Meter gauge power type single-axle bogie and rail engineering truck

Abstract

The bogie comprises a framework of a cavity structure, a wheel pair assembly arranged at the lower end of the framework through a first suspension device, a power assembly arranged on one side of the lower end of the framework in a suspension mode, and a brake assembly arranged on one side of the lower end of the framework. The brake assembly is rigidly arranged on the other side of the lower end of the framework. The meter gauge power type single-axle bogie is suitable for railway lines with the gauge being 1000 mm, the wheel diameter is small, the dead weight is light, the height is low, the height of the floor face of a vehicle body can be reduced, the load gravity center is reduced, and the load space of the vehicle is increased.

Description

Technical Field

[0001] The present invention belongs to the technical field of single-axle bogies, and more specifically, relates to a meter-gauge powered single-axle bogie and a rail engineering vehicle. Background Art

[0002] The bogie is located at the bottom of the vehicle, between the vehicle body and the track. It is an important load-bearing component and force transmission element of the railway vehicle, and is a key component to ensure the quality of vehicle operation. Most of the existing railway vehicle bogies are two-axle bogies with standard track gauge, which have a high critical speed, but are heavy, noisy, and have poor curve passing performance.

[0003] With the rapid development of cities and technological progress, logistics demand has increased rapidly. In order to adapt to the complex and changeable operating environment and meet the requirements of frequent braking and transportation, it is necessary to develop a meter-gauge bogie with a simple structure, light weight, low noise, small space occupation, good curve passing performance, reliable braking, and independent movement. Summary of the invention

[0004] The purpose of the present invention is to provide a meter-gauge powered single-axle bogie in view of the deficiencies in the prior art, so as to solve the problem that most existing railway vehicle bogies are two-axle bogies of standard gauge, which have high critical speed, heavy weight, high noise and poor curve passing performance.

[0005] In order to achieve the above object, the present invention provides a meter-gauge powered single-axle bogie, comprising:

[0006] A frame, wherein the frame is a chamber structure;

[0007] A wheelset assembly, wherein the wheelset assembly is arranged at the lower end of the frame through a first suspension device;

[0008] A power assembly, the power assembly is suspended on one side of the lower end of the frame;

[0009] A brake assembly is rigidly arranged on the other side of the lower end of the frame.

[0010] Optionally, the wheelset comprises an axle, and rubber elastic wheels are respectively arranged at both ends of the axle;

[0011] The first suspension device comprises a load-bearing saddle, one end of which is connected to the frame via an hourglass-shaped rubber spring, and the other end of which is provided with a bearing connected to the wheelset assembly.

[0012] Optionally, the framework:

[0013] A welded frame body, wherein a through slot is provided on the welded frame body, and a central traction rod is provided at one end of the welded frame body;

[0014] A speed sensor and a bearing overcurrent protection device, wherein the speed sensor and the bearing overcurrent protection device are respectively arranged at two ends of the wheel axle;

[0015] An axle temperature monitoring device, wherein the axle temperature monitoring device is arranged on the axle near the bearing;

[0016] A plurality of load sensors are arranged on the periphery of the welded frame body and are used to monitor the load and unbalanced load status of the frame.

[0017] Optionally, the brake assembly comprises:

[0018] A mounting seat, the mounting seat is arranged on the frame, and electric clamps are respectively arranged at both ends of the mounting seat;

[0019] Two brake discs are arranged on the wheel axle at an interval, and the brake discs cooperate with the electric clamp.

[0020] Optionally, the frame is further provided with a sliding anti-nodding mechanism, and the sliding anti-nodding mechanism comprises:

[0021] A torsion bar, the torsion bar is inserted into the frame, the two ends of the torsion bar are exposed from the frame, and the torsion bar is located on the forward center line of the frame;

[0022] a torsion arm, one end of which is connected to the exposed end of the torsion bar;

[0023] A sliding seat, the sliding seat is connected to the vehicle body, and a slider is horizontally slidably connected in the sliding seat;

[0024] A connecting arm, two ends of which are rotatably connected to the slider and the torsion arm respectively.

[0025] Optionally, the torsion arm is arc-shaped with an opening facing upward.

[0026] Optionally, it further comprises a second suspension device for connecting to the frame, wherein the second suspension device comprises

[0027] At least two transverse stops, the two transverse stops are respectively arranged at the upper end of the welded frame body and located on both sides of the axial direction of the wheelset;

[0028] A lateral telescopic damper, one end of which is connected to the inner wall of the through slot, and the other end of which is connected to the vehicle frame;

[0029] Four rubber-steel laminated springs are respectively disposed at four corners of the upper end of the frame and are used to transmit vertical force and part of the deflection force.

[0030] Optionally, the power assembly includes:

[0031] A traction motor, wherein the traction motor is connected to the frame via a motor suspension rod, and elastic rubber joints are respectively provided at both ends of the motor suspension rod;

[0032] A gearbox assembly, two ends of which are respectively connected to the wheelset assembly and the traction motor.

[0033] Optionally, a third rail current collector is provided at the lower end of the frame.

[0034] The present invention also provides a rail engineering vehicle, comprising: the above-mentioned meter-gauge powered single-axle bogie.

[0035] The present invention provides a meter-gauge powered single-axle bogie, which has the following beneficial effects:

[0036] 1. The meter-gauge powered single-axle bogie is suitable for railway lines with a track gauge of 1000mm. It has a small wheel diameter, light weight, and low height, which can reduce the height of the vehicle floor, lower the load center of gravity, and increase the vehicle load space.

[0037] 2. The bogie is a single-axle type. Compared with conventional bogies, it has a simple structure and is easy to maintain. It is more suitable for short-body train formations, is conducive to passing curves (especially small-radius curves), and better adapts to complex line conditions.

[0038] 3. The use of rubber elastic wheel structure can further reduce the unsprung weight, reduce operating vibration and noise.

[0039] 4. The first suspension device uses an hourglass-shaped rubber spring, which has no friction loss, is light in weight, and has a simple structure. It can absorb high-frequency vibrations, reduce vehicle running noise, and improve running stability and safety.

[0040] 5. Install a sliding anti-nodding torsion bar to reduce the nodding movement of the bogie without affecting the vehicle's small curve passing performance, thereby ensuring the vehicle's running stability and small curve passing performance.

[0041] 6. The third rail current collection method is adopted, which eliminates the need to lay contact network, reduces space waste, and has less impact on the urban landscape; the installation cost is low, maintenance is convenient, and the vehicle limit requirements are small; it is suitable for lines with a small turning radius.

[0042] 7. The braking method that combines electric braking and disc braking ensures the sensitivity and timeliness of braking, making the vehicle operation safer and more reliable. Under braking conditions, the traction motor converts the mechanical energy generated by the wheelset assembly into electrical energy, which is then fed back to the power grid through the third-rail current collector, which can reduce energy loss and carbon emissions.

[0043] 8. Reasonable arrangement of monitoring devices such as axle temperature monitoring sensors, speed sensors, load sensors, etc. provides a basis for the intelligent control of vehicle operation and further increases operational reliability.

[0044] Other features and advantages of the present invention will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] The above and other objects, features and advantages of the present invention will become more apparent through a more detailed description of exemplary embodiments of the present invention in conjunction with the accompanying drawings, wherein like reference numerals generally represent like components throughout the exemplary embodiments of the present invention.

[0046] Figure 1 A schematic structural diagram of a meter-gauge powered single-axle bogie according to an embodiment of the present invention is shown.

[0047] Figure 2 A schematic structural diagram of a wheelset assembly of a meter-gauge powered single-axle bogie according to an embodiment of the present invention is shown.

[0048] Figure 3 A schematic structural diagram of a brake assembly of a meter-gauge powered single-axle bogie according to an embodiment of the present invention is shown.

[0049] Figure 4 A schematic structural diagram of a power assembly of a meter-gauge powered single-axle bogie according to an embodiment of the present invention is shown.

[0050] Figure 5 A schematic structural diagram of a sliding anti-nodding mechanism of a meter-gauge powered single-axle bogie according to an embodiment of the present invention is shown.

[0051] Figure 6 A schematic structural diagram of a first suspension device of a meter-gauge powered single-axle bogie according to an embodiment of the present invention is shown.

[0052] Figure 7 A schematic structural diagram of a second suspension device of a meter-gauge powered single-axle bogie according to an embodiment of the present invention is shown.

[0053] Figure 8 A schematic top view of a meter-gauge powered single-axle bogie according to an embodiment of the present invention is shown.

[0054] Fig. 9 A schematic side view of a meter-gauge powered single-axle bogie according to an embodiment of the present invention is shown.

[0055] Fig.10 A schematic diagram of a conversion circuit of a meter-gauge powered single-axle bogie according to an embodiment of the present invention is shown.

[0056] Description of reference numerals:

[0057] 1-wheelset assembly, 2-brake assembly, 3-frame, 4-power assembly, 5-central traction rod, 6-sliding anti-nodding mechanism, 8-first suspension device, 9-second suspension device, 10-third rail current collector;

[0058] 1.1-wheel axle, 1.2-rubber elastic wheel;

[0059] 2.1-mounting seat, 2.2-electric clamp, 2.3-brake disc;

[0060] 4.1-gearbox assembly, 4.2-traction motor, 4.3-motor boom;

[0061] 6.1-torsion bar, 6.2-torsion arm, 6.3-sliding seat, 6.4-sliding block, 6.5-connecting arm;

[0062] 7.1-Bearing over-current protection device, 7.2-Speed ​​sensor, 7.3-Axle temperature monitoring device, 7.4-Load sensor;

[0063] 8.1-bearing, 8.2-load saddle, 8.3-rubber spring;

[0064] 9.1-Lateral stop, 9.2-Lateral oil pressure shock absorber, 9.3-Rubber-steel laminated spring. DETAILED DESCRIPTION

[0065] The preferred embodiments of the present invention will be described in more detail below. Although the preferred embodiments of the present invention are described below, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to make the present invention more thorough and complete, and to fully convey the scope of the present invention to those skilled in the art.

[0066] like Figure 1-4 As shown, a meter-gauge powered single-axle bogie comprises:

[0067] Frame 3, frame 3 is a chamber structure;

[0068] The wheelset assembly 1 is arranged at the lower end of the frame 3 through a first suspension device 8;

[0069] A power assembly 4, which is suspended on one side of the lower end of the frame 3;

[0070] The brake assembly 2 is rigidly arranged on the other side of the lower end of the frame 3.

[0071] Specifically, the chamber structure reduces weight while being able to hide circuits inside. The power assembly 4 and the wheelset assembly 1 are independently suspended on the frame 3 to reduce vibration while ensuring driving stability. The brake assembly 2 is rigidly connected to ensure braking force.

[0072] In this embodiment, the wheelset comprises an axle 1.1, and rubber elastic wheels 1.2 are respectively arranged at both ends of the axle 1.1;

[0073] The first suspension device 8 comprises a load-bearing saddle 8.2, one end of which is connected to the frame 3 via an hourglass-shaped rubber spring 8.3, and the other end of which is provided with a bearing 8.1 connected to the wheelset assembly 1.

[0074] Specifically, the rubber elastic wheel 1.2 can further buffer vibrations and improve running stability, and the hourglass-shaped rubber spring 8.3 can better transmit the vertical force and lateral force during operation.

[0075] In this embodiment, Framework 3:

[0076] A welded frame body, on which a through groove matching the rubber elastic wheel 1.2 is arranged, and a central traction rod 5 is arranged at one end of the welded frame body;

[0077] The speed sensor 7.2 and the device 7.1 for preventing the bearing 8.1 from over-current are respectively arranged at the two ends of the axle 1.1;

[0078] Axle temperature monitoring device 7.3, the axle temperature monitoring device 7.3 is arranged on the wheel axle 1.1 close to the bearing 8.1;

[0079] Multiple load sensors 7.4 are arranged on the periphery of the welded frame body to monitor the load and unbalanced load status of the frame 3.

[0080] Specifically, by reducing weight through slots and facilitating maintenance, the anti-bearing 8.1 over-current device 7.1 can release static electricity generated during vehicle operation, reducing the safety risk of accidental power-on; the speed sensor 7.2 can transmit speed data during vehicle operation in real time, providing basic data for vehicle intelligent driving; the axle temperature monitoring device 7.3 can monitor the temperature changes of the bearing 8.1 and the axle 1.1, avoiding bearing 8.1 failures caused by unexpected situations, and reducing the risk of vehicle derailment; the load sensor 7.4 monitors the load and eccentric load on both sides of the bogie in real time, and responds to unexpected situations in a timely manner. At least two load sensors 7.4 are symmetrically arranged along the forward direction.

[0081] Furthermore, the ends of the central traction rod 5 are elastic rubber joints, which can filter certain vibrations, making the traction characteristics better and at the same time have a certain inhibitory effect on the nodding movement of the bogie.

[0082] In this embodiment, the brake assembly 2 includes:

[0083] A mounting seat 2.1, the mounting seat 2.1 is arranged on the frame 3, and electric clamps 2.2 are respectively arranged at both ends of the mounting seat 2.1;

[0084] Two brake discs 2.3 are arranged on the wheel axle 1.1 at an interval, and the brake discs 2.3 cooperate with the electric clamp 2.2.

[0085] Specifically, the electric clamp 2.2 cooperates with the brake disc 2.3 to brake the wheel pair assembly 1, and adopts a braking method combining electric braking and disc braking, which ensures the sensitivity and timeliness of braking and makes the vehicle operation safer and more reliable.

[0086] In this embodiment, a sliding anti-nodding mechanism 6 is also provided on the frame 3, and the sliding anti-nodding mechanism 6 includes:

[0087] Torsion bar 6.1, the torsion bar 6.1 is inserted into the frame 3, both ends of the torsion bar 6.1 are exposed from the frame 3, and the torsion bar 6.1 is located on the forward center line of the frame 3;

[0088] A torsion arm 6.2, one end of which is connected to the exposed end of the torsion bar 6.2;

[0089] A sliding seat 6.3, the sliding seat 6.3 is connected to the vehicle body, and a slider 6.4 is horizontally slidably connected in the sliding seat 6.3;

[0090] The connecting arm 6.5 has two ends which are rotatably connected to the slider 6.4 and the torsion arm 6.2 respectively.

[0091] Specifically, the travel stability is improved by the sliding anti-nodding mechanism 6. When the frame 3 nods relative to the vehicle body, the sliding seat 6.3 generates a horizontal force on the slider 6.4, and the connecting arm 6.5 moves in the opposite direction, thereby generating a torque in the opposite direction on the torsion arm 6.2, causing the torsion bar 6.1 to twist; at this time, the torsion bar 6.1 generates a reverse torsional elastic force, which in turn inhibits the reverse movement of the connecting arm 6.5, thereby inhibiting the nodding movement of the frame 3. At the same time, the contact mode of the slider 6.4 does not affect the vehicle's passing through small curves.

[0092] Furthermore, the torsion bar 6.1 is arranged along the forward direction, with both ends exposed. When the frame 3 moves horizontally, the front and rear connecting arms 6.5 move synchronously without generating reaction force.

[0093] In this embodiment, the torsion arm 6.2 is arc-shaped with its opening facing upward.

[0094] Specifically, the arc shape is used to ensure strength and avoid the deformation of the rod shape, while a suitable shape is designed to avoid and ensure the timeliness of transmission.

[0095] In this embodiment, a second suspension device 9 for connecting to the vehicle frame is also included. The second suspension device 9 includes

[0096] At least two transverse stops 9.1, which are respectively arranged at the upper end of the welded frame body and on both sides of the axial direction of the wheelset;

[0097] A lateral telescopic damper, one end of which is connected to the inner wall of the through slot, and the other end of which is connected to the vehicle frame;

[0098] Four rubber-steel laminated springs 9.3 are respectively provided at the four corners of the upper end of the frame 3 for transmitting vertical force and part of the deflection force.

[0099] Specifically, the rubber-steel laminated spring 9.3 is used to connect the car body and the frame 3. Each single-axle bogie is provided with four sets of rubber-steel laminated springs 9.3 to transmit horizontal force and part of the deflection force, and two sets of lateral oil pressure shock absorbers 9.2 are provided to ensure the lateral stability of the car body, the characteristics of the single-axle structure, and the stability and stability of the vehicle operation.

[0100] In this embodiment, the power assembly 4 includes:

[0101] Traction motor 4.2, traction motor 4.2 is connected to frame 3 through motor suspension rod 4.3, and elastic rubber joints are respectively arranged at both ends of motor suspension rod 4.3;

[0102] The gearbox assembly 4.1 has two ends connected to the wheelset assembly 1 and the traction motor 4.2 respectively.

[0103] Specifically, the two ends of the motor suspension rod 4.3 are elastic rubber joints, which can fix the traction motor 4.2 to avoid vibration; an axle-suspended drive structure is adopted, and the traction motor 4.2 transmits the power torque to the wheelset assembly 1 through the gearbox assembly 4.1 to ensure the smooth operation of the vehicle.

[0104] In this embodiment, a third rail current collector 10 is provided at the lower end of the frame 3 .

[0105] Specifically, with the increasing land cost and high tunnel excavation cost, some lines are not suitable for installing overhead wires. Therefore, a third rail current collector 10 is arranged on the frame 3 to provide a power source to adapt to different scenarios.

[0106] Further, such as Fig.10 As shown, a conversion circuit is provided between the traction motor 4.2 and the third rail current collector 10;

[0107] Under traction conditions, the traction motor 4.2 converts the electrical energy provided by the third rail current collector 10 into mechanical energy, and the mechanical energy is transmitted to the wheelset assembly 1 through the gearbox assembly 4.1.

[0108] Under braking conditions, the traction motor 4.2 converts the mechanical energy generated by the wheelset assembly 1 into electrical energy, which is then fed back to the grid via the third rail current collector 10 (regenerative braking).

[0109] The present invention also provides a rail engineering vehicle, comprising: the above-mentioned meter-gauge powered single-axle bogie.

[0110] Specifically, the rail engineering vehicles can be used independently or in series, and can be used individually or in series as a power locomotive to pull unpowered sections.

[0111] When a meter-gauge powered single-axle bogie is used in this embodiment, taking the use of connecting a carriage as an example:

[0112] Compared with conventional bogies, this bogie has only one set of wheels, and has a small wheel diameter, light weight, and low height, which can reduce the height of the car body floor surface and increase the vehicle load. The first suspension device is equipped with an hourglass-shaped rubber spring, which has no friction loss, light weight, simple structure, can absorb high-frequency vibration, reduce the vehicle's operating noise, and improve the running stability and safety. The braking method combined with electric braking and disc braking is selected to ensure the sensitivity and timeliness of braking, and ensure the safety and reliability of vehicle operation. The third rail current collection method is adopted, and there is no need to lay a contact network on the line, which has small requirements for vehicle limits, reduces space waste, and reduces line costs. The installation of a sliding anti-nodding torsion bar reduces the nodding movement of the bogie and does not affect the vehicle's small curve passing performance, ensuring the vehicle's running stability and small curve passing performance. The reasonable arrangement of monitoring devices such as axle temperature monitoring sensors, speed sensors, and load sensors provides a basis for the intelligent control of vehicle operation, further increases the operating reliability, and meets the requirements of automated transportation.

[0113] The embodiments of the present invention have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments.

Claims

1. A meter-gauge powered single-axle bogie, characterized in that: include: A frame, wherein the frame is a chamber structure; A wheelset assembly, wherein the wheelset assembly is arranged at the lower end of the frame through a first suspension device; A power assembly, the power assembly is suspended on one side of the lower end of the frame; A brake assembly is rigidly arranged on the other side of the lower end of the frame.

2. The meter-gauge powered single-axle bogie according to claim 1, characterized in that: The wheel set comprises a wheel axle, and rubber elastic wheels are respectively arranged at both ends of the wheel axle; The first suspension device comprises a load-bearing saddle, one end of which is connected to the frame via an hourglass-shaped rubber spring, and the other end of which is provided with a bearing connected to the wheelset assembly.

3. The meter-gauge powered single-axle bogie according to claim 2, characterized in that: The framework: A welded frame body, wherein a through slot is provided on the welded frame body, and a central traction rod is provided at one end of the welded frame body; A speed sensor and a bearing overcurrent protection device, wherein the speed sensor and the bearing overcurrent protection device are respectively arranged at two ends of the wheel axle; An axle temperature monitoring device, wherein the axle temperature monitoring device is arranged on the axle near the bearing; A plurality of load sensors are arranged on the periphery of the welded frame body and are used to monitor the load and unbalanced load status of the frame.

4. The meter-gauge powered single-axle bogie according to claim 2, characterized in that: The brake assembly comprises: A mounting seat, the mounting seat is arranged on the frame, and electric clamps are respectively arranged at both ends of the mounting seat; Two brake discs are arranged on the wheel axle at an interval, and the brake discs cooperate with the electric clamp.

5. The meter-gauge powered single-axle bogie according to claim 1, characterized in that: The frame is also provided with a sliding anti-nodding mechanism, which comprises: A torsion bar, the torsion bar is inserted into the frame, the two ends of the torsion bar are exposed from the frame, and the torsion bar is located on the forward center line of the frame; a torsion arm, one end of which is connected to the exposed end of the torsion bar; A sliding seat, the sliding seat is connected to the vehicle body, and a slider is horizontally slidably connected in the sliding seat; A connecting arm, two ends of which are rotatably connected to the slider and the torsion arm respectively.

6. The meter-gauge powered single-axle bogie according to claim 5, characterized in that: The torsion arm is arc-shaped, and its opening is upward.

7. The meter-gauge powered single-axle bogie according to claim 3, characterized in that: The vehicle further comprises a second suspension device for connecting to the vehicle frame, wherein the second suspension device comprises At least two transverse stops, the two transverse stops are respectively arranged at the upper end of the welded frame body and located on both sides of the axial direction of the wheelset; A lateral telescopic damper, one end of which is connected to the inner wall of the through slot, and the other end of which is connected to the vehicle frame; Four rubber-steel laminated springs are respectively disposed at four corners of the upper end of the frame and are used to transmit vertical force and part of the deflection force.

8. The meter-gauge powered single-axle bogie according to claim 1, characterized in that: The power assembly comprises: A traction motor, wherein the traction motor is connected to the frame via a motor suspension rod, and elastic rubber joints are respectively provided at both ends of the motor suspension rod; A gearbox assembly, two ends of which are respectively connected to the wheelset assembly and the traction motor.

9. The meter-gauge powered single-axle bogie according to claim 1, characterized in that: A third rail current collector is arranged at the lower end of the frame.

10. A rail engineering vehicle, characterized in that: include: A meter-gauge powered single-axle bogie according to any one of claims 1 to 9.

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