CN111676997A - Tower crane foundation embedded positioning auxiliary tool and tower crane foundation embedded plate positioning method - Google Patents
Tower crane foundation embedded positioning auxiliary tool and tower crane foundation embedded plate positioning method Download PDFInfo
- Publication number
- CN111676997A CN111676997A CN202010721221.3A CN202010721221A CN111676997A CN 111676997 A CN111676997 A CN 111676997A CN 202010721221 A CN202010721221 A CN 202010721221A CN 111676997 A CN111676997 A CN 111676997A
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- tower crane
- crane foundation
- foundation embedded
- anchoring
- rod body
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/32—Foundations for special purposes
- E02D27/42—Foundations for poles, masts or chimneys
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/32—Foundations for special purposes
- E02D27/44—Foundations for machines, engines or ordnance
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- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
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- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Jib Cranes (AREA)
Abstract
The invention provides a tower crane foundation embedded positioning auxiliary tool and a tower crane foundation embedded plate positioning method, which comprise the following steps: the telescopic positioning rod comprises a first rod body and a second rod body, wherein a sliding groove is formed in the first rod body, the second rod body is telescopic in the sliding groove, a threaded hole is formed in the first rod body, a first fastening bolt is screwed in the threaded hole, and scale marks are marked on the second rod body; the first anchoring clamping groove and the second anchoring clamping groove are respectively fixed at two ends of the telescopic positioning rod, and a second fastening bolt is screwed on the first anchoring clamping groove; a third fastening bolt is arranged on the second anchoring clamping groove; and the level bubble is fixed on the first rod body. The invention solves the problem of accurate positioning of the tower crane foundation embedded plate in the embedding process, does not need to repeatedly check the size, and solves the problems of low efficiency and more time consumption in the tower crane foundation embedded plate embedding process.
Description
Technical Field
The invention relates to the technical field of building construction, in particular to an auxiliary tool for positioning pre-buried plates of a tower crane foundation and a method for positioning pre-buried plates of the tower crane foundation.
Background
In the traditional installation of tower crane embedded parts, a field welding tool is adopted for positioning, and accurate positioning needs to adopt a measuring tape to carry out recheck of each size for multiple times, so that the efficiency is low, and a large reworking possibility exists; the average installation time is 3-4 hours, the efficiency is low, the installation is complex, and the positioning is inaccurate. Because the size of the pre-buried foundation of the tower crane is not uniform, no applicable sizing tool exists in the market.
Disclosure of Invention
In view of the above situation, the invention provides a length-adjustable tower crane foundation embedded plate positioning auxiliary device and a tower crane foundation embedded plate positioning method, which solve the defects that the existing tower crane foundation embedded part is low in installation construction efficiency, complex in installation, inaccurate in positioning and temporarily unavailable in market for a sizing tool applicable to installation of embedded parts at different distances.
In order to achieve the purpose, the invention adopts the technical scheme that: the utility model provides a pre-buried location appurtenance of tower crane basis, includes:
the telescopic positioning rod comprises a first rod body and a second rod body, wherein a sliding groove is formed in the first rod body, the second rod body is telescopic in the sliding groove, a threaded hole is formed in the first rod body, a first fastening bolt is screwed in the threaded hole and abuts against the second rod body through the first fastening bolt for positioning, and a scale mark is marked on the second rod body;
the first anchoring clamping groove is used for clamping a tower crane foundation embedded plate, the first anchoring clamping groove is fixed with the first rod body at the first end of the telescopic positioning rod, a second fastening bolt is screwed on the first anchoring clamping groove, and the first anchoring clamping groove abuts against the tower crane foundation plate through the second fastening bolt for positioning;
a second anchoring clamping groove for clamping the tower crane foundation embedded plate, wherein the second anchoring clamping groove is fixed with the end part of the second rod body at the second end of the telescopic positioning rod, and a third fastening bolt is screwed on the second anchoring clamping groove and abuts against the tower crane foundation embedded plate through the third fastening bolt for positioning;
and the level bubble is fixed on the first rod body.
In the embodiment of the invention, the first anchoring clamping groove comprises two first anchoring plates which are oppositely arranged up and down, a space for clamping the pre-buried plate of the tower crane foundation is defined between the two first anchoring plates, and one first anchoring plate is provided with a first screw hole for the second fastening bolt to be screwed.
In the embodiment of the invention, the second anchoring clamping groove comprises two second anchoring plates which are oppositely arranged up and down and a connecting plate which is connected between the two second anchoring plates, a space for clamping the tower crane foundation embedded plate is defined between the two first anchoring plates, one second anchoring plate is provided with a second screw hole for the threaded connection of a third fastening bolt, and the connecting plate is fixed with the end part of the second rod body.
In the embodiment of the invention, the number of the leveling bubbles is two, and the leveling bubbles are respectively fixed on the top and the side of the first rod body.
The invention also provides a tower crane foundation embedded plate positioning method, which comprises the following steps:
providing four groups of tower crane foundation pre-buried positioning auxiliary tools;
providing four tower crane foundation embedded plates which are arranged in a rectangular shape;
according to the distance between two adjacent tower crane foundation embedded plates, adjusting the length of each group of second rod bodies extending out of the first rod body by contrasting with the scale marks so that the length of the tower crane foundation embedded positioning auxiliary tool is matched with the distance between two adjacent tower crane foundation embedded plates, and screwing the first fastening bolt to position the second rod bodies after the length of the second rod bodies is adjusted;
inserting a first anchoring clamping groove and a second anchoring clamping groove of each group of tower crane foundation embedded positioning auxiliary tools into two adjacent tower crane foundation embedded plates respectively;
integrally placing the tower crane foundation embedded plate formed by splicing and the tower crane foundation embedded positioning auxiliary tool to the installation position of the tower crane foundation embedded plate;
leveling the four tower crane foundation embedded plates by using the leveling bubble;
after the four tower crane foundation embedded plates are leveled, the second fastening bolts and the third fastening bolts are adjusted in a rotating mode, the first anchoring clamping grooves and the second anchoring clamping grooves are fixed with the tower crane foundation embedded plates respectively, and the tower crane foundation embedded plates are fixed with the lower part structures.
In the embodiment of the invention, two positioning auxiliary tools are embedded in each group of tower crane foundations.
Due to the adoption of the technical scheme, the invention has the following beneficial effects:
(1) two ends of the telescopic positioning rod are fixed with the tower crane foundation embedded plates through fastening bolts, and the telescopic positioning rod structure with adjustable length is arranged, so that the problem of accurate positioning of the tower crane foundation embedded plates in the embedding process is solved, and the telescopic positioning rod structure can be suitable for positioning and mounting the tower crane foundation embedded plates with different distances; the telescopic locating lever is marked with scale marks, so that the extension length of the second rod body can be conveniently adjusted, the size does not need to be checked repeatedly, and the problems of low efficiency and time consumption and more in the pre-buried process of the tower crane foundation pre-buried plate are solved.
(2) The leveling bubble is arranged on the telescopic positioning rod, so that the problem of the level of the tower crane foundation embedded plate in the installation and positioning process can be conveniently solved, and the installation precision is improved.
Drawings
FIG. 1 is a schematic elevation view of an auxiliary tool for positioning the tower crane foundation embedded.
FIG. 2 is a schematic plan view of the tower crane foundation embedded positioning auxiliary tool.
FIG. 3 is a schematic plane view of the tower crane foundation embedded positioning auxiliary tool in an extended state.
Fig. 4 is an enlarged view of a portion of fig. 3 a of the present invention.
FIG. 5 is a schematic view of the use state of the tower crane foundation embedded positioning auxiliary tool.
Fig. 6 is a partially enlarged schematic view of the invention at B in fig. 5.
The correspondence of reference numerals to components is as follows:
a telescopic positioning rod 1; a first rod 11; a chute 111; a second fastening bolt 112; a second stick body 12; a first vial 13; a second vial 14; a first anchoring slot 2; a second anchoring slot 3; a first anchor plate 21; a first screw hole 211; the second fastening bolt 22; a second anchor plate 31; a second screw hole 311; a connecting plate 32; the third fastening bolt 33; and (4) pre-buried plates of a tower crane foundation.
Detailed Description
To facilitate an understanding of the present invention, the following description is made in conjunction with the accompanying drawings and examples.
Referring to fig. 1 and 5, the present invention provides an auxiliary tool for positioning a tower crane foundation embedded, including: telescopic locating lever 1, locate first anchor draw-in groove 2 and second anchor draw-in groove 3 and the air level at telescopic locating lever 1 both ends, first anchor draw-in groove 2, second anchor draw-in groove 3 are used for being connected fixedly with tower crane basis pre-buried board 3, and the air level is used for leveling telescopic locating lever 1 and then carries out the leveling to tower crane basis pre-buried board 4 be connected with telescopic locating lever 1. According to the invention, the length of the telescopic positioning rod 1 can be adjusted according to the distance between two adjacent tower crane foundation embedded plates 4, so that the length of the telescopic positioning rod 1 is adapted to the distance between two adjacent tower crane foundation embedded plates 4, and the defect that in the prior art, the size is rechecked for many times by adopting a measuring tape during the installation of a tower crane foundation embedded part, and the efficiency is low is avoided, thereby improving the installation precision and the installation efficiency of the tower crane foundation embedded plates 4.
Specifically, as shown in fig. 3, the telescopic positioning rod 1 includes a first rod 11 having a sliding slot 111 therein and a second rod 12 extending in the sliding slot 111; the first rod body 11 is provided with a threaded hole, a first fastening bolt 112 is screwed in the threaded hole and abuts against the second rod body 12 through the first fastening bolt 112 for positioning, and the second rod body 12 is marked with scale marks. In the embodiment of the invention, the scale marks can be conveniently read according to the distance between two adjacent tower crane foundation embedded plates 4, so that when the length of one telescopic positioning rod 1 is adjusted, the length of the next telescopic positioning rod 1 can be directly adjusted, and the construction efficiency and the accuracy of length adjustment are improved.
Preferably, telescopic locating lever 1 adopts the preparation of high strength aluminum alloy, can alleviate whole weight and guarantee telescopic locating lever 1's rigidity and flexure resistance requirement.
In the embodiment of the invention, the length of the first rod body 11 is 1.4m, the length of the second rod body 12 is 0.6m, the length adjustment range of the telescopic positioning rod 1 is 1.4-2 m, and the scale marks on the second rod body 12 are marked from the starting end to 140cm and gradually marked inwards to 200 cm. The lengths of the first rod body 11 and the second rod body 12 in the telescopic positioning rod 1 are not limited to the length, and the technical personnel in the field can adjust the lengths of the first rod body 11 and the second rod body 12 according to the embedded size of a common tower crane in the market, so that the auxiliary installation of adjustment of different regions and different foundations can be realized.
In the embodiment of the invention, as shown in fig. 2 and 3, a first level bubble 13 is arranged at the top of the telescopic positioning rod 1; a second level bubble 14 is arranged at the side part of the telescopic positioning rod 1; the arrangement of the first level bubble 13 and the second level bubble 14 can ensure the top level and the side level of the telescopic positioning rod, so that the installation levelness of the tower crane foundation embedded plate 4 is ensured, and the installation precision is improved; first air level 13, second air level 14 are the bar air level, also can set up universal circular air level on first body of rod 11, and compare with the levelness that the bar air level only can reflect a direction, universal circular air level can reflect the levelness of telescopic locating lever 1 each direction.
The first anchoring clamping groove 2 is fixed with the first rod body 11 at the first end of the telescopic positioning rod 1, a second fastening bolt 22 is screwed on the first anchoring clamping groove 2, and the second fastening bolt 22 abuts against the tower crane foundation embedded plate 4 for positioning; specifically, first anchor draw-in groove 2 includes two first anchor boards 21 that relative up-down set up, two the space that forms the centre gripping between the first anchor board 21 the pre-buried board 4 of tower crane basis is defined, one offer the confession on the first anchor board 21 the first screw 211 of second fastening bolt 22 spiro union. Preferably, the distance between the first anchor plates 21 is slightly greater than or equal to the thickness of the tower crane foundation embedded plate 4, and the end part of the second fastening bolt 22 abuts against the tower crane foundation embedded plate 4, so that the tower crane foundation embedded plate 4 can be clamped between the two first anchor plates 21, the installation firmness is improved, and the tower crane foundation embedded plate 4 is prevented from shaking to influence the installation accuracy.
The second anchoring clamping groove 3 is fixed with the end part of the second rod body 12 at the second end of the telescopic positioning rod 1, a third fastening bolt 32 is screwed on the second anchoring clamping groove 3, and the third fastening bolt 32 abuts against the tower crane foundation embedded plate 4 for positioning; specifically, second anchor draw-in groove 3 includes two second anchor boards 31 that relative up-down set up and connects in two connecting plate 32 between the second anchor board 31, two the delimitation forms the centre gripping between the first anchor board 31 the space of tower crane basis built-in panel 4, one set up the second screw 311 that supplies third fastening bolt 32 spiro union on the second anchor board 31, connecting plate 31 with the end fixing of the second body of rod 12. Preferably, the distance between the two second anchoring plates 31 is slightly larger than or equal to the thickness of the tower crane foundation embedded plate 4, and the end part of the third fastening bolt 32 abuts against the tower crane foundation embedded plate 4, so that the tower crane foundation embedded plate 4 can be clamped between the two second anchoring plates 31, the installation firmness is improved, and the tower crane foundation embedded plate is prevented from shaking to influence the installation precision; connect the tip of two second anchor boards 31 and the second body of rod 12 through connecting plate 32 for the fastening of being connected between second anchor board 31 and the second body of rod 12 improves telescopic locating lever 1's overall structure stability.
In the embodiment of the present invention, the first anchoring slot 2 may also have the same structure as the second anchoring slot 3, and both include an anchoring plate and a connecting plate. In the embodiment of the present invention, the second screw hole 211 and the third screw hole 311 are respectively opened on the first anchoring plate 21 and the second anchoring plate 31 located above, so as to improve the convenience of fastening the bolt.
The structure of the tower crane foundation embedded positioning auxiliary tool is described above specifically, and the use method thereof is described below.
Providing four groups of tower crane foundation pre-buried positioning auxiliary tools;
providing four tower crane foundation embedded plates 4 which are arranged in a rectangular shape;
as shown in fig. 5, according to the distance between two adjacent tower crane foundation embedded plates 4, the length of each group of second rod bodies 12 extending out of the first rod body 11 is adjusted by contrasting with the scale marks, so that the length of the tower crane foundation embedded positioning auxiliary tool is adapted to the distance between two adjacent tower crane foundation embedded plates 4, and after the length of the second rod bodies 12 is adjusted, the first fastening bolts 112 are screwed to position the second rod bodies;
inserting a first anchoring clamping groove 2 and a second anchoring clamping groove 3 of each group of tower crane foundation embedded positioning auxiliary tools into two adjacent tower crane foundation embedded plates 4 respectively;
integrally placing the tower crane foundation embedded plate 4 and the tower crane foundation embedded positioning auxiliary tool which are formed by splicing to the installation position of the tower crane foundation embedded plate 4;
leveling the four tower crane foundation embedded plates 4 by using the leveling bubble 13;
after the four tower crane foundation embedded plates 4 are leveled, the second fastening bolts 2 and the third fastening bolts 3 are screwed, the first anchoring clamping grooves 2 and the second anchoring clamping grooves 3 are respectively fixed with the tower crane foundation embedded plates 4, and the tower crane foundation embedded plates 4 are fixed with a lower part structure; in the embodiment of the invention, the tower crane foundation embedded plate 4, the first anchoring clamping groove 2 and the second anchoring clamping groove 3 are in threaded connection with the first screw hole 211 and the second screw hole 311 through the second fastening bolt 22 and the third fastening bolt 32 respectively and then abut against each tower crane foundation embedded plate 4. In the embodiment of the invention, the tower crane foundation embedded plate 4 is usually anchored and positioned with the lower foundation bolt.
In the embodiment of the invention, each group of tower crane foundation embedded positioning auxiliary tools comprise two telescopic positioning rods 1, and a first anchoring clamping groove 2 and a second anchoring clamping groove 3 are respectively fixed at two ends of each telescopic positioning rod 1.
After the position of the tower crane foundation embedded plate 4 is fixed, the tower crane foundation embedded positioning auxiliary device can be taken down by loosening the second fastening bolt 22 and the third fastening bolt 32, so that the tower crane foundation embedded positioning auxiliary device can be recycled; the second rod 12 can also be retracted into the sliding groove 111 of the first rod 11, so as to be convenient for storage, and the second rod 12 can be protected, thereby preventing the structure of the second rod 12 from being damaged and prolonging the service life of the tool.
While the present invention has been described in detail and with reference to the accompanying drawings and examples, it will be apparent to one skilled in the art that various changes and modifications can be made therein. Therefore, certain details of the embodiments are not to be interpreted as limiting, and the scope of the invention is to be determined by the appended claims.
Claims (6)
1. The utility model provides a pre-buried location appurtenance of tower crane foundation which characterized in that includes:
the telescopic positioning rod comprises a first rod body and a second rod body, wherein a sliding groove is formed in the first rod body, the second rod body is telescopic in the sliding groove, a threaded hole is formed in the first rod body, a first fastening bolt is screwed in the threaded hole and abuts against the second rod body through the first fastening bolt for positioning, and a scale mark is marked on the second rod body;
the first anchoring clamping groove is used for clamping a tower crane foundation embedded plate, the first anchoring clamping groove is fixed with the first rod body at the first end of the telescopic positioning rod, a second fastening bolt is screwed on the first anchoring clamping groove, and the first anchoring clamping groove abuts against the tower crane foundation plate through the second fastening bolt for positioning;
a second anchoring clamping groove for clamping the tower crane foundation embedded plate, wherein the second anchoring clamping groove is fixed with the end part of the second rod body at the second end of the telescopic positioning rod, and a third fastening bolt is screwed on the second anchoring clamping groove and abuts against the tower crane foundation embedded plate through the third fastening bolt for positioning;
and the level bubble is fixed on the first rod body.
2. The tower crane foundation embedded positioning auxiliary tool is characterized in that the first anchoring clamping groove comprises two first anchoring plates which are oppositely arranged from top to bottom, a space for clamping the tower crane foundation embedded plate is defined between the two first anchoring plates, and one first anchoring plate is provided with a first screw hole for the second fastening bolt to be screwed.
3. The tower crane foundation embedded positioning auxiliary tool is characterized in that the second anchoring clamping groove comprises two second anchoring plates which are oppositely arranged up and down and a connecting plate which is connected between the two second anchoring plates, a space for clamping the tower crane foundation embedded plates is defined between the two first anchoring plates, one second anchoring plate is provided with a second screw hole for the threaded connection of a third fastening bolt, and the connecting plate is fixed with the end part of the second rod body.
4. The tower crane foundation embedded positioning auxiliary tool as claimed in claim 1, wherein the number of the level bubbles is two, and the level bubbles are fixed to the top and the side of the first rod body respectively.
5. A tower crane foundation embedded plate positioning method is characterized by comprising the following steps:
providing four groups of tower crane foundation embedded positioning auxiliary tools according to any one of claims 1 to 4;
providing four tower crane foundation embedded plates which are arranged in a rectangular shape;
according to the distance between two adjacent tower crane foundation embedded plates, adjusting the length of each group of second rod bodies extending out of the first rod body by contrasting with the scale marks so that the length of the tower crane foundation embedded positioning auxiliary tool is matched with the distance between two adjacent tower crane foundation embedded plates, and screwing the first fastening bolt to position the second rod bodies after the length of the second rod bodies is adjusted;
inserting a first anchoring clamping groove and a second anchoring clamping groove of each group of tower crane foundation embedded positioning auxiliary tools into two adjacent tower crane foundation embedded plates respectively;
integrally placing the tower crane foundation embedded plate formed by splicing and the tower crane foundation embedded positioning auxiliary tool to the installation position of the tower crane foundation embedded plate;
leveling the four tower crane foundation embedded plates by using the leveling bubble;
after the four tower crane foundation embedded plates are leveled, the second fastening bolts and the third fastening bolts are adjusted in a rotating mode, the first anchoring clamping grooves and the second anchoring clamping grooves are fixed with the tower crane foundation embedded plates respectively, and the tower crane foundation embedded plates are fixed with the lower part structures.
6. The tower crane foundation embedded plate positioning method according to claim 5, wherein the number of each group of tower crane foundation embedded positioning auxiliary tools is two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010721221.3A CN111676997A (en) | 2020-07-24 | 2020-07-24 | Tower crane foundation embedded positioning auxiliary tool and tower crane foundation embedded plate positioning method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010721221.3A CN111676997A (en) | 2020-07-24 | 2020-07-24 | Tower crane foundation embedded positioning auxiliary tool and tower crane foundation embedded plate positioning method |
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| Publication Number | Publication Date |
|---|---|
| CN111676997A true CN111676997A (en) | 2020-09-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010721221.3A Pending CN111676997A (en) | 2020-07-24 | 2020-07-24 | Tower crane foundation embedded positioning auxiliary tool and tower crane foundation embedded plate positioning method |
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| CN (1) | CN111676997A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116356956A (en) * | 2023-04-14 | 2023-06-30 | 甘肃省安装建设集团有限公司 | Rag bolt location |
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| WO2006030894A1 (en) * | 2004-09-17 | 2006-03-23 | The Tokyo Electric Power Company, Incorporated | Foundation structure of tower |
| CN201704949U (en) * | 2010-05-17 | 2011-01-12 | 上海华群实业股份有限公司 | Sliding formwork for one-step molding of streetlamp foundation |
| CN108584491A (en) * | 2018-01-22 | 2018-09-28 | 泰州钰明新材料有限公司 | A kind of air-expanding shaft mounting base in coating apparatus |
| CN208235565U (en) * | 2018-04-12 | 2018-12-14 | 中天建设集团有限公司 | A kind of tower crane bolt integral built-in setting tool |
| CN109025327A (en) * | 2018-08-16 | 2018-12-18 | 武汉海王机电工程技术有限公司 | A kind of auxiliary locator of foundation bolt |
| CN209636847U (en) * | 2019-03-05 | 2019-11-15 | 中国建筑第二工程局有限公司 | A kind of adjustable tower crane built-in fitting accurate positioning tool |
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2020
- 2020-07-24 CN CN202010721221.3A patent/CN111676997A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006030894A1 (en) * | 2004-09-17 | 2006-03-23 | The Tokyo Electric Power Company, Incorporated | Foundation structure of tower |
| CN201704949U (en) * | 2010-05-17 | 2011-01-12 | 上海华群实业股份有限公司 | Sliding formwork for one-step molding of streetlamp foundation |
| CN108584491A (en) * | 2018-01-22 | 2018-09-28 | 泰州钰明新材料有限公司 | A kind of air-expanding shaft mounting base in coating apparatus |
| CN208235565U (en) * | 2018-04-12 | 2018-12-14 | 中天建设集团有限公司 | A kind of tower crane bolt integral built-in setting tool |
| CN109025327A (en) * | 2018-08-16 | 2018-12-18 | 武汉海王机电工程技术有限公司 | A kind of auxiliary locator of foundation bolt |
| CN209636847U (en) * | 2019-03-05 | 2019-11-15 | 中国建筑第二工程局有限公司 | A kind of adjustable tower crane built-in fitting accurate positioning tool |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116356956A (en) * | 2023-04-14 | 2023-06-30 | 甘肃省安装建设集团有限公司 | Rag bolt location |
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Application publication date: 20200918 |
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