CN114235440B - Protective type automobile horsepower machine - Google Patents
Protective type automobile horsepower machine Download PDFInfo
- Publication number
- CN114235440B CN114235440B CN202111650864.4A CN202111650864A CN114235440B CN 114235440 B CN114235440 B CN 114235440B CN 202111650864 A CN202111650864 A CN 202111650864A CN 114235440 B CN114235440 B CN 114235440B
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- China
- Prior art keywords
- roller
- rollers
- jacking
- bottom plate
- sliding groove
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M17/00—Testing of vehicles
- G01M17/007—Wheeled or endless-tracked vehicles
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L3/00—Measuring torque, work, mechanical power, or mechanical efficiency, in general
- G01L3/24—Devices for determining the value of power, e.g. by measuring and simultaneously multiplying the values of torque and revolutions per unit of time, by multiplying the values of tractive or propulsive force and velocity
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Automobile Manufacture Line, Endless Track Vehicle, Trailer (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The invention relates to a protective type automobile horsepower machine, which effectively solves the problem that a vehicle can suddenly and forwards impact when a roller of the horsepower machine is suddenly blocked; the technical scheme includes that the test unit comprises a horizontal bottom plate, a plurality of hydraulic cylinders and a plurality of first springs are arranged below the bottom plate, two groups of horizontal rollers are arranged on the bottom plate, arc grooves coaxial with the rollers are formed in the inner wall of each roller, a switch is fixed at one end of each arc groove, which faces the rotating direction of the roller, and a ball is connected to the other end of each arc groove through a second spring, and all the hydraulic cylinders are decompressed when any one switch is pressed down; the two groups of jacking units are arranged on one side of the test unit and correspond to the two groups of rollers in front and back, and the jacking units can overhead the driving wheels when the automobile is rushed forward; when the roller is jammed, the driving wheel can be suspended rapidly, financial loss and casualty accidents caused by sudden forward impact of the vehicle are avoided, and the safety of the horsepower machine is improved greatly.
Description
Technical Field
The invention relates to the field of automobile related equipment, in particular to a protective automobile horsepower machine.
Background
The device for measuring the power of the driving wheel of the automobile mainly comprises a roller and an eddy current machine connected in series with the roller, wherein the driving wheel of the automobile rides on the roller during measurement, the roller synchronously rotates along with the driving wheel, and the driving power of the automobile is measured by measuring the damping power applied to the roller by the eddy current machine; when the driving wheel and the horsepower machine roller rotate at a high speed, if the roller is suddenly blocked, the automobile can suddenly rush forward in the moment, so that the damage and casualties of the automobile and equipment are caused, the protection equipment for such accidents is lacking at present, the automobile is generally limited by bolting a pull rope at the tail of the automobile, but the front-thrust rope of the automobile can be instantly tightened when the accidents happen, danger is very easy to occur and the automobile can be damaged, in addition, the pulling direction of the pull rope is difficult to be completely consistent with the direction of the steering wheel, and the pull rope can bias the tail of the automobile, so that the tail of the automobile is even out of control.
Disclosure of Invention
The invention provides a protective type automobile horsepower machine which is used for solving the problem that a vehicle can suddenly rush forward when a roller of the horsepower machine is suddenly blocked.
The protective type automobile horsepower machine comprises a test unit and two groups of jacking units, wherein the test unit comprises a horizontal bottom plate, a plurality of first hydraulic cylinders and a plurality of first springs are arranged below the bottom plate, a pressure relief pipe is arranged at the bottom of each first hydraulic cylinder, and an electric control pressure relief valve is arranged on each pressure relief pipe; two groups of horizontal rollers are arranged on the bottom plate, each group of rollers comprises a main roller and a secondary roller, the main roller and the secondary rollers are arranged side by side at equal height, the two main rollers are coaxially arranged and connected through a coupling, the two secondary rollers are coaxially arranged, one end of each main roller is provided with an electric vortex machine, the inner wall of each roller is provided with an arc-shaped groove coaxial with the roller, one end of each arc-shaped groove facing the rotating direction of the roller is fixedly provided with a switch, the other end of each arc-shaped groove is connected with a ball through a second spring, any one of the switches is pressed down, and the left and right electric control pressure relief valves are electrified and opened;
two sets of jacking units set up in the one side of test unit and correspond around two sets of rollers, and every jacking unit of group includes a backing block and a kicking block, and the kicking block is folded and is pressed on the backing block and fix a position through a plurality of locating pins, is equipped with the second pneumatic cylinder on the backing block, and the spout that has one end to be high one end to be low is opened to the kicking block upper end, is equipped with one in the spout and follows the gliding supporting shoe of spout, and a plurality of elasticity fixture blocks are installed to the bottom of spout, and the upper end of fixture block is the wedge, and elasticity fixture block makes the supporting shoe only can slide to the higher one end of spout.
The bottom blocks of each group of jacking units are respectively penetrated with a left-right threaded rod, and the positions of the jacking units can be adjusted by rotating the threaded rods.
The lower part of the supporting block is provided with a front group of rollers and a rear group of rollers.
Each side wall of the chute is provided with a limiting groove parallel to the chute, and the outer end of the wheel shaft of each roller extends into the limiting groove.
The bottom of spout open and have a plurality of blind holes along length equipartition, elastic fixture block installs in the blind hole, and elastic fixture block lower extreme installs the third spring.
One end of the supporting block, which is higher in bottom surface, is provided with a chamfer angle.
The threaded rod is provided with a driven gear which is meshed with a driving gear, the driving gear is connected with a driving motor, and the driving motor drives the threaded rod to rotate through a gear set.
The test unit is arranged in a pit, and the upper side of the roller leaks out of the pit.
At least three groups of arc grooves, round balls, second springs and switches are uniformly distributed in the circumference of each roller, and any switch is closed to electrify the electric control pressure release valve.
Each end of the roller is fixedly provided with a first metal disc, the bottom plate is fixedly provided with a second metal disc in one-to-one correspondence with the first metal discs, the first metal discs at the two ends of each roller are respectively communicated with two poles of a switch in the roller, and the second metal discs are respectively communicated with two poles of an electric control pressure release valve; all the switches are connected in parallel, and all the electric control pressure relief valves are connected in parallel.
When the roller is jammed, the invention can quickly lead the driving wheel to be suspended and lose the grip force so as to cut off the driving force to brake the vehicle, thereby avoiding financial loss and casualty accidents caused by sudden forward impact of the vehicle due to the jamming of the roller and greatly improving the safety of the horsepower machine.
Drawings
Fig. 1 is a front view of the present invention.
Fig. 2 is a left side view of the present invention.
Fig. 3 is a top view of the present invention.
Fig. 4 is a front view of the inside of the jacking unit.
Fig. 5 is a left side cross-sectional view of the jacking unit.
Fig. 6 is a top view within the jacking unit.
Fig. 7 is a left side cross-sectional view of the roll.
Fig. 8 is a circuit diagram of an electronically controlled pressure relief valve and switch.
Fig. 9 is a schematic diagram of the rear-drive vehicle at the time of normal measurement.
Fig. 10 is a schematic diagram of a rear drive measurement roller stuck.
Fig. 11 is a schematic diagram of the front-drive vehicle at the time of normal measurement.
FIG. 12 is a schematic illustration of a front drive measurement roller stuck.
33-wheels, 34-stringers in the above figures.
Detailed Description
The invention comprises a test unit and two groups of jacking units, wherein the test unit comprises a horizontal bottom plate 1, a plurality of first hydraulic cylinders 2 and a plurality of first springs 3 are arranged below the bottom plate 1, the bottom plate 1 is stably supported by the first hydraulic cylinders 2, the plurality of first springs 3 are in a pull rope state after the bottom plate 1 is jacked, a pressure release pipe 4 is arranged at the bottom of each first hydraulic cylinder 2, an electric control pressure release valve 5 is arranged on the pressure release pipe 4, the first hydraulic cylinders 2 are depressurized by energizing the electric control pressure release valves 5, and the bottom plate 1 moves downwards under the action of the first springs 3; two groups of horizontal rollers are arranged on the bottom plate 1, each group of rollers comprises a main roller 6 and a secondary roller 7, the main roller 6 and the secondary roller 7 are arranged side by side at equal height, the two main rollers 6 are coaxially arranged and are connected through a coupler 8, the two secondary rollers 7 are coaxially arranged, one end of the main roller 6 is provided with an eddy current machine 9, when horsepower test is carried out, two driving wheels of an automobile are respectively supported between the main roller 6 and the secondary roller 7 of the two groups of rollers, the wheels drive the main roller 6 and the secondary roller 7 to rotate, and horsepower of the driving wheels of the automobile is measured through the eddy current machine 9; an arc-shaped groove 10 coaxial with the roller is formed in the inner wall of each roller, one end of the arc-shaped groove 10 facing the rotating direction of the roller is fixedly provided with a switch 11, the other end of the arc-shaped groove is connected with a ball 13 through a second spring 12, any one switch 11 is pressed down, the left and right electric control pressure relief valves 5 are electrified and opened, when the roller rotates at normal acceleration and deceleration, the ball 13 shakes slightly due to inertia, but is insufficient to touch the switch 11, when the roller is suddenly clamped during rotation, the ball 13 can violently forward punch the switch 11 at the end part of the arc-shaped groove 10 due to inertia, so that all the first hydraulic cylinders 2 are depressurized, and the bottom plate 1 rapidly descends under the action of gravity and the first spring 3;
the two groups of jacking units are arranged on one side of the testing unit and correspond to the two groups of rollers in front and back, each group of jacking units comprises a bottom block 14 and a jacking block 15, the jacking blocks 15 are overlapped on the bottom blocks 14 and positioned through a plurality of positioning pins 16, a second hydraulic cylinder 17 is arranged on the bottom blocks 14, the jacking blocks 15 can be pushed upwards through the second hydraulic cylinder 17, a chute 18 with one high end and one low end is arranged at the upper end of the jacking blocks 15, a supporting block 19 capable of sliding along the chute 18 is arranged in the chute 18, a plurality of elastic clamping blocks 20 are arranged at the bottom of the chute 18, the upper ends of the clamping blocks are wedge-shaped, and the supporting blocks 19 can only slide towards one higher end of the chute 18 through the elastic clamping blocks 20; after the automobile is started to a testing position, the jacking blocks 15 are jacked up by the second hydraulic cylinders 17 until the two supporting blocks 19 support longitudinal beams on two sides of the automobile chassis, if a certain roller suddenly clamps, the longitudinal beams of the automobile can be compacted on the two supporting blocks 19 while the bottom plate 1 descends, and if the automobile is rushed forward in the moment of clamping the roller, the supporting blocks 19 can be driven to slide towards one higher end of the sliding groove 18, and the supporting blocks 19 can lift the automobile chassis, so that driving wheels are suspended and lose driving force.
The bottom blocks 14 of each group of jacking units are respectively penetrated with a left-right threaded rod 21, and the positions of the jacking units can be adjusted by rotating the threaded rods 21 so as to move the jacking units to the position right below the automobile longitudinal beams.
The lower part of the supporting block 19 is provided with a front group of rollers 22 and a rear group of rollers 22, and the rollers 22 support the supporting block 19 so as to reduce the resistance of the supporting block 19 when sliding along the sliding groove 18.
Each side wall of the sliding groove 18 is provided with a limiting groove 23 parallel to the sliding groove 18, and the outer end of the wheel axle of each roller 22 extends into the limiting groove 23, so that the supporting block 19 is limited, and the supporting block 19 cannot tilt forwards or backwards.
The bottom of the chute 18 is provided with a plurality of blind holes 24 uniformly distributed along the length, the elastic clamping block 20 is arranged in the blind holes 24, and the lower end of the elastic clamping block 20 is provided with a third spring 25.
The upper end of the bottom surface of the supporting block 19 is provided with a chamfer 26, so that the front elastic clamping block 20 can be smoothly pressed down when the upper end of the sliding groove 18 of the supporting block 19 slides.
The threaded rod 21 is provided with a driven gear 27, the driven gear 27 is meshed with a driving gear 28, the driving gear 28 is connected with a driving motor 29, and the driving motor 29 drives the threaded rod 21 to rotate through a gear set.
The test unit is arranged in a pit 30, the upper side of the roller leaks out of the pit 30, and after the driving wheel of the automobile is driven onto the roller, the front wheel and the rear wheel are approximately at the same height.
At least three groups of arc grooves 10, round balls 13, second springs 12 and switches 11 are uniformly distributed in the circumference of each roller, and any switch 11 is closed to electrify the electric control pressure relief valve 5.
Each end of the roller is fixedly provided with a first metal disc 31, the bottom plate 1 is fixedly provided with a second metal disc 32 in one-to-one correspondence with the first metal discs 31, the first metal discs 31 at two ends of each roller are respectively communicated with two poles of the switch 11 in the roller, and the second metal discs 32 are respectively communicated with two poles of the electric control pressure release valve 5, so that a circuit is communicated when the roller rotates; all the switches 11 are connected in parallel, and all the electric control pressure relief valves 5 are connected in parallel, so that any one switch 11 is closed to enable all the electric control pressure relief valves 5 to be electrified and opened.
Before the horsepower test is performed by using the invention, the direction of the jacking unit jacking block 15 is firstly adjusted according to whether the vehicle to be tested is a front drive vehicle or a rear drive vehicle, when the direction of the jacking block 15 is adjusted, the jacking block 15 is only required to be lifted and turned to be directed to the rear, and then the positioning pin 16 is aligned with the pin hole and placed on the bottom block 14, if the vehicle is a rear drive vehicle, the lower end of the jacking block 15 faces the test unit, and if the vehicle is a front drive vehicle, the higher end of the jacking block 15 faces the test unit, namely, whether the vehicle is a front drive vehicle or a rear drive vehicle, the jacking unit is ensured to be positioned between the front wheel and the rear wheel, and the higher end of the jacking block 15 faces the vehicle head.
After the jacking block 15 is adjusted, the vehicle to be tested is driven to a detection position, two driving wheels are respectively ridden on the two groups of rollers, then the threaded rod 21 is driven to adjust the position of the jacking units, the supporting blocks 19 of the two groups of jacking units are located under longitudinal beams on two sides of the automobile, then the second hydraulic cylinder 17 is started to jack the jacking block 15 and the supporting blocks 19 to support the longitudinal beams of the automobile, and finally an elastic pull rope is pulled at the tail to assist in stabilizing the vehicle, so that the horsepower of the automobile can be started to be tested.
In the test process, the rotating speed of the roller synchronously changes with the rotating speed of the driving wheel, in the normal acceleration and deceleration process, the ball 13 can shake slightly due to inertia but is insufficient to touch the switch 11, but when the roller is suddenly clamped during rotation, the ball 13 can violently forward punch to press down the switch 11 at the end part of the arc-shaped groove 10 due to inertia, any switch 11 is pressed down to enable the electric control relief valve 5 to be electrified and opened, so that all the first hydraulic cylinders 2 are relieved, the bottom plate 1 is rapidly lowered under the action of gravity and the first spring 3, and the driving wheel is suspended; the roller descends with certain hysteresis, so that the driving wheel has extremely short contact time with the roller at the moment of clamping the roller, the vehicle can still rush forward a short distance, at the moment, the longitudinal beam of the vehicle is compacted on the supporting block 19, the supporting block 19 is driven by the forward punching of the vehicle to slide towards the higher end of the chute 18, the chassis of the vehicle is lifted to suspend the driving wheel and lose driving force, and the elastic clamping block 20 behind the supporting block 19 pops out after the supporting block 19 slides forwards to prevent the supporting block 19 from backing; after the vehicle is put in neutral or flameout, the second hydraulic cylinder 17 is depressurized, and the supporting block 19 descends to enable the driving wheel to land and the vehicle to be driven away.
When the roller is jammed, the switch 11 is pressed down by the inertia of the ball 13 in the roller to enable the roller to immediately descend and separate from the driving wheel, so that the gripping force of the driving wheel is sharply reduced, the forward-rushing force of the driving wheel is reduced, meanwhile, the lifting unit lifts the chassis of the vehicle in the short-distance forward-rushing process of the vehicle, so that the driving wheel is completely suspended to lose the gripping force, the driving force is cut off, the vehicle is braked, financial loss and casualty accidents caused by sudden forward-rushing of the vehicle due to the jamming of the roller are avoided, and the safety of the horsepower machine is greatly improved.
Claims (8)
1. The protective type automobile horsepower machine is characterized by comprising a test unit and two groups of jacking units, wherein the test unit comprises a horizontal bottom plate (1), a plurality of first hydraulic cylinders (2) and a plurality of first springs (3) are arranged below the bottom plate (1), a pressure release pipe (4) is arranged at the bottom of each first hydraulic cylinder (2), an electric control pressure release valve (5) is arranged on each pressure release pipe (4), and all electric control pressure release valve (5) circuits are connected in parallel; two groups of horizontal rollers are arranged on the bottom plate (1), each group of rollers comprises a main roller (6) and a secondary roller (7), the main roller (6) and the secondary roller (7) are arranged side by side at equal height, the two main rollers (6) are coaxially arranged and connected through a coupler (8), the two secondary rollers (7) are coaxially arranged, one end of each main roller (6) is provided with an eddy current machine (9), at least three arc-shaped grooves (10) coaxial with the rollers are uniformly distributed in each roller in circumference, one end of each arc-shaped groove (10) facing the rotating direction of the roller is fixedly provided with a switch (11), the other end of each arc-shaped groove is connected with a ball (13) through a second spring (12), and all the switches (11) in each roller are connected in parallel; each end of each roller is fixedly provided with a first metal disc (31), a bottom plate (1) is fixedly provided with a second metal disc (32) in one-to-one correspondence with the first metal discs (31), the first metal discs (31) at the two ends of each roller are respectively communicated with two poles of a switch (11) in the roller, the second metal discs (32) are respectively communicated with two poles of an electric control pressure relief valve (5), and therefore all the switches (11) in all the rollers are connected in parallel, any one switch (11) is pressed down, and all the electric control pressure relief valves (5) are electrified to be opened;
two sets of jacking units are arranged on one side of the testing unit and correspond to the two sets of rollers in front and back, each set of jacking unit comprises a bottom block (14) and a jacking block (15), the jacking blocks (15) are overlapped on the bottom blocks (14) and positioned through a plurality of positioning pins (16), the second hydraulic cylinders (17) are arranged on the bottom blocks (14), a sliding groove (18) with one high end and one low end is formed in the upper ends of the jacking blocks (15), a supporting block (19) capable of sliding along the sliding groove (18) is arranged in the sliding groove (18), a plurality of elastic clamping blocks (20) are arranged at the bottom of the sliding groove (18), the upper ends of the clamping blocks are wedge-shaped, and the supporting block (19) can only slide towards one higher end of the sliding groove (18).
2. The protective type automobile horsepower machine according to claim 1, wherein each group of the jacking units is provided with a threaded rod (21) penetrating in the left-right direction on the bottom block (14), and the position of the jacking units can be adjusted by rotating the threaded rod (21).
3. The horsepower engine of claim 1, wherein the lower portion of the support block (19) is provided with a front roller (22) and a rear roller (22).
4. The protective type automobile horsepower machine according to claim 1, wherein each side wall of the sliding groove (18) is provided with a limiting groove (23) parallel to the sliding groove (18), and the outer end of the wheel axle of each roller (22) extends into the limiting groove (23).
5. The protective type automobile horsepower machine according to claim 1, wherein a plurality of blind holes (24) are formed in the bottom of the sliding groove (18) and uniformly distributed along the length, the elastic clamping blocks (20) are installed in the blind holes (24), and a third spring (25) is installed at the lower ends of the elastic clamping blocks (20).
6. The protective type automobile horsepower machine according to claim 1, wherein a chamfer (26) is provided at the end of the support block (19) having the higher bottom surface.
7. The protective type automobile horsepower machine according to claim 2, wherein the threaded rod (21) is provided with a driven gear (27), the driven gear (27) is meshed with a driving gear (28), the driving gear (28) is connected with a driving motor (29), and the driving motor (29) drives the threaded rod (21) to rotate through a gear set.
8. The protective automotive horsepower machine of claim 1, wherein the test unit is disposed in a pit (30) and the upper side of the rollers leak out of the pit (30).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111650864.4A CN114235440B (en) | 2021-12-31 | 2021-12-31 | Protective type automobile horsepower machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111650864.4A CN114235440B (en) | 2021-12-31 | 2021-12-31 | Protective type automobile horsepower machine |
Publications (2)
| Publication Number | Publication Date |
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| CN114235440A CN114235440A (en) | 2022-03-25 |
| CN114235440B true CN114235440B (en) | 2023-07-21 |
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ID=80744649
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111650864.4A Active CN114235440B (en) | 2021-12-31 | 2021-12-31 | Protective type automobile horsepower machine |
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| Country | Link |
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| CN (1) | CN114235440B (en) |
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| CN113624513A (en) * | 2021-08-06 | 2021-11-09 | 天津摩托车质量监督检验所 | Device for detecting performance of unmanned two-wheel motorcycle |
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| DE19529284C1 (en) * | 1995-08-09 | 1996-10-24 | Mc Micro Compact Car Ag | Vehicle test stand adapted for 4-wheel drive vehicle |
| US6360591B1 (en) * | 2000-03-02 | 2002-03-26 | Burke E. Porter Machinery Company | Method of controlling a chassis dynamometer |
| CN2612579Y (en) * | 2003-04-14 | 2004-04-21 | 聂建伟 | Apparatus of detecting automobile anti-locking braking system performance |
| CN201156014Y (en) * | 2007-05-22 | 2008-11-26 | 上海交大神舟汽车设计开发有限公司 | Static detection experimental bench for automobile stability control system |
| CN202216851U (en) * | 2011-08-26 | 2012-05-09 | 北京新联铁科技发展有限公司 | Wheel set running-in test stand for rail communication locomotive and vehicle |
| CN104568478B (en) * | 2015-01-07 | 2017-04-12 | 南车戚墅堰机车车辆工艺研究所有限公司 | Dynamic loading device of railway locomotive drive component |
| CN206531643U (en) * | 2017-01-05 | 2017-09-29 | 贵州中航交通科技有限公司 | The free roller of double rear bridge driven automobiles |
| CN107253480B (en) * | 2017-06-23 | 2019-10-25 | 北京新能源汽车股份有限公司 | vehicle control method and system |
| CN107764568A (en) * | 2017-11-16 | 2018-03-06 | 成都益佳平科技有限公司 | A kind of Vehicle Chassis Dynamic Tests detecting system |
| CN108152046B (en) * | 2017-12-13 | 2019-07-30 | 重庆厚全科技发展有限公司 | Road simulation dynamometer support |
| JP2021146303A (en) * | 2020-03-20 | 2021-09-27 | 本田技研工業株式会社 | Vibration exciter |
| CN112367638A (en) * | 2021-01-12 | 2021-02-12 | 华东交通大学 | Intelligent frequency spectrum selection method for vehicle-vehicle communication of urban rail transit vehicle |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2594794Y (en) * | 2003-01-10 | 2003-12-24 | 东方电机控制设备有限公司 | Rotation rate signal devices |
| CN113624513A (en) * | 2021-08-06 | 2021-11-09 | 天津摩托车质量监督检验所 | Device for detecting performance of unmanned two-wheel motorcycle |
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| CN114235440A (en) | 2022-03-25 |
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