CN201213361Y

CN201213361Y - Pressure regulating buffering traction frame

Info

Publication number: CN201213361Y
Application number: CNU2008200137748U
Authority: CN
Inventors: 马志海
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-06-28
Filing date: 2008-06-28
Publication date: 2009-04-01
Anticipated expiration: 2018-06-28

Abstract

The utility model relates to an agricultural implement, in particular to a tractor-drawn pressure-regulating buffering traction frame suitable for traction operation of agricultural implements. This kind of traction frame 1 also comprises crossbeam 2, upper traction plate 3 and the lower traction plate 11 of both sides, and the characteristics are: a pressure regulating buffer bar with telescopic length is arranged between the upper traction plate 3 and a suspension point on the tractor, and a pressure regulating buffer bar with telescopic length is respectively arranged between the upper surfaces of the lower traction plates 11 or the side pull plates 10 at two sides hinged with the tractor frame and the tractor frame. Because three pressure regulating buffer bars are adopted, the traction frame and the attached machines are allowed to float up and down or swing back and forth, and not only is sufficient simulation amount available, but also sufficient working pressure is provided. The ditching plow dragged by the digging plough can automatically change the soil penetration angle along with the increase of the resistance of the plow tip, thereby ensuring the stability of the tilling depth. The hydraulic depth limitation is not needed, the action is stable and soft, the impact abrasion is avoided, and the hydraulic depth limitation device also has the advantages of simple structure, low manufacturing cost, convenience in use, reliable performance and the like.

Description

Pressure regulation buffering hitch frame

Affiliated technical field

The utility model relates to a kind of farm machinery, promptly a kind of pressure regulation buffering hitch frame that is suitable for the farm implements towage.

Background technology

The farm implements such as plough that are used for dry land sowing, intertillage operation must be articulated with tractor mutually by hitch frame.Hitch frame is many to be made of a crossbeam and towing plate, and the facility that drawn are fixed on the crossbeam more.Towing plate on having above the crossbeam middle part respectively has a following towing plate at two, crossbeam front.The last hitch point of last towing plate and tractor back is hinged by pull bar, and two layback plates of following towing plate and tractor back are hinged.Adjust the length of upper connecting rod and layback plate, can determine the relative position of hitch frame and tractor.Because farming ground is uneven, thereby requires facility that certain amount of following an example will be arranged.This amount of following an example can realize by the connected mode of hitch frame and facility, also can realize by the connected mode of hitch frame and tractor.In general, the mechanism that follows an example is set between tractor and the hitch frame can simplifies implement structure, comparatively using more.At present, the mechanism that follows an example between tractor and the hitch frame mostly is the relocation mechanism that does not have pressure.Though this mechanism can allow facility to float in certain amplitude, the operating pressure of facility is difficult to guarantee.For example, the mechanism that follows an example of furrow plough allows facility to rise and fall with the fluctuating on ground,, when topsoil soils is hard, when ploughshare buries difficulty, also can not underlie even facility are in hollow place, and its reason is that share beak lacks pressure.In addition, the mechanism action of following an example that has impacts bigger, damages facility easily.Particularly adopt the facility of the hydraulic means control tilling depth of tractor, hydraulic unit damages more serious.As seen, when guaranteeing that facility have enough the amount of following an example, also must satisfy the requirement of operating pressure, also will solve the shock problem of the action of following an example simultaneously.

Summary of the invention

The purpose of this utility model provides a kind of amount of following an example that can guarantee facility, can also satisfy the operating pressure of facility and can guarantee the hitch frame that stable action is soft, avoid the impact failure parts of following an example simultaneously.

Above-mentioned purpose is realized by following technical scheme: develop a kind of pressure regulation buffering hitch frame, this hitch frame also is to be made of crossbeam, the following towing plate of going up towing plate and both sides, different is: said going up on towing plate and the tractor between the hitch point, the telescopic pressure regulation buffering of length thick stick is housed, with tractor frame mutually under the both sides of hinge towing plate or above the layback plate to the telescopic pressure regulation buffering of a length thick stick respectively is housed between the tractor frame.

The main body of said pressure regulation buffering thick stick is a spring, both ends of the spring all have can with frame or the hitch frame joint of hinge mutually.

Said pressure regulation buffering thick stick is made of adjustable length rod member and spring, two ends be respectively equipped with can with frame or the hitch frame joint of hinge mutually.

Said pressure regulation buffering thick stick has one section sleeve pipe, in the sleeve pipe is screw, there is a screw rod to screw in screw from sleeve pipe one end, the other end of sleeve pipe inserts a boom, be with spring on the boom, one end of spring withstand on sleeve pipe on, the other end withstands on the chuck of boom front portion, the outer end of boom and screw rod all has and frame or the hitch frame joint of hinge mutually.

The sleeve pipe leading portion of said pressure regulation buffering thick stick has a pressure-reducing chamber, splendid attire decompression oil in the pressure-reducing chamber, and piston is equipped with in said boom end, and piston matches with the pressure-reducing chamber inwall, has the oil-through hole that restriction decompression oil passes through above the piston.

The cover tube outside of said pressure regulation buffering thick stick is with one and transfers long cover, and transferring the port of long cover is an inclined-plane, has several cards on the inclined-plane and slits, and is equipped with on sleeve pipe and blocks the open-minded axis that matches.

The beneficial effects of the utility model are: owing to adopted three pressure regulation buffering thick sticks, allow and limit hitch frame to fluctuate or swing together with being with facility, the amount of following an example of existing abundance has enough operating pressures again.With the furrow plough of its traction, can change angle of penetration voluntarily with the increase of the sharp resistance of plough, thereby guarantee the stability of tilling depth.And dark without the hydraulic pressure limit, stable action is soft, avoids impact wear.Can competent corn etc. dry land ridge culture crops sowing, topdress, several work such as intertillage, also have advantages such as simple in structure, cheap, easy to use, dependable performance simultaneously, be to improve plant husbandry mechanization level, alleviating peasant's labour intensity provides condition.

Description of drawings

Fig. 1 is the front view of a kind of embodiment;

Fig. 2 is the left view of this embodiment;

Fig. 3 is the vertical view of this embodiment;

Fig. 4 is the front view of first kind of pressure regulation buffering of parts thick stick of this embodiment;

Fig. 5 is the front view of second kind of pressure regulation buffering of parts thick stick of this embodiment;

Fig. 6 is the front view of the third pressure regulation buffering thick stick of parts of this embodiment;

Fig. 7 is the front view of the third high pressure regulation of parts of this embodiment towards thick stick;

Fig. 8 is the pressure-reducing valve enlarged diagram of the parts pressure regulation buffer bar of this embodiment;

Fig. 9 is the duty front view of this embodiment;

Figure 10 is the duty vertical view of this embodiment;

Figure 11 is the working state schematic representation of this embodiment.

Among the figure as seen: hitch frame 1, crossbeam 2, last towing plate 3, pressure regulation buffering thick stick 4, lifting arm 5, frame 6, tractor trailing wheel 7, hind axle 8, connecting plate 9, layback plate 10, following towing plate 11, spring 12, joint 13, screw rod 14, sleeve pipe 15, boom 16, bulge loop 17, chuck 18, transfer long cover 19, pressure-reducing chamber 20, piston 21, oil-through hole 22, plow beam 23, plow standard 24, slade 25, ploughshare 26.

Embodiment

As shown in Figure 1, 2, 3, this hitch frame 1 is that following towing plate 11 etc. by a crossbeam 2 and last towing plate 3, both sides constitutes.Three pressure regulation buffering thick sticks 4 are arranged between hitch frame 1 and tractor.Have one above, below both sides respectively have two.Top pressure regulation buffering thick stick 4 is hinged between the last hitch point of towing plate 3 and tractor frame 6.Following pressure regulation buffering thick stick 4 is contained in respectively above the layback plate 10 of both sides towing plate 11 fronts.Layback plate 10 is hinged on the connecting plate 9 that clamps on the tractor hind axle 8, and connecting plate 9 extends upward, and the upper end is established a hinge point again, and following hinge of pressure regulation buffering thick stick is on layback plate 10, and the other end hinge is in connecting plate 9 upper ends.

The form of pressure regulation buffering thick stick can have multiple, only enumerates three kinds below:

First kind: as shown in Figure 4, this pressure regulation buffering thick stick is that the joint 13 by spring 12 and two constitutes.

Second kind: as shown in Figure 5, this pressure regulation buffering thick stick has a branch casing 15, and the back segment of sleeve pipe 15 is screws, and screw rod 14 and screw cooperate adjustable-length.Sleeve pipe 15 leading portions insert a boom 16, and boom 16 can slide in sleeve pipe 15, in the outside of sleeve pipe 15, a bulge loop 17 is arranged, a chuck 18 is arranged in the outer end of boom 16, a tubulose spring 12 is housed between bulge loop 17 and the chuck 18, respectively there is a joint 13 screw rod 14 and boom 16 outer ends.During installation, at first adjust length, guarantee that spring 12 has certain pressure, get final product work.

The third: shown in Fig. 6,7, this pressure regulation buffering thick stick 4 also has a branch casing 15 with preceding a kind of similar, and the back segment of sleeve pipe 15 is screws, and screw rod 14 and screw cooperate adjustable-length.Sleeve pipe 15 leading portions insert a boom 16, and boom 16 can slide in sleeve pipe 15, in the outside of sleeve pipe 15, a bulge loop 17 is arranged, a chuck 18 is arranged in the outer end of boom 16, a tubulose spring 12 is housed between bulge loop 17 and the chuck 18, respectively there is a joint 13 screw rod 14 and boom 16 outer ends.Different is: sleeve pipe 15 has a pressure-reducing chamber 20 with the joint portion of boom 16.20 the insides, pressure-reducing chamber are full of decompression oil, and piston 21 is equipped with in boom 16 ends, have tiny oil-through hole 22 around the piston 21, and piston 21 matches with the tube wall in pressure-reducing chamber 20.An end of 20 has detachable end in the pressure-reducing chamber, and end cap has the mesopore that is sealed and matched with boom, when boom 16 expanding-contracting actions, promptly drive piston 21 and in pressure-reducing chamber 20, slide, because the oil-through hole 22 of piston 21 is very thin, decompression oil passes through slowly, thereby has relaxed the impact of action.The effect of miscellaneous part is identical with precedent.

The length adjusting mechanism of the pressure regulation buffering thick stick of representing among Fig. 74 is not a screw rod, but adding one, sleeve pipe 15 outsides transfer long cover 19, transferring the end face of long cover 19 is the inclined-plane, there are many each cards to slit above, in the cover tube outside boss is arranged, rotate to transfer long cover 19, boss is snapped in different cards slits, whole length will change.

Fig. 9,10,11 has represented a kind of duty of this hitch frame 1, as seen from the figure, the furrow plough of being made up of plow beam 23, plow standard 24, slade 25, ploughshare 26 is installed on the hitch frame 1, three pressure regulation buffering thick sticks 4 are housed between hitch frame 1 and the tractor frame, just can carry out ditching operation.Certainly, this ditching operation may be different operations such as to sow, intertill, topdress.

Claims

1. a pressure regulation cushions hitch frame, be by crossbeam (2), go up following towing plate (11) formation of towing plate (3) and both sides, it is characterized in that: said going up on towing plate (3) and the tractor between the hitch point, the telescopic pressure regulation buffering of length thick stick (4) is housed, with tractor frame towing plate (11) or cushion thick stick (4) to a telescopic pressure regulation of length respectively is housed between the tractor frame layback plate (10) above under the both sides of hinge mutually.

2. pressure regulation according to claim 1 buffering hitch frame, it is characterized in that: the main body of said pressure regulation buffering thick stick (4) is spring (12), spring (12) two ends all have can with frame (6) or hitch frame (1) joint of hinge (13) mutually.

3. pressure regulation according to claim 1 buffering hitch frame is characterized in that: said pressure regulation buffering thick stick (4) is made of adjustable length rod member and spring (12), two ends be respectively equipped with can with frame (6) or hitch frame (1) joint of hinge (13) mutually.

4. pressure regulation buffering hitch frame according to claim 1, it is characterized in that: said pressure regulation buffering thick stick (4) has one section sleeve pipe (15), in the sleeve pipe (15) is screw, there is a screw rod (14) to screw in screw from sleeve pipe (15) one ends, the other end of sleeve pipe (15) inserts a boom (16), be with spring (12) on the boom (16), one end of spring (12) withstands on the sleeve pipe (15), the other end withstands on the anterior chuck (18) of boom (16), and the outer end of boom (16) and screw rod (14) all has and frame (6) or hitch frame (1) joint of hinge (13) mutually.

5. according to claim 1 or 4 described pressure regulation buffering hitch frames, it is characterized in that: sleeve pipe (15) leading portion of said pressure regulation buffering thick stick (4) is a pressure-reducing chamber (20), the interior splendid attire decompression in pressure-reducing chamber (20) oil, piston (21) is equipped with in said boom (16) end, piston (21) matches with pressure-reducing chamber (20) inwall, has oil-through hole (21) above the piston (21).

6. according to claim 1 or 4 described pressure regulation buffering hitch frames, it is characterized in that: sleeve pipe (15) outside of said pressure regulation buffering thick stick (4) is with one and transfers long cover (19), transferring the port of long cover (19) is an inclined-plane, have several cards on the inclined-plane and slit, on sleeve pipe (15), be equipped with and block the open-minded boss that matches.