An operator's cabin lift platform and engineering machine

Abstract

The application provides an operating room lifting platform and engineering machinery, and belongs to the technical field of engineering machinery. The operating room lifting platform comprises a telescopic mechanism, a driving device and a platform body. The top end of the telescopic mechanism is suitable for being fixed at the operating room. The platform body is connected with the bottom end of the telescopic mechanism. The driving device is connected with the telescopic mechanism and is used for driving the telescopic mechanism to telescopically extend or retract. The telescopic mechanism comprises a plurality of cylinder bodies which are sequentially sleeved. The platform body can automatically carry a person to the operating room, thereby saving time and effort.

Description

Technical Field

[0001] This invention relates to the field of engineering machinery technology, and more specifically, to an operator's cab lifting platform and engineering machinery. Background Technology

[0002] Crane operator cabs are typically cantilevered, especially for ultra-large tonnage cranes, where the cab height is generally over 2.5 meters, allowing for multi-directional rotation for easy control and observation. Operators usually access existing crane operator cabs by climbing ladders. After the cab is positioned, operators repeatedly use ladders to move between the cab and the crane, consuming a significant amount of time and energy. Summary of the Invention

[0003] The present invention aims to improve the efficiency of operators entering and leaving the control room.

[0004] To address the aforementioned problems, the present invention provides an operating room lifting platform, comprising a telescopic mechanism, a drive device, and a platform body. The top end of the telescopic mechanism is adapted to be fixed in the operating room, the platform body is connected to the bottom end of the telescopic mechanism, and the drive device is connected to the telescopic mechanism and is used to drive the linear telescopic mechanism to extend and retract. The telescopic mechanism comprises multiple cylinders, which are sequentially nested together.

[0005] The operating room lifting platform provided by this invention has, but is not limited to, the following beneficial effects:

[0006] By fixing the top of the telescopic mechanism to the operating room, when the operator needs to enter the suspended operating room, the telescopic mechanism can be extended by controlling the drive device until the platform descends to the ground. Then, the operator stands on the platform, and the telescopic mechanism can be retracted by controlling the drive device until the platform rises to one end of the walkway outside the operating room. The operator can then step onto the walkway from the platform and enter the operating room. Compared to the traditional method of climbing ladders to enter and exit the operating room, this invention can automatically transport personnel up and down the platform, saving time and effort. In addition, the telescopic mechanism is composed of multiple cylinders nested together, making it a linear telescopic mechanism with high integration and small space occupation. The space occupied by the telescopic mechanism in the circumferential direction is only the space occupied by the outermost cylinder.

[0007] Furthermore, the top end of the outermost cylinder is adapted to be fixed at the operating room, and the platform is connected to the bottom end of the innermost cylinder, wherein the top end of the outermost cylinder is the top end of the telescopic mechanism, and the bottom end of the innermost cylinder is the bottom end of the telescopic mechanism.

[0008] Furthermore, in two adjacent cylinders, the bottom end of the inner wall of the outer cylinder is provided with a slider that contacts the outer wall of the inner cylinder, and / or the top end of the outer wall of the inner cylinder is provided with a slider that contacts the inner wall of the outer cylinder.

[0009] Furthermore, the driving device includes at least one driving mechanism, two adjacent cylinders are connected to a common driving mechanism, one of the two adjacent cylinders is connected to the fixed end of the driving mechanism, and the other of the two adjacent cylinders is connected to the movable end of the driving mechanism. The driving mechanism is used to drive the two adjacent cylinders to move relative to each other.

[0010] Furthermore, the plurality of cylinders includes three cylinders, which are arranged from the outside to the inside as a first cylinder, a second cylinder, and a third cylinder. The driving mechanism is a telescopic cylinder, with the two telescopic cylinders being a first telescopic cylinder and a second telescopic cylinder, respectively. The piston rod of the first telescopic cylinder is positioned upwards and the first telescopic cylinder is located in the innermost cylinder. The top end of the piston rod of the first telescopic cylinder is connected to the top end of the first cylinder, and the top end of the cylinder body of the first telescopic cylinder is connected to the top end of the second cylinder. The piston rod of the second telescopic cylinder is positioned downwards and the second telescopic cylinder is located outside the outermost cylinder. The bottom end of the piston rod of the second telescopic cylinder is connected to the bottom end of the third cylinder, and the bottom end of the cylinder body of the second telescopic cylinder is connected to the bottom end of the second cylinder.

[0011] Furthermore, the driving device includes a driving mechanism and a flexible element. The driving mechanism is a telescopic cylinder. The piston rod of the telescopic cylinder is arranged upward and located in the innermost cylinder. The top end of the piston rod of the telescopic cylinder is connected to the top end of the outermost cylinder. The top end of the cylinder adjacent to the outermost cylinder is connected to the top end of the cylinder body of the telescopic cylinder.

[0012] In a direction from the outside to the inside, the multiple cylinders are connected end to end in sequence by the flexible element;

[0013] One end of the flexible element is fixedly connected to the outermost cylinder, and the other end of the flexible element is fixedly connected to the innermost cylinder. Furthermore, the cylinder located between the outermost and innermost cylinders is flexibly connected to the flexible element.

[0014] Furthermore, multiple flexible elements are provided, with two of the multiple flexible elements being a first flexible element and a second flexible element, and the first flexible element and the second flexible element being symmetrically arranged on both sides of the innermost cylinder.

[0015] One end of the first flexible element is fixedly connected to one of the top and bottom ends of the outermost cylinder, and one end of the second flexible element is fixedly connected to the other end of the top and bottom ends of the outermost cylinder.

[0016] Furthermore, it also includes a guide wheel assembly, the guide wheel assembly including a calibration guide wheel;

[0017] The cylinder between the outermost and innermost cylinders is designated as the intermediate cylinder. At least two calibration guide wheels are provided on the intermediate cylinder, and the two calibration guide wheels are arranged diagonally relative to the intermediate cylinder. The calibration guide wheels on all the intermediate cylinders and located on one side of the innermost cylinder cooperate with the first flexible element, while the calibration guide wheels on all the intermediate cylinders and located on the other side of the innermost cylinder cooperate with the second flexible element.

[0018] Furthermore, the operating room lifting platform also includes a locking mechanism, which is disposed on the telescopic mechanism and is adapted to fix the plurality of cylinders in the telescopic mechanism in the retracted state.

[0019] In addition, the present invention also provides an engineering machine, which includes the aforementioned operator's cab lifting platform.

[0020] Since the technical improvements and effects achieved by the engineering machinery are the same as those of the operating room lifting platform, the technical effects of the engineering machinery will not be described in detail. Attached Figure Description

[0021] Figure 1 This is a schematic structural diagram of the operating room lifting platform according to an embodiment of the present invention;

[0022] Figure 2 This is a schematic structural diagram of a linear telescopic mechanism cooperating with a driving mechanism according to an embodiment of the present invention;

[0023] Figure 3 This is a schematic diagram illustrating the cooperation between the linear telescopic mechanism and another driving mechanism according to an embodiment of the present invention.

[0024] Explanation of reference numerals in the attached figures:

[0025] 1-Telescopic mechanism, 2-Platform, 21-Guardrail, 3-Cylinder, 31-First cylinder, 32-Second cylinder, 33-Third cylinder, 34-Fourth cylinder, 4-Extension horizontal plate, 5-Slider, 6-Telescopic cylinder, 61-First telescopic cylinder, 62-Second telescopic cylinder, 7-Calibration guide wheel, 8-First flexible element, 9-Second flexible element. Detailed Implementation

[0026] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0027] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", 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.

[0028] Furthermore, in the attached diagram, the Z-axis represents the vertical direction, that is, the up and down position, and the positive direction of the Z-axis (that is, the direction the arrow of the Z-axis points) represents up, and the negative direction of the Z-axis (that is, the direction opposite to the positive direction of the Z-axis) represents down.

[0029] It should also be noted that the aforementioned Z-axis representation is only for the purpose of facilitating the description of the present invention and simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0030] See Figure 1 An operator's cab lifting platform according to an embodiment of the present invention includes a telescopic mechanism 1, a driving device and a platform 2. The top end of the telescopic mechanism 1 is adapted to be fixed at the operator's cab. The platform 2 is connected to the bottom end of the telescopic mechanism 1. The driving device is connected to the telescopic mechanism 1 and is used to drive the telescopic mechanism 1 to extend and retract. The telescopic mechanism includes multiple cylinders, which are sequentially nested together.

[0031] In this embodiment, by fixing the top of the telescopic mechanism 1 to the operating room, when the operator needs to enter the suspended operating room, the telescopic mechanism 1 can be extended by the drive device until the platform 2 descends to the ground. Then, the operator stands on the platform 2, and the telescopic mechanism 1 can be retracted by the drive device until the platform 2 rises to one end of the walkway outside the operating room. The operator can then step onto the walkway from the platform 2 and enter the operating room. Compared to the traditional method of climbing a ladder to enter and exit the operating room, this embodiment can automatically carry people up and down the platform 2, saving time and effort. In addition, the telescopic mechanism is composed of multiple cylinders 3 connected in sequence, so the telescopic mechanism 1 is a linear telescopic mechanism with high integration and small space occupation. The space occupied by the telescopic mechanism 1 in the circumferential direction is only the space occupied by the outermost cylinder 3.

[0032] See Figure 2Optionally, the top end of the outermost cylindrical body 3 is adapted to be fixed to one side of the operating chamber, and the platform 2 is connected to the bottom end of the innermost cylindrical body 3, wherein the top end of the outermost cylindrical body 3 is the top end of the telescopic mechanism 1, and the bottom end of the innermost cylindrical body 3 is the bottom end of the telescopic mechanism 1. Alternatively, the top end of the innermost cylindrical body 3 can be fixed to the operating chamber, and the bottom end of the outermost cylindrical body 3 can be connected to the platform 2.

[0033] Here, the top of the outermost cylinder 3 is fixed to the operating room, and the bottom of the innermost cylinder 3 is connected to the platform 2. This means that the side wall of the outermost cylinder 3 can be fixedly connected to the side wall of the operating room. The connection between the outermost cylinder 3 and the side wall of the operating room will not affect the movement of the inner cylinder 3.

[0034] Therefore, in this embodiment, it is preferred that the top end of the outermost cylinder 3 is adapted to be fixed to one side of the operating chamber, and the platform 2 is connected to the bottom end of the innermost cylinder 3, and the following description is based on this connection method.

[0035] See Figure 2 Optionally, in two adjacent cylinders 3, the bottom end of the inner wall of the outer cylinder 3 is provided with a slider 5 that contacts the outer wall of the inner cylinder 3, and / or, the top end of the outer wall of the inner cylinder 3 is also provided with a slider 5 that contacts the inner wall of the outer cylinder 3.

[0036] Here, by setting slider 5, friction is reduced and noise is reduced when adjacent cylinders 3 move relative to each other.

[0037] See Figure 2 Optionally, the driving device includes at least one driving mechanism, and two adjacent cylinders 3 are connected to a common driving mechanism. One of the two adjacent cylinders 3 is connected to the fixed end of the driving mechanism, and the other of the two adjacent cylinders 3 is connected to the movable end of the driving mechanism. The driving mechanism is used to drive the two adjacent cylinders 3 to move relative to each other.

[0038] The explanation for the shared drive mechanism connecting two adjacent cylinders is as follows: For example, if the telescopic mechanism has four cylinders, which are named as the first cylinder, the second cylinder, the third cylinder, and the fourth cylinder from the outside to the inside, then the first cylinder and the second cylinder are connected to a shared drive mechanism, the second cylinder and the third cylinder are connected to a shared drive mechanism, and the third cylinder and the fourth cylinder are connected to a shared drive mechanism.

[0039] The driving mechanism is a telescopic cylinder, which can be a hydraulic cylinder, a pneumatic cylinder, or an electric cylinder, etc.

[0040] It can be understood that the number of cylinders and the number of telescopic cylinders determine the total extension length of the telescopic mechanism 1. Thus, the extension stroke of the telescopic mechanism 1 can be increased by increasing the number of cylinders 3 and the drive mechanism. For example, if a fifth cylinder is added, then a telescopic cylinder is also connected to both the fourth and fifth cylinders.

[0041] See Figure 2 Optionally, the bottom end of the cylinder 3 extends outward with an extension plate 4, so that the three cylinders 3 from the outside to the inside are sequentially the first cylinder 31, the second cylinder 32, and the third cylinder 33. The two telescopic cylinders 6 are the first telescopic cylinder 61 and the second telescopic cylinder 62, respectively. The piston rod of the first telescopic cylinder 61 is arranged upward and the first telescopic cylinder 61 is located in the innermost cylinder 3. The top end of the piston rod of the first telescopic cylinder 61 is connected to the top end of the first cylinder 31. The top end of the cylinder body of the first telescopic cylinder 61 is connected to the top end of the second cylinder 32. The piston rod of the second telescopic cylinder 62 is arranged downward and the second telescopic cylinder 62 is located outside the outermost cylinder 3. The bottom end of the piston rod of the second telescopic cylinder 62 is connected to the extension plate 4 on the third cylinder 33. The bottom end of the cylinder body of the second telescopic cylinder 62 is connected to the extension plate 4 on the second cylinder 32. If the telescopic mechanism 1 has three cylinders 3, namely the first cylinder 31, the second cylinder 32, and the third cylinder 33 from the outside to the inside, then the innermost cylinder 3 refers to the third cylinder 33. If the telescopic mechanism 1 has four cylinders 3, that is, in addition to the first cylinder 31, the second cylinder 32, and the third cylinder 33, it also includes a fourth cylinder 34, then the innermost cylinder 3 refers to the fourth cylinder 34. The outermost cylinder 3 refers to the first cylinder 31.

[0042] Here, the piston rod of the first telescopic cylinder 61 is positioned upwards, and the top of the piston rod is connected to the top of the first cylinder 31. The top of the cylinder body of the first telescopic cylinder 61 is connected to the top of the second cylinder 32. Thus, the first telescopic cylinder 61 does not occupy the space above the first cylinder 31, thereby reducing its vertical space occupation. The first telescopic cylinder 61 is located in the innermost cylinder 3, which is equivalent to the first telescopic cylinder 61 being coaxially arranged with all cylinders 3, further reducing the space occupied by the first telescopic cylinder 61 on the surrounding area (compared to the first telescopic cylinder 6...). 1. Located between the first cylinder 31 and the second cylinder 32); The second telescopic cylinder 62 is set on the outermost cylinder 3 to ensure that the multiple cylinders 3 occupy little space in the circumferential space and have a high degree of integration; The piston rod of the second telescopic cylinder 62 is set downward, and the bottom end of the piston rod of the second telescopic cylinder 62 is connected to the extension plate 4 at the bottom end of the third cylinder 33. The bottom end of the cylinder body of the second telescopic cylinder 62 is connected to the extension plate 4 at the bottom end of the second cylinder 32. In this way, the cylinder body of the second telescopic cylinder is on top and the cylinder body of the first telescopic cylinder 61 is on the bottom, reducing the occupation of the drive mechanism in the vertical space.

[0043] Among them, the extension plate 4 not only serves to connect with the corresponding telescopic cylinder 6, but also, when the linear telescopic mechanism 1 is fully retracted, the extension plates 4 at the bottom of multiple cylinders 3 fit together, thus improving the internal sealing of the cylinder 3. The size of the extension plates at the bottom of each cylinder 3 can be adjusted according to actual needs.

[0044] It is understandable that when the telescopic mechanism 1 has a total of four cylinders 3, that is, in addition to the first cylinder 31, the second cylinder 32 and the third cylinder 33, it also includes a fourth cylinder 34, then the drive mechanism should also include a third telescopic cylinder. The third telescopic rod is located outside the first cylinder 31, the piston rod of the third telescopic cylinder is set downward, the bottom end of the piston rod of the third telescopic cylinder is connected to the bottom end of the fourth cylinder, and the bottom end of the cylinder of the third telescopic rod is connected to the bottom end of the third cylinder 33.

[0045] See Figure 3 Optionally, the driving device includes a driving mechanism and a flexible element. The driving mechanism is a telescopic cylinder 6. The piston rod of the telescopic cylinder 6 is arranged upward and located in the innermost cylinder 3. The top end of the piston rod of the telescopic cylinder 6 is connected to the top end of the outermost cylinder 3. The top end of the cylinder body of the telescopic cylinder 6 is connected to the top end of the cylinder 3 adjacent to the outermost cylinder 3.

[0046] In the direction from the outside to the inside of the multiple cylinders 3, the multiple cylinders 3 are connected end to end in sequence through the flexible element;

[0047] One end of the flexible element is fixedly connected to the outermost cylinder 3, and the other end of the flexible element is fixedly connected to the innermost cylinder 3. Furthermore, the cylinder 3 located between the outermost and innermost cylinders is flexibly connected to the flexible element. The flexible connection between the flexible element and the cylinder means that the contact point between the cylinder and the flexible element can move relative to the flexible element. For example, a chain on a sprocket can move relative to the sprocket; a clothes hanger on a clothesline can move relative to the clothesline; or, when a fixed pulley lifts a heavy object, one end of a rope is held by a person, and the other end is passed over a fixed pulley at a high position and fixed to the heavy object. When the person applies downward force to lift the heavy object, the rope will move relative to the fixed pulley. This connection between the rope and the fixed pulley is a flexible connection. In this embodiment, for example, the telescopic mechanism has four cylinders, which are the first cylinder, the second cylinder, the third cylinder and the fourth cylinder from the outside to the inside. The connection relationship between the flexible element and each cylinder can be as follows: one end of the flexible element is fixed to the bottom end of the first cylinder, and the other end of the flexible element passes through the top end of the second cylinder and the bottom end of the third cylinder in sequence and is fixed to the top end of the fourth cylinder. In this way, the top end of the second cylinder and the bottom end of the third cylinder are flexibly connected through the flexible element.

[0048] Here, a telescopic cylinder 6, in conjunction with a flexible element connecting the ends of multiple cylinders 3, enables the synchronous telescopic mechanism 1 to extend and retract simultaneously. Synchronous extension and retraction means that, except for the outermost cylinder 3, each cylinder 3 simultaneously descends or rises the same distance relative to its adjacent outermost cylinder 3. This is because, after the ends of the multiple cylinders 3 are sequentially connected by the flexible element, when the telescopic cylinder 6 drives the cylinder 3 adjacent to the outermost cylinder 3 to rise and fall relative to it, the other cylinders 3, except for the outermost fixed cylinder 3, will also rise and fall relative to their adjacent cylinders 3 under the transmission of the flexible element. It should be noted that the "head" of a cylinder 3 refers to its bottom end, and the "tail" of a cylinder 3 refers to its top end.

[0049] In this design, the piston rod of the telescopic cylinder 6 is positioned upwards, and the top end of the piston rod is connected to the top end of the outermost cylinder 3. The top end of the cylinder body of the telescopic cylinder 6 is connected to the top end of the cylinder 3 adjacent to the outermost cylinder 3. In this way, the telescopic cylinder will not occupy the space above the outermost cylinder, thereby reducing the space occupied by the telescopic cylinder in the vertical space. The telescopic cylinder 6 is located in the innermost cylinder 3, which is equivalent to the telescopic cylinder being coaxially arranged with all the cylinders 3, thereby reducing the space occupied by the telescopic cylinder 6 in the surrounding space.

[0050] See Figure 3Optionally, multiple flexible elements are provided, and two of the multiple flexible elements are respectively a first flexible element 8 and a second flexible element 9. The first flexible element 8 and the second flexible element 9 are symmetrically arranged on both sides of the innermost cylinder 3. For example, the first flexible element 8 is arranged on the left side of the innermost cylinder 3, and the second flexible element 9 is arranged on the right side of the innermost cylinder 3.

[0051] One end of the first flexible element 8 is fixedly connected to one of the top and bottom ends of the outermost cylinder 3, and one end of the second flexible element 9 is fixedly connected to the other end of the top and bottom ends of the outermost cylinder 3. Since the multiple cylinders 3 are connected end to end in sequence through the flexible elements in the direction from the outside to the inside, the other end of the first flexible element 8 is fixedly connected to one of the top and bottom ends of the innermost cylinder 3, and the other end of the second flexible element 9 is fixedly connected to the other end of the top and bottom ends of the innermost cylinder 3.

[0052] Here, a first flexible element 8 and a second flexible element 9 are respectively disposed on both sides of the innermost cylinder 3. One end of the first flexible element 8 is fixedly connected to one end of the top or bottom of the outermost cylinder 3, and one end of the second flexible element 9 is fixedly connected to the other end of the top or bottom of the outermost cylinder 3. This is because when the number of cylinders 3 is even, if there is only one flexible element, such as only the first flexible element 8, the innermost cylinder 3 will fall under its own weight. Therefore, a second flexible element 9 is also provided. Unlike the first flexible element 8, which is fixedly connected to the bottom of the outermost cylinder 3, the second flexible element 9 is fixed to the top of the outermost cylinder 3. In this way, it is ensured that even if there is an even number of cylinders 3, the innermost cylinder 3 will not fall under its own weight, thus removing the limitation on the number of cylinders 3.

[0053] See Figure 3 Optionally, the operating room lifting platform further includes a guide wheel assembly, which includes a plurality of calibration guide wheels 7;

[0054] The cylinder 3 between the outermost and innermost cylinder 3 is designated as the intermediate cylinder. At least two calibration guide wheels 7 are provided on this intermediate cylinder, arranged diagonally relative to the cylinder 3. For example, the two calibration guide wheels 7 can be located on opposite sides of the intermediate cylinder, or more specifically, one of the two calibration guide wheels 7 can be located at the top left side of the intermediate cylinder, and the other at the bottom right side, thus presenting a diagonal arrangement. Specifically, the calibration guide wheel 7 on the left side of the innermost cylinder 3 on all the intermediate cylinders engages with the first flexible element 8, and the calibration guide wheel 7 on the right side of the innermost cylinder 3 on all the cylinders 3 engages with the second flexible element 9.

[0055] Here, the aforementioned flexible connection between the flexible element and the cylinder 3 refers to the flexible connection between the flexible element and the cylinder 3 achieved by installing guide wheels on the cylinder 3 and then cooperating with the guide wheels. The cooperation between the flexible element and the guide wheels can reduce the wear of the flexible element (compared to the flexible element directly contacting the cylinder 3).

[0056] Here, taking the example of having four cylinders 3, from the outside to the inside, they are the first cylinder 31, the second cylinder 32, the third cylinder 33 and the fourth cylinder 34. A calibration guide wheel 7 is provided at the top of one side (e.g., the left side) of the second cylinder 32, and a calibration guide wheel 7 is provided at the bottom of the other side (right side) of the second cylinder 32. A calibration guide wheel 7 is provided at the bottom left side of the third cylinder 33, and a calibration guide wheel 7 is provided at the top right side of the third cylinder 33. One end of the first flexible element 8 is fixedly connected to the bottom of the first cylinder 31, and the other end of the first flexible element 8 passes through the calibration guide wheel 7 at the top left side of the second cylinder 32 and the calibration guide wheel 7 at the bottom left side of the third cylinder 33 in sequence before being fixedly connected to the top of the fourth cylinder 34. One end of the second flexible element 9 is fixedly connected to the top of the first cylinder 31, and the other end of the second flexible element 9 passes through the calibration guide wheel 7 at the bottom right side of the second cylinder 32 and the calibration guide wheel 7 at the top right side of the third cylinder 33 in sequence before being fixedly connected to the bottom of the fourth cylinder 34.

[0057] Here, multiple cylinders are connected end to end by flexible elements, and the linear telescopic mechanism can be fully extended and fully retracted with only one telescopic cylinder, occupying only the space inside the outermost cylinder.

[0058] It is understandable that the guide wheel assembly may include other guide wheels in addition to the calibration guide wheel 7. Ultimately, through the cooperation of other guide wheels and the calibration guide wheel 7, the orientation of the flexible element meets the design requirements.

[0059] See Figure 3 , after removing Figure 3 In the case of the guide wheel, the first flexible element connects multiple cylinders end-to-end sequentially. This means that one end of the first flexible element is fixed to the bottom of the first cylinder, and the other end of the first flexible element passes through the top of the second cylinder and the bottom of the third cylinder before being fixedly connected to the top of the fourth cylinder. Similarly, the second flexible element connects multiple cylinders end-to-end sequentially. This means that one end of the second flexible element is fixed to the top of the first cylinder, and the other end of the second flexible element passes through the bottom of the second cylinder and the top of the third cylinder before being fixedly connected to the bottom of the fourth cylinder.

[0060] It is understandable that the flexible element can be a rope, and in this case, the guide wheel is a fixed pulley that can cooperate with the rope. Of course, the flexible element can also be a chain, in which case the guide wheel is a sprocket that can cooperate with the chain.

[0061] Optionally, when the number of cylinders 3 is greater than three, the flexible element can be a complete integral structure or a segmented structure containing multiple segmented flexible elements. When the flexible element is a segmented structure, taking a structure with four cylinders 3 as an example, the first flexible element 8 includes two segmented flexible elements, denoted as the first segment a and the first segment b. One end of the first segment a is fixed to the bottom end of the first cylinder 31, and the other end of the first segment a passes over the calibration guide wheel 7 at the top of the second cylinder 32 and is fixed to the bottom end of the third cylinder 33. One end of the first segment b is fixed to the top of the second cylinder 32, and the other end of the first segment b passes over the calibration guide wheel 7 at the bottom of the third cylinder 33 and is fixed to the top of the fourth cylinder 34. That is, the three adjacent first cylinders 31, second cylinders 32, and third cylinders 33 are connected end to end through the first segment a, and the three adjacent second cylinders 32, third cylinders 33, and fourth cylinders 34 are connected end to end through the first segment b. Thus, the four cylinders are completed by the two segmented flexible elements. The first and last parts of cylinder 3 are connected end-to-end; similarly, the second flexible element 9 consists of two segmented flexible elements, denoted as the second a-segment flexible element and the second b-segment flexible element. One end of the second a-segment flexible element is fixed to the top of the first cylinder 31, and the other end passes around the calibration guide wheel 7 at the bottom of the second cylinder 32 and is fixed to the top of the third cylinder 33. One end of the second b-segment flexible element is fixed to the bottom of the second cylinder 32, and the other end passes around the calibration guide wheel 7 at the top of the third cylinder 33 and is fixed to the bottom of the fourth cylinder 34. Thus, the three adjacent first cylinders 31, second cylinders 32, and third cylinders 33 are connected end-to-end through the second a-segment flexible element, and the three adjacent second cylinders 32, third cylinders 33, and fourth cylinders 34 are connected end-to-end through the second b-segment flexible element. This, in turn, completes the end-to-end connection of the four cylinders 3 through the two segmented flexible elements. In this way, the segmented structure of the flexible element reduces the difficulty of installation.

[0062] Optionally, the operating room lifting platform further includes a locking mechanism, which is disposed on the linear telescopic mechanism 1 and is adapted to fix the plurality of cylinders 3 in the telescopic mechanism 1 in the retracted state together.

[0063] The locking structure can be a spring-loaded ball structure, which is used to fix multiple cylinders 3 in the telescopic mechanism 1 in the fully retracted state together, preventing the cylinders 3 from accidentally falling and causing danger in the event of a failure or malfunction of the telescopic cylinder. The method of locking adjacent cylinders 3 using the spring-loaded ball structure can employ existing technology, which will not be elaborated upon here.

[0064] The locking mechanism may also include a locking pin, which is horizontally positioned at the bottom end of the innermost cylinder 3 and slidably connected to the innermost cylinder 3. When the linear telescopic mechanism 1 is in the fully retracted state, the locking pin can be horizontally slid and inserted into the pin hole on the side of the cab.

[0065] See Figure 1 Optionally, the edge of the platform 2 is provided with a protective railing 21.

[0066] Here, a guardrail 21 is installed on the edge of the platform 2 to increase the safety of people standing on the platform 2.

[0067] In addition, the present invention also provides an engineering machine, which includes the aforementioned operator's cab lifting platform.

[0068] Since the technical improvements and effects achieved by the engineering machinery are the same as those of the operating room lifting platform, the technical effects of the engineering machinery will not be described in detail.

[0069] The terms “first,” “second,” “third,” and “fourth” are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as “first,” “second,” “third,” and “fourth” may explicitly or implicitly include at least one of those features.

[0070] While the present invention has been disclosed above, its scope of protection is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and all such changes and modifications will fall within the scope of protection of the present invention.

Claims

1. An operator's cab lifting platform, characterized in that, The device includes a telescopic mechanism (1), a drive device, and a platform (2). The top of the telescopic mechanism (1) is adapted to be fixed at the operating room. The platform (2) is connected to the bottom of the telescopic mechanism (1). The drive device is connected to the telescopic mechanism (1) and is used to drive the telescopic mechanism (1) to extend and retract, so that the platform (2) switches between a first position and a second position. The telescopic mechanism (1) includes multiple cylinders (3), which are sequentially nested. The first position is the ground position, and the second position is the position of the horizontal end of the walkway of the operating room. The top end of the outermost cylinder (3) is adapted to be fixed at the operating room, and the platform (2) is connected to the bottom end of the innermost cylinder (3). The top end of the outermost cylinder (3) is the top end of the telescopic mechanism (1), and the bottom end of the innermost cylinder (3) is the bottom end of the telescopic mechanism (1). The driving device includes a driving mechanism and a flexible element. The driving mechanism is a telescopic cylinder (6). The piston rod of the telescopic cylinder (6) is arranged upward and located inside the innermost cylinder (3). The top end of the piston rod of the telescopic cylinder (6) is connected to the top end of the outermost cylinder (3). The top end of the cylinder (3) adjacent to the outermost cylinder (3) is connected to the top end of the cylinder body of the telescopic cylinder (6). The telescopic cylinder (6) is coaxially arranged with all the cylinders (3). In the direction from the outside to the inside of the multiple cylinders (3), the multiple cylinders (3) are connected end to end in sequence through the flexible element. One end of the flexible element is fixedly connected to the outermost cylinder (3), and the other end of the flexible element is connected to the cylinder body of the outermost cylinder (3). The innermost cylinder (3) is fixedly connected, and the cylinder (3) located between the outermost cylinder (3) and the innermost cylinder (3) is flexibly connected to the flexible element; multiple flexible elements are provided, and two of the multiple flexible elements are respectively a first flexible element (8) and a second flexible element (9), and the first flexible element (8) and the second flexible element (9) are symmetrically arranged on both sides of the innermost cylinder (3); one end of the first flexible element (8) is fixedly connected to one end of the top and bottom of the outermost cylinder (3), and one end of the second flexible element (9) is fixedly connected to the other end of the top and bottom of the outermost cylinder (3).

2. The operating room lifting platform according to claim 1, characterized in that, In two adjacent cylinders (3), the bottom end of the inner wall of the outer cylinder (3) is provided with a slider (5) that contacts the outer wall of the inner cylinder (3), and / or, the top end of the outer wall of the inner cylinder (3) is provided with a slider (5) that contacts the inner wall of the outer cylinder (3).

3. The operating room lifting platform according to claim 1, characterized in that, It also includes a guide wheel assembly, which includes a calibration guide wheel (7); Let the cylinder (3) between the outermost cylinder (3) and the innermost cylinder (3) be the intermediate cylinder. At least two calibration guide wheels (7) are provided on the intermediate cylinder. The two calibration guide wheels (7) are arranged diagonally relative to the intermediate cylinder. The calibration guide wheel (7) on all the intermediate cylinders and located on one side of the innermost cylinder (3) cooperates with the first flexible element (8), and the calibration guide wheel (7) on all the intermediate cylinders and located on the other side of the innermost cylinder (3) cooperates with the second flexible element (9).

4. The operating room lifting platform according to claim 1, characterized in that, It also includes a locking mechanism disposed on the telescopic mechanism (1), the locking mechanism being adapted to fix the plurality of cylinders (3) in the telescopic mechanism (1) in the retracted state.

5. An engineering machinery, characterized in that, Includes the operator's cab lift as described in any one of claims 1 to 4.

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