Axle with adjustable wheel tread

Abstract

The utility model provides an axle with an adjustable wheel track, which belongs to the technical field of plant protection engineering and is characterized in that a driving rod is arranged between a first frame rod and a second frame rod, and a spline is arranged in the length direction of the driving rod; the first frame rod and the second frame rod are arranged in parallel, and the sliding transmission frame is arranged along the first frame rod and the second frame rod in a sliding mode. The sliding transmission frame comprises a sleeve, a driving bevel gear and a driven bevel gear, the sleeve is connected to the driving rod in a sleeving mode, and the sleeve and the spline are arranged in a matched mode; the driving bevel gear and the sleeve are coaxially and fixedly arranged, the driving bevel gear is meshed with the driven bevel gear, and the driven bevel gear is in transmission connection with a hub; the first frame rod and the second frame rod provide a moving range for hub distance adjustment, and when a large distance is needed, the transmission frame is slid to move towards the far end.

Description

Technical Field

[0001] The utility model relates to the technical field of plant protection engineering machinery, in particular to a vehicle axle with adjustable wheelbase. Background Art

[0002] Plant protection machines are widely used as auxiliary mechanical equipment for sowing, harvesting or daily maintenance of crops. Due to the vast territory of my country and the different angles of sunshine, the sunshine angle in the south is smaller and the crop spacing is smaller, while the sunshine angle in the north is larger and the crop spacing is larger, resulting in different crop spacings in the south and the north. If the plant protection machine is not specially designed, it is easy to crush the seedlings during sowing, harvesting or daily maintenance, which not only fails to save manpower and increase crop yields, but also leads to an increase in the seedling death rate. In order to meet the needs of crop sowing and daily maintenance, and expand the scope of application of plant protection machines, plant protection machines with adjustable wheelbases have been developed. However, in order to achieve adjustable wheelbase, existing plant protection machines generally use two power systems to drive the wheel hubs on both sides to achieve the above functions. The two power systems increase the cost and quality of the plant protection machines, and reduce work efficiency and safety.

[0003] Therefore, there is an urgent need for an axle that can adjust the wheelbase as needed. Utility Model Content

[0004] In view of this, the present invention proposes a method of adjusting the distance between the hubs by using a sliding transmission frame without affecting the transmission of power.

[0005] The technical solution of the utility model is achieved as follows: a wheelbase-adjustable axle includes an active rod, a first frame rod, a second frame rod and a sliding transmission frame, the active rod is arranged between the first frame rod and the second frame rod, and a spline is provided in the length direction of the active rod; the first frame rod and the second frame rod are arranged in parallel, and the sliding transmission frame is slidably arranged along the first frame rod and the second frame rod; the sliding transmission frame includes a sleeve, a driving bevel gear and a driven bevel gear, the sleeve is sleeved on the active rod, and the sleeve is matched with the spline; the driving bevel gear and the sleeve are coaxially fixed, the driving bevel gear is meshed with the driven bevel gear, and the driven bevel gear is transmission-connected to the wheel hub.

[0006] On the basis of the above technical solution, preferably, the sliding transmission frame also includes a main transmission cylinder and a slave transmission cylinder, the main transmission cylinder and the slave transmission cylinder are arranged perpendicular to each other, the sleeve is arranged along the main transmission cylinder, the driving bevel gear is arranged in the main transmission cylinder, and the driven bevel gear is arranged in the slave transmission cylinder.

[0007] On the basis of the above technical solution, preferably, the sliding transmission frame also includes a first fastening plate and a plurality of first connecting rods, one end of the plurality of first connecting rods is fixedly arranged on one side of the transmission cylinder, the first fastening plate and the other end of the plurality of first connecting rods are connected by screws, and the first frame rod or the second frame rod passes between the transmission cylinder and the first fastening plate.

[0008] On the basis of the above technical solution, preferably, the sliding transmission frame also includes a second fastening plate and several second connecting rods, one end of the several second connecting rods is fixedly set on the other side of the transmission cylinder, the second fastening plate and the other ends of the several second connecting rods are connected by screws, and the first frame rod or the second frame rod passes between the transmission cylinder and the second fastening plate.

[0009] Based on the above technical solution, preferably, the lengths of the first connecting rods and the second connecting rods are all smaller than the width of the first rack rod or the second rack rod.

[0010] On the basis of the above technical solution, preferably, it further includes a bridge body and a fixed plate, one end of the first frame rod and the second frame rod are fixedly set on the bridge body, and the other ends of the first frame rod and the second frame rod are fixedly set on the fixed plate.

[0011] On the basis of the above technical solution, preferably, a transmission ball is further included, one end of the active rod extends into the transmission ball, and the other end is rotatably set on the fixed plate.

[0012] On the basis of the above technical solution, preferably,

[0013] The utility model has the following beneficial effects compared with the prior art:

[0014] (1) The first frame rod and the second frame rod provide a range of movement for adjusting the distance between the hubs. When a large distance is required, the sliding transmission frame can be moved to the far end. In order to ensure that the power of the active rod can still be transmitted to the hub during the movement of the sliding transmission frame, a spline and a sleeve that cooperates with the spline are provided on the active rod. During the movement of the sleeve, the active bevel gear provided on the sleeve is driven to move. The active bevel gear transmits power to the driven bevel gear meshing with it, and the driven bevel gear transmits power to the hub. This achieves the goal of adjusting the hub position while ensuring that the power of the active rod is transmitted to the hub.

[0015] (2) The main transmission cylinder and the slave transmission cylinder are arranged perpendicular to each other, the driving bevel gear is arranged in the main transmission cylinder, and the driven bevel gear is arranged in the slave transmission cylinder, so as to twist the power transmission direction of the active rod by 90 degrees.

[0016] (3) When the first fastening plate is fastened to the first connecting rod, the first frame rod or the second frame rod is fixed to the position of the transmission cylinder, so that the wheel hub can be adjusted as needed; when the second fastening plate is fastened to the second connecting rod, the first frame rod or the second frame rod is fixed to the position of the transmission cylinder, so that the wheel hub can be adjusted as needed; in order to be able to fasten the first frame rod or the second frame rod, it is necessary to ensure that the lengths of the first connecting rod and the second connecting rod are both smaller than the width of the first frame rod or the second frame rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 This is a three-dimensional diagram of a vehicle axle with adjustable wheelbase according to the present invention;

[0019] Figure 2 This is a front view of a vehicle axle with adjustable wheelbase according to the present invention;

[0020] Figure 3 This is a partial structural diagram of a vehicle axle with adjustable wheelbase according to the present invention;

[0021] Figure 4 It is a three-dimensional diagram of the sliding transmission frame of the utility model. DETAILED DESCRIPTION

[0022] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] like Figure 1-4As shown, a wheelbase-adjustable axle includes an active rod 3, a first frame rod 1, a second frame rod 2 and a sliding transmission frame 4, wherein the active rod 3 is arranged between the first frame rod 1 and the second frame rod 2, and a spline 31 is provided in the length direction of the active rod 3; the first frame rod 1 and the second frame rod 2 are arranged in parallel, and the sliding transmission frame 4 is slidably arranged along the first frame rod 1 and the second frame rod 2; the sliding transmission frame 4 includes a sleeve 41, a driving bevel gear 42 and a driven bevel gear 43, the sleeve 41 is sleeved on the active rod 3, and the sleeve 41 is matched with the spline 31; the driving bevel gear 42 is coaxially fixed with the sleeve 41, the driving bevel gear 42 is meshed with the driven bevel gear 43, and the driven bevel gear 43 is transmission-connected to the wheel hub 5. The first frame rod 1 and the second frame rod 2 provide a range of movement for adjusting the distance of the wheel hub 5. When a larger distance is required, the sliding transmission frame 4 can be moved to the far end. In order to ensure that the power of the active rod 3 can still be transmitted to the wheel hub 5 during the movement of the sliding transmission frame 4, a spline 31 and a sleeve 41 that cooperates with the spline 31 are provided on the active rod 3. During the movement of the sleeve, the active bevel gear 42 provided on the sleeve 41 is driven to move. The active bevel gear 42 transmits power to the driven bevel gear 43 meshing with it, and the driven bevel gear 43 transmits power to the wheel hub 5. This achieves the adjustment of the position of the wheel hub 5 while ensuring that the power of the active rod 3 is transmitted to the wheel hub 5.

[0024] The sliding transmission frame 4 further includes a main transmission cylinder 44 and a slave transmission cylinder 45. The main transmission cylinder 44 and the slave transmission cylinder 45 are arranged perpendicular to each other. The sleeve 41 is arranged along the main transmission cylinder 44. The driving bevel gear 42 is arranged within the main transmission cylinder 44, and the driven bevel gear 43 is arranged within the slave transmission cylinder 45. The main transmission cylinder 44 and the slave transmission cylinder 45 are arranged perpendicular to each other. The driving bevel gear 42 is arranged within the main transmission cylinder 44, and the driven bevel gear 43 is arranged within the slave transmission cylinder 45, thereby twisting the power transmission direction of the active rod 43 by 90 degrees.

[0025] The sliding transmission frame 4 further includes a first fastening plate 46 and a plurality of first connecting rods 47. One end of each of the first connecting rods 47 is fixedly mounted on one side of the slave transmission cylinder 45. The first fastening plate 46 and the other ends of the first connecting rods 47 are connected by screws. The first frame rod 1 or the second frame rod 2 passes between the slave transmission cylinder 45 and the first fastening plate 46. The fastening of the first fastening plate 46 to the first connecting rod 47 secures the position of the first frame rod 1 or the second frame rod 2 relative to the slave transmission cylinder 45, thereby enabling the wheel hub 5 to be adjusted as needed.

[0026] The sliding transmission frame 4 further includes a second fastening plate 48 and a plurality of second connecting rods 49. One end of each of the plurality of second connecting rods 49 is fixedly mounted on the other side of the slave transmission cylinder 45. The second fastening plate 48 and the other ends of the plurality of second connecting rods 49 are connected by screws. The first frame rod 1 or the second frame rod 2 passes between the slave transmission cylinder 45 and the second fastening plate 48. The second fastening plate 48 is fastened to the second connecting rod 49 to secure the position of the first frame rod 1 or the second frame rod 2 relative to the slave transmission cylinder 45, thereby enabling the wheel hub 5 to be adjusted as needed.

[0027] The lengths of the first connecting rods 47 and the second connecting rods 49 are all smaller than the width of the first rack bar 1 or the second rack bar 2. In order to achieve the fastening of the first rack bar 1 or the second rack bar 2, it is necessary to ensure that the lengths of the first connecting rods 47 and the second connecting rods 49 are all smaller than the width of the first rack bar 1 or the second rack bar 2.

[0028] The bridge body 6 and the fixing plate 7 are further included. One end of each of the first and second rods 1 and 2 is fixedly mounted on the bridge body 6, and the other ends of each of the first and second rods 1 and 2 is fixedly mounted on the fixing plate 7. Since the hubs 5 are symmetrically arranged, with one hub 5 on one side of the bridge body 6 and another hub 5 on the other side, the first and second rods 1 and 2 are mounted on both sides of the bridge body 6.

[0029] It also includes a transmission ball 8, one end of the active rod 3 extends into the transmission ball 8, and the other end is rotatably mounted on the fixed plate 7. The transmission ball 8 receives external power and divides the power into two parts, one part is transmitted to one of the hubs 5, and the other part is transmitted to the other hub.

[0030] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A wheelbase-adjustable axle, comprising an active rod (3), characterized in that: It also includes a first frame rod (1), a second frame rod (2) and a sliding transmission frame (4); the active rod (3) is arranged between the first frame rod (1) and the second frame rod (2); a spline (31) is provided on the active rod (3) in the length direction; the first frame rod (1) and the second frame rod (2) are arranged in parallel, and the sliding transmission frame (4) is slidably arranged along the first frame rod (1) and the second frame rod (2); The sliding transmission frame (4) comprises a sleeve (41), a driving bevel gear (42) and a driven bevel gear (43); the sleeve (41) is sleeved on the driving rod (3), and the sleeve (41) is arranged in cooperation with the spline (31); the driving bevel gear (42) and the sleeve (41) are coaxially fixedly arranged, the driving bevel gear (42) is meshed with the driven bevel gear (43), and the driven bevel gear (43) is transmission-connected to the wheel hub (5).

2. The wheelbase-adjustable axle according to claim 1, characterized in that: The sliding transmission frame (4) further comprises a main transmission cylinder (44) and a slave transmission cylinder (45), wherein the main transmission cylinder (44) and the slave transmission cylinder (45) are arranged perpendicular to each other, the sleeve (41) is arranged along the main transmission cylinder (44), the driving bevel gear (42) is arranged in the main transmission cylinder (44), and the driven bevel gear (43) is arranged in the slave transmission cylinder (45).

3. The wheelbase-adjustable axle according to claim 2, wherein: The sliding transmission frame (4) further comprises a first fastening plate (46) and a plurality of first connecting rods (47), one end of each of the plurality of first connecting rods (47) being fixedly arranged on one side of the transmission cylinder (45), the first fastening plate (46) and the other ends of the plurality of first connecting rods (47) being connected by screws, and the first frame rod (1) or the second frame rod (2) passing between the transmission cylinder (45) and the first fastening plate (46).

4. The wheelbase-adjustable axle according to claim 3, characterized in that: The sliding transmission frame (4) further comprises a second fastening plate (48) and a plurality of second connecting rods (49), one end of each of the plurality of second connecting rods (49) being fixedly arranged on the other side of the transmission cylinder (45), the second fastening plate (48) and the other ends of the plurality of second connecting rods (49) being connected by screws, and the first frame rod (1) or the second frame rod (2) passing between the transmission cylinder (45) and the second fastening plate (48).

5. The wheelbase-adjustable axle according to claim 4, characterized in that: The lengths of the first connecting rods (47) and the second connecting rods (49) are all smaller than the width of the first rack rod (1) or the second rack rod (2).

6. The wheelbase-adjustable axle according to claim 1, characterized in that: It also includes a bridge body (6) and a fixing plate (7), wherein one end of the first frame rod (1) and the second frame rod (2) are both fixedly arranged on the bridge body (6), and the other ends of the first frame rod (1) and the second frame rod (2) are both fixedly arranged on the fixing plate (7).

7. The wheelbase-adjustable axle according to claim 6, characterized in that: It also includes a transmission ball (8), one end of the active rod (3) extends into the transmission ball (8), and the other end is rotatably arranged on the fixed plate (7).

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