A dual platform elevator

Abstract

The utility model relates to the mechanical field among them, especially a double -deck elevator. The conventional elevator of existing mattress production can only remove a mattress each time, and the conveying efficiency is low, and the production needs cannot be satisfied, therefore the utility model provides a double -deck elevator, including frame, elevating gear and the support platform of putting mattress, elevating gear can drive support platform to make the lifting movement on the frame and match the conveying platform of corresponding height, and the frame is equipped with two support platforms adjacent up and down, two support platforms are connected with elevating gear and can make synchronous lifting under the drive of it, makes two support platforms alternate alignment conveying platform. Through the synchronous lifting of two support platforms stacked up and down, the alternate alignment conveying platform is matched with the mattress removal, and the removal efficiency is improved, and the mattress production needs are satisfied.

Description

Technical Field

[0001] This utility model relates to hoists in the field of machinery, and in particular to a double-platform hoist. Background Technology

[0002] While traditional elevators are less efficient than continuous elevators, they require less space. In many situations with limited height, continuous elevators cannot be installed, thus traditional elevators remain in demand in low-height applications. In mattress production, elevators are frequently used to transfer mattresses between conveyor platforms of varying heights. However, existing traditional elevators have low conveying efficiency, transferring only one mattress at a time, which is insufficient to meet the needs of efficient and rapid transfer of large batches of mattresses during production. Utility Model Content

[0003] To address the technical problem that traditional lifting machines used in existing mattress production can only transport one mattress at a time, resulting in low conveying efficiency and failing to meet production needs, this utility model provides a dual-platform lifting machine. By synchronously raising and lowering two stacked support platforms, which alternately align with the conveying platform to transport mattresses, the conveying efficiency is improved, meeting the needs of mattress production. The upper and lower support platforms make full use of the gap between the conveying platform and the ground. When the higher support platform aligns with the conveying platform, the lower support platform still has enough space to be placed below the higher support platform.

[0004] The technical solution adopted by this utility model to solve the technical problem is as follows: A dual-platform lifting machine includes a frame, a lifting device, and a support platform for placing mattresses. The lifting device can drive the support platform to move up and down on the frame to match the corresponding height of the conveyor platform. The key feature is that the frame has two adjacent support platforms, both connected to the lifting device and capable of synchronously rising and falling under its influence, so that the two support platforms alternately align with the conveyor platform. This utility model uses the synchronous rising and falling of two adjacent support platforms to move mattresses back and forth between two conveyor platforms at high and low positions. For the same conveyor platform, as long as there is sufficient clearance between the lowest conveyor platform and the ground, there is still space for the other support platform to be installed when the upper support platform aligns with it. The two support platforms alternately align with the conveyor platform to move mattresses, allowing the conveyor platform to quickly send out or receive two mattresses, improving the lifting machine's transfer efficiency and meeting the need for efficient mattress transfer between different workstations.

[0005] As a further improvement and supplement to the above technical solution, this utility model adopts the following technical measures: The lifting device is a pulley lifting mechanism, which includes a drive motor, a linkage device, and multiple lifting units located on both sides of the frame and connected to both sides of the two support platforms. Each lifting unit includes a matching transmission belt and a transmission pulley. One side of the transmission belt connects to the edge of the two support platforms from top to bottom. The drive motor drives the transmission pulleys of each lifting unit to rotate synchronously through the linkage device, so that the transmission belts of each lifting unit pull the two support platforms to lift synchronously. The lifting device uses a combination of a drive motor, a linkage device, and multiple lifting units to achieve synchronous lifting of the two support platforms, thereby alternately aligning the conveyor platforms. During operation, the drive motor drives the transmission pulleys of each lifting unit synchronously through the linkage device, which in turn causes all the transmission belts to pull the two support platforms to lift synchronously, aligning the conveyor platforms of different heights. The transmission belt and transmission pulley can be a matching belt and pulley, or a chain and sprocket.

[0006] The lifting units consist of four units arranged in pairs. Two groups of lifting units are positioned on the frame along the conveyor platform's transport direction, with the two units in each group located on opposite sides of the frame. The linkage device includes two parallel shafts at the same height, rotatably connected to the frame. Four drive pulleys from each of the two lifting units are located at the ends of the two shafts, with the drive pulleys of the two lifting units in each group located at opposite ends of the same shaft. The two shafts are synchronized via a belt drive pair, and one of the shafts is connected to a drive motor. By having a total of four lifting units on both sides of the frame, two lifting units are matched to each side of each support platform, and two drive belts are connected to each side of each support platform. Each support platform is smoothly lifted and lowered by the traction of the four conveyor belts. Each shaft has two drive pulleys belonging to the same lifting unit at both ends, and the two shafts are synchronized via a belt drive pair. Either shaft is connected to a drive motor for power input. When the drive motor stops, both shafts and all four lifting units also stop working, and the two support platforms alternately align with the conveyor platform.

[0007] The belt drive pair is either a belt drive pair or a chain drive pair. One of the two rotating shafts is connected to the drive motor via the belt drive pair or chain drive pair. The two rotating shafts maintain stable synchronous rotation through the belt drive pair or chain drive pair. The drive motor also outputs power through the belt drive pair or chain drive pair to drive one of the rotating shafts, thereby driving both rotating shafts.

[0008] Each of the two support platforms and the conveying platform is equipped with an identical transfer mechanism, which allows the mattress to be sent out of or received by the conveying platform. By setting up a transfer mechanism between the support platform and the conveying platform, the mattress can be transferred between the support platform and the conveying platform as needed. The mattress can be transferred from the conveying platform to the support platform, or from the support platform to the conveying platform.

[0009] The transfer mechanism includes a conveyor motor, a meshable drive gear, and a driven gear. The drive gear is located on one side of the conveyor platform, and the driven gear is located on one side of the support platform. Both support platforms have driven gears, and each support platform has a driven roller coaxially fixed to the driven gear. The conveyor motor is mounted on the frame or conveyor platform and is connected to the drive gear for transmission. The driving force of the transfer mechanism comes from one side of the conveyor platform. The driven gears of the two support platforms can alternately mesh with the drive gear on the conveyor platform, realizing the transfer of the mattress between the support platform and the conveyor platform. Placing the driven gear on the support platform side simplifies the structure, while the heavy conveyor motor and drive gear are located on the conveyor platform or frame. The conveyor motor drives the drive gear to rotate, which in turn drives the driven gear meshing with the drive gear to rotate as well. The driven roller rotates with the driven gear, transferring the mattress from the conveyor platform to the support platform. Whenever the conveyor motor rotates in a different direction, the driven roller rotates in the same direction, transferring the mattress from the support platform to the conveyor platform.

[0010] The drive gear and the transmission motor are mounted on a movable frame, which is movably mounted on the transmission platform or frame. When the support platform is stopped and aligned with the transmission platform, the movable frame moves forward to engage the drive gear with the driven gear for the transfer operation. After the transfer operation is completed, the movable frame moves backward to disengage the drive gear. By driving the drive gear to move back and forth through the movable frame, it is possible to controllably bring the drive gear closer to the driven gear for engagement or disengagement. The purpose of this control is to prevent the drive gear and driven gear from not fully engaging before the support platform is aligned with the transmission platform, thus avoiding affecting gear engagement efficiency and service life, and even damaging the gear.

[0011] The movable frame is mounted on the conveying platform or frame via a telescopic cylinder, with the piston rod of the telescopic cylinder connected to the movable frame. During operation, the piston rod extends and retracts relative to the cylinder body, causing the movable frame to move back and forth, thus engaging or disengaging the driving gear and driven gear.

[0012] A detection device is installed between each of the two support platforms and the conveyor platform. The detection device is connected to a controller, which in turn is connected to a telescopic cylinder, a conveyor motor, and a drive motor. When the support platforms align with the conveyor platform, the detection device sends a signal to the controller, which then stops the drive motor and starts the telescopic cylinder and the conveyor motor. The detection device allows for precise positioning of the current height of the support platforms, used to determine whether they are aligned with the conveyor platform, thus improving the operational safety of the platform hoist. When the two platforms are aligned, the detection device sends a signal to the controller, which stops the drive motor to de-energize the support platforms. Simultaneously, it starts the telescopic cylinder and the conveyor motor, with the telescopic cylinder starting first and then the conveyor motor. During operation, the telescopic cylinder starts first, engaging the drive gear and driven gear, followed by the drive motor, which then drives the gear pair. After operation, the drive motor stops first, and then the telescopic cylinder starts again, disengaging the drive gear and driven gear.

[0013] The detection device includes a matching laser switch and a detection plate. The laser switch is located on one side of the conveyor platform, and the detection plate is located on the other side of the support platform. The laser detection device accurately positions the height of the support platform to correctly determine whether the support platform and the conveyor platform are aligned. During operation, the laser emitted by the laser switch is reflected by the detection plate and re-measured, indicating that the support platform is aligned with the conveyor platform. If the detection plate and the laser emitting switch are not at the same horizontal height, the laser switch cannot detect the laser reflected by the detection plate, indicating that the support platform is not aligned with the conveyor platform. In this case, the telescopic cylinder will not operate and will not push the conveyor motor and drive gear forward.

[0014] The beneficial technical effects of this utility model are as follows: By synchronously raising and lowering two stacked support platforms, the mattress is alternately aligned with and transported to conveyor platforms of different heights, thereby improving mattress transport efficiency and effectively shortening the waiting time between the two processes, meeting the needs of efficient mattress production and assembly. Furthermore, each support platform is stably raised and lowered by the synchronous linkage of four sets of common transmission belts distributed on both sides. At the same time, high-precision laser detection is used to determine the alignment status between the support platform and the conveyor platform. After the support platform and the conveyor platform are aligned, a movable transfer structure is used to actively propel the mattress between the support platform and the conveyor platform, further improving mattress transfer efficiency. Attached Figure Description

[0015] Figure 1 : A schematic diagram of the structure of this utility model.

[0016] Figure 2 : A schematic diagram of the cooperation between the support platform and the conveyor belt described in this utility model.

[0017] Figure 3 : Figure 2 Enlarged view of part A.

[0018] In the diagram: 1. Frame, 2. Support platform, 3. Conveyor platform, 4. Drive motor, 5. Transmission belt, 6. Transmission pulley, 7. Shaft, 8. Transmission motor, 9. Drive gear, 10. Driven gear, 11. Movable frame, 12. Telescopic cylinder, 13. Piston rod, 14. Laser switch, 15. Detection plate, 16. Controller, 17. Counterweight, 18. Synchronous belt, 19. Synchronous pulley, 20. Mattress. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0020] like Figures 1-3 As shown, this utility model is a double-platform lifting machine, including a frame, a lifting device, and a support platform 2 for placing mattresses. The lifting device can drive the support platform 2 to move up and down on the frame to match the corresponding height of the conveyor platform 3. The frame has two adjacent support platforms 2, both of which are connected to the lifting device and can move up and down synchronously under its drive, so that the two support platforms 2 alternately align with the conveyor platform 3. The lifting device is a pulley lifting mechanism, which includes a drive motor 4, a linkage device, and multiple lifting units located on both sides of the frame and connected to both sides of the two support platforms 2. Each lifting unit includes a transmission belt 5 and a transmission pulley 6. One side of the transmission belt 5 connects to the edge of the two support platforms 2 from top to bottom. The drive motor 4 drives the transmission pulley 6 of each lifting unit to rotate synchronously through the linkage device, so that the transmission belt 5 of each lifting unit pulls the two support platforms 2 to move up and down synchronously.

[0021] As shown in the figure, there are four lifting units arranged in pairs. Two sets of lifting units are mounted on the frame along the conveying direction of the conveyor platform 3, with the two lifting units in the same group positioned on opposite sides of the frame. The linkage device includes two parallel and rotatably connected shafts 7 at the same height to the frame. The four drive pulleys 6 of the two sets of lifting units are located at the ends of the two shafts 7, and the drive pulleys 6 of the two lifting units in the same group are located at opposite ends of the same shaft 7. The two shafts 7 are synchronized via a belt drive pair, and one of the two shafts 7 is connected to a drive motor 4. The belt drive pair can be a belt drive pair or a chain drive pair. One of the two shafts 7 is connected to the drive motor 4 via a belt drive pair or a chain drive pair. In this embodiment, a belt drive pair is preferred, and one of the two shafts is connected to the drive motor via a belt drive pair.

[0022] To reduce the workload of the motor, such as Figure 1 In the embodiment shown, the transmission belt 5 is connected to the counterweight 17 at the end away from the two support platforms 2, and the other end of the transmission belt is connected to the two support platforms 2. The four transmission belts 5 in the figure are divided into two groups, and the two transmission belts 5 on the same side form a group and are connected to a common counterweight 17.

[0023] To facilitate the docking of the upper support platform with the lower conveyor platform, the drive belt connecting the two support platforms can have extra space for a flexible fold. After the lower support platform descends to the bottom, the upper support platform can continue to descend with the drive belt. At this time, the flexible drive belt folds to bring the upper support platform closer to the lower support platform. This structure is suitable for situations where the lower conveyor platform is relatively close to the ground. When the two support platforms need to rise to dock with the higher conveyor platform, the flexible drive belt straightens and tightens, causing the upper and lower support platforms to rise sequentially.

[0024] In operation, this invention features two adjacent support platforms that move up and down synchronously, transferring mattresses between two conveyor platforms at different heights. For the same conveyor platform, as long as there is sufficient clearance between the lowest conveyor platform and the ground, there is still space available for the other support platform at the lower height when the upper support platform aligns with it. By alternating alignment of the two support platforms, the conveyor platforms can quickly send out or receive two mattresses, improving the efficiency of the lifting machine and meeting the need for efficient mattress transfer between different workstations.

[0025] Furthermore, identical transfer mechanisms are provided between the two support platforms 2 and the transfer platform 3, allowing the mattress 20 to be sent out of or received on the transfer platform 3. For example... Figure 3As shown, the transfer mechanism includes a conveyor motor 8, a meshable drive gear 9, and a driven gear 10. The drive gear 9 is located on one side adjacent to the conveyor platform 3, and the driven gear 10 is located on one side of the support platform, with both support platforms equipped with driven gears 10. Both support platforms are equipped with driven rollers that are driven and connected to the driven gears. The conveyor motor 8 is mounted on the frame or conveyor platform 3 and is driven and connected to the drive gear 9. The drive gear 9 and the conveyor motor 8 are mounted on a movable frame 11. The movable frame 11 is movably mounted on the conveyor platform 3 or the frame. When the support platform 2 is stopped and aligned with the conveyor platform 3, the movable frame 11 moves forward to engage the drive gear 9 with the driven gear 10 for transfer operations. After the transfer operations are completed, the movable frame 11 moves backward to disengage the drive gear 9. The movable frame 11 is mounted on the conveyor platform 3 or the frame by the push and pull of a telescopic cylinder 12, and the piston rod 13 of the telescopic cylinder 12 is connected to the movable frame 11. A detection device is installed between each of the two support platforms 2 and the conveyor platform 3. The detection device is connected to a controller 16, which in turn is connected to a telescopic cylinder 12, a conveyor motor 8, and a drive motor 4. When the support platform 2 aligns with the conveyor platform 3, the detection device sends a signal to the controller 16, which then activates the telescopic cylinder 12 and the conveyor motor 8. The specific detection device includes a matching laser switch 14 and a detection plate 15. The laser switch 14 is located on one side of the conveyor platform 3, and the detection plate 15 is located on one side of the support platform 2. To ensure smooth movement of the movable frame, a matching slide rail can be installed on the conveyor platform or frame to limit and guide the movement of the movable frame. Simultaneously, the driving gear and the driven gear are slightly misaligned, so that the centers of the two gears are not on the same vertical plane, making it easier for the driving gear to mesh with the driven gear when it approaches.

[0026] During operation, when the detection device detects that the two platforms are aligned, it sends a signal to the controller. The controller stops the drive motor to stop the support platform and simultaneously activates the telescopic cylinder and the conveyor motor. The telescopic cylinder starts first, extending its piston rod to push the movable frame forward, engaging the drive gear and driven gear. Then, the conveyor motor starts, driving the drive gear to rotate, which in turn drives the driven gear meshing with it. The driven roller rotates with the driven gear, moving the mattress from the conveyor platform to the support platform. Whenever the conveyor motor reverses its direction, the driven roller also reverses its direction, moving the mattress from the support platform to the conveyor platform. After the conveying operation is completed, the drive motor stops first, then the telescopic cylinder starts again, retracting its piston rod and pulling the movable frame backward, disengaging the drive gear and driven gear.

Claims

1. A dual-platform hoist, comprising a frame, a lifting device, and a support platform (2) for placing mattresses, wherein the lifting device can drive the support platform (2) to move up and down on the frame to match a corresponding height conveying platform (3), characterized in that: The frame is provided with two adjacent support platforms (2), both of which are connected to the lifting device and can be lifted and lowered synchronously under its drive, so that the two support platforms (2) alternately align with the conveying platform (3).

2. The dual-platform hoist according to claim 1, characterized in that: The lifting device is a pulley lifting mechanism, which includes a drive motor (4), a linkage device, and multiple lifting units located on both sides of the frame and connected to both sides of the two support platforms (2). Each lifting unit includes a transmission belt (5) and a transmission pulley (6). One side of the transmission belt (5) is connected to the edge of the two support platforms (2) from top to bottom. The drive motor (4) drives the transmission pulley (6) of each lifting unit to rotate synchronously through the linkage device, so that the transmission belt (5) of each lifting unit pulls the two support platforms (2) to lift synchronously.

3. The dual-platform hoist according to claim 2, characterized in that: The lifting unit consists of four units arranged in pairs. The two sets of lifting units are located on the frame along the conveying direction of the conveying platform (3). The two lifting units in the same group are located on opposite sides of the frame. The linkage device includes two rotating shafts (7) that are parallel and rotatably connected to the frame at the same height. The four transmission pulleys (6) of the two sets of lifting units are located at the ends of the two rotating shafts (7). The transmission pulleys (6) of the two lifting units in the same group are located at both ends of the same rotating shaft (7). The two rotating shafts (7) are synchronized through a belt drive pair. One of the two rotating shafts (7) is connected to the drive motor (4).

4. The dual-platform hoist according to claim 3, characterized in that: The belt drive pair is a belt drive pair or a chain drive pair, and one of the two rotating shafts (7) is connected to the drive motor (4) through the belt drive pair or the chain drive pair.

5. The dual-platform hoist according to claim 1, characterized in that: The two support platforms (2) and the conveying platform (3) are each provided with a transfer mechanism with the same structure. The transfer mechanism can send the mattress out of the conveying platform (3) or receive it on the conveying platform (3).

6. The dual-platform hoist according to claim 5, characterized in that: The transfer mechanism includes a transfer motor (8), a meshable drive gear (9), and a driven gear (10). The drive gear (9) is located on one side of the transfer platform (3), and the driven gear (10) is located on one side of the support platform. Both support platforms are equipped with driven gears (10). Both support platforms are equipped with driven rollers that are connected to the driven gears. The transfer motor (8) is located on the frame or the transfer platform (3) and is connected to the drive gear (9).

7. The dual-platform hoist according to claim 6, characterized in that: The drive gear (9) and the transmission motor (8) are mounted on a movable frame (11). The movable frame (11) is movably mounted on the transmission platform (3) or the frame. When the support platform (2) stops and aligns with the transmission platform (3), the movable frame (11) moves forward to make the drive gear (9) mesh with the driven gear (10) to perform the transfer operation. After the transfer operation is completed, the movable frame (11) moves backward to make the drive gear (9) disengage and disengage.

8. The dual-platform hoist according to claim 7, characterized in that: The movable frame (11) is mounted on the conveying platform (3) or frame by the push and pull movement of the telescopic cylinder (12), and the piston rod (13) of the telescopic cylinder (12) is connected to the movable frame (11).

9. The dual-platform hoist according to claim 8, characterized in that: A detection device is provided between the two support platforms (2) and the conveying platform (3). The detection device is connected to the controller (16). The controller (16) is connected to the telescopic cylinder (12), the conveying motor (8), and the drive motor (4). When the support platform (2) is aligned with the conveying platform (3), the detection device sends a signal to the controller (16), and the controller (16) starts the telescopic cylinder (12) and the conveying motor.

10. The dual-platform hoist according to claim 9, characterized in that: The detection device includes a matching laser switch (14) and a detection plate (15). The laser switch (14) is located on one side of the conveying platform (3), and the detection plate (15) is located on one side of the support platform (2).

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