CN215670784U - Three-layer keel structure for sports wood floor - Google Patents
Three-layer keel structure for sports wood floor Download PDFInfo
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- CN215670784U CN215670784U CN202121489030.5U CN202121489030U CN215670784U CN 215670784 U CN215670784 U CN 215670784U CN 202121489030 U CN202121489030 U CN 202121489030U CN 215670784 U CN215670784 U CN 215670784U
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Abstract
The utility model belongs to the field of sports wood floors, and particularly discloses a three-layer keel structure for a sports wood floor, which comprises a sports panel layer, a bearing plate layer, a primary double-layer combined keel, a secondary keel, an elastic gasket for connecting a main structure part, a leveling cushion block for leveling the structure and a bottom layer elastic shock pad; the lower end face of the motion panel layer is provided with a bearing panel layer, two sides of the lower end face of the bearing panel layer are connected with a first-level double-layer combined keel, and the first-level double-layer combined keel comprises a first-level keel and a second-level keel; the lower end face of the bearing plate is connected with a first layer of keel, the edge of the lower end of the first layer of keel is provided with an elastic gasket, and the elastic gasket is connected with a second layer of keel; the edge of the lower end of the second layer of keel is also provided with an elastic gasket which is connected with the second layer of keel; leveling cushion blocks are arranged on two sides of the bottom end of the second-level keel, and bottom elastic shock absorption cushions are arranged below the leveling cushion blocks.
Description
Technical Field
The utility model relates to the field of sports wood floors, in particular to a three-layer keel structure for a sports wood floor.
Background
The sports wood floor is used as an important component of sports such as basketball, volleyball, badminton and table tennis, and provides sports protection and sports optimization for athletes through specific performances such as impact absorption rate and ball rebound rate. In this process, too small an impact absorption rate may cause a player to continuously injure important parts of the body such as knees and ankles during jumping and running, and insufficient ball rebound rate may affect the player's performance during exercise. In addition, the poor uniformity of the movement performance of the entire sports wood floor system can also lead to the discomfort of the players during the game, making it difficult to obtain the optimal movement state.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a three-layer keel structure for sports wood floors so as to solve the problems in the background technology.
In order to achieve the purpose, the utility model provides the following technical scheme: a three-layer keel structure for a sports wood floor comprises a sports panel layer, a bearing plate layer, a primary double-layer combined keel, a secondary keel, an elastic gasket for connecting a main structure part, a leveling cushion block for leveling the structure and a bottom layer elastic shock pad; the lower end face of the moving panel layer is provided with a bearing plate layer, and the moving panel layer and the bearing plate layer are connected into a whole to form the uppermost layer part of the moving wood floor; two sides of the lower end face of the bearing plate layer are connected with a first-level double-layer combined keel, and the first-level double-layer combined keel comprises a first-level keel and a second-level keel; the lower end face of the bearing plate layer is connected with a first layer of keel, the edge of the lower end of the first layer of keel is provided with an elastic gasket, and the elastic gasket is connected with a second layer of keel; the edge of the lower end of the second layer of keel is also provided with an elastic gasket which is connected with the second layer of keel; leveling cushion blocks are arranged on two sides of the bottom end of the second-level keel, a bottom layer elastic damping pad is arranged below the leveling cushion blocks, and the bottom layer elastic damping pad is located at the bottommost layer of the moving wood floor structure.
Preferably, the moving panel layer is vertically stacked with the first-level double-layer combined keel after being connected with the bearing panel layer through the glue nails, and the bearing panel layer is connected with the first-level double-layer combined keel through the glue nails.
Preferably, the elastic gasket is sequentially arranged between the first layer keel and the second layer keel through gun nails and between the second layer keel and the second level keel, and the first layer keel, the elastic gasket, the second layer keel, the elastic gasket and the second level keel are sequentially and parallelly stacked and fixedly connected into a whole from top to bottom.
Preferably, the leveling cushion block is arranged at a fixed position below the double-layer combined keel and is connected into a whole through a gun nail.
Preferably, the elastic shock absorption pads are arranged in one-to-one correspondence with the side ends of the leveling cushion blocks, and are connected into a whole by using the gun nails.
Compared with the prior art, the utility model has the beneficial effects that:
according to the utility model, all parts in the structure are connected by adopting the glue nails and the gun nails, so that the structure is integrated, and the stability of the system is optimized. The rigidity of the upper layer of the structure can be directly enhanced by connecting the bearing plate and the one-level double-layer combined keel, so that better ball rebound rate is obtained. Through the combined use of the bottom layer elastic shock pad and the elastic gasket, the overall elasticity of the system is enhanced, and the impact absorption rate is improved.
The utility model can realize the requirement on the movement performance uniformity of the sports wood floor by setting the distribution of the bottom elastic cushion and the spacing of each layer of keel when being stacked. In addition, the utility model can also realize the adjustment of the motion performance parameters aiming at different motion categories by changing the distribution and the spacing in a certain interval.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
fig. 2 is an exploded view of the structure of the present invention.
In the figure: 1. a motion panel layer; 2. a load bearing slab layer; 3. a first-level double-layer combined keel; 4. a second level keel; 5. an elastic pad; 6. leveling cushion blocks; 7. an elastic shock pad.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "vertical", "upper", "lower", "horizontal", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Referring to fig. 1-2, the present invention provides a technical solution: a three-layer keel structure for a sports wood floor comprises a sports panel layer 1, a bearing plate layer 2, a first-level double-layer combined keel 3, a second-level keel 4, an elastic gasket 5 for connecting a main structure part, a leveling cushion block 6 for leveling the structure and a bottom layer elastic shock pad 7; the lower end surface of the moving panel layer 1 is provided with a bearing plate layer 2, and the moving panel layer 1 and the bearing plate layer 2 are connected into a whole to form the uppermost layer part of the moving wood floor; two sides of the lower end surface of the bearing plate layer 2 are connected with a first-stage double-layer combined keel 3, and the first-stage double-layer combined keel 3 comprises a first-layer keel and a second-layer keel; the lower end face of the bearing plate layer 2 is connected with a first layer of keel, the edge of the lower end of the first layer of keel is provided with an elastic gasket 5, and the elastic gasket 5 is connected with a second layer of keel; the edge of the lower end of the second layer of keel is also provided with an elastic gasket 5, and the second layer of keel 4 is connected through the elastic gasket 5; leveling cushion blocks 6 are arranged on two sides of the bottom end of the secondary keel 4, bottom layer elastic shock absorption pads 7 are arranged below the leveling cushion blocks 6, and the bottom layer elastic shock absorption pads 7 are located at the bottommost layer of the moving wood floor structure.
Further, after the moving panel layer 1 and the bearing panel layer 2 are connected through the glue nails, the moving panel layer and the bearing panel layer are vertically stacked with the one-level double-layer combined keel 3, and the bearing panel layer 2 and the one-level double-layer combined keel 3 are connected through the glue nails.
Further, elastic gasket 5 sets gradually between first layer fossil fragments and second floor fossil fragments through the rifle nail to and between second floor fossil fragments and second grade fossil fragments 4, first layer fossil fragments, elastic gasket 5, second floor fossil fragments, elastic gasket 5 and second grade fossil fragments 4 stack the fixed connection as a whole from last to down parallel in proper order.
Furthermore, the leveling cushion block 6 is arranged at a fixed position below the double-layer combined keel 3 and is connected into a whole through a gun nail.
Furthermore, the elastic shock absorption pads 7 and the side ends of the leveling cushion blocks 6 are arranged in a one-to-one correspondence mode and are connected into a whole through the gun nails.
In the example of the present invention, the two performance indexes of the absorption of impact and the rebound of ball were measured according to "wooden floor for GBT20239-2015 gym".
Example 1
According to the three-layer keel structure for the sports wood floor, which is newly researched, the impact absorption rate of the sports wood floor system is detected. The specific test contents are as follows:
the test principle is as follows: the falling hammer on the impact force detector falls freely, and the force sensor reflects the rebound force generated in the impact process for a test system consisting of a bearing head, a cylindrical spiral spring, an impact force sensor, a base, a test surface and the like; the impact absorption rate is calculated according to the following formula (1):
in the formula:
Fr-impact absorption rate%
Fw-the arithmetic mean of the impact absorption in newtons (N) of the wooden floors used in gymnasiums;
Fc-impact absorption arithmetic mean value for solid ground in newtons (N);
detecting the impact absorption rate of a 3 x 3m sports wood floor system with a three-layer keel shock absorption structure by adopting an impact force detector;
setting parameters of a test instrument: the mass of a drop hammer of the impact force tester is 20kg plus or minus 0.1kg, the ground plane is hard, the side surface is attached with a guide rail, the upper part is provided with a lifting device, and a retractable electromagnet is placed in the lifting device; the impact bearing head is made of hard steel and is arranged on the spring, and the upper surface of the impact bearing head is a spherical curved surface; the elastic coefficient of the spiral spring is 2000kN +/-60 kN/m; the ground of the base is a spherical curved surface, the edge curvature radius of the spherical curved surface is 1mm, and the diameter of the base is 70 mm; the force sensor is connected to an impact force tester, the sampling frequency of the tester is 120Hz, the duration time of a recording curve is 10ms, and the maximum measurement precision is 0.1%;
the test key points are as follows: 1. the impact force detector needs to be in a vertical mode, when the height of a drop hammer is 55mm, first non-record detection is carried out, and formal detection is carried out after 1min interval; 2. after each impact absorption detection is completed, the drop hammer should be reset as soon as possible; 3. in the testing process, 5 test points are selected on the surface of a 3 x 3m sports wood floor system with a three-layer keel damping structure, and each point is detected for at least 3 times;
the test results are given in the following table, table 1:
TABLE 1
According to the test results, the arithmetic mean value of the impact absorption rate obtained by all the test point positions is greater than 53% of the national standard, the full-field arithmetic mean value is 65.58%, and the data variance is only 0.843, so that the three-layer keel structure for the sports wood floor disclosed by the utility model has better impact absorption performance.
Example 2:
according to the three-layer keel structure for the sports wood floor, which is researched by the utility model, the ball rebound rate of the sports wood floor system is detected. The specific test contents are as follows:
1. the test principle is as follows: measuring the rebound height of a basketball on a 3 x 3m sports wood floor system with a three-layer keel shock absorption structure and a solid ground respectively by using a standard basketball, and calculating the rebound rate of the basketball; the ball rebound rate is calculated according to the following formula (2):
in the formula:
Br-rebound rate of the ball%
h-the rebound height of the ball on the detection surface, in millimeters (mm);
h1-ball rebound height on solid ground in millimeters (mm);
detecting the ball rebound rate of a 3 x 3m sports wood floor system with a three-layer keel shock absorption structure by adopting a frame with a scale and a height of 2.2m and a standardized basketball;
the test key points are as follows: 1. lifting the basketball to a position with the distance between the lower edge of the basketball and the ground being 1.8 m; 2. the standard basketball inflation amount is 1300mm based on the rebound height on the solid concrete ground; 3. measuring the rebound height of the ball, namely the distance between the upper edge of the basketball and the ground, on the solid concrete ground and the detection surface respectively, and accurately measuring the rebound height to 5 mm; 4. in the testing process, 5 test points are selected on the surface of a 3 x 3m sports wood floor system with a three-layer keel damping structure, and each point is detected for at least 3 times;
the test results are given in the following table, table 2:
TABLE 2
According to the test results, the arithmetic mean value of the impact absorption rate obtained by all the test point positions is greater than 90% of the national standard, the full-field arithmetic mean value is 97.14%, and the data variance is only 0.355, so that the three-layer keel structure for the sports wood floor disclosed by the utility model has better ball rebound performance.
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 utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. The utility model provides a three-layer keel structure for motion timber apron which characterized in that: the movable floor comprises a movable panel layer (1), a bearing plate layer (2), a primary double-layer combined keel (3), a secondary keel (4), an elastic gasket (5) for connecting a main structure part, a leveling cushion block (6) for leveling the structure and a bottom layer elastic shock pad (7); the lower end face of the moving panel layer (1) is provided with a bearing plate layer (2), and the moving panel layer (1) and the bearing plate layer (2) are connected into a whole to form the uppermost layer part of the moving wood floor; two sides of the lower end face of the bearing plate layer (2) are connected with a first-level double-layer combined keel (3), and the first-level double-layer combined keel (3) comprises a first-level keel and a second-level keel; the lower end face of the bearing plate layer (2) is connected with a first layer of keel, the edge of the lower end of the first layer of keel is provided with an elastic gasket (5), and the elastic gasket (5) is connected with a second layer of keel; the edge of the lower end of the second layer of keel is also provided with an elastic gasket (5) and is connected with the second layer of keel (4) through the elastic gasket (5); leveling cushion blocks (6) are arranged on two sides of the bottom end of the second-level keel (4), a bottom layer elastic damping pad (7) is arranged below the leveling cushion blocks (6), and the bottom layer elastic damping pad (7) is located at the bottommost layer of the moving wood floor structure.
2. The three-layer keel structure for sports wood flooring according to claim 1, wherein: the sport panel layer (1) is vertically stacked with the one-level double-layer combined keel (3) after being connected with the bearing panel layer (2) through the glue nails, and the bearing panel layer (2) is connected with the one-level double-layer combined keel (3) through the glue nails.
3. The three-layer keel structure for sports wood flooring according to claim 1, wherein: elastic pad (5) set gradually between first layer fossil fragments and second floor fossil fragments through the rifle nail to and between second floor fossil fragments and second grade fossil fragments (4), first layer fossil fragments, elastic pad (5), second floor fossil fragments, elastic pad (5) and second grade fossil fragments (4) stack fixed connection for a whole from last to down parallel in proper order.
4. The three-layer keel structure for sports wood flooring according to claim 1, wherein: the leveling cushion block (6) is arranged at a fixed position below the double-layer combined keel (3) and is connected into a whole through a gun nail.
5. The three-layer keel structure for sports wood flooring according to claim 1, wherein: the elastic shock absorption pads (7) and the side ends of the leveling cushion blocks (6) are arranged in a one-to-one correspondence mode and are connected into a whole through the gun nails.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121489030.5U CN215670784U (en) | 2021-06-30 | 2021-06-30 | Three-layer keel structure for sports wood floor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121489030.5U CN215670784U (en) | 2021-06-30 | 2021-06-30 | Three-layer keel structure for sports wood floor |
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| Publication Number | Publication Date |
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| CN215670784U true CN215670784U (en) | 2022-01-28 |
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| CN202121489030.5U Active CN215670784U (en) | 2021-06-30 | 2021-06-30 | Three-layer keel structure for sports wood floor |
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- 2021-06-30 CN CN202121489030.5U patent/CN215670784U/en active Active
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