A raw material squeezing device for beer brewing

Abstract

The utility model discloses a raw material squeezing device for beer brewing belongs to squeezing device technical field. Including support frame and squeezing frame, the top of support frame is installed with squeezing frame, the bottom of squeezing frame is installed with the hopper, the outside of support frame of hopper one side is provided with track, the top of track is installed with electric trolley of sliding, the top of electric trolley is installed with turnover seat, the outside of turnover seat is provided with turnover frame, the inside of turnover frame is installed with storage tank, and storage tank extends to the outside of turnover frame. The utility model not only has realized that the squeezing device carries out the convenient squeezing to beer raw material, has made things convenient for the convenient discharge to the solid raw material of squeezing completion, and has made things convenient for the convenient movement and dumping of squeezing device to the solid raw material of squeezing completion, has reduced the labor intensity of manual dumping solid raw material of squeezing completion, has improved the effect and efficiency of beer raw material squeezing.

Description

Technical Field

[0001] This utility model relates to the field of pressing equipment technology, specifically a raw material pressing device for beer brewing. Background Technology

[0002] Beer is an alcoholic beverage made primarily from wheat malt and barley malt, with the addition of hops, through liquid gelatinization and saccharification, followed by liquid fermentation. Beer has a low alcohol content and contains carbon dioxide, various amino acids, vitamins, low-molecular-weight sugars, inorganic salts, and various enzymes. The brewing process involves several steps, including pressing the fermented ingredients to separate the beer from the lees.

[0003] For example, the beer brewing pressing device disclosed in the authorization announcement number CN220429356U relates to the field of beer brewing technology. The beer brewing pressing device includes a box, a pressing mechanism and a turning mechanism. The box has a placement box inside, and an installation box is fixedly installed on the left side of the box. The pressing mechanism is set on the box.

[0004] Although it achieves the combined use of a motor, threaded rod, first chute, first slider, first connecting rod, second chute, second slider, connecting block, second connecting rod, pressure plate, placement box, and filter screen, enabling the device to press beer raw materials, the pressed liquid flows out through the filter screen, while the residue remains in the placement box for easy cleaning by the operator. The turning mechanism is set on the box body, which enables the device to turn the beer raw materials inside the placement box through the rotation of the eccentric wheel, thereby making the beer raw materials more evenly pressed and preventing residual liquid inside the beer raw materials to a certain extent.

[0005] However, this does not solve the problem that existing pressing devices of this type are generally not conducive to the convenient pressing of beer raw materials, the convenient discharge of the pressed solid raw materials, and the convenient movement and dumping of the pressed solid raw materials by the pressing device. This affects the labor intensity of manually dumping the pressed solid raw materials and affects the effect and efficiency of pressing beer raw materials. Utility Model Content

[0006] The purpose of this utility model is to provide a raw material pressing device for beer brewing, so as to solve the problems mentioned in the background art, which are not convenient for pressing beer raw materials, not convenient for discharging the pressed solid raw materials, and not convenient for moving and dumping the pressed solid raw materials, thus affecting the labor intensity of manually dumping the pressed solid raw materials and affecting the effect and efficiency of pressing beer raw materials.

[0007] To solve the above-mentioned technical problems, this utility model provides the following technical solution: A raw material pressing device for beer brewing includes a support frame and a pressing frame. The pressing frame is installed at the top of the support frame, and a hopper is installed at the bottom of the pressing frame. A track is provided on the outside of the support frame on one side of the hopper. An electric trolley is slidably installed at the top of the track. A tilting seat is installed at the top of the electric trolley. A tilting frame is provided on the outside of the tilting seat. A storage box is installed inside the tilting frame and extends to the outside of the tilting frame. A discharge port is provided at the bottom of the pressing frame above the storage box. A feed hopper is installed at the top of the pressing frame. A conical screen is installed inside the pressing frame. Multiple sets of filter holes with equal spacing are provided on the outer wall of the conical screen. A power motor is installed at the top of the support frame on one side of the feed hopper. A spiral roller body is installed at the output end of the power motor and extends into the inside of the conical screen. The spiral roller body is movably connected to the pressing frame. A discharge port is provided inside the pressing frame on one side of the spiral roller body.

[0008] Optionally, a power cylinder is symmetrically installed inside the pressing frame on one side of the discharge port, and a support shaft is installed at the end of the spiral roller body away from the power motor, and the support shaft extends to the outside of the pressing frame, and the support shaft is movably connected to the pressing frame.

[0009] Optionally, a movable seat is movably fitted onto the surface of the support shaft, and the movable seat is connected to the support frame. A partition is slidably fitted onto the surface of the support shaft on one side of the discharge port, and the output end of the power cylinder is connected to the partition. A discharge pipe is installed at the bottom of the hopper.

[0010] Optionally, a rotating shaft is installed on the outer wall of the flipping frame, and a left shaft seat is movably fitted onto the surface of the rotating shaft, and the left shaft seat is connected to the flipping frame.

[0011] Optionally, a flipping shaft is installed on the outer wall of the flipping frame away from the rotating shaft, and a right shaft seat is movably fitted onto the surface of the flipping shaft, and the right shaft seat is connected to the flipping seat.

[0012] Optionally, a rotary motor is installed on the outer wall of the flipping seat on one side of the flipping shaft, and a worm gear is installed at the output end of the rotary motor.

[0013] Optionally, a limiting block is installed on the outer wall of the flip seat on one side of the worm gear, and the limiting block is movably connected to the worm gear.

[0014] Optionally, a worm wheel is fitted onto the surface of the flip shaft on one side of the worm, and the worm wheel meshes with the worm.

[0015] Optionally, electric push rods are symmetrically installed at the bottom of the electric trolley. Each electric push rod has a drive block installed at its output end. Each drive block has a drive rod installed on its outer wall, and each drive rod has a brake block installed on its outer wall.

[0016] Optionally, a control panel is installed on the outer wall of the support frame on one side of the hopper, and the output end of the control panel is electrically connected to the input end of the power motor, power cylinder, electric trolley, rotary motor, and electric push rod.

[0017] Compared with the prior art, the beneficial effects of this utility model are: the pressing device not only realizes the convenient pressing of beer raw materials and facilitates the convenient discharge of the pressed solid raw materials, but also facilitates the convenient movement and dumping of the pressed solid raw materials, reducing the labor intensity of manually dumping the pressed solid raw materials and improving the effect and efficiency of pressing beer raw materials.

[0018] The motor drives the spiral roller body to rotate. With the movable support of the support shaft, the spacing between the spiral roller blades on the spiral roller body becomes increasingly smaller, forcing a reduction in the volume of raw material that can be pushed in one rotation of the spiral. This compresses the raw material inside the conical screen cylinder. Under immense pressure, the liquid inside the raw material is squeezed out, forming juice, which flows through the multiple filter holes on the surface of the conical screen cylinder into the hopper. The juice inside the hopper is discharged to the outside through the discharge pipe. The pressed solid raw material, because its size is larger than the filter hole openings, is... The material is intercepted inside the conical screen cylinder and continues to move forward. When it is necessary to discharge the pressed solid raw material, the manual stopping of feeding the material into the hopper is activated. The power cylinder drives the partition to move, and the support shaft provides sliding support for the partition, facilitating its movement to the outside of the discharge port. This allows the pressed solid raw material inside the conical screen cylinder to fall into the storage box through the discharge port and feed port. This enables the pressing device to conveniently press beer raw materials and facilitates the convenient discharge of the pressed solid raw materials, improving the pressing effect and efficiency of beer raw materials.

[0019] An electric trolley moves the tilting seat, tilting frame, storage bin, and pressed solid raw material to a suitable dumping position. Once the trolley is in position, an electric push rod moves the drive block, which in turn moves the drive rod. The drive rod then moves the brake block to the track surface, facilitating convenient braking of the trolley with the cooperation of two sets of brake blocks. A rotary motor drives a worm gear, which in turn drives a worm wheel, which in turn drives a tilting shaft. This allows the tilting shaft to rotate the tilting frame, which in turn rotates the storage bin. This allows the storage bin to dump the pressed solid raw material from the inside to the outside under gravity. This system enables convenient movement and dumping of the pressed solid raw material, reducing the labor intensity of manually dumping the pressed solid material and improving the convenience of dumping and discharging it. Attached Figure Description

[0020] The accompanying drawings, which are incorporated herein and form part of the specification, illustrate embodiments of the present invention and, together with the specification, further serve to explain the principles of the present invention and enable those skilled in the art to implement and use the present invention.

[0021] Figure 1 This is a front view structural diagram of the present utility model; Figure 2 This is a three-dimensional structural diagram of the present invention; Figure 3 This is a three-dimensional structural diagram of the feed hopper of this utility model; Figure 4 This is a three-dimensional structural diagram of the storage box of this utility model; Figure 5 This is a three-dimensional structural diagram of the conical screen cylinder of this utility model; Figure 6 This is a three-dimensional structural diagram of the electric trolley of this utility model; Figure 7 This is a three-dimensional structural diagram of the flip-up seat of this utility model; Figure 8 This is a three-dimensional structural diagram of the brake block of this utility model.

[0022] Figure label: 1. Support frame; 2. Pressing frame; 3. Feed hopper; 4. Track; 5. Electric trolley; 6. Tilting seat; 7. Tilting frame; 8. Storage box; 9. Feed port; 10. Feed hopper; 11. Conical screen cylinder; 12. Filter hole; 13. Spiral roller body; 14. Power motor; 15. Discharge port; 16. Support shaft; 17. Movable seat; 18. Power cylinder; 19. Partition plate; 20. Discharge pipe; 21. Electric push rod; 22. Rotating shaft; 23. Tilting shaft; 24. Worm gear; 25. Rotary motor; 26. Worm; 27. Limit block; 28. Drive block; 29. ​​Drive rod; 30. Brake block; 31. Left shaft seat; 32. Right shaft seat; 33. Control panel.

[0023] As shown in the figure, specific structures and devices are marked in the figure to clearly illustrate the structure of the embodiment of this utility model. However, this is only for illustrative purposes and is not intended to limit this utility model to this specific structure, device and environment. Those skilled in the art can adjust or modify these devices and environments according to specific needs. Detailed Implementation

[0024] The following is a detailed description of a raw material pressing device for beer brewing provided by this utility model, with reference to the accompanying drawings and specific embodiments. It should be noted that, to make the embodiments more detailed, the following embodiments are the best and preferred embodiments; those skilled in the art can also use other alternative methods to implement some known technologies; and the accompanying drawings are only for more specific description of the embodiments and are not intended to specifically limit this utility model.

[0025] It should be noted that the use of terms such as "an embodiment," "an embodiment," "an exemplary embodiment," and "some embodiments" in the specification indicates that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments (whether explicitly described or not) should be within the knowledge of those skilled in the art.

[0026] Generally, terms can be understood at least partly from their use in context. For example, depending at least partly on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in a singular sense, or a combination of features, structures, or characteristics in a plural sense. Additionally, the term "based on" can be understood not necessarily to convey an exclusive set of factors, but rather, alternatively, depending at least partly on the context, to allow for the presence of other factors that are not necessarily explicitly described.

[0027] It is understood that the meanings of “on”, “above”, and “above” in this utility model should be interpreted in the broadest manner, such that “on” not only means “directly on” something, but also includes the meaning of being “on” something with an intervening feature or layer, and that “above” or “above” not only means “on” something, but also includes the meaning of being “on” something without an intervening feature or layer.

[0028] Furthermore, spatially related terms such as “below,” “under,” “lower,” “above,” and “upper” are used herein for convenience to describe the relationship of one element or feature to one or more other elements or features, as illustrated in the accompanying drawings. Spatially related terms are intended to cover different orientations in the use or operation of the device other than those depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially related descriptive terms used herein can be interpreted similarly.

[0029] like Figures 1 to 8 As shown, an embodiment of this utility model provides a raw material pressing device for beer brewing, including a support frame 1 and a pressing frame 2. The pressing frame 2 is installed at the top of the support frame 1, and a feeding hopper 3 is installed at the bottom of the pressing frame 2. A track 4 is provided on the outside of the support frame 1 on one side of the feeding hopper 3. An electric trolley 5 is slidably installed at the top of the track 4. A tilting seat 6 is installed at the top of the electric trolley 5. A tilting frame 7 is provided on the outside of the tilting seat 6. A storage box 8 is installed inside the tilting frame 7, and the storage box 8 extends to the outside of the tilting frame 7. A lower part is provided at the bottom of the pressing frame 2 above the storage box 8. The feed inlet 9 and the top of the pressing frame 2 are equipped with a feed hopper 10. The inside of the pressing frame 2 is equipped with a conical screen cylinder 11. The conical screen cylinder 11 has a structure that is thick at one end and thin at the other end. Multiple sets of filter holes 12 with equal spacing are provided on the outer wall of the conical screen cylinder 11. The top of the support frame 1 on one side of the feed hopper 10 is equipped with a power motor 14. The output end of the power motor 14 is equipped with a spiral roller body 13, and the spiral roller body 13 extends into the inside of the conical screen cylinder 11. The spiral roller body 13 is movably connected to the pressing frame 2. The blades on the surface of the spiral roller body 13 are customized with progressively larger blades.

[0030] The spiral roller body 13 adopts a conical structure with one end thicker than the other. A discharge port 15 is provided inside the press frame 2 on one side of the spiral roller body 13. Power cylinders 18 are symmetrically installed inside the press frame 2 on the side of the discharge port 15. A support shaft 16 is installed at the end of the spiral roller body 13 away from the power motor 14, and the support shaft 16 extends to the outside of the press frame 2. The support shaft 16 is movably connected to the press frame 2. A movable seat 17 is movably fitted on the surface of the support shaft 16, and the movable seat 17 is connected to the support frame 1. A partition 19 is slidably fitted on the surface of the support shaft 16 on the side of the discharge port 15, and the output end of the power cylinder 18 is connected to the partition 19. A discharge pipe 20 is installed at the bottom of the hopper 3.

[0031] The raw material is manually poured into the conical screen cylinder 11 through the feed hopper 10. The control panel 33 is turned on to turn on the power motor 14. With the support of the support frame 1, the power motor 14 drives the spiral roller body 13 to rotate. With the movable support of the support shaft 16 by the movable seat 17, the support shaft 16 provides movable support for the spiral roller body 13. As the interval between the spiral roller blades on the spiral roller body 13 becomes smaller and smaller, the volume of raw material that can be pushed by the same spiral rotation is forced to decrease, thereby squeezing the raw material inside the conical screen cylinder 11. Under great pressure, the liquid inside the raw material is squeezed out to form juice, which flows through the multiple filter holes 12 provided on the surface of the conical screen cylinder 11 to the inside of the feed hopper 3.

[0032] The juice inside the hopper 3 is discharged to the outside through the discharge pipe 20. The pressed solid raw material, because its size is larger than the gap of the filter hole 12, is intercepted inside the conical screen cylinder 11 and continues to move forward. When it is necessary to discharge the pressed solid raw material, the operator stops pouring raw material into the feed hopper 10 and operates the control panel 33 to open the two sets of power cylinders 18. With the support of the press frame 2, the power cylinders 18 drive the partition 19 to move. The support shaft 16 provides sliding support for the partition 19, so that the partition 19 can move to the outside of the discharge port 15. This allows the pressed solid raw material inside the conical screen cylinder 11 to fall into the storage box 8 through the discharge port 15 and the feed port 9. This realizes convenient pressing of beer raw materials by the pressing device, facilitates convenient discharge of the pressed solid raw materials, and improves the pressing effect and efficiency of beer raw materials.

[0033] A rotating shaft 22 is installed on the outer wall of the tilting frame 7. A left shaft seat 31 is movably fitted on the surface of the rotating shaft 22 and is connected to the tilting seat 6. A tilting shaft 23 is installed on the outer wall of the tilting frame 7 away from the rotating shaft 22. A right shaft seat 32 is movably fitted on the surface of the tilting shaft 23 and is connected to the tilting seat 6. A rotary motor 25 is installed on the outer wall of the tilting seat 6 on the side of the tilting shaft 23. A worm gear 26 is installed at the output end of the rotary motor 25. A limit block 27 is installed on the outer wall of the tilting seat 6 on the side of the worm gear 26 and is movably connected to the worm gear 26.

[0034] A worm wheel 24 is fitted on the surface of the tilting shaft 23 on one side of the worm 26, and the worm wheel 24 meshes with the worm 26. Electric push rods 21 are symmetrically installed at the bottom of the electric trolley 5. Drive blocks 28 are installed at the output ends of the electric push rods 21. Drive rods 29 are installed on the outer walls of the drive blocks 28. Brake blocks 30 are installed on the outer walls of the drive rods 29. A control panel 33 is installed on the outer wall of the support frame 1 on one side of the hopper 3, and the output end of the control panel 33 is electrically connected to the input end of the power motor 14, the power cylinder 18, the electric trolley 5, the rotary motor 25, and the electric push rods 21.

[0035] When it is necessary to pour out the solid raw material that has been pressed inside the storage bin 8, the control panel 33 opens the electric trolley 5. Under the limiting support of the track 4, the electric trolley 5 drives the tilting seat 6, tilting frame 7, storage bin 8 and the pressed solid raw material to a suitable pouring position. After the electric trolley 5 moves to the appropriate position, the control panel 33 opens two sets of electric push rods 21. Under the support of the electric trolley 5, the electric push rods 21 drive the drive block 28 to move. The drive block 28 drives the drive rod 29 to move. The drive rod 29 drives the brake block 30 to move to the surface of the track 4, so that the electric trolley 5 can be easily braked with the cooperation of the two sets of brake blocks 30. The control panel 33 opens the rotary motor 25. Under the support of the tilting seat 6, the rotary motor 25 drives the worm gear 26 to rotate. The limiting block 27 provides movable support for the worm gear 26. Under the meshing of the worm gear 26 and the worm wheel 24.

[0036] The worm gear 26 drives the worm wheel 24 to rotate, and the worm wheel 24 drives the tilting shaft 23 to rotate. The right shaft seat 32 provides movable support for the tilting shaft 23 to facilitate the tilting shaft 23 driving the tilting frame 7 to rotate. With the left shaft seat 31 providing movable support for the rotating shaft 22, the rotating shaft 22 provides movable support for the tilting frame 7 to facilitate the tilting frame 7 driving the storage box 8 to rotate. This allows the storage box 8 to easily pour the solid raw materials that have been pressed inside to the outside under the action of gravity. This realizes the convenient movement and pouring of the pressed solid raw materials by the pressing device, reduces the labor intensity of manually pouring the pressed solid raw materials, and improves the convenience of pouring and discharging the pressed solid raw materials.

[0037] The working principle of the technical solution provided by this utility model is as follows: The power motor 14 drives the spiral roller body 13 to rotate. Under the movable support of the movable seat 17 on the support shaft 16, the interval between the spiral roller blades on the spiral roller body 13 becomes smaller and smaller, so the volume of raw material that can be pushed by the same spiral rotation is forced to decrease, thereby squeezing the raw material inside the conical screen cylinder 11. Under great pressure, the liquid inside the raw material is squeezed out to form juice, which flows through the multiple filter holes 12 provided on the surface of the conical screen cylinder 11 to the inside of the feed hopper 3. The juice inside the feed hopper 3 is discharged to the outside through the discharge pipe 20. The solid raw material after pressing is intercepted inside the conical screen cylinder 11 because its size is larger than the gap of the filter holes 12, and continues to move forward. When it is necessary to discharge the solid raw material after pressing, the manual stops pouring raw material into the feed hopper 10, the power cylinder 18 drives the partition 19 to move, and the support shaft 16 provides sliding support for the partition 19. The partition 19 is moved to the outside of the discharge port 15 to facilitate the solid raw material that has been pressed inside the conical screen cylinder 11 to fall into the storage box 8 through the discharge port 15 and the discharge port 9. The electric trolley 5 drives the tilting seat 6, the tilting frame 7, the storage box 8 and the pressed solid raw material to a suitable tilting position. When the electric trolley 5 moves to the suitable position, the electric push rod 21 drives the drive block 28 to move, the drive block 28 drives the drive rod 29 to move, and the drive rod 29 drives the brake block 30 to move to the surface of the track 4 to facilitate convenient braking of the electric trolley 5 with the cooperation of the two sets of brake blocks 30. The rotary motor 25 drives the worm gear 26 to rotate, the worm gear 26 drives the worm wheel 24 to rotate, and the worm wheel 24 drives the tilting shaft 23 to rotate, so that the tilting shaft 23 drives the tilting frame 7 to rotate, so that the tilting frame 7 drives the storage box 8 to rotate, so that the storage box 8 can tilt the pressed solid raw material inside to the outside under the action of gravity, thus completing the use of the pressing device.

[0038] This utility model encompasses any substitutions, modifications, equivalent methods, and solutions made within the spirit and scope of this utility model. To provide the public with a thorough understanding of this utility model, specific details are described in detail in the following preferred embodiments; however, those skilled in the art will fully understand this utility model even without these detailed descriptions. Furthermore, to avoid unnecessary confusion regarding the essence of this utility model, well-known methods, processes, procedures, components, and circuits are not described in detail.

[0039] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A raw material pressing device for beer brewing, characterized in that: The device includes a support frame and a pressing frame. The pressing frame is mounted on the top of the support frame, and a hopper is mounted on the bottom of the pressing frame. A track is provided on the outside of the support frame on one side of the hopper. An electric trolley is slidably mounted on the top of the track. A tilting seat is mounted on the top of the electric trolley. A tilting frame is provided on the outside of the tilting seat. A storage box is installed inside the tilting frame, extending to the outside of the tilting frame. A discharge port is provided at the bottom of the pressing frame above the storage box. A feed hopper is mounted on the top of the pressing frame. A conical screen is installed inside the pressing frame. Multiple sets of equally spaced filter holes are provided on the outer wall of the conical screen. A power motor is mounted on the top of the support frame on one side of the feed hopper. A spiral roller body is mounted on the output end of the power motor, extending into the interior of the conical screen. The spiral roller body is movably connected to the pressing frame. A discharge port is provided inside the pressing frame on one side of the spiral roller body.

2. The raw material pressing apparatus for beer brewing according to claim 1, characterized in that: The pressing frame on one side of the discharge port is symmetrically equipped with power cylinders. The end of the spiral roller body away from the power motor is equipped with a support shaft, which extends to the outside of the pressing frame and is movably connected to the pressing frame.

3. The raw material pressing apparatus for beer brewing according to claim 2, characterized in that: The surface of the support shaft is movably fitted with a movable seat, and the movable seat is connected to the support frame. A partition is slidably fitted on the surface of the support shaft on one side of the discharge port, and the output end of the power cylinder is connected to the partition. A discharge pipe is installed at the bottom of the hopper.

4. The raw material pressing apparatus for beer brewing according to claim 1, characterized in that: A rotating shaft is installed on the outer wall of the flipping frame, and a left shaft seat is movably fitted onto the surface of the rotating shaft, and the left shaft seat is connected to the flipping frame.

5. The raw material pressing apparatus for beer brewing according to claim 4, characterized in that: A flipping shaft is installed on the outer wall of the flipping frame on the side away from the rotating shaft. A right shaft seat is movably fitted onto the surface of the flipping shaft, and the right shaft seat is connected to the flipping seat.

6. The raw material pressing apparatus for beer brewing according to claim 5, characterized in that: A rotary motor is installed on the outer wall of the flipping seat on one side of the flipping shaft, and a worm gear is installed at the output end of the rotary motor.

7. The raw material pressing apparatus for beer brewing according to claim 6, characterized in that: A limit block is installed on the outer wall of the flip seat on one side of the worm gear, and the limit block is movably connected to the worm gear.

8. The raw material pressing apparatus for beer brewing according to claim 7, characterized in that: A worm wheel is fitted onto the surface of the flipping shaft on one side of the worm, and the worm wheel meshes with the worm.

9. The raw material pressing apparatus for beer brewing according to claim 1, characterized in that: The electric trolley has electric push rods symmetrically installed at its bottom. Each electric push rod has a drive block installed at its output end. Each drive block has a drive rod installed on its outer wall. Each drive rod has a brake block installed on its outer wall.

10. The raw material pressing apparatus for beer brewing according to claim 9, characterized in that: A control panel is installed on the outer wall of the support frame on one side of the hopper, and the output end of the control panel is electrically connected to the input end of the power motor, power cylinder, electric trolley, rotary motor, and electric push rod.

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