CN212402458U - Chain tensioning device - Google Patents
Chain tensioning device Download PDFInfo
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- CN212402458U CN212402458U CN202020857937.1U CN202020857937U CN212402458U CN 212402458 U CN212402458 U CN 212402458U CN 202020857937 U CN202020857937 U CN 202020857937U CN 212402458 U CN212402458 U CN 212402458U
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- tensioning
- threaded rod
- chain
- guide sleeve
- spring
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Abstract
The utility model belongs to the technical field of the clamping and conveying of a vertical header of a corncob and stalk harvesting maize machine, and discloses a chain tensioning device which comprises a tensioning spring, a spring guide sleeve, a threaded rod, a tensioning wheel component, a tensioning wheel bracket, a movable guide sleeve, a fixed slideway and a threaded rod fixing plate, wherein the chain tensioning device is of a symmetrical structure; one end of the threaded rod is fixed on the threaded rod fixing plate, the other end of the threaded rod penetrates through the tensioning wheel support, and the tensioning spring is installed on the threaded rod. The utility model discloses a two pressure spring tensioning modes have solved the tensioning problem of reel chain subassembly, can increase the tensioning stroke in limited space, reduce the frequency of chain maintenance, have guaranteed the reliability of reel chain subassembly operation.
Description
Technical Field
The utility model belongs to the technical field of ear of grain stem is received maize machine vertical header centre gripping simultaneously and is carried, is about the patent in the aspect of the normal operation of standing grain chain, especially relates to a chain overspeed device tensioner.
Background
At present, a clamping conveying chain of a header of an internal vertical header harvesting machine is mostly tensioned fixedly or tensioned by a tension spring, and the tensioning space is insufficient or the tension spring is broken and fails after the chain is used for a period of time, so that the conveying chain cannot be tensioned, and the conveying function fails.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem that exists among the prior art, the utility model provides a chain tensioning device, including the tensioning spring, spring guide pin bushing, the threaded rod, the take-up pulley subassembly, the take-up pulley support, the activity guide pin bushing, fixed slide, the threaded rod fixed plate, screw rod on the take-up pulley support assembles on the activity guide pin bushing, activity guide pin bushing front side is equipped with the nut, length variation in the standing grain chain subassembly working process of dialling, the relative position of take-up pulley support and activity guide pin bushing is adjusted to the length of the movable guide pin bushing of screw rod screw in on the accessible adjustment take-up pulley support, make activity guide pin bushing and fixed slide have great cooperation length, thereby play better direction effect.
The chain tensioning device is of a symmetrical structure, the fixed slide ways are welded or assembled on the reel chain support, and the threaded rod fixing plates are symmetrically welded on the fixed slide ways.
The outer side of the movable guide sleeve is arranged in the fixed slideway, the inner side of the movable guide sleeve is connected with the tensioning wheel support through a threaded rod on the tensioning wheel support, and the movable guide sleeve is locked by a nut after the relative position of the tensioning wheel support and the movable guide sleeve is adjusted. The tensioning wheel assembly is arranged on the right side of the tensioning wheel bracket and can rotate on the tensioning wheel bracket; the movable guide sleeve, the tensioning wheel support and the tensioning wheel assembly are assembled together to serve as movable parts, and the movable parts can move axially along the fixed slide way together.
One end of the threaded rod is fixed on the threaded rod fixing plate and plays a role in supporting and limiting the spring guide sleeve and the tensioning spring, and the other end of the threaded rod penetrates through the tensioning wheel support so as to limit the rotation of the tensioning wheel support; the tensioning spring is arranged on the threaded rod, one end of the tensioning spring is in contact with the tensioning wheel bracket, the tensioning wheel bracket is welded with the guide sleeve to play a role in stabilizing the spring and protecting the threaded rod, and the other end of the tensioning spring is in contact with the spring guide sleeve; the spring guide sleeve plays a role in stabilizing the tensioning spring and protecting the threaded rod, so that the tensioning spring is not in contact with the threaded rod in the working engineering, and the threaded rod is prevented from being abraded.
In the working movement process, the position of the tensioning wheel assembly is relatively fixed due to the limitation of the reel chain assembly, the distance between the spring guide sleeve and the tensioning wheel support is controlled by adjusting the position of the tensioning spring nut, so that the pre-tightening force of the tensioning spring is controlled, the tensioning spring nut is locked after the pre-tightening force of the tensioning spring meets the requirement, the reel chain assembly is guaranteed to bear reasonable pre-tightening force all the time in the operation process, and a better working state is achieved.
The chain wheel is arranged on the left side of the reel chain support, the chain tensioning device is arranged on the right side of the reel chain support, the chain wheel and the reel chain support are assembled on the cutting table body, the relative positions of the assembled chain wheel and the reel chain support are fixed, the chain wheel can rotate, the reel chain assembly is assembled on the chain wheel and the reel chain support, and the reel chain assembly can work stably under the action of the chain tensioning device.
Furthermore, the inner hole of the fixed slideway is circular, an oil groove is formed in the inner side of the fixed slideway, an oil cup is arranged on the outer side of the fixed slideway, and lubricating oil can be injected into the oil groove in the inner side of the fixed slideway through the oil cup, so that the movable guide sleeve can be lubricated in the movable manner in the fixed slideway.
Furthermore, an oil groove is formed on the movable guide sleeve.
Furthermore, a sealing plate is welded at the rear end of the fixed slideway, a gap is formed between the sealing plate and an inner hole of the fixed slideway, and the sealing plate plays a role in sealing and prevents dust from entering the slideway to pollute lubricating oil; the gap between the sealing plate and the inner hole of the fixed slideway has an exhaust function, and the movable guide sleeve reduces resistance when the inner hole of the fixed slideway moves.
Furthermore, be equipped with the fixed plate of fixed take-up pulley on the take-up pulley support for support take-up pulley subassembly, make the take-up pulley subassembly can rotate at fixed position.
Furthermore, the threaded rod is assembled, and the length of the threaded rod can be lengthened or shortened as required.
Furthermore, the movable guide sleeve is of a half-thread structure, the machining amount is reduced under the condition that the threads are guaranteed to have the matched length, a gap is milled close to the end of the nut, the movable guide sleeve is conveniently clamped by a wrench, and the movable guide sleeve is prevented from rotating when the nut is locked.
Has the advantages that:
1. the utility model provides a tensioning problem of dialling standing grain chain subassembly can increase the tensioning stroke in limited space, reduces the frequency of chain maintenance.
2. The utility model discloses a two pressure spring tensioning modes, spring symmetrical arrangement make the take-up pulley support atress even, have reduced the frictional force of activity guide pin bushing, and reducing wear, stable in structure, the direction is reliable, and the chain uses the extension back simultaneously, through the relative position of adjustment activity guide pin bushing and take-up pulley support, can guarantee the contact length of activity guide pin bushing and fixed slide, has increased the adjustment range of take-up pulley subassembly, has guaranteed the reliability of dialling standing grain chain subassembly operation simultaneously.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a front view of the structure of the present invention;
FIG. 3 is an exploded view of the structure of the present invention;
FIG. 4 is a schematic structural view of the chain tensioner of the present invention;
as shown in the figure: the device comprises a chain wheel 1, a reel chain support 2, a reel chain component 3, a chain tensioning device 4, a threaded rod fixing plate 5, a threaded rod 6, a tensioning wheel component 7, a tensioning wheel support 8, a tensioning spring 9, a movable guide sleeve 10, a fixed slideway 11, a sealing plate 12, a nut 13 and an oil cup 14.
Detailed Description
In order to make the technical problem, technical solution and advantageous effects solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to further explain the present invention in detail. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
The utility model provides a chain overspeed device tensioner includes tensioning spring 9, the spring guide pin bushing, threaded rod 6, take-up pulley subassembly 7, take-up pulley support 8, activity guide pin bushing 10, fixed slide 11, threaded rod fixed plate 5, the screw rod on the take-up pulley support 8 assembles on activity guide pin bushing 10, activity guide pin bushing 10 front side is equipped with nut 13, length change in the reel chain subassembly course of working, the relative position of take-up pulley support 8 and activity guide pin bushing 10 is adjusted to the length of the screw rod screw in activity guide pin bushing 10 on the accessible adjustment take-up pulley support 8, it has great cooperation length to make activity guide pin bushing 10 and fixed slide 11, thereby play better direction effect.
The chain tensioning device 4 is of a symmetrical structure, the fixed slide way 11 is welded or assembled on the reel chain support 2, and the threaded rod fixing plate 5 is symmetrically welded on the fixed slide way 11.
The outer side of the movable guide sleeve 10 is arranged in a fixed slideway 11, the inner side of the movable guide sleeve 10 is connected with a tension wheel bracket 8 through a threaded rod on the tension wheel bracket 8, and the movable guide sleeve 10 is locked by a nut 13 after the relative positions of the tension wheel bracket 8 and the movable guide sleeve 10 are adjusted; the tensioning wheel assembly 7 is arranged on the right side of the tensioning wheel support 8, and the tensioning wheel assembly 7 can rotate on the tensioning wheel support 8; the movable guide sleeve 10, the tension wheel bracket 8 and the tension wheel assembly 7 are assembled together to be used as movable parts, and the movable parts can move axially along the fixed slideway 11 together.
One end of the threaded rod 6 is fixed on the threaded rod fixing plate 5 and plays a role in supporting and limiting the spring guide sleeve and the tensioning spring 9, and the other end of the threaded rod 6 penetrates through the tensioning wheel bracket 8 so as to limit the rotation of the tensioning wheel bracket 8; the tensioning spring 9 is arranged on the threaded rod 6, one end of the tensioning spring 9 is in contact with the tensioning wheel support 8, a guide sleeve is welded on the tensioning wheel support 8 to play a role in stabilizing the spring and protecting the threaded rod 6, and the other end of the tensioning spring 9 is in contact with the spring guide sleeve; the spring guide sleeve plays a role in stabilizing the tensioning spring 9 and protecting the threaded rod 6, so that the tensioning spring 9 is not in contact with the threaded rod 6 in the working process, and the threaded rod 6 is prevented from being abraded.
In the working movement process, the position of the tensioning wheel component 7 is relatively fixed due to the limitation of the reel chain component 3, the distance between the spring guide sleeve and the tensioning wheel support 8 is controlled by adjusting the position of the tensioning spring nut, so that the pretightening force of the tensioning spring 9 is controlled, and the nut 13 is locked after the pretightening force of the tensioning spring 9 meets the requirement, so that the reel chain component 3 is ensured to bear reasonable pretightening force all the time in the operation process, and a better working state is achieved.
The chain wheel 1 is arranged on the left side of the reel chain support 2, the chain tensioning device 4 is arranged on the right side of the reel chain support 2, the chain wheel 1 and the reel chain support 2 are assembled on the header body, the relative positions of the assembled chain wheel 1 and the reel chain support 2 are fixed, the chain wheel 1 can rotate, the reel chain assembly 3 is assembled on the chain wheel 1 and the reel chain support 2, and the reel chain assembly 3 can work stably under the action of the chain tensioning device 4.
The inner hole of the fixed slideway 11 is round, the inner side of the fixed slideway is provided with an oil groove, the outer side of the fixed slideway is provided with an oil cup 14, and lubricating oil can be injected into the oil groove at the inner side through the oil cup 14, so that the movable guide sleeve 10 can be lubricated movably in the fixed slideway 11.
A sealing plate 12 is welded at the rear end of the fixed slideway 11, a gap is arranged between the sealing plate 12 and an inner hole of the fixed slideway 11, and the sealing plate 12 plays a role in sealing to prevent dust from entering the slideway and polluting lubricating oil; the gap between the sealing plate 12 and the inner hole of the fixed slideway 11 has an exhaust function, and the movable guide sleeve 10 reduces resistance when the inner hole of the fixed slideway 11 moves.
The tensioning wheel support 8 is provided with a fixing plate for fixing the tensioning wheel, and the fixing plate is used for supporting the tensioning wheel component, so that the tensioning wheel component can rotate at a fixed position.
The threaded rod 6 is of an assembled type, and the length of the threaded rod 6 can be lengthened or shortened as required.
The movable guide sleeve 10 is of a half-thread structure, the machining amount is reduced under the condition that the threads are guaranteed to have the matched length, a notch is milled at the end close to the nut 13, the movable guide sleeve 10 is conveniently clamped by a wrench, and the movable guide sleeve 10 is prevented from rotating when the nut 13 is locked.
When an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on or indirectly connected to the other element, or when an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.
The terms of orientation such as left, right, up, down, etc. in the present embodiment are only relative concepts or reference to the normal use state of the product, and should not be considered as limiting.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (8)
1. A chain tensioner, characterized by: the chain tensioning device is of a symmetrical structure, and the fixed slideway is welded or assembled on the reel chain support;
the outer side of the movable guide sleeve is arranged in the fixed slideway, and the inner side of the movable guide sleeve is connected with the tension wheel bracket through a screw rod on the tension wheel bracket;
one end of the threaded rod is fixed on the threaded rod fixing plate, and the other end of the threaded rod penetrates through the tension wheel bracket; the tensioning spring is arranged on the threaded rod, one end of the tensioning spring is in contact with the tensioning wheel support, the tensioning wheel support is welded with the guide sleeve, and the other end of the tensioning spring is in contact with the spring guide sleeve.
2. A chain tensioner according to claim 1, wherein: the threaded rod fixing plates are symmetrically welded on the fixed slide ways.
3. A chain tensioner according to claim 1, wherein: the inner hole of the fixed slideway is circular, an oil groove is formed in the inner side of the fixed slideway, and an oil cup is arranged on the outer side of the fixed slideway.
4. A chain tensioner according to claim 1, wherein: an oil groove is formed in the movable guide sleeve.
5. A chain tensioner according to claim 1, wherein: the rear end of the fixed slideway is welded with a sealing plate, and a gap is arranged between the sealing plate and an inner hole of the fixed slideway.
6. A chain tensioner according to claim 1, wherein: and the tensioning wheel support is provided with a fixing plate for fixing the tensioning wheel.
7. A chain tensioner according to claim 1, wherein: the threaded rod is assembled.
8. A chain tensioner according to claim 1, wherein: the front side of the movable guide sleeve is provided with a nut, the movable guide sleeve is of a half-thread structure, and a notch is milled at the end close to the nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020857937.1U CN212402458U (en) | 2020-05-21 | 2020-05-21 | Chain tensioning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020857937.1U CN212402458U (en) | 2020-05-21 | 2020-05-21 | Chain tensioning device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212402458U true CN212402458U (en) | 2021-01-26 |
Family
ID=74402354
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020857937.1U Active CN212402458U (en) | 2020-05-21 | 2020-05-21 | Chain tensioning device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212402458U (en) |
-
2020
- 2020-05-21 CN CN202020857937.1U patent/CN212402458U/en active Active
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