Bogie frame, assembling method and bogie

Abstract

The invention discloses a bogie frame, an assembling method and a bogie, and belongs to the technical field of railway vehicles. The bogie frame comprises two side beam assemblies which are oppositely arranged, and two side beam assemblies which are oppositely arranged, the end beam assembly is arranged between the two side beam assemblies and connected to the two side beam assemblies, and the end beam assembly is used for installing a car coupler buffer device; the first cross beam assembly and the end beam assembly are oppositely arranged between the two side beam assemblies, and the first cross beam assembly is connected to the two side beam assemblies; the traction beam assembly is arranged between the two side beam assemblies, is connected to the two side beam assemblies, is arranged between the end beam assembly and the first cross beam assembly, is connected to the first cross beam assembly and the end beam assembly, and is used for mounting a lower center plate; and the two second cross beam assemblies are respectively arranged between the two side beam assemblies and the traction beam assembly and are respectively connected with the side beam assemblies and the traction beam assembly. The overall stability of the bogie frame is better, the overall structural strength is higher, and the bearing performance is better.

Description

Technical Field

[0001] The present application belongs to the technical field of railway vehicles, and in particular relates to a bogie frame, an assembly method and a bogie. Background Art

[0002] The bogie of a railway freight vehicle includes a frame, a wheelset device, a traction drive device, a spring transmission device, a basic braking device, a vibration reduction device, a balancing device, etc.

[0003] The frame is the skeleton of the bogie, one of the key components and the installation basis for other components of the bogie. It plays the role of transmitting traction force, braking force, width direction force and vertical force during the traction operation of the locomotive.

[0004] In the related art, the load-bearing performance of the frame is relatively poor. Summary of the invention

[0005] The present application aims to solve the technical problem of poor load-bearing performance of a bogie frame at least to a certain extent. To this end, the present application provides a bogie frame, an assembly method and a bogie.

[0006] In a first aspect, an embodiment of the present application provides a bogie frame, comprising:

[0007] The two side beams are arranged opposite to each other;

[0008] An end beam component is arranged between the two side beam components and connected to the two side beam components, and the end beam component is used to install a coupler buffer device;

[0009] A first cross beam component is arranged between the two side beam components opposite to the end beam component and connected to the two side beam components;

[0010] a traction beam assembly, arranged between the two side beam assemblies and connected to the two side beam assemblies, arranged between the end beam assembly and the first cross beam assembly and connected to the first cross beam assembly and the end beam assembly, the traction beam assembly being used to install the lower center plate; and,

[0011] The two second cross beam components are respectively arranged between the two side beam components and the traction beam component, and are respectively connected to the side beam components and the traction beam component.

[0012] In some embodiments, the traction beam comprises:

[0013] A first connection portion extends along the length direction of the side beam component, and two ends of the first connection portion are respectively connected to the end beam component and the first cross beam component; and,

[0014] The two second connection parts are respectively arranged on two opposite sides of the first connection part and located between the second crossbeam component and the first crossbeam component. The two second connection parts are both connected to the first connection part and are respectively connected to the two side beam components.

[0015] In some embodiments, the truck frame further comprises:

[0016] The reinforcing beam is arranged between the two side beam components and is located on a side of the first cross beam component away from the traction beam component. The reinforcing beam is connected to the two side beam components.

[0017] In a second aspect, an embodiment of the present application provides an assembly method of the bogie frame described in the first aspect, the assembly method of the bogie frame comprising:

[0018] Processing positioning marks on both of the side beam components;

[0019] Placing the side beam assembly, the end beam assembly, the first cross beam assembly, the traction beam assembly and the second cross beam assembly on a support seat for assembling a tire according to relative positions;

[0020] Adjusting the relative positions of the two side beam components according to the positioning marks, and positioning and pressing the side beam components onto the support seat of the assembled tire by means of the pressing member of the assembled tire;

[0021] Adjust the relative positions of the end beam assembly, the first cross beam assembly, the traction beam assembly and the second cross beam assembly and position and press the end beam assembly, the first cross beam assembly, the traction beam assembly and the second cross beam assembly on the support seat of the assembly tire through the pressing piece of the assembly tire;

[0022] Weld the traction beam assembly and the side beam assembly, the traction beam assembly and the second cross beam assembly, the traction beam assembly and the first cross beam assembly, the traction beam assembly and the end beam assembly, the first cross beam assembly and the side beam assembly, the second cross beam assembly and the side beam assembly, and the end beam assembly and the side beam assembly.

[0023] In some embodiments, processing positioning marks on the two side beam components includes:

[0024] Processing the center line in the width direction and the center line in the length direction on the two side beam components respectively;

[0025] Two punched holes are processed on the width direction center line with the length direction center line as the symmetrical center line, and the punched holes are the positioning marks.

[0026] In some embodiments, adjusting the relative position of the two side beams according to the positioning mark includes:

[0027] The relative positions of the two side beams are adjusted so that the spacings between the two groups of punched holes located on the diagonal lines are equal to the set values.

[0028] In some embodiments, the assembled tire comprises:

[0029] Pedestal;

[0030] A support seat, disposed on the base, for supporting the side beam assembly, the end beam assembly, the first cross beam assembly, the traction beam assembly and the second cross beam assembly;

[0031] A door frame, mounted on the base;

[0032] A pressing member is installed on the portal frame and is located between the portal frame and the support seat. The pressing member can move toward the support seat to press the side beam assembly, the end beam assembly, the first cross beam assembly, the traction beam assembly and the second cross beam assembly located on the support seat.

[0033] In some embodiments, welding is performed using metal-electrode mixed gas shielded welding, wherein the mixed gas includes Ar and CO2, Ar:CO2=80%:20%, and the welding wire diameter is 1.2 mm.

[0034] In some embodiments, the welding process parameters are: welding current is 210-240A, welding voltage is 22-26V, and welding heat input is ≤0.6KJ / mm.

[0035] In some embodiments, welding adopts a multi-layer and multi-pass welding process. Before welding, the welding area is preheated and the preheating temperature is controlled at 80-100°C; during the welding process, the inter-pass temperature is controlled and the inter-pass temperature is controlled at 80-100°C.

[0036] In some embodiments, the assembly method further includes: performing spectrum aging treatment on the weld after welding, and the spectrum aging treatment time is 40 to 45 minutes.

[0037] In a third aspect, an embodiment of the present application provides a bogie, comprising the bogie frame described in the first aspect above.

[0038] The present invention has at least the following beneficial effects:

[0039] The bogie frame includes an end beam assembly, a first cross beam assembly, a traction beam assembly, two side beam assemblies and two second cross beam assemblies. The end beam assembly, the first cross beam assembly and the traction beam assembly are all arranged between the two side beam assemblies and are all connected to the two side beam assemblies. The traction beam assembly is not only connected to the side beam assembly, but also to the end beam assembly, the first cross beam assembly and the two second cross beam assemblies. The second cross beam assembly is also connected to the side beam assembly. After such a design, the overall stability of the bogie frame is better, the overall structural strength is higher, the load-bearing performance is better, which helps the bogie frame to carry heavier cargo boxes, etc. The traction beam assembly is not only connected to the side beam assembly, but also to the end beam assembly, the first cross beam assembly and the two second cross beam assemblies. After such design, the traction beam assembly has higher structural strength and better supporting performance. Therefore, the lower center plate can be installed on the traction beam assembly, and the traction beam assembly is not easy to deform under force, and has better supporting performance for objects such as cargo boxes located above it; and after such design, the tensile strength of the bogie frame is better, and the coupler buffer device is arranged on the end beam assembly. When the end beam assembly is pulled, the tension exerted on the traction beam can be transmitted to the traction beam assembly and the side beam assembly, and then transmitted to the first cross beam assembly and the two second cross beam assemblies through the traction beam assembly and the side beam assembly. The force at various locations of the bogie frame is relatively uniform and not easy to deform.

[0040] The assembly method of the bogie frame processes the positioning mark and positions the side beam component through the positioning mark, and then adjusts the relative positions of the traction beam component, the second cross beam component, the end beam component and the first cross beam component, and guarantees the assembly size of the bogie frame by designing the assembly tire to press the side beam component, the end beam component, the first cross beam component, the traction beam component and the second cross beam component, and avoids the displacement of the side beam component, the end beam component, the first cross beam component, the traction beam component and the second cross beam component during welding; the assembly method can also reduce welding defects by formulating reasonable welding parameters, welding steps, etc., so that the mechanical properties of the welded joints and the internal and external quality of the welds fully meet the product process quality requirements. When the material of the bogie frame is WeldoX960E high-strength low-alloy fine-grained structural steel, the assembly method can also ensure that the assembly size of the bogie frame, the mechanical properties of the welded joints, and the internal and external quality of the welds meet the product process quality requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following is a brief introduction to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0042] Figure 1 A schematic diagram of the structure of a bogie in one or more embodiments of the present application is shown.

[0043] Figure 2 A schematic diagram of the structure of a bogie frame in one or more embodiments of the present application is shown.

[0044] Figure 3 A schematic diagram of the structure of the bogie frame with the reinforcing beam hidden in one or more embodiments of the present application is shown.

[0045] Figure 4 A front view of an assembled tire in one or more embodiments of the present application is shown.

[0046] Figure 5 A top view of an assembled tire in one or more embodiments of the present application is shown.

[0047] Figure 6 A left side view of an assembled tire in one or more embodiments of the present application is shown.

[0048] Figure 7 A schematic diagram showing the application of processing the width direction center line, length direction center line and punching holes on the side beam component.

[0049] Figure markings: 1000-bogie, 100-bogie frame, 110-side beam assembly, 120-end beam assembly, 130-first crossbeam assembly, 140-traction beam assembly, 141-first connecting part, 142-second connecting part, 143-lower center plate fixing structure, 150-second crossbeam assembly, 160-reinforcement beam, 170-lower pull rod seat, 200-lower center plate, 300-coupler buffer device, 2000-assembly tire, 2100-base, 2200-support seat, 2300-gantry, 2310-first pillar, 2320-second pillar, 2320a-limiting groove, 2330-limiting column, 2400-pressing piece. DETAILED DESCRIPTION

[0050] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions 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. 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.

[0051] It should be noted that all directional indications in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between various components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0052] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0053] In addition, in the present invention, descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0054] In the related art, the bogie frame has the technical problem of poor bearing performance. The embodiment of the present application provides a bogie frame, an assembly method and a bogie, which can at least solve the technical problem of poor bearing performance of the bogie frame to a certain extent.

[0055] The present application is described below with reference to the accompanying drawings and specific embodiments:

[0056] like Figure 1 , Figure 2 and Figure 3 As shown, the bogie frame 100 includes an end beam assembly 120 , a first cross beam assembly 130 , a traction beam assembly 140 , two side beam assemblies 110 and two second cross beam assemblies 150 . The two side beam assemblies 110 are arranged opposite to each other; the end beam assembly 120 is arranged between the two side beam assemblies 110 and connected to the two side beam assemblies 110, and the end beam assembly 120 is used to install the coupler buffer device 300; the first cross beam assembly 130 and the end beam assembly 120 are arranged between the two side beam assemblies 110 opposite to each other and connected to the two side beam assemblies 110; the traction beam assembly 140 is arranged between the two side beam assemblies 110 and connected to the two side beam assemblies 110, arranged between the end beam assembly 120 and the first cross beam assembly 130, and connected to the first cross beam assembly 130 and the end beam assembly 120, and the traction beam assembly 140 is used to install the lower center plate 200; the two second cross beam assemblies 150 are respectively arranged between the two side beam assemblies 110 and the traction beam assembly 140, and are respectively connected to the side beam assembly 110 and the traction beam assembly 140.

[0057] The wheelset device, traction drive device, spring transmission device, basic braking device, vibration reduction device, balancing device, etc. of the bogie 1000 can be connected to the end beam assembly 120, the first cross beam assembly 130, the traction beam assembly 140, the two side beam assemblies 110 or the two second cross beam assemblies 150, which are not limited in the present application.

[0058] The two side beam assemblies 110 are arranged opposite to each other, and there is a certain distance between the two side beam assemblies 110. The end beam assembly 120 is arranged between the two side beam assemblies 110, one end of the end beam assembly 120 is fixedly connected to one of the side beam assemblies 110, and the other end is fixedly connected to the other side beam assembly 110. The first cross beam assembly 130 and the end beam assembly 120 are arranged at intervals along the length direction of the side beam assembly 110, the first cross beam assembly 130 is arranged between the two side beam assemblies 110, one end of the first cross beam assembly 130 is fixedly connected to one of the side beam assemblies 110, and the other end is fixedly connected to the other side beam assembly 110. The end beam assembly 120 is also arranged between the two side beam assemblies 110, one end of the end beam assembly 120 is fixedly connected to one of the side beam assemblies 110, and the other end is fixedly connected to the other side beam assembly 110. The traction beam assembly 140 is located between the two side beam assemblies 110, one end is fixedly connected to one of the side beam assemblies 110, and the other end is fixedly connected to the other side beam assembly 110. The traction beam assembly 140 is also located between the end beam assembly 120 and the first cross beam assembly 130, with one end fixedly connected to the end beam assembly 120 and the other end fixedly connected to the first cross beam assembly 130. Two second cross beam assemblies 150 are provided, which are respectively located on both sides of the traction beam assembly 140. Figure 2 As shown, one is located at the front side of the traction beam assembly 140, fixedly connecting the traction beam assembly 140 and the side beam assembly 110 located at the front side, and the other is located at the rear side of the traction beam assembly 140, fixedly connecting the traction beam assembly 140 and the side beam assembly 110 located at the rear side.

[0059] The bogie frame 100 includes an end beam assembly 120, a first cross beam assembly 130, a traction beam assembly 140, two side beam assemblies 110 and two second cross beam assemblies 150. The end beam assembly 120, the first cross beam assembly 130 and the traction beam assembly 140 are all arranged between the two side beam assemblies 110 and are all connected to the two side beam assemblies 110. The traction beam assembly 140 is not only connected to the side beam assembly 110, but also to the end beam assembly 120, the first cross beam assembly 130 and the two second cross beam assemblies 150. The second cross beam assembly 150 is also connected to the side beam assembly 110. After such a design, the overall stability of the bogie frame 100 is better, the overall structural strength is higher, and the load-bearing performance is better, which helps the bogie frame 100 to carry heavier cargo boxes, etc. The traction beam assembly 140 is not only connected to the side beam assembly 110, but also connected to the end beam assembly 120, the first cross beam assembly 130 and the two second cross beam assemblies 150. After such a design, the traction beam assembly 140 has higher structural strength and better supporting performance. Therefore, the lower center plate 200 can be installed on the traction beam assembly 140. The traction beam assembly 140 is not easy to deform when subjected to force, and has better supporting performance for objects such as cargo boxes located above it; and after such a design, the tensile strength of the bogie frame 100 is better, and the coupler buffer device 300 is arranged on the end beam assembly 120. When the end beam assembly 120 is pulled, the tension exerted on the traction beam can be transmitted to the traction beam assembly 140 and the side beam assembly 110, and then transmitted to the first cross beam assembly 130 and the two second cross beam assemblies 150 through the traction beam assembly 140 and the side beam assembly 110. The bogie frame 100 is subjected to more uniform force at various locations and is not easy to deform.

[0060] like Figure 2 As shown, in some embodiments, the traction beam assembly 140 includes a first connection portion 141 and two second connection portions 142, the first connection portion 141 extends along the length direction of the side beam assembly 110, and the two ends of the first connection portion 141 are respectively connected to the end beam assembly 120 and the first cross beam assembly 130; the two second connection portions 142 are respectively arranged on the opposite sides of the first connection portion 141, and are located between the second cross beam assembly 150 and the first cross beam assembly 130, and the two second connection portions 142 are both connected to the first connection portion 141, and are respectively connected to the two side beam assemblies 110.

[0061] That is, the length direction of the first connection portion 141 is parallel to the length direction of the side beam assembly 110. Along the length direction of the first connection portion 141, one end of the first connection portion 141 is connected to the end beam assembly 120, and the other end is connected to the first cross beam assembly 130. The two second connection portions 142 are arranged opposite to each other and are respectively located on both sides of the first connection portion 141. The two second connection portions 142 are located between the second cross beam assembly 150 and the first cross beam assembly 130. Figure 2As shown, one of the second connection parts 142 is located at the front side of the first connection part 141, and the other second connection part 142 is located at the rear side of the first connection part 141. The second connection part 142 located at the front side is fixedly connected to the first connection part 141 and the side beam component 110 located at the front side, and the second connection part 142 located at the rear side is fixedly connected to the first connection part 141 and the side beam component 110 located at the rear side. After such design, the traction beam assembly 140 is in a "cross" shape. Along the length direction of the side beam assembly 110, the first cross beam assembly 130, the second connecting portion 142, the second cross beam assembly 150 and the end beam assembly 120 are arranged in sequence. The second connecting portion 142 strengthens the structural strength between the first cross beam assembly 130 and the second cross beam assembly 150, which helps to make the bogie frame 100 bear the load evenly at all parts. The first connecting portion 141 connects the first cross beam assembly 130, the second connecting portion 142, the second cross beam assembly 150 and the end beam assembly 120 in sequence, ensuring the overall structural strength of the bogie frame 100.

[0062] In some embodiments, a lower center plate fixing structure 143 is provided on the first connection portion 141, and the lower center plate fixing structure 143 is located at the intersection of the first connection portion 141 and the second connection portion 142, and the lower center plate 200 can be fixed on the lower center plate fixing structure 143 and located at the intersection of the first connection portion 141 and the second connection portion 142. With this design, the lower center plate 200 is located in the middle area of ​​the bogie frame 100, and the pressure applied by the upper center plate to the lower center plate 200 can be transmitted to the first cross beam assembly 130, the second cross beam assembly 150, the end beam assembly 120 and the side beam assembly 110 through the traction beam assembly 140, so that the bogie frame 100 is subjected to more uniform force and has better support stability.

[0063] In some embodiments, the length directions of the second connecting portion 142 , the first cross beam assembly 130 , the second cross beam assembly 150 and the end beam assembly 120 are all perpendicular to the length direction of the side beam assembly 110 .

[0064] In some embodiments, along the length direction of the end beam assembly 120, the first connecting portion 141 is connected to the middle of the end beam assembly 120, and the coupler buffer device 300 is also installed in the middle of the end beam assembly 120. This design helps to reduce the deformation of the end beam assembly 120 when the bogie frame 100 is towed.

[0065] In some embodiments, the bogie frame 100 further includes a reinforcing beam 160 , which is disposed between the two side beam assemblies 110 and located on a side of the first cross beam assembly 130 away from the traction beam assembly 140 , and the reinforcing beam 160 is connected to the two side beam assemblies 110 .

[0066] One end of the reinforcing beam 160 is fixedly connected to one of the side beam assemblies 110, and the other end is fixedly connected to the other side beam assembly 110. The design of the reinforcing beam 160 improves the structural strength of the bogie frame 100, and the stability and load-bearing performance of the bogie frame 100 are better. The reinforcing beam 160 is arranged on a side of the first cross beam assembly 130 away from the traction beam assembly 140, so that the reinforcing beam 160 is away from the end beam assembly 120, so as to avoid the reinforcing beam 160 interfering with the installation of the coupler buffer device 300 or interfering with the connection between two adjacent coupler buffer devices 300.

[0067] In some embodiments, the bogie frame 100 further includes a lower tie rod seat 170, which is fixedly connected to the lower end surface of the side beam assembly 110. The lower tie rod seat 170 can be used to position the axle box of the wheelset device of the bogie 1000, and its structure is diverse and is not limited in this application.

[0068] In some embodiments, four lower tie rod seats 170 are provided, two of which are provided on each side beam assembly 110 .

[0069] Based on the same inventive concept, the embodiment of the present application further provides a bogie 1000, which includes the above-mentioned bogie frame 100. The bogie 1000 may also include a wheelset device, a traction drive device, a spring transmission device, a basic brake device, a vibration reduction device, a balancing device, etc., which may be installed on the bogie frame 100. Since the bogie 1000 includes the bogie frame 100, it naturally has all the beneficial effects of the bogie frame 100, which will not be described in detail here.

[0070] Based on the same inventive concept, an embodiment of the present application further provides an assembly method for assembling the above-mentioned bogie frame 100, the method comprising steps S100, S200, S300, S400, S500, S600 and S700.

[0071] S100, positioning marks are processed on both side beam components 110.

[0072] Positioning marks are processed on both side beam assemblies 110 so that the side beam assemblies 110 can be positioned by the positioning marks in the subsequent process to ensure the accuracy of the relative positions of the two side beam assemblies 110. The positioning marks can be punched holes, marks drawn with chalk, or stickers pasted on the side beam assemblies 110, etc., which are not limited in this application.

[0073] Step S100 may include S110 and S120.

[0074] S110, processing the center line in the width direction and the center line in the length direction on the two side beam components 110 respectively, such as Figure 7 Specifically, the width direction center line and the length direction center line are processed on the upper end surface of the side beam assembly 110, and the width direction center line and the length direction center line can be drawn by a three-dimensional marking instrument.

[0075] S120, process two punched holes on the width direction center line with the length direction center line as the symmetrical center line, and the punched holes are positioning marks, such as Figure 7 As shown. The punching hole is a circular hole, which can be a through hole or a blind hole. Two punching holes are processed on each side beam component 110. The two punching holes are both located on the center line in the width direction, and the two punching holes are symmetrical about the center line in the length direction.

[0076] S200, placing the side beam assembly 110, the end beam assembly 120, the first cross beam assembly 130, the traction beam assembly 140 and the second cross beam assembly 150 on the support seat 2200 of the assembled tire 2000 according to relative positions.

[0077] That is, the two side beam assemblies 110 are placed on the support seat 2200 and the two side beam assemblies 110 are arranged opposite to each other, the traction beam assembly 140 is placed on the support seat 2200 and is located between the two side beam assemblies 110, the second cross beam assembly 150 is placed on the support seat 2200 and is located between the traction beam assembly 140 and the side beam assembly 110, the first cross beam assembly 130 is placed on the assembly tire 2000 and is located between the two side beam assemblies 110 and at one end of the traction beam assembly 140, and the end beam is placed on the assembly tire 2000 and is located between the two side beam assemblies 110 and at the other end of the traction beam assembly 140.

[0078] S300 , adjusting the relative positions of the two side beam assemblies 110 according to the positioning marks, and positioning and pressing the side beam assemblies 110 onto the support seat 2200 of the assembled tire 2000 through the pressing piece 2400 of the assembled tire 2000 .

[0079] After the side beam assembly 110, the end beam assembly 120, the first cross beam assembly 130, the traction beam assembly 140 and the second cross beam assembly 150 are initially placed on the support seat 2200 of the assembly tire 2000 according to the relative positions, the relative positions of the two side beam assemblies 110 are accurately adjusted according to the positioning marks so that the spacing and parallelism between the two side beam assemblies 110 meet the design requirements. After the relative positions of the two side beam assemblies 110 are adjusted to meet the design requirements, the pressing member 2400 of the assembly tire 2000 can be controlled to move so that the pressing member 2400 presses the side beam assembly 110 to prevent the side beam assembly 110 from moving in the subsequent process, so as to ensure the relative position of the two side beam assemblies 110 is accurate.

[0080] The relative positions of the two side beam components 110 can be adjusted so that the spacing between the two diagonal punching holes is equal to the set value, so that the relative positions of the two side beam components 110 meet the design requirements. Figure 7 As shown, specifically, the relative positions of the two side beam components 110 are adjusted so that the spacing between the punching holes 1 and 3 is equal to the spacing between the punching holes 2 and 4, and the spacing is equal to the set value. In this way, the four punching holes are enclosed into a rectangle, and the line connecting the punching holes 1 and 2 is parallel to the line connecting the punching holes 3 and 4, so that the center lines of the width direction of the two side beam components 110 are parallel, and the line connecting the punching holes 1 and 4 is parallel to the line connecting the punching holes 2 and 3, so that the center lines of the length direction of the two side beam components 110 are collinear, and then the two ends of the length of the two side beam components 110 are flush. The spacing between the punching holes 1 and 3 is equal to the spacing between the punching holes 2 and 4, and the spacing is equal to the set value, so that the spacing of the center lines of the width direction of the two side beam components 110 meets the set value.

[0081] S400, adjust the relative positions of the end beam assembly 120, the first cross beam assembly 130, the traction beam assembly 140 and the second cross beam assembly 150, and position and press the end beam assembly 120, the first cross beam assembly 130, the traction beam assembly 140 and the second cross beam assembly 150 on the support seat 2200 of the assembly tire 2000 through the clamping piece 2400 of the assembly tire 2000.

[0082] After the side beam assembly 110 is pressed and fixed, the positions of the end beam assembly 120, the first cross beam assembly 130, the traction beam assembly 140 and the second cross beam assembly 150 can be accurately adjusted according to the position of the side beam assembly 110 and the relative positions between the components, so that the relative positions between the side beam assembly 110, the end beam assembly 120, the first cross beam assembly 130, the traction beam assembly 140 and the second cross beam assembly 150 meet the design requirements. After the adjustment is completed, the action of the pressing member 2400 of the assembly tire 2000 can be controlled so that the pressing member 2400 presses the end beam assembly 120, the first cross beam assembly 130, the traction beam assembly 140 and the second cross beam assembly 150, so as to prevent the movement of the pressing end beam assembly 120, the first cross beam assembly 130, the traction beam assembly 140 and the second cross beam assembly 150 in the subsequent process. The end beam assembly 120, the first cross beam assembly 130, the traction beam assembly 140 and the second cross beam assembly 150 can be adjusted separately. After adjusting one assembly, one assembly is pressed, and then the next assembly is adjusted. The end beam assembly 120, the first cross beam assembly 130, the traction beam assembly 140 and the second cross beam assembly 150 can also be adjusted together. After the adjustment is completed, the end beam assembly 120, the first cross beam assembly 130, the traction beam assembly 140 and the second cross beam assembly 150 are pressed together.

[0083] S500, welding the traction beam assembly 140 and the side beam assembly 110, the traction beam assembly 140 and the second cross beam assembly 150, the traction beam assembly 140 and the first cross beam assembly 130, the traction beam assembly 140 and the end beam assembly 120, the first cross beam assembly 130 and the side beam assembly 110, the second cross beam assembly 150 and the side beam assembly 110, the end beam assembly 120 and the side beam assembly 110.

[0084] After step S400 is completed, the side beam assembly 110, the end beam assembly 120, the first cross beam assembly 130, the traction beam assembly 140 and the second cross beam assembly 150 are all pressed by the pressing piece 2400 of the assembly tire 2000, and the relative position relationship of the side beam assembly 110, the end beam assembly 120, the first cross beam assembly 130, the traction beam assembly 140 and the second cross beam assembly 150 meets the design requirements. After pressing, the side beam assembly 110, the end beam assembly 120, the first cross beam assembly 130, the traction beam assembly 140 and the second cross beam assembly 150 can be welded, so that the side beam assembly 110, the end beam assembly 120, the first cross beam assembly 130, the traction beam assembly 140 and the second cross beam assembly 150 are fixed, so that the position relationship of each component of the processed bogie frame 100 meets the design requirements.

[0085] The structures of the side beam assembly 110, the end beam assembly 120, the first cross beam assembly 130, the traction beam assembly 140 and the second cross beam assembly 150 are not limited in the present application. In some embodiments of the present application, the cross-sections of the side beam assembly 110, the end beam assembly 120, the first cross beam assembly 130, the traction beam assembly 140 and the second cross beam assembly 150 are all in the shape of a U-shaped box, which are box-type parts.

[0086] After the side beam assembly 110, the end beam assembly 120, the first cross beam assembly 130, the traction beam assembly 140 and the second cross beam assembly 150 are all pressed onto the support seat 2200, a butt weld and a fillet weld are formed between the two assemblies to be welded.

[0087] Specifically, step S500 includes S510, S520, S530, S540, S550, S560, and S570.

[0088] S510, performing positioning welding on the weld, through which the various components are fixed together to ensure that the relative positions of the various components will not change during the subsequent welding process, thereby facilitating the subsequent welding.

[0089] S520, welding the front butt weld, that is, welding the butt weld that is currently facing upward and can be welded.

[0090] S530, controlling the pressing member 2400 of the assembly tire 2000 to move so that the pressing member 2400 releases the side beam assembly 110, the end beam assembly 120, the first cross beam assembly 130, the traction beam assembly 140 and the second cross beam assembly 150. After the release, the bogie frame 100 can be turned over by a sling or the like.

[0091] S540, horizontally flip the bogie frame 100, and weld the butt weld on the back side. Horizontal flipping means flipping 180°, that is, flipping in a Figure 3 In the state shown, before flipping, the state of the bogie frame 100 is as follows Figure 2 As shown. In step S420, the weld on the back side is located at the lower side and is facing downwards, and cannot be welded in step S520. After the horizontal flipping in step S540, the butt welds that cannot be welded are facing upwards, and these butt welds can be welded. If the butt welds on the back side have been welded in step S520, the butt welds of this part should be cleaned before welding to ensure the welding quality. At this point, the butt welds of the bogie frame 100 have been welded.

[0092] S550, flip the bogie frame 100 90 degrees to make the fillet weld horizontal.

[0093] S560, welding the front fillet weld, that is, welding the fillet weld that is currently facing upward and can be welded.

[0094] S570, flip the bogie frame 100 180 degrees so that the fillet welds that cannot be welded at the bottom in step S560 face upward, and weld these fillet welds, thereby completing the welding of the fillet welds and the butt welds.

[0095] Before welding the butt weld, arc-starting plates can be added at both ends of the butt weld, that is, arc-starting plates can be added at the starting and ending points of the weld to improve the welding quality. In addition, before welding the butt weld, a permanent pad can be set under the groove to enhance the strength and stability of the welded joint.

[0096] In some embodiments, the bogie frame 100 is made of WeldoX960E high-strength low-alloy fine-grain structural steel, which has the characteristics of high strength and good toughness.

[0097] In some embodiments, welding is performed by metal-electrode mixed gas shielded welding, wherein the mixed gas includes Ar and CO2, and Ar:CO2=80%:20%, and the diameter of the welding wire is 1.2 mm.

[0098] In some embodiments, the welding wire is CARBOFIL FK-1000.

[0099] In some embodiments, the bogie frame 100 is connected to the negative electrode (cathode), and the welding gun is connected to the positive electrode (anode), that is, direct current reverse connection, to ensure the stability and welding quality of the welding process.

[0100] In some embodiments, the welding process parameters are: welding current is 210-240A, welding voltage is 22-26V, and welding heat input is ≤0.6KJ / mm.

[0101] The use of the welding process parameters can ensure the quality of the weld. Experimental verification shows that when the material of the bogie frame 100 is WeldoX960E high-strength low-alloy fine-grained structural steel, the quality of the butt welds of the various components of the bogie frame 100 after welding can meet the ultrasonic flaw detection level I standard required by standard NB / T 47013.3 and the magnetic particle flaw detection level I standard required by standard NB / T 47013.4-2015, and the quality of the fillet weld can meet the magnetic particle flaw detection level I standard required by standard NB / T 47013.4-2015.

[0102] In some implementations, welding adopts a multi-layer and multi-pass welding process. Before welding, the welding area is preheated and the preheating temperature is controlled at 80-100°C; during the welding process, the inter-pass temperature is controlled and the inter-pass temperature is controlled at 80-100°C.

[0103] Both butt welds and fillet welds adopt multi-layer and multi-pass welding process. Before welding butt welds and fillet welds, the welding area needs to be preheated, and the interpass temperature needs to be controlled during the welding process. Controlling the preheating temperature at 80-100℃ can reduce the thermal stress and deformation generated during the welding process, improve the fusion quality of the weld metal and the parent material, prevent the generation of welding cracks, and improve the mechanical properties of the welded joint. Through preheating, the welding area can reach a certain temperature, thereby slowing down the cooling rate during welding, which is conducive to the full melting and mixing of the welding materials and ensuring the welding quality. Interpass temperature control can ensure that each layer of the weld is kept in a suitable temperature range before welding the next layer during the multi-layer welding process. Controlling the interpass temperature within 80-100℃ helps to reduce welding stress and deformation, improve the fusion quality and mechanical properties of the weld, and prevent welding defects caused by too high or too low temperature, such as cracks, lack of fusion, etc., to ensure the overall quality and stability of multi-layer welding.

[0104] In some embodiments, the groove gap of the butt weld is 2mm-3mm, arc-starting plates made of WeldoX960E are added at both ends of the butt weld, and a permanent pad made of WeldoX960E is added on the back of the groove.

[0105] In some embodiments, the number of front welding passes of a butt weld with a plate thickness of 12 mm is 4 layers and 7 passes, and the number of front welding passes of a butt weld with a plate thickness of 16 mm is 5 layers and 11 passes. In some embodiments, the weld angle of a fillet weld with a plate thickness of 12 mm is 7 mm, and the number of weld passes is 4 layers and 7 passes. In some embodiments, the weld angle of a fillet weld with a plate thickness of 16 mm is 6 mm, and the number of weld passes is 5 layers and 7 passes.

[0106] S600, after welding is completed, the weld is inspected. Specifically, ultrasonic flaw detection plus magnetic particle flaw detection is used for butt welds, and magnetic particle flaw detection is used for fillet welds to detect whether the welding quality of butt welds and fillet welds is qualified. If the weld quality is unqualified, it is repaired by re-welding method, weld cutting method and other methods until the weld quality is qualified. If the weld quality is unqualified, the weld excess height is removed to be flush with the parent material and the transition is smooth, and the arc starter plate is removed at the same time. After removal, the weld end is ground flat.

[0107] S700, spectrum aging treatment is performed on the weld, and the spectrum aging treatment time is 40 to 45 minutes. Specifically, if the quality of the weld is qualified, spectrum aging treatment is performed to eliminate welding stress and improve the strength and toughness of the bogie frame 100.

[0108] In an embodiment in which the bogie frame 100 includes a lower tie rod seat 170, after step S500 is completed, a three-dimensional marking instrument is used to mark the assembly lines of each lower tie rod seat 170 on the lower end surfaces of the two side beam assemblies 110, and an assembly dimension line corresponding to the side beam assembly 110 is marked on each lower tie rod seat 170, and each lower tie rod seat 170 is assembled with the frame according to the assembly line. After the assembly dimension inspection is passed, welding is performed to fix the lower tie rod seat 170 on the side beam assembly 110.

[0109] In the embodiment where the bogie 1000 includes a reinforcing beam 160, when performing step S200, the reinforcing beam 160 is simultaneously placed between the two side beam components 110, and when performing step S400, the position of the reinforcing beam 160 is adjusted, and when performing step S500, the reinforcing beam 160 is also welded. The reinforcing beam 160 can be supported by the support seat 2200 of the assembly tire 2000, and it can also be supported by a separate support member, which is not limited in the present application.

[0110] like Figure 4 , Figure 5 and Figure 6 As shown, in some embodiments, the assembled tire 2000 includes a base 2100, a support seat 2200, a door frame 2300 and a clamping member 2400. The support seat 2200 is arranged on the base 2100, and is used to support the side beam assembly 110, the end beam assembly 120, the first cross beam assembly 130, the traction beam assembly 140 and the second cross beam assembly 150; the door frame 2300 is installed on the base 2100; the clamping member 2400 is installed on the door frame 2300 and is located between the door frame 2300 and the support seat 2200. The clamping member 2400 can move toward the direction of the support seat 2200 to clamp the side beam assembly 110, the end beam assembly 120, the first cross beam assembly 130, the traction beam assembly 140 and the second cross beam assembly 150 located on the support seat 2200.

[0111] The base 2100 is used to support the door frame 2300 and the support seat 2200, and the door frame 2300 and the support seat 2200 are both fixedly connected to the base 2100. When the assembled tire 2000 is used, the side beam assembly 110, the end beam assembly 120, the first cross beam assembly 130, the traction beam assembly 140 and the second cross beam assembly 150 are all placed on the support seat 2200 and supported by the support seat 2200. The door frame 2300 supports the pressing member 2400, so that the pressing member 2400 is located above the support seat 2200. The pressing member 2400 can move toward the direction of the support seat 2200, and then can press the side beam assembly 110, the end beam assembly 120, the first cross beam assembly 130, the traction beam assembly 140 and the second cross beam assembly 150 located on the support seat 2200.

[0112] In some embodiments, the door frame 2300 includes a first pillar 2310, a second pillar 2320 and a limiting pillar 2330, the lower ends of the first pillar 2310 and the second pillar 2320 are fixedly connected to the base 2100, the clamping piece 2400 is installed on the limiting pillar 2330, the limiting pillar 2330 is located between the first pillar 2310 and the second pillar 2320, one end of the limiting pillar 2330 is rotatably connected to the upper end of the first pillar 2310, and a limiting groove 2320a is provided on the second pillar 2320. The limiting column 2330 has a clamping position located on the support seat 2200 and the other end is located in the limiting groove 2320a, and a hoisting position not located on the support seat 2200; the clamping piece 2400 is installed on the limiting column 2330. That is, the limiting column 2330 can rotate around the first pillar 2310, and the limiting column 2330 can rotate to the compression position where the other end is located in the limiting groove 2320a and is limited by the limiting groove 2320a, and the limiting column 2330 can also rotate to the hoisting position where the other end is located in the limiting groove 2320a, and the limiting column 2330 is not located at any place on the support seat 2200. With this design, before the side beam assembly 110, the end beam assembly 120, etc. are hoisted to the support seat 2200 by hoisting, the limiting column 2330 can be rotated so that the limiting column 2330 is rotated to the hoisting position not located on the support seat 2200, so as to avoid the limiting column 2330 interfering with the side beam assembly 110, the end beam assembly 120, etc., and facilitate the hoisting of the side beam assembly 110, the end beam assembly 120, etc.

[0113] In some embodiments, the door frame 2300 includes a first pillar 2310, a second pillar 2320 and a limiting pillar 2330. The lower ends of the first pillar 2310 and the second pillar 2320 are fixedly connected to the base 2100. The pressing member 2400 is installed on the limiting pillar 2330. The limiting pillar 2330 is located between the first pillar 2310 and the second pillar 2320. The two ends of the limiting pillar 2330 are detachably connected to the upper ends of the first pillar 2310 and the second pillar 2320 by bolt connection or the like. With such a design, before the side beam assembly 110, the end beam assembly 120, etc. are hoisted to the support seat 2200 by hoisting, the limiting pillar 2330 can be removed from the first pillar 2310 and the second pillar 2320 to avoid the limiting pillar 2330 interfering with the side beam assembly 110, the end beam assembly 120, etc., so as to facilitate the hoisting of the side beam assembly 110, the end beam assembly 120, etc.

[0114] In some embodiments, four door frames 2300 are provided, and the four door frames 2300 are respectively located above the end beam assembly 120, the second beam assembly 150, the second connection portion 142, and the first beam assembly 130. One end of the second support column 2320 of the door frame 2300 located above the end beam assembly 120 and the first beam assembly 130 is rotatably connected to the upper end of the first support column 2310, and the other end is located in the limiting groove 2320a of the second support column 2320. Both ends of the second support column 2320 of the door frame 2300 located above the second beam assembly 150 and the second connection portion 142 are detachably connected to the upper end of the first support column 2310 and the upper end of the second support column 2320, respectively.

[0115] In some embodiments, the clamping member 2400 is a hydraulic cylinder, and the side beam assembly 110, the end beam assembly 120, the first cross beam assembly 130, the traction beam assembly 140 and the second cross beam assembly 15 on the support seat 2200 are clamped by the piston rod of the hydraulic cylinder.

[0116] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification.

[0117] In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0118] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A bogie frame, characterized in that: include: Two side beam assemblies (110), the two side beam assemblies (110) are arranged opposite to each other; An end beam assembly (120) is arranged between the two side beam assemblies (110) and connected to the two side beam assemblies (110), and the end beam assembly (120) is used to install a coupler buffer device (300); A first cross beam component (130) is disposed between the two side beam components (110) opposite to the end beam component (120) and is connected to the two side beam components (110); a traction beam assembly (140), arranged between the two side beam assemblies (110) and connected to the two side beam assemblies (110), arranged between the end beam assembly (120) and the first cross beam assembly (130) and connected to the first cross beam assembly (130) and the end beam assembly (120), the traction beam assembly (140) being used to install the lower center plate (200); and, The two second cross beam assemblies (150) are respectively arranged between the two side beam assemblies (110) and the traction beam assembly (140), and are respectively connected to the side beam assemblies (110) and the traction beam assembly (140).

2. The bogie frame according to item 1, characterized in that: The traction beam component (140) comprises: A first connection portion (141) extends along the length direction of the side beam component (110), and two ends of the first connection portion (141) are respectively connected to the end beam component (120) and the first cross beam component (130); and, Two second connection parts (142) are respectively arranged on two opposite sides of the first connection part (141) and are located between the second crossbeam component (150) and the first crossbeam component (130); the two second connection parts (142) are both connected to the first connection part (141) and are respectively connected to the two side beam components (110).

3. The bogie frame according to claim 1 or 2, characterized in that: The bogie frame (100) further comprises: A reinforcing beam (160) is arranged between the two side beam components (110) and is located on a side of the first cross beam component (130) away from the traction beam component (140). The reinforcing beam (160) is connected to the two side beam components (110).

4. A method for assembling a bogie frame according to any one of claims 1 to 3, characterized in that: The assembly method of the bogie frame (100) comprises: Processing positioning marks on both of the side beam components (110); Placing the side beam assembly (110), the end beam assembly (120), the first cross beam assembly (130), the traction beam assembly (140) and the second cross beam assembly (150) on a support seat (2200) of an assembly tire (2000) according to relative positions; The relative positions of the two side beam assemblies (110) are adjusted according to the positioning marks, and the side beam assemblies (110) are positioned and pressed onto the support seat (2200) of the assembly tire (2000) by means of the pressing member (2400) of the assembly tire (2000); Adjusting the relative positions of the end beam assembly (120), the first cross beam assembly (130), the traction beam assembly (140) and the second cross beam assembly (150), and positioning and pressing the end beam assembly (120), the first cross beam assembly (130), the traction beam assembly (140) and the second cross beam assembly (150) on the support seat (2200) of the assembly tire (2000) through the pressing piece (2400) of the assembly tire (2000); The traction beam assembly (140) and the side beam assembly (110), the traction beam assembly (140) and the second cross beam assembly (150), the traction beam assembly (140) and the first cross beam assembly (130), the traction beam assembly (140) and the end beam assembly (120), the first cross beam assembly (130) and the side beam assembly (110), the second cross beam assembly (150) and the side beam assembly (110), and the end beam assembly (120) and the side beam assembly (110) are welded.

5. The assembly method according to claim 4, characterized in that: The processing of positioning marks on both of the side beam components (110) includes: Processing the center line in the width direction and the center line in the length direction on the two side beam components (110) respectively; Two punched holes are processed on the width direction center line with the length direction center line as the symmetrical center line, and the punched holes are the positioning marks.

6. The assembly method according to claim 5, characterized in that: The step of adjusting the relative positions of the two side beam components (110) according to the positioning mark comprises: The relative positions of the two side beam components (110) are adjusted so that the spacings between the two groups of punched holes located on the diagonal lines are equal to the set value.

7. The assembly method according to claim 4, characterized in that: The assembled tire (2000) comprises: Base(2100); A support seat (2200) is disposed on the base (2100) and is used to support the side beam assembly (110), the end beam assembly (120), the first cross beam assembly (130), the traction beam assembly (140) and the second cross beam assembly (150); A door frame (2300) mounted on the base (2100); A clamping member (2400) is installed on the door frame (2300) and is located between the door frame (2300) and the support seat (2200). The clamping member (2400) can move toward the support seat (2200) to clamp the side beam assembly (110), the end beam assembly (120), the first cross beam assembly (130), the traction beam assembly (140) and the second cross beam assembly (150) located on the support seat (2200).

8. The assembly method according to claim 4, characterized in that: The welding adopts metal-electrode mixed gas shielded welding, wherein the mixed gas includes Ar and CO2, Ar:CO2=80%:20%, and the diameter of the welding wire is 1.2 mm.

9. The assembly method according to claim 4, characterized in that: The welding process parameters are: welding current is 210~240A, welding voltage is 22~26V, and welding heat input is ≤0.6KJ / mm.

10. The assembly method according to claim 4, characterized in that: The welding adopts a multi-layer and multi-pass welding process. Before welding, the welding area is preheated and the preheating temperature is controlled at 80-100°C. During the welding process, the inter-pass temperature is controlled and the inter-pass temperature is controlled at 80-100°C.

11. The assembly method according to claim 4, characterized in that: The assembly method further comprises: performing spectrum aging treatment on the weld after welding, and the spectrum aging treatment time is 40 to 45 minutes.

12. A bogie, characterized in that: A bogie frame (100) comprising any one of claims 1-3.

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