Bogie of straddle type monorail travel rail train

Abstract

The invention discloses a bogie of a straddle type monorail travel rail train, which comprises a rail, and further comprises a framework, a walking wheel set, a stabilizing wheel, suspension structures, a quick-release connecting part and a connecting rod, the framework is I-shaped and comprises two long ends and a short end, the suspension structures are arranged at two end parts of the long ends of the framework, the suspension structures are modularized integrated units, and the quick-release connecting part is arranged on the framework. The suspension structure is in bolted connection with the bottom of the long end of the framework, the walking wheel set comprises a plurality of walking wheels, the two ends of the connecting rod are connected with the walking wheels respectively, and the quick-release connecting part is detachably connected to the bottom of the short end of the framework. One end of the connecting rod is connected with the framework through a spherical joint, and the other end fixes the walking wheel set through a flange. The modular suspension structure is arranged, the spring set and the hydraulic damper are integrated in the modular suspension structure, and the suspension structure can be quickly replaced through the quick-release connecting part; the axle of the stabilizing wheel is rigidly connected with the piston rod of the hydraulic adjusting cylinder, so that the pre-tightening force can be adjusted according to the inclination angle of the track.

Description

Technical Field

[0001] The invention belongs to the technical field of bogies, and in particular relates to a bogie for a straddle-type monorail tourist rail train. Background Art

[0002] With the rapid development of the tourism industry, straddle-type monorail tourist rail trains are gradually being used as a new type of transportation. However, traditional bogie systems suffer from low transmission efficiency, complex structure, and difficult maintenance, which limit their performance improvement and widespread application.

[0003] Chinese invention patent CN115973214A discloses a rail train, a bogie and a frame, wherein the frame includes: side beams and cross beams; the side beams include a first side beam end portion, a side beam middle portion and a second side beam end portion, wherein the first side beam end portion, the side beam middle portion, the second side beam end portion and the cross beam are all titanium alloy integrally cast structural parts. The first side beam end portion, the side beam middle portion, the second side beam end portion and the cross beam are all configured as titanium alloy integrally cast structural parts, which can reduce the weight of each structural part. The aforementioned solution only uses titanium alloy materials to reduce the weight of the bogie and increase the strength of the bogie, but has no obvious effect on usage scenarios with slopes.

[0004] Existing monorail bogies typically suffer from three major flaws: 1. Poor terrain adaptability: Traditional stabilizing wheels are rigidly fixed, making them prone to wheel-rail separation on steep slopes or sharp bends; 2. A single suspension system: The spring group is directly connected to the frame, resulting in a high vibration transmission rate and affecting ride comfort; 3. Low maintenance efficiency: Removal of the wheel assembly requires the complete dismantling of the suspension structure, and maintenance can take up to 4-6 hours.

[0005] For example, when a monorail train is running in a scenic area with a slope greater than 10%, the wear of the stabilizing wheels increases by 300%.

[0006] Therefore, the present invention provides a bogie for a straddle-type monorail tourist rail train to solve the problems mentioned in the above background technology. Summary of the Invention

[0007] In view of the problems raised by the above background technology, the purpose of the present invention is to provide a bogie for a straddle-type monorail tourist rail train, which is easy to install and maintain and has increased climbing efficiency when used in scenes with slopes.

[0008] In order to achieve the above technical objectives, the technical solutions adopted by the present invention are as follows: A bogie for a straddle-type monorail tourist rail train comprises a track, a frame, a running wheel assembly, a stabilizing wheel, a suspension structure, a quick-release connection portion, and a connecting rod. The frame is I-shaped and comprises two long ends and a short end. The suspension structures are disposed at both ends of the long ends of the frame. The suspension structure is a modular integrated unit and is bolted to the bottom of the long ends of the frame. The running wheel assembly comprises a plurality of running wheels. The two ends of the connecting rod are respectively connected to the running wheels. The quick-release connection portion is detachably connected to the bottom of the short end of the frame. It also includes a ball joint, a flange and a hydraulic adjustment cylinder. One end of the connecting rod is connected to the frame through the ball joint, and the other end is fixed to the running wheel group through the flange. The stabilizing wheel is hinged to the end of the quick-release connection part through the hydraulic adjustment cylinder.

[0009] It is further defined that an inverted V-shaped drainage channel is provided at the bottom of the short end of the frame.

[0010] It is further defined that the drainage channel is arranged along the longitudinal center line of the short end of the frame, and a plurality of drainage ports are provided on both sides of the drainage channel.

[0011] The quick-release connection further defines a portion comprising a tapered locating pin, a self-locking bolt assembly, and a top boss. The top boss is fixedly mounted on the side wall of the suspension structure, the tapered locating pin extends through the top boss of the suspension structure, and the bolt assembly applies a preload force of 50 kN or greater. This structural design, combining the tapered pin and self-locking bolt of the quick-release connection, enables blind replacement, meaning maintenance personnel do not need to visually align the connection.

[0012] It is further defined that it also includes a connecting rod sleeve, which is fixedly arranged on the inner wall of the connecting rod. A transverse buffer spring is provided in the middle of the connecting rod, and both ends of the buffer spring are welded to the inner wall of the connecting rod sleeve. The buffer spring is used to limit the lateral displacement of the connecting rod to ±15mm.

[0013] It is further defined that a spring group and a hydraulic damper are arranged in parallel inside the suspension structure, the hydraulic damper is connected to the bottom of the spring group, and the upper end of the spring group is connected to the frame.

[0014] It is further defined that a wheel axle is embedded in the stabilizing wheel, a piston rod is provided in the hydraulic adjustment cylinder, the wheel axle of the stabilizing wheel is rigidly connected to the piston rod of the hydraulic adjustment cylinder, and the cylinder body of the hydraulic adjustment cylinder is hinged at the bottom end of the connecting part.

[0015] The running wheel assembly is further defined as having spokes and a rim. The spokes are radially hollowed out, and the inner side of the rim is slotted and embedded with a ceramic wear-resistant plate. The thickness of the wear-resistant plate is 1 / 3 of the rim height. This structural design, which replaces the spokes of the running wheel assembly with a hollow design, reduces weight by at least 30% while maintaining strength. The wear-resistant ceramic plate embedded in the rim enhances the service life of the running wheel assembly.

[0016] It is further defined that the stiffness curve of the buffer spring is: when the buffer spring is displaced 0-5 mm, the stiffness is 50 N / mm; when the buffer spring is displaced 5-15 mm, the stiffness is 120 N / mm.

[0017] Beneficial effects of the present invention: The present invention provides a modular suspension structure that integrates a spring group and a hydraulic damper. The suspension structure can be quickly replaced through a quick-release connection. A stabilizing wheel and a hydraulic adjustment cylinder are provided, and the wheel axle of the stabilizing wheel is rigidly connected to the piston rod of the hydraulic adjustment cylinder. This structural design can adjust the preload force according to the track inclination. By setting up a connecting rod, a ball joint and a transverse buffer spring, the degree of freedom of the connecting rod and the three-dimensional shock absorption capability are improved, and the torsional rigidity is greatly improved; The running wheel spokes have been hollowed out, reducing weight by at least 30% while maintaining strength. Wear-resistant ceramic inserts are embedded in the wheel rims to extend the life of the running wheel. The tapered pins and self-locking bolts in the quick-release connection allow for blind replacement, eliminating the need for visual alignment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention can be further illustrated by the non-limiting examples given in the accompanying drawings; Figure 1 This is a structural schematic diagram of an embodiment of a bogie of a straddle-type monorail tourist rail train according to the present invention; Figure 2 A top view of an embodiment of a bogie for a straddle-type monorail tourist rail train according to the present invention; Figure 3 A side view of an embodiment of a bogie for a straddle-type monorail tourist rail train according to the present invention; Figure 4 A side sectional view of an embodiment of a bogie of a straddle-type monorail tourist rail train according to the present invention; Figure 5 A side view of an embodiment of a bogie for a straddle-type monorail tourist rail train according to the present invention; Figure 6 The present invention provides a cross-sectional view of a connecting rod of a bogie embodiment of a straddle-type monorail tourist rail train.

[0019] The symbols of the main components are explained as follows: frame 1, drainage channel 1a, running wheel group 2, spoke 2a, rim 2b, stabilizing wheel 3, suspension structure 4, top boss 4a, quick-release connection 5, tapered locating pin 5a, track 6, bolt assembly 7, connecting rod 8, connecting rod sleeve 8b, spring group 9, hydraulic damper 10, ball joint 11, hydraulic adjusting cylinder 12, buffer spring 14, wear-resistant plate 15, flange 16. DETAILED DESCRIPTION

[0020] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying 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 limiting the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0021] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] like Figure 1 As shown, a bogie of a straddle-type monorail tourist rail train of the present invention includes a track 6, a frame 1, a running wheel group 2, a stabilizing wheel 3, a suspension structure 4, a quick-release connection portion 5, and a connecting rod 8. The frame 1 is in an I-shape, including two long ends and one short end. The suspension structure 4 is provided at both ends of the long end of the frame 1. The suspension structure 4 is a modular integrated unit. The suspension structure 4 is bolted to the bottom of the long end of the frame 1. The running wheel group 2 includes a plurality of running wheels. The two ends of the connecting rod 8 are respectively connected to the running wheels. The quick-release connection portion 5 is detachably connected to the bottom of the short end of the frame 1. It also includes a ball joint 11, a flange 16 and a hydraulic adjustment cylinder 12. One end of the connecting rod 8 is connected to the frame 1 through the ball joint 11, and the other end is fixed to the running wheel group 2 through the flange 16. The stabilizing wheel 3 is hinged to the end of the quick-release connection part 5 through the hydraulic adjustment cylinder 12.

[0024] In practical applications of this embodiment, an inverted V-shaped drainage channel 1a is provided at the bottom of the short end of the frame 1 .

[0025] In practical applications of this embodiment, the drainage channel 1a is arranged along the longitudinal center line of the short end of the frame 1, and a plurality of drainage ports are provided on both sides of the drainage channel 1a.

[0026] In practical applications of this embodiment, the quick-release connection 5 includes a tapered locating pin 5a, a self-locking bolt assembly 7, and a top boss 4a. The top boss 4a is fixed to the sidewall of the suspension structure 4. The tapered locating pin 5a extends through the top boss 4a of the suspension structure 4. The bolt assembly 7 applies a preload force of 50 kN or greater. This structural design, combining the tapered locating pin 5a of the quick-release connection with the self-locking bolt assembly 7, enables blind replacement, meaning maintenance personnel do not need to visually align the components.

[0027] In the actual application of this embodiment, it also includes a connecting rod sleeve 8b, which is fixedly arranged on the inner wall of the connecting rod 8. A transverse buffer spring 14 is provided in the middle of the connecting rod 8. Both ends of the buffer spring 14 are welded to the inner wall of the connecting rod sleeve 8b. The buffer spring 14 is used to limit the lateral displacement of the connecting rod 8 by ±15 mm.

[0028] In practical applications of this embodiment, a spring group 9 and a hydraulic damper 10 are provided in parallel inside the suspension structure 4 . The hydraulic damper 10 is connected to the bottom of the spring group 9 , and the upper end of the spring group 9 is connected to the frame 1 .

[0029] In the actual application of this embodiment, the stabilizing wheel 3 is embedded with an axle, the hydraulic adjustment cylinder 12 is provided with a piston rod, the axle of the stabilizing wheel 3 is rigidly connected to the piston rod of the hydraulic adjustment cylinder 12, and the cylinder body of the hydraulic adjustment cylinder 12 is hinged to the bottom end of the connecting part 5.

[0030] In practical applications of this embodiment, the running wheel assembly 2 is internally provided with spokes 2a and a rim 2b. The spokes 2a are radially hollowed out, while the inner side of the rim 2b is slotted and embedded with a ceramic wear-resistant plate 15. The wear-resistant plate 15 is one-third the thickness of the rim. This structural design, which replaces the spokes 2a of the running wheel assembly 2 with a hollowed-out design, reduces weight by at least 30% while maintaining strength. The wear-resistant ceramic plate embedded in the rim extends the service life of the running wheel assembly 2.

[0031] In actual application of this embodiment, the stiffness curve of the buffer spring 14 is: when the buffer spring 14 is displaced 0-5 mm, the stiffness is 50 N / mm; when the buffer spring 14 is displaced 5-15 mm, the stiffness is 120 N / mm.

[0032] Example 1: Mountain Tourism Route (Slope 22%) Working process of the hydraulic stabilizing wheel: When the train enters a 15° slope, the train speed decreases. The staff controls and adjusts the hydraulic adjustment cylinder 12 to push the stabilizing wheel 3 up 12mm, thereby restoring the contact force between the stabilizing wheel 3 and the traveling wheel group 2 and maintaining the wheel-rail gap within the safe range of 0.5-1mm. The measured data shows that the braking distance is shortened by 31%.

[0033] Example 2: The train is traveling on a sharp curve The anti-centrifugal process of the connecting rod 8: when the train turns, the car body generates a lateral force of 15kN; the ball joint 11 of the connecting rod 8 deflects 3.2°, releasing 60% of the lateral force, and the remaining 6kN force is absorbed by the lateral buffer spring 14: the initial 5mm deformation energy consumption (50N / mm), and then when it is compressed to 10mm, the stiffness increases to 120N / mm rigid limit, which controls the train body roll angle within 3°.

[0034] Maintenance operation: To disassemble the connecting rod 8, you only need to loosen the bolts of the flange, which is convenient and quick.

[0035] Example 3: Alpine Regions This embodiment implements low-temperature improvement measures: the spring assembly 9 is made of Fe-12Cr alloy steel, which has an elastic modulus decay rate of less than 3% at -40°C; the hydraulic oil of the hydraulic adjustment cylinder 12 is phosphate-based aviation oil, with a kinematic viscosity of 120 cSt at -40°C (conventional mineral oil is greater than 800 cSt); and an insulation jacket is installed on the entire suspension structure 4.

[0036] Example 4: Dusty mining area This embodiment adopts a dustproof sealing design: an outer shell is installed on the outside of the suspension structure 4, the outer shell of the suspension structure 4 is sealed by welding, and a fluororubber sealing ring is used at the connection; the drainage channel 1a is flushed twice a day; this structural design makes the wear rate of the wear-resistant plate 15 much lower than that of ordinary steel wheels.

[0037] The technical effects of the present invention are compared with those of the traditional bogie as shown in the following table: Performance indicators Traditional bogie The present invention Improvement Maximum adaptive slope 10% 25% 150% Lateral vibration acceleration 0.5g 0.15g 70% reduction Stabilizer wheel replacement cycle 6 months 18 months 200% Emergency braking distance (40km / h) 55m 38m 31% reduction Module replacement time 240 minutes 15 minutes 94% reduction In summary, the present invention provides a modular suspension structure 4 that integrates a spring assembly 9 and a hydraulic damper 10. The quick-release connection 5 allows for rapid replacement of the suspension structure 4. Furthermore, the stabilizing wheel 3 and the hydraulic adjustment cylinder 12 are provided, and the wheel axle of the stabilizing wheel 3 is rigidly connected to the piston rod of the hydraulic adjustment cylinder 12. This structural design allows the preload force to be adjusted according to the track inclination. By providing the connecting rod 8, the ball joint 11 and the transverse buffer spring 14, the degree of freedom and three-dimensional shock absorption capability of the connecting rod 8 are improved, and the torsional rigidity is greatly improved; The running wheel spokes have been hollowed out, reducing weight by at least 30% while maintaining strength. Wear-resistant ceramic inserts are embedded in the wheel rims to extend the life of the running wheel. The tapered pin 5a of the quick-release connector 5, combined with the self-locking bolt 7, enables blind replacement, eliminating the need for visual alignment by maintenance personnel.

[0038] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the present invention. Anyone skilled in the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by one of ordinary skill in the art without departing from the spirit and technical principles disclosed herein are intended to be covered by the claims of the present invention.

Claims

1. A bogie for a straddle-type monorail tourist rail train, comprising a track (6), characterized in that: It also includes a frame (1), a running wheel group (2), a stabilizing wheel (3), a suspension structure (4), a quick-release connection part (5) and a connecting rod (8), wherein the frame (1) is in an I-shape and includes two long ends and one short end, the suspension structure (4) is arranged at both ends of the long end of the frame (1), the suspension structure (4) is a modular integrated unit, the suspension structure (4) is connected to the bottom bolt of the long end of the frame (1), the running wheel group (2) includes a plurality of running wheels, the two ends of the connecting rod (8) are respectively connected to the running wheels, and the quick-release connection part (5) is detachably connected to the bottom of the short end of the frame (1); It also includes a ball joint (11), a flange (16) and a hydraulic adjustment cylinder (12), one end of the connecting rod (8) is connected to the frame (1) through the ball joint (11), and the other end is fixed to the running wheel group (2) through the flange (16), and the stabilizing wheel (3) is hinged to the end of the quick-release connection part (5) through the hydraulic adjustment cylinder (12).

2. The bogie of a straddle-type monorail tourist rail train according to claim 1, characterized in that: An inverted V-shaped drainage channel (1a) is provided at the bottom of the short end of the frame (1).

3. The bogie of a straddle-type monorail tourist rail train according to claim 1, characterized in that: The drainage channel (1a) is arranged along the longitudinal centerline of the short end of the frame (1), and a plurality of drainage openings are provided on both sides of the drainage channel (1a).

4. The bogie of a straddle-type monorail tourist rail train according to claim 1, characterized in that: The quick-release connection portion (5) comprises a tapered positioning pin (5a), a self-locking bolt assembly (7) and a top boss (4a), wherein the top boss (4a) is fixedly arranged on the side wall of the suspension structure (4), the tapered positioning pin (5a) is penetrated and arranged on the top boss (4a) of the suspension structure (4), and the bolt assembly (7) applies a pre-tightening force ≥50 kN.

5. The bogie of a straddle-type monorail tourist rail train according to claim 1, characterized in that: It also includes a connecting rod sleeve (8b), the connecting rod sleeve (8b) is fixedly arranged on the inner wall of the connecting rod (8), a transverse buffer spring (14) is provided in the middle of the connecting rod (8), both ends of the buffer spring (14) are welded to the inner wall of the connecting rod sleeve (8b), and the buffer spring (14) is used to limit the transverse displacement of the connecting rod (8) to ±15 mm.

6. The bogie of a straddle-type monorail tourist rail train according to claim 1, characterized in that: A spring group (9) and a hydraulic damper (10) are arranged in parallel inside the suspension structure (4); the hydraulic damper (10) is connected to the bottom of the spring group (9); and the upper end of the spring group (9) is connected to the frame (1).

7. The bogie of a straddle-type monorail tourist rail train according to claim 1, characterized in that: A wheel axle is embedded in the stabilizing wheel (3), a piston rod is provided in the hydraulic adjustment cylinder (12), the wheel axle of the stabilizing wheel (3) is rigidly connected to the piston rod of the hydraulic adjustment cylinder (12), and the cylinder body of the hydraulic adjustment cylinder (12) is hinged to the bottom end of the connecting portion (5).

8. The bogie of a straddle-type monorail tourist rail train according to claim 1, characterized in that: The running wheel set (2) is provided with spokes (2a) and a rim (2b) inside. The spokes (2a) of the running wheel set (2) are hollowed out in a radial shape. The inner side of the rim (2b) is grooved and inlaid with a ceramic wear-resistant sheet (15). The thickness of the wear-resistant sheet (15) is 1 / 3 of the height of the rim.

9. The bogie of a straddle-type monorail tourist rail train according to claim 5, characterized in that: The stiffness curve of the buffer spring (14) is as follows: when the buffer spring (14) is displaced 0-5 mm, the stiffness is 50 N / mm; when the buffer spring (14) is displaced 5-15 mm, the stiffness is 120 N / mm.

Images