Coil falling prevention mechanism of steel coil lifting device

Abstract

The utility model relates to the technical field of steel coil lifting and falling prevention, in particular to a coil falling prevention mechanism of a steel coil lifting device, which comprises a steel coil seat, a lifting rack, a lifting hydraulic cylinder, an explosion-proof mechanism, an oil inlet pipe and a pressure sensor. An oil inlet pipe is arranged in a rodless cavity of the lifting hydraulic cylinder, an anti-explosion mechanism is arranged at the connecting position of the bottom of the oil inlet pipe and the rodless cavity, a pressure sensor is arranged on the oil inlet pipe, and the anti-explosion mechanism and the pressure sensor are in interlocking control. The safety of surrounding operators is improved, the risk that surrounding equipment is smashed is avoided, and the potential safety hazard of steel coil lifting is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to steel coil hoisting anti -fall technical field especially relates to a kind of steel coil hoisting device anti -fall roll mechanism. BACKGROUND

[0002] Steel coil hoisting device is used for vertical or horizontal handling steel coil special equipment, widely used in steel plant, logistics warehouse, automobile manufacturing etc. Field. Its main function includes lifting, overturning, stacking, loading and unloading etc., need to ensure safety, efficient, stable, avoid steel coil deformation or injury.

[0003] Steel coil hoisting device of steel coil transport area steel coil is lifted, and the hydraulic cylinder is greatly pressed vertically downward when working, and there is a probability that the hydraulic pipeline bursts, the hydraulic cylinder hydraulic rod loses supporting pressure, the hydraulic rod instantaneously drops, so that the steel coil instantaneously falls, causes steel coil damage, surrounding operator injury, nearby related equipment smash etc. Occur, high risk, security risk is huge, need a kind of steel coil hoisting device anti -fall roll mechanism to ensure that the steel coil position is locked not to fall under the condition of hydraulic pipeline burst. UTILITY MODEL CONTENTS

[0004] In order to overcome the deficiencies of the prior art, the utility model provides a kind of steel coil hoisting device anti -fall roll mechanism, and when the oil pressure in the burst pipe is suddenly reduced and is detected by pressure sensor, interlock control explosion-proof mechanism is reversed to cut off the hydraulic cylinder rod cavity to the oil inlet pipe leakage hydraulic oil, and the hydraulic oil is locked in the rod cavity, the hydraulic rod is locked reversely, together with the lifting rack, the steel coil seat and the steel coil are locked in the current position, to avoid falling roll accident, improve the protection ability of steel coil, improve the safety of surrounding operator, avoid the risk of surrounding equipment being smashed, avoid the security risk of steel coil lifting.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0006] A kind of steel coil hoisting device anti -fall roll mechanism, including steel coil seat, lifting rack, lifting hydraulic cylinder, explosion-proof mechanism, oil inlet pipe and pressure sensor, the lifting rack top is provided with steel coil seat, lifting rack bottom is provided with lifting hydraulic cylinder, the rod cavity of the lifting hydraulic cylinder is provided with oil inlet pipe, and explosion-proof mechanism is arranged at the connection position of the bottom of oil inlet pipe and rod cavity, pressure sensor is arranged on the oil inlet pipe, and interlock control is arranged between the explosion-proof mechanism and pressure sensor.

[0007] Further, the explosion-proof mechanism includes upper reducing pipe, lower reducing pipe, explosion-proof valve and pipe joint, the oil inlet pipe is connected with the upper reducing pipe, the upper reducing pipe is connected with the explosion-proof valve, the explosion-proof valve is connected with the lower reducing pipe, and the lower reducing pipe is connected with the bottom of the rod cavity of the lifting hydraulic cylinder through the pipe joint.

[0008] Further, the explosion-proof valve reversely cuts off the connection between the rodless cavity and the oil inlet pipe when the oil inlet pipe explodes.

[0009] Further, the pressure sensor detects the oil pressure in the oil inlet pipe.

[0010] Further, the interlocking control is that when the pressure sensor detects that the oil pressure in the oil inlet pipe is suddenly lower than the set value, the interlocking control explosion-proof mechanism cuts off the connection between the rodless cavity and the oil inlet pipe in the lifting hydraulic cylinder.

[0011] Compared with the prior art, the explosion-proof mechanism of the present application has the following advantages:

[0012] 1) The explosion-proof mechanism cuts off the connection between the rodless cavity and the oil inlet pipe when the oil inlet pipe explodes, prevents the reverse leakage of hydraulic oil in the rodless cavity, reversely locks the hydraulic rod, locks the lifting rack, the steel coil seat and the steel coil together at the current position, avoids the coil falling accident, improves the steel coil protection capability, improves the safety of the surrounding operators, avoids the risk of damaging the surrounding equipment, and avoids the safety hazard of the steel coil lifting.

[0013] 2) The oil inlet pipe is provided with a pressure sensor to detect the oil pressure in the oil inlet pipe, and when the oil pressure is suddenly lower than the set value, the interlocking control explosion-proof mechanism is actuated, the hydraulic oil in the rodless cavity is reversely cut off from the oil inlet pipe, the interlocking control is sensitive, accurate and high in control degree, prevents the explosion-proof mechanism from malfunctioning and affecting the operation of the lifting device, improves the smoothness of the lifting device, and improves the anti-falling capability of the lifting device.

[0014] 3) The structure is simple and compact, does not require high cost investment, reduces the investment cost, realizes the anti-falling of the lifted steel coil, has high practicality, wide application range, flexible use, and convenient replacement and maintenance. BRIEF DESCRIPTION OF DRAWINGS

[0015] Fig. 1 is a structural schematic view of the anti-falling mechanism of the steel coil lifting device.

[0016] Fig. 2 is a structural schematic view of the explosion-proof mechanism.

[0017] In the figure: 1, explosion-proof mechanism; 2, oil inlet pipe; 3, pressure sensor; 4, lifting hydraulic cylinder; 5, oil outlet pipe; 6, lifting rack; 7, steel coil seat; 8, steel coil; 11, upper reducing pipe; 12, explosion-proof valve; 13, lower reducing pipe; 14, pipe joint. DETAILED DESCRIPTION

[0018] The specific embodiments of the present application will be further described below in combination with the drawings:

[0019] For example, Figs. 1-2As shown, the working principle of a steel coil lifting device anti-falling roll mechanism: the lifting device lifts the hydraulic cylinder 4 through the oil pressure in the oil tank cavity to push out the hydraulic rod to lift the lifting platform 6, at the same time, the steel coil seat 7 and the steel coil 8 on the lifting platform 6 are lifted, the oil inlet pipe 2 connected with the oil tank cavity sends high-pressure hydraulic oil into the oil tank cavity when lifting the steel coil 8 and keeping the steel coil 8 in the lifting position, if the high-pressure hydraulic oil causes the oil inlet pipe 2 to burst, the oil pressure in the oil inlet pipe 2 detected by the pressure sensor 3 drops rapidly, when the oil pressure suddenly drops to the set value, the pressure sensor 3 transmits a cut-off signal to the control system, the interlocking control anti-explosion valve 12 in the explosion-proof mechanism 1 cuts off the connection between the oil tank cavity and the oil inlet pipe 2, preventing the hydraulic oil in the oil tank cavity from flowing out from the burst oil inlet pipe 2 in the opposite direction, the hydraulic oil is locked in the oil tank cavity, the hydraulic oil in the oil tank cavity continues to support the fixed hydraulic rod, so that the hydraulic rod together with the lifting platform 6, the steel coil seat 7 and the steel coil 8 are locked in the current position, preventing the steel coil 8 from falling.

[0020] As shown, Figs. 1-2 A steel coil lifting device anti-falling roll mechanism, including a steel coil seat 7, a lifting platform 6, a lifting hydraulic cylinder 4, an explosion-proof mechanism 1, an oil inlet pipe 2, an oil outlet pipe 5 and a pressure sensor 3, the lifting platform 6 is provided with a steel coil seat 7 at the top, the lifting platform 6 is provided with a lifting hydraulic cylinder 4 at the bottom, the steel coil seat 7 is provided as a V-shaped seat, the steel coil 8 is lifted in the steel coil seat 7, the lifting platform 6 is set at the bottom of the steel coil seat 7, the lifting platform 6 slides up and down to lift, the bottom of the lifting platform 6 is provided with a lifting hydraulic cylinder 4, the lifting hydraulic cylinder 4 lifts the lifting platform 6 and the steel coil seat 7, the oil tank cavity of the lifting hydraulic cylinder 4 is provided with an oil inlet pipe 2, the oil tank cavity of the lifting hydraulic cylinder 4 is provided with an oil outlet pipe 5, when the lifting device lifts the steel coil 8 and keeps the steel coil 8 in the lifting state, the oil inlet pipe 2 inputs high-pressure oil into the oil tank cavity, the oil outlet pipe 5 outputs normal-pressure oil from the oil tank cavity, the high pressure of the high-pressure oil in the oil inlet pipe 2 is easy to cause the oil inlet pipe 2 to burst, the explosion-proof mechanism 1 is set at the connection position between the bottom of the oil inlet pipe 2 and the oil tank cavity, the pressure sensor 3 is set on the oil inlet pipe 2, the explosion-proof mechanism 1 and the pressure sensor 3 are interlocked, when the oil inlet pipe 2 bursts, the pressure in the oil inlet pipe 2 drops suddenly, when the pressure sensor 3 detects that the oil pressure in the pipe drops suddenly to the set value, a signal is transmitted to the terminal control system, the explosion-proof valve 12 in the explosion-proof mechanism 1 is controlled to act immediately, the passage from the oil tank cavity to the oil inlet pipe 2 is cut off, the hydraulic oil in the oil tank cavity is locked in the oil tank cavity, the lifting platform 6, the steel coil seat 7 and the steel coil 8 supported by the lifting hydraulic cylinder 4 are locked in the current position in the opposite direction, avoiding the steel coil 8 from falling caused by the burst of the oil inlet pipe 2, improving the safety and stability of the steel coil 8 lifting.

[0021] Further, the explosion-proof mechanism 1 comprises an upper reducing pipe 11, a lower reducing pipe 13, an explosion-proof valve 12 and a pipe joint 14, the oil inlet pipe 2 is connected with the upper reducing pipe 11, the upper reducing pipe 11 is connected with the explosion-proof valve 12, the explosion-proof valve 12 is connected with the lower reducing pipe 13, and the lower reducing pipe 13 is connected with the bottom of the rodless cavity of the lifting hydraulic cylinder 4 through the pipe joint 14.

[0022] Further, the explosion-proof valve 12 reversely cuts off the connection between the rodless cavity and the oil inlet pipe 2 when the oil inlet pipe 2 explodes, and when the oil inlet pipe 2 explodes, the explosion-proof valve 12 acts to cut off the reverse leakage path of the rodless cavity to the oil inlet pipe 2, reversely locks the hydraulic oil in the rodless cavity, keeps the hydraulic rod at the current lifting height, keeps the steel coil 8 at the current position, and avoids the falling accident of the steel coil 8, thereby improving the safety of the lifting of the steel coil 8.

[0023] Further, the pressure sensor 3 detects the oil pressure in the oil inlet pipe 2.

[0024] Further, the interlocking control is that when the pressure sensor detects that the oil pressure in the oil inlet pipe 2 is suddenly lower than the set value, the interlocking control cuts off the connection between the rodless cavity of the lifting hydraulic cylinder 4 and the oil inlet pipe 2. During the lifting of the steel coil 8, the oil inlet pipe 2 provides high-pressure hydraulic oil to support the lifting rack 6, the steel coil 8 and the steel coil seat 7, and the pressure in the oil inlet pipe 2 is usually large. Once the oil inlet pipe 2 explodes, the pressure in the oil inlet pipe 2 will sharply decrease, and the pressure sensor 3 detects the rapidly decreased pressure and controls the explosion-proof mechanism 1 to act through the control system, the explosion-proof valve 12 cuts off the path of the rodless cavity of the hydraulic cylinder to the oil inlet pipe 2, prevents the reverse leakage of the hydraulic oil in the rodless cavity of the lifting hydraulic cylinder 4, locks the hydraulic oil in the rodless cavity, ensures the current position of the steel coil 8, and avoids the falling accident of the steel coil 8.

[0025] The above is only the preferred specific implementation of the present application, but the protection scope of the present application is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical scheme and concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A steel coil lifting device with anti-fall mechanism, comprising a steel coil seat, a lifting platform, a lifting hydraulic cylinder, an explosion-proof mechanism, an oil inlet pipe, an oil outlet pipe, and a pressure sensor, wherein the steel coil seat is disposed at the top of the lifting platform, and the lifting hydraulic cylinder is disposed at the bottom of the lifting platform, characterized in that, The rodless chamber of the lifting hydraulic cylinder is provided with an oil inlet pipe, and an explosion-proof mechanism is provided at the connection position between the bottom of the oil inlet pipe and the rodless chamber. A pressure sensor is provided on the oil inlet pipe, and the explosion-proof mechanism and the pressure sensor are interlocked.

2. The anti-fall mechanism for a steel coil lifting device according to claim 1, characterized in that, The explosion-proof mechanism includes an upper reducing pipe, a lower reducing pipe, an explosion-proof valve, and a pipe joint. The oil inlet pipe is connected to the upper reducing pipe, the upper reducing pipe is connected to the explosion-proof valve, the explosion-proof valve is connected to the lower reducing pipe, and the lower reducing pipe is connected to the bottom of the rodless chamber of the lifting hydraulic cylinder through the pipe joint.

3. The anti-fall mechanism for a steel coil lifting device according to claim 2, characterized in that, The explosion-proof valve reverses the connection between the rodless chamber and the oil inlet pipe when the oil inlet pipe ruptures.

4. The anti-fall mechanism for a steel coil lifting device according to claim 1, characterized in that, The pressure sensor detects the oil pressure inside the oil inlet pipe.

5. The anti-fall mechanism for a steel coil lifting device according to claim 1, characterized in that, The interlock control is that when the pressure sensor detects that the oil pressure in the inlet pipe suddenly drops below the set value, the interlock control explosion-proof mechanism cuts off the connection between the rodless chamber in the lifting hydraulic cylinder and the inlet pipe.

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