CN201791807U - Chain tensioning device for section rolling and bending machine - Google Patents
Chain tensioning device for section rolling and bending machine Download PDFInfo
- Publication number
- CN201791807U CN201791807U CN2010205450647U CN201020545064U CN201791807U CN 201791807 U CN201791807 U CN 201791807U CN 2010205450647 U CN2010205450647 U CN 2010205450647U CN 201020545064 U CN201020545064 U CN 201020545064U CN 201791807 U CN201791807 U CN 201791807U
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- axle
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Abstract
The utility model relates to a chain tensioning device for a section rolling and bending machine. According to the technical field provided by the utility model, a base is arranged below the bed body of the rolling and bending machine; a hole is arranged below the base; a composite sleeve is arranged in the hole; fork racks are symmetrically arranged on the left side and the right side of the composite sleeve; mandrils are arranged at the head parts of the fork racks; and a bearing and a tensioning chain wheel are arranged on each mandril. The fork racks are arranged on the composite sleeve through shafts at the tail parts. A compression spring is arranged between the shafts at the tails of the left fork rack and the right fork rack. The utility model has the advantages of smaller stress, long service life and small occupied space; and tight sides can be converted (i.e. the chain wheel can rotate positively and negatively).
Description
Technical field
The utility model relates to a kind of tensioning apparatus, and especially a kind of section bar coiling machine chain stretching device belongs to the stress metal manufacture field.
Background technology
Transmission system has been used roller chain transmission device in the section bar coiling machine.Consider that from equipment operation, use angle machine spindle vertically need be placed, promptly two sprocket wheel axis and ground are in vertical state.But it is parallel to the ground that generally, roller chain drives requires two sprocket wheel axis.As vertical installation, can be because of the self gravitation effect, chain virtual condition 13 relative chain perfect conditions 14 occur sagging.The lighter causes chain releasing, and is heavy then damage sprocket wheel, chain, causes the device damage accident.For solving this contradiction, chain stretching device need be set.But chain stretching device commonly used, the roller chain drives operating mode as eccentric adjusting type, screw regulating type, spring adjustable type, when hanging heavy adjustable type etc. and can not be applicable to fully all that coiling machine is vertical and put.The main problem that has three aspects: the one, the tension force when above-mentioned chain stretching device will bear whole chain drive, and the chain drive tension force of coiling machine is very big, needs a very big base like this, and also sprocket wheel, chain wear are violent.The 2nd, above-mentioned chain stretching device generally only is applicable to unidirectional transmission, and the chain drive of coiling machine is frequent forward and reverse transmission.The 3rd, installing space is little in the section bar coiling machine lathe bed casing, the installation difficulty of above-mentioned chain stretching device.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, provide a kind of stressed less, the life-span is long, the convertible section bar coiling machine of edge slack chain stretching device.
According to the technical scheme that the utility model provides, mounting seat below the coiling machine lathe bed is provided with the hole below base, compound cover is installed in the hole, compound cover be symmetrical set crotch, at the head of crotch axle is installed, on axle, be provided with bearing and tightener sprocket.
Described crotch is installed in compound putting by the axle of afterbody.Between the axle of left and right sides crotch afterbody, be provided with the compression spring.
Advantage of the present utility model: stressed less, the life-span is long, edge slack convertible (but being the sprocket wheel rotating), take up room little.
Description of drawings
Fig. 1 is the vertical transmission schematic diagram of chain in the prior art.
Fig. 2 is a structural representation of the present utility model.
Fig. 3 is a user mode schematic diagram of the present utility model.
The specific embodiment
The utility model is described in further detail below in conjunction with concrete accompanying drawing.
Shown in Fig. 2 ~ 3: section bar coiling machine chain stretching device comprises base 1, compound cover 2, compression spring 3, crotch 4, tightener sprocket 5, bearing 6, axle 7, coiling machine lathe bed 8, axle 9, hinge wheel 10, minor sprocket 11, driving chain 12 etc.
The utility model is mounting seat 1 below coiling machine lathe bed 8, below base 1 hole is set, and compound cover 2 is installed in the hole, compound cover 2 be symmetrical set crotch 4, at the head of crotch 4 axle 7 is installed, on axle 7, be provided with bearing 6 and tightener sprocket 5;
Described crotch 4 is installed on the compound cover 2 by the axle 9 of afterbody; Between the axle 9 of left and right sides crotch 4 afterbodys, be provided with compression spring 3.
The course of work of the present utility model: tensioning apparatus described in the utility model is put between the driving chain 12 between hinge wheel 10 and the minor sprocket 11, guaranteed that the axis of base 1 is parallel with the axis of minor sprocket 11 with hinge wheel 10, debug then.Move forward and backward tensioning apparatus during the horizontal direction debugging, when making compression spring 3 pretensions, and when making the end face of left and right sides crotch 4 afterbodys and gap between the compound cover 2 equating, (be 2.5mm, this gap body is 5-8mm during compression spring 3 free states), vertical direction guarantees that tightener sprocket 5 and driving chain 12 on same plane, get final product firm banking 1, finishes debugging.
In the duty, when the left side of driving chain 12 was the tension side, left and right side crotch 4 all moved right; When the right side of driving chain was the tension side, left and right side crotch 4 was all to moving to left.Like this, no matter hinge wheel 10 and minor sprocket 11 are just changeing counter-rotating, 5 effects of spring 3 pretightning forces by compression of two tightener sprockets, and irrelevant with driving chain 12 transmission tension force size.And that compression spring 3 pretightning forces are compared with driving chain 12 tension force is very little, only below 0.1%, so the life-span of tightener sprocket 5, bearing 6 can improve greatly.To base 1, only bear each assembly parts weight, therefore can do very lightly.To driving chain 12, do not make stressed significantly increase because increase tensioning apparatus, when the chain transmission fluffs chain because of long-time use parts depreciation, compression spring 3 can stretch out the pretightning force that keeps suitable automatically, save the trouble of artificial debugging, reduced user's maintenance workload.
Claims (3)
1. section bar coiling machine chain stretching device, it is characterized in that: in the below mounting seat (1) of coiling machine lathe bed (8), in base (1) below the hole is set, compound cover (2) is installed in the hole, compound cover (2) be symmetrical set crotch (4), head at crotch (4) is equipped with axle (7), is provided with bearing (6) and tightener sprocket (5) on axle (7).
2. section bar coiling machine chain stretching device as claimed in claim 1 is characterized in that: described crotch (4) is installed on the compound cover (2) by the axle (9) of afterbody.
3. section bar coiling machine chain stretching device as claimed in claim 2 is characterized in that: be provided with compression spring (3) between the axle (9) of left and right sides crotch (4) afterbody.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205450647U CN201791807U (en) | 2010-09-28 | 2010-09-28 | Chain tensioning device for section rolling and bending machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205450647U CN201791807U (en) | 2010-09-28 | 2010-09-28 | Chain tensioning device for section rolling and bending machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201791807U true CN201791807U (en) | 2011-04-13 |
Family
ID=43846728
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205450647U Expired - Fee Related CN201791807U (en) | 2010-09-28 | 2010-09-28 | Chain tensioning device for section rolling and bending machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201791807U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101941030A (en) * | 2010-09-28 | 2011-01-12 | 无锡洲翔重工科技有限公司 | Chain tensioning device of section bending machine |
-
2010
- 2010-09-28 CN CN2010205450647U patent/CN201791807U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101941030A (en) * | 2010-09-28 | 2011-01-12 | 无锡洲翔重工科技有限公司 | Chain tensioning device of section bending machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110413 Termination date: 20150928 |
|
| EXPY | Termination of patent right or utility model |