Small crane

Abstract

A small crane relates to the technical field of cranes, and comprises a support table, an adjusting mechanism and a hoisting mechanism, the adjusting mechanism is fixedly installed on the front side of the top of the supporting table and comprises a hydraulic cylinder set, a top frame is fixedly welded to the top end of the hydraulic cylinder set, and two sets of auxiliary fixed pulleys and a set of main fixed pulleys are arranged on the inner side of the top frame. The hoisting mechanism is fixedly installed on the rear side of the top of the supporting table and comprises a support, a driving motor is fixedly installed on the outer wall of the support, the output end of the driving motor is fixedly sleeved with a roller shaft, a steel cable is wound around the roller shaft, and the steel cable is sequentially arranged on an auxiliary fixed pulley and a main fixed pulley on the inner side of the top frame in a transmission and sleeving mode from left to right. The outer end of the steel rope is fixedly connected with a lifting hook. According to the small crane, the height of the top end can be adjusted through the adjusting mechanism, workpieces on the bottom side are efficiently hoisted in cooperation with all assemblies in the hoisting mechanism, meanwhile, the overall size is small, and efficient hoisting and hoisting operation can be conveniently conducted indoors.

Description

Technical Field

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

[0002] A crane refers to a multi-action lifting machinery that can vertically lift and horizontally move heavy objects within a certain range. Generally, cranes are large in size and use steel cables as a medium to lift and hoist workpieces.

[0003] The patent application with patent application number 202320897637.X discloses a small crane, comprising a fixed box, a crawler moving machine is provided at the bottom end of the fixed box, a crane is provided at the top end of the fixed box, a sliding assembly is provided in the inner cavity of the fixed box, two extension rods are slidably inserted on the front and rear sides of the fixed box, four of the extension rods are fixedly connected to the sliding assembly, and a cylinder is fixedly inserted at the end of the four extension rods away from the fixed box, and an adjustment assembly is provided at the output end of each of the cylinders. The bottom end of each of the adjustment assemblies is provided with a support foot, and an extension plate is slidably inserted on the left and right sides of the inner cavity of each of the support feet. This small crane solves the problem that the support foot area of small cranes in the prior art cannot be adjusted, and when used in soft ground, sleepers need to be placed at the bottom end of the support foot, which is very inconvenient to operate during use.

[0004] This small crane is an improvement made to adapt to soft soil. In existing indoor hoisting operations, space is limited. Direct upward hoisting requires a large amount of space and is also large in size, making it less practical. Therefore, the present invention proposes a small crane that can solve the above problems. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a small crane which can solve the problem that the existing devices are difficult to efficiently lift and hoist workpieces indoors, in view of the deficiencies of the existing technology.

[0006] The technical solution adopted by the utility model to solve its technical problems is: a small crane, including a support platform, an adjusting mechanism and a lifting mechanism; the adjusting mechanism is fixedly installed on the front side of the top of the support platform, including a hydraulic cylinder group, the top of the hydraulic cylinder group is fixedly welded with a top frame, and the inner side of the top frame is provided with two groups of auxiliary fixed pulleys and a group of main fixed pulleys; the lifting mechanism is fixedly installed on the rear side of the top of the support platform, including a bracket, the outer wall of the bracket is fixedly installed with a driving motor, the output end of the driving motor is fixedly sleeved with a roller, and a steel cable is wound on the roller, the steel cable is sequentially driven from left to right and sleeved on the auxiliary fixed pulley and the main fixed pulley on the inner side of the top frame, and the outer end of the steel cable is fixedly connected with a hook.

[0007] Furthermore, universal wheel sets are fixedly installed at the four corners of the bottom of the support.

[0008] Furthermore, a U-shaped handrail is fixedly installed on the rear side of the support platform, and the U-shaped handrail is arranged in an inclined shape.

[0009] Furthermore, the top frame includes a rectangular empty frame on the bottom side, a support plate is provided on the top of the rectangular empty frame, the two sets of auxiliary fixed pulleys are respectively fixedly installed on the bottom of the left and right ends of the support plate, and the main fixed pulley is fixedly installed on the inner side of the rectangular empty frame.

[0010] Furthermore, the bracket includes a bottom plate fixedly mounted on the top of the support platform, support plates are provided on both sides of the top of the bottom plate, and rollers are fixedly mounted on the inner sides of the support plates through bearings.

[0011] Furthermore, the steel cable is a composite rope.

[0012] Furthermore, a threaded cable groove is provided on the outer wall of the roller shaft, and the steel cable is embedded in the threaded cable groove on the roller shaft.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] This small crane, through the arrangement of the support platform and the adjustment mechanism and the lifting mechanism thereon, can use the adjustment mechanism to adjust the top height, and then cooperate with the various components in the lifting mechanism to efficiently lift the workpiece on the bottom side. At the same time, the overall volume is small, which is convenient for efficient lifting operations indoors, solving the problem that existing devices are difficult to efficiently lift and hoist workpieces indoors. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic structural diagram of an embodiment of the present utility model;

[0016] Figure 2 for Figure 1 A schematic structural diagram of the hoisting mechanism of the illustrated embodiment;

[0017] Figure 3 for Figure 1 A schematic structural diagram of the adjustment mechanism of the illustrated embodiment;

[0018] Figure 4 for Figure 3 Schematic diagram of the enlarged structure at A in the middle;

[0019] Description of reference numerals in the figures:

[0020] 1. Support platform; 2. Adjustment mechanism; 21. Hydraulic cylinder assembly; 22. Top frame; 23. Auxiliary fixed pulley; 24. Main fixed pulley; 3. Lifting mechanism; 31. Bracket; 32. Drive motor; 33. Roller; 34. Steel cable; 35. Hook; 4. Universal wheel assembly; 5. U-shaped handrail. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] Reference Figures 1 to 4 A small crane comprises a support platform 1, an adjusting mechanism 2 and a lifting mechanism 3; the adjusting mechanism 2 is fixedly installed on the front side of the top of the support platform 1, including a hydraulic cylinder group 21, and a top frame 22 is fixedly welded to the top of the hydraulic cylinder group 21. Two groups of auxiliary fixed pulleys 23 and a group of main fixed pulleys 24 are provided on the inner side of the top frame 22; the lifting mechanism 3 is fixedly installed on the rear side of the top of the support platform 1, including a bracket 31, and a driving motor 32 is fixedly installed on the outer wall of the bracket 31. The output end of the driving motor 32 is fixedly sleeved with a roller shaft 33, and a steel cable 34 is wound on the roller shaft 33. The steel cable 34 is sequentially transmitted from left to right on the auxiliary fixed pulley 23 and the main fixed pulley 24 sleeved on the inner side of the top frame 22, and the outer end of the steel cable 34 is fixedly connected with a hook 35.

[0023] Among them, the small crane can adjust the top height by using the adjustment mechanism 2 through the setting of the support platform 1 and its top adjustment mechanism 2 and the lifting mechanism 3, and then cooperate with the various components in the lifting mechanism 3 to efficiently lift the workpiece on the bottom side. At the same time, the overall volume is small, which is convenient for efficient lifting operations indoors, solving the problem that existing devices are difficult to efficiently lift and hoist workpieces indoors.

[0024] In this embodiment, universal wheel sets 4 are fixedly installed at the four corners of the bottom of the support 1. The arrangement of the universal wheel sets 4 can ensure the flexible movement effect of the device.

[0025] In this embodiment, a U-shaped handrail 5 is fixedly installed on the rear side of the support 1. The U-shaped handrail 5 is arranged in an inclined shape. The arrangement of the U-shaped handrail 5 facilitates the movement of the device from the rear side.

[0026] In this embodiment, the top frame 22 includes a rectangular empty frame on the bottom side, and a support plate is provided on the top of the rectangular empty frame. The two sets of auxiliary fixed pulleys 23 are respectively fixedly installed on the bottom of the left and right ends of the support plate, and the main fixed pulley 24 is fixedly installed on the inner side of the rectangular empty frame; wherein, the setting of the auxiliary fixed pulley 23 and the main fixed pulley 24 facilitates the transmission of the set steel cable 34 from the top side to ensure the lifting effect.

[0027] In this embodiment, the bracket 31 includes a base plate fixedly mounted on the top of the support platform 1, support plates are provided on both sides of the top of the base plate, and a roller shaft 33 is fixedly mounted on the inner side of the support plate through a bearing; wherein, the structure of the bracket 31 is arranged to facilitate the outer drive motor 32 to drive the roller shaft 33 to rotate, thereby driving it to efficiently wind the steel cable 34, thereby achieving efficient lifting of the workpiece.

[0028] In this embodiment, the steel cable 34 is a composite rope; a threaded cable groove is provided on the outer wall of the roller shaft 33, and the steel cable 34 is embedded in the threaded cable groove on the roller shaft 33; wherein, the setting of the roller shaft 33 and the threaded cable groove thereon can ensure the stability of the steel cable 34 during lifting.

[0029] The working principle and usage process of the utility model are as follows: the user drives the device flexibly to the corresponding position in advance, then opens the adjustment mechanism 2 and pushes it upward to the corresponding height, and then starts the lifting mechanism 3 to wind and lift the steel cable 34 to ensure flexible lifting and hoisting effects.

[0030] The above shows and describes the basic principles, main features and advantages of the present invention. It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, from all perspectives, the embodiments should be regarded as illustrative and non-restrictive. The scope of protection of the present invention is defined by the appended claims rather than the above description.

Claims

1. A small crane, characterized by: It includes a support platform, an adjusting mechanism and a lifting mechanism; the adjusting mechanism is fixedly installed on the front side of the top of the support platform, including a hydraulic cylinder group, the top of the hydraulic cylinder group is fixedly welded with a top frame, and the inner side of the top frame is provided with two groups of auxiliary fixed pulleys and a group of main fixed pulleys; the lifting mechanism is fixedly installed on the rear side of the top of the support platform, including a bracket, the outer wall of the bracket is fixedly installed with a driving motor, the output end of the driving motor is fixedly sleeved with a roller, and a steel cable is wound on the roller, the steel cable is sequentially driven from left to right and sleeved on the auxiliary fixed pulley and the main fixed pulley on the inner side of the top frame, and the outer end of the steel cable is fixedly connected with a hook.

2. The small crane according to claim 1, characterized in that: Universal wheel sets are fixedly installed at the four corners of the bottom of the support platform.

3. The small crane according to claim 1 or 2, characterized in that: A U-shaped handrail is fixedly installed on the rear side of the support platform, and the U-shaped handrail is arranged in an inclined shape.

4. The small crane according to claim 1 or 2, characterized in that: The top frame includes a rectangular empty frame on the bottom side, a support plate is provided on the top of the rectangular empty frame, the two sets of auxiliary fixed pulleys are respectively fixedly installed on the bottom of the left and right ends of the support plate, and the main fixed pulley is fixedly installed on the inner side of the rectangular empty frame.

5. The small crane according to claim 1 or 2, characterized in that: The bracket includes a bottom plate fixedly mounted on the top of the support platform, support plates are provided on both sides of the top of the bottom plate, and rollers are fixedly mounted on the inner sides of the support plates through bearings.

6. The small crane according to claim 1 or 2, characterized in that: The steel cable is a composite rope.

7. The small crane according to claim 1 or 2, characterized in that: A threaded cable groove is provided on the outer wall of the roller shaft, and the steel cable is embedded in the threaded cable groove on the roller shaft.

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