CN111706653A - Optical engine transmission belt tensioning adjusting device and adjusting method - Google Patents
Optical engine transmission belt tensioning adjusting device and adjusting method Download PDFInfo
- Publication number
- CN111706653A CN111706653A CN202010392513.7A CN202010392513A CN111706653A CN 111706653 A CN111706653 A CN 111706653A CN 202010392513 A CN202010392513 A CN 202010392513A CN 111706653 A CN111706653 A CN 111706653A
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- China
- Prior art keywords
- tension
- assembly
- idler wheel
- idler
- optical engine
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H7/00—Gearings for conveying rotary motion by endless flexible members
- F16H7/08—Means for varying tension of belts, ropes, or chains
- F16H7/10—Means for varying tension of belts, ropes, or chains by adjusting the axis of a pulley
- F16H7/12—Means for varying tension of belts, ropes, or chains by adjusting the axis of a pulley of an idle pulley
- F16H7/1254—Means for varying tension of belts, ropes, or chains by adjusting the axis of a pulley of an idle pulley without vibration damping means
- F16H7/1263—Means for varying tension of belts, ropes, or chains by adjusting the axis of a pulley of an idle pulley without vibration damping means where the axis of the pulley moves along a substantially straight path
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/04—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring tension in flexible members, e.g. ropes, cables, wires, threads, belts or bands
- G01L5/10—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring tension in flexible members, e.g. ropes, cables, wires, threads, belts or bands using electrical means
Abstract
The invention discloses an optical engine transmission belt tensioning adjusting device and an adjusting method, wherein the optical engine transmission belt tensioning adjusting device comprises a fixed idler wheel and a movable idler wheel assembly which are positioned outside an engine tensioning belt and are in close contact with the engine tensioning belt, and a driving assembly on a mounting seat pushes the movable idler wheel assembly to move towards one side of the fixed idler wheel; move and be equipped with tensile force detection assembly between idler subassembly and the engine tensioning area, be equipped with the control unit between tensile force detection assembly and the drive assembly, the control unit controls drive assembly according to the tensile force that tensile force detection assembly surveyed. Has the advantages that: the invention monitors the tension of the engine transmission belt in real time through the tension detection assembly, compares the tension with the set value of the control unit, and increases the tension of the engine tension belt by pushing the movable idler wheel assembly to move when the tension is smaller than the set value, thereby realizing the accurate automatic control of the tension, improving the accuracy of the optical engine experimental data and reducing the workload of operators.
Description
Technical Field
The invention relates to an engine transmission belt tensioning adjusting device and an adjusting method, in particular to an optical engine transmission belt tensioning adjusting device capable of automatically adjusting and an adjusting method, and belongs to the technical field of engine combustion research.
Background
The optical engine (optical engine) has wide application in the field of optical diagnosis of internal combustion engines, can cover all working processes of air intake, spraying, mixing, combustion and the like, and can research the air flow movement in a cylinder, the speed field of sprayed liquid drops, the diameter distribution of the liquid drops, the concentration distribution of mixed gas, flame propagation, the temperature field distribution of combustible gas in the cylinder and the generation of harmful emissions by various non-contact optical methods with high space-time resolution and high accuracy. The optical engine main body part comprises a frequency converter, a motor, a power assembly, a lengthened optical platform, a cylinder cover assembly and a signal and control system. The three-phase asynchronous motor provides power required by the system and is connected with a power assembly crankshaft. The rotating speed is set through the frequency converter, the motor drags the engine to run, and the open-loop control is realized by matching with a rotating speed sensor at the flywheel. The engine opens or closes the intake and exhaust valves through the rotation of the camshaft, the motion of the camshaft is transmitted through the gear, the transmission belt, the timing chain and the like by means of the power of the crankshaft source, the gear, the timing belt or the timing chain synchronizes the rotation of the camshaft and the crankshaft, and the intake and exhaust valves are ensured to be opened and closed at correct time in the operation of the engine, wherein the timing gear transmission has the advantages of light weight, low cost, low noise and the like.
The engine has the characteristics of large load, high rotating speed and high requirement on the control precision of the timing valve timing, and the durability and the noise of the engine need to be considered, so the requirement on the tension of the transmission belt is strict, and the tension applied by a tension mechanism and the like need to be accurately controlled. In the existing Chinese invention patent, for example, the invention patent with the application number of 201710466969, a tensioning device for an optical engine driving belt is provided. The idler wheel arranged on the moving plate is driven to move through the movement of the moving plate, and the position of the moving plate is locked through the bolt, so that the transmission belt of the optical engine can be adjusted, manual adjustment is needed, the tension of the transmission belt cannot be known, and accurate and automatic adjustment cannot be achieved only through sensory adjustment.
Disclosure of Invention
The purpose of the invention is as follows: aiming at the problems that the driving belt tensioning device in the prior art cannot accurately provide the required tensioning force of the driving belt and needs manual adjustment by experience, the invention provides an optical engine driving belt tensioning adjusting device and an adjusting method capable of automatically adjusting.
The technical scheme is as follows: an optical engine belt tension adjustment device comprising a fixed idler and a moving idler assembly located outside of and in intimate contact with an engine tension belt, the fixed idler and the moving idler assemblies being respectively mounted on a mounting block, the moving idler assembly being movable on the mounting block to one side of the fixed idler; the mounting seat is provided with a driving assembly, and the driving assembly pushes the movable idler wheel assembly to move towards one side of the fixed idler wheel; move and be equipped with tensile force detection assembly between idler subassembly and the engine tensioning area, be equipped with the control unit between tensile force detection assembly and the drive assembly, the control unit controls drive assembly according to the tensile force that tensile force detection assembly surveyed. The invention detects the tension of the current engine tension belt through the tension detection assembly, compares the detected tension with the set value of the control unit, and when the tension is smaller than the set value, the control unit controls the driving assembly to work, and the driving assembly pushes the movable idler wheel assembly to move so as to increase the tension of the engine tension belt, thereby realizing the accurate and automatic control of the tension.
Preferably, in order to realize smooth movement of the movable idler wheel assembly and realize accurate control, a convex guide groove is formed in the mounting seat, the movable idler wheel assembly comprises a movable idler wheel body, a movable idler wheel mounting shaft and a movable idler wheel mounting seat, the movable idler wheel body is mounted on the movable idler wheel mounting seat through the movable idler wheel mounting shaft, the cross section of the movable idler wheel mounting seat is of a convex structure, and the movable idler wheel mounting seat is inserted into the convex guide groove.
Preferably, in order to realize accurate detection of the tension, the tension detection assembly comprises a resistance strain gauge, a tubular structure brush holder, an electric brush and a charge amplifier, the resistance strain gauge is adhered to the circumferential surface of the movable idler wheel body, the tubular structure brush holder is installed inside the movable idler wheel body, the electric brush is fixed inside the tubular structure brush holder, a connecting hole is formed in the movable idler wheel body along the radial direction, and the resistance strain gauge is connected with the tubular structure brush holder through a connecting wire arranged in the connecting hole; the brushes are connected to a charge amplifier, which is connected to a control unit.
Preferably, in order to realize that drive assembly can accurate reliable promotion removal idler, drive assembly includes push pedal, driving motor, drive assembly, driving motor and drive assembly install respectively on the mount pad, driving motor passes through drive assembly drive push pedal and removes, the cross section of push pedal is installed in protruding type guide slot simultaneously for type structure and removal idler mount pad, the push pedal promotes the removal idler mount pad and removes.
Preferably, in order to realize the accurate and reliable control of the driving assembly, a rack is arranged on the push plate, the transmission assembly comprises a driving gear, and the driving gear is meshed with the rack.
Preferably, in order to maintain the tension stably and reliably, the driving assembly comprises a locking assembly which is fixed on the mounting seat and is in fit connection with the push plate.
Preferably, in order to further improve the reliability, the locking assembly comprises a ratchet bar, a pawl, a T-shaped brake pressure plate, a guide bolt and a spring, the ratchet bar is positioned at the tail part of the push plate, the ratchet teeth are inverted to the tail part of the push plate, the pawl is positioned at the bottom of the T-shaped brake pressure plate and matched with the ratchet bar, and the T-shaped brake pressure plate is installed on the installation seat through the guide bolt and the spring.
An adjusting method of an optical engine driving belt tensioning adjusting device comprises the following steps:
1) detecting a tension force: the control unit detects a tension value measured by the tension detection assembly;
2) and comparing the tension with a set value: the control unit compares the measured current tension value with a set value of the control unit, when the detected tension is smaller than the set value, the step 3 is carried out until the detected tension value is larger than or equal to the set value, and when the detected tension value is larger than or equal to the set value, the step 4 is carried out;
3) increasing the tension force: when the detected tension is smaller than the set value, the driving assembly pushes the movable idler wheel assembly to move towards one side of the fixed idler wheel, the tension value is increased, and the step 1 is carried out again;
4) mechanism locking: when the detected tension value is larger than or equal to the set value, the driving assembly stops working, the locking assembly works, and the position of the push plate in the convex guide groove is locked.
The invention realizes the accurate automatic adjustment of the tension of the engine transmission belt by monitoring the engine transmission belt in real time, improves the accuracy of the optical engine experimental data and reduces the workload of operators.
Has the advantages that: the invention monitors the tension of the engine transmission belt in real time through the tension detection assembly, compares the detected tension with the set value of the control unit, when the tension is smaller than the set value, the control unit controls the driving assembly to work, the driving assembly pushes the movable idler wheel assembly to move to increase the tension of the engine tension belt, the accurate automatic control of the tension is realized, the accuracy of the optical engine experimental data is improved, and the workload of operators is reduced.
Drawings
FIG. 1 is an isometric view of the overall structure of the present invention;
FIG. 2 is a cross-sectional view of the present invention;
FIG. 3 is a schematic structural view of the mounting base of the present invention;
FIG. 4 is a schematic view of a movable idler mount according to the present invention;
FIG. 5 is a cross-sectional view of the tension sensing assembly of the present invention mounted on a moving idler assembly;
FIG. 6 is a top view of the tension sensing assembly of the present invention mounted on a moving idler assembly;
FIG. 7 is a cross-sectional view of the body of the moving idler of the present invention;
FIG. 8 is a schematic structural view of a push plate according to the present invention;
FIG. 9 is a schematic structural view of a T-shaped brake pad of the present invention;
FIG. 10 is a control flow diagram of the present invention.
Detailed Description
Embodiments will be described in detail below with reference to the accompanying drawings.
As shown in fig. 1, an optical engine transmission belt tension adjusting device comprises a fixed idler 2 and a moving idler assembly 3 which are positioned outside an engine tension belt 1 and are in close contact with the engine tension belt, wherein the fixed idler 2 and the moving idler assembly 3 are respectively installed on a mounting seat 4, and the moving idler assembly 3 can move towards the fixed idler 2 side on the mounting seat 4; the mounting seat 4 is provided with a driving component 5, and the driving component 5 pushes the movable idler wheel component 3 to move towards one side of the fixed idler wheel 2; move and be equipped with tensile force detection assembly 6 between idler subassembly 3 and the engine tensioning area 1, be equipped with control unit 7 between tensile force detection assembly 6 and the drive assembly 5, control unit 7 controls drive assembly 5 according to the tensile force that tensile force detection assembly 6 surveyed. According to the invention, the tension of the current engine tension belt 1 is detected by the tension detection assembly 6, the detected tension is compared with a set value of the control unit 7, when the tension is smaller than the set value, the control unit 7 controls the driving assembly 5 to work, the driving assembly 5 pushes the movable idler wheel assembly 3 to move so as to increase the tension of the engine tension belt 1, and the accurate automatic control of the tension is realized.
As shown in fig. 2, 3 and 4, in order to realize smooth movement of the movable idler assembly 3 and accurate control, a convex guide groove 41 is formed on the mounting seat 4, the movable idler assembly 3 comprises a movable idler body 31, a movable idler mounting shaft 32 and a movable idler mounting seat 33, the movable idler body 31 is mounted on the movable idler mounting seat 33 through the movable idler mounting shaft 32, the cross section of the movable idler mounting seat 33 is of a convex structure, and the movable idler mounting seat 33 is inserted into the convex guide groove 41.
As shown in fig. 5, 6 and 7, in order to realize accurate detection of a tension, the tension detection assembly 6 includes a resistance strain gauge 61, a tubular structure brush holder 62, a brush 63 and a charge amplifier 64, the resistance strain gauge 61 is adhered on the circumferential surface of the moving idler wheel body 31, the tubular structure brush holder 62 is installed inside the moving idler wheel body 31, the brush 63 is fixed inside the tubular structure brush holder 62, the moving idler wheel body 31 is provided with a connection hole 311 in the radial direction, and the resistance strain gauge 61 and the tubular structure brush holder 62 are connected by a connection line arranged in the connection hole 311; the brush 63 is connected to a charge amplifier 64, and the charge amplifier 64 is connected to the control unit 7.
As shown in fig. 1, 2 and 8, in order to realize that the driving assembly can accurately and reliably push the movable idler body 31, the driving assembly 5 includes a push plate 51, a driving motor 52 and a transmission assembly 53, the driving motor 52 and the transmission assembly 53 are respectively mounted on the mounting seat 4, the driving motor 52 drives the push plate 51 to move through the transmission assembly 53, the cross section of the push plate 51 is in a convex structure and is mounted in the convex guide groove 41 together with the movable idler mounting seat 33, and the push plate 51 pushes the movable idler mounting seat 33 to move. The push plate 51 is provided with a rack 511, the transmission assembly 53 comprises a driving gear 531, and the driving gear 531 is meshed with the rack 511.
As shown in fig. 1, 2 and 9, in order to realize the precise and reliable control of the driving assembly, the driving assembly 5 comprises a locking assembly 54, and the locking assembly 54 is fixed on the mounting seat 4 and is in fit connection with the push plate 51. In order to maintain the stability and reliability of the tension, the locking assembly 54 includes a ratchet bar 541, a pawl 542, a T-shaped brake pressing plate 543, a guide bolt 544 and a spring 545, the ratchet bar 541 is located at the rear portion of the push plate 51 and the ratchet teeth are inverted to the rear portion thereof, the pawl 542 is located at the bottom portion of the T-shaped brake pressing plate 543 and is engaged with the ratchet bar 541, and the T-shaped brake pressing plate 543 is mounted on the mounting seat 4 through the guide bolt 544 and the spring 545.
As shown in fig. 1 and 10, a method of adjusting an optical engine belt tension adjustment device includes the steps of:
1) detecting a tension force: the control unit 7 detects the tension value detected by the tension detection assembly 6;
2) and comparing the tension with a set value: the control unit 7 compares the measured current tension value with a set value of the control unit 7, when the detected tension is smaller than the set value, the step 3 is carried out until the detected tension value is larger than or equal to the set value, and when the detected tension value is larger than or equal to the set value, the step 4 is carried out;
3) increasing the tension force: when the detected tension is smaller than the set value, the driving assembly 5 pushes the movable idler wheel assembly 3 to move towards one side of the fixed idler wheel 2, the tension value is increased, and the step 1 is carried out again;
4) mechanism locking: when the detected tension value is larger than or equal to the set value, the driving assembly 5 stops working, the locking assembly 54 works, and the push plate 51 is locked at the position in the convex guide groove 41.
Claims (8)
1. An optical engine drive belt tensioning adjustment device which characterized in that: the device comprises a fixed idler wheel (2) and a movable idler wheel assembly (3) which are positioned on the outer side of an engine tension belt (1) and are in close contact with the engine tension belt, wherein the fixed idler wheel (2) and the movable idler wheel assembly (3) are respectively installed on a mounting seat (4), and the movable idler wheel assembly (3) can move towards one side of the fixed idler wheel (2) on the mounting seat (4); a driving component (5) is arranged on the mounting seat (4), and the driving component (5) pushes the movable idler wheel component (3) to move towards one side of the fixed idler wheel (2); remove and be equipped with tensile force detection assembly (6) between idler subassembly (3) and engine tension band (1), be equipped with control unit (7) between tensile force detection assembly (6) and drive assembly (5), drive assembly (5) are controlled according to the tensile force that tensile force detection assembly (6) measured in control unit (7).
2. The optical engine belt tension adjustment device of claim 1, wherein: be equipped with protruding type guide slot (41) on mount pad (4), remove idler subassembly (3) including removing idler body (31), removal idler installation axle (32) and removing idler mount pad (33), remove idler body (31) and install on removing idler mount pad (33) through removing idler installation axle (32), the cross-section of removing idler mount pad (33) is the type structure of dogcharacter, remove idler mount pad (33) and insert protruding type guide slot (41).
3. The optical engine belt tension adjustment device of claim 2, wherein: the tension detection assembly (6) comprises a resistance strain gauge (61), a tubular structure brush holder (62), a brush (63) and a charge amplifier (64), wherein the resistance strain gauge (61) is pasted on the circumferential surface of the movable idler wheel body (31), the tubular structure brush holder (62) is installed inside the movable idler wheel body (31), the brush (63) is fixed inside the tubular structure brush holder (62), a connecting hole (311) is formed in the movable idler wheel body (31) in the radial direction, and the resistance strain gauge (61) is connected with the tubular structure brush holder (62) through a connecting wire arranged in the connecting hole (311); the brush (63) is connected to a charge amplifier (64), and the charge amplifier (64) is connected to the control unit (7).
4. The optical engine belt tension adjustment device of claim 2, wherein: drive assembly (5) are including push pedal (51), driving motor (52), drive assembly (53), install respectively on mount pad (4) driving motor (52) and drive assembly (53), driving motor (52) pass through drive assembly (53) drive push pedal (51) and remove, the cross section of push pedal (51) is installed simultaneously in protruding type guide slot (41) for type structure and removal idler mount pad (33), push pedal (51) promote to remove idler mount pad (33) and remove.
5. The optical engine belt tension adjustment device of claim 4, wherein: the push plate (51) is provided with a rack (511), the transmission assembly (53) comprises a driving gear (531), and the driving gear (531) is meshed with the rack (511).
6. The optical engine belt tension adjustment device of claim 5, wherein: the driving assembly (5) comprises a locking assembly (54), and the locking assembly (54) is fixed on the mounting seat (4) and is in fit connection with the push plate (51).
7. The optical engine belt tension adjustment device of claim 6, wherein: the locking assembly (54) comprises a ratchet bar (541), a pawl (542), a T-shaped brake pressure plate (543), a guide bolt (544) and a spring (545), wherein the ratchet bar (541) is located at the tail part of the push plate (51) and the ratchet is inverted to the tail part of the push plate, the pawl (542) is located at the bottom of the T-shaped brake pressure plate (543) and matched with the ratchet bar (541), and the T-shaped brake pressure plate (543) is installed on the installation seat (4) through the guide bolt (544) and the spring (545).
8. The method of adjusting an optical engine belt tension adjustment device of claim 6, comprising the steps of:
1) detecting a tension force: the control unit (7) detects the tension value measured by the tension detection assembly (6);
2) and comparing the tension with a set value: the control unit (7) compares the measured current tension value with a set value of the control unit (7), when the detected tension is smaller than the set value, the step 3 is carried out until the detected tension value is larger than or equal to the set value, and when the detected tension value is larger than or equal to the set value, the step 4 is carried out;
3) increasing the tension force: when the detected tension is smaller than the set value, the driving assembly (5) pushes the movable idler wheel assembly (3) to move towards one side of the fixed idler wheel (2), the tension value is increased, and the step 1 is carried out again;
4) mechanism locking: when the detected tension value is larger than or equal to the set value, the driving assembly (5) stops working, the locking assembly (54) works, and the push plate (51) is locked at the position in the convex guide groove (41).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010392513.7A CN111706653A (en) | 2020-05-11 | 2020-05-11 | Optical engine transmission belt tensioning adjusting device and adjusting method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010392513.7A CN111706653A (en) | 2020-05-11 | 2020-05-11 | Optical engine transmission belt tensioning adjusting device and adjusting method |
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| CN111706653A true CN111706653A (en) | 2020-09-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010392513.7A Pending CN111706653A (en) | 2020-05-11 | 2020-05-11 | Optical engine transmission belt tensioning adjusting device and adjusting method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112283309A (en) * | 2020-10-09 | 2021-01-29 | 江苏大学 | Quick adjusting device of optical engine drive belt |
| CN113028008A (en) * | 2020-10-20 | 2021-06-25 | 深圳素士科技股份有限公司 | Noise reduction shaver |
| CN114847010A (en) * | 2022-05-30 | 2022-08-05 | 江苏大学 | Automatic adjusting device and method for tension degree of transmission belt of combine harvester |
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| CN109468783A (en) * | 2018-11-23 | 2019-03-15 | 临猗县鑫得利纺织印染有限公司 | Liquid ammonia mercerizer tension sensor |
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2020
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112283309A (en) * | 2020-10-09 | 2021-01-29 | 江苏大学 | Quick adjusting device of optical engine drive belt |
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| CN114847010B (en) * | 2022-05-30 | 2023-10-10 | 江苏大学 | Automatic adjusting device and method for tension degree of combine harvester transmission belt |
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Application publication date: 20200925 |
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