CN216410966U

CN216410966U - Cutting knife abrasion corrosion test bed

Info

Publication number: CN216410966U
Application number: CN202122928209.2U
Authority: CN
Inventors: 宋月鹏; 吴昆�; 柏春浩; 韩翔; 任龙龙; 张国良
Original assignee: Shandong Agricultural University
Current assignee: Shandong Agricultural University
Priority date: 2021-11-26
Filing date: 2021-11-26
Publication date: 2022-04-29
Anticipated expiration: 2031-11-26

Abstract

The utility model relates to a cutting knife abrasion corrosion test bed which comprises a box body, a rotating shaft and a driving device, wherein the rotating shaft is rotatably connected with the box body, the driving device is used for driving the rotating shaft to rotate, a cutting knife positioned in the box body is arranged on the rotating shaft, a stalk inlet and a nozzle are arranged on the box body, one end of the nozzle is communicated with a stalk juice corrosion agent imitating supply device, and the other end of the nozzle extends into the box body. The stalk juice imitation corrosive agent is sprayed into the box body through the nozzle to simulate the pH environment during actual stalk cutting, and the cutter is quickly worn in a rotary cutting mode, so that the cost for developing a field test is reduced, and the research efficiency of the wear characteristic of the cutter is improved.

Description

Cutting knife abrasion corrosion test bed

Technical Field

The utility model relates to the technical field of cutter abrasion tests, in particular to a test bed for simulating an actual stalk cutting pH value environment and realizing rapid cutter abrasion, and particularly relates to a cutter abrasion corrosion test bed.

Background

Crop stalks are rich biomass and feed resources in an agricultural production system, and the comprehensive utilization of the stalk resources is increasingly emphasized under the background of developing circular economy. The stalk cutting operation is not only a prerequisite condition for fully utilizing stalk resources, but also an important process of agricultural harvest. Therefore, the mechanical level and the working efficiency of the stalk cutting are improved, and the method has practical significance for leading the green cycle development of agriculture and promoting the high yield and harvest of agriculture. The cutting knife is a core part of the harvesting machine for harvesting operation, and the working performance of the cutting knife directly influences the working reliability of the whole machine. In the actual cutting operation, the frequent friction and collision of the stalks and the cutting knife and the corrosion of stalk juice aggravate the abrasion consumption of the cutting knife. In the prior art, the research on the wear resistance of the cutting knife is mainly based on a field cutting test, the research cost is very high, and the efficiency is low.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model provides the cutting knife abrasion corrosion test bed which can simulate the actual cutting working condition, reduce the research cost and improve the efficiency.

The utility model is realized through the following technical scheme, and provides a cutting knife abrasion corrosion test bed which comprises a box body, a rotating shaft and a driving device, wherein the rotating shaft is rotatably connected with the box body, the driving device is used for driving the rotating shaft to rotate, the cutting knife positioned in the box body is arranged on the rotating shaft, a stalk placing opening and a nozzle are arranged on the box body, one end of the nozzle is communicated with a stalk juice corrosive agent imitating supply device, and the other end of the nozzle extends into the box body.

This scheme is when using, puts into the mouth through the stem stalk and puts into the box with the stem stalk, spout into imitative stem stalk juice corrosive agent in to the box through the nozzle, and the pH valve threshold value when making the box is unanimous with the actual cutting operation drives the axis of rotation through drive arrangement and rotates to make the cutting knife rotatory, form the cutting knife wearing and tearing to the stem stalk, realize simulating the cutting knife wearing and tearing that the stem stalk cutting process leads to.

As optimization, a vibrating table is arranged below the box body, and the box body is fixedly connected with the vibrating table. After the cutting knife cuts the stalks, pits are easily generated to enable the cutting knife to idle, the vibration table is utilized to drive the box body to vibrate in the optimized scheme, the stalks are closely and uniformly distributed in the box body, and the abrasion effect on the cutting knife is improved.

As the optimization, the box inner side wall is equipped with the pH valve sensor, pH valve sensor electric connection control system, control system and drive arrangement, imitative stem stalk juice corrosive agent feeding device electric connection. This optimization scheme passes through the pH valve in the pH valve sensor detection box, and when the pH valve threshold in the box reached the setting value, control system control imitated stem stalk juice corrosive agent feeding device stop work to start drive arrangement cuts the operation, has improved test efficiency and automatic level.

Preferably, the box body comprises a cylindrical middle shell and side covers fixedly connected to two ends of the middle shell respectively, and at least one side cover is fixedly connected with the middle shell through a bolt. This optimization scheme sets up middle shell to cylindric, is convenient for improve the homogeneity of cutting the stem stalk, through passing through bolt and middle shell rigid coupling with at least one side cap, conveniently pulls down the side cap and overhauls, also makes things convenient for the dismantlement and the installation of cutting knife simultaneously.

As optimization, the stalk putting-in opening is positioned at the top of the box body, and a top cover matched with the stalk putting-in opening is hinged on the box body. This optimization scheme is through setting up the top cap, prevents that dust and piece that the cutting in-process produced from scurrying out, puts into the setting of mouth at the box top with the stem stalk, makes things convenient for the input of stem stalk.

As optimization, a stalk discharge port is formed in the bottom of the box body, a bottom door matched with the stalk discharge port is hinged to the bottom of the box body through a hinge shaft, a telescopic mechanism is arranged below the bottom door, one end of the telescopic mechanism is hinged to the box body, the other end of the telescopic mechanism is hinged to the bottom door, and a hinge point between the telescopic mechanism and the bottom door is located on the front side of the hinge shaft. This optimization scheme is convenient for pour the garrulous strip of abandonment stem stalk after the cutting out through setting up the stem stalk and putting the export, realizes opening and closing of end door through telescopic machanism, simple structure, convenient operation moreover.

Preferably, the straw juice corrosive agent imitation supply device comprises a spray pressurizer and a guide pipe, and a liquid outlet of the spray pressurizer is communicated with the nozzle through the guide pipe. According to the optimized scheme, the spraying supercharger is arranged, so that the spraying effect of the nozzle is improved, and the consistency of the pH value in the box body is improved.

The scheme also provides a test method using the cutting knife abrasion corrosion test bed, which comprises the following steps:

1. the method comprises the following steps of putting stalks into a box body, spraying the stalk-imitating juice corrosive agent into the box body through a nozzle, stopping spraying the stalk-imitating juice corrosive agent when a pH value threshold value detected by a pH value sensor is consistent with the pH value of an actual cutting operation environment, starting a motor to drive a cutting knife to rotate, and repeatedly cutting the cutting knife into the stalks to realize rapid abrasion;

2. the motor is regulated through a control system, so that the rotating speed of the cutting knife is changed, and the abrasion rate of the cutting knife is adjusted;

3. in the cutting process of the stalks, the stalks are thrown out to form pits, and the stalks are densely distributed in the box body by adjusting the vibration frequency of the vibration table;

4. after cutting, the bottom door is opened, and the stalks are discharged.

The utility model has the beneficial effects that: spout into imitative stalk juice corrosive agent to the box through the nozzle to the pH valve environment when simulation actual stalk cutting, and realize the quick wearing and tearing of cutting knife with the mode of rotatory cutting, reduced the cost of developing the field test, improved the research efficiency of cutting knife wear characteristic.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic structural diagram of a case;

FIG. 3 is a schematic view of a nozzle configuration;

FIG. 4 is a schematic structural diagram of a driving device;

FIG. 5 is a schematic view of a bottom door;

FIG. 6 is a schematic side cover structure;

shown in the figure:

1. the device comprises a driving belt wheel, a 2V-shaped belt, a 3 vibrating table, a 4 driven belt wheel, a 5 rotating shaft, a 6 box body, a 7 rod piece, a 8 cutting knife, a 9 right end side cover, a 10 belt seat bearing, a 11 top cover, a 12 spraying supercharger, a 13 guide pipe, a 14 nozzle, a 15 frame, a 16 control table, a 17 motor, a 18 bottom door, a 19 telescopic mechanism, a 20 pH value sensor.

Detailed Description

In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art, that the present invention may be practiced without one or more of these specific details. In other instances, well-known features have not been described in order to avoid obscuring the utility model.

In the following description, for the purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The preferred embodiments of the present invention are described in detail below.

The cutting knife abrasion corrosion test bed of this embodiment can simulate the cutting knife wearing and tearing that the stalk cutting process leads to, drives the cutting knife through the motor and rotates, puts into the stalk branch in the box to spout imitative stalk juice corrosive agent, start the test bed, carry out the quick wearing and tearing of cutting knife. After the stem branches are cut and crushed, the electric pull rod can be controlled to open the bottom door, waste stem branches are poured out, and new stem branches are added through the top of the box body. The embodiment can realize the rapid abrasion of the cutting knife in a certain pH value environment so as to effectively detect the abrasion resistance of the cutting knife.

The specific structure is as shown in fig. 1, and the cutting knife abrasion corrosion test bed comprises a frame 15, a control console 16, a box body 6, a rotating shaft 5 which is rotatably connected with the box body, and a driving device which drives the rotating shaft to rotate.

The box of this embodiment includes cylindric middle shell to and seal the side cap of rigid coupling in middle shell left and right both ends respectively, middle shell and the coaxial setting of axis of rotation, the side cap 9 of right-hand member passes through bolt and middle shell rigid coupling, and the axis of rotation passes the side cap of left end, installs the pedestal bearing 10 that supports the axis of rotation on the box.

The driving device comprises a motor 17 fixedly arranged on the rack, a driving belt wheel 1 arranged on an output shaft of the motor, and a driven belt wheel 4 arranged at the left end of the rotating shaft, wherein the diameter of the driving belt wheel is smaller than that of the driven belt wheel, and the driving belt wheel and the driven belt wheel are in transmission connection through a V-shaped belt 2. The motor 17 of the embodiment is a three-phase asynchronous motor, the motor can be regulated by a control system, and the rotating speed of the cutting knife is changed by controlling the rotating speed of the motor, so that different cutting wear rates of the cutting knife are realized.

Install a plurality of cutting knives 8 that are located the box in the axis of rotation through member 7, it is concrete, member 7 is two sets of altogether, along axis of rotation axial distribution, the quantity of member is three in every group member, and three member in same group along circumference evenly distributed, the one end and the axis of rotation rigid coupling of member, the other end at the member is installed through the round pin axle is articulated to the cutting knife, the cutting knife hole can be around the round pin axle rotation. In the working process, the motor drives the rotating shaft to rotate through belt transmission, so as to drive the rod piece and the cutting knife to rotate, the rotating cutting knife cuts the stem branches, and the cutting depth of the cutting knife is changed by adjusting the thickness of the stem branches.

The box top has been seted up the stem stalk and has been put into the mouth, and articulated on the box have put into the top cap 11 of mouth adaptation with the stem stalk, open the top cap before the cutting, put into the mouth with the stem stalk and put into the box, then put down the top cap, utilize the top cap to seal the stem stalk during the cutting and put into the mouth to dust and piece that the cutting produced are prevented from collapsing out, guarantee experimental safety.

The middle shell side wall of the box body is connected with a plurality of nozzles 14 through threads, one end of each nozzle is communicated with the straw juice corrosion agent imitating supply device, and the other end of each nozzle extends into the box body. Imitative stalk juice corrosive agent feeding device includes spraying booster 12 and pipe 13, and the liquid storage cylinder of spraying booster is used for holding imitative stalk juice corrosive agent, and the liquid outlet of spraying booster passes through pipe 13 and nozzle 14 intercommunication. The utility model discloses a straw juice corrosion agent spraying device, including shell, box, spraying booster, box, and the preceding both sides of middle shell are equipped with two nozzles that distribute along circumferential surface normal direction respectively, and the nozzle of homonymy communicates with the both ends of same pipe respectively, during the use, adds suitable amount of imitative straw juice corrosion agent in the spraying booster, and during imitative straw juice corrosion agent sprayed into the pipe after the pressurization, utilized the reposition of redundant personnel of pipe to get into two nozzles, imitative straw juice corrosion agent spout the box through the nozzle with the spraying form in, simulate the pH valve environment among the actual cutting process. The inner wall of the box body is provided with an anticorrosive coating to prevent the box body from being corroded.

The box below is equipped with shaking table 3, and box and shaking table pass through screw fixed connection, and shaking table and frame are independent each other, and the frame passes through the bolt installation to be fixed subaerial, and the shaking table is also fixed subaerial. Utilize the vibration of shaking table, drive the box vibration, make the stem stalk in the box distribute more evenly, avoid appearing the pit.

The box inside wall is equipped with pH valve sensor 20, pH valve sensor electric connection control system, control system and drive arrangement, imitative stem stalk juice corrosive agent feeding device electric connection. The pH value sensor 20 of this embodiment is installed at the side cap inner wall of right-hand member, and pH value sensor 20 is less than the axis of rotation in the direction of height, makes the position of pH value check point be located the high within range that the stem stalk was placed, has improved the accuracy of simulation. The control system is mounted in a console 16, which is fixedly mounted on the frame. The pH value sensor detects the pH value of the straw branches and the box body environment, data are displayed on the console, after the preset pH value is reached, the straw juice corrosion agent is stopped to be sprayed, and the motor is started to carry out cutting operation.

The bottom of box has been seted up the stem stalk and has been put the export, and the bottom of the box articulates through the hinge has puts the end door 18 of export adaptation with the stem stalk, and the end door below is equipped with telescopic machanism 19, and telescopic machanism's one end is articulated with the box, and telescopic machanism's the other end is articulated with the end door, and the pin joint between telescopic machanism and the end door is located the front side of hinge. Preferably, the telescopic mechanism 19 of the present embodiment is an electric pull rod. The bottom door is opened by controlling the electric pull rod, waste broken stalks are poured out, and new stalks are added to continue to carry out the abrasion test.

A test method using the cutting knife abrasion corrosion test bed of the embodiment comprises the following steps:

1. the top cover is opened, the stalks are placed into the box body through the stalk placing opening, the stalk imitation juice corrosive agent is sprayed into the box body through the nozzle, the pH value threshold value in the box body is detected by the pH value sensor, when the pH value threshold value detected by the pH value sensor is consistent with the pH value of the actual cutting operation environment, the spraying of the stalk imitation juice corrosive agent is stopped, the motor is started, the cutting knife is driven to rotate, and the cutting knife repeatedly cuts into the stalks to realize rapid abrasion;

3. in the process of cutting the stalks, the cutting knives are frequently cut into the same position, and the stalks are thrown out to form pits, so that the cutting knives idle, and in order to avoid the idle phenomenon, the method ensures that the stalks are densely distributed in the box body by adjusting the vibration frequency of the vibration table;

4. after cutting, under the static state of the test bed, the bottom door is opened, the stems are discharged, new crop stems are put in, and the abrasion corrosion test is continuously carried out.

The cutting knife abrasion corrosion test bed can accelerate the simulation of the change of the abrasion condition of the cutting knife in the process of cutting crop stalks by the cutting knife under a certain pH value environment so as to effectively detect the abrasion resistance of the cutting knife and improve the research efficiency of a laboratory, and meanwhile, the cutting knife abrasion corrosion test bed can simulate the environment and the process of actual cutting operation, thereby reducing the cost of field tests, improving the detection efficiency of the abrasion resistance and the corrosion resistance of the cutting knife, and having good engineering innovation and popularization and application values.

Of course, the above description is not limited to the above examples, and the undescribed technical features of the present invention can be implemented by or using the prior art, and will not be described herein again; the above embodiments and drawings are only for illustrating the technical solutions of the present invention and not for limiting the present invention, and the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that changes, modifications, additions or substitutions within the spirit and scope of the present invention may be made by those skilled in the art without departing from the spirit of the present invention, and shall also fall within the scope of the claims of the present invention.

Claims

1. The utility model provides a cutting knife wearing and tearing corrosion test platform which characterized in that: including box (6), rotate axis of rotation (5) of being connected with the box, and drive axis of rotation pivoted drive arrangement, install cutting knife (8) that are located the box in the axis of rotation, be equipped with the stem stalk on the box and put into mouth and nozzle (14), stem stalk juice corrosive agent feeding device is imitated to the one end intercommunication of nozzle, and the other end of nozzle extends to in the box.

2. The cutting knife wear corrosion test stand according to claim 1, characterized in that: a vibrating table (3) is arranged below the box body, and the box body is fixedly connected with the vibrating table.

3. The cutting knife wear corrosion test stand according to claim 1, characterized in that: the box inside wall is equipped with pH valve sensor (20), pH valve sensor electric connection control system, control system and drive arrangement, imitative stem stalk juice corrosive agent feeding device electric connection.

4. The cutting knife wear corrosion test stand according to claim 1, characterized in that: the box body comprises a cylindrical middle shell and side covers fixedly connected to two ends of the middle shell respectively, and at least one side cover is fixedly connected with the middle shell through a bolt.

5. The cutting knife wear corrosion test stand according to claim 1, characterized in that: the stalk placing opening is positioned at the top of the box body, and a top cover (11) matched with the stalk placing opening is hinged on the box body.

6. The cutting knife wear corrosion test stand according to claim 5, characterized in that: the bottom of box has been seted up the stem stalk and has been put the export, and the bottom of the box articulates through the hinge has and puts end door (18) of export adaptation with the stem stalk, and end door below is equipped with telescopic machanism (19), and telescopic machanism's one end is articulated with the box, and telescopic machanism's the other end is articulated with the end door, and the pin joint between telescopic machanism and the end door is located the front side of hinge.

7. The cutting knife wear corrosion test stand according to claim 1, characterized in that: the stalk juice imitation corrosive agent supply device comprises a spray pressurizer (12) and a guide pipe (13), wherein a liquid outlet of the spray pressurizer is communicated with a nozzle (14) through the guide pipe (13).