A traction rod bearing press fitting tool for a magnetic levitation vehicle running gear

Abstract

This utility model relates to the field of magnetic levitation vehicle technology and aims to solve the problems of high tooling costs, high operator skill requirements, and low assembly efficiency in the prior art when pressing different rubber joint bearings at both ends of a traction rod. It provides a tooling for pressing bearings on traction rods of magnetic levitation vehicles, including a press bed with recessed holes. An adapter block is arranged above the press bed, and a limiting hole is provided on the adapter block. The adapter block engages with the bearing through the limiting hole or with the bearing through an axial positioning block to limit the bearing's direction. A punch is arranged above the adapter block. During pressing, pressure is applied to the adapter block through the punch, and then to the bearing through the adapter block. This utility model allows the pressing of bearings at both ends of the traction rod to be completed on the same tooling, and meets the requirements for the relative positions of two different rubber joint bearings. It is low in cost, requires less skilled operators, has a high pass rate, and high pressing efficiency.

Description

Technical Field

[0001] This utility model relates to the field of magnetic levitation vehicle technology, and more specifically, to a tooling for pressing traction rod bearings in the running gear of a magnetic levitation vehicle. Background Technology

[0002] As a core component of maglev vehicles, the running gear, particularly the traction rods used in its articulated system, is a crucial load-bearing component. Two different types of rubber spherical plain bearings are installed at both ends of the traction rod to ensure its connectability and freedom of movement. Due to their different structures, these bearings typically require different press-fitting fixtures to assemble onto the traction rod. Manufacturing various types of fixtures increases costs and places high demands on operators. Furthermore, switching fixtures is necessary when installing the two different bearings at both ends of the traction rod, resulting in low assembly efficiency. Utility Model Content

[0003] This utility model aims to provide a tooling for pressing bearings of traction rods in the running gear of magnetic levitation vehicles, in order to solve the problems in the prior art where different tooling is required when pressing different rubber joint bearings at both ends of the traction rod, resulting in high tooling manufacturing costs, high operator requirements, and low assembly efficiency.

[0004] This utility model is achieved using the following technical solution:

[0005] This utility model provides a traction rod bearing press-fitting fixture for the running gear of a magnetic levitation vehicle, including a press bed with a recessed hole, an adapter block arranged above the press bed, and a limiting hole on the adapter block. The adapter block cooperates with the bearing through the limiting hole or cooperates with the bearing through an axial positioning block to limit the direction of the bearing.

[0006] A punch is arranged above the adapter block. During pressing, pressure is applied to the adapter block through the punch, and then to the bearing through the adapter block.

[0007] Using the above structure, different types of bearings can be press-fitted at both ends of the traction rod. For bearing one, which includes an inner ring and an outer ring, the adapter block engages with the inner ring of bearing one through an axial positioning block to limit the direction of bearing one. Then, the pressure is transmitted to the adapter block through the punch, and then to bearing one through the adapter block, pressing bearing one, which is located at the press-fitting end of the traction rod, into the traction rod. During press-fitting, the press-fitting end of the traction rod is placed on the press bed. For bearing two, which does not include an inner ring, protruding positioning connecting blocks are formed on both sides of its outer ring. The adapter block engages with bearing two through the limiting hole to limit the direction of bearing two. Then, the pressure is transmitted to the adapter block through the punch, and then to bearing two through the adapter block, pressing bearing two, which is located at the press-fitting end of the traction rod, into the traction rod.

[0008] This utility model presents a cleverly designed tooling for pressing bearings on the traction rod of a maglev vehicle's running gear. It allows the pressing of bearings at both ends of the traction rod to be completed on the same tooling, while also meeting the relative positional requirements of two different types of rubber joint bearings. Furthermore, this tooling is inexpensive, reducing costs; it is easy to use; it requires minimal operator skill; it produces a high rate of qualified finished products; and it boasts high pressing efficiency.

[0009] As a preferred technical solution:

[0010] The axial positioning block includes a positioning rod and a positioning head. The positioning head is fixedly connected to one end of the positioning rod. The positioning rod is used to insert into the inner ring of the bearing. A flat key is formed on the side of the positioning rod, and the flat key is adapted to the keyway on the inner ring of the bearing.

[0011] As a preferred technical solution:

[0012] The shape of the positioning head is adapted to the shape of the limiting hole, and the positioning head can be inserted into the limiting hole.

[0013] As a preferred technical solution:

[0014] The limiting hole is a through hole.

[0015] As a preferred technical solution:

[0016] The positioning head has a square cross-sectional shape, and the limiting hole is a square hole.

[0017] As a preferred technical solution:

[0018] The cross-sectional shape of the positioning connecting block on both sides of the bearing is adapted to the shape of the limiting hole. The limiting hole is used for the positioning connecting block to pass through and to limit the direction of the bearing.

[0019] As a preferred technical solution:

[0020] The cross-sectional shape of the positioning connecting block is square.

[0021] As a preferred technical solution:

[0022] The punch has a hollow interior.

[0023] As a preferred technical solution:

[0024] The traction rod bearing press-fitting fixture for the running gear of a magnetic levitation vehicle also includes a stop block arranged on the side of the press. The stop block has a guide groove, and the adapter block has a guide rod on its outer side. The guide rod is slidably connected in the guide groove, and the adapter block slides up and down along the guide groove via the guide rod.

[0025] As a preferred technical solution:

[0026] The traction rod bearing press-fitting fixture for the running gear of a magnetic levitation vehicle also includes a base plate, the press is fixedly mounted on the base plate, and the stop blocks are arranged on three sides of the press, and the stop blocks are also fixedly mounted on the base plate.

[0027] The adapter block has three guide rods on its outer side, and the three guide rods are slidably disposed in the guide grooves on the three stop blocks.

[0028] As a preferred technical solution:

[0029] A support block is fixedly installed on the base plate. The support block is used to support the traction rod and is arranged on the other side of the press.

[0030] As a preferred technical solution:

[0031] The top surface of the support block is provided with an arc-shaped groove.

[0032] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0033] This utility model presents a cleverly designed tooling for pressing bearings on the traction rod of a maglev vehicle's running gear. It allows the pressing of bearings at both ends of the traction rod to be completed on the same tooling, while also meeting the relative positional requirements of two different types of rubber joint bearings. Furthermore, this tooling is inexpensive, reducing costs; it is easy to use; it requires minimal operator skill; it produces a high rate of qualified finished products; and it boasts high pressing efficiency. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the structure of the traction rod bearing press-fitting fixture for the running gear of a magnetic levitation vehicle as described in this utility model.

[0035] Figure 2 This is a schematic diagram of the structure of the adapter block described in this utility model.

[0036] Figure 3 This is a schematic diagram of the axial positioning block described in this utility model.

[0037] Figure 4 This is a schematic diagram of the press-fitting of the bearing described in this utility model.

[0038] Figure 5 for Figure 4 Enlarged diagram of point A in the middle.

[0039] Figure 6 This is a schematic diagram of the press-fitting of the bearing 2 described in this utility model.

[0040] Icons: 1-Base plate, 2-Support block, 201-Arc groove, 3-Stop block, 301-Guide groove, 4-Pressing machine, 401-Concave hole, 5-Axial positioning block, 501-Positioning rod, 502-Positioning head, 503-Flat key, 6-Adapter block, 601-Limiting hole, 602-Guide rod, 7-Punch, 8-Bearing 1, 801-Keyway, 9-Bearing 2, 901-Positioning connecting block, 10-Traction rod. Detailed Implementation

[0041] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. 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.

[0042] Example 1

[0043] like Figures 1-3 As shown, this embodiment proposes a press-fitting fixture for the traction rod bearings of a maglev vehicle's running gear. This fixture is a production process equipment designed specifically for the traction rod 10. The traction rod 10 has rubber spherical bearings of different structures and with specific relative positioning requirements installed at both ends: bearing 8 and bearing 9. Bearing 8 includes an inner ring and an outer ring. The inner ring has a keyway 801 for shaft positioning and force transmission. Bearing 9 has no inner ring; its outer ring has protruding square positioning connecting blocks 901 on both sides, which are integral with the outer ring. The press-fitting angles of bearing 8 and bearing 9 are strictly defined, and their relative positions are crucial for subsequent assembly and performance.

[0044] The traction rod bearing press-fitting fixture for the running gear of a magnetic levitation vehicle includes a base plate 1, on which a support block 2 is fixedly installed. The top surface of the support block 2 is provided with an arc-shaped groove 201 for placing the traction rod 10. A press 4 is also fixedly installed on the base plate 1. The press 4 is arranged opposite to the support block 2. The press 4 has a recessed hole 401 to prevent the bearing 9 from interfering with the press 4.

[0045] A stop block 3 is also fixedly installed on the base plate 1. The stop block 3 has a guide groove 301 and is arranged on the side of the press 4.

[0046] In this embodiment, the three stop blocks 3 are respectively arranged on the three sides of the press 4, and the support block 2 is located on the other side of the press 4. The guide groove 301 is formed in the upper middle position of the stop block 3, and plays a positioning and guiding role for the adapter block 6 during the pressing process.

[0047] An adapter block 6 is arranged above the press 4. The adapter block 6 has a guide rod 602 on its outer side. The guide rod 602 is slidably connected in the guide groove 301. The adapter block 6 slides up and down along the guide groove 301 through the guide rod 602, moving closer to or away from the press 4.

[0048] In this embodiment, the adapter block 6 has three guide rods 602 on its outer side. The three guide rods 602 are located in different directions and are slidably disposed in the guide grooves 301 on the three stop blocks 3, so as to ensure the stability of the adapter block 6 sliding up and down.

[0049] A punch 7 is arranged above the adapter block 6. During pressing, the punch 7 abuts against the adapter block 6, and the pressure is transmitted to the adapter block 6 through the punch 7. The adapter block 6 abuts against the bearing, pressing the bearing into the pressing hole on the traction rod 10.

[0050] The traction rod bearing press-fitting fixture for the running gear of a magnetic levitation vehicle further includes an axial positioning block 5. The axial positioning block 5 includes a positioning rod 501 and a positioning head 502. The positioning head 502 is fixedly connected to the upper end of the positioning rod 501. The positioning rod 501 and the positioning head 502 can be integrally formed structural components. The positioning rod 501 is used to insert into the inner ring of the bearing 8, and a flat key 503 is formed on the side of the positioning rod 501. The flat key 503 is adapted to the keyway 801 on the inner ring of the bearing 8.

[0051] When installing the bearing 8, the axial positioning block 5 is required, and the axial positioning block 5 is located below the adapter block 6.

[0052] The adapter block 6 has a limiting hole 601, which is adapted to the shape of the positioning head 502. The positioning head 502 can be inserted into the limiting hole 601, and the positioning head 502 cannot rotate relative to the adapter block 6. In this way, the axial positioning block 5 is limited by the cooperation between the positioning head 502 and the limiting hole 601, and the position of the flat key 503 on the positioning rod 501 is also limited. The keyway 801 on the inner ring of the bearing 8 cooperates with the flat key 503 on the positioning rod 501, which limits the installation angle of the bearing 8. This not only prevents the bearing 8 from rotating, but also ensures the installation direction of the bearing 8 on the traction rod 10.

[0053] In this embodiment, the positioning head 502 has a square cross-sectional shape, and the limiting hole 601 is a square hole.

[0054] The assembly of the rubber spherical bearing has a relative positional relationship with the direction of the traction rod 10. Therefore, during the press-fitting process, it is necessary not only to consider the coaxiality of the bearing and the traction rod hole, but also to ensure that the direction of the bearing and the traction rod 10 meets the design requirements. This design can satisfy the requirement that the direction of the bearing and the traction rod 10 meets the design requirements.

[0055] The limiting hole 601 is also adapted to the cross-sectional shape of the positioning connecting block 901 of the bearing 2 9. In this way, the limiting hole 601 can limit the direction of the bearing 2 9, prevent the bearing 2 9 from rotating, and ensure the installation direction of the bearing 2 9 on the traction rod 10.

[0056] The limiting hole 601 is designed as a through hole, and the punch 7 is hollow inside, so that the positioning connecting block 901 of the bearing 2 9 can pass through. The positioning connecting block 901 can pass through the limiting hole 601 on the adapter block 6 and the interior of the punch 7.

[0057] like Figure 4 and Figure 5As shown, when pressing the bearing 8 onto the traction rod 10, firstly, the middle part of the traction rod 10 is placed in the arc-shaped groove 201 on the support block 2, and the pressing end of the traction rod 10 is placed on the press 4; then, the bearing 8 is placed on the pressing end of the traction rod 10, the positioning rod 501 of the axial positioning block 5 is inserted into the inner ring of the bearing 8, and the flat key 503 on the side of the positioning rod 501 is fitted with the keyway 801 on the inner ring; then, the adapter block 6 is fitted with the positioning head 502 of the axial positioning block 5, so that the positioning head 502 is embedded in the adapter block 6. The guide rods 602 of the adapter block 6 slide into the guide grooves 301 on each of the stop blocks 3. During press-fitting, the punch 7 is placed above the adapter block 6, and pressure is applied to the punch 7. The pressure is transmitted to the adapter block 6 through the punch 7, and then to the bearing 8 through the adapter block 6. The bearing 8 is then pressed into the press-fitting hole on the traction rod 10. During the press-fitting process, the guide rods 602 of the adapter block 6 slide along the guide grooves 301 on each of the stop blocks 3. The guide grooves 301 guide the sliding of the guide rods 602. The diameter of the concave hole 401 on the press 4 is smaller than the diameter of the outer ring of the bearing 8 to ensure that the bearing 8 reaches the predetermined press-fitting position.

[0058] like Figure 6As shown, when pressing the bearing 2 9 onto the traction rod 10, firstly, the middle part of the traction rod 10 is placed in the arc-shaped groove 201 on the support block 2, and the pressing end of the traction rod 10 is placed on the press 4; then, the bearing 2 9 is placed on the pressing end of the traction rod 10, and the positioning connecting block 901 on one side of the bearing 2 9 is inserted into the pressing hole of the traction rod 10; then, the adapter block 6 is engaged with the positioning connecting block 901 on the other side of the bearing 2 9, so that the positioning connecting block 901 on the other side of the bearing 2 9 passes through the limiting hole 601 on the adapter block 6, and the adapter block 6... Each guide rod 602 of block 6 slides into the guide groove 301 on each of the stop blocks 3. During press-fitting, the punch 7 is placed above the adapter block 6, the positioning connecting block 901 passes through the interior of the punch 7, and then pressure is applied to the punch 7. The pressure is transmitted through the punch 7 to the adapter block 6, and through the adapter block 6 to the bearing 9. The bearing 9 is then pressed into the press-fitting hole on the traction rod 10. During the press-fitting process, each guide rod 602 of the adapter block 6 slides along the guide groove 301 on each of the stop blocks 3. The guide groove 301 guides the sliding of the guide rod 602. The diameter of the recessed hole 401 on the press 4 is smaller than the diameter of the outer ring of the second bearing 9 to ensure that the second bearing 9 reaches the predetermined press-fit position. The positioning connecting block 901 on one side of the second bearing 9 is inserted into the recessed hole 401. The design of the recessed hole 401 on the press 4 avoids the interference problem between the positioning connecting block 901 on one side of the second bearing 9 and the press 4.

[0059] This utility model presents a cleverly designed tooling for pressing bearings on the traction rod of a maglev vehicle's running gear. It allows the pressing of bearings at both ends of the traction rod to be completed on the same tooling, while also meeting the relative positional requirements of two different types of rubber joint bearings. Furthermore, this tooling is inexpensive, reducing costs; it is easy to use; it requires minimal operator skill; it produces a high rate of qualified finished products; and it boasts high pressing efficiency.

[0060] The fixed installation methods mentioned in this embodiment include, but are not limited to, bolting and welding.

[0061] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A tooling for pressing bearings of traction rods in the running gear of a magnetic levitation vehicle, characterized in that: The device includes a press with recessed holes, an adapter block arranged above the press, and a limiting hole on the adapter block. The adapter block engages with the bearing through the limiting hole or engages with the bearing through an axial positioning block to limit the direction of the bearing. A punch is arranged above the adapter block. During pressing, pressure is applied to the adapter block through the punch, and then to the bearing through the adapter block.

2. The traction rod bearing press-fitting fixture for the running gear of a magnetic levitation vehicle according to claim 1, characterized in that: The axial positioning block includes a positioning rod and a positioning head. The positioning head is fixedly connected to one end of the positioning rod. The positioning rod is used to insert into the inner ring of the bearing. A flat key is formed on the side of the positioning rod, and the flat key is adapted to the keyway on the inner ring of the bearing.

3. The traction rod bearing press-fitting fixture for the running gear of a magnetic levitation vehicle according to claim 2, characterized in that: The shape of the positioning head is adapted to the shape of the limiting hole, and the positioning head can be inserted into the limiting hole.

4. The traction rod bearing press-fitting fixture for the running gear of a magnetic levitation vehicle according to claim 3, characterized in that: The limiting hole is a through hole.

5. The traction rod bearing press-fitting fixture for the running gear of a magnetic levitation vehicle according to claim 1, characterized in that: The cross-sectional shape of the positioning connecting block on both sides of the bearing is adapted to the shape of the limiting hole. The limiting hole is used for the positioning connecting block to pass through and to limit the direction of the bearing.

6. The traction rod bearing press-fitting fixture for the running gear of a magnetic levitation vehicle according to claim 1, characterized in that: The punch has a hollow interior.

7. The traction rod bearing press-fitting fixture for the running gear of a magnetic levitation vehicle according to claim 1, characterized in that: It also includes a stop block arranged on the side of the press, the stop block having a guide groove, the adapter block having a guide rod on its outer side, the guide rod being slidably connected in the guide groove, and the adapter block sliding up and down along the guide groove via the guide rod.

8. The traction rod bearing press-fitting fixture for the running gear of a magnetic levitation vehicle according to claim 7, characterized in that: It also includes a base plate, the press is fixedly mounted on the base plate, and the stop blocks are arranged on three sides of the press, and the stop blocks are also fixedly mounted on the base plate; The adapter block has three guide rods on its outer side, and the three guide rods are slidably disposed in the guide grooves on the three stop blocks.

9. The traction rod bearing press-fitting fixture for the running gear of a magnetic levitation vehicle according to claim 8, characterized in that: A support block is fixedly installed on the base plate. The support block is used to support the traction rod and is arranged on the other side of the press.

10. The traction rod bearing press-fitting fixture for the running gear of a magnetic levitation vehicle according to claim 9, characterized in that: The top surface of the support block is provided with an arc-shaped groove.

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