Multifunctional drill jig and riveting method for air spring mounting seat and pillow beam

Abstract

The application discloses a multifunctional drill jig and riveting method for air spring mounting seat and a pillow beam, relates to the field of rail transit technology, and the riveting method comprises the following steps: placing the air spring mounting seat near the mounting position of the pillow beam; sleeving the multifunctional mounting drill jig plate on the air spring mounting seat, adjusting the multifunctional mounting drill jig plate according to the mounting position, and making the air spring mounting seat be in the mounting position; fixing the multifunctional mounting drill jig plate, and making the air spring mounting seat be fixed in the mounting position; using a drilling device to sequentially penetrate the air spring mounting seat and the pillow beam; using a rivet pulling device to sequentially insert rivets into the holes penetrating the air spring mounting seat and the pillow beam, and riveting the air spring mounting seat and the pillow beam. The multifunctional drill jig and the drilling device are used in cooperation, accurate positioning and efficient hole drilling of the air spring mounting seat and the pillow beam are realized, and the problems of unstable hole drilling accuracy and low efficiency caused by manual drilling in the prior art are effectively solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of rail transit, in particular to a multifunctional drill jig for the installation of air spring seats on a bolster beam and a riveting method. BACKGROUND

[0002] In modern industrial manufacturing, especially in the field of rail transit, the chassis structure of a vehicle needs to be connected by riveting technology. For example, the connection between the chassis bolster beam and the air spring seat of a maglev train is an important part of the vehicle structure. Riveting technology is widely used due to its reliable connection strength and good sealing performance. During the riveting process, the components need to be accurately positioned and fixed, and then the drilling and riveting operations are performed. This process has strict requirements on the accuracy and efficiency of the process to ensure the quality and performance of the final product.

[0003] In the existing riveting process, the connection between the chassis bolster beam and the air spring seat is usually achieved by manual drilling. Since the thickness of the bolster beam is 8mm and the thickness of the air spring seat is 17mm, there are certain technical challenges in the drilling process of this combined stack. Manual drilling is not only inefficient, but also easily affected by the skill level of the operator, resulting in unstable drilling accuracy. In addition, the aluminum chips generated during the drilling process are difficult to clean up, which may adversely affect the quality of subsequent riveting and equipment maintenance. SUMMARY

[0004] The purpose of the present application is to provide a riveting method for the installation of air spring seats on a bolster beam, which utilizes the synergistic effect of a multifunctional installation drill jig and a drilling device to achieve accurate positioning and efficient drilling of the air spring seat on the bolster beam, effectively solving the problems of unstable drilling accuracy and low efficiency caused by manual drilling in the prior art. Another purpose of the present application is to provide a multifunctional drill jig for the installation of air spring seats on a bolster beam.

[0005] To achieve the above-mentioned purposes, the present application provides a riveting method for the installation of air spring seats on a bolster beam, comprising:

[0006] placing the air spring seat near the installation position of the bolster beam;

[0007] sleeving a multifunctional installation drill jig on the air spring seat, adjusting the multifunctional installation drill jig according to the installation position, so that the air spring seat is in the installation position;

[0008] fixing the multifunctional installation drill jig so that the air spring seat is fixed in the installation position;

[0009] using a drilling device to sequentially penetrate the air spring seat and the bolster beam;

[0010] Using the rivet setting device, the rivets are inserted into the holes of the air spring mounting seat and the bolster beam in sequence, and the air spring mounting seat is riveted with the bolster beam.

[0011] In some embodiments, the step of fixing the multifunctional drilling jig template comprises:

[0012] The multifunctional drilling jig template is fixed by using a combination of a sleeve expansion fixing device and a C-shaped clamp device, the C-shaped clamp device is arranged at the edge position of the bolster beam, and the sleeve expansion fixing device is arranged at the position away from the edge of the bolster beam.

[0013] In some embodiments, the step of using the sleeve expansion fixing device comprises:

[0014] The sleeve of the sleeve expansion fixing device is placed into the lightening hole of the bolster beam, the sleeve is expanded in the lightening hole, and a fixing force point is provided for the sleeve expansion fixing device;

[0015] The first and second pressure heads of the sleeve expansion fixing device are adjusted, the first pressure head is pressed against the multifunctional drilling jig template, and the second pressure head is pressed against the bolster beam.

[0016] In some embodiments, the drilling device is an ADU drill, and the steps of using the ADU drill comprise:

[0017] The self-expanding drill jig is placed into the guide hole of the multifunctional drilling jig template;

[0018] The ADU drill is inserted into the self-expanding drill jig;

[0019] The ADU drill is controlled to perform hole making, the rotation speed and feed amount of the drill bit of the ADU drill during hole making are automatically controlled by the ADU drill, and the generated drill chips are recycled by the ADU drill.

[0020] In some embodiments, when using the rivet setting device, the rivets are set in the order from inside to outside and symmetrically staggered.

[0021] The application also provides a multifunctional drill jig for an air spring mounting seat and a bolster beam, which is suitable for the riveting method for the air spring mounting seat and the bolster beam, and comprises a multifunctional drilling jig template, the multifunctional drilling jig template is provided with a positioning structure for nested cooperation with the air spring mounting seat, and the multifunctional drilling jig template is also provided with a guide hole for providing guidance for a drilling device and a rivet setting device.

[0022] In some embodiments, the positioning structure comprises a positioning hole for inserting a protruding structure of the air spring mounting seat.

[0023] In some embodiments, the convex structure includes a first convex structure located in the middle region of the air spring mounting seat and a second convex structure located in the corner region of the air spring mounting seat, the number of the first convex structure is two, and the number of the second convex structure is four.

[0024] In some embodiments, a C-shaped clamp device and a sleeve fixing device are further included, the middle part of the sleeve fixing device is provided with a sleeve, and the two ends are provided with a first pressure head and a second pressure head.

[0025] In some embodiments, the sleeve includes a first body and a second body, the first body is provided with a tapered hole, the second body is provided with a tapered surface, the first body is sleeved on the second body, and the first body is expanded under the action of the second body by adjusting the axial position of the first body and the second body.

[0026] With respect to the above background technology, the riveting method for the air spring mounting seat and the pillow beam provided by the present application mainly includes the following steps: S1, placing the air spring mounting seat near the installation position of the pillow beam; S2, sleeving a multifunctional installation drill template on the air spring mounting seat, adjusting the multifunctional installation drill template according to the installation position, and making the air spring mounting seat be in the installation position; S3, fixing the multifunctional installation drill template, and making the air spring mounting seat be fixed in the installation position; S4, using a drilling device to sequentially penetrate the air spring mounting seat and the pillow beam; S5, using a rivet pulling device to sequentially insert rivets into the holes penetrating the air spring mounting seat and the pillow beam, and riveting the air spring mounting seat and the pillow beam.

[0027] In the traditional riveting process, the connection between the air spring mounting seat and the pillow beam usually relies on manual drilling. This method has many defects: first, manual operation is difficult to ensure the positioning accuracy every time, which leads to the deviation of the position of the air spring mounting seat on the pillow beam, and further affects the accuracy of hole making; second, the efficiency of manual drilling is relatively low, which is difficult to meet the needs of large-scale production, and the skill level of the operator is relatively high, which increases the labor cost and the operation difficulty.

[0028] In view of these defects, the present application provides an innovative riveting method. First, the air spring mounting seat is placed near the installation position of the pillow beam, which lays the foundation for subsequent accurate positioning and fixing. Then, a multifunctional installation drill template is sleeved on the air spring mounting seat, and the design of this template is crucial. It can be flexibly adjusted according to the installation position to ensure that the air spring mounting seat is accurately in the predetermined installation position. This adjustment function greatly improves the positioning accuracy and reduces the errors caused by manual visual inspection or manual adjustment.

[0029] Next, fix the multifunctional installation drill template to stabilize the air spring mounting seat in the installation position. This step further enhances the stability of the air spring mounting seat through the fixing effect of the template, preventing displacement or misalignment during subsequent drilling and riveting processes, thereby ensuring the smooth progress of the entire riveting process.

[0030] The most critical step is to use the drilling equipment to make holes. Under the guidance and positioning of the multifunctional installation drill template, the drilling equipment can accurately penetrate the air spring mounting seat and the bolster beam in sequence to make holes that meet the riveting requirements. Due to the precise positioning and fixing effect of the template, the drilling accuracy of the drilling equipment is significantly improved, avoiding problems such as hole position deviation and inconsistent hole diameter that may occur during manual drilling, ensuring the quality and consistency of the riveting holes.

[0031] Finally, use the rivet installation equipment to insert the rivets into the penetrated holes in sequence to complete the riveting.

[0032] In combination with the above structure and process description, it can be seen that the riveting method for the air spring mounting seat and the bolster beam has at least the following beneficial effects: the riveting method for the air spring mounting seat and the bolster beam utilizes the synergistic effect of the multifunctional installation drill template and the drilling equipment to achieve precise positioning and efficient hole making of the air spring mounting seat and the bolster beam, effectively solving the problems of unstable drilling accuracy and low efficiency caused by manual drilling in the prior art. BRIEF DESCRIPTION OF DRAWINGS

[0033] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description. Obviously, the drawings in the following description are only embodiments of the present application, and those skilled in the art can obtain other drawings according to the provided drawings without creating any creative labor.

[0034] Figure 1 Flowchart of the riveting method for the air spring mounting seat and the bolster beam provided by the embodiment of the present application;

[0035] Figure 2 Schematic diagram of the riveting method for the air spring mounting seat and the bolster beam provided by the embodiment of the present application Figure 1 ;

[0036] Figure 3 Schematic diagram of the riveting method for the air spring mounting seat and the bolster beam provided by the embodiment of the present application Figure 2 ;

[0037] Figure 4 Schematic diagram of the riveting method for the air spring mounting seat and the bolster beam provided by the embodiment of the present application Figure 3 ;

[0038] Figure 5 The riveting method for air spring mounting seat and pillow beam provided by the embodiment of the present application Figure 4 ;

[0039] Figure 6 The riveting method for air spring mounting seat and pillow beam provided by the embodiment of the present application Figure 5 ;

[0040] Figure 7 The riveting sequence diagram provided by the embodiment of the present application

[0041] Figure 8 The schematic diagram of the expansion sleeve fixing device provided by the embodiment of the present application

[0042] Figure 9 The schematic diagram of the multifunctional installation drill template provided by the embodiment of the present application

[0043] Figure 10 The schematic diagram of the first main body provided by the embodiment of the present application

[0044] Figure 11 The schematic diagram of the second main body provided by the embodiment of the present application

[0045] Figure 12 The structural diagram of the air spring mounting seat and pillow beam provided by the embodiment of the present application

[0046] Figure 13 The position diagram of the air spring mounting seat and pillow beam provided by the embodiment of the present application

[0047] Wherein:

[0048] Air spring mounting seat 1, first protrusion 11, second protrusion 12, pillow beam 2, multifunctional installation drill template 3, drilling equipment 4, self-expanding drill jig 41, ADU drill 42, rivet 5, expansion sleeve fixing device 6, expansion sleeve 61, first pressure head 62, second pressure head 63, C-shaped clamp device 7, guide hole 31, positioning hole 32. DETAILED DESCRIPTION

[0049] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0050] In order to enable those skilled in the art to better understand the present application, the present application will be further described in detail below with reference to the drawings and specific embodiments.

[0051] Please refer toFigures 1 to 6 wherein, Figure 1 the flow chart of the riveting method for the air spring mounting seat and the bolster provided by the embodiment of the present application, Figure 2 the schematic diagram of the riveting method for the air spring mounting seat and the bolster provided by the embodiment of the present application Figure 1 , Figure 3 the schematic diagram of the riveting method for the air spring mounting seat and the bolster provided by the embodiment of the present application Figure 2 , Figure 4 the schematic diagram of the riveting method for the air spring mounting seat and the bolster provided by the embodiment of the present application Figure 3 , Figure 5 the schematic diagram of the riveting method for the air spring mounting seat and the bolster provided by the embodiment of the present application Figure 4 , Figure 6 the schematic diagram of the riveting method for the air spring mounting seat and the bolster provided by the embodiment of the present application Figure 5 .

[0052] In the first specific embodiment, the riveting method for the air spring mounting seat 1 and the bolster 2 provided by the embodiment of the present application mainly comprises: S1, placing the air spring mounting seat 1 near the installation position of the bolster 2; S2, sleeving the multifunctional installation drill template 3 on the air spring mounting seat 1, adjusting the multifunctional installation drill template 3 according to the installation position, so that the air spring mounting seat 1 is at the installation position; S3, fixing the multifunctional installation drill template 3, so that the air spring mounting seat 1 is fixed at the installation position; S4, using the drilling equipment 4 to sequentially penetrate the air spring mounting seat 1 and the bolster 2; S5, using the rivet pulling equipment to sequentially insert the rivet 5 into the holes penetrating the air spring mounting seat 1 and the bolster 2, and riveting the air spring mounting seat 1 and the bolster 2.

[0053] In the traditional riveting process, the connection between the air spring mounting seat 1 and the bolster 2 usually relies on manual drilling. This method has many defects: first, manual operation cannot guarantee the positioning accuracy every time, which leads to the deviation of the position of the air spring mounting seat 1 on the bolster 2, and further affects the accuracy of hole making; second, the efficiency of manual drilling is relatively low, which is difficult to meet the needs of large-scale production, and the skill level of the operator is relatively high, which increases the labor cost and the operation difficulty.

[0054] In view of these defects, the present application provides an innovative riveting method. First, the air spring mounting seat 1 is placed near the installation position of the bolster 2, which lays the foundation for subsequent accurate positioning and fixing. Then, the multifunctional installation drill template 3 is sleeved on the air spring mounting seat 1, and the design of this template is crucial. It can be flexibly adjusted according to the installation position, and the installation position is determined according to the size measured according to the installation requirements, to ensure that the air spring mounting seat 1 is accurately at the predetermined installation position. This adjustment function greatly improves the positioning accuracy and reduces the error caused by manual visual inspection or manual adjustment.

[0055] Next, the multifunctional installation drilling template 3 is fixed to stabilize the air spring mounting seat 1 in the installation position. This step further enhances the stability of the air spring mounting seat 1 through the fixing effect of the template, preventing displacement or misalignment during subsequent drilling and riveting processes, thereby ensuring the smooth progress of the entire riveting process.

[0056] The most critical step is to use the drilling equipment 4 to make holes. Under the guidance and positioning of the multifunctional installation drilling template 3, the drilling equipment 4 can accurately penetrate the air spring mounting seat 1 and the bolster 2 in turn to make holes that meet the riveting requirements. Due to the precise positioning and fixing effect of the template, the drilling accuracy of the drilling equipment 4 is significantly improved, avoiding problems such as hole position deviation and inconsistent hole diameter that may occur during manual drilling, ensuring the quality and consistency of the riveting holes.

[0057] Finally, the rivets 5 are inserted into the penetrated holes using the riveting equipment, completing the riveting.

[0058] In combination with the above structure and process description, it can be seen that the riveting method for the air spring mounting seat 1 and the bolster 2 has at least the following beneficial effects: the riveting method for the air spring mounting seat 1 and the bolster 2 utilizes the synergistic effect of the multifunctional installation drilling template 3 and the drilling equipment 4 to achieve precise positioning and efficient hole making of the air spring mounting seat 1 and the bolster 2, effectively solving the problems of unstable drilling accuracy and low efficiency caused by manual drilling in the prior art.

[0059] In some embodiments, the step of fixing the multifunctional installation drilling template 3 includes using a combination of the expansion sleeve fixing device 6 and the C-shaped clamping device 7 to fix the multifunctional installation drilling template 3. The C-shaped clamping device 7 is arranged at the edge position of the bolster 2, and the expansion sleeve fixing device 6 is arranged at the position away from the edge of the bolster 2.

[0060] In this embodiment, in order to ensure the stable fixation of the multifunctional installation drilling template 3 on the bolster 2, a combined fixation method of the expansion sleeve fixing device 6 and the C-shaped clamping device 7 is adopted.

[0061] The C-shaped clamping device 7 is arranged at the edge position of the bolster 2, and its clamping structure can effectively press and fix the edge part of the multifunctional installation drilling template 3. Due to the relatively small space at the edge position, the compact design of the C-shaped clamping device 7 enables it to adapt to this environment, ensuring the stability of the template in the edge area by applying pressure. The expansion sleeve fixing device 6 is arranged at the position away from the edge of the bolster 2, where the space is relatively large and it is not convenient to use the C-shaped clamping device 7 for clamping. The expansion sleeve fixing device 6 is fixed by expanding on the bolster 2, providing a stable support point for the multifunctional installation drilling template 3, and then effectively pressing and fixing the multifunctional installation drilling template 3.

[0062] The combination fixing mode makes the fixing of the multifunctional installation drilling template 3 on the sleeper 2 more firm and reliable, is suitable for fixing requirements in different positions, and improves the stability and reliability of the entire riveting process.

[0063] It should be noted that the way of fixing the multifunctional installation drilling template 3 has high flexibility and adaptability, and is not limited to the number and combination form of the expansion sleeve fixing device 6 and the C-shaped clamp device 7. According to the actual riveting requirements and the specific structure of the sleeper 2, different fixing point layouts can be selected to achieve the best fixing effect. For example, a three-point fixing mode can be used, that is, two C-shaped clamp devices 7 are used for compression fixing at the edge position of the sleeper 2, and one expansion sleeve fixing device 6 is used for expansion fixing at a position away from the edge, or one C-shaped clamp device 7 and two expansion sleeve fixing devices 6 are used, which can form a stable triangular support structure to ensure the stable fixing of the multifunctional installation drilling template 3 on the sleeper 2. Similarly, a four-corner fixing mode can also be used, that is, one C-shaped clamp device 7 or expansion sleeve fixing device 6 is arranged at each corner position of the sleeper 2, and the appropriate device type is selected according to the specific space conditions and fixing requirements of each corner to realize the all-around fixing of the multifunctional installation drilling template 3. This flexible fixing mode makes the riveting method adaptable to various riveting scenes and sleeper structures, improving its applicability and practicality.

[0064] Please refer to Figure 8 , Figure 8 The expansion sleeve fixing device provided in the embodiments of the present application.

[0065] In some embodiments, the step of using the expansion sleeve fixing device 6 includes: placing the expansion sleeve 61 of the expansion sleeve fixing device 6 into the lightening hole of the sleeper 2, making the expansion sleeve 61 tight in the lightening hole, and providing a fixing force point for the expansion sleeve fixing device 6; adjusting the first pressure head 62 and the second pressure head 63 of the expansion sleeve fixing device 6, so that the first pressure head 62 compresses the multifunctional installation drilling template 3 and the second pressure head 63 compresses the sleeper 2.

[0066] In this embodiment, the steps of using the expansion sleeve fixing device 6 are as follows: First, the expansion sleeve 61 of the expansion sleeve fixing device 6 is placed into the relief hole of the bolster beam 2. The design of the relief hole allows the expansion sleeve 61 to enter and be positioned smoothly within it. Next, the expansion sleeve 61 is tightened in the relief hole by some means (such as rotation or applying pressure), so that the expansion sleeve 61 fits tightly against the inner wall of the bolster beam 2, thereby providing a stable fixing point for the expansion sleeve fixing device 6. With this fixing point, the expansion sleeve fixing device 6 can be stably installed on the bolster beam 2. Then, the first pressure head 62 and the second pressure head 63 of the expansion sleeve fixing device 6 are adjusted. These two pressure heads can be in the form of bolts. By screwing the first pressure head 62 (bolt), it is moved toward the multi-functional installation drill template 3 until the multi-functional installation drill template 3 is pressed, ensuring that the template will not shift or vibrate during the riveting process. At the same time, the second pressure head 63 (bolt) is screwed toward the bolster beam 2, pressing the bolster beam 2, further enhancing the connection stability between the expansion sleeve fixing device 6 and the bolster beam 2. Through these steps, the expansion sleeve fixing device 6 can effectively fix the multi-functional installation drill template 3 onto the pillow beam 2, providing reliable support for subsequent hole making and riveting operations.

[0067] Please refer to Figure 9 , Figure 9 This is a schematic diagram of a multifunctional installation drill template provided in an embodiment of this application.

[0068] In some embodiments, the drilling device 4 is an ADU drill 42, and the steps of use include: placing the self-expanding drill jig 41 into the guide hole 31 of the multi-functional mounting drill template 3; inserting the ADU drill 42 into the self-expanding drill jig 41; controlling the ADU drill 42 to make a hole, wherein the drill bit speed and feed rate of the ADU drill 42 are automatically controlled by the ADU drill 42 during the hole making process, and the drill chips generated are recovered by the ADU drill 42.

[0069] In this embodiment, the drilling device 4 uses an ADU drill 42, and its usage steps are as follows: First, the self-expanding drill jig 41 is accurately placed into the guide hole 31 of the multi-functional mounting drill template 3 to ensure precise drilling guidance. Next, the ADU drill 42 is inserted into the self-expanding drill jig 41, ready for the hole-making operation. During the hole-making process, the ADU drill 42 can automatically control the drill bit's rotation speed and feed rate. By precisely controlling the feed elongation, it effectively avoids damage to the carbon fiber flooring under the bolster beam 2 during hole-making. Simultaneously, the ADU drill 42 has a dust-collecting function, which can recover the drill chips generated during drilling, preventing drill chips from remaining in the enclosed cavity and keeping the riveting area clean. This process not only improves the accuracy and efficiency of hole-making but also ensures the stability and reliability of the riveting quality.

[0070] Please refer to Figure 7 , Figure 7A riveting sequence diagram provided by the embodiment of the present application.

[0071] In some embodiments, when using the riveting equipment, the riveting is performed in an order of inside to outside and symmetrically staggered.

[0072] In the embodiment, when riveting operation is performed using the riveting equipment, a specific riveting sequence is adopted, that is, riveting is performed in an order of inside to outside and symmetrically staggered. The arrangement of such sequence has its unique advantages and considerations. First, riveting is started from the inside, which can ensure the stability of the riveting process, because the riveting points inside can provide certain support and positioning for subsequent riveting of the outside, avoiding deformation or displacement of the internal structure due to the fixation of the external riveting points during the riveting process. Secondly, the symmetrically staggered riveting sequence helps to balance the stress generated during the riveting process, preventing structural damage caused by stress concentration. Through this ordered riveting method, the riveting quality can be improved, ensuring that the connection between the air spring mounting seat and the bolster beam is more firm and reliable, thereby improving the stability and durability of the entire riveting structure.

[0073] Specifically as Figure 7 shown:

[0074] First step, riveting the C1 inner ring area, the riveting sequence is 1-2-3-4-5;

[0075] Second step, riveting the C2 inner ring area, the riveting sequence is 6-7-8-9-10-11-12;

[0076] Third step, riveting the C3 middle ring area, the riveting sequence is 13-14-15-16-17-18-19-20;

[0077] Fourth step, riveting the C4 middle ring area, the riveting sequence is 21-22-23-24;

[0078] Fifth step, riveting the C5 outer ring area, the riveting sequence is 25-26-27-28.

[0079] In a specific embodiment, the present application also provides a multifunctional drill jig for the air spring mounting seat 1 and the bolster beam 2, which is suitable for the riveting method for the air spring mounting seat 1 and the bolster beam 2 described above, and includes a multifunctional mounting drill jig plate 3. The multifunctional mounting drill jig plate 3 is provided with a positioning structure for nested cooperation with the air spring mounting seat 1, and is also provided with a guide hole 31 for providing guidance for the drilling equipment 4 and the riveting equipment.

[0080] In this embodiment, this application also provides a multifunctional drilling jig specifically for riveting the air spring mounting seat 1 and the bolster beam 2. The multifunctional drilling jig includes a multifunctional mounting drill template 3, designed for compatibility and synergy with the riveting method. The multifunctional mounting drill template 3 is equipped with a positioning structure that can nest with the air spring mounting seat 1, ensuring precise positioning of the air spring mounting seat 1 during riveting and preventing displacement or tilting, thereby improving riveting accuracy. Furthermore, the multifunctional mounting drill template 3 is also equipped with guide holes 31, which provide precise guidance for the drilling equipment 4 and the riveting equipment. During hole making and riveting operations, the equipment can be positioned and operated along the guide holes 31, ensuring the accuracy of the hole position and the quality of the riveting, making the entire riveting process more efficient and reliable. Through this multifunctional drilling jig design, the efficiency and quality of riveting the air spring mounting seat 1 and the bolster beam 2 can be further improved, meeting the requirements of high-precision riveting.

[0081] In some embodiments, the positioning structure includes a positioning hole 32 for inserting a protruding structure of the air spring mounting seat 1.

[0082] In this embodiment, the positioning structure includes positioning holes 32, which are provided on the multifunctional mounting drill template 3 and are used to mate with the protruding structure of the air spring mounting seat 1. When the multifunctional mounting drill template 3 is fitted onto the air spring mounting seat 1, the protruding structure of the air spring mounting seat 1 can be accurately inserted into the positioning holes 32. This design allows the multifunctional mounting drill template 3 to be precisely positioned on the air spring mounting seat 1, ensuring the stability and accuracy of the template during riveting. Through the cooperation between the positioning holes 32 and the protruding structure, the multifunctional mounting drill template 3 is effectively prevented from moving or rotating on the air spring mounting seat 1, thereby improving the accuracy of the riveting hole positions and the consistency of the riveting quality.

[0083] In some embodiments, the protrusion structure includes a first protrusion 11 located in the central region of the air spring mounting base 1 and a second protrusion 12 located in the four corner regions of the air spring mounting base 1, wherein there are two first protrusions 11 and four second protrusions 12.

[0084] In this embodiment, these protruding structures are mainly used for the installation of the air spring, but the multi-functional mounting drill template 3 is provided with matching positioning holes 32. When the multi-functional mounting drill template 3 is fitted onto the air spring mounting base 1, the positioning holes 32 can cooperate with these protruding structures to achieve precise positioning and stable fixation of the template. This design ensures that during the riveting process, the multi-functional mounting drill template 3 can accurately cover the air spring mounting base 1, providing reliable guidance and support for drilling and riveting operations.

[0085] In some embodiments, the C-shaped caliper device 7 and the expansion sleeve fixing device 6 are also included. The expansion sleeve fixing device 6 is provided with an expansion sleeve 61 in the middle part and first and second pressure heads 62 and 63 at both ends.

[0086] In this embodiment, the multifunctional drill jig also includes a C-shaped caliper device 7 and an expansion sleeve fixing device 6. In the structural design of the expansion sleeve fixing device 6, an expansion sleeve 61 is provided in the middle part, which is a key component for achieving the fixing function, providing a stable support point by tightening in the lightening hole of the sleeper 2. The expansion sleeve fixing device 6 is provided with first and second pressure heads 62 and 63 at both ends, respectively. The two pressure heads serve to further enhance the fixing effect. The first and second pressure heads 62 and 63 can be adjusted by screwing or other means to press the multifunctional drill jig plate 3 and the sleeper 2, ensuring the stable connection of the jig plate and the sleeper during the riveting process. This design makes the multifunctional drill jig more firmly fixed on the sleeper 2, providing a solid guarantee for hole making and riveting operations.

[0087] Please refer to Figure 10 and Figure 11 , Figure 10 the schematic diagram of the first body provided in the embodiments of the present application, Figure 11 the schematic diagram of the second body provided in the embodiments of the present application.

[0088] In some embodiments, the expansion sleeve 61 includes a first body and a second body, the first body is provided with a tapered hole, and the second body is provided with a tapered surface. The first body is sleeved on the second body, and the first body is expanded under the action of the second body by adjusting the axial position of the first body and the second body.

[0089] In this embodiment, the expansion sleeve 61 is composed of a first body and a second body, and the relative movement between them realizes the expansion function. The first body is provided with a tapered hole inside, and the second body is provided with a tapered surface. They can be sleeved on each other, and the expansion sleeve 61 is expanded by adjusting the axial position between them. In specific operation, the first body can be fixed and the second body can move along the tapered surface, or the second body can be fixed and the first body can move, as long as the relative axial displacement between the two occurs. In order to realize this relative movement, through holes can be provided on the first body and the second body, and fasteners such as bolts are passed through these through holes. When the bolt is screwed, the pushing force or pulling force of the fastener promotes the relative movement of the first body and the second body. With the occurrence of relative movement, the first body is gradually expanded under the action of the tapered surface of the second body, tightly fitting the inner wall of the lightening hole of the sleeper 2, thereby providing a stable and reliable fixing force point for the expansion sleeve fixing device 6, ensuring the firm fixation of the multifunctional drill jig plate 3 during the riveting process. This design cleverly uses the principle of relative motion, simplifies the operation process of the expansion sleeve 61, and improves the stability of the fixing effect.

[0090] Please refer toFigure 12 , Figure 12 The structural diagram of the air spring mounting seat and the bolster provided by the embodiment of the present application.

[0091] As shown in Figure 12 , the bolster 2 and the air spring mounting seat 1 are sequentially arranged on the carbon fiber floor, the bolster 2 is fixed with the carbon fiber floor through rivets, and the air spring mounting seat 1 is fixed with the bolster 2 through rivets.

[0092] Please refer to Figure 13 , Figure 13 The position diagram of the air spring mounting seat and the bolster provided by the embodiment of the present application.

[0093] Specifically, the air spring mounting seat 1 and the bolster 2 are related to the suspension frame connecting piece group. The bolster 2 and 16 air spring mounting seats 1 are connected through BOM-R12 rivets to form an AL / AL riveted joint, and every four air spring mounting seats 1 form a group for implementing the installation of air springs. Each air spring mounting seat 1 has 28 riveting holes, and 16 air spring mounting seats 1 have a total of 448 riveting points. The riveting position of the air spring mounting seat 1 has a base hole with a diameter of φ8mm before the air spring mounting seat 1 and the bolster 2 are riveted. After the air spring mounting seat 1 and the bolster 2 are riveted, the internal part of the two components is formed into a closed cavity after the combined assembly is completed.

[0094] In view of the problems in the prior art, such as the large overall size of the chassis and the lack of reliable force points, which leads to the difficulty of fixing the air spring mounting seat on the bolster, and the air spring mounting seat is prone to misalignment, thereby affecting the subsequent hole drilling accuracy; when the 17mm and 8mm aluminum alloy combined laminates are manually drilled, the hole drilling accuracy is difficult to guarantee, and a large drilling axial force is generated during the hole drilling process, which is easy to damage the carbon fiber floor at the bottom of the closed cavity in the last stage of the hole drilling process; in addition, the aluminum chips generated during the hole drilling process are easy to remain in the closed cavity and are difficult to clean. In order to solve these problems, the present application provides a multifunctional drill jig and a riveting method for positioning, restraining, drilling and riveting of composite parts. The method is specially used for the fixing and riveting of the air spring mounting seat and the bolster of the magnetic levitation narrow vehicle body, realizes the integrated operation of the fixing, drilling and riveting of the air spring mounting seat 1, not only simplifies the work process, but also significantly improves the installation efficiency and the riveting quality, and effectively overcomes the defects in the prior art.

[0095] It should be noted that many components mentioned in the present application are general standard components or components known to those skilled in the art, and their structure and principle can be known by the technical personnel through the technical manual or through the conventional experimental method.

[0096] It should be noted that the relational terms herein, such as first and second, are used solely to distinguish one from another entity without necessarily implying any actual relationship or order between such entities.

[0097] The above describes in detail the multifunctional drill jig and riveting method for air spring mounting seat and pillow beam provided by the present application. The principles and implementation manners of the present application are described by applying specific examples in the present article, and the above example description is only used to help understand the method of the present application and its core idea. It should be pointed out that, for those skilled in the art, some improvements and modifications can be made to the present application without departing from the principles of the present application, and these improvements and modifications also fall within the protection scope of the claims of the present application.

Claims

1. A riveting method for connecting a spring mounting base and a bolster beam, characterized in that, include: Place the air spring mounting bracket near the installation position of the bolster beam; Place the multi-functional installation drill template onto the air spring mounting base, and adjust the multi-functional installation drill template according to the installation position so that the air spring mounting base is in the installation position; Fix the multifunctional mounting drill template so that the air spring mounting seat is fixed at the mounting position; Using drilling equipment, the hole is drilled through the air spring mounting seat and the pillow beam in sequence; Using a riveting device, rivets are inserted sequentially into the holes that pass through the air spring mounting base and the bolster beam to rivet the air spring mounting base and the bolster beam; The step of fixing the multifunctional installation drill template includes: The multi-functional installation drill template is fixed by a combination of an expansion sleeve fixing device and a C-type clamp device. The expansion sleeve fixing device has an expansion sleeve in the middle and a first pressure head and a second pressure head at both ends. The C-type clamp device is located at the edge of the bolster beam, and the expansion sleeve fixing device is located at the position away from the edge of the bolster beam. The steps for using the expansion sleeve fixing device include: The expansion sleeve of the expansion sleeve fixing device is inserted into the lightening hole of the bolster beam, so that the expansion sleeve is tightened in the lightening hole, providing a fixing force point for the expansion sleeve fixing device; Adjust the first and second pressure heads of the expansion sleeve fixing device so that the first pressure head presses against the multifunctional installation drill template and the second pressure head presses against the pillow beam.

2. The riveting method according to claim 1, characterized in that, The steps of using drilling equipment include: Place the self-expanding drill jig into the guide hole of the multifunctional mounting drill template; Insert the ADU drill into the self-expanding drill jig; The ADU drill is controlled to make holes. During the hole making process, the drill bit speed and feed rate of the ADU drill are automatically controlled by the ADU drill, and the drill chips generated are recovered by the ADU drill.

3. The riveting method according to claim 1, characterized in that, When using riveting equipment, riveting should be performed in a symmetrical and staggered manner from the inside out.

4. A multifunctional drilling jig for a spring mounting base and a bolster beam, applicable to the riveting method for a spring mounting base and a bolster beam as described in any one of claims 1 to 3, characterized in that, The device includes a multi-functional mounting drill template, which has a positioning structure for nesting with a spring mounting seat. The multi-functional mounting drill template also has a guide hole for guiding drilling equipment and riveting equipment. The positioning structure includes a positioning hole for inserting the protruding structure of the air spring mounting seat; The protrusion structure includes a first protrusion located in the central region of the air spring mounting base and a second protrusion located in the four corner regions of the air spring mounting base. There are two first protrusions and four second protrusions. It also includes a C-type clamp device and a sleeve fixing device, wherein the sleeve fixing device has a sleeve in the middle and a first pressure head and a second pressure head at both ends.

5. The multifunctional drill jig according to claim 4, characterized in that, The expansion sleeve includes a first body and a second body. The first body has a tapered hole, and the second body has a tapered surface. The first body is sleeved on the second body. By adjusting the axial position of the first body and the second body, the first body expands outward under the action of the second body.

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