Electric multiple unit wheel rotation and positioning device

Abstract

The utility model discloses a kind of for electric multiple unit wheel rotation and positioning device, including machine table, hollow rotating table, positioning clamping cylinder, decoupling rotating mechanism, expansion positioning mechanism, electric multiple unit wheel, hollow rotating table is installed on machine table, rotating motor that hollow rotating table is rotated is equipped in machine table, positioning clamping cylinder is located in machine table, the piston rod of positioning clamping cylinder is connected with decoupling rotating mechanism, electric multiple unit wheel is placed on expansion positioning mechanism, expansion positioning mechanism includes multiple wedge expansion block, expansion positioning mechanism is set on hollow rotating table, after realizing hollow rotating table rotation, expansion positioning mechanism and electric multiple unit wheel are rotated together, decoupling rotating mechanism upper end is placed in expansion positioning mechanism, and positioning clamping cylinder is driven wedge expansion block on expansion positioning mechanism by decoupling rotating mechanism, and the shaft hole on electric multiple unit wheel is positioned centrally and clamped by expansion positioning mechanism.The utility model can automatically position and clamp electric multiple unit wheel automatically.

Description

Technical Field

[0001] This utility model relates to the field of rail transit wheel production and maintenance technology, specifically a device for rotating and positioning wheels of electric multiple units. Background Technology

[0002] Train wheels are a type of wheel used in rail transit vehicles, equipped with brake discs. Their characteristic feature is that brake discs are mounted on both sides of the wheel disc using through holes secured with bolts and nuts. Installing or removing the brake discs requires the wheel to be secured first; therefore, during production, assembly, or maintenance, a positioning and clamping wheel mechanism is necessary, which must be rotatable for bolt installation or removal.

[0003] The existing positioning and clamping mechanism requires a slip ring device to integrate the rotation and centering clamping mechanisms, which makes operation inconvenient and cannot guarantee concentricity. Therefore, it needs to be improved. Utility Model Content

[0004] In view of the above-mentioned shortcomings in the existing technology, the purpose of this utility model is to provide a wheel rotation and positioning device for electric multiple units, which solves the problem that the existing wheel positioning and clamping mechanism requires a slip ring device to integrate the two mechanisms, resulting in inconvenient operation and inability to guarantee concentricity.

[0005] The technical solution adopted by this utility model to achieve the above-mentioned objectives is as follows: a device for rotating and positioning wheels of electric multiple units (EMUs), comprising a machine base, a hollow rotating platform, a positioning and clamping cylinder, a decoupling rotation mechanism, a tensioning and positioning mechanism, and an EMU wheel. The hollow rotating platform is mounted on the machine base, and a rotary motor for driving the rotation of the hollow rotating platform is installed inside the machine base. The positioning and clamping cylinder is disposed inside the machine base, and the piston rod of the positioning and clamping cylinder passes through the hollow rotating platform and is connected to the decoupling rotation mechanism. The EMU wheel is placed on the tensioning and positioning mechanism, which includes... The device includes one or more wedge-shaped expansion blocks distributed in a circular motion. The expansion and positioning mechanism is set on the hollow rotating platform, so that when the hollow rotating platform rotates, the expansion and positioning mechanism and the train wheel rotate together. The upper end of the decoupling rotation mechanism is placed inside the expansion and positioning mechanism, and the positioning and clamping cylinder drives the wedge-shaped expansion blocks on the expansion and positioning mechanism through the decoupling rotation mechanism to position and clamp the axle hole on the train wheel. The decoupling rotation mechanism decouples the rotational motion from the extension and retraction motion of the positioning and clamping cylinder to ensure that the two motions do not interfere with each other.

[0006] Furthermore, the decoupled rotation mechanism includes a cylinder connector, a tapered roller bearing, and a wedge-shaped shaft block. The cylinder connector is connected to the piston rod of the positioning and clamping cylinder below. The wedge-shaped shaft block is rotatably connected inside the cylinder connector. The tapered roller bearing, which mates with the inner wall of the cylinder connector, is sleeved on the wedge-shaped shaft block. The tapered roller bearing decouples the rotational motion so as not to affect the telescopic motion, and at the same time, it can be disconnected from electricity or air to avoid the use of the slip ring device.

[0007] Furthermore, the expansion and positioning mechanism also includes a positioning fixing seat and a hinge shaft. Each wedge-shaped expansion block is hinged to the positioning fixing seat via the hinge shaft. The positioning fixing seat is disposed on the hollow rotating platform. A guide plate for initial positioning of the train wheels is disposed above the positioning fixing seat. The wedge-shaped expansion blocks are arranged in a ring on the side of the guide plate, and the wedge-shaped shaft block and the wedge-shaped expansion blocks cooperate with each other. When the positioning clamping cylinder extends, it drives the upper surface of the wedge-shaped shaft block to fit against the corresponding wedge-shaped lower surface of the wedge-shaped expansion block. Following the movement, the wedge-shaped inclined surface on the wedge-shaped shaft block causes the wedge-shaped tensioning block to rotate outward around the hinge axis, extending outward from the side of the guide disc, thereby clamping the train wheel in a centering mode. When the clamping cylinder retracts, it drives the lower surface of the wedge-shaped shaft block to contact the corresponding upper surface of the wedge-shaped tensioning block and follow the movement, causing the wedge-shaped tensioning block to rotate inward around the hinge axis, retracting into the side of the guide disc, thereby releasing the clamping of the wheel. The tensioning and positioning mechanism adopts a wedge structure, converting the linear extension and retraction movement of the cylinder into a radial contraction and tensioning movement to clamp and center.

[0008] Furthermore, the guide plate includes an upper plate body and a lower plate body, and a hollow connecting ring is provided between the upper plate body and the lower plate body. The wedge-shaped tightening blocks are circumferentially distributed within the notch of the connecting ring.

[0009] Furthermore, the wedge-shaped expansion block is provided with a groove, which is engaged within the lower plate body.

[0010] Furthermore, the hinge shaft and the wedge-shaped expansion block are in four groups and are evenly distributed on the positioning and fixing seat in a circular pattern and located on the side of the guide plate to ensure uniform movement in four directions. After the wedge-shaped expansion block expands outward, it is used to clamp the wheel axle hole of the EMU wheel.

[0011] Furthermore, the hollow rotary table has a hollow structure, with the central cavity used to accommodate the positioning clamping cylinder and the decoupling rotation mechanism.

[0012] The beneficial effects of this utility model are as follows: This device decouples the rotational motion of the wheel from the telescopic clamping and positioning motion of the cylinder to ensure that the two motions do not interfere with each other, avoiding the need for transitional connections of rotating devices such as slip rings in electrical or pneumatic circuits. At the same time, it uses circumferentially distributed wedge-shaped expansion blocks for expansion and positioning, which can ensure concentricity while clamping the wheel hole. Attached Figure Description

[0013] Figure 1 This is a cross-sectional view of the overall structure of a wheel rotation and positioning device for electric multiple units disclosed in Embodiment 1.

[0014] Figure 2 This is a perspective view of the structure of the electric multiple unit wheel rotation and positioning device disclosed in Embodiment 1 when no train wheels are installed;

[0015] Figure 3 for Figure 2 A sectional view;

[0016] Figure 4 for Figure 2 A partial internal structure diagram.

[0017] Reference numerals in the attached drawings: 1. Machine base; 2. Hollow rotary table; 3. Positioning and clamping cylinder; 4. Decoupling rotation mechanism; 5. Expansion and positioning mechanism; 6. Train wheel; 4-1. Cylinder connector; 4-2. Tapered roller bearing; 4-3. Wedge-shaped shaft block; 5-1. Positioning and fixing seat; 5-2. Hinge shaft; 5-3. Wedge-shaped expansion block; 5-3. Groove; 5-31. Guide plate; 5-11. Upper plate body; 5-11-1. Lower plate body; 5-11-2. Connecting ring; 7. Rotary motor. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Please see Figures 1 to 4This utility model discloses a device for rotating and positioning wheels of electric multiple units (EMUs), comprising a machine base 1, a hollow rotating platform 2, a positioning and clamping cylinder 3, a decoupling rotation mechanism 4, a tensioning and positioning mechanism 5, and an EMU wheel 6. The hollow rotating platform 2 is mounted on the machine base 1, and a rotary motor 7 for driving the hollow rotating platform 2 is installed inside the machine base 1. The positioning and clamping cylinder 3 is disposed inside the machine base 1, and its piston rod passes through the hollow rotating platform 2 and connects to the decoupling rotation mechanism 4. The EMU wheel 6 is placed on the tensioning and positioning mechanism 5, which includes one or more wedge-shaped expansion joints. The wedge-shaped expansion blocks 5-3 are distributed in a circular motion. The expansion positioning mechanism 5 is set on the hollow rotating table 2, so that when the hollow rotating table 2 rotates, the expansion positioning mechanism 5 and the train wheel 6 rotate together. The upper end of the decoupling rotation mechanism 4 is placed inside the expansion positioning mechanism 5, and the positioning clamping cylinder 3 drives the wedge-shaped expansion blocks 5-3 on the expansion positioning mechanism 5 through the decoupling rotation mechanism 4 to position and clamp the axle hole on the train wheel 6. The decoupling rotation mechanism 4 decouples the rotational motion from the extension and retraction motion of the positioning clamping cylinder 3 to ensure that the two motions do not interfere with each other.

[0020] Furthermore, the decoupling rotation mechanism 4 includes a cylinder connector 4-1, a tapered roller bearing 4-2, and a wedge-shaped shaft block 4-3. The cylinder connector 4-1 is connected to the piston rod of the positioning and clamping cylinder 3 below. The wedge-shaped shaft block 4-3 is rotatably connected inside the cylinder connector 4-1. The tapered roller bearing 4-2, which mates with the inner wall of the cylinder connector 4-1, is sleeved on the wedge-shaped shaft block 4-3. The tapered roller bearing 4-2 decouples the rotational motion so as not to affect the telescopic motion, and at the same time, it can be disconnected from electricity or air to avoid the use of the slip ring device.

[0021] Furthermore, the expansion and positioning mechanism 5 also includes a positioning fixing seat 5-1 and a hinge shaft 5-2. Each wedge-shaped expansion block 5-3 is hinged to the positioning fixing seat 5-1 via the hinge shaft 5-2. The positioning fixing seat 5-1 is set on the hollow rotating table 2. The hollow rotating table 2 has a hollow structure, which makes the overall structure compact and effective, and meets the rotation and positioning requirements of the wheel during assembly or disassembly. The middle cavity is used to accommodate the positioning clamping cylinder 3 and the decoupling rotation mechanism 4. A guide plate 5-11 for initial positioning of the train wheel 6 is set above the positioning fixing seat 5-1. The wedge-shaped expansion blocks 5-3 are arranged in a ring on the side of the guide plate 5-11, and the wedge-shaped shaft block 4-3 cooperates with the wedge-shaped expansion blocks 5-3. When the positioning and clamping cylinder 3 extends, it drives the upper surface of the wedge-shaped shaft block 4-3 to contact and follow the corresponding wedge-shaped lower surface of the wedge-shaped expansion block 5-3. The wedge-shaped inclined surface on the wedge-shaped shaft block 4-3 causes the wedge-shaped expansion block 5-3 to rotate outward around the hinge axis 5-2, so as to extend outward from the side of the guide plate 5-11, thereby clamping the train wheel 6 in a centering mode. When the positioning and clamping cylinder 3 retracts, it drives the lower surface of the wedge-shaped shaft block 4-3 to contact and follow the corresponding wedge-shaped upper surface of the wedge-shaped expansion block 5-3, and rotates the wedge-shaped expansion block 5-3 inward around the hinge axis 5-2, so as to retract into the side of the guide plate 5-11, thereby releasing the clamping of the wheel. The expansion and positioning mechanism 5 adopts a wedge structure, which converts the linear extension and retraction motion of the cylinder into a radial contraction and expansion motion to clamp and center.

[0022] Furthermore, the guide plate 5-11 includes an upper plate body 5-11-1 and a lower plate body 5-11-2. A hollow connecting ring 5-11-3 is provided between the upper plate body 5-11-1 and the lower plate body 5-11-2. The wedge-shaped expansion blocks 5-3 are circumferentially distributed in the notch of the connecting ring 5-11-3. The wedge-shaped expansion blocks 5-3 are provided with grooves 5-31, which are engaged in the lower plate body 5-11-2. The hinge shaft 5-2 and the wedge-shaped expansion blocks 5-3 are in four groups and are evenly distributed circumferentially on the positioning and fixing seat 5-1 and located on the side of the guide plate 5-11 to ensure uniform movement in four directions. This structure uses wedge-shaped expansion blocks 5-3 in four directions for expansion and positioning. While clamping the wheel hole, it can ensure concentricity. After the wedge-shaped expansion blocks 5-3 expand outward, they are used to clamp the wheel axle hole of the EMU wheel 6.

[0023] In this embodiment, the rotary motion is decoupled by the tapered roller bearing 4-2 so as not to affect the telescopic motion, and at the same time, it can be decoupled from electricity or air to avoid the use of the slip ring device.

[0024] This structure achieves rapid clamping of the train wheels 6 by setting up a positioning clamping cylinder 3, a decoupling rotation mechanism 4 and a specific expansion and positioning mechanism 5. It avoids the problem of overly complex structure caused by the need for rotating devices such as slip rings in electrical or pneumatic circuits. Moreover, the wedge-shaped expansion blocks 5-3 are distributed in a ring to ensure concentricity.

[0025] During operation, the train wheel 6 is first placed on the guide plate 5-11, which facilitates the initial positioning of the train wheel 6 by the upper plate 5-11-1. Then, the drive equipment operates. When the positioning clamping cylinder 3 extends, it drives the upper surface of the wedge-shaped shaft block 4-3 to contact and follow the corresponding wedge-shaped lower surface of the wedge-shaped expansion block 5-3. The wedge-shaped inclined surface on the wedge-shaped shaft block 4-3 causes the wedge-shaped expansion block 5-3 to rotate outward around the hinge axis 5-2, so as to extend outward from the side of the guide plate 5-11, thereby clamping the train wheel 6 in a centering mode. When the positioning clamping cylinder 3 retracts, it drives the lower surface of the wedge-shaped shaft block 4-3 to contact the corresponding wedge-shaped expansion block 5-3. -3 corresponds to the upper surface of the wedge and follows the movement, rotating the wedge-shaped expansion block 5-3 inward around the hinge axis 5-2 to retract into the side of the guide plate 5-11, thereby loosening the clamping of the wheel. The expansion and positioning mechanism 5 adopts a wedge structure, which converts the linear extension and retraction movement of the cylinder into a radial contraction and expansion movement to clamp and center. This structure uses the decoupling rotation mechanism 4 to decouple the rotation movement from the extension and retraction movement of the positioning and clamping cylinder 3 to ensure that the two movements do not interfere with each other, so that there is no need for a slip ring device to integrate the two mechanisms together, which leads to inconvenient operation and also cannot guarantee concentricity.

[0026] All standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. In addition, the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0027] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A device for rotating and positioning wheels of electric multiple units (EMUs), comprising a machine base (1), a hollow rotary table (2), a positioning and clamping cylinder (3), a decoupling rotation mechanism (4), a tensioning and positioning mechanism (5), and an EMU wheel (6), characterized in that: The hollow rotary table (2) is mounted on the machine base (1). A rotary motor (7) for driving the hollow rotary table (2) to rotate is installed inside the machine base (1). The positioning and clamping cylinder (3) is located inside the machine base (1). The piston rod of the positioning and clamping cylinder (3) passes through the hollow rotary table (2) and connects to the decoupling rotation mechanism (4). The train wheels (6) are placed on the expansion and positioning mechanism (5). The expansion and positioning mechanism (5) includes one or more wedge-shaped expansion blocks (5-3), which are distributed in a circular motion. (5) Set on the hollow rotating platform (2) so that the hollow rotating platform (2) rotates together with the expansion and positioning mechanism (5) and the train wheel (6). The upper end of the decoupling rotating mechanism (4) is placed inside the expansion and positioning mechanism (5), and the positioning clamping cylinder (3) drives the wedge-shaped expansion block (5-3) on the expansion and positioning mechanism (5) through the decoupling rotating mechanism (4) to position and clamp the shaft hole on the train wheel (6). The decoupling rotating mechanism (4) decouples the rotational motion from the extension and retraction motion of the positioning clamping cylinder (3) to ensure that the two motions do not interfere with each other.

2. The device for rotating and positioning wheels of electric multiple units according to claim 1, characterized in that: The decoupled rotation mechanism (4) includes a cylinder connector (4-1), a tapered roller bearing (4-2), and a wedge-shaped shaft block (4-3). The cylinder connector (4-1) is connected to the piston rod of the positioning and clamping cylinder (3) below. The wedge-shaped shaft block (4-3) is rotatably connected inside the cylinder connector (4-1). The tapered roller bearing (4-2) that mates with the inner wall of the cylinder connector (4-1) is sleeved on the wedge-shaped shaft block (4-3). The tapered roller bearing (4-2) decouples the rotational motion so as not to affect the telescopic motion. At the same time, it can be disconnected from electricity or air to avoid the use of the slip ring device.

3. The device for rotating and positioning wheels of electric multiple units according to claim 2, characterized in that: The expansion and positioning mechanism (5) further includes a positioning fixing seat (5-1) and a hinge shaft (5-2). Each wedge-shaped expansion block (5-3) is hinged to the positioning fixing seat (5-1) via the hinge shaft (5-2). The positioning fixing seat (5-1) is set on the hollow rotating table (2). A guide plate (5-11) for initial positioning of the train wheels (6) is set above the positioning fixing seat (5-1). The wedge-shaped expansion blocks (5-3) are arranged in a ring on the side of the guide plate (5-11), and the wedge-shaped shaft block (4-3) cooperates with the wedge-shaped expansion blocks (5-3).

4. The device for rotating and positioning wheels of electric multiple units according to claim 3, characterized in that: The guide plate (5-11) includes an upper plate body (5-11-1) and a lower plate body (5-11-2). A hollow connecting ring (5-11-3) is provided between the upper plate body (5-11-1) and the lower plate body (5-11-2). The wedge-shaped tightening block (5-3) is circumferentially distributed in the notch of the connecting ring (5-11-3).

5. The device for rotating and positioning wheels of electric multiple units according to claim 4, characterized in that: The wedge-shaped expansion block (5-3) is provided with a groove (5-31), which is engaged in the lower plate body (5-11-2).

6. The device for rotating and positioning wheels of electric multiple units according to claim 3, characterized in that: The hinge shaft (5-2) and the wedge-shaped expansion block (5-3) are in four groups and are evenly distributed on the positioning and fixing seat (5-1) and located on the side of the guide plate (5-11) to ensure uniform movement in four directions. The wedge-shaped expansion block (5-3) is used to clamp the wheel axle hole of the EMU wheel (6) after it expands outward.

7. The device for rotating and positioning wheels of electric multiple units according to claim 1, 2, 3, or 4, characterized in that: The hollow rotary table (2) has a hollow structure, and the middle cavity is used to accommodate the positioning clamping cylinder (3) and the decoupling rotation mechanism (4).

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