Power output tail end assembly of agricultural mechanical transmission system

Abstract

The utility model provides a power output tail end assembly of an agricultural machinery transmission system, and belongs to the technical field of agricultural machinery. The driving bevel gear and the driven bevel gear are meshed in the shell, the driving wheel shaft is in transmission connection with the driven bevel gear, the supporting and fixing frame is fixedly arranged in the shell, and the driven bevel gear and the driving wheel shaft are rotationally arranged on the supporting and fixing frame; the supporting fixing frame fixes the driven bevel gear and the driving wheel shaft, impact force and friction force between the driving bevel gear and the driven bevel gear are reduced, the effect of protecting the driving bevel gear and the driven bevel gear is achieved, and the driving wheel shaft is prevented from shaking in the axial direction of the driving wheel shaft under the action of axial force. The transmission efficiency is reduced and the driving bevel gear and the driven bevel gear are damaged due to incomplete meshing of the driving bevel gear and the driven bevel gear.

Description

Technical Field

[0001] The utility model relates to the technical field of agricultural machinery, in particular to a power output terminal assembly of an agricultural machinery transmission system. Background Art

[0002] The existing middle bridge leg assembly rotates the power transmission direction by 90° through the bevel gear and transmits it to the wheel hub. The inner spline processed in the center of the driving passive bevel gear is plugged with the outer spline processed on the drive shaft, thereby transmitting the power to the driving wheel shaft. The driving wheel shaft and the deep groove ball bearing are assembled to the center of the end shell and the end cover, and the power is transmitted to the wheel installed on the wheel hub to achieve forward and backward movement. The driving wheel shaft needs to transmit power, and it is also necessary to prevent the driving wheel shaft from axial shaking or even falling out of the end shell. The existing technology generally processes a slot on the outside of the driving wheel shaft and the passive bevel gear, and positions and sets it on the outside of the driving passive bevel gear through the semicircular lock plate and the lock plate fixing sleeve installed on the slot. When the axial force of the driving wheel shaft is generated, one side of the semicircular lock plate presses on the passive bevel gear. The active bevel gear presses the axial force to the deep groove ball bearing. The deep groove ball bearing presses the force to the bearing shoulder reserved in the inner hole of the end cover, so that the driving shaft cannot fall out. The disadvantage of this structure is that the passive bevel gear bears the torque transmitted by the active bevel gear while also bearing the axial force generated by the active bevel gear on the driving wheel shaft, which increases the impact force and friction between the active bevel gear and the passive bevel gear, making it easy to break or damage.

[0003] Therefore, there is an urgent need for a middle bridge leg assembly that can better limit the axial movement of the driving wheel shaft and reduce the impact force and friction force of the active bevel gear and the passive bevel gear. Utility Model Content

[0004] In view of this, the utility model utilizes a supporting fixing frame to fix the driving wheel shaft, thereby reducing the impact and friction between the active bevel gear and the passive bevel gear, and improving the power transmission efficiency and reliability.

[0005] The technical solution of the utility model is implemented as follows: a power output terminal assembly of an agricultural machinery transmission system includes a housing, an active bevel gear, a passive bevel gear, and a driving wheel shaft. The active bevel gear and the passive bevel gear are meshed in the housing, and the driving wheel shaft is transmission-connected with the passive bevel gear. It also includes a supporting and fixing frame, which is fixedly arranged in the housing, and the passive bevel gear and the driving wheel shaft are rotatably arranged on the supporting and fixing frame.

[0006] On the basis of the above technical solution, preferably, the passive bevel gear comprises a gear plate and a transmission sleeve, the gear plate is fixedly arranged on the transmission sleeve, and one end of the driving wheel shaft is transmission-arranged in the transmission sleeve.

[0007] On the basis of the above technical solution, preferably, the supporting fixing frame includes a first deep groove bearing and a second deep groove bearing, the outer rings of the first deep groove bearing and the second deep groove bearing are fixedly arranged on the housing, and the inner rings of the first deep groove bearing and the second deep groove bearing are fixedly arranged on the transmission sleeve.

[0008] On the basis of the above technical solution, preferably, the first deep groove bearing is arranged on one side of the gear plate, and the second deep groove bearing is arranged on the other side of the gear plate.

[0009] On the basis of the above technical solution, preferably, the supporting fixing frame also includes a first tapered roller bearing and a second tapered roller bearing, the outer rings of the first tapered roller bearing and the second tapered roller bearing are fixedly arranged on the housing, and the inner rings of the first tapered roller bearing and the second tapered roller bearing are fixedly arranged on the driving wheel shaft.

[0010] On the basis of the above technical solution, preferably, the first tapered roller bearing and the second tapered roller bearing are arranged in mirror symmetry.

[0011] On the basis of the above technical solution, preferably, the support fixing frame also includes a first locking nut and a second locking nut, the first locking nut and the second locking nut are arranged on the driving wheel shaft through threads, and the second locking nut is arranged close to the first tapered roller bearing.

[0012] On the basis of the above technical solution, preferably, the support fixing frame further includes an anti-loosening plate, and the anti-loosening plate is arranged between the first locking nut and the second locking nut.

[0013] On the basis of the above technical solution, preferably, one end of the driving axle away from the passive bevel gear extends out of the housing, and the end of the driving axle extending out of the housing is drivingly connected to a hub.

[0014] On the basis of the above technical solution, preferably, an oil seal is further provided on the housing, and the oil seal is arranged around the driving wheel shaft.

[0015] The utility model has the following beneficial effects compared with the prior art:

[0016] (1) The support bracket fixes the passive bevel gear and the driving wheel shaft, reduces the impact force and friction between the active bevel gear and the passive bevel gear, and protects the active bevel gear and the passive bevel gear, thereby preventing the driving wheel shaft from shaking along the axial direction of the driving wheel shaft under the action of the axial force, causing incomplete meshing of the active bevel gear and the passive bevel gear, resulting in reduced transmission efficiency and damage to the active bevel gear and the passive bevel gear;

[0017] (2) The outer rings of the first deep groove bearing and the second deep groove bearing are fixedly arranged on the housing, and the inner rings are fixedly arranged on the transmission sleeve. At this time, it is equivalent to fixing the driven bevel gear by using the first deep groove bearing and the second deep groove bearing. The driven bevel gear can only rotate with the power transmitted from the driving bevel gear and cannot move axially along the drive wheel shaft. At this time, the meshing effect between the driving bevel gear and the driven bevel gear is better, the transmission efficiency is higher, and there will be no impact between the driving bevel gear and the driven bevel gear due to the shaking of the driven bevel gear, protecting the driving bevel gear and the driven bevel gear. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0019] Figure 1 is a perspective view of the power output end assembly of an agricultural machinery transmission system of the present invention;

[0020] Figure 2 for the present invention Figure 1 is a top view;

[0021] Figure 3 for the present invention Figure 1 is a sectional view. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] The following will combine the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0023] Such as Figures 1-3As shown in the figure, a power output end assembly of an agricultural machinery transmission system includes a housing 1, a driving bevel gear 2, a driven bevel gear 3, and a driving wheel shaft 4. The driving bevel gear 2 and the driven bevel gear 3 are engaged within the housing 1, and the driving wheel shaft 4 is in transmission connection with the driven bevel gear 3. It further includes a support fixing frame 5. The support fixing frame 5 is fixedly arranged within the housing 1, and the driven bevel gear 3 and the driving wheel shaft 4 are rotatably arranged on the support fixing frame 5. The support fixing frame 5 fixes the driven bevel gear 3 and the driving wheel shaft 4, reducing the impact force and frictional force between the driving bevel gear 2 and the driven bevel gear 3, achieving the effect of protecting the driving bevel gear 2 and the driven bevel gear 3, and avoiding the axial sway of the driving wheel shaft 4 along the axis of the driving wheel shaft 4 under the action of the axial force, which may cause incomplete meshing between the driving bevel gear 2 and the driven bevel gear 3, resulting in reduced transmission efficiency and damage to the driving bevel gear 2 and the driven bevel gear 3.

[0024] The driven bevel gear 3 includes a gear disc 31 and a transmission sleeve 32. The gear disc 31 is fixedly arranged on the transmission sleeve 32, and one end of the driving wheel shaft 4 is in transmission arrangement within the transmission sleeve 32. The driven bevel gear 3 includes a gear disc 31 and a transmission sleeve 32. The gear disc 31 meshes with the driving bevel gear 2 to transmit power, and the transmission sleeve 32 transmits power to the driving wheel shaft 4. Power can be transmitted through splines or by welding. The structure is simple and the reliability is strong.

[0025] The support fixing frame 5 includes a first deep groove ball bearing 51 and a second deep groove ball bearing 52. The outer rings of the first deep groove ball bearing 51 and the second deep groove ball bearing 52 are fixedly arranged on the housing 1, and the inner rings of the first deep groove ball bearing 51 and the second deep groove ball bearing 52 are fixedly arranged on the transmission sleeve 32. The outer rings of the first deep groove ball bearing 51 and the second deep groove ball bearing 52 are fixedly arranged on the housing 1, and the inner rings are fixedly arranged on the transmission sleeve 32. At this time, it is equivalent to using the first deep groove ball bearing 51 and the second deep groove ball bearing 52 to fix the driven bevel gear 3. The driven bevel gear 3 can only rotate with the power transmitted from the driving bevel gear 2 to the driven bevel gear 3 and cannot move axially along the driving wheel shaft 4. At this time, the meshing effect between the driving bevel gear 2 and the driven bevel gear 3 is better, the transmission efficiency is higher, and there will be no impact between the driving bevel gear 2 and the driven bevel gear 3 due to the sway of the driven bevel gear 3, protecting the driving bevel gear 2 and the driven bevel gear 3.

[0026] The first deep groove ball bearing 51 is arranged on one side of the gear disc 31, and the second deep groove ball bearing 52 is arranged on the other side of the gear disc 31. The first deep groove ball bearing 51 is arranged on one side of the gear disc 31, and the second deep groove ball bearing 52 is arranged on the other side of the gear disc 31. The first deep groove ball bearing 51 and the second deep groove ball bearing 52 fix the driven bevel gear 3 more stably, and the force on the driven bevel gear 3 is more uniform and stable.

[0027] The support bracket 5 further includes a first tapered roller bearing 53 and a second tapered roller bearing 54, wherein the outer rings of the first tapered roller bearing 53 and the second tapered roller bearing 54 are fixedly arranged on the housing 1, and the inner rings of the first tapered roller bearing 53 and the second tapered roller bearing 54 are fixedly arranged on the driving wheel shaft 4. The first tapered roller bearing 53 and the second tapered roller bearing 54 restrict the driving wheel shaft 4 from coming out of the housing 1, which may cause a safety accident.

[0028] The first tapered roller bearing 53 and the second tapered roller bearing 54 are arranged in mirror symmetry. At this time, the forces applied by the first tapered roller bearing 53 and the second tapered roller bearing 54 to the driving wheel shaft 4 are all along the driving wheel shaft 4, and the external forces applied by the first tapered roller bearing 53 and the second tapered roller bearing 54 are applied in opposite directions, and the external forces cancel each other out, thereby preventing the driving wheel shaft 4 from moving along its own axial direction in the housing 1.

[0029] The support fixing frame 5 further includes a first locking nut 55 and a second locking nut 57, the first locking nut 55 and the second locking nut 57 are arranged on the driving wheel shaft 4 through threads, and the second locking nut 57 is arranged close to the first tapered roller bearing 53. The second locking nut 57 is arranged close to the first tapered roller bearing 53 to limit the position of the first tapered roller bearing 53. Since the second locking nut 57 is arranged on the driving wheel shaft 4 through threads, the position of the second locking nut 57 can be adjusted as needed.

[0030] The support fixing frame 5 further includes an anti-loosening sheet 56, which is disposed between the first locking nut 55 and the second locking nut 57. The first locking nut 55 is used to fix the position of the anti-loosening sheet 56, and the position of the second locking nut 57 is fixed by the loosening sheet 56, so as to avoid the position of the second locking nut 57 changing during use, thereby preventing the second locking nut 57 from losing its limiting effect on the first tapered roller bearing 53, thereby improving the reliability of the entire device.

[0031] The end of the driving axle 4 away from the passive bevel gear 3 extends out of the housing 1, and the end of the driving axle 4 extending out of the housing 1 is drivingly connected to a hub 41. The housing 1 is also provided with an oil seal 11, which is arranged around the driving axle 4.

[0032] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A power output end assembly of an agricultural machinery transmission system, comprising a housing (1), a driving bevel gear (2), a driven bevel gear (3), and a driving wheel shaft (4). The driving bevel gear (2) and the driven bevel gear (3) are meshed within the housing (1), and the driving wheel shaft (4) is in transmission connection with the driven bevel gear (3). It is characterized in that: It further includes a support fixing frame (5), the support fixing frame (5) is fixedly arranged inside the housing (1), and the driven bevel gear (3) and the driving wheel shaft (4) are rotatably arranged on the support fixing frame (5); the driven bevel gear (3) includes a gear disk (31) and a transmission sleeve (32), the gear disk (31) is fixedly arranged on the transmission sleeve (32), and one end of the driving wheel shaft (4) is transmissionally arranged inside the transmission sleeve (32); the support fixing frame (5) includes a first deep groove ball bearing (51) and a second deep groove ball bearing (52), the outer rings of the first deep groove ball bearing (51) and the second deep groove ball bearing (52) are fixedly arranged on the housing (1), and the inner rings of the first deep groove ball bearing (51) and the second deep groove ball bearing (52) are fixedly arranged on the transmission sleeve (32); the first deep groove ball bearing (51) is arranged on one side of the gear disk (31), and the second deep groove ball bearing (52) is arranged on the other side of the gear disk (31).

2. The power output end assembly of an agricultural machinery transmission system according to claim 1, characterized in that: The support fixing frame (5) further includes a first tapered roller bearing (53) and a second tapered roller bearing (54), the outer rings of the first tapered roller bearing (53) and the second tapered roller bearing (54) are fixedly arranged on the housing (1), and the inner rings of the first tapered roller bearing (53) and the second tapered roller bearing (54) are fixedly arranged on the driving wheel shaft (4).

3. The power output end assembly of an agricultural machinery transmission system according to claim 2, characterized in that: The first tapered roller bearing (53) and the second tapered roller bearing (54) are arranged in mirror symmetry.

4. The output end assembly according to claim 2, wherein: The support fixing frame (5) further includes a first locking nut (55) and a second locking nut (57), the first locking nut (55) and the second locking nut (57) are arranged on the driving wheel shaft (4) through threads, and the second locking nut (57) is closely arranged against the first tapered roller bearing (53).

5. The power output end assembly of an agricultural machinery transmission system according to claim 4, characterized in that: The support fixing frame (5) further includes a lock washer (56), and the lock washer (56) is arranged between the first locking nut (55) and the second locking nut (57).

6. The power output end assembly of an agricultural machinery transmission system according to claim 1, characterized in that: One end of the driving wheel shaft (4) far from the driven bevel gear (3) extends out of the housing (1), and a hub (41) is transmissionally connected to the end of the driving wheel shaft (4) extending out of the housing (1).

7. The power output end assembly of an agricultural machinery transmission system according to claim 6, characterized in that: An oil seal (11) is further arranged on the housing (1), and the oil seal (11) is arranged around the driving wheel shaft (4).

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