Device for testing radial extrusion force of sealing gasket

Abstract

The utility model relates to the technical field of sealing gasket testing, and discloses a sealing gasket radial extrusion force testing device which specifically comprises a base, a supporting plate and a controller are arranged at the top of the base, a rotating disc is movably connected to the middle of the supporting plate, and mandrels are evenly arranged on the side, away from the supporting plate, of the rotating disc. Electric telescopic rods are fixed to the top end and the bottom end of one side of the supporting plate, electromagnets are fixedly connected to the tail ends of output shafts of the electric telescopic rods, and a conductive plate is fixed to the middle of one side of the supporting plate. According to the testing device for the radial extrusion force of the sealing gasket, through the arrangement of the mandrel, the mandrel can adapt to sealing gaskets of various sizes, so that when the testing device is used, the disassembly and assembly frequency of the semi-cylinder can be reduced, and the testing efficiency of the sealing gasket can be improved; through the arrangement of the turntable, the position of the mandrel can be rapidly changed, so that mandrels with different sizes or another mandrel with the same size can be moved to a detection position, and the use of the testing device is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of sealing gasket testing, in particular to a sealing gasket radial extrusion force testing device. Background Art

[0002] The inner diameter of the sealing gasket is generally smaller than the diameter of the shaft (there is a certain amount of interference). After being assembled on the shaft, radial contact force will be formed between the gasket and the shaft. The radial contact force is the key factor in achieving sealing performance. Therefore, the radial force of the sealing gasket needs to be measured during the production process. Currently, there are three main methods for measuring radial contact force: experimental testing, engineering calculation and numerical simulation. Among them, experimental measurement of the radial force of the sealing gasket is the most intuitive and reliable method.

[0003] In the prior art, the commonly used sealing gasket radial force testing device is a semi-axis radial testing instrument. When using this instrument, the sealing gasket is usually loaded onto two separated semi-cylinders of a given shaft diameter, and the tensioning force on the two semi-cylinders is measured, thereby indirectly obtaining the radial force of the sealing gasket. However, when testing sealing gaskets of different specifications, semi-cylinders with different outer diameters are required, which results in the need to frequently disassemble and assemble the semi-cylinders during actual use of the semi-axis radial testing instrument, which is more troublesome and affects the test efficiency. Based on this, the present application proposes a sealing gasket radial extrusion force testing device. Utility Model Content

[0004] The utility model provides a sealing gasket radial extrusion force testing device, which solves the problem proposed in the above background technology that when using a semi-axis radial tester to test sealing gaskets of different specifications, different semi-cylinders need to be replaced, and frequent disassembly and assembly of the semi-cylinders is troublesome, which affects the test efficiency.

[0005] The utility model provides the following technical solution: a sealing gasket radial extrusion force testing device, comprising a base, a support plate and a controller are arranged on the top of the base, a turntable is movably connected to the middle of the support plate, a core shaft is evenly arranged on the side of the turntable away from the support plate, an electric telescopic rod is fixed to the top and bottom of one side of the support plate, an electromagnet is fixed to the output shaft end of the electric telescopic rod, a conductive plate is fixed to the middle of one side of the support plate, and the conductive plate is in contact with the back of the turntable;

[0006] The core shaft includes two semi-cylinders, a support block is fixed at one end of the semi-cylinder, the support block is magnetically connected to the turntable, and the turntable is evenly provided with sliding grooves. A conductive rod is movably connected in the inner cavity of the sliding groove, and the conductive rod is fixedly connected to the support block; the semi-cylinder includes semi-cylindrical sections, and two adjacent semi-cylindrical sections are in a state of mutual clamping, and a thin film pressure sensor is fixedly connected to the outer surface of the semi-cylindrical section, and the thin film pressure sensor is electrically connected to the conductive rod, and the outer diameters of the two adjacent semi-cylindrical sections are different.

[0007] Preferably, a rotating shaft is fixedly connected to the middle of the back side of the turntable, the other end of the rotating shaft is movably connected to the support plate, a rotating motor is fixed to the back side of the support plate, and the output shaft end of the rotating motor is fixedly connected to the other end of the rotating shaft.

[0008] Preferably, the support block is made of ferromagnetic metal, and the outer surface of the support block is provided with a groove adapted to the electromagnet.

[0009] Preferably, a clamping groove is provided at one end of the semi-cylindrical section, and a clamping column is fixed at the other end of the semi-cylindrical section, and the clamping groove is adapted to the clamping column.

[0010] Preferably, the semi-cylinder is stepped, and the outer diameter of one end of the semi-cylinder away from the turntable is smaller than the outer diameter of the other end.

[0011] Preferably, insulating pads are fixed to one side of the turntable close to the conductive plate and to the outer surface of the support block.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] 1. The sealing gasket radial extrusion force testing device can adapt to sealing gaskets of various sizes through the setting of the core shaft, so that when the testing device is in use, the frequency of disassembly and assembly of the semi-cylinder can be reduced, thereby improving the efficiency of the sealing gasket test; through the setting of the turntable, the position of the core shaft can be quickly changed, so that core shafts of different sizes or another core shaft of the same size can be moved to the detection position, which is convenient for the use of the testing device.

[0014] 2. The sealing gasket radial extrusion force testing device, through the setting of the conductive block and the conductive rod, the film pressure sensor located at the detection position is in the power-on state, and the film pressure sensors located in other areas are in the power-off state, which can reduce the energy consumption of the device and avoid the influence of the detection result when accidentally touching the core shaft in the non-detection area, thereby improving the reliability of the device during use, and facilitating the user to disassemble and assemble the sealing gasket on the core shaft in the non-detection area during use of the device, thereby improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a front view of the structure of the utility model;

[0016] Figure 2 The utility model structure Figure 1 Back diagram;

[0017] Figure 3 The utility model structure Figure 1 Explosion diagram;

[0018] Figure 4The utility model structure Figure 3 Back diagram;

[0019] Figure 5 It is a schematic diagram of a semi-cylindrical section of the structure of the utility model.

[0020] In the figure: 1. base; 2. support plate; 3. controller; 4. turntable; 5. electric telescopic rod; 6. electromagnet; 7. core shaft; 8. rotating motor; 9. support block; 10. conductive plate; 13. slide groove; 14. conductive rod; 15. groove; 16. film pressure sensor; 17. semi-cylindrical section; 18. slot; 19. clamping column. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figures 1 to 5 The utility model provides a sealing gasket radial extrusion force testing device, including a base 1, a support plate 2 is provided on the top of the base 1, a rotating shaft is movably connected in the middle of the support plate 2, a rotating disk 4 is fixedly connected to one end of the rotating shaft, a rotating motor 8 is fixed on the side of the support plate 2 away from the rotating disk 4, and the output shaft end of the rotating motor 8 is fixedly connected to the rotating shaft through a reducer. Through the setting of the rotating motor 8, the rotation of the rotating motor 8 can drive the rotating shaft fixedly connected thereto to rotate, and the rotating shaft drives the rotating disk 4 fixedly connected thereto to rotate. The rotating motor 8 is a self-locking motor, and its model can be XWD11-9-I.

[0023] The turntable 4 is evenly provided with a mandrel 7 on one side away from the support plate 2. When the turntable 4 rotates, the position of the mandrel 7 on the turntable 4 can be exchanged. The mandrel 7 includes two semi-cylinders, one end of which is fixed with a support block 9, which is magnetically connected to the turntable 4, and the material of the support block 9 is ferromagnetic metal, which can be metal iron. A permanent magnet is fixed on one side of the turntable 4 away from the support plate 2. By setting the magnetic connection between the support block 9 and the turntable 4, the position of the mandrel 7 on the turntable 4 can be kept fixed, which is convenient for the use of the mandrel 7.

[0024] A conductive rod 14 is fixedly connected to one end of the support block 9 away from the semi-cylinder. The length of the conductive rod 14 is the same as the thickness of the turntable 4. The turntable 4 is evenly provided with slide grooves 13. The conductive rod 14 is movably connected to the inner cavity of the slide groove 13. Through the setting of the slide groove 13, under the action of external force, the support block 9 can move in the direction of the slide groove 13, thereby changing the distance between the two semi-cylinders in the core shaft 7.

[0025] Please continue reading Figures 1 to 5 , a conductive plate 10 is fixed on the side of the support plate 2 close to the turntable 4, and the conductive plate 10 is in contact with the turntable 4, and the conductive rod 14 can contact the conductive plate 10 under the rotation of the turntable 4. The top and bottom ends of the support plate 2 close to the turntable 4 are fixed with electric telescopic rods 5, and the end of the output shaft of the electric telescopic rod 5 is fixedly connected with an electromagnet 6. The conductive plate 10 is located between the two electric telescopic rods 5. The outer surface of the support block 9 is provided with a groove 15 adapted to the electromagnet 6. When the electromagnet 6 is aligned with the groove 15, under the action of the electric telescopic rod 5, the electromagnet 6 can be inserted into the inner cavity of the groove 15, and the electromagnet 6 is energized. The electromagnet 6 and the support block 9 are magnetically attracted. The electric telescopic rod 5 can drive the support block 9 to move through the electromagnet 6, so as to change the distance between the two semi-cylinders in the core shaft 7, and the conductive rod 14 of this core shaft 7 is in contact with the conductive plate 10. The position where the conductive plate 10 is located can be recorded as a test position. The model of the electromagnet 6 can be LS-P20 / 23S.

[0026] An insulating pad is fixed to one side of the turntable 4 close to the conductive plate 10, and the outer surface of the support block 9 is wrapped with an insulating pad to prevent the user from electric shock and improve the safety of the turntable 4 when in use. The insulating pad can be made of insulating rubber.

[0027] The above-mentioned semi-cylinder includes a semi-cylindrical section 17, two adjacent semi-cylindrical sections 17 are in a state of being mutually engaged, a slot 18 is provided at one end of the semi-cylindrical section 17, a post 19 is fixed at the other end of the semi-cylindrical section 17, the slot 18 is adapted to the post 19, and the arrangement of the slot 18 and the post 19 facilitates the replacement of the semi-cylindrical section 17. The outer diameters of the two adjacent semi-cylindrical sections 17 are different, the semi-cylindrical section is stepped, and the outer diameter of one end of the semi-cylindrical section away from the rotating disk 4 is smaller than the outer diameter of the other end. With such an arrangement, the user can test gaskets of various sizes using one mandrel 7, and when the sizes of the two adjacent mandrels 7 in the device are different, the device can adapt to gaskets of various sizes, greatly increasing the adaptability of the device; when the sizes of the mandrels 7 in the device are the same, the user can disassemble and assemble the gasket on the other mandrel 7 during the test of the radial extrusion force of the gasket, thereby improving the efficiency of the gasket test.

[0028] A thin film pressure sensor 16 is fixedly connected to the outer surface of the semi-cylindrical section 17, and the thin film pressure sensor 16 is electrically connected to the conductive rod 14. Through the setting of the thin film pressure sensor 16, the thin film pressure sensor 16 can be used to detect in real time the squeezing pressure of the sealing gasket on the semi-cylindrical section 17, and then indirectly measure the radial squeezing pressure of the sealing gasket.

[0029] It can be seen from the above description that the core shaft can adapt to sealing gaskets of various sizes, so that when using the device, the user does not need to frequently disassemble and assemble the semi-cylinder, thereby improving the efficiency of sealing gasket testing.

[0030] A controller 3 is also provided on the top of the base 1. The controller 3 can control the electrical components in the test device, and the data detected by the film pressure sensor 16 can be uploaded to the controller 3. The controller 3 can display the detection results of the film pressure sensor 16 on the display screen according to the received data, which is convenient for users to view.

[0031] The electrical components involved in this application are all prior art, and technicians in this field are familiar with their connection methods. Through these technicians, all the electrical components in this application are connected to their compatible power supplies through wires, and according to the actual situation, a suitable controller is selected to meet the control requirements. The specific connection and control sequence are described below. The electrical connection is completed in a sequential working order, and the detailed connection means are well known in the art. The following mainly introduces the working principle and process, and no further explanation of the electrical control is given.

[0032] In summary: when the sealing gasket radial extrusion force testing device is used, the user adjusts the position of the mandrel 7 according to the needs, so that the mandrel 7 adapted to the sealing gasket to be tested moves to the test position, and the user puts the sealing gasket to be tested on the semi-cylindrical section 17 adapted thereto. During the installation of the sealing gasket, the electric telescopic rod 5 drives the electromagnet 6 to move until the electromagnet 6 is inserted into the groove 15, and the electromagnet 6 is energized, and the electromagnet 6 is magnetically connected to the support block 9 in the energized state. After the sealing gasket is installed, the electric telescopic rod 5 contracts, and the electric telescopic rod 5 drives the support block 9 to move through the electromagnet 6, and the support block 9 drives the semi-cylinder fixedly connected thereto to move, and the sealing gasket is stretched. The thin film pressure sensor 16 in contact with the sealing gasket detects the extrusion force of the sealing gasket on the semi-cylindrical section 17 in real time, and then indirectly measures the radial extrusion force of the sealing gasket. The device is used to realize the test of the radial extrusion force of the sealing gasket.

[0033] The standard parts used in the utility model can be purchased from the market, and the special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part adopt the conventional means such as mature bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt the conventional models in the prior art and will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field. Although the embodiments of the utility model have been shown and described, it can be understood by ordinary technicians in this field that various changes, modifications, substitutions and modifications can be made to these embodiments without departing from the principle and spirit of the utility model. The scope of the utility model is defined by the attached claims and their equivalents.

Claims

1. A sealing gasket radial extrusion force testing device, comprising a base (1), characterized in that: A support plate (2) and a controller (3) are provided on the top of the base (1); a turntable (4) is movably connected to the middle of the support plate (2); a core shaft (7) is evenly provided on the side of the turntable (4) away from the support plate (2); an electric telescopic rod (5) is fixed to the top and bottom of one side of the support plate (2); an electromagnet (6) is fixed to the end of the output shaft of the electric telescopic rod (5); a conductive plate (10) is fixed to the middle of one side of the support plate (2); and the conductive plate (10) is in contact with the back side of the turntable (4); The core shaft (7) comprises two semi-cylinders, a support block (9) is fixed at one end of the semi-cylinder, the support block (9) is magnetically connected to the turntable (4), and the turntable (4) is evenly provided with slide grooves (13), and a conductive rod (14) is movably connected in the inner cavity of the slide groove (13), and the conductive rod (14) is fixedly connected to the support block (9); the semi-cylinder comprises a semi-cylindrical section (17), and two adjacent semi-cylindrical sections (17) are in a mutually clamped state, and a thin film pressure sensor (16) is fixedly connected to the outer surface of the semi-cylindrical section (17), and the thin film pressure sensor (16) is electrically connected to the conductive rod (14), and the outer diameters of the two adjacent semi-cylindrical sections (17) are different.

2. A sealing gasket radial extrusion force testing device according to claim 1, characterized in that: A rotating shaft is fixedly connected to the middle of the back side of the rotating disk (4), and the other end of the rotating shaft is movably connected to the support plate (2). A rotating motor (8) is fixed to the back side of the support plate (2), and the output shaft end of the rotating motor (8) is fixedly connected to the other end of the rotating shaft.

3. A sealing gasket radial extrusion force testing device according to claim 1, characterized in that: The support block (9) is made of ferromagnetic metal, and the outer surface of the support block (9) is provided with a groove (15) adapted to the electromagnet (6).

4. A sealing gasket radial extrusion force testing device according to claim 1, characterized in that: A clamping groove (18) is provided at one end of the semi-cylindrical section (17), and a clamping column (19) is fixed at the other end of the semi-cylindrical section (17), wherein the clamping groove (18) is adapted to the clamping column (19).

5. The sealing gasket radial extrusion force testing device according to claim 1, characterized in that: The semi-cylinder is in a stepped shape, and the outer diameter of one end of the semi-cylinder away from the rotating disk (4) is smaller than the outer diameter of the other end.

6. A sealing gasket radial extrusion force testing device according to claim 1, characterized in that: Insulating pads are fixed on one side of the rotating disk (4) close to the conductive plate (10) and on the outer surface of the supporting block (9).

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