Broken chain detection device for winch box

Abstract

The utility model discloses a winch box broken chain detection device which comprises a main body unit and a detection unit, the main body unit comprises a bottom plate and a winding drum, a fixing frame is fixedly installed at the upper end of the bottom plate, and the detection unit comprises an installation seat and a travel switch. In a normal state, due to the action of the chain, the rotating frame is supported to be suspended and is not in contact with the travel switch, if the chain is disconnected, the rotating frame droops due to the automatic action of the rotating frame, does circular motion around the first pin shaft and is in contact with the travel switch, and the travel switch acts and sends out a signal; when the winding motor rotates, the winding motor stops rotating quickly, so that rope winding of the winding drum is stopped, the problems of steel wire rope lamination and rope disorder are avoided, normal operation of equipment is guaranteed, and damage to the equipment and the surrounding environment is avoided.

Description

Technical Field

[0001] This utility model relates to the field of winch housing technology, and in particular to a winch housing chain breakage detection device. Background Technology

[0002] The chain breakage detection device in the winch housing is an important safety device. Its main function is to monitor the chain breakage to prevent equipment damage or production accidents caused by chain breakage.

[0003] The chain in a winch housing inevitably wears down due to frequent contact with the sprockets. To ensure safety, manufacturers typically provide after-sales service, including regular chain wear checks and recommending or mandating replacement when wear reaches a certain level to prevent chain breakage. However, some users, for cost reasons, may ignore this recommendation and fail to replace the chain according to the prescribed cycle, thus increasing the risk of chain breakage. Once a chain breaks, the chain reaction can be severe. The moving platform will lose synchronization with the drum's rope winding, causing the drum to continuously wind the rope in one position, leading to wire rope entanglement, layering, and tangling. These problems not only affect the normal operation of the equipment but may also damage the equipment itself and the surrounding environment, and even cause more serious safety accidents.

[0004] Therefore, a hoist box chain breakage detection device is needed to solve the above problems. Utility Model Content

[0005] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the present invention.

[0006] In view of the problems of the aforementioned hoist box chain breakage detection device, this utility model is proposed.

[0007] Therefore, the purpose of this utility model is to provide a winch box chain breakage detection device, which is used to solve the problem that "some users may ignore this recommendation due to cost considerations and fail to replace the chain according to the prescribed cycle, thereby increasing the risk of chain breakage. Once the chain breaks, the chain reaction will be very serious. The moving platform will lose synchronization with the drum's rope winding, causing the drum to continuously wind the rope at a certain position, which will lead to the problems of wire rope entanglement, stacking, and tangling. These problems will not only affect the normal operation of the equipment, but may also damage the equipment itself and the surrounding environment, and even cause more serious safety accidents."

[0008] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a hoist box chain breakage detection device, comprising:

[0009] The main unit includes a base plate and a roll, and a fixing frame is fixedly installed on the upper end of the base plate;

[0010] The detection unit includes a mounting base and a limit switch. The mounting base is fixedly connected to the side wall of the fixed frame. The mounting base has a positioning hole, and a No. 1 pin is provided in the positioning hole. A rotating frame is rotatably sleeved on the No. 1 pin. A sprocket is provided at the other end of the rotating frame. A locking bolt is engaged with the upper inner wall of the mounting base, and a locking nut is engaged with the locking bolt. The lower end of the locking bolt abuts against the upper end of the rotating frame. The limit switch is fixedly installed on the fixed frame.

[0011] As a preferred embodiment of the hoist box chain breakage detection device of the present invention, a second pin is fixedly inserted at the center of the sprocket, and a fixing hole is provided on the rotating frame, wherein the second pin is rotatably connected in the fixing hole.

[0012] In a preferred embodiment of the winch box chain breakage detection device of the present invention, a second pin hole is provided at one end of the second pin shaft, and a second snap ring is provided in the second pin hole.

[0013] As a preferred embodiment of the hoist box chain breakage detection device of the present invention, wherein: a first pin hole is opened at one end of the first pin shaft, and a first retaining ring is provided in the first pin hole.

[0014] In a preferred embodiment of the winch box chain breakage detection device of this utility model, a U-shaped groove is provided at the upper end of the fixed frame, a bearing seat is fixedly installed on one side of the fixed frame, and a bearing is fixedly installed at the center of the bearing seat.

[0015] In a preferred embodiment of the winch box chain breakage detection device of the present invention, a central shaft is fixedly inserted at the center of the drum, a drive gear is fixedly sleeved at one end of the central shaft, a bearing is fixedly sleeved on the central shaft, and the central shaft is set in a U-shaped groove.

[0016] The beneficial effects of this utility model are:

[0017] The sprocket is mounted on the front end of the rotating frame via pin number two. The sprocket then presses down on the chain under its own weight. Under normal conditions, the rotating frame is supported and suspended in the air due to the action of the chain, and is not in contact with the limit switch. If the chain breaks, the rotating frame will automatically droop and rotate around pin number one, making contact with the limit switch. The limit switch will then activate and send a signal to quickly stop the winch motor, thereby stopping the drum from winding the rope. This prevents the wire rope from becoming tangled or overlapping, ensuring the normal operation of the equipment and avoiding damage to the equipment itself and the surrounding environment. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0019] Figure 1 This is a front structural diagram of a hoist box chain breakage detection device according to the present invention.

[0020] Figure 2 This is a side view of the hoist box chain breakage detection device of this utility model.

[0021] Figure 3 This utility model Figure 1 A magnified structural diagram of point A in the middle.

[0022] Figure descriptions: 100, Main body unit; 101, Base plate; 102, Fixing frame; 103, Drum; 104, Central shaft; 105, Drive gear; 106, Bearing; 200, Detection unit; 201, Mounting base; 202, No. 1 pin; 2021, No. 1 snap ring; 203, Rotating frame; 204, Sprocket; 205, No. 2 pin; 2051, No. 2 snap ring; 206, Locking bolt; 207, Locking nut. Detailed Implementation

[0023] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0024] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0025] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0026] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not adhering to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, actual manufacturing should include the three-dimensional spatial dimensions of length, width, and depth.

[0027] Reference Figures 1-3 As an embodiment of this utility model, a hoist box chain breakage detection device is provided, which includes:

[0028] The main unit 100 includes a base plate 101 and a drum 103. A fixing frame 102 is fixedly installed on the upper end of the base plate 101.

[0029] The detection unit 200 includes a mounting base 201 and a limit switch 208. The mounting base 201 is fixedly connected to the side wall of the fixed frame 102. The mounting base 201 has a positioning hole, and a first pin 202 is provided in the positioning hole. A rotating frame 203 is rotatably sleeved on the first pin 202. A sprocket 204 is provided at the other end of the rotating frame 203. A locking bolt 206 is engaged in the inner wall of the upper end of the mounting base 201. A locking nut 207 is engaged in the locking bolt 206. The lower end of the locking bolt 206 abuts against the upper end of the rotating frame 203. The limit switch 208 is fixedly installed on the fixed frame 102.

[0030] The sprocket 204 is installed at the front end of the rotating frame 203 via the second pin 205. The sprocket 204 presses down on the chain by its own weight. Under normal conditions, the rotating frame 203 is supported and suspended in the air due to the action of the chain, and is not in contact with the limit switch 208. If the chain breaks, the rotating frame 203 will automatically droop and make a circular motion around the first pin 202, and come into contact with the limit switch 208. The limit switch 208 will activate and send a signal to quickly stop the winch motor from rotating, thereby stopping the drum 103 from winding the rope, so as to ensure that there is no problem of wire rope stacking and tangling. This not only ensures the normal operation of the equipment, but also avoids damage to the equipment itself and the surrounding environment.

[0031] The sprocket 204 has a second pin 205 fixedly inserted at its center. The rotating frame 203 has a fixing hole, and the second pin 205 is rotatably connected in the fixing hole, thus supporting the sprocket 204.

[0032] One end of the second pin 205 is provided with a second pin hole, and a second retaining ring 2051 is provided in the second pin hole. The second retaining ring 2051 plays a limiting role for the second pin 205.

[0033] One end of the first pin 202 has a first pin hole, and a first retaining ring 2021 is installed in the first pin hole. The first retaining ring 2021 plays a limiting role for the first pin 202.

[0034] The upper end of the fixing frame 102 is provided with a U-shaped groove. A bearing seat is fixedly installed on one side of the fixing frame 102. A bearing 106 is fixedly installed at the center of the bearing seat. A central shaft 104 is fixedly inserted at the center of the drum 103. A drive gear 105 is fixedly sleeved at one end of the central shaft 104. The bearing 106 is fixedly sleeved on the central shaft 104. The central shaft 104 is set in the U-shaped groove. The bearing 106 provides rotational support for the central shaft 104.

[0035] Working principle: In this device, the drive gear 105 is driven to rotate by the hoist motor and chain (not shown in the figure), and the drum 103 is driven to rotate through the central shaft 104 to wind up the rope. The sprocket 204 is installed at the front end of the rotating frame 203 through the second pin 205. The sprocket 204 presses on the chain by its own weight. Under normal conditions, the rotating frame 203 is supported and suspended in the air due to the action of the chain and is not in contact with the limit switch 208. If the chain breaks, the rotating frame 203 will automatically droop and make a circular motion around the first pin 202, and contact the limit switch 208. The limit switch 208 will activate and send a signal to make the hoist motor stop rotating quickly, thereby stopping the drum 103 from winding up the rope, so as to ensure that the problem of wire rope stacking and tangling will not occur. This not only ensures the normal operation of the equipment, but also avoids damage to the equipment itself and the surrounding environment.

[0036] Furthermore, after replacing the broken chain and raising the rotating frame 203, the limit switch 208 is reset, and the restriction is released. Additionally, by using the locking bolt 206 against the upper end of the rotating frame 203, the position of the rotating frame 203 can be adjusted. Then, the sprocket 204 at the front end of the rotating frame 203 is used to tighten or loosen the chain during operation. The contents not described in detail in this specification are prior art known to those skilled in the art.

[0037] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A hoist box chain breakage detection device, characterized in that, include: The main body unit (100) includes a base plate (101) and a drum (103), and a fixing frame (102) is fixedly installed on the upper end of the base plate (101); The detection unit (200) includes a mounting base (201) and a limit switch (208). The mounting base (201) is fixedly connected to the side wall of the fixed frame (102). The mounting base (201) has a positioning hole, and a first pin (202) is provided in the positioning hole. A rotating frame (203) is rotatably sleeved on the first pin (202). A sprocket (204) is provided at the other end of the rotating frame (203). A locking bolt (206) is engaged in the inner wall of the upper end of the mounting base (201). A locking nut (207) is engaged in the locking bolt (206). The lower end of the locking bolt (206) abuts against the upper end of the rotating frame (203). The limit switch (208) is fixedly installed on the fixed frame (102).

2. The hoist box chain breakage detection device according to claim 1, characterized in that: A second pin (205) is fixedly inserted at the center of the sprocket (204), and a fixing hole is provided on the rotating frame (203). The second pin (205) is rotatably connected in the fixing hole.

3. The hoist box chain breakage detection device according to claim 2, characterized in that: One end of the second pin (205) is provided with a second pin hole, and a second retaining ring (2051) is provided in the second pin hole.

4. The hoist box chain breakage detection device according to claim 1, characterized in that: One end of the first pin (202) has a first pin hole, and a first retaining ring (2021) is provided in the first pin hole.

5. The hoist box chain breakage detection device according to claim 1, characterized in that: The upper end of the fixing frame (102) is provided with a U-shaped groove, and a bearing seat is fixedly installed on one side of the fixing frame (102), and a bearing (106) is fixedly installed at the center of the bearing seat.

6. The hoist box chain breakage detection device according to claim 5, characterized in that: A central shaft (104) is fixedly inserted at the center of the drum (103), a drive gear (105) is fixedly sleeved at one end of the central shaft (104), a bearing (106) is fixedly sleeved on the central shaft (104), and the central shaft (104) is set in a U-shaped groove.

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