CN114235440A - Protective horsepower machine for automobile - Google Patents
Protective horsepower machine for automobile Download PDFInfo
- Publication number
- CN114235440A CN114235440A CN202111650864.4A CN202111650864A CN114235440A CN 114235440 A CN114235440 A CN 114235440A CN 202111650864 A CN202111650864 A CN 202111650864A CN 114235440 A CN114235440 A CN 114235440A
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- CN
- China
- Prior art keywords
- roller
- rollers
- block
- automobile
- bottom plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
Abstract
The invention relates to a protective automobile horsepower machine, which effectively solves the problem that an automobile rushes forward suddenly when a horsepower machine roller is suddenly locked; the technical scheme includes that the device comprises a testing unit and two groups of jacking units, wherein the testing 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, an arc-shaped groove coaxial with the rollers is formed in the inner wall of each roller, a switch is fixed at one end, facing the rotation direction of the rollers, of each arc-shaped groove, the other end of each arc-shaped groove is connected with a ball 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 testing unit and correspond to the two groups of rollers in the front-back direction, and the driving wheels are overhead by the jacking units when the automobile rushes forwards; when the roller is stuck, the driving wheel can be quickly suspended, financial loss and casualty accidents caused by sudden forward rush of vehicles are avoided, and the safety of the horse power machine is greatly improved.
Description
Technical Field
The invention relates to the field of automobile-related equipment, in particular to a protective automobile motor.
Background
The device for measuring the power of the driving wheel of the automobile mainly comprises a roller and an eddy current machine connected with the roller in series, wherein the driving wheel of the automobile rides on the roller during measurement, the roller rotates synchronously with the driving wheel, and the driving power of the automobile is measured by measuring the damping power exerted on the roller by the eddy current machine; when drive wheel and horsepower machine roller rotate at a high speed, if the roller blocks suddenly and dies, then the car can rush in the twinkling of an eye violently in the future, cause the vehicle, equipment damage and casualties, lack the protective equipment of this kind of accident at present, generally tie a stay cord at the rear of a vehicle and restrict the vehicle, but the vehicle dashes the stay cord in the twinkling of an eye tightly when the occurence of failure, very easily take place danger and can damage the vehicle, moreover, the pulling force direction of stay cord is difficult to and direction wheel direction is identical completely, the stay cord carries out inclined to one side to draw to the rear of a vehicle and can cause the vehicle to swing the tail even out of control.
Disclosure of Invention
The invention provides a protective automobile horsepower machine which is used for solving the problem that an automobile rushes forward suddenly when a horsepower machine roller is suddenly locked.
A protective 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, the bottom of each first hydraulic cylinder is provided with a pressure relief pipe, and the pressure relief pipe is provided with an electric control pressure relief valve; two groups of horizontal rollers are arranged on the bottom plate, each group of rollers comprises a main roller and an auxiliary roller, the main roller and the auxiliary rollers are arranged in parallel at equal height, the two main rollers are coaxially arranged and connected through a coupler, the two auxiliary rollers are coaxially arranged, one end of the main roller is provided with an eddy current 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 rotation 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, and when any switch is pressed down, the left and right electric control pressure release valves can be powered on and opened;
two sets of jacking units set up in one side of test unit and correspond around with two sets of rollers, every group jacking unit includes a bottom plate and an kicking block, the kicking block is folded and is pressed on the bottom plate and through a plurality of locating pin location, be equipped with the second pneumatic cylinder on the bottom plate, open the kicking block upper end has the low spout of the high one end of one end, be equipped with one in the spout and follow the gliding supporting shoe of spout, a plurality of elasticity fixture blocks are installed to the bottom of spout, the upper end of fixture block is the wedge, elasticity fixture block makes the supporting shoe can only slide to the higher one end of spout.
Every group the bottom block of jacking unit on all wear the threaded rod of a left right direction, the position of the adjustable jacking unit of rotation threaded rod.
And the lower part of the supporting block is provided with a front group of idler wheels and a rear group of idler wheels.
Each side wall of the sliding groove is provided with a limit groove parallel to the sliding groove, and the outer end of the wheel shaft of each roller wheel extends into the limit groove.
The bottom of the sliding chute is provided with a plurality of blind holes which are uniformly distributed along the length, the elastic clamping block is arranged in the blind holes, and the lower end of the elastic clamping block is provided with a third spring.
And a chamfer is arranged at the higher end of the bottom surface of the supporting block.
The threaded rod on be equipped with a driven gear, driven gear meshing has a driving gear, and the driving gear is connected with a driving motor, and driving motor passes through the gear train and drives the threaded rod rotation.
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-shaped grooves, balls, second springs and switches are uniformly distributed in each roller in the circumferential direction, and when any switch is closed, the electric control pressure release valve is electrified.
Each end of the roller is fixed with a first metal disc, the bottom plate is fixed with second metal discs which are in one-to-one corresponding contact 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 stuck, the invention can quickly suspend the driving wheel to lose the grip force so as to cut off the driving force to brake the vehicle, thereby avoiding the financial loss and casualty accidents caused by the rush of the vehicle due to the stuck roller, and greatly improving the safety of the horse power 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 inside the jacking unit.
Fig. 5 is a left side sectional view of the jacking unit.
Fig. 6 is a top view inside the jacking unit.
Figure 7 is a left side cross-sectional view of the roller.
Fig. 8 is a circuit diagram of an electrically controlled pressure relief valve and switch.
Fig. 9 is a schematic diagram of the rear drive vehicle during normal measurement.
FIG. 10 is a schematic view of a rear drive vehicle measuring roller jam.
Fig. 11 is a schematic view of the front-drive vehicle during normal measurement.
FIG. 12 is a schematic view of the front wheel truck when the measuring drum is stuck.
33-wheels, 34-longitudinal beams in the above figures.
Detailed Description
With the help of the attached drawings, the device comprises a testing unit and two groups of jacking units, wherein the testing 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 plurality of first hydraulic cylinders 2, the plurality of first springs 3 are in a rope pulling state after the bottom plate 1 is jacked, a pressure relief pipe 4 is arranged at the bottom of each first hydraulic cylinder 2, an electric control pressure relief valve 5 is arranged on each pressure relief pipe 4, the first hydraulic cylinders 2 can be relieved by the aid of the electric control pressure relief valves 5 when the electric control pressure relief valves 5 are electrified, 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 an auxiliary roller 7, the main roller 6 and the auxiliary roller 7 are arranged in parallel at equal height, the two main rollers 6 are coaxially arranged and connected through a coupler 8, the two auxiliary rollers 7 are coaxially arranged, one end of the main roller 6 is provided with an eddy current machine 9, when a horsepower test is carried out, two driving wheels of an automobile are respectively supported between the main rollers 6 and the auxiliary rollers 7 of the two groups of rollers, the wheels drive the main roller 6 and the auxiliary rollers 7 to rotate, and the horsepower of the driving wheels of the automobile is measured through the eddy current machine 9; the inner wall of each roller is provided with an arc-shaped groove 10 which is coaxial with the roller, 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 round ball 13 through a second spring 12, any one switch 11 is pressed down, the left and right electric control pressure release valves 5 are powered on and opened, when the roller rotates at normal acceleration and deceleration, the round balls 13 can rock at a small amplitude due to inertia but are not enough to touch the switches 11, when the roller is suddenly clamped during rotation, the acceleration is huge, the round balls 13 violently and forwardly impact due to inertia to press down the switches 11 at the end parts of the arc-shaped grooves 10, so that all first hydraulic cylinders 2 release pressure, and the bottom plate 1 rapidly descends under the action of gravity and the first springs 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 the front-back direction, each group of jacking units comprises a bottom block 14 and a top block 15, the top block 15 is overlapped on the bottom block 14 and is positioned by a plurality of positioning pins 16, a second hydraulic cylinder 17 is arranged on the bottom block 14, the top block 15 can be pushed upwards through the second hydraulic cylinder 17, a sliding groove 18 with one high end and one low end is formed in the upper end of the top block 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 the higher end of the sliding groove 18 due to the elastic clamping blocks 20; after the automobile is driven to the test position, the second hydraulic cylinder 17 through jacks the jack blocks 15 upwards until the two supporting blocks 19 support the longitudinal beams on two sides of the automobile chassis, if a certain roller is suddenly clamped, the longitudinal beams of the automobile can be compacted on the two supporting blocks 19 when the bottom plate 1 descends, if the instantaneous forward impact of the automobile is clamped at the roller, the supporting blocks 19 can be driven to slide towards the higher end of the sliding groove 18, the supporting blocks 19 can lift the automobile chassis, and the driving wheels are suspended to lose driving force.
And a threaded rod 21 in the left-right direction penetrates through the bottom block 14 of each jacking unit, the position of each jacking unit can be adjusted by rotating the threaded rod 21, and the jacking units are moved to the positions under the automobile longitudinal beams.
The lower part of the supporting block 19 is provided with a front set of rollers 22 and a rear set of rollers 22, and the rollers 22 support the supporting block 19 so as to reduce the resistance when the supporting block 19 slides 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 shaft 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 sliding groove 18 is provided with a plurality of blind holes 24 which are uniformly distributed along the length, the elastic fixture block 20 is arranged in the blind holes 24, and the lower end of the elastic fixture block 20 is provided with a third spring 25.
The higher end of the bottom surface of the supporting block 19 is provided with a chamfer 26, so that the front elastic fixture block 20 can be smoothly pressed down when the higher 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 placed 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-shaped grooves 10, round balls 13, second springs 12 and switches 11 are uniformly distributed in each roller in the circumference, and when any switch 11 is closed, the electric control pressure release valve 5 is electrified.
Each end of the roller is fixed with a first metal disc 31, the bottom plate 1 is fixed with second metal discs 32 which are in one-to-one corresponding contact with the first metal discs 31, the first metal discs 31 at the two ends of each roller are respectively communicated with the two poles of the switch 11 in the roller, and the second metal discs 32 are respectively communicated with the two poles of the electric control pressure relief valve 5, so that the circuit is communicated when the roller rotates; all the switches 11 are connected in parallel, and all the electrically controlled pressure relief valves 5 are connected in parallel, so that when any one switch 11 is closed, all the electrically controlled pressure relief valves 5 can be electrified and opened.
Before the horsepower test is carried out by using the horsepower testing device, the direction of the jacking unit top block 15 is adjusted according to whether a vehicle to be tested is a front-drive vehicle or a rear-drive vehicle, when the direction of the top block 15 is adjusted, only the top block 15 needs to be moved and turned backwards, and then the positioning pin 16 is aligned with the pin hole and placed on the bottom block 14, if the vehicle is the rear-drive vehicle, the lower end of the top block 15 faces the testing unit, and if the vehicle is the front-drive vehicle, the higher end of the top block 15 faces the testing unit, namely, whether the vehicle is the front-drive vehicle or the rear-drive vehicle, the jacking unit is positioned between the front wheel and the rear wheel, and the higher end of the top block 15 faces the vehicle head.
After the ejector pad 15 is adjusted, the vehicle to be tested is driven to the detection position, two driving wheels are enabled to ride on the two sets of rollers respectively, then the position of the jacking unit is adjusted through the driving threaded rod 21, the supporting blocks 19 of the two sets of jacking units are located under longitudinal beams on two sides of the vehicle, then the second hydraulic cylinder 17 is started to jack the ejector pad 15 and the supporting blocks 19 to support the longitudinal beams of the vehicle, finally, an elastic pull rope is pulled at the tail of the vehicle to assist in stabilizing the vehicle, and the horsepower of the vehicle can be tested by starting the vehicle.
In the test process, the rotating speed of the roller is changed synchronously with the rotating speed of the driving wheel, in the normal acceleration and deceleration process, the ball 13 can shake in a small amplitude due to inertia but is not enough to touch the switch 11, but when the roller is suddenly clamped in rotation, due to huge acceleration, the ball 13 violently rushes forward due to inertia to press down the switch 11 at the end part of the arc-shaped groove 10, any one switch 11 is pressed down to enable the electric control pressure release valve 5 to be electrified and opened, so that all the first hydraulic cylinders 2 release pressure, and the bottom plate 1 rapidly descends under the action of gravity and the first spring 3 to enable the driving wheel to be suspended; because the roller descends and certain delay is ensured, at the moment of roller clamping, the driving wheel and the roller have extremely short contact time, so that the vehicle still rushes forward in a short distance, at the moment, the automobile longitudinal beam is compacted on the supporting block 19, the automobile forward rushes to drive the supporting block 19 to slide towards the higher end of the chute 18, the chassis of the automobile is lifted, the driving wheel is suspended in the air to lose driving force, and the supporting block 19 pops out an elastic clamping block 20 behind the supporting block 19 after sliding forwards so that the supporting block 19 cannot retreat; after the vehicle is in a neutral position or is flamed out, the second hydraulic cylinder 17 is decompressed, the supporting block 19 descends to enable the driving wheels to land and drive the vehicle away.
When the roller is stuck, the switch 11 is pressed down by the inertia of the ball 13 in the roller to enable the roller to descend immediately and separate from the driving wheel, so that the ground gripping force of the driving wheel is reduced sharply, the forward impact force of the roller is reduced, meanwhile, the vehicle chassis is lifted by the jacking unit in the short-distance forward impact process of the vehicle, the driving wheel is suspended completely to lose the ground gripping force, the driving force is cut off to brake the vehicle, financial loss and casualty accidents caused by the sudden forward impact of the vehicle due to the sticking of the roller are avoided, and the safety of a horse power machine is improved greatly.
Claims (10)
1. A protection 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), the bottom of each first hydraulic cylinder (2) is provided with a pressure relief pipe (4), and an electric control pressure relief valve (5) is arranged on each pressure relief pipe (4); two groups of horizontal rollers are arranged on a bottom plate (1), each group of rollers comprises a main roller (6) and an auxiliary roller (7), the main roller (6) and the auxiliary rollers (7) are arranged in parallel at equal height, the two main rollers (6) are coaxially arranged and connected through a coupler (8), the two auxiliary rollers (7) are coaxially arranged, one end of each main roller (6) is provided with an eddy current machine (9), the inner wall of each roller is provided with an arc-shaped groove (10) coaxial with the roller, one end, facing the roller rotating direction, of each arc-shaped groove (10) is fixedly provided with a switch (11), the other end of each arc-shaped groove is connected with a round ball (13) through a second spring (12), any switch (11) is pressed down, and the left and right electric control pressure release valves (5) can be electrically opened;
two sets of jacking units set up in test unit's one side and correspond around with two sets of rollers, every group jacking unit includes a bottom block (14) and a kicking block (15), kicking block (15) are folded and are pressed on bottom block (14) and fix a position through a plurality of locating pins (16), second hydraulic cylinder (17) are equipped with on bottom block (14), open spout (18) that have the one end height one end low in kicking block (15) upper end, be equipped with one in spout (18) and follow gliding supporting shoe (19) of spout (18), a plurality of elasticity fixture block (20) are installed to the bottom of spout (18), the upper end of fixture block is the wedge, elasticity fixture block (20) make supporting shoe (19) can only slide to the higher one end of spout (18).
2. The protection type automobile horsepower machine according to claim 1, wherein a left-right threaded rod (21) is arranged on the bottom block (14) of each group of jacking units in a penetrating mode, and the position of each jacking unit can be adjusted by rotating the threaded rod (21).
3. A protected automobile horsepower machine according to claim 1, wherein said support block (19) is provided with two sets of rollers (22) at the lower portion.
4. A protective automobile engine 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 shaft of each roller (22) extends into the limiting groove (23).
5. The protection type automobile horsepower machine as claimed in claim 1, wherein the bottom of the sliding groove (18) is provided with a plurality of blind holes (24) which are 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).
6. A protected automobile engine according to claim 1, wherein the higher end of the bottom surface of the support block (19) is provided with a chamfer (26).
7. A protective automobile engine according to claim 1, characterized in that the threaded rod (21) is provided with a driven gear (27), the driven gear (27) is engaged 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. A protected automobile horsepower machine according to claim 1, wherein the test unit is placed in a pit (30) with the top side of the rolls leaking out of the pit (30).
9. A protective automobile power machine according to claim 1, wherein at least three groups of arc-shaped grooves (10), round balls (13), second springs (12) and switches (11) are uniformly distributed on the circumference of each roller, and when any one switch (11) is closed, the electrically controlled pressure release valve (5) is electrified.
10. A protective automobile engine according to claim 1, wherein each end of the roller is fixed with a first metal disc (31), the bottom plate (1) is fixed with second metal discs (32) which are in one-to-one contact with the first metal discs (31), the first metal discs (31) at two ends of each roller are respectively communicated with two poles of a switch (11) in the roller, and the second metal discs (32) are respectively communicated with two poles of an electrically controlled pressure relief valve (5); all the switches (11) are connected in parallel, and all the electronic control pressure relief valves (5) are connected in parallel.
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 |
|---|---|
| CN114235440A true CN114235440A (en) | 2022-03-25 |
| CN114235440B 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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| Publication number | Publication date |
|---|---|
| CN114235440B (en) | 2023-07-21 |
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