A locomotive axle box dismounting device and method

Abstract

This invention belongs to the field of locomotive tooling, and particularly relates to a disassembly device and method for locomotive axle box. The disassembly device includes a pressure device and a fixing device. The pressure device includes a pressure head and a support member fixed to the side of the pressure head. The support member has a through hole for the pressure head to pass through. The fixing device includes a fixing member and a stop block. The fixing member is connected to the support member and is used to fix the axle box. The stop block is fixed and clamped at the end of the axle box away from the pressure head. The stop block includes a short side and a long side. The short side is clamped onto one end of the axle box, and the long side blocks part of the end face of the axle box and blocks the bearing of the axle box shaft while allowing the axle to pass through. The disassembly device of this invention has a robust overall structure, maintaining structural stability during repeated and frequent use, significantly reducing the probability of damage and lowering costs. This disassembly device can simultaneously disassemble the axle box and the bearing, avoiding secondary rework and greatly improving efficiency.

Description

Technical Field

[0001] This invention belongs to the field of locomotive tooling, and particularly relates to a locomotive axle box disassembly device and method. Background Technology

[0002] Traction motor semi-suspended locomotives are widely used, mainly due to their simple structure and low failure rate. A key factor contributing to this is the use of double-sided tapered roller bearings in the axle box and axle support, which enhances stability and durability. As the locomotive operates, maintenance is necessary. A crucial step during maintenance is replacing these double-sided tapered roller bearings. Because the bearings and axle are interference-fitted, a tensile force must be applied to the bearings to separate them.

[0003] Existing technology CN211362093U discloses a disassembly fixture for an axle box, including a chassis that can be connected to the axle box, a top plate disposed opposite to the chassis, and several tie rods disposed between the chassis and the top plate. The tie rods are evenly distributed circumferentially, and a space for accommodating a hydraulic jack is formed between the chassis and the top plate. The chassis has two or more sets of docking holes. The principle is that the different sets of docking holes on the chassis can dock with and connect to axle boxes of different vehicle models. After the chassis and the axle box are docked, the hydraulic jack is placed between the axle and the top plate, and the pulling force is transmitted to the chassis through the tie rods, thereby disassembling the axle box from the axle. In other words, this technology fixes the end face of the axle box to the outer ring of the device, and then uses a jack to "push" the axle in the middle of the axle box, separating it from the axle box. However, this technology has drawbacks. The fixed length of the tie rod makes it difficult to adapt to axles and axle boxes of different lengths. In addition, the installation process is too cumbersome, resulting in long installation time. The low output pressure of the hydraulic cylinder leads to a slow disassembly process. The rod is relatively thin, and after repeated use over a long period of time, it will inevitably become tensile and deformed, eventually failing. Replacing parts increases costs. There is also a risk that uneven force on the hydraulic cylinder during operation may cause it to pop out from the side, causing injury to the operator.

[0004] The prior art CN 212794810 U discloses a disassembly device for axle box, including a lifting trolley, a hydraulic station, and a disassembly device; the upper platform of the lifting trolley is provided with a disassembly device and a hydraulic station at the left and right ends respectively; the disassembly device has a base, a transverse oil cylinder is provided on the base, a piston rod that can move forward and backward is provided inside the oil cylinder, a pressure head is provided at the front end of the piston rod, a nylon sleeve is provided in front of the oil cylinder, a steel sleeve is provided outside the nylon sleeve, and a buckle and a hand pin are provided at the front end of the steel sleeve. During the operation of this device, the operator raises the lifting trolley to the same height as the axle of the axle-holding box axle collar, pushes the trolley towards the axle, and positions the nylon sleeve around the axle diameter. The end face of the steel sleeve fits against the end face of the axle-holding box axle collar, and the operator uses four clips to hold the steel sleeve and the axle-holding box axle collar together, forming a single unit. Each clip is inserted with two hand pins. The hydraulic station is then activated, causing the cylinder piston rod to advance continuously. The pressure head pushes the axle, and the steel sleeve, trolley, and axle-holding box axle collar move backward together until they are removed from the axle. In other words, the idea behind this technology is to place a steel sleeve in front of the hydraulic cylinder, with clips in front of the sleeve. This device can fix the axle-holding box axle collar. When the hydraulic station is activated, the cylinder piston rod advances continuously, and the steel sleeve, trolley, and axle-holding box axle collar move backward together. At this time, the axle-holding box axle collar is fixed backward by the steel sleeve, while the axle is pushed forward by the cylinder piston rod, effectively disassembling the axle-holding box axle collar from the axle. However, this technology also uses a steel sleeve with a buckle to fix the axle box collar, and the steel sleeve cannot be adjusted at any time, limiting the range of axle box collars that can be used.

[0005] In addition, existing technologies rarely disassemble the bearings on the axle at the same time as disassembling the axle. In order to disassemble the bearings, it is urgent to develop a device to expand the application scope of the locomotive axle box disassembly device and improve the disassembly effect of the axle box disassembly device. Summary of the Invention

[0006] The technical problem to be solved by this invention is: how to provide a locomotive axle box disassembly device that is both structurally robust and maintains structural stability during repeated and frequent use, significantly reducing the probability of damage and lowering costs; it can simultaneously disassemble the axle box and bearings, avoiding secondary rework and greatly improving efficiency, while avoiding the risk of ejection caused by the insecure fixing of the hydraulic cylinder in existing solutions, thus ensuring safety.

[0007] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0008] This invention provides a locomotive axle box disassembly device, including a pressure device and a fixing device. The pressure device includes a pressure head and a support member fixed to the side of the pressure head. The support member has a through hole for the pressure head to pass through. The fixing device includes a fixing member and a stop block. The fixing member is connected to the support member and is used to fix the axle box. The stop block is fixed and clamped at the end of the axle box away from the pressure head. The stop block includes a short side and a long side. The short side is stuck on one end of the axle box, and the long side blocks part of the end face of the axle box and blocks the bearing of the axle box shaft while allowing the axle to pass through.

[0009] Furthermore, the fixing member includes a traction rod and a traction body. The support member includes a first through hole through which the traction rod can pass vertically. The traction rod passes through the first through hole through the support member and is connected to the traction body. The support member has a device for limiting the traction rod on the side opposite to the direction of the pressure head, preventing the traction rod from sliding out of the first through hole. The traction rod is connected to the traction body, which includes a first fixing part. The first fixing part can be detachably connected to a second fixing part protruding on the outside of the box axle to fix the box axle.

[0010] Furthermore, the traction rod is movably connected to the support member, and the device for limiting the traction rod is a first nut, which can limit and fix the traction rod; and / or, the two ends of the traction rod have threaded structures.

[0011] Furthermore, the traction body and the traction rod are detachably connected, and a second nut is provided on the opposite side of the first nut to limit the traction body and prevent the traction rod from sliding out.

[0012] Furthermore, a second through hole is provided vertically in the first fixing part, and a third through hole is provided on the second fixing part. The load-bearing pin passes through the second through hole and the third through hole to fix the axle box.

[0013] Furthermore, the traction body connecting baffle is connected to the end face of the traction body by a second screw. The baffle is L-shaped, with one end connected to the traction body and the other protruding part perpendicular to the traction body is the protruding end. The protruding end is provided with a detachable first set screw for fixing the load-bearing pin 8.

[0014] Furthermore, a pad is included between the baffle and the traction body, and the pad, the baffle, and the traction body are connected by mounting screws.

[0015] Furthermore, the axle housing has a protruding annular portion at one end, and the stop block is a U-shaped structure with one end open, which is clamped on the protruding annular portion. The short side and the long side are connected through the top surface. The stop block and the axle housing are detachably connected, and a second set screw is provided on the top surface to fix the stop block and the axle housing.

[0016] Furthermore, the second set screw is a screw structure.

[0017] The second aspect of the present invention provides a method for disassembling a locomotive axle box, wherein the aforementioned locomotive axle box disassembly device is used to disassemble the axle, bearing and axle box on the axle box.

[0018] By adopting the above technical solution, the present invention has at least the following beneficial effects:

[0019] (1) The disassembly device of the present invention has a robust overall structure, which can maintain structural stability during repeated and frequent use, greatly reducing the probability of damage and lowering costs.

[0020] (2) The present invention and the disassembly device can simultaneously disassemble the bearing housing and the bearing, avoiding secondary rework and greatly improving efficiency.

[0021] (3) The present invention has no unfixed structure, which avoids the risk of popping out caused by the hydraulic cylinder not being fixed firmly in the existing solution, thus improving safety.

[0022] This invention summarizes various aspects of the embodiments and should not be construed as limiting the claims. Other embodiments are contemplated based on the technology described herein, as will be apparent to those skilled in the art upon studying the following drawings and detailed descriptions, and these embodiments are intended to be included within the scope of this invention.

[0023] Upon studying the following description, claims and drawings, those skilled in the art will understand and recognize these and other aspects, objects and features of the invention. Attached Figure Description

[0024] To gain a more complete understanding of the embodiments of the present invention, reference should be made to the embodiments described in more detail in the accompanying drawings and by way of example below, wherein:

[0025] Figure 1 The diagram shown is a structural diagram of the main body of the present invention;

[0026] Figure 2 The diagram shown is a relational diagram of the working states of this invention;

[0027] Figure 3 The image shown is a partial enlarged view of the stop portion of the present invention.

[0028] Explanation of reference numerals in the attached figures:

[0029] 1. Pressure device; 2. Axle box; 3. Axle; 4. Traction body; 5. Traction rod; 6. Second nut; 7. First nut; 8. Bearing pin; 9. Pad; 10. Baffle; 11. Mounting screw; 12. First set screw; 13. Stop block; 14. Support; 15. First fixing part; 131. Long side; 132. Second set screw; 133. Bearing. Detailed Implementation

[0030] Embodiments of the invention are described below. However, it should be understood that the disclosed embodiments are merely examples, and other embodiments may take various alternative forms. The drawings are not necessarily drawn to scale; certain functions may be exaggerated or minimized to show details of specific components. Therefore, the specific structural and functional details disclosed herein should not be construed as limiting, but merely as a representative basis for teaching those skilled in the art to use the invention in various ways. As those skilled in the art will understand, various features shown and described with reference to any of the drawings may be combined with features shown in one or more other drawings to produce embodiments not explicitly shown or described. The combinations of features shown provide representative embodiments for typical applications. However, various combinations and modifications of features consistent with the teachings of the invention may be desired for certain particular applications or implementations.

[0031] Furthermore, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or action from another, and do not necessarily require or imply any actual such relationship or order between these entities or actions. The terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements may include not only those elements but also elements not expressly listed or inherent to such processes, methods, articles, or apparatuses.

[0032] One or more embodiments of the present invention will now be described with reference to the accompanying drawings.

[0033] like Figure 1 and Figure 2 As shown, the locomotive axle box disassembly device of the present invention includes a pressure device 1 and a fixing device. The pressure device 1 includes a pressure head and a support member 14 fixed to the side of the pressure head. The support member 14 has a through hole for the pressure head to pass through. The fixing device includes a fixing member and a stop block 13. The fixing member is connected to the support member 14 and is used to fix the axle box 2. The stop block 13 is fixed and clamped at the end of the axle box 2 away from the pressure head. The stop block 13 includes a short side and a long side 131. The short side is stuck on one end of the axle box 2. The long side 131 blocks part of the end face of the axle box 2 and blocks the bearing 133 of the axle box shaft while allowing the axle 3 to pass through.

[0034] This invention applies pressure simultaneously through a pressure device 1 and a fixing device, causing the axle housing 2, axle 3, and bearing 133 to separate. The axle housing 2 to be disassembled is simultaneously fixed by the support member 14 in the pressure device 1 and the fixing part of the fixing device. At the same time, the stop block 13 in the fixing device clamps the end face of the axle housing 2. During the disassembly process, under the further pressure applied by the pressure device 1, the axle 3 and bearing 133 are pushed and moved. The stop block 13 fixed at one end of the axle housing 2 can prevent the bearing 133 from being pushed out at the same time while allowing the axle 3 to be pushed out. This allows the disassembly of the axle housing 2 and bearing 133 to be completed simultaneously, avoiding the need to disassemble the bearing 133 again after the axle 3 and bearing 133 are disassembled together, thus avoiding secondary rework and greatly improving efficiency.

[0035] In some embodiments, based on the above embodiments, such as Figure 1 and Figure 2 As shown, the fixing component includes a traction rod 5 and a traction body 4. The support member 14 includes a first through hole through which the traction rod 5 can pass vertically. The traction rod 5 passes through the first through hole through the support member 14 and is connected to the traction body 4. The support member 14 has a device on the side opposite to the direction of the pressure head to limit the traction rod 5, preventing the traction rod 5 from sliding out of the first through hole. The traction rod 5 is connected to the traction body 4. The traction body 4 includes a first fixing part 15. The first fixing part 15 can be detachably connected to a second fixing part protruding on the outside of the box axle to fix the box axle.

[0036] In some embodiments, based on the above embodiments, such as Figure 1 and Figure 2 As shown, the traction rod 5 is movably connected to the support member 14, and the device for limiting the traction rod 5 is the first nut 7, which can limit and fix the traction rod 5; and / or, the two ends of the traction rod 5 have threaded structures.

[0037] In this invention, the first nut 7 is used to adjust the length of the traction rod 5. Through the threaded structure of the traction rod 5, the adjustment device can be adjusted according to different shapes of the bearing box 2, making it more adaptable to different bearing boxes 2.

[0038] In some embodiments, based on the above embodiments, such as Figure 1 and Figure 2 As shown, the traction body 4 and the traction rod 5 are detachably connected. A second nut 6 is provided on the opposite side of the first nut 7 to limit the traction body 4 and prevent the traction rod 5 from sliding out.

[0039] In this invention, the second nut 6 also serves to adjust the length of the traction rod 5, making the device more adaptable to different axle-holding boxes 2.

[0040] In some embodiments, based on the above embodiments, the first fixing part 15 is provided with a second through hole in the vertical direction, the second fixing part is provided with a third through hole in the vertical direction, and the bearing pin 8 passes through the second through hole and the third through hole to fix the bearing box 2.

[0041] In this invention, the bearing pin 8 is used to fix the axle box 2 and the traction body 4. The bearing pin 8 is fixed in a detachable manner, which is convenient and quick and can be easily replaced with different axle boxes. At the same time, the bearing pin 8 can bear force, which makes it convenient for the pressure device to apply greater force during disassembly.

[0042] In some embodiments, based on the above embodiments, such as Figure 1 As shown, the traction body 4 is connected to the baffle 10. The baffle 10 is connected to the end face of the traction body 4 by a second screw. The baffle 10 is L-shaped, with one end connected to the traction body 4 and the other protruding part perpendicular to the traction body 4 is the protruding end. The protruding end is provided with a detachable first set screw 12 for fixing the load-bearing pin 8.

[0043] The baffle 10 of the present invention is used to install the first set screw 12. The first set screw 12 can abut against the bearing pin 8 in the horizontal direction to further fix the bearing pin 8, so that the axle box 2 and the traction body 4 are better fixed together, thereby better applying force and disassembling the axle box 2.

[0044] In some embodiments, based on the above embodiments, a pad 9 is included between the baffle 10 and the traction body 4, and the pad 9, the baffle 10 and the traction body 4 are connected by mounting screws 11.

[0045] In this invention, the pad 9 is used to adjust the relative position of the baffle 10 and the traction body 4, so that the position of the first set screw 12 is more suitable, and the load-bearing pin can be better fixed, that is, the box-holding shaft and the fixing device of this invention can be fixed.

[0046] In some embodiments, based on the above embodiments, a pad 9 is included between the baffle 10 and the traction body 4, and the pad 9, the baffle 10 and the traction body 4 are connected by mounting screws 11.

[0047] The pad 9, baffle 10 and traction body 4 are detachably connected by mounting screws 11, which facilitates targeted adjustments and timely replacement according to different models of bearing boxes 2, so that the device of the present invention can adapt to more sizes of bearing boxes 2.

[0048] In some embodiments, based on the above embodiments, such as Figure 3As shown, the bearing housing 2 has a protruding annular portion at one end, and the stop block 13 is a U-shaped structure with one end open, which is clamped on the protruding annular portion. The short side and the long side 131 are connected through the top surface. The stop block 13 and the bearing housing 2 are detachably connected. A second set screw 132 is provided on the top surface to fix the stop block 13 and the bearing housing 2.

[0049] The second set screw 132 of the present invention is used to fix the stop block 13 and the axle box 2 to be detachably connected. The shape of the stop block is adjusted according to the model and volume of the axle box. When encountering a axle box with a thinner axle, a stop block with a longer side is used. When encountering a axle box with a thicker axle, a stop block with a shorter side is used instead. This allows the device of the present invention to adapt to axle boxes of different shapes.

[0050] On the other hand, the present invention provides a method for disassembling a locomotive axle box, which uses the aforementioned locomotive axle box disassembly device to disassemble the axle 3, bearing 133 and axle box 2 on the axle box.

[0051] In some embodiments, based on the above embodiments, a method for disassembling a locomotive axle box 2 is provided. The specific scheme is as follows: the axle box 2 is placed horizontally on the pressure device 1, and the bearing pin 8 is inserted into the second through hole of the axle box 2. It is supported by the baffle 10 and the first set screw 12. The length of the traction rod 5 is determined by the two first nuts 7 and the second nuts 6 and fixed to the pressure application end. The stop block 13 is installed on the other side of the axle box 2. After the pressure device 1 is started, the pressure head applies pressure to the end face of the axle 3. Since the axle box 2 is fixed to the axle 3 by the bearing 133, the traction rod 5 restricts the movement of the axle box 2 and the bearing 133 relative to the axle 3. As the pressure head extends, the bearing 133 is forced to loosen, and the axle 3 is pushed out of the axle box 2. When the axle 3 moves to the designated position, the bearing 133 stop block 13 is installed so that the bearing 133 continues to be subjected to force, thereby achieving the goal of disassembling the axle box 2 and the bearing 133.

[0052] In more specific embodiments of the present invention, such as Figure 2 and Figure 3 As shown, the assembly of the axle housing 2 and the axle 3 is placed on the support of the pressure device 1. The traction body 4 is placed on the side step of the axle housing 2. Four load-bearing pins 8 are inserted to connect the traction body and the axle housing. The traction rod 5 is installed, passing through the round holes of the traction body 4 and the pressure device 1. The first nut 6 and the second nut 7 are screwed into specific positions to ensure that the effective length of the traction rod 5 is consistent. The pad 9 and the baffle 10 are installed and fixed on the traction body 4 with the mounting screws 11. The first set screw 12 is screwed in to hold the axle housing 2 during operation and help fix the traction body 4 and the axle housing 2. The bearing stop 131 is ready to be installed on the axle housing.

[0053] During operation, the pressure device 1 is activated, applying pressure to the end face of the axle 3. Because the traction rod 5, the first nut 6, and the second nut 7 fix the distance between the pressure device 1 and the axle-holding box 2, as the pressure head of the pressure device 1 extends continuously, the axle 3 separates from the axle-holding box 2 under pressure. As the process progresses, the axle moves to the position where the bearing is exposed, such as... Figure 3 As shown, the bearing stop 131 is installed and fixed to the axle box 2 with the second set screw 132. As the axle continues to push, the bearing stop 131 applies a force to the bearing 133, causing the bearing 133 to move under the action of the bearing stop 131, thereby achieving the purpose of disassembling the axle box 2 and the bearing 133.

[0054] This invention document is intended to illustrate how to use the disclosed techniques and various embodiments, and is not intended to limit its true scope and equivalent spirit. Furthermore, the foregoing description is not exhaustive of all possibilities or to limit the scope of protection to the precise forms disclosed. Changes and variations are possible in accordance with the foregoing teachings. The selected and illustrated embodiments provide the best illustration of the principles of the technology and its practical application, and enable those skilled in the art to use the disclosed technology for various conceivable specific applications with various modifications. Therefore, various changes and modifications made to the above embodiments without substantially departing from the spirit and principles of the technology described herein are intended to be included within the scope of this invention.

Claims

1. A locomotive axle box disassembly device, comprising a pressure device (1) and a fixing device, characterized in that, The pressure device (1) includes a pressure head and a support member (14) fixed on the side of the pressure head. The support member (14) has a through hole for the pressure head to pass through. The fixing device includes a fixing member and a stop (13). The fixing member is connected to the support member (14) for fixing the axle box (2). The stop (13) is fixed and clamped at the end of the axle box (2) away from the pressure head. The stop (13) includes a short side and a long side (131). The short side is stuck on one end of the axle box (2). The long side (131) blocks part of the end face of the axle box (2) and blocks the bearing (133) of the axle box shaft while allowing the axle (3) to pass through. The fixing component includes a traction rod (5) and a traction body (4). The support member (14) includes a first through hole through which the traction rod (5) can pass vertically. The traction rod (5) passes through the support member (14) through the first through hole and is connected to the traction body (4). The support member (14) has a device for limiting the traction rod (5) on the side opposite to the direction of the pressure head, preventing the traction rod (5) from sliding out of the first through hole. The traction rod (5) is connected to the traction body (4). The traction body (4) includes a first fixing part (15). The first fixing part (15) can be detachably connected to a second fixing part protruding on the outside of the box axle to fix the box axle (2). The first fixing part (15) is provided with a second through hole in the vertical direction, and the second fixing part is provided with a third through hole in the vertical direction. The bearing pin (8) passes through the second through hole and the third through hole to fix the axle box (2). The traction body (4) is connected to the baffle (10). The baffle (10) is connected to the end face of the traction body (4) by the second screw. The baffle (10) is L-shaped, with one end connected to the traction body (4) and the other part protruding and perpendicular to the traction body (4) is the protruding end. The protruding end is provided with a detachable first set screw (12) for fixing the load-bearing pin (8). The disassembly device can disassemble the bearing housing and bearing simultaneously.

2. The locomotive axle box dismantling device as described in claim 1, characterized in that, The traction rod (5) is movably connected to the support member (14), and the device for limiting the traction rod (5) is the first nut (7), which can limit and fix the traction rod (5); and / or, the two ends of the traction rod (5) have threaded structures.

3. The locomotive axle box dismantling device as described in claim 2, characterized in that, The traction body (4) is detachably connected to the traction rod (5), and a second nut (6) is provided on the opposite side of the first nut (7) to limit the traction body (4) and prevent the traction body (4) from sliding out of the traction rod (5).

4. The locomotive axle box dismantling device as described in claim 1, characterized in that, A pad (9) is included between the baffle (10) and the traction body (4), and the pad (9), the baffle (10) and the traction body (4) are connected by mounting screws (11).

5. The locomotive axle box dismantling device as described in claim 1, characterized in that, The axle box (2) has a protruding annular part at one end. The stop block (13) is a U-shaped structure with one end open, which is clamped on the protruding annular part. The short side and the long side (131) are connected through the top surface. The stop block (13) and the axle box (2) are detachably connected. A second set screw (132) is provided on the top surface to fix the stop block (13) and the axle box (2).

6. A method for disassembling a locomotive axle box, characterized in that, The axle (3), bearing (133) and axle box (2) on the locomotive axle box are disassembled using the locomotive axle box disassembly device according to any one of claims 1 to 5.

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