A press-fit rotating device and assembly welding process for locomotive traction rod

Abstract

The present invention provides a press-fit rotating device and assembly welding process for a locomotive traction rod, and relates to the technical field of locomotive processing. The device comprises: a reducer, a first support seat, a first horizontal body, a cylindrical support body, a gantry walking body, a second horizontal body and a second support seat, which are sequentially arranged on a platform from left to right. A first slewing bearing is arranged in the first support seat, a second slewing bearing is arranged in the second support seat, the second slewing bearing is connected to a slewing plate, the slewing plate is connected to an oil cylinder, a swivel joint body is arranged on the oil cylinder, and the slewing plate is connected to a second flange swivel body. The present invention ensures that the positional relationship between the first flange, the second flange and the cylinder body does not change during the rotation welding of rod-shaped components such as traction rods, thereby solving the problem that rod-shaped components such as traction rods always need preheating and tack welding before tack welding, thereby improving production efficiency and reducing the probability of welding defects.

Description

Technical Field

[0001] The present invention relates to the technical field of locomotive processing, and in particular to a press-fit rotating device and an assembly welding process for a locomotive traction rod. Background Art

[0002] As the main load-bearing part of the locomotive steel structure, the traction rod is mainly composed of the traction rod tube and flanges at both ends. The welding quality of the traction rod directly affects the performance of the locomotive's running safety. The traction rod is the only load-bearing part connecting the car body and the bogie, and it bears the combined effects of impact force and tension, so the strength and toughness of its welds are extremely high.

[0003] At present, the process of locomotive traction rod mainly includes four steps: 1. Assemble on special fixtures. 2. Preheat and perform tack welding. 3. Preheat and weld on special welding fixtures. 4. Processing. Among them, welding is the key to determine whether the traction rod is successful. The existing technology always requires the step of preheating and applying tack welding.

[0004] However, the existing locomotive traction rod assembly welding process has certain disadvantages. Because the flange surfaces at both ends have a parallel or vertical relative position requirement, the existing process must first use installation equipment and tools to position and clamp the traction rod tube body and the flanges at both ends of the traction rod; in order to facilitate the insertion of the flanges at both ends into the middle rod tube, the flange and the rod tube are designed to be a clearance fit, so the traction rod tube body and the flanges at both ends must also be preheated and tack welded, otherwise the traction rod tube body and the flanges at both ends will no longer maintain a relative positional relationship during the next welding rotation process, and welding defects are likely to occur in this process. The existence of this step reduces the efficiency of the entire traction rod assembly welding; in addition, the weld needs to be polished after the tack welding is applied. Generally, weld flaw detection is performed after the traction rod is fully welded. Therefore, if a welding defect occurs at the tack weld, the weld here must be polished to the root before repair. Summary of the invention

[0005] According to the above-mentioned problem that the positional relationship between the traction rod tube body and the flanges at both ends is always guaranteed not to change during the rotation welding of the traction rod and other rod-shaped parts, so that the traction rod needs to be preheated and tack welded, a press-fitting rotating device and assembly welding process of a locomotive traction rod are provided. The present invention mainly utilizes a press-fitting rotating device, which can not only ensure the positional requirements between the flange surfaces at both ends during the press-fitting process, but also ensure that the radial direction of the cylindrical surface does not generate a rigid constraint force on its freedom degree during the micro-alignment process in accordance with the press-fitting force during the press-fitting process, so that the positional relationship between the traction rod tube body and the flanges at both ends does not change.

[0006] The technical means adopted by the present invention are as follows:

[0007] A press-fit rotating device for a locomotive traction rod comprises: a reducer, a first support seat, a first horizontal body, a cylindrical support body, a gantry walking body, a second horizontal body and a second support seat, which are sequentially arranged on a platform from left to right, wherein a first slewing bearing is arranged in the first support seat, the first slewing bearing is connected to a first flange rotating body, a first flange is arranged in the first flange rotating body, the reducer is connected to a first coupling, the first coupling is connected to one end of a first shaft, the other end of the first shaft is inserted into the first flange rotating body, a rotating plug rod is vertically arranged on the first coupling, the first horizontal body is connected to a first cylinder arranged in the platform, the second horizontal body is connected to a second cylinder arranged in the platform, and a cylinder support body is provided with a cylinder body and a cylinder support body. The roller rolls with the cylinder, and the two ends of the cylinder are respectively connected to the first flange and the second flange, and the gantry walking body moves along the longitudinal direction of the platform. A second slewing bearing is arranged in the second support seat, and the second slewing bearing is connected to the turntable, and the turntable is connected to the oil cylinder, and a rotating joint body is arranged on the oil cylinder, and the turntable is connected to the second flange rotating body, and a slide assembly is arranged on the second flange rotating body, and a sliding pressing body that can move along the horizontal longitudinal direction is arranged above the slide assembly, and the sliding pressing body is connected to the rotating joint body by bolts, and a second flange positioning body is inserted in the sliding pressing body, and a second flange and a cylinder pressing column are arranged in the second flange positioning body, and an adjusting screw is arranged on the second flange positioning body and connected to the cylinder pressing column.

[0008] Furthermore, the first cylinder and the second cylinder drive the first horizontal body and the second horizontal body to move up and down in the vertical direction. When rotating, the first horizontal body and the second horizontal body are at the lower limit position. When not rotating, the uppermost ends of the first horizontal body and the second horizontal body are in contact with the lowermost ends of the first flange rotating body and the second flange rotating body.

[0009] Furthermore, the rotating rod is a detachable structure.

[0010] Furthermore, the first flange rotating body is provided with a vertical clamping screw, a left adjusting screw and a right adjusting screw for adjusting the flange position.

[0011] Furthermore, the roller is provided with rubber for buffering, and the interior of the gantry walking body is provided with a cylinder to compress the rubber block.

[0012] Furthermore, the sliding press-fit body is provided with a left-side adjusting rubber block, a right-side adjusting rubber block and a vertical adjusting rubber block.

[0013] The present invention also provides a locomotive traction rod assembly welding process, which is implemented based on the above-mentioned locomotive traction rod press-fitting rotating device, and includes the following steps:

[0014] Interference fit is adopted at the connection between the two ends of the cylinder and the first flange and the second flange, and lead-in angles are provided on the first flange and the second flange;

[0015] The first cylinder and the second cylinder drive the first horizontal body and the second horizontal body to move upward until the uppermost end of the first horizontal body fits with the lowermost end of the first flange rotating body, and the uppermost end of the second horizontal body fits with the lowermost end of the second flange rotating body, and the first flange rotating body and the second flange rotating body are in a horizontal position;

[0016] The cylinder moves to the right and the piston rod is in the retracted state, which is the initial position;

[0017] Installing the first flange into the first flange rotating body, and installing the cylinder onto the cylinder support body;

[0018] Rotate the adjusting screw to push the cylinder press-fit column into the cylinder until the left end surface of the cylinder press-fit column fits with the right end surface of the outer side of the cylinder;

[0019] The oil cylinder drives the sliding press-fitting body to move, and the sliding press-fitting body is installed on the slide assembly. The second flange positioning body, the cylinder press-fitting column, and the adjusting screw interact with each other to push the cylinder to move leftward, so that the right end face of the first flange is close to the left end face of the cylinder, and the adjusting screw is adjusted to make the right end face of the first flange fit with the left end face of the cylinder;

[0020] Adjust the screws on the gantry walking body to make the cylinder press the rubber block downward until the axis of the cylinder moves downward and coincides with the axis of the first flange in the vertical direction. Adjust the left and right adjusting screws to make the axis of the cylinder coincide with the axis of the first flange in the horizontal direction. Adjust the adjusting screws to press the first flange into the cylinder.

[0021] Start the oil cylinder to move to the left to press the first flange into the cylinder until the right end surface of the first flange fits with the left end surface of the outer side of the cylinder, and the first flange and the cylinder are assembled;

[0022] Start the oil cylinder to return to the initial position to the right, adjust the vertical clamping screw to finally clamp the first flange, and rotate the adjusting screw to move the cylinder press column to the right and return to the initial position;

[0023] Installing the second flange into the second flange positioning body;

[0024] The cylinder moves to the left until the left end face of the second flange is a certain distance away from the right end face of the cylinder;

[0025] Adjust the adjusting screw to move the cylinder to the left until the left end face of the second flange fits with the right end face of the cylinder;

[0026] The adjusting screw drives the vertical adjusting rubber block to move up and down, so that the second flange positioning body moves up and down with the vertical adjusting rubber block until the second flange coincides with the center line of the cylinder in the vertical direction; the adjusting screw drives the left adjusting rubber block and the right adjusting rubber block to move left and right, and at the same time drives the second flange positioning body to move left and right until the second flange coincides with the center line of the cylinder in the horizontal direction, and the adjusting screw is adjusted to press the second flange into the cylinder;

[0027] The oil cylinder is started to move leftward to press the second flange into the cylinder until the left end surface of the second flange (19) fits with the right end surface of the outer side of the cylinder (17), and the second flange and the cylinder are assembled;

[0028] Loosen the left-side adjusting rubber block, the right-side adjusting rubber block and the cylinder pressing rubber block;

[0029] Installing a rotating plunger on the first coupling;

[0030] The first cylinder and the second cylinder drive the first horizontal body and the second horizontal body to move downward until the first horizontal body and the second horizontal body are at the lower limit position;

[0031] The reducer is started to drive the cylinder, the first flange and the second flange to rotate and weld.

[0032] Furthermore, when installing the first flange, adjust the vertical clamping screw to preliminarily clamp the first flange, and adjust the left adjusting screw and the right adjusting screw to preliminarily adjust the first flange into place.

[0033] Compared with the prior art, the present invention has the following advantages:

[0034] The present invention provides a press-fitting rotating device for a locomotive traction rod, so that during the rotation welding process of the traction rod and other rod-shaped components, the positional relationship between the first flange, the second flange and the cylinder body is always guaranteed not to change, thereby solving the problem that the traction rod and other rod-shaped components always need to be preheated and tack-welded, thereby improving production efficiency and reducing the probability of welding defects. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0036] Figure 1 This is a front cross-sectional view of the first embodiment of the present invention.

[0037] Figure 2 For the present invention Figure 1Enlarged view of the middle AA surface.

[0038] Figure 3 It is a left sectional view of the first embodiment of the present invention.

[0039] Figure 4 This is a schematic diagram of the installation of the cylinder in Example 1 of the present invention.

[0040] Figure 5 It is a right side cross-sectional view of the first embodiment of the present invention.

[0041] Figure 6 For the present invention Figure 5 Enlarged view of point I in the middle.

[0042] Figure 7 This is a front cross-sectional view of embodiment 3 of the present invention.

[0043] Figure 8 It is a right side cross-sectional view of the third embodiment of the present invention.

[0044] Fig. 9 It is a schematic diagram of the locomotive traction rod of the present invention.

[0045] In the figure: 1, platform; 2, reducer; 3, first support seat; 4, first horizontal body; 5, cylindrical support body; 6, gantry walking body; 7, second horizontal body; 8, second support seat; 9, first slewing bearing; 10, first flange rotating body; 11, first flange; 12, first coupling; 13, first shaft; 14, rotating rod; 15, first cylinder; 16, second cylinder; 17, cylinder; 18, roller; 19, second flange; 20, second slewing bearing; 2 1. Turntable; 22. Cylinder; 23. Rotary joint body; 24. Second flange rotating body; 25. Slideway assembly; 26. Sliding press-fit body; 27. Second flange positioning body; 28. Cylinder press-fit column; 29. ​​Vertical clamping screw; 30. Left-side adjusting screw; 31. Right-side adjusting screw; 32. Cylinder clamping rubber block; 33. Left-side adjusting rubber block; 34. Right-side adjusting rubber block; 35. Vertical adjusting rubber block; 36. Adjusting screw; 37. Second flange rotating body. DETAILED DESCRIPTION

[0046] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0047] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0048] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0049] Unless otherwise specifically stated, the relative arrangement of the parts and steps described in these embodiments, the numerical expressions and numerical values ​​do not limit the scope of the present invention. At the same time, it should be clear that, for ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0050] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention: the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0051] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below their position devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0052] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0053] Example 1

[0054] A press-fit rotating device for a locomotive traction rod, wherein both ends of a cylinder 17 are interference-fitted with a first flange 11 and a second flange 19, such as Figure 1-6 and Fig. 9 shown.

[0055] The reducer 2 and the platform 1 are connected with bolts, the first coupling 12 is connected with the reducer 2, the first support seat 3 and the platform 1 are connected with bolts, each of which is processed with a protrusion to withstand the longitudinal force applied by the oil cylinder 22, the first slewing bearing 9 and the first support seat 3 are connected with bolts, the first flange rotating body 10 and the first slewing bearing 9 are connected with bolts, the first flange rotating body 10 can rotate with the first slewing bearing 9, the right end of the first shaft 13 is inserted into the first flange rotating body 10, and a flat key is designed and installed on it. The rotating plug rod 14 is inserted at the left end of the first shaft 13. When the reducer 2 rotates, the rotating plug rod 14 can be driven to rotate through the first coupling 12, thereby driving the first shaft 13, the first slewing bearing 9, and the first flange rotating body 10 to rotate at the same time. The rotating plug rod 14 is detachable. When the first coupling 12 is not needed to drive the corresponding components to rotate, the rotating plug rod 14 can be removed.

[0056] The vertical clamping screw 29, the left adjusting screw 30, and the right adjusting screw 31 are installed on the first flange rotating body 10. The function of the vertical clamping screw 29 is to ensure that the lower end surface of the first flange 11 is tightly fitted with the first flange rotating body 10, thereby ensuring the level of the first flange 11. The left adjusting screw 30 and the right adjusting screw 31 are used to adjust the position of the first flange 11. The function of all the above components is to install, position and clamp the first flange 11.

[0057] The first horizontal body 4 and the second horizontal body 7 are connected to the platform 1 through a slide assembly, the first cylinder 15 can drive the horizontal body 4 to move vertically up and down, and the second cylinder 16 can drive the horizontal body 7 to move vertically up and down. When rotating, the first horizontal body 4 and the second horizontal body 7 are at the lower limit position, and when not rotating, the uppermost ends of the first horizontal body 4 and the second horizontal body 7 are in contact with the lowermost end of the first flange rotating body 10 and the lowermost end of the second flange rotating body 24. Since the uppermost ends of the first horizontal body 4 and the second horizontal body are always a horizontal plane, when the uppermost ends of the first horizontal body 4 and the second horizontal body 7 are in contact with the lowermost end of the first flange rotating body 10 and the lowermost end of the second flange rotating body 24, it can be ensured that the first flange rotating body 10 and the second flange rotating body 24 are in the horizontal position shown in the figure, and the first flange 11 and the second flange 19 are parallel to each other.

[0058] The cylindrical support body 5 and the platform 1 are connected to each other by bolts, and the roller 18 is installed on the cylindrical support body 5. The roller 18 is used to support the cylinder 17. The roller 18 is installed with rubber to play a buffering and regulating role. The roller 18 can roll with the cylinder 3 when it rotates. The gantry walking body 6 can move in the longitudinal direction of the platform 1. The gantry walking body 6 is installed with wheels. When the cylinder needs to be pressed, it moves to the required position. When the workpiece needs to be taken out, it moves to the two ends of the longitudinal direction of the platform. The cylinder pressing rubber block 32 is connected to the gantry walking body 6 with a screw as a carrier. Rotating the screw can move the cylinder pressing rubber block 32 up and down, and indirectly press the cylinder. The most important function of the rubber on the roller 18 and the cylinder pressing rubber block 32 is to ensure that the cylinder 3 can move radially slightly during the press-fitting and centering process, and to ensure that no radial rigid constraints are generated during the press-fitting and centering process to damage the workpiece.

[0059] The second support seat 8 is connected to the platform 1 by bolts, and each of them is processed with a protrusion, which can withstand the longitudinal force applied by the oil cylinder 22. The second slewing bearing 20 is connected to the second support seat 8 by bolts, and the slewing plate 21 is connected to the second slewing bearing 20 by bolts. The slewing plate 21 can rotate with the second slewing bearing 20. The oil cylinder 22 is connected to the slewing plate 21 by bolts and can rotate with the slewing plate 21. The oil cylinder 22 is equipped with a slewing joint body 23. The main function of the oil cylinder 22 here is to generate the press-fitting force required for the interference fit assembly.

[0060] The second flange rotating assembly includes: a second flange rotating body 24, a sliding pressing body 26, a second flange positioning body 27, a cylinder pressing column 28, an adjustment screw 36, a left adjustment rubber block 33, a right adjustment rubber block 34, a vertical adjustment rubber block 35, and a slideway assembly 25. The second flange rotating assembly is connected to the rotating disk 21 by bolts and can rotate with the rotating disk 21.

[0061] The lower end of the slideway assembly 25 is connected to the second flange rotating body 24, and the upper end is connected to the sliding press body 26. The sliding press body 26 can move in the horizontal longitudinal direction. The second flange positioning body 27 is inserted into the sliding press body 26. There is a floating gap between the second flange positioning body 27 and the left and right sides of the sliding press body 26, which ensures that the second flange positioning body 27 can move up and down in the sliding press body 26. At the same time, it can also ensure that the second flange 19 is always horizontal during the up and down movement of the second flange positioning body 27. The second flange 19 is installed in the second flange positioning body 27, so that the upper and lower end surfaces of the second flange 19 are always horizontal. The cylinder press column 28 is inserted into the second flange positioning body 27, and the adjustment screw 36 is installed on the second flange positioning body 27 and connected to the cylinder press column 28. Rotating the adjustment screw 36 can drive the cylinder press column 28 to move left and right in the second flange positioning body 27. The cylinder press-fitting column 28 can directly contact the cylinder 17 through the end face of the cylinder press-fitting column to achieve press-fitting of the cylinder 17. The cylinder press-fitting column 28 can directly contact the outer right end face of the second flange through the end face of the cylinder press-fitting column to achieve press-fitting of the second flange 19. The adjustment screw 36 drives the movement of the cylinder press-fitting column 28 to indirectly drive the cylinder and the second flange 19 to move slowly, ensuring that no damage is caused to the workpiece during the centering process. The left-side adjusting rubber block 33, the right-side adjusting rubber block 34, and the vertical adjusting rubber block 35 are installed in the sliding press-fitting body 26, and can move left and right and up and down under the drive of the screws to achieve horizontal and vertical centering of the second flange 19 and the cylinder. The most important function of the left-side adjusting rubber block 33, the right-side adjusting rubber block 34, and the vertical adjusting rubber block 35 is to ensure that the second flange 19 can be slightly moved vertically and horizontally during the press-fitting centering process, ensuring that no radial rigid constraints are generated during the press-fitting centering process to damage the workpiece. The installation method of the vertical adjusting rubber block 35 is as follows Figure 6 As shown, this method can ensure that there is adjustment both up and down.

[0062] Example 2

[0063] Based on Example 1, the present invention also provides a locomotive traction rod assembly welding process.

[0064] The assembly of the flanges at both ends and the middle cylinder 17 all adopts interference fit, with a combined length of 22mm, a maximum interference of 0.166mm, a minimum interference of 0.109mm, an inner diameter of the contained part of 99mm, a matching diameter of 115mm, an outer diameter of the contained part of 133mm, a minimum press-fitting force of about 1.1 tons, and a maximum press-fitting force of about 1.7 tons. The torque is about 666NM.

[0065] The first cylinder 15 and the second cylinder 16 drive the first horizontal body 4 and the second horizontal body 7 to move upward until the uppermost ends of the first horizontal body 4 and the second horizontal body 7 are in contact with the lowermost ends of the first flange rotating body 10 and the second flange rotating body 24. At this time, the first flange rotating body 10 and the second flange rotating body 24 are in a horizontal position.

[0066] The cylinder moves to the right to retract the piston rod, which is the initial position of the cylinder and corresponding components.

[0067] Install the first flange 11 in the first flange rotating body 10. At this time, the lower end surface of the first flange 11 is in contact with the lower first flange rotating body 10. Adjust the vertical clamping screw 29 to preliminarily clamp the first flange 11. Repeatedly adjust the left adjusting screw 30 and the right adjusting screw 31 to preliminarily adjust the first flange 11 into place.

[0068] The cylinder 17 is mounted on the cylinder support 5 .

[0069] The adjusting screw 36 is rotated to push the cylinder press-fitting column 28 into the cylinder 17 until the left end surface of the cylinder press-fitting column fits with the right end surface of the outer side of the cylinder;.

[0070] The oil cylinder 22 moves, driving the sliding press body 26 to move. The sliding press body 26 is installed on the slide assembly, and then through the interaction of the second flange positioning body 27, the cylinder press column 28, and the adjusting screw 36, the cylinder 17 is finally pushed to the left, so that the right end face of the first flange is close to the left end face of the cylinder.

[0071] The adjusting screw 36 is manually adjusted to move the cylinder 17 to the left until the right end surface of the first flange fits with the left end surface of the cylinder.

[0072] Since the axis of the cylinder 17 is slightly higher than the axis of the first flange 11 in the design, the screws on the gantry walking body 6 are adjusted to make the cylinder pressing rubber block 32 act downward until the axis of the cylinder 17 moves downward until it coincides with the axis of the first flange 11 in the vertical direction. During this process, the left adjusting screw 30 and the right adjusting screw 31 are adjusted at any time to make the axis of the cylinder 17 coincide with the axis of the first flange 11 in the horizontal direction.

[0073] Along with the above process, the adjusting screw 36 should be manually adjusted at any time to slowly press the cylinder 17 into the first flange 11. Since the pressure of the adjusting screw 36 is limited, the pressing depth is limited. This process is mainly to ensure that the workpiece will not be damaged during the initial pressing of the cylinder 17 through the lead-in angle on the first flange 11. The adjustment and pressing process can also be directly carried out by the oil cylinder 22, but the electrical and hydraulic control accuracy requirements are relatively high. The rubber on the cylinder support roller and the cylinder pressing rubber block 32 ensure that the cylinder 17 can be adaptively adjusted in a slight amount during the pressing process, and no large stress constraint will be generated to damage the workpiece.

[0074] Continue to start the oil cylinder to move leftward to press the first flange 11 into the cylinder 17 until the right end surface of the first flange 11 fits with the left end surface outside the cylinder 17. At this time, the first flange 11 and the cylinder 17 are assembled.

[0075] The oil cylinder 22 moves rightward to return to the initial position, the vertical clamping screw 29 is adjusted to finally clamp the first flange 11, and the adjusting screw 36 is rotated to move the cylinder press column 28 rightward to return to the initial position.

[0076] The second flange 19 is installed in the second flange positioning body 27 .

[0077] The oil cylinder moves to the left until the left end face of the second flange is a certain distance away from the right end face of the cylinder.

[0078] Manually adjust the adjusting screw 36 to move the cylinder 17 to the left until the left end surface of the second flange fits with the right end surface of the cylinder;

[0079] The adjusting screw drives the vertical adjusting rubber block 35 to move up and down, and at the same time, the second flange positioning body 27 will also move up and down until the second flange 19 is aligned with the center line of the cylinder 17 in the vertical direction. The second flange positioning body 27 moves vertically, and the upper and lower surfaces of the second flange 19 always remain horizontal. The adjusting screw drives the left adjusting rubber block 33 and the right adjusting rubber block 34 to move left and right, and at the same time, the second flange positioning body 27 will also move left and right until the second flange 19 is aligned with the center line of the cylinder 17 in the horizontal direction.

[0080] Along with the above process, the adjusting screw 36 needs to be manually adjusted at any time to slowly press the second flange 19 into the cylinder 17. Since the pressure of the adjusting screw 36 is limited, the pressing depth is limited. This process is mainly to ensure that the workpiece will not be damaged during the initial pressing of the second flange 19 through the introduction angle on the second flange 19. The adjustment and pressing process can also directly use the cylinder 22, but the electrical and hydraulic control accuracy requirements are relatively high. The left-side adjusting rubber block 33, the right-side adjusting rubber block 34 and the vertical adjusting rubber block 35 ensure that the second flange 19 can be adaptively adjusted slightly in the vertical and horizontal directions during the pressing process, without generating large stress constraints to damage the workpiece, and at the same time, it can also ensure that the upper and lower surfaces of the second flange 19 are always kept level.

[0081] Continue to start the oil cylinder to move leftward to press the second flange 19 into the cylinder 17 until the left end surface of the second flange 19 fits with the right end surface outside the cylinder 17. At this time, the second flange 19 and the cylinder 17 are assembled.

[0082] Loosen the left adjusting rubber block 33, the right adjusting rubber block 34, and the cylinder pressing rubber block 32.

[0083] The cylinder moves to the right and drives the corresponding components back to their initial positions.

[0084] Loosen the clamping screws on the gantry walking body 6, and slightly loosen all the screws on the first flange rotating body 10. The above steps are to remove the stress that may be generated on the workpiece as much as possible.

[0085] The rotating plunger 14 is installed.

[0086] The first cylinder 15 and the second cylinder 16 drive the first horizontal body 4 and the second horizontal body 7 to move downward until the first horizontal body 4 and the second horizontal body 7 are at the lower limit position, thereby ensuring that the first flange rotating body 10 can rotate arbitrarily.

[0087] The reducer is started to drive the traction rod to rotate for welding.

[0088] Example 3

[0089] A press-fit rotating device for a locomotive traction rod, wherein both ends of a cylinder 17 are clearance-matched with a first flange 11 and a second flange 19, such as Figure 7-9 shown.

[0090] On the basis of Example 1, the flange second rotating assembly (including the second flange rotating body 24, the sliding press body 26, the second flange positioning body 27, the cylindrical press column 28, the adjustment screw 36, the left adjusting rubber block 33, the right adjusting rubber block 34, the vertical adjusting rubber block 35, and the slide assembly 25) is removed from the turntable 21, and the flange second rotating body 37 is installed on the turntable 21.

[0091] The main function of the oil cylinder 22 in this scheme is to directly apply a large tonnage longitudinal force to the second flange 19 under clearance fit, indirectly generate static friction between the contact surface of the cylinder 17 and the flange, and then generate torque in the rotation direction. The contact surface between the cylinder 17 and the flange can be specially treated to increase the corresponding static sliding friction coefficient. The torque generated by the oil cylinder 22 on the first slewing bearing 9 and the second slewing bearing 20 is very small, because the rolling friction coefficient is about 0.001-0.0015, and the sliding friction coefficient is generally above 0.1, and the sliding friction can be ignored. The static friction torque generated by the above principle can drive the three components of the traction rod to rotate simultaneously without causing a change in relative position. The entire torque transmission process is as follows: the torque generated by the reducer 22 is transmitted to the first flange 11 through the first coupling 12, the rotating rod 14, the first shaft 13, and the first flange rotating body 10, and the first flange 11 is then transmitted to the cylinder 17 through the static friction torque, and the cylinder 17 is then transmitted to the second flange 19 through the static friction torque, and the second flange 19 is then transmitted to the cylinder 22, the flange second rotating body 37 and the second slewing bearing 20.

[0092] Example 4

[0093] Based on Example 3, the present invention also provides a locomotive traction rod assembly welding process.

[0094] The assembly of the flanges at both ends and the middle cylinder all adopts clearance fit, the cylinder pressure is 10 tons, the static friction coefficient is 0.1, the static friction torque is about 550NM, and the rolling friction torque is about 47NM.

[0095] The first horizontal body 4 and the second horizontal body 7 are at the lower limit position, ensuring that the first flange rotating body 10 and the second flange rotating body (12) can rotate arbitrarily.

[0096] The oil cylinder 22 moves to the right and is in the initial position.

[0097] The first cylinder 15 and the second cylinder 16 drive the first horizontal body 4 and the second horizontal body 7 to move upward until the upper ends of the first horizontal body 4 and the second horizontal body 7 are in contact with the lower ends of the first flange rotating body 10 and the second flange rotating body 37. Figure 7 Horizontal position shown in .

[0098] The first flange 11 is installed in the first flange rotating body 10, the cylinder 17 is installed on the cylindrical support body 5, and the second flange 19 is installed in the second flange rotating body 24. The cylinder 22 moves to the left to press the second flange 19, the cylinder 17 and the first flange 11 in sequence.

[0099] The first cylinder 15 and the second cylinder 16 drive the first horizontal body 4 and the second horizontal body 7 to move downward to the lower limit position.

[0100] The rotating plunger 14 is installed.

[0101] The reducer is started to drive the traction rod to rotate and weld.

[0102] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A press-fit rotating device for a locomotive traction rod, characterized in that: include: The platform (1) comprises a reducer (2), a first support seat (3), a first horizontal body (4), a cylindrical support body (5), a gantry walking body (6), a second horizontal body (7) and a second support seat (8) arranged in sequence from left to right. A first slewing bearing (9) is arranged in the first support seat (3). The first slewing bearing (9) is connected to a first flange rotating body (10). A first flange (11) is arranged in the first flange rotating body (10). The reducer (2) is connected to a first coupling (12). The first coupling (12) is connected to a first flange rotating body (10). The first coupling (12) is connected to one end of a first shaft (13); the other end of the first shaft (13) is inserted into a first flange rotating body (10); a rotating plug rod (14) is vertically arranged on the first coupling (12); the first horizontal body (4) is connected to a first cylinder (15) arranged in the platform (1); the second horizontal body (7) is connected to a second cylinder (16) arranged in the platform (1); a roller (18) is arranged on the cylindrical support body (5) for placing the cylindrical body (17) and rolling with the cylindrical body (17); The two ends of the cylinder (17) are respectively connected to the first flange (11) and the second flange (19); the gantry walking body (6) moves along the longitudinal direction of the platform (1); a second slewing bearing (20) is arranged in the second support seat (8); the second slewing bearing (20) is connected to a slewing plate (21); the slewing plate (21) is connected to an oil cylinder (22); a slewing joint body (23) is arranged on the oil cylinder (22); the slewing plate (21) is connected to a second flange slewing body (24); the second flange slewing body (2 4) is provided with a slideway assembly (25), a sliding press-fitting body (26) movable in a horizontal longitudinal direction is provided above the slideway assembly (25), the sliding press-fitting body (26) is connected to the rotary joint body (23) by bolts, a second flange positioning body (27) is inserted into the sliding press-fitting body (26), a second flange (19) and a cylinder press-fitting column (28) are provided in the second flange positioning body (27), and an adjusting screw (36) is provided on the second flange positioning body (27) and connected to the cylinder press-fitting column (28); The first cylinder (15) and the second cylinder (16) drive the first horizontal body (4) and the second horizontal body (7) to move up and down in the vertical direction. When rotating, the first horizontal body (4) and the second horizontal body (7) are at the lower limit position. When not rotating, the uppermost ends of the first horizontal body (4) and the second horizontal body (7) are in contact with the lowermost ends of the first flange rotating body (10) and the second flange rotating body (24).

2. The press-fit rotating device for a locomotive traction rod according to claim 1, characterized in that: The rotating insert rod (14) is a detachable structure.

3. The press-fit rotating device for a locomotive traction rod according to claim 1, characterized in that: The first flange rotating body (10) is provided with a vertical clamping screw (29), a left adjustment screw (30) and a right adjustment screw (31) for adjusting the flange position.

4. The press-fit rotating device for a locomotive traction rod according to claim 1, characterized in that: The roller (18) is provided with rubber for buffering, and a cylindrical pressing rubber block (32) is provided inside the gantry walking body (6).

5. The press-fit rotating device for a locomotive traction rod according to claim 1, characterized in that: The sliding press-fit body (26) is provided with a left-side adjusting rubber block (33), a right-side adjusting rubber block (34) and a vertical adjusting rubber block (35).

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