Tractor gearbox power gear shifting mechanism

Abstract

The utility model discloses a power gear shifting mechanism of a tractor gearbox, and relates to the technical field of gear shifting. The tractor gearbox power gear shifting mechanism comprises a gear shifting structure, a shifting rod unit and a fixing shell, the shifting rod unit is connected to the bottom of the gear shifting structure, the fixing shell is connected to the shifting rod unit in a sleeving mode, the gear shifting structure comprises a limiting clamping shell and a gear shifting rod, the gear shifting rod is located on the inner side of the limiting clamping shell, and inserting plates are fixedly connected to the two ends of the limiting clamping shell. Limiting rods are fixedly arranged on the two sides of the limiting clamping shell, and the limiting rods are symmetrically distributed. According to the tractor gearbox power gear shifting mechanism, the hydraulic power assisting rod and the pressure sensor are arranged, when a driver conducts gear shifting operation, the arranged pressure sensor can bear pressure, the hydraulic power assisting rod can assist the driver in gear shifting according to signals received from the pressure sensor, operation of the driver is facilitated, and physical output is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to gear shifting technical field, concretely is a tractor gearbox power gear shifting mechanism. BACKGROUND

[0002] The gearbox power gear shifting mechanism is a crucial component in the gearbox, which is mainly responsible for switching between different gears during vehicle driving, thereby changing the transmission ratio to adapt to different driving conditions and power requirements.

[0003] The gap between the gears of the tractor gearbox may be larger than that of ordinary vehicles, and the driver needs to operate the gear lever more greatly; and the feel of different gears may be different, and some low gears may be relatively "heavy", that is, a larger force is needed to push the gear lever when shifting gears.

[0004] The gap between the gears of the gearbox may be larger than that of ordinary vehicles, and the driver needs to operate the gear lever more greatly, resulting in higher requirements for the force and direction of gear shifting, causing inconvenience in gear shifting; some low gears may be relatively "heavy", that is, a larger force is needed to push the gear lever when shifting gears, resulting in greater consumption of the driver's physical strength. SUMMARY

[0005] In view of the deficiencies of the prior art, the utility model provides a tractor gearbox power gear shifting mechanism, which solves the problems that the gap between the gears of the gearbox may be larger than that of ordinary vehicles, the driver needs to operate the gear lever more greatly, resulting in higher requirements for the force and direction of gear shifting, causing inconvenience in gear shifting; some low gears may be relatively "heavy", that is, a larger force is needed to push the gear lever when shifting gears, resulting in greater consumption of the driver's physical strength.

[0006] To achieve the above purpose, the utility model realizes the following technical scheme: a tractor gearbox power gear shifting mechanism, comprising a gear shifting structure, a lever unit and a fixed shell, the lever unit is connected at the bottom of the gear shifting structure, the fixed shell is sleeved on the lever unit, the gear shifting structure comprises a limiting clamp and a gear lever, the gear lever is located inside the limiting clamp, the limiting clamp is fixedly connected with a plug plate at both ends, limiting rods are fixedly arranged on both sides of the limiting clamp, the limiting rods are symmetrically distributed;

[0007] The lever unit comprises a low-speed linkage rod, a medium-speed linkage rod, a high-speed linkage rod and a power-assisted hydraulic rod, the power-assisted hydraulic rod is provided with a third group of plugs located above the low-speed linkage rod, the medium-speed linkage rod and the high-speed linkage rod.

[0008] Preferably, a linkage strip is fixedly arranged at the top of the gear lever, the linkage strip is clamped with a notch formed in the plug plate, a lever is fixedly arranged at the bottom of the gear lever, and the lever is located between the limiting rods.

[0009] Preferably, the low-speed linkage rod, the medium-speed linkage rod and the high-speed linkage rod are respectively fixed with a shift fork outside, and the low-speed linkage rod and the medium-speed linkage rod are respectively movably connected with the shift fork of the other.

[0010] Preferably, the output end of the hydraulic assist rod is fixedly connected with a connecting plate, and the connecting plate is fixedly connected with the low-speed linkage rod, the medium-speed linkage rod and the high-speed linkage rod.

[0011] Preferably, a shift piece is fixedly arranged on a section of the low-speed linkage rod, the medium-speed linkage rod and the high-speed linkage rod close to the gear shifting structure, and a bayonet is formed in the inner side of the shift piece.

[0012] Preferably, a pressure sensor is arranged on the low-speed linkage rod, the medium-speed linkage rod and the high-speed linkage rod, and the pressure sensor is connected with the connecting plate.

[0013] Preferably, the fixing shell comprises a shell body and a fixing sleeve, the fixing sleeve is arranged at the top of the shell body, the fixing sleeve is fixedly connected with the shell body, and a limiting sleeve is fixedly connected with the bottom of the shell body.

[0014] Preferably, the shift piece is clamped on the outer side of the shift rod, and the bayonet is clamped on the outer side of the limiting rod.

[0015] Preferably, the limiting sleeve is sleeved on the outer side of the low-speed linkage rod, the medium-speed linkage rod and the high-speed linkage rod, and the fixing sleeve is sleeved on the outer side of the hydraulic assist rod.

[0016] The utility model discloses a tractor gearbox power gear shifting mechanism, it has the beneficial effect as follows: be provided with hydraulic assist rod and pressure sensor, when the driver carries out gear shifting operation, the pressure sensor that sets will receive pressure, and the hydraulic assist rod will according to the signal received from the pressure sensor and will assist the driver to carry out gear shifting, and the driver is convenient to operate, and reduces physical consumption. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical scheme in the embodiment of the utility model or prior art, the following will be briefly introduced the drawing needed to be used in the embodiment or prior art description, obviously, the drawing in the following description only some embodiments of the utility model, for ordinary skilled person in the art, under the premise of not paying the creative labor, still can obtain other drawings according to these drawings.

[0018] Figure 1 It is the structural diagram of the utility model;

[0019] Figure 2 It is the structural diagram of the gear shifting structure of the utility model;

[0020] Figure 3It is a structure schematic view of the lever unit of the utility model.

[0021] Figure 4 It is a structure schematic view of the fixed shell of the utility model.

[0022] Figure 5 It is a rear side structure schematic view of the fixed shell of the utility model.

[0023] In the figure: 1, shift structure;11, limit card shell;111, plugboard;112, limit rod;12, shift lever;121, linkage strip;122, lever;2, lever unit;21, low-speed linkage rod;22, medium-speed linkage rod;23, high-speed linkage rod;24, shift fork;25, power hydraulic rod;251, connecting plate;26, shift piece;261, bayonet;27, pressure sensor;3, fixed shell;31, shell;311, limit sleeve;32, fixed sleeve. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical scheme and advantage of the utility model embodiment more clear, the technical scheme in the utility model embodiment is clearly and completely described, obviously, the described embodiment is a part of the embodiment of the utility model, rather than all the embodiment. Based on the embodiment in the utility model, all other embodiments obtained by the person skilled in the art without making creative labor belong to the protection scope of the utility model.

[0025] The embodiment of the application provides a tractor gearbox power shift mechanism, solves the problem that the gap between the gearboxes may be larger than that of ordinary vehicles, the driver needs to operate the shift lever more greatly, the force and direction of the shift are required to be grasped more highly, shift is inconvenient, some low gears may be relatively heavy, that is, a larger force is required to push the shift lever during shifting, and the problem that the driver consumes more physical strength is solved, the tractor driver is facilitated to shift, and the physical strength consumption of the driver is reduced.

[0026] The utility model embodiment discloses a tractor gearbox power shift mechanism.

[0027] According to the accompanying Figures 1-5 As shown, comprising shift structure 1, lever unit 2 and fixed shell 3, lever unit 2 is connected at the bottom of shift structure 1, fixed shell 3 is sleeved on lever unit 2, shift structure 1 includes limit card shell 11 and shift lever 12, shift lever 12 is located in the inside of limit card shell 11, limit card shell 11 both ends are fixedly connected with plugboard 111, limit card shell 11 both sides are fixedly provided with limit rod 112, limit rod 112 is symmetrically distributed;

[0028] The dial lever unit 2 comprises a low-speed linkage lever 21, a medium-speed linkage lever 22, a high-speed linkage lever 23 and a hydraulic booster lever 25, and the hydraulic booster lever 25 is provided with a third group of levers above the low-speed linkage lever 21, the medium-speed linkage lever 22 and the high-speed linkage lever 23.

[0029] The hydraulic booster lever 25 and the pressure sensor 27 are provided, when the driver performs the gear shifting operation, the pressure sensor 27 is subjected to pressure, and the hydraulic booster lever 25 assists the driver to perform the gear shifting according to the signal received from the pressure sensor 27, which is convenient for the driver to operate and reduces physical consumption.

[0030] Further, the linkage strip 121 is fixedly arranged at the top of the gear lever 12 and is clamped with the notch arranged on the plug plate 111, and the dial lever 122 is fixedly arranged at the bottom of the gear lever 12 and is located between the limiting levers 112.

[0031] Further, the low-speed linkage lever 21, the medium-speed linkage lever 22 and the high-speed linkage lever 23 are respectively fixedly sleeved with the dial fork 24, and the low-speed linkage lever 21 and the medium-speed linkage lever 22 are respectively movably inserted with the dial fork 24 of the other.

[0032] Further, the output end of the hydraulic booster lever 25 is fixedly connected with the connecting plate 251, and the connecting plate 251 is fixedly connected with the outer sides of the low-speed linkage lever 21, the medium-speed linkage lever 22 and the high-speed linkage lever 23.

[0033] In particular, a section of the low-speed linkage lever 21, the medium-speed linkage lever 22 and the high-speed linkage lever 23 fixedly connected with the outer side close to the gear shifting structure 1 is provided with the dial piece 26, and the inner side of the dial piece 26 is provided with the clamping opening 261.

[0034] In particular, the low-speed linkage lever 21, the medium-speed linkage lever 22 and the high-speed linkage lever 23 are respectively provided with the pressure sensor 27, and the pressure sensor 27 is connected with the connecting plate 251.

[0035] In particular, the fixed shell 3 comprises a shell body 31 and a fixed sleeve 32, the fixed sleeve 32 is located at the top of the shell body 31, the fixed sleeve 32 is fixedly connected with the shell body 31, and the bottom of the shell body 31 is fixedly connected with the limiting sleeve 311.

[0036] It needs to be particularly emphasized that the dial piece 26 is clamped on the outer side of the dial lever 122, and the clamping opening 261 is clamped on the outer side of the limiting lever 112.

[0037] It needs to be particularly emphasized that the limiting sleeve 311 is sleeved on the outer sides of the low-speed linkage lever 21, the medium-speed linkage lever 22 and the high-speed linkage lever 23, and the fixed sleeve 32 is sleeved on the outer side of the hydraulic booster lever 25.

[0038] Working principle: the gear lever 12 provided by the shift structure 1 is connected with the tractor gear lever, when the driver operates the gear lever to perform gear shifting operation, the gear lever 12 is driven to push the corresponding linkage rod to perform gear shifting, at this time, the pressure sensor 27 arranged on the linkage rod is subjected to pressure and sends a signal to the power-assisted hydraulic rod 25, after receiving the signal, the power-assisted hydraulic rod 25 starts to work, assisting the driver to perform gear shifting operation, reducing the physical consumption of the driver.

[0039] The basic principle and main features of the utility model and the advantages of the utility model are shown and described above. The skilled in the art should understand that the utility model is not limited by the above-mentioned embodiments, the above-mentioned embodiments and the description in the specification are only to illustrate the principle of the utility model, under the premise of not departing from the spirit and scope of the utility model, the utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the utility model claimed for protection. The scope of protection of the utility model is defined by the appended claims and their equivalents.

Claims

1. A tractor gearbox power shift mechanism, comprising a shift structure (1), a shift lever unit (2) and a fixed shell (3), the shift lever unit (2) being connected at the bottom of the shift structure (1), and the fixed shell (3) being sleeved on the shift lever unit (2), characterized in that, The shift structure (1) includes a limiting card shell (11) and a shift lever (12), the shift lever (12) is located inside the limiting card shell (11), both ends of the limiting card shell (11) are fixedly connected with an insertion plate (111), limiting rods (112) are fixedly arranged on both sides of the limiting card shell (11), and the limiting rods (112) are symmetrically distributed. The shifting lever unit (2) includes a low-speed linkage rod (21), a medium-speed linkage rod (22), a high-speed linkage rod (23) and a power-assisted hydraulic rod (25), and the power-assisted hydraulic rod (25) is provided with a third group of positions above the low-speed linkage rod (21), the medium-speed linkage rod (22) and the high-speed linkage rod (23).

2. A power shift mechanism for a tractor transmission according to claim 1, characterised in that The shift lever (12) is fixedly provided with a linkage strip (121) at the top, the linkage strip (121) is clamped with a notch formed in the insertion plate (111), and the shift lever (12) is fixedly provided with a shifting lever (122) at the bottom.

3. A power shift mechanism for a tractor transmission according to claim 1, wherein The low-speed linkage rod (21), the medium-speed linkage rod (22) and the high-speed linkage rod (23) are respectively fixedly sleeved with a shifting fork (24) outside, and the low-speed linkage rod (21) and the medium-speed linkage rod (22) are respectively movably inserted into the shifting fork (24) of the other.

4. A power shift mechanism for a tractor transmission according to claim 1, wherein The power-assisted hydraulic rod (25) is fixedly connected with a connecting plate (251) at the output end, and the connecting plate (251) is fixedly connected with the low-speed linkage rod (21), the medium-speed linkage rod (22) and the high-speed linkage rod (23) outside.

5. A power shift mechanism for a tractor transmission according to claim 1, wherein The low-speed linkage rod (21), the medium-speed linkage rod (22) and the high-speed linkage rod (23) are fixedly connected with a shifting piece (26) arranged near the shift structure (1) outside.

6. A power shift mechanism for a tractor transmission according to claim 1, wherein Pressure sensors (27) are arranged on the low-speed linkage rod (21), the medium-speed linkage rod (22) and the high-speed linkage rod (23) respectively, and the pressure sensors (27) are connected with the connecting plate (251).

7. A power shift mechanism for a tractor transmission according to claim 1, wherein The fixing shell (3) includes a shell (31) and a fixing sleeve (32), the fixing sleeve (32) is located at the top of the shell (31), the fixing sleeve (32) is fixedly connected with the shell (31), and the shell (31) is fixedly connected with a limiting sleeve (311) at the bottom.

8. A power shift mechanism for a tractor transmission according to claim 5, wherein The shifting piece (26) is clamped outside the shifting lever (122), and the clamping opening (261) is clamped outside the limiting rod (112).

9. A power shift mechanism for a tractor transmission according to claim 7, wherein The limiting sleeve (311) is sleeved outside the low-speed linkage rod (21), the medium-speed linkage rod (22) and the high-speed linkage rod (23), and the fixing sleeve (32) is sleeved outside the power-assisted hydraulic rod (25).

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