CN214834866U - Elevator shaft mounting structure of concrete spreader - Google Patents
Elevator shaft mounting structure of concrete spreader Download PDFInfo
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- CN214834866U CN214834866U CN202121504287.3U CN202121504287U CN214834866U CN 214834866 U CN214834866 U CN 214834866U CN 202121504287 U CN202121504287 U CN 202121504287U CN 214834866 U CN214834866 U CN 214834866U
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 24
- 239000010959 steel Substances 0.000 claims abstract description 24
- 239000000463 material Substances 0.000 claims description 6
- 238000009826 distribution Methods 0.000 abstract description 8
- 230000006378 damage Effects 0.000 abstract description 6
- 238000009434 installation Methods 0.000 abstract description 3
- 239000004744 fabric Substances 0.000 description 19
- 230000008859 change Effects 0.000 description 3
- 230000003014 reinforcing effect Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000009435 building construction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
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Abstract
本实用新型涉及一种混凝土布料机电梯井安装结构，其包括电梯井以及设置于电梯井内的布料机，所述布料机包括底座、设置于所述底座上的机身以及活动连接于所述机身的转臂，所述机身沿电梯井的高度方向设置；所述电梯井内设置有预留口，所述底座的一端设置于所述预留口，所述预留口处设置有塞紧件；所述底座的一端搭设于所述电梯井的门洞，所述电梯井的门洞设置有若干个顶撑，所述顶撑的一端抵接于所述电梯井的门洞梁，另一端抵接于所述底座；所述电梯井内还设置有井字固定架。本实用新型通过将布料机安装在电梯井内，以替代将布料机装设在待浇筑楼面，从而减少待浇筑楼面的局部荷载力，且大大减小了对待浇筑楼面的钢筋分布的破坏。
The utility model relates to an elevator shaft installation structure for a concrete placing machine, which comprises an elevator shaft and a placing machine arranged in the elevator shaft. The placing machine comprises a base, a body arranged on the base and a machine movably connected to the machine. The fuselage is arranged along the height direction of the elevator shaft; a reserved opening is arranged in the elevator shaft, one end of the base is arranged at the reserved opening, and a plug is arranged at the reserved opening. One end of the base is erected on the doorway of the elevator shaft, and the doorway of the elevator shaft is provided with a number of top braces, one end of the top brace is abutted against the doorway beam of the elevator shaft, and the other end is in contact with the doorway beam of the elevator shaft. on the base; a well-shaped fixing frame is also arranged in the elevator shaft. The utility model installs the placing machine in the elevator shaft instead of installing the placing machine on the floor to be poured, thereby reducing the local load force of the floor to be poured, and greatly reducing the damage to the distribution of steel bars on the floor to be poured .
Description
Technical Field
The utility model belongs to the technical field of the technique of construction and specifically relates to a concrete spreader elevartor shaft mounting structure is related to.
Background
The concrete spreader is a special engineering mechanical device for spreading the pre-stirred concrete on a designated working surface, and can quickly and accurately deliver the material to each point to be poured.
At present, when the floor of building construction is poured, a concrete spreader is generally erected on the floor to be poured for the building with higher floor so as to pour the floor.
However, directly erecting the concrete spreader on the floor to be poured not only destroys the distribution of the reinforcing bars on the floor to be poured, but also makes it difficult to fix the concrete spreader.
SUMMERY OF THE UTILITY MODEL
Establish in order to improve current cloth frame and just be difficult to fixed phenomenon in the distribution of steel reinforcement that exists destruction floor on waiting to pour the floor, the utility model provides a concrete spreader elevartor shaft mounting structure.
The utility model provides a concrete spreader elevartor shaft mounting structure adopts following technical scheme:
an elevator shaft mounting structure of a concrete spreader comprises an elevator shaft and a spreader arranged in the elevator shaft, wherein the spreader comprises a base, a body arranged on the base and a rotating arm movably connected to the body, and the body is arranged along the height direction of the elevator shaft; a reserved opening is formed in the elevator shaft, one end of the base is arranged at the reserved opening, and a plugging piece used for plugging and fixing the base is arranged at the reserved opening; one end, far away from the reserved opening, of the base is erected in a door opening of the elevator shaft, the door opening of the elevator shaft is provided with a plurality of top supports used for abutting against the base, one end of each top support abuts against a door opening beam of the elevator shaft, and the other end of each top support abuts against the base; and a plurality of groups of # -shaped fixing frames for fixing the machine body are further arranged in the elevator shaft.
Through adopting above-mentioned technical scheme, when installing the cloth machine, through the base with the cloth machine and the fuselage is fixed respectively to make the fixed more firm of cloth machine. Namely, when the base of the distributing machine is fixed, one end of the base, which is erected in a door opening of an elevator shaft, is abutted tightly through the top support, so that the base of the distributing machine is firmly abutted tightly by the top support. And the other end of the base is plugged in the reserved opening through the plugging piece, so that the base of the distributing machine is not easy to deviate. Then fix the fuselage of cloth machine through the # -shaped mount, carry out the auxiliary fixation to the cloth machine from this, make the fixed of cloth machine more firm, and reduced the destruction to the floor, made things convenient for the fixed of cloth machine. In addition, install the cloth machine in the elevator shaft to replace installing the cloth machine at the floor of waiting to pour, thereby reduce the local loading power of waiting to pour the floor, and reduced the destruction of treating the reinforcing bar distribution of pouring the floor greatly.
Preferably, the plugging piece comprises a wooden plug for plugging the base, and one end of the wooden plug is provided with a chamfer.
Through adopting above-mentioned technical scheme, insert the one end of reserving the mouth through the wooden plug to the base and carry out the stopper tight fixedly, make things convenient for the staff to fix the base of cloth machine from this, simultaneously, the chamfer is established to the one end of wooden plug to in the mouth is reserved with the wooden plug to the staff.
Preferably, the top support comprises a steel pipe and a first screw rod arranged at one end of the steel pipe, one end of the first screw rod is inserted into the steel pipe, the first screw rod is in threaded fit with a limit nut, and the end of the steel pipe is provided with a limit sleeve for abutting against the limit nut.
Through adopting above-mentioned technical scheme, during the base of fixed cloth machine, conflict the elevartor shaft door opening roof beam with the one end of steel pipe, and first screw rod then inserts the other end of steel pipe, through the stop nut on the first screw rod and the stop collar cooperation on the steel pipe, in order to restrict first screw rod transition and insert the steel pipe, and stretch out the one end butt base of steel pipe with first screw rod, through rotating stop nut, restrict the rotation of first lead screw simultaneously, so that the relative first lead screw motion of stop nut, support the base tightly until first lead screw, realize supporting tightly fixedly of base from this.
Preferably, one end of the first screw is provided with an abutting portion, and the abutting portion is provided with a batten for abutting against the base.
Through adopting above-mentioned technical scheme, add the flitch in order to increase the area of contact between first screw rod and the base to the butt power that makes the base receive is more even.
Preferably, the side wall of the limiting nut is provided with a knocking part.
Through adopting above-mentioned technical scheme, add the portion of strikeing so that the staff rotates stop nut through the mode of strikeing to support the base tightly fixedly.
Preferably, the # -shaped fixing frame comprises four fixing sleeves, second screws are arranged at two ends of each fixing sleeve, one ends of the second screws are inserted into the fixing sleeves, and abutting nuts used for abutting against the end portions of the fixing sleeves are matched with the threads of the second screws in a matched mode.
Through adopting above-mentioned technical scheme, support two lateral walls of tight elevartor shaft through the second screw rod with the fixed sleeving both ends to can make the fixed sleeving fix in the elevartor shaft, and carry on spacingly by four fixed sleeving mutually support four sides of fuselage, thereby make the difficult emergence of fuselage rock and shift, improved cloth machine's stability.
Preferably, a connecting assembly for connecting the two fixing sleeves to each other is further provided between the two adjacent fixing sleeves.
Through adopting above-mentioned technical scheme, connect through coupling assembling between two adjacent fixed sleeving to increase the connection stability of # -shaped mount.
Preferably, the connecting assembly comprises a connecting seat, two mutually perpendicular sleeves are arranged on the connecting seat, and two adjacent fixing sleeves are respectively and correspondingly arranged on the two sleeves in a penetrating manner.
Through adopting above-mentioned technical scheme, connect through the connecting seat between two adjacent fixed sleeving to carry out mutual restraint to two adjacent fixed sleeving, make two adjacent fixed sleeving be difficult for taking place the off normal.
To sum up, the utility model discloses a following at least one useful technological effect:
1. the distributing machine is arranged in the elevator shaft to replace the distributing machine arranged on the floor to be poured, so that the local load force of the floor to be poured is reduced, and the damage to the distribution of the steel bars of the floor to be poured is greatly reduced;
2. one end of the base inserted into the reserved opening is tightly plugged and fixed through the wooden plug, so that the base of the material distributing machine is fixed by workers conveniently.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention;
fig. 2 is a partial cross-sectional view of the present invention;
fig. 3 is a schematic structural view of the material distributor of the present invention;
FIG. 4 is an enlarged view of portion A of FIG. 2;
FIG. 5 is a schematic structural view of the middle support of the present invention;
fig. 6 is a schematic structural view of the # -shaped fixing frame of the present invention.
Description of reference numerals: 1. building; 101. building a floor to be poured; 2. an elevator shaft; 3. a material distributor; 31. a base; 311. a telescopic leg; 3111. an outer cylinder; 3112. an inner rod; 312. a connecting rod; 32. a body; 33. a rotating arm; 4. a door opening; 5. reserving a port; 6. fixing the bolt; 7. a fixed part; 8. supporting; 81. a steel pipe; 82. a first screw; 83. a limit nut; 84. a limiting sleeve; 85. a knocking portion; 86. an abutting portion; 9. wood block; 10. a wooden plug; 11. fixing the pipe sleeve; 12. a connecting seat; 13. a sleeve; 14. a second screw; 15. the nut is tightly propped.
Detailed Description
The present invention will be described in further detail with reference to the accompanying fig. 1 to 6.
An elevator shaft mounting structure of a concrete spreader, referring to fig. 1, comprises an elevator shaft 2 preset on a building and a spreader 3 installed in the elevator shaft 2. Wherein, 2 transversal personally submitting rectangles settings of elevartor shaft, and 2 vertical distributions of elevartor shaft. In this embodiment, the elevator shaft 2 is preset for the building 1 in the construction process.
Referring to fig. 1 and 2, a plurality of door openings 4 are opened at a sidewall of an elevator shaft 2, and each door opening 4 corresponds to a floor of a building 1. It should be understood that the door opening 4 is an elevator entrance for objects to and from the elevator in each floor.
Referring to fig. 2 and 3, the distributing machine 3 includes a base 31, a vertically arranged body 32, and a rotating arm 33 movably connected to the body 32. The base 31 includes two parallel telescopic legs 311, a connecting rod 312 is connected between the two telescopic legs 311, and the number of the connecting rods 312 is two. The two connecting rods 312 and the two telescopic legs 311 are surrounded to form a mounting part in a shape like a Chinese character 'kou', and the bottom end of the machine body 32 is fixedly connected with the mounting part through a high-strength bolt. The fuselage 32 is vertically distributed along the elevator shaft 2, the top of the fuselage 32 extends out of the elevator shaft 2, and the swivel arms 33 are rotatably mounted at the top of the fuselage 32 so as to distribute the floor 101 to be poured.
Referring to fig. 2 and 3, when installing the distributing machine 3, the base 31 is first installed, that is, one end of the two telescopic legs 311 of the base 31 is set up in the door opening 4 of the elevator shaft 2, and the other end is installed on the side wall of the elevator shaft 2. In this embodiment, referring to fig. 4, the sidewall of the elevator shaft 2 is provided with a reserved opening 5 for inserting the telescopic leg 311, one end of the telescopic leg 311 is set up in the door opening 4 of the elevator shaft 2, and the other end is inserted into the reserved opening 5, so as to suspend the base 31 in the elevator shaft 2.
Specifically, referring to fig. 2 and 3, the telescopic leg 311 includes an outer barrel 3111 disposed in a hollow manner and an inner lever 3112 slidably connected to the sleeve 13, the outer barrel 3111 is sleeved on the inner lever 3112, and the inner lever 3112 is slidable relative to the outer barrel 3111. In this embodiment, two inner bars 3112 are provided, and the two inner bars 3112 are inserted into both ends of the outer cylinder 3111. Offer the trompil (not shown in the figure) that runs through the both sides of urceolus 3111 on the urceolus 3111, fixing bolt 6 is worn to be equipped with by the trompil, the perforation (not shown in the figure) that a plurality of confession bolts were worn to establish are seted up to the lateral wall of interior pole 3112, a plurality of perforation are along the equidistant distribution of length direction of interior pole 3112, after one of them perforation aligns with the trompil, through passing the trompil with the bolt and perforating, and use the nut to tighten the nut, thereby realize the fixed of interior pole 3112 and urceolus 3111, the length that from this makes flexible leg 311 can keep fixed.
It can be understood that, referring to fig. 2 and 3, when installing the distributing machine 3 in the elevator shaft 2, it is first necessary to install the base 31 in the elevator shaft 2 in a suspended manner, by pulling out and fixing the inner bars 3112 at the two ends of the telescopic legs 311, one end of the telescopic legs 311 is set up in the door opening 4 of the elevator shaft 2, the other end is inserted into the reserved opening 5 (see fig. 4), and then the base 31 is fixed, and then the body 32 of the distributing machine 3 is installed and fixed.
Referring to fig. 2 and 4, in order to enable the base 31 to be stably fixed within the elevator shaft 2, a plugging member for plugging the telescopic leg 311 is further provided at the reserved opening 5. The tight piece of stopper is including stopping up at the wooden plug 10 of reserving mouthful 5, and the cross-section of wooden plug 10 is L shape setting, and one side of wooden plug 10 is equipped with the chamfer to be convenient for insert wooden plug 10 and reserve mouthful 5, the one end that inserts reservation mouthful 5 with flexible leg 311 from this carries out the stopper tightly fixedly.
Meanwhile, a fixing portion 7 is provided at one end of the telescopic leg 311, which is set up in the door opening 4 of the elevator shaft 2, and the fixing portion 7 is fixed at the door opening 4 of the elevator shaft 2 by a bolt.
Referring to fig. 2 and 5, a plurality of top supports 8 for abutting against the telescopic legs 311 are provided at the door opening 4 of the elevator shaft 2. In this embodiment, the number of the top braces 8 is two, and the two top braces 8 respectively and correspondingly abut against the two telescopic legs 311. In other embodiments, the number of the top struts 8 may also be four, two of which are used for abutting against the telescopic legs 311 to limit the up-and-down movement of the telescopic legs 311, and the other two of which are used for limiting the left-and-right movement of the two telescopic legs 311.
Specifically, referring to fig. 2 and 5, the top brace 8 includes a vertical steel pipe 81 and a first screw 82 inserted into the bottom end of the steel pipe 81, the top of the steel pipe 81 abuts against the beam of the door opening 4 of the elevator shaft 2 (the beam at the top of the door opening 4), and the bottom end of the first screw 82 abuts against the inner bar 3112 of the telescopic leg 311.
Referring to fig. 3 and 5, the first screw 82 is in threaded fit with a limit nut 83, a limit sleeve 84 is welded at the bottom end of the steel pipe 81, and the limit sleeve 84 is used for abutting the limit nut 83 and is in abutting fit with the limit sleeve 84 through the limit nut 83, so that the length of the first screw 82 inserted into the steel pipe 81 is limited. Meanwhile, the length of the first screw 82 inserted into the steel pipe 81 is adjusted by rotating the limit nut 83 to change the position of the limit nut 83 on the first screw 82. It can be understood that when the telescopic leg 311 needs to be tightly pressed, the rotatable limiting nut 83 moves upward relative to the first screw 82 and limits the rotation of the first screw 82, and the limiting sleeve 84 at the bottom end of the steel pipe 81 limits the upward movement of the limiting nut 83, so that the first screw 82 moves downward relative to the limiting nut 83, and the telescopic leg 311 is tightly pressed.
Referring to fig. 5, in order to facilitate the worker to rotate the limit nut 83, a striking part 85 is provided at a side wall of the limit nut 83 so that the worker rotates the limit nut 83 by striking.
In addition, referring to fig. 5, a metal abutting portion 86 is welded to the bottom end of the first screw rod 82, and the abutting portion 86 is arranged like an "Jiong". The abutting portion is further provided with a rectangular parallelepiped batten 9 (see fig. 2), and the batten 9 abuts against the telescopic leg 311 of the base 31. In this embodiment, the abutting portions of the two top supports 8 share one batten 9. That is, two ends of the batten 9 are respectively overlapped on the two telescopic legs 311, and the abutting parts of the two top braces 8 are respectively buckled with two ends of the batten 9, so that the first screws 82 of the two top braces 8 are not easy to rotate relatively.
In addition, referring to fig. 6, a plurality of groups of # -shaped fixing frames for fixing the machine body 32 are also installed in the elevator shaft 2. Specifically, the # -shaped fixing frame comprises four fixing pipe sleeves 11, the four fixing pipe sleeves 11 are mutually erected to form a # -shape, and a connecting assembly is further arranged between every two adjacent fixing pipe sleeves 11, wherein the connecting assembly is used for enabling the two adjacent fixing pipe sleeves 11 to be mutually connected.
Specifically, referring to fig. 6, the connecting assembly includes a connecting base 12 and two sleeves 13 welded on the connecting base 12, the two sleeves 13 are perpendicular to each other, and two adjacent fixing pipe sleeves 11 respectively and correspondingly penetrate through the two sleeves 13, thereby realizing the connection of the two adjacent fixing pipe sleeves 11.
Referring to fig. 6, the fixing tube housing 11 is provided at both ends thereof with second screws 14, and one end of each second screw 14 is inserted into the fixing tube housing 11. The second screw 14 is screwed with a tightening nut 15, and the tightening nut 15 is used for abutting against the end of the fixing pipe sleeve 11, so as to limit the length of the second screw 14 inserted into the fixing pipe sleeve 11, and the length of the second screw 14 inserted into the fixing pipe sleeve 11 is adjusted by rotating the tightening nut 15. Meanwhile, the length of the second screw 14 inserted into the fixing pipe sleeve 11 is adjusted, so that one end of the second screw 14 abuts against the side wall of the elevator shaft 2, the fixing pipe sleeve 11 is abutted by the matching of the second screws 14 at the two ends of the fixing pipe sleeve 11, so that the fixing pipe sleeve 11 is fixed to the elevator shaft 2, and the limit and the fixation of the machine body 32 are realized by the matching of the four fixing pipe sleeves 11.
The utility model discloses an implement the principle and do: when installing cloth machine 3, erect base 31 of cloth machine 3 in elevartor shaft 2 at first, the one end of base 31 is set up at elevartor shaft 2 door opening 4, and the other end inserts and reserves mouthful 5, then it is fixed to support tightly fixedly at the one end of 2 door openings 4 of elevartor shaft base 31 through the shore 8 to cloth machine 3's base 31, and simultaneously, base 31 inserts and reserves the one end of mouthful 5 and carries out the jam through wooden plug 10 to it is fixed to make base 31. After base 31 is fixed, with cloth machine 3 with change the wall installation, the installation is accomplished the back, again with the vertical elevator shaft 2 that inserts of fuselage 32, bear on base 31 up to the bottom of fuselage 32, change the wall and be located the floor top of waiting to pour, then fix fuselage 32 and base 31 through high strength bolt, stand by body 32 and base 31 fixed back, consolidate fuselage 32 through the # -shaped mount to realize fuselage 32's fixed. Install cloth machine 3 in elevartor shaft 2 in this embodiment to replace installing cloth machine 3 at waiting to pour floor 101, thereby reduce the local loading power of waiting to pour floor 101, and reduced the destruction of treating the reinforcing bar distribution of pouring floor 101 greatly.
Above is the preferred embodiment of the utility model, not limit according to this the utility model discloses a protection scope, the event: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.
Claims (8)
1. The utility model provides a concrete spreader elevartor shaft mounting structure which characterized in that: the elevator car elevator comprises an elevator shaft (2) and a material distributor (3) arranged in the elevator shaft (2), wherein the material distributor (3) comprises a base (31), a car body (32) arranged on the base (31) and a rotating arm (33) movably connected to the car body (32), and the car body (32) is arranged along the height direction of the elevator shaft (2);
a reserved opening (5) is formed in the elevator shaft (2), one end of the base (31) is arranged at the reserved opening (5), and a plugging piece used for plugging and fixing the base (31) is arranged at the reserved opening (5); one end, far away from the reserved opening (5), of the base (31) is erected in a door opening (4) of the elevator shaft (2), a plurality of jacking struts (8) used for abutting against the base (31) are arranged in the door opening (4) of the elevator shaft (2), one end of each jacking strut (8) abuts against a beam of the door opening (4) of the elevator shaft (2), and the other end of each jacking strut abuts against the base (31); a plurality of groups of # -shaped fixing frames used for fixing the machine body (32) are further arranged in the elevator shaft (2).
2. The concrete spreader elevator shaft mounting structure of claim 1, wherein: the plugging piece comprises a wooden plug (10) used for plugging the base (31), and one end of the wooden plug (10) is provided with a chamfer.
3. The concrete spreader elevator shaft mounting structure of claim 1, wherein: the shore (8) includes steel pipe (81) and set up in first screw rod (82) of the one end of steel pipe (81), the one end of first screw rod (82) is inserted steel pipe (81), first screw rod (82) screw-thread fit has stop nut (83), the tip of steel pipe (81) is provided with and is used for supplying stop collar (84) of stop nut (83) butt.
4. The concrete spreader elevator shaft mounting structure of claim 3, wherein: one end of the first screw rod (82) is provided with an abutting part (86), and the abutting part (86) is provided with a batten (9) used for abutting against the base (31).
5. The concrete spreader elevator shaft mounting structure of claim 4, wherein: and the side wall of the limiting nut (83) is provided with a knocking part (85).
6. The concrete spreader elevator shaft mounting structure of claim 1, wherein: the # -shaped fixing frame comprises four fixing sleeves, wherein second screw rods (14) are arranged at two ends of each fixing sleeve, one ends of the second screw rods (14) are inserted into the fixing sleeves, and abutting nuts (15) used for abutting against the end portions of the fixing sleeves are matched with the threads of the second screw rods (14).
7. The concrete spreader elevator shaft mounting structure of claim 6, wherein: and a connecting assembly used for connecting the two fixing sleeves with each other is also arranged between the two adjacent fixing sleeves.
8. The concrete spreader elevator shaft mounting structure of claim 7, wherein: the connecting assembly comprises a connecting seat (12), two mutually perpendicular sleeves (13) are arranged on the connecting seat (12), and two adjacent fixing sleeves correspondingly penetrate through the two sleeves (13) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121504287.3U CN214834866U (en) | 2021-07-01 | 2021-07-01 | Elevator shaft mounting structure of concrete spreader |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121504287.3U CN214834866U (en) | 2021-07-01 | 2021-07-01 | Elevator shaft mounting structure of concrete spreader |
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| CN214834866U true CN214834866U (en) | 2021-11-23 |
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| CN202121504287.3U Active CN214834866U (en) | 2021-07-01 | 2021-07-01 | Elevator shaft mounting structure of concrete spreader |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115522745A (en) * | 2022-09-02 | 2022-12-27 | 中交四公局第三建筑工程有限公司 | Elevator well self-climbing type concrete spreader for high-rise building |
-
2021
- 2021-07-01 CN CN202121504287.3U patent/CN214834866U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115522745A (en) * | 2022-09-02 | 2022-12-27 | 中交四公局第三建筑工程有限公司 | Elevator well self-climbing type concrete spreader for high-rise building |
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