Dongfeng Shoe Brake
Dongfeng Shoe Brake
2025-08-16
Dongfeng Seat
Dongfeng Seat
2025-08-16

Dongfeng Shoe Brake Operation Mechanism

Dongfeng Shoe Brake Operation Mechanism
Dongfeng Shoe Brake Operation Mechanism

What is the Dongfeng Shoe Brake Operation Mechanism

  • 1. Pedal Assembly & Force Transmission
    Operator input begins at the Left brake pedal and Right brake pedal, mounted on the Brake pedal shaft. When depressed, the Left pedal actuates the Rockerarm, left pedal, transmitting force through the Pull rod connected via a Pull rod pin. This rod interfaces with the Brake rocker arm inside the brake assembly. A critical Interlock piece links both pedals, enabling simultaneous braking or independent operation for steering assist. The shaft is secured by a Circlip for shaft 24 and features an Angle grease nipple 45°M10 for periodic lubrication of pivot points.
  • 2. Precision Adjustment & Linkage
  • Rod Length Calibration: Brake balance and engagement point are finely tuned using the Adjusting sleeve on the pull rod assembly, locked by Hex. nut M10 and secured against vibration with a Spring split pin 8×18.
  • Leverage Transfer: The Link plate efficiently transfers motion between the pull rod and brake camshaft lever. It’s fastened by Hex. head bolt M8×25 with Spring lock washer 8 for consistent alignment under stress.
  • 3. Positive Return & Retention System
  • Spring Reset: Reliable pedal return after release is ensured by robust External return spring(s), eliminating residual drag.
  • Vibration-Proof Security: Critical pivot points utilize hardened Chamfered plain washer 24 and multiple retention methods:
  • Spring split pin 8×40 for major linkages
  • Split pin 3.2×30 and Split pin 2.5×20 for secondary retainers
  • Spring lock washer 20 under high-load nuts
  • Spring lock washer 10 with Hex. head bolt M10×25 for housing mounts

Parameters of Dongfeng Shoe Brake Operation Mechanism

No. Part No. Name Quantity
1 GB91-86 Split pin 3.2×30 2
2 GB97.2-86 Spring lock washer  20 2
3 GB879-86 Spring split pin 8×40 4
4 300.43A.011 Rockerarm,left pedal 1
5 200.43.127 Pull rod pin 2
6 350-1.43.105 Brake pedal shaft 1
7 200.43.128 Adjusting sleeve 2
8 GB6170-86 Hex. nut M10 4
11 GB879-86 Spring split pin 8×18 1
12 200.43.106 Interlock  piece 1
15 GB93-87 Spring lock washer 10 1
16 GB5783-86 Hex. head bolt  M10×25 1
17 250-1.43.017 Left brake pedal 1
18 400-6.43.016 Right brake pedal 1
19 GB1153-89 Angle grease nipple  45°M10 1
20 GB97.1-86 Chamfered plain washer 24 1
21 GB894.1-86 Circlip for shaft 24 1
22 300.43.107-1 Pull rod 2
23 GB5783-86 Hex. head bolt  M8×25 2
24 GB93-87 Spring lock washer 8 2
25 300.43.110 Link  plate 2
26 200.43.125 External return spring 2
27 200.43.119-1 Brake rocker arm 2
28 GB91-86 Split pin 2.5×20 2
29 400-6.43.014 Right brake 2
30 300.43.112 Paper gasket 2
31 400-6.43.011-2 Support bord weldment 1
32 400-6.43.012 Fixed plank weldment 1
33 GB5783-86 Hex. head bolt  M12×30 2
34 GB93-87 Spring lock washer 10 2
35 GB91-86 Split pin 3.2×20 2
36 GB882-86 Clevis pin with head B10x22 1
38 400-6.43.015 Rotate shafte weldment 1
39 300-6.43.015 Hand brake assembled 1
40 GB6170-86 Hex.nut M12 2
41 250-1.43.102 Fixed axes 1
42 GB894.1-86 Circlip for shaft 10 1
43 450.43.137 Brake bar clevis pin 1
44 300-6.43.014 Hand brake mechanism 1
45 400-6.43.013 Left brake 1
46 400-6.43.017 Erect brake bar 1

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