Steel plate thickness detection device for steel plate lifting appliance

Abstract

The utility model discloses a steel plate thickness detection device for a steel plate lifting appliance, which comprises a driving mechanism, two groups of screw rod lifting mechanisms are connected onto the driving mechanism, and an encoder detection mechanism is connected onto each group of screw rod lifting mechanism. When the thickness of the steel plate is detected, as the first driven gear and the second driven gear are meshed and the transmission directions are opposite, the detection rods of the two groups of screw rod lifting mechanisms are driven to move in opposite directions. When the thickness of the steel plate is measured, one detection rod is moved to the upper part of the steel plate, the other detection rod is moved to the lower part of the steel plate, the readings of the two encoders are read, the height positions of the two detection rods are determined, the height difference is the thickness data of the steel plate, the thickness of the steel plate is effectively detected, and the detection accuracy is improved.

Description

Technical Field

[0001] The utility model relates to the field of detection equipment, in particular to a steel plate thickness detection device for a steel plate lifting sling. Background Art

[0002] With the development of industrial automation, various electric steel plate lifting slings are used in the field of steel plate lifting and handling. The widespread use of these slings has improved the automation level and efficiency of steel plate lifting and handling operations, and compared with the traditional old-fashioned mechanical slings and manual assisted lifting operations, the safety of lifting is also guaranteed.

[0003] After lifting the steel plate, the steel plate lifting sling needs to test the basic parameters of the steel plate, such as the weight, width, thickness, etc. When testing the thickness of the steel plate, since the maximum length of the steel plate lifted by the sling at a time can reach 12m, the steel plate may sink at both ends after lifting and arch in the middle, making it impossible to accurately test the thickness of the arched steel plate, affecting its use. Utility Model Content

[0004] The utility model provides a steel plate thickness detection device for a steel plate lifting sling, aiming to solve the problem that the existing lifting equipment cannot effectively and accurately detect the thickness of the arched steel plate.

[0005] To achieve its purpose, the utility model adopts the following technical solutions:

[0006] A steel plate thickness detection device for a steel plate lifting hanger comprises a driving mechanism, wherein two groups of screw rod lifting mechanisms are connected to the driving mechanism, and each group of screw rod lifting mechanisms is connected to an encoder detection mechanism.

[0007] Preferably, the driving mechanism comprises a motor reducer, the output shaft of the motor reducer is connected with a driving gear, the driving gear is meshed with a first passive gear, and the first passive gear is meshed with a second passive gear.

[0008] Preferably, the two groups of screw lifting mechanisms have the same structure and are respectively connected to the first passive gear and the second passive gear.

[0009] Preferably, the screw lifting mechanism includes a screw shaft arranged on the first passive gear, a screw nut is provided on the screw shaft, and a detection rod is vertically connected to one side of the screw nut; friction disks are respectively provided on the friction surfaces of the top and bottom of the first passive gear, a vertical spring is provided on the top friction disk, and a clamping disk is provided on the top of the spring.

[0010] Preferably, the encoder detection mechanism comprises an encoder bracket, on which two encoders are arranged and couplings are arranged at the lower part of the encoders, and the two couplings are respectively connected to the screw shafts of the two sets of screw lifting mechanisms.

[0011] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0012] The steel plate lifting sling provided by the utility model has encoder detection mechanisms connected to the two sets of screw lifting mechanisms to detect the thickness of the steel plate. Since the first passive gear and the second passive gear are meshed, the transmission directions are opposite, thereby driving the detection rods of the two sets of screw lifting mechanisms to move in opposite directions. When measuring the thickness of the steel plate, one detection rod moves to the upper part of the steel plate, and the other detection rod moves to the lower part of the steel plate, and then the readings of the two encoders are read to determine the height positions of the two detection rods, and the height difference is the steel plate thickness data. The use of the steel plate thickness detection device of the present application ensures that the steel plate lifting sling can better adapt to the thickness detection work of the arched steel plate when lifting the long and wide steel plates. Regardless of the curvature of the arch of the long and wide steel plates or the height position, the thickness of the steel plates can be effectively detected, thereby improving the accuracy of the detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the structure of a steel plate thickness detection device of the utility model;

[0014] Figure 2 This is a schematic diagram of the structure of the screw rod lifting mechanism of the utility model;

[0015] In the figure: 1-driving mechanism; 1.1-motor reducer; 1.2-driving gear; 1.3-first passive gear; 1.4-second passive gear; 2-screw lifting mechanism; 2.1-pressure plate; 2.2-screw shaft; 2.3-spring; 2.4-friction plate; 2.5-screw nut; 2.6-detection rod; 3-encoder detection mechanism; 3.1-encoder bracket; 3.2-encoder; 3.3 coupling. DETAILED DESCRIPTION

[0016] The utility model is further described below in conjunction with the accompanying drawings:

[0017] like Figure 1-2 As shown, the utility model is a steel plate thickness detection device for a steel plate lifting hanger, comprising a driving mechanism 1, to which two sets of screw lifting mechanisms 2 are connected, and each set of screw lifting mechanisms 2 is connected to an encoder detection mechanism 3.

[0018] The driving mechanism 1 comprises a motor reducer 1.1, the output shaft of which is connected to a driving gear 1.2, the driving gear 1.2 is meshed with a first passive gear 1.3, and the first passive gear 1.3 is meshed with a second passive gear 1.4.

[0019] The two groups of screw lifting mechanisms 2 have the same structure and are connected to the first passive gear 1.3 and the second passive gear 1.4 respectively. Specifically, the screw lifting mechanism 2 includes a screw shaft 2.2 arranged on the first passive gear 1.3, a screw nut 2.5 is arranged on the screw shaft 2.2, and a detection rod 2.6 is vertically connected to one side of the screw nut 2.5; friction discs 2.4 are arranged on the friction surfaces of the top and bottom of the first passive gear 1.3 respectively, and a vertical spring 2.3 is arranged on the top friction disc 2.4, and a clamping disc 2.1 is arranged on the top of the spring 2.3. When in use, the spring 2.3 is pressed downward by the clamping disc 2.1 to provide a clamping force to the friction disc 2.4, so that it rotates with the first passive gear 1.3 or the second passive gear 1.4, thereby driving the screw shaft 2.2 to rotate. The first passive gear 1.3 or the second passive gear 1.4 respectively drives their respective screw lifting mechanisms 2 to move, and as the screw shaft 2.2 rotates, the screw nut 2.5 and the detection rod 2.6 are driven to move up and down. When the detection rod 2.6 on one screw lifting mechanism 2 moves upward, the detection rod 2.6 on the other screw lifting mechanism 2 moves downward.

[0020] When measuring the thickness of a steel plate, first move one detection rod 2.6 to the upper part of the steel plate, and the other detection rod 2.6 to the lower part of the steel plate. When the detection rod 2.6 encounters an obstacle such as a steel plate and cannot continue to move, slippage occurs between the friction plate 2.4 and the first passive gear 1.3 or the second passive gear 1.4. At this time, the screw shaft 2.2 stops rotating while the motor reducer 1.1 continues to output torque, and the first passive gear 1.3 and the second passive gear 1.4 continue to rotate.

[0021] The encoder detection mechanism 3 comprises an encoder bracket 3.1, on which two encoders 3.2 are arranged and couplings 3.3 are arranged under the encoders 3.2. The two couplings 3.3 are connected to the screw shafts 2.2 of the two sets of screw lifting mechanisms 2 respectively.

[0022] When the thickness of the steel plate needs to be detected, the driving mechanism 1 provides power, and the motor reducer 1.1 is powered to drive the driving gear 1.2 to rotate, and the driving gear 1.2 drives the first passive gear 1.3 to rotate, and the first passive gear 1.3 then drives the second passive gear 1.4 to rotate. Since the first passive gear 1.3 is meshed with the second passive gear 1.4, the two rotate synchronously, and the rotation directions of the two gears are always opposite.

[0023] When the steel plate hoist lifts the steel plate, the steel plate bends into an arch shape. At this time, the motor reducer 1.1 is driven, so that the detection rod 2.6 located at the upper part of the steel plate moves downward, while the other detection rod 2.6 located at the lower part of the steel plate moves upward synchronously. In general, since the distances between the upper and lower detection rods and the steel plate are random and unequal. Therefore, when a detection rod 2.6 first contacts the steel plate, the other detection rod 2.6 is still in a non-contact state. At this time, the detection rod 2.6 that first contacts the steel plate encounters the obstruction of the steel plate, causing the friction disk 2.4 of the group of screw lifting mechanism 2 to slip, so that the detection rod 2.6 no longer continues to descend. At this time, the motor reducer 1.1 still outputs torque, the first passive gear 1.3 and the second passive gear 1.4 still rotate, and the other detection rod 2.6 that does not contact the steel plate does not slip, so it continues to move toward the steel plate. When the friction disks 2.4 of the two groups of screw lifting mechanisms 2 slip, it means that the two detection rods 2.6 have contacted the upper and lower surfaces of the steel plate. At this time, the readings of the two encoders 3.2 are read to determine the height positions of the two detection rods 2.6 respectively, and the height difference is the steel plate thickness data.

Claims

1. A steel plate thickness detection device for a steel plate lifting sling, characterized in that: It comprises a driving mechanism (1), wherein the driving mechanism (1) is connected to two sets of screw lifting mechanisms (2), and each set of screw lifting mechanisms (2) is connected to an encoder detection mechanism (3); The driving mechanism (1) comprises a motor reducer (1.1), the output shaft of the motor reducer (1.1) is connected to a driving gear (1.2), the driving gear (1.2) is meshed with a first passive gear (1.3), and the first passive gear (1.3) is meshed with a second passive gear (1.4); The two groups of the screw lifting mechanisms (2) have the same structure and are respectively connected to the first passive gear (1.3) and the second passive gear (1.4); the screw lifting mechanism (2) comprises a screw shaft (2.2) arranged on the first passive gear (1.3), a screw nut (2.5) being arranged on the screw shaft (2.2), and a detection rod (2.6) being vertically connected to one side of the screw nut (2.5); friction disks (2.4) are respectively arranged on the friction surfaces of the top and bottom of the first passive gear (1.3), a vertical spring (2.3) is arranged on the top friction disk (2.4), and a pressing disk (2.1) is arranged on the top of the spring (2.3); The encoder detection mechanism (3) comprises an encoder bracket (3.1), two encoders (3.2) are arranged on the encoder bracket (3.1), and couplings (3.3) are arranged at the bottom of the encoders (3.2), and the two couplings (3.3) are respectively connected to the screw shafts (2.2) of the two sets of screw lifting mechanisms (2).

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