Chain tensioning mechanism, chain transmission system and ditching and ridging machine

Abstract

The utility model discloses a chain tensioning mechanism, chain transmission system and furrowing ridger relates to ridging work technical field, including tensioning body, bearing body and elastic traction body, the first end of bearing body can be rotatingly provided on the frame, the one end of elastic traction body is connected on the frame, and the other end of elastic traction body is connected on the frame. The other end of the elastic traction body is connected to the bearing body, the elastic traction body can provide elastic force for the bearing body, the tensioning body is arranged on the bearing body, and the bearing body is used for making contact with a transmission chain. Under the elastic action of the elastic traction body, the tensioning body can be tightly pressed on the transmission chain, so that the transmission chain is tensioned; according to the chain tensioning mechanism, the chain transmission system and the ditching and ridging machine, the transmission chain can be tensioned in real time in a self-adaptive mode during ditching and ridging operation.

Description

Technical Field

[0001] The utility model relates to the technical field of ridging operations, in particular to a chain tensioning mechanism, a chain transmission system and a furrowing and ridging machine. Background Art

[0002] In agricultural production, ridge cultivation is the most common cultivation mode. Ridge cultivation has the advantages of promoting crop root growth, drainage and waterlogging prevention, and centralized fertilization, which is beneficial to improving crop quality and yield. Ridge cultivation requires a certain ridge depth and ridge surface flatness. At present, mechanized operations are usually used. The existing hand-held furrowing and ridging machines use chain transmission for ridging operations. During long-term operations, the chain is prone to loosening and the ridging effect cannot be achieved. Therefore, it is necessary to perform comprehensive maintenance on the equipment after each operation. On the one hand, it increases the maintenance cost of the equipment, and on the other hand, it also wastes corresponding time.

[0003] In view of the deficiencies in the prior art, how to prevent the chain from loosening has become a difficult problem that needs to be solved urgently. Utility Model Content

[0004] The utility model aims to provide a chain tensioning mechanism, a chain transmission system and a furrowing and ridging machine to solve the problems existing in the above-mentioned prior art and can adaptively tension the transmission chain in real time during furrowing and ridging operations.

[0005] To achieve the above purpose, the utility model provides the following solutions:

[0006] The utility model provides a chain tensioning mechanism, comprising a tensioning body, a bearing body and an elastic traction body, wherein the first end of the bearing body can be rotatably arranged on a frame, one end of the elastic traction body is connected to the frame, and the other end of the elastic traction body is connected to the bearing body, the elastic traction body can provide elastic force for the bearing body, the tensioning body is arranged on the bearing body, and the bearing body is used to contact with a transmission chain; under the elastic force of the elastic traction body, the tensioning body can be pressed against the transmission chain to tension the transmission chain.

[0007] Preferably, the number of the tensioning bodies is two, which are respectively a first tensioning body and a second tensioning body. The first tensioning body is arranged on the first end of the carrier, and the first tensioning body is used to contact the outer side surface of the lower part of the transmission chain. The second tensioning body is arranged on the second end of the carrier, and the second tensioning body is used to contact the inner side surface of the upper part of the transmission chain.

[0008] Preferably, the tensioning body is rotatably disposed on the supporting body.

[0009] Preferably, the tensioning body is a tensioning bearing, the tensioning body is sleeved on a rotating shaft, and the rotating shaft is connected to the supporting body.

[0010] Preferably, the elastic force provided by the elastic traction body to the supporting body is a tensile force.

[0011] Preferably, the elastic traction body is a spring.

[0012] Preferably, it also includes a first limit assembly and a second limit assembly, wherein the first limit assembly and the second limit assembly are both arranged on the frame, the first limit assembly is placed at the first end of the carrier, and the second limit assembly is placed at the second end of the carrier, and the first limit assembly and the second limit assembly can limit the rotation range of the carrier.

[0013] Preferably, the first limiting assembly includes a first mounting plate, a first limiting bolt and a first locking nut, the first mounting plate being fixedly provided on the frame, and at least two first mounting holes are opened on the first mounting plate from top to bottom, the first limiting bolt is used to be threadedly connected to one of the first mounting holes, the circumferential surface of the first limiting bolt is used to contact the upper side surface of the carrier, and the first locking nut can lock the first limiting bolt; the second limiting assembly includes a second mounting plate, a second limiting bolt and a second locking nut, the second mounting plate is fixedly provided on the frame, the second mounting plate is opened on the second mounting hole, the second limiting bolt is threadedly connected to the second mounting hole, the end face of the second limiting bolt is used to contact the lower side surface of the carrier, and the second locking nut can lock the second limiting bolt.

[0014] The utility model provides a chain transmission system, comprising a driving sprocket, a driven sprocket, a transmission chain and the above-mentioned chain tensioning mechanism.

[0015] The utility model provides a furrowing and ridging machine, comprising a frame and the above-mentioned chain transmission system.

[0016] Compared with the prior art, the utility model has achieved the following technical effects:

[0017] The chain tensioning mechanism, chain transmission system and furrowing and ridging machine provided by the utility model are provided with a carrier body in contact with the transmission chain, and an elastic traction body is provided to provide elastic force for the carrier body. Under the elastic force of the elastic traction body, the tensioning body can be pressed against the transmission chain to tension the transmission chain. During furrowing and ridging operations, the transmission chain can be adaptively tensioned in real time without special maintenance, and the operation is simple and the adjustment is convenient, which greatly improves the overall operation efficiency and reduces the maintenance time and cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the utility model 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 of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 A schematic diagram of a furrowing and ridging machine provided by the utility model;

[0020] Figure 2 for Figure 1 Schematic diagram of the chain transmission system in FIG.

[0021] Figure 3 for Figure 2 Schematic diagram of the chain tensioning mechanism in FIG.

[0022] Figure 4 for Figure 3 A schematic diagram of the first limiting component and the second limiting component in FIG.

[0023] In the figure: 1-driving mechanism, 2-operating handrail, 3-traveling wheel, 4-riding mechanism, 5-ditching mechanism, 6-gear box assembly, 7-chain transmission system, 71-driving sprocket, 72-driven sprocket, 73-transmission chain, 74-chain tensioning mechanism, 741-tensioning body, 742-bearing body, 743-mounting bolt, 744-elastic traction body, 745-rotating shaft, 746-second limiting assembly, 7461-second mounting plate, 7462-second limiting bolt, 7463-second locking nut, 747-first limiting assembly, 7471-first mounting plate, 7472-first limiting bolt, 7473-first locking nut. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] The utility model aims to provide a chain tensioning mechanism, a chain transmission system and a furrowing and ridging machine to solve the problems existing in the above-mentioned prior art and can adaptively tension the transmission chain in real time during furrowing and ridging operations.

[0026] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0027] Embodiment 1

[0028] like Figure 1-4 As shown, this embodiment provides a chain tensioning mechanism 74, including a tensioning body 741, a supporting body 742 and an elastic traction body 744. The first end of the supporting body 742 can be rotatably arranged on the frame, one end of the elastic traction body 744 is connected to the frame, and the other end of the elastic traction body 744 is connected to the supporting body 742. The elastic traction body 744 can provide elastic force for the supporting body 742. The tensioning body 741 is arranged on the supporting body 742, and the supporting body 742 is used to contact with the transmission chain 73; under the elastic force of the elastic traction body 744, the tensioning body 741 can be pressed against the transmission chain 73 to tension the transmission chain 73.

[0029] The chain tensioning mechanism 74 provided in this embodiment is provided with a carrier 742 in contact with the transmission chain 73, and an elastic traction body 744 is provided to provide elastic force for the carrier 742. Under the elastic force of the elastic traction body 744, the tensioning body 741 can be pressed against the transmission chain 73 to tension the transmission chain 73. During furrowing and ridging operations, the transmission chain 73 can be adaptively tensioned in real time without special maintenance, and the operation is simple and the adjustment is convenient, which greatly improves the overall operation efficiency and reduces maintenance time and cost.

[0030] In this embodiment, the first end of the carrier 742 is rotatably arranged on the frame by means of the mounting bolt 743. As an optional implementation mode of this embodiment, after the tensioning body 741 tensions the transmission chain 73, the first end of the carrier 742 can be locked and fixed on the frame by means of the mounting bolt 743 to keep the transmission chain 73 tensioned. After the mounting bolt 743 is loosened due to vibration during use, the tensioning body 741 is pressed against the transmission chain 73 under the elastic force of the elastic traction body 744 to tension the transmission chain 73. In this way, the transmission chain 73 can be tensioned in real time and adaptively during furrowing and ridging operations without special maintenance. The tensioning principle is as follows:

[0031] Step 1: Install multiple tensioning bodies 741 on each of the two sets of rotating shafts 745, and install the rotating shafts 745 at the corresponding installation positions of the supporting body 742, and then install the supporting body 742 on the frame through the mounting bolts 743, so as to ensure that the supporting body 742 can rotate around the mounting bolts 743.

[0032] Step 2: Adjust the angle of the carrier 742 to ensure that the second tensioning body presses the inner side surface of the upper part of the transmission chain 73 from bottom to top, and the first tensioning body presses the outer side surface of the lower part of the transmission chain 73 from bottom to top, and install one end of the elastic traction body 744 in the mounting hole of the carrier 742, and the other end on the frame to ensure that the elastic traction body 744 is in a stretched state at this time.

[0033] Step three: Tighten the mounting bolts 743 so that the carrier 742 cannot rotate. At this point, the installation and adjustment of the chain tensioning mechanism 74 are completed. When the mounting bolts 743 are loosened and the inclination angle of the carrier 742 changes, the carrier 742 is tightened by the elastic traction body 744, so that the tensioning body 741 does not lose its tensioning function. This structure is simpler and has a good practical effect.

[0034] Step 4: After completing the adjustment of the chain tensioning mechanism 74, install the first limit assembly 747 and the second limit assembly 746, and determine the maximum swing range of the carrier 742 by adjusting the positions of the first limit bolt 7472 and the second limit bolt 7462. When operating the furrowing and ridging machine for ridging operations, since the transmission chain 73 is always in a tensioned state, even if there is shaking during the operation, the carrier 742 will be reset to its original position under the pulling force of the elastic traction body 744, thereby driving the tensioning body 741 installed thereon to always maintain a tensioned state with the transmission chain 73.

[0035] As a more preferred implementation manner of this embodiment, there are two tensioning bodies 741, which are respectively a first tensioning body and a second tensioning body. The first tensioning body is arranged on the first end of the carrier 742, and the first tensioning body is used to contact the outer side surface of the lower part of the transmission chain 73. The second tensioning body is arranged on the second end of the carrier 742, and the second tensioning body is used to contact the inner side surface of the upper part of the transmission chain 73 to ensure effective tensioning of the transmission chain 73.

[0036] Furthermore, the tensioning body 741 can be rotatably disposed on the supporting body 742 to effectively reduce the friction and wear between the transmission chain 73 and the tensioning body 741 .

[0037] As a more preferred implementation of this embodiment, the tensioning body 741 is a tensioning bearing. The tensioning body 741 is sleeved on the rotating shaft 745, and the rotating shaft 745 is connected to the supporting body 742 for easy use.

[0038] As a more preferred implementation of this embodiment, the elastic force provided by the elastic traction body 744 to the bearing body 742 is a tensile force, and the structure is simple.

[0039] As a more preferred implementation of this embodiment, the elastic traction body 744 is a spring, which is easy to manufacture and use.

[0040] Furthermore, the chain tensioning mechanism 74 provided in this embodiment also includes a first limiting assembly 747 and a second limiting assembly 746. The first limiting assembly 747 and the second limiting assembly 746 are both arranged on the frame. The first limiting assembly 747 is placed at the first end of the carrier 742, and the second limiting assembly 746 is placed at the second end of the carrier 742. The first limiting assembly 747 and the second limiting assembly 746 can limit the rotation range of the carrier 742. When working on an uneven field, the carrier 742 will swing left and right. At this time, the first limiting assembly 747 and the second limiting assembly 746 are used to ensure that the carrier 742 and the tensioning body 741 on the carrier 742 are always within the range limited by the first limiting assembly 747 and the second limiting assembly 746, thereby ensuring the effective tensioning of the transmission chain 73.

[0041] As a more preferred implementation of this embodiment, the first limiting assembly 747 includes a first mounting plate 7471, a first limiting bolt 7472 and a first locking nut 7473. The first mounting plate 7471 is fixedly arranged on the frame. At least two first mounting holes are opened on the first mounting plate 7471 from top to bottom. The first limiting bolt 7472 is used to be threadedly connected to one of the first mounting holes. The circumferential surface of the first limiting bolt 7472 is used to contact the upper side surface of the carrier 742. The first locking nut 7473 can lock the first The limiting bolt 7472 is locked; the second limiting assembly 746 includes a second mounting plate 7461, a second limiting bolt 7462 and a second locking nut 7463. The second mounting plate 7461 is fixed on the frame. A second mounting hole is opened on the second mounting plate 7461. The second limiting bolt 7462 is threadedly connected to the second mounting hole. The end face of the second limiting bolt 7462 is used to contact the lower side face of the carrier 742. The second locking nut 7463 can lock the second limiting bolt 7462. The structure is simple and easy to manufacture and use.

[0042] Embodiment 2

[0043] like Figure 1-2 As shown, this embodiment provides a chain transmission system 7, including a driving sprocket 71, a driven sprocket 72, a transmission chain 73 and the chain tensioning mechanism 74 in the first embodiment.

[0044] The chain transmission system 7 provided in this embodiment is provided with a carrier 742 in contact with the transmission chain 73, and an elastic traction body 744 is provided to provide elastic force for the carrier 742. Under the elastic force of the elastic traction body 744, the tensioning body 741 can be pressed against the transmission chain 73 to tension the transmission chain 73. During furrowing and ridging operations, the transmission chain 73 can be adaptively tensioned in real time without special maintenance, and the operation is simple and the adjustment is convenient, which greatly improves the overall operation efficiency and reduces the maintenance time and cost.

[0045] Embodiment 3

[0046] like Figure 1 As shown, this embodiment provides a furrowing and ridging machine, including a frame and the chain transmission system 7 in the second embodiment.

[0047] In this embodiment, the furrowing and ridging machine consists of a driving mechanism 1, an operating handrail 2, a walking wheel 3, a ridging mechanism 4, a furrowing mechanism 5, a gear box assembly 6, and the chain tensioning mechanism 74 in Example 1. It is driven by the driving mechanism 1 and the gear box assembly 6 to drive the walking wheel 3 forward and backward, and drive the ridging mechanism 4 and the furrowing mechanism 5 to work in conjunction to achieve furrowing and ridging operations.

[0048] The present invention uses specific examples to illustrate the principle and implementation of the present invention. The above examples are only used to help understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A chain tensioning mechanism, characterized in that: It includes a tensioning body, a bearing body and an elastic traction body, wherein the first end of the bearing body can be rotatably arranged on a frame, one end of the elastic traction body is connected to the frame, and the other end of the elastic traction body is connected to the bearing body, and the elastic traction body can provide elastic force for the bearing body, and the tensioning body is arranged on the bearing body, and the bearing body is used to contact with a transmission chain; under the elastic force of the elastic traction body, the tensioning body can be pressed against the transmission chain to tension the transmission chain.

2. The chain tensioning mechanism according to claim 1, characterized in that: There are two tensioning bodies, which are respectively a first tensioning body and a second tensioning body. The first tensioning body is arranged on the first end of the carrier, and is used to contact the outer side surface of the lower part of the transmission chain. The second tensioning body is arranged on the second end of the carrier, and is used to contact the inner side surface of the upper part of the transmission chain.

3. The chain tensioning mechanism according to claim 1, characterized in that: The tensioning body is rotatably arranged on the supporting body.

4. The chain tensioning mechanism according to claim 3, characterized in that: The tensioning body is a tensioning bearing, and the tensioning body is sleeved on a rotating shaft, and the rotating shaft is connected to the bearing body.

5. The chain tensioning mechanism according to claim 1, characterized in that: The elastic force provided by the elastic traction body to the bearing body is a tensile force.

6. The chain tensioning mechanism according to claim 1, characterized in that: The elastic traction body is a spring.

7. The chain tensioning mechanism according to claim 1, characterized in that: It also includes a first limit assembly and a second limit assembly, both of which are arranged on the frame, the first limit assembly is placed at the first end of the carrier, and the second limit assembly is placed at the second end of the carrier, and the first limit assembly and the second limit assembly can limit the rotation range of the carrier.

8. The chain tensioning mechanism according to claim 7, characterized in that: The first limiting assembly includes a first mounting plate, a first limiting bolt and a first locking nut, the first mounting plate being fixedly arranged on the frame, and at least two first mounting holes are opened on the first mounting plate from top to bottom, the first limiting bolt is used to be threadedly connected to one of the first mounting holes, the circumferential surface of the first limiting bolt is used to contact the upper side surface of the carrier, and the first locking nut can lock the first limiting bolt; the second limiting assembly includes a second mounting plate, a second limiting bolt and a second locking nut, the second mounting plate is fixedly arranged on the frame, the second mounting plate is opened with a second mounting hole, the second limiting bolt is threadedly connected to the second mounting hole, the end face of the second limiting bolt is used to contact the lower side surface of the carrier, and the second locking nut can lock the second limiting bolt.

9. A chain transmission system, characterized in that: It comprises a driving sprocket, a driven sprocket, a transmission chain and a chain tensioning mechanism as claimed in any one of claims 1 to 8.

10. A furrowing and ridging machine, characterized in that: The invention comprises a frame and a chain transmission system as claimed in claim 9.

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