Crane anti-reversal device, crane, gantry frame and electroplating production line

Abstract

The present invention relates to the field of motor control technology, and in particular to a crane anti-reversal device, a crane, a gantry frame and an electroplating production line. The crane anti-reversal device comprises a bracket, a travel switch and a control unit. The bracket is arranged on the frame. The travel switch comprises a switch body and a ball, the switch body is mounted on the bracket, and the ball can be pressed against the sling. When the motor reverses during rotation, the sling and the ball are separated from the pressure and the travel switch is triggered to generate an electrical signal. When the control unit receives the electrical signal, it controls the motor to stop to prevent the motor from reversing and ensure the smooth progress of the electroplating operation. At the same time, it can prevent the workpiece from falling freely, effectively protect the workpiece, and improve the safety of the workpiece and the electroplating operation.

Description

Technical Field

[0001] The invention belongs to the technical field of motor control, and in particular relates to a crane anti-reversal device, a crane, a gantry-type frame and an electroplating production line. Background Art

[0002] In the electroplating production line, the crane moves along the production line and places the hoisted workpieces into the aqueduct one by one to complete the electroplating operation.

[0003] like Figure 1 and Figure 2 As shown, the first rotating shaft 20, the output shaft 10 of the motor, the second rotating shaft 30 and the sling 40 are arranged on the frame 100 of the traveling vehicle at intervals. Among them, one end of a sling 40 is wound around the output shaft 10 of the motor, and the other end is extended vertically downward after bypassing the first rotating shaft 20, and a workpiece is suspended. One end of another sling 40 is wound around the output shaft 10 of the motor, and the other end is extended vertically downward after bypassing the second rotating shaft 30, and a workpiece is suspended. Since the tangent points of the two slings 40 around the output shaft 10 are symmetrical about the axis of the output shaft 10, as shown in FIG. Figure 2 As shown, when the output shaft 10 of the motor rotates counterclockwise, the two slings 40 are unwound at the same time, and the workpiece descends; when the output shaft 10 of the motor rotates clockwise, the two slings 40 are reeled in at the same time, and the workpiece ascends.

[0004] When an abnormal situation occurs during the rotation of the motor, such as the rotor and stator of the motor are worn, or the bearings are worn, the gap is too large, etc., the motor will suddenly reverse. Reversal here refers to rotation opposite to the normal rotation direction of the normal motor. For example, when the output shaft 20 of the motor rotates counterclockwise, the sling 40 is unwound, and the workpiece is lowered, the output shaft 20 of the motor suddenly rotates clockwise, that is, the motor reverses. Similarly, when the normal rotation direction of the motor is clockwise, the output shaft 20 of the motor suddenly rotates clockwise, that is, the motor reverses. When the motor reverses, the sling 40 between the first rotating shaft 20 and the output shaft 10 and between the output shaft 10 and the second rotating shaft 30 will be instantly loosened or deformed, affecting the normal electroplating operation. When the sling 40 is unwinding, the reversal time is too long, and it may even cause the workpiece to fall, causing the workpiece to be scrapped. Summary of the invention

[0005] The first purpose of the present invention is to provide a crane anti-reversal device to prevent the motor on the crane from reversing and ensure the smooth progress of electroplating operations.

[0006] The second purpose of the present invention is to provide a crane to prevent the motor on the crane from reversing and ensure the smooth progress of the electroplating operation.

[0007] The third object of the present invention is to provide a gantry type frame to prevent the motor on the crane from reversing and ensure the smooth progress of the electroplating operation.

[0008] The fourth purpose of the present invention is to provide an electroplating production line to prevent the motor on the crane from reversing and ensure the smooth progress of the electroplating operation.

[0009] To achieve this purpose, the technical solution adopted by the present invention is:

[0010] A vehicle anti-reversal device is installed on a vehicle frame, a motor is provided on the vehicle frame, an output shaft of the motor is connected to a sling transmission, the sling is used to hoist a workpiece, and the vehicle anti-reversal device comprises:

[0011] A bracket, arranged on the frame;

[0012] A travel switch, the travel switch comprising a switch body and a ball, the switch body being mounted on the bracket, the ball being able to press against the sling, the travel switch being configured such that when the motor is reversed during rotation, the sling is disengaged from the pressing of the ball and the travel switch is triggered to generate an electrical signal;

[0013] The control unit is configured to receive the electrical signal and control the motor to stop.

[0014] Furthermore, the travel switch is an adjustable ball rocker type travel switch.

[0015] Furthermore, the vehicle anti-reversal device also includes an alarm, which is arranged on the bracket and is configured to emit an audible and visual alarm when the motor stops.

[0016] Furthermore, the bracket includes a base and a vertical plate, the vertical plate is arranged on the base, a strip hole extending in a vertical direction is opened on the vertical plate, and the switch body is fixedly installed in the strip hole by bolts.

[0017] Furthermore, the position of the base on the frame is adjustable.

[0018] Furthermore, the bracket also includes a magnet, which is arranged at the bottom end of the base, and the base is adsorbed on the frame through the magnet.

[0019] Furthermore, the width of the ball is equal to the width of the sling.

[0020] A vehicle comprises a frame and the above-mentioned vehicle anti-reversal device.

[0021] A gantry-type frame comprises the above-mentioned crane.

[0022] An electroplating production line comprises the above-mentioned gantry-type frame.

[0023] The beneficial effects of the present invention are:

[0024] The anti-reversal device for a crane proposed in the present invention comprises a bracket, a travel switch and a control unit. The travel switch is installed on the frame of the crane through the bracket, and the ball of the travel switch is pressed against the sling on which the workpiece is suspended. When the motor reverses during rotation, the sling and the ball are separated from the pressing, and the travel switch is triggered to transmit an electrical signal to the control unit, so that the control unit controls the motor to stop, avoids the motor from reversing, and ensures the smooth progress of the electroplating operation. At the same time, it can prevent the workpiece from falling freely, effectively protect the workpiece, and improve the safety of the workpiece and the electroplating operation.

[0025] The crane proposed by the present invention includes a crane and the above-mentioned crane anti-reversal device. The ball of the travel switch is pressed against the sling on which the workpiece is suspended. When the motor reverses during rotation, the sling and the ball are separated from the pressing, and the travel switch is triggered to transmit an electrical signal to the control unit, so that the control unit controls the motor to stop, avoids the motor from reversing, and ensures the smooth progress of the electroplating operation. At the same time, it can prevent the workpiece from falling freely, effectively protect the workpiece and the crane, and improve the safety of the electroplating operation.

[0026] The gantry frame proposed by the present invention includes the above-mentioned crane. When the motor reverses during rotation, the sling and the ball are separated from the pressing, and the travel switch is triggered to transmit an electrical signal to the control unit, so that the control unit controls the motor to stop, avoids the motor from reversing, and ensures the smooth progress of the electroplating operation. At the same time, it can prevent the workpiece from falling freely, effectively protect the workpiece and the gantry frame, and improve the safety of the electroplating operation.

[0027] The present invention proposes an electroplating production line, in which the ball of the travel switch is pressed against the sling on which the workpiece is suspended. When the motor reverses during rotation, the sling and the ball are separated from the pressing, and the travel switch is triggered to transmit an electrical signal to the control unit, so that the control unit controls the motor to stop, avoids the motor from reversing, and ensures the smooth progress of the electroplating operation. At the same time, it can prevent the workpiece from falling freely, effectively protect the workpiece and the electroplating production line, and improve the safety of the electroplating operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a partial top view of an existing vehicle provided by an embodiment of the present invention;

[0029] Figure 2 It is a partial end view of a vehicle provided with a vehicle anti-reversal device provided by an embodiment of the present invention;

[0030] Figure 3 It is a schematic diagram of the structure of the vehicle anti-reversal device provided in an embodiment of the present invention.

[0031] The names and numbers of the components in the figure are as follows:

[0032] 100, frame; 10, output shaft; 20, first rotating shaft; 30, second rotating shaft; 40, sling;

[0033] 1. Bracket; 11. Base; 12. Vertical plate; 121. Bar hole; 2. Travel switch; 21. Switch body; 22. Rocker; 23. Ball bearing; 3. Alarm; 4. Magnet. DETAILED DESCRIPTION

[0034] In order to make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved clearer, the technical solutions of the present invention are further described below in conjunction with the accompanying drawings and through specific implementation methods. It is understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for the convenience of description, only the parts related to the present invention are shown in the accompanying drawings, not all.

[0035] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0037] In the description of this embodiment, the terms "upper", "lower", "right", etc., directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0038] The technical solution of the present invention is further described below with reference to the accompanying drawings and through specific implementation methods.

[0039] This embodiment discloses an electroplating production line, which includes a plurality of gantry racks arranged in sequence according to the electroplating process sequence. The workpiece passes through the plurality of gantry racks in sequence to complete the electroplating operation.

[0040] Specifically, the gantry frame includes a frame, a crane, a plating tank and other electroplating equipment. The frame includes a vertical beam and a top beam. The two vertical beams are arranged opposite to each other, and the two ends of the top beam are respectively connected to the top ends of the two vertical beams to form the frame. The crane, plating tank and other equipment are arranged in the frame.

[0041] like Figure 2 As shown, the horizontal heights of the axes of the first rotating shaft 20 and the second rotating shaft 30 on the frame 100 of the vehicle of this embodiment are equal, and the height of the axis of the output shaft 10 of the motor is greater than the axis of the first rotating shaft 20 and the second rotating shaft 30, so that the output shaft 10 of the motor can reel in or unreel the sling 40. When the output shaft 10 of the motor rotates counterclockwise, the two slings 40 are unreeled at the same time, and the workpiece descends. When the output shaft 10 of the motor rotates clockwise, the two slings 40 are reeled in at the same time, and the workpiece ascends. The above counterclockwise direction is Figure 2 Direction indicated by the arrow.

[0042] When the motor is rotating, if an abnormal situation occurs, the motor will suddenly reverse, and the sling 40 will become loose or deformed, and may even cause the workpiece to fall, affecting the normal electroplating operation.

[0043] To solve the above problems, the present embodiment further discloses a vehicle anti-reversal device, which is installed on the vehicle frame 100 and can control the motor to stop when the output shaft 10 of the motor reverses to protect the safety of the motor and the workpiece.

[0044] like Figure 2 and Figure 3As shown, the anti-reversal device for driving includes a bracket 1, a travel switch 2 and a control unit. The bracket 1 is arranged on the frame 100. The travel switch 2 includes a switch body 21 and a ball 23. The switch body 21 is installed on the bracket 1, and the ball 23 can be pressed against the sling 40. When the motor reverses during rotation, the sling 40 and the ball 23 are separated from the pressing, and the travel switch 2 is triggered to generate an electrical signal. When the control unit receives the electrical signal, it controls the motor to stop to prevent the motor from reversing and ensure the smooth progress of the electroplating operation. At the same time, it can prevent the workpiece from falling freely, effectively protect the workpiece, and improve the safety of the workpiece and the electroplating operation.

[0045] The control unit of this embodiment can be installed on the bracket 1 in the anti-reversal device of the traveling vehicle and electrically connected to the motor to control the motor to stop. Alternatively, the control unit on the traveling vehicle can be shared to simplify the structure of the anti-reversal device of the traveling vehicle and reduce the cost. Specifically, the control unit can be a control cabinet on the traveling vehicle.

[0046] In this embodiment, each sling 40 is correspondingly installed with a driving anti-reversal device, so that the ball 23 of each travel switch 2 is pressed against the corresponding sling 40. In this embodiment, two slings 40 are simultaneously wound around the output shaft 10 of the same motor. Therefore, when the output shaft 10 of the motor reverses, the two slings 40 can be deformed or loosened, and the corresponding ball 23 is separated from the pressure to trigger the two travel switches 2, thereby improving the sensitivity of the travel switch 2 being triggered, realizing the redundant configuration of the driving anti-reversal device, and further improving the driving safety.

[0047] Preferably, the travel switch 2 of this embodiment is an adjustable ball-bearing rocker travel switch, which includes a switch body 21, a rocker 22 and a ball 23, wherein the rocker 22 is rotatably disposed on the switch body 21, and the ball 23 is rotatably disposed at the end of the rocker 22. Since the inclination angle of the rocker 22 and the length extending from the switch body 21 are adjustable, the ball 23 can be flexibly installed, thereby improving the versatility of the travel switch 2. Since the travel switch 2 is a mature product, a person skilled in the art can directly obtain it by purchasing it from outside, and its specific structure and working principle will not be described in detail.

[0048] In addition, since the size of the ball 23 of the travel switch 2 purchased from outside is small, especially the axial width of the ball 23 is short. When the ball 23 is pressed against the sling 40 for a long time, stress concentration is likely to occur at the pressing position of the sling 40, causing the sling 40 to wear and deform, shortening the service life of the sling 40, and affecting the sensitivity of the travel switch 2. Therefore, in this embodiment, the axial width of the ball 23 is increased to be equal to the width of the sling 40, so as to increase the pressing position of the sling 40, so that the sling 40 is evenly stressed, and stress concentration is avoided, which is conducive to reducing the wear and deformation of the sling 40.

[0049] like Figure 2 As shown, one of the slings 40 is wound around the output shaft 10 from the top of the output shaft 10 and around the first rotating shaft 20, so that the sling 40 between the output shaft 10 and the first rotating shaft 20 is set downwardly in an inclined manner. The other sling 40 is wound around the output shaft 10 from the bottom point of the output shaft 10 and around the second rotating shaft 30, so that the sling 40 between the output shaft 10 and the second rotating shaft 30 is basically set horizontally.

[0050] It should be noted that in order to avoid the interference of the ball 23 with the sling 40 on the first rotating shaft 20 and change the normal running track of the sling 40. Therefore, the ball 23 of the travel switch 2 close to the first rotating shaft 20 is located below the sling 40. When the motor is reversed, the sling 40 on the first rotating shaft 20 and the corresponding ball 23 are loosened to trigger the corresponding travel switch 2. The sling 40 on the second rotating shaft 30 is basically in a horizontal state, and the ball 23 of the travel switch 2 close to the second rotating shaft 30 is located above the corresponding sling 40. When the motor is reversed, the sling 40 on the second rotating shaft 30 and the corresponding ball 23 are disengaged from the pressure to trigger the corresponding travel switch 2. Therefore, the triggering methods of the two travel switches 2 are different.

[0051] like Figure 3 As shown, the bracket 1 includes a base 11 and a vertical plate 12. The vertical plate 12 is arranged on the base 11. A strip hole 121 extending in the vertical direction is opened on the vertical plate 12. The switch body 21 is fixedly installed in the strip hole 121 by bolts, thereby realizing the height adjustment of the travel switch 2 so that the ball 23 can maintain a pressed state with the corresponding sling 40, realizing the flexible installation of the travel switch 2, which is beneficial to improving the versatility of the travel switch 2.

[0052] The position of the base 11 on the frame 100 of this embodiment is adjustable. By adjusting the position of the base 11 on the frame 100, the anti-reversal device can be adaptively adjusted according to the layout structure of the frame 100 to avoid interference with other structures on the frame 100.

[0053] Specifically, the bracket 1 further includes a magnet 4, which is disposed at the bottom end of the base 11, and the base 11 is adsorbed on the frame 100 through the magnet 4. The installation by magnetic attraction improves the installation efficiency of the bracket 1, saves the connection structure between the bracket 1 and the frame 100, and reduces the installation cost of the anti-reversal device. In addition, the base 11 is adsorbed on the frame 100 through the magnet 4, which facilitates the disassembly and assembly and position adjustment of the base 11, and is easy to operate.

[0054] The magnet 4 of this embodiment is a permanent magnet, specifically a magnet or an artificial magnetic steel, which is cheap and easy to obtain. The number, structure and adsorption force of the magnet 4 can be adaptively adjusted according to the installation requirements of the bracket 1, and are not specifically limited here.

[0055] Preferably, the anti-reversal device for driving further includes an alarm 3, which is arranged on the bracket 1. When the motor stops, the alarm 3 emits an audible and visual alarm. Specifically, the alarm 3 is electrically connected or communicatively connected to the travel switch 2. When the travel switch 2 is triggered, the motor stops, and the alarm 3 emits an audible and visual alarm at the same time to remind the operator to troubleshoot the fault, thereby improving the safety of driving.

[0056] The above embodiments are only to illustrate the basic principles and characteristics of the present invention. The present invention is not limited by the above embodiments. Without departing from the spirit and scope of the present invention, the present invention may be subject to various changes and modifications, which are within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A vehicle anti-reversal device, installed on a vehicle frame (100), wherein a motor is provided on the vehicle frame (100), wherein an output shaft (10) of the motor is in transmission connection with a sling (40), wherein the sling (40) is used for hoisting a workpiece, and wherein: The driving anti-reversal device comprises: A bracket (1) is arranged on the vehicle frame (100); A travel switch (2), the travel switch (2) comprising a switch body (21) and a ball (23), the switch body (21) being mounted on the bracket (1), the ball (23) being able to press against the sling (40), the travel switch (2) being configured such that when the motor reverses during rotation, the sling (40) and the ball (23) are separated from the pressing, and the travel switch (2) is triggered to generate an electrical signal; A control unit, configured to receive the electrical signal and control the motor to stop; The travel switch (2) is an adjustable ball-roller rocker type travel switch, and the travel switch (2) further comprises a rocker (22), wherein the rocker (22) is rotatably arranged on the switch body (21), and the ball (23) is rotatably arranged at the end of the rocker (22).

2. The vehicle anti-reversal device according to claim 1, characterized in that: The vehicle anti-reversal device further comprises an alarm (3), wherein the alarm (3) is arranged on the bracket (1) and is configured to emit an audible and visual alarm when the motor stops.

3. The vehicle anti-reversal device according to claim 1, characterized in that: The bracket (1) comprises a base (11) and a vertical plate (12); the vertical plate (12) is arranged on the base (11); a strip hole (121) extending in a vertical direction is provided on the vertical plate (12); the switch body (21) is fixedly installed in the strip hole (121) by means of bolts.

4. The vehicle anti-reversal device according to claim 3, characterized in that: The position of the base (11) on the vehicle frame (100) is adjustable.

5. The vehicle anti-reversal device according to claim 4, characterized in that: The bracket (1) further comprises a magnet (4), wherein the magnet (4) is arranged at the bottom end of the base (11), and the base (11) is adsorbed on the vehicle frame (100) via the magnet (4).

6. The vehicle anti-reversal device according to claim 1, characterized in that: The width of the ball (23) is equal to the width of the sling (40).

7. A driving vehicle, characterized in that: The vehicle comprises a frame and the vehicle anti-reversal device according to any one of claims 1 to 6.

8. A gantry type frame, characterized in that: Including the driving method described in claim 7.

9. An electroplating production line, characterized in that: Including the gantry frame described in claim 8.

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