CN2517230Y

CN2517230Y - Small four-wheel tractor lifter

Info

Publication number: CN2517230Y
Application number: CN 02212330
Authority: CN
Inventors: 仪垂良; 宋丽华
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-01-22
Filing date: 2002-01-22
Publication date: 2002-10-23
Anticipated expiration: 2012-01-22

Abstract

The utility model relates to a raiser for a small four wheel tractor, having a bracket which is fixed on the gearbox of the tractor. The bracket is connected with an oil cylinder through a rotating shaft and a lifting arm which is hinged with a cylinder rod through the other rotating shaft. The utility model has the advantages that the oil ways between the tractor gearbox and the oil cylinder are communicated, the hydraulic oil inside the oil cylinder and the tractor gearbox is shared, so that oil leakage is avoided; at the same time, all parts are exposed above the bracket, so the maintenance and adjustment are convenient, the failure rate is low, the performance is reliable, the usage is convenient. The utility model is particularly applicable for small four wheel tractors with 15-22 hp.

Description

The tractor with small four wheels lifter

The utility model belongs to the hydraulic lifting apparatus that uses on the tractor.

At present, the employed lifter of tractor with small four wheels all is to fix a hydraulic jack in a rectangular housing, and the base plate of this housing is connected by bolt with tractor transmission case, and hydraulic medium is housed in the housing.During work, piston reaches the purpose of lifting farm implements thereby the interior lift arm of promotion lift arm outside lift shaft is rotated drive rotates under the promotion of hydraulic medium.This lifter can produce oil leakage phenomenon to some extent at axis hole and base plate faying face place, and oil cylinder is built in enclosure interior, is not easy to adjust and maintenance.

The purpose of this utility model provides a kind of dependable performance, tractor with small four wheels lifter easy to use.

The utility model comprises the bearing that is fixed on the gear box of tractor body, it is characterized in that connecting an oil cylinder by rotating shaft on the bearing, also is connected with lift arm by another rotating shaft, and this lift arm and piston rod are hinged; Gear box of tractor is communicated with oil circuit between the oil cylinder.

Because each parts of the present utility model all are fixed on the flat bearing, hydraulic medium in oil cylinder and the tractor transmission case is shared, thereby avoided oil leakage phenomenon, each parts all is exposed to above the bearing simultaneously, be convenient to maintenance, adjust, fault rate is low, dependable performance, easy to use, be particularly suitable on the tractor with small four wheels of 15-22 horsepower, using.

Fig. 1 is the structural representation of the utility model embodiment; Fig. 2 is the vertical view of Fig. 1; Fig. 3 is the right view of Fig. 1; The left view of Fig. 4 view 1.

The accompanying drawing illustrated embodiment has the bearing 1 that is fixed on plane on the gear box of tractor, is connected with oil cylinder 5 by rotating shaft 4 on this bearing 1, also is connected with lift arm 3 by another rotating shaft 2, and this lift arm 3 is hinged with piston rod 9.Gear box of tractor is communicated with oil circuit between the oil cylinder 5.The upper end of oil circuit fuel sucking pipe 7 is fixed on the bearing 1 and in oil pump suction tube and links to each other, and is communicated with oil cylinder 5 by high-pressure oil pipe 10; The lower end of oil circuit fuel sucking pipe 7 links to each other with the oil filter 8 that is installed in the gear box of tractor bottom.Bearing 1 with lift arm 3 corresponding positions on be provided with supported hole, lock shaft 6 is housed in it.During use, tractor carry oil pump by oil circuit fuel sucking pipe 7 with hydraulic oil from the sucking-off of transmission case bottom, pressure oil makes piston rod 9 promote lift arms 3 and rotates by input oil cylinder 5 behind high-pressure oil pipe 10 and the control valve then, and the motion by the tractor hanging bar promotes farm machinery.In the use, control valve is pulled neutral position or down position, promptly can control farm machinery and stop to promote or descending.When tractor drives the farm machinery transfer, but trip lock mandrel 6 descends to prevent farm machinery lift arm 3 lockings because of action of gravity.

Claims

1, a kind of tractor with small four wheels lifter comprises the bearing 1 that is fixed on the gear box of tractor body, it is characterized in that connecting an oil cylinder 5 by rotating shaft 4 on the bearing 1, also is connected with lift arm 3 by another rotating shaft 2, and this lift arm 3 is hinged with piston rod 9; Gear box of tractor is communicated with oil circuit between the oil cylinder 5.

2, according to the tractor with small four wheels lifter under the claim 1, it is characterized in that being equipped with in the supported hole on bearing 1 lock shaft 6.