防坠装置及提升机

Abstract

本实用新型公开了一种防坠装置及提升机，该防坠装置包括：外圈；内圈，内圈位于外圈内，用于连接提升机的提升轴，内圈的外壁上设有容置槽，容置槽包括沿内圈的周向相对设置的第一槽壁和第二槽壁，第一槽壁与外圈对应位置的切线形成的第一夹角，大于第二槽壁与外圈对应位置的切线形成的第二夹角；止逆滚针，止逆滚针设于容置槽内，并与容置槽的槽壁和外圈的内侧壁接触；多孔转轮，多孔转轮的外周侧上设有多个插孔，插孔环绕多孔转轮的轴向依次间隔设置；及插孔机构，设于多孔转轮的周边，用于在提升轴逆转时插入至插孔内，以锁定外圈。本申请的防坠装置，能有效防止提升机出现逆转，避免出现物料高空坠落的情况，而且还结构简单。

Claims

1. A fall arrest device, characterized in that, include: Outer ring; The inner ring is located inside the outer ring and is used to connect the lifting shaft of the hoist. The outer wall of the inner ring is provided with a receiving groove. The receiving groove includes a first groove wall and a second groove wall arranged opposite to each other along the circumference of the inner ring. The first included angle formed by the tangent of the first groove wall and the corresponding position of the outer ring is greater than the second included angle formed by the tangent of the second groove wall and the corresponding position of the outer ring. Anti-reverse roller, the anti-reverse roller is disposed in the receiving groove and contacts the groove wall of the receiving groove and the inner side wall of the outer ring; A multi-hole wheel, wherein a plurality of insertion holes are provided on the outer peripheral side of the multi-hole wheel, and the insertion holes are arranged sequentially at intervals around the axial direction of the multi-hole wheel; A socket mechanism is provided around the periphery of the multi-hole rotating wheel, and is used to insert into the socket when the lifting shaft reverses to lock the outer ring; A non-reverse elastic element is located within the receiving groove and between the non-reverse roller and the first groove wall.

2. The fall arrest device of claim 1, wherein, The anti-reverse elastic element is a spring.

3. The fall arrest device of claim 1, wherein, The number of receiving grooves is multiple, and the multiple receiving grooves are arranged sequentially at intervals along the circumference of the inner ring; the number of anti-reverse rollers is equal to the number of receiving grooves, and they are arranged in a one-to-one correspondence.

4. The fall arrest device of claim 1, wherein, The porous rotating wheel and the outer ring are connected by a fixing assembly. The fixing assembly includes a first fixing member, which includes a first fixing part and a second fixing part connected to each other. The first fixing part is located on one side of the outer ring along the axial direction of the outer ring and is connected to the outer ring. The second fixing part is located on the side of the first fixing part away from the outer ring. The porous rotating wheel is fixedly sleeved on the second fixing part and is isolated from the outer ring by the first fixing part.

5. The fall arrest device of claim 4, wherein, The fixing component further includes a second fixing member, which is sleeved on the outer ring and coaxially arranged with the outer ring.

6. The fall arrest device of claim 1, wherein, The porous wheel has a gear structure, and the insertion hole has a tooth groove.

7. The fall arrest device of claim 1, wherein, The insertion mechanism includes a locking pin and a pusher assembly connecting the locking pin; the locking pin is inserted into one of the insertion holes of the multi-hole wheel along the axial direction of the multi-hole wheel, and is used to move away from or towards the multi-hole wheel under the drive of the pusher assembly.

8. The fall arrest device of claim 7, wherein, The push assembly is an electromagnetically driven structure; the push assembly includes a mounting frame, a sliding module, an electromagnet, and an elastic pusher; the sliding module is slidably mounted on the mounting frame; the locking pin is mounted on the sliding module; the elastic pusher is mounted on the mounting frame; the electromagnet is mounted on the frame of the hoist, and the driving end of the electromagnet is connected to the sliding module, used to push the sliding module with the locking pin in the energized state to move away from the multi-hole wheel, so that the locking pin disengages from the insertion hole; the elastic pusher is linked to the sliding module, used to drive the slider with the locking pin in the energized state to move towards the multi-hole wheel, so that the locking pin is inserted into the insertion hole.

9. The fall arrest device of claim 8, wherein, The mounting bracket includes a first mounting plate and a second mounting plate. The first mounting plate is mounted on the frame of the hoist, and the second mounting plate is perpendicularly connected to the first mounting plate. The sliding module includes a slider and a sliding frame. The slider is slidably mounted on the second mounting plate and is located above the second mounting plate. The sliding frame is mounted on the top side of the slider. The locking pin is mounted on the sliding frame. The output end of the electromagnet is connected to the sliding frame. The push assembly also includes a limit switch mounted on the sliding frame. The second mounting plate is configured corresponding to the limit switch and is used to trigger the limit switch after the locking pin disengages from the socket.

10. A hoist characterized by The device includes a frame, a loading device, a lifting shaft and a lifting power device, a transmission device, and a fall arrestor as described in any one of claims 1 to 9, all mounted on the frame. The two ends of the lifting shaft are respectively connected to the inner ring and the lifting power device. The transmission device is drivingly connected to the lifting shaft and connected to the loading device. The lifting power device drives the lifting shaft to rotate, causing the lifting shaft to synchronously drive the inner ring of the fall arrestor to rotate, and drives the loading device to perform lifting and lowering movements via the transmission device.

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