A hoist with safety protection function

Abstract

This utility model relates to the field of hoist technology and discloses a hoist with safety protection function, including a housing. The housing cavity is provided with a hoisting mechanism for hoisting materials, and the housing cavity is symmetrically provided with protective mechanisms for limiting the hoisting mechanism. Through the cooperation between the protective housing, the limiting channel, the second rotating shaft, the linkage, and the limiting components, the position of the limiting components is adjusted by the rotating shaft driving the gear, thereby locking the limiting teeth onto the chain of the hoisting mechanism. Simultaneously, under the action of the linkage, both ends of the chain can be locked, thus improving the limiting effect on the hoisting mechanism. Furthermore, the limiting channel prevents the chain from swinging after breakage, allowing the protective mechanism to better fix the chain, thereby improving the safety protection effect of the hoist and enhancing its overall safety performance.

Description

Technical Field

[0001] This utility model relates to the field of hoisting technology, specifically a hoisting machine with safety protection functions. Background Technology

[0002] Chain elevators are a relatively advanced type of vertical lifting equipment in China, and can be widely used to lift various bulk materials, such as: ore, coal, cement, cement clinker, grain, fertilizer, etc. In various industrialized countries, this type of elevator is widely used. In the prior art, Chinese utility model application CN202320196549.7 discloses a chain hoist with chain breakage protection function, including a housing. Two horizontally arranged rotating shafts are rotatably connected to the inner wall of the housing. Two transmission discs are fixedly sleeved on the rotating shafts. The same chain is sleeved on the two transmission discs, which are on the same vertical plane. Multiple fixing blocks are provided between the two chains. Two threaded rods are rotatably connected to the inner wall of the housing. Each threaded rod has two sections of threads with opposite directions, and threaded sleeves are sleeved on both sections of the threads. This solution, by setting the chain, can make the material lifting efficiency higher and the lifting operation more stable; by setting the clamping plate, the overall protection and safety of the hoist can be improved. Although the above technical solution uses clamps to hold and position the broken chain to prevent the material from falling, the chain will shake due to inertia when it breaks suddenly during transmission. In addition, because there is lubricating oil on the chain, the clamped chain may slip due to the gravity of the material. The protection effect of the hoist chain after breakage needs to be further improved. Therefore, we need to propose a hoist with safety protection function. Utility Model Content

[0003] The purpose of this utility model is to provide a hoist with safety protection function, which limits the chain and fixes the swing path of the broken chain, thereby facilitating and quickly clamping the broken chain. By utilizing the teeth on the toothed plate to fit the chain seam, the stability of chain positioning is improved, chain slippage is prevented, the protection effect of the hoist is improved, and the overall safety performance of the hoist is enhanced, so as to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a hoist with safety protection function, comprising a housing, wherein a hoisting mechanism for hoisting materials is provided in the inner cavity of the housing, and a protection mechanism for limiting the movement of the hoisting mechanism is symmetrically provided in the inner cavity of the housing. The protective mechanism includes two sets of protective shells, and two sets of second rotating shafts are rotatably arranged between the two sets of protective shells. The two sets of second rotating shafts are equipped with linkage components for synchronous rotation. Gears are fixedly connected to both ends of the two sets of second rotating shafts. The gears mesh with two sets of symmetrically arranged limiting components. The inner cavity of the two sets of protective shells is provided with limiting channels for the two sets of limiting components to slide. An installation chamber is provided between the two sets of limiting channels for the two sets of limiting components to slide, and the gear is disposed in the installation chamber.

[0005] Preferably, the limiting member includes a connecting plate, one side of which is fixedly connected to multiple sets of limiting teeth, which are arranged at equal intervals. The other side of the connecting plate is fixedly connected to two sets of guide posts, and each of the two sets of guide posts has a toothed groove that meshes with a gear on its opposite side.

[0006] Preferably, the linkage includes two sets of synchronous pulleys and a synchronous belt. The two sets of synchronous pulleys are respectively disposed on the outer middle of the two sets of second rotating shafts, and the synchronous belt is installed on the outer side of the two sets of synchronous pulleys and disposed between the two sets of protective shells.

[0007] Preferably, a partition is fixedly connected to the inner cavity of the limiting channel, and a through hole is provided on one side of the partition for multiple sets of limiting teeth to pass through.

[0008] Preferably, one end of one set of the second rotating shafts passes through the housing and is driven by a second motor, and the width of the connecting plate is the same as the width of the limiting channel.

[0009] Preferably, the lifting mechanism includes two sets of first rotating shafts rotatably disposed in the inner cavity of the housing. One end of one set of first rotating shafts passes through the housing and is driven by a first motor. Both ends of the two sets of first rotating shafts are fixedly connected to sprockets. A chain is disposed on each pair of sprockets, and the chain passes through the inner cavity of the limiting channel.

[0010] Preferably, a plurality of fixing blocks are fixedly connected to one side of the protective shell, and the plurality of fixing blocks are fixedly connected to one side of the inner cavity of the housing.

[0011] Compared with the prior art, the beneficial effects of this utility model are: This utility model mainly utilizes the cooperation between the protective shell, the limiting channel, the second rotating shaft, the linkage component, and the limiting component. The rotating shaft drives the gear to adjust the position of the limiting component, thereby clamping the limiting teeth onto the chain of the lifting mechanism. Simultaneously, under the action of the linkage component, both ends of the chain can be clamped at the same time, thus improving the limiting effect on the lifting mechanism. At the same time, under the action of the limiting channel, the swinging of the chain after breakage can be prevented, so that the protection mechanism can better fix the chain, thereby improving the safety protection effect of the hoist and improving the overall safety performance of the hoist. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the lifting mechanism structure of this utility model; Figure 3 This is a schematic diagram of the protective mechanism structure of this utility model; Figure 4 This is a schematic diagram of the limiting component structure of this utility model.

[0013] In the diagram: 1. Housing; 2. Lifting mechanism; 21. First rotating shaft; 22. Sprocket; 23. Chain; 24. First motor; 3. Protection mechanism; 31. Protective shell; 32. Limiting channel; 33. Partition plate; 34. Through hole; 35. Mounting chamber; 36. Second rotating shaft; 37. Second motor; 38. Gear; 39. Limiting component; 391. Connecting plate; 392. Limiting teeth; 393. Guide post; 394. Gear groove; 310. Linkage component; 3101. Synchronous pulley; 3102. Synchronous belt. Detailed Implementation

[0014] 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.

[0015] Please see Figure 1-4 This utility model provides a technical solution: a hoist with safety protection function, including a housing 1, a hoisting mechanism 2 for hoisting materials is provided in the inner cavity of the housing 1, and a protection mechanism 3 for limiting the hoisting mechanism 2 is symmetrically provided in the inner cavity of the housing 1. The protection mechanism 3 includes two sets of protective shells 31, and two sets of second rotating shafts 36 are rotatably arranged between the two sets of protective shells 31. The two sets of second rotating shafts 36 are provided with linkages 310 for synchronous rotation. Gears 38 are fixedly connected to both ends of the two sets of second rotating shafts 36. The gears 38 mesh with two sets of symmetrically arranged limiting members 39. The inner cavity of the two sets of protective shells 31 is provided with limiting channels 32 for the two sets of limiting members 39 to slide. An installation chamber 35 is provided between the two sets of limiting channels 32 for the two sets of limiting members 39 to slide, and the gear 38 is located in the installation chamber 35.

[0016] The limiting component 39 includes a connecting plate 391. Multiple sets of limiting teeth 392 are fixedly connected to one side of the connecting plate 391. The multiple sets of limiting teeth 392 are arranged at equal intervals. Two sets of guide posts 393 are fixedly connected to the other side of the connecting plate 391. The opposite side of the two sets of guide posts 393 is provided with tooth grooves 394 that mesh with the gear 38. The multiple sets of limiting teeth 392 on the connecting plate 391 improve the locking stability of the chain 23 after it breaks, thereby improving the safety inside the housing 1 and facilitating the maintenance of the hoist.

[0017] The linkage 310 includes two sets of synchronous pulleys 3101 and a synchronous belt 3102. The two sets of synchronous pulleys 3101 are respectively located on the outer middle of the two sets of second rotating shafts 36. The synchronous belt 3102 is installed on the outer side of the two sets of synchronous pulleys 3101 and is located between the two sets of protective shells 31. The synchronous pulleys 3101 and the synchronous belt 3102 enable the two sets of second rotating shafts 36 to rotate synchronously, thereby enabling the two sets of gears 38 to transmit power to the guide post 393 synchronously. This facilitates the clamping of the chain 23 in the two sets of limiting channels 32 and improves the stability of the clamping.

[0018] A partition 33 is fixedly connected to the inner cavity of the limiting channel 32. A through hole 34 is provided on one side of the partition 33 for multiple sets of limiting teeth 392 to pass through. The partition 33 can prevent the chain 23 from contacting the limiting teeth 392, thereby preventing the limiting teeth 392 from obstructing the chain 23 during the lifting process.

[0019] One end of one set of second rotating shafts 36 passes through the housing 1 and is driven by the second motor 37. The width of the connecting plate 391 is the same as the width of the limiting channel 32. The limiting channel 32 limits the angle of the connecting plate 391, thereby ensuring that the limiting teeth 392 can be accurately inserted into the chain gap of the chain 23, thus improving the protection effect.

[0020] The lifting mechanism 2 includes two sets of first rotating shafts 21 rotatably disposed in the inner cavity of the housing 1. One end of one set of first rotating shafts 21 passes through the housing 1 and is driven by a first motor 24. Both ends of the two sets of first rotating shafts 21 are fixedly connected to sprocket discs 22. A chain 23 is disposed on each pair of sprocket discs 22. The chain 23 passes through the inner cavity of the limiting channel 32. The first motor 24 drives the sprocket discs 22 on the first rotating shafts 21, thereby causing the sprocket discs 22 to drive the chain 23 to lift the material, thus improving the lifting efficiency.

[0021] Multiple sets of fixing blocks are fixedly connected to one side of the protective shell 31, and the multiple sets of fixing blocks are fixedly connected to one side of the inner cavity of the housing 1. The fixing blocks improve the stability of the protective shell 31 installed in the housing 1, thereby preventing the protective mechanism 3 from falling off after the chain 23 is clamped, thus improving safety.

[0022] During operation, when lifting, the first motor 24 drives the first rotating shaft 21 to rotate the sprocket disc 22, which facilitates the sprocket disc 22 to drive the chain 23 for lifting. When the chain 23 breaks, it slides within the limiting channel 32 because it is moving through the channel. Simultaneously, the second motor 37 drives the second rotating shaft 36 to rotate the gear 38. Under the rotation of the gear 38, it meshes with the tooth groove 394 on the guide post 393, causing the two sets of opposing limiting members 39 to move away. The guide post 393 drives the limiting teeth 392 on the connecting plate 391 to pass through the through hole 34 and insert into the chain slot of the chain 23, thereby quickly locking the chain 23 and preventing it from falling out of the protective shell 31. This prevents the chain 23 from detaching from the housing 1 and prevents the lifted material from falling due to the chain 23 breaking, thus improving the overall safety of the elevator.

[0023] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An elevator with a safety protection function, comprising a casing (1), characterized in that: The inner cavity of the housing (1) is provided with a lifting mechanism (2) for lifting materials, and the inner cavity of the housing (1) is symmetrically provided with a protection mechanism (3) for limiting the lifting mechanism (2). The protective mechanism (3) includes two sets of protective shells (31), and two sets of second rotating shafts (36) are rotatably arranged between the two sets of protective shells (31). The two sets of second rotating shafts (36) are provided with linkage components (310) for synchronous rotation. Gears (38) are fixedly connected to both ends of the two sets of second rotating shafts (36). The gears (38) mesh with two sets of symmetrically arranged limiting components (39). The inner cavity of the two sets of protective shells (31) is provided with limiting channels (32) for the two sets of limiting components (39) to slide. An installation chamber (35) is provided between the two sets of limiting channels (32) for the two sets of limiting members (39) to slide, and the gear (38) is located in the installation chamber (35).

2. The elevator with a safety function according to claim 1, characterized in that: The limiting member (39) includes a connecting plate (391). One side of the connecting plate (391) is fixedly connected to multiple sets of limiting teeth (392), which are arranged at equal intervals. The other side of the connecting plate (391) is fixedly connected to two sets of guide posts (393), and each of the two sets of guide posts (393) has a tooth groove (394) that meshes with the gear (38) on its opposite side.

3. The elevator with a safety function according to claim 2, characterized in that: The linkage (310) includes two sets of synchronous pulleys (3101) and a synchronous belt (3102). The two sets of synchronous pulleys (3101) are respectively located on the outer middle of the two sets of second rotating shafts (36). The synchronous belt (3102) is installed on the outer side of the two sets of synchronous pulleys (3101) and is located between the two sets of protective shells (31).

4. The elevator with a safety function according to claim 3, characterized in that: The inner cavity of the limiting channel (32) is fixedly connected to a partition (33), and a through hole (34) is provided on one side of the partition (33) for multiple sets of limiting teeth (392) to pass through.

5. The elevator with a safety function according to claim 4, characterized in that: One end of one of the second rotating shafts (36) passes through the housing (1) and is driven by the second motor (37). The width of the connecting plate (391) is the same as the width of the limiting channel (32).

6. The elevator with safety protection function according to claim 1, characterized in that: The lifting mechanism (2) includes two sets of first rotating shafts (21) rotatably disposed in the inner cavity of the housing (1). One end of one set of first rotating shafts (21) passes through the housing (1) and is driven by a first motor (24). Both ends of the two sets of first rotating shafts (21) are fixedly connected to sprocket discs (22). A chain (23) is provided on each pair of sprocket discs (22). The chain (23) passes through the inner cavity of the limiting channel (32).

7. The elevator with safety protection function according to claim 1, characterized in that: The protective shell (31) has multiple sets of fixing blocks fixedly connected to one side, and the multiple sets of fixing blocks are fixedly connected to one side of the inner cavity of the casing (1).

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