CN203639851U - Deceleration strip - Google Patents

Abstract

A deceleration strip comprises a deceleration body and a reinforcing block, wherein the deceleration body is located on the ground, and the reinforcing block is located underground. An arc-shaped deceleration surface is fixed to the deceleration body, an embedded spring and a rotating shaft are arranged in the deceleration body, one end of the embedded spring is fixedly connected with the interior of the deceleration body, the other end of the embedded spring is connected with the rotating shaft, a metal block is fixedly connected to the reinforcing block, and the rotating shaft and the metal block are fixedly connected. According to the deceleration strip, a vehicle driving at high speed can be efficiently decelerated in a forced mode through difference of counter impact force caused by the speed change, passing the deceleration strip, of the vehicle, and therefore passing comfort of the low-speed vehicle is guaranteed.

Description

A kind of deceleration strip

Technical field

A kind of deceleration strip of the utility model, belongs to traffic safety facilities technical field, particularly relates to highway deceleration strip field.

Background technology

Deceleration strip of the prior art is broadly divided into two classes: be fixed on link table Noodles and lifting class.For fixed class deceleration strip, when vehicle by time must have a climbing and the quick process of descending, the vehicle passing through can be produced and be jolted.The deceleration strip of lifting class, though strengthened road-ability, has related to portions of electronics device, and price is more expensive, complex structure, and chance water etc. are fragile, and durability is poor.

Utility model content

The deficiency existing for current highway deceleration strip, the utility model provides a kind of deceleration strip, can make vehicle steadily pass through, and its deceleration is simultaneously comfortable.

The technical scheme that the utility model is taked is: a kind of deceleration strip, comprise the reduction body that rest on the ground, be positioned at underground reinforcement block, described reduction body is fixed with arc deceleration face, in described reduction body, be provided with embedded spring, turning cylinder, described embedded spring one end is fixedly connected with reduction body inside, other end connection of rotating axle, on reinforcement block, be fixedly connected with metal derby, described turning cylinder is fixedly connected with metal derby.

Described reduction body offers reserving hole, and spring, turning cylinder are positioned at reserving hole.

Described reinforcement block is secured by bolts in the groove that underground offers.

Described ground is provided with elastic cushion block, and elastic cushion block is positioned at reduction body one side.

Described reduction body bottom is provided with thin portion structure, described thin portion structure is one and prevents that deceleration strip from ejecting a stopping means on ground by rear bounce-back at vehicle, overlapped and form by: another section of projection that a section of protrusion, ground groove of reduction body bottom fixedly stretches out.

Described arc deceleration face is quality of rubber materials arcwall face.

Described reduction body adopts cast steel, is a fan-shaped hollow structure.

A kind of deceleration strip of the utility model, with wheel contact surface be quality of rubber materials arcwall face, make wheel have the space of a rotation while rolling advancing, be easier to slow-moving vehicle wheel reduction body depressed, thereby steadily cosily pass through.Spring adopts powerful embedded spring, makes device more succinct, can automatically reset simultaneously.Thin portion structure keeps the outstanding ground of deceleration strip constant height, can reduce deceleration strip and automatically reset time, thereby may be ejected the danger of scratch vehicle chassis.

A kind of deceleration strip of the utility model, utilizes the difference of the anti-force that vehicle brings by deceleration strip velocity variations, realizes the vehicle of running at high speed is forced and slowed down efficiently, guarantees the comfortableness that slow-moving vehicle passes through.

Accompanying drawing explanation

Below in conjunction with drawings and Examples, the utility model is described in further detail:

Fig. 1 is the utility model deceleration strip structural representation;

Fig. 2 is the reduction body structural representation of the utility model deceleration strip;

Fig. 3 is the rotation shaft structure schematic diagram of the utility model band spring;

Fig. 4 is the utility model reinforcement block structural representation.

The specific embodiment

As shown in Figure 1 to 4, a kind of deceleration strip, comprise the reduction body 2 that rest on the ground, be positioned at underground reinforcement block 7, described reduction body 2 is fixed with arc deceleration face 1, in described reduction body 2, be provided with embedded spring 4, turning cylinder 3, described embedded spring 4 one end are fixedly connected with reduction body 2 inside, other end connection of rotating axle 3, are fixedly connected with metal derby 5 on reinforcement block 7, and described turning cylinder 3 is fixedly connected with iron block 5.Described reduction body 2 offers reserving hole, and spring 4, turning cylinder 3 are positioned at reserving hole.Described reinforcement block 7 is fixed in the groove of offering for 10 times on ground by bolt 11.Described ground 10 is provided with elastic cushion block 8, and elastic cushion block 8 is positioned at reduction body 2 one sides.

Described reduction body 2 bottoms are provided with thin portion structure 6, described reduction body 2 bottoms are provided with thin portion structure 6, described thin portion structure 6 is one and prevents that deceleration strip from ejecting a stopping means on ground by rear bounce-back at vehicle, overlapped and form by: another section of projection that a section of protrusion, ground groove of reduction body 2 bottoms fixedly stretches out.

Described arc deceleration face 1 is quality of rubber materials arcwall face.Described reduction body 2 adopts cast steel, is a fan-shaped hollow structure.

Rotating shaft 3 is connected with metal derby 5 by welding, and metal derby 5 is weldingly connected with the reinforcement block 7 on ground, and reinforcement block 7 is fixed on road by high-strength swell fixture.

Operating principle:

As shown in Figure 1, by theorem of impulse:

Ft=m△V （1）

The reaction force of F---deceleration strip to vehicle;

The collision time of t---wheel and deceleration strip;

The quality of m---vehicle;

△ V---vehicle by before and after deceleration strip speed difference.

The quality m of same car is identical, because the time t of shock deceleration strip is enough little, is greater than at a slow speed by the △ V of vehicle at a high speed by changes in vehicle speed amount △ V.The time t passing through due to express ₁be less than the time t that slow train passes through ₂, can be obtained fom the above equation: F _{hurry up}>F _slowly.

In the vertical direction, is had by Newton's second law:

F _y=Fsinα=ma （2）

Therefore: a _{hurry up}>a _slowly, express velocity variations is upwards larger than slow train.So the sense of jolting upwards producing is larger, reach the different object of comfortableness of speed car.

The selection foundation of arc surface: adopt the difference of straight contact surface and arc contact surface to be: adopt the contact point of arc surface lower than the contact point of plane, α angle is larger, by design formulas:

F _x=Fcosα （3）

Know: F _xfor lateral resistance, F _yfor vertical resistance, α is larger, F _xless, the horizontal resistance of vehicle is reduced, more easily steadily weighing apparatus passes through.

The selection of deceleration strip size

h=R ₁sinβ （4）

$\sin \mathrm{\α}=\frac{R_2}{R_1+R_2}---\left(5\right)$

In formula, the angle between α-tire and deceleration strip contact point and line and the horizon of the tire centre of form;

The angle of β-deceleration strip, β >=α;

The height of h-deceleration strip, h<R ₂;

R ₁the radius of-deceleration strip;

R ₂the radius of-wheel.

Can obtain the expression formula about deceleration strip height by (4) and (5) formula:

$h=R_2(1-\sin \mathrm{\&alpha;})\frac{\sin \mathrm{\&beta;}}{\sin \mathrm{\&alpha;}}---\left(6\right)$

According to condition β>=α, h < R ₂the radius of wheel R setting with specific road conditions ₂, required deceleration strip size is in optimized selection.

Implementation step:

Quality of rubber materials arcwall face is fixed in reduction body 2 with bolt, embedded spring 4 and turning cylinder 3 are placed in the reserving hole of reduction body 2, the inner side, the other end that embedded spring 4 one end are welded in to deceleration strip main body 2 are welded on turning cylinder 3.Ground is dug into the shape of reinforcement block 7, and reinforcement block 7 is fixed in groove with bolt 11, iron block is welded on reinforcement block 7, by the middle part of turning cylinder 3 and iron block welding.Automobile low-speed passes through, and wheel 9 contacts with arc deceleration face 1, and deceleration strip can produce an impact force F to wheel 9, is decomposed into horizontal force Fx, vertical power Fy, and Fx, Fy are very little.Elastic cushion block 8 plays and slows down the percussion of deceleration strip to ground simultaneously.When wheel 9 rotates forward under Action of Gravity Field, reduction body 2 is subdued by wheel 9, after wheel 9 passes through, under the rebound effect of embedded spring 4, deceleration strip main body automatically resets, and under the control action of thin portion structure 6, overlapped preventing is ejected, and prevents that reduction body 2 from ejecting ground and causing disabler.Another section of projection that simultaneously ground groove fixedly stretches out prevents that one section of protrusion of reduction body 2 from poking tire.Vehicle is steadily passed through, without big bump sense, embody comfortableness.

Vehicle high-speed passes through, and when V is very large, automobile contacts arc deceleration face 1 fast, and deceleration strip can produce an impact force F to wheel 9, is decomposed into horizontal force Fx, vertical power Fy, and Fx, Fy are all larger.Elastic cushion block 8 plays and slows down the percussion of deceleration strip to ground simultaneously.Fx is horizontal impact power, realizes forced deceleration effect; Fy produces instantaneous vertical acceleration, vehicle is produced and jolt, and plays the effect that alerting drivers slows down, and embodies high efficiency.

Claims (7)

1. a deceleration strip, comprise the reduction body (2) that rest on the ground, be positioned at underground reinforcement block (7), it is characterized in that, described reduction body (2) is fixed with arc deceleration face (1), in described reduction body (2), be provided with embedded spring (4), turning cylinder (3), described embedded spring (4) one end is fixedly connected with reduction body (2) inside, other end connection of rotating axle (3), on reinforcement block (7), be fixedly connected with metal derby (5), described turning cylinder (3) is fixedly connected with metal derby (5).

2. a kind of deceleration strip according to claim 1, is characterized in that, described reduction body (2) offers reserving hole, and spring (4), turning cylinder (3) are positioned at reserving hole.

3. a kind of deceleration strip according to claim 1, is characterized in that, described reinforcement block (7) is fixed in the groove that underground offers by bolt (11).

4. a kind of deceleration strip according to claim 1, is characterized in that, described ground (10) are provided with elastic cushion block (8), and elastic cushion block (8) is positioned at reduction body (2) one sides.

5. a kind of deceleration strip according to claim 1, it is characterized in that, described reduction body (2) bottom is provided with thin portion structure (6), described thin portion structure (6) is one and prevents that deceleration strip from ejecting a stopping means on ground by rear bounce-back at vehicle, overlapped and form by: another section of projection that a section of protrusion, ground groove of reduction body (2) bottom fixedly stretches out.

6. a kind of deceleration strip according to claim 1, is characterized in that, described arc deceleration face (1) is quality of rubber materials arcwall face.

7. a kind of deceleration strip according to claim 1, is characterized in that, described reduction body (2) adopts cast steel, is a fan-shaped hollow structure.

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