Device capable of dynamically detecting elongation and fracture of dumbbell pin and dumbbell pin

Abstract

The utility model provides a dumbbell pin and a device capable of dynamically detecting elongation and fracture of the dumbbell pin, which are applied to the technical field of underground detection equipment, the device comprises a detection assembly and a detection line, the detection assembly comprises a gear set and a detection piece, the detection line is wound on the gear set, the detection piece is meshed with the gear set through a detection gear, and the gear set is connected with the detection line. When the detection line deforms, the gear set is driven to rotate to drive the detection gear to rotate, so that the detection piece can monitor the deformation of the detection line. The rotation angle of the gear set is detected through the detection piece, the deformation amount of the detection line is monitored in real time, and therefore the working state of the dumbbell pin is judged, the structure is simple, cost is low, and the situation of communication interruption does not exist.

Description

Technical Field

[0001] The utility model belongs to the technical field of underground detection equipment, and specifically relates to a device capable of dynamically detecting the elongation and fracture of a dumbbell pin and a dumbbell pin. Background Art

[0002] The dumbbell pin plays a vital role in the mining scraper conveyor. As the most basic connecting device of the scraper conveyor, it is mainly used to connect the middle groove, skylight groove, convex groove and groove parts of the scraper conveyor.

[0003] During the coal mining process, due to the asynchronous movement of the hydraulic support, the adjacent middle slots of the scraper conveyor will deflect horizontally and vertically, causing the dumbbell pin to be subjected to a large force and deform. In this case, the dumbbell pin is prone to wear or even breakage. The breakage of the dumbbell pin will cause the middle slot to be dislocated or disengaged, thus affecting the normal progress of coal mining.

[0004] The Chinese invention patent with publication number CN105059869A discloses a scraper conveyor dumbbell pin fracture detection system and method, which belongs to the pin fracture detection system and method. The system includes a scraper conveyor, a wireless distance measuring device, a wireless communication device, a bracket controller and a monitoring center; the wireless distance measuring device is installed on the side of the scraper conveyor chute coal shoveling plate, and has a laser rangefinder and a reflective target plate to detect the relative displacement of any two adjacent chutes; the wireless communication device realizes the communication between the wireless distance measuring device and the bracket controller, and transmits the displacement data of the laser rangefinder to the bracket controller by wireless transmission; the bracket controller controls the movement of the scraper conveyor chute; the monitoring center is electrically connected to the bracket controller, and can store and process the relative displacement data of any adjacent chutes. The method uses the relative displacement value between two adjacent chutes as a reference to determine whether the dumbbell pin has a fracture fault, can accurately determine the position of the broken dumbbell pin, and control the chute movement through the bracket controller, which has extremely high promotion and use value.

[0005] The above patent uses a wireless ranging device, wireless communication equipment, a bracket controller and a monitoring center to form a detection system, and performs detection through communication equipment and precision instruments. The detection cost is high, and the communication equipment has the risk of communication interruption. Utility Model Content

[0006] In view of the above-mentioned problems in the prior art, the purpose of the utility model is to provide a device that can dynamically detect the elongation and fracture of a dumbbell pin. The device detects the rotation angle of the gear set by the detection part and monitors the deformation of the detection line in real time, so as to judge the working state of the dumbbell pin. The device has a simple structure, low cost, and no communication interruption.

[0007] A device capable of dynamically detecting the elongation and fracture of a dumbbell pin comprises a detection assembly and a detection line, wherein the detection assembly comprises a gear group and a detection member, the detection line is wound on the gear group, the detection member is meshed with the gear group through the detection gear, when the detection line is deformed, the gear group is driven to rotate and the detection gear is driven to rotate, thereby realizing monitoring of the deformation of the detection line by the detection member.

[0008] Preferably, the gear set and the detection member are both connected to a mounting seat, the mounting seat is mounted on a dumbbell pin, and the detection line passes through the interior of the dumbbell pin and is connected to the gear set.

[0009] Preferably, the detection member is an encoder, the rotating shaft of the encoder is connected to the detection gear, and the encoder monitors the deformation of the detection line by driving the rotating shaft to rotate at an angle driven by the detection gear.

[0010] Preferably, the gear group includes a gear, a rebound disk, a winding reel and a gear group bracket, and the gear, rebound disk and winding reel are connected to the gear group bracket through a rotating rod. The detection line is wound around the winding reel, and a spring is connected to the rebound disk. The other end of the spring is connected to the mounting seat, and the gear is meshed with the detection gear.

[0011] Preferably, the detection member is connected to the mounting seat via a detection member bracket, and one end of the rotating rod away from the gear set bracket is connected to the detection member bracket.

[0012] Preferably, the gear ratio between the gear and the detection gear is not less than 3.

[0013] Preferably, a detection line export tube is arranged beside the gear set, the detection line export tube is a tubular structure, the detection line is located inside the detection line export tube, and one end of the detection line export tube passes through the mounting seat and is located inside the dumbbell pin.

[0014] Preferably, one end of the detection line outlet tube away from the mounting seat is connected to a detection line guide, and the detection line passes through the detection line outlet tube and the detection line guide and is then wound on a cable reel, a through hole is provided on the cable reel, and the through holes include through hole one and through hole two, the detection line on the cable reel is extended into through hole one and then extended out from through hole two, and the detection line led out from through hole two is then inserted into the detection line guide.

[0015] Preferably, the detection line guide is provided with a lead-out hole 1 coaxial with the detection line lead-out tube, and the detection line guide is also provided with a lead-out hole 2 vertically and longitudinally distributed with the detection line lead-out tube. After passing through the detection line lead-out tube, the detection line is led out from the lead-out hole 1 to the winding reel for winding, and then introduced into the detection line guide from the lead-out hole 2.

[0016] The second object of the utility model is to provide a dumbbell pin, including the above-mentioned device that can dynamically detect the elongation and fracture of the dumbbell pin, the dumbbell pin is in an "I"-shaped structure, including a rod-shaped dumbbell pin body and a detection line fixing member and a base connected to both ends of the dumbbell pin body, the gear group and the detection member are installed in the base through a mounting seat, and the detection line runs through the dumbbell pin body from the end side of the detection line fixing member to the gear group inside the base.

[0017] The beneficial effects of the utility model are as follows: the device and dumbbell pin that can dynamically detect the elongation and fracture of the dumbbell pin can monitor the deformation of the detection line in real time by detecting the rotation angle of the gear group through the detection part, thereby judging the deformation and elongation of the dumbbell pin and analyzing the working state of the dumbbell pin, so as to facilitate timely discovery of the abnormal state of the dumbbell pin, timely adjust the pushing process of the hydraulic support, and take preventive measures to avoid wear and even fracture of the dumbbell pin, which affects the normal advancement and production of the working surface.

[0018] By monitoring the deformation of the detection line and analyzing the working status of the dumbbell pin, the safety and stability of coal mining can be improved, equipment failures and maintenance time can be reduced, and production efficiency can be improved. Real-time monitoring of the working status of the dumbbell pin can detect abnormal conditions of the dumbbell pin in advance, avoid serious damage to the dumbbell pin, and reduce maintenance costs. Through real-time monitoring and preventive measures, the service life of the dumbbell pin can be extended and the reliability and stability of the equipment can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0020] Figure 1 It is a structural schematic diagram of the utility model;

[0021] Figure 2 It is a schematic diagram of the structure inside the base of the utility model;

[0022] Figure 3 It is a schematic diagram of the structure inside the mounting base of the utility model;

[0023] Figure 4 It is a structural schematic diagram of the gear set of the utility model;

[0024] Figure 5 It is a side view of the gear set of the utility model;

[0025] Figure 6 It is a structural schematic diagram of the detection line guide of the utility model;

[0026] Figure 7 This is a schematic diagram of the structure of the utility model Figure 6 Enlarged view of point A in the middle.

[0027] The markings in the figure are: 1. Dumbbell pin body; 2. Detection line fixing part; 3. Base; 301. Detection line slot; 4. Mounting seat; 5. Detection part bracket; 6. Gear group bracket; 7. Encoder; 8. Detection gear; 9. Fixing hole; 10. Gear group; 1001. Gear; 1002. Rebound disk; 1003. Winding disk; 11. Detection line lead-out tube; 12. Detection line guide; 13. Detection line; 14. Spring; 15. Spring fixing bolt; 16. Limiting part. DETAILED DESCRIPTION

[0028] Embodiment 1

[0029] like Figures 1 to 7 As shown, a device that can dynamically detect the elongation and fracture of a dumbbell pin includes a detection component and a detection line 13, wherein the detection component includes a gear group 10 and a detection member, wherein the detection line 13 is wound on the gear group 10, and the detection member is meshed with the gear group 10 through the detection gear 8. When the detection line 13 is deformed, the gear group 10 is driven to rotate and the detection gear 8 is driven to rotate, thereby realizing the detection member monitoring the deformation of the detection line 13.

[0030] Specifically, Figure 2 , Figure 3 As shown, the gear set 10 and the detection member are both connected to the mounting base 4, and the mounting base 4 is installed on the dumbbell pin, wherein the detection member in this embodiment is an encoder 7, and the rotating shaft of the encoder 7 is connected to the detection gear 8. The encoder 7 monitors the deformation of the detection line 13 by driving the rotating shaft to rotate through the detection gear 8, and the encoder 7 is connected to the mounting base 4 through the detection member bracket 5.

[0031] like Figures 3 to 6 As shown, the gear set 10 includes a gear 1001, a rebound disk 1002, a winding reel 1003 and a gear set bracket 6. The gear 1001, the rebound disk 1002, and the winding reel 1003 are connected to the gear set bracket 6 through a rotating rod, and the end of the rotating rod away from the gear set bracket 6 is connected to the detection component bracket 5.

[0032] Specifically, the detection line 13 passes through the interior of the dumbbell pin and is wound around the cable reel 1003. The rebound reel 1002 is connected to a spring 14 via a spring fixing screw 15. The other end of the spring 14 is connected to the mounting seat 4. The gear 1001 is meshed with the detection gear 8, and the gear 1001 and the detection gear 8 have a tooth ratio of not less than 3. When the dumbbell pin is deformed, the detection line 13 is stretched and deformed, which can drive the cable reel 1003 to rotate, thereby driving the gear 1001 to rotate. Through the meshing of the gear 1001 and the detection gear 8, the detection gear 8 is driven to rotate. The tooth ratio of the gear 1001 and the detection gear 8 is set to not less than 3. The rotation angle of the cable reel 1003 can be amplified and detected by the encoder 7, thereby calculating the deformation of the dumbbell pin.

[0033] When the detection line 3 is deformed by the dumbbell pin and stretches, driving the winding reel 1003 to rotate, the rebound plate 1002 rotates accordingly, so that the spring 14 is compressed or stretched. When the external force on the dumbbell pin body 1 is eliminated, the force on the spring 14 is eliminated, and according to the elastic action of the spring 14, the rebound plate 1002 is driven to reset, so that the gear set 10 returns to the initial position.

[0034] In addition, if Figure 6 As shown, a detection line export tube 11 is arranged beside the gear set 10. The detection line export tube 11 is a tubular structure. The detection line 13 is located inside the detection line export tube 11. One end of the detection line export tube 11 passes through the mounting seat 4 and is located inside the dumbbell pin.

[0035] For further information, please refer to Figure 7 , the end of the detection line outlet tube 11 away from the mounting seat 4 is connected to the detection line guide 12, and the detection line 13 passes through the detection line outlet tube 11 and the detection line guide 12 and is wound on the winding drum 1003. The winding drum 1003 is provided with through holes, including through holes 1 and 2. The detection line 13 on the winding drum 1003 extends into the through hole 1 and then extends out from the through hole 2. The detection line 13 led out from the through hole 2 then passes into the detection line guide 12. Among them, a limiter 16 is arranged at the through hole on the winding drum 1003. The limiter 6 is used to limit the detection line 13 and protect the detection line 13 to prevent the detection line 13 from rubbing against the side wall of the winding drum 1003 and causing wear.

[0036] The detection line guide 12 is provided with a lead-out hole 1 coaxial with the detection line lead-out tube 11, and the detection line guide 12 is also provided with a lead-out hole 2 vertically distributed with the detection line lead-out tube 11. After the detection line 13 passes through the detection line lead-out tube 11, it is led out from the lead-out hole 1 to the winding drum 1003 for winding, and then introduced into the detection line guide 12 from the lead-out hole 2. The remaining detection line 13 is inserted into the detection line guide 12, and the detection line 13 is correctly guided to prevent the remaining part of the detection line 13 from getting stuck in the key part during the rotation of the gear set 10, affecting the monitoring process.

[0037] Embodiment 2

[0038] like Figure 1 , Figure 2 As shown, in the second aspect, the utility model provides a dumbbell pin, including the device capable of dynamically detecting the elongation and fracture of the dumbbell pin as described in the first embodiment, the dumbbell pin is in an "I"-shaped structure, including a rod-shaped dumbbell pin body 1 and a detection line fixing member 2 and a base 3 connected to both ends of the dumbbell pin body 1. Among them, the gear set 10 and the detection member are installed in the base 3 through the mounting seat 4, and the mounting seat 4 is provided with a fixing hole 9, and the mounting seat 4 is connected to the inside of the base 3 through the cooperation between the fixing bolt and the fixing hole 9. The mounting seat 4 is also provided with a detection line groove 301 for the detection line 13 to pass through, and the detection line 13 passes through the dumbbell pin body 1 from the end side of the detection line fixing member 2 to the gear set 10 inside the base 3. One end of the detection line 13 is fixed by the detection line fixing part 2, and the other end is wound in the winding drum 1003 and fixed by the limiter 16. When the dumbbell pin body 1 is deformed by force, the detection line 13 inside it is deformed accordingly, driving the gear set 10 to rotate. The deformation of the detection line 13 can be monitored by detecting the rotation angle of the rotating shaft through the encoder 7, thereby obtaining the working state of the dumbbell pin.

[0039] Working principle: This device can dynamically detect the elongation and fracture of the dumbbell pin. During the coal mining process, as the hydraulic support moves, the adjacent middle slots of the scraper conveyor will deflect horizontally and vertically, and the dumbbell pin body 1 will be subjected to a large force and deformed. The detection line 13 is also stretched as a result. At this time, the detection line 13 drives the cable reel 1003 to rotate, and the cable reel 1003 drives the entire gear set 10 to rotate, and the detection gear 8 is driven to rotate through the meshing of the gear 1001 and the detection gear 8. At this time, the gear 1001 is the driving wheel and the detection gear 8 is the driven wheel. Since the tooth ratio of the gear 1001 and the detection gear 8 is set to be not less than 3, the meshing of the gear 1001 and the detection gear 8 amplifies the rotation angle of the cable reel 1003 and calculates it through the encoder 7, so as to monitor the small deformation of the dumbbell pin body 1 in real time, and then adjust the pushing sequence of the hydraulic support in time, effectively prevent the dumbbell pin body 1 from breaking under complex working conditions, and when the external force on the dumbbell pin body 1 is eliminated, the rebound disk 1002 drives the gear set 10 to return to its initial position under the elastic force of the spring 14.

[0040] The above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A device that can dynamically detect the elongation and fracture of dumbbell pins, It is characterized in that The invention comprises a detection component and a detection line (13), wherein the detection component comprises a gear group (10) and a detection member, wherein the detection line (13) is wound on the gear group (10), and the detection member is meshed with the gear group (10) via a detection gear (8). When the detection line (13) is deformed, the gear group (10) is driven to rotate, thereby driving the detection gear (8) to rotate, thereby enabling the detection member to monitor the deformation amount of the detection line (13).

2. The device for dynamically detecting the elongation and fracture of a dumbbell pin according to claim 1, It is characterized in that The gear set (10) and the detection element are both connected to a mounting seat (4), the mounting seat (4) is mounted on a dumbbell pin, and the detection line (13) passes through the interior of the dumbbell pin and is connected to the gear set (10).

3. The device for dynamically detecting the elongation and fracture of a dumbbell pin according to claim 1, It is characterized in that The detection member is an encoder (7), the rotating shaft of the encoder (7) is connected to a detection gear (8), and the encoder (7) monitors the deformation amount of the detection line (13) by driving the rotating shaft to rotate with the detection gear (8).

4. The device for dynamically detecting the elongation and fracture of a dumbbell pin according to claim 1, It is characterized in that The gear set (10) comprises a gear (1001), a rebound disk (1002), a winding reel (1003) and a gear set bracket (6); the gear (1001), the rebound disk (1002) and the winding reel (1003) are connected to the gear set bracket (6) via a rotating rod; the detection line (13) is wound around the winding reel (1003); the rebound disk (1002) is connected to a spring (14); the other end of the spring (14) is connected to a mounting seat (4); and the gear (1001) is meshed with a detection gear (8).

5. The device for dynamically detecting the elongation and fracture of a dumbbell pin according to claim 4, It is characterized in that The detection member is connected to the mounting seat (4) via a detection member bracket (5), and one end of the rotating rod away from the gear set bracket (6) is connected to the detection member bracket (5).

6. The device for dynamically detecting the elongation and fracture of a dumbbell pin according to claim 4, It is characterized in that The gear ratio between the gear (1001) and the detection gear (8) is not less than 3.

7. The device for dynamically detecting the elongation and fracture of a dumbbell pin according to claim 1, It is characterized in that A detection line lead-out tube (11) is arranged beside the gear set (10); the detection line lead-out tube (11) is a tubular structure; the detection line (13) is located inside the detection line lead-out tube (11); one end of the detection line lead-out tube (11) passes through the mounting seat (4) and is located inside the dumbbell pin.

8. The device for dynamically detecting the elongation and fracture of a dumbbell pin according to claim 7, It is characterized in that The end of the detection line outlet tube (11) away from the mounting seat (4) is connected to a detection line guide (12); the detection line (13) passes through the detection line outlet tube (11) and the detection line guide (12) and is then wound on a cable reel (1003); a through hole is provided on the cable reel (1003), and the through hole includes a through hole 1 and a through hole 2; the detection line (13) on the cable reel (1003) extends into the through hole 1 and then extends out from the through hole 2; the detection line (13) led out from the through hole 2 then passes into the detection line guide (12).

9. The device for dynamically detecting the elongation and fracture of a dumbbell pin according to claim 8, It is characterized in that The detection line guide (12) is provided with a first lead-out hole coaxial with the detection line lead-out tube (11), and the detection line guide (12) is also provided with a second lead-out hole vertically and longitudinally distributed with the detection line lead-out tube (11). After the detection line (13) passes through the detection line lead-out tube (11), it is led out from the first lead-out hole to the winding drum (1003) for winding, and then introduced into the detection line guide (12) from the second lead-out hole.

10. A dumbbell pin, comprising a device capable of dynamically detecting the elongation and fracture of the dumbbell pin as claimed in any one of claims 1 to 9, It is characterized in that The dumbbell pin is in an "I"-shaped structure, comprising a rod-shaped dumbbell pin body (1), a detection line fixing member (2) connected to both ends of the dumbbell pin body (1), and a base (3); the gear set (10) and the detection member are installed in the base (3) via a mounting seat (4); and the detection line (13) passes through the dumbbell pin body (1) from the end side of the detection line fixing member (2) to the gear set (10) inside the base (3).

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