CN210221381U - Test reference system for crank power meter - Google Patents
Test reference system for crank power meter Download PDFInfo
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- CN210221381U CN210221381U CN201920603291.1U CN201920603291U CN210221381U CN 210221381 U CN210221381 U CN 210221381U CN 201920603291 U CN201920603291 U CN 201920603291U CN 210221381 U CN210221381 U CN 210221381U
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Abstract
The utility model provides a crank power meter test reference system, which comprises a main frame, a chain crank mounting system is arranged on the top of the main frame, a crank is arranged on the chain crank mounting system during testing, and a suspension rod is arranged at the end of the crank; the weight group comprises a plurality of mutually stacked weights, and the weight at the uppermost end is sleeved at the bottom end of the suspension rod; the weights are mutually sleeved and hung through a hanging structure; the weight stack is arranged on the lifting platform; and the electric control unit is used for driving the motor. The utility model discloses whole equipment structural design is reasonable, compact, provides automatic design theory in the trade for the first time, rises, descends through the motor drive elevating platform to realize holding up, uninstalling the weight of different weight, thereby realize that different weight makes the crank take place deformation to the crank application of force, both feet trample 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 mechanical equipment field, concretely relates to crank power meter test reference 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
The mode that does not solve current crank power meter test reference system and move the weight through the manual work mostly simulates the atress, and then has the problem that inefficiency and operator are injured easily and the operation precision is low, the utility model provides a full-automatic crank power meter test reference system.
The utility model discloses an adopt following technical scheme to realize:
a crank power meter test reference system, comprising: the main frame comprises a vertical rod, a chain crank mounting system is mounted at the top of the main frame, a crank is mounted on the chain crank mounting system during testing, and a suspension rod is mounted at the end of the crank; the weight group comprises a plurality of mutually stacked weights, and the weight at the uppermost end is sleeved at the bottom end of the suspension rod; the weights are mutually sleeved and hung through the hanging structure, and when the bottom of each weight is not subjected to upward supporting force, the weight is freely hung below the previous weight; 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; and the electric control unit is used for driving the motor.
Furthermore, the elevating platform comprises a supporting plate and a vertical sliding rod, and the supporting plate is sleeved on the vertical sliding rod.
Furthermore, the bottom end of the suspension rod is provided with a round platform piece, and the weights at the uppermost end of the weight group are symmetrically provided with two inverted L-shaped pieces.
Further, the weight stack comprises a weight body and a suspension structure, wherein the bottom of the weight body is provided with a concave part; the top is provided with a boss part matched with the concave part or is provided with a hanging structure; the middle part is provided with a movable cavity communicated with the concave platform part; the suspension structure comprises a stopping part and a fixing part, the stopping part can move up and down in the movable cavity, and the fixing part is fixed on the boss part of the other weight.
Further, the suspension structure comprises a T-shaped piece and a screw, the T-shaped piece is provided with a screw hole with a middle hole, when the suspension structure is installed, the upper end of the T-shaped piece is located in the movable cavity, the lower end of the T-shaped piece extends out of the concave platform part and is assembled on the convex platform part of the next weight, and the screw penetrates through the screw hole and is screwed on the convex platform part of the weight.
Further, chain crank carry system includes the taut platform of the fixed frock of crank level and chain, the fixed frock of crank level includes frock body, briquetting and horizontal hole, the crank passes through briquetting movable mounting at the frock body, and the one end hangs the weight through the suspension arm after adjusting the level, and the other end is fixed through the horizontal location axle that inserts the horizontal hole.
Further, the chain tensioning station comprises: the sliding seat comprises a fixed block, a sliding block, a stop block and a rotating handle from left to right, one end of a lead screw is fixed on the fixed block and connected with the rotating handle after penetrating through the sliding block and the stop block, a vertical piece is arranged on the sliding block, one end of a chain is fixed on the vertical piece, and the other end of the chain is fixed on the supporting seat.
Further, the electric control unit comprises an MCU controller, and an upward switch, a downward switch and a reset switch which are electrically connected with the MCU controller, wherein the MCU controller controls the forward rotation, the reverse rotation and the stop of the motor according to the received signals of the upward switch, the downward switch and the reset switch.
The electronic control unit further comprises a toothed plate arranged on the vertical rod, and a U-shaped correlation sensor 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; and the two photoelectric 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 motor is a three-phase asynchronous motor.
Compared with the prior art, the utility model discloses an advantage lies in with positive effect:
the utility model discloses crank dynamometer test reference system, whole equipment structural design is reasonable, compact, and the design theory of first time proposing automation in the trade rises, descends through the motor drive elevating platform to the weight of different weights of realization support, uninstallation, thereby realize different weight to the crank application of force and make the crank take place deformation, both feet trample to the articulate 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 efficiency is improved.
Drawings
Fig. 1 is a front view of a test reference system of a crank power meter according to an embodiment of the present invention;
fig. 2 is a perspective view of a test reference system of a crank power meter according to an 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 first perspective view of a chain tensioning table 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 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 photoelectric switch.
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 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.
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.
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.
The weight of the embodiment can be loaded and unloaded by controlling the starting and stopping and positive and negative rotation of the motor. During actual control, the motor can be controlled to start and stop according to the moving distance of the supporting plate by arranging the scale on the weight group side.
Second embodiment, referring to fig. 3 and 4, the present embodiment provides a weight stack 4, which includes 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.
In a fourth embodiment, the present embodiment provides a crank power meter test reference control system based on the hardware device in the first embodiment or the second embodiment or the third embodiment, including a toothed plate 12 mounted on the vertical rod 101, and a U-shaped correlation sensor 11 mounted on the supporting plate 201, for cooperating with the toothed plate 12 to sense the ascending and descending distance of each weight/group. 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.
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 (10)
1. A crank power meter test reference system is characterized by comprising:
the main frame comprises a vertical rod, a chain crank mounting system is mounted at the top of the main frame, a crank is mounted on the chain crank mounting system during testing, and a suspension rod is mounted at the end of the crank;
the weight group comprises a plurality of mutually stacked weights, and the weight at the uppermost end is sleeved at the bottom end of the suspension rod; the weights are mutually sleeved and hung through the hanging structure, and when the bottom of each weight is not subjected to upward supporting force, the weight is freely hung below the previous weight;
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;
and the electric control unit is used for driving the motor.
2. The crank power meter test reference system as claimed in claim 1, wherein the lifting platform comprises a supporting plate and a vertical sliding rod, and the supporting plate is sleeved on the vertical sliding rod.
3. The crank power meter test reference system as claimed in claim 1, wherein the bottom end of the suspension rod is provided with a round piece, and the top weight of the weight stack is symmetrically provided with two inverted L-shaped pieces.
4. The crank power meter test reference system according to claim 1, 2 or 3, wherein the weight stack comprises a weight body and a suspension structure, the bottom of the weight body is provided with a concave table part; the top is provided with a boss part matched with the concave part or is provided with a hanging structure; the middle part is provided with a movable cavity communicated with the concave platform part; the suspension structure comprises a stopping part and a fixing part, the stopping part can move up and down in the movable cavity, and the fixing part is fixed on the boss part of the other weight.
5. The crank power meter test reference system as recited in claim 4, wherein said suspension structure comprises a T-shaped member and a screw, said T-shaped member has a screw hole with a central hole, when installed, the upper end of said T-shaped member is located in said movable cavity, the lower end of said T-shaped member extends out of said recessed portion and is fitted on the boss portion of the next weight, and said screw is threaded through said screw hole and is screwed on the boss portion of the weight.
6. The crank power meter test reference system according to claim 1, 2 or 3, wherein the chain crank mounting system comprises a crank horizontal fixing tool and a chain tensioning table, the crank horizontal fixing tool comprises a tool body, a pressing block and a horizontal hole, the crank is movably mounted on the tool body through the pressing block, after the crank is adjusted to be horizontal, one end of the crank is used for hanging a weight through a suspension rod, and the other end of the crank is fixed through a horizontal positioning shaft inserted into the horizontal hole.
7. The crank power meter test reference system according to claim 6, wherein the chain tensioning stage comprises: the sliding seat comprises a fixed block, a sliding block, a stop block and a rotating handle from left to right, one end of a lead screw is fixed on the fixed block and connected with the rotating handle after penetrating through the sliding block and the stop block, a vertical piece is arranged on the sliding block, one end of a chain is fixed on the vertical piece, and the other end of the chain is fixed on the supporting seat.
8. The crank power meter test reference system as claimed in claim 2, wherein the electric control unit comprises an MCU controller, and an up switch, a down switch and a reset switch electrically connected with the MCU controller, wherein the MCU controller controls the motor to rotate forward, backward and stop according to the received signals of the up switch, the down switch and the reset switch.
9. The crank power meter test reference system according to claim 8, wherein: the device comprises a toothed plate arranged on the vertical rod, an electric control unit and a U-shaped correlation sensor, wherein the U-shaped correlation sensor is arranged on the supporting plate and is used for being matched with the toothed plate to sense the ascending and descending distance of each group of weights; and the two photoelectric 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.
10. The crank power meter test reference system according to claim 1, wherein the motor is a three-phase asynchronous motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920603291.1U CN210221381U (en) | 2019-04-29 | 2019-04-29 | Test reference system for crank power meter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920603291.1U CN210221381U (en) | 2019-04-29 | 2019-04-29 | Test reference system for crank power meter |
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| Publication Number | Publication Date |
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| CN210221381U true CN210221381U (en) | 2020-03-31 |
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| CN201920603291.1U Active CN210221381U (en) | 2019-04-29 | 2019-04-29 | Test reference system for crank power meter |
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| CN (1) | CN210221381U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109990945A (en) * | 2019-04-29 | 2019-07-09 | 青岛迈金智能科技有限公司 | Crank power meter test benchmark system |
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2019
- 2019-04-29 CN CN201920603291.1U patent/CN210221381U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109990945A (en) * | 2019-04-29 | 2019-07-09 | 青岛迈金智能科技有限公司 | Crank power meter test benchmark 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. |