Disc disk blade in-situ performance testing device

Abstract

The invention discloses a disc harrow blade in-situ performance testing device, which comprises a mounting plate, a support frame, a lifting mechanism, a disc harrow blade assembly, a transmission and testing mechanism and a CCD sensor, and is characterized in that the mounting plate is connected with the support frame below the mounting plate through the lifting mechanism; the disc harrow blade assembly is rotationally connected with the supporting frame. The transmission and testing mechanism is installed on the supporting frame and is in transmission connection with the disc harrow blade assembly. The CCD sensor is installed on the supporting frame and is aligned with the disc harrow blade assembly. According to the disc harrow blade in-situ performance testing device, disc harrow blade in-situ performance testing is achieved, the operation effects of soil adhesion, straw smashing and the like on the surface of the disc harrow blade in the operation process are measured and evaluated, the influence of the optimal penetrating angle of the disc harrow blade and the three-dimensional distance between the front disc harrow blade shaft and the rear disc harrow blade shaft on the operation effect is measured, and the optimal operation effect in disc harrow operation is achieved; and the fuel economy and the operation efficiency are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of testing technology of tillage machinery parts, in particular to a disc harrow blade in-situ performance testing device. BACKGROUND

[0002] With the increase of population, the importance of food security is increasingly prominent and obvious. While improving and modifying the soil to expand the agricultural cultivation area, good agricultural equipment is of great significance to the plowing, planting, management and harvesting of the agricultural system. Good agricultural equipment is the core engine of modern agricultural development. Good and advanced agricultural equipment is no longer a simple production tool replacement for modern agriculture, but a core engine to promote the modernization, intensification and sustainable development of agriculture, which is of great significance and far-reaching.

[0003] As one of the most core and widely used agricultural equipment in the field of agricultural equipment, the disc harrow plays an important role in soil cutting, soil crushing, soil loosening, plowing, ditching, ridging, stubble cleaning and soil covering. However, the current disc harrow production does not evaluate the adhesion reduction and detachment performance of the disc harrow blade and the best soil entry angle and other operation and installation parameters, which affects the operation effect and efficiency of the disc harrow, and the user can only change the performance parameters of the disc harrow through his own experience.

[0004] Therefore, it is an urgent problem for those skilled in the art to provide a disc harrow blade in-situ performance testing device. SUMMARY

[0005] Therefore, the present application provides a disc harrow blade in-situ performance testing device to solve the technical problems mentioned in the background.

[0006] In order to achieve the above purpose, the present application adopts the following technical solutions:

[0007] A disc harrow blade in-situ performance testing device, comprising a mounting plate, a support frame, a lifting mechanism, a disc harrow blade assembly, a transmission and testing mechanism and a CCD sensor, the mounting plate and the support frame below it are connected through the lifting mechanism; the disc harrow blade assembly is rotatably connected with the support frame; the transmission and testing mechanism is installed on the support frame and is in transmission connection with the disc harrow blade assembly; the CCD sensor is installed on the support frame and is aligned with the disc harrow blade assembly.

[0008] Further, the support frame comprises a support plate and two side plates, the support plate is connected with the two side plates as a whole; each of the side plates is provided with an arc-shaped sliding groove; the mounting plate is connected with the support plate through the lifting mechanism; the two ends of the disc harrow blade assembly are rotatably connected with the two side plates and extend out of the arc-shaped sliding grooves; the transmission and testing mechanism is installed on the support plate; the CCD sensor is installed on the side plate.

[0009] Further, the lifting mechanism comprises a worm gear, a rack and a plurality of guide rods, the worm gear is installed on the mounting plate through a mounting seat; the bottom end of the rack is installed on the support plate through a fixing seat, the top end of the rack penetrates the mounting plate and is meshingly connected with the worm gear; the plurality of guide rods all vertically penetrate the mounting plate, and each of the guide rods is connected with the mounting plate through a linear bearing.

[0010] Further, the transmission and testing mechanism comprises a motor, a torque sensor, a bearing seat, a first chain wheel, a second chain wheel and a chain, the motor and the bearing seat are installed on the support plate and located on the same horizontal line; the input shaft of the torque sensor is connected with the motor, the output shaft of the torque sensor is installed on the bearing seat through a bearing; the first chain wheel is installed on the extended end of the output shaft, the second chain wheel is installed on the disc harrow blade assembly, and the first chain wheel and the second chain wheel are drivingly connected through the chain.

[0011] Further, the disc harrow blade assembly comprises a square tube, two shafts, a plurality of disc harrow blades, two forked brackets, a fixing pin and two connecting plates, the square tube is connected with the two shafts at the two ends as a whole, and the two shafts penetrate the two arc-shaped sliding grooves respectively; the second chain wheel is installed on the shaft; the forked bracket penetrates the square tube and is rotatably connected therewith, and the forked bracket and the square tube are fixedly connected through the fixing pin; the plurality of disc harrow blades are sleeved on the square tube and are distributed at intervals, and each of the disc harrow blades is fixedly connected with the corresponding forked bracket; the two connecting plates are installed on the two shafts through bearings respectively, and the two connecting plates are connected with the two side plates through fasteners respectively.

[0012] Further, the number of the disc harrow blade assemblies is two, and correspondingly, the number of the transmission and testing mechanisms and the number of the CCD sensors are both two; each of the side plates is provided with two arc-shaped sliding grooves distributed in front and back; the two disc harrow blade assemblies are distributed in front and back at intervals.

[0013] Further, the disc harrow blade is replaced by a deep ploughing shovel or a rotary tiller.

[0014] Further, the disc harrow blade in-situ performance testing device further comprises a soil tank and a slide rail, the slide rail is fixed at the top of the soil tank; the mounting plate is in sliding connection with the slide rail.

[0015] Further, the disc harrow blade in-situ performance testing device further comprises a support and a wheel, the top of the support is fixedly connected with the mounting plate; the wheel is installed at the bottom of the support.

[0016] Therefore, the disc harrow blade in-situ performance testing device has the following beneficial effects compared with the prior art:

[0017] 1) The disc harrow blade in-situ performance testing device can measure and evaluate the working effect of soil adhesion and straw crushing on the surface of the disc harrow blade during working, collect information such as soil moisture content and strength of the working area during working, and measure the influence of the optimal soil entering angle of the disc harrow blade and the three-dimensional spacing between the front and rear disc harrow blade shafts on the working effect, so as to realize the best working effect during working of the disc harrow and improve fuel economy and working efficiency.

[0018] 2) The disc harrow blade in-situ performance testing device has simple structure, high flexibility and easy operation, and can be used for in-situ performance testing in a laboratory and in a field, thereby ensuring the reliability of the test results.

[0019] 3) The disc harrow blade in-situ performance testing device can be used for disc harrow blades and deep scarification shovels, and has better adaptability. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of the provided drawings.

[0021] Figure 1 The accompanying drawings are an exploded view of the disc harrow blade in-situ performance testing device provided by the present application;

[0022] Figure 2 The accompanying drawings are a structural schematic view of the disc harrow blade in-situ performance testing device under field conditions provided by the present application;

[0023] Figure 3 The accompanying drawings are a structural schematic view of the disc harrow blade in-situ performance testing device under laboratory conditions provided by the present application;

[0024] Figure 4 The accompanying drawings are a semi-sectional view of the disc harrow blade in-situ performance testing device under laboratory conditions provided by the present application. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort belong to the scope of protection of the present application.

[0026] Embodiment 1:

[0027] As shown in Figure 1 , 2 , the embodiment of the present application discloses a disc harrow blade in-situ performance testing device, which comprises a mounting plate 1, a support frame 2, a lifting mechanism 3, a disc harrow blade assembly 4, a transmission and testing mechanism 5, a CCD sensor 6, a support 7 and a wheel 8. The mounting plate 1 is connected with the support frame 2 below through the lifting mechanism 3. The disc harrow blade assembly 4 is rotationally connected with the support frame 2. The transmission and testing mechanism 5 is installed on the support frame 2 and is in transmission connection with the disc harrow blade assembly 4. The CCD sensor 6 is installed on the support frame 2 and is aligned with the disc harrow blade assembly 4. The top of the support 7 is fixedly connected with the mounting plate 1. The wheel 8 is installed at the bottom of the support 7. The present application realizes in-situ performance testing of the disc harrow blade, realizes measurement and evaluation of the working effect of soil adhesion and straw crushing on the surface of the disc harrow blade during the working process, measures the influence of the best soil entering angle of the disc harrow blade and the three-dimensional spacing between the front and rear disc harrow blade shafts on the working effect, realizes the best working effect in the disc harrow working process, and improves fuel economy and working efficiency.

[0028] Specifically, the support frame 2 comprises a support plate 21 and two side plates 22. The support plate 21 is connected with the two side plates 22 on both sides as a whole. Each side plate 22 has an arc-shaped sliding groove 221. The mounting plate 1 is connected with the support plate 21 through the lifting mechanism 3. The two ends of the disc harrow blade assembly 4 are rotationally connected with the two side plates 22 and extend out of the arc-shaped sliding grooves 221. The transmission and testing mechanism 5 is installed on the support plate 21. The CCD sensor 6 is installed on the side plate 22.

[0029] Specifically, the lifting mechanism 3 comprises a worm gear 31, a rack 32 and a plurality of guide rods 33. The worm gear 31 is installed on the mounting plate 1 through a mounting seat. The bottom end of the rack 32 is installed on the support plate 21 through a fixing seat 34. The top end of the rack 32 penetrates the mounting plate 1 and is in meshing connection with the worm gear 31. The plurality of guide rods 33 are vertically penetrated through the mounting plate 1. Each guide rod 33 is connected with the mounting plate 1 through a linear bearing 35.

[0030] Specifically, the transmission and testing mechanism 5 includes a motor 51, a torque sensor 52, a bearing housing 53, a first sprocket 54, a second sprocket 55, and a chain 56. The motor 51 and the bearing housing 53 are both mounted on the support plate 21 and are located on the same horizontal line. In this embodiment, the motor 51 is an adjustable frequency conversion motor. The input shaft of the torque sensor 52 is connected to the motor 51, and the output shaft of the torque sensor 52 is mounted on the bearing housing 53 through a bearing. The first sprocket 54 is mounted on the extended end of the output shaft, and the second sprocket 55 is mounted on the disc rake assembly 4. The first sprocket 54 and the second sprocket 55 are connected by a chain 56.

[0031] Specifically, the disc rake assembly 4 includes a square tube 41, two shafts 42, multiple disc rake blades 43, two fork supports 44, a fixing pin 45, and two connecting plates 46. The square tube 41 is connected to the two shafts 42 at both ends as a whole, and the two shafts 42 pass through two arc-shaped sliding grooves 221 respectively. The second sprocket 55 is installed on the shaft 42. The fork supports 44 pass through the square tube 41 and are rotatably connected to it. At the same time, the fork supports 44 and the square tube 41 are fixedly connected by the fixing pins 45. Multiple disc rake blades 43 are fitted onto the square tube 41 and are spaced apart. Each disc rake blade 43 is fixedly connected to the corresponding fork support 44. The two connecting plates 46 are respectively installed on the two shafts 42 by bearings, and the two connecting plates 46 are respectively connected to the two side plates 22 by fasteners.

[0032] Specifically, there are two disc rake blade assemblies 4, and correspondingly, there are two transmission and testing mechanisms 5 and two CCD sensors 6; each side plate 22 has two arc-shaped sliding grooves 221 distributed front and back; the two disc rake blade assemblies 4 are distributed at intervals front and back.

[0033] The testing method of this invention comprises the following steps:

[0034] (1) The distance between the mounting plate 1 and the support frame 2 is adjusted by the worm gear 31 and the rack 32 to achieve contact between the disc rake blade 43 and the soil;

[0035] (2) Adjust the position of shaft 42 and arc-shaped slide 221 to change the vertical and horizontal distance between the front and rear shafts 42;

[0036] (3) By setting the position of the fork frame 44 and the fixing pin 45 on the square tube 41, the soil inclination angle of the disc rake blade 43 is changed;

[0037] (4) The tractor pulls the support 7 to drive the whole to move in the field. The rotating speed of the motor 51 at the front and rear ends of the support plate 21 is set. The rotating speed of the disc harrow blade 43 is calculated through the gear ratio of the first sprocket 54 and the second sprocket 55. The torque of the front and rear disc harrow blades 43 in the rotating and moving process in the soil is collected. The CCD sensor 6 records the adhesion and accumulation process of the soil on the surface of the disc harrow blade 43, the adhesion and accumulation time, and the adhesion and accumulation position.

[0038] (5) After the test is completed, the disc harrow blade 43 is moved out of the soil through the worm gear 31 and the rack 32. The adhesion and accumulation of the soil on the surface of the disc harrow blade 43 is observed, and the mass of the soil adhered and accumulated on the disc harrow blade 43 is measured by using a balance.

[0039] Example 2:

[0040] As shown in Figure 1 , 3 , 4, the difference between this embodiment and example 1 is that the support 7 and the wheel 8 are replaced by the soil tank 9 and the sliding rail 10. The sliding rail 10 is fixed on the top of the soil tank 9. The mounting plate 1 is in sliding connection with the sliding rail 10.

[0041] The test method of the present application has the following steps:

[0042] (1) According to the soil characteristic parameters in the field, such as water content and penetration strength, the soil in the soil tank 9 is treated to be similar to the soil characteristic parameters in the field.

[0043] (2) The distance between the mounting plate 1 and the support frame 2 is adjusted through the worm gear 31 and the rack 32 to realize the contact between the disc harrow blade 43 and the soil.

[0044] (3) The sliding speed on the sliding rail 10 is set. The test scheme prepared by combining the test optimization design method is adjusted. The positions of the shaft 42 and the arc-shaped sliding groove 221 are adjusted to change the vertical and horizontal distances between the front and rear shafts 42.

[0045] (4) The positions of the fork frame 44 and the fixed pin 45 in the square tube 41 are set to change the soil entering angle of the disc harrow blade 43.

[0046] (5) The rotating speed of the motor 51 at the front and rear ends of the support plate 21 is set. The rotating speed of the disc harrow shaft 43 is calculated through the gear ratio of the first sprocket 54 and the second sprocket 55.

[0047] (6) The disc harrow blade 43 in situ performance test device is driven to move on the sliding rail 10. The torque of the front and rear disc harrow blades 43 in the rotating and moving process in the soil is collected. The CCD sensor 6 records the adhesion and accumulation process of the soil on the surface of the disc harrow blade 43, the adhesion and accumulation time, and the adhesion and accumulation position.

[0048] (7) After the test is finished, the disc harrow blade 43 is moved out of the soil by the worm wheel 31 and the rack 32, the soil adhesion and accumulation on the surface of the disc harrow blade 43 is observed, and the mass of the soil adhesion and accumulation on the disc harrow blade 43 is measured by a balance.

[0049] Embodiment 3:

[0050] The difference between this embodiment and Embodiment 1 or Embodiment 2 is that the disc harrow blade 43 is replaced by a deep scarifier or a rotary tiller.

[0051] The embodiments in the specification are described in a progressive manner, and each embodiment focuses on the difference from other embodiments. The same or similar parts between the embodiments can be referred to each other. For the device disclosed in the embodiments, since it corresponds to the method disclosed in the embodiments, the description is relatively simple, and the relevant part can be referred to the method part.

[0052] The above description of the disclosed embodiments enables those skilled in the art to carry out or use the present application. Various modifications to the embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A device for in-situ performance testing of disc rake blades, characterized in that, The device includes a mounting plate, a support frame, a lifting mechanism, a disc rake assembly, a transmission and testing mechanism, and a CCD sensor. The mounting plate is connected to the support frame below it via the lifting mechanism. The disc rake assembly is rotatably connected to the support frame. The transmission and testing mechanism is mounted on the support frame and is drively connected to the disc rake assembly. The CCD sensor is mounted on the support frame and aligned with the disc rake assembly.

2. The in-situ performance testing device for a disc rake blade according to claim 1, characterized in that, The support frame includes a support plate and two side plates, the support plate being integrally connected to the two side plates on both sides; each side plate has an arc-shaped groove; the mounting plate is connected to the support plate via the lifting mechanism; both ends of the disc rake assembly are rotatably connected to the two side plates respectively and extend out of the arc-shaped groove; the transmission and testing mechanism is mounted on the support plate; the CCD sensor is mounted on the side plate.

3. The in-situ performance testing device for a disc rake blade according to claim 2, characterized in that, The lifting mechanism includes a worm gear, a rack, and multiple guide rods. The worm gear is mounted on the mounting plate via a mounting base. The bottom end of the rack is mounted on the support plate via a fixed base, and the top end of the rack passes through the mounting plate and meshes with the worm gear. The multiple guide rods all vertically pass through the mounting plate, and each guide rod is connected to the mounting plate via a linear bearing.

4. The in-situ performance testing device for a disc rake blade according to claim 2, characterized in that, The transmission and testing mechanism includes a motor, a torque sensor, a bearing housing, a first sprocket, a second sprocket, and a chain. The motor and the bearing housing are both mounted on the support plate and are located on the same horizontal line. The input shaft of the torque sensor is connected to the motor, and the output shaft of the torque sensor is mounted on the bearing housing via a bearing. The first sprocket is mounted on the extended end of the output shaft, and the second sprocket is mounted on the disc rake assembly. The first sprocket and the second sprocket are connected by the chain drive.

5. The in-situ performance testing device for a disc rake blade according to claim 4, characterized in that, The disc rake assembly includes a square tube, two shafts, multiple disc rake blades, two fork supports, a fixing pin, and two connecting plates. The square tube is integrally connected to the two shafts at both ends, and the two shafts pass through two arc-shaped grooves respectively. The second sprocket is mounted on the shaft. The fork supports pass through the square tube and are rotatably connected to it, while the fork supports are fixedly connected to the square tube by the fixing pin. The multiple disc rake blades are fitted onto the square tube and spaced apart, and each disc rake blade is fixedly connected to the corresponding fork support. The two connecting plates are respectively mounted on the two shafts by bearings, and the two connecting plates are respectively connected to the two side plates by fasteners.

6. The in-situ performance testing device for a disc rake blade according to claim 2, characterized in that, The number of disc rake blade assemblies is two, and correspondingly, the number of transmission and testing mechanisms and the number of CCD sensors are also two; each side plate has two arc-shaped sliding grooves distributed front and back; the two disc rake blade assemblies are distributed at intervals front and back.

7. The in-situ performance testing device for a disc rake blade according to claim 5, characterized in that, The disc harrow blades are replaced with a deep loosening shovel or rotary tiller blades.

8. The in-situ performance testing device for a disc rake blade according to any one of claims 1-7, characterized in that, The in-situ performance testing device for a disc rake also includes a soil trough and a slide rail, with the slide rail fixed to the top of the soil trough; the mounting plate is slidably connected to the slide rail.

9. A disc rake blade in-situ performance testing device according to any one of claims 1-7, characterized in that, The in-situ performance testing device for a disc rake also includes a bracket and wheels. The top of the bracket is fixedly connected to the mounting plate, and the wheels are installed at the bottom of the bracket.

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