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

Abstract

The invention 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. The air gap (namely, the gap between the motor and the track) of the motor is kept constant, stable force transmission is ensured, and the structure is simple and reliable.

Description

Technical Field

[0001] The invention belongs to the technical field of aerial rail transportation vehicles, and in particular relates to an air gap protection device for a linear motor of an aerial rail transportation vehicle. Background Art

[0002] Linear motor vehicles are used on steep slopes due to their strong climbing ability. During vehicle operation, the air gap of the linear motor needs to be guaranteed to ensure traction and braking force. Factors such as manufacturing errors and elastic deformation of steel track beams will cause changes in the air gap of the linear motor, so an air gap protection device applied to suspended linear motor sky-rail vehicles is needed to eliminate the influence of various factors on the air gap of the linear motor.

[0003] In order to reduce the line cost, the line slope may be large. In this case, the rotary motor vehicle relying on adhesion traction will not be able to meet the climbing requirements, while the linear motor vehicle not relying on adhesion traction can meet the climbing requirements.

[0004] During the operation of the vehicle, it is necessary to ensure that the air gap of the linear motor meets the use requirements. Due to the high rigidity and high precision of the ground rail transit line, it is relatively easy to ensure the air gap, but it is relatively difficult to ensure the air gap of the linear motor in the suspended linear motor sky-high rail vehicle with steel track beams. Therefore, a new linear motor air gap protection device suitable for suspended vehicles is needed to simply and conveniently ensure the air gap of the linear motor. Summary of the invention

[0005] The purpose of the present invention is to solve the deficiencies of the above-mentioned background technology and to provide an air gap protection device for a linear motor of an aerial rail transportation vehicle.

[0006] The technical solution adopted by the present invention is: a linear motor air gap guarantee device for an aerial rail transportation vehicle, comprising a linear motor, a positioning wheel pair and a motor frame, wherein the linear motor is installed above the motor frame, and the front and rear sides of the motor frame are respectively provided with positioning wheel pairs, and the positioning wheel pairs are in contact with the steel rails laid on the top of the track beam to ensure the air gap of the linear motor, and a pre-compressed spiral steel spring is installed between the motor frame and the frame, and the spiral steel spring compensates for the height change of the frame by changing its height, thereby ensuring that the positioning wheel pair is in real-time contact with the steel rails laid on the top of the track beam.

[0007] In a further preferred structure, a longitudinal tie rod is installed in the horizontal direction 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 structure, the motor frame and the frame are fixedly connected by a horizontally installed transverse tie rod.

[0009] A further preferred structure is that 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, a U-bolt and a pressure plate, the positioning wheel is movably arranged at both ends of the axle through a bearing, the adjusting bracket is movably sleeved on the axle through a bushing, a pressure plate is provided in the middle of the outer side of the adjusting bracket, an adjusting block is fixed at the bottom of the adjusting bracket, the bearing is fixed on the bearing flange and sealed by the bearing cover and the bearing end cover, and the positioning wheel pair is mounted on the motor frame through a U-bolt.

[0010] A further preferred structure is that the motor frame includes a side beam, a cross beam, a motor seat, a spring seat, a longitudinal tie rod seat, and a transverse tie rod seat, two of the side beams are horizontally spaced apart, at least three of the cross beams are vertically connected between the two side beams, at least one of the motor seats is fixed under the side beam for connecting a linear motor, the spring seat is fixed under the side beam for fixing a coil steel spring, and the longitudinal tie rod seat and the transverse tie rod seat are fixed under the side beam for fixing to the longitudinal tie rod and the transverse tie rod.

[0011] According to a further preferred structure, the longitudinal tie rod and the transverse tie rod each include a rod body, a core shaft is provided at the end of one end of the rod body, the core shaft 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 the mounting boss on the upper end surface of the frame.

[0012] A further preferred structure is that the spiral steel spring includes a lower clamping plate, an upper clamping plate, and a spring mounted on the inner center guide column of the upper clamping plate, the spring is located between the lower clamping plate and the upper clamping plate, a rubber pad and an adjustment pad are provided between the lower end surface of the spring and the upper end surface of the lower clamping plate, a clamping plate is provided between the rubber pad and the adjustment pad, and the clamping plate is fixed to the lower part of the upper clamping plate.

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

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

[0015] In a further preferred structure, a fan for cooling is installed at the bottom of the linear motor.

[0016] The beneficial effects of the present invention are as follows:

[0017] 1. Use positioning wheels to ensure the air gap of the linear motor, so as to ensure that the air gap of the motor (i.e. the gap between the motor and its track) remains constant, with a simple and reliable structure;

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

[0019] 3. The longitudinal tie rod is used to transmit traction and electric braking force in the horizontal direction to ensure stable force transmission; the transverse tie rod is used to fix the connection between the motor frame and the frame to enhance 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. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of an air gap protection device for a linear motor of an aerial rail transportation vehicle of the present invention;

[0022] Figure 2 It is a schematic diagram of the exploded parts of an air gap protection device for a linear motor of an aerial rail transportation vehicle of the present invention;

[0023] Figure 3 It is a front view of an air gap protection device for a linear motor of an aerial rail transportation vehicle of the present invention;

[0024] Figure 4 It is a side view of an air gap protection device for a linear motor of an aerial rail transportation vehicle of the present invention;

[0025] Figure 5 It is a schematic diagram of the positioning wheel set structure;

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

[0027] Figure 7 It is a schematic diagram of the structure of a spiral steel spring;

[0028] Figure 8 It is a schematic diagram of the connection between the longitudinal tie rod and the transverse tie rod structure and the fasteners and the frame;

[0029] Fig. 9 Schematic diagram of the longitudinal and transverse tie rod structures.

[0030] In the figure, 1-linear motor (1.1-hanging point; 1.2-fan); 2-positioning wheel set; 3-motor frame; 4-helical steel spring; 5-longitudinal pull rod; 6-transverse pull 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 cross beam; 3.4-second cross beam; 3.5-third cross beam; 3.6-first motor seat; 3.7-second motor seat; 3.8-shim plate; 3.9-spring seat; 3.10-lifting ear; 3.11-first longitudinal tie rod seat; 3.12-second longitudinal tie rod seat; 3.13-rib plate; 3.14-motor seat plate; 3.15-transverse tie rod seat;

[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 DESCRIPTION

[0034] The specific embodiments of the present invention are further described below in conjunction with the accompanying drawings. It should be noted that the description of these embodiments is used to help understand the present invention, but does not constitute a limitation of the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0035] In addition, in the description of the present application and the claims, the terms "first", "second", "third", "top", "bottom", "one side", "the other side", "one end", "the other end", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance. For example, without departing from the scope of this specification, the first component can be called the second component, and similarly, the second component can be called the first component. The components at the top and the bottom can also be swapped or converted with each other under certain circumstances; the components at one end and the other end can have the same or different performances.

[0036] In the case of using "including", "having" and "comprising" described in this specification, unless used, there may also be another part or other parts, and the terms used may generally be singular but may also represent plural forms. In the description of this specification, it should be understood that the orientation or position relationship indicated by the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, when constituting a component, although there is no clear description thereof, it can be understood that a certain error area must be included.

[0037] like Figure 1-3 As shown, the present invention provides an air gap protection device for a linear motor of an aerial rail transportation vehicle, comprising a linear motor 1, a positioning wheel pair 2, a motor frame 3, a spiral 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. Figure 4 As shown, the positioning wheel set 2 is in contact with the rails laid on the 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 change of the bogie frame 7 caused by factors such as the wear of the running wheels and the deflection of the primary spring through height change, thereby ensuring that the positioning wheel pair 2 is in real-time contact with the beam top track (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 through the three hanging points 1.1 thereon, and the positioning wheel pair 2 is mounted on the motor frame 3 by bolts. After the motor frame 3, the linear motor 1, and the positioning wheel pair 2 are assembled, they are seated on the helical steel spring 4. The motor frame 3 and the frame 7 are fixed horizontally by the transverse tie rod 6 and the longitudinal tie rod 5, and the longitudinal tie rod 5 transmits the traction force and electric braking force of the linear motor 1. The helical steel spring 4 makes the wheels in the positioning wheel pair 2 contact with the top rail of the beam in real time through pre-pressure, thereby ensuring the gap between the linear motor 1 and the induction plate on the track beam.

[0041] The short stator linear motor is installed on the vehicle, and generates traction and electric braking force between the linear motor 1 and the induction plate installed on the track. The air gap between the linear motor 1 and the induction plate has a great influence on the performance of the linear motor, so the air gap must be strictly guaranteed during the operation of the vehicle.

[0042] Two fans 1.2 for cooling are installed under the linear motor 1.

[0043] In some optional embodiments, such as Figure 5 As shown, the positioning wheel set 2 includes a positioning wheel 2.1, a bearing 2.2, a bushing 2.3, an adjustment bracket 2.4, an axle 2.5, a bearing flange 2.6, a bearing cover 2.7, a bearing end cover 2.8, an adjustment block 2.9, a U-bolt 2.10, and a pressure plate 2.11. The positioning wheel set 2 is mounted on the motor frame 3 through the U-bolt 2.10, and the surface of the wheel is vulcanized with polyurethane. After the wheel is worn, it is compensated by adding a pad under the adjustment bracket 2.4. Among them, the positioning wheel 2.1 is movably arranged at both ends of the axle 2.5 through the bearing 2.2, the adjustment bracket 2.4 is movably sleeved on the axle 2.5 through the bushing 2.3, a pressure plate 2.11 is arranged in the middle of the outer side of the adjustment bracket 2.4, and an adjustment block 2.9 is fixed at the bottom of the adjustment bracket 2.4. The bearing 2.2 is fixed on the bearing flange 2.6 and sealed through the bearing cover 2.7 and the bearing end cover 2.8. The positioning wheel set 2 is mounted on the motor frame 3 through the U-bolt 2.10.

[0044] In some optional embodiments, such as Figure 6 As shown, the motor frame 3 is a steel plate welded structure, which provides an interface for the installation of components such as the linear motor 1, the positioning wheel set 2, and the spiral steel spring 4. The motor frame 3 includes an end beam 3.1, a side beam 3.2, a first cross beam to a third cross beam 3.3 to 3.5, a first motor seat to a second motor seat 3.6 to 3.7, a pad 3.8, a spring seat 3.9, a lifting lug 3.10, a first longitudinal tie rod seat 3.11, a second longitudinal tie rod seat 3.12, a rib plate 3.13, a motor seat plate 3.14, and a transverse tie rod seat 3.15. Among them, the two side beams 3.2 are arranged horizontally at intervals, the first to third cross beams 3.3 to 3.5 are vertically connected between the two side beams 3.2, the end beam 3.1 is fixed to the two ends of the side beam 3.2, the first to second motor seats 3.6 to 3.7 are fixed under the side beam 3.2 for connecting the linear motor 1, the spring seat 3.9 is fixed under the side beam 3.2 for fixing the spiral 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 under the side beam 3.2 for fixing with the longitudinal tie rod 5 and the transverse tie rod 6.

[0045] In some optional embodiments, such as Figure 7As shown, the spiral steel spring 4 comprises 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 adjustment pad 4.6. Among them, the spring 4.3 is sleeved on the inner central guide column of 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 adjustment pad 4.6 are arranged between the lower end surface of the spring 4.3 and the upper end surface of the lower clamping plate 4.1, a clamping plate 4.4 is arranged between the rubber pad 4.5 and the adjustment 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 optional embodiments, such as Figure 8 , Fig. 9 As shown, the longitudinal tie rod 5 and the transverse tie rod 6 both include a rod body, a core shaft is provided at the end of one end of the rod body, the core shaft is fixed to the first longitudinal tie rod seat 3.11 or the second longitudinal tie rod seat 3.12 or the transverse tie rod seat 3.15 by bolts, and the other end of the rod body is fixedly connected to the fastener 8 by bolts, and the fastener 8 is fixed to the mounting boss 7.1 on the upper end surface of the frame 7.

[0047] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in the field.

Claims

1. An air gap protection device for a linear motor of an aerial rail transportation vehicle, comprising a linear motor (1), a positioning wheel pair (2) and a motor frame (3), characterized in that: The linear motor (1) is installed above the motor frame (3), and the front and rear sides of the motor frame (3) are respectively provided with positioning wheel pairs (2). The positioning wheel pairs (2) are in contact with the steel rails laid on the top of the track beam to ensure the air gap of the linear motor. A pre-compressed spiral steel spring (4) is installed between the motor frame (3) and the frame (7). The spiral steel spring (4) compensates for the height change of the frame (7) by changing its height, thereby ensuring that the positioning wheel pairs (2) are in real-time 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 transportation vehicle according to claim 1, characterized in that: A longitudinal pull rod (5) is installed in the horizontal direction between the motor frame (3) and the frame (7) 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 transportation vehicle according to claim 1, characterized in that: The motor frame (3) and the frame (7) are fixedly connected by a transverse pull rod (6) installed in the horizontal direction.

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

5. The air gap protection device for a linear motor of an aerial rail transportation vehicle according to claim 2 or 3, characterized in that: The motor frame (3) comprises a side beam (3.2), a cross beam, a motor seat, a spring seat (3.9), a longitudinal tie rod seat, and a transverse tie rod seat (3.15); two side beams (3.2) are arranged horizontally and spaced apart; at least three cross beams are vertically connected between the two side beams (3.2); at least one motor seat is fixed below the side beam (3.2) for connecting the linear motor (1); the spring seat (3.9) is fixed below the side beam (3.2) for fixing the helical steel spring (4); the longitudinal tie rod seat and the transverse tie rod seat (3.15) are fixed below the side beam (3.2) for fixing 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 transportation vehicle according to claim 5, characterized in that: The longitudinal tie rod (5) and the transverse tie rod (6) both comprise a rod body, the end of one end of the rod body being provided with a core shaft, the core shaft being fixed to the longitudinal tie rod seat and the transverse tie rod seat (3.15) by bolts, the other end of the rod body being fixedly connected to a fastener (8) by bolts, the fastener (8) being fixed to a mounting boss (7.1) on the upper end surface of the frame (7).

7. The air gap protection device for a linear motor of an aerial rail transportation vehicle according to claim 1, characterized in that: The spiral steel spring (4) comprises a lower clamping plate (4.1), an upper clamping plate (4.2), and a spring (4.3) sleeved on a central guide column on the inner side of 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 adjustment pad (4.6) are provided between the lower end surface of the spring (4.3) and the upper end surface of the lower clamping plate (4.1); a clamping plate (4.4) is provided between the rubber pad (4.5) and the adjustment pad (4.6); and 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 transportation vehicle according to claim 1, characterized in that: The helical steel spring (4) is mounted on the end beam of the frame (7).

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

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

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