CN203078630U - Excavator track tensioning cylinder - Google Patents

Excavator track tensioning cylinder Download PDF

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Publication number
CN203078630U
CN203078630U CN 201220746028 CN201220746028U CN203078630U CN 203078630 U CN203078630 U CN 203078630U CN 201220746028 CN201220746028 CN 201220746028 CN 201220746028 U CN201220746028 U CN 201220746028U CN 203078630 U CN203078630 U CN 203078630U
Authority
CN
China
Prior art keywords
cylinder
pull rod
pull bar
linkage
bore
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
Application number
CN 201220746028
Other languages
Chinese (zh)
Inventor
王丹兵
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
QUANZHOU QUANYONG MACHINERY DEVELOPMENT Co Ltd
Original Assignee
QUANZHOU QUANYONG MACHINERY DEVELOPMENT Co Ltd
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 QUANZHOU QUANYONG MACHINERY DEVELOPMENT Co Ltd filed Critical QUANZHOU QUANYONG MACHINERY DEVELOPMENT Co Ltd
Priority to CN 201220746028 priority Critical patent/CN203078630U/en
Application granted granted Critical
Publication of CN203078630U publication Critical patent/CN203078630U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

Provided is an excavator track tensioning cylinder. The excavator track tensioning cylinder comprises an oil cylinder body, a piston rod movably arranged in the cylinder body, a pull rod and a spring, wherein the one end of the pull rod is connected with the cylinder body in a detachable mode, the other end of the pull rod is provided with a connection base, and the spring is tensioned between the connection base and the cylinder body. A connection hole communicated along the axial direction of the cylinder body is formed in a closed end of the cylinder body, a connection section arranged in the connection hole in a penetrating mode is formed at the one end of the pull rod, the connection section of the pull rod is provided with a limiting portion placed in the cylinder body and a screw section placed outside the cylinder body, and the screw section is matched with a locknut. The pull rod and the cylinder body are connected in a detachable mode, a person only needs to replace the pull rod after the pull rod is damaged, the cylinder body does not need to be replaced, and therefore compared with the prior art, the excavator track tensioning cylinder greatly saves repair and maintenance cost.

Description

A kind of excavating machine crawler tensioning cylinder
Technical field
The utility model relates to the excavating machine track unit, relates in particular to a kind of excavating machine crawler tensioning cylinder.
Background technology
Known, track unit is strong to the adaptive capacity of landform, it is big to have tractive force, grounding pressure is low, advantages such as hill climbing ability is strong, therefore be widely used in excavating machine, in the large-scale engineering machineries such as bulldozer, wherein, the crawler tensioning cylinder has a significant impact the walking performance tool of track unit, the crawler tensioning cylinder is by cylinder body, be movably set in the piston rod in the cylinder body, one end be connected with cylinder body the other end be provided with the pull bar of Connection Block and be tensioned to Connection Block and cylinder body between spring form, in the course of the work, pull bar damages easily, service life is short, and existing pull bar and cylinder body are formed in one, then need change together with cylinder body after pull bar damages, cost is high.
Summary of the invention
The purpose of this utility model is at the deficiencies in the prior art, and a kind of simple in structure, maintenance and the low excavating machine crawler tensioning cylinder of maintenance cost are provided.
The purpose of this utility model realizes by following technical solution:
A kind of excavating machine crawler tensioning cylinder comprises cylinder block, is movably set in the piston rod in the cylinder body, it is characterized in that: also comprise an end and cylinder body removably connect the other end be provided with the pull bar of Connection Block and be tensioned to Connection Block and cylinder body between spring.
Further, the closed end of described cylinder body is formed with the connecting bore that axially connects along it, described pull bar one end is formed with the linkage section that is arranged in the described connecting bore, the linkage section of described pull bar is formed with the limiting section that is positioned at cylinder interior and is positioned at the exterior spiro rod section of cylinder body, is combined with jam nut on the described spiro rod section.
Further, be provided with seal ring between the hole wall of the linkage section of described pull bar and described connecting bore.
Further, be arranged with packing ring between jam nut and cylinder body on the described spiro rod section.
The utlity model has following beneficial effect:
Pull bar and cylinder body are removably connected, and damaging the back at pull bar only needs the replacing pull bar to get final product, and need not to change cylinder body, and compared with prior art, the utility model has been saved the maintenance and the maintenance cost of tensioning cylinder greatly; Pull bar removably connects by the spiro rod section on the linkage section, limiting section and jam nut and cylinder body, only needs during assembling that pull bar is passed connecting bore and then jam nut locking is got final product, and has advantages such as simple in structure, easy accessibility; Between the hole wall of the linkage section of pull bar and connecting bore, be provided with seal ring, can prevent the hydraulic fluid leak of cylinder interior, guarantee the leak tightness of oil cylinder.
Description of drawings
Below in conjunction with accompanying drawing the utility model is described in further detail.
Fig. 1 is a structural representation of the present utility model.
The specific embodiment
With reference to shown in Figure 1, a kind of excavating machine crawler tensioning cylinder, comprise cylinder block 1, be movably set in piston rod 2, an end and cylinder body 1 in the cylinder body 1 removably connect the other end be connected with the pull bar 3 of Connection Block 7 by nut 8 and be tensioned to Connection Block 7 and cylinder body 1 between spring 9.
Piston rod 2 is a cylinder, piston rod 2 front ends are provided with seal ring 6, piston rod 2 inside are formed with along its axially extended oil circuit 21, the oil inlet end of oil circuit 21 is provided with oil passage control valve 22, cylinder body 1 is a cylinder, be formed with the shoulder block 12 that matches with spring 9 on it, the closed end of cylinder body 1 is formed with the connecting bore 11 that axially connects along it, pull bar 3 one ends are formed with the linkage section 31 that is arranged in the connecting bore 11, the linkage section 31 of pull bar 3 is formed with and is positioned at cylinder body 1 in-to-in limiting section 311 and is positioned at cylinder body 1 exterior spiro rod section 312, be combined with jam nut 4 and packing ring (not shown) on the spiro rod section 312, be provided with seal ring 5 between the linkage section 31 of pull bar 3 and the hole wall of connecting bore 11.
The above, it only is preferred embodiment of the present utility model, so can not limit the scope that the utility model is implemented with this, i.e. the equivalence of doing according to the utility model claim and description changes and modifies, and all should still belong in the scope that the utility model patent contains.

Claims (4)

1. an excavating machine crawler tensioning cylinder comprises cylinder block, is movably set in the piston rod in the cylinder body, it is characterized in that: also comprise an end and cylinder body removably connect the other end be provided with the pull bar of Connection Block and be tensioned to Connection Block and cylinder body between spring.
2. a kind of excavating machine crawler tensioning cylinder according to claim 1, it is characterized in that: the closed end of described cylinder body is formed with the connecting bore that axially connects along it, described pull bar one end is formed with the linkage section that is arranged in the described connecting bore, the linkage section of described pull bar is formed with the limiting section that is positioned at cylinder interior and is positioned at the exterior spiro rod section of cylinder body, is combined with jam nut on the described spiro rod section.
3. a kind of excavating machine crawler tensioning cylinder according to claim 2 is characterized in that: be provided with seal ring between the linkage section of described pull bar and the hole wall of described connecting bore.
4. according to claim 2 or 3 described a kind of excavating machine crawler tensioning cylinders, it is characterized in that: be arranged with the packing ring between jam nut and cylinder body on the described spiro rod section.
CN 201220746028 2012-12-31 2012-12-31 Excavator track tensioning cylinder Expired - Fee Related CN203078630U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201220746028 CN203078630U (en) 2012-12-31 2012-12-31 Excavator track tensioning cylinder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201220746028 CN203078630U (en) 2012-12-31 2012-12-31 Excavator track tensioning cylinder

Publications (1)

Publication Number Publication Date
CN203078630U true CN203078630U (en) 2013-07-24

Family

ID=48824491

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201220746028 Expired - Fee Related CN203078630U (en) 2012-12-31 2012-12-31 Excavator track tensioning cylinder

Country Status (1)

Country Link
CN (1) CN203078630U (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104015824A (en) * 2014-05-30 2014-09-03 天津柳工机械有限公司 Integrated tension device and crawler-type walking machine with same
CN104015823A (en) * 2014-05-30 2014-09-03 天津柳工机械有限公司 Pull rod and expanding device with pull rod
CN104527827A (en) * 2014-12-31 2015-04-22 中联重机股份有限公司 Caterpillar band tensioning device for track vehicle and track vehicle
CN106945737A (en) * 2017-03-16 2017-07-14 国机重工(常州)挖掘机有限公司 Caterpillar system automatic tension device
CN108556940A (en) * 2018-03-21 2018-09-21 江苏长龄液压股份有限公司 A kind of Caterpillar belt tightening device of expanding force automatic adjustment

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104015824A (en) * 2014-05-30 2014-09-03 天津柳工机械有限公司 Integrated tension device and crawler-type walking machine with same
CN104015823A (en) * 2014-05-30 2014-09-03 天津柳工机械有限公司 Pull rod and expanding device with pull rod
CN104527827A (en) * 2014-12-31 2015-04-22 中联重机股份有限公司 Caterpillar band tensioning device for track vehicle and track vehicle
CN106945737A (en) * 2017-03-16 2017-07-14 国机重工(常州)挖掘机有限公司 Caterpillar system automatic tension device
CN108556940A (en) * 2018-03-21 2018-09-21 江苏长龄液压股份有限公司 A kind of Caterpillar belt tightening device of expanding force automatic adjustment

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Legal Events

Date Code Title Description
GR01 Patent grant
C14 Grant of patent or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20130724

Termination date: 20181231

CF01 Termination of patent right due to non-payment of annual fee