Elevator with platform locking mechanism

Abstract

The utility model discloses a hoist with platform locking mechanism, including frame, lifting platform, platform locking mechanism, the frame includes several stand, and is equipped with several crossbeam between two stands, through setting up the platform locking mechanism of mutual fixation between lifting platform and crossbeam, make lifting platform move to the height of the position of crossbeam, through the mutual fixation of platform locking mechanism and crossbeam to avoid the subsidence or rebound phenomenon of lifting platform in the background technology in this height, make lifting platform can be more accurate after loading or unloading and stop in the predetermined height.

Description

Technical Field

[0001] This utility model relates to the field of warehousing, specifically to a hoist. Background Technology

[0002] In the warehousing industry, hoists are often used as devices to carry goods or move AGVs up and down on different shelves, or to lift AGVs to the corresponding tracks.

[0003] In the prior art, one type of hoist uses a sprocket and chain drive mechanism to move the lifting platform up and down. For example, patent CN205773065U discloses a hoisting device driven by a sprocket and chain. Patent CN220431173U discloses a pallet-type hoist, which also uses a sprocket and chain drive to move the cargo platform. When using this type of hoist driven by a sprocket and chain, the lifting platform often experiences a sinking phenomenon during loading due to chain stretching, and a rebound phenomenon during unloading as the chain recovers its stretch. This prevents the lifting platform from stopping at the predetermined height after loading or unloading, resulting in a height difference. This causes the height of the cargo platform to be inconsistent with the track or cargo position to be docked, leading to docking failure.

[0004] Therefore, a new technical solution is needed to solve the above problems. Utility Model Content

[0005] Purpose of the utility model: In view of the above-mentioned shortcomings, this utility model provides a hoist with a platform locking mechanism to avoid the sinking or rebounding of the lifting platform due to the tensile deformation of the chain.

[0006] Technical Solution: To solve the above problems, the hoist with a platform locking mechanism provided by this utility model can adopt the following technical solution:

[0007] A hoist with a platform locking mechanism includes a frame and a lifting platform located within the frame. The frame includes several columns, with several crossbeams arranged parallel to each other from bottom to top between two columns. The platform locking mechanism includes a push rod device installed on the edge of the lifting platform and a shaft hole seat installed on at least one crossbeam. The push rod device has a telescopic push rod and a locking shaft coaxially connected to the front end of the push rod. The shaft hole seat has a shaft hole for receiving the locking shaft. When the lifting platform moves to a height that matches the push rod device and the shaft hole seat, the push rod pushes the locking shaft into the shaft hole.

[0008] Furthermore, the frame is provided with two parallel crossbeams at the same height, and each crossbeam is provided with a shaft hole seat. The lifting platform is provided with push rod devices on the edges adjacent to the two crossbeams, and one push rod device corresponds to one shaft hole seat.

[0009] Furthermore, the lifting platform is equipped with two push rod devices, which are located on both sides of the lifting platform, and the push rods of the two push rod devices extend in opposite directions.

[0010] Furthermore, among the several crossbeams between the two columns, the height difference between any two adjacent crossbeams is the same, and each crossbeam, except for the one at the highest position, is provided with a shaft hole seat.

[0011] Furthermore, the push rod device also includes a sliding sleeve seat mounted on the lifting platform, with the locking shaft passing through the sliding sleeve seat.

[0012] Furthermore, the push rod device is one of an electric push rod device, a hydraulic push rod device, or a pneumatic push rod device.

[0013] Furthermore, the diameter of the locking shaft is smaller than the diameter of the shaft hole.

[0014] Beneficial effects: The hoist with a platform locking mechanism, by setting a platform locking mechanism between the lifting platform and the crossbeam that can be fixed to each other, prevents the lifting platform from sinking or rebounding at the height of the crossbeam when it moves to the height of the crossbeam. This allows the lifting platform to stop more accurately at the predetermined height after loading or unloading. Attached Figure Description

[0015] Figure 1 This is the front view of the hoist of this utility model.

[0016] Figure 2 This is a partial perspective view of the hoist of this utility model.

[0017] Figure 3 This is a perspective view of the platform locking mechanism in this utility model.

[0018] Figure 4 This is a cross-sectional schematic diagram of the platform locking mechanism in this utility model. Detailed Implementation

[0019] like Figure 1 and Figure 2As shown, this embodiment discloses a hoist with a platform locking mechanism, including a frame and a lifting platform 1 located within the frame. The frame includes several columns 2, wherein several crossbeams 3 are arranged between two columns 2, and the crossbeams 3 are arranged parallel from bottom to top. In this embodiment, an example is given where three crossbeams 3 are arranged between two columns 2, such as... Figure 1 As shown. The lifting platform 1 in this hoist can move up and down using a sprocket and chain drive as described in the background art, or it can be driven by other means commonly used in the art, such as synchronous belt drive. However, for the sake of explaining the technical problem solved by this technical solution, this embodiment uses the sprocket and chain drive described in the background art to move the lifting platform 1 up and down.

[0020] Please combine Figure 3 and Figure 4 As shown, the hoist also includes a platform locking mechanism 4. The platform locking mechanism 4 includes a push rod device 41 mounted on the edge of the lifting platform and a shaft hole seat 42 mounted on at least one crossbeam 3. In this embodiment, among the several crossbeams 3 between the two columns, the height difference between adjacent crossbeams is the same, and each crossbeam, except for the highest crossbeam, is provided with a shaft hole seat 42. The push rod device 41 includes a telescopic push rod 43, a locking shaft 44 coaxially connected to the front end of the push rod 43, and a sliding sleeve seat 45 mounted on the lifting platform 1, with the locking shaft 44 passing through the sliding sleeve seat 45. The push rod device 41 can be selected as an electric push rod device, a hydraulic push rod device, or a pneumatic push rod device. The push rod device 41 is mounted on the lifting platform via a mounting bracket 46.

[0021] The shaft hole seat 42 is provided with a shaft hole for receiving the locking shaft 44. When the lifting platform 1 moves to the appropriate height between the push rod device 41 and the shaft hole seat 42, the push rod 43 pushes the locking shaft 44 into the shaft hole. Thus, when the hoist moves to the height of a crossbeam 3 with a shaft hole seat 42, it is fixed to the crossbeam by the platform locking mechanism. In actual use, the space between the two crossbeams is generally formed for the movement of the supply box or the traveling trolley. That is, the height of the crossbeam 3 with a shaft hole seat 42 is the height at which the lifting platform 1 is to be connected to a certain shelf or rail. Therefore, when the lifting platform 1 is fixed to the crossbeam by the platform locking mechanism, the above-mentioned connection operation can be completed. Even if goods or a trolley move onto the lifting platform 1, increasing the load, the locking mechanism will prevent the platform from sinking. Similarly, when goods or a trolley leave the platform while it is secured to the crossbeam via the platform locking mechanism, reducing the load, the platform will not spring back due to the chain tension. Therefore, this lifting machine allows the lifting platform 1 to stop accurately at a predetermined height after loading or unloading.

[0022] To further ensure the stable fixation of the lifting platform 1 to the crossbeams, in this embodiment, the frame is provided with two parallel crossbeams 3 at the same height, and each crossbeam 3 is provided with a shaft hole seat 42, such as... Figure 2 As shown. The lifting platform 1 and the two crossbeams 3 are each equipped with a push rod device 41 at their adjacent edges, meaning the lifting platform 1 has two push rod devices 41, each corresponding to a shaft hole seat 42. These two push rod devices 41 are located on opposite sides of the lifting platform 1, with the push rods extending in opposite directions. The lifting platform 1 is fixed to the two crossbeams 3 at the same height through the simultaneous connection and cooperation of the two push rod devices 41 with the two shaft hole seats 42, further improving the stability of the lifting platform 1 and the crossbeams 3 in the fixed state. Furthermore, to ensure redundant design for the connection between the locking shaft and the shaft hole, and to avoid misalignment due to precision errors, the diameter of the locking shaft is slightly smaller than the diameter of the shaft hole.

[0023] The hoist provided in this embodiment can prevent the lifting platform from sinking or rebounding at that height by fixing it to the crossbeam through the platform locking mechanism, so that the lifting platform can stop more accurately at the predetermined height after loading or unloading.

Claims

1. A hoist with a platform locking mechanism, comprising a frame and a lifting platform located within the frame, the frame comprising a plurality of columns, wherein a plurality of crossbeams are provided between two columns, and the plurality of crossbeams are arranged parallel from bottom to top, characterized in that, It also includes a platform locking mechanism, which includes a push rod device mounted on the edge of the lifting platform and a shaft hole seat mounted on at least one crossbeam; The push rod device is equipped with a telescopic push rod and a locking shaft coaxially connected to the front end of the push rod. The shaft hole seat is equipped with a shaft hole for receiving the locking shaft. When the lifting platform moves to the height that matches the push rod device and the shaft hole seat, the push rod pushes the locking shaft into the shaft hole.

2. The hoist with a platform locking mechanism according to claim 1, characterized in that, The frame has two parallel crossbeams at the same height, and each crossbeam has a shaft hole seat. The lifting platform is provided with push rod devices on the edges adjacent to the two crossbeams, and one push rod device corresponds to one shaft hole seat.

3. The hoist with a platform locking mechanism according to claim 2, characterized in that, The lifting platform is equipped with two push rod devices, which are located on both sides of the lifting platform, and the push rods of the two push rod devices extend in opposite directions.

4. The hoist with a platform locking mechanism according to claim 1, characterized in that, Among the several crossbeams between the two columns, the height difference between any two adjacent crossbeams is the same, and each crossbeam except the one at the highest position is provided with a shaft hole seat.

5. The hoist with a platform locking mechanism according to any one of claims 1 to 4, characterized in that, The push rod device also includes a sliding sleeve seat installed on the lifting platform, and the locking shaft passes through the sliding sleeve seat.

6. The hoist with a platform locking mechanism according to claim 5, characterized in that, The push rod device is one of an electric push rod device, a hydraulic push rod device, or a pneumatic push rod device.

7. The hoist with a platform locking mechanism according to claim 5, characterized in that, The diameter of the locking shaft is smaller than the diameter of the shaft hole.

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