Air gap guarantee device for linear motor of aerial rail transport vehicle

Abstract

The utility model discloses an air gap guaranteeing device for a linear motor of an air rail transport vehicle. The device comprises a linear motor, positioning wheel pairs and a motor frame, the linear motor is installed above the motor frame, the positioning wheel pairs are installed on the front side and the rear side of the motor frame respectively, the positioning wheel pairs make contact with a steel rail laid on the top of a track beam to be used for guaranteeing an air gap of the linear motor, and a pre-compressed spiral steel spring is installed between the motor frame and a framework. The spiral steel spring compensates the height change of the framework through the height change, and it is guaranteed that the positioning wheel pair makes contact with a steel rail laid on the top of a track beam in real time. According to the utility model, the air gap (namely, the gap between the motor and the track) of the motor is kept constant, the transmission stability of force is ensured, and the structure is simple and reliable.

Description

Technical Field

[0001] This utility model belongs to the technical field of aerial rail transport vehicles, specifically relating to an air gap protection device for a linear motor of an aerial rail transport vehicle. Background Technology

[0002] Linear motor vehicles, due to their strong climbing ability, are used on steep gradient tracks. During vehicle operation, it is necessary to maintain the air gap of the linear motor to ensure traction and braking force. Manufacturing errors and elastic deformation of the steel track beams can cause variations in the air gap of the linear motor. Therefore, an air gap protection device is needed for suspended linear motor monorail vehicles to eliminate the influence of various factors on the air gap of the linear motor.

[0003] To reduce track costs, the track may have a significant gradient. In this case, rotary electric locomotives relying on adhesive traction will not be able to meet the climbing requirements, while linear electric locomotives that do not rely on adhesive traction can.

[0004] During vehicle operation, it is essential to ensure that the air gap of the linear motor meets operational requirements. While ensuring the air gap is relatively easy for surface rail transit systems due to their high track rigidity and precision, it is more challenging for suspended linear motor monorail vehicles using steel track beams. Therefore, a new air gap assurance device suitable for suspended vehicles is needed to simply and conveniently guarantee the air gap of the linear motor. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of the aforementioned background technology and provide an air gap protection device for linear motors in aerial rail transport vehicles.

[0006] The technical solution adopted by this utility model is: an air gap protection device for a linear motor of an aerial rail transport vehicle, including a linear motor, positioning wheelsets and a motor frame. The linear motor is installed on the motor frame, and positioning wheelsets are respectively installed on the front and rear sides of the motor frame. The positioning wheelsets contact the steel rails laid on the top of the track beam to protect the air gap of the linear motor. A pre-compressed helical steel spring is installed between the motor frame and the frame. The helical steel spring compensates for the height change of the frame by changing its height, ensuring that the positioning wheelsets are in real-time contact with the steel rails laid on the top of the track beam.

[0007] In a further preferred configuration, a longitudinal tie rod is installed horizontally between the motor frame and the frame to transmit the traction force and electric braking force of the linear motor.

[0008] In a further preferred configuration, the motor frame and the frame are fixedly connected by a horizontal tie rod installed in the horizontal direction.

[0009] In a further preferred configuration, the positioning wheel pair includes a positioning wheel, a bearing, a bushing, an adjusting bracket, an axle, a bearing flange, a bearing cover, a bearing end cover, an adjusting block, U-bolts, and a pressure plate. The positioning wheel is movably mounted on both ends of the axle via the bearing. The adjusting bracket is movably fitted onto the axle via the bushing. A pressure plate is provided in the middle of the outer side of the adjusting bracket. The adjusting block is fixed at the bottom of the adjusting bracket. The bearing is fixed to the bearing flange and sealed by the bearing cover and the bearing end cover. The positioning wheel pair is installed onto the motor frame via U-bolts.

[0010] In a further preferred configuration, the motor frame includes side beams, cross beams, a motor mount, a spring mount, a longitudinal tie rod mount, and a transverse tie rod mount. Two side beams are arranged horizontally at intervals, and at least three cross beams are vertically connected between the two side beams. At least one motor mount is fixed below the side beam for connecting a linear motor. The spring mount is fixed below the side beam for fixing a helical steel spring. The longitudinal tie rod mount and the transverse tie rod mount are fixed below the side beam for fixing to the longitudinal tie rod and the transverse tie rod, respectively.

[0011] In a further preferred configuration, both the longitudinal tie rod and the transverse tie rod include a rod body. One end of the rod body is provided with a mandrel, which is fixed to the longitudinal tie rod seat and the transverse tie rod seat by bolts. The other end of the rod body is fixedly connected to a fastener by bolts, and the fastener is fixed to a mounting boss on the upper surface of the frame.

[0012] In a further preferred configuration, the spiral steel spring includes a lower clamping plate, an upper clamping plate, and a spring sleeved on the central guide post inside the upper clamping plate. The spring is located between the lower clamping plate and the upper clamping plate. A rubber pad and an adjusting pad are provided between the lower end face of the spring and the upper end face of the lower clamping plate. A clamping plate is provided between the rubber pad and the adjusting pad. The clamping plate is fixed to the lower part of the upper clamping plate.

[0013] In a further preferred configuration, the helical steel spring is mounted on the end beam of the frame.

[0014] In a further preferred configuration, the linear motor is elastically mounted on a motor frame via a suspension point thereon.

[0015] In a further preferred configuration, a cooling fan is mounted on the lower part of the linear motor.

[0016] The beneficial effects of this utility model are as follows:

[0017] 1. The use of positioning wheelsets ensures the air gap of the linear motor, guaranteeing that the air gap of the motor (i.e., the gap between the motor and its track) remains constant, resulting in a simple and reliable structure;

[0018] 2. The pre-compressed helical steel spring can compensate for the influence of manufacturing errors, elastic deformation of the track beam, and deflection of the primary spring on the air gap of the linear motor; the helical steel spring is used to compensate for the height change of the frame, ensuring the appropriate gap between the motor frame and the frame under various conditions; the continuous contact between the motor frame and the rails laid on the top of the track beam is maintained by the height change; the spring design takes into account the adjustment pads and clamps, which can provide good support and shock absorption.

[0019] 3. Longitudinal tie rods are used to transmit traction and electric braking forces in the horizontal direction, ensuring stable force transmission; transverse tie rods are used to fix the connection between the motor frame and the frame, enhancing the rigidity of the structure.

[0020] 4. A fan is installed at the bottom of the linear motor to cool the motor and ensure that the motor maintains a suitable temperature during operation to avoid overheating. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of an air gap protection device for a linear motor of an aerial rail transport vehicle according to the present invention;

[0022] Figure 2 This is an exploded view of the parts of an air gap protection device for a linear motor of an aerial rail transport vehicle according to the present invention.

[0023] Figure 3 This is a front view of an air gap protection device for a linear motor of an aerial rail transport vehicle according to this utility model.

[0024] Figure 4 This is a side view of an air gap protection device for a linear motor of an aerial rail transport vehicle according to the present invention.

[0025] Figure 5 This is a schematic diagram of the positioning wheelset structure;

[0026] Figure 6 This is a schematic diagram of the motor frame structure;

[0027] Figure 7 This is a schematic diagram of a helical steel spring structure;

[0028] Figure 8 This diagram illustrates the connection between the longitudinal and transverse tie rod structures and fasteners and the frame.

[0029] Figure 9 This is a schematic diagram of the longitudinal and transverse tie rod structures.

[0030] In the diagram, 1-linear motor (1.1-hanging point; 1.2-fan); 2-positioning wheel pair; 3-motor frame; 4-helical steel spring; 5-longitudinal tie rod; 6-lateral tie rod; 7-frame (7.1-mounting boss); 8-fastener;

[0031] 2.1-Positioning wheel; 2.2-Bearing; 2.3-Bushing; 2.4-Adjusting bracket; 2.5-Axle; 2.6-Bearing flange; 2.7-Bearing cover; 2.8-Bearing end cover; 2.9-Adjusting block; 2.10-U-bolt; 2.11-Pressure plate;

[0032] 3.1-End beam; 3.2-Side beam; 3.3-First crossbeam; 3.4-Second crossbeam; 3.5-Third crossbeam; 3.6-First motor mount; 3.7-Second motor mount; 3.8-Plate; 3.9-Spring mount; 3.10-Lifting lug; 3.11-First longitudinal tie rod mount; 3.12-Second longitudinal tie rod mount; 3.13-Stiffener plate; 3.14-Motor mount plate; 3.15-Transverse tie rod mount;

[0033] 4.1-Lower clamping plate; 4.2-Upper clamping plate; 4.3-Spring; 4.4-Clamping plate; 4.5-Rubber pad; 4.6-Adjusting pad. Detailed Implementation

[0034] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings. It should be noted that these descriptions are for the purpose of aiding understanding of this utility model, but do not constitute a limitation thereof. Furthermore, the technical features involved in the various embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0035] Furthermore, in the description of this application and the claims, the terms "first," "second," "third," "top," "bottom," "one side," "the other side," "one end," "the other end," etc., are used only for distinguishing descriptions and should not be construed as indicating or implying relative importance. For example, without departing from the scope of this specification, a first component may be referred to as a second component, and similarly, a second component may be referred to as a first component. Top and bottom components may, in certain circumstances, be interchanged or converted from each other; components at one end and at the other end may have the same or different performance characteristics.

[0036] When using the terms "comprising," "having," and "including" as described in this specification, another part or other components may be included unless used. The terms are generally singular but can also represent plural forms. In the description of this specification, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not 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 the present invention. Furthermore, when constructing components, although not explicitly described, it is understood that a certain margin of error is necessarily included.

[0037] like Figure 1-3 As shown, this utility model provides an air gap protection device for a linear motor of an aerial rail transport vehicle, including a linear motor 1, a positioning wheel pair 2, a motor frame 3, a helical steel spring 4, a longitudinal tie rod 5, and a transverse tie rod 6. The linear motor 1 is mounted on the motor frame 3, and the positioning wheel pair 2 is mounted on the motor frame 3, as shown... Figure 4 As shown, positioning wheel pair 2 contacts the steel rail laid on top of the track beam to ensure the air gap of the linear motor.

[0038] In some optional embodiments, a pre-compressed helical steel spring 4 is installed between the motor frame 3 and the frame 7. The helical steel spring 4 compensates for the height changes of the bogie frame 7 caused by factors such as wear of the running wheels and deflection of the primary spring through height changes, thereby ensuring that the positioning wheelset 2 is in real-time contact with the top rail of the beam (the steel rail laid on the top of the track beam).

[0039] In some optional embodiments, a longitudinal tie rod 5 is installed between the motor frame 3 and the frame 7 to transmit the traction force and electric braking force of the linear motor 1. The motor frame 3 and the frame 7 are fixedly connected by a transverse tie rod 6 installed in the horizontal direction.

[0040] In some optional embodiments, the helical steel spring 4 is mounted on the end beam of the frame 7. The linear motor 1 is elastically mounted on the motor frame 3 via three hanging points 1.1, and the positioning wheel pair 2 is bolted to the motor frame 3. After the motor frame 3, linear motor 1, and positioning wheel pair 2 are assembled, they sit on the helical steel spring 4. The motor frame 3 and the frame 7 are horizontally fixed together by a transverse tie rod 6 and a longitudinal tie rod 5, with the longitudinal tie rod 5 transmitting the traction force and electric braking force of the linear motor 1. The helical steel spring 4, through preload, ensures that the wheels in the positioning wheel pair 2 are in constant contact with the rail on the top of the beam, thereby guaranteeing the gap between the linear motor 1 and the induction plate on the track beam.

[0041] A short-stator linear motor is mounted on the vehicle, generating traction and electric braking forces between itself and an induction plate mounted on the track. The air gap between the linear motor 1 and the induction plate has a significant impact on the performance of the linear motor, so this air gap must be strictly controlled during vehicle operation.

[0042] Two cooling fans 1.2 are installed at the bottom of the linear motor 1.

[0043] In some alternative embodiments, such as Figure 5 As shown, the positioning wheel pair 2 includes a positioning wheel 2.1, a bearing 2.2, a bushing 2.3, an adjusting bracket 2.4, an axle 2.5, a bearing flange 2.6, a bearing cover 2.7, a bearing end cover 2.8, an adjusting block 2.9, a U-bolt 2.10, and a pressure plate 2.11. The positioning wheel pair 2 is mounted to the motor frame 3 via the U-bolt 2.10, and the wheel surface is vulcanized with polyurethane. After the wheel wears out, compensation is achieved by adding a shim under the adjusting bracket 2.4. Specifically, the positioning wheel 2.1 is movably mounted on both ends of the axle 2.5 via the bearing 2.2, the adjusting bracket 2.4 is movably fitted onto the axle 2.5 via the bushing 2.3, a pressure plate 2.11 is located in the middle of the outer side of the adjusting bracket 2.4, the adjusting block 2.9 is fixed at the bottom of the adjusting bracket 2.4, the bearing 2.2 is fixed to the bearing flange 2.6 and sealed by the bearing cover 2.7 and the bearing end cover 2.8, and the positioning wheel pair 2 is mounted to the motor frame 3 via the U-bolt 2.10.

[0044] In some alternative embodiments, such as Figure 6 As shown, the motor frame 3 is a welded steel plate structure, providing an interface for the installation of components such as the linear motor 1, positioning wheel pair 2, and helical steel spring 4. The motor frame 3 includes end beam 3.1, side beam 3.2, first to third crossbeams 3.3 to 3.5, first motor base to second motor base 3.6 to 3.7, pad 3.8, spring seat 3.9, lifting lug 3.10, first longitudinal tie rod seat 3.11, second longitudinal tie rod seat 3.12, stiffening plate 3.13, motor base plate 3.14, and transverse tie rod seat 3.15. Among them, two side beams 3.2 are arranged horizontally at intervals, and the first to third crossbeams 3.3 to 3.5 are vertically connected between the two side beams 3.2. The end beam 3.1 is fixed to both ends of the side beam 3.2. The first motor seat to the second motor seat 3.6 to 3.7 are fixed below the side beam 3.2 to connect the linear motor 1. The spring seat 3.9 is fixed below the side beam 3.2 to fix the helical steel spring 4. The first longitudinal tie rod seat 3.11, the second longitudinal tie rod seat 3.12, and the transverse tie rod seat 3.15 are fixed below the side beam 3.2 to be fixed with the longitudinal tie rod 5 and the transverse tie rod 6.

[0045] In some alternative embodiments, such as Figure 7As shown, the helical steel spring 4 includes a lower clamping plate 4.1, an upper clamping plate 4.2, a spring 4.3, a clamping plate 4.4, a rubber pad 4.5, and an adjusting pad 4.6. The spring 4.3 is sleeved on the central guide post inside the upper clamping plate 4.2. The spring 4.3 is located between the lower clamping plate 4.1 and the upper clamping plate 4.2. A rubber pad 4.5 and an adjusting pad 4.6 are provided between the lower end face of the spring 4.3 and the upper end face of the lower clamping plate 4.1. A clamping plate 4.4 is provided between the rubber pad 4.5 and the adjusting pad 4.6, and the clamping plate 4.4 is fixed to the lower part of the upper clamping plate 4.2.

[0046] In some alternative embodiments, such as Figure 8 , Figure 9 As shown, both the longitudinal tie rod 5 and the transverse tie rod 6 include a rod body. One end of the rod body is provided with a spindle. The spindle is fixed to the first longitudinal tie rod seat 3.11, the second longitudinal tie rod seat 3.12, or the transverse tie rod seat 3.15 by bolts. The other end of the rod body is fixedly connected to the fastener 8 by bolts. The fastener 8 is fixed to the mounting boss 7.1 on the upper end face of the frame 7.

[0047] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Contents not described in detail in this specification belong to prior art known to those skilled in the art.

Claims

1. An air gap protection device for a linear motor of an aerial rail transport vehicle, comprising a linear motor (1), positioning wheelsets (2), and a motor frame (3), characterized in that: The linear motor (1) is installed above the motor frame (3). The motor frame (3) is equipped with positioning wheelsets (2) on the front and rear sides respectively. The positioning wheelsets (2) contact the steel rails laid on the top of the track beam to ensure the air gap of the linear motor. A pre-compressed helical steel spring (4) is installed between the motor frame (3) and the frame (7). The helical steel spring (4) compensates for the height change of the frame (7) by changing its height, ensuring that the positioning wheelsets (2) are in real time in contact with the steel rails laid on the top of the track beam.

2. The air gap protection device for a linear motor of an aerial rail transport vehicle according to claim 1, characterized in that: The motor frame (3) and the frame (7) are connected horizontally by a longitudinal tie rod (5) to transmit the traction force and electric braking force of the linear motor (1).

3. The air gap protection device for a linear motor of an aerial rail transport vehicle according to claim 1, characterized in that: The motor frame (3) and the frame (7) are fixedly connected by a horizontal tie rod (6) installed in the horizontal direction.

4. The air gap protection device for a linear motor of an aerial rail transport vehicle according to claim 1, characterized in that: The positioning wheel pair (2) includes a positioning wheel (2.1), a bearing (2.2), a bushing (2.3), an adjusting bracket (2.4), an axle (2.5), a bearing flange (2.6), a bearing cover (2.7), a bearing end cover (2.8), an adjusting block (2.9), a U-bolt (2.10), and a pressure plate (2.11). The positioning wheel (2.1) is movably mounted on both ends of the axle (2.5) via the bearing (2.2). The adjusting bracket (2.9) includes a positioning wheel (2.1), a bearing (2.2), a bushing (2.3), an adjusting bracket (2.4), a bearing (2.5), a bearing flange (2.6), a bearing cover (2.7), a bearing end cover (2.8), an adjusting block (2.9), a U-bolt (2.10), and a pressure plate (2.11). 4) The bushing (2.3) is movably fitted onto the axle (2.5). The adjustment bracket (2.4) has a pressure plate (2.11) in the middle of its outer side. The adjustment bracket (2.4) has an adjustment block (2.9) fixed at its bottom. The bearing (2.2) is fixed onto the bearing flange (2.6) and sealed by the bearing cover (2.7) and bearing end cover (2.8). The positioning wheel pair (2) is installed onto the motor frame (3) by U-bolts (2.10).

5. A linear motor air gap protection device for an aerial rail transport vehicle according to claim 2 or 3, characterized in that: The motor frame (3) includes a side beam (3.2), a crossbeam, a motor base, a spring base (3.9), a longitudinal tie rod base, and a transverse tie rod base (3.15). Two side beams (3.2) are arranged horizontally at intervals. At least three crossbeams are vertically connected between the two side beams (3.2). At least one motor base is fixed below the side beam (3.2) for connecting a linear motor (1). The spring base (3.9) is fixed below the side beam (3.2) for fixing a helical steel spring (4). The longitudinal tie rod base and the transverse tie rod base (3.15) are fixed below the side beam (3.2) for fixing with the longitudinal tie rod (5) and the transverse tie rod (6).

6. The air gap protection device for a linear motor of an aerial rail transport vehicle according to claim 5, characterized in that: Both the longitudinal tie rod (5) and the transverse tie rod (6) include a rod body. One end of the rod body is provided with a mandrel. The mandrel is fixed to the longitudinal tie rod seat and the transverse tie rod seat (3.15) by bolts. The other end of the rod body is fixedly connected to the fastener (8) by bolts. The fastener (8) is fixed on the mounting boss (7.1) on the upper surface of the frame (7).

7. The air gap protection device for a linear motor of an aerial rail transport vehicle according to claim 1, characterized in that: The spiral steel spring (4) includes a lower clamping plate (4.1), an upper clamping plate (4.2), and a spring (4.3) sleeved on the central guide post inside the upper clamping plate (4.2). The spring (4.3) is located between the lower clamping plate (4.1) and the upper clamping plate (4.2). A rubber pad (4.5) and an adjusting pad (4.6) are provided between the lower end face of the spring (4.3) and the upper end face of the lower clamping plate (4.1). A clamping plate (4.4) is provided between the rubber pad (4.5) and the adjusting pad (4.6). The clamping plate (4.4) is fixed to the lower part of the upper clamping plate (4.2).

8. The air gap protection device for a linear motor of an aerial rail transport vehicle according to claim 1, characterized in that: The spiral steel spring (4) is installed on the end beam of the frame (7).

9. The air gap protection device for a linear motor of an aerial rail transport vehicle according to claim 1, characterized in that: The linear motor (1) is elastically mounted on the motor frame (3) via its suspension point (1.1).

10. The air gap protection device for a linear motor of an aerial rail transport vehicle according to claim 1, characterized in that: A cooling fan (1.2) is installed at the bottom of the linear motor (1).

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