CN213332179U

CN213332179U - Stable hydraulic buffer

Info

Publication number: CN213332179U
Application number: CN202022346020.8U
Authority: CN
Inventors: 胡君
Original assignee: Changzhou Liyue Hydraulic Equipment Co ltd
Current assignee: Changzhou Liyue Hydraulic Equipment Co ltd
Priority date: 2020-10-20
Filing date: 2020-10-20
Publication date: 2021-06-01
Anticipated expiration: 2030-10-20

Abstract

The utility model relates to a stable form hydraulic buffer, including hydro-cylinder, urceolus and inner cylinder, the hydro-cylinder outside cover is equipped with the urceolus, a plurality of fin is installed to the hydro-cylinder outside and being located urceolus inside equidistance, a plurality of the fin outside equidistance has seted up a plurality of louvre, the inner cylinder is installed to hydro-cylinder inside center department, and sets up to the exocoel between hydro-cylinder and the inner cylinder, a plurality of backward flow hole and orifice have been seted up to the inner cylinder outside; when the hydraulic oil of inner cylinder and outer intracavity heaies up, the heat transmits for the fin through the hydro-cylinder this moment, and the cooling cycle water is added to this moment in the urceolus behind water intake nozzle and the external water piping connection, and cooling cycle water absorbs the heat with the fin contact, and increases area of contact through the louvre, and the water that carries the heat this moment is discharged through the faucet, and the constancy of temperature of hydraulic oil is guaranteed in continuous circulation, has consequently guaranteed that the buffering effect is stable when using.

Description

Stable hydraulic buffer

Technical Field

The utility model relates to a hydraulic buffer technical field especially relates to a stable form hydraulic buffer.

Background

The hydraulic buffer buffers and decelerates the object acting on the hydraulic buffer to stop by means of hydraulic damping, and plays a role in protecting to a certain extent; the safety buffer device is suitable for mechanical equipment such as hoisting transportation, elevators, metallurgy, harbor machinery, railway vehicles and the like, and is used for preventing the mechanism from being damaged due to hard collision in the working process.

Current hydraulic buffer is in frequent use, and the piston produces a large amount of heat transfer with the friction of inner cylinder inner wall and gives inside hydraulic oil, leads to inside hydraulic oil to heat up, and then leads to hydraulic buffer's buffering effect unstable, and the cooperation through single spring and hydraulic oil and orifice simultaneously can't guarantee when producing the impact force in the twinkling of an eye that buffering effect is good.

SUMMERY OF THE UTILITY MODEL

The utility model provides a problem lie in providing a stable form hydraulic buffer, solved current hydraulic buffer in frequent use, the piston produces a large amount of heat transfer for inside hydraulic oil with the friction of inner cylinder inner wall, leads to inside hydraulic oil to heat up, and then leads to hydraulic buffer's buffering effect unstable, can't guarantee the effectual technical problem of buffering when producing the impact force in the twinkling of an eye through the cooperation of single spring and hydraulic oil and orifice simultaneously.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a stable hydraulic buffer comprises an oil cylinder, an outer cylinder and an inner cylinder, wherein the outer cylinder is sleeved outside the oil cylinder, a plurality of radiating fins are arranged on the outer side of the oil cylinder and positioned inside the outer cylinder at equal intervals, and a plurality of radiating holes are formed in the outer sides of the plurality of radiating fins at equal intervals;

the inner cylinder is installed at the center of the inside of the oil cylinder, an outer cavity is formed between the oil cylinder and the inner cylinder, a plurality of backflow holes and throttling holes are formed in the outer side of the inner cylinder, a first spring is installed on the bottom side of the inner cylinder, a piston is installed at the top end of the first spring, a buffering shaft is installed at the top end of the piston, the top end of the buffering shaft penetrates through the inner cylinder and the oil cylinder, and a buffering seat is located above the inner cylinder.

Preferably, the top and the bottom of the outer side of the outer barrel are respectively provided with a water outlet nozzle and a water inlet nozzle, and the water outlet nozzle and the water inlet nozzle are respectively connected with the circulating pump through guide pipes.

Preferably, the outer diameter of the heat sink is smaller than the inner diameter of the outer cylinder.

Preferably, the return hole is located outside the top of the inner casing, and the orifice hole is located outside the bottom and middle of the inner casing.

Preferably, the hole diameter of the throttle hole is gradually reduced along the middle part of the inner cylinder to the bottom part, and the hole diameters of the throttle holes at the same height are the same.

Preferably, a plurality of connecting blocks are arranged on the periphery of the outer side of the buffer seat at equal intervals, movable rods are arranged on the bottom sides of the connecting blocks, the bottom ends of the movable rods penetrate through the top wall of the oil cylinder and are located in the outer cavity, check blocks are arranged in the outer cavity, and second springs are sleeved on the outer sides of the movable rods and between the buffer seat and the oil cylinder.

The utility model has the advantages that: when the temperature of the hydraulic oil in the inner cylinder and the outer cavity is raised, heat is transferred to the radiating fins through the oil cylinder, cooling circulating water is added into the outer cylinder after the water inlet nozzle is connected with an external water pipe, the cooling circulating water is in contact with the radiating fins to absorb the heat, the contact area is increased through the radiating holes, water carrying the heat is discharged through the water outlet nozzle at the moment, the constant temperature of the hydraulic oil is ensured through continuous circulation, and therefore the stable buffering effect is ensured when the hydraulic oil is used;

and when the hydraulic buffer receives the impact, the movable rods are driven by the connecting blocks around the buffer seat to move in the outer cavity to compress the second spring, the effect of auxiliary buffering is achieved through the elastic deformation of the second spring, and the good buffering effect is ensured when the impact force is generated instantly.

Drawings

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

FIG. 2 is a schematic view of the structure of the oil cylinder of the present invention;

fig. 3 is a cross-sectional view of the oil cylinder and the inner cylinder of the present invention.

Illustration of the drawings:

1. an oil cylinder; 2. an outer cylinder; 3. a heat sink; 4. heat dissipation holes; 5. a water outlet nozzle; 6. a water inlet nozzle; 7. an inner cylinder; 8. a buffer shaft; 9. a piston; 10. a first spring; 11. a buffer seat; 12. connecting blocks; 13. a movable rod; 14. a second spring; 15. a stopper; 16. a return orifice; 17. an orifice; 18. an outer cavity.

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 of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

Specific examples are given below.

Referring to fig. 1 to 3, a stable hydraulic buffer comprises an oil cylinder 1, an outer cylinder 2 and an inner cylinder 7, wherein the outer cylinder 2 is sleeved outside the oil cylinder 1, a plurality of radiating fins 3 are equidistantly arranged outside the oil cylinder 1 and inside the outer cylinder 2, and a plurality of radiating holes 4 are equidistantly formed outside the plurality of radiating fins 3;

the inner cylinder 7 is installed at the center of the interior of the oil cylinder 1, an outer cavity 18 is formed between the oil cylinder 1 and the inner cylinder 7, a plurality of backflow holes 16 and throttling holes 17 are formed in the outer side of the inner cylinder 7, a first spring 10 is installed on the bottom side of the inner cylinder 7, a piston 9 is installed on the top end of the first spring 10, a buffering shaft 8 is installed on the top end of the piston 9, the top end of the buffering shaft 8 penetrates through the inner cylinder 7 and the oil cylinder 1, and a buffering seat 11 is installed above the inner cylinder 7.

As an embodiment of the present invention, the water outlet nozzle 5 and the water inlet nozzle 6 are respectively installed at the top and the bottom of the outer side of the outer cylinder 2, and the water outlet nozzle 5 and the water inlet nozzle 6 are respectively connected with the circulating pump through the guide pipe, the outer diameter of the cooling fin 3 is smaller than the inner diameter of the outer cylinder 2, so as to ensure the rotation of the internal cooling water.

As an embodiment of the utility model, the backward flow hole 16 is located the inside casing 7 top outside, orifice 17 is located inside casing 7 bottom and middle part outside, the aperture of orifice 17 diminishes to the bottom along inside casing 7 middle part gradually, and the aperture of same high orifice 17 is the same, backward flow hole 16 is used for the hydraulic oil backward flow, when piston 9 moves down with the hydraulic oil in the inside casing 7 from the orifice 17 of inside casing 7 impress in the exocoel 18, and along with piston 9 descends, 17 internal diameters of orifice reduce gradually on the inside casing 7, make orifice 17 total area reduce and increase the throttle effect of oil, consequently, produce sufficient oil pressure and play the cushioning effect.

As an embodiment of the utility model, a plurality of connecting block 12 is installed to 11 outsides equidistance all around in the buffer base, movable rod 13 is all installed to connecting block 12 bottom side, 1 roof of hydro-cylinder is run through to movable rod 13 bottom, and be located exocoel 18 internally mounted and have dog 15, the movable rod 13 outside just is located and overlaps between buffer base 11 and the hydro-cylinder 1 and is equipped with second spring 14, drive movable rod 13 through buffer base 11 connecting block 12 all around and remove in outer chamber 18, compress second spring 14, elastic deformation through second spring 14 plays the effect of supplementary buffering.

When the temperature of the hydraulic oil in the inner cylinder 7 and the outer cavity 18 rises, heat is transferred to the radiating fins 3 through the oil cylinder 1, cooling circulating water is added into the outer cylinder 2 after the water inlet nozzle 6 is connected with an external water pipe, the cooling circulating water is contacted with the radiating fins 3 to absorb the heat, the contact area is increased through the radiating holes 4, water carrying the heat is discharged through the water outlet nozzle 5 at the moment, and the constant temperature of the hydraulic oil is ensured through continuous circulation, so that the stable buffering effect is ensured when the hydraulic oil is used;

when the hydraulic buffer receives impact, the movable rod 13 is driven to move in the outer cavity 18 through the connecting blocks 12 around the buffer seat 11 to compress the second spring 14, and the elastic deformation of the second spring 14 plays a role in auxiliary buffering, so that good buffering effect is ensured when impact force is generated instantly

The working principle is as follows: when the hydraulic buffer is impacted, the buffer shaft 8 drives the piston 9 to move downwards in the inner cylinder 7 to compress the first spring 10, meanwhile, the connecting blocks 12 around the buffer seat 11 drive the movable rod 13 to move in the outer cavity 18 to compress the second spring 14, the elastic deformation of the second spring 14 plays a role of auxiliary buffering, the piston 9 moves downwards to press the hydraulic oil in the inner cylinder 7 into the outer cavity 18 from the throttling hole 17 of the inner cylinder 7 for buffering the first impact, the inner diameter of the throttling hole 17 on the inner cylinder 7 is gradually reduced along with the descending of the piston 9, the total area of the throttling hole 17 is reduced to increase the throttling function of the oil, so that enough oil pressure is generated to play a role of buffering until the hydraulic buffer stops stably, the outer cavity 18 flows back to the upper part of the piston 9, when the piston 9 returns to the original position, the hydraulic oil flows into the inner cylinder 7 again, the water inlet nozzle 6 is connected with an external water pipe, and then cooling circulating water is added into the outer cylinder 2, the cooling circulation water is contacted with the radiating fins 3 to absorb heat, the contact area is increased through the radiating holes 4, the water carrying heat is discharged through the water outlet nozzle 5 at the moment, and the temperature of the hydraulic oil is ensured to be constant through continuous circulation.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The stable hydraulic buffer is characterized by comprising an oil cylinder (1), an outer cylinder (2) and an inner cylinder (7), wherein the outer cylinder (2) is sleeved outside the oil cylinder (1), a plurality of radiating fins (3) are arranged outside the oil cylinder (1) and inside the outer cylinder (2) at equal intervals, and a plurality of radiating holes (4) are formed in the outer sides of the radiating fins (3) at equal intervals;

the utility model discloses a damping device, including hydro-cylinder (1), hydro-cylinder (1) inside center department installs inner casing (7), and sets up to exocoel (18) between hydro-cylinder (1) and inner casing (7), a plurality of return-flow hole (16) and orifice (17) have been seted up in inner casing (7) outside, first spring (10) are installed to inner casing (7) bottom side, piston (9) are installed on first spring (10) top, buffering axle (8) are installed on piston (9) top, inner casing (7) and hydro-cylinder (1) are run through on buffering axle (8) top, and are located inner casing (7) top and install buffer seat (11).

2. The stable hydraulic buffer of claim 1, wherein the outer top and bottom of the outer tube (2) are respectively provided with a water outlet nozzle (5) and a water inlet nozzle (6), and the water outlet nozzle (5) and the water inlet nozzle (6) are respectively connected with the circulating pump through a conduit.

3. A stabilized hydraulic shock absorber according to claim 1, wherein the outer diameter of the fins (3) is smaller than the inner diameter of the outer cylinder (2).

4. A stabilized hydraulic shock absorber according to claim 1, wherein the return orifice (16) is located outside the top of the inner cylinder (7) and the orifice (17) is located outside the bottom and middle of the inner cylinder (7).

5. A stabilized hydraulic shock absorber according to claim 4, wherein the orifice (17) has a diameter which decreases from the middle to the bottom of the inner cylinder (7), and the orifices (17) have the same diameter at the same height.

6. The stable hydraulic buffer according to claim 1, wherein a plurality of connecting blocks (12) are installed around the outer side of the buffer base (11) at equal intervals, each connecting block (12) is installed with a movable rod (13) at the bottom side, the bottom end of the movable rod (13) penetrates through the top wall of the oil cylinder (1), a stopper (15) is installed inside the outer cavity (18), and a second spring (14) is sleeved outside the movable rod (13) and between the buffer base (11) and the oil cylinder (1).