Fixture and method for heat fitting of anti-roll torsion bar connecting bushing for bogie

Abstract

This invention discloses a heat-fitting fixture and method for a bogie anti-roll torsion bar connecting bushing. The positioning part is used to clamp and position the bogie anti-roll torsion bar, the alignment part is used to place the connecting bushing, and the connecting frame connects the positioning part and the alignment part, thereby fixing the connecting bushing onto the end of the bogie anti-roll torsion bar. This invention stabilizes the axis of the bogie anti-roll torsion bar by fixing it with the positioning part, and further achieves the alignment and fitting of the heated connecting bushing through pre-alignment between the alignment part and the bogie anti-roll torsion bar. This allows for precise alignment and rapid heat-fitting, meeting regulations and related process requirements, enhancing the mechanization level of bushing heat-fitting, shortening heat-fitting time, reducing heat-fitting failures due to temperature drops, and improving maintenance efficiency.

Description

Technical Field

[0001] This invention relates to the field of EMU maintenance technology, specifically to a hot-fitting tooling and method for a bogie anti-roll torsion bar connecting bushing. Background Technology

[0002] As a component of the bogie bolster in a high-speed train, the anti-roll torsion bar (torsion spring) reduces the outward tilt angle of the train body when navigating curves. In this way, the anti-roll torsion bar ensures the specified ground clearance and improves passenger comfort. Maintenance of the anti-roll torsion bar requires removal from the frame for inspection; specifically, level three and four repairs necessitate replacing the connecting bushings at the bar ends.

[0003] In the current industry, the anti-roll torsion bar of the bogie and the corresponding connecting bushing need to be manually aligned and installed. The operation mainly relies on manual alignment. Since the bushing needs to be heated during the installation process, but the temperature drops rapidly during manual assembly, the bushing cools down too quickly, so the installation time is very short and the skill requirements of the installer are high. At the same time, when the bushing is hot-installed, the material is prone to deformation due to heat. The manual alignment process cannot guarantee the coaxiality of the bushing and the bar. The connecting bushing is prone to tilting during installation, resulting in a low hot-installation qualification rate, long rework time, low maintenance efficiency and low quality.

[0004] In view of the above-mentioned defects, the inventors of this invention have finally obtained this invention after a long period of research and practice. Summary of the Invention

[0005] To address the aforementioned technical deficiencies, the present invention provides a heat-fitting fixture for a bogie anti-roll torsion bar connecting bushing, comprising a positioning part, an alignment part, and a connecting frame, wherein the connecting frame connects the positioning part and the alignment part.

[0006] The positioning part includes a fixed plate, a clamping plate, a clamping adjustment assembly, an adjustment plate, and a guide plate. The adjustment plate is fixed on the connecting frame. The fixed plate and the guide plate are respectively disposed at both ends of the adjustment plate, with the fixed plate disposed at one end closer to the alignment part. The clamping adjustment assembly is fixedly disposed on the adjustment plate. The fixed plate, the clamping plate, and the guide plate are arranged in parallel. The clamping plate is connected to the clamping adjustment assembly, and the clamping adjustment assembly drives the clamping plate to move in a direction perpendicular to the clamping plate. The clamping plate is disposed between the fixed plate and the guide plate. The rocker arm of the bogie anti-roll torsion bar is disposed between the fixed plate and the clamping plate. A pad is disposed on the side of the fixed plate closer to the alignment part.

[0007] The alignment part includes a first horizontal adjustment component, a second horizontal adjustment component, a vertical adjustment component, and a sleeve bracket. The sleeve bracket is movably connected to the vertical adjustment component via a universal ball joint. The connecting bushing is disposed on the sleeve bracket. The vertical adjustment component is disposed on the second horizontal adjustment component, and the vertical adjustment component drives the sleeve bracket to adjust and move in the vertical direction. The second horizontal adjustment component is disposed on the first horizontal adjustment component, and the first and second horizontal adjustment components drive the sleeve bracket to adjust and move in the horizontal direction. The second horizontal adjustment component is provided with a first locking member for locking the position of the sleeve bracket on the second horizontal adjustment component, and the vertical adjustment component is provided with a second locking member for locking the position of the sleeve bracket on the vertical adjustment component.

[0008] Preferably, the connecting frame includes a first horizontal plate, a second horizontal plate, and a connecting plate. The first horizontal plate and the second horizontal plate are arranged in parallel directions, and the two ends of the connecting plate are respectively perpendicularly connected to the ends of the first horizontal plate and the second horizontal plate, thereby forming a Z-shaped connecting frame. The positioning part is fixedly arranged on the first horizontal plate, and the alignment part is fixedly arranged on the second horizontal plate.

[0009] Preferably, two connecting frames are symmetrically arranged, and the ends of the connecting frames are connected by mounting plates. The adjusting plate is fixedly arranged between the two first horizontal plates, the fixing plate is arranged corresponding to the connecting plate, and the first horizontal adjusting component is arranged between the two second horizontal plates.

[0010] Preferably, the fixing plate is provided with a first guide groove, the guide plate is provided with a second guide groove, and the clamping plate is provided with a clearance groove. The first guide groove and the second guide groove are both arc-shaped grooves and are coaxially arranged. The axial direction of the first guide groove is consistent with the adjustment direction of the clamping adjustment assembly on the clamping plate. The bogie anti-roll torsion bar is simultaneously arranged in the first guide groove, the second guide groove, and the clearance groove.

[0011] Preferably, the clamping adjustment assembly includes a clamping screw and a clamping slider. One end of the clamping screw passes through the guide plate and is fixed to a rotating disk, while the other end is rotatably connected to the adjustment plate. The clamping screw and the guide plate are rotatably connected, and the clamping screw and the clamping slider are threadedly connected. The clamping plate is fixedly mounted on the clamping slider.

[0012] Preferably, the first horizontal adjustment component includes a guide plate, a first horizontal adjustment rail, and a first adjustment platform. The guide plate is fixedly mounted on the second horizontal plate, and the first horizontal adjustment rail is mounted on the guide plate. The extension directions of the guide plate, the second horizontal plate, and the first horizontal adjustment rail are all consistent. The first adjustment platform is slidably connected to the first horizontal adjustment rail, and the second horizontal adjustment component is fixedly mounted on the first adjustment platform.

[0013] Preferably, the second horizontal adjustment component includes a second horizontal adjustment guide rail and a second adjustment platform. The second horizontal adjustment guide rail is fixedly disposed at the bottom of the first adjustment platform, and the second adjustment platform is slidably connected to the second horizontal adjustment guide rail. The vertical adjustment component is fixedly disposed on the second adjustment platform. Both the first adjustment platform and the second adjustment platform are provided with through holes, and the vertical adjustment component passes through the through holes and connects to the universal ball joint.

[0014] Preferably, both the first horizontal adjustment rail and the second horizontal adjustment rail extend horizontally, and the extension directions of the first horizontal adjustment rail and the second horizontal adjustment rail are set perpendicularly.

[0015] Preferably, the vertical adjustment assembly includes a fixed block and an adjusting rod. The fixed block is fixedly mounted on the second adjustment platform, the adjusting rod is threadedly connected to the fixed block, and the adjusting rod is vertically positioned. The top end of the adjusting rod is fixedly connected to the universal ball joint.

[0016] Preferably, a method for heat-fitting a bogie anti-roll torsion bar connecting bushing includes the following steps:

[0017] S1, Preparation Phase;

[0018] Place the anti-roll torsion bar of the bogie to be assembled at the assembly station;

[0019] S2, Installation phase;

[0020] Place the positioning part on the anti-roll torsion bar of the bogie to be assembled, so that the first guide groove and the second guide groove are engaged and fixed on the anti-roll torsion bar of the bogie. Adjust the position of the clamping plate so that the positioning part clamps the rocker arm and the coaxiality of the positioning part and the anti-roll torsion bar of the bogie is within the standard range.

[0021] S3, Standard Position Acquisition Phase;

[0022] Take out the standard bushing and place it on the sleeve bracket. Adjust the posture of the sleeve bracket until the standard bushing is aligned with the anti-roll torsion bar of the bogie to be assembled. Select the thickness of the limiting shim so that the standard bushing is installed in the standard position of the anti-roll torsion bar of the bogie. After assembling the standard bushing, move the sleeve bracket back and forth along the axis of the anti-roll torsion bar of the bogie. If there is no jamming during the process, fix the posture of the sleeve bracket by the first locking member and the second locking member. Remove the standard bushing and put it back in its original position.

[0023] S4, shirt assembly stage;

[0024] Take out the connecting bushing to be assembled, heat the connecting bushing to 500°C, take out the heated connecting bushing and quickly place it on the sleeve bracket, move the sleeve bracket along the axis of the bogie anti-roll torsion bar to put the connecting bushing on the bogie anti-roll torsion bar and push it to contact the pad block, and wait for the temperature of the connecting bushing to drop to room temperature.

[0025] S5, Verification phase;

[0026] The assembly is inspected. If the assembly is qualified, it is marked as qualified and sent to the next work station; if the assembly is unqualified, the installed bushing is removed and reworked.

[0027] Compared with the prior art, the beneficial effects of the present invention are as follows: The present invention stabilizes the axis of the bogie by fixing the anti-roll torsion bar of the bogie with the positioning part, and further realizes the alignment and fitting of the heated connecting bushing by pre-aligning the alignment part with the anti-roll torsion bar of the bogie. It can achieve precise centering and rapid hot fitting, meet the requirements of the regulations and related processes, enhance the mechanization level of bushing hot fitting, shorten the hot fitting time, reduce hot fitting failures caused by temperature drop, and improve maintenance efficiency. Attached Figure Description

[0028] Figure 1 A three-dimensional structural view of the heat fitting tooling for the bogie anti-roll torsion bar connecting bushing;

[0029] Figure 2 This is a structural view of the positioning part;

[0030] Figure 3 This is a structural view of the clamping and adjusting assembly;

[0031] Figure 4 This is a structural view of the alignment section;

[0032] Figure 5 A view showing the connection structure between the second horizontal adjustment component and the vertical adjustment component;

[0033] Figure 6 This is a flowchart of the heat-fitting method for the anti-roll torsion bar connecting bushing of the bogie.

[0034] The numbers in the image represent:

[0035] 1-Positioning part; 2-Alignment part; 3-Connecting frame; 4-Bogie anti-roll torsion bar; 5-Connecting bushing; 11-Fixing plate; 12-Clamping plate; 13-Clamping adjustment assembly; 14-Adjusting plate; 15-Guide plate; 21-First horizontal adjustment assembly; 22-Second horizontal adjustment assembly; 23-Vertical adjustment assembly; 24-Sleeve bracket; 25-First locking element; 26-Second locking element; 27-Universal ball joint; 31-First cross plate; 32-Second cross plate; 33- 34-Connecting plate; 35-Mounting plate; 36-First handle; 37-Second handle; 111-First guide groove; 112-Padded block; 121-Allowing groove; 131-Clamping screw; 132-Clamping guide rail; 133-Clamping slider; 134-Rotating disk; 151-Second guide groove; 211-Guide horizontal plate; 212-First horizontal adjustment guide rail; 213-First adjustment platform; 221-Second horizontal adjustment guide rail; 222-Second adjustment platform; 241-Positioning plate. Detailed Implementation

[0036] The above-mentioned and other technical features and advantages of the present invention will be described in more detail below with reference to the accompanying drawings.

[0037] Example 1

[0038] like Figure 1 As shown, Figure 1 This is a three-dimensional structural view of the heat fitting tooling used for the anti-roll torsion bar connecting bushing of the bogie.

[0039] The hot fitting tooling for the bogie anti-roll torsion bar connecting bushing of the present invention includes a positioning part 1, an alignment part 2, and a connecting frame 3. The positioning part 1 is used to clamp and position the bogie anti-roll torsion bar 4. The alignment part 2 is used to place the connecting bushing 5. The connecting frame 3 connects the positioning part 1 and the alignment part 2, and realizes the connection bushing 5 to be sleeved and fixed to the end of the bogie anti-roll torsion bar 4.

[0040] Specifically, the connecting frame 3 includes a first horizontal plate 31, a second horizontal plate 32, and a connecting plate 33. The first horizontal plate 31 and the second horizontal plate 32 are arranged in parallel directions, and the two ends of the connecting plate 33 are respectively vertically connected to the ends of the first horizontal plate 31 and the second horizontal plate 32, thereby forming a Z-shaped connecting frame 3. The positioning part 1 is fixedly arranged on the first horizontal plate 31, and the alignment part 2 is fixedly arranged on the second horizontal plate 32.

[0041] Preferably, two connecting frames 3 are symmetrically arranged, and the ends of the connecting frames 3 are connected by mounting plates 34. The positioning part 1 is fixedly arranged between the two first horizontal plates 31, and the alignment part 2 is fixedly arranged between the two second horizontal plates 32, thereby ensuring the overall structural stability of the present invention.

[0042] Preferably, the mounting plate 34 is provided with a first handle 35 for adjusting the mounting position of the present invention and the bogie anti-roll torsion bar 4, so as to facilitate the movement of the present invention.

[0043] The present invention uses the positioning part 1 to fix the anti-roll torsion bar 4 of the bogie, thereby stabilizing its axis. Furthermore, the alignment part 2 pre-aligns the anti-roll torsion bar 4 of the bogie, thereby achieving the alignment and fitting of the heated connecting bushing 5. This allows for precise centering and rapid hot fitting, meeting the requirements of regulations and related processes. It enhances the mechanization level of bushing hot fitting, shortens the hot fitting time, reduces hot fitting failures caused by temperature drop, and improves maintenance efficiency.

[0044] Example 2

[0045] like Figure 2 and Figure 3 As shown, Figure 2 This is a structural view of the positioning part; Figure 3 This is a structural view of the clamping and adjusting assembly.

[0046] The positioning part 1 includes a fixing plate 11, a clamping plate 12, a clamping adjustment assembly 13, an adjustment plate 14, and a guide plate 15. The adjustment plate 14 is fixedly disposed between the two first horizontal plates 31. The fixing plate 11 and the guide plate 15 are respectively disposed at both ends of the adjustment plate 14, and the fixing plate 11 is disposed corresponding to the connecting plate 33. The clamping adjustment assembly 13 is fixedly disposed on the adjustment plate 14. The fixing plate 11, the clamping plate 12, and the guide plate 15 are arranged in parallel. The clamping plate 12... The clamping adjustment assembly 13 is connected to the clamping plate 12, and the clamping adjustment assembly 13 drives the clamping plate 12 to move in a direction perpendicular to the clamping plate 12. The clamping plate 12 is disposed between the fixing plate 11 and the guide plate 15. The fixing plate 11 and the guide plate 15 are used to fix the radial position of the bogie anti-roll torsion bar 4. The fixing plate 11 and the clamping plate 12 clamp and fix the rocker arm of the bogie anti-roll torsion bar 4 to fix the axial position of the bogie anti-roll torsion bar 4.

[0047] Specifically, the fixing plate 11 is provided with a first guide groove 111, the guide plate 15 is provided with a second guide groove 151, and the clamping plate 12 is provided with a clearance groove 121. Both the first guide groove 111 and the second guide groove 151 are arc-shaped grooves and are coaxially arranged. The axial direction of the first guide groove 111 is consistent with the adjustment direction of the clamping adjustment assembly 13 on the clamping plate 12. The second guide groove 151 is used to fix and snap onto the bogie anti-roll torsion bar 4 to ensure the axial state of the bogie anti-roll torsion bar 4 is stable. The clearance groove 121 facilitates the bogie anti-roll torsion bar 4 to pass through the clamping plate 12. The rocker arm of the bogie anti-roll torsion bar 4 is arranged between the fixing plate 11 and the clamping plate 12 and is clamped and fixed by the fixing plate 11 and the clamping plate 12, thereby realizing the axial position fixation of the bogie anti-roll torsion bar 4.

[0048] The clamping adjustment assembly 13 includes a clamping screw 131 and a clamping slider 133. One end of the clamping screw 131 passes through the guide plate 15 and is fixed to a rotating disk 134, while the other end is rotatably connected to the adjustment plate 14. The clamping screw 131 and the guide plate 15 are rotatably connected, and the clamping screw 131 and the clamping slider 133 are threadedly connected. The clamping plate 12 is fixedly mounted on the clamping slider 133. By rotating the clamping screw 131 through the rotating disk 134, the clamping slider 133 can move linearly along the clamping screw 131, thereby adjusting the relative distance between the clamping plate 12 and the fixing plate 11 to perform the clamping and fixing operation of the rocker arm.

[0049] Preferably, the clamping adjustment assembly 13 further includes a clamping guide rail 132, which is disposed on the adjustment plate 14, and the clamping guide rail 132 and the clamping screw 131 extend in the same direction. The clamping slider 133 is slidably connected to the clamping guide rail 132, thereby improving the stability of the clamping slider 133 during adjustment and movement.

[0050] Generally, the two ends of the fixing plate 11 are respectively fixedly connected to the two connecting plates 33 by bolts, thereby improving the structural stability of the positioning part 1 and ensuring the positioning of the bogie anti-roll torsion bar 4.

[0051] The adjustment plate 14 is provided with a second handle 36, which is used to raise or lower the anti-roll torsion bar 4 of the bogie relative to the present invention, so as to facilitate the movement of the present invention.

[0052] Example 3

[0053] like Figure 4and Figure 5 As shown, Figure 4 This is a structural view of the alignment section; Figure 5 This is a structural view of the connection between the second horizontal adjustment component and the vertical adjustment component.

[0054] The alignment part 2 includes a first horizontal adjustment component 21, a second horizontal adjustment component 22, a vertical adjustment component 23, and a sleeve bracket 24. The sleeve bracket 24 is movably connected to the vertical adjustment component 23 via a universal ball joint 27. The connecting bushing 5 is disposed on the sleeve bracket 24. The vertical adjustment component 23 is disposed on the second horizontal adjustment component 22. The vertical adjustment component 23 drives the sleeve bracket 24 to adjust and move in the vertical direction. The second horizontal adjustment component 22 is disposed on the first horizontal adjustment component 21. The first horizontal adjustment component 21 and the second horizontal adjustment component 22 drive the sleeve bracket 24 to adjust and move in the horizontal direction.

[0055] Specifically, the first horizontal adjustment component 21 includes a guide plate 211, a first horizontal adjustment guide rail 212, and a first adjustment platform 213. The guide plate 211 is fixedly mounted on the second horizontal plate 32, and the first horizontal adjustment guide rail 212 is mounted on the guide plate 211. The extension directions of the guide plate 211, the second horizontal plate 32, and the first horizontal adjustment guide rail 212 are all consistent. The first adjustment platform 213 is slidably connected to the first horizontal adjustment guide rail 212, and the second horizontal adjustment component 22 is fixedly mounted on the first adjustment platform 213, thereby enabling the sleeve bracket 24 to move linearly along the first horizontal adjustment guide rail 212.

[0056] The second horizontal adjustment component 22 includes a second horizontal adjustment guide rail 221 and a second adjustment platform 222. The second horizontal adjustment guide rail 221 is fixedly disposed at the bottom of the first adjustment platform 213. The second adjustment platform 222 is slidably connected to the second horizontal adjustment guide rail 221. The vertical adjustment component 23 is fixedly disposed on the second adjustment platform 222. Both the first adjustment platform 213 and the second adjustment platform 222 are provided with through holes. The vertical adjustment component 23 passes through the through holes and connects to the universal ball joint 27 to realize the connection structure of the alignment part 2.

[0057] Generally, the first horizontal adjustment guide rail 212 and the second horizontal adjustment guide rail 221 both extend horizontally, and the extension directions of the first horizontal adjustment guide rail 212 and the second horizontal adjustment guide rail 221 are set vertically, so that the sleeve bracket 24 can be freely adjusted through the first horizontal adjustment component 21 and the second horizontal adjustment component 22.

[0058] Preferably, the vertical adjustment assembly 23 includes a fixed block and an adjusting rod. The fixed block is fixedly mounted on the second adjustment platform 222, and the adjusting rod is threadedly connected to the fixed block and is vertically positioned. The top end of the adjusting rod is fixedly connected to the universal ball joint 27. The vertical height of the sleeve bracket 24 can be adjusted by rotating the adjusting rod. It is worth noting that the fixed block can also be directly sleeved on the adjusting rod, and the adjusting rod can move directly vertically to adjust the vertical height of the sleeve bracket 24.

[0059] The alignment part 2 adjusts the sleeve bracket 24 with six degrees of freedom through the first horizontal adjustment component 21, the second horizontal adjustment component 22 and the vertical adjustment component 23, thereby ensuring the alignment and fitting of the connecting bushing 5 placed on the sleeve bracket 24 with the bogie anti-roll torsion bar 4.

[0060] Preferably, the second horizontal adjustment assembly 22 is provided with a first locking member 25 for locking the relative positions of the first adjustment platform 213 and the second adjustment platform 222, and the vertical adjustment assembly 23 is provided with a second locking member 26 for locking the relative positions of the fixing block and the adjusting rod. Thus, after the sleeve support 24 is adjusted to a standard state by means of the standard bushing, the vertical and horizontal radial positions of the sleeve support 24 are locked, so that the sleeve support 24 can only move axially, thereby ensuring the coaxiality of the connecting bushing 5 on the sleeve support 24 and the bogie anti-roll torsion bar 4 on the positioning part 1.

[0061] Generally, the sleeve support 24 is provided with a placement groove, which is an arc groove, for placing the connecting bushing 5. The sleeve support 24 is made of special manganese steel, which can effectively reduce the temperature drop of the bushing.

[0062] A pad 112 is provided on the side of the fixing plate 11 near the alignment part 2, and a positioning plate 241 is provided on the end of the sleeve bracket 24 away from the fixing plate 11. By setting the pads 112 of different thicknesses, the limiting dimension of the connecting bushing 5 after it is installed on the shaft end can be adjusted. When the connecting bushing 5 is fitted on the bogie anti-roll torsion bar 4 and pushed to contact the pad 112 under the pushing action of the positioning plate 241, the connecting bushing 5 is ensured to be installed at the position required by the process. The pads 112 of different thicknesses can also be adapted to anti-roll torsion bars of different train models.

[0063] Example 4

[0064] like Figure 6 As shown, Figure 6 This is a flowchart of the heat-fitting method for the anti-roll torsion bar connecting bushing of the bogie.

[0065] The hot-fitting method for the bogie anti-roll torsion bar connecting bushing of the present invention includes the following steps:

[0066] S1, Preparation Phase;

[0067] Fill out the work order, check whether the tools and equipment are in good working order, place the anti-roll torsion bar 4 of the bogie to be assembled into the assembly station, determine the part number, and complete the preparation stage.

[0068] S2, Installation phase;

[0069] Place the positioning part 1 on the anti-roll torsion bar 4 of the bogie to be assembled, so that the first guide groove 111 and the second guide groove 151 are engaged and fixed on the anti-roll torsion bar 4 of the bogie. Adjust the position of the clamping plate 12 so that the positioning part 1 clamps the rocker arm and the coaxiality of the positioning part 1 and the anti-roll torsion bar 4 of the bogie is within the standard range.

[0070] S3, Standard Position Acquisition Phase;

[0071] Remove the standard bushing and place it on the sleeve bracket 24. Adjust the posture of the sleeve bracket 24 until the standard bushing is aligned with the bogie anti-roll torsion bar 4 to be assembled. Select the thickness of the limiting shim so that the standard bushing is installed in the standard position of the bogie anti-roll torsion bar 4. After assembling the standard bushing, move the sleeve bracket 24 back and forth along the axis of the bogie anti-roll torsion bar 4. If there is no jamming during the process, the posture of the sleeve bracket 24 can be fixed, the standard bushing can be removed, and placed back in its original position.

[0072] S4, shirt assembly stage;

[0073] Take out the connecting bushing 5 to be assembled, heat the connecting bushing 5 to 500°C, take out the heated connecting bushing 5 and quickly place it on the sleeve bracket 24, move the sleeve bracket 24 along the axis of the bogie anti-roll torsion bar 4 to put the connecting bushing 5 on the bogie anti-roll torsion bar 4 and push it to contact the pad block 112, and wait for the temperature of the connecting bushing 5 to drop to room temperature;

[0074] S5, Verification phase;

[0075] The assembly is inspected. If the assembly is qualified, it is marked as qualified and sent to the next station; if the assembly is unqualified, the installed bushing must be removed and reworked.

[0076] This invention overcomes the drawbacks of existing manual methods, such as the inability to achieve coaxiality and high rework rates, and requires only one operator to complete all hot-fitting operations. In terms of maintenance time, it reduces the time from 1920 minutes per standard group to only 360 minutes per standard group. In terms of maintenance process, it makes up for the deficiency that current maintenance tools cannot guarantee the coaxiality of the bushings, making the hot-fitting of bushings more efficient and of higher quality.

[0077] The above description is merely a preferred embodiment of the present invention and is illustrative rather than restrictive. Those skilled in the art will understand that many changes, modifications, and even equivalents can be made within the spirit and scope defined by the claims of the present invention, all of which will fall within the protection scope of the present invention.

Claims

1. A heat-fitting fixture for a bogie anti-roll torsion bar connecting bushing, characterized in that, It includes a positioning part, an alignment part, and a connecting frame, wherein the connecting frame connects the positioning part and the alignment part; The positioning part includes a fixed plate, a clamping plate, a clamping adjustment assembly, an adjustment plate, and a guide plate. The adjustment plate is fixed on the connecting frame. The fixed plate and the guide plate are respectively disposed at both ends of the adjustment plate, and the fixed plate is disposed at one end closer to the alignment part. The clamping adjustment assembly is fixedly disposed on the adjustment plate. The fixed plate, the clamping plate, and the guide plate are arranged in parallel. The clamping plate is connected to the clamping adjustment assembly, and the clamping adjustment assembly drives the clamping plate to move in a direction perpendicular to the clamping plate. The clamping plate is disposed between the fixed plate and the guide plate. The rocker arm of the bogie anti-roll torsion bar is disposed between the fixed plate and the clamping plate. A pad is disposed on the side of the fixed plate closer to the alignment part. The alignment part includes a first horizontal adjustment component, a second horizontal adjustment component, a vertical adjustment component, and a sleeve bracket. The sleeve bracket is movably connected to the vertical adjustment component via a universal ball joint. The connecting bushing is disposed on the sleeve bracket. The vertical adjustment component is disposed on the second horizontal adjustment component, and the vertical adjustment component drives the sleeve bracket to adjust and move in the vertical direction. The second horizontal adjustment component is disposed on the first horizontal adjustment component, and the first and second horizontal adjustment components drive the sleeve bracket to adjust and move in the horizontal direction. The second horizontal adjustment component is provided with a first locking member for locking the position of the sleeve bracket on the second horizontal adjustment component, and the vertical adjustment component is provided with a second locking member for locking the position of the sleeve bracket on the vertical adjustment component. The connecting frame includes a first horizontal plate, a second horizontal plate, and a connecting plate. The first horizontal plate and the second horizontal plate extend in parallel directions, and the two ends of the connecting plate are respectively perpendicularly connected to the ends of the first horizontal plate and the second horizontal plate, thereby forming a Z-shaped connecting frame. The positioning part is fixedly disposed on the first horizontal plate, and the alignment part is fixedly disposed on the second horizontal plate. Two connecting frames are symmetrically arranged, and the ends of the connecting frames are connected by mounting plates. The adjusting plate is fixedly arranged between the two first horizontal plates, and the fixing plate is arranged corresponding to the connecting plate. The first horizontal adjusting component is arranged between the two second horizontal plates. The first horizontal adjustment component includes a guide plate, a first horizontal adjustment rail, and a first adjustment platform. The guide plate is fixedly mounted on the second horizontal plate, and the first horizontal adjustment rail is mounted on the guide plate. The extension directions of the guide plate, the second horizontal plate, and the first horizontal adjustment rail are all consistent. The first adjustment platform is slidably connected to the first horizontal adjustment rail, and the second horizontal adjustment component is fixedly mounted on the first adjustment platform. The second horizontal adjustment component includes a second horizontal adjustment guide rail and a second adjustment platform. The second horizontal adjustment guide rail is fixedly installed at the bottom of the first adjustment platform. The second adjustment platform is slidably connected to the second horizontal adjustment guide rail. The vertical adjustment component is fixedly installed on the second adjustment platform. Both the first adjustment platform and the second adjustment platform are provided with through holes. The vertical adjustment component passes through the through holes and connects to the universal ball joint. Both the first horizontal adjustment rail and the second horizontal adjustment rail extend horizontally, and the extension directions of the first horizontal adjustment rail and the second horizontal adjustment rail are set perpendicularly.

2. The heat-fitting fixture for the bogie anti-roll torsion bar connecting bushing as described in claim 1, characterized in that, The fixed plate is provided with a first guide groove, the guide plate is provided with a second guide groove, and the clamping plate is provided with a clearance groove. Both the first guide groove and the second guide groove are arc-shaped grooves and are coaxially arranged. The axial direction of the first guide groove is consistent with the adjustment direction of the clamping adjustment assembly on the clamping plate. The bogie anti-roll torsion bar is simultaneously arranged in the first guide groove, the second guide groove, and the clearance groove.

3. The heat-fitting fixture for the bogie anti-roll torsion bar connecting bushing as described in claim 2, characterized in that, The clamping adjustment assembly includes a clamping screw and a clamping slider. One end of the clamping screw passes through the guide plate and is fixed to a rotating disk, while the other end is rotatably connected to the adjustment plate. The clamping screw and the guide plate are rotatably connected, and the clamping screw and the clamping slider are threadedly connected. The clamping plate is fixedly mounted on the clamping slider.

4. The heat-fitting fixture for the bogie anti-roll torsion bar connecting bushing as described in claim 1, characterized in that, The vertical adjustment assembly includes a fixed block and an adjusting rod. The fixed block is fixedly mounted on the second adjustment platform. The adjusting rod is threadedly connected to the fixed block and is vertically positioned. The top end of the adjusting rod is fixedly connected to the universal ball joint.

5. A method for heat-fitting a bogie anti-roll torsion bar connecting bushing, characterized in that, The hot fitting tooling for the bogie anti-roll torsion bar connecting bushing according to any one of claims 2-4 includes the following steps: S1, Preparation Phase; Place the anti-roll torsion bar of the bogie to be assembled at the assembly station; S2, Installation phase; Place the positioning part on the anti-roll torsion bar of the bogie to be assembled, so that the first guide groove and the second guide groove are engaged and fixed on the anti-roll torsion bar of the bogie. Adjust the position of the clamping plate so that the positioning part clamps the rocker arm and the coaxiality of the positioning part and the anti-roll torsion bar of the bogie is within the standard range. S3, Standard Position Acquisition Stage; Take out the standard bushing and place it on the sleeve bracket. Adjust the posture of the sleeve bracket until the standard bushing is aligned with the anti-roll torsion bar of the bogie to be assembled. Select the thickness of the limiting shim so that the standard bushing is installed in the standard position of the anti-roll torsion bar of the bogie. After assembling the standard bushing, move the sleeve bracket back and forth along the axis of the anti-roll torsion bar of the bogie. If there is no jamming during the process, fix the posture of the sleeve bracket by the first locking member and the second locking member, remove the standard bushing and put it back in its original position. S4, shirt assembly stage; Take out the connecting bushing to be assembled, heat the connecting bushing to 500°C, take out the heated connecting bushing and quickly place it on the sleeve bracket, move the sleeve bracket along the axis of the bogie anti-roll torsion bar to put the connecting bushing on the bogie anti-roll torsion bar and push it to contact the pad block, and wait for the temperature of the connecting bushing to drop to room temperature. S5, Verification phase; The assembly is inspected. If the assembly is qualified, it is marked as qualified and sent to the next work station; if the assembly is unqualified, the installed connecting bushing is removed and reworked.

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