Winding and unwinding anti-falling device and anti-falling method

Abstract

The invention discloses a winding and unwinding anti-falling device which comprises an anti-falling frame, a gland unit is connected to the anti-falling frame, a proximity switch unit is further arranged between the gland unit and the anti-falling frame, a pair of eccentric bearing units is further connected to the anti-falling frame, and the eccentric bearing units are arranged below the gland unit. The invention further discloses an anti-falling method of the device. The anti-falling method specifically comprises the steps that the winding and unwinding anti-falling device is installed on a rotary arm of a winding and unwinding rotary material disc; locking bolts are unscrewed, a gland unit is opened, specifically, two shaft heads of an air expansion shaft are placed into corresponding semicircular ring supporting plates, and an adjusting nut is screwed down after an eccentric bearing unit is adjusted; the gland units are combined, and the locking bolts are tightened to be fixedly connected with the semicircular ring supporting plates; and the proximity switch is started, and if the gap between the semicircular supporting plate and the second gland lug is larger than a set value, the proximity switch sends a signal to give an alarm. The device solves the problem that an existing air swelling shaft supporting structure for winding and unwinding is not firm.

Description

Technical Field

[0001] The present invention relates to the technical field of coating equipment, and in particular to a reel anti-falling device. The present invention also relates to a method for preventing a reel from falling by using the reel anti-falling device. Background Art

[0002] At present, the coating materials and coating processes in the precision coating industry are diverse, and there are many types of coating products. In order to adapt to the various needs of users, coating factories often have to frequently change processes and products, and choose more and more air expansion shaft support forms, which can meet customers' requirements for larger widths, larger roll diameters, and larger weights; but when running at high speeds, in order to ensure safety, we need to design and develop a new anti-falling mechanical structure as a double protection; provide customers with a safer and more efficient winding and unwinding mechanism; thereby improving the intelligence and automation of the equipment and improving coating efficiency. Summary of the invention

[0003] The purpose of the present invention is to provide a reel anti-falling device, which solves the problem that the existing reel air expansion shaft support structure is not firm.

[0004] Another object of the present invention is to provide a method for preventing falling off using the above-mentioned reeling and unreeling anti-falling device.

[0005] The first technical solution adopted by the present invention is: a reeling and unreeling anti-falling device, including an anti-falling frame, a cover unit is connected to the anti-falling frame, a proximity switch unit is also arranged between the cover unit and the anti-falling frame, and a pair of eccentric bearing units are also connected to the anti-falling frame, and the eccentric bearing unit is arranged below the cover unit.

[0006] The first technical solution of the present invention is also characterized in that: The anti-dropping frame includes a flange plate, on which a plurality of connecting through holes are evenly arranged. A semicircular tube is fixedly connected to one side of the flange plate, and the axis of the semicircular tube coincides with the axis of the flange plate. A semicircular ring support plate is fixedly connected to the other end of the semicircular tube, and a through hole under the shaft head is arranged at the axis of the semicircular ring support plate.

[0007] Two eccentric shaft holes are arranged on the semicircular ring support plate. The two eccentric shaft holes are arranged just below the shaft head through hole. The two eccentric shaft holes are symmetrically distributed along the symmetry line of the semicircular ring support plate.

[0008] The pressure cover unit includes a first pressure cover ear, a first through hole is opened on the first pressure cover ear, one end of the first pressure cover ear is fixedly connected to the pressure cover body, a through hole on the shaft head is opened on one side of the pressure cover body, and the other end of the pressure cover body is fixedly connected to the second pressure cover ear, the first pressure cover ear is rotatably connected to a fixed support through a pin shaft, and the fixed support is fixed to the semicircular ring support plate through two bolts, a locking bolt through hole is opened on the second pressure cover ear, a locking bolt is passed through the locking bolt through hole, one end of the locking bolt is connected to the semicircular ring support plate through a thread, and the other end of the locking bolt is connected to a locking handwheel through a thread, and a limiting through hole perpendicular to the axis of the locking bolt is also opened on the locking handwheel, a limiting screw is threadedly connected in the limiting through hole, one end of the limiting screw contacts the locking bolt, the second pressure cover ear is in contact with the semicircular ring support plate, and a gap is provided between the first pressure cover ear and the semicircular ring support plate.

[0009] The axes of the first through hole and the through hole on the shaft head are parallel to the axis of the through hole under the shaft head.

[0010] The eccentric shaft hole is a stepped hole, and an eccentric bearing unit is passed through the eccentric shaft hole. The eccentric bearing unit includes a first shaft, one end of the first shaft is fixedly connected to the second shaft, and the other end of the second shaft is fixedly connected to the third shaft. The first shaft and the second shaft are both passed through the eccentric shaft hole. The surface of the first shaft is provided with a thread, and the part of the first shaft passing through the eccentric shaft hole is connected with an adjusting nut through a thread. The axis of the third shaft does not coincide with the axis of the second shaft. A bearing is sleeved on the third shaft, and one side of the inner ring of the bearing contacts with the second shaft. A retaining spring groove is provided on the third shaft, and a retaining spring is installed in the retaining spring groove. The other side of the inner ring of the bearing contacts with the retaining spring, and a bearing sleeve is sleeved on the outer ring of the bearing.

[0011] The proximity switch unit includes a proximity switch bracket, which is fixed to the surface of a semicircular ring support plate by bolts. A proximity switch is inserted into the semicircular ring support plate. The proximity switch and the proximity switch bracket are fixed by a pair of nuts. The axis of the proximity switch is aligned with the axis of the locking bolt. The proximity switch also includes a detection block, which is fixed to the side of the second gland ear by bolts. The position of the detection block is aligned with the proximity switch.

[0012] The second technical solution adopted by the present invention is a method for preventing the unwinding and rewinding from falling off, which adopts an unwinding and rewinding anti-falling device, and specifically comprises the following steps: S1. Install the anti-dropping device for the unwinding and rewinding roll on the rotating arm of the unwinding and rewinding revolving material tray; S2. Loosen the locking bolt to separate it from the semicircular support plate and open the gland unit: S3. Place the two shaft heads of the gas expansion shaft into the corresponding semicircular support plates respectively, rotate the eccentric bearing unit so that the bearing sleeve fits the shaft head of the gas expansion shaft, and tighten the adjusting nut; S4, combine the gland unit, tighten the locking bolts, and fix the locking bolts to the semicircular support plate; S5. Start the proximity switch. When the equipment is running, if the gap between the semicircular support plate and the second gland ear is greater than the set value, the proximity switch sends a signal for warning.

[0013] The second technical solution of the present invention is also characterized in that: The specific process of S1 is: the reel rotating material tray includes a pair of rotating arms, and four top cones are symmetrically installed on the pair of rotating arms. The flanges of the four reel anti-falling devices are fixed to the rotating arms of the reel rotating material tray by bolts. Every two reel anti-falling devices form a group, and each flange is arranged at the corresponding top cone.

[0014] The beneficial effects of the present invention are: The anti-dropping device for rewinding and unwinding of the present invention is safe and efficient, has a simple structure, is easy to operate, improves coating efficiency, has a high degree of automation, and reduces the accident rate. It effectively avoids the probability of safety accidents at the rewinding and unwinding of the coating machine, and at the same time improves the quality of the coating equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the reel-unreel anti-falling device of the present invention; Figure 2 It is a structural schematic diagram of the anti-falling frame of the present invention; Figure 3 It is a side structural schematic diagram of the anti-falling frame of the present invention; Figure 4 It is a partial enlarged structural schematic diagram of the present invention; Figure 5 It is a structural schematic diagram of the eccentric bearing unit of the present invention; Figure 6 It is a working schematic diagram of the present invention; Figure 7 yes Figure 5 Schematic diagram of the local enlarged structure in.

[0016] In the figure, 1. anti-drop frame; 101. flange; 102. semicircular tube; 103. semicircular ring support plate; 104. connecting through hole; 105. through hole under the shaft head; 106. eccentric shaft hole; 2. gland unit; 201. first gland ear; 202. gland body; 203. through hole on the shaft head; 204. second gland ear; 205. pin; 206. fixed support; 207. locking bolt; 208. locking handwheel; 3. proximity switch unit; 301. proximity switch bracket; 302. proximity switch; 303. detection block; 4. eccentric bearing unit; 401. first shaft; 402. second shaft; 403. third shaft; 404. bearing; 405. retaining ring; 407. bearing sleeve; 5. swivel arm; 6. gas expansion shaft; 7. top cone. DETAILED DESCRIPTION

[0017] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0018] like Figure 1 As shown, the present invention provides a reel anti-falling device, including an anti-falling frame 1, to which a pressure cover unit 2 is connected, and a proximity switch unit 3 is also arranged between the pressure cover unit 2 and the anti-falling frame 1, and the anti-falling frame 1 is also connected to a pair of eccentric bearing units 4, and the eccentric bearing unit 4 is arranged below the pressure cover unit 2.

[0019] like Figure 1-3 As shown, the anti-dropping frame 1 includes a flange 101, and a plurality of connecting through holes 104 are evenly formed on the flange 101. A semicircular tube 102 is fixedly connected to one side of the flange 101, and the axis of the semicircular tube 102 coincides with the axis of the flange 101. A semicircular ring support plate 103 is fixedly connected to the other end of the semicircular tube 102, and a shaft head lower through hole 105 is formed at the axis of the semicircular ring support plate 103. Two eccentric shaft holes 106 are formed on the semicircular ring support plate 103, and the two eccentric shaft holes 106 are arranged directly below the shaft head lower through hole 105, and the two eccentric shaft holes 106 are symmetrically distributed along the symmetry line of the semicircular ring support plate 103.

[0020] like Figure 1 and Figure 4 As shown, the gland unit 2 includes a first gland ear 201, a first through hole is provided on the first gland ear 201, one end of the first gland ear 201 is fixedly connected to a gland body 202, a shaft head through hole 203 is provided on one side of the gland body 202, and a second gland ear 204 is fixedly connected to the other end of the gland body 202, the first gland ear 201 is rotatably connected to a fixed support 206 through a pin 205, the fixed support 206 is fixedly connected to the semicircular support plate 103 through two bolts, and a locking bolt through hole is provided on the second gland ear 204, and the locking bolt A locking bolt 207 is inserted into the bolt through hole, one end of the locking bolt 207 is connected to the semicircular support plate 103 by threading, and the other end of the locking bolt 207 is connected to the locking hand wheel 208 by threading. The locking hand wheel 208 is also provided with a limit through hole perpendicular to the axis of the locking bolt 207, and a limit screw is connected to the limit through hole by threading, and one end of the limit screw is in contact with the locking bolt 207, the second gland ear 204 is in contact with the semicircular support plate 103, and a gap is provided between the first gland ear 201 and the semicircular support plate 103. The axes of the first through hole and the through hole 203 on the shaft head are parallel to the axis of the through hole 105 under the shaft head.

[0021] like Figure 1 and Figure 5As shown, the eccentric shaft hole 106 is a stepped hole, and an eccentric bearing unit 4 is passed through the eccentric shaft hole 106. The eccentric bearing unit 4 includes a first shaft 401, one end of the first shaft 401 is fixedly connected to the second shaft 402, and the other end of the second shaft 402 is fixedly connected to the third shaft 403. The first shaft 401 and the second shaft 402 are both passed through the eccentric shaft hole 106, and the surface of the first shaft 401 is provided with threads. The part of the first shaft 401 passing through the eccentric shaft hole 106 is connected with an adjusting nut 406 through threads. The axis of the third shaft 403 does not coincide with the axis of the second shaft 402. A bearing 404 is sleeved on the third shaft 403, and one side of the inner ring of the bearing 404 contacts the second shaft 402. A retaining spring groove is provided on the third shaft 403, and a retaining spring 405 is installed in the retaining spring groove. The other side of the inner ring of the bearing 404 contacts the retaining spring 405, and a bearing sleeve 407 is sleeved on the outer ring of the bearing 404.

[0022] like Figure 1 As shown, the proximity switch unit 3 includes a proximity switch bracket 301, which is fixed to the surface of the semi-circular ring support plate 103 by bolts, and a proximity switch 302 is inserted on the semi-circular ring support plate 103. The proximity switch 302 is fixed to the proximity switch bracket 301 by a pair of nuts, and the axis of the proximity switch 302 is aligned with the axis of the locking bolt 207. It also includes a detection block 303, which is fixed to the side of the second pressure cover ear 204 by bolts, and the position of the detection block 303 is aligned with the proximity switch 302.

[0023] like Figure 6 and Figure 7 As shown, the method for preventing the reel from falling off adopts a reel-winding and reel-winding anti-falling device, and specifically comprises the following steps: S1. Install the anti-falling device for the unwinding and rewinding roll on the rotating arm 5 of the unwinding and rewinding rewinding rotary material tray. The specific process of S1 is as follows: the unwinding and rewinding rewinding rotary material tray comprises a pair of rotating arms 5, and four top cones 7 are symmetrically installed on the pair of rotating arms 5. The flanges 101 of the four anti-falling devices for the unwinding and rewinding roll are fixed to the rotating arms 5 of the unwinding and rewinding rewinding rotary material tray by bolts. Every two anti-falling devices for the unwinding and rewinding roll form a group, and each flange 101 is arranged at the corresponding top cone 7.

[0024] S2. Loosen the locking bolt 207 to separate the locking bolt 207 from the semicircular support plate 103 and open the gland unit 2: S3, put the two shaft heads of the gas expansion shaft 6 into the corresponding semicircular support plates 103 respectively, rotate the eccentric bearing unit 4, so that the bearing sleeve 407 fits with the shaft head of the gas expansion shaft 6, and tighten the adjusting nut 406; S4, merge the gland unit 2, tighten the locking bolt 207, and fix the locking bolt 207 to the semicircular ring support plate 103; S5. Start the proximity switch 302. When the equipment is running, if the gap between the semicircular support plate 103 and the second cover ear 204 is greater than the set value, the proximity switch 302 sends a signal for warning.

[0025] The working principle of the present invention is as follows: the revolving material tray of the reel adopts the method of supporting the material by an air-expanding shaft, the anti-falling device of the reel cooperates with the top cone 7 to fix the air-expanding shaft 6, and after the air-expanding shaft 6 is installed, the pressure cover unit 2 is locked; the anti-falling device of the reel mainly supports the air-expanding shaft 6 and the material roll to prevent sudden air and power outages, and the material roll falls and injures the staff; at the same time, the falling frame is equipped with a locking pressure cover unit 2 and a proximity switch unit 3 to prevent the material roll from flipping and falling when the rotary frame is connected to change materials; at the same time, an eccentric bearing unit 4 is designed under the air-expanding shaft to support the air-expanding shaft 6, thereby preventing the air-expanding shaft 6 from being cantilevered too long and causing insufficient support strength, thereby playing a safety protection function.

[0026] Example 1 like Figure 1 As shown, the anti-falling device for reeling and unwinding proposed in this embodiment includes an anti-falling frame 1, to which a pressure cover unit 2 is connected, and a proximity switch unit 3 is also arranged between the pressure cover unit 2 and the anti-falling frame 1, and a pair of eccentric bearing units 4 are also connected to the anti-falling frame 1, and the eccentric bearing unit 4 is arranged below the pressure cover unit 2.

[0027] Example 2 like Figure 1-3 As shown, the reel anti-dropping device proposed in this embodiment includes an anti-dropping frame 1, a gland unit 2 is connected to the anti-dropping frame 1, a proximity switch unit 3 is further provided between the gland unit 2 and the anti-dropping frame 1, and a pair of eccentric bearing units 4 are further connected to the anti-dropping frame 1, and the eccentric bearing units 4 are provided below the gland unit 2. The anti-dropping frame 1 includes a flange 101, a plurality of connecting through holes 104 are evenly provided on the flange 101, a semicircular tube 102 is fixedly connected to one side of the flange 101, the axis of the semicircular tube 102 coincides with the axis of the flange 101, a semicircular ring support plate 103 is fixedly connected to the other end of the semicircular tube 102, and a shaft head lower through hole 105 is provided at the axis of the semicircular ring support plate 103. Two eccentric shaft holes 106 are formed on the semicircular support plate 103 . The two eccentric shaft holes 106 are located directly below the shaft head lower through hole 105 . The two eccentric shaft holes 106 are symmetrically distributed along the symmetry line of the semicircular support plate 103 .

[0028] Example 3 like Figure 1-4As shown, the reel anti-dropping device proposed in this embodiment includes an anti-dropping frame 1, a gland unit 2 is connected to the anti-dropping frame 1, a proximity switch unit 3 is further provided between the gland unit 2 and the anti-dropping frame 1, and a pair of eccentric bearing units 4 are further connected to the anti-dropping frame 1, and the eccentric bearing units 4 are provided below the gland unit 2. The anti-dropping frame 1 includes a flange 101, a plurality of connecting through holes 104 are evenly provided on the flange 101, a semicircular tube 102 is fixedly connected to one side of the flange 101, the axis of the semicircular tube 102 coincides with the axis of the flange 101, a semicircular ring support plate 103 is fixedly connected to the other end of the semicircular tube 102, and a shaft head lower through hole 105 is provided at the axis of the semicircular ring support plate 103. Two eccentric shaft holes 106 are provided on the semicircular support plate 103. The two eccentric shaft holes 106 are arranged directly below the lower through hole 105 of the shaft head. The two eccentric shaft holes 106 are symmetrically distributed along the symmetry line of the semicircular support plate 103. The gland unit 2 includes a first gland ear 201. The first gland ear 201 is provided with a first through hole. One end of the first gland ear 201 is fixedly connected to a gland body 202. One side of the gland body 202 is provided with a through hole 203 on the shaft head. The other end of the gland body 202 is fixedly connected to a second gland ear 204. The first gland ear 201 is rotatably connected to a fixed support 206 via a pin 205. The fixed support 206 is fixedly connected to the semicircular support plate 103 via two bolts. A locking bolt through hole is provided on the second gland ear 204. The locking bolt through hole is provided on the second gland ear 204. A locking bolt 207 is passed through the hole, one end of the locking bolt 207 is connected to the semicircular support plate 103 by threading, and the other end of the locking bolt 207 is connected to the locking handwheel 208 by threading. The locking handwheel 208 is also provided with a limit through hole perpendicular to the axis of the locking bolt 207, and a limit screw is connected in the limit through hole by threading, and one end of the limit screw is in contact with the locking bolt 207, the second gland ear 204 is attached to the semicircular support plate 103, and a gap is provided between the first gland ear 201 and the semicircular support plate 103. The axes of the first through hole and the through hole 203 on the shaft head are parallel to the axis of the through hole 105 under the shaft head.

[0029] Example 4 like Figure 1-5As shown, the reel anti-dropping device proposed in this embodiment includes an anti-dropping frame 1, a gland unit 2 is connected to the anti-dropping frame 1, a proximity switch unit 3 is further provided between the gland unit 2 and the anti-dropping frame 1, and a pair of eccentric bearing units 4 are further connected to the anti-dropping frame 1, and the eccentric bearing units 4 are provided below the gland unit 2. The anti-dropping frame 1 includes a flange 101, a plurality of connecting through holes 104 are evenly provided on the flange 101, a semicircular tube 102 is fixedly connected to one side of the flange 101, the axis of the semicircular tube 102 coincides with the axis of the flange 101, a semicircular ring support plate 103 is fixedly connected to the other end of the semicircular tube 102, and a shaft head lower through hole 105 is provided at the axis of the semicircular ring support plate 103. Two eccentric shaft holes 106 are provided on the semicircular support plate 103. The two eccentric shaft holes 106 are arranged directly below the lower through hole 105 of the shaft head. The two eccentric shaft holes 106 are symmetrically distributed along the symmetry line of the semicircular support plate 103. The gland unit 2 includes a first gland ear 201. The first gland ear 201 is provided with a first through hole. One end of the first gland ear 201 is fixedly connected to a gland body 202. One side of the gland body 202 is provided with a through hole 203 on the shaft head. The other end of the gland body 202 is fixedly connected to a second gland ear 204. The first gland ear 201 is rotatably connected to a fixed support 206 via a pin 205. The fixed support 206 is fixedly connected to the semicircular support plate 103 via two bolts. A locking bolt through hole is provided on the second gland ear 204. The locking bolt through hole is provided on the second gland ear 204. A locking bolt 207 is passed through the hole, one end of the locking bolt 207 is connected to the semicircular support plate 103 by threading, and the other end of the locking bolt 207 is connected to the locking handwheel 208 by threading. The locking handwheel 208 is also provided with a limit through hole perpendicular to the axis of the locking bolt 207, and a limit screw is connected in the limit through hole by threading, and one end of the limit screw is in contact with the locking bolt 207, the second gland ear 204 is attached to the semicircular support plate 103, and a gap is provided between the first gland ear 201 and the semicircular support plate 103. The axes of the first through hole and the through hole 203 on the shaft head are parallel to the axis of the through hole 105 under the shaft head. The eccentric shaft hole 106 is a stepped hole, and an eccentric bearing unit 4 is passed through the eccentric shaft hole 106. The eccentric bearing unit 4 includes a first shaft 401, one end of the first shaft 401 is fixedly connected to the second shaft 402, and the other end of the second shaft 402 is fixedly connected to the third shaft 403. The first shaft 401 and the second shaft 402 are both passed through the eccentric shaft hole 106. The surface of the first shaft 401 is provided with threads, and the part of the first shaft 401 that passes through the eccentric shaft hole 106 is connected to an adjusting nut 406 through threads. The axis of the third shaft 403 does not coincide with the axis of the second shaft 402. A bearing 404 is sleeved on the third shaft 403, and one side of the inner ring of the bearing 404 contacts the second shaft 402. A retaining spring groove is provided on the third shaft 403, and a retaining spring 405 is assembled in the retaining spring groove. The other side of the inner ring of the bearing 404 contacts the retaining spring 405, and a bearing sleeve 407 is sleeved on the outer ring of the bearing 404.

[0030] Example 5 like Figure 1-5As shown, the reel anti-dropping device proposed in this embodiment includes an anti-dropping frame 1, a gland unit 2 is connected to the anti-dropping frame 1, a proximity switch unit 3 is further provided between the gland unit 2 and the anti-dropping frame 1, and a pair of eccentric bearing units 4 are further connected to the anti-dropping frame 1, and the eccentric bearing units 4 are provided below the gland unit 2. The anti-dropping frame 1 includes a flange 101, a plurality of connecting through holes 104 are evenly provided on the flange 101, a semicircular tube 102 is fixedly connected to one side of the flange 101, the axis of the semicircular tube 102 coincides with the axis of the flange 101, a semicircular ring support plate 103 is fixedly connected to the other end of the semicircular tube 102, and a shaft head lower through hole 105 is provided at the axis of the semicircular ring support plate 103. Two eccentric shaft holes 106 are provided on the semicircular support plate 103. The two eccentric shaft holes 106 are arranged directly below the lower through hole 105 of the shaft head. The two eccentric shaft holes 106 are symmetrically distributed along the symmetry line of the semicircular support plate 103. The gland unit 2 includes a first gland ear 201. The first gland ear 201 is provided with a first through hole. One end of the first gland ear 201 is fixedly connected to a gland body 202. One side of the gland body 202 is provided with a through hole 203 on the shaft head. The other end of the gland body 202 is fixedly connected to a second gland ear 204. The first gland ear 201 is rotatably connected to a fixed support 206 via a pin 205. The fixed support 206 is fixedly connected to the semicircular support plate 103 via two bolts. A locking bolt through hole is provided on the second gland ear 204. The locking bolt through hole is provided on the second gland ear 204. A locking bolt 207 is passed through the hole, one end of the locking bolt 207 is connected to the semicircular support plate 103 by threading, and the other end of the locking bolt 207 is connected to the locking handwheel 208 by threading. The locking handwheel 208 is also provided with a limit through hole perpendicular to the axis of the locking bolt 207, and a limit screw is connected in the limit through hole by threading, and one end of the limit screw is in contact with the locking bolt 207, the second gland ear 204 is attached to the semicircular support plate 103, and a gap is provided between the first gland ear 201 and the semicircular support plate 103. The axes of the first through hole and the through hole 203 on the shaft head are parallel to the axis of the through hole 105 under the shaft head. The eccentric shaft hole 106 is a stepped hole, and an eccentric bearing unit 4 is passed through the eccentric shaft hole 106. The eccentric bearing unit 4 includes a first shaft 401, one end of the first shaft 401 is fixedly connected to the second shaft 402, and the other end of the second shaft 402 is fixedly connected to the third shaft 403. The first shaft 401 and the second shaft 402 are both passed through the eccentric shaft hole 106. The surface of the first shaft 401 is provided with threads, and the part of the first shaft 401 that passes through the eccentric shaft hole 106 is connected to an adjusting nut 406 through threads. The axis of the third shaft 403 does not coincide with the axis of the second shaft 402. A bearing 404 is sleeved on the third shaft 403, and one side of the inner ring of the bearing 404 contacts the second shaft 402. A retaining spring groove is provided on the third shaft 403, and a retaining spring 405 is assembled in the retaining spring groove. The other side of the inner ring of the bearing 404 contacts the retaining spring 405, and a bearing sleeve 407 is sleeved on the outer ring of the bearing 404.The proximity switch unit 3 includes a proximity switch bracket 301, which is fixed to the surface of the semicircular ring support plate 103 by bolts. The semicircular ring support plate 103 is penetrated by a proximity switch 302. The proximity switch 302 is fixed to the proximity switch bracket 301 by a pair of nuts. The axis of the proximity switch 302 is aligned with the axis of the locking bolt 207. It also includes a detection block 303, which is fixed to the side of the second pressure cover ear 204 by bolts. The position of the detection block 303 is aligned with the proximity switch 302.

[0031] Example 6 like Figure 6 and Figure 7 As shown, the method for preventing the reel from falling off proposed in this embodiment adopts a reel-to-reel anti-falling device, and specifically includes the following steps: S1. Install the anti-falling device for the unwinding and rewinding roll on the rotating arm 5 of the unwinding and rewinding rewinding rotary material tray. The specific process of S1 is as follows: the unwinding and rewinding rewinding rotary material tray comprises a pair of rotating arms 5, and four top cones 7 are symmetrically installed on the pair of rotating arms 5. The flanges 101 of the four anti-falling devices for the unwinding and rewinding roll are fixed to the rotating arms 5 of the unwinding and rewinding rewinding rotary material tray by bolts. Every two anti-falling devices for the unwinding and rewinding roll form a group, and each flange 101 is arranged at the corresponding top cone 7.

[0032] S2. Loosen the locking bolt 207 to separate the locking bolt 207 from the semicircular support plate 103 and open the gland unit 2: S3, put the two shaft heads of the gas expansion shaft 6 into the corresponding semicircular support plates 103 respectively, rotate the eccentric bearing unit 4, so that the bearing sleeve 407 fits with the shaft head of the gas expansion shaft 6, and tighten the adjusting nut 406; S4, merge the gland unit 2, tighten the locking bolt 207, and fix the locking bolt 207 to the semicircular ring support plate 103; S5. Start the proximity switch 302. When the equipment is running, if the gap between the semicircular support plate 103 and the second cover ear 204 is greater than the set value, the proximity switch 302 sends a signal for warning.

Claims

1. The reel anti-falling device is characterized by: The invention comprises an anti-dropping frame (1), the anti-dropping frame (1) is connected to a pressure cover unit (2), a proximity switch unit (3) is arranged between the pressure cover unit (2) and the anti-dropping frame (1), and the anti-dropping frame (1) is also connected to a pair of eccentric bearing units (4), the eccentric bearing units (4) are arranged below the pressure cover unit (2).

2. The reel-and-roll anti-falling device according to claim 1, characterized in that: The anti-drop frame (1) comprises a flange (101), a plurality of connecting through holes (104) are evenly formed on the flange (101), a semicircular tube (102) is fixedly connected to one side of the flange (101), the axis of the semicircular tube (102) coincides with the axis of the flange (101), a semicircular ring support plate (103) is fixedly connected to the other end of the semicircular tube (102), and a shaft head lower through hole (105) is formed at the axis of the semicircular ring support plate (103).

3. The anti-falling device for reeling and unreeling according to claim 2, characterized in that: Two eccentric shaft holes (106) are formed on the semicircular ring support plate (103), the two eccentric shaft holes (106) are arranged directly below the shaft head lower through hole (105), and the two eccentric shaft holes (106) are symmetrically distributed along the symmetry line of the semicircular ring support plate (103).

4. The anti-falling device for reeling and unreeling according to claim 3 is characterized in that: The gland unit (2) comprises a first gland ear (201), the first gland ear (201) is provided with a first through hole, one end of the first gland ear (201) is fixedly connected to a gland body (202), one side of the gland body (202) is provided with a through hole (203) on the shaft head, the other end of the gland body (202) is fixedly connected to a second gland ear (204), the first gland ear (201) is rotatably connected to a fixed support (206) via a pin (205), the fixed support (206) is fixedly connected to the semicircular support plate (103) via two bolts, the second gland ear (204) is provided with a locking bolt through hole, the locking bolt through hole is provided on the top of the second gland ear (204), A locking bolt (207) is inserted into the bolt through hole, one end of the locking bolt (207) is threadedly connected to the semicircular support plate (103), the other end of the locking bolt (207) is threadedly connected to a locking hand wheel (208), a limiting through hole perpendicular to the axis of the locking bolt (207) is also provided on the locking hand wheel (208), a limiting screw is threadedly connected in the limiting through hole, one end of the limiting screw is in contact with the locking bolt (207), the second gland ear (204) is in contact with the semicircular support plate (103), and a gap is provided between the first gland ear (201) and the semicircular support plate (103).

5. The anti-falling device for reeling and unreeling according to claim 4, characterized in that: The axes of the first through hole and the through hole (203) on the shaft head are both parallel to the axis of the through hole (105) below the shaft head.

6. The anti-falling device for reeling and unreeling according to claim 5, characterized in that: The eccentric shaft hole (106) is a stepped hole. An eccentric bearing unit (4) is inserted into the eccentric shaft hole (106). The eccentric bearing unit (4) comprises a first shaft (401). One end of the first shaft (401) is fixedly connected to a second shaft (402). The other end of the second shaft (402) is fixedly connected to a third shaft (403). Both the first shaft (401) and the second shaft (402) are inserted into the eccentric shaft hole (106). A thread is formed on the surface of the first shaft (401). The first shaft (401) is inserted into the eccentric shaft hole (106). 106) is connected to an adjusting nut (406) by a thread, the axis of the third shaft (403) does not coincide with the axis of the second shaft (402), a bearing (404) is sleeved on the third shaft (403), one side of the inner ring of the bearing (404) is in contact with the second shaft (402), a retaining ring groove is provided on the third shaft (403), a retaining ring (405) is installed in the retaining ring groove, the other side of the inner ring of the bearing (404) is in contact with the retaining ring (405), and a bearing sleeve (407) is sleeved on the outer ring of the bearing (404).

7. The anti-falling device for reeling and unreeling according to claim 6, characterized in that: The proximity switch unit (3) comprises a proximity switch bracket (301), the proximity switch bracket (301) being fixedly connected to the surface of the semicircular support plate (103) by means of bolts, a proximity switch (302) being inserted through the semicircular support plate (103), the proximity switch (302) being fixedly connected to the proximity switch bracket (301) by means of a pair of nuts, the axis of the proximity switch (302) being aligned with the axis of the locking bolt (207), and a detection block (303) being fixedly connected to the side surface of the second gland ear (204) by means of bolts, the position of the detection block (303) being aligned with the proximity switch (302).

8. A method for preventing a reel from falling off, using the reel-in and reel-out anti-falling device as claimed in claim 7, characterized in that: The specific steps include: S1. Install the unwinding and rewinding anti-falling device on the rotating arm (5) of the unwinding and rewinding rotary material tray; S2. Loosen the locking bolt (207) to separate the locking bolt (207) from the semicircular support plate (103) and open the gland unit (2): S3, respectively placing the two shaft heads of the gas expansion shaft (6) into the corresponding semicircular support plates (103), rotating the eccentric bearing unit (4) so ​​that the bearing sleeve (407) fits with the shaft head of the gas expansion shaft (6), and tightening the adjusting nut (406); S4, combining the gland unit (2), and tightening the locking bolt (207) to securely connect the locking bolt (207) to the semicircular support plate (103); S5, starting the proximity switch (302). When the equipment is running, if the gap between the semicircular ring support plate (103) and the second gland ear (204) is greater than a set value, the proximity switch (302) sends a signal for warning.

9. The method for preventing the reel from falling off according to claim 8, characterized in that: The specific process of S1 is as follows: The reel rotating material tray comprises a pair of rotating arms (5), and four top cones (7) are symmetrically mounted on the pair of rotating arms (5). The flanges (101) of the four reel anti-falling devices are fixed to the rotating arms (5) of the reel rotating material tray by bolts, and every two reel anti-falling devices form a group, and each flange (101) is arranged at the corresponding top cone (7).

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