A topless elevator

Abstract

The utility model relates to the technical field of elevator, concretely relates to a topless elevator. Its include support base, support base top end is installed with frame body, frame body designs as perpendicular rectangle structure, frame body includes a plurality of longitudinal columns and a plurality of layers of crossbeam, a plurality of longitudinal columns and a plurality of layers of crossbeam are connected through bolt and constitute gridlike framework, and top is completely open, forms high -strength support system, and drive assembly is provided at support base top, and is located frame body inside bottom end. The utility model provides very high bending -resistant, torsional strength and rigidity through by a plurality of longitudinal columns and a plurality of layers of crossbeam bolt connection and form gridlike framework, and the design of top completely open allows goods to go in and out lift platform from top without barrier, greatly improves the loading and unloading efficiency and flexibility.

Description

Technical Field

[0001] This utility model relates to the field of hoisting technology, and more specifically, to an overhead hoist. Background Technology

[0002] A hoist is a large mechanical device that transports goods by changing their potential energy, such as a mine hoist or a dam hoist. In a broader sense, elevators, overhead cranes, winches, trolleys, cranes, and gate hoists can all be called hoists. Hoists generally refer to large mechanical devices with high power and strong lifting capacity. They complete the transportation process by using power machinery to drive the transported goods up and down. Traditional hoists typically employ a closed structure with the drive components located at the top, hindering the entry and exit of ultra-tall, large, or top-lifted goods. The height of the goods is limited by the shaft space, and the reliance on side doors for loading and unloading results in low efficiency and poor operational flexibility. The closed top structure obstructs the view, and maintenance requires disassembling the casing or working at height, increasing maintenance difficulty and time. In view of this, we propose a topless hoist. Utility Model Content

[0003] This utility model addresses the technical problems existing in the prior art by providing an open-top hoist. It solves the problems of traditional hoists, which generally adopt a closed structure and place the drive components at the top, which hinders the entry and exit of ultra-tall, large or top-lifted goods. The height of the goods is limited by the hoistway space, the reliance on the side door for loading and unloading is inefficient, the operation is inflexible, the closed structure at the top obstructs the view, and maintenance requires disassembling the casing or climbing to work, which increases the difficulty and time of maintenance.

[0004] To achieve the above objectives, this utility model provides an open-top hoist, including a support base. A frame body is installed on the top of the support base. The frame body is designed as a vertical rectangular structure. The frame body includes several longitudinal columns and several layers of horizontal beams. The longitudinal columns and horizontal beams are connected by bolts to form a grid-like skeleton, and the top is completely open to form a high-strength support system. A drive assembly is provided above the support base and is located at the bottom of the frame body.

[0005] The beneficial effects of this utility model are: The frame, consisting of multiple longitudinal columns and several layers of crossbeams bolted together to form a grid-like structure, provides extremely high bending and torsional strength and rigidity. The fully open top design allows goods (especially those that are tall, irregularly shaped, or require top lifting / operation) to enter and exit the lifting platform without obstruction from the top, greatly improving loading and unloading efficiency and flexibility, and avoiding the limitations of traditional enclosed shafts or top-mounted frames. The drive assembly is installed above the support base, located at the bottom of the frame body. This position facilitates maintenance and effectively utilizes the bottom space, while avoiding the space occupation problem of traditionally installing the drive assembly at the top of the equipment.

[0006] Based on the above technical solution, the present invention can be further improved as follows.

[0007] As a further improvement to this technical solution, a support frame is provided inside the frame body, the support frame is located above the drive assembly, and a lifting platform is installed at the top of the support frame. The lifting platform is composed of several rollers. Slider blocks are installed on both opposite side walls of the support frame, and a guide rail is installed at the center of the top side wall of the frame body. The sliders slide in cooperation with the guide rail.

[0008] The beneficial effects of adopting the above-mentioned further solution are that the slider is installed on the opposite side walls of the support frame and cooperates with the guide rail installed on the frame body to precisely guide the support frame (and lifting platform) to perform strict vertical movement, preventing shaking and jamming; the design of the roller makes it easy for goods (especially wheeled or heavy objects that need to be moved) to move horizontally on the platform (push in / pull out), greatly reducing the friction when loading and unloading goods.

[0009] As a further improvement to this technical solution, mounting boxes are installed at the four corners of the top of the frame body, and a drive chain is installed between the inside of the mounting box and the drive assembly via a sprocket; mounting seats are installed on opposite side walls of the support frame, and a mating shaft runs through the surface of the mounting seat, with the bottom end of the drive chain contacting the bottom end of the mating shaft; drive drums are symmetrically installed on opposite side walls of the top of the frame body, and the same structure is symmetrically installed on the bottom of the frame body, wherein a steel wire rope is installed between the drive drum at the top and the drive drum at the bottom; connecting seats are installed on the lower surface of the top of opposite side walls of the support frame, and limit blocks are installed on the side walls of the connecting seats, with the steel wire rope disposed inside the limit blocks and slidably connected to them.

[0010] The beneficial effects of adopting the above-mentioned further solution are as follows: the mounting box accommodates the top sprocket, protects the chain meshing area, provides lubrication points, and also acts as a protective cover for the chain. The chain drive provides a direct, rigid upward thrust, ensuring reliable transmission and strong load-bearing capacity. The wire rope passes through the interior of the limiting block, which allows the wire rope to slide smoothly while restricting its lateral displacement, ensuring that the wire rope is always in the correct position to transmit tension, providing tension-assisted lifting, and achieving excellent balance and anti-sway function through symmetrical arrangement and limiting blocks. The combination of these two aspects ensures both strong lifting force and stable and level operation. The symmetrical arrangement of the wire rope helps maintain the level of the support frame during lifting, preventing tilting or swaying caused by uneven load or slight asynchrony in the chain drive. The limiting blocks ensure the correct wire rope path, preventing derailment or entanglement.

[0011] As a further improvement to this technical solution, mounting rings are installed at the four corners of the top of the frame body, and fixing seats are installed at the four corners of the bottom of the support base. The fixing seats are fixed to the ground through screw holes.

[0012] The beneficial effects of adopting the above-mentioned further solution are that the mounting rings at the four corners of the frame body are used for hoisting or transporting equipment, and the fixing seats at the four corners of the bottom of the support base fix the equipment to the ground through screw holes, ensuring stability, providing reliable ground anchoring, and preventing overturning.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: This open-top hoist utilizes a grid-like frame formed by bolted connections of multiple longitudinal columns and several layers of crossbeams, providing extremely high bending and torsional strength and rigidity. The completely open top design allows goods (especially those that are tall, irregularly shaped, or require top lifting / operation) to enter and exit the lifting platform without obstruction, greatly improving loading and unloading efficiency and flexibility. It avoids the limitations of traditional enclosed shafts or top-mounted frames, and the open-top design saves top space, making it particularly suitable for situations where factory height is limited or where there is overhead equipment (such as overhead cranes or pipelines) that needs to be avoided. The drive assembly is installed above the support base, at the bottom of the frame body. This location facilitates maintenance and effectively utilizes the bottom space, while avoiding the space occupation problem of traditionally installing the drive assembly at the top of the equipment. Chain drive provides direct, rigid upward thrust, ensuring reliable transmission and strong load-bearing capacity. Wire rope winch provides tension assistance for lifting, and excellent balance and anti-sway function are achieved through symmetrical arrangement and limit blocks. The combination of the two ensures both strong lifting force and high operational stability and levelness. Attached Figure Description

[0014] Figure 1 This is a three-dimensional schematic diagram of the overall structure of this utility model; Figure 2 For the present utility model Figure 1 Schematic diagram of the structure at point A; Figure 3 This is a schematic plan view of the overall structure of this utility model; Figure 4 This is a partial structural schematic diagram of the present invention; Figure 5 For the present utility model Figure 4 A schematic diagram of the structure at point B.

[0015] The meanings of the labels in the diagram are as follows: 1. Frame body; 2. Support base; 10. Longitudinal column; 11. Crossbeam; 20. Drive assembly; 3. Support frame; 30. Lifting platform; 12. Mounting box; 201. Drive chain; 31. Slider; 15. Guide rail; 33. Mounting seat; 330. Mating shaft; 13. Drive drum; 130. Wire rope; 32. Connecting seat; 320. Limiting block; 14. Mounting ring; 21. Fixing seat. Detailed Implementation

[0016] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0017] Please see Figures 1-5 As shown, this embodiment provides an open-top hoist, including a support base 2, with a frame body 1 installed at the top of the support base 2. The frame body 1 is designed as a vertical rectangular structure and includes several longitudinal columns 10 and several layers of horizontal beams 11. The several longitudinal columns 10 and several layers of horizontal beams 11 are connected by bolts to form a grid-like skeleton, and the top is completely open to form a high-strength support system. A drive assembly 20 is provided above the support base 2 and is located at the bottom of the frame body 1.

[0018] The improvement in this embodiment is as follows: The frame is made up of multiple longitudinal columns 10 and several layers of crossbeams 11 connected by bolts to form a grid-like skeleton, which provides extremely high bending and torsional strength and rigidity. The fully open top design allows goods to enter and exit the lifting platform 30 from the top without obstruction, which greatly improves loading and unloading efficiency and flexibility, and avoids the limitations of traditional enclosed shafts or top frames. The drive assembly 20 is installed above the support base 2 and located at the bottom of the frame body 1. This position is convenient for maintenance and can effectively utilize the bottom space, while avoiding the problem of increasing space occupation caused by installing the drive assembly 20 at the top of the equipment in the traditional way.

[0019] To facilitate the lifting of aluminum profiles, a support frame 3 is installed inside the frame body 1, positioned above the drive assembly 20. A lifting platform 30, composed of several rollers, is mounted on the top of the support frame 3. Slider blocks 31 are installed on both sides of the support frame 3, and a guide rail 15 is installed at the center of the top side wall of the frame body 1, with the sliders 31 slidingly engaging with the guide rail 15. Mounting boxes 12 are installed at the four corners of the top of the frame body 1, and a drive chain 201 is connected to the drive assembly 20 via sprockets inside the mounting boxes 12. The support frame 3 has sliding blocks on both sides of the support frame 3. Each is equipped with a mounting base 33, and a mating shaft 330 passes through the surface of the mounting base 33. The bottom end of the drive chain 201 contacts the bottom end of the mating shaft 330. The top of the frame body 1 is symmetrically equipped with drive drums 13 on both sides of the top, and the bottom of the frame body 1 is symmetrically equipped with the same structure. A wire rope 130 is installed between the drive drums 13 at the top and the drive drums 13 at the bottom. The support frame 3 is equipped with a connecting seat 32 on the lower surface of the top of both sides of the top. A limit block 320 is installed on the side wall of the connecting seat 32. The wire rope 130 is set inside the limit block 320 and is slidably connected to it. The drive assembly 20 is the power source of the hoist, typically including a motor, reducer, and brake. The support frame 3 is the direct load-bearing structure of the lifting platform 30, and it moves vertically up and down under the drive assembly 20. When the drive assembly 20 drives the bottom sprocket to rotate, the chain begins to circulate. The upward-moving part of the chain contacts the bottom of the mating shafts 330 on both sides of the support frame 3 and pushes it upward, thereby transmitting power to the support frame 3 and causing it to rise. The downward-moving part of the chain is in a slack or return state. When the top drive drum 13 winds up the wire rope 130, it pulls the support frame 3 upward through the connecting seat 32, assisting the chain in lifting (or sharing part of the load). When the drive drum 13 releases the wire rope 130, the support frame 3 descends under gravity or chain drive. The wire rope 130 always bears tension.

[0020] In addition, mounting rings 14 are installed at the four corners of the top of the frame body 1, and fixing seats 21 are installed at the four corners of the bottom of the support base 2. The fixing seats 21 are fixed to the ground through screw holes, and the mounting rings 14 are installed at the four corners of the top of the frame body 1. They are usually used for lifting and installing the entire hoist frame, or for fixing safety ropes during maintenance, etc. The fixing seats 21 are fixed to the ground through screw holes.

[0021] In practical use, when lifting goods, the operator starts the drive assembly 20, which drives the bottom sprocket on its output shaft to rotate. The bottom sprocket drives the drive chain 201 to start moving. The chain circulates between the top and bottom sprockets inside the mounting box 12. The upward movement of the bottom end of the chain contacts the bottom end of the mating shaft 330 on the mounting seats 33 on both sides of the support frame 3, generating an upward thrust. At the same time, the drive drum 13 at the top of the frame body 1 begins to synchronously wind up the wire rope 130. The tightened wire rope 130 pulls the top of the support frame 3 upward through the connecting seat 32. Under the combined action of the upward thrust of the chain and the upward pull of the wire rope 130, the support frame 3 overcomes gravity and begins to rise steadily. The slider 31 on the side wall of the support frame 3 slides vertically upward along the guide rail 15 on the frame body 1. To ensure precise and stable movement, the wire rope 130 slides smoothly within the limiting block 320 of the connecting seat 32, maintaining the correct position. The lifting platform 30 rises together with the support frame 3, and the load is lifted vertically. When the platform reaches the target height, the drive assembly 20 and the top drive drum 13 stop operating. Because the top is open, goods can be lifted directly into or out of the lifting platform 30 from the top by crane, forklift, or other means. Using the rollers on the platform, workers can easily push wheeled goods (such as pallet trucks full of materials) onto the platform or push goods from the platform to adjacent floors or equipment. To lower the cargo, the operator reverses the drive assembly 20, causing the bottom sprocket to rotate in the opposite direction. This causes the top section of the drive chain 201 to move downwards, at which point the mating shaft 330 loses its upward thrust. Under the weight of the cargo and platform, the support frame 3 tends to descend. Simultaneously, the drive drum 13 at the top of the frame body 1 begins to release (controlled release) the wire rope 130. The support frame 3 (along with the platform and cargo) begins to descend under gravity. The downward section of the chain follows the mating shaft 330 downwards. The descent speed is regulated by the regenerative braking or mechanical brake of the drive assembly 20 and the release control of the drive drum 13 to ensure a smooth and uniform descent. The slider 31 slides vertically downwards along the guide rail 15 to maintain precise guidance. The wire rope 130 slides within the limit block 320 to maintain balance and prevent swaying. When the platform reaches the bottom (or the target low position), the drive stops, the brakes activate, and the platform comes to a stable stop.

[0022] 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 preferred examples and are not intended to limit the 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 topless hoist, comprising a support base (2), characterized in that: The support base (2) is equipped with a frame body (1) at the top. The frame body (1) is designed as a vertical rectangular structure. The frame body (1) includes several longitudinal columns (10) and several layers of horizontal beams (11). The several longitudinal columns (10) and several layers of horizontal beams (11) are connected by bolts to form a grid-like skeleton. The top is completely open to form a high-strength support system. A drive component (20) is provided above the support base (2) and is located at the bottom inside the frame body (1).

2. The overhead hoist according to claim 1, characterized in that: The frame body (1) is provided with a support frame (3) inside. The support frame (3) is located above the drive assembly (20). A lifting platform (30) is installed at the top of the support frame (3). The lifting platform (30) is composed of several rollers.

3. The overhead hoist according to claim 2, characterized in that: The frame body (1) has four corners at the top of the frame body (1) and a drive chain (201) is installed between the inside of the installation box (12) and the drive assembly (20) via a sprocket.

4. The overhead hoist according to claim 2, characterized in that: The support frame (3) has sliders (31) installed on both sides of the support frame (3), and a guide rail (15) is installed at the center of the top side wall of the frame body (1). The sliders (31) and the guide rail (15) slide together.

5. The overhead hoist according to claim 3, characterized in that: The support frame (3) has mounting seats (33) installed on both sides of the support frame (3). A mating shaft (330) runs through the surface of the mounting seat (33). The bottom end of the drive chain (201) is in contact with the bottom end of the mating shaft (330).

6. The overhead hoist according to claim 2, characterized in that: The top of the frame body (1) is symmetrically equipped with drive drums (13) on both sides. The bottom of the frame body (1) is symmetrically equipped with the same structure. A wire rope (130) is installed between the drive drum (13) at the top and the drive drum (13) at the bottom. A connecting seat (32) is installed on the lower surface of the top of both sides of the support frame (3). A limit block (320) is installed on the side wall of the connecting seat (32). The wire rope (130) is located inside the limit block (320) and is slidably connected to it.

7. The overhead hoist according to claim 1, characterized in that: Mounting rings (14) are installed at the four corners of the top of the frame body (1), and fixing seats (21) are installed at the four corners of the bottom of the support base (2). The fixing seats (21) are fixed to the ground through screw holes.

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