CN203358563U

CN203358563U - Ramp starting assistant device

Info

Publication number: CN203358563U
Application number: CN 201320426236
Authority: CN
Inventors: 车培平; 王善健; 吴梅江; 梁勋乾; 刘志勇
Original assignee: Beiqi Foton Motor Co Ltd
Current assignee: Beiqi Foton Motor Co Ltd
Priority date: 2013-07-17
Filing date: 2013-07-17
Publication date: 2013-12-25
Anticipated expiration: 2023-07-17

Abstract

The utility model relates to the technical field of vehicles, and discloses a ramp starting assistant device. The ramp starting assistant device comprises a ratchet wheel, a pawl and a cam, wherein the ratchet wheel is coaxially connected with a brake drum of a brake and is provided with outer teeth which are eccentric along a reverse direction; the pawl is connected to a pull line of the brake and is provided with outer teeth which are eccentric along a running direction; the cam is arranged between two brake shoes of the brake and is rigidly connected to the pawl; the pawl is separated from the ratchet wheel when the pull line is tightened; the pawl is engaged with the ratchet wheel when the pull line is loosen. As the pawl and the ratchet wheel are adopted for single-way braking, and the single-way braking is controlled through an operating handle in a drive cab, a car when sliding is braked automatically once the braking function is started; as the braking is in a single way, the car can be restarted conveniently after being braked. The ramp starting assistant device has a simple structure and relatively low cost, is easy to popularization, and can improve safety performance.

Description

Ramp start assisting device

Technical field

The utility model relates to the vehicle technology field, particularly relates to a kind of ramp start assisting device.

Background technology

Emergency brake system, when stopping, can be given power-assisted of automobile, makes automobile not slip car, and traditional braking during standstill is to utilize the parking shift in parking brake or automatic catch to pin transmission shaft or trailing wheel.

At present, common vehicle adopts brake-applying handle to control centre brake by bracing wire, unclamping parking brake while starting to walk on level land directly starts to walk, traditional car brakeing is two-way, as shown in Figure 1, operation Parking handle, bracing wire 1 pulls swinging strut 2, swinging strut 2 is rigidly connected with cam 3, cam 3 rotates with swinging strut 2, brake strap 4 is strutted, after strutting, brake strap 4 contacts with brake wheel 5, realize braking, all irremovable before and after vehicle after braking, when on half way up the mountain, Parking starts to walk, need the power-transfer clutch semi-linkage to coordinate braking simultaneously, this starting-up process is loaded down with trivial details, and poor stability, when especially more for loading, uphill starting is more difficult, the easy car phenomenon of slipping of vehicle.

In addition, the more complicated electronic control system of employing is arranged on high-grade car, realize ramp start assisting function, self-actuating brake when automobile can be realized slipping car by inductor, CPU.And the electronic control system adopted on this high-grade car, cost is higher, is difficult for universal.

The utility model content

(1) technical matters that will solve

The purpose of this utility model is to provide a kind of ramp start assisting device, so that the starting after car brakeing.

(2) technical scheme

In order to solve the problems of the technologies described above, a kind of ramp start assisting device that the utility model provides, it comprises:

Ratchet, coaxially be connected with the brake wheel of drg, has along the external tooth of astern direction bias;

Ratchet, be connected with the bracing wire of drg, has the external tooth that follows car direction bias;

Cam, be located between two brake straps of described drg and be rigidly connected with described ratchet;

Strain described bracing wire, described ratchet separates with ratchet; Unclamp described bracing wire, described ratchet and the engagement of described ratchet.

Further, described cam is provided with boss, and described ratchet is provided with mounting hole, and described mounting hole is through described boss, and in described mounting hole and the below that is positioned at described boss is provided with spring, and the two ends of described spring prop up respectively described boss and ratchet; While straining described bracing wire, described spring is in compressive state.

Further, described boss is square.

Further, described spring is stage clip.

Further, described apparatus for starting also comprises pull bar, and an end of described pull bar is connected with described bracing wire, and the other end is connected with described ratchet through the back-plate of described drg, on described back-plate, has on the chute moved for described pull bar.

(3) beneficial effect

A kind of ramp start assisting device that technique scheme provides, adopt pawl ratchet to carry out one-way brake, by operating handle in operator's compartment, controlled, while enabling this braking function, vehicle slips the car self-actuating brake, because braking is unidirectional, after braking, again start to walk convenient, it is simple in structure, and cost is lower, be easy to popularize, can improve safety performance.

The accompanying drawing explanation

Fig. 1 is car brake of the prior art;

Fig. 2 is the structural representation under state of ramp of the present utility model start assisting device;

Fig. 3 is the structural representation under another state of start assisting device of ramp of the present utility model;

Fig. 4 is ratchet control principle drawing in the utility model.

Wherein: 1, bracing wire; 2, swinging strut; 3, cam; 4, brake strap; 5, brake wheel; 10, bracing wire; 20, swinging strut; 30, cam; 31, boss; 40, brake strap; 50, brake wheel; 60, ratchet; 70, ratchet; 71, spring; 80, back-plate; 90, pull bar.

The specific embodiment

Below in conjunction with drawings and Examples, the specific embodiment of the present utility model is described in further detail.Following examples are used for the utility model is described, but are not used for limiting scope of the present utility model.

As shown in Figures 2 and 3, a kind of ramp of the present utility model start assisting device, it comprises: ratchet 70, to be located in drg and coaxially to be connected with the brake wheel 50 of drg, it has along the external tooth of astern direction bias; Ratchet 70, be connected with the bracing wire 10 of drg, has the external tooth that follows car direction bias; Cam 30, be located between two brake straps 40 of drg and be rigidly connected with ratchet 70.The direction of arrow in Fig. 2 and Fig. 3 is direction of traffic.

As shown in Figure 2, tension bracing wire 10, can make ratchet 70 and ratchet 60 separate, and ratchet 60 can roll together with brake wheel.

As shown in Figure 3, unclamp bracing wire 10, ratchet 70 and ratchet 60 engagements, because the external tooth of ratchet 70 and ratchet 60 is eccentric tooth, therefore refer to produce a braking on direction, outer teeth directional direction of traffic bias due to ratchet 70, and the outer teeth directional astern direction bias of ratchet 60, therefore, when the external tooth of the external tooth of ratchet 70 and ratchet 60 is meshed, if vehicle follows car, direction is advanced, between ratchet 60 and ratchet 70, relative sliding occurs, do not rotate, the cam 30 be connected with ratchet 70 can not rotate, brake strap 40 is not connected with brake wheel 50, vehicle is not braked, if vehicle slips car backward along astern direction, ratchet 60 rotates counterclockwise, and drive ratchet 70 rotates, the cam 30 be connected with ratchet 70 also can and then rotate, cam 30 rotates can open brake strap 40, make two brake straps separate and contact with brake wheel 50, make vehicle be braked, thereby make vehicle move to be obstructed backward, realize braking brake.

In conjunction with Fig. 3 and Fig. 4, apparatus for starting of the present utility model also comprises pull bar 90, and an end of this pull bar 90 is connected with bracing wire 10, and the other end is connected with ratchet 70 through the back-plate 80 of drg, wherein, on back-plate 80, has on the chute moved for pull bar 90.Preferably, pull bar 90 is connected with bracing wire by swinging strut 20.

The cam 30 of the present embodiment is provided with boss 31, and ratchet 70 is provided with mounting hole, and mounting hole is through boss 31, and in mounting hole and the below that is positioned at boss 31 is provided with spring 71, and the two ends of spring prop up respectively boss 31 and ratchet 70; During tension bracing wire 10, spring is in compressive state.

Preferably, spring 71 is stage clip.Rule or the fitfull polygons such as that boss 31 can be is square, trapezoidal, triangle, be preferably square.

While not starting braking and ramp start assisting function, bracing wire is under tension, the power of bracing wire 10 passes to ratchet 70 by pull bar 90, ratchet 70 under tensions, stage clip is compressed, and ratchet 70 is forced to separate with ratchet 60, brake strap 40 does not contact with brake wheel 50, brake wheel 50 is free to rotate, and vehicle is not braked, and can move freely.

When Vehicle Driving Cycle to half way up the mountain needs parked starting, open ramp start assisting function, close common parking brake function, operation Parking handle is controlled bracing wire 10, make bracing wire loosening, pull bar slides in chute, and the elastic force of stage clip is released, and ratchet 70 direction to ratchet 60 under the elastic force effect of stage clip moves and meshes with ratchet 60; Now, if vehicle follows car, direction is advanced, and between ratchet 60 and ratchet 70, relative sliding occurs, and does not rotate, and vehicle is not braked; If vehicle slips car backward along astern direction, ratchet 60 rotates counterclockwise, and drive ratchet 70 rotates, with ratchet 70, by boss 31 band moving cams 30, also can and then rotate, cam 30 rotations can strut brake strap 40 and make brake strap 40 contact with brake wheel 50, vehicle is braked, and vehicle mobile being obstructed is backward realized braking brake.

The above is only preferred implementation of the present utility model; should be understood that; for those skilled in the art; under the prerequisite that does not break away from the utility model know-why; can also make some improvement and replacement, these improvement and replacement also should be considered as protection domain of the present utility model.

Claims

1. a ramp start assisting device, is characterized in that, comprising:

2. ramp as claimed in claim 1 start assisting device, it is characterized in that, described cam is provided with boss, described ratchet is provided with mounting hole, described mounting hole is through described boss, in described mounting hole and the below that is positioned at described boss is provided with spring, and the two ends of described spring prop up respectively described boss and ratchet; While straining described bracing wire, described spring is in compressive state.

3. ramp as claimed in claim 2 start assisting device, is characterized in that, described boss is square.

4. ramp as claimed in claim 2 start assisting device, is characterized in that, described spring is stage clip.

5. as the described ramp of claim 1-4 any one start assisting device, it is characterized in that, described apparatus for starting also comprises pull bar, one end of described pull bar is connected with described bracing wire, the other end is connected with described ratchet through the back-plate of described drg, on described back-plate, has on the chute moved for described pull bar.