A method and device for repairing shaft head wear

Abstract

The present invention discloses a method and device for repairing shaft head wear, and relates to the technical field of shaft parts damage repair. The specific steps are as follows: Step 1: mold processing; according to the shaft head model of the tapered shaft, a standard split mold matching it is made; Step 2: surface treatment; use a welding gun to bake oil, use an electric grinding wheel to grind the repair surface, and use acetone to thoroughly clean the surface; Step 3: apply material; use a scraper to apply the polymer composite material; Step 4: molding repair; through the repair device, when the polymer composite material is not solidified, the metal mold coated with the release agent is installed in place to ensure that excess polymer composite material is extruded; Step 5: solidification. The process of the present invention uses a specially designed repair device, and through a metal mold kit provided with an upper mold and a lower mold, the excess polymer composite material coated on the repair part is extruded, so that the material coated on the worn part of the shaft head of the tapered shaft is even and flat, which is convenient for repairing the wear of the shaft head of the tapered shaft.

Description

Technical Field

[0001] The present invention relates to the technical field of damage repair of shaft parts, and specifically to a method and device for repairing worn shaft heads. Background Art

[0002] Shaft parts are one of the typical parts often encountered in hardware fittings. They are mainly used to support transmission components, transmit torque, and bear loads. When the shaft head of a large shaft part wears, it is difficult to disassemble and the replacement cost is relatively high. It is necessary to repair the worn part of the shaft head of the shaft part. However, when repairing the worn shaft head of a tapered shaft, manually applying materials for maintenance operations easily causes the surface of the tapered shaft to be uneven, affecting the subsequent use of the tapered shaft. In order to facilitate the repair of the worn shaft head of the tapered shaft, a method and device for repairing the worn shaft head are provided. Summary of the Invention

[0003] The purpose of the present invention is to provide a method and device for repairing worn shaft heads in order to facilitate the repair of the worn shaft heads of tapered shafts.

[0004] To achieve the above purpose, the present invention provides the following technical solution: A method for repairing worn shaft heads, the specific steps are as follows:

[0005] Step 1: Mold processing; fabricate a standard split mold that matches the shaft head model of the tapered shaft.

[0006] Step 2: Surface treatment; use a welding torch to bake off the oil until there are no sparks on the repair surface; use an electric grinding wheel to polish the repair surface to remove the oxide layer and impurities on the repair surface, exposing the metallic luster; thoroughly clean the surface with acetone.

[0007] Step 3: Applying materials; use a squeegee to apply a high molecular composite material. The first layer should be thin and compacted to avoid air holes, and then apply it all.

[0008] Step 4: Forming and repairing; when the high molecular composite material has not cured, install the metal mold coated with a release agent in place through the repair device, ensure that there is excess high molecular composite material extruded, and then remove it with tools.

[0009] Step 5: Curing; it can be demolded and used after curing at room temperature for 24 hours; using methods such as hot air guns, iodine tungsten lamps, or steam heating conduction for forced curing can shorten the curing time. For every 11°C increase in temperature, the curing time is shortened by half, but the temperature increase should not exceed the temperature that the repair surface can withstand.

[0010] A device used in a method for repairing shaft head wear. The repair device adopted in step four includes a base. Rollers are installed at the bottom end of the base. A mounting seat is slidably connected up and down at the top end of the base. An upper mold and a lower mold are installed on the mounting seat. The position of the mounting seat is positioned by a positioning mechanism. The upper mold and the lower mold perform displacement operations through a moving mechanism. The positioning mechanism and the moving mechanism are used to keep the mold and the tapered shaft in the same axial position. The positioning mechanism includes a chute, which is symmetrically opened on the outer wall of the mounting seat. A sliding rod is slidably connected to the inner wall of the chute. A rotating block is rotatably connected to the top end of the mounting seat. A first threaded rod is fixedly connected to the bottom end of the rotating block. The first threaded rod penetrates through the sliding rod. A pushing block extending out of the sliding rod is slidably connected inside the sliding rod. A first spring is connected between the pushing block and the sliding rod. First straight gears are rotatably connected to both sides of the pushing block inside the sliding rod. A positioning plate is fixedly connected to the outer wall of the first straight gear.

[0011] As a further scheme of the present invention: The moving mechanism includes a movable groove, which is opened on the outer wall of the mounting seat. The movable groove is located on one side of the chute. A movable seat is slidably connected to the inner wall of the movable groove. A motor is installed at one end of the mounting seat. The output end of the motor is connected to a second threaded rod. The second threaded rod penetrates through the movable seat. A displacement groove is opened at one end of the movable seat. Displacement plates are symmetrically slidably connected to the inner wall of the displacement groove. A rotating column is rotatably connected to the top end of the movable seat. A third threaded rod is fixedly connected to the bottom end of the rotating column. The third threaded rod penetrates through the displacement plate. Connecting blocks are fixedly connected to the outer walls of the upper mold and the lower mold. Fixed grooves are opened on the outer walls of the connecting blocks.

[0012] As a further scheme of the present invention: The moving mechanism further includes a connecting groove, which is opened on the outer wall of the displacement plate. A fixing block extending into the inner cavity of the connecting groove is slidably connected inside the displacement plate. A second spring is connected between the fixing block and the displacement plate. A second straight gear is rotatably connected to the outer wall of the fixing block inside the displacement plate. A cross plate is slidably connected to the outer wall of the second straight gear inside the displacement plate. The cross plate extends out of the displacement plate. Connecting plates are fixedly connected to both sides of the upper mold. Reinforcement holes are opened on the outer walls of the connecting plates. A ratchet is fixedly connected to the outer wall of the first threaded rod. A clamping block is slidably connected inside the mounting seat. The clamping block is in contact with the ratchet. A third spring is connected between the clamping block and the mounting seat. A displacement frame is slidably connected to one side of the clamping block inside the mounting seat. A fourth spring is connected between the displacement frame and the mounting seat. One end of the displacement frame extends into the inner cavity of the movable groove.

[0013] As a further solution of the present invention: the inner wall of the slide groove fits with the outer wall of the slide rod, the outer wall of the slide rod is provided with a first threaded hole, and the outer wall of the first threaded rod is symmetrically provided with threads matching the first threaded hole.

[0014] As a further solution of the present invention: the outer wall of the pushing block is symmetrically provided with first tooth grooves, and the first tooth grooves are meshed with the first spur gear.

[0015] As a further solution of the present invention: a second threaded hole is formed on the outer wall of the movable seat, the second threaded hole matches the second threaded rod, and the inner wall of the movable groove fits the outer wall of the movable seat.

[0016] As a further solution of the present invention: the inner wall of the displacement groove is in contact with the outer wall of the displacement plate, the outer wall of the displacement plate is provided with a third threaded hole, and the outer wall of the third threaded rod is symmetrically provided with threads matching the third threaded hole.

[0017] As a further solution of the present invention: the inner wall of the connecting groove fits with the outer wall of the connecting block, the inner wall of the fixing groove fits with the outer wall of one end of the fixing block, the outer walls of the cross plate and the fixing block are both provided with second tooth grooves, and the second tooth grooves are meshed with the second spur gear.

[0018] As a further solution of the present invention: one end of the clamping block is engaged with the ratchet wheel, and one end of the displacement frame located in the inner cavity of the movable groove is provided with an inclined surface.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. The process of the present invention uses a specially designed repair device to extrude the excess polymer composite material coated on the repaired part through a metal mold kit provided with an upper mold and a lower mold, so that the material coated on the worn part of the shaft head of the tapered shaft is uniform and flat, which is convenient for repairing the worn shaft head of the tapered shaft.

[0021] 2. By setting a positioning mechanism and a moving mechanism in the repair device, rotating the rotating block drives the slide bar to slide, so that multiple positioning plates and pushing blocks are in contact with the tapered shaft at the same time, and the position between the tapered shaft and the mounting seat is positioned; after the upper mold and the lower mold are installed, the upper mold and the lower mold are closed; the mold and the tapered shaft are at the same axial position; the motor is started to drive the mold to move toward the tapered shaft, and the metal mold squeezes out the excess material on the conical surface of the tapered shaft, so that the material coated on the worn part of the shaft head of the tapered shaft is evenly flat, and the repaired shaft head has higher coaxiality with the tapered shaft and higher surface quality, and only needs simple polishing to be put into use again. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the repair device described in the present invention;

[0023] Figure 2 It is an internal structural schematic diagram of the base of the repair device described in the present invention;

[0024] Figure 3 It is an internal structural schematic diagram of the mounting seat of the repair device described in the present invention;

[0025] Figure 4 It is an internal structural schematic diagram of the sliding rod of the repair device described in the present invention;

[0026] Figure 5 It is an installation schematic diagram of the movable seat of the repair device described in the present invention;

[0027] Figure 6 It is an installation schematic diagram of the displacement plate of the repair device described in the present invention;

[0028] Figure 7 It is an installation schematic diagram of the upper mold and the lower mold of the repair device described in the present invention.

[0029] In the figure: 1, base; 2, roller; 3, mounting seat; 4, upper mold; 5, lower mold; 6, positioning mechanism; 601, chute; 602, sliding rod; 603, rotating block; 604, first threaded rod; 605, pushing block; 606, first spring; 607, first spur gear; 608, positioning plate; 7, moving mechanism; 701, movable groove; 702, movable seat; 703, motor; 704, second threaded rod; 705, displacement groove; 706, displacement plate; 707, rotating column; 708, third threaded rod; 709, connecting block; 710, fixing groove; 711, connecting groove; 712, fixing block; 713, second spring; 714, second spur gear; 715, cross plate; 716, connecting plate; 717, reinforcement hole; 718, ratchet; 719, clamping block; 720, third spring; 721, displacement frame; 722, fourth spring; 8, tapered shaft. Detailed implementation manners

[0030] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0031] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance. In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", "coupling", "setting" 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 directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. The following will describe the embodiments according to the overall structure of the present invention.

[0032] Please refer to Figures 1 to 7 , in an embodiment of the present invention, a method for repairing the wear of a shaft head is as follows:

[0033] Step 1: Mold processing; fabricate a standard split mold that matches the shaft head model of the tapered shaft 8.

[0034] Step 2: Surface treatment; use a welding torch to bake off the oil until there are no sparks on the repair surface; use an electric grinding wheel to polish the repair surface to remove the oxide layer and impurities on the repair surface, exposing the metallic luster; thoroughly clean the surface with acetone.

[0035] It should be noted that "baking off the oil with a welding torch" means that in the surface treatment process before repair, there may be impurities such as oil stains and grease residues on the surface of the repair part. These contaminants will directly affect the adhesion of the polymer composite material. Therefore, before repair, an oxy-acetylene welding torch or a propane welding torch is usually used for rapid baking to remove the oil. Because its flame temperature is high, it can quickly decompose and remove the oil stains. In addition, when constructing in winter and using the "baking off the oil with a welding torch" process to locally heat the part to be repaired, it can also play the role of preheating the equipment foundation.

[0036] Step 3: Applying the material; use a scraper to apply the polymer composite material. The first layer should be thin and compacted to avoid air holes, and then apply it all.

[0037] Step 4: Forming and repairing; when the polymer composite material has not cured, install the metal mold coated with a release agent in place through the repair device, ensure that there is excess polymer composite material extruded, and then remove it with tools.

[0038] Step Five: Curing; It can be demolded and used after curing at room temperature for 24 hours; Using methods such as hot air guns, iodine tungsten lamps, or steam heating conduction for forced curing can shorten the curing time. For every 11°C increase in temperature, the curing time is shortened by half, but the increased temperature shall not exceed the bearing temperature of the repair surface.

[0039] In this embodiment: Through the metal mold, the excess material is extruded, making the material coated on the surface of the tapered shaft 8 uniform and flat, facilitating the repair of the wear on the shaft head of the tapered shaft 8.

[0040] Please refer specifically to Figures 1 to 7 , a device used in a method for repairing shaft head wear, the repair device used in Step Four, which includes a base 1. A roller 2 is installed at the bottom end of the base 1. A mounting seat 3 is slidably connected up and down at the top end of the base 1. An upper mold 4 and a lower mold 5 are installed on the mounting seat 3. The position of the mounting seat 3 is positioned by a positioning mechanism 6. The upper mold 4 and the lower mold 5 are displaced by a moving mechanism 7. The positioning mechanism 6 and the moving mechanism 7 are used to keep the mold and the tapered shaft 8 in the same axis position. The positioning mechanism 6 includes a chute 601, which is symmetrically opened on the outer wall of the mounting seat 3. A sliding rod 602 is slidably connected to the inner wall of the chute 601. A rotating block 603 is rotatably connected to the top end of the mounting seat 3. A first threaded rod 604 is fixedly connected to the bottom end of the rotating block 603. The first threaded rod 604 penetrates through the sliding rod 602. A pushing block 605 extending out of the sliding rod 602 is slidably connected inside the sliding rod 602. A first spring 606 is connected between the pushing block 605 and the sliding rod 602. First spur gears 607 are rotatably connected on both sides of the pushing block 605 inside the sliding rod 602. A positioning plate 608 is fixedly connected to the outer wall of the first spur gear 607.

[0041] In this embodiment: The base 1 is moved through the roller 2. The rotating block 603 is rotated. The rotation of the rotating block 603 drives the first threaded rod 604 to rotate. The rotation of the first threaded rod 604 drives the sliding rod 602 to slide in the chute 601. The two sliding rods 602 are displaced towards the tapered shaft 8. During this process, the tapered shaft 8 contacts the pushing block 605, pushing the pushing block 605 to displace, squeezing the first spring 606. The displacement of the pushing block 605 drives the first spur gear 607 to rotate. The rotation of the first spur gear 607 drives the positioning plate 608 to rotate, so that a plurality of positioning plates 608 and the pushing block 605 are simultaneously in contact with the tapered shaft 8, and the position between the tapered shaft 8 and the mounting seat 3 is positioned. After completing the position positioning between the tapered shaft 8 and the mounting seat 3, a spacer or a restart airbag can be inserted between the mounting seat 3 and the tapered shaft 8 to fix the position, and the weight of the mounting seat 3 and its connected components is forced to be applied to the tapered shaft 8, affecting the operation safety and the straightness of the tapered shaft 8.

[0042] Please refer specifically toFigures 5 to 7 , the moving mechanism 7 includes a movable groove 701 which is opened on the outer wall of the mounting seat 3. The movable groove 701 is located on one side of the sliding groove 601. A movable seat 702 is slidably connected to the inner wall of the movable groove 701. One end of the mounting seat 3 is provided with a motor 703. The output end of the motor 703 is connected to a second threaded rod 704. The second threaded rod 704 penetrates through the movable seat 702. A displacement groove 705 is opened at one end of the movable seat 702. Displacement plates 706 are symmetrically and slidably connected to the inner wall of the displacement groove 705. A rotating column 707 is rotatably connected to the top end of the movable seat 702. A third threaded rod 708 is fixedly connected to the bottom end of the rotating column 707. The third threaded rod 708 penetrates through the displacement plate 706. Connecting blocks 709 are fixedly connected to the outer walls of the upper die 4 and the lower die 5. A fixing groove 710 is opened on the outer wall of the connecting block 709. The moving mechanism 7 further includes a connecting groove 711 which is opened on the outer wall of the displacement plate 706. A fixing block 712 extending into the inner cavity of the connecting groove 711 is slidably connected inside the displacement plate 706. A second spring 713 is connected between the fixing block 712 and the displacement plate 706. A second straight gear 714 is rotatably connected to the outer wall of the fixing block 712 inside the displacement plate 706. A cross plate 715 is slidably connected to the outer wall of the second straight gear 714 inside the displacement plate 706. The cross plate 715 extends out of the displacement plate 706. Connecting plates 716 are fixedly connected to both sides of the upper die 4. A reinforcing hole 717 is opened on the outer wall of the connecting plate 716. A ratchet 718 is fixedly connected to the outer wall of the first threaded rod 604. A clamping block 719 is slidably connected inside the mounting seat 3. The clamping block 719 is in contact with the ratchet 718. A third spring 720 is connected between the clamping block 719 and the mounting seat 3. A displacement frame 721 is slidably connected to one side of the clamping block 719 inside the mounting seat 3. A fourth spring 722 is connected between the displacement frame 721 and the mounting seat 3. One end of the displacement frame 721 extends into the inner cavity of the movable groove 701.

[0043] In this embodiment: Before installing the upper die 4 and the lower die 5, a release agent needs to be applied to the forming working surface in advance; when installing the upper die 4 and the lower die 5, push the cross plate 715 to displace. The displacement of the cross plate 715 drives the second straight gear 714 to rotate. The rotation of the second straight gear 714 drives the fixing block 712 to displace out of the connecting groove 711, squeezing the second spring 713. Insert the connecting block 709 into the connecting groove 711, and then release the cross plate 715. The fixing block 712 is displaced and inserted into the fixing groove 710 under the elastic force of the second spring 713, fixing the connecting block 709 in the connecting groove 711. Fix the upper die 4 and the lower die 5 in the same fixing manner.

[0044] After the upper mold 4 and the lower mold 5 are installed, rotate the rotating column 707. The rotation of the rotating column 707 drives the third threaded rod 708 to rotate. The rotation of the third threaded rod 708 drives the displacement plate 706 to slide in the displacement groove 705. The two displacement plates 706 approach each other and displace to drive the upper mold 4 and the lower mold 5 to approach each other. After the upper mold 4 and the lower mold 5 are closed, the mold and the tapered shaft 8 are in the same axial position. Then, start the motor 703. The operation of the motor 703 drives the second threaded rod 704 to rotate. The rotation of the second threaded rod 704 drives the movable seat 702 to slide in the movable groove 701. The displacement of the movable seat 702 drives the upper mold 4 and the lower mold 5 to displace synchronously. The upper mold 4 and the lower mold 5 displace towards the tapered shaft 8, and the metal mold extrudes the excess material on the tapered surface of the tapered shaft 8, making the material coated on the surface of the tapered shaft 8 uniform and flat.

[0045] When the movable seat 702 is located at the end of the movable groove 701 away from the tapered shaft 8, the movable seat 702 contacts the displacement frame 721, pushes the displacement frame 721 to displace, squeezes the fourth spring 722, the displacement of the displacement frame 721 pushes the block 719 to displace and separate from the ratchet 718, squeezes the third spring 720. At this time, the first threaded rod 604 can be rotated by the rotating block 603. When the movable seat 702 drives the upper mold 4 and the lower mold 5 to displace towards the tapered shaft 8, the block 719 is engaged with the ratchet 718 under the elastic force of the third spring 720, preventing the first threaded rod 604 from rotating in the reverse direction, so that the sliding rod 602 cannot displace in the reverse direction, preventing the sliding rod 602 from loosening during the forming repair, causing the positions of the upper mold 4 and the lower mold 5 to shift, and affecting the forming repair of the tapered shaft 8.

[0046] Please refer specifically to Figures 1 to 4 , the inner wall of the chute 601 fits with the outer wall of the sliding rod 602. The outer wall of the sliding rod 602 is provided with a first threaded hole, and the outer wall of the first threaded rod 604 is symmetrically provided with threads matching the first threaded hole.

[0047] In this embodiment: Rotate the rotating block 603. The rotation of the rotating block 603 drives the first threaded rod 604 to rotate. The rotation of the first threaded rod 604 drives the sliding rod 602 to slide in the chute 601.

[0048] Please refer specifically to Figures 1 to 4 , the outer wall of the pushing block 605 is symmetrically provided with first tooth grooves, and the first tooth grooves are engaged with the first spur gear 607.

[0049] In this embodiment: The two sliding rods 602 are displaced towards the tapered shaft 8. During this process, the tapered shaft 8 contacts the pushing block 605, pushing the pushing block 605 to displace, squeezing the first spring 606. The displacement of the pushing block 605 drives the first spur gear 607 to rotate, and the rotation of the first spur gear 607 drives the positioning plate 608 to rotate.

[0050] Please refer specifically to Figures 5 to 7 , a second threaded hole is provided on the outer wall of the movable seat 702, which is matched with the second threaded rod 704, and the inner wall of the movable groove 701 is attached to the outer wall of the movable seat 702.

[0051] In this embodiment: The motor 703 operates to drive the second threaded rod 704 to rotate. The rotation of the second threaded rod 704 drives the movable seat 702 to slide in the movable groove 701, and the displacement of the movable seat 702 drives the upper mold 4 and the lower mold 5 to displace synchronously.

[0052] Please refer specifically to Figures 5 to 7 , the inner wall of the displacement groove 705 is attached to the outer wall of the displacement plate 706, and a third threaded hole is provided on the outer wall of the displacement plate 706. Threads matching the third threaded hole are symmetrically provided on the outer wall of the third threaded rod 708.

[0053] In this embodiment: Rotate the rotating column 707. The rotation of the rotating column 707 drives the third threaded rod 708 to rotate. The rotation of the third threaded rod 708 drives the displacement plate 706 to slide in the displacement groove 705. The two displacement plates 706 approach each other to displace, driving the upper mold 4 and the lower mold 5 to approach each other.

[0054] Please refer specifically to Figures 5 to 7 , the inner wall of the connection groove 711 is attached to the outer wall of the connection block 709, the inner wall of the fixing groove 710 is attached to the outer wall of one end of the fixing block 712, and second tooth grooves are provided on the outer walls of the cross plate 715 and the fixing block 712, which are meshed with the second spur gear 714.

[0055] In this embodiment: Push the cross plate 715 to displace. The displacement of the cross plate 715 drives the second spur gear 714 to rotate. The rotation of the second spur gear 714 drives the fixing block 712 to displace out of the connection groove 711, squeezing the second spring 713. Insert the connection block 709 into the connection groove 711, and then release the cross plate 715. The fixing block 712 is displaced by the elastic force of the second spring 713 and inserted into the fixing groove 710 to fix the connection block 709 in the connection groove 711.

[0056] Please refer specifically to Figures 5 to 7 , one end of the latch 719 is engaged with the ratchet 718, and a slope is provided at one end of the displacement frame 721 located in the inner cavity of the movable groove 701.

[0057] In this embodiment: When the movable seat 702 is located at the end of the movable slot 701 away from the tapered shaft 8, the movable seat 702 contacts the displacement frame 721, pushing the displacement frame 721 to displace, squeezing the fourth spring 722. The displacement of the displacement frame 721 pushes the latch 719 to displace and separate from the ratchet wheel 718, squeezing the third spring 720. At this time, the first threaded rod 604 can be rotated by the rotating block 603. When the movable seat 702 drives the upper mold 4 and the lower mold 5 to displace towards the tapered shaft 8, the latch 719 is engaged with the ratchet wheel 718 under the elastic force of the third spring 720.

[0058] The above are only the preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, making equivalent substitutions or changes should be covered within the protection scope of the present invention.

Claims

1. A method for repairing the wear of the shaft head, characterized in that, The specific steps are as follows: Step 1: Mold processing; manufacture a standard split mold that matches the shaft head model of the taper shaft (8). Step 2: Surface treatment; use a welding torch to bake off the oil until there are no sparks on the repair surface; use an electric grinding wheel to polish the repair surface, grind off the oxide layer and impurities on the repair surface to expose the metallic luster; thoroughly clean the surface with acetone. Step 3: Applying materials; use a squeegee to apply a polymer composite material. The first layer should be thin and compacted to avoid air holes, and then apply it all. Step 4: Forming and repairing; when the polymer composite material has not cured, install the metal mold coated with a release agent in place through the repair device, ensure that there is excess polymer composite material extruded, and remove it with tools. Step 5: Curing; it can be demolded and used after curing at room temperature for 24 hours; using methods such as a hot air gun, an iodine tungsten lamp or steam heating conduction for forced curing can shorten the curing time. For every 11°C increase in temperature, the curing time is shortened by half, but the temperature increase should not exceed the temperature that the repair surface can withstand. The repair device used in Step 4 includes a base (1). A roller (2) is installed at the bottom end of the base (1). An installation seat (3) is slidably connected up and down at the top end of the base (1). An upper mold (4) and a lower mold (5) are installed on the installation seat (3). The position of the installation seat (3) is positioned by a positioning mechanism (6). The upper mold (4) and the lower mold (5) perform displacement operations through a moving mechanism (7). The positioning mechanism (6) and the moving mechanism (7) are used to keep the mold and the taper shaft (8) in the same axial center position. The positioning mechanism (6) includes a chute (601). The chute (601) is symmetrically opened on the outer wall of the installation seat (3). A sliding rod (602) is slidably connected to the inner wall of the chute (601). A rotating block (603) is rotatably connected to the top end of the installation seat (3). A first threaded rod (604) is fixedly connected to the bottom end of the rotating block (603). The first threaded rod (604) penetrates through the sliding rod (602). A pushing block (605) extending out of the sliding rod (602) is slidably connected inside the sliding rod (602). A first spring (606) is connected between the pushing block (605) and the sliding rod (602). First spur gears (607) are rotatably connected on both sides of the pushing block (605) inside the sliding rod (602). A positioning plate (608) is fixedly connected to the outer wall of the first spur gear (607). The moving mechanism (7) includes a movable groove (701) which is opened on the outer wall of the mounting base (3). The movable groove (701) is located on one side of the sliding groove (601). The inner wall of the movable groove (701) is slidably connected with a movable seat (702). One end of the mounting base (3) is equipped with a motor (703). The output end of the motor (703) is connected with a second threaded rod (704). The second threaded rod (704) penetrates through the movable seat (702). One end of the movable seat (702) is provided with a displacement groove (705). The inner wall of the displacement groove (705) is symmetrically and slidably connected with displacement plates (706). The top end of the movable seat (702) is rotatably connected with a rotating column (707). The bottom end of the rotating column (707) is fixedly connected with a third threaded rod (708). The third threaded rod (708) penetrates through the displacement plates (706). Connecting blocks (709) are fixedly connected to the outer walls of the upper mold (4) and the lower mold (5). Fixing grooves (710) are opened on the outer walls of the connecting blocks (709).

2. The device used in the method for repairing the wear of the shaft head according to claim 1, characterized in that, The moving mechanism (7) further includes a connecting groove (711) which is opened on the outer wall of the displacement plate (706). A fixing block (712) extending into the inner cavity of the connecting groove (711) is slidably connected inside the displacement plate (706). A second spring (713) is connected between the fixing block (712) and the displacement plate (706). A second straight gear (714) is rotatably connected to the outer wall of the fixing block (712) inside the displacement plate (706). A cross plate (715) is slidably connected to the outer wall of the second straight gear (714) inside the displacement plate (706). The cross plate (715) extends out of the displacement plate (706). Connecting plates (716) are fixedly connected to both sides of the upper mold (4). Reinforcing holes (717) are opened on the outer walls of the connecting plates (716). A ratchet wheel (718) is fixedly connected to the outer wall of the first threaded rod (604). A clamping block (719) is slidably connected inside the mounting base (3). The clamping block (719) is in contact with the ratchet wheel (718). A third spring (720) is connected between the clamping block (719) and the mounting base (3). A displacement frame (721) is slidably connected to one side of the clamping block (719) inside the mounting base (3). A fourth spring (722) is connected between the displacement frame (721) and the mounting base (3). One end of the displacement frame (721) extends into the inner cavity of the movable groove (701).

3. The device used for the method of repairing shaft head wear according to claim 1, characterized in that, The inner wall of the sliding groove (601) is in fit with the outer wall of the sliding rod (602). A first threaded hole is opened on the outer wall of the sliding rod (602). Threads matching the first threaded hole are symmetrically opened on the outer wall of the first threaded rod (604).

4. The device used for the method of repairing shaft head wear according to claim 1, characterized in that, First tooth grooves are symmetrically opened on the outer wall of the pushing block (605). The first tooth grooves are meshed with the first straight gear (607).

5. The device used in the method for repairing the wear of the shaft head according to claim 2, characterized in that, The outer wall of the movable seat (702) is provided with a second threaded hole, which is matched with the second threaded rod (704), and the inner wall of the movable groove (701) is attached to the outer wall of the movable seat (702).

6. The device used for the method of repairing shaft head wear according to claim 2, characterized in that, The inner wall of the displacement groove (705) is attached to the outer wall of the displacement plate (706), the outer wall of the displacement plate (706) is provided with a third threaded hole, and the outer wall of the third threaded rod (708) is symmetrically provided with threads that are matched with the third threaded hole.

7. The device used for the method of repairing shaft head wear according to claim 2, characterized in that, The inner wall of the connection groove (711) is attached to the outer wall of the connection block (709), the inner wall of the fixed groove (710) is attached to the outer wall of one end of the fixed block (712), and the outer walls of the cross plate (715) and the fixed block (712) are both provided with second tooth grooves, which are meshed with the second spur gear (714).

8. The device used for the method of repairing shaft head wear according to claim 2, characterized in that, One end of the clamping block (719) is engaged with the ratchet wheel (718), and one end of the displacement frame (721) located in the inner cavity of the movable groove (701) is provided with an inclined surface.

Images