Feed stirring and mixing device

Abstract

The utility model belongs to the technical field of feed, specifically a feed stirring and mixing device, comprising a device body; a motor is fixedly connected to the bottom of the device body; a first connecting rod is fixedly connected to the output end of the motor; a hinge is fixedly connected to the middle of the first connecting rod; a fixed net is fixedly connected to the inner side wall above the device body; the middle of the first connecting rod passes through the bottom of the fixed net; a second connecting rod is fixedly connected to the middle of the first connecting rod; a roller is fixedly connected to the end of the second connecting rod; a plurality of groups of iron sheets are fixedly connected to the inner side wall of the bottom of the fixed net; a groove is provided on the inner side wall of the bottom of the fixed net; when the roller is rolling and rolling, the end of the iron sheet will prevent the feed from continuing to rotate with the roller, so that the feed is fully covered on the arc surface of the iron sheet, increasing the contact area between the feed and the roller, so that the feed is fully rolled, so that the rolled feed particles have a smaller size and a consistent particle size, and the feed is easier to mix evenly during the mixing process.

Description

Technical Field

[0001] The utility model belongs to the technical field of feed, in particular to a feed stirring and mixing device. Background Art

[0002] Feed stirring and mixing device is a mixing device used to mix different types and proportions. This device is widely used in processing factories, farms, animal husbandry and aquaculture. With the application of feed stirring device, feed utilization and production efficiency are improved, and it also has a positive effect on animal digestion and absorption.

[0003] Long-term observations have found that in the process of mixing feeds, due to the different sizes and particle shapes of various feeds, it is difficult to achieve a reasonable uniformity during the mixing process. Larger particles and smaller particles are prone to stratification or local accumulation when mixed. Therefore, it is necessary to control the size of feed particles to ensure the uniformity and consistency of the particles, thereby improving the utilization rate of feeds.

[0004] To this end, the utility model provides a feed stirring and mixing device. Utility Model Content

[0005] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0006] The technical solution adopted by the utility model to solve its technical problems is: a feed stirring and mixing device described in the utility model comprises a device body; a motor is fixedly connected to the bottom of the device body; a first connecting rod is fixedly connected to the output end of the motor; a hinge is fixedly connected to the middle of the first connecting rod; a fixed net is fixedly connected to the inner side wall above the device body; the middle of the first connecting rod passes through the bottom of the fixed net; a second connecting rod is fixedly connected to the middle of the first connecting rod; a roller is fixedly connected to the end of the second connecting rod; multiple groups of iron sheets are fixedly connected to the inner side wall of the bottom of the fixed net; a groove is opened on the inner side wall of the bottom of the fixed net; a third connecting rod is hinged to the middle of the iron sheet; the third connecting rod slides on the groove; a connecting plate is hinged to the end of the third connecting rod; the connecting A plurality of groups of first springs are fixedly connected above the plate; rubber plates are fixedly connected to the ends of the adjacent first springs; the iron plate is arranged in an arc shape, and when the roller is rolling and crushing, the end of the iron plate will prevent the feed from continuing to rotate with the roller, so that the feed is fully covered on the arc surface of the iron plate, increasing the contact area between the feed and the roller, so that the feed is fully crushed and becomes fine particles, and the roller rolls on the fixed net through the iron plate, so that the third connecting rod slides back and forth on the groove, and the crushed feed falls onto the rubber plate through the fixed net, and the rubber plate is arranged in a V shape, so that the feed slides to the bottom, and the feed is mixed by rotating the auger, so that the crushed feed particles have a smaller size and a consistent particle size, so that the feed is easier to mix evenly during the mixing process.

[0007] Preferably, a plurality of groups of dredging rods are fixedly connected to the middle part of the connecting plate; the dredging rods penetrate the rubber plate and slide on the rubber plate; when the roller squeezes the iron sheet, the third connecting rod slides on the cutting groove and drives the connecting plate to move upward, and the first spring and the rubber plate cooperate with each other to contact the fixed net, so that the dredging rods fixed to the connecting plate penetrate the mesh holes between the rubber plate and the fixed net, thereby reducing the problem of the fixed net being clogged by feed particles, causing the feed to enter the stirring device below to slow down, resulting in a decrease in the mixing efficiency of the feed.

[0008] Preferably, an electric push cylinder is fixedly connected to the top of the device body; a fourth connecting rod is fixedly connected to the output end of the electric push cylinder; an annular tube is fixedly connected to the end of the fourth connecting rod; a plurality of groups of slots are opened in the middle of the annular tube; the annular tube is connected to the hot air pump through a hose; a first scraper is fixedly connected to the middle of the annular tube; the middle of the annular tube is fixedly connected to the first scraper through a plurality of groups of short rods; the end of the first scraper contacts the inner wall of the device body; the surface of the inner wall of the device body is scraped and cleaned by the first scraper, thereby reducing the phenomenon that feed particles stay in the device for a long time, causing moisture, mold or deterioration, thereby reducing the problem of contaminating the mixing of subsequent batches of raw materials and causing damage to the inside of the device. By setting the first scraper to be arc-shaped, part of the hot air is blocked by the first scraper, changing the flow direction of the hot air, increasing the airflow on the side of the annular tube close to the inner wall of the device, and blowing the first scraper after cleaning the inner wall of the device body through the hot air, blowing off the feed attached to the inner wall of the device, further strengthening the cleaning of the side wall of the device body by the first scraper.

[0009] Preferably, a first sleeve is sleeved on the middle part of the first connecting rod; a second sleeve is rotatably connected to the middle part of the first sleeve; an inner wall of the second sleeve is in close contact with the middle part of the first connecting rod; a plurality of second scrapers are fixedly connected to the middle part of the second sleeve; an end of the second scraper is in contact with the middle part of the first connecting rod; the middle part of the first sleeve is fixedly connected to the middle part of the annular tube through an elastic rope; the middle part of the first connecting rod is scraped and cleaned by the second scraper on the second sleeve, thereby reducing the long-term adhesion of feed particles to the middle part of the first connecting rod, causing corrosion to the first connecting rod, thereby extending the service life of the first connecting rod, and reducing the problems of mold and deterioration caused by the long-term adhesion of feed on the first connecting rod, resulting in contamination of the mixing of subsequent batches of feed.

[0010] Preferably, multiple groups of second springs are fixedly connected to the bottom of the first sleeve; circular rings are fixedly connected to the adjacent ends of the second springs; a baffle is fixedly connected to the middle of the first connecting rod; when the annular tube drives the first sleeve downward to the baffle position through the connecting rope, the multiple groups of second springs and the circular rings cooperate with each other to effectively absorb and disperse the energy generated during contact with the baffle, thereby reducing the impact force generated during contact, thereby reducing the risk of damage to the first sleeve and extending the service life of the first sleeve.

[0011] Preferably, a through slot 6 is provided on the first scraper 34; a magnet is fixedly connected to the middle of the through slot; a plurality of articulated frames are fixedly connected to the middle of the outer wall of the device body; a fifth connecting rod is rotatably connected to the middle of the articulated frame; an iron ball is fixedly connected to the end of the fifth connecting rod; by arranging a magnet, the iron ball is knocked on the device body, so that some feed particles attached to the inner wall of the device body fall off, thereby reducing the corrosion of the equipment caused by the feed attached to the side wall.

[0012] Preferably, a rubber ring is fixedly connected to the middle of the iron ball; by providing the rubber ring, the iron ball plays a buffering role when colliding with the outer side wall of the device body, thereby reducing the wear of the outer side wall of the device body and extending the service life of the equipment.

[0013] The beneficial effects of the utility model are as follows:

[0014] 1. The feed stirring and mixing device described in the utility model is configured with an iron sheet in an arc shape. When the roller is rolling and crushing, the end of the iron sheet will prevent the feed from continuing to rotate with the roller, so that the feed is fully covered on the arc surface of the iron sheet, increasing the contact area between the feed and the roller, so that the feed is fully crushed into fine particles, and the feed is mixed by rotating the auger, so that the crushed feed particles have a smaller size and a consistent particle size, making it easier to mix the feed evenly during the mixing process.

[0015] 2. The feed stirring and mixing device described in the utility model, through the dredging rod fixed on the connecting plate to penetrate the mesh between the rubber plate and the fixed net, reduces the problem of the fixed net being blocked by feed particles, causing the feed to enter the stirring device below to slow down, resulting in a decrease in the mixing efficiency of the feed. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The utility model will be further described below in conjunction with the accompanying drawings.

[0017] Figure 1 It is a stereogram in the utility model;

[0018] Figure 2 It is a cross-sectional structural schematic diagram of the utility model;

[0019] Figure 3It is a schematic diagram of the matching structure of the iron sheet and the fixed net in the utility model;

[0020] Figure 4 It is a schematic diagram of the cross-sectional structure of the annular tube in the utility model;

[0021] Figure 5 It is a schematic diagram of the matching structure of the first sleeve and the second sleeve in the utility model;

[0022] In the figure: 1. device body; 11. motor; 12. first connecting rod; 13. auger; 14. fixed net; 15. second connecting rod; 16. roller; 17. iron sheet; 18. cutting groove; 19. third connecting rod; 101. connecting plate; 102. first spring; 103. rubber plate; 2. dredging rod; 3. electric push cylinder; 31. fourth connecting rod; 32. annular tube; 33. slot; 34. first scraper; 4. first sleeve; 41. second sleeve; 42. second scraper; 5. second spring; 51. circular ring; 52. baffle; 6. through groove; 61. magnet; 62. articulated frame; 63. fifth connecting rod; 64. iron ball; 7. rubber ring. DETAILED DESCRIPTION

[0023] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0024] like Figures 1 to 3As shown, a feed stirring and mixing device described in an embodiment of the utility model comprises a device body 1; a motor 11 is fixedly connected to the bottom of the device body 1; a first connecting rod 12 is fixedly connected to the output end of the motor 11; a hinge 13 is fixedly connected to the middle of the first connecting rod 12; a fixed net 14 is fixedly connected to the inner wall above the device body 1; the middle of the first connecting rod 12 passes through the bottom of the fixed net 14; a second connecting rod 15 is fixedly connected to the middle of the first connecting rod 12; a roller 16 is fixedly connected to the end of the second connecting rod 15; a plurality of groups of iron sheets 17 are fixedly connected to the inner wall at the bottom of the fixed net 14; the inner wall at the bottom of the fixed net 14 A slot 18 is provided; a third connecting rod 19 is hingedly connected to the middle of the iron sheet 17; the third connecting rod 19 slides on the slot 18; a connecting plate 101 is hingedly connected to the end of the third connecting rod 19; a plurality of first springs 102 are fixedly connected to the top of the connecting plate 101; a rubber plate 103 is fixedly connected to the end of the adjacent first spring 102; when working, feed is poured into the fixed net 14 through the feed inlet, and fine feed particles are screened by the fixed net 14 and enter the bottom, and the motor 11 is turned on to control the first connecting rod 12 to rotate, and the first connecting rod 12 rotates while driving the auger 13 and the roller 16 to work, and the roller 16 When rotating on the fixed net 14, large feed particles are crushed into small particles. When the roller 16 rotates and crushes, a forward force is applied to the feed. Since the friction between the feed and the roller 16 is not enough to resist this force, the feed will rotate with the roller 16. When the feed rotates with the roller 16, the actual crushing effect is weakened, reducing the probability of large feed particles passing through the fixed net 14. By setting the iron sheet 17 in an arc shape, when the roller 16 rolls and crushes, the end of the iron sheet 17 will prevent the feed from continuing to rotate with the roller 16, so that the feed is fully covered on the arc surface of the iron sheet 17, increasing the contact between the feed and the roller 1 6, so that the feed is fully crushed into fine particles, and the roller 16 rolls on the fixed net 14 through the iron sheet 17, so that the third connecting rod 19 slides back and forth on the groove 18, and the crushed feed falls onto the rubber plate 103 through the fixed net 14. The rubber plate 103 is set in a V shape, so that the feed slides to the bottom, and the feed is mixed by rotating the auger 13, so that the crushed feed particles have a smaller size and a consistent particle size, so that the feed is easier to mix evenly during the mixing process. After the mixing is completed, the motor 11 is turned off, the discharge port is opened, and the feed is taken out to complete the stirring and mixing of the feed.

[0025] like Figure 3As shown, a plurality of groups of dredging rods 2 are fixedly connected to the middle of the connecting plate 101; the dredging rods 2 penetrate the rubber plate 103 and slide on the rubber plate 103; when the roller 16 squeezes the iron sheet 17, the third connecting rod 19 slides on the cutting groove 18 and drives the connecting plate 101 to move upward, and the first spring 102 and the rubber plate 103 cooperate with each other to contact the fixed net 14, so that the dredging rods 2 fixed to the connecting plate 101 penetrate the mesh between the rubber plate 103 and the fixed net 14, thereby reducing the problem that the fixed net 14 is blocked by feed particles, causing the feed to enter the stirring device below to slow down, resulting in a decrease in the mixing efficiency of the feed.

[0026] like Figure 4 As shown, an electric push cylinder 3 is fixedly connected to the top of the device body 1; a fourth connecting rod 31 is fixedly connected to the output end of the electric push cylinder 3; an annular tube 32 is fixedly connected to the end of the fourth connecting rod 31; a plurality of slots 33 are provided in the middle of the annular tube 32; the annular tube 32 is connected to the hot air pump through a hose; a first scraper 34 is fixedly connected to the middle of the annular tube 32; the middle of the annular tube 32 is fixedly connected to the first scraper 34 through a plurality of short rods; the end of the first scraper 34 contacts the inner wall of the device body 1; the electric push cylinder 3 is turned on to control the annular tube 32 to move up and down, and the hot air pump is turned on to allow the hot air to enter the annular tube 32 through the hose, and the hot air inside the annular tube 32 flows into the device body 1 through the slots 33. When the annular tube 32 moves up and down, the first scraper 34 scrapes and cleans the inner wall surface of the device body 1, reducing the phenomenon that the feed particles stay in the device for a long time, causing moisture, mold or deterioration, thereby reducing the problem of contaminating the mixing of subsequent batches of raw materials and causing damage to the inside of the device. By setting the first scraper 34 to be arc-shaped, part of the hot air is blocked by the first scraper 34, changing the flow direction of the hot air, increasing the airflow on the side of the annular tube 32 close to the inner wall of the device, and the first scraper 34 cleans the inner wall of the device body 1 through the hot air and then blows it to blow off the feed attached to the inner wall of the device, further strengthening the cleaning of the side wall of the device body 1 by the first scraper 34.

[0027] like Figure 5As shown, a first sleeve 4 is sleeved on the middle part of the first connecting rod 12; a second sleeve 41 is rotatably connected to the middle part of the first sleeve 4; the inner side wall of the second sleeve 41 is in close contact with the middle part of the first connecting rod 12; a plurality of second scrapers 42 are fixedly connected to the middle part of the second sleeve 41; the end of the second scraper 42 is in contact with the middle part of the first connecting rod 12; the middle part of the first sleeve 4 is fixedly connected to the middle part of the annular tube 32 through an elastic rope; when the annular tube 32 moves up and down, the first sleeve 4 is driven to move through the connecting rope, and when the first sleeve 4 moves up and down, the second sleeve 41 is driven to move in the middle part of the first connecting rod 12, and at the same time, the second scraper 42 on the second sleeve 41 will scrape and clean the middle part of the first connecting rod 12, reducing the long-term adhesion of feed particles to the middle part of the first connecting rod 12, causing corrosion to the first connecting rod 12, thereby extending the service life of the first connecting rod 12, and reducing the mold and deterioration caused by the long-term adhesion of feed on the first connecting rod 12, resulting in contamination of the subsequent batches of feed mixing.

[0028] like Figure 5 As shown, multiple groups of second springs 5 ​​are fixedly connected to the bottom of the first sleeve 4; circular rings 51 are fixedly connected to the adjacent ends of the second springs 5; a baffle 52 is fixedly connected to the middle of the first connecting rod 12; when the annular tube 32 drives the first sleeve 4 to move downward to the position of the baffle 52 through the connecting rope, the multiple groups of second springs 5 ​​and the circular ring 51 cooperate with each other to effectively absorb and disperse the energy generated when contacting with the baffle 52, thereby reducing the impact force generated during contact, thereby reducing the risk of damage to the first sleeve 4 and extending the service life of the first sleeve 4.

[0029] like Figure 1 and Figure 4 As shown, a through slot 6 is provided on the first scraper 34; a magnet 61 is fixedly connected to the middle of the through slot 6; a plurality of articulated frames 62 are fixedly connected to the middle of the outer wall of the device body 1; a fifth connecting rod 63 is rotatably connected to the middle of the articulated frame 62; an iron ball 64 is fixedly connected to the end of the fifth connecting rod 63; when the first scraper 34 moves to a position corresponding to the iron ball 64, the magnet 61 inside the first scraper 34 will attract the iron ball 64 on the fifth connecting rod 63 to shake and knock on the side wall of the device body 1, and when the magnet 61 is away from the iron ball 64, the iron ball 64 returns to its original position. By setting the magnet 61, the iron ball 64 knocks on the device body 1, so that some feed particles attached to the inner wall of the device body 1 fall off, thereby reducing the corrosion of the equipment caused by the feed attached to the side wall.

[0030] like Figure 1 to Figure 2 As shown, a rubber ring 7 is fixedly connected to the middle of the iron ball 64; by providing the rubber ring 7, the iron ball 64 plays a buffering role when colliding with the outer wall of the device body 1, thereby reducing the wear of the outer wall of the device body 1 and extending the service life of the equipment.

[0031] Working principle: Pour the feed into the fixed net 14 through the feed inlet, and the fine feed particles enter the bottom through the screening of the fixed net 14. Turn on the motor 11 to control the first connecting rod 12 to rotate. The first connecting rod 12 rotates and drives the auger 13 and the roller 16 to work. The roller 16 rolls the large feed particles into small particles when it rotates on the fixed net 14. When the roller 16 rotates and rolls, it applies a forward force to the feed. Since the friction between the feed and the roller 16 is not enough to resist this force, the feed will rotate with the roller 16. When the feed rotates with the roller 16, the actual rolling effect is weakened, reducing the probability of large feed particles passing through the fixed net 14. The iron sheet 17 is set to an arc shape, and the roller 16 During rolling and crushing, the end of the iron sheet 17 will prevent the feed from continuing to rotate with the roller 16, so that the feed is fully covered on the arc surface of the iron sheet 17, increasing the contact area between the feed and the roller 16, so that the feed is fully crushed and becomes fine particles. The roller 16 rolls on the fixed net 14 through the iron sheet 17, so that the third connecting rod 19 slides back and forth on the groove 18, and the crushed feed falls onto the rubber plate 103 through the fixed net 14. The rubber plate 103 is set in a V shape, so that the feed slides to the bottom, and the feed is mixed by rotating the auger 13, so that the crushed feed particles have a smaller size and a consistent particle size, so that the feed is easier to mix evenly during the mixing process. After the mixing is completed, the motor 11 is turned off and the outlet is turned on The feed inlet is used to take out the feed, and the stirring and mixing of the feed is completed. When the roller 16 squeezes the iron sheet 17, the third connecting rod 19 slides on the cutting groove 18 and drives the connecting plate 101 to move upward. The first spring 102 and the rubber plate 103 cooperate with each other to contact the fixed net 14, so that the dredging rod 2 fixed to the connecting plate 101 passes through the mesh between the rubber plate 103 and the fixed net 14, reducing the problem that the fixed net 14 is blocked by feed particles, causing the feed to enter the stirring device below to slow down, resulting in a decrease in the mixing efficiency of the feed. The electric push cylinder 3 is turned on to control the annular tube 32 to move up and down, and the hot air pump is turned on to allow the hot air to enter the inside of the annular tube 32 through the hose. The hot air inside the annular tube 32 flows into the device body 1 through the slot 33. When the annular tube 32 moves up and down, the inner wall surface of the device body 1 is scraped and cleaned by the first scraper 34. When the annular tube 32 moves up and down, the first sleeve 4 is driven to move by the connecting rope. When the first sleeve 4 moves up and down, it drives the second sleeve 41 to move in the middle of the first connecting rod 12. At the same time, the second scraper 42 on the second sleeve 41 scrapes and cleans the middle of the first connecting rod 12. When the annular tube 32 drives the first sleeve 4 to move downward to the baffle 52 position through the connecting rope, the multiple groups of second springs 5 ​​and the circular ring 51 effectively absorb and disperse the energy generated when contacting with the baffle 52 through mutual cooperation, thereby reducing the impact force generated during contact, thereby reducing the risk of damage to the first sleeve 4 and extending the service life of the first sleeve 4.When the first scraper 34 moves to the position corresponding to the iron ball 64, the magnet 61 inside the first scraper 34 will attract the iron ball 64 on the fifth connecting rod 63 to shake and knock against the side wall of the device body 1. When the magnet 61 moves away from the iron ball 64, the iron ball 64 returns to its original position. By setting the rubber ring 7, the iron ball 64 plays a buffering role when colliding with the outer wall of the device body 1, thereby reducing the wear of the outer wall of the device body 1 and extending the service life of the equipment.

[0032] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A feed stirring and mixing device, comprising a device body (1); characterized in that: A motor (11) is fixedly connected to the bottom of the device body (1); a first connecting rod (12) is fixedly connected to the output end of the motor (11); a hinge (13) is fixedly connected to the middle of the first connecting rod (12); a fixed net (14) is fixedly connected to the upper inner wall of the device body (1); the middle of the first connecting rod (12) passes through the bottom of the fixed net (14); a second connecting rod (15) is fixedly connected to the middle of the first connecting rod (12); a roller (16) is fixedly connected to the end of the second connecting rod (15); A plurality of groups of iron sheets (17) are fixedly connected to the inner side wall of the bottom of the fixed net (14); a groove (18) is formed on the inner side wall of the bottom of the fixed net (14); a third connecting rod (19) is hingedly connected to the middle of the iron sheet (17); the third connecting rod (19) slides on the groove (18); a connecting plate (101) is hingedly connected to the end of the third connecting rod (19); a plurality of groups of first springs (102) are fixedly connected above the connecting plate (101); and a rubber plate (103) is fixedly connected to the end adjacent to the first spring (102).

2. A feed stirring and mixing device according to claim 1, characterized in that: A plurality of groups of dredging rods (2) are fixedly connected to the middle of the connecting plate (101); the dredging rods (2) penetrate the rubber plate (103) and slide on the rubber plate (103).

3. A feed stirring and mixing device according to claim 2, characterized in that: The top of the device body (1) is fixedly connected to an electric push cylinder (3); the output end of the electric push cylinder (3) is fixedly connected to a fourth connecting rod (31); the end of the fourth connecting rod (31) is fixedly connected to an annular tube (32); a plurality of groups of slots (33) are provided in the middle of the annular tube (32); the annular tube (32) is connected to a hot air pump via a hose; a first scraper (34) is fixedly connected to the middle of the annular tube (32); the middle of the annular tube (32) is fixedly connected to the first scraper (34) via a plurality of groups of short rods; the end of the first scraper (34) contacts the inner wall of the device body (1).

4. A feed stirring and mixing device according to claim 3, characterized in that: The middle of the first connecting rod (12) is sleeved with a first sleeve (4); the middle of the first sleeve (4) is rotatably connected to a second sleeve (41); the inner wall of the second sleeve (41) is in close contact with the middle of the first connecting rod (12); the middle of the second sleeve (41) is fixedly connected with a plurality of second scrapers (42); the ends of the second scrapers (42) are in contact with the middle of the first connecting rod (12); the middle of the first sleeve (4) is fixedly connected to the middle of the annular tube (32) via an elastic rope.

5. A feed stirring and mixing device according to claim 4, characterized in that: A plurality of groups of second springs (5) are fixedly connected to the bottom of the first sleeve (4); circular rings (51) are fixedly connected to the ends of adjacent second springs (5); and a baffle (52) is fixedly connected to the middle of the first connecting rod (12).

6. A feed stirring and mixing device according to claim 5, characterized in that: A through slot (6) is formed on the first scraper (34); a magnet (61) is fixedly connected to the middle of the through slot (6); a plurality of sets of hinged frames (62) are fixedly connected to the middle of the outer wall of the device body (1); a fifth connecting rod (63) is rotatably connected to the middle of the hinged frame (62); and an iron ball (64) is fixedly connected to the end of the fifth connecting rod (63).

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