CN216241593U

CN216241593U - Hydraulic device with buffer structure for engineering machinery

Info

Publication number: CN216241593U
Application number: CN202122785514.0U
Authority: CN
Inventors: 王远飞; 朱佳庆; 张�杰
Original assignee: Changan University
Current assignee: Changan University
Priority date: 2021-11-14
Filing date: 2021-11-14
Publication date: 2022-04-08
Anticipated expiration: 2031-11-14

Abstract

The utility model relates to the technical field of engineering machinery, in particular to a hydraulic device with a buffer structure for engineering machinery, which comprises a hydraulic device shell, wherein a first buffer air cavity is formed in the hydraulic device shell, a second buffer connecting rod penetrates through the first buffer air cavity, a buffer piston is arranged below the second buffer connecting rod, an air hole baffle is movably arranged below the first buffer air cavity, an air inlet hole is formed below the air hole baffle, and a connecting supporting plate is fixedly arranged above the second buffer connecting rod; a return spring installed inside the air intake hole. This hydraulic means for engineering machine tool constitutes buffer structure through second buffering connecting rod, first buffering air cavity, buffer piston, venthole and inlet port, avoids the too big and damage of pressure that this hydraulic means for engineering machine tool received, reduces this hydraulic means for engineering machine tool's life, and this buffer structure is simple simultaneously, and low in manufacturing cost does benefit to the popularization.

Description

Hydraulic device with buffer structure for engineering machinery

Technical Field

The utility model relates to the technical field of engineering machinery, in particular to a hydraulic device with a buffer structure for engineering machinery.

Background

The hydraulic press is a machine which takes liquid as a working medium and is used for transferring energy to realize various processes, the hydraulic press can be used for straightening, press fitting, packing, briquetting, pressing plates and the like besides forging and forming, and comprises a hydraulic press and an oil press, wherein the hydraulic press takes water-based liquid as the working medium and is called the hydraulic press, and the oil as the working medium.

The hydraulic device for the engineering machinery is damaged and the service life is shortened due to the fact that the existing hydraulic device for the engineering machinery needs to bear larger pressure instantaneously or continuously in the using process, and no other buffer structures share the received pressure, and the hydraulic device for the engineering machinery is provided with the buffer structures.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a hydraulic device with a buffer structure for engineering machinery, which aims to solve the problems that the existing hydraulic device for engineering machinery needs to bear larger pressure instantaneously or continuously during the use process, and no other buffer structure shares the pressure with the existing hydraulic device for engineering machinery, so that the hydraulic device for engineering machinery is damaged and the service life is shortened.

In order to achieve the purpose, the utility model provides the following technical scheme: a hydraulic device for construction machinery with a cushion structure, comprising:

the hydraulic device comprises a hydraulic device shell, a first buffer air cavity is formed in the hydraulic device shell, a second buffer connecting rod penetrates through the first buffer air cavity, a buffer piston is arranged below the second buffer connecting rod, an air hole baffle is movably arranged below the first buffer air cavity, an air inlet hole is formed below the air hole baffle, and a connecting support plate is fixedly arranged above the second buffer connecting rod;

the air inlet structure comprises a return spring, a waterproof breathable film and a dust screen, wherein the return spring is installed inside the air inlet hole, the waterproof breathable film is arranged below the return spring, and the dust screen is arranged below the waterproof breathable film.

Preferably, the air hole baffle plate rotates inside the first buffer air cavity, the diameter size of the air hole baffle plate is larger than that of the air inlet hole, and the air hole baffle plate is elastically connected with the air inlet hole through a return spring.

Preferably, the second buffer connecting rod extends and retracts inside the first buffer air cavity, the second buffer connecting rod is fixedly connected with the buffer piston, and the diameter of the buffer piston is matched with the diameter of the inside of the first buffer air cavity.

Preferably, the second buffer connecting rod is further provided with:

the hydraulic push rod is installed on the right side of the second buffer connecting rod, a second buffer air cavity is formed in the right side of the hydraulic push rod, a first buffer connecting rod penetrates through the second buffer air cavity, the connecting support plate is connected with the hydraulic push rod in a welded mode, the first buffer connecting rod is connected with the connecting support plate in a welded mode, and the structural size of the interior of the first buffer air cavity is identical to that of the interior of the second buffer air cavity.

Preferably, the air inlet hole is further provided with:

the movable hole is formed in the left side of the air inlet hole, an air hole blocking block is movably mounted inside the movable hole, an adjusting screw rod is arranged inside the air hole blocking block in a penetrating mode, a connecting bearing is mounted below the adjusting screw rod, an adjusting motor is mounted below the connecting bearing, and an air outlet hole is formed in the left side of the air hole blocking block.

Preferably, the adjusting motor is in key connection with the adjusting screw rod, and the adjusting screw rod is movably connected with the movable hole through the connecting bearing.

Preferably, the adjusting screw rod penetrates through the inside of the air hole blocking block, the adjusting screw rod is in threaded connection with the air hole blocking block, the air hole blocking block moves in the movable hole through the adjusting screw rod, meanwhile, the shape and the size of the air hole blocking block are matched with those of the inside of the movable hole partially, the air outlet hole is communicated with the movable hole, and the length of the air hole blocking block is larger than the diameter of the air outlet hole.

Compared with the prior art, the utility model provides a hydraulic device with a buffer structure for engineering machinery, which has the following beneficial effects: this hydraulic means for engineering machine tool constitutes buffer structure through second buffering connecting rod, first buffering air cavity, buffer piston, venthole and inlet port, avoids the too big and damage of pressure that this hydraulic means for engineering machine tool received, reduces this hydraulic means for engineering machine tool's life, and this buffer structure is simple simultaneously, and low in manufacturing cost does benefit to the popularization.

1. The hydraulic device for the engineering machinery is prevented from being damaged due to overlarge pressure applied to the hydraulic device for the engineering machinery by the buffer structure consisting of the second buffer connecting rod, the first buffer air cavity, the buffer piston, the air outlet hole and the air inlet hole, the service life of the hydraulic device for the engineering machinery is shortened, and meanwhile, the buffer structure is simple, low in manufacturing cost and beneficial to popularization;

2. according to the utility model, the dust screen is used for filtering the gas entering the first buffer gas cavity, so that dust is prevented from entering the first buffer gas cavity to damage components in the first buffer gas cavity, meanwhile, the waterproof breathable film is used for preventing the dust from entering the first buffer gas cavity to corrode the components in the first buffer gas cavity, and the service life of the buffer structure is prolonged;

3. the opening and closing of the air outlet hole and the opening and closing size are adjusted through the adjusting motor, the adjusting screw rod and the air hole blocking block, so that the air outlet quantity at the air outlet hole is controlled, and the buffering efficiency of the buffering structure is controlled.

Drawings

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

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

FIG. 3 is an enlarged view of a portion of FIG. 2;

fig. 4 is a schematic view of the internal structure of the movable hole of the present invention.

In the figure: 1. a hydraulic device housing; 2. a first buffer connecting rod; 3. connecting the supporting plate; 4. a hydraulic push rod; 5. a second buffer connecting rod; 6. a first buffer air cavity; 7. a cushion piston; 8. an air outlet; 9. adjusting the motor; 10. a second buffer air cavity; 11. an air hole baffle; 12. an air inlet; 13. a waterproof breathable film; 14. a dust screen; 15. a return spring; 16. adjusting the screw rod; 17. connecting a bearing; 18. blocking air holes; 19. and (4) a movable hole.

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.

As shown in fig. 1 to 3, a hydraulic apparatus for construction machinery having a cushion structure includes: the hydraulic device comprises a hydraulic device shell 1, wherein a first buffer air cavity 6 is formed in the hydraulic device shell 1, a second buffer connecting rod 5 penetrates through the first buffer air cavity 6, and a buffer piston 7 is arranged below the second buffer connecting rod 5; the second buffer connecting rod 5 is stretched in the first buffer air cavity 6, the second buffer connecting rod 5 is fixedly connected with the buffer piston 7, the diameter size of the buffer piston 7 is matched with the inner diameter size of the first buffer air cavity 6, and an air hole baffle plate 11 is movably arranged below the first buffer air cavity 6; the air hole baffle 11 rotates in the first buffer air cavity 6, an air inlet hole 12 is formed below the air hole baffle 11, and the connecting support plate 3 is fixedly arranged above the second buffer connecting rod 5; the return spring 15 is arranged inside the air inlet hole 12, the diameter size of the air hole baffle plate 11 is larger than that of the air inlet hole 12, and the air hole baffle plate 11 is elastically connected with the air inlet hole 12 through the return spring 15; a buffer structure is formed by the second buffer connecting rod 5, the first buffer air cavity 6, the buffer piston 7, the air outlet hole 8 and the air inlet hole 12, so that the hydraulic device for the engineering machinery is prevented from being damaged due to overlarge pressure, the service life of the hydraulic device for the engineering machinery is shortened, meanwhile, the buffer structure is simple, the manufacturing cost is low, the popularization is facilitated, the waterproof breathable film 13 is arranged below the reset spring 15, and the dustproof net 14 is arranged below the waterproof breathable film 13; the gas entering the first buffer air cavity 6 is filtered through the dust screen 14, the part inside the first buffer air cavity 6 is prevented from being damaged by the dust entering the first buffer air cavity 6, and meanwhile, the waterproof breathable film 13 prevents the dust from entering the first buffer air cavity 6 to corrode the part inside the first buffer air cavity 6, so that the service life of the buffer structure is prolonged.

As shown in fig. 2 and 4, a hydraulic device for construction machinery having a cushion structure includes: the hydraulic push rod 4 is installed on the right side of the second buffer connecting rod 5, a second buffer air cavity 10 is formed in the right side of the hydraulic push rod 4, the first buffer connecting rod 2 penetrates through the second buffer air cavity 10, the connecting support plate 3 is connected with the hydraulic push rod 4 in a welding mode, the first buffer connecting rod 2 is connected with the connecting support plate 3 in a welding mode, and the structural size of the interior of the first buffer air cavity 6 is matched with that of the interior of the second buffer air cavity 10; the movable hole 19 is formed in the left side of the air inlet 12, an air hole blocking block 18 is movably mounted inside the movable hole 19, an adjusting screw rod 16 penetrates through the inside of the air hole blocking block 18, a connecting bearing 17 is mounted below the adjusting screw rod 16, and an adjusting motor 9 is mounted below the connecting bearing 17; the adjusting motor 9 is in key connection with an adjusting screw rod 16, the adjusting screw rod 16 is movably connected with a movable hole 19 through a connecting bearing 17, and the left side of the air hole blocking block 18 is provided with an air outlet hole 8; the adjusting screw rod 16 penetrates through the inside of the air hole blocking block 18, the adjusting screw rod 16 is in threaded connection with the air hole blocking block 18, the air hole blocking block 18 moves in the movable hole 19 through the adjusting screw rod 16, meanwhile, the shape and the size of the air hole blocking block 18 are partially matched with those of the inside of the movable hole 19, the air outlet hole 8 is communicated with the movable hole 19, and the length of the air hole blocking block 18 is larger than the diameter of the air outlet hole 8; the opening and closing of the air outlet hole 8 and the opening and closing size are adjusted through the adjusting motor 9, the adjusting screw rod 16 and the air hole blocking block 18, and then the air outlet quantity at the air outlet hole 8 is controlled, so that the buffering efficiency of the buffering structure is controlled.

The working principle is as follows: when the hydraulic device with the buffer structure for the engineering machinery is used, firstly, the hydraulic device for the engineering machinery works, oil is injected into an oil cavity in a shell 1 of the hydraulic device, a hydraulic push rod 4 is pushed to rise, and then, a connection support plate 3 and equipment connected to the connection support plate 3 are pushed, meanwhile, the connection support plate 3 drives a first buffer connecting rod 2 and a second buffer connecting rod 5 to move upwards, then a buffer piston 7 is driven by the second buffer connecting rod 5 to move upwards, under the action of air pressure, air pushes an air hole baffle plate 11 to enter a first buffer air cavity 6 from an air hole 12, meanwhile, a waterproof breathable film 13 and a dustproof net 14 block dust and water outside, secondly, when the connection support plate 3 stops rising, the air hole baffle plate 11 covers the air hole 12 again under the pulling of the elastic force of a reset spring 15, and secondly, when the hydraulic push rod 4 moves downwards, an adjusting motor 9 works to drive an adjusting screw rod 16 to rotate, the air hole plugging block 18 is pushed by the screw thread to move downwards in the movable hole 19, the air outlet hole 8 is opened, the air outlet quantity of the air outlet hole 8 is controlled in the same way, and the air inlet has a buffering effect.

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 utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a hydraulic means for engineering machine tool with buffer structure which characterized in that includes:

the hydraulic device comprises a hydraulic device shell (1), wherein a first buffer air cavity (6) is formed in the hydraulic device shell (1), a second buffer connecting rod (5) penetrates through the first buffer air cavity (6), a buffer piston (7) is arranged below the second buffer connecting rod (5), an air hole baffle (11) is movably arranged below the first buffer air cavity (6), an air inlet hole (12) is formed below the air hole baffle (11), and a connecting support plate (3) is fixedly arranged above the second buffer connecting rod (5);

the air inlet structure comprises a return spring (15) which is installed inside the air inlet hole (12), a waterproof breathable film (13) is arranged below the return spring (15), and a dustproof net (14) is arranged below the waterproof breathable film (13).

2. The hydraulic apparatus for construction machinery having a buffering structure as claimed in claim 1, wherein the air hole shutter (11) is implemented to rotate inside the first buffer air chamber (6), and a diameter size of the air hole shutter (11) is larger than a diameter size of the air inlet hole (12), and the air hole shutter (11) is elastically connected to the air inlet hole (12) by a return spring (15).

3. The hydraulic apparatus for construction machinery having a buffering structure according to claim 1, wherein the second buffering connecting rod (5) is extended and contracted inside the first buffering air chamber (6), and the second buffering connecting rod (5) is fixedly connected to the buffering piston (7), and the diameter of the buffering piston (7) is identical to the inner diameter of the first buffering air chamber (6).

4. The hydraulic device with a buffer structure for construction machinery according to claim 1, wherein the second buffer connecting rod (5) is further provided with:

the hydraulic push rod (4) is installed on the right side of the second buffer connecting rod (5), a second buffer air cavity (10) is formed in the right side of the hydraulic push rod (4), a first buffer connecting rod (2) penetrates through the inside of the second buffer air cavity (10), the connecting support plate (3) is connected with the hydraulic push rod (4) in a welded mode, the first buffer connecting rod (2) is connected with the connecting support plate (3) in a welded mode, and the structural size inside the first buffer air cavity (6) is identical with the structural size inside the second buffer air cavity (10).

5. The hydraulic apparatus for construction machinery having a shock-absorbing structure as set forth in claim 1, wherein said air intake hole (12) is further provided with:

the movable hole (19), it sets up the left side of inlet port (12), the inside movable mounting of movable hole (19) has air pocket sprue (18), accommodate the lead screw (16) are worn to be equipped with in the inside of air pocket sprue (18), connect bearing (17) are installed to the below of accommodate the lead screw (16), accommodate the motor (9) are installed to the below of connecting bearing (17), venthole (8) have been seted up in the left side of air pocket sprue (18).

6. The hydraulic device with the buffer structure for the engineering machinery is characterized in that the adjusting motor (9) is in key connection with the adjusting screw rod (16), and the adjusting screw rod (16) is movably connected with the movable hole (19) through a connecting bearing (17).

7. The hydraulic device with the buffer structure for the engineering machinery, according to claim 5, is characterized in that the adjusting screw rod (16) penetrates through the inside of the air hole block (18), the adjusting screw rod (16) is in threaded connection with the air hole block (18), the air hole block (18) moves in the movable hole (19) through the adjusting screw rod (16), meanwhile, the shape and the size of the air hole block (18) are partially matched with those of the inside of the movable hole (19), the air outlet hole (8) is communicated with the movable hole (19), and the length of the air hole block (18) is larger than the diameter of the air outlet hole (8).