CN105620191B - Track wheel device - Google Patents

Abstract

The invention discloses a track wheel device, which is a divisional application of Chinese patent application CN201410749683.0. The device includes a track, a hydraulic support frame and three support wheels; the track includes a rubber track, reinforcing ribs, iron teeth and a limit block. The second support wheel and the third support wheel are connected by a telescopic rod, and a spring is fixed between the second support wheel and the third support wheel, and the spring is set on the outside of the telescopic rod, and the conversion shaft is set on the hydraulic oil transmission hollow shaft On the top, the conversion shaft has bevel teeth, and the corner gear is connected with the first gear through the transmission shaft. The beneficial effect of the present invention is that: the hydraulic support frame includes a support hydraulic cylinder body and three hydraulic rods to form a circle. At the same time, the distance between the second support wheel and the third support wheel is stretched due to the spring reset, so that the running wheel becomes a triangular shape. The structure of this track has a large contact area and is suitable for driving in relatively muddy places.

Description

track wheel device

The original application number of this divisional application is 201410749683.0, the application date is December 10, 2014, and the invention name is "track wheel mechanism".

technical field

The invention relates to a crawler wheel device.

Background technique

The track wheel is a new type of running mechanism developed by combining the advantages of tires and track running mechanisms to better meet the demanding performance requirements of various modern vehicles for high passability and high mobility. The current track wheels are generally triangular track wheels. Wheels or long track wheels, the current types of track wheels do not have the characteristics of deformation or mutual conversion.

Contents of the invention

Aiming at the above-mentioned problems in the prior art, the present invention provides a crawler wheel device, which has a simple structure, can be deformed quickly, and is suitable for use in different terrains and occasions.

In order to achieve the above object, the technical solution adopted by the present invention is: a track wheel device includes: a track, a hydraulic support frame for supporting the track, and three support wheels;

The hydraulic support frame includes a supporting hydraulic cylinder block and three hydraulic rods installed on the supporting hydraulic cylinder block. The ends of the hydraulic rods are provided with arc gears meshing with the track, arc gears and three corners. The gear meshes with the track and forms a circle. The three support wheels are hinged through connecting rods. The second support wheel and the third support wheel are connected by telescopic rods, and the second support wheel and the third support wheel are also connected. A spring is fixed, and the spring is set on the outside of the telescopic rod; the track includes a rubber track, a reinforcing rib, iron teeth and a limit block. At least two limit blocks protruding along the length direction of the rubber track;

The inner center of the supporting hydraulic cylinder is provided with an inset bevel tooth;

The first gear and the second gear are connected through a chain drive;

The second gear is connected to the supporting hydraulic cylinder block of the hydraulic support frame through the hydraulic oil delivery hollow shaft, and the conversion shaft is sleeved on the hydraulic oil delivery hollow shaft, so that the conversion shaft can be hydraulically telescopic; the center of the second gear also has a recessed cone tooth;

One end of the conversion shaft has bevel teeth capable of intermeshing with the second gear and the sunken bevel teeth supporting the hydraulic cylinder block, and the corner gear is connected with the first gear through the transmission shaft.

As a further improvement, the outside of the outer driving device composed of the first gear, the second gear and the chain is also equipped with a limit rod.

As a further improvement, the supporting hydraulic cylinder body of the hydraulic support frame and the hydraulic oil delivery hollow shaft are connected by a rotating pair, and there is a rubber sealing ring inside.

There are three limit blocks on the iron teeth in the crawler track, and the middle limit block protrudes in the opposite direction to the two limit blocks on both sides. At the same time, all the iron teeth are arranged linearly along the length direction of the rubber track, that is, the last iron tooth The front end of a limit block protruding from the middle part of the front side is inserted into the concave part in the middle of the two backward protruding limit blocks on the rear side of the previous iron tooth.

The beneficial effects of the present invention are: the hydraulic support frame is composed of a supporting hydraulic cylinder body and three hydraulic rods installed on the supporting hydraulic cylinder body, and the ends of the hydraulic rods are equipped with circular-arc tooth pieces meshing with the internal teeth of the crawler belt. The arc tooth piece meshes with the three corner gears and the track to form a circle. The advantage of this circular track wheel structure is that it travels fast and is suitable for driving on dry roads. When the hydraulic support frame is contracted, the second support wheel and The third support wheel stretches the distance between the support wheels due to spring return, making the travel wheel form an obtuse triangle shape. This crawler structure has a large contact area and is suitable for driving in relatively muddy places, especially when encountering uneven ground. Or in the case of rocks, the lateral impact force is relatively large. Due to the strong support of the spring between the second support wheel and the third support wheel, the wheel has good shock absorption performance in lateral running, and the lateral vibration direction stress is reduced by 70%. The structure of the present invention is simple and does not require too many complicated clutch devices. The track wheel system and the circular wheel system of some deformed track wheels do not cooperate with each other. The present invention makes full use of the combination of the track wheel system and the circular wheel system , when the wheel is round, the support mechanism of the track wheel also participates in, and supports together to form a circular wheel structure, which simplifies the cumbersomeness of the entire wheel mechanism, and also saves the manufacturing cost. A certain thickness of rubber is added to both edges of the track to reinforce it. Ribs, and improve the structure of the iron teeth to a continuous type to enhance the mutual restraint between adjacent iron teeth, improve the overall rigidity of the rubber track, and ensure that the track is not deformed to the greatest extent when turning, and avoid the derailment of the track caused by the slippage of the iron teeth quality risk. On the other hand, the deformation of the centerline in the circumferential direction of the track is greatly reduced, and the longitudinal tensile force and lateral rigidity of the track are greatly enhanced, which is suitable for the deformation of the track wheel.

Description of drawings

Fig. 1 is the structural diagram of the outer wheel of the present invention.

Fig. 2 is a structural diagram of the main body of the present invention.

Fig. 3 is an exploded view of the main diagram of the present invention.

Fig. 4 is a structural diagram of a conversion shaft.

Fig. 5 is a structural diagram of a triangular wheel.

Fig. 6 is a state view of the support wheel when the wheel is circular.

Fig. 7 is a structural diagram of the present invention without crawlers.

Figure 8 is a schematic diagram of the split plane structure of the rubber track.

FIG. 9 is a schematic diagram of a vertical cross-sectional structure in FIG. 8 .

Among the figure: 1, crawler belt, 2, circular arc gear piece, 3, hydraulic support frame, 4, conversion shaft, 6, spring, 7, first support wheel, 8, second support wheel, 9, third support wheel, 10, the second gear, 11, the first gear, 12, the power transmission shaft, 13,, 14, the chain, 15, the limit rod, 16, the bevel tooth inset.

detailed description

The present invention will be further described below in conjunction with accompanying drawing.

As shown in Fig. 1 and Fig. 2, the present invention includes: a track 1, a hydraulic support frame 3 for supporting the track, a first support wheel 7, a second support wheel 8, and a third support wheel 9. The first support wheel Wheel 7, the second supporting wheel 8, and the third supporting wheel 9 are all rotatable corner gears.

The hydraulic support frame 3 consists of a supporting hydraulic cylinder block and three hydraulic rods installed on the supporting hydraulic cylinder block. The ends of the hydraulic rods are equipped with arc gears 2 meshing with the internal teeth of the crawler belt 1. The arc gears 2 and the first support wheel 7, the second support wheel 8, and the third support wheel 9 are all meshed with the track, and form a circle, the first support wheel 7 and the second support wheel 8 and the first support wheel 7 and the third support wheel The middle of the wheel 9 is hinged by a connecting rod, as shown in Figure 6, between the second support wheel 8 and the third support wheel 9 is connected by a telescopic rod, between the second support wheel 8 and the third support wheel 9 there is also a fixed Spring 6, spring 6 is sleeved on the outside of telescopic rod. As shown in Figures 8 and 9, the crawler 1 includes a rubber crawler 11, a reinforcing rib 12, iron teeth 13 and a limit block 14, and the rubber crawler 11 has a raised rubber reinforcing rib 12 on the edge of the width direction of the outer surface of the belt body. There are at least two limit blocks 14 protruding along the length direction of the rubber track 11 on the iron teeth 13; especially there are three limit blocks 14 on the iron teeth 13, wherein the limit block 14 in the middle and the two limit blocks 14 on both sides The protruding direction is opposite, and all the iron teeth 13 are arranged linearly along the length direction of the rubber track 11, that is, the front end of a limit block 14 protruding from the middle of the front side on the rear iron tooth 13 is inserted into the two rear sides of the previous iron tooth 13. The rear protrudes from the concave part in the middle of the limit block 14 . A certain thickness of rubber ribs is added to both edges of the track, and the structure of the iron teeth is improved to a continuous type to enhance the mutual restraint between adjacent iron teeth, improve the overall rigidity of the rubber track, and ensure that the track is not deformed to the greatest extent when turning. Avoid the quality risk of track derailment caused by iron tooth slippage. On the other hand, the deformation of the centerline in the circumferential direction of the track is greatly reduced, and the longitudinal tensile force and lateral rigidity of the track are greatly enhanced

The center of the inner side of the supporting hydraulic cylinder is provided with an inset bevel tooth 16;

The first gear 11 is connected to the second gear 10 through a chain 14;

The second gear 10 is connected to the supporting hydraulic cylinder block of the hydraulic support frame 3 through the hydraulic oil delivery hollow shaft 13, and the supporting hydraulic cylinder block of the hydraulic support frame 3 and the hydraulic oil delivery hollow shaft 13 are connected by a rotating pair, and there is a rubber The sealing ring prevents the leakage of hydraulic oil.

The conversion shaft 4 is sleeved on the hydraulic oil delivery hollow shaft 13, so that the conversion shaft 4 can hydraulically telescopically move; the center of the second gear 10 also has an inset bevel tooth; The bevel gear that meshes with the second gear 10 and the sunken bevel gear 16 that supports the hydraulic cylinder body, the corner gear 7 is connected with the first gear 11 through the transmission shaft 12;

A limiting rod 15 is also installed on the outside of the outer driving device composed of the first gear 11 , the second gear 10 and the chain 14 . The position of the external driving device is fixed without offset.

Due to the first supporting wheel 7, the second supporting wheel 8, the third supporting wheel 9, the circular arc tooth pieces 2 of the three hydraulic rods support the track 1 together, and the track 1 is in a tight state. Due to the effect of force, the second support The fixed spring 6 between the wheel 8 and the third supporting wheel 9 is in a compressed state. At this time, the caterpillar belt 1 is generally in a circular state. The conversion shaft 4 is connected with the engine and is the only power source for the movement of the entire wheel. The way to realize the conversion of motion is to control the motion conversion shaft 4 to move in the axial direction through the control system. When the motion conversion shaft 4 leans against the hydraulic support frame 3, the bevel gear of the motion conversion shaft 4 meshes with the recessed bevel gear 16 of the supporting hydraulic cylinder block, driving the hydraulic support frame 3 to rotate, so that the whole wheel-circular structure rotates quickly.

By shrinking and supporting the three hydraulic rods on the hydraulic cylinder block, the circular arc tooth piece 2 at the end of the hydraulic rod is no longer in contact with the crawler belt, and the crawler belt is in a loose state. Between the second support wheel 8 and the third support wheel 9 The fixed spring 6 resets quickly, so that the distance between the second support wheel 8 and the third support wheel 9 becomes larger, and the first support wheel 7, the second support wheel 8, and the third support wheel 9 present an isosceles obtuse triangle , as shown in Figure 5, the wheel wrapped by the entire track is in an isosceles obtuse triangle, and the wheel has a large ground area, especially when encountering uneven ground or stones, the lateral impact force is relatively large, because the second support wheel and the second support wheel The strong support of the springs between the three supporting wheels makes the wheels have good shock absorption performance in lateral running, and the lateral vibration is reduced by 70%. Push the conversion shaft 4 to move in the direction of the second gear 10 through the hydraulic control system, the conversion shaft 4 is no longer connected to the hydraulic support frame 3, the hydraulic support frame 3 is in a state of no power source, and the bevel teeth at the end of the conversion shaft 4 can be connected to the second gear. The indented bevel teeth of the second gear 10 mesh, drive the second gear 10 through the conversion shaft 4, and drive the first gear 11 to rotate through the chain 14, and the first gear 11 drives the rotation of the first support wheel 7 through the transmission shaft 12 , so as to realize the rotation of crawler belt 1.

Claims (3)

1. A crawler wheel device, characterized in that it includes: a crawler belt (1), a hydraulic support frame (3) for supporting the crawler belt, and three support wheels (7, 8, 9); the hydraulic support frame ( 3) It includes the supporting hydraulic cylinder block and three hydraulic rods installed on the supporting hydraulic cylinder block. The angle between two adjacent hydraulic rods is 120 degrees. The ends of the hydraulic rods are equipped with crawler belts (1). The arc gear (2), the arc gear (2) and the three support wheels (7, 8, 9) mesh with the track and form a circle, and the three support wheels (7, 8, 9) pass through the The rod is hinged, wherein the second support wheel (8) and the third support wheel (9) are connected by a telescopic rod, and a spring is fixed between the second support wheel (8) and the third support wheel (9) ( 6), the spring (6) is set on the outside of the telescopic rod; the track (1) includes a rubber track (11), a reinforcing rib (12), iron teeth (13) and a limit block (14), the rubber track (11 ) There are protruding rubber ribs (12) on the edge of the width direction of the outer surface of the belt body, and there are at least two limit blocks (14) protruding along the length direction of the rubber track (11) on the iron teeth (13). There is an inset bevel tooth (16) in the inner center of the cylinder body; the first gear (11) and the second gear (10) are connected by a chain (14); the second gear (10) and the hydraulic support frame (3) The supporting hydraulic cylinder block is connected through the hydraulic oil delivery hollow shaft (13), and the conversion shaft (4) is sleeved on the hydraulic oil delivery hollow shaft (13), so that the conversion shaft (4) can hydraulically telescopically move; the second gear (10) The center also has a sunken bevel tooth; both ends of the conversion shaft (4) have bevel teeth that can mesh with the second gear (10) and the sunken bevel gear (16) that supports the hydraulic cylinder block, and the first support wheel (7) Connect with the first gear (11) through the transmission shaft (12), and a limit rod is installed on the outer side of the outer drive device composed of the first gear (11), the second gear (10) and the chain (14) (15). 2. A track wheel mechanism according to claim 1, characterized in that the supporting hydraulic cylinder block of the hydraulic support frame (3) and the hydraulic oil delivery hollow shaft (13) are connected by a rotating pair, and there is a rubber sealing ring. 3. A crawler wheel device according to claim 1, characterized in that there are three limit blocks (14) on the iron teeth (13) in the track (1), wherein the middle limit block (14) and The two limit blocks (14) on both sides protrude in opposite directions, and all the iron teeth (13) are arranged linearly along the length direction of the rubber track (11), that is, the one protruding from the middle of the front side on the rear iron tooth (13) The front end of the stopper (14) is inserted into the concave part in the middle of two rearward protrusions of the stopper (14) on the upper rear side of the previous iron tooth (13).