CN119388125B - Method for disassembling wheelset device of low-floor vehicle - Google Patents
Method for disassembling wheelset device of low-floor vehicleInfo
- Publication number
- CN119388125B CN119388125B CN202411542336.0A CN202411542336A CN119388125B CN 119388125 B CN119388125 B CN 119388125B CN 202411542336 A CN202411542336 A CN 202411542336A CN 119388125 B CN119388125 B CN 119388125B
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- Prior art keywords
- ring
- disassembling
- disassembly
- wheel
- bearing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P21/00—Machines for assembling a multiplicity of different parts to compose units, with or without preceding or subsequent working of such parts, e.g. with programme control
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B29/00—Apparatus or tools for mounting or dismounting wheels
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/56—Reuse, recycling or recovery technologies of vehicles
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mounting Of Bearings Or Others (AREA)
Abstract
The invention relates to a method for disassembling a wheel set device of a low-floor vehicle, which comprises the steps of S1, disassembling a brake disc, S2, disassembling a fastening nut and a sealing ring, S3, disassembling a connecting bolt of a rear cover and a hollow shaft, S4, disassembling a wheel gear box assembly from a main shaft together, S5, disassembling a large bearing outer ring through a disassembling tool I, S6, disassembling a small wheel bearing and FEY sealing ring through a disassembling tool II, S7, disassembling an inner spacer ring, an adjusting ring and a large wheel bearing inner ring, and S8, and finishing the disassembly of the wheel set device. The invention can realize the disassembly of the wheel set device by the design of the process and the tooling on the basis of not changing the original design of the wheel set device, can effectively avoid the damage of parts caused by means of impact, processing damage and the like in the disassembly process, and provides effective measures and means for the maintenance of gear box transmission shaft sealing replacement, wheel limit replacement, bearing fault abnormal sound, whole vehicle maintenance and the like.
Description
Technical Field
The invention relates to the technical field of wheel set device disassembly, in particular to a method for disassembling a wheel set device of a low-floor vehicle.
Background
The wheel of the low-floor urban railcar with 100% is connected with the axle in a back-to-back mounting mode by adopting two tapered roller bearings, and the axle and a hollow shaft for mounting the wheel are designed into a structure with large diameter on one side and small diameter on the other side due to the limitation of design space and the consideration of equal strength design. In particular, the outer ring of the wheel bearing is embedded in the groove (as shown in fig. 2), and the flange (or the claw) cannot be clamped on the bearing simply by the axial positioning mode of the flange step surface, or the simple claw structure, so that the outer ring of the bearing cannot be removed from the hollow shaft of the wheel by axial force. When the wheel set device fails or the bearing is overhauled and replaced in the using process, corresponding work cannot be completed, and great difficulty is brought to normal use of the vehicle.
At present, the disassembly process flow of the wheel set device comprises the following steps of (1) disassembling a brake disc, (2) disassembling a fastening nut, a sealing ring, (3) disassembling a connecting bolt of a rear cover and a hollow shaft, (4) disassembling a wheel gear box assembly (comprising a wheel, a hollow shaft, a large wheel bearing outer ring, a small wheel bearing and FEY sealing ring brackets) from a main shaft, (5) disassembling a large wheel bearing outer ring, (6) disassembling a small wheel bearing, FEY sealing ring, (7) disassembling inner spacer rings, adjusting rings, large wheel bearing inner rings and other parts- (8) on the main shaft.
The method comprises the following steps that (4) parts are detached from a main shaft at one time, the axial force is large, if a copper hammer is used for knocking the inner side end face of the wheel, the bearing is easily subjected to transverse impact to cause damage to the bearing, and violent disassembly and wheel injury are easily caused on the other hand;
Because of the structure of the hollow shaft and the limitation of the space, the small bearing and the large bearing outer ring in the steps (5) and (6) are in interference fit with the hollow shaft, and the small bearing and the large bearing outer ring are detached from the hollow shaft in a lack of means, so that the wheel and the gear hollow shaft cannot be removed. Taking a large bearing as an example, as can be seen from fig. 2, a tool or a tool is needed, when the large bearing outer ring is disassembled, the tool or the tool enters the hollow shaft from one side of the large bearing, the large bearing is clamped by the tool from a 1mm bulge (shown in fig. 3) where the bearing is abutted against the hollow shaft, and then the bearing outer ring is taken out from the hollow shaft from the direction of the large bearing seat by axial force. The tool has two difficulties, namely that the tool needs to be integrally reduced in the diameter direction when reaching the rear of the bearing through the bearing outer ring, and can be enlarged in the diameter direction after passing through the bearing outer ring, and the height of a bulge at the position where the bearing is abutted against the hollow shaft is particularly reduced, so that the tool needs to have enough contact area and bearing contact, and the bearing is prevented from being damaged due to the fact that the contact area is too reduced. If the two difficulties are completed, the thickness of the edge of the tool cannot be too large, so that the hardness of the edge of the tool is enough, and the tool is prevented from being damaged too quickly after repeated use.
The wheel set device of the low-floor urban railway vehicle is a new structure which appears in recent years, and the design structure of the wheel set device of the bogie is relatively complex due to the requirement of the floor surface height, the space between parts is small, and the disassembly difficulty is relatively high. However, according to the design specification of the vehicle, the wheel set device needs to be disassembled for 2.5 years, the sealing ring of the transmission shaft of the gear box is replaced, and meanwhile, grease is supplemented for the large bearing and the small bearing of the wheel set device. After 5 years of use, the wheel pair bearings also need to be thoroughly disassembled and detected or updated.
It is due to the difficulty in dismantling the wheel set assembly that normal maintenance planning of the vehicle is difficult to perform. And a series of secondary quality problems such as failure of a sealing ring of a gear box, abnormal sound of a bearing and the like occur. Therefore, it is important to develop an efficient wheel set disassembly scheme.
Disclosure of Invention
In view of the above problems, the present invention aims to provide a method for disassembling a wheel set device of a low-floor vehicle, which enables the wheel set device to be disassembled through the design of a process and a tooling on the basis of not changing the original structural design of the wheel set device.
The technical scheme adopted by the invention is as follows:
The invention provides a method for disassembling a wheel set device of a low-floor vehicle, which specifically comprises the following steps:
S1, disassembling a brake disc;
s2, disassembling the fastening nut and the sealing ring;
S3, disassembling a connecting bolt of the rear cover and the hollow shaft;
s4, the wheel gear box assembly is detached from the main shaft together;
s5, disassembling the outer ring of the large bearing through a disassembling tool I;
S6, disassembling the small wheel bearing and FEY sealing ring bracket through a disassembling tool II;
S7, detaching the inner spacer ring, the adjusting ring and the large bearing inner ring of the wheel;
s8, disassembling the wheel set device is completed.
Further, the step S1 specifically comprises the steps of sequentially disassembling the connecting bolts of the brake disc and the hollow shaft through disc and the bolts between the hollow shaft through disc and the hollow shaft, so as to disassemble the brake disc and the components thereof.
Further, the step S2 specifically comprises the steps of removing the lockbolt and the gasket on the fastening nut, enabling the fastening nut to be in a free state and removing the fastening nut, and removing the flat key between the sealing ring and the main shaft by utilizing the nipper pliers, so that the sealing ring and the sealing piece on the sealing ring are removed.
Further, the step S3 specifically comprises the steps of lifting the wheel gear box assembly by utilizing a wheel lifting appliance, installing four double-head screws on the outer end face of a hollow shaft of the gear box, installing a support plate between the outer end parts of the double-head screws, installing a hydraulic cylinder I between the support plate and a main shaft, starting the hydraulic pump to extend the hydraulic cylinder I, and enabling the wheel gear box to axially move relative to the main shaft, so that the wheel gear box assembly is detached.
Furthermore, the disassembly tool I comprises a disassembly ring I, a stop ring I, a hydraulic cylinder II, a hydraulic cylinder base and a threaded screw rod I, wherein the disassembly ring I is formed by equally dividing into three parts, the outer edge of the single part of the disassembly ring I is made into a sharp angle matched with a hollow shaft, one end of the circumferential direction of the single part of the disassembly ring I is provided with a left-handed screw hole, the other end of the circumferential direction of the single part of the disassembly ring I is provided with a right-handed screw hole, and the end face of the disassembly ring I is provided with a threaded hole.
The step S5 specifically comprises the steps of respectively assembling and connecting the ends of the three-petal disassembling ring I in the circumferential direction through studs, inserting the assembled disassembling ring I into a gap between a hollow shaft and a large bearing outer ring, fixing the disassembling ring I through a stop ring I, installing a hydraulic cylinder base on the end face of a wheel, penetrating threaded lead screws I through central holes of the hydraulic cylinder base, a hydraulic cylinder II and the stop ring I, installing nuts at the upper end and the lower end of the threaded lead screws I to clamp the parts, then starting a hydraulic pump to stretch the hydraulic cylinder II, and enabling the threaded lead screws I to drive the large bearing outer ring in the stretching process to detach the large bearing.
Furthermore, the disassembly tool II comprises a disassembly ring II, a stop ring II, a double-end stud, a cover plate, a hydraulic cylinder III and a threaded screw rod II, wherein the structure of the disassembly ring II is similar to that of the disassembly ring I of the outer ring of the large bearing, but the outer edge of a single piece of the disassembly ring II is matched with a shaft shoulder of the small bearing.
Furthermore, the step S6 specifically comprises the steps of inserting the disassembling ring II into a gap between the hollow shaft and the outer ring of the small bearing, fixing the disassembling ring II through the stop ring II, respectively installing studs on the end face of the outer side of the hollow shaft, connecting a cover plate between the outer ends of the studs, penetrating a threaded lead screw II through the stop ring II, the cover plate and a central hole of the hydraulic cylinder III, installing nuts at the upper end and the lower end of the threaded lead screw II to clamp the parts, then starting the hydraulic pump to stretch the hydraulic cylinder III, and enabling the threaded lead screw II to drive the outer ring of the small bearing in the stretching process to detach the small bearing.
Further, the step S7 specifically comprises the steps of manually removing the inner spacer ring, the adjusting ring and the rear cover, removing the rear sealing cover of the puller Ma Gouzhu by utilizing a three-jaw bearing, propping the center of the puller on the main shaft through the cover plate, and then removing the rear sealing cover, the adjusting pad and the large bearing inner ring from the main shaft together.
Compared with the prior art, the invention has the following beneficial effects:
The invention can realize the disassembly of the wheel set device by the design of the process and the tool on the basis of not changing the original structural design of the wheel set device, avoids the damage of parts caused by means of impact, processing damage and the like in the disassembly process, and provides effective technological measures and means for the maintenance of gear box transmission shaft sealing replacement, wheel up-limit replacement, bearing fault abnormal sound, whole vehicle maintenance and the like. On one hand, the manufacturing cost and the research and development cost caused by redesign and improvement are reduced, and on the other hand, the production efficiency can be improved, and the production cost is reduced.
Drawings
FIG. 1 is a schematic diagram of a conventional wheelset apparatus;
FIG. 2 is a schematic view of an assembled bearing structure on the hollow axle of the wheel of FIG. 1;
FIG. 3 is a schematic view of the partial enlarged structure of FIG. 2;
FIG. 4 is a schematic illustration of the wheel gearbox assembly of the present invention shown disassembled;
FIG. 5 is a schematic installation view of a large bearing outer ring dismounting tool in the invention;
FIG. 6 is a schematic view of a partial enlarged structure of FIG. 5;
FIG. 7 is a schematic view of a large bearing release ring part;
FIG. 8 is a schematic diagram of a large bearing stop ring part;
FIG. 9 is a schematic diagram of a small bearing outer ring disassembly tool installation;
FIG. 10 is a schematic view of the partial enlarged structure of FIG. 9;
FIG. 11 is a schematic view of a small bearing release ring part;
fig. 12 is a schematic view of a small bearing removal ring adjustment process.
The hydraulic cylinder comprises a 1-double-head screw, a 2-support plate, a 3-hydraulic cylinder I, a 4-dismounting ring I, a 5-stop ring II, a 6-hydraulic cylinder II, a 7-hydraulic cylinder base, an 8-threaded screw rod I, a 9-dismounting ring II, a 10-stop ring II, a 11-double-head screw, a 12-cover plate, a 13-hydraulic cylinder III, a 14-threaded screw rod II, 15-wheels, a 16-hollow shaft, a 17-main shaft, a 18-brake disc, a 19-large bearing, a 20-small bearing, a 21-gearbox, a 22-rear cover, a 23-rear sealing cover, a 24-adjusting pad, a 25-inner spacing ring, a 26-adjusting ring, a 27-FEY sealing ring bracket, a 28-sealing ring, a 29-fastening nut, a 30-large nut, a 31-double-head screw bolt, a 32-bolt and a 33-small nut.
Detailed Description
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Referring to fig. 1-12, the invention provides a method for disassembling a wheel set device of a low-floor vehicle, which specifically comprises the following steps:
S1, disassembling the brake disc 18, namely disassembling a bolt for connecting the brake disc 18 with a hollow shaft transition disc and a bolt between the hollow shaft transition disc and the hollow shaft 16, so as to disassemble the brake disc 18 and components thereof.
S2, disassembling the fastening nut 29 and the sealing ring 28, namely disassembling the lockbolt and the gasket on the fastening nut 29, enabling the fastening nut 29 to be in a free state, and disassembling the fastening nut 29, and using the nipper pliers to remove the flat key between the sealing ring 28 and the main shaft 17, so as to disassemble the sealing ring 28 and a sealing piece on the sealing ring 28.
S3, disassembling the connecting bolt of the rear cover 22 and the hollow shaft 16.
S4, the wheel gear box assembly is detached from the main shaft together, the wheel gear box assembly is hung by a wheel sling, four double-headed screws 1 are arranged on the outer end face of the hollow shaft 16, a supporting plate 2 is arranged on the double-headed screws, a hydraulic cylinder I3 is arranged between the supporting plate 2 and the main shaft, a hydraulic pump is started to extend the hydraulic cylinder I3, the wheel gear box 21 moves axially relative to the main shaft 17, and the wheel gear box assembly is detached.
S5, disassembling the outer ring of the large bearing through a disassembling tool I;
The disassembly tool I comprises a disassembly ring I4, a stop ring I5, a hydraulic cylinder II6, a hydraulic cylinder base 7 and a threaded screw rod I8, wherein the disassembly ring I4 is formed by equally dividing into three parts, the outer edge of the single part of the disassembly ring I is made into a sharp angle matched with a hollow shaft, one end of the single part of the disassembly ring I in the circumferential direction is provided with a left-handed screw hole, the other end of the single part of the disassembly ring I is provided with a right-handed screw hole, and the end face of the disassembly ring I is provided with a threaded hole.
When the wheel gearbox assembly is disassembled, the large opening end of the wheel gearbox assembly is horizontally placed upwards, the disassembly ring I single pieces are assembled according to the figure 12, namely, the ends of the three-petal disassembly ring I single pieces in the circumferential direction are assembled and connected through the double-end studs 31 respectively, the double-end studs 31 are synchronously rotated, and as the double-end studs 31 are of a structure with one end rotating leftwards and the other end rotating rightwards, the disassembly ring I single pieces can be mutually gathered and dispersed along with the rotation of the double-end studs 31. Adjusting the disassembly ring according to the state of fig. 12, firstly enabling the disassembly ring I4 to reach the minimum diameter, enabling the disassembly ring I4 to pass through the large bearing outer ring from the large end, reversely rotating the stud, enabling the diameter of the disassembly ring I4 to be large, enabling sharp corners of the outer edge of the disassembly ring I4 to be inserted into an included angle between the large bearing outer ring and the hollow shaft, uniformly screwing the stud 31, and enabling the disassembly ring I to be inserted into the included angle as deep as possible. The dismounting ring I4 is nearly circular, so that the contact area between the edge of the dismounting ring I and a large bearing is as large as possible, and damage caused by overlarge local stress of the bearing in the dismounting process due to small contact area is reduced. The method comprises the steps of installing a stop ring I5 on the outer side of a disassembly ring I4, enabling the disassembly ring I4 to be fixed again by the stop ring I5, enabling the disassembly ring I4 to be incapable of moving in the radial direction, enabling the end face of the disassembly ring I4 to be abutted in the tightening process by the stop ring I5, guaranteeing that the stop ring I5 is located on the same plane, avoiding uneven stress during disassembly, and finally designing threaded holes of the stop ring I5 and a disassembly ring I4 mounting bolt in the center of the disassembly ring I4 to ensure that the stress of the disassembly ring I4 is even, and reducing possibility of unhooking and bearing disassembly damage. The hydraulic cylinder II6 is mounted on the end face of a wheel through the hydraulic cylinder base 7, the stop ring I5, the hydraulic cylinder base 7 and the hydraulic cylinder II6 penetrate through the center through the threaded screw rod I8, the large nuts 30 are mounted and fastened at the two ends of the threaded screw rod I8, the hydraulic pump is started to extend the hydraulic cylinder II6, and therefore the large bearing outer ring and the large bearing 19 are detached.
S6, disassembling the small wheel bearing 20 and FEY sealing ring bracket 27;
the disassembly tool II comprises a disassembly ring II9, a stop ring II10, a double-end stud 11, a cover plate 12, a hydraulic cylinder III13 and a threaded screw rod II14, wherein the structure of the disassembly ring II9 is similar to that of a disassembly ring I4 of the outer ring of the large bearing, but the outer edge of a single piece of the disassembly ring II9 is matched with a shaft shoulder of the small bearing 20.
Similar to the disassembly of the large wheel bearing 19, the small opening end of the wheel gear box assembly is horizontally placed upwards, and the disassembly ring II single piece is assembled according to fig. 12, and the double-end stud 31 is synchronously rotated, so that the disassembly ring II single piece can be mutually gathered and dispersed along with the rotation of the double-end stud 31 due to the fact that the double-end stud 31 is of a structure with one end of a left-handed collar and the other end of the double-end stud is in a right-handed collar. Adjusting the disassembly ring II9 according to the state of fig. 12, firstly enabling the disassembly ring II9 to reach the minimum diameter, enabling the disassembly ring II9 to pass through the small bearing outer ring from the small end, reversely rotating the stud 31, enabling the diameter of the disassembly ring II9 to be larger, enabling the outer edge of the disassembly ring II9 to be inserted into a gap between the small bearing outer ring and the hollow shaft, uniformly screwing the stud, enabling the outer edge of the disassembly ring II9 to be abutted against the hollow shaft, reversely rotating the stud 31 for half a circle again at the moment, enabling the disassembly ring II9 and the hollow shaft to leave a proper gap, and avoiding grinding during disassembly. The stop ring II10 is arranged on the outer side of the disassembly ring II9, the stop ring II10 enables the disassembly ring II9 to be fixed again, the disassembly ring II9 cannot move in the radial direction, meanwhile, the stop ring II10 can enable the end face of the disassembly ring II9 to be abutted in the tightening process, the stop ring II10 is guaranteed to be located on the same plane, uneven stress during disassembly is avoided, and finally, screw holes of the stop ring II10 and the disassembly ring II9 mounting bolts are designed in the center of the stop ring II10, so that the stress of the disassembly ring II9 is guaranteed to be even, and the possibility of unhooking and bearing disassembly damage is reduced. The method comprises the steps of installing four studs 11 on the outer end face of a hollow shaft, installing a cover plate 12 between the outer ends of the studs 11, installing a hydraulic cylinder III13 on the outer end face of the cover plate 12, penetrating a threaded lead screw II14 through the centers of a stop ring II10, the cover plate 12 and the hydraulic cylinder III13, installing and fastening large nuts on two ends of the threaded lead screw II14, starting a hydraulic pump to extend the hydraulic cylinder III13, and accordingly removing a small bearing outer ring and a small bearing 20.
S7, removing the inner spacer ring 25, the adjusting ring 26, the large bearing inner ring of the wheel and other parts on the main shaft 17, namely manually removing the inner spacer ring 25, the adjusting ring 26 and the rear cover 22, removing the pull Ma Gouzhu rear sealing cover 23 by using a three-jaw bearing, propping the center of the pull through a cover plate on the main shaft 17, and then removing the rear sealing cover 23, the adjusting pad 24 and the large bearing inner ring from the main shaft 17 together.
S8, the wheel set device is detached through the steps.
The invention realizes the corresponding technical effects based on the reference method, the combination method and the creation method, uses the clamping and diameter changing principle of the three-jaw chuck of the machine tool, uses the drawing principle of the bearing disassembly hydraulic drawing motor, combines the structure and the characteristics of the low-floor wheel pair gear box product, and finally realizes the nondestructive and efficient disassembly of the wheel pair device through the combination method and the creation method.
The invention is not fully described in detail in the prior art.
The above examples are only illustrative of the preferred embodiments of the present invention and are not intended to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art to the technical solution of the present invention should fall within the scope of protection defined by the claims of the present invention without departing from the spirit of the design of the present invention.
Claims (6)
1. A method of disassembling a wheelset assembly of a low floor vehicle, the method comprising the steps of:
S1, disassembling a brake disc;
s2, disassembling the fastening nut and the sealing ring;
S3, disassembling a connecting bolt of the rear cover and the hollow shaft;
s4, the wheel gear box assembly is detached from the main shaft together;
s5, disassembling the outer ring of the large bearing through a disassembling tool I;
S6, disassembling the small wheel bearing and FEY sealing ring bracket through a disassembling tool II;
S7, detaching the inner spacer ring, the adjusting ring and the large bearing inner ring of the wheel;
S8, completing the disassembly of the wheel set device;
The step S3 specifically comprises the steps of lifting a wheel gear box assembly by utilizing a wheel lifting appliance, installing four double-head screws on the outer end surface of a hollow shaft of the gear box, installing a supporting plate between the outer end parts of the double-head screws, installing a hydraulic cylinder I between the supporting plate and a main shaft, starting a hydraulic pump to extend the hydraulic cylinder I, and axially moving the wheel gear box relative to the main shaft so as to detach the wheel gear box assembly;
The disassembly tool I comprises a disassembly ring I, a stop ring I, a hydraulic cylinder II, a hydraulic cylinder base and a threaded screw rod I, wherein the disassembly ring I consists of a disassembly ring I single piece which is equally divided into three parts, the outer edge of the disassembly ring I single piece is made into a sharp angle matched with a hollow shaft, one end of the disassembly ring I single piece in the circumferential direction is provided with a left-hand screw hole, the other end of the disassembly ring I single piece is provided with a right-hand screw hole, and the end face of the disassembly ring I single piece is provided with a threaded hole;
the step S5 specifically comprises the steps of respectively assembling and connecting the ends of the three-petal disassembling ring I in the circumferential direction through studs, inserting the assembled disassembling ring I into a gap between a hollow shaft and a large bearing outer ring, fixing the disassembling ring I through a stop ring I, installing a hydraulic cylinder base on the end face of a wheel, penetrating threaded lead screws I through central holes of the hydraulic cylinder base, the hydraulic cylinder II and the stop ring I, installing nuts at the upper end and the lower end of the threaded lead screws I to clamp the parts, then starting a hydraulic pump to stretch the hydraulic cylinder II, and enabling the threaded lead screws I to drive the large bearing outer ring in the stretching process to detach the large bearing.
2. The method for disassembling the wheel set device of the low-floor vehicle according to claim 1, wherein the step S1 specifically comprises the steps of disassembling the connecting bolts of the brake disc and the hollow shaft through disc and the bolts between the hollow shaft through disc and the hollow shaft in sequence, so as to disassemble the brake disc and the assembly thereof.
3. The method for disassembling the wheel set device of the low floor vehicle according to claim 1, wherein the step S2 specifically comprises the steps of disassembling the lockbolt and the gasket on the fastening nut, enabling the fastening nut to be in a free state and disassembling the fastening nut, and utilizing the nipper pliers to remove the flat key between the sealing ring and the main shaft, so as to disassemble the sealing ring and the sealing piece on the sealing ring.
4. The method for disassembling the wheel set device of the low-floor vehicle, which is disclosed in claim 1, is characterized in that the disassembling tool II comprises a disassembling ring II, a stop ring II, a double-end stud, a cover plate, a hydraulic cylinder III and a threaded screw rod II, wherein the disassembling ring II is similar to the disassembling ring I of the outer ring of the large bearing, but the outer edge of a single piece of the disassembling ring II is matched with a shaft shoulder behind the small bearing.
5. The method for disassembling the wheel set device of the low-floor vehicle, which is characterized by comprising the following step S6, wherein a disassembling ring II is inserted into a gap between a hollow shaft and an outer ring of a small bearing, the disassembling ring II is fixed through a stop ring II, studs are respectively installed on the end face of the outer side of the hollow shaft, a cover plate is connected between the outer ends of the studs, a threaded lead screw II penetrates through the stop ring II, the cover plate and a central hole of a hydraulic cylinder III, nuts are installed at the upper end and the lower end of the threaded lead screw II to clamp the parts, then a hydraulic pump is started to enable the hydraulic cylinder III to stretch, and the threaded lead screw II drives the outer ring of the small bearing in the stretching process to enable the small bearing to be disassembled.
6. The method for disassembling the wheel set device of the low-floor vehicle, as set forth in claim 1, is characterized in that the step S7 specifically comprises the steps of manually disassembling the inner spacer ring, the adjusting ring and the rear cover, disassembling the pull Ma Gouzhu rear sealing cover by utilizing the three-jaw bearing, propping the center of the pull horse against the main shaft through the cover plate, and then disassembling the rear sealing cover, the adjusting pad and the large bearing inner ring from the main shaft together.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202411542336.0A CN119388125B (en) | 2024-10-31 | 2024-10-31 | Method for disassembling wheelset device of low-floor vehicle |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202411542336.0A CN119388125B (en) | 2024-10-31 | 2024-10-31 | Method for disassembling wheelset device of low-floor vehicle |
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| CN119388125A CN119388125A (en) | 2025-02-07 |
| CN119388125B true CN119388125B (en) | 2025-10-10 |
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| CN113103180A (en) * | 2021-04-19 | 2021-07-13 | 中国人民解放军陆军装甲兵学院 | Vehicle wheel reduction gear dismantles and mounting tool |
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| RU2312748C1 (en) * | 2006-04-20 | 2007-12-20 | Общество с ограниченной ответственностью Научно-производственное предприятие "ЭНИМС-Интергидропривод" | Hydraulic device for dismounting wheels from axles of wheel pairs |
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| DE102010046017A1 (en) * | 2010-09-18 | 2012-03-22 | Schaeffler Technologies Gmbh & Co. Kg | Warming tool for assembling and/or disassembling e.g. inner ring of roller bearing in gear box of wind power plant, has hand grips setting and/or clamping tool in machine part, where hand grips are completely arranged in front end of tool |
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| CN207508635U (en) * | 2017-12-06 | 2018-06-19 | 张家口恒盛煤矿机械有限公司 | Mekydro changer |
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| CN212921006U (en) * | 2020-07-29 | 2021-04-09 | 广州地铁集团有限公司 | Independent withdrawing device for conical wheel seat wheel set of subway vehicle wheel set |
| CN117177867A (en) * | 2021-02-22 | 2023-12-05 | 宾夕法尼亚机械有限公司 | Quick-change two-piece rail wheel assembly |
| CN117300589A (en) * | 2023-11-16 | 2023-12-29 | 中车大连机车车辆有限公司 | Locomotive axle suspension box disassembling device and method |
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2024
- 2024-10-31 CN CN202411542336.0A patent/CN119388125B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN209793621U (en) * | 2019-04-30 | 2019-12-17 | 襄阳五二五泵业有限公司 | Bearing dismounting device |
| CN113103180A (en) * | 2021-04-19 | 2021-07-13 | 中国人民解放军陆军装甲兵学院 | Vehicle wheel reduction gear dismantles and mounting tool |
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| CN119388125A (en) | 2025-02-07 |
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