Spiral drive clutch of combine harvester
By designing a pure mechanical structure with a friction -free piece to protect the clutch, use the spring group and the connected skating clutch mechanism to solve the problem of the existing clutch failure in frequent slip and wear. Simple, suitable for complex farmland environment.
Patent Information
- Application Number
- CN202323537309.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-22
- Publication Date
- 2025-01-28
- Estimated Expiration
- 2033-12-22
AI Technical Summary
The existing spiral-driven clutch of the combined harvester is prone to failure during frequent slippage and wear, and has an imperfect structure and difficult maintenance, resulting in increased market demand, but the quality of domestic products does not meet expectations and depends on imports.
The skid -off protection clutch that is designed with a pure mechanical structure is designed. The inner wall of the outside body is equipped with axial grooves and a slip clutch mechanism. Each group of institutions include spring groups and connection sales. Sliding out the axial groove of the external body to achieve slipping protection.
The skid protection of friction -free pieces has been achieved, the wear is reduced, the maintenance and adjustment are simplified, suitable for high -intensity continuous operation and complex farmland environment, and avoiding the impact of mud and oil stain on traditional friction tablets.
Smart Images
Figure CN222396258U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a clutch, in particular to a spiral-driven clutch of a combine harvester. Background Art
[0002] At present, a combine harvester is a combined machine for harvesting crops. It is a harvesting machine that can complete the processes of harvesting, threshing, separating stems, and removing debris of cereal crops at one time and obtain grains directly from the field.
[0003] Combine harvesters generally work continuously under long-term and high-intensity conditions during the busy farming season. In some harsh working processes, the protection mechanism of the harvester's spiral drive assembly uses a friction plate type slip protection clutch. Due to frequent slippage, excessive slippage causes the friction plate to wear, deform or break. For example, during the harvesting process, the harvester encounters hard stones. Harvesting in a lodging state will increase the number of frequent clutch protection times, causing the combine harvester's spiral drive clutch to malfunction and even cause downtime losses, thereby increasing the market demand for clutches. However, a considerable number of clutch structures used in domestic combine harvesters are currently imperfect in performance and the quality does not meet expectations. The manufacturing process is time-consuming and labor-intensive, and most of them rely on imports.
[0004] The defects of the existing clutch are: 1. The friction plates in the clutch are constantly rubbed and wear out or even sintered at high temperature, which eventually leads to too little pressure or too uneven pressure between the friction plates, causing the pressure plate to deviate and vibrate, resulting in reduced friction torque and failure;
[0005] 2. The friction plate structure has a destructive effect on the performance of the friction plate when muddy water pours in;
[0006] 3. The performance is not perfect, it is not easy to disassemble, the import cost is high and it is time-consuming and labor-intensive. Summary of the invention
[0007] The purpose of the utility model is to provide a purely mechanical structure without friction plate slip protection, which is not prone to wear and is convenient for later maintenance and adjustment; and it is easy to install, connect and remove wires, and the slip torque is factory adjustable, suitable for high-intensity continuous operation, suitable for various farmlands with complex terrain, and a spiral-driven clutch for a combine harvester for harvesting crops under lodging conditions.
[0008] In order to achieve the above-mentioned purpose, the technical solution of the utility model is: a spiral-driven clutch of a combine harvester, comprising an adapter, an outer body and an inner ring, wherein the adapter is arranged at one end of the outer body, and the adapter is assembled with the outer body through a connecting mechanism, the inner ring is arranged in the inner hole of the outer body, and a limit sealing mechanism is arranged between the outer body and the inner ring, and the innovation lies in:
[0009] The inner wall of the outer body is provided with a plurality of axial grooves along its circumferential direction.
[0010] At least one set of slip clutch mechanism is arranged on the outer circumference of the inner ring and along its circumferential direction. Each set of slip clutch mechanism includes a plurality of spring groups and connecting pins equal in number to the spring groups. The spring group is composed of spring I and spring II, and spring I is sleeved on the outer circumference of spring II.
[0011] A plurality of spring grooves are arranged in the circumferential direction of the outer circumference of the inner ring, each of which is provided with a spring group and is crimped by a corresponding connecting pin, while the head of the connecting pin is inserted into a corresponding axial groove on the inner wall of the outer body.
[0012] In the above technical solution, the connecting mechanism includes an end cover and an outer shell flange, the connector includes an integral connecting sleeve and a hexagonal flange, the outer periphery of one end of the outer body is provided with an outer shell flange integrally connected thereto or fixedly connected thereto, the end cover is arranged on the connecting sleeve and fits on the outer side surface of the hexagonal flange, and the end cover is detachably connected to the outer shell flange.
[0013] In the above technical solution, the flange portion of the hexagonal flange of the adapter is positioned and matched with the corresponding axial groove on the outer body.
[0014] In the above technical solution, the connecting sleeve of the adapter is provided with symmetrically arranged opening grooves for connecting with the driving shaft.
[0015] In the above technical solution, the limiting sealing mechanism includes a spring sheet, a gasket and a sealing ring. Positioning steps are provided at both ends of the inner ring, and the positioning steps at both ends of the inner ring are respectively provided with a spring sheet and a gasket. The spring sheet is located on the outside of the gasket. The sealing ring is arranged on a positioning step of the inner ring and is located at the other end of the outer body, so that the inner ring and the outer body form a sealed connection through the sealing ring.
[0016] In the above technical solution, a plurality of oil filling holes are provided on the outer body along its circumferential direction, and a sealing plug is provided on each oil filling hole.
[0017] In the above technical solution, the head of the connecting pin is provided with a protrusion which is integrally connected thereto, and the protrusion of the connecting pin is positioned and matched with the corresponding axial groove on the inner wall of the outer body.
[0018] In the above technical solution, the inner hole of the adapter is coaxial with the inner six holes arranged in the inner ring.
[0019] The positive effect of the utility model is that after the spiral-driven clutch of the combine harvester of the utility model is adopted, since the inner wall of the outer body of the utility model is provided with a plurality of axial grooves along the circumferential direction thereof,
[0020] At least one set of slipping clutch mechanism is arranged on the outer circumference of the inner ring and along its circumferential direction. Each set of anti-slip mechanism includes a plurality of spring groups and connecting pins equal in number to the spring groups. The spring group is composed of spring I and spring II, and spring I is sleeved on the outer circumference of spring II.
[0021] The inner ring outer circumference is provided with a plurality of spring grooves in the circumferential direction, each spring groove is provided with a spring group, and is crimped by a corresponding connecting pin, and the head of the connecting pin is inserted into the corresponding axial groove on the inner wall of the outer body.
[0022] The utility model maintains a closed state under normal working, and the connecting pin is located in the axial groove of the outer body. When the torque is too large and exceeds the clutch torque, it presents a separated state. With the rotation of the inner ring, the connecting pin will slide out of the axial groove of the outer body. Once slip protection occurs, the connecting pin will be in a "click-click-click" state and will continuously go in, out, and in from the axial groove until the excessive torque disappears. The connecting pin returns to the groove again and keeps transmitting the torque, thereby realizing a purely mechanical structure without friction plate slip protection, which is not prone to wear and convenient for later maintenance and adjustment. It is also simple to install, connect and remove, and the slip torque is factory adjustable. It is suitable for high-intensity continuous operation, suitable for farmlands with complex terrains, and harvesting when crops fall over.
[0023] The utility model discloses a clutch with a slipping clutch mechanism, which is helpful to prevent the harvester's straw divider from getting stuck, can realize a small-angle reversal, and remove the stuck object from a stuck state, which is beneficial to the rapid cleaning of the straw divider. The slipping mechanical clutch can effectively avoid the influence of mud, water, oil and the like on the friction coefficient of the traditional friction plate. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] Figure 1 It is a structural schematic diagram of a specific implementation mode of the utility model;
[0025] Figure 2 yes Figure 1 AA cross-sectional view in FIG.
[0026] Figure 3 It is a three-dimensional structural schematic diagram of the adapter of the utility model;
[0027] Figure 4 It is a three-dimensional structural schematic diagram of the outer body of the utility model;
[0028] Figure 5 It is a three-dimensional structural schematic diagram of the inner ring of the utility model. DETAILED DESCRIPTION
[0029] The present invention is further described below in conjunction with the accompanying drawings and given embodiments, but is not limited thereto.
[0030] like Figure 1 , 2 As shown in Figures 3, 4 and 5, a screw-driven clutch for a combine harvester comprises an adapter 1, an outer body 2 and an inner ring 3. The adapter 1 is arranged at one end of the outer body 2 and is assembled with the outer body 2 through a connecting mechanism. The inner ring 3 is arranged in the inner hole of the outer body 2, and a limit sealing mechanism is provided between the outer body 2 and the inner ring 3.
[0031] The inner wall of the outer body 2 is provided with a plurality of axial grooves 20 along its circumferential direction.
[0032] At least one set of slipping clutch mechanism is arranged on the outer periphery of the inner ring 3 and along its circumferential direction. Each set of anti-slip mechanism includes a plurality of spring groups and connecting pins 6 equal in number to the spring groups. The spring group is composed of spring I4 and spring II5. At the same time, spring I4 is sleeved on the outer periphery of spring II5.
[0033] A plurality of spring grooves are provided in the circumferential direction of the outer circumference of the inner ring 3 , each of which is provided with a spring group and is crimped by a corresponding connecting pin 6 , while the head of the connecting pin 6 is inserted into the corresponding axial groove 20 on the inner wall of the outer body 2 .
[0034] like Figure 1 As shown, in order to quickly position and assemble the adapter 1 and the outer body 2, the connecting mechanism includes an end cover 7 and a shell flange 8, the connector 1 includes a connecting sleeve 11 and a hexagonal flange 12 that are connected as one body, and the outer periphery of one end of the outer body 2 is provided with a shell flange 8 that is connected as one body or fixedly connected (welded) thereto, the end cover 7 is arranged on the connecting sleeve 11 and fits on the outer side of the hexagonal flange 12, and the end cover 7 is detachably connected to the shell flange 8 by self-locking nuts and screws.
[0035] like Figure 3 , 4 As shown, in order to prevent the adapter 1 from rotating relative to the outer body 2 , the flange portion of the hexagonal flange 12 of the adapter 1 is positioned and matched with the corresponding axial groove 20 on the outer body 2 .
[0036] like Figure 3 As shown, in order to form a quick positioning connection with the powertrain drive shaft, the connecting sleeve 11 of the adapter 1 is provided with symmetrically arranged opening grooves 111 for connecting with the device drive shaft.
[0037] like Figure 1As shown, in order to lubricate the spring group and prevent jamming, the limiting sealing mechanism includes a spring piece 9, a gasket 10 and a sealing ring 100. Positioning steps are provided at both ends of the inner ring 3, and spring pieces 9 and gaskets 10 are respectively provided on the positioning steps at both ends of the inner ring 3. The spring piece 9 is located on the outside of the gasket 10. The sealing ring 100 is provided on a positioning step of the inner ring 3 and is located at the other end of the outer body 2, so that the inner ring 3 and the outer body 2 form a sealed connection through the sealing ring 100.
[0038] like Figure 1 As shown, in order to facilitate the injection of grease or lubricant, a plurality of oil injection holes are provided on the outer body 2 and along its circumferential direction, and a sealing plug 101 is provided on each oil injection hole.
[0039] like Figure 4 As shown, in order to enable the connecting pin to form a separation and combination state with the outer body (i.e., clutch slippage), the head of the connecting pin 6 is provided with a protrusion 61 connected thereto, and the protrusion 61 of the connecting pin 6 is positioned and matched with the corresponding axial groove 20 on the inner wall of the outer body 2.
[0040] like Figure 1 , 2 As shown in , 5 , in order to ensure the stability of torque transmission and to position the inner ring and the equipment transmission shaft, the inner hole of the adapter 1 is coaxial with the inner six holes set in the inner ring 3 .
[0041] The utility model maintains a closed state under normal working, and the connecting pin is located in the axial groove of the outer body. When the torque is too large and exceeds the clutch torque, it presents a separated state. With the rotation of the inner ring, the connecting pin will slide out of the axial groove of the outer body. Once slip protection occurs, the connecting pin will be in a "click-click-click" state and will continuously go in, out, and in from the axial groove until the excessive torque disappears. The connecting pin returns to the groove again and keeps transmitting the torque, thereby realizing a purely mechanical structure without friction plate slip protection, which is not prone to wear and convenient for later maintenance and adjustment. It is also simple to install, connect and remove, and the slip torque is factory adjustable. It is suitable for high-intensity continuous operation, suitable for farmlands with complex terrains, and harvesting when crops fall over.
[0042] The utility model discloses a clutch with a slipping clutch mechanism, which is helpful to prevent the harvester's straw divider from getting stuck, can realize a small-angle reversal, and remove the stuck object from a stuck state, which is beneficial to the rapid cleaning of the straw divider. The slipping mechanical clutch can effectively avoid the influence of mud, water, oil and the like on the friction coefficient of the traditional friction plate.
[0043] Based on the above ideal embodiments of the utility model, the relevant staff can make various changes and modifications without deviating from the technical concept of the utility model through the above description. The technical scope of the utility model is not limited to the content of the specification, and its technical scope must be determined according to the scope of the claims.
Claims
1. A screw-driven clutch for a combine harvester, comprising an adapter (1), an outer body (2) and an inner ring (3), wherein the adapter (1) is arranged at one end of the outer body (2), and the adapter (1) is assembled with the outer body (2) via a connecting mechanism, the inner ring (3) is arranged in an inner hole of the outer body (2), and a limit sealing mechanism is provided between the outer body (2) and the inner ring (3), characterized in that: The inner wall of the outer body (2) is provided with a plurality of axial grooves (20) along its circumferential direction. At least one set of slipping clutch mechanisms is provided on the outer circumference of the inner ring (3) and along its circumferential direction. Each set of slipping clutch mechanisms includes a plurality of spring groups and connecting pins (6) equal in number to the number of spring groups. The spring group is composed of spring I (4) and spring II (5). At the same time, spring I (4) is sleeved on the outer circumference of spring II (5). A plurality of spring grooves are provided in the circumferential direction of the outer circumference of the inner ring (3), each spring groove is provided with a spring group, and is crimped by a corresponding connecting pin (6), while the head of the connecting pin (6) is inserted into a corresponding axial groove (20) on the inner wall of the outer body (2).
2. The screw-driven clutch of a combine harvester according to claim 1, characterized in that: The connecting mechanism comprises an end cover (7) and a shell flange (8), the adapter (1) comprises a connecting sleeve (11) and a hexagonal flange (12) which are connected as an integral unit, the outer periphery of one end of the outer body (2) is provided with a shell flange (8) which is connected as an integral unit or fixedly connected thereto, the end cover (7) is provided on the connecting sleeve (11) and is fitted on the outer side surface of the hexagonal flange (12), and the end cover (7) and the shell flange (8) are detachably connected.
3. The screw-driven clutch of a combine harvester according to claim 2, characterized in that: The flange portion of the hexagonal flange (12) of the adapter (1) is positioned and matched with the corresponding axial groove (20) on the outer body (2).
4. The screw-driven clutch of a combine harvester according to claim 2, characterized in that: The connecting sleeve (11) of the adapter (1) is provided with symmetrically arranged opening grooves (111) for connecting to a driving shaft of the device.
5. The screw-driven clutch of a combine harvester according to claim 1, characterized in that: The position-limiting sealing mechanism comprises a spring sheet (9), a gasket (10) and a sealing ring (100); positioning steps are provided at both ends of the inner ring (3); and spring sheets (9) and gaskets (10) are provided on the positioning steps at both ends of the inner ring (3), respectively; the spring sheet (9) is located outside the gasket (10); the sealing ring (100) is provided on a positioning step of the inner ring (3) and is located at the other end of the outer body (2), so that the inner ring (3) and the outer body (2) are sealed and connected via the sealing ring (100).
6. The screw-driven clutch of a combine harvester according to claim 1, characterized in that: A plurality of oil filling holes are provided on the outer body (2) and along its circumferential direction, and each oil filling hole is provided with a sealing plug (101).
7. The screw-driven clutch of a combine harvester according to claim 1, characterized in that: The head of the connecting pin (6) is provided with a protrusion (61) integrally connected thereto, and the protrusion (61) of the connecting pin (6) is positioned and matched with a corresponding axial groove (20) on the inner wall of the outer body (2).
8. The screw-driven clutch of a combine harvester according to claim 1, characterized in that: The inner hole of the adapter (1) is coaxial with the inner six holes provided in the inner ring (3).