Special pressure head device for disassembling and assembling locomotive wheelset

Abstract

The utility model relates to a special pressure head device for disassembling and assembling a locomotive wheelset, and belongs to the technical field of locomotive wheelset disassembling and assembling equipment. The structure comprises a pressure head body (1) and a correction piece (2), one end face of the pressure head body (1) is provided with an arc-shaped pressure head opening (11), one end of the correction piece (2) is provided with a matched correction head (21), and the correction head (21) extends into the pressure head opening (11). According to the structure, through arc-shaped contact of the correcting head (21) and the pressing head opening (11), micro-angle swing is achieved, the left end face of the pressing head body (1) makes full contact with the end face of the spindle pressing head, the right end face of the correcting piece (2) makes full contact with the end face of the axle head, and therefore the perpendicularity of the end face of the spindle pressing head and the end face of the axle head is automatically corrected, and stress is more uniform. The problems that in the prior art, an oil press directly acts on an axle tap, centering is not easy, and an axle head is prone to deformation or bending damage are solved.

Description

Technical Field

[0001] This utility model relates to a special pressure head device for disassembling and assembling locomotive wheelsets, belonging to the technical field of locomotive wheelset disassembly and assembly equipment. Background Technology

[0002] The wheelset is a crucial component of a locomotive, consisting of an axle and a wheel disc fitted with an interference fit. The traditional method for removing or pressing wheelsets involves placing the axle head against the hydraulic press's main spindle head, while the wheel disc end face rests against the right-hand support of the hydraulic press. The hydraulic press's main spindle head is then moved to the right a required distance to complete the removal or pressing. While simple, this method has several drawbacks. First, the high pressure can easily cause plastic deformation of the axle head. Second, the mismatch between the hydraulic press's main spindle head and the axle head's diameter makes alignment difficult, leading to uneven stress and axle head deformation. Third, the dented surfaces of the hydraulic press's main spindle head can cause the end face to be non-perpendicular to the horizontal, resulting in axle bending. Meanwhile, this traditional disassembly and assembly method can easily cause the diameter of the axle head to increase, deform, or bend, and it is also easy to "strain" the axle head, resulting in scrap. Therefore, it must be repaired on a lathe after disassembly, which increases the workload of axle repair. Moreover, it is difficult to guarantee the coaxiality with the original size after machining, which increases the difficulty of repair and the labor intensity of workers, and creates potential quality problems. Utility Model Content

[0003] The technical problem to be solved by this utility model is that the existing technology of directly applying hydraulic pressure to the axle tap is not easy to align, which can easily cause deformation or bending damage to the axle head.

[0004] The technical solution adopted by this utility model to solve its technical problem is: a special pressure head device for disassembling and assembling locomotive wheelsets, including a pressure head body and a straightening component. One end face of the pressure head body is provided with an arc-shaped pressure head opening, and one end of the straightening component is provided with a matching straightening head, which extends into the pressure head opening.

[0005] In the aforementioned device, the pressure head opening is a spherical notch, and the straightening head is a matching spherical structure.

[0006] Furthermore, the pressure head in the above-mentioned device is spherical, and the correction head is a spherical notch smaller than a hemisphere.

[0007] The corrective component in the aforementioned device is a columnar structure that is smaller in the middle and larger at both ends.

[0008] The device also includes an outer sleeve, which is fitted over the straightening member and has a detachable connection at one end to the pressure head body.

[0009] Furthermore, after the end of the outer tube in the above device is connected to the end of the pressure head body, the straightening element is located inside the outer tube away from the end of the pressure head body.

[0010] Further, the end of the pressure head body is provided with external threads, the end of the outer sleeve is provided with internal threads, and the pressure head body is screwed with the outer sleeve.

[0011] Further, the outer sleeve is provided with a stepped through hole.

[0012] Further, the correction member is arranged at a distance from the wall of the outer sleeve.

[0013] The pressure head body is of a taper structure, and the pressure head port is arranged on the small end face.

[0014] The device has the advantages that: the device has a simple structure, and the arc-shaped contact between the correction head and the pressure head port enables the left end face of the pressure head body and the end face of the spindle pressure head to be fully contacted by a small angle swing, and the right end face of the correction member and the end face of the axle head are fully contacted, so that the perpendicularity of the end face of the spindle pressure head and the end face of the axle head is automatically corrected, and the stress is more uniform. The diameter change of the axle head is transferred by the small structure in the correction member, and the diameter of the axle head is prevented from being too large. The processes of hoisting, measuring, marking, turning, polishing, measuring, rolling and hoisting of the front axle during repair by the lathe are reduced, the 4-hour quota time of each wheel set is directly reduced, the phenomenon that the axle head is "pulled" due to poor cooperation with the bearing caused by the out-of-tolerance coaxiality of the axle after the lathe processing is reduced, the labor intensity and skill requirement of workers are reduced, and the safety hidden danger during polishing is eliminated. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 The figure is a structural schematic view of the utility model;

[0016] Figure 2 The figure is an exploded view of the utility model;

[0017] Figure 3 The figure is a structural schematic view of the outer sleeve of the utility model;

[0018] Figure 4 The figure is a structural schematic view of the utility model Figure 1 The figure is a structural schematic view of the outer sleeve of the utility model;

[0019] In the figure, 1 is a pressure head body, 11 is a pressure head port, 2 is a correction member, 21 is a correction head, and 3 is an outer sleeve. DETAILED DESCRIPTION

[0020] The utility model will be further described below in combination with the drawings.

[0021] As Figures 1 to 4As shown, the utility model discloses a special pressure head device for locomotive wheel set dismounting, including pressure head body 1 and correction spare 2, the one end surface of pressure head body 1 is provided with the pressure head mouth 11 of arc shape, and the one end of correction spare 2 is provided with the correction head 21 of adaptation, and correction head 21 extends into pressure head mouth 11. Those skilled in the art can understand that the structure is mainly through increasing pressure head device to realize the uniform stress of axle head, and specifically including pressure head body 1 and correction spare 2, while the one end surface of pressure head body 1 is provided with the pressure head mouth 11 of arc shape, and the one end of correction spare 2 is provided with the correction head 21 of adaptation, and correction head 21 extends into pressure head mouth 11, and actually through the arc contact of correction head 21 and pressure head mouth 11 realizes the slight angle swing to make the left end surface of pressure head body 1 and the end surface of main shaft pressure head fully contact, and the right end surface of correction spare 2 and the end surface of axle axle head fully contact, thereby automatically correcting the perpendicularity of the end surface of main shaft pressure head and the end surface of axle axle head, to make the end surface pressure of axle axle head even, and eliminate the problem of the diameter of axle head increasing.

[0022] Preferably, the pressure head mouth 11 in the above device is a spherical gap, and the correction head 21 is a spherical structure. Those skilled in the art can understand that the shape of the pressure head mouth 11 and the correction head 21 in the device is further preferred, which increases the contact area of the pressure head mouth 11 and the correction head 21. Therefore, the pressure head mouth 11 is preferably a spherical gap, and the correction head 21 is a spherical structure.

[0023] Preferably, the pressure head mouth 11 in the above device is a spherical gap, and the correction head 21 is a spherical structure. Those skilled in the art can understand that the shape of the pressure head mouth 11 and the correction head 21 in the device is further preferred, which increases the contact area of the pressure head mouth 11 and the correction head 21. Therefore, the pressure head mouth 11 is preferably a spherical gap, and the correction head 21 is a spherical structure.

[0024] Preferably, the correction spare 2 in the above device is a columnar structure with small middle and large two ends. Those skilled in the art can understand that, in order to avoid the diameter of the axle head increasing, the correction spare 2 in the device is preferably a columnar structure with small middle and large two ends. Actually, through the slightly smaller structure of the correction spare 2, the diameter change of the axle head is transferred, and the problem of the diameter of the axle head increasing is solved.

[0025] Preferably, the device further comprises an outer sleeve 3, which is sleeved on the correcting member 2 and detachably connected with the end of the punch body 1 at the end of the punch port 11. Those skilled in the art can understand that, in order to limit the radial position of the correcting member 2, the device is actually preferred to be sleeved on the correcting member 2 and detachably connected with the end of the punch body 1 at the end of the punch port 11, so as to avoid the radial ejection of the correcting member 2 during work, ensure the safety of use, and facilitate centering.

[0026] Preferably, after the end of the outer sleeve 3 is connected with the end of the punch body 1, the correcting member 2 is located in the outer sleeve 3 away from the end of the punch body 1. Those skilled in the art can understand that the device is further preferred in length of the outer sleeve 3, so that after the end of the outer sleeve 3 is connected with the end of the punch body 1, the correcting member 2 is located in the outer sleeve 3 away from the end of the punch body 1, thereby limiting the radial micro-motion position of the correcting member 2 and facilitating full contact with the end face of the shaft head.

[0027] Preferably, the end of the punch body 1 is provided with external threads, the end of the outer sleeve 3 is provided with internal threads, and the punch body 1 is threadedly connected with the outer sleeve 3. Those skilled in the art can understand that, in order to facilitate the fixation of the outer sleeve 3, the device is preferred to be provided with external threads at the end of the punch body 1, i.e. provided with external threads at the end of the punch port 11, and provided with internal threads at the end of the outer sleeve 3, so that the punch body 1 is threadedly connected with the outer sleeve 3.

[0028] Preferably, the outer sleeve 3 is provided with a stepped through hole. Those skilled in the art can understand that, in order to facilitate the insertion of the correcting member 2, the device is actually preferred to be provided with a stepped through hole in the outer sleeve 3, so that the correcting member 2 can be inserted from the left end of the large hole.

[0029] Preferably, the correcting member 2 is spaced apart from the wall of the outer sleeve 3. Those skilled in the art can understand that, since the correcting member 2 will be slightly adjusted in the radial direction during actual disassembly or pressing, in order to ensure good contact between the correcting head 21 and the punch port 11, the correcting member 2 is actually preferred to be spaced apart from the wall of the outer sleeve 3.

[0030] Preferably, the punch body 1 is a taper structure, and the punch port 11 is arranged on the small end face. Those skilled in the art can understand that, in order to make the left end face of the punch body 1 fully contact with the end face of the main shaft punch, and ensure uniform stress, the device is preferred to be a taper structure, and the punch port 11 is arranged on the small end face.

Claims

1. A special purpose press head apparatus for the disassembly of a locomotive wheelset, characterized by: The device comprises a pressing head body (1) and a correcting member (2), one end surface of the pressing head body (1) is provided with an arc-shaped pressing head opening (11), one end of the correcting member (2) is provided with a matched correcting head (21), and the correcting head (21) extends into the pressing head opening (11).

2. A special purpose press head apparatus for disassembling a locomotive wheelset as defined in claim 1 wherein: The pressing head opening (11) is a spherical gap, and the correcting head (21) is a matched spherical structure.

3. The special press head device for disassembling and assembling the wheel set of a locomotive according to claim 2, characterized in that: The pressing head opening (11) is a spherical cap, and the correcting head (21) is a spherical gap smaller than a hemisphere.

4. The special purpose press head apparatus for disassembling locomotive wheelsets according to claim 1, wherein: The correcting member (2) is a columnar structure with small middle and large ends.

5. The special-purpose press head apparatus for disassembling and assembling a wheel set of a locomotive according to any one of claims 1 to 4, characterized in that: Further comprising an outer sleeve (3), the outer sleeve (3) is sleeved outside the correcting member (2), and the end part is detachably connected with the end part of the pressing head body (1) provided with the pressing head opening (11).

6. A special purpose press head apparatus for disassembling a locomotive wheelset as defined in claim 5 wherein: After the end part of the outer sleeve (3) is connected with the end part of the pressing head body (1), the correcting member (2) is located in the outer sleeve (3) away from the end part of the pressing head body (1).

7. The special press head device for disassembling and assembling the wheel set of a locomotive according to claim 5, characterized in that: The end part of the pressing head body (1) is provided with an external thread, the end part of the outer sleeve (3) is provided with an internal thread, and the pressing head body (1) is threadedly connected with the outer sleeve (3).

8. The special press head device for disassembling and assembling the wheel set of a locomotive according to claim 5, characterized in that: The outer sleeve (3) is provided with a stepped structure through hole.

9. The special purpose press head apparatus for disassembling locomotive wheelsets of claim 5 wherein: The correcting member (2) is spaced apart from the wall of the outer sleeve (3).

10. The special purpose press head apparatus for disassembling locomotive wheelsets of claim 1 wherein: The pressing head body (1) is a size head structure, and the pressing head opening (11) is arranged on the small end surface.

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