Lifting appliance for lifting shafts

Abstract

The utility model discloses a lifting appliance for lifting shafts, which comprises a sliding structure comprising a pulley and a lifting component for lifting the pulley; the connecting structure comprises a first connecting assembly, a second connecting assembly and a third connecting assembly, the first connecting assembly is connected with the pulley, the second connecting assembly is connected with a workpiece shaft, one end of the third connecting assembly is connected with the first connecting assembly, and the other end of the third connecting assembly is connected with the second connecting assembly. The connecting structure is located below the sliding structure and used for fixing the workpiece shaft to the sliding structure. By arranging a fixed pulley capable of freely rotating, a first connecting structure connected with the pulley, a second connecting structure used for binding the workpiece shaft, and a third connecting structure connected with the first connecting structure and the second connecting structure, the horizontal angle posture of the shaft to be measured is changed into the vertical posture. And the to-be-detected shaft can be conveniently installed on the vertical detection instrument.

Description

Technical Field

[0001] The utility model relates to the technical field of parts hoisting, in particular to a hoisting device for hoisting shafts. Background Art

[0002] Axles are usually placed horizontally for transportation and storage, but when tested on a vertical measuring instrument, the shaft to be tested needs to be installed vertically on the top of the instrument to eliminate the detection error caused by deformation caused by its own weight when installed horizontally; however, in order to inspect such shafts, it is not allowed to directly lift one end of the shaft to be tested with a crane from a horizontal position to a vertical position, because oblique lifting violates the crane operating specifications and is unsafe. Therefore, most of the time, manual lifting is usually done during work, which is troublesome and laborious. Now it is urgent to design a new type of lifting device that can change the horizontal angle posture of the shaft to be tested to a vertical posture during the process of lifting the shaft to be tested, so as to facilitate the installation of the shaft to be tested on the vertical testing instrument.

[0003] The information disclosed in this background technology section is only intended to increase the understanding of the overall background of the present invention, and should not be regarded as acknowledging or suggesting in any form that the information constitutes the prior art already known to a person skilled in the art. Utility Model Content

[0004] The utility model aims to provide a lifting device for lifting shafts, which can change the angle posture of the shaft to be measured during the lifting process.

[0005] To achieve the above object, the utility model provides a lifting device for lifting shafts, comprising:

[0006] A sliding structure including a pulley and a lifting assembly for lifting the pulley;

[0007] The connecting structure includes a first connecting component, a second connecting component and a third connecting component, wherein the first connecting component is connected to the pulley, the second connecting component is connected to the workpiece shaft, one end of the third connecting component is connected to the first connecting component, and the other end is connected to the second connecting component, wherein the connecting structure is located below the sliding structure and is used to fix the workpiece shaft on the sliding structure.

[0008] In one or more embodiments, the second connecting component is a chemical fiber sling ring, and there are two chemical fiber sling rings, which are respectively located at two ends of the workpiece shaft. The positions of the two chemical fiber sling rings are symmetrical and are used to fix the workpiece shaft.

[0009] In one or more embodiments, the third connecting component is a hook, and there are two of the hooks, each of which is connected to two of the chemical fiber sling rings at the bottom.

[0010] In one or more embodiments, the first connecting component is a chemical fiber sling, the middle part of the first connecting component is slidably connected to the pulley, and both ends are respectively connected to the third connecting component. By sliding the first connecting component on the pulley, the relative height of the third connecting component can be changed, thereby changing the angle between the workpiece axis and the ground.

[0011] In one or more embodiments, the lifting assembly includes a lifting ring, which is located at the top of the lifting assembly, and the center of the lifting ring is perpendicular to the axis of the pulley.

[0012] In one or more embodiments, a load-bearing frame is provided between the lifting ring and the pulley for connecting the pulley and the lifting ring, and a pin is provided between the load-bearing frame and the pulley so that the pulley and the load-bearing frame are rotatably connected.

[0013] In one or more embodiments, the pulley includes a pair of conical wheels facing in opposite directions and arranged at tops opposite to each other, and the chemical fiber sling is flat and wound around the pin of the pulley.

[0014] In one or more embodiments, the third connecting component is fixed to the first connecting component.

[0015] In one or more embodiments, the third connecting component is fixed to the second connecting component.

[0016] In one or more embodiments, the hook is a circular structure with a notch, and the notch is less than 90°, and the two notches of the hook are directed obliquely upward and are arranged in back to back.

[0017] The utility model provides a hoisting device for lifting shafts, which is provided with a fixed pulley that can rotate freely, a first connecting structure connected to the pulley, a second connecting structure for binding the workpiece shaft, and a third connecting structure connecting the first connecting structure and the second connecting structure. The first connecting structure slides on the pulley to change the height at both ends of the first connecting structure, thereby changing the height at both ends of the workpiece shaft, thereby changing the angle between the workpiece shaft and the ground, and then lifting the shaft to be measured, changing the horizontal angle posture of the shaft to be measured to a vertical posture, so that the shaft to be measured can be installed on a vertical testing instrument conveniently. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of a hanger for hoisting shafts provided in an embodiment of the utility model.

[0019] Figure 2 It is another structural schematic diagram of a hanger for hoisting shafts provided in an embodiment of the utility model.

[0020] Figure 3 It is a detailed structural schematic diagram of a hanger for hoisting shafts provided in an embodiment of the utility model.

[0021] Figure 4 It is another detailed structural schematic diagram of a hanger for hoisting shafts provided in an embodiment of the utility model.

[0022] Description of main reference numerals:

[0023] 1-sliding structure, 11-pulley, 12-hoisting assembly, 121-lifting ring, 122-load-bearing frame, 123-pin shaft, 2-connecting structure, 21-first connecting assembly, 22-second connecting assembly, 23-third connecting assembly. DETAILED DESCRIPTION

[0024] The specific implementation modes of the present invention are described in detail below in conjunction with the accompanying drawings, but it should be understood that the protection scope of the present invention is not limited by the specific implementation modes.

[0025] Unless explicitly stated otherwise, throughout the specification and claims, the term “comprise” or variations such as “include” or “comprising”, etc., will be understood to include the stated elements or components but not to exclude other elements or components.

[0026] A lifting device for lifting shafts, such as Figures 1 to 4 As shown, including:

[0027] The sliding structure 1 comprises a pulley 11 and a hoisting assembly 12 for hoisting the pulley 11;

[0028] The connecting structure 2 includes a first connecting component 21, a second connecting component 22 and a third connecting component 23, wherein the first connecting component 21 is connected to the pulley 11, the second connecting component 22 is connected to the workpiece shaft, one end of the third connecting component 23 is connected to the first connecting component 21, and the other end is connected to the second connecting component 22, wherein the connecting structure 2 is located below the sliding structure 1, and is used to fix the workpiece shaft on the sliding structure 1.

[0029] Specifically, the second connecting component 22 is used to fix the workpiece axis, and when it is lifted by the sling, the workpiece axis is perpendicular to the direction of gravity. There are multiple second connecting components 22, which are symmetrically arranged at the heads of the two ends of the workpiece axis. The lifting component 12 is located at the top of the pulley 11, and is used to lift the sling and fix it on other components. No matter what posture the pulley 11 slides to, the angle remains unchanged, so the force remains unchanged. During the lifting process, since the angle formed by the first connecting components 21 at both ends of the pulley 11 is basically unchanged, the force on the pulley 11 is almost unchanged during the process of the lifting axis from flat to vertical. Since the angle formed by the first connecting component 21 and the pulley 11 is symmetrical with the pulley 11 as the symmetry axis, during the lifting process, the pulling force at both ends of the pulley 11 is equal, and the sling as a whole is only subjected to downward gravity, which will not cause the workpiece axis to swing during the lifting process, causing danger.

[0030] As an optional embodiment, the second connecting component 22 is a chemical fiber sling ring. There are two chemical fiber sling rings, which are respectively located at two ends of the workpiece shaft. The positions of the two chemical fiber sling rings are symmetrical and are used to fix the workpiece shaft.

[0031] Specifically, the chemical fiber sling ring firmly binds and fixes the workpiece shaft, and the chemical fiber material increases the friction force to prevent the workpiece shaft from sliding during the lifting process. The second connecting component 22 forms a ring structure on the workpiece shaft to facilitate the connection of the third connecting component 23. The spacing between the two chemical fiber sling rings can be freely adjusted, so that the second connecting component 22 can adapt to workpiece shafts of different lengths and thicknesses.

[0032] As an optional implementation, the third connecting component 23 is a hook, and there are two of the hooks, each of which is connected to two of the chemical fiber sling rings at the bottom.

[0033] Specifically, the bottom end of the hook is connected to the chemical fiber sling ring, and the top end is connected to the chemical fiber sling.

[0034] As an optional embodiment, the first connecting component 21 is a chemical fiber sling, the middle part of the first connecting component 21 is slidably connected to the pulley 11, and both ends are respectively connected to the third connecting component 23. By sliding the first connecting component 21 on the pulley 11, the relative height of the third connecting component 23 can be changed, thereby changing the angle between the workpiece axis and the ground.

[0035] Specifically, by sliding the first connecting component 21 on the pulley 11, the length of the first connecting component 21 at both ends of the pulley 11 can be changed, thereby changing the relative height of the third connecting component 23, thereby changing the angle between the workpiece axis and the ground. The middle part of the first connecting component 21 refers to the first connecting component 21 at both ends connected to the third connecting component 23, and the remaining part can slide freely on the pulley 11 to adjust the length of the first connecting component 21 at both ends of the pulley 11. The part that can slide on the pulley 11 is the middle part of the first connecting component 21. The angle formed by the first connecting component 21 and the pulley 11 depends on the spacing of the second connecting component 22, and the first connecting component 21 can adapt to shafts of different lengths.

[0036] As an optional implementation, the hoisting assembly 12 includes a lifting ring 121 , and the lifting ring 121 is located at the top of the hoisting assembly 12 , and the center of the lifting ring 121 is perpendicular to the axis of the pulley 11 .

[0037] Specifically, vertical means that the line connecting the axis in the vertical direction and the center of the lifting ring 121 coincides with the direction of gravity. The lifting ring 121 and the axis are in the direction of gravity, and the center of gravity of the sliding structure 1 and the axis of the lifting ring 121 are in the direction of gravity, which is not easy to break. It is only stressed in the vertical direction. The lifting ring 121 is located at the top of the lifting assembly 12 to facilitate the lifting of the lifting device on other components.

[0038] As an optional embodiment, a load-bearing frame 122 is provided between the lifting ring 121 and the pulley 11 for connecting the pulley 11 and the lifting ring 121, and a pin 123 is provided between the load-bearing frame 122 and the pulley 11 so that the pulley 11 and the load-bearing frame 122 can be rotatably connected.

[0039] Specifically, the direction in which the load-bearing frame 122 is arranged is parallel to the line connecting the center of the lifting ring 121 and the axis of the pulley 11, that is, the sliding assembly is an axisymmetric structure, and the axis of symmetry coincides with the direction of gravity. When a heavy object is loaded at the bottom, the different components of the sling are only subjected to vertical gravity, and there is no stress in different directions. The overall structural reliability of the sling is high during hoisting, and it is not easy to break when hoisting heavy objects.

[0040] As an optional embodiment, the pulley 11 includes a pair of conical wheels facing in opposite directions and arranged at tops opposite to each other, and the chemical fiber sling is flat and wound around the pin 123 of the pulley 11.

[0041] Specifically, the middle part of the first connecting component 21 is wound around the pulley 11 to increase friction and use the deadweight of the hoisted workpiece shaft to prevent the workpiece shaft from coming off the pulley 11. Compared with the conventional groove, the conical wheel is lighter and forms an inclined slope structure, which increases the area where the flat sling can be wound, and is less likely to cause the workpiece shaft to come off the pulley 11 than the groove.

[0042] As an optional implementation, the third connecting component 23 is fixed on the first connecting component 21 .

[0043] Specifically, no other structure is fixed on the top of the second connecting component 22 connected to the workpiece shaft, which is more convenient when loading the second connecting component 22 onto the workpiece shaft.

[0044] As an optional implementation, the third connecting component 23 is fixed on the second connecting component 22 .

[0045] As an optional embodiment, the hook is a circular structure with a notch, and the notch is smaller than 90°, and the two notches of the hook are directed obliquely upward and are arranged back to back.

[0046] Specifically, the directions of the notches on the two hooks are opposite and face obliquely upward. The position where the notches of the two hooks are connected to the bottom of the first connecting component 21 is the edge of the notches of the two hooks. Since the notches of the hooks face obliquely upward, the chemical fiber sling ring will not fall off the hook during the process of the workpiece axis from being laid flat to being vertical.

[0047] By adopting the above technical solution, a freely rotatable fixed pulley, a first connecting structure connected to the pulley, a second connecting structure for binding the workpiece shaft, and a third connecting structure connecting the first connecting structure and the second connecting structure are provided. By sliding the first connecting structure on the pulley, the height at both ends of the first connecting structure is changed, and then the height at both ends of the workpiece shaft is changed, thereby changing the angle between the workpiece shaft and the ground, and then lifting the shaft to be measured, changing the horizontal angle posture of the shaft to be measured to a vertical posture, so that the shaft to be measured can be installed on a vertical testing instrument conveniently.

[0048] The foregoing description of specific exemplary embodiments of the utility model is for the purpose of illustration and illustration. These descriptions are not intended to limit the utility model to the precise form disclosed, and it is clear that many changes and variations can be made based on the above teachings. The purpose of selecting and describing the exemplary embodiments is to explain the specific principles of the utility model and its practical application, so that those skilled in the art can realize and utilize various different exemplary embodiments of the utility model and various different options and changes. The scope of the utility model is intended to be defined by the claims and their equivalents.

Claims

1. A lifting device for lifting shafts, characterized in that: include: A sliding structure including a pulley and a lifting assembly for lifting the pulley; The connecting structure includes a first connecting component, a second connecting component and a third connecting component, wherein the first connecting component is connected to the pulley, the second connecting component is connected to the workpiece shaft, one end of the third connecting component is connected to the first connecting component, and the other end is connected to the second connecting component, wherein the connecting structure is located below the sliding structure and is used to fix the workpiece shaft on the sliding structure.

2. A lifting device for lifting shafts as claimed in claim 1, characterized in that: The second connecting component is a chemical fiber sling ring. There are two chemical fiber sling rings, which are respectively located at two ends of the workpiece shaft. The positions of the two chemical fiber sling rings are symmetrical and are used to fix the workpiece shaft.

3. A lifting device for lifting shafts as claimed in claim 2, characterized in that: The third connecting component is a hook, and there are two of the hooks, and the bottoms of the hooks are respectively connected to two of the chemical fiber sling rings.

4. A lifting device for lifting shafts as claimed in claim 3, characterized in that: The first connecting component is a chemical fiber sling, the middle part of the first connecting component is slidably connected to the pulley, and both ends are respectively connected to the third connecting component. By sliding the first connecting component on the pulley, the relative height of the third connecting component can be changed, thereby changing the angle between the workpiece axis and the ground.

5. A lifting device for lifting shafts as claimed in claim 4, characterized in that: The hoisting assembly comprises a hoisting ring, which is located at the top of the hoisting assembly, and the center of the hoisting ring is perpendicular to the axis of the pulley.

6. A lifting device for lifting shafts as claimed in claim 5, characterized in that: A load-bearing frame is arranged between the lifting ring and the pulley for connecting the pulley and the lifting ring, and a pin is arranged between the load-bearing frame and the pulley so that the pulley and the load-bearing frame are rotatably connected.

7. The lifting device for lifting shafts according to claim 6, characterized in that: The pulley comprises a pair of conical wheels facing in opposite directions and arranged at tops opposite to each other. The chemical fiber sling is flat and wound around the pin shaft of the pulley.

8. A lifting device for lifting shafts as claimed in claim 7, characterized in that: The third connecting component is fixed on the first connecting component.

9. A lifting device for lifting shafts as claimed in claim 1, characterized in that: The third connecting component is fixed on the second connecting component.

10. A lifting device for lifting shafts as claimed in claim 8, characterized in that: The hook is a circular structure with a notch, and the notch is less than 90 degrees. The two notches of the hook are directed obliquely upward and are arranged in back to back.

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