TWI628366B - Brake method for closing hydraulic brake equipment - Google Patents

Abstract

The braking method of the closed type hydraulic brake device of the present invention comprises the following steps: firstly, providing a pressure accumulation command; then, performing pressure accumulation according to the pressure accumulation command to temporarily store the hydraulic oil in the pressure accumulation device; and then emptying according to system conditions The hydraulic oil in the oil pipe of the brake circuit; in addition, a brake command is provided; finally, the brake is executed according to the brake command to force the hydraulic oil in the pressure accumulation device to be discharged into the oil pipe of the brake circuit to brake the rotating load. The braking method of the invention can effectively improve the braking effect and prolong the service life of the hydraulic oil.

Description

Brake method for closed hydraulic brake equipment

The invention relates to a brake system, and in particular to a brake method for a closed hydraulic brake device.

When the rotating equipment is to be functionally tested, repaired, inspected, and maintained, the equipment needs to be stopped to ensure personnel safety. However, in the face of large-scale equipment, such as chemical factories, iron factories, or other factories that use large power, it is necessary to stop the equipment by external force.

This external force is also the brake. The brake can produce the braking effect by rubbing the piece or the brake piece, but the piece or the brake piece will need to be replaced frequently due to the friction loss, and it is more likely to generate sparks during the friction process, which is dangerous.

Therefore, in the face of such dangerous working environment, especially when it is not allowed to generate sparks, closed hydraulic brake technology is usually adopted. For example, Taiwan I431208 patent hydraulic brake device, Taiwan I448401 patent discloses a hydraulic brake device and its control. Method, Taiwan Patent No. I440779 discloses a hydraulic brake device that reduces heat generation. In the case of Taiwan's I440779 patent application, if it encounters special circumstances or dangers, it may not be able to brake the equipment through hydraulic oil in time and efficiently, because the hydraulic oil does not flow in the oil pipe during normal operation, so when braking is required The gear pump slowly drives the hydraulic oil into the gear pump, which usually takes more time to brake.

In view of the above-mentioned deficiencies, it is an object of the present invention to provide a brake method for a closed type hydraulic brake device to provide efficient braking operation and extend the service life of the hydraulic oil.

In order to achieve the above object, a braking method for a closed type hydraulic brake device of the present invention includes the following steps: first, a pressure accumulation command is provided; then, a pressure accumulation command is performed according to a pressure accumulation command, The hydraulic oil is temporarily stored in the pressure accumulating device; then, the hydraulic oil in the oil pipe of the brake circuit is exhausted according to the system condition; and then, a brake command is provided; finally, the brake is executed according to the braking command to force the hydraulic pressure in the pressure accumulating device The oil is discharged into the oil pipe of the brake circuit to brake the rotating load.

In this way, the braking method of the present invention can efficiently pressurize the hydraulic oil through the pressure accumulating device, and the hydraulic oil can quickly reach the gear pump connected to the load to achieve the purpose of efficient braking. Furthermore, when the vehicle has not yet been braked, the hydraulic oil can be drained through system conditions to avoid an increase in the oil temperature of the circulating hydraulic oil to increase the service life of the hydraulic oil.

Detailed steps, configurations, features, assembly or use of the braking method of the enclosed hydraulic brake device provided by the present invention will be described in the detailed description of the subsequent embodiments. However, it should be understood by those of ordinary skill in the art that the present invention is not limited by the scope of the invention.

100‧‧‧How to drive

S11-S15‧‧‧Steps

30‧‧‧Closed hydraulic brake equipment

31‧‧‧Control device

311‧‧‧Programmable controller

313‧‧‧Signal Converter

33‧‧‧ brake circuit

331‧‧‧Tube

332‧‧‧ fuel tank

333‧‧‧Oil solenoid valve

334‧‧‧ Gear pump

335‧‧‧ check valve

336‧‧‧pressure sensor

337‧‧‧Electro-hydraulic proportional control valve

338‧‧‧Return solenoid valve

35‧‧‧Accumulation device

351‧‧‧Accumulation solenoid valve

37‧‧‧ gas pipeline

371‧‧‧ gas solenoid valve

373‧‧‧ trachea

50‧‧‧ load

70‧‧‧Handheld electronic devices

Fig. 1 is a flow chart showing the procedure of the brake method of the closed type hydraulic brake device of the present invention.

Fig. 2-3 is a flow chart showing the other two procedures of the brake method of the closed type hydraulic brake device of the present invention.

Fig. 4 is a schematic view showing the composition of the closed type hydraulic brake device of the present invention.

Fig. 5 is a schematic view of a controller for controlling a brake method of a closed type hydraulic brake device of the present invention by using a hand-held device.

Hereinafter, the steps, constituent members, and achievement of the braking method of the closed type hydraulic brake device of the present invention will be described with reference to the preferred embodiments of the drawings. The order of the steps, the components, the dimensions and the appearance of the braking method of the closed type hydraulic brake device in each of the drawings are only for explaining the technical features of the present invention, and are not intended to limit the present invention.

As shown in Fig. 1, the figure is a flow chart of the braking method 100 of the closed type hydraulic brake device of the present invention. The braking method 100 includes five steps, but the number of steps may be more or less in other embodiments, and the order of the steps is not limited to the embodiment.

First, step S11: providing a pressure accumulation command. Next, step S12: based on The pressure command performs the pressure accumulation, that is, the hydraulic oil is temporarily stored in the pressure accumulating device. Then, step S13: emptying the hydraulic oil in the oil pipe of the brake circuit according to the system condition. Then, step S14: providing a brake command. Finally, in step S15, the brake is executed according to the braking command. This step is to forcibly discharge the hydraulic oil in the pressure accumulating device into the oil pipe of the brake circuit to brake the rotating load. The load can be a motor shaft, a rotating wheel or other rotating device.

Based on the five steps of Figure 1, Figure 2 provides fewer steps, which is less than step S13 compared to Figure 1. Step S11: Providing a pressure accumulation command. Next, in step S12, the pressure accumulation is performed in accordance with the pressure accumulation command, that is, the hydraulic oil is temporarily stored in the pressure accumulation device. Then, step S14: providing a brake command. Finally, in step S15, the brake is executed according to the braking command. This step is to forcibly discharge the hydraulic oil in the pressure accumulating device into the oil pipe of the brake circuit to brake the rotating load. In this embodiment, the brake method is to perform the brake immediately after the pressure accumulation, and therefore, the brake method does not require the step S13, but the brake can be directly performed.

Based on the five steps of FIG. 1, FIG. 3 provides a number of steps, which are compared to steps S121 and S122 of FIG. 1, and steps S121-S122 are specific steps of step S12. Step S11: Providing a pressure accumulation command. Next, in step S12, the pressure accumulation is performed in accordance with the pressure accumulation command. Then, step S121 is further performed: supplying hydraulic oil to the oil pipe of the brake circuit, and in this step, the supply hydraulic oil is discharged from the fuel tank of the brake circuit. Then, step S122 is executed: the hydraulic oil is sucked into the pressure accumulating device from the oil pipe of the brake circuit, that is, the hydraulic oil is temporarily stored in the pressure accumulating device. Then, step S13: emptying the hydraulic oil in the oil pipe of the brake circuit according to the system condition. Then, step S14: providing a brake command. Finally, step S15: performing the braking according to the braking command.

In the present embodiment, the hydraulic oil is sucked into the pressure accumulating device to reduce the internal gas pressure of the pressure accumulating device to generate suction force to suck the hydraulic oil in the oil pipe. However, in other embodiments, the suction mode can also be driven by the gear. Or other means to introduce hydraulic oil into the pressure accumulator.

In the above step S13, the hydraulic oil in the brake circuit of the brake circuit is first suspended from the fuel tank of the brake circuit to supply the hydraulic oil to the fuel pipe of the brake circuit, and the gas is injected into the oil pipe, so that the residual hydraulic oil in the oil pipe is driven by the gas and returned to the fuel tank. In order to avoid the oil temperature rise of the hydraulic oil, to improve the service life of the hydraulic oil.

The system condition according to step 13 in this embodiment is the oil temperature or the load running time of the hydraulic oil in the oil pipe of the brake circuit. Therefore, the braking method of the present invention can be used in the hydraulic oil. When the oil temperature rises to the system setting parameter, or when the load running time reaches the stable or system setting parameter time, the hydraulic oil in the brake circuit is stored in the fuel tank to facilitate the cooling of the hydraulic oil. However, in other embodiments, system conditions may also depend on other factors.

In the above step S15, the hydraulic oil in the pressure accumulating device is forcibly discharged to the brake pipe of the brake circuit through the supercharging process. In this embodiment, the air bag type accumulator is used, so that the gas pressure in the air bag can be changed. Increase or decrease the gas pressure to achieve the purpose of pressurizing the pump or pushing in the hydraulic oil. However, in other embodiments, the boosting program may utilize other means, such as a piston.

As shown in Fig. 4, the brake method of the present invention is applied to the control device 31 of the enclosed hydraulic brake device 30. The enclosed brake device 30 includes a pressure accumulation solenoid valve 351 and a gas line 37 in addition to the brake circuit 33 and the pressure accumulation device 35 described above. The brake circuit 33 includes a fuel tank 332, an oil discharge solenoid valve 333, a gear pump 334, a check valve 335, a pressure sensor 336, an electro-hydraulic proportional control valve 337, and a return oil solenoid valve 338 connected through the oil pipe 331. The pressure accumulating device 35 and the pressure accumulating solenoid valve 351 are also connected to the brake circuit 33 through the oil pipe 353. The oil pipe 353 is also connected to the check valve 355 to prevent the hydraulic oil from flowing backward to the oil return solenoid valve 338. The gas line 37 is connected to the brake circuit 33 and supplies gas to the brake circuit 33 to bring the hydraulic oil of the brake circuit 33 back to the oil tank 332. In order to avoid the inflow of hydraulic oil, the gas line 37 includes a gas solenoid valve 371 for blocking hydraulic oil and a gas tube 373 for inputting gas. Gear pump 334 is coupled to load 50 and is carried by load 50.

As shown in FIG. 5, the above steps of providing an instruction, such as step S11 and step S14, are through a wireless communication program. The wireless communication program includes the handheld electronic device 70 generating and transmitting a pressure accumulation command or a brake command. Then, the control device 31 of the closed type hydraulic brake device receives the pressure accumulation command or the brake command. Finally, the control device 31 executes the pressure accumulation command or the brake command.

In this embodiment, the wireless communication program is transmitted through the Bluetooth transmission technology. In other embodiments, the wireless communication program can also be transmitted through a communication network or an infrared technology. The handheld electronic device can be a smart phone or a tablet. In other words, the control device can remotely control through the remote end.

Referring to FIG. 5, the control device 31 includes a programmable controller (PLC) 311 and a signal converter 313. The programmable controller controls the solenoid valves 333, 338, 351, 371, and the load. 50 and the operation of the gear pump 334. The signal converter 313 is used to convert the digital signal into an analog signal or convert the analog signal into a digital signal to control the electro-hydraulic proportional control valve 337 and the pressure accumulating device 35. In addition to generating and transmitting commands, the handheld electronic device 70 can also receive information returned by the control device to monitor the device.

In this way, the braking method of the closed type hydraulic brake device of the present invention can be automatically controlled through the arrangement of the program logic, or can be manually controlled by the user, and can be remotely controlled.

Finally, it is emphasized that the constituent elements disclosed in the foregoing embodiments are merely illustrative and are not intended to limit the scope of the present invention. The alternatives or variations of other equivalent elements are also covered by the scope of the patent application of the present application. .

Claims (10)

A brake method for a closed hydraulic brake device, comprising: providing a pressure accumulation command; performing pressure accumulation according to the pressure accumulation command to temporarily store hydraulic oil in a pressure accumulating device; and draining a fuel pipe of a brake circuit according to a system condition Internal hydraulic oil; providing a brake command; and executing the brake according to the brake command to force the hydraulic oil in the pressure accumulation device to be discharged into the oil pipe of the brake circuit to brake a load in the rotation. The brake method of the closed type hydraulic brake device according to claim 1, wherein the performing the pressure accumulation comprises: supplying a hydraulic oil to the oil pipe of the brake circuit of a brake tank of the brake circuit; and applying hydraulic oil from the brake The oil pipe of the circuit is sucked into the pressure accumulator. A method of braking a closed type hydraulic brake device according to claim 2, wherein the suction into the pressure accumulating device is to reduce a gas pressure inside the pressure accumulating device. The brake method of the closed type hydraulic brake device according to the first aspect of the invention, wherein the draining the hydraulic oil in the oil pipe of the brake circuit comprises: suspending a fuel tank of the brake circuit to supply hydraulic oil to the oil pipe of the brake circuit; And injecting gas into the oil pipe of the brake circuit. The brake method of the closed type hydraulic brake device according to claim 1 or 4, wherein the system condition is an oil temperature of the hydraulic oil in the oil pipe of the brake circuit or an operation time of the load. The method of braking a closed type hydraulic brake device according to claim 1, wherein the forced hydraulic oil discharge in the pressure accumulating device is transmitted through a supercharging process. A method for braking a closed type hydraulic brake device according to claim 6 of the patent application, wherein The pressurization procedure is to increase the gas pressure in the accumulator. The method of braking a closed type hydraulic brake device according to claim 1, wherein the providing of the pressure accumulation command and the providing of the brake command are transmitted through a wireless communication program. The method for braking a closed type hydraulic brake device according to claim 8, wherein the wireless communication program comprises: a handheld electronic device generating and transmitting the pressure accumulation command or the brake command; the closed type hydraulic brake device A control device receives the pressure accumulation command or the brake command; and the control device executes the pressure accumulation command or the brake command. The method of braking a closed type hydraulic brake device according to claim 8 or 9, wherein the wireless communication program is transmitted through a Bluetooth transmission technology.