Lifting device with anti-falling structure

Abstract

The utility model discloses a lifting device with an anti-falling structure, which relates to the technical field of lifters, and comprises a support base and a lifting bucket, the top of the support base is fixedly connected with a fixing frame and a discharging frame, the two side surfaces of the lifting bucket are rotatably connected with second pulleys, the second pulleys slide in the discharging frame, and the second pulleys are fixedly connected with the fixing frame. A connecting rod is fixedly connected to the bottom of the lifting bucket, first pulleys are rotationally connected to the two ends of the connecting rod correspondingly, the first pulleys slide in the fixing frame, an anti-falling mechanism is arranged on the discharging frame, and a second pulley extrudes the inclined face of a sliding stop lever to extrude the sliding stop lever to slide towards the interior of a fixing base; and then the sliding stop lever is driven to quickly slide and reset under the action of the elastic force of the elastic mechanism, and when an accident occurs, the second pulley is limited to slide downwards in the unloading frame through the plane of the sliding stop lever, so that the phenomenon that the elevator bucket falls off suddenly is prevented, and the use is safe.

Description

Technical Field

[0001] This utility model relates to the field of hoisting technology, specifically a hoisting device with a fall prevention structure. Background Technology

[0002] Hoists are large mechanical devices that transport materials by changing their potential energy, such as mine hoists and dam hoists. In a broader sense, elevators, overhead cranes, winches, jacks, hoists, gate hoists, etc. can all be called hoists, and single-bucket hoists are one type of hoist.

[0003] Chinese Patent Publication No. CN207566789U discloses a cargo self-unloading elevator, including a lifting frame body inclinedly arranged on the side of a packing machine, a drive device, a drive sprocket, a driven sprocket, and a transmission chain. The lifting frame body includes a guide frame and a lifting frame sleeved on the guide frame. Rollers are provided between the lifting frame and the guide frame. A baffle plate parallel to the guide frame is provided on the side of the lifting frame near the packing machine. The transmission shaft of the drive device is connected to the drive sprocket at the bottom of the guide frame. The transmission chain is vertically arranged on the drive sprocket and driven sprocket at the left and right ends of the guide frame. The transmission chain forms a ring structure with the drive sprocket and driven sprocket on the same side. A hook is provided at the upper end of the baffle plate, which is hung on the bucket wall of the packing machine, and the lower end is fixed to the second support rod by bolts.

[0004] However, the inventor of the above-mentioned device believes that it has certain defects. The device lacks an anti-fall mechanism. If the conveyor chain breaks or the sprocket reverses rapidly, the hopper will fall rapidly, which poses certain safety hazards. Therefore, this utility model provides a lifting device with an anti-fall structure. Utility Model Content

[0005] The purpose of this invention is to provide a lifting device with a fall-prevention structure to solve the problems raised in the prior art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a lifting device with an anti-fall structure, comprising a support base and a lifting bucket, wherein a fixed frame and a unloading frame are fixedly connected to the top of the support base, and a second pulley is rotatably connected to both sides of the lifting bucket, the second pulley sliding inside the unloading frame, a connecting rod is fixedly connected to the bottom of the lifting bucket, and a first pulley is rotatably connected to both ends of the connecting rod, the first pulley sliding inside the fixed frame, an anti-fall mechanism is provided on the unloading frame, the anti-fall mechanism comprising a fixed seat fixed on the unloading frame, a sliding stop bar slidably connected to one end of the fixed seat, one end of the sliding stop bar extending into the interior of the unloading frame, and an elastic mechanism is provided inside the fixed seat.

[0007] Preferably, the fixed frame is provided with a lifting mechanism for lifting the bucket. The lifting mechanism is connected to the connecting rod and drives the bucket to be lifted.

[0008] Preferably, the elastic mechanism includes a connecting spring, which is installed between one end of the sliding stop and the inner wall of the fixed seat. Under the action of the connecting spring, the sliding stop can quickly slide and reset when it is no longer under force.

[0009] Preferably, there are multiple fixed seats, and one end of each of the multiple sliding stops is fixedly connected to a connecting rope. The other ends of the multiple connecting ropes are connected to each other through a connecting slide plate. By pulling the connecting slide plate away from the fixed seat, the connecting ropes pull one end of the multiple sliding stops into the fixed seat.

[0010] Preferably, an electric push rod is fixedly connected to the unloading rack, and the telescopic end of the electric push rod is fixedly connected to the connecting slide plate. By activating the electric push rod, the connecting slide plate is driven to slide away from the fixed seat.

[0011] Preferably, one end of the lifting bucket is hinged to a movable bucket cover by a pin, and one end of the movable bucket cover is detachably connected to the inner wall of the lifting bucket by bolts. By removing the bolts on the lifting bucket, the connection between one end of the movable bucket cover and the lifting bucket is released, and the movable bucket cover is flipped over to open one end of the lifting bucket.

[0012] Preferably, the lifting mechanism includes sprockets rotating at both ends of the fixed frame, the two sprockets being connected by a transmission chain, the connecting rod being fixed to the transmission chain, and a drive motor for driving the sprockets to rotate being fixedly connected to the top of the support base. By starting the drive motor, the sprockets are driven to rotate, causing the transmission chain to transmit and transport, thereby driving the connecting rod to move up and down.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This application uses a lifting bucket to lift and feed materials on a support base. During the lifting process, the first pulley slides inside the fixed frame, and the second pulley slides inside the unloading frame. The second pulley presses against the inclined surface of the sliding stop, causing the sliding stop to slide into the fixed base. Then, under the action of the elastic force of the elastic mechanism, the sliding stop quickly slides back to its original position. In case of an accident, the plane of the sliding stop restricts the second pulley from sliding downward inside the unloading frame, preventing the lifting bucket from suddenly falling, thus ensuring safe use.

[0015] 2. This application uses an electric push rod to push the connecting slide away from the fixed seat and slide it away. Under the connection of the connecting rope, one end of the sliding stop bar is pulled into the fixed seat, releasing the anti-fall mechanism and allowing the lifting bucket to descend and reset after unloading. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural view of a lifting device with a fall-prevention structure according to the present invention;

[0017] Figure 2 This is a sectional perspective view of the fixing frame and unloading frame of a lifting device with an anti-fall structure according to the present invention;

[0018] Figure 3 This utility model relates to a lifting device with a fall prevention structure. Figure 2 Enlarged view at point A;

[0019] Figure 4 This is a sectional perspective view of the fixing seat of a lifting device with an anti-fall structure according to the present invention.

[0020] The following are the labels in the diagram: 1. Support base; 11. Drive motor; 2. Fixing frame; 21. First pulley; 3. Unloading frame; 31. Second pulley; 4. Lifting bucket; 41. Movable bucket cover; 5. Sliding stop bar; 51. Connecting rope; 6. Fixing seat; 61. Connecting spring; 7. Connecting slide plate; 8. Electric push rod. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1 , Figure 2 , Figure 3 and Figure 4 A lifting device with a fall prevention structure includes a support base 1 and a lifting bucket 4. A fixed frame 2 and a discharge frame 3 are fixedly connected to the top of the support base 1. The discharge frame 3 is L-shaped. One end of the lifting bucket 4 is hinged to a movable bucket cover 41 by a pin. One end of the movable bucket cover 41 is detachably connected to the inner wall of the lifting bucket 4 by bolts. By removing the bolts on the lifting bucket 4, the movable bucket cover 41 can be flipped to open one end of the lifting bucket 4, which facilitates cleaning and loading of the inside of the lifting bucket 4.

[0023] Please refer to it again. Figure 1 , Figure 2 and Figure 3The lifting bucket 4 is rotatably connected to two sides of a second pulley 31, which slides inside the unloading frame 3. A connecting rod is fixedly connected to the bottom of the lifting bucket 4, and a first pulley 21 is rotatably connected to both ends of the connecting rod. The first pulley 21 slides inside the fixed frame 2. The fixed frame 2 is provided with a lifting mechanism for lifting the lifting bucket 4. The lifting mechanism is connected to the connecting rod. Both the second pulley 31 and the first pulley 21 are cylindrical. Under the action of the second pulley 31 and the first pulley 21, the lifting bucket 4 is stably raised and lowered between the two fixed frames 2 and the two unloading frames 3.

[0024] Please refer to it again. Figure 1 , Figure 2 and Figure 3 The lifting mechanism includes sprockets rotating at both ends of the fixed frame 2. The two sprockets are connected by a transmission chain. A connecting rod is fixed on the transmission chain. A drive motor 11 that drives the sprockets to rotate is fixedly connected to the top of the support base 1. The drive motor 11 is started to drive the sprockets to rotate. The two sets of sprockets are connected by two connecting rods. When the two transmission chains are transmitting between the two sets of chains, they drive the lifting bucket 4 to lift and transport along the direction of the fixed frame 2. This lifting mechanism has been disclosed in Chinese Patent Publication No. CN207566789U, "A Self-Unloading Lifting Machine for Cargo", and is common general knowledge. The output shaft end of the drive motor 11 is connected to the sprockets on the fixed frame 2 by a sprocket assembly.

[0025] Please refer to it again. Figure 1 , Figure 2 , Figure 3 and Figure 4 The unloading rack 3 is equipped with an anti-fall mechanism, which includes a fixed seat 6 fixed on the unloading rack 3. One end of the fixed seat 6 is slidably connected to a sliding stop bar 5. One end of the sliding stop bar 5 extends into the interior of the unloading rack 3. The fixed seat 6 is equipped with an elastic mechanism. One end of the sliding stop bar 5 is inclined. When the second pulley 31 slides and rises inside the unloading rack 3, it squeezes the inclined surface of one end of the sliding stop bar 5 and pushes the sliding stop bar 5 to slide into the interior of the fixed seat 6. Then, the elastic force of the elastic mechanism drives the sliding stop bar 5 to slide back quickly. The plane of one end of the sliding stop bar 5 restricts the downward sliding of the second pulley 31 and prevents the lifting bucket 4 from falling suddenly. The elastic mechanism includes a connecting spring 61, which is installed between one end of the sliding stop bar 5 and the inner wall of the fixed seat 6.

[0026] Please refer to it again. Figure 1 , Figure 2 , Figure 3 and Figure 4There are multiple fixed seats 6. One end of each of the multiple sliding stops 5 is fixedly connected to a connecting rope 51. The other end of the multiple connecting ropes 51 is connected through a connecting slide plate 7. An electric push rod 8 is fixedly connected to the unloading rack 3. The telescopic end of the electric push rod 8 is fixedly connected to the connecting slide plate 7. By activating the electric push rod 8, the connecting slide plate 7 is pushed away from the fixed seat 6 and slid. Under the connecting action of the connecting ropes 51, one end of the sliding stop 5 is pulled into the interior of the fixed seat 6, so that the lifting bucket 4 after unloading slides down and resets.

[0027] Working principle: The material to be lifted is placed inside the lifting bucket 4. The lifting mechanism is driven by starting the drive motor 11, which lifts the lifting bucket 4 along the direction of the fixed frame 2. Then, the material inside the lifting bucket 4 is unloaded by sliding the second pulley 31 inside the unloading frame 3. As the second pulley 31 slides inside the unloading frame 3, it presses the inclined surface of one end of the sliding stop bar 5, pushing the sliding stop bar 5 into the fixed seat 6. Then, the elastic force of the elastic mechanism drives the sliding stop bar 5 to quickly slide back to its original position. The plane at one end of the sliding stop bar 5 restricts the downward sliding of the second pulley 31, preventing the lifting bucket 4 from suddenly falling. When the lifting bucket 4 needs to be reset after unloading, the electric push rod 8 is started to push the connecting slide plate 7 away from the fixed seat 6. Under the connection of the connecting rope 51, the sliding stop bar 5 is pulled into the fixed seat 6, releasing the anti-fall measure.

[0028] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A hoisting device with a fall protection structure, characterized by: The utility model provides a kind of lifting device, including support base (1) and lifting bucket (4), the top of the support base (1) is fixedly connected with fixed frame (2) and unloading frame (3), the two side surfaces of the lifting bucket (4) are rotatably connected with second pulley (31), the second pulley (31) slides in the inside of unloading frame (3), the bottom of the lifting bucket (4) is fixedly connected with connecting rod, the two ends of the connecting rod are rotatably connected with first pulley (21), the first pulley (21) slides in the inside of fixed frame (2), the unloading frame (3) is equipped with anti-falling mechanism, the anti-falling mechanism includes fixed seat (6) fixed on unloading frame (3), one end of the fixed seat (6) is slidably connected with sliding stop bar (5), one end of the sliding stop bar (5) extends to the inside of the unloading frame (3), the inside of the fixed seat (6) is equipped with elastic mechanism.

2. The lifting device with anti-falling structure according to claim 1, characterized in that: The fixed frame (2) is provided with a lifting mechanism for lifting the lifting bucket (4), and the lifting mechanism is connected with the connecting rod.

3. The lifting device with anti-falling structure according to claim 1, characterized in that: The elastic mechanism includes a connecting spring (61) installed between one end of the sliding stop bar (5) and the inner side wall of the fixed seat (6).

4. The lifting device with a fall protection structure according to claim 1, characterized in that: The fixed seat (6) is a plurality of, one end of the plurality of sliding stop bars (5) is fixedly connected with a connecting pull rope (51), and the other end of the plurality of connecting pull ropes (51) is connected through a connecting slide plate (7).

5. The lifting device with a fall protection structure according to claim 4, characterized in that: The unloading frame (3) is fixedly connected with an electric push rod (8), and the telescopic end of the electric push rod (8) is fixedly connected with the connecting slide plate (7).

6. The lifting device with a fall protection structure according to claim 1, characterized in that: One end of the lifting bucket (4) is hingedly connected with a movable bucket cover (41) through a pin shaft, and the other end of the movable bucket cover (41) is detachably connected with the inner side wall of the lifting bucket (4) through bolts.

7. The lifting device with a fall protection structure according to claim 2, characterized in that: The lifting mechanism includes sprockets rotatably connected at both ends of the fixed frame (2), and the two sprockets are drivingly connected through a transmission chain, the connecting rod is fixed on the transmission chain, and the top of the support base (1) is fixedly connected with a driving motor (11) for driving the sprockets to rotate.

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