Lifting mechanism

Abstract

The lifting mechanism comprises a cavity, a cover plate, a clamping half-moon block and a lifting assembly, the lifting assembly comprises a shaft sleeve, a lifting shaft and a driving part, the shaft sleeve is fixed to the outer surface of the cavity through the clamping half-moon block, the lifting shaft is arranged in the shaft sleeve in a sleeved mode, the upper end of the lifting shaft is connected with the cover plate, and the driving part is arranged at the bottom of the shaft sleeve and is in transmission connection with the lifting shaft. The driving part is in transmission connection with the lifting shaft and can drive the lifting shaft to ascend and descend in the shaft sleeve, the upper end of the lifting shaft is connected with the cover plate, the shaft sleeve is fixed to the outer surface of the cavity through the clamping half-moon block, and the driving part can drive the lifting shaft to ascend and descend and meanwhile drive the cover plate to be opened or closed relative to the cavity. And the convenience of separating the cover plate from the cavity is improved.

Description

Technical Field

[0001] The utility model relates to the field of manufacturing equipment, in particular to a lifting mechanism. Background Art

[0002] In the field of semiconductor or photovoltaic pan-semiconductor manufacturing technology, due to the high cleanliness level requirements of the equipment workshop, most of them do not have lifting auxiliary tools such as cranes. When the equipment chamber needs to be opened for equipment maintenance, the operator usually opens the cover by flipping the cover upward. Usually, the cover is equipped with parts below, such as sputtering targets that need to be replaced frequently. In the traditional flip-opening structure, after the cover is flipped open, the parts originally set below the cover will be placed above the cover after flipping. At this time, the replacement of parts requires the use of lifting auxiliary tools, which is inconvenient to operate and difficult to maintain. Utility Model Content

[0003] Based on this, it is necessary to provide a lifting mechanism to facilitate the separation of the cover plate and the cavity, thereby improving the convenience of separating the cover plate and the cavity.

[0004] A lifting mechanism comprises a cavity, a cover plate, a clamping half-moon block and a lifting assembly, wherein the lifting assembly comprises a sleeve, a lifting shaft and a driving member, wherein the clamping half-moon block fixes the sleeve to the outer surface of the cavity, the lifting sleeve is arranged in the sleeve, the upper end of the lifting shaft is connected to the cover plate, and the driving member is arranged at the bottom of the sleeve and is connected to the lifting shaft to drive the lifting shaft to move up and down in the sleeve, thereby driving the cover plate to open or close relative to the cavity.

[0005] The lifting mechanism provided in the present application includes a cavity, a cover plate, a clamping half-moon block and a lifting assembly. The lifting assembly includes a sleeve, a lifting shaft and a driving member. The driving member is connected to the lifting shaft in a transmission manner. The driving member can drive the lifting shaft to perform lifting and lowering movements in the sleeve. The upper end of the lifting shaft is connected to the cover plate. At the same time, the clamping half-moon block fixes the sleeve to the outer surface of the cavity. The driving member can drive the lifting shaft to lift and lower while driving the cover plate to open or close relative to the cavity, thereby separating the cover plate and the cavity, thereby improving the convenience of separating the cover plate and the cavity.

[0006] In one embodiment, a concave assembly groove is formed on the side surface of the cavity, and the clamping half-moon block is fixed to the cavity. The clamping half-moon block has a half-moon-shaped structure, and the clamping half-moon block locks the sleeve in the concave assembly groove. The shape and size of the cross-section of the space enclosed between the clamping half-moon block and the concave assembly groove are adapted to the sleeve.

[0007] In one embodiment, the clamping half-moon block, the shaft sleeve and the cavity are fixed by fasteners.

[0008] In one embodiment, a keyway is formed on the inner side surface of the sleeve along the height direction, and a guide key is fixed on the outer side surface of the lifting shaft. The guide key is inserted into the keyway and can slide along the keyway.

[0009] In one embodiment, the driving member is fixedly connected to the bottom of the sleeve.

[0010] In one embodiment, a receiving hole is formed on the bottom surface of the lifting shaft, a nut is fixed in the receiving hole, the driving member includes a driving motor and a screw rod, the driving motor is transmission-connected to the screw rod, the screw rod extends into the receiving hole and is transmission-connected to the nut.

[0011] In one embodiment, the sleeve is a hollow cylindrical structure, and the top end of the lifting shaft extends out of the sleeve.

[0012] In one embodiment, a target material is connected to the bottom of the cover plate.

[0013] In one embodiment, the cover plate is rotatably connected to the lifting shaft.

[0014] In one embodiment, the outer surface of the lifting shaft is slidably connected to the inner surface of the sleeve. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention is further described below with reference to the accompanying drawings and embodiments, wherein:

[0016] Figure 1 A first schematic diagram of a lifting assembly provided in an embodiment of the present application;

[0017] Figure 2 A second schematic diagram of a lifting assembly provided in one embodiment of the present application;

[0018] Figure 3 A side view of a lifting assembly provided in one embodiment of the present application;

[0019] Figure 4 for Figure 3 sectional view of

[0020] Figure 5 for Figure 4 Enlarged view of the circled part.

[0021] Reference numerals: lifting mechanism 10; cavity 20; concave assembly groove 21; cover plate 30; clamping half-moon block 40; lifting assembly 50; bushing 51; keyway 510; lifting shaft 52; guide key 520; accommodating hole 521; nut 523; driving member 53; driving motor 531; screw rod 532; step structure 54; fastener 60; rotating assembly 70; upper plane bearing 71; lower plane bearing 72; pressure cover 80 DETAILED DESCRIPTION

[0022] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.

[0023] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0024] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0026] In the field of semiconductor or photovoltaic pan-semiconductor manufacturing technology, due to the high cleanliness level requirements of the equipment workshop, most of them do not have lifting auxiliary tools such as cranes. When it is necessary to open the cover of the equipment chamber for equipment maintenance, the operator usually opens the cover by flipping the cover plate 30 upward. Usually, the cover plate 30 is provided with parts below, such as sputtering targets that need to be replaced frequently. In the traditional flip-opening structure, after the cover is flipped open, the parts originally set below the cover plate 30 will be placed above the cover plate 30 after flipping. At this time, the replacement of parts requires the help of lifting auxiliary tools. If it is flipped upward. Then the large parts below the cover plate 30, such as the plane target of the plane target sputtering, the large quartz parts of the cavity 20, etc., will become the top of the cover plate 30 after flipping. When the weight of the parts exceeds the weight of manual handling, lifting tools are required. For semiconductor factories or pan-semiconductor factories without lifting cranes, maintenance will become difficult, inconvenient to operate, and difficult to maintain. Therefore, a lifting mechanism 10 that is convenient for separating the cover plate 30 and the cavity 20 is urgently needed.

[0027] refer to Figure 1 to Figure 5 In order to solve the above problems, the embodiment of the present application provides a lifting mechanism 10, including a cavity 20, a cover plate 30, a clamping half-moon block 40 and a lifting assembly 50, the lifting assembly 50 includes a sleeve 51, a lifting shaft 52 and a driving member 53, the clamping half-moon block 40 fixes the sleeve 51 to the outer surface of the cavity 20, the lifting shaft 52 sleeve 51 is arranged in the sleeve 51, the upper end of the lifting shaft 52 is connected to the cover plate 30, the driving member 53 is arranged at the bottom of the sleeve 51 and is transmission-connected to the lifting shaft 52, so as to drive the lifting shaft 52 to move up and down in the sleeve 51, thereby driving the cover plate 30 to open or close relative to the cavity 20.

[0028] In the lifting mechanism 10, the lifting mechanism 10 includes a cavity 20, a cover plate 30, a clamping half-moon block 40 and a lifting assembly 50. The cavity 20 has a containing function, and the required equipment can be placed in the cavity 20. The cover plate 30 protects the cavity 20. At the same time, the cover plate 30 can be opened or closed. By opening the cover plate 30, the interior of the cavity 20 can be maintained or repaired. The clamping half-moon block 40 is a fixture or tooling for clamping or fixing a workpiece. The middle area of ​​the clamping half-moon block 40 can clamp other structural components. In some embodiments, the clamping half-moon block 40 and other components can be clamped by a mechanism such as a screw or a handle. The clamping half-moon block 40 fixes the sleeve 51 to the outer surface of the cavity 20, which can fix the position of the sleeve 51 and increase the stability of the lifting mechanism 10. The clamping half-moon block 40 is firm, stable and reliable. The lifting assembly 50 includes a sleeve 51, a lifting shaft 52 and a driving member 53. The lifting shaft 52 sleeve 51 is arranged in the sleeve 51. The lifting shaft 52 is connected to the cover plate 30. The upper end of the lifting shaft 52 is connected to the cover plate 30. The movement of the lifting shaft 52 can drive the cover plate 30 to move. The driving member 53 is arranged at the bottom of the sleeve 51 and is transmission-connected to the lifting shaft 52. The driving member 53 has a driving function. The driving member 53 is transmission-connected to the lifting shaft 52. The driving member 53 can be used to drive the lifting shaft 52 to perform a lifting movement in the sleeve 51. Since the lifting shaft 52 is connected to the cover plate 30, the movement of the lifting shaft 52 driven by the driving member 53 can drive the cover plate 30 to open or close relative to the cavity 20. Specifically, when the driving member 53 drives the lifting shaft 52 to move downward, the cover plate 30 is in a closed state relative to the cavity 20. Correspondingly, when the driving member 53 drives the lifting shaft 52 to move upward, the cover plate 30 is in an open state relative to the cavity 20. Through the above structure, different from the flip-cover design in the prior art, the lifting mechanism 10 provided in the present application can open or close the cover plate 30 relative to the cavity 20 without flipping the cover plate 30. By opening the cover plate 30, the interior of the cavity 20 can be maintained or inspected, which facilitates the separation of the cover plate 30 and the cavity 20, thereby improving the convenience of separating the cover plate 30 and the cavity 20.

[0029] refer to Figure 1 to Figure 5The side surface of the cavity 20 forms a concave assembly groove 21, and the clamping half-moon block 40 is fixed to the cavity 20. The clamping half-moon block 40 is a half-moon-shaped structure. The half-moon-shaped structure can make the clamping half-moon block 40 better fit the concave assembly groove 21. The clamping half-moon block 40 locks the shaft sleeve 51 in the concave assembly groove 21. The clamping half-moon block 40 can play a role of limiting, so that the shaft sleeve 51 can be stably locked in the concave assembly groove 21. The shape and size of the cross-section of the space enclosed between the clamping half-moon block 40 and the concave assembly groove 21 are adapted to the shaft sleeve 51. In some embodiments, the semicircular structure of the clamping half-moon block 40 and the cavity 20 forms a circle with the same diameter as the shaft sleeve 51, which is conducive to making the clamping half-moon block 40, the shaft sleeve 51 and the concave assembly groove 21 stable and compact in structure, and is conducive to the stability of the overall structure of the lifting mechanism 10. In some embodiments, the clamping half-moon block 40, the sleeve 51 and the cavity 20 are fixed by a fastener 60, and the fastener 60 has a fixing function. In some embodiments, the fastener 60 can be a screw. Through the screw connection, the position of the clamping half-moon block 40 and the sleeve 51 can be fixed relative to the cavity 20. In some embodiments, the position of the clamping half-moon block 40 and the sleeve 51 relative to the cavity 20 can also be detachably connected, which is beneficial to the maintenance or repair of the lifting mechanism 10. In some embodiments, a keyway 510 is formed on the inner side of the sleeve 51 along the height direction, and a guide key 520 is fixed on the outer side of the lifting shaft 52. The guide key 520 is inserted into the keyway 510 and can slide along the keyway 510. In some embodiments, the guide key 520 is structurally compatible with the keyway 510. The insertion of the guide key 520 into the keyway 510 can enable the lifting shaft 52 to slide relative to the sleeve 51. At the same time, the insertion of the guide key 520 into the keyway 510 can ensure that the guide is determined when the lifting shaft 52 is lifted and slid, that is, the lifting shaft 52 can only move along the height direction of the sleeve 51, and the radial rotation direction of the lifting shaft 52 can be eliminated, so that the movement direction of the lifting shaft 52 has only a fixed up and down degree of freedom. This is conducive to ensuring the certainty of the trajectory of the lifting mechanism 10 when it is lifted and lowered, and is conducive to increasing the practicality of the lifting mechanism 10. In some embodiments, the driving member 53 is fixedly connected to the bottom of the sleeve 51, and the driving member 53 can provide drive for the lifting mechanism 10. In some embodiments, the driving member 53 includes a driving motor 531 and a screw rod 532. The driving motor 531 is transmission-connected to the screw rod 532. The screw rod 532 extends into the accommodating hole 521 and is transmission-connected to the nut 523. In some embodiments, the driving motor 531 can be a DC motor or an AC motor. Specifically, the DC motor uses a DC power supply and controls the motor speed and torque by adjusting the voltage and current. The AC motor converts the AC power supply into a current with adjustable frequency and amplitude through a frequency converter to control the motor speed and operating state.In some embodiments, a receiving hole 521 is formed on the bottom surface of the lifting shaft 52, and the receiving hole 521 can be used to install the screw rod 532. A nut 523 is fixed in the receiving hole 521, and the lifting shaft 52 can be connected to the screw rod 532 through the nut 523. In some embodiments, the sleeve 51 is a hollow cylindrical structure. In some embodiments, the size of the lifting shaft 52 can match the sleeve 51, and the top of the lifting shaft 52 extends out of the sleeve 51. In some embodiments, the outer surface of the lifting shaft 52 is slidably connected to the inner surface of the sleeve 51, and the lifting shaft 52 can slide up and down in the sleeve 51. In some embodiments, the cover plate 30 is rotatably connected to the lifting shaft 52, so that the cover plate 30 can move under the drive of the lifting shaft 52.

[0030] refer to Figure 1 to Figure 4In some embodiments, the lifting mechanism 10 further includes a rotating assembly 70. The cavity 20 has a accommodating function. The required equipment can be placed in the cavity 20. The cover 30 protects the cavity 20. At the same time, the cover 30 can be opened or closed. By opening the cover 30, the interior of the cavity 20 can be maintained or inspected. The rotating assembly 70 is connected to the cover 30 through the rotating assembly 70. The cover 30 can rotate relative to the lifting shaft 52 through the rotating assembly 70. The rotating assembly 70 has a rotatable feature. Specifically, when the rotating assembly 70 moves to the first position, the cover 30 is opened so that the cavity 20 is in an open state, which is convenient for inspection and maintenance of the cavity 20. When the rotating assembly 70 moves to the second position, the cover 30 is closed so that the cavity 20 is in a closed state. The lifting assembly 50 includes a sleeve 51, a lifting shaft 52 and a drive shaft. The lifting shaft 52 is connected to the cover plate 30 by the driving member 53, and the upper end of the lifting shaft 52 is connected to the cover plate 30. The movement of the lifting shaft 52 can drive the cover plate 30 to move. The driving member 53 is arranged at the bottom of the sleeve 51 and is connected to the lifting shaft 52 by transmission. The driving member 53 has a driving function. The driving member 53 is connected to the lifting shaft 52 by transmission. The driving member 53 can drive the lifting shaft 52 to move up and down in the sleeve 51 by the driving member 53. Since the lifting shaft 52 is connected to the cover plate 30, the movement of the lifting shaft 52 driven by the driving member 53 can drive the cover plate 30 to open or close relative to the cavity 20. Specifically, when the driving member 53 drives the lifting shaft 52 to move downward, the cover plate 30 is in a closed state relative to the cavity 20. Correspondingly, when the driving member 53 drives the lifting shaft 52 to move upward, the cover plate 30 is in an open state relative to the cavity 20. In the lifting mechanism 10, the rotating assembly 70 and the lifting assembly 50 can cooperate with each other, and the lifting assembly 50 can be lifted and lowered under the drive of the driving member 53. When the cover plate 30 moves upward under the drive of the rotating shaft, the cover plate 30 is opened relative to the cavity 20. At this time, the opening state of the cover plate 30 can be adjusted by adjusting the rotating assembly 70, that is, the driving member 53 is arranged at the bottom of the sleeve 51 and is connected to the lifting shaft 52 in a transmission manner, so as to drive the lifting shaft 52 to move up and down in the sleeve 51, thereby driving the cover plate 30 to open or close relative to the cavity 20. The cover plate 30 is connected to the top end of the lifting shaft 52 through a bearing, so that when the lifting shaft 52 moves up and down in the sleeve 51, it can drive the cover plate 30 to move up and down.

[0031] In some embodiments, the rotating assembly 70 includes an upper plane bearing 71 and a lower plane bearing 72, both of which are sleeved on the top of the lifting shaft 52 and are respectively connected to the upper surface and the lower surface of the cover plate 30. In some embodiments, the top of the lifting shaft 52 is provided with a step structure 54, and the bottom end of the lower plane bearing 72 is overlapped on the step structure 54. The top of the lower plane bearing 72 is connected to the lower surface of the cover plate 30, and the top and bottom ends of the lower plane bearing 72 are rotatably connected. The top of the upper plane bearing 71 is connected to the lifting shaft 52, and the bottom end of the upper plane bearing 71 is connected to the cover plate 30. The top and bottom ends of the upper plane bearing 71 are rotatably connected. The upper plane bearing 71 and the lower plane bearing 72 can ensure that the cover plate 30 rotates relative to the lifting shaft 52, and at the same time, the upper plane bearing 71 and the lower plane bearing 72 can ensure that the cover plate 30 is in a horizontal state when rotating. When the lifting shaft 52 is lifted to the height required by the user, the opening and closing angle of the cover plate 30 can be adjusted manually. In some embodiments, the cover plate 30 is set to rotate clockwise in the plane where the cover plate 30 is located to be closed, and the cover plate 30 is set to rotate counterclockwise in the plane where the cover plate 30 is located to be open. Specifically, when the lifting shaft 52 is raised to the required height in the sleeve 51, the cover plate 30 is rotated counterclockwise by manual operation, and the cover plate 30 is rotated horizontally relative to the lifting shaft 52, and the cover plate 30 is gradually opened. At this time, the operator can perform maintenance or work in the cavity 20 as required. When the cavity 20 needs to be closed, it is only necessary to rotate the cover plate 30 clockwise, and the cover plate 30 is gradually closed. After that, by controlling the height of the lifting shaft 52 in the sleeve 51, the lifting shaft 52 drives the cover plate 30 to gradually descend until the cover plate 30 fits the cavity 20, thereby achieving complete closure of the cavity 20. The lifting mechanism 10 also includes a pressure cover 80, which can limit the cover plate 30, so that the pressure cover 80 can press the cover plate 30 to ensure the normal rotation of the cover plate 30. In some embodiments, the pressure cover 80 is fixed to the top end face of the lifting shaft 52 by a fastener 60, and presses the top end of the upper plane bearing 71. The fastener 60 can further fix the position of the pressure cover 80. When the fastener 60 is tightened, the positions of the pressure cover 80 and the cover plate 30 are relatively fixed, and the upper plane bearing 71, the cover plate 30 and the lower plane bearing 72 are relatively in a tightened state; when the fastener 60 is loosened, the positions of the pressure cover 80 and the cover plate 30 are relatively loose, and the cover plate 30 can rotate between the upper plane bearing 71 and the lower plane bearing 72.

[0032] refer to Figure 1 to Figure 5When the lifting mechanism 10 is used, since the lifting assembly 50 includes a sleeve 51, a lifting shaft 52 and a driving member 53, the lifting shaft 52 sleeve 51 is arranged in the sleeve 51, the lifting shaft 52 is connected to the cover plate 30, and the upper end of the lifting shaft 52 is connected to the cover plate 30. The movement of the lifting shaft 52 can drive the cover plate 30 to move. The driving member 53 is arranged at the bottom of the sleeve 51 and is connected to the lifting shaft 52 by transmission. The driving member 53 has a driving function. The driving member 53 is connected to the lifting shaft 52 by transmission, and the lifting shaft 52 can be driven by the driving member 53 to drive the lifting shaft 52 to move up and down in the sleeve 51. Since the lifting shaft 52 is connected to the cover plate 30, the movement of the lifting shaft 52 driven by the driving member 53 can drive the cover plate 30 to open or close relative to the cavity 20. For example, when the driving member 53 drives the lifting shaft 52 to move downward, the cover plate 30 is in a closed state relative to the cavity 20. Correspondingly, when the driving member 53 drives the lifting shaft 52 to move upward, the cover plate 30 is in an open state relative to the cavity 20. In the lifting mechanism 10, the rotating assembly 70 and the lifting assembly 50 can cooperate with each other, and the lifting assembly 50 can be driven by the driving member 53 to perform lifting movement. When the cover plate 30 moves upward under the driving of the rotating shaft, the cover plate 30 is opened relative to the cavity 20. At this time, the opening state of the cover plate 30 can be adjusted by adjusting the rotating assembly 70, that is, the driving member 53 is arranged at the bottom of the sleeve 51 and is connected to the lifting shaft 52 in a transmission manner to drive the lifting shaft 52 to move up and down in the sleeve 51, thereby driving the cover plate 30 to open or close relative to the cavity 20. The lifting mechanism 10 also includes a rotating assembly 70, through which the cover plate 30 is connected, and the cover plate 30 can rotate relative to the lifting shaft 52 through the rotating assembly 70. The rotating assembly 70 has the feature of being able to rotate. Specifically, when the rotating assembly 70 moves to the first position, the cover plate 30 is opened so that the cavity 20 is in an open state, which is convenient for inspection and maintenance in the cavity 20. When the rotating assembly 70 moves to the second position, the cover plate 30 is closed so that the cavity 20 is in a closed state. When the lifting shaft 52 is raised to the required height in the sleeve 51, the cover plate 30 is rotated counterclockwise by manual operation, and the cover plate 30 is rotated horizontally relative to the lifting shaft 52, and the cover plate 30 is gradually opened. At this time, the operator can perform maintenance or work in the cavity 20 as needed. When the cavity 20 needs to be closed, it is only necessary to rotate the cover plate 30 clockwise, and the cover plate 30 is gradually closed. After that, by controlling the height of the lifting shaft 52 in the sleeve 51, the lifting shaft 52 drives the cover plate 30 to gradually descend until the cover plate 30 fits with the cavity 20, thereby achieving complete closure of the cavity 20. In this process, there is no need to flip the cover plate 30. Usually, other equipment is provided on the cover plate 30, and the bottom of the cover plate 30 is connected to a target material, which avoids the need to flip the cover plate 30 in the prior art to achieve the opening and closing of the cover plate 30, and improves the convenience of separating the cover plate 30 from the cavity 20.

[0033] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0034] The above embodiments only express several implementation methods of the utility model, and the descriptions are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A lifting mechanism, characterized in that: It includes a cavity, a cover plate, a clamping half-moon block and a lifting component, the lifting component includes a sleeve, a lifting shaft and a driving member, the clamping half-moon block fixes the sleeve to the outer surface of the cavity, the lifting sleeve is arranged in the sleeve, the upper end of the lifting shaft is connected to the cover plate, the driving member is arranged at the bottom of the sleeve and is connected to the lifting shaft to drive the lifting shaft to move up and down in the sleeve, thereby driving the cover plate to open or close relative to the cavity.

2. The lifting mechanism according to claim 1, characterized in that: An inner concave assembly groove is formed on the side surface of the cavity, and the clamping half-moon block is fixed to the cavity. The clamping half-moon block has a half-moon-shaped structure, and the clamping half-moon block locks the sleeve in the inner concave assembly groove. The shape and size of the cross-section of the space enclosed between the clamping half-moon block and the inner concave assembly groove are adapted to the sleeve.

3. The lifting mechanism according to claim 2, characterized in that: The clamping half-moon block, the shaft sleeve and the cavity are fixed by fasteners.

4. The lifting mechanism according to claim 1, characterized in that: The inner side surface of the shaft sleeve forms a keyway along the height direction, and the outer side surface of the lifting shaft is fixed with a guide key, which is inserted into the keyway and can slide along the keyway.

5. The lifting mechanism according to claim 1, characterized in that: The driving member is fixedly connected to the bottom of the shaft sleeve.

6. The lifting mechanism according to claim 5, characterized in that: A receiving hole is formed on the bottom surface of the lifting shaft, a nut is fixed in the receiving hole, the driving member includes a driving motor and a screw rod, the driving motor is transmission-connected to the screw rod, the screw rod extends into the receiving hole and is transmission-connected to the nut.

7. The lifting mechanism according to claim 1, characterized in that: The shaft sleeve is in a hollow cylindrical structure, and the top end of the lifting shaft extends out of the shaft sleeve.

8. The lifting mechanism according to claim 1, characterized in that: The bottom of the cover plate is connected with a target material.

9. The lifting mechanism according to claim 1, characterized in that: The cover plate is rotatably connected to the lifting shaft.

10. The lifting mechanism according to claim 1, characterized in that: The outer surface of the lifting shaft is slidably connected to the inner surface of the shaft sleeve.

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