CN202493668U

CN202493668U - Back and forth driving steering wheel tractor gear operating device

Info

Publication number: CN202493668U
Application number: CN201120555931XU
Authority: CN
Inventors: 李承昌; 林鹏; 唐嘉懋
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-12-27
Filing date: 2011-12-27
Publication date: 2012-10-17
Anticipated expiration: 2021-12-27

Abstract

The utility model discloses a back and forth driving steering wheel tractor gear operating device which is characterized in that a spine sleeve is sleeved on a spine shaft, and the head of the spine sleeve is inserted into a fork groove; the spine shaft is arranged in a spine shaft hole in a gearbox cover, and the square head of the spine shaft is connected with a square hole in a shifting fork rotary arm; a main speed change rotary shaft is arranged in a main speed change rotary shaft hole in the gearbox cover, and the square head of the main speed change rotary shaft is connected with a square hole in the main speed change rear rotary arm, and the other end is inserted into the fork groove of the spine sleeve to drive the spine sleeve to slide; an auxiliary speed change rotary shaft is arranged in an auxiliary speed change rotary shaft hole in the gearbox cover, and the square head of the auxiliary speed change rotary shaft is connected with a square hole in an auxiliary main speed change rear rotary arm to form an auxiliary speed change operating mechanism, so the high and low gear shifting is realized. The gears are shifted by soft lines, so the operating mechanism of the tractor chassis gearbox becomes compact and simple, and the gear shifting becomes soft, sensitive, labor-saving, and reliable. At the same time, the steering space is wide, and the removal of a handle seat reduces the cost. The back and forth driving steering wheel tractor gear operating device can be applied to various back and forth driving steering wheel tractors.

Description

A kind of front and back driving direction dish tractor gear control device

Technical field

The device that driving direction dish tractor gear was handled before and after the utility model related in a kind of farm machinery, especially the gear flexible cord Effector of front and back driving direction dish tractor.

Background technique

At present, the forward and backward driving direction tractor of known various models is though the gear control device of its forerunner chassis gearbox is gone through improvement for many years; Its gear operating mechanism still gear operating mechanism with " workers and peasants-12 " type hand tractor is similar; Nowadays this chassis gearbox by a large amount of uses on various forward and backward driving direction dish tractors, and, make tractor gear operating lever when turning to follow armrest seat and swing because its gear operating mechanism is changed; Bring very big inconvenience to manipulation; Simultaneously, because armrest seat puts in the operator cabin and swings, the preceding shelves of operator cabin need to reserve armrest seat swing space and make the driving indoor environment very abominable.For addressing the above problem, must design a kind of gear operating mechanism that front and back driving direction dish tractor uses that is more suitable for, its operating handle should be able to be fixed on appointed positions in the operator cabin.

The model utility content

The purpose of the utility model provides a kind of front and back driving direction dish tractor gear control device, can solve gear operating lever and swing the problem that can not be fixed on specified position at any time, and the solution operator cabin can not totally enclosed problem.

The technological scheme that the utility model adopted is:

Design a kind of novel gear shift cover; Secondary speed change rotating shaft mounting hole, main transformer speed rotating shaft mounting hole, splined shaft mounting hole and pivoted arm fulcrum mounting hole are set on gear shift cover, arrange secondary selector gear and main transformer speed operating mechanism according to each rotating shaft and fulcrum mounting point then.

A kind of front and back driving direction dish tractor gear control device; Mainly by pivoted arm 11, spline housing 17, splined shaft 16 after pivoted arm 13, the main transformer speed before the rotating shaft 18 of main transformer speed, the main transformer speed, change pivoted arm 9 after pivoted arm 19 before fork pivoted arm 8, secondary speed change rotating shaft 15, the secondary speed change, the secondary speed change, gear shift cover 14 is formed; Structure characteristic is: spline housing 17 is enclosed within on the splined shaft 16; Insert in the fork pockets of I-reverse speed fork 21 or II-III shelves shift fork 22 at its bulb position; 16 of splined shafts are installed in the spline axis hole 24 of gear shift cover 14, and its square toes position is connected with the square hole that changes fork pivoted arm 8, and main transformer speed rotating shaft 18 simultaneously is installed in the main transformer speed rotary shaft hole 26 of gear shift cover 14; The square hole of pivoted arm 11 is connected after its square toes position and the main transformer speed, and the other end inserts in the fork pockets of spline housing 16; Secondary speed change rotating shaft 15 is installed in the secondary speed change rotary shaft hole 25 of gear shift cover 14, and the square hole of pivoted arm 9 is connected after its square toes position and the secondary speed change, and the other end inserts in the fork pockets of secondary gear shift fork 23, forms secondary selector gear.

Pivoted arm 13 is enclosed within on the pivoted arm fulcrum 20 with the preceding pivoted arm 19 of secondary speed change before the main transformer speed, and pivoted arm fulcrum 20 passes pivoted arm branched shaft hole 27, uses nut check.

Gear shift cover 14 is provided with spline axis hole 24, secondary speed change rotary shaft hole 25, main transformer speed rotary shaft hole 26, pivoted arm branched shaft hole 27.

The beneficial effect of the utility model is: the manipulation of gear flexible cord is lighter, more laborsaving, feel is better; Solved the problem that gear operating lever swings, can cancel the armrest seat of former tractor, reduced cost; Also can cancel the armrest seat window of the preceding shelves of operator cabin, make the driving indoor environment better; The gear flexible cord handle the operating mechanism make the tractor chassis gearbox become tightlier beat, simpler, engage a gear is handled and is become softer, sensitiveer, more reliable, makes simultaneously to turn to the space openr; The use of driving direction dish tractor before and after being more suitable for.

The utility model can use on the driving direction dish tractor of various front and back.The use prospect is very wide.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is further specified.

Fig. 1 is the utility model operating mechanism plan view.

Fig. 2 is the utility model operating mechanism left view.

Fig. 3 is the utility model gear shift cover assembly plan view.

Fig. 4 is the utility model gear shift cover assembly plan view.

Fig. 5 is the utility model gear shift cover assembly sectional view.

Fig. 6 is the utility model gear shift cover profile schematic representation.

Among the figure: 1, main shift lever; 2, change yoke; 3, main transformer speed soft drawn wire; 4, change the fork soft drawn wire; 5, fork shift arm; 6, secondary speed change soft drawn wire; 7, backguy support plate; 8, change the fork pivoted arm; 9, pivoted arm after the secondary speed change; 10, secondary speed change pull bar; 11, pivoted arm after the main transformer speed; 12, main transformer speed pull bar; 13, pivoted arm before the main transformer speed; 14, gear shift cover; 15, secondary speed change rotating shaft; 16, splined shaft; 17, spline housing; 18, main transformer speed rotating shaft; 19, pivoted arm before the secondary speed change; 20, pivoted arm fulcrum; 21, I-reverse speed fork; 22, II-III shelves shift fork; 23, secondary gear shift fork; 24, spline axis hole; 25, secondary speed change rotary shaft hole; 26, main transformer speed rotary shaft hole; 27, pivoted arm branched shaft hole.

Embodiment

One, the switching of high and low gear

The high and low shift operating mechanism by secondary speed change soft drawn wire 6, secondary speed change after before the pivoted arm 9, secondary speed change pull bar 10, secondary speed change pivoted arm 19, secondary speed change rotating shaft 15, pivoted arm fulcrum 20 form; It is characterized in that: pivoted arm fulcrum 20 puts preceding pivoted arm 19 of secondary speed change and the preceding pivoted arm 13 of main transformer speed; Insert then in the pivoted arm branched shaft hole 27 of gear shift cover 14, and with nut screwing clamping pivoted arm fulcrum 20; Secondary speed change rotating shaft 15 is inserted in the secondary speed change rotary shaft hole 25 of gear shift covers 14, and the square hole of pivoted arm 9 is connected and uses nut screwing clamping, secondary speed change rotating shaft 15 the other ends then to insert in the fork pockets of the interior secondary gear shift fork 23 of gearbox after its square toes position and the secondary speed change; Secondary speed change pull bar 10 two ends respectively with secondary speed change before behind the pivoted arm 19, secondary speed change the circular hole of pivoted arm 9 be connected and use the cotter pin locking; Secondary speed change soft drawn wire 6 one ends are connected with the preceding pivoted arm 19 usefulness bearing pins of secondary speed change; The other end is connected on the secondary shift in the operator cabin with bearing pin; Through pushing away, draw secondary shift to drive secondary speed change soft drawn wire 6, thereby drive pivoted arm 19 before the secondary speed change, drive pivoted arm 6 after the secondary speed change by secondary speed change pull bar 10 again; Make its rotation and promote the shift fork displacement thereby steering force is reached secondary speed change rotating shaft 15, realize the switching of high and low shelves.

Two, the switching of main transformer speed gear

Main transformer speed operating mechanism by main transformer speed control stick 1, change yoke 2, main transformer speed soft drawn wire 3, change fork soft drawn wire 4, fork shift arm 5, change pivoted arm 13 before pivoted arm 11 after fork pivoted arm 8, the main transformer speed, main transformer speed pull bar 12, the main transformer speed, splined shaft 16, spline housing 17, the rotating shaft 18 of main transformer speed form; It is characterized in that: main transformer speed control stick 1 is installed in the driver's cabin, and yoke 2 and fork shift arm 5 are changed in welding on it; Main transformer speed rotating shaft 18 is inserted in the main transformer speed shaft hole 26 of gear shift cover 14; The square hole of pivoted arm 11 is connected the back nut screwing clamping after its square toes position and the main transformer speed; Pivoted arm 13 is enclosed within on the pivoted arm fulcrum 20 before the main transformer speed; Before the main transformer speed after pivoted arm 13 and the main transformer speed circular hole of pivoted arm 11 be connected with main transformer speed pull bar 12 and use the split pin locking, in the prong of fast rotating shaft 18 other end bulbs insertion of main transformer spline housing 17; Spline housing 17 is enclosed within on the splined shaft 16 and can slides; 16 of splined shafts are contained in the spline axis hole 24 of gear shift cover 14; Driving lever bulb on the spline housing 17 inserts in the fork pockets of II-III shelves shift fork 22 or I-reverse speed fork, splined shaft 16 square toes positions with change the square hole of pitching pivoted arm 8 and be connected and use nut check; Main transformer speed soft drawn wire 3 one ends are connected with the fast pivoted arm 13 usefulness bearing pins of main transformer, and the other end is connected with fork shift arm 5 usefulness bearing pins on the main shift lever 1; Changing fork soft drawn wire 4 one ends pitches pivoted arm 8 usefulness bearing pins and is connected with changing; The other end is connected with the yoke 2 usefulness bearing pins that change on the main shift lever 1; Since fork shift arm 5 with change yoke 2 and be welded on the main shift lever 1; Be interlinked mechanism; Pass through a left side during operation; The right side shake main shift lever 1 make change the fork soft drawn wire 4 push away; Draw and change fork pivoted arm 8 and make splined shaft rotation and drive spline housing 17; Be implemented in the switching between II-III shelves shift fork 22 and the I-reverse speed fork 21; And then push away; Drawing main shift lever 1 to drive fork shift arm 5 pushes away main transformer speed soft drawn wire 3; Pivoted arm 13 is swung before drawing main transformer speed; Pivoted arm 13 drives main transformer speed pull bar 12 again steering force is passed to pivoted arm 11 and the rotating shaft 18 of main transformer speed after the main transformer speed before the main transformer speed, realizes advancing or the switching of the gear that falls back.

Backguy support plate 7 is installed on the gear shift cover, is fixed by bolts on the gearbox casing with gear shift cover during installation, main transformer speed soft drawn wire 3, changes fork soft drawn wire 4 and secondary speed change soft drawn wire 6 usefulness nuts are locked on the corresponding mounting hole of backguy support plate 7.

Comprehensively above-mentioned; The utility model through the improvement to gear shift cover, adopts soft drawn wire to realize the switching of gear under the situation that does not change the gearbox gear transmission system, can obtain (3+1) * 2 gear; I.e. 6 forward gearss and 2 backward gears; The operating mechanism of tractor chassis gearbox is become tightlier beat, simpler, it is more reliable that engage a gear is handled the softer more sensitivity that becomes, and is more suitable for the use of forward and backward driving direction dish tractor.

Claims

1. driving direction dish tractor gear control device before and after a kind; Mainly by pivoted arm (11), spline housing (17), splined shaft (16) after pivoted arm (13), the main transformer speed before the rotating shaft (18) of main transformer speed, the main transformer speed, change pivoted arm (9) after pivoted arm (19) before fork pivoted arm (8), secondary speed change rotating shaft (15), the secondary speed change, the secondary speed change, gear shift cover (14) is formed; It is characterized in that: spline housing (17) is enclosed within on the splined shaft (16); Insert in the fork pockets of I-reverse speed fork (21) or II-III shelves shift fork (22) at its bulb position; Splined shaft (16) then is installed in the spline axis hole (24) of gear shift cover (14); Its square toes position is connected with the square hole that changes fork pivoted arm (8); Main transformer speed rotating shaft (18) simultaneously is installed in the main transformer speed rotary shaft hole (26) of gear shift cover (14), and the square hole of pivoted arm (11) is connected after its square toes position and the main transformer speed, in the fork pockets of the other end insertion spline housing (16); Secondary speed change rotating shaft (15) is installed in the secondary speed change rotary shaft hole (25) of gear shift cover (14), and the square hole of pivoted arm (9) is connected after its square toes position and the secondary speed change, and the other end inserts in the fork pockets of secondary gear shift fork (23), forms secondary selector gear.

2. a kind of front and back according to claim 1 driving direction dish tractor gear control device; It is characterized in that: pivoted arm (13) is enclosed within on the pivoted arm fulcrum (20) with the preceding pivoted arm (19) of secondary speed change before the main transformer speed; Pivoted arm fulcrum (20) passes pivoted arm branched shaft hole (27), uses nut check.

3. a kind of front and back according to claim 1 driving direction dish tractor gear control device is characterized in that: gear shift cover (14) is provided with spline axis hole (24), secondary speed change rotary shaft hole (25), main transformer speed rotary shaft hole (26), pivoted arm branched shaft hole (27).