Method for assembling a brake hanger to a side beam and use thereof

Abstract

The application discloses a kind of assembly method of brake suspension seat and side beam connection and its application, solve the problem that brake suspension seat and side beam connection are unreliable in prior art, with the beneficial effect of guaranteeing brake suspension seat assembly efficiency and quality, specific scheme is as follows: a kind of assembly method of brake suspension seat and side beam connection, including side beam installation is frame state, with frame as reference, the two end surface regions of side beam preassembly bottom hole are processed to eliminate the deviation existing between side beam vertical plane flatness and frame horizontal plane perpendicularity, after processing is completed, the size deviation of side beam preassembly bottom hole is revised by hole expansion processing to side beam preassembly bottom hole, form side beam assembly hole;Process part passes through part of side beam assembly hole, brake suspension seat assembly hole connects side beam with brake suspension seat;Bushing enters assembly final hole to realize bushing through side beam and assembly to brake suspension seat;Connecting piece is inserted into bushing and is screwed into brake suspension seat assembly hole, connect side beam with brake suspension seat;Remove process part.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of rail transit, in particular to a method for assembling a brake hanger and a side beam and application thereof. BACKGROUND

[0002] The statements in this section merely provide background information related to the present application and do not necessarily constitute the prior art.

[0003] At present, the side beams and brake hangers of most rail vehicles are made of carbon steel, and the assembly and connection method is welding. The welding method can ensure the reliable connection of the side beam and the brake hanger. After welding is completed, the deviation of the side beam is corrected. The side beams and brake hangers of some carbon fiber frames are made of composite materials. The assembly and connection method is to integrally process the assembly holes after pre-connection, assemble the connecting bushings, and then connect and fix them with double-end bolts.

[0004] The inventor found that the existing method for connecting the brake hanger and the side beam has the following two problems:

[0005] Because the assembly holes of the side beam are machined with the end of the side beam as the reference, and the connection of the side beam and the brake hanger needs to be referenced to the frame, the existing technology adjusts the size deviation of the side beam after the connection of the brake hanger and the side beam is completed. The adjustment method is relatively complex, which affects the assembly efficiency and quality of the brake hanger.

[0006] The brake hanger and the composite material side beam are provided with assembly holes. After the assembly holes of the side beam and the brake hanger are integrally machined, they are directly connected by double-end bolts. The assembly holes of the side beam are not corrected before machining, which cannot guarantee the smooth connection of the brake hanger and the side beam. After one-time machining, the connection cannot be successfully achieved, which requires multiple rework and machining. Therefore, the assembly efficiency and quality of the side beam and the brake hanger cannot be effectively guaranteed. SUMMARY

[0007] In view of the deficiencies of the prior art, the first object of the present application is to provide a method for assembling a brake hanger and a side beam, which can realize the smooth assembly of the brake hanger and the side beam, and guarantee the assembly efficiency and quality of the brake hanger.

[0008] The second object of the present application is to provide a method for assembling a brake hanger and a side beam, which can realize the reliable assembly of the composite material and / or the brake hanger and the composite material and / or the side beam.

[0009] In order to achieve the above objects, the present application is realized by the following technical solutions:

[0010] A method for assembling a brake hanger and a side beam, comprising:

[0011] After the side beam is installed in the frame state, the two end surface regions of the side beam pre-assembled bottom hole are processed to eliminate the deviation of the side beam vertical plane flatness and the frame horizontal plane perpendicularity, and after the processing is completed, the side beam pre-assembled bottom hole is expanded to correct the size deviation of the side beam pre-assembled bottom hole, and the side beam assembly hole is formed;

[0012] The process part passes through part of the side beam assembly hole and the brake hanger assembly hole to connect the side beam and the brake hanger;

[0013] The other side beam assembly hole and the corresponding brake hanger assembly hole are integrally processed to form a final assembly hole;

[0014] The bushing enters the final assembly hole to realize that the bushing passes through the side beam and is assembled to the brake hanger;

[0015] The connecting piece penetrates into the bushing and is screwed into the brake hanger assembly hole to connect the side beam and the brake hanger;

[0016] The process part is removed, and the side beam assembly hole and the brake hanger assembly hole where the process part is located are integrally processed to the final assembly hole, and the installation of the bushing and the corresponding connecting piece is continued.

[0017] The assembly method as described above includes correcting and processing the side beam pre-assembled bottom hole in the frame state, pre-connecting and fixing the brake hanger and the side beam, integrally processing the final assembly hole, installing the bushing, and installing the connecting piece. The assembly method is reasonable, the process part is used to pre-connect the side beam and the brake hanger, the process part plays the functions of fixing the brake hanger and positioning the side beam assembly hole and the brake hanger assembly hole, effectively ensures that the side beam assembly hole and the brake hanger assembly hole are coaxially arranged, and ensures the accuracy and reliability of the installation of the bushing and the connecting piece, without the need for re-expanding or processing.

[0018] The assembly method for connecting the brake hanger and the side beam as described above, the side beam pre-assembled bottom hole is provided in multiple places, and the multiple side beam pre-assembled bottom holes are arranged in multiple rows and multiple columns;

[0019] The setting positions of the brake hanger assembly holes correspond to the setting positions of the side beam pre-assembled bottom holes one by one, and the setting of the brake hanger assembly holes and the side beam pre-assembled bottom holes in multiple rows and multiple columns can effectively ensure the reliable connection of the brake hanger and the side beam.

[0020] The assembly method for connecting the brake hanger and the side beam as described above, the process part is a process stud, the process stud realizes the preliminary connection of the brake hanger and the side beam, and facilitates the subsequent processing of the side beam assembly hole and the brake hanger assembly hole.

[0021] The assembly method for connecting the brake suspension seat and the side beam as described above, the process piece is provided with at least two, two process pieces are arranged through two diagonal side beam assembly holes respectively, and the process piece is arranged through two diagonal side beam assembly holes and brake suspension seat assembly holes, which is beneficial to guarantee the stability of the preliminary connection of the brake suspension seat and the side beam and facilitate the accurate acquisition of the assembly final hole.

[0022] The assembly method for connecting the brake suspension seat and the side beam as described above, the process piece includes a first section and a second section connected in sequence, the diameter of the first section is matched with the inner diameter of the side beam assembly hole, and the second section is provided with a threaded structure in a ring shape, and the diameter of the second section is matched with the inner diameter of the brake suspension seat assembly hole, so as to guarantee the reliable connection of the process piece with the side beam and the brake suspension seat.

[0023] The assembly method for connecting the brake suspension seat and the side beam as described above, when the process piece connects the side beam and the brake suspension seat, the side beam assembly hole and the brake suspension seat assembly hole are coaxially arranged, so as to guarantee the coaxiality of the side beam assembly hole and the brake suspension seat assembly hole, and correspondingly guarantee the coaxiality of the bushing, the connecting piece and the side beam assembly hole and the brake suspension seat assembly hole.

[0024] The assembly method for connecting the brake suspension seat and the side beam as described above, the brake suspension seat assembly hole is a counterbore, part of the brake suspension seat assembly hole is a threaded hole, one side of the threaded hole in the brake suspension seat assembly hole is a smooth hole, the inner diameter of the smooth hole is greater than that of the threaded hole, and the inner diameter of the smooth hole is smaller than that of the side beam assembly hole, so as to realize the reliable connection of the process piece or the connecting piece with the side beam and the brake suspension seat.

[0025] The side beam pre-assembly bottom hole is a through hole, and the side beam pre-assembly bottom hole is arranged through the thickness direction of the side beam.

[0026] The assembly method for connecting the brake suspension seat and the side beam as described above, the other side beam assembly hole and the corresponding brake suspension seat assembly hole are integrally machined, which includes grinding the smooth hole of the side beam assembly hole and the corresponding brake suspension seat assembly hole, so as to guarantee the smooth formation of the assembly final hole.

[0027] The assembly method for connecting the brake suspension seat and the side beam as described above, the inner diameter of the threaded hole in the brake suspension seat assembly hole is 15-20 mm, the inner diameter of the smooth hole is 20-36 mm, the inner diameter of the side beam assembly hole is 22-38 mm, and the inner diameter of the assembly final hole integrally machined is 24-40 mm.

[0028] The assembly method for connecting the brake suspension seat and the side beam as described above, before the assembly of the bushing, the bushing is cold shrunk, and the cold shrunk bushing is pushed into the corresponding assembly final hole.

[0029] The cold shrinking of the bushing includes the following: the bushing is placed into liquid nitrogen for cold shrinking, the bushing is placed into the assembly final hole after cold shrinking, gap assembly of the bushing and the assembly final hole is realized, and the size of the bushing is restored to normal temperature after the bushing is installed in place, at which time interference connection with the assembly final hole is formed, interference connection of the bushing and the assembly final hole is realized, and extrusion and delamination of the composite side beam and the brake hanger are avoided.

[0030] The cold shrunk bushing is pushed into the corresponding assembly final hole by using a bushing assembly tool, the bushing assembly tool includes a positioning guide stud and a thrust sleeve, the bushing assembly tool plays a guiding role in the installation of the bushing, and is beneficial to balanced stress pushing of the bushing.

[0031] The method for assembling the brake hanger and the side beam as described above, the cold shrunk bushing is pushed into the corresponding assembly final hole, which includes the following:

[0032] The positioning guide stud is screwed into the brake hanger assembly hole;

[0033] The bushing is sleeved on the positioning guide stud in the ring direction;

[0034] The bushing is pushed into the corresponding assembly final hole by using a thrust sleeve.

[0035] In a second aspect, the application further provides an application of the method for assembling the brake hanger and the side beam, which is applied to the connection of the brake hanger and the composite side beam, or the connection of the composite brake hanger and the side beam, or the connection of the composite brake hanger and the composite side beam.

[0036] The beneficial effects of the application are as follows:

[0037] 1) The assembly method of the application is reasonable, the side beam is pre-assembled and bottom hole is modified based on the frame, which is beneficial to the processing of the assembly final hole; the side beam and the brake hanger are pre-connected through a process part, the process part plays the functions of fixing the brake hanger, positioning the side beam assembly hole and the brake hanger assembly hole, effectively ensuring the coaxial arrangement of the side beam assembly hole and the brake hanger assembly hole, and ensuring the accuracy and reliability of the subsequent installation of the bushing and the connecting piece, so that the brake hanger and the side beam can be successfully assembled; moreover, the method steps are reasonable, the side beam assembly hole does not need to be re-expanded or processed, the probability of rework is reduced, and the assembly efficiency and quality of the brake hanger are ensured.

[0038] 2) In the present application, after the side beam is installed in the frame state, firstly, the two end face areas of the side beam pre-assembled bottom hole are processed based on the frame to eliminate the deviation of the side beam vertical plane flatness and the frame horizontal plane perpendicularity; then the side beam pre-assembled bottom hole is expanded to correct the size deviation of the side beam pre-assembled bottom hole caused by the non-uniformity of the side beam reference and the frame reference, and after the deviation is eliminated, subsequent processing is carried out, which is beneficial to ensure the reliability of the connection between the side beam and the brake hanger.

[0039] 3) In the present application, a plurality of rows and columns of side beam pre-assembled bottom holes are arranged, and the corresponding brake hanger assembly holes are also arranged in a plurality of rows and columns, which is beneficial to the process part passing through part of the side beam assembly hole and the brake hanger assembly hole. The process part connects and fixes the brake hanger and the side beam, realizes the preliminary stable connection between the side beam and the brake hanger, and the process part has the functions of fixing and positioning, which can ensure the coaxiality of the side beam assembly hole and the brake hanger assembly hole, and is beneficial to the processing of the side beam assembly hole and the brake hanger assembly hole to obtain the assembly final hole with appropriate size.

[0040] 4) In the present application, the brake hanger assembly hole is a counterbore, part of the brake hanger assembly hole is a threaded hole, the side of the brake hanger assembly hole close to the side beam assembly hole is a smooth hole for the subsequent insertion of the bushing, and part of the brake hanger assembly hole is a threaded hole, which is beneficial to the connection of the process stud or connecting piece between the side beam and the brake hanger.

[0041] 5) In the present application, the bushing is put into the assembly final hole after cold shrinking, and the bushing is put into the assembly final hole after cold shrinking, realizing the clearance assembly of the bushing and the assembly final hole. When the bushing is installed in place and the size of the bushing returns to normal temperature, an interference connection is formed between the bushing and the assembly final hole, and the interference connection between the bushing and the assembly final hole is realized, and the interference press-fitting method is avoided to avoid the extrusion and delamination of the composite material side beam and the brake hanger.

[0042] 6) In the present application, the bushing is installed by using the bushing assembly tool, which plays a guiding role in the installation of the bushing, and is beneficial to the balanced stress of the bushing pushed into the assembly final hole. BRIEF DESCRIPTION OF DRAWINGS

[0043] The drawings accompanying the specification of the present application form a part thereof, serve to provide further understanding of the present application, and together with the description, explain the present application. The present application is shown by way of illustration in the drawings and their description is not intended as an improper limitation of the present application.

[0044] Figure 1 is a schematic view of the connection between the side beam and the brake hanger in the assembly method of the brake hanger and the side beam according to one or more embodiments of the present application.

[0045] Figure 2 is a sectional view of the connection between the side beam and the brake hanger in the assembly method of the brake hanger and the side beam according to one or more embodiments of the present application.

[0046] In the drawings: the mutual distance or size is exaggerated for showing the position of each part, and the schematic view is only for illustration.

[0047] Wherein: 1. brake hanger, 2. side beam, 3. side beam assembly hole, 4. brake hanger assembly hole, 5. threaded hole. DETAILED DESCRIPTION

[0048] It should be noted that the following detailed description is illustrative only and is intended to provide further description of the application. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

[0049] It should be noted that the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit exemplary embodiments according to the present application. As used herein, the singular form is intended to include the plural form unless the context clearly indicates otherwise, and it should also be understood that when the terms "comprise" and / or "include" are used in the specification, they indicate the presence of the features, steps, operations, devices, components and / or combinations thereof;

[0050] As introduced in the background, there is a problem of unreliable connection between side beam and brake hanger in the prior art, in order to solve the above technical problem, the present application proposes an assembly method for connecting brake hanger and side beam and its application.

[0051] Example one

[0052] In a typical embodiment of the present application, referring to Figure 1 As shown in the figure, an assembly method for connecting brake hanger and side beam, comprising:

[0053] After the side beam 2 is installed in the frame state, two-step processing is performed on the side beam pre-assembly bottom hole based on the frame: the two end face areas (two vertical faces on the side beam) of the side beam pre-assembly bottom hole are processed to eliminate the deviation between the side beam vertical face flatness and the frame horizontal plane perpendicularity; after processing, the side beam pre-assembly bottom hole is expanded to correct the size deviation of the side beam pre-assembly bottom hole, forming the side beam assembly hole 3;

[0054] The process part passes through part of the side beam assembly hole 3 and the brake hanger assembly hole 4 to connect the side beam 2 and the brake hanger 1;

[0055] The other side beam assembly hole 3 and the corresponding brake hanger assembly hole 4 are integrally processed to form the final assembly hole;

[0056] The bushing enters the final assembly hole to realize the bushing passing through the side beam 2 and assembling to the brake hanger 1;

[0057] The connecting piece penetrates the bushing and is screwed into the brake hanger assembly hole 4 to connect the side beam 2 with the brake hanger 1.

[0058] The process piece is removed, and the side beam assembly hole 3 and the brake hanger assembly hole 4 where the process piece is located are integrally machined to the assembly final hole. The bushing is assembled into the newly machined assembly final hole according to the method described above. After the bushing is assembled, the installation of the corresponding connecting piece is continued.

[0059] Here, it is important to note that the brake hanger assembly hole is based on the frame (frame center) as a reference to process the side beam pre-assembly hole in two steps, including milling the end face area of the side beam pre-assembly hole, and expanding the hole of the side beam pre-assembly hole through a drilling mechanism to correct the spatial position size deviation of the side beam pre-assembly hole caused by the non-uniformity of the positioning reference during pre-processing and the positioning reference in the frame state. After the hole expansion is completed, the side beam assembly hole and the brake hanger assembly hole are both based on the frame as a reference, which can make the side beam assembly hole and the brake hanger assembly hole coaxial when the side beam and the brake hanger are aligned.

[0060] It can be understood that the side beam pre-assembly hole is provided in multiple places, and the multiple side beam pre-assembly holes are arranged in multiple rows and columns, specifically two rows and two columns, a total of four side beam pre-assembly holes. The side beam pre-assembly hole is corrected to form the side beam assembly hole 3. Moreover, the setting position of the brake hanger assembly hole 4 corresponds to the setting position of the side beam pre-assembly hole one by one, and the brake hanger assembly hole 4 is also provided in two rows and two columns. The arrangement of the multiple rows and columns of brake hanger assembly holes 4 and side beam pre-assembly holes can effectively ensure the reliable connection between the brake hanger 1 and the side beam 2 through the bushing and the connecting piece.

[0061] It is important to note that since the brake hanger 1 is installed at the corner of the side beam 2, the side beam pre-assembly hole is located at the corner of the side beam 2, and the distance between the two adjacent side beam pre-assembly holes near the outer side of the side beam corner is greater than the distance between the two adjacent side beam pre-assembly holes on the inner side.

[0062] In this embodiment, the process piece is a process stud, which realizes the preliminary connection between the brake hanger 1 and the side beam 2. The process stud has both fixing and positioning functions, which can ensure the coaxiality of the side beam assembly hole 3 and the brake hanger assembly hole 4, and is conducive to the machining of the side beam assembly hole and the brake hanger assembly hole to obtain a suitable assembly final hole.

[0063] Specifically, the process stud is provided with at least two, that is, the process stud is arranged through at least two side beam assembly holes 3, brake hanger assembly holes 4, in the embodiment, the process stud is provided with two, which are installed diagonally, and the other two side beam assembly holes 3 and brake hanger assembly holes 4 are exposed, so as to facilitate the machining of the exposed two side beam assembly holes 2 and brake hanger assembly holes 4, and the two process studs are arranged through the diagonally arranged two side beam assembly holes 3, respectively, and the process piece is arranged through the diagonally arranged two side beam assembly holes 3 and brake hanger assembly holes 4, which is beneficial to ensure the stability of the preliminary connection of the brake hanger 1 and the side beam 2 and facilitate the accurate acquisition of the final assembly hole in the subsequent process.

[0064] Moreover, when the process piece connects the side beam 2 and the brake hanger 1, the side beam assembly hole 3 and the brake hanger assembly hole 4 are coaxially arranged, which ensures the coaxiality of the side beam assembly hole 3 and the brake hanger assembly hole 4, and accordingly ensures the coaxiality of the subsequent bushing, connecting piece and side beam assembly hole 3 and brake hanger assembly hole 4.

[0065] It can be understood that the size of the process stud is matched with the size of the side beam assembly hole 3 and the brake hanger assembly hole 4, the process stud comprises a first segment and a second segment connected in sequence, the diameter of the first segment is matched with the inner diameter of the side beam assembly hole 3, the length of the first segment is greater than the length of the second segment, and the length of the first segment is greater than the length of the side beam assembly hole 3, because the inner diameter of the side beam assembly hole 3 is greater than the inner diameter of the brake hanger assembly hole 4, the outer diameter of the first segment is greater than the outer diameter of the second segment, the length of the second segment is matched with the length of the brake hanger assembly hole 4, the end of the second segment close to the first segment is provided with a tapered stage with a reduced diameter, the other side of the tapered stage away from the first segment is annularly provided with a thread structure matched with the thread hole 5 of the brake hanger assembly hole 4, and the diameter of the second segment is matched with the inner diameter of the brake hanger assembly hole 4, so as to ensure the reliable connection of the process stud with the side beam 2 and the brake hanger 1.

[0066] Considering that the process stud is connected before being integrally machined, the outer diameter of the process stud is smaller than the outer diameter of the connecting piece, and the outer diameter of the thread structure of the process stud can be the same as the outer diameter of the thread structure of the connecting piece.

[0067] In the embodiment, the depth of the brake hanger assembly hole 4 is smaller than the thickness of the brake hanger 1, that is, the brake hanger is a blind hole, and the brake hanger assembly hole 4 is a counterbore, part of the brake hanger assembly hole 4 is a thread hole 5, that is, the brake hanger assembly hole 4 is provided with a light hole on the side close to the side beam 2, the inner side of the light hole is a thread hole 5, the inner diameter of the light hole is greater than the inner diameter of the thread hole 5, and the inner diameter of the light hole is 6-16mm greater than the inner diameter of the thread hole, the bushing enters the light hole of the brake hanger assembly hole 4 after passing through the side beam assembly hole 3 and does not reach the thread hole 5, so that the bushing is assembled to the brake hanger 1, and such a structure can also realize the reliable connection of the process stud or connecting piece with the side beam 2 and the brake hanger 1.

[0068] It can be understood that the side beam prefabricated assembly hole, i.e., the side beam prefabricated hole 3, is a through hole, and the side beam prefabricated assembly hole is arranged through the thickness direction of the side beam 2.

[0069] In addition, in some examples, the connecting piece is specifically a connecting bolt, the connecting bolt has a threaded structure matched with the threaded hole 5, the length of the connecting bolt is greater than the length of the bushing, the connecting bolt can be screwed into the brake hanger seat threaded hole 5 through the bushing, and tightening is achieved.

[0070] Need to explain is that the inner diameter of the side beam prefabricated assembly hole can be less than, greater than, or equal to the inner diameter of the brake hanger seat assembly hole light hole, after the side beam prefabricated assembly hole is reamed, the inner diameter of the side beam prefabricated assembly hole increases, the inner diameter of the side beam assembly hole 3 formed is greater than or equal to the inner diameter of the wider side of the brake hanger seat assembly hole 4, after the side beam assembly hole 3 and the brake hanger seat assembly hole 4 are integrally machined, the two form a final assembly hole with the same inner diameter.

[0071] For example, in some examples, the inner diameter of the threaded hole 5 in the brake hanger seat assembly hole is 15-20 mm, such as 16 mm, the inner diameter of the light hole is 20-36 mm, such as 22 mm, the inner diameter of the side beam assembly hole 3 is 22-38 mm, such as 23 mm, and the inner diameter of the final assembly hole (the inner diameter of the side beam assembly hole and the wider side of the brake hanger seat assembly hole form a final assembly hole with the same inner diameter) formed by integral machining is 24-40 mm, such as 24 mm.

[0072] Among them, the integral machining of the other side beam assembly hole 3 and the corresponding brake hanger seat assembly hole 4 includes grinding machining of the side beam assembly hole 3 and the corresponding brake hanger seat assembly hole 4, which can ensure smooth formation of the final assembly hole; moreover, after the side beam 2 and the brake hanger seat 1 are connected by the process stud, the integral machining of the side beam assembly hole 3 and the corresponding brake hanger seat assembly hole 4 can also ensure the coaxiality of the final assembly hole formed by the two.

[0073] In this embodiment, before the bushing is assembled, the bushing is cold shrunk, and the cold shrunk bushing is pushed into the corresponding final assembly hole.

[0074] Cold shrinking of the bushing includes the following contents: the bushing is placed in liquid nitrogen for cold shrinking, the outer diameter of the cold shrunk bushing becomes smaller, the cold shrunk bushing is placed in the final assembly hole, gap assembly of the bushing and the final assembly hole is achieved, and when the bushing is installed in place and the size of the bushing returns to normal temperature, an interference fit is formed between the bushing and the final assembly hole, which not only achieves interference fit of the bushing and the final assembly hole but also avoids extrusion delamination of the composite side beam and the brake hanger seat by interference press fitting.

[0075] Of course, it can be easily understood that the bushing can also be placed in other environments for cold shrinking.

[0076] In some examples, the bushing assembly tool is used to push the cold-shrunk bushing into the corresponding assembly final hole, and the bushing assembly tool includes a positioning guide stud and a thrust sleeve, which plays a guiding role in the installation of the bushing and is beneficial to the balanced force to push the bushing into the assembly final hole.

[0077] Need to explain is that the positioning guide stud is a stud, and the thread structure is arranged in a ring shape. The thrust sleeve is an annular sleeve structure. The bushing is an annular cylindrical structure, the inner diameter of the bushing is greater than the outer diameter of the positioning guide stud, and the diameter of the thrust sleeve is the same as the diameter of the bushing at normal temperature, or the inner diameter of the thrust sleeve is smaller than the inner diameter of the bushing at normal temperature.

[0078] In some examples, the bushing assembly tool is used to push the cold-shrunk bushing into the corresponding assembly final hole, and the bushing assembly tool includes a positioning guide stud and a thrust sleeve, which plays a guiding role in the installation of the bushing and is beneficial to the balanced force to push the bushing into the assembly final hole.

[0079] The positioning guide stud is screwed into the brake hanger assembly hole;

[0080] The bushing is sleeved on the positioning guide stud in a ring shape, and the positioning guide stud plays a positioning and guiding function in the assembly of the bushing;

[0081] The thrust sleeve is used to push the bushing into the corresponding assembly final hole, and the thrust sleeve plays a function of ensuring the balanced force of the end face of the bushing.

[0082] In the embodiment, the machining of the two end face regions of the side beam pre-assembled bottom hole, the reaming machining of the side beam pre-assembled bottom hole, and the integrated machining of the side beam assembly hole and the corresponding brake hanger assembly hole are all performed on the existing machining center. The machining center is provided with a clamp for clamping and fixing the side beam and the brake hanger. The two end face regions of the side beam pre-assembled bottom hole are milled by the machining center. The side beam pre-assembled bottom hole, the side beam assembly hole, and the corresponding brake hanger assembly hole are machined by a drilling mechanism.

[0083] The assembly method provided in the embodiment includes the following steps: correction machining of the side beam pre-assembled bottom hole in the frame state, pre-connection and fixation of the brake hanger and the side beam, integrated machining of the assembly final hole, bushing installation, and connector installation. The assembly method is reasonable. First, the correction machining of the side beam pre-assembled bottom hole in the frame state is realized, which eliminates the deviation and is beneficial to the subsequent machining of the assembly final hole. The process piece is used to pre-connect the side beam and the brake hanger. The process piece plays a function of fixing the brake hanger and a function of positioning the side beam assembly hole and the brake hanger assembly hole, effectively ensuring the coaxial arrangement of the side beam assembly hole and the brake hanger assembly hole, effectively ensuring the machining effect of the assembly final hole, and ensuring the accuracy and reliability of the subsequent installation of the bushing and the connector. The brake hanger and the side beam can be smoothly assembled, reaming or machining is not required again, the probability of rework is reduced, the assembly efficiency and quality of the brake hanger are ensured.

[0084] Embodiment two

[0085] The embodiment provides an application of an assembly method of connecting a brake suspension seat and a side beam.

[0086] Here, the composite material can be a carbon fiber material or other composite material. The assembly method of connecting the brake suspension seat and the side beam provided by the embodiment can also realize connection of a common carbon steel brake suspension seat and the side beam. After the side beam is installed as a frame, the end face area of the side beam pre-assembled bottom hole is processed, and the side beam pre-assembled bottom hole is expanded. The correction work is completed before assembly, and no rework is required after the connection of the subsequent connecting piece is completed, thereby effectively ensuring the efficiency and assembly quality of the brake suspension seat and the side beam.

[0087] The above merely provides preferred embodiments of the present application but should not be used to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An assembly method for connecting a brake hanger to a side beam, characterized in that, include: After the side beam is installed in the frame state, the two end face areas of the prefabricated assembly bottom hole of the side beam are processed with the frame as the reference to eliminate the deviation between the flatness of the side beam elevation and the verticality of the frame horizontal plane. After the processing is completed, the prefabricated assembly bottom hole of the side beam is enlarged to correct the dimensional deviation of the prefabricated assembly bottom hole of the side beam, forming the side beam assembly hole. The process component passes through part of the side beam assembly hole and the brake hanger assembly hole to connect the side beam and the brake hanger; The other side beam assembly holes and the corresponding brake hanger assembly holes are machined together to form the final assembly holes; The bushing enters the final assembly hole to allow the bushing to pass through the side beam and be assembled to the brake hanger; The connector is inserted into the bushing and screwed into the assembly hole of the brake hanger to connect the side beam and the brake hanger. Remove the process components, and machine the side beam assembly holes and brake hanger assembly holes where the process components are located into a single assembly hole. Then continue to install the bushings and corresponding connecting parts.

2. The assembly method for connecting the brake hanger and the side beam according to claim 1, characterized in that, The prefabricated assembly bottom holes of the side beams are provided in multiple locations, and these multiple prefabricated assembly bottom holes are arranged in multiple rows and columns. The positions of the brake hanger assembly holes correspond one-to-one with the positions of the prefabricated assembly bottom holes of the side beams.

3. The assembly method for connecting the brake hanger and the side beam according to claim 1, characterized in that, The process component is a process stud.

4. The assembly method for connecting the brake hanger and the side beam according to claim 2, characterized in that, At least two process components are provided, and the two process components are respectively arranged through two diagonally opposite side beam assembly holes.

5. The assembly method for connecting the brake hanger and the side beam according to claim 1, characterized in that, The process component includes a first section and a second section connected in sequence. The diameter of the first section is adapted to the inner diameter of the side beam assembly hole. The second section is provided with a circumferential thread structure. The diameter of the second section is adapted to the inner diameter of the brake hanger assembly hole.

6. The assembly method for connecting the brake hanger and the side beam according to claim 1, characterized in that, When the process component connects the side beam and the brake hanger, the side beam assembly hole and the brake hanger assembly hole are coaxially arranged.

7. The assembly method for connecting the brake hanger and the side beam according to claim 1, characterized in that, The brake mount assembly hole is a countersunk hole, part of the brake mount assembly hole is a threaded hole, and one side of the threaded hole in the brake mount assembly hole is a smooth hole. The inner diameter of the smooth hole is larger than the inner diameter of the threaded hole, and the inner diameter of the smooth hole is smaller than the inner diameter of the side beam assembly hole. The bottom hole for prefabrication assembly of the side beam is a through hole, and the bottom hole for prefabrication assembly of the side beam is set through the thickness direction of the side beam.

8. The assembly method for connecting the brake hanger and the side beam according to claim 7, characterized in that, The integral machining of the other side beam assembly holes and the corresponding brake mount assembly holes includes grinding the smooth holes of the side beam assembly holes and the corresponding brake mount assembly holes.

9. The assembly method for connecting the brake hanger and the side beam according to claim 7, characterized in that, The inner diameter of the threaded hole in the brake mount assembly hole is 15-20mm, the inner diameter of the smooth hole is 20-36mm, the inner diameter of the side beam assembly hole is 22-38mm, and the inner diameter of the assembly final hole formed by integral machining is 24-40mm.

10. The assembly method for connecting the brake hanger and the side beam according to claim 1, characterized in that, Before the bushing is assembled, the bushing is shrunk by cold, and the shrunk bushing is pushed into the corresponding assembly hole. The process of shrinking the bushing includes the following: immersing the bushing in liquid nitrogen for shrinking. The cooled and shrunken bushing is pushed into the corresponding final assembly hole using a bushing assembly tooling, which includes a positioning guide stud and a thrust sleeve.

11. The assembly method for connecting the brake hanger and the side beam according to claim 10, characterized in that, The step of pushing the cooled and shrunken bushing into the corresponding assembly hole includes the following: Screw the positioning guide stud into the brake hanger mounting hole; The bushing is fitted around the locating guide stud in the circumferential direction; Use the thrust sleeve to push the bushing into the corresponding assembly hole.

12. The application of the assembly method for connecting the brake hanger and the side beam according to any one of claims 1-11, characterized in that, It is used for connecting the brake hanger and the composite material side beam, or for connecting the composite material brake hanger and the side beam, or for connecting the composite material brake hanger and the composite material side beam.

Images