A material lifting device and method for a clean room

Abstract

The application discloses a material lifting device and method for a clean workshop, which comprises an outer frame, a lifting inner cage and a power lifting device, vertical upper and lower running tracks are installed at four corners in the outer frame, fixed pulleys matched with the upper and lower running tracks are installed at four corners of the lifting inner cage, the lifting inner cage is connected with the power lifting device for driving the lifting inner cage to move up and down, the lifting inner cage is provided with a material inlet and outlet, and a power assembly of the power lifting device is arranged outside the outer frame. The power assembly of the power mechanism is arranged outside the outer shell, so that the oil stains and the like of the power assembly do not affect the material, the frame structure is convenient to clean and disinfect, and maintenance is convenient.

Description

TECHNICAL FIELD

[0001] The present application relates to a material lifting device and method for a clean workshop, and belongs to the technical field of material lifting equipment. BACKGROUND

[0002] Nowadays, many industries, such as food industry, pharmaceutical industry, electronic industry, aerospace industry, precision machinery industry, film production enterprises, etc. need to build clean workshops, which are also called purification workshops. The clean workshop has special requirements for the equipment and facilities installed in the clean workshop. It should be easy to clean, disinfect and sterilize, and the production operation and maintenance should be simple and convenient. In addition, it should be corrosion-resistant, and the transmission parts of the equipment should be sealed well to avoid the leakage of coolant or lubricating oil and the pollution of the equipment. The existing lifting device hydraulic station structure on the market often has the problem of oil leakage. Steel wire rope or chain as the lifting traction structure has a dead angle of health, which is not easy to clean and disinfect, and is not suitable for clean workshops. SUMMARY

[0003] The technical problem to be solved by the present application is to provide a material lifting device and method for a clean workshop to solve the problems in the prior art.

[0004] The technical scheme adopted by the present application is: a material lifting device for a clean workshop, comprising an outer frame, a lifting inner cage and a power lifting device, the outer frame is vertically installed with up and down rails at four corners, the lifting inner cage is installed with V-groove nylon positioning pulleys matched with the up and down rails at four corners, the lifting inner cage is connected with the power lifting device for driving the up and down movement of the lifting inner cage, the lifting inner cage is provided with a material inlet and outlet, and the power assembly of the power lifting device is placed outside the outer frame.

[0005] Further, the material lifting device for a clean workshop further comprises a transfer platform, the transfer platform is located at one half of the height of the outer frame, and the height of the lifting inner cage is one half of the height of the outer frame.

[0006] Further, the material lifting device for clean workshop further comprises a transfer trolley placed inside the lifting inner cage, the transfer trolley can move at the import and export of the lifting inner cage, the bottom of the transfer trolley is provided with walking wheels with brake mechanisms, six walking wheels are adopted, one wheel is arranged at the front end midpoint and the rear end midpoint of the six walking wheels, two pairs of wheels are arranged at the two sides of the middle part, the front three and the rear three are symmetrically arranged, the front three are arranged in a triangular shape, the rear three are also arranged in a triangular shape, two groups of four walking wheels at the two sides of the middle part are controlled by a driving circuit module (containing a DC motor and a battery), and the forward movement, the backward movement and the parking can be realized, the perpendicular foot distance between the central points of the connecting shafts of the frontmost end of the two front walking wheels and the pair of middle walking wheels close to the frontmost end is slightly greater than the gap distance between the lifting inner cage and the outer frame, and the perpendicular foot distance is also greater than the gap distance between the outer frame and the transfer platform, handles are arranged at the front end and the rear end of the transfer trolley, and a top plate is arranged at the top of the lifting inner cage.

[0007] Further, the outer frame comprises a bottom square frame and a top square frame made of stainless steel and four supporting columns fixedly connected at the four corners of the bottom square frame and the top square frame, transparent protective plates are arranged on the two sides of the outer frame, and hand-clamping-preventing protective strips are arranged on the two sides of the four supporting columns.

[0008] Further, the lifting inner cage comprises a top frame and a bottom frame made of stainless steel, the top frame and the bottom frame are fixedly connected through four vertical columns, and a supporting plate is fixedly connected to the bottom frame.

[0009] Further, the power lifting device comprises an electric push rod made of aluminum alloy and a cantilever rod, the cantilever rod is fixedly connected to the top of the left side or the right side of the lifting inner cage in a cantilevered manner, the top of the push rod of the electric push rod is fixedly connected to the cantilever rod, the transmission housing of the electric push rod is fixedly connected to the bottom surface of the mounting plate arranged at the bottom of the outer frame, walking wheels are arranged at the bottom of the outer frame, and the motor connected to the transmission of the electric push rod is located outside the protective plate.

[0010] Further, two sets of the power lifting device are arranged at the two sides of the lifting inner cage.

[0011] Further, a stroke touch switch is arranged on the supporting column in the outer frame, the lifting inner cage is lifted and lowered to a specified position to touch the stroke touch switch, and the stroke touch switch is used for layer control.

[0012] Further, the stroke touch switch is connected to a controller, the controller is connected to the motor of the electric push rod and a remote controller.

[0013] An operating method of a material lifting device for a clean workshop, the method is: for the operation of the equipment feed inlet at the transfer platform or below the transfer platform: put the bagged material on the lifting inner cage bottom plate, control the lifting inner cage to rise uniformly to the transfer platform, take the material from the lifting inner cage bottom plate to the transfer platform of the same height, and then pour the material into the equipment feed hopper; for the operation of the equipment feed inlet above the transfer platform: put the bagged material on the transfer trolley, control the transfer trolley to enter the lifting inner cage bottom plate with the material, control the lifting inner cage to rise uniformly to the transfer platform, control the transfer trolley to enter the lifting inner cage with the material, control the lifting inner cage to rise again to make the lifting inner cage top plate flush with or higher than the equipment feed inlet, and then take the material from the transfer trolley and pour it into the equipment feed hopper; handles are arranged at the front and rear ends of the transfer trolley, and in the case that the transfer trolley battery is out of power or fails to automatically walk first, the trolley can be manually pushed or pulled into or out of the lifting inner cage to complete the walking operation.

[0014] The beneficial effects of the present application are as follows compared with the prior art:

[0015] 1) The power assembly of the power mechanism is arranged outside the shell and in a sealed state, so that the oil stains of the power assembly do not affect the material, the frame structure is convenient for cleaning and disinfecting, and maintenance is convenient;

[0016] 2) The lifting device can complete material lifting by using the bottom of the lifting inner cage, and can complete secondary lifting by using the top of the lifting inner cage combined with the transfer platform, so that the utilization rate of the equipment is greatly improved, and when the height of the room is limited and the feed inlet of the equipment is close to the ceiling, the lifting inner cage top and the transfer platform are used to facilitate the secondary lifting of the material to a higher feed inlet;

[0017] 3) The lifting device has a simple overall structure, is remotely controlled, the wires are easily arranged inside, there is no dead angle for cleaning, the metal frame structure is made of 304 stainless steel and is corrosion-resistant and rust-free, and is suitable for use in a clean workshop;

[0018] 4) The reciprocating electric push rod shell providing lifting power is made of aluminum alloy, the screw rod transmission is arranged inside, the telescopic rod can only be telescopic and cannot rotate, the structure between the push rod and the shell is designed to be compact, dust and dirt cannot be accumulated, the electric push rod can be directly driven by a permanent magnet 24V DC motor, and safety and low noise are achieved;

[0019] 5) There are V-groove nylon positioning pulleys at 8 corners of the lifting inner cage, the lifting inner cage runs stably up and down without shaking;

[0020] 6)The transfer trolley in the application has a total of 6 walking wheels, one walking wheel at the midpoint of the front end and one walking wheel at the midpoint of the rear end, 2 pairs of directional wheels on each side of the middle part, the arrangement structure of the walking wheels can ensure that the transfer trolley has at least four walking wheels to bear the load when crossing the gap between the inner cage and the frame or the gap between the transfer platform, thereby avoiding unstable load bearing and smoothly crossing the gap between the inner cage and the outer frame and the gap between the outer frame and the transfer platform. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is a perspective structural schematic diagram of the application;

[0022] Figure 2 is an exploded perspective structural schematic diagram (with a transfer trolley) of the application;

[0023] Figure 3 is another perspective structural schematic diagram of the application;

[0024] Figure 4 is a perspective structural schematic diagram of the transfer trolley;

[0025] Figure 5 is a bottom view structural schematic diagram of the transfer trolley. DETAILED DESCRIPTION

[0026] The application will be further described below in combination with the drawings and specific embodiments.

[0027] Embodiment 1: as Figures 1-5As shown, a material lifting device for a clean workshop, comprising an outer frame 1, a lifting inner cage 2 and a power lifting device 3, the outer frame 1 is vertically installed with up and down running tracks 6 at four corners, the cross section of the up and down running tracks 6 is inverted V-shaped, the lifting inner cage 2 is installed with positioning pulleys 7 cooperating with the up and down running tracks 6 at four corners, the wheel column surface of the positioning pulley 7 is provided with a ring groove with a V-shaped groove surface, the positioning pulley adopts a nylon wheel, which can realize stable walking while reducing noise, the lifting inner cage 2 is connected with the power lifting device 3 driving it to move up and down, the lifting inner cage 2 is provided with a material inlet and outlet, and the power assembly of the power lifting device 3 is arranged outside the outer frame; further comprising a transfer platform 4 and a transfer trolley 5 placed inside the lifting inner cage 2, the transfer platform 4 is located at one half of the height of the outer frame 1, the height of the lifting inner cage 2 is one half of the height of the outer frame 1, which facilitates the secondary transfer of the material bag, the transfer trolley 5 can walk in the inlet and outlet of the lifting inner cage 2, the frame of the transfer trolley 5 is made of 304 stainless steel, the bottom of the transfer trolley 5 is installed with walking wheels 501 with brake mechanisms, there are six walking wheels 501, one wheel at the front end midpoint and the rear end midpoint of the six walking wheels, two wheels on each side of the middle part, the front three and the rear three are symmetrically arranged, the front three are arranged in a triangular shape, and the rear three are also arranged in a triangular shape, wherein the two groups of four electric walking wheels at the middle two sides are controlled by a driving circuit module (including a DC motor and a battery (a rechargeable battery)), which can realize forward movement, backward movement and parking, the vertical foot distance between the shaft center point of the no-power walking wheel at the front end midpoint and the rear end midpoint and the walking wheel close to it is slightly larger than the gap distance between the lifting inner cage 2 and the outer frame 1, and the vertical foot distance is also greater than the gap distance between the outer frame 1 and the transfer platform 4, handles are arranged at the front and rear ends of the transfer trolley 5, and a top plate is arranged at the top of the lifting inner cage, the transfer trolley with the above structure can always ensure that at least four wheels bear the weight, cross the gap stably and easily, the DC motor drives, the labor intensity of the operator is reduced, the transfer is stable, reliable, low noise, and the transfer trolley can walk remotely through a remote controller.

[0028] The outer frame 1 comprises a bottom square frame 101, a top square frame 102 and four support columns 103 fixedly connected at four corners of the bottom square frame 101 and the top square frame 102, the mechanism is stable and reliable, the up and down running tracks 6 are vertically installed at the inner corners of the four support columns 103, transparent protective plates 104 are installed on both sides of the outer frame 1, the protective plates 104 are made of organic glass, the transparent protective plates play a role in isolating and protecting the outer frame, on the one hand, and on the other hand, they facilitate the observation of the lifting height of the material bag at multiple angles, protective strips 105 are installed on one side of the up and down running tracks 2 at both sides of the material inlet and outlet, the protective strips (304 stainless steel) can block the hands from reaching the positioning pulley, thereby improving the safety of the equipment operation, extension frames 106 are arranged at the bottom of the bottom square frame 101 to the two sides, which facilitates the sensing of the electric push rod and placing the motor outside.

[0029] The inner lifting cage 2 comprises a top frame 201 and a bottom frame 202 made of 304 stainless steel, and the top frame 201 and the bottom frame 202 are fixedly connected through four vertical columns 203. The bottom frame 202 is fixedly connected with a support plate 204 made of 304 stainless steel. The structure is stable and reliable in support. Positioning pulleys are installed at eight corner points of the inner lifting cage 2, and the inner lifting cage 2 runs stably and reliably. The top plate (made of 304 stainless steel) provided on the top frame 201 facilitates secondary transfer and lifting.

[0030] The power lifting device 3 comprises an electric push rod 301 made of aluminum alloy and a cantilever rod 302. The cantilever rod 302 is fixedly connected to the left side or the right side of the top of the inner lifting cage 2. The push rod of the electric push rod 301 is fixedly connected to the cantilever rod 302 through a fastening bolt (made of 304 stainless steel). The transmission housing of the electric push rod 301 is fixedly connected to the bottom surface of the mounting plate (made of 304 stainless steel) provided at the bottom of the outer frame 1. The bottom of the outer frame 1 is provided with a walking wheel. The motor 303 connected to the transmission of the electric push rod 301 is located outside the protective plate 104. The structure completely places the power part of the electric push rod outside the entire outer frame, and is convenient to install. In order to lift stably and reliably, two sets of power lifting devices 3 are installed on both sides of the inner lifting cage 2.

[0031] The stroke touch switch 8 is installed on the support column in the outer frame 1. The inner lifting cage 2 is lifted and lowered to the specified position to touch the stroke touch switch 8. Through the stroke switch, the detection of the inner lifting cage in place can be realized. The stroke touch switch 8 is connected to the controller. The controller is connected with the motor of the electric push rod 301 and the remote controller. The stroke touch switch 8 automatically transmits the parking signal to the controller. The controller automatically stops the motor, which is convenient for automatically parking the inner lifting cage. The remote controller can realize automatic lifting and lowering control.

[0032] Example 2: An operation method for a material lifting device in a cleanroom, comprising the following steps: For operation where the equipment inlet is at or below the transfer platform: Place the bagged material on the bottom plate of the inner lifting cage, control the inner lifting cage to rise at a constant speed to the transfer platform, remove the material from the bottom plate of the inner lifting cage to the transfer platform at the same height, and then pour the material into the equipment feed hopper; For operation where the equipment inlet is above the transfer platform: Place the bagged material on the transfer trolley, control the transfer trolley carrying the material to move forward into the bottom plate of the inner lifting cage, control the inner lifting cage to rise at a constant speed to the same height as the transfer platform, the transfer trolley carrying the material moves forward from the inner lifting cage to the transfer platform and stops, control the inner lifting cage to descend until the top is level with the transfer platform, then control the transfer trolley carrying the material to retreat to the top of the inner lifting cage and stop, control the inner lifting cage to continue rising until the top plate of the inner lifting cage is level with or above the equipment inlet, and then remove the material from the transfer trolley and pour it into the equipment feed hopper. The transfer trolley is equipped with handles at both the front and rear ends. If the transfer trolley is unable to move automatically due to a lack of battery power or malfunction, the trolley can be manually pushed into or pulled out of the lifting cage using the handles to complete the movement operation.

[0033] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of protection of the claims.

Claims

1. A material lifting device for cleanrooms, characterized in that: The system includes an outer frame (1), an inner lifting cage (2), and a power lifting device (3). The outer frame (1) has vertically installed up and down rails (6) at its four corners. The cross-section of the up and down rails (6) is an inverted V-shape. The inner lifting cage (2) has positioning pulleys (7) at its four corners that cooperate with the up and down rails (6). The positioning pulleys (7) have annular grooves with V-grooves on their wheel surfaces. The positioning pulleys are made of nylon. The inner lifting cage (2) is connected to a power lifting device (3) that drives its up and down movement. The inner lifting cage (2) is equipped with a material storage container. The power components of the power lifting device (3) are located outside the outer frame. The power lifting device (3) includes an electric push rod (301) and a cantilever rod (302) made of aluminum alloy. The cantilever rod (302) is suspended and fixedly connected to the top of the left or right side of the inner cage (2). The top of the push rod of the electric push rod (301) is fixedly connected to the cantilever rod (302). The gearbox housing of the electric push rod (301) is fixedly connected to the bottom surface of the mounting plate set at the bottom of the outer frame (1). The bottom of the outer frame (1) is equipped with traveling wheels. The motor connected to the gearbox of (301) is located outside the protective plate (104); the operation method of the material lifting device for cleanroom is as follows: for operation where the equipment inlet is at or below the transfer platform: put the bagged material into the bottom plate of the inner lifting cage, control the inner lifting cage to rise at a uniform speed to the transfer platform, take the material out from the bottom plate of the inner lifting cage to the transfer platform of the same height, and then pour the material into the equipment feed hopper; for operation where the equipment inlet is above the transfer platform: put the bagged material into the transfer trolley. The transfer trolley (5) carries the material forward and enters the bottom plate of the inner lifting cage. After it is in place, the inner lifting cage is controlled to rise at a constant speed to the same height as the transfer platform. The transfer trolley (5) carries the material forward from the inner lifting cage to the transfer platform and stops. The inner lifting cage is controlled to descend to the top and be level with the transfer platform. Then the transfer trolley (5) carries the material backward and stops at the top of the inner lifting cage. The inner lifting cage is controlled to continue rising so that the top plate of the inner lifting cage is level with or higher than the feed inlet of the equipment. Then the material is taken out from the transfer trolley and poured into the feed hopper of the equipment.

2. The material lifting device for a cleanroom according to claim 1, characterized in that: It also includes a transfer platform (4), which is located at half the height of the outer frame (1) and raises the inner cage (2) to half the height of the outer frame (1).

3. A material lifting device for a cleanroom according to claim 2, characterized in that: It also includes a transfer trolley (5) placed inside the inner cage (2). The transfer trolley (5) can move at the entrance and exit of the inner cage (2). The bottom of the transfer trolley (5) is equipped with a traveling wheel (501) with brakes. There are six traveling wheels (501). There is one wheel at the midpoint of the front end and one wheel at the midpoint of the rear end. There is one pair of wheels on each side of the middle. The front three and the back three are arranged symmetrically. The front three are arranged in a triangle. The four traveling wheels (501) in the middle are electric traveling wheels. The vertical distance between the traveling wheels (501) at the front and rear ends of the transfer trolley (5) and the center point of the connecting shaft of the pair of middle traveling wheels closest to it is greater than the gap distance between the inner cage (2) and the outer frame (1). At the same time, the vertical distance is also greater than the gap distance between the outer frame (1) and the transfer platform (4). The top plate is set on the top of the inner cage (2).

4. A material lifting device for a cleanroom according to claim 1, characterized in that: The outer frame (1) includes a bottom square frame (101) and a top square frame (102) made of 304 stainless steel, and four support columns (103) fixedly connected to the four corners of the bottom square frame (101) and the top square frame (102). Transparent protective plates (104) are installed on both sides of the outer frame (1), and anti-pinch protective strips (105) are installed on both sides of the material inlet and outlet of the four support columns (103).

5. A material lifting device for a cleanroom according to claim 1, characterized in that: The inner cage (2) includes a top frame (201) and a bottom frame (202) made of 304 stainless steel. The top frame (201) and the bottom frame (202) are fixedly connected by four columns (203). A support plate (204) is fixedly connected to the bottom frame (202).

6. A material lifting device for a cleanroom according to claim 1, characterized in that: Two sets of power lifting devices (3) are installed on both sides of the inner cage (2).

7. A material lifting device for a cleanroom according to claim 1, characterized in that: The outer frame (1) has a travel touch switch (8) installed on the inner support column. The inner cage (2) is raised and lowered to the designated position to touch the travel touch switch (8). The travel touch switch (8) is used for leveling control.

8. A material lifting device for a cleanroom according to claim 7, characterized in that: The limit switch (8) is connected to the controller, which is connected to the motor of the electric actuator (301) and the remote control.

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