A mine chain stretching detection device

Abstract

The present invention provides a tensile detection device for mining chains, belonging to the technical field of mining chain production. It includes a detection device body. A driving component is arranged inside the detection device body, and tensile components are arranged on both sides of the inner wall of the detection device body. A chain body is arranged between the two tensile components. When stretching the chain body, the chain body can be placed on the top of the receiving seat. By starting the motor body, the protective cover can be closed. At the same time, under the mutual cooperation of the driving component and the tensile component, the chain body can be driven to descend while being limited. The receiving seat is located above the two sets of abutting blocks both before and after stretching, which helps the clamping device to transfer and clamp it. The setting of the tensile component can achieve the purpose of automatically limiting the chain body, greatly improving the positioning efficiency of tensile detection, and thus achieving the effect of improving production efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of mining chain production, and particularly relates to a tensile testing device for mining chains. Background Art

[0002] A chain is generally a metal link or ring, and is mostly used for mechanical transmission and traction. A chain-shaped object used to block a traffic passage (such as in a street, a river or a harbor entrance), and a chain used for mechanical transmission.

[0003] There are chain tensile testing devices in the prior art. For example, Chinese invention patent CN116429583B discloses a tensile testing device for mining chains, which includes a workbench. The workbench is installed on the ground through support legs. A square groove is opened at the upper end of the workbench. A guiding slideway is installed in the square groove. A chain is placed on the workbench. A tensile testing mechanism is installed on the workbench. A marking mechanism is installed on the workbench. The tensile testing 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 paint spray can and a bifurcated pipe.

[0004] However, there are still certain deficiencies in the above patent. When the mining chain is produced, it is necessary to perform tensile testing on both ends of the chain. During the tensile process of the mining chain, the chain needs to be placed on the top of the base, and the tensile member needs to be inserted into the end of the chain, and the position of the tensile member needs to be adjusted to ensure that the tensile member will not fall off during the tensile process. This process is relatively cumbersome, and it is difficult to perform the preparatory work before the chain is stretched simultaneously, resulting in an extension of the production and testing time, thereby reducing the production efficiency.

[0005] Therefore, there is an urgent need for a tensile testing device for mining chains in the prior art. Summary of the Invention

[0006] The purpose of the present invention is to provide a tensile testing device for mining chains to solve the problem of low production efficiency in the prior art.

[0007] To solve the above technical problems, the present invention specifically provides the following technical solutions:

[0008] A tensile testing device for mining chains includes a detection device body. A driving component is arranged inside the detection device body. Tensile components are arranged on both sides of the inner wall of the detection device body. A chain body is arranged between the two tensile components;

[0009] The stretching component includes two stretching seats that slide on the inner wall of the detection device body. Inner fixing seats are fixed to the inner walls of both stretching seats. Two abutting blocks are fixed to one side of the inner fixing seat. Inner fixing plates are fixed to one side of the two abutting blocks close to the inner fixing seat. A set of arc-shaped plates are fixed to the tops of the two inner fixing plates. A sliding plate slides on one side of the outer wall of the stretching seat. A hinge member fixedly connected to the sliding plate is inserted into the inner wall of the stretching seat, and the hinge member is slidably connected to the stretching seat. A rotating rod rotates on one side of the hinge member. A chute plate that slidably connects with the abutting block rotates at the top of the rotating rod. A stretching member slides jointly on the tops of the two inner fixing plates. A sliding rod is fixed to the bottom end of the stretching member, and the sliding rod is slidably connected to the chute plate. A telescopic rod is fixed to the side of the chute plate away from the sliding plate, and the other end of the telescopic rod is fixedly connected to the inner wall of the inner fixing seat.

[0010] As a preferred solution of the mine chain stretching detection device of the present invention, the driving component includes a protective cover, a motor mounting cylinder, a rotating shaft body, and a threaded cylinder. The protective cover slides on the top of the detection device body. A threaded rod is fixed to the top of the rotating shaft body. The motor mounting cylinder is fixed to the bottom end of the detection device body. A motor body is installed inside the motor mounting cylinder, and the motor body is connected to the rotating shaft body through a coupling.

[0011] As a preferred solution of the mine chain stretching detection device of the present invention, a plug-in member is fixed to the outside of the threaded cylinder. The plug-in member is inserted into the inside of the motor mounting cylinder. A plug-in hole matching the plug-in member is opened at the top of the motor mounting cylinder. The threaded rod is inserted into the inside of the threaded cylinder, and the threaded cylinder is in threaded cooperation with the threaded rod. A receiving seat is fixed to the top of the threaded cylinder. Magnetic attraction extension rods are fixed to both sides of the receiving seat, and the two magnetic attraction extension rods are respectively in contact with the tops of the two sliding plates.

[0012] As a preferred solution of the mine chain stretching detection device of the present invention, a guiding through groove matching the hinge member is opened on the outer wall of the stretching seat close to the hinge member. A hinge rod rotates at the top of the rotating rod, and the hinge rod is fixedly connected to the chute plate. A guiding groove matching the hinge rod is opened on one side of the inner fixing seat.

[0013] As a preferred solution of the mine chain stretching detection device of the present invention, two hydraulic rods are installed on the inner wall of the detection device body, and the output ends of the two hydraulic rods are respectively fixedly connected to the outer walls of the two stretching seats. One end of the chain body is inserted between the two abutting blocks.

[0014] As a preferred solution of the mine chain stretching detection device of the present invention, multiple pairs of guiding wheels rotate on the top of the receiving seat, and the multiple pairs of guiding wheels are evenly distributed. Guiding grooves are opened on both sides of the top of the receiving seat. A limiting groove matching the chain body is opened on the top of the receiving seat.

[0015] As a preferred embodiment of the chain stretching detection device for mining use of the present invention, a control panel is provided on the outer side of the detection device body.

[0016] As a preferred embodiment of the chain stretching detection device for mining use of the present invention, both of the two arc-shaped plates are made of rubber, and smooth surface members are provided inside both of the two arc-shaped plates, and the smooth surface members are made of iron. The distance length between the two abutting blocks is greater than the cross-sectional width of the chain body, and a straight chute matching the sliding rod is opened at the top end of the rotating rod.

[0017] The present invention has the following beneficial effects compared with the prior art:

[0018] 1. When stretching the chain body of the present invention, the chain body can be placed on the top end of the receiving seat. By starting the motor body, under the mutual cooperation of the driving assembly and the stretching assembly, it is possible to drive the chain body to descend while limiting its position. And the receiving seat is located above the two abutting blocks both before and after stretching, which helps the clamping device to transfer and clamp it. The setting of the stretching assembly can achieve the purpose of automatically limiting the position of the chain body, and the chain can be stretched and positioned without additional operations, greatly improving the positioning efficiency of stretching detection, thereby achieving the effect of improving production efficiency;

[0019] 2. After the chain is stretched and detected by the present invention, if the chain body breaks, the lengths of its two ends are far beyond the original positions, which will cause the stretching end of the chain to fall. When the chain falls, it can slide along the guiding groove into the sorting box under the action of its own gravity, achieving the function of automatic sorting, thereby improving the detection efficiency of the chain body. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only exemplary, and for those of ordinary skill in the art, without creative efforts, other implementation drawings can also be obtained according to the provided drawings.

[0021] Figure 1 It is an overall three-dimensional view of the detection device of the present invention;

[0022] Figure 2 It is a partial structural schematic diagram of the detection device of the present invention;

[0023] Figure 3 It is a top view structural sectional view of the detection device of the present invention;

[0024] Figure 4 It is a structural schematic diagram of the connection between the threaded rod and the motor mounting cylinder of the present invention;

[0025] Figure 5 Schematic diagram of the connection structure between the receiving seat and the stretching seat of the present invention

[0026] Figure 6 of the present invention Figure 5 Partial enlarged view of A in

[0027] Figure 7 Schematic structure of the stretching component of the present invention Figure 1 ;

[0028] Figure 8 Schematic structure of the stretching component of the present invention Figure 2 ;

[0029] Figure 9 Formal structural sectional view of the receiving seat of the present invention

[0030] Figure 10 Schematic diagram of the structure of the receiving seat of the present invention

[0031] In the figure: 1. Detection equipment body; 2. Driving component; 21. Protective cover; 22. Motor mounting cylinder; 23. Rotating shaft body; 231. Threaded rod; 24. Threaded cylinder; 241. Plug-in component; 25. Receiving seat; 251. Magnetic attraction extension rod; 252. Guide wheel; 253. Guide groove; 3. Stretching component; 31. Stretching seat; 311. Inner fixing seat; 312. Block; 313. Arc plate; 314. Inner fixing plate; 32. Slide plate; 33. Hinge component; 34. Rotating rod; 35. Slide groove plate; 36. Stretching piece; 361. Slide rod; 37. Expansion rod; 4. Chain body Detailed implementation manners

[0032] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention

[0033] Next, the concepts involved in the present application will be described first in conjunction with the accompanying drawings. It should be noted here that the following descriptions of each concept are only for making the content of the present application easier to understand, and do not represent a limitation on the protection scope of the present application; at the same time, without conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments

[0034] As Figures 1 to 10As shown, according to an aspect of the present invention, a stretching detection device for mining chains is provided, including a detection device body 1. A driving component 2 is arranged inside the detection device body 1. Both sides of the inner wall of the detection device body 1 are provided with stretching components 3. A chain body 4 is arranged between the two stretching components 3;

[0035] The stretching component 3 includes two stretching seats 31 sliding on the inner wall of the detection device body 1. Inner fixing seats 311 are fixed on the inner walls of the two stretching seats 31. Two abutting blocks 312 are fixed on one side of the inner fixing seat 311. Inner fixing plates 314 are fixed on one side of the two abutting blocks 312 close to the inner fixing seat 311. A group of arc-shaped plates 313 are fixed on the tops of the two inner fixing plates 314. A sliding plate 32 slides on one side of the outer wall of the stretching seat 31. A hinge piece 33 fixedly connected to the sliding plate 32 is inserted into the inner wall of the stretching seat 31, and the hinge piece 33 is slidably connected to the stretching seat 31. A rotating rod 34 is rotated on one side of the hinge piece 33. A chute plate 35 slidably connected to the abutting block 312 is rotated at the top of the rotating rod 34. A stretching piece 36 slides jointly on the tops of the two inner fixing plates 314. A sliding rod 361 is fixed at the bottom end of the stretching piece 36, and the sliding rod 361 is slidably connected to the chute plate 35. A telescopic rod 37 is fixed on one side of the chute plate 35 away from the sliding plate 32, and the other end of the telescopic rod 37 is fixedly connected to the inner wall of the inner fixing seat 311;

[0036] The driving component 2 includes 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 at the top of the rotating shaft body 23. The motor mounting cylinder 22 is fixed at the bottom end of the detection device body 1. A motor body is installed inside the motor mounting cylinder 22, and the motor body is connected to the rotating shaft body 23 through a coupling.

[0037] A plug-in piece 241 is fixed on the outside of the threaded cylinder 24. The plug-in piece 241 is inserted into the inside of the motor mounting cylinder 22. A plug-in hole matching the plug-in piece 241 is opened at the top of the motor mounting cylinder 22. The threaded rod 231 is inserted into the inside of the threaded cylinder 24, and the threaded cylinder 24 is in threaded cooperation with the threaded rod 231. A receiving seat 25 is fixed at the top of the threaded cylinder 24. Magnetic attraction extension rods 251 are fixed on both sides of the receiving seat 25, and the two magnetic attraction extension rods 251 are respectively in contact with the tops of the two sliding plates 32.

[0038] A guiding through groove matching the hinge piece 33 is opened on the outer wall of the stretching seat 31 close to the hinge piece 33. A hinge rod is rotated at the top of the rotating rod 34, and the hinge rod is fixedly connected to the chute plate 35. A guiding groove matching the hinge rod is opened on one side of the inner fixing seat 311.

[0039] The two groups of arc-shaped plates 313 are made of rubber, and smooth surface parts are provided inside both groups of arc-shaped plates 313. The smooth surface parts are made of iron. The distance length between the two abutting blocks 312 is greater than the cross-sectional width of the chain body 4. A straight chute matching the sliding rod 361 is provided at the top end of the rotating rod 34. Two hydraulic rods are installed on the inner wall of the detection device 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. One end of the chain body 4 is inserted between the two abutting blocks 312.

[0040] When it is necessary to stretch the chain body 4, the chain body 4 can be placed on the top of the receiving seat 25 through the clamping device. At this time, the motor body inside the motor mounting cylinder 22 is started, and the rotation of the motor body can drive the rotation of the rotating shaft body 23 under the connection of the coupling. The threaded rod 231 fixed to the top of the rotating shaft body 23 can rotate synchronously. Since the threaded rod 231 is threadedly connected to the threaded cylinder 24, and because the outer wall of the threaded cylinder 24 is fixed with a plug-in member 241 inserted into the motor mounting cylinder 22, the rotation of the threaded rod 231 can drive the threaded cylinder 24 to gradually approach the motor mounting cylinder 22 and drive the receiving seat 25 to descend. The descent of the receiving seat 25 can drive the two magnetic attraction extension rods 251 to descend, so that the chain body 4 descends synchronously. After the chain body 4 descends, its two ends can be respectively inserted into the two sets of abutting blocks 312. As the threaded rod 231 continues to rotate, it can drive the receiving seat 25 to move downward below the chain body 4 and separate from the chain body 4. At this time, the descent of the magnetic attraction extension rod 251 can drive the slide plate 32 to descend. The sliding of the slide plate 32 can drive the hinge member 33 to slide, and then push the rotating rod 34 rotatably connected to the hinge member 33 to rotate around the contact position with the chute plate 35. When the hinge member 33 slides to a position flush with the guide groove, the rotating rod 34 can push the chute plate 35 to slide. At this time, the chute plate 35 slides to the position farthest from the hinge member 33. Since the slide rod 361 slides inside the chute plate 35, the chute plate 35 can pull the stretching member 36 to slide between the two arc-shaped plates 313, and finally a gap appears between the two sets of abutting blocks 312. At the same time, the chain body 4 can move between the two abutting blocks 312. As the hinge member 33 continues to slide, it can drive the stretching member 36 to rotate in the opposite direction. At this time, one end of the stretching member 36 can be inserted into the chain body 4. When the hinge member 33 slides to the bottom end of the guide through groove, it can drive the stretching member 36 to be completely inserted into the chain body 4. At this time, two hydraulic rods can be started to pull the two stretching seats 31 to gradually move away from each other. During 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 abutting blocks 312, so that the chain body 4 can be stretched. When the stretching is completed, the two hydraulic rods drive the two reset stretching seats 31 to reset respectively, and then the motor body inside the motor mounting cylinder 22 is started to drive the rotating shaft body 23 to rotate in the reverse direction. Under the mutual 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 seat 25 is convenient for the operator to observe, and then the chain body 4 can be clamped and transported through the clamping device, greatly reducing the probability of the chain body 4 falling off during the clamping and transportation process by the clamping device.

[0041] In this embodiment, a plurality of pairs of guide wheels 252 are rotatably provided at the top end of the receiving seat 25, and the plurality of pairs of guide wheels 252 are equidistantly distributed. Guide grooves 253 are formed on both sides of the top end of the receiving seat 25, and a limiting groove matching the chain body 4 is formed at the top end of the receiving seat 25.

[0042] A control panel is provided on the outer side of the detection device body 1, and a sorting box is provided at the bottom end of the inner wall of the detection device body 1.

[0043] Both of the two arc-shaped plates 313 are made of rubber, and smooth surface members are provided inside the two arc-shaped plates 313, and the smooth surface members are made of iron. The distance between the two abutting blocks 312 is greater than the cross-sectional width of the chain body 4, and a straight chute matching the sliding rod 361 is formed at the top end of the rotating rod 34.

[0044] When the stretching ends, if the chain body 4 breaks, the position of the chain body 4 at the top end of the receiving seat 25 changes. Moreover, at this time, most of the two ends of the chain body 4 are completely exposed outside the receiving seat 25. When the stretching end of the chain body 4 separates from the stretching member 36, it can drive the broken chain body 4 to slide down 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 sorting box. At the same time, the setting of the guide wheels 252 can reduce the friction between the chain body 4 and the receiving seat 25, so as to achieve the function of automatic sorting.

[0045] The working principle of this device is as follows: The chain body 4 is placed on the top of the receiving seat 25 through the clamping device. At this time, only a small part of both ends of the chain body 4 is exposed outside the receiving seat 25. The motor body inside the motor mounting cylinder 22 can be started, and the rotation of the rotating shaft body 23 is driven under the connection of the coupling. The threaded rod 231 fixed to the top of the rotating shaft body 23 can rotate synchronously. Since the threaded rod 231 is threadedly connected to the threaded cylinder 24, and because the outer wall of the threaded cylinder 24 is fixed with a plug-in member 241 inserted into the motor mounting cylinder 22, the rotation of the threaded rod 231 can drive the threaded cylinder 24 to gradually approach the motor mounting cylinder 22, and drive the receiving seat 25 to descend. The descent of the receiving seat 25 can drive the two magnetic attraction extension rods 251 to descend, so that the chain body 4 can descend synchronously. The descent of the chain body 4 can cause both ends of it to be respectively inserted into the two sets of abutting blocks 312. With the continuous rotation of the threaded rod 231, the receiving seat 25 can be driven to move downward and separate from the chain body 4. At this time, the descent of the magnetic attraction extension rod 251 can drive the slide plate 32 to descend. The sliding of the slide plate 32 can drive the hinge member 33 to slide, and then push the rotating rod 34 rotatably connected to the hinge member 33 to rotate around the position where it contacts the chute plate 35. When the hinge member 33 slides to a position flush with the guide groove, the rotating rod 34 can push the chute plate 35 to slide. At this time, the chute plate 35 slides to the position farthest from the hinge member 33. Since the sliding rod 361 slides inside the chute plate 35, the chute plate 35 can pull the tension member 36 to slide between the two arc-shaped plates 313, and finally a gap appears between the two abutting blocks 312. At the same time, the chain body 4 can move between the two abutting blocks 312. With the continuous sliding of the hinge member 33, the tension member 36 can be driven to rotate in the opposite direction. At this time, one end of the tension member 36 can be inserted into the chain body 4. When the hinge member 33 slides to the bottom end of the guide through groove, the tension member 36 can be driven to be completely inserted into the chain body 4. At this time, two hydraulic cylinders can be started to pull the two tension seats 31 to gradually move away from each other. During this process, one side of the outer wall of the tension 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 tension member 36 is in close contact with the outer walls of the two abutting blocks 312, so as to stretch the chain body 4. When the stretching is completed, the two hydraulic cylinders drive the two reset tension seats 31 to reset respectively. At this time, most of both ends of the chain body 4 are completely exposed outside the receiving seat 25. Then, the motor body inside the motor mounting cylinder 22 is started to drive the rotating shaft body 23 to rotate in the reverse direction. Under the mutual 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 tension members 36 can be driven to separate from both 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 stretched end of the chain body 4 separates from the tension member 36, under the action of the gravity of the stretched end of the chain body 4 itself, the broken chain body 4 can be driven to slide down along the inclined surface of the guiding groove 253, and then fall into the sorting box. At the same time, the setting of the guide wheel 252,It can reduce the frictional force between the chain body 4 and the receiving seat 25.,

[0046] In this article, specific examples are used to elaborate on the principles and implementation manners of the present application. The descriptions of the above embodiments are only used to help understand the method and its core idea of the present application. The above are only the preferred implementation manners of the present application. It should be noted that due to the limited nature of literal expression and objectively infinite specific structures, for those of ordinary skill in the art, without departing from the principle of the present application, several improvements, retouches or changes can be made, or the above technical features can be combined in an appropriate manner; these improvements, retouches, changes or combinations, or directly applying the inventive concept and technical solution to other occasions without improvement, shall all be regarded as the protection scope of the present 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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