Hydraulically-driven hinged ice and snow removing operation platform

Abstract

The invention discloses a hydraulic drive hinged ice and snow removal operation platform, and belongs to the technical field of snow sweeper chassis, the hydraulic drive hinged ice and snow removal operation platform comprises a chassis assembly and a power assembly, the chassis assembly comprises a front frame and a rear frame hinged to the front frame, a front PTO is installed at the front end of the front frame, a front axle and a front wheel set are installed at the lower end of the front frame, a rear PTO is installed at the rear end of the rear frame, and a rear axle is installed at the rear end of the rear frame. A rear axle and a rear wheel set are installed at the lower end of the rear frame, the power assembly comprises an engine installed on the rear frame, the engine is connected with an input shaft of a transfer case through a coupler, the output end of the transfer case is connected with a front PTO, a rear PTO and a hydraulic pump, and the hydraulic pump supplies oil to a front hydraulic motor and a rear hydraulic motor through a flow distributing and collecting valve. The front hydraulic motor and the rear hydraulic motor are connected to the front drive axle and the rear drive axle through splines, speed reduction and torque increase are achieved through the main speed reducer and the hub reduction gear, and therefore the front wheel set and the rear wheel set are driven. The invention has the advantages of flexibility, convenience, convenience in operation and stronger function expansion performance.

Description

Technical Field

[0001] The invention relates to the technical field of snow removal vehicle chassis, and in particular to a hydraulically driven articulated snow and ice removal operation platform. Background Art

[0002] Snowplows are highly efficient equipment used to clear snow and ice from roads and are suitable for clearing narrow roads.

[0003] Conventional snowplows are large in size and have a large turning radius due to their internal layout, which results in low operating efficiency or even inability to operate normally on narrow roads. Summary of the invention

[0004] The present invention aims to solve the technical problems mentioned in the above background technology, and to provide a hydraulically driven articulated snow and ice removal operation platform, which can overcome the narrow environment and space and effectively reduce the turning radius.

[0005] The technical solution provided by the present invention is: a hydraulically driven articulated snow and ice removal operation platform, comprising: The chassis assembly includes a front frame and a rear frame articulated therewith, a front PTO is installed at the front end of the front frame, a front axle and a front wheel set are installed at the lower end of the front frame, a rear PTO is installed at the rear end of the rear frame, and a rear axle and a rear wheel set are installed at the lower end of the rear frame; The powertrain includes an engine installed on the rear frame. The engine is connected to the input shaft of the transfer case through a coupling. The output end of the transfer case is respectively connected to the front PTO, rear PTO and hydraulic pump. The hydraulic pump supplies oil to the front and rear hydraulic motors through the diverter and collector valves. The front and rear hydraulic motors are connected to the front drive axle and the rear drive axle through splines. The speed reduction and torque increase are achieved through the main reducer and wheel-side reducer, thereby driving the front and rear wheel groups.

[0006] In some embodiments, a first concave portion and a second concave portion are vertically arranged at the rear end of the front frame, and vertical pin holes are provided on the first concave portion and the second concave portion, and hinge pins are provided in the pin holes. A first convex portion is provided at the front end of the rear frame and is located in the first concave portion, and a second convex portion is provided in the second concave portion. Vertical through holes are provided on the first convex portion and the second convex portion corresponding to the pin holes, and shaft sleeves are installed in the through holes. A cushion block is provided between the upper end of the first convex portion and the lower end of the first concave portion, and a cushion block is provided between the lower end of the second convex portion and the upper end of the second concave portion.

[0007] In some embodiments, a cab is mounted on the front frame, the cab is connected to the front frame via bolts, and a rubber isolation pad is used to achieve a shock-absorbing effect.

[0008] In some embodiments, the hydraulic pump is a double pump, which includes a closed axial piston pump and an open gear pump. The closed axial piston pump supplies oil to the front and rear hydraulic motors through a hydraulically controlled reversing valve to meet the different load requirements of the front and rear hydraulic motors, and the hydraulic motors are directly connected to the front and rear axles to realize hydraulic four-wheel drive.

[0009] In some embodiments, the hydraulic motor is a variable displacement motor.

[0010] In some embodiments, the hydraulic pump is a duplex pump, which includes a closed axial piston pump and an open gear pump. The open gear pump provides the accumulator with oil required for hydraulic braking through a priority valve and a charging valve. When the vehicle is braking, the accumulator supplies oil to the wet brakes of the front and rear axles through a parallel dual-way regulating brake valve, thereby achieving braking of the snowplow.

[0011] In some embodiments, the hydraulic pump is a duplex pump, which includes a closed axial piston pump and an open gear pump. The open gear pump supplies oil to the steering cylinder through a priority valve and a full hydraulic steering gear, thereby achieving steering of the snowplow.

[0012] In some embodiments, the hydraulic pump is a double pump, which includes a closed axial piston pump and an open gear pump. The open gear pump supplies oil to the cylinder through a multi-way valve to control the extension and retraction of the hydraulic cylinder, thereby realizing the lifting and swinging of the snow removal equipment.

[0013] In some embodiments, the input shaft of the transfer case is connected to the first output end of the front PTO and the third output end of the rear PTO through a hydraulic clutch, and the transfer case is further provided with a second output end connected to a hydraulic pump.

[0014] Compared with the prior art, the advantages of the present invention are: 1. The snowplow working platform of the present invention adopts a hydraulic drive mode, and the hydrostatic drive adopts a pump and two motors structure. A single motor is directly connected to the center of the axle to directly drive the axle with sufficient power; 2. The snowplow working platform of the present invention adopts an articulated body design to effectively reduce the turning radius; 3. The whole vehicle has a variety of power output ports and has strong functional expansion performance. There are PTO power output ports at the front and rear of the vehicle, and the hydraulic output meets the operating requirements of the snowplow under different working conditions.

[0015] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 2 is a schematic diagram of a snow removal vehicle operation platform according to an embodiment of the present invention; Figure 2 Schematic diagram of the hinged parts of the front and rear frames of an embodiment of the present invention; Figure 3is a working principle diagram of a transfer case according to an embodiment of the present invention; Figure 4 Schematic diagram of a snowplow chassis according to an embodiment of the present invention.

[0017] In the attached figure: 1. cab; 2. front PTO; 3. front axle; 4. rear axle; 5. rear PTO; 6. engine; 7. fuel tank; 8. hinged part; 9. solenoid valve group; 10. hinge pin; 11. cushion block; 12. bushing; 13. rear frame; 14. first concave portion; 15. second concave portion; 16. first convex portion; 17. front frame; 18. input shaft; 19. third output end; 20. first output end; 21. hydraulic clutch; 22. second output end; 23. radiator; 24. oil pipe. DETAILED DESCRIPTION

[0018] The present invention is described in further detail below.

[0019] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0020] Combination Figure 1 , Figure 2 As shown, this embodiment is a hydraulically driven articulated snow and ice removal work platform. In order to improve the flexibility of the snow removal work platform, the chassis adopts a split design in the body structure, which is divided into a front frame 17 and a rear frame 13. The front and rear frames are connected by pin shaft hinges, which are simple to install and convenient to replace and maintain. This embodiment adopts a pin-sleeve hinge structure, which is mainly composed of a hinge pin 10, a shaft sleeve 12 and a cushion block 11. The shaft sleeve 12 is assembled in the hinge hole of the rear frame 13. The hinge pin 10 rotates relative to the shaft sleeve 12, and the cushion block 11 plays an axial positioning and friction reduction role.

[0021] A cab 1 is arranged on the front frame 17 of the chassis. The cab 1 is connected to the front frame 17 by bolts, and a rubber isolation pad is used to achieve a shock-absorbing effect.

[0022] The engine 6 is rear-mounted on the rear frame 13. The engine 6 is fixed at four points. The four corners of the front and rear ends of the engine 6 are added to the bracket. The bracket is connected to the bottom corner pad. The four bottom corner pads are added to the rear frame 13. The fixing holes of the bracket are aligned with the mounting holes on the engine 6 to ensure that the bottom surface of the bracket is in good contact with the engine 6. Bolts of appropriate length are used. The bolts should pass through the bottom holes of the bracket and the bottom corner pads and enter the reserved holes of the rear frame 13. The bottom corner pads are placed at the bottom of the bracket to ensure that the center of the gasket is aligned with the contact surface of the bracket and the rear frame 13.

[0023] A front PTO 2 is installed at the front end of the front frame 17, a front axle 3 and a front wheel set are installed at the lower end of the front frame 17, and a rear PTO 5 is installed at the rear end of the rear frame 13. The PTO power take-off mode is designed according to the engine parameters, and the PTO power and speed ratio are determined by the actual working conditions of the external machine. The PTO power take-off position can be determined according to the actual situation, which is convenient for the external machine to take power.

[0024] The rear axle 4 and the rear wheel group are installed at the lower end of the rear frame 13. The front (rear) frame and the front (rear) axle are connected with high-strength bolts and hexagonal nuts. The material of the nuts matches the bolts. Washers are placed between the nuts and the connecting surface to prevent the nuts from loosening and reduce wear. Aligned connecting holes are provided on the frame and the axle. The diameter of the holes matches the bolts to ensure that the bolts can be installed smoothly. A snow shovel and snow brush assembly frame is provided at the front of the cab 1. The snow shovel, snow brush and assembly frame are installed in a three-point suspension manner.

[0025] In terms of power, combined Figure 3 , Figure 4 As shown, the flywheel of engine 6 is connected to the transfer case through an elastic coupling, and the elastic coupling connects engine 6 and the transfer case to ensure smooth power transmission and absorb certain vibrations and displacements.

[0026] The transfer case has one-to-three outputs. The input shaft 18 outputs power to the front PTO2 (first output end 20), one end outputs power to the rear PTO5 (third output end 19), and one end is distributed to the hydraulic pump (second output end 22). The hydraulic clutch 21 controls the first output end 20 and the third output end 19. During operation, the clutch is closed and the PTO outputs power. During the transfer process, the clutch is disengaged and the PTO cuts off the power output.

[0027] The hydraulic pump is a double pump, and the hydraulic motor is a variable motor. A variable motor is installed on the front and rear axles. The double pump includes a closed axial piston pump and an open gear pump. When the vehicle moves forward or backward, the closed axial piston pump supplies oil to the front and rear variable motors through a hydraulically controlled reversing valve to meet the different load requirements of the front and rear hydraulic motors, so as to achieve the purpose of synchronous operation of the snowplow under eccentric load conditions, and the variable motor is directly connected to the drive components of the front and rear axles through splines. Finally, the main reducer and wheel-side reducer are used to reduce speed and increase torque to drive the wheels on both sides to achieve four-wheel drive. The vehicle can be moved backward by changing the flow direction of the hydraulic oil.

[0028] When the vehicle brakes, the open gear pump provides the accumulator with the oil required for hydraulic braking through the priority valve and the charging valve. When the vehicle brakes, the accumulator supplies oil to the wet brakes of the front and rear axles through the parallel dual-way regulating brake valve, thereby achieving braking of the snowplow.

[0029] When the vehicle turns, the open gear pump supplies oil to the steering cylinder through the priority valve and the full hydraulic steering gear, thereby realizing the steering of the snowplow.

[0030] When hydraulic output is performed, the open gear pump supplies oil to the cylinder through the multi-way valve to control the extension and retraction of the hydraulic cylinder, thereby realizing the lifting and swinging of the snow removal equipment.

[0031] The snowplow operating platform of this embodiment has an articulated body design, which effectively reduces the turning radius and has the characteristics of flexibility, convenience and easy operation. The drive system adopts a 4×4 hydraulic drive mode with sufficient power. The maximum transfer speed is set at 35km / h and the operating speed is 15km / h. In order to improve the operating efficiency, it is necessary to have the technical performance of multiple working devices operating simultaneously to achieve one machine with multiple functions. There is a set of PTO power output ports at the front and rear of the vehicle, and the hydraulic output meets the operating requirements of the snowplow under different working conditions. At the same time, it has multiple groups (no less than 5 groups in the front and 4 groups in the rear) of hydraulic outputs, and has strong functional expansion performance.

[0032] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A hydraulically driven articulated snow and ice removal platform, characterized in that: include: A chassis assembly, the chassis assembly comprising a front frame (17) and a rear frame (13) hinged thereto, the front end of the front frame (17) being mounted with a front PTO (2), the lower end of the front frame (17) being mounted with a front axle (3) and a front wheel set, the rear end of the rear frame (13) being mounted with a rear PTO (5), and the lower end of the rear frame (13) being mounted with a rear axle (4) and a rear wheel set; A power assembly, the power assembly comprising an engine (6) mounted on a rear frame (13), the engine (6) being connected to an input shaft (18) of a transfer case via a coupling, the output end of the transfer case being respectively connected to a front PTO (2), a rear PTO (5) and a hydraulic pump, the hydraulic pump supplying oil to front and rear hydraulic motors via a flow divider and collector valve, the front and rear hydraulic motors being connected to a front drive axle and a rear drive axle via splines, and achieving speed reduction and torque increase via a main reducer and a wheel-side reducer, thereby driving a front wheel group and a rear wheel group.

2. The hydraulically driven articulated snow and ice removal platform according to claim 1 is characterized in that: A first concave portion (14) and a second concave portion (15) are arranged vertically at the rear end of the front frame (17); a vertical pin hole is provided on the first concave portion (14) and the second concave portion (15); a hinge pin (10) is provided in the pin hole; a first convex portion (16) is provided at the front end of the rear frame (13) and is located in the first concave portion (14); a second convex portion is provided and is located in the second concave portion (15); vertical through holes are provided on the first convex portion (16) and the second convex portion corresponding to the pin hole; axle sleeves (12) are installed in the through holes; a cushion block (11) is provided between the upper end of the first convex portion (16) and the lower end of the first concave portion (14); and a cushion block (11) is provided between the lower end of the second convex portion and the upper end of the second concave portion (15).

3. The hydraulically driven articulated snow and ice removal platform according to claim 1 is characterized in that: A cab (1) is mounted on the front frame (17); the cab (1) is connected to the front frame (17) via bolts, and a rubber isolation pad is used to achieve a shock-absorbing effect.

4. The hydraulically driven articulated snow and ice removal platform according to claim 1 is characterized in that: The hydraulic pump is a double pump, which includes a closed axial piston pump and an open gear pump. The closed axial piston pump supplies oil to the front and rear hydraulic motors through a hydraulically controlled reversing valve to meet the different load requirements of the front and rear hydraulic motors, and the hydraulic motors are directly connected to the front and rear axles to realize hydraulic four-wheel drive.

5. The hydraulically driven articulated snow and ice removal platform according to claim 4 is characterized in that: The hydraulic motor is a variable displacement motor.

6. The hydraulically driven articulated snow and ice removal platform according to claim 1 is characterized in that: The hydraulic pump is a duplex pump, which includes a closed axial piston pump and an open gear pump. The open gear pump provides the accumulator with oil required for hydraulic braking through a priority valve and a charging valve. When the vehicle is braked, the accumulator supplies oil to the wet brakes of the front and rear axles through a parallel dual-way regulating brake valve, thereby achieving braking of the snowplow.

7. The hydraulically driven articulated snow and ice removal platform according to claim 1 is characterized in that: The hydraulic pump is a double pump, which includes a closed axial piston pump and an open gear pump. The open gear pump supplies oil to the steering cylinder through a priority valve and a full hydraulic steering gear, thereby realizing the steering of the snowplow.

8. The hydraulically driven articulated snow and ice removal platform according to claim 1 is characterized in that: The hydraulic pump is a double pump, which includes a closed axial piston pump and an open gear pump. The open gear pump supplies oil to the cylinder through a multi-way valve to control the extension and retraction of the hydraulic cylinder, thereby realizing the lifting and swinging of the snow removal equipment.

9. The hydraulically driven articulated snow and ice removal platform according to claim 1, characterized in that: The input shaft (18) of the transfer case is connected to a first output end (20) of the front PTO (2) and a third output end (19) of the rear PTO (5) via a hydraulic clutch (21); the transfer case is also provided with a second output end (22) connected to a hydraulic pump.

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