A device suitable for assembling a motor train unit axle box swivel arm node

Abstract

The utility model provides a kind of device suitable for EMU axle box swivel arm node assembly, including rack, material moving mechanism, clamping turnover mechanism and assembly mechanism;Material moving mechanism is used to move and send swivel arm body towards or away from assembly mechanism;Assembly mechanism is used to compress swivel arm node and swivel arm front cover to swivel arm body and assemble;Clamping turnover mechanism is used to clamp and rotate angle after swivel arm body after assembly.The swivel arm node of the utility model is completed after assembly, and swivel arm body can be operated clamping turnover mechanism and be turned from horizontal to vertical state, so that the two bolts and its stop washer originally located below are turned to side and upwards, at this time, worker can conveniently carry out the two bolts and iron beating operation, without long time bending waist.Both horizontal and vertical operation postures during node assembly process can be realized, and swivel arm node assembly and iron beating two processes are compatible, and labor intensity is reduced.

Description

Technical Field

[0001] This utility model relates to the field of swivel arm node assembly technology, and in particular to a device suitable for assembling swivel arm nodes of axle boxes in high-speed trains. Background Technology

[0002] The axial swing arm node of the EMU includes the swing arm body (a metal structure main body, one end of which is connected to the frame, and the other end is connected to the wheelset axle box through the swing arm node), the swing arm front cover (which together with the swing arm body forms a closed cavity, fixes the position of the swing arm node and provides protection), and the swing arm node (a metal core shaft is embedded in a rubber layer to enhance the node's rigidity and durability).

[0003] During the assembly of the original EMU axial boom joint, the boom body had to be manually hoisted onto the joint pressing fixture. The boom joint then had to be manually fixed to the fixture using joint clamping bolts. Due to the large gap between the joint holes and the bolts, manual adjustment and positioning were quite troublesome. After the joint assembly was completed, the joint clamping bolts had to be manually removed before the boom could be hoisted onto a pallet for the iron-cladding of the locking shims. Because the boom body was heavy, manual hoisting was time-consuming, labor-intensive, and posed safety hazards. The iron-cladding work on the pallet did not provide effective fixation of the boom, making it prone to bumps and injuries. Furthermore, workers had to work in a bent-over, floor-like position for extended periods, which did not comply with operational standards.

[0004] For example, Chinese patent CN103624541A, published on March 12, 2014, and Chinese patent CN109108866A, published on January 1, 2019, both achieve convenient connection by fixing the swing arm body and pressing the swing arm front cover. In this type of patent technology, after the swing arm front cover and the swing arm body are tightened with four bolts, it is obviously inconvenient to perform the iron-hammering operation on the two lower bolts (out of four bolts, two at the top and two at the bottom). The aforementioned bending operation method is required, and the swing arm is not effectively fixed, which can easily cause bumps and damage to the swing arm body. Utility Model Content

[0005] The purpose of this utility model is to provide a device suitable for assembling the axle box swing arm node of a high-speed train, which can conveniently and safely carry out the iron-smashing operation.

[0006] This utility model provides a device suitable for assembling the axle box swing arm node of a high-speed train, including a frame, a material transfer mechanism, a clamping and flipping mechanism, and an assembly mechanism. The material transfer mechanism, the clamping and flipping mechanism, and the assembly mechanism are mounted on the frame. The material transfer mechanism is used to move the swing arm body toward or away from the assembly mechanism. The assembly mechanism is used to press the swing arm node and the swing arm front cover tightly against the swing arm body for assembly. The clamping and flipping mechanism is used to clamp the assembled swing arm body and rotate it by an angle.

[0007] Furthermore, the clamping and flipping mechanism includes an upper clamping and flipping device and a lower clamping device. When the upper clamping and flipping device clamps the rotating arm body and flips the rotating arm front cover downward, the lower clamping device clamps the rotating arm front cover.

[0008] Furthermore, the upper clamping and flipping device includes a turntable, a rotation drive device, and an upper clamping block. The upper clamping block is mounted on the turntable and clamps or releases the rotating arm body. The rotation drive device drives the turntable to rotate.

[0009] Furthermore, the lower clamping device includes a lower clamping block and a second driving device, the second driving device being used to drive the lower clamping block to move toward or away from the rotating arm front cover.

[0010] Furthermore, the material transfer mechanism includes a slide rail, a slide table, and a linear drive device. The slide table is slidably mounted on the slide rail via the linear drive device, and the slide table is provided with a positioning device for clamping the rotating arm body.

[0011] Furthermore, the assembly mechanism includes a node clamping fixture and a front cover clamping fixture. The node clamping fixture is used to maintain the position of the swing arm node, and the front cover clamping fixture is used to clamp the swing arm front cover to the swing arm body.

[0012] Furthermore, the node clamping fixture includes a support member and a pressure head. The support member is supported below both ends of the rotating arm node, and the pressure head presses against both ends of the rotating arm node.

[0013] Furthermore, the support member includes a connecting plate and two side plates, the connecting plate being connected between the two side plates, the top of the side plates being provided with a stepped groove, and the pressure head being located above the stepped groove.

[0014] Furthermore, the front cover clamping fixture includes a clamping head and a first driving device, the first driving device being used to drive the clamping head to move toward or away from the node clamping fixture.

[0015] Furthermore, it also includes a control box, which is equipped with a control unit connected to the material transfer mechanism, the assembly mechanism and the clamping and flipping mechanism.

[0016] The technical solution of this utility model uses a material transfer mechanism to move the boom body, and after assembly at the assembly mechanism, the locking washers of the two upper bolts are first hammered with iron. Then, the clamping and flipping mechanism is operated to flip the boom body from a horizontal to a vertical position. The two bolts (and their locking washers) originally located below are flipped to the side and facing upwards. At this point, workers can easily hammer the iron onto these two bolts without having to bend over for a long time. Furthermore, the clamping and flipping mechanism's fixation of the boom body prevents damage from impacts during the hammering process. Thus, this device fulfills the requirement of both horizontal and vertical operating postures during the assembly of the EMU boom, accommodating both boom assembly and iron hammering processes, saving the lifting steps in the original operation, and reducing the labor intensity of manual labor. Attached Figure Description

[0017] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the working state of this utility model;

[0020] Figure 3 This is a schematic diagram of the material transfer mechanism of this utility model;

[0021] Figure 4 This is a schematic diagram of the material transfer mechanism and the rotating arm body of this utility model;

[0022] Figure 5 This is a schematic diagram of the clamping and flipping mechanism of this utility model;

[0023] Figure 6 This is a schematic diagram of the assembly mechanism of this utility model;

[0024] Figure 7 This is a schematic diagram of the frame and control box of this utility model;

[0025] Figure 8 This is a schematic diagram of the overall structure of this utility model from another perspective;

[0026] Figure 9 This is a schematic diagram of the horizontal state of the nodes after assembly of this utility model;

[0027] Figure 10This is a schematic diagram of the node of this utility model flipped to a vertical state.

[0028] Explanation of reference numerals in the attached figures:

[0029] 1-Rack;

[0030] 2-Material transfer mechanism; 21-Slide rail; 22-Slide table; 23-Linear drive device; 231-Motor; 232-Lead screw; 24-Positioning device; 241-Positioning block; 242-Clamping cylinder;

[0031] 3-Clamping and flipping mechanism; 31-Upper clamping and flipping device; 311-Turntable; 312-Rotation drive device; 313-Upper clamping block; 32-Lower clamping device; 321-Lower clamping block; 322-Second drive device;

[0032] 4-Assembly mechanism; 41-Node clamping fixture; 411-Support component; 4111-Connecting plate; 4112-Side plate; 4113-Step groove; 412-Pressure head; 42-Front cover clamping fixture; 421-Pressure head; 422-First drive device; 43-Upper mounting plate; 44-Lower mounting plate; 45-Lifting cylinder; 46-Guide shaft;

[0033] 5-Control box; 51-Control unit;

[0034] 61-Swing arm body; 62-Swing arm front cover; 63-Swing arm node; 64-Upper bolt; 65-Lower bolt. Detailed Implementation

[0035] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0036] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0037] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified. Furthermore, the terms "installed," "connected," and "linked" should be interpreted broadly; for example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0038] Example 1

[0039] like Figures 1-10 As shown, this utility model provides a device suitable for assembling the axle box swing arm node of a high-speed train, including a frame 1, a material transfer mechanism 2, a clamping and flipping mechanism 3, and an assembly mechanism 4. The material transfer mechanism 2, the clamping and flipping mechanism 3, and the assembly mechanism 4 are mounted on the frame 1. The material transfer mechanism 2 is used to move the swing arm body 61 toward or away from the assembly mechanism 4. The assembly mechanism 4 is used to press the swing arm node 63 and the swing arm front cover 62 onto the swing arm body 61 for assembly. The clamping and flipping mechanism 3 is used to clamp the assembled swing arm body 61 and rotate it by an angle.

[0040] Specifically, the rotating arm body 61 is first fixed horizontally, one end is detachably fixed to the material transfer mechanism 2, and the other end is used to assemble with the rotating arm front cover 62. As the moving mechanism moves, the rotating arm body 61 is moved to the assembly mechanism 4. During the process, the material transfer mechanism 2 automatically positions the loading rotating arm to improve the positioning accuracy of the rotating arm during the assembly process.

[0041] During the assembly process of the assembly mechanism 4, the swing arm node 63 is first placed in the semi-circular shell at the end of the swing arm body 61. Then, the swing arm front cover 62 is fastened onto the swing arm body 61 to cover the swing arm node 63. Next, the clamping head 421 of the front cover clamping fixture 42 is extended toward the node clamping fixture 41 until the swing arm front cover 62 is clamped. Then, two bolts at the top and two at the bottom are inserted into the bolt holes of the swing arm body 61 and the swing arm front cover 62. The other end of the bolt is put into a stop washer and the nut is tightened to connect.

[0042] The clamping and flipping mechanism 3 is used to rotate the assembled swing arm 90 degrees clockwise (from horizontal to vertical). At this time, the two bolts 65 (and their locking washers) that were originally located at the bottom are flipped to the side and facing upwards, making it convenient for manual labor to perform the iron-pressing operation. Compared with the original method of manually lifting the assembled swing arm onto the pallet before performing the iron-pressing operation, or the method of bending over for a long time to perform the iron-pressing operation, this effectively reduces the labor intensity.

[0043] After the operation is completed, the clamping and flipping mechanism 3 rotates the arm back to its original position (horizontal). The material transfer mechanism 2 then transports the arm back to the unloading position in the opposite direction. The arm can then be lifted away by a robot or manually.

[0044] Example 2

[0045] The clamping and flipping mechanism 3 includes an upper clamping and flipping device 31 and a lower clamping device 32. When the upper clamping and flipping device 31 clamps the rotating arm body 61 and flips the rotating arm front cover 62 downwards, the lower clamping device 32 clamps the rotating arm front cover 62. The upper clamping and flipping device 31 includes a turntable 311, a rotation drive device 312, and an upper clamping block 313. The upper clamping block 313 is mounted on the turntable 311 and clamps or releases the rotating arm body 61. The rotation drive device 312 drives the turntable 311 to rotate. The lower clamping device 32 includes a lower clamping block 321 and a second drive device 322. The second drive device 322 is used to drive the lower clamping block 321 to move toward or away from the rotating arm front cover 62.

[0046] Specifically, there is one set of clamping and flipping mechanism 3 on each of the left and right sides, and the two sets together form a clamping method on both sides. After the assembly is completed at the assembly mechanism 4, the stop washers of the two upper bolts 64 are first hammered with iron. After completion, the upper clamping and flipping device 31 is activated to clamp the rotating arm. At the same time, the positioning device 24 on the material transfer mechanism 2 is released. Then the upper clamping and flipping device 31 can start to carry the rotating arm (horizontal state) to flip. When it is flipped to the middle position (45 degrees), the slide table 22 of the material transfer mechanism 2 is operated to return and leave. The upper clamping and flipping device 31 carries the rotating arm to continue to flip to 90 degrees (vertical state). At this time, the front cover 62 of the rotating arm is flipped to the bottom. Then the lower clamping device 32 is activated to clamp the front cover 62 of the rotating arm from below, realizing clamping at both the top and bottom, and completely fixing the rotating arm. The two bolts 65 (and their stop washers) that were originally located at the bottom are flipped to the side and facing upward. At this time, the worker can easily carry out the hammering and ironing of the two bolts without having to bend over for a long time. Furthermore, the clamping and flipping mechanism 3 can fix the rotating arm body 61 to prevent it from being bumped or damaged when the iron is smashed.

[0047] The upper clamping and tilting device 31 includes a turntable 311 and a rotation drive device 312 that drives the turntable 311 to rotate. In this device, the turntable 311 can rotate back and forth within a 90-degree range. The rotation drive device 312 can be an electric push rod connected to the rotary shaft. The upper clamping block 313 has a V-shaped structure and is controlled by a cylinder or hydraulic cylinder to perform extension and retraction to clamp or release. When the rotating arm is sent to the tilting position by the material transfer mechanism 2, the left / right clamping cylinders extend simultaneously, the left / right upper clamping blocks 313 clamp the rotating arm, and then the electric push rod extends to rotate the rotary shaft 90 degrees before stopping.

[0048] The lower clamping device 32 includes a clamping cylinder 242 as a second driving device 322, and the lower clamping block 321 is connected to the telescopic end of the clamping cylinder 242 to clamp or release.

[0049] Example 3

[0050] The material transfer mechanism 2 includes a slide rail 21, a slide table 22 and a linear drive device 23. The slide table 22 is slidably mounted on the slide rail 21 via the linear drive device 23. The slide table 22 is provided with a positioning device 24 for clamping the rotating arm body 61.

[0051] Specifically, the positioning device 24 includes two side positioning blocks 241 and a clamping cylinder 242. The material transfer mechanism 2 positions the rotating arm body 61 by moving the two side positioning blocks 241, and clamps or releases the rotating arm body 61 by clamping the clamping cylinder 242, thus preventing the rotating arm from tipping over during transport and improving the positioning accuracy of the rotating arm during assembly. The linear drive device 23 uses a servo motor 231, a lead screw 232, and a slide rail 21 to meet the operating requirements of the rotating arm at different positions.

[0052] Example 4

[0053] Assembly mechanism 4 includes a node clamping fixture 41 and a front cover clamping fixture 42. The node clamping fixture 41 is used to hold the position of the swing arm node 63, and the front cover clamping fixture 42 is used to clamp the swing arm front cover 62 to the swing arm body 61. The node clamping fixture 41 includes a support member 411 and a pressure head 412. The support member 411 is supported below both ends of the swing arm node 63, and the pressure head 412 is pressed above both ends of the swing arm node 63. The support member 411 includes a connecting plate 4111 and two side plates 4112. The connecting plate 4111 is connected between the two side plates 4112. The top of the side plates 4112 is provided with a stepped groove 4113, and the pressure head 412 is located above the stepped groove 4113. The front cover clamping fixture 42 includes a clamping head 421 and a first driving device 422. The first driving device 422 is used to drive the clamping head 421 to move toward or away from the node clamping fixture 41.

[0054] Specifically, the assembly mechanism 4 includes an upper mounting plate 43 and a lower mounting plate 44. The node clamping fixture 41 and the front cover clamping fixture 42 are both mounted on the upper mounting plate 43. A lifting cylinder 45 is provided between the upper and lower mounting plates 44 to adjust the height. The upper mounting plate 43 is lowered by the lifting cylinder 45 to avoid the subsequent rotating arm that needs to be flipped. The upper mounting plate 43 is fixed on four guide shafts 46 to ensure the positioning accuracy of the assembly mechanism 4.

[0055] In the node clamping fixture 41, the two side support members 411 are plate-shaped pieces with a stepped groove 4113 on the top. The bottom surface of the stepped groove 4113 is used to support the two ends of the hinge node 63, and the back surface of the stepped groove 4113 is used to prevent the two ends of the hinge node 63 from rolling backward. During assembly, the bottom surface of the semi-circular shell of the hinge body 61 is supported by the connecting plate 4111.

[0056] In the front cover clamping fixture 42, the node clamping cylinder serves as the first driving device 422. The first driving device 422 drives the clamping head 421 to move toward or away from the node clamping fixture 41. Under the action of the node clamping cylinder, the rotating arm node 63 is automatically clamped. After the node is assembled, the node clamping cylinder is released, saving the step of using node fastening bolts in the original manual operation, thus improving the accuracy and efficiency of the operation.

[0057] Example 5

[0058] It also includes a control box 5, which is equipped with a control unit 51 connected to the material transfer mechanism 2, the assembly mechanism 4 and the clamping and flipping mechanism 3.

[0059] Specifically, the control box 5 can be configured to allow the PLC to communicate with the robot, enabling the robot to perform loading and unloading actions on the rotating arm, thereby improving the level of automation and increasing work efficiency. In addition, the PLC can be connected to the control terminals of the drive units of the material transfer mechanism 2, the clamping and flipping mechanism 3, and the assembly mechanism 4. The control box 5 is equipped with several control buttons as control units 51, allowing different buttons to control the sequential actions of each module.

[0060] The working method and principle of this utility model:

[0061] Before assembly: The two positioning blocks 241 of the transfer mechanism 2 clamp the rotating arm body 61 by the clamping cylinder 242 facing each other. Then, the linear drive device 23 starts the drive slide 22 to move along the slide rail 21 to the assembly mechanism 4. When the end semi-circular shell of the rotating arm body 61 reaches the node clamping fixture 41, it stops. Then, the rotating arm node 63 is placed into the end semi-circular shell of the rotating arm body 61. Then, the rotating arm front cover 62 is fastened on the rotating arm body 61 to cover the rotating arm node 63. Then, the clamping head 421 of the front cover clamping fixture 42 is operated to extend towards the node clamping fixture 41 until the rotating arm front cover 62 is clamped. Then, two bolts (64, 65) on the top and bottom are inserted into the bolt holes of the rotating arm body 61 and the rotating arm front cover 62. The other end of the bolt is put into the stop washer and the nut is tightened to connect, and the assembly is completed.

[0062] After assembly, the iron-cladding process is performed: After assembly, the locking washers of the two upper bolts 64 are first clashed. After completion, the upper clamping and flipping device 31 is activated to clamp the rotating arm. At the same time, the positioning device 24 on the material transfer mechanism 2 is released. Then, the upper clamping and flipping device 31 can start to carry the rotating arm (horizontally horizontal) and flip it to 90 degrees (vertically vertical). At this time, the front cover 62 of the rotating arm flips to the bottom. Then, the lower clamping device 32 is activated to clamp the front cover 62 of the rotating arm from below, achieving clamping at both the top and bottom points and completely fixing the rotating arm. At this time, the two bolts 65 (and their locking washers) that were originally located at the bottom are flipped to the side and facing upwards. At this time, the workers can easily perform the iron-cladding operation on the two bolts 65, saving the labor that was originally required to lift the assembled rotating arm onto the pallet before performing the iron-cladding operation. After the operation is completed, the clamping and flipping device will rotate the arm back to its original position, and the material transfer mechanism 2 will transport the arm back to the unloading position in the opposite direction. Then, the arm can be lifted away by a robot or manually.

[0063] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A device suitable for assembling the axle box swing arm node of a high-speed train, characterized in that, It includes a frame, a material transfer mechanism, a clamping and flipping mechanism, and an assembly mechanism, wherein the material transfer mechanism, the clamping and flipping mechanism, and the assembly mechanism are mounted on the frame; The material transfer mechanism is used to move the rotating arm body toward or away from the assembly mechanism; The assembly mechanism is used to press the swing arm node and the swing arm front cover onto the swing arm body for assembly. The clamping and flipping mechanism is used to clamp the assembled rotating arm body and rotate it by an angle.

2. The device for assembling the axle box swing arm node of a high-speed train according to claim 1, characterized in that, The clamping and flipping mechanism includes an upper clamping and flipping device and a lower clamping device. When the upper clamping and flipping device clamps the rotating arm body and flips the front cover of the rotating arm downward, the lower clamping device clamps the front cover of the rotating arm.

3. The device for assembling the axle box swing arm node of a high-speed train according to claim 2, characterized in that, The upper clamping and flipping device includes a turntable, a rotation drive device, and an upper clamping block. The upper clamping block is installed on the turntable and clamps or releases the rotating arm body. The rotation drive device drives the turntable to rotate.

4. The device for assembling the axle box swing arm node of a high-speed train according to claim 3, characterized in that, The lower clamping device includes a lower clamping block and a second driving device, the second driving device being used to drive the lower clamping block to move toward or away from the rotating arm front cover.

5. The device for assembling the axle box swing arm node of a high-speed train according to claim 1, characterized in that, The material transfer mechanism includes a slide rail, a slide table, and a linear drive device. The slide table is slidably mounted on the slide rail via the linear drive device, and the slide table is provided with a positioning device for clamping the rotating arm body.

6. The device for assembling the axle box swing arm node of a high-speed train according to claim 1, characterized in that, The assembly mechanism includes a node clamping fixture and a front cover clamping fixture. The node clamping fixture is used to maintain the position of the swing arm node, and the front cover clamping fixture is used to clamp the swing arm front cover to the swing arm body.

7. The device for assembling the axle box swing arm node of a high-speed train according to claim 6, characterized in that, The node clamping fixture includes a support member and a pressure head. The support member is supported below both ends of the rotating arm node, and the pressure head is pressed on both ends of the rotating arm node.

8. The device for assembling the axle box swing arm node of a high-speed train according to claim 7, characterized in that, The support includes a connecting plate and two side plates. The connecting plate is connected between the two side plates. The top of the side plates is provided with a stepped groove, and the pressure head is located above the stepped groove.

9. The device for assembling the axle box swing arm node of a high-speed train according to claim 6, characterized in that, The front cover clamping fixture includes a clamping head and a first driving device, the first driving device being used to drive the clamping head to move toward or away from the node clamping fixture.

10. The device for assembling the axle box swing arm node of a high-speed train according to claim 1, characterized in that, It also includes a control box, which has a control unit connected to the material transfer mechanism, the assembly mechanism and the clamping and flipping mechanism.

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