CN210563185U

CN210563185U - Special double-deck elevated ventilation elastic construction of solid wood floor in professional basketball court

Info

Publication number: CN210563185U
Application number: CN201921110574.9U
Authority: CN
Inventors: 白相义
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-07-16
Filing date: 2019-07-16
Publication date: 2020-05-19
Anticipated expiration: 2029-07-16

Abstract

The utility model discloses a special wood floor double-deck elevated ventilation elastic construction in professional basketball place, including horizontal keel, horizontal keel's bottom is equipped with the cushion, and cushion and horizontal keel bolted connection, and the quantity of cushion is a plurality of, and horizontal keel's top is equipped with perpendicular fossil fragments. This special wood floor double-deck elevated ventilation elastic construction in professional basketball place, through the pole setting, cooperation between loop bar and the buckle closure, under the effect of fixture block and U-shaped groove, make the floor can install fast and dismantle with wool board and horizontal and vertical fossil fragments, and then realize that the floor is complete nothing is scarce, recycle, use cost is reduced, thereby it is inconvenient with the dismantlement to overcome the installation of the special wood floor in traditional professional basketball place, staff's work load has been increased, make the staff easily feel the tired shortcoming of health, overcome the special wood floor in current professional basketball place and easily receive damp deformation and can not quick installation and dismantlement, practical function is single shortcoming, and is suitable for being generalized to use.

Description

Special double-deck elevated ventilation elastic construction of solid wood floor in professional basketball court

Technical Field

The utility model relates to a double-deck elevated ventilation elastic construction technical field of solid wood floor specifically is a special solid wood floor double-deck elevated ventilation elastic construction in professional basketball place.

Background

At present most stadiums and theatre stages all use motion solid wood floor, the characteristics of motion solid wood floor:

1. the beauty degree is as follows: the sports solid wood floor has natural grains, such as birch, camphorwood, pine, cedar and the like, and athletes can be more pleasurable during sports and can also decorate stadiums;

2. comfort level: athletes step on the real wood floor of sports, will feel very comfortable, certainly feel better in sports;

3. safety degree: the indoor gymnasium can select solid wood materials as ground materials in order to protect the physical safety of athletes, after all, the athletes need to pay attention to safety when taking exercise, and can be injured when in sports;

4. the moisture can not be absorbed: the sports solid wood floor is made of pure wood, so that the ground is kept dry, and if the sports floor is wetted, the sports solid wood floor is easy to damage, bulge and deform, and great potential safety hazards are caused;

5. the sun cannot be directly sunned: the sunlight cannot directly irradiate any wood floor, so that the sports solid wood floor is easy to expand to generate cracks;

generally speaking, sports wood floor is the ideal material of mating formation of stadiums and theatre stage, as long as make sports wood floor daily maintenance, just can compensate sports wood floor's shortcoming, in prior art, sports wood floor's installation often uses the nail to fix the sports wood floor that splices directly on the fossil fragments for sports wood floor's installation can not install fast and dismantle when changing or maintaining for sports wood floor, often can cause sports wood floor's damage, unable used cyclically, caused sports wood floor's wasting of resources, to these circumstances, for avoiding above-mentioned technical problem, it is necessary to provide a special purpose solid wood floor double-deck high frame ventilation elastic construction in basketball court in order to overcome prior art the defect.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a special solid wood floor double-deck elevated ventilation elastic construction in professional basketball place to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a special solid wood floor double-layer elevated ventilation elastic structure for professional basketball court comprises a transverse keel, wherein the bottom of the transverse keel is provided with a rubber mat which is in bolted connection with the transverse keel, the number of the rubber mats is multiple, the top of the transverse keel is provided with a vertical keel which is in bolted connection with the transverse keel, the number of the vertical keel and the number of the transverse keel are multiple, the top of the vertical keel is provided with a blank which is in bolted connection with the vertical keel, the top of the blank is provided with a vertical rod which is in bolted connection with the blank, the number of the vertical rods is multiple, the right side of the vertical rod is provided with a floor, the left end and the right end of the floor are both provided with mounting holes which are integrally arranged with the floor, the front side of the floor is provided with an insert block which is integrally arranged with the floor, the rear side of the floor is provided with a splicing groove which is integrally arranged with the floor, and the splicing groove is movably spliced with the insert block, and the inside of the mounting hole is provided with a loop bar, the loop bar is accommodated inside the floor and is in bolted connection with the floor, the number of the loop bar is the same as that of the upright poles, the bottom of the loop bar is provided with a clamping groove which is a through groove and is integrally arranged with the loop bar, the top of the loop bar is provided with a U-shaped groove, two U-shaped grooves are distributed at the left side and the right side of the top of the loop bar, the top end of the loop bar is provided with a ring clamp which is integrally arranged with the loop bar, a buckle cover is arranged right above the loop bar, the number of the buckle cover is the same as that of the loop bar, the left side and the right side of the buckle cover are provided with side grooves, two side grooves and the buckle cover are integrally arranged, the bottom of the buckle cover is provided with a stop block, two stop blocks and the buckle cover are integrally arranged, two wedge blocks are provided with wedge blocks which are integrally arranged with the stop blocks, and two wedge blocks are provided with anti-, the anti-slip pad is connected with the wedge block in an adhesive mode, the wedge block is movably clamped with the annular clamp, the top end of the vertical rod is provided with two clamping blocks, the two clamping blocks and the vertical rod are integrally arranged, the clamping blocks are provided with protruding points, the protruding points and the clamping blocks are integrally arranged, the clamping blocks are matched with the clamping grooves, and the clamping blocks are movably clamped with the U-shaped grooves.

Preferably, the joint of the floor and the wool board is provided with a noise reduction and moisture prevention isolation layer, and the noise reduction and moisture prevention isolation layer is connected with the vertical rod in a sleeved mode.

Preferably, the bottom of the floor is provided with a bottom groove, the bottom groove and the floor are arranged integrally, and the bottom groove is matched with the vertical rod.

Preferably, the top of the floor is sequentially provided with a cover coat and a wear-resistant layer from top to bottom, and the cover coat, the wear-resistant layer and the floor are bonded and connected.

Preferably, all be equipped with the fixed orifices on loop bar and the pole setting, and the pole setting passes through fixed orifices and loop bar bolted connection.

Compared with the prior art, the beneficial effects of the utility model are that: the double-layer elevated ventilation elastic structure of the solid wood floor special for the professional basketball court is characterized in that the floor can be quickly installed and detached with the wool board and the transverse and vertical keels under the action of the clamping block and the U-shaped groove through the matching among the vertical rods, the loop bars and the buckle covers, so that the floor is complete and can be recycled, the use cost is reduced, the defects that the solid wood floor special for the traditional professional basketball court is inconvenient to install and detach, the workload of workers is increased, the workers are easy to feel physical fatigue are overcome, the defects that the existing solid wood floor special for the professional basketball court is easy to damp and deform and cannot be quickly installed and detached are overcome, the practical function is single, the ventilation air permeability can be increased by adding two layers of keels at the bottom of the floor, insect-proof, corrosion-proof and moisture-proof additives can be added into the space between the keels, the service life of the whole floor is prolonged, and the rebound rate of, let sportsman's motion experience best, horizontal keel and vertical keel then increase the shock absorption nature on floor, the impact force of sportsman's knee joint and ankle joint has been reduced, let the motion more comfortable, the work efficiency and the life of this special solid wood floor double-deck high frame ventilation elastic construction in professional basketball court have been improved, staff's work load has been reduced, still let the special solid wood floor double-deck high frame ventilation elastic construction in current professional basketball court can obtain more endorsements on market, the product quality of this special solid wood floor double-deck high frame ventilation elastic construction in professional basketball court has been improved, user's purchasing cost has been saved, the wasting of resources of solid wood bottom plate has been avoided, and the basketball court is suitable for being generalized to use.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a connection diagram of the cross keels, the vertical keels and the rough boards of the present invention;

FIG. 3 is a connection diagram of the vertical rod, the loop bar and the buckle cover of the present invention;

fig. 4 is a schematic structural view of a portion a of fig. 1.

In the figure: 1. the novel anti-skid floor comprises a transverse keel, 2, a rubber mat, 3, a vertical keel, 4, a rough board, 5, a noise-reduction and moisture-proof isolation layer, 6, a floor, 7, an insert block, 8, a splicing groove, 9, a bottom groove, 10, a mounting hole, 11, a cover surface layer, 12, a wear-resistant layer, 13, a buckle cover, 14, an upright rod, 15, a fixing hole, 16, a clamping block, 17, a convex point, 18, a sleeve rod, 19, a clamping groove, 20, a U-shaped groove, 21, a ring clamp, 22, a side groove, 23, an insert block, 24, a wedge block, 25 and an anti-skid pad.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: a special purpose solid wood floor double-layer elevated ventilation elastic structure for professional basketball field comprises a transverse keel 1, wherein the transverse keel 1 is made of pinus sylvestris, the strength is high, the moisture-proof keel plays a role in supporting and providing elasticity for sports floor in a sports floor system to ensure the absorption of impact, a rubber pad 2 is arranged at the bottom of the transverse keel 1, the rubber pad 2 is formed by pressing regenerated rubber and natural virgin rubber, the technical requirements of different sports venues on various shock absorption and noise elimination can be met, the rubber pad 2 is in bolt connection with the transverse keel 1, the number of the rubber pads 2 is not less than four, a vertical keel 3 is arranged at the top of the transverse keel 1, the vertical keel 3 is in bolt connection with the transverse keel 1, the vertical keel 3 is made of pinus sylvestris, the strength is high, the moisture-proof keel plays a role in supporting and providing elasticity for sports floor in the sports floor system to ensure the absorption of impact, and the number of the vertical keel 3 and the transverse keel 1 is not less than, the top of the vertical keel 3 is provided with a rough board 4, the rough board 4 is a solid wood multilayer plywood, the rough board 4 is a plate which is formed by mutually and vertically tissue-culturing and gluing a group of solid wood veneers according to the wood grain direction, the material is light, the strength is good, the elasticity and the toughness are good, the rough board 4 is in bolt connection with the vertical keel 3, the top of the rough board 4 is provided with an upright pole 14, the upright pole 14 is made of metal and is used for connecting a loop bar 18, the floor 6 is connected with the rough board 4 and the vertical keel 3, the upright pole 14 is in bolt connection with the rough board 4, the number of the upright poles 14 is not less than four, the right side of the upright pole 14 is provided with the floor 6, the floor 6 is solid wood such as oak, beech, birch or water lily, the like, the top of the floor 6 is sequentially provided with a cover layer 11 and a wear-resistant layer 12 from top to bottom, the cover layer 11 is a colorless transparent oil-gas layer, consists of primer and a finish, the friction coefficient of the surface is between 0.4 and 0.7, the surface coating 11, the wear-resistant layer 12 and the floor 6 are bonded and connected, the joint of the floor 6 and the rough board 4 is provided with the noise-reduction moisture-proof isolation layer 5, the noise-reduction moisture-proof isolation layer 5 is connected with the upright stanchion 14 in a sleeved mode, the noise-reduction moisture-proof isolation layer 5 is made of non-woven fabrics, has the advantages of moisture resistance, ventilation, flexibility, light weight and no combustion-supporting, is used between the floor 14 and the rough board 3, not only effectively isolates moisture emitted upwards from the ground, but also eliminates noise generated by friction between the floor 14 and the rough board 3, the bottom of the floor 6 is provided with a bottom groove 9, the bottom groove 9 is used for accommodating the upright stanchion 14 and preventing the floor 6 from being uneven when being paved, the bottom groove 9 and the floor 6 are arranged integrally, the bottom groove 9 and the upright stanchion 14 are matched, the left end and the right end of the floor 6 are provided with mounting holes 10, the front side of the floor 6 is provided with an insert block 7, the insert block 7 and the floor 6 are arranged integrally, the rear side of the floor 6 is provided with a splicing groove 8, the splicing groove 8 and the floor 6 are arranged integrally, the splicing groove 8 and the insert block 7 are movably spliced, the floor 6 is connected end to end through the insert block 7 and the splicing groove 8, a loop bar 18 is arranged inside the mounting hole 10, the loop bar 18 is made of metal and is used for fixing the floor 6 on the upright stanchion 14, the floor 6 is quickly connected with the upright stanchion 14 through the loop bar 18, quick mounting is realized, nails are avoided during mounting, mounting efficiency is improved, meanwhile, the integrity of the floor 6 can be ensured during dismounting, replacement-free of the floor 6 is realized through polishing of a surface layer, use cost and resource waste are greatly reduced, the loop bar 18 is accommodated inside the floor 6, the loop bar 18 is in bolted connection with the floor 6, fixing holes 15 are arranged on the loop bar 18 and the upright stanchion 14, the upright rod 14 is connected with the loop bar 18 through the fixing hole 15 by bolts, the loop bar 18 and the upright rod 14 can be connected together through the fixing hole 15, the connection stability of the loop bar 18 and the upright rod 14 is improved, the number of the loop bars 18 is the same as that of the upright rods 14, the bottoms of the loop bars 18 are provided with clamping grooves 19, the clamping grooves 19 are used for accommodating the clamping blocks 16, the clamping grooves 19 are through grooves, the clamping grooves 19 and the loop bars 18 are integrally arranged, the tops of the loop bars 18 are provided with U-shaped grooves 20, the U-shaped grooves 20 are used for fixing the clamping blocks 16, the two U-shaped grooves 20 are distributed on the left side and the right side of the tops of the loop bars 18, the top ends of the loop bars 18 are provided with ring clamps 21, the ring clamps 21 are used for connecting wedge blocks 24, the buckle covers 13 and the loop bars 18 are connected together to seal the mounting hole 10 to prevent foreign matters from entering the mounting hole 10, the ring clamps 21 and the loop bars 18 are integrally arranged right above the loop bars 18, the number of the buckle cover 13 is the same as that of the loop bars 18, the left side and the right side of the buckle cover 13 are provided with edge grooves 22, the edge grooves 22 are used for prying the buckle cover 13 out of the mounting hole 10 by using a screwdriver when the buckle cover 13 is detached, the two edge grooves 22 are integrally arranged with the buckle cover 13, the bottom of the buckle cover 13 is provided with a stop 23, the stop 23 is used for abutting against the inner side of the upright stanchion 14 so that the block 16 and the U-shaped groove 20 are fully clamped, the two stop 23 and the buckle cover 13 are integrally arranged, the two stop 23 are provided with wedge blocks 24, the wedge blocks 24 are used for abutting against the bottom edge of the loop clamp 21 so that the buckle cover 13 is connected with the loop bars 18, the wedge blocks 24 and the stop 23 are integrally arranged, the two wedge blocks 24 are provided with anti-skid pads 25, the anti-skid pads 25 are made of rubber material and used for increasing friction force, so that the connection between the buckle cover 13 and the loop clamp 21 is tighter, the anti-skid pads 25 are bonded, and the top of pole setting 14 is equipped with fixture block 16, the material of fixture block 16 is the same with pole setting 14, fixture block 16 is used for connecting U-shaped groove 20, and two fixture blocks 16 set up with pole setting 14 as an organic whole, and be equipped with bump 17 on fixture block 16, the material of bump 17 is the same with fixture block 16, is used for increasing frictional force, the connection of bump 17 and mounting hole 10 is more firm, and bump 17 sets up with fixture block 16 as an organic whole, and fixture block 16 agrees with draw-in groove 19 mutually, and fixture block 16 and U-shaped groove 20 activity joint.

A special solid wood floor double-layer elevated ventilation elastic structure for a professional basketball court is composed of parts such as a transverse keel 1, a rubber mat 2, a vertical keel 3, a wool board 4, a noise-reduction and moisture-proof isolation layer 5, a floor 6, an insert block 7, a splicing groove 8, a bottom groove 9, a mounting hole 10, a cover layer 11, a wear-resistant layer 12, a buckle cover 13, a vertical pole 14, a fixing hole 15, a clamping block 16, a salient point 17, a sleeve rod 18, a clamping groove 19, a U-shaped groove 20 and the like, the main matching size of the parts, particularly the interference matching size and the related precision are rechecked before assembly, when the same part is fastened by a plurality of screws (bolts), the screws (bolts) need to be crossed, symmetrical, gradually and uniformly screwed, when the assembly is carried out, the transverse keel 1 and the vertical keel 3 are sequentially paved according to the size of the court, the length of the transverse keel 1 refers to the transverse size of the court, the length of the vertical keel 3 is according to the vertical size of a venue, the distance between the vertical keels 3 is according to the length of a floor 6 to be vertically paved, the transverse keel 1 and the vertical keel 3 are made of pinus sylvestris, the strength is high, the moisture-proof keel plays a role in supporting and providing elasticity for the sports floor in a sports floor system, the absorption of impact is guaranteed, the rubber pad 2 is fixed at the bottom of the transverse keel 1 by using bolts, the distance is controlled between 60 and 100CM during installation, the rubber pad 2 is made of regenerated rubber and natural virgin rubber through pressing, the technical requirements of various shock absorption and noise elimination of different sports venues can be met, the transverse keel 1 is fixed on a base layer of the venue, the vertical keel 3 and the wool board 4 are sequentially installed on the transverse keel 1, the wool board 4 is fixed on the vertical keel 3 by using bolts, the wool board 4 is made of solid wood multilayer plywood, and is a tissue culture board which is formed by mutually vertical gluing of a, the floor board is light in weight, good in strength and good in elasticity and toughness, the upright rod 14 is fixed on the rough board 4 through bolts, the position of the upright rod 14 needs to correspond to the position of a loop bar 18 on the floor board 6, the floor board 6 is perpendicular to the upright rod 14, the upright rod 14 is inserted into the loop bar 18 accommodated in the floor board 6, the clamping sleeve 18 and the upright rod 14 are made of metal materials, the stability is good, the strength is high, the clamping block 16 on the upright rod 14 extends into the clamping groove 19 and is finally clamped on the U-shaped groove 20, the floor board 6 is connected and fixed with the rough board 4, the top of the floor board 6 is provided with the mounting hole 10, the mounting hole 10 is fixedly provided with the buckle cover 13, the mounting hole 10 can be sealed by the buckle cover 13, the inconvenience caused by the foreign matter entering into the mounting hole 10 to remove the floor board 6 is avoided, the splicing groove 8 is arranged on the right side of the insert block 7 on the left side of, except that the first floor 6 is vertically installed with the upright post 14, when other floors 6 are installed in a closing and inserting mode, the floors need to be inclined at a certain angle, the inclination angle is 30-45 degrees, when the floors are disassembled, a screwdriver is used for prying the side groove 22 on the buckle cover 13, the buckle cover 13 is taken out of the loop bar 18, the screwdriver is used for vertically abutting against the upright post 14 on the fixture block 16, the floor 6 is pulled to enable the fixture block 16 to move into the loop bar 18 from the U-shaped groove 20, two ends of the floor 6 are moved, the floor 6 is completely taken down from the upright post 14, and the disassembly and assembly work of the double-layer high-frame ventilation elastic structure of the special solid wood floor for the professional basketball court is completed.

In the description of the present invention, it is to be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "one side", "top", "inner", "front", "center", "both ends", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "disposed," "connected," "fixed," "screwed" and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate medium, and may be connected through the inside of two elements or in an interaction relationship between two elements, unless otherwise specifically defined, and the specific meaning of the above terms in the present invention will be understood by those skilled in the art according to specific situations.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a special solid wood floor double-deck elevated ventilation elastic construction in professional basketball place, includes horizontal keel (1), its characterized in that: the bottom of the transverse keel (1) is provided with a rubber pad (2), the rubber pad (2) is in bolted connection with the transverse keel (1), the rubber pad (2) is in multiple quantity, the top of the transverse keel (1) is provided with a vertical keel (3), the vertical keel (3) is in bolted connection with the transverse keel (1), the vertical keel (3) and the transverse keel (1) are in multiple quantity, the top of the vertical keel (3) is provided with a blank (4), the blank (4) is in bolted connection with the vertical keel (3), the top of the blank (4) is provided with an upright post (14), the upright post (14) is in bolted connection with the blank (4), the vertical post (14) is in multiple quantity, the right side of the upright post (14) is provided with a floor (6), the left end and the right end of the floor (6) are provided with mounting holes (10), the mounting holes (10) and the floor (6) are arranged integrally, and the front side of the floor (6) is provided with an insert block (7), the insert block (7) and the floor (6) are arranged integrally, the rear side of the floor (6) is provided with a splicing groove (8), the splicing groove (8) and the floor (6) are arranged integrally, the splicing groove (8) and the insert block (7) are movably spliced, a loop bar (18) is arranged inside the mounting hole (10), the loop bar (18) is accommodated inside the floor (6), the loop bar (18) is in bolt connection with the floor (6), the number of the loop bar (18) is the same as that of the upright stanchions (14), the bottom of the loop bar (18) is provided with a clamping groove (19), the clamping groove (19) is a through groove, the clamping groove (19) and the loop bar (18) are arranged integrally, the top of the loop bar (18) is provided with a U-shaped groove (20), the two U-shaped grooves (20) are distributed on the left side and the right side of the top of the loop bar (18), the top of the loop bar (18) is provided with a loop clamp (21), and the loop clamp (21) and the loop bar (18) are arranged integrally, a buckle cover (13) is arranged right above the loop bar (18), the number of the buckle cover (13) is the same as that of the loop bar (18), the left side and the right side of the buckle cover (13) are provided with side grooves (22), the two side grooves (22) and the buckle cover (13) are arranged integrally, the bottom of the buckle cover (13) is provided with a stop block (23), the two stop blocks (23) and the buckle cover (13) are arranged integrally, wedge blocks (24) are arranged on the two stop blocks (23), the wedge blocks (24) and the stop blocks (23) are arranged integrally, the two wedge blocks (24) are provided with anti-skid pads (25), the anti-skid pads (25) are connected with the wedge blocks (24) in an adhesive manner, the wedge blocks (24) are movably clamped with the loop clamp (21), the top end of the upright rod (14) is provided with clamping blocks (16), the two clamping blocks (16) and the upright rod (14) are arranged integrally, and the clamping blocks (16) are provided with salient points (17), the salient point (17) and the clamping block (16) are arranged integrally, the clamping block (16) is matched with the clamping groove (19), and the clamping block (16) is movably clamped with the U-shaped groove (20).

2. The special purpose wooden floor double-layer elevated ventilation elastic structure for professional basketball court as claimed in claim 1, wherein: the joint of the floor (6) and the wool board (4) is provided with a silencing and damp-proof isolation layer (5), and the silencing and damp-proof isolation layer (5) is connected with the upright stanchion (14) in a sleeved mode.

3. The special purpose wooden floor double-layer elevated ventilation elastic structure for professional basketball court as claimed in claim 1, wherein: the bottom of the floor (6) is provided with a bottom groove (9), the bottom groove (9) and the floor (6) are arranged integrally, and the bottom groove (9) is matched with the vertical rod (14).

4. The special purpose wooden floor double-layer elevated ventilation elastic structure for professional basketball court as claimed in claim 1, wherein: the top of the floor (6) is sequentially provided with a finish coat (11) and a wear-resistant layer (12) from top to bottom, and the finish coat (11), the wear-resistant layer (12) and the floor (6) are bonded and connected.

5. The special purpose wooden floor double-layer elevated ventilation elastic structure for professional basketball court as claimed in claim 1, wherein: the loop bar (18) and the upright rod (14) are both provided with fixing holes (15), and the upright rod (14) is connected with the loop bar (18) through the fixing holes (15) by bolts.