Intelligent suspension conveying device facilitating feeding and discharging

Abstract

The application discloses a kind of intelligent suspension conveying devices facilitating feeding and discharging, belong to suspension conveying device technical field.The intelligent suspension conveying device facilitating feeding and discharging includes mounting bracket, the bottom of the mounting bracket is fixedly connected with slide rail, and the outer wall of the slide rail is provided with driving walking slide base.The application is driven by motor drive bidirectional screw rod to drive both sides connecting block and mounting plate synchronous transverse movement, and in the moving process, it is pushed to move rod sliding by fixed ring touching fixed plate, further in the cooperation of helical groove and slide axle A drive worm sleeve, worm wheel and movable rod rotation, again by connecting rod A drive sliding block along sliding groove sliding, realize the longitudinal position adjustment of L-shaped frame B relative to L-shaped frame A, and while adjusting transverse spacing to adapt to different diameter wheel hub, realize the synchronous adjustment of longitudinal spacing between upper and lower supporting plate and middle supporting plate, meet the adaptation to different specifications wheel hub, improve feeding and discharging efficiency.

Description

Technical Field

[0001] This invention belongs to the technical field of overhead conveyor devices, specifically relating to an intelligent overhead conveyor device that facilitates loading and unloading. Background Technology

[0002] As a highly efficient material handling equipment, overhead conveyor systems are widely used in various fields such as automobile manufacturing, electronic assembly, and warehousing and logistics. They achieve aerial material transport through suspended tracks, effectively saving ground space and improving conveying efficiency.

[0003] Announcement No. CN118753730B discloses an automatic loading and unloading overhead conveyor line; it relates to the technical field of automatic loading and unloading overhead conveyor lines, including a base, with a fixed column vertically fixed to the top surface of the base, and a drive assembly, a loading and unloading assembly, and a clamping assembly at the lower end of the base. The aforementioned application uses a combination of clamping plates and circular push rods to facilitate material clamping; however, the lateral and longitudinal spacing of its clamping assembly is fixed, thus it cannot adapt to hubs of different diameters and heights. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides an intelligent overhead conveyor device that facilitates loading and unloading, thus solving the problems mentioned in the background section.

[0005] To achieve the above objectives, the present invention provides an intelligent suspended conveying device for easy loading and unloading of materials, including a mounting frame, a slide rail fixedly connected to the bottom of the mounting frame, a drive sliding block provided on the outer wall of the slide rail, a hydraulic cylinder fixedly connected to the bottom of the drive sliding block, and a rectangular connecting frame fixedly connected to the output end of the hydraulic cylinder. A motor is fixedly connected to the side of the rectangular connecting frame. A double-acting lead screw is rotatably connected to the inner side of the rectangular connecting frame. A connecting block is threaded onto the outer wall of the double-acting lead screw. A mounting plate is fixedly connected to the bottom of the connecting block. A sliding groove is formed in the middle of the mounting plate. A mounting shaft is rotatably connected to the back of the mounting plate. A movable rod A is fixedly connected to the end of the mounting shaft away from the mounting plate. Connecting rod A is hinged to both ends of the movable rod A via pins. A slider is hinged to the other end of the connecting rod A via a pin. The slider is slidably connected inside the sliding groove. A worm gear is fixedly sleeved on the outer wall of the mounting shaft. A fixing block A is fixedly connected to the back of the mounting plate. A worm sleeve is rotatably connected to the inner side of the fixing block A. The worm sleeve meshes with the worm gear. A fixing block B is fixedly connected to the inner side of the mounting plate. A moving rod slides through the middle of the fixing block B. A spiral groove is formed on the outer wall of the moving rod. A sliding shaft A is rotatably connected inside the worm sleeve. A fixing plate is fixedly connected to the bottom of the rectangular connecting frame.

[0006] Furthermore, one end of the moving rod slides through the worm gear sleeve and the fixed block A, and the sliding shaft A is slidably connected inside the spiral groove.

[0007] Furthermore, a through groove is provided at the bottom of the rectangular connecting frame, and the two sides of the connecting block are slidably connected to the inner wall of the through groove.

[0008] Furthermore, a fixing ring is fixedly connected to one end of the moving rod near the fixing plate, and a spring A is fixedly connected between the fixing block B and the fixing ring.

[0009] Furthermore, an L-shaped frame A is fixedly connected to the front of the mounting plate, and an L-shaped frame B is fixedly connected to the front of the slider. A connecting rod slides through the top of the L-shaped frames A and B. A support plate is fixedly connected to one end of the connecting rod inside the L-shaped frames A and B, and a trapezoidal plate is fixedly connected to the other end of the connecting rod. A sliding rod slides through the side of the L-shaped frame A. A side positioning block is fixedly connected to one end of the sliding rod inside the L-shaped frames A and B, and a roller is fitted to the outer end of the sliding rod.

[0010] Furthermore, the inclined surface of the trapezoidal plate is in contact with the roller, and the inclined surface of the trapezoidal plate slopes from the inside to the outside.

[0011] Furthermore, a spring B is fixedly connected to the outer wall of the L-shaped frame A and the L-shaped frame B, and the other end of the spring B is fixedly connected to the base of the roller.

[0012] Furthermore, an L-shaped plate is fixedly connected to the upper end of the rectangular connecting frame, and a lifting protective plate slides through the upper side of the L-shaped plate. An installation groove is opened at the bottom of the lifting protective plate, and a rotating rod is rotatably connected to the inner wall of the installation groove. A fall arrestor plate is fixedly sleeved on the outer wall of the rotating rod. A rotating shaft is rotatably connected to the side of the lifting protective plate, and a transmission wheel A is fixedly sleeved on the outer wall of the rotating shaft. A movable rod B is fixedly connected to the outer wall of the rotating shaft. One end of the rotating rod rotatably passes through the lifting protective plate and is fixedly sleeved with the transmission wheel B. A transmission belt is wound around the outer walls of the transmission wheel A and the transmission wheel B. A trigger block is fixedly connected to the upper end of the L-shaped plate.

[0013] Furthermore, a torsion spring is fixedly connected between the fall arrestor plate and the inner wall of the mounting groove, a mounting block is fixedly connected to the inner side of the lifting protective plate, a telescopic rod with a built-in spring is fixedly connected to the mounting block, and the bottom of the telescopic rod is fixedly connected to the L-shaped plate.

[0014] The advantages of this application are: (1) This application uses a motor to drive a bidirectional lead screw to move the connecting blocks and mounting plates on both sides in a synchronous lateral direction. During the movement, the moving rod is pushed to slide by the fixed ring touching the fixed plate. Then, under the cooperation of the spiral groove and the sliding shaft A, the worm sleeve, worm wheel and movable rod are driven to rotate. Then, the slider is driven to slide along the slide groove by the connecting rod A, so as to realize the longitudinal position adjustment of the L-shaped frame B relative to the L-shaped frame A. While adjusting the lateral spacing to adapt to different diameter hubs, the longitudinal spacing between the upper and lower support plates and the middle support plate is adjusted synchronously, which meets the adaptation to different specifications of hubs and improves the loading and unloading efficiency.

[0015] (2) In this application, after the hub is placed, the support plate is lowered under its own weight, and then the trapezoidal plate is moved down synchronously through the connecting rod. The inclined surface of the trapezoidal plate pushes the roller and the slide rod to slide laterally, so that the side positioning block clamps the hub from both sides, realizing automatic centering and lateral clamping during the hub placement process, which improves the positioning reliability and the convenience of loading and unloading.

[0016] (3) This application moves the fall arrestor plate to below the fixed component, and at the same time the trigger block contacts the movable rod and drives the rotating shaft to rotate. The drive wheel and drive belt drive the rotating rod to rotate, so that the fall arrestor plate rotates from vertical downward to below the fixed component, thereby enabling the fall arrestor plate to support the fixed component and prevent it from falling further, thus improving the safety of equipment operation. Attached Figure Description

[0017] Figure 1 This is an overall diagram of the invention; Figure 2 This is a partial back view of the present invention; Figure 3 This is the invention Figure 2 Enlarged view of point A in the middle; Figure 4 This is the invention Figure 2 Enlarged view at point B in the middle; Figure 5 This is the invention Figure 2 Enlarged view at point C; Figure 6 This is a partial perspective view of the present invention; Figure 7 This is the invention Figure 6 Enlarged view at point D; Figure 8 This is the invention Figure 6 Enlarged view of point E in the middle.

[0018] Explanation of key figure labels: 1. Mounting bracket; 21. Slide rail; 22. Drive slide block; 23. Hydraulic cylinder; 24. Rectangular connecting frame; 31. Motor; 32. Double-acting lead screw; 33. Connecting block; 34. Mounting plate; 35. Slide groove; 36. Mounting shaft; 37. Movable rod A; 38. Connecting rod A; 39. Slider; 310. Worm gear; 311. Fixed block A; 312. Worm sleeve; 313. Fixed block B; 314. Moving rod; 315. Fixed ring; 316. Helical groove; 317. Slide shaft A; 318. Spring A; 32. 0. Through groove; 321. Fixing plate; 41. L-shaped frame A; 42. L-shaped frame B; 43. Connecting rod; 44. Support plate; 45. Trapezoidal plate; 46. Sliding rod; 47. Side positioning block; 48. Roller; 49. Spring B; 51. L-shaped plate; 52. Lifting guard plate; 53. Rotating rod; 54. Anti-fall plate; 55. Rotating shaft; 56. Transmission wheel A; 57. Movable rod B; 58. Transmission wheel B; 59. Transmission belt; 510. Trigger block; 511. Torsion spring; 512. Mounting block; 513. Telescopic rod. Detailed Implementation

[0019] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are merely some, not all, of the embodiments of the present application. All other embodiments obtained by those skilled in the art based on the embodiments of the present application without creative effort should fall within the scope of protection of the present application.

[0020] Example 1, as Figures 1-5 As shown, an intelligent suspended conveying device for easy loading and unloading includes a mounting frame 1, a slide rail 21 fixedly connected to the bottom of the mounting frame 1, a drive sliding slide 22 provided on the outer wall of the slide rail 21, a hydraulic cylinder 23 fixedly connected to the bottom of the drive sliding slide 22, and a rectangular connecting frame 24 fixedly connected to the output end of the hydraulic cylinder 23. A motor 31 is fixedly connected to the side of a rectangular connecting frame 24. A bidirectional lead screw 32 is rotatably connected to the inner side of the rectangular connecting frame 24. A connecting block 33 is threaded onto the outer wall of the bidirectional lead screw 32. A mounting plate 34 is fixedly connected to the bottom of the connecting block 33. A sliding groove 35 is provided in the middle of the mounting plate 34. A mounting shaft 36 is rotatably connected to the back of the mounting plate 34. A movable rod A37 is fixedly connected to one end of the mounting shaft 36 away from the mounting plate 34. A connecting rod A38 is hinged to both ends of the movable rod A37 by a pin. A slider 39 is hinged to the other end of the connecting rod A38 by a pin. The slider 39 slides. Inside the slide groove 35, a worm gear 310 is fixedly sleeved on the outer wall of the mounting shaft 36. A fixing block A311 is fixedly connected to the back of the mounting plate 34. A worm sleeve 312 is rotatably connected to the inner side of the fixing block A311. The worm sleeve 312 meshes with the worm gear 310. A fixing block B313 is fixedly connected to the inner side of the mounting plate 34. A moving rod 314 slides through the middle of the fixing block B313. A spiral groove 316 is opened on the outer wall of the moving rod 314. A sliding shaft A317 is rotatably connected inside the worm sleeve 312. A fixing plate 321 is fixedly connected to the bottom of the rectangular connecting frame 24.

[0021] One end of the moving rod 314 slides through the worm sleeve 312 and the fixed block A311, and the sliding shaft A317 is slidably connected inside the spiral groove 316. Thus, when the moving rod 314 moves, it can drive the worm sleeve 312 to rotate through the cooperation of the spiral groove 316 and the sliding shaft A317, thereby driving the worm wheel 310 and the moving rod A37 to rotate.

[0022] The bottom of the rectangular connecting frame 24 is provided with a through groove 320. The two sides of the connecting block 33 are slidably connected to the inner wall of the through groove 320. Thus, when the connecting block 33 slides, it can be guided and limited by the inner wall of the through groove 320 to ensure the straightness of the synchronous movement of the two mounting plates 34.

[0023] A fixed ring 315 is fixedly connected to one end of the moving rod 314 near the fixed plate 321. A spring A318 is fixedly connected between the fixed block B313 and the fixed ring 315. Thus, when the moving rod 314 moves, the spring A318 can store force to reset, ensuring that the fixed ring 315 and the fixed plate 321 can reliably contact and disengage.

[0024] When the above equipment is used, since the diameter of the wheel hub is different, in order to ensure that the two sides of the wheel hub can be placed on the upper end of the support plate 44, it is necessary to adjust the distance between the two side mounting plates 34 and the front L-shaped frame A41 and L-shaped frame B42. At the same time, it is necessary to adjust the distance between the upper and lower L-shaped frame B42 and the middle L-shaped frame A41. First, start the motor 31. The motor 31 drives the bidirectional lead screw 32 to rotate. The bidirectional lead screw 32 drives the two connecting blocks 33 to move closer or further apart along the through groove 320. The connecting blocks 33 drive the mounting plate 34 at their bottom to move synchronously, thereby realizing the lateral spacing adjustment of the two-sided support structure to adapt to hubs of different diameters. During the process of the two-sided mounting plates 34 moving towards the middle, the fixing ring 315 at the end of the moving rod 314 will touch the fixing plate 321. As the mounting plate 34 continues to move towards the center, the fixed plate 321 pushes the fixed ring 315 back, causing the moving rod 314 to slide away from the fixed plate 321 against the elastic force of the spring A318. When the moving rod 314 slides, the spiral groove 316 on its outer wall drives the sliding shaft A317, which drives the worm sleeve 312 to rotate. The worm sleeve 312 drives the worm wheel 310 that meshes with it to rotate. The worm wheel 310 drives the movable rod A37 to rotate through the mounting shaft 36. The two ends of the movable rod A37 push the slider 39 to slide along the sliding groove 35 in the middle of the mounting plate 34 through the connecting rod A38. The slider 39 causes the L-shaped frame B42 on its front to generate longitudinal displacement relative to the fixed L-shaped frame A41, thereby automatically adjusting the distance between the upper and lower support plates 44 and the middle support plate 44.

[0025] Example 2, as Figures 6-7 As shown, based on Embodiment 1, an L-shaped frame A41 is fixedly connected to the front of the mounting plate 34, and an L-shaped frame B42 is fixedly connected to the front of the slider 39. A connecting rod 43 slides through the top of the L-shaped frame A41 and the L-shaped frame B42. A support plate 44 is fixedly connected to one end of the connecting rod 43 inside the L-shaped frame A41 and the L-shaped frame B42. A trapezoidal plate 45 is fixedly connected to the other end of the connecting rod 43. A sliding rod 46 slides through the side of the L-shaped frame A41. A side positioning block 47 is fixedly connected to one end of the sliding rod 46 inside the L-shaped frame A41 and the L-shaped frame B42. A roller 48 is fitted to the outer end of the sliding rod 46.

[0026] The inclined surface of the trapezoidal plate 45 is in contact with the roller 48. The inclined surface of the trapezoidal plate 45 is inclined from the inside to the outside. Thus, when the support plate 44 descends, the roller 48 can be pushed to move laterally by the inclined surface, so as to realize the automatic centering and clamping driven by the self-weight of the hub.

[0027] Spring B49 is fixedly connected to the outer wall of L-shaped frame A41 and L-shaped frame B42. The other end of spring B49 is fixedly connected to the base of roller 48. Spring B49 provides continuous elastic clamping force, so that the side positioning block 47 can adapt to the wheel hub edge of different thickness or shape, and avoid rigidly pinching the wheel hub surface.

[0028] In practical use, the above equipment first uses hydraulic cylinder 23 to lower the rectangular connecting frame 24 and the supporting components below to a suitable height for manual or robotic arm placement of the wheel hub. When the wheel hub is placed, its bottom edge first contacts the upper surface of the support plate 44. As the wheel hub is gradually lowered, under the action of the wheel hub's own weight, the support plate 44 overcomes the supporting force of the connecting rod 43 and the trapezoidal plate 45 and moves downward. The support plate 44 drives the trapezoidal plate 45 to descend synchronously through the connecting rod 43. When the inclined surface of the trapezoidal plate 45 moves downward, its inclined surface is in contact with the roller 48. The inclined surface pushes the roller 48 to slide inward. The roller 48 drives the slide rod 46 and the side positioning block 47 fixedly connected to the end of the slide rod 46 to move towards the hub, so that the side positioning block 47 clamps the side of the hub from both sides, realizing automatic centering and clamping positioning. When the hydraulic cylinder 23 is lifted and the hub is removed, the support plate 44 loses the pressure of the hub's own weight and returns to its original position under the action of the spring B49. At the same time, the slide rod 46 and the side positioning block 47 retract away from the hub, releasing the lateral clamping of the hub and waiting for the next feeding.

[0029] Example 3, as Figure 2 , Figure 6 , Figure 8 As shown, based on Embodiment 1 or Embodiment 2, an L-shaped plate 51 is fixedly connected to the upper end of the rectangular connecting frame 24. A lifting protective plate 52 slides through the upper side of the L-shaped plate 51. An installation groove is opened at the bottom of the lifting protective plate 52. A rotating rod 53 is rotatably connected to the inner wall of the installation groove. A fall arrestor plate 54 is fixedly sleeved on the outer wall of the rotating rod 53. A rotating shaft 55 is rotatably connected to the side of the lifting protective plate 52. A transmission wheel A56 is fixedly sleeved on the outer wall of the rotating shaft 55. A movable rod B57 is fixedly connected to the outer wall of the rotating shaft 55. One end of the rotating rod 53 rotatably passes through the lifting protective plate 52 and is fixedly sleeved with a transmission wheel B58. A transmission belt 59 is wound around the outer walls of the transmission wheel A56 and the transmission wheel B58. A trigger block 510 is fixedly connected to the upper end of the L-shaped plate 51.

[0030] A torsion spring 511 is fixedly connected between the fall arrestor plate 54 and the inner wall of the mounting groove. An installation block 512 is fixedly connected to the inner side of the lifting protective plate 52. A telescopic rod 513 with a built-in spring is fixedly connected to the installation block 512. The bottom of the telescopic rod 513 is fixedly connected to the L-shaped plate 51.

[0031] When the above equipment is used, after the wheel hub is fixed, the hydraulic cylinder 23 drives the rectangular connecting frame 24 and the fixing components below to rise as a whole, in preparation for suspension and transportation. During the rising process, the lifting protective plate 52 at the upper end of the L-shaped plate 51 rises together with the rectangular connecting frame 24. When the top of the lifting protective plate 52 contacts the lower surface of the mounting frame 1, the lifting protective plate 52 can no longer rise, while the rectangular connecting frame 24 and the L-shaped plate 51 continue to rise under the drive of the hydraulic cylinder 23. At this time, the L-shaped plate 51 moves upward relative to the lifting protective plate 52, the telescopic rod 513 is compressed, and the anti-fall plate 54 in the mounting groove at the bottom of the lifting protective plate 52 moves downward relative to the rectangular connecting frame 24 along with the lifting protective plate 52, gradually moving to the bottom of the entire fixed assembly. As the L-shaped plate 51 continues to rise, the trigger block 510 fixedly connected to the upper end of the L-shaped plate 51 rises accordingly. When the anti-fall plate 54 has completely moved to the bottom of the fixed assembly, the trigger block 510 contacts the movable rod B57 rotatably connected to the side of the lifting protective plate 52. The trigger block 510 continues to rise, pushing the movable rod B57 to swing upward. The movable rod B57 drives the rotating shaft 55 to rotate, and the transmission wheel A56 on the rotating shaft 55 rotates accordingly. Through the transmission belt 59, the transmission wheel B58 and the rotating rod 53 rotate. The rotating rod 53 overcomes the elastic force of the torsion spring 511, causing the fall arrestor plate 54 to rotate and unfold from a vertical downward state to a horizontal state, so that the fall arrestor plate 54 is located directly below the rectangular connecting frame 24 and the lower fixing component.

[0032] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An intelligent overhead conveyor device for easy loading and unloading, comprising a mounting frame, characterized in that, The bottom of the mounting bracket is fixedly connected to a slide rail, the outer wall of the slide rail is provided with a drive slide block, the bottom of the drive slide block is fixedly connected to a hydraulic cylinder, and the output end of the hydraulic cylinder is fixedly connected to a rectangular connecting frame. A motor is fixedly connected to the side of the rectangular connecting frame. A double-acting lead screw is rotatably connected to the inner side of the rectangular connecting frame. A connecting block is threaded onto the outer wall of the double-acting lead screw. A mounting plate is fixedly connected to the bottom of the connecting block. A sliding groove is formed in the middle of the mounting plate. A mounting shaft is rotatably connected to the back of the mounting plate. A movable rod A is fixedly connected to the end of the mounting shaft away from the mounting plate. Connecting rod A is hinged to both ends of the movable rod A via pins. A slider is hinged to the other end of the connecting rod A via a pin. The slider is slidably connected inside the sliding groove. A worm gear is fixedly sleeved on the outer wall of the mounting shaft. A fixing block A is fixedly connected to the back of the mounting plate. A worm sleeve is rotatably connected to the inner side of the fixing block A. The worm sleeve meshes with the worm gear. A fixing block B is fixedly connected to the inner side of the mounting plate. A moving rod slides through the middle of the fixing block B. A spiral groove is formed on the outer wall of the moving rod. A sliding shaft A is rotatably connected inside the worm sleeve. A fixing plate is fixedly connected to the bottom of the rectangular connecting frame.

2. The intelligent overhead conveyor device for easy loading and unloading of materials according to claim 1, characterized in that, One end of the moving rod slides through the worm gear sleeve and the fixed block A, and the sliding shaft A is slidably connected inside the spiral groove.

3. The intelligent overhead conveyor device for easy loading and unloading of materials according to claim 2, characterized in that, The bottom of the rectangular connecting frame is provided with a through groove, and the two sides of the connecting block are slidably connected to the inner wall of the through groove.

4. The intelligent overhead conveyor device for easy loading and unloading of materials according to claim 3, characterized in that, A fixing ring is fixedly connected to one end of the movable rod near the fixing plate, and a spring A is fixedly connected between the fixing block B and the fixing ring.

5. The intelligent overhead conveyor device for easy loading and unloading of materials according to claim 4, characterized in that, An L-shaped frame A is fixedly connected to the front of the mounting plate, and an L-shaped frame B is fixedly connected to the front of the slider. A connecting rod slides through the top of the L-shaped frames A and B. A support plate is fixedly connected to one end of the connecting rod inside the L-shaped frames A and B, and a trapezoidal plate is fixedly connected to the other end of the connecting rod. A sliding rod slides through the side of the L-shaped frame A. A side positioning block is fixedly connected to one end of the sliding rod inside the L-shaped frames A and B, and a roller is fitted to the outer end of the sliding rod.

6. The intelligent overhead conveyor device for easy loading and unloading of materials according to claim 5, characterized in that, The inclined surface of the trapezoidal plate is in contact with the roller, and the inclined surface of the trapezoidal plate slopes from the inside to the outside.

7. The intelligent overhead conveyor device for easy loading and unloading of materials according to claim 6, characterized in that, Spring B is fixedly connected to the outer walls of L-shaped frame A and L-shaped frame B, and the other end of spring B is fixedly connected to the base of roller.

8. The intelligent overhead conveyor device for easy loading and unloading of materials according to claim 1, characterized in that, An L-shaped plate is fixedly connected to the upper end of the rectangular connecting frame. A lifting protective plate slides through the upper side of the L-shaped plate. An installation groove is opened at the bottom of the lifting protective plate. A rotating rod is rotatably connected to the inner wall of the installation groove. A fall arrestor plate is fixedly sleeved on the outer wall of the rotating rod. A rotating shaft is rotatably connected to the side of the lifting protective plate. A transmission wheel A is fixedly sleeved on the outer wall of the rotating shaft. A movable rod B is fixedly connected to the outer wall of the rotating shaft. One end of the rotating rod rotatably passes through the lifting protective plate and is fixedly sleeved with the transmission wheel B. A transmission belt is wound around the outer walls of the transmission wheel A and the transmission wheel B. A trigger block is fixedly connected to the upper end of the L-shaped plate.

9. The intelligent overhead conveyor device for easy loading and unloading of materials according to claim 8, characterized in that, A torsion spring is fixedly connected between the fall arrestor plate and the inner wall of the mounting groove. An mounting block is fixedly connected to the inner side of the lifting protective plate. A telescopic rod with a built-in spring is fixedly connected to the mounting block. The bottom of the telescopic rod is fixedly connected to the L-shaped plate.

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