Automatic testing device for crane

Abstract

The invention discloses an automatic testing device for a crane, which comprises an upper computer arranged in a remote control room and a lower computer arranged in a cab, the hydraulic control valve group, the rotation angle sensor, the winch encoder, the rotation proximity switch, the moment limiter of the crane, the arm head positioning sensor, the rotary table positioning sensor, the vehicle body inclination angle sensor, the four distance measuring sensors and the weighing box are respectively connected with the lower computer. According to the invention, automatic test control of the crane can be realized through remote automatic control, test data can be automatically recorded, the labor intensity of test is greatly reduced, the test efficiency is improved, and the test data can be rapidly and accurately recorded.

Description

Technical Field

[0001] The invention relates to the technical field of cranes, in particular to an automatic testing device for cranes. Background Art

[0002] Before leaving the factory, truck cranes need to go through a series of tests, and they can only be sold after passing the tests. In the prior art, during the operation reliability test of truck cranes, the operator needs to sit in the cab and perform corresponding operation cycle operations, such as hook raising, hook lowering, left turn, right turn, arm raising, arm lowering, arm extension, arm retraction, etc., through which the various index parameters of the crane are tested to see if they are normal. This test method requires staff to operate on site and record test data, which has low test efficiency and high labor intensity for staff. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide an automatic testing device for a crane, which can realize automatic testing and operation of the crane through remote automatic control, and automatically record test data, thereby greatly reducing the labor intensity of the test, improving the test efficiency, and recording the test data quickly and accurately.

[0004] The technical solution of the present invention is:

[0005] A crane automation test device includes an upper computer, a lower computer, a hydraulic control valve group, a slewing angle sensor, a winch encoder, a slewing proximity switch, a crane torque limiter, a boom head positioning sensor, a turntable positioning sensor, a body inclination sensor, four distance measuring sensors and a weighing box;

[0006] The hydraulic control valve group is connected to the hydraulic control system of the crane, and the multiple PWM interfaces on the hydraulic control valve group are respectively connected to the multiple PWM control interfaces on the lower computer in a one-to-one correspondence;

[0007] The rotation angle sensor is installed on the turntable of the crane and is used to collect the rotation angle of the turntable;

[0008] The hoisting encoder is installed on the hoist of the crane boom and is used to collect the retracted and extended state of the hoist;

[0009] The rotary proximity switch is installed on the turntable and is used to collect the rotation status of the turntable;

[0010] The arm head positioning sensor is installed on the arm head of the crane boom, and the turntable positioning sensor is installed on the turntable;

[0011] The vehicle body inclination sensor is installed on the slewing support and is used to collect the inclination state of the vehicle body during the operation of the crane;

[0012] The four distance measuring sensors are installed at the four corners of the bottom end of the crane outrigger box to collect the height value of the outrigger box from the ground;

[0013] The weighing box is arranged on the outrigger box, a weighing collection board is arranged in the weighing box, corresponding weighing sensors are installed on the outrigger boards at the bottom of each outrigger of the crane, and multiple weighing sensors are connected to the weighing collection board;

[0014] The hydraulic control valve group, rotation angle sensor, winch encoder, rotation proximity switch, crane torque limiter, arm head positioning sensor, turntable positioning sensor, body inclination sensor, multiple distance measuring sensors, and weighing acquisition board are all connected to the lower computer in the cab by wired communication, and the lower computer is connected to the upper computer in the remote control room by wireless communication.

[0015] The arm head positioning sensor, turntable positioning sensor, vehicle body inclination sensor, multiple distance measuring sensors and weighing acquisition board are all connected to the data acquisition terminal through wired communication, and the data acquisition terminal is connected to the lower computer through wired communication.

[0016] The hydraulic control valve group is an eight-unit solenoid valve group, which is used to realize the drive control of the crane's main hook lifting, main hook lowering, auxiliary hook lifting, auxiliary hook lowering, left rotation, right rotation, arm raising and retracting, arm lowering and extending.

[0017] The rotation angle sensor includes a first rotation angle sensor and a second rotation angle sensor. The first rotation angle sensor is installed at the center position of the top of the crane turntable, and the second rotation angle sensor is installed at the center position inside the crane turntable.

[0018] The hoisting encoder comprises a main hoisting encoder installed on the main hoist of the crane arm and an auxiliary hoisting encoder installed on the auxiliary hoist of the crane arm.

[0019] The rotary proximity switch includes a left proximity switch, a right proximity switch and a sensor sheet. The left proximity switch and the right proximity switch are respectively connected to the left and right sides of the vehicle control room and the probes are facing downward. The vehicle control room rotates synchronously with the turntable. The sensor sheet is arranged on the walkway plate, and the walkway plate is fixedly connected to the left side or the right side of the turntable support. When the left proximity switch or the right proximity switch approaches the sensor sheet, a signal is sent to the lower computer.

[0020] The arm head positioning sensor and turntable positioning sensor are both GNSS sensors. The arm head positioning sensor is connected to the arm head GNSS host, and the turntable positioning sensor is connected to the turntable GNSS host. The arm head GNSS host and the turntable GNSS host are respectively connected to the data acquisition terminal for wired communication.

[0021] The vehicle body inclination angle sensors include two, and the two vehicle body inclination angle sensors are respectively installed on the left and right side surfaces of the slewing support.

[0022] The four distance measuring sensors are all ultrasonic sensors.

[0023] The lower computer is connected to the first radio station, the upper computer is connected to the second radio station, and the first radio station and the second radio station are connected by wireless communication.

[0024] Advantages of the present invention:

[0025] The upper computer of the present invention is connected to the lower computer via a radio station, and the upper computer can directly send remote instructions to the lower computer, so that the operator does not need to operate the truck crane in person in the cab for testing.

[0026] The present invention is provided with a slewing angle sensor, a winch encoder, a slewing proximity switch, a moment limiter of the crane, a boom positioning sensor, a turntable positioning sensor, a vehicle body inclination sensor, a plurality of distance measuring sensors and a weighing box, and various test data are automatically collected through different sensors, and the collected data are accurate and the collection rate is fast.

[0027] The test operation of the present invention only requires one staff member to perform remote operation, and the test data is collected through various sensors and transmitted to a remote host computer, which greatly reduces the test labor intensity of the staff, saves manpower, and improves the efficiency and accuracy of the test. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a principle block diagram of the present invention. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] See Figure 1 , a crane automation test device, including an upper computer 1, a lower computer 2, a hydraulic control valve group 3, a slewing angle sensor 4, a winch encoder 5, a slewing proximity switch 6, a crane torque limiter 7, a boom head positioning sensor 8, a turntable positioning sensor 9, two body inclination sensors 10, four distance sensors 11 and a weighing box 12;

[0031] The hydraulic control valve group 3 is an eight-unit solenoid valve group, which is connected to the hydraulic control system of the crane. The eight PWM interfaces on the hydraulic control valve group 3 are respectively connected to the eight PWM control interfaces on the lower computer 2 in a one-to-one correspondence, and are used to realize the hydraulic drive control of the crane's main hook lifting, main hook lowering, auxiliary hook lifting, auxiliary hook lowering, left rotation, right rotation, arm raising and arm retracting, arm lowering and arm extension;

[0032] The rotation angle sensor 4 includes a first rotation angle sensor and a second rotation angle sensor for collecting the rotation angle of the turntable. The first rotation angle sensor is installed at the center position of the top of the crane turntable, and the second rotation angle sensor is installed at the center position inside the crane turntable. The two rotation angle sensors greatly improve the accuracy of angle collection; the first rotation angle sensor is connected to the 232 port of the lower computer 2, and the second rotation angle sensor is connected to the CAN1 port of the lower computer 2;

[0033] The hoisting encoder 5 includes a main hoisting encoder installed on the main hoist of the boom and an auxiliary hoisting encoder installed on the auxiliary hoist of the boom, so as to collect the retracting and extending states of the main hoist and the auxiliary hoist. The hoisting encoder and the auxiliary hoisting encoder are both connected to the CAN1 port of the lower computer 2;

[0034] The rotary proximity switch 6 includes a left proximity switch, a right proximity switch and a sensor sheet. The left proximity switch and the right proximity switch are respectively connected to the left and right sides of the vehicle control room and the probe is facing downward. The vehicle control room rotates synchronously with the turntable. The sensor sheet is arranged on the walkway plate, and the walkway plate is fixedly connected to the left side or the right side of the turntable support. The left proximity switch and the right proximity switch are respectively connected to the switch input interface of the lower computer 1. The left proximity switch and the right proximity switch rotate synchronously with the turntable. When the left proximity switch or the right proximity switch approaches the sensor sheet, a signal is sent to the lower computer 2, so as to collect the rotation position state of the turntable;

[0035] The moment limiter 7 of the crane is connected to the CAN1 port of the lower computer 1, so that the lower computer 2 can read the data of the moment limiter 7;

[0036] The arm head positioning sensor 8 and the turntable positioning sensor 9 are both GNSS sensors. The arm head positioning sensor 8 is installed on the arm head of the crane boom, and the turntable positioning sensor 9 is installed on the turntable. The arm head positioning sensor 8 is connected to the arm head GNSS host 13, and the turntable positioning sensor 9 is connected to the turntable GNSS host 14. The arm head GNSS host 13 and the turntable GNSS host 14 are both connected to the CAN2 port of the data acquisition terminal 15;

[0037] Two body inclination sensors 10 are respectively installed on the left and right side surfaces of the slewing support, and are used to collect the inclination state of the body of the crane during operation. Both body inclination sensors 10 are connected to the CAN2 port of the data acquisition terminal 15;

[0038] The four distance measuring sensors 11 are all ultrasonic sensors, and are respectively installed at the four corners of the bottom of the crane outrigger box to collect the height value of the outrigger box from the ground. The four distance measuring sensors 11 are respectively connected to the four analog input interfaces of the data acquisition terminal 15;

[0039] The weighing box 12 is arranged on the outrigger box, and a weighing acquisition board is arranged in the weighing box. Corresponding weighing sensors are installed on the footboards at the bottom of each outrigger of the crane, and multiple weighing sensors are connected to the weighing acquisition board. The weighing acquisition board of the weighing box 12 is connected to the 232 port of the data acquisition terminal 15;

[0040] The data acquisition terminal 15 is connected to the lower computer 2 by wired communication, the lower computer 2 is connected to the first radio station in the cab, and the remote control room is provided with the upper computer 1 and the second radio station connected to each other, and the first radio station and the second radio station are connected by wireless communication.

[0041] During the test, the upper computer 1 sends instructions to the lower computer 2, and the lower computer 2 sends corresponding control instructions to the hydraulic control valve group 3, and the hydraulic control valve group 3 drives the hydraulic control system of the crane to perform corresponding hydraulic drive; at the same time, the slewing angle sensor 4, the winch encoder 5, the slewing proximity switch 6, the crane's torque limiter 7, the arm head positioning sensor 8, the turntable positioning sensor 9, the two body inclination sensors 10, the four distance measuring sensors 11 and the weighing box 12 perform corresponding test data collection, and then send the collected test data to the upper computer 1 through the lower computer 2 for display and storage.

[0042] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A crane automatic testing device, characterized in that: It includes upper computer, lower computer, hydraulic control valve group, slewing angle sensor, winch encoder, slewing proximity switch, crane torque limiter, boom head positioning sensor, turntable positioning sensor, vehicle body inclination sensor, four distance measuring sensors and weighing box; The hydraulic control valve group is connected to the hydraulic control system of the crane, and the multiple PWM interfaces on the hydraulic control valve group are respectively connected to the multiple PWM control interfaces on the lower computer in a one-to-one correspondence; The rotation angle sensor is installed on the turntable of the crane and is used to collect the rotation angle of the turntable; The hoisting encoder is installed on the hoist of the crane boom and is used to collect the retracted and extended state of the hoist; The rotary proximity switch is installed on the turntable and is used to collect the rotation status of the turntable; The arm head positioning sensor is installed on the arm head of the crane boom, and the turntable positioning sensor is installed on the turntable; The vehicle body inclination sensor is installed on the slewing support and is used to collect the inclination state of the vehicle body during the operation of the crane; The four distance measuring sensors are installed at the four corners of the bottom end of the crane outrigger box to collect the height value of the outrigger box from the ground; The weighing box is arranged on the outrigger box, a weighing collection board is arranged in the weighing box, corresponding weighing sensors are installed on the outrigger boards at the bottom of each outrigger of the crane, and multiple weighing sensors are connected to the weighing collection board; The hydraulic control valve group, rotation angle sensor, winch encoder, rotation proximity switch, crane torque limiter, arm head positioning sensor, turntable positioning sensor, body inclination sensor, multiple distance measuring sensors, and weighing acquisition board are all connected to the lower computer in the cab by wired communication, and the lower computer is connected to the upper computer in the remote control room by wireless communication.

2. The automatic testing device for a crane according to claim 1, characterized in that: The arm head positioning sensor, turntable positioning sensor, vehicle body inclination sensor, multiple distance measuring sensors and weighing acquisition board are all connected to the data acquisition terminal through wired communication, and the data acquisition terminal is connected to the lower computer through wired communication.

3. The automatic testing device for a crane according to claim 1, characterized in that: The hydraulic control valve group is an eight-unit solenoid valve group, which is used to realize the drive control of the crane's main hook lifting, main hook lowering, auxiliary hook lifting, auxiliary hook lowering, left rotation, right rotation, arm raising and retracting, arm lowering and extending.

4. The automatic testing device for a crane according to claim 1, characterized in that: The rotation angle sensor includes a first rotation angle sensor and a second rotation angle sensor. The first rotation angle sensor is installed at the center position of the top of the crane turntable, and the second rotation angle sensor is installed at the center position inside the crane turntable.

5. The automatic testing device for a crane according to claim 1, characterized in that: The hoisting encoder comprises a main hoisting encoder installed on the main hoist of the crane arm and an auxiliary hoisting encoder installed on the auxiliary hoist of the crane arm.

6. The automatic testing device for a crane according to claim 1, characterized in that: The rotary proximity switch includes a left proximity switch, a right proximity switch and a sensor sheet. The left proximity switch and the right proximity switch are respectively connected to the left and right sides of the vehicle control room and the probes are facing downward. The vehicle control room rotates synchronously with the turntable. The sensor sheet is arranged on the walkway plate, and the walkway plate is fixedly connected to the left side or the right side of the turntable support. When the left proximity switch or the right proximity switch approaches the sensor sheet, a signal is sent to the lower computer.

7. The automatic testing device for a crane according to claim 2, characterized in that: The arm head positioning sensor and turntable positioning sensor are both GNSS sensors. The arm head positioning sensor is connected to the arm head GNSS host, and the turntable positioning sensor is connected to the turntable GNSS host. The arm head GNSS host and the turntable GNSS host are respectively connected to the data acquisition terminal for wired communication.

8. The automatic testing device for a crane according to claim 1, characterized in that: The vehicle body inclination angle sensors include two, and the two vehicle body inclination angle sensors are respectively installed on the left and right side surfaces of the slewing support.

9. The automatic testing device for a crane according to claim 1, characterized in that: The four distance measuring sensors are all ultrasonic sensors.

10. The automatic testing device for a crane according to claim 1, characterized in that: The lower computer is connected to the first radio station, the upper computer is connected to the second radio station, and the first radio station and the second radio station are connected by wireless communication.

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