CN201703449U - Track tensioning device - Google Patents
Track tensioning device Download PDFInfo
- Publication number
- CN201703449U CN201703449U CN2010201913086U CN201020191308U CN201703449U CN 201703449 U CN201703449 U CN 201703449U CN 2010201913086 U CN2010201913086 U CN 2010201913086U CN 201020191308 U CN201020191308 U CN 201020191308U CN 201703449 U CN201703449 U CN 201703449U
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- CN
- China
- Prior art keywords
- cylinder body
- hole
- pull bar
- bearing
- push rod
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- 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 - Lifetime
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Abstract
The utility model discloses a track tensioning device. The tensioning device comprises a cylinder body, wherein a stepped shaft is arranged outside the cylinder body; a stepped through-hole is formed in the cylinder body; a stepped pull rod is mounted at one end of the through-hole; one section of the stepped pull rod is matched with the stepped through hole; a T-shaped ejector rod is mounted at the other end of the through-hole; an oil feeding valve is mounted on the side surface of an end of the T-shaped ejector rod, and the end of the T-shaped ejector rod extends out of the cylinder body; the fuel feeding valve is communicated with the through-hole through an oil filling hole formed in the ejector rod; a spring is sleeved on the outer wall of the cylinder body; a support with one end propped against the steps of the stepped shaft and the other end pressed against the end surface of the support is mounted on the section of the pull rod extending out of the cylinder body; the support is used for being connected with a guide wheel on a tensioning track; and the end of the section of the ejector rod, which extends out of the cylinder body, is used for being connected with a chassis limiting plate in a tracked machine. The track tensioning device is applied to tracked hydraulic excavators, loop wheel machines and other traveling gears; and when a track is impacted in the traveling, the change of impact force enables the spring to stretch or retract continually, therefore, the track tensioning device plays a buffering role.
Description
Technical field
The utility model relates to track takeup, particularly relates to the track takeup of the traveling gear of construction machinery and equipments such as excavating machine, is mainly used between the positioning plate on the guide wheel of traxcavator and chassis.
Background technology
Track unit has good characteristics such as tractive force is big, grounding pressure is low, hill climbing ability is strong, turn radius is little, thereby be widely used in fields such as construction machinery and equipment, mining machinery, vehicle for constructions, track unit particularly obtains general application in big-and-middle-sized self-propelled machinery, as machineries such as trench cutting machine, excavating machine, piling machinery, rigs.And track takeup has very big influence to the crawler travel performance.In the prior art, the main method of tensioned tracks comprises tensioned method, oil cylinder tension method, screw rod tension method.Wherein if adopt the tensioned method, owing between the elastic force of spring and its scantling of structure certain proportionate relationship is arranged, spring undersized, its elastic force is not enough to crawler belt is remained on slack-free state, spring oversize is so be subjected to the restriction of crawler belt physical construction to be difficult for installing and using.And adopt oil cylinder and screw rod tension method, and because the good rigidly of oil cylinder and screw rod is not yielding, when crawler belt was subjected to impulsive force, crawler belt can not keep its in tension at any time, its slack-free effect will be had a strong impact on.Therefore, be necessary the structure of existing track takeup is improved.
The utility model content
The purpose of this utility model is to overcome defective of the prior art, designs a kind of track takeup.This device can guarantee suitable track tensioning force constantly; When track adjusting wheel was subjected to the impact load in the place ahead, the recoil spring retraction prevented that to absorb vibration crawler belt and drive wheel are damaged.
For achieving the above object, the technical solution of the utility model is to adopt a kind of track takeup, it is characterized in that, this device includes cylinder body, the outside of described cylinder body is the stepped shaft shape, the inside of described cylinder body is stair-stepping through hole, end at described through hole is equipped with stepped pull bar, in the described stepped pull bar one section matches with described stair-stepping through hole, the other end at described through hole is equipped with T shape push rod, in the side that described T shape push rod stretches out cylinder body one end fuel feeding valve is housed, described fuel feeding valve is connected with described through hole by the oil hole that is arranged in the described push rod, is set with spring on described outer wall of cylinder block, and described pull bar is equipped with bearing stretching out on the described cylinder body section, one end roof pressure of described spring is on the step of described cylinder body outer step axle, and other end roof pressure is on the end face of described bearing; Described bearing is used to connect the guide wheel on the tensioned tracks, and the end that described push rod stretches out the cylinder body section is used for connecting the chassis positioning plate of caterpillar machinery.
In order to prevent that foreign matters such as dust from entering the inside of cylinder body, simultaneously also in order to improve the resistance to abrasion between cylinder body and the piston, the utility model is equipped with flow ring on the inwall section of cooperation of described push rod and described cylinder body, in a side of described flow ring seal ring, support ring and dust ring are housed.
Installation for the ease of parts such as seal rings, the utility model is respectively equipped with annular groove at the two ends of described inboard wall of cylinder block, dust ring, support ring, O RunddichtringO are housed in described annular groove, described dust ring, support ring, O RunddichtringO cooperate with described push rod, and another described O RunddichtringO cooperates with described pull bar.
For the ease of stretching of spring, the utility model is provided with through hole in described bearing, bearing fit between described through hole and the described pull bar.
In order to prevent to bump between bearing and the cylinder body, pull bar described in the utility model is set with stop collar between described cylinder body and described bearing.
In the utility model, described pull bar is equipped with nut in the end of stretching out cylinder part, and described nut is used for the side of described bearing retaining at described pull bar.
In order to prevent that nut from getting loose in vibrations are jolted, the utility model is equipped with jam plate at described pull bar with the end that described nut is connected, and described jam plate is connected with the end of described pull bar by bolt, spring washer.
For the ease of installing and fixing of bearing, in the utility model, described bearing is the U-shaped shape, is provided with two even ears symmetrically on the base of described U-shaped shape bearing, is provided with the hole that is used to connect guide wheel in described the company on the ear.
For rigidity and the intensity that strengthens bearing, the utility model is provided with reinforced rib between the sidewall of described even ear and described U-shaped shape bearing.
Be filled with butter in the cavity in the cylinder body of the utility model between described push rod and described pull bar, described butter is used to regulate described push rod and stretches out the exterior length of described cylinder body.
Advantage of the present utility model and beneficial effect are: this track takeup is used for running gears such as crawler hypraulic excavator, loop wheel machine, this tightening device is pressed into butter in the cylinder body by grease compressor grease, make the pull bar roof pressure of an end of cylinder body move guide wheel, be sleeved on the outer compression spring of cylinder body, make crawler belt obtain certain pre-tensioning, run in crawler belt is expert at fortune when impacting, the variation of impulsive force makes spring constantly stretch or contract, thereby plays the effect of buffering.The utlity model has simple in structure, reliable operation, can improve stationarity in travelling, and reequip characteristics easily.
Description of drawings
Fig. 1 is the profile front view of the utility model track takeup;
Fig. 2 is the cutaway view of Fig. 1;
Fig. 3 is the lateral plan of Fig. 1.
Among the figure: 1, cylinder body; 2, through hole; 3, pull bar; 4, push rod; 5, fuel feeding valve; 6, oil hole; 7, spring; 8, bearing; 9, step; 10, end face; 11, flow ring; 12, seal ring; 13, support ring; 14, dust ring; 15, annular groove; 16, O RunddichtringO; 17, through hole; 18, stop collar; 19, nut; 20, jam plate; 21, bolt; 22, spring washer; 23, connect ear; 24, the hole that connects guide wheel; 25, reinforced rib.
The specific embodiment
Below in conjunction with drawings and Examples, the specific embodiment of the present utility model is further described.Following examples only are used for the technical solution of the utility model more clearly is described, and can not limit protection domain of the present utility model with this.
Shown in accompanying drawing 1 to 3, the concrete technical scheme of implementing of the utility model is:
A kind of track takeup, this device includes cylinder body 1, the outside of described cylinder body 1 is the stepped shaft shape, the inside of described cylinder body is stair-stepping through hole 2, end at described through hole is equipped with stepped pull bar 3, in the described stepped pull bar 3 one section matches with described stair-stepping through hole 2, the other end at described through hole 2 is equipped with T shape push rod 4, in the side that described T shape push rod 4 stretches out cylinder body 1 one ends fuel feeding valve 5 is housed, described fuel feeding valve 5 is connected with described through hole 2 by the oil hole 6 that is arranged in the described push rod 4, on described cylinder body 1 outer wall, be set with spring 7, described pull bar 3 is equipped with bearing 8 stretching out on 1 section of the described cylinder body, one end roof pressure of described spring 7 is on the step 9 of described cylinder body 1 outer step axle, and other end roof pressure is on the end face 10 of described bearing 8; Described bearing 8 is used to connect the guide wheel on the tensioned tracks, and the end that described push rod stretches out the cylinder body section is used for connecting the chassis positioning plate of caterpillar machinery.
Embodiment 2
On the basis of the foregoing description 1, in order to prevent that foreign matters such as dust from entering the inside of cylinder body 1, simultaneously also in order to improve the resistance to abrasion between cylinder body 1 and the push rod 4, the utility model is equipped with flow ring 11 on the inwall section of cooperation of described push rod 4 and described cylinder body 1, in a side of described flow ring 11 seal ring 12, support ring 13 and dust ring 14 are housed.Installation for the ease of seal ring 14 parts such as grade, the utility model is respectively equipped with 4 annular grooves 15 at the two ends of described cylinder body 1 inwall, dust ring 14, support ring 13, O RunddichtringO 16 are housed in described annular groove 15 successively, described dust ring 14, support ring 13, O RunddichtringO 16 cooperate with described push rod 4 respectively, another described O RunddichtringO 16 cooperates with described pull bar 3, and all the other structures and embodiment 1 are identical.
Embodiment 3
On the basis of the foregoing description 2, for the ease of stretching of spring 7, the utility model is provided with through hole 17 in described bearing 8, bearing fit between described through hole 17 and the described pull bar 3.Bump between bearing and the cylinder body in order to prevent simultaneously, pull bar 3 described in the utility model is set with stop collar 18 between described cylinder body 1 and described bearing 8, and all the other structures and embodiment 2 are identical.
On the basis of the foregoing description 3, pull bar 3 described in the utility model is equipped with nut 19 in the end of stretching out cylinder body 1 part, and described nut 19 is used for the side of described bearing 8 retainings at described pull bar 3.In order to prevent that nut 19 from getting loose in vibrations are jolted, the utility model is equipped with jam plate 20 at described pull bar 3 with the end that described nut 18 is connected, described jam plate 20 is connected with the end of described pull bar 3 by bolt 21, spring washer 22, and all the other structures and embodiment 3 are identical.
Embodiment 5
On the foregoing description 1 basis, for the ease of installing and fixing of bearing 8, in the utility model, described bearing 8 is designed to U-shaped, be provided with two even ears 23 symmetrically on the base of described U-shaped bearing 8, be provided with the hole 24 that is used to connect guide wheel in described the company on the ear 23.For rigidity and the intensity that strengthens bearing, the utility model is provided with reinforced rib 25 between the sidewall of described even ear 23 and described U-shaped bearing 8, and all the other structures and embodiment 1 are identical.
Embodiment 6
On the basis of the foregoing description 1, be filled with butter in the cavity in the cylinder body 1 of the utility model between described push rod 4 and described pull bar 3, described butter is used to regulate described push rod 4 and stretches out described cylinder body 1 exterior length, and all the other structures and embodiment 1 are identical.
The utility model track tensioning force that just can suitably guarantee like this, when track adjusting wheel was subjected to the impact load in the place ahead, the recoil spring retraction prevented that to absorb vibration crawler belt and drive wheel from damaging.This tightening device is pressed into butter in the cavity of cylinder body by grease compressor grease, make an end of pull bar move guide wheel, one end compression spring, make spring obtain certain pre-tensioning, in crawler belt is expert at fortune, run into when impacting, the variation of impulsive force makes spring constantly stretch or contract, thereby plays the effect of buffering.This tightening device has simple in structure, reliable operation, can improve stationarity in travelling, and reequips characteristics easily.
The above only is a preferred implementation of the present utility model; should be understood that; for those skilled in the art; under the prerequisite that does not break away from the utility model know-why; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (10)
1. track takeup, it is characterized in that, this device includes cylinder body, the outside of described cylinder body is the stepped shaft shape, the inside of described cylinder body is stair-stepping through hole, end at described through hole is equipped with stepped pull bar, in the described stepped pull bar one section matches with described stair-stepping through hole, the other end at described through hole is equipped with T shape push rod, in the side that described T shape push rod stretches out cylinder body one end fuel feeding valve is housed, described fuel feeding valve is connected with described through hole by the oil hole that is arranged in the described push rod, on described outer wall of cylinder block, be set with spring, described pull bar is equipped with bearing stretching out on the described cylinder body section, and an end roof pressure of described spring is on the step of described cylinder body outer step axle, and other end roof pressure is on the end face of described bearing; Described bearing is used to connect the guide wheel on the tensioned tracks, and the end that described push rod stretches out the cylinder body section is used for connecting the chassis positioning plate of caterpillar machinery.
2. track takeup as claimed in claim 1 is characterized in that, on the inwall section of cooperation of described push rod and described cylinder body flow ring is housed, and in a side of described flow ring seal ring, support ring and dust ring is housed.
3. track takeup as claimed in claim 2, it is characterized in that, two ends at described inboard wall of cylinder block are respectively equipped with annular groove, dust ring, support ring, O RunddichtringO are housed in described annular groove, described dust ring, support ring, O RunddichtringO cooperate with described push rod, and another described O RunddichtringO cooperates with described pull bar.
4. track takeup as claimed in claim 3 is characterized in that, is provided with through hole in described bearing, bearing fit between described through hole and the described pull bar.
5. track takeup as claimed in claim 4 is characterized in that, described pull bar is set with stop collar between described cylinder body and described bearing.
6. track takeup as claimed in claim 5 is characterized in that described pull bar is equipped with nut in the end of stretching out cylinder part, and described nut is used for the side of described bearing retaining at described pull bar.
7. track takeup as claimed in claim 6 is characterized in that, with the end that described nut is connected jam plate is housed at described pull bar, and described jam plate is connected with the end of described pull bar by bolt, spring washer.
8. track takeup as claimed in claim 1 is characterized in that, described bearing is the U-shaped shape, is provided with two even ears symmetrically on the base of described U-shaped shape bearing, is provided with the hole that is used to connect guide wheel in described the company on the ear.
9. track takeup as claimed in claim 8 is characterized in that, is provided with reinforced rib between the sidewall of described even ear and described U-shaped shape bearing.
10. track takeup as claimed in claim 1 is characterized in that, is filled with butter in the cavity in the cylinder body between described push rod and described pull bar, and described butter is used to regulate described push rod and stretches out the exterior length of described cylinder body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201913086U CN201703449U (en) | 2010-05-17 | 2010-05-17 | Track tensioning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201913086U CN201703449U (en) | 2010-05-17 | 2010-05-17 | Track tensioning device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201703449U true CN201703449U (en) | 2011-01-12 |
Family
ID=43440602
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201913086U Expired - Lifetime CN201703449U (en) | 2010-05-17 | 2010-05-17 | Track tensioning device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201703449U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102183426A (en) * | 2011-03-22 | 2011-09-14 | 三一重机有限公司 | Novel method for testing durability of track tensioning device of hydraulic excavator |
| CN104477239A (en) * | 2014-12-26 | 2015-04-01 | 中国北方车辆研究所 | Steering link stroke protection device of tracked vehicle |
| CN105332990A (en) * | 2015-11-30 | 2016-02-17 | 玉林市川迪机器制造有限公司 | Pull rod of tensioning device of excavator |
| CN107010132A (en) * | 2016-11-30 | 2017-08-04 | 泰兴市红枫机械有限公司 | A kind of swelling device |
-
2010
- 2010-05-17 CN CN2010201913086U patent/CN201703449U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102183426A (en) * | 2011-03-22 | 2011-09-14 | 三一重机有限公司 | Novel method for testing durability of track tensioning device of hydraulic excavator |
| CN102183426B (en) * | 2011-03-22 | 2012-11-07 | 三一重机有限公司 | Novel method for testing durability of track tensioning device of hydraulic excavator |
| CN104477239A (en) * | 2014-12-26 | 2015-04-01 | 中国北方车辆研究所 | Steering link stroke protection device of tracked vehicle |
| CN104477239B (en) * | 2014-12-26 | 2017-01-11 | 中国北方车辆研究所 | Steering link stroke protection device of tracked vehicle |
| CN105332990A (en) * | 2015-11-30 | 2016-02-17 | 玉林市川迪机器制造有限公司 | Pull rod of tensioning device of excavator |
| CN107010132A (en) * | 2016-11-30 | 2017-08-04 | 泰兴市红枫机械有限公司 | A kind of swelling device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 214400 Yun Ting Road 885, Yun Ting Street, Jiangyin, Wuxi, Jiangsu Patentee after: Jiangsu Changling hydraulic Limited by Share Ltd Address before: 214423 1, Dayuan Li Road, Jiangyin, Jiangsu. Patentee before: Jiangyin Changling Machinery Manufacturing Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110112 |