CN214731973U - Tensioning device for transmission chain of rotating arm - Google Patents
Tensioning device for transmission chain of rotating arm Download PDFInfo
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- CN214731973U CN214731973U CN202023133005.1U CN202023133005U CN214731973U CN 214731973 U CN214731973 U CN 214731973U CN 202023133005 U CN202023133005 U CN 202023133005U CN 214731973 U CN214731973 U CN 214731973U
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- driven shaft
- hole
- swinging boom
- eccentric
- driven
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Abstract
A tensioning device for a transmission chain of a rotating arm belongs to the technical field of mechanical transmission devices and is used for tensioning adjustment of the transmission chain of the rotating arm. The technical scheme is as follows: the two ends of the rotating arm support are respectively provided with a driving shaft and a driven shaft, the driving shaft and the driven shaft are respectively connected with a driving chain wheel and a driven chain wheel, a transmission chain is arranged between the driving chain wheel and the driven chain wheel, the upper part of the driven shaft is connected with one end of the rotating arm support through a bearing and an eccentric sleeve, the lower part of the driven shaft is connected with a V-shaped material supporting arm through a fixing sleeve, the upper part of the driven shaft is connected with a bearing inner ring in a matching way, a bearing outer ring is assembled in the eccentric sleeve, the eccentric sleeve is arranged in a driven shaft hole at one end of the rotating arm support, and the eccentric sleeve and the driven shaft hole are in locking matching with each other in an adjustable and rotating way. The utility model discloses can carry out the tensioning fine setting, and simple structure, locking are reliable, the adjustment is convenient, can carry out the tensioning adjustment to drive chain, keep the drive chain transmission synchronous, realize that the V type holds in the palm the steady material state of expecting the arm.
Description
Technical Field
The utility model relates to a tensioning adjusting device that is used for the narrow swinging boom drive chain who needs again to parallel axis adjustment distance of spatial structure belongs to mechanical transmission device technical field.
Background art:
the tension device is a commonly used holding device on a belt and chain transmission system, and is characterized in that the belt and a chain can be kept to have proper tension in the transmission process, so that the belt is prevented from slipping, or the chain is prevented from jumping and falling off and dragging out, or the chain is prevented from loosening and falling off, and the abrasion of a chain wheel and the chain is reduced. The tensioning device has various structures, and generally comprises a fixed structure and an elastic automatic adjusting structure, wherein the fixed structure adopts fixed adjustment to adjust the tensioning of a belt and a chain wheel. Generally, a top thread type and a lever type are adopted. However, in some places, the space structure is narrow, the distance of the parallel shafts needs to be adjusted, and the conventional tensioning device is inconvenient to use and needs to be improved.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a swinging boom drive chain's overspeed device tensioner is provided, this kind of overspeed device tensioner can carry out the tensioning adjustment to swinging boom drive chain in the constrictive position in space, and simple structure, adjustment sensitivity, locking are reliable.
The technical scheme for solving the technical problems is as follows:
the utility model provides a swinging boom drive chain's overspeed device tensioner, driving shaft and driven shaft are installed respectively to swinging boom support's both ends, driving shaft and driven shaft are connected with drive sprocket and driven sprocket respectively, install drive chain between drive sprocket and the driven sprocket, its improvement is, the upper portion of driven shaft is connected with swinging boom support's one end through bearing and eccentric cover, the lower part of driven shaft is connected with V type support material arm through fixed cover, the upper portion and the bearing inner circle cooperation of driven shaft are connected, the assembly of bearing outer lane is in eccentric cover, eccentric cover is installed in the driven shaft hole of swinging boom support one end, eccentric cover and driven shaft hole are adjustable pivoted locking cooperation.
Above-mentioned swinging boom drive chain's overspeed device tensioner, the driven shaft hole of swinging boom support one end comprises two half holes, half hole is located the support terminal surface of swinging boom support one end, half hole of another is located the driven shaft hole gland of swinging boom support one end, half hole on the driven shaft hole gland is relative with half hole on the swinging boom support terminal surface, eccentric cover is placed in the driven shaft hole that two half holes are relative to be constituteed, connecting bolt is with driven shaft hole gland and swinging boom support terminal surface fixed connection, half hole of driven shaft hole gland is with eccentric cover pressure fastening fixed.
According to the tensioning device for the rotating arm transmission chain, the outer side wall of the eccentric sleeve is provided with the adjusting hole, the axial direction of the adjusting hole is perpendicular to the outer wall of the eccentric sleeve, the adjusting hole is located on one side of the large diameter of the eccentric sleeve, and the adjusting holes are distributed at intervals around the circumference of the outer wall of the eccentric sleeve.
The utility model has the advantages that:
the utility model discloses be two sections with the axle sleeve decomposition of driven shaft, driven shaft upper portion is connected with the one end of swinging boom support through bearing and eccentric cover, and the driven shaft lower part is connected with V type support arm through fixed cover, and the driven shaft can reach the purpose of the drive chain between tensioning driving sprocket and the driven sprocket through the distance between eccentric cover adjustment and the driving shaft like this.
The utility model discloses can carry out the tensioning fine setting, and simple structure, locking are reliable, the adjustment is convenient, manufacturing cost is low, can carry out the tensioning adjustment to drive chain in the constrictive position in space, and it is synchronous strictly to keep the drive chain transmission, and the tooth phenomenon of jumping can not appear, realizes that the V type holds in the palm the steady material state of expecting the arm.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a bottom view of FIG. 1;
FIG. 3 is a plan view of a swivel arm support;
FIG. 4 is a top view of the eccentric sleeve;
fig. 5 is a sectional view a-a of fig. 4.
The figures are labeled as follows: the device comprises a rotating arm support 1, a driving shaft 2, a driving chain wheel 3, a driven shaft 4, a driven chain wheel 5, a transmission chain 6, a bearing 7, an eccentric sleeve 8, a fixed sleeve 9, a V-shaped material supporting arm 10, a driving shaft hole 11, a driven shaft hole 12, a driving shaft hole gland 13, a driven shaft hole gland 14, a connecting bolt 15 and an adjusting hole 16.
Detailed Description
The utility model discloses hold in the palm material arm 10 by swinging boom support 1, driving shaft 2, driving sprocket 3, driven shaft 4, driven sprocket 5, drive chain 6, bearing 7, eccentric cover 8, fixed cover 9, V type and constitute.
Fig. 1, 2 and 3 show that a driving shaft 2 is arranged at one end of a rotating arm support 1. The mounting structure is that, there is driving shaft hole 11 in the one end of swinging boom support 1, and driving shaft hole 11 comprises two half holes respectively, and half hole of one is located the support terminal surface of swinging boom support 1 one end, and half hole of another is located driving shaft hole gland 13, and half hole of driving shaft hole gland 13 is relative with half hole on the 1 terminal surface of swinging boom support, and connecting bolt 15 is with driving shaft hole gland 13 and 1 terminal surface fixed connection of swinging boom support, constitutes complete shaft hole. The driving shaft 2 is placed in the driving shaft hole 13, the driving shaft 2 and the rotating arm support 1 are pressed and fixed by a half hole of the driving shaft hole pressing cover 13, and the driving shaft 2 drives the rotating arm support 1 to rotate when rotating.
Fig. 1, 2 and 3 show that the upper part of the driven shaft 4 is connected with the rotating arm support 1, the lower part of the driven shaft 4 is connected with the V-shaped material supporting arm 10, and the driven shaft 4 drives the V-shaped material supporting arm 10 to rotate together with the rotation of the rotating arm support 1.
Fig. 1, 2 and 3 show that the connection structure of the upper part of the driven shaft 4 and the rotating arm support 1 is similar to the connection structure of the driving shaft 2 and the rotating arm support 1, but an eccentric sleeve 8 is added in the shaft hole 12 of the driven shaft. Its structure is, driven shaft hole 12 comprises two half holes respectively, half hole is located the support terminal surface of 1 one end of swinging boom support, another half hole is located driven shaft hole gland 14, half hole and the swinging boom support 1 terminal surface of driven shaft hole gland 14 are relative, eccentric cover 8 is placed in the driven shaft hole 12 that two half holes are relative constituteed, connecting bolt 15 compresses tightly eccentric cover 8 with driven shaft hole gland 14 and swinging boom support 1 terminal surface fixed connection, half hole of driven shaft hole gland 14 is fixed, driven shaft 4 is placed in eccentric cover 8, driven shaft 4 can rotate in eccentric cover 8.
Fig. 1 and 2 show that the driving sprocket 3 and the driving shaft 2 are fixedly connected through a key, the driven sprocket 5 and the driven shaft 4 are welded together, the driving chain 6 is installed between the driving sprocket 3 and the driven sprocket 5, the driving shaft 2 drives the driven sprocket 5 to rotate through the driving chain 6 when rotating, the driven sprocket 5 drives the driven shaft 4 to rotate, and the driven shaft 4 further drives the V-shaped material supporting arm 10 to rotate around the driving shaft 4 as the center of a circle.
Fig. 1, 2, 4, 5 show that the eccentric sleeve 8 is installed in the driven shaft hole 12 at one end of the rotating arm support 1, the center of the inner hole of the eccentric sleeve 8 is offset from the central hole of the eccentric sleeve 8, the bearing 7 is installed in the inner hole of the eccentric sleeve 8, the outer ring of the bearing is connected with the inner hole wall of the eccentric sleeve 8 in a matching manner, the inner ring of the bearing is connected with the upper part of the driven shaft 4 in a matching manner, the driven shaft 4 can rotate in the inner hole of the eccentric sleeve 8, the distance between the driven shaft 4 and the driving shaft 2 can be adjusted by rotating the eccentric sleeve 8, so that the tension of the transmission chain 6 is adjusted, the adjustment range is between the center of the inner hole of the eccentric sleeve 8 and the offset of the central hole of the eccentric sleeve 8, and the offset of the inner hole of the eccentric sleeve 8 and the central hole of the eccentric sleeve 8 is 5-25 mm.
Fig. 1, 2, 4 and 5 show that the outer side wall of the eccentric sleeve 8 is provided with an adjusting hole 16, the axial direction of the adjusting hole 16 is vertical to the outer wall of the eccentric sleeve 8, the adjusting hole 16 is positioned on the large-diameter side of the eccentric sleeve 8, and a plurality of adjusting holes 16 are distributed at intervals around the circumference of the outer wall of the eccentric sleeve. When the eccentric sleeve 8 is adjusted, the shift lever is inserted into the adjusting hole 16 and rotated along the circumferential direction of the eccentric sleeve 8, so that the eccentric sleeve 8 can be rotated.
The utility model discloses a use method as follows:
when the rotary arm normally works, the driving shaft 2 is positioned in the driving shaft hole 13, the driving shaft hole gland 13 compresses and fixes the driving shaft 2 and the rotary arm support 1, and the driving shaft 2 drives the rotary arm support 1 to rotate when rotating; the driving shaft 2 drives the driven sprocket 5 to rotate through the driving sprocket 3 and the transmission chain 6; the driven sprocket 5 drives the driven shaft 4 to rotate. At this time, the V-shaped material supporting arm 10 installed at the lower part of the driven shaft 4 is driven by the rotating arm support 1 to rotate along with the driven shaft 4, and the V-shaped material supporting arm 10 is driven by the driven shaft 4 to rotate around the driven shaft 4, so that the material supporting action of the V-shaped material supporting arm 10 is realized.
In order to keep the flat supporting state of the V-shaped material supporting arm 10, the transmission chain 6 needs to be strictly and synchronously transmitted, and the phenomenon of tooth jumping cannot occur. If the drive chain 6 is found slack, a tensioning operation of the drive chain 6 is required. And (3) loosening the connecting bolt 15 for fixing the driven shaft hole gland 14, taking down the driven shaft hole gland 14 from the outer side of the eccentric sleeve 8, rotating the eccentric sleeve 8 by using a deflector rod, and changing the center distance between the driving shaft 2 and the driven shaft 4 so as to adjust the tension degree of the transmission chain 6. After the suspension degree of the transmission chain 6 meets the requirement, the driven shaft hole gland 14 is placed, the connecting bolt 15 is screwed, and the driven shaft hole gland 14 and the eccentric sleeve 8 are pressed and fixed to complete the tension degree adjustment of the transmission chain 6.
The utility model discloses an embodiment as follows:
the length of the rotating arm bracket 1 is 715mm, and the width is 60 mm;
the diameter of the driving shaft 2 is 130 mm;
the diameter of the driven shaft 4 is 65 mm;
the model number of the bearing 7 is 60213;
the outer diameter of the eccentric sleeve 8 is 130mm, the diameter of the inner hole is 105mm, and the distance between the center of the eccentric sleeve and the center of the inner hole is 5 mm;
the number of the adjusting holes 16 of the eccentric sleeve 8 is four, and the diameter of each adjusting hole 16 is 12 mm;
the diameter of the connecting bolt 15 is M24x100 mm.
Claims (3)
1. The utility model provides a swinging boom drive chain's overspeed device tensioner, driving shaft (2) and driven shaft (4) are installed respectively to the both ends of swinging boom support (1), and driving shaft (2) and driven shaft (4) are connected with driving sprocket (3) and driven sprocket (5) respectively, install drive chain (6), its characterized in that between driving sprocket (3) and driven sprocket (5): the upper portion of driven shaft (4) is connected with the one end of swinging boom support (1) through bearing (7) and eccentric cover (8), the lower part of driven shaft (4) is connected with V type support material arm (10) through fixed cover (9), the upper portion and the bearing inner race cooperation of driven shaft (4) are connected, the bearing outer lane assembly is in eccentric cover (8), install in swinging boom support (1) one end driven shaft hole (12) eccentric cover (8), eccentric cover (8) and driven shaft hole (12) are adjustable pivoted locking cooperation.
2. Tensioner for a rotating arm drive chain according to claim 1, characterized in that: the driven shaft hole (12) of swinging boom support (1) one end comprises two half holes, half hole is located the support terminal surface of swinging boom support (1) one end, another half hole is located driven shaft hole gland (14) of swinging boom support (1) one end, half hole and the swinging boom support terminal surface of driven shaft hole gland (14) on half hole is relative, place in driven shaft hole (12) that two half holes are relative to be constituteed eccentric cover (8), connecting bolt (15) compress tightly eccentric cover (8) with driven shaft hole gland (14) and swinging boom support terminal surface fixed connection, half hole of driven shaft hole gland (14) is fixed with eccentric cover (8).
3. Tensioner for a rotating arm drive chain according to claim 1, characterized in that: the outer side wall of the eccentric sleeve (8) is provided with an adjusting hole (16), the axial direction of the adjusting hole (16) is perpendicular to the outer wall of the eccentric sleeve (8), the adjusting hole (16) is located on one side of the large diameter of the eccentric sleeve (8), and the adjusting holes (16) are distributed at intervals around the circumference of the outer wall of the eccentric sleeve (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023133005.1U CN214731973U (en) | 2020-12-23 | 2020-12-23 | Tensioning device for transmission chain of rotating arm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023133005.1U CN214731973U (en) | 2020-12-23 | 2020-12-23 | Tensioning device for transmission chain of rotating arm |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214731973U true CN214731973U (en) | 2021-11-16 |
Family
ID=78633696
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023133005.1U Active CN214731973U (en) | 2020-12-23 | 2020-12-23 | Tensioning device for transmission chain of rotating arm |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214731973U (en) |
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2020
- 2020-12-23 CN CN202023133005.1U patent/CN214731973U/en active Active
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