CN209783816U - test reference control system for crank power meter - Google Patents
test reference control system for crank power meter Download PDFInfo
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- CN209783816U CN209783816U CN201920603226.9U CN201920603226U CN209783816U CN 209783816 U CN209783816 U CN 209783816U CN 201920603226 U CN201920603226 U CN 201920603226U CN 209783816 U CN209783816 U CN 209783816U
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- crank
- weight
- state relay
- power meter
- weights
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Abstract
The utility model provides a test reference control system of a crank power meter, which comprises a main frame, a crank shaft and a crank shaft, wherein the main frame comprises a vertical rod, a toothed plate is arranged on the vertical rod, and a chain crank mounting system is arranged at the top of the main frame; a weight stack comprising a plurality of mutually stacked weights; the weight stack is arranged on the lifting platform; the electric control unit comprises an MCU controller, a three-phase solid-state relay connected with the MCU controller and a U-shaped correlation sensor, and is arranged on the supporting plate and used for being matched with the toothed plate to sense the ascending and descending distance of each group of weights. The utility model discloses provide full-automatic design theory for the first time in the trade, through the motor drive elevating platform rise, descend, cooperation pinion rack and U type correlation sensor realize that the accuracy holds up, uninstalls the weight of different weight to the realization is applyed different weight to the crank and is made the crank take place deformation, and both feet are trampled to the crank when really having simulated the open air and riding. The weights are not increased or decreased by manual moving, and the efficiency is improved.
Description
Technical Field
the utility model belongs to the electromechanical control field, concretely relates to crank power meter test benchmark control system.
background
One of the main indicators for determining the quality of a bicycle is the lightness, i.e. the amount of power required to ride the bicycle, and the riding power is currently measured mainly by a crank power meter. Most crank power meters on the market at present adopt a mode of suspending a rated weight to calibrate a power meter measuring reference. The crank is fixed through a crank mounting system, force is applied to the crank end through increasing and decreasing weights, force is generated when a person rides in a simulated mode, and power generated when the person rides in the simulated mode is obtained according to stress change of the simulated strain gauge on the crank, so that accuracy of the power meter is verified.
The above system has the following disadvantages:
At present, the stress is simulated by a manual weight moving mode, and the process is as follows: the crank end hangs a tray, and the manual weight of moving is on the tray, and once the simulation is exactly 200kg, and the weight of every weight is at 10kg, and the manual weight defect of moving is: A. because the weight is heavy and the efficiency is low, the operator is easy to be injured, and the situation of sprain of the operator often happens in the practical process; B. the manual weight placing on the tray has low operation accuracy and is easy to deflect, thereby influencing the precision of the simulation force application.
SUMMERY OF THE UTILITY MODEL
For solving current crank power meter test reference system and mostly simulating the atress through the artifical mode of removing the weight, and then there is inefficiency and the easy injured of operator and the problem that the operation precision is low, the utility model provides a full-automatic crank power meter test reference control system.
The utility model discloses an adopt following technical scheme to realize:
A test reference control system of a crank power meter comprises a main frame, a crank power meter and a crank power meter, wherein the main frame comprises a vertical rod, a toothed plate is arranged on the vertical rod, and a chain and crank mounting system is arranged at the top of the main frame; a weight stack comprising a plurality of mutually stacked weights; the weight group is arranged on the lifting platform, and the lifting of the lifting platform is driven by the motor to apply or withdraw upward supporting force to the weight group; the electric control unit comprises an MCU controller, wherein a first output end of the MCU controller is connected with a control end of a first three-phase solid-state relay, an output end of the first three-phase solid-state relay is connected with a motor, and an input end of the first three-phase solid-state relay is connected with a three-phase alternating current power supply through a fuse and a contactor in sequence; the second output end of the MCU controller is connected with the control end of a second three-phase solid-state relay, the output end of the second three-phase solid-state relay is connected with the motor, and the input end of the second three-phase solid-state relay is connected with the three-phase alternating current power supply through the fuse and the contactor in sequence; the device also comprises a U-shaped correlation sensor which is arranged on the supporting plate and used for being matched with the toothed plate to sense the ascending and descending distance of each group of weights.
Further, the electronic control unit further includes: and the two laser sensors are vertically arranged on the vertical rod and used for sensing the maximum rising height and the minimum falling height of the supporting plate.
further, the pinion rack includes a plurality of broach that the interval set up.
further, the motor is a three-phase asynchronous motor.
Furthermore, the device also comprises an upward switch, a downward switch and a reset switch which are electrically connected with the MCU controller.
Furthermore, the first output end and the second output end of the MCU controller output 12V direct current power supplies.
Compared with the prior art, the utility model discloses an advantage lies in with positive effect:
The utility model discloses crank dynamometer test benchmark control system, whole equipment structural design is reasonable, compact, proposes full-automatic design theory in the trade for the first time, through motor drive elevating platform rise, descend, cooperation pinion rack and U type correlation sensor, realize that the accuracy holds up, uninstalls the weight of different weights to realize applying different weight to the crank and making the crank take place deformation, both feet are trampled to the crank when really having simulated the open air and riding. The weights are not required to be increased or decreased by manual moving, the efficiency is improved, and meanwhile, the weight groups are butted in advance and are orderly placed on the lifting platform, so that the stress centers of the weights are on the same straight line, and the offset phenomenon cannot occur during loading and unloading, so that the operation precision is improved.
drawings
FIG. 1 is a front view of a test reference control system of a crank power meter according to an embodiment of the present invention;
FIG. 2 is a perspective view of a test reference control system of the crank power meter according to the embodiment of the present invention;
Fig. 3 is a schematic view of the structure of a weight stack according to an embodiment of the present invention;
FIG. 4 is a sectional view of the weight stack A-A shown in FIG. 3;
FIG. 5 is a first perspective view of a chain tensioning table according to an embodiment of the present invention;
FIG. 6 is a perspective view of a chain tensioning table according to an embodiment of the present invention;
FIG. 7 is a schematic block diagram of a test reference control system of the crank power meter according to an embodiment of the present invention;
In the above figures:
1. A main frame; 101. a vertical rod;
2. A lifting platform; 201. a support plate; 202. a vertical slide bar; 203. a screw; 204 a tray;
3. a motor;
4. Weight groups; 41. a weight body; 411. a recessed portion; 412. a movable cavity; 413. a boss portion; 414. a hanging structure; 4141. an inverted L-shaped piece; 42. a T-shaped piece; 43. a screw;
5. An electronic control unit;
6. A suspension rod; 601. a circular truncated cone;
7. A crank;
8. horizontally fixing a tool for a crank; 801. a tool body; 802. briquetting; 803. a horizontal hole;
9. a chain tensioning table; 91. a supporting seat; 92. a sliding seat; 921. a fixed block; 922. a slider; 923. a stopper; 924. a locking device; 925. rotating the handle; 93. a lead screw; 94. a vertical member; 95. a slider guide bar;
10. Chain, 11, U-shaped correlation sensor; 12. a toothed plate; 121. comb teeth; 13. a horizontal positioning shaft; 14. A laser sensor.
Detailed Description
the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
referring to fig. 1 and 2, a first embodiment of a crank power meter test reference control system includes: the device comprises a main frame 1, a lifting platform 2, a motor 3, a weight group 4, a suspension rod 6, a chain crank mounting system and an electric control unit 5.
The main frame 1 comprises a whole frame composed of a cross bar and six vertical bars 101, the space in the frame is divided into two parts by the six vertical bars 101, the left side is a weight group 4 lifting part, the right side is an electric control part, and the electric control part comprises an electric control unit 5 for driving a motor. A chain crank mounting system is arranged on the main frame 1, and a toothed plate 12 is arranged on the vertical rod 101.
The lifting platform 2 is used for supporting the weight group 4 and comprises a supporting plate 201 and vertical sliding rods 202, the supporting plate 201 is sleeved on the vertical sliding rods 202, a top plate 204 is arranged at the bottom end of the supporting plate 201, the top plate 204 is connected with a driving screw 203, and the rotary output power of the motor 3 is converted into driving force for driving the top plate 204 to further drive the supporting plate 201 to ascend or descend under the guiding action of the vertical sliding rods 202 through the screw 203. In order to increase stability, four vertical sliding rods 202 are sleeved at four corners of the supporting plate 201, so that stability of ascending and descending of the weight stack 4 can be ensured.
Referring to fig. 3 and 4, the weight stack 4 comprises a plurality of weights stacked on each other, and the uppermost weight is hung on the bottom end of the suspension rod 6; the weights are hung in a sleeved mode through the hanging structures 414, and when the bottoms of the weights are not supported upwards, the weights are freely hung below the last weight.
Referring to fig. 7, the electronic control unit includes an MCU controller, a first output terminal of the MCU controller is connected to a control terminal of a first three-phase solid-state relay, an output terminal of the first three-phase solid-state relay is connected to the motor, an input terminal of the first three-phase solid-state relay is connected to a three-phase ac power source through a fuse and a contactor in sequence, and the first three-phase solid-state relay is configured to control forward rotation of the motor; the second output end of the MCU controller is connected with the control end of a second three-phase solid-state relay, the output end of the second three-phase solid-state relay is connected with a motor, the input end of the second three-phase solid-state relay is connected with the three-phase alternating current power supply through the fuse and the contactor in sequence, and the second three-phase solid-state relay is used for controlling the reverse rotation of the motor; the device also comprises a U-shaped correlation sensor 11 which is arranged on the supporting plate 201 and is used for being matched with the toothed plate to sense the ascending and descending distance of each group of weights. The toothed plate 12 of the embodiment comprises a plurality of comb teeth 12 which are arranged at intervals, when weights are freely stacked together and the weights are freely suspended below the last weight, the distance between every two adjacent weights at two moments is the distance between every two comb teeth 121, the toothed plate 12 is vertically placed in the U-shaped correlation sensor 11, the U-shaped correlation sensor 11 moves up and down, and sensed comb tooth signals are transmitted to the MCU controller; the MCU controller further converts the number and the weight of the loaded weights, and the weights are automatically loaded and unloaded according to requirements in sequence.
in order to effectively control the maximum distance of the lifting and descending of the supporting plate, the electric control unit further comprises: the two laser sensors are vertically arranged on the vertical rod and used for sensing the maximum ascending height and the minimum descending height of the supporting plate, and the MCU controller controls the motor to stop according to input signals of the two photoelectric switches. In view of cost reduction, the motor of the embodiment adopts a three-phase asynchronous motor. In addition, for convenient control, the MCU controller also comprises an upward switch, a downward switch and a reset switch which are electrically connected with the MCU controller.
The specific control process is as follows: when receiving ascending, decurrent switching signal, the coil is got to electricity in first three-phase solid state relay of MUC control motor output 12V direct current power supply control or the second three-phase solid state relay through the output to control three-phase asynchronous machine corotation or reversal, through U type correlation sensor monitoring weight, the motor stops automatically, and laser sensor's effect is that equipment is walked to top or the low end after, the control motor stops no longer equidirectional rotation, guarantees the safety of equipment. This embodiment still is equipped with reset switch, presses reset switch, and the layer board moves to topmost, and whole polished rod is in the state of not atress.
In order to actively cut off the power supply when the equipment is abnormally operated, an emergency stop switch and a power supply state indicator lamp which are used for controlling the coil to be electrified and power-off are connected to the contactor.
During testing, the head end and the tail end of the chain 8 are fixed on the chain crank mounting system, after the level is adjusted, the pedal shaft is mounted on the crank, the pedal shaft is connected with the weight group 4 through the suspension rod 6, and the motor 3 drives the lifting platform 2 to ascend/descend to realize automatic mounting of different weights.
Second embodiment, the present embodiment provides a weight stack 4, referring to fig. 3 and 4, including a weight body 41 and a suspension structure 414, wherein the bottom of the weight body 41 has a concave portion 411; the top is provided with a boss part 413 matched with the concave part 411 or is provided with a hanging structure 414; a movable chamber 412 which is communicated with the concave part 411 is arranged in the middle part; the suspension structure 414 includes a stopping portion that can move up and down in the movable chamber, and a fixing portion that is fixed on the boss portion of the other weight.
The weights in weight group 4 pile up each other when placing, and the top weight needs to be hung and put in 6 bottoms of polished rod, so the top weight sets up to suspended structure 414, suspended structure 414's design will cooperate with the polished rod bottom, can set up the couple in 6 bottoms of polished rod, sets up supporting lantern ring at the weight top, and this embodiment sets up a round piece 601 in 6 bottoms of polished rod for convenient quick the hanging, and the symmetry is equipped with two inverted L type pieces 4141 on 4 topmost weights in weight group.
The weights at the lower end of the weight group 4 are sequentially sleeved and hung with each other through the suspension structure, so that the automatic sleeving and hanging during the unloading of the supporting force are met, the sleeve is realized through the simplest suspension structure in the embodiment, the sleeve comprises a T-shaped part 42 and a screw 43, the T-shaped part 42 is provided with a screw hole with a middle hole, the upper end of the T-shaped part 42 is positioned in the movable cavity 412 during the installation, the lower end of the T-shaped part extends out of the concave part 411 and is assembled on the convex part 413 of the next weight, and the screw 43 penetrates through the. The upper and lower weights are matched in a concave-convex mode, the positioning effect is achieved, and the gravity of each weight is located on the same straight line when the weights are stacked.
when the gravity of the weight group completely acts on the supporting plate 201, the gap between the weights is almost zero due to the matching of the concave-convex structures, and when the lowermost weight is not supported by the supporting plate, the boss part of the lower weight is separated from the boss part of the upper weight.
the weight stack of the embodiment realizes automatic suspension during external force unloading, further realizes automatic loading and unloading of different forces, has simple structural design, and can be applied to the first embodiment and other systems needing loading force.
In the third embodiment, referring to fig. 5 and 6, the present embodiment provides a chain crank mounting system, including a crank horizontally fixing tool 8 and a chain tensioning table 9, where the crank horizontally fixing tool 8 includes a tool body 801, a pressing block 802 and a horizontal hole 803, a crank 7 is movably mounted on the tool body 801 through the pressing block 802, after leveling, one end of the crank hangs a weight through a suspension rod 6, and the other end of the crank is fixed through a horizontal positioning shaft 12 inserted into the horizontal hole. The chain tensioning station 9 comprises: supporting seat 91 and the sliding seat 92 of top thereof, sliding seat 92 from left to right includes fixed block 921 in proper order, slider 922, dog 923, locking device 924 and twist grip 925, lead screw 93 one end is fixed on fixed block 921, pass slider 922 and dog 923 back connection twist grip 925, be equipped with perpendicular 94 on the slider 922, during the use, the chain 10 head end is fixed on perpendicular 94, the tail end is fixed on supporting seat 91, twist grip 925 rotates, drive slider 922 tensioning chain 10 back through locking device 924 locking lead screw 93. In order to enhance the stability of the sliding block 922 in the moving process, the sliding block guide rods 95 are further included, the sliding block guide rods are respectively located on two sides of the lead screw 93, one end of each sliding block guide rod is fixed on the fixing block 921, and the sliding block 922 penetrates through the fixing block and then is fixed on the stop block 923.
During testing, the head end and the tail end of the chain 10 are fixed on the chain tensioning table 9, locked by nuts and placed to rotate; after the left/right crank is adjusted to be horizontal, the chain 10 is further tensioned and fixed through rotating the handle 925, and the adjusting mode is simple, convenient and quick and can be applied to the first embodiment or the second embodiment and other systems needing tension adjustment.
the above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in other forms, and any person skilled in the art may use the above-mentioned technical contents to change or modify the equivalent embodiment into equivalent changes and apply to other fields, but any simple modification, equivalent change and modification made to the above embodiments according to the technical matters of the present invention will still fall within the protection scope of the technical solution of the present invention.
Claims (6)
1. a crank power meter test reference control system is characterized by comprising:
the main frame comprises a vertical rod, a toothed plate is arranged on the vertical rod, and a chain and crank mounting system is arranged at the top of the main frame;
a weight stack comprising a plurality of mutually stacked weights;
The weight group is arranged on the lifting platform, and the lifting platform is driven by a motor to lift so as to apply or cancel upward supporting force to the weight group;
The electric control unit comprises an MCU controller, wherein a first output end of the MCU controller is connected with a control end of a first three-phase solid-state relay, an output end of the first three-phase solid-state relay is connected with a motor, and an input end of the first three-phase solid-state relay is connected with a three-phase alternating current power supply through a fuse and a contactor in sequence; the second output end of the MCU controller is connected with the control end of a second three-phase solid-state relay, the output end of the second three-phase solid-state relay is connected with the motor, and the input end of the second three-phase solid-state relay is connected with the three-phase alternating current power supply through the fuse and the contactor in sequence; the device also comprises a U-shaped correlation sensor which is arranged on the supporting plate and used for being matched with the toothed plate to sense the ascending and descending distance of each group of weights.
2. the crank power meter test reference control system according to claim 1, wherein said electronic control unit further comprises: and the two laser sensors are vertically arranged on the vertical rod and used for sensing the maximum rising height and the minimum falling height of the supporting plate.
3. the crank power meter test reference control system according to claim 1, wherein the toothed plate comprises a plurality of teeth arranged at intervals.
4. the system according to claim 1, wherein the motor is a three-phase asynchronous motor.
5. the crank power meter test reference control system according to claim 1, further comprising an up switch, a down switch and a reset switch electrically connected to the MCU controller.
6. The system for testing reference control of crank power meter according to claim 1, wherein the first and second output terminals of said MCU controller output 12V DC power.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920603226.9U CN209783816U (en) | 2019-04-29 | 2019-04-29 | test reference control system for crank power meter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920603226.9U CN209783816U (en) | 2019-04-29 | 2019-04-29 | test reference control system for crank power meter |
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| CN209783816U true CN209783816U (en) | 2019-12-13 |
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| CN201920603226.9U Active CN209783816U (en) | 2019-04-29 | 2019-04-29 | test reference control system for crank power meter |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109990944A (en) * | 2019-04-29 | 2019-07-09 | 青岛迈金智能科技有限公司 | Crank power meter test benchmark control system |
-
2019
- 2019-04-29 CN CN201920603226.9U patent/CN209783816U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109990944A (en) * | 2019-04-29 | 2019-07-09 | 青岛迈金智能科技有限公司 | Crank power meter test benchmark control system |
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Address after: 266000 Room 302, building a 3, 328 Chengkang Road, Xiazhuang street, Chengyang District, Qingdao City, Shandong Province Patentee after: Qingdao maijin Intelligent Technology Co.,Ltd. Address before: 266000 room 505, 5th floor, 79 Xuzhou Road, Shinan District, Qingdao City, Shandong Province Patentee before: QINGDAO MAGENE INTELLIGENCE TECHNOLOGY Co.,Ltd. |
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