CN217838158U

CN217838158U - Crane overload weight monitoring device

Info

Publication number: CN217838158U
Application number: CN202221881876.8U
Authority: CN
Inventors: 赖济华; 赖凌华
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-07-21
Filing date: 2022-07-21
Publication date: 2022-11-18
Anticipated expiration: 2032-07-21

Abstract

The utility model discloses a hoist overload weight monitoring devices, including shell, data processor, warning module and power module, data processor fixed mounting in the shell, still include: the crane hook motor comprises a motor power monitor, a data processor and a data processing unit, wherein the motor power monitor is used for monitoring electric power of a hook motor of a crane during working, the motor power monitor consists of a current transformer and a voltage transformer, and the motor power monitor is connected with a data acquisition end of the data processor through a digital-to-analog converter; and the steel rope speed monitor is used for detecting the steel rope rolling speed of the crane and is connected with the data acquisition end of the data processor through the digital-to-analog converter. The utility model discloses a hoist overload weight monitoring devices can get rid of the error that rope speed arouses at a slow rate when data processor calculates load weight, has the more accurate technological effect of measuring result.

Description

Crane overload weight monitoring device

Technical Field

The utility model relates to a hoist technical field especially relates to a hoist overload weight monitoring devices.

Background

The crane is one of special equipment, and refers to a multi-action crane for vertically lifting and horizontally carrying heavy objects within a certain range. The crane has the working characteristics of intermittent movement, namely corresponding mechanisms for taking materials, transporting, unloading and the like in one working cycle work alternately, so that the crane is more and more widely developed and used in the market. The crane mainly comprises a hoisting mechanism, a running mechanism, a luffing mechanism, a metal structure, a slewing mechanism and the like. The hoisting mechanism is the basic working mechanism of the crane, mostly consists of a hanging system and a winch, and also lifts heavy objects through a hydraulic system. The running mechanism is used for longitudinally and horizontally moving a heavy object or adjusting the working position of the crane and generally comprises a motor, a speed reducer, a brake and wheels. The luffing mechanism is only arranged on the jib crane, the amplitude is reduced when the jib crane is lifted up, the amplitude is increased when the jib crane is lifted down, and the luffing mechanism is divided into balanced luffing and unbalanced luffing. The slewing mechanism is used for enabling the arm support to slew and consists of a driving device and a slewing bearing device. The metal structure is the framework of the crane, and the main bearing parts such as a bridge frame, an arm support and a portal frame can be box-shaped structures or truss structures, can also be web structures, and can use section steel as a supporting beam.

The document with application number 202021782262.5 discloses a crane overload weight monitoring device, which comprises: a processor module having an early warning output and an overload output; the main hook motor current transformer is used for monitoring the current of the main hook motor and is connected with the data acquisition end of the processor module through a main hook analog-to-digital converter; the auxiliary hook motor current transformer is used for monitoring the current of an auxiliary hook motor and is connected with the data acquisition end of the processor module through an auxiliary hook analog-to-digital converter. However, in the actual use process, in the same load, the faster the crane lifts the load through the hook, the larger the motor running current, so the existing crane overload weight monitoring device judges that the weight error of the load is larger only according to the current when the motor runs.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a hoist overload weight monitoring devices aims at solving the great technical problem of the weight error that current hoist overload weight monitoring devices only judged the load according to the electric current when the motor operated.

In order to realize the purpose, the utility model adopts the following technical scheme:

the utility model provides a hoist overload weight monitoring devices, includes shell, data processor, warning module and power module, data processor fixed mounting still includes in the shell:

the crane hook motor comprises a motor power monitor, a data processor and a data processing unit, wherein the motor power monitor is used for monitoring the electric power of a hook motor of a crane during working, consists of a current transformer and a voltage transformer and is connected with a data acquisition end of the data processor through a digital-to-analog converter;

the cable speed monitor is used for detecting the cable winding speed of the crane and is connected with the data acquisition end of the data processor through the digital-to-analog converter;

and the operation panel is arranged on an operation platform of the crane and is used for controlling the start and stop of the load measurement.

During the use, personnel start the lifting hook motor through the button on the operating panel in the control room of hoist for the cable wire is rolled up, the hoist is mentioned the load at the uniform velocity, the electric power P of in-process detection lifting hook motor during operation and the rolling speed V of cable wire of mentioning the load, because P = F · V, when the uniform velocity is promoted, the numerical value of pulling force F on the cable wire equals the weight mg's of load numerical value, consequently can more accurate calculation load's quality m under the condition of the lifting speed of survey cable wire, get rid of the error that the rope speed arouses when data processor calculates load weight with this, make measuring result more accurate.

In a preferred scheme, the warning module is an indicator light and/or a sound prompter arranged on the operation panel, and the warning module is electrically connected with a digital-to-analog converter of the processor; after the data processor calculates the load weight data, the data processor compares the load weight data with the load weight data to judge whether the current load is overweight, and the judgment result is informed to an operator through the warning module.

In a preferred scheme, the shell consists of a placing box and a top cover, the data processor is fixedly arranged in a cavity formed by the placing box and the top cover, a lamp body used for representing the running state of the data processor is arranged on a circuit board where the data processor is located, a through hole is formed in the top cover, a light guide column is in threaded connection with the inner wall of the through hole, and the light guide column can move up and down in the through hole due to the fact that the light guide column is in threaded connection with the inner wall of the through hole, so that the bottom of the light guide column is closer to the lamp body, the indication of a lamp bead is more accurate, and the phenomenon of light mixing on the light guide column caused by the fact that the distance between the light guide column and the lamp body is far is reduced; the shell and the light guide column can adapt to circuit boards of more lamp bodies.

In a preferred scheme, the bottom outer wall of the light guide column is provided with a groove, the groove is matched with the lamp body, so that the top of the lamp body extends into the groove, light emitted by the lamp body enters the corresponding light guide column more completely, and the purpose of accurate indication is further achieved.

In a preferred scheme, the inner wall bottom of top cap is provided with the thickening piece, the thickening piece is located the below of through-hole, the through-hole runs through the thickening piece, the thickening piece of increase is used for increasing the connection depth of leaded light post bottom screw thread, and the leaded light post of being convenient for is more stable installs in the through-hole to this need not thicken whole top cap, in hoisting device's stability, is favorable to holding device's lightweight, reduces the material.

From the above, a hoist overload weight monitoring devices, includes shell, data processor, warning module and power module, data processor fixed mounting still includes in the shell: the crane hook motor comprises a motor power monitor, a data processor and a data processing unit, wherein the motor power monitor is used for monitoring electric power of a hook motor of a crane during working, the motor power monitor consists of a current transformer and a voltage transformer, and the motor power monitor is connected with a data acquisition end of the data processor through a digital-to-analog converter; the cable speed monitor is used for detecting the cable winding speed of the crane and is connected with the data acquisition end of the data processor through the digital-to-analog converter; and the operation panel is arranged on an operation platform of the crane. The utility model provides a pair of hoist overload weight monitoring devices can get rid of the error that rope speed arouses at a slow rate when data processor calculates load weight, has the more accurate technological effect of measuring result.

The parts of the device not involved are the same as or can be implemented using prior art.

Drawings

Fig. 1 is a schematic block diagram of a crane overload weight monitoring device provided by the present invention.

Fig. 2 is the utility model provides a top cap structure sketch map of hoist overload weight monitoring devices.

Fig. 3 is the utility model provides a light guide pillar structure sketch map of hoist overload weight monitoring devices.

In the drawings: 1. a motor power monitor; 2. a wire rope speed monitor; 3. a data processor; 4. a warning module; 5. a display module; 6. a wireless communication module; 7. a power supply module; 8. a top cover; 9. thickening blocks; 10. a light guide pillar; 11. a groove; 12. and (4) ejecting a cap.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

The utility model discloses a hoist overload weight monitoring devices mainly is applied to in-service use in-process, same load, and the hoist promotes the speed of carrying the thing through the lifting hook faster, and motor running current is big more, but the increase of motor operating current carries the thing elevating speed grow and arouses, consequently, the great scene of weight error of load is judged to current when current crane overload weight monitoring devices only operates according to the motor.

Referring to fig. 1, a crane overload weight monitoring device includes a housing, a data processor 3, a warning module 4 and a power module 7, the data processor 3 is fixedly installed in the housing, and further includes:

the crane hook power monitoring system comprises a motor power monitor 1, wherein the motor power monitor 1 is used for monitoring electric power of a hook motor of a crane during working, the motor power monitor 1 consists of a current transformer and a voltage transformer, and the motor power monitor 1 is connected with a data acquisition end of a data processor 3 through a digital-to-analog converter;

the speed monitor 2 of the steel rope, the speed monitor 2 of the steel rope is used for detecting the steel rope winding speed of the hoist, and the speed monitor 2 of the steel rope is connected with data acquisition end of the data processor 3 through the digital-to-analog converter;

and the operation panel is arranged on an operation table of the crane and used for controlling the start and stop of the load measurement.

During the use, personnel start the lifting hook motor through the button on the operating panel in the control room of hoist for the cable wire is rolled up, the hoist is mentioned the load at the uniform velocity, detect electric power P and the rolling speed V of cable wire when lifting hook motor during the in-process of mentioning the load, because P = F.V, when mentioning at the uniform velocity, the numerical value of pulling force F on the cable wire equals the weight mg's of load numerical value, consequently can more accurate calculation load's quality m under the condition of the lifting speed of survey cable wire, get rid of the error that the rope speed arouses when data processor 3 calculates load weight with this, make measuring result more accurate.

Wherein g is a gravitational constant and the power module 7 provides power to the data processor 3.

When the winding speed of the steel cable is measured, the movement of the steel cable can be identified by coating the color mark on the steel cable, so that the winding speed of the steel cable can be calculated conveniently.

In a preferred embodiment, the warning module 4 is an indicator light and/or a sound prompter disposed on the operation panel, and the warning module 4 is electrically connected to a digital-to-analog converter of the processor; after the data processor 3 calculates the load weight data, the data processor 3 compares the data to judge whether the current load is overweight, and informs the judgment result to the operator through the warning module 4, for example, when the load is overweight, the indicator light emits red light and/or the sound prompter emits a prompting signal of 'overweight, please reduce the load in time'; if the weight is not overweight, the indicating lamp emits green light and/or the sound prompter emits a prompting signal of normal load.

In a preferred embodiment, a display module 5 is disposed on the operation panel, the display module 5 is connected to an output end of a digital-to-analog converter of the data processor 3, and the display module 5 is a liquid crystal display for displaying an operation result of the load-carrying program, such as a prompt icon for displaying the calculated load-carrying mass m and/or whether the load-carrying mass m is overweight.

In a preferred embodiment, the data processor 3 is further connected with a wireless communication module 6, and the wireless communication module 6 is a Wi-Fi module, a 5G network module and a bluetooth module, so that a person can conveniently know the measurement result through data interaction of the wireless communication module 6 through software on a mobile phone terminal.

Referring to fig. 2 and 3, in a preferred embodiment, the housing is composed of a placing box and a top cover 8, the data processor 3 is fixedly installed in a cavity composed of the placing box and the top cover 8, a lamp body used for representing the running state of the data processor 3 is arranged on a circuit board where the data processor 3 is located, a through hole is formed in the top cover 8, the inner wall of the through hole is in threaded connection with the light guide column 10, and the light guide column 10 can move up and down in the through hole due to the fact that the light guide column 10 is in threaded connection with the inner wall of the through hole, so that the bottom of the light guide column 10 is closer to the lamp body, the indication of a lamp bead is more accurate, and the phenomenon of light mixing on the light guide column 10 caused by the fact that the light guide column 10 is far away from the lamp body is reduced; so that the housing and the light guide post 10 can be adapted to circuit boards of more lamp bodies.

In a preferred embodiment, the bottom outer wall of the light guiding column 10 is provided with a groove 11, the groove 11 is adapted to the lamp body, so that the top of the lamp body extends into the groove 11, and the light emitted by the lamp body enters the corresponding light guiding column 10 more completely, thereby further achieving the purpose of accurate indication.

In a preferred embodiment, the top outer wall of the light guide pole 10 is integrally provided with a top cap 12, the upper edge of the top cap 12 is provided with a rounded corner, and the outer wall of the top cap 12 is smooth, so that the light guide pole 10 can be held by the top cap 12.

Wherein, the top cover 8 is connected with the placing box through a bolt.

In a preferred embodiment, the inner wall bottom of top cap 8 is provided with thickening piece 9, thickening piece 9 is located the below of through-hole, the through-hole runs through thickening piece 9, the thickening piece 9 of increase is used for increasing the connection depth of light guide column 10 bottom screw thread, the more stable installation in the through-hole of light guide column 10 of being convenient for to this need not thicken whole top cap 8, in hoisting device's stability, be favorable to holding device's lightweight, reduce the materials.

The working principle is as follows: during the use, personnel start the lifting hook motor through the button on the operating panel in the control room of hoist for the cable wire is rolled up, the hoist is mentioned the load at the uniform velocity, detect electric power P and the rolling speed V of cable wire when lifting hook motor during the in-process of mentioning the load, because P = F.V, when mentioning at the uniform velocity, the numerical value of pulling force F on the cable wire equals the weight mg's of load numerical value, consequently can more accurate calculation load's quality m under the condition of the lifting speed of survey cable wire, get rid of the error that the rope speed arouses when data processor 3 calculates load weight with this, make measuring result more accurate.

The above description is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto. The substitution may be of partial structures, devices, method steps, or may be a complete solution. According to the technical scheme of the utility model and utility model thereof think of and equal replacement or change, all should cover within the scope of protection of the utility model.

Claims

1. The utility model provides a hoist overload weight monitoring devices, includes shell, data processor (3), warning module (4) and power module (7), data processor (3) fixed mounting in the shell, its characterized in that still includes:

the crane hook power monitoring system comprises a motor power monitor (1), wherein the motor power monitor (1) is used for monitoring electric power of a hook motor of a crane during working, the motor power monitor (1) consists of a current transformer and a voltage transformer, and the motor power monitor (1) is connected with a data acquisition end of a data processor (3) through a digital-to-analog converter;

the steel rope speed monitor (2) is used for detecting the steel rope rolling speed of the crane, and the steel rope speed monitor (2) is connected with the data acquisition end of the data processor (3) through the digital-to-analog converter;

and the operation panel is arranged on an operation table of the crane.

2. The crane overload monitoring device according to claim 1, wherein the warning module (4) is an indicator light and/or a sound prompter disposed on the operation panel, and the warning module (4) is electrically connected to the digital-to-analog converter of the processor.

3. The crane overload monitoring device according to claim 2, wherein a display module (5) is disposed on the operation panel, the display module (5) is connected to an output end of the digital-to-analog converter of the data processor (3), and the display module (5) is a liquid crystal display.

4. The crane overload monitoring device according to claim 1, wherein the data processor (3) is further connected with a wireless communication module (6), and the wireless communication module (6) is a Wi-Fi module, a 5G network module or a bluetooth module.

5. The crane overload monitoring device according to claim 1, wherein the housing is composed of a placement box and a top cover (8), the data processor (3) is fixedly installed in a cavity formed by the placement box and the top cover (8), a lamp body used for indicating the operation state of the data processor (3) is arranged on a circuit board on which the data processor (3) is arranged, a through hole is formed in the top cover (8), and a light guide column (10) is connected to the inner wall of the through hole in a threaded manner.

6. The overload monitoring device for crane according to claim 5, wherein the bottom outer wall of the light guide pillar (10) is provided with a groove (11), and the groove (11) is adapted to the lamp body.

7. A crane overload monitoring device according to claim 5, wherein the top outer wall of the light guide pillar (10) is integrally provided with a top cap (12), the upper edge of the top cap (12) is provided with a round corner, and the outer wall of the top cap (12) is smooth.

8. A crane overload monitoring device according to claim 5, wherein the inner wall bottom of the top cover (8) is provided with a thickened block (9), the thickened block (9) is positioned below the through hole, and the through hole penetrates through the thickened block (9).