CN1309608C - Magnetic suspension rail inspection vehicle chassis with guide wheel system - Google Patents

Abstract

A maglev track inspection vehicle chassis with a guide wheel system belonging to the field of rail transit engineering, comprising: a vehicle chassis, a vehicle drive axle, a gear differential, a half shaft, rubber tire wheels, rubber tire guide wheels, guide wheels shelf. Several vehicle drive axles are fixed in parallel on the undercarriage, with gear differentials and axle shafts in the middle and inside, rubber tire wheels at both ends, rubber tire guide wheels set on the axles at both ends of the guide wheel frame and can rotate freely , multiple groups of guide wheel frames are arranged symmetrically along the longitudinal direction of the vehicle chassis, and fixed on the lower parts of opposite sides of the vehicle chassis. The width of the guiding surface of the guide rail on opposite sides is used as lateral positioning support and guidance for the maglev track inspection vehicle to safely drive along the track beam on the maglev track beam. The invention has the advantages of simple and reasonable structure, smooth driving and good guiding performance, and low driving noise.

Description

Maglev track inspection vehicle chassis with guide wheel system

technical field

The invention relates to a chassis of a maglev rail inspection vehicle, in particular to a chassis of a maglev rail inspection vehicle with a guide wheel system. It belongs to the field of rail transit engineering.

Background technique

The railway vehicle chassis that is used for rail traffic at present, its walking part is driven by several railway moving wheel axles that axle gear boxes and wheelsets are housed, or known railway vehicle bogies, but all are only applicable to railway rail running, its A steel wheel suitable for the cross section of the rail is adopted and supported and guided by the shoulder of the wheel rim and the rail. Other forms of walking, supporting, and guiding systems, such as the wheel structure for rail-mounted cranes, loaders or roadway stackers, are also basically the same as the wheel structure of railway vehicles. The structure of the sleeper system of the maglev high-speed train is completely different from that of ordinary roads or rails. The special maglev track beam used as driving, supporting and guiding is a very wide monorail support form. The width reaches the width of the vehicle body. The top surface of the steel plate on both sides of the upper part of the beam and the two sides of the steel plate perpendicular to the top surface are used as the road surface for driving, safety support, and guide rails for guiding and guiding. Therefore, the problem of the wheel speed difference between the inner and outer wheels and the distance change of the guide rail guide surface between the guide wheels on both sides must be considered and solved.

After literature search, it is found that Chinese patent number: 98236539.X, named: monorail high-speed train power trolley, the patent reads as "a monorail high-speed train power trolley, mainly used for driving electric trains. It is characterized in that: gantry A deceleration device is installed on the frame, the output shaft of the deceleration device is connected with the driving wheel, the driving wheel is located on the top of the monorail, and guide wheels are respectively installed on both sides of the lower part of the gantry frame, and the distance between the rims of the guide wheels on both sides is just equal to The width of the monorail. It has the advantages of high speed, simplicity, and low cost.” Although the driving wheel of this utility model is located on the top of the monorail, and guide wheels are installed on both sides of the lower part, the distance between the rims of the guide wheels on both sides is just right. It is equal to the width of the monorail, so it can be guided along the monorail, but its running part cannot solve the problem of the wheel speed difference between the inner and outer wheels when driving along a wide monorail curved road, and the guide rail between several pairs of guide wheels on both sides. Due to the narrow track and rim of the guide wheels on both sides, the system structure is still only suitable for guiding on a narrow track, and cannot be used at a higher speed on the maglev track beam of a maglev high-speed train. Guided driving, so the scope of application of this type of technology is greatly limited.

Contents of the invention

The purpose of the present invention is to overcome the deficiencies in the prior art, to provide a maglev track inspection vehicle chassis with a guide wheel system, through which the drive axle structure with a differential gear drives the wheels to cooperate with the guide wheel systems on both sides, ensuring safety Support the maglev rail inspection vehicle and guide it to solve the problem of the wheel speed difference between the inner and outer wheels when driving along the curve, and eliminate the narrow distance between the rims of the guide wheels, which is just equal to the guide rails on the opposite sides The technical limitation of the surface width enables the running part to adapt to a very wide maglev track beam, meeting the requirements of two-way inspection and traction driving on it at a relatively high speed.

The present invention is realized through the following technical proposals, and the present invention includes: a vehicle underframe, a vehicle drive axle, a gear differential, a half shaft, a rubber tire wheel, a rubber tire guide wheel, and a guide wheel frame. The connection relationship is as follows: several vehicle drive axles without steering function are fixed on the vehicle chassis in parallel, the middle part of the vehicle drive axle is provided with a gear differential and a half shaft, and rubber tire wheels are arranged on the two output ports of each drive axle. The rubber tire guide wheels are arranged on the axles at both ends of the guide wheel frame and can rotate freely. The axis of the rubber tire guide wheels is perpendicular to the axis of the rubber tire wheels, and the rim of the rubber tire guide wheels is facing the maglev track beam. The upper side is also the guide surface. Multiple sets of guide wheel frames are arranged symmetrically along the longitudinal direction of the underframe, and are installed and fixed on the lower parts of the opposite sides of the underframe. The distance between the rims of the guide wheels on both sides is greater than that of the guide rail guide surfaces on the opposite sides. The width, with a certain gap, is used as lateral positioning support and guidance for the maglev track inspection vehicle to safely drive along the track beam on the maglev track beam.

The present invention can also include a guide safety wheel, the guide safety wheel is a steel wheel covered with non-metallic material on the rim, and its maximum outer diameter is smaller than the maximum outer diameter of the rubber tire guide wheel, as a safety backup for the rubber tire guide wheel, the guide The safety wheel and the rubber tire guide wheel are arranged in pairs on the same axle at the two ends of the guide wheel frame and can rotate freely. Even if the rubber tire guide wheel is damaged during driving, the existence of the guide safety wheel can still ensure the lateral positioning, safety support and driving guidance of the maglev track inspection vehicle.

The invention is used as the vehicle chassis of the maglev track inspection vehicle. During work, it is straddled on the maglev track beam with an I-shaped cross section. The surface rests on the upper rectangular side of the maglev track beam perpendicular to the top surface of the maglev track beam from the opposite two sides, that is, the guide surface. Clearance. After the maglev track inspection vehicle is started, the vehicle drive axle drives the rubber tire wheel to rotate, and the rubber tire guide wheel is driven to rotate, so the maglev track inspection vehicle drives safely along the track beam under the positioning and guidance of its chassis. , the gear differential in the drive axle automatically adjusts the running wheel speed difference of the rubber tire wheels on the left and right sides to prevent the rubber tire wheels from slipping, and the rubber tire guide wheels on the guide wheel frames on the left and right sides roll and rotate with the guide surface.

The present invention has substantive features and significant progress. Because the vehicle drive axle is provided with a gear differential, the driving wheels on both sides of the undercarriage can have a wheel speed difference between the inner and outer wheels when driving along a curve, and can adapt to many Wide magnetic levitation track beam; multiple sets of rubber tire guide wheel structure, as well as the gap between the wheel rim surface and the guide surface can ensure the adaptability to changes when driving on the track beam or along the curve of the track beam, which is very good for The maglev track inspection vehicle can safely drive for lateral positioning support and guidance, and will not cause excessive wear and tear on the guide wheels and tires due to too much guide friction, or even consume too much power of the vehicle; because the wheels and guide wheels are all rubber tires, its When rolling on the top surface of the steel plates on both sides of the upper part of the maglev track beam and the guide surfaces of the steel plates on both sides of the upper part perpendicular to the top surface, the adhesion friction is large, the tire wear is small, and the running noise is small; except for the rubber tire guide wheels, the present invention A guide safety wheel parallel to this wheel is also set up as a safety backup for the rubber tire guide wheel. Even if the rubber tire guide wheel is damaged during driving, the existence of the guide safety wheel can still ensure the lateral positioning and safety support of the maglev track inspection vehicle. and driving guidance, so as not to cause sudden vehicle overturning accidents. The invention has the advantages of simple and reasonable structure, smooth running and good guiding performance, and low running noise, and is suitable for the field of maglev rail traffic engineering as a vehicle chassis of a maglev rail inspection vehicle.

Description of drawings

Fig. 1 front view of structure of the present invention;

Figure 2 is a top view of the structure of the present invention;

Figure 3 is a side view of the structure of the present invention;

Fig. 4 A-A sectional view of the present invention.

Detailed ways

As shown in Fig. 1, Fig. 2, Fig. 3 and Fig. 4, the present invention comprises: undercarriage 1, vehicle driving axle 2, gear differential 3, axle shaft 4, rubber tire wheel 5, rubber tire guide wheel 6, The guide wheel frame 7 is connected in the following manner: several non-steering vehicle drive axles 2 are parallelly fixed on the undercarriage 1, and the middle part of the vehicle drive axle 2 is provided with a gear differential 3, and the gear differential 3 The two ends of each are connected to the half shaft 4, the rubber tire wheel 5 is arranged on the half shaft 4 at the two output ends of each vehicle drive axle 2, and the rubber tire guide wheel 6 is arranged on the wheel shaft at the two ends of the guide wheel frame 7 and can rotate freely. The axis of the tire guide wheel 6 is perpendicular to the axis of the rubber tire wheel 5, and the rim wheel surface of the rubber tire guide wheel 6 faces the upper side of the maglev track beam, that is, the guide surface, and the distance between the rims of the guide wheels 6 on both sides is greater than the opposite The width of the guide rail guide surfaces on both sides leaves a certain gap, and multiple groups of guide wheel frames 7 are symmetrically arranged longitudinally along the underframe 1, and are installed and fixed on the bottom of the opposite sides of the underframe 1.

The present invention may also include the guide safety wheel 8, the guide safety wheel 8 is a steel wheel covered with non-metallic material on the rim, and its maximum outer diameter is smaller than the maximum outer diameter of the rubber tire guide wheel 6, the guide safety wheel 8 and the rubber tire The guide wheels 6 are arranged in pairs on the same wheel shaft at the two ends of the guide wheel frame 7 and can also rotate freely.

Claims (3)

1. A chassis of a maglev track inspection vehicle with a guide wheel system, comprising: a vehicle chassis (1), a vehicle drive axle (2), a gear differential (3), a half shaft (4), rubber tire wheels (5) is characterized in that it also includes: rubber tire guide wheels (6), guide wheel frames (7), and its connection mode is: several vehicle drive axles (2) are fixed on the vehicle chassis (1) in parallel, The middle part of the vehicle drive axle (2) is provided with a gear differential (3), the two ends of the gear differential (3) are respectively connected to the axle shafts (4), and the rubber tire wheels (5) are arranged on each vehicle drive axle (2) On the half shafts (4) of the two output ends, the rubber tire guide wheels (6) are arranged on the wheel shafts at the two ends of the guide wheel frame (7) to rotate freely, and the axis of the rubber tire guide wheels (6) is aligned with the rubber tire wheels (5) ) axis is vertical, the rim wheel surface of the rubber tire guide wheel (6) faces the upper side of the maglev track beam, that is, the guide surface, and the distance between the rims of the guide wheels (6) on both sides is greater than that of the guide rail guide surface on the opposite sides Width, leaving gaps, multiple groups of guide wheel frames (7) are symmetrically arranged longitudinally along the underframe (1), and are fixedly arranged on the lower parts of the opposite sides of the underframe (1). 2. The chassis of the maglev track inspection vehicle with guide wheel system according to claim 1, is characterized in that, or also includes guide safety wheels (8), guide safety wheels (8) and rubber tire guide wheels (6) They are arranged in pairs on the same axle at the two ends of the guide wheel frame (7) to rotate freely. 3. The chassis of the maglev track inspection vehicle with guide wheel system according to claim 2, wherein the guide safety wheel (8) is a steel wheel covered with non-metallic material on the outside of the wheel rim, and its maximum outer diameter Less than the maximum outer diameter of the rubber tire guide wheel (6).