Linear motor air gap guaranteeing device of sky rail set sports car

Abstract

The utility model discloses a linear motor air gap guaranteeing device of an air rail set sports car. The device comprises a linear motor mover, a linear motor stator, a motor support, a framework, a positioning wheel pair, a compression spring device and a longitudinal pull rod, the linear motor stator is used for being installed at the bottom of the top wall of a box beam, the linear motor mover is located below the linear motor stator, and a fixed gap is kept between the linear motor mover and the linear motor stator; a gap detection sensor is arranged at the end of the linear motor mover, the motor support is connected to the upper portion of the framework in a suspended mode through the compression spring device and the longitudinal pull rod, and the linear motor mover and the positioning wheel pair are installed on the motor support. According to the utility model, the relative position relation of the motor bracket, the pre-compression spring device and the positioning wheel pair of the linear motor is utilized, and the framework, the auxiliary adjusting structure and the detection device are matched, so that the air gap between the rotor and the stator of the linear motor can be conveniently controlled, detected and adjusted.

Description

Technical Field

[0001] This utility model belongs to the field of transportation technology, specifically relating to an air gap protection device for a linear motor of an air-rail integrated vehicle. Background Technology

[0002] With increasingly advanced coal mining techniques, coal transportation from mines often relies on a combination of trucks and railways. Currently, the basic method involves trucks transporting crushed fine coal from the mine to railway storage yards, where it is then transferred to long-distance rail transport. However, truck transport suffers from poor road conditions, long distances, speed restrictions, high maintenance costs due to heavy road loads, significant weather-related disruptions, large fluctuations in transport volume, and overall low efficiency. The emergence of magnetically driven overhead rail systems offers a promising solution for short-to-medium distance coal transshipment.

[0003] Currently, the monorail bogie adopts an integral frame, with the motor, braking equipment, and running wheelset all installed on the same frame. When it is necessary to adjust the air gap between the electronic mover and the stator, some parts of the bogie need to be removed before adjustment can be made, which is complicated and difficult to operate. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the above-mentioned background technology and provide a linear motor air gap protection device for an air-rail integrated moving vehicle.

[0005] The technical solution adopted in this utility model is: a linear motor air gap protection device for an air-rail integrated moving vehicle, including a linear motor mover, a linear motor stator, a motor bracket, a frame, positioning wheelsets, a compression spring device, and a longitudinal tie rod. The linear motor stator is used to install on the bottom of the top wall of the box girder. The linear motor mover is located below the linear motor stator and is fixed to the linear motor stator. A gap detection sensor is provided at the end of the linear motor mover. The motor bracket is suspended above the frame through the compression spring device and the longitudinal tie rod. The linear motor mover and the positioning wheelsets are installed on the motor bracket.

[0006] Furthermore, the motor bracket includes two side beams arranged opposite to each other, connected at the middle by a load-bearing crossbeam, and connected at the ends by an end crossbeam. A large crossbeam is provided between the load-bearing crossbeam and the end crossbeam. A first tie rod seat is provided at the bottom of the end crossbeam, and one end of the longitudinal tie rod is hinged to the first tie rod seat. A spring top plate seat is provided at the bottom of the large crossbeam, and the top of the compression spring device is connected to the spring top plate seat. The side beam located between the large crossbeam and the end crossbeam is recessed to form a recessed portion, and a positioning wheel guide frame seat is provided in the recessed portion. The positioning wheel pair is installed in the positioning wheel guide frame seat. A mover fixing seat is provided at the top of the load-bearing crossbeam and the top of the end crossbeam, and the linear motor mover is installed on the mover fixing seat.

[0007] Furthermore, the positioning wheel guide frame includes a first contact portion and a second contact portion arranged opposite to each other. The first contact portion and the second contact portion respectively fit against the side of the recessed portion. Both the first contact portion and the second contact portion are provided with limiting vertical grooves. A second limiting circular groove is provided between the first contact portion and the second contact portion. A through groove is opened in the center of the second limiting circular groove. An adjusting threaded tube that penetrates the recessed portion is connected to the bottom of the groove.

[0008] Furthermore, the frame includes two double-web longitudinal beams arranged opposite each other, a recessed bearing platform is provided between the middle of the two double-web longitudinal beams, the bearing platform divides the double-web longitudinal beams into two sections, a reinforcing crossbeam is provided between the ends of the two double-web longitudinal beams, a second tie rod seat and a spring fixing seat are provided at the top of the reinforcing crossbeam, the other end of the longitudinal tie rod is movably connected to the second tie rod seat, and the bottom of the compression spring device is connected to the spring fixing seat.

[0009] Furthermore, the spring fixing seat includes a second spring pad fixed to the top of the reinforcing beam. The second spring pad has a through hole in its center, and the reinforcing beam has a through insertion hole at the position corresponding to the through hole.

[0010] Furthermore, the positioning wheel pair includes an axle and positioning wheels fixed to both ends of the axle. The axle has fixing parts located inside the positioning wheels at both ends. Each fixing part includes a bearing, a bearing saddle, a front stop, a rear stop, and a damping spring. The inner ring of the bearing is fixed to the axle. The bearing saddle is in contact with the lower part of the outer ring of the bearing. The front stop and rear stop are respectively located on both sides of the bearing. The side of the bearing saddle is connected to the connecting positioning wheel guide frame of the motor bracket. The damping spring is located at the bottom of the bearing saddle.

[0011] Furthermore, the bottom of the damping spring is provided with a downwardly protruding limiting rod, and several height adjustment shims are fitted on the limiting rod. The side of the bearing saddle is provided with a limiting boss, and several longitudinal adjustment shims are fitted on the limiting boss.

[0012] Furthermore, the compression spring device includes a pre-compression spring, an upper clamping plate, a lower clamping plate, a buffer rubber pad ring, and a pressure-bearing ring with a T-shaped cross-section.

[0013] The bottom surface of the upper clamping plate is provided with a first protruding ring, and the middle part of the bottom surface of the upper clamping plate is provided with a downward pre-tightening screw. The bottom of the pre-tightening screw is provided with a threaded hole, and the top of the pre-compression spring is sleeved on the outside of the first protruding ring and in contact with the bottom surface of the upper clamping plate.

[0014] The top surface of the lower clamping plate is provided with a second protruding ring, and the bottom surface of the lower clamping plate is provided with a protruding pin at the corresponding position of the pre-tightening screw. The pin is provided with a through insertion hole, and the insertion hole and the threaded hole are arranged coaxially. The buffer rubber pad ring is sleeved on the outside of the second protruding ring and contacts the top surface of the lower clamping plate. The pressure bearing ring is sleeved on the outside of the second protruding ring and contacts the top of the buffer rubber pad ring. The bottom of the pre-compression spring is sleeved on the outside of the second protruding ring and contacts the top surface of the pressure bearing ring.

[0015] The beneficial effects of this utility model are as follows:

[0016] This invention utilizes the relative positions of the linear motor's motor bracket, pre-compression spring device, and positioning wheelset on the bogie, along with a framework, auxiliary adjustment structure, and detection device, to achieve convenient control, detection, and adjustment of the air gap between the mover and stator of the linear motor. The detection and adjustment operations are simple, requiring virtually no additional mechanisms and not affecting the bogie's hoisting. Once the bogie is installed in the box girder, removing the fixing components and restoring the linear motor to its floating state is also easily achieved.

[0017] The specially designed structure of this utility model can effectively ensure that a stable air gap is maintained between the mover and stator of the linear motor. When the air gap changes, it can be easily adjusted using a simple device.

[0018] This invention is used in initial assembly, testing, and subsequent adjustments. The device does not affect the bogie's assembly structure. After the entire bogie is assembled, initial adjustments can be made. During bogie operation, a linear motor gap monitoring sensor continuously monitors the air gap between the linear motor's mover and stator. Feedback data from the sensor indicates whether the air gap is too large or too small. If the steel wheels of the positioning wheelset wear out over time (or after wheelset re-turning), causing a persistently small air gap between the linear motor's mover and stator, timely air gap control and adjustment can be performed.

[0019] The adjustment method of this invention is simple, requiring only a specially designed adjustment rod, and is easy to operate without disassembling any parts of the bogie. Due to the small internal space of the box-girder track beam and limited operating space, this method allows for easy release of the compressed state with just a bolt wrench, making it ideal for operation in confined spaces.

[0020] This utility model relates to a linear motor mover and motor bracket that are vertically floating. Through the positioning wheels and the top rail, combined with the counterforce of four sets of pre-compression springs, the positioning wheels are always pressed firmly against the rail. A longitudinal tie rod connects this frame and the motor bracket, ensuring that the motor bracket and the linear motor coil are always directly above the frame, approximately floating above it. The combined action of the positioning wheels, rail, and compression springs results in minimal vertical displacement of the linear motor mover during movement. The compression springs further buffer and adjust the movement, maintaining the effective gap between the linear motor mover and stator within a suitable range, thus ensuring the driving and braking forces of the linear motor. Simultaneously, the floating state effectively avoids the impact of vibration and shock on the linear motor, improving the stability of the driving force and its vibration resistance.

[0021] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural diagram of the present invention applied to a bogie.

[0023] Figure 2 This is a schematic diagram of the planar structure of the present invention applied to a bogie.

[0024] Figure 3 This is a schematic diagram of the present invention installed on a box girder.

[0025] Figure 4 This is a top view of the motor bracket of this utility model.

[0026] Figure 5 This is a bottom view of the motor bracket of this utility model.

[0027] Figure 6 This is a front view of the motor bracket of this utility model.

[0028] Figure 7 This is a perspective view of the motor bracket of this utility model.

[0029] Figure 8 This is a top view of the structure of this utility model.

[0030] Figure 9 This is a front view of the structure of this utility model.

[0031] Figure 10 This is a front perspective view of the structure of this utility model.

[0032] Figure 11 This is a perspective view of the reverse side of the structure of this utility model.

[0033] Figure 12This is a partial perspective view of the structure of this utility model.

[0034] Figure 13 This is a schematic diagram of the positioning wheelset of this utility model.

[0035] Figure 14 This is a cross-sectional view of the compression spring device of this utility model.

[0036] Figure 15 This is a schematic diagram of the compression spring device of this utility model and its cooperation with the pre-tightening bolt.

[0037] Figure 16 This is a partial schematic diagram of the linear motor adjusting the air gap according to this utility model.

[0038] In the diagram, 1-linear motor mover; 2-linear motor stator; 3-gap detection sensor;

[0039] 4-Motor bracket; 4.1-Side beam; 4.1.1-First lifting lug; 4.2-Bearing crossbeam; 4.3-End crossbeam; 4.4-Main crossbeam; 4.5-First tie rod seat; 4.5.1-First fixing plate; 4.5.2-First fixing hole; 4.6-Spring top plate seat; 4.6.1-First limiting circular groove; 4.7-Recessed part; 4.8-Positioning wheel guide frame seat; 4.8.1-First contact part; 4.8.2-Second contact part; 4.8.3-First limiting vertical groove; 4.8.4-Second limiting circular groove; 4.8.5-Sunk groove; 4.8.6-Adjusting threaded pipe; 4.9-Motor fixing seat; 4.9.1-Second fixing plate; 4.9.2-Second fixing hole;

[0040] 5-Frame; 5.1-Double-web longitudinal beam; 5.1.1-Second lifting lug; 5.2-Bearing platform; 5.3-Reinforcing crossbeam; 5.3.1-Interlocking hole; 5.4-Top rail brake mounting seat; 5.4.1-First mounting plate; 5.4.2-First support plate; 5.4.3-Second support plate; 5.4.4-First mounting hole; 5.5-Walking wheel guide frame seat; 5.5.1-First contact plate; 5.5.2-Second contact plate; 5.5.3-Third support plate; 5.5.4-Fourth support plate; 5.5.5-Third limiting circular groove; 5.5.6-Second limiting vertical groove; 5.6-Current receiver mounting seat; 5.6.1-Second mounting plate; 5.6.2-Fifth support plate; 5.6.3-Second mounting hole 5.7-Center pin cylinder; 5.7.1-Upper end; 5.7.2-Lower end; 5.7.3-Guide groove; 5.8-Roller spring limit seat; 5.8.1-Spring retaining ring; 5.8.2-First spring pad; 5.9-Roller swing limit seat; 5.9.1-Third mounting plate; 5.9.2-Sixth support plate; 5.10-Tread brake mounting seat; 5.10.1-Support rod; 5.10.2-Fourth mounting plate; 5.11-Second tie rod seat; 5.11.1-Third fixing plate; 5.11.2-Seventh support plate; 5.11.3-U-shaped groove; 5.11.4-Third fixing hole; 5.12-Spring fixing seat; 5.12.1-Second spring pad; 5.12.2-Through hole.

[0041] 6-Positioning wheel pair; 6.1-Positioning wheel; 6.2-Wheel axle; 6.3-Fixing part; 6.4-Bearing; 6.5-Bearing saddle; 6.6-Front gear; 6.7-Rear gear; 6.8-Damping spring; 6.9-Limiting rod; 6.10-Height adjustment shim; 6.11-Limiting boss; 6.12-Longitudinal adjustment shim; 7-Travel wheel pair; 7.1-Primary suspension spring; 7.2-Travel wheel;

[0042] 8-Compression spring device; 8.1-Pre-compression spring; 8.2-Upper clamping plate; 8.3-Lower clamping plate; 8.4-Buffer rubber pad ring; 8.5-Pressure ring; 8.6-First protruding ring; 8.7-Pre-tightening screw; 8.8-Threaded hole; 8.9-Second protruding ring; 8.10-Pin; 8.11-Insertion hole;

[0043] 9-Longitudinal tie rod; 10-Tread brake; 11-Top rail brake; 12-Current receiver; 13-Central suspension device; 14-Ballast; 15-Box beam; 15.1-Top wall; 15.2-Positioning guide rail; 15.3-Travel guide rail; 15.4-Power supply rail; 16-Pre-tightening bolt; 17-Adjusting rod. Detailed Implementation

[0044] 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.

[0045] It should be understood that the term "and / or" as used in this application specification and the appended claims refers to any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0046] 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.

[0047] References to "one embodiment" or "some embodiments" in this specification mean that one or more embodiments of this application include a specific feature, structure, or characteristic described in connection with that embodiment. Therefore, the phrases "in one embodiment," "in some embodiments," "in other embodiments," "in still other embodiments," etc., appearing in different parts of this specification do not necessarily refer to the same embodiment, but rather mean "one or more, but not all, embodiments," unless otherwise specifically emphasized.

[0048] 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.

[0049] When describing positional relationships, for example, when the positional order is described as "on," "above," "below," and "next," situations where they are not in contact or are in contact may be included, unless words or terms such as "exactly" or "directly" are used. If it is said that the first element is "on" the second element, it does not mean that the first element must be above the second element in the drawing. The upper and lower parts of the components will change depending on the viewing angle and orientation. Therefore, in the drawings or in the actual construction, the situation where the first element is "on" the second element can include situations where the first element is "below" the second element and situations where the first element is "above" the second element.

[0050] like Figure 1-3 The diagram shows the structure of this utility model applied to a linear motor driven bogie. The linear motor driven bogie is a supporting design for magnetic drive type monorail EMU (monorail container transport EMU). This utility model provides a linear motor air gap protection device for monorail EMUs, including a linear motor mover 1, a linear motor stator 2, a motor bracket 4, a frame 5, positioning wheelsets 6, a compression spring device 8, and a longitudinal tie rod 9. The linear motor stator 2 is installed at the bottom of the top wall 15.1 of the box girder 15 (box girder track beam). The linear motor mover 1 is located below the linear motor stator 2 and maintains a fixed gap with the linear motor stator 2. When energized, the current generated in the coil of the linear motor stator 2 generates a magnetic field, which interacts with the permanent magnet on the linear motor mover 1, thereby generating an electromagnetic force that drives the linear motor mover 1 to move in a straight line. Using a linear motor as the drive, stable power can be provided in the drive. The linear motor mover 1 is equipped with gap detection sensors 3 at both ends. The gap detection sensors 3 can detect the air gap between the linear motor mover 1 and the linear motor stator 2 in real time. When the air gap is not within the set range, it can be adjusted in time. The motor bracket 4 is suspended above the frame 5 by the compression spring device 8 and the longitudinal tie rod 9. The linear motor mover 1 and the positioning wheel pair 6 are mounted on the motor bracket 4.

[0051] The motor bracket and frame of this utility model are supported by four sets of compression spring devices and hinged by two longitudinal tie rods. The entire motor bracket and linear motor mover are suspended above the frame by the rebound force of the compression spring devices, the longitudinal tension of the longitudinal tie rods, and the lateral force between the wheel flange and the rail between the upper steel wheel and the rail. By adjusting the relative position of the positioning wheel pair and the motor bracket, the height difference of the air gap between the mover and the stator of the linear motor can be changed. After the steel wheel and the rail wear out, the air gap between the mover and the stator of the linear motor can also be adjusted by adjusting the relative height difference between the motor bracket and the positioning wheel pair.

[0052] Meanwhile, the motor support and linear motor mover rely on the rebound force after pre-compression of the compression spring device, the longitudinal tension of the longitudinal tie rod, and the lateral force between the wheel flange and rail of the upper steel wheel to keep the motor support and linear motor mover in a stable state with six degrees of freedom constrained, and always suspended directly above the frame. Although the rebound force after spring pre-compression changes randomly during movement, the vertical displacement can always be kept within a very small range, and the resulting minimal air gap change will not affect the driving force or electric braking force of the linear motor.

[0053] The main structure of this bogie comprises two parts: a motor bracket 4 and a frame 5. Each device is installed on the motor bracket 4 and the frame 5 respectively. In the vertical direction, four compression spring devices 8 are used to balance and support the motor bracket, making it float and ensuring that the linear motor mover and stator are maintained within a fixed induction gap range. In the longitudinal direction, longitudinal tie rods 9 are used to hinge the frame 5 and the motor bracket 4 to transmit driving force or electric braking force. In the lateral direction, the wheel flange and rail structure of the upper steel wheel and rail combination limit the lateral displacement, which satisfies the small lateral displacement difference between the frame and the linear motor support frame during turning, and also satisfies the synchronicity of the lateral movement of the linear motor support frame and the frame during movement.

[0054] In some embodiments, such as Figure 4-7 As shown, the motor bracket 4 includes two side beams 4.1 arranged opposite to each other. The middle parts of the two side beams 4.1 are connected by a load-bearing crossbeam 4.2, and the ends of the two side beams 4.1 are connected by an end crossbeam 4.3. A large crossbeam 4.4 is provided between the load-bearing crossbeam 4.2 and the end crossbeam 4.3. A first tie rod seat 4.5 is provided at the bottom of the end crossbeam 4.3. One end of the longitudinal tie rod 9 is hinged to the first tie rod seat 4.5. A spring top plate is provided at the bottom of the large crossbeam 4.4. The compression spring device 8 is connected to the spring top plate seat 4.6 at the top. The side beam 4.1 is recessed between the main cross beam 4.4 and the end cross beam 4.3 to form a recessed part 4.7. The recessed part 4.7 is provided with a positioning wheel guide frame seat 4.8. The positioning wheel pair 6 is installed in the positioning wheel guide frame seat 4.8. The top of the bearing cross beam 4.2 and the top of the end cross beam 4.3 are provided with a mover fixing seat 4.9. The linear motor mover 1 is installed on the mover fixing seat 4.9.

[0055] Understandably, the motor bracket 4 is used to support the linear motor mover 1 and the positioning wheel pair 6, and its side beam 4.1 and multiple crossbeams ensure good load-bearing capacity. The recessed portions 4.7 at both ends of the side beam 4.1 and the positioning wheel pair guide frame seats 4.8 set in the recessed portions facilitate the installation of the positioning wheel pair.

[0056] It should be noted that the aforementioned side beam 4.1 is a tubular structure composed of structural plates connected by welding or other methods. The horizontal plates of the tubular structure have protruding edges at their connections to the vertical plates to enhance structural strength. Multiple horizontal beams also have similar structures. For example, the load-bearing horizontal beam 4.2 includes multiple spaced single beams, each composed of horizontal and vertical plates forming an I-beam-like structure, with both ends fixedly connected to the inner sides of the longitudinal beams. That is, both the longitudinal and horizontal beams are structurally irregular, with protruding or recessed edges to function similarly to reinforcing ribs. The outer sides of both ends of the side beam 4.1 are equipped with first lifting lugs 4.1.1. These lugs facilitate the movement of the hoisting motor support and also provide secondary fixation of the bogie when it is installed into the box girder.

[0057] It is understood that the aforementioned first tie rod seat 4.5 is used for hinged connection with the top end of the longitudinal tie rod 9. The first tie rod seat 4.5 includes two first fixing plates 4.5.1, each of which is provided with two first fixing holes 4.5.2. The longitudinal tie rod 9 is connected to the first fixing holes 4.5.2 by bolts. The spring top plate seat 4.6 contacts the top surface of the upper clamping plate 8.2 of the compression spring device 8 and is used to limit the displacement of the compression spring device 8 in all directions. The spring top plate seat 4.6 includes a first limiting circular groove 4.6.1, which can be formed by a retaining ring provided on the surface of the large crossbeam 4.4 or by a recess on the surface of the large crossbeam 4.4. Two mover fixing seats 4.9 are provided on each end crossbeam 4.3 and two mover fixing seats 4.9 are provided on the bearing crossbeam. To ensure structural strength, the two mover fixing seats 4.9 on the bearing crossbeam are installed on the same base plate. The mover fixing seat 4.9 includes a second fixing plate 4.9.1. The second fixing plate 4.9.1 is provided with two second fixing holes 4.9.2. It is fixedly connected to the linear motor mover 1 through the second fixing holes 4.9.2 and bolts.

[0058] It is understood that the aforementioned positioning wheel guide frame seat 4.8 has four parts, each for mounting four positioning wheels (two positioning wheel pairs). Its structural design facilitates the installation of positioning wheel pairs 6 while also enabling the adjustment of the air gap of the linear motor. It includes a first contact part 4.8.1 and a second contact part 4.8.2 arranged opposite to each other. The first contact part 4.8.1 and the second contact part 4.8.2 respectively fit against the side of the recessed part 4.7. The middle of the first contact part 4.8.1 and the second contact part 4.8.2 is provided with a first limiting vertical groove 4.8.3. The first limiting vertical groove 4.8.3 divides the corresponding contact part into two wedge-shaped structures. A second limiting circular groove 4.8.4 is provided between the first contact part 4.8.1 and the second contact part 4.8.2. The second limiting circular groove 4.8.4 has a through groove 4.8.5 in its center. The bottom of the groove 4.8.5 is connected to an adjusting threaded tube 4.8.6 that penetrates the recessed part 4.7.

[0059] When installing the positioning wheelset 6, the bearing saddle 6.5 on the positioning wheelset 6 engages between the first contact part 4.8.1 and the second contact part 4.8.2, and the limiting boss 6.11 cooperates with the first limiting vertical groove 4.8.3 to limit the lateral displacement of the positioning wheelset; the bottom end of the damping spring 6.8 at the bottom of the bearing saddle 6.5 cooperates with the second limiting circular groove 4.8.4, and the limiting rod 6.9 is located in the recess 4.8.5. To ensure installation accuracy, several longitudinal adjusting shims 6.12 can be set between the limiting boss 6.11 and the corresponding contact part, and several height adjusting shims 6.10 can be set between the limiting rod 6.9 and the second limiting circular groove 4.8.4; the adjusting threaded tube 4.8.6 at the bottom of the recess 4.8.5 facilitates the insertion of the adjusting rod 17 when adjusting the air gap, and the top of the adjusting rod 17 abuts against the bottom of the limiting rod 6.9.

[0060] In some embodiments, such as Figure 8-12 As shown, the above-mentioned frame 5 includes two double-web longitudinal beams (i.e., double longitudinal beams) 5.1 arranged opposite to each other. A recessed bearing platform 5.2 is provided between the middle of the two double-web longitudinal beams 5.1. The bearing platform 5.2 divides each double-web longitudinal beam 5.1 into two sections. A reinforcing crossbeam 5.3 is provided between the ends of the two double-web longitudinal beams 5.1. Tread brake mounting seats 5.10 for mounting tread brakes 10 are respectively provided on both sides of the bottom of the reinforcing crossbeam 5.3. A second tie rod seat 5.11 is provided at the inner end of the top of the reinforcing crossbeam 5.3. A spring fixing seat 5.12 is provided at the top of the reinforcing crossbeam 5.3.

[0061] It is understood that the double-web longitudinal beam 5.1 is a double longitudinal sealed-plate cavity beam formed by connecting plate-like structures, with various specifications of stiffening plates inside. The position 5.1.2 where the double-web longitudinal beam 5.1 connects to the bearing platform 5.2 is a downwardly curved arc structure with a smooth transition, enhancing the load-bearing capacity of the frame. The double-web longitudinal beam is structurally non-uniform, with protruding or concave edges to achieve a function similar to stiffening plates. The reinforcing crossbeam is a hollow tubular structure. A second lifting lug 5.1.1 is provided at the connection position between the top of the double-web longitudinal beam 5.1 and the reinforcing crossbeam. The second lifting lug 5.1.1 facilitates the movement of the lifting frame and also provides secondary fixation for the bogie when it is installed into the box girder.

[0062] It is understood that the bearing platform 5.2 is a hollow square frame structure formed by connecting plate-like structures. The current collector mounting base 5.6 is set on both sides of the top of the bearing platform. The central pin cylinder 5.7 penetrates the bearing platform. The rocker spring limiting seat 5.8 is set on the top of the bearing platform. The rocker swing limiting seat 5.9 is set at the position where the top of the bearing platform connects with the double web longitudinal beam.

[0063] It is understood that the second tie rod seat 5.11 is used to be hinged to the other end of the longitudinal tie rod 9. It includes an L-shaped third fixing plate 5.11.1 and a seventh support plate 5.11.2. The bottom of the third fixing plate 5.11.1 is fixed to the top of the reinforcing beam 5.3. A U-shaped groove 5.11.3 is opened in the middle of the side of the third fixing plate 5.11.1. Third fixing holes 5.11.4 are respectively provided on both sides of the side of the third fixing plate 5.11.1. The seventh support plate 5.11.2 is vertically fixed on the third fixing plate 5.11.1.

[0064] It is understood that the spring fixing seat 5.12 includes a second spring pad 5.12.1 fixed to the top of the reinforcing beam 5.3. The second spring pad 5.12.1 has a through hole 5.12.2 in its center, and the reinforcing beam 5.3 has a through insertion hole 5.3.1 at a position corresponding to the through hole. The spring fixing seat 5.12 is used to connect to the bottom of the compression spring device 8. During installation, the lower clamping plate 8.3 of the compression spring device 8 contacts the second spring pad 5.12.1, and the pin 8.10 passes through the through hole 5.12.2 and is inserted into the insertion hole 5.3.1 on the reinforcing beam 5.3. When it is necessary to adjust the air gap of the linear motor or install the bogie, the pre-tightening bolt 16 can be connected to the compression spring device 8 through the spring fixing seat 5.12 to compress its height.

[0065] When this utility model is applied to a bogie, the frame is also equipped with a traveling wheel pair 7, a tread brake 10, a top rail brake 11, a current collector 12, and a center suspension device 13. After the bogie is installed into the box girder, the positioning wheel 6.1 of the positioning wheel pair 6 is engaged with the positioning guide rail 15.2, and the traveling wheel 7.2 of the traveling wheel pair 7 is engaged with the traveling guide rail 15.3. The frame is equipped with fixed seats for the traveling wheelset 7, tread brake 10, top rail brake 11, current collector 12, and central suspension device 13. Specifically, the top two ends of the double-web longitudinal beam (5.1) are respectively provided with top rail brake mounting seats (5.4) for installing the top rail brake, and the bottom two ends of the double-web longitudinal beam (5.1) are respectively provided with traveling wheel guide frame seats (5.5) for installing the traveling wheelset; the two sides of the bearing platform (5.2) are respectively provided with current collector mounting seats (5.6) for installing the current collector, and the middle of the bearing platform (5.2) is provided with a central pin cylinder (5.7) for installing the central suspension device. The central pin cylinder (5.7) is surrounded by multiple bolster spring limit seats (5.8) and multiple bolster swing limit seats (5.9); the bottom two sides of the reinforcing crossbeam (5.3) are respectively provided with tread brake mounting seats (5.10) for installing the tread brake.

[0066] The frame 5 of this embodiment is different from the frame of an ordinary freight train bogie. This frame adopts double longitudinal beams with double webs and strengthened cross beams at both ends. The middle part of the whole frame is concave, serving as a bearing platform for the center suspension of the bolster. There is a tread brake mounting arm at each of the four end corners, and a mounting bracket for top rail brake is provided on the side of the middle part from the center to the end of the longitudinal beam. The whole frame looks like an "M" shape when viewed from the front and an "O" shape when viewed from above. The whole structure has good stability and strong bearing capacity. Two types of brake units are arranged on the frame. There are 8 installation positions for brake units on the frame, including 4 installation positions for tread brakes of steel wheels and 4 installation positions for top rail brakes of parking brakes, which has obvious advantages in braking performance compared with traditional trains during transportation on large slopes.

[0067] The compression spring device 8 contacts the component 5. However, in order to keep the spring stable and immovable, a plug-in hole 5.3.1 is provided on the strengthened cross beam 5.3 of the frame to prevent the horizontal movement of the spring. At the same time, through the through plug-in hole 5.3.1, when initially installed, the pre-compressed spring device can be compressed to a certain height by using a long pre-tightening bolt, which is convenient for the whole bogie to be installed into the box-shaped track beam.

[0068] It can be understood that the top rail brake mounting seat 5.4 includes a first mounting plate 5.4.1, a first support plate 5.4.2 and several second support plates 5.4.3. Several first mounting holes 5.4.4 for installing the top rail brake are provided on the first mounting plate 5.4.1. The first mounting plate 5.4.1 is fixedly parallel to the outer plate of the double-web longitudinal beam. The first support plate 5.4.2 is vertically fixed to one side of the first mounting plate 5.4.1, and the bottom of the first support plate 5.4.2 is fixedly connected to the double-web longitudinal beam. The second support plates 5.4.3 are fixed to the inner side of the first mounting plate 5.4.1 and perpendicular to the top of the first mounting plate 5.4.1 and the double-web longitudinal beam. By supporting the first mounting plate 5.4.1 through the first support plate 5.4.2 and the second support plates 5.4.3, the stability of the installation of the top rail brake can be ensured.

[0069] Understandably, to facilitate regular disassembly and maintenance and quick assembly of the wheelsets, a travel wheel guide frame seat 5.5 consisting of two irregularly shaped fixed stops is adopted, with a total of four in two sets. The primary suspension spring 7.1 of the wheelset and the wheelset can be quickly installed into the guide frame seat. Compared with traditional bogies, disassembling and replacing the wheelset and primary suspension spring device becomes extremely convenient. Specifically, the travel wheel guide frame seat 5.5 includes an irregularly shaped first contact plate 5.5.1 and a second contact plate 5.5.2 arranged opposite to each other. A third limiting circular groove 5.5.5 is provided between the first contact plate 5.5.1 and the second contact plate 5.5.2. A third support plate 5.5.3 is vertically fixed on the side of the first contact plate 5.5.1 away from the second contact plate 5.5.2. A fourth support plate 5.5.4 is vertically fixed on the side of the second contact plate 5.5.2 away from the first contact plate 5.5.1. Both the first contact plate 5.5.2 and the second contact plate are provided with a second limiting vertical groove 5.5.6 with a top opening. When installing the wheelset, the primary spring device of the wheelset (i.e., the bearing saddle, damping spring, etc.) is engaged between the first contact plate 5.5.1 and the second contact plate 5.5.2. The limiting boss cooperates with the second limiting vertical groove 5.5.6 to limit the lateral displacement of the wheelset. The bottom end of the damping spring at the bottom of the bearing saddle cooperates with the third limiting circular groove 5.5.5. To ensure installation accuracy, several longitudinal adjustment shims can be set between the limiting boss and the corresponding contact part, and several height adjustment shims can be set between the limiting rod and the third limiting circular groove.

[0070] Understandably, the current collector mounting base 5.6 can fix and adjust the position of the current collector 12, so that the current collector 12 maintains constant contact with the third rail (power supply rail 15.4) on the track beam to supply power to the linear motor. Specifically, the current collector mounting base 5.6 includes a second mounting plate 5.6.1 and several fifth support plates 5.6.2. The second mounting plate 5.6.1 is provided with several second mounting holes 5.6.3. The second mounting plate 5.6.1 is vertically fixed to one side edge of the top of the bearing platform 5.2. The fifth support plates 5.6.2 are vertically fixed to the sides and bottom of the second mounting plate 5.6.1.

[0071] It should be noted that, in order to achieve the assembly and connection between the frame 5 and the central suspension device 13, and for shock absorption, a spring pad and a retaining ring are provided on the concave platform in the middle of the frame 5. The lower end of the bolster rubber spring contacts the spring pad and is horizontally restricted within the spring retaining ring. The upper end of the rubber spring supports the upper end of the bolster and the central pin, and is also restricted by the spring pad and the retaining ring for horizontal displacement. The central pin vertically passes through the center of the frame, and a central pin cylinder is provided at the center of the frame. There is a shock-absorbing and limiting annular ball joint rubber sleeve between the central pin cylinder and the central pin. The bolster and the central pin are connected to the frame by rubber springs, and the central pin is connected to the central sleeve of the central pin cylinder of the frame by a ball joint rubber sleeve, avoiding direct contact between steel and steel, while ensuring that the central suspension device can have slight displacement in each degree of freedom.

[0072] It is understood that the center pin cylinder 5.7 is a stepped hole with a larger diameter at the lower end 5.7.2 and a smaller diameter at the upper end 5.7.1. Multiple axially arranged guide grooves 5.7.3 are provided at intervals along the circumference of the upper end hole wall. When installing the center suspension device 13, the center pin passes through the center pin cylinder, and an annular ball joint rubber sleeve is fitted between them. The ball joint rubber sleeve and the center pin cylinder are interference-fitted. The lower half of the center pin cylinder in contact with the ball joint rubber sleeve has a larger diameter than the upper half, forming a step that abuts against the upper end face of the ball joint rubber sleeve, preventing the center suspension device from moving upwards during sudden braking of the vehicle. Rectangular grooves are opened in four directions on the upper half of the center pin cylinder to facilitate the replacement of the ball joint rubber sleeve by external force pushing out the lower half of the center pin cylinder.

[0073] It is understood that the rocker spring limiting seat 5.8 provided on the bearing platform 5.2 is used to limit the horizontal displacement of the cylindrical rubber spring. Specifically, the rocker spring limiting seat 5.8 includes a spring retaining ring 5.8.1 protruding from the surface of the bearing platform and a first spring pad 5.8.2. The spring retaining ring 5.8.1 is arranged around the first spring pad 5.8.2. The spring retaining ring limits the horizontal displacement, and the spring pad is a rubber pad, which plays a buffering role and also avoids contact with the steel structure. The bolster swing limit seats 5.9 are set around the bearing platform 5.2. The rubber blocks on them are used to buffer the bolster swing during movement and prevent direct impact on the steel structure. Specifically, the bolster swing limit seats 5.9 include a third mounting plate 5.9.1, a sixth support plate 5.9.2 and rubber blocks (not shown in the figure). The third mounting plate 5.9.1 is vertically fixed to the top of the bearing platform. The sixth support plate 5.9.2 is vertically fixed to the side of the third mounting plate 5.9.1 away from the central pin cylinder, and is connected to the top surface of the longitudinal beam and the first support plate to enhance structural stability. The rubber blocks are fixed to the third mounting plate.

[0074] It is understood that the tread brake mounting base 5.10 is used to install the tread brake 10, which includes a downwardly angled support rod 5.10.1 and a fourth mounting plate 5.10.2. The top of the support rod 5.10.1 is fixed to the bottom of the reinforcing crossbeam 5.3, and the fourth mounting plate 5.10.2 is fixed to the outer side of the bottom of the support rod 5.10.1. The fourth mounting plate 5.10.2 is provided with a plurality of third mounting holes.

[0075] In some embodiments, such as Figure 13As shown, the positioning wheel pair 6 includes an axle 6.2 and positioning wheels 6.1 fixed to both ends of the axle. The axle 6.2 has fixing parts 6.3 located inside the positioning wheels at both ends. Each fixing part 6.3 includes a bearing 6.4, a bearing saddle 6.5, a front stop 6.6, and a rear stop 6.7. The inner ring of the bearing 6.4 is fixed to the axle 6.2. The bearing saddle 6.5 is in contact with or press-fitted to the lower part of the outer ring of the bearing 6.4. The front stop 6.6 and the rear stop 6.7 are respectively located on both sides of the bearing 6.4 and are limited by the inner limiting step of the axle and the inner surface of the positioning wheels. The bottom and side of the bearing saddle 6.5 are connected to the positioning wheel guide frame seat 4.8 of the motor bracket 4. The bottom of the shock-absorbing spring 6.8 at the bottom of the bearing saddle 6.5 is provided with a downward protruding limiting rod 6.9. Several height adjustment shims 6.10 are fitted on the limiting rod 6.9. The side of the bearing saddle 6.8 is provided with a limiting boss 6.11. Several longitudinal adjustment shims 6.12 are fitted on the limiting boss 6.11.

[0076] It should be noted that the structure of the traveling wheel pair 7 and the positioning wheel pair 6 is basically the same. The difference is that the positioning wheel pair 6 needs to be adjusted when the air gap of the linear motor is adjusted, while the traveling wheel pair does not have this function. Therefore, the positioning wheel pair 6 has a limit rod 6.9 at the bottom of the bearing saddle, while the traveling wheel pair 7 does not have a limit rod at the bottom.

[0077] In some embodiments, such as Figure 14 As shown, the compression spring device 8 includes a pre-compression spring 8.1, an upper clamping plate 8.2, a lower clamping plate 8.3, a buffer rubber pad 8.4 ring, and a T-shaped bearing ring 8.5. The bottom surface of the upper clamping plate 8.2 is provided with a first protruding ring 8.6, and the middle of the bottom surface of the upper clamping plate 8.2 is provided with a downward pre-tightening screw 8.7. The bottom of the pre-tightening screw 8.7 is provided with a long threaded hole 8.8. The top of the pre-compression spring 8.1 is fitted outside the first protruding ring 8.6 and contacts the bottom surface of the upper clamping plate 8.2; the top surface of the lower clamping plate 8.3 is provided with a second protruding ring 8. 9. A protruding pin 8.10 is provided on the bottom surface of the lower clamping plate 8.3 corresponding to the position of the pre-tightening screw 8.7. A through insertion hole 8.11 is provided on the pin 8.10. The insertion hole 8.11 is coaxially arranged with the threaded hole 8.8. The buffer rubber pad ring 8.4 is sleeved outside the second protruding ring 8.9 and contacts the top surface of the lower clamping plate 8.3. The pressure bearing ring 8.5 is sleeved outside the second protruding ring 8.9 and contacts the top of the buffer rubber pad ring 8.4. The bottom of the pre-compression spring 8.1 is sleeved outside the second protruding ring 8.9 and contacts the top surface of the pressure bearing ring 8.5.

[0078] When the compression spring device 8 is in its normal state on the bogie, the bottom end of its preload screw 8.7 is located inside the second protruding ring 8.9 and is spaced a certain distance from the top surface of the lower clamping plate 8.3 or flush with the top surface of the second protruding ring 8.9. When compression of the compression spring device 8 is required, a long preload bolt 16 is inserted through the insertion hole 8.11, and the top of the preload bolt 16 mates with the threaded hole 8.8. The deeper the preload bolt 16 is screwed in, the greater the compression height of the compression spring device 8. Figure 15 The diagram shows the pre-tightening bolt 16 being screwed into the compression spring device 8. The length of the threaded hole in the diagram is only for illustration and is actually determined based on the possible compression height of the compression spring device.

[0079] After the linear motor air gap protection device of the aforementioned monorail EMU is installed on the bogie, it is necessary to ensure that the air gap between the linear motor stator and the linear motor mover is within the set range during initial assembly and subsequent adjustments. During initial assembly, the height of the motor bracket 4 may be too high or too low, resulting in the distance between the linear motor mover 1 and the linear motor stator 2 being too small or too large. During subsequent adjustments, due to wear or refining of the positioning wheels, the height of the motor bracket may increase slightly, resulting in the distance between the linear motor mover and the linear motor stator being too small. In either case, the air gap needs to be adjusted.

[0080] It is understandable that the air gap adjustment of the aforementioned linear motor air gap protection device, including the air gap adjustment during initial assembly, may have a large air gap deviation during initial assembly. Therefore, it is necessary to use the pre-tightening bolt 16 to highly compress the compression spring device 8 to achieve this. The process is as follows:

[0081] The actual air gap (including both ends of the linear motor stator and mover) between the linear motor mover 1 and the linear motor stator 2 is detected by the gap detection sensor 3, and the actual air gap is compared with the set air gap range.

[0082] If the actual air gap at the corresponding end exceeds the set air gap range, record the difference, and pass the pre-tightening bolt 16 through the insertion hole 5.3.1 of the reinforcing beam 5.3 of the frame 5, and screw it into the compression spring device 8 to highly compress the compression spring device. The screwing state of the pre-tightening bolt 16 is shown in the figure. Figure 15 The compression of the spring device provides a coarse adjustment to the height of the motor bracket, followed by a fine adjustment after the height of the motor bracket has decreased partially. "Exceeding the set air gap range" means that the actual air gap is greater than the upper limit of the set air gap range or less than the lower limit of the set air gap range.

[0083] Screw the specially designed adjusting rod 17, which mates with the adjusting threaded tube 4.8.6, into the adjusting threaded tube 4.8.6 of the positioning wheel guide frame seat 4.8 on the motor bracket 4, as shown in Figure 16. This lifts up the positioning wheel pair 6. Based on the initial air gap error, add or remove several height adjusting shims 6.10 in the second limiting groove 4.8.4 of the positioning wheel guide frame seat 4.8. This allows adjustment of the air gap between the linear motor mover and stator by adjusting the height of the positioning wheel pair relative to the motor bracket. Here, lifting the positioning wheel pair 6 does not mean that the height of the positioning wheel pair increases, but rather that it increases relative to the motor bracket. Because the top of the positioning wheel is in contact with the positioning guide rail of the box beam, its height will not change. Therefore, when adjusting the adjusting rod 17, the height of the motor bracket 4 decreases, and the height of the positioning wheel pair 6 increases relative to the motor bracket. At this point, since the adjusting rod 17 is pressing against the positioning wheel pair, there is a certain distance between the shock-absorbing spring 6.8 of the positioning wheel pair and the second limiting groove 4.8.4 of the positioning wheel guide frame seat. Therefore, an appropriate number of height adjusting shims 6.10 can be added or removed. The number of height adjusting shims added or removed is determined based on the difference between the actual air gap and the set air gap range detected initially. If the actual air gap is greater than the upper limit of the set air gap range, the difference is the difference between the actual air gap and the upper limit of the set air gap range; if the actual air gap is less than the lower limit of the set air gap range, the difference is the difference between the upper limit of the set air gap range and the actual air gap.

[0084] After adding or removing the height adjustment shims, unscrew the adjustment rod 17. The positioning wheel pair 6 falls back into the positioning wheel guide frame seat 4.8. In other words, the height of the motor bracket is raised, and the positioning wheel guide frame seat rises and engages with the positioning wheel. Then, unscrew the pre-tightening bolt to release the height compression of the compression spring device and complete the air gap adjustment.

[0085] It is understandable that the aforementioned air gap adjustment also includes air gap adjustment after the positioning wheel is worn or re-machined. After the positioning wheel is worn or re-machined, the air gap between the linear motor's mover and stator will inevitably be smaller than the normal air gap distance. Its adjustment is simpler than the initial adjustment, requiring no high compression of the compression spring device; it can be achieved directly with a specially designed adjusting rod. The process is as follows:

[0086] The actual air gap between the linear motor mover 1 and the linear motor stator 2 is detected by the gap detection sensor 3, and the actual air gap is compared with the set air gap range.

[0087] If the actual air gap exceeds the set air gap range, screw the adjusting rod 17 into the adjusting threaded tube 4.8.6 of the positioning wheel guide frame seat 4.8 on the motor bracket 4 to lift and raise the positioning wheel pair 6. Since the air gap is generally smaller after the positioning wheel is worn or reworked, add several height adjusting shims in the second limiting circular groove 4.8.4 of the positioning wheel guide frame seat. Of course, there may be special cases that cause the air gap to be larger, in which case several adjusting shims need to be removed. At the same time, due to the wear or rework of the positioning wheel, the distance between the bearing saddle side of the positioning wheel pair and the first contact part and / or the second contact part may increase. In this case, it is necessary to add an appropriate number of longitudinal adjusting shims 6.12 between the bearing saddle side and the first contact part and / or the second contact part. The recessed groove reserved in the second limiting circular groove can ensure that the wheel pair will not shift after the height adjusting shims are added.

[0088] After adding or removing the height adjustment shim and the longitudinal adjustment shim, unscrew the adjustment rod, and the positioning wheel pair falls back into the positioning wheel guide frame seat, completing a single air gap adjustment;

[0089] If the actual air gap still does not meet the requirements after a single adjustment, repeat the above steps until the actual air gap is within the set air gap range.

[0090] It should be noted that the above air gap adjustment method is simple, requiring only the use of a specially designed adjusting rod (such as...). Figure 16 This can be achieved (as shown in the diagram), and the operation is convenient, requiring no disassembly of any bogie components. Due to the small space inside the box girder, operating space is limited. After compression, this method only requires a bolt wrench to release the compressed state, making it ideal for operation in confined spaces.

[0091] 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. A linear motor air gap protection device for a monorail integrated moving vehicle, characterized in that: The system includes a linear motor mover (1), a linear motor stator (2), a motor bracket (4), a frame (5), a positioning wheel pair (6), a compression spring device (8), and a longitudinal tie rod (9). The linear motor stator (2) is installed at the bottom of the top wall of the box girder. The linear motor mover (1) is located below the linear motor stator (2) and maintains a fixed gap with the linear motor stator (2). A gap detection sensor (3) is provided at the end of the linear motor mover (1). The motor bracket (4) is suspended above the frame (5) through the compression spring device (8) and the longitudinal tie rod (9). The linear motor mover (1) and the positioning wheel pair (6) are installed on the motor bracket (4).

2. The linear motor air gap protection device for the air-rail integrated moving vehicle according to claim 1, characterized in that: The motor bracket (4) includes two side beams (4.1) arranged opposite to each other. The middle parts of the two side beams (4.1) are connected by a load-bearing crossbeam (4.2), and the ends of the two side beams (4.1) are connected by an end crossbeam (4.3). A large crossbeam (4.4) is provided between the load-bearing crossbeam (4.2) and the end crossbeam (4.3). A first tie rod seat (4.5) is provided at the bottom of the end crossbeam (4.3). One end of the longitudinal tie rod is hinged to the first tie rod seat. The bottom of the large crossbeam (4.4) A spring top plate seat (4.6) is provided in the part, and the top of the compression spring device is connected to the spring top plate seat. The side beam (4.1) located between the main cross beam (4.4) and the end cross beam (4.3) is recessed to form a recess (4.7). A positioning wheel guide frame seat (4.8) is provided in the recess, and the positioning wheel pair is installed in the positioning wheel guide frame seat. A mover fixing seat (4.9) is provided on the top of the bearing cross beam (4.2) and the top of the end cross beam (4.3), and the linear motor mover is installed on the mover fixing seat.

3. The linear motor air gap protection device for the air-rail integrated moving vehicle according to claim 2, characterized in that: The positioning wheel guide frame seat (4.8) includes a first contact portion (4.8.1) and a second contact portion (4.8.2) arranged opposite to each other. The first contact portion (4.8.1) and the second contact portion (4.8.2) respectively fit against the side of the recessed portion. The first contact portion (4.8.1) and the second contact portion (4.8.2) are each provided with a first limiting vertical groove (4.8.3). A second limiting circular groove (4.8.4) is provided between the first contact portion (4.8.1) and the second contact portion (4.8.2). A through groove (4.8.5) is opened in the center of the second limiting circular groove (4.8.4). The bottom of the groove (4.8.5) is connected to an adjusting threaded tube (4.8.6) that penetrates the recessed portion.

4. The linear motor air gap protection device for the air-rail integrated moving vehicle according to claim 1, characterized in that: The frame (5) includes two double-web longitudinal beams (5.1) arranged opposite to each other. A recessed bearing platform (5.2) is provided between the middle of the two double-web longitudinal beams (5.1). The bearing platform divides the double-web longitudinal beams into two sections. A reinforcing crossbeam (5.3) is provided between the ends of the two double-web longitudinal beams. A second tie rod seat (5.11) and a spring fixing seat (5.12) are provided on the top of the reinforcing crossbeam (5.3). The other end of the longitudinal tie rod (9) is movably connected to the second tie rod seat (5.11). The bottom of the compression spring device (8) is connected to the spring fixing seat (5.12).

5. The linear motor air gap protection device for the air-rail integrated moving vehicle according to claim 4, characterized in that: The spring fixing seat (5.12) includes a second spring pad (5.12.1) fixed to the top of the reinforcing beam (5.3). The second spring pad (5.12.1) has a through hole (5.12.2) in the center. The reinforcing beam (5.3) has a through insertion hole (5.3.1) at the position corresponding to the through hole.

6. The linear motor air gap protection device for the air-rail integrated moving vehicle according to claim 1, characterized in that: The positioning wheel pair (6) includes an axle (6.2) and positioning wheels (6.1) fixed to the two ends of the axle (6.2). The axle (6.2) has a fixing part (6.3) located inside the positioning wheel at both ends. The fixing part (6.3) includes a bearing (6.4), a bearing saddle (6.5), a front stop (6.6), a rear stop (6.7), and a damping spring (6.8). The inner ring of the bearing (6.4) is fixed to the axle (6.2). The bearing saddle (6.5) is in contact with the lower part of the outer ring of the bearing (6.4). The front stop (6.6) and the rear stop (6.7) are respectively located on both sides of the bearing (6.4). The side of the bearing saddle (6.5) is connected to the positioning wheel guide frame seat of the motor bracket (4). The damping spring (6.8) is located at the bottom of the bearing saddle.

7. The linear motor air gap protection device for the air-rail integrated moving vehicle according to claim 6, characterized in that: The bottom of the damping spring (6.8) is provided with a downward protruding limiting rod (6.9), and a number of height adjusting shims (6.10) are fitted on the limiting rod (6.9). The side of the bearing saddle (6.5) is provided with a limiting boss (6.11), and a number of longitudinal adjusting shims (6.12) are fitted on the limiting boss (6.11).

8. The linear motor air gap protection device for the air-rail integrated moving vehicle according to claim 1, characterized in that: The compression spring device (8) includes a pre-compression spring (8.1), an upper clamping plate (8.2), a lower clamping plate (8.3), a buffer rubber pad ring (8.4), and a T-shaped pressure-bearing ring (8.5). The bottom surface of the upper clamping plate (8.2) is provided with a first protruding ring (8.6), and the middle of the bottom surface of the upper clamping plate (8.2) is provided with a downward pre-tightening screw (8.7). The bottom of the pre-tightening screw (8.7) is provided with a threaded hole (8.8). The top of the pre-compression spring (8.1) is sleeved on the outside of the first protruding ring (8.6) and contacts the bottom surface of the upper clamping plate (8.2). The top surface of the lower clamping plate (8.3) is provided with a second protruding ring (8.9), and the bottom surface of the lower clamping plate (8.3) is provided with a protruding pin (8.10) corresponding to the position of the pre-tightening screw (8.7). The pin (8.10) is provided with a through insertion hole (8.11). The insertion hole (8.11) and the threaded hole (8.8) are arranged coaxially. The buffer rubber pad ring (8.4) is sleeved outside the second protruding ring (8.9) and contacts the top surface of the lower clamping plate (8.3). The pressure bearing ring (8.5) is sleeved outside the second protruding ring (8.9) and contacts the top of the buffer rubber pad ring (8.4). The bottom of the pre-compression spring (8.1) is sleeved outside the second protruding ring (8.9) and contacts the top surface of the pressure bearing ring (8.5).

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