Liftable loading and unloading vehicle applied to narrow space

Abstract

The utility model relates to a kind of application in narrow space's liftable loading and unloading operation vehicle, including a scissor fork lift truck, the lifting mechanism top of this scissor fork lift truck is provided with a platform, platform top is provided with a rectangular frame, rectangular frame is connected with two guide rails, one telescopic frame is slidably arranged between two guide rails, the telescopic frame both sides are slidably connected in two clamping slots, the both ends of two guide rails are provided with the limiting device for the telescopic range of telescopic frame is limited. The telescopic frame is lifted to the height of electric fan using scissor fork lift truck, then the mounting rack of electric fan is extended to telescopic frame by telescopic frame, and operator can move electric fan to telescopic frame by push-pull mode by loosening the fixing bolt of electric fan, solve the technical problem that electric fan in high and narrow space in spinning workshop is inconvenient to replace.

Description

Technical Field

[0001] This utility model belongs to the field of conveying and transfer technology, specifically relating to a lifting and unloading vehicle for use in confined spaces. Background Technology

[0002] In conventional workshops, cranes or forklifts can be used to transport equipment at heights. However, in the spinning workshops of yarn mills, the close spacing between spinning equipment makes it difficult to use forklifts for transporting equipment at heights. Since spinning workshops typically do not have cranes, the replacement of spinning equipment at heights must be done manually. For example, in a spinning workshop, the adsorption device used to collect fibers shed during spinning is mainly powered by an electric fan and connected ductwork. To facilitate ductwork drainage, the electric fan is installed in a small space at a height of 1.6 meters. Because the electric fan weighs over 200 kilograms, multiple operators are needed to move it, resulting in high labor intensity for the operators. Furthermore, operating in a confined space at a height is extremely inconvenient and poses a significant safety hazard. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a lifting and unloading vehicle for use in confined spaces, thereby solving the technical problem of inconvenient replacement of electric fans in high and confined spaces in spinning workshops.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: a lifting and unloading vehicle for use in confined spaces, including a scissor lift vehicle. The lifting mechanism of the scissor lift vehicle has a platform at the top, and a column is vertically connected to each of the four corners of the platform. A rectangular frame is connected to the top of the four columns. Two parallel "7"-shaped guide rails are connected to the rectangular frame. The two guide rails are respectively connected to one side of the two long sides of the rectangular frame and extend along the long sides of the rectangular frame. Each guide rail and the upper surface of the rectangular frame form a "["-shaped groove. The openings of the grooves formed by the two guide rails are opposite to each other. A telescopic frame is slidably installed between the two guide rails. The two sides of the telescopic frame are slidably engaged in the two grooves. Both ends of the two guide rails are provided with limiting devices to limit the extension range of the telescopic frame.

[0005] As a preferred embodiment, the two long sides of the rectangular frame are connected by multiple rollers arranged discretely along the extension direction of the guide rails. The rollers are set perpendicular to the two guide rails, and the upper edges of the multiple rollers are on the same plane and located above the bottom surface of the slot. The telescopic frame rests on the rollers and is supported by the rollers, sliding along the slot on the rollers.

[0006] As a preferred embodiment, the rectangular frame has one end as the front end and the other end as the rear end. The telescopic frame can extend outward from the front end of the rectangular frame beyond the two guide rails to form an outward cantilever state. A drive motor is installed at the rear of the platform. A front sprocket is rotatably connected to the front end of the rectangular frame, and a rear sprocket is connected to the rear end. An intermediate sprocket is installed at the bottom of the rectangular frame, located below the rectangular frame and connected to the rectangular frame through a support. A reversing sprocket is installed between the rear ends of the two guide rails. The axes of the front sprocket, intermediate sprocket, rear sprocket, and reversing sprocket are all perpendicular to the telescopic direction of the telescopic frame. The rear end of the telescopic frame is fixedly connected to one end of a traction chain. The traction chain passes sequentially around the front sprocket, intermediate sprocket, rear sprocket, and reversing sprocket before returning to the rear end of the telescopic frame and being fixedly connected thereto to form a closed loop. A driven wheel is coaxially connected to the intermediate sprocket. A driving wheel is connected to the output shaft of the drive motor. The driving wheel and the driven wheel are connected in a transmission connection, driving the driven wheel and the intermediate sprocket to rotate.

[0007] As a preferred embodiment, the limiting device includes a front photoelectric sensor located at the front of the two guide rails and a rear photoelectric sensor located at the rear of the two guide rails. The front photoelectric sensor and the rear photoelectric sensor are each electrically connected to a controller. The controller is electrically connected to the drive motor and is used to control the drive motor. The controller is connected to an input device for the operator to send commands to the controller.

[0008] As a preferred embodiment, the platform is also equipped with a rechargeable power supply, which is used to provide power to the drive motor and the controller.

[0009] As a preferred embodiment, the scissor lift has wheels at the four corners of its base, and a handrail for pushing and pulling the scissor lift is provided on one side of the rear end of the rectangular frame. The drive mechanism of the scissor lift is an electric push rod, which is electrically connected to a rechargeable power supply and a controller.

[0010] As a preferred embodiment, the front end of the telescopic frame is wedge-shaped, with the inclined surface of the wedge-shaped front end facing forward and upward.

[0011] The beneficial effects of this utility model are as follows: This utility model utilizes a scissor lift to raise the telescopic frame to the height of the electric fan. Then, by extending the telescopic frame, it extends onto the mounting frame of the electric fan. The operator only needs to loosen the fixing bolts of the electric fan to move it onto the telescopic frame by pushing and pulling. Then, by controlling the telescopic frame to retract, the telescopic frame can move the electric fan above the rectangular frame. Then, the platform is controlled to descend, lowering the electric fan to a height that is convenient for the operator to operate on the ground. The operator can then move the electric fan to the warehouse using a liftable loading and unloading vehicle. Finally, the operation is reversed to reinstall the electric fan that needs to be replaced back into its assembly position. The entire disassembly and installation process greatly reduces the labor intensity of the operator and makes the operation safer. Attached Figure Description

[0012] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings, wherein: Figure 1 This is a structural schematic diagram of the lifting and unloading vehicle described in this utility model; Figure 2 yes Figure 1 A schematic diagram showing the extended state of the telescopic frame of the lifting and unloading vehicle. Figure 3 This is a schematic diagram of the telescopic frame assembly structure; Figures 1-3 Components: 1. Scissor lift truck; 101. Lifting mechanism; 102. Platform; 103. Base; 104. Casters; 105. Handrail; 106. Electric push rod; 2. Column; 3. Rectangular frame; 4. Guide rail; 5. Slot; 6. Telescopic frame; 7. Limiting device; 8. Idler roller; 9. Drive motor; 10. Front sprocket; 11. Rear sprocket; 12. Intermediate sprocket; 13. Reversing sprocket; 14. Traction chain; 15. Driven wheel; 16. Drive wheel; 17. Controller; 18. Input device; 19. Rechargeable power supply. Detailed Implementation

[0013] The specific implementation scheme of this utility model will now be described in detail with reference to the accompanying drawings.

[0014] A lifting and unloading vehicle for use in confined spaces includes a scissor lift 1. The lifting mechanism 101 of the scissor lift 1 has a platform 102 at its top. A column 2 is vertically connected to each of the four corners of the platform 102. A rectangular frame 3 is connected to the top of the four columns 2. Two parallel "7"-shaped guide rails 4 are connected to the rectangular frame 3. The two guide rails 4 are respectively connected to one side of the two long sides of the rectangular frame 3 and extend along the long sides of the rectangular frame 3. Each guide rail 4 and the upper surface of the rectangular frame 3 form a "["-shaped slot 5. The slots 5 formed by the two guide rails 4 have openings facing each other. A telescopic frame 6 is slidably arranged between the two guide rails 4. The telescopic frame 6 is slidably engaged in the two slots 5 on both sides. Both ends of the two guide rails 4 are provided with limiting devices 7 to limit the extension range of the telescopic frame 6.

[0015] In operation, the user first controls the scissor lift 1 to raise platform 102. Operators can stand on platforms 102 on either side of the rectangular frame 3, or use other leveling devices to reach the side of the electric fan to be dismantled. The operator then controls the telescopic frame 6 to extend from the front of the rectangular frame 3 towards the electric fan, ensuring the telescopic frame 6 is close to the fan and slightly lower than its height. After removing the fan's fixing bolts, the operator pulls the fan onto the telescopic frame 6. The operator then retracts the telescopic frame 6, which pulls the fan back onto the rectangular frame 3. The operator then lowers platform 102 of the scissor lift 1. Once on the ground, the operator pushes the lifting and unloading vehicle to the warehouse, replaces the old fan, and then reverses the process to reinstall the new fan in its original position. This entire dismantling and installation process significantly reduces the operator's workload and enhances their safety.

[0016] The rectangular frame 3 is connected between its two long sides by multiple rollers 8 arranged discretely along the extension direction of the guide rail 4. The rollers 8 are set perpendicular to the two guide rails 4. The upper edges of the multiple rollers 8 are on the same plane and located above the bottom surface of the slot 5. The telescopic frame 6 rests on the rollers 8 and is supported by the rollers 8, and slides along the slot 5 on the rollers 8 to reduce the moving resistance of the telescopic frame 6.

[0017] The rectangular frame 3 has a front end and a rear end along its length. The telescopic frame 6 can extend outward from the front end of the rectangular frame 3 beyond the two guide rails 4 to form an outward cantilevered state. A drive motor 9 is installed at the rear of the platform 102. A front sprocket 10 is rotatably connected to the front end of the rectangular frame 3, and a rear sprocket 11 is connected to the rear end. A middle sprocket 12 is installed at the bottom of the rectangular frame 3, located below the rectangular frame 3 and connected to the rectangular frame 3 through a support. A reversing sprocket 13 is installed between the rear ends of the two guide rails 4. The front sprocket 10 and the middle sprocket 12... The axial directions of the rear sprocket 11 and the reversing sprocket 13 are both perpendicular to the telescopic direction of the telescopic frame 6. The rear end of the telescopic frame 6 is fixedly connected to one end of a traction chain 14. The traction chain 14 passes through the front sprocket 10, the middle sprocket 12, the rear sprocket 11, and the reversing sprocket 13 in sequence and then returns to the rear end of the telescopic frame 6 and is fixedly connected to the rear end of the telescopic frame 6 to form a closed loop. The middle sprocket 12 is coaxially connected to a driven wheel 15. The output shaft of the drive motor 9 is connected to a driving wheel 16. The driving wheel 16 is connected to the driven wheel 15 through a transmission, driving the driven wheel 15 and the middle sprocket 12 to rotate.

[0018] To avoid interference, the front sprocket 10, intermediate sprocket 12, rear sprocket 11, and reversing sprocket 13 are all located on the central axis of the telescopic frame 6. Additionally, a cavity is provided at the bottom of the telescopic frame 6 to accommodate the traction chain 14. To prevent the traction chain 14 from directly scraping against the first front idler roller 8, a reversing sprocket 13 can also be installed on the first front idler roller 8, allowing the traction chain 14 to bypass the reversing sprocket 13 on the first idler roller 8.

[0019] Of course, in practical applications, interference between the reversing chain 14 and the idler roller 8 can also be avoided by other structures. For example, two rows of idler rollers 8 can be set, and the two rows of idler rollers 8 can be set on both sides of the rectangular frame 3. The two rows of idler rollers 8 correspond one-to-one with the two sides of the telescopic frame 6. In this way, the reversing chain 13 located on the central axis of the telescopic frame 6 will not interfere with the idler roller 8.

[0020] In this embodiment, a drive motor 9 is used to extend or retract the telescopic frame 6 to improve the automation level of the liftable loading and unloading vehicle. When the operator is not on the platform, the telescopic frame 6 can automatically extend to the target position. The drive motor 9 can also maintain the extended or retracted state of the telescopic frame 6 to prevent the telescopic frame 6 from retracting or extending uncontrollably.

[0021] The limiting device 7 includes a front photoelectric sensor 701 located at the front of the two guide rails 4 and a rear photoelectric sensor 702 located at the rear of the two guide rails 4. The front photoelectric sensor 701 and the rear photoelectric sensor 702 are electrically connected to a controller 17. The controller 17 is electrically connected to the drive motor 9 and is used to control the drive motor 9. The controller 17 is connected to an input device 18 for the operator to send instructions to the controller 17.

[0022] To improve ease of use, this embodiment also includes a rechargeable power supply 19 on platform 102, which provides power to drive motor 9 and controller 17.

[0023] The scissor lift 1 has four wheels 104 at the four corners of its base 103, preferably lockable casters. A handrail 105 for pushing and pulling the scissor lift 1 is located on one side of the rear end of the rectangular frame 3. The drive mechanism 101 of the scissor lift 1 is an electric push rod 106, which is electrically connected to a rechargeable power supply 19 and a controller 17. Users can control the movement of the scissor lift 1 by pushing and pulling it via the handrail 105. The controller 17 can have an input device 18 mounted on the handrail 105.

[0024] To facilitate the pulling of the electric fan onto the telescopic frame 6, the front end of the telescopic frame 6 is wedge-shaped, with the inclined surface of the wedge-shaped front end of the telescopic frame 6 facing forward and upward.

[0025] In this embodiment, a counterweight area is provided at the end of the base 103 of the front-fork lifting vehicle 1 near the handrail 105. The user can set a counterweight in the counterweight area as needed to prevent the lifting and unloading vehicle from tilting forward when the telescopic frame 6 is tilted forward. During operation, the operator can pull the electric fan onto the telescopic frame 6 and further pull it to one end of the telescopic frame 6 close to the rectangular frame 3. During the pulling process, the front end of the telescopic frame 6 can be attached to the support of other equipment to form support, thereby eliminating the risk of the lifting and unloading vehicle tilting forward.

[0026] The working process of this utility model is as follows: Figures 1-3The illustrated lifting and unloading vehicle is designed for use in confined spaces. In operation, the user first pushes the vehicle to the side below the electric fan to be replaced and then locks the wheels 104. The scissor lift 1 is then raised, causing the platform 102 to rise. The operator can stand on the platforms 102 on either side of the rectangular frame 3, or use other leveling devices to reach the side of the electric fan to be removed. The operator controls the telescopic frame 6 to extend from the front end of the rectangular frame 3 towards the electric fan, ensuring the telescopic frame 6 is close to the fan and slightly lower than its height. After removing the fixing bolts of the electric fan from the platform 102, the operator pulls the fan onto the telescopic frame 6. The operator then retracts the telescopic frame 6, which pulls the electric fan back onto the rectangular frame 3. The operator then lowers the platform 102 of the scissor lift 1. After landing, the operator pushes the lifting and unloading vehicle to the warehouse, replaces the electric fan, and then reverses the process to reinstall the new electric fan in its original position. The entire disassembly and installation process greatly reduced the labor intensity of the operators and made the operation safer for them.

[0027] Two input devices 18 for operators to control the liftable loading and unloading vehicle can be provided, one on the platform 102 and the other on the handrail 105, so that operators on the platform 102 can control the liftable loading and unloading vehicle.

[0028] The above embodiments are merely illustrative of the principles and effects of the present invention, as well as some examples of its application, and are not intended to limit the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the inventive concept of the present invention, and these modifications and improvements are all within the scope of protection of the present invention.

Claims

1. A lifting loading and unloading vehicle for use in confined spaces, characterized in that, The system includes a scissor lift (1), the lifting mechanism (101) of the scissor lift (1) has a platform (102) on top, and a column (2) is vertically connected to each of the four corners of the platform (102). A rectangular frame (3) is connected to the top of the four columns (2). Two parallel "7"-shaped guide rails (4) are connected to the rectangular frame (3). The two guide rails (4) are respectively connected to one side of the two long sides of the rectangular frame (3) and extend along the long side of the rectangular frame (3). Each guide rail (4) and the upper surface of the rectangular frame (3) form a "["-shaped slot (5). The slots (5) formed by the two guide rails (4) are opposite to each other. A telescopic frame (6) is slidably arranged between the two guide rails (4). The telescopic frame (6) is slidably engaged in the two slots (5) on both sides. Both ends of the two guide rails (4) are provided with limiting devices (7) to limit the telescopic range of the telescopic frame (6).

2. The lifting and unloading vehicle according to claim 1, characterized in that, The rectangular frame (3) is connected between its two long sides by multiple rollers (8) arranged discretely along the extension direction of the guide rail (4). The rollers (8) are set perpendicular to the two guide rails (4). The upper edges of the multiple rollers (8) are on the same plane and located above the bottom surface of the slot (5). The telescopic frame (6) rests on the rollers (8) and is supported by the rollers (8) and slides along the slot (5) on the rollers (8).

3. The lifting and unloading vehicle according to claim 1, characterized in that, The rectangular frame (3) has a front end and a rear end along its length. The telescopic frame (6) can extend outward from the front end of the rectangular frame (3) beyond the two guide rails (4) to form an outward cantilever state. A drive motor (9) is provided at the rear of the platform (102). A front sprocket (10) is rotatably connected to the front end of the rectangular frame (3), and a rear sprocket (11) is connected to the rear end. A middle sprocket (12) is provided at the bottom of the rectangular frame (3). The middle sprocket (12) is located below the rectangular frame (3) and is connected to the rectangular frame (3) through a support. A reversing sprocket (13) is provided between the rear ends of the two guide rails (4). The front sprocket (10), the middle sprocket (12), and the rear sprocket (6) are connected to the rectangular frame (3) through a support. The axial directions of the sprocket (11) and the reversing sprocket (13) are perpendicular to the telescopic direction of the telescopic frame (6). The rear end of the telescopic frame (6) is fixedly connected to one end of a traction chain (14). The traction chain (14) passes through the front sprocket (10), the middle sprocket (12), the rear sprocket (11), and the reversing sprocket (13) in sequence and then returns to the rear end of the telescopic frame (6) and is fixedly connected to the rear end of the telescopic frame (6) to form a closed loop. The middle sprocket (12) is coaxially connected to a driven wheel (15). The output shaft of the drive motor (9) is connected to a driving wheel (16). The driving wheel (16) is connected to the driven wheel (15) in a transmission connection, driving the driven wheel (15) and the middle sprocket (12) to rotate.

4. The lifting and unloading vehicle according to claim 3, characterized in that, The limiting device (7) includes a front photoelectric sensor (701) located at the front of the two guide rails (4) and a rear photoelectric sensor (702) located at the rear of the two guide rails (4). The front photoelectric sensor (701) and the rear photoelectric sensor (702) are electrically connected to a controller (17), which is electrically connected to the drive motor (9) and used to control the drive motor (9). The controller (17) is connected to an input device (18) for the operator to send instructions to the controller (17).

5. The lifting and unloading vehicle according to claim 4, characterized in that, The platform (102) is also equipped with a rechargeable power supply (19), which is used to provide power to the drive motor (9) and the controller (17).

6. The lifting and unloading vehicle according to claim 5, characterized in that, The scissor lift (1) has wheels (104) at the four corners of the base (103) at the bottom. The scissor lift (1) has a handrail (105) for pushing and pulling the scissor lift (1) on one side of the rear end of the rectangular frame (3). The driver of the scissor lift (1) for driving the lifting mechanism (101) is an electric push rod (106), which is electrically connected to a rechargeable power supply (19) and a controller (17).

7. The lifting and unloading vehicle according to claim 3, characterized in that, The front end of the telescopic frame (6) is wedge-shaped, and the inclined surface of the wedge-shaped front end of the telescopic frame (6) faces forward and upward.

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