阅读说明：本技术 一种起重机械电力液压制动器的安全监测系统 (Safety monitoring system of electric hydraulic brake of hoisting machinery ) 是由 龚文 蒋瑜 高飞 黄正球 许海翔 吴峰崎 于 2020-07-01 设计创作，主要内容包括：本发明涉及一种起重机械电力液压制动器的安全监测系统,属于起重机械安全监测技术领域。电力液压制动器中设有安全监测系统,安全监测系统包括压力监测装置、位移监测装置、监测控制装置和监测报警装置；压力监测装置通过监测控制装置与监测报警装置连接；位移监测装置通过监测控制装置与监测报警装置连接。本发明提供的起重机械电力液压制动器的安全监测系统和方法,对起重机械电力液压制动器的工作状态进行实时安全监测,及时发现制动力过大或过小,电力液压推动器推力不够等故障,保障起重机械安全使用。(The invention relates to a safety monitoring system of an electro-hydraulic brake of hoisting machinery, belonging to the technical field of safety monitoring of hoisting machinery. The electric hydraulic brake is internally provided with a safety monitoring system, and the safety monitoring system comprises a pressure monitoring device, a displacement monitoring device, a monitoring control device and a monitoring alarm device; the pressure monitoring device is connected with the monitoring alarm device through the monitoring control device; the displacement monitoring device is connected with the monitoring alarm device through the monitoring control device. The safety monitoring system and the method for the electric hydraulic brake of the hoisting machinery, provided by the invention, can be used for carrying out real-time safety monitoring on the working state of the electric hydraulic brake of the hoisting machinery, finding out faults that the braking force is too large or too small, the thrust of an electric hydraulic pusher is insufficient and the like in time, and ensuring the safe use of the hoisting machinery.)

1. A safety monitoring system for an electro-hydraulic brake of a lifting machine, the electro-hydraulic brake comprising an electro-hydraulic thruster and a brake spring mechanism; a brake spring mechanism is arranged adjacent to the electric hydraulic thruster, a first push rod is arranged in the electric hydraulic thruster, and the first push rod is connected with a second push rod arranged in the brake spring mechanism through a link mechanism; be equipped with safety monitoring system among the electro-hydraulic brake, its characterized in that: the safety monitoring system comprises a pressure monitoring device, a displacement monitoring device, a monitoring control device and a monitoring alarm device; the pressure monitoring device is connected with the monitoring alarm device through the monitoring control device; the displacement monitoring device is connected with the monitoring alarm device through the monitoring control device.

2. The safety monitoring system for the electro-hydraulic brake of the hoisting machinery according to claim 1, characterized in that: and a pressure monitoring device for monitoring the hydraulic oil pressure in real time is arranged in a high-pressure cavity arranged in the electric hydraulic thruster.

3. The safety monitoring system for the electro-hydraulic brake of the hoisting machinery according to claim 2, characterized in that: and a displacement monitoring device for monitoring the displacement of the push rod in real time is arranged at the maximum stroke position and the minimum stroke position of the push rod of the electro-hydraulic pusher.

4. A safety monitoring system for an electro-hydraulic brake of a hoisting machine according to claim 3, characterized in that: the monitoring control device is provided with a processor which receives signals transmitted by the pressure monitoring device and the displacement monitoring device, analyzes and judges the state of the electric hydraulic brake and sends state information to the monitoring alarm device.

5. The safety monitoring system for the electro-hydraulic brake of the hoisting machinery according to claim 4, characterized in that: the monitoring and alarming device is provided with a processing system which is used for receiving the state information of the electric hydraulic brake sent by the monitoring and controlling device and sending the state information to a device management personnel, a mobile terminal of a brake maintenance unit or a display terminal of a hoisting machinery operator.

6. A safety monitoring system application method of an electric hydraulic brake of hoisting machinery is characterized in that: the method comprises the following steps:

step 1: connecting the monitoring control device with the brake;

step 2: monitoring a pressure P value monitored by a pressure monitoring device;

and step 3: monitoring the position of the push rod measured by the displacement monitoring device;

and 4, step 4: and (4) fault judgment: the monitoring control device receives a brake opening signal, if the pressure P measured by the pressure monitoring device is less than or equal to Pmin and the push rod is monitored by the displacement monitoring device to be at the minimum stroke, the electric hydraulic thruster is judged to have a thrust insufficiency fault; if the pressure P measured by the pressure monitoring device is less than or equal to Pmin and the push rod is monitored by the displacement monitoring device to be at the maximum stroke, judging that the electric hydraulic thruster has a fault of insufficient braking force of the braking spring;

the monitoring control device receives a brake opening signal, and if the pressure P measured by the pressure monitoring device is larger than or equal to Pmax and the displacement monitoring device monitors that the push rod is at the minimum stroke, the electric hydraulic thruster is judged to be blocked or the brake spring has an overlarge braking force; if the pressure P measured by the pressure monitoring device is not less than Pmax and the displacement monitoring device monitors that the push rod is at the maximum stroke, the electric hydraulic thruster is judged to have a fault of overlarge braking force of the brake spring;

the monitoring control device receives a brake closing signal, if the pressure P measured by the pressure monitoring device is less than or equal to Pmin and the push rod is monitored by the displacement monitoring device to be at the minimum stroke, the electric hydraulic thruster is judged to have a fault of insufficient braking force of a braking spring; if the pressure P measured by the pressure monitoring device is less than or equal to Pmin and the push rod is monitored by the displacement monitoring device to be positioned at the maximum stroke, the electric hydraulic pusher is judged to have a fault of blockage or serious insufficient braking force of the brake spring;

the monitoring control device receives a brake closing signal, and if the pressure P measured by the pressure monitoring device is larger than or equal to Pmax and the displacement monitoring device monitors that the push rod is at the minimum stroke, the electric hydraulic thruster is judged to have a fault of overlarge braking force of a braking spring; if the pressure P measured by the pressure monitoring device is not less than Pmax and the push rod is at the maximum stroke position monitored by the displacement monitoring device, it is judged that the electric hydraulic thruster has the faults of overlarge braking force of the braking spring and blockage of the oil return channel of the thruster.

Technical Field

The invention relates to a safety monitoring system of an electro-hydraulic brake of hoisting machinery, belonging to the technical field of safety monitoring of hoisting machinery.

Background

The electric hydraulic brake is a brake device widely used on special equipment such as hoisting machinery, and common faults include too large or too small brake force, insufficient thrust of an electric hydraulic thruster and the like. At present, the faults can be judged by technicians according to experience through daily observation of phenomena such as hook slipping of a lifting mechanism, sliding of a running mechanism, braking impact, non-action of a pusher and the like. If the fault is not found and eliminated in time, the brake is easy to fail, and further the hoisting mechanical accident is caused. Therefore, there is a need in the art for a system capable of safely monitoring the operating state of an electro-hydraulic brake of a hoisting machine, which can timely find out faults such as too large or too small braking force, insufficient thrust of an electro-hydraulic pusher, and the like, thereby avoiding safety accidents of the hoisting equipment and ensuring safe use of the hoisting machine.

Disclosure of Invention

The invention aims to solve the technical problems of how to safely monitor the working state of the electric hydraulic brake of the hoisting machinery, find faults in time and avoid safety accidents of the hoisting machinery.

In order to solve the above problems, the present invention provides a safety monitoring system for an electro-hydraulic brake of a hoisting machine, wherein the electro-hydraulic brake comprises an electro-hydraulic thruster and a brake spring mechanism; a brake spring mechanism is arranged adjacent to the electric hydraulic thruster, a first push rod is arranged in the electric hydraulic thruster, and the first push rod is connected with a second push rod arranged in the brake spring mechanism through a link mechanism; the electric hydraulic brake is internally provided with a safety monitoring system, and the safety monitoring system comprises a pressure monitoring device, a displacement monitoring device, a monitoring control device and a monitoring alarm device; the pressure monitoring device is connected with the monitoring alarm device through the monitoring control device; the displacement monitoring device is connected with the monitoring alarm device through the monitoring control device.

Preferably, a pressure monitoring device for monitoring the pressure of the hydraulic oil in real time is arranged in a high-pressure cavity arranged on the electric hydraulic thruster.

Preferably, a maximum stroke position and a minimum stroke position of the push rod of the electro-hydraulic thruster are provided with displacement monitoring devices for monitoring the displacement of the push rod in real time.

Preferably, the monitoring control device is provided with a processor for receiving signals transmitted by the pressure monitoring device and the displacement monitoring device, analyzing and judging the state of the electric hydraulic brake, and sending the state information to the monitoring alarm device.

Preferably, the monitoring and alarming device is provided with a processing system for receiving the state information of the electric hydraulic brake sent by the monitoring and controlling device and sending the state information to an equipment manager, a mobile terminal of a brake maintenance unit or a display terminal of a hoisting machinery operator.

The invention provides a use method of a safety monitoring system of an electro-hydraulic brake of hoisting machinery, which comprises the following steps:

step 1: connecting the monitoring control device with the brake;

step 2: monitoring a pressure P value monitored by a pressure monitoring device;

and step 3: monitoring the position of the push rod measured by the displacement monitoring device;

and 4, step 4: and (4) fault judgment: the monitoring control device receives a brake opening signal, if the pressure P measured by the pressure monitoring device is less than or equal to Pmin and the push rod is monitored by the displacement monitoring device to be at the minimum stroke, the electric hydraulic thruster is judged to have a thrust insufficiency fault; if the pressure P measured by the pressure monitoring device is less than or equal to Pmin and the push rod is monitored by the displacement monitoring device to be at the maximum stroke, judging that the electric hydraulic thruster has a fault of insufficient braking force of the braking spring;

the monitoring control device receives a brake opening signal, and if the pressure P measured by the pressure monitoring device is larger than or equal to Pmax and the displacement monitoring device monitors that the push rod is at the minimum stroke, the electric hydraulic thruster is judged to be blocked or the brake spring has an overlarge braking force; if the pressure P measured by the pressure monitoring device is not less than Pmax and the displacement monitoring device monitors that the push rod is at the maximum stroke, the electric hydraulic thruster is judged to have a fault of overlarge braking force of the brake spring;

the monitoring control device receives a brake closing signal, if the pressure P measured by the pressure monitoring device is less than or equal to Pmin and the push rod is monitored by the displacement monitoring device to be at the minimum stroke, the electric hydraulic thruster is judged to have a fault of insufficient braking force of a braking spring; if the pressure P measured by the pressure monitoring device is less than or equal to Pmin and the push rod is monitored by the displacement monitoring device to be positioned at the maximum stroke, the electric hydraulic pusher is judged to have a fault of blockage or serious insufficient braking force of the brake spring;

the monitoring control device receives a brake closing signal, and if the pressure P measured by the pressure monitoring device is larger than or equal to Pmax and the displacement monitoring device monitors that the push rod is at the minimum stroke, the electric hydraulic thruster is judged to have a fault of overlarge braking force of a braking spring; if the pressure P measured by the pressure monitoring device is not less than Pmax and the push rod is at the maximum stroke position monitored by the displacement monitoring device, it is judged that the electric hydraulic thruster has the faults of overlarge braking force of the braking spring and blockage of the oil return channel of the thruster.

Compared with the prior art, the invention has the following beneficial effects:

the invention provides a safety monitoring system and a safety monitoring method for an electric hydraulic brake of a hoisting machine, which are used for safely monitoring the working state of the electric hydraulic brake of the hoisting machine, timely finding out faults of overlarge or undersize braking force, insufficient thrust of an electric hydraulic pusher and the like, and ensuring the safe use of the hoisting machine.

Drawings

Fig. 1 is a schematic structural diagram of an electro-hydraulic brake according to the present invention.

Fig. 2 is a working schematic diagram of the safety monitoring system of the invention.

Reference numerals: 1. an electro-hydraulic thruster; 2. a pressure monitoring device; 3. a displacement monitoring device; 4. a brake spring mechanism; 5. a link mechanism;

Detailed Description

In order to make the invention more comprehensible, preferred embodiments are described in detail below with reference to the accompanying drawings:

as shown in fig. 1-2, the present invention provides a safety monitoring system for an electro-hydraulic brake of a hoisting machine, the electro-hydraulic brake comprises an electro-hydraulic pusher 1 and a brake spring mechanism 4; a brake spring mechanism 4 is arranged adjacent to the electro-hydraulic thruster 1, a first push rod is arranged in the electro-hydraulic thruster 1, and the first push rod is connected with a second push rod arranged in the brake spring mechanism 4 through a link mechanism 5; a safety monitoring system is arranged in the electric hydraulic brake, and comprises a pressure monitoring device 2, a displacement monitoring device 3, a monitoring control device and a monitoring alarm device; the pressure monitoring device 2 is connected with the monitoring alarm device through the monitoring control device; the displacement monitoring device 3 is connected with the monitoring alarm device through the monitoring control device. And a pressure monitoring device 2 for monitoring the hydraulic oil pressure in real time is arranged in a high-pressure cavity arranged in the electric hydraulic thruster 1. And a displacement monitoring device 3 for monitoring the displacement of the push rod in real time is arranged at the maximum stroke position and the minimum stroke position of the push rod of the electro-hydraulic thruster 1. The monitoring control device is provided with a processor which receives signals transmitted by the pressure monitoring device 2 and the displacement monitoring device 1, analyzes and judges the state of the electric hydraulic brake and sends state information to the monitoring alarm device. The monitoring and alarming device is provided with a processing system which is used for receiving the state information of the electric hydraulic brake sent by the monitoring and controlling device and sending the state information to a device management personnel, a mobile terminal of a brake maintenance unit or a display terminal of a hoisting machinery operator.

The invention relates to a using method of a safety monitoring system of an electro-hydraulic brake of hoisting machinery,

1: the monitoring control device receives a brake opening signal, if the pressure P measured by the pressure monitoring device is less than or equal to Pmin and the push rod is monitored by the displacement monitoring device to be at the minimum stroke, the electric hydraulic thruster is judged to have a thrust insufficiency fault; if the pressure P measured by the pressure monitoring device is less than or equal to Pmin and the push rod is monitored by the displacement monitoring device to be at the maximum stroke, judging that the electric hydraulic thruster has a fault of insufficient braking force of the braking spring;

2: the monitoring control device receives a brake opening signal, and if the pressure P measured by the pressure monitoring device is larger than or equal to Pmax and the displacement monitoring device monitors that the push rod is at the minimum stroke, the electric hydraulic thruster is judged to be blocked or the brake spring has an overlarge braking force; if the pressure P measured by the pressure monitoring device is not less than Pmax and the displacement monitoring device monitors that the push rod is at the maximum stroke, the electric hydraulic thruster is judged to have a fault of overlarge braking force of the brake spring;

3: the monitoring control device receives a brake closing signal, if the pressure P measured by the pressure monitoring device is less than or equal to Pmin and the push rod is monitored by the displacement monitoring device to be at the minimum stroke, the electric hydraulic thruster is judged to have a fault of insufficient braking force of a braking spring; if the pressure P measured by the pressure monitoring device is less than or equal to Pmin and the push rod is monitored by the displacement monitoring device to be positioned at the maximum stroke, the electric hydraulic pusher is judged to have a fault of blockage or serious insufficient braking force of the brake spring;

4: the monitoring control device receives a brake closing signal, and if the pressure P measured by the pressure monitoring device is larger than or equal to Pmax and the displacement monitoring device monitors that the push rod is at the minimum stroke, the electric hydraulic thruster is judged to have a fault of overlarge braking force of a braking spring; if the pressure P measured by the pressure monitoring device is not less than Pmax and the push rod is at the maximum stroke position monitored by the displacement monitoring device, it is judged that the electric hydraulic thruster has the faults of overlarge braking force of the braking spring and blockage of the oil return channel of the thruster.

While the invention has been described with respect to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention. Those skilled in the art can make various changes, modifications and equivalent arrangements, which are equivalent to the embodiments of the present invention, without departing from the spirit and scope of the present invention, and which may be made by utilizing the techniques disclosed above; meanwhile, any changes, modifications and variations of the above-described embodiments, which are equivalent to those of the technical spirit of the present invention, are within the scope of the technical solution of the present invention.