CN213974219U

CN213974219U - Multi-swing-arm multi-suspension type crawler travel mechanism

Info

Publication number: CN213974219U
Application number: CN202023328927.8U
Authority: CN
Inventors: 张豫南; 房远; 尚颖辉; 刘艳华; 周野; 闫猛飞; 董政
Original assignee: Academy of Armored Forces of PLA
Current assignee: Academy of Armored Forces of PLA
Priority date: 2020-12-31
Filing date: 2020-12-31
Publication date: 2021-08-17
Anticipated expiration: 2030-12-31

Abstract

The utility model discloses a many swing arms many suspension type crawler travel mechanism. Two swing arm suspension members are arranged side by side on one side of the frame. The swing arm suspension member comprises two swing arms arranged outside two sides of the crawler belt, the upper ends of the two swing arms are fixedly connected through an upper end shaft, one end of an elastic damping connecting piece is rotatably arranged on the upper end shaft, the other end of the elastic damping connecting piece is rotatably arranged on a connecting shaft, the connecting shaft is fixed with a positioning shaft through a spring support, the inner end of the positioning shaft extending out of the spring support is fixed on the frame, and the elastic damping connecting piece inclines upwards along the backward direction. The middle parts of the two swing arms are rotatably arranged on the intermediate shaft, the inner end of the intermediate shaft extending out of the swing arms is fixed on the frame, and the intermediate shaft is rotatably provided with a plurality of supporting belt wheels. The lower ends of the two swing arms are fixedly connected through a lower end shaft, and a load bearing wheel assembly is rotatably arranged on the lower end shaft. The utility model discloses when guaranteeing good shock attenuation, the performance of hindering more, can effectively reduce the structure complexity, convenient maintenance and maintenance.

Description

Multi-swing-arm multi-suspension type crawler travel mechanism

Technical Field

The utility model relates to a many suspension type crawler travel mechanism of many swing arms for tracked vehicle belongs to tracked vehicle running gear technical field.

Background

Tracked vehicles can be classified as military tracked vehicles and engineering (civil) tracked vehicles according to whether they are military or not. The existing track walking mechanism of the military tracked vehicle has excellent shock absorption and obstacle crossing performance, but has large number of parts, complex composition structure and difficult and complicated maintenance. The structural complexity of a crawler traveling mechanism of the engineering crawler vehicle is much lower than that of a military crawler vehicle, but the damping and obstacle crossing capabilities of the crawler traveling mechanism are poor. Therefore, the existing crawler traveling mechanisms of military tracked vehicles and engineering tracked vehicles have some defects, and how to integrate the advantages of the military tracked vehicles and the engineering tracked vehicles is a problem which needs to be solved urgently at present.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a many suspension type track running gear of many swing arms, it is when guaranteeing good shock attenuation, the performance of surmounting, can effectively reduce the structure complexity, convenient maintenance and maintenance.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a many suspension type crawler travel of many swing arms which characterized in that: it includes swing arm suspension member, and two swing arm suspension members are installed side by side to one side of frame, wherein: the swing arm suspension member comprises two swing arms arranged outside two sides of the crawler belt, the upper ends of the two swing arms are fixedly connected through an upper end shaft, one end of an elastic damping connecting piece is rotatably arranged on the upper end shaft, the other end of the elastic damping connecting piece is rotatably arranged on a connecting shaft, the connecting shaft is fixed with a positioning shaft through a spring support, the inner end of the positioning shaft extending out of the spring support is fixed on the frame, and the elastic damping connecting piece is arranged in an upward inclined mode along the retreating direction from one end of the elastic damping connecting piece connected with the upper end shaft; the middle parts of the two swing arms are rotatably arranged on a middle shaft, the inner end of the middle shaft extending out of the swing arms is fixed on the frame, and a plurality of supporting belt wheels used for contacting with the inner surface of the crawler belt rotating to the upper part are rotatably arranged on the middle shaft; the lower ends of the two swing arms are fixedly connected through a lower end shaft, and a loading wheel assembly which is used for contacting with the inner surface of a track rotating to the lower side is rotatably arranged on the lower end shaft; the swing arm is the V form of lying down, and the opening of V form swing arm is towards advancing direction and is the obtuse angle, and when the swing arm rotated under the elastic force effect of elastic damping connecting piece, lower end axle and spring support were located the place ahead of jackshaft respectively all the time, the rear.

The utility model has the advantages that:

the utility model overcomes have for military use tracked vehicle and engineering tracked vehicle's crawler travel mechanism not enough that exists separately, when guaranteeing good shock attenuation, hinder the performance more, can effectively reduce the structure complexity, convenient maintenance and maintenance.

Drawings

Fig. 1 is a schematic structural view of the multi-swing-arm multi-suspension type crawler traveling mechanism of the present invention.

Fig. 2 is a perspective view of fig. 1 (track and frame not shown).

Fig. 3 is another perspective view of fig. 1 (showing the track and frame).

Fig. 4 is a schematic diagram of the installation positions of the positioning assembly and the limiting plate on the swing arm.

Fig. 5 is an explanatory view of installation of the positioning member.

Fig. 6 is an explanatory view showing that the stopper plate restricts the rotation of the bogie assembly.

Fig. 7 is an explanatory diagram of the limiting plate limiting the rotation of the swing arm.

Detailed Description

As shown in fig. 1 to 7, the utility model discloses many suspension type crawler travel of many swing arms includes swing arm suspension member, and two swing arm suspension members are installed side by side around one side edge advancing direction of frame 1, wherein: the swing arm suspension member comprises two swing arms 6 arranged outside two sides of the track 9, a track 9 is arranged on each side of the frame 1, the two swing arms 6 are arranged side by side along the advancing direction or the retreating direction, the swing arms 6 rotate in a vertical plane (as shown in figure 3), the upper ends of the two swing arms 6 are fixedly connected through an upper end shaft 12, the upper end shaft 12 is non-rotatable on the swing arms 6, one end of an elastic damping connecting piece 8 is rotatably arranged on the upper end shaft 12, the other end of the elastic damping connecting piece 8 is rotatably arranged on a connecting shaft 13, the connecting shaft 13 is fixed with a positioning shaft 20 through a spring support 3, the inner end of the positioning shaft 20 extending out of the spring support 3 is fixed on the frame 1, the connecting shaft 13, the spring support 3 and the positioning shaft 20 are fixed relative to the frame 1, the elastic damping connecting piece 8 is upwards inclined along the retreating direction from the end connected with the upper end shaft 12, i.e., the coupling shaft 13 is located higher than the upper end shaft 12; the middle parts of the two swing arms 6 are rotatably arranged on an intermediate shaft 11, the inner ends of the intermediate shaft 11 extending out of the swing arms 6 are fixed on the frame 1, and a plurality of supporting belt wheels 7 which are used for contacting with the inner surface of a crawler belt 9 rotating to the upper part are rotatably arranged on the intermediate shaft 11; the lower ends of the two swing arms 6 are fixedly connected through a lower end shaft 10, the lower end shaft 10 is non-rotatable on the swing arms 6, and the lower end shaft 10 is rotatably provided with a bogie wheel assembly 5 which is used for contacting with the inner surface of a track 9 which rotates to the lower side; the swing arm 6 is a V-shaped that lies down, and the opening of V-shaped swing arm 6 is towards the direction of travel and is the obtuse angle, and when swing arm 6 rotated under the elastic force effect of elastic damping connecting piece 8, lower end axle 10 was located the place ahead, the rear of jackshaft 11 respectively all the time with spring support 3.

As shown in fig. 1 to 3, a tensioning mechanism 2 is disposed in front of the swing arm suspension member, the tensioning mechanism 2 includes a frame 23 fixed on the vehicle frame 1, a tensioning shaft 24 is slidably mounted in the frame 23, a tensioning wheel 21 is rotatably mounted on the tensioning shaft 24, and when the tensioning shaft 24 slides to a desired tensioning position, the tensioning shaft 24 and the tensioning wheel 21 thereon are adjusted and positioned in the tensioning position by a tensioning rod 22 (rotating the tensioning rod 22) mounted on the frame 23, that is, tensioning or loosening of the track 9 is completed.

As shown in fig. 1 to 3, a driving wheel 4 is disposed behind the swing arm suspension member, the rotatable driving wheel 4 is fixedly connected to the frame 1 through a speed reducer, and the driving wheel 4 is rotatable but fixed relative to the frame 1.

As shown in fig. 1, the crawler belt 9 is disposed around the tension pulley 21, the idler pulley 7, the drive pulley 4, and the bogie wheel assembly 5.

In the present invention, the tensioning mechanism 2, the driving wheel 4 and the speed reducer connected thereto are already known in the art, and therefore, detailed description thereof is omitted.

As shown in fig. 2 and 3, the bogie wheel assembly 5 includes two triangular support frames 17, the support frame 17 is disposed between the two swing arms 6, the support frame 17 is disposed adjacent to the swing arms 6, the top end of each support frame 17 is rotatably mounted on the lower end shaft 10, a bogie axle 18 is fixedly mounted between the lower ends of the two support frames 17, fig. 1 to 3 illustrate a case where two bogie axles 18 are horizontally mounted between the two support frames 17 side by side, a plurality of bogie wheels 51 are rotatably mounted on the bogie axle 18, and the bogie wheels 51 are used for applying pressure to the crawler 9.

Further, in actual design, the two bogies 51 of weight-wheel assembly 5 corresponding to the track teeth 19 of track 9 have a gap therebetween that allows the track teeth 19 to pass therethrough, or the width of the gap between the two bogies 51 corresponding to the track teeth 19 should be greater than the width of the track teeth 19, so that the track teeth 19 can freely pass through weight-wheel assembly 5, as will be understood with reference to fig. 1.

For a swing arm suspension member near the tensioning mechanism 2, an L-shaped limit plate 16 is fixedly mounted between the two swing arms 6, and the limit plate 16 is located below the intermediate shaft 11 and above the support frame 17, wherein the limit plate 16 is used for limiting the rotation angle of the support frame 17 when the support frame 17 rotates around the lower end shaft 10 in the traveling direction (as shown in fig. 6, a dotted circle in the figure shows the moment when the limit plate 16 contacts the support frame 17 and shows the maximum angle a that the support frame 17 can rotate under the limit of the limit plate 16), and for limiting the rotation angle of the swing arms 6 when the lower end of the swing arms 6 rotates around the intermediate shaft 11 in the traveling direction by means of the contact of the limit plate 16 and the frame 23 of the tensioning mechanism 2 (as shown in fig. 7, a dotted circle in the figure shows the moment when the limit plate 16 contacts the frame 23). As shown in fig. 6 and 7, an L-shaped stopper plate 16 is shown. Of course, the sectional shape of the stopper plate 16 is not limited to the L shape, and may be other shapes.

When the position of the bogie wheel assembly 5 pressed vertically against the crawler 9 is set as the initial position, the maximum angle a of the bogie wheel assembly 5 rotating from the initial position in the traveling direction should be 15 ° or more and 30 ° or less in consideration of the optimum traveling and obstacle crossing performance, and the limit plate 16 should be located in front of the line connecting the center points of the lower end shaft 10 and the intermediate shaft 11.

As shown in fig. 4 and 5, the lower end shaft 10 is fixed on the two swing arms 6 through a positioning assembly, wherein: the outer end of the lower end shaft 10 is provided with an upward positioning strip-shaped groove 101; the positioning assembly comprises a positioning sheet 14 and a positioning bolt 15; after the lower shaft 10 penetrates between the lower ends of the two swing arms 6, the positioning piece 14 is inserted downwards into the positioning strip-shaped groove 101 on the end portion of the swing arm 6, which is located outside and extends out of the lower shaft 10, and is fixed on the swing arm 6 by the positioning bolt 15 in cooperation with a positioning nut (not shown in the figure), so as to fix the lower shaft 10 on the swing arm 6.

For a swing arm suspension member near the tensioning mechanism 2, a gap for accommodating the tensioning rod 22 is formed between the two idler wheels 7 corresponding to the tensioning rod 22 of the tensioning mechanism 2 on the intermediate shaft 11, or the width of the gap between the two idler wheels 7 corresponding to the tensioning rod 22 is larger than the outer diameter of the tensioning rod 22, so that the tensioning rod 22 can freely extend into the gap between the two idler wheels 7 to facilitate tensioning adjustment.

For another swing arm suspension member close to the drive pulley 4, each idler pulley 7 on the intermediate shaft 11 is not in contact with the drive pulley 4 and all idler pulleys 7 are located between two drive gear teeth 41 of the drive pulley 4.

Setting the central point of the horizontal side projection of the connecting shaft 13 as A, the central point of the horizontal side projection of the upper end shaft 12 as B, the central point of the horizontal side projection of the middle shaft 11 as C, the central point of the horizontal side projection of the lower end shaft 10 as D, establishing a rectangular coordinate system in a vertical projection plane, setting the coordinates of A, B, C, D points as A (Ax, Ay), B (Bx, By), C (Cx, Cy), D (Dx, Dy), setting the load to be borne By the multi-swing-arm multi-suspension type crawler travel mechanism of the present invention as G (unit N), the number of swing arms 6 as N, the elastic force of the elastic damping connecting member 8 as F (unit N) and the minimum length when the elastic damping connecting member is compressed to be incompressible as L (unit m), and determining the stress F of the elastic damping connecting member 8 based on the following formula 1 at any time in the normal operation of the multi-swing-arm multi-suspension type crawler travel mechanism of the present invention, based on specific structural design, model selection and evaluation of the elastic damping connecting piece 8 and other parts, the position relationship among the swing arm 6, the elastic damping connecting piece 8 and the spring support 3 is determined based on the minimum length L of the elastic damping connecting piece 8 determined by the following formula 2), so that in the process that the swing arm 6 rotates under the elastic force action of the elastic damping connecting piece 8, the lower end shaft 10 and the spring support 3 are always positioned in front of and behind the intermediate shaft 11 respectively, the swing arm 6 is prevented from being excessively reversed and inverted, and the use safety is ensured:

in practical design, the rotating surface of the carrier roller 7 can be wrapped with a film layer made of softer material such as rubber or polyurethane, so as to ensure that the carrier roller 7 can contact with the crawler 9 and generate lifting supporting force at any time when the crawler 9 is loose or tight.

In the present invention, the elastic damping connecting member 8, the crawler belt 9, etc. are well-known components in the art, and thus, will not be described in detail herein.

Fig. 1 shows the traveling direction (or forward traveling direction) and the backward traveling direction of the crawler travel mechanism of the present invention. The utility model discloses in, along the direction of travel definition the utility model discloses crawler travel mechanism's preceding (preceding, the place ahead etc.) and back (at the back, rear etc.), like figure 1, show in the figure the utility model discloses crawler travel mechanism's the left side is preceding, and the right is the back. For the components on the crawler traveling mechanism of the present invention, the inner end, the inner side, etc. are defined toward the inner end, one side, etc. of the frame 1, and the outer end, the outer side, etc. are defined toward the outer end, one side, etc. of the frame 1, on the contrary, respectively, in other words, the inner end, the outer side, etc. are defined toward the outer side of the frame 1, on the contrary, the outer end, etc. are defined toward the outer side of the vehicle.

Tracked vehicle borrows by the utility model discloses crawler travel mechanism is advancing or the in-process that moves back, when meetting the barrier (like stone, ladder etc.), bogie wheel subassembly 5 rotates around lower dead axle 10, and swing arm 6 rotates around jackshaft 11 simultaneously, and elastic damping connecting piece 8 changes its compression length and its both ends rotate around coupling axle 13, upper end 12 to cross the barrier smoothly. The rotating designs effectively avoid the situation that the bogie wheels 51 are separated from the ground, such as suspension, and the like, so that the tracked vehicle can smoothly and stably cross obstacles, the adaptability to different driving roads and driving environments is enhanced, and the driving smoothness is good.

The utility model has the advantages of as follows:

1. the utility model discloses in, the position design that straining device's tensioning rod did not have the position of sheltering from has left necessary space for operating the tensioning rod to be convenient for carry out the tensioning and adjust the operation.

2. The utility model discloses in, the design of a plurality of bogie wheels of bogie wheel subassembly makes tracked vehicle's pressure evenly distributed as far as possible on the track to reduce the vibration and the wearing and tearing of track.

3. The utility model discloses in, the design of a plurality of support band wheels can realize being favorable to reducing the swing, the vibration and the noise reduction of track to the even support of track.

4. The utility model discloses in, the elastic force of elastic damping connecting piece is favorable to the swing arm to rotate the back and resets rapidly, and the damping force of elastic damping connecting piece is favorable to the dissipation of swing arm vibration energy to the conduction of vibration to the frame has been reduced. In practice, the elastic force and the damping force of the elastic damping connecting piece can be adjusted, and the elastic damping connecting piece can be adaptively adjusted according to the requirements of loads and working environments during working.

5. For the design that the supporting belt wheel on the intermediate shaft of the swing arm suspension member close to the driving wheel is positioned between two driving wheel teeth of the driving wheel, the self structural space of the driving wheel is fully utilized, and the design provides greater flexibility for selection of materials, types and the like of the supporting belt wheel, so that the optimal belt supporting effect can be pursued. For example, when an inflatable pneumatic tire wheel is selected as the carrier wheel according to requirements, the pneumatic tire wheel is in an unfilled concave-flat state in the installation process, so that the pneumatic tire wheel can be smoothly installed on the intermediate shaft and is positioned on the inner side of the driving wheel teeth, after the pneumatic tire wheel is installed, the pneumatic tire wheel can be put into use after being filled with air, and the pneumatic tire wheel filled with air is equivalent to an air elastic damper and can play an effective supporting and damping role on the crawler belt.

6. The utility model provides a locating component plays limiting displacement on the one hand, restricted the rotation of lower extreme axle, avoided lower extreme axle and rather than the spare part of contact to take place wearing and tearing and noise, on the other hand, restricted lower extreme axle along axial removal for lower extreme axle becomes a relatively fixed whole with the swing arm, on the one hand again, locating component's use is convenient for directly take out lower extreme axle from the vehicle outside and dismantles, easy operation is convenient, and simultaneously, locating component's use has retrencied the quantity of spare part greatly.

7. The utility model discloses in, the mode that spring damping connecting piece was connected by the spring support with the location axle of installing on the frame has replaced the direct traditional mode of fixing through coupling axle (being equivalent to minor diameter cantilever beam) and frame, has greatly strengthened the intensity of spring damping connecting piece in work.

8. The utility model provides a limiting plate's design has effectively restricted the displacement or the turned angle of swing arm, bogie wheel subassembly, has avoided bogie wheel and take-up pulley to take place the friction, has avoided the excessive upset of bogie wheel subassembly and has reversed, has played the effect of strengthening rib to the swing arm simultaneously.

The above description is the preferred embodiment of the present invention and the technical principle applied by the preferred embodiment, and for those skilled in the art, without departing from the spirit and scope of the present invention, any obvious changes based on the equivalent transformation, simple replacement, etc. of the technical solution of the present invention all belong to the protection scope of the present invention.

Claims

1. The utility model provides a many suspension type crawler travel of many swing arms which characterized in that: it includes swing arm suspension member, and two swing arm suspension members are installed side by side to one side of frame, wherein: the swing arm suspension member comprises two swing arms arranged outside two sides of the crawler belt, the upper ends of the two swing arms are fixedly connected through an upper end shaft, one end of an elastic damping connecting piece is rotatably arranged on the upper end shaft, the other end of the elastic damping connecting piece is rotatably arranged on a connecting shaft, the connecting shaft is fixed with a positioning shaft through a spring support, the inner end of the positioning shaft extending out of the spring support is fixed on the frame, and the elastic damping connecting piece is arranged in an upward inclined mode along the retreating direction from one end of the elastic damping connecting piece connected with the upper end shaft; the middle parts of the two swing arms are rotatably arranged on a middle shaft, the inner end of the middle shaft extending out of the swing arms is fixed on the frame, and a plurality of supporting belt wheels used for contacting with the inner surface of the crawler belt rotating to the upper part are rotatably arranged on the middle shaft; the lower ends of the two swing arms are fixedly connected through a lower end shaft, and a loading wheel assembly which is used for contacting with the inner surface of a track rotating to the lower side is rotatably arranged on the lower end shaft; the swing arm is the V form of lying down, and the opening of V form swing arm is towards advancing direction and is the obtuse angle, and when the swing arm rotated under the elastic force effect of elastic damping connecting piece, lower end axle and spring support were located the place ahead of jackshaft respectively all the time, the rear.

2. The multi-swing arm multi-suspension crawler travel mechanism of claim 1, wherein:

a tensioning mechanism is arranged in front of the swing arm suspension member and comprises a frame fixed on the frame, a tensioning shaft is slidably arranged in the frame, a tensioning wheel is rotatably arranged on the tensioning shaft, and the tensioning shaft and the tensioning wheel on the tensioning shaft realize tensioning position adjustment and positioning by virtue of a tensioning rod arranged on the frame;

a driving wheel is arranged behind the swing arm suspension member, and the rotatable driving wheel is fixedly connected with the frame through a speed reducer;

the track is arranged around the tension wheel, the supporting belt wheel, the driving wheel and the loading wheel component.

3. The multi-swing arm multi-suspension crawler travel mechanism of claim 2, wherein:

the bogie wheel assembly comprises two triangular support frames, the support frames are located between the swing arms and are close to the swing arms, the top ends of the support frames are rotatably mounted on the lower end shafts, a bogie wheel shaft is fixedly mounted between the lower ends of the two support frames, and a plurality of bogie wheels are rotatably mounted on the bogie wheel shaft.

4. The multi-swing arm multi-suspension crawler travel mechanism of claim 3, wherein:

and a gap allowing the track teeth to pass through is formed between the two bogie wheels corresponding to the track teeth of the track on the weight-bearing wheel shaft of the weight-bearing wheel component.

5. The multi-swing arm multi-suspension crawler travel mechanism of claim 4, wherein:

for being close to straining device one the swing arm hangs the component, two fixed mounting has L form limiting plate between the swing arm, and the limiting plate is located the below of jackshaft, the top of support frame, wherein, the limiting plate is used for when the support frame is wound lower extreme axle restricts when rotating towards the direction of travel the turned angle of support frame to and be used for when the lower extreme of swing arm is wound the jackshaft is restricted when rotating towards the direction of travel by the limiting plate with straining device's the frame contact restricts the turned angle of swing arm.

6. The multi-swing arm multi-suspension crawler travel mechanism of claim 5, wherein:

the limiting plate is positioned in front of a connecting line of central points of the lower end shaft and the middle shaft.

7. The multi-swing-arm multi-suspension crawler travel mechanism according to any one of claims 1 to 6, wherein:

the lower end shaft is fixed on the two swing arms through a positioning assembly, wherein: the outer end of the lower end shaft is provided with an upward positioning strip-shaped groove; the positioning assembly comprises a positioning sheet and a positioning bolt; when the lower end shaft penetrates between the lower ends of the two swing arms, the positioning sheet is inserted downwards into the positioning strip-shaped groove on the end part of the swing arm, which extends outwards from the lower end shaft and is positioned outside, and is fixed on the swing arm by the positioning bolt.

8. The multi-swing-arm multi-suspension crawler travel mechanism according to any one of claims 2 to 6, wherein:

for a swing arm suspension member close to the tensioning mechanism, a gap for accommodating the tensioning rod is formed between two idler wheels corresponding to the tensioning rod of the tensioning mechanism on the intermediate shaft;

for another swing arm suspension member close to the driving wheel, each carrier roller on the intermediate shaft is not in contact with the driving wheel and all the carrier rollers are located between two driving wheel teeth of the driving wheel.

9. The multi-swing arm multi-suspension crawler travel mechanism of claim 1, wherein:

the rotating surface of the supporting belt wheel is wrapped with a film layer made of rubber or polyurethane.