A brake control system

Abstract

The application provides a brake control system, which comprises a winch, a brake device connected with the winch, an oil path communication device, a two-way valve, an oil inlet and an oil tank, the brake device is connected with one end of the oil path communication device and one end of the two-way valve through a one-way valve respectively, the other end of the oil path communication device is connected with the oil inlet through a pressure reducing valve, and the other end of the two-way valve is connected with the oil tank, and the application can avoid the brake being loosened by mistake due to the single failure of the control oil path in the process of controlling the winch by hydraulic pressure, and further improve the reliability of the brake.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of crane brake, in particular to a brake control system. BACKGROUND

[0002] With the development of social industry, the application of hydraulic system is more and more important, and at present, the brake control through hydraulic system is commonly used in petroleum drilling machine, workover rig, crane and the like. For the petroleum drilling machine, with the increase of various supporting equipment, the existing brake handle is automatically returned to the release position after the external force is cancelled, that is, when the hand is released, the brake state is automatically released, and the brake state can only be maintained by holding the brake handle with hand, which is complicated and prone to safety. In order to solve the technical problem, a control system of hydraulic disc brake is disclosed in the patent document with the patent application number of 202222536421.9 and the publication date of 2022.12.06, which comprises a brake handle and a button switch arranged on the brake handle; an electromagnetic reversing air valve cooperating with the hydraulic disc brake safety clamp; a control component and a reset button connected with the control component.

[0003] In the above-mentioned document, under the control of the control component, when the button switch is not pressed, the entire hydraulic disc brake safety clamp is automatically in the locked state, so that when the brake handle is in the released state, the drilling machine is automatically in the brake state, and when the brake state is to be released, it can be directly pressed, thereby reducing the safety hazard and making the drilling machine more safe when stopping. SUMMARY

[0004] The purpose of the present application is to provide a brake control system which can avoid the single fault of the control oil circuit to cause the brake to be released by mistake, thereby improving the reliability of the brake, and the oil circuit structure is simple.

[0005] In order to achieve the above-mentioned purpose, a brake control system comprises a winch, a brake device connected with the winch, an oil circuit communication device, an oil inlet and an oil tank, and further comprises a two-way valve, the brake device is connected with one end of the oil circuit communication device and one end of the two-way valve through a one-way valve, the other end of the oil circuit communication device is connected with the oil inlet through a pressure reducing valve, and the other end of the two-way valve is connected with the oil tank.

[0006] The oil passage communication device comprises an electromagnetic valve one and an electromagnetic valve two, the electromagnetic valve one and the electromagnetic valve two are connected in series, a P1 valve port of the electromagnetic valve one is connected with an oil inlet, an A1 valve port of the electromagnetic valve one is connected with a P2 valve port of the electromagnetic valve two in a conductive manner, an A2 valve port of the electromagnetic valve two is connected with an input end of a one-way valve and an upper end of a two-way valve respectively, an output end of the one-way valve is connected with a lower end of the two-way valve and a brake device respectively, a T1 valve port of the electromagnetic valve one, a T2 valve port of the electromagnetic valve two and a B valve port of the two-way valve are all connected with an oil tank, and the brake device is released when the one-way valve input oil passage reaches the brake device.

[0007] The above arrangement, by setting the electromagnetic valve one and the electromagnetic valve two in series, so that when the control liquid oil realizes the brake device to release the brake, the electromagnetic valve one and the electromagnetic valve two need to be controlled at the same time, and the electromagnetic valve one and the electromagnetic valve two are turned on at the same time, so that the liquid oil passing through the pressure reducing valve can flow through the electromagnetic valve one and the electromagnetic valve two to the one-way valve, and the two-way valve is connected with the two ends of the one-way valve, so that the liquid oil flowing through the two ends of the one-way valve is equal in pressure, and then the liquid oil flows to the brake device to release the brake; and after any one of the electromagnetic valves loses power, the oil pressure of the oil passage connected with the brake device is greater than the oil pressure of the two-way valve, and then the liquid oil of the oil passage connected with the brake device flows back to the oil tank through the two-way valve, thereby realizing the brake; since the electromagnetic valve one and the electromagnetic valve two are connected in series, only two electromagnetic valves can be powered at the same time to release the brake, and any one electromagnetic valve loses power to make the brake tight, thereby avoiding the single failure of the brake caused by the error operation of the control oil passage in the process of hydraulic control winch, thereby improving the reliability of the brake, and the oil passage structure is simple.

[0008] Further, the brake device comprises an oil storage tank, a spring one, a piston and a brake block, one end of the spring one is fixed at the bottom of the oil storage tank, the other end of the spring one is fixedly connected with one end of the piston arranged in the oil storage tank, the other end of the piston is fixedly connected with the brake block, the brake block abuts against the rotating shaft of the winch, and the piston divides the oil storage tank into an upper oil storage chamber and a lower oil storage chamber, the upper oil storage chamber is connected with the output end of the one-way valve.

[0009] The above arrangement, when the brake of the winch needs to be released, the liquid oil flows directly into the upper oil storage chamber through the one-way valve, thereby generating a downward force on the piston to compress the spring one, thereby driving the piston to move downward, so that the brake block is separated from the rotating shaft of the winch to release the brake.

[0010] Further, the two-way valve is internally provided with a spring two and a connecting block, one end of the spring two is fixedly connected at the top of the two-way valve, the other end of the spring two is fixedly connected with the connecting block, and the connecting block divides the two-way valve into a first chamber and a second chamber.

[0011] The above arrangement can push the connecting block to compress or stretch the spring two, and further adjust the oil pressure of the oil path connected with the brake device after the liquid oil flows into the two-way valve.

[0012] Further, one side of the first chamber is provided with a B valve port connected with an oil tank, an input end of a one-way valve is connected with an upper end of the first chamber, and a lower end of a second chamber is connected with an output end of the one-way valve.

[0013] The above arrangement can make the oil pressure on both sides of the one-way valve equal, so that the liquid oil passing through the one-way valve directly flows into the upper oil storage chamber to compress the spring one and drive the piston to move downward, so that the brake block is separated from the winch shaft and the brake is released.

[0014] Further, one end of the pressure reducing valve is connected with the oil inlet, and the other end of the pressure reducing valve is connected with the P1 valve port of the electromagnetic valve one.

[0015] The above arrangement can adjust the external oil pressure to the range that can be borne by the brake device through the pressure reducing valve.

[0016] Further, the electromagnetic valve one and the electromagnetic valve two are both two-position three-way valves.

[0017] The above arrangement can conveniently realize the connection between the input end and the output end through the control of the P port. DETAILED DESCRIPTION

[0018] Figure 1 The structure connection diagram of the application.

[0019] Figure 2 The Figure 1 The enlarged view of D in the middle.

[0020] Figure 3 The Figure 1 The enlarged view of E in the middle.

[0021] Figure 4 The Figure 1 The enlarged view of F in the middle. DETAILED DESCRIPTION

[0022] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0023] like Figures 1 to 4 As shown, a brake control system includes a winch 1, a brake device connected to the winch 1, an oil circuit connection device, a two-way valve 6, an oil inlet 9, and an oil tank 10. The brake device is connected to one end of the oil circuit connection device and one end of the two-way valve 6 via a one-way valve 11. The other end of the oil circuit connection device is connected to the oil inlet 9 via a pressure reducing valve 8. The other end of the two-way valve 6 is connected to the oil tank 10.

[0024] like Figure 1 As shown, the oil circuit connection device includes solenoid valve 71 and solenoid valve 72. Solenoid valve 71 and solenoid valve 72 are connected in series. One end of pressure reducing valve 8 is connected to oil inlet 9, and the other end of pressure reducing valve 8 is connected to valve port P1 of solenoid valve 71. Valve port A1 of solenoid valve 71 and valve port P2 of solenoid valve 72 are connected in series. Thus, both solenoid valves must be energized simultaneously for the hydraulic oil passing through pressure reducing valve 8 to flow through both solenoid valves. Otherwise, the hydraulic oil passing through pressure reducing valve 8 cannot reach the braking device through solenoid valves 71 and 72 to open the brake. In this embodiment, both solenoid valve 1 and solenoid valve 2 are two-position three-way valves.

[0025] like Figures 2-4As shown, when the one-way valve input oil way to the brake device, the brake device is released, the brake device includes oil tank 4, spring 51, piston 5 and brake block 3, one end of spring 51 is fixed at the bottom of oil tank 4, the other end of spring 51 is fixedly connected with one end of piston 5 arranged in oil tank 4, the other end of piston 5 is fixedly connected with brake block 3, brake block 3 abuts with rotating shaft 2 of winch 1, piston 5 divides oil tank 4 into upper oil storage chamber 41 and lower oil storage chamber 42, upper oil storage chamber 41 is connected with the output end of one-way valve, spring 52 and connecting block 7 are arranged in two-way valve 6, one end of spring 52 is fixedly connected at the top of two-way valve 6, the other end of spring 52 is fixedly connected with connecting block 7, connecting block 7 divides two-way valve 6 into first chamber 61 and second chamber 62, B valve port is arranged at one side of first chamber 61, B valve port is connected with oil tank 10, the output end of one-way valve 11 is connected with the upper end of first chamber 61, the lower end of second chamber 62 is connected with the input end of one-way valve and A2 valve port of electromagnetic valve two respectively, T1 valve port of electromagnetic valve one 71, T2 valve port of electromagnetic valve two 72 and B valve port of two-way valve 6 are all connected with oil tank 10; in this way, when the brake is not needed, through the connection of second chamber 62 with the input end of one-way valve 11 and the connection of the output end of one-way valve 11 with first chamber 61, the oil pressure through both ends of one-way valve 11 is equal, the liquid oil passing through one-way valve 11 directly flows into upper oil storage chamber 41, which generates downward force on piston 5 to compress spring 51, thereby driving piston 5 to move downward, so that brake block 3 is separated from rotating shaft 2 of winch 1, and the brake is released; when the brake is needed, after one of electromagnetic valve one 71 and electromagnetic valve two 72 is disconnected, the oil pressure of second chamber 62 connected with the input end of one-way valve 11 is reduced, so that the oil pressure of first chamber 61 is greater than that of second chamber 62, thereby driving connecting block 7 to move upward to compress spring 52, the liquid oil in first chamber 61 flows out from B valve port, thereby reducing the oil pressure of first chamber 61, so that the oil pressure in upper oil storage chamber 41 is greater than that in first chamber 61, thereby making the liquid oil in upper oil storage chamber 41 flow into first chamber 61 through oil way under the action of spring 51, and then flow back to oil tank 10 through B valve port, and then spring 51 drives piston 5 to move upward, so that brake block 3 abuts with rotating shaft 2 of winch 1, and the brake is realized. In the embodiment, oil inlet 9 is connected with external oil pump (not marked in the figure).

[0026] The working principle of the application is: when the brake needs to work, the liquid oil flows through the pressure reducing valve 8 through the oil inlet 9, and the oil pressure of the liquid oil is adjusted to the bearing range of the brake device, and then the liquid oil flows into the electromagnetic valve one 71, so that the electromagnetic valve one 71 and the electromagnetic valve two 72 are electrified at the same time, so that the electromagnetic valve one 71 and the electromagnetic valve two 72 are in series conduction, and the liquid oil flows through the electromagnetic valve one 71 and the electromagnetic valve two 72 to the one-way valve 11 in turn, and flows to the two-way valve 6 through the oil distribution path, the two ends of the two-way valve 6 are connected with the two ends of the one-way valve 11 respectively, so that the oil pressure of the liquid oil flowing through the two ends of the one-way valve 11 is equal, and then the liquid oil flows to the brake device, and the oil pressure of the upper oil storage chamber 41 of the oil storage tank 4 in the brake device increases, so that the spring one 51 in the oil storage tank 4 is pressed down, the piston 5 drives the brake block 3 to move downward, so that the brake is loosened, and the winch 1 works normally; when the brake needs to stop working, one of the electromagnetic valve one 71 and the electromagnetic valve two 72 is de-energized or both are de-energized at the same time, so that the oil pressure of the second chamber 62 connected with the A2 valve port of the electromagnetic valve two 72 is reduced, the oil pressure of the first chamber 61 is greater than that of the second chamber 62, the connecting block 7 is pushed to move upward to compress the spring two 52, the liquid oil in the first chamber 61 flows out from the B valve port, so that the oil pressure of the first chamber 61 is reduced, the oil pressure of the brake device is greater than that of the first chamber 61, so that the liquid oil of the brake device flows into the first chamber 61 through the oil path, and then flows back to the oil tank 10 through the B valve port, finally the oil pressure of the brake device is reduced, so that the brake block 3 abuts against the rotating shaft 2 of the winch 1, and the brake is realized.

Claims

1. A brake control system, comprising a winch, a brake device connected to the winch, an oil circuit connection device, an oil inlet, and an oil tank, characterized in that: It also includes a two-way valve. The braking device is connected to one end of the oil circuit connecting device and one end of the two-way valve through a one-way valve. The other end of the oil circuit connecting device is connected to the oil inlet through a pressure reducing valve. The other end of the two-way valve is connected to the oil tank. One end of the pressure reducing valve is connected to the oil inlet, and the other end of the pressure reducing valve is connected to the P1 valve port of the solenoid valve. The braking device includes an oil reservoir, a spring, a piston, and a brake block. One end of the spring is fixed to the bottom of the oil reservoir, and the other end of the spring is fixedly connected to one end of the piston located inside the oil reservoir. The other end of the piston is fixedly connected to the brake block. The brake block abuts against the shaft of the winch. The piston divides the interior of the oil reservoir into an upper oil reservoir and a lower oil reservoir. The upper oil reservoir is connected to the other end of a one-way valve. The oil circuit connection device includes solenoid valve one and solenoid valve two, which are connected in series. The P1 port of solenoid valve one is connected to the oil inlet, and the A1 port of solenoid valve one is connected to the P2 port of solenoid valve two. The A2 port of solenoid valve two is connected to the input end of a check valve and the upper end of a two-way valve, respectively. The output end of the check valve is connected to the lower end of the two-way valve and the brake device, respectively. The T1 port of solenoid valve one, the T2 port of solenoid valve two, and the B port of the two-way valve are all connected to the oil tank. When the oil is input to the brake device through the check valve, the brake device is released. Both solenoid valve one and solenoid valve two are two-position three-way valves.

2. The brake control system according to claim 1, characterized in that: The two-way valve is equipped with a second spring and a connecting block inside. One end of the second spring is fixedly connected to the top of the two-way valve, and the other end of the second spring is fixedly connected to the connecting block. The connecting block divides the interior of the two-way valve into a first chamber and a second chamber.

3. A brake control system according to claim 2, characterized in that: The first chamber has a B valve port on one side, which is connected to the oil tank. The input end of the one-way valve is connected to the upper end of the first chamber, and the lower end of the second chamber is connected to the output end of the one-way valve.

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