CN217055506U - Breathing type loader air booster pump - Google Patents

Abstract

The utility model discloses a formula of respiration loader air booster pump belongs to engineering machine tool field, this structure includes the cylinder block, connect the lid, hydraulic cylinder body, piston rod, air piston and hydraulic piston, cylinder block and hydraulic cylinder body are connected respectively in the both sides of connecting the lid, be provided with air piston in the cylinder block, be provided with hydraulic piston in the hydraulic cylinder body, piston rod slides and passes the middle part of connecting the lid, air piston and hydraulic piston are connected respectively to piston rod's both ends, it is provided with the mounting hole to connect to cover, the one end intercommunication cylinder block of mounting hole, communicating pipe is connected to the other end of mounting hole, install the gasbag on communicating pipe. Through this structure with the process of breathing in, exhausting of air booster pump the closure, avoid dust impurity to get into the pump body, cause the sealing member fish tail, brake oil to receive the pollution scheduling problem, in order to guarantee that the gasbag can normally work, set up check valve and the relief valve of taking the filter screen on communicating pipe, avoid because of gas pressure is too high or low excessively making the gasbag damage, reduced the fault rate.

Description

Breathing type loader air booster pump

Technical Field

The utility model relates to a formula of respiration loader air thrust augmentation pump belongs to engineering machine tool field.

Background

The loader braking system generally adopts a pneumatic jacking oil comprehensive braking mode, wherein an air booster pump is a very important braking element and can directly convert gas pressure energy generated by pushing a gas piston by compressed air into pressurized liquid pressure energy so as to push a brake on a dry type drive axle to brake. When a cylinder piston of the air booster pump reciprocates, a spring cavity repeatedly inhales or discharges air, and dust impurities in the air enter the booster pump to cause the problems of scratching of a sealing piece, pollution of brake oil and the like.

Application number 201120512901.0, the name is respirator of air thrust augmentation pump, for solving above-mentioned problem, installs the filter additional on the pump body, filters gas, but loader operational environment is unusually abominable, and the filter often takes place to block up or filters incompletely, causes dust impurity to get into in the pump body, though the device has solved the problem to a certain extent, nevertheless begins to block up the back and need often clear up, and the result of use is unsatisfactory.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a breathing type loader air thrust augmentation pump to above problem, the problem of the dust impurity of solving in the air easily gets into the pump body.

In order to achieve the purpose, the utility model discloses a breathing type loader air booster pump, this structure includes the cylinder block, connect the lid, hydraulic cylinder body, piston rod, air piston and hydraulic piston, cylinder block and hydraulic cylinder body are connected respectively in the both sides of connecting the lid, be provided with air piston in the cylinder block, be provided with hydraulic piston in the hydraulic cylinder body, piston rod slides and passes the middle part of connecting the lid, air piston and hydraulic piston are connected respectively to piston rod's both ends, it is provided with the mounting hole to connect to cover, the inner chamber of the one end intercommunication cylinder block of mounting hole, communicating pipe is connected to the other end of mounting hole, install the gasbag on communicating pipe. The air booster pump has the advantages that the air suction and exhaust processes in the reciprocating process of the air booster pump are carried out in the air bag, discharged air enters the air bag, the air is sucked from the air bag during air suction, the process of easily sucking impurity and dust is sealed, and the problems that a sealing piece is scratched, brake oil is polluted and the like due to the fact that the dust and the impurity enter the pump body can be avoided.

Furthermore, a one-way valve is arranged on the communicating pipe of the breathing structure. The air bag may have gas reduction in the processes of air suction and air discharge, and after the gas is reduced, part of the gas can be added into the pump body through the one-way valve.

Furthermore, a filter screen is arranged at the air inlet end of the one-way valve. The gas entering from the one-way valve may contain dust, impurities and the like, and the filter screen is arranged to prevent the dust, impurities and the like from entering.

Furthermore, a safety valve is arranged on the communicating pipe of the breathing structure. In the process of air suction and exhaust, too much gas can occur, the air bag can be excessively expanded and broken at the moment, in order to avoid the situation, a safety valve is arranged, when the gas pressure in the communication pipe is too high, the safety valve exhausts the gas, and the air bag is prevented from being burst.

Further, the air bag is a shrinkable rubber air bag. The air bag has certain elasticity, so that the problems in the working process can be reduced, and the failure rate is reduced.

Furthermore, an oil cup is arranged on the hydraulic cylinder body. The function is to supplement brake fluid to the inner cavity of the hydraulic cylinder body.

Furthermore, a return spring is arranged between the air piston and the connecting cover, and the return spring is sleeved on the piston connecting rod. The return spring is a compression spring and can assist the air piston to return.

Furthermore, the return spring is conical, the large end of the return spring is abutted against the air piston, and the small end of the return spring is abutted against the connecting cover. The conical return spring occupies less space after being compressed.

Furthermore, the hydraulic cylinder body is provided with an air release screw plug. The gas in the brake fluid can lead the brake to be unreliable, the air-release screw plug is arranged, and after the air-release screw plug is used for a period of time, the gas in the hydraulic cylinder body is discharged through the air-release screw plug, so that the brake reliability can be improved.

Furthermore, an air inlet and an air outlet are formed in the middle of one end, far away from the connecting cover, of the cylinder body. The air inlet and outlet are communicated with an air compression system, and air with pressure enters the cylinder body to push the air piston and drive the hydraulic piston to complete braking.

To sum up, the beneficial effects of the utility model reside in that: through this breathe structure with the process closure of breathing in, exhausting of air force application pump, avoid dust impurity to get into the pump body, cause sealing member fish tail, brake oil to receive the pollution scheduling problem, in order to guarantee that the gasbag can normally work, set up check valve and the relief valve of taking the filter screen on communicating pipe, avoid because of gas pressure is too high or cross low messenger's gasbag damage, reduced the fault rate.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

In the figure, 1, a cylinder body; 2. a connecting cover; 3. a hydraulic cylinder block; 4. a piston connecting rod; 5. an air piston; 6. a hydraulic piston; 7. mounting holes; 8. a communicating pipe; 9. an air bag; 10. a one-way valve; 11. a filter screen; 12. a safety valve; 13. an oil cup; 14. a return spring; 15. a bleeder screw; 16. an air inlet and an air outlet.

Detailed Description

The following detailed description of the embodiments of the present invention is made with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" 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 meaning of the above terms in this application will be understood to be a specific case for those of ordinary skill in the art.

The following is a description of preferred embodiments of the present invention with reference to the accompanying drawings.

Referring to fig. 1, the utility model discloses a breathing type loader air booster pump, this structure includes cylinder block 1, connect lid 2, hydraulic cylinder body 3, piston rod 4, air piston 5 and hydraulic piston 6, cylinder block 1 and hydraulic cylinder body 3 are connected respectively in the both sides of connecting lid 2, be provided with air piston 5 in the cylinder block 1, be provided with hydraulic piston 6 in the hydraulic cylinder body 3, piston rod 4 slides and passes the middle part of connecting lid 2, air piston 5 and hydraulic piston 6 are connected respectively to piston rod 4's both ends, be provided with mounting hole 7 on the connecting lid 2, the inner chamber of mounting hole 7's one end intercommunication cylinder block 1, communicating pipe 8 is connected to the other end of mounting hole 7, install gasbag 9 on communicating pipe 8. The air suction and exhaust processes in the reciprocating process of the air booster pump are carried out in the air bag 9, the discharged gas enters the air bag 9, the gas is sucked from the air bag 9 during air suction, the process of easily sucking impurity and dust is sealed, and the problems that the sealing piece is scratched, the brake oil is polluted and the like due to the fact that the dust and the impurity enter the pump body can be avoided.

The communicating pipe 8 of the breathing structure is provided with a one-way valve 10. The air bag 9 may have gas reduction during the processes of air suction and air discharge, and after the gas reduction, part of the gas can be added into the pump body through the one-way valve 10.

The air inlet end of the one-way valve 10 is provided with a filter screen 11. The gas introduced from the check valve 10 may contain dust and impurities, etc., and the filter net 11 is provided to prevent the dust and impurities from being introduced.

A safety valve 12 is mounted on the communicating pipe 8 of the breathing structure. In the process of air suction and exhaust, too much gas may occur, and at this time, the airbag 9 may be excessively inflated and ruptured, and in order to avoid this, a safety valve 12 is provided, and when the gas pressure in the communication pipe 8 is too high, the safety valve 12 exhausts the gas to avoid the airbag 9 from being burst.

The air bag 9 is a shrinkable rubber air bag 9. The air bag 9 has certain elasticity, so that the problems in the working process can be reduced, and the failure rate is reduced.

The hydraulic cylinder 3 is provided with an oil cup 13. The function is to supplement brake fluid to the inner cavity of the hydraulic cylinder 3.

A return spring 14 is arranged between the air piston 5 and the connecting cover 2, and the return spring 14 is sleeved on the piston connecting rod 4. The return spring 14 is a compression spring and can assist the air piston 5 to return.

The return spring 14 is conical, the large end of the return spring 14 is abutted against the air piston 5, and the small end of the return spring 14 is abutted against the connecting cover 2. The conical return spring 14 takes up less space after compression.

The hydraulic cylinder 3 is provided with a bleeder screw 15. The gas in the brake fluid can make the braking unreliable, and the air-bleed screw plug 15 is arranged, after the air-bleed screw plug is used for a period of time, the gas in the hydraulic cylinder body 3 is discharged through the air-bleed screw plug 15, so that the braking reliability can be improved.

The middle of one end of the cylinder body 1 far away from the connecting cover 2 is provided with an air inlet and outlet 16. The air inlet and outlet 16 is communicated with an air compression system, and air with pressure enters the cylinder body 1 to push the air piston 5 and drive the hydraulic piston 6 to complete braking.

When a loader driver steps on the brake, the air inlet and outlet 16 of the air booster pump enters pressurized air, the cylinder piston moves to the right, the air in the cylinder body 1 passes through the communicating pipe 8, one path of the air is blocked by the check valve 10 at the position of the check valve 10, and the other path of the air enters the air bag 9 to expand and store the air bag 9.

After the brake is released, the cylinder piston moves leftwards under the action of the return spring 14, and the gas in the air bag 9 enters the cylinder body 1 again through the communicating pipe 8, so that the gas circulates inside and is not exchanged with the external severe environment, and external impurity and dust cannot be brought into the inside to damage a sealing piece.

When air leaks, the piston of the air cylinder moves leftwards, and the air in the air bag 9 is insufficient, the external air firstly passes through the filter screen 11 and then enters the communicating pipe 8 through the one-way valve 10 to supplement the air, and the air can normally circulate between the air bag 9 and the air cylinder body 1 next time after the air is supplemented. The exchange with the outside air is greatly reduced, the entering of impurities is reduced, and the respirator does not need to be cleaned frequently. The safety valve 12 has a protection function, when the air cylinder piston leaks air and the air bag 9 is continuously inflated, the air overflows from the safety valve 12 after exceeding a certain pressure, and the air bag 9 cannot be inflated and exploded.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and replacements can be made without departing from the technical principle of the present invention, and these modifications and replacements should also be considered as the protection scope of the present invention.

Claims (10)

1. A breathing type loader air booster pump comprises a cylinder body (1), a connecting cover (2), a hydraulic cylinder body (3), a piston connecting rod (4), an air piston (5) and a hydraulic piston (6), the air cylinder is characterized in that the air cylinder body (1) and the hydraulic cylinder body (3) are connected to two sides of the connecting cover (2) respectively, an air piston (5) is arranged in the air cylinder body (1), a hydraulic piston (6) is arranged in the hydraulic cylinder body (3), the piston connecting rod (4) penetrates through the middle of the connecting cover (2) in a sliding mode, two ends of the piston connecting rod (4) are connected with the air piston (5) and the hydraulic piston (6) respectively, a mounting hole (7) is formed in the connecting cover (2), one end of the mounting hole (7) is communicated with an inner cavity of the air cylinder body (1), the other end of the mounting hole (7) is connected with a communicating pipe (8), and an air bag (9) is installed on the communicating pipe (8).

2. The air booster pump of the respiratory loader of claim 1, characterized in that a one-way valve (10) is mounted on the communicating tube (8).

3. The respiratory loader air booster pump according to claim 2, characterized in that the air intake end of the one-way valve (10) is provided with a filter screen (11).

4. Breathing loader air booster pump according to claim 1, characterised in that a safety valve (12) is fitted on the communicating tube (8).

5. Breathing loader air force pump according to claim 1, characterised in that the air bag (9) is a collapsible rubber air bag (9).

6. Breathing loader air booster pump according to claim 1, characterised in that the hydraulic cylinder (3) is provided with an oil cup (13).

7. The air booster pump of the respiratory loader of claim 1, wherein a return spring (14) is arranged between the air piston (5) and the connecting cover (2), and the return spring (14) is sleeved on the piston connecting rod (4).

8. The breathing loader air force pump as defined in claim 7 wherein the return spring (14) is conical, the large end of the return spring (14) abutting the air piston (5) and the small end of the return spring (14) abutting the connecting cap (2).

9. Breathing loader air booster pump according to claim 1, characterised in that the hydraulic cylinder (3) is provided with a bleeder plug (15).

10. Breathing loader air booster pump according to claim 1, characterised in that the cylinder block (1) is provided with an air inlet and outlet opening (16) in the middle of the end remote from the connecting cover (2).

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