Folding crane

Abstract

The utility model provides a folding crane which comprises a base, a main beam which is obliquely arranged is connected to the base, the main beam is rotationally connected with one end of a lifting beam, a guide roller is installed at the other end of the lifting beam, an electric crane main machine is further installed at one end of the lifting beam, and the electric crane main machine is connected with the lifting beam. A steel wire rope of the electric crane main machine bypasses the guide roller to be connected with a lifting hook, the middle of the main beam is rotationally connected with one end of the supporting beam, the other end of the supporting beam is detachably connected with the adjusting block through a connecting shaft, a guide rail is installed on the lifting beam, and the adjusting block is slidably connected to the guide rail. An adjusting block is arranged on the base, at least two first fastening screws are arranged on the adjusting block in a threaded mode, a lengthened leg is horizontally connected to the base in a sliding mode, a self-locking type universal wheel is installed at the end of the lengthened leg, a second fastening screw is connected to the base in a threaded mode, a supporting block is connected to the base through a switching structure, and a universal wheel is installed on the supporting block. And the middle part of the main beam is connected with an elastic binding rope.

Description

Technical Field

[0001] This utility model belongs to the field of mechanical technology and relates to a folding crane. Background Technology

[0002] A crane is a mechanical device used for lifting and moving heavy objects, widely used in construction sites, ports, warehouses, and other situations requiring material handling. It uses tools such as wire ropes, chains, or slings to move goods from one location to another, greatly improving work efficiency and safety. Although existing folding cranes allow the lifting beam to be folded and stored, securing the beam after storage is inconvenient. Therefore, designing a folding crane is essential. Summary of the Invention

[0003] The purpose of this invention is to address the aforementioned problems in existing technologies by proposing a folding crane.

[0004] The objective of this utility model can be achieved through the following technical solution: A folding crane, comprising a base, characterized in that a main beam arranged at an inclination is connected to the base, the main beam and a lifting beam are rotatably connected at one end, a guide roller is installed at the other end of the lifting beam, an electric crane host is also installed at one end of the lifting beam, the wire rope of the electric crane host passes around the guide roller and is connected to a hook, the middle part of the main beam and a support beam are rotatably connected at one end, the other end of the support beam is detachably connected to the support beam via a connecting shaft and an adjusting block, a guide rail is installed on the lifting beam, the adjusting block is slidably connected to the guide rail, at least two fastening screws are threaded on the adjusting block, an extension leg is horizontally slidably connected to the base, a self-locking universal wheel is installed at the end of the extension leg, a fastening screw is threaded on the base, a support block is connected to the base via a switching structure, a universal wheel is installed on the support block, an elastic binding rope is connected to the middle part of the main beam, the end of the elastic binding rope has multiple connecting holes, and a mushroom-shaped fixing nail that mates with the connecting holes is also fixed to the middle part of the main beam.

[0005] The switching structure includes a guide block and a switching rod. The guide block is fixed on the base, and the switching rod is horizontally movably connected to the guide block. The guide block includes a square locking groove and a circular guide hole. The switching rod includes a square locking block and a cylindrical shaft. The square locking block cooperates with the square locking groove, and the cylindrical shaft cooperates with the circular guide hole. The cylindrical shaft also has a backing plate, and a spring is provided between the backing plate and the guide block. The square locking block and the support block are fixedly connected.

[0006] The support block also has an anti-slip pad.

[0007] The guide rail also has limit heads at both ends.

[0008] The lifting beam also has a U-shaped restraint that works in conjunction with the elastic binding rope.

[0009] Compared with existing technologies, this folding crane has the following advantages:

[0010] In this invention, the lifting beam can be easily folded downwards by disassembling the connecting shaft; then, the lifting beam, support beam and main beam are tightly bound together with elastic ropes, and the extended legs are retracted into the base, thereby facilitating the retraction of the crane and achieving convenient operation. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the planar structure of this utility model;

[0012] Figure 2 This is an exploded view of the removed portion of this utility model;

[0013] Figure 3 This is a schematic diagram of the planar structure of the U-shaped limiting member in this utility model;

[0014] In the diagram: 1. Base; 2. Fastening screw 2; 3. Extended leg; 4. Self-locking caster wheel; 5. Guide roller; 6. Guide rail; 7. Adjusting block; 8. Fastening screw 1; 9. Electric crane main unit; 9a. Wire rope; 9b. Hook; 10. Lifting beam; 11. Connecting shaft; 12. Support beam; 13. Mushroom-shaped fixing nail; 14. Elastic binding rope; 14a. Connecting hole; 15. Main beam; 16. Support block; 17. Caster wheel; 18. Guide block; 18a. Square locking groove; 18b. Circular guide hole; 19. Switching rod; 19a. Square locking block; 19b. Cylindrical shaft; 20. Spring; 21. Abutment piece; 22. U-shaped limiting component; 23. Limiting head; 24. Anti-slip pad. Detailed Implementation

[0015] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0016] like Figures 1-3As shown, this folding crane includes a base 1, on which an inclined main beam 15 is connected. The main beam 15 and a lifting beam 10 are rotatably connected at one end. A guide roller 5 is installed at the other end of the lifting beam 10. An electric crane host 9 is also installed at one end of the lifting beam 10. In this embodiment, the electric crane host 9 adopts an existing structure. The wire rope 9a of the electric crane host 9 passes around the guide roller 5 and is connected to a hook 9b. The middle of the main beam 15 and one end of the support beam 12 are rotatably connected. The other end of the support beam 12 is detachably connected to an adjusting block 7 via a connecting shaft 11. A guide rail 6 is installed on the lifting beam 10. The guide rail 6 also has limit heads 23 at both ends. The adjusting block 7 is slidably connected to the guide rail 6. The adjusting block 7 has at least two fastening screws 8. With this structure, the tilt angle of the lifting beam 10 can be adjusted by the cooperation of the adjusting block 7 and the guide rail 6. An extension leg 3 is slidably connected to the base 1. A self-locking universal joint is installed at the end of the extension leg 3. The base 1 has a threaded fastening screw 2 connected to the wheel 4. A support block 16 is connected to the base 1 via a switching mechanism. A caster wheel 17 is mounted on the support block 16, which also has an anti-slip pad 24. Using this structure, during lifting operations, the extension leg 3 is pulled out, locking the self-locking caster wheel 4. Simultaneously, the switching mechanism allows the caster wheel 17 to detach from the ground, causing the support block 16 to rest against the ground. This prevents accidental crane malfunctions during lifting operations. The main beam 15 is connected to an elastic binding rope 14 in the middle. The end of the elastic binding rope 14 has multiple connecting holes 14a. The main beam 15 is also fixed with a mushroom-shaped fixing nail 13 that mates with the connecting holes 14a. The lifting beam 10 is also equipped with a U-shaped restraint 22 that mates with the elastic binding rope 14. With this structure, the elastic binding rope 14 tightly binds the lifting beam 10, the support beam 12 and the main beam 15 together with the cooperation of the mushroom-shaped fixing nail 13 and the U-shaped restraint 22.

[0017] The switching structure includes a guide block 18 and a switching rod 19. The guide block 18 is fixed on the base 1, and the switching rod 19 is horizontally movably connected to the guide block 18. The guide block 18 includes a square locking groove 18a and a circular guide hole 18b. The switching rod 19 includes a square locking block 19a and a cylindrical shaft 19b. The square locking block 19a cooperates with the square locking groove 18a, and the cylindrical shaft 19b cooperates with the circular guide hole 18b. The cylindrical shaft 19b also has a stop... The abutment piece 21 and the guide block 18 are connected by a spring 20. The square locking block 19a and the support block 16 are fixedly connected. With this structure, the square locking block 19a is disengaged from the square locking groove 18a by supporting the outward support block 16. The support block 16 is rotated 180 degrees so that the support block 16 or the caster wheel 17 can contact the ground. After being released, the square locking block 19a can automatically lock into the square locking groove 18a under the elastic force of the spring 20.

[0018] In this utility model, by disassembling the connecting shaft 11, the lifting beam 10 can be easily folded downwards; then, the lifting beam 10, the support beam 12 and the main beam 15 are tightly bound together with the elastic binding rope 14, and the extended leg 3 is retracted into the base 1, thereby facilitating the retraction of the crane and realizing the convenience of operation.

[0019] All of the above components are general standard parts or components known to those skilled in the art. Their structure and principles can be learned by those skilled in the art through technical manuals or conventional experimental methods.

[0020] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A folding crane, comprising a base (1), characterized in that, The base (1) is connected to an inclined main beam (15). The main beam (15) and the lifting beam (10) are rotatably connected at one end. The other end of the lifting beam (10) is equipped with a guide roller (5). The lifting beam (10) is also equipped with an electric crane host (9). The wire rope (9a) of the electric crane host (9) passes around the guide roller (5) and is connected to a hook (9b). The middle part of the main beam (15) is rotatably connected to one end of the support beam (12). The other end of the support beam (12) is detachably connected to the connecting shaft (11) and the adjusting block (7). The lifting beam (10) is equipped with a guide rail (6). The adjusting block (7) is slidably connected to the guide rail (6). The adjustment block (7) has at least two fastening screws (8) threaded on it. The base (1) is horizontally slidably connected to an extension leg (3). The end of the extension leg (3) is equipped with a self-locking universal wheel (4). The base (1) is threadedly connected to a fastening screw (2). The base (1) is connected to a support block (16) through a switching structure. The support block (16) is equipped with a universal wheel (17). The main beam (15) is connected to an elastic rope (14) in the middle. The end of the elastic rope (14) has multiple connecting holes (14a). The main beam (15) is also fixed with a mushroom-shaped fixing nail (13) that matches the connecting hole (14a).

2. The folding crane according to claim 1, characterized in that, The switching structure includes a guide block (18) and a switching rod (19). The guide block (18) is fixed on the base (1). The switching rod (19) is horizontally movably connected to the guide block (18). The guide block (18) includes a square locking groove (18a) and a circular guide hole (18b). The switching rod (19) includes a square locking block (19a) and a cylindrical shaft (19b). The square locking block (19a) cooperates with the square locking groove (18a). The cylindrical shaft (19b) cooperates with the circular guide hole (18b). The cylindrical shaft (19b) also has a backing piece (21). A spring (20) is provided between the backing piece (21) and the guide block (18). The square locking block (19a) and the support block (16) are fixedly connected.

3. A folding crane according to claim 1, characterized in that, The support block (16) also has an anti-slip pad (24).

4. A folding crane according to claim 1, characterized in that, The guide rail (6) also has limiting heads (23) at both ends.

5. A folding crane according to claim 1, characterized in that, The lifting beam (10) also has a U-shaped restraint (22) that works in conjunction with the elastic binding rope (14).

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