A fully automatic multifunctional liquid handling system

Abstract

This utility model discloses a fully automatic multifunctional liquid handling system, relating to the field of medical devices. It includes a translation frame and a lifting module, a shaker, a waste liquid collection assembly, a centrifuge tube support assembly, and a suction head support assembly mounted on the translation frame. The lifting module has a multi-channel pipette group and a single-channel pipette group. Below the multi-channel pipette group, the translation frame has a carrier switching platform, and the translation frame is equipped with a linear transmission mechanism to drive the movement of each component. The multi-channel pipette group includes 96-channel and 4-channel pipettes, and the single-channel pipette group features various unique designs such as variable-range single-channel pipettes. This application achieves the technical effects of fully automatic multifunctional liquid handling, meeting different pipetting needs, improving liquid handling efficiency and flexibility, facilitating operation and maintenance, and being applicable to various liquid handling scenarios.

Description

Technical Field

[0001] This utility model relates to the technical field of medical devices, and more specifically, to a fully automatic multifunctional liquid handling system. Background Technology

[0002] With the rapid development of life sciences, the scale and complexity of biological experiments worldwide have reached unprecedented levels. Domestically, biological experiments are also springing up frequently, particularly in cutting-edge fields such as cell culture, virus experiments, and bacterial experiments, where research is continuously expanding and deepening. However, as experimental demands explode, existing experimental equipment and methods are gradually proving inadequate in meeting increasingly complex and diverse experimental requirements, revealing many problems that urgently need to be addressed.

[0003] In traditional biological experimental procedures, key steps such as adding, pipetting, separating, and aspirating liquids during cell culture, virus experiments, and bacterial experiments have always relied on manual labor by the experimenters. They skillfully use simple tools like droppers and pipettes to carefully add the necessary reagents to various containers such as petri dishes and test tubes, or precisely aspirate liquids from these containers and transfer them to designated containers. When dispensing liquids, they meticulously control the volume of liquid injected according to the specific experimental requirements, accurately injecting a specific amount of liquid into different containers. Furthermore, when faced with consumables of different specifications, experimenters need to perform additional adjustments and adaptations to ensure the smooth progress of the experiment. This manual operation method, based on accumulated practical experience, has been the most familiar and commonly used experimental technique for a considerable period of time, widely applied in various biological experimental scenarios.

[0004] However, this traditional manual operation method has significant drawbacks. First, the numerous repetitive operations during experiments easily lead to both physical and mental fatigue for researchers, resulting in a significant decrease in work efficiency and making it impossible to meet the demands of the ever-increasing number of experimental tasks. Second, the consumables involved in biological experiments are not only diverse and complex in specifications but also used in huge quantities, which undoubtedly increases the cost of consumable procurement and the difficulty of management, while also wasting resources. Third, the relatively slow speed of manual operation greatly prolongs the entire experimental cycle, seriously affecting the progress of scientific research and making it impossible to keep up with the rapidly developing research pace. Most importantly, this operation method is difficult to conduct in a biocabinet, which makes it difficult to effectively guarantee the safety and stability of the experimental environment, which may adversely affect the accuracy and reliability of experimental results.

[0005] In summary, how to develop a liquid handling system that can replace manual operation, realize automatic functions such as liquid transfer, separation, addition, and aspiration, while being compatible with multiple carriers, improving work efficiency, and ensuring a safe and stable experimental environment is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0006] In view of this, the purpose of this utility model is to provide a fully automatic multi-functional liquid handling system that effectively solves the problems of large workload and limited functions in manual liquid handling.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A fully automatic multi-functional liquid handling system includes a translation frame and a lifting module, a shaker, a waste liquid collection assembly, a centrifuge tube support assembly, and a suction head support assembly disposed on the translation frame. The lifting module is provided with a multi-channel pipette group and a single-channel pipette group. The translation frame is provided with a carrier switching platform located below the multi-channel pipette group.

[0009] The translation frame is equipped with a linear transmission mechanism to drive the lifting module, the shaker, the waste liquid collection assembly, the centrifuge tube carrying assembly, the liquid suction head carrying assembly, and the carrier switching platform to move respectively.

[0010] Preferably, the multichannel pipette assembly includes a 96-channel pipette and a 4-channel pipette respectively disposed on the lifting module.

[0011] Preferably, the 4-channel pipette includes four independently controlled pipetting units, and the horizontal spacing of each pipetting unit is adjusted by a linear slide rail mechanism.

[0012] Preferably, the single-channel pipette assembly includes multiple variable-range single-channel pipettes respectively disposed on the lifting module.

[0013] Preferably, the variable range single-channel pipette is provided with an angle adjustment mechanism, which rotates the support base to deflect the pipette tip of the variable range single-channel pipette relative to the horizontal plane.

[0014] Preferably, the carrier switching platform includes a rotary drive mechanism and a ring-shaped carrier positioning fixture, the surface of which is provided with positioning grooves.

[0015] Preferably, the waste liquid collection assembly includes two interfaces located at the bottom of the translation frame, one of which is a liquid filling interface and the other is a liquid draining interface.

[0016] Preferably, the centrifuge tube support assembly includes a multi-specification centrifuge tube placement rack disposed on the translation frame. The multi-specification centrifuge tube placement rack includes multiple layers of detachable trays, each layer of the detachable trays corresponding to centrifuge tubes of different specifications. The surface of the detachable trays is provided with anti-slip protrusions.

[0017] Preferably, the suction head carrier assembly includes a rotating carrier plate and a pickup mechanism, and the surface of the rotating carrier plate is provided with a snap-fit ​​positioning structure that matches a standard suction head box.

[0018] Preferably, the shaking table includes a base and an tiltable support platform, wherein the support platform is connected to the base by a hydraulic rod to tilt the support platform.

[0019] This utility model provides a fully automatic multi-functional liquid processing system. In this system, a translational frame serves as the overall mounting platform, on which are mounted a lifting module, a shaker, a waste liquid collection assembly, a centrifuge tube support assembly, and a suction head support assembly. The lifting module is equipped with a multi-channel pipette assembly and a single-channel pipette assembly. A carrier switching platform is located on the translational frame below the multi-channel pipette assembly. The translational frame is equipped with a linear transmission mechanism, allowing the lifting module, shaker, waste liquid collection assembly, centrifuge tube support assembly, suction head support assembly, and carrier switching platform to move independently. During operation, the linear transmission mechanism drives each component to the appropriate position. The multi-channel and single-channel pipette assemblies move up and down under the drive of the lifting module, enabling operations such as liquid aspiration and addition on the carrier switching platform. The shaker can perform corresponding shaking or tilting operations to assist in processing. The waste liquid collection assembly collects waste liquid. The centrifuge tube support assembly holds centrifuge tubes of different sizes for liquid processing. The suction head support assembly allows for changing the suction heads of the pipettes. This design allows for flexible allocation of components throughout the system, solving the problems of high workload and limited functionality in manual liquid handling, and offering the benefits of high efficiency and reduced workload. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the overall structure of the liquid handling system in this embodiment.

[0022] The reference numerals in the figures include:

[0023] 1. 96-channel pipette; 2. 4-channel pipette; 3. Variable range single-channel pipette; 4. Waste liquid collection assembly; 5. Carrier switching platform; 6. Shaker; 7. Multi-size centrifuge tube rack; 8. Rotary tray; 9. Translation frame. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Unless otherwise defined, the technical or scientific terms used in this application shall have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar words used in this utility model do not indicate any order, quantity, or importance. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship can also change accordingly. This application discloses a fully automated multifunctional liquid handling system.

[0026] The core of this invention is to provide a fully automatic, multifunctional liquid handling system.

[0027] Please refer to Figure 1 .

[0028] The fully automatic multifunctional liquid handling system provided by this utility model includes a translation frame 9 and a lifting module, a shaker 6, a waste liquid collection assembly 4, a centrifuge tube support assembly, and a suction head support assembly mounted on the translation frame 9. The lifting module is equipped with a multi-channel pipette assembly and a single-channel pipette assembly. The translation frame 9 is located below the multi-channel pipette assembly and has a carrier switching platform 5. The translation frame 9 is equipped with a linear transmission mechanism to drive the lifting module, shaker 6, waste liquid collection assembly 4, centrifuge tube support assembly, suction head support assembly, and carrier switching platform 5 to move respectively.

[0029] Specifically, in this fully automated multifunctional liquid handling system, the translation frame 9 serves as the overall mounting platform, on which are mounted a lifting module, a shaker 6, a waste liquid collection assembly 4, a centrifuge tube support assembly, and a suction head support assembly. The lifting module is equipped with a multi-channel pipette assembly and a single-channel pipette assembly, and a carrier switching platform 5 is located on the translation frame 9 below the multi-channel pipette assembly. The linear drive mechanism equipped in the translation frame 9 allows the lifting module, shaker 6, waste liquid collection assembly 4, centrifuge tube support assembly, suction head support assembly, and carrier switching platform 5 to move independently.

[0030] During operation, the linear transmission mechanism drives each component to move to the appropriate position. The multi-channel pipette group and the single-channel pipette group move up and down under the drive of the lifting module, which can perform operations such as liquid aspiration and liquid addition on the carrier switching platform 5. The shaker 6 can perform corresponding shaking or tilting operations to assist in the processing. The waste liquid collection component 4 collects waste liquid. The centrifuge tube carrier component holds centrifuge tubes of different specifications to cooperate with liquid processing. The aspiration head carrier component allows for the replacement of aspiration heads for the pipettes.

[0031] It should be noted that, in addition to the lifting module, the movement of the above-mentioned module can also be achieved by means of screw drive, chain drive, etc.

[0032] The aforementioned fully automatic multi-functional liquid handling system effectively solves the problems of large workload and limited functionality in manual liquid handling, and has the beneficial effects of high efficiency and reduced workload.

[0033] The fully automatic multifunctional liquid handling system provided by this utility model will be described in more detail below with reference to the accompanying drawings and specific embodiments.

[0034] In one specific implementation, reference is made to... Figure 1 The multichannel pipette assembly includes a 96-channel pipette 1 and a 4-channel pipette 2, which are respectively mounted on the lifting module.

[0035] Specifically, both the 96-channel pipette 1 and the 4-channel pipette 2 are mounted on the lifting module. When liquid processing is required, if a specific type of medium, such as a 96-well plate, is used, the 96-channel pipette 1 can be activated to perform multi-channel operations simultaneously, quickly and efficiently completing actions such as adding and aspirating liquid, suitable for large-scale, high-throughput experiments. For other medium-sized plates or consumables of different specifications, the 4-channel pipette 2 takes over. Its four independently controllable channels allow for selection of single-channel, two-channel, three-channel, or four-channel operating modes according to actual task requirements. This configuration allows the liquid handling system to flexibly adjust the pipette usage according to different mediums and tasks, improving system compatibility and increasing liquid handling efficiency, avoiding the tediousness and inefficiency of manual operation.

[0036] It should be noted that the 96-channel pipette is generally made of metal or high-strength plastic, and has a sophisticated piston structure and tubing system inside, which can precisely control the aspiration and dispensing of liquids.

[0037] Furthermore, the 4-channel pipette 2 includes four independently controlled pipetting units, each of which has its horizontal spacing adjusted via a linear slide mechanism.

[0038] Specifically, the 4-channel pipette 2 comprises four independently controlled pipetting units, each with adjustable horizontal spacing via a linear guide mechanism. Each pipetting unit can be individually controlled for aspiration and dispensing. The pipetting units are typically driven by a miniature motor that moves a piston to achieve liquid aspiration and dispensing. The linear guide mechanism usually consists of a guide rail and a slider. The slider is connected to the pipetting unit, and the motor drives the slider to slide along the guide rail, thereby changing the spacing between the pipetting units to accommodate different sized media. The linear guide mechanism can also be replaced by a synchronous belt drive mechanism.

[0039] The above configuration allows the 4-channel pipette 2 to flexibly adjust the horizontal spacing of each pipetting unit according to different carrier specifications and task requirements. For example, when dealing with well plates with different well spacings, the spacing of the pipetting units can be precisely adjusted to adapt to them. This effectively improves the compatibility and applicability of the 4-channel pipette 2, making it suitable for liquid handling of more different carrier specifications, and enhancing the working efficiency and flexibility of the entire liquid handling system.

[0040] Based on any of the above embodiments, refer to Figure 1 The single-channel pipette assembly includes multiple variable-range single-channel pipettes 3, each mounted on a lifting module.

[0041] Specifically, the variable-range single-channel pipette 3 is mounted on the lifting module, allowing for vertical movement. In practical applications, it can be used with different carriers on the carrier switching platform 5 to perform liquid aspiration and addition operations. For example, when a culture dish carrier is placed on a shaker 6, and the shaker 6 is tilted, the variable-range single-channel pipette 3 can be moved horizontally to aspirate and add liquid; it can also be moved to the multi-size centrifuge tube rack 7 for aspiration before dispensing. If a disposable pipette tip needs to be replaced, it can be moved to the pipette tip support assembly for replacement. This setup and operating method allow the system to adapt to different working conditions and carriers, expanding its applicability and improving the flexibility and efficiency of liquid handling.

[0042] Furthermore, the variable range single-channel pipette 3 is equipped with an angle adjustment mechanism, which rotates the support base to deflect the pipette tip of the variable range single-channel pipette 3 relative to the horizontal plane.

[0043] Specifically, the aforementioned angle adjustment mechanism allows the variable-range single-channel pipette 3 to move horizontally and vertically, and also adjust its tilt angle to adapt to special working conditions. The angle adjustment mechanism rotates the support base to deflect the pipette tip of the variable-range single-channel pipette 3 relative to the horizontal plane. The pipette body of the variable-range single-channel pipette 3 is generally made of lightweight and corrosion-resistant engineering plastic, and contains an internal knob or button for adjusting the volume. The volume is changed by adjusting the stroke of the internal piston. The rotating support base typically consists of bearings and a bracket. A motor drives the bearings to rotate, causing the pipette to rotate around the support base, thus adjusting the tip angle. The angle adjustment mechanism can also be implemented using gear transmission or a linkage mechanism. This design allows the variable-range single-channel pipette 3 to meet the angle and volume requirements of some special experiments.

[0044] Based on any of the above embodiments, refer to Figure 1 The carrier switching platform 5 includes a rotary drive mechanism and a ring-shaped carrier positioning fixture, with positioning grooves on the surface of the positioning fixture.

[0045] Specifically, the carrier switching platform 5 is located below the multi-channel pipette assembly and the single-channel pipette assembly. Its rotary drive mechanism is connected to a ring-shaped carrier positioning fixture. The positioning fixture has positioning grooves on its surface for placing carriers. When it is necessary to switch carriers to different positions, the rotary drive mechanism drives the carrier positioning fixture to rotate, thus achieving the carrier switching. The rotary drive mechanism generally consists of a motor and a reducer. The motor drives the reducer's output shaft to rotate, thereby rotating the carrier switching platform 5. The carrier positioning fixture is usually made of aluminum alloy or plastic. The size and shape of the positioning grooves are designed according to different carriers to accurately position and fix the carriers. The carrier switching platform 5 can also switch carriers using linear movement. Through the rotary drive mechanism, the carrier switching platform 5 can quickly and accurately switch carriers from different positions to below the multi-channel pipette assembly, improving liquid handling efficiency and enhancing the system's flexibility when handling multiple carriers.

[0046] It should be noted that the carrier switching platform 5 is used for rotating and switching between well plates and culture dishes to achieve the purpose of switching carriers in different positions.

[0047] Based on any of the above embodiments, refer to Figure 1 The waste liquid collection component 4 includes two interfaces located at the bottom of the translation frame 9: one is a liquid filling interface, and the other is a liquid draining interface.

[0048] Specifically, the waste liquid collection component 4 has two interfaces located at the bottom of the translation frame 9, one as a liquid filling interface and the other as a liquid draining interface. The liquid filling interface is used to add liquids such as disinfectants into the waste liquid collection component 4, and the liquid draining interface is used to drain the collected waste liquid. The waste liquid collection component 4 is generally made of corrosion-resistant plastic or stainless steel and has an internal cavity for storing waste liquid. To ensure smooth liquid flow, valves and pipes are usually installed at the interfaces.

[0049] The aforementioned waste liquid collection component 4 enables the system to conveniently collect and promptly discharge the absorbed waste liquid during liquid processing, preventing waste liquid residue in the system. By adopting the above technical solution, this fully automatic multifunctional liquid processing system can efficiently collect and process waste liquid, ensuring the normal operation of the system, while also helping to maintain a clean experimental environment and preventing waste liquid from contaminating the experiment.

[0050] Based on any of the above embodiments, refer to Figure 1 The centrifuge tube support assembly includes a multi-specification centrifuge tube rack 7 mounted on the translation frame 9. The multi-specification centrifuge tube rack 7 includes multiple layers of detachable trays, each detachable tray corresponding to centrifuge tubes of different specifications. The surface of the detachable trays is provided with anti-slip protrusions.

[0051] Specifically, the multi-size centrifuge tube holder 7 in the centrifuge tube support assembly is mounted on the translation frame 9. It has multiple detachable trays, each corresponding to a different size of centrifuge tube, which can accommodate centrifuge tubes of various sizes and meet diverse experimental needs. In addition, the surface of the detachable trays is provided with anti-slip bumps to prevent the centrifuge tubes from sliding or shifting during placement. The detachable trays are generally made of plastic.

[0052] This multi-size centrifuge tube rack 7 not only facilitates the placement of centrifuge tubes of different sizes but also ensures the stability of the tubes. The multi-layer, detachable tray design allows for easy removal or replacement of trays as needed, increasing flexibility and practicality. In liquid handling operations, workers can easily place and retrieve the appropriate centrifuge tubes, thus smoothly completing operations such as liquid aspiration and transfer, contributing to improved efficiency and compatibility of the entire liquid handling system.

[0053] Based on any of the above embodiments, refer to Figure 1 The liquid suction head carrier assembly includes a rotating carrier plate 8 and a pickup mechanism. The surface of the rotating carrier plate 8 is provided with a snap-on positioning structure that matches the standard liquid suction head box.

[0054] Specifically, the aspirator head carrier assembly is mounted on the translation frame 9. The rotating tray 8 has a snap-on positioning structure that matches the standard aspirator head box, which can securely fix the standard aspirator head box. The pickup mechanism works in conjunction with the rotating tray 8. When the aspirator head of the single-channel pipette assembly needs to be replaced, the rotating tray 8 can be rotated to a suitable position, making it easy for the pickup mechanism to replace the aspirator head of the single-channel pipette assembly.

[0055] Optionally, the pickup mechanism typically consists of a robotic arm and grippers. The robotic arm can move up, down, left, and right, while the grippers can hold the aspiration head for replacement. The aspiration head carrier assembly enables the variable-range single-channel pipette 3 to quickly change aspiration heads, improving work efficiency.

[0056] Based on any of the above embodiments, refer to Figure 1 The shaking table 6 includes a base and an tiltable support platform, which is connected to the base by a hydraulic rod to tilt the support platform.

[0057] Specifically, the support platform and base of the shaker 6 are connected by a hydraulic rod. The base, located below the support platform, provides support for it. When the hydraulic rod extends or retracts, it tilts the support platform. This allows the liquid in the carrier placed on the support platform to collect under gravity. The base is typically made of metal, providing stable support. The hydraulic rod consists of an oil pump, oil pipes, and a hydraulic cylinder. The oil pump supplies pressurized oil, which is delivered to the hydraulic cylinder through the oil pipes, driving the piston and thus tilting the support platform. The shaker 6 can also oscillate left and right to accelerate mixing. This is achieved by a motor driving an eccentric wheel, which causes the support platform to oscillate from side to side.

[0058] The implementation principle of the fully automated multifunctional liquid processing system in this embodiment is as follows: The system uses a linear transmission mechanism on the translation frame 9 to drive the movement of various components. The multi-channel pipette group and the single-channel pipette group, driven by the lifting module, process different carriers on the carrier switching platform 5. The carrier switching platform 5 can quickly switch carriers. The centrifuge tube support component and the pipette tip support component provide corresponding consumable support for the pipettes. The waste liquid collection component 4 collects and processes waste liquid in a timely manner, and the shaker 6 assists in operations such as liquid mixing. This integrated and automated design replaces the traditional manual operation method, solving the problems of large workload, limited functionality, and low efficiency in manual liquid processing. It improves the efficiency and quality of biological experiments, while being compatible with multiple carriers to meet different experimental needs, bringing great convenience to experimental personnel.

[0059] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0060] The above provides a detailed description of the fully automatic multifunctional liquid handling system provided by this utility model. Specific examples have been used to illustrate the principles and implementation methods of this utility model. The descriptions of the embodiments above are only for the purpose of helping to understand the method and core ideas of this utility model. It should be noted that those skilled in the art can make several improvements and modifications to this utility model without departing from the principles of this utility model, and these improvements and modifications also fall within the protection scope of this utility model.

Claims

1. A fully automated multifunctional liquid handling system, characterized in that, It includes a translation frame (9) and a lifting module, a shaker (6), a waste liquid collection assembly, a centrifuge tube carrying assembly and a suction head carrying assembly disposed on the translation frame (9). The lifting module is provided with a multi-channel pipette group and a single-channel pipette group. The translation frame (9) is provided with a carrier switching platform (5) located below the multi-channel pipette group. The translation frame (9) is equipped with a linear transmission mechanism to drive the lifting module, the shaker (6), the waste liquid collection assembly, the centrifuge tube bearing assembly, the liquid suction head bearing assembly, and the carrier switching platform (5) to move respectively.

2. The fully automatic multifunctional liquid handling system according to claim 1, characterized in that, The multichannel pipette assembly includes a 96-channel pipette (1) and a 4-channel pipette (2) respectively disposed on the lifting module.

3. The fully automatic multifunctional liquid handling system according to claim 2, characterized in that, The 4-channel pipette (2) contains four independently controlled pipetting units, and the horizontal spacing of each pipetting unit is adjusted by a linear slide rail mechanism.

4. The fully automatic multifunctional liquid handling system according to claim 1, characterized in that, The single-channel pipette assembly includes multiple variable-range single-channel pipettes (3) respectively disposed on the lifting module.

5. The fully automatic multifunctional liquid handling system according to claim 4, characterized in that, The variable range single-channel pipette (3) is provided with an angle adjustment mechanism, which rotates the support base to deflect the pipette tip of the variable range single-channel pipette (3) relative to the horizontal plane.

6. A fully automated multifunctional liquid handling system according to any one of claims 1-5, characterized in that, The carrier switching platform (5) includes a rotary drive mechanism and a ring-shaped carrier positioning fixture, the surface of which is provided with a positioning groove.

7. The fully automatic multifunctional liquid handling system according to claim 6, characterized in that, The waste liquid collection component (4) includes two interfaces located at the bottom of the translation frame (9), one of which is a liquid filling interface and the other is a liquid draining interface.

8. The fully automatic multifunctional liquid handling system according to claim 6, characterized in that, The centrifuge tube support assembly includes a multi-specification centrifuge tube placement rack (7) disposed on the translation frame (9). The multi-specification centrifuge tube placement rack (7) includes multiple layers of detachable trays, each layer of the detachable trays corresponding to centrifuge tubes of different specifications. The surface of the detachable trays is provided with anti-slip protrusions.

9. A fully automatic multifunctional liquid handling system according to claim 6, characterized in that, The suction head carrier assembly includes a rotating carrier (8) and a pickup mechanism. The rotating carrier (8) has a snap-on positioning structure on its surface that matches the standard suction head box.

10. A fully automatic multifunctional liquid handling system according to claim 6, characterized in that, The shaking table (6) includes a base and an tiltable support platform, which is connected to the base by a hydraulic rod to tilt the support platform.

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