CN109138414B - Corner extending structure - Google Patents
Corner extending structure Download PDFInfo
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- CN109138414B CN109138414B CN201811162140.3A CN201811162140A CN109138414B CN 109138414 B CN109138414 B CN 109138414B CN 201811162140 A CN201811162140 A CN 201811162140A CN 109138414 B CN109138414 B CN 109138414B
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- rib
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- reinforcing rib
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- 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
- E04G13/00—Falsework, forms, or shutterings for particular parts of buildings, e.g. stairs, steps, cornices, balconies foundations, sills
Abstract
The invention belongs to the field of building processing, and particularly discloses a corner telescopic structure which comprises a reinforcing rib connected to the inner side of an aluminum template in a sliding manner, wherein the reinforcing rib is vertical to the connecting edges of two aluminum templates; a back rib is connected between the two reinforcing ribs, the back rib is L-shaped and comprises a transverse rib and a vertical rib which are fixed together, U-shaped grooves are formed in the ends, far away from each other, of the transverse rib and the vertical rib, the reinforcing ribs are connected in the U-shaped grooves in a sliding mode, and the height of each reinforcing rib is consistent with that of each U-shaped groove; and connecting plates are fixed at the end parts of the transverse ribs and the vertical ribs, which are positioned in the U-shaped grooves, first threaded holes are formed in the connecting plates, and second threaded holes matched with the first threaded holes are formed in the aluminum template. By adopting the scheme of the invention, the problem that the reinforcing rib at the corner cannot slide after the aluminum template is extended can be solved.
Description
Technical Field
The invention belongs to the field of building processing, and particularly relates to a corner telescopic structure.
Background
The aluminum template is a building template made of aluminum alloy, is also called an aluminum alloy template, is made by extruding the aluminum template through special equipment according to the modular manufacturing design, can be combined and spliced into an integral die carrier with different sizes and complex external dimensions, and is an assembled and industrialized system template, overcomes the defect that the traditional wooden template is easy to damp and deform, and has lower processing cost compared with a steel template, and is popular with consumers.
The corner refers to the corner of the built formwork, and the two aluminum formworks are fixed together in the general building process to form a right angle. In order to improve the bending strength of the aluminum template, reinforcing ribs are generally fixed on the inner side of the aluminum template, and are fixed between two reinforcing ribs at corners through connecting pieces. In order to ensure the connection strength of the connecting piece and the supporting strength of the reinforcing ribs, the distance between two reinforcing ribs is generally required to be less than 30 cm.
In the prior art, a formwork is built by utilizing an aluminum formwork according to the required size requirement, concrete is poured on one side of the working surface of the aluminum formwork, and the formwork is used for limiting the shape of the concrete. Because the size of building the die carrier changes, consequently need the aluminium template of multiple different sizes, select the collocation according to the condition at the in-process of building, it is comparatively troublesome, and increased the cost of processing aluminium template.
In order to solve the problems, the applicant develops a telescopic aluminum template which comprises two half templates, wherein the opposite ends of the two half templates are respectively provided with a sliding groove, a supporting plate is arranged between the two half templates, and the two ends of the supporting plate are respectively connected in the sliding grooves in a sliding mode. In the use, when the aluminum template needs to be extended, the half template is slid to enable the supporting plate to slide out of the sliding groove, and the length of the sliding out of the supporting plate is the length of the extension of the aluminum template.
After the aluminum template is stretched, the reinforcing ribs also move along with the aluminum template. It still has the following problems: because of the connection requirement of the two reinforcing ribs at the corner, the reinforcing ribs can only be located at the edges of the aluminum template finally, and when the length of the aluminum template is longer, the supporting effect of the reinforcing ribs is obviously weakened.
Disclosure of Invention
The invention aims to provide a corner telescopic structure to solve the problem that the supporting effect of a reinforcing rib is weakened after an aluminum template is extended.
In order to achieve the purpose, the basic scheme of the invention is as follows: a corner telescopic structure comprises a reinforcing rib which is connected to the inner side of an aluminum template in a sliding manner, wherein the reinforcing rib is vertical to the connecting edges of two aluminum templates; a back rib is connected between the two reinforcing ribs, the back rib is L-shaped and comprises a transverse rib and a vertical rib which are fixed together, U-shaped grooves are formed in the ends, far away from each other, of the transverse rib and the vertical rib, the reinforcing ribs are connected in the U-shaped grooves in a sliding mode, and the height of each reinforcing rib is consistent with that of each U-shaped groove; and connecting plates are fixed at the end parts of the transverse ribs and the vertical ribs, which are positioned in the U-shaped grooves, first threaded holes are formed in the connecting plates, and second threaded holes matched with the first threaded holes are formed in the aluminum template.
The theory of operation and the beneficial effect of this basic scheme lie in:
1. the back rib is used for connecting the two reinforcing ribs, and after the aluminum template is stretched, the reinforcing ribs are not located at the specific supporting positions of the aluminum template any more, so that the reinforcing ribs need to be slid, the reinforcing ribs are located at the specific supporting positions of the aluminum template again, and a good supporting effect is achieved. In the device, under the condition of not changing the original structure of the reinforcing rib, the effect that the supporting point of the reinforcing rib is changed along with the extension of the aluminum template is realized.
2. Compared with the prior art that the connecting piece is connected with the two reinforcing ribs, the connecting piece and the end parts of the reinforcing ribs are fixed, namely, the connecting piece can only ensure that the end parts of the reinforcing ribs are supported, and when the two reinforcing ribs are far away, the connecting piece only connected with the end parts of the reinforcing ribs can not ensure the connecting strength of the connecting piece to the two reinforcing ribs. In this application, the back of the body rib is at the stiffening rib middle part to the strong rib's strong point, even after the relative back of the body rib of stiffening rib slides, the back of the body rib takes place the skew to the relative middle part of strong rib's strong point, still can guarantee the joint strength to a certain extent.
3. Compare two stiffening ribs of direct rib connection through the slope, the degree of difficulty of processing U type groove on the rib of slope is higher, and because the tip of rib needs to be fixed with the aluminum mould board, consequently the requirement such as inclination to the rib is higher, and the processing cost is higher. In the device, the back rib is L-shaped, the U-shaped groove is convenient to process, the connection requirement on the reinforcing rib is met, and the processing cost is low.
4. Install the location through first screw hole and second screw hole to realize fixing of back of the body rib and aluminum mould board through the bolt, make things convenient for the connection and the dismantlement of back of the body rib and aluminum mould board.
Furthermore, a plurality of grooves are formed in the reinforcing rib along the axial direction of the reinforcing rib, supporting blocks are connected in the grooves in a sliding mode, and springs are fixed between the supporting blocks and the bottoms of the grooves.
Has the advantages that: in an initial state, the reinforcing ribs are abutted against the aluminum template, and the supporting block is completely positioned in the groove; in the process of sliding of the reinforcing ribs, when the reinforcing ribs slide to the lower part of the supporting plate, the supporting block slides out of the groove under the reset action of the spring due to the fact that the thickness of the supporting plate is smaller than that of the aluminum template, the supporting block supports the supporting plate, and the bending strength of the supporting plate is increased.
Furthermore, reinforcing ribs are fixed between the transverse ribs and the vertical ribs, and the reinforcing ribs, the transverse ribs and the vertical ribs form a triangle.
Has the advantages that: the reinforcing ribs, the transverse ribs and the vertical ribs form a stable triangular structure, so that the stability of the back rib is improved, and the deformation caused by overlarge pressure of the back rib is avoided.
Furthermore, the cross section of the U-shaped groove is isosceles trapezoid, and the cross section of the reinforcing rib is isosceles trapezoid matched with the U-shaped groove.
Has the beneficial effects that; compared with a rectangle, the isosceles trapezoid has better bending load capacity.
Furthermore, the aluminum template is provided with a slide rail for the reinforcing rib to slide.
Has the advantages that: in the sliding process of the reinforcing rib, when the midpoint of the reinforcing rib is far away from the back rib, the supporting effect of the back rib on the reinforcing rib is weakened, and the reinforcing rib is easy to incline; the sliding rails are arranged to limit the sliding range of the reinforcing ribs, so that the reinforcing ribs are prevented from being inclined.
Drawings
FIG. 1 is a schematic diagram of a first embodiment of the present invention;
FIG. 2 is an enlarged view of portion B of FIG. 1;
FIG. 3 is a schematic view of a third embodiment of the present invention;
fig. 4 is a right side sectional view of the vertical rib of fig. 3.
Detailed Description
The following is further detailed by way of specific embodiments:
reference numerals in the drawings of the specification include: the air storage device comprises an aluminum template 1, a reinforcing rib 2, a back rib 3, a reinforcing rib 4, a groove 5, a supporting block 6, an air outlet hole 7, an air suction hole 8, a whistle 9, a transverse rib 10, a vertical rib 11, an air storage barrel 12, a piston rod 13, a guide block 14, a connecting plate 15, a first threaded hole 16, a clamping block 17, a U-shaped groove 18, an air bag 19 and a connecting hole 20.
The first embodiment is as follows:
as shown in figures 1 and 2: the utility model provides a corner extending structure, is including installing the slide rail in aluminium template 1 inboard, and the slide rail is mutually perpendicular with two aluminium template 1's joint edge, and sliding connection has stiffening rib 2 in the slide rail, and stiffening rib 2 is last to be equipped with a plurality of recesses 5 along its axial, and sliding connection has supporting shoe 6 in recess 5, and supporting shoe 6 transversal personally submits isosceles trapezoid, and the minor face and the aluminium template 1 surface of supporting shoe 6 offset.
A back rib 3 is connected between the two reinforcing ribs 2, and the back rib 3 is made of steel. The back rib 3 is L-shaped, the back rib 3 comprises a transverse rib 10 and a vertical rib 11 which are integrally formed, a reinforcing rib 4 is fixed between the transverse rib 10 and the vertical rib 11, and the reinforcing rib 4, the transverse rib 10 and the vertical rib 11 form a right-angled triangle. The ends, far away from each other, of the transverse ribs 10 and the vertical ribs 11 are provided with U-shaped grooves 18, the reinforcing ribs 2 are connected in the U-shaped grooves 18 in a sliding mode, and the height of the reinforcing ribs 2 is consistent with that of the U-shaped grooves 18; and connecting plates 15 are fixed at the end parts of the transverse ribs 10 and the vertical ribs 11, which are positioned in the U-shaped grooves 18, first threaded holes 16 are formed in the connecting plates 15, and second threaded holes matched with the first threaded holes 16 are formed in the aluminum template 1.
A gap of 3-6mm exists between the reinforcing rib 2 and the sliding rail, and in the embodiment, 5mm is selected. An electromagnet and a power supply for electrifying the electromagnet are fixed in the groove 5, a magnetic block is fixed on the supporting block 6, and the electromagnet has a repulsion effect on the magnetic block after being electrified. The cross section of the supporting block 6 is trapezoidal, the bottom of the groove 5 is provided with an air outlet 7 and an air suction hole 8, the air suction hole 8 is internally provided with an air suction one-way valve, and when the air pressure in the groove 5 is reduced, the outside air enters the groove 5 through the air suction one-way valve. An air outlet one-way valve is arranged in the air outlet 7, and when the air pressure in the groove 5 is increased, the air in the groove 5 is discharged through the air outlet one-way valve. The air outlet 7 is communicated with a whistle 9.
The specific implementation process is as follows:
in the installation process, after the aluminum template 1 extends, the reinforcing rib 2 is slid, so that the reinforcing rib 2 is positioned in the middle of the aluminum template 1, a better supporting effect is obtained, and under the condition that the original structure of the reinforcing rib 2 is not changed, the effect that the supporting point of the reinforcing rib 2 is changed along with the extension of the aluminum template 1 is realized.
In the sliding process of the reinforcing ribs 2, when the supporting block 6 slides to the supporting plate, the lower end of the supporting plate and the lower end of the aluminum template 1 are not in the same plane, so that a recess is formed at the supporting plate, the supporting block 6 slides out of the groove 5 under the action of a spring, and the free end of the supporting block 6 abuts against the supporting plate to support the supporting plate.
In the initial state, the supporting block 6 is pressed against the inner side surface of the aluminum mold plate 1 by the elastic force of the spring. And starting the electromagnet, wherein the electromagnet repels the magnetic block, and the magnetic block drives the supporting block 6 to slide towards the outside of the groove 5, so that the supporting effect of the supporting block 6 on the aluminum template 1 is stable. In the process of enclosing the die carrier, the aluminum die plate 1 needs to be installed and fixed at multiple positions, so that the die carrier is difficult to avoid collision and deformation of the die carrier is caused. This device can detect whether aluminium template 1 appears great, more obvious deformation at 2 slip in-process of stiffening rib. The detection process is as follows:
when the surface of the aluminum template 1 is smooth, the reinforcing ribs 2 drive the supporting blocks 6 to slide, the positions of the supporting blocks 6 in the grooves 5 are unchanged, when the supporting blocks 6 slide to the supporting plates, the supporting blocks 6 continue to slide outside the grooves 5, the space in the grooves 5 is increased, the air pressure is reduced, outside air enters the grooves 5 through the air suction one-way valves, and the whistle 9 cannot blow.
When the aluminum template 1 is raised, the supporting block 6 slides to the raised part, and the cross section of the supporting block 6 is isosceles trapezoid, so that the supporting block 6 is extruded into the groove 5 along the inclined plane of the supporting block 6 by the projection, the supporting block 6 slides into the groove 5, the space in the groove 5 is reduced, the air pressure is increased, the air in the groove 5 is discharged through the air outlet one-way valve, the whistle 9 is blown, and the worker is reminded that the aluminum template 1 at the position is deformed.
When the aluminum template 1 is sunken, the supporting block 6 slides to the sunken position, the supporting block 6 slides to the outer side of the groove 5, the space in the groove 5 is increased, and air is sucked inwards. After the supporting block 6 is sunken through the position, the supporting block 6 gradually becomes horizontal along with the surface of the aluminum template 1, the supporting block 6 gradually moves into the groove 5 to reset, the space in the groove 5 is reduced, gas is discharged, the whistle 9 is blown, and the working personnel are reminded that the aluminum template 1 near the position is deformed.
After hearing the whistle 9, the worker stops sliding the reinforcing rib 2, detects the aluminum template 1 near the position where the whistle 9 stays, determines the deformation condition of the aluminum template 1, and then carries out subsequent refitting or processing.
Example two:
the difference between this embodiment and the first embodiment is: as shown in fig. 3 and 4, a connecting hole 20 is formed in the bottom of the U-shaped groove 18, the air bag 19 is connected in the connecting hole 20 through a pin, that is, a pin is glued to the lower end of the air bag 19, and when the air bag is installed, the pin is inserted into the connecting hole 20, so that the air bag 19 is fixed in the U-shaped groove 18. A clamping block 17 is connected in the U-shaped groove 18 in a sliding mode, and an air bag 19 is arranged between the clamping block 17 and the U-shaped groove 18. The air bag 19 is provided with a vent hole, and a valve is arranged in the vent hole.
All be fixed with gas receiver 12 on horizontal rib 10 and the vertical rib 11, sliding connection has the slide in the gas receiver 12, be fixed with piston rod 13 on the slide, be fixed with the spring between slide and the 12 bottoms of gas receiver, be equipped with inlet port and exhaust hole on the gas receiver 12, be equipped with the check valve of admitting air in the inlet port, when 12 internal gas pressure of gas receivers reduced, in the outside gas supplyed into gas receiver 12 through the check valve of admitting air, inlet port department intercommunication has the suction hood, the one end opening that the inlet port was kept away from to the suction hood is towards stiffening rib 2. An exhaust check valve is arranged in the exhaust hole, and when the air pressure in the air storage barrel 12 is increased, the air in the air storage barrel 12 is exhausted to the outside through the exhaust check valve. The air outlet hole is communicated with an air outlet pipe which is communicated with the air bag 19. The piston rod 13 is fixed with a guide block 14 for connecting with the reinforcing rib 2, the guide block 14 is provided with a mounting hole, and when the connection is performed, the guide block 14 is fixed on the reinforcing rib 2 through the mounting hole by using a pin, a screw or a bolt.
During specific work, taking the working process on the vertical rib 11 as an example (the working process on the transverse rib 10 is consistent with the working process), the clamping block 17 is slid to the top of the U-shaped groove 18, so that enough space is left in the U-shaped groove 18, the air bag 19 is placed in the space, the air bag 19 is fixed at the bottom of the U-shaped groove 18 through the pin, and after the air bag is fixed, the clamping block 17 slides downwards to abut against the upper end of the air bag 19. The valve on the air bag 19 is opened, the fixture block 17 continues to slide downwards, the air in the air bag 19 is squeezed out, and the valve is closed.
The operator slides the piston rod 13 to the right, the left space of the air storage barrel 12 is increased and is in a negative pressure state, and outside air is supplemented into the air storage barrel 12 through the air inlet one-way valve. The reinforcing rib 2 is inserted into the U-shaped groove 18, the reinforcing rib 2 is gradually inserted into the U-shaped groove 18 in a leftward sliding mode, and when the connection point on the reinforcing rib 2 is aligned with the mounting hole, the guide block 14 is fixed with the reinforcing rib 2 through a bolt.
The reinforcing rib 2 continues to slide leftwards, the reinforcing rib 2 drives the piston rod 13 to move leftwards through the guide block 14, the space in the gas storage barrel 12 is reduced, the air pressure is increased, the gas in the gas storage barrel 12 is discharged into the air bag 19 through the exhaust hole, the air bag 19 is inflated and expanded, the air bag 19 pushes the clamping block 17 upwards, the clamping block 17 is enabled to gradually abut against the reinforcing rib 2, and the upper end of the reinforcing rib 2 abuts against the surface of the aluminum template 1. The air bag 19 is arranged, when the reinforcing rib 2 is inserted, the air bag 19 is inflated, so that the clamping block 17 is always abutted against the reinforcing rib 2, and a better supporting effect is ensured.
After the aluminum template 1 is stretched, an operator slides the reinforcing rib 2 rightwards, so that the reinforcing rib 2 is positioned in the middle of the aluminum template 1, and a better supporting effect is achieved. In the process that the reinforcing rib 2 slides rightwards, the guide block 14 is driven to slide rightwards, the guide block 14 drives the piston rod 13 to slide rightwards, the space in the air storage barrel 12 is enlarged, and air is sucked inwards through the air inlet hole. In the sliding process of the reinforcing rib 2, friction is generated between the reinforcing rib 2 and the surface of the aluminum template 1, aluminum powder possibly drops, and in the air suction process, the dust hood absorbs the dropped aluminum powder or dust, so that the aluminum powder or dust is prevented from being accumulated at a certain position on the device to cause blockage, and the friction between the reinforcing rib 2 and the device is prevented from being increased, so that the reinforcing rib 2 is prevented from being worn in the sliding process of the reinforcing rib 2.
The foregoing is merely an example of the present invention and common general knowledge of known specific structures and features of the embodiments is not described herein in any greater detail. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several changes and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent.
Claims (5)
1. A corner extending structure is characterized in that: the aluminum template comprises a reinforcing rib which is connected to the inner side of the aluminum template in a sliding way, and the reinforcing rib is vertical to the connecting edges of the two aluminum templates; a back rib is connected between the two reinforcing ribs, the back rib is L-shaped and comprises a transverse rib and a vertical rib which are fixed together, U-shaped grooves are formed in the ends, far away from each other, of the transverse rib and the vertical rib, the reinforcing ribs are connected in the U-shaped grooves in a sliding mode, and the height of each reinforcing rib is consistent with that of each U-shaped groove; connecting plates are fixed at the ends of the U-shaped grooves on the transverse ribs and the vertical ribs, first threaded holes are formed in the connecting plates, and second threaded holes matched with the first threaded holes are formed in the aluminum template; a gap of 3-6mm is formed between the reinforcing rib and the sliding rail, an electromagnet and a power supply for electrifying the electromagnet are fixed in the groove, and a magnetic block which is mutually repelled with a magnetic field generated by the electromagnet is fixed on the supporting block; the cross section of the supporting block is trapezoidal, the bottom of the groove is provided with an air outlet and an air suction hole, an air suction one-way valve is arranged in the air suction hole, and when the air pressure in the groove is reduced, outside air enters the groove through the air suction one-way valve; an air outlet one-way valve is arranged in the air outlet hole, and when the air pressure in the groove is increased, the air in the groove is discharged through the air outlet one-way valve; the air outlet is communicated with a whistle.
2. A corner telescoping structure according to claim 1, wherein: the reinforcing rib is provided with a plurality of grooves along the axial direction, supporting blocks are connected in the grooves in a sliding mode, and springs are fixed between the supporting blocks and the bottoms of the grooves.
3. A corner telescoping structure according to claim 2, wherein: and reinforcing ribs are fixed between the transverse ribs and the vertical ribs, and the reinforcing ribs, the transverse ribs and the vertical ribs form a triangle.
4. A corner telescoping structure according to claim 3, wherein: the cross section of the U-shaped groove is isosceles trapezoid, and the cross section of the reinforcing rib is isosceles trapezoid matched with the U-shaped groove.
5. A corner telescoping structure according to claim 4, wherein: and the aluminum template is provided with a sliding rail for the reinforcing rib to slide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811162140.3A CN109138414B (en) | 2018-09-30 | 2018-09-30 | Corner extending structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811162140.3A CN109138414B (en) | 2018-09-30 | 2018-09-30 | Corner extending structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109138414A CN109138414A (en) | 2019-01-04 |
| CN109138414B true CN109138414B (en) | 2020-11-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811162140.3A Active CN109138414B (en) | 2018-09-30 | 2018-09-30 | Corner extending structure |
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| CN (1) | CN109138414B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112376903B (en) * | 2020-10-27 | 2022-04-19 | 晟通科技集团有限公司 | Corner supporting device and corner template combination |
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| JP2001295473A (en) * | 2000-04-18 | 2001-10-26 | Taisei Corp | Steel skeleton erection span adjusting method |
| CN206205440U (en) * | 2016-11-11 | 2017-05-31 | 云南建投第五建设有限公司 | Aluminum alloy mould plate back cord rectangular card code |
| CN207194432U (en) * | 2017-09-14 | 2018-04-06 | 北京城建六建设集团有限公司 | A kind of adjustable suspension bridging piece support frame |
| CN207211749U (en) * | 2017-07-31 | 2018-04-10 | 浙江祥康农业发展有限公司 | A kind of Telescopic strut for construction frame |
| CN207405990U (en) * | 2017-10-18 | 2018-05-25 | 中铝南铝（福建）铝结构技术开发有限公司 | A kind of general aluminum alloy mould plate in negative and positive angle |
| CN207829454U (en) * | 2018-01-12 | 2018-09-07 | 广东保辉建筑工程有限公司 | The back cord frame of wall column angle mould |
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2018
- 2018-09-30 CN CN201811162140.3A patent/CN109138414B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0649951A1 (en) * | 1993-10-16 | 1995-04-26 | Peri Gmbh | Concrete shuttering |
| JP2001295473A (en) * | 2000-04-18 | 2001-10-26 | Taisei Corp | Steel skeleton erection span adjusting method |
| CN206205440U (en) * | 2016-11-11 | 2017-05-31 | 云南建投第五建设有限公司 | Aluminum alloy mould plate back cord rectangular card code |
| CN207211749U (en) * | 2017-07-31 | 2018-04-10 | 浙江祥康农业发展有限公司 | A kind of Telescopic strut for construction frame |
| CN207194432U (en) * | 2017-09-14 | 2018-04-06 | 北京城建六建设集团有限公司 | A kind of adjustable suspension bridging piece support frame |
| CN207405990U (en) * | 2017-10-18 | 2018-05-25 | 中铝南铝（福建）铝结构技术开发有限公司 | A kind of general aluminum alloy mould plate in negative and positive angle |
| CN207829454U (en) * | 2018-01-12 | 2018-09-07 | 广东保辉建筑工程有限公司 | The back cord frame of wall column angle mould |
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