A bogie for a straddle-type monorail engineering vehicle

Abstract

The present invention relates to the technical field of straddle-type monorail engineering vehicles, specifically disclosing a bogie for a straddle-type monorail engineering vehicle, comprising a frame, a traction device mounted on the frame, independent drive devices symmetrically arranged and mounted on the frame, and guide and stabilizing wheel sets mounted on the frame and symmetrically arranged along the travel direction. The present invention effectively reduces the overall weight and length of the engineering vehicle, and can accommodate confined installation spaces within the vehicle with its smaller dimensions.

Description

Technical Field

[0001] The present invention relates to the technical field of straddle-type monorail engineering vehicles, and more particularly to a bogie for a straddle-type monorail engineering vehicle. Background Art

[0002] During daily operations, straddle-type monorail passenger lines need to be powered off at night for inspection, patrol, and routine maintenance. In the event of a power outage on a straddle-type monorail line, a self-powered engineering vehicle is required to carry maintenance personnel and tools to the line for operations. Currently, most self-powered straddle-type monorail engineering vehicles are powered by internal combustion engines, and the urban areas where the monorail lines are located prohibit noise and exhaust gas pollution at night. In summary, there is an urgent need for a zero-emission and low-noise straddle-type monorail engineering vehicle to carry out patrol, inspection, and routine maintenance on straddle-type monorail lines in urban areas.

[0003] The length of straddle-type monorail lines used for temporary stops and emergency avoidance is limited, and the personnel and tools required for line inspection operations are far less than the rated load of passenger vehicles. Therefore, the length of engineering vehicles is required to be as short as possible and the weight as light as possible to increase the number of engineering vehicles that can stop on emergency avoidance or temporary stop lines.

[0004] While meeting the requirements of performance and safety, the weight and length of engineering vehicles using single-axle bogies are much smaller than those of multi-axle bogies (more than two axles). The multi-axle bogies in the existing technology cannot solve the running problems of engineering vehicles with small length, light weight, low noise and zero emissions; and cannot meet the use requirements of single-axle bogies. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a bogie for a straddle-type monorail engineering vehicle, which can effectively reduce the overall weight and length of the engineering vehicle and can meet the narrow installation space of the engineering vehicle with a smaller size.

[0006] The solution adopted by the present invention to solve the technical problem is:

[0007] A bogie for a straddle-type monorail engineering vehicle comprises a frame, a traction device mounted on the frame, an independent drive device symmetrically arranged and mounted on the frame, and a guide stabilizing wheel set mounted on the frame and symmetrically arranged along the running direction.

[0008] In some possible implementations,

[0009] The independent driving device includes an axle holding frame device installed on the frame and arranged along the traveling direction, a wheel located on one side of the axle holding frame device, and a driving mechanism located on the side of the axle holding frame device away from the wheel and passing through the axle holding frame device and connected to the wheel in a transmission manner.

[0010] In some possible implementations,

[0011] The shaft holding frame device includes an upper fork, a lower cover installed in conjunction with the upper fork and used to form a mounting cavity, and a double fork arm located at the bottom of the lower cover and hinged to the lower cover; the double fork arm is hinged to the frame on one side away from the lower cover.

[0012] In some possible implementations,

[0013] The upper fork includes a positioning seat 1 and force-bearing arms symmetrically installed on both sides of the positioning seat 1;

[0014] The lower cover includes a cover body connected to a bottom of the positioning seat and forming a mounting cavity;

[0015] The installation cavity includes a coupling accommodating cavity arranged on a side away from the wheel, and a bearing positioning groove communicated with the coupling accommodating cavity and coaxially arranged; the bearing positioning groove is arranged on a side close to the wheel.

[0016] In some possible implementations,

[0017] The driving mechanism includes a flange half-shaft with one end extending into the installation cavity and the other end being coaxially connected to the wheel, a driving bearing sleeved on the half-shaft of the flange half-shaft and located in the bearing positioning groove, and a driving device that is transmission-connected to the end of the flange half-shaft away from the wheel.

[0018] In some possible implementations,

[0019] The drive device includes a gearbox whose output shaft is coaxially connected to the end of the flange half shaft away from the wheel, a brake disc and a traction motor respectively connected to the gearbox;

[0020] The output shaft of the gearbox is connected to the flange half-shaft through a coupling, and the coupling is located in the coupling mounting cavity; the output shaft of the traction motor is arranged at an angle, and the distance from the end close to the gearbox to the top of the wheel is greater than the distance from the end away from the gearbox to the top of the wheel.

[0021] In some possible implementations,

[0022] The traction device includes a traction pin arranged in the Y-axis direction, a traction rod arranged along the running direction and cooperating with the traction pin to rotate around the Y-axis direction, and a frame mounting seat cooperating with the other end of the traction rod and rotating around the Z-axis direction.

[0023] In some possible implementations,

[0024] The traction pin includes a box body, a rib plate installed in the box body, and a pin body installed at the bottom of the box body and arranged along the Y-axis direction; the pin body is rotatably connected to the traction rod; the rib plates are in multiple groups and arranged along the Y-axis; and weight-reducing holes are provided on the rib plates.

[0025] In some possible implementations,

[0026] The frame comprises a U-shaped frame with an opening downward, an elastic suspension device installed on the U-shaped frame, and safety wheels respectively installed on one side of the U-shaped frame close to and away from the traction device.

[0027] In some possible implementations,

[0028] The guide and stabilizing wheel assembly includes a guide wheel and a stabilizing wheel that are arranged on the same side and installed on the inner side of the U-shaped frame; the guide wheel and the stabilizing wheel are elastically connected to the U-shaped frame respectively.

[0029] Compared with the prior art, the present invention has the following beneficial effects:

[0030] The present invention can effectively reduce the overall weight and length of the engineering vehicle; and can meet the narrow installation space of the engineering vehicle with a smaller size;

[0031] The present invention effectively enables the wheel to rotate only around its axial direction through the cooperation between the axle holding frame device and the driving device;

[0032] The present invention effectively limits the movement of the driving bearing in the axial and radial directions by providing the bearing positioning groove;

[0033] The present invention effectively increases the height between the tail of the traction motor and the track surface by arranging the output shaft of the traction motor at an angle relative to the horizontal plane, thereby reducing the size of the entire independent drive device and effectively realizing independent driving of the wheels.

[0034] The present invention can effectively realize the positioning of the wheels, ensuring that the wheels can move along the running direction without rolling over or rotating in other directions;

[0035] The present invention effectively limits the movement of the bearing in the radial and axial directions by providing a bearing mounting cavity and a bearing rib, thereby achieving positioning control of the wheel.

[0036] The present invention realizes rotation around the Y-axis and the Z-axis by respectively connecting the two ends of the traction rod to the traction pin and the frame mounting seat, thereby effectively meeting the requirements of the single-axle bogie being able to pass on the curved track and the single-axle bogie nodding.

[0037] The present invention can effectively alleviate the impact force between the vehicle body and the bogie, and reduce vibration and noise by providing the first and second rubber joints.

[0038] The present invention effectively reduces the weight of the box body by arranging ribs in the box body and arranging weight-reducing holes in the ribs. The rigidity of the box body is effectively ensured by the inclined arrangement of the ribs.

[0039] The present invention has a simple structure and strong practicality, can effectively reduce the length and weight of the engineering vehicle through the single-axle form, and can pass on a curved track. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0041] Figure 2 For the present invention Figure 1 Left view of;

[0042] Figure 3 For the present invention Figure 1 Front view of

[0043] Figure 4 It is a structural schematic diagram of the traction device in the present invention;

[0044] Figure 5 Schematic diagram of the internal structure of the traction pin in the present invention;

[0045] Figure 6 This is a schematic diagram of the connection between the traction pin and the traction rod in the present invention;

[0046] Figure 7 This is a schematic diagram of the connection between the traction rod and the frame mounting seat in the present invention;

[0047] Figure 8 Schematic diagram of the three-dimensional structure of the shaft holding frame device in the present invention;

[0048] Figure 9 A top view of the shaft holding frame device of the present invention;

[0049] Figure 10 It is a front view of the shaft holding frame device of the present invention;

[0050] Figure 11 for Figure 9 Schematic diagram of the cross-sectional structure at AA in the middle;

[0051] Figure 12 Schematic diagram of the three-dimensional structure of the independent driving device in the present invention;

[0052] Figure 13 It is a side structural diagram of the independent driving device in the present invention;

[0053] Figure 14 for Figure 13 Schematic diagram of the cross-sectional structure at the middle BB;

[0054] Figure 15 Schematic diagram of the structure of the flange half shaft in the present invention;

[0055] Among them: 1. Traction device; 11. Traction pin; 111. Box; 1111. Rib plate; 1112. Positioning cover; 112. Pin body; 113. Rubber joint 1; 12. Bushing; 13. Traction rod; 14. Stop cover; 15. Frame mounting seat; 151. Support frame plate; 152. Frame connecting pin; 153. Rubber joint 2; 2. Axle holding frame device; 21. Upper fork; 211. Positioning seat 1; 212. Force arm; 22. Lower cover; 221. Cover body; 23. Double fork arm; 231 , fork arm; 24, mounting cavity; 241, coupling accommodating cavity; 242, bearing positioning groove; 3, driving mechanism; 31, flange half shaft; 311, flange plate; 312, half shaft; 313, half shaft bearing seat; 32, driving bearing; 33, coupling; 34, gear box; 35, brake disc; 36, traction motor; 4, wheel; 5, frame; 51, U-shaped frame; 52, elastic suspension device; 53, safety wheel; 6, guide stabilizing wheel group; 61, guide wheel; 62 stabilizing wheel; 100, track. DETAILED DESCRIPTION

[0056] In this application, unless otherwise specified or limited, terms such as "mounted," "connected," "connect," and "fixed" should be interpreted broadly. For example, they can refer to fixed connections, removable connections, or integration; they can refer to direct connections or indirect connections through an intermediary; they can refer to internal communication between two components or interactions between two components. The terms "first," "second," and similar terms mentioned in this application do not denote any order, quantity, or importance; they are simply used to distinguish between different components. Similarly, terms such as "one" or "a" do not indicate a quantitative limitation; rather, they indicate the presence of at least one. In the implementation of this application, "and / or" describes an association relationship between associated objects, indicating that three possible relationships exist. For example, "A and / or B" can mean: A exists alone, A and B exist simultaneously, or B exists alone. In the description of the embodiments of this application, unless otherwise specified, "plurality" means two or more. For example, "plurality" refers to two or more positioning posts. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0057] The present invention is described in detail below.

[0058] like Figures 1-15 As shown:

[0059] A bogie for a straddle-type monorail engineering vehicle comprises a frame 5, a traction device 1 mounted on the frame 5, an independent drive device symmetrically arranged and mounted on the frame 5, and a guide stabilizing wheel set 6 mounted on the frame 5 and symmetrically arranged along the running direction.

[0060] like Figure 1 As shown, the running direction is the X-axis direction;

[0061] The frame 5 is used to install the independent drive device for bearing vertical force and transmitting driving force, the traction device 1, and the guide and stabilizing wheel group 6, and enables running movement on the rail surface. By setting up the independent drive device, it is ensured that the wheels 4 can be driven independently during running, and it is ensured that it can be installed in a smaller installation space, reducing the structural size and weight of the bogie, and thus making the mass and size of the entire engineering vehicle lighter and smaller than that of the multi-axle bogie; by setting up the guide and stabilizing wheel group 6, it can effectively ensure curve guidance and prevent rollover during running.

[0062] In some possible implementations, in order to effectively position the wheel 4 on the bogie, the wheel 4 can only rotate around its axis;

[0063] The independent driving device includes an axle holding frame device 2 installed on the frame 5 and arranged along the traveling direction, a wheel 4 located on one side of the axle holding frame device 2, and a driving mechanism 3 located on the side of the axle holding frame device 2 away from the wheel 4 and passing through the axle holding frame device 2 and connected to the wheel 4 in a transmission manner.

[0064] In some possible implementations, in order to effectively realize the installation of the driving mechanism 3, the upper fork 21 is made to bear the load;

[0065] like Figures 8-11 As shown, the shaft holding frame device 2 includes an upper fork 21, a lower cover 22 installed in conjunction with the upper fork 21 and used to form a mounting cavity 24, and a double fork arm 23 located at the bottom of the lower cover 22 and hinged to the lower cover 22; the double fork arm 23 is hinged to the frame 5 on the side away from the lower cover 22.

[0066] In some possible implementations, in order to effectively install the coupling 33 and the drive bearing 32,

[0067] like Figure 9 As shown, the upper fork 21 includes a positioning seat 211 and force-bearing arms 212 symmetrically installed on both sides of the positioning seat 211;

[0068] like Figure 1 As shown, the force-bearing arm 212 is set in the X-axis direction;

[0069] The lower cover 22 includes a cover body 221 connected to the bottom of the positioning seat 211 and forming a mounting cavity 24;

[0070] The double wishbone 23 is connected to the frame 5 and fixedly connected to the upper fork 21 and the top of the frame 5. The two cooperate to limit the lateral deviation and torsion of the independent drive device;

[0071] In order to effectively realize the installation of the coupling 33 and the driving bearing 32 in the driving mechanism 3, and effectively realize the movement restriction of the driving bearing 32 along its radial direction;

[0072] like Figure 10 、 11 As shown, the installation cavity 24 includes a coupling accommodating cavity 241 arranged on the side away from the wheel 4, and a bearing positioning groove 242 connected to the coupling accommodating cavity 241 and coaxially arranged; the bearing positioning groove 242 is arranged on the side close to the wheel 4.

[0073] The bearing positioning groove 242 is used to limit the movement of the driving bearing 32 along its axial and radial directions, and through cooperation with the axle holding frame device 2, the wheel 4 can only rotate around its axial direction.

[0074] The positioning seat 1 211 includes a seat body provided with a groove 1 on one side close to the cover body 221, and an upper half bearing seat connected to the seat body and provided with a bearing mounting half groove 1. The bearing mounting half groove 1 is connected to the groove 1 and has the same opening direction.

[0075] The cover body 221 includes a cover body provided with groove 2 and located at the bottom of the seat body, and a lower bearing seat provided on the same side as the upper bearing seat and connected to the cover body; the lower bearing seat is provided with a bearing mounting half groove 2 that cooperates with the bearing mounting half groove 1 to form a bearing positioning groove 242.

[0076] The first groove and the second groove cooperate with each other to form a coupling accommodating chamber 241, and an opening is provided on the side close to the gear box 34, through which the coupling 33 can be located in the coupling accommodating chamber 241;

[0077] The bearing mounting groove 1 and the bearing mounting half groove 2 cooperate with each other to form a bearing positioning groove 242. The bearing positioning groove 242 is connected to the coupling accommodating cavity 241. The half shaft 312 of the flange half shaft 31 will pass through the bearing positioning groove 242 and be located in the coupling accommodating cavity 241 and connected to its internal coupling 33.

[0078] In some possible implementations, in order to effectively limit the movement of the driving bearing 32 along its axial direction;

[0079] Bearing ribs are respectively provided on both sides of the bearing positioning groove 242 along its axis.

[0080] The bearing ribs include upper bearing ribs located on both sides of the upper bearing seat along the axial direction thereof, and lower bearing ribs of the driving bearing 32 located on both sides of the lower bearing seat and along the axial direction thereof.

[0081] The upper ribs of the driving bearing 32 on both sides and the lower ribs of the driving bearing 32 on both sides form two retaining rings. The driving bearing 32 is installed on the bearing seat formed by the upper bearing seat and the lower half bearing seat, and is located between the two retaining rings. The two retaining rings will limit the movement of the driving bearing 32 along its axial direction.

[0082] Preferably, a bearing outer retaining ring and a bearing inner retaining ring are also mounted on the half-shaft bearing seat 313, and the two retaining rings are located inside the two retaining rings, and the two retaining rings are located on both sides of the driving bearing 32; this further prevents the driving bearing 32 from moving along its axial direction; the bearing mounting half groove one and the bearing mounting half groove two cooperate with each other to form a bearing positioning groove 242, and the bearing will be installed in the bearing positioning groove 242 so that it cannot move along its radial direction; thereby effectively limiting the radial and axial movement of the bearing.

[0083] In some possible implementations,

[0084] The double fork arm 23 includes a hinge portion hinged to the bottom of the cover body, and a fork arm 231 connected to the hinge portion and forming an eight-shaped fork arm.

[0085] The fork arm 231 is used to connect to the frame, and the upper fork 21 is also connected to the frame, ensuring that the wheel 4 has only the freedom to rotate around its axis.

[0086] In some possible implementations,

[0087] A hinge seat hinged to the hinge portion is provided at the bottom of the cover body. The hinge seat includes two parallel supporting plates and a fastening pin provided along the length direction of the force-bearing arm 212 and rotatably connected to the hinge portion.

[0088] Preferably, the connection between the cover body and the force-bearing arm 212 is an arc transition, so that the upper fork 21 has an arc-shaped structure. When in use, the cover body will be partially located in the inner hole of the wheel 4, which effectively avoids mutual interference with the wheel 4.

[0089] In some possible implementations, in order to effectively achieve independent driving of the wheels 4;

[0090] like Figure 13 、 Figure 14 As shown, the driving mechanism 3 includes a flange half-shaft 31 with one end extending into the mounting cavity 24 and the other end being coaxially connected to the wheel 4, a driving bearing 32 mounted on the half-shaft 312 of the flange half-shaft 31 and located in the bearing positioning groove 242, and a driving device that is transmission-connected to the end of the flange half-shaft 31 away from the wheel 4.

[0091] like Figure 15As shown, the flange half-shaft 31 includes a flange plate 311 located in the inner hole of the wheel 4 and coaxially connected, a half-shaft 312 coaxially connected to the flange plate 311, and a half-shaft bearing seat 313 mounted on the half-shaft 312; the driving bearing 32 is mounted on the half-shaft bearing seat 313, and its inner ring is fixedly connected to the half-shaft bearing seat 313.

[0092] In some possible implementations, in order to effectively drive the flange half-shaft 31 , thereby driving the wheel 4 to rotate along the axial direction of the flange half-shaft 31 ;

[0093] like Figure 13 As shown, the drive device includes a gear box 34 that is coaxially connected to the output shaft and the end of the flange half shaft 31 away from the wheel 4, a brake disc 35 and a traction motor 36 that are respectively connected to the gear box 34;

[0094] Preferably, the gearbox 34 and the traction motor 36 are fixed on the bogie frame 5 and are only responsible for torque output without bearing any load other than their own weight; the brake disc 35 is used to perform braking control on the output shaft of the gearbox 34 .

[0095] The output shaft of the gearbox 34 is connected to the flange half shaft 31 through a coupling 33, and the coupling 33 is located in the coupling 33 installation cavity 24; the output shaft of the traction motor 36 is arranged at an angle, and the distance between the end thereof close to the gearbox 34 and the top of the wheel 4 is greater than the distance between the end thereof away from the gearbox 34 and the top of the wheel 4.

[0096] The coupling 33 is provided to facilitate the installation and removal of the gear box 34 and the flange half shaft 31;

[0097] In order to further reduce the influence of the driving mechanism 3 on the structural size of the device;

[0098] The output shaft of the traction motor 36 is tilted, and the distance between the end thereof close to the gear box 34 and the top of the wheel 4 is greater than the distance between the end thereof away from the gear box 34 and the top of the wheel 4.

[0099] like Figure 13 As shown, the axial direction of the output shaft of the traction motor 36 is tilted, and the angle formed with the horizontal plane is A, and A is 10-20°.

[0100] In some possible implementations,

[0101] The traction device 1 includes a traction pin 11 set in the Y-axis direction, a traction rod 13 that cooperates with the traction pin 11 to rotate around the Y-axis direction and is set along the walking direction, and a frame mounting seat 15 that cooperates with the other end of the traction rod 13 and rotates around the Z-axis direction.

[0102] In some possible implementations,

[0103] The traction pin 11 includes a box body 111, a rib plate 1111 installed in the box body 111, and a pin body 112 installed at the bottom of the box body 111 and arranged along the Y-axis direction; the pin body 112 is rotatably connected to the traction rod 13; the rib plates 1111 are in multiple groups and are arranged along the Y-axis; the rib plates 1111 are provided with weight-reducing holes.

[0104] like Figure 5 、 Figure 6 As shown, the four sides of the rib plate 1111 are respectively connected to the box body 111, and the weight-reducing hole includes an arc-shaped opening formed between two adjacent sides and a weight-reducing through hole arranged at the center of the rib plate 1111. The opening of the arc-shaped opening is arranged on a side close to the box body 111.

[0105] In some possible implementations,

[0106] Each group of ribs 1111 is arranged at an angle.

[0107] Preferably, multiple groups of ribs 1111 are arranged in parallel in the Y-axis direction.

[0108] Compared with the horizontal setting of the ribs 1111, the inclined setting will make the connection surface between it and the inner side of the box 111 larger. When the number of ribs 1111 is reduced, the stiffness requirements of the box 111 can still be met, thereby reducing the weight of the entire traction device 1.

[0109] In some possible implementations, in order to effectively realize the rotational connection between the pin body 112 and the traction rod 13 and alleviate the impact force between the vehicle body and the bogie, effectively realize vibration reduction and reduce noise;

[0110] The traction rod 13 is sleeved on the outside of the pin body 112 , and a rubber joint 113 is sleeved between the traction rod 13 and the pin body 112 .

[0111] Furthermore, the rubber joint 113 is press-fitted onto the traction rod 13 by interference fit. A mounting hole is provided at the end of the traction rod 13 . The rubber joint 113 is located in the mounting hole 1 and is sleeved on the outside of the pin body 112 .

[0112] In some possible implementations,

[0113] A shaft sleeve 12 is provided between the pin body 112 and the bottom of the box body 111 ; a stop cover 14 connected to the pin body 112 is further provided on the side of the traction rod 13 away from the bottom of the box body 111 .

[0114] The purpose of providing the shaft sleeve 12 is to effectively prevent the traction rod 13 from being in hard contact with the bottom of the box body 111 for a long time, thereby preventing damage.

[0115] The cooperation between the stop cover 14 and the shaft sleeve 12 effectively prevents the traction rod 13 from moving along the long direction of the pin shaft;

[0116] Preferably, the stop cover 14 is fixedly connected to the side of the pin body 112 away from the box body 111 by bolts.

[0117] In some possible implementations, in order to effectively realize the rotation of the traction rod around the Z axis, thereby meeting the small angle nodding requirement of the single-axle bogie;

[0118] like Figure 4 、 Figure 7 As shown, the frame mounting seat 15 includes a frame connecting pin 151 arranged along the Z-axis direction and used to fit the traction rod 13, two sets of supporting frame plates 152 fit on the outside of the frame connecting pin 151, and a rubber joint 153 fit between the traction rod 13 and the frame connecting pin 151.

[0119] The first rubber joint 113 and the second rubber joint 153 have certain rigidity and damping, and can alleviate the impact between the car body and the bogie.

[0120] When the single-axle bogie nods around the axis of the wheel 4, the traction rod 13 and the frame 5 connecting seat are connected through the mutual cooperation of the rubber joint 2 153 and the frame connecting pin 151, so that the single-axle steering point can rotate around the frame connecting pin 151, thereby meeting the nodding requirement.

[0121] Furthermore, the second rubber joint 153 is press-fitted onto the traction rod 13 by interference fit. A mounting hole is provided at the end of the traction rod 13 . The second rubber joint 153 is located in the second mounting hole and is sleeved on the outside of the connecting pin.

[0122] In some possible implementations, in order to effectively limit the large arc movement of the traction rod 13 along the Z-axis direction;

[0123] like Figure 7 As shown, two groups of support frame plates 152 are arranged in parallel, and the second rubber joint 153 is located between the two groups of support frame plates 152; a limiting nut is also provided on the frame connecting pin 151, and the limiting nut is located on the side where the two support frame plates 152 are away from each other.

[0124] In some possible implementations,

[0125] like Figure 5 、 Figure 6 As shown, the box body 111 includes a shell, a positioning cover 1112 installed on the shell, and a base plate connected to the pin body 112 and installed at the bottom of the shell; the rib plate 1111 is arranged in the shell; and the positioning cover 1112 is provided with a vehicle body connecting bolt.

[0126] Preferably, the pin body 112 and the bottom plate are smoothly transitioned to each other on one side.

[0127] Furthermore, a positioning column is provided on the positioning cover 1112 , and the positioning column cooperates with the positioning hole provided on the vehicle body to realize the positioning and installation of the traction device 1 .

[0128] In some possible implementations,

[0129] like Figure 3 As shown, the frame 5 includes a U-shaped frame 51 with an opening downward, an elastic suspension device 52 installed on the U-shaped frame 51, and safety wheels 53 respectively installed on the side of the U-shaped frame 51 close to and away from the traction device 1.

[0130] The top of the U-shaped frame 51 is a hollow structure, and the wheels 4 pass through the hollow structure to be located on the track surface of the track 100; both sides of the U-shaped frame 51 are located on both sides of the running direction of the track 100.

[0131] The elastic suspension device 52 on the U-shaped frame 51 is mainly used to control the nodding angle of the rotating frame so that it cannot nod at a large angle.

[0132] The safety wheel 53 will not come into contact with the rail surface of the track 100 under normal operation.

[0133] In some possible implementations,

[0134] like Figure 1-Figure 3 As shown, the guide and stabilizing wheel set 6 includes a guide wheel 61 and a stabilizing wheel 62 which are arranged on the same side and installed on the inner side of the U-shaped frame 51; the guide wheel 61 and the stabilizing wheel 62 are elastically connected to the U-shaped frame 51 respectively.

[0135] Preferably, the guide wheel 61 and the stabilizing wheel 62 have the same structure;

[0136] The safety wheels 53 of the present invention provide a safe travel for the vehicle in the event of a malfunction and are normally isolated from the track 100. The guide wheels 61 and stabilizing wheels 62 have identical structures and are interchangeable. The guide wheels 61 guide the vehicle in curves, while the stabilizing wheels 62 prevent the vehicle from rolling over. Preferably, each set of guide and stabilizing wheels 6 includes two sets of guide wheels 61 arranged along the travel direction and one set of stabilizing wheels 62, with the stabilizing wheels 62 located between the two sets of guide wheels 61.

[0137] The present invention is not limited to the aforementioned specific embodiments, but extends to any new features or any new combination disclosed in this specification, as well as any new method or process steps or any new combination disclosed.

Claims

1. A bogie for a straddle-type monorail engineering vehicle, characterized in that: It includes a frame, a traction device installed on the frame, an independent driving device symmetrically arranged and installed on the frame, and a guide stabilizing wheel set installed on the frame and symmetrically arranged along the running direction; The independent drive device includes an axle-holding frame device installed on the frame and arranged along the traveling direction, a wheel located on one side of the axle-holding frame device, and a drive mechanism located on the side of the axle-holding frame device away from the wheel and passing through the axle-holding frame device and connected to the wheel in a transmission manner; The shaft holding frame device includes an upper fork, a lower cover mounted in conjunction with the upper fork and used to form a mounting cavity, and a double fork arm located at the bottom of the lower cover and hinged to the lower cover; the double fork arm is hinged to the frame on a side away from the lower cover; The upper fork includes a positioning seat 1 and force-bearing arms symmetrically installed on both sides of the positioning seat 1; The lower cover includes a cover body connected to a bottom of the positioning seat and forming a mounting cavity; The installation cavity includes a coupling accommodating cavity arranged on a side away from the wheel, and a bearing positioning groove communicated with the coupling accommodating cavity and coaxially arranged; the bearing positioning groove is arranged on a side close to the wheel.

2. A bogie for a straddle-type monorail engineering vehicle according to claim 1, characterized in that: The driving mechanism includes a flange half-shaft with one end extending into the installation cavity and the other end being coaxially connected to the wheel, a driving bearing sleeved on the half-shaft of the flange half-shaft and located in the bearing positioning groove, and a driving device that is transmission-connected to the end of the flange half-shaft away from the wheel.

3. A bogie for a straddle-type monorail engineering vehicle according to claim 2, characterized in that: The drive device includes a gearbox whose output shaft is coaxially connected to the end of the flange half shaft away from the wheel, a brake disc and a traction motor respectively connected to the gearbox; The output shaft of the gearbox is connected to the flange half-shaft through a coupling, and the coupling is located in the coupling mounting cavity; the output shaft of the traction motor is arranged at an angle, and the distance from the end close to the gearbox to the top of the wheel is greater than the distance from the end away from the gearbox to the top of the wheel.

4. A bogie for a straddle-type monorail engineering vehicle according to any one of claims 1 to 3, characterized in that: The traction device includes a traction pin arranged in the Y-axis direction, a traction rod arranged along the running direction and cooperating with the traction pin to rotate around the Y-axis direction, and a frame mounting seat cooperating with the other end of the traction rod and rotating around the Z-axis direction.

5. The bogie for a straddle-type monorail engineering vehicle according to claim 4, characterized in that: The traction pin includes a box body, a rib plate installed in the box body, and a pin body installed at the bottom of the box body and arranged along the Y-axis direction; the pin body is rotatably connected to the traction rod; the rib plates are in multiple groups and arranged along the Y-axis; and weight-reducing holes are provided on the rib plates.

6. The bogie for a straddle-type monorail engineering vehicle according to claim 5, characterized in that: The frame comprises a U-shaped frame with an opening downward, an elastic suspension device installed on the U-shaped frame, and safety wheels respectively installed on one side of the U-shaped frame close to and away from the traction device.

7. The bogie for a straddle-type monorail engineering vehicle according to claim 6, characterized in that: The guide and stabilizing wheel assembly includes a guide wheel and a stabilizing wheel that are arranged on the same side and installed on the inner side of the U-shaped frame; the guide wheel and the stabilizing wheel are elastically connected to the U-shaped frame respectively.

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