Linear motor air gap guaranteeing device and adjusting method for sky-rail-set sports car

Abstract

The invention discloses a linear motor air gap guaranteeing device and an adjusting method 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 invention, the air gap between the rotor and the stator of the linear motor can be conveniently controlled, detected and adjusted by using the relative position relation of the motor bracket, the pre-compression spring device and the positioning wheel pair of the linear motor and cooperating with the framework, the auxiliary adjusting structure and the detection device.

Description

Technical Field

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

[0002] The domestic coal mining level is getting higher and higher, and the coal transported out of the coal mining plant is mostly transported by car and rail. At present, the basic coordination of coal mining is to transport the crushed fine coal from the coal mining area to the railway yard by car, and then convert it into long-distance railway transportation at the railway yard. The road conditions for car transportation are poor, the distance is long, the speed is limited, the maintenance cost of long-term heavy load on the road is high, the car transportation is greatly affected by weather factors, the regular transportation volume fluctuates greatly, and the overall efficiency is low. The emergence of magnetic drive sky rail is a good direction for solving the short-distance transportation of coal.

[0003] At present, the sky rail bogie adopts an integral frame, and the motor, brake equipment, running wheel pair and other structures are all installed on the same frame. When the air gap between the electronic mover and the stator needs to be adjusted, some parts on the bogie need to be removed before adjustment. The adjustment method is complicated and difficult to operate. Summary of the invention

[0004] 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 and an adjustment method for a linear motor of an empty rail integrated motion vehicle.

[0005] The technical solution adopted by the present invention is: a linear motor air gap guarantee device for an empty rail integrated motion vehicle, comprising a linear motor mover, a linear motor stator, a motor bracket, a frame, a positioning wheel pair, a compression spring device and a longitudinal pull rod, wherein the linear motor stator is used to be installed at the bottom of the top wall of the box beam, 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 and connected above the frame 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 bracket.

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

[0007] Furthermore, the positioning wheel guide frame seat includes a first contact portion and a second contact portion arranged relatively to each other, the first contact portion and the second contact portion respectively fit the side surfaces of the recessed portion, a limiting vertical groove is provided on the first contact portion and the second contact portion, a second limiting circular groove is provided between the first contact portion and the second contact portion, a through recessed groove is provided at the center of the second limiting circular groove, and an adjusting threaded tube that passes through the recessed portion is connected to the bottom of the recessed groove.

[0008] Furthermore, the frame includes two double-web longitudinal beams arranged opposite to each other, a concave bearing platform is provided between the middle parts of the two double-web longitudinal beams, the bearing platform divides the double-web longitudinal beams into two sections, a reinforcing cross beam is provided between the ends of the two double-web longitudinal beams, a second tie rod seat and a spring fixing seat are provided on the top of the reinforcing cross beam, 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, a through hole is opened in the center of the second spring pad, and a penetrating plug hole is provided on the reinforcing beam at a position corresponding to the through hole.

[0010] Furthermore, the positioning wheel pair includes a wheel axle and positioning wheels respectively fixed to two ends of the wheel axle, and fixing parts are respectively provided at both ends of the wheel axle on the inner side of the positioning wheels, and the fixing parts include bearings, load-bearing saddles, front gears, rear gears and shock-absorbing springs. The inner ring of the bearing is fixed on the wheel axle, and the load-bearing saddle is in contact with and connected to the lower part of the outer ring of the bearing. The front gear and the rear gear are respectively arranged on both sides of the bearing, and the side of the load-bearing saddle is connected to the positioning wheel guide frame connected to the motor bracket, and the shock-absorbing spring is arranged at the bottom of the load-bearing saddle.

[0011] Furthermore, a downwardly protruding limiting rod is provided at the bottom of the damping spring, a plurality of height adjustment gaskets are sleeved on the limiting rod, and a limiting boss is provided on the side of the load-bearing saddle, a plurality of longitudinal adjustment gaskets are sleeved 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 gasket and a pressure ring with a T-shaped cross section.

[0013] The bottom surface of the upper clamping plate is provided with a first protruding circular ring, 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, the top of the pre-compression spring is sleeved outside the first protruding circular ring and contacts the bottom surface of the upper clamping plate;

[0014] The top surface of the lower clamp plate is provided with a second protruding ring, and the bottom surface of the lower clamp plate and the position corresponding to the pre-tightening screw are provided with a protruding pin, and the pin is provided with a penetrating socket, and the socket is coaxially arranged with the threaded hole. The buffer rubber gasket ring is sleeved on the outside of the second protruding ring and contacts with the top surface of the lower clamp plate, the pressure ring is sleeved on the outside of the second protruding ring and contacts with the top of the buffer rubber gasket ring, and the bottom of the pre-compression spring is sleeved on the outside of the second protruding ring and contacts with the top surface of the pressure ring.

[0015] A method for adjusting the air gap of the linear motor air gap protection device of the above-mentioned air-track integrated motion vehicle includes adjusting the air gap during initial assembly, and the process is as follows:

[0016] Detecting the actual air gap between the linear motor mover and the linear motor stator through a gap detection sensor;

[0017] If the actual air gap exceeds the set air gap range, the pre-tightening bolt is screwed through the frame into the compression spring device to highly compress the compression spring device;

[0018] Screw the adjustment rod into the adjustment threaded tube of the positioning wheel guide frame seat on the motor bracket, lift up the positioning wheel pair, and add or remove several height adjustment gaskets in the second limiting circular groove of the positioning wheel guide frame seat;

[0019] Unscrew the adjusting rod, the positioning wheel pair falls back into the positioning wheel guide frame seat, unscrew the pre-tightening bolt, release the height compression of the compression spring device, and complete the air gap adjustment.

[0020] Furthermore, it also includes the air gap adjustment after the positioning wheel is worn or turned, and the process is:

[0021] The actual air gap between the linear motor mover and the linear motor stator is detected by the gap detection sensor.

[0022] If the actual air gap exceeds the set air gap range, screw the adjustment rod into the adjustment threaded tube of the positioning wheel guide frame seat on the motor bracket, lift up the positioning wheel pair, and add or remove several height adjustment shims in the second limit circular groove of the positioning wheel guide frame seat;

[0023] Screw out the adjustment rod, and the positioning wheel pair falls back into the positioning wheel guide frame seat to complete a single air gap adjustment;

[0024] Repeat the above steps until the actual air gap is within the set air gap range.

[0025] The beneficial effects of the present invention are:

[0026] The present invention utilizes the relative position relationship of the motor bracket, pre-compression spring device and positioning wheel pair of the linear motor on the bogie, and cooperates with the frame, auxiliary adjustment structure and detection device to realize convenient control, detection and adjustment of the air gap between the mover and stator of the linear motor. The detection and adjustment operation is simple, basically no other mechanism is added, and the hoisting of the bogie is not affected. When the bogie is installed in the box-type track beam, it is also easy to remove the fixing parts and restore the floating state of the linear motor.

[0027] The specially designed structure of the present invention can effectively ensure that a stable air gap is maintained between the mover and the stator of the linear motor. When the air gap changes, a simple device can be used to achieve convenient adjustment.

[0028] The present invention can be applied in initial assembly, detection, and later adjustment. The device will not affect the assembly structure of the bogie. When the entire bogie is fully assembled, initial adjustment can be performed. During the operation of the bogie, the linear motor gap monitoring sensor detects the air gap between the linear motor mover and the stator in real time, and the feedback data of the linear motor gap monitoring sensor is used to determine whether the air gap is too large or too small. When the steel wheel of the positioning wheelset is worn after a long period of movement (or after the wheelset is repaired), the air gap between the linear motor mover and the stator will be too small and continue to occur, and the air gap control adjustment can be performed in time.

[0029] The adjustment method of the present invention is simple and can be realized only by means of a specially made adjustment rod. The operation is also convenient and does not require disassembly of any parts of the bogie. Since the space inside the box-type track beam is small and the operating space is limited, after compression in this method, only a bolt wrench is needed to release the depressed state, which is very suitable for operation in narrow spaces.

[0030] The linear motor mover and motor bracket of the present invention adopt a floating type in the vertical direction. Through the positioning wheel set and the steel rail on the top surface, combined with the reverse force of four groups of pre-compression spring devices, the positioning wheel set is always pressed against the steel rail. The longitudinal pull rod connects the frame and the motor bracket, so that the motor bracket and the linear motor coil are always directly above the frame, and are approximately in a floating state above the frame. Through the joint action of the positioning wheel set, the steel rail, and the compression spring device, the displacement of the linear motor mover in the vertical direction is also very small when it is in motion. The compression spring device is then used for buffering and self-adjustment. The action gap between the linear motor mover and the stator can always be maintained in a suitable range, thereby ensuring the driving force and braking force of the linear motor. At the same time, the floating state can also effectively avoid the influence of vibration and impact on the linear motor, and improve the stability and seismic performance of the driving force.

[0031] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 The figure is a schematic diagram of the three-dimensional structure of the present invention applied to a bogie.

[0033] Figure 2 It is a schematic diagram of the planar structure of the present invention applied to a bogie.

[0034] Figure 3 It is a schematic diagram of the present invention installed on a box beam.

[0035] Figure 4 It is a top view of the motor bracket of the present invention.

[0036] Figure 5 It is a bottom view of the motor bracket of the present invention.

[0037] Figure 6 It is a front view of the motor bracket of the present invention.

[0038] Figure 7 It is a three-dimensional diagram of the motor bracket of the present invention.

[0039] Figure 8 It is a top view of the framework of the present invention.

[0040] Fig. 9 It is a front view of the framework of the present invention.

[0041] Fig.10 It is a front perspective view of the framework of the present invention.

[0042] Fig.11 It is a reverse stereogram of the framework of the present invention.

[0043] Fig.12 It is a partial stereogram of the framework of the present invention.

[0044] Fig.13 It is a schematic diagram of the positioning wheel set of the present invention.

[0045] Fig.14 It is a cross-sectional view of the compression spring device of the present invention.

[0046] Fig.15 It is a schematic diagram of the cooperation between the compression spring device and the pre-tightening bolt of the present invention.

[0047] Fig.16 This is a partial schematic diagram of the present invention when adjusting the air gap of the linear motor.

[0048] In the figure, 1- linear motor mover; 2- linear motor stator; 3- gap detection sensor;

[0049] 4-motor bracket; 4.1-side beam; 4.1.1-first lifting lug; 4.2-bearing crossbeam; 4.3-end crossbeam; 4.4-large 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 portion; 4.8-positioning wheel guide frame seat; 4.8.1-first contact portion; 4.8.2-second contact portion; 4.8.3-first limiting vertical groove; 4.8.4-second limiting circular groove; 4.8.5-sunken groove; 4.8.6-adjusting threaded tube; 4.9-moving element fixing seat; 4.9.1-second fixing plate; 4.9.2-second fixing hole;

[0050] 5-frame; 5.1-double web longitudinal beam; 5.1.1-second lifting lug; 5.2-carrying platform; 5.3-reinforced crossbeam; 5.3.1-plug-in 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 collector mounting seat; 5.6.1-second mounting plate; 5.6.2-fifth support plate; 5.6.3-second mounting hole Mounting hole; 5.7-center pin barrel; 5.7.1-upper end; 5.7.2-lower end; 5.7.3-guide groove; 5.8-bolster spring limit seat; 5.8.1-spring retaining ring; 5.8.2-first spring pad; 5.9 bolster 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 pull 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.

[0051] 6- positioning wheel set; 6.1- positioning wheel; 6.2- wheel axle; 6.3- fixing part; 6.4- bearing; 6.5- load saddle; 6.6- front gear; 6.7- rear gear; 6.8- damping spring; 6.9- limit rod; 6.10- height adjustment gasket; 6.11- limit boss; 6.12 longitudinal adjustment gasket; 7- running wheel set; 7.1- primary suspension spring; 7.2- running wheel;

[0052] 8-compression spring device; 8.1-pre-compression spring; 8.2-upper clamp; 8.3-lower clamp; 8.4-buffer rubber gasket; 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-socket;

[0053] 9-longitudinal tie rod; 10-tread brake; 11-top rail brake; 12-current collector; 13-center suspension device; 14-rocker; 15-box beam; 15.1-top wall; 15.2-positioning rail; 15.3-travel rail; 15.4-power supply rail; 16-pre-tightening bolt; 17-adjusting rod. DETAILED DESCRIPTION

[0054] 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.

[0055] It should be understood that the term “and / or” used in the specification and appended claims of this application refers to any and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0056] 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.

[0057] References to "one embodiment" or "some embodiments" etc. described in the specification of this application mean that one or more embodiments of the present application include specific features, structures or characteristics described in conjunction with the embodiment. Therefore, the phrases "in one embodiment", "in some embodiments", "in some other embodiments", "in some other embodiments", etc. appearing in different places in this specification do not necessarily refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways.

[0058] 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.

[0059] When describing a positional relationship, for example, when the positional sequence is described as "on," "above," "below," and "next," unless words or terms such as "just" or "directly" are used, situations where they are not in contact or in contact may also be included. If a first element is mentioned to be "on" a second element, it does not mean that the first element must be above the second element in the figure. The upper and lower parts of the component will change depending on the change in the angle of observation and orientation. Therefore, in the drawings or in the actual construction, if it is mentioned that the first element is "on" the second element, it may include a situation where the first element is "below" the second element and a situation where the first element is "above" the second element.

[0060] like Figure 1-3As shown, it is a structural schematic diagram of the present invention applied to a linear motor driven bogie. The linear motor driven bogie is a supporting design for a magnetic drive standard sky rail integrated motion vehicle (sky rail container transport vehicle). The present invention provides a linear motor air gap guarantee device for a sky rail integrated motion vehicle, including 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 pull rod 9, wherein the linear motor stator 2 is used to be installed on the bottom of the top wall 15.1 of a box beam 15 (box-type track beam), and 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 power is turned on, the current generated in the coil of the linear motor stator 2 will generate a magnetic field, which interacts with the permanent magnet on the linear motor mover 1, thereby generating electromagnetic force, driving the linear motor mover 1 to move in a straight line direction. The linear motor is used for driving, and stable power can be provided in the driving. The linear motor mover 1 is provided with a gap detection sensor 3 at both ends, and the gap detection sensor 3 can detect the air gap between the linear motor mover 1 and the linear motor stator 2 in real time, and can make timely adjustments when the air gap is not within the set range. The motor bracket 4 is suspended and connected above the frame 5 through the compression spring device 8 and the longitudinal pull rod 9, and the linear motor mover 1 and the positioning wheel pair 6 are installed on the motor bracket 4.

[0061] The motor bracket and the frame of the present invention are supported by four groups of compression spring devices and are hinged by two longitudinal pull rods. The entire motor bracket and the linear motor mover rely on the rebound force of the compression spring device, the longitudinal tension of the longitudinal pull rod, and the lateral force of the wheel flange and rail between the upper steel wheel and rail, so that the motor bracket and the linear motor mover are in a state of being suspended directly above the frame. 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 rail are worn, 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.

[0062] At the same time, the motor bracket and the linear motor mover rely on the rebound force after pre-compression of the compression spring device, the longitudinal tension of the longitudinal pull rod, and the lateral force of the wheel flange and rail between the upper steel wheel and rail, so that the motor bracket and the linear motor mover are in a stable state with six degrees of freedom constrained and are always suspended directly above the frame. At the same time, 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 extremely small air gap change caused will not affect the driving force or electric braking force of the linear motor.

[0063] The main structure of the bogie of the present invention includes two parts: a motor bracket 4 and a frame 5. Various devices are installed on the motor bracket 4 and the frame 5 respectively. Four compression spring devices 8 are used for balanced support in the vertical direction between the motor bracket 4 and the frame 5, so that the motor bracket forms a floating state, ensuring that the linear motor mover and the stator are maintained in a fixed induction gap range; longitudinal pull rods 9 are used to hinge the frame 5 and the motor bracket 4 in the front and rear longitudinal directions to transmit driving force or electric braking force; in the lateral direction, the lateral displacement is limited by the wheel flange and the rail structure of the upper steel wheel and rail combination, which not only meets the small lateral displacement difference between the frame and the linear motor support frame when turning, but also meets the synchronization of the lateral displacement of the linear motor support frame and the frame during movement.

[0064] In some embodiments, 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, the ends of the two side beams 4.1 are connected by an end crossbeam 4.3, a large crossbeam 4.4 is arranged between the load-bearing crossbeam 4.2 and the end crossbeam 4.3, a first tie rod seat 4.5 is arranged at the bottom of the end crossbeam 4.3, one end of the longitudinal tie rod 9 is hingedly connected to the first tie rod seat 4.5, and a spring top plate is arranged at the bottom of the large crossbeam 4.4 The top of the compression spring device 8 is connected to the spring top plate seat 4.6, the side beam 4.1 is located between the large cross beam 4.4 and the end cross beam 4.3 and is partially concave to form a recessed portion 4.7, and the recessed portion 4.7 is provided with a positioning wheel guide frame seat 4.8, and the positioning wheel pair 6 is installed in the positioning wheel guide frame seat 4.8, and the top of the load-bearing cross beam 4.2 and the top of the end cross beam 4.3 are provided with a mover fixing seat 4.9, and the linear motor mover 1 is installed on the mover fixing seat 4.9.

[0065] It is understandable that the motor bracket 4 is used to carry the linear motor mover 1 and the positioning wheel set 6, and the side beams 4.1 and multiple cross beams provided therein can ensure good bearing capacity. The recessed portions 4.7 at both ends of the side beam 4.1 and the positioning wheel set guide frame seat 4.8 provided in the recessed portions facilitate the installation of the positioning wheel set.

[0066] It should be noted that the above-mentioned side beam 4.1 is a tubular structure composed of structural plates connected by welding or other means, and the transverse plate of the tubular structure has a protruding portion at the edge connected to the vertical plate to enhance the structural strength. Multiple crossbeams are also similar structures. For example, the load-bearing crossbeam 4.2 includes multiple single beams arranged at intervals. The single beam is composed of a transverse plate and a vertical plate to form an I-shaped structure, and the two ends are fixedly connected to the inner side of the longitudinal beam. That is, whether it is a longitudinal beam or a cross beam, the structure is a non-uniform structure, and the edges of the structure have protruding parts or concave parts to achieve a function similar to a reinforcing rib plate. The first lifting lug 4.1.1 is provided on the outer side of the front and rear ends of the side beam 4.1. The first lifting lug 4.1.1 is convenient for moving and lifting the motor bracket, and can also perform secondary fixation on the bogie when the bogie is installed in the box beam.

[0067] It can be understood that the 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, and the longitudinal tie rod 9 is connected with 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 cross beam 4.4, or by a depression on the surface of the large cross beam 4.4. Two mover fixing seats 4.9 are arranged on each end cross beam 4.3, and two mover fixing seats 4.9 are arranged on the bearing cross beam. To ensure the structural strength, the two mover fixing seats 4.9 on the bearing cross beam are installed on the same base plate seat. The mover fixing seat 4.9 comprises a second fixing plate 4.9.1, and two second fixing holes 4.9.2 are arranged on the second fixing plate 4.9.1, which is fixedly connected to the linear motor mover 1 through the second fixing holes 4.9.2 and bolts.

[0068] It can be understood that there are four positioning wheel guide frame seats 4.8, which are respectively installed with four positioning wheels (two positioning wheel pairs). Its structural design facilitates the installation of the positioning wheel pair 6 and can also adjust the air gap of the linear motor, including a first contact portion 4.8.1 and a second contact portion 4.8.2 arranged relatively, the first contact portion 4.8.1 and the second contact portion 4.8.2 are respectively attached to the side of the recessed portion 4.7, and the middle parts of 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, the first limiting vertical groove 4.8.3 separates the corresponding contact portion into two wedge-shaped structures, a second limiting circular groove 4.8.4 is arranged between the first contact portion 4.8.1 and the second contact portion 4.8.2, and a through recessed groove 4.8.5 is opened in the center of the second limiting circular groove 4.8.4, and an adjusting threaded tube 4.8.6 that penetrates the recessed portion 4.7 is connected to the bottom of the recessed groove 4.8.5.

[0069] When installing the positioning wheel set 6, the bearing saddle 6.5 on the positioning wheel set 6 is clamped between the first contact portion 4.8.1 and the second contact portion 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 wheel set; 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 sink 4.8.5. In order to ensure the installation accuracy, a number of longitudinal adjustment gaskets 6.12 can be arranged between the limiting boss 6.11 and the corresponding contact portion, and a number of height adjustment gaskets 6.10 can be arranged 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 sink 4.8.5 is convenient for inserting the adjusting rod 17 when adjusting the air gap, and the top of the adjusting rod 17 is against the bottom of the limiting rod 6.9.

[0070] In some embodiments, 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 concave bearing platform 5.2 is arranged between the middle parts of the two double-web longitudinal beams 5.1, and the bearing platform 5.2 divides each double-web longitudinal beam 5.1 into two sections, a reinforcing cross beam 5.3 is arranged between the ends of the two double-web longitudinal beams 5.1, and tread brake mounting seats 5.10 for mounting tread brakes 10 are respectively arranged on both sides of the bottom of the reinforcing cross beam 5.3, a second pull rod seat 5.11 is arranged at the inner end of the top of the reinforcing cross beam 5.3, and a spring fixing seat 5.12 is arranged at the top of the reinforcing cross beam 5.3.

[0071] It can be understood that the double-web longitudinal beam 5.1 is a double longitudinal plate cavity beam formed by connecting a plate-like structure, and various specifications of ribs are arranged inside. The position 5.1.2 where the double-web longitudinal beam 5.1 connects with the load-bearing platform 5.2 is a downward curved arc structure with a smooth transition to enhance the bearing capacity of the frame. The double-web longitudinal beam is a non-uniform structure in structure, and the edges of the structure are all protruding parts or concave parts to achieve a function similar to a reinforcing rib plate. The reinforcing crossbeam is a tubular structure with a hollow interior. 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 is convenient for moving the lifting frame and can also perform secondary fixation on the bogie when the bogie is loaded into the box beam.

[0072] It can be understood that the bearing platform 5.2 is an internally hollow frame structure formed by connecting plate-like structures, the current collector mounting seat 5.6 is arranged on both sides of the top of the bearing platform, the center pin tube 5.7 passes through the bearing platform, the rocker spring limit seat 5.8 is arranged on the top of the bearing platform, and the rocker swing limit seat 5.9 is arranged at the position where the top of the bearing platform is connected to the double web longitudinal beam.

[0073] It can be understood that the second tie rod seat 5.11 is used to be hingedly connected to the other end of the longitudinal tie rod 9, and 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, and 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, and the seventh support plate 5.11.2 is vertically fixed to the third fixing plate 5.11.1.

[0074] It can be understood that the spring fixing seat 5.12 includes a second spring washer 5.12.1 fixed to the top of the reinforcing cross beam 5.3, a through hole 5.12.2 is opened in the center of the second spring washer 5.12.1, and a through plug hole 5.3.1 is provided on the reinforcing cross beam 5.3 at a position corresponding to the through hole. The spring fixing seat 5.12 is used to connect with 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 washer 5.12.1, and the latch 8.10 passes through the through hole 5.12.2 and is inserted into the plug hole 5.3.1 on the reinforcing cross 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.

[0075] When the present invention is applied to a bogie, a running wheel set 7, a tread brake 10, a top rail brake 11, a current collector 12 and a central suspension device 13 are also installed on the frame. After the bogie is installed in the box beam, the positioning wheel 6.1 of the positioning wheel set 6 cooperates with the positioning guide rail 15.2, and the running wheel 7.2 of the running wheel set 7 cooperates with the running guide rail 15.3. The frame is provided with corresponding fixing seats for the walking wheel set 7, the tread brake 10, the top rail brake 11, the current collector 12 and the center suspension device 13. Specifically, top rail brake mounting seats (5.4) for mounting the top rail brake are respectively arranged on the outer sides of the top two ends of the double-web longitudinal beam (5.1), and walking wheel guide frame seats (5.5) for mounting the walking wheel set are respectively arranged at the bottom two ends of the double-web longitudinal beam (5.1); current collector mounting seats (5.6) for mounting the current collector are respectively arranged on both sides of the bearing platform (5.2), a center pin barrel (5.7) for mounting the center suspension device is arranged in the middle of the bearing platform (5.2), and a plurality of bolster spring limit seats (5.8) and a plurality of bolster swing limit seats (5.9) are arranged around the center pin barrel (5.7); and tread brake mounting seats (5.10) for mounting the tread brake are respectively arranged on both sides of the bottom of the reinforcing crossbeam (5.3).

[0076] 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 end strengthening cross beams. The middle part of the entire frame is concave, serving as a load-bearing platform for the center suspension of the bolster. There is a tread brake mounting arm at each of the four end corners, and there is a mounting bracket for the top rail brake on the side of the middle part from the center of the longitudinal beam to the end. The entire frame looks like an "M" shape when viewed frontally and an "8" shape when viewed from above. The overall structure has good stability and strong load-bearing capacity. Two types of braking units are arranged on the frame, and there are 8 installation positions for braking units on the frame, including 4 installation positions for the tread brake of the steel wheel and 4 installation positions for the top rail brake of the parking brake, which has obvious advantages in braking performance compared with traditional trains during transportation on large slopes.

[0077] The compression spring device 8 is in contact with the component 5. However, in order to keep the spring stable and immobile, a plug hole 5.3.1 is provided on the strengthening cross beam 5.3 of the frame to prevent the horizontal movement of the spring. At the same time, through the through plug hole 5.3.1, during initial installation, the pre-compressed spring device can be compressed to a certain height by using a long pre-tightening bolt, which is convenient for the entire bogie to be installed into the box-shaped track beam.

[0078] 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 plate 5.4.3 is fixed to the inner side of the first mounting plate 5.4.1 and is 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 plate 5.4.3, the stability of the top rail brake installation can be ensured.

[0079] It is understandable that, in order to facilitate the regular disassembly and maintenance of the wheelset and the rapid assembly, a running wheel guide frame seat 5.5 consisting of two special-shaped fixed blocks is adopted, with a total of four in two groups. The primary suspension spring 7.1 of the wheelset and the wheelset can be quickly installed in the guide frame seat. Compared with the traditional bogie, it is extremely convenient to disassemble and replace the wheelset and the primary spring device. Specifically, the running wheel guide frame seat 5.5 includes a relatively arranged special-shaped first contact plate 5.5.1 and a second contact plate 5.5.2, a third limiting circular groove 5.5.5 is set 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, and the first contact plate 5.5.2 and the second contact plate are both provided with a second limiting vertical groove 5.5.6 with a top opening. When installing the traveling wheelset, a series of spring devices of the traveling wheelset (i.e., the load-bearing saddle, the damping spring, etc.) are clamped between the first contact plate 5.5.1 and the second contact plate 5.5.2, and the limiting boss cooperates with the second limiting vertical groove 5.5.6 to limit the lateral displacement of the traveling wheelset; the bottom end of the damping spring at the bottom of the load-bearing saddle cooperates with the third limiting circular groove 5.5.5. To ensure the installation accuracy, a number of longitudinal adjustment gaskets may be arranged between the limiting boss and the corresponding contact portion, and a number of height adjustment gaskets may be arranged between the limiting rod and the third limiting circular groove.

[0080] It is understandable that the current collector mounting seat 5.6 can fix and adjust the position of the current collector 12 so that the current collector 12 is in constant contact with the third rail (power rail 15.4) on the track beam to supply power to the linear motor. Specifically, the current collector mounting seat 5.6 includes a second mounting plate 5.6.1 and a plurality of fifth support plates 5.6.2, the second mounting plate 5.6.1 is provided with a plurality of second mounting holes 5.6.3, the second mounting plate 5.6.1 is vertically fixed to the top side edge of the bearing platform 5.2, and the fifth support plates 5.6.2 are vertically fixed to the two sides and the bottom of the second mounting plate 5.6.1.

[0081] It should be noted that in order to realize the assembly connection between the frame 5 and the center suspension device 13, as well as buffering and 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 in the spring retaining ring. The upper end of the rubber spring supports the upper end of the bolster and the center pin, and there are also spring pads and retaining rings to limit horizontal displacement. The center pin vertically passes through the center of the frame, and a center pin cylinder is set at the center of the frame. There is an annular ball joint rubber sleeve for shock absorption and limiting between the center pin cylinder and the center pin. A rubber spring is passed between the bolster and the center pin and the frame, and a ball joint rubber sleeve is passed between the center pin and the center sleeve of the center pin cylinder of the frame to avoid direct contact between steel and steel, and at the same time ensure that the center suspension device can have a small displacement in each degree of freedom.

[0082] It can be understood that the center pin barrel 5.7 is a stepped hole with a large diameter at the lower end 5.7.2 and a small diameter at the upper end 5.7.1, and a plurality of axially arranged guide grooves 5.7.3 are provided on the hole wall at the upper end along the circumference. When installing the center suspension device 13, the center pin shaft passes through the center pin barrel, and there is an annular ball joint rubber sleeve sleeved on the center pin shaft between the two. The ball joint rubber sleeve is interference fit with the center pin barrel, and the diameter of the lower half of the center pin barrel in contact with the ball joint rubber sleeve is larger than the diameter of the upper half, forming a step, which abuts against the upper end surface of the ball joint rubber sleeve to prevent the center suspension device from moving upward when the vehicle brakes suddenly. Rectangular grooves are provided on the four directions of the upper half of the center pin barrel, which is convenient for pushing the ball joint rubber sleeve that is interference fit with the center pin barrel out of the lower half of the center pin barrel by external force, and replacing the new ball joint rubber sleeve.

[0083] It can be understood that the rocker spring limit seat 5.8 set on the bearing platform 5.2 is used to limit the horizontal displacement of the cylindrical rubber spring. Specifically, the rocker spring limit seat 5.8 includes a spring retaining ring 5.8.1 and a first spring pad 5.8.2 protruding from the surface of the bearing platform. 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. The spring pad is a rubber pad, which plays a buffering role and also avoids contact with the steel structure. The bolster swing limit seat 5.9 arranged around the bearing platform 5.2, and the rubber stopper thereon are used for cushioning the swing of the bolster during movement to avoid direct collision with the frame steel structure. Specifically, the bolster swing limit seat 5.9 comprises a third mounting plate 5.9.1, a sixth support plate 5.9.2 and a rubber stopper (not shown in the figure). The third mounting plate 5.9.1 is vertically fixed to the top of the bearing platform, and the sixth support plate 5.9.2 is vertically fixed to the side of the third mounting plate 5.9.1 away from the center pin tube, and is connected to the top surface of the longitudinal beam and the first support plate at the same time to enhance the structural stability. The rubber stopper is fixed to the third mounting plate.

[0084] It can be understood that the tread brake mounting seat 5.10 is used to install the tread brake 10, which includes a downwardly inclined 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 beam 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, and the fourth mounting plate 5.10.2 is provided with a plurality of third mounting holes.

[0085] In some embodiments, Fig.13As shown, the positioning wheel pair 6 includes an axle 6.2 and positioning wheels 6.1 respectively fixed to the two ends of the axle, and the two ends of the axle 6.2 are respectively provided with fixing parts 6.3 on the inner side of the positioning wheels, and the fixing parts 6.3 include a bearing 6.4, a load-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 on the axle 6.2, and the load-bearing saddle 6.5 is in contact connection or interference fit 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 arranged on both sides of the bearing 6.4, and are limited by the inner limiting step of the axle and the inner side surface of the positioning wheel. The bottom and side of the load-bearing saddle 6.5 are connected to the positioning wheel guide frame seat 4.8 of the motor bracket 4. A downwardly protruding limit rod 6.9 is provided at the bottom of the shock absorbing spring 6.8 at the bottom of the bearing saddle 6.5, and a plurality of height adjustment gaskets 6.10 are sleeved on the limit rod 6.9. A limit boss 6.11 is provided on the side of the bearing saddle 6.8, and a plurality of longitudinal adjustment gaskets 6.12 are sleeved on the limit boss 6.11.

[0086] It should be noted that the structure of the traveling wheelset 7 is basically the same as that of the positioning wheelset 6. The difference is that when the air gap of the linear motor is adjusted, it is necessary to adjust it through the positioning wheelset 6, and the traveling wheelset does not have this function. Therefore, a limit rod 6.9 is provided at the bottom of the bearing saddle of the positioning wheelset 6, while no limit rod is provided at the bottom of the traveling wheelset 7.

[0087] In some embodiments, Fig.14 As shown, the compression spring device 8 comprises a pre-compression spring 8.1, an upper clamping plate 8.2, a lower clamping plate 8.3, a buffer rubber pad 8.4 and a pressure ring 8.5 with a T-shaped cross section. The bottom surface of the upper clamping plate 8.2 is provided with a first protruding circular ring 8.6, and the middle part of the bottom surface of the upper clamping plate 8.2 is provided with a downward pre-tightening screw 8.7, and the bottom of the pre-tightening screw 8.7 is provided with a longer threaded hole 8.8. The top of the pre-compression spring 8.1 is sleeved on the outside of the first protruding circular 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 circular ring 8. 9. A protruding pin 8.10 is provided at a position corresponding to the bottom surface of the lower clamping plate 8.3 and the pre-tightening screw 8.7. A penetrating socket 8.11 is provided on the pin 8.10. The socket 8.11 is coaxially arranged with the threaded hole 8.8. The buffer rubber gasket 8.4 is sleeved on the outside of the second protruding circular ring 8.9 and contacts the top surface of the lower clamping plate 8.3. The pressure ring 8.5 is sleeved on the outside of the second protruding circular ring 8.9 and contacts the top of the buffer rubber gasket 8.4. The bottom of the pre-compression spring 8.1 is sleeved on the outside of the second protruding circular ring 8.9 and contacts the top surface of the pressure ring 8.5.

[0088] When the compression spring device 8 is in a normal state on the bogie, the bottom end of the pre-tightening screw 8.7 is located in 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 the compression spring device 8 needs to be compressed, a long pre-tightening bolt 16 is passed through the insertion hole 8.11, and the top of the pre-tightening bolt 16 is matched with the threaded hole 8.8. The deeper the pre-tightening bolt 16 is screwed in, the greater the height of the compression spring device 8 is compressed. Fig.15 FIG. 1 is a schematic diagram of the pre-tightening bolt 16 being screwed into the compression spring device 8 . The length of the threaded hole in the figure is only for illustration and is actually determined according to the possible compression height of the compression spring device.

[0089] After the linear motor air gap guarantee device of the above-mentioned air rail integrated motion vehicle is installed on the box beam, 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 the initial assembly and subsequent adjustments. During the 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 the subsequent adjustments, due to the wear or turning of the positioning wheel, the height of the motor bracket will 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.

[0090] In view of the above-mentioned linear motor air gap protection device, the present invention also provides an air gap adjustment method, including air gap adjustment during initial assembly. During initial assembly, the air gap deviation may be large, so it is necessary to combine the pre-tightening bolt 16 to highly compress the compression spring device 8, and the process is as follows:

[0091] The actual air gap between the linear motor mover 1 and the linear motor stator 2 (including the linear motor stator and both ends of the mover) is detected by the gap detection sensor 3, and the actual air gap is compared with the set air gap range.

[0092] If the actual air gap at the corresponding end exceeds the set air gap range, the difference is recorded, and the pre-stressing bolt 16 is passed through the plug hole 5.3.1 of the reinforcing cross beam 5.3 of the frame 5 and screwed into the compression spring device 8 to highly compress the compression spring device. The screwing state of the pre-stressing bolt 16 is shown in FIG. Fig.15 The compression of the compression spring device is a rough adjustment of the height of the motor bracket, and the motor bracket is finely adjusted after the height is lowered. The exceeding of 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.

[0093] The specially made adjusting rod 17 which can cooperate with the adjusting threaded tube 4.8.6 is screwed into the adjusting threaded tube 4.8.6 of the positioning wheel guide frame seat 4.8 on the motor bracket 4. The screwed-in state is shown in 16, and the positioning wheel pair 6 is lifted up. According to the excess error of the air gap in the initial state, a number of height adjustment gaskets 6.10 are added or removed from the second limiting circular groove 4.8.4 of the positioning wheel guide frame seat 4.8. The purpose of adjusting the air gap between the mover and the stator of the linear motor can be achieved by adjusting the height of the positioning wheel pair relative to the motor bracket. Raising the positioning wheel pair 6 here does not mean raising the height of the positioning wheel pair, but is relative to the motor bracket, because the top of the positioning wheel is in contact with the positioning guide rail of the box beam, and its height will not change. Therefore, when the adjusting rod 17 is adjusted, the height of the motor bracket 4 is lowered, and the height of the positioning wheel pair 6 is raised relative to the motor bracket. At this time, since the adjusting rod 17 is 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 circular groove 4.8.4 of the positioning wheel guide frame seat, a suitable number of height adjustment gaskets 6.10 can be added or removed. The number of height adjustment gaskets added or removed is determined according to the difference between the actual air gap initially detected and the set air gap range. If the actual air gap is greater than the upper limit value of the set air gap range, the difference is the difference between the actual air gap and the upper limit value of the set air gap range; if the actual air gap is less than the lower limit value of the set air gap range, the difference is the difference between the upper limit value of the set air gap range and the actual air gap.

[0094] After adding or removing the height adjustment gasket, the adjusting rod 17 is screwed out, and the positioning wheel pair 6 falls back into the positioning wheel guide frame seat 4.8, or the motor bracket height is increased, the positioning wheel guide frame seat rises and engages with the positioning wheel, and then the pre-tightening bolt is screwed out to release the height compression of the compression spring device to complete the air gap adjustment.

[0095] It is understandable that the above-mentioned air gap adjustment also includes the air gap adjustment after the positioning wheel is worn or turned. After the positioning wheel is worn or turned, the air gap between the linear motor mover and the stator must be smaller than the normal air gap distance. Its adjustment is simpler than the initial adjustment, and there is no need to highly compress the compression spring device. It can be achieved directly with a special adjustment rod. The process is:

[0096] 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.

[0097] If the actual air gap exceeds the set air gap range, screw the adjustment rod 17 into the adjustment threaded tube 4.8.6 of the positioning wheel guide frame seat 4.8 on the motor bracket 4, and lift up the positioning wheel set 6. Since the air gap is generally small after the positioning wheel is worn or turned, add a number of height adjustment shims in the second limiting circular groove 4.8.4 of the positioning wheel guide frame seat; of course, there may be special circumstances that cause the air gap to be too large, in which case it is necessary to remove a number of adjustment shims. At the same time, due to the wear or turning of the positioning wheel, the distance between the side of the load-bearing saddle of the positioning wheel set and the first contact part and / or the second contact part may increase. At this time, it is necessary to add a suitable number of longitudinal adjustment shims 6.12 between the side of the load-bearing saddle and the first contact part and / or the second contact part. The reserved groove in the second limiting circular groove can ensure that the wheelset will not shift after the height adjustment shims are added.

[0098] After adding or removing the height adjustment shims and longitudinal adjustment shims, screw out the adjustment rod, and the positioning wheel pair falls back into the positioning wheel guide frame seat to complete a single air gap adjustment;

[0099] 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.

[0100] It should be noted that the above air gap adjustment method is simple and only requires the use of a specially made adjustment rod (such as Fig.16 The operation is also convenient, and no parts of the bogie need to be disassembled. Since the space inside the box-type track beam is small, the operating space is limited. After compression by this method, only a bolt wrench is needed to release the depressed state, which is very suitable for operation in narrow spaces.

[0101] 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. A linear motor air gap protection device for an empty rail integrated motion vehicle, characterized in that: The invention comprises 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 pull rod (9); the linear motor stator (2) is used to be installed at the bottom of the top wall of the box 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); a gap detection sensor (3) is provided at the end of the linear motor mover (1); the motor bracket (4) is suspended and connected above the frame (5) through the compression spring device (8) and the longitudinal pull 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 of the empty rail integrated motion vehicle according to claim 1 is characterized in that: The motor bracket (4) comprises 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), the ends of the two side beams (4.1) are connected by an end crossbeam (4.3), a large crossbeam (4.4) is arranged between the load-bearing crossbeam (4.2) and the end crossbeam (4.3), a first tie rod seat (4.5) is arranged at the bottom of the end crossbeam (4.3), one end of the longitudinal tie rod is hingedly connected to the first tie rod seat, and the bottom of the large crossbeam (4.4) is connected to the load-bearing crossbeam (4.2) and the end crossbeam (4.3). A spring top plate seat (4.6) is arranged at the top of the compression spring device, the top of the compression spring device is connected to the spring top plate seat, the side beam (4.1) is located between the large cross beam (4.4) and the end cross beam (4.3) and is partially concave to form a recessed portion (4.7), a positioning wheel guide frame seat (4.8) is arranged in the recessed portion, the positioning wheel pair is installed in the positioning wheel guide frame seat, a mover fixing seat (4.9) is arranged at the top of the load-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 of the empty rail integrated motion vehicle according to claim 2 is characterized in that: The positioning wheel guide frame seat (4.8) comprises a first contact portion (4.8.1) and a second contact portion (4.8.2) arranged relatively to each other, the first contact portion (4.8.1) and the second contact portion (4.8.2) respectively fit on the side surface of the recessed portion, the first contact portion (4.8.1) and the second contact portion (4.8.2) are both 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 recessed groove (4.8.5) is provided at the center of the second limiting circular groove (4.8.4), and an adjusting threaded tube (4.8.6) that penetrates the recessed portion is connected to the bottom of the recessed groove (4.8.5).

4. The linear motor air gap protection device of the empty rail integrated motion vehicle according to claim 1 is characterized in that: The frame (5) comprises two double-web longitudinal beams (5.1) arranged opposite to each other, a concave bearing platform (5.2) is arranged between the middle parts of the two double-web longitudinal beams (5.1), the bearing platform divides the double-web longitudinal beam into two sections, a reinforcing cross beam (5.3) is arranged 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 arranged on the top of the reinforcing cross beam (5.3), the other end of the longitudinal tie rod (9) is movably connected to the second tie rod seat (5.11), and 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 of the empty rail integrated motion vehicle according to claim 4 is characterized in that: The spring fixing seat (5.12) comprises a second spring pad (5.12.1) fixed to the top of the reinforcing crossbeam (5.3), a through hole (5.12.2) is provided at the center of the second spring pad (5.12.1), and a through plug hole (5.3.1) is provided on the reinforcing crossbeam (5.3) at a position corresponding to the through hole.

6. The linear motor air gap protection device of the empty rail integrated motion vehicle according to claim 1 is characterized in that: The positioning wheel pair (6) comprises a wheel axle (6.2) and positioning wheels (6.1) respectively fixed to two ends of the wheel axle (6.2); two ends of the wheel axle (6.2) are respectively provided with fixing parts (6.3) located inside the positioning wheels; the fixing parts (6.3) comprise a bearing (6.4), a load-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 wheel axle (6.2); the load-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 arranged on both sides of the bearing (6.4); the side of the load-bearing saddle (6.5) is connected to the positioning wheel guide frame seat of the motor bracket (4); and the damping spring (6.8) is arranged at the bottom of the load-bearing saddle.

7. The linear motor air gap protection device of the empty rail integrated motion vehicle according to claim 6 is characterized in that: A downwardly protruding limiting rod (6.9) is provided at the bottom of the damping spring (6.8), a plurality of height adjustment gaskets (6.10) are sleeved on the limiting rod (6.9), and a limiting boss (6.11) is provided on the side of the bearing saddle (6.5), and a plurality of longitudinal adjustment gaskets (6.12) are sleeved on the limiting boss (6.11).

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

9. A method for adjusting the air gap of the linear motor air gap protection device of the empty rail integrated motion vehicle as claimed in claim 1, characterized in that: Including the air gap adjustment during initial assembly, the process is: Detecting the actual air gap between the linear motor mover (1) and the linear motor stator (2) by means of a gap detection sensor (3); If the actual air gap exceeds the set air gap range, the pre-stressing bolt (16) is passed through the frame (5) and screwed into the compression spring device (8) to highly compress the compression spring device (8); 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), lift up the positioning wheel pair (6), and add or remove a number of height adjustment gaskets (6.10) in the second limiting circular groove (4.8.4) of the positioning wheel guide frame seat (4.8); The adjusting rod (17) is screwed out, the positioning wheel pair (6) falls back into the positioning wheel guide frame seat (4.8), the pre-compression bolt (16) is screwed out, the height compression of the compression spring device (8) is released, and the air gap adjustment is completed.

10. The air gap adjustment method according to claim 9, characterized in that: It also includes the air gap adjustment after the positioning wheel is worn or turned. The process is: The actual air gap between the linear motor mover (1) and the linear motor stator (2) is detected by a gap detection sensor (3). 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), lift up the positioning wheel pair (6), and add or remove a number of height adjustment shims (6.10) in the second limiting circular groove (4.8.4) of the positioning wheel guide frame seat (6); The adjusting rod (17) is screwed out, and the positioning wheel pair (6) falls back into the positioning wheel guide frame seat (4.8), completing a single air gap adjustment; Repeat the above steps until the actual air gap is within the set air gap range.

Images