Simple hoisting device for inner groove

Abstract

The utility model relates to a simple hoisting device for an inner groove, which is used for hoisting the whole part and vertically placing the part so as to realize the assembly of an inner groove type part. Comprising two semi-rings, two stand columns respectively welded and fixed with the two semi-rings, lifting bolts arranged at the upper ends of the stand columns, a positioning nut welded and fixed on one stand column, a positioning bolt for fixing the positions of the stand column I and the stand column II, a handle welded on the bolt, and a connecting bolt and a nut for connecting and fixing the two stand columns. After the devices are assembled and assembled together, the devices are put into the inner groove of the part, so that the hoisting assembly of the inner groove type part can be realized. The device is easy to manufacture, low in cost, stable in vertical hoisting and good in hoisting strength.

Description

Technical Field

[0001] The utility model belongs to the technical field of mechanical processing, and particularly relates to a simple lifting device for inner grooves, which can lift the whole part and place it vertically to realize the assembly of inner groove type parts. Background Art

[0002] Hydraulic cylinders are special parts for various engineering machinery, coal mining machinery, special vehicles and large machinery, and have a wide range of applications. As an important component of various machinery, the production and manufacturing of cylinders is of vital importance. Among the many cylinders, there is a two-stage cylinder component with an inner groove. The outer circle of this cylinder body is chrome-plated or laser-clad, with a finish of Ra0.4. The inner hole is processed with an inner groove, and the groove depth is generally within 6mm. This two-stage cylinder component will be installed as a whole in the outer cylinder body after the seal is installed. Therefore, the outer circle of the component cannot be clamped, and this cylinder needs to be assembled vertically. Therefore, according to the specific characteristics of the parts, a simple lifting device is designed to realize the lifting and assembly of such parts. Utility Model Content

[0003] The utility model aims to overcome the deficiencies in the prior art and provide an inner groove type simple hoisting device which can be used to smoothly hoist inner groove type secondary cylinder parts. The device is simple to manufacture and easy to use.

[0004] The technical solution of the utility model is achieved as follows: a simple lifting device for an inner groove, comprising two half rings, a column one and a column two respectively connected to the two half rings, a connecting bolt connecting the column one and the column two through a connecting nut, and two eye screws connected to the internal threads of the heads of the column one and the column two. There are two columns in total, one of which is provided with a bolt positioning hole φ (d+1) drilled on the column one, and a positioning nut is welded on the other column two, and a positioning bolt is connected between the bolt positioning hole φ (d+1) and the positioning nut.

[0005] The heads of the columns one and two are processed with internal threads for installing eye screws, and the internal threads are connected to the screw part of the eye screws. The bottoms of the columns one and two are processed with bevels, and the bevels are flat-welded on the upper plane of the semi-ring. U-shaped through holes D2+1 are processed at the center positions of the columns one and two, and the connecting bolts pass through the holes to connect with the connecting nuts.

[0006] A handle is fixed at one end of the positioning bolt. After adjusting the position of the device, the positioning bolt is tightened into the bolt positioning hole φ (d+1) on the column one through the positioning nut welded on the column two.

[0007] The half ring is designed according to the size of the inner groove of the part: the maximum outer circle is φ (D-0.5), the inner diameter is φD -30 -50 , thickness L1-0.2 -0.5 , the chord length is D3 / 4.

[0008] The positive effects of the technical solution of the utility model are as follows: through the lifting device, the lifting of the inner groove parts can be conveniently and quickly realized, the lifting is stable and vertical, and the lifting strength is good. The device is reasonably designed, simple to manufacture, low in cost, and easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 The utility model is a structural front view of a simple lifting device for an inner groove.

[0010] Figure 2 The utility model is a structural left view of a simple lifting device for an inner groove.

[0011] Figure 3 The utility model is a structural front view of a column 1 of a simple lifting device for an inner groove.

[0012] Figure 4 The utility model is a structural front view of a column 2 of a simple lifting device for an inner groove.

[0013] Figure 5 The utility model is a structural front view of a lifting eye screw of a simple lifting device for an inner groove.

[0014] Figure 6 The utility model is a structural front view of a handle of a simple lifting device for an inner groove.

[0015] Figure 7 The utility model is a cross-sectional view of a half ring of a simple lifting device for an inner groove.

[0016] Figure 8 The utility model is a structural front view of a half ring of a simple lifting device for an inner groove.

[0017] Fig. 9 The utility model is a structural front view of a simple lifting device for removing a lifting eye screw for an inner groove.

[0018] Fig.10 The utility model is a structural left view of a simple lifting device for removing a lifting eye screw in an inner groove.

[0019] Fig.11 The utility model is a structural top view of a simple lifting device for an inner groove for removing a lifting eye screw.

[0020] Among them: 1. Eyebolt GB825-88; 2. Column one; 3. Positioning bolt (GB / T5781-2000 hexagonal head full thread); 4. Positioning nut (GB / T41-2000 hexagonal nut); 5. Column two; 6. Handle; 7. Connecting bolt (GB / T5780-2000 hexagonal head bolt); 8. Half ring; 9. Nut (GB / T41-2000 hexagonal nut). DETAILED DESCRIPTION

[0021] like Figure 1 , 2 As shown, a simple lifting device for an inner groove of the utility model comprises two half rings 8, a column 1 2 and a column 2 5 respectively connected to the two half rings 8, a connecting bolt 7 connecting the column 1 2 and the column 2 5 through a connecting nut 9, and two eye screws 1 connected to the internal threads of the heads of the column 1 2 and the column 2 5. There are two columns in total, one of which is provided with a bolt positioning hole φ (d+1) drilled on the column 1 2, and a positioning nut 4 is welded on the other column 2 5, and a positioning bolt 3 is connected between the bolt positioning hole φ (d+1) and the positioning nut 4.

[0022] An internal thread for installing the eye screw 1 is processed on the head of the column 1 2 and the column 2 5, and the internal thread is connected to the screw part of the eye screw 1. An oblique angle is processed at the bottom of the column 1 2 and the column 2 5, and the oblique angle is flat-welded on the upper plane of the semi-ring 8; a U-shaped through hole D2+1 is processed at the center position of the column 1 2 and the column 2 5, and the connecting bolt 7 passes through the hole to connect with the connecting nut 9.

[0023] A handle 6 is fixed at one end of the positioning bolt 3. After adjusting the device position, the positioning bolt 3 is tightened into the bolt positioning hole φ (d+1) on the column 1 2 through the positioning nut 4 welded on the column 2 5.

[0024] like Figure 7 , 8 As shown, the half ring 8 is designed according to the size of the inner groove of the part: the maximum outer circle is φ (D-0.5), and the inner diameter is φD -30 -50 , thickness L1 -0.2 -0.5 The half ring 8 is made of common seamless steel pipe 27SiMn material. The outer circle, inner hole and thickness are first processed as required, the center of the half ring and the sawing line of the chord length are marked, and then it is sawed into two halves according to the chord length line, and the required line parts at the sharp corners of the half ring are removed.

[0025] like Figure 3 , 4As shown, the column 1 2 and column 2 5 are made of 45# material using suitable flat steel, a U-shaped through hole D2+1 is processed at the center of the column, one end is processed with an internal thread, connected to the eye screw 1, and the other end is processed with an angle, and after the position of the half ring 8 is determined, it is flat welded on the plane of the half ring 8. There are 2 columns in total, one of which is equipped with a bolt positioning hole φ (d+1) drilled on the column 1 2, and a positioning nut 4 is welded on the other column 2 5.

[0026] like Figure 1 , 9 As shown, the positioning bolt 3 adopts a GB / T5781-2000 hexagonal head full-thread bolt, which is purchased with a suitable length, and a round bar is horizontally welded on the nut of the positioning bolt 3 as a handle 6.

[0027] like Figure 1 , 2 As shown, a simple lifting device is used for the inner groove. The processed half ring 8 is placed in the part groove, and the two columns 2 and 5 are connected with connecting bolts 7 and then fixed with nuts 9. The nuts 9 are not tightened first. The two connected columns 2 and 5 are placed on the half ring 8 according to the center line of the half ring 8, and the connection position between the column and the half ring 8 is adjusted through the U-shaped hole. The welding position is marked on the half ring 8 and spot welded, and the column 1 2 and the column 2 5 are fastened with nuts 9. The column 1 2 and the column 2 5 are firmly welded to the half ring 8; the positioning bolt 3 is rotated forward through the nut 4 and enters the positioning hole of the column 1 2, and the welding position of the positioning nut 4 on the column 5 is adjusted, and the positioning nut 4 is spot welded and welded firmly. Install the eyebolts 1 on the upper ends of the columns 1 and 2, install the two half rings 8 into the grooves of the parts, adjust the positions of the half rings 8 so that the two half rings 8 of the device are tightly pressed in the grooves, tighten the column 1 with the positioning bolts 3, pass the lifting rope through the two eyebolts 1, and lift the parts vertically.

[0028] The described simple lifting device for the inner groove, the half ring 8 is made of 27SiMn material and tempered HB260-300, the column 1 2 and the column 2 5 are made of 45# flat steel and tempered HB240-280, the handle 6 is made of small round steel, any material can be selected, and the remaining positioning bolts 3, connecting bolts 7, nuts 4, 9 can be purchased as standard parts.

Claims

1. A simple lifting device for an inner groove, comprising two half rings (8), a first column (2) and a second column (5) respectively connected to the two half rings (8), a connecting bolt (7) connecting the first column (2) and the second column (5) through a connecting nut (9), and two eye screws (1) connected to the internal threads of the heads of the first column (2) and the second column (5), characterized in that: There are two columns in total, one of which is a column 1 (2) drilled with a bolt positioning hole φ (d+1), and the other column 2 (5) is welded with a positioning nut (4), and a positioning bolt (3) is connected between the bolt positioning hole φ (d+1) and the positioning nut (4).

2. A simple lifting device for inner groove according to claim 1, characterized in that: The heads of the first column (2) and the second column (5) are processed with internal threads for mounting the eyebolt (1), and the internal threads are connected to the screw portion of the eyebolt (1). The bottoms of the first column (2) and the second column (5) are processed with bevels, and the bevels are flat-welded on the upper plane of the half ring (8). The center positions of the first column (2) and the second column (5) are processed with U-shaped through holes D2+1, and the connecting bolts (7) pass through the holes and are connected to the connecting nuts (9).

3. A simple lifting device for inner groove according to claim 1, characterized in that: A handle (6) is fixed at one end of the positioning bolt (3). After the device position is adjusted, the positioning bolt (3) is tightened into the bolt positioning hole φ (d+1) on the column one (2) through the positioning nut (4) welded on the column two (5).

4. A simple lifting device for inner groove according to claim 1, characterized in that: The half ring (8) is designed according to the size of the inner groove of the part: the maximum outer circle is φ (D-0.5), the inner diameter is φD -30 -50 , thickness L1 -0.2 -0.5 , the chord length is D3 / 4.

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