Weight measurement system for pickup crane

Abstract

The present invention comprises: a drum (10) formed on one side of the upper part of a crane body to wind or unwind a rope (30); a driving means (20) for rotating the drum (10) in the forward or reverse direction; a tube (40) formed to be installed on the lower part of the rope (30) to grip a transport object (A); a weight measuring means (50) formed on one side of the drum (10); a plurality of rotating bodies (110) positioned at the front and rear of the drum (10) to allow the rope (30) to circulate; and a load measuring means (120) formed at the center or one side of the rotating bodies (110) to measure the load of the rotating bodies (110) which varies according to the weight of the transport object (A). The present invention provides a weight measuring system for a pickup crane comprising: a control unit (130) formed to measure the weight of a transported object (A) using data from the weight measuring means (50) and the load measuring means (120), and to operate or stop the driving means (20). The present invention has the effect of improving the work efficiency of the pickup crane by measuring the weight of the transported object uniformly without bias. Furthermore, the present invention has the effect of ensuring reliability by measuring the weight of the transported object in a dual manner, so that even if one measuring means fails or malfunctions, the other measuring means compensates for it. In particular, the present invention has the effect of minimizing operational delays and safety accidents by preventing excessive unraveling and displacement of the rope that occurs during the process of placing the transported object on the table. Additionally, the present invention has the effect of increasing usage efficiency and range of application by having a simple structure and easy maintenance.

Description

Technology Field

[0001] The present invention relates to a weight measuring system for a pickup crane, and more specifically, to a weight measuring system for a pickup crane capable of measuring the weight of a transported object and verifying whether it has been settled. Background Technology

[0002] Generally, pickup cranes are used in steel mills or industrial sites to transport heavy loads (such as slabs) to designated locations.

[0003] As shown in FIG. 1, this pickup crane includes: a drum (10) formed on one side of the upper part of the crane body to wind or unwind a rope (30); a driving means (20) for rotating the drum (10) in the forward or reverse direction; a tube (40) formed to be installed on the lower part of the rope (30) to grip a transport object (A); and a weight measuring means (50) formed on one side of the drum (10).

[0004] In particular, as shown in FIG. 2, the weight can be measured according to the load of the drum (10) that occurs during the transport process of the transported object (A) using the weight measuring means (50), and the weight can be determined according to the weight that changes during the process of placing the transported object (A) on the table (B).

[0005] However, conventionally, the weight measuring means (50) is biased to one side of the drum (10), so it cannot accurately measure the weight, which leads to a problem of reduced measurement efficiency and reliability.

[0006] In addition, if the presence or absence of the transported object (A) cannot be accurately confirmed due to a failure or malfunction of the weight measuring means (50), accurate control of the drum (10) is impossible, resulting in a problem of safety accidents such as excessive unraveling and displacement of the rope (30). Prior art literature

[0007] U.S. Registered Patent Publication No. 3866464 (Feb. 18, 1975) Japanese Utility Model Publication No. 62-154053 (Sept. 30, 1987) Korean Published Utility Model Publication No. 20-1998-0064917 (Nov. 25, 1998) Japanese Published Patent Publication No. JP 2007-045532 (Feb. 22, 2007) Korean Published Patent Publication No. 10-2012-0040982 (April 30, 2012) Korean Published Patent Publication No. 10-2020-0114080 (Oct. 7, 2020) Korean Published Patent Publication No. 10-2020-0122005 (Oct. 27, 2020) The problem to be solved

[0008] Therefore, the present invention has been devised to solve the aforementioned conventional problems, and

[0009] The present invention aims to provide a weight measuring system for a pickup crane that can smoothly measure the weight of a transported object according to the load of the drum and rope.

[0010] In addition, the present invention has another objective of providing a weight measuring system for a pickup crane that can accurately verify whether a transported object has been settled. means of solving the problem

[0011] The weight measuring system of the pickup crane of the present invention for achieving the above objective is,

[0012] The crane body is characterized by comprising: a drum (10) formed to wind or unwind a rope (30) on one side of the upper part of the crane body; a driving means (20) for rotating the drum (10) in the forward or reverse direction; a tube (40) formed to grip a transport object (A) by installing it on the lower part of the rope (30); a weight measuring means (50) formed on one side of the drum (10); a plurality of rotating bodies (110) formed to allow the rope (30) to circulate by being located at the front and rear of the drum (10); a load measuring means (120) formed to measure the load of the rotating bodies (110) which varies according to the weight of the transport object (A) at the center or one side of the rotating bodies (110); and a control unit (130) formed to measure the weight of the transport object (A) and operate or stop the driving means (20) using data from the weight measuring means (50) and the load measuring means (120).

[0013] Here, the control unit (130) is characterized by including: a calculation processing unit for converting the data of the weight measuring means (50) and the load measuring means (120) generated during the process of the container (40) gripping and lifting the transported object (A) and the data of the weight measuring means (50) and the load measuring means (120) generated during the process of placing the transported object (A) on the table (B) into weight units; and a display operation unit formed to display the weight processed through the calculation processing unit and allow the operator to operate it.

[0014] In particular, the above-mentioned processing unit is characterized by calculating the average value of the data measured through the weight measuring means (50) and the load measuring means (120) as the weight of the transported object (A).

[0015] Meanwhile, it is characterized by including a direction maintaining unit (140) formed to maintain the direction of the rotating body (110) according to the moving position of the rope (30).

[0016] At this time, the direction maintaining unit (140) is characterized by comprising: a body (141) located on both sides of the rotating body (110); a rotating part (142) formed on the inner side or one side of the body (141); a rotating body (143) connected to the center of the rotating body (110) and formed to rotate left and right relative to the rotating part (142); and an elastic body (144) formed between the body (141) and the rotating body (143) to always maintain the rotating body (110) in its initial position and direction. Effects of the invention

[0017] The present invention has the effect of improving the work efficiency of a pickup crane by measuring the weight of the transported object uniformly without bias.

[0018] In addition, the present invention has the effect of ensuring reliability by measuring the weight of a transported object in a dual manner, so that even if one measuring means fails or malfunctions, the other measuring means compensates for it.

[0019] In particular, the present invention has the effect of minimizing operational delays and safety accidents by preventing excessive loosening and displacement of the rope that occurs during the process of placing a transported object on a table.

[0020] In addition, the present invention has a simple structure and is easy to maintain, which can increase usage efficiency and range of application. Brief explanation of the drawing

[0021] FIG. 1 is a front view illustrating an example of a weight measuring system for a conventional pickup crane. FIG. 2 is a reference diagram of the usage state to show an example of a weight measuring system for a conventional pickup crane. FIG. 3 is a front view illustrating an embodiment of the weight measuring system of the pickup crane of the present invention. FIG. 4 is a plan view illustrating an embodiment of the weight measuring system of the pickup crane of the present invention. FIG. 5 is a plan view illustrating another embodiment of the weight measuring system of the pickup crane of the present invention. Specific details for implementing the invention

[0022] As mentioned above, the configuration of the present invention will be explained in detail with reference to the attached drawings as follows.

[0023] FIG. 3 is a front view illustrating an embodiment of the weight measuring system of the pickup crane of the present invention, FIG. 4 is a plan view illustrating an embodiment of the weight measuring system of the pickup crane of the present invention, and FIG. 5 is a plan view illustrating another embodiment of the weight measuring system of the pickup crane of the present invention.

[0024] The present invention comprises: a drum (10) formed on one side of the upper part of a crane body to wind or unwind a rope (30); a driving means (20) for rotating the drum (10) in the forward or reverse direction; a tube (40) formed to be installed on the lower part of the rope (30) to grip a transport object (A); a weight measuring means (50) formed on one side of the drum (10); a plurality of rotating bodies (110) formed to be located at the front and rear of the drum (10) to allow the rope (30) to circulate; a load measuring means (120) formed at the center or one side of the rotating bodies (110) to measure the load of the rotating bodies (110) which varies according to the weight of the transport object (A); and a control unit (130) formed to measure the weight of the transport object (A) and to operate or stop the driving means (20) using data from the weight measuring means (50) and the load measuring means (120).

[0025] In particular, the drum (10) is located on one side of the upper part of the crane body and rotates by the operation of the driving means (20) to wind or unwind the rope (30), thereby enabling the barrel (40) to perform lifting and lowering movements.

[0026] At this time, bearings having various specifications and shapes are formed on both sides of the drum (10) to ensure smooth rotational force.

[0027] Meanwhile, the driving means (20) can control the rotation direction and rotation speed of the drum (10) using a motor and a reduction gear, etc.

[0028] In the present invention, the container (30) is operated to pick up or lower a heavy transport object (A), such as a slab, and since the configuration and operating principle thereof are devices commonly used in the industry, a detailed description is omitted.

[0029] In addition, the weight measuring means (50) may use various sensors, such as a load cell, to measure the amount of displacement applied to the drum (10) according to the weight of the transported object (A).

[0030] At this time, the weight measuring means (50) is located at the bottom of a bearing installed to support both sides of the drum (10) and allow it to rotate.

[0031] In the present invention, the rotating body (110) performs the role of inducing the rope (30), which is wound or unwound by the rotation of the drum (10), to circulate, thereby enabling the measurement of the load of the rope (30) which varies according to the weight of the transported object (A).

[0032] Here, the rotating body (110) can be formed to have various shapes and specifications, such as a pulley.

[0033] In particular, as shown in FIG. 4, the rotating body (110) is formed at a certain distance from the front and rear of the drum (10) so that the weight of the transported object (A) can be measured uniformly without bias when viewed in a planar state, and the rope (30) can stably support the container (40) and measure the weight while maintaining a horizontal state.

[0034] In addition, the load measuring means (120) performs the role of measuring the load of the rotating body (110) applied in a downward direction according to the weight of the transported object (A).

[0035] Here, the load measuring means (120) can use various types of sensors, such as load cells or strain gauges, to measure the amount of load displacement that varies according to the weight of the transported object (A).

[0036] In addition, the control unit (130) can uniformly measure the weight of the transport (A) using data from the weight measuring means (50) and the load measuring means (120), and can operate or stop the driving means (20) according to the weight of the transport (A) that changes during the process of placing the transport (A) on the table (B), thereby preventing safety accidents such as excessive unwinding and displacement of the rope (30) in advance.

[0037] In particular, the control unit (130) includes: a calculation processing unit for converting the data of the weight measuring means (50) and load measuring means (120) generated during the process of the container (40) gripping and lifting the transported object (A), and the data of the weight measuring means (50) and load measuring means (120) generated during the process of placing the transported object (A) on the table (B) into weight units; and a display operation unit formed to display the weight processed through the calculation processing unit and allow an operator to operate it.

[0038] Meanwhile, the above-mentioned processing unit calculates and stores the average value of the data measured through the weight measuring means (50) and the load measuring means (120) as the weight of the transported object (A), and allows workers and managers to freely access the cloud server from a remote location to check or utilize the stored data.

[0039] At this time, the above-mentioned computational processing unit can be implemented by hardware, firmware, software, or a combination thereof.

[0040] In addition, the above processing unit may use various wireless communication methods such as mobile communication (3G, LTE, 5G, etc.), Wi-Fi, Bluetooth, Beacon, Zigbee, etc. to transmit and receive data from the weight measuring means (50) and the load measuring means (120).

[0041] In addition, the above display operation unit can check and operate the data of the weight measuring means (50) and load measuring means (120) in the operator's room or in the driver's room, and can apply an HMI-based touch panel.

[0042] In addition, the weight of the transported object (A) displayed on the above-mentioned display control unit can be stored and utilized by a recording means such as a USB memory, external hard disk, or portable storage drive.

[0043] In the present invention, during the process of placing a transport object (A) on a table (B) or lifting it, a direction maintaining unit (140) is included to rotate and maintain the direction of the rotating body (110) according to the movement position (direction) of the rope (30), thereby minimizing the deviation of the rope (30) from its position.

[0044] Here, the direction maintaining unit (140) comprises: a body (141) located on both sides of the rotating body (110) as shown in FIG. 5; a rotating part (142) formed on the inner side or one side of the body (141); a rotating body (143) connected to the center of the rotating body (110) and formed to rotate left and right relative to the rotating part (142); and an elastic body (144) formed between the body (141) and the rotating body (143) to always maintain the rotating body (110) in its initial position and direction.

[0045] In particular, the rotating body (143) can rotate left and right around the pivot part (142) when the direction changes as the rope (30) is unwound or wound.

[0046] At this time, the above-mentioned rotating part (142) can smoothly rotate the above-mentioned rotating body (143) in the left and right directions by including a pin or shaft and a bearing, etc.

[0047] In addition, the elastic body (144) uses springs of various shapes and specifications to secure elastic restoring force so that the rotating body (143) and the rotating body (110) can rotate according to the direction of the rope (30) and return to the initial position.

[0048] Although the embodiments of the present invention have been described in detail as above, the scope of the present invention is not limited thereto, and it is obvious that the scope of the present invention includes those that are substantially equivalent to the embodiments of the present invention. Explanation of the symbols

[0049] 10: Drum 20: Driving means 30: Rope 40: Container 50: Weight measuring means 110: Multiple rotating bodies 120: Load measuring means 130: Control unit 140: Direction maintaining unit 141: Body 142: Gathering part 143: Rotating body 144: Elastic body A: Transport

Claims

Claim 1 A drum (10) formed on one side of the upper part of the crane body to wind or unwind a rope (30); a driving means (20) for rotating the drum (10) in the forward or reverse direction; a tube (40) formed to be installed on the lower part of the rope (30) to grip a transport object (A); a weight measuring means (50) formed on one side of the drum (10); a plurality of rotating bodies (110) positioned at the front and rear of the drum (10) to allow the rope (30) to circulate; and a load measuring means (120) formed at the center or one side of the rotating bodies (110) to measure the load of the rotating bodies (110) which varies according to the weight of the transport object (A). A control unit (130) formed to measure the weight of a transport (A) and to operate or stop the driving means (20) using data from the weight measuring means (50) and the load measuring means (120); wherein the weight measuring means (50) is located at the bottom of a bearing installed to support both sides of the drum (10) and to rotate, and measures the amount of displacement applied to the drum (10) according to the weight of the transport (A); and the control unit (130) includes a calculation processing unit for converting the data from the weight measuring means (50) and the load measuring means (120) generated during the process of the container (40) gripping and lifting the transport (A), and the data from the weight measuring means (50) and the load measuring means (120) generated during the process of placing the transport (A) on the table (B) into weight units. The device includes a display operation unit configured to display the weight processed through the above-mentioned processing unit and to allow an operator to operate it; wherein the above-mentioned processing unit calculates the average value of the data measured through the weight measuring means (50) and the load measuring means (120) as the weight of the transported object (A), and includes a direction maintaining unit (140) configured to maintain the direction of the rotating body (110) according to the movement position of the rope (30); and wherein the direction maintaining unit (140) comprises a body (141) located on both sides of the rotating body (110);A weight measuring system for a pickup crane characterized by comprising: a pivot part (142) formed on the inner side or one side of the body (141); a rotating body (143) formed to be connected to the center of the rotating body (110) so as to be able to rotate left and right relative to the pivot part (142); and an elastic body (144) formed between the body (141) and the rotating body (143) so as to always maintain the rotating body (110) in its initial position and direction. Claim 2 delete Claim 3 delete Claim 4 delete Claim 5 delete

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