Electric cylinder for logistics sorting

Abstract

The application provides an electric roller for logistics sorting, and relates to the field of material transportation. The electric roller for logistics sorting comprises a roller main body, the roller main body comprises an outer layer cylinder and an inner layer cylinder, the inner side of the outer layer cylinder is fixedly provided with a protruding block in contact with the inner layer cylinder, an arc-shaped plate is rotatably arranged in the slot of the inner layer cylinder, one end of the arc-shaped plate is in contact with the outer layer cylinder, an oil cylinder for containing hydraulic oil is fixedly arranged in the inner layer cylinder, and the outer side of the oil cylinder is communicated with a hydraulic pipe. The electric roller for logistics sorting is linked through the protruding block, the arc-shaped plate, the hydraulic pressure and the sliding piece. The heavier the goods are, the closer the sliding piece is to the end of the moment piece, the greater the force arm is, and the more labor-saving the driving is. The problem that the fixed parameters of the traditional electric roller are difficult to adapt to heavy loads is solved, the motor is prevented from being overloaded and burned out, the gradual sliding of the protruding block along the arc-shaped plate is realized, the heavy load instantaneous impact is offset through the hydraulic buffer, no additional weighing equipment needs to be additionally arranged, and subsequent sorting is facilitated.

Description

Technical Field

[0001] This invention relates to the field of material transportation, specifically to an electric roller for logistics sorting. Background Technology

[0002] In recent years, with the deep empowerment of the digital economy and Internet technology, the e-commerce industry has ushered in an unprecedented period of vigorous development. From daily consumer goods and fresh food to industrial parts and bulk commodities, the categories of online transactions are constantly enriched, the transaction scale continues to climb, and the daily order volume and parcel processing volume are growing exponentially. As the core hub connecting supply and demand, the logistics industry is facing unprecedented opportunities and challenges. Among them, the logistics sorting link, as a key node in the entire logistics chain, directly determines the overall quality of logistics services, delivery timeliness, and customer experience, becoming a core element affecting the industry's competitiveness. The market's demand for efficient, precise, and large-scale logistics sorting is becoming increasingly urgent. Therefore, automatic sorting machines have emerged. In order to meet the use of automatic sorting machines, conveyor lines are needed for automated feeding to improve conveying efficiency.

[0003] In automated conveying for logistics sorting, electric rollers are core transmission components. Their adaptability to material characteristics directly affects the stability and efficiency of conveying. However, most existing electric rollers use fixed transmission ratios and constant torque outputs, and their power parameters are preset fixed values. When conveying heavy materials, the motor needs to bear a large load, which not only easily causes overheating and triggers protection shutdown, but also shortens the service life of the equipment. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides an electric roller for logistics sorting, which solves the problems of existing electric rollers being insufficiently adaptable to heavy-duty equipment and prone to damage.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an electric roller for logistics sorting, comprising a roller body, the roller body comprising an outer cylinder and an inner cylinder, a protrusion fixedly installed on the inner side of the outer cylinder that contacts the inner cylinder, an arc-shaped plate rotatably installed in the groove of the inner cylinder, one end of the arc-shaped plate contacting the outer cylinder, an oil cylinder for loading hydraulic oil fixedly installed inside the inner cylinder, a hydraulic pipe connected to the outer side of the oil cylinder, a stopper rod slidably connected inside the hydraulic pipe, the head of the stopper rod abutting against the arc-shaped plate.

[0006] A power drive mechanism is installed at one end of the oil cylinder. The power drive mechanism includes a torque component, a sliding component, a piston, and meshing gears A and B. Gear A rotates relative to the oil cylinder. The central shaft of gear B is used to connect an external motor. The sliding component is fixed relative to the piston. The torque component has a cavity that communicates with the oil cylinder. The piston is slidably connected to the cavity. A pull plate is rotatably installed on the sliding component. The other end of the pull plate is hinged to gear A.

[0007] Preferably, a soft pad is fixedly provided on the outer surface of the outer cylinder. The soft pad has an arc surface structure with a rough surface. The soft pad is provided in several groups, and each group of soft pads is arranged along the circumference of the outer cylinder. The several groups of soft pads are staggered along the axial direction of the outer cylinder.

[0008] Preferably, the protrusions, slots, arc plates, and hydraulic pipes are all configured in two groups, with each group containing several protrusions, slots, arc plates, and hydraulic pipes, and distributed along the circumference of the inner cylinder.

[0009] Preferably, the arc-shaped plate has a protruding structure at one end near the outer cylinder, and a limiting rod is fixedly installed between the protruding parts of several sets of arc-shaped plates, and several limiting grooves are provided on the outer surface of the inner cylinder.

[0010] Preferably, the radial cross-section of the stopper head is arc-shaped, and the contact surface between the stopper head and the arc-shaped plate is set as a smooth surface.

[0011] Preferably, one end of the cavity is a narrow channel in which the piston slides, and the other end is a funnel shape that is narrow at the top and wide at the bottom.

[0012] Preferably, the torque member is provided with a slide rail, and the sliding member is slidably connected to the slide rail.

[0013] Preferably, a sealing plate is fixedly connected between the sliding member and the piston. The width and length of the sealing plate are greater than the width and length of the slide, respectively. The sealing plate is located inside the cavity and is in contact with the inner wall of the cavity.

[0014] Preferably, the angle between the slide rail and the pull plate is an obtuse angle.

[0015] Preferably, the power drive mechanism further includes a connecting member, and the oil cylinder, gear A and gear B are all rotatably connected to the connecting member.

[0016] Compared with existing technologies, this invention has the following advantages: Through the linkage of the protrusion, arc plate, hydraulic system, and sliding component, the heavier the goods, the closer the sliding component is to the end of the torque component, and the larger the lever arm, the less effort is required to drive it. This solves the problem that the fixed parameters of traditional electric rollers are difficult to adapt to heavy loads, and avoids motor overload and burnout. The progressive sliding of the protrusion along the arc plate and the locking cooperation of the limiting rod and limiting groove not only offset the instantaneous impact of heavy loads through hydraulic buffering, protecting the protrusion, arc plate, and materials, but also lock the inner and outer cylinders when the arc plate rotates to the limit position, ensuring stable transmission of heavy load power. The angle between the slide and the pull plate is always an obtuse angle. The greater the weight of the goods, the greater the displacement of the sliding component, and the smaller the angle between the slide and the pull plate. This allows for real-time observation of material weight changes, eliminating the need for additional weighing equipment and facilitating subsequent sorting. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the main structure of the drum of the present invention;

[0018] Figure 2 This is a sectional view of the front view of the main body of the roller of the present invention;

[0019] Figure 3 This is a sectional view of the side view of the main body of the drum of the present invention;

[0020] Figure 4 This is a schematic diagram of the power drive mechanism of the present invention;

[0021] Figure 5 This is a sectional view of the front view of the power drive mechanism of the present invention;

[0022] Figure 6 This is a schematic diagram of the inner tube structure of the present invention;

[0023] Figure 7 This is a sectional view of the side view of the torque component of the present invention;

[0024] Figure 8 This is a sectional view of the side view of the torque component, piston, and sealing plate of the present invention;

[0025] Figure 9 This is a sectional view of the side view of the piston rod and hydraulic pipe of the present invention;

[0026] Figure 10 This is a schematic diagram of the torque component of the present invention;

[0027] Figure 11 This is a schematic diagram of the arc-shaped plate and the limiting rod of the present invention;

[0028] Figure 12 This is a schematic diagram of the connector of the present invention.

[0029] The components include: 1. Roller body; 101. Outer cylinder; 102. Inner cylinder; 103. Groove; 2. Protrusion; 3. Arc plate; 4. Oil cylinder; 5. Hydraulic pipe; 6. Plug rod; 7. Power drive mechanism; 701. Torque component; 7011. Cavity; 702. Sliding component; 703. Piston; 704. Gear A; 705. Gear B; 706. Connecting component; 8. Pull plate; 9. Soft pad; 10. Slide rail; 11. Sealing plate; 12. Limiting rod. Detailed Implementation

[0030] like Figures 1-12As shown, an electric roller for logistics sorting includes a roller body 1. The roller body 1 comprises an outer cylinder 101 and an inner cylinder 102. Both ends of the outer cylinder 101 are fixedly fitted with circular cross-section collars. The inner cylinder 102 is located between the two collars to prevent the outer cylinder 101 from separating from the inner cylinder 102 along its axial direction. A soft pad 9 is fixedly provided on the outer surface of the outer cylinder 101. The soft pad 9 has an arc-shaped structure with a rough arc surface. Several groups of soft pads 9 are arranged, each group arranged circumferentially along the outer cylinder 101. These groups of soft pads 9 are staggered along the axial direction of the outer cylinder 101. The rough arc-shaped soft pad 9 on the outer surface of the outer cylinder 101 increases the contact friction with slippery materials such as smooth cardboard boxes, preventing material slippage. The circumferential and staggered distribution of the soft pads 9 increases the contact area with the material, while the arc-shaped structure provides cushioning. Material pressure is maintained to protect the material packaging. A protrusion 2 is fixedly installed on the inner side of the outer cylinder 101, which contacts the inner cylinder 102. An arc-shaped plate 3 is rotatably installed in the groove 103 of the inner cylinder 102 via a rotating shaft. One end of the arc-shaped plate 3 contacts the outer cylinder 101. An oil cylinder 4 for filling hydraulic oil is fixedly installed inside the inner cylinder 102. One end of the oil cylinder 4 is a sealed structure. A hydraulic pipe 5 is connected to the outside of the oil cylinder 4. A stopper rod 6 is slidably connected inside the hydraulic pipe 5. The head of the stopper rod 6 abuts against the arc-shaped plate 3, and the head of the stopper rod 6 is located inside the groove 103. The radial cross section of the head of the stopper rod 6 is arc-shaped. The contact surface between the head of the stopper rod 6 and the arc-shaped plate 3 is set as a smooth surface. The radial arc-shaped cross section of the head of the stopper rod 6 can improve the fit with the arc-shaped plate 3 and ensure the uniformity of the contact force. The smooth contact surface can reduce the friction loss when the stopper rod 6 and the arc-shaped plate 3 move relative to each other.

[0031] The protrusion 2, slot 103, arc plate 3, and hydraulic pipe 5 are all set in two groups, with each group containing several protrusions 2, slots 103, arc plates 3, and hydraulic pipes 5, distributed circumferentially along the inner cylinder 102. This arrangement of the protrusions 2, slots 103, arc plates 3, and hydraulic pipes 5 in two groups along the circumference of the inner cylinder 102 ensures more even force distribution between the inner cylinder 102 and the outer cylinder 101, dispersing the localized load from heavy materials, preventing excessive wear at a single location, and adapting to the conveying of materials with a wider weight range during loading and unloading. The arc plate 3 has a protrusion at the end near the outer cylinder 101. The structure includes a limiting rod 12 fixedly installed between the protruding parts of several sets of arc-shaped plates 3. The outer surface of the inner cylinder 102 is provided with several limiting grooves. When the protrusion 2 squeezes the arc-shaped plate 3 and drives the limiting rod 12 to move into the limiting groove, the arc-shaped plate 3 stops moving. The protruding part of the arc-shaped plate 3 prevents the protrusion 2 from continuing to move along the arc-shaped plate 3, ensuring that the inner cylinder 102 and the outer cylinder 101 are relatively stationary at this time. The cooperation between the protruding structure of the arc-shaped plate 3 and the limiting rod 12 and the limiting groove can achieve precise locking of the inner and outer cylinders 101 when the arc-shaped plate 3 is squeezed and rotated to the preset position by the protrusion 2, preventing excessive relative sliding between the two.

[0032] A power drive mechanism 7 is installed at one end of the oil cylinder 4. The power drive mechanism 7 includes a torque member 701, a sliding member 702, a piston 703, and meshing gears A704 and B705. Gear A704 rotates relative to the oil cylinder 4, and the central shaft of gear B705 is used to connect an external motor. The sliding member 702 is fixed relative to the piston 703. The torque member 701 has a cavity 7011 that communicates with the oil cylinder 4. One end of the cavity 7011 is a narrow channel in which the piston 703 slides. The other end is funnel-shaped, narrow at the top and wide at the bottom. The narrow channel section of the cavity 7011 can guide the sliding of the piston 703 and improve the stability of the piston 703's movement, while the funnel-shaped section can reduce... The flow resistance of hydraulic oil is reduced to improve the efficiency of hydraulic power transmission and ensure the sensitivity of torque adjustment. A slide rail 10 is provided on the torque component 701, and the sliding component 702 is slidably connected to the slide rail 10, improving the stability of the sliding component 702 during movement. A sealing plate 11 is fixedly connected between the sliding component 702 and the piston 703. The width and length of the sealing plate 11 are greater than the width and length of the slide rail 10, respectively. The sealing plate 11 is located inside the cavity 7011 and contacts the inner wall of the cavity 7011, serving a sealing function to prevent hydraulic oil in the cavity 7011 from overflowing from the slide rail 10. The angle between the slide rail 10 and the pull plate 8 is an obtuse angle. When conveying materials with high gravity, the inner and outer cylinders 101 rotate relative to each other. When in motion, the increased hydraulic oil pressure pushes the sliding member 702 towards the outer end of the torque member 701. At this time, the obtuse angle decreases as the position of the sliding member 702 changes, which can adapt to the displacement stroke of the sliding member 702 and effectively increase the torque to meet the power requirements for conveying heavy-duty materials. When the material is dislodged, when the gear A704 rotates, this initial obtuse angle is conducive to the application of force by the pull plate 8, so that the pull plate 8 can smoothly pull the sliding member 702 to squeeze the hydraulic oil, thereby driving the piston rod 6 to reset, and finally realizing the relative rotational return of the inner cylinder 102 and the outer cylinder 101. The power drive mechanism 7 also includes a connecting member 706. The oil cylinder 4, gear A704 and gear B705 are all rotatably connected to the connecting member 706. To facilitate the stable rotation of gears A704 and B705, piston 703 is slidably connected to cavity 7011. A pull plate 8 is rotatably mounted on sliding member 702, and the other end of pull plate 8 is hinged to gear A704. Through the double-layer cooperation of outer cylinder 101 and inner cylinder 102, combined with the linkage structure of protrusion 2, arc plate 3, hydraulic cylinder 4, and piston rod 6, adaptive adjustment of material load can be achieved by means of hydraulic transmission. At the same time, the hinged cooperation of gears, piston 703, and pull plate 8 in power drive mechanism 7 means that the greater the weight of the material, the closer sliding member 702 is to the end of torque member 701, making it easier to drive torque member 701 to rotate, avoiding motor overload, and improving the service life of electric roller.

[0033] In use, the roller body 1 is installed on an external conveying device. Symmetrical L-shaped side beams or vertical supports are designed on both sides of the conveying device. Bearing seat mounting holes are reserved on the side beams. The collars at both ends of the outer cylinder 101 are rotatably installed on the side beams through bearings. The roller body is suspended between the two side beams, and the connecting piece 706 is fixed on the side beams. Several of these electric rollers can be installed as a whole, directly contacting and transmitting materials. It is suitable for logistics sorting and conveying equipment in roller conveyor lines. Then, the external motor is connected to the central shaft of gear B705. The motor drives the central shaft and gear B705 to rotate. Gear B705 drives gear A704 to rotate. Gear A704 drives one end of the pull plate 8 to rotate. The other end of the pull plate 8 pulls the torque piece 701 to rotate through the sliding piece 702. The torque piece 701 drives the oil cylinder 4 and the inner cylinder 102 to rotate. The arc plate 3 on the inner cylinder 102 squeezes the protrusion 2, and the protrusion 2 drives the outer cylinder 101 to rotate, preparing for the conveying of goods.

[0034] When the outer cylinder 101 carries heavy materials (such as heavy industrial packages), the weight of the materials causes the outer cylinder 101 to tend to remain stationary relative to the inner cylinder 102. The protrusion 2 on the inner side of the outer cylinder 101 presses against the arc-shaped plate 3 in the groove 103 of the inner cylinder 102. The arc-shaped plate 3 rotates around the axis of the groove 103 and abuts against the stopper rod 6. The stopper rod 6 slides along the hydraulic pipe 5 toward the oil cylinder 4, squeezing the hydraulic oil in the hydraulic pipe 5 into the oil cylinder 4 and compressing the hydraulic oil in the oil cylinder 4. The hydraulic oil pressure is transmitted to the cavity 7011 of the torque component 701, pushing... The piston 703 slides along the narrow channel of the cavity 7011, causing the sliding member 702 to move along the slide rail 10 towards the outer end of the torque member 701. The heavier the conveyed goods, the greater the rotation angle of the arc plate 3, and the closer the sliding member 702 is to the end of the torque member 701. This results in a larger lever arm for the motor to drive the torque member 701 to rotate. According to the lever principle, the increased lever arm of the motor-driven torque member 701 achieves adaptive torque increase and avoids motor overload. When the arc plate 3 rotates to its limit angle, the rotation of the arc plate 3 drives the limit rod 12. 12 is inserted into the limiting groove of the inner cylinder 102. The protruding structure of the arc plate 3 prevents the protrusion 2 from moving further, locking the inner and outer cylinders 101 relative to each other, ensuring stable power transmission to the outer cylinder 101, and driving the conveying of heavy-duty materials. It should be noted that when heavy-duty materials (such as heavy packages) fall on the outer cylinder 101, their gravity is an instantaneous impact load, while the process of the protrusion 2 moving along the arc plate 3 is a gradual force application (the arc plate 3 gradually rotates as the protrusion 2 moves, and the stopper rod 6 gradually squeezes the hydraulic oil), which can convert the instantaneous impact load into a gradual force application. The continuous hydraulic buffer force significantly reduces the impact stress on the protrusion 2, arc plate 3, and stopper rod 6, preventing damage and greatly reducing the frequency of equipment maintenance and spare parts costs. Moreover, for impact-sensitive materials such as fragile items and precision components, the progressive buffer can offset the rigid impact force during heavy-load sliding, while preventing the material from shifting position due to impact. Furthermore, the buffer force can prevent the motor load from fluctuating suddenly, keeping the motor in a stable power output range, which reduces the instantaneous heat loss of the motor and also reduces the ineffective consumption of electrical energy.

[0035] After the heavy material is removed from the outer cylinder 101, the motor drives gear B705 to rotate, which in turn drives the meshing gear A704 to rotate synchronously. The angle between the slide rail 10 and the pull plate 8 should always be an obtuse angle, so that gear A704 can pull the sliding member 702 along the slide rail 10 towards the inside of the torque member 701 through the pull plate 8. The sliding member 702 drives the piston 703 to squeeze the hydraulic oil in the cavity 7011. The hydraulic oil pushes the piston rod 6 to reset along the hydraulic pipe 5. The piston rod 6 contacts the arc plate 3 and rotates in the opposite direction, causing the limit rod 1212 to disengage from the limit groove, finally causing the inner and outer cylinders 101 to be aligned. Rotate to the initial position to complete the reset and wait for the next material conveying; when the outer cylinder 101 carries light-load materials (such as thin express cardboard boxes), the material weight is small, the pressure of the outer cylinder 101 protrusion 2 on the arc plate 3 is insufficient, the stopper rod 6 does not slide obviously, the hydraulic oil pressure in the oil cylinder 4 is stable, the sliding part 702 is in a position close to the inner side of the torque part 701, the motor drives the torque part 701 to rotate through gear B705, gear A704 and pull plate 8, directly driving the inner cylinder 102 and the outer cylinder 101 to operate synchronously, realizing efficient and low-energy conveying of light-load materials.

[0036] It should be noted that the initial angle between the slide rail 10 and the pull plate 8 is an obtuse angle, and the length of the pull plate 8 remains constant. When transporting lightly loaded materials, the material weight is small, the squeezing force of the outer cylinder 101 protrusion 2 on the arc plate 3 is weak, the stopper rod 6 has no obvious displacement, the hydraulic oil pressure remains in its initial state, and the sliding member 702 stays in the initial position of the slide rail 10 near the inner side of the torque member 701. At this time, the angle between the slide rail 10 and the pull plate 8 remains at its maximum value. When transporting medium-weight materials, the weight of the material causes the protrusion 2 to squeeze the arc plate 3 to rotate, pushing the stopper rod 6 to squeeze the hydraulic oil. The hydraulic oil pressure drives the piston 703 to move the sliding member 702 along the slide rail 10 towards the outer end of the torque member 701. Since the length of the pull plate 8 is fixed, the sliding member 702 moves along the slide rail 10 towards the outer end of the torque member 701. As the sliding member 702 moves outward, the angle between the pull plate 8 and the slide rail 10 will decrease synchronously. When transporting heavy materials, the weight of the materials will increase further, the pressure of the protrusion 2 on the arc plate 3 will be stronger, the displacement of the stop rod 6 will reach its maximum, the sliding member 702 will move to the outermost end of the slide rail 10, and the angle between the pull plate 8 and the slide rail 10 will decrease to its minimum value. It should be noted that the minimum angle between the pull plate 8 and the slide rail 10 should not be lower than 90 degrees. Throughout the process, the weight of the goods and the reduction of the angle are positively correlated and linearly related. The greater the weight, the greater the displacement of the sliding member 702 and the smaller the angle. Moreover, this linkage has no lag and can respond to changes in the weight of the materials in real time. No additional weighing equipment is required, which also helps with subsequent sorting.

[0037] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An electric roller for logistics sorting, comprising a roller body (1), characterized in that: The main body of the roller (1) includes an outer cylinder (101) and an inner cylinder (102). A protrusion (2) that contacts the inner cylinder (102) is fixedly installed on the inner side of the outer cylinder (101). An arc plate (3) is rotatably installed in the groove (103) of the inner cylinder (102). One end of the arc plate (3) contacts the outer cylinder (101). An oil cylinder (4) for filling hydraulic oil is fixedly installed inside the inner cylinder (102). A hydraulic pipe (5) is connected to the outside of the oil cylinder (4). A stopper rod (6) is slidably connected inside the hydraulic pipe (5). The head of the stopper rod (6) abuts against the arc plate (3). One end of the oil cylinder (4) is equipped with a power drive mechanism (7). The power drive mechanism (7) includes a torque member (701), a sliding member (702), a piston (703), and meshing gears A (704) and B (705). Gear A (704) rotates relative to the oil cylinder (4). The central shaft of gear B (705) is used to connect an external motor. The sliding member (702) is fixed relative to the piston (703). The torque member (701) has a cavity (7011) that communicates with the oil cylinder (4). The piston (703) is slidably connected to the cavity (7011). A pull plate (8) is rotatably mounted on the sliding member (702). The other end of the pull plate (8) is hinged to gear A (704).

2. The electric roller for logistics sorting according to claim 1, characterized in that: The outer surface of the outer cylinder (101) is fixedly provided with a soft pad (9). The soft pad (9) has an arc surface structure and its arc surface is a rough surface. The soft pad (9) is in several groups. Each group of soft pads (9) is arranged along the circumference of the outer cylinder (101). The several groups of soft pads (9) are staggered along the axial direction of the outer cylinder (101).

3. The electric roller for logistics sorting according to claim 1, characterized in that: The protrusions (2), slots (103), arc plates (3) and hydraulic pipes (5) are all set in two groups. The number of protrusions (2), slots (103), arc plates (3) and hydraulic pipes (5) in each group is several, and they are distributed along the circumference of the inner cylinder (102).

4. An electric roller for logistics sorting according to claim 3, characterized in that: The arc plate (3) has a protruding structure at one end near the outer cylinder (101), and a limiting rod (12) is fixedly installed between the protruding parts of several sets of arc plates (3), and several limiting grooves are provided on the outer surface of the inner cylinder (102).

5. An electric roller for logistics sorting according to claim 1, characterized in that: The radial cross-section of the head of the stopper (6) is arc-shaped, and the contact surface between the head of the stopper (6) and the arc plate (3) is set as a smooth surface.

6. An electric roller for logistics sorting according to claim 1, characterized in that: One end of the cavity (7011) is a narrow channel in which the piston (703) slides, and the other end is a funnel shape that is narrow at the top and wide at the bottom.

7. An electric roller for logistics sorting according to claim 1, characterized in that: The torque component (701) is provided with a slide rail (10), and the sliding component (702) is slidably connected to the slide rail (10).

8. An electric roller for logistics sorting according to claim 7, characterized in that: A sealing plate (11) is fixedly connected between the sliding member (702) and the piston (703). The width and length of the sealing plate (11) are greater than the width and length of the slide (10), respectively. The sealing plate (11) is located in the cavity (7011) and is in contact with the inner wall of the cavity (7011).

9. An electric roller for logistics sorting according to claim 7, characterized in that: The angle between the slide (10) and the pull plate (8) is an obtuse angle.

10. An electric roller for logistics sorting according to claim 1, characterized in that: The power drive mechanism (7) also includes a connector (706), and the oil cylinder (4), gear A (704) and gear B (705) are rotatably connected to the connector (706).

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