Top collision prevention structure of electric hoist

Abstract

The utility model relates to the technical field of electric hoist protection structures, and discloses a top collision prevention structure of an electric hoist. The anti-top-collision structure of the electric hoist comprises a mounting frame, a hoist box body is mounted below the mounting frame, a rotating shaft rod is mounted below the inner wall of the hoist box body, the outer surface of the rotating shaft rod is connected with a steel wire rope body, and the outer surface of the steel wire rope body is connected with a movable rope guide device; a center hole is formed in the center of the movable rope guide device, and a welding block is connected to one side of the movable rope guide device. The collision block, the movable rope guide device, the flexible steel wire rope and the stroke limit switch structure are matched for use, so that the practicability of the electric hoist is conveniently improved, the collision block effectively avoids collision between the electric hoist structures, the service life of the electric hoist anti-collision structure is conveniently prolonged, and the service life of the electric hoist is prolonged. And meanwhile, the flexible steel wire rope is prevented from being deformed and blocked in the up-and-down movement process.

Description

Technical Field

[0001] The utility model relates to the technical field of electric hoist protection structures, in particular to an electric hoist anti-top collision structure. Background Art

[0002] As a standard lifting tool, electric hoist is widely used on the job site. Electric hoist is a commonly used lifting equipment with the characteristics of small size, light weight, simple operation and easy use. It is used in industrial and mining enterprises, warehouses, docks and other places.

[0003] The existing referenceable Chinese utility model patent with announcement number CN217972295U discloses an anti-collision electric hoist. The utility model includes a housing, an electric hoist body, a movable pulley, and a hook. An elastic buffer mechanism is provided on the top of the movable pulley. An upper buffer plate is fixed to the bottom of the electric hoist body. A lower buffer plate is provided below the upper buffer plate. Limiting mechanisms for limiting the position of the wire rope are provided on both the front and rear sides of the lower buffer plate. A laser receiver is installed at one end of the bottom of the upper buffer plate. A laser distance sensor matching the laser receiver is installed at one end of the top of the lower buffer plate. The laser distance sensor is connected to the PLC controller of the electric hoist body through a wire. An anti-collision buffer mechanism is provided in the middle of the bottom of the upper buffer plate and the middle of the top of the lower buffer plate. A guide mechanism is installed between the two ends of the bottom of the upper buffer plate and the two ends of the top of the lower buffer plate. The electric hoist body and the hook can be well protected, with good buffering effect and stability, reducing the probability of the wire rope swinging during the buffering process and improving safety performance.

[0004] Although the above-mentioned anti-top-collision electric hoist solves the problem of hook rotation and swinging, which easily causes cargo to fall off and poses a great safety hazard, the effective safety distance between the electric hoist limiter and the electric hoist box is too short, and the operator needs a long time to cut off the power supply, causing the hook device to collide with the electric hoist box and the drum device, resulting in box deformation and reducer rupture, and even causing other safety accidents. It is relatively difficult to repair the damaged rope guide. Utility Model Content

[0005] 1. Technical issues to be resolved

[0006] In view of the shortcomings of the prior art, the utility model provides an electric hoist anti-top collision structure, which has the advantages of effectively avoiding box deformation and reducer breakage, improving the safety performance of the electric hoist, and facilitating maintenance operations, thereby solving the above-mentioned technical problems.

[0007] (II) Technical solution

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: the electric hoist anti-top collision structure comprises a mounting frame, a hoist box is installed below the mounting frame, a rotating shaft rod is installed below the inner wall of the hoist box, the outer surface of the rotating shaft rod is connected to a wire rope body, the outer surface of the wire rope body is connected to a movable guide rope device, a center hole is installed at the center position of the movable guide rope device, a welding block is connected to one side of the movable guide rope device, a support seat is installed on one side of the welding block, a jig is installed on one side of the support seat, a positioning shaft is installed on the inner side of the jig, a flexible wire rope is connected to the outer surface of the positioning shaft, one end of the flexible wire rope is connected to a travel limit switch, and a collision block is installed on one side of the wire rope body.

[0009] As the preferred technical solution of the utility model, mounting components are installed on both sides of the mounting frame, a connecting frame is connected below the mounting components, a hoist box is installed below the connecting frame; and a motor structure is installed below the inner wall of the hoist box.

[0010] As a preferred technical solution of the utility model, a motor is installed on the outer surface of one end of the hoist box, and a rotating shaft rod is connected to one side of the motor; the motor drives the rotating shaft rod to rotate for use in conjunction.

[0011] As the preferred technical solution of the utility model, a base is installed on one side of the outer surface of the hoist box, a connecting rod is installed on one side of the base, and a travel limit switch is installed in parallel on one side of the connecting rod; the travel limit switch and the flexible steel wire rope are connected and matched for use.

[0012] As a preferred technical solution of the utility model, the outer surface of the connecting rod is connected with a flexible steel wire rope, and the base and the hoist box are installed by bolts; the bolts are used to install the base on one side of the hoist box for use.

[0013] As the preferred technical solution of the utility model, a hook is installed below the hoist box, a shell is installed on both sides above the hook, and a collision block is installed above the shell; the collision frame is placed to prevent collision between electric hoist structures.

[0014] As a preferred technical solution of the utility model, the inner wall of the center hole is connected with a steel wire rope body, and the movable rope guide device is connected above the collision block; the center hole cooperates with the movable rope guide device to be installed and used.

[0015] Compared with the prior art, the utility model provides an electric hoist anti-top collision structure, which has the following beneficial effects:

[0016] The utility model facilitates increasing the practicality of the electric hoist through the coordinated use of a collision block, a movable guide rope device, a flexible steel wire rope, and a travel limit switch structure. The collision block effectively avoids collisions between the electric hoist structures, thereby increasing the service life of the electric hoist's anti-top collision structure. At the same time, the flexible steel wire rope will not deform or get stuck during the up and down movement. The flexibility of the steel wire rope facilitates adjustment of the distance between the hook and the hoist rope drum. There is a certain distance between the travel limit switch and the movable guide rope device, and the distance ensures that the contactor can be completely disconnected and powered off. The actual size of the safety distance can be determined according to the specific location on site, thereby avoiding causing other safety accidents. At the same time, it is convenient for the electric hoist to repair and use, and the use effect of the electric hoist's anti-top collision structure is convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is an overall schematic diagram of the utility model;

[0018] Figure 2 This is a schematic diagram of the collision block of the utility model;

[0019] Figure 3 This is a schematic diagram of the movable guide rope device of the utility model;

[0020] Figure 4 It is a schematic diagram of the hook of the utility model.

[0021] Among them: 1. Mounting frame; 11. Mounting assembly; 12. Connecting frame; 2. Hoist box; 21. Motor; 22. Rotating shaft; 23. Wire rope body; 3. Movable rope guide device; 31. Center hole; 32. Welding block; 33. Support seat; 34. Frame; 35. Positioning shaft; 4. Flexible wire rope; 5. Base; 6. Connecting rod; 7. Travel limit switch; 8. Collision block; 9. Hook; 91. Shell. DETAILED DESCRIPTION

[0022] The following is a further detailed description of the implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0023] In the description of the present invention, unless otherwise specified, "multiple" means two or more than two; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0024] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] Combined with Figure 1-4 In the present embodiment, the anti-top collision structure of the electric hoist comprises a mounting frame 1, a hoist box 2 is mounted below the mounting frame 1, a rotating shaft rod 22 is mounted below the inner wall of the hoist box 2, the outer surface of the rotating shaft rod 22 is connected to a steel wire rope body 23, the outer surface of the steel wire rope body 23 is connected to a movable guide rope device 3, a center hole 31 is mounted at the center position of the movable guide rope device 3, a welding block 32 is connected to one side of the movable guide rope device 3, a support seat 33 is mounted on one side of the welding block 32, a mold frame 34 is mounted on one side of the support seat 33, a positioning shaft 35 is mounted on the inner side of the mold frame 34, a flexible steel wire rope 4 is connected to the outer surface of the positioning shaft 35, one end of the flexible steel wire rope 4 is connected to a travel limit switch 7, and a collision block 8 is mounted on one side of the steel wire rope body 23.

[0026] Specifically, the bottom of the mounting frame 1 is connected to the hoist box 2, and one side of the hoist box 2 is connected to the base 5 with bolts. The base 5 is used with a travel limit switch 7. The travel limit switch 7 and the flexible steel wire rope 4 are connected and matched for use, and the flexible steel wire rope 4 adopts a 2mm flexible steel wire rope 4 structure. The other end of the flexible steel wire rope 4 is connected through a movable guide rope device 3 to achieve the flexible steel wire rope 4, the travel limit switch 7, and the wire rope body 23 forming an integral structure, which is convenient for actual deployment according to the on-site location, and is convenient for use with the electric hoist's anti-top collision structure.

[0027] Mounting components 11 are installed on both sides of the mounting frame 1 , a connecting frame 12 is connected below the mounting components 11 , and a hoist box 2 is installed below the connecting frame 12 .

[0028] A motor 21 is installed on the outer surface of one end of the hoist housing 2 , and a rotating shaft rod 22 is connected to one side of the motor 21 .

[0029] Specifically, by connecting the two sides of the mounting frame 1 with the mounting assembly 11, the mounting assembly 11 carries the connecting frame 12 below, and the connecting frame 12 connects the hoist box 2 and the mounting frame 1 for use, which is convenient for installing the hoist box 2 above the equipment structure for use, and convenient for hanging the hoist hook 9 structure to achieve the use of lifting and moving objects.

[0030] A base 5 is installed on one side of the outer surface of the hoist housing 2, a connecting rod 6 is installed on one side of the base 5, and a travel limit switch 7 is installed in parallel on one side of the connecting rod 6.

[0031] The outer surface of the connecting rod 6 is connected with a flexible steel wire rope 4, and the base 5 and the hoist box 2 are installed by bolts.

[0032] A hook 9 is installed below the hoist housing 2 , a shell 91 is installed on both sides above the hook 9 , and a collision block 8 is installed above the shell 91 .

[0033] The inner wall of the central hole 31 is connected to the wire rope body 23 , and the movable rope guide device 3 is connected above the collision block 8 .

[0034] Specifically, one side of the hoist box 2 is connected to the motor 21, the motor 21 and the rotating shaft rod 22 are connected and matched for use, the outer surface of the rotating shaft rod 22 is connected to the wire rope body 23 for use, and the wire rope body 23 is used to connect the hook 9 and the electric hoist structure, which is convenient for lifting and transporting objects. The electric hoist anti-top collision structure is used in conjunction with each other, the two sides of the hook 9 are connected to the shell 91, and the collision block 8 structure is correspondingly installed above the shell 91. The collision block 8 moves up and down and left and right with the hook 9 structure, effectively avoiding collision damage between the hook 9 structure and the electric hoist structure, which is convenient for improving the service life of the electric hoist structure and convenient for the use of the electric hoist anti-top collision structure.

[0035] Working principle: The connecting frame 12 is installed below the mounting frame 1 through the mounting assembly 11, and the bottom of the connecting frame 12 is connected to the hoist box 2. A motor 21 is installed on one side of the hoist box 2. The motor 21 drives the rotating shaft rod 22 to rotate. The outer surface of the rotating shaft rod 22 and the wire rope body 23 are logically connected. One end of the wire rope body 23 is connected to the hook 9 through the shell 91. The hook 9 is convenient for hanging objects for use in coordination, so as to achieve the purpose of lifting and transporting objects. Then, a collision block 8 is installed above the shell 91 of the hook 9. The travel limit switch 7 and the movable guide rope device 3 in the collision device form a whole, and a certain distance is maintained between the two. Since the movable guide rope device 3 has a certain vertical downward gravity, the travel limit switch 7 is tightened through the wire rope body 23, so that the switch The driving connecting rod 6 is in a vertical tension state. When the electric hoist is lifting a heavy object at a uniform speed, the pulley structure of the hook 9 rises with it. When it rises to a certain height, the collision block 8 welded on the housing 91 of the hook 9 collides with the movable rope guide device 3, and the collision block 8 pushes the movable rope guide device 3 to continue to rise. At this time, the 2mm flexible steel wire rope 4 is in a relaxed state and is not subject to any gravity. The driving connecting rod 6 of the travel limit switch 7 automatically returns to move upward. At this time, the contactor of the travel limit switch 7 is automatically disconnected and powered off, and the rising contactor of the electric hoist is powered off, that is, the rising movement of the electric hoist stops, so as to avoid collision between the housing 91 and the upper structure of the electric hoist. The collision block 8 prevents damage to the upper structure of the electric hoist, thereby increasing the working use of the electric hoist.

[0036] Then, the wire rope body 23 crosses the center hole 31, and the center hole 31 is installed at the center position of the movable guide rope device 3, so that the movable guide rope device 3 is installed in the electric hoist structure for use. The base 5 is installed on the outside of the hoist box 2 with bolts for use. One side of the base 5 is used with a positioning shaft 35 and a travel limit switch 7. The travel limit switch 7 and the positioning shaft 35 are connected and matched for use to operate the positioning shaft 35. The outer surface of the positioning shaft 35 is matched and connected with the flexible wire rope 4. Both ends of the flexible wire rope 4 are connected to the outer surfaces of the positioning shaft 35 and the connecting rod 6. When the electric hoist is lowered, the collision block 8 on the pulley block of the hook 9 moves downward and leaves the movable guide rope device 3. Due to the decrease in the deadweight of the movable guide rope device 3, the 2mm flexible wire rope 4 moves downward, causing the travel limit switch 7 to drive the connecting rod 6 to move and be in a tensioned state, and the travel limit switch 7 is in a closed state.

[0037] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An electric hoist anti-collision structure, comprising a mounting frame (1), a hoist housing (2) is mounted below the mounting frame (1), a rotating shaft rod (22) is mounted below the inner wall of the hoist housing (2), a steel wire rope body (23) is connected to the outer surface of the rotating shaft rod (22), and a movable rope guide device (3) is connected to the outer surface of the steel wire rope body (23), wherein: A center hole (31) is installed at the center position of the movable rope guide device (3); a welding block (32) is connected to one side of the movable rope guide device (3); a support seat (33) is installed on one side of the welding block (32); a mold frame (34) is installed on one side of the support seat (33); a positioning shaft (35) is installed on the inner side of the mold frame (34); a flexible steel wire rope (4) is connected to the outer surface of the positioning shaft (35); one end of the flexible steel wire rope (4) is connected to a travel limit switch (7); and a collision block (8) is installed on one side of the steel wire rope body (23).

2. The electric hoist anti-top collision structure according to claim 1, characterized in that: Mounting components (11) are installed on both sides of the mounting frame (1), a connecting frame (12) is connected below the mounting component (11), and a hoist box (2) is installed below the connecting frame (12).

3. The electric hoist anti-top collision structure according to claim 1, characterized in that: A motor (21) is installed on the outer surface of one end of the hoist housing (2), and a rotating shaft rod (22) is connected to one side of the motor (21).

4. The electric hoist anti-top collision structure according to claim 1, characterized in that: A base (5) is installed on one side of the outer surface of the hoist housing (2), a connecting rod (6) is installed on one side of the base (5), and a travel limit switch (7) is installed in parallel on one side of the connecting rod (6).

5. The electric hoist anti-top collision structure according to claim 4, characterized in that: The outer surface of the connecting rod (6) is connected with a flexible steel wire rope (4), and the base (5) and the hoist box (2) are installed by bolts.

6. The electric hoist anti-top collision structure according to claim 1, characterized in that: A hook (9) is installed below the hoist housing (2), a shell (91) is installed on both sides above the hook (9), and a collision block (8) is installed above the shell (91).

7. The electric hoist anti-top collision structure according to claim 1, characterized in that: The inner wall of the central hole (31) is connected to a steel wire rope body (23), and the movable rope guide device (3) is connected above the collision block (8).

Images