A reducer oil seal removal tool and use method

Abstract

The present application relates to a reducer oil seal removal tool and a method of using the same, and belongs to the technical field of oil seal removal tools. It includes: an outer cylinder, which is a hollow cylindrical tube structure, and a plurality of radial holes are opened on the side wall of one end of the outer cylinder; a plurality of movable claws, which are provided with a plurality of movable claws, and the plurality of movable claws are respectively located in the radial holes and reciprocate along the radial direction of the outer cylinder; an inner rotating body, which is coaxially located inside the outer cylinder and is connected to the plurality of movable claws, and the inner rotating body rotates in the outer cylinder to make the plurality of movable claws move in directions of approaching and moving away from each other. The present application can adjust the extension length of the movable claws through the inner rotating body to adapt to oil seals of different specifications, and can smoothly and smoothly remove the damaged oil seal without damaging the inner diameter surface of the reducer oil seal installation.

Description

Technical Field

[0001] The present application relates to the technical field of oil seal removal tools, and in particular to a reducer oil seal removal tool and a method of using the same. Background Art

[0002] The reducer is an important component in the vehicle's powertrain system. Its function is to reduce the speed of the driving force output by the powertrain system, increase the torque, and then transmit it to the drive wheels to drive the vehicle. The reducer and the drive wheels are connected through a half-shaft transmission, and the half-shaft can extend into the reducer through the output end hole on the reducer housing.

[0003] In order to ensure the sealing of the connection between the half shaft and the reducer, an oil seal is usually installed at the output hole of the reducer. The oil seal is usually pre-installed in the output hole of the reducer, and then forms an interference fit with the half shaft during vehicle assembly. If the oil seal is scratched during the transportation of the reducer or the assembly of the vehicle, the sealing effect will be lost. Therefore, when the reducer leaves the factory, the oil seal needs to be protected and the opening of the oil seal needs to be sealed.

[0004] In the related art, the oil seal is a consumable part. When replacing a damaged oil seal, the oil seal needs to be taken out from the output end hole of the reducer. When removing the oil seal, it is difficult to remove the oil seal, which can easily damage the inner diameter surface of the reducer housing oil seal installation, resulting in poor sealing or eccentricity of the secondary assembled oil seal, which cannot achieve the sealing effect, thus causing huge losses for the entire reducer to be scrapped. Summary of the invention

[0005] The embodiment of the present application provides a reducer oil seal removal tool and a method of use to solve the problem in the related art that the oil seal is difficult to remove and the inner diameter surface of the reducer housing oil seal installation is easily damaged.

[0006] A first aspect of an embodiment of the present application provides a reducer oil seal removal tool, comprising:

[0007] An outer cylinder, wherein the outer cylinder is a hollow cylindrical tube structure, and a plurality of radial holes are opened on the side wall at one end of the outer cylinder;

[0008] A movable claw, wherein a plurality of movable claws are provided, and the plurality of movable claws are respectively located in the radial holes and reciprocate along the radial direction of the outer cylinder;

[0009] The inner rotating body is coaxially located inside the outer cylinder and connected to the plurality of movable claws. The inner rotating body rotates on the outer cylinder to move the plurality of movable claws in directions of approaching and moving away from each other.

[0010] In some embodiments: one end of the inner rotating body close to the multiple movable claws is provided with an upper plane thread connected to the movable claws threadedly, and one end of the movable claw close to the inner rotating body is provided with a lower plane thread connected to the inner rotating body threadedly.

[0011] In some embodiments: a guide protrusion slidably connected to a plurality of movable claws is provided on the side wall of one end of the inner rotating body, and an arc surface slidably connected to the movable claws and forcing the movable claws to reciprocate along the radial direction of the outer cylinder is provided on the guide protrusion.

[0012] In some embodiments: the guide protrusion is a permanent magnet, the movable claw is a ferromagnetic material attracted by the guide protrusion, the outer cylinder is a non-ferromagnetic material, and the inner rotating body drives the guide protrusion to rotate forward and reversely to drive the multiple movable claws to move in directions close to and away from each other.

[0013] In some embodiments: a guide cone surface slidably connected to a plurality of movable claws is provided on the side wall of one end of the inner rotating body, and an arc surface slidably connected to the movable claws and forcing the movable claws to reciprocate along the radial direction of the outer cylinder is provided on the guide cone surface.

[0014] In some embodiments: the inner rotating body and the outer cylinder are connected by a threaded connection to enable the inner rotating body to move axially in the outer cylinder, a permanent magnetic material layer is provided on the guide cone surface, the movable claw is a ferromagnetic material attracted by the permanent magnetic material layer, and the outer cylinder is a non-ferromagnetic material.

[0015] In some embodiments: a bearing is provided between the inner rotating body and the outer cylinder, the bearing is provided with two and respectively located at the two ends of the inner rotating body, and the inner rotating body is axially positioned in the outer cylinder, and a rotating handle for rotating the inner rotating body is provided at the end of the inner rotating body away from the movable claw.

[0016] In some embodiments: a fixed support is threadedly connected to the outer wall of the outer cylinder, a plurality of legs are provided on the fixed support, an adjusting screw is threadedly connected to each of the legs, and a handle for rotating the outer cylinder is provided on the outer cylinder.

[0017] In some embodiments: an end of the outer cylinder close to the movable claw is provided with an end cover that closes the outer cylinder, and a plurality of the movable claws are attached to and slidably connected with the end cover.

[0018] A second aspect of the embodiments of the present application provides a method for using a reducer oil seal removal tool, the method using the reducer oil seal removal tool described in any of the above embodiments, the method comprising the following steps:

[0019] The outer cylinder is extended into the oil seal position in the oil seal installation hole of the reducer, and the inner rotating body is rotated to make the plurality of movable claws move away from each other;

[0020] After the multiple movable claws extend from the outer cylinder and abut against the end surface of the oil seal frame, the fixed support is rotated, and the multiple legs on the fixed support are fitted with the reducer housing;

[0021] When the outer cylinder is not coaxial with the oil seal mounting hole, adjust the adjusting screw on the support foot to make the outer cylinder coaxial with the oil seal mounting hole;

[0022] The handle is turned to rotate the outer cylinder relative to the fixed support. Under the support of the fixed support, the outer cylinder uses a plurality of movable claws to pull the oil seal out of the oil seal installation hole.

[0023] The beneficial effects of the technical solution provided by this application include:

[0024] The embodiment of the present application provides a reducer oil seal removal tool and a method of use. The reducer oil seal removal tool of the present application is provided with an outer cylinder, which is a hollow cylindrical tube structure, and a plurality of radial holes are opened on the side wall at one end of the outer cylinder; a plurality of movable claws are provided, and the plurality of movable claws are respectively located in the radial holes and reciprocate along the radial direction of the outer cylinder; an inner rotating body, which is coaxially located inside the outer cylinder and is connected to the plurality of movable claws, and the inner rotating body rotates in the outer cylinder to make the plurality of movable claws move in directions approaching and away from each other.

[0025] Therefore, the reducer oil seal removal tool of the present application is provided with movable claws in the radial holes of the outer cylinder, and the movable claws can move in directions approaching and moving away from each other under the rotation of the inner rotating body, so that the extension length of multiple movable claws can be adjusted, thereby adapting to oil seals of different sizes. When the multiple movable claws are extended to a set length and fit with the end face of the oil seal, the oil seal to be replaced is pulled out of the oil seal mounting hole of the reducer by pulling the outer cylinder. The present application can adjust the extension length of the movable claws through the inner rotating body to adapt to oil seals of different specifications, and can smoothly and smoothly remove damaged oil seals without damaging the inner diameter surface of the reducer oil seal installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0027] Figure 1 This is a schematic diagram of the structure of an embodiment of the present application;

[0028] Figure 2 A structural cross-sectional view of an embodiment of the present application;

[0029] Figure 3 This is a schematic diagram of the structure of the outer cylinder of the embodiment of the present application;

[0030] Figure 4 It is a schematic diagram of the structure of the rotating body in the embodiment of the present application;

[0031] Figure 5 This is a schematic diagram of the structure of the movable claw of the embodiment of the present application;

[0032] Figure 6 This is a schematic diagram of the structure of the fixed support in the embodiment of the present application;

[0033] Figure 7 A top view of the structure of another embodiment of the present application;

[0034] Figure 8 This is a structural cross-sectional view of yet another embodiment of the present application.

[0035] Reference numerals:

[0036] 1. Outer cylinder; 2. Movable claw; 3. Inner rotating body; 4. Fixed support; 5. Adjusting screw; 6. Handle; 7. Rotating handle; 8. Bearing; 9. End cover; 11. Radial hole; 21. Lower plane thread; 31. Upper plane thread; 32. Limiting ring; 33. Guide protrusion; 34. Guide cone; 41. Threaded hole; 42. Support foot. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0038] The embodiment of the present application provides a reducer oil seal removal tool and a method of use, which can solve the problem in the related art that the oil seal is difficult to remove and the inner diameter surface of the reducer housing oil seal installation is easily damaged.

[0039] See also Figures 1 to 3 , Figure 7 and Figure 8 As shown, the first aspect of the embodiment of the present application provides a reducer oil seal removal tool, comprising:

[0040] The outer cylinder 1 is a hollow cylindrical tube structure, and a plurality of radial holes 11 are opened on the side wall at one end of the outer cylinder 1. The outer cylinder 1 of the embodiment of the present application can be made of a stainless steel tube or an aluminum alloy tube. The radial holes 11 on the side wall of the outer cylinder 1 are preferably but not limited to three, and the three radial holes 11 are evenly distributed on the circumference of the side wall of the outer cylinder 1.

[0041] The number of movable claws 2 is the same as the number of radial holes 11. In the embodiment of the present application, three movable claws 2 are provided. The three movable claws 2 are respectively located in the radial holes 11 of the outer cylinder 1, and reciprocate along the radial direction of the outer cylinder 1, thereby extending or retracting the movable claws 2 into the outer cylinder 1.

[0042] The inner rotating body 3 is coaxially located inside the outer cylinder 1 and connected to the three movable claws 2. The inner rotating body 3 and the three movable claws 2 can be connected by sliding or threading. The inner rotating body 3 rotates inside the outer cylinder 1 to move the three movable claws 2 in directions of approaching and moving away from each other, thereby adapting and disassembling oil seals of different sizes.

[0043] The reducer oil seal removal tool of the embodiment of the present application is provided with movable claws 2 in the radial holes 11 of the outer cylinder 1, and the movable claws 2 can move in directions approaching and away from each other under the rotation of the inner rotating body 3, so that the extension length of the multiple movable claws 2 can be adjusted, thereby adapting to oil seals of different sizes.

[0044] When the multiple movable claws 2 extend to a set length and fit the end face of the oil seal, the oil seal to be replaced can be pulled out from the oil seal mounting hole of the reducer by pulling the outer cylinder 1. The present application can adjust the extension length of the movable claws 2 through the inner rotating body 3 to adapt to oil seals of different specifications, and can smoothly and smoothly remove the damaged oil seal without damaging the inner diameter surface of the reducer oil seal installation.

[0045] In some alternative embodiments: See Figures 1 to 5 As shown, an embodiment of the present application provides a reducer oil seal removal tool, wherein an end of an inner rotating body 3 of the reducer oil seal removal tool close to the three movable claws 2 is provided with an upper plane thread 31 threadedly connected to the movable claws 2, and an end of the movable claw 2 close to the inner rotating body 3 is provided with a lower plane thread 21 threadedly connected to the inner rotating body 3.

[0046] The end of the inner rotating body 3 of the embodiment of the present application close to the three movable claws 2 and the end of the movable claws 2 close to the inner rotating body 3 are threadedly connected through the upper plane thread 31 and the lower plane thread 21. When the inner rotating body 3 is rotated forward and reversely, the three movable claws 2 move in directions approaching and away from each other under the cooperation of the upper plane thread 31 and the lower plane thread 21, thereby adapting to oil seals of different sizes.

[0047] The upper plane thread 31 and the lower plane thread 21 are both Archimedean spiral curves that cooperate with each other. When the inner rotating body 3 rotates forward and reversely, the three movable claws 2 move in the axial direction close to and away from the inner rotating body 3 under the mutual cooperation of the upper plane thread 31 and the lower plane thread 21, thereby realizing the telescopic movement of the movable claws 2 in the radial hole 11 of the outer cylinder 1.

[0048] In some alternative embodiments: See Figure 7 As shown, the embodiment of the present application provides a reducer oil seal removal tool, and the side wall of one end of the inner rotating body 3 of the reducer oil seal removal tool is provided with three guide protrusions 33 respectively connected with the three movable claws 2 in a sliding manner. The guide protrusions 33 are provided with arc surfaces that are connected with the movable claws 2 in a sliding manner and force the movable claws 2 to reciprocate along the radial direction of the outer cylinder 1.

[0049] In the embodiment of the present application, three guide protrusions 33 are provided on the side wall at one end of the inner rotating body 3, which are respectively slidably connected to the three movable claws 2, and the guide protrusions 33 gradually protrude outward along the radial direction of the inner rotating body 3. One end of the movable claw 2 is slidably connected to the arc surface of the guide protrusion 33, and when the inner rotating body 3 rotates, the movable claw 2 is gradually forced to extend outward from the outer cylinder 1.

[0050] The connecting line of the three guide protrusions 33 on the outer periphery of the rotating body 3 forms three valley peaks and three valley bottoms. When one end of the movable claw 2 is located at the valley peak position of the guide protrusion 33, the movable claw 2 extends to the maximum length. When one end of the movable claw 2 is located at the valley bottom position between the two guide protrusions 33, the movable claw 2 extends to the shortest length.

[0051] In some alternative embodiments: See Figure 7 As shown, the embodiment of the present application provides a reducer oil seal removal tool, wherein the guide protrusion 33 of the reducer oil seal removal tool is a permanent magnet, the movable claw 2 is a ferromagnetic material attracted by the guide protrusion 33, and the outer cylinder 1 is a non-ferromagnetic material. The inner rotating body 3 drives the guide protrusion 33 to rotate forward and reversely to drive the multiple movable claws 2 to move in directions of approaching and moving away from each other.

[0052] The guide protrusion 33 of the embodiment of the present application is a permanent magnet, the movable claw 2 is a ferromagnetic material attracted by the guide protrusion 33, and the outer cylinder 1 is a non-ferromagnetic material. The guide protrusion 33 attracts the movable claw 2 so that the movable claw 2 can always fit with the guide protrusion 33. When the inner rotating body 3 rotates in the reverse direction, the guide protrusion 33 retracts the movable claw 2 into the outer cylinder 1 by attracting the movable claw 2.

[0053] In order to be able to retract the movable claw 2 into the outer cylinder 1 in the embodiment of the present application, in addition to the above-mentioned use of magnetic attraction, technicians in this field can also set a sliding track connection between the movable claw 2 and the guide protrusion 33. When the guide protrusion 33 rotates, the movable claw 2 is driven to retract into the outer cylinder 1 under the sliding connection of the sliding track.

[0054] In some alternative embodiments: See Figure 8 As shown, the embodiment of the present application provides a reducer oil seal removal tool, and a guide cone surface 34 is provided on the side wall of one end of the inner rotating body 3 of the reducer oil seal removal tool, which is slidably connected to a plurality of movable claws 2. The guide cone surface 34 is provided with an arc surface that is slidably connected to the movable claws 2 and forces the movable claws 2 to reciprocate along the radial direction of the outer cylinder 1.

[0055] In the embodiment of the present application, a guide cone 34 is provided on the side wall at one end of the inner rotating body 3, which is slidably connected to the three movable claws 2. The guide cone 34 gradually narrows downward along the axial direction of the inner rotating body 3. One end of the movable claw 2 is slidably connected to the arc surface of the guide cone 34, and when the inner rotating body 3 moves axially in the outer cylinder 1, the movable claw 2 is gradually forced to extend out of the outer cylinder 1.

[0056] When one end of the movable claw 2 is located at the maximum cross-sectional position of the guide cone 34, the movable claw 2 extends to the maximum length, and when one end of the movable claw 2 is located at the minimum cross-sectional position of the guide cone 34, the movable claw 2 extends to the shortest length.

[0057] In some alternative embodiments: See Figure 8 As shown, an embodiment of the present application provides a reducer oil seal removal tool, wherein the inner rotating body 3 and the outer cylinder 1 of the reducer oil seal removal tool are connected via threads so that the inner rotating body 3 can move axially in the outer cylinder 1, a permanent magnetic material layer is provided on the guide cone surface 34, the movable claw 2 is a ferromagnetic material attracted by the permanent magnetic material layer, and the outer cylinder is a non-ferromagnetic material.

[0058] The guide cone 34 of the embodiment of the present application is provided with a permanent magnetic material layer, the movable claw 2 is a ferromagnetic material attracted by the permanent magnetic material layer, and the outer cylinder 1 is a non-ferromagnetic material. The permanent magnetic material layer attracts the movable claw 2 so that the movable claw 2 can always fit with the guide cone 34. When the inner rotating body 3 rotates forward and reversely, the guide cone 34 attracts the movable claw 2 through the permanent magnetic material layer to extend the movable claw 2 out of the outer cylinder 1 or retract it into the outer cylinder 1.

[0059] In order to be able to extend the movable claw 2 out of the outer cylinder 1 or retract it into the outer cylinder 1 in the embodiment of the present application, in addition to the above-mentioned use of magnetic attraction, technical personnel in this field can also set a sliding track connection between the movable claw 2 and the guide cone 34. When the guide cone 34 moves up and down, the movable claw 2 is driven to extend out of the outer cylinder 1 or retract into the outer cylinder 1 under the action of the sliding connection of the sliding track.

[0060] In some alternative embodiments: See Figures 1 to 4 As shown, the embodiment of the present application provides a reducer oil seal removal tool, wherein a bearing 8 is provided between the inner rotating body 3 and the outer cylinder 1 of the reducer oil seal removal tool, and two bearings 8 are provided and are respectively located at the two ends of the inner rotating body 3, and the inner rotating body 3 is axially positioned in the outer cylinder 1. A rotating handle 7 for rotating the inner rotating body 3 is provided at one end of the inner rotating body 3 away from the movable claw 2.

[0061] In the embodiment of the present application, a bearing 8 is provided between the inner rotating body 3 and the outer cylinder 1 to realize a coaxial connection between the inner rotating body 3 and the outer cylinder 1, and the inner rotating body 3 can freely rotate relative to the outer cylinder 1. Stop rings 32 are provided at both ends of the inner rotating body 3, and the two stop rings 32 are used to separate the two bearings 8 from each other. A retaining ring for positioning the two bearings 8 in the outer cylinder 1 is also provided in the outer cylinder 1, so that the two bearings are axially positioned in the outer cylinder 1.

[0062] In some alternative embodiments: See Figure 1 , Figure 2 and Figure 6 As shown, the embodiment of the present application provides a reducer oil seal removal tool, wherein a fixing support 4 is threadedly connected to the outer wall of the outer cylinder 1 of the reducer oil seal removal tool, and a threaded hole 41 threadedly connected to the outer cylinder 1 is provided on the fixing support 4. A plurality of legs 42 are provided on the fixing support 4, and an adjusting screw 5 is threadedly connected to each leg 42, and a handle 6 for rotating the outer cylinder 1 is provided on the outer cylinder 1.

[0063] An end cap 9 for closing the outer cylinder 1 is provided at one end of the outer cylinder 1 close to the movable claw 2, and the three movable claws 2 are attached to each other and slidably connected with the end cap 9. In the embodiment of the present application, a fixed support 4 is threadedly connected to the outer wall of the outer cylinder 1, and a threaded hole 41 threadedly connected to the outer cylinder 1 is provided on the fixed support 4. The fixed support 4 is also provided with a plurality of legs 42, and the plurality of legs 42 are used to coaxially position the outer cylinder 1 in the oil seal mounting hole of the reducer through the fixed support 4.

[0064] Each support leg 42 is threadedly connected with an adjusting screw 5, which is used to stably position the fixed support 4 on the reducer housing by extending or shortening the adjusting screw 5 when the support leg 42 cannot stably contact the reducer housing. The outer cylinder 1 is provided with a handle 6 for rotating the outer cylinder 1. The worker holds the handle 6 to rotate the outer cylinder 1, and the outer cylinder 1 drives the oil seal to pull out the oil seal through the movable claw 2, so as to realize the smooth and smooth removal of the damaged oil seal without damaging the reducer oil seal installation inner diameter surface.

[0065] See also Figures 1 to 5 As shown, a second aspect of the embodiment of the present application provides a method for using a reducer oil seal removal tool, the method using the reducer oil seal removal tool described in any of the above embodiments, the method comprising the following steps:

[0066] Step 1, insert the outer cylinder 1 into the oil seal position in the oil seal installation hole of the reducer, use the rotating handle 7 to rotate the inner rotating body 3, and the end of the inner rotating body 3 close to the three movable claws 2 and the end of the movable claw 2 close to the inner rotating body 3 are threadedly connected through the upper plane thread 31 and the lower plane thread 21;

[0067] When the inner rotating body 3 rotates forward and reversely, the three movable claws 2 move in directions of approaching and moving away from each other under the cooperation of the upper plane thread 31 and the lower plane thread 21, thereby adapting to oil seals of different sizes.

[0068] Step 2: After the three movable claws 2 extend from the outer cylinder 1 and abut against the end surface of the oil seal frame, the fixed support 4 is rotated, and the multiple legs 42 on the fixed support 4 are all fitted with the reducer housing;

[0069] When the support leg 42 cannot stably contact with the reducer housing, the adjusting screw 5 is extended or shortened to assist the support leg 42 in stably positioning the fixed support 4 on the reducer housing.

[0070] Step 3: When the outer cylinder 1 is not coaxial with the oil seal mounting hole, adjust the adjusting screw 5 on the support foot 42 again to make the outer cylinder 1 coaxial with the oil seal mounting hole, so that when the oil seal is removed, the three movable claws 2 can be evenly stressed to prevent damage to the mounting surface of the oil seal mounting hole.

[0071] Step 4, turn the handle 6 to rotate the outer cylinder 1 relative to the fixed support 4, and under the support of the fixed support 4, the outer cylinder 1 uses the three movable claws 2 to pull the oil seal out of the oil seal installation hole.

[0072] See also Figure 7 As shown, a third aspect of the embodiment of the present application provides a method for using a reducer oil seal removal tool, the method using the reducer oil seal removal tool described in any of the above embodiments, the method comprising the following steps:

[0073] Step 1, insert the outer cylinder 1 into the oil seal position in the oil seal mounting hole of the reducer, use the rotating handle 7 to rotate the inner rotating body 3, and the three guide protrusions 33 at one end of the inner rotating body 3 force the three movable claws 2 to move in directions close to and away from each other, thereby adapting to oil seals of different sizes.

[0074] Step 2: After the three movable claws 2 extend from the outer cylinder 1 and abut against the end surface of the oil seal frame, the fixed support 4 is rotated, and the multiple legs 42 on the fixed support 4 are all fitted with the reducer housing;

[0075] When the support leg 42 cannot stably contact with the reducer housing, the adjusting screw 5 is extended or shortened to assist the support leg 42 in stably positioning the fixed support 4 on the reducer housing.

[0076] Step 3: When the outer cylinder 1 is not coaxial with the oil seal mounting hole, adjust the adjusting screw 5 on the support foot 42 again to make the outer cylinder 1 coaxial with the oil seal mounting hole, so that when the oil seal is removed, the three movable claws 2 can be evenly stressed to prevent damage to the mounting surface of the oil seal mounting hole.

[0077] Step 4, turn the handle 6 to rotate the outer cylinder 1 relative to the fixed support 4, and under the support of the fixed support 4, the outer cylinder 1 uses the three movable claws 2 to pull the oil seal out of the oil seal installation hole.

[0078] See also Figure 8 As shown, a fourth aspect of the embodiment of the present application provides a method for using a reducer oil seal removal tool, the method using the reducer oil seal removal tool described in any of the above embodiments, the method comprising the following steps:

[0079] Step 1, insert the outer cylinder 1 into the oil seal position in the oil seal mounting hole of the reducer, use the rotating handle 7 to rotate the inner rotating body 3, the inner rotating body 3 moves axially in the outer cylinder 1, and the guide cone surface 34 at one end of the inner rotating body 3 forces the three movable claws 2 to move in directions approaching and away from each other, thereby adapting to oil seals of different sizes.

[0080] Step 2: After the three movable claws 2 extend from the outer cylinder 1 and abut against the end surface of the oil seal frame, the fixed support 4 is rotated, and the multiple legs 42 on the fixed support 4 are all fitted with the reducer housing;

[0081] When the support leg 42 cannot stably contact with the reducer housing, the adjusting screw 5 is extended or shortened to assist the support leg 42 in stably positioning the fixed support 4 on the reducer housing.

[0082] Step 3: When the outer cylinder 1 is not coaxial with the oil seal mounting hole, adjust the adjusting screw 5 on the support foot 42 again to make the outer cylinder 1 coaxial with the oil seal mounting hole, so that when the oil seal is removed, the three movable claws 2 can be evenly stressed to prevent damage to the mounting surface of the oil seal mounting hole.

[0083] Step 4, turn the handle 6 to rotate the outer cylinder 1 relative to the fixed support 4, and under the support of the fixed support 4, the outer cylinder 1 uses the three movable claws 2 to pull the oil seal out of the oil seal installation hole.

[0084] How it works

[0085] The embodiment of the present application provides a reducer oil seal removal tool and a method of use. The reducer oil seal removal tool of the present application is provided with an outer cylinder 1, which is a hollow cylindrical tube structure, and a plurality of radial holes 11 are opened on the side wall at one end of the outer cylinder 1; a plurality of movable claws 2 are provided, and the plurality of movable claws 2 are respectively located in the radial holes 11 and reciprocate along the radial direction of the outer cylinder 1; an inner rotating body 3, which is coaxially located inside the outer cylinder 1 and is connected to the plurality of movable claws 2, and the inner rotating body 3 rotates on the outer cylinder 1 to make the plurality of movable claws 2 move in directions of approaching and moving away from each other.

[0086] Therefore, the reducer oil seal removal tool of the present application is provided with movable claws 2 in the radial holes 11 of the outer cylinder 1, and the movable claws 2 can move in directions of approaching and moving away from each other under the rotation of the inner rotating body 3, so that the extension length of the multiple movable claws 2 is adjustable, thereby adapting to oil seals of different sizes. When the multiple movable claws 2 are extended to a set length and fit with the end face of the oil seal, the oil seal to be replaced is pulled out of the oil seal mounting hole of the reducer by pulling the outer cylinder 1. The present application can adjust the extension length of the movable claws 2 through the inner rotating body to adapt to oil seals of different specifications, and can smoothly and smoothly remove the damaged oil seal without damaging the inner diameter surface of the reducer oil seal installation.

[0087] In the description of the present application, it should be noted that the terms "upper", "lower", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application 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 cannot be understood as a limitation on the present application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0088] It should be noted that, in this application, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0089] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

Claims

1. A reducer oil seal removal tool, It is characterized in that include: An outer cylinder (1), the outer cylinder (1) being a hollow cylindrical tube structure, and a plurality of radial holes (11) are provided on a side wall at one end of the outer cylinder (1); A movable claw (2), wherein a plurality of movable claws (2) are provided, and the plurality of movable claws (2) are respectively located in the radial holes (11) and reciprocate along the radial direction of the outer cylinder (1); An inner rotating body (3), the inner rotating body (3) is coaxially located inside the outer cylinder (1) and is connected to the plurality of movable claws (2), the inner rotating body (3) rotates inside the outer cylinder (1) so that the plurality of movable claws (2) move in directions of approaching and moving away from each other; A fixing support (4) is threadedly connected to the outer wall of the outer cylinder (1); the fixing support (4) is provided with a plurality of legs (42) for coaxially positioning the outer cylinder (1) in the oil seal mounting hole of the reducer through the fixing support (4); each of the legs (42) is threadedly connected to an adjusting screw (5) for stably positioning the fixing support (4) on the reducer housing by extending or shortening the adjusting screw (5); The outer cylinder (1) is provided with a handle (6) for rotating the outer cylinder (1); The method for using the reducer oil seal removal tool comprises the following steps: The outer cylinder (1) is inserted into the oil seal position in the oil seal installation hole of the reducer, and the inner rotating body (3) is rotated to move the plurality of movable claws (2) in a direction away from each other; After the plurality of movable claws (2) extend from the outer cylinder (1) and abut against the end surface of the oil seal frame, the fixed support (4) is rotated, and the plurality of legs (42) on the fixed support (4) are fitted with the reducer housing; When the support foot (42) cannot stably contact the reducer housing, the adjusting screw (5) is extended or shortened to assist the support foot (42) in stably positioning the fixed support (4) on the reducer housing; When the outer cylinder (1) and the oil seal mounting hole are not coaxial, the adjusting screw (5) on the support foot (42) is adjusted to make the outer cylinder (1) and the oil seal mounting hole coaxial; The handle (6) is turned to rotate the outer cylinder (1) relative to the fixed support (4); under the support of the fixed support (4), the outer cylinder (1) uses the plurality of movable claws (2) to pull the oil seal out of the oil seal mounting hole.

2. A reducer oil seal removal tool as claimed in claim 1, Features: An end of the inner rotating body (3) close to the plurality of movable claws (2) is provided with an upper plane thread (31) threadedly connected to the movable claws (2), and an end of the movable claws (2) close to the inner rotating body (3) is provided with a lower plane thread (21) threadedly connected to the inner rotating body (3).

3. A reducer oil seal removal tool as claimed in claim 1, Features: A guide protrusion (33) slidably connected to a plurality of movable claws (2) is provided on the side wall at one end of the inner rotating body (3); and an arc surface is provided on the guide protrusion (33) slidably connected to the movable claws (2) and forcing the movable claws (2) to reciprocate along the radial direction of the outer cylinder (1).

4. A reducer oil seal removal tool as claimed in claim 3, Features: The guide protrusion (33) is a permanent magnet, the movable claws (2) are made of ferromagnetic material attracted by the guide protrusion (33), the outer cylinder (1) is made of non-ferromagnetic material, and the inner rotating body (3) drives the guide protrusion (33) to rotate forward and reversely to drive the plurality of movable claws (2) to move in directions approaching or moving away from each other.

5. A reducer oil seal removal tool as claimed in claim 1, Features: A guide cone surface (34) is provided on the side wall of one end of the inner rotating body (3) and is slidably connected to a plurality of movable claws (2). The guide cone surface (34) is provided with an arc surface which is slidably connected to the movable claws (2) and forces the movable claws (2) to reciprocate along the radial direction of the outer cylinder (1).

6. A reducer oil seal removal tool as claimed in claim 5, Features: The inner rotating body (3) and the outer cylinder (1) are connected via threads so that the inner rotating body (3) can move axially inside the outer cylinder (1); a permanent magnetic material layer is provided on the guide cone surface (34); the movable claw (2) is made of ferromagnetic material attracted by the permanent magnetic material layer; and the outer cylinder (1) is made of non-ferromagnetic material.

7. A reducer oil seal removal tool according to any one of claims 1 to 4, Features: A bearing (8) is provided between the inner rotating body (3) and the outer cylinder (1). Two bearings (8) are provided and are respectively located at the two ends of the inner rotating body (3) to axially position the inner rotating body (3) in the outer cylinder (1). A rotating handle (7) for rotating the inner rotating body (3) is provided at one end of the inner rotating body (3) away from the movable claw (2).

8. A reducer oil seal removal tool as claimed in claim 1, Features: An end of the outer cylinder (1) close to the movable claw (2) is provided with an end cover (9) for closing the outer cylinder (1), and a plurality of the movable claws (2) and the end cover (9) are mutually abutted and slidably connected.

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