Head mechanism of a non-destructive hydraulic pipe removal device

Abstract

The present invention relates to the technical field of pipe dismantling machines, and discloses a head mechanism of a non-destructive hydraulic pipe dismantling device, including a driving end, an external pressure pipe is arranged on the right side of the driving end, a plurality of hydraulic pipes are symmetrically arranged on the left side of the driving end, a hydraulic plug is arranged inside the left side of the hydraulic pipe, a push rod is interactively connected to the left end of the hydraulic plug, an intermediate wheel is arranged on the outside of the push rod, a clamping sleeve is arranged on the outside of the intermediate wheel, a pressure bead is arranged inside the left side of the clamping sleeve, and a positioning sleeve is arranged on the inner coaxial line of the clamping sleeve. The head mechanism of the non-destructive hydraulic pipe dismantling device moves to the left along the inclined groove on the upper surface of the inclined surface block through the pressure bead, so that the inclined surface block pushes the extrusion block inward to extrude the pipe fitting to shrink the mouth, so that a gap is generated at the threaded interface, and at the same time, the inclined groove causes the inclined surface block to drive the positioning sleeve to rotate to loosen the threaded interface, and micro-rotates while shrinking the mouth to loosen the screw mouth, so that the pipe fitting can be disassembled without loss.

Description

Technical Field

[0001] The invention relates to the technical field of pipe dismantling machines, in particular to a head mechanism of a non-destructive hydraulic pipe dismantling device. Background Art

[0002] The hydraulic pipe dismantling machine is a pipe dismantling equipment that has been put into use in recent years in response to the concept of energy conservation and emission reduction. It mainly uses the strong pressure generated by the hydraulic cylinder to clamp the threaded metal pipe for non-destructive dismantling, so that the dismantled metal pipe can retain its complete functions as much as possible and can be directly reused.

[0003] Existing pipe dismantling machines generally use single-cylinder hydraulics to roughly clamp the pipe fittings through the chuck. Even if the pipe fittings can be removed, they are easily deformed due to uneven radial stress on the pipe fittings, especially for pipe fittings that have been severely rusted at the threaded joints. It is almost impossible to dismantle the pipe without damage. Summary of the invention

[0004] (I) Technical problems to be solved: In accordance with the requirements of the development of intelligent manufacturing and in view of the deficiencies in the prior art, the present invention provides a head mechanism of a non-destructive hydraulic pipe dismantling device, which can non-destructively dismantle pipe fittings with severely corroded interfaces, thereby solving the problems in the above-mentioned background technology.

[0005] (ii) Technical solution: In order to achieve the purpose of non-destructive disassembly of pipe fittings with severe interface corrosion, the present invention provides the following technical solution: a head mechanism of a non-destructive hydraulic pipe disassembly device, comprising a driving end, an external pressure pipe is arranged on the right side of the driving end, a plurality of hydraulic pipes are symmetrically arranged on the left side of the driving end, a hydraulic plug is arranged inside the left side of the hydraulic pipe, a push rod is movably connected to the left end of the hydraulic plug, an intermediate wheel is arranged on the outer side of the push rod, a clamping sleeve is arranged on the outer side of the intermediate wheel, a pressure bead is arranged inside the left side of the clamping sleeve, a positioning sleeve is coaxially arranged inside the clamping sleeve, a plurality of push columns are evenly arranged on the positioning sleeve, a ramp block is fixedly connected to the outer side of the push column, and an extrusion block is movably connected to the inner side of the push column.

[0006] Preferably, the driving end is provided with corresponding electrical equipment, and the corresponding hydraulic pipe is provided with a movable groove for adjusting its position.

[0007] Preferably, the push rod is arranged in the horizontal groove, and its left end is movably connected to the middle wheel disc surface, and its connection position can be adjusted as needed.

[0008] Preferably, the intermediate wheel is arranged on a bracket fixedly connected to the driving end.

[0009] Preferably, the inner wall of the clamping sleeve is provided with a rack adapted to the intermediate wheel, and the left inner wall thereof is provided with a fixing bracket connected to the pressure bead to keep their relative positions fixed.

[0010] Preferably, the positioning sleeve is movably connected to the driving end via a bearing and maintains a fixed axial position.

[0011] Preferably, the bottom of the slope block is matched with the outer wall of the positioning sleeve, and its outer surface is a slope that is higher on the left and lower on the right, and an inclined groove with uniform depth is opened on the slope.

[0012] Preferably, the extrusion block can be replaced and adjusted according to actual needs.

[0013] (III) Beneficial effects: Compared with the prior art, the present invention provides a head mechanism of a non-destructive hydraulic pipe removal device, which has the following beneficial effects:

[0014] 1. The head mechanism of the non-destructive hydraulic pipe removal device, the hydraulic pipe pushes the push rod to drive the intermediate wheel to rotate, and the clamping sleeve can be adjusted to move along the pipe direction. Compared with direct use of hydraulic push, it is easier to control the accuracy, and the pressure size is determined by the number of rack teeth to effectively protect the pipe fittings.

[0015] 2. The head mechanism of the non-destructive hydraulic pipe disassembly device moves to the left along the inclined groove on the upper surface of the inclined block through the pressure bead, so that the inclined block pushes the extrusion block inward to extrude the pipe fitting to shrink the mouth, so that a gap is generated at the threaded interface. At the same time, the inclined groove causes the inclined block to drive the push column to rotate so that the threaded interface rotates and loosens, and while shrinking the mouth, it is slightly rotated to loosen the screw mouth, so that the pipe fitting can be disassembled without damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the main structure of the present invention;

[0017] Figure 2 It is a schematic diagram of the axial cross section of the extrusion block position of the present invention;

[0018] Figure 3 It is a schematic diagram of the extrusion action structure of the present invention;

[0019] Figure 4 For the present invention Figure 1 The enlarged schematic diagram of part A in the middle;

[0020] Figure 5 It is a schematic diagram of the structure of the ramp block of the present invention.

[0021] In the figure: 1. driving end; 2. external pressure pipe; 3. hydraulic pipe; 4. hydraulic plug; 5. push rod; 6. intermediate wheel; 7. clamping sleeve; 8. pressure bead; 9. positioning sleeve; 10. pushing column; 11. inclined block; 12. extrusion block. DETAILED DESCRIPTION

[0022] 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 described embodiments 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 creative work are within the scope of protection of the present invention.

[0023] See also Figure 1-5 A head mechanism of a non-destructive hydraulic pipe removal device comprises a driving end 1, an external pressure pipe 2 is arranged on the right side of the driving end 1, a plurality of hydraulic pipes 3 are symmetrically arranged on the left side of the driving end 1, a hydraulic plug 4 is arranged inside the left side of the hydraulic pipe 3, a push rod 5 is movably connected to the left end of the hydraulic plug 4, an intermediate wheel 6 is arranged on the outer side of the push rod 5, a clamping sleeve 7 is arranged on the outer side of the intermediate wheel 6, a pressure bead 8 is arranged inside the left side of the clamping sleeve 7, a positioning sleeve 9 is coaxially arranged inside the clamping sleeve 7, a plurality of pushing columns 10 are evenly arranged radially on the positioning sleeve 9, a ramp block 11 is fixedly connected to the outer side of the pushing column 10, and an extrusion block 12 is movably connected to the inner side of the pushing column 10.

[0024] The driving end 1 is provided with corresponding electrical equipment, and the hydraulic pipe 3 is provided with a movable groove for adjusting its position.

[0025] Among them, the push rod 5 is arranged in the horizontal groove, and its left end is movably connected to the disk surface of the intermediate wheel 6, and its connection position can be adjusted according to needs.

[0026] The intermediate wheel 6 is arranged on a bracket fixedly connected to the driving end 1 .

[0027] The inner wall of the clamping sleeve 7 is provided with a rack adapted to the intermediate wheel 6, and the inner wall of the left part thereof is provided with a fixed bracket connected to the pressure bead 8 to keep their relative position fixed.

[0028] The positioning sleeve 9 is movably connected to the driving end 1 through a bearing and keeps the axial position fixed.

[0029] The bottom of the inclined surface block 11 is matched with the outer wall of the positioning sleeve 9, and the outer surface thereof is an inclined surface which is higher on the left and lower on the right, and an inclined groove with uniform depth is opened on the inclined surface.

[0030] The extrusion block 12 can be replaced and adjusted according to actual needs.

[0031] Working principle: The head mechanism of the non-destructive hydraulic pipe removal device is provided with an external pressure pipe 2 on the right side of the driving end 1, and a plurality of hydraulic pipes 3 are symmetrically provided on the left side of the driving end 1. The driving end 1 is provided with corresponding electrical equipment, and a movable groove for adjusting the position thereof is provided corresponding to the hydraulic pipe 3. When in use, the pipe fitting with an external thread is passed through the driving end 1, and the external pressure pipe 2 presses the pipe fitting for preliminary fixation. A hydraulic plug 4 is provided inside the left side of the hydraulic pipe 3, and a push rod 5 is movably connected to the left end of the hydraulic plug 4. An intermediate wheel 6 is provided on the outer side of the push rod 5, and a rack is provided on the inner wall of the clamping sleeve 7 to match the intermediate wheel 6. A fixed bracket is provided on the inner wall of the left part thereof to connect with the pressure bead 8 and keep its relative position fixed. The hydraulic pipe 3 pushes the push rod 5 to drive the intermediate wheel 6 to rotate, and the clamping sleeve 7 can be adjusted to move along the pipe direction. Compared with direct hydraulic push, gear transmission is easier to control the accuracy, and the pressure is determined by the number of teeth on the rack to effectively protect the pipe fittings.

[0032] The head mechanism of the non-destructive hydraulic pipe removal device is provided with a pressure bead 8 inside the left side of the clamping sleeve 7, a positioning sleeve 9 is coaxially arranged inside the clamping sleeve 7, a plurality of push columns 10 are evenly arranged radially on the positioning sleeve 9, a ramp block 11 is fixedly connected to the outside of the push column 10, and an extrusion block 12 is movably connected to the inside of the push column 10, the bottom of the ramp block 11 is adapted to the outer wall of the positioning sleeve 9, and its outer surface is a ramp with a higher left and a lower right, and an inclined groove with uniform depth is opened on the ramp. When the clamping sleeve 7 moves to the left, the pressure bead 8 moves to the left along the ramp groove on the upper surface of the ramp block 11, so that the ramp block 11 pushes the extrusion block 12 inward to extrude the pipe fitting to shrink it, so that a gap is generated at the threaded interface, and at the same time, the inclined groove causes the ramp block 11 to drive the push column 10 to rotate so that the threaded interface is rotated and loosened, which is convenient for subsequent pipe removal.

[0033] 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 head mechanism of a non-destructive hydraulic pipe removal device, comprising a driving end (1), characterized in that: An external pressure pipe (2) is arranged on the right side of the driving end (1), and a plurality of hydraulic pipes (3) are symmetrically arranged on the left side of the driving end (1). A hydraulic plug (4) is arranged inside the left side of the hydraulic pipe (3), and a push rod (5) is movably connected to the left end of the hydraulic plug (4). An intermediate wheel (6) is arranged on the outer side of the push rod (5), and a clamping sleeve (7) is arranged on the outer side of the intermediate wheel (6). A pressure bead (8) is arranged inside the left side of the clamping sleeve (7), and a positioning sleeve (9) is coaxially arranged inside the clamping sleeve (7). A plurality of push columns (10) are evenly arranged radially on the positioning sleeve (9), and a ramp block (11) is fixedly connected to the outer side of the push column (10), and an extrusion block (12) is movably connected to the inner side of the push column (10).

2. The head mechanism of the non-destructive hydraulic pipe removal device according to claim 1 is characterized in that: The driving end (1) is provided with corresponding electrical equipment, and a movable groove for adjusting the position of the hydraulic pipe 3 is provided therein.

3. The head mechanism of the non-destructive hydraulic pipe removal device according to claim 1 is characterized in that: The push rod (5) is arranged in the horizontal groove, and its left end is movably connected to the disk of the intermediate wheel (6), and its connection position can be adjusted according to needs.

4. The head mechanism of the non-destructive hydraulic pipe removal device according to claim 1 is characterized in that: The intermediate wheel (6) is arranged on a bracket fixedly connected to the driving end (1).

5. The head mechanism of the non-destructive hydraulic pipe removal device according to claim 1 is characterized in that: The inner wall of the clamping sleeve (7) is provided with a rack adapted to the intermediate wheel (6), and the inner wall of the left part thereof is provided with a fixing bracket connected to the pressure bead (8) to keep their relative positions fixed.

6. The head mechanism of the non-destructive hydraulic pipe removal device according to claim 1 is characterized in that: The positioning sleeve (9) is movably connected to the driving end (1) via a bearing and maintains a fixed axial position.

7. The head mechanism of the non-destructive hydraulic pipe removal device according to claim 1 is characterized in that: The bottom of the inclined surface block (11) is matched with the outer wall of the positioning sleeve (9), and its outer surface is an inclined surface with a higher left side and a lower right side, and an inclined groove with a uniform depth is opened on the inclined surface.

8. The head mechanism of the non-destructive hydraulic pipe removal device according to claim 1 is characterized in that: The extrusion block (12) can be replaced and adjusted according to actual needs.

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