A stable dual-positioning electric hoist

Abstract

This utility model relates to the field of electric hoist technology and discloses a stable dual-positioning electric hoist. The stable dual-positioning electric hoist includes a body, a servo motor fixedly installed on the inner wall of the body, a drive gear fixedly installed at the output end of the servo motor, and a driven gear rotatably installed on the inner wall of the body. The drive gear meshes with the driven gear, and a winch is coaxially fixedly installed on the driven gear. A chain is sleeved on the outer surface of the winch, and a connecting seat is fixedly connected to the end of the chain. A hook is rotatably installed at the bottom of the connecting seat, and a stop is rotatably installed on one side of the hook. By incorporating anti-slip components, uneven contact areas are formed on both sides of the hook, and the spring's pushing force on the top block ensures the anti-slip properties of the sling during lateral lifting of items on the hook, preventing slippage or deviation that could affect the safety of lifting the items.

Description

Technical Field

[0001] This utility model relates to the field of electric hoist technology, specifically to a dual-positioning electric hoist with good stability. Background Technology

[0002] Electric hoists are small and lightweight lifting devices that use an electric motor to drive a drum or sprocket to lift heavy objects. They are characterized by their small size, light weight, and ease of operation, and are widely used in industrial and mining enterprises, warehouses, docks, bridge construction, and other scenarios. They can be used alone or installed on equipment such as single-girder cranes and gantry cranes.

[0003] In existing technologies, electric hoists generally lack positioning structures, relying solely on the winch motor to drive the winch rotation to raise and lower the chain. However, the lack of positioning for the chain and hook during lifting and control results in low stability and safety. Therefore, existing technologies typically add corresponding limit devices to assist in their use. While the hook of the electric hoist can limit the position of the connecting parts of the lifting equipment to some extent when it is carrying an object for transportation, there is still a possibility of slippage and displacement during lateral transportation, which affects the stable use of the electric hoist. In view of this, we propose a dual-positioning electric hoist with better stability. Utility Model Content

[0004] The purpose of this utility model is to provide a dual-positioning electric hoist with good stability to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a stable dual-positioning electric hoist, comprising a body, a servo motor fixedly mounted on the inner wall of the body, a drive gear fixedly mounted on the output end of the servo motor, a driven gear rotatably mounted on the inner wall of the body, the drive gear meshing with the driven gear, a winch coaxially fixedly mounted on the driven gear, a chain sleeved on the outer surface of the winch, a connecting seat fixedly connected to the end of the chain, a hook rotatably mounted on the bottom of the connecting seat, a stop rotatably mounted on one side of the hook, and the interior of the body is provided with... The device includes a mechanical limiting component and a magnetic limiting component at the bottom of the body. The mechanical limiting component includes a micro switch fixedly installed on the inner wall of the body, and a trigger rod extending out of the outer wall of the bottom of the body fixedly installed at the bottom of the micro switch. The magnetic limiting component includes a magnetic base fixedly installed on the outer wall of the bottom of the body. An adsorption block is fixedly installed on the side wall of the hook. An anti-slip component is provided on the surface of the hook. The anti-slip component includes a fixing sleeve fixedly installed on the side wall of the hook. A top block is slidably installed on the inner wall of the fixing sleeve. A spring is fixedly connected between the bottom outer wall of the top block and the inner wall of the fixing sleeve.

[0006] Preferably, the stop is located on the side of the hook, thereby providing protection and preventing the hook from falling off.

[0007] Preferably, the number of anti-slip components is set to two sets, and the two sets of anti-slip components are mirror images of each other on the front and rear sides of the hook. The number of fixing sleeves is set to multiple sets, and the multiple sets of fixing sleeves are evenly distributed on the side of the hook. Adjacent sets of fixing sleeves are arranged in a high-low distribution to form staggered contact parts between the side of the hook and the position of the sling of the item.

[0008] Preferably, the top corners of the top block and the edges of the fixing sleeve are rounded to avoid greater wear on the slings used for hoisting items.

[0009] Preferably, the top block is provided with a torsion assembly, which includes a circular hole in the inner wall of the top block, a top rod is movably installed inside the circular hole, a spiral groove is formed on the arc-shaped inner surface of the circular hole, a convex ball is fixedly installed on the arc-shaped outer surface of the top rod, a contact plate is fixedly installed on the top of the top rod, and an arc-shaped band is fixedly installed on the upper surface of the contact plate.

[0010] Preferably, the push rod includes a thin rod and a thick rod, the thick rod is disposed on top of the thin rod, and the top end of the thick rod is connected to the contact plate. The shape of the circular hole is adapted to the shape of the push rod to prevent the push rod from falling out of the circular hole.

[0011] Preferably, the arc-shaped band is wavy to increase its coefficient of friction when in contact with the sling.

[0012] Compared with the prior art, this utility model provides a dual-positioning electric hoist with good stability, and has the following beneficial effects:

[0013] 1. This stable double-positioning electric hoist is equipped with anti-slip components, forming uneven contact areas on both sides of the hook. The spring pushes the top block to ensure the anti-slip properties of the sling during the lateral lifting of the item on the hook, preventing slippage or deviation that could affect the safety of the lifting.

[0014] 2. This stable double-positioning electric hoist is equipped with a torsion assembly. The sling presses against the top block until the inner wall of the bottom of the fixed sleeve presses against the top rod. With the help of the spiral groove and the convex ball, the top rod rotates while moving upward. The rubber contact plate and the arc belt increase the contact and clamping effect between the device and the sling, ensuring the stability of the goods during hoisting. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a partial cross-sectional view of the present invention.

[0017] Figure 3 This is a schematic diagram of the chain, connecting seat, and hook structure of this utility model;

[0018] Figure 4 This is a schematic diagram of the hook structure of this utility model;

[0019] Figure 5 This utility model Figure 4 Enlarged view of region A in the middle;

[0020] Figure 6 This is a schematic diagram of the top block structure of this utility model;

[0021] Figure 7 This is a schematic diagram of the cross-sectional structure of the top block of this utility model.

[0022] In the diagram: 1. Body; 3. Servo motor; 4. Driven gear; 5. Winch; 6. Chain; 7. Connecting seat; 8. Hook; 9. Stop block; 11. Adsorption block; 12. Anti-slip component; 121. Fixing sleeve; 122. Top block; 123. Spring; 13. Torsion component; 131. Round hole; 132. Top rod; 133. Spiral groove; 134. Convex ball; 135. Contact plate; 136. Arc belt. Detailed Implementation

[0023] like Figures 1-7 As shown, this utility model provides a technical solution: a stable dual-positioning electric hoist, including a body 1, a servo motor 3 fixedly installed on the inner wall of the body 1, a drive gear fixedly installed at the output end of the servo motor 3, a driven gear 4 rotatably installed on the inner wall of the body 1, the drive gear and the driven gear 4 meshing, a winch 5 coaxially fixedly installed on the driven gear 4, a chain 6 sleeved on the outer surface of the winch 5, a connecting seat 7 fixedly connected to the end of the chain 6, a hook 8 rotatably installed at the bottom of the connecting seat 7, a stop 9 rotatably installed on one side of the hook 8, and a mechanical limiting component provided inside the body 1. A magnetic limiting component is provided at the bottom of the body 1. The mechanical limiting component includes a micro switch fixedly installed on the inner wall of the body 1. A trigger rod extending out of the bottom outer wall of the body 1 is fixedly installed at the bottom of the micro switch. The magnetic limiting component includes a magnetic base fixedly installed on the bottom outer wall of the body 1. An adsorption block 11 is fixedly installed on the side wall of the hook 8. An anti-slip component 12 is provided on the surface of the hook 8. The anti-slip component 12 includes a fixing sleeve 121 fixedly installed on the side wall of the hook 8. A top block 122 is slidably installed on the inner wall of the fixing sleeve 121. A spring 123 is fixedly connected between the bottom outer wall of the top block 122 and the inner wall of the fixing sleeve 121.

[0024] Furthermore, the servo motor 3 is activated to drive the drive gear to rotate, which in turn drives the driven gear 4 to rotate. Since the diameter ratio of the drive gear to the driven gear 4 is 1:2, the speed of the driven gear 4 and the winch 5 during rotation is reduced, preventing the chain 6 from being wound up and down too quickly, which would affect the safety of the hoisting. At the same time, the magnetic base is set above the adsorption block 11, and the magnetic properties between the magnetic base and the adsorption block 11 are opposite. After the chain 6 is wound up to a certain distance, the magnetic base and the adsorption block 11 approach each other and are kept relatively fixed by the magnetic attraction between the magnetic base and the adsorption block 11, so as to mechanically fix the chain 6 and prevent over-winding, which would affect the normal and safe use of the equipment. Specifically, the trigger rod is set through the body 1. When the bottom end of the trigger rod touches the hoisted object, the micro switch controls the servo motor 3 to shut down, preventing excessive contraction from affecting the hoisting safety and the safety of the electric hoist.

[0025] Meanwhile, the stop block 9 is set on the side of the hook 8, which can block and prevent the hook 8 from falling off. Due to the blockage at one end of the hook 8, the stop block 9 can only deflect towards the inside of the hook 8, which makes it easy for the sling to be hooked while preventing it from falling off.

[0026] Specifically, there are two sets of anti-slip components 12, which are mirror images of each other on the front and rear sides of the hook 8. At the same time, there are multiple sets of fixing sleeves 121, which are evenly distributed on the side of the hook 8. Adjacent sets of fixing sleeves 121 are arranged at different heights to form staggered contact areas between the side of the hook 8 and the sling of the item, thereby improving the anti-slip effect. Furthermore, the top corner of the top block 122 and the edge of the fixing sleeve 121 are rounded to avoid greater wear on the sling of the hoisted item and affect the service life of the sling.

[0027] In one embodiment of this utility model, a torsion assembly 13 is provided inside the top block 122. The torsion assembly 13 includes a circular hole 131 opened in the inner wall of the top block 122. A top rod 132 is movably installed inside the circular hole 131. A spiral groove 133 is opened on the arc-shaped inner surface of the circular hole 131. A convex ball 134 is fixedly installed on the arc-shaped outer surface of the top rod 132. A contact plate 135 is fixedly installed on the top of the top rod 132. An arc-shaped belt 136 is fixedly installed on the upper surface of the contact plate 135.

[0028] In addition, the top rod 132 includes a thin rod and a thick rod. The thick rod is located on top of the thin rod, and the top end of the thick rod is connected to the contact plate 135. Meanwhile, the shape of the round hole 131 is adapted to the shape of the top rod 132 to prevent the top rod 132 from falling out of the round hole 131. Furthermore, the arc-shaped belt 136 is wavy. Both the arc-shaped belt 136 and the contact plate 135 are made of rubber to increase the static friction coefficient when in contact with the sling used for lifting the item, thus ensuring its stability during the lifting process.

[0029] In this utility model, during use, the sling for securing the item is placed on the hook 8. The stop block 9 prevents the sling from slipping. Then, the servo motor 3 is started, working with the drive gear and driven gear 4 to drive the winch 5 to rotate, thereby lowering and retracting the chain 6. After the chain 6 is wound up to a certain distance, the magnetic base and the adsorption block 11 approach each other. The magnetic attraction between the magnetic base and the adsorption block 11 keeps them relatively fixed, thus mechanically fixing the chain 6 and preventing over-winding, which would affect the normal and safe use of the equipment. This forms the first layer of positioning protection for the hook 8. At the same time, during the lifting process, the bottom of the trigger rod can contact the object and send a signal to the micro switch, which can also control the servo motor 3 to shut down, thus forming the second layer of positioning protection for the hook 8. Through the double protection set at the bottom of the machine body 1, the hook 8 is prevented from being raised excessively, which would affect the safety of the equipment.

[0030] Secondly, by setting the anti-slip component 12, an uneven contact part is formed on both sides of the hook 8, and the spring 123 pushes the top block 122 to ensure the anti-slip property of the sling for transporting the item during the horizontal transport process on the hook 8, so as to avoid slippage or deviation, which would affect the safety of transporting the item.

[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 stable dual-positioning electric hoist, comprising a body (1), characterized in that: A servo motor (3) is fixedly installed on the inner wall of the machine body (1). A drive gear is fixedly installed at the output end of the servo motor (3). A driven gear (4) is rotatably installed on the inner wall of the machine body (1). The drive gear meshes with the driven gear (4). A winch (5) is fixedly installed on the driven gear (4) on the same axis. A chain (6) is sleeved on the outer surface of the winch (5). A connecting seat (7) is fixedly connected to the end of the chain (6). A hook (8) is rotatably installed at the bottom of the connecting seat (7). A stop block (9) is rotatably installed on one side of the hook (8). A mechanical limiting component is provided inside the machine body (1). A magnetic limiting component is provided at the bottom of the machine body (1). The mechanical limiting component includes a micro switch fixedly installed on the inner wall of the body (1), and a trigger rod extending out of the bottom outer wall of the body (1) is fixedly installed at the bottom of the micro switch. The magnetic limiting component includes a magnetic base fixedly installed on the bottom outer wall of the body (1). An adsorption block (11) is fixedly installed on the side wall of the hook (8). An anti-slip component (12) is provided on the surface of the hook (8). The anti-slip component (12) includes a fixing sleeve (121) fixedly installed on the side wall of the hook (8). A top block (122) is slidably installed on the inner wall of the fixing sleeve (121). A spring (123) is fixedly connected between the bottom outer wall of the top block (122) and the inner wall of the fixing sleeve (121).

2. The stable dual-positioning electric hoist according to claim 1, characterized in that: The stop (9) is located on the side of the hook (8).

3. The stable dual-positioning electric hoist according to claim 1, characterized in that: The number of anti-slip components (12) is set in two sets, and the two sets of anti-slip components (12) are mirror images of the front and rear sides of the hook (8). The number of fixing sleeves (121) is set in multiple sets, and the multiple sets of fixing sleeves (121) are evenly distributed on the side of the hook (8), and the adjacent sets of fixing sleeves (121) are arranged in a high-low distribution.

4. The stable dual-positioning electric hoist according to claim 1, characterized in that: The top corner of the top block (122) and the edge of the fixing sleeve (121) are both rounded.

5. A stable dual-positioning electric hoist according to claim 1, characterized in that: The top block (122) is provided with a torsion assembly (13). The torsion assembly (13) includes a circular hole (131) opened in the inner wall of the top block (122). A top rod (132) is movably installed inside the circular hole (131). A spiral groove (133) is opened on the arc-shaped inner surface of the circular hole (131). A convex ball (134) is fixedly installed on the arc-shaped outer surface of the top rod (132). A contact plate (135) is fixedly installed on the top of the top rod (132). An arc-shaped band (136) is fixedly installed on the upper surface of the contact plate (135).

6. The stable dual-positioning electric hoist according to claim 5, characterized in that: The top rod (132) includes a thin rod and a thick rod. The thick rod is located on top of the thin rod, and the top end of the thick rod is connected to the contact plate (135). The shape of the round hole (131) is adapted to the shape of the top rod (132).

7. A dual-positioning electric hoist with good stability according to claim 5, characterized in that: The arc-shaped band (136) is arranged in a wavy shape.

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