Lightweight HST power chassis special for hilly and mountainous areas

Abstract

The utility model discloses a lightweight HST power chassis special for hilly and mountainous areas, and relates to the technical field of agricultural machinery, and the scheme is that the lightweight HST power chassis special for the hilly and mountainous areas comprises a brake assembly, a power assembly and a power assembly, a chassis body; an engine, a clutch, a transfer case, an HST hydrostatic driving device and a driving rear axle are mounted on the chassis body, the engine is in transmission connection with the clutch, the clutch is in transmission connection with the transfer case, the transfer case is in transmission connection with the HST hydrostatic driving device, and the HST hydrostatic driving device is in transmission connection with the driving rear axle; the bearing base is mounted at the bottom end of the chassis body; the transmission assembly is mounted on the bearing base; the driving motor is mounted on the chassis body, and the driving motor is connected with the transmission assembly; auxiliary braking force can be applied to the vehicle, and the vehicle sliding phenomenon caused when the vehicle is parked on a large-gradient or wet and slippery road surface is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of agricultural machinery, in particular to a lightweight HST power chassis specially used for hilly and mountainous areas. Background Art

[0002] The terrain of hilly and mountainous areas is complex and changeable, with large undulations and steep slopes. The uneven road surface and soft soil often encounter various obstacles such as mud, potholes and stones. The HST system intelligently adjusts the displacement of the variable pump and variable motor according to key parameters such as the vehicle's driving speed and driving resistance. The HST system can accurately match the power output required under different operating conditions, ensuring efficient and stable operation in complex terrain such as hilly and mountainous areas. This not only improves the adaptability and operating efficiency of the machinery, but also significantly enhances the flexibility and safety of operation, allowing the crawler chassis to better meet the operating needs in the special environment of hilly and mountainous areas.

[0003] According to the authorization announcement number (CN210381933U), the hydrostatically driven crawler corn harvester disclosed includes a harvesting work assembly and a traveling chassis assembly, the traveling chassis assembly includes a crawler traveling system, a gearbox, an HST device, a steering cylinder and a frame, the steering cylinder is arranged on the gearbox, the gearbox is connected to the engine through the HST device, and the gearbox is connected to the crawler traveling system. The structure disclosed in the patent has defects in practical application, specifically as follows: the hilly and mountainous terrain has large undulations, the slope is usually steep, and the road surface is uneven, which causes the corn harvester to have a tendency to slide downward when parking, especially on a steep slope or slippery road surface, which is prone to slipping. Utility Model Content

[0004] The purpose of the utility model is to provide a lightweight HST power chassis specially designed for hilly and mountainous areas, which can propose a solution to the problem in the prior art that the vehicle is prone to slipping on roads with complex and changeable terrain, large terrain undulations and generally steep slopes, and can apply auxiliary braking force to the vehicle to prevent the vehicle from slipping when it is parked on a steep or slippery road.

[0005] The utility model is realized by the following technical solutions:

[0006] A lightweight HST power chassis specially used in hilly and mountainous areas comprises: a chassis body; a bearing base, which is mounted on the bottom end of the chassis body; a brake assembly, which can provide auxiliary braking force to the chassis body; a transmission assembly, which is mounted on the bearing base and can drive the brake assembly to move away from or close to the chassis body; and a drive motor, which is mounted on the chassis body and connected to the transmission assembly.

[0007] Furthermore, in the utility model, an engine, a clutch, a transfer case, an HST hydrostatic drive device and a drive rear axle are installed on the above-mentioned chassis body, the engine is transmission-connected to the clutch, the clutch is transmission-connected to the transfer case, the transfer case is transmission-connected to the HST hydrostatic drive device, and the HST hydrostatic drive device is transmission-connected to the drive rear axle.

[0008] Furthermore, in the utility model, the transmission assembly includes: a first transmission rod and a second transmission rod; a mounting opening adapted to the second transmission rod is opened on the bearing base, and at least one guide member is installed on the surface wall of the mounting opening; one end of the second transmission rod is connected to the brake assembly, and the other end of the second transmission rod is opened with a transmission groove, and the second transmission rod is opened with a guide groove, and the guide groove and the guide member are slidably matched; one end of the first transmission rod is connected to the driving motor, and the other end of the first transmission rod is threadedly matched with the transmission groove.

[0009] Furthermore, in the present invention, the brake assembly comprises a mounting base and a plurality of brake nails; one end of the second transmission rod is connected to the mounting base, and the plurality of brake nails are mounted on the mounting base.

[0010] Furthermore, in the utility model, the above also includes a spherical connecting member; a spherical groove with an opening is opened on the second transmission rod, the connecting member is located in the spherical groove, and the connecting member is connected to the mounting base.

[0011] Furthermore, in the utility model, a mounting frame is installed on the chassis body, and at least one first mounting groove is formed on the mounting frame, and a lighting assembly is installed in the first mounting groove.

[0012] Furthermore, in the utility model, the above also includes a limit assembly; the lighting assembly includes a storage bulb and a mounting plate, and the storage bulb is mounted on the mounting plate; the mounting plate is installed in a first mounting groove, and both sides of the mounting plate are slidably matched with the surface wall of the first mounting groove; wherein, in the lighting state, the limit assembly limits the storage bulb outside the first mounting groove; in the non-lighting state, the limit assembly limits the storage bulb inside the first mounting groove.

[0013] Furthermore, in the utility model, the above-mentioned limit assembly includes: a first limit groove, the first limit groove is arranged on the mounting frame, and the first limit groove is connected to the first mounting groove; a second limit groove, the second limit groove is arranged on the mounting frame, and the second limit groove is connected to the first mounting groove; a second mounting groove, the second mounting groove is arranged on the mounting plate; an elastic member, one end of the elastic member is connected to the surface wall of the second mounting groove, and the other end of the elastic member is connected to the limit member; wherein, in the lighting state, the limit member is inserted into the first limit groove, and the storage light bulb is limited outside the first mounting groove; in the non-lighting state, the limit member is inserted into the second limit groove, and the storage light bulb is limited inside the first mounting groove.

[0014] Furthermore, in the present invention, the top end of the above-mentioned limiting member is an arc structure.

[0015] Compared with the prior art, the utility model has the following advantages and beneficial effects:

[0016] When the chassis body is parked on a steep or slippery road, the drive motor controls the transmission assembly to move forward, and the transmission assembly drives the brake assembly to move toward the ground until the brake assembly acts on the ground to provide a large braking force for the chassis body, thereby preventing the chassis body from slipping; before the chassis body needs to travel, the drive motor controls the transmission assembly to move in the reverse direction, and the transmission assembly drives the brake assembly to move away from the ground until the brake assembly leaves the ground and stops at the bearing base, thereby preventing the brake assembly from being obstructed during the travel of the chassis body. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings described herein are used to provide a further understanding of the embodiments of the present utility model, constitute a part of this application, and do not constitute a limitation of the embodiments of the present utility model. In the drawings:

[0018] Figure 1 A three-dimensional diagram of a lightweight HST power chassis designed for hilly and mountainous areas;

[0019] Figure 2 It is a front view of a lightweight HST power chassis specially designed for hilly and mountainous areas;

[0020] Figure 3 is a longitudinal sectional view of the bearing base;

[0021] Figure 4 for Figure 3 The enlarged view of point A in the middle;

[0022] Figure 5 for Figure 3 The enlarged view of point B in the middle;

[0023] Figure 6 is a schematic diagram of the lighting assembly structure;

[0024] Figure 7 is a longitudinal sectional view of the mounting plate;

[0025] Figure 8 This is the schematic diagram of the HST hydrostatic drive.

[0026] Marks and corresponding parts names in the attached drawings:

[0027] 1-chassis body, 2-driving motor, 3-mounting frame, 4-first mounting slot, 5-first limiting slot, 6-second limiting slot, 7-driving wheel, 8-guide wheel, 9-sprocket wheel, 10-track, 11-bearing base, 12-mounting base, 13-brake nail, 14-first transmission rod, 15-second transmission rod, 16-guide slot, 17-guide member, 18-mounting port, 19-spherical slot, 20-connecting member, 2 1-mounting plate, 22-storage bulb, 23-second mounting slot, 24-elastic member, 25-limiting member, 26-engine, 27-clutch, 28-transfer case, 29-oil replenishment pump, 30-oil tank, 31-piston variable pump, 32-filter, 33-overflow valve, 34-swash plate adjustment mechanism, 35-check valve, 36-driving rear axle, 37-bidirectional hydraulic motor, 38-transmission assembly, 39-brake assembly. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solutions and advantages of the utility model more clearly understood, the utility model is further described in detail below in conjunction with embodiments and drawings. The schematic implementation manner of the utility model and its description are only used to explain the utility model and are not intended to limit the utility model.

[0029] The embodiment of the present application provides a lightweight HST power chassis specially used in hilly and mountainous areas. The hydrostatic drive system mainly includes: an engine, an HST, a drive rear axle, etc. The HST (hydrostatic drive) power chassis has the following characteristics: the hydraulic components are not strictly restricted by the spatial position and are flexible in layout; small size and large power-to-weight ratio; good low-speed performance and a wide speed regulation range, capable of achieving stepless speed regulation; easy to combine with electronic technology to achieve automated control, making it more suitable for operations in hilly and mountainous areas. The embodiment of the present application does not impose any special restrictions on the form of the above-mentioned electronic equipment. For the sake of convenience of explanation, the following embodiments are all exemplified using the HST power chassis as an example. Table 1 below is a comparison table of HST (hydrostatic drive) and other drive methods:

[0030] Table 1:

[0031] ;

[0032] Example

[0033] In some embodiments of this application, please refer to Figure 1 and Figure 2The bottom of the chassis body 1 is provided with a bearing base 11, and a driving motor 2 is installed on the chassis body 1. The driving motor 2 is connected to the transmission assembly 38, and the transmission assembly 38 is connected to the brake assembly 39. When the chassis body 1 is parked on a road with a large slope or a slippery road, the driving motor 2 controls the transmission assembly 38 to move forward, and the transmission assembly 38 drives the brake assembly 39 to move toward the ground until the brake assembly 39 acts on the ground to provide a large braking force for the chassis body 1, thereby avoiding the chassis body 1 from slipping; before the chassis body 1 needs to travel, the driving motor 2 controls the transmission assembly 38 to move in the reverse direction, and the transmission assembly 38 drives the brake assembly 39 to move away from the ground until the brake assembly 39 leaves the ground and parks at the bearing base 11, thereby avoiding the brake assembly 39 from being obstructed during the travel of the chassis body 1.

[0034] Among them, the above-mentioned chassis body 1 is equipped with an engine 26, a clutch 27, a transfer case 28, an HST hydrostatic drive device and a drive rear axle 36. The engine 26 provides power to drive the HST hydrostatic drive device through the speed increasing action of the clutch 27 and the transfer case 28, and the HST hydrostatic drive device drives the drive rear axle 36 to drive the overall movement.

[0035] For examples, please refer to Figure 8 The HST hydrostatic drive device includes an oil tank 30, a supplementary oil pump 29, a plunger variable pump 31, a filter 32, a swash plate adjustment mechanism 34, a relief valve 33, a check valve 35 and a bidirectional hydraulic motor 37. The engine 26 provides power to drive the plunger variable pump 31 to rotate under the action of the clutch 27 and the transfer case 28. The plunger variable pump 31 drives the bidirectional hydraulic motor 37 to rotate. The bidirectional hydraulic motor 37 is connected to the driving rear axle 36, thereby providing power to the driving rear axle 36. The swash plate adjustment mechanism 34 can adjust the flow and flow direction of the plunger variable pump 31, thereby changing the speed and direction of the bidirectional hydraulic motor 37, and then adjusting the driving speed and driving direction of the chassis body 1; the HST hydrostatic drive device includes a forward high-pressure relief system and a reverse high-pressure relief system. The high-pressure relief system is composed of a check valve 35 and a relief valve 33 to avoid the problem of excessive pressure in the HST hydrostatic system, which causes damage to the original parts.

[0036] For examples, please refer to Figure 1 and Figure 2 Guide wheels 8 are rotatably mounted on both sides of the front end of the chassis body 1, and drive wheels 7 are rotatably mounted on both sides of the rear end of the chassis body 1. The guide wheels 8 and the drive wheels 7 on the same side of the chassis body 1 are sleeved with tracks 10, and a plurality of sprocket wheels 9 are installed between the guide wheels 8 and the drive wheels 7 for tensioning the tracks 10. The driving rear axle 36 can drive the drive wheels 7 to rotate, and the tracks 10 are meshed with the drive wheels 7, thereby driving the tracks 10 to rotate.

[0037] In some embodiments of this application, please refer to Figure 3 , Figure 4 and Figure 5 . The bearing base 11 is installed at the bottom end of the chassis body 1, and the mounting opening 18 can be set in the middle of the bearing base 11, and the second transmission rod 15 passes through the mounting opening 18. Three guide members 17 can be installed on the surface wall of the mounting opening 18 along the circumferential direction, and three guide grooves 16 can be set on the side wall of the second transmission rod 15 along the circumferential direction. Each guide groove 16 is set along the axial direction of the second transmission rod 15. The three guide members 17 are respectively inserted into the three guide grooves 16, and the second transmission rod 15 can slide above or below the mounting opening 18. A driving motor 2 is installed on the chassis body 1, and the output end of the driving motor 2 is connected to the first transmission rod 14 through a coupling. The first transmission rod 14 passes through the chassis body 1 and extends into the transmission groove of the second transmission rod 15. The side wall of the first transmission rod 14 is provided with an external thread, and the inner wall of the transmission groove is provided with an internal thread. The driving motor 2 can drive the first transmission rod 14 to rotate, and the first transmission rod 14 and the second transmission rod 15 are threadedly matched, so that the second transmission rod 15 can slide above or below the installation opening 18. In the braking state, the second transmission rod 15 drives the brake assembly 39 to move below the installation opening 18, and the brake assembly 39 can provide auxiliary braking force to the whole after acting on the ground; in the non-braking state, the second transmission rod 15 drives the brake assembly 39 to move above the installation opening 18, and the brake assembly 39 stops at the bearing base 11 after leaving the ground.

[0038] For example, the brake assembly 39 is composed of a mounting base 12 and a plurality of brake nails 13, and the plurality of brake nails 13 are mounted on the bottom end of the mounting base 12. In the braking state, the second transmission rod 15 drives the mounting base 12 to move downwardly toward the mounting opening 18 until the plurality of brake nails 13 are inserted into the road surface to provide auxiliary braking force, thereby avoiding the problem of the chassis body 1 slipping.

[0039] For example, a spherical groove 19 with an opening is formed at one end of the second transmission rod 15 away from the first transmission rod 14, and a spherical connector 20 is disposed in the spherical groove 19. The spherical connector 20 can rotate in the spherical groove 19, thereby adjusting the angle of the spherical connector 20 in the spherical groove 19. The spherical connector 20 is connected to the mounting base 12 through the above-mentioned opening, so that the mounting base 12 can also be adjusted to different angles in space. In the braking state, the angle of the mounting base 12 can be adjusted according to the slope of the road surface, so that the mounting base 12 can be more closely fitted to the road surface, and more brake nails 13 can be inserted into the road surface, thereby improving the braking effect.

[0040] In some embodiments of this application, please refer to Figure 6 and Figure 7The lighting components can provide light when working in hilly and mountainous areas, avoiding the problem of low work efficiency when the light is dim, and sufficient light can also improve safety during work.

[0041] For example, in the lighting state, the mounting plate 21 can drive the storage bulb 22 to move outside the first mounting groove 4 to reduce obstacles to the light source, thereby increasing the irradiation range of the storage bulb 22. In the non-lighting state, the mounting plate 21 can drive the storage bulb 22 to move into the first mounting groove 4, and store the storage bulb 22 in the first mounting groove 4 to avoid collision between the storage bulb 22 and the outside during operation.

[0042] For example, in the lighting state, the staff presses the limiter 25 into the second mounting groove 23, so that the elastic member 24 is in a compressed state. For example, the elastic member 24 can be a reset spring, and the mounting plate 21 drives the storage bulb 22 to move outside the first mounting groove 4, until the limiter 25 moves to the first limiter groove 5, the limiter 25 is snapped into the first limiter groove 5 under the elastic force of the elastic member 24, thereby fixing the mounting plate 21. In the non-lighting state, the staff presses the limiter 25 into the second mounting groove 23, the mounting plate 21 drives the storage bulb 22 to move into the first mounting groove 4, until the limiter 25 moves to the second limiter groove 6, the limiter 25 is snapped into the second limiter groove 6 under the elastic force of the elastic member 24, thereby fixing the mounting plate 21. The limiter 25 is in sliding fit with the surface wall of the second mounting groove 23, so that the limiter 25 is very smooth during the ejection and pressing process. Furthermore, the top of the limiting member 25 is an arc structure. When the staff presses the limiting member 25 into the second installation groove 23, it is not necessary to completely press the limiting member 25 into the second installation groove 23. When the arc structure at the top of the limiting member 25 is flush with the first limiting groove 5 and the second limiting groove 6, the mounting plate 21 can be pushed to move. The pressure of the side walls of the first limiting groove 5 and the second limiting groove 6 on the limiting member 25 has a component force that pushes the limiting member 25 into the second installation groove 23, which can greatly improve work efficiency.

[0043] In summary, the embodiments of the utility model provide a lightweight HST power chassis specially used for hilly and mountainous areas. When the chassis body 1 is parked on a road with a large slope or a slippery road, the drive motor 2 controls the transmission assembly 38 to move in the forward direction, and the transmission assembly 38 drives the brake assembly 39 to move toward the ground until the brake assembly 39 acts on the ground to provide a large braking force for the chassis body 1, thereby avoiding the chassis body 1 from slipping; before the chassis body 1 needs to travel, the drive motor 2 controls the transmission assembly 38 to move in the reverse direction, and the transmission assembly 38 drives the brake assembly 39 to move away from the ground until the brake assembly 39 leaves the ground and parks at the supporting base 11, thereby avoiding the brake assembly 39 from being obstructed during the driving of the chassis body 1.

[0044] The specific implementation methods described above further illustrate the purpose, technical solutions and beneficial effects of the utility model in detail. It should be understood that the above description is only the specific implementation method of the utility model and is not used to limit the protection scope of the utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A lightweight HST power chassis specially designed for hilly and mountainous areas, characterized in that: include: Chassis body (1); A bearing base (11), the bearing base (11) being mounted on the bottom end of the chassis body (1); A brake assembly (39), wherein the brake assembly (39) is capable of providing auxiliary braking force to the chassis body (1); a transmission assembly (38), the transmission assembly (38) being mounted on the bearing base (11), the transmission assembly (38) being capable of driving the brake assembly (39) to move in a direction away from or towards the chassis body (1); and A drive motor (2), the drive motor (2) being mounted on the chassis body (1), and the drive motor (2) being connected to the transmission assembly (38).

2. The lightweight HST power chassis specially designed for hilly and mountainous areas according to claim 1 is characterized in that: An engine (26), a clutch (27), a transfer case (28), an HST hydrostatic drive device and a drive rear axle (36) are mounted on the chassis body (1); the engine (26) is drive-connected to the clutch (27); the clutch (27) is drive-connected to the transfer case (28); the transfer case (28) is drive-connected to the HST hydrostatic drive device; and the HST hydrostatic drive device is drive-connected to the drive rear axle (36).

3. The lightweight HST power chassis specially designed for hilly and mountainous areas according to claim 1 is characterized in that: The transmission assembly (38) comprises: a first transmission rod (14) and a second transmission rod (15); The bearing base (11) is provided with a mounting opening (18) adapted to the second transmission rod (15), and at least one guide member (17) is installed on a surface wall of the mounting opening (18); One end of the second transmission rod (15) is connected to the brake assembly (39), the other end of the second transmission rod (15) is provided with a transmission groove, the second transmission rod (15) is provided with a guide groove (16), and the guide groove (16) is slidably matched with the guide member (17); One end of the first transmission rod (14) is connected to the drive motor (2), and the other end of the first transmission rod (14) is threadedly engaged with the transmission groove.

4. The lightweight HST power chassis specially designed for hilly and mountainous areas according to claim 3 is characterized in that: The brake assembly (39) comprises a mounting base (12) and a plurality of brake nails (13); One end of the second transmission rod (15) is connected to the mounting base (12), and a plurality of the braking nails (13) are mounted on the mounting base (12).

5. The lightweight HST power chassis specially designed for hilly and mountainous areas according to claim 4 is characterized in that: Also includes a spherical connecting member (20); The second transmission rod (15) is provided with a spherical groove (19) having an opening, the connecting member (20) is located in the spherical groove (19), and the connecting member (20) is connected to the mounting base (12).

6. The lightweight HST power chassis specially designed for hilly and mountainous areas according to claim 1 is characterized in that: A mounting frame (3) is mounted on the chassis body (1), and at least one first mounting groove (4) is formed on the mounting frame (3), wherein a lighting assembly is mounted in the first mounting groove (4).

7. The lightweight HST power chassis specially designed for hilly and mountainous areas according to claim 6 is characterized in that: Also includes a limiter assembly; The lighting assembly comprises a storage light bulb (22) and a mounting plate (21), wherein the storage light bulb (22) is mounted on the mounting plate (21); The mounting plate (21) is mounted in the first mounting groove (4), and both sides of the mounting plate (21) are slidably matched with the surface wall of the first mounting groove (4); Wherein, in the lighting state, the limiting component limits the storage bulb (22) to be outside the first installation groove (4); In a non-lighting state, the limiting assembly limits the storage bulb (22) to be located within the first installation groove (4).

8. The lightweight HST power chassis specially designed for hilly and mountainous areas according to claim 7 is characterized in that: The limiting component comprises: a first limiting groove (5), the first limiting groove (5) being arranged on the mounting frame (3), the first limiting groove (5) being in communication with the first mounting groove (4); a second limiting groove (6), the second limiting groove (6) being arranged on the mounting frame (3), the second limiting groove (6) being in communication with the first mounting groove (4); A second mounting groove (23), wherein the second mounting groove (23) is provided on the mounting plate (21); an elastic member (24), one end of the elastic member (24) being connected to the surface wall of the second mounting groove (23), and the other end of the elastic member (24) being connected to the limiting member (25); Wherein, in the lighting state, the limiting member (25) is inserted into the first limiting groove (5), and the storage light bulb (22) is limited outside the first installation groove (4); In a non-lighting state, the limiting member (25) is inserted into the second limiting groove (6), and the storage light bulb (22) is limited in the first installation groove (4).

9. The lightweight HST power chassis specially designed for hilly and mountainous areas according to claim 8 is characterized in that: The top end of the limiting member (25) is an arc structure.

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