CN112013776A - Device and method for measuring camber of crane girder - Google Patents

Abstract

The invention provides a device and a method for measuring the camber of a crane girder, wherein the device for measuring the camber of the crane girder comprises the following components: the supporting assembly is arranged on the horizontal part of the crane main beam; the screw rod screw is arranged on the supporting component; the operation assembly is arranged on the lead screw rod and can ascend or descend along the lead screw rod; the horizontal laser ranging assembly is arranged on the operation assembly and used for measuring the distance between the horizontal laser ranging assembly and the upper arch part of the crane main beam in the horizontal direction; and the vertical laser ranging assembly is arranged on the operation assembly and used for measuring the distance between the vertical laser ranging assembly and the horizontal part of the crane main beam in the vertical direction. The technical scheme provided by the invention can improve the measurement efficiency and precision of the camber of the crane girder.

Description

Measuring device and measuring method for upper camber of crane main girder

technical field

The invention relates to a deformation measurement system of special equipment, in particular to a device and a measurement method for the upper camber of a main girder of a crane.

Background technique

The main beam is the main bearing member of the crane. Strength, stiffness and stability are important indicators for evaluating the working performance of the crane. The upper camber is one of the key parameters for evaluating its stiffness performance. The test results of the upper camber directly affect the crane's performance. performance and longevity.

At present, the common method for measuring the camber of the main beam of the crane is the wire drawing method. The method is as follows: First, select a wire of a certain diameter, the inspector straightens the wire on the main beam, and one end of the wire is fixed on the wire fixing wheel at one end of the main beam. The other end of the steel wire goes around the pulley fixed at the other end of the main beam and hangs a heavy hammer; then, a measuring rod of equal height is set at both ends of the main beam, and the steel wire is pulled over the measuring rod; Measure the distance values h1 and h2 from the upper surface of the main beam span end and mid-span cover plate to the steel wire, and the difference between h1 and h2 is the camber value on the main beam.

However, the wire drawing method has strict requirements on the diameter and tension of the steel wire. In addition, due to the influence of the self-weight deformation of the steel wire, it is necessary to deduct the corresponding correction value of the self-weight of the steel wire from the measurement data. The steel wire method has low efficiency and poor accuracy in measuring the camber of the main beam of the crane.

Therefore, it is necessary to propose a new measuring device and measuring method for the upper camber of the main girder of the crane, so as to improve the efficiency and accuracy of the measurement.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a device and method for measuring the camber on the main girder of the crane, which can improve the measurement efficiency and accuracy of the camber on the main girder of the crane, and solve the problems of low efficiency and poor accuracy in manual measurement in the prior art. question.

In order to achieve the above purpose, the present invention provides a device for measuring the camber of a main girder of a crane, comprising:

a support assembly, arranged on the horizontal part of the main beam of the crane;

a lead screw screw, arranged on the support assembly;

a running assembly, arranged on the lead screw, the running assembly can ascend or descend along the lead screw;

a horizontal laser ranging assembly, arranged on the running assembly, the horizontal laser ranging assembly is used to measure the horizontal distance between the horizontal laser ranging assembly and the upper arch of the main beam of the crane; and,

The vertical laser distance measuring assembly is arranged on the running assembly, and the vertical laser distance measuring assembly is used to measure the distance between the vertical laser distance measuring assembly and the horizontal part of the crane main beam in the vertical direction.

Optionally, the support assembly includes an upper assembly, a middle assembly and a lower assembly, the upper assembly and the lower assembly are connected through the middle assembly, the top end of the lead screw is connected to the upper assembly, and the wire The bottom end of the lever screw is connected to the lower assembly.

Optionally, a through hole is formed on the lower component, so that the vertical laser distance measuring component measures the distance between the vertical laser distance measuring component and the horizontal portion in the vertical direction through the through hole.

Optionally, the lower assembly is parallel to the horizontal portion, and the lead screw is perpendicular to the lower assembly.

Optionally, the support assembly further includes at least three magnetic feet, and all the magnetic feet are evenly disposed on the bottom end of the lower assembly and adsorbed on the horizontal portion.

Optionally, the running assembly includes a lead screw nut, a servo motor and a motor control module, the lead screw nut is connected to the outer ring of the lead screw screw through the thread of the inner ring, and the servo motor is respectively connected to the lead screw. The lever nut is connected with the motor control module.

Optionally, the device for measuring the upper crown of the main beam of the crane further includes a measurement data processing module, and the measurement data processing module is respectively connected with the horizontal laser ranging component, the vertical laser ranging component and the motor control module. Module signal connection.

Optionally, the device for measuring the camber on the main beam of the crane further includes a terminal, and the terminal is signal-connected to the measurement data processing module.

Optionally, the signal connection method is wireless, bluetooth or infrared.

The present invention also provides a method for measuring the upper camber of the main beam of the crane, comprising:

Place the camber measuring device on the main beam of the crane on the horizontal part of the main beam of the crane;

Initially, the running component is set on the upper part of the lead screw, and the horizontal laser ranging component set on the running component is used to measure the distance between the horizontal laser ranging component and the upper arch of the main beam of the crane. a horizontal distance, when the laser emitted by the horizontal laser ranging assembly does not contact the apex of the upper arch, the measured horizontal distance is greater than the span of the crane main beam; and,

Move the running assembly downward, when the laser emitted by the horizontal laser ranging assembly touches the apex of the upper arch, the measured horizontal distance is less than the span of the crane main beam, and the running assembly stops moving , the vertical distance between the vertical laser ranging component and the horizontal part measured by the vertical laser ranging component disposed on the running component is the upper camber of the upper arch of the main beam of the crane .

Compared with the prior art, the technical scheme of the present invention has the following beneficial effects:

1. The camber measurement device on the main beam of the crane provided by the present invention is realized by arranging a horizontal laser ranging component and a vertical laser ranging component on the running component, and the running component can rise or fall along the lead screw. Compared with manual measurement, the automatic measurement of the camber on the main beam of the crane improves the measurement efficiency and measurement accuracy of the camber on the main beam of the crane.

2. The method for measuring the upper camber of the crane main beam provided by the present invention, by using the downward movement of the running component, when the laser emitted by the horizontal laser ranging component touches the apex of the upper camber of the crane main beam, the vertical laser measuring The vertical distance between the vertical laser ranging component and the horizontal part measured from the distance component is the upper camber of the upper arch of the crane main beam, which simplifies the measurement steps and realizes the upper arch of the crane main beam. Compared with manual measurement, the automatic measurement of degree improves the measurement efficiency and measurement accuracy.

Description of drawings

1 is a schematic front view of a device for measuring the camber of a main girder of a crane according to an embodiment of the present invention;

Fig. 2 is the side view schematic diagram of the upper camber measuring device of the crane main girder shown in Fig. 1;

Fig. 3 is the top view schematic diagram of the camber measuring device on the crane main girder shown in Fig. 1;

Fig. 4 is the state schematic diagram of the camber measuring device on the main girder of the crane shown in Fig. 1 when the measurement is started;

FIG. 5 is a schematic diagram of the state of the camber measuring device on the main girder of the crane shown in FIG. 1 when the measurement is completed.

Wherein, the reference numerals in Fig. 1 to Fig. 5 are described as follows:

1-lead screw; 2-running assembly; 3-horizontal laser measuring assembly; 4-vertical laser measuring assembly; 51-upper assembly; 52-middle assembly; 53-lower assembly; 6-through hole; 7-magnetic bottom Feet; 8-horizontal; 9-upper arch.

Detailed ways

In order to make the purpose, advantages and features of the present invention clearer, the device and method for measuring the upper camber of a main girder of a crane proposed by the present invention will be described in further detail below with reference to FIGS. 1 to 5 . It should be noted that, the accompanying drawings are all in a very simplified form and in inaccurate scales, and are only used to facilitate and clearly assist the purpose of explaining the embodiments of the present invention.

An embodiment of the present invention provides a device for measuring the upper camber of a main beam of a crane. Referring to FIGS. 1 to 5 , it can be seen from FIGS. 1 to 5 that the main beam of the crane includes a horizontal portion 8 and an upper arch portion 9 . The upper camber measurement device of the crane main girder is used to measure the upper camber of the crane main girder, that is, to measure the upper camber of the upper arch portion 9 relative to the horizontal portion 8, the upper arch of the crane main girder is measured. The degree measuring device includes: a supporting component, which is arranged on the horizontal part 8 of the main beam of the crane; a lead screw 1, which is arranged on the supporting component; a running component 2, which is arranged on the lead screw 1, and the The running component 2 can rise or fall along the lead screw 1; the horizontal laser ranging component 3 is arranged on the running component 2, and the horizontal laser ranging component 3 is used to measure the distance between the horizontal laser ranging component and the main beam of the crane. The distance of the upper arch 9 in the horizontal direction; and, the vertical laser ranging assembly 4 is arranged on the running assembly 2, and the vertical laser ranging assembly 4 is used to measure the distance between it and the crane main beam The distance of the horizontal part 8 in the vertical direction.

Referring to Figures 1 to 5 below, the device for measuring the upper crown of the main beam of the crane will be described in detail:

The crane main beam includes a horizontal portion 8 and an upper arch portion 9, the horizontal portion 8 may be located at both ends of the upper arch portion 9, and the upper arch portion 9 is arched relative to the horizontal plane of the horizontal portion 8, Therefore, measuring the upper camber of the upper arch portion 9 relative to the horizontal portion 8 is to measure the upper camber of the crane main beam.

The support assembly includes an upper assembly 51 , a middle assembly 52 and a lower assembly 53 . The upper assembly 51 and the lower assembly 53 are connected through the middle assembly 52 , that is, the upper assembly 51 is arranged on the middle assembly 52 . At the top, the lower assembly 53 is disposed at the bottom end of the middle assembly. The transverse cross-sections of the upper assembly 51 and the lower assembly 53 may be circular, square or rectangular. It should be noted that the transverse cross-sections of the upper assembly 51 and the lower assembly 53 are not limited to the above-mentioned shapes. It can be other regular planar shapes, such as hexagon, ellipse, etc. The height of the middle assembly 52 is the same as the height of the lead screw 1, the cross section of the middle assembly 52 is a hollow semicircle or a semisquare, etc., the upper assembly 51, the middle assembly 52 and the lower The assembly 53 encloses a cavity with an open side, and the running assembly 2 ascends or descends along the lead screw 1 in the cavity.

The material of the support assembly can be insulating materials such as wood and plastic, or metal materials such as steel plates and iron plates. The rigidity or hardness of the support assembly is large enough to ensure that the lead screw 1 is fixed on the support assembly. superior.

The top end of the lead screw 1 is connected to the upper assembly 51 , and the bottom end of the lead screw 1 is connected to the lower assembly 53 . In addition, since the support assembly is disposed on the horizontal portion 8, the lead screw 1 is disposed on the support assembly, the lower assembly 53 is parallel to the horizontal portion 8, and the lead screw 1 It is perpendicular to the lower assembly 53. It should be noted that the lower assembly 53 is a flat plate with uniform thickness. Then, the lead screw 1 is perpendicular to the horizontal portion 8, so as to better ensure the vertical The accuracy of the distance between the vertical laser ranging assembly 4 and the horizontal part 8 measured by the straight laser ranging assembly 4 in the vertical direction, and the accuracy of the distance measured by the horizontal laser ranging assembly 3 is better guaranteed. The accuracy of the distance between the horizontal laser ranging assembly 3 and the upper arch 9 in the horizontal direction.

The support assembly also includes at least three magnetic feet 7, all the magnetic feet 7 are evenly arranged at the bottom end of the lower assembly 53 and are adsorbed on the horizontal portion 8 to measure the camber. The position of the camber measuring device on the main beam of the crane is fixed at the time of measurement, and the stability of the camber measuring device on the main beam of the crane is ensured during the measurement. For example, when the number of the magnetic feet 7 is three, the three magnetic feet 7 form three vertices of an equilateral triangle and are disposed on the bottom surface of the lower component 53; When the number of feet 7 is four, the four magnetic feet 7 form four vertices of a square and are disposed on the bottom surface of the lower component 53 .

The horizontal laser ranging assembly 3 can be arranged on the side of the running assembly 2, and faces the opening side of the cavity enclosed by the upper assembly 51, the middle assembly 52 and the lower assembly 53, so that the horizontal laser The distance measuring assembly 3 can emit laser light in the direction of the upper arch 9 in the horizontal direction to measure the distance between the horizontal laser distance measuring assembly 3 and the upper arch 9 in the horizontal direction; the vertical The straight laser distance measuring component 4 can be arranged on the bottom surface of the running component 2, so that the vertical laser distance measuring component 4 can emit laser downward in the vertical direction, so as to measure the distance between the vertical laser distance measuring component 4 and the vertical laser distance measuring component 4. The vertical distance of the horizontal part 8 of the crane girder. In addition, the position of the horizontal laser ranging assembly 3 on the running assembly 2 is close to the position of the vertical laser ranging assembly 4 on the running assembly 2, and the horizontal laser ranging assembly 3 and The vertical laser ranging assembly 4 is close to the junction of the side surface and the bottom surface of the running assembly 2 to ensure that when the laser emitted by the horizontal laser ranging assembly 3 contacts the apex of the upper arch 9, the The vertical distance between the vertical laser ranging assembly 4 and the horizontal portion 8 measured by the vertical laser ranging assembly 4 is the upper camber of the upper arch portion 9 of the crane main beam.

In addition, a through hole 6 is formed on the lower component 53, so that the laser light emitted by the vertical laser ranging component 4 can pass through the through hole 6 to reach the horizontal portion 8, and then measure the vertical laser light The distance between the distance measuring component 4 and the horizontal part 8 in the vertical direction. The shape of the through hole 6 may be a round hole, a square hole or other shapes.

Moreover, since the running assembly 2 can ascend or descend along the lead screw 1, and the horizontal laser ranging assembly 3 is disposed on the running assembly 2, the vertical laser ranging assembly 4 is disposed on the On the running assembly 2 , the running assembly 2 can take the horizontal laser ranging assembly 3 and the vertical laser ranging assembly 4 to ascend or descend along the lead screw 1 . As shown in FIG. 4 , when starting to measure the upper crown, the running component 2 is arranged on the upper part of the lead screw 1, and at this time, the laser emitted by the horizontal laser ranging component 3 does not contact the upper crown. 9, the horizontal distance between the horizontal laser ranging component 3 and the upper arch 9 measured by the horizontal laser ranging component 3 is greater than the span S of the crane main beam, then continue down Move the running assembly 2; when the running assembly 2 moves downward until the laser emitted by the horizontal laser ranging assembly 3 contacts the vertex of the upper arch 9, as shown in FIG. 5, the running assembly 2 Stop moving, the horizontal distance measured by the horizontal laser ranging component 3 is smaller than the span S of the crane main beam, at this time, the vertical laser ranging component 4 measured by the vertical laser ranging component 4 The vertical distance H from the horizontal portion 8 is the upper camber of the upper arch portion 9 of the main beam of the crane. In addition, during the downward movement of the running component 2, the horizontal laser ranging component 3 and the vertical laser ranging component 4 can measure the corresponding horizontal distance and vertical distance in real time to ensure that the The upper crown of the upper crown portion 9 is measured.

In addition, the running assembly 2 includes a lead screw nut (not shown), a servo motor (not shown) and a motor control module (not shown), the lead screw nut is connected to the lead screw through the thread of the inner ring The outer ring of 1 is connected, and the servo motor is respectively connected with the lead screw nut and the motor control module. The running assembly 2 can rise or fall along the lead screw 1. Specifically, the motor control module can control the servo motor to rotate forward or reverse, so that the servo motor drives the lead screw nut Forward or reverse rotation, so that the running assembly 2 rises or falls.

The upper camber measurement device of the main girder of the crane further includes a measurement data processing module (not shown), and the measurement data processing module is respectively connected with the horizontal laser ranging assembly 3, the vertical laser ranging assembly 4 and the The motor control module signal connections described above. The measurement data processing module can receive the measurement data of the horizontal laser ranging assembly 3 in the horizontal direction and the measurement data of the vertical laser ranging assembly 4 in the vertical direction, and, according to the crane main The data of the span S of the beam and the measurement data in the horizontal direction generate control data for the servo motor, and send it to the motor control module, so that the motor control module controls the forward or reverse rotation of the servo motor. rotate, and then control the rise or fall of the running component 2 .

Further, the device for measuring the upper crown of the main girder of the crane further includes a terminal (not shown), and the terminal is signal-connected with the measurement data processing module. Specifically, the terminal may be a computer, and the user of the device for measuring the camber on the main beam of the crane can input the data of the span S of the main beam of the crane through the computer, and send it to the computer through the computer. The measurement data processing module, in addition, the computer can also receive, display and record the measurement data in the horizontal direction and the measurement data in the vertical direction sent by the measurement data processing module. Wherein, the final camber measurement data H of the upper camber measuring device for the main beam of the crane can also be displayed on the computer screen for the user to view.

The signal connection can be wireless, bluetooth or infrared.

In addition, the motor control module, the measurement data processing module, and the terminal are all provided with control chips, and the control chips are all existing chip models, such as TMS320, XC6SLX16, SA60, and so on.

To sum up, the device for measuring the camber of the main girder of the crane provided by the present invention includes a support component, which is arranged on the horizontal part; a lead screw screw, which is arranged on the support component; and a running component, which is arranged on the wire on the lead screw, the running component can rise or fall along the lead screw; the horizontal laser ranging component is arranged on the running component, and the horizontal laser ranging component is used to measure the distance between the horizontal laser ranging component and the upper arch. and a vertical laser ranging assembly, which is arranged on the running assembly, and is used to measure the distance between the vertical laser ranging assembly and the horizontal portion in the vertical direction. The device for measuring the camber of the main girder of the crane provided by the invention realizes the automatic measurement of the camber of the main girder of the crane, and improves the measurement efficiency and the measurement accuracy compared with the manual measurement.

An embodiment of the present invention also provides a method for measuring the upper camber of a main beam of a crane. Referring to FIGS. 4 and 5 , the method for measuring the upper camber of a main beam of a crane includes:

First, the device for measuring the crown of the crane main girder is placed on the horizontal part 8 of the crane main girder. The structure of the camber measuring device on the main girder of the crane can be referred to the above content, which is not repeated here.

Then, as shown in FIG. 4 , initially, the running assembly 2 is set on the upper part of the lead screw 1, and the horizontal laser ranging assembly 3 is used to measure the horizontal laser ranging assembly 3 on the running assembly 2 The horizontal distance from the upper arch 9 of the main beam of the crane. When the laser emitted by the horizontal laser ranging assembly 3 does not touch the vertex of the upper arch 9, the horizontal laser ranging assembly 3 measures the distance. The resulting horizontal distance is greater than the span S of the crane girder.

Next, move the running component 2 downward, when the laser emitted by the horizontal laser ranging component 3 contacts the apex of the upper arch 9, as shown in FIG. 5, the measured horizontal distance is smaller than that of the crane The span S of the main girder, the running assembly 2 stops moving, and the vertical laser ranging assembly 4 arranged on the running assembly 2 measures the level between the vertical laser ranging assembly 4 and the crane main girder The vertical distance between the parts 8 is the upper crown of the upper crown part 9 .

Specifically, in the initial state, the laser emitted by the horizontal laser ranging assembly 3 does not contact the upper arch 9. At this time, the span S of the crane main beam is input from the terminal to start the automatic measurement process, and the terminal The span S is sent to the measurement data processing module, and the measurement data processing module receives the horizontal distance measured by the horizontal laser ranging assembly 3 in the initial state is greater than the span S of the crane main beam, the measurement data The processing module sends a downward movement control signal to the motor control module on the running component 2, and the motor control module controls the servo motor to drive the running component 2 to move downward. In addition, during the downward movement of the running component 2, the horizontal laser ranging component 3 transmits the measured data to the measured data processing module in real time.

When the running assembly 2 moves downward until the laser emitted by the horizontal laser ranging assembly 3 contacts the vertex (ie the highest position) of the upper arch 9 of the crane main beam, the horizontal laser ranging assembly 3 measures The horizontal distance is less than the span S of the main beam of the crane, the measurement data processing module sends a control signal to stop the movement to the motor control module, and the motor control module controls the servo motor to stop movement, so that the running component 2 stops At this time, the vertical distance between the vertical laser ranging component 4 and the horizontal part 8 of the crane main beam measured by the vertical laser ranging component 4 is the upper arch of the upper arch 9 The measurement data processing module sends the horizontal distance measured by the horizontal laser ranging component 3 and the vertical distance measured by the vertical laser ranging component 4 to the terminal.

As can be seen from the above content, the method for measuring the camber on the main girder of the crane provided by the present invention simplifies the measurement steps, realizes the automatic measurement of the camber on the main girder of the crane, and improves the measurement efficiency and measurement accuracy compared with manual measurement.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should The solutions can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention.

Claims (10)

1. an upper camber measuring device on a crane girder, the crane girder comprises a horizontal portion and an upper arch portion, and the upper camber measuring device on the crane girder is used to measure the upper camber of the upper arch portion, it is characterized in that , the camber measurement device on the main beam of the crane includes: a support assembly, arranged on the horizontal part; a lead screw screw, arranged on the support assembly; a running assembly, arranged on the lead screw, the running assembly can ascend or descend along the lead screw; a horizontal laser ranging assembly, arranged on the running assembly, the horizontal laser ranging assembly is used to measure the distance from the upper arch in the horizontal direction; and, The vertical laser ranging component is arranged on the running component, and the vertical laser ranging component is used to measure the distance between the vertical laser ranging component and the horizontal part in the vertical direction. 2 . The device for measuring the upper crown of a main girder of a crane according to claim 1 , wherein the support assembly comprises an upper assembly, a middle assembly and a lower assembly, and the upper assembly and the lower assembly pass through the middle assembly. 3 . The top end of the lead screw is connected to the upper assembly, and the bottom end of the lead screw is connected to the lower assembly. 3 . The device for measuring the upper crown of the main girder of a crane according to claim 2 , wherein a through hole is defined on the lower component, so that the vertical laser distance measuring component measures the The distance between the vertical laser ranging component and the horizontal part in the vertical direction. 4 . The device for measuring the upper crown of a main girder of a crane according to claim 2 , wherein the lower assembly is parallel to the horizontal portion, and the lead screw is perpendicular to the lower assembly. 5 . 5 . The device for measuring the upper crown of the main girder of a crane according to claim 2 , wherein the support assembly further comprises at least three magnetic feet, and all the magnetic feet are evenly arranged on the lower assembly. 6 . the bottom end and adsorbed on the horizontal part. 6. The device for measuring the upper crown of the main girder of a crane according to claim 1, wherein the running assembly comprises a lead screw nut, a servo motor, and a motor control module, and the lead screw nut is connected to all the screws through the thread of the inner ring. The outer ring of the lead screw screw is connected, and the servo motor is respectively connected with the lead screw nut and the motor control module. 7 . The device for measuring the upper camber of a main girder of a crane according to claim 6 , wherein the device for measuring the upper camber of the main girder of the crane further comprises a measurement data processing module, and the measurement data processing module is respectively connected to the horizontal The laser ranging component, the vertical laser ranging component and the motor control module are connected in signal. 8 . The device for measuring the upper camber of a main girder of a crane according to claim 7 , wherein the device for measuring the upper camber of the main girder of the crane further comprises a terminal, and the terminal is signal-connected to the measurement data processing module. 9 . 9 . The device for measuring the upper crown of a main beam of a crane according to claim 8 , wherein the signal connection mode is wireless, bluetooth or infrared. 10 . 10. A method for measuring the camber of a main girder of a crane, comprising: Place the camber measuring device on the main beam of the crane on the horizontal part of the main beam of the crane; Initially, the running component is set on the upper part of the lead screw, and the horizontal laser ranging component set on the running component is used to measure the distance between the horizontal laser ranging component and the upper arch of the main beam of the crane. a horizontal distance, when the laser emitted by the horizontal laser ranging assembly does not contact the apex of the upper arch, the measured horizontal distance is greater than the span of the crane main beam; and, Move the running assembly downward, when the laser emitted by the horizontal laser ranging assembly touches the apex of the upper arch, the measured horizontal distance is less than the span of the crane main beam, and the running assembly stops moving , the vertical distance between the vertical laser ranging component and the horizontal part measured by the vertical laser ranging component disposed on the running component is the upper camber of the upper arch of the main beam of the crane .

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