CN106143662B - Caterpillar flexible gets over bank driving device - Google Patents

Abstract

The invention discloses a crawler track flexible surmounting driving device, which includes a bracket, a flexible track, a driving wheel, a tensioning wheel, a number of support wheels and a number of drag wheels, and the number of support wheels is divided into multiple sets of wheels with two as a group. The two supporting wheels of each group of wheels are installed on a swinging wheel frame, and the axes of the two supporting wheels are parallel and located in a plane relatively fixed to the swinging wheel frame, and each swinging wheel frame is hinged on the bracket And can swing around the hinge axis to change the inclination angle of the plane; each set of wheels corresponds to a towing wheel, and each towing wheel is slidably installed on the bracket and can slide to the inside or outside of the bracket. A linkage assembly is arranged between the wheels, and the linkage assembly drives the dragging wheel to slide inside the bracket when the inclination angle of the plane increases, and drives the dragging wheel to slide outside the bracket when the inclination angle of the plane decreases. The crawler flexible over-hurdle driving device has the advantages of simple structure, good passing performance, strong terrain adaptability and the like.

Description

Crawler Flexible Riding Drive Device

technical field

The invention relates to the technical field of crawler belt walking equipment, in particular to a crawler belt flexible over-hurdle driving device.

Background technique

Flexible track has great application development in the fields of personnel transportation, snow cleaning, disaster relief and material transportation in snowy land, desert, forest, swamp and tidal flat area. It is characterized by small mass and low grounding specific pressure. . The tracked bumper vehicle can better pass through complex terrain areas such as snow, swamps, hills, and slopes.

At present, there are no relatively mature results in the study of flexible crawlers in China. The existing tracked vehicles have poor stability and passability when passing through uneven roads and ridges.

Contents of the invention

The technical problem to be solved by the present invention is to overcome the deficiencies in the prior art and provide a crawler belt flexible over-hurdle drive device with simple structure, good passing performance and strong terrain adaptability.

In order to solve the problems of the technologies described above, the present invention adopts the following technical solutions:

A crawler track flexible ridge-crossing driving device, including a bracket, a flexible crawler track, a driving wheel, a tension wheel, a plurality of supporting wheels and a plurality of drag wheels, and the flexible track is wound around the driving wheel, the tensioning wheel, a plurality of supporting wheels and On several towing wheels, several rollers are divided into multiple sets of wheels in groups of two. The two rollers of each wheel group are installed on a swing wheel frame, and the axes of the two rollers are parallel and parallel. Located in a plane relatively fixed to the oscillating wheel frame, each oscillating wheel frame is hinged on the bracket and can swing around the hinge axis to change the inclination angle of the plane; each set of wheels corresponds to a drag pulley, and each drag pulley is slidably installed on the on the bracket and can slide to the inside or outside of the bracket, and there is a linkage assembly between the swing wheel frame of each wheel group and the corresponding drag pulley, and the linkage assembly drives the drag pulley to the inside of the bracket when the inclination angle of the plane increases. Sliding, when the inclination angle of the plane decreases, the dragging wheel is driven to slide to the outside of the bracket.

In the above-mentioned crawler belt flexible ridge-crossing drive device, preferably, the linkage assembly includes a special-shaped plate fixed to the swing wheel frame and a sliding bar slid on the bracket in the vertical direction, and the dragging wheel is installed on the sliding bar The upper end of the special-shaped plate is against the lower end of the slide bar and supports the slide bar, and the special-shaped plate pushes the slide bar to slide up and down when the swing wheel frame swings.

In the above-mentioned crawler belt flexible over-hill driving device, preferably, the sliding rod includes a first support rod and a second support rod that are slidably socketed to each other, and there is a device between the first support rod and the second support rod so that both Elastic buffer mechanisms that are far away from each other, the drag pulley is installed on the first support rod, and the floating wheel that is against the special-shaped plate is installed on the second support rod.

In the above-mentioned crawler belt flexible jump-over driving device, preferably, the second support rod is fixedly connected to an outer sleeve, the first support rod is fixedly connected to a slider slidably arranged in the outer sleeve, and the elastic The buffer mechanism includes a telescopic spring installed in the outer sleeve, and the two ends of the telescopic spring respectively abut against the bottom of the outer sleeve and the slider.

In the above-mentioned crawler belt flexible jump-over driving device, preferably, a sliding sleeve is fixedly connected to the bracket, and the outer sleeve is slidably arranged in the sliding sleeve.

In the above-mentioned crawler belt flexible overhill driving device, preferably, the sliding sleeves corresponding to all linkage components are connected and fixed by a reinforcing rod.

In the above-mentioned crawler track flexible overhill driving device, preferably, the swing wheel frame is a fork-shaped component with two mounting arms, and the two supporting wheels are respectively mounted on the two mounting arms.

In the above-mentioned crawler track flexible overhill driving device, preferably, the number of the wheel sets is the same as the number of the drag wheels.

In the above-mentioned crawler track flexible overhill driving device, preferably, the number of the wheel sets is three, and the number of the drag wheels is three.

Compared with the prior art, the present invention has the advantages that: in the present invention, the crawler track flexible surmounting drive device installs the two rollers of each set of wheels on the bracket through the swing wheel frame, and when driving on a horizontal road, all The axes of the supporting rollers are all located in the same horizontal plane, and the entire driving device runs smoothly. When driving on uneven roads or needing to cross ridges, under the reaction force of the ground, the two rollers of each set of wheels can self-adaptively swing with the swing wheel frame, so that the plane L where the axes of the two rollers are located is inclined, and also That is to say, the two supporting rollers will make the flexible crawler follow the terrain to produce inclined lift, so that it can pass smoothly and smoothly, and its terrain adaptability and driving ability are better. At the same time, each set of wheels is correspondingly connected to a dragging wheel through the linkage assembly, and the linkage assembly controls the corresponding dragging wheel to slide toward the inside or outside of the bracket 1 according to the inclination angle of the plane L, that is, controls the upper flexible track of the driving device to expand or expand outwards accordingly. Folding inward can compensate for the change in the tightness of the flexible track caused by the swing of the rollers, so that the tightness of the flexible track remains basically unchanged, thereby avoiding various problems caused by a large change in the tightness of the flexible track.

Description of drawings

Fig. 1 is a schematic front view structural diagram of a crawler belt flexible over-hurdle driving device.

Fig. 2 is a side sectional structural schematic diagram of the crawler belt flexible over-hurdle driving device.

Fig. 3 is a structural schematic diagram of two supporting wheels of a single wheel set installed on a swinging wheel frame.

Fig. 4 is a structural schematic diagram of the cooperation between the sliding rod and the sliding sleeve.

Fig. 5 is a structural schematic diagram of the crawler track flexible overhill driving device when overhill.

illustration:

1. Bracket; 11. Sliding sleeve; 12. Reinforcing rod; 2. Flexible track; 3. Driving wheel; 4. Tensioning wheel; Arm; 8, linkage assembly; 81, special-shaped plate; 82, sliding rod; 821, first rod; 8211, slider; 822, second rod; 8221, outer sleeve; 83, floating wheel; 84, telescopic spring.

Detailed ways

The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

As shown in Figures 1 to 5, the crawler belt flexible over-the-ridge driving device of this embodiment includes a bracket 1, a flexible crawler belt 2, a driving wheel 3, a tensioning wheel 4, several supporting wheels 5 and a number of drag wheels 6, and the flexible crawler belt 2 is wound on the drive wheel 3, the tension wheel 4, several support wheels 5 and several drag wheels 6. Several supporting wheels 5 are divided into multiple sets of wheels, and the multiple sets of wheels are arranged sequentially along the direction of travel of the driving device. Each set of wheels has two supporting wheels 5, and the two supporting wheels 5 of each set of wheels are installed on On a swing wheel frame 7, and the axes of the two track wheels 5 are parallel and located in a plane L relatively fixed to the swing wheel frame 7 (this plane L is also the plane defined by the axes of the two track wheels 5) Each swing wheel frame 7 is hinged on the bracket 1 and can swing around the hinge axis to change the inclination angle of the plane L. By swinging the swing wheel frame 7, the above-mentioned plane L can be arranged horizontally or at a certain angle with the horizontal plane; The set of wheels corresponds to a towing wheel 6 respectively, and each towing wheel 6 is slidably installed on the support 1 and can slide to the inside or outside of the support 1. When the towing wheel 6 slides to the inside of the support 1, the flexible track 2 supported by it is retracted inward. , when the towing wheel 6 slides to the outside of the bracket 1, the flexible track 2 supported by it expands outward, and a linkage assembly 8 is provided between the swing wheel frame 7 of each wheel set and the corresponding towing wheel 6, and the linkage assembly 8 is in the above-mentioned When the inclination angle of the plane L increases, the dragging wheel 6 is driven to slide toward the inside of the bracket 1, and when the inclination angle of the above-mentioned plane L decreases, the dragging wheel 6 is driven to slide toward the outside of the bracket 1. When the plane L is arranged horizontally, the dragging wheel 6 moves toward the bracket 1. Slide outside to limit position.

In the crawler belt flexible surmounting driving device of this embodiment, the two supporting wheels 5 of each group of wheels are installed on the bracket 1 through the swinging wheel frame 7. When driving on a horizontal road, the axes of all supporting wheels 5 are located at In the same horizontal plane, the entire driving device runs smoothly. When driving on an uneven road or when it is necessary to cross a hurdle, the two supporting wheels 5 of each set of wheels can automatically swing with the swinging wheel frame 7 under the reaction force of the ground, so that the plane L where the axes of the two supporting wheels 5 are located Tilting, that is, the two supporting wheels 5 will cause the flexible crawler 2 to tilt and lift according to the terrain, so that it can pass smoothly and smoothly, and its terrain adaptability and driving ability are better. At the same time, each group of wheels is connected to a corresponding dragging wheel 6 through the linkage assembly 8, and the linkage assembly 8 controls the corresponding dragging wheel 6 to slide to the inside or outside of the support 1 according to the inclination angle of the plane L, that is, controls the upper flexible track 2 of the driving device. Corresponding outward expansion or inward retraction can compensate the change in the tightness of the flexible crawler 2 caused by the swing of the supporting roller 5, so that the tightness of the flexible crawler 2 remains basically unchanged, thereby avoiding the tightness of the flexible crawler 2 due to the change in the tightness of the flexible crawler 2. Various problems that arise when growing up.

In this embodiment, the linkage assembly 8 includes two special-shaped plates 81 fixedly connected to the swing wheel frame 7 and a slide bar 82 slid on the bracket 1 along the vertical direction. The drag pulley 6 is installed on the upper end of the slide bar 82. The two special-shaped plates 81 are all against the lower ends of the slide bars 82 and support the slide bars 82. Under the pressure of the upper flexible track 2 of the driving device, the lower ends of the slide bars 82 always keep in contact with the two special-shaped plates 81, and the special-shaped plates 81 swing accordingly. Promote slide bar 82 to slide up and down when wheel frame 7 swings. The special-shaped plate 81 is a plate with a symmetrical structure, which is equivalent to a cam. The distance between its outer peripheral surface and the axis of the oscillating wheel frame 7 is a tip. The distance of the axis of the frame 7 gradually decreases. When the plane L is arranged horizontally, the tip of the special-shaped plate 81 is in contact with the slide bar 82, so that the slide bar 82 slides to the upper limit position. Then slide down to the corresponding height.

Further, as shown in FIG. 4 , the sliding rod 82 includes a first strut 821 and a second strut 822 that are slidably socketed on each other, and there is a gap between the first strut 821 and the second strut 822 to keep them away from each other. The elastic buffer mechanism, the drag wheel 6 is installed on the first pole 821, and the second pole 822 is equipped with a floating wheel 83 against the special-shaped plate 81. The sliding rod 82 with an elastic buffer mechanism can expand and contract within a certain length range, can play a role of buffering and shock absorption, and can enhance the stability of the driving device.

The second pole 822 is fixedly connected with the outer sleeve 8221, the first pole 821 is fixedly connected with the slider 8211 slidingly arranged in the outer sleeve 8221, and the elastic buffer mechanism includes a telescopic spring 84 installed in the outer sleeve 8221. , the two ends of the telescopic spring 84 are against the bottom of the outer sleeve 8221 and the slider 8211 respectively. In this embodiment, a plurality of telescopic springs 84 with different cross-sectional areas are preferably installed in the outer sleeve 8221 sequentially from the inside to the outside.

The linkage assembly 8 adopted in this embodiment has a simple and compact structure, is easy to manufacture, and has good linkage performance.

In this embodiment, a sliding sleeve 11 is fixedly connected to each linkage assembly 8 on the bracket 1 , and the outer sleeve 8221 of each linkage assembly 8 is slidably disposed in the corresponding sliding sleeve 11 , and the sliding rod 82 has good sliding stability. Furthermore, a reinforcing rod 12 can also be used to connect and fix the sliding sleeves 11 corresponding to all the linkage components 8, which can increase the overall strength and running stability.

In this embodiment, the oscillating wheel frame 7 is a fork-shaped component with two mounting arms 71 , and the two rollers 5 are respectively installed on the two mounting arms 71 . The oscillating wheel frame 7 has a simple structure and a reasonable design.

In this embodiment, the number of wheel sets is the same as the number of towing wheels 6 , specifically, the number of wheel sets is three sets, and the number of towing wheels 6 is three. In other embodiments, the number of the wheel sets and the number of the drag wheels 6 can also be two or more.

The flexible crawler 2 of this embodiment adopts an integral rubber-metal crawler, and the crawler ring is formed by bolts connecting fasteners, rubber belts, arc-shaped pins, and rubber belt splints.

The above descriptions are only preferred implementations of the present invention, and the scope of protection of the present invention is not limited to the above examples. For those skilled in the art, improvements and transformations obtained without departing from the technical concept of the present invention should also be regarded as the protection scope of the present invention.

Claims (8)

1. A crawler track flexible surmounting driving device, including a bracket (1), a flexible track (2), a driving wheel (3), a tensioning wheel (4), several supporting wheels (5) and several drag wheels (6) , the flexible crawler belt (2) is wound on the drive wheel (3), the tension wheel (4), some support wheels (5) and some drag wheels (6), and it is characterized in that: several support wheels (5 ) is divided into multiple sets of wheels by two groups, and the two track wheels (5) of each set of wheels are installed on a swing wheel frame (7), and the axes of the two track wheels (5) are parallel And located in a plane relatively fixed with the swinging wheel frame (7), each swinging wheel frame (7) is hinged on the support (1) and can swing around the hinge axis to change the inclination angle of the plane; each group of wheels corresponds to A drag wheel (6), each drag wheel (6) is slidably installed on the bracket (1) and can slide to the inside or outside of the bracket (1), the swing wheel frame (7) of each wheel group and the corresponding drag wheel (6) ) is provided with a linkage assembly (8), the linkage assembly (8) drives the drag pulley (6) to slide inside the bracket (1) when the inclination angle of the plane increases, and when the inclination angle of the plane decreases Hours drive the drag pulley (6) to slide outside the support (1); the linkage assembly (8) includes a special-shaped plate (81) fixed to the swing wheel frame (7) and a vertically slidable frame on the support (1) on the sliding bar (82), the dragging wheel (6) is installed on the upper end of the sliding bar (82), and the special-shaped plate (81) is against the lower end of the sliding bar (82) and holds the Slide bar (82), described special-shaped plate (81) promotes slide bar (82) to slide up and down when swinging wheel frame (7) swings. 2. The crawler belt flexible over-the-hill drive device according to claim 1, characterized in that: the slide bar (82) includes a first support rod (821) and a second support rod (822) that are slidably socketed with each other, so that An elastic buffer mechanism is provided between the first pole (821) and the second pole (822) to keep the two away from each other, the dragging wheel (6) is installed on the first pole (821), and the A floating wheel (83) against the special-shaped plate (81) is installed on the second pole (822). 3. The drive device for flexible crawler over-surpass according to claim 2, characterized in that: the second support rod (822) is fixedly connected to an outer sleeve (8221), and the first support rod (821) is fixedly connected to There is a slider (8211) slidingly arranged in the outer sleeve (8221), the elastic buffer mechanism includes a telescopic spring (84) installed in the outer sleeve (8221), and the telescopic spring (84 ) against the bottom of the outer sleeve (8221) and the slider (8211) respectively. 4. The drive device for crawler belt flexible over-surpass according to claim 3, characterized in that: a sliding sleeve (11) is fixedly connected to the support (1), and the outer sleeve (8221) is slidably arranged on the sliding sleeve (11). set (11). 5. The drive device for flexible crawler overhill according to claim 4, characterized in that: the sliding sleeves (11) corresponding to all linkage components (8) are connected and fixed by a reinforcing rod (12). 6. According to any one of claims 1 to 5, the drive device for crawler belt flexible over-surmounting is characterized in that: the swing wheel frame (7) is a fork-shaped part with two mounting arms (71), and the two Each track roller (5) is installed on two mounting arms (71) respectively. 7. The crawler track flexible over-hill drive device according to any one of claims 1 to 5, characterized in that: the number of the wheel sets is the same as the number of the drag wheels (6). 8. The drive device for crawler belt flexible over-surpass according to claim 7, characterized in that: the number of the wheel sets is three, and the number of the drag wheels (6) is three.