CN106915688A - Preventing gnawing rail device, beam-hanging traveling crane and its walking method for beam-hanging traveling crane - Google Patents
Preventing gnawing rail device, beam-hanging traveling crane and its walking method for beam-hanging traveling crane Download PDFInfo
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- CN106915688A CN106915688A CN201710234545.2A CN201710234545A CN106915688A CN 106915688 A CN106915688 A CN 106915688A CN 201710234545 A CN201710234545 A CN 201710234545A CN 106915688 A CN106915688 A CN 106915688A
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- Prior art keywords
- traveling crane
- vehicle frame
- vertical shift
- hanging traveling
- chassis
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C9/00—Travelling gear incorporated in or fitted to trolleys or cranes
- B66C9/10—Undercarriages or bogies, e.g. end carriages, end bogies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C15/00—Safety gear
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C9/00—Travelling gear incorporated in or fitted to trolleys or cranes
- B66C9/14—Trolley or crane travel drives
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Carriers, Traveling Bodies, And Overhead Traveling Cranes (AREA)
Abstract
The present invention relates to a kind of preventing gnawing rail device, overhead traveling crane and walking method, belong to Bridge Erector technical field, and in particular to a kind of preventing gnawing rail device for beam-hanging traveling crane, beam-hanging traveling crane and its walking method.Including：Connecting cross beam, its two ends connect the hinged-support of chassis；Center hinge, its one end is fixedly connected crossbeam middle part, and the other end is extend into the connecting hole in the middle part of vehicle frame end carriage.To ensure vertical shift chassis stress equalization and adapting to Bridge Erector horn side bending deformation, day vehicle carriage end carriage middle part is connected using center hinge with vertical shift chassis, and vehicle frame main beam end is supported directly on vertical shift chassis.The preventing gnawing rail device energy adjust automatically adapts to gnaw rail, is automatically releasable the lateral force between wheel and track, it is to avoid gnaw rail for a long time.
Description
Technical field
The present invention relates to a kind of preventing gnawing rail device, overhead traveling crane and walking method, belong to Bridge Erector technical field, and in particular to one
Plant preventing gnawing rail device, beam-hanging traveling crane and its walking method for being used for beam-hanging traveling crane.
Background technology
At present, the Bridge Erector application of large-tonnage is more and more extensive, and have that span is big, lifting capacity weight, lifting altitude are high, work
The features such as rank is high, this design for allowing for the beam-hanging traveling crane supporting with it becomes particularly important.It is particularly due to manufacture and pacifies
Dress error, overhead traveling crane traveling is easy to occur to gnaw rail phenomenon, it is regular it is prolonged gnaw rail not only can be to track, wheel, motor etc.
Relevant device causes very big damage, influences the safety and steady operation of equipment, and serious even also results in serious accident
Generation.
Solve to gnaw the essence of the method for rail except strictly controlling wheel and track in manufacture installation from configuration aspects at present
It is outside one's consideration, also there are many wheel rims from wheel to design and set about, mainly there are following two schemes：One sidecar wheel is without wheel rim, another side car
It is two-wheel edge to take turns；Two sidecar wheels are single-wheel edge.Two schemes can mitigate the phenomenon for gnawing rail only in certain scope, but can not
It is enough to avoid gnawing rail completely.Also there are some that the method for gnawing rail is addressed from control aspect, although this control device is in certain journey
Can reduce the phenomenon for gnawing rail on degree, but have that reliability is poor, maintaining difficulty is big, costly and stability is poor etc. and lack
Point.
Long span, big elevating capacity overhead traveling crane traveling are easier the phenomenon for gnawing rail occur, and traditional method is not enough to solve mesh
Rail phenomenon is gnawed in preceding appearance.
Therefore, a set of compact conformation of present invention proposition is reasonable, easy to operate, safe and reliable gnaws for the anti-of beam-hanging traveling crane
Rail device, beam-hanging traveling crane and its walking method.The overhead traveling crane carries preventing gnawing rail device, can be when rail generation is gnawed, self-adaptative adjustment
Wheel is automatically releasable the lateral force between wheel and track, it is to avoid gnaw rail for a long time relative to orbital position.
Using the principle or similar principle for installing horizontal guide sheave more than other preventing gnawing rail devices of the prior art, control
In directive wheel processed and track the gap in outside less than wheel rim and outside in track gap, when rail is gnawed directive wheel and
Rail contact, is so only capable of preventing wheel rim and rail contact, it is to avoid the abrasion of wheel rim, can not eliminate and gnaw rail, and
And directive wheel cannot discharge with the side force of rail contact, prolonged lateral impact can cause the fatigue rupture of steel construction, very
To causing the generation of security incident.
The content of the invention
The present invention mainly solves the technical problem for gnawing rail existing for prior art, there is provided one kind is used for beam-hanging traveling crane
Preventing gnawing rail device, beam-hanging traveling crane and its walking method, its self adaptation is strong, can be automatically releasable lateral between wheel and track
Active force, it is to avoid gnaw rail for a long time.
Further object of the present invention is to solve that preventing gnawing rail means reliability of the prior art is poor, maintaining difficulty
Greatly, the shortcomings of costly and poor stability, it is proposed that a kind of preventing gnawing rail device for beam-hanging traveling crane, beam-hanging traveling crane and its walk
Row method, the overhead traveling crane and walking method or so vertical shift chassis are with vertical shift vehicle frame using form is flexibly connected, and installation operation is convenient,
Simple and compact for structure, vehicle frame end carriage middle part lower cover coordinates center hinge using either side of the small of the back hole and circular hole, can discharge due to vehicle frame
Main beam deformation and the lateral displacement that produces, safety guarantee are good.
Above-mentioned technical problem of the invention is mainly what is be addressed by following technical proposals：
A kind of preventing gnawing rail device for beam-hanging traveling crane, including：
Connecting cross beam, its two ends connect the hinged-support of chassis；
Center hinge, its one end is fixedly connected crossbeam middle part, and the other end is extend into the connecting hole in the middle part of vehicle frame end carriage.
Optimization, what a kind of above-mentioned preventing gnawing rail device for beam-hanging traveling crane, at least side vehicle frame end carriage middle part were set
Connecting hole is waist round hole.
Optimization, a kind of above-mentioned preventing gnawing rail device for beam-hanging traveling crane, the connection that side vehicle frame end carriage middle part is set
Hole is waist round hole, and the connecting hole that opposite side vehicle frame end carriage middle part is set is circular hole.
Optimization, a kind of above-mentioned preventing gnawing rail device for beam-hanging traveling crane, the polylith friction plate that hinged-support is provided with；Car
The flange board component lower end of frame girder lower cover end is provided with for the stainless steel plate with the friction plate directly contact.
Optimization, a kind of above-mentioned preventing gnawing rail device for beam-hanging traveling crane and is arranged at vehicle frame main beam lower cover end
Rubber blanket is provided between the flange board component of its lower end.
A kind of preventing gnawing rail beam-hanging traveling crane, including any of the above-described preventing gnawing rail device.
Optimization, a kind of above-mentioned preventing gnawing rail beam-hanging traveling crane, including：Separate unit beam-hanging traveling crane is by two across left and right Bridge Erector
The vehicle frame main beam of horn and the vehicle frame end carriage of left and right form vertical shift vehicle frame, two girder ends in vertical shift driving mechanism and vertical shift vehicle frame
Portion is connected using flange, and the girder top of vertical shift vehicle frame is provided with rail for cross traveling trolley provides support, and end carriage lower support exists
Can make longitudinally running on vertical shift chassis, end carriage outside is provided with hoist engine assembly with the leading block group being located on cross traveling trolley
The common motion for providing vertical direction, oblique pull anchor is located at rear beam-hanging traveling crane end carriage outside, common with vertical shift driving mechanism
Effect drives Bridge Erector horn vertical shift via.
A kind of preventing gnawing rail beam-hanging traveling crane traveling method, including：Using the hinged-support of chassis before and after connecting cross beam connection, utilize
One end is arranged at the center hinge connecting cross beam middle part in the connecting hole of vehicle frame end carriage middle part, horizontal by connecting when chassis gnaws rail
Liang Rao centers hinge is rotated and adjusted and chassis and orbit angle.
Therefore, the invention has the advantages that：
1st, self adaptation is strong.When overhead traveling crane is during traveling, when there is gnawing rail in bogie wheels wheel rim and rail contact, rail
Road must have a reaction force acts on wheel, so as to pass through chassis power transmission to equalizer, then be passed to power by equalizer
On hinged-support, hinged-support simultaneously produces relative rotation with regulation crossbeam around center hinge and vehicle frame main beam, is automatically releasable wheel and rail
Lateral force between road, it is to avoid gnaw rail for a long time.
2nd, installation operation is convenient.Vertical shift chassis in left and right is used with vertical shift vehicle frame and is flexibly connected form, the friction on chassis
The flanged plate directly contact of plate and vehicle frame lower cover, in addition the connecting cross beam on chassis fixed by latch with vehicle frame end carriage, it is whole
Individual chassis and vehicle frame are to transmit driving force by the frictional resistance and bearing pin of contact surface, are easy to tearing open for vertical shift chassis and vertical shift vehicle frame
Dress, labour intensity is low, flexible to operation.
3rd, safety guarantee is good.One end that vehicle frame end carriage middle part lower cover coordinates with center hinge is circular hole, and the other end is
Either side of the small of the back hole, when overhead traveling crane hanging beam is travelled, circular hole, the design connected mode in either side of the small of the back hole are adapted to certain Bridge Erector horn side sway
Deformation, in addition, either side of the small of the back hole is small relative to connecting cross beam center inside gap, lateral gap is big, can discharge a part due to car
Frame main beam deformation and the lateral displacement that produces, improve hinge and hinged block are lateral stressed with vehicle frame main beam junction.
4th, it is simple and compact for structure.Beam-hanging traveling crane shares a set of sprocket wheel chain traction vertical shift system with Bridge Erector horn via,
Power resource is made full use of, the design of supporting leg is more simple compact.
Brief description of the drawings
Fig. 1 is beam-hanging traveling crane overall schematic.
Fig. 2 is the left view of Fig. 1.
Fig. 3 is the front view of preventing gnawing rail device.
Fig. 4 is the left view of Fig. 3.
Fig. 5 be along Fig. 3 A-A to partial sectional view.
Fig. 6 is the partial schematic diagram of vertical shift driving mechanism.
Fig. 7 is the top view of Fig. 6.
Fig. 8 is the schematic diagram of oblique pull anchor.
Fig. 9 is the left view of Fig. 8.
Reference：
1. vertical shift chassis, 2. vertical shift vehicle frame, 3. preventing gnawing rail device, 4. cross traveling trolley, 5. hoist engine assembly, 6. vertical shift driving
Mechanism, 7. oblique pull anchor, 8. suspender, 9. leading block group, 10. steel wire rope, 3-1. vehicle frames end carriage, 3-2. vehicle frame main beams,
3-3. hinged-supports, 3-4. friction plates, 3-5. centers hinge, 3-6. connecting cross beams, 3-7. flanges board component, 3-8. rubber blankets, 3-
9. chassis, 3-10. equalizers, 6-1. driving box, 6-2. motor reducers, 6-3. sprocket wheels, 6-4. directive wheels, the regulation of 6-5. chains
Device, 6-6. drive chains, 6-7. guide wheel shafts, 6-8. sprocket shafts, 6-9. horns, 7-1. anchorings telescopic screw rod, 7-2. folding and unfoldings
Supporting leg in device, 7-3. oil cylinders fixed mount, 7-4. vehicle frames end carriage, 7-5. vehicle frame main beams, 7-6..
Specific embodiment
Below by embodiment, and with reference to accompanying drawing, technical scheme is described in further detail.
Embodiment：
As shown in Figure 1 to Figure 2, separate unit beam-hanging traveling crane by two across the vehicle frame main beam of left and right Bridge Erector horn and left and right
Vehicle frame end carriage forms vertical shift vehicle frame 2.Vertical shift driving mechanism 6 is connected with two end of main beam on vertical shift vehicle frame 2 using flange, vertical shift
The girder top of vehicle frame 2 is provided with rail for cross traveling trolley 4 provides support, and end carriage lower support can be made on vertical shift chassis 1
Longitudinally running, it is vertical with the common offer of the leading block group 9 being located on cross traveling trolley 4 that end carriage outside is provided with hoist engine assembly 5
The motion in direction, oblique pull anchor 7 is located at rear beam-hanging traveling crane end carriage outside, with the collective effect bogie of vertical shift driving mechanism 6
Bridge machine horn vertical shift via.
As shown in Figures 3 to 5, the vehicle frame main beam 3-2 lower covers end of preventing gnawing rail device uses spiral shell with flange board component 3-7
Tether and connect, centre is provided with rubber blanket 3-8, certain buffering release deformation can be played a part of, flange board component 3-7 lower ends set
There is stainless steel plate, for preventing get rusty caused resistance increase, the polylith friction plate that the stainless steel plate is provided with hinged-support 3-3
3-4 directly contacts, are provided with oil groove hole on the flanged plate and friction plate 3-4 on hinged-support 3-3, convenient injection lubricating oil is reduced
The relative frictional resistance for sliding of vehicle frame main beam 3-2 and hinged-support 3-3.Fixed by connecting cross beam 3-6 between two hinged-support 3-3 and connected
Connect, one end of center hinge 3-5 is fixed with clamp by axle sleeve with connecting cross beam 3-6, and the other end extend into side vehicle frame end carriage
In the either side of the small of the back hole of 3-1 middle parts trapezoid seat, what trapezoid seat and center hinge 3-5 coordinated in the middle part of opposite side vehicle frame end carriage 3-1 is circular hole,
When overhead traveling crane hanging beam is travelled, the design connected mode in one end circular hole one end either side of the small of the back hole is adapted to certain crane's major girder side sway
Deformation, in addition, either side of the small of the back hole is small relative to connecting cross beam 3-6 center insides gap, lateral gap is big, can discharge a part due to
The lateral displacement that vehicle frame main beam 3-2 deforms and produces, improves center hinge 3-5 and hinged-support 3-3 and is connected with vehicle frame main beam 3-2
Place it is lateral stressed so that reduces chassis 3-9 wheels and track gnaws trailer rate.
When overhead traveling crane is during traveling, when rail occur gnawing in chassis 3-9 wheel rims and rail contact, track must have
One reaction force acts so as to pass through chassis 3-9 power transmissions to equalizer 3-10, then are passed power by equalizer 3-10 on wheel
Onto hinged-support 3-3, hinged-support 3-3 simultaneously produces relative rotation with connecting cross beam 3-6 around center hinge 3-5 and vehicle frame main beam 3-2,
It is automatically releasable the lateral force between wheel and track, it is to avoid gnaw rail for a long time.Center hinge 3-5 is not only in turning round
The heart, also plays connection intermal force.
After said structure, the present embodiment also discloses a kind of driving force of beam-hanging traveling crane and realizes that Bridge Erector horn is indulged
The method for moving past hole：
A set of sprocket wheel chain traction vertical shift system is shared using beam-hanging traveling crane and Bridge Erector horn via, in horn vertical shift
Kong Shi, the oblique pull anchor that rear beam-hanging traveling crane passes through to be located at thereon is connected with middle supporting leg, and middle supporting leg is anchored with box beam, to realize
Beam-hanging traveling crane " quiet " and Bridge Erector horn " dynamic ".
As shown in Figures 6 to 9, vertical shift driving mechanism and oblique pull anchor, collective effect is in driving overhead traveling crane lifting vertical shift
Box beam and driving Bridge Erector horn via.
Wherein, vertical shift driving mechanism be arranged symmetrically using double vertical shift variable-frequency motors, sprocket wheel chain drive, unilateral double track operation
Vertical shift system design, power is transmitted to sprocket wheel 6-3, sprocket wheel 6-3 and drive chain by motor reducer 6-2 by sprocket shaft 6-8
6-6 engagements are engaged so as to drive driving box 6-1 to walk by directive wheel 6-4 with the drive chain 6-6 being fixed on horn 6-9 again
OK, drive chain 6-6 is fixed on horn 6-9 by adjusting device for chains 6-5, driving box 6-1 again with vehicle frame main beam 7-5 on
Flange is connected, and is finally realized the advance of overhead traveling crane and is retreated.
Wherein, oblique pull anchor 7 is located on rear overhead traveling crane, and draw off gear 7-2 is mainly by telescopic oil cylinder and connection steel wire
Rope composition, its one end is fixed in vehicle frame main beam 7-5 on coxostermum by oil cylinder fixed mount 7-3, and the other end is by connecting steel wire
Rope is fixed with anchoring telescopic screw rod 7-1, and anchoring telescopic screw rod 7-1 one end is fixed on vehicle frame end carriage 7-4, when horn 6-9 needs
During vertical shift via, draw off gear 7-2 puts down telescopic screw rod 7-1 is anchored, the length of regulation anchoring telescopic screw rod 7-1, allows anchoring
The telescopic screw rod 7-1 other ends link together with middle supporting leg 7-6, and so as to realize horn 6-9 vertical shifts forward, and horn vertical shift is to rear
The reaction force backward that overhead traveling crane is produced is delivered on middle supporting leg 7-6 by anchoring telescopic screw rod 7-1.Horn 6-9 vertical shifts are arrived
Behind position, the connection of anchoring telescopic screw rod 7-1 and middle supporting leg 7-6 is released, grappling telescopic screw rod 7-1 is retracted original by draw off gear 7-2
Beginning position.
By foregoing description, the advantage of the invention is that：
1st, self adaptation is strong.When overhead traveling crane is during traveling, when there is gnawing rail in bogie wheels wheel rim and rail contact, rail
Road must have a reaction force acts on wheel, so as to pass through chassis power transmission to equalizer, then be passed to power by equalizer
On hinged-support, hinged-support simultaneously produces relative rotation with regulation crossbeam around center hinge and vehicle frame main beam, is automatically releasable wheel and rail
Lateral force between road, it is to avoid gnaw rail for a long time.
2nd, installation operation is convenient.Vertical shift chassis in left and right is used with vertical shift vehicle frame and is flexibly connected form, the friction on chassis
The flanged plate directly contact of plate and vehicle frame lower cover, in addition the connecting cross beam on chassis fixed by latch with vehicle frame end carriage, it is whole
Individual chassis and vehicle frame are to transmit driving force by the frictional resistance and bearing pin of contact surface, are easy to tearing open for vertical shift chassis and vertical shift vehicle frame
Dress, labour intensity is low, flexible to operation.
3rd, safety guarantee is good.One end that vehicle frame end carriage middle part lower cover coordinates with center hinge is circular hole, and the other end is
Either side of the small of the back hole, when overhead traveling crane hanging beam is travelled, the design connected mode in one end circular hole one end either side of the small of the back hole is adapted to certain Bridge Erector
Horn side bending deformation, in addition, either side of the small of the back hole is small relative to connecting cross beam center inside gap, lateral gap is big, can discharge one
Divide the lateral displacement produced because vehicle frame main beam deforms, improve hinge and hinged block is received with the transverse direction of vehicle frame main beam junction
Power.
4th, it is simple and compact for structure, it is reliable.Beam-hanging traveling crane shares a set of sprocket wheel chain traction with Bridge Erector horn via
Vertical shift system, makes full use of power resource, and the design of supporting leg is more simple compact.Vertical shift via uses motor-reductor-chain
The mode of transmission traction travelling wheel is run, and relatively conventional type of drive is not easy skidding occur, and operate steadily reliability.
Specific embodiment described herein is only to the spiritual explanation for example of the present invention.Technology neck belonging to of the invention
The technical staff in domain can be made various modifications or supplement to described specific embodiment or be replaced using similar mode
Generation, but without departing from spirit of the invention or surmount scope defined in appended claims.
Claims (8)
1. a kind of preventing gnawing rail device for beam-hanging traveling crane, it is characterised in that including：
Connecting cross beam (3-6), the hinged-support (3-3) at its two ends connection chassis (3-9)；
Center hinge (3-5), its one end is fixedly connected crossbeam (3-6) middle part, and the other end is extend into the middle part of vehicle frame end carriage (3-1)
In connecting hole.
2. a kind of preventing gnawing rail device for beam-hanging traveling crane according to claim 1, it is characterised in that at least side vehicle frame
The connecting hole that end carriage (3-1) middle part is set is waist round hole.
3. a kind of preventing gnawing rail device for beam-hanging traveling crane according to claim 1, it is characterised in that side vehicle frame end carriage
The connecting hole that (3-1) middle part is set is waist round hole, and the connecting hole that opposite side vehicle frame end carriage (3-1) middle part is set is circular hole.
4. a kind of preventing gnawing rail device for beam-hanging traveling crane according to claim 1, it is characterised in that hinged-support (3-3)
The polylith friction plate (3-4) being provided with；Flange board component (3-7) lower end of vehicle frame main beam lower cover end be provided with for and institute
State the stainless steel plate of friction plate (3-4) directly contact.
5. a kind of preventing gnawing rail device for beam-hanging traveling crane according to claim 1, it is characterised in that vehicle frame main beam lower cover
Rubber blanket (3-8) is provided between plate end and the flange board component (3-7) for being arranged at its lower end.
6. a kind of preventing gnawing rail beam-hanging traveling crane, it is characterised in that including the preventing gnawing rail device described in any of the above-described claim.
7. a kind of preventing gnawing rail beam-hanging traveling crane according to claim 6, it is characterised in that including：Separate unit beam-hanging traveling crane is by two
Bar forms vertical shift vehicle frame, vertical shift driving mechanism and vertical shift across the vehicle frame main beam of left and right Bridge Erector horn and the vehicle frame end carriage of left and right
Two end of main beam on vehicle frame are connected using flange, and the girder top of vertical shift vehicle frame is provided with rail for cross traveling trolley provides branch
Support, end carriage lower support can make longitudinally running on vertical shift chassis, end carriage outside be provided with hoist engine assembly be located at it is traversing
Leading block group on dolly provides the motion of vertical direction jointly, and oblique pull anchor is located at rear beam-hanging traveling crane end carriage outside,
Bridge Erector horn vertical shift via is driven with vertical shift driving mechanism collective effect.
8. a kind of preventing gnawing rail beam-hanging traveling crane traveling method, it is characterised in that including：Using the hinge of chassis before and after connecting cross beam connection
Bearing, the center hinge connecting cross beam middle part in the connecting hole of vehicle frame end carriage middle part is arranged at using one end, when chassis gnaws rail, is led to
Connecting cross beam is crossed to be rotated around center hinge and adjusted and chassis and orbit angle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710234545.2A CN106915688B (en) | 2017-04-11 | 2017-04-11 | Preventing gnawing rail device, beam-hanging traveling crane and its walking method for beam-hanging traveling crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710234545.2A CN106915688B (en) | 2017-04-11 | 2017-04-11 | Preventing gnawing rail device, beam-hanging traveling crane and its walking method for beam-hanging traveling crane |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106915688A true CN106915688A (en) | 2017-07-04 |
| CN106915688B CN106915688B (en) | 2019-02-22 |
Family
ID=59567060
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710234545.2A Active CN106915688B (en) | 2017-04-11 | 2017-04-11 | Preventing gnawing rail device, beam-hanging traveling crane and its walking method for beam-hanging traveling crane |
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| Country | Link |
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| CN (1) | CN106915688B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112323657A (en) * | 2020-10-30 | 2021-02-05 | 中铁大桥局集团有限公司 | Integrated prefabricated bridge dismantling machine and prefabricated bridge dismantling method |
| CN115196509A (en) * | 2022-09-19 | 2022-10-18 | 河南科特尔机械制造有限公司 | Aluminum electrolysis material suction crown block unit |
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| CN2799497Y (en) * | 2005-06-06 | 2006-07-26 | 上海振华港口机械（集团）股份有限公司 | Turning engine operation mechanism for large-scale railway crane |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112323657A (en) * | 2020-10-30 | 2021-02-05 | 中铁大桥局集团有限公司 | Integrated prefabricated bridge dismantling machine and prefabricated bridge dismantling method |
| CN115196509A (en) * | 2022-09-19 | 2022-10-18 | 河南科特尔机械制造有限公司 | Aluminum electrolysis material suction crown block unit |
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| Publication number | Publication date |
|---|---|
| CN106915688B (en) | 2019-02-22 |
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