CN112211874A

CN112211874A - Telescopic hydraulic oil cylinder with buffering and damping structure

Info

Publication number: CN112211874A
Application number: CN202011113954.5A
Authority: CN
Inventors: 王建忠; 王志龙; 徐思军
Original assignee: Changde Lianjia Machinery Co ltd
Current assignee: Changde Lianjia Machinery Co ltd
Priority date: 2020-10-18
Filing date: 2020-10-18
Publication date: 2021-01-12

Abstract

The invention discloses a telescopic hydraulic oil cylinder with a buffering and damping structure, which comprises a main body, the buffering and damping structure and a heat dissipation mechanism, wherein the main body comprises a cylinder barrel, the inner wall of the cylinder barrel is connected with a piston rod, and one end of the piston rod is connected with a pushing handle; buffering shock-absorbing structure is including being located the fixed block of pushing hands bottom, the top of cylinder is provided with the fixed block No. two, the outer wall connection of piston rod has the activity ring, the outer wall connection of activity ring has the dead lever. According to the invention, the heat dissipation area of the hydraulic oil cylinder is increased by arranging the heat dissipation plate, when the hydraulic oil cylinder extends or contracts, the movable ring displaces, the limit block is driven by the fixed rod to displace, the lead screw is driven by the limit block to displace, and the lead screw drives the fan to rotate, so that the air flow between the heat dissipation plates is accelerated, the heat dissipation efficiency is improved, and the heat dissipation of the hydraulic oil cylinder is facilitated.

Description

Telescopic hydraulic oil cylinder with buffering and damping structure

Technical Field

The invention relates to the field of hydraulic oil cylinders, in particular to a telescopic hydraulic oil cylinder with a buffering and damping structure.

Background

The hydraulic oil cylinder is a hydraulic actuating element which converts hydraulic energy into mechanical energy and makes linear reciprocating motion (or swinging motion), has simple structure and reliable work, can omit a speed reducer when realizing reciprocating motion, has no transmission clearance and moves stably, and is widely applied to hydraulic systems of various machines.

However, in the existing hydraulic cylinder, a cushion pad is arranged on a cylinder cover to overcome the impact of a piston on the cylinder cover, and the cushion and the shock absorption cannot be well carried out; meanwhile, the hydraulic oil cylinder works for a long time, high temperature can be generated, the service performance of the oil cylinder can be influenced and the service life of the oil cylinder can be shortened when the hydraulic oil cylinder is in a high-temperature working state for a long time.

Disclosure of Invention

In view of the above problems, the present invention provides a telescopic hydraulic cylinder with a buffering and shock-absorbing structure.

In order to achieve the purpose, the invention provides the following technical scheme: a telescopic hydraulic oil cylinder with a buffering and damping structure comprises a main body, the buffering and damping structure and a heat dissipation mechanism, wherein the main body comprises a cylinder barrel, the inner wall of the cylinder barrel is connected with a piston rod, and one end of the piston rod is connected with a push handle;

wherein, buffering shock-absorbing structure is including being located the fixed block of pushing hands bottom, the top of cylinder is provided with the fixed block No. two, the outer wall connection of piston rod has the loose collar, the outer wall connection of loose collar has the dead lever, the one end of dead lever is connected with the stopper, the outer wall connection of dead lever has the movable block, it has the spring No. one to be located dead lever outer wall connection between stopper and the movable block, be connected with telescopic machanism between fixed block and the movable block, No. two the fixed block passes through telescopic machanism with the movable block and links to each other.

Preferably, the heat dissipation mechanism comprises a screw rod located at the bottom end of the limiting block, the top of the outer wall of the cylinder barrel is connected with a connecting frame, the inner wall of the connecting frame is connected with a fan, the screw rod is connected with the fan, and the outer wall of the cylinder barrel is provided with a heat dissipation plate.

Preferably, telescopic machanism is including the connecting block No. one that links to each other with a fixed block inner wall, the inner wall connection of movable block has the connecting block No. two, be connected with the telescopic link between connecting block and the connecting block No. two, the outer wall connection that is located the telescopic link between connecting block and the connecting block No. two has the spring No. two.

Preferably, a connecting block is connected through the pivot with a fixed block, No. two connecting blocks are connected through the pivot with the movable block, are connected through the pivot between a connecting block and No. two fixed blocks.

Preferably, the outer wall of the screw rod is provided with internal threads, the inner wall of the fan is provided with external threads, and the internal threads of the screw rod are matched with the external threads of the fan.

Preferably, the buffering and shock-absorbing structure is provided with a plurality of groups of outer walls located on the piston rod.

Preferably, the inner wall of the movable block is matched with the outer wall of the fixed rod, and the inner wall of the movable ring is matched with the outer wall of the piston rod.

Preferably, the inside of link is provided with the recess, the top outer wall of fan is provided with the lug, the inner wall of link agrees with the outer wall of fan mutually.

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

1. hydraulic cylinder extends, a connecting block atress is rotatory in fixed block department No. one, No. two connecting block atress rotate in fixed block department No. two, the movable block carries out the displacement along the dead lever to the movable ring simultaneously, a spring extension takes place to deform and produces elasticity, the telescopic link extension drives No. two springs and extends, No. two springs take place to deform and produce elasticity, the elasticity of a spring and No. two springs produces decurrent pulling force to the pushing hands and cushions shock attenuation to hydraulic cylinder, hydraulic cylinder extends and contracts, the movable block displacement drives a spring and contracts, the telescopic link shrink drives No. two springs and contracts a spring and produces ascending thrust to the pushing hands and cushion shock attenuation to hydraulic cylinder, be convenient for cushion shock attenuation to hydraulic cylinder when hydraulic cylinder extends and contracts.

2. Through setting up the heating panel and improving hydraulic cylinder's heat radiating area, when hydraulic cylinder extends or contracts, the activity ring carries out the displacement and drives the stopper through the dead lever and carry out the displacement, and the stopper displacement drives the lead screw and carries out the displacement, and the lead screw drives the fan and rotates for the air flow between the cooling plate improves the radiating efficiency, is convenient for dispel the heat to hydraulic cylinder.

Drawings

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

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

FIG. 3 is a schematic view of the installation of the piston rod of the present invention;

FIG. 4 is a schematic view of the mounting of the telescoping mechanism of the present invention;

FIG. 5 is an exploded view of the present invention;

FIG. 6 is a schematic view of the fan assembly according to the present invention.

In the figure: 10. a main body; 11. a cylinder barrel; 12. a piston rod; 13. a pushing handle; 20. a buffer shock-absorbing structure; 21. a first fixed block; 22. a movable ring; 23. fixing the rod; 24. a limiting block; 25. a movable block; 26. a first spring; 270. a telescoping mechanism; 271. a first connecting block; 272. a second connecting block; 273. a telescopic rod; 274. a second spring; 28. a second fixed block; 30. a heat dissipation mechanism; 31. a screw rod; 32. a fan; 33. a connecting frame; 34. a heat sink.

Detailed Description

The technical solutions in the embodiments of the present invention are clearly and completely described below with reference to the accompanying drawings, 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 should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but 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 construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; 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. 1-6, a telescopic hydraulic cylinder with a buffering and damping structure comprises a main body 10, a buffering and damping structure 20 and a heat dissipation mechanism 30, wherein the main body 10 comprises a cylinder 11, the inner wall of the cylinder 11 is connected with a piston rod 12, and one end of the piston rod 12 is connected with a push handle 13;

buffering shock-absorbing structure 20 is including being located fixed block 21 No. one of pushing hands 13 bottom, the top of cylinder 11 is provided with fixed block 28 No. two, the outer wall connection of piston rod 12 has activity ring 22, the outer wall connection of activity ring 22 has dead lever 23, the one end of dead lever 23 is connected with stopper 24, the outer wall connection of dead lever 23 has movable block 25, it has spring 26 No. one to be located dead lever 23 outer wall connection between stopper 24 and the movable block 25, be connected with telescopic machanism 270 between fixed block 21 and the movable block 25, No. two fixed blocks 28 link to each other through telescopic machanism 270 with movable block 25.

Referring to fig. 4-6, the heat dissipation mechanism 30 includes a screw rod 31 located at the bottom end of the limiting block 24, a connecting frame 33 is connected to the top of the outer wall of the cylinder 11, a fan 32 is connected to the inner wall of the connecting frame 33, the screw rod 31 is connected to the fan 32, and a heat dissipation plate 34 is disposed on the outer wall of the cylinder 11 to facilitate heat dissipation of the hydraulic cylinder.

Please refer to fig. 4 and 5, the telescopic mechanism 270 includes a first connecting block 271 connected to an inner wall of the first fixing block 21, a second connecting block 272 connected to an inner wall of the movable block 25, a telescopic rod 273 connected between the first connecting block 271 and the second connecting block 272, and a second spring 274 connected to an outer wall of the telescopic rod 273 between the first connecting block 271 and the second connecting block 272 for facilitating the telescopic rod 273 to be extended.

Please refer to fig. 4 and 5, the first connecting block 271 is connected to the first fixing block 21 through a rotating shaft, so that the first connecting block 271 and the first fixing block 21 rotate relatively, the second connecting block 272 is connected to the movable block 25 through a rotating shaft, so that the second connecting block 272 and the movable block 25 rotate relatively, and the first connecting block 271 and the second fixing block 28 are connected through a rotating shaft, so that the first connecting block 271 and the second fixing block 28 rotate relatively.

Please refer to fig. 4, the outer wall of the screw rod 31 is provided with an internal thread, the inner wall of the fan 32 is provided with an external thread, and the internal thread of the screw rod 31 is matched with the external thread of the fan 32, so that the screw rod 31 can move to drive the fan 32 to rotate.

Referring to fig. 1-3, the shock absorbing structure 20 is provided with a plurality of groups of outer walls located on the piston rod 12, so as to further enhance the effect of the shock absorbing structure 20.

Referring to fig. 1-6, the inner wall of the movable block 25 fits the outer wall of the fixed rod 23 to facilitate the sliding of the movable block 25 on the fixed rod 23, and the inner wall of the movable ring 22 fits the outer wall of the piston rod 12 to facilitate the sliding of the movable ring 22 on the piston rod 12.

Please refer to fig. 6, a groove is formed inside the connecting frame 33, a protrusion is formed on the outer wall of the top of the fan 32, and the inner wall of the connecting frame 33 is engaged with the outer wall of the fan 32, so that the fan 32 can rotate on the connecting frame 33.

The working principle is as follows: firstly, the hydraulic oil cylinder is started to extend, the first connecting block 271 is stressed to rotate at the first fixed block 21, the second connecting block 272 is stressed to rotate at the second fixed block 28, meanwhile, the movable block 25 moves towards the movable ring 22 along the fixed rod 23, the first spring 26 extends and deforms to generate elastic force, the telescopic rod 273 extends to drive the second spring 274 to extend, the second spring 274 deforms to generate elastic force, the elastic force of the first spring 26 and the second spring 274 generate downward pulling force on the push handle 13 to buffer and damp the hydraulic oil cylinder, the hydraulic oil cylinder extends and contracts, the movable block 25 moves to drive the first spring 26 to contract, the telescopic rod 273 contracts to drive the second spring 274 to contract the elastic force of the first spring 26 and the second spring 274 to generate upward pushing force on the push handle 13 to buffer and damp the hydraulic oil cylinder, when the hydraulic oil cylinder extends or contracts, the movable ring 22 displaces, the fixed rod 23 drives the limiting block 24 to displace, the limiting block 24 displaces, the lead screw 31 is driven by the limiting block 24 to displace, the lead screw 31 drives the fan 32 to rotate, air flowing between the heat dissipation plates 34 is accelerated, and heat dissipation efficiency is improved.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive.

Claims

1. The utility model provides a concertina type has buffering shock-absorbing structure's hydraulic cylinder, includes main part (10), buffering shock-absorbing structure (20) and heat dissipation mechanism (30), its characterized in that: the main body (10) comprises a cylinder barrel (11), the inner wall of the cylinder barrel (11) is connected with a piston rod (12), and one end of the piston rod (12) is connected with a push handle (13); buffering shock-absorbing structure (20) is including being located fixed block (21) of pushing hands (13) bottom, the top of cylinder (11) is provided with No. two fixed blocks (28), the outer wall connection of piston rod (12) has activity ring (22), the outer wall connection of activity ring (22) has dead lever (23), the one end of dead lever (23) is connected with stopper (24), the outer wall connection of dead lever (23) has movable block (25), it has spring (26) to be located dead lever (23) outer wall connection between stopper (24) and movable block (25), be connected with telescopic machanism (270) between fixed block (21) and movable block (25), No. two fixed blocks (28) link to each other through telescopic machanism (270) with movable block (25).

2. The telescopic hydraulic oil cylinder with the buffering and shock-absorbing structure as claimed in claim 1, wherein: the heat dissipation mechanism (30) comprises a screw rod (31) located at the bottom end of the limiting block (24), the top of the outer wall of the cylinder barrel (11) is connected with a connecting frame (33), the inner wall of the connecting frame (33) is connected with a fan (32), the screw rod (31) is connected with the fan (32), and the outer wall of the cylinder barrel (11) is provided with a heat dissipation plate (34).

3. The telescopic hydraulic oil cylinder with the buffering and shock-absorbing structure as claimed in claim 1, wherein: telescopic machanism (270) including No. one connecting block (271) that links to each other with a fixed block (21) inner wall, the inner wall of activity piece (25) is connected with No. two connecting blocks (272), be connected with telescopic link (273) between a connecting block (271) and No. two connecting blocks (272), the outer wall that is located telescopic link (273) between a connecting block (271) and No. two connecting blocks (272) is connected with No. two spring (274).

4. The telescopic hydraulic oil cylinder with the buffering and shock-absorbing structure as claimed in claim 1, wherein: a connecting block (271) is connected with a fixed block (21) through a rotating shaft, a second connecting block (272) is connected with a movable block (25) through a rotating shaft, and the first connecting block (271) is connected with the second fixed block (28) through a rotating shaft.

5. A telescopic hydraulic cylinder with a buffering and shock-absorbing structure as claimed in claim 2, characterized in that: the outer wall of the screw rod (31) is provided with internal threads, the inner wall of the fan (32) is provided with external threads, and the internal threads of the screw rod (31) are matched with the external threads of the fan (32).

6. The telescopic hydraulic oil cylinder with the buffering and shock-absorbing structure as claimed in claim 1, wherein: the buffering and damping structure (20) is provided with a plurality of groups of outer walls located on the piston rod (12).

7. The telescopic hydraulic oil cylinder with the buffering and shock-absorbing structure as claimed in claim 1, wherein: the inner wall of the movable block (25) is matched with the outer wall of the fixed rod (23), and the inner wall of the movable ring (22) is matched with the outer wall of the piston rod (12).

8. A telescopic hydraulic cylinder with a buffering and shock-absorbing structure as claimed in claim 2, characterized in that: the inside of link (33) is provided with the recess, the top outer wall of fan (32) is provided with the lug, the inner wall of link (33) agrees with mutually with the outer wall of fan (32).