Sealing ring fracture limit testing device
By designing the seal ring break limit test device, the expansion and tensile test of the seal ring is achieved using the transmission shaft, gear and telescopic rod, and the fracture is judged through the contact between the pressing plate and the side plate, the problem of uneven tension distribution and inability to control the equipment stop in time in the traditional test method is solved, and a more accurate seal ring performance evaluation is achieved.
Patent Information
- Application Number
- CN202421928211.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-09
- Publication Date
- 2025-06-20
- Estimated Expiration
- 2034-08-09
AI Technical Summary
The traditional seal ring tensile limit testing method has problems such as uneven tension distribution, local overstretching or distortion, inability to simulate expansion or compression in actual use, and inability to control the equipment to stop in time.
A seal ring break limit test device is designed. The main gear and the secondary gear are rotated by the rotation of the transmission shaft, which drives the telescopic rod to move, realizes the expansion and tensile test of the seal ring, and judges the seal ring to break through the contact between the pressing plate and the side plate, and controls the motor to stop.
The device can more accurately evaluate the tensile performance of the seal ring, simulate expansion or compression in actual use, and control the equipment to stop in time to obtain the accurate breaking position and dimensions.
Smart Images
Figure CN223005890U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of sealing rings, and particularly to a test device for the breaking limit of a sealing ring. Background Art
[0002] The traditional tensile limit test of a sealing ring usually adopts the method of stretching at both ends, and this method has some limitations and deficiencies.
[0003] Problems of the traditional two - end stretching method: when the two ends of the sealing ring are stretched, the middle part may be subjected to uneven tensile force distribution, resulting in inaccurate test results; since the tensile force directly acts on the two ends, local over - stretching or distortion may occur in the middle part of the sealing ring, which will affect the overall evaluation of the tensile performance; two - end stretching cannot fully simulate the expansion or compression of the sealing ring in actual use, especially in a complex sealing environment; when the sealing ring breaks, the equipment cannot be stopped in time to obtain the accurate breaking position and size. Content of the Utility Model
[0004] Purpose of the utility model: to provide a test device for the breaking limit of a sealing ring to solve the above - mentioned problems existing in the prior art.
[0005] Technical solution: a test device for the breaking limit of a sealing ring, comprising:
[0006] A base and a test component installed on the base;
[0007] The test component includes a fixed shaft installed on the base. At least two support frames are provided on the fixed shaft. A main gear and a sub - gear are provided on one side of the support frame. A plurality of telescopic rods are provided on the support frame. A side plate installed on the telescopic rods is provided between the two support frames. A plurality of arc - shaped grooves are formed on the gear. A slider connected to the telescopic rod is provided in the arc - shaped groove. A scale is provided on the telescopic rod. A transmission shaft passing through the base is provided on the sub - gear;
[0008] A pressing piece is provided on the side plate. Two insulating columns are provided between the pressing piece and the side plate. The two insulating columns are installed on the side plate. One of the insulating columns is connected to the pressing piece through a wire, and a contact point in contact with the pressing piece is provided on the other insulating column.
[0009] In a further embodiment, the support frame is sleeved on the fixed shaft and the support frame is fixedly connected to the fixed shaft, and the fixed shaft is fixedly connected to the base.
[0010] In a further embodiment, the main gear and the sub - gear are meshed. The main gear is movably connected to the support frame, and the sub - gear is movably connected to the fixed shaft.
[0011] In a further embodiment, the telescopic rod is in sliding fit with a groove formed in the support frame, and the slider is in sliding fit with the arc-shaped groove.
[0012] In a further embodiment, the side plate is arc-shaped, one end of the transmission shaft is provided with a motor mounted on the base, and the pressing plate is hinged to the side plate and a return spring is provided at the hinge.
[0013] In a further embodiment, one end of the pressing plate is respectively connected to the input power supply terminal IN and one end of the switch S1 through a wire, the other end of the switch S1 is connected to one end of the normally closed switch S2, the other end of the normally closed switch S2 is connected to one end of the motor, the other end of the motor is connected to the ground wire GND, the other end of the pressing plate is connected to a contact, the contact is connected to the ground T, and the normally closed contact S2 is linked with the pressing plate.
[0014] Beneficial effects: The present utility model discloses a sealing ring fracture limit testing device. In the present utility model, the rotation of the transmission shaft causes the main gear and the sub-gear to rotate. When the sub-gear rotates, the sliding in the arc-shaped groove generates movement, and the movement of the sliding drives the telescopic rod in the support frame to move. The movement of the telescopic rod conducts an expansion and stretching test on the sealing ring sleeved on the side plate. The pressing plate clamps and locks the position of the sealing ring. When the pressing plate contacts the side plate, it is determined that the sealing ring is fractured, and the motor is controlled to stop. Description of the Drawings
[0015] Figure 1 is a three-dimensional schematic diagram of the present utility model.
[0016] Figure 2 is a partial three-dimensional schematic diagram of the present utility model.
[0017] Figure 3 is a partially enlarged schematic diagram of the support frame of the present utility model.
[0018] Figure 4 is a schematic diagram of the electrical connection between the pressing plate and the motor of the present utility model.
[0019] Reference numerals are: 1, base; 2, transmission shaft; 3, fixed shaft; 4, main gear; 5, support frame; 6, telescopic rod; 7, side plate; 8, pressing plate; 9, insulating column; 41, arc-shaped groove; 42, sub-gear; 61, scale; 100, sealing ring. Detailed Embodiments
[0020] The utility model relates to a test device for the breaking limit of a sealing ring. By rotating a transmission shaft, a main gear and a sub-gear are rotated. When the sub-gear rotates, a sliding movement occurs in an arc-shaped groove, and the sliding movement drives a telescopic rod in a support frame to move. The movement of the telescopic rod performs an expansion and stretching test on the sealing ring sleeved on a side plate. A pressing piece clamps and locks the position of the sealing ring. The following is a specific description of the solution through specific embodiments.
[0021] Referring to Figures 1 - 4 As shown in the figure, a test device for the breaking limit of a sealing ring includes:
[0022] A base 1 and a test assembly installed on the base 1;
[0023] The test assembly includes a fixed shaft 3 installed on the base 1. At least two support frames 5 are provided on the fixed shaft 3. A main gear 4 and a sub-gear 42 are provided on one side of the support frame 5. A plurality of telescopic rods 6 are provided on the support frame 5. A side plate 7 installed on the telescopic rods 6 is provided between two support frames 5. A plurality of arc-shaped grooves 41 are formed on the gear. A slider connected to the telescopic rod 6 is provided in the arc-shaped groove 41. A scale 61 is provided on the telescopic rod 6. A transmission shaft 2 passing through the base 1 is provided on the sub-gear 42; the support frame 5 is sleeved on the fixed shaft 3 and the support frame 5 is fixedly connected to the fixed shaft 3; the fixed shaft 3 is fixedly connected to the base 1; the main gear 4 and the sub-gear 42 are meshed, the main gear 4 is movably connected to the support frame 5, and the sub-gear 42 is movably connected to the fixed shaft 3; the telescopic rod 6 is slidably matched with a groove formed in the support frame 5, and the slider is slidably matched with the arc-shaped groove 41; the side plate 7 is arc-shaped. One end of the transmission shaft 2 is provided with a motor installed on the base 1. The pressing piece 8 is hinged to the side plate 7 and a return spring is provided at the hinge.
[0024] A pressing piece 8 is provided on the side plate 7. Two insulating columns 9 are provided between the pressing piece 8 and the side plate 7. The two insulating columns 9 are installed on the side plate 7. One of the insulating columns 9 is connected to the pressing piece 8 through a wire. A contact point in contact with the pressing piece 8 is provided on the other insulating column 9; one end of the pressing piece 8 is respectively connected to an input power supply terminal IN and one end of a switch S1 through a wire. The other end of the switch S1 is connected to one end of a normally closed switch S2. The other end of the normally closed switch S2 is connected to one end of the motor. The other end of the motor is connected to a ground wire GND. The other end of the pressing piece 8 is connected to the contact point. The contact point is connected to the ground T. The normally closed contact S2 is linked with the pressing piece 8.
[0025] Working principle: First, put the sealing ring 100 on the circular column formed by the side plates 7, and press the sealing ring 100 through the pressing plate 8. Under the isolation of the sealing ring 100, the pressing plate 8 is separated from the side plate 7. At this time, press the switch S1, the motor drives the transmission shaft 2 to rotate, the main gear 4 drives the sub-gear 42 to rotate on the fixed shaft 3, and the slider moves along the set direction of the arc-shaped groove 41 under the rotation of the sub-gear 42. At this time, the telescopic rod 6 in the support frame 5 extends under the movement of the slider, gradually changing the diameter of the sealing ring 100 until the sealing ring 100 breaks under the extension of the side plate 7. When it breaks, the contacts on the pressing plate 8 and the side plate 7 are connected, and the normally closed contact S2 is disconnected under the connection. At this time, the motor stops, and the extension distance of the side plate 7 when the sealing ring 100 breaks is locked. The extension limit size when the sealing ring 100 breaks is viewed through the scale 61.
[0026] The preferred embodiments of the present invention have been described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the specific details in the above embodiments. Within the scope of the technical concept of the present invention, various equivalent transformations can be made to the technical solutions of the present invention, and these equivalent transformations all belong to the protection scope of the present invention.
Claims
1. A sealing ring fracture limit testing device, comprising: A base, and a test assembly mounted on the base; The test assembly comprises a fixed shaft mounted on the base, at least two support frames are arranged on the fixed shaft, a main gear and a sub-gear are arranged on one side of the support frame, a plurality of telescopic rods are arranged on the support frame, a side plate mounted on the telescopic rods is arranged between the two support frames, a plurality of arc grooves are opened on the gear, a slider connected to the telescopic rods is arranged in the arc groove, a scale is arranged on the telescopic rod, and a transmission shaft passing through the base is arranged on the sub-gear; A pressing sheet is provided on the side plate, and two insulating columns are provided between the pressing sheet and the side plate. The two insulating columns are installed on the side plate, one of the insulating columns is connected to the pressing sheet through a wire, and the other insulating column is provided with a contact point that contacts the pressing sheet.
2. A sealing ring fracture limit testing device according to claim 1, characterized in that: The support frame is sleeved on the fixed shaft and the support frame is fixedly connected to the fixed shaft, and the fixed shaft is fixedly connected to the base.
3. A sealing ring fracture limit testing device according to claim 1, characterized in that: The main gear is meshed with the auxiliary gear, the main gear is movably connected to the support frame, and the auxiliary gear is movably connected to the fixed shaft.
4. A sealing ring fracture limit testing device according to claim 1, characterized in that: The telescopic rod is slidably matched with a groove provided in the support frame, and the sliding block is slidably matched with the arc groove.
5. A sealing ring fracture limit testing device according to claim 1, characterized in that: The side plate is in an arc shape, one end of the transmission shaft is provided with a motor installed on the base, the pressing plate is hinged to the side plate and a return spring is provided at the hinge.
6. A sealing ring fracture limit testing device according to claim 1, characterized in that: One end of the pressing piece is connected to the input power supply terminal IN and one end of the switch S1 through wires, the other end of the switch S1 is connected to one end of the normally closed switch S2, the other end of the normally closed switch S2 is connected to one end of the motor, the other end of the motor is connected to the ground wire GND, the other end of the pressing piece is connected to the contact, the contact is connected to the earth T, and the normally closed switch S2 is linked to the pressing piece.