Folding crane for constructional engineering

Abstract

The utility model discloses a folding crane for constructional engineering, and relates to the technical field of cranes. The folding crane for constructional engineering comprises a base, a lifting seat is movably arranged outside the base, a suspension arm is hinged to the top end of the lifting seat through a fixing seat, an extension arm is movably arranged at the front end of the suspension arm, and a threaded rod is movably installed in the lifting seat through a partition plate. In order to overcome the defect that the lifting height of the folding crane cannot meet the requirement of high-altitude operation, the lifting seat can be driven to move up and down through the rotation of the threaded rod, so that the height of the crane is adjusted, the operation range of the crane is expanded, and the requirement of high-altitude operation can be met.

Description

Technical Field

[0001] The utility model relates to the technical field of cranes, in particular to a foldable crane for construction engineering. Background Art

[0002] On construction sites, folding cranes are needed to lift, transport and install lightweight building materials such as foam boards, wooden boards and hollow bricks. Most folding cranes on the current market adjust the lifting height by rotating the angle of the boom. However, when building materials need to be transported to high-rise buildings, the length of the boom itself is limited. Although it can be rotated, it is still not enough to reach the required height, which limits the lifting height of the crane and cannot meet the needs of high-altitude operations.

[0003] Therefore, in order to solve the defect that the lifting height of the folding crane cannot meet the needs of high-altitude operations, it is necessary to propose a folding crane for construction engineering. Utility Model Content

[0004] The purpose of the utility model is to provide a foldable crane for construction engineering, which can drive the lifting seat to move up and down through the rotation of the threaded rod, thereby adjusting the height of the crane itself, expanding the operating range of the crane, and meeting the needs of high-altitude operations, so as to solve the problems raised in the above-mentioned background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A foldable crane for construction engineering, comprising a base, a lifting seat movably provided outside the base, a lifting arm hinged on the top of the lifting seat through a fixed seat, and an extension arm movably provided at the front end of the lifting arm;

[0007] A threaded rod is movably installed in the lifting seat through a partition, the threaded rod is threadedly connected to the base, a first bevel gear is fixedly connected to the top of the threaded rod, a motor is installed on the side end of the lifting seat, the motor is connected to a second bevel gear through a transmission shaft, and the second bevel gear is meshed with the first bevel gear.

[0008] Preferably, the fixing seat is provided with slots at equal intervals, a clamping shaft is installed at the lower end of the boom via a connecting rod, the connecting rod is hinged to the boom, and the clamping shaft is matched with the slots.

[0009] Preferably, slide grooves are symmetrically provided on both sides of the base, and sliding blocks are symmetrically welded on both sides of the inner wall of the lifting seat, and the sliding blocks are slidably connected to the slide grooves.

[0010] Preferably, a latch is detachably connected to the front end of the boom, adjustment holes matching the latch are equidistantly formed on the extension arm, and a conductor rod is welded to the front end of the extension arm.

[0011] Preferably, the boom is detachably mounted with a winch via a mounting plate, a lifting rope is wound inside the winch, and a lifting ring is fixedly connected to the end of the lifting rope.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0013] 1. The foldable crane for construction projects drives the first bevel gear to rotate through the motor, and the first bevel gear then drives the threaded rod to rotate through the second bevel gear, so that the threaded rod can drive the lifting seat to move up and down, so as to adjust the height of the crane itself, which significantly expands the operating range of the crane and enables it to adapt to the operating requirements of different heights, especially the construction of high-rise buildings;

[0014] 2. The folding crane used in this construction project can adjust the length of the extension arm by adjusting the hole and the pin, thereby increasing the working radius of the crane, thereby enabling the crane to reach higher and farther positions, further expanding the scope of operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the aerial work of the crane of the utility model;

[0016] Figure 2 This is a schematic diagram of the folding storage of the crane of the utility model;

[0017] Figure 3 For the utility model Figure 1 A magnified image;

[0018] Figure 4 This is a schematic diagram of the height adjustment principle of the crane of the utility model.

[0019] In the figure: 1. base; 11. slide; 2. lifting seat; 21. partition; 22. threaded rod; 23. first bevel gear; 24. second bevel gear; 25. motor; 26. slider; 3. fixed seat; 31. slot; 4. boom; 41. mounting plate; 42. connecting rod; 43. clamping shaft; 44. latch; 5. extension arm; 51. conductor rod; 52. adjustment hole; 6. winch; 61. lifting rope; 62. lifting ring. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] To solve the technical problem of how to fold the crane, please refer to Figure 1-Figure 2 , this embodiment provides the following technical solutions:

[0022] A foldable crane for construction engineering comprises a base 1, a lifting seat 2 is movably provided outside the base 1, a boom 4 is hinged on the top of the lifting seat 2 through a fixed seat 3, an extension arm 5 is movably provided at the front end of the boom 4, slots 31 are equidistantly provided on the fixed seat 3, a clamping shaft 43 is installed at the lower end of the boom 4 through a connecting rod 42, the connecting rod 42 is hinged to the boom 4, and the clamping shaft 43 is adapted to the slot 31.

[0023] Specifically, when operation is required, the boom 4 is rotated to the required angle, and then the connecting rod 42 is rotated to make the clamping shaft 43 snap into the corresponding clamping groove 31 to complete the fixation of the crane. When operation is not required, the boom 4 is rotated upward, and the clamping shaft 43 is taken out of the clamping groove 31, and then the boom 4 is rotated downward until the boom 4 is in contact with the base 1, and the crane is folded to facilitate transportation and storage and reduce occupied space.

[0024] To solve the technical problem of how to lift lightweight building materials with a crane, please refer to Figure 1 , this embodiment provides the following technical solutions:

[0025] The boom 4 is detachably mounted with a hoist 6 via a mounting plate 41 . A lifting rope 61 is wound inside the hoist 6 . A lifting ring 62 is fixedly connected to the end of the lifting rope 61 .

[0026] A conductor rod 51 is welded to the front end of the extension arm 5 .

[0027] Specifically, the winch 6 is installed on the mounting plate 41, which can be installed with bolts or other common fasteners. Then, the winch 6 is started, the hoisting rope 61 wound inside it is released, and the hoisting rope 61 is passed around the wire rod 51 and dropped vertically, and then the building materials to be lifted are hooked up using the lifting ring 62.

[0028] To solve the technical problem of how to expand the working range of cranes, please refer to Figure 3-Figure 4 , this embodiment provides the following technical solutions:

[0029] A threaded rod 22 is movably installed in the lifting seat 2 through the partition 21. The threaded rod 22 is threadedly connected to the base 1. A first bevel gear 23 is fixedly connected to the top of the threaded rod 22. A motor 25 is installed on the side end of the lifting seat 2. The motor 25 is connected to the second bevel gear 24 through a transmission shaft. The second bevel gear 24 is meshed with the first bevel gear 23.

[0030] Slide grooves 11 are symmetrically provided on both sides of the base 1 , and sliders 26 are symmetrically welded on both sides of the inner wall of the lifting seat 2 , and the sliders 26 are slidably connected to the slide grooves 11 .

[0031] A latch 44 is detachably connected to the front end of the suspension arm 4 , and adjustment holes 52 matching the latch 44 are equidistantly formed on the extension arm 5 .

[0032] Specifically, when the height of the crane needs to be adjusted: start the motor 25, the motor 25 drives the second bevel gear 24 to rotate through the transmission shaft, the second bevel gear 24 then drives the first bevel gear 23 meshing therewith to rotate, the first bevel gear 23 then drives the threaded rod 22 fixedly connected therewith to rotate, so that the threaded rod 22 can move the lifting seat 2 up and down, at this time the slider 26 slides in the slide groove 11, ensuring the stability and smoothness of the lifting seat 2 when moving up and down, reducing the risk of failure caused by mechanical friction or jamming;

[0033] When the length of the extension arm 5 needs to be adjusted: pull the extension arm 5 outward or push it inward to adjust the length of the extension arm 5 outside the boom 4. After the adjustment is completed, insert the pin 44 into the corresponding adjustment hole 52 to complete the fixation of the boom 4 and the extension arm 5 to expand the working range.

[0034] Working principle: When using the folding crane for construction projects, first rotate the boom 4 upward until it reaches the required angle, then rotate the connecting rod 42 so that the card shaft 43 is stuck in the corresponding card slot 31, and then start the motor 25. The motor 25 drives the first bevel gear 23 to rotate, and the first bevel gear 23 drives the second bevel gear 24 meshing with it to rotate, and the second bevel gear 24 drives the threaded rod 22 fixedly connected to it to rotate, so that the threaded rod 22 can drive the lifting seat 2 to move up and down to adjust the overall height of the crane. After the adjustment is completed, pull the extension arm 5 outward to adjust the length of the extension arm 5 outside the boom 4 until it is adjusted to the required length, and finally use the pin 44 to fix the boom 4 and the extension arm 5.

[0035] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0036] 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. A foldable crane for construction engineering, comprising a base (1), characterized in that: A lifting seat (2) is movably provided outside the base (1); a lifting arm (4) is hingedly connected to the top of the lifting seat (2) via a fixed seat (3); and an extension arm (5) is movably provided at the front end of the lifting arm (4); A threaded rod (22) is movably mounted in the lifting seat (2) via a partition (21); the threaded rod (22) is threadedly connected to the base (1); a first bevel gear (23) is fixedly connected to the top of the threaded rod (22); a motor (25) is mounted on the side end of the lifting seat (2); the motor (25) is connected to a second bevel gear (24) via a transmission shaft; the second bevel gear (24) is meshed with the first bevel gear (23).

2. A foldable crane for construction engineering according to claim 1, characterized in that: The fixing seat (3) is provided with slots (31) at equal intervals, and a clamping shaft (43) is installed at the lower end of the suspension arm (4) via a connecting rod (42). The connecting rod (42) is hinged to the suspension arm (4), and the clamping shaft (43) is adapted to the slots (31).

3. A foldable crane for construction engineering according to claim 1, characterized in that: The base (1) has sliding grooves (11) symmetrically formed on both sides, and the inner wall of the lifting seat (2) has sliding blocks (26) symmetrically welded on both sides, and the sliding blocks (26) are slidably connected to the sliding grooves (11).

4. A foldable crane for construction engineering according to claim 1, characterized in that: The front end of the suspension arm (4) is detachably connected to a latch pin (44), the extension arm (5) is provided with adjustment holes (52) matched with the latch pin (44) at equal intervals, and the front end of the extension arm (5) is welded with a conductor rod (51).

5. A foldable crane for construction engineering according to claim 1, characterized in that: The boom (4) is detachably mounted with a hoist (6) via a mounting plate (41); a hoisting rope (61) is wound inside the hoist (6); and a hoisting ring (62) is fixedly connected to the end of the hoisting rope (61).

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