Search

CN-224211046-U - Braking mechanism for trailer and trailer

CN224211046UCN 224211046 UCN224211046 UCN 224211046UCN-224211046-U

Abstract

The application provides a braking mechanism for a trailer and the trailer, and belongs to the technical field of tractor braking. Aiming at the problem that the braking effect is poor when a traction rod of a trailer is unhooked accidentally, the application provides a braking mechanism for the trailer, which comprises a trigger piece, a transmission piece, a reset piece and a hydraulic braking component; the hydraulic braking assembly comprises wheel brakes arranged on wheels of a vehicle body and a piston cylinder arranged on the vehicle body, wherein the piston cylinder can push braking liquid into the wheel brakes to realize braking, the trigger piece is arranged on the traction rod and rotates synchronously with the traction rod, the transmission piece is arranged on the vehicle body, one end of the transmission piece can be in contact with the trigger piece, the other end of the transmission piece is connected with a piston rod of the piston cylinder and can convert the pressing of the trigger piece into the pushing of the braking liquid in the piston cylinder by the piston rod so as to enable the piston rod to move from an initial position to a braking position, and the reset piece is arranged on the transmission piece or the hydraulic braking assembly and applies reset acting force to the transmission piece so as to enable the transmission piece to drive the piston rod to be located at the initial position. According to the application, the braking effect is improved through hydraulic braking, and the braking triggering structure is simple and the triggering reliability is high.

Inventors

  • ZHANG MINGZHU
  • DING XIAOYONG
  • DING XIA
  • JIAO JIGANG

Assignees

  • 腾达航勤设备(上海)有限公司

Dates

Publication Date
20260508
Application Date
20250625

Claims (10)

  1. 1. A brake mechanism for a trailer comprising a body and a drawbar rotatably coupled to the body, the drawbar being rotatable in a vertical plane, the brake mechanism comprising a trigger member, a transmission member, a reset member, and a hydraulic brake assembly; The hydraulic brake assembly comprises wheel brakes arranged on wheels of the vehicle body and a piston cylinder arranged on the vehicle body, and the piston cylinder can push brake fluid into the wheel brakes to realize braking; The trigger piece is arranged on the traction rod and rotates synchronously with the traction rod; The transmission piece is arranged on the vehicle body, one end of the transmission piece can be in contact with the trigger piece, the other end of the transmission piece is connected with a piston rod of the piston cylinder, and the pushing of the trigger piece can be converted into the pushing of the piston rod to brake liquid in the piston cylinder, so that the piston rod moves from an initial position to a braking position; the reset piece is arranged on the transmission piece or the hydraulic braking component, and applies reset acting force to the transmission piece so that the transmission piece drives the piston rod to be located at the initial position.
  2. 2. The brake mechanism for a trailer according to claim 1, wherein the transmission member includes a rotation shaft portion, an abutting portion fixed to the rotation shaft portion, and a pushing portion, the rotation shaft portion is configured to be rotatably connected to the vehicle body, the abutting portion is located below the trigger member, the pushing portion is rotatably connected to the piston rod, and the abutting portion is rotatable downward under the pushing of the trigger member and drives the pushing portion to push the piston rod.
  3. 3. A brake mechanism for a trailer according to claim 1, further comprising a mounting bracket provided on the vehicle body, and the piston cylinder is mounted on the mounting bracket and is adapted to absorb deflection of the piston rod and the piston cylinder by the mounting bracket.
  4. 4. A brake mechanism for a trailer according to claim 3, wherein the mounting bracket includes a stop portion disposed adjacent the transmission member, the transmission member extending towards the stop portion with an extension portion located above the stop portion and being operable to abut the stop portion under the influence of the return member to limit the transmission member from continuing to deflect towards the trigger member.
  5. 5. The brake mechanism for a trailer as recited in claim 1, wherein said hydraulic brake assembly further comprises a brake fluid tank for being provided on said vehicle body and communicating with said piston cylinder, and a delivery pipe having one end communicating with said piston cylinder and the other end communicating with said wheel brake to deliver brake fluid.
  6. 6. The brake mechanism for a trailer according to claim 5, wherein the wheel brakes are provided in plural numbers and are in one-to-one correspondence with wheels of the vehicle body.
  7. 7. The brake mechanism for a trailer of claim 6, wherein the piston cylinder includes a first delivery port and a second delivery port, and the first delivery port is proximate the braking position; The vehicle body comprises a front shaft and a rear shaft, the wheel brakes arranged on the front shaft of the vehicle body are communicated with the first conveying port, and the wheel brakes arranged on the rear shaft of the vehicle body are communicated with the second conveying port.
  8. 8. A brake mechanism for a trailer according to claim 1, wherein the trigger sleeve is provided with a roller, and the roller is contactable with the transmission.
  9. 9. The brake mechanism for a trailer of claim 1, wherein the wheel brakes are brake hubs.
  10. 10. A trailer comprising a body, a drawbar rotatably coupled to the body, and a brake mechanism according to any one of claims 1-9, the drawbar being rotatable in a vertical plane.

Description

Braking mechanism for trailer and trailer Technical Field The application relates to the technical field of tractor braking, in particular to a braking mechanism for a trailer and the trailer. Background Most of airport ground aviation service equipment at home and abroad adopts trailer movement, and the trailer is connected with a tractor through a traction rod and is driven by the tractor to move, such as a towed power unit. The airport environment is complex, various equipment cost is high, and the safety requirement is high simultaneously, so that the trailer needs to be connected with a braking structure to realize self-braking when the trailer is accidentally separated from the tractor. The traditional braking structure is as in publication No. 2013-04-03, chinese patent application with publication No. CN203199075U discloses a double-braking five-wheel steering traction bridge, which comprises a rotating shaft assembly welding base, an upper fixing seat and a lower fixing seat, wherein the rotating shaft assembly welding base is connected with one end of a traction rod through a mop rotating shaft, the other end of the traction rod is provided with a circular ring for traction fixation, one end of the rotating shaft assembly welding base, which is close to the mop rotating shaft, is provided with the five-wheel steering hub and a wheel hub, the traction rod rotates up and down around the mop rotating shaft to push rods respectively arranged on the upper fixing seat and the lower fixing seat to push a braking cross rod to compress wheels to realize braking, namely, the traction rod moves up and down to push the push rods to push the braking cross rod to generate braking. The scheme has the defects that the stay wire braking structure of the five-wheel steering wheel hub is complex, the reliability is low, the braking cross rod only depends on friction braking, the braking capability is poor, and particularly, the quick braking can not be realized under the condition of unexpected unhooking (namely, the traction rod is separated from the traction vehicle). Disclosure of utility model The application aims to solve the problem of poor braking effect when a traction rod of a trailer is unhooked accidentally in the prior art. Therefore, the application provides the braking mechanism for the trailer and the trailer, the braking effect is improved through hydraulic braking, and the braking triggering structure is simple and the triggering reliability is improved. The embodiment of the application provides a braking mechanism for a trailer, which comprises a trailer body and a traction rod rotatably connected with the trailer body, wherein the traction rod can rotate in a vertical plane, and the braking mechanism comprises a trigger piece, a transmission piece, a reset piece and a hydraulic braking component; The hydraulic brake assembly comprises wheel brakes arranged on wheels of the vehicle body and a piston cylinder arranged on the vehicle body, and the piston cylinder can push brake fluid into the wheel brakes to realize braking; The trigger piece is arranged on the traction rod and rotates synchronously with the traction rod; The transmission piece is arranged on the vehicle body, one end of the transmission piece can be in contact with the trigger piece, the other end of the transmission piece is connected with a piston rod of the piston cylinder, and the pushing of the trigger piece can be converted into the pushing of the piston rod to brake liquid in the piston cylinder, so that the piston rod moves from an initial position to a braking position; the reset piece is arranged on the transmission piece or the hydraulic braking component, and applies reset acting force to the transmission piece so that the transmission piece drives the piston rod to be located at the initial position. By adopting the technical scheme, the brake effect is improved by matching the wheel brakes with the hydraulic brake assembly, the brake distance is shortened, the trigger piece drives the transmission piece to act on the piston cylinder of the hydraulic brake assembly, the structure is simple, the brake triggering reliability is improved, and the continuous brake after the traction rod is unhooked is ensured. In some embodiments, the transmission member includes a rotating shaft portion, an abutting portion fixed to the rotating shaft portion, and a pushing portion, where the rotating shaft portion is rotatably connected to the vehicle body, the abutting portion is located below the trigger member, the pushing portion is rotatably connected to the piston rod, and the abutting portion may rotate downward under the pushing of the trigger member and drives the pushing portion to push the piston rod. In some embodiments, the vehicle further comprises a mounting bracket, the mounting bracket is arranged on the vehicle body, and the piston cylinder is arranged on the mounting bracket and can absorb deflection of the piston rod