CN214837507U

CN214837507U - Buffering hydraulic cylinder

Info

Publication number: CN214837507U
Application number: CN202121560573.1U
Authority: CN
Inventors: 唐国红
Original assignee: Changzhou Aosailin Hydraulic And Pneumatic Components Co ltd
Current assignee: Changzhou Aosailin Hydraulic And Pneumatic Components Co ltd
Priority date: 2021-07-09
Filing date: 2021-07-09
Publication date: 2021-11-23
Anticipated expiration: 2031-07-09

Abstract

The utility model discloses a buffering pneumatic cylinder, its technical scheme main points are: the hydraulic cylinder comprises a hydraulic cylinder body, wherein the hydraulic cylinder body comprises a base, a cylinder body, a first output rod and a second output rod, a top plate is connected to the second output rod in a sliding mode, a limiting plate is connected to the top end of the second output rod in a threaded mode, and two waist-shaped adjusting grooves are formed in two sides of the base respectively; the two sides of the base are respectively in threaded connection with a sleeve, the bottom of an inner cavity of the sleeve is fixedly connected with a spring, a piston block is connected in the sleeve in a sliding manner, the bottom of the piston block is in contact connection with the top end of the spring, the top of the piston block is fixedly connected with a mandril, and the mandril is in sliding connection with a top cover of the sleeve; the problem of among the prior art pneumatic cylinder not set up the buffering subassembly, when the last festival of pneumatic cylinder output is retracted, strike with the cylinder body easily, lead to the impaired of pneumatic cylinder inner structure is solved.

Description

Buffering hydraulic cylinder

Technical Field

The utility model relates to a pneumatic cylinder field, in particular to buffering pneumatic 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 movement, it can remove speed-reducing device, and has no transmission gap, and its movement is stable, so that it can be extensively used in hydraulic systems of various machines. The damping device and the exhaust device are determined according to specific application occasions, and other devices are necessary.

The patent can refer to chinese patent with publication number CN102322457B, which discloses a telescopic rotary hydraulic cylinder, which includes a cylinder body, a piston and a piston rod, the piston rod is disposed on both sides of the piston, a rotary guiding device is disposed between the piston rod and the cylinder body on at least one side of the piston, the rotary guiding device includes a spiral guiding groove disposed on the piston rod, a limit plug screw is fixed on the inner wall of the cylinder body in cooperation with the spiral guiding groove, and the limit plug screw is clamped in the spiral guiding groove and can slide along the spiral guiding groove. Above-mentioned flexible rotation type pneumatic cylinder adds spiral guide way and spacer pin of mutually supporting between piston rod and cylinder body, and when the piston rod of pneumatic cylinder was making rectilinear motion, the spacer pin of card in the spiral guide way will order about the piston rod and take place to rotate simultaneously to realize the piston rod and accomplish rotatory action when being rectilinear motion.

The above patent is not only simple in structure, but also reliable in action; and the additional mechanism required for completing the composite action is omitted, the cost is reduced, the economic benefit is improved, but the method also has the defects of: it does not set up buffering subassembly, when the last festival of pneumatic cylinder output was retracted, takes place the striking with the cylinder body easily, leads to pneumatic cylinder inner structure impaired.

SUMMERY OF THE UTILITY MODEL

To the problem mentioned in the background art, the utility model aims at providing a buffer hydraulic cylinder to solve the problem mentioned in the background art.

The above technical purpose of the present invention can be achieved by the following technical solutions:

a buffer hydraulic cylinder comprises a hydraulic cylinder body, wherein the hydraulic cylinder body comprises a base, a cylinder body, a first output rod and a second output rod, a top plate is connected onto the second output rod in a sliding mode, a limiting plate is connected to the top end of the second output rod in a threaded mode, and two waist-shaped adjusting grooves are formed in two sides of the base respectively;

the both sides of base threaded connection respectively have the sleeve, telescopic inner chamber bottom fixedly connected with spring, the sliding is connected with the piston piece in the sleeve, the bottom of piston piece with the top contact of spring is connected, the top fixedly connected with ejector pin of piston piece, the ejector pin with telescopic top cap sliding connection, two the top of ejector pin is fixed connection respectively in the bottom of roof both sides.

According to the buffering hydraulic cylinder, the sleeve, the spring, the top plate, the limiting plate and the ejector rod are arranged, so that the top plate can effectively support the second output rod, a good buffering effect is achieved during retraction, the second output rod and a support are effectively prevented from impacting a cylinder body during retraction, and the problem that the internal structure of the hydraulic cylinder is damaged due to the fact that a buffering assembly is not arranged in the hydraulic cylinder and the hydraulic cylinder is easily impacted with the cylinder body during the last retraction of the output end of the hydraulic cylinder in the prior art is solved;

this buffering pneumatic cylinder through the setting of waist type adjustment tank, can conveniently adjust the mounted position of pneumatic cylinder body, has improved the installation convenience and the controllability of pneumatic cylinder body, and then has reduced the installation degree of difficulty.

Preferably, the bottom of the base is provided with an installation plate, the base is fixedly connected with the installation plate through a plurality of first bolts, and the first bolts are connected with the inner wall of the waist-shaped adjusting groove in a sliding manner; the mounting plate can be conveniently fixed and detached through the first bolt fixed connection.

Preferably, a non-return gasket is arranged at the joint of the first bolt and the base, and the top plate is fixedly connected with the ejector rod through a second bolt; can make things convenient for the dismouting of roof through second bolt fixed connection, and then make things convenient for telescopic dismouting, through the setting of non return gasket, can prevent that first bolt gyration is not hard up.

Preferably, the bottom section of the sleeve is provided with an air outlet; through the setting of venthole, can make sleeve inner chamber circulation of air, make the piston piece can be in sleeve inner chamber comparatively smooth and easy that slides.

Preferably, a rubber cushion pad is fixedly connected to the top of the cylinder body, and the rubber cushion pad is connected with the first output rod in a sliding manner; through the setting of rubber buffer pad, play protection cushioning effect to the roof.

Preferably, both sides of the cylinder body are fixedly connected with stabilizing plates respectively, and the stabilizing plates are connected with the sleeves in a sliding manner; through the setting of firm board, can support two sleeves, improve telescopic stability.

Preferably, four end surfaces of the cylinder body are respectively and fixedly connected with a reinforcing rib plate, and the bottom end of the reinforcing rib plate is fixedly connected with the top of the base; through the setting of the reinforcing rib plate, the lateral supporting force of the cylinder body can be effectively improved, and the structural stability of the cylinder body is further ensured.

To sum up, the utility model discloses mainly have following beneficial effect:

the first buffer hydraulic cylinder has the advantages that the top plate can effectively support the second output rod through the arrangement of the sleeve, the spring, the top plate, the limiting plate and the ejector rod, a good buffer effect is achieved when the second output rod retracts, the second output rod and a support are effectively prevented from impacting a cylinder body when retracting, and the problem that the hydraulic cylinder is easy to impact the cylinder body when the last section of the output end of the hydraulic cylinder retracts to damage the internal structure of the hydraulic cylinder due to the fact that a buffer assembly is not arranged in the hydraulic cylinder in the prior art is solved;

second, this buffering pneumatic cylinder through the setting of waist type adjustment tank, can conveniently adjust the mounted position of pneumatic cylinder body, has improved the installation convenience and the controllability of pneumatic cylinder body, and then has reduced the installation degree of difficulty.

Drawings

Fig. 1 is one of the schematic structural diagrams of the present invention;

fig. 2 is a second schematic structural diagram of the present invention;

fig. 3 is a partial structural sectional view of the present invention;

FIG. 4 is an enlarged view of the structure A of FIG. 1;

fig. 5 is a schematic view of the structure of the spring of the present invention.

Reference numerals: 1. a hydraulic cylinder body; 2. a base; 3. a cylinder body; 4. a first output rod; 5. a second output rod; 6. a top plate; 7. a limiting plate; 8. a waist-shaped adjusting groove; 9. a sleeve; 10. a spring; 11. a piston block; 12. a top rod; 13. mounting a plate; 14. a first bolt; 15. a non-return gasket; 16. a second bolt; 17. an air outlet; 18. a rubber cushion pad; 19. a stabilizing plate; 20. and a reinforcing rib plate.

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.

Examples

Referring to fig. 1-5, a buffering hydraulic cylinder comprises a hydraulic cylinder body 1, wherein the hydraulic cylinder body 1 comprises a base 2, a cylinder body 3, a first output rod 4 and a second output rod 5, the second output rod 5 is slidably connected with a top plate 6, the top end of the second output rod 5 is in threaded connection with a limiting plate 7, and two waist-shaped adjusting grooves 8 are respectively formed in two sides of the base 2;

base 2's both sides respectively threaded connection have sleeve 9, and sleeve 9's inner chamber bottom fixedly connected with spring 10, sliding connection is connected with piston block 11 in the sleeve 9, and the bottom of piston block 11 is connected with the top contact of spring 10, and the top fixedly connected with ejector pin 12 of piston block 11, ejector pin 12 and sleeve 9's top cap sliding connection, the top of two ejector pins 12 is the bottom of fixed connection in 6 both sides of roof respectively.

Referring to fig. 1 and 4, a mounting plate 13 is arranged at the bottom of the base 2, the base 2 and the mounting plate 13 are fixedly connected through a plurality of first bolts 14, and the first bolts 14 are slidably connected with the inner wall of the waist-shaped adjusting groove 8; the fixing and the dismounting of the mounting plate 13 can be facilitated through the fixed connection of the first bolt 14.

Referring to fig. 1 and 4, a check gasket 15 is arranged at the joint of the first bolt 14 and the base 2, and the top plate 6 and the ejector rod 12 are fixedly connected through a second bolt 16; through second bolt 16 fixed connection can make things convenient for the dismouting of roof 6, and then make things convenient for the dismouting of sleeve 9, through the setting of non return gasket 15, can prevent that first bolt 14 gyration is not hard up.

Referring to fig. 4, the bottom section of the sleeve 9 is provided with an air outlet 17; through the arrangement of the air outlet 17, the air in the inner cavity of the sleeve 9 can circulate, so that the piston block 11 can slide in the inner cavity of the sleeve 9 smoothly.

Referring to fig. 2, a rubber cushion 18 is fixedly connected to the top of the cylinder 3, and the rubber cushion 18 is slidably connected to the first output rod 4; the top plate 6 is protected and cushioned by the arrangement of the rubber cushion pad 18.

Referring to fig. 2, two sides of the cylinder 3 are fixedly connected with stabilizing plates 19 respectively, and the stabilizing plates 19 are slidably connected with the sleeve 9; through the setting of firm board 19, can support two sleeves 9, improve sleeve 9's stability.

Referring to fig. 1, four end surfaces of the cylinder 3 are fixedly connected with reinforcing ribs 20 respectively, and the bottom ends of the reinforcing ribs 20 are fixedly connected with the top of the base 2; through the setting of reinforcing floor 20, can effectively improve the side direction holding power of cylinder body 3, and then ensured the structural stability of cylinder body 3.

The use principle and the advantages are as follows:

when the buffering hydraulic cylinder is used, the first output rod 4 continuously rises to drive the top plate 6 and the ejector rod 12 to rise upwards, the ejector rod 12 slides in the sleeve 9, when the first output rod 4 and the second output rod 5 fall back, the second output rod 5 firstly falls back into the first output rod 4, then the first output rod 4 continuously falls back, the top end of the first output rod 4 is separated from the top plate 6, the ejector rod 12 slides in the sleeve 9 to be contacted with the top of the spring 10, when the first output rod 4 continuously drives the second output rod 5 to fall back, the limiting plate 7 at the top end of the second output rod 5 drives the top plate 6 to fall downwards, the top plate 6 drives the ejector rod 12 to extrude the spring 10, the spring 10 generates upward thrust to the piston block 11 and the ejector rod 12 while deforming in the sleeve 9, further, the second output rod 5 and a heavy object supported by the second output rod 5 can be effectively buffered, and the collision between the second output rod 5 and the heavy object supported by the cylinder body 3 is avoided, the purpose of protecting the internal structure of the cylinder body 3 is achieved.

According to the buffering hydraulic cylinder, the sleeve 9, the spring 10, the top plate 6, the limiting plate 7 and the ejector rod 12 are arranged, so that the top plate 6 can effectively support the second output rod 5, a good buffering effect is achieved when the second output rod retracts, the second output rod 5 and a support are effectively prevented from impacting the cylinder body 3 when retracting, and the problem that the internal structure of the hydraulic cylinder is damaged due to the fact that the hydraulic cylinder is not provided with a buffering assembly and is easy to impact the cylinder body 3 when the last section of the output end of the hydraulic cylinder retracts in the prior art is solved;

this buffering pneumatic cylinder through the setting of waist type adjustment tank 8, can conveniently adjust the mounted position of pneumatic cylinder body 1, has improved the installation convenience and the controllability of pneumatic cylinder body 1, and then has reduced the installation degree of difficulty.

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. A damping hydraulic cylinder is characterized in that: the hydraulic cylinder comprises a hydraulic cylinder body (1), wherein the hydraulic cylinder body (1) comprises a base (2), a cylinder body (3), a first output rod (4) and a second output rod (5), the second output rod (5) is connected with a top plate (6) in a sliding mode, the top end of the second output rod (5) is connected with a limiting plate (7) in a threaded mode, and two waist-shaped adjusting grooves (8) are formed in two sides of the base (2) respectively;

the both sides of base (2) threaded connection respectively have sleeve (9), the inner chamber bottom fixedly connected with spring (10) of sleeve (9), sleeve (9) internal slipping is connected with piston block (11), the bottom of piston block (11) with the top contact of spring (10) is connected, the top fixedly connected with ejector pin (12) of piston block (11), ejector pin (12) with the top cap sliding connection of sleeve (9), two the top of ejector pin (12) is fixed connection respectively the bottom of roof (6) both sides.

2. A damping cylinder according to claim 1, characterized in that: the bottom of base (2) is provided with mounting panel (13), base (2) with mounting panel (13) are through a plurality of first bolt (14) fixed connection, first bolt (14) with the inner wall of waist type adjustment tank (8) slides and is connected.

3. A damping cylinder according to claim 2, characterized in that: the connecting part of the first bolt (14) and the base (2) is provided with a check gasket (15), and the top plate (6) and the ejector rod (12) are fixedly connected through a second bolt (16).

4. A damping cylinder according to claim 1, characterized in that: the bottom section of the sleeve (9) is provided with an air outlet (17).

5. A damping cylinder according to claim 1, characterized in that: the top of the cylinder body (3) is fixedly connected with a rubber cushion pad (18), and the rubber cushion pad (18) is connected with the first output rod (4) in a sliding mode.

6. A damping cylinder according to claim 1, characterized in that: the two sides of the cylinder body (3) are fixedly connected with stabilizing plates (19) respectively, and the stabilizing plates (19) are connected with the sleeve (9) in a sliding mode.

7. A damping cylinder according to claim 1, characterized in that: the four end faces of the cylinder body (3) are respectively fixedly connected with a reinforcing rib plate (20), and the bottom end of the reinforcing rib plate (20) is fixedly connected with the top of the base (2).