Chain fracture detection device

Abstract

The embodiment of the utility model provides a chain fracture detection device, and relates to the field of chain fracture detection. The problem that the breakage condition of a chain cannot be accurately and rapidly detected is solved. The chain fracture detection device comprises a substrate, a sensor and an induction metal plate, wherein the sensor is fixed on the substrate; the induction metal plate is used for being arranged on one side of the chain and used for being inducted by the sensor, or the induction metal plate is used for being driven by the gravity of the chain to be disengaged from induction with the sensor under the condition that the chain falls off. When the chain is broken, the sensing metal plate and the sensor are separated from sensing due to the fact that the chain is smashed down due to gravity, so that the chain breakage condition is detected, the sensing state of the sensing metal plate and the sensor is not affected by surrounding environment noise, the structure principle is simple, and corresponding and quick judgment on chain breakage can be made accurately and quickly.

Description

Technical Field

[0001] The utility model relates to the field of chain break detection, in particular to a chain break detection device. Background Art

[0002] Chain transmission is often used in mechanical equipment. Chain transmission has high efficiency and large load, but it is inevitable that it will break after long-term use. If the break is not discovered in time, there will be great safety hazards if the equipment continues to operate. Therefore, it is essential to have a chain break detection device for the chain transmission structure.

[0003] Chain break detection can currently be achieved through the following methods:

[0004] Acoustic wave method: Detection is performed using the principle of sound waves. By placing a microphone near the sprocket, the characteristic sound emitted when the chain breaks can be recorded, and the location of the broken chain can be determined. This method is simple and easy to use, causes little damage to the equipment, and can be performed without affecting production. However, due to interference factors such as environmental noise, the accuracy of this method may be limited to a certain extent.

[0005] Vibration method: Detect whether the chain is broken by monitoring the vibration of the chain. During operation, if the chain breaks, it will cause the vibration frequency of the mechanical equipment to change. Therefore, it is possible to determine whether the chain is broken by detecting the vibration signal. This method has high accuracy, but it requires professional personnel to operate. Utility Model Content

[0006] The purpose of the utility model includes, for example, providing a chain breakage detection device, which can improve the problem that the chain breakage situation cannot be accurately and quickly detected.

[0007] The embodiments of the present invention can be implemented as follows:

[0008] An embodiment of the utility model provides a chain breakage detection device, comprising a substrate, a sensor and a sensing sheet metal, wherein the sensor is fixed on the substrate; the sensing sheet metal is used to be arranged on one side of the chain, the sensing sheet metal is used to provide sensing with the sensor, or the sensing sheet metal is used to be driven by the gravity of the chain and disengage from the sensor when the chain falls.

[0009] In addition, the chain breakage detection device provided in the embodiment of the utility model may also have the following additional technical features:

[0010] Optionally, the chain breakage detection device also includes a linkage sheet metal; the sensing sheet metal is fixed to the linkage sheet metal, and the linkage sheet metal is correspondingly arranged below the chain. The linkage sheet metal is used to drive the sensing sheet metal to be separated from the sensor by the gravity of the chain when the chain falls.

[0011] Optionally, the induction sheet metal and the linkage sheet metal are fixed at an angle.

[0012] Optionally, the chain breakage detection device also includes a mounting base plate and a transfer base plate; the mounting base plate is fixed to the base plate; the linkage sheet metal is fixed to the transfer base plate at an angle, and the connection between the linkage sheet metal and the transfer base plate is rotatably connected to the mounting base plate; the sensing sheet metal is fixed to the transfer base plate, and the linkage sheet metal is used to rotate driven by the gravity of the chain to drive the sensing sheet metal to rotate, thereby disengaging from the sensor.

[0013] Optionally, the sensing sheet metal includes a first sheet metal strip and a second sheet metal strip fixed at an angle; the first sheet metal strip is fixed to the adapter base plate, and the second sheet metal strip is used for sensing with or without sensing with the sensor.

[0014] Optionally, the chain breakage detection device also includes a protective cover; the protective cover is fixed on the substrate, and the protective cover is arranged on the outside of the sensor, and the protective cover is provided with an avoidance opening, and the avoidance opening is used for allowing the second sheet metal bar to extend into and for avoiding the rotation of the second sheet metal bar.

[0015] Optionally, the linkage sheet metal is provided with a plurality of weight-reducing holes; a weight block is provided on the adapter base plate, and the weight block has the function of pushing the sensing sheet metal to rotate downward so as to match the movement trend that can be sensed by the sensor.

[0016] Optionally, the substrate is fixed on one side of the chain; the chain breakage detection device also includes a magnetic attraction component; the linkage sheet metal is adsorbed and fixed to the substrate through the magnetic attraction component so that the sensing sheet metal and the sensor can be sensed, or the linkage sheet metal is used to separate from the substrate under the action of the gravity of the falling chain.

[0017] Optionally, the substrate is arranged vertically, and the sensor is fixed on one side of the substrate; the sensing sheet metal is vertically fixed on the linkage sheet metal, and the linkage sheet metal is used for being adsorbed and fixed to the substrate horizontally.

[0018] Optionally, the magnetic attraction component includes a first magnetic attraction component and a second magnetic attraction component; the first magnetic attraction component is fixed to the bottom of the substrate, and the second magnetic attraction component is fixed to the surface of the linkage sheet metal, and the first magnetic attraction component can be adsorbed and fixed to the second magnetic attraction component.

[0019] The beneficial effects of the chain breakage detection device of the embodiment of the utility model include, for example:

[0020] The chain breakage detection device comprises a substrate, a sensor and a sensing sheet metal, wherein the sensor is fixed on the substrate; the sensing sheet metal is used to be arranged on one side of the chain, and the sensing sheet metal is used to provide sensing with the sensor, or the sensing sheet metal is used to be driven by the gravity of the chain and separate from the sensing of the sensor when the chain falls.

[0021] Under normal conditions, the induction sheet metal and the sensor can sense each other, and the sensor senses the induction sheet metal; when the chain breaks, the chain falls and hits the sensor, causing the induction sheet metal to be out of sensing and the sensor to detect the chain break. The sensing state of the induction sheet metal and the sensor will not be affected by the surrounding noise, and the structural principle is simple, and it can respond accurately and quickly, quickly judging the chain break, thereby improving the safety and efficiency of construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 An isometric view of a first structure of a chain breakage detection device provided in this embodiment from a first viewing angle;

[0024] Figure 2 for Figure 1 An exploded view of the chain break detection device shown;

[0025] Figure 3 An isometric view of a first structure of the chain breakage detection device provided in this embodiment from a second viewing angle;

[0026] Figure 4 An isometric view of a second structure of the chain breakage detection device provided in this embodiment from a first viewing angle;

[0027] Figure 5 for Figure 4 A partial enlarged view of middle A;

[0028] Figure 6 A partial structural diagram of a second structure of the chain breakage detection device provided in this embodiment;

[0029] Figure 7 for Figure 6 A partial enlarged view of B.

[0030] Icons: 10-chain breakage detection device; 100-base plate; 200-sensor; 300-induction sheet metal; 310-first sheet metal strip; 320-second sheet metal strip; 400-linked sheet metal; 401-weight reduction hole; 410-adaptation base plate; 420-weight block; 500-installation base plate; 600-protective cover; 610-avoidance port; 700-magnetic suction component; 800-chain. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0032] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0034] In the description of the present utility model, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the accompanying drawings, or is the orientation or position relationship in which the utility model product is usually placed when used. It is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present utility model.

[0035] In addition, the terms “first”, “second”, etc., if used, are merely used to distinguish between the descriptions and should not be understood as indicating or implying relative importance.

[0036] It should be noted that, in the absence of conflict, the features in the embodiments of the present invention may be combined with each other.

[0037] Combine the following Figures 1 to 7 The chain breakage detection device 10 provided in this embodiment is described in detail.

[0038] Please refer to Figures 1 to 7 An embodiment of the utility model provides a chain breakage detection device 10, including a substrate 100, a sensor 200 and a sensing sheet metal 300, wherein the sensor 200 is fixed on the substrate 100; the sensing sheet metal 300 is used to be arranged on one side of the chain 800, and the sensing sheet metal 300 is used to provide sensing with the sensor 200, or the sensing sheet metal 300 is used to be driven by the gravity of the chain 800 when the chain 800 falls and is separated from the sensing with the sensor 200.

[0039] It should be noted that the method of "sensing with the sensor 200" in the text can be that the sensing sheet metal 300 contacts the sensor 200 to generate a sensing signal, or that the sensing sheet metal 300 approaches the sensor 200 to generate a sensing signal, as long as the sensor 200 can generate a sensing signal by moving the position of the sensing sheet metal 300. Similarly, "separation sensing" can be that the sensing sheet metal 300 and the sensor 200 are physically separated to achieve sensing separation, or that the physical distance between the sensing sheet metal 300 and the sensor 200 is increased to achieve sensing separation of the sensor 200.

[0040] In the initial state, the sensing sheet metal 300 and the sensor 200 maintain a good sensing state, and the signal output by the sensor 200 indicates that the chain 800 is in good condition. The chain 800 breaks, and the broken chain 800 pieces fall down due to gravity, causing the sensing sheet metal 300 to be forced to separate from the sensing of the sensor 200, and the sensing state of the sensing sheet metal 300 and the sensor 200 is destroyed. At this time, the signal output by the sensor 200 indicates that the chain 800 is broken.

[0041] After the chain 800 breaks, it falls due to gravity, causing the sensing sheet metal 300 and the sensor 200 to be separated from the sensing state, thereby detecting the breakage of the chain 800. The sensing state of the sensing sheet metal 300 and the sensor 200 will not be affected by the surrounding environmental noise, and the structural principle is simple, and it can respond accurately and quickly, and quickly judge whether the chain 800 is broken, thereby improving the safety and efficiency of the construction.

[0042] Reference Figures 1 to 7 In this embodiment, the chain breakage detection device 10 also includes a linkage sheet metal 400; the sensing sheet metal 300 is fixed to the linkage sheet metal 400, and the linkage sheet metal 400 is correspondingly arranged below the chain 800. The linkage sheet metal 400 is used to drive the sensing sheet metal 300 to be separated from the sensor 200 by the gravity of the chain 800 when the chain 800 falls.

[0043] The linkage sheet metal 400 is correspondingly arranged below the chain 800 . When the chain 800 falls downward due to the breakage and hits the linkage sheet metal 400 , the linkage sheet metal 400 is driven by the force to move the sensing sheet metal 300 , thereby breaking away from the sensing of the sensor 200 .

[0044] Reference Figures 1 to 7 In this embodiment, the sensing sheet metal 300 is fixed at an angle to the linkage sheet metal 400. The linkage sheet metal 400 is used to correspond to the position of the chain 800 and directly respond to the breakage of the chain 800. The sensing sheet metal 300 is used to correspond to the position of the sensor 200 and is used to sense or decouple from the sensor 200 under the linkage influence of the linkage sheet metal 400. The sensing sheet metal 300 is fixed at an angle to the linkage sheet metal 400, and the movement or rotation of the linkage sheet metal 400 can drive the sensing sheet metal 300 to make a corresponding action so as to decouple from the sensor 200.

[0045] Reference Figure 1 , Figure 2 and Figure 3 In this embodiment, the chain break detection device 10 further includes a mounting base plate 500 and an adapter base plate 410; the mounting base plate 500 is fixed to the base plate 100; the linkage sheet metal 400 is fixed to the adapter base plate 410 at an angle, and the connection between the linkage sheet metal 400 and the adapter base plate 410 is rotatably connected to the mounting base plate 500; the sensing sheet metal 300 is fixed to the adapter base plate 410, and the linkage sheet metal 400 is used to be driven to rotate by the gravity of the chain 800 to drive the sensing sheet metal 300 to rotate, thereby disconnecting the sensing from the sensor 200. Specifically, the adapter base plate 410 and the linkage sheet metal 400 are integrally formed.

[0046] The sensing sheet metal 300 is fixed to the linkage sheet metal 400 through the transfer base plate 410, the transfer base plate 410 is fixed to the linkage sheet metal 400, and the sensing sheet metal 300 is fixed to the transfer base plate 410. The linkage sheet metal 400 and the transfer base plate 410 are rotatably connected to the mounting base plate 500 to form a lever structure. When the linkage sheet metal 400 is hit by the falling chain 800, the linkage sheet metal 400 rotates downward, thereby driving the transfer base plate 410 and the sensing sheet metal 300 to rotate upward, thereby disconnecting from the sensor 200. In the initial state, the sensor 200 is set below the sensing sheet metal 300, and the torque of the sensing sheet metal 300 and the transfer base plate 410 is greater than that of the linkage sheet metal 400. The sensing sheet metal 300 and the transfer base plate 410 have a downward rotation movement trend, and the bottom of the sensing sheet metal 300 is sensed by the sensor 200.

[0047] Reference Figure 1 , Figure 2 and Figure 3 In this embodiment, the sensing sheet metal 300 includes a first sheet metal strip 310 and a second sheet metal strip 320 fixed at an angle; the first sheet metal strip 310 is fixed on the adapter base plate 410, and the second sheet metal strip 320 is used for sensing or disconnecting with the sensor 200.

[0048] The first sheet metal strip 310 and the second sheet metal strip 320 are in an L-shaped structure, the first sheet metal strip 310 is transversely fixed on the adapter base plate 410, and the end of the second sheet metal strip 320 away from the first sheet metal strip 310 is used for sensing or disconnecting sensing with the sensor 200. It is made of sheet metal bending and welding, which is low in cost and economical and practical.

[0049] Reference Figure 1 , Figure 2 and Figure 3 In this embodiment, the chain breakage detection device 10 further includes a protective cover 600; the protective cover 600 is fixed on the substrate 100, and the protective cover 600 is arranged on the outside of the sensor 200, and the protective cover 600 is provided with an avoidance opening 610, and the avoidance opening 610 is used for allowing the second sheet metal bar 320 to extend therein, and for avoiding the rotation of the second sheet metal bar 320.

[0050] The protective cover 600 is fixed to the outside of the sensor 200 to protect the sensor 200. The avoidance opening 610 is provided on the side of the protective cover 600 close to the sensing sheet metal 300, and the end of the second sheet metal strip 320 away from the first sheet metal strip 310 extends into the protective cover 600 through the avoidance opening 610. The second sheet metal strip 320 is driven by the linkage sheet metal 400 to tilt upward, and the avoidance opening 610 can avoid the second sheet metal strip 320 from rotating upward.

[0051] Reference Figure 1 , Figure 2 and Figure 3 In this embodiment, the linkage sheet metal 400 is provided with a plurality of weight-reducing holes 401 ; a weight block 420 is provided on the adapter base plate 410 , and the weight block 420 has the function of pushing the sensing sheet metal 300 to rotate downward so as to sense the movement trend of the sensor 200 .

[0052] The linkage sheet metal 400 is light in weight, while the adapter base plate 410, the weight block 420 and the sensing sheet metal 300 are heavy. The adapter base plate 410, the weight block 420 and the sensing sheet metal 300 rotate downward under the action of gravity and sense the sensor 200, while the linkage sheet metal 400 tilts upward. When the linkage sheet metal 400 is hit by the broken chain 800, the linkage sheet metal 400 rotates downward, and the sensing sheet metal 300 rotates upward, and loses the sense from the sensor 200.

[0053] Reference Figure 4 , Figure 5 , Figure 6 and Figure 7In this embodiment, the substrate 100 is fixed on one side of the chain 800; the chain breakage detection device 10 also includes a magnetic suction component 700; the linkage sheet metal 400 is adsorbed and fixed to the substrate 100 through the magnetic suction component 700, so that the sensing sheet metal 300 and the sensor 200 can sense each other, or the linkage sheet metal 400 is used to separate from the substrate 100 under the action of the gravity of the falling chain 800.

[0054] Specifically, there are at least two substrates 100 , a space for installing the chain 800 is formed between the two substrates 100 , and the linkage sheet metal 400 is simultaneously adsorbed to the two substrates 100 through the magnetic attraction component 700 .

[0055] In the initial state, the linkage sheet metal 400 is fixed to the substrate 100 by adsorption through the magnetic suction component 700, and the sensing sheet metal 300 on the linkage sheet metal 400 senses the sensor 200; the chain 800 breaks and hits the linkage sheet metal 400, the linkage sheet metal 400 overcomes the magnetic suction force and separates from the substrate 100, and the sensing sheet metal 300 and the sensor 200 are separated from sensing.

[0056] Reference Figure 4 , Figure 5 , Figure 6 and Figure 7 In this embodiment, the substrate 100 is arranged vertically, and the sensor 200 is fixed on one side of the substrate 100; the sensing sheet metal 300 is vertically fixed on the linkage sheet metal 400, and the linkage sheet metal 400 is used to be adsorbed and fixed with the substrate 100 horizontally.

[0057] The substrate 100 is arranged vertically, the linkage sheet metal 400 is in a horizontal state when adsorbed to the substrate 100 , and the sensing sheet metal 300 is perpendicular to the linkage sheet metal 400 and senses with the sensor 200 .

[0058] Reference Figure 4 , Figure 5 , Figure 6 and Figure 7 In this embodiment, the magnetic attraction component 700 includes a first magnetic attraction component and a second magnetic attraction component; the first magnetic attraction component is fixed to the bottom of the substrate 100, and the second magnetic attraction component is fixed to the surface of the linkage sheet metal 400, and the first magnetic attraction component can be adsorbed and fixed to the second magnetic attraction component.

[0059] The number of magnetic attraction components 700 is at least one group, and the first magnetic attraction component and the second magnetic attraction component are fixed to the substrate 100 and the linkage sheet metal 400 respectively, and the linkage sheet metal 400 is adsorbed and fixed to the substrate 100 by the adsorption and fixation of the first magnetic attraction component and the second magnetic attraction component. The linkage sheet metal 400 is subjected to force, overcomes the adsorption force between the first magnetic attraction component and the second magnetic attraction component, and is separated from the substrate 100.

[0060] Reference Figures 1 to 7According to a chain breakage detection device 10 provided in this embodiment, the working principle of the chain breakage detection device 10 is:

[0061] The chain breakage detection device 10 is installed as a whole below the chain 800 to detect the breakage of the chain 800. Due to the design of this structure, it can not only be used at the chain 800 to detect the breakage of the chain 800, but also can be installed at other locations. As long as a heavy object falls and hits the linkage sheet metal 400, the alarm function can be realized, so this device is not only economical, but also has a wide range of applications.

[0062] In the first embodiment, the base plate 100 and the mounting base plate 500 are used as bases and installed in the actual use position. The adapter base plate 410 is installed on the mounting base plate 500, and the linkage sheet metal 400 and the adapter base plate 410 are installed on the mounting base plate 500 through the holes on the mounting base plate 500 to form a seesaw-like structure. Due to the design of the linkage sheet metal 400, many weight-reducing holes 401 are opened on the head, and the adapter base plate 410 is welded with a weight block 420 to realize a "light head and heavy feet" design. After installation, in a static state, the linkage sheet metal 400 will tilt up, and the adapter base plate 410 will be at the bottom; in actual use, when the chain 800 breaks and falls down, pressing the head of the linkage sheet metal 400, the head of the linkage sheet metal 400 will be pressed down through the fulcrum formed by the pin on the installation base plate 500, and the adapter base plate 410 will tilt up; at this time, the sensing sheet metal 300 is installed on the adapter base plate 410, and then the sensor 200 is installed on the substrate 100 to detect the existence of the sensing sheet metal 300; the tail of the linkage sheet metal 400 lifts up with the sensing sheet metal 300, the sensing sheet metal 300 and the sensor 200 are separated from the sensing, and the sensor 200 alarms, thereby realizing the detection of whether a heavy object has been dropped.

[0063] In the second embodiment, a linkage sheet metal 400 is installed under the chain 800 through magnet attraction, and a sensing sheet metal 300 is fixed to the linkage sheet metal 400. A sensor 200 that cooperates with the sensing sheet metal 300 is installed on the base plate 100. When the chain 800 is in a normal state, the sensor 200 senses the sensing sheet metal 300; when the chain 800 breaks, the chain 800 falls and hits the linkage sheet metal 400. The linkage sheet metal 400 is impacted by the chain 800, overcomes the magnetic force of the magnet and falls relative to the base plate 100, thereby causing the sensing sheet metal 300 to be out of induction with the sensor 200, and the sensor 200 alarms. The linkage sheet metal 400 here can be a protective cover for a sprocket that cooperates with the chain 800, and the impact force of the chain 800 falling on the linkage sheet metal 400 is greater than the magnet adsorption force.

[0064] The chain breakage detection device 10 provided in this embodiment has at least the following advantages:

[0065] Under normal conditions, the sensing sheet metal 300 senses the sensor 200, and the sensor 200 senses the sensing sheet metal 300; when the chain 800 breaks, the chain 800 falls and breaks down, causing the sensing sheet metal 300 and the sensor 200 to lose sensing, thereby detecting the breakage of the chain 800. The structure is simple, and it can respond accurately and quickly, and quickly determine whether the chain 800 is broken, thereby improving the safety and efficiency of construction; the cost is low and the use is economical; the detection principle is an alarm when a heavy object falls, so it can be used in many different scenarios, with strong practicality and compatibility.

[0066] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A chain breakage detection device, characterized in that: include: substrate(100); A sensor (200), wherein the sensor (200) is fixed on the substrate (100); and a sensing sheet metal (300), wherein the sensing sheet metal (300) is used to be arranged on one side of the chain (800), the sensing sheet metal (300) is used to provide sensing with the sensor (200), or the sensing sheet metal (300) is used to be driven by the gravity of the chain (800) and to be separated from the sensing with the sensor (200) when the chain (800) falls.

2. The chain breakage detection device according to claim 1, characterized in that: The chain breakage detection device further comprises a linkage sheet metal (400); the sensing sheet metal (300) is fixed to the linkage sheet metal (400), and the linkage sheet metal (400) is correspondingly arranged below the chain (800); the linkage sheet metal (400) is used to drive the sensing sheet metal (300) to be separated from the sensor (200) by the gravity of the chain (800) when the chain (800) falls.

3. The chain breakage detection device according to claim 2, characterized in that: The induction sheet metal (300) and the linkage sheet metal (400) are fixed at an angle.

4. The chain breakage detection device according to claim 3, characterized in that: The chain breakage detection device further comprises a mounting base plate (500) and an adapter base plate (410); the mounting base plate (500) is fixed to the base plate (100); the linkage sheet metal (400) is fixed to the adapter base plate (410) at an angle, and the connection between the linkage sheet metal (400) and the adapter base plate (410) is rotatably connected to the mounting base plate (500); the sensing sheet metal (300) is fixed to the adapter base plate (410), and the linkage sheet metal (400) is used to be driven to rotate by the gravity of the chain (800) to drive the sensing sheet metal (300) to rotate, thereby disconnecting the sensing from the sensor (200).

5. The chain breakage detection device according to claim 4, characterized in that: The sensing sheet metal (300) comprises a first sheet metal strip (310) and a second sheet metal strip (320) fixed at an angle; the first sheet metal strip (310) is fixed on the adapter base plate (410), and the second sheet metal strip (320) is used for sensing or disconnecting from the sensor (200).

6. The chain breakage detection device according to claim 5, characterized in that: The chain breakage detection device further comprises a protective cover (600); the protective cover (600) is fixed on the substrate (100), and the protective cover (600) is arranged outside the sensor (200); the protective cover (600) is provided with an escape opening (610), and the escape opening (610) is used for allowing the second sheet metal strip (320) to extend therein, and for avoiding the rotation of the second sheet metal strip (320).

7. The chain breakage detection device according to claim 4, characterized in that: The linkage sheet metal (400) is provided with a plurality of weight-reducing holes (401); a weight block (420) is provided on the adapter bottom plate (410), and the weight block (420) has the function of pushing the sensing sheet metal (300) to rotate downward so as to sense a movement trend with the sensor (200).

8. The chain breakage detection device according to claim 2 or 3, characterized in that: The base plate (100) is fixed on one side of the chain (800); the chain break detection device further comprises a magnetic attraction component (700); the linkage sheet metal (400) is fixed to the base plate (100) by adsorption via the magnetic attraction component (700), so that the sensing sheet metal (300) and the sensor (200) can sense each other, or the linkage sheet metal (400) is used to separate from the base plate (100) under the action of the gravity of the falling chain (800).

9. The chain breakage detection device according to claim 8, characterized in that: The substrate (100) is arranged vertically, and the sensor (200) is fixed on one side of the substrate (100); the sensing sheet metal (300) is fixed vertically on the linkage sheet metal (400), and the linkage sheet metal (400) is used to be adsorbed and fixed to the substrate (100) in a horizontal manner.

10. The chain breakage detection device according to claim 9, characterized in that: The magnetic attraction component (700) comprises a first magnetic attraction component and a second magnetic attraction component; the first magnetic attraction component is fixed to the bottom of the substrate (100), and the second magnetic attraction component is fixed to the surface of the linkage sheet metal (400), and the first magnetic attraction component can be adsorbed and fixed to the second magnetic attraction component.

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