AMT gear shifting mechanism and tractor with same

Abstract

The utility model relates to an AMT gear shifting mechanism and a tractor with the AMT gear shifting mechanism. The AMT gear shifting mechanism comprises a gear shifting fork shaft, a gear shifting fork, a telescopic driving device and a gear shifting block, the gear shifting fork is located on one side of the gear shifting fork shaft, one end of the gear shifting fork is connected and assembled with the gear shifting fork shaft, the telescopic driving device is located on the other side of the gear shifting fork shaft, and one end of the gear shifting block is connected and assembled with the gear shifting fork shaft. The telescopic driving device is used for driving the gear shifting block to drive the gear shifting fork shaft and the gear shifting fork to move in the axial direction of the gear shifting fork shaft. The manual transmission has the advantages that the structural design is simple and reasonable, direct-drive gear shifting of the gear shifting fork is achieved through the telescopic action, automation of clutch separation, shifting fork and other manual operation in the manual transmission is achieved, the action error of a system is reduced, the gear shifting time is shortened, the starting gear shifting quality is good, work is stable, the transmission efficiency is high, the structure is compact, and space arrangement is flexible; and the power performance and the fuel economy are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to agricultural equipment field, especially a kind of AMT shift mechanism and tractor with it. BACKGROUND

[0002] AMT shift is commanded intelligently by electronic control unit (ECU), and when shift demand occurs, it will accurately command clutch separation, cutting off the link of power transmission. Next, AMT moves shift lever quickly through electric or hydraulic actuator, realizing seamless switching of gear.

[0003] Traditional agricultural machinery (such as tractor) manual shift, relatively complex structure, low shift accuracy, long operating time, high probability of misoperation, difficult space layout, low transmission efficiency, poor economy.

[0004] Therefore, it is necessary to develop an AMT shift mechanism to overcome the above technical problems. UTILITY MODEL CONTENTS

[0005] The utility model solves the technical problem to provide a kind of AMT shift mechanism and tractor with it, effectively overcome the defects of prior art.

[0006] The technical scheme for solving the above technical problem of the utility model is as follows:

[0007] An AMT shift mechanism, comprising a shift fork shaft, a shift fork, a telescopic drive device and a shift head, the shift fork is located on one side of the shift fork shaft, and one end is connected and assembled with the shift fork shaft, the telescopic drive device is located on the other side of the shift fork shaft, one end of the shift head is connected and assembled with the shift fork shaft, and the other end is connected and assembled with the telescopic end of the telescopic drive device, and the telescopic drive device is used to drive the shift head to drive the shift fork shaft and the shift fork to move along the axial direction of the shift fork shaft.

[0008] On the basis of the above technical scheme, the utility model can also be improved as follows.

[0009] Further, the shift fork shaft is provided with at least two, and the corresponding shift fork is provided with at least two, and the at least two shift forks are respectively one-to-one corresponding and assembled with the at least two shift fork shafts, and one shift head is respectively connected on each shift fork shaft, and each shift head is respectively connected with one telescopic drive device.

[0010] Further, one end of the shift fork is provided with a connecting seat, the shift fork shaft passes through the through hole of the connecting seat corresponding to the shift fork shaft, and the connecting seat is connected and assembled with the corresponding shift fork shaft by the first fastener.

[0011] Further, the first fastener is a fixing screw, the connecting seat side end is provided with a first screw hole, the first fastener is screwed into the first screw hole and abuts against the corresponding shift fork shaft.

[0012] Further, the shift knob one end is provided with a sleeve and is sleeved on the corresponding shift fork shaft through the sleeve, the sleeve is provided with a second fastener connected with the shift fork shaft.

[0013] Further, the second fastener is a fixing screw, the sleeve side wall is provided with a second screw hole, the second fastener is screwed into the second screw hole and abuts against the shift fork shaft.

[0014] Further, the shift fork shaft is provided with two and is distributed in parallel at intervals, the shift fork is provided with two.

[0015] Further, the telescopic drive device is an oil cylinder.

[0016] Further, the telescopic end of the telescopic drive device is detachably provided with a pin, the end of the pin is provided with a limiting block, the limiting block and the telescopic end of the telescopic drive device define an annular clamping groove, an un-closed annular connecting block is clamped in the annular clamping groove, the other end of the shift knob is provided with an embedding groove, and the annular connecting block is embedded in the embedding groove.

[0017] The utility model discloses the beneficial effect is: simple, reasonable, utilize telescopic action to realize the direct drive gear shifting of shift fork, realize the automation of clutch separation, shift fork etc.

[0018] Also provide a tractor, including AMT gear shifting mechanism. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is the structure elevation view of AMT gear shifting mechanism of the utility model;

[0020] Figure 2 It is the structure side view of AMT gear shifting mechanism of the utility model;

[0021] Figure 3 It is the structure schematic view of telescopic drive device and limiting block assembly in AMT gear shifting mechanism of the utility model.

[0022] In the drawings, the component list represented by each sign is as follows:

[0023] 1, shift fork shaft; 2, shift fork; 3, telescopic drive device; 4, shift head; 21, connecting seat; 31, limiting block; 32, annular connecting block. DETAILED DESCRIPTION

[0024] The principles and features of the present application are described below in conjunction with the accompanying drawings, and the examples are only used to explain the present application and are not intended to limit the scope of the present application.

[0025] Embodiment

[0026] As shown in Figure 1 , 2 , the AMT shift mechanism of the present embodiment includes a shift fork shaft 1, a shift fork 2, a telescopic drive device 3, and a shift head 4. The shift fork 2 is located on one side of the shift fork shaft 1 and is connected and assembled to one end of the shift fork shaft 1. The telescopic drive device 3 is located on the other side of the shift fork shaft 1. One end of the shift head 4 is connected and assembled to the shift fork shaft 1, and the other end is connected and assembled to the telescopic end of the telescopic drive device 3. The telescopic drive device 3 is used to drive the shift head 4 to drive the shift fork shaft 1 and the shift fork 2 to move along the axial direction of the shift fork shaft 1.

[0027] In the use process of the AMT shift mechanism of the present embodiment, the telescopic action of the telescopic drive device 3 drives the shift head 4 to drive the connected shift fork shaft 1 to move along the axial direction of itself, thereby driving the shift fork 2 connected to the shift fork shaft 1 to move along the axial direction of the shift fork shaft 1, realizing the shift operation. The entire mechanism has a simple and reasonable structure design, utilizes the telescopic action to realize the direct drive shift of the shift fork, realizes the automation of the manual clutch separation, shift fork, and other manual operations in the manual transmission, reduces the action error of the system, shortens the shift time, has good starting shift quality, and has stable work, high transmission efficiency, compact structure, flexible space arrangement, and improved power performance and fuel economy.

[0028] As a preferred embodiment, the shift fork shaft 1 is provided with at least two, and the shift fork 2 is correspondingly provided with at least two. The at least two shift forks 2 are respectively and correspondingly assembled with the at least two shift fork shafts 1. Each shift fork shaft 1 is respectively and correspondingly connected with one shift head 4. Each shift head 4 is respectively and correspondingly connected with one telescopic drive device 3.

[0029] In the above embodiment, the shift fork shaft 1 is provided with multiple shift forks 2, each of which corresponds to one gear position. Each shift fork shaft 1 is provided with one telescopic drive device 3, realizing one-to-one driving and thereby realizing flexible switching operation of multiple gears.

[0030] As a preferred embodiment, one end of each of the shift forks 2 is provided with a connecting seat 21, and the shift fork shaft 1 is respectively and correspondingly inserted through the through hole of the connecting seat 21, and the connecting seat 21 is connected and assembled with the corresponding shift fork shaft 1 by the first fastener.

[0031] In the above embodiment, one end of each of the shift forks 2 is assembled with the plurality of shift fork shafts 1 through the connecting seat 21, specifically, one end of the shift fork 2 is sleeved with the corresponding shift fork shaft 1 through the connecting seat 21, and then fastened by the first fastener, and one end of the shift fork 2 is assembled with the remaining shift fork shaft 1 through the plug-in sleeve cooperation, which can ensure that the shift fork shaft 1 moves axially and does not deviate during movement.

[0032] In the embodiment, the first fastener is a jam nut, the side end of the connecting seat 21 is provided with a first screw hole, the first fastener is screwed into the first screw hole and abuts against the corresponding shift fork shaft 1. By tightening the first fastener, the first fastener and the corresponding part of the shift fork shaft 1 are tightly abutted, so that they can be stably assembled and linked. It is also convenient and fast to disassemble.

[0033] As a preferred embodiment, one end of the shift fork 4 is provided with a sleeve a, and the sleeve is sleeved on the corresponding shift fork shaft 1, and the sleeve is provided with a second fastener connected with the shift fork shaft 1.

[0034] In the above embodiment, one end of the shift fork 4 is sleeved with the shift fork shaft 1 through the sleeve a, and the two are fastened by the second fastener to realize stable assembly of the two, and the two are also simple and fast to disassemble.

[0035] In the embodiment, the second fastener is a jam nut, the side wall of the sleeve is provided with a second screw hole, the second fastener is screwed into the second screw hole and abuts against the shift fork shaft 1. By tightening the second fastener, the second fastener and the corresponding part of the shift fork shaft 1 are tightly abutted, so that they can be stably assembled and linked. When disassembling, the second fastener is loosened, and the axial movement makes the two separate from each other.

[0036] In the embodiment, the shift fork shaft 1 is provided with two, and the two are distributed in parallel and spaced apart upward and downward, and the shift fork 2 is provided with two.

[0037] In the embodiment, the telescopic driving device 3 adopts an oil cylinder of an appropriate model.

[0038] As a preferred embodiment, as shown in Figure 3As shown, the telescopic end of the telescopic drive device 3 is detachably provided with a pin b, the end of the pin b is provided with a limiting block 31, the limiting block 31 and the telescopic end of the telescopic drive device 3 define an annular clamping groove, an un-closed annular connecting block 32 is clamped in the annular clamping groove, the other end of the gear shifting knob 4 is provided with an embedding groove, and the annular connecting block 32 is embedded in the embedding groove.

[0039] In the embodiment, when the gear shifting knob 4 is assembled with the telescopic drive device 3, the other end of the gear shifting knob 4 is embedded with the annular connecting block 32 through the embedding groove, then the pin is passed through the inner hole of the annular connecting block 32, and then the pin is connected with the end of the telescopic drive device 3, after assembly, the annular connecting block 32 is limited between the end of the telescopic drive device 3 and the limiting block 31, and the whole structure makes the gear shifting knob 4 and the telescopic drive device 3 very convenient to disassemble and assemble.

[0040] In the embodiment, the pin and the telescopic end of the telescopic drive device 3 can be screw-connected, which facilitates the assembly of the annular connecting block 32.

[0041] Embodiment 2

[0042] The tractor of the embodiment comprises the AMT gear shifting mechanism of the embodiment 1.

[0043] In the description of the utility model, it is understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, a particular orientation and operation, and therefore cannot be understood as a limitation on the utility model.

[0044] In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first" and "second" can explicitly or implicitly include at least one of the features. In the description of the utility model, the meaning of "multiple" is at least two, for example, two, three, etc., unless otherwise explicitly specified.

[0045] In the utility model, unless another definite provision and limitation, the terms "mount", "link", "connect", "fix" and so on should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or be integrated;Can be mechanical connection, also can be electrical connection;Can be direct connection, also can indirectly connect through intermediate medium, can be the communication of two element interiors or the interaction of two elements, unless another definite limitation.For ordinary skilled in the art, can understand the specific meaning of the above terms in the utility model according to specific circumstances.

[0046] In the utility model, unless another definite provision and limitation, the first feature is "on" or "under" the second feature can be that the first and second features directly contact, or the first and second features indirectly contact through intermediate medium.Moreover, the first feature "over", "above" and "on" the second feature can be that the first feature is directly above or obliquely above the second feature, or just indicates that the first feature is higher than the second feature in horizontal height.The first feature "under", "below" and "on" the second feature can be that the first feature is directly below or obliquely below the second feature, or just indicates that the first feature is lower than the second feature in horizontal height.

[0047] In the description of the specification, the description of the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model.In the specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example.Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.In addition, the skilled in the art can combine and combine the different embodiments or examples described in the specification and the features of different embodiments or examples without contradiction.

[0048] Although the embodiments of the utility model have been shown and described above, it can be understood that the above-mentioned embodiments are exemplary and cannot be understood as limiting the utility model, and the skilled in the art can change, modify, replace and modify the above-mentioned embodiments within the scope of the utility model.

Claims

1. An AMT shift mechanism characterized by: The application relates to an AMT gear shifting mechanism, which comprises a gear shifting fork shaft (1), gear shifting forks (2), telescopic driving devices (3) and gear shifting heads (4), wherein the gear shifting forks (2) are arranged on one side of the gear shifting fork shaft (1) and connected to one end of the gear shifting fork shaft (1), the telescopic driving devices (3) are arranged on the other side of the gear shifting fork shaft (1), one end of the gear shifting head (4) is connected to the gear shifting fork shaft (1), and the other end of the gear shifting head (4) is connected to the telescopic end of the telescopic driving device (3), and the telescopic driving device (3) is used for driving the gear shifting head (4) to drive the gear shifting fork shaft (1) and the gear shifting forks (2) to move along the axial direction of the gear shifting fork shaft (1).

2. An AMT gear shift mechanism according to claim 1, characterized in that: The gear shifting fork shaft (1) is provided with at least two gear shifting fork shafts, and the gear shifting forks (2) are provided with at least two gear shifting forks; the gear shifting forks (2) are one-to-one corresponding to the gear shifting fork shafts (1) and are connected to the gear shifting fork shafts (1), respectively; one gear shifting head (4) is connected to each gear shifting fork shaft (1); and one telescopic driving device (3) is connected to each gear shifting head (4).

3. An AMT gear shift mechanism according to claim 2, wherein: One end of each gear shifting fork (2) is provided with a connecting seat (21), the gear shifting fork shaft (1) passes through the through holes of all the connecting seats (21) and is connected to the connecting seats (21) through first fasteners.

4. An AMT shift mechanism according to claim 3, characterised in that: The first fastener is a fastening screw, the side end of the connecting seat (21) is provided with a first screw hole, the first fastener is screwed into the first screw hole and abuts against the corresponding gear shifting fork shaft (1).

5. An AMT shift mechanism according to claim 2, characterized in that: One end of the gear shifting head (4) is provided with a sleeve, the sleeve is sleeved on the corresponding gear shifting fork shaft (1), and a second fastener is connected to the gear shifting fork shaft (1) and arranged on the sleeve.

6. An AMT shift mechanism according to claim 5, characterised in that: The second fastener is a fastening screw, the side wall of the sleeve is provided with a second screw hole, the second fastener is screwed into the second screw hole and abuts against the gear shifting fork shaft (1).

7. An AMT gear shift mechanism according to any one of claims 2 to 6, wherein: The gear shifting fork shaft (1) is provided with two gear shifting fork shafts which are arranged in parallel and spaced apart from each other, and the gear shifting forks (2) are provided with two gear shifting forks.

8. An AMT gear shift mechanism according to any one of claims 1 to 6, characterised in that: The telescopic driving device (3) is an oil cylinder.

9. An AMT gear shift mechanism according to any one of claims 1 to 6, characterised in that: The telescopic end of the telescopic driving device (3) is detachably provided with a pin, the end of the pin is provided with a limiting block (31), an annular clamping groove is defined between the telescopic end of the telescopic driving device (3) and the limiting block (31), an open annular connecting block (32) is clamped in the annular clamping groove, the other end of the gear shifting head (4) is provided with an embedding groove, and the annular connecting block (32) is embedded in the embedding groove.

10. A tractor characterised in that: The application further relates to an AMT gear shifting mechanism comprising the AMT gear shifting mechanism according to any one of claims 1 to 9.

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