A low-temperature brittleness testing tool for vulcanized rubber of an internal blowout prevention tool and a testing method thereof

Abstract

The present invention discloses a low-temperature brittleness testing tool for vulcanized rubber of an internal blowout preventer tool and a testing method thereof, belonging to the technical field of low-temperature brittleness testing. The following scheme is proposed, which includes a low-temperature device, wherein the low-temperature device is equipped with a brittleness testing mechanism, the brittleness testing mechanism includes a switchable testing component, and a driving component is arranged above the switchable testing component; the present invention clamps and fixes the vulcanized rubber by a clamping component, and then drives two lifting components to rotate through the switchable testing component to swap the positions of the clamping components, thereby completing the switching of the vulcanized rubber, so that the vulcanized rubber can be continuously tested by switching the positions, so that the clamping can be completed on the other side during the vulcanized rubber testing process, thereby improving the efficiency of the test by switching and repeating the operation, and after the vulcanized rubber is lifted out of the low-temperature device by the lifting component, the tooth plate and the adjustment component are driven to drive, so that the collecting component is located below the vulcanized rubber, thereby automatically tightening the broken sample.

Description

Technical Field

[0001] The present invention relates to the technical field of low-temperature brittleness testing, and in particular to a low-temperature brittleness testing tool for vulcanized rubber of an internal blowout preventer tool and a testing method thereof. Background Art

[0002] The low-temperature brittleness test for vulcanized rubber used in internal blowout preventer tools is a key test for evaluating the material's ability to resist brittle fracture in low-temperature environments. This test simulates extreme low-temperature conditions, subjecting vulcanized rubber samples to mechanical tests such as impact and bending, observing and recording whether fracture occurs. This determines the material's brittle temperature and helps ensure the reliability and safety of internal blowout preventer tools during low-temperature operations.

[0003] Currently, the industry generally uses specialized impact testing machines to test the low-temperature brittleness of vulcanized rubber used in internal blowout preventer tools. To further improve test accuracy, the common practice is to select multiple vulcanized rubber samples for testing. Through detailed statistics and analysis of the fracture patterns of these samples in low-temperature environments, the low-temperature brittleness of the vulcanized rubber can be more accurately assessed. However, this process involves clamping and disassembling the vulcanized rubber samples, as well as collecting and handling the debris, which is quite time-consuming. This significantly increases the overall time cost when testing multiple samples.

[0004] Furthermore, during low-temperature testing, vulcanized rubber samples must be pre-conditioned in a specific low-temperature environment. Notably, failure to promptly cover the sample after treatment will result in a rapid loss of temperature in the low-temperature medium, leading to unnecessary waste of resources. This is especially true when testing multiple samples, as the frequent removal and placement of the cover increases operational complexity and significantly reduces overall testing efficiency.

[0005] In response to the above problems, the present invention document proposes a low-temperature brittleness testing tool for vulcanized rubber of an internal blowout preventer tool and a testing method thereof. Summary of the Invention

[0006] The purpose of the present invention is to address the time-consuming process of clamping, disassembling, collecting and handling the vulcanized rubber samples during the prior art low-temperature brittleness testing of multiple samples of vulcanized rubber. This process significantly increases the overall time cost required for testing multiple samples. In addition, if the cover plate is not covered in time after treatment, the temperature of the low-temperature medium will be rapidly lost, resulting in unnecessary waste of resources. In particular, when conducting multiple sample tests, the need to frequently remove and place the cover plate not only increases the complexity of the operation but also greatly reduces the overall efficiency of the test. Therefore, a low-temperature brittleness testing tool for vulcanized rubber with an internal blowout preventer and a testing method thereof are proposed.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] A low-temperature brittleness testing tool for vulcanized rubber of an internal blowout prevention tool, comprising a low-temperature device equipped with a brittleness testing mechanism;

[0009] The brittleness testing mechanism includes a switchable testing component, a driving component is provided above the switchable testing component, lifting components are provided at both ends of the driving component, a clamping component is provided at one end of the lifting component, the clamping component is transmitted to the adjustment component, a collecting component is provided below the adjustment component, a shielding component is provided below one of the collecting components, and the shielding component is provided at the low-temperature port position of the low-temperature equipment.

[0010] Preferably, the switchable test assembly includes a mounting seat and a shaft disc, the shaft disc is rotatably mounted on the mounting seat via a bearing, a fixing column is fixedly connected to the middle of the mounting seat, and an impact device is fixedly mounted above the fixing column;

[0011] The fixed column is fixedly connected to the motor through a support, the output shaft of the motor is fixedly connected to a first gear, a second gear is engaged with one side of the first gear, the second gear is fixedly connected to the outside of the shaft disc, and a switching plate is also fixedly connected to the shaft disc. Two auxiliary wheels are fixedly connected below the switching plate, and the auxiliary wheels are provided on the low-temperature equipment.

[0012] Preferably, the shielding assembly includes a guide rail, which is fixedly connected to the low-temperature port above the low-temperature equipment. A sealing plate is provided in the guide rail, and a limiting plate is fixedly connected above the sealing plate. Both sides of the sealing plate are fixedly connected with a first slider, and the two first sliders slide in the guide rail, and a second spring is fixedly connected between the side wall of the guide rail and the sealing plate.

[0013] Preferably, the collecting assembly includes two side plates, which are fixedly connected to the switching plate. A slide groove is provided between the two side plates, a second slider is slidably connected in the slide groove, a material hopper is fixedly connected between the two second sliders, and a limit frame is fixedly connected below the material hopper. The limit frame passes through the switching plate and extends to the bottom of the switching plate. The two limit frames are switched and engaged with the limit plate by rotating 180°.

[0014] Preferably, the driving assembly includes a fixing plate, the fixing plate is fixedly connected to the top of the fixing column, an electric push rod is fixedly installed above the fixing plate, and one end of the electric push rod is fixedly connected to a snap-fit ​​seat.

[0015] Preferably, the lifting assembly includes a circular shell and a cylindrical tube, the circular shell is fixedly connected to the cylindrical tube through a bracket, a first piston rod is provided inside the circular shell, the first piston rod passes through the circular shell and is fixedly connected to the docking seat, and the two docking seats are switched to engage with the engaging seat by rotating 180°.

[0016] Preferably, one side of the circular shell is connected to the cylindrical barrel through a delivery pipe, a second piston rod is provided inside the cylindrical barrel, a first spring is fixedly connected between the second piston rod and the bottom wall of the cylindrical barrel, and one side of the cylindrical barrel is fixedly connected to the switching plate through a fixing frame.

[0017] Preferably, the clamping assembly includes a clamping member, wherein the vulcanized rubber is clamped therein, an extension plate is fixedly connected to one side of the clamping member, and a tooth plate is fixedly connected to one end of the extension plate.

[0018] Preferably, the adjustment assembly includes a roller body and a guide frame, the roller body is rotatably mounted on one end of the fixed frame and the guide frame respectively through two bearings, the roller body is fixedly connected to a third gear, and the third gear is engaged with the gear plate;

[0019] An arc groove is provided on the roller body, a driving rod slides in the arc groove, the driving rod is fixedly connected to the inside of the movable plate, the movable plate slides on the guide frame, a third spring is fixedly connected between the movable plate and the fixed frame, a connecting plate is fixedly connected below the movable plate, and the bottom of the connecting plate is fixedly connected to the material hopper.

[0020] A method for testing a low-temperature brittleness test fixture for vulcanized rubber of an internal blowout preventer tool comprises the following steps:

[0021] S1. The vulcanized rubber is clamped and fixed by a clamping member. Then, a motor drives the first gear to rotate. The first gear and the second gear transmit the transmission, causing the second gear to drive the shaft disk to rotate. The shaft disk drives the switching plate to rotate. The switching plate drives the lifting assembly and the clamping assembly to rotate, so that the fixed vulcanized rubber is transferred to another position.

[0022] S2. After the vulcanized rubber switches positions, the engaging seat and the docking seat are engaged. At this time, the electric push rod pushes the engaging seat and the docking seat to move, and the docking seat drives the first piston rod to move, so that the first piston rod presses the liquid into the cylindrical barrel through the delivery pipe, and the second piston rod is driven downward by the hydraulic pressure, and the second piston rod drives the clamping piece and the gear plate to move downward. The gear plate and the third gear drive the third gear to drive the roller body to rotate, and the roller body drives the driving rod to move through the arc groove, and the driving rod drives the movable plate and the connecting plate to move, and the connecting plate drives the material hopper to move, so that the material hopper moves through the limit frame to drive the limit plate to move, and the limit plate drives the sealing plate to move, so that the sealing plate compresses the second spring and opens the low-temperature port of the low-temperature equipment;

[0023] S3. When the low-temperature port is opened, the clamping piece smoothly puts the vulcanized rubber into the low-temperature equipment to freeze the sample. After freezing, the electric push rod retracts, allowing the workpiece to move upward out of the low-temperature equipment. At the same time, the material hopper and the sealing plate move to the right, so that the sealing plate covers the low-temperature port.

[0024] S4. When the material hopper is under the vulcanized rubber, the vulcanized rubber is subjected to an impact test through the impact equipment. After the impact, the resulting broken samples are collected through the material hopper;

[0025] S5. After the initial test, the position of the clamping assembly is changed again, and the position is swapped, and the impact test is carried out again. During the test process, the internal freezing temperature parameters are adjusted through the low-temperature equipment, and test operations are carried out at different temperatures.

[0026] Compared with the prior art, the present invention provides a low-temperature brittleness testing tool for vulcanized rubber of an internal blowout preventer tool and a testing method thereof, which has the following beneficial effects:

[0027] 1. The internal blowout preventer tool vulcanized rubber low-temperature brittleness test fixture and test method thereof clamps and fixes the vulcanized rubber through a clamping assembly, and then drives two lifting assemblies to rotate through a switchable test assembly to swap the positions of the clamping assemblies, thereby completing the switching of the vulcanized rubber, so that the vulcanized rubber can be continuously tested by switching positions, so that the clamping can be completed on the other side during the vulcanized rubber testing process, thereby improving the efficiency of the test by switching and repeating the operation. After the vulcanized rubber is lifted out of the low-temperature equipment by the lifting assembly, the tooth plate and the adjustment assembly are driven so that the collection assembly is located below the vulcanized rubber, thereby automatically tightening the broken sample.

[0028] 2. The internal blowout preventer tool vulcanized rubber low-temperature brittleness testing fixture and testing method thereof, by retracting the electric push rod, the electric push rod drives the positioning seat and the docking seat to move, so that the first piston rod can drive the second piston rod to move upward through the hydraulic pressure, so that the clamping member follows the second piston rod to move upward, the clamping member drives the tooth plate and the third gear to drive the roller body to move the driving rod through the arc groove, so that the movable plate drives the connecting plate and the material hopper to move, and the material hopper drives the sealing plate to move through the limit frame and the limit plate. After the vulcanized rubber is taken out of the low-temperature equipment, the sealing plate can automatically seal the low-temperature port of the low-temperature equipment, thereby reducing temperature leakage.

[0029] 3. The internal blowout prevention tool vulcanized rubber low-temperature brittleness test fixture and test method thereof, by switching the test component to drive the lifting component to rotate, the lifting component drives the clamping component to rotate, and the two clamping components switch positions to realize the exchange of the position of the vulcanized rubber, thereby meeting the continuous testing operation, and at the same time, the driving component drives the lifting component to move, so that the lifting component can drive the vulcanized rubber through the clamping component to smoothly enter the low-temperature equipment for freezing. After freezing, the lifting component takes out the vulcanized rubber, and at the same time the clamping component and the adjustment component are transmitted. The adjustment component can drive the shielding component through the collecting component to close the low-temperature port of the low-temperature equipment, thereby improving the detection efficiency through continuous detection, and cooperates with the automatic shielding of the low-temperature port to reduce the spread of low temperature and improve energy utilization. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 A three-dimensional view of a low-temperature brittleness test tool for vulcanized rubber of an internal blowout prevention tool proposed by the present invention;

[0031] Figure 2 A three-dimensional view of the low-temperature equipment for the low-temperature brittleness test tool for vulcanized rubber of an internal blowout preventer tool proposed by the present invention;

[0032] Figure 3 A three-dimensional view of a brittleness testing mechanism of a low-temperature brittleness testing tool for vulcanized rubber of an internal blowout prevention tool proposed by the present invention;

[0033] Figure 4 This is a structural view of the connection between the guide rail and the cryogenic equipment of a low-temperature brittleness test fixture for vulcanized rubber of an internal blowout preventer tool proposed by the present invention;

[0034] Figure 5 For the present invention Figure 3 A magnified view of point A;

[0035] Figure 6 A three-dimensional view of a switch panel of a low-temperature brittleness test fixture for vulcanized rubber in an internal blowout prevention tool proposed by the present invention;

[0036] Figure 7 A three-dimensional view of the shaft disc of a tool for testing low-temperature brittleness of vulcanized rubber in an internal blowout prevention tool proposed by the present invention;

[0037] Figure 8 A three-dimensional view of the drive assembly of a low-temperature brittleness test fixture for vulcanized rubber in an internal blowout prevention tool proposed by the present invention;

[0038] Figure 9 This is a structural view of the connection between the lifting assembly and the clamping assembly of a tool for testing low-temperature brittleness of vulcanized rubber in an internal blowout preventer tool proposed by the present invention;

[0039] Figure 10A perspective view of a cross-section of a lifting assembly of a tool for testing low-temperature brittleness of vulcanized rubber in an internal blowout prevention tool proposed by the present invention;

[0040] Figure 11 A three-dimensional view of the adjustment assembly of a low-temperature brittleness test fixture for vulcanized rubber in an internal blowout prevention tool proposed by the present invention;

[0041] Figure 12 For the present invention Figure 11 Enlarged view of point B.

[0042] In the figure: 100, cryogenic equipment; 200, brittleness test mechanism; 201, switchable test assembly; 2011, mounting seat; 2012, shaft disc; 2013, second gear; 2014, first gear; 2015, motor; 2016, switching plate; 2017, fixed column; 2018, auxiliary wheel; 202, drive assembly; 2021, electric push rod; 2022, fixed plate; 2023, engaging seat; 203, lifting assembly; 2031, circular shell; 2032, docking seat; 2033, first piston rod; 2034, bracket; 2035, delivery pipe; 2036, second piston rod; 2037, first spring; 2038, cylindrical barrel; 2039, fixed Frame; 204, impact device; 205, shielding assembly; 2051, sealing plate; 2052, second spring; 2053, first slider; 2054, limit plate; 2055, guide rail; 206, collecting assembly; 2061, side plate; 2062, slide; 2063, material hopper; 2064, second slider; 2065, limit frame; 207, adjustment assembly; 2071, roller body; 2072, guide frame; 2073, arc groove; 2074, driving rod; 2075, movable plate; 2076, connecting plate; 2077, third gear; 2078, third spring; 208, clamping assembly; 2081, clamping member; 2082, tooth plate; 2083, extension plate. DETAILED DESCRIPTION

[0043] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0044] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0045] Example 1: Reference Figures 1-12 A low-temperature brittleness test tool for vulcanized rubber of an internal blowout preventer tool comprises a low-temperature device 100 on which a brittleness testing mechanism 200 is mounted;

[0046] The brittleness test mechanism 200 includes a switchable test assembly 201, which includes a mounting seat 2011 and a shaft disc 2012. The shaft disc 2012 is rotatably mounted on the mounting seat 2011 through a bearing. The shaft disc 2012 can rotate smoothly through the bearing, so that the switch plate 2016 can rotate smoothly. A fixed column 2017 is fixedly connected to the middle of the mounting seat 2011. An impact device 204 is fixedly installed above the fixed column 2017. The impact device 204 can be used to impact the frozen sulfur. The impact test of the vulcanized rubber is carried out, and the fixed column 2017 is fixedly connected to the motor 2015 through the support. The output shaft of the motor 2015 is fixedly connected to the first gear 2014. The second gear 2013 is engaged with one side of the first gear 2014. The motor 2015 drives the first gear 2014 and the second gear 2013 to transmit, thereby realizing power transmission, so that the shaft disk 2012 rotates and the lifting component 203 is driven to rotate through the switching plate 2016, thereby switching the position of the vulcanized rubber to meet the continuous chemical test. The second gear 2013 is fixedly connected to the outside of the shaft disc 2012, and the shaft disc 2012 is also fixedly connected to the switching plate 2016. Two auxiliary wheels 2018 are fixedly connected to the bottom of the switching plate 2016. The auxiliary wheels 2018 can support the switching plate 2016 to keep the switching plate 2016 stably supporting the lifting assembly 203. At the same time, the good rolling performance of the auxiliary wheels 2018 can assist the switching plate 2016 to move smoothly, and the auxiliary wheels 2018 are provided on the low temperature equipment 100 A drive assembly 202 is provided above the switchable test assembly 201. The drive assembly 202 includes a fixed plate 2022, which is fixedly connected to the top of the fixed column 2017. An electric push rod 2021 is fixedly installed above the fixed plate 2022. The electric push rod 2021 is telescopically moved, thereby controlling the movement of the first piston rod 2033 through the engaging seat 2023 and the docking seat 2032. One end of the electric push rod 2021 is fixedly connected to the engaging seat 2023.

[0047] Both ends of the driving component 202 are provided with a lifting component 203, and the lifting component 203 includes a circular shell 2031 and a cylindrical tube 2038. The circular shell 2031 is fixedly connected to the cylindrical tube 2038 through a bracket 2034. A first piston rod 2033 is provided inside the circular shell 2031. The first piston rod 2033 passes through the circular shell 2031 and is fixedly connected to the docking seat 2032. The two docking seats 2032 can be switched to engage with the locking seat 2023 by rotating 180 degrees. The docking seat 2032 can be switched to engage with the locking seat by rotating, so that the locking seat and the docking seat 2032 can be kept connected, and the docking seat 2032 can be removed from the locking seat, so that the lifting component 203 can rotate smoothly. The side is connected to the cylindrical barrel 2038 through the delivery pipe 2035, and the circular shell 2031 and the cylindrical barrel 2038 can be connected through the delivery pipe 2035, so that the flow of liquid between the circular shell 2031 and the cylindrical barrel 2038 can be realized. A second piston rod 2036 is provided inside the cylindrical barrel 2038, and a first spring 2037 is fixedly connected between the second piston rod 2036 and the bottom wall of the cylindrical barrel 2038. One side of the cylindrical barrel 2038 is fixedly connected to the switching plate 2016 through a fixing frame 2039. The position of the cylindrical barrel 2038 can be fixed by the fixing frame 2039 to maintain the stability of the cylindrical barrel 2038. A clamping assembly 208 is provided at one end of the lifting assembly 203, and the clamping assembly 208 includes a clamping member 2081. The position of the vulcanized rubber can be fixed by the clamping member 2081 to prevent the vulcanized rubber from falling off. The vulcanized rubber is clamped in the clamping member 2081. An extension plate 2083 is fixedly connected to one side of the clamping member 2081. One end of the extension plate 2083 is fixedly connected to a tooth plate 2082. The clamping assembly 208 is transmitted to the adjustment assembly 207. The adjustment assembly 207 includes a roller body 2071 and a guide frame 2072. The roller body 2071 is rotatably mounted on the fixed frame 2039 and one end of the guide frame 2072 respectively through two bearings. A third gear 2077 is fixedly connected to the roller body 2071. The third gear 2077 is meshed with the tooth plate 2082. The tooth plate 2082 moves to transmit the third gear 2077, so that the third gear 2077 can drive the roller body 2071. Rotation, an arc groove 2073 is provided on the roller body 2071. Through the arc setting of the arc groove 2073, the rotation of the roller body 2071 can drive the driving rod 2074 to realize translational motion through the arc groove 2073. A driving rod 2074 slides in the arc groove 2073. The driving rod 2074 is fixedly connected to the inside of the movable plate 2075. The movable plate 2075 slides on the guide frame 2072. The movable plate 2075 can slide smoothly on the guide frame 2072, so that the connecting plate 2076 and the driving rod 2074 can move smoothly. A third spring 2078 is fixedly connected between the movable plate 2075 and the fixed frame 2039. The position of the movable plate 2075 can be maintained by the third spring 2078, thereby limiting the position of the material hopper 2063.To prevent the material hopper 2063 from being easily displaced, a connecting plate 2076 is fixedly connected to the bottom of the movable plate 2075, and the bottom of the connecting plate 2076 is fixedly connected to the material hopper 2063. A collecting assembly 206 is provided below the adjusting assembly 207, and the collecting assembly 206 includes two side plates 2061, and the two side plates 2061 are fixedly connected to the switching plate 2016. A chute 2062 is provided between the two side plates 2061, and a second slider 2064 is slidably connected in the chute 2062. The second slider 2064 can slide smoothly along the chute 2062, so that the material hopper 2063 maintains a smooth movement. The material hopper 2063 is fixedly connected between the two second sliders 2064. 3 can collect the crushed samples. The lower part of the material hopper 2063 is fixedly connected to the limit frame 2065. The limit frame 2065 passes through the switching plate 2016 and extends to the lower part of the switching plate 2016. The switching plate 2016 is provided with two openings, so that the openings can provide space for the limit frames 2065 to move smoothly. The two limit frames 2065 can be switched and engaged with the limit plate 2054 by rotating 180 degrees. The limit frames 2065 can be engaged with the limit plate 2054 by rotating. After the limit frames 2065 are connected to the limit plate 2054, the material hopper 2063 can smoothly drive the sealing plate 2051 to move. A shielding component 205 is provided below one of the collection components 206.

[0048] In this embodiment: the vulcanized rubber is clamped and fixed by the clamping assembly 208, and then the first gear 2014 and the second gear 2013 are driven by the motor 2015, the second gear 2013 drives the shaft disk 2012 to rotate, the shaft disk 2012 drives the switching plate 2016 to rotate, so that the switching plate 2016 drives the lifting assembly 203 and the clamping assembly 208 to rotate, so that the positions of the two clamping assemblies 208 are swapped, thereby completing the switching of the vulcanized rubber, so that the vulcanized rubber can be continuously tested by switching the position, so that the vulcanized rubber testing process can be completed on the other side, so that the switching operation can be repeated to improve the efficiency of the test, and the electric push rod 2021 is retracted, the electric push rod 2021 drives the card seat and the docking seat 2032 to move, and the docking seat 20 32 drives the first piston rod 2033 to move, so that the first piston rod 2033 drives the second piston rod 2036 to move upward through the hydraulic pressure, and the second piston rod 2036 drives the clamping member 2081 to move upward, so that the clamping member 2081 lifts the vulcanized rubber out of the low-temperature equipment 100, and the rising of the clamping member 2081 also drives the tooth plate 2082 and the third gear 2077 to transmit, so that the third gear 2077 drives the roller body 2071 to rotate, and the roller body 2071 drives the driving rod 2074 to move through the arc groove 2073, and the driving rod 2074 drives the movable plate 2075 and the connecting plate 2076 to move, and the connecting plate 2076 drives the material hopper 2063 to move, so that the material hopper 2063 is smoothly located below the vulcanized rubber, thereby automatically tightening the crushed sample.

[0049] Example 2: Reference Figure 4-Figure 5 and Figures 8-12 A low-temperature brittleness test fixture for vulcanized rubber of an internal blowout preventer tool includes a drive assembly 202, which includes a fixed plate 2022, which is fixedly connected to the top of a fixed column 2017, and an electric push rod 2021 is fixedly installed above the fixed plate 2022, and one end of the electric push rod 2021 is fixedly connected to a snap seat 2023;

[0050] The lifting assembly 203 includes a circular shell 2031 and a cylindrical barrel 2038. The circular shell 2031 is fixedly connected to the cylindrical barrel 2038 via a bracket 2034. A first piston rod 2033 is provided inside the circular shell 2031. The first piston rod 2033 passes through the circular shell 2031 and is fixedly connected to the docking seat 2032. The two docking seats 2032 can be switched and engaged with the engaging seat 2023 by rotating 180 degrees. One side of the circular shell 2031 is connected to the cylindrical barrel 2038 via a delivery pipe 2035. A second piston rod 2036 is provided inside the cylindrical barrel 2038. A first spring 2037 is fixedly connected between the second piston rod 2036 and the bottom wall of the cylindrical barrel 2038. One side of the cylindrical barrel 2038 is fixedly connected to the switching plate 2016 via a fixing bracket 2039.

[0051] The adjusting assembly 207 includes a roller body 2071 and a guide frame 2072. The roller body 2071 is rotatably mounted on the fixed frame 2039 and one end of the guide frame 2072 respectively through two bearings. The roller body 2071 is fixedly connected to a third gear 2077, which is engaged with the tooth plate 2082. An arc groove 2073 is provided on the roller body 2071. A driving rod 2074 slides in the arc groove 2073. The driving rod 2074 is fixedly connected to the inside of a movable plate 2075. The movable plate 2075 slides on the guide frame 2072. A third spring 2078 is fixedly connected between the movable plate 2075 and the fixed frame 2039. A connecting plate 2076 is fixedly connected to the bottom of the movable plate 2075. The bottom of the connecting plate 2076 is fixedly connected to the material hopper 2063.

[0052] The shielding assembly 205 includes a guide rail 2055, which is fixedly connected to the low-temperature port above the low-temperature equipment 100. A sealing plate 2051 is provided in the guide rail 2055, and a limiting plate 2054 is fixedly connected above the sealing plate 2051. First sliders 2053 are fixedly connected on both sides of the sealing plate 2051. The two first sliders 2053 slide in the guide rail 2055. The guide rail 2055 can guide the first slider 2053 to keep the first slider 2053 moving smoothly and the sealing plate 2051 sliding smoothly. A second spring 2052 is fixedly connected between the side wall of the guide rail 2055 and the sealing plate 2051. The second spring 2052 can maintain the position of the sealing plate 2051 to prevent the sealing plate 2051 from displacement. The shielding assembly 205 is set at the low-temperature port position of the low-temperature equipment 100.

[0053] In this embodiment: the electric push rod 2021 retracts, so that the electric push rod 2021 drives the locking seat and the docking seat 2032 to move, so that the first piston rod 2033 can drive the second piston rod 2036 to move upward through hydraulic pressure, so that the clamping member 2081 follows the second piston rod 2036 to move upward, and the clamping member 2081 drives the tooth plate 2082 and the third gear 2077 to transmit, so that the roller body 2071 drives the driving rod 2074 to move through the arc groove 2073, so that the movable plate 2075 drives the connecting plate 2076 and the material hopper 2063 to move, and the material hopper 2063 drives the sealing plate 2051 to move through the limit frame 2065 and the limit plate 2054, so that after the vulcanized rubber is taken out of the low-temperature equipment 100, the sealing plate 2051 can automatically seal the low-temperature port of the low-temperature equipment 100, thereby reducing temperature leakage.

[0054] Example 3: Reference Figure 3 and Figure 6A low-temperature brittleness testing tool for vulcanized rubber of an internal blowout preventer tool includes a brittleness testing mechanism 200. The brittleness testing mechanism 200 includes a switchable testing component 201. A driving component 202 is provided above the switchable testing component 201. Lifting components 203 are provided at both ends of the driving component 202. A clamping component 208 is provided at one end of the lifting component 203. The clamping component 208 is transmitted to the adjusting component 207. A collecting component 206 is provided below the adjusting component 207. A shielding component 205 is provided below one of the collecting components 206. The shielding component 205 is provided at the low-temperature port position of the low-temperature equipment 100.

[0055] In this embodiment, the test assembly is switched to drive the lifting assembly 203 to rotate, so that the lifting assembly 203 drives the clamping assembly 208 to rotate, and the two clamping assemblies 208 are switched to realize the exchange of the position of the vulcanized rubber, thereby meeting the continuous testing operation. At the same time, the driving assembly 202 drives the lifting assembly 203 to move, so that the lifting assembly 203 can drive the vulcanized rubber to smoothly enter the low-temperature equipment 100 for freezing through the clamping assembly 208. After freezing, the lifting assembly 203 takes out the vulcanized rubber, and at the same time, the clamping assembly 208 and the adjusting assembly 207 are transmitted. The adjusting assembly 207 can drive the shielding assembly 205 to close the low-temperature port of the low-temperature equipment 100 through the collecting assembly 206, thereby improving the detection efficiency through continuous detection, and cooperating with the automatic shielding of the low-temperature port, thereby reducing the spread of low temperature and improving energy utilization.

[0056] A method for testing a low-temperature brittleness test fixture for vulcanized rubber of an internal blowout preventer tool comprises the following steps:

[0057] S1. The vulcanized rubber is clamped and fixed by the clamping member 2081. Then, the motor 2015 drives the first gear 2014 to rotate. The first gear 2014 and the second gear 2013 transmit the transmission, so that the second gear 2013 drives the shaft disk 2012 to rotate. The shaft disk 2012 drives the switching plate 2016 to rotate. The switching plate 2016 drives the lifting assembly 203 and the clamping assembly 208 to rotate, so that the fixed vulcanized rubber is transferred to another position.

[0058] S2. After the vulcanized rubber switches positions, the engaging seat 2023 and the docking seat 2032 are engaged. At this time, the electric push rod 2021 pushes the engaging seat and the docking seat 2032 to move, and the docking seat 2032 drives the first piston rod 2033 to move, so that the first piston rod 2033 presses the liquid into the cylindrical barrel 2038 through the delivery pipe 2035, and then the second piston rod 2036 is driven downward by the hydraulic pressure. The second piston rod 2036 drives the clamping member 2081 and the tooth plate 2082 to move downward, and the tooth plate 2082 and the third gear 2077 are connected. The third gear 2077 drives the roller body 2071 to rotate, and the roller body 2071 drives the driving rod 2074 to move through the arc groove 2073. The driving rod 2074 drives the movable plate 2075 and the connecting plate 2076 to move. The connecting plate 2076 drives the material hopper 2063 to move, so that the material hopper 2063 moves through the limiting frame 2065 to drive the limiting plate 2054 to move. The limiting plate 2054 drives the sealing plate 2051 to move, so that the sealing plate 2051 compresses the second spring 2052 and opens the low-temperature port of the low-temperature device 100.

[0059] S3. When the low-temperature port is opened, the clamping member 2081 smoothly puts the vulcanized rubber into the low-temperature device 100 to freeze the sample. After freezing, the electric push rod 2021 retracts, allowing the workpiece to move upward out of the low-temperature device 100. At the same time, the material hopper 2063 and the sealing plate 2051 move to the right, so that the sealing plate 2051 covers the low-temperature port.

[0060] S4. When the material hopper 2063 is below the vulcanized rubber, the vulcanized rubber is subjected to an impact test by the impact device 204. After the impact, the resulting broken samples are collected by the material hopper 2063.

[0061] S5. After the initial test, the position of the clamping assembly 208 is switched and the impact test is performed again. During the test, the internal freezing temperature parameters are adjusted by the low-temperature device 100 to perform test operations at different temperatures.

[0062] The above are only preferred specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with this technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solutions and inventive concepts of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A low-temperature brittleness test tool for vulcanized rubber of an internal blowout preventer tool, comprising a low-temperature device (100), characterized in that: The low-temperature device (100) is equipped with a brittleness testing mechanism (200); The brittleness testing mechanism (200) comprises a switchable testing component (201), a driving component (202) is provided above the switchable testing component (201), lifting components (203) are provided at both ends of the driving component (202), a clamping component (208) is provided at one end of the lifting component (203), the clamping component (208) is driven by an adjusting component (207), a collecting component (206) is provided below the adjusting component (207), a shielding component (205) is provided below one of the collecting components (206), and the shielding component (205) is provided at a low-temperature port position of the low-temperature device (100); The adjustment assembly (207) comprises a roller body (2071) and a guide frame (2072); a third gear (2077) is fixedly connected to the roller body (2071); and the third gear (2077) is meshed with a toothed plate (2082); The roller body (2071) is provided with an arc-shaped groove (2073), a driving rod (2074) slides in the arc-shaped groove (2073), the driving rod (2074) is fixedly connected to the inside of the movable plate (2075), the movable plate (2075) slides on the guide frame (2072), a third spring (2078) is fixedly connected between the movable plate (2075) and the fixed frame (2039), a connecting plate (2076) is fixedly connected below the movable plate (2075), and the connecting plate (2076) is fixedly connected to the material hopper (2063) below. The switchable test assembly (201) comprises a mounting seat (2011) and a shaft disc (2012); a fixing column (2017) is fixedly connected to the middle of the mounting seat (2011); and an impact device (204) is fixedly installed above the fixing column (2017); The driving assembly (202) comprises a fixed plate (2022), an electric push rod (2021) is fixedly mounted above the fixed plate (2022), and one end of the electric push rod (2021) is fixedly connected to a snap-fit ​​seat (223); The lifting assembly (203) comprises a circular shell (2031) and a cylindrical barrel (2038); a first piston rod (2033) is provided inside the circular shell (2031); the first piston rod (2033) passes through the circular shell (2031) and is fixedly connected to the docking seat (2032); the two docking seats (2032) are switched to engage with the engaging seat (2023) by rotating 180°; One side of the circular shell (2031) is in communication with the cylindrical barrel (2038) via a delivery pipe (2035); a second piston rod (2036) is provided inside the cylindrical barrel (2038); a first spring (2037) is fixedly connected between the second piston rod (2036) and the bottom wall of the cylindrical barrel (2038); and one side of the cylindrical barrel (2038) is fixedly connected to the switching plate (2016) via a fixing frame (2039); The clamping assembly (208) comprises a clamping member (2081), one side of the clamping member (2081) is fixedly connected to an extension plate (2083), and one end of the extension plate (2083) is fixedly connected to a tooth plate (2082).

2. The low-temperature brittleness testing tool for vulcanized rubber of an internal blowout preventer according to claim 1, characterized in that: The shaft disc (2012) is rotatably mounted on the mounting seat (2011) via a bearing; The fixed column (217) is fixedly connected to the motor (2015) via a support, the output shaft of the motor (2015) is fixedly connected to a first gear (2014), one side of the first gear (2014) is meshed with a second gear (2013), the second gear (2013) is fixedly connected to the outside of the shaft disc (2012), the shaft disc (2012) is also fixedly connected to a switching plate (2016), and two auxiliary wheels (2018) are fixedly connected below the switching plate (2016), and the auxiliary wheels (2018) are provided on the low-temperature equipment (100).

3. The low-temperature brittleness testing tool for vulcanized rubber of an internal blowout preventer according to claim 2, characterized in that: The shielding assembly (205) comprises a guide rail (2055), the guide rail (2055) being fixedly connected to a low-temperature port above the low-temperature equipment (100), a sealing plate (2051) being provided in the guide rail (2055), a limiting plate (2054) being fixedly connected above the sealing plate (2051), first sliders (2053) being fixedly connected to both sides of the sealing plate (2051), the two first sliders (2053) sliding in the guide rail (2055), and a second spring (2052) being fixedly connected between the side wall of the guide rail (2055) and the sealing plate (2051).

4. The low-temperature brittleness testing tool for vulcanized rubber of an internal blowout preventer according to claim 3, characterized in that: The collecting assembly (206) comprises two side plates (2061), the two side plates (2061) are fixedly connected to the switching plate (2016), a chute (2062) is provided between the two side plates (2061), a second slider (2064) is slidably connected in the chute (2062), a material hopper (2063) is fixedly connected between the two second sliders (2064), a limiting frame (2065) is fixedly connected below the material hopper (2063), the limiting frame (2065) passes through the switching plate (2016) and extends to the bottom of the switching plate (2016), and the two limiting frames (2065) are switched and engaged with the limiting plate (2054) by rotating 180 degrees.

5. The low-temperature brittleness testing tool for vulcanized rubber of an internal blowout preventer according to claim 4, characterized in that: The fixing plate (2022) is fixedly connected above the fixing column (2017).

6. The low-temperature brittleness testing tool for vulcanized rubber of an internal blowout preventer according to claim 5, characterized in that: The circular shell (2031) is fixedly connected to the cylindrical barrel (2038) via a bracket (2034).

7. The low-temperature brittleness testing tool for vulcanized rubber of an internal blowout preventer according to claim 6, characterized in that: The clamping member (2081) holds vulcanized rubber.

8. The low-temperature brittleness testing tool for vulcanized rubber of an internal blowout preventer according to claim 7, characterized in that: The roller body (2071) is rotatably mounted on one end of the fixed frame (2039) and the guide frame (2072) via two bearings.

9. The method for testing the low-temperature brittleness test tool for vulcanized rubber of an internal blowout preventer according to claim 8, characterized in that: The following steps are involved: S1. The vulcanized rubber is clamped and fixed by the clamping member (2081), and then the first gear (2014) is driven to rotate by the motor (2015). The first gear (2014) and the second gear (2013) are driven to rotate, so that the second gear (2013) drives the shaft disk (2012) to rotate, the shaft disk (2012) drives the switching plate (2016) to rotate, and the switching plate (2016) drives the lifting component (203) and the clamping component (208) to rotate, so that the fixed vulcanized rubber is transferred to another position; S2. After the vulcanized rubber is switched to another position, the engaging seat (2023) and the docking seat (2032) are engaged. At this time, the electric push rod (2021) pushes the engaging seat and the docking seat (2032) to move. The docking seat (2032) drives the first piston rod (2033) to move, so that the first piston rod (2033) presses the liquid into the cylindrical barrel (2038) through the delivery pipe (2035). Then, the second piston rod (2036) is driven downward by the hydraulic pressure. The second piston rod (2036) drives the clamping member (2081) and the tooth plate (2082) to move downward. The tooth plate (2082) and the third gear (2077) are driven to rotate. The third gear (2077) drives the roller body (2071) to rotate, and the roller body (2071) drives the driving rod (2074) to move through the arc groove (2073). The driving rod (2074) drives the movable plate (2075) and the connecting plate (2076) to move. The connecting plate (2076) drives the material bucket (2063) to move, so that the material bucket (2063) moves through the limiting frame (2065) to drive the limiting plate (2054) to move. The limiting plate (2054) drives the sealing plate (2051) to move, so that the sealing plate (2051) compresses the second spring (2052) and opens the low-temperature port of the low-temperature device (100). S3. When the low-temperature port is opened, the clamping member (2081) smoothly puts the vulcanized rubber into the low-temperature device (100) to freeze the sample. After freezing, the electric push rod (2021) retracts, allowing the workpiece to move upward out of the low-temperature device (100). At the same time, the material hopper (2063) and the sealing plate (2051) are pushed to the right, so that the sealing plate (2051) blocks the low-temperature port. S4. When the material hopper (2063) is located below the vulcanized rubber, the vulcanized rubber is subjected to an impact test by the impact device (204). After the impact, the resulting broken samples are collected by the material hopper (2063); S5. After the initial test, the position of the clamping assembly (208) is switched, and the position is reversed before the impact test is performed again. During the test, the internal freezing temperature parameters are adjusted through the low-temperature device (100) to perform test operations at different temperatures.

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