Crane with anti-falling structure
By using a combination of limit rods and lasers in the crane, the problem of uneven force under the hook is solved, and the limit and dynamic path adjustment of the workpiece at the lowest position of the hook hook hole is realized, which improves the anti-fall effect of the crane and stability.
Patent Information
- Application Number
- CN202420963411.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-07
- Publication Date
- 2024-12-17
- Estimated Expiration
- 2034-05-07
AI Technical Summary
During the lifting process of existing cranes, the hook is prone to uneven stress and damage and decoupling, because it is impossible to ensure that the workpiece lifting structure is at the lowest position of the hook hook hole.
A crane with an anti-dehook structure is designed, using a combination of a limit rod and a laser. The lifting structure of the workpiece is limited to the lowest point of the hook hook hole through the limit rod, and the illumination angle and size are adjusted by the laser. Adapt to workpieces of different sizes and improve the anti-fall effect.
It effectively avoids the decoupling caused by uneven force of the hook, improves the anti-fall effect of the crane, and dynamically adjusts the driving path and vertical drop points according to the size of the workpiece, enhancing the stability and safety of the lifting.
Smart Images
Figure CN222181579U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of cranes, in particular to a crane with an anti-falling structure. Background Art
[0002] A crane refers to a multi-action lifting machine that can lift heavy objects vertically and carry them horizontally within a certain range. A bridge crane is a lifting equipment that is horizontally mounted above a workshop, warehouse, or material yard to lift materials. Because its two ends are located on tall concrete columns or metal brackets, it is shaped like a bridge. The bridge of a bridge crane runs longitudinally along the tracks laid on the elevated structures on both sides, and can make full use of the space under the bridge to lift materials without being hindered by ground equipment. It is the most widely used and most numerous type of lifting machine. Existing cranes usually install anti-drop hooks on the hooks to prevent falling during the lifting process. However, after this type of hook is connected to the workpiece lifting structure, it cannot ensure that the workpiece lifting structure is at the lowest position of the hook hole before lifting. As a result, the hook is prone to uneven force after lifting and is damaged and unhooked. Therefore, it is necessary to design a crane with an anti-drop structure. Utility Model Content
[0003] The purpose of the utility model is to provide a crane with an anti-falling structure to solve the problems raised in the above background technology.
[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a crane with an anti-falling structure, comprising a crane trolley frame and an electric hoist, the electric hoist is installed at the bottom of the crane trolley frame, the bottom of the electric hoist is connected to a bearing pulley through a lifting rope, the bottom of the bearing pulley is rotatably connected to a hook, an anti-unhooking plate is rotatably installed at the hook hole of the hook, both ends of the anti-unhooking plate are rotatably installed with a limit rod through a main shaft, a bolt is movably installed inside the limit rod, and screw holes matching the bolts are opened at both ends of the hook;
[0005] Fixed rods are installed on both sides of the crane trolley frame, electric push rods are installed on both ends of the fixed rods, mounting frames are installed at the ends of the fixed rods and the electric push rods, a mounting plate is installed inside the mounting frame, and a laser is installed at the bottom of the mounting plate.
[0006] Preferably, the mounting frame comprises a mounting rod and a mounting groove, the mounting rod is provided with a mounting groove matched with a mounting plate, and the mounting plate is rotatably connected to the mounting groove.
[0007] Preferably, the mounting bracket further comprises a motor, the motor is mounted on the end of the mounting rod, and the output end of the motor extends into the mounting groove and is connected to the mounting plate.
[0008] Preferably, the screw holes are distributed in a fan shape on the surfaces of both ends of the hook, and the interior of the screw holes is provided with internal threads that are compatible with the bolts.
[0009] Preferably, a limiting groove matched with the bolt is provided inside the limiting rod, and an arc groove is provided at the bottom of the limiting rod.
[0010] Preferably, the main shaft is fixedly connected to both ends of the anti-unhooking plate, a hole matching the main shaft is provided inside the limiting rod, and the limiting rod is rotatably connected to the main shaft.
[0011] Compared with the prior art, the beneficial effects of the utility model are:
[0012] 1. By installing a limit rod, when the hook is connected to the workpiece lifting structure, the limit rod can be used to limit the workpiece lifting structure at the lowest point of the hook hole, so as to avoid the situation in which the hook is damaged and unhooked due to uneven force after lifting because the workpiece lifting structure is not at the lowest position of the hook hole during the lifting process, thereby improving the anti-fall effect.
[0013] 2. By installing a mounting frame and a laser and changing the position and irradiation angle of the laser, the size of the laser irradiation on the ground can be expanded or reduced, so that the travel path of the crane trolley and the range of the vertical drop point of the workpiece can be projected on the ground according to the size of the hoisted workpiece, thereby improving the anti-fall effect. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a three-dimensional diagram of the utility model;
[0015] Figure 2 It is a bottom view of the utility model;
[0016] Figure 3 This is a bottom view of the crane trolley frame and the mounting frame of the utility model;
[0017] Figure 4 It is an expanded view of the hook and the limit rod of the utility model;
[0018] Figure 5 It is an expanded view of the mounting frame and the mounting plate of the utility model.
[0019] In the figure: 1. Crane trolley frame; 2. Fixing rod; 3. Electric push rod; 4. Mounting frame; 401. Mounting rod; 402. Mounting slot; 403. Motor; 5. Mounting plate; 6. Laser; 7. Electric hoist; 8. Bearing pulley; 9. Hook; 10. Anti-unhooking plate; 11. Spindle; 12. Limit rod; 13. Limit slot; 14. Bolt; 15. Screw hole. DETAILED DESCRIPTION
[0020] It is easy to understand that according to the technical solution of the utility model, without changing the essential spirit of the utility model, a person skilled in the art can propose a variety of interchangeable structural modes and implementation modes. Therefore, the following specific implementation modes and drawings are only exemplary descriptions of the technical solution of the utility model, and should not be regarded as the entirety of the utility model or as a limitation or restriction to the technical solution of the utility model.
[0021] The utility model provides a crane with an anti-falling structure, for example, Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, it includes a crane trolley frame 1 and an electric hoist 7. The electric hoist 7 is installed at the bottom of the crane trolley frame 1. The bottom of the electric hoist 7 is connected to a bearing pulley 8 through a lifting rope. The bottom of the bearing pulley 8 is rotatably connected to a hook 9. An anti-unhooking plate 10 is rotatably installed at the hook hole of the hook 9, wherein a reset spring structure is installed at the hook hole of the anti-unhooking plate 10 and the hook hole of the hook 9; both ends of the anti-unhooking plate 10 are rotatably installed with a limit rod 12 through a main shaft 11, wherein the main shaft 11 is fixedly connected At both ends of the anti-unhooking plate 10, a hole matching the main shaft 11 is opened inside the limit rod 12, and the limit rod 12 is rotatably connected to the main shaft 11; a bolt 14 is movably installed inside the limit rod 12, and screw holes 15 matching the bolt 14 are opened at both ends of the hook 9, wherein the screw holes 15 are fan-shaped and distributed on the surfaces of both ends of the hook 9, and the screw holes 15 are opened inside with internal threads matching the bolt 14; the limit rod 12 is opened inside with a screw thread matching the bolt 14. The limiting groove 13 and the bottom of the limiting rod 12 are provided with an arc groove; specifically, during the operation of the electric hoist 7, the bearing pulley 8 is lowered to a specified height by using a lifting rope. After the bearing pulley 8 reaches the specified position, the anti-unhooking plate 10 is pressed to hang the hook 9 on the lifting structure of the workpiece. After the connection is completed, the user manually adjusts the limiting rod 12. During the adjustment process of the limiting rod 12, it rotates with the main shaft 11 as the center of the circle. When the arc groove at the bottom of the limiting rod 12 contacts the lifting structure of the workpiece, the bolt 14 is passed through the limiting groove 13 and connected with the corresponding screw hole 15. After the connection, the limiting rod 12 is used to limit the lifting structure of the workpiece at the lowest point of the hook hole of the hook 9 to avoid the situation in which the hook 9 is damaged and unhooked due to uneven force due to the workpiece lifting structure not being at the lowest position of the hook hole of the hook 9 during the lifting process. After the limiting rod 12 is installed, the electric hoist 7 uses the lifting rope to drive the bearing pulley 8 to rise, so that the hook 9 lifts the workpiece for operation;
[0022] like Figure 1 , Figure 2 , Figure 3 and Figure 5As shown, fixed rods 2 are installed on both sides of the crane trolley frame 1, electric push rods 3 are installed at both ends of the fixed rod 2, mounting frames 4 are installed at the ends of the fixed rod 2 and the electric push rod 3, mounting plates 5 are installed inside the mounting frames 4, and lasers 6 are installed at the bottom of the mounting plates 5, wherein the lasers 6 are infrared lasers and are assembled at equal intervals at the bottom of the mounting plates 5; the mounting frame 4 includes a mounting rod 401 and a mounting groove 402, the mounting rod 401 has a mounting groove 402 adapted to the mounting plate 5, and the mounting plate 5 is rotatably connected to the mounting groove 402; the mounting frame 4 also includes a motor 403, the motor 403 is installed at the end of the mounting rod 401, and the output end of the motor 403 extends to the inside of the mounting groove 402 and is connected to the mounting plate 5; wherein the mounting rod 401 is fixedly connected to the fixed rod 2 and the electric push rod 3 respectively, and the top view vertical plane of the mounting frame 4 is larger than the top view vertical plane of the electric hoist 7;
[0023] Specifically, when in use, the crane trolley 1 is installed on the crossbeam of the crane, and the laser 6 emits infrared rays to the ground after being powered on. During the emission process, the electric push rod 3 is controlled, and the position of the mounting frame 4 can be adjusted when the electric push rod 3 is powered on. After the motor 403 is powered on, its output end can drive the mounting plate 5 to rotate inside the mounting groove 402. During the rotation of the mounting plate 5, the laser 6 is also driven to move, and the irradiation angle of the laser 6 is changed. The size of the laser 6 irradiated on the ground can be expanded or reduced, so that the driving path of the crane trolley 1 and the range of the vertical falling point of the workpiece can be projected and displayed on the ground according to the size of the hoisted workpiece, thereby improving the anti-fall effect.
[0024] The working principle of this embodiment is as follows: before use, the crane trolley 1 is installed on the crossbeam of the crane, and the crane trolley 1 is moved to the specified position. During the operation of the electric hoist 7, the bearing pulley 8 is lowered to the specified height by the lifting rope. After the bearing pulley 8 reaches the specified position, the anti-unhooking plate 10 is pressed, and the hook 9 is hung on the lifting structure of the workpiece. The limit rod 12 is manually adjusted. During the adjustment process, the limit rod 12 rotates with the main shaft 11 as the center of the circle. When the arc groove at the bottom of the limit rod 12 contacts the lifting structure of the workpiece, the bolt 14 is passed through the limit groove 13 and connected to the corresponding screw hole 15. After the connection, the limit rod 12 is used to limit the lifting structure of the workpiece at the lowest point of the hook hole of the hook 9. The limit rod 12 is installed After the installation is completed, the electric hoist 7 uses the lifting rope to drive the bearing pulley 8 to rise, so that the hook 9 lifts the workpiece. After the laser 6 is powered on, it emits infrared rays to the ground. During the emission, the electric push rod 3 is controlled. When the electric push rod 3 is powered on, the position of the mounting frame 4 can be adjusted. After the motor 403 is powered on, its output end can drive the mounting plate 5 to rotate inside the mounting groove 402. During the rotation of the mounting plate 5, the laser 6 is also driven to move, changing the irradiation angle of the laser 6. The size of the laser 6 irradiated on the ground can be expanded or reduced, so that the travel path of the crane trolley 1 and the range of the vertical drop point of the workpiece can be projected and displayed on the ground according to the size of the hoisted workpiece, thereby improving the anti-fall effect.
[0025] The above-mentioned specific embodiments are only several preferred embodiments of the present invention. Based on the technical solution of the present invention and the relevant inspiration of the above-mentioned embodiments, those skilled in the art can make various alternative improvements and combinations to the above-mentioned specific embodiments.
Claims
1. A crane with an anti-falling structure, characterized in that: The invention comprises a crane trolley frame (1) and an electric hoist (7), wherein the bottom of the crane trolley frame (1) is provided with the electric hoist (7), the bottom of the electric hoist (7) is connected to a bearing pulley (8) through a lifting rope, the bottom of the bearing pulley (8) is rotatably connected to a hook (9), an anti-hook plate (10) is rotatably installed at a hook hole of the hook (9), both ends of the anti-hook plate (10) are rotatably installed with a limit rod (12) through a main shaft (11), a bolt (14) is movably installed inside the limit rod (12), and both ends of the hook (9) are provided with screw holes (15) adapted to the bolt (14); Fixed rods (2) are installed on both sides of the crane trolley frame (1), electric push rods (3) are installed at both ends of the fixed rods (2), mounting frames (4) are installed at the ends of the fixed rods (2) and the electric push rods (3), a mounting plate (5) is installed inside the mounting frame (4), and a laser (6) is installed at the bottom of the mounting plate (5).
2. The crane with an anti-falling structure according to claim 1, characterized in that: The mounting frame (4) comprises a mounting rod (401) and a mounting groove (402); a mounting groove (402) adapted to the mounting plate (5) is provided inside the mounting rod (401); and the mounting plate (5) and the mounting groove (402) are rotatably connected.
3. The crane with an anti-falling structure according to claim 2, characterized in that: The mounting frame (4) further comprises a motor (403), wherein the motor (403) is mounted on the end of the mounting rod (401), and an output end of the motor (403) extends into the interior of the mounting groove (402) and is connected to the mounting plate (5).
4. The crane with an anti-falling structure according to claim 1, characterized in that: The screw holes (15) are distributed in a fan-shaped manner on the surfaces of both ends of the hook (9), and the interior of the screw holes (15) is provided with internal threads that are compatible with the bolts (14).
5. The crane with an anti-falling structure according to claim 1, characterized in that: A limiting groove (13) adapted to the bolt (14) is provided inside the limiting rod (12), and an arc groove is provided at the bottom of the limiting rod (12).
6. The crane with an anti-falling structure according to claim 1, characterized in that: The main shaft (11) is fixedly connected to the two ends of the anti-unhooking plate (10), a hole matching the main shaft (11) is provided inside the limiting rod (12), and the limiting rod (12) is rotatably connected to the main shaft (11).