CN117723186A - Single-wheel dynamometer for chassis of heavy-duty vehicle based on cylindrical bead belt transmission - Google Patents
Single-wheel dynamometer for chassis of heavy-duty vehicle based on cylindrical bead belt transmission Download PDFInfo
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- CN117723186A CN117723186A CN202311699515.0A CN202311699515A CN117723186A CN 117723186 A CN117723186 A CN 117723186A CN 202311699515 A CN202311699515 A CN 202311699515A CN 117723186 A CN117723186 A CN 117723186A
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 22
- 238000000034 method Methods 0.000 description 8
- 238000012360 testing method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
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- 238000002474 experimental method Methods 0.000 description 1
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Abstract
The invention belongs to the technical field of automobile chassis dynamometer, and particularly relates to a single-wheel dynamometer for a heavy-duty vehicle chassis based on cylindrical bead belt transmission. The invention provides a single-wheel dynamometer for a chassis of a heavy-duty vehicle based on cylindrical bead belt transmission, and aims to solve the problem of low dynamometer precision of the chassis dynamometer in the prior art. A single-wheel dynamometer of a heavy-duty vehicle chassis based on cylindrical bead belt transmission comprises a base, wherein a dynamometer table with multiple degrees of freedom relative to the base is arranged on the base; the dynamometer table comprises a supporting plate, two rollers are rotatably connected to the supporting plate, a power belt is arranged between the two rollers, a support is fixed on the supporting plate, balls are arranged on the support and rotatably connected to the support, and balls are uniformly distributed on the support; the roller, the ball and the power belt can be matched with each other to simulate the road surface. The working conditions of normal running, braking and the like of the tire can be simulated more realistically, and the accuracy of the dynamometer is improved.
Description
Technical Field
The invention belongs to the technical field of automobile chassis dynamometer, and particularly relates to a single-wheel dynamometer for a heavy-duty vehicle chassis based on cylindrical bead belt transmission.
Background
The chassis dynamometer is special metering equipment for measuring the output power, torque (or driving force) and rotating speed (or speed) of driving wheels of an automobile. The chassis dynamometer mainly comprises a roller mechanism, a power absorbing device, a control and measurement system and an auxiliary device. Some chassis dynamometers are additionally provided with flywheel systems and the like, and acceleration performance, sliding performance and the like of the automobile can be measured. The disk dynamometer is an indoor bench test device for testing the performance of automobile power performance, multi-station emission index, fuel index and the like. The automobile chassis dynamometer simulates a road surface through a roller, calculates a road simulation equation, and simulates by a loading device to realize accurate simulation of various working conditions of an automobile; the method can be used for loading and debugging of the automobile and diagnosing faults of the automobile under the load condition; the integrated measuring system is formed by the integrated measuring system, a five-gas analyzer, a transmission smoke meter, an engine tachometer and a computer automatic control system together so as to measure the automobile exhaust emission under different working conditions.
The chassis dynamometer is convenient to use and reliable in performance and is not influenced by external conditions. On the premise of not disassembling the automobile, the service performance of each system and each component of the automobile can be accurately and rapidly detected. The chassis dynamometer can be used for automobile science experiments and also can be used for maintenance and detection.
However, the heavy chassis dynamometer in the prior art is inconvenient to perform dynamometer on the wheel set, and in addition, various pavements cannot be simulated in the dynamometer process, so that the dynamometer precision is low.
Disclosure of Invention
The invention provides a single-wheel dynamometer for a chassis of a heavy-duty vehicle based on cylindrical bead belt transmission, and aims to solve the problem of low dynamometer precision of the chassis dynamometer in the prior art.
In order to solve the technical problems, the invention adopts the following technical scheme:
a single-wheel dynamometer of a heavy-duty vehicle chassis based on cylindrical bead belt transmission comprises a base, wherein a dynamometer table with multiple degrees of freedom relative to the base is arranged on the base;
the dynamometer table comprises a supporting plate, two rollers are rotatably connected to the supporting plate, a power belt is arranged between the two rollers, a supporting space is defined by the power belt, a support device for supporting the power belt is arranged in the supporting space, the support device is positioned between the two rollers, and the support device supports the power belt above the support device;
the support is fixed in the backup pad, be provided with the ball on the support, the ball rotate connect in the support, the equipartition has on the support the ball.
Preferably, the mounting plate is arranged on the supporting plate and is fixed on the supporting plate through bolts, a rotating shaft is arranged on the roller, and a shaft hole matched with the rotating shaft is formed in the mounting plate.
Based on the technical scheme: the mounting plate for mounting the roller is arranged on the support plate, the mounting plate is fixed on the support plate through bolts, and the roller is easy to assemble, so that the operation is very convenient when the roller needs maintenance or replacement.
Preferably, the mounting plate is provided with two plates, the roller is positioned between the two mounting plates, and a rolling bearing is arranged between the rotating shaft and the shaft hole.
Based on the technical scheme: the mounting panel has two, and the cylinder is located between two mounting panels, and the both ends of cylinder are all supported by the mounting panel, and cylinder intensity is high.
Preferably, the support further comprises a plate body, the balls are rotatably connected to the plate body, and the balls are uniformly distributed on the upper surface of the plate body.
Based on the technical scheme: the support still includes the plate body, and the ball rotates to be connected in the plate body, can set up more balls on the plate body to make dynamometer and the wheelset that awaits measuring have better contact performance.
Preferably, the plate body is provided with an assembly groove for accommodating the ball, the depth of the assembly groove is larger than the radius of the ball, and the depth of the assembly groove is smaller than the diameter of the ball.
Based on the technical scheme: the plate body is provided with an assembly groove for accommodating the ball, the ball is arranged in the assembly groove, and the ball is not easy to separate from the assembly groove.
Preferably, the support further comprises a vertical plate, the plate body is fixed on the support plate through the vertical plate, the plate body and the vertical plate are of an integrated structure, and the vertical plate is fixed on the support plate through bolts.
Based on the technical scheme: the support further comprises a vertical plate, the plate body is fixed on the support plate through the vertical plate, the vertical plate can effectively support the plate body at a target position, the plate body has a correct position, and then the balls can effectively support the power belt.
Preferably, a supporting rib is arranged between the vertical plate and the plate body, and the supporting rib, the vertical plate and the plate body are of an integrated structure.
Based on the technical scheme: the support ribs are arranged between the vertical plates and the plate body, so that the connection strength between the vertical plates and the plate body is improved, and the plate body can effectively support the power belt.
Preferably, the center position of the base is provided with a positioning ball, the supporting plate is provided with a positioning cover matched with the positioning ball, a positioning groove is arranged in the positioning cover, the depth of the positioning groove is smaller than the diameter of the positioning ball, the depth of the positioning groove is larger than the radius of the positioning ball, and a height adjuster for adjusting the angle of the supporting plate relative to the base is further arranged between the supporting plate and the base.
Based on the technical scheme: the center position department of base is provided with the locating ball, is provided with in the backup pad with locating ball complex locating cover, the backup pad can rotate and can not follow the diameter direction removal of locating ball around the sphere center of locating ball for the base for the backup pad has higher stability for the base.
Preferably, the positioning ball and the base are in an integrated structure, and the positioning cover and the supporting plate are in an integrated structure.
Based on the technical scheme: the positioning ball and the base are of an integrated structure, and the positioning ball and the base have high connection strength. The locating cover and the supporting plate are of an integrated structure, and the supporting plate and the locating cover have high connection strength.
Preferably, the height adjuster comprises a hydraulic cylinder fixed on the base and a piston rod arranged on the hydraulic cylinder, a contact plate contacted with the supporting plate is arranged at the upper end of the piston rod, a ball body is arranged at the upper end of the piston rod, a groove body matched with the ball body is arranged on the contact plate, the depth of the groove body is larger than the radius of the ball body, and the depth of the groove body is smaller than the diameter of the ball body.
Based on the technical scheme: the upper end of the piston rod is provided with a sphere, the contact plate is provided with a groove body matched with the sphere, the contact plate is in contact with the support plate but not fixed, and the support plate is not interfered with the height adjuster in the process of inclining the support plate relative to the base.
The beneficial effects of the invention are as follows:
the base is provided with a dynamometer table with a plurality of degrees of freedom relative to the base; the dynamometer table comprises a supporting plate, two rollers are rotatably connected to the supporting plate, a power belt is arranged between the two rollers, a support is fixed on the supporting plate, balls are arranged on the support and rotatably connected to the support, and balls are uniformly distributed on the support; the roller, the ball and the power belt can be matched with each other to simulate the road surface. The working conditions of normal running, braking and the like of the tire can be simulated more realistically, and the accuracy of the dynamometer is improved.
The dynamometer table has a plurality of degrees of freedom relative to the base, can simulate the tire steering working condition, turning and local uneven ground working condition under the working condition of a straight road surface better, and the testing effect is more ideal.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a single wheel dynamometer of a heavy-duty vehicle chassis based on a bead belt drive of the present invention.
Fig. 2 is a schematic diagram of the internal structure of a single-wheel dynamometer of a heavy-duty vehicle chassis based on a cylindrical bead belt transmission.
FIG. 3 is a schematic view of a base in a single wheel dynamometer of a heavy-duty vehicle chassis based on a bead belt drive of the present invention.
FIG. 4 is a schematic diagram of a mid-to-bottom regulator of a single wheel dynamometer for a heavy-duty vehicle chassis based on a bead belt drive of the present invention.
The reference numerals in the figures illustrate:
1-a base; 11-positioning balls; 12-height adjuster; 13-a hydraulic cylinder; 14-a piston rod; 15-contact plate; 16-sphere; 2-a dynamometer table; 21-a support plate; 211-positioning cover; 22-roller; 23-a power belt; 24-mounting plates; 25-rotating shaft; 3-a supporter; 31-balls; 32-plate body; 33-riser.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention. All other embodiments, which can be obtained by a person skilled in the art without creative efforts, are included in the protection scope of the present invention based on the embodiments of the present invention.
Referring to fig. 1 to 4, the embodiment provides a heavy-duty vehicle chassis single-wheel dynamometer based on a cylindrical bead belt transmission, which comprises a base 1, wherein a dynamometer table 2 with a plurality of degrees of freedom relative to the base 1 is arranged on the base 1;
the dynamometer table 2 comprises a supporting plate 21, two rollers 22 are rotatably connected to the supporting plate 21, a power belt 23 is arranged between the two rollers 22, the power belt 23 encloses a supporting space, a supporting device 3 for supporting the power belt 23 is arranged in the supporting space, the supporting device 3 is positioned between the two rollers 22, and the supporting device 3 supports the power belt 23 above the supporting device 3;
the support 3 is fixed on the support plate 21, the support 3 is provided with balls 31, the balls 31 are rotatably connected to the support 3, and the balls 31 are uniformly distributed on the support 3.
The roller 22 is not required to be driven by a power mechanism, after the wheel set contacts with the power belt 23, the wheel set drives the power belt 23 to rotate, the power belt 23 is deformed after being pressed by the wheel set, and the wheel set contacts with the balls 31 through the power belt 23.
Referring to fig. 1 to 4, in particular: the roller is characterized in that a mounting plate 24 for mounting the roller 22 is arranged on the supporting plate 21, the mounting plate 24 is fixed on the supporting plate 21 through bolts, a rotating shaft 25 is arranged on the roller 22, and a shaft hole matched with the rotating shaft 25 is formed in the mounting plate 24.
The mounting plates 24 are provided with two plates, the roller 22 is positioned between the two mounting plates 24, and a rolling bearing is arranged between the rotating shaft 25 and the shaft hole.
The mounting plate 24 may also be secured to the support plate 21 by other means, for example, the mounting plate 24 may be welded to the support plate 21.
Wherein: the support 3 further comprises a plate 32, the balls 31 are rotatably connected to the plate 32, and the balls 31 are uniformly distributed on the upper surface of the plate 32.
The plate 32 is provided with an assembly groove for accommodating the ball 31, the depth of the assembly groove is larger than the radius of the ball 31, and the depth of the assembly groove is smaller than the diameter of the ball 31.
Referring to fig. 1 to 4, in particular: the balls 31 may be fitted into the fitting grooves by a thermal fitting method, for example, the balls 31 may be made to have a temperature lower than that of the plate body 32, and shrinkage may be generated due to the lower temperature of the balls 31, so that the balls 31 may be fitted into the fitting grooves.
Wherein: the support 3 further comprises a vertical plate 33, the plate body 32 is fixed on the support plate 21 through the vertical plate 33, the plate body 32 and the vertical plate 33 are of an integrated structure, and the vertical plate 33 is fixed on the support plate 21 through bolts.
Support ribs are arranged between the vertical plates 33 and the plate body 32, and the support ribs, the vertical plates 33 and the plate body 32 are of an integrated structure.
The support ribs may be welded between the vertical plate 33 and the plate body 32, and the cross-sectional shape of the support ribs may be triangular.
Specifically, the center position department of base 1 is provided with location ball 11, be provided with on the backup pad 21 with location ball 11 complex positioning cover 211, be provided with the constant head tank in the positioning cover 211, the degree of depth of constant head tank is less than the diameter of location ball 11, and, the degree of depth of constant head tank is greater than the radius of location ball 11, backup pad 21 with still be provided with between the base 1 the regulation backup pad 21 for the height adjuster 12 of base 1 angle.
The positioning ball 11 and the base 1 are in an integral structure, and the positioning cover 211 and the supporting plate 21 are in an integral structure.
Referring to fig. 3 to 4, the height adjuster 12 includes a hydraulic cylinder 13 fixed to the base 1 and a piston rod 14 provided on the hydraulic cylinder 13, a contact plate 15 contacting with the support plate 21 is provided at an upper end of the piston rod 14, a ball 16 is provided at an upper end of the piston rod 14, a groove body engaged with the ball 16 is provided on the contact plate 15, a depth of the groove body is greater than a radius of the ball 16, and a depth of the groove body is smaller than a diameter of the ball 16.
The sphere 16 and the groove body can be assembled by a thermal assembly method, and the positioning cover 211 and the positioning sphere 11 can also be assembled by a thermal assembly method.
The hydraulic cylinder 13 may also be fixed to the base 1 in other ways.
The working principle of the embodiment is as follows:
the single-wheel dynamometer of the heavy-duty vehicle chassis based on the cylindrical bead belt transmission is arranged on the ground, and in the dynamometer process, a wheel set is required to be in contact with the power belt 23, namely, the wheel set is positioned above the power belt 23, and then auxiliary equipment such as a computer is utilized for dynamometer. The motor car belt is supported by adopting the balls 31, and the power belt 23 cannot bear the weight of a single wheel of a tested heavy-duty vehicle, so a ball 31 structure is added below the power belt 23 for supporting the power belt 23; the friction force is reduced while the support is realized, and the overall transmission efficiency is high.
Through setting up altitude mixture control ware 12 and location ball 11, location cover 211, can simulate under straight road surface operating mode better that the tire turns to operating mode, turns, the local uneven operating mode in ground, the test process is more close the real running environment of car.
The invention is not limited to the above-mentioned alternative embodiments, on the premise of not contradicting each other, can combine arbitrarily between every scheme; any person who is in the light of the present invention can obtain other products in various forms, however, any changes in shape or structure are within the scope of the present invention as defined by the claims.
Claims (10)
1. A heavy-duty vehicle chassis single-wheel dynamometer based on a cylindrical bead belt transmission is characterized in that: the device comprises a base, wherein a dynamometer table with a plurality of degrees of freedom relative to the base is arranged on the base;
the dynamometer table comprises a supporting plate, two rollers are rotatably connected to the supporting plate, a power belt is arranged between the two rollers, a supporting space is defined by the power belt, a support device for supporting the power belt is arranged in the supporting space, the support device is positioned between the two rollers, and the support device supports the power belt above the support device;
the support is fixed in the backup pad, be provided with the ball on the support, the ball rotate connect in the support, the equipartition has on the support the ball.
2. The heavy-duty vehicle chassis single-wheel dynamometer based on the bead belt transmission of claim 1, wherein: the roller is characterized in that a mounting plate for mounting the roller is arranged on the supporting plate, the mounting plate is fixed on the supporting plate through bolts, a rotating shaft is arranged on the roller, and a shaft hole matched with the rotating shaft is formed in the mounting plate.
3. The heavy-duty vehicle chassis single-wheel dynamometer based on the bead belt transmission of claim 2, wherein: the mounting plate has two boards, the cylinder is located two between the mounting plate, be provided with antifriction bearing between pivot and the shaft hole.
4. The heavy-duty vehicle chassis single-wheel dynamometer based on the bead belt transmission of claim 1, wherein: the support also comprises a plate body, the balls are rotationally connected to the plate body, and the balls are uniformly distributed on the upper surface of the plate body.
5. The heavy-duty vehicle chassis single-wheel dynamometer based on the bead belt transmission, as claimed in claim 4, is characterized in that: the plate body is provided with an assembly groove for accommodating the ball, the depth of the assembly groove is larger than the radius of the ball, and the depth of the assembly groove is smaller than the diameter of the ball.
6. The heavy-duty vehicle chassis single-wheel dynamometer based on the bead belt transmission, as claimed in claim 5, is characterized in that: the support further comprises a vertical plate, the plate body is fixed on the support plate through the vertical plate, the plate body and the vertical plate are of an integrated structure, and the vertical plate is fixed on the support plate through bolts.
7. The heavy-duty vehicle chassis single-wheel dynamometer based on the bead belt transmission of claim 6, wherein: the support rib is arranged between the vertical plate and the plate body, and the support rib, the vertical plate and the plate body are of an integrated structure.
8. A heavy-duty vehicle chassis single-wheel dynamometer based on a bead belt drive according to any one of claims 1 to 7, characterized in that: the positioning device is characterized in that a positioning ball is arranged at the center position of the base, a positioning cover matched with the positioning ball is arranged on the supporting plate, a positioning groove is formed in the positioning cover, the depth of the positioning groove is smaller than the diameter of the positioning ball, the depth of the positioning groove is larger than the radius of the positioning ball, and a height adjuster for adjusting the angle of the supporting plate relative to the base is further arranged between the supporting plate and the base.
9. The heavy-duty vehicle chassis single-wheel dynamometer based on the bead belt transmission of claim 7, wherein: the locating ball and the base are of an integrated structure, and the locating cover and the supporting plate are of an integrated structure.
10. The heavy-duty vehicle chassis single-wheel dynamometer based on the bead belt transmission of claim 8, wherein: the height adjuster comprises a hydraulic cylinder fixed on the base and a piston rod arranged on the hydraulic cylinder, a contact plate contacted with the supporting plate is arranged at the upper end of the piston rod, a sphere is arranged at the upper end of the piston rod, a groove body matched with the sphere is arranged on the contact plate, the depth of the groove body is larger than the radius of the sphere, and the depth of the groove body is smaller than the diameter of the sphere.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311699515.0A CN117723186A (en) | 2023-12-11 | 2023-12-11 | Single-wheel dynamometer for chassis of heavy-duty vehicle based on cylindrical bead belt transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311699515.0A CN117723186A (en) | 2023-12-11 | 2023-12-11 | Single-wheel dynamometer for chassis of heavy-duty vehicle based on cylindrical bead belt transmission |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117723186A true CN117723186A (en) | 2024-03-19 |
Family
ID=90208144
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311699515.0A Pending CN117723186A (en) | 2023-12-11 | 2023-12-11 | Single-wheel dynamometer for chassis of heavy-duty vehicle based on cylindrical bead belt transmission |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117723186A (en) |
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2023
- 2023-12-11 CN CN202311699515.0A patent/CN117723186A/en active Pending
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