CN108556940A - A kind of Caterpillar belt tightening device of expanding force automatic adjustment - Google Patents

A kind of Caterpillar belt tightening device of expanding force automatic adjustment Download PDF

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Publication number
CN108556940A
CN108556940A CN201810234349.XA CN201810234349A CN108556940A CN 108556940 A CN108556940 A CN 108556940A CN 201810234349 A CN201810234349 A CN 201810234349A CN 108556940 A CN108556940 A CN 108556940A
Authority
CN
China
Prior art keywords
cylinder
crotch
pull rod
expanding force
automatic adjustment
Prior art date
Application number
CN201810234349.XA
Other languages
Chinese (zh)
Inventor
夏泽民
周涛
高海波
陶科
缪勤竹
何智烨
Original Assignee
江苏长龄液压股份有限公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 江苏长龄液压股份有限公司 filed Critical 江苏长龄液压股份有限公司
Priority to CN201810234349.XA priority Critical patent/CN108556940A/en
Publication of CN108556940A publication Critical patent/CN108556940A/en

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B62LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62DMOTOR VEHICLES; TRAILERS
    • B62D55/00Endless track vehicles
    • B62D55/08Endless track units; Parts thereof
    • B62D55/30Track-tensioning means

Abstract

The present invention is a kind of Caterpillar belt tightening device of expanding force automatic adjustment,Cylinder body including to be inside multidiameter structure be for outside ladder hole shape,Ladder pull rod is housed in ladder hole,Tee handle bar is housed in the other side of ladder hole,The side of tee handle bar boss portion is equipped with fuel feeding valve,Spring is set on outer wall of cylinder block,Pull rod stretches out cylinder body outboard end and crotch is housed,One end top pressure of spring on the step of cylinder body outer step structure other end top pressure on the step of crotch outer step structure,The end of spring and the step of the hierarchic structure outside cylinder body are equipped with gasket between the step of crotch outer step structure,Pressure sensor is housed on gasket,The side that pull rod stretches out cylinder body is equipped with thread segment,Thread segment and nut piece screw-thread fit,Nut piece also with the output axis connection of servo motor,Servo motor is mounted on by motor cabinet in the stepped hole on crotch,Servo motor is connect with controller respectively with pressure sensor.

Description

A kind of Caterpillar belt tightening device of expanding force automatic adjustment

Technical field

The present invention relates to Caterpillar belt tightening devices, more particularly to the track tensioning of the walking mechanism of the engineering machinery such as excavator Device is mainly used between the guide wheel of crawler-mounted excavator and the limiting plate on chassis.

Background technology

Crawler unit has the excellent spies such as tractive force is big, grounding pressure is low, climbing capacity is strong, turning radius is small Point, thus be widely used in fields such as engineering machinery, mining machinery, building machineries, crawler unit especially exists Universal application, such as ditcher, excavator, piling machinery, drilling machine machinery are obtained in large and medium-sized self-propelled machinery.And crawler belt rises Tight device has a very big impact crawler travel performance.In the prior art, the main method of tension track includes that spring rises Tight method, oil cylinder tensioner method, screw rod tensioner method.Wherein according to spring swelling method, due to spring elastic force and its structure size it Between have certain proportionate relationship, spring it is undersized, elastic force is not enough to for crawler belt to be maintained at the state of tensioner, the ruler of spring Very little excessive, the limitation of risen crawler belt mechanical structure is not easy to install and use.In addition spring can reduce it in the state of long-term accept Elasticity.And oil cylinder and screw rod tensioner method are used, since the rigidity of oil cylinder and screw rod is unlikely to deform well, when crawler belt is by impact force When, crawler belt cannot keep it to be in tensioner state at any time, and the effect of tensioner will be severely impacted.Therefore, it is necessary to right The construction of existing Caterpillar belt tightening device is improved.

Invention content

The purpose of the present invention is to overcome the defects in the prior art, designs a kind of Caterpillar belt tightening device.The device can when When ensure track tensioning power appropriate;When shock loading of the directive wheel by front, buffer spring retraction is prevented with absorbing vibration Only crawler belt and driving wheel are damaged, and after the elastic force of spring reduces or increases, its expanding force can be made to keep not by regulating mechanism Become.

To achieve the above object, the technical scheme is that being filled using a kind of track tensioning of expanding force automatic adjustment It sets, which includes cylinder body, and the outside of the cylinder body is multidiameter structure, and the inside of the cylinder body is ladder hole structure, One end equipped with ladder platform is equipped with the pull rod of hierarchic structure in the ladder hole, the ladder platform portion on the pull rod and the rank Ladder platform position cooperation in terraced through-hole, is equipped with tee handle bar in the other side of the ladder hole, convex in the tee handle bar The side in platform portion is equipped with fuel feeding valve, and the fuel feeding valve passes through the oil filler point being set in the tee handle bar and the ladder hole It is connected, spring is set on the outer wall of cylinder block, the side of the pull rod is stretched out outside cylinder body, and the drawing on the outside of cylinder body is being stretched out Crotch is housed, the crotch is in shell structure, and outside is in shoulder hole structure in multidiameter structure inside, the spring on bar One end top pressure is on the step of cylinder body outer step structure, the platform of the other end top pressure of the spring in crotch outer step structure On rank, one end of the crotch is also connected with the guide wheel for tension track, and the one end in tee handle bar convex platform portion is used Be connected in the chassis limiting plate in caterpillar machinery, the end of the spring and the step of the hierarchic structure outside cylinder body or Gasket is housed between the step of crotch outer step structure, pressure sensor is housed on the gasket, is stretched in the pull rod The side for going out cylinder body is equipped with thread segment, the thread segment and nut piece screw-thread fit, nut piece also with the output shaft of servo motor Connection, servo motor are mounted on by motor cabinet in the stepped hole on crotch, the servo motor and pressure sensor respectively with Controller connects.

In order to avoid tee handle bar is inserted into rapid wear between one end and inboard wall of cylinder block of cylinder interior, and avoid cylinder body Internal lubricating oil leakage comes out, and preferred technical solution is equipped in inner wall cooperation section of the tee handle bar with the cylinder body Wear ring is equipped with sealing ring and baffle ring in one end of the wear ring.

It is come out in order to avoid the lubricating oil leakage of cylinder interior, or external dust enters the inside of cylinder body, it is further excellent The technical solution of choosing fills in the annular groove respectively in addition, be respectively equipped with annular groove at the both ends of the inboard wall of cylinder block There are dustband, O-ring seal, the dustband to coordinate with the tee handle bar, the O-ring seal coordinates with the pull rod.

For the ease of being slidably matched between pull rod and crotch, make axial linear movement of the crotch along pull rod, it is further excellent The technical solution of choosing is matched in addition, being slided equipped with through-hole on the crotch of the shell structure, between the through-hole and the pull rod It closes.

For the ease of being slidably matched between pull rod and crotch, make axial linear movement of the crotch along pull rod, it is further excellent The technical solution of choosing is set with casing in addition, being stretched out between cylinder body side and crotch in the pull rod.

In order to increase the contact area of crotch and connector, keep its connection more firm, and convenient for connection, further preferably Technical solution in addition, the crotch section be U-shaped structure, symmetrically set on the bottom edge of the U-shaped structure crotch there are two Even ear is equipped with the hole for connecting guide wheel on the even ear.

Structure size, the weight of mitigation crotch for the ease of reduction crotch, improve the structural strength of crotch, further excellent The technical solution of choosing described in addition, be even equipped with reinforcing rib between ear and the side wall of the U-shaped structure crotch.

For the ease of adjust tee handle bar stretch out the length outside the cylinder body, further preferred technical solution in addition, Organic oil is filled in the cavity that the tee handle bar is located at one end in cylinder body and pull rod is located between one end in cylinder body, it is described Machine oil is used to adjust the tee handle bar and stretches out length outside the cylinder body.

For the ease of adjusting the spacing between crotch and cylinder body, to achieve the purpose that adjust expanding force, preferred technical side Case is in addition, the nut piece is ut socket structure, the output axis connection that one end of ut socket passes through flange and servo motor.

In order to avoid servo motor frequent starting, make its only adjusted again in the case where the elastic force of spring reduces crotch with Spacing between cylinder body, preferred technical solution in the controller in addition, be equipped with delay circuit.

The advantages of the present invention are:The Caterpillar belt tightening device of expanding force automatic adjustment is used for crawler type liquid It presses the running gears such as excavator, loop wheel machine, the swelling device that butter is pressed into cylinder body by grease gun, makes the pull rod of cylinder body one end Top pressure moves guide wheel, and the compressed spring being sleeved on outside cylinder body makes crawler belt obtain certain pre-tensioning, when crawler belt is expert in fortune When encountering impact, the variation of impact force makes spring constantly stretch or contract, to play the role of buffering.And when the elastic force of spring drops After low, or in the case of needing tension adjusting, it can be rotated by controller control servomotor nut piece, due to nut piece After coordinating with the threaded one end of pull rod, therefore rotated between lowering the curtain, you can change the spacing between crotch and cylinder body, reach adjusting The purpose of expanding force, and the size of expanding force sends controller to after being detected by pressure sensor, controller can lead to It crosses and is compared with the tensioner force threshold of setting, then send out control instruction driving servo motor forward or reverse, make it always It is maintained under the expanding force state of setting and works.The present invention has simple in structure, reliable operation, can improve stationarity in traveling, And the feature that repacking is convenient.

Description of the drawings

Fig. 1 is the shape front view of the Caterpillar belt tightening device of expanding force automatic adjustment of the present invention;

Fig. 2 is the sectional view of Fig. 1;

Fig. 3 is the side view of Fig. 1.

In figure:1, cylinder body;2, ladder hole;3, pull rod;4, tee handle bar;5, fuel feeding valve;6, oil filler point;7, spring;8, it pitches Frame;9, step;10, step;11, gasket;12, pressure sensor;13, nut piece;14, servo motor;15, motor cabinet;16, it controls Device processed;17, wear ring;18, sealing ring;19, baffle ring;20, annular groove;21, dustband;22, O-ring seal;23, through-hole; 24, casing;25, connect ear;26, hole;27, reinforcing rib;28, cavity.

Specific implementation mode

With reference to the accompanying drawings and examples, the specific implementation mode of the present invention is further described.Following embodiment is only For clearly illustrating technical scheme of the present invention, and not intended to limit the protection scope of the present invention.

As shown in attached drawing 1 to 3, the technical solution that the present invention embodies is:

A kind of Caterpillar belt tightening device of expanding force automatic adjustment, the device include cylinder body 1, and the outside of the cylinder body 1 is rank The structure of terraced axis, the inside of the cylinder body are the structure of ladder hole 2, and one end of ladder platform is equipped in the ladder hole 2 Pull rod 3 equipped with hierarchic structure, the ladder platform portion on the pull rod 3 coordinate with the ladder platform position in the ladder hole 2, Tee handle bar 4 is housed in the other side of the ladder hole 2, fuel feeding valve 5, institute are housed in the side of 4 boss portion of the tee handle bar It states fuel feeding valve 5 by the oil filler point 6 being set in the tee handle bar 4 to be connected with the ladder hole 2, outside the cylinder body 1 Spring 7 is set on wall, the side of the pull rod 3 is stretched out outside cylinder body 1, and crotch 8 is housed on the pull rod 3 for stretching out 1 outside of cylinder body, The crotch is in shell structure, and external in being in shoulder hole structure inside multidiameter structure, one end top pressure of the spring 7 is in cylinder On the step 9 of 1 outer step structure of body, the other end top pressure of the spring 7 on the step 10 of 8 outer step structure of crotch, One end of the crotch 8 is also connected with the guide wheel for tension track, and the one end in 4 convex platform portion of the tee handle bar is used for It is connected with the chassis limiting plate in caterpillar machinery, the step 9 of the end and the hierarchic structure outside cylinder body 1 of the spring 7 Or gasket 11 is housed between the step 10 of 8 outer step structure of crotch, pressure sensor 12 is housed on the gasket 11, The side that the pull rod 3 stretches out cylinder body is equipped with thread segment, the thread segment and 13 screw-thread fit of nut piece, nut piece 13 also with watch The output axis connection of motor 14 is taken, servo motor 14 is mounted on by motor cabinet 15 in the stepped hole on crotch 8, the servo electricity Machine 14 is connect with controller 16 respectively with pressure sensor 12.

In order to avoid rapid wear between 1 inner wall of one end and cylinder body inside the insertion cylinder body 1 of tee handle bar 4, and avoid cylinder Lubricating oil leakage inside body 1 comes out, and the preferred embodiment of the invention is, in the inner wall of the tee handle bar 4 and the cylinder body 1 Coordinate and wear ring 17 is housed in section, sealing ring 18 and baffle ring 19 are housed in one end of the wear ring 17.

In order to avoid the lubricating oil leakage inside cylinder body 1 comes out, or external dust enters the inside of cylinder body 1, the present invention Further preferred embodiment is recessed in the annular in addition, be respectively equipped with annular groove 20 at the both ends of 1 inner wall of the cylinder body Dustband 21, O-ring seal 22 are respectively provided in slot 20, the dustband 21 coordinates with the tee handle bar 4, the O-shaped sealing Circle 22 coordinates with the pull rod 3.

For the ease of being slidably matched between pull rod 3 and crotch 8, make crotch 8 along the axial linear movement of pull rod 3, this hair Bright further preferred embodiment in addition, on the crotch 8 of the shell structure be equipped with through-hole 23, the through-hole 23 with it is described It is slidably matched between pull rod 3.

For the ease of being slidably matched between pull rod 3 and crotch 8, make crotch 8 along the axial linear movement of pull rod 3, this hair Bright further preferred embodiment is set with casing 24 in addition, being stretched out between 1 side of cylinder body and crotch 8 in the pull rod 3.

In order to increase the contact area of crotch 8 and connector, keep its connection more firm, and convenient for connection, the present invention into One step preferred embodiment in addition, the crotch 8 section be U-shaped structure, it is symmetrical on the bottom edge of the U-shaped structure crotch 8 Ground is set there are two ear 25 is connected, and the hole 26 for connecting guide wheel is equipped on the even ear 25.

For the ease of reducing the structure size of crotch 8, mitigating the weight of crotch 8, the structural strength of crotch 8, this hair are improved Bright further preferred embodiment described in addition, be even equipped with reinforcing rib between ear 25 and the side wall of the U-shaped structure crotch 8 27。

The length outside the cylinder body 1, the further preferred embodiment party of the present invention are stretched out for the ease of adjusting tee handle bar 4 Case in one end that the tee handle bar 4 is located in cylinder body 1 and pull rod 3 in addition, be located in the cavity 28 between one end in cylinder body 1 Organic oil is filled, the machine oil is used to adjust the tee handle bar 4 and stretches out length outside the cylinder body.

For the ease of adjusting the spacing between crotch 8 and cylinder body 1, to achieve the purpose that adjust expanding force, the present invention is preferred Embodiment in addition, the nut piece 13 be ut socket structure, one end of ut socket passes through flange and servo motor 14 Output axis connection.

In order to avoid 14 frequent starting of servo motor, it is made only to adjust fork again in the case where the elastic force of spring 7 reduces Spacing between frame 8 and cylinder body 1, the preferred embodiment of the invention in the controller 15 in addition, be equipped with delay circuit.

The present invention before use, first in 1 built-in O-ring seal 22 of the cylinder body, be then reloaded into pull rod 3, be reloaded into it is anti- Konisphere 21, then the tee handle bar 4 is inserted by wear ring 17, sealing ring 18 and baffle ring 19 successively mounted in one end of tee handle bar 4 In the ladder hole 2 of cylinder body 1, upper fuel feeding valve 5 is connected in the side of tee handle bar 4;In the outer wall Upper gasket 11 and sensing of cylinder body 1 Then device 12, pocketed springs 7 stretch out set in cylinder body section in pull rod 3 and load onto casing, and 4, crotch 8, screw in spiral shell in the end of pull rod 3 Servo motor 14 is passed through the output axis connection of nut piece 13 and servo motor 14 on motor cabinet 15 and crotch by parent part 13 Ladder nose end connects, then again by servo motor 14, pressure sensor 12 by conducting wire and controller 16 together.It again will be described Crotch 8 is connect by connecting the hole 26 of guide wheel with guide wheel.The handle 4 is connected with the chassis limiting plate of caterpillar machinery It connects.

The track tensioning force that the present invention can suitably ensure in this way delays when shock loading of the directive wheel by front Spring retraction is rushed to absorb vibration, prevents crawler belt and driving wheel from damaging.If desired adjusting expanding force is only needed through knob tune Save controller in tensioner force threshold, or after expanding force reduces controller can by pressure sensor, control servomotor, Nut piece and controller automatically adjust expanding force, its expanding force is made to remain unchanged.The swelling device is by grease gun by butter pressure Entering in the cavity of cylinder body, one end of pull rod is made to move guide wheel, one end compressed spring makes spring obtain certain preset tension, When crawler belt, which is expert at, encounters impact in fortune, the variation of impact force makes spring constantly stretch or contract, to play the role of buffering.It should Swelling device has simple in structure, reliable operation, can improve stationarity in traveling, and reequip convenient feature.

The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art For member, without departing from the technical principles of the invention, several improvements and modifications can also be made, these improvements and modifications Also it should be regarded as protection scope of the present invention.

Claims (10)

1. a kind of Caterpillar belt tightening device of expanding force automatic adjustment, which includes cylinder body, and the outside of the cylinder body is multi-diameter shaft The inside of structure, the cylinder body is ladder hole structure, and one end equipped with ladder platform is equipped with ladder knot in the ladder hole The pull rod of structure, the ladder platform portion on the pull rod coordinates with the ladder platform position in the ladder hole, in the ladder hole The other side in tee handle bar is housed, fuel feeding valve is housed in the side of the tee handle bar boss portion, the fuel feeding valve passes through setting It is connected with the ladder hole in the oil filler point in the tee handle bar, spring, the drawing is set on the outer wall of cylinder block The side of bar is stretched out outside cylinder body, and crotch is housed on the pull rod stretched out on the outside of cylinder body, and the crotch is in shell structure, outside be in It is in shoulder hole structure inside multidiameter structure, one end top pressure of the spring is described on the step of cylinder body outer step structure The other end top pressure of spring on the step of crotch outer step structure, one end of the crotch also with drawing for tension track Guide wheel is connected, and the one end in tee handle bar convex platform portion is special for being connected with the chassis limiting plate in caterpillar machinery Sign is, the end of the spring and the step of the hierarchic structure outside cylinder body or between the step of crotch outer step structure Equipped with gasket, pressure sensor is housed on the gasket, the side that cylinder body is stretched out in the pull rod is equipped with thread segment, the spiral shell Line section and nut piece screw-thread fit, also with the output axis connection of servo motor, servo motor is mounted on nut piece by motor cabinet In stepped hole on crotch, the servo motor is connect with controller respectively with pressure sensor.
2. the Caterpillar belt tightening device of expanding force automatic adjustment as described in claim 1, which is characterized in that in the tee handle bar Wear ring is housed in the inner wall cooperation section of the cylinder body, sealing ring and baffle ring are housed in one end of the wear ring.
3. the Caterpillar belt tightening device of expanding force automatic adjustment as claimed in claim 2, which is characterized in that in the inboard wall of cylinder block Both ends be respectively equipped with annular groove, be respectively provided with dustband, O-ring seal in the annular groove, the dustband with The tee handle bar cooperation, the O-ring seal coordinate with the pull rod.
4. the Caterpillar belt tightening device of expanding force automatic adjustment as claimed in claim 3, which is characterized in that in the shell structure Crotch be equipped with through-hole, be slidably matched between the through-hole and the pull rod.
5. the Caterpillar belt tightening device of expanding force automatic adjustment as claimed in claim 4, which is characterized in that stretched out in the pull rod It is set with casing between cylinder body side and crotch.
6. the Caterpillar belt tightening device of expanding force automatic adjustment as described in claim 1, which is characterized in that the section of the crotch For U-shaped structure, symmetrically sets there are two ear is connected on the bottom edge of the U-shaped structure crotch, be equipped on the even ear for connecting The hole of guide wheel.
7. the Caterpillar belt tightening device of expanding force automatic adjustment as claimed in claim 6, which is characterized in that in even ear and the institute It states and is equipped with reinforcing rib between the side wall of U-shaped structure crotch.
8. the Caterpillar belt tightening device of expanding force automatic adjustment as described in claim 1, which is characterized in that in the tee handle bar Organic oil is filled in cavity between one end that one end and pull rod in cylinder body are located in cylinder body, the machine oil is for adjusting The tee handle bar stretches out the length outside the cylinder body.
9. the Caterpillar belt tightening device of expanding force automatic adjustment as described in claim 1, which is characterized in that the nut piece is spiral shell Mother set barrel structure, the output axis connection that one end of ut socket passes through flange and servo motor.
10. the Caterpillar belt tightening device of expanding force automatic adjustment as described in claim 1, which is characterized in that in the controller It is interior to be equipped with delay circuit.
CN201810234349.XA 2018-03-21 2018-03-21 A kind of Caterpillar belt tightening device of expanding force automatic adjustment CN108556940A (en)

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CN201810234349.XA CN108556940A (en) 2018-03-21 2018-03-21 A kind of Caterpillar belt tightening device of expanding force automatic adjustment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810234349.XA CN108556940A (en) 2018-03-21 2018-03-21 A kind of Caterpillar belt tightening device of expanding force automatic adjustment

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Publication Number Publication Date
CN108556940A true CN108556940A (en) 2018-09-21

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0248281A (en) * 1988-08-10 1990-02-19 Handozer Ind Co Ltd Automatic tension variable device of crawler of crawler type vehicle
CN201484527U (en) * 2009-08-03 2010-05-26 江阴市长龄液压机具厂 Caterpillar belt tightening device
CN202383014U (en) * 2011-09-29 2012-08-15 中国矿业大学 Flexible clamping system
CN203078630U (en) * 2012-12-31 2013-07-24 泉州市泉永机械发展有限公司 Excavator track tensioning cylinder
CN203427919U (en) * 2013-05-30 2014-02-12 昆山华恒工程技术中心有限公司 Track walking mechanism

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0248281A (en) * 1988-08-10 1990-02-19 Handozer Ind Co Ltd Automatic tension variable device of crawler of crawler type vehicle
CN201484527U (en) * 2009-08-03 2010-05-26 江阴市长龄液压机具厂 Caterpillar belt tightening device
CN202383014U (en) * 2011-09-29 2012-08-15 中国矿业大学 Flexible clamping system
CN203078630U (en) * 2012-12-31 2013-07-24 泉州市泉永机械发展有限公司 Excavator track tensioning cylinder
CN203427919U (en) * 2013-05-30 2014-02-12 昆山华恒工程技术中心有限公司 Track walking mechanism

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Application publication date: 20180921