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Braking device related to assisted control for the tractor vehicle and its trailer

机译:与牵引车及其挂车的辅助控制有关的制动装置

摘要

1,184,491. Vehicle braking systems. REGIE NATIONALE DES USINES RENAULT. 13 June, 1967 [2 Aug., 1966], No. 27334/67. Heading F2F. An hydraulic braking system has a pair of brake pedals acting mechanically on a master cylinder and on control elements in the hydraulic circuit, the pressure in the master cylinder controlling a servo unit supplied by an hydraulic pump, the servo unit operating trailer brakes and also increasing the pressure in the master cylinder. The Figure shows a system with two pedals 9, 10 operating individual right and left wheel brakes of a tractor, such that if both pedals are simultaneously depressed, both brakes are operated at the same pressure. With the pedal not pressed (as 10) the brake line 13 is connected to a reservoir 25 through open valve 6 but cut off from the master cylinder 1 by closed valve 4. When a pedal is pressed (as 9) a cam 33 allows the spring-loaded valve 5 to close and cut-off the brake line 12 from the reservoir, while another cam 32 opens valve 3 to connect line 12 with the master cylinder via lines 34 and 35. Cam 33 also presses on a pin 37 at the end of a lever 11 to operate the master cylinder push member 14, the pressure being communicated to the chambers of valves 3 and 4 to operate one or both brakes. This pressure is also applied via line 20 to raise a piston 22 and valve 23 in the servo unit 2 so that a chamber 19 is disconnected from the reservoir 25 and placed in communication with a chamber 16 connected via 15 to an hydraulic pump (not shown). Chamber 16 also communicates via chamber 17 and line 18 to other hydraulic units on the vehicle. The upward movement of valve 23 throttles the connection between 16 and 17 so that pressure rises in chamber 16; this is fed back through chamber 19 and line 7 to give servo assistance to the master cylinder and through line 8 to operate the trailer brakes. The pressure rise is also applied through passage 29 to the top of the valve 23 which thus takes up an equilibrium position when the pressures on it balance. This position is also influenced by the upward movement throttling the hydraulic pump line at 42. If other units on the vehicle are in use such that the pressure in line 18 is higher than required to operate the brakes, the equilibrium position is such as to close the connection between 16 and 19, so that the braking pressure is independent of the pressure in line 18. If the pressure in line 20 rises above a certain value, a disc 30 shuts this off from the valve 23, and the equilibrium position of the latter is then determined by a spring 24. The apparatus shown may be constructed as a number of sub-units.
机译:1,184,491。车辆制动系统。里贾纳国家国防军。 1967年6月13日[1966年8月2日],编号27334/67。标题为F2F。液压制动系统具有一对制动踏板,这些制动踏板机械地作用在主缸和液压回路中的控制元件上,主缸中的压力控制由液压泵提供的伺服单元,伺服单元操作挂车制动器并且还增加主缸中的压力。该图示出了具有两个踏板9、10的系统,该两个踏板分别操作拖拉机的左右车轮制动器,使得如果同时踩下两个踏板,则两个制动器以相同的压力操作。在不踩下踏板(如10)的情况下,制动管路13通过打开的阀6连接到油箱25,但通过关闭的阀4与主缸1断开。当踩下踏板(如9)时,凸轮33允许制动踏板13制动。弹簧阀5来关闭和切断储油缸的制动管路12,而另一个凸轮32则打开阀3以便通过管路34和35将管路12与主缸相连接。凸轮33还在轴上压在销37上。在操作主缸推动件14的杠杆11的一端,压力被传递到阀3和4的腔,以操作一个或两个制动器。该压力也通过管线20施加,以升高伺服单元2中的活塞22和阀23,从而使腔室19与储存器25断开连接,并与通过15连接至液压泵(未示出)的腔室16连通。 )。腔室16还经由腔室17和管线18与车辆上的其他液压单元连通。阀23的向上运动会节流16和17之间的连接,从而使腔室16中的压力升高;它通过腔室19和管路7反馈,以为主缸提供伺服辅助,并通过管路8来操纵挂车制动器。压力升高也通过通道29施加到阀23的顶部,因此当阀上的压力平衡时,阀占据了平衡位置。该位置还受到油压泵管路在42处的向上节流的影响。如果使用车辆上的其他单元,以使管路18中的压力高于操作制动器所需的压力,则平衡位置会关闭16和19之间的连接,因此制动压力与管线18中的压力无关。如果管线20中的压力升高到某个值以上,则阀瓣30会将其与阀23断开,阀的平衡位置然后由弹簧24确定后者。所示的装置可以构造成许多子单元。

著录项

  • 公开/公告号FR1494896A

    专利类型

  • 公开/公告日1967-09-15

    原文格式PDF

  • 申请/专利权人 RENAULT;REGIE NATIONALE DES USINES RENAULT;

    申请/专利号FR19660071817

  • 发明设计人

    申请日1966-08-02

  • 分类号B60T11/10;B60T11/16;B60T13/16;B62D11/08;B62D13;

  • 国家 FR

  • 入库时间 2022-08-23 13:58:42

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