CN214251373U - Torsion calibrating device of chassis dynamometer - Google Patents
Torsion calibrating device of chassis dynamometer Download PDFInfo
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- CN214251373U CN214251373U CN202120374819.XU CN202120374819U CN214251373U CN 214251373 U CN214251373 U CN 214251373U CN 202120374819 U CN202120374819 U CN 202120374819U CN 214251373 U CN214251373 U CN 214251373U
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- force cell
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- steel band
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Abstract
The utility model relates to a torsion calibrating device of chassis dynamometer, including equipment support and force cell sensor, force cell sensor's one end is passed through the hinge mechanisms and is linked to each other with equipment support, and force cell sensor's other one end is connected with the steel band, and the steel band is kept away from force cell sensor's one end is equipped with and is used for and is surveyed cylinder periphery fixed connection's fixed knot and construct, has on the steel band in fixed knot construct the upside be used for around being surveyed the cylinder switching-over and with being surveyed the tangent switching-over section mutually of cylinder, be provided with on the equipment support and be used for upwards promoting force cell sensor so that the steel band draws the hoist mechanism who is surveyed the cylinder. The utility model provides a need add among the prior art and subtract inconvenient and easy product of load weight operation because the weight position is different and the technical problem who produces the error.
Description
Technical Field
The utility model relates to a torsion calibrating device of chassis dynamometer machine in the calibration verification field.
Background
The contact type automobile chassis dynamometer used in the motor vehicle detection station is a method for contacting a driving wheel with a roller of the chassis dynamometer and a device for remotely measuring torque, rotating speed and power according to moment balance, and is mainly used for directly measuring the output torque and rotating speed of a power device and obtaining effective power through calculation.
The chassis dynamometer comprises a roller and a loading motor, a torsion sensor is arranged on a transmission path between the loading motor and the roller, the torsion sensor needs to be calibrated frequently by using a torsion calibration device to ensure the precision of the torsion sensor, the current common torsion calibration device is a weight lever type torsion calibration device, namely a calibration lever is fixed on the loading motor at one end of the roller to be tested, a weight is loaded through a weight tray, the force sensor is pressed, a torsion value or an analog value is displayed, and the calibration of the torsion is realized.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a torsion calibrating device for being directed at torsion sensor of chassis dynamometer machine carries out calibration to need add the inconvenient and easy product of load shedding weight operation to produce because the different technical problem who produces the error in weight position among the solution prior art.
In order to solve the technical problem, the technical scheme of the utility model as follows:
the utility model provides a torsion calibrating device of chassis dynamometer, includes equipment support and force cell sensor, and force cell sensor's one end is passed through hinge mechanism and is linked to each other with equipment support, and force cell sensor's other one end is connected with the steel band, and the steel band is kept away from force cell sensor's one end is equipped with and is used for being surveyed cylinder periphery fixed connection's fixed knot and construct, has on the steel band in fixed knot construct the upside be used for around being surveyed the cylinder switching-over and with being surveyed the tangent switching-over tangent section of cylinder, be provided with on the equipment support and be used for upwards promoting force cell sensor so that the steel band draws the hoist mechanism who is surveyed the cylinder.
The fixing structure is a magnetic attraction fixing structure, a negative pressure sucker fixing structure or an adhesive fixing structure.
The hinge mechanism is a hooke hinge mechanism or a universal hinge mechanism.
The total length of the fixed structure and the reversing phase section is smaller than the perimeter of the roller to be measured.
The device support is a door-shaped frame and comprises a support cross beam and supporting legs fixed at two ends of the support cross beam, a screw rod perforation is arranged on the support cross beam, a connecting screw rod penetrates through the screw rod perforation, the force cell is connected to the connecting screw rod through the hinge mechanism, so that the force cell is connected with the device support, and the lifting mechanism comprises a force application hand wheel in threaded connection with the upper end of the connecting screw rod.
The equipment support comprises a support cross beam with the length perpendicular to the axial direction of the roller to be measured, the lifting mechanism comprises a jacking cylinder which is jacked at the bottom of one end of the support cross beam, and the other end of the support cross beam is supported on a workbench of the chassis dynamometer.
The utility model has the advantages that: when the torsion sensor of the chassis dynamometer is calibrated, a motor corresponding to a measured roller is locked, a fixed structure of a steel belt is fixedly connected with the periphery of the measured roller, a reversing phase section of the steel belt is reversed around the measured roller and is kept tangent to the measured roller, a lifting mechanism generates torsion on the measured roller through the force sensor, and due to the fact that the hinging mechanism and the reversing phase section are in reversing relation with the winding channel of the measured roller, no matter how the lifting mechanism is lifted, the steel belt can be tangent to the measured roller all the time, namely the axis of the force sensor can be tangent to the measured roller all the time, the torsion sensor can read through the force sensor, and accordingly the torsion sensor is calibrated.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment 1 of the torque calibration apparatus for a middle chassis dynamometer of the present invention;
FIG. 2 is a top view of the bracket beam of FIG. 1;
FIG. 3 is a state diagram of the use of FIG. 1;
FIG. 4 is a schematic view of the steel strip and the measured roller of FIG. 1, and the measured roller and the torque sensor;
fig. 5 is a schematic structural diagram of embodiment 2 of the torque calibration apparatus for a center chassis dynamometer of the present invention.
Detailed Description
The utility model discloses the embodiment of well chassis dynamometer machine's torsion calibrating device is shown in fig. 1~ 4:
the equipment support comprises an equipment support, the equipment support comprises a support cross beam 2, the length of the support cross beam extends along the left-right direction, an anti-tipping beam 1, the length of the anti-tipping beam extends along the front-back direction, and the anti-tipping beam and the support cross beam form a T-shaped structure. The torsion calibrating device further comprises a connecting screw rod 3 which is used for being arranged in the corresponding screw rod through hole in a penetrating mode, a stop nut 4 is connected to the connecting screw rod through threads on the upper side of the support beam, the bottom of the connecting screw rod is connected with a force measuring sensor through a hinge mechanism 5, the hinge mechanism is provided with a hinge axis, the axis of the hinge axis is arranged in parallel with the axis of a roller to be measured, and the force measuring sensor 6 is connected to the equipment support through the connecting screw rod 3.
The other end of force cell sensor is connected with steel band 7, and steel band 7 is kept away from force cell sensor 6's one end is equipped with the fixed knot who is used for with 11 periphery fixed connection of quilt survey cylinder and constructs, and fixed knot in this embodiment constructs for a length along the magnet 31 of being surveyed cylinder axial extension, and magnet constitution is used for the magnetism that is connected with being surveyed the cylinder and inhales fixed knot and constructs, and steel band thickness is 0.1mm, has in fixed knot structure's upside and is used for around being surveyed the cylinder switching-over and with the tangent switching-over looks section 30 of being surveyed the cylinder on the steel band.
Be provided with on the equipment support and be used for upwards promoting the force cell sensor so that the steel band draws the hoist mechanism of being surveyed the cylinder, the steel band is to being surveyed the cylinder and exert tangential force, and in this embodiment, hoist mechanism includes the jacking jar 8 of jacking in support crossbeam one end bottom, and the bottom of jacking jar 8 is provided with supporting seat 10, and the supporting seat has the holding surface that the slope was arranged, and the upper end and the support crossbeam right-hand member of jacking jar are articulated continuous.
When the device is used, as shown in fig. 3, the left end of the support beam 2 is supported on the left side of a workbench 16 of the chassis dynamometer, the support seat is arranged on the right side of the workbench of the chassis dynamometer, the support beam 2 axially crosses over the measured roller along the direction perpendicular to the measured roller 11, and locks a motor connected with the measured roller, wherein the motor locking refers to fixing a stator and a rotor of the motor together, a magnet 31 at the lower end of a steel strip is fixedly connected with the measured roller in an adsorption manner, a reversing tangent section 30 at the upper side of the magnet is connected with the force sensor 6 after being changed around the measured roller 11, the reversing tangent section is formed by one section of the steel strip, and the steel strip can be connected with the force sensor through a lock catch or a screw manner. The torsion calibrating device further comprises a blocking structure 15 which is used for being matched with one end, far away from the jacking cylinder, of the support cross beam in a blocking mode to prevent the support cross beam from moving left and right, the blocking structure can be a stop block fixedly arranged relative to the workbench, therefore, when the jacking cylinder 8 jacks the right end of the support cross beam, the left end of the support cross beam cannot move left and right, the anti-overturning beam guarantees that the support cross beam cannot turn over front and back in the jacking process, and therefore the stability of the jacking process is guaranteed. When the jacking cylinder jacks a support cross beam, the tangent position of the reversing phase cut section and the measured roller is changed, but the reversing phase cut section is always tangent to the measured roller, due to the freedom degree of the hinge mechanism, the axis of the force sensor is also always tangent to the measured roller, the steel belt transmits torsion to the measured roller, the total length of the fixed structure and the annular phase cut section is less than the circumference of the measured roller, so the reversing phase cut section is of a single-layer structure, the position where the reversing phase cut section is tangent to the measured roller is only the thickness of the layer of the reversing phase cut section, if the thickness of the reversing phase cut section is d, the size of the force arm is only half of d, namely if the thickness of the reversing phase cut section is 0.1mm, the size of the force arm is only 0.05mm and can be completely ignored, and the torsion borne by the measured roller can be accurately calculated, therefore, the accuracy of calibration is ensured, the steel belt is adopted because the steel belt can meet the stress requirement under a thinner size, large elastic deformation cannot be influenced when the steel belt is stretched, the reading of the force sensor cannot be influenced, and the thinner the steel belt is, the smaller the influence of the thickness of the steel belt on the force arm between the tangent position of the steel belt and the measured roller and the center of the roller is. Adopt the support crossbeam structure of present this kind of one end support, one end jacking for this support crossbeam's commonality is stronger, because different producers, the span length of being surveyed the cylinder is different, and its weight is lighter moreover, makes things convenient for the measurement personnel to carry, in this embodiment, chooses the longer support of a length for use, can calibrate the torsion calibrating device of the chassis dynamometer machine of multiple span, only need select connecting screw to wear to adorn in the screw rod perforation of corresponding position can.
The roller to be measured is connected with a rotor (not shown in the figure) of a loading motor, a lever arm 39 is fixed on a stator (not shown in the figure) of the loading motor, one end of the lever arm, which is far away from the roller to be measured, is connected with a torque sensor 40, the torque sensor is a force sensor, after the rotor and the stator are fixed together, after the steel belt 7 applies tangential loading force to the roller to be measured 11, the force can be transmitted to the torque sensor 40 through the rotor, the stator and the lever arm.
In other embodiments of the present invention: the hinge mechanism between the force measuring sensor and the connecting screw rod can also be a hooke hinge mechanism or a universal hinge mechanism; the thickness of the steel strip can be 2mm or 3mm, etc.; the fixing structure is used for fixing the lower end of the steel belt with the periphery of the measured roller, and can also be a viscose fixing structure or a negative pressure sucker fixing structure and the like.
An embodiment 2 of the torsion calibration apparatus of the chassis dynamometer is shown in fig. 5: the difference between the embodiment 2 and the embodiment 1 is that the equipment support is a door-shaped frame, the equipment support comprises a support cross beam 2 and support legs 17 fixed at two ends of the support cross beam, a screw rod through hole is formed in the support cross beam, a connecting screw rod penetrates through the screw rod through hole, the force measuring sensor is connected to the connecting screw rod through a hinge mechanism to be connected with the equipment support, and the lifting mechanism comprises a force application hand wheel 18 in threaded connection with the upper end of the connecting screw rod. When the device is used, the two supporting legs are respectively arranged on the left side and the right side of a workbench of the chassis dynamometer, and the force transducer 6 pulls the measured roller through the steel belt 7 by rotating the force application hand wheel.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (5)
1. The utility model provides a torsion calibrating device of chassis dynamometer which characterized in that: including equipment support and force cell sensor, force cell sensor's one end is passed through hinge mechanisms and is linked to each other with equipment support, and force cell sensor's other one end is connected with the steel band, and the steel band is kept away from force cell sensor's one end is equipped with and is used for being surveyed cylinder periphery fixed connection's fixed knot structure, has on the steel band in fixed knot structure's upside and is used for around being surveyed the cylinder switching-over and with being surveyed the tangent switching-over phase dissection of cylinder, be provided with on the equipment support and be used for upwards promoting force cell sensor so that the steel band draws the hoist mechanism of being surveyed the cylinder.
2. The torsion calibration device of claim 1, wherein: the fixing structure is a magnetic attraction fixing structure, a negative pressure sucker fixing structure or an adhesive fixing structure.
3. The torsion calibration device of claim 1, wherein: the total length of the fixed structure and the reversing phase section is smaller than the perimeter of the roller to be measured.
4. The torsion calibration device according to any one of claims 1 to 3, wherein: the device support is a door-shaped frame and comprises a support cross beam and supporting legs fixed at two ends of the support cross beam, a screw rod perforation is arranged on the support cross beam, a connecting screw rod penetrates through the screw rod perforation, the force cell is connected to the connecting screw rod through the hinge mechanism, so that the force cell is connected with the device support, and the lifting mechanism comprises a force application hand wheel in threaded connection with the upper end of the connecting screw rod.
5. The torsion calibration device according to any one of claims 1 to 3, wherein: the equipment support comprises a support cross beam with the length perpendicular to the axial direction of the roller to be measured, the lifting mechanism comprises a jacking cylinder which is jacked at the bottom of one end of the support cross beam, and the other end of the support cross beam is supported on a workbench of the chassis dynamometer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120374819.XU CN214251373U (en) | 2021-02-18 | 2021-02-18 | Torsion calibrating device of chassis dynamometer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120374819.XU CN214251373U (en) | 2021-02-18 | 2021-02-18 | Torsion calibrating device of chassis dynamometer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214251373U true CN214251373U (en) | 2021-09-21 |
Family
ID=77726836
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120374819.XU Active CN214251373U (en) | 2021-02-18 | 2021-02-18 | Torsion calibrating device of chassis dynamometer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214251373U (en) |
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2021
- 2021-02-18 CN CN202120374819.XU patent/CN214251373U/en active Active
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