CN216241593U - A hydraulic device for construction machinery with buffer structure - Google Patents

Abstract

The utility model relates to the technical field of construction machinery, in particular to a hydraulic device with a buffer structure for construction machinery, comprising a hydraulic device casing, wherein a first buffer air cavity is opened inside the hydraulic device casing, The inside of the buffer air chamber is provided with a second buffer connecting rod, a buffer piston is installed below the second buffer connecting rod, and an air hole baffle is movably installed below the first buffer air chamber. An air intake hole is opened at the bottom, a connection support plate is fixedly installed above the second buffer connecting rod; a return spring is installed inside the air intake hole. The hydraulic device for construction machinery forms a buffer structure through the second buffer connecting rod, the first buffer air cavity, the buffer piston, the air outlet and the air inlet hole, so as to avoid the hydraulic device for construction machinery from being damaged due to excessive pressure, and reduce the need for the construction of the hydraulic device. The service life of the hydraulic device for machinery is improved, and the buffer structure is simple and the manufacturing cost is low, which is favorable for popularization.

Description

A hydraulic device for construction machinery with buffer structure

technical field

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

Background technique

Hydraulic press is a machine that uses liquid as working medium to transfer energy to realize various processes. In addition to forging and forming, hydraulic press can also be used for straightening, press-fitting, packaging, briquetting and platen, etc. Hydraulic presses include hydraulic presses and Hydraulic presses, which use water-based liquid as the working medium are called hydraulic presses, and those which use oil as the working medium are called hydraulic presses.

The existing hydraulic device for construction machinery needs to withstand a large pressure in the process of use, and there is no other buffer structure to share the pressure, which leads to the damage of the hydraulic device for construction machinery and reduces the service life. We propose a A hydraulic device with a buffer structure for construction machinery.

Utility model content

The purpose of the present utility model is to provide a hydraulic device for construction machinery with a buffer structure, so as to solve the problem that the existing hydraulic device for construction machinery needs to withstand a large pressure during the use process or instantaneously or continuously in the above-mentioned background technology, and at the same time There is no other buffer structure to share the pressure, which causes the hydraulic device for the construction machinery to be damaged and reduce the service life.

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

A hydraulic device housing, a first buffer air cavity is opened inside the hydraulic device housing, a second buffer connecting rod is passed through the inside of the first buffer air cavity, and a second buffer connecting rod is installed below the second buffer connecting rod A buffer piston, an air hole baffle plate is movably installed below the first buffer air cavity, an air intake hole is opened below the air hole baffle plate, and a connection support plate is fixedly installed above the second buffer connecting rod;

A return spring is installed inside the air inlet, a waterproof and breathable membrane is arranged below the return spring, and a dust-proof net is arranged below the waterproof and breathable membrane.

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

Preferably, the second buffer connecting rod can expand and contract inside the first buffer air cavity, and the second buffer connecting rod is fixedly connected with the buffer piston, and the diameter of the buffer piston is the same as the inner diameter of the first buffer air cavity. match.

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

The hydraulic push rod is installed on the right side of the second buffer connection rod, the right side of the hydraulic push rod is provided with a second buffer air chamber, and the inside of the second buffer air chamber is provided with a first buffer connection The connecting support plate is connected with the hydraulic push rod by welding, the first buffer connecting rod is connected with the connecting support plate by welding, and the structural dimensions inside the first buffer air chamber are the same as those inside the second buffer air chamber. match.

Preferably, the air inlet is further provided with:

A movable hole, which is opened on the left side of the air intake hole, and an air hole blocking block is movably installed inside the movable hole, and an adjusting screw rod is passed through the inside of the air hole blocking block, and the lower part of the adjusting screw rod is installed There is a connecting bearing, an adjusting motor is installed below the connecting bearing, and an air outlet hole is opened on the left side of the air hole blocking block.

Preferably, the adjusting motor is connected with the adjusting screw key, and the adjusting screw 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, and the adjusting screw rod is threadedly connected to the air hole blocking block, and the air hole blocking block is moved in the movable hole through the adjusting screw rod, and the shape and size of the air hole blocking block are the same as The shape and size of the inside of the movable hole are partially matched, the air outlet is communicated with the movable hole, and the length of the air hole blocking block is greater than the diameter of the air outlet.

Compared with the prior art, the utility model provides a hydraulic device for construction machinery with a buffer structure, which has the following beneficial effects: The piston, the air outlet and the air inlet constitute a buffer structure, which can prevent the hydraulic device for construction machinery from being damaged by excessive pressure, and reduce the service life of the hydraulic device for construction machinery. At the same time, the buffer structure is simple and the manufacturing cost is low, which is conducive to popularization .

1. The utility model constitutes a buffer structure through the second buffer connecting rod, the first buffer air cavity, the buffer piston, the air outlet and the air inlet, so as to avoid the hydraulic device of the construction machinery from being damaged due to excessive pressure, and to reduce the damage of the construction machinery. The service life of the hydraulic device is improved, and the buffer structure is simple and the manufacturing cost is low, which is conducive to popularization;

2. The utility model filters the gas entering the inside of the first buffer air chamber through a dust-proof net to prevent dust from entering the inside of the first buffer air chamber and causing damage to the components inside the first buffer air chamber, and at the same time, the waterproof and breathable membrane Prevent ash from entering the first buffer air chamber to cause corrosion to the components in the first buffer air chamber, and prolong the service life of the buffer structure;

3. The utility model adjusts the opening and closing of the air outlet and the size of the opening and closing by adjusting the motor, adjusting the screw rod and the air hole blocking block, and then controls the air output at the air outlet, thereby controlling the buffering efficiency of the buffer structure.

Description of drawings

Fig. 1 is the front view structure schematic diagram of the utility model;

Fig. 2 is the cross-sectional structure schematic diagram of the utility model;

Fig. 3 is the partial enlarged structural schematic diagram of A in Fig. 2 of the utility model;

FIG. 4 is a schematic diagram of the internal structure of the movable hole of the present invention.

In the figure: 1. Hydraulic device housing; 2. First buffer connecting rod; 3. Connecting support plate; 4. Hydraulic push rod; 5. Second buffer connecting rod; 6. First buffer air chamber; 7. Buffer piston ;8, air outlet; 9, adjusting motor; 10, second buffer air chamber; 11, air hole baffle; 12, air inlet; 13, waterproof and breathable membrane; 14, dustproof net; 15, return spring; 16, Adjusting screw; 17, connecting bearing; 18, air hole blocking block; 19, movable hole.

Detailed ways

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the implementations. example. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

As shown in Figures 1-3, a hydraulic device with a buffer structure for construction machinery includes: a hydraulic device housing 1, and a first buffer air cavity 6 is opened inside the hydraulic device housing 1, and the first buffer air The inside of the cavity 6 is provided with a second buffer connecting rod 5, and a buffer piston 7 is installed under the second buffer connecting rod 5; The connecting rod 5 is fixedly connected with the buffer piston 7, and the diameter of the buffer piston 7 is consistent with the inner diameter of the first buffer air chamber 6, and the air hole baffle 11 is movably installed below the first buffer air chamber 6; 11 realizes rotation inside the first buffer air cavity 6, the air hole baffle 11 is provided with an air intake hole 12 below, and the connection support plate 3 is fixedly installed above the second buffer connecting rod 5; the return spring 15 is installed in the inlet. Inside the air hole 12, and the diameter of the air hole baffle 11 is larger than that of the air intake hole 12, and the air hole baffle 11 is elastically connected with the air intake hole 12 through the return spring 15; through the second buffer connecting rod 5, the first The buffer air cavity 6, the buffer piston 7, the air outlet 8 and the air inlet hole 12 constitute a buffer structure, which prevents the hydraulic device for construction machinery from being damaged due to excessive pressure, and reduces the service life of the hydraulic device for construction machinery. The structure is simple, the manufacturing cost is low, and it is favorable for promotion. A waterproof and breathable membrane 13 is arranged below the reset spring 15, and a dust-proof net 14 is arranged below the waterproof and breathable membrane 13; The air is filtered to prevent dust from entering the first buffer air chamber 6 and causing damage to the components inside the first buffer air chamber 6. At the same time, the waterproof breathable membrane 13 prevents dust from entering the first buffer air chamber 6. The components in the air cavity 6 cause corrosion, prolonging the service life of the buffer structure.

As shown in Figures 2 and 4, a hydraulic device with a buffer structure for construction machinery includes: a hydraulic push rod 4, which is installed on the right side of the second buffer connecting rod 5, and the right side of the hydraulic push rod 4 is opened There is a second buffer air cavity 10 , the inside of the second buffer air cavity 10 is provided with a first buffer connecting rod 2 , the connecting support plate 3 is welded with the hydraulic push rod 4 , and the first buffer connecting rod 2 is welded with the connecting support plate 3 connection, the structural dimensions inside the first buffer air cavity 6 are consistent with the structural dimensions inside the second buffer air cavity 10; the movable hole 19 is opened on the left side of the air intake hole 12, and the inside of the movable hole 19 is movably installed with an air hole The blocking block 18, the inside of the air hole blocking block 18 is provided with an adjusting screw 16, a connecting bearing 17 is installed below the adjusting screw 16, and an adjusting motor 9 is installed below the connecting bearing 17; the adjusting motor 9 and the adjusting screw 16 key connected, and the adjusting screw 16 is movably connected with the movable hole 19 through the connecting bearing 17, and the left side of the air hole blocking block 18 is provided with an air outlet 8; The air hole blocking block 18 is threadedly connected, and the air hole blocking block 18 is moved in the movable hole 19 by adjusting the screw 16. At the same time, the shape and size of the air hole blocking block 18 is partially consistent with the shape and size inside the movable hole 19. The hole 19 is connected, and the length of the air hole blocking block 18 is greater than the diameter of the air outlet hole 8; by adjusting the motor 9, the adjusting screw 16 and the air hole blocking block 18, the opening and closing of the air outlet hole 8 and the size of the opening and closing are adjusted, and then the outlet hole 8 is controlled. The air output at the air hole 8 controls the buffering efficiency of the buffering structure.

Working principle: When using the hydraulic device for construction machinery with a buffer structure, first the hydraulic device for construction machinery works, injects oil into the oil cavity in the housing 1 of the hydraulic device, pushes the hydraulic push rod 4 to rise, and then pushes the connection. The support plate 3 and the equipment connected to the connection support plate 3, at the same time, the connection support plate 3 drives the first buffer connecting rod 2 and the second buffer connecting rod 5 to move upward, and then the buffer piston 7 is driven upward by the second buffer connecting rod 5 Move, under the action of air pressure, the gas pushes open the air hole baffle 11 from the air intake hole 12 into the first buffer air chamber 6, while the waterproof breathable membrane 13 and the dustproof net 14 block the dust and water, and then connect the support When the plate 3 stops rising, the air hole baffle 11 re-covers the air intake hole 12 under the elastic force of the return spring 15. Secondly, when the hydraulic push rod 4 moves down, the adjustment motor 9 is energized to drive the adjustment screw 16 to rotate. The air hole blocking block 18 is pushed downward in the movable hole 19 by the thread, and the air outlet hole 8 is opened. Similarly, the air outlet volume of the air outlet hole 8 is controlled, and the air intake plays a buffering role.

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

Claims (7)

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).

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