Alarm stop device for bucket lifting and dropping

Abstract

The application discloses a kind of alarm shutdown devices of bucket lifting skin bucket off, it is related to material conveying equipment technical field, including hoist body, the hoist body includes base shell, the upper surface of the base shell is fixedly provided with vertical support shell, the top of the vertical support shell is fixedly provided with top cover shell, drive shaft rod and driven shaft rod are respectively rotationally arranged between the front and rear inner walls of the base shell and top cover shell.The application is provided with alarm monitoring mechanism outside the hoist, adopts inductive proximity switch non-contact detection hopper running track, and the interval and on-off state of real-time determination signal are cooperated with the built-in timer of control unit, can identify abnormality in the first time of hopper off, conveying belt slip, off, when fault occurs, control unit triggers sound-light alarm and driving motor power-off simultaneously, quickly prevent equipment from continuing to operate, avoid hopper off impact shell, conveying belt tear and other accidents, greatly improve equipment operation safety.

Description

Technical Field

[0001] This invention relates to the field of material conveying equipment technology, specifically to an alarm and shutdown device for bucket elevator bucket detachment. Background Technology

[0002] Bucket elevators are widely used devices for vertically or inclinedly conveying powdery, granular, and small lump materials. Their core working component is the buckets mounted on a ring conveyor belt (or chain). During long-term operation, due to material impact, loose connecting bolts, or conveyor belt wear, buckets can easily fall off (bucket detachment) or the conveyor belt can severely slip (belt derailment).

[0003] Existing bucket elevators typically rely solely on motor overload protection or simple belt misalignment switches for safety. However, when individual buckets detach or the conveyor belt slips but doesn't jam, the motor may still be running, and the current may not have increased significantly, causing the overload protection to fail. In this situation, the detached buckets or loose conveyor belt are highly susceptible to violent friction and collision with the machine casing, potentially jamming at the head or tail of the machine. This can lead to conveyor belt tearing, casing deformation, and in severe cases, fires or equipment failure. Current detection methods largely depend on manual inspections, which are often delayed and cannot promptly stop the machine in its early stages, resulting in significant economic losses and safety hazards.

[0004] Therefore, this invention proposes an alarm and shutdown device for bucket lifting bucket detachment. Summary of the Invention

[0005] The purpose of this invention is to provide an alarm and shutdown device for bucket elevator detachment, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an alarm and shutdown device for bucket elevator detachment, comprising an elevator body, the elevator body comprising a base shell, a vertical support shell fixedly disposed on the upper surface of the base shell, a top cover fixedly disposed on the top end of the vertical support shell, a drive shaft and a driven shaft rotatably disposed between the front and rear inner walls of the base shell and the top cover, and an alarm monitoring mechanism and an automatic lubrication mechanism disposed on the front side of the base shell; The alarm monitoring mechanism includes an inverted bracket fixedly mounted on the front of the base housing by bolts. A first adjusting screw is rotatably connected to the surface of the inverted bracket. An adjusting block is threadedly connected to the surface of the first adjusting screw. A limiting shell is fixedly connected to the left end of the adjusting block. A shaft hole is opened on the front of the limiting shell. A second adjusting screw is rotatably connected to the inner wall of the shaft hole through a bearing. A push block is threadedly connected to the surface of the second adjusting screw. An inductive proximity switch is fixedly mounted at the rear end of the push block.

[0007] Preferably, pulleys are fixedly mounted on the surfaces of both the drive shaft and the driven shaft, and a conveyor belt is assembled between the two pulleys. Several hoppers are fixedly arranged on the surface of the conveyor belt. The inductive proximity switch is perpendicular to the movement direction of the conveyor belt, and the detection end of the inductive proximity switch is aligned with the movement trajectory of the hopper. A rectangular through hole is provided on the front of the base shell, and the position of the rectangular through hole corresponds to that of the inductive proximity switch.

[0008] Preferably, a rectangular limiting hole is provided on the back of the limiting shell, the size of the rectangular limiting hole is matched with the pushing block, and the pushing block is slidably connected to the inner wall of the rectangular limiting hole.

[0009] Preferably, the front of the push block is provided with a threaded groove that matches the second adjusting screw. The push block is threadedly connected to the surface of the second adjusting screw through the threaded groove. A second adjusting knob is fixedly connected to the end of the second adjusting screw. The top end of the first adjusting screw extends to the top of the C-shaped mounting bracket, and a first adjusting knob is fixedly connected to the top end of the first adjusting screw.

[0010] Preferably, the alarm monitoring mechanism further includes a control unit fixedly installed on the front of the top cover, an audible and visual alarm fixedly installed on the outside of the control unit, and a timer module installed inside the control unit. A drive motor is fixedly installed on the back of the base shell, and the drive motor, the audible and visual alarm, and the timer module are all electrically connected to the control unit.

[0011] Preferably, a limiting slider is fixedly connected to the right side of the adjusting block, and a strip-shaped guide hole is provided on the right side of the C-shaped mounting bracket. The position of the strip-shaped guide hole corresponds to the limiting slider, and the limiting slider is slidably connected to the inner wall of the strip-shaped guide hole.

[0012] Preferably, the automatic lubrication mechanism includes a protective box fixedly connected to the front of the base housing, the protective box being positioned corresponding to the drive shaft, and the output end of the drive motor extending into the interior of the base housing and fixedly connected to one end of the drive shaft.

[0013] Preferably, the end of the drive shaft away from the drive motor extends into the interior of the protective box. The drive shaft is rotatably connected to the surface of the base shell via a bearing seat. A circulating oil inlet pipe and a circulating oil outlet pipe are respectively fixedly embedded at the upper and lower ends of the bearing seat. An oil cylinder is fixedly connected to the inner wall of the protective box. A piston is slidably connected to the inner wall of the oil cylinder. A push-pull rod is fixedly connected to the left side of the piston. The end of the push-pull rod away from the piston extends to the outside of the oil cylinder and is fixedly connected to a reciprocating movable plate. The ends of the circulating oil inlet pipe and the circulating oil outlet pipe away from the bearing seat both extend into the interior of the oil cylinder. A one-way oil inlet valve and a one-way drain valve are respectively fixedly installed on the surface of the circulating oil inlet pipe and the circulating oil outlet pipe.

[0014] Preferably, the inner wall of the protective box is fixedly connected to two strip-shaped blocks, which are symmetrically distributed vertically inside the protective box. Each of the two strip-shaped blocks has a limiting slide rod fixedly connected to its left side. The surface of the limiting slide rod is slidably fitted with a guide block. The opposite surfaces of the two guide blocks are fixedly connected to the upper and lower surfaces of the reciprocating movable plate, respectively. The surface of the limiting slide rod is fitted with a return spring. One end of the return spring is fixedly connected to the surface of the guide block, and the other end of the return spring is fixedly connected to the surface of the strip-shaped block.

[0015] Preferably, a first linkage gear is fixedly connected to the surface of the drive shaft, a linkage shaft is rotatably connected to the inner wall of the protective box, a second linkage gear and a rotary cam are fixedly connected to the surface of the linkage shaft, the position of the rotary cam corresponds to the reciprocating movable plate, and the rotary cam overlaps with the left side surface of the reciprocating movable plate, and the second linkage gear meshes with the first linkage gear.

[0016] Compared with the prior art, the beneficial effects of the present invention are: (1) The alarm and shutdown device for bucket elevator detachment is equipped with an alarm monitoring mechanism on the outside of the elevator. It uses an inductive proximity switch to detect the running trajectory of the bucket in a non-contact manner. The control unit has a built-in timer to determine the signal interval and on / off status in real time. It can identify abnormalities at the first time when the bucket falls off, the conveyor belt slips, or the bucket derails. Compared with traditional current overload protection, it has higher sensitivity and more accurate judgment, and completely solves the problems of lag and failure of traditional protection devices. When a fault occurs, the control unit simultaneously triggers an audible and visual alarm and cuts off the power to the drive motor to stop the equipment from continuing to run, avoiding accidents such as the bucket falling off and hitting the casing or the conveyor belt tearing, and greatly improving the safety of equipment operation. The sensor height can be adjusted by the first adjusting screw and the sensor depth can be adjusted by the second adjusting screw. The detection position and sensing distance can be accurately located. It is compatible with different models and specifications of bucket elevators. The installation and debugging are convenient and do not require modification of the main body of the equipment.

[0017] (2) The alarm and shutdown device for bucket detachment of the bucket lift is equipped with an automatic lubrication mechanism. It uses the rotation power of the drive shaft to realize the automatic drive of the piston lubrication system. The equipment is automatically supplied with oil when it is running and stops supplying oil when it stops. No external motor or manual oiling is required. It realizes continuous, quantitative and cyclic lubrication of the bearing seat, which significantly reduces wear, extends service life and reduces maintenance costs. Attached Figure Description

[0018] Figure 1 This is a front view structural diagram of the present invention; Figure 2 This is a side view of the structure of the present invention; Figure 3This is a schematic diagram of the rear view structure of the present invention; Figure 4 This is a schematic diagram of the hoist body structure of the present invention; Figure 5 for Figure 4 Enlarged structural diagram at point A; Figure 6 for Figure 4 Enlarged structural diagram at point B; Figure 7 This is a schematic diagram of the automatic lubrication mechanism of the present invention; Figure 8 This is a schematic diagram of the internal structure of the protective box of the present invention; In the diagram: 1. Hoist body; 2. Alarm monitoring mechanism; 3. Automatic lubrication mechanism; 101. Base shell; 102. Vertical support shell; 103. Top cover; 104. Drive shaft; 105. Driven shaft; 106. Conveyor belt; 107. Hopper; 108. Rectangular through hole; 109. Drive motor; 201. C-shaped mounting bracket; 202. First adjusting screw; 203. Adjusting block; 204. Limiting shell; 205. Second adjusting screw; 206. Push block; 207. Inductive proximity switch; 208. Rectangular limiting hole; 209. Control unit; 210. Audible and visual alarm; 211. Limiting slider; 212. Strip-shaped guide hole; 213. Second adjusting knob; 214. First adjusting knob; 301. Protective housing; 302. Bearing seat; 303. Circulating oil inlet pipe; 304. Circulating oil outlet pipe; 305. Oil cylinder; 306. Piston; 307. Push-pull rod; 308. Reciprocating movable plate; 309. Limiting slide rod; 310. Guide block; 311. Return spring; 312. First linkage gear; 313. Linkage shaft; 314. Second linkage gear; 315. Rotary cam. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Please see Figures 1-8The present invention provides a technical solution: an alarm and shutdown device for bucket elevator bucket detachment, comprising an elevator body 1, the elevator body 1 comprising a base shell 101, a vertical support shell 102 fixedly disposed on the upper surface of the base shell 101, a top cover 103 fixedly disposed at the top of the vertical support shell 102, a drive shaft 104 and a driven shaft 105 rotatably disposed between the front and rear inner walls of the base shell 101 and the top cover 103, respectively, and an alarm monitoring mechanism 2 and an automatic lubrication mechanism 3 disposed on the front side of the base shell 101.

[0021] The alarm monitoring mechanism 2 includes a C-shaped mounting bracket 201 fixedly mounted on the front of the base housing 101 by bolts. A first adjusting screw 202 is rotatably connected to the surface of the C-shaped mounting bracket 201. An adjusting block 203 is threadedly connected to the surface of the first adjusting screw 202. A limiting shell 204 is fixedly connected to the left end of the adjusting block 203. A shaft hole is opened on the front of the limiting shell 204. A second adjusting screw 205 is rotatably connected to the inner wall of the shaft hole through a bearing. A push block 206 is threadedly connected to the surface of the second adjusting screw 205. An inductive proximity switch 207 is fixedly mounted at the rear end of the push block 206.

[0022] The front of the push block 206 is provided with a threaded groove that matches the second adjusting screw 205. The push block 206 is threadedly connected to the surface of the second adjusting screw 205 through the threaded groove. The end of the second adjusting screw 205 is fixedly connected to the second adjusting knob 213. The top end of the first adjusting screw 202 extends to the top of the C-shaped mounting bracket 201, and the top end of the first adjusting screw 202 is fixedly connected to the first adjusting knob 214.

[0023] The right side of the adjusting block 203 is fixedly connected to the limiting slider 211. The right side of the C-shaped mounting bracket 201 is provided with a strip guide hole 212. The position of the strip guide hole 212 corresponds to the limiting slider 211. The limiting slider 211 is slidably connected to the inner wall of the strip guide hole 212.

[0024] Both the drive shaft 104 and the driven shaft 105 are fixedly mounted with pulleys. A conveyor belt 106 is assembled between the two pulleys. Several hoppers 107 are fixedly arranged on the surface of the conveyor belt 106. An inductive proximity switch 207 is perpendicular to the movement direction of the conveyor belt 106. The detection end of the inductive proximity switch 207 is aligned with the movement trajectory of the hoppers 107. A rectangular through hole 108 is opened on the front of the base shell 101. The position of the rectangular through hole 108 corresponds to that of the inductive proximity switch 207. A rectangular limiting hole 208 is opened on the back of the limiting shell 204. The size of the rectangular limiting hole 208 matches that of the push block 206. The push block 206 is slidably connected to the inner wall of the rectangular limiting hole 208.

[0025] The alarm monitoring mechanism 2 also includes a control unit 209 fixedly installed on the front of the top cover 103. An audible and visual alarm 210 is fixedly installed on the outside of the control unit 209, and a timer module is installed inside the control unit 209. A drive motor 109 is fixedly installed on the back of the base cover 101. The drive motor 109, the audible and visual alarm 210 and the timer module are all electrically connected to the control unit 209 to form a complete detection-judgment execution-control link.

[0026] It is worth noting that the adjustable design allows for precise height positioning of the inductive proximity switch 207 via the first adjusting screw 202, while the second adjusting screw 205 enables fine-tuning of the detection distance. This design is compatible with bucket elevators of different models and sizes of hoppers 107, making installation and debugging simple and quick. The non-contact inductive detection method eliminates mechanical wear, has strong resistance to dust interference, and boasts a long service life. Combined with a timer module that monitors signal intervals in real time, it can identify anomalies at the first sign of hopper 107 detachment, belt slippage, or derailment, with sensitivity far exceeding that of traditional current overload protection, thus solving the problems of lag and failure in traditional protection devices. After a fault occurs, the control unit 209 simultaneously triggers an audible and visual alarm and shuts down the motor, quickly preventing the fault from escalating and avoiding safety accidents such as hopper 107 impacting the machine casing or conveyor belt tearing, significantly improving operational safety.

[0027] The automatic lubrication mechanism 3 includes a protective box 301 fixedly connected to the front of the base housing 101. The protective box 301 is positioned corresponding to the drive shaft 104. The output end of the drive motor 109 extends into the interior of the base housing 101 and is fixedly connected to one end of the drive shaft 104.

[0028] The end of the drive shaft 104 away from the drive motor 109 extends into the interior of the protective box 301. The drive shaft 104 is rotatably connected to the surface of the base shell 101 via the bearing seat 302. The upper and lower ends of the bearing seat 302 are respectively fixedly embedded with a circulating oil inlet pipe 303 and a circulating oil outlet pipe 304. An oil cylinder 305 is fixedly connected to the inner wall of the protective box 301. A piston 306 is slidably connected to the inner wall of the oil cylinder 305. A push-pull rod 307 is fixedly connected to the left side of the piston 306. The end of the push-pull rod 307 away from the piston 306 extends to the outside of the oil cylinder 305 and is fixedly connected to a reciprocating movable plate 308. The ends of the circulating oil inlet pipe 303 and the circulating oil outlet pipe 304 away from the bearing seat 302 both extend into the interior of the oil cylinder 305. A one-way oil inlet valve and a one-way drain valve are respectively fixedly installed on the surface of the circulating oil inlet pipe 303 and the circulating oil outlet pipe 304.

[0029] Two strip-shaped blocks are fixedly connected to the inner wall of the protective box 301. The two strip-shaped blocks are symmetrically distributed inside the protective box 301. Limiting slide rods 309 are fixedly connected to the left side of each of the two strip-shaped blocks. Guide blocks 310 are slidably sleeved on the surface of the limiting slide rods 309. The opposite surfaces of the two guide blocks 310 are fixedly connected to the upper and lower surfaces of the reciprocating movable plate 308, respectively. A return spring 311 is sleeved on the surface of the limiting slide rods 309. One end of the return spring 311 is fixedly connected to the surface of the guide block 310, and the other end of the return spring 311 is fixedly connected to the surface of the strip-shaped block.

[0030] A first linkage gear 312 is fixedly connected to the surface of the drive shaft 104. A linkage shaft 313 is rotatably connected to the inner wall of the protective box 301. A second linkage gear 314 and a rotary cam 315 are fixedly connected to the surface of the linkage shaft 313. The position of the rotary cam 315 corresponds to the reciprocating movable plate 308, and the rotary cam 315 overlaps with the left side surface of the reciprocating movable plate 308. The second linkage gear 314 meshes with the first linkage gear 312. The gear ratio of the second linkage gear 314 to the first linkage gear 312 is 100:1, which realizes a large reduction ratio drive, so that the rotary cam 315 rotates smoothly at low speed, thereby enabling the oil cylinder 305 to achieve uniform, smooth, and quantitative oil supply, avoiding oil overflow, waste, pollution, and bearing overheating problems caused by high-speed oil supply.

[0031] It is worth noting that the drive shaft 104 uses its own rotation as a power source, eliminating the need for an additional motor or electrical control. This achieves pure mechanical linkage lubrication, resulting in energy savings, high reliability, and reduced consumption. The equipment automatically supplies oil during operation and stops supplying oil when it stops, perfectly synchronizing with the equipment's operating status and avoiding dry friction and excessive lubrication. The circulating lubrication design allows for oil reuse, reducing operating costs. It also reduces the frequency of manual oiling and maintenance, improving the overall operating efficiency of the equipment. The overall external installation does not alter the internal structure of the hoist, making maintenance convenient and suitable for harsh working conditions with high dust and heavy loads, such as in mining, building materials, and grain processing.

[0032] Working principle: After the device is started, the drive motor 109 drives the drive shaft 104 to rotate at a constant speed. The drive shaft 104 drives the conveyor belt 106 and the hopper 107 to run in a cycle through the pulley, thereby lifting the material. At this time, the alarm monitoring mechanism 2 and the automatic lubrication mechanism 3 enter the working state simultaneously.

[0033] In terms of alarm monitoring, the inductive proximity switch 207 continuously monitors the running trajectory of the hopper 107. During normal operation, the hopper 107 passes through the detection end at a uniform speed in sequence. The inductive proximity switch 207 outputs a stable periodic pulse signal. The control unit 209 receives the signal and records the time interval Δt between adjacent pulses through the timer module. Δt remains within the normal threshold range, and the equipment operates continuously and stably. When abnormalities such as the hopper 107 falling off, the conveyor belt 106 slipping, or derailing occur, the pulse signal interval Δt increases significantly or the signal is directly interrupted. The control unit 209 immediately determines the fault and simultaneously executes two actions: first, it drives the audible and visual alarm 210 to issue an audible and visual alarm, reminding on-site personnel to handle the situation quickly; second, it cuts off the power supply circuit of the drive motor 109, causing the equipment to stop immediately, preventing the fault from escalating further, and preventing major accidents such as conveyor belt tearing, casing deformation, jamming, or even fire.

[0034] In terms of automatic lubrication, the rotation of the drive shaft 104 drives the first linkage gear 312 to rotate synchronously. The first linkage gear 312 meshes with and drives the second linkage gear 314, which in turn drives the linkage shaft 313 and the rotary cam 315 to rotate at low speed through a 100:1 reduction ratio. When the rotary cam 315 rotates, it periodically pushes the reciprocating movable plate 308 to move to the right. The reciprocating movable plate 308 pushes the piston 306 to slide inside the oil cylinder 305 through the push-pull rod 307, compressing the oil and generating pressure. At this time, the one-way oil inlet valve is closed and the one-way drain valve is opened. The oil is then forced into the bearing housing 302 through the circulating oil outlet pipe 304 to fully lubricate the bearing raceway and rolling elements. When the rotary cam 315 passes its highest point, the return spring 311 pushes the guide block 310 and the reciprocating movable plate 308 to return to the left, and the piston 306 returns to its original position simultaneously. A negative pressure is formed inside the oil cylinder 305, the one-way drain valve closes and the one-way inlet valve opens, and the oil flows back to the oil cylinder 305 through the circulating inlet pipe 303, completing one oil suction-pressure cycle. The drive shaft 104 continues to rotate, and the above cycle is repeated continuously, realizing continuous, stable, and quantitative automatic circulating lubrication of the bearing housing 302.

Claims

1. An alarm and shutdown device for bucket elevator bucket detachment, comprising an elevator body (1), characterized in that: The hoist body (1) includes a base shell (101), a vertical support shell (102) is fixedly provided on the upper surface of the base shell (101), a top cover (103) is fixedly provided at the top of the vertical support shell (102), a drive shaft (104) and a driven shaft (105) are respectively rotatably provided between the front and rear inner walls of the base shell (101) and the top cover (103), and an alarm monitoring mechanism (2) and an automatic lubrication mechanism (3) are provided on the front of the base shell (101). The alarm monitoring mechanism (2) includes a C-shaped mounting bracket (201) fixedly mounted on the front of the base shell (101) by bolts. A first adjusting screw (202) is rotatably connected to the surface of the C-shaped mounting bracket (201). An adjusting block (203) is threadedly connected to the surface of the first adjusting screw (202). A limiting shell (204) is fixedly connected to the left end of the adjusting block (203). A shaft hole is opened on the front of the limiting shell (204). A second adjusting screw (205) is rotatably connected to the inner wall of the shaft hole through a bearing. A push block (206) is threadedly connected to the surface of the second adjusting screw (205). An inductive proximity switch (207) is fixedly mounted at the rear end of the push block (206).

2. The alarm and shutdown device for bucket elevator detachment according to claim 1, characterized in that: Both the drive shaft (104) and the driven shaft (105) are fixedly mounted with pulleys, and a conveyor belt (106) is assembled between the two pulleys. Several hoppers (107) are fixedly arranged on the surface of the conveyor belt (106). The inductive proximity switch (207) is perpendicular to the movement direction of the conveyor belt (106). The detection end of the inductive proximity switch (207) is aligned with the movement trajectory of the hopper (107). A rectangular through hole (108) is opened on the front of the base shell (101). The position of the rectangular through hole (108) corresponds to that of the inductive proximity switch (207).

3. The alarm and shutdown device for bucket elevator detachment according to claim 2, characterized in that: The back of the limiting shell (204) is provided with a rectangular limiting hole (208), the size of which matches the size of the push block (206), and the push block (206) is slidably connected to the inner wall of the rectangular limiting hole (208).

4. The alarm and shutdown device for bucket elevator detachment according to claim 3, characterized in that: The front of the push block (206) is provided with a threaded groove that matches the second adjusting screw (205). The push block (206) is threadedly connected to the surface of the second adjusting screw (205) through the threaded groove. The end of the second adjusting screw (205) is fixedly connected to a second adjusting knob (213). The top end of the first adjusting screw (202) extends to the top of the C-shaped mounting bracket (201), and the top end of the first adjusting screw (202) is fixedly connected to a first adjusting knob (214).

5. The alarm and shutdown device for bucket elevator detachment according to claim 4, characterized in that: The alarm monitoring mechanism (2) also includes a control unit (209) fixedly installed on the front of the top cover (103). An audible and visual alarm (210) is fixedly installed on the outside of the control unit (209), and a timer module is provided inside the control unit (209). A drive motor (109) is fixedly installed on the back of the base shell (101). The drive motor (109), the audible and visual alarm (210), and the timer module are all electrically connected to the control unit (209).

6. The alarm and shutdown device for bucket elevator detachment according to claim 5, characterized in that: The right side of the adjusting block (203) is fixedly connected to a limiting slider (211), and the right side of the C-shaped mounting bracket (201) is provided with a strip guide hole (212). The position of the strip guide hole (212) corresponds to the limiting slider (211), and the limiting slider (211) is slidably connected to the inner wall of the strip guide hole (212).

7. The alarm and shutdown device for bucket elevator detachment according to claim 6, characterized in that: The automatic lubrication mechanism (3) includes a protective box (301) fixedly connected to the front of the base shell (101). The position of the protective box (301) corresponds to the drive shaft (104). The output end of the drive motor (109) extends into the interior of the base shell (101) and is fixedly connected to one end of the drive shaft (104).

8. The alarm and shutdown device for bucket elevator detachment according to claim 7, characterized in that: The end of the drive shaft (104) away from the drive motor (109) extends into the interior of the protective box (301). The drive shaft (104) is rotatably connected to the surface of the base shell (101) via a bearing seat (302). A circulating oil inlet pipe (303) and a circulating oil outlet pipe (304) are fixedly embedded at the upper and lower ends of the bearing seat (302), respectively. An oil cylinder (305) is fixedly connected to the inner wall of the protective box (301), and a piston (306) is slidably connected to the inner wall of the oil cylinder (305). A push-pull rod (307) is fixedly connected to the left side of the piston (306). The end of the push-pull rod (307) away from the piston (306) extends to the outside of the oil cylinder (305) and is fixedly connected to a reciprocating movable plate (308). The ends of the circulating oil inlet pipe (303) and the circulating oil outlet pipe (304) away from the bearing seat (302) both extend to the inside of the oil cylinder (305). A one-way oil inlet valve and a one-way drain valve are fixedly provided on the surfaces of the circulating oil inlet pipe (303) and the circulating oil outlet pipe (304), respectively.

9. The alarm and shutdown device for bucket elevator detachment according to claim 8, characterized in that: Two strip-shaped blocks are fixedly connected to the inner wall of the protective box (301). The two strip-shaped blocks are symmetrically distributed inside the protective box (301). A limiting slide rod (309) is fixedly connected to the left side of each of the two strip-shaped blocks. A guide block (310) is slidably sleeved on the surface of the limiting slide rod (309). The opposite surfaces of the two guide blocks (310) are fixedly connected to the upper and lower surfaces of the reciprocating movable plate (308). A return spring (311) is sleeved on the surface of the limiting slide rod (309). One end of the return spring (311) is fixedly connected to the surface of the guide block (310), and the other end of the return spring (311) is fixedly connected to the surface of the strip-shaped block.

10. The alarm and shutdown device for bucket elevator detachment according to claim 9, characterized in that: The drive shaft (104) is fixedly connected to a first linkage gear (312), and the inner wall of the protective box (301) is rotatably connected to a linkage shaft (313). The linkage shaft (313) is fixedly connected to a second linkage gear (314) and a rotary cam (315). The position of the rotary cam (315) corresponds to the reciprocating movable plate (308), and the rotary cam (315) overlaps with the left side surface of the reciprocating movable plate (308). The second linkage gear (314) meshes with the first linkage gear (312).

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