CN105197784B - A kind of small tonnage crane and its walking beam and the horizontal wheel apparatus of walking beam - Google Patents
A kind of small tonnage crane and its walking beam and the horizontal wheel apparatus of walking beam Download PDFInfo
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- CN105197784B CN105197784B CN201510643545.9A CN201510643545A CN105197784B CN 105197784 B CN105197784 B CN 105197784B CN 201510643545 A CN201510643545 A CN 201510643545A CN 105197784 B CN105197784 B CN 105197784B
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Abstract
The present invention provides a kind of small tonnage crane and its walking beam and the horizontal wheel apparatus of walking beam, walking beam includes beam body, a left side is installed in beam body, right horizontal wheel apparatus, two horizontal wheel apparatus include horizontal wheels wheel carrier and horizontal wheels respectively, two horizontal wheel apparatus respectively further comprise one or split is installed in horizontal wheels link in the beam body, being provided between horizontal wheels wheel carrier and horizontal wheels link in each horizontal wheel apparatus is used to guide the horizontal wheels wheel carrier moving-adjusting structure that guiding movement is adjusted on horizontal wheels link in left-right direction, be additionally provided between horizontal wheels wheel carrier and horizontal wheels link for when horizontal wheels wheel carrier is moved with horizontal wheels and is adjusted in place by the fixed structure of horizontal wheels wheel carrier and horizontal wheels link fixing assembling.Due to the position of horizontal wheels wheel carrier in the lateral direction can be adjusted by moving-adjusting structure, horizontal wheel apparatus can be adjusted according to reality in real time, it is ensured that normal effective work of horizontal wheel apparatus.
Description
Technical field
The present invention relates to a kind of small tonnage crane and its walking beam and the horizontal wheel apparatus of walking beam.
Background technology
In some specific fields of employment and specific industry, it is desirable to which crane gear needs to assemble horizontal wheels, with specification lifting
The normal operation of equipment, it is to avoid occur gnawing rail phenomenon.Conventional crane gear horizontal wheels own dimensions are than larger, installed in small tonnage
It is very uncoordinated on crane, and weight is larger, installation dimension requires tighter, and dismounting is also more inconvenient.
A kind of the anti-of crane is disclosed in Authorization Notice No. is CN202936106U Chinese utility model patent to gnaw
Rail mechanism, it is mainly respectively mounted a set of horizontal wheels group in two portion of the end carriage of crane, and the horizontal wheels group includes two
Horizontal wheels, two horizontal wheels are assemblied on seat board by bearing arrangement respectively.During assembling, first seat board is fixedly mounted on end carriage,
Further according to crane rail away from actual deviation and crane width deviation, adopt behind the gap for adjusting horizontal wheels and track head
It is welded and fixed with weld seam, weld seam herein is directly to be welded and fixed together the main shaft of bearing arrangement with seat board.But this water
Flat wheel group is due to being directly anchored to end carriage head, if it is more serious to wear and tear in use for some time, it is impossible to which horizontal wheels are filled
Put and be adjusted, can only directly change horizontal wheels or change whole horizontal wheel apparatus, safeguard that replacement cost is higher.
The content of the invention
The present invention provides a kind of horizontal wheel apparatus of crane walking beam, can not to solve horizontal wheels group of the prior art
Adjustment or the difficult technical problem of adjustment；Meanwhile, the present invention also provides a kind of crane using above-mentioned horizontal wheel apparatus and walked
Beam and small tonnage crane.
Crane walking beam provided by the present invention is with the technical scheme of horizontal wheel apparatus：Crane walking beam level
Wheel apparatus, including for the horizontal wheels wheel carrier and rolling assembling on walking beam on horizontal wheels wheel carrier and for rolling top
The horizontal wheels on the side of the left and right sides for the pressure-bearing track for accepting the walking beam are pressed in, horizontal wheel apparatus also includes being used for one
Being provided with or split is installed in the horizontal wheels link on walking beam, between horizontal wheels wheel carrier and horizontal wheels link is used to guide water
The flat wheel wheel carrier moving-adjusting structure that guiding movement is adjusted on horizontal wheels link in left-right direction, horizontal wheels wheel carrier and level
Being additionally provided between wheel link is used for horizontal wheels wheel carrier and level when horizontal wheels wheel carrier is adjusted in place with horizontal wheels movement
Take turns the fixed structure of link fixing assembling.
Described fixed structure includes being used for when horizontal wheels wheel carrier is adjusted in place with horizontal wheels movement by horizontal wheels wheel
Attachment bolt of the frame together with horizontal wheels link fixing assembling, the moving-adjusting structure includes the horizontal wheels wheel carrier
And/or the adjustment elongated hole of inserting corresponding with the attachment bolt that is provided with of hitch and driving horizontal wheels wheel carrier are along right and left
To the adjustment drive mechanism of mobile adjustment, the adjustment drive mechanism is screw adjustment mechanism, and screw adjustment mechanism is included along left and right
One of them in the top pressure bolt of direction extension, the horizontal wheels wheel carrier and horizontal wheels link is described provided with spiral assembling
The adjustment threaded hole of top pressure bolt, another be provided with the top splenium for being used for coordinating with the corresponding end top pressure of top pressure bolt.
Described horizontal wheels wheel carrier include the interior plate that is distributed in left-right direction and outer panel and be arranged on interior outer panel it
Between cause ladder transition plate section of the outer panel in the vertical direction higher than the interior plate, the horizontal wheels rolling assembling is in institute
State at the end position of the remote outer panel of interior plate, what the horizontal wheels wheel carrier was provided with is used for and the attachment bolt
The bolt mounting holes of cooperation are arranged on the outer panel, and the edge projection away from the interior plate of the outer panel is oriented
The flange of upper extension, the horizontal wheels wheel carrier is provided with described adjustment threaded hole, and adjustment threaded hole is arranged on the flange.
It is clamped between described horizontal wheels wheel carrier and horizontal wheels link for adjusting horizontal wheels wheel carrier upper-lower position
Height adjustment pad piece.
The technical scheme of crane walking beam provided by the present invention using above-mentioned horizontal wheel apparatus is：Crane is walked
Beam, including extend along the longitudinal direction be used for beam body of the pressure-bearing on pressure-bearing track, be provided with beam body for use cooperatively with
Carry out the spacing left and right horizontal wheel apparatus of left and right skew, two horizontal wheels dress on pressure-bearing track to walking beam in the lateral direction
The horizontal wheels wheel carrier for including being fixedly mounted in the beam body respectively and rolling assembling are put on horizontal wheels wheel carrier and for rolling
Horizontal wheels of the top pressure on the side of the left and right sides of the pressure-bearing track, two horizontal wheel apparatus respectively further comprise one or split is solid
It is provided between the horizontal wheels wheel carrier and horizontal wheels link that are located in the horizontal wheels link in the beam body, each horizontal wheel apparatus
It is described each for guiding the horizontal wheels wheel carrier moving-adjusting structure that guiding movement is adjusted on horizontal wheels link in left-right direction
It is additionally provided between horizontal wheels wheel carrier and horizontal wheels link in horizontal wheel apparatus for being moved in horizontal wheels wheel carrier with horizontal wheels
Move the fixed structure by horizontal wheels wheel carrier and horizontal wheels link fixing assembling when being adjusted in place.
Described fixed structure includes being used for when horizontal wheels wheel carrier is adjusted in place with horizontal wheels movement by horizontal wheels wheel
Attachment bolt of the frame together with horizontal wheels link fixing assembling, described moving-adjusting structure includes the horizontal wheels wheel carrier
And/or the adjustment elongated hole of inserting corresponding with the attachment bolt that is provided with of hitch and driving horizontal wheels wheel carrier are along right and left
To the adjustment drive mechanism of mobile adjustment.
Described adjustment drive mechanism is screw adjustment mechanism, and screw adjustment mechanism includes the top pressure extended in left-right direction
One of them adjustment provided with the spiral assembling top pressure bolt in bolt, the horizontal wheels wheel carrier and horizontal wheels link
Threaded hole, another be provided with the top splenium for being used for coordinating with the corresponding end top pressure of top pressure bolt.
Described horizontal wheels wheel carrier include the interior plate that is distributed in left-right direction and outer panel and be arranged on interior outer panel it
Between cause ladder transition plate section of the outer panel in the vertical direction higher than the interior plate, the horizontal wheels rolling assembling is in institute
State at the end position of the remote outer panel of interior plate, what the horizontal wheels wheel carrier was provided with is used for and the attachment bolt
The bolt mounting holes of cooperation are arranged on the outer panel, and the edge projection away from the interior plate of the outer panel is oriented
The flange of upper extension, the horizontal wheels wheel carrier is provided with described adjustment threaded hole, and adjustment threaded hole is arranged on the flange.
The technical scheme of small tonnage crane provided by the present invention using above-mentioned walking beam is：Small tonnage crane,
Including girder and walking beam, walking beam is used in beam body of the pressure-bearing on pressure-bearing track, beam body including what is extended along the longitudinal direction
It is provided with for offseting spacing left and right water with the use of to carry out left and right on pressure-bearing track to walking beam in the lateral direction
Flat wheel apparatus, two horizontal wheel apparatus include the horizontal wheels wheel carrier and rolling assembling that are fixedly mounted in the beam body in level respectively
On wheel wheel carrier and for rolling horizontal wheels of the top pressure on the side of the left and right sides of the pressure-bearing track, two horizontal wheel apparatus also divide
Not Bao Kuo one or split be installed in horizontal wheels wheel carrier and water in horizontal wheels link in the beam body, each horizontal wheel apparatus
Being provided between flat wheel link is used to guide the guiding movement adjustment on horizontal wheels link in left-right direction of horizontal wheels wheel carrier
It is additionally provided between horizontal wheels wheel carrier and horizontal wheels link in moving-adjusting structure, each horizontal wheel apparatus in level
Wheel wheel carrier is moved when being adjusted in place with horizontal wheels by horizontal wheels wheel carrier and the fixed structure of horizontal wheels link fixing assembling.
The beneficial effects of the invention are as follows：A left side that crane walking beam provided by the present invention is used provided with corresponding matching,
Right horizontal wheel apparatus, the horizontal wheels wheel carrier of two horizontal wheel apparatus is arranged on the beam of walking beam by horizontal wheels link when in use
On body, and horizontal wheels wheel carrier can adjust the position of horizontal wheels wheel carrier in the lateral direction by moving-adjusting structure, and then adjust
Horizontal wheels position is coordinated with causing the side of the left and right sides of pressure-bearing track of the horizontal wheels with accepting walking beam to roll, and in mobile tune
It is whole in place when by fixed structure by horizontal wheels wheel carrier together with horizontal wheels link fixing assembling.Due to movement can be passed through
The position of structural adjustment horizontal wheels wheel carrier and horizontal wheels in the lateral direction is adjusted, so can be in real time according to reality to horizontal wheels
Device is adjusted, it is ensured that normal effective work of horizontal wheel apparatus, it is possibility to have effect reduction Maintenance and Repair cost.
Further, fixed structure includes attachment bolt, and fixed structure is relatively simple, using more convenient, and passes through
The mode that the regulation elongated hole and adjustment drive mechanism being engaged with attachment bolt are engaged realizes the mobile tune to horizontal wheels wheel carrier
Whole, overall structure is simple, adjusts efficient and convenient.
Further, adjustment drive mechanism is screw adjustment mechanism, by rotating top pressure bolt, is pushed up by top pressure bolt correspondence
Corresponding top splenium is pressed, so as to realize the relative displacement of horizontal wheels link and horizontal wheels wheel carrier in the lateral direction, is entered
And realize the position adjustment of horizontal wheels wheel carrier in the lateral direction.
Further, horizontal wheels wheel carrier includes interior plate, outer panel and ladder transition plate section, and outer panel is higher than interior plate,
And horizontal wheels are arranged on interior plate, and the bolt mounting holes with attachment bolt corresponding matching are set on outer panel, be easily installed
Assemble.Particularly it is higher than interior plate by what outer panel was designed, can be with when horizontal wheel apparatus is arranged in the beam body of walking beam
Accordingly reduce the overall volume of whole walking beam.
Further, height adjustment pad piece is clamped between horizontal wheels wheel carrier and horizontal wheels link, can be by changing
The number and thickness of And of Varying Depth adjust pad realize the adjustment to the height and position of horizontal wheels wheel carrier.
Brief description of the drawings
Fig. 1 is a kind of partial structural diagram of embodiment of crane walking beam provided by the present invention.
Embodiment
As shown in figure 1, the walking beam in a kind of embodiment of crane walking beam, the embodiment includes prolonging along the longitudinal direction
That stretches is used for beam body 1 of the pressure-bearing on pressure-bearing track 8, and the rear and front end of beam body 1 is rotatably equipped with the top with pressure-bearing track respectively
Portion's pressure-bearing surface rolls the road wheel 9 coordinated.It is provided with for using cooperatively in the lateral direction to exist to walking beam in beam body 1
The spacing left horizontal wheel apparatus 100 of left and right skew, right horizontal wheel apparatus 200 are carried out on pressure-bearing track 8.
The structure of two horizontal wheel apparatus is identical, by taking right horizontal wheel apparatus as an example, and right horizontal wheel apparatus is installed in including split
Horizontal wheels link 2 in beam body 1 and with the fixing assembling of horizontal wheels link 2 with the horizontal wheels wheel carrier 5 in beam body 1,
The level for rolling top pressure on the side 81 of the left and right sides of the pressure-bearing track 8 is rotatably equipped with horizontal wheels wheel carrier 5
Wheel 6.
Horizontal wheels link 2 herein is to pass through the removable angle steel being fixedly mounted in beam body 1 of fastening bolt.Horizontal wheels
Being provided between wheel carrier 5 and horizontal wheels link 2 is used to guide horizontal wheels wheel carrier 5 with horizontal wheels 6 in left-right direction in horizontal wheels
The moving-adjusting structure that guiding movement is adjusted on link 2, and be additionally provided between horizontal wheels wheel carrier 5 and horizontal wheels link 2
For when horizontal wheels wheel carrier is moved with horizontal wheels and is adjusted in place by horizontal wheels wheel carrier and horizontal wheels link fixing assembling
Fixed structure.
Specifically, in horizontal wheels wheel carrier 5 includes the interior plate 51 and outer panel 52 being distributed in left-right direction and is arranged on
Cause ladder transition plate section of the outer panel 52 in the vertical direction higher than the interior plate 51,6 turns of horizontal wheels between outer panel
It is dynamic to be assemblied at the end position of the remote outer panel 52 of the interior plate 51.
Above-mentioned fixed structure is included in horizontal wheels wheel carrier 5 when horizontal wheels wheel carrier 5 is adjusted in place with the movement of horizontal wheels 6
With the attachment bolt 3 together with the fixing assembling of horizontal wheels link 2, and moving-adjusting structure include horizontal wheels link 2 on set
The adjustment for moving adjustment in left-right direction with the corresponding inserting of attachment bolt 3 adjustment elongated hole and driving horizontal wheels wheel carrier 5 that is having
Drive mechanism, adjustment drive mechanism herein is specially screw adjustment mechanism, and screw adjustment mechanism includes extending in left-right direction
Top pressure bolt 4, the edge of the remote interior plate 51 of the outer panel 52 of the horizontal wheels wheel carrier is convexly equipped with upwardly extend convex
Edge, the adjustment threaded hole provided with the spiral assembling top pressure bolt 4 extended in left-right direction on flange, accordingly, in horizontal wheels
Link 2 is provided with the top splenium for being used for coordinating with the corresponding end top pressure of top pressure bolt 4.
Also, it is clamped between horizontal wheels wheel carrier 5 and horizontal wheels link 2 for adjusting horizontal wheels wheel carrier upper-lower position
Height adjustment pad piece.
In addition, being the self-strength improved the standard and take turns wheel carrier 5, provided with reinforcement convex tendon on the interior plate of horizontal wheels wheel carrier 5.
When in use, two horizontal wheel apparatus or so coordinate horizontal wheel apparatus on the walking beam that the present embodiment is provided in pairs
Use, after horizontal wheels link 2 is arranged in beam body 1, horizontal wheels wheel carrier 5 is mounted in by horizontal wheels by attachment bolt 3 in advance
On link 2, due to the effect for the adjustment elongated hole that horizontal wheels link 2 is provided with, water can be driven by rotating top pressure bolt 4
Flat wheel wheel carrier 5 moves adjustment in the lateral direction with horizontal wheels 6, so as to adjust the position of horizontal wheels 6.In addition, may be used also
To be realized by changing the number and thickness of height adjustment pad piece to horizontal wheels wheel carrier and horizontal wheels on upper-lower height direction
Adjustment.
On the walking beam that the present embodiment is provided, by the dismantled and assembled link matched somebody with somebody and wheel carrier structure, by horizontal wheel apparatus
Removable is arranged in beam body, and dismounting safeguards more convenient, and overall structure is also more compact, and adjustment amount is flexibly, safe.
On the walking beam that above-described embodiment is provided, the link of horizontal wheel apparatus is removable by fastening bolt split
In beam body, in other embodiments, link split is fixedly mounted on by the mode that can also be fixedly connected by other
In beam body, it might even be possible to link is directly integrally formed in beam body.
On the walking beam that above-described embodiment is provided, the horizontal wheels connection after being adjusted in place by way of attachment bolt
Frame is fixedly installed togather with horizontal wheels wheel carrier.In other embodiments, can also other it is removable be fixedly connected by way of,
Such as by the way of steady pin connection by horizontal wheels wheel carrier together with horizontal wheels link fixing assembling.
Walking beam in above-described embodiment can be the end carriage of bridge crane, or the grade beam of gantry crane, also
Can be the walking beam on monkey, walking girder construction that can be above-mentioned.
The present invention also provides the horizontal wheels dress in a kind of embodiment of the horizontal wheel apparatus of crane walking beam, the embodiment
Put identical with the structure of the horizontal wheel apparatus in the embodiment of above-mentioned crane walking beam, will not be repeated here.
The present invention also provides a kind of small tonnage crane, and the small tonnage crane includes girder and walking beam, and walking beam is adopted
With the structure of above-mentioned crane walking beam, it will not be repeated here.Crane can be bridge crane in the present embodiment, now,
Walking beam is the walking beam on end carriage or monkey.Crane can also be gantry crane, and now, walking beam is grade beam
Or the walking beam on monkey.
Claims (5)
1. crane walking beam, including being used for of extending along the longitudinal direction installs in beam body of the pressure-bearing on pressure-bearing track, beam body
Have for offseting spacing left and right horizontal wheels with the use of to carry out left and right on pressure-bearing track to walking beam in the lateral direction
Device, two horizontal wheel apparatus include the horizontal wheels wheel carrier being arranged in the beam body and rolling assembling on horizontal wheels wheel carrier respectively
And for rolling horizontal wheels of the top pressure on the side of the left and right sides of the pressure-bearing track, it is characterised in that：Two horizontal wheel apparatus
Respectively further comprise one or split is installed in horizontal wheels link in the beam body, described two horizontal wheels links distinguish positions
Being provided between horizontal wheels wheel carrier and horizontal wheels link in the left side and right side of beam body, each horizontal wheel apparatus is used to guide water
The flat wheel wheel carrier moving-adjusting structure that guiding movement is adjusted on horizontal wheels link in left-right direction, each horizontal wheel apparatus
In horizontal wheels wheel carrier and horizontal wheels link between be additionally provided with for horizontal wheels wheel carrier with horizontal wheels movement be adjusted in place
When by the fixed structure of horizontal wheels wheel carrier and horizontal wheels link fixing assembling.
2. crane walking beam according to claim 1, it is characterised in that：Described fixed structure includes being used in level
Wheel wheel carrier moves the connection by horizontal wheels wheel carrier together with horizontal wheels link fixing assembling when being adjusted in place with horizontal wheels
Bolt, described moving-adjusting structure couples including what the horizontal wheels wheel carrier and/or horizontal wheels link were provided with described
The adjustment elongated hole and driving horizontal wheels wheel carrier of bolt correspondence inserting move the adjustment drive mechanism of adjustment in left-right direction.
3. crane walking beam according to claim 2, it is characterised in that：Described adjustment drive mechanism adjusts for bolt
Mechanism, screw adjustment mechanism is included in the top pressure bolt extended in left-right direction, the horizontal wheels wheel carrier and horizontal wheels link
One of them provided with spiral assemble the top pressure bolt adjustment threaded hole, another provided with for and top pressure bolt
The top splenium that corresponding end top pressure coordinates.
4. crane walking beam according to claim 3, it is characterised in that：Described horizontal wheels wheel carrier is included along right and left
To distribution interior plate and outer panel and be arranged between interior outer panel and cause outer panel in the vertical direction higher than in described
The ladder transition plate section of side plate, end position of the horizontal wheels rolling assembling in the remote outer panel of the interior plate
Place, what the horizontal wheels wheel carrier was provided with is used to be arranged on the outer panel with the bolt mounting holes that the attachment bolt coordinates
On, the edge away from the interior plate of the outer panel, which is convexly equipped with the flange upwardly extended, the horizontal wheels wheel carrier, to be set
There is described adjustment threaded hole, adjustment threaded hole is arranged on the flange.
5. small tonnage crane, including girder and walking beam, it is characterised in that：Described walking beam is used in Claims 1-4
Crane walking beam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510643545.9A CN105197784B (en) | 2015-10-08 | 2015-10-08 | A kind of small tonnage crane and its walking beam and the horizontal wheel apparatus of walking beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510643545.9A CN105197784B (en) | 2015-10-08 | 2015-10-08 | A kind of small tonnage crane and its walking beam and the horizontal wheel apparatus of walking beam |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105197784A CN105197784A (en) | 2015-12-30 |
| CN105197784B true CN105197784B (en) | 2017-08-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510643545.9A Active CN105197784B (en) | 2015-10-08 | 2015-10-08 | A kind of small tonnage crane and its walking beam and the horizontal wheel apparatus of walking beam |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105197784B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106379702A (en) * | 2016-10-13 | 2017-02-08 | 罗伯泰克自动化科技（苏州）有限公司 | Horizontal guide wheel and clamping hook integrated structure |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4036168A1 (en) * | 1990-11-14 | 1992-05-21 | Hans Kuenz Gmbh | Adjustable side control rollers for rail guided crane - are mounted on crossbeam which can be swivelled to remove clearance and clamped in position |
| CN201626774U (en) * | 2010-01-19 | 2010-11-10 | 法兰泰克起重机械(苏州)有限公司 | Adjustable operating wheel group |
| CN102431894A (en) * | 2011-11-23 | 2012-05-02 | 株洲天桥起重机股份有限公司 | Horizontal wheel displacement adjusting method and displacement-adjustable horizontal wheel group |
| CN203428759U (en) * | 2013-07-30 | 2014-02-12 | 法兰泰克重工股份有限公司 | Adjustable wheel set for tunnel shield crane |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3618482B2 (en) * | 1996-08-26 | 2005-02-09 | 山九株式会社 | Rail flow non-powered automatic grinding equipment |
| CN104860197A (en) * | 2015-06-11 | 2015-08-26 | 王伟义 | Derail-prevention and rail-gnawing-prevention device for operation of cart and trolley of crane |
-
2015
- 2015-10-08 CN CN201510643545.9A patent/CN105197784B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4036168A1 (en) * | 1990-11-14 | 1992-05-21 | Hans Kuenz Gmbh | Adjustable side control rollers for rail guided crane - are mounted on crossbeam which can be swivelled to remove clearance and clamped in position |
| CN201626774U (en) * | 2010-01-19 | 2010-11-10 | 法兰泰克起重机械(苏州)有限公司 | Adjustable operating wheel group |
| CN102431894A (en) * | 2011-11-23 | 2012-05-02 | 株洲天桥起重机股份有限公司 | Horizontal wheel displacement adjusting method and displacement-adjustable horizontal wheel group |
| CN203428759U (en) * | 2013-07-30 | 2014-02-12 | 法兰泰克重工股份有限公司 | Adjustable wheel set for tunnel shield crane |
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| Publication number | Publication date |
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| CN105197784A (en) | 2015-12-30 |
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