Device for accurately controlling operation of winch

Abstract

The utility model provides a device for accurately controlling the operation of the winch. According to the device, a connecting end cover is fixedly installed at the end of a rotating wheel disc, a synchronous speed reducer is fixedly installed on the connecting end cover, an absolute value rotating encoder is fixedly installed at the tail of the synchronous speed reducer, a waterproof shell is sleeved outside the synchronous speed reducer, a power module is fixedly installed on a mounting frame, and the mounting frame is fixedly installed on a waterproof tail cover. The two ends of the waterproof shell are installed on the connecting end cover and the installation frame respectively, the waterproof cable connector is fixedly installed on the waterproof shell, the control cable is connected with the waterproof cable connector, and the rotating shaft of the rotating wheel disc is connected with the synchronous speed reducer. According to the device, after the rotating speed of the rotating wheel disc is synchronized through the synchronous speed reducer, the rotating wheel disc is counted through the absolute value rotating encoder, the position of the rotating wheel disc is confirmed by reading and comparing the numerical value of the absolute value rotating encoder, remote centralized control can be achieved, one control cabinet can control operation of multiple winches at the same time, design is reasonable, and operation is convenient. Operation is simple and convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of machinery and valves, in particular to a device for accurately controlling the operation of a winch. Background Art

[0002] The winch has reliable performance, convenient operation and wide application range. It is very convenient for lifting heavy objects, loading and unloading, repairing equipment and lifting goods. It is mainly used for hoisting, pulling, pushing and dragging heavy objects. Such as the installation and disassembly of various large and medium-sized concrete, steel structures and mechanical equipment. Its structural characteristics are orderly arrangement of wire ropes, reliable installation with hoisting, and suitable for road and bridge projects such as docks, bridges, ports and large-scale factory and mine installation equipment. Its working mode is to use the motor to drive the operation, and control it through electromagnetic brakes and locking brakes so that it cannot run freely without power. At the same time, after being driven and decelerated by the motor, it drives a wheel to operate, and the wheel is wound with steel cables or other ropes. It is an essential machine to improve labor efficiency and improve labor intensity conditions.

[0003] The winch in the prior art lifts an object to a certain position and then lowers it to another position. Since the winch has its own brake system and brake motor, when the object is in place, the winch stops running and brakes to prevent reverse rotation. With the development of production technology, during the process of lifting objects, it is necessary to stop at any position within the total travel range of the winch. The controller gives a distance, and the winch lifts the corresponding distance and feeds back to the controller the actual distance the winch travels, requiring precise control. However, the winch in the prior art only has the forward and reverse control of the drive motor, and does not have the function of precise travel control.

[0004] In view of the above situation, the applicant has developed a device capable of accurately controlling the operation of the winch based on the existing winch and combining it with electrical control technology. Summary of the invention

[0005] The purpose of the utility model is to provide a device for accurately controlling the operation of a winch. The technical problem to be solved by the utility model is: to add a synchronous reducer at the tail of the wheel shaft of the existing winch, the synchronous reducer is connected to an absolute rotary encoder and a power module for powering the encoder, and the above device is connected to the winch housing with a waterproof shell. The lifting distance of the winch is verified by setting the value of the absolute rotary encoder, and the value difference of the absolute rotary encoder is set, which is displayed on the display panel of the control cabinet after percentage conversion. The percentage of the hoist lifting position can be seen on the display panel. After conversion by the 4-20mA input and output module, the lifting position of the winch can be remotely and accurately controlled and the corresponding position can be fed back.

[0006] To achieve the above purpose, the technical solution of the utility model is:

[0007] A device for accurately controlling the operation of a winch, comprising: a rotating wheel, a connecting end cover, a synchronous reducer, an absolute value rotary encoder, a power module, a waterproof tail cover, a mounting frame, a waterproof cable connector, a waterproof housing, a control cable, a drive motor, a display screen, and a control cabinet. The device has a connecting end cover fixedly mounted at the end of the rotating wheel, a synchronous reducer fixedly mounted on the connecting end cover, an absolute value rotary encoder fixedly mounted at the tail of the synchronous reducer, a waterproof housing mounted on the outside of the synchronous reducer, a power module fixedly mounted on the mounting frame, the mounting frame fixedly mounted on the waterproof tail cover by connecting bolts, two ends of the waterproof housing respectively mounted on the connecting end cover and the mounting frame, a waterproof cable connector fixedly mounted on one side of the waterproof housing, the control cable is connected to the waterproof cable connector, the rotating shaft of the rotating wheel is connected to the synchronous reducer, and the rotating shaft of the synchronous reducer is connected to the rotating shaft of the absolute value rotary encoder.

[0008] The driving motor in the device is connected to the field control cabinet with a power line, the absolute value rotary encoder and the display screen are connected to the field control cabinet with control cables respectively, the field control cabinet is provided with a field / remote operation conversion knob, the field control cabinet is connected to the remote control cabinet through the control cable, and the field control cabinet operation control or the remote control cabinet centralized operation control is realized by selecting the position of the field / remote operation knob on the field control cabinet.

[0009] The absolute value rotary encoder used in the device is a mature product in the prior art, and the encoder power module is a power module used in conjunction with the absolute value rotary encoder.

[0010] Compared with the prior art, the positive effects of the utility model are:

[0011] 1. After the speed of the rotating wheel is synchronized by the synchronous reducer, the rotating wheel is counted by the absolute value rotary encoder, and the absolute value rotary encoder transmits the value to the control cabinet. The control cabinet confirms the position of the rotating wheel by reading and comparing the value of the absolute value rotary encoder;

[0012] 2. The device uses a 4-20mA analog input and output interface. The operator only needs to set a 4-20mA current value for the control cabinet. The control cabinet connects the winch motor to rotate and drives the winch wheel to run. The wheel drives the encoder to rotate synchronously. The encoder counts and feeds back signals to the control cabinet. The encoder feedback signal is converted into a 4-20mA current and compared with the input value. When the feedback value is equal to the input value, the control cabinet cuts off the power supply of the winch. Under the dual action of the brake motor and the brake system, the winch stops running, realizing the stop of the winch at any position in the full stroke.

[0013] 3. The device can realize remote centralized control. The input and output I / O interface of the control cabinet is connected to the central control room through the bus. Through the selection of the local control cabinet on-site / remote knob, the central control room can be uniformly selected for control and management. One control cabinet can control the operation of multiple winches at the same time;

[0014] 4. The device is reasonably designed, easy to operate, and highly automated, which reduces the difficulty of operation for operators and control of the winch. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technology of the utility model, the drawings required for use in the implementation are briefly introduced. The drawings described below are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0016] The structures, proportions, sizes, etc. of the drawings shown in this specification are only used to match the contents disclosed in the specification so as to facilitate the understanding and reading of those skilled in the art, and are not used to limit the conditions under which the present invention can be implemented. Any structural modification, change in proportion or adjustment in size should still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the technology of the present invention.

[0017] Figure 1 , a schematic diagram of the top view of the structure of the precise control winch operation device;

[0018] Figure 2 , absolute rotary encoder, drive motor, display screen and connection block diagram with on-site control cabinet and remote central control cabinet.

[0019] In the figure: 1. Rotating wheel, 2. Connecting end cover, 3. Synchronous reducer, 4. Absolute rotary encoder, 5. Power module, 6. Waterproof tail cover, 7. Mounting bracket, 8. Waterproof cable connector, 9. Waterproof housing, 10. Control cable, 11. Drive motor, 12. Display screen, 13. On-site control cabinet, 14. Remote control cabinet. DETAILED DESCRIPTION

[0020] The technical solution of the present utility model is further described clearly and completely below in conjunction with the accompanying drawings.

[0021] See attached Figure 1-2, installation and connection of the device, the connection end cover 2 is fixed on the end of the rotating wheel 1, the synchronous reducer 3 is fixed on the connection end cover 2, the absolute value rotary encoder 4 is installed at the tail of the synchronous reducer 3, the waterproof housing 9 is sleeved on the outside of the synchronous reducer 3, one end of the waterproof housing 9 is installed on the connection end cover 2, and the other end is installed on the mounting frame 7, the waterproof cable connector 8 is fixed on one side of the waterproof housing 9, and the control cable 10 is connected to the waterproof cable connector 9. The rotating shaft of the rotating wheel 1 is connected to the synchronous reducer 3, the speed of the rotating wheel 1 is synchronized through the synchronous reducer 3, and the rotating shaft of the synchronous reducer 3 is connected to the rotating shaft of the absolute value rotary encoder 4. The power module 5 and the absolute value rotary encoder 4 are installed in the waterproof housing 9 and fixed on the mounting frame 7, and the mounting frame 7 is fixed on the waterproof tail cover 6 through the connecting bolts.

[0022] The driving motor 11 in the device is connected to the field control cabinet 13 with a power cord, the absolute value rotary encoder 4 and the display screen 12 are connected to the field control cabinet 13 with control cables 10 respectively, the field control cabinet 13 is provided with a field / remote operation conversion knob, the field control cabinet 13 is connected to the remote control cabinet 14 through the control cable, and the field control cabinet 13 operation control or the remote control cabinet 14 centralized operation control is realized by selecting the position of the field / remote operation knob on the field control cabinet 13.

[0023] When in use, after the control cabinet 13 is powered on, the drive motor 11 drives the weight on the rotating wheel 1 to the corresponding upper and lower limits. The rotating wheel 1 is connected to the synchronous reducer 3 through the rotating shaft, and the speed of the rotating wheel 1 is synchronized with the synchronous reducer 3, and the rotary encoder 4 is driven to rotate synchronously for counting and signal feedback, and the upper and lower limits of the operation of the rotating wheel 1 are set respectively by the control module in the control cabinet 13. After setting, the drive motor 11 is operated again. When the drive motor 11 drives the weight on the rotating wheel 1 to the upper limit, the feedback signal of the absolute value rotary encoder 4 is converted into a current of 4-20mA and compared with the input value. When the feedback value is equal to the input value, the control cabinet 13 cuts off the power supply of the drive motor 11, and the drive motor 11 stops running. At the same time, the rotating wheel 1 stops rotating, and the weight on the rotating wheel 1 stops at the upper limit position. When the driving motor 11 drives the weight suspended on the rotating wheel 1 to run to the lower limit, the feedback signal of the absolute value rotary encoder 4 is converted into a 4-20mA current and compared with the input value. When the feedback value is equal to the input value, the control cabinet 13 cuts off the power supply of the driving motor 11, the driving motor 11 stops running, and the rotating wheel 1 stops rotating at the same time, and the weight suspended by the rotating wheel 1 stops at the lower limit. The 4-20mA analog quantity is connected to the control cabinet 13 for operation. After inputting any analog quantity in 4-20mA, when the weight suspended by the rotating wheel 1 runs to the position corresponding to the input analog quantity, the feedback signal of the absolute value rotary encoder 4 is converted into a 4-20mA current and compared with the input value. When the feedback value is equal to the input value, the control cabinet 13 cuts off the power supply of the driving motor 11, the driving motor 11 stops running, and the rotating wheel 1 stops rotating at the same time, and the weight suspended by the rotating wheel 1 stops at the position set by the analog quantity. The lifting distance of the rotating wheel 1 is compared with the value of the absolute value rotary encoder 4, and the value difference of the absolute value rotary encoder 4 is displayed on the panel of the display screen 12 of the control cabinet 13 after being converted into a percentage. The percentage of the lifting position of the rotating wheel 1 can be seen on the display panel, and then after conversion by the 4-20mA input and output module, the lifting position of the rotating wheel 1 can be remotely and accurately controlled and the corresponding position can be fed back, thereby realizing the requirement that the rotating wheel 1 can stop at any position within the travel range. The power supply module 5 is used to supply the absolute value rotary encoder 4 with working power.

[0024] The above is only a non-limiting implementation method of the utility model, and a large number of embodiments can be derived. For ordinary technicians in this field, without departing from the creative concept of the present invention and without making creative work, several modified and improved embodiments can be made, which all fall within the scope of protection of the present invention.

Claims

1. A device for accurately controlling the operation of a winch, comprising: A rotating wheel (1), a connecting end cover (2), a synchronous reducer (3), an absolute value rotary encoder (4), a power module (5), a waterproof tail cover (6), a mounting frame (7), a waterproof cable connector (8), a waterproof housing (9), a control cable (10), a drive motor (11), a display screen (12), a field control cabinet (13), and a remote control cabinet (14), characterized in that: the device is fixedly provided with a connecting end cover (2) at the end of the rotating wheel (1), a synchronous reducer (3) is fixedly provided on the connecting end cover (2), and an absolute value rotary encoder is fixedly provided at the tail of the synchronous reducer (3). (4), a waterproof housing (9) is mounted on the outside of the synchronous reducer (3), a power module (5) is fixedly mounted on a mounting frame (7), the mounting frame (7) is fixedly mounted on a waterproof tail cover (6) through connecting bolts, two ends of the waterproof housing (9) are respectively mounted on the connecting end cover (2) and the mounting frame (7), a waterproof cable connector (8) is fixedly mounted on one side of the waterproof housing (9), a control cable (10) is connected to the waterproof cable connector (8), a rotating shaft of the rotating wheel (1) is connected to the synchronous reducer (3), and a rotating shaft of the synchronous reducer (3) is connected to a rotating shaft of the absolute value rotary encoder (4).

2. The device for accurately controlling the operation of a winch according to claim 1, characterized in that: The driving motor (11) in the device is connected to a field control cabinet (13) via a power line, the absolute value rotary encoder (4) and the display screen (12) are connected to the field control cabinet (13) via control cables (10), and the field control cabinet (13) is connected to a remote control cabinet (14) via the control cables (10).

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