CN113847303A

CN113847303A - Buffering hydraulic cylinder

Info

Publication number: CN113847303A
Application number: CN202111258115.7A
Authority: CN
Inventors: 顾忙忙; 周建
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-10-27
Filing date: 2021-10-27
Publication date: 2021-12-28

Abstract

The invention relates to the technical field of hydraulic cylinders, in particular to a buffer hydraulic cylinder which comprises a front end cover, a rear end cover, a connecting arm, an oil outlet and an oil inlet, wherein cavities are formed in the front end cover and the rear end cover, the connecting arm is fixedly installed at one end of the front end cover, the oil inlet is formed in the upper end of the front end cover, the oil outlet is formed in the upper end of the rear end cover, a first cylinder body and a second cylinder body are fixedly installed between the front end cover and the rear end cover, and the second cylinder body is located inside the first cylinder body. According to the invention, through arranging the oil scraping ring, the generator, the electric heating wire and other mechanisms, the piston rod and the rubber roller drive the rotating shaft of the generator to rotate through friction, so that the interior of the generator is driven to start generating electricity, current is stored in the storage battery for standby application, the second cylinder body is heated by utilizing the power-on heating function of the electric heating wire, so that hydraulic oil is heated, and the effect of increasing the fluidity of the hydraulic oil is realized.

Description

Buffering hydraulic cylinder

Technical Field

The invention relates to the technical field of hydraulic cylinders, in particular to a buffer hydraulic cylinder.

Background

The hydraulic cylinder is a hydraulic actuator which converts hydraulic energy into mechanical energy and performs linear reciprocating motion or swinging motion. It has simple structure and reliable operation. When it is used to implement reciprocating motion, it can omit speed-reducing device, and has no transmission gap, and its motion is stable, so that it can be extensively used in various mechanical hydraulic systems. The output force of the hydraulic cylinder is in direct proportion to the effective area of the piston and the pressure difference between the two sides of the effective area; the hydraulic cylinder is basically composed of a cylinder barrel and a cylinder cover, a piston and a piston rod, a sealing device, a buffering device and an exhaust device. The damping device and the exhaust device are determined according to specific application occasions, and other devices are necessary.

In the prior art (No. CN109114303A), an auxiliary device for installing a large-aperture steel corrugated pipe in an alpine-cold high-altitude area comprises an installation plate, wherein a device main body is fixed at the lower end of the installation plate, a second cavity is arranged in the device main body, a hydraulic cylinder is installed at the upper end of the second cavity, the upper end of the hydraulic cylinder is fixed with the installation plate, the lower end of the hydraulic cylinder and the upper end surface of the second cavity are on the same horizontal plane, an electric heating plate is installed on the outer side of the hydraulic cylinder, and a first heat insulation layer is fixed on the outer side of the electric heating plate. This device keeps warm and preheats the pneumatic cylinder at the during operation through setting up electric plate and first insulating layer, prevents that hydraulic oil from solidifying in cold areas, influences the use of device.

The above patent installs electric plate, electrothermal tube and heating wire on original pneumatic cylinder, keeps warm to the pneumatic cylinder, prevents that hydraulic oil from solidifying because of the temperature subcooling, influences the use of device. However, the above patent still has the drawbacks that the start of the power supply is slow in cold regions, the consumption of the power supply is increased, and the mechanism for controlling the temperature is not designed in the above patent, so that the temperature cannot be guaranteed when the device is heated, the hydraulic oil is not favorably heated well, excessive heating can accelerate the consumption of the hydraulic oil, and the hydraulic cylinder fails to work in severe cases, so that the installation work fails.

To this end, a damping cylinder is proposed.

Disclosure of Invention

The invention aims to provide a buffer hydraulic cylinder to solve the problems of slow action and poor buffer effect of the hydraulic cylinder caused by high viscosity and poor fluidity of hydraulic oil under the condition of low temperature in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme:

a buffer hydraulic cylinder comprises a front end cover, a rear end cover, a connecting arm, an oil outlet and an oil inlet, wherein cavities are respectively arranged in the front end cover and the rear end cover, the connecting arm is fixedly arranged at one end of the front end cover, the oil inlet is arranged at the upper end of the front end cover, the oil outlet is arranged at the upper end of the rear end cover, a first cylinder body and a second cylinder body are fixedly arranged between the front end cover and the rear end cover, the second cylinder body is positioned in the first cylinder body, two symmetrically-arranged oil through openings are respectively arranged at one sides of the front end cover and the rear end cover, the oil inlet and the oil outlet are respectively communicated with the second cylinder body through the oil through openings, a pressing plate is fixedly arranged at the other side of the rear end cover, a piston rod is slidably arranged in the second cylinder body, the piston rod penetrates through the pressing plate and extends to the outside, a piston is fixedly arranged at one end of the piston rod, an oil scraping ring is fixedly arranged in the rear end cover, the oil scraping ring is sleeved on the piston rod, a generator is fixedly mounted on one side of the pressing plate, a rotating shaft of the generator is fixedly connected with a rubber roller, the surface of the rubber roller is tightly attached to the piston rod, a storage battery is fixedly mounted on the rear end cover, an electric heating wire is wound on the second cylinder body, and the storage battery is electrically connected with the electric heating wire through a conducting wire;

the improved electric heating wire stirring device is characterized in that a stirring mechanism used for accelerating the diffusion of heat of an electric heating wire in hydraulic oil is arranged on the piston rod, an adjusting mechanism used for adjusting the output current of the storage battery is arranged on the first cylinder body, two symmetrically-arranged grooves are formed in one side of the rear end cover, a buffer mechanism used for slowing down the impact of the piston rod and protecting the stirring mechanism is arranged in each groove, and an adsorption assembly used for absorbing iron chips adhered to the piston rod is arranged on one side of the pressing plate.

Through setting up the frizing circle, the generator, mechanism such as heating wire, in the in-process of piston rod motion, most hydraulic oil on piston rod surface is stayed in the cavity of rear end cap and flows back to in the second cylinder body under the effect of frizing circle, realize that the piston rod extends to the partial absorption that reduces dust in the air to the outside, drive the pivot rotation of generator through the friction between piston rod and the rubber roll, and then drive the inside electricity generation that begins of generator, and current storage is for use in the battery, the circular telegram of utilizing the heater function of generating heat heats the second cylinder body, and then heat hydraulic oil, the realization is to the mobile increase effect of hydraulic oil.

Preferably, rabbling mechanism includes the first magnet that fixed mounting set up at the inside a plurality of symmetries of second cylinder body, fixed mounting has the telescopic link that six symmetries set up on the piston rod, six the equal fixed mounting in one end of telescopic link has second magnet, second magnet all corresponds with first magnet, and first magnet and second magnet are homopolar magnet, the cover is equipped with first spring on the telescopic link, and the both ends difference fixed connection of first spring is on piston rod and second magnet.

Through setting up first magnet, the telescopic link, mechanisms such as second magnet, drive the piston rod and remove when the piston rod moves, compress telescopic link and first spring under the repulsion effect of first magnet and second magnet, when the piston rod continues to move and repulsion disappears, the telescopic link extends under the elasticity effect of first spring, second magnet stirs hydraulic oil with the telescopic link under this kind of reciprocal flexible state, the inside thermal circulation of hydraulic oil is accelerated, further increase the mobility of hydraulic oil.

Preferably, the adjusting mechanism comprises a first fixing rod fixedly installed between the front end cover and the rear end cover, one side of the rear end cover is fixedly installed on the conductive block, a conductor bar is fixedly installed on one side of the conductive block, the conductor bar is connected with a conductive sliding block in a sliding mode, the conductive sliding block is connected to the first cylinder body in a sleeved mode, binding posts are fixedly installed on the top ends of the conductive block and the conductive sliding block, a memory spring is fixedly installed between the conductive block and the conductive sliding block, a resistance wire is wound on the first cylinder body, one end of the resistance wire is fixedly connected to the conductive block, the first fixing rod penetrates through the conductive block and the conductive sliding block, and the binding posts are electrically connected with the storage battery through wires.

By arranging the conductive block, the conductive sliding block, the resistance wire and other mechanisms, when the electric heating wire is initially heated, the conductive block is connected with the conductive sliding block through the conductor bar, the electric heating wire and a loop formed by the storage battery are approximately regarded as a circuit without resistance, when current flows for a period of time, the electric heating wire generates heat, the first cylinder body continuously increases the heat through the heat diffused by the first cylinder body, the memory spring is heated and extends and pushes the conductive sliding block to move, after the conductor bar is separated from the conductive sliding block, the conductive sliding block contacts the resistance wire to increase the resistance in the loop, the current is reduced at the moment, and the temperature of the electric heating wire is reduced; when the temperature is reduced to a certain value, the memory spring is shortened, the resistance in the loop is reduced, the current is increased, the electric heating wire heats again, the temperature of the electric heating wire is controlled, and the heat of the second cylinder body is about a certain value.

Preferably, buffer gear includes the second dead lever of fixed mounting in the recess inside, the cover is equipped with the second spring that two symmetries set up, two on the second dead lever the one end fixed connection of second spring is on the inner wall of recess, the other end fixedly connected with slider of second spring, and the slider cover is established on the second dead lever, it has the bull stick to articulate on the slider, the bull stick articulates there is the connecting rod, the one end fixed mounting of connecting rod has the block rubber.

Through setting up the second dead lever, the second spring, mechanisms such as rubber block, at the in-process of piston rod continuous operation, the kinetic energy of piston rod is bigger and bigger, the impact force of piston when striking rear end cover can be very big, damage piston and other parts easily, when piston extrusion rubber block, promote the bull stick simultaneously and remove, and drive the slider and slide on the second dead lever, compress the second spring this moment, make the functioning speed of piston reduce under the elastic force effect of second spring, the realization is to the protection of telescopic link and piston and other parts.

Preferably, the adsorption assembly comprises a coil fixedly mounted on the pressure plate, and the coil is electrically connected with the storage battery.

At the in-process of piston rod continuous motion, mutual friction can produce iron fillings between the part, and the iron fillings are pasted and are brought into in the second jar on the piston rod for hydraulic oil receives the pollution, reduces the buffer characteristic of hydraulic oil, and the coil passes through the battery circular telegram and produces magnetism and adsorb iron fillings, reduces the pollution of hydraulic oil.

Preferably, the first magnets are installed on the second cylinder body in a staggered manner.

Repulsion that the second magnet received can weaken relatively under the magnetic force of crisscross each other, and the dislocation installation of first magnet makes the magnetic force of each first magnet can not influence each other for the second magnet receives stable repulsion, realizes stable stirring effect.

Compared with the prior art, the invention has the beneficial effects that:

1. through setting up the frizing circle, the generator, mechanism such as heating wire, in the in-process of piston rod motion, most hydraulic oil on piston rod surface is stayed in the cavity of rear end cap and flows back to in the second cylinder body under the effect of frizing circle, realize that the piston rod extends to the partial absorption that reduces dust in the air to the outside, drive the pivot rotation of generator through the friction between piston rod and the rubber roll, and then drive the inside electricity generation that begins of generator, and current storage is for use in the battery, the circular telegram of utilizing the heater function of generating heat heats the second cylinder body, and then heat hydraulic oil, the realization is to the mobile increase effect of hydraulic oil.

2. Through setting up mechanisms such as first magnet, telescopic link, second magnet, drive the piston rod and remove when the piston rod moves, compress telescopic link and first spring under the repulsion effect of first magnet and second magnet, when the piston rod continues to move and repulsion disappears, the telescopic link extends under the elasticity effect of spring, the second magnet stirs hydraulic oil with the telescopic link under this kind of reciprocal flexible state, the inside thermal circulation of hydraulic oil is accelerated, further increase the mobility of hydraulic oil.

3. By arranging the conductive block, the conductive sliding block, the resistance wire and other mechanisms, when the electric heating wire is initially heated, the conductive block is connected with the conductive sliding block through the conductor bar, the electric heating wire and a loop formed by the storage battery are approximately regarded as a circuit without resistance, when current flows for a period of time, the electric heating wire generates heat, the first cylinder body continuously increases the heat through the heat diffused by the first cylinder body, the memory spring is heated and extends and pushes the conductive sliding block to move, after the conductor bar is separated from the conductive sliding block, the conductive sliding block contacts the resistance wire to increase the resistance in the loop, the current is reduced at the moment, and the temperature of the electric heating wire is reduced; when the temperature is reduced to a certain value, the memory spring is shortened, the resistance in the loop is reduced, the current is increased, the electric heating wire heats again, the temperature of the electric heating wire is controlled, and the heat of the second cylinder body is about a certain value.

4. Through setting up the second dead lever, the second spring, mechanisms such as rubber block, at the in-process of piston rod continuous operation, the kinetic energy of piston rod is bigger and bigger, the impact force of piston when striking rear end cover can be very big, damage piston and other parts easily, when piston extrusion rubber block, promote the bull stick simultaneously and remove, and drive the slider and slide on the second dead lever, compress the second spring this moment, make the functioning speed of piston reduce under the elastic force effect of second spring, the realization is to the protection of telescopic link and piston and other parts.

Drawings

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

FIG. 2 is a cross-sectional view of the second cylinder block of the present invention;

FIG. 3 is a front cross-sectional view of the present invention;

FIG. 4 is an elevation view of the second cylinder block of the present invention;

FIG. 5 is a side sectional view of the second cylinder block of the present invention;

FIG. 6 is an enlarged view of the structure of FIG. 1 at A in accordance with the present invention;

FIG. 7 is an enlarged view of the structure of FIG. 3 at B in accordance with the present invention;

fig. 8 is an enlarged view of the structure at C in fig. 5 according to the present invention.

In the figure: 1. a front end cover; 2. a rear end cap; 3. a connecting arm; 4. an oil outlet; 5. an oil inlet; 6. a first cylinder; 7. a second cylinder; 8. an oil through hole; 9. pressing a plate; 10. a piston rod; 11. a piston; 12. an oil scraping ring; 13. a generator; 14. a rubber roller; 15. a storage battery; 16. an electric heating wire; 17. a first magnet; 18. a second magnet; 19. a telescopic rod; 20. a first spring; 21. a first fixing lever; 22. a conductive block; 23. a conductor bar; 24. a conductive slider; 25. a binding post; 26. a memory spring; 27. a resistance wire; 28. a groove; 29. a second fixing bar; 30. a second spring; 31. a slider; 32. a rotating rod; 33. a connecting rod; 34. a rubber block; 35. and a coil.

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.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise. Furthermore, the terms "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1 to 8, the present invention provides a buffer hydraulic cylinder, which has the following technical scheme:

a buffer hydraulic cylinder comprises a front end cover 1, a rear end cover 2, a connecting arm 3, an oil outlet 4 and an oil inlet 5, wherein cavities are respectively arranged in the front end cover 1 and the rear end cover 2, the connecting arm 3 is fixedly arranged at one end of the front end cover 1, the oil inlet 5 is arranged at the upper end of the front end cover 1, the oil outlet 4 is arranged at the upper end of the rear end cover 2, a first cylinder body 6 and a second cylinder body 7 are fixedly arranged between the front end cover 1 and the rear end cover 2, the second cylinder body 7 is positioned in the first cylinder body 6, two symmetrically-arranged oil through openings 8 are respectively arranged at one sides of the front end cover 1 and the rear end cover 2, the oil inlet 5 and the oil outlet 4 are communicated with the second cylinder body 7 through the oil through openings 8, a pressing plate 9 is fixedly arranged at the other side of the rear end cover 2, a piston rod 10 is slidably arranged in the second cylinder body 7, the piston rod 10 penetrates through the pressing plate 9 and extends to the outside, a piston 11 is fixedly arranged at one end of the piston rod 10, the oil scraping ring 12 is fixedly installed inside the rear end cover 2, the oil scraping ring 12 is sleeved on the piston rod 10, the generator 13 is fixedly installed on one side of the pressing plate 9, the rotating shaft of the generator 13 is fixedly connected with the rubber roller 14, the surface of the rubber roller 14 is tightly attached to the piston rod 10, the storage battery 15 is fixedly installed on the rear end cover 2, the heating wire 16 is wound on the second cylinder 7, and the storage battery 15 is electrically connected with the heating wire 16 through a conducting wire.

Through setting up mechanisms such as frizing ring 12, generator 13, heating wire 16, in the in-process of piston rod 10 motion, most hydraulic oil on piston rod 10 surface is stayed in the cavity of rear end cap 2 and flows back to in the second cylinder 7 under the effect of frizing ring 12, realize that the piston rod 10 extends to the part of outside and reduces the absorption to dust in the air, drive the pivot rotation of generator 13 through the friction between piston rod 10 and the rubber roll 14, and then drive generator 13 inside and begin to generate electricity, and the current storage is for use in battery 15, utilize the circular telegram of electric heating wire 16 to generate heat the function and heat second cylinder 7, and then heat hydraulic oil, realize the increase effect to hydraulic oil mobility.

As an embodiment of the present invention, referring to fig. 2, 3, and 5, a stirring mechanism for accelerating the heat of the heating wire 16 to diffuse in the hydraulic oil is disposed on the piston rod 10, the stirring mechanism includes a plurality of first magnets 17 symmetrically disposed and fixedly mounted inside the second cylinder 7, six telescopic rods 19 symmetrically disposed and fixedly mounted on the piston rod 10, one end of each of the six telescopic rods 19 is fixedly mounted with a second magnet 18, each of the second magnets 18 corresponds to the first magnet 17, the first magnet 17 and the second magnet 18 are homopolar magnets, the telescopic rod 19 is sleeved with a first spring 20, and two ends of the first spring 20 are respectively fixedly connected to the piston rod 10 and the second magnet 18.

Through setting up mechanisms such as first magnet 17, telescopic link 19, second magnet 18, drive piston rod 10 and move when piston rod 10 moves, compress telescopic link 19 and first spring 20 under the repulsion effect of first magnet 17 and second magnet 18, when piston rod 10 continues to move and repulsion disappears, telescopic link 19 extends under the elasticity effect of first spring 20, second magnet 18 stirs hydraulic oil with telescopic link 19 under this reciprocal flexible state, the circulation of the heat in the hydraulic oil is accelerated, further increase the mobility of hydraulic oil.

Referring to fig. 1, 3 and 6 as an embodiment of the present invention, an adjusting mechanism for adjusting an output current of a battery 15 is disposed on a first cylinder 6, the adjusting mechanism includes a first fixing rod 21 fixedly disposed between a front end cover 1 and a rear end cover 2, one side of the rear end cover 2 is fixedly disposed on a conductive block 22, one side of the conductive block 22 is fixedly disposed with a conductor bar 23, the conductor bar 23 is slidably connected with a conductive slider 24, the conductive slider 24 is sleeved on the first cylinder 6, top ends of the conductive block 22 and the conductive slider 24 are both fixedly disposed with a binding post 25, a memory spring 26 is fixedly disposed between the conductive block 22 and the conductive slider 24, a resistance wire 27 is wound on the first cylinder 6, one end of the resistance wire 27 is fixedly connected to the conductive block 22, the first fixing rod 21 penetrates the conductive block 22 and the conductive slider 24, and the terminal 25 is electrically connected with the battery 15 through a wire.

By arranging the conductive block 22, the conductive slider 24, the resistance wire 27 and other mechanisms, when the heating wire 16 is initially heated, because the conductive block 22 is connected with the conductive slider 24 through the conductor bar 23, the loop formed by the heating wire 16 and the storage battery 15 is approximately regarded as a non-resistance circuit, when current flows for a period of time, the heating wire 16 generates heat, the heat dissipated by the first cylinder 6 enables the first cylinder 6 to continuously increase the heat, the memory spring 26 is heated and extended and pushes the conductive slider 24 to move, after the conductor bar 23 is separated from the conductive slider 24, the conductive slider 24 contacts the resistance wire 27, so that the resistance in the loop is increased, at the moment, the current is reduced, and the temperature of the heating wire 16 is reduced; when the temperature is reduced to a certain value, the memory spring 26 is shortened, the resistance in the loop is reduced, the current is increased, the heating wire 16 heats again, the temperature of the heating wire 16 is controlled, and the heat of the second cylinder 7 is about a certain value.

As an embodiment of the present invention, referring to fig. 3, 5, and 7, two symmetrically disposed grooves 28 are formed on one side of the rear end cover 2, a buffer mechanism for buffering the impact of the piston rod 10 and protecting the stirring mechanism is disposed inside the two grooves 28, the buffer mechanism includes a second fixing rod 29 fixedly disposed inside the grooves 28, two symmetrically disposed second springs 30 are sleeved on the second fixing rod 29, one ends of the two second springs 30 are fixedly connected to the inner wall of the grooves 28, the other end of the second spring 30 is fixedly connected to a sliding block 31, the sliding block 31 is sleeved on the second fixing rod 29, a rotating rod 32 is hinged on the sliding block 31, the rotating rod 32 is hinged to a connecting rod 33, and one end of the connecting rod 33 is fixedly mounted to a rubber block 34.

Through setting up mechanisms such as second dead lever 29, second spring 30, rubber block 34, in the in-process that piston rod 10 lasts the operation, the kinetic energy of piston rod 10 is bigger and bigger, the impact force of piston 11 when striking rear end cover 2 can be very big, damage piston 11 and other parts easily, when piston 11 extrudees rubber block 34, promote bull stick 32 to remove simultaneously, and drive slider 31 and slide on second dead lever 29, compress second spring 30 this moment, make the functioning speed of piston 11 reduce under the spring action of second spring 30, realize the protection to telescopic link 19 and piston 11 and other parts.

Referring to fig. 1 and 3, the suction unit according to an embodiment of the present invention includes a coil 35 fixedly mounted on the platen 9, and the coil 35 is electrically connected to the battery 15.

At piston rod 10 continuous motion's in-process, mutual friction can produce iron fillings between the part, and iron fillings adhesion is brought into in the second cylinder 7 on piston rod 10 for hydraulic oil receives the pollution, reduces the buffer characteristic of hydraulic oil, and coil 35 passes through battery 15 circular telegrams and produces magnetism and adsorb iron fillings, reduces the pollution of hydraulic oil.

Referring to fig. 2, first magnets 17 are mounted on the second cylinder 7 in a staggered manner as an embodiment of the present invention.

The repulsive force received by the second magnet 18 is relatively weakened under the magnetic force which is mutually staggered, the magnetic force of each first magnet 17 cannot be influenced by each other due to the staggered arrangement of the first magnets 17, so that the second magnet 18 receives stable repulsive force, and the stable stirring effect is realized.

The working principle is as follows: in the process of moving the piston rod 10, most of the hydraulic oil on the surface of the piston rod 10 is retained in the cavity of the rear end cover 2 under the action of the oil scraping ring 12 and flows back to the second cylinder 7, the part of the piston rod 10 extending to the outside reduces the adsorption of dust in the air, the rotating shaft of the generator 13 is driven to rotate through friction between the piston rod 10 and the rubber roller 14, the interior of the generator 13 is driven to generate electricity, current is stored in the storage battery 15 for standby, the second cylinder 7 is heated by the electrifying heating function of the electrothermal wire 16, the piston rod 10 is driven to move when the piston rod 10 moves, the telescopic rod 19 and the first spring 20 are compressed under the repulsive force of the first magnet 17 and the second magnet 18, when the piston rod 10 continues to move and the repulsive force disappears, the telescopic rod 19 extends under the elastic force of the first spring 20, the second magnet 18 stirs the hydraulic oil in the reciprocating telescopic state with the telescopic rod 19, when the heating wire 16 is initially heated, because the conductive block 22 and the conductive slider 24 are connected through the conductor bar 23, a loop formed by the heating wire 16 and the storage battery 15 is approximately regarded as a resistance-free circuit, when the heating wire 16 is heated after a period of current application, the first cylinder 6 continuously increases heat due to heat dissipated by the first cylinder 6, the memory spring 26 is heated and extends and pushes the conductive slider 24 to move, after the conductor bar 23 is separated from the conductive slider 24, the conductive slider 24 contacts the resistance wire 27, so that the resistance in the loop is increased, at the moment, the current is reduced, and the temperature of the heating wire 16 is reduced; when the temperature is reduced to a certain value, the memory spring 26 is shortened, the resistance in the loop is reduced, the current is increased, the electric heating wire 16 generates heat again, the temperature of the electric heating wire 16 is controlled, the heat of the second cylinder 7 is about a certain value, in the process of continuous operation of the piston rod 10, the kinetic energy of the piston rod 10 is increased, the impact force of the piston 11 when impacting the rear end cover 2 is large, the piston 11 and other parts are easily damaged, when the piston 11 extrudes the rubber block 34, the rotating rod 32 is simultaneously pushed to move, the sliding block 31 is driven to slide on the second fixing rod 29, at the moment, the second spring 30 is compressed, the operation speed of the piston 11 is reduced under the action of the elastic force of the second spring 30, the coil 35 generates magnetism through electrification of the storage battery 15 to adsorb scrap iron entering the hydraulic oil in a staggered manner, and the magnetic force of the first magnets 17 cannot influence each other, so that the second magnet 18 receives a stable repulsive force.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a buffering pneumatic cylinder, includes front end housing (1), rear end cap (2), linking arm (3), oil-out (4) and oil inlet (5), all is equipped with the cavity in front end housing (1) and rear end cap (2), and the one end fixed mounting of front end housing (1) has linking arm (3), and oil inlet (5) have been seted up to the upper end of front end housing (1), and oil-out (4), its characterized in that have been seted up to the upper end of rear end cap (2): a first cylinder body (6) and a second cylinder body (7) are fixedly installed between the front end cover (1) and the rear end cover (2), the second cylinder body (7) is located inside the first cylinder body (6), two oil through openings (8) which are symmetrically arranged are formed in one side of the front end cover (1) and one side of the rear end cover (2), the oil inlet (5) and the oil outlet (4) are communicated with the second cylinder body (7) through the oil through openings (8), a pressing plate (9) is fixedly installed on the other side of the rear end cover (2), a piston rod (10) is slidably installed inside the second cylinder body (7), the piston rod (10) penetrates through the pressing plate (9) and extends to the outside, a piston (11) is fixedly installed at one end of the piston rod (10), an oil scraping ring (12) is fixedly installed inside the rear end cover (2), and the oil scraping ring (12) is sleeved on the piston rod (10), a generator (13) is fixedly mounted on one side of the pressing plate (9), a rotating shaft of the generator (13) is fixedly connected with a rubber roller (14), the surface of the rubber roller (14) is tightly attached to the piston rod (10), a storage battery (15) is fixedly mounted on the rear end cover (2), an electric heating wire (16) is wound on the second cylinder body (7), and the storage battery (15) is electrically connected with the electric heating wire (16) through a conducting wire;

the improved electric heating wire stirring device is characterized in that a stirring mechanism used for accelerating heat of an electric heating wire (16) to diffuse in hydraulic oil is arranged on the piston rod (10), an adjusting mechanism used for adjusting output current of a storage battery (15) is arranged on the first cylinder body (6), two symmetrically-arranged grooves (28) are formed in one side of the rear end cover (2), a buffer mechanism used for slowing down impact of the piston rod (10) and protecting the stirring mechanism is arranged in the grooves (28), and an adsorption assembly used for absorbing iron chips adhered to the piston rod (10) is arranged on one side of the pressing plate (9).

2. A damping cylinder according to claim 1, characterized in that: rabbling mechanism includes first magnet (17) that fixed mounting set up at the inside a plurality of symmetries of second cylinder body (7), on piston rod (10) telescopic link (19) that six symmetries set up, six the equal fixed mounting in one end of telescopic link (19) has second magnet (18), second magnet (18) all correspond with first magnet (17), and just first magnet (17) are homopolar magnet with second magnet (18), the cover is equipped with first spring (20) on telescopic link (19), and the both ends difference fixed connection of first spring (20) is on piston rod (10) and second magnet (18).

3. A damping cylinder according to claim 1, characterized in that: the adjusting mechanism comprises a first fixing rod (21) fixedly installed between a front end cover (1) and a rear end cover (2), one side of the rear end cover (2) is fixedly installed on a conductive block (22), one side of the conductive block (22) is fixedly installed with a conductor bar (23), the conductor bar (23) is connected with a conductive sliding block (24) in a sliding mode, the conductive sliding block (24) is sleeved on a first cylinder body (6), the top ends of the conductive block (22) and the conductive sliding block (24) are both fixedly installed with a binding post (25), a memory spring (26) is fixedly installed between the conductive block (22) and the conductive sliding block (24), a resistance wire (27) is wound on the first cylinder body (6), one end of the resistance wire (27) is fixedly connected to the conductive block (22), and the first fixing rod (21) penetrates through the conductive block (22) and the conductive sliding block (24), the binding post (25) is electrically connected with the storage battery (15) through a lead.

4. A damping cylinder according to claim 1, characterized in that: buffer gear includes inside second dead lever (29) of fixed mounting in recess (28), the cover is equipped with second spring (30) that two symmetries set up on second dead lever (29), two the one end fixed connection of second spring (30) is on the inner wall of recess (28), the other end fixedly connected with slider (31) of second spring (30), and slider (31) cover establish on second dead lever (29), it has bull stick (32) to articulate on slider (31), bull stick (32) articulate has connecting rod (33), the one end fixed mounting of connecting rod (33) has block rubber (34).

5. A damping cylinder according to claim 1, characterized in that: the adsorption component comprises a coil (35) fixedly mounted on the pressing plate (9), and the coil (35) is electrically connected with the storage battery (15).

6. A damping cylinder according to claim 2, characterized in that: the first magnets (17) are installed on the second cylinder body (7) in a staggered mode.