CN201137681Y - Chain tensioning compensation apparatus - Google Patents
Chain tensioning compensation apparatus Download PDFInfo
- Publication number
- CN201137681Y CN201137681Y CNU2007200863459U CN200720086345U CN201137681Y CN 201137681 Y CN201137681 Y CN 201137681Y CN U2007200863459 U CNU2007200863459 U CN U2007200863459U CN 200720086345 U CN200720086345 U CN 200720086345U CN 201137681 Y CN201137681 Y CN 201137681Y
- Authority
- CN
- China
- Prior art keywords
- chain
- pull rod
- spring
- pull
- guide bushing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
Abstract
The utility model relates to a chain tensioning apparatus, which particularly relates to a chain tensioning compensating unit of a horizontal directional driller pull-push device. The chain tensioning compensating unit comprises a pull rod whose front end is provided with outer screw threads, a locking female screw, a spring, two guide bushing and a chassis, wherein the pull rod passes through the chassis, the locking female screw is mounted on the front end of the pull rod and is connected with the screw threads of the pull rod, one ends of the guide bushing are provided with round tubes with steps, the two guide bushing are mutually symmetrically sleeved on the pull rod and are mounted between the locking female screw and the chassis, and the spring is mounted between the round tubes of the steps of the two guide bushing. The chain tensioning apparatus can automatically compensate the elongated quantity of the chain in a certain range, and greatly reduces the adjusting frequency to the tension of a chain, and leads the chain to be in an excellent tensioning state all the time.
Description
Technical field:
The utility model relates to a kind of chain stretching device, particularly a kind of chain tension compensation device of horizontal directional drilling machine unit head push-and-pull device.
Background technique:
Adopt the drill power head push-and-pull device (oil cylinder or motor driven) of chain transmission, can be in the use along with the loosening sagging of chain appears in the wearing and tearing of chain hinge pin and the lengthening deformation of chain.If the loosening sagging adjustment of in time not carrying out rate of tension has again appearred in chain, chain can not transmit power effectively, and working efficiency reduces, and also can cause chain wear even take off serious accident such as chain interruption.At present, when chain occurs when loosening, adopt adjusting nut to realize adjustment usually to the chain tension degree, and in the practical application of rig, because the carelessness of maintaining and frequent the loaded down with trivial details of tensioning of adjusting often are difficult to remain chain and are in tensioning state.
The model utility content:
The technical problems to be solved in the utility model is: provide a kind of and can be within the specific limits the amount of elongation of chain be compensated automatically, significantly reduced the adjustment frequency of chain tension and make chain be in the chain tension compensation device of good tensioning state all the time, to overcome above-mentioned the deficiencies in the prior art part.
The technological scheme that solves the problems of the technologies described above is: a kind of chain tension compensation device, comprise that front end has externally threaded pull bar, locking nut, spring, two guide sleeves and base, pull bar passes base, locking nut is installed in the pull bar front end, and be connected with pull rod screw, described guide sleeve is the pipe that an end has step, and two guide sleeves are opposed mutually to be sleeved on the pull bar symmetrically, be installed between locking nut and the base, and spring is installed on two pipes between the guide sleeve step.
The chain tension compensation device of the utility model is on the adjusting nut that usually adopts is realized basis to chain tension, increase a locking nut and two guide sleeves, by locking nut spring being carried out precompressed contracts two guide sleeves is in contact with one another, when to a certain degree elongating in use appears in chain, the chain of pulling unit head is in tension, and another root chain sagging trend occurs owing to not affording load, two guide sleeves will open under the effect of spring force this moment, thus pushing drawing rod and strain chain to avoid chain to occur sagging.Thereby, have and can be within the specific limits the amount of elongation of chain be compensated automatically, significantly reduced the adjustment frequency of chain tension and make chain be in the beneficial effect of good tensioning state all the time.
Below, the technical characteristics to the chain tension compensation device of the utility model is further described in conjunction with the accompanying drawings and embodiments.
Description of drawings:
Fig. 1: the utility model chain tension compensation apparatus structure schematic representation (the A portion enlarged view of Fig. 2);
Fig. 2: the drill power head push-and-pull device structural representation that has adopted the utility model chain tension compensation device.
Among the figure:
The 1-pull bar, 2-locking nut, 3-guide sleeve, 4-spring, 5-base, 6-hinge wheel, 7-unit head, 8-chain tension compensation device, 9-oil cylinder, 10
1, 10
2-chain, 11-minor sprocket, 12-chain end connector.
Embodiment:
A kind of chain tension compensation device, comprise that front end has externally threaded pull bar 1, two locking nuts 2, guide sleeve 3, spring 4 and bases 5, pull bar 1 passes base 5, two locking nuts 2 are installed in pull bar 1 front end successively and are connected with pull rod screw, described guide sleeve 3 is the pipe that an end has step, two guide sleeves are opposed mutually to be sleeved on the pull bar symmetrically, be installed between locking nut 2 and the base 5, and helical spring 4 is installed on two pipes between guide sleeve 3 steps.
As a kind of conversion of the utility model embodiment, can adopt other elastic members without helical spring, for example be installed between two guide sleeve 3 steps by one group of belleville spring.
Below, adopting the horizontal drill push-and-pull device of oil cylinder-chain push-pull fashion with unit head is example explanation the utility model chain tension compensation Unit Installation and working principle.
Fig. 2 represents a kind of horizontal drill unit head push-and-pull device that the utility model chain tension compensation device is installed, and comprises that two hinge wheels 6, two are connected to each other together minor sprocket 11 by the chain wheel fork, surround the board-like chain 10 in the large and small sprocket groove
1, 10
2, the push-and-pull drive unit of fixedlying connected---oil cylinder 9 with the chain wheel fork, the two ends of unit head 7 respectively with chain 10
1, 10
2An end link to each other two chains 10
1, 10
2The other end by chain end connector 12 respectively be fixed on frame on chain tension compensation device 8 fixedly connected, described chain tension compensation device is the above-mentioned chain tension compensation device of the utility model.
When two chains 10
1, 10
2When being in good tensioning state, two guide sleeves 3 remain contact condition, chain 10
1, 10
2Suffered pulling force acts on the base 5 by pull bar 1, locking nut 2 and two guide sleeves 3 being in contact with one another.When chain 10
1, 10
2When in use occurring to a certain degree elongating, a chain of pulling unit head 7 is in tension, and another root chain sagging trend occurs owing to not affording load, two guide sleeves 3 will open under the effect of spring 4 power this moment, thus pushing drawing rod 1 and strain this chain to avoid chain to occur sagging.
The utility model chain tension compensation device also be applicable to unit head adopt motor-chain push-pull fashion the horizontal drill push-and-pull device.
Claims (1)
1, a kind of chain tension compensation device, it is characterized in that: this device comprises that front end has externally threaded pull bar, locking nut, spring, two guide sleeves and base, pull bar passes base, locking nut is installed in the pull bar front end, and be connected with pull rod screw, described guide sleeve is the pipe that an end has step, and two guide sleeves are opposed mutually to be sleeved on the pull bar symmetrically, be installed between locking nut and the base, and spring is installed on two pipes between the guide sleeve step.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200863459U CN201137681Y (en) | 2007-08-01 | 2007-08-01 | Chain tensioning compensation apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200863459U CN201137681Y (en) | 2007-08-01 | 2007-08-01 | Chain tensioning compensation apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201137681Y true CN201137681Y (en) | 2008-10-22 |
Family
ID=40038368
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200863459U Expired - Fee Related CN201137681Y (en) | 2007-08-01 | 2007-08-01 | Chain tensioning compensation apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201137681Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102278081A (en) * | 2011-07-11 | 2011-12-14 | 无锡金帆钻凿设备有限公司 | Tensioning and early warning mechanism of feeding plate-type chain in drilling machine |
| CN106628864A (en) * | 2016-12-23 | 2017-05-10 | 广东成功自动化设备有限公司 | Puller driven frame |
-
2007
- 2007-08-01 CN CNU2007200863459U patent/CN201137681Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102278081A (en) * | 2011-07-11 | 2011-12-14 | 无锡金帆钻凿设备有限公司 | Tensioning and early warning mechanism of feeding plate-type chain in drilling machine |
| CN106628864A (en) * | 2016-12-23 | 2017-05-10 | 广东成功自动化设备有限公司 | Puller driven frame |
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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: 20081022 Termination date: 20160801 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |