An extendable conveyor

Abstract

The utility model belongs to the conveyor technical field, concretely is a kind of telescopic conveyor, including base, the base inner cavity rotationally connected with support frame, the support frame inner cavity one side is fixedly connected with second fixed block, the support frame inner cavity one side is fixedly connected with first fixed block, the first fixed block one side is fixedly connected with the output shaft end of electric push rod, the support frame inner cavity slidingly connected with first telescopic sleeve, the first telescopic sleeve inner cavity slidingly connected with second telescopic sleeve, the second telescopic sleeve and support frame outside transmission connection have conveying belt;It has solved the telescopic conveyor of existing telescopic conveyor usually is by hydraulic cylinder and is pushed telescopic machine to move upward to adjust angle, and if hydraulic cylinder appears the problem of the case, due to not having emergency brake component, then it will lead to telescopic machine to be quickly smashed down to object and surrounding work staff to cause security risk.

Description

Technical Field

[0001] This utility model belongs to the field of conveyor technology, specifically a telescopic conveyor. Background Technology

[0002] Telescopic conveyors are generally used in logistics centers, corporate warehouses, express delivery, airports and other occasions. They require great flexibility, short handling and transportation time and high efficiency during the process of handling and transporting goods.

[0003] Currently, telescopic conveyors typically consist of a fixed section nested in sequence and at least one telescopic section. The telescopic section can extend and retract along the previous telescopic section or the fixed section. However, during the movement of the telescopic section, it is prone to swaying as the extension size changes, resulting in unstable extension and retraction. In addition, the locking mechanism of existing telescopic conveyors is poorly designed, making it difficult to lock the telescopic section in time after it has moved into place, which poses certain safety hazards.

[0004] Therefore, this utility model provides a telescopic conveyor to solve the technical problems mentioned in the background art. Utility Model Content

[0005] The technical solution adopted by this utility model to solve its technical problem is as follows: The telescopic conveyor of this utility model includes a base, a support frame rotatably connected to the inner cavity of the base, a second fixed block fixed to one side of the inner cavity of the support frame, a first fixed block fixed to one side of the inner cavity of the support frame, an output shaft end of an electric push rod fixed to one side of the first fixed block, a first telescopic sleeve slidably connected to the inner cavity of the support frame, a second telescopic sleeve slidably connected to the inner cavity of the first telescopic sleeve, and a conveyor belt connected to the outside of the second telescopic sleeve and the support frame. A fixing frame is fixedly installed on one side of the inner cavity of the first telescopic sleeve. The fixing frame is fixedly installed with the electric push rod. Two limiting sleeves are installed in the inner cavity of the second telescopic sleeve. A chain is fixedly installed in the inner cavity of one of the limiting sleeves. One end of the chain passes through the other limiting sleeve and is fixedly connected to the second fixing block. One end of the electric push rod is rotatably connected to a sprocket, the chain is driven by the sprocket, and the inner cavity of the first telescopic sleeve is rotatably connected to a limit wheel, which is used to limit the chain.

[0006] Preferably, a U-shaped fixing frame is fixedly connected to one side of the lower end of the support frame, and a hydraulic push rod is rotatably connected to the outside of the U-shaped fixing frame. The lower end of the hydraulic push rod is rotatably connected to the base, and a support block is fixedly connected to one side of the inner cavity of the base.

[0007] Preferably, the inner wall of the base has a groove, a sliding column is fixedly connected to the inner cavity of the groove, a slider is slidably connected to the outside of the sliding column, a spring is fixedly connected to one side of the slider, and one end of the spring is fixedly connected to the inner wall of the groove.

[0008] Preferably, a first rotating column is rotatably connected between the sliders, a second rotating column is rotatably connected to one side of the inner wall of the base, and a third rotating column is rotatably connected to the other side of the base, wherein the first rotating column, the second rotating column, and the third rotating column are used to drive the conveyor belt.

[0009] Preferably, U-shaped support blocks are fixedly connected to both sides of the lower end of the support frame, a rotating block is rotatably connected to the inner cavity of the U-shaped support block, and a lead screw is rotatably connected to the lower end of the rotating block.

[0010] Preferably, a rotating cylinder is slidably connected to the outside of the lead screw, the lower end of the rotating cylinder is rotatably connected to the base, and a round block is fixed to the inner wall of the rotating cylinder, and the round block is slidably connected in the screw groove of the lead screw.

[0011] The beneficial effects of this utility model are as follows: 1. The telescopic conveyor of this utility model drives the first fixed block to move by activating an electric push rod, which in turn drives the fixed frame to move synchronously. At the same time, the electric push rod drives the chain to rotate via a sprocket, which in turn drives the first telescopic sleeve to telescopically move. Simultaneously, the chain is driven by the sprocket, and the chain pulls the second telescopic sleeve to telescopically move via a limiting sleeve. This achieves synchronous telescopic movement of the first and second telescopic sleeves, ensuring that the position of the first telescopic sleeve in the inner cavity of the support frame is consistent with the position of the second and first telescopic sleeves in the inner cavity, increasing the stability of the conveyor belt after telescopic movement. Moreover, the sealed support frame, in conjunction with the first and second telescopic sleeves, facilitates the replacement and installation of the conveyor belt, improving the convenience of conveyor maintenance.

[0012] 2. The telescopic conveyor of this utility model uses a support frame to drive a U-shaped support block upwards, which in turn drives a rotating block upwards. The rotating block then drives a lead screw to move synchronously. As the lead screw moves synchronously with the rotating block, it rotates within the rotating cylinder, thus ensuring the stability of the support frame's upward movement. If the hydraulic push rod experiences a cylinder failure, the support frame will push the U-shaped support block downwards, causing the rotating block to move downwards as well. Simultaneously, the rotating block pushes the lead screw to contact the round block, which then slowly rotates with the round block. This provides emergency braking to the support frame, allowing it to descend slowly and preventing a sudden collapse of the first and second telescopic sleeves, which could endanger the lives of workers below. Attached Figure Description

[0013] The present invention will be further described below with reference to the accompanying drawings.

[0014] Figure 1This is a schematic diagram of the overall structure of the main view of this utility model; Figure 2 This is a partial cross-sectional structural diagram of the support frame of this utility model; Figure 3 This is a partial cross-sectional structural diagram of the base of this utility model; Figure 4 This is a half-sectional structural diagram of the base of this utility model; Figure 5 This is a bottom view of the telescopic mechanism of this utility model; Figure 6 This is a schematic diagram of the assembly structure of the lead screw of this utility model; Figure 7 This is a half-sectional structural diagram of the rotating cylinder of this utility model; In the diagram: 1. Base; 2. Conveyor belt; 3. Support frame; 4. First telescopic sleeve; 5. Second telescopic sleeve; 6. Electric push rod; 7. Fixing frame; 8. First fixing block; 9. Second fixing block; 10. Limiting sleeve; 11. Chain; 12. Sprocket; 13. Limiting wheel; 14. Slider; 15. First rotating column; 16. Second rotating column; 17. Third rotating column; 18. Hydraulic push rod; 19. U-shaped fixing frame; 20. Support block; 21. U-shaped support block; 22. Rotating block; 23. Lead screw; 24. Rotating cylinder; 25. Round block; 26. Groove; 27. Sliding column; 28. Spring. Detailed Implementation

[0015] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0016] like Figures 1 to 7 As shown in the embodiment of this utility model, a telescopic conveyor includes a base 1, a support frame 3 rotatably connected to the inner cavity of the base 1, a second fixing block 9 fixed to one side of the inner cavity of the support frame 3, a first fixing block 8 fixed to one side of the inner cavity of the support frame 3, an output shaft end of an electric push rod 6 fixed to one side of the first fixing block 8, a first telescopic sleeve 4 slidably connected to the inner cavity of the support frame 3, a second telescopic sleeve 5 slidably connected to the inner cavity of the first telescopic sleeve 4, and a conveyor belt 2 connected to the outside of the second telescopic sleeve 5 and the support frame 3. A fixing frame 7 is fixedly installed on one side of the inner cavity of the first telescopic sleeve 4. The fixing frame 7 is fixedly installed with the electric push rod 6. Two limiting sleeves 10 are installed in the inner cavity of the second telescopic sleeve 5. A chain 11 is fixedly installed in the inner cavity of one of the limiting sleeves 10. One end of the chain 11 passes through the other limiting sleeve 10 and is fixedly connected to the second fixing block 9. One end of the electric push rod 6 is rotatably connected to a sprocket 12, and the chain 11 is connected to the sprocket 12 for transmission. The inner cavity of the first telescopic sleeve 4 is rotatably connected to a limit wheel 13, and the limit wheel 13 is used to limit the chain 11.

[0017] Specifically, during operation, the electric push rod 6 drives the first fixed block 8 to move, which in turn causes the electric push rod 6 to move the fixed frame 7 synchronously. Simultaneously, the electric push rod 6 uses the sprocket 12 to drive the chain 11 to rotate, causing the fixed frame 7 to extend and retract the first telescopic sleeve 4. At the same time, the sprocket 12 drives the chain 11, which in turn pulls the second telescopic sleeve 5 through the limiting sleeve 10, thus achieving synchronous extension and retraction of the first and second telescopic sleeves 4 and 5. This ensures that the position of the first telescopic sleeve 4 within the support frame 3 and the positions of the second and first telescopic sleeves 5 within the support frame 3 maintain a uniform length, increasing the stability of the conveyor belt 2 after extension and retraction. Furthermore, the sealed support... The support frame 3, together with the first telescopic sleeve 4 and the second telescopic sleeve 5, facilitates the replacement and installation of the conveyor belt 2, improving the convenience of conveyor maintenance. This solves the problem that in existing telescopic conveyors, the telescopic components for the conveyor belt are usually located inside the telescopic frame, making it inconvenient to disassemble and install the conveyor belt during replacement and maintenance. This also makes it difficult to disassemble the conveyor belt and telescopic components during maintenance. Furthermore, conveyors typically include a fixed section and at least one telescopic section nested in sequence. The telescopic section can extend and retract along the previous telescopic section or fixed section. However, during the movement of the telescopic section, as the extension size of the telescopic section changes, the telescopic section is prone to swaying, leading to unstable extension and retraction.

[0018] like Figures 4 to 6 As shown, a U-shaped fixing frame 19 is fixedly connected to one side of the lower end of the support frame 3. A hydraulic push rod 18 is rotatably connected to the outside of the U-shaped fixing frame 19, and the lower end of the hydraulic push rod 18 is rotatably connected to the base 1. A support block 20 is fixedly connected to one side of the inner cavity of the base 1.

[0019] like Figures 3 to 6 As shown, a groove 26 is provided on the inner wall of the base 1. A sliding column 27 is fixedly connected to the inner cavity of the groove 26. A slider 14 is slidably connected to the outside of the sliding column 27. A spring 28 is fixedly connected to one side of the slider 14, and one end of the spring 28 is fixedly connected to the inner wall of the groove 26.

[0020] like Figures 3 to 6 As shown, a first rotating column 15 is rotatably connected between the sliders 14, a second rotating column 16 is rotatably connected to one side of the inner wall of the base 1, and a third rotating column 17 is rotatably connected to the other side of the base 1. The first rotating column 15, the second rotating column 16 and the third rotating column 17 are used to drive the conveyor belt 2.

[0021] Specifically, when it is necessary to adjust the angle of the conveyor belt 2 to transport objects, the hydraulic push rod 18 is activated to drive the U-shaped fixing frame 19 to move upward, and the U-shaped fixing frame 19 pushes the support frame 3 to move upward. Then, the support frame 3 is rotated and connected to the inner cavity of the base 1 to adjust the angle. At the same time, the electric push rod 6 drives the first telescopic sleeve 4 and the second telescopic sleeve 5 to adjust the length of the conveyor belt 2. During the adjustment of the angle and length, the conveyor belt 2 will drive the first rotating column 15 to move. At the same time, the first rotating column 15 drives the slider 14 to slide outside the sliding column 27, and the slider 14 squeezes the spring 28 to move. Then, the rebound force of the spring 28 pushes the slider 14 to drive the first rotating column 15, and the first rotating column 15 pushes the conveyor belt 2 to move, so that the conveyor belt 2 always maintains a certain tension, ensuring the stability of the operation of the conveyor belt 2 and avoiding slippage of the conveyor belt 2 due to insufficient tension when transporting objects.

[0022] like Figure 6 and Figure 7 As shown, U-shaped support blocks 21 are fixedly connected to both sides of the lower end of the support frame 3. A rotating block 22 is rotatably connected to the inner cavity of the U-shaped support block 21, and a lead screw 23 is rotatably connected to the lower end of the rotating block 22.

[0023] like Figure 6 and Figure 7 As shown, a rotating cylinder 24 is slidably connected to the outside of the lead screw 23. The lower end of the rotating cylinder 24 is rotatably connected to the base 1. A round block 25 is fixed to the inner wall of the rotating cylinder 24, and the round block 25 is slidably connected in the screw groove of the lead screw 23.

[0024] Specifically, when the hydraulic push rod 18 drives the support frame 3 to move upward for angle adjustment, the support frame 3 drives the U-shaped support block 21 to move upward. Simultaneously, the U-shaped support block 21 drives the rotating block 22 to move upward, and the rotating block 22 drives the lead screw 23 to move synchronously. As the lead screw 23 moves synchronously with the rotating block 22, it rotates within the rotating cylinder 24 in conjunction with the circular block 25. This ensures the stability of the upward movement of the support frame 3. If the hydraulic push rod 18 experiences a cylinder failure, the support frame 3 will push the U-shaped support block 21 downward, and the U-shaped support block 21 will also drive the rotating block 22 downward. Simultaneously, the rotating block 22 pushes the lead screw 23 to abut against the round block 25, and the lead screw 23 will slowly rotate with the round block 25, thereby applying emergency braking to the support frame 3, causing the support frame 3 to slowly move downwards and descend. This avoids the situation where, if the hydraulic push rod 18 bursts, the support frame 3 will cause the first telescopic sleeve 4 and the second telescopic sleeve 5 to fall rapidly, posing a safety hazard to the workers below. This solves the problem that existing telescopic conveyors usually adjust the angle by pushing the telescopic machine upwards with a hydraulic cylinder. If the hydraulic cylinder bursts, the telescopic machine will fall rapidly, posing a safety hazard to objects and surrounding workers.

[0025] Working principle: By activating the electric push rod 6, the first fixed block 8 is moved, which in turn causes the electric push rod 6 to drive the fixed frame 7 to move synchronously. At the same time, the electric push rod 6 drives the chain 11 to rotate through the sprocket 12, which in turn causes the fixed frame 7 to drive the first telescopic sleeve 4 to telescopically move. Simultaneously, the chain 11 is driven by the sprocket 12, and the chain 11 pulls the second telescopic sleeve 5 to telescopically move through the limiting sleeve 10. This achieves synchronous telescopic movement of the first telescopic sleeve 4 and the second telescopic sleeve 5, ensuring that the position of the first telescopic sleeve 4 in the inner cavity of the support frame 3 and the position of the second telescopic sleeve 5 in the inner cavity of the first telescopic sleeve 4 are of the same length. This increases the stability of the conveyor belt 2 after telescopic movement. Moreover, the sealed support frame 3, together with the first telescopic sleeve 4 and the second telescopic sleeve 5, facilitates the replacement and installation of the conveyor belt 2, improving the convenience of conveyor maintenance. When the hydraulic push rod 18 drives the support frame 3 to move upward for angle adjustment, the support frame 3 drives the U-shaped support block 21 to move upward. At the same time, the U-shaped support block 21 drives the rotating block 22 to move upward, and the rotating block 22 drives the lead screw 23 to move synchronously. As the lead screw 23 moves synchronously with the rotating block 22, it will rotate in the inner cavity of the rotating cylinder 24 in conjunction with the round block 25. This ensures the stability of the upward movement of the support frame 3. If the hydraulic push rod 18 explodes, the support frame 3 will push the U-shaped support block 21 to move downward. At the same time, the U-shaped support block 21 drives the rotating block 22 to move downward. Simultaneously, the rotating block 22 pushes the lead screw 23 to abut against the round block 25. The lead screw 23 will slowly rotate with the round block 25, thereby providing emergency braking to the support frame 3 and causing it to slowly move downward. This prevents the support frame 3 from crashing down with the first telescopic sleeve 4 and the second telescopic sleeve 5 after the hydraulic push rod 18 explodes, which could endanger the lives of the workers below.

[0026] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A telescopic conveyor, characterized in that: Includes a base (1), a support frame (3) is rotatably connected to the inner cavity of the base (1), a second fixing block (9) is fixedly connected to one side of the inner cavity of the support frame (3), a first fixing block (8) is fixedly connected to one side of the inner cavity of the support frame (3), the output shaft end of an electric push rod (6) is fixedly connected to one side of the first fixing block (8), a first telescopic sleeve (4) is slidably connected to the inner cavity of the support frame (3), a second telescopic sleeve (5) is slidably connected to the inner cavity of the first telescopic sleeve (4), and a conveyor belt (2) is connected to the outside of the second telescopic sleeve (5) and the support frame (3). A fixing frame (7) is fixedly installed on one side of the inner cavity of the first telescopic sleeve (4). The fixing frame (7) is fixedly installed with the electric push rod (6). Two limiting sleeves (10) are installed in the inner cavity of the second telescopic sleeve (5). A chain (11) is fixedly installed in the inner cavity of one of the limiting sleeves (10). One end of the chain (11) passes through the other limiting sleeve (10) and is fixedly connected to the second fixing block (9). One end of the electric push rod (6) is rotatably connected to a sprocket (12), the chain (11) is connected to the sprocket (12) in a transmission, and the inner cavity of the first telescopic sleeve (4) is rotatably connected to a limiting wheel (13), which is used to limit the chain (11).

2. The telescopic conveyor according to claim 1, characterized in that: A U-shaped fixing frame (19) is fixedly connected to one side of the lower end of the support frame (3). A hydraulic push rod (18) is rotatably connected to the outside of the U-shaped fixing frame (19), and the lower end of the hydraulic push rod (18) is rotatably connected to the base (1). A support block (20) is fixedly connected to one side of the inner cavity of the base (1).

3. A telescopic conveyor according to claim 1, characterized in that: The base (1) has a groove (26) on its inner wall. A sliding column (27) is fixedly connected to the inner cavity of the groove (26). A slider (14) is slidably connected to the outside of the sliding column (27). A spring (28) is fixedly connected to one side of the slider (14), and one end of the spring (28) is fixedly connected to the inner wall of the groove (26).

4. A telescopic conveyor according to claim 3, characterized in that: The sliders (14) are rotatably connected by a first rotating column (15), the inner wall of the base (1) is rotatably connected by a second rotating column (16), and the other side of the base (1) is rotatably connected by a third rotating column (17). The first rotating column (15), the second rotating column (16) and the third rotating column (17) are used to drive the conveyor belt (2).

5. A telescopic conveyor according to claim 1, characterized in that: The support frame (3) has U-shaped support blocks (21) fixedly connected to both sides of its lower end. A rotating block (22) is rotatably connected to the inner cavity of the U-shaped support block (21). A lead screw (23) is rotatably connected to the lower end of the rotating block (22).

6. A telescopic conveyor according to claim 5, characterized in that: The lead screw (23) is slidably connected to a rotating cylinder (24), the lower end of the rotating cylinder (24) is rotatably connected to the base (1), and a round block (25) is fixedly connected to the inner wall of the rotating cylinder (24), and the round block (25) is slidably connected in the groove of the lead screw (23).

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