Swing type traction device of semitrailer

Abstract

A semitrailer swing type traction device is characterized in that the semitrailer swing type traction device comprises a lower traction device and an upper traction device which are connected into a whole through a rotating shaft, the lower traction device comprises a traction plate and a traction pin, the traction pin is fixed to the traction plate, the bottom end of the traction pin downwards penetrates out of the traction plate, and lower traction supports are installed at the front end and the rear end of the traction plate respectively; traction reinforcing grooves are formed in the left side and the right side of the traction plate respectively, and a lower traction support shaft hole is formed in the lower traction support; the upper traction device comprises a longitudinal beam and at least two upper traction supports, the two sides of each upper traction support are connected with the longitudinal beam, and upper traction support shaft holes matched with the lower traction support shaft holes are formed in the upper traction supports. The utility model has the advantages of simple structure, convenience in assembly and long service life.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of semitrailer accessory production, and particularly relates to a swing type towing device for a semitrailer. BACKGROUND

[0002] The towing device for a semitrailer is a connecting device between a semitrailer towing vehicle and a semitrailer. As an important assembly component for connecting the towing vehicle and the semitrailer, the towing device not only serves to tow the semitrailer and bear the load of the semitrailer, but also should be able to withstand the impact during the starting, acceleration, deceleration, turning and braking of the towing vehicle and the hitching of the semitrailer. At present, the semitrailer towing vehicle is mostly of the saddle type single degree of freedom towing seat. The semitrailer vehicle of the single degree of freedom towing seat can rotate longitudinally around the single degree of freedom towing seat transverse axis installed on the frame of the towing vehicle. Due to the heavy load of the towing vehicle and the poor working environment, the single degree of freedom towing seat is prone to fatigue damage when subjected to transverse impact and torsional alternating stress, resulting in frequent maintenance and replacement of the single degree of freedom towing seat. The utility model patent - a swing type towing device for a semitrailer can realize the left and right swinging of the towing seat of the semitrailer along the longitudinal axis, reduce the impact damage of the transverse stress on the towing seat, effectively improve and prolong the service life of the towing seat, and make the operation of the towing vehicle more stable and safe. SUMMARY

[0003] The utility model discloses a swing type towing device for a semitrailer, which has the advantages of simple structure, convenient assembly and long service life.

[0004] To achieve the above object, the technical solution of the utility model is as follows: a swing type towing device for a semitrailer, characterized by comprising a lower towing device and an upper towing device connected together through a rotating shaft, wherein the lower towing device comprises a towing plate and a towing pin, the towing pin is fixed on the towing plate, the bottom end of the towing pin penetrates through the towing plate downward, the front and rear ends of the towing plate are respectively provided with lower towing supports, the left and right sides of the towing plate are respectively provided with towing reinforcing grooves, and the lower towing supports are provided with lower towing support shaft holes; the upper towing device comprises a longitudinal beam and at least two upper towing supports, the two sides of the upper towing supports are connected together with the longitudinal beam, and the upper towing supports are provided with upper towing support shaft holes matched with the lower towing support shaft holes.

[0005] A towing pin reinforcing groove is installed directly above the towing pin, the two ends of the towing pin reinforcing groove are connected together with the two towing reinforcing grooves respectively, a rubber damping device is installed on the towing plate outside the towing reinforcing grooves, and the rubber damping device comprises rubber damping blocks and rubber damping block fixing bolts.

[0006] The longitudinal beam comprises a web plate and a lower wing plate, and the upper traction support is connected to the web plate on both sides.

[0007] The upper traction support is provided with an upper traction support cross beam reinforcing pipe penetrating through the front and rear upper traction supports.

[0008] The upper traction support is in the shape of a whole "V", and the lower traction support is in the shape of a whole "∧".

[0009] The utility model divides the integral component into the lower traction device and the upper traction device which are connected into a whole by the rotating shaft, the traction device can swing left and right around the longitudinal axis, the impact damage degree of the horizontal stress to the traction seat is reduced through the impact limiting of the rubber damping device and the upper traction device longitudinal beam, the service life of the traction seat can be effectively improved and prolonged, and the operation of the traction vehicle is more stable and safe. BRIEF DESCRIPTION OF DRAWINGS

[0010] Fig. 1 is the assembly state schematic view of the utility model.

[0011] Fig. 2 is the structure schematic view of the lower traction device in the utility model.

[0012] Fig. 3 is the installation structure schematic view of the upper traction device and the tank body in the utility model.

[0013] In the drawing: lower traction device 1, traction plate 11, lower traction support 12, lower traction support shaft hole 121, lower traction support cross beam 122, rubber damping device 13, rubber damping block 131, rubber damping block fixing bolt 132, traction pin 14, traction pin reinforcing groove 15, traction reinforcing groove 16, upper traction device 2, longitudinal beam 21, web plate 211, lower wing plate 212, upper traction support cross beam reinforcing pipe 22, upper traction support 23, upper traction support cross beam 231, upper traction support shaft hole 232, rotating shaft 3, rotating shaft limiting clamping plate 4. DETAILED DESCRIPTION

[0014] The utility model will be further explained in detail in combination with the description and specific implementation mode of the accompanying drawings.

[0015] Referring to Figs. 1-3The utility model discloses a semi-trailer swing type traction device, including lower traction device 1 and upper traction device 2 by the rotation axis 3 link as one, lower traction device 1 includes traction plate 11 and traction pin 14, traction pin 14 is fixed on traction plate 11, and the bottom end of traction pin 14 is downward and passes out traction plate 11, and the front and rear ends of traction plate 11 are equipped with lower traction support 12 respectively, and lower traction support 12 is whole and presents " A " character type, and the left and right sides of traction plate 11 are equipped with traction reinforcing groove 16 respectively, and the two sides of lower traction support 12 are welded together with the side wall of left and right traction reinforcing groove 16 respectively, and lower traction support 12 is provided with lower traction support axle hole 121 on lower traction support crossbeam 122, and lower traction support axle sleeve is welded in lower traction support axle hole 121, and wear-resistant copper sleeve is contained in axle sleeve, and upper traction device 2 includes longitudinal beam 21 and at least two upper traction supports 23, and upper traction support 23 is whole and presents " V " character type, and longitudinal beam 21 includes web 211 and lower wing plate 212, and the upper portion of upper traction support 23 is welded with semi-trailer cylinder body pad, and the two sides of upper traction support 23 are connected together with web 211, and upper traction support 23 is provided with upper traction support axle hole 232 matched with lower traction support axle hole 121.

[0016] Traction pin reinforcing groove 15 is installed just above traction pin 14, and the two ends of traction pin reinforcing groove 15 are connected together with two traction reinforcing grooves 16 respectively, and rubber damping device 13 is installed on the outer side of traction plate 11 of traction reinforcing groove 16, and rubber damping device 13 includes rubber damping block 131 and rubber damping block fixed bolt 132, and rubber damping block 131 is fixed on traction plate 11 through rubber damping block fixed bolt 132.

[0017] The utility model discloses when installing, the lower traction support 12 of lower traction device 1 is clamped in the V type structure of upper traction support 23 of upper traction device 2, and then the rotation axis 3 is passed through the support axle hole of upper and lower traction device, and the rotation axis limiting clamping plate 4 is clamped in the notch of rotation axis 3, and the bolt is fixed on the lower traction support 12 of lower traction device 1, in order to guarantee the rotation smooth of rotation axis 3 and axle sleeve, and the grease nipple mounting screw hole and grease hole are processed on rotation axis 3. Only need to supplement the grease from the axle end grease nipple when using usually, guarantee the lubrication between rotation axis and axle sleeve.

Claims

1. A pendulum hitch for a semi-trailer, characterised in that: The utility model provides a kind of traction device, including lower traction device (1) and upper traction device (2) by rotation shaft (3) is connected as a whole, the lower traction device (1) includes traction plate (11) and traction pin (14), the traction pin (14) is fixed on traction plate (11), the bottom end of traction pin (14) is downward and passes out traction plate (11), the front and rear ends of the traction plate (11) are respectively equipped with lower traction support (12), the left and right sides of the traction plate (11) are respectively equipped with traction reinforcement groove (16), lower traction support (12) is provided with lower traction support shaft hole (121);The upper traction device (2) includes longitudinal beam (21) and at least two upper traction supports (23), the two sides of the upper traction support (23) are connected together with longitudinal beam (21), and upper traction support shaft hole (232) matched with lower traction support shaft hole (121) is provided on the upper traction support (23).

2. The semi-trailer pendulum drawbar according to claim 1, characterised in that: Traction pin reinforcement groove (15) is installed above the traction pin (14), and the two ends of the traction pin reinforcement groove (15) are connected together with two traction reinforcement grooves (16), respectively, rubber damping device (13) is installed on the traction plate (11) outside the traction reinforcement groove (16), the rubber damping device (13) includes rubber damping block (131) and rubber damping block fixing bolt (132), the rubber damping block (131) is fixed on the traction plate (11) by rubber damping block fixing bolt (132).

3. The semi-trailer pendulum drawbar according to claim 1, characterized in that: The longitudinal beam (21) includes web (211) and lower wing plate (212), and the two sides of the upper traction support (23) are connected together with the web (211).

4. The semi-trailer pendulum drawbar according to claim 1, characterized in that: The upper traction support (23) is provided with upper traction support crossbeam reinforcement pipe (22) penetrating through front and rear upper traction supports (23).

5. The semi-trailer pendulum drawbar according to claim 1, characterized in that: The upper traction support (23) is in the shape of a whole "V", and the lower traction support (12) is in the shape of a whole "∧".

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