Positioning device for connecting chassis and axle assembly of harvesting machine

Abstract

A positioning device for connection of a chassis and an axle assembly of a harvesting machine belongs to the field of agricultural machinery, and is convenient for steering an axle body through a hydraulic steering rod, realizes placement of a chassis body through a fixing plate at the top of the axle body, and realizes fixation of the fixing plate and a fixing side plate through a first bolt and a first nut. The fixing side plate and the positioning plate are fixed through a second bolt and a second nut, the chassis body is fixed through the fixing plate, the fixing side plate and the positioning plate, the chassis body is limited and fixed through a positioning pin and a positioning hole, the axial force borne by the chassis body is reduced through a clamping ring and a third nut, and therefore the chassis body can be fixed conveniently. Therefore, the influence of shearing force on the positioning pin is reduced, the phenomenon of loosening of the positioning pin is reduced, and tests prove that the positioning device is compact in structure, convenient to install, accurate in positioning, safe and reliable.

Description

Technical Field

[0001] The utility model belongs to the field of agricultural machinery and relates to a positioning device used for connecting a harvesting machinery chassis and an axle assembly. Background Art

[0002] Harvesters are a crucial component of my country's agricultural machinery sector. For harvester manufacturers, the connection and installation of the chassis and axles are crucial. To ensure proper assembly of the chassis and axle components, the common practice is to machine locating holes in the harvester chassis and axle housing. Operators manually drive locating pins into the corresponding locating holes from top to bottom. During the driving process, the center axis of the locating pin must align with the axis of the locating hole. If the operator's force direction deviates from the axial direction of the locating pin, or if the locating pin's axis deviates from the axis of the locating hole, the locating pin will tilt and bend under stress, and the locating hole will also be easily damaged. In manual operation, if the force direction deviates, both the locating hole and the locating pin will be damaged, resulting in inaccurate positioning or loose locating pins. Because the chassis tends to rock relative to the axle during operation, loose locating pins are subject to significant shear forces during this motion, which can easily cause the locating pins to break, potentially damaging the entire machine.

[0003] In the prior art, there are many ways to install and connect the chassis and axles of harvesting machinery: First, direct connection: the chassis of the harvesting machinery and the beam of the rear axle are directly installed and connected by bolts; second, the chassis of the harvesting machinery is installed and connected to the rear axle half-axle and half-shell; third, the chassis of the harvesting machinery is installed and connected through a connecting device. These installation and connection methods in the prior art each have their own advantages and disadvantages. Although the direct installation and connection between the chassis and the axle ensures the firmness of the connection, the rigidity is relatively poor; the chassis is installed and connected through the rear axle half-axle and half-shell, which has good centering performance and load-bearing capacity, and can ensure the smooth transmission of power, but the structure is relatively complex and the number of parts is large; the chassis is installed and connected through a connecting device, and the chassis ground pressure is relatively low, has certain adaptability to complex terrains such as mountains, and has strong adhesion. The above-mentioned installation and connection methods are still lacking in the positioning problem.

[0004] The utility model patent authorized by the State Intellectual Property Office on April 15, 2022, has application number: 2021230167273, announcement number: CN 216301306 U, and application date: 2021.12.03. This patent application discloses "an axle installation positioning auxiliary device", including: a base plate; a mounting plate, the mounting plate is arranged above the base plate, and a first groove is provided on the mounting plate; a first bearing, the outer periphery of the first bearing is fixedly mounted on the inner wall of the first groove; a rotating shaft, the rotating shaft is fixedly mounted on the inner periphery of the first bearing; a support plate, the support plate is fixedly mounted on the top of the rotating shaft, and a plurality of slots are provided at the bottom end of the support plate, and the plurality of slots are distributed in a ring shape. The axle installation positioning auxiliary device provided by this utility model can fix and move the axle, etc., and solves the positioning problem to a certain extent.

[0005] The utility model patent authorized by the State Intellectual Property Office on September 9, 2015, application number: 2015200156062, announcement number: CN 204623037 U, application date: 2015.01.09. The patent application discloses a "positioning structure for a vehicle chassis and axle assembly and a combine harvester", comprising: an inverted U-shaped mounting seat, having side legs connected to the upper surface of the bridge housing of the axle assembly and a flat top wall with a mounting seat positioning hole; a chassis mounting portion fixedly connected to the chassis and provided with a chassis positioning hole; a positioning bolt, having a bolt head arranged in sequence, a first bolt section suitable for interference fit with the mounting seat positioning hole, a second bolt section suitable for interference fit with the chassis positioning hole, and a threaded section, the positioning bolt passes through the mounting seat positioning hole and the chassis positioning hole from bottom to top, and before being subjected to the interference fit friction resistance of the mounting seat positioning hole or the chassis positioning hole, at least a portion of the threaded section has passed through the chassis positioning hole; and a locking nut, which is used to threadably engage with the threaded section from above the chassis mounting portion, thereby solving the positioning problem to a certain extent.

[0006] Based on the above situation, through research on the current harvesting machinery market and analysis of existing technologies, after design and testing, it is absolutely necessary to develop a positioning device for connecting the chassis and axles of harvesting machinery with a more compact structure, easy installation and precise positioning. Utility Model Content

[0007] The purpose of the utility model is to provide a positioning device for connecting a harvesting machine chassis and an axle assembly, which has a compact structure, is easy to install and has precise positioning.

[0008] The utility model can achieve the above-mentioned purpose through the following technical solutions: A positioning device for connecting the chassis and axle assembly of a harvesting machinery, comprising: an axle body, a hydraulic oil tank, a hydraulic steering rod, an oil nozzle, a flange interface, a fixing plate, a fixed side plate, a first bolt, a first nut, a chassis body, a positioning hole, a positioning pin, a positioning plate, a second bolt, a second nut, a retaining ring, and a third nut; the front side wall of the axle body is fixedly installed with a hydraulic oil tank, and one side wall of the hydraulic oil tank is fixedly installed with a hydraulic steering rod, the free end of the hydraulic steering rod is rotatably installed with the top of the axle body, the front side wall of the hydraulic oil tank is fixedly installed with an oil nozzle, the front side wall of the hydraulic oil tank is provided with a flange interface, and the top of the axle body is fixedly installed with a fixing plate, A fixed side plate is provided at the top of the fixing plate, and a first bolt is fixedly installed at the bottom of the fixing plate, and a first nut is threadedly installed at the free end of the first bolt. A chassis body is provided at the top of the fixing plate, and positioning holes are provided in the chassis body and the front side wall of the fixing side plate, and a positioning pin is fixedly installed in the positioning hole. A positioning plate is provided at the top of the fixing side plate, and a second bolt is fixedly installed at the top of the positioning plate, and a second nut is threadedly installed at the free end of the second bolt. A retaining ring is provided at the top of the chassis body, and the free end of the retaining ring longitudinally passes through the top of the fixing plate and extends to the outside of the fixing plate, and a third nut is threadedly installed at the free end of the retaining ring.

[0009] There are four groups of hydraulic steering rods, which are arranged in a rectangular array.

[0010] There are two groups of oil nozzles, which are symmetrically arranged.

[0011] The fixing plate and the fixing side plate are provided with through holes that match each other. The through holes on the fixing plate and the fixing side plate match the first bolts and are fixedly installed by the first bolts and the first nuts.

[0012] There are two groups of fixed side panels, and the rear side walls of the fixed side panels are arc-shaped and match the chassis body.

[0013] The fixed side plate and the positioning plate are fixedly installed by means of second bolts and second nuts.

[0014] The clamping ring is U-shaped, and the top of the clamping ring fits with the top of the chassis body.

[0015] The beneficial effects achieved by the utility model after adopting the above technical scheme are as follows: the positioning device for connecting the chassis and the axle assembly of the harvesting machinery facilitates the steering of the axle body through the hydraulic steering rod, the chassis body is placed through the fixed plate on the top of the axle body, the fixed plate and the fixed side plate are fixed by the first bolt and the first nut, the fixed side plate and the positioning plate are fixed by the second bolt and the second nut, the chassis body is fixed by the fixed plate, the fixed side plate and the positioning plate, the chassis body is limited and fixed by the positioning pin and the positioning hole, the axial force on the chassis body is reduced by the retaining ring and the third nut, thereby reducing the shear force on the positioning pin, and further reducing the loosening of the positioning pin. Experiments have shown that the positioning device has a compact structure, is easy to install, and has precise positioning. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the main structure of a positioning device for connecting a harvesting machine chassis and an axle assembly according to the present invention;

[0017] Figure 2 for Figure 1 Schematic diagram of the enlarged structure of part A;

[0018] Figure 3 for Figure 1 3D schematic diagram of the partial structure of site A.

[0019] In the figure: 1 axle body, 2 hydraulic oil tank, 3 hydraulic steering rod, 4 oil nozzle, 5 flange interface, 6 fixing plate, 7 fixing side plate, 8 first bolt, 9 first nut, 10 chassis body, 11 positioning hole, 12 positioning pin, 13 positioning plate, 14 second bolt, 15 second nut, 16 retaining ring, 17 third nut. DETAILED DESCRIPTION

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1-3As shown, a positioning device for connecting the chassis and axle assembly of a harvesting machine includes: an axle body 1, a hydraulic oil tank 2, a hydraulic steering rod 3, an oil nozzle 4, a flange interface 5, a fixing plate 6, a fixing side plate 7, a first bolt 8, a first nut 9, a chassis body 10, a positioning hole 11, a positioning pin 12, a positioning plate 13, a second bolt 14, a second nut 15, a retaining ring 16, and a third nut 17. In this embodiment, the hydraulic oil tank 2 is fixedly mounted on the front side wall of the axle body 1, and a hydraulic steering rod 3 is fixedly mounted on one side wall of the hydraulic oil tank 2. The free end of the hydraulic steering rod 3 is rotatably mounted on the top of the axle body 1. There are four groups of hydraulic steering rods 3, and they are all arranged in a rectangular array; the front side wall of the hydraulic oil tank 2 is welded with an oil nozzle 4, and there are two groups of oil nozzles 4, and the two groups of oil nozzles 4 are symmetrically arranged; the front side wall of the hydraulic oil tank 2 is provided with a flange interface 5, and a fixing plate 6 is welded on the top of the axle body 1, and a fixing side plate 7 is placed on the top of the fixing plate 6. The fixing plate 6 and the fixing side plate 7 are provided with through holes that match each other, and a first bolt 8 is fixedly mounted on the bottom of the fixing plate 6, and a first nut 9 is threadedly mounted on the free end of the first bolt 8. The through holes on the fixing plate 6 and the fixed side plate 7 match the first bolt 8, and are fixed by the first bolt 8 and the first nut 9 Fixed installation; a chassis body 10 is placed on the top of the fixing plate 6, and there are two groups of fixed side plates 7, and the rear side wall of the fixed side plate 7 is arc-shaped and matches the chassis body 10. A positioning hole 11 is provided on the front side wall of the chassis body 10 and the fixed side plate 7, and a positioning pin 12 is fixedly installed in the positioning hole 11. A positioning plate 13 is placed on the top of the fixed side plate 7, and a second bolt 14 is fixedly installed on the top of the positioning plate 13. The free end of the second bolt 14 is threadedly installed with a second nut 15. The fixed side plate 7 and the positioning plate 13 are fixedly installed by the second bolt 14 and the second nut 15. A snap ring 16 is placed on the top of the chassis body 10, and the snap ring 16 is U-shaped, and the top of the snap ring 16 fits with the top of the chassis body 10. The free end of the snap ring 16 longitudinally passes through the top of the fixing plate 6 and extends to the outside of the fixing plate 6. The free end of the snap ring 16 is threadedly installed with a third nut 17.

[0021] During use: the hydraulic steering rod 3 is used to facilitate steering the axle body 1, the chassis body 10 is placed through the fixed plate 6 on the top of the axle body 1, the fixed plate 6 and the fixed side plate 7 are fixed by the first bolt 8 and the first nut 9, and the fixed side plate 7 and the positioning plate 13 are fixed by the second bolt 14 and the second nut 15; the chassis body 10 is fixed by the fixed plate 6, the fixed side plate 7 and the positioning plate 13, and the chassis body 10 is limited and fixed by the locating pin 12 and the locating hole 11, and the axial force on the chassis body 10 is reduced by the retaining ring 16 and the third nut 17, thereby reducing the influence of the shear force on the locating pin 12, and further reducing the loosening of the locating pin 12.

[0022] To sum up, the positioning device for connecting the chassis and axle assembly of the harvesting machinery facilitates the steering of the axle body 1 through the hydraulic steering rod 3, and the chassis body 10 is placed through the fixed plate 6 on the top of the axle body 1, and the fixing of the fixed plate 6 and the fixed side plate 7 is achieved by the first bolt 8 and the first nut 9. The fixing between the fixed side plate 7 and the positioning plate 13 is achieved by the second bolt 14 and the second nut 15. The chassis body 10 is fixed by the fixed plate 6, the fixed side plate 7 and the positioning plate 13, and the chassis body 10 is limited and fixed by the locating pin 12 and the locating hole 11. The axial force on the chassis body 10 is reduced by the retaining ring 16 and the third nut 17, thereby reducing the shear force on the locating pin 12 and thus reducing the loosening of the locating pin 12, thereby solving the problems of positioning and fixing of the harvesting machinery chassis and axle assembly and loosening of the locating pin.

[0023] The practical application of the present invention is not limited to the situation described in this example. All technical solutions and improvements that do not deviate from the essential content of the present invention should fall within the scope of the claims of the present invention.

Claims

1. A positioning device for connecting a harvesting machine chassis and an axle assembly, comprising: Axle body (1), hydraulic oil tank (2), hydraulic steering rod (3), oil nozzle (4), flange interface (5), fixed plate (6), fixed side plate (7), first bolt (8), first nut (9), chassis body (10), positioning hole (11), positioning pin (12), positioning plate (13), second bolt (14), second nut (15), snap ring (16), third nut (17); characterized in that: the front side wall of the axle body (1) is fixedly mounted with the hydraulic oil tank (2), one side wall of the hydraulic oil tank (2) is fixedly mounted with the hydraulic steering rod (3), the free end of the hydraulic steering rod (3) and the top of the axle body (1) are rotatably mounted, the front side wall of the hydraulic oil tank (2) is fixedly mounted with the oil nozzle (4), the front side wall of the hydraulic oil tank (2) is fixedly mounted with the flange interface (5), the top of the axle body (1) is fixedly mounted with the fixed plate (6), the fixed plate (6) A fixed side plate (7) is provided at the top of the fixing plate (6), a first bolt (8) is fixedly installed at the bottom of the fixing plate (6), and a first nut (9) is threadedly installed at the free end of the first bolt (8), a chassis body (10) is provided at the top of the fixing plate (6), a positioning hole (11) is opened on the front side wall of the chassis body (10) and the fixing side plate (7), a positioning pin (12) is fixedly installed in the positioning hole (11), a positioning plate (13) is provided at the top of the fixing side plate (7), a second bolt (14) is fixedly installed at the top of the positioning plate (13), and a second nut (15) is threadedly installed at the free end of the second bolt (14), a snap ring (16) is provided at the top of the chassis body (10), the free end of the snap ring (16) longitudinally passes through the top of the fixing plate (6) and extends to the outside of the fixing plate (6), and a third nut (17) is threadedly installed at the free end of the snap ring (16).

2. The positioning device for connecting a harvesting machine chassis and an axle assembly according to claim 1, characterized in that: The hydraulic steering rods (3) are arranged in four groups in a rectangular array.

3. The positioning device for connecting a harvesting machine chassis and an axle assembly according to claim 1, characterized in that: The oil nozzles (4) are provided in two groups and are symmetrically arranged.

4. The positioning device for connecting a harvesting machine chassis and an axle assembly according to claim 1, characterized in that: The fixed plate (6) and the fixed side plate (7) are provided with through holes that match each other. The through holes on the fixed plate (6) and the fixed side plate (7) match the first bolt (8) and are fixedly installed by the first bolt (8) and the first nut (9).

5. The positioning device for connecting a harvesting machine chassis and an axle assembly according to claim 1, characterized in that: There are two groups of fixed side panels (7), and the rear side walls of the fixed side panels (7) are arc-shaped and match the chassis body (10).

6. The positioning device for connecting a harvesting machine chassis and an axle assembly according to claim 1, characterized in that: The fixed side plate (7) and the positioning plate (13) are fixedly mounted via a second bolt (14) and a second nut (15).

7. The positioning device for connecting a harvesting machine chassis and an axle assembly according to claim 1, characterized in that: The snap ring (16) is U-shaped, and the top of the snap ring (16) fits into the top of the chassis body (10).

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