the sliding groove 24 in a sliding mode.

Fixed block bolted connection is used at the both ends of axis of rotation 19 and arm lock 1, axis of rotation 19 is connected with connecting block 4 through the pin, screw thread and locating pin and forked piece 22 fixed connection are passed through to the upper end of lead screw 8, can dismantle through the stay bolt between lower cover 17 and the upper cover 12 and be connected.

The middle part of the upper end of the fork-shaped part 22 is provided with a fork-shaped part pin 20, two ends of the fork-shaped part pin 20 are respectively sleeved with a bearing 21, the outer side walls of the two bearings 21 are connected with two sides of the upper end of the fork-shaped part 22 in a matched mode, and the connecting block 4 is rotatably connected with the fork-shaped part 22 through the fork-shaped part pin 20 and the bearings 21.

The upper end of the small rotating shaft assembly 23 slides inside the sliding groove 24 through a bearing.

The middle part of the bottom end of the piston 13 is provided with an adjusting bolt 14, and the upper end of the piston 13 is detachably connected with the middle part of the piston rod 9 through the adjusting bolt 14.

One side of the upper end of the fork-shaped part 22 is provided with a reinforcing steel sheet 5, one side of the reinforcing steel sheet 5 is fixedly connected with the inner side wall of the shell 18, and one end of the connecting block 4 is attached to the other side of the reinforcing steel sheet 5.

And a return pin 3 is arranged above the shell 18, and the bottom end of the return pin 3 penetrates through the shell 18 and is attached to the upper wall of the connecting block 4.

As shown in fig. 1 to 5, the embodiment specifically is: when the clamping arm 1 works, air is supplied and exhausted through air holes of an upper cover 12 and a lower cover 17 to enable a piston 13 to reciprocate up and down, the piston 13 drives a piston rod 9, a screw rod 8 and a fork-shaped part 22 to reciprocate up and down through the connection of an adjusting bolt 14, the left-right swinging of a rotating shaft 19 is completed through a connecting block 4, the clamping and opening functions of an external clamping arm 1 are realized, through arranging a handle rod 2, the rotating of the handle rod 2 can be manually realized in the air-off or power-off state, the handle rod 2 outside a shell 18 is connected with a small rotating shaft assembly in the shell 18, the small rotating shaft assembly swings left and right while the handle rod 2 is shaken, the up-down movement of the fork-shaped part 22 is completed, so that the clamping and opening functions of the clamping arm 1 are realized, under the clamping state of the clamping arm 1, under the action of friction force generated by a reinforcing steel sheet 5 and bearings 21 at two ends, the connecting block 4 can not move, so that the whole cylinder can not move by itself, system self-locking is realized, the clamping arm 1 can keep a clamping state and can not be unlocked by itself, the clamping function is not influenced by air cut and power cut, when the clamping arm 1 is clamped, the system self-locking can be realized, under the condition of air cut or power cut, the return pin 3 can be pressed to push the connecting block 4 to be separated from a locking position to realize the unlocking function, the unlocking can be realized by the handle rod 2, the tool failure under the condition of power cut and air cut can be effectively prevented, in order to meet the requirements of different working spaces, the plug 16 on the lower cover 17 is screwed down under the condition that the component is not decomposed, then the lower cover 17 is dismounted, under the condition that the clamping arm 1 is opened to the maximum angle, the screwing-in distance between the piston rod 9 and the screw rod 8 is changed by rotating the adjusting bolt 14 by a spanner, and further the maximum opening, the clamping device has the advantages that the maximum opening angle of the clamping arm 1 is guaranteed to be steplessly adjustable within the range from 30 degrees to 110 degrees, namely, the clamping device is beneficial to enabling a cylinder to be stable and reliable in working, the size is small, the overall appearance space size of the clamping device and the gripper is reduced, the precision is high, the clamping and positioning precision of a workpiece is high, the self-locking function is achieved, tool failure under the conditions of power failure and gas failure is effectively prevented, the weight is light, the overall weight of the tool clamping device is reduced, the load is effectively reduced in light weight, interference is reduced, space is effectively saved for the field working environment, the requirements for different working spaces can be met, and the problems that a clamping device of an automobile factory welding assembly line is large in size, poor in precision, free of self-locking function.

One side of upper cover 12 is equipped with position sensor 11, position sensor 11's bottom can be dismantled with the lateral wall of upper cover 12 through the bolt and be connected, 18 inside one side of casing is equipped with and is located response piece 6 on the sensor of forked member 22 one side, the below of responding to piece 6 on the sensor is equipped with response piece 10 under the sensor, the outside of forked member 22 is equipped with response bolt 7, response bolt 7 can be dismantled through the outside of screw thread with forked member 22 and be connected, response piece 6, sensor down respond to piece 10 and response bolt 7 all with position sensor 11 electric connection on the sensor.

The material of the shell 18 is high-strength aluminum alloy.

The piston 13 and the cylinder 15 are both oval.

As shown in fig. 1-2 and fig. 4, the embodiment specifically is: the position sensor 11 (model is GT-72A) of the clamp capable of preventing welding slag can transmit two position states of clamping and opening of the clamping arm 1 when the clamp works to the whole control system in an electric signal mode, when the clamping arm 1 clamps, the sensing bolt 7 on the fork-shaped part 22 is contacted with the sensing block of the sensing block 6 on the sensor, the whole control system receives a clamping signal through the position sensor 11, when the clamping arm 1 opens, the sensing bolt 7 on the fork-shaped part 22 is contacted with the sensing block of the sensing block 10 under the sensor, and the position sensor 11 system receives an opening signal, so that the control system detects the clamping state of the clamping arm 1 in real time, the piston 13 and the cylinder 15 adopt an ellipse shape to prevent autorotation in the working process, the shell 18 adopts high-strength aluminum alloy, the working stability of the system and the cleanliness in the system are ensured, namely, the clamping state of the clamping arm 1 is favorably detected by, the clamping and positioning precision of the tool to the workpiece is guaranteed, the precision of the welding process is guaranteed, and the problem that the clamp of the automobile factory welding assembly line is low in precision is solved.

The utility model discloses the theory of operation:

referring to the attached drawings 1-5 of the specification, when in work, air is fed and exhausted through air holes of an upper cover 12 and a lower cover 17 to enable a piston 13 to reciprocate up and down, the piston 13 drives a piston rod 9, a screw rod 8 and a fork-shaped part 22 to reciprocate up and down through the connection of an adjusting bolt 14, a rotating shaft 19 swings left and right through a connecting block 4 to achieve the clamping and opening functions of an external clamping arm 1, the handle rod 2 is manually rotated to achieve the opening and clamping purposes under the state of air cut-off or power cut-off, the handle rod 2 outside a shell 18 is connected with a small rotating shaft assembly in the shell 18, the small rotating shaft assembly swings left and right while the handle rod 2 is shaken to achieve the up and down movement of the fork-shaped part 22, so that the clamping and opening functions of the clamping arm 1 are achieved, under the clamping state of the clamping arm 1, if an air cylinder is air cut-off or power cut-off, namely, when the system is in pressure loss, the connecting block 4 can not move, so that the whole cylinder can not move by itself, system self-locking is realized, the clamping arm 1 can keep a clamping state and can not be unlocked by itself, the clamping function is not influenced by air cut and power cut, when the clamping arm 1 is clamped, the system self-locking can be realized, under the condition of air cut or power cut, the return pin 3 can be pressed to push the connecting block 4 to be separated from a locking position to realize the unlocking function, the unlocking can be realized by the handle rod 2, the tool failure under the condition of power cut and air cut can be effectively prevented, in order to meet the requirements of different working spaces, the plug 16 on the lower cover 17 is screwed down under the condition that the component is not decomposed, then the lower cover 17 is dismounted, under the condition that the clamping arm 1 is opened to the maximum angle, the screwing-in distance between the piston rod 9 and the screw rod 8 is changed by rotating the adjusting bolt 14 by a spanner, and further the maximum opening, the maximum opening angle of the clamping arm 1 is ensured to be steplessly adjustable within the range from 30 degrees to 110 degrees.

Further, referring to the attached drawings 1-2 and fig. 4 of the specification, a position sensor 11 (model GT-72A) of the clamping device capable of preventing welding slag can transmit two position states of clamping and opening of the clamping arm 1 to the whole control system in an electric signal mode when the clamping device works, when the clamping arm 1 clamps, a sensing bolt 7 on the fork 22 is in contact with a sensing block of a sensing block 6 on the sensor, the whole control system receives a clamping signal through the position sensor 11, when the clamping arm 1 opens, the sensing bolt 7 on the fork 22 is in contact with a sensing block of the sensing block 10 under the sensor, and the position sensor 11 receives an opening signal through the position sensor system, so that the control system detects the clamping state of the clamping arm 1 in real time.

The points to be finally explained are: first, in the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounted," "connected," and "connected" should be understood broadly, and may be a mechanical connection or an electrical connection, or a communication between two elements, and may be a direct connection, and "upper," "lower," "left," and "right" are only used to indicate a relative positional relationship, and when the absolute position of the object to be described is changed, the relative positional relationship may be changed;

secondly, the method comprises the following steps: in the drawings of the disclosed embodiments of the present invention, only the structures related to the disclosed embodiments are referred to, and other structures can refer to the common design, and under the condition of no conflict, the same embodiment and different embodiments of the present invention can be combined with each other;

and finally: the above description is only for the preferred embodiment of the present invention and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. The utility model provides a manual-automatic function cylinder, includes cylinder (15), its characterized in that: an upper cover (12) is arranged above the cylinder barrel (15), a shell (18) is arranged above the upper cover (12), two ends of the upper cover (12) are fixedly connected with the upper end of the cylinder barrel (15) and the lower end of the shell (18) respectively, a lower cover (17) is arranged below the cylinder barrel (15), the upper end of the lower cover (17) is fixedly clamped with the lower end of the cylinder barrel (15), a plug (16) is arranged in the middle of the lower cover (17), the outer side wall of the plug (16) is detachably connected with the middle of the lower cover (17) through threads, a piston (13) is arranged inside the cylinder barrel (15), the outer side wall of the piston (13) is movably connected with the inner side wall of the cylinder barrel (15), a piston rod (9) is arranged inside the shell (18), the bottom end of the piston rod (9) penetrates through the upper cover (12) and is detachably connected with the middle of the piston (13), the upper side of the piston rod (9) is provided with a forked member (22), the inside of the piston rod (9) is provided with a lead screw (8), the lower part of the lead screw (8) is movably connected with the inner side wall of the piston rod (9) through threads, the upper part of the piston rod (9) is fixedly connected with the middle part of the bottom end of the forked member (22), the top end of the inside of the shell (18) is provided with a connecting block (4), one side of the forked member (22) is provided with a rotating shaft (19), the two ends of the rotating shaft (19) are respectively rotatably connected with the side walls at the two sides of the shell (18), one end of the connecting block (4) is rotatably connected with the middle part of the upper end of the forked member (22), the other end of the connecting block (4) is rotatably connected with the upper end of the middle part of the rotating shaft (19), the outer side of the shell (18) is, a sliding groove (24) is formed in the lower portion of one side of the fork-shaped piece (22), a small rotating shaft assembly (23) is arranged on one side of the lower portion of the fork-shaped piece (22), a handle rod (2) is arranged on one side of the outer portion of the shell (18), the small rotating shaft assembly (23) penetrates through the shell (18) and is fixedly connected with the bottom end of the handle rod (2), and the upper end of the small rotating shaft assembly (23) is connected with the inner side wall of the sliding groove (24) in a sliding mode.

2. The automatic function cylinder of claim 1, wherein: fixed block bolted connection is used with the both ends of arm lock (1) in axis of rotation (19), axis of rotation (19) are connected with connecting block (4) through the pin, the upper end of lead screw (8) is through screw thread and locating pin and forked piece (22) fixed connection, can dismantle through the stay bolt and be connected between lower cover (17) and upper cover (12).

3. The automatic function cylinder of claim 1, wherein: the middle part of Y-piece (22) upper end is equipped with Y-piece round pin (20), the both ends of Y-piece round pin (20) all are equipped with bearing (21), two the lateral wall of bearing (21) is connected with the both sides cooperation of Y-piece (22) upper end, connecting block (4) are connected with Y-piece (22) rotation through Y-piece round pin (20) and bearing (21).

4. The automatic function cylinder of claim 1, wherein: the upper end of the small rotating shaft assembly (23) slides on the inner side of the sliding groove (24) through a bearing.

5. The automatic function cylinder of claim 1, wherein: the middle part of piston (13) bottom is equipped with adjusting bolt (14), the upper end of piston (13) is passed through adjusting bolt (14) and is dismantled in the middle part of piston rod (9) and be connected.

6. The automatic function cylinder of claim 1, wherein: one side of fork shape spare (22) upper end is equipped with reinforcing steel sheet (5), one side of reinforcing steel sheet (5) and the inside wall fixed connection of casing (18), the one end of connecting block (4) and the opposite side laminating of reinforcing steel sheet (5).

7. The automatic function cylinder of claim 1, wherein: the upper side of the shell (18) is provided with a return pin (3), and the bottom end of the return pin (3) penetrates through the upper wall of the shell (18) and is attached to the upper wall of the connecting block (4).

8. The automatic function cylinder of claim 1, wherein: one side of upper cover (12) is equipped with position sensor (11), the bottom of position sensor (11) is passed through the bolt and can be dismantled with the lateral wall of upper cover (12) and be connected, the inside one side of casing (18) is equipped with and is located response piece (6) on the sensor of forked piece (22) one side, the below of response piece (6) is equipped with response piece (10) under the sensor on the sensor, the outside of forked piece (22) is equipped with response bolt (7), response bolt (7) can be dismantled with the outside of forked piece (22) through the screw thread and be connected, response piece (6), sensor down respond to piece (10) and response bolt (7) all with position sensor (11) electric connection on the sensor.

9. The automatic function cylinder of claim 1, wherein: the shell (18) is made of high-strength aluminum alloy.

10. The automatic function cylinder of claim 1, wherein: the piston (13) and the cylinder barrel (15) are both oval.

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