Combined oil gas seal mounting tool for hub reduction gear

Abstract

The utility model particularly relates to a combined type oil gas seal installation tool for a hub reduction gear. The device comprises a hub reduction gear hub assembly, a fixing support, a rotary moving device and a guide device, and the hub reduction gear hub assembly is cylindrical and used for installing the fixing support; the fixing supports are fixedly arranged at the two ends of the hub assembly of the hub reduction gear and used for fixing the two ends of the rotary moving device to the two ends of the hub reduction gear. The rotary moving device penetrates through center holes of the fixing supports to be arranged on the center line in the hub assembly of the hub reduction gear and used for converting rotary motion into translational motion. Therefore, the oil gas seal is mounted on the hub reduction gear; the guiding device is arranged in the hub reduction gear hub assembly and used for guiding the deflection angle of the rotating and moving device in the horizontal moving process. The tool is small in size and convenient to disassemble, assemble and carry, does not depend on a power supply and a hydraulic tool, can be completed by 1-2 persons, can ensure that the combined oil gas seal is not deflected during installation, and is simple and convenient to operate and safe to use.

Description

Technical Field

[0001] This utility model relates to the field of equipment maintenance tools, specifically to a combined oil-gas seal installation tool for wheel-side reducers. Background Technology

[0002] The oil-gas seal of a wheel-side reducer on a wheeled armored vehicle is a consumable part. Damage to it can lead to problems such as difficulty in inflating the reducer, lubricant leakage, and valve damage. Currently, installing a combined oil-gas seal on a wheel-side reducer requires a power source and hydraulic tools, limiting the operation to repair facilities or environments with such resources, making it unsuitable for field use. Some repair personnel use portable tools like jacks, but this often results in incorrect seal installation, damaging the seal and even scratching the inner surface of the wheel hub. Therefore, there is an urgent need for a portable, easy-to-operate oil-gas seal installation tool that can be used in field environments and ensures correct seal placement.

[0003] A search revealed that Chinese Patent CN221111648U discloses an auxiliary tool for disassembling and assembling oil seals in wheel-side reducers. The tool includes a base, a lead screw, a support frame, an intermediate sleeve, an oil seal pressure plate, and a hand-operated pressure plate. The base serves as the support for the entire tool, with the lead screw mounted on its upper side. The support frame is vertically mounted on the base, and the intermediate sleeve is installed at the lower end of the hand-operated pressure plate, transmitting pressure to the oil seal pressure plate. The oil seal pressure plates are spaced along the height of the support frame and include multiple pressure plate elements corresponding to oil seals of different sizes. The hand-operated pressure plate is located at the top of the support frame and provides downward pressure. This tool allows for a compact and easy-to-operate process for disassembling and assembling oil seals without causing damage to the outer diameter, deformation, or tilting of the oil seal. It is suitable for disassembling and assembling oil seals in wheel-side reducers of various sizes.

[0004] While the above solutions have addressed the inconvenience of installing oil-gas seals to some extent, they still have the following shortcomings:

[0005] The above method involves rotating the hand-operated pressure plate and then using a screw drive to press the oil seal into the wheel-side reducer. This requires the operator to manually align the oil seal and the wheel-side reducer, which demands a high level of experience and precision from the operator and is prone to problems such as tilting during oil seal installation. Utility Model Content

[0006] To address the shortcomings of existing technologies, this utility model provides a combined oil-gas seal installation tool for wheel-side reducers.

[0007] The technical solution of this utility model is as follows:

[0008] A combined oil-gas seal installation tool for a wheel-side reducer includes:

[0009] The wheel hub assembly of the wheel-side reducer is cylindrical and used to install and fix the bracket.

[0010] Fixed brackets are fixedly mounted at both ends of the wheel hub assembly of the wheel-side reducer, and are used to fix the two ends of the rotating moving device to the two ends of the wheel-side reducer.

[0011] A rotary moving device, which passes through the center hole of the fixed bracket and is located on the center line inside the wheel hub assembly of the wheel-side reducer, is used to convert rotational motion into translational motion, thereby installing the oil-gas seal onto the wheel-side reducer;

[0012] A guiding device is provided inside the wheel hub assembly of the wheel-side reducer, and is used to guide the skew angle of the rotating moving device during translation.

[0013] Furthermore, the fixed bracket includes a fixed plate, a straightening flange, and a guide sleeve. The fixed plate is rectangular and is fixed to one end of the wheel hub assembly of the wheel-side reducer by bolts. The fixed plate has a central hole. One end of the guide sleeve has a fixed plate mounting part, which is located in the central hole. The guide sleeve has a locking block mounting groove, and a locking block is located in the locking block mounting groove. The other end of the locking block is engaged with the fixed plate to prevent the fixed plate from rotating. The straightening flange has a flange hole and a second guide sleeve mounting hole. The other end of the guide sleeve has a straightening flange mounting part, which is located in the second guide sleeve mounting hole. The flange hole is an oblong hole and is arranged in a central array. The straightening flange is fitted onto the other end of the wheel hub assembly of the wheel-side reducer. The straightening flange and the fixed plate vertically fix the guide sleeve to the centerline inside the wheel hub assembly of the wheel-side reducer.

[0014] Furthermore, the guide sleeve has external threads at both ends, which are threaded to large nuts. The large nuts abut against the fixing plate and the straightening flange respectively, for fixing the fixing plate and the straightening flange to both ends of the wheel hub assembly of the wheel-side reducer.

[0015] Furthermore, the rotary moving device includes a T-shaped screw, a movable nut sleeve, an outer movable sleeve, and a bearing. The T-shaped screw is located inside the guide sleeve and includes a hexagonal portion, a smooth portion, and a threaded portion. The smooth portion is located at both ends of the threaded portion, and the hexagonal portion is located at both ends of the smooth portion. The hexagonal portion extends outward through the large nut for turning the T-shaped screw to rotate it. The movable nut sleeve has a first internal thread inside, and the threaded portion is threadedly connected to the first internal thread. The rotation of the T-shaped screw drives the movable nut sleeve to move along the threaded portion. The bearing is sleeved on the smooth portion, and the inner diameter of the bearing is interference-fitted with the smooth portion. The movable nut sleeve has a clover-shaped cross-section, and the axial surface of the movable nut sleeve abuts against the inside of the guide sleeve. The movable nut sleeve and the outer movable sleeve are fixed by an internal hexagonal bolt, and the outer movable sleeve is sleeved on the guide sleeve.

[0016] Furthermore, the guide sleeve shaft has guide holes on its side, which are elongated and arranged in a central array. A connecting seat is provided inside the guide sleeve, and the connecting seat is arc-shaped. The two side surfaces of the connecting seat are flush with the inner and outer walls of the guide sleeve. Connecting portions are provided on both sides of the connecting seat. A second connecting groove is provided on the inner wall of the outer movable sleeve, and a first connecting groove is provided on the outer wall of the nut movable sleeve. The connecting portions are interference-fitted with the second and first connecting grooves. The connecting seat is used to connect the outer movable sleeve and the nut movable sleeve so that the outer movable sleeve and the nut movable sleeve move synchronously.

[0017] Furthermore, the outer movable sleeve shaft side is provided with a first countersunk hole, the connecting seat is provided with a bolt through hole, and the nut movable sleeve is provided with a bolt hole. The first countersunk hole, the bolt through hole, and the bolt hole are concentrically aligned and distributed in a central array. The outer movable sleeve and the nut movable sleeve are fixedly connected by an internal hex bolt. The internal hex bolt is located in the first countersunk hole, passes through the bolt through hole, and is threadedly connected to the bolt hole.

[0018] Furthermore, the lower end face of the outer movable sleeve is provided with several threaded blind holes. These threaded blind holes are used to fix the movable pressure plate to the lower end face of the outer movable sleeve by means of hexagon socket bolts. The movable pressure plate is provided with several second countersunk holes corresponding to the threaded blind holes. The hexagon socket bolts pass through the second countersunk holes and are threadedly connected to the threaded blind holes. The movable pressure plate is arranged in a disc shape. The center of the movable pressure plate is provided with a first guide sleeve mounting hole. The diameter of the first guide sleeve mounting hole is the same as the inner diameter of the outer movable sleeve. The first guide sleeve mounting hole is fitted onto the outer shaft side of the guide sleeve and has a clearance fit with the outer shaft side of the guide sleeve so that the movable pressure plate can move along the guide sleeve. The outer diameter of the movable pressure plate is the same as the diameter of the combined oil and gas seal.

[0019] Furthermore, the guiding device includes an outer combined oil-gas seal guiding sleeve and an inner combined oil-gas seal guiding sleeve. The outer combined oil-gas seal guiding sleeve is arranged in a ring shape and is located inside the wheel hub assembly of the wheel-side reducer, for placing the outer combined oil-gas seal and the movable pressure plate. The inner combined oil-gas seal guiding sleeve is also arranged in a ring shape and is located inside the wheel hub assembly of the wheel-side reducer, for placing the inner combined oil-gas seal and the movable pressure plate. The movable pressure plate cooperates with the outer combined oil-gas seal guiding sleeve and / or the inner combined oil-gas seal guiding sleeve to limit the deflection angle of the combined oil-gas seal.

[0020] Furthermore, the second wall thickness of the outer combined oil and gas seal guide sleeve is less than the first wall thickness of the inner combined oil and gas seal guide sleeve.

[0021] The beneficial effects achieved by this utility model are as follows:

[0022] 1. This utility model simplifies the overall structure of the combined oil and gas seal installation tool for wheeled armored vehicle wheel-side reducers by setting a rotating and moving device, making it detachable, easy to carry, and small in size and light in weight, making it convenient to operate.

[0023] 2. This utility model, by setting up a rotating and moving device, does not rely on power sources and hydraulic tools. It can be manually operated in the field and can be completed by 1-2 people. It is easy to operate, safe to use, and has a wide range of applications.

[0024] 3. This utility model further optimizes the alignment state during the installation of the combined oil and gas seal by using a movable pressure plate and a guiding device, ensuring that the combined oil and gas seal is not tilted during installation, thereby avoiding damage to the combined oil and gas seal during the installation process.

[0025] 4. This utility model uses a fixing plate with openings on it to align the installation tool with the installation position of the oil-gas seal of the wheel-side reducer. It is simple to operate, accurate in positioning, effectively reduces the error caused by manual alignment, and optimizes the installation quality of the oil-gas seal. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0027] Figure 2 This is a schematic diagram of the screw structure of this utility model.

[0028] Figure 3 This is a schematic diagram of the structure of the movable nut sleeve of this utility model.

[0029] Figure 4 This is a schematic diagram of the structure of the outer movable sleeve of this utility model.

[0030] Figure 5This is a schematic diagram of the structure of the movable pressure plate of this utility model.

[0031] Figure 6 This is a schematic diagram of the structure of the guide sleeve of this utility model.

[0032] Figure 7 This is a schematic diagram of the structure of the internally combined oil and gas sealing guide sleeve of this utility model.

[0033] Figure 8 This is a schematic diagram of the structure of the externally combined oil and gas sealing guide sleeve of this utility model.

[0034] Figure 9 This is a structural schematic diagram of the straightening flange of this utility model.

[0035] Figure 10 This is a structural schematic diagram of the fixing plate of this utility model.

[0036] Figure 11 This is a structural schematic diagram of the connector of this utility model.

[0037] In the diagram: 1. Wheel hub assembly of the wheel-side reducer; 2. T-screw; 201. Hexagonal part; 202. Smooth part; 203. Threaded part; 3. Nut movable sleeve; 301. First internal thread; 302. Bolt hole; 303. First connecting groove; 4. Outer movable sleeve; 401. First countersunk hole; 402. Threaded blind hole; 403. Second connecting groove; 5. Moving pressure plate; 501. Second countersunk hole; 502. First guide sleeve mounting hole; 6. Guide sleeve; 601. Guide hole; 602. Straightening flange mounting part; 603. 604. External thread; 605. Second internal thread; 606. Fixing plate mounting part; 607. Locking block mounting groove; 7. Inner combination oil-gas seal guide sleeve; L1. First wall thickness; 8. Outer combination oil-gas seal guide sleeve; L2. Second wall thickness; 9. Straightening flange; 901. Flange hole; 902. Second guide sleeve mounting hole; 10. Fixing plate; 1001. Center hole; 11. Bearing; 12. Large nut; 13. Socket head bolt; 14. Connecting seat; 1401. Bolt through hole; 1402. Connecting part; 15. Locking block. Detailed Implementation

[0038] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0039] In the description of this utility model, it should be noted that the terms "upper end," "lower end," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0040] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0041] Example 1

[0042] Please see Figures 1 to 11 This utility model provides a technical solution:

[0043] A combined oil-gas seal installation tool for a wheel-side reducer includes:

[0044] The wheel hub assembly 1 of the wheel-side reducer is cylindrical and is used to install and fix the bracket.

[0045] Fixed brackets are fixedly installed at both ends of the wheel hub assembly 1 of the wheel-side reducer, and are used to fix the two ends of the rotating moving device to the two ends of the wheel-side reducer.

[0046] A rotary moving device, which passes through the center hole of the fixed bracket and is located on the inner centerline of the wheel hub assembly 1 of the wheel-side reducer, is used to convert the rotational motion into translational motion, thereby installing the oil-gas seal onto the wheel-side reducer.

[0047] A guiding device is provided inside the wheel hub assembly 1 of the wheel-side reducer, and is used to guide the skew angle of the rotating moving device during translation.

[0048] Specifically, such as Figure 1 , Figure 6 , Figure 9 , Figure 10 and Figure 11 As shown, the fixing bracket includes a fixing plate 10 (e.g., Figure 10 ), straightening flange 9 (such as Figure 9) and guide sleeve 6 (such as Figure 6 The fixing plate 10 is rectangular and is fixed to one end of the wheel hub assembly 1 of the wheel-side reducer by bolts. The fixing plate 10 has a center hole 1001. One end of the guide sleeve 6 has a fixing plate mounting part 605, which is located in the center hole 1001. The guide sleeve 6 has a locking block mounting groove 606, and a locking block 15 (such as...) is installed in the locking block mounting groove 606. Figure 11 The locking block 15 is engaged with the fixing plate 10 at the other end. The locking block 15 is used to prevent the fixing plate 10 from rotating. The straightening flange 9 is provided with a flange hole 901 and a second guide sleeve mounting hole 902. The other end of the guide sleeve 6 is provided with a straightening flange mounting part 602. The straightening flange mounting part 602 is located in the second guide sleeve mounting hole 902. The flange hole 901 is an oblong hole and is distributed in a central array. The straightening flange 9 is sleeved on the other end of the wheel-side reducer hub assembly 1. The straightening flange 9 and the fixing plate 10 vertically fix the guide sleeve 6 to the centerline inside the wheel-side reducer hub assembly 1.

[0049] Specifically, the fixing plate 10 is made of hollow thickened steel plate, preferably 45 steel, and the surface is annealed.

[0050] Specifically, the outer axial surface of the guide sleeve 6 is finely ground and polished, with a preferred surface roughness of Ra1.6μm.

[0051] Specifically, the straightening flange 9 adopts a hollow design, with the outer edge inner diameter slightly larger than the other end of the hub assembly. The flange hole 901 is used to reduce the weight of the straightening flange 9 and make it easy to carry. The material of the straightening flange 9 is preferably 45 steel.

[0052] Specifically, such as Figure 6 As shown, the guide sleeve 6 has external threads 603 at both ends. The external threads 603 are threadedly connected to the large nut 12. The large nut 12 abuts against the fixing plate 10 and the straightening flange 9 respectively, and is used to fix the fixing plate 10 and the straightening flange 9 to both ends of the wheel hub assembly 1 of the wheel-side reducer.

[0053] Specifically, such as Figures 1-4 As shown, the rotary moving device includes a T-screw 2 (such as...) Figure 2 ), Nut movable sleeve 3 (e.g.) Figure 3 ), outer activity set 4 (such as Figure 4The T-shaped screw 2 is located inside the guide sleeve 6 and includes a hexagonal portion 201, a smooth portion 202, and a threaded portion 203. The smooth portion 202 is located at both ends of the threaded portion 203, and the hexagonal portion 201 is located at both ends of the smooth portion 202. The hexagonal portion 201 extends outward through the large nut 12 for turning the T-shaped screw 2 to rotate it. The movable nut sleeve 3 has a first internal thread 301 inside, and the threaded portion 203 is connected to the guide sleeve 6. The first internal thread 301 is threaded. The T-screw 2 rotates to drive the movable nut sleeve 3 to move along the threaded portion 203. The bearing 11 is sleeved on the smooth portion 202. The inner diameter of the bearing 11 is interference-fitted with the smooth portion 202. The cross-section of the movable nut sleeve 3 is shaped like a clover. The axial surface of the movable nut sleeve 3 abuts against the inside of the guide sleeve 6. The movable nut sleeve 3 and the outer movable sleeve 4 are fixed by an internal hex bolt 13. The outer movable sleeve 4 is sleeved on the guide sleeve 6.

[0054] Specifically, the thread type of the T-screw 2 is preferably T24×2.

[0055] Specifically, the bearing 11 is preferably a cylindrical roller bearing 11.

[0056] Specifically, such as Figure 1 , Figure 3 , Figure 4 , Figure 6 and Figure 11 As shown, the guide sleeve 6 has a guide hole 601 on its axial side. The guide hole 601 is elongated and arranged in a central array. The guide sleeve 6 has a connecting seat 14 inside. The connecting seat 14 is arc-shaped. The two side surfaces of the connecting seat 14 are flush with the inner and outer walls of the guide sleeve 6. The connecting seat 14 has connecting parts 1402 on both sides. The inner wall of the outer movable sleeve 4 has a second connecting groove 403. The outer wall of the nut movable sleeve 3 has a first connecting groove 303. The connecting parts 1402 are interference-fitted with the second connecting groove 403 and the first connecting groove 303. The connecting seat 14 is used to connect the outer movable sleeve 4 and the nut movable sleeve 3 so that the outer movable sleeve 4 and the nut movable sleeve 3 can move synchronously.

[0057] Specifically, such as Figure 1 , Figure 3 , Figure 4 and Figure 11As shown, the outer movable sleeve 4 has a first countersunk hole 401 on its axial side, the connecting seat 14 has a bolt through hole 1401, and the nut movable sleeve 3 has a bolt hole 302. The first countersunk hole 401, the bolt through hole 1401, and the bolt hole 302 are concentrically aligned and arranged in a central array. The outer movable sleeve 4 and the nut movable sleeve 3 are fixedly connected by an internal hex bolt 13. The internal hex bolt 13 is located in the first countersunk hole 401, passes through the bolt through hole 1401, and is threadedly connected to the bolt hole 302.

[0058] Specifically, the bolt hole 302 is preferably an M6 thread to accommodate an M6 internal hex bolt 13.

[0059] Specifically, such as Figure 1 , Figure 4 and Figure 5 As shown, the lower end face of the outer movable sleeve 4 is provided with several threaded blind holes 402. The threaded blind holes 402 are used to fix the movable pressure plate 5 to the lower end face of the outer movable sleeve 4 through the internal hex bolts 13. The movable pressure plate 5 (e.g. Figure 5 The upper part of the device is provided with several second countersunk holes 501 corresponding to the threaded blind hole 402. The internal hex bolt 13 passes through the second countersunk holes 501 and is threadedly connected to the threaded blind hole 402. The movable pressure plate 5 is arranged in a disc shape. The center of the movable pressure plate 5 is provided with a first guide sleeve mounting hole 502. The diameter of the first guide sleeve mounting hole 502 is the same as the inner diameter of the outer movable sleeve 4. The first guide sleeve mounting hole 502 is sleeved on the outer shaft side of the guide sleeve 6 and is clearance-fitted with the outer shaft side of the guide sleeve 6 so that the movable pressure plate 5 can be translated along the guide sleeve 6. The outer diameter of the movable pressure plate 5 is the same as the diameter of the combined oil and gas seal.

[0060] Specifically, the threaded blind hole 402 is preferably an M8 thread to accommodate an M8 internal hex bolt 13.

[0061] Specifically, the number of threaded blind holes 402 is preferably three, evenly distributed in a central array, and the number of the second countersunk holes 501 corresponds to the number of threaded blind holes 402.

[0062] Specifically, such as Figure 1 , Figure 7 and Figure 8 As shown, the guiding device includes an externally combined oil-gas seal guiding sleeve 8 (e.g., Figure 8 ) and internal combination oil and gas seal guide sleeve 7 (such as Figure 7The outer combined oil-gas seal guide sleeve 8 is arranged in a ring shape and is located inside the wheel hub assembly 1 of the wheel-side reducer. It is used to place the outer combined oil-gas seal and the movable pressure plate 5. The inner combined oil-gas seal guide sleeve 7 is arranged in a ring shape and is located inside the wheel hub assembly 1 of the wheel-side reducer. It is used to place the inner combined oil-gas seal and the movable pressure plate 5. The movable pressure plate 5 cooperates with the outer combined oil-gas seal guide sleeve 8 and / or the inner combined oil-gas seal guide sleeve 7 to limit the deflection angle of the combined oil-gas seal, so as to ensure that the combined oil-gas seal does not deflect during installation.

[0063] Specifically, such as Figure 7 and Figure 8 As shown, the second wall thickness L2 of the outer combined oil and gas seal guide sleeve 8 is less than the first wall thickness L1 of the inner combined oil and gas seal guide sleeve 7.

[0064] In this embodiment, during installation, the operator first installs the movable nut sleeve 3 onto the T-shaped screw 2, places the movable nut sleeve 3 and the screw 2 inside the guide sleeve 6, installs the bearings 11 at both ends of the T-shaped screw 2, and places it inside the guide sleeve 6 to allow the T-shaped screw 2 to rotate freely. The movable nut sleeve 3 is fixed to the outer movable sleeve 4 by the internal hex bolts 13, and the movable pressure plate 5 is fixed to the outer movable sleeve 4 by the internal hex bolts 13. The movable pressure plate 5 is located in the middle position between the fixed plate 10 and the outer combined oil and gas seal groove. Then, the outer combined oil and gas seal is placed in the... The inner combination oil-gas seal is placed inside the outer combination oil-gas seal guide sleeve 8, and the inner combination oil-gas seal is placed inside the inner combination oil-gas seal guide sleeve 7. The inner combination oil-gas seal guide sleeve 7 and the outer combination oil-gas seal guide sleeve 8 are respectively placed in corresponding positions inside the wheel hub assembly 1 of the wheel-side reducer. Finally, the guide sleeve 6 is placed inside the wheel hub assembly 1 of the wheel-side reducer. Both ends are fixed to the wheel hub assembly 1 of the wheel-side reducer by the fixing plate 10 and the straightening flange 9. The guide sleeve 6 and the fixing plate 10 are fixed with the locking block 15 to prevent the fixing plate 10 from rotating. The fixing plate 10 and the straightening flange 9 are locked with the large nut 12 at both ends.

[0065] In this embodiment, when using the equipment, the operator first rotates the T-shaped screw 2, which drives the movable nut sleeve 3, the outer movable sleeve 4, and the movable pressure plate 5 to move along the direction of the guide sleeve 6. The movable pressure plate 5 presses the outer combined oil and gas seal into the groove inside the outer combined oil and gas seal guide sleeve 8 until the outer combined oil and gas seal is pushed to the correct installation position. Then, the tool is disassembled and reinstalled, and the movable nut sleeve 3, the outer movable sleeve 4, and the movable pressure plate 5 are moved to the middle position between the straightening flange 9 and the groove of the inner combined oil and gas seal. Finally, the screw is rotated to install the inner combined oil and gas seal.

[0066] The parts of this utility model not described are existing or known technologies.

[0067] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention.

[0068] The scope of this utility model is defined by the appended claims and their equivalents.

Claims

1. A wheel-side reduction unit combined oil and gas seal installation tool, characterized by: The application relates to a wheel-side reducer hub assembly (1) which is cylindrically arranged and used for mounting a fixing support. The fixing support is fixedly arranged at two ends of the wheel-side reducer hub assembly (1) and used for fixing two ends of a rotating moving device at two ends of the wheel-side reducer. The rotating moving device is arranged on a middle line in the wheel-side reducer hub assembly (1) through a central hole of the fixing support and used for converting a rotating motion into a translational motion so as to mount an oil-gas seal on the wheel-side reducer. The fixing support comprises a fixing plate (10), a righting flange (9) and a guide sleeve (6), the fixing plate (10) is arranged in a rectangular shape and fixed at one end of the wheel-side reducer hub assembly (1) through bolts, the fixing plate (10) is provided with a central hole (1001), one end of the guide sleeve (6) is provided with a fixing plate mounting portion (605), the fixing plate mounting portion (605) is arranged in the central hole (1001), the guide sleeve (6) is provided with a locking block mounting groove (606), the locking block mounting groove (606) is provided with a locking block (15), the other end of the locking block (15) is clamped with the fixing plate (10), the locking block (15) is used for preventing the fixing plate (10) from rotating, the righting flange (9) is provided with a flange hole (901) and a second guide sleeve mounting hole (902), the other end of the guide sleeve (6) is provided with a righting flange mounting portion (602), the righting flange mounting portion (602) is arranged in the second guide sleeve mounting hole (902), the flange hole (901) is a waist-shaped hole and arranged in a central array, the righting flange (9) is sleeved at the other end of the wheel-side reducer hub assembly (1), and the righting flange (9) and the fixing plate (10) vertically fix the guide sleeve (6) on the middle line in the wheel-side reducer hub assembly (1). The guide sleeve (6) is provided with external threads (603) at two ends, the external threads (603) are threadedly connected with large nuts (12), the large nuts (12) abut against the fixing plate (10) and the righting flange (9) respectively, and are used for fixing the fixing plate (10) and the righting flange (9) at two ends of the wheel-side reducer hub assembly (1).

2. The combined oil and gas seal installation tool for a hub reduction, according to claim 1, wherein: ​ 3. The combined oil and gas seal installation tool for a hub reduction, according to claim 2, wherein: ​ 4. The combined oil and gas seal installation tool for a hub reduction assembly of claim 1, wherein: The rotating moving device comprises a T-shaped screw (2), a nut movable sleeve (3), an outer movable sleeve (4) and a bearing (11), the T-shaped screw (2) is arranged inside a guide sleeve (6), the T-shaped screw (2) comprises a hexagonal part (201), a smooth part (202) and a threaded part (203), the smooth part (202) is arranged at both ends of the threaded part (203), the hexagonal part (201) is arranged at both ends of the smooth part (202), the hexagonal part (201) extends outward through a large nut (12) and is used for rotating the T-shaped screw (2) to rotate the T-shaped screw (2), the nut movable sleeve (3) is internally provided with a first internal thread (301), the threaded part (203) is threadedly connected with the first internal thread (301), the T-shaped screw (2) drives the nut movable sleeve (3) to move along the threaded part (203), the bearing (11) is sleeved on the smooth part (202), the inner diameter of the bearing (11) is in interference fit with the smooth part (202), the nut movable sleeve (3) has a cross section in the shape of "clover", the nut movable sleeve (3) is in abutment with the inside of the guide sleeve (6), the nut movable sleeve (3) is fixed with the outer movable sleeve (4) through a hexagonal socket head cap screw (13), and the outer movable sleeve (4) is sleeved on the guide sleeve (6).

5. The combined oil and gas seal installation tool for a hub reduction assembly as set forth in claim 4, wherein: The guide sleeve (6) is provided with a guide hole (601) on the shaft side, the guide hole (601) is in the shape of a long strip and is arranged in a central array, the guide sleeve (6) is internally provided with a connecting seat (14), the connecting seat (14) is arranged in the shape of a circular arc, the two side surfaces of the connecting seat (14) are flush with the inner and outer walls of the guide sleeve (6), the connecting seat (14) is provided with a connecting part (1402) on both sides, the inner wall of the outer movable sleeve (4) is provided with a second connecting groove (403), and the outer wall of the nut movable sleeve (3) is provided with a first connecting groove (303), the connecting part (1402) is in interference fit with the second connecting groove (403) and the first connecting groove (303), and the connecting seat (14) is used for connecting the outer movable sleeve (4) and the nut movable sleeve (3) to synchronously move the outer movable sleeve (4) and the nut movable sleeve (3).

6. The combined oil and gas seal installation tool for a hub reduction, according to claim 5, wherein: The outer movable sleeve (4) is provided with a first countersunk hole (401) on the shaft side, the connecting seat (14) is provided with a bolt through hole (1401), and the nut movable sleeve (3) is provided with a bolt hole (302), the first countersunk hole (401), the bolt through hole (1401) and the bolt hole (302) are concentrically aligned and arranged in a central array, the outer movable sleeve (4) is fixedly connected with the nut movable sleeve (3) through the hexagonal socket head cap screw (13), the hexagonal socket head cap screw (13) is arranged in the first countersunk hole (401), and the hexagonal socket head cap screw (13) is threadedly connected with the bolt through hole (1401) and the bolt hole (302) through the bolt through hole (1401).

7. The combined oil and gas seal installation tool for a hub reduction assembly as set forth in claim 4, wherein: The lower end face of the outer movable sleeve (4) is provided with a plurality of threaded blind holes (402), which are used to fix the movable pressing plate (5) to the lower end face of the outer movable sleeve (4) through the internal hexagonal bolt (13). The movable pressing plate (5) is provided with a plurality of second countersunk holes (501) corresponding to the threaded blind holes (402). The internal hexagonal bolt (13) is threadedly connected with the threaded blind holes (402) through the second countersunk holes (501). The movable pressing plate (5) is disc-shaped and is provided with a first guide sleeve mounting hole (502) at the center. The diameter of the first guide sleeve mounting hole (502) is the same as the inner diameter of the outer movable sleeve (4). The first guide sleeve mounting hole (502) is sleeved on the outer shaft side surface of the guide sleeve (6) and is in clearance fit with the outer shaft side surface of the guide sleeve (6) to enable the movable pressing plate (5) to translate along the guide sleeve (6). The outer diameter of the movable pressing plate (5) is the same as the diameter of the combined oil and gas seal.

8. The oil and gas seal installation tool of claim 1, wherein: The guide device includes an outer combined oil and gas seal guide sleeve (8) and an inner combined oil and gas seal guide sleeve (7). The outer combined oil and gas seal guide sleeve (8) is annular and is arranged inside the wheel hub assembly (1) of the wheel hub reducer for placing the outer combined oil and gas seal and the movable pressing plate (5). The inner combined oil and gas seal guide sleeve (7) is annular and is arranged inside the wheel hub assembly (1) of the wheel hub reducer for placing the inner combined oil and gas seal and the movable pressing plate (5). The movable pressing plate (5) cooperates with the outer combined oil and gas seal guide sleeve (8) and / or the inner combined oil and gas seal guide sleeve (7) to limit the deflection angle of the combined oil and gas seal.

9. The wheel side reduction unit combined oil and gas seal installation tool of claim 8, wherein: The second wall thickness (L2) of the outer combined oil and gas seal guide sleeve (8) is smaller than the first wall thickness (L1) of the inner combined oil and gas seal guide sleeve (7).

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