House building adjustable concrete protection layer control device

Abstract

The utility model relates to the technical field of house building construction, in particular to a house building adjustable concrete protection layer control device which comprises a supporting plate, an anti-sticking plate is fixed to the top of the supporting plate, a plurality of anti-sticking cavities are formed in the top of the anti-sticking plate, and a plurality of supporting plate bolt holes are formed in the supporting plate and the anti-sticking plate in a penetrating mode. A bolt hole is formed in each supporting plate, a supporting bolt is connected into the bolt hole of each supporting plate in a meshed mode, a clamping ring is arranged at the top of each supporting bolt, two transverse steel bars are arranged at the top of each clamping ring, a protective pipe is arranged outside each supporting bolt, a connecting gear is arranged at the bottom of each supporting bolt, and a measuring disc is further arranged at the bottom of each supporting plate. The transverse reinforcing steel bar can be clamped through the clamping rings, so that the transverse reinforcing steel bar is prevented from sliding, the stability of the transverse reinforcing steel bar is guaranteed, meanwhile, the protection pipe of the equipment can stretch out and draw back along with up-down movement of the supporting bolt, and concrete can be prevented from being bonded with the supporting bolt.

Description

Technical Field

[0001] The utility model belongs to the technical field of building construction, in particular to an adjustable concrete protective layer control device for building construction. Background Art

[0002] In housing construction projects, the concrete cover is an important part of the concrete component that protects the steel bars and prevents them from being directly exposed. Accurate control of the thickness of the cover is crucial to ensure the safety, durability and functionality of the building structure.

[0003] However, the traditional construction method cannot adjust the thickness of the protective layer during the pouring process, which makes the thickness of the protective layer uneven and the protective effect of the protective layer poor. At the same time, the existing protective layer control device is difficult to disassemble after the pouring is completed, which makes the equipment difficult to reuse. In this regard, the utility model designs an adjustable concrete protective layer control device for building construction to solve the above problems. Utility Model Content

[0004] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides an adjustable concrete protective layer control device for building construction, which effectively solves the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an adjustable concrete protective layer control device for building construction, comprising a support plate, an anti-sticking plate is fixed on the top of the support plate, a plurality of anti-sticking cavities are arranged on the top of the anti-sticking plate, a plurality of support plate bolt holes are penetrated on the support plate and the anti-sticking plate, a support bolt is meshed and connected inside each of the support plate bolt holes, a clamping ring is arranged on the top of each of the support bolts, the plurality of clamping rings are divided into two groups, two transverse steel bars are arranged on the top of each group of the clamping rings, a steel bar ring is fixed to the outside of the top of the plurality of transverse steel bars by binding wires, a protective tube is arranged on the outside of each of the support bolts, a connecting bearing is arranged at the bottom of each of the support bolts, a connecting gear is arranged at the bottom of each of the connecting bearings, the outer rings of the plurality of connecting bearings are fixedly connected by a connecting rod, a measuring disk is also arranged at the bottom of the support plate, a measuring disk positioning plate is arranged outside the measuring disk, the top of the measuring disk positioning plate is fixedly connected to the support plate, a measuring ruler is wound inside the measuring disk, and a rotating handle is also arranged at the bottom of the front support bolt.

[0006] Preferably, a measuring scale stabilizing plate is fixed between the two middle groups of connecting rods, a measuring plate is fixed in the middle of the measuring scale stabilizing plate, the top of the measuring plate is fixedly connected to the measuring scale, the measuring disk is rotatably connected to the measuring disk positioning plate via a measuring disk rotating shaft, a measuring disk spring is fixed to the outside of the measuring disk positioning plate, and the other end of the measuring disk spring is fixedly connected to the right side of the measuring disk positioning plate.

[0007] Preferably, a plurality of clamping tubes are fixed on the top of the support plate, a plurality of clips are fixed on the top of each clamping tube, each group of clips is slidably connected to a protective chassis in the cavity of the clamping tube, and the top of each protective chassis is fixedly connected to the protective tube.

[0008] Preferably, a clamping ring positioning plate is fixed on the top of each protective tube, each clamping ring positioning plate is fixedly connected to the clamping ring on its top, a positioning plate bolt hole is provided inside each clamping ring positioning plate, and each positioning plate bolt hole is meshedly connected to the support bolt at its bottom.

[0009] Preferably, the bottom of each supporting bolt is fixedly connected to the inner ring of the connecting bearing at its bottom via a rotating shaft, a bolt rotating shaft is also fixed to the bottom of the inner ring of each connecting bearing, a positioning plate is fixed to the bottom of each bolt rotating shaft, each positioning plate is fixedly connected to the connecting gear inside it, a plurality of connecting gears are meshedly connected via a chain, and the top of the rotating handle is fixedly connected to the positioning plate at its top via a rotating shaft.

[0010] Compared with the prior art, the beneficial effects of the utility model are:

[0011] (1) The utility model can clamp the transverse steel bars through the clamping ring, thereby preventing the transverse steel bars from sliding, thereby ensuring the stability of the transverse steel bars. At the same time, the protective pipe of the equipment can be extended and retracted as the supporting bolts move up and down, thereby preventing the concrete from sticking to the supporting bolts. After the protective layer solidifies, the supporting bolts can be easily removed, so that the entire equipment can be reused, thereby saving resources.

[0012] (2) The utility model can drive one of the positioning plates to rotate by rotating the rotating handle, thereby driving one of the connecting gears to rotate, thereby driving the chain to rotate, thereby driving multiple connecting gears to rotate simultaneously, thereby driving multiple clamping ring positioning plates to move simultaneously, thereby ensuring that the transverse steel bars remain horizontal when moving up and down, thereby ensuring the uniform thickness of the protective layer, thereby ensuring the casting effect of the protective layer. At the same time, the equipment can prevent the support bolts from deflecting through multiple connecting bearings and connecting rods, thereby further ensuring the stability of multiple clamping rings, thereby ensuring the stability of the transverse steel bars.

[0013] (3) The utility model can make the measuring ruler stabilizing plate move up and down by rotating the supporting bolts. At this time, due to the effect of the measuring disk spring and the measuring disk rotating shaft, the measuring ruler can be tightened and rotated around the measuring disk at the same time, so that the staff can monitor the distance between the measuring ruler stabilizing plate and the supporting plate through the numerical value on the measuring ruler, thereby achieving the purpose of measuring the distance between the clamping ring and the anti-sticking plate, thereby changing the thickness of the protective layer, thereby ensuring the accuracy of the protective layer, thereby ensuring the casting effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention.

[0015] In the attached picture:

[0016] Figure 1 It is an overall schematic diagram of the utility model;

[0017] Figure 2 This is a schematic diagram of the bottom of the utility model;

[0018] Figure 3 This is a schematic diagram of the protection mechanism of the utility model;

[0019] Figure 4 This is a schematic diagram of the interior of the protective mechanism of the utility model;

[0020] Figure 5 This is a schematic diagram of the bottom of the clamping mechanism of the utility model;

[0021] Figure 6 This is a schematic diagram of the bolt connection mechanism of the utility model;

[0022] Figure 7 It is a schematic diagram of the measuring mechanism of the utility model.

[0023] In the figure: 1-support plate; 2-transverse steel bar; 3-support bolt; 4-rotating handle; 5-measuring ruler; 6-protective tube; 7-clamping ring; 101-anti-sticking cavity; 102-support plate bolt hole; 103-anti-sticking plate; 201-steel ring; 202-binding wire; 301-connecting bearing; 302-positioning plate; 303-connecting gear; 304-connecting rod; 305-chain; 306-bolt shaft; 401-rotating shaft; 501-measuring plate; 502-measuring disk shaft; 503-measuring disk spring; 504-measuring disk positioning plate; 505-measuring disk; 506-measuring ruler stabilizing plate; 601-protective chassis; 602-clamping tube; 603-buckle; 701-clamping ring positioning disk; 702-positioning disk bolt hole. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments; based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0025] Embodiment 1, by Figure 1-2、 Figure 6The utility model includes a support plate 1, which is made of alloy material. The support plate 1 is used to fix the anti-sticking plate 103. The anti-sticking plate 103 is fixed on the top of the support plate 1. The anti-sticking plate 103 is made of rubber material. The anti-sticking plate 103 can prevent the concrete from sticking to the support plate 1. A plurality of anti-sticking cavities 101 are arranged on the top of the anti-sticking plate 103. The anti-sticking cavities 101 reduce the friction between the concrete and the anti-sticking plate 103. A plurality of support plate bolt holes 102 are penetrated through the support plate 1 and the anti-sticking plate 103. The support plate bolt holes 102 are internally provided with threads so as to position the support bolts 3. A support bolt 3 is meshed and connected inside each of the support plate bolt holes 102. The supporting bolts 3 are made of alloy material, and the supporting bolts 3 can drive the clamping ring positioning plate 701 to move up and down by moving up and down. A clamping ring 7 is provided on the top of each supporting bolt 3, and the clamping ring 7 adopts a semi-annular structure. The clamping ring 7 is made of alloy material, and the clamping ring 7 is elastic, so that the transverse steel bars 2 of different sizes can be clamped, and the transverse steel bars 2 can be prevented from moving. The multiple clamping rings 7 are divided into two groups, and each group of the clamping rings 7 is provided with two transverse steel bars 2 on the top, and the top of the multiple transverse steel bars 2 is fixed with a steel bar ring 201 by a wire tie 202. The wire tie 202 is made of iron wire. The steel bar ring 201 and the transverse steel bar 2 can ensure the firmness of the concrete. Each supporting bolt 3 is provided with a protective tube 6 on the outside, the protective tube 6 is made of soft material, the protective tube 6 is retractable, so as to prevent the outside of the support bolt 3 from adhering to the concrete, so as to ensure that the support bolt 3 can be easily disassembled, so as to ensure that the entire equipment can be reused, thereby increasing the use range of the equipment, each support bolt 3 is provided with a connecting bearing 301 at the bottom, the connecting bearing 301 is used to position the support bolt 3, each connecting bearing 301 is provided with a connecting gear 303 at the bottom, and the outer rings of the plurality of connecting bearings 301 are fixedly connected by a connecting rod 304, the connecting rod 304 is made of alloy material, and the connecting rod 304 is used to connect the plurality of connecting bearings 301, so as to ensure that the height of the plurality of support bolts 3 is maintained Consistent, thereby ensuring that the transverse steel bars 2 are level, thereby ensuring that the thickness of the protective layer is consistent, thereby ensuring the accuracy of the protective layer, a measuring disc 505 is also provided at the bottom of the support plate 1, the measuring disc 505 is made of alloy material, the measuring disc 505 is used to position the measuring ruler 5, a measuring disc positioning plate 504 is provided outside the measuring disc 505, the measuring disc positioning plate 504 is made of alloy material, the measuring disc positioning plate 504 is used to position the measuring disc 505, the top of the measuring disc positioning plate 504 is fixedly connected to the support plate 1, a measuring ruler 5 is wound inside the measuring disc 505, the measuring ruler 5 is provided with a size, and the measuring ruler 5 can display the distance between the measuring ruler stabilizing plate 506 and the support plate 1,Thus, the distance between the anti-sticking plate 103 and the transverse steel bar 2 can be monitored, so that the thickness of the protective layer can be monitored. A rotating handle 4 is also provided at the bottom of the front support bolt 3. The rotating handle 4 is made of alloy material and can drive the front support bolt 3 to rotate.

[0026] Embodiment 2, based on embodiment 1, Figure 3-5 , Figure 7It is given that a measuring ruler stabilizing plate 506 is fixed between the two groups of connecting rods 304 in the middle, and the measuring ruler stabilizing plate 506 is made of alloy material. The measuring ruler stabilizing plate 506 is used to position the measuring plate 501. A measuring plate 501 is fixed in the middle of the measuring ruler stabilizing plate 506, and the measuring plate 501 is made of alloy material. The measuring plate 501 is used to fix the measuring ruler 5. The top of the measuring plate 501 is fixedly connected to the measuring ruler 5. The measuring disk 505 is rotatably connected to the measuring disk positioning plate 504 through the measuring disk rotating shaft 502. The measuring disk rotating shaft 502 is used to position the measuring disk 505. A measuring disk spring 503 is fixed to the outside of the measuring disk positioning plate 504. The measuring disk spring 503 The measuring disc spring 503 is elastic, so that the measuring ruler 5 can be tightened. The other end of the measuring disc spring 503 is fixedly connected to the right side of the measuring disc positioning plate 504. A plurality of clamping tubes 602 are also fixed on the top of the support plate 1. The clamping tubes 602 are made of alloy material. The clamping tubes 602 are used to position the buckles 603. A plurality of buckles 603 are fixed on the top of each clamping tube 602. The buckles 603 are made of alloy material. The buckles 603 are used to position the protective chassis 601. Each group of buckles 603 is slidably connected with a protective chassis 601 in the cavity of the clamping tube 602. The protective chassis 601 is made of rubber material. The protective chassis 601 is used to position the protective tube 6. The top of each protective chassis 601 The top of each protective tube 6 is fixedly connected to the protective tube 6, and a clamping ring positioning plate 701 is fixed on the top of each protective tube 6. The clamping ring positioning plate 701 is made of alloy material. The clamping ring positioning plate 701 is used to fix the clamping ring 7. Each clamping ring positioning plate 701 is fixedly connected to the clamping ring 7 on its top. A positioning plate bolt hole 702 is provided inside each clamping ring positioning plate 701. The positioning plate bolt hole 702 is provided with a thread inside. The positioning plate bolt hole 702 is used to position the supporting bolt 3. Each positioning plate bolt hole 702 is meshed and connected with the supporting bolt 3 at its bottom. The bottom of each supporting bolt 3 is fixedly connected to the inner ring of the connecting bearing 301 at its bottom through a rotating shaft. Each connecting bearing A bolt shaft 306 is also fixed at the bottom of the inner ring 301. The bolt shaft 306 is made of alloy material and is used to position the positioning plate 302. A positioning plate 302 is fixed at the bottom of each bolt shaft 306. The positioning plate 302 is made of alloy material and is used to position the connecting gear 303 while preventing the chain 305 from falling. Each positioning plate 302 is fixedly connected to the connecting gear 303 inside it. Multiple connecting gears 303 are meshed and connected through chains 305. The cooperation between the chains 305 and the multiple connecting gears 303 can make the multiple supporting bolts 3 rotate synchronously, so that the heights of the multiple connecting gears 303 are consistent.In order to ensure that the transverse reinforcement 2 is always horizontal, the top of the rotating handle 4 is fixedly connected to the positioning plate 302 at its top through a rotating shaft 401, and the rotating shaft 401 is made of alloy material and is used to fix the rotating handle 4;

[0027] When using this equipment, the staff can fix the transverse steel bar 2 and the multiple steel bar rings 201 through multiple tying wires 202, and further the staff can clamp the clamping ring 7 on the bottom transverse steel bar 2 in turn. At this time, the clamping ring positioning plate 701 can be prevented from sliding due to the material of the clamping ring 7. At this time, the multiple protective tubes 6 droop, and further the staff inserts the multiple supporting bolts 3 into the positioning plate bolt holes 702 in turn, and further tightens the supporting bolts 3 and the positioning plate bolt holes 702 to prevent the support plate 1 from falling, and further the staff clamps the multiple protective chassis 601 into the cavity of the clamping tube 602 and the buckle 603 at the bottom thereof, so as to prevent the concrete from freezing. The soil adheres to the support bolt 3, and the staff further rotates the rotating handle 4, thereby driving the positioning plate 302 to rotate, thereby driving one of the connecting gears 303 to rotate, thereby driving the chain 305 to rotate, thereby driving the remaining connecting gears 303 to rotate, thereby driving multiple support bolts 3 to rotate at the same time. At this time, the connecting rod 304 can prevent the support bolt 3 from deflecting, and then the support plate 1 can be driven up and down by multiple support bolts 3, thereby changing the distance between the anti-sticking plate 103 and the transverse steel bar 2. At this time, due to the action of the measuring disk shaft 502 and the measuring disk spring 503, the measuring ruler 5 can be wound around the measuring disk 505. The measuring ruler 5 is made tight. At this time, the staff can monitor the size of the top exposed of the measuring ruler 5, so as to judge the distance between the measuring ruler stabilizing plate 506 and the support plate 1, so as to calculate the distance between the anti-sticking plate 103 and the transverse reinforcement 2. When the distance between the transverse reinforcement 2 and the anti-sticking plate 103 is the required size, that is, the required protective layer thickness, the staff stops rotating the rotating handle 4, and further the staff supports the support plate 1 through the support rod to prevent the support plate 1 from falling. Further the staff seals the support plate 1 with baffles all around, and further the staff pours concrete on the top of the support plate 1 to further complete the pouring of the protective layer. When the protective layer solidifies, the staff The operator controls the rotating handle 4 to reverse, thereby reversing the supporting bolt 3. At this time, the protective tube 6 can prevent the supporting bolt 3 from adhering to the concrete. At this time, the anti-sticking plate 103 is in close contact with the protective layer, so that the supporting bolt 3 can be separated from the positioning plate bolt hole 702 on its top. At this time, the supporting plate 1 can be easily disassembled due to the anti-sticking plate 103 and the anti-sticking cavity 101. At this time, due to the material of the protective chassis 601 and the structure of the buckle 603, the supporting bolt 3 can be separated from the anti-sticking plate 103, thereby separating the supporting plate 1 from the protective layer, thereby ensuring the reuse of the equipment. At this time, the supporting bolt 3 and the clamping ring 7 are cast into the protective layer.The staff further pours concrete into the holes of the support bolts 3 to ensure the integrity of the protective layer.

[0028] The working process of the utility model is as follows: when using the device, the staff can fix the transverse steel bar 2 and the multiple steel bar rings 201 through multiple tying wires 202, and further the staff successively clamps the clamping ring 7 on the bottom transverse steel bar 2. At this time, due to the material of the clamping ring 7, the clamping ring positioning plate 701 can be prevented from sliding. At this time, the multiple protective tubes 6 droop, and further the staff successively inserts the multiple supporting bolts 3 into the positioning plate bolt holes 702, and further tightens the supporting bolts 3 and the positioning plate bolt holes 702 to prevent the support plate 1 from falling, and further the staff clamps the multiple protective chassis 601 to the clamping tubes 602 and the buckles 603 at the bottom thereof. The support plate 103 is moved up and down by the plurality of support bolts 3. The distance between the anti-sticking plate 103 and the transverse reinforcement 2 can be changed. At this time, the measuring disc rotating shaft 502 and the measuring disc spring 503 can make the measuring ruler 5 wrap around the measuring disc. 505, and at the same time, the measuring ruler 5 is tightened. At this time, the staff can monitor the size of the top of the measuring ruler 5 exposed, so as to determine the distance between the measuring ruler stabilizing plate 506 and the support plate 1, and thus calculate the distance between the anti-sticking plate 103 and the transverse reinforcement 2. When the distance between the transverse reinforcement 2 and the anti-sticking plate 103 is the required size, that is, the required protective layer thickness, the staff stops rotating the rotating handle 4, and further the staff supports the support plate 1 through the support rod to prevent the support plate 1 from falling. Further, the staff seals the surroundings of the support plate 1 with baffles, and further the staff pours concrete on the top of the support plate 1 to further complete the pouring of the protective layer. When the protective layer solidifies After that, the staff controls the rotating handle 4 to reverse, so that the supporting bolt 3 is reversed. At this time, the protective tube 6 can prevent the supporting bolt 3 from sticking to the concrete. At this time, the anti-sticking plate 103 is in close contact with the protective layer, so that the supporting bolt 3 can be separated from the positioning plate bolt hole 702 on its top. At this time, the supporting plate 1 can be easily disassembled due to the anti-sticking plate 103 and the anti-sticking cavity 101. At this time, due to the material of the protective chassis 601 and the structure of the buckle 603, the supporting bolt 3 can be separated from the anti-sticking plate 103, so that the supporting plate 1 is separated from the protective layer, thereby ensuring the reuse of the equipment. At this time, the supporting bolt 3 and the clamping ring 7 are cast into the protective layer.The staff further poured concrete into the holes of the support bolts 3 to ensure the integrity of the protective layer.

[0029] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An adjustable concrete cover control device for building construction, characterized in that: The invention comprises a support plate (1), the top of which is fixed with an anti-sticking plate (103), the top of which is provided with a plurality of anti-sticking cavities (101), the support plate (1) and the anti-sticking plate (103) are provided with a plurality of support plate bolt holes (102), each of which is internally meshed with a support bolt (3), the top of each of which is provided with a clamping ring (7), the plurality of clamping rings (7) are divided into two groups, the top of each group of clamping rings (7) is provided with two transverse steel bars (2), the top of each of which is externally fixed with a steel bar ring (201) by means of a wire tie (202), and each of which is provided with a plurality of support plate bolt holes (102). A protective tube (6) is provided on the outside of the support bolt (3); a connecting bearing (301) is provided on the bottom of each support bolt (3); a connecting gear (303) is provided on the bottom of each connecting bearing (301); the outer rings of a plurality of connecting bearings (301) are fixedly connected via a connecting rod (304); a measuring disk (505) is provided on the bottom of the support plate (1); a measuring disk positioning plate (504) is provided on the outside of the measuring disk (505); the top of the measuring disk positioning plate (504) is fixedly connected to the support plate (1); a measuring ruler (5) is wound around the inside of the measuring disk (505); and a rotating handle (4) is provided on the bottom of a front support bolt (3).

2. The adjustable concrete cover control device for building construction according to claim 1, characterized in that: A measuring scale stabilizing plate (506) is fixed between the two middle groups of connecting rods (304); a measuring plate (501) is fixed to the middle of the measuring scale stabilizing plate (506); the top of the measuring plate (501) is fixedly connected to the measuring scale (5); the measuring disk (505) is rotatably connected to the measuring disk positioning plate (504) via a measuring disk rotating shaft (502); a measuring disk spring (503) is fixed to the outside of the measuring disk positioning plate (504); the other end of the measuring disk spring (503) is fixedly connected to the right side of the measuring disk positioning plate (504).

3. The adjustable concrete cover control device for building construction according to claim 2 is characterized in that: A plurality of clamping tubes (602) are also fixed on the top of the support plate (1), a plurality of buckles (603) are fixed on the top of each clamping tube (602), a protective chassis (601) is slidably connected to the cavity of each group of buckles (603) and the clamping tube (602), and the top of each protective chassis (601) is fixedly connected to the protective tube (6).

4. The adjustable concrete cover control device for building construction according to claim 3 is characterized in that: A clamping ring positioning plate (701) is fixed on the top of each protective tube (6), and each clamping ring positioning plate (701) is fixedly connected to the clamping ring (7) on its top. A positioning plate bolt hole (702) is provided inside each clamping ring positioning plate (701), and each positioning plate bolt hole (702) is meshedly connected with the supporting bolt (3) at its bottom.

5. The adjustable concrete cover control device for building construction according to claim 4 is characterized in that: The bottom of each supporting bolt (3) is fixedly connected to the inner ring of the connecting bearing (301) at the bottom thereof via a rotating shaft, a bolt rotating shaft (306) is also fixedly provided at the bottom of the inner ring of each connecting bearing (301), a positioning plate (302) is fixedly provided at the bottom of each bolt rotating shaft (306), each positioning plate (302) is fixedly connected to the connecting gear (303) inside it, a plurality of connecting gears (303) are meshedly connected via a chain (305), and the top of the rotating handle (4) is fixedly connected to the positioning plate (302) at the top thereof via a rotating shaft (401).

Images