CN201304872Y

CN201304872Y - Trailer hitch of wheeled tractor

Info

Publication number: CN201304872Y
Application number: CNU2008202307245U
Authority: CN
Inventors: 薛志飞; 岳艳艳; 雷蕾; 刘涛; 王巧灵
Original assignee: LUOYANG TRACTOR RESEARCH INSTITUTE Co Ltd
Current assignee: LUOYANG TRACTOR RESEARCH INSTITUTE Co Ltd
Priority date: 2008-12-10
Filing date: 2008-12-10
Publication date: 2009-09-09
Anticipated expiration: 2018-12-10

Abstract

The utility model relates to a trailer hitch of a wheeled tractor which essentially comprises a trailer hook, a trailer plate, a positioning spring, a steel ball, a trailer pin assembly, an expansion shaft, a pin shaft, a handle welded part, an expansion spring, retaining ring and the like. The trailer hitch is connected with a towing bracket of the tractor, arranged at the rear part of the tractor, can realize the step regulation to the installation height of the trailer hitch assembly within the effective range of the towing bracket, realize the articulation of a trailer at different height, and is convenient for the users; the 360-degree rotation between the trailer plate and the trailer hook effectively removes additional torsional torque produced between the trailer or an agricultural auxiliary tool and the main body of the tractor because of different ground height, thereby effectively protecting the operation safety of the tractor.

Description

The wheel-tire tractor trailed equipment

(1) technical field

The utility model belongs to the trac. field, relates to a kind of wheel-tire tractor trailed equipment.

(2) background technology

Along with the expansion of domestic trac. functions of use and export volume increase, the user to the use of trac. trailed equipment also more and more widely.Therefore, the in-use performance to the trac. trailed equipment proposes higher requirement.Supporting trailed equipment diverse in function on the at present external trac., also convenient in the use.And the trac. trailed equipment of domestic production only limits to the more loaded down with trivial details grade height adjustment that has, and therefore existing trailed equipment has influenced the outlet of trac. to a certain extent.For operating needs and the ease of use that satisfies the user, enlarge the export volume of trac., the exploitation of carrying out the novel trailing device is imperative.

(3) summary of the invention

The purpose of this utility model be to provide a kind of multiple functional, rational in infrastructure, use convenient wheel-tire tractor trailed equipment.

The technical solution of the utility model is: the wheel-tire tractor trailed equipment comprises pulls hook 1, pulls plate 2, retainer spring 3, steel ball 4, pins assembly 5, telescopic shaft 6, bearing pin 7, handle soldering member 8, coil tension spring 9, back-up ring 10.It is characterized in that: pull hook 1 axle journal and pack into and pull in the hole in the middle of the plate 2, pull hook 1 and pulling installing and locating spring 3 and steel ball 4 between the plate 2, make to pull hook 1 and pull between the plate 2 and realize 360 degree rotations and can locate, handle soldering member 8 is installed in and stretches out on the back-up ring 10 of pulling hook 1 cylindrical of pulling outside the plate 2, by back-up ring 10 with pull hook 1 affixed one, telescopic shaft 6 and coil tension spring 9 are installed in pulls in plate 2 two side holes, be connected with telescopic shaft 6 by bearing pin 7 handle soldering members 8, pins assembly 5 is packed into and is pulled in the hook 1.

Pins assembly 5 comprises pins, chain link, lock pin and La Er.

The utility model can reach following beneficial effect: (1) can realize that the setting height(from bottom) of wheel-tire tractor trailed equipment can have level to regulate in the towing bracket efficient range, can satisfy articulating of differing heights position trailer or agricultural machinery accessory, make that articulating of trailer or agricultural machinery accessory is convenient.(2) pull the 360 degree rotations of linking up with and pulling between pulling, eliminated the twist moment that produces between trailer and the trac. main frame, actv. has been protected trac. and trailer and agricultural machinery accessory job security.

(4) description of drawings

Fig. 1 is the utility model wheel-tire tractor trailed equipment structural representation.

Fig. 2 is the utility model wheel-tire tractor trailed equipment left side TV structure scheme drawing.

(5) specific embodiment

As shown in Figure 1 and Figure 2, the wheel-tire tractor trailed equipment comprises and pulls hook 1, pulls plate 2, retainer spring 3, steel ball 4, pins assembly 5, telescopic shaft 6, bearing pin 7, handle soldering member 8, coil tension spring 9, back-up ring 10.Pulling hook 1 axle journal packs into and pulls in the hole in the middle of the plate 2, pull hook 1 and pulling installing and locating spring 3 and steel ball 4 between the plate 2, make to pull hook 1 and pull between the plate 2 and realize 360 degree rotations and can locate, handle soldering member 8 is installed in and stretches out on the back-up ring 10 of pulling hook 1 cylindrical of pulling outside the plate 2, by back-up ring 10 with pull hook 1 affixed one, telescopic shaft 6 and coil tension spring 9 are installed in pulls in plate 2 two side holes, be connected with telescopic shaft 6 by bearing pin 7 handle soldering members 8, pins assembly 5 is packed into and is pulled in the hook 1.The wheel-tire tractor trailed equipment that assembles is installed on the drawbar frame of trac..

During work, upwards the handle soldering member 8 on the trip gear drives on the trailed equipment by bearing pin 7 and inwardly compresses coil tension spring 9 with towing bracket bonded assembly telescopic shaft 6 along axis direction, telescopic shaft 6 is retracted to pull plate 2 inside, the towing bracket that telescopic shaft 6 breaks away from the trac., this moment, the setting height(from bottom) of trailed equipment can have level to regulate in the towing bracket efficient range, can satisfy articulating of differing heights position trailer.Behind the elected fixed corresponding height, release handle soldering member 8, flexible pin 6 stretch out under the effect of compression spring 9 pulls plate 2 and enters the corresponding pin-and-hole that connects on the drawbar frame, makes the trailed equipment assembly fixing on this position, finishes height adjustment.

Pull hook 1 and be connected with the trailer bonded assembly in this trailed equipment and pull between the plate 2 by adopting four groups of retainer springes 3 and steel ball 4 to position with towing bracket; make and pull hook 1 and pull plate 2 realizations 360 degree rotations; thereby eliminated the additional twist moment that between trailer or agricultural machinery accessory and the trac. main frame because ground is uneven and produces effectively, actv. has protected trac. to exercise safety.

Claims

1, a kind of wheel-tire tractor trailed equipment, comprise and pull hook (1), pull plate (2), retainer spring (3), steel ball (4), pins assembly (5), telescopic shaft (6), bearing pin (7), handle soldering member (8), coil tension spring (9), back-up ring (10), it is characterized in that: pull hook (1) axle journal and pack into and pull in the hole in the middle of the plate (2), pull hook (1) and pulling installing and locating spring (3) and steel ball (4) between the plate (2), make to pull hook (1) and pull between the plate (2) and realize 360 degree rotations and can locate, handle soldering member (8) is installed in and stretches out on the back-up ring (10) of pulling hook (1) cylindrical of pulling outside the plate (2), by back-up ring (10) with pull the affixed one of hook (1), telescopic shaft (6) and coil tension spring (9) are installed in pulls in plate (2) two side holes, be connected with telescopic shaft (6) by bearing pin (7) handle soldering member (8), pins assembly (5) is packed into and is pulled in the hook (1).

2, wheel-tire tractor trailed equipment according to claim 1 is characterized in that: pins assembly (5) comprises pins, chain link, lock pin and La Er.