CN110672255A - Multi-adaptive working load change detection device and detection method - Google Patents
Multi-adaptive working load change detection device and detection method Download PDFInfo
- Publication number
- CN110672255A CN110672255A CN201911011209.7A CN201911011209A CN110672255A CN 110672255 A CN110672255 A CN 110672255A CN 201911011209 A CN201911011209 A CN 201911011209A CN 110672255 A CN110672255 A CN 110672255A
- Authority
- CN
- China
- Prior art keywords
- hydraulic jack
- hydraulic
- pressure
- oil
- tension wheel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L11/00—Measuring steady or quasi-steady pressure of a fluid or a fluent solid material by means not provided for in group G01L7/00 or G01L9/00
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M99/00—Subject matter not provided for in other groups of this subclass
Abstract
The invention relates to a multi-adaptability working load change detection device and a detection method, wherein the detection device comprises a hydraulic jack and a tension wheel, the hydraulic jack is fixedly arranged, the stretching direction of the hydraulic jack is consistent with the tensioning direction of the tension wheel, the tension wheel is rigidly connected with a piston of the hydraulic jack, an oil inlet of the hydraulic jack is communicated with a hydraulic oil supply cylinder through a pipeline, and a pressure sensor and/or a pressure gauge are/is arranged on the pipeline. According to the invention, the change of the actual load of the machine is converted into the pressure change of the hydraulic system which is easy to collect through the tension wheel mechanism, so that the defect of mechanical structure when the traditional torque sensor collects is avoided, and the practicability of the detection device is improved; the pressure sensor and the Hall sensor can be used for simultaneously acquiring the pressure of the hydraulic system and the rotating speed of the tension wheel, so that the change curve can be conveniently displayed in real time through an upper computer; divide into two parts with the oil circuit through the stop valve, reduce the oil body volume of compressed, make pressure variation more obvious, guaranteed the precision that load detected.
Description
Technical Field
The invention relates to the technical field of load detection, in particular to a load detection device suitable for a belt-driven forage crop conditioning device, a smashing device and a combine harvester, and particularly relates to a multi-adaptability working load change detection device and a detection method.
Background
When the forage crop combine harvester operates in the field, the feeding speed is matched with the advancing speed of the combine harvester, and the operating speeds of operating parts with different functions such as conveying, crushing, conditioning, throwing and the like in the combine harvester are also matched, so that a load change detection device is needed, the sizes of operating loads of different parts are detected in real time, and data are uploaded to a control system in time. When the load of a certain part is detected to be suddenly increased or decreased, the control system of the combined harvester sends instructions to each operation part, the working speed of the corresponding part is decreased or increased, and the stable and efficient operation of the combined harvester is guaranteed.
However, the existing load change detection device mostly adopts a torque sensor to collect the torque of the driving shaft, and has a complex structure and poor practicability and adaptability.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a multi-adaptability working load change detection device and a detection method, which are suitable for a belt-driven forage crop conditioning device or a smashing device and a combine harvester, and reflect the relative size of the working load by measuring the tension degree of a belt and finally reflect the relative size of the working load by the pressure change in a hydraulic system.
The invention is realized by the following technical scheme, and provides a multi-adaptability working load change detection device, which comprises a hydraulic jack and a tension wheel, wherein the hydraulic jack is fixedly arranged in a stretching direction consistent with the tension direction of the tension wheel, the tension wheel is rigidly connected with a piston of the hydraulic jack, an oil inlet of the hydraulic jack is communicated with a hydraulic oil supply cylinder through a pipeline, and a pressure sensor and/or a pressure gauge are/is arranged on the pipeline.
When the hydraulic system is used, the hydraulic oil supply cylinder supplies oil to the hydraulic jack, so that the piston of the hydraulic jack drives the tensioning wheel to move along the tensioning direction, after the equipment runs, the pressure of the tensioning wheel is applied to the hydraulic oil in the pipeline by the driving belt under the action of a load, and the pressure of the hydraulic oil can be obtained from a pressure sensor or a pressure gauge, so that the relative size of a working load is reflected by measuring the tension of the belt, and finally the load is reflected by the pressure change in the hydraulic system; the piston of the hydraulic jack is rigidly connected with the tension pulley, so that the pressure of a belt borne by the tension pulley can be transmitted to the piston of the hydraulic jack in real time.
As optimization, the pipeline is further provided with a stop valve, and the pressure sensor and the pressure gauge are located between the stop valve and the hydraulic jack. Through the installation stop valve on this optimization scheme, drive the take-up pulley tensioning at hydraulic jack and target in place the back, close the stop valve to reduce the oil body volume of compressed, make pressure variation more obvious, guaranteed the precision that load detected.
Preferably, the hydraulic jack is vertically placed in the fixed seat, and a positioning bolt which is horizontally jacked to the hydraulic jack is connected to the side wall of the fixed seat in a threaded mode. This optimization scheme is through setting up the fixing base, more makes things convenient for placing of hydraulic jack, carries out horizontal fixed to hydraulic jack through setting up positioning bolt, avoids hydraulic jack to shift.
Preferably, the fixed seat is fixedly connected with a sleeve, and a connecting shaft pressed on a piston of the hydraulic jack is vertically and slidably connected in the sleeve; the tensioning wheel is installed on the supporting plate through a bearing, and the supporting plate and the connecting shaft are relatively fixed in the tensioning direction. According to the optimized scheme, the sleeve is arranged to provide guidance for movement of the connecting shaft, so that the reaction force of the tension force is transmitted along the axial direction of the hydraulic jack, and the precision of load detection is further improved; the tensioning wheel is installed in the supporting plate through a bearing, and friction between the transmission belt and the tensioning wheel is reduced.
Preferably, the connecting shaft upwards penetrates through the connecting plate, and a shaft end retainer ring positioned on the top surface of the connecting plate is sleeved on the connecting shaft. In the optimized scheme, the connecting shaft and the connecting plate realize the tensioning direction, namely axial relative fixation, through the shaft end check ring, the structure is simple, and the installation and the disassembly are convenient.
Preferably, an induction magnet is fixedly arranged on the circular surface of the wheel shaft of the tensioning wheel, and a hall sensor corresponding to the induction magnet is fixedly arranged on the supporting plate. This optimization scheme is through setting up induction magnet and hall sensor for the take-up pulley is every to change the round, and hall sensor senses magnet once, and the convenience is to the collection of take-up pulley rotational speed.
Preferably, the connecting shaft is fixedly provided with a guide key extending along the axial direction, and the inner wall of the sleeve is provided with a guide key groove matched with the guide key. This optimization scheme realizes the vertical removal of connecting axle through setting up direction key and direction keyway, and the direction effect is better, simple structure moreover, and the direction key can be installed on the connecting axle through countersunk screw.
The scheme also provides a detection method using the detection device, which comprises the following steps:
a. contacting the tensioning wheel with the transmission belt, and enabling the tensioning wheel to be located between the hydraulic jack and the transmission belt;
b. the hydraulic oil supply cylinder supplies oil to the interior of the hydraulic jack, so that the piston of the hydraulic jack drives the tension wheel to move along the tensioning direction, and the transmission belt is tensioned;
c. after the tension degree of the transmission belt is adjusted, the stop valve is closed, and when the indication number of the pressure gauge is not changed, the machine is started to carry out load detection;
d. before the height of the tension wheel is reduced, the hydraulic oil supply oil cylinder is firstly decompressed, then the stop valve is opened to reduce the pressure in the whole oil way, and the tension wheel moves downwards under the pressure of the transmission belt.
The invention has the beneficial effects that: the change of the actual load of the machine is converted into the pressure change of a hydraulic system which is easy to collect through the tension wheel mechanism, so that the defect of the mechanical structure when the traditional torque sensor collects is avoided, and the practicability of the detection device is improved; the pressure sensor and the Hall sensor can be used for simultaneously acquiring the pressure of the hydraulic system and the rotating speed of the tension wheel, so that the change curve can be conveniently displayed in real time by the upper computer, an operator can conveniently observe the working condition of each component and take related measures in time; divide into two parts with the oil circuit through the stop valve, close the stop valve after take-up pulley height adjustment, reduce the oil body volume of compressed, make pressure variation more obvious, guaranteed the precision that load detected.
Drawings
FIG. 1 is a front view of a schematic of the present invention;
FIG. 2 is an isometric view of a schematic of the present invention;
FIG. 3 is a front view of a tensioner mounting structure;
FIG. 4 is a schematic view of the tensioner mounting structure with the sleeve removed;
FIG. 5 is an axial side view of a tensioner mounting structure;
FIG. 6 is a schematic axial view of the tensioner mounting structure with the retaining bracket removed;
shown in the figure:
1. the hydraulic oil supply device comprises a bearing, 2, a wheel shaft, 3, a tension wheel, 4, an induction magnet, 5, a shaft end retainer ring, 6, a support plate, 7, a Hall sensor, 8, a sleeve, 9, a top plate, 10, a vertical plate, 11, a bottom plate, 12, a hydraulic jack, 13, a spacer bush, 14, a connecting shaft, 15, a guide key, 16, a pressure gauge, 17, a three-way pipe, 18, a pressure sensor, 19, a stop valve, 20, a pipeline, 21 and a hydraulic oil supply oil cylinder.
Detailed Description
In order to make those skilled in the art better understand the technical solutions in the present application, 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, and it is obvious that the described embodiments are only system embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application. The related art not described below can be used or used as a reference for the prior art.
As shown in fig. 1, the apparatus for detecting a change in a multi-adaptive working load includes a hydraulic jack 12 fixedly disposed with a stretching direction consistent with a tensioning direction of a tensioning wheel, and a tensioning wheel 3 rigidly connected to a piston of the hydraulic jack 12 along the tensioning direction.
The tensioning wheel 3 is mounted on a supporting plate 6 through a bearing 1, the supporting plate 6 and the connecting shaft 14 are relatively fixed in the tensioning direction, and the bearing 1 is a bearing with a seat. In this embodiment, the connecting shaft 14 upwardly penetrates through the connecting plate 6, and the connecting shaft is sleeved with a shaft end retainer ring 5 positioned on the top surface of the connecting plate. 4 through holes with the diameter of 7mm and 1 through hole with the diameter of 15mm are formed in the supporting plate 6, the through holes with the diameter of 7mm are used for mounting the bearings with the seats, and the through holes with the diameter of 15mm are used for mounting the Hall sensors 7; in addition, 1 through hole with a groove and a diameter of 25mm is arranged for installing the connecting shaft 14, and the supporting plate and the connecting shaft are connected through a shaft end retainer ring 5 and a key.
The shaft 2 of take-up pulley is connected with the rolling bearing, sets up spacer 13 between take-up pulley and the rolling bearing, and has set firmly induction magnet 4 on the one end disc that the shaft wore out the rolling bearing, set firmly in the backup pad with the hall sensor 7 that induction magnet corresponds, induction magnet 4 is located hall sensor 7 top.
The hydraulic jack 12 is vertically placed in the fixed seat, and a positioning bolt which is horizontally jacked to the hydraulic jack is connected to the side wall of the fixed seat in a threaded mode. The fixing seat comprises a top plate 9, a vertical plate 10 and a bottom plate 11 which are welded together, a hydraulic jack 12 is covered in the fixing seat, a through hole for a piston of the hydraulic jack to pass through is formed in the top plate, a positioning bolt penetrates through the vertical plate and is limited through the positioning bolt, and the position of the jack is fixed.
A sleeve 8 is welded on the top surface of a top plate of the fixed seat, and a connecting shaft 14 pressed on a piston of the hydraulic jack is vertically connected in the sleeve 8 in a sliding manner; the bottom end of the connecting shaft 14 is provided with a counter bore with the diameter of 25mm and the depth of 6mm, three threaded through holes with the diameter of 3mm are uniformly distributed on the wall of the counter bore and used for installing a piston of the hydraulic jack 12, and the piston of the hydraulic jack 12 and the connecting shaft are tightly fixed through the counter bore and a jackscrew. The connecting shaft 14 penetrates through the sleeve 8, a guide key 15 extending along the axial direction is fixedly arranged on the connecting shaft, the guide key is fixedly connected with the connecting shaft through a countersunk screw, and a guide key groove matched with the guide key is formed in the inner wall of the sleeve.
An oil inlet of the hydraulic jack is communicated with a hydraulic oil supply cylinder 21 through a pipeline 20, the hydraulic oil supply cylinder 21 is a manual hydraulic pump, a pressure sensor 18 and a pressure gauge 16 are installed on the pipeline, and the pressure gauge 16 and the pressure sensor 18 are connected into an oil way through a three-way pipe 17. The hydraulic oil supply cylinder is a power source of the whole hydraulic system, and the extending length of the jack piston can be adjusted by supplying oil to the system through the operating lever, so that the height of the tensioning wheel is controlled. And a stop valve 19 is further arranged on the pipeline, and the pressure sensor and the pressure gauge are positioned between the stop valve 19 and the hydraulic jack 12. The stop valve can divide into two parts with the oil circuit, opens the stop valve during the pneumatic cylinder fuel feeding, closes the stop valve after take-up pulley height adjustment has been accomplished, reduces the oil body volume of compressed, makes pressure variation more obvious, has guaranteed the precision that load detected.
Before use, the stop valve is opened, the pressure release valve on the hydraulic cylinder is screwed down, the handle is operated to supply oil to the hydraulic jack, on one hand, the change of a pointer of the pressure gauge is observed, and the overlarge pressure is avoided; on the other hand, the belt tension was tested. When the tensioning degree is optimal, closing the stop valve, observing whether the indication number of the pressure gauge changes after stabilizing for a period of time, starting the machine if the indication number of the pressure gauge does not change, and opening an acquisition program to perform normal data acquisition; if the change happens, the steps are repeated until the adjustment is finished, and the final collection work is carried out.
The detection method using the detection device specifically comprises the following steps:
a. the tensioning wheel is contacted with the transmission belt, the tensioning wheel is positioned between the hydraulic jack and the transmission belt, the hydraulic jack is placed along the vertical direction, and the hydraulic jack is limited and fixed through a positioning bolt which is horizontally arranged;
b. the hydraulic oil supply cylinder supplies oil to the interior of the hydraulic jack, so that the piston of the hydraulic jack drives the tension wheel to move along the tensioning direction, and the transmission belt is tensioned;
c. after the tension degree of the transmission belt is adjusted, the stop valve is closed, the stop valve can divide an oil path into two parts so as to reduce the volume of a compressed oil body, when the indication of a pressure gauge is not changed, a machine is started to carry out load detection, and when the pressure value is too large or too small in the detection process, corresponding measures can be adopted to adjust the feeding amount; when the tension degree of the belt changes, the tension wheel is pushed to move downwards, hydraulic oil is compressed, the pressure in the oil way changes, and the pressure change is converted into a voltage signal through the pressure sensor to be output; the pressure gauge and the pressure sensor are arranged in an oil way through a three-way pipe, the pressure gauge can display the pressure in the system in real time, and the pressure sensor is connected with a PCI1710HG data acquisition card through a signal wire and acquires, displays and stores sensor data in real time by using a LabView program; an induction magnet is arranged on a wheel shaft of the tension pulley, the rotating speed of a main shaft can be acquired in real time through a Hall sensor, the linear speed of the belt can be obtained through calculation, and the parameter can provide reference for the working speed of a machine;
d. before the height of the tension wheel is reduced, the hydraulic oil supply oil cylinder is firstly decompressed, then the stop valve is opened to reduce the pressure in the whole oil way, and the tension wheel moves downwards under the pressure of the transmission belt.
The invention can detect the magnitude of the operation load and the magnitude of the operation speed by measuring the tension degree of the belt, reflecting the relative magnitude of the operation load and finally reflecting the change of the pressure in the hydraulic system, has small and exquisite integral structure, is suitable for various belt-driven operation parts, is simultaneously provided with the pressure sensor and the Hall sensor, can detect the magnitude of the operation load and the magnitude of the operation speed, can compare the parameters of the operation load, the operation speed, the feeding amount and the like in multiple dimensions, and really realizes the multi-adaptability of the detection device.
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 (8)
1. A kind of adaptable work load changes the checkout gear, characterized by that: the hydraulic lifting jack device is characterized by comprising a hydraulic jack (12) with the stretching direction and the tensioning direction of the tensioning wheel being consistent and fixedly arranged, and a tensioning wheel (3) rigidly connected with a piston of the hydraulic jack (12), wherein an oil inlet of the hydraulic jack is communicated with a hydraulic oil supply cylinder (21) through a pipeline (20), and a pressure sensor (18) and/or a pressure gauge (16) are/is installed on the pipeline.
2. The apparatus of claim 1, wherein: still install stop valve (19) on the pipeline, just pressure sensor, manometer be located between stop valve (19) and hydraulic jack (12).
3. The apparatus of claim 1, wherein: the hydraulic jack (12) is vertically placed in the fixed seat, and a positioning bolt which is horizontally jacked to the hydraulic jack is connected to the side wall of the fixed seat in a threaded mode.
4. A adaptable workload change detection device according to claim 3, characterized by: a sleeve (8) is fixedly connected to the fixed seat, and a connecting shaft (14) pressed on a piston of the hydraulic jack is vertically connected to the interior of the sleeve (8) in a sliding manner;
the tensioning wheel is installed on a supporting plate (6) through a bearing (1), and the supporting plate (6) and the connecting shaft (14) are relatively fixed in the tensioning direction.
5. The apparatus of claim 4, wherein the processor is further configured to: the connecting shaft (14) upwards penetrates through the connecting plate (6), and a shaft end check ring (5) located on the top surface of the connecting plate is sleeved on the connecting shaft.
6. The apparatus of claim 4, wherein the processor is further configured to: an induction magnet (4) is fixedly arranged on the circular surface of the wheel shaft (2) of the tensioning wheel, and a Hall sensor (7) corresponding to the induction magnet is fixedly arranged on the supporting plate.
7. The apparatus of claim 4, wherein the processor is further configured to: the connecting shaft is fixedly provided with a guide key (15) extending along the axial direction, and the inner wall of the sleeve is provided with a guide key groove matched with the guide key.
8. A method of testing using the test device of any one of claims 1 ~ 7, comprising the steps of:
a. contacting the tensioning wheel with the transmission belt, and enabling the tensioning wheel to be located between the hydraulic jack and the transmission belt;
b. the hydraulic oil supply cylinder supplies oil to the interior of the hydraulic jack, so that the piston of the hydraulic jack drives the tension wheel to move along the tensioning direction, and the transmission belt is tensioned;
c. after the tension degree of the transmission belt is adjusted, the stop valve is closed, and when the indication number of the pressure gauge is not changed, the machine is started to carry out load detection;
d. before the height of the tension wheel is reduced, the hydraulic oil supply oil cylinder is firstly decompressed, then the stop valve is opened to reduce the pressure in the whole oil way, and the tension wheel moves downwards under the pressure of the transmission belt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911011209.7A CN110672255A (en) | 2019-10-23 | 2019-10-23 | Multi-adaptive working load change detection device and detection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911011209.7A CN110672255A (en) | 2019-10-23 | 2019-10-23 | Multi-adaptive working load change detection device and detection method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110672255A true CN110672255A (en) | 2020-01-10 |
Family
ID=69083875
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911011209.7A Pending CN110672255A (en) | 2019-10-23 | 2019-10-23 | Multi-adaptive working load change detection device and detection method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110672255A (en) |
-
2019
- 2019-10-23 CN CN201911011209.7A patent/CN110672255A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106017888B (en) | A kind of semifloating axle shaft rotary bending fatigue bench test device | |
| CN210625921U (en) | Multi-adaptability working load change detection device | |
| CN204944839U (en) | Rolling bearing fatigue life testing table | |
| KR20170079822A (en) | Cylinder apparatus with fixing flange in which outer force sensing facility embedded | |
| CN103245581A (en) | Duplex piston ring-cylinder sleeve frictional wear test station | |
| KR20170004770A (en) | Vertical torque measurement apparatus for bearing | |
| CN100498277C (en) | Automatic adding and discharging carrier of sclerometer and measuring cell | |
| CN102809488B (en) | Loading mechanism of mute life testing machine of rolling bearing | |
| CN106442148B (en) | Brittleness detector for chain pin shaft | |
| CN216349418U (en) | Equipment capable of realizing automatic diameter adjustment and sealing detection of drum brake | |
| CN203479448U (en) | Torque testing machine | |
| CN110672255A (en) | Multi-adaptive working load change detection device and detection method | |
| CN109570984B (en) | Hydraulic bolt stretcher calibrator | |
| CN102809486A (en) | Driving mechanism of mute life testing machine of rolling bearing | |
| CN101968339B (en) | Automatic axial internal clearance measuring meter for tapered roller bearing of automobile gearbox | |
| CN207020013U (en) | Agricultural V bands fatigue tester | |
| CN217342393U (en) | Full-automatic detection device for slip torque of one-way clutch | |
| CN102288403B (en) | Tensioning wheel torque test device | |
| CN208450991U (en) | A kind of oil seal pressing device | |
| CN114618798A (en) | Full automatic checkout device of torque that one way clutch skids | |
| CN212409585U (en) | Adjustable measuring head for axial clearance detector | |
| CN212227949U (en) | Precision bearing axial clearance detection equipment | |
| CN105067454B (en) | Device and method for detecting tensile strength and compressive strength of concrete by in-situ shearing and splitting method | |
| CN103471759B (en) | Force moment testing machine | |
| CN209764324U (en) | Multifunctional static braking torque testing device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |