Anti-deviation ring chain hoist
By setting a driven component and a micro switch on the electric hoist, automatic limit and dual monitoring of the hook are achieved, solving the problem of the electric hoist hook easily falling off and improving the convenience and reliability of operation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- TIANJIN TOYO LIFTING MASCH MFG CO LTD
- Filing Date
- 2025-08-15
- Publication Date
- 2026-06-02
AI Technical Summary
Existing electric hoists lack effective limiting structures, making it inconvenient to operate the hook at heights and prone to falling off. Furthermore, the existing limiting mechanisms have poor reliability.
A chain hoist designed to prevent deviation is described. By setting a driven component and a micro switch on the hook, and using a combination of pull rope, connecting rod, pressure plate, connecting spring and guide wheel, the hook can be automatically limited. The distance between the hook and the load is monitored by the micro switch and proximity switch, thus achieving dual limit.
It effectively prevents the hook from falling off during use, improves the convenience and reliability of operation, and ensures the safety and stability of the electric hoist.
Smart Images
Figure CN224313157U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of electric hoist technology, specifically to a chain hoist that can prevent deviation. Background Technology
[0002] An electric hoist is a lifting device installed on overhead cranes and gantry cranes. Electric hoists are characterized by their small size, light weight, simple operation, and ease of use, and are used in industrial and mining enterprises, warehouses, docks, and other places.
[0003] Currently available electric hoists lack limit switches or have only a single limit switch structure, resulting in poor reliability. Furthermore, electric hoists are typically attached to fixed structures like crossbars via hooks on their tops. However, these hooks usually have anti-drop mechanisms, meaning that to remove the hoist, the limit switch must be moved first. Since electric hoists are generally mounted at a high position, this makes operation inconvenient. Therefore, we propose a chain hoist with anti-deviation features. Utility Model Content
[0004] The purpose of this invention is to provide a chain hoist that can prevent deviation, so as to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, the present invention provides the following technical solution: a chain hoist with anti-deviation capability, comprising an electric hoist body, a hook on the top of the electric hoist body, a locking block hinged to the hook, a torsion spring between the locking block and the hook, and a driven component on the hook.
[0006] The driven component includes:
[0007] Pull the rope; the pull rope is used to control the release of the locking block.
[0008] The connecting rod is used in conjunction with the pressure plate to control the pull rope to pull the locking block;
[0009] The connecting spring is used to control the linkage's reset.
[0010] Guide wheel, the guide wheel is used to guide the pull rope.
[0011] Preferably, the outer wall of the hanging hook is provided with a placement groove, and the hanging hook is provided with a through hole. The placement groove allows the pull rope to be placed and moved, and the pull rope can pass through the through hole and connect with the locking block.
[0012] Preferably, the connecting rod passes through the hook and is slidably connected to it. A pressure plate is fixed to the bottom of the connecting rod, and a connecting block is fixed to the top of the connecting rod. The connecting block is fixed to one end of the pull rope, and the other end of the pull rope is fixed to the locking block. A connecting spring is fixed to the top of the hook, and the end of the connecting spring away from the hook is fixed to the connecting rod. Two sets of guide wheels are provided, both of which are located on the outer wall of the hook. After the hook is hung, the pressure plate is squeezed, causing the connecting rod to move upward on the hook. The connecting rod moves with the connecting block, and the connecting block no longer pulls the pull rope. Under the action of the torsion spring, the locking block moves to close the hook and achieve a limit, which can effectively prevent the hook from falling off during use. When it is necessary to remove the electric hoist, simply lift the entire electric hoist body upward. The pressure plate is no longer squeezed, and under the action of the connecting spring, the connecting rod moves downward with the connecting block, so that the connecting block can pull the pull rope, causing the locking block to no longer close the hook. At this time, the hook can be easily removed.
[0013] Preferably, the bottom of the electric hoist body is provided with a micro switch and a proximity switch. Both the micro switch and the proximity switch are electrically connected to the motor of the electric hoist body. The proximity switch is a sensor switch that monitors the distance of the load hook at the bottom of the electric hoist body. When the distance exceeds or falls below a threshold, the motor of the electric hoist body is turned off. When the load hook at the bottom of the electric hoist body moves upward a certain distance and touches the micro switch, the electric hoist body can be turned off, thus achieving dual limit switching.
[0014] Compared with the prior art, this utility model provides a chain hoist that can prevent deviation, which has the following beneficial effects:
[0015] 1. This anti-deviation chain hoist, through its driven component, ensures that after the hook is attached, the pressure plate is squeezed, causing the connecting rod to move upward on the hook. The connecting rod moves along with the connecting block, which no longer pulls the rope. Under the action of the torsion spring, the locking block moves to close the hook, effectively preventing it from falling off during use and preventing deviation. When it is necessary to remove the electric hoist, simply lift the entire electric hoist body upward. The pressure plate is no longer squeezed, and under the action of the connecting spring, the connecting rod moves downward with the connecting block, allowing the connecting block to pull the rope. This prevents the locking block from closing the hook, making it easy to remove the hook.
[0016] 2. This anti-deviation chain hoist uses a micro switch and a proximity switch. The proximity switch monitors the distance between the load hook at the bottom of the electric hoist body and the load hook. When the distance exceeds or falls below a threshold, the motor of the electric hoist body is turned off. When the load hook at the bottom of the electric hoist body moves upward a certain distance and touches the micro switch, the electric hoist body is turned off, achieving dual limit and effectively improving reliability. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the overall front view of the present invention;
[0018] Figure 2 This is a schematic diagram of the electric hoist body of this utility model with the shell removed.
[0019] Figure 3 This is a schematic diagram of the overall bottom view of the present invention;
[0020] Figure 4 This is a schematic diagram of the connection structure between the hook and the driven component of this utility model;
[0021] Figure 5 This is a schematic diagram of the structure of the hook with the groove and through hole of this utility model.
[0022] In the diagram: 1. Electric hoist body; 2. Hanging hook; 3. Driven component; 31. Pull rope; 32. Connecting rod; 33. Pressure plate; 34. Connecting spring; 35. Guide wheel; 36. Connecting block; 4. Locking block; 5. Torsion spring; 6. Placement slot; 7. Through hole; 8. Micro switch; 9. Proximity switch. Detailed Implementation
[0023] like Figures 1-5 As shown, this utility model provides a technical solution: a chain hoist with anti-deviation capability, including an electric hoist body 1, a hanging hook 2 is provided on the top of the electric hoist body 1, a locking block 4 is hinged on the hanging hook 2, a torsion spring 5 is provided between the locking block 4 and the hanging hook 2, and a driven component 3 is provided on the hanging hook 2, the driven component 3 including: a pull rope 31, a connecting rod 32, a pressure plate 33, a connecting spring 34, a guide wheel 35, and a connecting block 36.
[0024] The outer wall of the hook 2 is provided with a placement groove 6 and a through hole 7. The placement groove 6 allows the pull rope 31 to be placed and moved, and the pull rope 31 can pass through the through hole 7 and connect to the locking block 4.
[0025] It is worth noting that the connecting rod 32 passes through the hanging hook 2 and is slidably connected to the hanging hook 2. A pressure plate 33 is fixed to the bottom of the connecting rod 32, and a connecting block 36 is fixed to the top of the connecting rod 32. The connecting block 36 is fixed to one end of the pull rope 31, and the other end of the pull rope 31 is fixed to the locking block 4. A connecting spring 34 is fixed to the top of the hanging hook 2, and the end of the connecting spring 34 away from the hanging hook 2 is fixed to the connecting rod 32. Two sets of guide wheels 35 are provided, and both sets of guide wheels 35 are located on the outer wall of the hanging hook 2. After the hanging hook 2 is hung, the pressure plate 33 is squeezed and the connecting rod 32 moves along the hanging hook 2. As the electric hoist moves upward, the connecting rod 32 moves together with the connecting block 36. The connecting block 36 no longer pulls the pull rope 31. Under the action of the torsion spring 5, the locking block 4 moves to close the hook 2 and achieve a limit, which can effectively prevent the hook 2 from falling off during use. When it is necessary to remove the electric hoist, simply lift the electric hoist body 1 as a whole upward. The pressure plate 33 is no longer squeezed. Under the action of the connecting spring 34, the connecting rod 32 moves downward with the connecting block 36, so that the connecting block 36 can pull the pull rope 31, so that the locking block 4 no longer closes the hook 2. At this time, the hook 2 can be easily removed.
[0026] A pressure sensor is installed at pressure plate 33. During the lifting process, if the center of gravity is not in the same vertical plane as the chain hoist, the center of gravity is adjusted by adjusting the corresponding position of the chain hoist, making the overall lifting safer and more stable.
[0027] In this embodiment, a micro switch 8 and a proximity switch 9 are provided at the bottom of the electric hoist body 1. Both the micro switch 8 and the proximity switch 9 are electrically connected to the motor of the electric hoist body 1. The proximity switch 9 is a sensor switch that monitors the distance of the load hook at the bottom of the electric hoist body 1. When the distance exceeds or falls below a threshold, the motor of the electric hoist body 1 is turned off. When the load hook at the bottom of the electric hoist body 1 moves upward a certain distance and touches the micro switch 8, the electric hoist body 1 can be turned off.
[0028] When in use, after the hook 2 on the top of the electric hoist body 1 is attached, the pressure plate 33 is squeezed by the weight of the electric hoist body 1 itself. This causes the pressure plate 33 to move upward on the hook 2 along with the connecting rod 32. The connecting rod 32 moves together with the connecting block 36. The connecting block 36 no longer pulls the pull rope 31. Under the action of the torsion spring 5, the locking block 4 moves to close the hook 2 and achieve a limit, which can effectively prevent the hook 2 from falling off during use.
[0029] During normal use, the goods are hung on the loading hook at the bottom of the electric hoist body 1. The electric hoist body 1 drives the chain to move the loading hook to lift the goods. The proximity switch 9 monitors the distance of the loading hook at the bottom of the electric hoist body 1. When the distance exceeds or falls below the threshold, the motor of the electric hoist body 1 is turned off. When the loading hook at the bottom of the electric hoist body 1 moves upward a certain distance and touches the micro switch 8, the electric hoist body 1 can be turned off, thus achieving double limit.
[0030] When it is necessary to remove the electric hoist, simply lift the entire electric hoist body 1 upwards. The pressure plate 33 will no longer be squeezed. Under the action of the connecting spring 34, the connecting rod 32 moves downwards with the connecting block 36, so that the connecting block 36 can pull the pull rope 31, so that the locking block 4 will no longer close the hanging hook 2. At this time, the hanging hook 2 can be easily removed.
[0031] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.
Claims
1. A chain hoist with anti-deviation capability, comprising an electric hoist body (1), wherein a hook (2) is provided on the top of the electric hoist body (1), characterized in that: A locking block (4) is hinged to the hook (2), a torsion spring (5) is provided between the locking block (4) and the hook (2), and a driven component (3) is provided on the hook (2). The driven component (3) includes: Pull rope (31), pull rope (31) is used to control the release of the block (4) from the restriction; Link (32) is used to cooperate with pressure plate (33) to control pull rope (31) to pull block (4); A connecting spring (34) is used to control the resetting of the connecting rod (32); Guide wheel (35) is used to guide the pull rope (31).
2. The anti-deviation chain hoist according to claim 1, characterized in that: The outer wall of the hanging hook (2) is provided with a placement groove (6), and the hanging hook (2) is provided with a through hole (7).
3. The anti-deviation chain hoist according to claim 1, characterized in that: The connecting rod (32) passes through the hanging hook (2) and is slidably connected to the hanging hook (2). A pressure plate (33) is fixed at the bottom of the connecting rod (32).
4. The anti-deviation chain hoist according to claim 3, characterized in that: A connecting block (36) is fixed to the top of the connecting rod (32), the connecting block (36) is fixed to one end of the pull rope (31), the other end of the pull rope (31) is fixed to the locking block (4), and a connecting spring (34) is fixed to the top of the hanging hook (2).
5. A chain hoist with anti-deviation capability according to claim 4, characterized in that: The end of the connecting spring (34) away from the hook (2) is fixed to the connecting rod (32). There are two sets of guide wheels (35), and both sets of guide wheels (35) are set on the outer wall of the hook (2).
6. The anti-deviation chain hoist according to claim 1, characterized in that: The bottom of the electric hoist body (1) is provided with a micro switch (8) and a proximity switch (9), both of which are electrically connected to the motor of the electric hoist body (1).