Hydraulic winch testing device and testing method thereof

Abstract

The invention relates to a hydraulic winch testing device and a testing method thereof, and belongs to the technical field of winch testing equipment. Comprising a tower, a winch assembly, a hydraulic power assembly and an electric control assembly, a balance weight is slidably installed on the tower, and the winch assembly is provided with a winding drum and a parking brake; one end of the winding drum power shaft is connected with the parking brake, the other end of the winding drum power shaft is connected with a hydraulic motor of the hydraulic power assembly, a steel wire rope is sleeved on the winding drum, and one end of the steel wire rope is connected with the balance weight. The electric control assembly comprises a control module and a data acquisition assembly, and the control module is connected with the hydraulic motor and the parking brake; the data acquisition assembly comprises sensors, and the sensors are installed on the winch assembly and the hydraulic power assembly respectively so as to acquire operation data in the test process. The test device is low in test flow difficulty and high in test result precision. The device has a manual control mode and an automatic control mode, and is wide in product application range, high in automation degree and high in test efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of winch testing equipment, and in particular to a hydraulic winch testing device and a testing method thereof. Background Art

[0002] A winch is a lifting machine mainly used for lifting objects. It consists of motors, reducers, gears, brakes, drums, steel ropes and other components. The operation of a winch requires special working conditions such as high speed, heavy load and repeated operation, so its safety and reliability are very important.

[0003] The existing hoist products need to be tested for product functionality before leaving the factory or during the new product development and testing phase to ensure the safety and stability of the equipment. The existing hoist test device mainly includes a hoisting mechanism, a bench and a control device. The hoisting mechanism is driven by hydraulic pressure to drive the heavy object on the bench to perform test items such as lifting, lowering and braking. The existing test device is mainly used to detect whether the functionality of the product meets the requirements. Each test item mainly adopts manual testing or relatively simple automatic testing. The test cycle is long, and there is a problem of low efficiency when testing batch products before leaving the factory. In addition, the product applicability of the existing test device is low. When testing products of different specifications, the test device needs to be debugged before the test to adapt to the product. Especially when testing new products, it is necessary to debug the product adaptability before each test, resulting in low test efficiency and increasing the new product development cycle. Therefore, a hydraulic hoist test device is urgently needed to solve the problems of simple test control, large workload, low test efficiency and low degree of automation control when the existing hoist test device is used for product testing. Summary of the invention

[0004] The object of the present invention is to provide a hydraulic winch test device and a test method thereof to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a hydraulic winch test device, comprising a tower, a winch assembly, a hydraulic power assembly and an electronic control assembly, a counterweight is slidably mounted on the tower, and the winch assembly is provided with a drum and a parking brake; one end of the power shaft of the drum is connected to the power end of the parking brake, and the other end is connected to the hydraulic motor of the hydraulic power assembly, and a steel wire rope is sleeved on the drum, and one end of the steel wire rope is connected to the counterweight; the electronic control assembly comprises a control module and a data acquisition assembly, the control module is respectively connected to the hydraulic motor and the parking brake, and is used to control the drum to rotate or control the parking brake to brake, so as to drive the counterweight to be lifted, lowered and parked along the tower; the data acquisition assembly comprises a plurality of sensors, and the sensors are respectively installed on the winch assembly and the hydraulic power assembly to collect operation data during the test.

[0006] Preferably, a fixed pulley group is rotatably mounted on the tower, and the fixed pulley group includes several fixed pulleys, one of which is mounted on the top of the tower, and the remaining fixed pulleys are mounted on the tower. One end of the wire rope is connected to the drum, and the other end is sequentially passed through the fixed pulleys on the tower, and after the fixed pulley is changed, it is sleeved on the fixed pulley on the top of the tower and connected to the counterweight.

[0007] Preferably, the hydraulic power assembly includes a power pump station, a motor valve group and connecting oil pipes; the power pump station is provided with a drive motor, a hydraulic pump and a hydraulic oil tank; the power end of the drive motor is connected to the hydraulic pump; the motor valve group is provided with a first oil port, a second oil port, a hydraulic motor drive oil port, a hydraulic motor return oil port and a parking brake drive oil port, the motor valve group is connected to the hydraulic pump, the hydraulic oil tank, the hydraulic motor and the parking brake respectively through connecting oil pipes, a hydraulic motor drive oil circuit and a parking brake drive oil circuit are formed in the motor valve group, and a shuttle valve is connected between the hydraulic motor drive oil circuit and the parking brake drive oil circuit, and an overflow valve and a balance valve are connected to the hydraulic motor drive oil circuit.

[0008] Preferably, a reducer is also connected to the power shaft of the reel; the hydraulic motor is connected to the parking brake via a spline, the parking brake is connected to the reducer via a spline, the reducer is connected to the reel via a flange; the reel is connected to the mounting frame via a flange.

[0009] Preferably, the electronic control component is provided with an industrial control cabinet, an observation room and a monitoring component; the control module includes a solenoid valve assembly and a remote control assembly; the solenoid valve assembly includes a hydraulic motor displacement control solenoid valve, a system pressure solenoid valve and a motor control solenoid valve; the hydraulic motor displacement control solenoid valve is installed on the hydraulic motor to adjust the displacement of the hydraulic motor; the system pressure solenoid valve is installed between the output end of the hydraulic pump and the hydraulic oil tank through a connecting oil pipe to adjust the system pressure; the motor control solenoid valve is installed in the oil circuit between the hydraulic pump and the motor valve group; the solenoid valve assembly and the monitoring assembly are electrically connected to the industrial control cabinet, and the industrial control cabinet is electrically connected to the remote control assembly.

[0010] Preferably, oil pressure sensors are installed on the first oil port, the second oil port, the parking brake drive oil port and the hydraulic motor drive oil circuit on the motor valve group, respectively, for collecting the pressure values ​​of the first oil port, the second oil port, the parking oil pressure and the motor drive oil pressure of the hydraulic motor; a system pressure sensor and a motor flow sensor are installed on the output end of the hydraulic pump; a displacement encoder and a drum speed encoder are installed on the drum; a reducer temperature sensor is installed on the reducer, a cooling cycle temperature sensor is installed on the cooling oil channel of the reducer, and scale strips are respectively pasted on the circumferential surfaces of the rotating end and the non-rotating end of the reducer; a tension sensor is installed on the wire rope.

[0011] Preferably, the motor control solenoid valve is a three-position four-way valve, and is provided with two reversing solenoid coils for reversing the three-position four-way valve to control the hydraulic motor to rotate forward or reverse; the remote control component includes a manual control module and an automatic control module, and a data channel path is provided between the manual control module and the automatic control module.

[0012] Preferably, the monitoring component includes a component monitoring device, a visual camera and a display; the component monitoring device includes several monitoring cameras, which are respectively installed at the tower, the power pump station and the drum assembly, for monitoring the operating status of the components; the visual camera is installed on the scale of the reducer, for monitoring the scale value; the monitoring camera and the visual camera are respectively electrically connected to the display, and the display is installed in the observation room.

[0013] The present invention also provides a test method for a hydraulic winch test device, comprising the following steps: S1. First, select the manual control test mode or the automatic control test mode according to the test requirements of the product to be tested; S2. Start the product test of the winch according to the test mode selected in S1; if the manual control test mode is selected, the product test process of the winch is as follows: motor lifting-parking stop and motor lowering-parking stop; if the automatic control test mode is selected, the product test process of the winch is as follows: motor lifting-parking stop-motor lowering-parking stop-motor lowering; S3. If the manual control test mode is selected, before the test, according to the specifications of the winch to be tested and the test requirements, a counterweight of appropriate weight is selected, and the test parameter setting operation is performed on the remote control component; during the test, a manual start trigger is performed on the remote control component, and the counterweight is driven by the hydraulic motor. After it is lifted to the preset target position according to the set value, the hydraulic motor stops driving, the parking brake is applied, and the visual camera takes pictures to complete the motor lifting-parking stop test; then the descending process is manually triggered, and the counterweight is driven by the hydraulic motor. After it is lowered to the preset target position according to the set value, the hydraulic motor stops driving, the parking brake is applied, and the visual camera takes pictures to complete the motor descending-parking stop test; during the above test process, the data acquisition component collects and records the process data of oil pressure value, oil temperature value, motor flow, drum speed and wire rope tension value, and then imports the process data into the automatic control module through the data channel path; If the automatic control test mode is selected, before the test, according to the specifications of the winch to be tested and the test requirements, a counterweight of appropriate weight is selected, and the test parameter setting operation is performed on the remote control component. The test parameters also include the parking stop time. During the test, a start trigger is performed on the remote control component. After the counterweight is driven by the hydraulic motor and lifted to the preset target position according to the set value, the hydraulic motor stops driving, the parking brake is applied, and the visual camera takes pictures. After the parking stop time is over, the motor lowering process starts. After the counterweight is driven by the hydraulic motor and lowered to the preset target position according to the set value, the hydraulic motor stops driving, the parking brake is applied, and the visual camera takes pictures. After the parking stop time is over, the motor lowering process continues until the counterweight is lowered at the set speed. When the drum speed is ≤0rpm, the hydraulic motor stops driving, the counterweight falls to the ground, and the automatic control test is completed. During the above test process, the data acquisition component collects and records the process data of oil pressure value, oil temperature value, motor flow, drum speed and wire rope tension value, and then imports the process data into the automatic control module through the data channel path. S4. According to the product specifications of the winch, by selecting suitable counterweights of different weights and setting different system pressures, repeat the test in S3 to form a system oil pressure-load database; by setting different hydraulic motor displacements, repeat the test in S3 to form an output flow-speed database; then import the system oil pressure-load database and / or the output flow-speed database into the automatic control module.

[0014] Preferably, in S3, in the manual control test mode and the automatic control test mode, the parking stop is manually triggered or automatically triggered when the remote control component detects that the counterweight has moved to the target position; the test parameters include setting the current or voltage value of the hydraulic motor displacement control solenoid valve, the system pressure solenoid valve and the motor control solenoid valve; setting the counterweight lifting displacement value and the counterweight lowering displacement value; setting the parking oil pressure threshold value, so as to turn on or off the visual camera to record the scale value on the reducer end face when triggering the parking stop; In the manual control test mode, after the parking brake is triggered, when the parking oil pressure value is set to ≤ the system pressure, the visual camera will record the scale value in real time for the first time. When the parking oil pressure value is ≤0.3MPa, the visual camera will record the scale value in real time for the second time to record the sliding displacement caused by system pressure relief; in the automatic control test mode, after the parking brake is triggered, when the parking oil pressure value is set to ≤ the system pressure, the visual camera will record the scale value in real time for the first time. When the parking oil pressure value is ≤0.3MPa, the visual camera will record the scale value in real time for the second time to record the sliding displacement caused by system pressure relief; the stop time of the parking stop time starts from the second real-time camera of the visual camera. After the parking stop time ends, the visual camera will record the scale value in real time for the third time. Beneficial Effects

[0015] The test device of the present invention is formed by a tower, a winch assembly, a hydraulic power assembly and an electric control assembly to form a winch mechanical assembly-electrical control-hydraulic drive, that is, a mechanical-electrical-hydraulic integrated test device, to perform a functional test of a winch product. A counterweight is slidably installed on the tower, and the winch assembly is provided with a drum and a parking brake; one end of the power shaft of the drum is connected to the power end of the parking brake, and the other end is connected to the hydraulic motor of the hydraulic power assembly, and a steel wire rope is sleeved on the drum, and one end of the steel wire rope is connected to the counterweight. The electric control assembly includes a control module and a data acquisition assembly, and the operating status of the hydraulic pipeline parts and the electric control components of the hydraulic power assembly and the electric control assembly during the test process is monitored and fed back through the acquisition module, so as to realize the full process test collection of the winch mechanical-electrical control-hydraulic integrated product. On the basis of realizing the factory test and type test verification of the winch integrated product, the performance of the new product is tested through the manual control module, and the test module data is imported into the automatic control module, so as to finally realize the intelligent test mode of the product, which is suitable for the research and development test of new products and also for batch factory test.

[0016] The present invention performs automatic control testing through an automatic control module, and sets the factory test action of the winch under the target counterweight state. The control process of the present invention is suitable for the factory test of hydraulic motor driven winches. After the automatic control test is started, the test device automatically performs an automated test according to the test process of motor lifting-parking-motor lowering-parking-motor lowering. During the test, the test process is automatically controlled, and the displacement threshold is set by pre-arranging sensor signals to realize the self-judgment test control of the device, which can improve the test operation efficiency and improve safety and reliability.

[0017] The test device of the present invention comprises a tower, a hydraulic power assembly, an electric control assembly and a winch assembly. The electric control assembly drives the hydraulic power assembly to implement the test verification of the winch assembly installed in the tower, and the data acquisition assembly in the electric control assembly can realize the collection of test process data and feed it back to the control module in the electric control assembly, so as to realize the remote control target of the test process and reduce the accident rate caused by abnormal test process.

[0018] The power shaft of the reel of the present invention is connected with a reducer. By pasting a scale on the reducer and setting a visual camera at the scale, the relative sliding displacement is recorded by video through the relative position of the scale. This can achieve the purpose of remotely testing the sliding displacement of the counterweight caused by system pressure relief while ensuring relative accuracy.

[0019] In the test method provided by the present invention, load input can be performed in a gradient according to the specifications of the winch, and the data of the winch product under the target working conditions can be tested, and finally a system oil pressure-load and flow-speed database can be formed. Because the hydraulic motor is driven by the output system pressure of the power pump station, the lifting / lowering of different counterweights can be achieved. When the hydraulic motor lifts / lowers different counterweights under the target displacement through experiments, the power pump station is required to provide system pressure, establish a system oil pressure-load database, and then input the data into the automatic control module to achieve automatic control of the target product test. The output flow value of the power pump station determines the speed of motor lifting / lowering. The drum speed corresponding to the different output flows of the power pump station under the lifting / lowering state of the hydraulic motor with different counterweights is measured through experiments to establish an output flow-speed database to achieve automatic control of the target product test.

[0020] The test device of the present invention is equipped with two absolute value encoders, one of which collects the reel rotation speed and the other collects the counterweight displacement. The encoder collects the count pulses at the moment before the reel starts to run and at the current moment after the reel starts to run, and analyzes the number of pulses output by the encoder when the reel rotates one circle. By measuring the number of encoder pulses per unit time, the displacement of the counterweight and the reel rotation speed in the operation cycle can be calculated. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of a hydraulic winch test device of an embodiment; Figure 2 A schematic diagram of a partial structure of a hydraulic winch test device according to an embodiment (1); Figure 3 A schematic diagram of a partial structure of a hydraulic winch test device according to an embodiment (2); Figure 4 A schematic diagram of a partial structure of a hydraulic winch test device according to an embodiment (3); Figure 5 A schematic diagram of hydraulic control of a hydraulic winch test device according to an embodiment; Figure 6 It is a structural schematic diagram of a motor control solenoid valve of a hydraulic winch test device of an embodiment. DETAILED DESCRIPTION

[0022] The technical solution of the present invention is described in detail below with reference to the accompanying drawings, but the protection scope of the present invention is not limited to the embodiments.

[0023] See also Figure 1-Figure 6The present embodiment provides a hydraulic winch test device, including a tower 1, a winch assembly 4, a hydraulic power assembly 2 and an electric control assembly 3. The winch assembly 4 is provided with a drum 21 and a parking brake 19; one end of the power shaft of the drum 21 is connected to the power end of the parking brake, and the other end is connected to the hydraulic motor 10 of the hydraulic power assembly, and a steel wire rope 7 is sleeved on the drum. A fixed pulley block 8 is rotatably installed on the tower 1, and the fixed pulley block includes a plurality of fixed pulleys, one of which is installed on the tower The top of the frame, the other fixed pulleys are installed on the tower, one end of the wire rope is connected to the drum, and the other end is passed through the fixed pulleys on the tower in turn, and after the fixed pulleys are changed, they are sleeved on the fixed pulleys on the top of the tower and connected to the counterweight 5; the power shaft of the drum 21 of this embodiment is also connected with a reducer 20; the hydraulic motor 10 is connected to the parking brake 19 through a spline, the parking brake is connected to the reducer through a spline, and the reducer is connected to the drum through a flange; the drum is connected to the mounting frame 22 through a flange. The electric control component includes a control module and a data acquisition component, the control module is respectively connected to the hydraulic motor and the parking brake, and is used to control the drum to rotate or control the parking brake to brake, so as to drive the counterweight to rise, fall and stop along the tower; the data acquisition component 13 includes a number of sensors, which are respectively installed on the winch component and the hydraulic power component to collect operation data during the test.

[0024] The hydraulic power assembly of this embodiment includes a power pump station 9, a motor valve group 11 and a connecting oil pipe 12; a drive motor, a hydraulic pump and a hydraulic oil tank are arranged in the power pump station 9; the power end of the drive motor is connected to the hydraulic pump; the motor valve group is provided with a first oil port, a second oil port, a hydraulic motor drive oil port, a hydraulic motor return oil port and a parking brake drive oil port, the motor valve group is connected to the hydraulic pump, the hydraulic oil tank, the hydraulic motor and the parking brake respectively through connecting oil pipes, a hydraulic motor drive oil circuit and a parking brake drive oil circuit are formed in the motor valve group, and a shuttle valve is connected between the hydraulic motor drive oil circuit and the parking brake drive oil circuit, and an overflow valve and a balance valve are connected to the hydraulic motor drive oil circuit.

[0025] The electric control component of this embodiment is provided with an industrial control cabinet 14, an observation room and a monitoring component; the control module includes a solenoid valve component 15 and a remote control component; the solenoid valve component 15 includes a hydraulic motor displacement control solenoid valve A002, a system pressure solenoid valve A003 and a motor control solenoid valve; the hydraulic motor displacement control solenoid valve A002 is installed on the hydraulic motor 10, and is used to adjust the displacement of the hydraulic motor; the system pressure solenoid valve A003 is installed between the output end of the hydraulic pump and the hydraulic oil tank through a connecting oil pipe, and is used to adjust the system pressure; the motor control solenoid valve is installed in the oil circuit between the hydraulic pump and the motor valve group; the solenoid valve component 15 and the monitoring component are electrically connected to the industrial control cabinet 14, and the industrial control cabinet is electrically connected to the remote control component. The motor control solenoid valve of this embodiment is a three-position four-way valve, see Figure 6 , and it is provided with two reversing electromagnetic coils AO04A and AO04B for reversing the three-position four-way valve to control the hydraulic motor to rotate forward or reverse; the remote control component includes a manual control module and an automatic control module, and a data channel path is provided between the manual control module and the automatic control module. Further, the first oil port, the second oil port, the parking brake drive oil port and the hydraulic motor drive oil circuit on the motor valve group 11 are respectively installed with oil pressure sensors, namely AI01, AI02, AI03 and AI04, to collect the pressure values ​​of the first oil port, the second oil port, the parking oil pressure and the motor drive oil pressure of the hydraulic motor; the output end of the hydraulic pump is installed with a system pressure sensor AI11 and a motor flow sensor AI10; the drum is installed with a displacement encoder AI05 and a drum speed encoder AI06; the reducer is installed with a reducer temperature sensor, the cooling oil channel of the reducer is installed with a cooling cycle temperature sensor, and the circumferential surface of the rotating end and the non-rotating end of the reducer is respectively pasted with a scale bar 22; the wire rope is installed with a tension sensor AI13.

[0026] In addition, the monitoring components of this embodiment include component monitoring equipment, visual camera AI12 and a display; the component monitoring equipment includes several monitoring cameras, which are respectively installed at the tower, power pump station and drum assembly for monitoring the operating status of the components; the visual camera is installed on the scale of the reducer for monitoring the scale value; the monitoring camera and the visual camera are respectively electrically connected to the display, and the display is installed in the observation room.

[0027] This embodiment also provides a test method for a hydraulic winch test device, comprising the following steps: S1. First, select the manual control test mode or the automatic control test mode according to the test requirements of the product to be tested; S2. Start the product test of the winch according to the test mode selected in S1; if the manual control test mode is selected, the product test process of the winch is as follows: motor lifting-parking stop and motor lowering-parking stop; if the automatic control test mode is selected, the product test process of the winch is as follows: motor lifting-parking stop-motor lowering-parking stop-motor lowering; S3. If the manual control test mode is selected, before the test, according to the specifications of the winch to be tested and the test requirements, select the appropriate weight 5, and set the test parameters on the remote control component; during the test, perform a manual start trigger on the remote control component. First, the system pressure solenoid valve A003 is energized to adjust the system pressure to 35Mpa, the hydraulic motor displacement control solenoid valve A002 is energized to adjust the hydraulic motor displacement to the maximum, and the reversing solenoid coil AO04A of the motor control solenoid valve is energized to drive the motor control solenoid valve to reversing to the motor up position to connect the hydraulic drive oil. The power oil of the hydraulic pump drives the hydraulic motor to rotate through the oil circuit. The counterweight is driven by the hydraulic motor to lift according to the set value. The manual control module monitors the displacement encoder AI05 in real time to determine whether the drum is lifted normally. If the displacement remains unchanged or decreases, AO04A, AO02 and AO03 are controlled to lose power, and the system reports an error to remind the operator to stop and troubleshoot. If the displacement detection is normal, the manual control module adjusts the current of AO04A according to the potentiometer to adjust the lifting speed. After the counterweight moves to the preset target position, AO04A loses power to 0mA within 0.2s. AO03 recovers to 0mA within 0.5s, the hydraulic motor stops driving, the parking brake is applied, and the visual camera takes pictures. The specific process is: after the parking brake is triggered, when the parking oil pressure value AI03 is set ≤ system pressure, the visual camera takes a real-time picture for the first time to record the scale value. When the parking oil pressure value AI03 ≤ 0.3MPa, the visual camera AI12 takes a real-time picture for the second time to record the scale value, and records the sliding displacement caused by system pressure relief to complete the motor lifting-parking stop test; then manually trigger the descending process. This process is similar to the lifting process and will not be repeated here. The difference is that the reversing electromagnetic coil AO04B of the motor control electromagnetic valve is electrically reversed to connect the PB channel of the hydraulic drive oil circuit. After the counterweight is driven by the hydraulic motor and drops to the preset target position according to the set value, the hydraulic motor stops driving, the parking brake is applied, and the visual camera takes pictures. The process here is the same as the above process and will not be repeated here to complete the motor drop-parking stop test; during the above test process, the data acquisition component collects and records the process data of oil pressure value, oil temperature value, motor flow, drum speed and wire rope tension value, and then imports the process data into the automatic control module through the data channel path; If the automatic control test mode is selected, before the test, according to the specifications of the winch to be tested and the test requirements, a counterweight of appropriate weight is selected, and the test parameter setting operation is performed on the remote control component. The test parameters also include the parking stop time; during the test, a start trigger is performed on the remote control component. This process is similar to the aforementioned manual control mode lifting process and is not repeated here. After the counterweight is driven by the hydraulic motor and lifted to the preset target position according to the set value, the hydraulic motor stops driving and the parking brake is applied. After the parking brake is triggered, when the parking oil pressure value AI03 is set to be ≤ system pressure, the visual camera records the scale value in real time for the first time. When the parking oil pressure value AI03 is ≤0.3MPa, the visual camera records the scale value in real time for the second time to record the sliding displacement caused by system pressure relief; the parking stop time of this embodiment is 3min, and the stop time starts from the second real-time camera of the visual camera. After the parking stop time ends, the visual camera records the scale value in real time for the third time; after the parking stop time ends, the motor starts In the descending process, the counterweight is driven by the hydraulic motor and descends to the preset target position according to the set value. Then the hydraulic motor stops driving and the parking brake is applied. After the parking brake is triggered, when the parking oil pressure value is set to be ≤ system pressure, the visual camera records the scale value for the fourth time in real time. When the parking oil pressure value is ≤0.3MPa, the visual camera records the scale value for the fifth time in real time, and records the sliding displacement caused by system pressure relief. The parking stop time of this embodiment is 3min. The stop time starts from the fifth real-time camera of the visual camera. After the parking stop time is over, the visual camera records the scale value for the sixth time in real time. After the parking stop time is over, the motor descending process continues until the counterweight descends at the set speed. When the drum speed is ≤0rpm, the hydraulic motor stops driving, the counterweight falls to the ground, and the automatic control test is completed. During the above test process, the data acquisition component collects and records the process data of oil pressure value, oil temperature value, motor flow, drum speed and wire rope tension value, and then imports the process data into the automatic control module through the data channel path. S4. According to the product specifications of the winch, by selecting suitable counterweights of different weights and setting different system pressures, repeat the test in S3 to form a system oil pressure-load database; by setting different hydraulic motor displacements, repeat the test in S3 to form an output flow-speed database; then import the system oil pressure-load database and / or the output flow-speed database into the automatic control module.

[0028] Furthermore, in the manual control test mode and the automatic control test mode of the present embodiment, the parking stop is manually triggered or automatically triggered when the remote control component detects that the counterweight has moved to the target position; and the test parameters include setting the current or voltage values ​​of the hydraulic motor displacement control solenoid valve, the system pressure solenoid valve and the motor control solenoid valve; setting the counterweight lifting displacement value and the counterweight lowering displacement value; setting the parking oil pressure threshold, which is used to turn on or off the visual camera to record the scale value on the reducer end face when triggering the parking stop.

[0029] As above, although the present invention has been shown and described with reference to specific preferred embodiments, it should not be construed as limiting the present invention itself. Various changes may be made to it in form and detail without departing from the spirit and scope of the present invention as defined in the appended claims.

Claims

1. A hydraulic winch test device, comprising a tower, a winch assembly, a hydraulic power assembly and an electric control assembly, characterized in that: A counterweight is slidably mounted on the tower, and the winch assembly is provided with a drum and a parking brake; one end of the power shaft of the drum is connected to the power end of the parking brake, and the other end is connected to the hydraulic motor of the hydraulic power assembly, and a steel wire rope is sleeved on the drum, and one end of the steel wire rope is connected to the counterweight; the electronic control assembly includes a control module and a data acquisition assembly, and the control module is respectively connected to the hydraulic motor and the parking brake, and is used to control the drum to rotate or control the parking brake to brake, so as to drive the counterweight to be lifted, lowered and parked along the tower; the data acquisition assembly includes a plurality of sensors, and the sensors are respectively installed on the winch assembly and the hydraulic power assembly to collect operation data during the test.

2. A hydraulic winch test device according to claim 1, characterized in that: A fixed pulley group is rotatably installed on the tower, and the fixed pulley group includes several fixed pulleys, one of which is installed on the top of the tower, and the remaining fixed pulleys are installed on the tower. One end of the steel wire rope is connected to the drum, and the other end is sequentially passed through the fixed pulleys on the tower, and after the fixed pulley is changed, it is sleeved on the fixed pulley on the top of the tower and connected to the counterweight.

3. A hydraulic winch testing device according to claim 1, characterized in that: The hydraulic power assembly includes a power pump station, a motor valve group and connecting oil pipes; the power pump station is provided with a drive motor, a hydraulic pump and a hydraulic oil tank; the power end of the drive motor is connected to the hydraulic pump; the motor valve group is provided with a first oil port, a second oil port, a hydraulic motor drive oil port, a hydraulic motor return oil port and a parking brake drive oil port, the motor valve group is connected to the hydraulic pump, the hydraulic oil tank, the hydraulic motor and the parking brake respectively through connecting oil pipes, a hydraulic motor drive oil circuit and a parking brake drive oil circuit are formed in the motor valve group, and a shuttle valve is connected between the hydraulic motor drive oil circuit and the parking brake drive oil circuit, and an overflow valve and a balance valve are connected to the hydraulic motor drive oil circuit.

4. A hydraulic winch test device according to claim 3, characterized in that: A reducer is also connected to the power shaft of the reel; the hydraulic motor is connected to the parking brake through a spline, the parking brake is connected to the reducer through a spline, the reducer is connected to the reel through a flange; the reel is connected to the mounting frame through a flange.

5. A hydraulic winch testing device according to claim 4, characterized in that: The electronic control component is provided with an industrial control cabinet, an observation room and a monitoring component; the control module includes a solenoid valve component and a remote control component; the solenoid valve component includes a hydraulic motor displacement control solenoid valve, a system pressure solenoid valve and a motor control solenoid valve; the hydraulic motor displacement control solenoid valve is installed on the hydraulic motor to adjust the displacement of the hydraulic motor; the system pressure solenoid valve is installed between the output end of the hydraulic pump and the hydraulic oil tank through a connecting oil pipe to adjust the system pressure; the motor control solenoid valve is installed in the oil circuit between the hydraulic pump and the motor valve group; the solenoid valve assembly and the monitoring component are electrically connected to the industrial control cabinet, and the industrial control cabinet is electrically connected to the remote control component.

6. A hydraulic winch testing device according to claim 5, characterized in that: The first oil port, the second oil port, the parking brake drive oil port and the hydraulic motor drive oil circuit on the motor valve group are respectively installed with oil pressure sensors for collecting the pressure values ​​of the first oil port, the second oil port, the parking oil pressure and the motor drive oil pressure of the hydraulic motor; the output end of the hydraulic pump is installed with a system pressure sensor and a motor flow sensor; the drum is installed with a displacement encoder and a drum speed encoder; the reducer is installed with a reducer temperature sensor, the cooling oil channel of the reducer is installed with a cooling cycle temperature sensor, and scale strips are respectively pasted on the circumferential surfaces of the rotating end and the non-rotating end of the reducer; and the wire rope is installed with a tension sensor.

7. A hydraulic winch testing device according to claim 5, characterized in that: The motor control solenoid valve is a three-position four-way valve, and is provided with two reversing solenoid coils for reversing the three-position four-way valve to control the hydraulic motor to rotate forward or reverse; the remote control component includes a manual control module and an automatic control module, and a data channel path is provided between the manual control module and the automatic control module.

8. A hydraulic winch testing device according to claim 6, characterized in that: The monitoring component includes a component monitoring device, a visual camera and a display; the component monitoring device includes several monitoring cameras, which are respectively installed on the tower, the power pump station and the drum assembly, and are used to monitor the operating status of the components; the visual camera is installed on the scale of the reducer, and is used to monitor the scale value; the monitoring camera and the visual camera are respectively electrically connected to the display, and the display is installed in the observation room.

9. A test method for a hydraulic winch test device according to any one of claims 1 to 8, characterized in that: The following steps are involved: S1. First, select the manual control test mode or the automatic control test mode according to the test requirements of the product to be tested; S2. Start the product test of the winch according to the test mode selected in S1; if the manual control test mode is selected, the product test process of the winch is as follows: motor lifting-parking stop and motor lowering-parking stop; if the automatic control test mode is selected, the product test process of the winch is as follows: motor lifting-parking stop-motor lowering-parking stop-motor lowering; S3. If the manual control test mode is selected, before the test, according to the specifications of the winch to be tested and the test requirements, a counterweight of appropriate weight is selected, and the test parameter setting operation is performed on the remote control component; during the test, a manual start trigger is performed on the remote control component, and the counterweight is driven by the hydraulic motor. After it is lifted to the preset target position according to the set value, the hydraulic motor stops driving, the parking brake is applied, and the visual camera takes pictures to complete the motor lifting-parking stop test; then the descending process is manually triggered, and the counterweight is driven by the hydraulic motor. After it is lowered to the preset target position according to the set value, the hydraulic motor stops driving, the parking brake is applied, and the visual camera takes pictures to complete the motor descending-parking stop test; during the above test process, the data acquisition component collects and records the process data of oil pressure value, oil temperature value, motor flow, drum speed and wire rope tension value, and then imports the process data into the automatic control module through the data channel path; If the automatic control test mode is selected, before the test, according to the specifications of the winch to be tested and the test requirements, a counterweight of appropriate weight is selected, and the test parameter setting operation is performed on the remote control component, and the test parameters also include the parking stop time; during the test, a start trigger is performed on the remote control component, and the counterweight is driven by the hydraulic motor and lifted to the preset target position according to the set value, the hydraulic motor stops driving, the parking brake is applied, and the visual camera takes pictures; after the parking stop time is over, the motor lowering process is started, and the counterweight is driven by the hydraulic motor and lowered to the preset target position according to the set value, the hydraulic motor stops driving, the parking brake is applied, and the visual camera takes pictures, and after the parking stop time is over, the motor lowering process is continued until the counterweight is lowered at the set speed; when the drum speed is ≤0rpm, the hydraulic motor stops driving, the counterweight falls to the ground, and the automatic control test is completed; during the above test process, the data acquisition component collects and records the process data of oil pressure value, oil temperature value, motor flow, drum speed and wire rope tension value, and then imports the process data into the automatic control module through the data channel path; S4. According to the product specifications of the winch, by selecting suitable counterweights of different weights and setting different system pressures, repeat the test in S3 to form a system oil pressure-load database; by setting different hydraulic motor displacements, repeat the test in S3 to form an output flow-speed database; then import the system oil pressure-load database and / or the output flow-speed database into the automatic control module.

10. A test method for a hydraulic winch test device according to claim 9, characterized in that: In S3, in the manual control test mode and the automatic control test mode, the parking stop is manually triggered or automatically triggered when the remote control component detects that the counterweight has moved to the target position; the test parameters include setting the current or voltage value of the hydraulic motor displacement control solenoid valve, the system pressure solenoid valve and the motor control solenoid valve; setting the counterweight lifting displacement value and the counterweight lowering displacement value; setting the parking oil pressure threshold value, which is used to turn on or off the visual camera to record the scale value on the reducer end face when triggering the parking stop; In the manual control test mode, after the parking brake is triggered, when the parking oil pressure value is set to ≤ the system pressure, the visual camera will record the scale value in real time for the first time. When the parking oil pressure value is ≤0.3MPa, the visual camera will record the scale value in real time for the second time to record the sliding displacement caused by system pressure relief; in the automatic control test mode, after the parking brake is triggered, when the parking oil pressure value is set to ≤ the system pressure, the visual camera will record the scale value in real time for the first time. When the parking oil pressure value is ≤0.3MPa, the visual camera will record the scale value in real time for the second time to record the sliding displacement caused by system pressure relief; the stop time of the parking stop time starts from the second real-time camera of the visual camera. After the parking stop time ends, the visual camera will record the scale value in real time for the third time.

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