Compound dynamic loading drilling rig drilling loading simulation test platform

Abstract

The present application relates to a kind of compound dynamic loadable drilling rig drilling loading simulation test platform, belong to test technical field, including ground fixed base, the upper surface of the ground fixed base is fixedly installed with several support cubes, the end of the support cube away from the ground fixed base is fixedly installed with fixed upper plate, the present application is combined by setting rotary loading system and push-pull loading system, can rely on the spline engagement structure of inner spline shaft and outer spline shaft Stable transmission torque, while adapting axial telescopic displacement, cooperate with thrust bearing to let rotary motion and axial thrust completely separate transmission, mutual interference, make rotary resistance and axial push-pull force can be independently controlled, synchronous application, break through the limitation that traditional equipment can only test single action alone, effectively solve the problem that rotary and axial loading are mutually separate, truly simulate the combined working condition of cutting torque and drilling pressure during drilling, substantially improve the working condition restoration degree of drilling rig power head test.

Description

Technical Field

[0001] This invention relates to the field of testing technology, specifically to a drilling rig loading simulation test platform capable of composite dynamic loading. Background Technology

[0002] The composite dynamic loading simulation test platform for drilling rigs is a device that applies resistance loading to the drilling head's rotation during drilling, and applies load to the drilling head's propulsion and extraction actions. It can also perform composite loading of the two actions to simulate a resistance state that approximates the actual working conditions.

[0003] Existing drilling rig power head loading test equipment is mostly a separate single load test device. The rotational resistance loading and axial thrust-pull force loading are independent of each other. It can only complete the static loading test of a single action and cannot simultaneously simulate the real working condition of the coupling of rotational cutting resistance and axial drilling pressure during drilling. The working condition reproduction is low.

[0004] Traditional testing devices typically place force sensors on fixed, static components, enabling them to collect only static compressive loads. They cannot track load changes during the dynamic axial movement of the power head and lack simultaneous sensing of torque, speed, and push / pull forces. This results in limited data dimensions, delayed dynamic response, and an inability to accurately reflect the true performance of the power head under combined loads. Furthermore, traditional devices have poor shaft alignment tolerance, are susceptible to measurement errors from additional off-center loading, and rely on manual adjustment for load control, making accurate simulation of dynamic variable loads difficult. Therefore, developing a drilling rig simulation testing platform with combined dynamic loading capabilities and integrated multi-dimensional sensing is of significant engineering importance for improving drilling rig testing accuracy and operational realism. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a drilling rig loading simulation test platform capable of composite dynamic loading, which solves the problems of separate rotation and axial loading, inability to synchronously simulate real drilling coupled conditions, and insufficient accuracy of dynamic load tracking and detection.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a drilling rig drilling loading simulation test platform capable of composite dynamic loading, comprising a ground fixed base, a plurality of supporting cubes fixedly installed on the upper surface of the ground fixed base, a fixed upper plate fixedly installed at the end of the supporting cubes away from the ground fixed base, an equipment mounting seat provided on the upper surface of the fixed upper plate, a rotary loading system fixedly installed on the upper surface of the equipment mounting seat, and a push-pull loading system fixedly connected to one end of the rotary loading system;

[0007] The rotary loading system includes a loading motor and a torque and speed sensor. The loading motor is fixedly connected to a flexible coupling via a motor shaft. A speed reducer is fixedly connected to the side of the flexible coupling away from the loading motor. A short connecting shaft is fixedly connected to the output end of the speed reducer.

[0008] The push-pull loading system includes a buffer rod and a push-pull force sensor. An internal spline shaft is rotatably mounted on one end of the buffer rod. An external spline shaft is slidably mounted inside the internal spline shaft. A universal joint is fixedly mounted on the end of the external spline shaft away from the internal spline shaft. A thrust bearing is fixedly connected to the end of the universal joint away from the external spline shaft.

[0009] A feed frame is fixedly installed on one side of the equipment mounting base, and a hydraulic cylinder is installed inside the feed frame.

[0010] Furthermore, a plurality of guide light bars are fixedly installed on the upper surface of the ground fixed base. The end of the guide light bar away from the ground fixed base is fixedly connected to the lower surface of the equipment mounting base. A flange assembly is fixedly installed on the upper surface of the fixed upper plate. The inside of the flange assembly is slidably connected to the outside of the guide light bars. A lifting cylinder is fixedly installed in the middle of the upper surface of the ground fixed base. The lifting end of the lifting cylinder is fixedly connected to the lower surface of the equipment mounting base. The outside of the lifting cylinder is fixedly connected to the inside of the fixed upper plate.

[0011] Furthermore, a first flexible coupling is fixedly connected to the end of the connecting short shaft away from the reducer, a small connecting shaft is fixedly connected to the side of the first flexible coupling away from the connecting short shaft, a small short shaft is fixedly connected to the end of the small connecting shaft away from the first flexible coupling, and the outer side of the small short shaft is fixedly connected to one side of the torque and speed sensor.

[0012] Furthermore, a second flexible coupling is fixedly connected to the end of the short shaft away from the connecting shaft, a second short shaft is fixedly connected to the side of the second flexible coupling away from the short shaft, and a universal joint is fixedly connected to the end of the second short shaft away from the second flexible coupling.

[0013] Furthermore, a wide support frame is rotatably mounted on the outer side of the small short shaft II, and the wide support frame is fixedly mounted on the upper surface of the equipment mounting base. The wide support frame is located between the universal joint and the small short shaft II. A short support frame is rotatably mounted on the outer side of the small short shaft II, and the short support frame is fixedly mounted on the upper surface of the equipment mounting base.

[0014] Furthermore, the end of the universal joint away from the small short shaft is fixedly connected to one end of the buffer rod. A fixed frame is rotatably mounted on one side of the thrust bearing. The push-pull force sensor is fixedly mounted on the side of the fixed frame near the thrust bearing. A slide is mounted on the lower fixed ring of the fixed frame. Several centering adjustment screws are threaded on both opposite sides of the slide. Two sets of symmetrically distributed main guide wheels are fixedly mounted on the lower surface of the slide, with several main guide wheels in each set.

[0015] Furthermore, a cross universal joint is fixedly installed on the side of the thrust bearing away from the universal joint, a shaft connecting frame is fixedly installed on the end of the cross universal joint away from the thrust bearing, and a drilling rig connecting frame is fixedly installed on the end of the feed frame away from the equipment mounting base.

[0016] Furthermore, a running cavity is provided on the upper side of the feed frame, one end of the hydraulic cylinder is fixedly installed on the inner wall of the running cavity, and a connecting plate is fixedly installed on the end of the hydraulic cylinder away from the inner wall of the running cavity. The upper surface of the connecting plate is fixedly connected to the lower side of the slide.

[0017] Furthermore, convex sliding plates are fixedly installed on both opposite sides of the feed frame, and two symmetrically distributed wear-resistant copper plates are fixedly installed on the upper surface of the feed frame. The outer side of the convex sliding plate is slidably connected to the outer side of the main guide wheel, and the lower surface of the slide block is slidably connected to the upper surface of the wear-resistant copper plate.

[0018] Furthermore, two symmetrically distributed support adjustment rods are rotatably installed on the lower side of the feed frame. A rotating rod is rotatably installed at the other end of the support adjustment rod, and a support plate is rotatably connected to both ends of the rotating rod. The support plate is fixedly installed on the upper surface of the ground fixed base.

[0019] Compared with the prior art, the present invention provides a drilling rig drilling loading simulation test platform capable of composite dynamic loading, which has the following beneficial effects:

[0020] 1. This invention, by combining a rotary loading system and a push-pull loading system, can stably transmit torque based on the spline meshing structure of the internal and external spline shafts, while adapting to axial expansion and contraction displacement. Combined with a thrust bearing, it allows the rotary motion and axial thrust to be transmitted completely separately and without interference. This enables the rotary resistance and axial push-pull force to be independently controlled and applied synchronously, breaking through the limitation of traditional equipment that can only test a single action. It effectively solves the problem of the separation of rotary and axial loading, realistically simulating the combined working condition of cutting torque and drilling pressure during drilling, and significantly improving the accuracy of the working condition reproduction in drilling rig power head testing.

[0021] 2. By setting up a rotary loading system, this invention can provide an adjustable rotary resistance torque through a loading motor, and match the speed and torque output range with a reducer to adapt to different test conditions. The torque and speed sensors connected in series in the transmission chain can collect torque and speed data in real time during the rotation process. Multiple sets of flexible couplings and universal joints can compensate for the radial deviation of the shaft system, eliminate rotational vibration, avoid additional off-center loads from interfering with the measurement results, and achieve precise control and high-precision detection of dynamic rotary loads.

[0022] 3. This invention, by setting up a push-pull loading system, can provide axial push-pull resistance through hydraulic back pressure via a hydraulic cylinder. Combined with an adjustable overflow system, the back pressure can be dynamically changed to simulate the drilling resistance of different rock formations. Push-pull force sensors evenly distributed around the thrust bearing can accurately detect axial load. The slide block slides along the convex slide plate and is guided by the main guide wheel to prevent jamming. It tracks the axial dynamic movement of the power head throughout the process, solving the defect that traditional static extrusion testing cannot adapt to dynamic feed.

[0023] 4. This invention, by setting a height adjustment structure that combines a flange assembly, a lifting cylinder, and a guide rod, allows the equipment mounting base to move up and down along the guide rod after the flange assembly is loosened, via the lifting cylinder. This adapts to drilling rigs of different heights. Locking the flange assembly achieves rigid fixed bearing. The feed frame is leveled with the support adjustment rod, and the slide position is calibrated with the centering adjustment screw, effectively reducing the difficulty of installation and centering, and improving the versatility and load coaxiality of the device. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 This is a schematic diagram of the loading motor structure of the present invention;

[0026] Figure 3 This is a schematic diagram of the ground-fixed base structure of the present invention;

[0027] Figure 4 This is a schematic diagram of the internal spline shaft structure of the present invention;

[0028] Figure 5 For the present invention Figure 4 Enlarged schematic diagram of the structure at point A in the diagram;

[0029] Figure 6 This is a schematic diagram of the speed reducer structure of the present invention;

[0030] Figure 7 This is a schematic diagram of the support adjustment rod structure of the present invention;

[0031] Figure 8 This is a schematic diagram of the shaft connecting frame structure of the present invention;

[0032] Figure 9 This is a schematic diagram of the wear-resistant copper plate structure of the present invention.

[0033] In the diagram: 1. Ground-fixed base; 11. Supporting cube; 12. Fixed upper plate;

[0034] 2. Guide light bar; 3. Equipment mounting base; 4. Flange assembly;

[0035] 6. Rotary loading system; 61. Connecting short shaft; 62. Flexible coupling one; 63. Connecting small shaft; 64. Torque and speed sensor; 65. Short support frame; 66. Wide support frame; 67. Small short shaft; 68. Flexible coupling two; 69. Small short shaft two; 610. Universal joint; 611. Loading motor; 612. Reducer; 613. Flexible coupling;

[0036] 7. Push-pull loading system; 71. Buffer rod; 72. Internal spline shaft; 73. External spline shaft; 74. Universal joint 1; 75. Thrust bearing; 76. Shaft connecting frame; 77. Support adjusting rod; 78. Rotating rod; 79. Support plate; 710. Hydraulic cylinder; 7101. Connecting plate; 711. Feed frame; 7111. Running chamber; 7112. Wear-resistant copper plate; 712. Convex slide plate; 713. Fixing frame; 714. Slide seat; 715. Main steering wheel; 716. Centering adjusting screw; 717. Cross universal joint; 751. Push-pull force sensor;

[0037] 8. Lifting cylinder; 9. Drilling rig connecting frame. Detailed Implementation

[0038] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0039] Please see Figures 1 to 9This embodiment describes a drilling rig loading simulation test platform capable of composite dynamic loading, comprising a ground-fixed base 1. The ground-fixed base 1 is fixedly installed on the ground by bolts to ensure the stability of the entire test. A lifting cylinder 8 is fixedly installed in the middle of the upper surface of the ground-fixed base 1. The lifting cylinder 8 adjusts the height of the equipment mounting base 3 by lifting, thus adapting the equipment mounting base 3 to drilling rigs of different heights, ensuring the versatility of the equipment mounting base 3. The lifting end of the lifting cylinder 8 is fixedly connected to the lower surface of the equipment mounting base 3, and the outer side of the lifting cylinder 8 is fixedly connected to the inside of the fixed upper plate 12. Next, the lifting cylinder 8 is fixedly installed on the ground fixed base 1 and the fixed upper plate 12, which can ensure that the lifting cylinder 8 can operate stably and avoid vibration during the lifting process. Several guide light bars 2 are fixedly installed on the upper surface of the ground fixed base 1. The guide light bars 2 are located at the four corners and edges of the ground fixed base 1. The end of the guide light bar 2 away from the ground fixed base 1 is fixedly connected to the lower surface of the equipment mounting seat 3. When the equipment mounting seat 3 starts to lift, the equipment mounting seat 3 can drive the guide light bars 2 to move. The guide light bars 2 can slide inside the flange assembly 4, further ensuring the stability of the movement of the equipment mounting seat 3.

[0040] Several support cubes 11 are fixedly installed on the upper surface of the ground-fixed base 1. The support cubes 11 provide support for the overall test and prevent the guide light rod 2 from being damaged due to the failure of the lifting cylinder 8. A fixed upper plate 12 is fixedly installed at the end of the support cube 11 away from the ground-fixed base 1. The fixed upper plate 12 is used to stabilize the flange assembly 4 and further stabilize the movement of the guide light rod 2. The flange assembly 4 is fixedly installed on the upper surface of the fixed upper plate 12. The flange assembly 4 includes a wedge-shaped fastening flange and a flange base. The inside of the wedge-shaped fastening flange is slidably connected to the outside of the guide light rod 2. When it is necessary to adjust the height of the equipment mounting base 3, first loosen the fastening bolts of the wedge-shaped fastening flange and the flange base to ensure that the guide light rod 2 can slide between the wedge-shaped fastening flange and the flange base. When the height of the equipment mounting base 3 is adjusted, the guide light rod 2 can slide between the wedge-shaped fastening flange and the flange base. Then, the wedge-shaped fastening flange and the fastening bolts of the flange base are tightened. The wedge-shaped fastening flange can hold the guide light bar 2 for fixation, thereby achieving the purpose of structural stability and load bearing. The flange assembly 4 is slidably connected to the outside of the guide light bar 2. The upper surface of the fixed upper plate 12 is provided with an equipment mounting seat 3. A feed frame 711 is fixedly installed on one side of the equipment mounting seat 3. The feed frame 711 can provide support for the feed and rotation of the drilling rig during testing, and also provide support for the operation of the hydraulic cylinder 710. Two symmetrically distributed support adjustment rods 77 are rotatably installed on the lower side of the feed frame 711. The ground fixed base 1 is connected to the feed frame 711 through the support adjustment rods 77. The length of the support adjustment rods 77 can be adjusted through the thread structure, thereby leveling the feed frame 711 and forming a triangular support structure to support the feed frame 711 to achieve a stable effect.

[0041] A rotating rod 78 is rotatably mounted on the other end of the support adjustment rod 77. Support plates 79 are rotatably connected to both ends of the rotating rod 78. The support plates 79 provide support for the support adjustment rod 77. The support plates 79 are fixedly mounted on the upper surface of the ground-fixed base 1. Convex sliding plates 712 are fixedly mounted on both opposite sides of the feed frame 711. The lower side of the feed frame 711 is adapted to the convex sliding plate 712. The outer side of the convex sliding plate 712 is slidably connected to the outer side of the guide wheel 715. Therefore, when the slide 714 slides, the guide wheel 715 begins to move. Simultaneously, the guide wheel 715 slides on the convex sliding plate 712 and rotates, thereby providing support for the slide 714. 4 provides a guiding effect, and the rotation of the main guide wheel 715 can effectively prevent the slide 714 from getting stuck during movement. The convex slide plate 712 can restrain the slide 714 and prevent the slide 714 from falling off during movement. Two symmetrically distributed wear-resistant copper plates 7112 are fixedly installed on the upper surface of the feed frame 711. The wear-resistant copper plates 7112 can reduce resistance and play a wear-resistant role when the slide 714 slides on the convex slide plate 712. The feed frame 711 has a running cavity 7111 on the upper side. The running cavity 7111 can ensure the operation of the hydraulic cylinder 710 and save test space.

[0042] A drilling rig connection frame 9 is fixedly installed at the end of the feed frame 711 away from the equipment mounting base 3. The drilling rig connection frame 9 connects the drilling rig to the test loading simulation equipment of this application, making the drilling rig and the test loading simulation equipment an integrated unit. It converts the interaction force between the drilling rig and the test loading simulation equipment placed on the ground into an internal interaction force. The feed frame 711 is equipped with a hydraulic cylinder 710, which can convert hydraulic pressure into resistance to the linear motion of the slide block 714. The hydraulic cylinder 710 is also compatible with a hydraulic loading device, an electric loading device, and a display device. The hydraulic loading device mainly drives the hydraulic cylinder 710 through a hydraulic pump, providing a certain pressure of hydraulic oil back pressure. The hydraulic loading device system is equipped with an adjustable overflow system. By dynamically adjusting the overflow system, different propulsion resistances are simulated. The hydraulic loading device provides a powerful output from the hydraulic cylinder 710, but the macroscopic movement of the mechanical structure can only accompany the load. The test equipment moves in the direction of motion, and the axial force transmitted internally is measured and obtained by the push-pull force sensor 751. The electric loading device provides simulated resistance to the rotational motion by adjusting the loading motor 611 on the platform. Macroscopically, the rotation of the loading motor 611 is driven by the reverse rotation of the loading equipment, and after reaching a certain power, it generates electricity. In this way, the test loading simulation equipment not only provides resistance to do work, but also generates electricity to feed back to the main circuit. The main circuit is controlled by the control box, and the display device displays the values ​​measured by all sensors and forms a dynamic curve for recording. The hydraulic pump, control box, and display device are existing technologies and will not be described in detail here and are not shown in the figure. One end of the oil cylinder 710 is fixedly installed on the inner wall of the running cavity 7111, and the end of the oil cylinder 710 away from the inner wall of the running cavity 7111 is fixedly installed with a connecting plate 7101. The upper surface of the connecting plate 7101 is fixedly connected to the lower side of the slide 714.

[0043] A rotary loading system 6 is fixedly mounted on the upper surface of the equipment mounting base 3. A push-pull loading system 7 is fixedly connected to one end of the rotary loading system 6. The push-pull loading system 7 includes a buffer rod 71 and a push-pull force sensor 751. One side of the push-pull force sensor 751 is fixedly mounted on the side of the mounting bracket 713 near the thrust bearing 75. An internal spline shaft 72 is rotatably mounted on one end of the buffer rod 71. One end of a universal joint 717 is connected to the drilling rig via a shaft connecting bracket 76, and the other end is connected to a drive spindle. The drive spindle is rotatably mounted inside the thrust bearing 75, and the other end of the drive spindle is connected to a universal joint 74. The transmission spindle is fixedly connected to the thrust bearing 75. This fixed connection is a relative fixed connection. The universal joint 717, thrust bearing 75, transmission spindle, universal joint 74, fixed frame 713, and slide 714 are used to compensate for axial deviation and swing during the rotary transmission process. The thrust bearing 75 has three push-pull force sensors 751 arranged in a circular array. The other end of the push-pull force sensor 751 is connected to the fixed frame 713, so that the rotary motion can be transmitted through the transmission spindle, and the axial push-pull force can be applied to the push-pull force sensor 751 and the fixed frame 713.

[0044] An external spline shaft 73 is slidably mounted inside the internal spline shaft 72. The external spline shaft 73 and the internal spline shaft 72 are adapted to each other and can transmit torque during rotation. During axial displacement, the external spline shaft 73 and the internal spline shaft 72 can extend and retract to match the axial dynamic movement without affecting the transmission of torque. A universal joint 74 is fixedly mounted on the end of the external spline shaft 73 away from the internal spline shaft 72. A thrust bearing 75 is fixedly connected to the end of the universal joint 74 away from the external spline shaft 73. A cross universal joint 717 is fixedly mounted on the side of the thrust bearing 75 away from the universal joint 74.

[0045] A shaft connecting bracket 76 is fixedly installed at the end of the universal joint 717 away from the thrust bearing 75. The shaft connecting bracket 76 is fixedly connected to the drilling rig by bolts. A fixed bracket 713 is rotatably installed on one side of the thrust bearing 75. The fixed bracket 713 can provide support for the detected axial displacement and rotation. A slide 714 is installed on the lower fixed ring of the fixed bracket 713. The lower surface of the slide 714 is slidably connected to the upper surface of the wear-resistant copper plate 7112. The sliding of the slide 714 can simulate the feed effect of the drilling rig.

[0046] On opposite sides of the slide 714, several centering adjusting screws 716 are threadedly installed. The centering adjusting screws 716 are used to adjust the distance between the slide 714, the main guide roller 715, the feed frame 711, and the convex slide plate 712 by rotating. Two sets of symmetrically distributed main guide rollers 715 are fixedly installed on the lower surface of the slide 714, and each set of main guide rollers 715 consists of several.

[0047] The rotary loading system 6 includes a loading motor 611 and a torque and speed sensor 64. The loading motor 611 provides simulated resistance to the rotary motion of the drilling rig. The loading motor 611 is fixedly connected to a flexible coupling 613 via a motor shaft. A reducer 612 is fixedly connected to the side of the flexible coupling 613 away from the loading motor 611. A connecting short shaft 61 is fixedly connected to the output end of the reducer 612. A first flexible coupling 62 is fixedly connected to the end of the first flexible coupling 62 away from the connecting short shaft 61. A small connecting shaft 63 is fixedly connected to the side of the first flexible coupling 62 away from the connecting short shaft 61.

[0048] A short shaft 67 is fixedly connected to the end of the connecting shaft 63 away from the first flexible coupling 62. A short support frame 65 is rotatably mounted on the outside of the short shaft 67. The short support frame 65 is fixedly mounted on the upper surface of the equipment mounting base 3. A second flexible coupling 68 is fixedly connected to the end of the short shaft 67 away from the connecting shaft 63. A second short shaft 69 is fixedly connected to the side of the second flexible coupling 68 away from the short shaft 67. A wide support frame 66 is rotatably mounted on the outside of the second short shaft 69. The wide support frame 66 is fixedly mounted on the upper surface of the equipment mounting base 3. The wide support frame 66 is located between the universal joint 610 and the second short shaft 69. A universal joint 610 is fixedly connected to the end of the second short shaft 69 away from the second flexible coupling 68. The end of the universal joint 610 away from the second short shaft 69 is fixedly connected to one end of the buffer short rod 71. The outside of the short shaft 67 is fixedly connected to one side of the torque and speed sensor 64.

[0049] Among them, the functions of flexible coupling 62, flexible coupling 68, and flexible coupling 613 are all to compensate for the radial deviation of the shaft and eliminate vibration or adverse factors affecting the rotary transmission during the rotation process.

[0050] The working principle of the above embodiment is as follows: Before the test begins, the fastening bolts of the flange assembly 4 are loosened. The lifting cylinder 8 drives the equipment mounting seat 3 to rise and fall along the guide light bar 2 to adjust the height. After adapting to the height of the drill rig under test, the flange assembly 4 is locked so that the wedge fastening flange hugs the guide light bar 2 to achieve the purpose of structural stability and load bearing. The drill rig body is connected and fixed to the test platform through the drill rig connecting frame 9. The output end of the drill rig power head is connected to the push-pull loading system 7 through the shaft connecting frame 76 to complete the test preparation.

[0051] During test operation, the drill rig power head is started and outputs rotary motion and axial feed action simultaneously. The rotary motion is transmitted to the outer spline shaft 73 and inner spline shaft 72 via the shaft connecting frame 76, universal joint 717, transmission mandrel, and universal joint 74. It is then transmitted to the rotary loading system 6 via the buffer short rod 71. After the speed and torque are matched by the reducer 612, the reverse resistance torque is output to simulate the reverse torque of rock cutting. The loading motor 611 is driven in the reverse direction. The torque and speed sensor 64 in the transmission chain collects the torque and speed data in real time during the rotary process. Multiple sets of flexible couplings 613, flexible coupling 62, flexible coupling 68 and universal joint 610 can compensate for the radial deviation of the shaft system and eliminate rotary vibration. The short support frame 65 and the wide support frame 66 provide support for the rotary shaft system.

[0052] The axial feed action pushes the slide block 714 to slide along the convex slide plate 712 on the feed frame 711. The main guide wheel 715 moves with the slide block 714 and rotates to achieve guidance and anti-jamming. The wear-resistant copper plate 7112 reduces sliding friction and improves wear life. The hydraulic cylinder 710 in the running cavity 7111 provides reverse axial resistance through hydraulic back pressure. The axial push and pull force is transmitted to the push and pull force sensor 751 through the thrust bearing 75 to complete the accurate detection of axial force. The torque is continuously transmitted during the axial displacement process when the external spline shaft 73 and the internal spline shaft 72 are matched by the extension and retraction. The rotational resistance and axial resistance are applied synchronously and controlled independently to realize the composite dynamic loading simulation of drilling. The data collected by all sensors are synchronously transmitted to the display device to generate dynamic load curves and complete the recording.

[0053] After the test, the drill rig's power head stops operating, and the loading motor 611 and hydraulic cylinder 710 are gradually unloaded. Once the load is completely zero, the connection between the drill rig and the test platform can be disconnected to complete the test. Alternatively, the loading parameters can be adjusted before proceeding to the next set of tests.

[0054] The installation, connection, or setting methods disclosed in this embodiment are all common mechanical connection methods. Any method that can achieve its beneficial effect can be implemented. In addition, the electrical components in this embodiment are all electrically connected to the main controller and the power supply. The main controller can be a conventional known device such as a computer that plays a control role. Those skilled in the art can control the electrical components through simple programming. Moreover, the existing disclosed power connection technology is also common knowledge in the field. Therefore, the specific structural composition and working principle will not be described in detail in this embodiment.

Claims

1. A drilling rig loading simulation test platform capable of composite dynamic loading, comprising a ground-fixed base (1), characterized in that: A plurality of supporting cubes (11) are fixedly installed on the upper surface of the ground fixed base (1). A fixed upper plate (12) is fixedly installed on the end of the supporting cube (11) away from the ground fixed base (1). An equipment mounting seat (3) is provided on the upper surface of the fixed upper plate (12). A rotary loading system (6) is fixedly installed on the upper surface of the equipment mounting seat (3). A push-pull loading system (7) is fixedly connected to one end of the rotary loading system (6). The rotary loading system (6) includes a loading motor (611) and a torque and speed sensor (64). The loading motor (611) is fixedly connected to a flexible coupling (613) via a motor shaft. A reducer (612) is fixedly connected to the side of the flexible coupling (613) away from the loading motor (611). A connecting short shaft (61) is fixedly connected to the output end of the reducer (612). The push-pull loading system (7) includes a buffer rod (71) and a push-pull force sensor (751). An inner spline shaft (72) is rotatably mounted on one end of the buffer rod (71). An outer spline shaft (73) is slidably mounted inside the inner spline shaft (72). A universal joint (74) is fixedly mounted on the end of the outer spline shaft (73) away from the inner spline shaft (72). A thrust bearing (75) is fixedly connected to the end of the universal joint (74) away from the outer spline shaft (73). A feed frame (711) is fixedly installed on one side of the equipment mounting base (3), and an oil cylinder (710) is provided inside the feed frame (711).

2. The drilling rig loading simulation test platform with composite dynamic loading capability according to claim 1, characterized in that: A plurality of guide light bars (2) are fixedly installed on the upper surface of the ground fixed base (1). The end of the guide light bar (2) away from the ground fixed base (1) is fixedly connected to the lower surface of the equipment mounting base (3). A flange assembly (4) is fixedly installed on the upper surface of the fixed upper plate (12). The inside of the flange assembly (4) is slidably connected to the outside of the guide light bar (2). A lifting cylinder (8) is fixedly installed in the middle of the upper surface of the ground fixed base (1). The lifting end of the lifting cylinder (8) is fixedly connected to the lower surface of the equipment mounting base (3). The outside of the lifting cylinder (8) is fixedly connected to the inside of the fixed upper plate (12).

3. The drilling rig loading simulation test platform with composite dynamic loading capability according to claim 1, characterized in that: The end of the connecting short shaft (61) away from the reducer (612) is fixedly connected to a first flexible coupling (62). The side of the first flexible coupling (62) away from the connecting short shaft (61) is fixedly connected to a small connecting shaft (63). The end of the small connecting shaft (63) away from the first flexible coupling (62) is fixedly connected to a small short shaft (67). The outer side of the small short shaft (67) is fixedly connected to one side of the torque and speed sensor (64).

4. The drilling rig loading simulation test platform with composite dynamic loading capability according to claim 3, characterized in that: The end of the short shaft (67) away from the connecting shaft (63) is fixedly connected to a second flexible coupling (68), the side of the second flexible coupling (68) away from the short shaft (67) is fixedly connected to a second short shaft (69), and the end of the second short shaft (69) away from the second flexible coupling (68) is fixedly connected to a universal joint (610).

5. The drilling rig loading simulation test platform with composite dynamic loading capability according to claim 4, characterized in that: A wide support frame (66) is rotatably mounted on the outer side of the small short shaft (69). The wide support frame (66) is fixedly mounted on the upper surface of the equipment mounting base (3). The wide support frame (66) is located between the universal joint (610) and the small short shaft (69). A short support frame (65) is rotatably mounted on the outer side of the small short shaft (67). The short support frame (65) is fixedly mounted on the upper surface of the equipment mounting base (3).

6. The drilling rig loading simulation test platform with composite dynamic loading capability according to claim 4, characterized in that: The end of the universal joint (610) away from the small short shaft (69) is fixedly connected to one end of the buffer rod (71). A fixed frame (713) is rotatably installed on one side of the thrust bearing (75). The push-pull force sensor (751) is fixedly installed on one side of the fixed frame (713) near the thrust bearing (75). A slide (714) is installed on the lower fixed ring of the fixed frame (713). Several centering adjustment screws (716) are threaded on both opposite sides of the slide (714). Two sets of symmetrically distributed main guide wheels (715) are fixedly installed on the lower surface of the slide (714). Each set of main guide wheels (715) consists of several wheels.

7. The drilling rig loading simulation test platform with composite dynamic loading capability according to claim 1, characterized in that: A cross universal joint (717) is fixedly installed on the side of the thrust bearing (75) away from the universal joint (74). A shaft connecting frame (76) is fixedly installed on the end of the universal joint (717) away from the thrust bearing (75). A drilling rig connecting frame (9) is fixedly installed on the end of the feed frame (711) away from the equipment mounting base (3).

8. The drilling rig loading simulation test platform with composite dynamic loading capability according to claim 6, characterized in that: The feed frame (711) has a running cavity (7111) on its upper side. One end of the oil cylinder (710) is fixedly installed on the inner wall of the running cavity (7111). A connecting plate (7101) is fixedly installed on the end of the oil cylinder (710) away from the inner wall of the running cavity (7111). The upper surface of the connecting plate (7101) is fixedly connected to the lower side of the slide (714).

9. A drilling rig drilling loading simulation test platform capable of composite dynamic loading according to claim 6, characterized in that: The feed frame (711) has convex slide plates (712) fixedly installed on both opposite sides. Two wear-resistant copper plates (7112) are fixedly installed on the upper surface of the feed frame (711). The outer side of the convex slide plate (712) is slidably connected to the outer side of the main guide wheel (715). The lower surface of the slide block (714) is slidably connected to the upper surface of the wear-resistant copper plate (7112).

10. A drilling rig loading simulation test platform capable of composite dynamic loading according to claim 1, characterized in that: Two symmetrically distributed support adjustment rods (77) are rotatably installed on the lower side of the feed frame (711). A rotating rod (78) is rotatably installed on the other end of the support adjustment rod (77). Support plates (79) are rotatably connected to both ends of the rotating rod (78). The support plates (79) are fixedly installed on the upper surface of the ground fixed base (1).

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