Water flow indicator blade bending test device
By designing a water flow indicator blade bending test device including a test bench, a holder seat, a V-shaped swing frame and a rotating shaft, the problem of lack of specialized devices in the prior art for blade bending tests is solved, and effective testing of blade bending fatigue is achieved, and efficient and convenient characteristics are achieved.
Patent Information
- Application Number
- CN202421072011.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-16
- Publication Date
- 2025-03-25
- Estimated Expiration
- 2034-05-16
AI Technical Summary
The prior art lacks specialized devices for bending tests of water flow indicator blades, resulting in the inability to effectively test the bending fatigue of the blades.
A water flow indicator blade bending test device is designed, including a test bench, a holder, a V-shaped swing frame and a rotating shaft. The V-shaped swing frame is driven to swing back and forth through the rotating shaft, and the blades are bent forward and reverse along the central axis.
The bending fatigue test of the water flow indicator blade is realized, and it has the characteristics of simple structure, low production cost, convenient use and high inspection efficiency. It is suitable for blades of various specifications.
Smart Images
Figure CN222671607U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of fire-fighting equipment detection, and more specifically, to a bending test device for the vane of a water flow indicator. Background Art
[0002] The water flow indicator belongs to the sight glass type instrument valve, which is mainly used for observing the turbidity of the fluid medium and measuring the reaction of the medium flow velocity, etc., and is widely used in the production management of various industries. Among them, the saddle type water flow indicator can be installed on the main water supply pipe or the crossbar water pipe to give an electric signal of the water flow in a small area of a certain sub-region, so it is widely used in the automatic sprinkler fire extinguishing system.
[0003] After the saddle type water flow indicator is put into use, its vane is impacted by water flow for a long time and frequently, resulting in bending deformation. The service life of the vane will determine the life of the water flow indicator. Therefore, the bending test of the vane is a very important step, and specific test standards have been proposed for the vane bending test in the industry. It usually needs to meet the requirements of bending the test sample vane in the positive and negative directions along the central axis, with the bending surface forming an angle of 60° with the vane base surface each time of the test, the test frequency not exceeding 30 times / min, and a total of 1000 cycle tests are carried out. After the test, observe and record the situation of the vane. The vane must meet the requirements of no fracture, no permanent deformation and other damages after the test. However, at present, there is no device for such tests on the market. Content of the Utility Model
[0004] The purpose of the utility model is to provide a bending test device for the vane of a water flow indicator to solve the above problems.
[0005] The utility model adopts the following technical scheme:
[0006] A bending test device for the vane of a water flow indicator includes a test bench, on which there are a clamping seat for clamping the vane of the water flow indicator, a V-shaped swing frame, and a rotating shaft for driving the V-shaped swing frame to swing. The clamping seat is located on one side of the V-shaped opening direction of the V-shaped swing frame, and the vane of the water flow indicator on the clamping seat extends into the V-shaped opening of the V-shaped swing frame.
[0007] Furthermore, the V-shaped swing frame is formed by welding two rectangular frames or U-shaped frames into a V-shaped frame structure, and the V-shaped swing frame is welded or detachably fixed to the rotating shaft.
[0008] Furthermore, the V-shaped swing frame includes a first swing frame and a second swing frame. The first swing frame is hinged to the rotating shaft, and the second swing frame is fixedly welded or hinged to the rotating shaft, forming a V-shaped swing frame with an adjustable V-shaped opening amplitude.
[0009] Preferably, the V-shaped swing frame is also provided with a locking piece for locking the first swing frame or for locking the first swing frame and the second swing frame.
[0010] Furthermore, the test bench is provided with two swing limit seats, which are respectively located on both sides of the swing direction of the V-shaped swing frame. At least one of the two swing limit seats is provided with a counter, and the pressing end of the counter faces the V-shaped swing frame.
[0011] Preferably, the table top of the test bench is made of iron, a magnet is embedded on the swing limit seat, and the swing limit seat is fixed to the test bench by magnetic attraction.
[0012] Furthermore, the test bench is provided with a movable groove facing the direction of the V-shaped swing frame, and the clamping seat is movably locked on the movable groove by a plurality of locking pieces.
[0013] Furthermore, the clamping seat includes a base, a support plate and a pressing plate, the support plate is vertically fixed and welded to the base, the pressing plate is locked to the support plate by a plurality of locking pieces, and the water flow indicator blade is clamped between the support plate and the pressing plate.
[0014] Preferably, the support plate and the pressing plate are provided with rubber pads on one side facing the water flow indicator blade.
[0015] Preferably, a protractor is provided on the base, and the protractor is located below the water flow indicator blade.
[0016] From the above description of the structure of the utility model, it can be seen that compared with the prior art, the utility model has the following advantages:
[0017] 1. The utility model fixes the water flow indicator blade by a clamping seat, and drives the V-shaped swing frame to swing back and forth through a rotating shaft, thereby driving the water flow indicator blade to bend in positive and negative directions along the central axis to meet the bending fatigue test of the blade. It has the characteristics of simple structure, low manufacturing cost, convenient use, high inspection efficiency, etc.
[0018] 2. The table top of the test bench of the utility model can be an iron table top, and a magnet is embedded in the swing limit seat, and the swing limit seat is fixed to the test bench by magnetic attraction, thereby realizing arbitrary limit and adjustment of the swing amplitude of the V-shaped swing frame, and the adjustment is more convenient and flexible.
[0019] 3. The V-shaped swing frame of the utility model can be composed of a swing frame with a hinged structure, which makes it more convenient to adjust the opening amplitude of the V-shaped swing frame, reduces the debugging cost, and also meets more test conditions and parameters.
[0020] 4. The utility model is provided with a moving groove on the test bench facing the V-shaped swing frame. The clamping seat is movably locked on the moving groove through a plurality of locking members. By adjusting the distance between the clamping seat and the V-shaped swing frame, more water flow indicator blades of different specifications can be accommodated, making the device have a wider application range and better compatibility. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 It is a schematic structural diagram of the first embodiment of the utility model.
[0022] Figure 2 It is an exploded view of the clamping seat of the first embodiment of the utility model.
[0023] Figure 3 It is a front view of the V-shaped swing frame of the second embodiment of the utility model.
[0024] Among them, the reference numerals in the figure are: test bench 10, moving groove 11, clamping seat 20, base 21, support plate 22, pressing plate 23, protractor 24, rubber pad 25, V-shaped swing frame 30, first swing frame 31, second swing frame 32, rotating shaft 40, swing limit seat 50, counter 51, magnet 52, locking member 60, water flow indicator blade 70. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0025] The following describes the specific implementation manners of the embodiments of the utility model with reference to the drawings.
[0026] Embodiment 1
[0027] Referring to Figure 1 and Figure 2 , a water flow indicator blade bending test device includes a test bench 10, and the test bench 10 is provided with a clamping seat 20 for clamping the water flow indicator blade 70, a V-shaped swing frame 30, and a rotating shaft 40 for driving the V-shaped swing frame 30 to swing. The clamping seat 20 is located on one side of the V-shaped opening direction of the V-shaped swing frame 30, and the water flow indicator blade 70 on the clamping seat 20 extends into the V-shaped opening of the V-shaped swing frame 30. The rotating shaft 40 penetrates through the test bench 10, and a motor (not shown in the figure) for driving the rotating shaft 40 to rotate is provided below the test bench 10.
[0028] Referring to Figure 1 and Figure 2 , more specifically, in this embodiment, the V-shaped swing frame 30 is formed by welding two rectangular frames or U-shaped frames into a V-shaped frame structure, and the V-shaped swing frame 30 can be welded or detachably fixedly connected to the rotating shaft 40. In this embodiment, welding is preferably used, but it is not limited to the welding method. It can also be detachably connected by means of locking members 60 and the like. By the detachable connection method, V-shaped swing frames 30 with different opening amplitudes can be selected according to needs, thereby providing more test conditions and parameters.
[0029] Reference Figure 1 and Figure 2 Two swing limit seats 50 are provided on the test bench 10, and the swing limit seats 50 are respectively located on both sides of the swing direction of the V-shaped swing frame 30. At least one of the two swing limit seats 50 is provided with a counter 51, and the pressing end of the counter 51 faces the V-shaped swing frame 30, and when the V-shaped swing frame 30 swings to the swing limit seat 50, the V-shaped swing frame 30 can be in contact with the pressing end of the counter 51. While being limited and supported by the swing limit seat 50 and the counter 51, the counter 51 is pressed to complete a swing count.
[0030] Reference Figure 1 and Figure 2 In this embodiment, the table top of the test bench 10 can be an iron table top, and a magnet 52 is embedded on the swing limit seat 50, preferably a strong magnet 52, and the swing limit seat 50 is fixed on the test bench 10 by magnetic attraction, thereby realizing arbitrary limit and adjustment of the swing amplitude of the V-shaped swing frame 30, and the adjustment is more convenient and flexible. In addition, the fixing method of the swing limit seat 50 of the utility model is not limited to the adsorption of the magnet 52, and can also be locked by bolt locking members 60 and other methods.
[0031] Reference Figure 1 and Figure 2 In order to make the device applicable to water flow indicator blades 70 of more sizes, the device is provided with a moving groove 11 facing the V-shaped swing frame 30 on the test bench 10, and the clamping seat 20 is movably locked on the moving groove 11 by a plurality of locking pieces 60. Therefore, by adjusting the distance between the clamping seat 20 and the V-shaped swing frame 30, more water flow indicator blades 70 of different specifications can be applied.
[0032] Furthermore, the clamping seat 20 of the utility model includes a base 21, a support plate 22 and a pressing plate 23. The support plate 22 is vertically fixed and welded on the base 21. The pressing plate 23 is locked on the support plate 22 by a plurality of locking pieces 60. The water flow indicator blade 70 is clamped between the support plate 22 and the pressing plate 23. A rubber pad 25 is provided on the side of the support plate 22 and the pressing plate 23 facing the water flow indicator blade 70. The rubber pad 25 can reduce the damage caused by the rigid clamping of the water flow indicator blade 70, thereby reducing the influence of other factors on the test accuracy. A protractor 24 is also provided on the base 21. The protractor 24 is located below the water flow indicator blade 70. During the debugging stage of the device, the protractor 24 can be used to observe the swing and bending amplitude of the water flow indicator blade 70, thereby adjusting the position of each component of the device and the setting of the motor rotation angle.
[0033] Reference Figure 1 and Figure 2When the device is used, first clamp the central axis position of the water flow indicator blade 70 on the clamping seat 20, and adjust the distance between the clamping seat 20 and the V-shaped swing frame 30 according to the size specifications of the water flow indicator blade 70 to ensure that the water flow indicator blade 70 can be driven by the V-shaped swing frame 30 to bend to the required angle. Subsequently, the swing amplitude of the water flow indicator blade 70 is adjusted based on the protractor 24, the position of the swing limit seat 50 is adjusted, and the rotation amplitude of the motor is set, thereby completing the device adjustment before the test to meet the test parameters. During the test, the output shaft of the motor of the device repeatedly completes a certain rotation angle of forward and reverse rotation, thereby driving the V-shaped swing frame 30 to swing back and forth, thereby driving the water flow indicator blade 70 to bend in forward and reverse directions along the central axis, and the number of bends is calculated by the counter 51 to meet the test requirements.
[0034] Embodiment 2
[0035] Reference Figure 3 The structure of this embodiment is basically the same as that of the first embodiment, and will not be described in detail here. The difference is that the V-shaped swing frame 30 includes a first swing frame 31 and a second swing frame 32, wherein the first swing frame 31 is hinged to the rotating shaft 40, and the second swing frame 32 is fixedly welded or hinged to the rotating shaft 40, and forms a V-shaped swing frame 30 with adjustable V-shaped opening amplitude. The V-shaped swing frame 30 is also provided with a locking piece 60 for locking the first swing frame 31 or for locking the first swing frame 31 and the second swing frame 32.
[0036] In this embodiment, the first swing frame 31 is preferably hinged on the rotating shaft 40 and locked by a locking member 60 such as a bolt, and the second swing frame 32 is fixedly welded on the rotating shaft 40. In this embodiment, the V-shaped swing frame 30 can more conveniently adjust the opening amplitude of the V-shaped swing frame 30, with lower debugging costs, and meet more test conditions and parameters.
[0037] The above is only a specific implementation method of the utility model, but the design concept of the utility model is not limited to this. Any non-substantial changes to the utility model using this concept shall be deemed as an infringement of the protection scope of the utility model.
Claims
1. A water flow indicator blade bending test device, characterized in that: It includes a test bench, on which there are a clamping seat for clamping the vane of a water flow indicator, a V-shaped swing frame, and a rotating shaft for driving the V-shaped swing frame to swing. The clamping seat is located on one side of the V-shaped opening direction of the V-shaped swing frame, and the vane of the water flow indicator on the clamping seat extends into the V-shaped opening of the V-shaped swing frame.
2. A water flow indicator blade bending test device according to claim 1, characterized in that: The V-shaped swing frame is formed by welding two rectangular frames or U-shaped frames into a V-shaped frame structure, and the V-shaped swing frame is welded or detachably fixedly connected to the rotating shaft.
3. A water flow indicator blade bending test device according to claim 1, characterized in that: The V-shaped swing frame includes a first swing frame and a second swing frame. The first swing frame is hinged to the rotating shaft, and the second swing frame is fixedly welded or hinged to the rotating shaft to form a V-shaped swing frame with an adjustable V-shaped opening amplitude.
4. A water flow indicator blade bending test device according to claim 3, characterized in that: The V-shaped swing frame is also provided with a locking member for locking the first swing frame or for locking the first swing frame and the second swing frame.
5. The water flow indicator blade bending test device according to claim 1, characterized in that: There are two swing limit seats on the test bench, which are respectively located on both sides of the swinging direction of the V-shaped swing frame. At least one of the two swing limit seats is provided with a counter, and the pressing end of the counter faces the V-shaped swing frame.
6. A water flow indicator blade bending test device according to claim 5, characterized in that: The tabletop of the test bench is made of iron, and magnets are embedded in the swing limit seats. The swing limit seats are magnetically fixed on the test bench.
7. A water flow indicator blade bending test device according to claim 1, characterized in that: There is a moving groove on the test bench facing the direction of the V-shaped swing frame, and the clamping seat is movably locked on the moving groove through a plurality of locking members.
8. The water flow indicator blade bending test device according to claim 1, characterized in that: The clamping seat includes a base, a support plate, and a pressing plate. The support plate is vertically and fixedly welded to the base, the pressing plate is locked to the support plate through a plurality of locking members, and the vane of the water flow indicator is clamped between the support plate and the pressing plate.
9. A water flow indicator blade bending test device according to claim 8, characterized in that: Rubber pads are provided on the surfaces of the support plate and the pressing plate facing the vane of the water flow indicator.
10. A water flow indicator blade bending test device according to claim 8, characterized in that: A protractor is provided on the base, and the protractor is located below the vane of the water flow indicator.