CN113588295A

CN113588295A - Test device for researching soil compaction effect when tire heels

Info

Publication number: CN113588295A
Application number: CN202111033175.9A
Authority: CN
Inventors: 靳红玲; 赵亚君; 马思鹏; 党小选
Original assignee: Northwest A&F University
Current assignee: Northwest A&F University
Priority date: 2021-09-03
Filing date: 2021-09-03
Publication date: 2021-11-02

Abstract

The invention provides a test device for researching the soil compaction effect of a tire during heeling, which comprises a load box, a pulley assembly, a frame, a wheel axle stand column, a positioning chute, a suspension bracket and a lead screw, wherein the load box is connected with the pulley assembly; the load box is fixed with the pulley assembly; the wheel shaft upright post and the wheel shaft are fixedly arranged, and the positioning chute is fixed on the frame; the suspension bracket is arranged in front of the frame; the lead screw is arranged at the rear end of the frame and is connected with the load box through a lead screw sleeve. Adjusting the mounting position of the wheel shaft upright column, changing the side inclination angle of the vehicle body, and connecting the suspension bracket with tractors such as a soil tank test vehicle or a tractor and the like; the load box is filled with a load and the load position is adjusted by a lead screw to change the axle load of the wheel. Therefore, the device can study the influence of the roll angle, the axle load and the driving speed on the compaction of the soil by the tire. The soil compaction tester has the advantages of simple structure, convenience in installation, strong universality, and capability of researching the compaction effect of different types of tires on soil by replacing tires of different types.

Description

Test device for researching soil compaction effect when tire heels

Technical Field

The invention relates to the technical field of agricultural machinery, in particular to a test device for researching the soil compaction effect when a tire inclines.

Background

With the continuous development of agricultural machinery in large-scale and intelligent directions and the continuous improvement of the popularization rate of agricultural machinery in China, the research on the interaction between the agricultural vehicle and soil during field operation is more and more important. The study of the interaction between vehicles and the soil belongs to the category of vehicle ground mechanics. At present, in the field of vehicle ground mechanics, more researches are carried out on common horizontal straight running working conditions, and less researches are carried out on the working conditions of side inclination when a tire runs. In fact, in the lateral direction perpendicular to the driving direction, the inclination of the road surface or the tire also often occurs, and the compaction effect of the inclination angle of the tire on the soil is different, so that an experimental device capable of adjusting the inclination angle of the tire side is required to be designed for researching the compaction effect of the inclination angle of the tire on the soil during the driving of the vehicle.

Disclosure of Invention

The invention aims to provide a test device for researching the soil compaction effect when a tire inclines, which can be matched with tractors such as a soil tank test vehicle or a tractor through three-point suspension to research the soil compaction effect of the tire under different inclination angles in a soil tank or a field so as to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: a test device for researching soil compaction effect when a tire inclines comprises a load box, a pulley assembly, a frame, a wheel axle upright post, a positioning chute, a test tire, a suspension bracket and a lead screw; the pulley assembly consists of a pulley, a pulley fixing plate and a guide rail clamping plate and is arranged on the frame guide rail; the bottom of the load box is fixed with the pulley fixing plate; the wheel shaft upright post is provided with through holes at equal intervals, the bottom of the wheel shaft upright post is fixedly arranged with a wheel shaft, and the positioning chute is vertically fixed on the frame and is provided with through holes corresponding to the wheel shaft upright post; the suspension bracket is arranged in front of the frame through a rotating shaft; the lead screw is arranged at the rear end of the frame and connected with a lead screw sleeve, and the tail end of the lead screw sleeve is connected with the load box.

As a preferred technical scheme of the invention, the wheel axle upright post and the positioning chute are respectively provided with through holes at equal intervals, and the wheel axle upright post and the positioning chute are fixed by bolts penetrating through the corresponding through holes.

As a preferable technical scheme of the invention, the pulley fixing plate is provided with a mounting hole matched with the guide rail clamping plate, and the guide rail clamping plate is embedded into the mounting hole and fixed by a bolt.

As a preferable technical scheme of the invention, a rotating shaft is fixedly arranged behind the suspension bracket, passes through a through hole of the suspension bracket and is provided with a round nut to limit the axial movement of the rotating shaft.

As a preferable technical scheme of the invention, the screw rod penetrates through a through hole at the rear part of the frame and is in threaded connection with the screw rod sleeve, and the tail end of the screw rod sleeve is connected with the bottom of the load box in a hinged mode.

The invention has the beneficial effects that:

the invention mainly comprises a load box, a screw rod, a pulley assembly, a frame, a wheel shaft upright post, a suspension bracket and the like, and has simple structure and convenient installation; a plurality of groups of through holes are formed in the wheel shaft upright post and the positioning sliding groove, so that the large-range adjustment of the side-tipping inclination angle can be realized; compared with the traditional fixed suspension bracket, the suspension bracket is designed to be rotatable, so that the vehicle body can be ensured to roll, and meanwhile, the effective connection with a three-point suspension mechanism of the tractor can be still maintained, and the aim of traction is fulfilled; the interaction between different types of tires and soil can be researched by replacing tires with different types, so that the universality is strong; meanwhile, when the device is used for testing, the operation is convenient and fast.

Drawings

Fig. 1 and 2 are schematic structural diagrams of the present invention.

Fig. 3 is a schematic structural view of the pulley assembly.

Fig. 4 is a schematic structural diagram of the axle pillar.

In the figure: 1. a load box; 2. a pulley assembly; 3. a frame; 4. a pin shaft; 5. a suspension bracket; 6. a wheel axle; 7. testing the wheel; 8. a lead screw hand wheel; 9. a lead screw; 10. a lead screw sleeve; 11. positioning the chute; 12. a chute through hole; 13. a rotating shaft; 14. a round nut; 15. hanging a fixed frame; 16. a guide rail; 17. a pulley fixing plate; 18. a clamp plate bolt; 19. a guide rail clamp plate; 20. a pulley; 21. a wheel axle column; 22. and a column through hole.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and should not be construed as limiting the scope of the invention.

Referring to fig. 1, 2, 3 and 4, the invention provides a test device for studying the soil compaction effect of a tire during side inclination, which comprises a load box 1, a pulley assembly 2, a frame 3, a suspension bracket 5, a wheel axle 6, a test wheel 7, a screw rod 9, a positioning chute 11 and an upright post 21; the pulley assembly 2 consists of a pulley fixing plate 17, a guide rail clamping plate 19 and a pulley 20 and is arranged on a guide rail 16 formed between upper-layer square steel and lower-layer square steel of the frame 3; the bottom of the load box 1 is fixed with a pulley fixing plate 17; the wheel axle upright post 21 is provided with through holes 22 at equal intervals, the bottom of the wheel axle upright post is fixedly arranged with the wheel axle 6, the positioning chute 11 is vertically fixed on the frame 3 and is provided with through holes 12 corresponding to the wheel axle upright post 21; the suspension bracket 5 is arranged in front of the frame 3 through a rotating shaft 13; the lead screw 9 is installed at the rear end of the frame 3 and connected with a lead screw sleeve 10, and the tail end of the lead screw sleeve 10 is connected with the load box 1.

Further, the wheel axle upright post 21 and the positioning chute 11 are provided with through holes at equal intervals, and bolts penetrate through the corresponding through holes and are fixed.

Furthermore, the pulley fixing plate 17 is provided with a mounting hole matched with the guide rail clamping plate 19, and the guide rail clamping plate 19 is embedded into the mounting hole and fixed by the bolt 18.

Further, a rotating shaft 13 is fixedly installed behind the suspension bracket 5, and the rotating shaft 13 penetrates through a through hole of a suspension fixing bracket 15 and is provided with a round nut 14 to limit axial movement of the rotating shaft.

Further, the lead screw 9 penetrates through a through hole in the rear of the frame 3 and is in threaded connection with a lead screw sleeve 10, and the tail end of the lead screw sleeve 10 is connected with the bottom of the load box 1 in a hinged mode.

The working principle of the invention is as follows: the invention can be towed by tractors such as soil tank test vehicles or tractors through three-point suspension, and the compaction effect of tires on soil at different side inclination angles is researched in soil tanks or fields. When the vehicle body side-tipping inclination angle adjusting device is used, the relative positions of the wheel axle upright posts 21 on the two sides and the positioning sliding grooves 11 are adjusted, bolts are arranged in the corresponding through holes, and the relative positions are fixed, so that the side-tipping inclination angle of the vehicle body can be changed. Rotating the front suspension bracket 5 around the through hole of the suspension fixing bracket 15, adjusting the angle until the angle is matched with the three-point suspension mechanism of the tractor, and respectively connecting the three pin shafts 4 on the suspension bracket with the three-point suspension mechanism of the tractor; loads with different masses are filled in the load box 1, the load box 1 and the pulley assembly 2 move back and forth on the guide rail 16 by rotating the lead screw hand wheel 8, and therefore the gravity center position of the loads is adjusted to meet the requirements of applying different axle loads to the test wheels 7; after the position of the load box 1 is adjusted, the bolts on the guide rail clamping plates 19 are screwed down, so that the friction force between the guide rail clamping plates 19 and the frame guide rail 16 can be increased, the relative positions of the load box 1 and the frame 3 are fixed, and the axle load change of the wheels 7 caused by the back and forth movement of the load box 1 due to inertia when the test vehicle is started or stopped suddenly is prevented. By adjusting the heights of the tires on the two sides, increasing and decreasing the load and changing the driving speed of the tractor, the influence of the roll angle, the axle load and the driving speed on the effect of compacting the soil by the tires can be researched.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A test device for researching the soil compaction effect of a tire during heeling comprises a load box 1, a pulley assembly 2, a frame 3, a suspension bracket 5, a wheel shaft 6, a test wheel 7, a lead screw 9, a positioning chute 11 and an upright post 21; the pulley assembly 2 is characterized by comprising a pulley fixing plate 17, a guide rail clamping plate 19 and a pulley 20 and is arranged on a guide rail 16 formed between upper-layer square steel and lower-layer square steel of the frame 3; the bottom of the load box 1 is fixed with a pulley fixing plate 17; the wheel axle upright post 21 is provided with through holes 22 at equal intervals, the bottom of the wheel axle upright post is fixedly arranged with the wheel axle 6, the positioning chute 11 is vertically fixed on the frame 3 and is provided with through holes 12 corresponding to the wheel axle upright post 21; the suspension bracket 5 is arranged in front of the frame 3 through a rotating shaft 13; the lead screw 9 is installed at the rear end of the frame 3 and connected with a lead screw sleeve 10, and the tail end of the lead screw sleeve 10 is connected with the load box 1.

2. The test device for studying the soil compaction effect when the tire rolls is characterized in that the axle upright 21 and the positioning chute 11 are provided with through holes at equal intervals and are fixed by bolt and nut fit.

3. The test device for studying the soil compaction effect when the tire rolls is according to claim 1, wherein the pulley fixing plate 17 is provided with a mounting hole matched with the guide rail clamping plate 19, and the guide rail clamping plate 19 is embedded in the mounting hole.

4. The test device for researching the effect of the tire on soil compaction when the tire inclines is characterized in that a rotating shaft 13 is fixedly arranged at the rear of the suspension bracket 5, the rotating shaft 13 penetrates through a through hole of a suspension fixing bracket 15, and a round nut 14 is arranged to limit the axial movement of the rotating shaft 13.

5. The test device for studying the soil compaction effect when the tire rolls is characterized in that the screw rod 9 penetrates through a through hole at the rear of the frame 3 and is in threaded connection with a screw rod sleeve 10, and the tail end of the screw rod sleeve 10 is connected with the bottom of the load box 1 in an articulated mode.