An oxygen-increasing cleaning device for ham production and processing

Abstract

The present application relates to ham production and processing technology field, and disclose a kind of for ham production and processing oxygenation cleaning device, including cleaning pool, the outside of the cleaning pool is provided with oxygenation mechanism, the upper of cleaning pool is provided with separate rotating mechanism;Oxygenation mechanism can deliver a large amount of oxygen-containing bubbles to water and back and forth to improve the contact uniformity of water and air.This oxygenation cleaning device for ham production and processing is provided with oxygenation mechanism, which can use oxygenation pump to deliver compressed air to oxygenation pipe through spring hose, and finally a large number of fine bubbles are evenly scattered from the aeration head, so that the bubbles are fully distributed in the water in the cleaning pool.At the same time, the first servo motor drives the rotating shaft to rotate, and the lifting frame drives the oxygenation pipe and the aeration head to release bubbles in water bodies of different depths along the guide column at a uniform speed up and down reciprocating motion, and the high-dissolved oxygen water body inhibits the reproduction of anaerobic microorganisms on the one hand, and improves the safety of ham after cleaning.

Description

Technical Field

[0001] This invention relates to the field of ham production and processing technology, specifically to an oxygenation and cleaning device for ham production and processing. Background Technology

[0002] The ham oxygenation cleaning system is a specialized piece of equipment or process for cleaning ham after curing. It utilizes an oxygenation pump and air oxygenation pipe installed at the bottom of the cleaning tank to generate a large number of bubbles, which impact, rub, and turn the ham to remove surface dirt, salt, and impurities. This achieves a highly efficient, clean, and water-saving cleaning process, and is equipped with a clean water rinsing tank to ensure final cleanliness.

[0003] Traditional oxygen-enriched cleaning devices used in ham production and processing can only achieve basic cleaning effects in actual use. However, some stacked ham surfaces cannot be fully impacted by the air bubbles, and impurities remaining in the corners are difficult to clean effectively, resulting in cleaning dead spots. Salt scale, mucus, and mold on some ham surfaces are not thoroughly removed, leading to a reduction in cleaning quality. Summary of the Invention

[0004] The purpose of this invention is to provide an oxygenation cleaning device for ham production and processing, so as to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: an oxygenation and cleaning device for ham production and processing, comprising a cleaning tank, an oxygenation mechanism provided on the outside of the cleaning tank, and a separation and rotation mechanism provided above the cleaning tank. The oxygenation mechanism can deliver a large number of oxygen-containing bubbles into the water and move up and down to improve the uniformity of contact between the water and the air. The separating and rotating mechanism can separate and fix the ham and rotate it at a uniform speed for cleaning.

[0006] Preferably, the aeration mechanism includes an aeration pump, the outer surface of which is fixedly connected to the outer surface of the cleaning tank. Two first servo motors are installed above the cleaning tank. The output ends of the first servo motors are fixedly connected to rotating shafts. Two steel wire ropes are sleeved on the outer surface of each rotating shaft. The four steel wire ropes are fixedly connected to a lifting frame. Four guide columns are slidably connected to the inner wall of the lifting frame. The outer surface of each guide column is fixedly connected to the inner wall of the cleaning tank. An aeration pipe is fixedly connected to the inner wall of the lifting frame. Several aeration heads are fixedly connected to the outer surface of the aeration pipe. The output end of the aeration pump is fixedly connected to a spring hose. The bottom end of the spring hose is fixedly connected to the outer surface of the aeration pipe.

[0007] Preferably, the separating rotation mechanism includes a fixed frame, the outer surface of which is fixedly connected to the two sides of the cleaning pool, a lifting plate slidably connected to the inner wall of the fixed frame, a second servo motor fixedly connected to the upper surface of the fixed frame, a screw fixedly connected to the output end of the second servo motor, the outer surface of the screw rotatably connected to the inner wall of the fixed frame, and the outer surface of the screw threadedly connected to the inner wall of the lifting plate. A plurality of rotating columns are rotatably connected to the inner wall of the lifting plate, each rotating column having a fixed clamp fixedly connected to its bottom end. Two rotating columns have first pulleys fixedly connected to their top ends, and the outer surfaces of the two first pulleys are rotatably connected to a first synchronous belt. A plurality of second pulleys are arranged above the lifting plate, the inner wall of each second pulley being fixedly connected to the top end of a rotating column, and a second synchronous belt rotatably connected to the outer surface of each group of second pulleys. A third servo motor is fixedly connected to the top end of one of the rotating columns.

[0008] Preferably, the bottom surface of the cleaning pool is fixedly connected to four support legs, and the bottom end of each support leg is fixedly connected to a base.

[0009] Preferably, a first motor frame is fixedly connected to the outer surface of each first servo motor, and the side of each first motor frame near the cleaning tank is fixedly connected to the side of the cleaning tank away from the rotating shaft.

[0010] Preferably, two stabilizing blocks are fixedly connected to the outer surface of each of the rotating shafts, and the bottom surface of each stabilizing block is fixedly connected to the upper surface of the cleaning tank.

[0011] Preferably, four retaining rings are fixedly connected to the outer surface of each of the rotating shafts, and the outer surface of each retaining ring is in contact with the outer surface of the wire rope.

[0012] Preferably, a drain pipe is fixedly connected to the bottom surface of the cleaning tank, and a solenoid valve is fixedly connected to the outer surface of the drain pipe.

[0013] Preferably, a baffle is fixedly connected to the upper surface of the lifting frame, and the spring hose is located inside the baffle.

[0014] Preferably, the upper surface of the third servo motor is fixedly connected to a second motor frame, and the bottom surface of the second motor frame is fixedly connected to the upper surface of the lifting plate.

[0015] Compared with the prior art, the beneficial effects achieved by the present invention are: First, this invention, by incorporating an oxygenation mechanism, utilizes an oxygenation pump to deliver compressed air through a spring hose into the oxygenation pipe. This results in a large number of fine bubbles being evenly distributed from the aeration head, ensuring the bubbles are fully distributed throughout the water in the cleaning tank. Simultaneously, a first servo motor drives a rotating shaft, and the retraction of the steel wire rope causes the lifting frame to move up and down at a uniform speed along the guide column. This causes the oxygenation pipe and aeration head to release bubbles at different depths in the water, improving the overall dissolved oxygen uniformity of the water. The high dissolved oxygen water inhibits the growth of anaerobic microorganisms, enhancing the safety of the ham after cleaning. Furthermore, the densely flowing bubbles continuously scour the surface of the ham, loosening any attached impurities.

[0016] Secondly, this invention, by incorporating a separating rotation mechanism, can clamp and fix individual hams separately using a fixing clamp, thus separating multiple hams during the cleaning process and preventing them from stacking and obstructing each other. This ensures that every surface can directly contact the air bubbles and water flow, eliminating cleaning dead zones present in traditional batch cleaning methods. The second servo motor drives the screw to rotate, which in turn drives the lifting plate to move downwards along the inner wall of the fixing frame, immersing the fixed hams entirely into the water in the cleaning tank. This eliminates the need for manual feeding and unloading, reducing workload. After the third servo motor is activated, it drives all rotating columns to rotate synchronously and uniformly through the transmission of the first pulley, the first synchronous belt, the second pulley, and the second synchronous belt. This, in turn, drives the hams clamped by the fixing clamps to rotate uniformly, ensuring that all parts of the hams are evenly washed by the rising air bubbles. This allows the salt scale, mucus, and mold adhering to the ham surface to loosen and fall off, effectively improving the overall cleaning quality and meeting the cleanliness requirements of industrial ham processing. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a perspective view of the oxygenation pump of the present invention; Figure 3 This is a perspective view of the cleaning tank of the present invention in cross-section; Figure 4 This is a perspective view of the lifting frame of the present invention from the right side; Figure 5 This is a perspective view of the lifting plate of the present invention; Figure 6 This is a perspective view of the fixing clip of the present invention.

[0018] The components include: 1. Cleaning tank; 2. Aeration mechanism; 201. Aeration pump; 202. First servo motor; 203. Rotating shaft; 204. Steel wire rope; 205. Lifting frame; 206. Guide column; 207. Spring hose; 208. Aeration pipe; 209. Aeration head; 3. Separating rotation mechanism; 301. Fixing frame; 302. Lifting plate; 303. Second servo motor; 304. Screw; 305. Third servo motor; 306. Rotating column; 307. Fixing clamp; 308. First pulley; 309. First synchronous belt; 310. Second pulley; 311. Second synchronous belt; 4. Support leg; 5. Base; 6. First motor frame; 7. Stabilizing block; 8. Retaining ring; 9. Drain pipe; 10. Solenoid valve; 11. Baffle frame; 12. Second motor frame. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Example 1 Please see Figure 1-6 An oxygenation and cleaning device for ham production and processing includes a cleaning tank 1, an oxygenation mechanism 2 disposed on the outside of the cleaning tank 1, and a separation and rotation mechanism 3 disposed above the cleaning tank 1. The oxygenation mechanism 2 includes an oxygenation pump 201, the outer surface of which is fixedly connected to the outer surface of the cleaning tank 1. Two first servo motors 202 are disposed above the cleaning tank 1, and the output ends of the first servo motors 202 are fixedly connected to rotating shafts 203. Two steel wire ropes 204 are sleeved on the outer surface of each rotating shaft 203, and the four steel wire ropes 204 are fixedly connected to a lifting mechanism. The inner wall of the lifting frame 205 is slidably connected with four guide columns 206. The outer surface of each guide column 206 is fixedly connected to the inner wall of the cleaning tank 1. The inner wall of the lifting frame 205 is fixedly connected with an oxygenation pipe 208. The outer surface of the oxygenation pipe 208 is fixedly connected with several aeration heads 209. The output end of the oxygenation pump 201 is fixedly connected with a spring hose 207. The bottom end of the spring hose 207 is fixedly connected to the outer surface of the oxygenation pipe 208. By setting up the oxygenation mechanism 2, a large number of oxygen-containing bubbles can be delivered to the water and the pump can move up and down to improve the uniformity of water-air contact.

[0021] The bottom surface of the cleaning tank 1 is fixedly connected with four support legs 4, and the bottom end of each support leg 4 is fixedly connected with a base 5. By setting the support legs 4 and the base 5, the cleaning tank 1 is stabilized, preventing the device from shaking or shifting significantly during the cleaning operation and improving the stability of the equipment operation.

[0022] Each first servo motor 202 has a first motor frame 6 fixedly connected to its outer surface. The side of each first motor frame 6 closest to the cleaning tank 1 is fixedly connected to the side of the cleaning tank 1 away from the rotating shaft 203. The first motor frame 6 provides stable support for the first servo motor 202, preventing the first servo motor 202 from shifting position during operation and ensuring the stability of the transmission process of the rotating shaft 203.

[0023] Two stabilizing blocks 7 are fixedly connected to the outer surface of each rotating shaft 203. The bottom surface of each stabilizing block 7 is fixedly connected to the upper surface of the cleaning tank 1. The stabilizing blocks 7 limit and fix the installation position of the rotating shaft 203, reduce the radial runout generated during the rotation of the rotating shaft 203, and further improve the smoothness of the transmission structure operation.

[0024] Four retaining rings 8 are fixedly connected to the outer surface of each rotating shaft 203. The outer surface of each retaining ring 8 is in contact with the outer surface of the wire rope 204. The retaining rings 8 limit the winding position of the wire rope 204 on the rotating shaft 203 to prevent slippage or misalignment when the wire rope 204 is wound and released, thus ensuring the stability of the lifting frame 205 during the lifting process.

[0025] A drain pipe 9 is fixedly connected to the bottom surface of the cleaning tank 1, and a solenoid valve 10 is fixedly connected to the outer surface of the drain pipe 9. By controlling the solenoid valve 10 to control the opening and closing of the drain pipe 9, the wastewater after the cleaning operation can be automatically discharged without manual drainage operation, which further reduces the intensity of manual operation and improves the convenience of device operation.

[0026] A baffle 11 is fixedly connected to the upper surface of the lifting frame 205. The spring hose 207 is located inside the baffle 11. The baffle 11 limits and protects the spring hose 207 as it rises and falls with the lifting frame 205, preventing the spring hose 207 from shaking or shifting during the lifting process and from getting tangled or scratching other components inside the device.

[0027] The specific implementation method of this embodiment is as follows: In use, the prepared cleaning water is injected into the cleaning tank 1, and then the oxygenation pump 201 and two first servo motors 202 are started. The oxygenation pump 201 delivers compressed air through the spring hose 207 to the inside of the oxygenation pipe 208. Finally, a large number of fine oxygen-containing bubbles are released into the water from the aeration head 209 on the surface of the oxygenation pipe 208. At the same time, the two first servo motors 202 synchronously drive the corresponding rotating shaft 203 to rotate alternately in forward and reverse directions. When the rotating shaft 203 rotates, the steel wire rope 204 is wound up and down, driving the lifting frame 205 to move up and down at a uniform speed along the four guide columns 206. This causes the oxygenation pipe 208 and the aeration head 209 to release bubbles in the water at different depths, so that the bubbles are evenly distributed in the water of the entire cleaning tank 1, thereby increasing the overall dissolved oxygen content of the water. The aeration head 209 aeration diffusion unit has an elastic membrane micropore self-closing anti-clogging and backflow prevention structure. When the air supply is stopped, the internal air pressure drops and the elastic membrane micropores close quickly to avoid blockage and backflow.

[0028] Example 2 Please see Figure 1-6 The separating rotation mechanism 3 includes a fixed frame 301. The outer surface of the fixed frame 301 is fixedly connected to the two sides of the washing pool 1. A lifting plate 302 is slidably connected to the inner wall of the fixed frame 301. A second servo motor 303 is fixedly connected to the upper surface of the fixed frame 301. A screw 304 is fixedly connected to the output end of the second servo motor 303. The outer surface of the screw 304 is rotatably connected to the inner wall of the fixed frame 301. The outer surface of the screw 304 is threadedly connected to the inner wall of the lifting plate 302. Several rotating columns 306 are rotatably connected to the inner wall of the lifting plate 302. A fixing clamp is fixedly connected to the bottom end of each rotating column 306. 307, wherein the top ends of two rotating columns 306 are fixedly connected to first pulleys 308, and the outer surfaces of the two first pulleys 308 are rotatably connected to a first synchronous belt 309. Several second pulleys 310 are arranged above the lifting plate 302. The inner wall of each second pulley 310 is fixedly connected to the top end of the rotating column 306. The outer surface of each group of second pulleys 310 is rotatably connected to a second synchronous belt 311. A third servo motor 305 is fixedly connected to the top end of one of the rotating columns 306. By setting the separation rotation mechanism 3, the ham can be separated and fixed and rotated at a uniform speed for cleaning.

[0029] The upper surface of the third servo motor 305 is fixedly connected to the second motor frame 12. The bottom surface of the second motor frame 12 is fixedly connected to the upper surface of the lifting plate 302. The third servo motor 305 is fixedly supported by the second motor frame 12 to prevent the third servo motor 305 from shifting due to its own vibration during operation and to ensure the stability of the rotation transmission process.

[0030] The specific implementation of this embodiment is as follows: In use, the hams to be processed are first clamped and fixed one by one using the fixing clamp 307, so that each ham is spaced apart to avoid stacking and obstructing each other during the subsequent cleaning process. Then, the second servo motor 303 is started, which drives the screw 304 to rotate. The rotation of the screw 304 drives the lifting plate 302 to slide downward along the inner wall of the fixing frame 301, immersing the fixed hams into the water of the cleaning pool 1. Then, oxygenation is performed. During this process, the third servo motor 305 is started at the same time, which drives the rotating column 306 connected to it to rotate. The rotating column 306 drives the first pulley 308 and the second pulley 310 at the top to rotate synchronously. The pulley 308 drives another first pulley 308 to rotate via the first synchronous belt 309. The second pulley 310 drives the other second pulleys 310 in the same group to rotate via the second synchronous belt 311. Finally, all rotating columns 306 rotate synchronously and uniformly, which in turn drives the ham held by each fixed clamp 307 to rotate uniformly. This causes the rising dense air bubbles to evenly wash the surface of the ham, allowing the salt scale, mucus and mold attached to the surface of the ham to be fully loosened and removed. After cleaning, the second servo motor 303 rotates in the opposite direction, driving the lifting plate 302 to reset upwards, bringing the cleaned ham out of the water. Then, the solenoid valve 10 is opened, and the wastewater after cleaning is discharged through the drain pipe 9, thus completing the oxygenation cleaning operation of the entire ham.

[0031] The working principle of this invention is as follows: In use, the prepared cleaning water is injected into the cleaning tank 1. First, the hams to be processed are clamped and fixed one by one using the fixing clamps 307, maintaining a gap between each ham to prevent them from stacking and obstructing each other during subsequent cleaning. Then, the second servo motor 303 is started, driving the screw 304 to rotate. The rotation of the screw 304 drives the lifting plate 302 to slide downwards along the inner wall of the fixing frame 301, immersing the fixed hams entirely into the water in the cleaning tank 1. Subsequently, the oxygenation pump 201 and the two first servo motors 202 are started. Compressed air is delivered through spring hose 207 to the interior of oxygenation pipe 208, and finally a large number of fine oxygen-containing bubbles are released into the water from the aeration head 209 on the surface of oxygenation pipe 208. At the same time, two first servo motors 202 synchronously drive the corresponding rotating shafts 203 to rotate alternately in forward and reverse directions. When the rotating shafts 203 rotate, the steel wire rope 204 is wound and released, driving the lifting frame 205 to move up and down at a uniform speed along the four guide columns 206. This causes the oxygenation pipe 208 and the aeration head 209 to release bubbles in the water at different depths, so that the bubbles are evenly distributed in the water of the entire cleaning tank 1, thereby improving the water quality. The overall dissolved oxygen capacity of the aeration head 209 aeration diffusion unit features a self-closing anti-clogging and backflow prevention structure with elastic membrane micropores. When the air supply stops, the internal air pressure drops, and the elastic membrane micropores quickly close to prevent clogging and backflow. Simultaneously, the third servo motor 305 is activated, driving the connected rotating column 306 to rotate. This rotating column 306 drives the first pulley 308 and the second pulley 310 at its top to rotate synchronously. The first pulley 308 drives another first pulley 308 via a first synchronous belt 309, and the second pulley 310 drives another first pulley 308 via a second synchronous belt. 311 drives the other second pulleys 310 in the same group to rotate, which in turn drives all rotating columns 306 to rotate synchronously and at a uniform speed. This, in turn, drives the ham held by each fixed clamp 307 to rotate at a uniform speed, so that the rising dense air bubbles can evenly wash the surface of the ham, allowing the salt scale, mucus and mold attached to the surface of the ham to be fully loosened and removed. After the cleaning is completed, the second servo motor 303 rotates in the opposite direction, driving the lifting plate 302 to reset upwards, bringing the cleaned ham out of the water. Then, the solenoid valve 10 is opened, and the wastewater after cleaning is discharged through the drain pipe 9, thus completing the oxygenation cleaning operation of the entire ham.

[0032] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0033] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An oxygen-enriched cleaning device for ham production and processing, comprising a cleaning tank (1), characterized in that: An oxygenation mechanism (2) is provided on the outside of the cleaning tank (1), and a separation rotation mechanism (3) is provided above the cleaning tank (1). The oxygenation mechanism (2) can deliver a large number of oxygen-containing bubbles into the water and move up and down to improve the uniformity of contact between the water and the air. The separating rotation mechanism (3) can separate and fix the ham and rotate it at a uniform speed for cleaning.

2. The oxygenation cleaning device for ham production and processing according to claim 1, characterized in that: The oxygenation mechanism (2) includes an oxygenation pump (201), the outer surface of which is fixedly connected to the outer surface of the cleaning tank (1). Two first servo motors (202) are installed above the cleaning tank (1). The output ends of the first servo motors (202) are all fixedly connected to rotating shafts (203). Two steel wire ropes (204) are sleeved on the outer surface of each rotating shaft (203). A lifting frame (205) is fixedly connected to all four steel wire ropes (204). The inner wall of (205) is slidably connected with four guide columns (206), and the outer surface of each guide column (206) is fixedly connected to the inner wall of the cleaning tank (1). The inner wall of the lifting frame (205) is fixedly connected with an oxygenation pipe (208), and the outer surface of the oxygenation pipe (208) is fixedly connected with several aeration heads (209). The output end of the oxygenation pump (201) is fixedly connected with a spring hose (207), and the bottom end of the spring hose (207) is fixedly connected to the outer surface of the oxygenation pipe (208).

3. The oxygenation cleaning device for ham production and processing according to claim 1, characterized in that: The separating rotation mechanism (3) includes a fixed frame (301), the outer surface of which is fixedly connected to the two sides of the cleaning pool (1), a lifting plate (302) is slidably connected to the inner wall of the fixed frame (301), a second servo motor (303) is fixedly connected to the upper surface of the fixed frame (301), a screw (304) is fixedly connected to the output end of the second servo motor (303), the outer surface of the screw (304) is rotatably connected to the inner wall of the fixed frame (301), the outer surface of the screw (304) is threadedly connected to the inner wall of the lifting plate (302), and a plurality of rotating columns (306) are rotatably connected to the inner wall of the lifting plate (302). The bottom end of each rotating column (306) is fixedly connected to a fixing clamp (307), and the top ends of each of the two rotating columns (306) are fixedly connected to a first pulley (308). The outer surfaces of the two first pulleys (308) are rotatably connected to a first synchronous belt (309). Several second pulleys (310) are arranged above the lifting plate (302). The inner wall of each second pulley (310) is fixedly connected to the top end of the rotating column (306). The outer surface of each group of second pulleys (310) is rotatably connected to a second synchronous belt (311). The top end of one of the rotating columns (306) is fixedly connected to a third servo motor (305).

4. An oxygen-enriched cleaning device for ham production and processing according to claim 1, characterized in that: The bottom surface of the cleaning pool (1) is fixedly connected to four support legs (4), and the bottom end of each support leg (4) is fixedly connected to a base (5).

5. An oxygen-enriched cleaning device for ham production and processing according to claim 2, characterized in that: Each of the first servo motors (202) has a first motor frame (6) fixedly connected to its outer surface. Each of the first motor frames (6) has a side of the cleaning tank (1) that is close to the cleaning tank (1) and a side of the cleaning tank (1) that is away from the rotating shaft (203).

6. An oxygen-enriched cleaning device for ham production and processing according to claim 2, characterized in that: Two stabilizing blocks (7) are fixedly connected to the outer surface of each of the rotating shafts (203), and the bottom surface of each of the stabilizing blocks (7) is fixedly connected to the upper surface of the cleaning tank (1).

7. An oxygen-enriched cleaning device for ham production and processing according to claim 2, characterized in that: Four retaining rings (8) are fixedly connected to the outer surface of each of the rotating shafts (203), and the outer surface of each retaining ring (8) is in contact with the outer surface of the wire rope (204).

8. An oxygen-enriched cleaning device for ham production and processing according to claim 1, characterized in that: The bottom surface of the cleaning tank (1) is fixedly connected to a drain pipe (9), and the outer surface of the drain pipe (9) is fixedly connected to a solenoid valve (10).

9. An oxygen-enriched cleaning device for ham production and processing according to claim 2, characterized in that: A baffle (11) is fixedly connected to the upper surface of the lifting frame (205), and the spring hose (207) is located inside the baffle (11).

10. An oxygen-enriched cleaning device for ham production and processing according to claim 3, characterized in that: The upper surface of the third servo motor (305) is fixedly connected to the second motor frame (12), and the bottom surface of the second motor frame (12) is fixedly connected to the upper surface of the lifting plate (302).

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