Lossless disassembling and assembling tool for middle-large-sized shafts and gears

Abstract

The invention discloses a lossless dismounting tool for medium and large-sized shafts and gears, belongs to the technical field of electromechanical equipment maintenance tools, and is used for preventing the assembling shafts and the gears from being damaged in the dismounting process. According to the technical scheme, an ultrahigh-pressure hydraulic device is connected with an inner hole of a gear and an oil inlet of an annular hydraulic cylinder through a kit oil pipe and a hydraulic cylinder oil pipe, two sets of connecting holes are evenly distributed in the circumference of the annular hydraulic cylinder, and the inner side connecting holes are opposite to the end face of an assembly shaft; the end face of the assembly shaft is provided with a plurality of fixing screw holes opposite to the inner side connecting hole ring, the outer side connecting hole is opposite to the circumferential side face of the lower portion of the gear, a plurality of connecting bolts penetrate through the two sets of connecting holes to be connected with the end face of the assembly shaft and the side face of the gear, and the mounting top base and the dismounting top base are placed between the end face of the assembly shaft and the annular hydraulic cylinder. The shaft and the gear can be prevented from being strained and scratched, mounting and dismounting can be completed through the same device, ring deformation and damage caused by cold charging and hot charging can be eliminated, and lossless equipment dismounting and mounting are achieved.

Description

Technical Field

[0001] The invention relates to a tool for repeated and non-destructive disassembly and assembly of medium and large shafts and gears, belonging to the technical field of electromechanical equipment maintenance tools. Background Art

[0002] There are two main installation structures for assembly shafts, gears and other sets of parts currently available. One is that the assembly shaft and gears are assembled by heat installation, cold installation or pressure in the case of a smooth shaft. When disassembling, the gears need to be pulled apart from the assembly shaft. The other is that the assembly shaft and gears are installed together through a keyway, and when disassembling, they need to be connected by a disassembly key. Both of these installation structures have their own disadvantages in assembly and disassembly. During assembly and disassembly of the first installation structure, the use of heat installation and cold installation processes may cause deformation and damage to the assembly shaft, while the adhesion between the assembly shaft and the set parts assembled by key connection is not strong, and the gap between the shaft and the set parts is large, affecting the installation accuracy. At present, the method of using a puller and applying lubricating oil to disassemble the assembly shaft of the first installation structure is generally used. The puller is generally a three-claw type, which cannot achieve 360-degree force. 0 The lubricating oil is evenly distributed, and the lubricating oil applied will decrease until it disappears as the gap decreases. The lubricating oil can only be used during installation and cannot be applied during disassembly, which makes the disassembly process time-consuming and laborious. When disassembling the assembly shaft of the second installation structure, the keyway is easy to loosen and has a small load-bearing capacity, and stress concentration is generated at the key and keyway, which is easy to be damaged. Therefore, it is very necessary to invent a tool that expands the inner diameter of the gear through hydraulic oil to achieve clearance assembly during interference fit disassembly and assembly. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a non-destructive disassembly and assembly tool for medium and large shafts and gears. This disassembly and assembly tool can eliminate the deformation and damage caused by cold installation and hot installation during the disassembly and assembly process of the shaft and gear, eliminate the scratches on the workpiece surface caused by unbalanced loading and poor lubrication during the disassembly and assembly of the puller, eliminate the stress concentration in the key and keyway parts, and ensure the integrity of the assembled shaft.

[0004] The technical solution to solve the above technical problems is: A non-destructive disassembly and assembly tool for medium and large shafts and gears, comprising an ultra-high pressure hydraulic device, a gear oil pipe, a hydraulic cylinder oil pipe, an annular hydraulic cylinder, a top seat, and connecting bolts. Two pressure oil output ports of the ultra-high pressure hydraulic device are respectively connected to the oil inlets of the gear oil pipe and the hydraulic cylinder oil pipe, the oil outlet of the gear oil pipe is connected to the inner hole of the gear, the oil outlet of the hydraulic cylinder oil pipe is connected to the oil inlet of the annular hydraulic cylinder, two groups of connecting holes are evenly distributed on the circumference of the annular hydraulic cylinder, the two groups of connecting holes respectively form two circular rings surrounding the circumference of the annular hydraulic cylinder, the inner connecting hole ring is opposite to the end face of the assembly shaft, a plurality of fixing screw holes are arranged on the end face of the assembly shaft and are opposite to the inner connecting hole ring, the outer connecting hole ring is opposite to the lower circumferential side face of the gear, a plurality of connecting bolts respectively pass through the two groups of circular ring connecting holes on the circumference of the annular hydraulic cylinder and are connected to the end face of the assembly shaft and the side face of the gear, and the top seats are respectively placed between the end face of the assembly shaft and the annular hydraulic cylinder.

[0005] In the above-mentioned non-destructive disassembly and assembly tool for medium and large shafts and gears, the assembly shaft and the gear are in interference connection, and the connection structure between the gear and the assembly shaft is a key connection.

[0006] In the above-mentioned non-destructive disassembly and assembly tool for medium and large shafts and gears, one end of the top seat is opposite to the push rod of the annular hydraulic cylinder, and the other end of the top seat is opposite to the end face of the assembly shaft and the outer side of the gear respectively.

[0007] The above-mentioned non-destructive disassembly and assembly tool for medium and large shafts and gears, the top seat is a hollow disc, the circumference of the disc of the top seat is evenly distributed with multiple circular holes, the multiple circular holes respectively correspond to the connecting holes on the inner side of the circumference of the annular hydraulic cylinder, multiple connecting bolts respectively pass through the multiple circular holes of the top seat disc and are connected to the fixing screw holes on the end face of the assembly shaft, one side plate surface of the disc of the top seat is provided with an annular protrusion, the annular protrusion is opposite to the side face of the gear on the assembly shaft.

[0008] The above-mentioned non-destructive disassembly and assembly tool for medium and large shafts and gears, the top seat is a hollow disc, the circumference of the disc of the top seat is evenly distributed with multiple circular holes, the multiple circular holes respectively correspond to the connecting holes on the outer side of the circumference of the annular hydraulic cylinder, multiple connecting bolts respectively pass through the multiple circular holes of the top seat disc and are connected to the side of the gear, and there is an annular protrusion on one side plate of the disc of the top seat, and the annular protrusion is opposite to the end face of the assembly shaft.

[0009] The beneficial effects of the present invention are: The ultra-high pressure hydraulic device of the present invention inputs one pressure oil into the gear through the gear oil pipe to achieve lubrication and expand the inner diameter of the gear; another pressure oil is input into the annular hydraulic cylinder through the hydraulic cylinder oil pipe, and the annular hydraulic cylinder installs and removes the gear and the assembly shaft through the top seat The present invention can eliminate ring deformation and damage caused by cold installation and hot installation during the disassembly and assembly of the assembly shaft and gear, eliminate workpiece surface scratches caused by unbalanced load and poor lubrication during the disassembly and assembly of the puller, eliminate stress concentration at the key and keyway parts, and realize high-precision, stress-free and lossless equipment disassembly and assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the installation structure of the present invention; Figure 1-1 The installation starts. Figure 1-2 The installation is complete; Figure 2 It is a schematic diagram of the disassembly structure of the present invention; Figure 2-1 The disassembly is finished; Figure 3 is a cross-sectional view of an annular hydraulic cylinder; Figure 4 It is a schematic diagram of the structure of the top seat; The markings in the figure are as follows: assembly shaft 1, gear 2, ultra-high pressure hydraulic device 3, gear oil pipe 4, hydraulic cylinder oil pipe 5, annular hydraulic cylinder 6, push rod 7, connecting hole 8, top seat 9, top seat bolt hole 10, connecting bolt 11, connecting bolt 12. DETAILED DESCRIPTION

[0011] The present invention is composed of an ultra-high pressure hydraulic device 3, a gear oil pipe 4, a hydraulic cylinder oil pipe 5, an annular hydraulic cylinder 6, a top seat 9, a connecting bolt 11 and a connecting bolt 12.

[0012] Figure 1 It is shown that the gear 2 is mounted on the assembly shaft 1, and the inner hole of the gear 2 and the assembly shaft 1 are interference fit. When installing, the gear 2 needs to be pushed onto the assembly shaft 1. Figure 1-1 To start the installation, Figure 1-2 The installation is complete.

[0013] Figure 1 , 2 3 shows that the circumference of the annular hydraulic cylinder 6 has a push rod 7 and two groups of connecting holes 8.

[0014] The top seat 9 is placed between the end surface of the annular hydraulic cylinder 6 and the assembly shaft 1, one end of the top seat 9 is opposite to the push rod 7 of the annular hydraulic cylinder 6, and the other end of the top seat 9 is opposite to the end surface of the assembly shaft 1 and the outer side of the gear 2 respectively.

[0015] The two groups of connecting holes 8 respectively form two circular rings surrounding the circumference of the annular hydraulic cylinder 6, the inner connecting hole ring is opposite to the end face of the assembly shaft 1, and the outer connecting hole ring is opposite to the lower circumferential side face of the gear 2. A plurality of connecting bolts 11 respectively pass through the two groups of circular connecting holes 8 on the circumference of the annular hydraulic cylinder 6 and are connected to the end face of the assembly shaft 1 and the side face of the gear 2.

[0016] Figure 2 It is shown that the two pressure oil output ports of the ultra-high pressure hydraulic device 3 are connected to the oil inlets of the gear oil pipe 4 and the hydraulic cylinder oil pipe 5 respectively, the oil outlet of the gear oil pipe 4 is connected to the inner hole of the set 2, and the oil outlet of the hydraulic cylinder oil pipe 5 is connected to the oil inlet of the annular hydraulic cylinder 6. The ultra-high pressure hydraulic device 3 inputs the pressure oil into the gear or bearing through the gear oil pipe 5 to achieve lubrication and expand its inner diameter for disassembly; the ultra-high pressure hydraulic device 3 inputs the pressure oil into the annular hydraulic cylinder 6 through the hydraulic cylinder oil pipe 5, and the annular hydraulic cylinder 6 disassembles the gear 2 of the assembly shaft 1. Figure 2 To start disassembly, Figure 2-1 The disassembly is finished.

[0017] Figure 1 , 4 It is shown that the top seat 9 is a hollow disc, and a plurality of top seat circular holes 10 are evenly distributed on the circumference of the disc of the top seat 9, and the plurality of top seat circular holes 10 respectively correspond to the connecting holes 8 on the inner side of the circumference of the annular hydraulic cylinder 6, and a plurality of connecting bolts 11 respectively pass through the plurality of top seat circular holes 10 of the disc of the top seat 9 and are connected to the fixing screw holes on the end face of the assembly shaft 1, and one side plate surface of the disc of the top seat 9 is opposite to the side surface of the gear 2.

[0018] Figure 2 , 4 It is shown that the top seat 9 is a hollow disc, and the top seat 9 is turned 180 degrees when disassembled. A plurality of top seat circular holes 10 are evenly distributed on the circumference of the disc of the top seat 9, and the plurality of top seat circular holes 10 respectively correspond to the connection holes 8 on the outer circumference of the annular hydraulic cylinder 6, and a plurality of connecting bolts 12 are respectively screwed into the cross section of the assembly shaft 1, and one side plate surface of the disc of the top seat 9 is opposite to the end surface of the assembly shaft 1.

[0019] Figure 1 It is shown that the process of installing the gear 2 to the assembly shaft 1 of the present invention is as follows: First, place the top seat 9 between the end face of the assembly shaft 1 and the annular hydraulic cylinder 6. The multiple circular holes 11 of the top seat 9 correspond to the connection holes 8 on the inner side of the circumference of the annular hydraulic cylinder 6. The multiple connecting bolts 11 pass through the multiple circular holes 10 of the top seat 9 disk and connect with the fixing screw holes on the end face of the assembly shaft 1. Then, connect the oil outlet of the gear oil pipe 4 of the ultra-high pressure hydraulic device 3 to the inner hole of the gear or bearing, and connect the oil outlet of the hydraulic cylinder oil pipe 5 to the oil inlet of the annular hydraulic cylinder 6. Start the ultra-high pressure hydraulic device 3, the gear oil pipe 5 inputs the pressure oil into the gear or bearing to achieve lubrication and expand its inner diameter, and the hydraulic cylinder oil pipe 5 inputs the pressure oil into the annular hydraulic cylinder 6. The push rod 7 of the annular hydraulic cylinder 6 pushes the top seat 9, and the top seat 9 pushes the gear 2 to the specified position on the assembly shaft 1. The pressure of the gear oil pipe 4 is gradually reduced 24 times within 12 hours, so that the gear shrinks and holds the assembly shaft 1 tightly, and the installation process of the gear and the assembly shaft is completed.

[0020] Figure 2 It is shown that the process of disassembling the gear 2 from the assembly shaft 1 of the present invention is as follows: First, turn the top seat 9 180 degrees and place it between the end face of the assembly shaft 1 and the annular hydraulic cylinder 6. The multiple top seat circular holes 10 of the top seat 9 correspond to the connection holes 8 on the outer side of the circumference of the annular hydraulic cylinder 6, and the multiple connecting bolts 12 pass through the multiple top seat circular holes 10 of the top seat 9 disk to connect with the side of the shaft. Then, connect the oil outlet of the gear oil pipe 4 of the ultra-high pressure hydraulic device 3 to the inner hole of the gear or bearing, and connect the oil outlet of the hydraulic cylinder oil pipe 5 to the oil inlet of the annular hydraulic cylinder 6; start the ultra-high pressure hydraulic device 3, the gear oil pipe 5 inputs the pressure oil into the gear to achieve lubrication and expand its inner diameter, and at the same time, the hydraulic cylinder oil pipe 5 inputs the pressure oil into the annular hydraulic cylinder 6, and the push rod of the annular hydraulic cylinder 6 pushes the disassembly top seat 9, so that the gear 2 withdraws from the assembly shaft 1, and the disassembly process of the gear 2 and the assembly shaft 1 is completed.

[0021] An embodiment of the present invention is as follows: The model of the ultra-high pressure hydraulic device 3 is a MAXIMATOR product, model M37LVE / M189LVEHD / 2xC1 / 30 / F / 2xEVH / 0-600(160) / 0-2500(160) / W / VA / AV2 / SCHL; The diameter of the gear oil pipe 4 is 20 mm; The diameter of the hydraulic cylinder oil pipe 5 is 12 mm; The diameter of the annular hydraulic cylinder 6 is 400 mm; The outer diameter of the top seat 9 is 880 mm, the inner diameter is 510 mm, the thickness is 210 mm, the diameter of the circular hole 11 is 70 mm, and the outer diameter of the annular protrusion 12 is 840 mm; The connecting bolt 13 has a diameter of 64 mm and a length of 710 mm.

Claims

1. A non-destructive disassembly and assembly tool for medium and large shafts and gears, characterized by: The invention comprises an ultra-high pressure hydraulic device (3), a gear oil pipe (4), a hydraulic cylinder oil pipe (5), an annular hydraulic cylinder (6), a top seat (9), and connecting bolts (13). The two pressure oil output ports of the ultra-high pressure hydraulic device (3) are respectively connected to the oil inlets of the gear oil pipe (4) and the hydraulic cylinder oil pipe (5). The oil outlet of the gear oil pipe (4) is connected to the inner hole of the gear (2). The oil outlet of the hydraulic cylinder oil pipe (5) is connected to the oil inlet of the annular hydraulic cylinder (6). The annular hydraulic cylinder (6) is evenly distributed with two groups of connecting holes (8). The two groups of connecting holes are connected to the inner hole of the gear (2). The connection holes (8) respectively form two circular rings surrounding the circumference of the annular hydraulic cylinder (6), the inner connection hole circular ring is opposite to the end face of the assembly shaft (1), a plurality of fixing screw holes are provided on the end face of the assembly shaft (1) and are opposite to the inner connection hole circular ring, the outer connection hole circular ring is opposite to the lower circumferential side face of the gear (2), a plurality of connecting bolts (13) respectively pass through the two groups of circular connection holes on the circumference of the annular hydraulic cylinder (6) and are connected to the end face of the assembly shaft (1) and the side face of the gear (2), and the top seat (9) is placed between the end face of the assembly shaft (1) and the annular hydraulic cylinder (6).

2. The non-destructive disassembly and assembly of medium-sized and large shafts and gears according to claim 1 is characterized by: The assembly shaft (1) and the gear (2) are in interference connection, and the connection structure between the gear (2) and the assembly shaft (1) is a key connection.

3. The non-destructive disassembly and assembly tool for medium-to-large shafts and gears according to claim 1, characterized in that: One end of the top seat (9) is opposite to the push rod (7) of the annular hydraulic cylinder (6), and the other end of the top seat (9) is opposite to the end surface of the assembly shaft (1) and the outer side of the gear (2).

4. The non-destructive disassembly and assembly tool for medium-to-large shafts and gears according to claim 1, characterized in that: The top seat (9) is a hollow disc, and a plurality of top seat bolt holes (10) are evenly distributed on the circumference of the disc of the top seat (9), and the plurality of top seat bolt holes (10) respectively correspond to the connection holes (8) on the inner side of the circumference of the annular hydraulic cylinder (6). A plurality of connection bolts (13) respectively pass through the plurality of top seat bolt holes (10) of the disc of the top seat (9) and are connected to the fixing screw holes on the end face of the assembly shaft (1). A ring-shaped protrusion (12) is provided on one side plate surface of the disc of the top seat (9), and the ring-shaped protrusion (12) is opposite to the side face of the gear (2) on the assembly shaft (1).

5. The non-destructive disassembly and assembly tool for medium-to-large shafts and gears according to claim 1, characterized in that: The top seat (9) is a hollow disc, and a plurality of top seat bolt holes (10) are evenly distributed on the circumference of the disc of the top seat (9), and the plurality of top seat bolt holes (10) respectively correspond to the connection holes (8) on the outer circumference of the annular hydraulic cylinder (6). A plurality of connecting bolts (14) respectively pass through the plurality of circular holes (10) of the disc of the top seat (9) and are connected to the side surface of the gear (2). An annular protrusion (12) is provided on one side plate surface of the disc of the top seat (9), and the annular protrusion (12) is opposite to the end surface of the assembly shaft (1).

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