CN216374517U

CN216374517U - Mechanical locking device of safety brake cylinder

Info

Publication number: CN216374517U
Application number: CN202122526222.5U
Authority: CN
Inventors: 翁智剑
Original assignee: Zhejiang Aovite Hydraulic Mechanical Co ltd
Current assignee: Zhejiang Aovite Hydraulic Mechanical Co ltd
Priority date: 2021-10-20
Filing date: 2021-10-20
Publication date: 2022-04-26
Anticipated expiration: 2031-10-20

Abstract

The utility model discloses a mechanical locking device of a safety brake cylinder, which comprises a bottom cover, wherein the top end of the bottom cover is provided with a solenoid valve assembly, a sealing gasket is arranged between the bottom end of the solenoid valve assembly and the top end of the bottom cover, the outside of the solenoid valve assembly is provided with a solenoid valve cover, two ends of the top of the solenoid valve assembly are respectively inserted with a first outer hexagonal bolt, and the outside of the first outer hexagonal bolt is respectively sleeved with a gasket. The electromagnetic force generated by the electromagnetic valve assembly disappears after the mechanical locking device of the safety brake cylinder is electrified, the valve core moves under the action of the elastic force of the internal spring, pressure oil fed into the rear brake 1200PSI is discharged back to the oil tank as a result of the movement, the spring in the rear wheel brake pushes the parking brake piston, and the piston presses the friction plate, so that the rear wheel is in a mechanical braking state, and the problem of poor working effect of a mechanical locking function is solved.

Description

Mechanical locking device of safety brake cylinder

Technical Field

The utility model relates to the technical field of locking valves, in particular to a mechanical locking device of a safety brake cylinder.

Background

The safe brake cylinder is mainly used for vehicle working, parking and emergency braking, the braking is performed by a single working diaphragm, the safe brake cylinder is provided with a mechanical push rod locking device, the mechanical locking effect of the safe brake cylinder can be realized during braking through the mechanical locking device, so that an air supply system cannot normally work, but the problem of poor working effect of the mechanical locking function exists in the actual use process of the conventional mechanical locking device. To this end, we propose a mechanical locking device for a safety brake cylinder to deal with these problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a mechanical locking device of a safety brake cylinder, which aims to solve the problem of poor working effect of the mechanical locking function in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme: the mechanical locking device of the safety brake cylinder comprises a bottom cover, wherein a solenoid valve assembly is arranged at the top end of the bottom cover, a sealing gasket is arranged between the bottom end of the solenoid valve assembly and the top end of the bottom cover, a solenoid valve cover is arranged outside the solenoid valve assembly, first outer hexagonal bolts are respectively inserted into two ends of the top of the solenoid valve assembly, gaskets are respectively sleeved outside the first outer hexagonal bolts, and a split pin is inserted into one side of one end of the top of the bottom cover.

Preferably, one side of one end in the bottom cover is provided with a first mounting hole, a second plug is inserted into the first mounting hole, and a third O-shaped ring is sleeved outside the second plug.

Preferably, second mounting holes are uniformly formed in one side of the other end of the inner portion of the bottom cover, first plugs are respectively inserted into the second mounting holes, and second O-shaped rings are respectively sleeved on the outer portions of the first plugs.

Preferably, the valve core is inserted into one end of the bottom cover, the spring is sleeved at one end of the outer part of the valve core, the plug is inserted into one side of the spring, and the first O-shaped ring is sleeved on the outer part of the plug.

Preferably, the two ends of the top of the electromagnetic valve cover are respectively inserted with a second outer hexagon bolt, and the gasket is respectively sleeved outside the second outer hexagon bolt.

Preferably, the bottom ends of the first outer hexagon bolts penetrate through the sealing gaskets respectively, and the bottom ends of the first outer hexagon bolts penetrate through the inner portion of the bottom cover and are fixedly connected with the bottom cover.

Compared with the prior art, the utility model has the beneficial effects that: the mechanical locking device of the safety brake cylinder not only realizes good working effect of mechanical locking function, realizes effective braking and releasing of the rear wheel, but also realizes low-pressure alarm of braking and parking braking;

(1) through the electromagnetic valve assembly, the valve core and the spring, the valve core is attracted by the electromagnetic force generated by the coil when the brake is electrified, the supplied pressure oil is supplied to the combined brake valve as a result of the movement of the valve core, the pressure is adjusted to 1200PSI by the combined brake valve and is supplied to a parking piston cavity of a rear wheel brake, and the spring in the brake piston is compressed by the pressure of 1200PSI, so that the spring is not pressed on the friction plate any more, and the brake is in a release state;

(2) by arranging the electromagnetic valve assembly, the valve core and the spring, electromagnetic force generated by the electromagnetic valve assembly disappears after the power is on, the valve core moves the position of the electromagnetic valve assembly under the action of the elastic force of the internal spring, on one hand, pressure oil supplied to a rear brake 1200PSI is discharged back to an oil tank as a result of the movement, a spring in the rear wheel brake pushes a parking brake piston, and the piston presses a friction plate to enable a rear wheel to be in a mechanical braking state;

(3) through being provided with bottom, case and solenoid valve assembly, it just switches on when pressure is less than 1900PSI to be the long through type switch at two braking low pressure switches to lighted the braking energy storage ware low pressure warning lamp on the instrument board, send low pressure alarm signal to the operator, when pressure is higher than 1900PSI, the circuit disconnection that the switch is connected, the low pressure warning lamp extinguishes, also be the long through type switch when parking braking pressure switch, switch on when pressure is less than 940PSI, thereby lighted the parking braking pressure pilot lamp on the instrument board, it has been in the parking braking state to show the vehicle.

Drawings

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

FIG. 2 is an enlarged front perspective view of the present invention;

FIG. 3 is an enlarged front perspective view of the solenoid valve assembly of the present invention;

fig. 4 is a schematic front perspective view of the bottom cover of the present invention.

In the figure: 1. a bottom cover; 2. a valve core; 3. a spring; 4. blocking; 5. a first O-ring; 6. a cotter pin; 7. a second O-ring; 8. a first plug; 9. a third O-ring; 10. a second plug; 11. a gasket; 12. a solenoid valve assembly; 13. a gasket; 14. a first outer hexagon bolt; 15. an electromagnetic valve cover; 16. a second outer hexagon bolt; 17. a first mounting hole; 18. and a second mounting 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.

Example 1: referring to fig. 1-4, a mechanical locking device of a safety brake cylinder includes a bottom cover 1, a solenoid valve assembly 12 is disposed at a top end of the bottom cover 1, a sealing gasket 11 is disposed between a bottom end of the solenoid valve assembly 12 and a top end of the bottom cover 1, a solenoid valve cover 15 is disposed outside the solenoid valve assembly 12, first outer hexagon bolts 14 are respectively inserted into two ends of a top portion of the solenoid valve assembly 12, gaskets 13 are respectively sleeved outside the first outer hexagon bolts 14, cotter pins 6 are inserted into one side of one end of the top portion of the bottom cover 1, second outer hexagon bolts 16 are respectively inserted into two ends of the top portion of the solenoid valve cover 15, the gaskets 13 are respectively sleeved outside the second outer hexagon bolts 16, bottom ends of the first outer hexagon bolts 14 respectively penetrate through the sealing gasket 11, and bottom ends of the first outer hexagon bolts 14 penetrate through an inside of the bottom cover 1 and are fixedly connected with the bottom cover;

a first mounting hole 17 is formed in one side of one end inside the bottom cover 1, a second plug 10 is inserted into the first mounting hole 17, a third O-shaped ring 9 is sleeved outside the second plug 10, second mounting holes 18 are uniformly formed in one side of the other end inside the bottom cover 1, a first plug 8 is inserted into each second mounting hole 18, and a second O-shaped ring 7 is sleeved outside each first plug 8;

specifically, as shown in fig. 1, 2, 3 and 4, when the brake is powered on, the electromagnetic force generated by the coil attracts the spool 2, the spool 2 moves to supply the supplied pressure oil to the combined brake valve, the combined brake valve adjusts the pressure to 1200PSI and supplies the pressure to the parking piston cavity of the rear wheel brake, the spring 3 in the brake piston is compressed by the pressure of 1200PSI, so that the spring 3 is not pressed on the friction plate, the brake is in a release state, the electromagnetic force generated by the solenoid valve assembly 12 after the power on disappears, the spool 2 moves its position under the action of the elastic force of the internal spring 3, and as a result, on one hand, the pressure oil supplied to the rear brake PSI is discharged back to the oil tank, the spring 3 in the rear wheel brake pushes the parking brake piston, and the piston is pressed on the friction plate, so that the rear wheel is in a mechanical braking state.

Example 2: a valve core 2 is inserted into one end of the bottom cover 1, one end of the outer part of the valve core 2 is sleeved with a spring 3, one side of the spring 3 is inserted with a plug 4, and the outer part of the plug 4 is sleeved with a first O-shaped ring 5;

specifically, as shown in fig. 1, 2, 3 and 4, when the two brake low-pressure switches are of a long-pass type, the two brake low-pressure switches are switched on when the pressure is lower than 1900PSI, so that a brake energy storage device low-pressure warning lamp on an instrument panel is lightened, and a low-pressure warning signal is sent to an operator. When the pressure is higher than 1900PSI, a line connected with the switch is disconnected, the low-pressure warning lamp is turned off, when the pressure of the parking brake pressure switch is also a long-pass switch, the parking brake pressure switch is turned on when the pressure is lower than 940PSI, and therefore the parking brake pressure indicating lamp on the instrument board is turned on, and the vehicle is in a parking brake state.

The working principle is as follows: when the utility model is used, firstly, the power on/off of the battery valve assembly is controlled by the brake button, and when the red or black brake button is pulled out, the battery valve is electrified. When the brake is powered on, the electromagnetic force generated by the coil attracts the valve core 2, the supplied pressure oil is supplied to the combined brake valve as a result of the movement of the valve core 2, the pressure is adjusted to 1200PSI by the combined brake valve and supplied to a parking piston cavity of a rear wheel brake, and the spring 3 in the brake piston is compressed by the pressure of 1200PSI, so that the spring 3 is not pressed on the friction plate any more, and the brake is in a release state; when the red or black detent button is pushed in, the coil is de-energized. After the power is on, the electromagnetic force generated by the electromagnetic valve assembly 12 disappears, the valve core 2 moves under the action of the force of the internal spring 3, on one hand, the pressure oil supplied to the rear brake 1200PSI is discharged back to the oil tank as a result of the movement, the spring 3 in the rear wheel brake pushes the parking brake piston, and then the piston presses on the friction plate, so that the rear wheel is in a mechanical braking state. On the other hand, the supplied pressure oil is supplied to the change valve, and then is supplied to the PX port of the foot valve through the change valve. The two brake low-pressure switches are long-pass switches, and are switched on when the pressure is lower than 1900PSI, so that a brake energy accumulator low-pressure alarm lamp on the instrument panel is lightened, and a low-pressure alarm signal is sent to an operator. When the pressure is higher than 1900PSI, the line connected with the switch is disconnected, and the low-pressure alarm lamp is turned off; the parking brake pressure switch is also a long-pass switch, and is switched on when the pressure is lower than 940PSI, so that a parking brake pressure indicator lamp on an instrument panel is lightened, and the vehicle is in a parking brake state.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides a mechanical blocking device of safe braking wheel cylinder, includes bottom (1), its characterized in that: the top of bottom (1) is provided with solenoid valve assembly (12), be provided with sealed pad (11) between the bottom of solenoid valve assembly (12) and the top of bottom (1), the outside of solenoid valve assembly (12) is provided with solenoid valve lid (15), the both ends at solenoid valve assembly (12) top are pegged graft respectively and are had first outer hex bolts (14), gasket (13) have been cup jointed respectively to the outside of first outer hex bolts (14), one side of bottom (1) top one end is pegged graft and is had cotter (6).

2. The mechanical locking device of a safety brake cylinder according to claim 1, characterized in that: one side of one end in the bottom cover (1) is provided with a first mounting hole (17), a second plug (10) is inserted into the first mounting hole (17), and a third O-shaped ring (9) is sleeved outside the second plug (10).

3. The mechanical locking device of a safety brake cylinder according to claim 1, characterized in that: one side of the other end in the bottom cover (1) is uniformly provided with second mounting holes (18), the insides of the second mounting holes (18) are respectively spliced with first plugs (8), and the outsides of the first plugs (8) are respectively sleeved with second O-shaped rings (7).

4. The mechanical locking device of a safety brake cylinder according to claim 1, characterized in that: the valve core (2) is inserted into the inner part of one end of the bottom cover (1), the spring (3) is sleeved at one end of the outer part of the valve core (2), the plug (4) is inserted into one side of the spring (3), and the first O-shaped ring (5) is sleeved outside the plug (4).

5. The mechanical locking device of a safety brake cylinder according to claim 1, characterized in that: and the two ends of the top of the electromagnetic valve cover (15) are respectively inserted with a second outer hexagon bolt (16), and the gasket (13) is respectively sleeved outside the second outer hexagon bolt (16).

6. The mechanical locking device of a safety brake cylinder according to claim 1, characterized in that: the bottom end of the first outer hexagon bolt (14) penetrates through the sealing gasket (11) respectively, and the bottom end of the first outer hexagon bolt (14) penetrates through the inside of the bottom cover (1) and is fixedly connected with the bottom cover.