Tensioning device between header reel chains

Abstract

The utility model provides a tensioning device between header seedling pulling chains, which belongs to the technical field of agricultural machinery and comprises a tensioning seat, the tensioning seat is respectively connected with a first seedling pulling chain support and a second seedling pulling chain support through reinforcing plates, an outer supporting pipe is arranged at the top of the tensioning seat, an inner supporting pipe is sleeved in the outer supporting pipe, and the inner supporting pipe is connected with the first seedling pulling chain support and the second seedling pulling chain support. The end, away from the outer supporting pipe, of the inner supporting pipe is rotationally connected with the supporting arm. The bottom of the inner supporting pipe is connected with the bottom of the outer supporting pipe through a tensioning mechanism. Second chain wheels are rotationally connected to the tops of the two ends of the supporting arm through bolts, first chain wheels are arranged at the ends, close to the tensioning base, of the first seedling pulling chain support and the second seedling pulling chain support correspondingly, and seedling pulling chains are connected between the first chain wheels and the second chain wheels. The two reel chains can be adjusted at the same time, so that the space utilization rate is increased, and the working efficiency is improved.

Description

Technical Field

[0001] This utility model belongs to the field of agricultural machinery technology, and in particular relates to a tensioning device between the cutting machine and the reeling chain. Background Technology

[0002] In recent years, the research and application of corn kernel harvesting headers have been very urgent. After the corn is harvested by the header, the conveying of the corn ears by the reeling chain is an important link. The rear end of the reeling chain is installed on the drive sprocket of the ear-picking box, and the front end is installed on the tensioning device sprocket. Whether the tensioning frame can reliably tension the reeling chain directly affects the reliability of the whole machine.

[0003] Currently, most vertical header harvesting machines in China use double springs for direct tensioning or tension springs for the clamping and conveying chains. Each harvesting chain has its own tensioning device, and multiple tensioning devices need to be adjusted during tensioning. This results in low space utilization and inconvenient tensioning adjustments, which affects work efficiency. Utility Model Content

[0004] In view of the defects or deficiencies in the existing technology, this utility model provides a tensioning device between the harvester chains, which can adjust two harvester chains at the same time, thereby improving both space utilization and work efficiency.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An embodiment of this utility model provides a tensioning device between the cutting table and the reeling chain, including a tensioning seat. The tensioning seat is connected to the first reeling chain support and the second reeling chain support respectively through a reinforcing plate. An outer support tube is provided on the top of the tensioning seat, and an inner support tube is sleeved inside the outer support tube. The end of the inner support tube away from the outer support tube is rotatably connected to the support arm. The bottom of the inner support tube and the outer support tube are connected through a tensioning mechanism.

[0007] The top of both ends of the support arm are rotatably connected to a second sprocket by bolts. The first sprocket is provided at the end of the first sprocket and the second sprocket near the tension seat. A sprocket chain is connected between the first sprocket and the second sprocket.

[0008] Furthermore, an ear plate is provided on the side of the support arm near the inner support tube, a first shaft hole is provided on the ear plate, a second shaft hole is provided at the end of the inner support tube, and a pin is inserted into the first shaft hole and the second shaft hole.

[0009] Furthermore, the tensioning mechanism includes a first baffle, which is disposed at the bottom of the tensioning seat and is perpendicular to the tensioning seat.

[0010] Furthermore, a first adjustment hole is provided on the first baffle, and the axial direction of the first adjustment hole is the same as the length direction of the outer support tube.

[0011] Furthermore, a tie rod is connected to the bottom of the inner support tube via a fixing plate, and the axis of the tie rod is in the same direction as the length of the inner support tube.

[0012] Furthermore, the end of the pull rod away from the fixed plate is inserted into the first adjustment hole, and the first adjustment hole and the pull rod slide relative to each other.

[0013] Furthermore, a sleeve is provided on the outside of the pull rod, the sleeve is located between the first baffle and the fixed plate, and the sleeve is slidably disposed with the pull rod.

[0014] Furthermore, a second baffle is provided at the end of the sleeve away from the first baffle.

[0015] Furthermore, a spring is fitted on the outside of the sleeve, with one end of the spring connected to the first baffle and the other end connected to the second baffle.

[0016] Furthermore, a nut is threaded onto the pull rod, and the nut is located on the side of the second baffle away from the sleeve.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0018] 1. This utility model connects the tensioning seat between the first reel chain support and the second reel chain, and connects the support arm through the outer support tube and the inner support tube. Both ends of the support arm are connected to the first reel chain support and the second reel chain support. The distance between the tensioning seat and the support arm is adjusted by the tensioning mechanism, thereby tensioning the two reel chains. It is not necessary to set a tensioning device for each reel chain, which improves the space utilization. In addition, adjusting the two reel chains at the same time makes the tension adjustment more convenient and improves the work efficiency.

[0019] 2. This utility model connects the inner support tube and the support arm with a pin, allowing the support arm to rotate around the pin, thereby driving the second sprocket to rotate, which facilitates the installation of the reeling chain. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the tensioning device structure in an embodiment of this utility model;

[0021] Figure 2 This is an exploded view of the tensioning device structure in an embodiment of this utility model;

[0022] Figure 3 This is a structural diagram of the bottom surface of the tensioning device in an embodiment of this utility model;

[0023] The components are as follows: 1. Tensioner seat; 2. Reinforcing plate; 3. First reel chain bracket; 4. Second reel chain bracket; 5. Outer support tube; 6. Inner support tube; 7. Support arm; 8. Ear plate; 9. Pin shaft; 10. Second sprocket; 11. Reel chain; 12. First baffle; 13. Pull rod; 14. Sleeve; 15. Spring; 16. Second baffle; 17. Nut. Detailed Implementation

[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0025] A typical embodiment of this utility model is as follows: Figure 1 and Figure 2 As shown, a tensioning device between the cutting machine and the reeling chain includes a tensioning seat 1. The tensioning seat 1 is connected to the first reeling chain support 3 and the second reeling chain support 4 respectively through a reinforcing plate 2. An outer support tube 5 is provided on the top of the tensioning seat 1. An inner support tube 6 is sleeved inside the outer support tube 5, and the inner support tube 6 and the outer support tube 5 can slide relative to each other. The end of the inner support tube 6 away from the outer support tube 5 is rotatably connected to the support arm 7. Specifically, an ear plate 8 is provided on the side of the support arm 7 near the inner support tube 6. The ear plate 8 is U-shaped and has a first shaft hole. A second shaft hole is provided at the end of the inner support tube 6. The first shaft hole and the second shaft hole are correspondingly arranged. By inserting a pin 9 into the first shaft hole and the second shaft hole, the rotatable connection between the inner support tube 6 and the support arm 7 is realized.

[0026] By connecting the inner support tube 6 and the support arm 7 through the pin 9, the support arm 7 can rotate around the pin 9, thereby driving the second sprocket 10 to rotate, which facilitates the installation of the reeling chain 11.

[0027] The top of both ends of the support arm 7 is rotatably connected to the second sprocket 10 by bolts. The first sprocket is provided at the end of the first sprocket support 3 and the second sprocket support 4 near the tension seat 1. The sprocket chain 11 is connected between the first sprocket and the second sprocket 10.

[0028] The bottoms of the outer support tube 5 and the inner support tube 6 are connected by a tensioning mechanism. The tensioning mechanism can drive the inner support tube 6 to move inside the outer support tube 5, thereby adjusting the distance between the tensioning seat 1 and the support arm 7, and thus tensioning the reel chain 11.

[0029] Specifically, such as Figure 2 and Figure 3As shown, the tensioning mechanism includes a first baffle 12, which is disposed at the bottom of the tensioning seat 1 and is perpendicular to the tensioning seat 1. A first adjustment hole is provided on the first baffle 12, the axis of which is in the same direction as the length of the outer support tube 5. A pull rod 13 is connected to the bottom of the inner support tube 6 via a fixing plate, the axis of which is in the same direction as the length of the inner support tube 6. The end of the pull rod 13 furthest from the fixing plate is inserted into the first adjustment hole, and the first adjustment hole and the pull rod 13 can slide relative to each other. A sleeve 14 is provided, which is located between the first baffle 12 and the fixed plate. The sleeve 14 is slidably disposed with the pull rod 13. A spring 15 is sleeved on the outside of the sleeve 14. A second baffle 16 is provided at the end of the sleeve 14 away from the first baffle 12. One end of the spring 15 is connected to the first baffle 12 and the other end is connected to the second baffle 16. The pull rod 13 is a threaded rod with a nut 17 threadedly connected to it. The nut 17 is located on the side of the second baffle 16 away from the sleeve 14. By setting the nut 17, the position of the sleeve 14 and the spring 15 can be restricted.

[0030] When it is necessary to adjust the tension of the reeling chain 11, rotate the nut 17. At this time, the spring 15 is compressed. The elastic force of the spring 15 drives the inner support tube 6 to slide inside the outer support tube 5, thereby adjusting the distance between the tensioning seat 1 and the support arm 7, and thus tensioning the reeling chain 11.

[0031] This invention connects a tensioning seat between the first and second reeling chains and a support arm via an outer and inner support tube. Both ends of the support arm are connected to the first and second reeling chains. By adjusting the distance between the tensioning seat and the support arm using a tensioning mechanism, the two reeling chains can be tensioned without the need for a tensioning device on each chain, thus improving space utilization. Furthermore, adjusting both chains simultaneously makes tension adjustment more convenient and improves work efficiency.

[0032] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A tensioning device between the reeling chains of a header, characterized in that, The tensioning seat is connected to the first and second reeling chain supports via reinforcing plates. An outer support tube is provided on the top of the tensioning seat, and an inner support tube is sleeved inside the outer support tube. The end of the inner support tube away from the outer support tube is rotatably connected to the support arm. The bottom of the inner support tube and the outer support tube are connected via a tensioning mechanism. The top of both ends of the support arm are rotatably connected to a second sprocket by bolts. The first sprocket is provided at the end of the first sprocket and the second sprocket near the tension seat. A sprocket chain is connected between the first sprocket and the second sprocket.

2. The tensioning device between the header reeling chain as described in claim 1, characterized in that, The support arm is provided with an ear plate on the side near the inner support tube. The ear plate has a first shaft hole, and the end of the inner support tube has a second shaft hole. A pin is inserted into the first shaft hole and the second shaft hole.

3. The tensioning device between the header reeling chain as described in claim 1, characterized in that, The tensioning mechanism includes a first baffle, which is disposed at the bottom of the tensioning seat and is perpendicular to the tensioning seat.

4. The tensioning device between the header reeling chain as described in claim 3, characterized in that, The first baffle is provided with a first adjustment hole, and the axial direction of the first adjustment hole is the same as the length direction of the outer support tube.

5. The tensioning device between the header reeling chain as described in claim 4, characterized in that, The bottom of the inner support tube is connected to a tie rod via a fixing plate, and the axis of the tie rod is in the same direction as the length of the inner support tube.

6. The tensioning device between the header reeling chain as described in claim 5, characterized in that, The end of the pull rod away from the fixed plate is inserted into the first adjustment hole, and the first adjustment hole and the pull rod slide relative to each other.

7. The tensioning device between the header reeling chain as described in claim 5, characterized in that, The pull rod is fitted with a sleeve, which is located between the first baffle and the fixed plate, and the sleeve is slidably disposed with the pull rod.

8. The tensioning device between the header reeling chain as described in claim 7, characterized in that, A second baffle is provided at the end of the sleeve away from the first baffle.

9. A tensioning device between the header reeling chains as described in claim 8, characterized in that, A spring is fitted on the outside of the sleeve, with one end of the spring connected to the first baffle and the other end connected to the second baffle.

10. The tensioning device between the header reeling chain as described in claim 8, characterized in that, A nut is threaded onto the pull rod, and the nut is located on the side of the second baffle away from the sleeve.

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