WO2016062224A1

WO2016062224A1 - Integrated column-equipped heat insulation wallboard, manufacturing and building processes and corollary equipment thereof

Info

Publication number: WO2016062224A1
Application number: PCT/CN2015/092150
Authority: WO
Inventors: 张领然; 张前; 李俊强; 马兆龙; 徐科化; 张利敏; 张利宁; 张利振; 张利静; 王新萍
Original assignee: 张领然
Priority date: 2014-10-19
Filing date: 2015-10-19
Publication date: 2016-04-28
Also published as: CN104405062A

Abstract

An integrated column-equipped heat insulation wallboard, the upper surface layer and the lower surface layer of the wallboard are concrete layers (10), the wallboard has a glass fiber network (5) and a reinforcement network (6) inside. And the middle layer of the wallboard is an insulating layer (11). Two reinforcement networks (6) are connected by oblique cutting reinforcements passing through the insulating layer (11). Grooves (4) of wallboard and reinforcement splices (3) are provided on the four sides of the wallboard. In process of manufacturing the wallboard, firstly, pillar reinforcing cages and reinforcement networks of the integrated column-equipped heat insulation wallboard are manufactured respectively, and are connected by reinforcements; secondly, the lower concrete layer (10), the insulating layer (11) and the upper concrete layer (10) are manufactured in sequence. The integrated column-equipped heat insulation wallboard and the manufacturing and building process thereof have a simple process. Furthermore, materials and energy can be saved.

Description

Integral column insulation wall board and production building technology and matching equipment

Technical field

The invention relates to the production and construction process of wall materials, in particular to the overall column wall insulation wall board and the production building process.

Background technique

Nowadays, in the building, whether it is brick-concrete structure, frame structure or wallboard structure, the process of pouring beam and column is adopted. This process has the following disadvantages in construction: 1. A large number of templates, branches and materials are needed. 2, labor time, complex process, and restrict the construction period.

Summary of the invention

In order to overcome the complicated processes such as the pillars, the supporting molds and the pouring in the building, the present invention proposes an integral column-insulated wall panel, a production process and a building process.

The invention is realized in the following way: First, in the production, the pillar steel cages and the integral heat insulation wall panel steel grids are respectively arranged, and the two are connected by steel bars, leaving a gap. After the spreading trigger lays the bottom concrete in the floor baffle frame, the combined steel cage and steel mesh frame are placed on the concrete, and the bottom steel cage and the lower part of the steel mesh frame are vibrated into the concrete, after that, When making the insulation layer, put a partition on the gap between the steel cage and the steel mesh frame, and inject the insulation material, such as foamed cement and foam particle slurry, into the steel mesh frame according to a certain thickness, and do not flow into the column steel cage, and keep it warm. After the layer is solidified, the partition between the steel cage and the steel mesh frame is taken out. If the cement thin plate is used as the partition, it is not necessary to take it out. Finally, the upper concrete layer is spread by a spreader machine. If a heat-insulating plate such as a steel mesh polystyrene foam board is used, it is slightly condensed after being oscillated into the bottom concrete, and can directly be applied to the upper concrete layer. The whole column-in-wall insulation wall panel is made of exposed steel joints, and the surrounding is grooved. The steel bars of the steel cages at the upper and lower ends of the pillars are made of concrete surface, and the upper and lower ends of the pillars can also be pre-embedded with connecting nuts. .

When the integral column wall insulation wall is connected with the foundation and the column, the suspended casting connection method, the semi-suspended casting connection method and the steel plate welding connection method can be used:

1. Suspended cast connection method: When the foundation is completed quickly and the ground (over) beam reinforcement cage is placed, cement blocks are placed in the reinforcement cage with appropriate spacing and height equal to the lintel. The whole column-insulated wall panel is hung on the cement block, and the position is fixed. The support adjustment bracket is fixed, the verticality is adjusted, and the steel bars at both ends of the column are welded or connected with the lintel reinforcement cage and the bottom pillar reinforcement. The upper and lower end steel bar joints are respectively welded to the upper and lower beam reinforcement cages, and the upper formwork is poured with concrete, and the feed port is higher than the beam height. If the roof is cast, the top surface should be higher than the top of the beam and the bottom of the integral column insulation wall board is 1-2 cm.

2. Semi-suspended casting method: firstly cast the lintel part and the roof part except the column ribs, plastering after solidification, and then hoisting the whole column-cold insulation wall board, so that the overall column-cold insulation wall slab joints and foundation The pillars are welded or joined, and then the concrete is poured into the formwork, and the feed port is higher than the pouring part.

3. Steel plate welding method: The whole column-insulated wallboard can also be used to pre-embed the steel plate at the upper and lower end faces of the column, and spread the mortar ash at the base with the column-insulated wallboard. The steel plate at the lower end of the column is aligned with the pre-embedded steel plate on the foundation. There should be no sand ash on the steel plate. The upper support adjustment bracket, the correction and vertical wall panel, and the steel plate at the lower end of the column are welded with the steel plate on the foundation.

The whole column with column insulation wall board, the connection between two adjacent wall boards can be directly connected and 45 degree connection method:

1. Direct connection method: the end face opposite end face of the integral column heat insulation wallboard, or the column side end face forms a line connection, a T-joint connection, a right-angle connection on the column surface, leaving a proper gap, and soldering each connector with a soldering iron The gap is filled with fine stone concrete.

2, 45 degree connection method: the whole column with column insulation wall board corner two pieces can be made into a 45 degree angle during production, the construction is assembled at a 90 degree angle, forming a corner post, leaving a proper gap, using the welding iron to connect the joints Welded, cracked gravel concrete.

After the installation of the integral column insulation wallboard is completed, the cast-in-place roofing die adopts the lintel pipe-passing method:

Cross-beam pipe-fitting method: This method is to cut the template on both sides of the beam, according to a certain height, 3 cm below the bottom surface of the cast-in-place roof (two layers of template thickness), excavating a number of holes at a certain distance, the size can pass through the shelf The plastic pipe sleeve shall prevail. Pass the plastic pipe sleeve through the lintel reinforcement cage, put the formwork on both sides of the wall and then insert it into the shelf pipe. The shelf pipe extends 1 meter to the outside of the wall and the other end is inserted into the opposite wall. Inside the beam template hole, the cement pad is placed on the plastic tube sleeve in the lintel cage to support the shelf tube. The shelf tube is drilled and bolted at the proper position inside and outside the wall, and the template on both sides of the reinforcement cage is fixed. The template and interior wall formwork should be lower than the height of a cast-in-place top and a formwork thickness of the outer formwork. Add some branches under the pipe, place a 5 cm wide template strip on the shelf pipe, and then lay the formwork on the slats. Cement pouring. After the concrete has solidified, remove the branches, slats, bolts, pipe racks, template, and pipe holes. The shelf tube can be used as a building frame and eaves formwork bracket by 1 meter.

The whole column-mounted thermal insulation wall board is to be hoisted and transported, but it is difficult to remove from the site due to its heavy weight and large volume. When welding the lifting ring on the wallboard, it costs time to be buried at the time of production. Lifting parts are not only time-consuming, but also difficult to operate on the mold during production. In order to facilitate the lifting of the wall panel, a matching lifting machine has been invented. The lifting machine has two sets of beams, and one of the two beams is welded with a vertical bar below, and the height of the vertical bar is more than the thickness of the wall plate. One fixed connection is connected to one end, one ring is welded to the outside of the fixed support, and then the two sets of beams are arranged alternately on one side of the vertical bar, and four steel pipes are welded in the middle of the two sets of four beams to make the shaft hole, and two shafts are used. Inserted into two sets of steel pipes, two sets of fixing holes and bolts are arranged diagonally on the four beams, and four wire loops are connected to the rings. When hanging the wallboard, put two vertical bars into the two end faces of the wall, pull out the fixed bolts, and use the crane to lift the wire ropes on the four lifting holes. The two ends of the lifting ring are lifted up, and the two ends of the vertical bar are stuck to the wallboard. End face until lifting.

The overall column-mounted thermal insulation wall panel is also vertically corrected and fixed on the foundation, specially invented and integrated with pillar protection. The wall panel construction process is matched with the vertical vertical wall and the correction support adjustment bracket. It is composed of the upper ∩ type card, the fixing screw is arranged under the 卡 type card, the upper part is welded with the hinge and the steel pipe is connected, and the middle and lower part of the steel pipe has the adjusting screw. The lower steel pipe of the adjusting screw has a hinge and is connected to the base, and a steel nail is welded under the base. When the whole column is insulated and the wall board is hung on the foundation, the ∩ type card is stuck on the top of the wall panel, the screw is tightened, the weight is pressed on the base, and the verticality is adjusted by the adjusting screw, and the crane hook can be removed.

The overall column insulation wall board and production building technology have the following functions and features:

1. Prefabricated building: The whole column with column insulation wall board and the wall, column, insulation layer and veneer layer for building construction technology are all completed in the factory, accounting for 80% of the construction volume. The building can be built like a car in a factory.

2, structure, wall, insulation integration: the overall column insulation wall board and production building technology, wall and insulation integration, beam column and wall integration, floor and beam and column integration, the entire house is concrete pouring Overall, the process constitutes a complete “integrated insulation wall panel building system”.

3, four sections and one environmental protection: the overall column insulation wall board and production building process saves many processes in the building, such as wall construction, powder wall construction, external insulation construction, pouring column construction, etc., which can save a lot of materials, consumables and Working hours can save a lot of electric energy and water resources; the wall thickness is generally 15-20 cm, which increases the living area compared with the general building. The overall structure of the built house has earthquake-proof and earthquake-proof, heat insulation, insulation and construction life, no need Maintenance and comfort. There are basically no waste, exhaust, and soot emissions on the construction site to protect the environment. It is estimated that every 100 square meters of buildings can save 4 tons of water, electricity 100 degrees, save 10 tons of cement, save 60 hours of work, buildings can reduce the cost of one-third, can be one-half of the construction period.

In short, the overall column insulation wall board and production building technology can be industrialized in the factory, assembled on site, can integrate the building structure, wall and insulation, make the building water-saving, energy-saving, material saving and environmental protection. The veritable green building star, in the great cause of building beautiful China, its promotion and application will produce huge economic and social benefits.

DRAWINGS

Figure 1 is a plan sectional view of the overall column-insulated wall panel: 1 integral column insulation wall board, 2 column steel cage, 3 steel joints, 4 wall panel grooves, 5 glass fiber mesh, 6 steel mesh frame, 7 Window, 8 doors, 9 outlet switches, 10 concrete layers, 11 insulation layers.

Figure 2 is the construction of the two corners of the wall with the column insulation and the connection of the foundation connection: Figure 1 is the overall column insulation wall board, 2 column steel cage, 3 steel joints, 4 wall panel grooves, 12 Welding iron, 13 two wall panel gaps, 14 sand stone concrete, 15 foundations, 16 upper and lower column reinforcement points, 17 lintel reinforcement cages, 18 cement blocks, 20 horizontal plates.

Figure 3 is a construction diagram of the overall column-mounted thermal insulation wall panel and the lintel penetrating pipe formwork: 1 integral column-cold insulation wallboard, 2 pillar steel bars, 3 steel bar joints, 4 wall plate grooves, 16 upper and lower column steel bars, 17 beam steel bars, 18 cement blocks, 19 pipe bolts, 20 templates, 21 plastic sleeves, 22 shelf tubes, 23 ∩ type card, 24 hinges, 25 setscrews, 26 adjustment screws, 27 bases, 28 steel nails, 29 weights, 30 poles.

Figure 4 is the overall column insulation board lifter: 31 wire rope, 32 rings, 33 beams, 34 vertical bars, 35 shaft tubes, 36 shafts, 37 fixing holes, 38 fixed bolts.

Example

As shown in Fig. 1, an integral column insulated wall panel comprises: a concrete layer on both sides of the wall panel, a glass fiber mesh 5 and a steel mesh frame 6 in the inner layer, and an intermediate layer is an insulating layer 11 (foamed cement or polystyrene) Foam board and other insulation materials) obliquely inserted steel bars through the insulation layer to connect the two sides of the steel mesh into a steel frame, door 8, window 7, water, electricity, outlet switch 9, gas pipeline are made together, surrounded by wall panel groove 4, there are The steel connecting rod, the characteristic of the process is that the whole column with the column heat insulating wall plate is made at the end face, and the column full concrete reinforced structure is connected with the wall plate to form an integral column heat insulating wall plate.

To do the overall column insulation wall board 1, first make the column steel cage 2, the steel grid 6, the pillar steel cage 2 and the steel grid 6 are connected by steel bars, leaving a gap, using the wall panel in the bezel frame The trigger lays the concrete 10 on the ground, places the pillar reinforcement cage 2 and the reinforcement grid 6 on the concrete 10, and vibrates the pillar reinforcement cage 2 and the lower portion of the reinforcement grid 6 into the concrete 10. Put a partition in the gap between the column steel cage 2 and the steel mesh frame 6, and put the foamed cement or foam particle slurry into the wall steel mesh frame 6 at a certain height, to be solidified, the heat insulation layer 11 is completed, and the partition plate is taken out. Then use the wallboard spreader to spread the upper concrete 10, solidify and maintain, and the whole column is made of column insulation wallboard 1.

1. Suspended cast connection method: When the foundation is completed quickly and placed on the ground (over) beam reinforcement cage 17, the cement block 18 is placed in the lintel reinforcement cage 17, with appropriate spacing and height equal to the lintel. The whole column insulation wall panel is hung on the cement block 18, and the position is fixed, the support adjustment bracket is fixed, the verticality is adjusted, and the steel bars at both ends of the column are welded or connected with the lintel reinforcement cage and the bottom pillar reinforcement, and the whole insulation is performed. The lower end steel bar joints on the wall panel are welded to the upper and lower beam reinforcement cages respectively, and the upper form is cast concrete, and the feed port is higher than the beam height. If the roof is cast, the top surface should be higher than the top of the beam and the bottom of the integral column insulation wall board is 1-2 cm, as shown in Figure 2.

3. Steel plate welding method: The whole column-insulated wallboard can also be used to pre-embed the steel plate at the upper and lower end faces of the column, and spread the mortar ash at the base with the column-insulated wallboard. The steel plate at the lower end of the column is aligned with the pre-embedded steel plate on the foundation. There should be no sand ash on the steel plate. The positive and vertical wall panels weld the steel plate at the lower end of the column with the steel plate on the foundation.

As shown in Fig. 3, when the wall panel is connected with the foundation and the wall panel and the wall panel, the lintel reinforcement cage 17 is first placed on the foundation 15, and the cement spacer 18 is placed in the reinforcement cage 17, and the adjacent two blocks are integrated. The pillar insulating wall panel 1 is hung on the foundation 15, and the upper end of the wall panel 1 is clamped by the supporting adjustment bracket type card 23, and the screw 25 is tightened to press the weight 29 against the base 27, and the base 27 is fixed by the steel nails 28. On the ground. The adjusting screw 26 is perpendicular to the wall panel 1, the pillar reinforcing bar 2 is welded to the basic column rib 2, and the reinforcing bar joint 3 is welded by the soldering iron 12, and the template 20 is filled in the concrete material 14 in the gap 13, and the concrete is poured. Column insulation wall panel 1 wall panel and wall panel, wall panel and foundation connection are completed.

As shown in Fig. 4, when the integral column heat insulating wall panel 1 is to be hoisted, the crane hangs the wire rope 31 of the lifting machine, puts the lifting machine on the wall panel 1, and the vertical bar 34 catches the end surface of the wall panel 1 and extracts it. The pin 38 is fixed, the crane is lifted, the beam 33 has one end of the lifting ring 32 rising upward, and the vertical bar 34 is tightly clamped to the two ends of the wall panel 1 until the wall panel 1 is lifted.

Cross-beam pipe-fitting method: This method is to cut the template on both sides of the beam, according to a certain height, 3 cm below the bottom surface of the cast-in-place roof (two layers of template thickness), excavating a number of holes at a certain distance, the size can pass through the shelf Tube 22 and plastic sleeve 21 shall prevail. The plastic sleeve shall pass through the lintel cage, the template 20 on both sides of the wall shall be put on, and then the shelf tube shall be inserted. The shelf tube protrudes 1 meter outside the wall and the other end is inserted into the opposite side. Inside the traverse template hole of the wall, a cement pad is placed on the plastic sleeve of the lintel reinforcement cage to support the shelf tube, the shelf tube is drilled and bolted at an appropriate position inside and outside the wall, and the template on both sides of the fixed reinforcement cage is 20 The side template and the inner wall formwork of the steel cage are lower than the height of a cast-in-place roof and a template thickness of the outer formwork, and some branch wood is added under the pipe, and the pipe strip is 5 cm wide and the template strip is placed on the shelf pipe, and then the slats are The upper formwork 20 is poured into cement. After the concrete has solidified, remove the branches, slats, bolts, pipe racks, template, and pipe holes. The shelf tube can be used as a building frame and eaves formwork bracket by 1 meter.

The whole column-mounted thermal insulation wall board is to be hoisted and transported, but it is difficult to remove from the site due to its heavy weight and large volume. When welding the lifting ring on the wallboard, it costs time to be buried at the time of production. Lifting parts are not only time-consuming, but also difficult to operate on the mold during production. In order to facilitate the lifting of wall panels, special invention The matching plate-lifting machine has two sets of beams, and one of the two beams is welded with a vertical bar below, the height of the vertical bar exceeds the thickness of the wall plate, and a fixed support is connected on the other end of the two beams, and is fixed. Each of the outer rings is welded with a lifting ring, and then the two sets of beams are arranged in a staggered manner on one side of the vertical bar. Four steel pipes are welded in the middle of the two sets of four beams to make shaft holes, and two sets of the shafts 36 are inserted into the two sets of steel pipes, in four There are two sets of fixing holes 37 and bolts on the diagonally opposite sides of the beam, and the four rings are connected with a wire rope. When hanging the wallboard, put two vertical bars into the two end faces of the wall, pull out the fixed bolts, and use the crane to lift the wire ropes on the four lifting holes. The two ends of the lifting ring are lifted up, and the two ends of the vertical bar are stuck to the wallboard. End face until lifting.

The overall column-mounted thermal insulation wall panel is also vertically corrected and fixed. The wall panel vertical and correction support adjustment brackets are matched with the overall column-insulated wall panel construction process. It is composed of the upper ∩ type card 23, ∩ There are fixing screws under the type of card, and the upper part is welded with a hinge to connect with the steel pipe. The lower part of the steel pipe has adjusting screws. The lower steel pipe of the adjusting screw has a hinge and is connected with the base, and the steel nail is welded under the base. When the whole column is insulated and the wall board is hung on the foundation, the ∩ type card is stuck on the top of the wall panel, the screw is tightened, the weight is pressed on the base, and the verticality is adjusted by the adjusting screw, and the crane hook can be removed.

Claims

The utility model relates to a whole column heat insulating wall board, which comprises: a concrete layer on both sides of the wall board, a glass fiber mesh and a steel mesh frame inside, and an intermediate layer is an insulating layer (insulation material such as foamed cement or polyphenyl foam board) obliquely inserted steel bar The two layers of steel mesh are connected into a steel skeleton through the insulation layer, and the door, the window, the water, the electricity and the gas pipeline are made together, the wall plate groove is surrounded, and the steel bar connector is provided. The process is characterized in that the whole column is insulated with the wall plate. At the time of production, the column is made at the end face, and the column is full of concrete reinforcement structure, which is connected with the wall panel to form an integral column insulation wall panel.
The overall production process of the column-mounted thermal insulation wallboard according to claim 1, characterized in that: in the production, the pillar steel cage and the integral wall steel grid are respectively arranged, and the two are connected by steel bars, leaving a gap, when spreading After the trigger lays the bottom concrete in the baffle, put the combined column steel cage and the integral wall steel grid on the concrete, and shake the lower part into the concrete. When the insulation layer is used, the pillar reinforcement cage and the whole A partition plate is placed between the wall steel mesh frames, and the thermal insulation material slurry (such as foamed cement, foam particle slurry, etc.) is poured into the integral wall steel mesh frame according to a certain thickness. After the thermal insulation layer is solidified, the steel cage and the steel bar are taken out. The grid spacers are spread out with a spreader.
The production process of the integral column-insulated wall panel according to claim 1, wherein: in the production, the column steel cage and the integral wall foam board steel grid plate are respectively arranged, and the two are connected by steel bars, and the trigger is spread. After the bottom concrete is laid in the baffle, the combined pillar steel cage and the integral wall steel foam grid plate are placed on the concrete, the lower part is oscillated into the concrete, slightly condensed, and the concrete layer is spread by the spreader machine. .
The joint process of the integral pillared thermal insulation wall panel according to claim 1 in the building and the foundation, characterized in that: the suspended casting connection method, when the local (over) beam reinforcement cage is placed on the foundation, a plurality of reinforcement cages are placed Cement block, the whole column wall panel is hung on the block, the adjustment bracket is fixed, the position is adjusted, the verticality is adjusted, the steel bar at the lower end of the column is welded with the base column bar, and the ground beam reinforcement cage is cross-connected. The upper form is cast concrete, and the feed port is higher than the beam height.
The method for connecting the integral column-insulated wall panel according to claim 1 to the foundation in the building, characterized in that: the semi-suspended casting method is used to first cast the lintel portion and the roof portion except the column rib, and then plaster after condensing. Hanging the integral column insulation wall board, welding or connecting the wall column pillars and the foundation column bars, and then pouring the concrete into the formwork.
The jointing process of the integral column-insulated wallboard according to claim 1 in the building and the foundation is characterized in that: the steel plate welding method, the integral column-mounted thermal insulation wallboard adopts the upper and lower end faces of the column to pre-embed the steel plate, slightly higher On the bottom of the wall, the foundation corresponding to the column is also embedded in the steel plate. The slab is smeared on the over-ground beam to hang the integral column-insulated wall panel. The lower-end steel plate is aligned with the steel plate on the foundation, and the fixed adjustment bracket is adjusted. The wall panel is perpendicular to the weld.
The method for connecting an integral column-mounted thermal insulation wall panel according to claim 1 in two adjacent blocks, The sign is: using the direct welding method, the side end face or the side end face of the wall plate with the column end face is opposite to the column surface, forming a linear, T-shaped, right-angled connection, leaving a proper gap, and connecting the joints with soldering iron Solder firmly, the gap is filled with sandstone concrete.
The method for connecting an integral column-mounted thermal insulation wall panel according to claim 1 to two adjacent wall panels in a corner of a building, characterized in that: a 45-degree connection method is adopted, and an end face of the integral column-mounted thermal insulation wall column is made At a 45-degree angle, the two wall panels are combined at a 90-degree angle to form a corner post, leaving a proper gap, and the joints are welded with a soldering iron and filled with sand-stone concrete.
The integral pillared thermal insulation wall panel of claim 1 wherein the interior and exterior layers are provided with a facing layer.
The invention relates to the production and construction process of the integral column-insulated wallboard according to any one of claims 1, 2, 3, 4, 5, 6, 7, 8, and 9, and adopts a beam-passing pipe supporting die when the cast-in-place top die is used. The method is characterized in that: the template on both sides of the beam is pressed according to a certain height - 3 cm below the cast-in-place top (two layers of template thickness), and a plurality of holes are excavated at a certain distance, and the size can pass through the plastic sleeve and the plastic tube Set the steel cage into the ground (over) beam, wear the template on both sides of the wall, and then wear the shelf tube. The shelf tube extends 1 meter to the outside of the wall, and the other end is inserted into the beam template hole of the opposite wall. Inside, the small sleeve of cement on the underside of the plastic sleeve is used to support the shelf tube. The shelf tube is drilled, bolted, and fixed on both sides of the steel cage at the appropriate position inside and outside the wall. The template on the side of the wall and the template on the interior wall are lower than The outer formwork has a cast-in-place height and a stencil thickness. The branch pipe is supported under the shelf tube. The slats are about 5 cm wide on the shelf tube, and the formwork is laid on the slats to carry out concrete pouring. After, go to the branch, go to the slats, go to the pin, pull the shelf tube, go to the template, block the tube hole, the shelf tube goes out 1 meter Roof rack outside the building or template bracket.
A plate-feeding machine matched with the process as claimed in claim 1 or 2 or 3, wherein the plate-lifting machine has two sets of beams, and one of the two beams is welded with a vertical bar below, and the height of the vertical bar exceeds the wall. The thickness of the plate is connected to a fixed support on the other end of the two beams, and a lifting ring is welded on each of the fixed supports, and then the two sets of beams are arranged alternately on one side of the vertical bar, and four steel pipes are welded in the middle of the two sets of four beams. The shaft hole is inserted into the two sets of steel pipes by two shafts, and two sets of fixing holes and bolts are arranged diagonally on the four beams, and the wire ropes are connected to the four rings.
The support adjustment bracket matched with the process according to any one of claims 1, 2, 3, 4, 5, 6, 7, 8, and 9 is characterized in that: an upper ∩ type card, a fixing screw under the 卡 type card The upper right part is welded with a hinge and a steel pipe. The lower part of the steel pipe has an adjusting screw. The lower part of the adjusting screw has a hinge and is connected with the base, and a steel nail is welded under the base.