Base system of hydraulic drive compressor and leveling method of base system

Abstract

The invention provides a base system of a hydraulic drive compressor and a leveling method of the base system. The base system comprises a support top plate, a coarse adjustment assembly, a fine adjustment assembly and a driving assembly, and the support top plate supports a hydraulic drive compressor body; the coarse adjustment assembly is connected with the support top plate and is configured to be controlled to move in the vertical direction so as to roughly adjust the height of the support top plate. The fine adjustment assembly is connected with the support top plate and is configured to be controlled to move in the vertical direction so as to perform fine adjustment on the height of the support top plate; the driving assembly is configured to drive the coarse adjustment assembly and the fine adjustment assembly to move in the vertical direction. The height of the support top plate is coarsely adjusted and finely adjusted through the coarse adjusting assembly and the fine adjusting assembly respectively, multiple times of leveling and centering can be conducted in the installation process and after the piston assembly is installed, the support top plate can reach and be stabilized within the allowable horizontal error range, and particularly when the weight of the piston assembly is too large, the support top plate can be accurately adjusted. The problem of insufficient precision or shaking caused by hoisting is avoided, installation errors are avoided, and the installation precision is guaranteed.

Description

Technical Field

[0001] This invention relates to the field of hydrogen-liquid-driven piston compressor technology, and in particular to a base system for a liquid-driven compressor and its leveling method. Background Technology

[0002] The hydrogen-liquid-driven piston compressor uses hydraulic oil to drive the piston in the compression chamber to reciprocate, thereby achieving processes such as intake, compression, and exhaust. The hydraulic cylinder is connected to a hydraulic oil pump unit to provide power, so there is no need for a crankcase. The compressor has a simple structure, and the piston in the cylinder is free-floating, making it easy to replace and with low maintenance costs. It is suitable for the operation of hydrogen refueling stations with frequent start-stop conditions.

[0003] The current design trend for liquid-driven compressors in hydrogen refueling stations is towards double-acting, single-cylinder, high-flow-rate designs, with increasing cylinder diameter and weight. Due to the uneven weight distribution, components may tilt to one side during installation. To ensure alignment and levelness, manual lifting is required, followed by rough adjustments using a simple level. However, due to the high-pressure sealing design, some installation structures and fits have relatively precise tolerances. This rough installation method easily leads to problems such as improper installation, insufficient precision, excessive localized stress on some components, and unreliable sealing in certain areas, ultimately affecting the overall performance of the liquid-driven compressor equipment.

[0004] Furthermore, the installation of the gas-side piston requires precision. If the installation method is not clear and precise enough, it can easily lead to poor sealing in local areas. This can result in hydrogen leakage during subsequent operation and significantly reduce the service life of the gas-side piston. At best, it increases the frequency of replacement of key seals in the liquid-driven compressor; at worst, it can have a major impact on the performance and lifespan of the liquid-driven compressor.

[0005] Given the design trends of liquid-driven compressors for hydrogen refueling stations and the current market situation, how to solve the problem of installation accuracy of liquid-driven compressors, while also facilitating component replacement during subsequent equipment maintenance, is a pressing technical issue that needs to be addressed in this field.

[0006] In view of this, the present invention is hereby proposed. Summary of the Invention

[0007] The technical problem to be solved by the present invention is to overcome at least some of the shortcomings of the prior art and provide a base system for a liquid-driven compressor. By setting coarse adjustment components and fine adjustment components on the top plate of the bracket used to support the liquid-driven compressor body, the height of the top plate of the bracket can be coarsely adjusted and finely adjusted respectively. This allows for multiple leveling and centering during and after the installation of the piston assembly, so that the top plate of the bracket reaches and stabilizes within the allowable horizontal error range. In particular, when the weight of the piston assembly is too large, it avoids the problem of insufficient accuracy or shaking caused by lifting, avoids installation errors, and ensures installation accuracy.

[0008] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by the present invention is as follows:

[0009] A base system for a liquid-driven compressor, comprising:

[0010] The top plate of the bracket is used to support the body of the hydraulic compressor;

[0011] A coarse adjustment component is connected to the top plate of the support, and the coarse adjustment component is configured to move in a controlled vertical direction to coarsely adjust the height of the top plate of the support.

[0012] A fine-adjustment assembly, connected to the top plate of the support, is configured to be controllably moved vertically to finely adjust the height of the top plate of the support; and

[0013] A drive component, connected to the coarse adjustment component and the fine adjustment component, is configured to drive the coarse adjustment component and the fine adjustment component to move in the vertical direction.

[0014] In some embodiments, the coarse adjustment assembly includes a plurality of coarse adjustment devices disposed below the top plate of the support, wherein each coarse adjustment device includes:

[0015] A nut-bolt assembly, comprising a threaded nut and a bolt, wherein one of the nut and bolt is fixedly connected to the top plate of the bracket; and

[0016] The coarse adjustment screw has one end fixedly connected to another of the nuts and bolts, and the other end is connected to the drive assembly for transmission. When the drive assembly drives the coarse adjustment screw to move, it causes the nuts and bolts to rotate relative to each other, thereby causing the displacement of the top plate of the bracket to change.

[0017] In some embodiments, the fine adjustment assembly includes a plurality of fine adjustment devices disposed below the top plate of the support, wherein each fine adjustment device includes:

[0018] The displacement scaling device is fixedly connected at one end to the top plate of the support.

[0019] The fine adjustment lead screw is connected at one end to the other end of the displacement scaling device and at the other end to the drive assembly. When the drive assembly drives the fine adjustment lead screw to move, it causes the output end of the displacement scaling device to move according to the scaled displacement, thereby changing the displacement of the top plate of the support.

[0020] In some embodiments, the displacement scaling device includes an input wedge, an output wedge, and an intermediate wedge, wherein the input wedge has a first wedge angle less than 45°, and the output wedge has a second wedge angle greater than 45°;

[0021] The input wedge is connected to the fine adjustment screw, the output wedge is fixedly connected to the top plate of the bracket, and the intermediate wedge is slidably disposed between the inclined surface of the first wedge angle and the inclined surface of the second wedge angle to transmit displacement.

[0022] In some embodiments, the driving component includes:

[0023] The drive unit has an output shaft;

[0024] A drive shaft is configured to be drivenly connected to the coarse adjustment screw and the fine adjustment screw, for driving the coarse adjustment assembly and the fine adjustment assembly to move in the vertical direction;

[0025] A worm gear transmission mechanism is connected between the output shaft and the drive shaft to change the direction of output power.

[0026] In some embodiments, the drive shaft is connected to the plurality of coarse adjustment screws and the fine adjustment screws via bevel gear mechanisms.

[0027] In some embodiments, an intermittent mechanism is further connected between the bevel gear mechanism and the plurality of coarse adjusting leads and the fine adjusting leads, the intermittent mechanism being configured to start in a controlled intermittent manner to selectively output power to the plurality of coarse adjusting leads and the fine adjusting leads.

[0028] In some embodiments, a levelness detection module is provided on the top plate of the support to detect the tilt angle and levelness of the top plate of the support.

[0029] In some embodiments, the levelness detection module includes multiple tilt sensors and a level.

[0030] The tilt sensor is used to detect the tilt angle of the top plate of the support, and the level is used to detect the levelness of the top plate of the support.

[0031] The present invention also provides a leveling method for a base system of a liquid-driven compressor, applicable to the base system of the liquid-driven compressor described above, comprising:

[0032] During the installation of the cylinder piston assembly, the coarse adjustment component is controlled to move vertically until the top plate of the support reaches the preset first target level. Then, the following steps are repeated:

[0033] Determine the magnitude and direction of the horizontal deviation between the current levelness of the top plate of the support and the preset second target levelness;

[0034] Based on the magnitude and direction of the horizontal deviation, the fine adjustment component is controlled to move and displace in the vertical direction until the horizontal deviation of the top plate of the support plate in each direction is stabilized within the preset allowable horizontal error range.

[0035] By adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art.

[0036] (1) The base system of the liquid-driven compressor provided by the present invention provides a coarse adjustment component and a fine adjustment component on the top plate of the bracket used to support the liquid-driven compressor body. The coarse adjustment component and the fine adjustment component are used to adjust the height of the top plate of the bracket respectively. The system can perform multiple leveling and centering during and after the installation of the piston assembly, so that the top plate of the bracket reaches and stabilizes within the allowable horizontal error range. In particular, when the weight of the piston assembly is too large, it avoids the problem of insufficient accuracy or shaking caused by lifting, avoids installation errors, and ensures installation accuracy.

[0037] (2) The base system of the liquid-driven compressor provided by the present invention uses a geometric wedge to form a displacement scaling device, thereby transmitting displacement and improving the adjustment accuracy of the fine adjustment component. Moreover, by changing the geometric wedge, the wedge tilt angle can be increased or decreased to adjust the scaling ratio, thereby adjusting the adjustment accuracy.

[0038] (3) The base system of the liquid-driven compressor provided by the present invention transmits power through a worm gear transmission mechanism and a bevel gear mechanism, avoiding the coarse adjustment of the base, enabling remote and quantitative control. Moreover, an intermittent mechanism is connected between the bevel gear mechanism and multiple coarse and fine adjustment screws, which facilitates precise control and individual adjustment of multiple coarse and fine adjustment screws. Automatic and manual adjustment methods can also be used, making the installation more precise, convenient and intelligent than traditional installation methods. Attached Figure Description

[0039] The accompanying drawings, as part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments and descriptions of the invention are used to explain the invention, but do not constitute an undue limitation of the invention. Obviously, the drawings described below are merely some embodiments, and those skilled in the art can obtain other drawings based on these drawings without creative effort. In the drawings:

[0040] Figure 1 This is a front view of a portion of the structure of the base system of a liquid-driven compressor provided according to an exemplary embodiment of the present invention;

[0041] Figure 2 yes Figure 1 Top view of the structure;

[0042] Figure 3 This is a schematic diagram of a driving component provided according to an exemplary embodiment of the present invention;

[0043] Figure 4 This is a schematic diagram of a displacement scaling device provided according to an exemplary embodiment of the present invention;

[0044] Figure 5 This is a schematic flowchart of a leveling method for a base system of a liquid-driven compressor according to an exemplary embodiment of the present invention.

[0045] In the diagram: 100, base system;

[0046] 10. Support top plate;

[0047] 20. Coarse adjustment device; 21. Nut; 22. Bolt; 23. Coarse adjustment screw;

[0048] 30. Fine adjustment device; 31. Proportional scaling device; 311. Input wedge; 312. Output wedge; 313. Intermediate wedge; 32. Fine adjustment lead screw;

[0049] 40. Drive assembly; 41. Drive unit; 42. Drive shaft; 43. Worm gear transmission mechanism; 431. Worm; 432. Worm; 44. Bevel gear mechanism; 45. Intermittent mechanism; 46. Displacement adjustment housing; 47. Coupling; 48. Flywheel;

[0050] 50. Levelness detection module; 51. Tilt sensor; 52. Level instrument;

[0051] 200. Liquid-driven compressor body.

[0052] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the invention in any way, but rather to illustrate the concept of the invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0053] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0054] In the description of this invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0055] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0056] As described in the background section, the installation accuracy of existing liquid-driven compressors is becoming increasingly difficult to control. Based on this, the present invention provides a base system for a liquid-driven compressor, comprising: a support top plate, a coarse adjustment component, a fine adjustment component, and a drive component. The support top plate supports the liquid-driven compressor body; the coarse adjustment component is connected to the support top plate and configured to move in a controlled vertical direction to coarsely adjust the height of the support top plate; the fine adjustment component is connected to the support top plate and configured to move in a controlled vertical direction to finely adjust the height of the support top plate; the drive component is connected to the coarse adjustment component and the fine adjustment component and configured to drive the coarse adjustment component and the fine adjustment component to move in a vertical direction. In the above scheme, by using coarse adjustment components and fine adjustment components to coarsely and finely adjust the height of the support top plate, multiple leveling and centering can be performed during and after the installation of the piston assembly, so that the support top plate reaches and stabilizes within the allowable horizontal error range. In particular, when the weight of the piston assembly is too large, it avoids the problem of insufficient accuracy or shaking caused by lifting, avoids installation errors, and ensures installation accuracy.

[0057] The following is a reference to the appendix. Figures 1 to 5 The preferred technical solution of the base system 100 of the liquid-driven compressor and its leveling method provided by the present invention will be described in detail.

[0058] like Figure 1 and Figure 2As shown, the base system 100 of the liquid-driven compressor includes a support top plate 10, a coarse adjustment assembly, a fine adjustment assembly, and a drive assembly 40. The support top plate 10 supports the liquid-driven compressor body 200, which includes key components such as hydraulic cylinders and in-cylinder piston assemblies. These structures are conventional designs in the field and will not be described in detail here.

[0059] A coarse adjustment component is connected to the top plate 10 of the support, and the coarse adjustment component is configured to move in a controlled vertical direction to coarsely adjust the height of the top plate 10 of the support; a fine adjustment component is connected to the top plate 10 of the support, and the fine adjustment component is configured to move in a controlled vertical direction to finely adjust the height of the top plate 10 of the support.

[0060] It should be clarified that the essential difference between "coarse adjustment" and "fine adjustment" here lies in the difference in adjustment precision. The adjustment precision of the fine adjustment component is significantly higher than that of the coarse adjustment component. The two work together to achieve efficient height calibration by "coarse adjustment first and then fine adjustment".

[0061] The drive component 40 is connected to the coarse adjustment component and the fine adjustment component, and is configured to drive the coarse adjustment component and the fine adjustment component to move in the vertical direction, thereby achieving the coordinated adjustment goal of coarse and fine adjustment of the height of the support top plate 10.

[0062] To further ensure the levelness of the support top plate 10 and guarantee the operational stability of the hydraulic compressor, a levelness detection module 50 is added to the support top plate 10. This module monitors the tilt angle and levelness of the support top plate 10 in real time, ensuring it remains within a reference level range. As an example, the levelness detection module 50 includes multiple tilt sensors 51 and a level 52. The tilt sensors 51 detect the tilt angle of the support top plate 10, providing quantitative data support for level calibration. The level 52 detects the levelness of the support top plate 10, determining whether there is a level deviation.

[0063] Taking a common rectangular bracket top plate 10 as an example, there are 4 tilt sensors 51, which are installed at the four corners of the bracket top plate 10 respectively, which can cover the tilt angle detection of the top plate in all directions and avoid local blind spots; there are 2 levels 52, which are installed on both sides of the middle of the bracket top plate 10 (such as both sides of the centerline along the length direction), which can reflect the horizontal state of the middle of the top plate and also take into account the overall levelness detection accuracy.

[0064] It should be noted that the shape of the support top plate 10 is not fixed and needs to be adapted to actual factors such as the external structure of the hydraulic compressor body 200, the spatial environment of the installation site, and the load-bearing requirements (e.g., it can be adjusted to a square, polygon, etc.). Correspondingly, the number of tilt sensors 51 and the specific installation position of the level 52 also need to be optimized and adjusted simultaneously. The core principle is to ensure that the detection range covers the key areas of the support top plate 10, meets the requirements for accurate detection of tilt angle and level, and provides reliable data for the subsequent calibration of the adjustment components.

[0065] In some implementations, refer again Figure 1 The coarse adjustment assembly includes four coarse adjustment devices 20 located at the four corners below the support top plate 10. Each coarse adjustment device 20 includes a nut-bolt assembly and a coarse adjustment screw 23. The nut-bolt assembly includes a nut 21 and a bolt 22 that are threadedly connected, and one of the nut 21 and bolt 22 is fixedly connected to the support top plate 10. One end of the coarse adjustment screw 23 is fixedly connected to the other of the nut 21 and bolt 22, and the other end is connected to the drive assembly 40 for transmission. When the drive assembly 40 drives the coarse adjustment screw 23 to move, it causes the nut 21 and bolt 22 to rotate relative to each other, thereby changing the displacement of the support top plate 10.

[0066] In the above scheme, either the nut 21 or the bolt 22 that are threaded together (such as nut 21 or bolt 22) is fixedly connected to the bottom of the bracket top plate 10 (which can be achieved by welding, bolt 22 fastening, etc.) as the "fixed reference end" for height adjustment. The other part of the nut-bolt combination (i.e. the bolt 22 or nut 21 that is not fixed to the bracket top plate 10) is fixedly connected to one end of the coarse adjustment screw 23. The other end of the coarse adjustment screw 23 is connected to the drive assembly 40 to form a transmission connection, constituting the "power transmission end" for height adjustment.

[0067] When the drive assembly 40 starts and drives the coarse adjustment screw 23 to move (usually in a rotary motion), since the coarse adjustment screw 23 is fixed to the corresponding component in the nut-bolt assembly, the movement of the coarse adjustment screw 23 will cause the nut 21 and bolt 22 to rotate relative to each other. Based on the mechanical characteristics of threaded transmission, this relative rotation is converted into a linear displacement in the vertical direction, which in turn causes a change in the height of the bracket top plate 10 fixed to the nut-bolt assembly, ultimately achieving coarse-precision height adjustment of the bracket top plate 10.

[0068] Taking a specific assembly scenario as an example: if the nut 21 is welded and fixed to the bottom of the bracket top plate 10, and the bolt 22 is fixedly engaged with the end of the coarse adjustment screw 23, then when the coarse adjustment screw 23 is driven to rotate, the bolt 22 will rotate synchronously with the screw and generate a vertical displacement relative to the fixed nut 21. The nut 21 directly drives the local area of ​​the bracket top plate 10 to achieve height adjustment. Multiple coarse adjustment devices 20 can work together to complete the coarse adjustment of the entire bracket top plate 10.

[0069] The fine adjustment assembly includes four fine adjustment devices 30 located at the four corners below the top plate 10 of the support. Each fine adjustment device 30 includes a displacement scaling device 31 and a fine adjustment lead screw 32. One end of the displacement scaling device 31 is fixedly connected to the top plate 10 of the support; one end of the fine adjustment lead screw 32 is connected to the other end of the displacement scaling device 31, and the other end is connected to the drive assembly 40 for transmission. When the drive assembly 40 drives the fine adjustment lead screw 32 to move, it causes the output end of the displacement scaling device 31 to move according to the scaled displacement, thereby changing the displacement of the top plate 10 of the support.

[0070] In the above scheme, a "displacement scaling mechanism" is introduced into the fine adjustment component to improve the adjustment accuracy.

[0071] Specifically, the displacement scaling device 31, as the core component for precision control, has one end fixedly connected to the bottom of the support top plate 10 and the other end connected to the fine adjustment screw 32. The displacement scaling device 31 can reduce or amplify the displacement at the input end according to a preset ratio, outputting a smaller linear displacement, thereby achieving high-precision adjustment. One end of the fine adjustment screw 32 is connected to the input end of the displacement scaling device 31, and the other end is connected to the drive assembly 40 for transmission, responsible for transmitting the power of the drive assembly 40 to the displacement scaling device 31.

[0072] When the drive assembly 40 drives the fine adjustment screw 32 to move (usually by rotation), the screw transmits power to the input end of the displacement scaling device 31, causing an initial displacement at the input end. The displacement scaling device 31 processes the initial displacement according to a preset scaling coefficient, outputting a more accurate "scaled displacement," which is then transmitted to the fixed support top plate 10 through its output end. Ultimately, under the coordinated action of multiple fine adjustment devices 30, the support top plate 10 produces a minute height change, achieving high-precision height adjustment.

[0073] Continuing the logic of the coarse adjustment scenario above: when the fine adjustment screw 32 is driven to rotate, its rotational motion is converted into linear displacement at the input end of the displacement scaling device 31. After being scaled internally by the device, the output end pushes the bracket top plate 10 to move locally with a smaller step. Multiple devices can work together to complete the fine adjustment of the entire bracket top plate 10, ensuring that the height deviation is controlled within a very small range.

[0074] Furthermore, both the coarse adjustment component and the fine adjustment component are powered by the drive component 40, which is connected to the main control system (not shown) of the liquid-driven compressor via signal lines, forming a closed-loop control system of "command-execution-feedback". This main control system can possess the following core functions:

[0075] Remote control capability: Supports remote signal transmission, enabling off-site control of drive component 40, adapting to centralized management and control needs in industrial scenarios;

[0076] Human-computer interaction function: Equipped with a touch screen operation interface, staff can directly input target displacement parameters manually on the touch screen, making the operation convenient and intuitive;

[0077] Automatic control logic: The built-in control program (such as PLC control logic) can automatically generate control commands based on preset algorithms or external detection signals (such as the detection data of the levelness detection module 50), and can complete the adjustment without manual intervention.

[0078] To ensure that the adjustment accuracy is quantifiable and controllable, both the coarse adjustment screw 23 and the fine adjustment screw 32 adopt a fine-pitch screw design. The core advantage of the fine-pitch screw lies in its "fixed and small pitch"—the vertical displacement of the screw is equal to the pitch for each rotation, and this parameter is a fixed value that can be used as a benchmark for displacement calculation.

[0079] Based on this characteristic, the main control system achieves precise displacement control in the following ways:

[0080] Displacement calculation logic: The main control system is equipped with a rotation counter, which can record the number of rotations of the coarse adjustment screw 23 and the fine adjustment screw 32 in real time; combined with the preset fixed pitch of the screw, the actual displacement of the screw is accurately calculated by the formula "displacement = pitch × number of rotations", and then it is determined whether the height change of the support top plate 10 meets the target requirements.

[0081] Command output and adjustment method: The operator can manually input the target displacement parameters through the touch screen. The main control system calculates the required number of screw rotations based on the parameters and sends the corresponding drive command to the drive component 40. At the same time, the main control system can also combine the real-time data of the levelness detection module 50 (such as the tilt angle of the support top plate 10) to automatically calculate the amount of displacement to be compensated, generate control commands and drive the adjustment component to achieve "automatic calibration" to ensure that the support top plate 10 is always in a level state and meets the height requirements.

[0082] As an example, refer to Figure 4 As shown, the displacement scaling device 31 adopts a "three-wedge cooperative transmission" structure design, including an input wedge 311, an output wedge 312 and an intermediate wedge 313, which achieves precise scaling of displacement through geometric angle matching.

[0083] The input wedge 311 has a first wedge angle less than 45°, and the output wedge 312 has a second wedge angle greater than 45°. The input wedge 311 is connected to the fine adjustment screw 32, the output wedge 312 is fixedly connected to the support top plate 10, and the intermediate wedge 313 is slidably disposed between the inclined surface of the first wedge angle and the inclined surface of the second wedge angle to transmit displacement.

[0084] In the above scheme, the input wedge 311 serves as the displacement input end, with one end connected to the fine adjustment screw 32, and can move vertically synchronously with the fine adjustment screw 32; the wedge is provided with an inclined transmission ramp, which forms a first wedge angle θ1, and θ1 is less than 45°, laying the geometric foundation for subsequent displacement amplification.

[0085] The output wedge 312 serves as the displacement output end, with one end fixedly connected to the top plate 10 of the bracket to directly transmit and adjust the displacement; it is also provided with an inclined transmission ramp, which forms a second wedge angle θ2, and θ2 is greater than 45°, forming an opposite angle match with the first wedge angle.

[0086] The intermediate wedge 313, as an intermediate medium for displacement transmission, is slidably clamped between the inclined surface of the input wedge 311 and the inclined surface of the output wedge 312 (the contact surface adopts a low-friction design to ensure smooth sliding). Its function is to convert the vertical displacement of the input wedge 311 into its own horizontal displacement, and then further into the vertical displacement of the output wedge 312, realizing the dual conversion of displacement direction and magnitude.

[0087] When the fine-tuning screw 32 drives the input wedge 311 to move vertically (up or down a distance h), based on the geometric transmission characteristics of the wedge's inclined surface, the displacement will be transmitted to the output wedge 312 through the intermediate wedge 313 at a preset ratio. The specific derivation process is as follows:

[0088] 1. Conversion of input displacement to intermediate wedge 313: Input wedge 311 pushes intermediate wedge 313 with the inclined surface of the first wedge angle θ1. According to the trigonometric function relationship, intermediate wedge 313 will generate a horizontal displacement, the distance of which is h·tanθ1 (tanθ1 is the tangent of the first wedge angle. Since θ1 < 45°, tanθ1 < 1, this step realizes the initial adjustment of input displacement).

[0089] 2. Transformation of intermediate wedge 313 into output displacement: The horizontal displacement of intermediate wedge 313 is transmitted in the reverse direction through the inclined plane of the second wedge angle θ2 of output wedge 312. Based on the trigonometric function relationship, output wedge 312 will generate a vertical displacement, the distance of which is (h·tanθ1) / tanθ2.

[0090] 3. The core logic of scaling ratio: Since θ1 < 45° and θ2 > 45°, tanθ1 < 1 and tanθ2 > 1. The final output displacement (the actual fine-tuning displacement of the bracket top plate 10) to the input displacement (the initial displacement of the fine-tuning screw 32) is tanθ1 / tanθ2, and this ratio is much less than 1. This achieves precise scaling of "converting large input displacement into small output displacement", which is also the core reason why the precision of the fine-tuning component is higher than that of the coarse-tuning component.

[0091] To more intuitively illustrate the scaling effect, let's take actual angle parameters as an example: Assuming the tangent of the first wedge angle θ1 is tanθ1 = 1 / 4 (corresponding to θ1≈14.04°), and the tangent of the second wedge angle θ2 is tanθ2 = 4 (corresponding to θ2≈75.96°), then the displacement scaling ratio is (1 / 4) / 4 = 1 / 16. This means that when the fine adjustment screw 32 drives the input wedge 311 to move vertically by 16mm, after being transmitted through the intermediate wedge 313 and scaled by the output wedge 312, the output wedge 312 only drives the support top plate 10 to move vertically by 1mm, achieving high-precision adjustment at the millimeter or even micrometer level, effectively ensuring the accuracy of the height calibration of the support top plate 10.

[0092] It should be noted that in this embodiment, the input wedge 311 and the intermediate wedge 313 adopt a right-angled triangle structure, and the output wedge 312 adopts a right-angled trapezoidal structure. This design can ensure the stability of the inclined plane transmission and the accuracy of displacement conversion through regular geometric shape, and is a preferred solution that takes into account both processing convenience and functional reliability.

[0093] It should be clarified that the above shapes are merely exemplary designs and not the only limitations. The specific shapes of the input wedge 311, output wedge 312, and intermediate wedge 313 can be flexibly adjusted according to factors such as actual assembly space, transmission efficiency requirements, and processing conditions. The core criterion is that they can meet the transmission logic of "input displacement → intermediate horizontal displacement → output scaling displacement" and ensure smooth sliding of the inclined surface contact and stability of the displacement ratio. For example, the wedge structure can adopt other adaptable shapes such as non-right-angled triangles and trapezoidal variants, as long as its inclined surface angle meets the core parameter requirements of θ1 < 45° and θ2 > 45°, and can achieve effective transmission and scaling of displacement, all of which fall within the protection scope of this invention.

[0094] In some implementations, four fine adjustment devices 30 are arranged correspondingly inside the four coarse adjustment devices 20, forming a distributed layout of "outer coarse adjustment + inner fine adjustment". This not only optimizes space utilization, but also further improves leveling accuracy and system stability through the synergy of layout and function.

[0095] Specifically, the load-bearing core of the support top plate 10 is concentrated in the middle and inner areas (the main stress points of the liquid-driven compressor body 200 are mostly located on the inner side of the top plate). The fine adjustment device 30 is located on the inner side, which can directly and accurately compensate for the horizontal deviation of the core stress area, avoiding the "edge adjustment lag" problem caused by the long lever arm of the outer coarse adjustment device, making the correction of small deviations more direct and efficient, and improving the leveling response speed.

[0096] The coarse adjustment device 20 is responsible for large-stroke, coarse-precision height adjustment with a relatively large range of motion; the fine adjustment device 30 is responsible for small-stroke, high-precision deviation compensation with a very small range of motion. The two devices adopt an "outer-inner" separate layout, which reduces mechanical interference (such as vibration transmission and displacement) to the fine adjustment components during coarse adjustment, while avoiding motion conflicts caused by spatial overlap with the coarse adjustment device during fine adjustment. This ensures the independence and stability of coarse and fine adjustment actions, further guaranteeing adjustment accuracy.

[0097] In addition, the outer coarse adjustment device 20 can form a stable force-bearing frame of "four corner supports", providing basic load-bearing capacity and overall stability for the support top plate 10; the inner fine adjustment device 30, as the "core auxiliary support", can disperse the local stress in the core area through multiple inner supports on the basis of the coarse adjustment frame, avoid the top plate from undergoing minor deformation due to stress concentration, and at the same time improve the vibration resistance of the top plate during the leveling process, ensuring the long-term stability of the levelness.

[0098] Moreover, the "outer coarse adjustment + inner fine adjustment" layout can make full use of the space below the bracket top plate 10, avoiding the problem of excessive installation space occupation caused by the horizontal dispersion of multiple adjustment devices, which is especially suitable for scenarios with limited installation space. At the same time, the inner layout can reduce the direct contact between the fine adjustment device 30 and the external environment, reduce the contamination of fine adjustment components (such as displacement proportional scaling device 31 and fine thread screw) by dust, oil and other contaminants, extend the service life of precision components, and ensure the consistency of long-term adjustment accuracy.

[0099] The outer coarse adjustment device achieves rapid adjustment of the overall height through a four-corner layout, while the inner fine adjustment device 30 performs precise calibration for the core area. The two form a collaborative leveling logic of "external control of the whole + internal control of the core"—coarse adjustment quickly approaches the target level, while fine adjustment accurately eliminates minor deviations in the core area. The matching of layout and function makes the "coarse first, then fine" leveling process smoother, significantly shortening the overall leveling time and improving assembly efficiency.

[0100] In some embodiments, the drive assembly 40 employs a modular design of "power output - direction conversion - distributed transmission". (Refer to...) Figure 3 As shown, the drive assembly 40 specifically includes a drive unit 41, a drive shaft 42, and a worm gear transmission mechanism 43. The drive unit 41 has an output shaft; the drive shaft 42 is configured to be drivenly connected to the coarse adjustment screw 23 and the fine adjustment screw 32, for driving the coarse adjustment assembly and the fine adjustment assembly to move vertically; the worm gear transmission mechanism 43 is connected between the output shaft and the drive shaft 42, for changing the direction of the output power.

[0101] Furthermore, the drive shaft 42 is connected to the plurality of coarse adjustment screws 23 and the fine adjustment screws 32 respectively via bevel gear mechanisms 44.

[0102] An intermittent mechanism 45 is also connected between the bevel gear mechanism 44 and the plurality of coarse adjusting screws 23 and the fine adjusting screws 32. The intermittent mechanism 45 is configured to start in a controlled intermittent manner to selectively output power to the plurality of coarse adjusting screws 23 and the fine adjusting screws 32.

[0103] As an example, the drive shaft 42, worm gear transmission mechanism 43, bevel gear mechanism 44, and intermittent mechanism 45 can be configured to be integrated within the displacement adjustment housing 46. The output shaft of the drive unit 41 inputs power into the displacement adjustment housing 46 via a flexible coupling 47 and a flywheel 48. Within the displacement adjustment housing 46, the flywheel 48 is connected to a worm gear 432 mechanism (including a worm 431 and a worm 432) via a shaft. The worm gear 431 and worm gear 432 mechanism are connected to the drive shaft 42 of each adjusting screw. Four sets of bevel gear transmission mechanisms are mounted on the drive shaft 42 of each adjusting screw. Two sets of bevel gear transmission mechanisms are connected to one intermittent mechanism 45 between each of the four coarse adjusting screws 23, and two sets of bevel gear transmission mechanisms are connected to one intermittent mechanism 45 between each of the four fine adjusting screws 32. The eight intermittent mechanisms 45 are connected to the main control system, receiving control commands from the main control system to change the direction of output power and whether to output power to drive each adjusting screw.

[0104] In the above scheme, the drive unit 41 serves as the power source, equipped with a power output shaft (exemplarily using a stepper motor, which can precisely control the speed and angle, adapting to high-precision adjustment requirements). The drive shaft 42 serves as the core shaft for power distribution, configured to form a drive connection with all coarse adjustment screws 23 and fine adjustment screws 32. Its core function is to transmit power to each adjustment screw, driving the coarse and fine adjustment components to move vertically. The worm gear transmission mechanism 43 is connected in series between the output shaft of the drive unit 41 and the drive shaft 42. Its core function is to change the direction of power transmission (e.g., converting the vertical power output by the drive unit 41 into the horizontal power required by the drive shaft 42, or vice versa. Note that the vertical and horizontal directions here are directions shown on paper, not actual directions), while also having a speed reduction and torque increase effect, improving the stability and controllability of power transmission.

[0105] To achieve precise control of multiple coarse adjustment screws 23 and fine adjustment screws 32, the drive assembly 40 adds a bevel gear mechanism 44 and an intermittent mechanism 45 to the power transmission path, forming a control logic of "graded transmission + selective output".

[0106] 1. Transmission function of bevel gear mechanism 44: The drive shaft 42 is connected to each coarse adjusting lead screw 23 and fine adjusting lead screw 32 through the bevel gear mechanism 44. The bevel gear mechanism 44 can further optimize the power transmission direction, adapt to the spatial arrangement angle between the adjusting lead screw and the drive shaft 42, and ensure that the power is efficiently transmitted to each adjusting lead screw;

[0107] 2. Selective control function of intermittent mechanism 45: An additional intermittent mechanism 45 is connected in series between the bevel gear mechanism 44 and each coarse adjusting lead screw 23 and fine adjusting lead screw 32. This intermittent mechanism 45 is configured for controlled intermittent start, and can selectively output power to the target adjusting lead screw (single or multiple coarse adjusting lead screws 23 and fine adjusting lead screws 32) according to the instructions of the main control system, realizing "on-demand drive"—for example, when only the coarse adjusting component is driven, the intermittent mechanism 45 corresponding to the fine adjusting component remains in the open state; when switching to the fine adjustment mode, the intermittent mechanism 45 corresponding to the coarse adjusting component is disconnected, ensuring the independence and accuracy of the adjustment process.

[0108] To optimize structural compactness and reduce installation complexity, the core components of the drive assembly 40 can be integrated: for example, the drive shaft 42, worm gear transmission mechanism 43, bevel gear mechanism 44 and intermittent mechanism 45 can be integrated into the displacement adjustment box 46 to form a modular assembly, which is convenient for on-site installation and commissioning, and can protect the internal transmission components from external environmental interference (such as dust, oil, etc.).

[0109] With the integrated layout, the power transmission process of the stepper motor as the drive unit 41 is as follows:

[0110] 1. The output shaft of the drive unit 41 (stepper motor) is connected to the flywheel 48 through the coupling 47, and the power is input into the displacement adjustment box 46;

[0111] 2. The flywheel 48 is rigidly connected to the worm gear transmission mechanism 43 (including worm 431 and worm 432) via a transmission shaft. The power is transmitted to the drive shaft 42 of each adjusting screw after the worm gear transmission mechanism 43 changes direction, reduces speed and increases torque.

[0112] 3. Four sets of bevel gear transmission mechanisms are mounted on the drive shaft 42. Two sets of bevel gear mechanisms 44 are connected to four coarse adjusting screws 23, and each set of bevel gear mechanisms 44 is connected in series with an intermittent mechanism 45 between it and the coarse adjusting screw 23. The other two sets of bevel gear mechanisms 44 are connected to four fine adjusting screws 32, and each set of bevel gear mechanisms 44 is connected in series with an intermittent mechanism 45 between it and the fine adjusting screw 32 (a total of eight intermittent mechanisms 45).

[0113] 4. All intermittent mechanisms 45 are connected to the main control system signal and receive control commands from the main control system in real time. They control their own on / off state and power transmission direction through the commands, and finally realize the function of "selectively driving the target adjustment screw action" to accurately match different control requirements of coarse adjustment and fine adjustment.

[0114] like Figure 5As shown, the core of the leveling method for the base system 100 of a liquid-driven compressor provided by this invention follows the logic of "first coarse adjustment to meet the standard → cyclic fine adjustment and calibration". It rapidly approaches the target levelness through the coarse adjustment component, and then eliminates minor deviations through the fine adjustment component, ultimately achieving high-precision leveling. Specifically, it includes the following steps:

[0115] During the installation of the cylinder piston assembly (including the air-side piston assembly and the hydraulic oil piston assembly), the coarse adjustment assembly is controlled to move vertically until the level of the bracket top plate 10 reaches the preset first target level (coarse adjustment threshold). Then, the following steps are repeated:

[0116] The magnitude and direction of the horizontal deviation between the current levelness of the support top plate 10 and the preset second target levelness (final accuracy threshold) are determined;

[0117] Based on the magnitude and direction of the horizontal deviation, the fine adjustment component is controlled to move and displace in the vertical direction until the horizontal deviation of the support top plate 10 in each direction is stabilized within the preset allowable horizontal error range.

[0118] The following details the disassembly and leveling procedures, combining the "during installation" and "post-installation" phases:

[0119] 1. Coarse and preliminary fine adjustments during component installation

[0120] The core objective of this stage is to quickly establish a baseline level by coarsely adjusting the components, while making preliminary fine adjustments based on the installation resistance of the components to avoid component jamming or damage due to level deviation during installation.

[0121] (1) Leveling operation during the installation of the gas-side piston assembly

[0122] 1. Pre-adjustment Positioning: Parameters can be manually input via the touchscreen of the main control system, or commands can be automatically generated by the system to raise the side of the bracket top plate 10 corresponding to the gas-side piston assembly by a preset height (or lower the opposite side; the two methods are based on the same principle and have the same operation process; here, "raising the same side" is taken as an example). Specifically, the main control system sends control commands to the drive unit 41 and the corresponding intermittent mechanism 45, driving the coarse adjustment screw 23 on that side to move spirally upwards. Since the coarse adjustment screw 23 has a fine-tooth structure and a fixed pitch, the main control system accurately calculates and controls the upward displacement of the coarse adjustment screw 23 through the number of rotations of the bevel gear mechanism 44 and the built-in counter of the intermittent mechanism 45, ensuring pre-adjustment accuracy.

[0123] 2. Component pre-installation: Slowly insert the gas-side piston assembly into the gas-side piston cylinder, and wait for it to automatically move to a stable initial position under the action of gravity.

[0124] 3. Coarse leveling: Input the target parameters through the main control system and start the automatic leveling mode. The system adopts PID control logic to drive the four coarse adjustment screws 23 to adjust the height respectively. At the same time, it receives the feedback signal of the precision level 52 in real time. Through multiple rounds of iterative calibration, the level of the bracket top plate 10 is adjusted to the first target level.

[0125] 4. Fine-tuning and Adaptation: Continue pushing the gas-side piston assembly to the designated installation position, monitoring the pushing resistance throughout the process. If the resistance is too high (indicating a slight horizontal deviation causing component interference), do not forcibly hammer it with tools. Fine-tuning must be performed using the following steps:

[0126] Manual input: Input fine-tuning parameters (such as the number of rotations of the fine-tuning screw 32) on the touch screen control terminal;

[0127] Displacement scaling: After the parameters are reduced by the displacement scaling device 31 according to a preset ratio (such as 1 / 16), they are converted into the actual screw advance distance of the fine adjustment screw 32, which pushes the bracket top plate 10 to produce a small displacement.

[0128] Precise leveling: Repeated fine-tuning operations until the pushing resistance is minimized, then the four fine adjustment screws 32 are driven by PID control logic, and combined with the feedback data of the four tilt sensors 51, local lifting compensation is performed to further optimize the levelness.

[0129] (2) Leveling operation during the installation of hydraulic piston assembly

[0130] 1. Pre-adjustment positioning: By inputting parameters into the main control system, the height of any side of the bracket top plate 10 can be raised or lowered by a preset height (to adapt to the installation orientation requirements of the hydraulic piston assembly). The specific control logic is the same as that during the installation of the pneumatic piston assembly: the main control system drives the corresponding side coarse adjusting screw 23 to move through the drive unit 41 and the intermittent mechanism 45, and precisely controls the displacement by utilizing the fixed pitch and rotation counting function of the fine screw.

[0131] 2. Component pre-installation: Slowly insert the hydraulic piston assembly into the hydraulic cylinder and wait for it to move automatically to a stable initial position.

[0132] 3. Coarse leveling: Repeat the "coarse leveling" steps of the gas-side piston assembly installation - drive the four coarse adjustment screws 23 to rise and fall iteratively through PID control logic, and combine the feedback signal of the precision level 52 to adjust the level of the bracket top plate 10 to the first target level.

[0133] 4. Fine-tuning and adaptation: Continue advancing the hydraulic piston assembly to the designated position and monitor the advancing resistance.

[0134] If the resistance is too high, the number of rotations of the fine adjustment screw 32 can be input through the touch screen control terminal. After being scaled by the displacement scaling device 31 (e.g., reduced to 1 / 16 of the original advance distance), the small displacement adjustment of the bracket top plate 10 can be achieved until the resistance is minimized.

[0135] Then, through the PID control logic, four fine adjustment screws 32 are linked, and based on the real-time feedback data from the tilt sensor 51, the final local leveling is completed.

[0136] 2. Fine-tuning and calibration after component installation (final compliance stage)

[0137] Once the pneumatic piston assembly and hydraulic piston assembly are installed and the top plate of the support has reached the first target level, the final fine-tuning process is initiated. High-precision compliance is achieved through closed-loop control, with the specific steps following a cyclical logic of "detection-processing-decision-execution-feedback":

[0138] 1. Real-time detection: The levelness detection module 50 (tilt sensor 51 + precision level 52) continuously collects the current levelness of the support top plate 10 and uploads the data to the main control system in real time;

[0139] 2. Deviation processing: The main control system reads the sensor data and compares it with the preset second target level (such as the zero level) to accurately calculate the magnitude and direction of the horizontal deviation in each direction.

[0140] 3. Command Decision: The main control system is based on the PID algorithm and generates targeted correction commands based on the deviation data, which clearly defines the fine adjustment screw 32 that needs to be activated, the lifting direction and the amount of displacement.

[0141] 4. Execution of correction: The main control system sends a command to the corresponding intermittent mechanism 45 to control its on / off state and power transmission direction, drive the target fine adjustment screw 32 to move, and accurately transmit the displacement to the support top plate 10 through the displacement proportional scaling device 31 to compensate for the horizontal deviation (the mechanical transmission principle of fine adjustment is described in the previous description of the displacement proportional scaling device 31, and will not be repeated here).

[0142] 5. Feedback loop: After the correction action is completed, the levelness detection module 50 collects the levelness data again and feeds it back to the main control system. The main control system judges whether the deviation is within the allowable range. If it does not meet the standard, the above steps are repeated until the deviation stabilizes within the allowable level error range, and the fine-tuning process ends.

[0143] The base system 100 and leveling method for the liquid-driven compressor provided by the present invention have the following beneficial effects:

[0144] 1. The automatic leveling base system 100 is more intelligent and convenient in the process of leveling and centering the piston assembly multiple times. In particular, when the weight of the assembly is too large, it avoids the problem of insufficient accuracy or shaking caused by lifting, avoids installation errors, and ensures installation accuracy.

[0145] 2. It avoids the impact of machining errors on the installation accuracy of the mounting base of the traditional fixed type of liquid-driven compressor. The machining accuracy error of the support top plate can be avoided and offset through the initial calibration.

[0146] 3. It can solve the problem of installation accuracy of liquid-driven compressors, and also facilitates the replacement of components during subsequent equipment maintenance.

[0147] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-described technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A base system for a liquid-driven compressor, characterized in that, include: The top plate of the bracket is used to support the body of the hydraulic compressor; A coarse adjustment component is connected to the top plate of the support, and the coarse adjustment component is configured to move in a controlled vertical direction to coarsely adjust the height of the top plate of the support. A fine adjustment assembly is connected to the top plate of the support, and the fine adjustment assembly is configured to move in a controlled vertical direction to finely adjust the height of the top plate of the support; as well as A drive component, connected to the coarse adjustment component and the fine adjustment component, is configured to drive the coarse adjustment component and the fine adjustment component to move in the vertical direction.

2. The base system for the liquid-driven compressor according to claim 1, characterized in that, The coarse adjustment assembly includes multiple coarse adjustment devices disposed below the top plate of the support, wherein each coarse adjustment device includes: A nut-bolt assembly, comprising a threaded nut and a bolt, wherein one of the nut and bolt is fixedly connected to the top plate of the bracket; and The coarse adjustment screw has one end fixedly connected to another of the nuts and bolts, and the other end is connected to the drive assembly for transmission. When the drive assembly drives the coarse adjustment screw to move, it causes the nuts and bolts to rotate relative to each other, thereby causing the displacement of the top plate of the bracket to change.

3. The base system for the liquid-driven compressor according to claim 2, characterized in that, The fine adjustment assembly includes a plurality of fine adjustment devices disposed below the top plate of the support, wherein each fine adjustment device includes: The displacement scaling device is fixedly connected at one end to the top plate of the support. The fine adjustment lead screw is connected at one end to the other end of the displacement scaling device and at the other end to the drive assembly. When the drive assembly drives the fine adjustment lead screw to move, it causes the output end of the displacement scaling device to move according to the scaled displacement, thereby changing the displacement of the top plate of the support.

4. The base system for the liquid-driven compressor according to claim 3, characterized in that, The displacement scaling device includes an input wedge, an output wedge, and an intermediate wedge. The input wedge has a first wedge angle, which is less than 45°. The output wedge has a second wedge angle, which is greater than 45°. The input wedge is connected to the fine adjustment screw, the output wedge is fixedly connected to the top plate of the bracket, and the intermediate wedge is slidably disposed between the inclined surface of the first wedge angle and the inclined surface of the second wedge angle to transmit displacement.

5. The base system for the liquid-driven compressor according to claim 3 or 4, characterized in that, The driving component includes: The drive unit has an output shaft; A drive shaft is configured to be drivenly connected to the coarse adjustment screw and the fine adjustment screw, for driving the coarse adjustment assembly and the fine adjustment assembly to move in the vertical direction; A worm gear transmission mechanism is connected between the output shaft and the drive shaft to change the direction of output power.

6. The base system for the liquid-driven compressor according to claim 5, characterized in that, The drive shaft is connected to the coarse adjustment screws and the fine adjustment screws respectively via bevel gear mechanisms.

7. The base system for the liquid-driven compressor according to claim 6, characterized in that, An intermittent mechanism is also connected between the bevel gear mechanism and the plurality of coarse adjusting screws and the fine adjusting screws. The intermittent mechanism is configured to start in a controlled intermittent manner to selectively output power to the plurality of coarse adjusting screws and the fine adjusting screws.

8. The base system of the liquid-driven compressor according to any one of claims 1 to 7, characterized in that, A levelness detection module is provided on the top plate of the support to detect the tilt angle and levelness of the top plate of the support.

9. The base system for the liquid-driven compressor according to claim 8, characterized in that, The levelness detection module includes multiple tilt sensors and a level. The tilt sensor is used to detect the tilt angle of the top plate of the support, and the level is used to detect the levelness of the top plate of the support.

10. A method for leveling the base system of a liquid-driven compressor, characterized in that, A base system suitable for a liquid-driven compressor according to any one of claims 1 to 9, comprising: During the installation of the cylinder piston assembly, the coarse adjustment component is controlled to move vertically until the top plate of the support reaches the preset first target level. Then, the following steps are repeated: Determine the magnitude and direction of the horizontal deviation between the current levelness of the top plate of the support and the preset second target levelness; Based on the magnitude and direction of the horizontal deviation, the fine adjustment component is controlled to move and displace in the vertical direction until the horizontal deviation of the top plate of the support plate in each direction is stabilized within the preset allowable horizontal error range.

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