CN105731245A - Clamp-type lifting hook and method for lifting fabricated light steel wall - Google Patents
Clamp-type lifting hook and method for lifting fabricated light steel wall Download PDFInfo
- Publication number
- CN105731245A CN105731245A CN201610232829.3A CN201610232829A CN105731245A CN 105731245 A CN105731245 A CN 105731245A CN 201610232829 A CN201610232829 A CN 201610232829A CN 105731245 A CN105731245 A CN 105731245A
- Authority
- CN
- China
- Prior art keywords
- hook
- lifting
- right hook
- light steel
- assembled light
- Prior art date
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
- B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
- B66C1/22—Rigid members, e.g. L-shaped members, with parts engaging the under surface of the loads; Crane hooks
- B66C1/34—Crane hooks
- B66C1/36—Crane hooks with means, e.g. spring-biased detents, for preventing inadvertent disengagement of loads
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/14—Conveying or assembling building elements
- E04G21/16—Tools or apparatus
- E04G21/162—Handles to carry construction blocks
Abstract
The invention discloses a clamp-type lifting hook and method for lifting a fabricated light steel wall. The lifting hook and method are specially used for lifting the fabricated light steel wall. The lifting speed on the site can be increased, and section steel of a top cross beam cannot be pulled broken, and thus safety is improved. The clamp-type lifting hook comprises a U-shaped lifting ring, a hinged shaft, a left hook, a right hook and a bolt. The upper end of the left hook and the upper end of the right hook are fixed into the U-shaped lifting ring rotatably through the hinged shaft. Holes are formed in the middle of the left hook and the middle of the right hook so that the bolt can be inserted in or pulled out. The left hook and the right hook are symmetrically arranged and are each provided with a handle. The left hook is of a single-layer structure, and the right hook is of a single-layer or double-layer or multiple-layer structure. The single layer of the right hook is consistent with that of the left hook in contour. The left hook is wrapped in the middle of the right hook when the right hook is of the double-layer structure. The left hook rotates in the space between double layers of the right hook. In the lifting process, the lifting hook is held in hands, and the two handles of the lifting hook are pushed outwards with fingers, so that two hook heads are retracted inwards, and the handles are pushed to a set position; the lifting hook is placed into a lightgage steel joist of the wall along a notch of the lightgage steel joist; when the handles are opened to a set position, the bolt is inserted for lifting.
Description
Technical field
The invention belongs to building machinery field, particularly to the assembling of prefabricated buildings building, be specifically related to a kind of suspension hook, be used for lifting assembled light steel wall.
Background technology
The assembled light steel wall that big work letter is built is the composite type wall body mold that the poly-insulation of independent research is built in big work letter, decoration, maintenance are integrated, have good heat preservation performance, cost is low, assemble the advantages such as fast, highly there are 3 meters and 2.7 meters of two kinds of specifications, width 1.2 meters, referring to Chinese patent 201520424567.1, Chinese patent 201510341160.7, Chinese patent 2015211012163.
The sectional drawing of one embodiment of the assembled light steel wall that big work letter is built is as it is shown in figure 1, include internal decking sheet 11, cement fibrolite plate 12, lightgage steel joist packed layer 13, cement fibrolite plate 13, outer decorative layer 14.
Wherein the head piece 22 of lightgage steel joist and cross member are all a kind of shaped steel, and lifting point can only select on the head piece of lightgage steel joist, and shaped steel sectional view is as shown in Figure 2.
Existing technical scheme is respectively to open a circular hole at head piece 22 two ends of lightgage steel joist, then welds a nut 23 overleaf, is lifted by suspension ring 21, as shown in Figure 3.
Its shortcoming mainly has following 2 points:
1, on-the-spot dress suspension ring and to unload suspension ring all inconvenient, lose time, affect site operation speed.
2, section steel plate thickness a only has 2mm, and the pulling force of lifting is applied on thin-walled, and application point is unreasonable, it is easy to pull off shaped steel.
Summary of the invention
For above problem, it is provided that a kind of jaw type suspension hook for lifting assembled light steel wall and method, it fine can must solve two above shortcoming, improves on-site hoisting speed and will not pull off shaped steel, improves on-site hoisting safety.
Look at structure assembling figure (Fig. 6) of jaw type suspension hook first, it is mainly made up of U-shaped suspension ring (Fig. 7), left hook (Fig. 9), right hook (Figure 10) and latch (Figure 11) four part, and latch chain is connected on jointed shaft or U-shaped suspension ring.
The technical scheme is that
A kind of jaw type suspension hook 100 for lifting assembled light steel wall, it is characterised in that jaw type suspension hook includes U-shaped suspension ring 1, jointed shaft 2, left hook 3, right hook 4 and latch 5,
U-shaped suspension ring are inverted " u "-shaped, and two ends have circular hole, run through for jointed shaft；
Left hook, right hook bottom are gib head；
The upper end of left hook and right hook all offers the first hole, and jointed shaft runs through this first hole and left hook and right hook are hinged on the centre of U-shaped suspension ring, and jointed shaft is fixed on U-shaped suspension ring；The middle part of left hook and right hook is provided with the second hole, inserts or pull out for latch, and the second axially bored line is parallel with the first axially bored line；
Left hook and right hook are for being symmetrical arranged, and the outside side of left hook and right hook is all respectively provided with a jaw type handle, and two symmetric handles arrange formation jaw type handle arrangement.
Preferably, left hook is single layer structure, and right hook is double-decker, and right hook monolayer is consistent with left hook profile, and right hook is provided with diplopore, double hook, wraps left hook in the middle of right hook, and a left side is hooked in the double-deck middle space of right hook and rotates.
Alternatively, the combination of any one or any scheme of below scheme is adopted:
Scheme 1:U type suspension ring are to be curved " u "-shaped by a round steel, its round-meshed annulus of two ends welded bands；
Scheme 2:U type suspension ring, left hook and right hook are that casting forms；
Scheme 3: one end of latch adopts iron chains or chain by ring, pore structure connecting hinge spindle or U-shaped suspension ring；
Scheme 4: jointed shaft is welded or is fixed on U-shaped suspension ring by bolt, riveting method, makes whole hook non-dismountable；
Scheme 5: right hook is single or multiple lift structure, left hook is hinged on jointed shaft with the laminating of right hook upper end.
Alternatively, left hook, right hook main body are L-shaped structure, and the outside of gib head bending is arc, and inner side is linear, and linear and arc cross formation bill.
Preferably, left hook is the same with the outer contour shape of right hook, and respectively with one handle, left hook is single layer structure, and thickness is 15mm；Right hook is double-decker, and its gross thickness is 35mm, and thick each 10mm, central cut-out 15mm are thick for both sides hook.
Preferably, latch adopts 45# round steel to process, and after left and right hook opens up into set angle, inserts latch, it is prevented that left and right is hooked under weight action of gravity and rotates.
Preferably, gib head cross sectional shape is made up of a horizontal linear and a parabola y=0.01x2.
Preferably, the bill place wedge angle of gib head is 35 °.
Preferably, angle between left and right hook is scalable to be ranged between-9 ° to 7 °, represents, on the occasion of interval, the angle formed when two hooks open, the angle formed when negative value interval represents two hooks to contract.
A kind of method for lifting assembled light steel wall, it is characterised in that adopting above-mentioned a kind of jaw type suspension hook for lifting assembled light steel wall, step is as follows:
S1: output gap 6 at the two ends of the head piece 22 of body of wall lightgage steel joist；
S2: holding suspension hook two handles with finger past extrapolation suspension hook, two gib heads can, to contract, just push away motionless when shifting setting position onto, and now left and right hook angle reaches the first limit angle；
S3: suspension hook puts into the lightgage steel joist of body of wall along the gap of lightgage steel joist；
S4: with holding tight two handles, with strength inside grip pressure handle, two gib heads can be flared out, and under force, gib head can squeeze through and arrive precalculated position in lightgage steel joist, and now left and right hook angle reaches the second limit angle；
S5: plug latch, starts lifting.
Preferably, in S4 step, with holding tight two handles, inside grip pressure handle with strength, two gib heads can be flared out, owing to lightgage steel joist interior wall is filled with polyurethane foam, gib head can be produced certain resistance, so handle of need to exerting oneself, under force, gib head can squeeze through polyurethane foaming layer and arrive precalculated position, and now left and right hook angle reaches the second limit angle.
Preferably, the first described limit angle is 9 °；The second described limit angle is 7 °.
Preferably, described gap is of a size of 50mm*40mm.
Preferably, in S4 step, two bill distances are 90mm.
The present invention mainly can bring following benefit:
1, handling are quite convenient to quick, accelerate site operation speed.
2, being applied on the coil of strip limit reinforcement of shaped steel by lifting application point, this position bending strength is high, will not pull shaped steel, and safety is good.
3, using latch location, Hoisting Position is accurate, does not have unhook phenomenon, and safety is secure.
4, the suspension hook of the present invention has contractile properties, it is adaptable to the restricted situation of Hoisting Position.
Accompanying drawing explanation
Fig. 1 is the organigram of an embodiment of the assembled light steel wall that big work letter is built；
Fig. 2 is the schematic cross-section of one embodiment of assembled light steel wall that big work letter is built；
Fig. 3 is the front view that prior art carries out lifting；
Fig. 4 is the side view of Fig. 3；
Fig. 5 is the top view of Fig. 3；
Fig. 6 illustrates the axonometric drawing of an embodiment of the jaw type suspension hook of the present invention；
Fig. 7 illustrates the axonometric drawing of an embodiment of the U-shaped suspension ring of the tong crane hook assembly of the present invention；
Fig. 8 illustrates the axonometric drawing of an embodiment of the jointed shaft of the tong crane hook assembly of the present invention；
Fig. 9 illustrates the axonometric drawing of an embodiment of the left hook of the tong crane hook assembly of the present invention；
Figure 10 illustrates the axonometric drawing of an embodiment of the right hook of the tong crane hook assembly of the present invention；
Figure 11 illustrates the axonometric drawing of an embodiment of the latch of the tong crane hook assembly of the present invention；
Figure 12 illustrates the schematic diagram of an embodiment of the body of wall open and clear mouth of lightgage steel joist head piece of the present invention；
Figure 13 illustrates the front view of the embodiment using tong crane hook block dress of the present invention；
Figure 14 illustrates that the present invention's uses the side view hooking head piece in tong crane hook block dress after the opening an of embodiment；
Figure 15 illustrates the top view of the embodiment using tong crane hook block dress of the present invention；
Figure 16 illustrates that the schematic diagram of an embodiment of head piece gap put into by the jaw type suspension hook of the present invention after shrinking.
Detailed description of the invention
In conjunction with drawings and the specific embodiments, the present invention is further described:
As shown in Figure 6, the structure of jaw type suspension hook 100 is mainly made up of U-shaped suspension ring 1 (Fig. 7), jointed shaft 2 (Fig. 8), left hook 3 (Fig. 9), right hook 4 (Figure 10) and latch 5 (Figure 11).Left hook and right hook jointed shaft run through hinged, are then welded on U-shaped suspension ring by jointed shaft, make whole hook non-dismountable.Latch can be optionally plugged into and extract, and in order to not lose, connects on jointed shaft or U-shaped suspension ring with iron chains or chain.The Main Function of jointed shaft is used to be hinged together left hook and right hook, makes left and right hook can rotate around jointed shaft, and another effect is the lifting power on hook to be delivered on U-shaped suspension ring.
In a preferred embodiment, U-shaped suspension ring are to be curved " u "-shaped by the round steel of a Φ 16mm, and two ends welding is with the annulus of Φ 16mm circular hole.
In a preferred embodiment, whole parts can also cast and form.
In a preferred embodiment, jointed shaft can also be fixed by bolts on U-shaped suspension ring, or is fixed on U-shaped suspension ring by modes such as riveted joints.
In a preferred embodiment, foreign steamer Guo's shape of left hook and right hook is the same, respectively with one handle.Left hook is single layer structure, and thickness is 15mm；And right hook is double-deck, its gross thickness is 35mm, and thick each 10mm, central cut-out 15mm are thick for both sides hook.
In another preferred embodiment, right hook is also monolayer, and thickness is the same with left hook, say, that left and right hook is the same, then fits hinged.
In another preferred embodiment, right hook is the multiple structures such as three layers.
Wrapping left hook in the middle of right hook, left hook can rotate in the cavity of right hook.
In a preferred embodiment, latch 45# round steel processes, and it acts primarily as the effect of pin.After left and right hook opens up into proper angle, insert latch, it is prevented that left and right is hooked under weight action of gravity and rotates.
In a preferred embodiment, whole hook length about 25 centimeters, width about 10 centimeters, thinnest part thickness 3.5 centimeters.Gib head cross sectional shape forms by a horizontal linear with a parabola y=0.01x2, and bill place wedge angle about 35 °, left and right hook angle is scalable ranges for (-9 °, 7 °).
Above telescopic extensions is preferably telescopic extensions, but it should be noted that, the negative maximum of this telescopic extensions can also be-10 ° ,-5 ° ,-8 ° etc., positive maximum can be the arbitrarily setting values such as 10 °, 5 °, 8 °, 3 °, 6 °, 12 °, and its common angular range can also meet lifting needs.
The implication of positive and negative angle is: left and right hook can form angle in both direction: open direction and shrinkage direction (overlapping).
In order to use this suspension hook 100 to lift body of wall, need to output in advance the gap 6 of 50mm*40mm at the two ends of the head piece 22 of body of wall lightgage steel joist, it should be noted that this gap size can need to carry out specific design according to construction, shown in final lifting mode such as Figure 13,14,15.
Concrete operations order is as described below:
1, holding suspension hook two handles with finger past extrapolation suspension hook, two gib heads can, to contract, just push away motionless when shifting setting position onto.
2, suspension hook is put into the lightgage steel joist of body of wall, as shown in figure 16 along the gap (50mm*40mm) of lightgage steel joist.
3, with holding tight two handles, inside grip pressure handle with strength, two gib heads can be flared out, owing to lightgage steel joist interior wall is filled with polyurethane foam, gib head can be produced certain resistance, the handle so need to exert oneself, under force, gib head can squeeze through polyurethane foaming layer and arrive precalculated position (such as Figure 14).In other embodiments, can filling other laminated heat-preserving materials etc. in lightgage steel joist, gib head then squeezes through lightgage steel joist.
4, plugging latch, latch must push up to the end, it is prevented that in hoisting process smooth out.(during lifting, left hook and the right side are hooked in by can inwardly extrude latch under weight action of gravity, and latch surface roughness is big, are difficult to smooth phenomenon occur).
5, lifting is started.
In a preferred embodiment:
1, holding suspension hook two handles with finger past extrapolation suspension hook, two gib heads can, to contract, just push away motionless when shifting setting position onto, and now hook angle in left and right is-9 °.
2, suspension hook is put into the lightgage steel joist of body of wall, as shown in figure 16 along the gap (50mm*40mm) of lightgage steel joist.
3, with holding tight two handles, inside grip pressure handle with strength, two gib heads can be flared out, owing to lightgage steel joist interior wall is filled with polyurethane foam, gib head can be produced certain resistance, so handle of need to exerting oneself, under force, gib head can squeeze through polyurethane foaming layer and arrive precalculated position (Figure 14), and now hook angle in left and right is 7 °, and two bill distances are 90mm.
4, plugging latch, latch must push up to the end, it is prevented that in hoisting process smooth out.(during lifting, left hook and the right side are hooked in by can inwardly extrude latch under weight action of gravity, and latch surface roughness is big, are difficult to smooth phenomenon occur).
5, lifting is started.
Finally should be noted that: above example only technical scheme in order to this case to be described is not intended to limit；Although this case being described in detail with reference to preferred embodiment, those of ordinary skill in the field are it is understood that still can modify to the detailed description of the invention of this case or portion of techniques feature carries out equivalent replacement；Without deviating from the spirit of this case technical scheme, it all should be encompassed in the middle of the technical scheme scope that this case is claimed.
Claims (14)
1. the jaw type suspension hook (100) being used for lifting assembled light steel wall, it is characterized in that, jaw type suspension hook includes U-shaped suspension ring (1), jointed shaft (2), left hook (3), right hook (4) and latch (5)
U-shaped suspension ring are inverted " u "-shaped, and two ends have circular hole, run through for jointed shaft；
Left hook, right hook bottom are gib head；
The upper end of left hook and right hook all offers the first hole, and jointed shaft runs through this first hole and left hook and right hook are hinged on the centre of U-shaped suspension ring, and jointed shaft is fixed on U-shaped suspension ring；The middle part of left hook and right hook is provided with the second hole, inserts or pull out for latch, and the second axially bored line is parallel with the first axially bored line；
Left hook and right hook are for being symmetrical arranged, and the outside side of left hook and right hook is all respectively provided with a jaw type handle, and two symmetric handles arrange formation jaw type handle arrangement.
2. a kind of jaw type suspension hook for lifting assembled light steel wall according to claim 1, it is characterized in that, left hook is single layer structure, and right hook is double-decker, right hook monolayer is consistent with left hook profile, right hook is provided with diplopore, double hook, wraps left hook in the middle of right hook, and a left side is hooked in the double-deck middle space of right hook and rotates.
3. a kind of jaw type suspension hook for lifting assembled light steel wall according to claim 1, it is characterised in that adopt the combination of any one or any scheme of below scheme:
Scheme 1:U type suspension ring are to be curved " u "-shaped by a round steel, its round-meshed annulus of two ends welded bands；
Scheme 2:U type suspension ring, left hook and right hook are that casting forms；
Scheme 3: one end of latch adopts iron chains or chain by ring, pore structure connecting hinge spindle or U-shaped suspension ring；
Scheme 4: jointed shaft is welded or is fixed on U-shaped suspension ring by bolt, riveting method, makes whole hook non-dismountable；
Scheme 5: right hook is single or multiple lift structure, left hook is hinged on jointed shaft with the laminating of right hook upper end.
4. a kind of jaw type suspension hook for lifting assembled light steel wall according to claim 1, it is characterised in that left hook, right hook main body are L-shaped structure, the outside of gib head bending is arc, and inner side is linear, and linear and arc cross formation bill.
5. a kind of jaw type suspension hook for lifting assembled light steel wall according to claim 1, it is characterised in that left hook is the same with the outer contour shape of right hook, and respectively with one handle, left hook is single layer structure, and thickness is 15mm；Right hook is double-decker, and its gross thickness is 35mm, and thick each 10mm, central cut-out 15mm are thick for both sides hook.
6. a kind of jaw type suspension hook for lifting assembled light steel wall according to claim 1, it is characterised in that latch adopts 45# round steel to process, after left and right hook opens up into set angle, inserts latch, it is prevented that left and right is hooked under weight action of gravity and rotates.
7. according to the arbitrary described a kind of jaw type suspension hook for lifting assembled light steel wall of claim 1 to 6, it is characterised in that gib head cross sectional shape is made up of a horizontal linear and a parabola y=0.01x2.
8. according to the arbitrary described a kind of jaw type suspension hook for lifting assembled light steel wall of claim 1 to 6, it is characterised in that the bill place wedge angle of gib head is 35 °.
9. according to the arbitrary described a kind of jaw type suspension hook for lifting assembled light steel wall of claim 1 to 6, it is characterized in that, angle between left and right hook is scalable to be ranged between-9 ° to 7 °, the angle formed when two hooks open is represented, the angle formed when negative value interval represents two hooks to contract on the occasion of interval.
10. the method for lifting assembled light steel wall, it is characterised in that adopting the arbitrary described a kind of jaw type suspension hook for lifting assembled light steel wall of the claims 1 to 9, step is as follows:
S1: output gap (6) at the two ends of the head piece (22) of body of wall lightgage steel joist；
S2: holding suspension hook two handles with finger past extrapolation suspension hook, two gib heads can, to contract, just push away motionless when shifting setting position onto, and now left and right hook angle reaches the first limit angle；
S3: suspension hook puts into the lightgage steel joist of body of wall along the gap of lightgage steel joist；
S4: with holding tight two handles, with strength inside grip pressure handle, two gib heads can be flared out, and under force, gib head can squeeze through and arrive precalculated position in lightgage steel joist, and now left and right hook angle reaches the second limit angle；
S5: plug latch, starts lifting.
11. a kind of method for lifting assembled light steel wall according to claim 10, it is characterized in that, in S4 step, with holding tight two handles, inside grip pressure handle with strength, two gib heads can be flared out, and owing to lightgage steel joist interior wall is filled with polyurethane foam, gib head can produce certain resistance, the handle so need to exert oneself, under force, gib head can squeeze through polyurethane foaming layer and arrive precalculated position, and now left and right hook angle reaches the second limit angle.
12. a kind of method for lifting assembled light steel wall according to claim 10, it is characterised in that the first described limit angle is 9 °；The second described limit angle is 7 °.
13. a kind of method for lifting assembled light steel wall according to claim 10, it is characterised in that described gap is of a size of 50mm*40mm.
14. a kind of method for lifting assembled light steel wall according to claim 10, it is characterised in that in S4 step, two bill distances are 90mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610232829.3A CN105731245A (en) | 2016-04-15 | 2016-04-15 | Clamp-type lifting hook and method for lifting fabricated light steel wall |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610232829.3A CN105731245A (en) | 2016-04-15 | 2016-04-15 | Clamp-type lifting hook and method for lifting fabricated light steel wall |
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| Publication Number | Publication Date |
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| CN105731245A true CN105731245A (en) | 2016-07-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610232829.3A Pending CN105731245A (en) | 2016-04-15 | 2016-04-15 | Clamp-type lifting hook and method for lifting fabricated light steel wall |
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| CN (1) | CN105731245A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107893539A (en) * | 2017-11-25 | 2018-04-10 | 中国二十二冶集团有限公司 | Steel construction assembled wall lifts antitorque fixing device and its construction method |
| CN110155890A (en) * | 2019-06-20 | 2019-08-23 | 河北水利电力学院 | A kind of architectural engineering tower crane with lock function |
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| US2670233A (en) * | 1952-04-18 | 1954-02-23 | Eastern Brass & Copper Co Inc | Lifting and lowering tongs |
| US4474400A (en) * | 1982-02-16 | 1984-10-02 | Toffolon Roger L | Lifting device for massive precast concrete wall units |
| CN201228194Y (en) * | 2008-06-24 | 2009-04-29 | 巨力索具股份有限公司 | Rod bundle vertical lifting clamp |
| CN201351075Y (en) * | 2008-12-18 | 2009-11-25 | 潍坊盛瑞动力机械科技有限公司 | Lifting tool for flywheel housing |
| CN202284390U (en) * | 2011-09-19 | 2012-06-27 | 沈阳远大铝业工程有限公司 | Hoisting machine tools for curtain wall unit plate |
| CN205527331U (en) * | 2016-04-15 | 2016-08-31 | 北京大工简筑科技有限公司 | A jaw type lifting hook for hoisting assembled lightweight steel wall body |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2670233A (en) * | 1952-04-18 | 1954-02-23 | Eastern Brass & Copper Co Inc | Lifting and lowering tongs |
| US4474400A (en) * | 1982-02-16 | 1984-10-02 | Toffolon Roger L | Lifting device for massive precast concrete wall units |
| CN201228194Y (en) * | 2008-06-24 | 2009-04-29 | 巨力索具股份有限公司 | Rod bundle vertical lifting clamp |
| CN201351075Y (en) * | 2008-12-18 | 2009-11-25 | 潍坊盛瑞动力机械科技有限公司 | Lifting tool for flywheel housing |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107893539A (en) * | 2017-11-25 | 2018-04-10 | 中国二十二冶集团有限公司 | Steel construction assembled wall lifts antitorque fixing device and its construction method |
| CN110155890A (en) * | 2019-06-20 | 2019-08-23 | 河北水利电力学院 | A kind of architectural engineering tower crane with lock function |
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