Anti-falling hopper lifting device

Abstract

The utility model relates to a safer anti-falling hopper lifting device. The anti-falling hopper lifting device comprises a hopper, a lifting frame, a chain, a chain wheel and a lifting power source, the chain wheel is installed on the lifting frame, the chain is wound on the chain wheel, the chain wheel is in transmission connection with the lifting power source, and the hopper is connected with the chain through a hopper connecting seat. The chain is connected with a hanging buckle fixing seat, the hanging buckle fixing seat and the hopper connecting seat are located on the same side section of the chain, a rocker seat is connected on the hopper or the hopper connecting seat, a blocking rocker in the shape of L is hingedly connected on the rocker seat, the inner side end of the blocking rocker is connected with the hanging buckle fixing seat through a first tension spring, a second tension spring is connected on the rocker seat, the second tension spring is connected with the inner side end of the blocking rocker, the first tension spring and the second tension spring pull the inner side end of the blocking rocker, and the lifting frame is provided with a plurality of blocking blocks from bottom to top. The anti-falling hopper lifting device is provided with an anti-falling structure, and the safety of hopper lifting is ensured.

Description

Technical Field

[0001] This utility model relates to a packaging machine, specifically to a hopper lifting device for lifting materials to be packaged to a certain height. Background Technology

[0002] In automated packaging production lines in industries such as food, chemicals, and pharmaceuticals, the conveying of materials to the packaging machine's hopper via a hopper lifting device is a crucial step in achieving continuous production. Traditional lifting devices typically employ a chain-hopper structure, where a motor drives the chain to move the hopper vertically or inclined along a guide rail, transferring materials from a lower to a higher position. However, this structure presents significant safety hazards in practical applications: when the chain breaks due to long-term wear, overload, or material fatigue, the fully loaded hopper will instantly fall due to loss of traction. This sudden fall can not only cause material spillage and production interruption, but more seriously, the high-speed descent of the hopper can cause personal injury to operators and even structural damage to the equipment. Summary of the Invention

[0003] In view of the shortcomings of the existing technology, this utility model innovatively provides a safer anti-falling hopper lifting device.

[0004] This anti-fall hopper lifting device includes a hopper, a lifting frame, a chain, a sprocket, and a lifting power source. The sprocket is mounted on the lifting frame, the chain is wound around the sprocket, and the sprocket is connected to the lifting power source. The hopper is connected to the chain via a hopper connecting seat. The device is characterized by: a hook fixing seat connected to the chain, the hook fixing seat and the hopper connecting seat being located on the same side of the chain; a rocker arm seat connected to the hopper or the hopper connecting seat; an L-shaped blocking rocker arm hinged to the rocker arm seat; the inner end of the blocking rocker arm being connected to the hook fixing seat via a first tension spring; a second tension spring connected to the rocker arm seat; the second tension spring being connected to the inner end of the blocking rocker arm; the first and second tension springs pulling the inner end of the blocking rocker arm back and forth; a plurality of blocking blocks arranged from bottom to top on the lifting frame; and the outer end of the blocking rocker arm being held inside the blocking blocks by the combined force of the first and second tension springs.

[0005] The lifting frame is equipped with a lifting guide frame, the hopper is connected to a connecting rod, the connecting rod is connected to a guide wheel, and the guide wheel is located inside the lifting guide frame.

[0006] The guide wheel is located above the hook fixing seat.

[0007] The hook fixing seat is connected to the chain via a hook connecting seat.

[0008] The anti-fall hopper lifting device provided by this utility model ensures the safety of hopper lifting by setting an anti-fall structure. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the internal structure of the present invention; Figure 3 This is a front view of the internal structure of this utility model; Figure 4 This is a diagram illustrating the locking process of this utility model. Detailed Implementation

[0010] like Figure 1 and Figure 2 As shown, this anti-fall hopper lifting device includes a hopper 1, a lifting frame 2, a chain 5, a sprocket 6, and a lifting power source. The sprocket 6 is mounted on the lifting frame 2, and the chain 5 is wound around the sprocket 6. The sprocket 6 is connected to the lifting power source for transmission. The hopper 1 is connected to the chain 5 through a hopper connecting seat 10. During operation, driven by the lifting power source, the sprocket 6 rotates, driving the chain 5 to move. The chain 5 then drives the hopper 1 to move through the hopper connecting seat 10, thus moving the hopper 1 upwards carrying the material. The lifting frame 2 can be vertical or angled upwards.

[0011] To prevent the hopper 1 from falling due to the chain 5 breaking, such as Figure 2 As shown, a hook fixing seat 7 is connected to the chain 5. The hook fixing seat 7 and the hopper connecting seat 10 are located on the same side of the chain 5. A rocker arm seat 11 (the rocker arm seat 1 can be connected to the hopper connecting seat 10 or to a part connected to the hopper 1) is connected to the hopper 1 or the hopper connecting seat 10. An L-shaped blocking rocker arm 4 is hinged to the rocker arm seat 11. The inner end of the blocking rocker arm 4 is connected to the hook fixing seat 7 through a first tension spring 8. A second tension spring 9 is connected to the rocker arm seat 11. The second tension spring 9 is connected to the inner end of the blocking rocker arm 4. Figure 4 As shown, the first tension spring 8 and the second tension spring 9 pull the inner end of the blocking rocker arm 4 from front to back. The lifting frame 2 is provided with several blocking blocks 3 from bottom to top. The outer end of the blocking rocker arm 4 is held inside the blocking block 3 by the combined force of the first tension spring 8 and the second tension spring 9.

[0012] The anti-fall principle of this anti-fall hopper lifting device is as follows: Under normal circumstances, the chain 5 carries the hopper 1 upwards. Since the hook fixing seat 7 and the hopper connecting seat 10 are both connected to the same side of the chain 5, point A of the chain 5 is protected. The connection point between (the hook fixing seat 7 and the chain 5) and point B (the connection point between the hopper connecting seat 10 and the chain 5) moves upward synchronously in a taut state, and the first tension spring 8 is in a taut state. The combined force of the first tension spring 8 and the second tension spring 9... The outer end of the blocking rocker arm 4 remains inside the blocking block 3, allowing the hopper 1 to move up and down normally. When the section from point A to point C to point B of the chain 5 breaks, this section will no longer be taut. As a result, the first tension spring 8 will pull the hook fixing seat 7 towards the hopper connecting seat 10, thus rendering the tension of the first tension spring 8 ineffective. Figure 4 As shown, the blocking rocker arm 4 swings only under the tension of the second tension spring 9. This causes the outer end of the blocking rocker arm 4 to rotate to the outside of the blocking block 3. When the hopper 1 falls, the outer end of the blocking rocker arm 4 acts on the blocking block 3, thus preventing the hopper 1 from falling. When the section between point A and point B of the chain 5 breaks, point A will move upwards, and point B will move downwards. Because the two ends separate, the first tension spring 8 is directly damaged. The blocking rocker arm 4 then swings only under the tension of the second tension spring 9. This causes the outer end of the blocking rocker arm 4 to rotate to the outside of the blocking block 3. When the hopper 1 falls, the outer end of the blocking rocker arm 4 acts on the blocking block 3, thus preventing the hopper 1 from falling. This structure effectively prevents the hopper 1 from falling due to the breakage of the chain 5, preventing equipment damage and ensuring personnel safety.

[0013] In order to achieve smooth lifting and lowering of hopper 1, such as Figure 2 As shown, a lifting guide frame 14 is provided on the lifting frame 2, and a connecting rod is connected to the hopper 1. A guide wheel 12 is connected to the connecting rod and is located inside the lifting guide frame. By moving the guide wheel 12 within the lifting guide frame 14, the hopper 1 can achieve smooth lifting and lowering.

[0014] like Figure 2 As shown, the guide wheel 12 is located above the hook fixing seat 7. The guide wheel 12 and the hopper connecting seat 10 form a support surface to keep the hopper 1 stable. Since the guide wheel 12 is at the top, the guide wheel 12 can also play a limiting role (the lifting guide frame 14 has the top).

[0015] Finally, it is worth mentioning that, Figure 2 As shown, the hook fixing seat 7 is connected to the chain 5 through the hook connecting seat 13. That is, the hook fixing seat 7 is connected to the hook connecting seat 13, and the hook connecting seat 13 is connected to the chain 5.

Claims

1. A hopper lifting device for preventing falling, comprising a hopper (1), a lifting frame (2), a chain (5), a sprocket (6), and a lifting power source, wherein the sprocket (6) is mounted on the lifting frame (2), the chain (5) is wound around the sprocket (6), the sprocket (6) is connected to the lifting power source for transmission, and the hopper (1) is connected to the chain (5) through a hopper connecting seat (10); characterized in that: The chain (5) is connected to a hook fixing seat (7), the hook fixing seat (7) and the hopper connecting seat (10) are located on the same side of the chain (5), the hopper (1) or the hopper connecting seat (10) is connected to a rocker arm seat (11), the rocker arm seat (11) is hinged to an L-shaped blocking rocker arm (4), the inner end of the blocking rocker arm (4) is connected to the hook fixing seat (7) through a first tension spring (8), the rocker arm seat (11) is connected to a second tension spring (9), the second tension spring (9) is connected to the inner end of the blocking rocker arm (4), the first tension spring (8) and the second tension spring (9) pull the inner end of the blocking rocker arm (4) back and forth, the lifting frame (2) is provided with several blocking blocks (3) from bottom to top, the outer end of the blocking rocker arm (4) is held inside the blocking block (3) under the combined force of the first tension spring (8) and the second tension spring (9).

2. The anti-falling hopper lifting device according to claim 1, characterized in that: The lifting frame (2) is provided with a lifting guide frame, the hopper (1) is connected with a connecting rod, the connecting rod is connected with a guide wheel (12), and the guide wheel (12) is located inside the lifting guide frame.

3. The anti-falling hopper lifting device according to claim 2, characterized in that: The guide wheel (12) is located above the hook fixing seat (7).

4. The anti-falling hopper lifting device according to claim 1, characterized in that: The hook fixing seat (7) is connected to the chain (5) through the hook connecting seat (13).

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