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CN-224210852-U - Dining car pulling connection device with damping and buffering functions

CN224210852UCN 224210852 UCN224210852 UCN 224210852UCN-224210852-U

Abstract

The utility model relates to the technical field of pull-in connecting devices and discloses a dining car pull-in connecting device with a shock absorption function, which comprises a fixed seat and an extrusion assembly, wherein the central position of one side of the fixed seat is provided with the extrusion assembly, one end of the extrusion assembly, which is far away from the fixed seat, is provided with a connecting cylinder, the extrusion assembly comprises a mounting cylinder, the mounting cylinder is fixed on one side of the fixed seat, a piston is arranged in the mounting cylinder, one end of the extrusion rod, which is positioned outside the mounting cylinder, is fixedly sleeved with a sleeve block, one end of the extrusion rod, which is far away from the piston, is movably inserted into the connecting cylinder, the sleeve block is positioned between the mounting cylinder and the connecting cylinder, the piston is pushed to move in the mounting cylinder through the extrusion rod, and therefore, a part of impact energy is consumed by the air resistance in the mounting cylinder in the moving process of the piston, the impact of a dining car pull-in the condition of emergency brake and the like on the pull-in the connecting device is reduced, the service life of the device is remarkably prolonged, and the use cost is reduced.

Inventors

  • GUO YANWEI
  • ZHANG XIAOFEN
  • GUO YUFENG

Assignees

  • 陕西德林凯越科技有限公司

Dates

Publication Date
20260508
Application Date
20250729

Claims (5)

  1. 1. The dining car pulling connection device with the damping and buffering functions is characterized by comprising a fixing seat (1), a buffering component (2) and an extrusion component (3); an extrusion assembly (3) is arranged at the center of one side of the fixed seat (1), a connecting cylinder (7) is arranged at one end, far away from the fixed seat (1), of the extrusion assembly (3), and a plurality of buffer assemblies (2) are uniformly arranged at the outer side of the extrusion assembly (3); The extrusion assembly (3) comprises an installation cylinder (31), the installation cylinder (31) is fixed on one side of the fixed seat (1), a piston (32) is arranged in the installation cylinder (31), an extrusion rod (33) is fixedly connected to one side of the piston (32), one end of the extrusion rod (33) located on the outer side of the installation cylinder (31) is fixedly sleeved with a sleeve block (34), one end of the extrusion rod (33) away from the piston (32) is movably inserted into the connecting cylinder (7), and the sleeve block (34) is located between the installation cylinder (31) and the connecting cylinder (7); Every buffer unit (2) all includes two installation piece (21), two installation piece (21) all fix in fixing base (1) outside, two parallel fixation has two dead levers (25) between installation piece (21), two fixed block (23) have been cup jointed in the dead lever (25) outside is fixed, all fixedly connected with two springs (24) between movable block (23) and two installation piece (21), four spring (24) cover are established respectively at two dead levers (25) periphery, be connected through connecting plate (22) between movable block (23) and cover piece (34).
  2. 2. The dining car pulling connection device with shock absorption and buffering as set forth in claim 1, wherein one end of the connection plate (22) is rotatably connected with the moving block (23) through a rotating shaft, and the other end of the connection plate (22) is rotatably connected with the outer side of the sleeve block (34).
  3. 3. The dining car pulling connection device with shock absorption and buffering as set forth in claim 1, wherein the side of the sleeve block (34) close to the connecting cylinder (7) is fixedly connected with a buffer pad (4).
  4. 4. The dining car pulling connection device with shock absorption and buffering as set forth in claim 1, wherein the inner wall of the connection cylinder (7) is provided with a plurality of side grooves (6), the outer side of one end of the extrusion rod (33) positioned in the connection cylinder (7) is fixedly connected with a plurality of side blocks (5) matched with the side grooves (6), and the plurality of side blocks (5) are respectively connected with the plurality of side grooves (6) in a sliding manner.
  5. 5. The dining car pulling connection device with shock absorption and buffering according to claim 1, wherein the diameter of a cylinder opening of the mounting cylinder (31) is matched with the diameter of the extrusion rod (33), and the diameter of the cylinder opening of the mounting cylinder (31) is smaller than the diameter of the piston (32).

Description

Dining car pulling connection device with damping and buffering functions Technical Field The utility model relates to the technical field of pull connection devices, in particular to a dining car pull connection device with a damping buffer. Background As an innovative transportation means, the dining car trailer skillfully integrates the functional characteristics of the dining car and the trailer, and plays an important role in the field of mobile catering service. The dining car is usually powered by a tractor, and the carriage of the dining car is towed to run, so that the dining car can meet the dining service requirements of various occasions by virtue of the flexible and convenient characteristics of the dining car, and the dining car is common in figures of the dining car, such as places where people gather, such as outdoor activities, festival celebrations, tourist attractions and the like. During operation of a dining car trailer, the connection between the tractor and the dining car is critical, and the hitch connection is a critical component for achieving this connection. However, the existing hitch connection has certain design drawbacks. At present, most traction connection devices adopt a hard connection mode to directly fix a tractor with a carriage. Although the connection mode has simple structure and stable connection, a plurality of problems are exposed in practical use. When the traction vehicle encounters unexpected situations and needs emergency braking in the driving process, the dining car carriage can keep on the forward movement trend due to the inertia of the dining car carriage. At this time, the car may generate a strong impact force on the hitch connection, and the impact force may cause the hitch connection to vibrate severely. On one hand, the strong vibration can cause different degrees of damage to each component of the traction connection device, and accelerate the abrasion and aging of the components, so that the service life of the traction connection device is shortened, the use cost is increased, and on the other hand, the impact force can be transmitted to the tractor through the traction connection device, so that the driving stability and the safety of the tractor are adversely affected, and even traffic accidents can be possibly caused. Disclosure of utility model The utility model aims to provide a dining car pulling connection device with a damping buffer, which is used for solving the problems in the background technology. The dining car pulling and connecting device with the damping and buffering functions comprises a fixed seat, a buffering component and an extrusion component, wherein the extrusion component is arranged in the center of one side of the fixed seat, a connecting cylinder is arranged at one end, far away from the fixed seat, of the extrusion component, and a plurality of buffering components are uniformly arranged at the outer side of the extrusion component; The extrusion assembly comprises a mounting cylinder, the mounting cylinder is fixed on one side of the fixed seat, a piston is arranged in the mounting cylinder, one side of the piston is fixedly connected with an extrusion rod, one end of the extrusion rod, which is positioned on the outer side of the mounting cylinder, is fixedly sleeved with a sleeve block, one end of the extrusion rod, which is far away from the piston, is movably inserted into the connecting cylinder, and the sleeve block is positioned between the mounting cylinder and the connecting cylinder; Every buffer unit all includes two installation blocks, two the installation block is all fixed in the fixing base outside, two parallel fixation has two dead levers between the installation block, two the dead lever outside has fixedly cup jointed the movable block, equal fixedly connected with two springs between movable block and the two installation blocks, four the spring overlaps respectively and establishes at two dead lever outsides, be connected through the connecting plate between movable block and the cover piece. Preferably, one end of the connecting plate is rotationally connected with the moving block through a rotating shaft, and the other end of the connecting plate is rotationally connected with the outer side of the sleeve block. Preferably, one side of the sleeve block, which is close to the connecting cylinder, is fixedly connected with a buffer cushion. Preferably, a plurality of side grooves are formed in the inner wall of the connecting cylinder, a plurality of side blocks matched with the side grooves are fixedly connected to the outer side of one end of the extrusion rod, which is positioned in the connecting cylinder, and the side blocks are respectively and slidably connected with the side grooves. Preferably, the diameter of the cylinder opening of the mounting cylinder is matched with the diameter of the extrusion rod, and the diameter of the cylinder opening of the mounting cylinder is smaller th