Inertia synchronizer for agricultural tractor and tractor

Abstract

The utility model relates to the technical field of transmission variable-speed walking, in particular to an inertia synchronizer for an agricultural tractor and the tractor. The inertia synchronizer for the agricultural tractor comprises a transmission shaft, and a first transmission gear, a second transmission gear and a reversing wheel are arranged on the transmission shaft; the rotation directions of the first transmission gear and the second transmission gear are opposite, and the first transmission gear and the second transmission gear are rotatably arranged on the transmission shaft through bearings respectively; the reversing wheel is located between the first transmission gear and the second transmission gear, and the reversing wheel is configured to move horizontally in the axial direction of the transmission shaft to be combined with the first transmission gear or the second transmission gear into a whole to drive the transmission shaft to rotate. When the reversing wheel moves horizontally, the connecting protrusion can be clamped with the connecting groove, rapid combination of the reversing wheel and the first transmission gear or the second transmission gear is achieved, and device parts are easy to configure and assemble.

Description

Technical Field

[0001] The utility model relates to the technical field of transmission speed change and travel, in particular to an inertia synchronizer for an agricultural tractor and a tractor. Background Art

[0002] When switching between forward and reverse gears, the gearbox of traditional large machinery such as agricultural tractors needs to stop the tractor first and then shift gears, and the shifting process is relatively cumbersome.

[0003] To solve the above problems, the existing heavy-duty gearbox main case synchronizer assembly mostly adopts a gear seat, a gear sleeve, a combined gear ring, a synchronizer ring, a spring, and a push block (support column) structure. The pre-synchronization scheme adopts a spring and a push block (support column) structure. In the existing technical scheme, the pre-synchronization function is a combination of 3-4 groups of springs and push blocks (push blocks), with a large number of parts, high cost and difficult assembly.

[0004] Therefore, the present application provides an inertia synchronizer for an agricultural tractor, which solves the problem that the existing synchronizer assembly has many types and quantities of parts and a complex structure. Utility Model Content

[0005] In order to solve the above problems, the utility model provides an inertia synchronizer for an agricultural tractor.

[0006] The utility model solves the technical problem by adopting the following technical solution: an inertia synchronizer for an agricultural tractor comprises a transmission shaft, on which a first transmission gear, a second transmission gear and a reversing wheel are arranged;

[0007] The first transmission gear and the second transmission gear have opposite rotation directions, and the first transmission gear and the second transmission gear are rotatably arranged on the transmission shaft through bearings respectively;

[0008] The reversing wheel is located between the first transmission gear and the second transmission gear, and the reversing wheel is configured to be able to move horizontally along the axial direction of the transmission shaft and to be combined with the first transmission gear or the second transmission gear as a whole to drive the transmission shaft to rotate.

[0009] As an optimization, the reversing wheel includes a reversing wheel body, and a first reversing surface facing the first transmission gear and a second reversing surface facing the second transmission gear located on both sides of the reversing wheel body; one of the first reversing surface and the first transmission gear is provided with a connecting protrusion, and the other is provided with a connecting groove that is snap-fitted with the connecting protrusion, and one of the second reversing surface and the second transmission gear is provided with a connecting protrusion, and the other is provided with a connecting groove that is snap-fitted with the connecting protrusion.

[0010] As an optimization, the connecting protrusion is an arc-shaped protrusion, and the connecting groove is an arc-shaped groove.

[0011] As an optimization, a support rod is slidably connected to the middle part of the reversing wheel body, and a connecting protrusion is fixed to the end of the support rod.

[0012] As an optimization, the support rods on both sides of the reversing wheel body are provided with limiting rings, and the outside of the support rods between the limiting rings (51) and the reversing wheel body is provided with supporting springs.

[0013] As an optimization, a fixing pin is provided on the transmission shaft, and the reversing wheel is provided on the transmission shaft and the fixing pin, and is configured to be able to move horizontally along the length direction of the fixing pin.

[0014] As an optimization, both ends of the fixing pin in the length direction are provided with limiting portions for limiting the horizontal displacement of the reversing wheel.

[0015] As an optimization, the reversing wheel is driven by a pneumatic system.

[0016] As an optimization, both ends of the transmission are connected to the wheels respectively.

[0017] The technical solution also provides a tractor, comprising the above-mentioned inertia synchronizer for agricultural tractors.

[0018] The inertia synchronizer for agricultural tractors of this scheme has the following advantages:

[0019] The reversing wheel of the present application is provided with connecting protrusions on both sides. When the reversing wheel moves horizontally, the connecting protrusions can engage with the connecting grooves to achieve rapid connection between the reversing wheel and the first transmission gear or the second transmission gear. The device parts are simply configured and assembled. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Attached Figure 1 It is a schematic diagram of the structure of the utility model.

[0021] Attached Figure 2 It is a schematic diagram of the cutaway structure of the utility model.

[0022] Attached Figure 3 For this utility model Figure 2 Schematic diagram of the enlarged structure of part A.

[0023] Among them, 1. transmission shaft, 2. first transmission gear, 3. second transmission gear, 4. reversing wheel body, 41. first reversing surface, 42. second reversing surface, 411. connecting protrusion, 421. connecting groove, 5. support rod, 51. limiting ring, 6. supporting spring. DETAILED DESCRIPTION

[0024] like Figure 1As shown, an inertia synchronizer for an agricultural tractor comprises a transmission shaft 1, on which a first transmission gear 2, a second transmission gear 3 and a reversing wheel are arranged;

[0025] The first transmission gear 2 and the second transmission gear 3 rotate in opposite directions, and the first transmission gear 2 and the second transmission gear 3 are rotatably arranged on the transmission shaft 1 through bearings respectively;

[0026] The reversing wheel is located between the first transmission gear 2 and the second transmission gear 3 , and is configured to be able to move horizontally along the axial direction of the transmission shaft 1 and to be combined with the first transmission gear 2 or the second transmission gear 3 to drive the transmission shaft 1 to rotate.

[0027] like Figure 1-3 In the illustrated embodiment, the reversing wheel comprises a reversing wheel body 4, and a first reversing surface 5 facing the first transmission gear 2 and a second reversing surface 6 facing the second transmission gear 3 located on both sides of the reversing wheel body 4; a connecting protrusion 7 is provided on the outer side of the first reversing surface 5, and the first transmission gear 2 is provided with a connecting groove 8 which is snap-fitted with the connecting protrusion 7; a connecting protrusion 7 is provided on the outer side of the second reversing surface 6, and a connecting groove 8 which is snap-fitted with the connecting protrusion 7 is provided on the outer side of the second connecting gear.

[0028] In another embodiment, the connecting protrusion 7 may also be arranged outside the first transmission gear 2 , and correspondingly, the connecting groove 8 is arranged on the side of the reversing wheel body 4 opposite to the connecting protrusion 7 .

[0029] like Figure 2 and Figure 3 As shown, the connecting protrusion 7 is an arc-shaped protrusion, and the connecting groove 8 is an arc-shaped groove.

[0030] like Figure 2 and Figure 3 As shown, a support rod 9 is slidably connected to the middle of the reversing wheel body 4 , and a connecting protrusion 7 is fixed to the end of the support rod 9 .

[0031] like Figure 2 and Figure 3 As shown, the support rods 9 on both sides of the reversing wheel body 4 are provided with limiting rings 10 , and the outside of the support rods 9 between the limiting rings 10 and the reversing wheel body 4 is provided with supporting springs 11 .

[0032] The reversing wheel body 4 can slide between two limiting rings 10 . The limiting rings 10 can also be in other shapes. The limiting rings 10 are used to limit the support springs 11 .

[0033] The transmission shaft 1 is provided with a fixing pin, and the reversing wheel is provided on the transmission shaft 1 and the fixing pin, and is configured to be able to move horizontally along the length direction of the fixing pin.

[0034] Limiting parts for limiting the horizontal displacement of the reversing wheel are provided at both ends of the fixing pin in the length direction.

[0035] The reversing wheel is driven by a pneumatic system.

[0036] Both ends of the transmission shaft 1 are connected to wheels respectively.

[0037] like Figure 1 As shown, taking left reversing as an example, when the reversing wheel body 4 is subjected to force, the reversing wheel body 4 moves toward the direction of the first transmission gear 2;

[0038] like Figure 2 As shown, the supporting spring 11 on the left side of the reversing wheel body 4 is compressed. When the reversing wheel body 4 continues to move to the left, the support rod 9 and the connecting protrusion 7 are pushed to engage with the connecting groove 8 of the first transmission gear 2 to complete the pre-synchronization action. Further, the gear of the reversing wheel body 4 is meshed with the ring gear of the first transmission gear 2 to complete the gear shift.

[0039] The principle of rightward and leftward commutation is the same.

[0040] When the reversing wheel body 4 moves to the right, the reversing wheel body 4 pushes the connecting protrusion 7 on the right side to engage with the connecting groove 8 of the second transmission gear 3 to complete the pre-synchronization action, and further the gear on the right side of the reversing wheel body 4 engages with the ring gear of the second transmission gear 3 to complete the gear shifting.

[0041] The first transmission gear 2 and the second transmission gear 3 rotate in opposite directions, that is, one of them is a forward gear and the other is a reverse gear.

[0042] Similarly, when the connecting protrusion 7 is located on the outside of the first transmission gear 2 and the second transmission gear 3, when the reversing wheel body 4 is moved by force, the connecting protrusion 7 on the outside of the first transmission gear 2 or the connecting protrusion 7 on the outside of the second transmission gear 3 is inserted into the connecting groove 8 on the side of the reversing wheel body 4 to complete the pre-synchronization action.

[0043] A gearbox comprises the above-mentioned inertia synchronizer for agricultural tractors. A tractor comprises the above-mentioned inertia synchronizer for agricultural tractors.

[0044] The above-mentioned specific implementation is only a specific case of the present utility model. The patent protection scope of the present utility model includes but is not limited to the product form and style of the above-mentioned specific implementation. Any inertia synchronizer for an agricultural tractor that complies with the claims of the present utility model and any appropriate changes or modifications made thereto by ordinary technicians in the corresponding technical field shall fall within the patent protection scope of the present utility model.

Claims

1. An inertia synchronizer for an agricultural tractor, characterized in that: It comprises a transmission shaft (1), on which a first transmission gear (2), a second transmission gear (3) and a reversing wheel are provided; The first transmission gear (2) and the second transmission gear (3) rotate in opposite directions, and the first transmission gear (2) and the second transmission gear (3) are rotatably arranged on the transmission shaft (1) via bearings respectively; The reversing wheel is located between the first transmission gear (2) and the second transmission gear (3), and the reversing wheel is configured to be able to move horizontally along the axial direction of the transmission shaft (1) and to be combined with the first transmission gear (2) or the second transmission gear (3) to drive the transmission shaft (1) to rotate.

2. The inertia synchronizer for an agricultural tractor according to claim 1, characterized in that: The reversing wheel comprises a reversing wheel body (4), and a first reversing surface (41) facing the first transmission gear (2) and a second reversing surface (42) facing the second transmission gear (3) located on both sides of the reversing wheel body (4); one of the first reversing surface (41) and the first transmission gear (2) is provided with a connecting protrusion (411), and the other is provided with a connecting groove (421) engaged with the connecting protrusion (411); one of the second reversing surface (42) and the second transmission gear (3) is provided with a connecting protrusion (411), and the other is provided with a connecting groove (421) engaged with the connecting protrusion (411).

3. The inertia synchronizer for an agricultural tractor according to claim 2, characterized in that: The connecting protrusion (411) is a circular arc-shaped protrusion, and the connecting groove (421) is a circular arc-shaped groove.

4. The inertia synchronizer for an agricultural tractor according to claim 2, characterized in that: The middle part of the reversing wheel body (4) is slidably connected to a support rod (5), and the connecting protrusion (411) is fixed to the end of the support rod (5).

5. The inertia synchronizer for an agricultural tractor according to claim 4, characterized in that: The support rods (5) on both sides of the reversing wheel body (4) are provided with limiting rings (51), and the outside of the support rod (5) between the limiting ring (51) and the reversing wheel body (4) is sleeved with a supporting spring (6).

6. The inertia synchronizer for an agricultural tractor according to claim 1, characterized in that: The transmission shaft (1) is provided with a fixing pin, and the reversing wheel is provided on the transmission shaft (1) and the fixing pin, and is configured to be able to move horizontally along the length direction of the fixing pin.

7. The inertia synchronizer for an agricultural tractor according to claim 6, characterized in that: Limiting parts for limiting the horizontal displacement of the reversing wheel are provided at both ends of the fixing pin in the length direction.

8. The inertia synchronizer for an agricultural tractor according to claim 7, characterized in that: The reversing wheel is driven by a pneumatic system.

9. The inertia synchronizer for an agricultural tractor according to claim 4, characterized in that: Both ends of the transmission shaft (1) are connected to wheels respectively.

10. A tractor, characterized in that: An inertia synchronizer for an agricultural tractor comprising the inertia synchronizer for an agricultural tractor as claimed in any one of claims 1 to 9.

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