Static loading device of vertical hydrostatic pressure rotary table

Abstract

The utility model relates to the technical field of hydrostatic pressure rotary table experiments, in particular to a vertical hydrostatic pressure rotary table static loading device which comprises a fixing assembly, a center rod assembly, an auxiliary assembly, a connecting assembly, a beam assembly and a hydrostatic pressure rotary table. The fixing assembly is used as an experiment bearing device; the center rod assembly is used for applying a load in an experiment and feeding back the size of the load borne by the workbench; the auxiliary assembly is used for bearing the reverse acting force of the loading spring and preventing the center rod from eccentricity; the connecting assembly comprises four connecting rods which are respectively connected with the auxiliary rod assembly and the central rod assembly; and the cross beam assembly comprises four cross beams which are respectively connected with the auxiliary rod assembly. Aiming at the defects of the existing method, the utility model provides a static loading device which is applied to a vertical hydrostatic pressure rotary table, can accurately control the magnitude of loading force and can continuously change loading. And the cost is reduced while the continuous and controllable loading efficiency of the static experiment of the hydrostatic pressure turntable is ensured.

Description

Technical Field

[0001] This utility model relates to the field of liquid hydrostatic turntable experimental technology, specifically to a static loading device for a vertical liquid hydrostatic turntable. Background Technology

[0002] When a hydrostatic rotary table is in operation, a pump supplies pressurized oil to fill the space between the upper and lower guide rails, forming a lubricating film. This fluid friction significantly reduces frictional resistance during operation. Fluid friction also effectively ensures consistent clearances throughout the guide rails, mitigating errors generated during guide rail surface machining. Therefore, hydrostatic rotary tables offer better stability and precision compared to traditional rotary tables. Applying hydrostatic rotary tables not only improves machine performance and reduces wear, but also significantly enhances machining accuracy and stability, thereby improving product quality and production efficiency.

[0003] Researchers are dedicated to optimizing structural design, improving computational accuracy, and exploring new application materials to further enhance the performance of hydrostatic turntables. The design and development of hydrostatic turntables necessitates experimental testing of their static performance. Currently, two commonly used experimental loading methods exist: calibration weight loading and...

[0004] Hydraulic cylinder loading is an option, but while the principle of calibrating the load is simple, it can only achieve intermittent loading based on the mass of the object. Furthermore, the clamping process is cumbersome and can easily lead to load eccentricity. Although hydraulic cylinder loading can achieve continuously varying loads, it requires a hydraulic system, which complicates the experimental scheme and makes maintenance somewhat difficult, increasing both time and economic costs. Utility Model Content

[0005] This invention addresses the shortcomings of existing methods by proposing a static loading device for vertical hydrostatic turntables, enabling precise control of the loading force and continuous variation of the loading. This reduces costs while ensuring continuous and controllable loading efficiency in static experiments on hydrostatic turntables.

[0006] This utility model is achieved through the following technical solution:

[0007] A vertical hydrostatic turntable static loading device includes a fixed assembly, a central rod assembly, an auxiliary assembly, a connecting assembly, a crossbeam assembly, and a hydrostatic turntable. The fixed assembly serves as the experimental support device, including the experimental platform and a T-block; the central rod assembly is used to apply loads and provide feedback on the load on the platform during the experiment, including a central locking assembly, a central connecting block, a loading nut assembly, a loading spring assembly, a sensor assembly, and a central rod; the auxiliary assembly is used to bear the reverse force of the loading spring and prevent the central rod from becoming eccentric, comprising four sets of auxiliary rod assemblies, each consisting of an auxiliary locking nut assembly, an auxiliary connecting block, a buffer spring assembly, an auxiliary pad, and an auxiliary rod; the connecting assembly includes four connecting rods that connect the auxiliary rod assemblies and the central rod assembly respectively; the crossbeam assembly includes four crossbeams that connect the auxiliary rod assemblies respectively; the hydrostatic turntable is the application object of this device.

[0008] Furthermore, the central locking assembly includes a locking nut, a locking washer, and a locking ring; the loading nut assembly includes a loading nut and a handle; the loading spring assembly includes a loading spring, a loading spring sleeve, and a loading spring pressure plate; the sensor assembly includes a through-shaft pressure sensor, a sensor screw, a data cable, and an intermediate transition plate; the auxiliary locking nut assembly includes an auxiliary locking nut and an auxiliary washer; and the buffer spring assembly includes a buffer spring pressure plate, a buffer spring, and a buffer spring sleeve.

[0009] Furthermore, the experimental platform has a T-slot, the locking nut has a threaded through hole at its axial center, the locking washer has a central through hole at its axial center, the central connecting block has a central through hole and a central threaded through hole in three vertical directions, the loading nut has a threaded through hole at its axial center and four threaded holes evenly distributed around its circumference, the small end of the handle has an external thread, the loading spring pressure plate has a central through hole at its axial center, the through-shaft pressure sensor has a through hole at its axial center and four threaded holes evenly distributed on its bottom surface, the auxiliary locking nut has a threaded through hole at its axial center, the auxiliary washer has a central through hole at its axial center, the auxiliary connecting block has a central through hole and a central threaded through hole in three vertical directions, the buffer spring pressure plate has a threaded through hole at its axial center, the auxiliary pad has a central through hole at its axial center and threaded holes on its side, the connecting rod has threads on its minor diameter at both ends, the crossbeam has threads on its minor diameter at both ends, and the turntable has a central hole on its working surface.

[0010] The aforementioned static loading device for a vertical hydrostatic turntable proposes a manually controllable and continuously variable loading method for use on a vertical hydrostatic turntable. This device reduces costs while ensuring continuous and controllable loading efficiency in static experiments on the hydrostatic turntable. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the static loading device for the vertical liquid hydrostatic turntable described in this utility model.

[0012] Figure 2 This is a front view schematic diagram of the vertical liquid hydrostatic turntable static loading device described in this utility model;

[0013] Figure 3 This is a schematic diagram of the central rod assembly structure described in this utility model;

[0014] Figure 4 This is a schematic diagram of the auxiliary rod assembly structure described in this utility model;

[0015] In the diagram: 1 is the fixed component, 2 is the central rod assembly, 3, 4, 5, and 6 are auxiliary rod assemblies, 7 is the connecting component, 8 is the crossbeam assembly, and 9 is the vertical hydrostatic turntable; 21 is the central locking assembly, 23 is the loading nut assembly, 24 is the loading spring assembly, 25 is the sensor assembly, 31 is the auxiliary locking nut assembly, and 33 is the buffer spring assembly; 101 is the experimental platform, 102 is the T-block, 211 is the locking nut, 212 is the locking washer, 213 is the locking ring, 202 is the central connecting block, 231 is the loading nut, 232 is the loading handle, and 241 is the loading spring. 242 is the loading spring sleeve, 243 is the loading spring pressure plate, 251 is the through-shaft pressure sensor, 252 is the sensor screw, 253 is the data cable, 254 is the intermediate transition plate, 206 is the center rod, 311 is the auxiliary locking nut, 312 is the auxiliary washer, 313 is the upper locking ring, 314 is the lower locking ring, 302 is the auxiliary connecting block, 331 is the buffer spring pressure plate, 332 is the buffer spring, 333 is the buffer spring sleeve, 304 is the auxiliary pad, 305 is the auxiliary rod, 701, 702, 703, and 704 are connecting rods, 801, 802, and 80... 3. 804 is the crossbeam; 1011 is the T-slot; 2111 is the threaded hole of the lock nut; 2121 is the inner hole of the lock washer; 2131 is the threaded hole of the locking ring; 2021 is the center through hole of the center connecting block; 2022 and 2023 are the threaded through holes of the center connecting block; 2311 is the center threaded hole of the loading nut; 2312 is the circumferential threaded hole of the loading nut; 2321 is the thread of the loading handle; 2431 is the through hole of the loading spring pressure plate; 2511 is the inner hole of the sensor; 2512 is the threaded hole of the sensor; 2541 is the stop of the transition plate; 2542 is the center hole of the transition plate; 2543 is the... The outer circle of the transition plate has the following holes: 3111 is the auxiliary nut threaded hole, 3121 is the auxiliary washer inner hole, 3131 is the upper locking ring threaded hole, 3141 is the lower locking ring threaded hole, 3021 is the auxiliary connecting block through hole, 3022 is the auxiliary connecting block threaded hole, 3311 is the buffer spring pressure plate threaded through hole, 3041 is the auxiliary pad through hole, 3042 is the auxiliary pad threaded hole, 7011, 7012, 7013, and 7014 are the connecting rod minor diameter threads, 8011, 8012, 8013, and 8014 are the crossbeam minor diameter threads, and 9001 is the center hole of the vertical hydrostatic turntable. Detailed Implementation

[0016] The static loading device for the vertical liquid hydrostatic turntable described in this utility model will now be described in detail with reference to the accompanying drawings.

[0017] like Figures 1 to 4 The static loading device for the vertical hydrostatic turntable shown is as follows: 1 is a fixed component, 2 is a central rod assembly, 3, 4, 5, and 6 are auxiliary rod assemblies, 7 is a connecting rod assembly, 8 is a crossbeam assembly, and 9 is the vertical hydrostatic turntable.

[0018] The lower surface of the T-block 102 is located on the T-slot 1011 of the experimental table. The T-block is connected to the auxiliary rod 305 through a threaded hole. The auxiliary rod passes through the auxiliary pad through hole 3041, the lower locking ring threaded hole 3141, the upper locking ring threaded hole 3131, the auxiliary connecting block center through hole 3021, the buffer spring inner hole, the buffer spring pressure plate threaded hole 3311, the auxiliary washer inner hole 3121, and the auxiliary locking nut threaded hole 3111 in sequence. The lower surface of the auxiliary pad 304 is flush with the upper surface of the experimental table 101. The upper surface of the auxiliary pad block contacts the lower surface of the lower locking ring 314. The upper locking ring 313 is located above the lower locking ring. The lower surface of the auxiliary connecting block 302 contacts the upper surface of the upper locking ring. The buffer spring sleeve 333 is fixedly connected to the lower surface of the buffer spring pressure plate 331. One end of the buffer spring 332 is fixedly connected to the lower surface of the buffer spring pressure plate, and the other end contacts the upper surface of the auxiliary connecting block. The auxiliary locking nut 311 is located above 331, and there is an auxiliary washer 312 separating them in the middle.

[0019] The outer circle 2543 of the intermediate transition plate extends into the center hole 9001 of the platform. One end of the central rod 206 extends into the center hole 2542 of the intermediate transition plate, and the other end passes through the inner hole 2511 of the through-shaft pressure sensor, the through hole 2431 of the loading spring pressure plate, the center threaded hole 2311 of the loading nut, the threaded hole 2131 of the locking ring, the through hole 2021 of the central connecting block, the inner hole 2121 of the locking washer, and the threaded hole 2111 of the locking nut. The outer circle of the through-shaft pressure sensor extends into the stop 2541 of the central transition plate, and the threaded hole 2512 is connected to the intermediate transition plate by a screw 252. The loading spring pressure plate 243 is located above the through-shaft pressure sensor 251, and the outer circle of the pressure plate extends into the inner hole of the intermediate transition plate. Spring sleeve 242 is fixedly connected to the upper surface of loading spring pressure plate 243. One end of loading spring 241 is fixedly connected to the upper surface of loading spring pressure plate. Loading nut 231 is located above loading spring. Handle 232 is connected to loading nut through threaded hole 2312. Locking ring 213 is located above loading nut. The upper surface of locking ring contacts the lower surface of center connecting block 202. Locking nut 211 is located above center connecting block. Locking washer 212 separates the two ends of the connecting rod 701 through threaded holes to center connecting block 202 and auxiliary connecting block 302 respectively. Crossbeam 801 is connected to auxiliary rod assembly 3 and auxiliary rod assembly 4 through threaded holes at both ends respectively.

[0020] In this embodiment, the outer circle of the bottom surface of the through-shaft pressure sensor 251 in the center rod assembly is placed into the stop of the intermediate transition plate 254, and the two are connected by sensor screws. The outer circle of the intermediate transition plate is placed into the center hole of the turntable 9. One end of the center rod is inserted into the center hole 2542 of the intermediate transition plate. The loading spring assembly 24, the loading nut assembly 23, the locking ring 213, the center connecting block 202, the locking washer 212, and the locking nut 211 are sequentially installed above the through-shaft pressure sensor.

[0021] The threaded holes 3042 of the auxiliary pads are connected to each other through the crossbeam assembly. One end of the auxiliary rod 305 passes through the through hole 3041 of the auxiliary pad and connects to the threaded hole of the T-block. The lower locking ring 314 and the upper locking ring 313 are installed in sequence above the auxiliary pads. The auxiliary connecting block 302, the buffer spring assembly 33, the auxiliary washer 312, and the auxiliary locking nut 311 are installed above the upper locking ring.

[0022] Adjust the position of the auxiliary rod assembly by sliding the auxiliary pad and T-block. Connect the threaded holes 2022 and 2023 of the center connecting block to the threaded holes of the auxiliary connecting block through the connecting rod assembly. Tighten the lower locking ring to press the auxiliary pad onto the surface of the worktable and fix the position of the auxiliary rod assembly.

[0023] In the initial state, adjust the position of the loading nut of the center rod assembly so that its lower surface only contacts the upper surface of the loading spring. The loading spring is in a vertical and natural position and is not under pressure. Similarly, adjust the position of the upper locking ring of the auxiliary rod assembly so that it only contacts the lower surface of the auxiliary connecting block. Adjust the buffer spring pressure plate, auxiliary washer and auxiliary locking nut to make the buffer spring contract. The auxiliary connecting block is subjected to a certain pressure. At this time, one end of the center rod extends into the center hole of the intermediate transition plate and can fall down naturally.

[0024] During the test, the loading nut is adjusted by the loading handle to compress the loading spring. The spring force is applied to the sensor and the intermediate transition plate through the pressure plate and then transmitted to the worktable. The actual load transmitted to the worktable can be obtained through the working surface of the through-shaft pressure sensor and fed back to the digital display device by the sensor data cable.

[0025] In this embodiment, the load on the worktable at the current position can be accurately obtained by receiving real-time feedback from the data cable of the through-shaft pressure sensor 251 via a digital display device. This allows for accurate and continuous application of varying loads manually, reducing costs and significantly improving the efficiency of static loading tests.

[0026] In this embodiment, the intermediate transition plate has a central hole 2542 for guiding and positioning. The auxiliary rod assembly fixes the central connecting block through the connecting rod. One end of the central rod 206 cooperates with the central hole 2542 to limit the displacement of the central rod assembly to occur in the axial direction, so as to ensure that the sensor measurement result is the same as the load received by the worktable.

[0027] In this embodiment, the spring reaction force is transmitted to each auxiliary rod assembly via the connecting rod assembly, avoiding interference from the internal forces of the integrated measuring device and obtaining more accurate measurement results. The load is transmitted to the auxiliary rod assembly by the buffer spring, avoiding rod deformation that may occur when the rigid structure transmits the load, thus improving the structural reliability and operational stability of the device.

[0028] In this embodiment, the length and width dimensions of the T-block 102 can be adjusted to correspond to different length and width dimensions by adjusting the position of the T-block 102, the thread insertion depth of the crossbeam assembly 8 and the connecting rod assembly 7, and the height dimensions can be adjusted to correspond to different height dimensions by adjusting the position of the locking ring 213 of the center rod assembly and the locking ring 313 on the auxiliary rod. The spatial dimensions can be adjusted according to the application object so that the device can be used for experimental loading of various liquid hydrostatic turntables with different structural dimensions.

[0029] In the description of this utility model, the terms "upper", "lower", "side", "axial", "circumferential", "bottom", "one end", etc., indicate the positional relationship based on the accompanying drawings. This is for the convenience of describing the embodiment of this example and does not imply that the components must be constructed or operated in a specific orientation, nor is it intended to limit the utility model.

[0030] In the description of this utility model, the term "connection" should be interpreted broadly, and can refer to a fixed connection or an integral connection, a direct connection or an indirect connection, a mechanical connection or a non-mechanical connection. Those skilled in the art can understand the specific meaning of this term in this utility model according to the specific circumstances.

Claims

1. A vertical hydrostatic turntable static loading device, characterized in that: The loading device includes a fixing assembly, a center rod assembly, an auxiliary assembly, a connecting assembly, and a crossbeam assembly; The fixed components include the experimental platform and the T-block; the central rod assembly includes the central locking assembly, the central connecting block, the loading nut assembly, the loading spring assembly, the sensor assembly, and the central rod; the auxiliary components include four sets of auxiliary locking nut assemblies, auxiliary connecting blocks, buffer spring assemblies, auxiliary pads, and auxiliary rods; the connecting assembly includes four connecting rods; and the crossbeam assembly includes four crossbeams. The central locking assembly includes a locking nut, a locking washer, and a locking ring; the loading nut assembly includes a loading nut and a handle; the loading spring assembly includes a loading spring, a loading spring sleeve, and a loading spring pressure plate; the sensor assembly includes a through-shaft pressure sensor, a sensor screw, a data cable, and an intermediate transition plate; the auxiliary locking nut assembly includes an auxiliary locking nut and an auxiliary washer; and the buffer spring assembly includes a buffer spring pressure plate, a buffer spring, and a buffer spring sleeve.

2. The vertical hydrostatic turntable static loading device according to claim 1, characterized in that: The experimental platform has a T-slot. The locking nut has a threaded through hole in its axial center. The locking washer has a central through hole in its axial direction. The central connecting block has a central through hole and a central threaded through hole in three vertical directions. The loading nut has a threaded through hole in its axial center and four threaded holes evenly distributed in its circumference. The small end of the handle has an external thread. The loading spring pressure plate has a central through hole in its axial direction. The through-shaft pressure sensor has a through hole in its axial direction and four threaded holes evenly distributed on its bottom surface. The auxiliary locking nut has a threaded through hole in its axial direction. The auxiliary washer has a central through hole in its axial direction. The auxiliary connecting block has a central through hole and a central threaded hole in three vertical directions. The buffer spring pressure plate has a threaded through hole in its axial direction. The auxiliary pad has a central through hole in its axial direction and threaded holes on its side. The connecting rod has threads on its minor diameter at both ends. The crossbeam has threads on its minor diameter at both ends.

3. A vertical hydrostatic turntable static loading device according to claim 1 or 2, characterized in that: The T-block is located in the T-slot of the experimental table. The T-block is connected to the auxiliary rod through a threaded hole. The auxiliary rod passes through the through hole of the auxiliary pad block, the threaded hole of the lower locking ring, the threaded hole of the upper locking ring, the central through hole of the auxiliary connecting block, the inner hole of the buffer spring, the threaded hole of the buffer spring pressure plate, the inner hole of the auxiliary washer, and the threaded hole of the auxiliary locking nut in sequence.

4. A vertical hydrostatic turntable static loading device according to claim 1 or 2, characterized in that: One end of the central rod extends into the central hole of the intermediate transition plate, and the other end passes sequentially through the inner hole of the through-shaft pressure sensor, the through hole of the loading spring pressure plate, the central threaded hole of the loading nut, the threaded hole of the locking ring, the through hole of the central connecting block, the inner hole of the locking washer, and the threaded hole of the locking nut.

5. A vertical hydrostatic turntable static loading device according to claim 1 or 2, characterized in that: The two ends of the connecting rod are respectively connected to the threaded holes of the central connecting block and the auxiliary connecting block, and the two ends of the crossbeam are respectively connected to the threaded holes of the auxiliary pads of different auxiliary rod assemblies.

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