Safety protection equipment of winch and winch

Abstract

The utility model discloses a safety protection device of a winch and the winch, and the safety protection device comprises a rotating speed detection device arranged at the position of a driving motor of the winch; the position detection device is arranged at a rope winding device of the winch; and the controller is electrically connected with the rotating speed detection device, the position detection device and the winch. According to the utility model, the technical problem that the operation safety of the winch is low is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of winches, and in particular relates to a safety protection device for a winch and a winch. Background Art

[0002] During the winch's wire rope reeling process, a component failure can cause the wire rope to misalign, leading to derailment, damage to the guide pulley, and uncontrolled traction loads, potentially causing major production safety accidents. Therefore, the low operational safety of winches is a technical issue that urgently needs to be addressed. Utility Model Content

[0003] The embodiment of the utility model provides a safety protection device for a hoist and a hoist, which solves the technical problem of low safety in the operation of the hoist.

[0004] In the first aspect, an embodiment of the utility model provides a safety protection device for a winch, comprising: a speed detection device, arranged at the drive motor of the winch; a position detection device, arranged at the rope retractor of the winch; and a controller, electrically connected to the speed detection device, the position detection device and the winch.

[0005] In combination with the first aspect of the present invention, in some embodiments, the speed detection device includes: an encoder, coaxially installed with the drive motor; a first signal conversion module, the input end of the first signal conversion module is electrically connected to the encoder, and the output end of the first signal conversion module is electrically connected to the controller.

[0006] In combination with the first aspect of the utility model, in some embodiments, the position detection device includes: a first bracket, the first bracket is arranged on the extension line of the moving route of the rope collecter, and is spaced apart from the rope collecter; a laser transceiver is fixedly arranged on the first bracket; a laser reflector plate is fixedly arranged on the rope collecter, the plate surface of the laser reflector plate faces the receiving end and the transmitting end of the laser transceiver, and the laser reflector plate and the laser transceiver are at the same horizontal height; a second signal conversion module, the input end of the second signal conversion module is electrically connected to the laser transceiver, and the output end of the second signal conversion module is electrically connected to the controller.

[0007] In combination with the first aspect of the present invention, in some embodiments, the first bracket includes: a bracket body; and a top screw provided at one end of the bracket body.

[0008] In combination with the first aspect of the present invention, in some embodiments, it further includes: a chain detection device, electrically connected to the controller, and the chain detection device is arranged opposite to the chain in the winch for driving the rope retractor.

[0009] In combination with the first aspect of the present utility model, in some embodiments, it further includes: a second bracket, one end of the second bracket is connected to the winch, and the chain detection device is fixedly arranged at the other end of the second bracket.

[0010] In combination with the first aspect of the present utility model, in some embodiments, it further includes: a display, electrically connected to the controller.

[0011] In combination with the first aspect of the present utility model, in some embodiments, it further includes: an alarm device, electrically connected to the controller.

[0012] In combination with the first aspect of the present utility model, in some embodiments, the alarm device includes a signal lamp and / or a buzzer.

[0013] In a second aspect, an embodiment of the present utility model provides a winch, including the safety protection device of the winch according to any one of the first aspect.

[0014] One or more technical solutions provided by the embodiments of the present utility model at least achieve the following technical effects or advantages:

[0015] A safety protection device for a winch provided by an embodiment of the present utility model includes: a rotational speed detection device, arranged at the drive motor of the winch; a position detection device, arranged at the rope take-up device of the winch; a controller, electrically connected to the rotational speed detection device, the position detection device, and the winch. The controller obtains the rotational speed of the drive motor through the rotational speed detection device, and obtains the position of the rope take-up device through the position detection device. If the drive motor maintains a certain rotational speed and the position of the rope take-up device does not change, the controller determines that the winch has a fault and controls the working state of the winch to a pause state, avoiding the misalignment of the steel wire rope caused by the winch fault, and thus avoiding the occurrence of production safety accidents. Therefore, the operating safety of the winch is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0017] Figure 1 It is a schematic diagram of the safety protection device for the winch in the embodiment of the present utility model;

[0018] Figure 2This is a layout schematic diagram of some components in the rotation speed detection device, position detection device, and chain detection device in the embodiments of the present utility model. Detailed implementation manners

[0019] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

[0020] In the present utility model, descriptions such as "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions between various embodiments may be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement it. When the combination of technical solutions appears to be contradictory or unable to be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0021] Figure 1 This is a schematic diagram of the safety protection equipment of the winch in the embodiments of the present utility model. Refer to Figure 1 As shown, a safety protection equipment of a winch provided by an embodiment of the present utility model includes: a rotation speed detection device 10, which is arranged at the drive motor 50 of the winch; a position detection device 20, which is arranged at the rope take-up device 60 of the winch; and a controller 30, which is electrically connected to the rotation speed detection device 10, the position detection device 20, and the winch.

[0022] It should be noted that the rotation speed detection device 10 is used to obtain the detected rotation speed, and the detected rotation speed is the rotation speed of the drive motor 50 of the winch. The position detection device 20 is used to obtain the detected position, and the detected position is the position of the rope take-up device 60 of the winch.

[0023] In some embodiments, the controller 30 is used to: obtain the detected rotation speed of the drive motor 50 from the rotation speed detection device 10; obtain the detected position of the rope take-up device 60 from the position detection device 20; control the winch based on the detected rotation speed and the detected position; wherein, controlling the winch based on the detected rotation speed and the detected position may include: if the detected rotation speed is greater than the preset rotation speed and the change amount of the detected position is less than the preset change amount threshold, controlling the working state of the winch to be a pause state.

[0024] In some embodiments, the controller 30 is further configured to: obtain the detected rotational speed of the drive motor 50 from the rotational speed detection device 10; control the winch based on the detected rotational speed; wherein, controlling the winch based on the detected rotational speed may include: obtaining the set rotational speed of the drive motor 50; if the deviation between the set rotational speed and the detected rotational speed is greater than a preset rotational speed deviation threshold, controlling the working state of the winch to a paused state.

[0025] It should be noted that when the detected rotational speed is greater than the preset rotational speed and the change amount of the detected position is less than the preset change amount threshold, it indicates that a fault has occurred in the winch. For example, it may be a fault in the rope take-up device 60 or a break in the chain 70, etc. When the deviation between the set rotational speed and the detected rotational speed is greater than the preset rotational speed deviation threshold, it indicates that a fault has occurred in the drive motor 50 or the speed reducer of the winch. For any of the above-mentioned faults, if the winch continues to operate at this time, it may cause the steel wire rope to be misaligned. After misalignment, it may lead to derailment of the steel wire rope, damage to the guide wheel, and loss of control of the traction load, etc., thereby triggering a major production safety accident. Therefore, controlling the working state of the winch to a paused state avoids the misalignment of the steel wire rope, and thus avoids triggering a production safety accident. Therefore, the operating safety of the winch is improved.

[0026] In some embodiments, the rotational speed detection device 10 may include: an encoder 110 coaxially installed with the drive motor 50; a first signal conversion module, the input end of the first signal conversion module is electrically connected to the encoder 110, and the output end of the first signal conversion module is electrically connected to the controller 30.

[0027] It should be noted that the encoder 110 can generate a rotational speed signal for characterizing the rotational speed of the drive motor 50, then transmit the rotational speed signal to the first signal conversion module, and the first signal conversion module then converts the rotational speed signal into a signal recognizable by the controller 30, and the controller 30 then determines the detected rotational speed according to the recognizable signal.

[0028] In some embodiments, the position detection device 20 may include: a first bracket, the first bracket is arranged on the extension line of the moving route of the rope take-up device 60 and is spaced from the rope take-up device 60; a laser transceiver 210 fixedly arranged on the first bracket; a laser reflector 220 fixedly arranged on the rope take-up device 60, the plate surface of the laser reflector 220 faces the receiving end and the transmitting end of the laser transceiver 210, and the laser reflector 220 and the laser transceiver 210 are at the same horizontal height; a second signal conversion module, the input end of the second signal conversion module is electrically connected to the laser transceiver 210, and the output end of the second signal conversion module is electrically connected to the controller 30.

[0029] It should be noted that the first bracket is spaced from the rope take-up device 60. Specifically, the distance between the first bracket and the rope take-up device 60 can be greater than a first preset distance, and the first preset distance can be 0.1 m, 0.5 m, 1 m, 3 m, etc.

[0030] Refer to Figure 2 as shown Figure 2 This is a layout schematic diagram of some components in the rotational speed detection device, position detection device, and chain detection device in the embodiment of the present invention. Among them, the movement route of the rope take-up device 60 is Figure 2 the left-right direction of the position where the rope take-up device 60 is located in, and the winch includes a winch body 80.

[0031] It should be noted that the laser transceiver 210 emits laser to the laser reflector 220, and then the laser transceiver 210 receives the laser reflected back by the laser reflector 220. The laser transceiver 210 can generate a position signal for representing the position of the rope take-up device 60 according to the reflected laser. The second signal conversion module obtains the position signal from the laser transceiver 210 and converts the position signal into a signal recognizable by the controller 30. The controller 30 determines the detection position according to the recognizable signal.

[0032] In some embodiments, the first bracket may include: a bracket body; a setscrew provided at one end of the bracket body.

[0033] It should be noted that the position of the laser transceiver 210 can be adjusted by the setscrew, which can make the plate surface of the laser reflector 220 more accurately aligned with the receiving end and the transmitting end of the laser transceiver 210, and the horizontal heights of the laser reflector 220 and the laser transceiver 210 can be adjusted to be closer. Therefore, the accuracy of obtaining the detection position is improved, the winch can be controlled more accurately, and the operating safety of the winch is further improved.

[0034] In some embodiments, the safety protection device of the winch may further include: a chain detection device 40 electrically connected to the controller 30, and the chain detection device 40 is disposed opposite to the chain 70 for driving the rope take-up device in the winch.

[0035] It should be noted that the chain detection device 40 is used to detect whether the chain 70 is broken. The distance between the chain detection device 40 and the chain 70 can be less than a second preset distance. The chain detection device 40 is disposed in the vicinity of the chain 70, and the second preset distance can be a distance less than 1 cm, specifically 0.5 cm.

[0036] In some embodiments, the controller 30 is further configured to: obtain chain information from the chain detection device 40; control the hoist based on the chain information; wherein, controlling the hoist based on the chain information may include: if the chain information indicates that the chain 70 is broken, controlling the working state of the hoist to a pause state.

[0037] It should be noted that when the chain 70 is broken, if the hoist continues to work at this time, it may cause the wire rope to be misaligned. After misalignment, the wire rope may derail, the guide wheel may be damaged, and the traction load may be out of control, etc., which may lead to large-scale production safety accidents. Therefore, controlling the working state of the hoist to a pause state avoids the misalignment of the wire rope, and thus avoids triggering production safety accidents. Therefore, the operating safety of the hoist is improved.

[0038] In some embodiments, the controller 30 is further configured to: obtain the detected rotation speed of the drive motor 50 from the rotation speed detection device 10; obtain the detected position of the rope reel 60 from the position detection device 20; obtain chain information from the chain detection device 40; control the hoist based on the detected rotation speed, the detected position, and the chain information; wherein, controlling the hoist based on the detected rotation speed, the detected position, and the chain information may include: if the detected rotation speed is greater than the preset rotation speed, the chain information indicates that the chain 70 is not broken, and the change amount of the detected position is less than the preset change amount threshold, controlling the working state of the hoist to a pause state.

[0039] It should be noted that the detected rotation speed is greater than the preset rotation speed, the chain information indicates that the chain 70 is not broken, and the change amount of the detected position is less than the preset change amount threshold, indicating that the rope reel 60 has a fault. At this time, controlling the working state of the hoist to a pause state avoids the misalignment of the wire rope, and thus avoids triggering production safety accidents. Therefore, the operating safety of the hoist is improved.

[0040] In some embodiments, the safety protection device of the hoist may further include: a second bracket, one end of the second bracket is connected to the hoist, and the chain detection device 40 is fixedly arranged at the other end of the second bracket.

[0041] In some embodiments, the safety protection device of the hoist may further include: a display, electrically connected to the controller 30.

[0042] It should be noted that the display can display the detected rotation speed of the drive motor 50, the detected position of the rope reel 60, and the chain information. In addition, the display can also display an alarm message, and the alarm message can be used to prompt the type of fault of the hoist.

[0043] In some embodiments, the safety protection device of the hoist may further include: an alarm device, electrically connected to the controller 30.

[0044] In some embodiments, the controller 30 is further configured to: after controlling the working state of the winch to be the pause state, control the alarm device to give an alarm.

[0045] It should be noted that even if the working state of the winch is controlled to be the pause state, there may still be a situation where some components continue to operate, which may also cause safety accidents. Therefore, the embodiments of the present invention limit the control of the alarm device to give an alarm, prompt the on-site personnel to check, and timely pause the winch, further avoiding the situation of wire rope misalignment caused by the continuous operation of the winch, and thus avoiding the occurrence of production safety accidents. Therefore, the operating safety of the winch is further improved.

[0046] In some embodiments, the alarm device may include a signal lamp and / or a buzzer.

[0047] It should be noted that during daily work, the rope winding and unwinding work of the winch is solely completed by the rope winder 60, with a pure mechanical structure control and simple control. When the chain 70 driving the rope winder 60 breaks or the rope winder 60 itself gets stuck, it will cause the wire rope to be misaligned, and further lead to equipment damage and production shutdown caused by the wire rope misalignment. By adding an encoder 110 to the winch motor, adding a position detection device 20 at the rope winder 60, and adding a chain detection device 40 at the chain 70 driving the rope winder 60, through the data acquisition of the three sensors and adding a new logic judgment and protection mechanism, the stability and early warning shutdown mechanism of the winch during production operation are ensured, directly avoiding the direct economic losses caused by major equipment damage. The system equipment provided by the embodiments of the present invention is small in size and has strong applicability to the construction site; installing a laser reflector 220 on the rope winder 60 will extend the detection distance of the sensor, enabling real-time positioning of the position sensor for detecting the rope winder 60, and avoiding wire rope misalignment caused when the winch motor operates while the rope winder 60 does not operate. The structure is simple, the cost is low, and it is convenient for large-scale implementation in industry.

[0048] It should be noted that the first signal conversion module and the second signal conversion module may be PLC analog modules. The failure of the rope winder 60 may be that the rope winder 60 gets stuck. Any of the above failures requires timely shutdown for repair. Through the above device, the judgment of abnormal motor failures, the judgment of chain 70 breakage failures, and the judgment of rope winder 60 failures can be completed, avoiding the risk of wire rope misalignment and subsequent equipment damage.

[0049] A safety protection device for a winch provided by an embodiment of the present utility model includes: a rotation speed detection device 10 disposed at a driving motor 50 of the winch; a position detection device 20 disposed at a rope take-up device 60 of the winch; and a controller 30 electrically connected to the rotation speed detection device 10, the position detection device 20, and the winch. The controller 30 obtains the rotation speed of the driving motor 50 through the rotation speed detection device 10 and obtains the position of the rope take-up device 60 through the position detection device 20. If the driving motor 50 maintains a certain rotation speed and the position of the rope take-up device 60 does not change, the controller 30 determines that the winch has a fault and controls the working state of the winch to a pause state, avoiding the misalignment of the steel wire rope caused by the winch fault, and thus avoiding the occurrence of production safety accidents. Therefore, the operating safety of the winch is improved.

[0050] Based on the same inventive concept, an embodiment of the present utility model provides a winch including the safety protection device of the winch in any one of the above embodiments.

[0051] It should be understood that more implementation details of the winch in the embodiments of the present utility model are referred to the safety protection device of the winch described above. For the sake of brevity of the specification, they are not repeated here.

[0052] The above are only the embodiments of the present utility model and are not intended to limit the present utility model. For those skilled in the art, the present utility model can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included in the scope of the claims of the present utility model.

Claims

1. A safety protection device for a winch, characterized in that, Comprising: A rotational speed detection device, arranged at the driving motor of the hoist; A position detection device, arranged at the rope take-up device of the hoist; A controller, electrically connected to the rotational speed detection device, the position detection device and the hoist.

2. The safety protection device of the hoist according to claim 1, characterized in that The rotational speed detection device includes: An encoder, coaxially installed with the driving motor; A first signal conversion module, the input end of the first signal conversion module is electrically connected to the encoder, and the output end of the first signal conversion module is electrically connected to the controller.

3. The safety protection device for a hoist according to claim 1, characterized in that, The position detection device includes: A first bracket, arranged on the extension line of the moving route of the rope take-up device and spaced from the rope take-up device; A laser transceiver, fixedly arranged on the first bracket; A laser reflector, fixedly arranged on the rope take-up device, the plate surface of the laser reflector faces the receiving end and the transmitting end of the laser transceiver, and the laser reflector and the laser transceiver are at the same horizontal height; A second signal conversion module, the input end of the second signal conversion module is electrically connected to the laser transceiver, and the output end of the second signal conversion module is electrically connected to the controller.

4. The safety protection device of the hoist according to claim 3, characterized in that, The first bracket includes: A bracket body; A setscrew, arranged at one end of the bracket body.

5. The safety protection device for a hoist according to claim 1, characterized in that, Further comprising: A chain detection device, electrically connected to the controller, and arranged opposite to the chain for driving the rope take-up device in the hoist.

6. The safety protection device for a hoist according to claim 5, characterized in that, Further comprising: A second bracket, one end of the second bracket is connected to the hoist, and the chain detection device is fixedly arranged at the other end of the second bracket.

7. The safety protection device for a hoist according to claim 1, characterized in that, Further comprising: A display, electrically connected to the controller.

8. The safety protection device for a hoist according to any one of claims 1-7, characterized in that, Further comprising: An alarm device, electrically connected to the controller.

9. The safety protection device of the winch according to claim 8, characterized in that, The alarm device includes a signal lamp and / or a buzzer.

10. A winch, characterized in that, A safety protection device for the hoist according to any one of claims 1-9.

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