A device for measuring the stretch of a hose
By using an inclined plate and anti-slip structure in the hose elongation measuring device to resist the impact of water flow, the problem of lateral deformation of the hose affecting the measurement accuracy was solved, and higher precision measurement results were achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIUAN TESTING & CERTIFICATION CO LTD
- Filing Date
- 2025-06-23
- Publication Date
- 2026-07-21
AI Technical Summary
Existing water hoses are prone to lateral deformation after being filled with water, resulting in a lower measured longitudinal deformation and affecting the accuracy of the elongation rate measurement.
A hose elongation measuring device was designed, which uses an inclined plate and anti-slip structure to resist the impact of water flow and ensure that the hose remains straight during measurement. The device includes an inclined plate and silicone pads to prevent lateral deformation, and a clamping device to achieve automated fixation.
This improved the accuracy of hose expansion rate measurement, ensuring that the measurement data was not affected by lateral movement, and achieved higher measurement precision.
Smart Images
Figure CN224535647U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of testing equipment technology, specifically to a device for measuring the elongation of a water hose. Background Technology
[0002] A fire hose elongation measuring device is a testing device specifically designed to accurately measure the changes in length and diameter (i.e., elongation) of a fire hose under internal water pressure. It typically includes a tray, a fixed end at one end of the tray, and a movable end at the other end of the tray. The movable end can displace under thrust. One end of the fire hose is attached to the fixed end of the elongation measuring device, and the other end is attached to the movable end. The fire hose is supported by the tray. After water is poured into the fire hose, the amount of elongation is obtained by observing the distance the movable end moves, thus determining the elongation rate of the fire hose.
[0003] Although the existing technologies mentioned above can solve the corresponding technical problems, they still have certain defects: after the existing fire hoses are filled with water, the fire hoses will undergo certain lateral and longitudinal deformations due to the pressure of the water flow inside. After the fire hoses undergo lateral deformation, the middle section of the fire hoses is easily bent on the tray of the fire hose elongation measuring device, which in turn makes the measured longitudinal deformation amount lower and affects the accuracy of the measured elongation rate. Utility Model Content
[0004] The purpose of this invention is to address the shortcomings and deficiencies of existing technologies by providing a fire hose elongation measuring device that is highly accurate and prevents fire hoses from deforming laterally.
[0005] To achieve the above objectives, the present invention adopts the following technical solution: a hose elongation measuring device, comprising a base and a hose tray fixedly installed on the base, a slide rail installed on the other end of the base, a slider slidably mounted on the slide rail, a movable tray fixedly mounted on the slider that can fit against the hose tray, the hose tray comprising a support plate and a through groove integrally formed in the middle section of the support plate extending linearly from one end of the support plate to the other end, and two symmetrically distributed inclined plates welded on the lower surface of the support plate at the corresponding positions of the through groove.
[0006] A further improvement is that a first clamping device is fixedly installed at one end of the base on the corresponding position of the side wall of one end of the hose tray.
[0007] A further improvement is that a second clamping device is provided on the slider at the corresponding position on one side of the moving tray.
[0008] A further improvement is that an anti-detachment guardrail is welded to the top surface of the pallet.
[0009] A further improvement is that a lower plate is welded between the bottom ends of the two inclined plates.
[0010] A further improvement is that an anti-slip structure is embedded on the surface of the inclined plate.
[0011] A further improvement is that the anti-slip structure includes a silicone pad.
[0012] A further improvement is that the surface of the silicone pad is integrally formed with several arc-shaped grooves.
[0013] After adopting the above technical solution, the beneficial effects of this utility model are as follows: When measuring the elongation rate of fire hoses, the fire hose is placed on the hose tray and falls through the penetration groove between the two inclined plates of the hose tray. The other end of the hose is fixed to the movable tray. Both the penetration groove and the inclined plates extend vertically along the surface of the tray. Then, water is injected into the fire hose to make it expand. When the fire hose undergoes lateral bending deformation, the inclined plates can resist the lateral force generated by the water flow impact on the fire hose. Thus, the fire hose is kept straight by the two inclined plates when water is injected. This ensures that the measured elongation of the fire hose is not affected by the lateral movement of the fire hose, making the measurement data more accurate. Attached Figure Description
[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0015] Figure 1 This is a top view of the structure of the elongation measuring device of this utility model;
[0016] Figure 2 This is a structural schematic diagram of the front cross-section of the water hose tray of this utility model;
[0017] Figure 3 This is a schematic diagram of the front view of the anti-slip structure of this utility model. Detailed Implementation
[0018] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments.
[0019] See Figure 1-3As shown, the technical solution adopted in this specific embodiment is: a hose elongation measuring device, including a base 1 and a hose tray 2 fixedly installed on the base 1. A slide rail 5 is installed on the other end of the base 1, and a slider 6 is slidably provided on the slide rail 5. A movable tray 4 that can fit against the hose tray 2 is fixedly installed on the slider 6. The hose tray 2 includes a support plate 21 and a through groove integrally formed in the middle section of the support plate 21, extending linearly from one end of the support plate 21 to the other end. Two symmetrically distributed inclined plates 22 are welded on the lower surface of the support plate 21 at the corresponding positions of the through groove. The width of the through groove is... The hose can be selected in four standard diameters: 50, 65, 80 or 75, 90 mm. The lower end of the inclined plate 22 is flush with the upper surface of the moving tray 4. The inclination angle of the inclined plate 22 can be between 30° and 45°. Made of stainless steel, it offers good pressure resistance. In use, place the hose on the hose tray 2, record the initial position of the slider 6, place one end of the hose on one end of the hose tray 2 and fix it, and place the other end of the hose on the moving tray 4 and fix it. Then, move the hose from the fixed hose tray... Low-pressure water is introduced into the end of the hose on tray 2 to expel air from the hose. Then, the end of the hose on the moving tray 4 is connected to the outlet pipe, and high-pressure water is injected into the hose. Continuous water injection causes the hose to extend, which in turn pushes the moving tray 4. This, in turn, causes the slider 6 to move synchronously on the slide rail 5, thus obtaining the hose extension amount. When measuring the fire hose elongation rate, the fire hose is placed on the hose tray 2 and allowed to fall through the penetration groove into the tray plate of the hose tray 2. Between the two inclined plates 22 below 21, the through groove and the inclined plates 22 extend vertically along the surface of the support plate 21. When water is injected into the fire hose to make it expand, the fire hose is completely pressed against the inclined plates 22. When the fire hose undergoes lateral bending deformation, the inclined plates 22 can resist the lateral force generated by the water flow impact on the fire hose. Thus, the fire hose is restricted by the two inclined plates 22 and keeps it straight when water is injected. This ensures that the measured extension of the fire hose is not affected by the lateral movement of the fire hose, making the measurement data more accurate.
[0020] A first clamping device 3 is fixedly installed at one end of the base 1 at the corresponding position on the side wall of one end of the hose tray 2. The first clamping device 3 consists of two relatively distributed cylinders and clamping blocks installed at the ends of the cylinders. All of these are existing technologies. The first clamping device 3 is advantageous for automatically fixing the hose after it is loaded onto the hose tray 2, resulting in a higher degree of automation and a more secure fixation.
[0021] A second clamping device 7 is provided on the slider 6 at the corresponding position on one side of the movable tray 4. The second clamping device 7 consists of two relatively distributed cylinders and clamping blocks installed at the ends of the cylinders. Both are existing technologies. The second clamping device 7 is advantageous for automatically fixing the water hose after it is loaded onto the movable tray 4, resulting in a higher degree of automation and a more secure fixation.
[0022] The top surface of the support plate 21 is also welded with an anti-detachment guardrail 24. The anti-detachment guardrail 24 is installed on the edge of the penetration groove, which helps to limit the water hose after it expands, prevent the water hose from moving upward and detaching from the penetration groove, and make the positioning of the water hose by the penetration groove and the inclined plate 22 more stable.
[0023] A lower plate 23 is welded between the bottom ends of the two inclined plates 22, which helps to close the lower ends of the two inclined plates 22 and prevents the water hose from falling directly from the bottom of the two inclined plates 22 due to its small diameter.
[0024] An anti-slip structure 25 is embedded on the surface of the inclined plate 22. The anti-slip structure 25 includes a silicone pad 251. The silicone pad 251 has a thickness of 5mm-10mm and is made of medium-hardness silicone (hardness between 20 and 40 degrees). This helps to prevent the water hose from sliding inside the inclined plate 22 through the surface friction of the silicone pad 251, thereby further improving the measurement accuracy.
[0025] The silicone pad 251 has several arc-shaped grooves 252 integrally formed on its surface, which helps to further increase the friction between the water hose and the silicone pad 251, prevent the water hose from slipping, and further improve the measurement accuracy.
[0026] The working principle of this invention is as follows: When using this invention, a water hose is placed on the water hose tray 2, and the initial position of the slider 6 is recorded. One end of the water hose is placed on and fixed to one end of the water hose tray 2, while the other end is placed on and fixed to the movable tray 4. Then, low-pressure water is introduced from the end of the water hose fixed to the water hose tray 2 to expel air from the hose. Next, the end of the water hose on the movable tray 4 is connected to the outlet water pipe, and high-pressure water is injected into the hose. As water is continuously injected, the water hose extends, pushing against the movable tray 4. This, in turn, causes the slider 6 to move synchronously on the slide rail 5, thus obtaining the water hose. In measuring the elongation of a fire hose, the fire hose is placed on the hose tray 2 and falls through a penetration groove between two inclined plates 22 below the support plate 21 of the hose tray 2. Both the penetration groove and the inclined plates 22 extend vertically along the surface of the support plate 21. When water is injected into the fire hose to make it expand, the inclined plates 22 can resist the lateral force generated by the water flow impact on the fire hose when the fire hose undergoes lateral bending deformation. This allows the fire hose to remain straight during water injection because it is restricted by the two inclined plates 22. As a result, the measured elongation of the fire hose is not affected by the lateral movement of the fire hose, making the measurement data more accurate.
[0027] This utility model aims to protect the structure of the product. The model numbers of the components are not the focus of this utility model's protection, as they are common technology. Any component on the market that can achieve the functions described above can be used as an option. Therefore, the model numbers and other parameters of the components are not described in detail in this utility model. The contribution of this utility model lies in the scientific combination of the various components.
[0028] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions provided are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection of this utility model as defined by the appended claims and their equivalents. Any aspects of this utility model not detailed herein are well-known to those skilled in the art.
Claims
1. A hose elongation measuring device, comprising a base (1) and a hose tray (2) fixedly mounted on the base (1), wherein a slide rail (5) is mounted on the other end of the base (1), a slider (6) is slidably mounted on the slide rail (5), and a movable tray (4) that can fit against the hose tray (2) is fixedly mounted on the slider (6), characterized in that: The water hose tray (2) includes a tray (21) and a through groove integrally formed in the middle section of the tray (21) extending straight from one end of the tray (21) to the other end. Two symmetrically distributed inclined plates (22) are welded on the lower surface of the tray (21) at the corresponding position of the through groove.
2. The hose expansion rate measuring device according to claim 1, characterized in that: The base (1) is fixedly installed with a first clamping device (3) at one end of the corresponding position on the side wall of the water hose tray (2).
3. The hose expansion rate measuring device according to claim 1, characterized in that: The slider (6) is provided with a second clamping device (7) at the corresponding position on one side of the movable tray (4).
4. The hose expansion rate measuring device according to claim 1, characterized in that: The top surface of the pallet (21) is also welded with an anti-detachment guardrail (24).
5. The hose expansion rate measuring device according to claim 1, characterized in that: A lower plate (23) is welded between the bottom ends of the two inclined plates (22).
6. The hose expansion rate measuring device according to claim 1, characterized in that: An anti-slip structure (25) is embedded on the surface of the inclined plate (22).
7. The hose expansion rate measuring device according to claim 6, characterized in that: The anti-slip structure (25) includes a silicone pad (251).
8. The hose expansion rate measuring device according to claim 7, characterized in that: The surface of the silicone pad (251) is integrally formed with several arc-shaped grooves (252).