Machine tool movable base and machine tool

Abstract

The application discloses a machine tool movable base and a machine tool, and relates to the technical field of machine tools. The machine tool movable base comprises a moving platform, a moving mechanism, a fixed supporting leg and an adaptive hydraulic supporting device. The moving mechanism comprises a moving part, which is used for realizing the movement of the base and can be lifted in an extended position and a retracted position. The fixed supporting leg is arranged at the bottom of the moving platform. The adaptive hydraulic supporting device comprises a hydraulic source, an equalizing oil way and a plurality of hydraulic supporting units. When the moving part is in the extended position, the moving platform is supported and the fixed supporting leg is suspended. When the moving part is in the retracted position, the moving part is higher than the fixed supporting leg, and the fixed supporting leg supports the moving platform. The hydraulic source can provide the hydraulic supporting units with hydraulic oil with consistent pressure through the equalizing oil way, and drive the supporting parts at the bottom of the hydraulic supporting units to support the moving platform together with the fixed supporting leg. Through the cooperation of the moving mechanism, the fixed supporting leg and the adaptive hydraulic supporting device, efficient conversion between the movement flexibility and the supporting stability of the base is realized.

Description

Technical Field

[0001] This application relates to the field of machine tool accessories technology, specifically to a movable machine tool base and a machine tool. Background Technology

[0002] For traditional fixed machine tool processing equipment, to achieve high-precision machining, the equipment usually needs to be installed on a specially treated and compacted foundation. This type of foundation requires concrete pouring, compaction, and leveling to ensure that the surface flatness error is controlled within an extremely low range. At the same time, the bearing capacity of the foundation must match the weight and processing load of the machine tool during operation, thereby providing rigid support for the machine tool and preventing vibration, displacement, or tilting of the equipment during processing, thus ensuring that the dimensional accuracy of the parts meets the design requirements. However, the foundation treatment cost of fixed machine tools often accounts for a high proportion of the total equipment installation cost, and once the foundation is formed, the position of the machine tool cannot be adjusted, resulting in poor flexibility.

[0003] Therefore, the application of mobile machine tool processing equipment is becoming increasingly widespread. This type of equipment is mainly used to process large workpieces, such as ship components, large pressure vessels, and heavy machinery bases. These workpieces are large and heavy, making them difficult to transport to fixed machine tool stations. Therefore, mobile processing equipment needs to flexibly adjust its operating location according to the workpiece's position. However, there is a significant contradiction between the flexibility requirements and the stability requirements of mobile machine tool processing equipment: on the one hand, workshop floors, to meet the needs of material transportation and equipment movement, are usually only hardened at the base and not leveled with high precision, making the ground prone to problems such as local bumps, depressions, and tilts; on the other hand, mobile machine tool processing equipment typically weighs several tons to tens of tons, and dynamic loads such as cutting forces and impact forces are generated during processing. If the support is unstable, problems such as equipment tilting, resonance, and damage to the support structure can easily occur.

[0004] Currently, there are two main improvement methods for addressing the support issues of mobile machine tool processing equipment: one is to install adjustable bolt supports at the bottom of the equipment, and manually rotate the bolts to adjust the support height to adapt to ground undulations. However, this method is inefficient. For large equipment, multiple people need to work together to adjust multiple support points, and each adjustment takes a long time. Furthermore, it cannot guarantee that the force on each support point is uniform, and there is still a risk of unstable support. The second method is to use a pneumatic support device, which uses a pneumatic cylinder to adjust the support height. However, the rigidity of the pneumatic support is insufficient, and it is prone to compression deformation when subjected to dynamic loads. Moreover, the air pressure is greatly affected by temperature and leakage, making it difficult to maintain a stable support force for a long time. This method is not suitable for long-term continuous processing scenarios.

[0005] Therefore, there is currently a lack of a solution that can balance the flexibility and support stability of mobile machine tool processing equipment, and it is impossible to effectively deal with the impact of uneven workshop floors on processing accuracy. There is a need to develop a mobile machine tool base that can adapt to ground conditions and quickly achieve stable support. Utility Model Content

[0006] The purpose of this application is to overcome the shortcomings of existing mobile processing equipment, such as poor support stability and inability to adapt to uneven workshop floors, and to provide a movable machine tool base. Through a support structure that combines fixed support and adaptive hydraulic auxiliary support, the equipment can be stably supported under different ground conditions, thus ensuring processing accuracy.

[0007] The technical solution adopted in this application is as follows: A movable machine tool base includes: a movable platform; a movable mechanism including a movable component for moving the base and capable of raising and lowering in an extended and retracted position; a fixed support leg disposed at the bottom of the movable platform; and an adaptive hydraulic support device including a hydraulic source, a pressure equalizing circuit, and multiple hydraulic support units. When the movable component is in the extended position, it supports the movable platform and suspends the fixed support leg. When the movable component is in the retracted position, its lower end is higher than the fixed support leg, and the fixed support leg supports the movable platform. The hydraulic source can provide hydraulic oil at a uniform pressure to the multiple hydraulic support units through the pressure equalizing circuit, driving the support components at the bottom of each hydraulic support unit to jointly support the movable platform with the fixed support leg.

[0008] In this technical solution, the cooperation of the moving mechanism, fixed outriggers, and adaptive hydraulic support device achieves an efficient balance between mobility and stability of the base, solving the problem of traditional mobile machine tool support systems struggling to balance stability and flexibility. Specifically, the moving component can switch between an extended and a retracted position via lifting. In the extended position, it ensures free movement of the base. In the retracted position, the fixed outriggers provide initial stable support. Then, multiple hydraulic support units are controlled by a hydraulic source and pressure equalization circuit to drive the support component to contact the ground with consistent pressure. The support component and the fixed outriggers share the pressure, thus providing a high-rigidity and high-stability support foundation for the machine tool under different ground conditions, effectively suppressing machining vibration and ensuring machining accuracy.

[0009] The number of fixed support legs is three, and they are arranged in a triangular pattern at the bottom of the mobile platform.

[0010] In this technical solution, three fixed outriggers are arranged in a triangular pattern. Utilizing the geometric stability of a triangle, the machine tool can quickly obtain stable initial support after the moving parts are retracted. The triangular distribution can evenly distribute the weight of the equipment and the processing load, avoiding excessive local support stress that could lead to ground indentations or outrigger deformation. At the same time, the triangular support provides a stable reference for the precise movement of the subsequent hydraulic support unit, preventing equipment swaying during hydraulic support adjustments, further improving the overall reliability of the support system, and extending the service life of the contact parts between the fixed outriggers and the ground.

[0011] Some of the hydraulic support units are located within the triangular area defined by the fixed outrigger support point, while other hydraulic support units are located outside the triangular area.

[0012] In this technical solution, by placing some hydraulic support units within the triangular area defined by the fixed outriggers and others outside the area, the hydraulic support units within the area can specifically enhance the support strength of the load-concentrated area in the middle of the equipment, preventing the middle from sinking during processing. The hydraulic support units outside the area can expand the support coverage, balance the force on the edge of the equipment, and prevent the equipment from tilting due to the lack of support at the edge. The combination of the two makes the support force evenly distributed on the moving platform, adapting to the load requirements of different areas of large machine tools, further optimizing support stability, and adapting to more complex processing load scenarios.

[0013] The hydraulic support unit includes a first hydraulic cylinder, and the support member is connected to the end of the piston rod of the hydraulic cylinder via a ball joint structure.

[0014] In this technical solution, the first hydraulic cylinder provides a stable driving force for the support component, ensuring that the support component can accurately extend and retract to adapt to the ground height; the ball joint structure allows the support component to adaptively adjust the contact angle according to the ground tilt angle, so that even if there are bumps or depressions in the ground, the support component can fully fit with the ground, forming a stable and non-misaligned support contact, avoiding excessive local stress caused by point contact, while reducing the lateral force of uneven ground on the cylinder piston rod, preventing cylinder deformation or leakage, extending the service life of the hydraulic support unit, and improving the reliability of the support.

[0015] The hydraulic support unit also includes a locking mechanism for restricting the retraction of the piston rod and the rotation of the ball joint structure after the support member contacts the ground.

[0016] In this technical solution, a locking mechanism is set up to simultaneously lock the retraction of the piston rod and the rotation of the ball joint after the support component contacts the ground. This prevents the piston rod from retracting unexpectedly due to vibration during processing, or the ball joint structure from shifting at an angle due to external force. This ensures that the support height and support angle remain stable, preventing the equipment from deviating from its processing position due to changes in the support state. At the same time, the locking mechanism can transform the entire hydraulic support unit from an adjustable flexible state to an absolutely rigid mechanical structure, enhancing the overall rigidity of the support system, reducing the transmission of processing vibration, and further ensuring processing accuracy. This is especially suitable for long-term continuous processing or high-load processing scenarios.

[0017] The moving component is an omnidirectional wheel, and the moving mechanism further includes a lifting mechanism for driving the moving component to rise and fall, and a drive motor for driving the moving component to roll.

[0018] In this technical solution, the moving parts are designed as omnidirectional wheels, which, together with the lifting mechanism that drives their lifting and the drive motor that drives their rolling, allow the equipment to move flexibly in any direction within the workshop. Compared with traditional directional wheels, this significantly improves the flexibility of movement and adapts to the adjustment needs of different processing positions for large workpieces. The lifting mechanism ensures that the omnidirectional wheels can accurately switch between extending to support and retracting to disengage from support, while the drive motor provides automated drive for the omnidirectional wheels, avoiding the tediousness and effort of manually pushing the equipment and improving the efficiency of equipment movement.

[0019] The lifting mechanism includes a guide rail, a slider that slides with the guide rail, and a second hydraulic cylinder that drives the slider to move. The drive motor is mounted on the slider, and the moving part is mounted on the output shaft of the drive motor.

[0020] In this technical solution, the lifting mechanism adopts a drive method of guide rail slider in conjunction with a second hydraulic cylinder. It has a compact structure, smooth transmission, and can provide huge locking force to ensure that the omnidirectional wheel can be firmly held in the retracted position after being lifted, preventing accidental fall during processing. The integrated design of the drive motor mounted on the slider simplifies the structure and improves the transmission efficiency.

[0021] The mobile platform includes multiple crossbeams and multiple longitudinal beams, which are vertically connected to form a frame structure with multiple grids. Multiple mobile mechanisms are distributed within the grids formed by the crossbeams and longitudinal beams.

[0022] In this technical solution, the mobile platform adopts a frame structure composed of intersecting horizontal and vertical beams. Compared with the integral platform, this structure achieves lightweighting while ensuring overall rigidity and load-bearing strength. The frame design provides space for the rational distribution of components such as the mobile mechanism and support units, which is conducive to the uniform transmission of load and the optimization of the overall layout of the system.

[0023] The hydraulic power source and the machine tool control cabinet are integrated and located at one end of the mobile platform along its width.

[0024] In this technical solution, the hydraulic power source and control cabinet are integrated at one end of the mobile platform along its width, making reasonable use of the platform's edge space and avoiding occupying the machine tool installation area in the middle of the platform, thus providing ample installation space for large machine tools. The integrated installation facilitates the connection of the wiring and oil circuits between the two, reducing pipeline length and layout complexity, and lowering the risk of leakage or wiring failure. At the same time, the edge location facilitates the later inspection and maintenance of the hydraulic power source and control cabinet, allowing maintenance operations to be performed without disassembling the machine tool, reducing equipment downtime for maintenance and improving production efficiency.

[0025] The machine tool provided in this application includes a movable base as described above.

[0026] In this technical solution, the base is applied to the machine tool, which directly improves the machine tool's site adaptability and functional flexibility, enabling the machine tool to be easily moved to the side of large workpieces for on-site processing, while also achieving support rigidity and processing accuracy close to that of a fixed machine tool, thus expanding the application scenarios of the machine tool. Attached Figure Description

[0027] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings: Figure 1 This is an isometric view of the movable base of the machine tool provided in the embodiments of this application; Figure 2 This is a bottom view of the movable base of the machine tool provided in the embodiment of this application; Figure 3 This is a front view of the movable base of the machine tool provided in an embodiment of this application; Figure 4 for Figure 3 Enlarged view of point A in the middle; Figure 5 This is a schematic diagram of the structure of the moving mechanism provided in the embodiment of this application.

[0028] List of components and reference numerals: 1 mobile platform, 11 crossbeams, 12 longitudinal beams; 2. Moving mechanism, 21. Moving part, 22. Drive motor, 23. Guide rail, 24. Slider, 25. Second hydraulic cylinder; 3. Fixed outriggers; 4. Hydraulic power source; 5. Hydraulic support unit; 51. Support component; 52. First hydraulic cylinder; 6. Control cabinet. Detailed Implementation

[0029] To more clearly illustrate the overall concept of this application, a detailed explanation is provided below with reference to the accompanying drawings.

[0030] Many specific details are set forth in the following description in order to provide a full understanding of this application. However, this application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of this application is not limited to the specific embodiments disclosed below.

[0031] Furthermore, it should be understood in the description of this application that the terms "upper," "lower," "top," "bottom," "inner," "outer," "axial," "radial," "circumferential," "lateral," and "longitudinal," 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 application 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 application.

[0032] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0033] In this application, unless otherwise expressly specified and limited, the "above" or "below" of the second feature can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. In the description of this specification, references to terms such as "an embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described can be combined in any suitable manner in one or more embodiments or examples.

[0034] In the embodiments of this application, reference is made to Figures 1 to 5This application provides a movable base for a machine tool. For ease of explanation and understanding, the following descriptions are based on the illustrated product structure. Of course, those skilled in the art will understand that the above structure is merely a specific example and illustrative illustration, and does not constitute a specific limitation on the technical solution provided in this application.

[0035] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the movable base of the machine tool includes a movable platform 1, a movable mechanism 2, fixed legs 3, and an adaptive hydraulic support device. The movable mechanism 2 includes a movable component 21, which is used to move the base and can be raised and lowered in the extended and retracted positions. The fixed legs 3 are located at the bottom of the movable platform 1. The adaptive hydraulic support device includes a hydraulic source 4, a pressure equalization oil circuit, and multiple hydraulic support units 5. When the movable component 21 is in the extended position, it supports the movable platform 1 and suspends the fixed legs 3. When the movable component 21 is in the retracted position, its lower end is higher than the fixed legs 3, and the fixed legs 3 support the movable platform 1. The hydraulic source 4 can provide hydraulic oil with consistent pressure to the multiple hydraulic support units 5 through the pressure equalization oil circuit, driving the support components 51 at the bottom of each hydraulic support unit 5 to jointly support the movable platform 1 with the fixed legs 3.

[0036] In this application, a mobile mechanism 2, a fixed support leg 3, and an adaptive hydraulic support device are integrated on a mobile platform 1 to form an integrated base for both movement and support. This achieves an efficient conversion between mobility and support stability, solving the problem that traditional mobile machine tools cannot balance support stability and flexibility.

[0037] Specifically, the movable component 21 can switch between two key states through lifting and lowering. When the movable component 21 is in the extended position, it can support the movable platform 1 and suspend the fixed leg 3 in the air. At this time, the equipment can be flexibly moved to the side of the workpiece, avoiding the problem of fixed position and difficult workpiece handling of traditional fixed machine tools. When the movable component 21 is in the retracted position, its lower end is higher than the fixed leg 3, and the fixed leg 3 then contacts the ground to support the movable platform 1, realizing a rapid switch from the moving state to the supporting state. There is no need to manually disassemble or replace the supporting components. Compared with the traditional manual adjustment of bolt supports, the switching efficiency is greatly improved.

[0038] Hydraulic source 4 supplies hydraulic oil at a uniform pressure to each hydraulic support unit 5 through a pressure equalization circuit. This ensures uniform support force across all hydraulic support units 5, preventing overload or under-support issues caused by ground depressions or elevations. For example, when the workshop floor is uneven, the uniformly pressurized hydraulic oil will drive the support component 51 of the corresponding hydraulic support unit 5 to extend a longer distance until it contacts the ground and maintains equal support force, effectively offsetting the support differences caused by uneven ground and preventing equipment tilting. Specifically, hydraulic source 4 can be a variable vane pump hydraulic station, a fixed displacement piston pump hydraulic station, etc. The pressure equalization circuit is preferably a parallel circuit, with each circuit connected to one hydraulic support unit 5. The parallel oil circuit can achieve pressure balance by setting check valves and throttle valves on each branch of the main oil circuit. The hydraulic oil output from the hydraulic source 4 first enters the main oil circuit, and then is delivered to each hydraulic support unit 5 through the parallel oil circuit. The throttle valve of each parallel oil circuit can finely adjust the flow rate to ensure that the pressure deviation of each branch is lower than the preset value, meet the requirement of providing hydraulic oil with consistent pressure, and avoid overload of some support units due to uneven ground.

[0039] In practical use, when the equipment is moved to the processing station of a large workpiece, the moving part 21 retracts, the fixed support leg 3 first contacts the ground to provide basic support, and then the support part 51 of the hydraulic support unit 5 extends synchronously under the action of the pressure equalization oil circuit, together with the fixed support leg 3 to support the moving platform 1 and bear the pressure together. Thus, it can provide a high rigidity and high stability support foundation for the machine tool under different ground conditions, effectively suppress processing vibration and ensure processing accuracy.

[0040] This application does not limit the number of fixed legs 3. As a preferred embodiment of this application, such as Figure 2 As shown, there are three fixed outriggers 3, arranged in a triangular pattern at the bottom of the mobile platform 1. Those skilled in the art will understand that a triangular structure has the characteristic of a uniquely defined plane, avoiding platform swaying due to insufficient outriggers or partial outrigger suspension due to uneven ground caused by excessive outriggers. By setting three fixed outriggers 3 in a triangular arrangement, utilizing the geometric stability of a triangle, after the moving part 21 retracts, the three fixed outriggers 3 contact the ground, allowing the machine tool to quickly obtain stable initial support. The triangular distribution evenly distributes the weight of the equipment and the processing load, preventing excessive local support stress that could lead to ground indentations or outrigger deformation. Simultaneously, the triangular support provides a stable reference for the precise movement of the subsequent hydraulic support unit 5, preventing equipment swaying during hydraulic support adjustments, further improving the overall reliability of the support system, and extending the service life of the outrigger contact points with the ground. This application does not specifically limit the location of the fixed outriggers 3; for example, the three fixed outriggers 3 can be evenly distributed around the center of the mobile platform 1, or... Figure 3As shown, two of the fixed support legs 3 are positioned at the two corners of the mobile platform 1, and a third fixed support leg 3 is equidistant from the two fixed support legs 3. That is, the line connecting the center points of the three fixed support legs 3 forms an isosceles triangle. Preferably, the main body of the fixed support leg 3 can be a steel structure, for example, consisting of a solid steel support column, a bottom wear-resistant contact layer, and a top connecting flange. The support column ensures high strength to bear the weight of the equipment itself, the bottom wear-resistant contact layer uses a nitrile rubber pad or a wear-resistant steel plate, and the top is bolted to the bottom of the mobile platform 1 via a flange.

[0041] Furthermore, some hydraulic support units 5 are located within the triangular area defined by the support point of the fixed outrigger 3, while other hydraulic support units 5 are located outside the triangular area. For example... Figure 3 As shown, the central support points of the three fixed legs 3 are connected by dashed lines, forming a triangular area. This area is the core load zone of the mobile platform 1. For example, the area directly above this zone is where the machine tool spindle and tool magazine are installed, and it bears the largest load during machining. Setting up hydraulic support units 5 here can specifically enhance the support strength of the core area and prevent the middle from sinking during machining. Outside the triangular area is the area near the edge of the platform. Without support at the edge, the edge of the equipment is prone to tilting. The hydraulic support units 5 located outside this area can expand the support coverage, balance the force on the edge of the equipment, and prevent the equipment from tilting due to the lack of edge support. The combination of the two makes the support force evenly distributed on the mobile platform 1, adapting to the load requirements of different areas of large machine tools, further optimizing support stability, and adapting to more complex machining load scenarios.

[0042] As a preferred embodiment of this application, such as Figure 4As shown, the hydraulic support unit 5 includes a first hydraulic cylinder 52, and a support member 51 is connected to the end of the piston rod of the hydraulic cylinder via a ball joint structure. The ball joint structure is not shown in the attached figure, but it can employ existing mature technologies. For example, the ball joint structure mainly consists of a ball joint rod and a ball joint seat. The upper end of the ball joint rod has a ball head, and the lower end is fixedly connected to the support member 51. The ball joint seat is fixedly installed at the end of the piston rod of the hydraulic cylinder, and its interior has a spherical cavity adapted to the ball head, allowing the ball head to be rotatably accommodated within this spherical cavity. Through this connection method, the support member 51 can oscillate omnidirectionally relative to the piston rod within a certain cone angle range. When the support member 51 contacts an uneven surface, under the action of the ground reaction force, the ball head of the ball joint rod will undergo slight sliding and rotation within the spherical cavity of the ball joint seat. This action allows the support member 51 to adaptively adjust its bottom angle, ensuring full-area contact with the ground, thus providing an initial, stress-free, and stable contact point for the entire mobile platform 1. The first hydraulic cylinder 52 provides a stable linear driving force to the support member 51, ensuring precise extension and retraction to adapt to ground height. For example, when there is a protrusion in the workshop floor, the cylinder piston rod can shorten accordingly to maintain contact with the ground; when there is a depression, the piston rod can extend to fill the depression. The ball joint structure allows the support member 51 to adjust its angle within a certain range around the piston rod end, adapting to inclined or locally protruding ground. When the ground is inclined, the support member 51 can automatically rotate via the ball joint, ensuring full contact between the bottom of the support member 51 and the ground, avoiding the point contact problems caused by traditional rigid connections. Point contact can lead to excessive local stress and ground cracking; while the surface contact achieved by the ball joint structure reduces contact stress, protecting the ground while improving support stability. Therefore, by setting a ball joint structure, a stable and non-misaligned support contact is achieved between the support member 51 and the ground, avoiding excessive local stress caused by point contact. At the same time, it reduces the lateral force of uneven ground on the cylinder piston rod, prevents cylinder deformation or leakage, extends the service life of the hydraulic support unit 5, and improves the reliability of the support.

[0043] In a preferred embodiment, the hydraulic support unit 5 further includes a locking mechanism to restrict the retraction of the piston rod and the rotation of the ball joint structure after the support member 51 contacts the ground. After the support member 51 contacts the ground, the locking mechanism locks the piston rod position, preventing accidental retraction due to vibration during processing. After the support member 51 contacts the ground and the angle is adjusted, the locking mechanism fixes the rotation angle of the ball joint structure, preventing angle deviation due to changes in processing load, ensuring the support height and angle remain stable, and preventing processing position deviations due to changes in support status. The locking mechanism transforms the entire hydraulic support unit 5 from an adjustable, flexible state into an absolutely rigid mechanical structure, enhancing the overall rigidity of the support system, reducing processing vibration transmission, and further ensuring processing accuracy, making it particularly suitable for long-term continuous processing or high-load processing scenarios.

[0044] The attached diagram does not show the locking mechanism, but existing mature technologies can also be used. A simple way to limit the retraction of the piston rod is to use a hydraulic lock; another preferred embodiment is a threaded locking mechanism. This locking mechanism specifically includes a locking nut and a cylinder head with external threads. The cylinder head is fixed to the end of the cylinder barrel of the first hydraulic cylinder 52. The piston rod passes through the central hole of the cylinder head. The locking nut is screwed onto the external threads of the cylinder head. The working process is as follows: When the hydraulic oil drives the piston rod to extend and the support 51 contacts the ground, the hydraulic system maintains a certain pressure. At this time, the locking nut is rotated clockwise, causing it to move along the threads of the cylinder head towards the hydraulic cylinder until the end face of the locking nut tightly abuts against the root of the piston rod or a shoulder fixed to the piston rod. By continuously tightening the locking nut, a huge mechanical locking force is generated, thereby mechanically preventing the piston rod from retracting and achieving locking of the axial movement of the piston rod. Another approach is to use a radial locking structure. For example, one or more locking screws can be radially mounted on the cylinder head, with the axes of these screws perpendicular to the piston rod axis. When locking is required, these locking screws are tightened with a tool so that their tips directly press against the piston rod body, using friction to lock the piston rod in place.

[0045] For locking the ball joint structure, the outer side of the ball head seat of the ball joint structure also has external threads and is equipped with a ball joint locking nut. When the support 51 adapts to the ground, this nut is in a loose state. When locking is required, tightening the ball joint locking nut will cause its inner end face to press against the locking sleeve at the end of the ball head seat, causing the inner cavity of the ball head seat to contract, thereby locking the ball head of the ball joint rod from all sides and restricting its rotation in any direction. Another method is to set a ball joint locking screw radially on the side wall of the ball head seat. Tightening this screw will cause its tip to directly abut against the surface of the ball head rod, thereby restricting the rotation of the ball head.

[0046] As a preferred embodiment of this application, such as Figure 1 and Figure 5As shown, the moving component 21 is an omnidirectional wheel. The moving mechanism 2 also includes a lifting mechanism for driving the moving component 21 to rise and fall, and a drive motor 22 for driving the moving component 21 to roll. The omnidirectional wheel can move in multiple directions, such as laterally and diagonally. Compared with traditional directional wheels, it greatly improves the mobility of the equipment in narrow workshops and adapts to the adjustment needs of different processing positions of large workpieces. The lifting mechanism ensures that the omnidirectional wheel can accurately switch between extending to support and retracting to disengage from support. The drive motor 22 provides automated drive for the omnidirectional wheel, avoiding the tediousness and effort of manually pushing the equipment and improving the efficiency of equipment movement.

[0047] Furthermore, such as Figure 5 As shown, the lifting mechanism includes a guide rail 23, a slider 24 that slides with the guide rail 23, and a second hydraulic cylinder 25 that drives the slider 24. A drive motor 22 is mounted on the slider 24, and a moving part 21 is mounted on the output shaft of the drive motor 22. The lifting mechanism uses a drive method where the guide rail 23 and slider 24 cooperate with the second hydraulic cylinder 25. The cooperation between the guide rail 23 and slider 24 ensures that the omnidirectional wheel rises and falls smoothly in the vertical direction, avoiding lateral deviation during the lifting process. The second hydraulic cylinder 25 provides a strong and stable driving force, ensuring that the slider 24 rises and falls at a uniform speed, preventing equipment vibration caused by fluctuations in speed. The lifting mechanism has a compact overall structure, smooth transmission, and provides a large locking force, ensuring that the omnidirectional wheel is firmly held in the retracted position after being lifted, preventing accidental fall during processing. The integrated design of the drive motor 22 mounted on the slider 24 simplifies the structure and improves transmission efficiency.

[0048] As a preferred embodiment of this application, such as Figure 1 As shown, the mobile platform 1 includes multiple crossbeams 11 and multiple longitudinal beams 12. The crossbeams 11 and longitudinal beams 12 are vertically connected to form a frame structure with multiple grids. Multiple moving mechanisms 2 are distributed within the grids formed by the crossbeams 11 and longitudinal beams 12. Specifically, guide rails 23 can be fixed to the inner wall of the grid, and second hydraulic cylinders 25 are also located in the grid positions. The mobile platform 1 can have multiple rows of moving mechanisms 2 arranged front and rear, with at least two in each row to ensure stability. Compared with an integral platform, the frame structure achieves lightweighting while ensuring overall rigidity and load-bearing strength; the grid design provides space for the rational distribution of components such as moving mechanisms 2 and support units, which is conducive to the uniform transmission of load and the optimization of the overall system layout. Preferably, both the crossbeams 11 and longitudinal beams 12 can be made of high-strength steel plates and connected by welding.

[0049] Furthermore, the hydraulic power source 4 and the machine tool control cabinet 6 are integrated at one end of the moving platform 1 along its width. This end is typically a non-processing area. Integrating the hydraulic power source 4 and control cabinet 6 here avoids occupying the machine tool installation space in the middle of the platform. Simultaneously, integrated installation shortens the length of hydraulic lines and wires, reducing the risk of pipeline leaks and wire resistance losses, thus lowering the equipment failure rate. After the hydraulic power source 4 and control cabinet 6 are integrated, maintenance personnel can directly perform maintenance at one end of the platform without disassembling the machine tool equipment on the platform, reducing equipment downtime for maintenance and improving production efficiency.

[0050] This application provides a machine tool including the movable base described above. Although not specifically shown in the accompanying drawings, the type of machine tool is not limited in detail. The movable base of this application is of reference value to most mobile machine tool equipment on the market. By applying this movable base, the site adaptability and functional flexibility of the machine tool are directly improved, enabling the machine tool to be easily moved next to large workpieces for on-site processing, while achieving support rigidity and processing accuracy close to that of a fixed machine tool, thus expanding the application scenarios of the machine tool.

[0051] For any parts not mentioned in this application, existing technologies may be used or referenced.

[0052] The various embodiments in this specification are described in a progressive manner. The same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on describing the differences from other embodiments.

[0053] The above description is merely an embodiment of this application and is not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. A movable base for a machine tool, comprising a movable platform, characterized in that, Also includes: A moving mechanism, comprising a moving element for moving the base and capable of lifting and lowering in an extended position and a retracted position; Fixed support legs are located at the bottom of the mobile platform; An adaptive hydraulic support device includes a hydraulic power source, a pressure equalization circuit, and multiple hydraulic support units; When the movable component is in the extended position, it supports the mobile platform and suspends the fixed support leg; when the movable component is in the retracted position, its lower end is higher than the fixed support leg, and the fixed support leg supports the mobile platform; the hydraulic source can provide hydraulic oil with consistent pressure to multiple hydraulic support units through the pressure equalization oil circuit, driving the support component at the bottom of each hydraulic support unit and the fixed support leg to jointly support the mobile platform.

2. The movable machine tool base according to claim 1, characterized in that, The number of fixed support legs is three, and they are arranged in a triangular pattern at the bottom of the mobile platform.

3. The movable machine tool base according to claim 2, characterized in that, Some of the hydraulic support units are located within the triangular area defined by the fixed outrigger support point, while other hydraulic support units are located outside the triangular area.

4. The movable machine tool base according to claim 1, characterized in that, The hydraulic support unit includes a first hydraulic cylinder, and the support member is connected to the end of the piston rod of the hydraulic cylinder via a ball joint structure.

5. The movable machine tool base according to claim 4, characterized in that, The hydraulic support unit also includes a locking mechanism for restricting the retraction of the piston rod and the rotation of the ball joint structure after the support member contacts the ground.

6. The movable machine tool base according to claim 1, characterized in that, The moving component is an omnidirectional wheel, and the moving mechanism further includes a lifting mechanism for driving the moving component to rise and fall, and a drive motor for driving the moving component to roll.

7. The movable machine tool base according to claim 6, characterized in that, The lifting mechanism includes a guide rail, a slider that slides with the guide rail, and a second hydraulic cylinder that drives the slider to move. The drive motor is mounted on the slider, and the moving part is mounted on the output shaft of the drive motor.

8. The movable machine tool base according to claim 1, characterized in that, The mobile platform includes multiple crossbeams and multiple longitudinal beams, which are vertically connected to form a frame structure with multiple grids. Multiple mobile mechanisms are distributed within the grids formed by the crossbeams and longitudinal beams.

9. The movable machine tool base according to claim 8, characterized in that, The hydraulic power source and the machine tool control cabinet are integrated and located at one end of the mobile platform along its width.

10. A machine tool, characterized in that, Includes a movable base for a machine tool as described in any one of claims 1 to 9.

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