Bucket elevator

Abstract

The utility model discloses a bucket elevator, which belongs to the technical field of material conveying equipment and is mainly used for transporting materials up and down. The bucket elevator comprises a lower machine base provided with a feeding port and a driven wheel and an upper machine base provided with a discharging port and a driving wheel, a conveying chain is arranged between the driving wheel and the driven wheel, a hopper is arranged on the conveying chain, a fixing shaft penetrating through the lower machine base is arranged in the center of the driven wheel, and the lower machine base is provided with a feeding port and a discharging port. Fixed shaft seats slidably connected with the lower base are arranged at two ends of the fixed shaft, a control mechanism used for controlling the fixed shaft seats to slide is arranged at the top of the lower base, and the control mechanism is further electrically connected with a pressure sensor located between the fixed shaft and the driven wheel; according to the bucket elevator, the fixed shaft seat capable of sliding up and down along the lower machine seat, the control mechanism and the pressure sensor are arranged, so that the position of the driven wheel can be automatically adjusted according to the use state of the chain, the tension between the chain and the driving wheel and the tension between the chain and the driven wheel are always kept, and normal use of the bucket elevator is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of material conveying equipment, in particular to a bucket elevator. Background Art

[0002] A bucket elevator is a conveying equipment used for vertically lifting materials. Its working principle is: through power, the driving wheel installed above the elevator rotates, and the chain between the driving wheel above and the driven wheel below moves up and down. The lifting bucket installed on the chain digs materials from the feeding bin at the lower part of the elevator and moves to the discharging bin at the upper part to pour out, completing the lifting process. However, due to the fact that the own weight at the driven wheel below the existing bucket elevator cannot meet the shaking or jumping of the chain during the material transportation process, which causes the chain to disengage from the driven wheel and the driving wheel, resulting in the chain scraping the outer shell of the bucket elevator. To avoid the above situation, a tensioning device is often set below the bucket elevator to ensure that the chain has sufficient tension during transportation. For example, in the bucket elevator structure described in CN112224754A "Bucket Elevator", a tensioning device is installed on the driven wheel, and the tensioning device is a screw-type tensioning device. By adjusting the screw, it is ensured that the conveyor belt has sufficient tension. However, after the bucket elevator runs for a long time, the conveyor belt or the chain connected to the driven wheel will expand and contract due to heat during operation or the conveyor belt or the chain becomes longer after long-term operation. And when the operator fails to adjust the screw in time, it causes the conveyor belt or the chain to swing left and right or even derail, and finally it needs to be shut down for maintenance. Therefore, using a tensioning device such as a screw-type tensioning device requires manual monitoring of the working state of the chain and the conveyor belt, and adjusting the tensioning device so that the sprocket or the conveyor belt and the driving wheel and the driven wheel always have sufficient tension to ensure its normal operation and not swing left and right or derail. It cannot automatically adjust the tensioning device according to the tension between the chain or the conveyor belt and the driven wheel and the driving wheel to tension the chain or the conveyor belt between the driven wheel and the driving wheel to ensure the normal operation of the bucket elevator. Content of the Utility Model

[0003] The technical problem to be solved by the utility model is to provide a bucket elevator, which is mainly used for material transportation, so as to achieve the purpose of automatically adjusting the position of the driven wheel according to the use state of the chain, always maintaining the tension between the chain and the driving wheel and the driven wheel, and ensuring the normal use of the bucket elevator.

[0004] The bucket elevator disclosed by the utility model comprises a lower machine base and an upper machine base. Above the lower machine base, there is a machine body. On both sides of the lower machine base, there are respectively feeding ports. Inside the lower machine base, there is a driven wheel. Inside the upper machine base, there is a driving wheel. The driving wheel is drivingly connected to a motor. On one side of the upper machine base, there is a discharging port. A transmission chain connected to the driven wheel is sleeved on the driving wheel. The transmission chain is arranged inside the machine body. Buckets are evenly distributed on the transmission chain. The center of the driven wheel is provided with a fixed shaft penetrating through the lower machine base. A through groove for the up-and-down sliding of the fixed shaft is formed in the lower machine base. Fixed shaft seats are arranged at both ends of the fixed shaft. Each fixed shaft seat is slidably connected to the lower machine base. At the top of the lower machine base, there is a control mechanism for controlling the sliding of the fixed shaft seat. The output end of the control mechanism is fixedly connected to the top of the fixed shaft seat. The control mechanism is also electrically connected to a pressure sensor. The pressure sensor is arranged between the fixed shaft and the driven wheel.

[0005] Further, the control mechanism comprises a telescopic mechanism and a PLC controller. The telescopic mechanism is arranged at the top of the lower machine base. The output end of the telescopic mechanism is connected to the top of the fixed shaft seat. The telescopic mechanism, the pressure sensor and the PLC controller are electrically connected.

[0006] Further, the control mechanism comprises a cylinder. The cylinder barrel of the cylinder is arranged at the top of the lower machine base. The piston rod of the cylinder is fixedly connected to the fixed shaft seat.

[0007] Further, slide rails are arranged on the lower machine base on both sides of the through groove. The length of the slide rails is greater than the length of the through groove. Sliders adapted to the slide rails are arranged on both sides of the fixed shaft seat.

[0008] As a preferred mode, a cover plate is arranged between two adjacent slide rails. The cover plate is detachably arranged on the slide rails.

[0009] As a preferred mode, the cover plate is a transparent cover plate.

[0010] Further, the machine body comprises two cuboid-shaped shells. Each shell respectively covers the outside of the transmission chain on both sides of the driven wheel. A maintenance window is arranged on the shell.

[0011] As a preferred mode, a cross bar is arranged between the two shells. A plurality of cross bars are evenly arranged along the length direction of the shell.

[0012] As a preferred mode, a diagonal brace is arranged between two adjacent cross bars. A plurality of diagonal braces are evenly arranged along the length direction of the cross bar. A triangle is formed by enclosing between two adjacent diagonal braces and the cross bar.

[0013] The beneficial effects of the present utility model are as follows: By providing a fixed shaft seat that can slide up and down along the lower machine base, a control mechanism for controlling the up and down sliding of the fixed shaft seat, and a pressure sensor, it is possible to monitor in real time the pressure value between the conveyor chain and the driven wheel, so as to reflect the connection relationship between the conveyor chain and the driven wheel. According to the pressure value, the up and down sliding of the fixed shaft seat is controlled in a timely manner to adjust the position of the driven wheel, so that there is sufficient tension between the driving wheel, the driven wheel and the conveyor chain, and the conveyor chain always remains taut, ensuring the normal operation of the bucket elevator. Brief Description of the Drawings

[0014] Figure 1 : Schematic structural diagram of the bucket elevator provided by the present utility model;

[0015] Figure 2 : Schematic internal structural diagram of the bucket elevator;

[0016] Figure 3 : Schematic structural diagram of using a telescopic mechanism as the control mechanism;

[0017] Figure 4 : Schematic structural diagram of using a cylinder as the control mechanism;

[0018] Reference Signs in the Drawings: 1 - Lower Machine Base; 11 - Feed Inlet; 12 - Driven Wheel; 13 - Fixed Shaft; 131 - Fixed Shaft Seat; 132 - Slide Block; 14 - Mounting Plate; 141 - Slide Rail; 15 - Through Slot; 2 - Upper Machine Base; 21 - Discharge Outlet; 22 - Driving Wheel; 221 - Central Rotating Shaft; 23 - Motor; 24 - Motor Base; 3 - Machine Body; 31 - Conveyor Chain; 32 - Hopper; 33 - Housing; 34 - Maintenance Window; 35 - Cross Bar; 36 - Diagonal Brace; 4 - Control Mechanism; 41 - Telescopic Mechanism; 42 - Cylinder; 421 - Cylinder Barrel; 422 - Piston Rod; 5 - Pressure Sensor. Detailed Embodiment

[0019] The present utility model will be further described below.

[0020] The utility model provides a bucket elevator, which is mainly used for the up and down transportation of materials. It includes a lower base 1 and an upper base 2. Above the lower base 1, there is a machine body 3. On both sides of the lower base 1, there are respectively feeding ports 11. Inside the lower base 1, there is a driven wheel 12. Inside the upper base 2, there is a driving wheel 22. The driving wheel 22 is connected to a motor 23 by transmission. On one side of the upper base 2, there is a discharging port 21. A transmission chain 31 connected to the driven wheel 12 is sleeved on the driving wheel 22. The transmission chain 31 is arranged inside the machine body 3. On the transmission chain 31, there are evenly distributed hoppers 32. Its characteristics are as follows: At the center of the driven wheel 12, there is a fixed shaft 13 passing through the lower base 1. On the lower base 1, there is a through groove 15 for the up and down sliding of the fixed shaft 13. At both ends of the fixed shaft 13, there are fixed shaft seats 131. Each fixed shaft seat 131 is slidably connected to the lower base 1. At the top of the lower base 1, there is a control mechanism 4 for controlling the sliding of the fixed shaft seat 131.

[0021] As Figure 1 , Figure 2 shown, this bucket elevator includes a lower base 1 and an upper base 2. Inside the lower base 1, there is a driven wheel 12. Inside the upper base 2, there is a driving wheel 22. Outside the upper base 2, there is a motor base 24. The motor 23 is arranged on the motor base 24 and the output end of the motor 23 is in transmission connection with the central rotating shaft 221 of the driving wheel 22. A transmission chain 31 is sleeved between the driving wheel 22 and the driven wheel 12. On the transmission chain 31, there are evenly distributed hoppers 32 for containing materials. The motor 23 drives the driving wheel 22 to rotate, so as to drive the transmission chain 31 to rotate clockwise, in order to achieve the purpose of transporting materials from bottom to top; For protection and to avoid the overflow of materials caused by the shaking of the transmission chain 31 during the transmission process, a machine body 3 is covered outside the transmission strip, so that the materials spilled during the transportation process will fall back into the feeding port 11 arranged on the lower base 1 along the machine body 3, avoiding material waste and not polluting the external environment; For the convenience of maintenance, an inspection window 34 is usually opened on the side of the machine body 3, and a feeding port 11 is arranged on the side of the lower base 1. It should be noted that if there is only one feeding port 11, it needs to be arranged on the side where the transmission chain 31 moves upward; On one side of the upper base 2, there is a discharging port 21. It should be noted that the discharging port 21 is arranged on the side where the transmission strip moves downward; In order to avoid the deformation of the transmission chain 31 after long-term operation, that is, the transmission chain 31 becomes longer or shorter, resulting in the transmission chain 31 swaying left and right between the driving wheel 22 and the driven wheel 12 or even disengaging from the driven wheel 12, causing the bucket elevator to fail to work properly, such as Figure 1 , Figure 3 , Figure 4As shown in the figure, a fixed shaft 13 passing through the lower base 1 is provided at the center of the driven wheel 12, and the driven wheel 12 is rotatably arranged on the fixed shaft 13. Fixed shaft seats 131 are provided at both ends of the fixed shaft 13 extending out of the lower base 1. The up and down movement of the fixed shaft 13 is realized through the sliding connection between the fixed shaft seats 131 and the lower base 1, thereby driving the driven wheel 12 rotatably arranged on the fixed shaft 13 to move up and down, so that the conveyor chain 31 is always tightened between the driving wheel 22 and the driven wheel 12. To facilitate the up and down movement of the fixed shaft 13 for the fixed shaft seats 131, a through groove 15 for the up and down sliding of the fixed shaft 13 is provided on the lower base 1; to facilitate controlling the up and down sliding distance of the lower base 1 to make it consistent with the actual required adjustment distance and avoid excessive adjustment, a pressure sensor 5 for real-time monitoring of the pressure value between the driven wheel 12 and the fixed shaft 13 is provided between the fixed shaft 13 and the driven wheel 12, and the pressure sensor 5 is feedback to a control mechanism 4 electrically connected to it, so that the control mechanism 4 can slide the fixed shaft seat 131 according to actual needs; a control mechanism 4 for controlling the sliding of the fixed shaft seat 131 is provided at the top of the lower base 1. The output end of the control mechanism 4 is fixedly connected to the top of the fixed shaft seat 131 to achieve the purpose of driving the fixed shaft seat 131 to slide, and after reaching the specified position, the fixed shaft seat 131 is controlled to stop moving and maintain a locked state. By setting the pressure sensor 5 located between the fixed shaft 13 and the driven wheel 12 to monitor the pressure value in real time, and measuring the pressure value generated on the driven wheel 12 and the fixed shaft 13 when the conveyor chain 31 is running normally, the pressure value is feedback to the control mechanism 4 in real time during the operation process. The control mechanism 4 determines the connection relationship between the conveyor chain 31 and the driven wheel 12 at this time. If the pressure value increases, the conveyor chain 31 becomes shorter. At this time, it is necessary to drive the fixed shaft seat 131 to move upward through the control mechanism 4 until the pressure value returns to the normal value; if the pressure value decreases, the conveyor chain 31 becomes longer. At this time, it is necessary to drive the fixed shaft seat 131 to move downward through the control mechanism 4 until the pressure value returns to the normal value, so that there is sufficient tension between the driving wheel 22, the driven wheel 12 and the conveyor chain 31, and the conveyor chain 31 always remains tight, ensuring the normal operation of the bucket elevator. By setting the fixed shaft seat 131 that can slide up and down along the lower base 1, the control mechanism 4 for controlling the up and down sliding of the fixed shaft seat 131, and the pressure sensor 5, the pressure value between the conveyor chain 31 and the driven wheel 12 is monitored in real time to reflect the connection relationship between the conveyor chain 31 and the driven wheel 12, and the fixed shaft seat 131 is controlled to slide up and down in time according to the pressure value to adjust the position of the driven wheel 12, so that there is sufficient tension between the driving wheel 22, the driven wheel 12 and the conveyor chain 31, and the conveyor chain 31 always remains tight, ensuring the normal operation of the bucket elevator and avoiding the phenomenon that the conveyor chain 31 sways left and right or disengages from the driving wheel 22 and the driven wheel 12 after long-term use.

[0022] Specifically, the control mechanism 4 includes a telescopic mechanism 41 and a PLC controller. The telescopic mechanism 41 is arranged at the top of the lower machine base 1. The output end of the telescopic mechanism 41 is connected to the top of the fixed shaft seat 131. The telescopic mechanism 41, the pressure sensor 5 and the PLC controller are electrically connected. This control mechanism 4 includes a telescopic mechanism 41 and a PLC controller. The telescopic mechanism 41 is arranged at the top of the lower machine base 1. The output end of the telescopic mechanism 41 is connected to the top of the fixed shaft seat 131. The pressure sensor 5 is arranged below the fixed shaft 13. The telescopic mechanism 41, the pressure sensor 5 and the PLC controller are electrically connected. Specifically, the telescopic mechanism 41 and the pressure sensor 5 are respectively electrically connected to the PLC controller. The PLC controller controls the up and down telescoping of the telescopic mechanism 41, thereby driving the fixed shaft seat 131 connected to the output end of the telescopic mechanism 41 to move up and down along the slide rail 141. At the same time, the pressure sensor 5 is arranged below the fixed shaft 13 to detect the pressure exerted by the driven wheel 12 on the lower part of the fixed shaft 13 and feedback it to the PLC controller. Then, the PLC controller sends a signal to control the up and down telescoping of the telescopic mechanism 41. The pressure value when the driven wheel 12 is working normally on the lower part of the fixed shaft 13 is set as the threshold value. When the transmission chain 31 becomes longer, the pressure value of the driven wheel 12 on the lower part of the fixed shaft 13 decreases. At this time, the pressure sensor 5 feeds back the parameters to the PLC controller, and then the PLC controller controls the telescopic mechanism 41 to telescopically move downward to drive the fixed shaft 13 and the driven wheel 12 rotatably arranged on the fixed shaft 13 to move downward, thereby achieving the purpose of tightening the transmission chain 31. When the transmission chain 31 becomes shorter, the pressure value of the driven wheel 12 on the lower part of the fixed shaft 13 increases. At this time, the pressure sensor 5 feeds back the parameters to the PLC controller, and then the PLC controller controls the telescopic mechanism 41 to telescopically move upward to drive the fixed shaft 13 and the driven wheel 12 rotatably arranged on the fixed shaft 13 to move upward, thereby achieving the purpose of tightening the transmission chain 31. The above telescopic mechanism 41 can adopt existing telescopic rods, electric push rods or hydraulic cylinders, as long as it can achieve the purpose of driving the fixed shaft seat 131 to move up and down. The sliding connection between the above fixed shaft seat 131 and the lower machine base 1 can adopt existing pulley slide rails or the connection method of meshing gears and racks.

[0023] Since the transmission chain 31 will vibrate when transporting materials, resulting in the monitored value of the pressure sensor 5 always changing, it is impossible to accurately judge whether the pressure change of the driven wheel 12 on the fixed shaft 13 is caused by the change in the length of the transmission chain 31. To ensure the accuracy of the pressure value monitored by the pressure sensor 5, as Figure 3As shown, the control mechanism 4 includes a cylinder 42. The cylinder barrel 421 of the cylinder 42 is arranged at the top of the lower machine base 1, and the piston rod 422 of the cylinder 42 is fixedly connected to the fixed shaft seat 131. By using the cylinder 42 as the telescopic mechanism and compressed air as the power source for the telescopic movement of the piston rod 422 of the cylinder 42, the cylinder 42 has a telescopic distance. By setting a constant pressure, that is, using a constant-pressure cylinder 42, it is beneficial to use the compressed air pressure as the counterweight source, beneficial to use the cylinder 42 as the telescopic mechanism 41, and beneficial to use the pressure valve as the constant-pressure control element. During operation, the user can set the pressure according to the counterweight weight, so that the downward force of the counterweight always remains stable under the action of the same counterweight force; for example: when the cylinder 42 is set with a thrust of 4 Mpa, the piston rod 422 of the cylinder 42 has a force of 4 Mpa, pushing the fixed shaft seat 131 downward and keeping it fixed, and then driving the fixed shaft 13 and the driven wheel 12 rotatably arranged on the fixed shaft 13 to be fixed; when the conveyor chain 31 becomes longer, the thrust of the cylinder 42 becomes smaller, then the cylinder barrel 421 will intake air, driving the piston rod 422 to telescopic downward, and then prompting the piston rod 422 to push the fixed shaft seat 131 downward, driving the fixed shaft 13 and the driven wheel 12 rotatably arranged on the fixed shaft 13 to move downward until the thrust in the cylinder 42 reaches 4 Mpa, and the driven wheel 12 moves downward to the position where the conveyor chain 31 is tightened; when the conveyor chain 31 becomes shorter, the thrust of the cylinder 42 becomes larger, then the cylinder barrel 421 will exhaust air, driving the piston rod 422 to telescopic upward, and then prompting the piston rod 422 to drive the fixed shaft seat 131 upward, causing the fixed shaft 13 and the driven wheel 12 rotatably arranged on the fixed shaft 13 to move upward until the thrust in the cylinder 42 reaches 4 Mpa, and the driven wheel 12 moves upward to the position where the conveyor chain 31 is tightened; the whole process does not require the installation of a pressure sensor 5 and a PLC controller, reducing the equipment installation steps and the equipment manufacturing cost, and at the same time being able to ensure the accuracy of monitoring, achieving real-time monitoring of the use state of the conveyor chain 31, automatically adjusting the position of the driven wheel 12, and always maintaining the tension between the chain and the driving wheel 22 and the driven wheel 12, ensuring the normal operation of the bucket elevator.

[0024] For the convenience of installation and without affecting the normal operation of the bucket elevator, as Figure 1 、 Figure 3As shown in the figure, slide rails 141 are provided on the lower machine base 1 on both sides of the through groove 15. The length of the slide rails 141 is greater than the length of the through groove 15. Both sides of the fixed shaft seat 131 are provided with sliders 132 adapted to the slide rails 141. Specifically, mounting plates 14 perpendicular to the lower machine base 1 are arranged on both sides of the through groove 15, and the slide rails 141 are arranged on the mounting plates 14. Such an arrangement will not affect the structure of the lower machine base 1 and ensure its normal operation. At the same time, arranging the slide rails 141 on the outer side of the lower machine base 1 facilitates the real-time inspection of the connection and cooperation between the slide rails 141 and the sliders 132, ensuring that the fixed shaft seat 131 can slide along the slide rails 141. Sliders 132 adapted to the slide rails 141 are arranged on both sides of the fixed shaft seat 131. The sliders 132 are slidably engaged with the slide rails 141 to drive the fixed shaft seat 131 to slide up and down along the slide rails 141, thereby driving the fixed shaft 13 fixedly connected to the fixed shaft seat 131 to move up and down along the through groove 15, driving the driven wheel 12 rotatably connected to the fixed shaft 13 to move up and down, and then tightening the lengthened or shortened conveyor chain 31 to ensure its normal operation without swaying left and right or derailing.

[0025] To avoid the influence of the external environment on the sliding of the fixed shaft seat 131 and prevent external impurities from entering the lower machine base 1 through the through groove 15 and affecting the normal rotation of the driven wheel 12, a cover plate is provided between two adjacent slide rails 141. The cover plate is detachably arranged on the slide rails 141. By adding a cover plate between the two slide rails 141, the influence of the external environment on the fixed shaft seat 131 and the driven wheel 12 is isolated to ensure the normal use of the bucket elevator. Further, to facilitate observing the working state of the fixed shaft seat 131 and the movement control of the fixed shaft seat 131 by the control mechanism 4, the cover plate is a transparent cover plate. Specifically, a transparent acrylic plate can be used for setting to facilitate the real-time observation of the sliding control of the fixed shaft seat 131 by the control mechanism 4.

[0026] To facilitate the maintenance of the conveyor chain 31 and the hopper 32, as Figure 1 shown, the fuselage 3 includes two cuboid-shaped shells 33. Each shell 33 covers the outside of the conveyor chain 31 on both sides of the driven wheel 12. A maintenance window 34 is provided on the shell 33. By adjusting the integral fuselage 3 that simultaneously covers the outside of the conveyor chain 31 to two shells 33 that respectively cover the conveyor chain 31 on both sides of the driven wheel 12, the conveyor chain 31 on the side for feeding and the conveyor chain 31 on the side for discharging are separated, reducing the mutual influence between the two, and enabling the material transportation on both sides to not interfere with each other. Maintenance windows 34 are provided on both of the two shells 33, which can not only facilitate the operator to observe the operating state of the conveyor chain 31 and the hopper 32, but also enable the immediate adjustment or maintenance of the conveyor chain 31.

[0027] To avoid the instability caused by the excessive height of the fuselage 3, as Figure 1As shown, a cross bar 35 is provided between the two shells 33, and multiple cross bars 35 are evenly arranged along the length direction of the shell 33; by adding multiple cross bars 35 between the two shells 33, the lateral rigidity and lateral stability of the entire bucket elevator are enhanced. In order to further improve the adaptability and stability of the structure, some cross bars 35 may also be designed as structures that can slide and adjust along the length direction of the shell 33, that is, the cross bar 35 is slidably connected between the shells 33 to adapt to different requirements for the height and stability of the fuselage 3 when transporting materials of different weights; to further ensure the stability between adjacent cross bars 35, as Figure 1 shown, a diagonal brace 36 is provided between adjacent cross bars 35, and multiple diagonal braces 36 are evenly arranged along the length direction of the cross bar 35. A triangle is formed by enclosing between adjacent diagonal braces 36 and the cross bar 35; by adding a diagonal brace 36 between adjacent cross bars 35 as an auxiliary support structure, the triangular structure formed between the diagonal brace 36 and the cross bar 35 further enhances the stability of the entire frame, can effectively disperse and resist forces from all directions, and prevent the cross bar 35 from being distorted or deformed when supporting the two side shells 33; with such an arrangement, not only can the load-bearing capacity of a single cross bar 35 be improved, but also a stable network structure can be constructed through the mutual support of multiple triangles, so that the lateral stability of the entire bucket elevator is significantly improved.

Claims

1. A bucket elevator, comprising a lower machine base (1) and an upper machine base (2), wherein a body (3) is arranged above the lower machine base (1), a feed port (11) is arranged on the side of the lower machine base (1), a driven wheel (12) is arranged in the lower machine base (1), a driving wheel (22) is arranged in the upper machine base (2), the driving wheel (22) is connected to a motor (23), a discharge port (21) is arranged on one side of the upper machine base (2), a transmission chain (31) connected to the driven wheel (12) is sleeved on the driving wheel (22), the transmission chain (31) is arranged in the body (3), and buckets (32) are evenly distributed on the transmission chain (31), characterized in that: A fixed shaft (13) passing through the lower machine base (1) is provided at the center of the driven wheel (12); a through groove (15) for the fixed shaft (13) to slide up and down is provided on the lower machine base (1); fixed shaft seats (131) are provided at both ends of the fixed shaft (13); each fixed shaft seat (131) is slidably connected to the lower machine base (1); a control mechanism (4) for controlling the sliding of the fixed shaft seat (131) is provided at the top of the lower machine base (1); an output end of the control mechanism (4) is fixedly connected to the top of the fixed shaft seat (131); the control mechanism (4) is also electrically connected to a pressure sensor (5); and the pressure sensor (5) is arranged between the fixed shaft (13) and the driven wheel (12).

2. A bucket elevator according to claim 1, characterized in that: The control mechanism (4) comprises a telescopic mechanism (41) and a PLC controller. The telescopic mechanism (41) is arranged on the top of the lower machine base (1). The output end of the telescopic mechanism (41) is connected to the top of the fixed shaft seat (131). The telescopic mechanism (41) and the pressure sensor (5) are electrically connected to the PLC controller.

3. A bucket elevator as claimed in claim 1, characterized in that: The control mechanism (4) comprises a cylinder (42), a cylinder barrel (421) of the cylinder (42) being arranged on the top of the lower machine base (1), and a piston rod (422) of the cylinder (42) being fixedly connected to a fixed shaft seat (131).

4. A bucket elevator as claimed in claim 1, characterized in that: The lower machine base (1) is provided with slide rails (141) located on both sides of the through slot (15); the length of the slide rails (141) is greater than the length of the through slot (15); and sliding blocks (132) adapted to the slide rails (141) are provided on both sides of the fixed shaft seat (131).

5. A bucket elevator as claimed in claim 4, characterized in that: A cover plate is provided between two adjacent slide rails (141), and the cover plate is detachably arranged on the slide rail (141).

6. A bucket elevator as claimed in claim 5, characterized in that: The cover plate is a transparent cover plate.

7. A bucket elevator according to claim 1, characterized in that: The body (3) comprises two rectangular parallelepiped shells (33), each of which is respectively arranged to cover the outside of a transmission chain (31) located on both sides of a driven wheel (12), and an inspection window (34) is provided on the outside of the shell (33).

8. A bucket elevator as claimed in claim 7, characterized in that: A crossbar (35) is provided between the two shells (33), and a plurality of the crossbars (35) are evenly arranged along the length direction of the shell (33).

9. A bucket elevator as claimed in claim 8, characterized in that: An oblique brace (36) is provided between two adjacent cross bars (35), and a plurality of the oblique braces (36) are evenly arranged along the length direction of the cross bar (35), and a triangle is formed between the two adjacent oblique braces (36) and the cross bar (35).

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