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Preparation method of novel special sandbags for practicing Sanda

A sandbag, a new type of technology, applied in the field of sports training equipment, can solve the problems of sandbags being easily broken, broken at the suspension, short service life, etc., and achieves the effects of light weight, good resilience and hand feeling

Active Publication Date: 2018-07-27
SHENYANG SPORT UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These types of sandbags have the following disadvantages. Since the inner bag is filled with sand, bran or rubber blocks and other granular materials, the outer bag is directly hung with ropes, and the outer bag bears the weight of the entire sandbag, which can easily cause the suspension to break, and the sandbag is easily broken , short service life
In addition, sandbags are very inconvenient because they are too heavy during transportation or installation.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A kind of preparation method of the novel special-purpose sandbag that is used for practicing Sanda, comprises the following steps:

[0025] (1) Preparation of sandbag bag body:

[0026] The stainless steel strips are bent and intersected with each other to form a hollow cylindrical bag body. The stainless steel strips are made of 304 material. The upper and lower ends of the bag body are integrally bent and formed. Connect a suspension piece, the suspension piece is connected to the main body of the bag body with a detachable snap ring; choose a suitable leather material and cut it into a shape that matches the main body of the bag body, with openings at the upper and lower ends as the outer shell of the sandbag ;The upper end of the shell is sealed with the suspension by a seal; the lower end of the shell is sealed by a sealing clip; the shell is sleeved outside the main body of the bag, and the shell and the sandbag are filled with polyurethane PU foam sponge The ga...

Embodiment 2

[0034] A kind of preparation method of the novel special-purpose sandbag that is used for practicing Sanda, comprises the following steps:

[0035] (1) Preparation of sandbag bag body:

[0036] The stainless steel strips are bent and intersected with each other to form a hollow cylindrical bag body. The stainless steel strips are made of 304L material. The upper and lower ends of the bag body are integrally bent and formed. Connect a suspension piece, the suspension piece is connected to the main body of the bag body with a detachable snap ring; choose a suitable leather material and cut it into a shape that matches the main body of the bag body, with openings at the upper and lower ends as the outer shell of the sandbag ;The upper end of the shell is sealed with the suspension by a seal; the lower end of the shell is sealed by a sealing clip; the shell is sleeved outside the main body of the bag, and the shell and the sandbag are filled with polyurethane PU foam sponge The g...

Embodiment 3

[0044] A kind of preparation method of the novel special-purpose sandbag that is used for practicing Sanda, comprises the following steps:

[0045] (1) Preparation of sandbag bag body:

[0046] The stainless steel strips are bent and intersected with each other to form a hollow cylindrical bag body. The stainless steel strips are made of 304 material. The upper and lower ends of the bag body are integrally bent and formed. Connect a suspension piece, the suspension piece is connected to the main body of the bag body with a detachable snap ring; choose a suitable leather material and cut it into a shape that matches the main body of the bag body, with openings at the upper and lower ends as the outer shell of the sandbag ;The upper end of the shell is sealed with the suspension by a seal; the lower end of the shell is sealed by a sealing clip; the shell is sleeved outside the main body of the bag, and the shell and the sandbag are filled with polyurethane PU foam sponge The gap ...

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Abstract

The invention relates to the field of physical training equipment and especially relates to a preparation method of novel special sandbags for practicing Sanda. The preparation method comprises following steps: (1) steel bars are bent and then cross-woven into a hollow cylindrical bag body, and cortical shell layer is used to sleeve on the outside of the bag body, and the gap between the shell layer and the sandbag body is filled with a polyurethane PU foam sponge; (2) water retaining material is inserted into the interior from the bottom of the bag body, so that the water retaining material is evenly distributed inside the bag body. The sandbag prepared by the method of the invention is very light in weight and easy to install. Before use, water is injected into the sandbag, the weight ofthe sandbag is selected freely, and then the polyurethane PU foam sponge is used as the sponge. It has good resilience and feel, and is more suitable for sandbags used to practice Sanda.

Description

technical field [0001] The invention relates to the field of sports training equipment, in particular to a method for preparing a new type of special sandbag for Sanda practice. Background technique [0002] As we all know, sandbags are a kind of physical exercise training equipment, which are widely used in sports activities such as boxing and Sanda; most of the sandbags commonly used for Sanda training in China are sacks, leather bags and canvas bags, and the bags are directly filled with sand. ; The inner bag and the outer bag are separated by a layer of sponge, and the outer bag is directly hung on the support with a rope. These types of sandbags have the following disadvantages. Since the inner bag is filled with sand, bran or rubber blocks and other granular materials, the outer bag is directly hung with ropes, and the outer bag bears the weight of the entire sandbag, which can easily cause the suspension to break, and the sandbag is easily broken , short service life...

Claims

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Application Information

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IPC IPC(8): A63B69/20C08G18/48C08F289/00C08F220/06C08G101/00
CPCA63B69/004A63B69/20A63B2209/00A63B2244/10C08F289/00C08G18/48C08G2101/00C08F220/06
Inventor 张学政罗利勾庆华毛瑞秋白云峰苗忠华金中铉
Owner SHENYANG SPORT UNIV
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