CN212532036U - Automatic leveling device on crane - Google Patents
Automatic leveling device on crane Download PDFInfo
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- CN212532036U CN212532036U CN202020406435.7U CN202020406435U CN212532036U CN 212532036 U CN212532036 U CN 212532036U CN 202020406435 U CN202020406435 U CN 202020406435U CN 212532036 U CN212532036 U CN 212532036U
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- lifting hook
- height
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- controller
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Abstract
The utility model provides an automatic leveling device on hoist, it is including first hoisting mechanism, first lifting hook, first absolute value encoder, second hoisting mechanism, second lifting hook, second absolute value encoder, controller, leveling button and brake button, its height through the accurate location lifting hook of absolute value encoder, and the rethread controller sets up a fixed point height, all removes two lifting hooks to fixed point height. The utility model has the advantages of simple structure, design benefit, can quick accurate leveling lifting hook, labour saving and time saving.
Description
Technical Field
The utility model belongs to hoist application is very much about an automatic levelling device on hoist.
Background
In the prior art, a crane is often used for hoisting large-tonnage equipment, and two lifting hooks must be kept balanced in the hoisting process, otherwise, once the lifting hook on one side is inclined, the equipment is easy to slide off, and the equipment damage and the serious personnel safety problem are caused. Common manual leveling does not depend on the music score by means of vision, and the adoption of common level sensors and other means still requires manual operation of operators, thus wasting time and labor.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a simple structure, design benefit, can quick accurate leveling lifting hook, labour saving and time saving's automatic levelling device on hoist.
In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides an automatic levelling device on hoist which characterized in that: which comprises a first hoisting mechanism, a first lifting hook, a first absolute value encoder, a second hoisting mechanism, a second lifting hook, a second absolute value encoder and a controller,
the first lifting mechanism is respectively connected with the controller and the first absolute value encoder, the first lifting mechanism drives the first lifting hook to ascend or descend, the second lifting mechanism is respectively connected with the controller and the second absolute value encoder, the second lifting mechanism drives the second lifting hook to ascend or descend,
the first absolute value encoder detects the height signal of the first lifting hook in real time and transmits the height signal to the controller, the second absolute value encoder detects the height signal of the second lifting hook in real time and transmits the height signal to the controller,
the controller calculates the height difference between the first lifting hook and the second lifting hook according to the height signal to obtain the height of the fixed point, and the controller adjusts the movement heights of the first lifting hook and the second lifting hook according to the height of the fixed point.
Preferably, after the first hook and the second hook move in opposite directions and pass through the same or different movement heights to reach the fixed point height, the first hook and the second hook are at the same horizontal height and enter a linkage state.
More preferably, the setpoint height is a height of one third of the height difference distance from the lower hook upwards.
Preferably, the first lifting mechanism comprises a first motor and a first winding drum, the first motor drives the first winding drum to rotate forward and backward, the first winding drum is connected with the first lifting hook and drives the first lifting hook to lift,
the second hoisting mechanism comprises a second motor and a second winding drum, the second motor drives the second winding drum to rotate positively and negatively, and the second winding drum is connected with the second lifting hook and drives the second lifting hook to lift.
More preferably, the first absolute value encoder is connected to the first reel, the first absolute value encoder detects a winding displacement of the first reel and transmits a displacement signal to the controller, the second absolute value encoder detects a winding displacement of the second reel in real time and transmits a displacement signal to the controller,
the controller obtains height signals of the first lifting hook and the second lifting hook according to the displacement signals, obtains the height difference of the first lifting hook and the second lifting hook by calculating the displacement difference of the first winding drum and the second winding drum, and accordingly determines the fixed point height.
Preferably, the crane further comprises a leveling button, the leveling button is arranged in a cab on the crane, and the leveling button is a starting button and controls the two hoisting mechanisms to automatically enter a linkage leveling state.
More preferably, the device also comprises a first brake and a second brake,
the first brake is arranged on a switch which controls the first winding drum to brake,
the second brake is arranged on the second winding drum and used for controlling the second winding drum to brake.
More preferably, the braking device further comprises a braking button, wherein the braking button is arranged in a cab on the crane and controls the two brakes to enter a braking state to stop the work of the two winding drums.
Compared with the prior art, the utility model discloses following beneficial effect has:
1. simple structure, ingenious design, and convenient industrial manufacture and large-scale popularization and use.
2. One-key leveling is adopted, operation is convenient, and leveling steps are simplified.
3. The absolute value encoder is adopted to measure the height of the lifting hook, the height of the lifting hook is adjusted by the controller, manual observation is not needed, and leveling is more accurate.
4. The leveling height is located at the height of one third of the height difference from bottom to top, the design of the fixed point height is more reasonable, the downward lifting hook can move more distances by the dead weight, and the upward lifting hook can move less distances by the dead weight.
5. By means of the design of the fixed point height, the energy consumption is saved, and the overall production cost is reduced.
Drawings
Fig. 1 is a schematic structural diagram of the automatic leveling device on the crane of the present invention.
Fig. 2 is a schematic structural view in a top view of fig. 1.
Fig. 3 is a schematic view of the working principle structure of the automatic leveling device on the crane of the present invention.
Reference numerals: the lifting device comprises a first lifting mechanism 20, a first hook 30, a first absolute value encoder 40, a second lifting mechanism 50, a second hook 60, a second absolute value encoder 70, a controller 80, a first motor 21, a first reel 22, a second motor 51, a second reel 52, a first brake 23, a second brake 53, a leveling button 90a and a brake button 90 b.
Detailed Description
To further illustrate the technical means adopted and the technical effects achieved by the present invention, the following detailed description is made with reference to the accompanying drawings and examples.
Referring to fig. 1 to 3, the present invention provides an automatic leveling device for crane, which comprises a first lifting mechanism 20, a first hook 30, a first absolute value encoder 40, a second lifting mechanism 50, a second hook 60, a second absolute value encoder 70, a controller 80, a leveling button 90a and a braking button 90 b.
In one embodiment, referring to fig. 1 and 2, the first lifting mechanism is connected to the controller and the first absolute value encoder, and the first lifting mechanism drives the first hook to ascend or descend. And the second hoisting mechanism is respectively connected with the controller and a second absolute value encoder, and drives the second lifting hook to ascend or descend.
The first absolute value encoder detects a height signal of the first lifting hook in real time and transmits the height signal to the controller; and the second absolute value encoder detects the height signal of the second lifting hook in real time and transmits the height signal to the controller.
The controller calculates the height difference between the first lifting hook and the second lifting hook according to the height signal to obtain the height of the fixed point, and the controller adjusts the movement heights of the first lifting hook and the second lifting hook according to the height of the fixed point.
In one embodiment, after the first hook and the second hook pass through the same or different movement heights in opposite directions to reach the fixed point height, the first hook and the second hook are at the same horizontal height and enter a linkage state.
In one embodiment, the setpoint height is a height one third of the height difference distance up from the lower hook.
Referring to fig. 3, the first lifting mechanism includes a first motor and a first drum, the first motor drives the first drum to rotate forward and backward, the first drum is connected to the first hook and drives the first hook to lift,
the second hoisting mechanism comprises a second motor and a second winding drum, the second motor drives the second winding drum to rotate positively and negatively, and the second winding drum is connected with the second lifting hook and drives the second lifting hook to lift.
The first absolute value encoder is connected with the first winding drum, detects the winding displacement of the first winding drum and transmits a displacement signal to the controller, the second absolute value encoder detects the winding displacement of the second winding drum in real time and transmits the displacement signal to the controller,
the controller obtains height signals of the first lifting hook and the second lifting hook according to the displacement signals, obtains the height difference of the first lifting hook and the second lifting hook by calculating the displacement difference of the first winding drum and the second winding drum, and accordingly determines the fixed point height.
The first hoisting mechanism and the second hoisting mechanism further comprise a first brake and a second brake, the first brake is arranged on the first winding drum to control a switch for braking the first winding drum, and the second brake is arranged on the second winding drum to control a switch for braking the second winding drum.
In one embodiment, the leveling button is arranged in a cab of the crane, and the leveling button is a starting button which controls the two hoisting mechanisms to automatically enter a linkage leveling state.
The brake button is arranged in a cab on the crane and controls the two brakes to enter a braking state to stop the two winding drums.
The invention has been described above with a certain degree of particularity and detail. It will be understood by those of ordinary skill in the art that the description of the embodiments is merely exemplary and that all changes that may be made without departing from the true spirit and scope of the present invention are intended to be within the scope of the present invention. The scope of the invention is defined by the appended claims rather than by the foregoing description of the embodiments.
Claims (8)
1. The utility model provides an automatic levelling device on hoist which characterized in that: which comprises a first hoisting mechanism, a first lifting hook, a first absolute value encoder, a second hoisting mechanism, a second lifting hook, a second absolute value encoder and a controller,
the first lifting mechanism is respectively connected with the controller and the first absolute value encoder, the first lifting mechanism drives the first lifting hook to ascend or descend, the second lifting mechanism is respectively connected with the controller and the second absolute value encoder, the second lifting mechanism drives the second lifting hook to ascend or descend,
the first absolute value encoder detects the height signal of the first lifting hook in real time and transmits the height signal to the controller, the second absolute value encoder detects the height signal of the second lifting hook in real time and transmits the height signal to the controller,
the controller calculates the height difference between the first lifting hook and the second lifting hook according to the height signal to obtain the height of the fixed point, and the controller adjusts the movement heights of the first lifting hook and the second lifting hook according to the height of the fixed point.
2. The automatic leveling device on crane according to claim 1, wherein: after the first lifting hook and the second lifting hook move in opposite directions and reach the fixed point height through the same or different movement heights, the first lifting hook and the second lifting hook are at the same horizontal height and enter a linkage state.
3. The automatic leveling device on crane according to claim 2, wherein: the fixed point height is the height of one third of the height difference distance from the lower lifting hook upwards.
4. The automatic leveling device on crane according to claim 1, wherein:
the first lifting mechanism comprises a first motor and a first winding drum, the first motor drives the first winding drum to rotate positively and negatively, the first winding drum is connected with the first lifting hook and drives the first lifting hook to lift,
the second hoisting mechanism comprises a second motor and a second winding drum, the second motor drives the second winding drum to rotate positively and negatively, and the second winding drum is connected with the second lifting hook and drives the second lifting hook to lift.
5. The automatic leveling device on crane according to claim 4, wherein:
the first absolute value encoder is connected with the first winding drum, detects the winding displacement of the first winding drum and transmits a displacement signal to the controller, the second absolute value encoder detects the winding displacement of the second winding drum in real time and transmits the displacement signal to the controller,
the controller obtains height signals of the first lifting hook and the second lifting hook according to the displacement signals, obtains the height difference of the first lifting hook and the second lifting hook by calculating the displacement difference of the first winding drum and the second winding drum, and accordingly determines the fixed point height.
6. The automatic leveling device on crane according to claim 1, wherein: the leveling mechanism is characterized by further comprising a leveling button, the leveling button is arranged in a cab on the crane and is a starting button, and the leveling button controls the two lifting mechanisms to automatically enter a linkage leveling state.
7. The automatic leveling device on crane according to claim 4, wherein: it also comprises a first brake and a second brake,
the first brake is arranged on a switch which controls the first winding drum to brake,
the second brake is arranged on the second winding drum and used for controlling the second winding drum to brake.
8. The automatic leveling device on crane according to claim 6, wherein: the brake device further comprises a brake button, wherein the brake button is arranged in a cab on the crane and used for controlling the two brakes to enter a braking state and stopping the two winding drums.
Priority Applications (1)
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CN202020406435.7U CN212532036U (en) | 2020-03-26 | 2020-03-26 | Automatic leveling device on crane |
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CN202020406435.7U CN212532036U (en) | 2020-03-26 | 2020-03-26 | Automatic leveling device on crane |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN111348553A (en) * | 2020-03-26 | 2020-06-30 | 上海宝松盐城重型机械工程有限公司 | Automatic leveling device on crane |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN111348553A (en) * | 2020-03-26 | 2020-06-30 | 上海宝松盐城重型机械工程有限公司 | Automatic leveling device on crane |
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