Corn stem pulling roller set

Abstract

The utility model discloses a corn stem pulling roller set which comprises a pair of stem pulling rollers arranged in parallel, and each stem pulling roller sequentially comprises a stem pulling roller body, a hollow guide conical head fixedly connected with the stem pulling roller body, a rotating base rotationally connected with the guide conical head and a fixing shaft used for being installed on a corn harvester from back to front. The whole outer surface of the guide cone head is in a circular truncated cone shape. The front end of the rotating seat is detachably connected with the fixing shaft, a shoulder with the diameter larger than the inner diameter of the guide cone head is arranged in the middle of the rotating seat, and the rear end of the rotating seat extends into the guide cone head and is rotationally supported by the guide cone head. According to the utility model, the front end of the stem pulling roller is arranged on the corn harvester through the rotating seat and the fixed shaft. According to a traditional stem pulling roller, only a power end is fixed to a corn harvester due to rotation requirements, so that a guide conical head which is firstly in contact with crops is lack of support, and structural damage is caused by accumulation. The guide cone head solves the technical problem that the guide cone head is easy to damage, and has the advantages of improving the resistance to external force damage and being accurate and stable in positioning.

Description

Technical Field

[0001] The utility model relates to the field of corn harvester equipment, in particular to a corn stem pulling roller group. Background Art

[0002] In the process of harvesting corn, most of the existing corn is separated from the corn stalks by corn harvesters. The rear end and power end of the stalk pulling roller on the cutting table of the existing corn harvester are generally installed on the gearbox of the corn harvester, and the power end is driven by the transmission component to rotate. The free end and front end of the stalk pulling roller are guide cones, which play the role of gathering the corn stalks and guiding the corn stalks to the roller body of the stalk pulling roller for separation.

[0003] In the prior art, there is a Chinese utility model patent with application number CN201921234479.X and application name "A stem pulling roller for the cutting table of a fresh corn harvester". An inner rotating roller is arranged at the inner central position of the stem pulling roller sleeve, and a connecting plate is fixedly connected to the outer wall of one side of the stem pulling roller sleeve by bolts, a stem pulling plate is welded to the outer wall of the connecting plate away from the stem pulling roller sleeve, an inclined plate is welded to the outer wall of one side of the stem pulling plate, a conical sleeve is welded to one end of the stem pulling roller sleeve, and a spiral blade is welded to the outer wall of one side of the conical sleeve. For example, there is a Chinese utility model patent with application number CN202023251050.7 and application name "A corn stem pulling roller group". The utility model relates to a corn stem pulling roller group, in the technical field of corn cutting stations, a guide cone is arranged at the closed end of a stem pulling roller body, the lower end of the stem pulling roller body is an open end, a square hole is arranged at the center of a bottom plate, the lower end of a square tube is installed at the square hole, a plurality of stem pulling ribs arranged in a circular array are arranged on the side wall of the stem pulling roller body, the upper end of the stem pulling ribs is connected to the side wall of the stem pulling roller body, the lower end of the stem pulling ribs is connected to the bottom plate, the stem pulling ribs on adjacent stem pulling roller bodies are arranged in an alternating manner, and there is a gap between the stem pulling ribs and the adjacent side walls of the stem pulling roller bodies.

[0004] In short, the whole stem pulling roller is connected to the corn harvester in a cantilever-like installation mode, with only one end being rotatably mounted on the harvester. The guide cone is closed and rotates with the stem pulling roller as part of the stem pulling roller without support. However, the guide cone is the first area of ​​the stem pulling roller to work, that is, the first area to be subjected to external force. During the stem pulling process, the guide cone at the free end may be offset and easily damaged, and the two stem pulling rollers may easily break.

[0005] Therefore, there is an urgent need for a corn stalk pulling roller group that can improve the positioning accuracy of the stalk pulling roller without affecting the rotation operation of the stalk pulling roller. Utility Model Content

[0006] The utility model aims to provide a corn stalk pulling roller group which can ensure that the guide cone of the stalk pulling roller is also supported by the corn harvester.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] A corn stem pulling roller set comprises a pair of stem pulling rollers placed in parallel, wherein the stem pulling rollers comprise, from back to front, a stem pulling roller body, a hollow guide cone head fixedly connected to the stem pulling roller body, and a rotating seat coaxial with the guide cone head and rotatably connected thereto;

[0009] The outer surface of the guide cone head is truncated cone-shaped as a whole;

[0010] The front end of the rotating seat is detachably connected to be installed on a fixed shaft on a corn harvester; the middle part of the rotating seat is provided with a shoulder with a diameter larger than the inner diameter of the guide cone head, and the rear end of the rotating seat extends into the guide cone head and is rotatably supported by the guide cone head.

[0011] Furthermore, the axis of the fixed shaft is perpendicular to the axis of the stem pulling roller;

[0012] The fixed shaft is detachably connected to the front end of the rotating seat via a fastener.

[0013] Furthermore, the front end of the rotating seat has a U-shaped opening facing forward, and one end of the fixed shaft extends into the opening;

[0014] The fastener comprises a bolt and a nut. The bolt passes through an opening and one end of the fixed shaft and is covered with a nut.

[0015] Furthermore, a bearing for rotatably supporting the rotating seat is arranged inside the guide cone head, and the bearing sleeve is outside the rear end of the rotating seat.

[0016] Furthermore, a through hole is provided at the front end of the guide cone head for the rotating seat to extend therein, and a sealing ring is provided inside the guide cone head and sleeved outside the rotating seat to seal and connect the rotating seat with the through hole of the guide cone head.

[0017] Furthermore, the front end of the stem pulling roller body is hollow and fixed with a threaded column with external threads, the rear end of the guide cone head extends into the front end of the stem pulling roller body and is sleeved on the outside of the threaded column, and the rear end of the guide cone head is threadedly connected to the threaded column.

[0018] In the above technical solution, the utility model provides a corn stem pulling roller group, which has the following

[0019] Beneficial effects:

[0020] The utility model installs the front end of the stem pulling roller on the corn harvester through a rotating seat and a fixed shaft, the guide cone head of the stem pulling roller can rotate with the stem pulling roller, the rotating seat rotates relative to the guide cone head, and the fixed shaft is installed on the corn harvester, so that the guide cone head rotates and is supported by the corn harvester. In this way, both the front and rear ends of the stem pulling roller are supported by the corn harvester, and the installation position of the stem pulling roller on the corn harvester is more accurate, and the end close to the guide cone head will not move during operation. In addition, the ability of the guide cone head to resist external force damage is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0022] Figure 1 It is a structural schematic diagram of a corn stem pulling roller group disclosed in the utility model;

[0023] Figure 2 It is a structural schematic diagram of the front end of the stem pulling roller disclosed in the utility model;

[0024] Figure 3 The utility model discloses an internal structure diagram of a guide cone head.

[0025] Reference numerals:

[0026] The stem pulling roller body 1, the threaded column 11, the guide cone head 2, the bearing 21, the sealing ring 22, the rotating seat 3, the shoulder 31, and the fixed shaft 4. DETAILED DESCRIPTION

[0027] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0028] A corn stalk pulling roller group includes a pair of parallel stalk pulling rollers, which include, from back to front, a stalk pulling roller body 1, a hollow guide cone head 2 fixedly connected to the stalk roller body 1, and a rotating seat 3 coaxial with the guide cone head 2 and rotatably connected.

[0029] The function of the stem pulling roller body 1 is to pull the stems.

[0030] The outer surface of the hollow guide cone head 2 is in the shape of a truncated cone as a whole. It can rotate integrally with the stem pulling roller body 1 and can be fixed on the stem pulling roller body 1 by welding or fasteners.

[0031] Preferably, the front end of the stem pulling roller body 1 is a hollow cylinder and a threaded column 11 with external threads is built in and fixed therein, and the threaded column 11 and the inner wall of the front end of the stem pulling roller body 1 form an annular gap for the rear end of the guide cone head 2 to extend into. The rear end of the guide cone head 2 extends into the interior of the front end of the stem pulling roller body 1 and is sleeved on the outside of the threaded column 11, and the rear end of the guide cone head 2 and the threaded column 11 are threadedly connected to realize the fixing of the guide cone head 2 to the stem pulling roller body 1.

[0032] The front end of the rotating seat 3 is detachably connected to the fixed shaft 4, and the middle part of the rotating seat 3 is provided with a shoulder 31 whose diameter is larger than the inner diameter of the guide cone head 2. The rear end of the rotating seat 3 extends into the guide cone head 2 and is rotatably supported by the guide cone head 2. The front end of the rotating seat 3 and the shoulder 31 are located outside the guide cone head 2, and the rear end of the rotating seat 3 is rotatably connected to the guide cone head 2. The front end of the rotating seat 3 is mounted to the fixed shaft 4 on the corn harvester, and the fixed shaft 4 is fixed to the corn harvester to realize the fixed connection between the rotating seat 3 and the corn harvester. Preferably, the fixed shaft 4 is installed on the outside of the two stem pulling rollers so as not to affect the stalks passing through the inner side of the two stem pulling rollers. In this way, the front end of the stem pulling roller is supported by the corn harvester through the rotating seat 3 and the fixed shaft 4, while not affecting the rotation operation of the stem pulling roller. The rear end of the stem pulling roller is driven by a power component that provides rotational power. The front end of the guide cone head 2 is provided with a shoulder 31. The shoulder 31 is beneficial for limiting the axial position of the guide cone head 2, but it is not required that the guide cone head 2 and the shoulder 31 are in contact. It is preferred that a gap is left between the guide cone head 2 and the shoulder 31 in the axial direction to prevent the guide cone head 2 from rotating and wearing the rotating seat 3.

[0033] In another preferred embodiment, the axis of the fixed shaft 4 is perpendicular to the axis of the stem pulling roller, so that the stems passing through the inner sides of the two stem pulling rollers are not affected. The fixed shaft 4 is detachably connected to the front end of the rotating seat 3 by a fastener.

[0034] Specifically, the front end of the rotating seat 3 has a U-shaped opening facing forward, and one end of the fixed shaft 4 extends into the opening; the fastener includes a bolt and a nut, and the bolt passes through the opening and one end of the fixed shaft 4 and is covered with the nut. The U-shaped opening facilitates the disassembly of the rotating seat 3 and the fixed shaft 4.

[0035] In another preferred embodiment, a bearing 21 for rotatably supporting the rotating seat 3 is disposed inside the guide cone head 2 , and the bearing 21 is sleeved on the outside of the rear end of the rotating seat 3 .

[0036] The front end of the guide cone head 2 is provided with a through hole for the rotating seat 3 to extend into, and a sealing ring 22 is fixed inside the guide cone head 2 and sleeved on the outside of the rotating seat 3 to seal the rotating seat 3 and the through hole of the guide cone head 2 to prevent debris from entering the guide cone head 2.

[0037] like Figure 3As shown, the inner wall of the guide cone head 2 is a three-stage stepped hole with an inner diameter gradually increasing from the front to the back, and a through hole is provided at the front end of the guide cone head 2 for the rotating seat 3 to extend into. The through hole is the first stage of the stepped hole, the hole on the second stage is used to install the sealing ring 22, and the hole on the third stage is used to install at least one bearing 21. The rear end of the rotating seat 3 is installed with an elastic retaining ring located behind the bearing.

[0038] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A corn stalk pulling roller set, comprising a pair of parallel placed stalk pulling rollers, characterized in that: The stem pulling roller comprises, from back to front, a stem pulling roller body (1), a hollow guide cone head (2) fixedly connected to the stem pulling roller body (1), and a rotating seat (3) coaxial with and rotatably connected to the guide cone head (2); The outer surface of the guide cone head (2) is in the shape of a truncated cone as a whole; The front end of the rotating seat (3) is detachably connected to a fixed shaft (4) for mounting on a corn harvester, the middle part of the rotating seat (3) is provided with a shoulder (31) having a diameter greater than the inner diameter of the guide cone head (2), and the rear end of the rotating seat (3) extends into the guide cone head (2) and is rotatably supported by the guide cone head (2).

2. A corn stalk pulling roller assembly according to claim 1, characterized in that: The axis of the fixed shaft (4) is perpendicular to the axis of the stem pulling roller; The fixed shaft (4) is detachably connected to the front end of the rotating seat (3) via a fastener.

3. A corn stalk pulling roller assembly according to claim 2, characterized in that: The front end of the rotating seat (3) has a forward U-shaped opening, and one end of the fixed shaft (4) extends into the opening; The fastener comprises a bolt and a nut, wherein the bolt passes through an opening and the fixed shaft (4) and is sleeved with the nut.

4. The corn stalk pulling roller assembly according to claim 1, characterized in that: A bearing (21) for rotatably supporting the rotating seat (3) is arranged inside the guide cone head (2), and the bearing (21) is sleeved outside the rear end of the rotating seat (3).

5. A corn stalk pulling roller assembly according to claim 1 or 4, characterized in that: A through hole is provided at the front end of the guide cone head (2) for the rotating seat (3) to extend therein, and a sealing ring (22) is provided inside the guide cone head (2) and is sleeved outside the rotating seat (3) so that the rotating seat (3) and the through hole of the guide cone head (2) are sealed and connected.

6. The corn stalk pulling roller assembly according to claim 1, characterized in that: The front end of the stem-pulling roller body (1) is hollow and fixed with a threaded column (11) with external threads, the rear end of the guide cone head (2) extends into the front end of the stem-pulling roller body (1) and is sleeved on the outside of the threaded column (11), and the rear end of the guide cone head (2) is threadedly connected to the threaded column (11).

Images