Mining chain stretching detection device

Abstract

The invention provides a mining chain stretching detection device, and belongs to the technical field of mining chain production, the mining chain stretching detection device comprises a detection equipment body, a driving assembly is arranged in the detection equipment body, stretching assemblies are arranged on both sides of the inner wall of the detection equipment body, and a chain body is arranged between the two stretching assemblies; when the chain body is stretched, the chain body can be placed at the top end of the bearing seat, the protective cover can be closed by starting the motor body, and meanwhile the chain body can be driven to descend and limited under the mutual cooperation of the driving assembly and the stretching assembly; the bearing seat is located above the two sets of abutting blocks before stretching and after stretching, the clamping device can transfer and clamp the bearing seat, the stretching assembly is arranged, the purpose of automatically limiting the chain body can be achieved, the positioning efficiency of stretching detection is greatly improved, and therefore the effect of improving the production efficiency is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of mining chain production, and in particular to a mining chain stretching detection device. Background Art

[0002] Chains are generally metal links or rings, mostly used for mechanical transmission and traction. Chain-shaped objects used to block traffic passages (such as in streets, rivers or harbor entrances), and chains used for mechanical transmission.

[0003] There are chain stretching detection devices in the prior art. For example, Chinese invention patent CN116429583B discloses a mining chain stretching detection device, which includes a workbench, which is installed on the ground through supporting legs. A square groove is opened at the upper end of the workbench, and a guide slide is installed in the square groove. A chain is placed on the workbench, a stretching detection mechanism is installed on the workbench, and a marking mechanism is installed on the workbench; the stretching detection mechanism includes a moving frame, a lifting frame, a fixed rod, a pushing frame, a moving rod, and a pressure sensor; the marking mechanism includes a spray paint can and a forked tube.

[0004] However, the above patent still has certain shortcomings. At the end of the production of the mining chain, both ends of the chain need to be stretched and tested. During the stretching process of the mining chain, the chain needs to be placed on the top of the base, and the stretching piece needs to be plugged into the end of the chain and the position of the stretching piece needs to be adjusted to ensure that the stretching piece does not fall off during the stretching process. This process is relatively cumbersome and it is difficult to carry out the preparatory work before chain stretching at the same time, which leads to an extension of the production inspection time, thereby reducing production efficiency.

[0005] Therefore, the prior art is in urgent need of a mining chain stretching detection device. Summary of the invention

[0006] The object of the present invention is to provide a mining chain stretching detection device to solve the problem of low production efficiency in the prior art.

[0007] In order to solve the above technical problems, the present invention specifically provides the following technical solutions: A mining chain stretching detection device comprises a detection device body, a driving assembly is arranged inside the detection device body, stretching assemblies are arranged on both sides of the inner wall of the detection device body, and a chain body is arranged between the two stretching assemblies; The stretching assembly includes two stretching seats that slide on the inner wall of the detection equipment body, the inner walls of the two stretching seats are fixed with internal fixed seats, two abutments are fixed on one side of the internal fixed seats, and the two abutments are fixed with internal fixed plates on the side close to the internal fixed seats, and a group of arc plates are fixed on the top of the two internal fixed plates, a slide plate is sliding on one side of the outer wall of the stretching seat, a hinge fixedly connected to the slide plate is inserted into the inner wall of the stretching seat, and the hinge is slidably connected to the stretching seat, a rotating rod is rotated on one side of the hinge, and a slide plate slidably connected to the abutments is rotated on the top of the rotating rod, a stretching piece is slidably provided on the top of the two internal fixed plates, a sliding rod is fixed on the bottom end of the stretching piece, and the sliding rod is slidably connected to the slide plate, a telescopic rod is fixed on the side of the slide plate away from the slide, and the other end of the telescopic rod is fixedly connected to the inner wall of the internal fixed seat.

[0008] As a preferred embodiment of a mining chain stretching detection device of the present invention, the driving assembly includes a protective cover, a motor mounting tube, a rotating shaft body and a threaded tube. The protective cover slides on the top of the detection equipment body, a threaded rod is fixed on the top of the rotating shaft body, the motor mounting tube is fixed to the bottom of the detection equipment body, a motor body is installed inside the motor mounting tube, and the motor body and the rotating shaft body are connected by a coupling.

[0009] As a preferred embodiment of a mining chain stretching detection device of the present invention, a connector is fixed on the outside of the threaded barrel, the connector is plugged into the inside of the motor mounting barrel, a plug-in hole matching the connector is opened on the top of the motor mounting barrel, the threaded rod is plugged into the inside of the threaded barrel, and the threaded barrel and the threaded rod are threadedly matched, a socket is fixed on the top of the threaded barrel, magnetic extension rods are fixed on both sides of the socket, and the two magnetic extension rods are respectively in contact with the tops of the two slides.

[0010] As a preferred embodiment of the mining chain stretching detection device of the present invention, a guide groove matching the hinge is provided on the outer wall of the stretching seat on one side close to the hinge, a hinge rod is rotated at the top of the rotating rod, and the hinge rod is fixedly connected to the slide plate, and a guide groove matching the hinge rod is provided on one side of the inner fixed seat.

[0011] As a preferred embodiment of a mining chain stretching detection device of the present invention, two hydraulic rods are installed on the inner wall of the detection equipment body, and the output ends of the two hydraulic rods are respectively fixedly connected to the outer walls of the two stretching seats, and one end of the chain body is inserted between the two blocks.

[0012] As a preferred embodiment of a mining chain stretching detection device of the present invention, a plurality of pairs of guide wheels are rotatably arranged at the top of the receiving seat, and the plurality of pairs of guide wheels are equidistantly distributed, guide grooves are provided on both sides of the top of the receiving seat, and a limit groove matching the chain body is provided at the top of the receiving seat.

[0013] As a preferred solution of the mining chain stretching detection device of the present invention, a control panel is provided on the outside of the detection device body.

[0014] As a preferred embodiment of a mining chain stretching detection device of the present invention, the two groups of arc plates are both made of rubber material, and both groups of arc plates are provided with smooth parts inside, and the smooth parts are made of iron, the spacing length between the two blocks is greater than the cross-sectional width of the chain body, and a straight sliding groove matching the sliding rod is provided at the top of the rotating rod.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. When the chain body is stretched, the chain body can be placed on the top of the receiving seat. By starting the motor body, the driving assembly and the stretching assembly can cooperate with each other to drive the chain body down and limit it at the same time. The receiving seat is located above the two groups of blocks before and after stretching, which is helpful for the clamping device to transport and clamp it. The setting of the stretching assembly can achieve the purpose of automatically limiting the chain body. The chain can be stretched and positioned without additional operation, which greatly improves the positioning efficiency of the stretching detection, thereby achieving the effect of improving production efficiency. 2. After the chain stretching test, if the chain body breaks, the length of both ends will far exceed the original position, which will cause the stretched end of the chain to fall off. When the chain falls, it can slide along the guide groove to the inside of the classification box under the action of its own gravity, thereby achieving the effect of automatic classification, thereby improving the detection efficiency of the chain body. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the implementation methods of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the implementation methods or the description of the prior art. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0017] Figure 1 It is an overall stereogram of the detection device of the present invention; Figure 2 It is a schematic diagram of the local structure of the detection equipment of the present invention; Figure 3 It is a top view of the structure of the detection device of the present invention; Figure 4 It is a schematic diagram of the connection structure between the threaded rod and the motor mounting cylinder of the present invention; Figure 5 It is a schematic diagram of the connection structure between the receiving seat and the stretching seat of the present invention; Figure 6 For the present invention Figure 5A partial enlarged view of middle A; Figure 7 The structure of the tensile component of the present invention is schematically shown in FIG. Figure 1 ; Figure 8 The structure of the tensile component of the present invention is schematically shown in FIG. Figure 2 ; Fig. 9 This is a cross-sectional view of the formal structure of the receiving seat of the present invention; Fig.10 It is a schematic diagram of the receiving seat structure of the present invention.

[0018] In the figure: 1. Testing equipment body; 2. Driving assembly; 21. Protective cover; 22. Motor mounting tube; 23. Rotating shaft body; 231. Threaded rod; 24. Threaded tube; 241. Connector; 25. Socket; 251. Magnetic extension rod; 252. Guide wheel; 253. Guide groove; 3. Stretching assembly; 31. Stretching seat; 311. Internal fixing seat; 312. Block; 313. Arc plate; 314. Internal fixing plate; 32. Slide plate; 33. Hinge; 34. Rotating rod; 35. Slide plate; 36. Stretching member; 361. Slide rod; 37. Telescopic rod; 4. Chain body. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. 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.

[0020] The following first describes the concepts involved in the present application in conjunction with the accompanying drawings. It should be noted that the following description of each concept is only to make the content of the present application easier to understand, and does not limit the scope of protection of the present application; at the same time, the embodiments and features in the embodiments of the present application can be combined with each other in the absence of conflict. The present application will be described in detail with reference to the accompanying drawings and in conjunction with the embodiments.

[0021] like Figures 1 to 10 As shown, according to one aspect of the present invention, a mining chain stretching detection device is provided, comprising a detection device body 1, a driving assembly 2 is arranged inside the detection device body 1, stretching assemblies 3 are arranged on both sides of the inner wall of the detection device body 1, and a chain body 4 is arranged between the two stretching assemblies 3; The stretching assembly 3 includes two stretching seats 31 sliding on the inner wall of the detection device body 1, the inner walls of the two stretching seats 31 are fixed with internal fixing seats 311, one side of the internal fixing seat 311 is fixed with two abutting blocks 312, the two abutting blocks 312 are fixed with internal fixing plates 314 near the inner fixing seat 311, and the tops of the two internal fixing plates 314 are fixed with a group of arc plates 313, one side of the outer wall of the stretching seat 31 is slid with a slide plate 32, and the inner wall of the stretching seat 31 is plugged with a hinge fixedly connected to the slide plate 32 The hinged member 33 is slidably connected with the stretching seat 31, a rotating rod 34 is rotated on one side of the hinged member 33, a sliding groove plate 35 slidably connected with the stop block 312 is rotated on the top of the rotating rod 34, a stretching member 36 is slidably connected with the top of the two inner fixed plates 314, a sliding rod 361 is fixed on the bottom of the stretching member 36, and the sliding rod 361 is slidably connected with the sliding groove plate 35, a telescopic rod 37 is fixed on the side of the sliding groove plate 35 away from the slide plate 32, and the other end of the telescopic rod 37 is fixedly connected with the inner wall of the inner fixed seat 311; The driving assembly 2 includes a protective cover 21, a motor mounting tube 22, a rotating shaft body 23 and a threaded tube 24. The protective cover 21 slides on the top of the detection equipment body 1. A threaded rod 231 is fixed on the top of the rotating shaft body 23. The motor mounting tube 22 is fixed to the bottom of the detection equipment body 1. The motor body is installed inside the motor mounting tube 22, and the motor body and the rotating shaft body 23 are connected by a coupling.

[0022] A connector 241 is fixed to the outside of the threaded barrel 24, and the connector 241 is plugged into the inside of the motor mounting barrel 22. A plug hole matching the connector 241 is opened at the top of the motor mounting barrel 22. The threaded rod 231 is plugged into the inside of the threaded barrel 24, and the threaded barrel 24 and the threaded rod 231 are threadedly matched. A socket 25 is fixed to the top of the threaded barrel 24, and magnetic extension rods 251 are fixed on both sides of the socket 25, and the two magnetic extension rods 251 are respectively in contact with the tops of the two slides 32.

[0023] A guide groove matching the hinge 33 is provided on the outer wall of the stretching seat 31 on one side close to the hinge 33. A hinge rod is rotated at the top of the rotating rod 34, and the hinge rod is fixedly connected to the slide plate 35. A guide groove matching the hinge rod is provided on one side of the inner fixed seat 311.

[0024] The two groups of arc plates 313 are made of rubber material, and both groups of arc plates 313 are provided with smooth parts inside, and the smooth parts are made of iron. The spacing length between the two blocks 312 is greater than the cross-sectional width of the chain body 4. A straight sliding groove matching the sliding rod 361 is provided at the top of the rotating rod 34. Two hydraulic rods are installed on the inner wall of the detection equipment body 1, and the output ends of the two hydraulic rods are respectively fixedly connected to the outer walls of the two stretching seats 31, and one end of the chain body 4 is inserted between the two blocks 312.

[0025] When the chain body 4 needs to be stretched, the chain body 4 can be placed on the top of the receiving seat 25 through a clamping device. At this time, the motor body inside the motor mounting tube 22 is started, and the shaft body 23 can be driven to rotate under the connection of the coupling, and the threaded rod 231 fixed to the top of the shaft body 23 can rotate synchronously. Since the threaded rod 231 is threadedly connected to the threaded tube 24, and because the outer wall of the threaded tube 24 is fixed with a plug-in part 241 plugged into the motor mounting tube 22, the rotation of the threaded rod 231 can drive the threaded tube 24 to gradually approach the motor mounting tube 22 and drive the receiving seat 25 to descend. The descent of the receiving seat 25 can drive the two magnetic extension rods 251 to descend, so that the chain The chain body 4 descends synchronously, and after the chain body 4 descends, its two ends can be respectively inserted into the two sets of abutment blocks 312. With the continuous rotation of the threaded rod 231, the receiving seat 25 can be driven to move below the chain body 4 and separate from the chain body 4. At this time, the descent of the magnetic extension rod 251 can drive the slide plate 32 to descend, and the sliding of the slide plate 32 can drive the hinge 33 to slide, and then push the rotating rod 34 rotatably connected to the hinge 33 to rotate around the contact position with the slide plate 35. When the hinge 33 slides to a position flush with the guide groove, the rotating rod 34 can push the slide plate 35 to slide. At this time, the slide plate 35 slides to the farthest position from the hinge 33. The chain body 4 can move inside the slide plate 35, and the slide plate 35 can pull the stretching member 36 to slide between the two groups of arc plates 313, and finally a gap will appear between the two groups of abutments 312. At the same time, the chain body 4 can move between the two abutments 312. As the hinge 33 continues to slide, the stretching member 36 can be driven to rotate in the opposite direction. At this time, one end of the stretching member 36 can be plugged into the chain body 4. When the hinge 33 slides to the bottom of the guide groove, the stretching member 36 can be driven to be completely plugged into the chain body 4. At this time, the two stretching seats 31 can be pulled away from each other by starting the two hydraulic rods. In this process, one side of the outer wall of the stretching member 36 is in close contact with the inner wall of the chain body 4, and the stretching member The other side of the outer wall 36 is in close contact with the outer walls of the two stop blocks 312, so that the chain body 4 can be stretched. When the stretching is completed, the two hydraulic rods respectively drive the two reset stretching seats 31 to reset, and then start the motor body inside the motor mounting tube 22 to drive the rotating shaft body 23 to rotate in the opposite direction. With the cooperation of the driving component 2 and the stretching component 3, the two receiving seats 25 can be driven to rise, and at the same time, the two stretching members 36 can be driven to separate from the two ends of the chain body 4 respectively. The rising of the receiving seats 25 is convenient for the operator to observe, and then the chain body 4 can be clamped and transported by the clamping equipment, which greatly reduces the probability of the clamping equipment falling off during the clamping and transportation of the chain body 4.

[0026] In this embodiment, the top of the receiving seat 25 has multiple pairs of guide wheels 252 that rotate, and the multiple pairs of guide wheels 252 are equidistantly distributed. Guide grooves 253 are provided on both sides of the top of the receiving seat 25, and a limiting groove matching the chain body 4 is provided at the top of the receiving seat 25.

[0027] A control panel is arranged on the outside of the detection device body 1 , and a classification box is arranged on the bottom end of the inner wall of the detection device body 1 .

[0028] The two sets of arc plates 313 are both made of rubber, and both sets of arc plates 313 are provided with smooth parts inside, and the smooth parts are made of iron. The distance between the two blocks 312 is greater than the cross-sectional width of the chain body 4, and a straight sliding groove matching the sliding rod 361 is opened at the top of the rotating rod 34.

[0029] When the stretching is finished, if the chain body 4 breaks, the position of the chain body 4 at the top of the receiving seat 25 changes, and at this time, most of the two ends of the chain body 4 are completely exposed to the outside of the receiving seat 25. When the stretched end of the chain body 4 is separated from the stretching member 36, the broken chain body 4 can be driven to slide along the inclined surface of the guide groove 253 under the action of the gravity of the stretched end of the chain body 4 itself, and then fall into the classification box. At the same time, the setting of the guide wheel 252 can reduce the friction between the chain body 4 and the receiving seat 25, thereby achieving the effect of automatic classification.

[0030] The working principle of the device is as follows: the chain body 4 is placed on the top of the receiving seat 25 by a clamping device. At this time, only a small part of the two ends of the chain body 4 is exposed to the outside of the receiving seat 25. The motor body inside the motor mounting tube 22 can be started, and the shaft body 23 is driven to rotate under the connection of the coupling, and the threaded rod 231 fixed to the top of the shaft body 23 can rotate synchronously. Since the threaded rod 231 is threadedly connected with the threaded tube 24, and because the outer wall of the threaded tube 24 is fixed with a plug-in 241 plugged into the inside of the motor mounting tube 22, the rotation of the threaded rod 231 can drive the threaded tube 24 to gradually approach the motor mounting tube 22, and drive the receiving seat 25 to descend. The descent of the receiving seat 25 can drive the two magnetic extension rods 251 to descend, so that the chain body 4 The two ends of the chain body 4 can be synchronously lowered, and the lowering of the chain body 4 can make its two ends respectively inserted into the two sets of abutment blocks 312. With the continuous rotation of the threaded rod 231, the receiving seat 25 can be driven to move below the chain body 4 and separate from the chain body 4. At this time, the lowering of the magnetic extension rod 251 can drive the slide plate 32 to lower, and the sliding of the slide plate 32 can drive the hinge 33 to slide, and then push the rotating rod 34 rotatably connected to the hinge 33 to rotate around the contact position with the slide plate 35. When the hinge 33 slides to a position flush with the guide groove, the rotating rod 34 can push the slide plate 35 to slide. At this time, the slide plate 35 slides to the farthest position from the hinge 33. Since the sliding rod 361 slides inside the slide plate 35, the slide plate 35 can pull the tensile member 36 to slide between the two The two sets of arc-shaped plates 313 are arranged between the two sets of abutments 312, and the chain body 4 can be moved between the two abutments 312 at the same time. As the hinge 33 continues to slide, the stretching member 36 can be driven to rotate in the opposite direction. At this time, one end of the stretching member 36 can be inserted into the inside of the chain body 4. When the hinge 33 slides to the bottom of the guide groove, the stretching member 36 can be driven to be completely inserted into the inside of the chain body 4. At this time, the two stretching seats 31 can be pulled away from each other by starting the two hydraulic rods. In this process, one side of the outer wall of the stretching member 36 is in close contact with the inner wall of the chain body 4, and the other side of the outer wall of the stretching member 36 is in close contact with the outer walls of the two abutments 312, so that the chain body 4 can be stretched. When the stretching is completed, the two hydraulic rods respectively drive the two The stretching seat 31 is reset, and most of the two ends of the chain body 4 are now completely exposed to the outside of the receiving seat 25, and then the motor body inside the motor mounting tube 22 is started to drive the shaft body 23 to rotate in the opposite direction, and the two receiving seats 25 can be driven to rise under the cooperation of the driving component 2 and the stretching component 3, and the two stretching members 36 can be driven to separate from the two ends of the chain body 4 respectively. At this time, if the chain body 4 breaks, the position of the chain body 4 at the top of the receiving seat 25 changes. When the stretching end of the chain body 4 is separated from the stretching member 36, the broken chain body 4 can be driven to slide along the inclined surface of the guide groove 253 under the action of the gravity of the stretching end of the chain body 4, and then fall into the classification box. At the same time, the setting of the guide wheel 252,The friction between the chain body 4 and the receiving seat 25 can be reduced.

[0031] This article uses specific examples to illustrate the principles and implementation methods of this application. The description of the above embodiments is only used to help understand the method and its core ideas of this application. The above is only the preferred implementation method of this application. It should be pointed out that due to the limitations of textual expression and the objective existence of infinite specific structures, ordinary technicians in this technical field can make several improvements, modifications or changes without departing from the principles of this application, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the concept and technical solution of the invention to other occasions without improvement, should be regarded as the scope of protection of this application.

Claims

1. A mining chain tension detection device, comprising a detection device body (1), characterized in that: A driving component (2) is arranged inside the detection device body (1), stretching components (3) are arranged on both sides of the inner wall of the detection device body (1), and a chain body (4) is arranged between the two stretching components (3); The stretching assembly (3) comprises two stretching seats (31) sliding on the inner wall of the detection device body (1), the inner walls of the two stretching seats (31) are fixed with inner fixing seats (311), one side of the inner fixing seats (311) is fixed with two abutting blocks (312), the sides of the two abutting blocks (312) close to the inner fixing seats (311) are fixed with inner fixing plates (314), the tops of the two inner fixing plates (314) are fixed with a group of arc-shaped plates (313), one side of the outer wall of the stretching seat (31) is slid with a sliding plate (32), and the inner wall of the stretching seat (31) is plugged with a hinge fixedly connected to the sliding plate (32). (33), and the hinge (33) is slidably connected to the stretching seat (31), a rotating rod (34) is rotatably provided on one side of the hinge (33), and a sliding groove plate (35) slidably connected to the stop block (312) is rotatably provided on the top of the rotating rod (34), a stretching member (36) is slidably provided on the tops of the two inner fixed plates (314), a sliding rod (361) is fixed to the bottom end of the stretching member (36), and the sliding rod (361) is slidably connected to the sliding groove plate (35), a telescopic rod (37) is fixed to the side of the sliding groove plate (35) away from the slide plate (32), and the other end of the telescopic rod (37) is fixedly connected to the inner wall of the inner fixed seat (311).

2. A mining chain stretching detection device according to claim 1, characterized in that: The driving assembly (2) comprises a protective cover (21), a motor mounting cylinder (22), a rotating shaft body (23) and a threaded cylinder (24); the protective cover (21) slides on the top of the detection device body (1); a threaded rod (231) is fixed to the top of the rotating shaft body (23); the motor mounting cylinder (22) is fixed to the bottom of the detection device body (1); a motor body is mounted inside the motor mounting cylinder (22); and the motor body and the rotating shaft body (23) are connected via a coupling.

3. A mining chain stretching detection device according to claim 2, characterized in that: A plug-in component (241) is fixed to the outside of the threaded barrel (24), the plug-in component (241) is plugged into the inside of the motor mounting barrel (22), a plug-in hole matching the plug-in component (241) is provided at the top of the motor mounting barrel (22), the threaded rod (231) is plugged into the inside of the threaded barrel (24), and the threaded barrel (24) and the threaded rod (231) are threadedly matched, a receiving seat (25) is fixed to the top of the threaded barrel (24), magnetic extension rods (251) are fixed on both sides of the receiving seat (25), and the two magnetic extension rods (251) are respectively in contact with the tops of the two slide plates (32).

4. A mining chain stretching detection device according to claim 1, characterized in that: A guide groove matching the hinged member (33) is provided on an outer wall of one side of the stretching seat (31) close to the hinged member (33); a hinged rod is rotatably provided at the top end of the rotating rod (34), and the hinged rod is fixedly connected to the slide plate (35); and a guide groove matching the hinged rod is provided on one side of the inner fixed seat (311).

5. A mining chain stretching detection device according to claim 1, characterized in that: Two hydraulic rods are installed on the inner wall of the detection equipment body (1), and the output ends of the two hydraulic rods are respectively fixedly connected to the outer walls of the two stretching seats (31), and one end of the chain body (4) is inserted between the two abutment blocks (312).

6. A mining chain stretching detection device according to claim 3, characterized in that: The top of the receiving seat (25) is provided with a plurality of pairs of guide wheels (252) which are rotatably arranged, and the plurality of pairs of guide wheels (252) are equidistantly distributed. Both sides of the top of the receiving seat (25) are provided with guide grooves (253). The top of the receiving seat (25) is provided with a limit groove which matches the chain body (4).

7. A mining chain stretching detection device according to claim 1, characterized in that: A control panel is arranged on the outside of the detection device body (1).

8. A mining chain stretching detection device according to claim 1, characterized in that: The two groups of arc plates (313) are both made of rubber, and smooth parts are provided inside the two groups of arc plates (313), and the smooth parts are made of iron. The distance between the two stop blocks (312) is greater than the cross-sectional width of the chain body (4), and a straight sliding groove matching the sliding rod (361) is provided at the top end of the rotating rod (34).

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