Gear shifting control mechanism

Abstract

The utility model discloses a gear-shifting control mechanism, which relates to the technical field of gearbox gear-shifting control mechanisms and comprises a control mechanism and a gear-shifting mechanism, the control mechanism is provided with a control rod, a first rocker arm and a second rocker arm, the first rocker arm and the second rocker arm are controlled by the control rod to rotate, and the gear-shifting mechanism is provided with a rotary gear-selecting rocker arm and a rotary gear-shifting rocker arm. The gear shifting control mechanism further comprises a first flexible shaft and a second flexible shaft, the first flexible shaft is hinged between the first rocker arm and the gear selecting rocker arm, and the second flexible shaft is hinged between the second rocker arm and the gear shifting rocker arm. Under the control of the control rod, the first rocker arm is used for driving the first flexible shaft to lift the gear selecting rocker arm so that the gear selecting rocker arm can control the gear shifting mechanism to select gears, and the second rocker arm is used for driving the second flexible shaft to lift the gear shifting rocker arm so that the gear shifting rocker arm can control the gear shifting mechanism to shift gears. According to the gear shifting control mechanism, the space arrangement of the control mechanism in a cab is facilitated, vibration transmitted to the control mechanism is effectively reduced, the driving comfort is greatly improved, and the actual requirement is met.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of gearbox shifting control mechanism, specifically relates to a shifting control mechanism. BACKGROUND

[0002] The shifting control mechanism of tractor gearbox generally includes control mechanism and shifting mechanism, at present, the control mechanism is generally connected with gearbox through shifting mechanism, which can control gearbox, but on the one hand, the installation position of control mechanism in the cab depends on the installation position of shifting mechanism, which is not conducive to the space arrangement of control mechanism in the cab; on the other hand, the vibration of tractor engine end can be directly transmitted to control mechanism through shifting mechanism, which seriously reduces the driving comfort, therefore, the existing shifting control mechanism cannot meet the actual demand. SUMMARY

[0003] In view of the above defects in the prior art, the utility model aims at providing a shifting control mechanism, which is not only conducive to the space arrangement of control mechanism in the cab, but also effectively reduces the vibration transmitted to control mechanism, greatly improves the driving comfort, and meets the actual demand.

[0004] In order to solve the above technical problems, the utility model adopts the technical scheme of:

[0005] A shifting control mechanism, including control mechanism and shifting mechanism, the control mechanism has a control lever and a first rocker arm and a second rocker arm rotated by the control lever, the shifting mechanism has a selection rocker arm and a shifting rocker arm, the shifting control mechanism further includes a first flexible shaft and a second flexible shaft, the first flexible shaft is hinged between the first rocker arm and the selection rocker arm, and the second flexible shaft is hinged between the second rocker arm and the shifting rocker arm; under the control of the control lever, the first rocker arm is used to drive the first flexible shaft to pull the selection rocker arm to make the selection rocker arm control the selection of the shifting mechanism, and the second rocker arm is used to drive the second flexible shaft to pull the shifting rocker arm to make the shifting rocker arm control the shifting of the shifting mechanism.

[0006] Among them, the shifting mechanism includes a shifting shaft, a selection sleeve, a selection rocker arm, a shifting rocker arm and a shifting head for connecting with the gearbox, the shifting shaft is rotatably sleeved in the selection sleeve, and an axial limiting structure is arranged between the shifting shaft and the selection sleeve; the selection rocker arm is fixedly connected with a selection head for driving the selection sleeve; one end of the shifting shaft is axially slidably connected with the shifting rocker arm, and a rotation limiting structure is arranged between the shifting shaft and the shifting rocker arm; the other end of the shifting shaft passes through the gearbox shell and is connected with the shifting head, and an elastic reset structure is arranged between the shifting head and the gearbox shell.

[0007] One end of the selection rocker arm is hingedly connected with the first soft shaft, and the other end of the selection rocker arm is provided with a first connecting shaft, and the selection knob is arranged on the first connecting shaft.

[0008] The selection knob sleeve comprises a sleeve body and a shift fork structure for cooperating with the selection knob, the shift shaft is rotatably sleeved in the sleeve body, and the selection knob is inserted in the shift fork structure.

[0009] One end of the shift shaft is fixedly provided with a connecting sleeve, and an annular limiting table is radially protruded on the shift shaft, the connecting sleeve and the limiting table constitute the axial limiting structure, and the sleeve body is located between the connecting sleeve and the limiting table.

[0010] One end of the shift rocker arm is hingedly connected with the second soft shaft, the other end of the shift rocker arm is fixedly provided with a second connecting shaft which is axially slidably connected with the connecting sleeve, the shift shaft and the shift rocker arm are axially slidably connected through the second connecting shaft and the connecting sleeve, and the rotation limiting structure is arranged between the second connecting shaft and the connecting sleeve.

[0011] The connecting sleeve comprises a circular hole section and an oblong hole section, the connecting sleeve is fixedly sleeved on the shift shaft through the circular hole section, the second connecting shaft has an oblong section which is matched with the oblong hole section, the connecting sleeve is axially slidably sleeved on the oblong section through the oblong hole section, and the oblong hole section and the oblong section constitute the rotation limiting structure.

[0012] The elastic reset structure is a spring, and the spring is sleeved on the shift shaft.

[0013] The rotation axis of the first rocker arm is perpendicular to the rotation axis of the second rocker arm, the left-right movement of the operating rod is used for driving the rotation of the first rocker arm, and the front-rear movement of the operating rod is used for driving the rotation of the second rocker arm.

[0014] By adopting the above technical scheme, the present application has the following beneficial effects:

[0015] The gear shifting control mechanism provided by the utility model adopts a new structure form, a first flexible shaft is hinged between the first rocker arm of the control mechanism and the gear shifting mechanism, a second flexible shaft is hinged between the second rocker arm of the control mechanism and the gear shifting mechanism, the soft connection of the control mechanism and the gear shifting mechanism is realized, the installation position of the control mechanism is not limited by the installation position of the gear shifting mechanism, the space arrangement of the control mechanism in the cab is facilitated, the vibration transmitted from the tractor bottom engine end to the control mechanism is effectively reduced, the driving comfort is greatly improved, and the actual demand is met. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is the structure schematic view of the gear shifting control mechanism of the utility model;

[0017] Figure 2 is Figure 1 the installation schematic view of the gear shifting mechanism in the utility model;

[0018] Figure 3 is Figure 1 the structure schematic view of the gear shifting mechanism in the utility model;

[0019] Figure 4 is Figure 3 the explosion view of the utility model;

[0020] In the drawing: 100, control mechanism;101, control rod;102, first rocker arm;103, second rocker arm;200, gear shifting mechanism;1, gear shifting shaft;11, limiting table;2, gear shifting sleeve;21, sleeve body;22, fork structure;3, gear shifting rocker arm;4, gear shifting head;5, gearbox shell;6, connecting sleeve;61, long circular hole section;7, gear shifting rocker arm;8, second connecting shaft;81, long circular section;9, spring;10, gear shifting head;12, first flexible shaft;13, second flexible shaft;14, first connecting shaft. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical scheme and advantages of the utility model more clear and obvious, the utility model is further described in detail below by combining with the drawings and examples, and it should be understood that the specific examples described here are only used for explaining the utility model, and are not used for limiting the utility model.

[0022] As Figures 1 to 4As shown, the embodiment discloses a shift control mechanism, which comprises a control mechanism 100 and a shift mechanism 200, the control mechanism 100 has a control rod 101, a first rocker arm 102 and a second rocker arm 103 which are rotated by the control rod 101, the shift mechanism 200 has a selection rocker arm 7 and a shift rocker arm 3 which are rotated, the shift control mechanism further comprises a first flexible shaft 12 and a second flexible shaft 13, the first flexible shaft 12 is hinged between the first rocker arm 102 and the selection rocker arm 7, the second flexible shaft 13 is hinged between the second rocker arm 103 and the shift rocker arm 3; under the control of the control rod 101, the first rocker arm 102 is used to drive the first flexible shaft 12 to pull the selection rocker arm 7 to make the selection rocker arm 7 control the selection of the shift mechanism 200, and the second rocker arm 103 is used to drive the second flexible shaft 13 to pull the shift rocker arm 3 to make the shift rocker arm 3 control the shift of the shift mechanism 200.

[0023] The shift mechanism 200 in the embodiment comprises a shift shaft 1, a selection shift sleeve 2, a selection rocker arm 7, a shift rocker arm 3 and a shift shift head 4 which is used to be connected with a gearbox, the shift shaft 1 is rotatably sleeved in the selection shift sleeve 2, and an axial limiting structure is arranged between the shift shaft 1 and the selection shift sleeve 2; the selection rocker arm 7 is fixedly connected with a selection shift head 10 which is used to shift the selection shift sleeve 2; one end of the shift shaft 1 is axially slidably connected with the shift rocker arm 3, and a rotation limiting structure is arranged between the shift shaft 1 and the shift rocker arm 3; the other end of the shift shaft 1 passes through a gearbox shell 5 and is connected with the shift shift head 4, and an elastic reset structure is arranged between the shift shift head 4 and the gearbox shell 5.

[0024] One end of the selection rocker arm 7 in the embodiment is hinged with the first flexible shaft 12, the other end of the selection rocker arm 7 is provided with a first connecting shaft 14, and the selection shift head 10 is arranged on the first connecting shaft 14.

[0025] The selection shift sleeve 2 in the embodiment comprises a sleeve body 21 and a shift fork structure 22 which is used to cooperate with the selection shift head 10, the shift shaft 1 is rotatably sleeved in the sleeve body 21, and the selection shift head 10 is inserted in the shift fork structure 22.

[0026] In the embodiment, one end of the shift shaft 1 is fixedly provided with a connecting sleeve 6, and an annular limiting table 11 is radially protruded on the shift shaft 1, the connecting sleeve 6 and the limiting table 11 constitute the above-mentioned axial limiting structure, and the sleeve body 21 is located between the connecting sleeve 6 and the limiting table 11.

[0027] In the embodiment, one end of the shift rocker arm 3 is hinged with the second flexible shaft 13, the other end of the shift rocker arm 3 is fixedly provided with a second connecting shaft 8 which is axially slidably connected with the connecting sleeve 6, the shift shaft 1 and the shift rocker arm 3 are axially slidably connected through the second connecting shaft 8 and the connecting sleeve 6, and the rotation limiting structure is arranged between the second connecting shaft 8 and the connecting sleeve 6.

[0028] Specifically, the connecting sleeve 6 comprises a round hole section and an oblong hole section 61, the connecting sleeve 6 is fixedly sleeved on the shift shaft 1 through the round hole section; the second connecting shaft 8 has an oblong section 81 matched with the oblong hole section 61, the connecting sleeve 6 is axially slidably sleeved on the oblong section 81 through the oblong hole section 61, and the oblong hole section 61 and the oblong section 81 constitute a rotation limiting structure.

[0029] The elastic reset structure in the embodiment is a spring 9, and the spring 9 is sleeved on the shift shaft 1.

[0030] The shift mechanism 200 in the embodiment separates the selection and the shift and controls them, achieves the purposes of short transmission route, less involved parts and high transmission efficiency, and realizes the precise control of the shift control.

[0031] The control mechanism 100 in the embodiment is a commonly used component on a tractor, which is prior art, wherein the rotation axis of the first rocker arm 102 is perpendicular to the rotation axis of the second rocker arm 103, the left-right movement of the control lever 101 is used to drive the rotation of the first rocker arm 102, the front-back movement of the control lever 101 is used to drive the rotation of the second rocker arm 103, and the remaining structures are not described herein.

[0032] In use, the left-right movement of the control lever 101 drives the rotation of the first rocker arm 102 to make the first flexible shaft 12 pull the selection rocker arm 7, the selection rocker arm 7 pulled rotates around the first connecting shaft 14 to drive the rotation of the selection knob 10 arranged on the first connecting shaft 14, the rotation of the selection knob 10 drives the axial movement of the selection sleeve 2, the axial movement of the selection sleeve 2 drives the axial movement of the shift shaft 1 and the shift knob 4 connected to the shift shaft 1, thereby realizing the selection control of the shift knob 4; the front-back movement of the control lever 101 drives the rotation of the second rocker arm 103 to make the second flexible shaft 13 pull the shift rocker arm 3, the shift rocker arm 3 pulled drives the rotation of the shift shaft 1 and the shift knob 4 on the shift shaft 1, thereby realizing the shift control of the shift knob 4.

[0033] The above describes a preferred embodiment of the shift control mechanism in the utility model, and more embodiments are not described herein.

[0034] In summary, the utility model discloses gear shift operating mechanism through the hinge first soft axle 12 between the first rocker arm 102 of operating mechanism 100 and the gear shift mechanism 200 gear shift rocker arm 7, the hinge second soft axle 13 between the second rocker arm 103 of operating mechanism 100 and the gear shift mechanism 200 gear shift rocker arm 3, realized the soft connection of operating mechanism 100 and gear shift mechanism 200, this not only makes the installation position of operating mechanism 100 not limited to the installation position of gear shift mechanism 200, is favorable to the space arrangement of operating mechanism 100 in cab, and effectively reduces the vibration that by tractor bottom engine end is passed to operating mechanism 100 on, greatly improved the driving comfort, satisfied actual demand.

[0035] The utility model is not limited to the above specific embodiment, and all kinds of variations made by the ordinary skill in the art from the above concept without creative labor fall within the protection scope of the utility model.

Claims

1. A shift operating mechanism comprising an operating mechanism and a shift mechanism, the operating mechanism having an operating lever, a first rocker arm and a second rocker arm rotated by the operating lever, and the shift mechanism having a selection rocker arm and a shift rocker arm, characterized in that, the shift operating mechanism further comprises a first flexible shaft and a second flexible shaft, the first flexible shaft is hinged between the first rocker arm and the selection rocker arm, and the second flexible shaft is hinged between the second rocker arm and the shift rocker arm; under the operation of the operating lever, the first rocker arm is used to drive the first flexible shaft to pull the selection rocker arm to make the selection rocker arm operate the shift mechanism selection, and the second rocker arm is used to drive the second flexible shaft to pull the shift rocker arm to make the shift rocker arm operate the shift mechanism shift; the shift mechanism comprises a shift shaft, a selection shift sleeve, a selection rocker arm, a shift rocker arm and a shift shift head used for connecting with a gearbox, the shift shaft is rotatably sleeved in the selection shift sleeve, and an axial limiting structure is arranged between the shift shaft and the selection shift sleeve; the selection rocker arm is fixedly connected with a selection shift head used for shifting the selection shift sleeve; one end of the shift shaft is axially slidably connected with the shift rocker arm, and a rotation limiting structure is arranged between the shift shaft and the shift rocker arm; the other end of the shift shaft passes through a gearbox shell and is connected with the shift shift head, and an elastic reset structure is arranged between the shift shift head and the gearbox shell. one end of the selection rocker arm is hinged with the first flexible shaft, and the other end of the selection rocker arm is provided with a first connecting shaft, and the selection shift head is arranged on the first connecting shaft. the selection shift sleeve comprises a sleeve body and a shift fork structure used for cooperating with the selection shift head, the shift shaft is rotatably sleeved in the sleeve body, and the selection shift head is inserted in the shift fork structure. one end of the shift rocker arm is hinged with the second flexible shaft, and the other end of the shift rocker arm is fixedly provided with a second connecting shaft axially slidably connected with the connecting sleeve, the shift shaft and the shift rocker arm are axially slidably connected through the second connecting shaft and the connecting sleeve, and the rotation limiting structure is arranged between the second connecting shaft and the connecting sleeve.

2. The shift operator mechanism according to claim 1, characterized by the connecting sleeve comprises a circular hole section and an oblong hole section, the connecting sleeve is fixedly sleeved on the shift shaft through the circular hole section; the second connecting shaft has an oblong section matched with the oblong hole section, the connecting sleeve is axially slidably sleeved on the oblong section through the oblong hole section, and the oblong hole section and the oblong section constitute the rotation limiting structure.

3. The shift operator mechanism according to claim 1, characterized by, the elastic reset structure is a spring, and the spring is sleeved on the shift shaft.

4. The shift operator mechanism according to claim 3, characterized in that, the rotation axis of the first rocker arm is perpendicular to the rotation axis of the second rocker arm, left and right movement of the operating lever is used to drive the first rocker arm to rotate, and front and rear movement of the operating lever is used to drive the second rocker arm to rotate.

5. The shift operator mechanism according to claim 4, characterized in that, ​ 6. The shift operator mechanism according to claim 5, characterized in that ​ 7. The shift operator mechanism of claim 1, wherein ​ 8. The shift operator according to any one of claims 1 to 7, characterized in that ​

Images