Pressing sleeve type workpiece dismounting device and using method

Abstract

The invention discloses a pressing sleeve type workpiece dismounting device and a using method, and belongs to the technical field of product dismounting. The problem that an existing dismounting tool is inconvenient to use and operate for pressing sleeve type workpieces, and consequently dismounting is difficult is solved. The tubular shaft is a stepped shaft, two pin holes are formed in a first shaft diameter section of the tubular shaft, the upper positioning pin and the lower positioning pin are slidably connected into the pin holes, the outer side of a second shaft diameter section of the tubular shaft is in threaded connection with the dismounting nut, one end of the top shaft is a conical head, and the top shaft is slidably connected into the tubular shaft along one end of the conical head. The upper positioning pin and the lower positioning pin are pushed out of the pin holes through the conical head, the supporting sleeve is arranged on the outer side of the tubular shaft in a sleeving mode, and one end of the dismounting nut makes contact with the supporting sleeve. The pressing sleeve type workpiece to be disassembled can be conveniently pulled out from a large machine part through the cooperation of the pipe shaft, the top shaft and the disassembling nut, compared with a traditional knocking disassembling mode, potential safety hazards are reduced, limitation to the operation space is reduced, and the requirement for disassembling work of pressing sleeve type workpieces with various inner diameters can be met.

Description

Technical Field

[0001] The invention relates to a sleeve-type workpiece disassembly device and a use method thereof, belonging to the technical field of product disassembly. Background Art

[0002] When pressed sleeve workpieces, such as bearing rings, bushings and other interference fit parts need to be repaired or disassembled and replaced, it is often difficult to disassemble them due to the inconvenience of using disassembly tools. In particular, when pressed sleeve workpieces inside large machines need to be repaired or disassembled and replaced, it is necessary to slowly knock the pressed sleeve workpiece to be disassembled out from the inside of the large machine along the opposite direction of the pressed-in direction. This disassembly method is very cumbersome and may even be impossible to operate due to space problems. When encountering pressed sleeve workpieces on large machines with complex internal structures, there is a possibility that the pressed sleeve workpiece and the large machine part will rust when there is interference fit, which makes the disassembly of the pressed sleeve workpiece even more difficult. Summary of the invention

[0003] The present invention is to solve the above technical problems and further provides a sleeve-type workpiece disassembly device and a use method.

[0004] The technical solution adopted by the present invention to solve the above technical problems is:

[0005] A device for disassembling a sleeve-type workpiece comprises a pipe shaft, a top shaft, an upper locating pin, a lower locating pin, a supporting sleeve and a disassembling nut. The pipe shaft is a stepped shaft. Two pin holes are provided on the first axial diameter section of the pipe shaft. The upper locating pin and the lower locating pin are slidably connected in the pin holes. The outer side of the second axial diameter section of the pipe shaft is threadedly connected to the disassembly nut. One end of the top shaft is a cone head. The top shaft is slidably connected in the pipe shaft along one end of the cone head. The upper locating pin and the lower locating pin are pushed out of the pin holes through the cone head. The supporting sleeve is sleeved on the outer side of the pipe shaft. One end of the disassembly nut is in contact with the supporting sleeve.

[0006] Furthermore, a ring plate is arranged between one end of the disassembly nut and the supporting sleeve.

[0007] Furthermore, the third axial diameter section of the tube shaft is threadedly connected to a positioning ring.

[0008] Furthermore, the outer diameter of the positioning ring is smaller than the inner diameter of the disassembly nut.

[0009] Furthermore, the surfaces of the upper positioning pin and the lower positioning pin are coated with butter.

[0010] Furthermore, the angle of the cone head is 15°.

[0011] Furthermore, one end of the tube axis away from the first axial diameter section is flat.

[0012] Furthermore, one end of the support sleeve away from the disassembly nut contacts the large machine part.

[0013] Furthermore, the inner diameter of the supporting sleeve is larger than the outer diameter of the sleeve-type workpiece to be disassembled.

[0014] A method for using the above-mentioned press-sleeve workpiece disassembly device, threading a locating ring on the third axial diameter section, inserting a pipe shaft and a top shaft into the inner hole of the press-sleeve workpiece to be disassembled, and pushing the top shaft by referring to the insertion depth of the pipe shaft through the locating ring, so that the cone head pushes the upper locating pin and the lower locating pin out of the pin hole, and the upper locating pin and the lower locating pin are clamped on the end surface of the press-sleeve workpiece inside the large machine part, and the supporting sleeve and the ring plate are sequentially sleeved on the pipe shaft, and the disassembly nut is threaded on the second axial diameter section, and the supporting sleeve is clamped between the large machine part and the ring plate. While tightening the disassembly nut, the pipe shaft is prevented from rotating through the clamping force, thereby driving the pipe shaft and the press-sleeve workpiece to be disassembled to be pulled out.

[0015] Compared with the prior art, the present invention has the following effects:

[0016] Through the cooperation of the pipe shaft, the top shaft and the disassembly nut, the compression sleeve workpiece to be disassembled can be conveniently pulled out from the large machine part. Compared with the traditional knocking disassembly method, it reduces safety hazards and reduces the restriction on the operating space. It can meet the disassembly work of compression sleeve workpieces with various inner diameters, expands the disassembly range, improves the convenience of the disassembly process, and greatly improves the work efficiency of the disassembly process. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0018] Figure 1 It is a structural schematic diagram of the disassembly state of the sleeve-type workpiece disassembly device;

[0019] Figure 2 It is a structural schematic diagram of the initial state of the sleeve-type workpiece disassembly device;

[0020] Figure 3 A cross-sectional view of the cooperation between the pipe shaft and the top shaft of the press sleeve type workpiece removal device;

[0021] Figure 4 It is a cross-sectional view of a pipe shaft in a press sleeve type workpiece disassembly device;

[0022] Figure 5 This is the main view of the top shaft in the sleeve-type workpiece disassembly device;

[0023] Figure 6 This is a front view of the upper positioning pin in the sleeve-type workpiece disassembly device;

[0024] In the figure: 1. pipe shaft; 1-1. first shaft diameter section; 1-2. second shaft diameter section; 1-3. pin hole; 1-4. third shaft diameter section; 2. support sleeve; 3. ring plate; 4. disassembly nut; 5. locating ring; 6. upper locating pin; 7. lower locating pin; 8. top shaft; 9. cone head; 10. flattening; 11. workpiece of the sleeve type to be disassembled; 12. large machine parts. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely explain the technical solutions in the embodiments of the present invention. It should be noted that the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict, and the described embodiments are only part of the embodiments of the present invention, not all of the embodiments.

[0026] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] See attached Figure 1-6 To illustrate the present embodiment, a device for disassembling a sleeve-type workpiece includes a tube shaft 1, a top shaft 8, an upper locating pin 6, a lower locating pin 7, a support sleeve 2 and a disassembly nut 4, wherein the tube shaft 1 is a stepped shaft, and two pin holes 1-3 are provided on the first axial diameter section 1-1 of the tube shaft 1, the upper locating pin 6 and the lower locating pin 7 are slidably connected in the pin holes 1-3, and the outer side of the second axial diameter section 1-2 of the tube shaft 1 is threadedly connected to the disassembly nut 4, one end of the top shaft 8 is a cone head 9, and the top shaft 8 is slidably connected in the tube shaft 1 along one end of the cone head 9, and the upper locating pin 6 and the lower locating pin 7 are pushed out of the pin holes 1-3 through the cone head 9, the support sleeve 2 is sleeved on the outer side of the tube shaft 1, and one end of the disassembly nut 4 is in contact with the support sleeve 2.

[0028] The upper positioning pin 6 and the lower positioning pin 7 in the pin hole 1-3 of the pipe shaft 1 are respectively pushed out through the push shaft 8, and then clamped on the end surface of the sleeve-type workpiece inside the large machine part 12. By tightening the disassembly nut 4 and clamping the flat clamp 10 at the same time, the pipe shaft 1 and the disassembly nut 4 are prevented from coaxially rotating, and the sleeve-type workpiece 11 to be disassembled is pulled out from the large machine part 12. Compared with the traditional knocking disassembly method, it reduces safety hazards and reduces the limitation on the operating space. It can meet the disassembly work of sleeve-type workpieces with various inner diameters, expands the disassembly range, improves the convenience of the disassembly process, and greatly improves the work efficiency of the disassembly process.

[0029] A ring plate 3 is arranged between one end of the disassembly nut 4 and the support sleeve 2. The ring plate 3 increases the force bearing area between the support sleeve 2 and the disassembly nut 4, so that the tightening force of the disassembly nut 4 is more evenly transmitted to the support sleeve 2, thereby realizing the extraction of the press sleeve type workpiece 11 to be disassembled.

[0030] The third axial diameter section 1-4 of the pipe shaft 1 is threadedly connected to the positioning ring 5. Specifically, the axial length of the sleeve-type workpiece 11 to be disassembled, the length of the support sleeve 2, the length of the ring plate 3 and the length of the disassembly nut 4 are added together to determine the position of the positioning ring 5 in the third axial diameter section 1-4, thereby ensuring that the top shaft 8 can push out the upper positioning pin 6 and the lower positioning pin 7 along the end surface of the sleeve-type workpiece inside the large machine part 12. By setting the positioning ring 5, the depth of the pipe shaft 1 inserted into the large machine part 12 can be preliminarily determined, and then the upper positioning pin 6 and the lower positioning pin 7 are pushed out of the pipe shaft along the end surface of the sleeve-type workpiece inside the large machine part 12 before disassembly, thereby improving the work efficiency of the disassembly process.

[0031] The outer diameter of the positioning ring 5 is smaller than the inner diameter of the disassembly nut 4. The outer diameter of the positioning ring 5 is smaller than the inner diameter of the disassembly nut to ensure that when the positioning ring is screwed on the third shaft diameter section, the disassembly nut 4 can pass through the outer surface of the positioning ring 5 and be screwed on the second shaft diameter section 1-2.

[0032] The surfaces of the upper positioning pin 6 and the lower positioning pin 7 are coated with butter. Specifically, the upper positioning pin 6 and the lower positioning pin 7 are loosely fitted in the pin hole 1-3, and the butter provides the upper positioning pin 6 and the lower positioning pin 7 with adhesiveness so that they do not slip out of the pin hole 1-3, ensuring that the upper positioning pin 6 and the lower positioning pin 7 can be engaged with the end surface of the sleeve-type workpiece inside the large machine part 12 through the cooperation of the upper positioning pin 6 and the lower positioning pin 7.

[0033] The angle of the cone head 9 is 15°. Figure 5 The cone head 9 with a 15° angle can be inserted into the chamfered gap between the upper positioning pin 6 and the lower positioning pin 7, and then the upper positioning pin 6 and the lower positioning pin 7 are pushed out from the pin hole 1-3, and are clamped on the end surface of the pressed sleeve workpiece inside the large machine part 12, so as to facilitate the disassembly of the pressed sleeve workpiece.

[0034] The end of the pipe shaft 1 away from the first axial diameter section 1-1 is a flattened part 10. The flattened part 10 can prevent the pipe shaft 1 from coaxially rotating with the disassembly nut 4 when the disassembly nut 4 is tightened. The flattened part 10 fixes the pipe shaft 1, so that the disassembly nut 4 and the pipe shaft 1 move relative to each other, and the distance between the disassembly nut and the large machine part 12 is limited by the ring plate and the support sleeve, so that the workpiece 11 to be disassembled is pulled out of the large machine part 12 as the disassembly nut unscrews the pipe shaft 1.

[0035] The end of the support sleeve 2 away from the disassembly nut 4 contacts the large machine part 12. When the disassembly nut 4 is tightened, the support sleeve 2 is supported between the large machine part and the ring plate 3 to ensure that the distance between the large machine part 12 and the disassembly nut 4 remains unchanged, and then during the tightening of the disassembly nut 4, the pipe shaft 1 and the to-be-disassembled press sleeve workpiece 11 are pulled out synchronously.

[0036] The inner diameter of the support sleeve 2 is larger than the outer diameter of the to-be-removed press sleeve workpiece 11. When the pipe shaft 1 and the to-be-removed press sleeve workpiece 11 are pulled out synchronously, the to-be-removed press sleeve workpiece 11 can be sleeved on the pipe shaft 1 and in the support sleeve 2, thereby preventing the to-be-removed press sleeve workpiece 11 from falling or flying out, thereby reducing safety hazards.

[0037] The pipe shaft 1 is made into different sizes and specifications according to the proportion. The pipe shafts 1 of different sizes and specifications can adapt to different sizes of the pressed sleeve workpieces 11 to be disassembled, thereby expanding the application scope of the pressed sleeve workpiece disassembly device.

[0038] A method for using the above-mentioned press-sleeve workpiece disassembly device, threading the positioning ring 5 on the third axial diameter section of the pipe shaft, inserting the pipe shaft and the top shaft into the inner hole of the press-sleeve workpiece 11 to be disassembled, and pushing the top shaft 8 with reference to the insertion depth of the pipe shaft 1 through the positioning ring 5, so that the cone head 9 pushes the upper positioning pin 6 and the lower positioning pin 7 out of the pin hole 1-3, and the upper positioning pin 6 and the lower positioning pin 7 are clamped on the end surface of the press-sleeve workpiece inside the large machine part 12, and the support sleeve and the ring plate are sequentially sleeved on the pipe shaft, and the disassembly nut is threaded on the second axial diameter section of the pipe shaft, and the support sleeve 2 is clamped between the large machine part 12 and the ring plate 3. At this time, the press-sleeve workpiece disassembly device is in a disassembly state. While tightening the disassembly nut 4, the clamping flat force 10 prevents the pipe shaft 1 from rotating, thereby driving the pipe shaft 1 and the press-sleeve workpiece 11 to be disassembled to be pulled out, thereby realizing the disassembly of the press-sleeve workpiece. Specifically, the initial state is that the upper positioning pin and the lower positioning pin are respectively in the two pin holes, and the disassembly state is that the top shaft pushes the upper positioning pin and the lower positioning pin out of the two pin holes, and then clamps them on the end surface of the pressed sleeve workpiece inside the large machine part 12.

[0039] Obviously, the embodiments of the present invention disclosed above are only used to help illustrate the present invention. The embodiments do not describe all the details in detail, nor do they limit the invention to specific implementation methods. According to the content of this specification, many modifications and changes can be made. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. It is not necessary and impossible to exhaustively list all implementation methods here.

Claims

1. A device for disassembling a sleeve-type workpiece, characterized in that: The invention comprises a tube shaft (1), a top shaft (8), an upper positioning pin (6), a lower positioning pin (7), a support sleeve (2) and a disassembly nut (4); the tube shaft (1) is a stepped shaft; two pin holes (1-3) are provided on a first axial diameter section (1-1) of the tube shaft (1); an upper positioning pin (6) and a lower positioning pin (7) are slidably connected in the pin holes (1-3); the outer side of the second axial diameter section (1-2) of the tube shaft (1) is threadedly connected to the disassembly nut (4); one end of the top shaft (8) is a cone head (9); the top shaft (8) is slidably connected in the tube shaft (1) along one end of the cone head (9); the upper positioning pin (6) and the lower positioning pin (7) are pushed out of the pin holes (1-3) through the cone head (9); the support sleeve (2) is sleeved on the outer side of the tube shaft (1); and one end of the disassembly nut (4) contacts with the support sleeve (2).

2. A sleeve-type workpiece disassembly device according to claim 1, characterized in that: A ring plate (3) is arranged between one end of the disassembly nut (4) and the supporting sleeve (2).

3. A sleeve-type workpiece disassembly device according to claim 1, characterized in that: The third axial diameter section (1-4) of the tubular shaft (1) is threadedly connected to a positioning ring (5).

4. A sleeve-type workpiece disassembly device according to claim 3, characterized in that: The outer diameter of the positioning ring (5) is smaller than the inner diameter of the disassembly nut (4).

5. The device for disassembling a sleeve-type workpiece according to claim 1, characterized in that: The surfaces of the upper positioning pin (6) and the lower positioning pin (7) are coated with butter.

6. The device for disassembling a sleeve-type workpiece according to claim 1, characterized in that: The angle of the cone head (9) is 15°.

7. The device for disassembling a sleeve-type workpiece according to claim 1, characterized in that: The end of the tube axis (1) away from the first axial diameter section (1-1) is flat (10).

8. The device for disassembling a sleeve-type workpiece according to claim 1, characterized in that: One end of the support sleeve (2) away from the disassembly nut (4) contacts the large machine part (12).

9. A sleeve-type workpiece disassembly device according to claim 8, characterized in that: The inner diameter of the supporting sleeve (2) is larger than the outer diameter of the sleeve-type workpiece (11) to be disassembled.

10. A method for using the sleeve-type workpiece disassembly device as claimed in any one of claims 1 to 9, characterized in that: The positioning ring (5) is screwed on the third axial diameter section (1-4), the pipe shaft (1) and the top shaft (8) are inserted into the inner hole of the sleeve-type workpiece (11) to be disassembled, and the top shaft (8) is pushed by the positioning ring (5) with reference to the insertion depth of the pipe shaft (1), so that the cone head (9) pushes the upper positioning pin (6) and the lower positioning pin (7) out of the pin hole (1-3), and the upper positioning pin (6) and the lower positioning pin (7) are clamped on the end surface of the sleeve-type workpiece inside the large machine part (12), and the support sleeve (2) and the ring plate (3) are sequentially sleeved on the pipe shaft (1), and the disassembly nut (4) is screwed on the second axial diameter section (1-2), and the support sleeve (2) is clamped between the large machine part (12) and the ring plate (3). While tightening the disassembly nut (4), the pipe shaft (1) is prevented from rotating through the clamping flat force (10), thereby driving the pipe shaft (1) and the sleeve-type workpiece (11) to be disassembled to be pulled out.

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