CN113562211A

CN113562211A - Powder pesticide packagine machine

Info

Publication number: CN113562211A
Application number: CN202110982121.0A
Authority: CN
Inventors: 陈金如; 钱同兰; 方向明; 范泽求; 范进林
Original assignee: Anhui Shengdan Biochemical Co ltd
Current assignee: Anhui Shengdan Biochemical Co ltd
Priority date: 2021-08-25
Filing date: 2021-08-25
Publication date: 2021-10-29
Anticipated expiration: 2041-08-25
Also published as: CN113562211B

Abstract

The invention discloses a powder pesticide packaging machine which comprises a storage bin, a driving mechanism, a filling mechanism, a sealing device, a conveying frame, packaging bags and a material guide pipe, wherein the storage bin is arranged on the conveying frame; the bin is connected with the filling mechanism through a material guide pipe, a conveying frame used for conveying packaging bags is arranged below the filling mechanism, a sealing device used for plastic packaging of the packaging bags is arranged on one side of the filling mechanism, and a driving mechanism is arranged above the filling mechanism and the sealing device; the outer wall of the discharge pipe is sleeved with a discharge sleeve and is in sliding connection with the discharge sleeve, the inner cavity of the discharge sleeve is provided with a plugging block, the bottom of the discharge pipe is provided with an opening, the top of the plugging block extends into the inner cavity of the discharge pipe, and the bottom of the plugging block is installed on the inner wall of the discharge sleeve through a connecting shaft; the top of the plugging block is connected with the output end of the driving mechanism; according to the invention, the filling mechanism and the sealing device are matched with each other, so that the working efficiency of packaging the powder pesticide is greatly improved.

Description

Powder pesticide packagine machine

Technical Field

The invention belongs to the technical field of pesticides, and particularly relates to a powder pesticide packaging machine.

Background

Chinese patent CN201367132Y discloses a strip wrapping bag vacuum forming packagine machine, strip wrapping bag vacuum forming packaging method includes steps such as reinforced, heating, material filling, exhaust seal, strip wrapping bag vacuum forming packagine machine, including frame, shaping pipe, indulge a boiling hot piece and hopper are equallyd divide and do not are connected with the frame, still include horizontal seal exhaust mechanism, horizontal seal exhaust mechanism includes horizontal seal boiling hot piece, horizontal seal splint and sponge board, horizontal seal splint fixed connection scalds a downside at horizontal seal, the fixed surface of pasting the dress at horizontal seal splint of sponge board, the utility model discloses the vacuum strip wrapping bag of packing is taken more beautifully, and the vacuum is high, and the packing fastness is high, and the machine operation is steady reliable, low in production cost.

Among the prior art, owing to receive pesticide powder self property to influence, it itself has certain toxicity, so work under this environment, can influence staff's healthy, generally adopt the staff to wear tools such as gas mask to guard against at present, and this kind also can exist and wear factors such as non-standard, also can influence staff's healthy, in addition, when packing pesticide powder, filling equipment and sealing equipment are far away from, need transport through transport mechanism, thereby realize the filling respectively, seal the work, separately work between two sets of, it can influence the work efficiency that the packing agent carries out the packing to pesticide powder.

Disclosure of Invention

The invention aims to solve the problems that in the prior art, the working efficiency of a packaging agent for packaging pesticide powder is influenced by the fact that pesticide powder has certain toxicity and the working of workers in the environment is influenced, the health of the workers is influenced due to the fact that the workers generally wear tools such as gas masks and the like for prevention at present, the health of the workers is also influenced due to the fact that the workers wear the tools such as gas masks and the like, in addition, when the pesticide powder is packaged, the distance between filling equipment and sealing equipment is far, the filling equipment and the sealing equipment need to be transported through a conveying mechanism, so that the filling and sealing work is respectively realized, the two groups work separately, and the working efficiency of the packaging agent for packaging the pesticide powder is influenced.

The purpose of the invention can be realized by the following technical scheme:

a powder pesticide packaging machine comprises a stock bin, a driving mechanism, a filling mechanism, a sealing device, a conveying frame, packaging bags and a material guide pipe;

the bin is connected with the filling mechanism through a material guide pipe, a conveying frame used for conveying packaging bags is arranged below the filling mechanism, a sealing device used for plastic packaging of the packaging bags is arranged on one side of the filling mechanism, and a driving mechanism is arranged above the filling mechanism and the sealing device;

the filling mechanism comprises a discharge pipe, a discharge sleeve, a plugging block and a connecting shaft, wherein a feed inlet is formed above the side wall of the discharge pipe, the feed inlet of the discharge pipe is communicated with a discharge outlet of the guide pipe, the discharge sleeve is sleeved on the outer wall of the discharge pipe and is in sliding connection with the discharge sleeve, the plugging block is arranged in the inner cavity of the discharge sleeve, an opening is formed in the bottom of the discharge pipe, the top of the plugging block extends into the inner cavity of the discharge pipe, and the bottom of the plugging block is installed on the inner wall of the discharge sleeve through the connecting shaft; the top of the plugging block is connected with the output end of the driving mechanism;

the sealing device comprises a first moving part, a first plastic sealing plate, a second moving part, a second plastic sealing plate, a rotary control part and a base; the inner chamber of base is provided with rotary control spare, and rotary control spare is connected with first moving member and second moving member respectively, is connected with the first shrouding of moulding on the first moving member, is connected with the second on the second moving member and moulds the shrouding.

Preferably, the discharge tubes are arranged in groups side by side.

Preferably, the plugging block is of a conical structure, and a sealing gasket is arranged on the side wall of the plugging block.

Preferably, the first moving member comprises a first moving plate, a first mounting plate and first limiting sleeves, the first limiting sleeves are arranged in two groups side by side, the two groups of first limiting sleeves are mounted on the base, the first moving plate penetrates through the base and is in sliding connection with the base, the first moving plate is sleeved on the first limiting sleeves in a sliding mode, and one end of the first moving plate is connected with the first plastic sealing plate through the first mounting plate.

Preferably, the second moving member comprises a second moving plate, a second mounting plate and second limiting sleeves, the second limiting sleeves are arranged in two groups side by side, the two groups of second limiting sleeves are mounted on the base, the second moving plate penetrates through the base and is in sliding connection with the base, the second moving plate is sleeved on the second limiting sleeves in a sliding mode, and one end of the second moving plate is connected with the second plastic sealing plate through the second mounting plate.

Preferably, the rotary control part comprises a rotating shaft, a rotating plate, a connecting block, a pin shaft and a sliding groove, the rotating shaft is rotatably installed in an inner cavity of the base, the rotating plate is sleeved on the rotating shaft, the sliding grooves are respectively formed in two sides of the rotating plate, the pin shaft is located in the sliding grooves, the pin shaft is correspondingly installed on the first moving plate and the second moving plate through the connecting block, and the top of the rotating plate is connected with the output end of the driving mechanism.

Preferably, actuating mechanism includes the cylinder, the connecting plate, connecting rod, the output of cylinder is connected with the top surface of connecting plate, be provided with multiunit connecting rod on the bottom surface of connecting plate, in the connecting rod bottom of one side multiunit extended to the discharge tube, and with discharge tube sliding connection, the connecting rod bottom of one side multiunit was connected with the jam piece, the inner chamber of base was extended to the connecting rod bottom of a set of opposite side, and with base sliding connection, the bottom of a set of connecting rod of opposite side and the top swing joint of rotor plate.

Compared with the prior art, the invention has the beneficial effects that:

according to the filling mechanism, the driving mechanism controls the blocking block to move downwards, so that the blocking block drives the discharging sleeve to move downwards along the discharging pipe through the connecting shaft, the discharging pipe enters the packaging bag, meanwhile, when the blocking block moves downwards, a gap is reserved between the blocking block and the bottom opening of the discharging pipe, pesticide powder flows into the packaging bag from the discharging sleeve, and therefore the pesticide powder bagging work is completed; the lifting of the conical plugging block can control the closing work of the discharge pipe, so that the discharging work of the discharge pipe is controlled, the material blockage phenomenon in the discharge pipe cannot occur due to the conical structure, and the conical structure has a good flow guiding effect; the sealing gasket on the plugging block can improve the sealing property of the joint of the plugging block and the discharge pipe;

the sealing device has the advantages of simple structure and high plastic packaging efficiency, and the rectangular first plastic sealing plate and the rectangular second plastic sealing plate can simultaneously carry out plastic packaging work on a plurality of packaging bags;

according to the driving mechanism, the connecting plates are driven to move downwards by the control cylinder, the plurality of groups of connecting supporting rods simultaneously move downwards to drive the blocking blocks to move downwards, so that the filling mechanism works to fill the packaging bags, and meanwhile, the rotating plates are also driven to rotate to enable the sealing device to work to seal the packaging bags.

Drawings

In order to facilitate understanding for those skilled in the art, the present invention will be further described with reference to the accompanying drawings.

FIG. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic structural diagram of a filling mechanism in the invention.

Fig. 3 is a schematic structural view of the sealing device of the present invention.

FIG. 4 is a schematic view of the inner cavity of the base of the present invention.

FIG. 5 is a schematic structural diagram of a connection relationship between a first moving part and a second moving part according to the present invention.

In the figure: 1. a storage bin; 2. a drive mechanism; 3. a filling mechanism; 4. a sealing device; 5. a transfer frame; 6. packaging bags; 7. a cylinder; 8. a connecting plate; 9. connecting a support rod; 10. a discharge pipe; 11. a discharge sleeve; 12. a plugging block; 13. a connecting shaft; 14. a material guide pipe; 15. a first moving plate; 16. a first mounting plate; 17. a first plastic sealing plate; 18. a second moving plate; 19. a second mounting plate; 20. a second plastic sealing plate; 21. a first stop collar; 22. a second stop collar; 23. a rotating shaft; 24. a rotating plate; 25. connecting blocks; 26. a pin shaft; 27. a chute; 28. a base.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-5, a powder pesticide packing machine includes a storage bin 1, a driving mechanism 2, a filling mechanism 3, a sealing device 4, a conveying frame 5, a packing bag 6, and a material guiding pipe 14;

the storage bin 1 is connected with the filling mechanism 3 through the material guide pipe 14, the material guide pipe 14 is obliquely arranged, the oblique material guide pipe 14 can enable pesticide powder in the storage bin 1 to automatically flow into the filling mechanism 3 for material supplement, the conveying frame 5 used for conveying the packaging bags 6 is arranged below the filling mechanism 3, the packaging bags 6 can be moved and transported along the conveying frame 5, the sealing device 4 used for plastically packaging the packaging bags 6 is arranged on one side of the filling mechanism 3, and the driving mechanism 2 is arranged above the filling mechanism 3 and the sealing device 4; the invention automatically supplies materials to the packaging bag 6 through the conveying frame 5, transports the packaging bag 6 to the lower part of the filling mechanism 3, fills the pesticide powder into the packaging bag 6 through the filling mechanism 3, after filling, transports the packaging bag 6 to the lower part of the sealing device 4 along the conveying frame 5, seals the packaging bag 6 filled with the pesticide powder through the sealing device 4, thereby completing the packaging work of the pesticide powder, realizes the automatic packaging of the pesticide powder through the driving mechanism 2, the filling mechanism 3 and the sealing device 4, does not need manual auxiliary operation, greatly improves the efficiency of powder pesticide packaging, solves the problems that the prior art works under the environment because the pesticide powder has certain toxicity due to the self property of the pesticide powder, the health of workers can be influenced, and the prior art generally adopts tools such as gas masks and the like to wear for precaution by the workers, the problem that the health of workers is affected due to the fact that the wearing is not standard and other factors can exist;

the filling mechanism 3 comprises a plurality of groups of discharge pipes 10, a plurality of groups of discharge sleeves 11, a blocking block 12 and a connecting shaft 13, the discharge pipes 10 are arranged side by side, and the plurality of groups of discharge pipes 10 are arranged, so that a plurality of packaging bags 6 can be filled at the same time, and the efficiency of powder pesticide packaging is improved; a feeding hole is formed in the upper portion of the side wall of the discharging pipe 10, the feeding hole of the discharging pipe 10 is communicated with a discharging hole of the material guide pipe 14, a discharging sleeve 11 is sleeved on the outer wall of the discharging pipe 10 and is in sliding connection with the discharging sleeve 11, a blocking block 12 is arranged in the inner cavity of the discharging sleeve 11, an opening is formed in the bottom of the discharging pipe 10, the top of the blocking block 12 extends into the inner cavity of the discharging pipe 10, the bottom of the blocking block 12 is installed on the inner wall of the discharging sleeve 11 through a connecting shaft 13, the blocking block 12 is of a conical structure, and a sealing gasket is arranged on the side wall of the blocking block 12; the top of the plugging block 12 is connected with the output end of the driving mechanism 2; the driving mechanism 2 is used for controlling the blocking block 12 to move downwards, so that the blocking block 12 drives the discharging sleeve 11 to move downwards along the discharging pipe 10 through the connecting shaft 13, the discharging pipe 10 enters the packaging bag 6, meanwhile, when the blocking block 12 moves downwards, a gap is reserved between the blocking block 12 and the opening at the bottom of the discharging pipe 10, pesticide powder flows into the packaging bag 6 from the discharging sleeve 11, and therefore the pesticide powder bagging work is completed, the filling mechanism 3 has automatic work, and when in filling, the discharging sleeve 11 extends into the packaging bag 6, so that the phenomenon of material leakage during filling cannot occur; the lifting of the conical plugging block 12 can control the closing work of the discharge pipe 10, so that the discharging work of the discharge pipe 10 is controlled, the material blockage phenomenon in the discharge pipe 10 cannot occur due to the conical structure, and the flow guiding effect is good; the sealing gasket on the plugging block 12 can improve the sealing property of the joint of the plugging block 12 and the discharge pipe 10;

the sealing device 4 comprises a first moving part, a first plastic sealing plate 17, a second moving part, a second plastic sealing plate 20, a rotary control part and a base 28; a rotary control piece is arranged in an inner cavity of the base 28 and is respectively connected with the first moving piece and the second moving piece, the first moving piece is positioned right above the second moving piece, the first moving piece is connected with a first plastic sealing plate 17, the second moving piece is connected with a second plastic sealing plate 20, and the first plastic sealing plate 17 and the second plastic sealing plate 20 are positioned on the same plane and are arranged oppositely; the rotary control piece controls the first moving piece and the first moving piece to move, the first plastic sealing plate 17 and the second plastic sealing plate 20 are driven to move towards the direction of the packaging bag 6, and then the packaging bag 6 is sealed through the first plastic sealing plate 17 and the second plastic sealing plate 20; the sealing device 4 has the advantages of simple structure and high plastic packaging efficiency, and the rectangular first plastic sealing plate 17 and the rectangular second plastic sealing plate 20 can simultaneously carry out plastic packaging work on a plurality of packaging bags 6, and in addition, the packaging bags 6 after being filled can be directly sealed by arranging the packaging devices and the filling mechanism 3 on the same conveying frame 5, so that the efficiency of integrally packaging powder pesticides is improved;

the first moving piece comprises a first moving plate 15, a first mounting plate 16 and first limiting sleeves 21, two groups of the first limiting sleeves 21 are arranged side by side, the two groups of the first limiting sleeves 21 are mounted on a base 28, the first moving plate 15 penetrates through the base 28 and is in sliding connection with the base 28, the first moving plate 15 is sleeved on the first limiting sleeves 21 in a sliding mode, and one end of the first moving plate 15 is connected with a first plastic sealing plate 17 through the first mounting plate 16; the first moving plate 15 horizontally moves along the base 28 through the first stop collar 21;

the second moving part comprises a second moving plate 18, a second mounting plate 19 and second limiting sleeves 22, the second limiting sleeves 22 are arranged in two groups side by side, the two groups of second limiting sleeves 22 are mounted on a base 28, the second moving plate 18 penetrates through the base 28 and is in sliding connection with the base 28, the second moving plate 18 is sleeved on the second limiting sleeves 22 in a sliding mode, and one end of the second moving plate 18 is connected with a second plastic sealing plate 20 through the second mounting plate 19; the second moving plate 18 horizontally moves along the base 28 through the second stop collar 22;

the rotary control part comprises a rotating shaft 23, a rotating plate 24, a connecting block 25, a pin shaft 26 and a sliding groove 27, the rotating shaft 23 is rotatably installed in an inner cavity of a base 28, the rotating plate 24 is sleeved on the rotating shaft 23, the sliding grooves 27 are respectively arranged on two sides of the rotating plate 24, the pin shaft 26 is located in the sliding groove 27, the pin shaft 26 is correspondingly installed on the first moving plate 15 and the second moving plate 18 through the connecting block 25, and the top of the rotating plate 24 is connected with the output end of the driving mechanism 2; the driving mechanism 2 drives the rotating plate 24 to rotate along the base 28, so that the sliding groove 27 in the rotating plate 24 also rotates, then the pin shaft 26 drives the first moving plate 15 and the second moving plate 18 to move toward or away from each other, and when the first moving plate 15 and the second moving plate 18 move toward each other, the first plastic sealing plate 17 and the second plastic sealing plate 20 are driven to move toward each other, so as to seal the packaging bag 6;

the driving mechanism 2 comprises an air cylinder 7, a connecting plate 8 and connecting supporting rods 9, the output end of the air cylinder 7 is connected with the top surface of the connecting plate 8, a plurality of groups of connecting supporting rods 9 are arranged on the bottom surface of the connecting plate 8, the bottom ends of the groups of connecting supporting rods 9 on one side extend into the discharging pipe 10 and are in sliding connection with the discharging pipe 10, the bottom ends of the groups of connecting supporting rods 9 on one side are connected with the blocking block 12, the bottom ends of the groups of connecting supporting rods 9 on the other side extend into the inner cavity of the base 28 and are in sliding connection with the base 28, and the bottom ends of the groups of connecting supporting rods 9 on the other side are movably connected with the top end of the rotating plate 24; drive connecting plate 8 downstream through control cylinder 7, make multiunit connecting branch 9 downstream simultaneously, drive stifled chock 12 downstream, make filling mechanism 3 work, carry out filling work to wrapping bag 6, and simultaneously, also drive rotor plate 24 rotates, make sealing device 4 work, seal work to wrapping bag 6, so, actuating mechanism 2 not only can make and carry out filling work to wrapping bag 6, and simultaneously, also will seal work to wrapping bag 6, mutually support between filling mechanism 3 and the sealing device 4 work, the work efficiency of packing powder pesticide has been improved greatly.

The working principle of the invention is as follows: the connecting plates 8 are driven to move downwards by the control cylinder 7, so that the plurality of groups of connecting support rods 9 simultaneously move downwards, the plugging blocks 12 are driven to move downwards, the filling mechanism 3 works, and the packaging bags 6 are filled; specifically, the blocking block 12 moves downwards, so that the blocking block 12 drives the discharge sleeve 11 to move downwards along the discharge pipe 10 through the connecting shaft 13, the discharge pipe 10 enters the packaging bag 6, and meanwhile, when the blocking block 12 moves downwards, a gap is reserved between the blocking block and the bottom opening of the discharge pipe 10, so that pesticide powder flows into the packaging bag 6 from the discharge sleeve 11, and the pesticide powder bagging work is completed;

meanwhile, the connecting rod 9 also drives the rotating plate 24 to rotate, so that the sealing device 4 works, specifically, the rotating plate 24 rotates along the base 28, so that the chute 27 in the rotating plate 24 also rotates, and then the first moving plate 15 and the second moving plate 18 are driven by the pin shaft 26 to move toward or away from each other, when the first moving plate 15 and the second moving plate 18 move toward each other, the first plastic sealing plate 17 and the second plastic sealing plate 20 are driven to move toward each other, so as to seal the packaging bag 6.

The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise forms disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A powder pesticide packagine machine which characterized in that: comprises a storage bin (1), a driving mechanism (2), a filling mechanism (3), a sealing device (4), a conveying frame (5), a packaging bag (6) and a material guide pipe (14);

the storage bin (1) is connected with the filling mechanism (3) through a material guide pipe (14), a conveying frame (5) used for conveying a packaging bag (6) is arranged below the filling mechanism (3), a sealing device (4) used for plastically packaging the packaging bag (6) is arranged on one side of the filling mechanism (3), and a driving mechanism (2) is arranged above the filling mechanism (3) and the sealing device (4);

the filling mechanism (3) comprises a discharge pipe (10), a discharge sleeve (11), a plugging block (12) and a connecting shaft (13), wherein a feed inlet is formed above the side wall of the discharge pipe (10), the feed inlet of the discharge pipe (10) is communicated with a discharge outlet of a material guide pipe (14), the outer wall of the discharge pipe (10) is sleeved with the discharge sleeve (11) and is in sliding connection with the discharge sleeve (11), the plugging block (12) is arranged in the inner cavity of the discharge sleeve (11), an opening is formed in the bottom of the discharge pipe (10), the top of the plugging block (12) extends into the inner cavity of the discharge pipe (10), and the bottom of the plugging block (12) is installed on the inner wall of the discharge sleeve (11) through the connecting shaft (13); the top of the plugging block (12) is connected with the output end of the driving mechanism (2);

the sealing device (4) comprises a first moving part, a first plastic sealing plate (17), a second moving part, a second plastic sealing plate (20), a rotary control part and a base (28); the inner cavity of base (28) is provided with rotary control spare, and rotary control spare is connected with first moving member and second moving member respectively, is connected with first plastic sealing board (17) on the first moving member, is connected with second plastic sealing board (20) on the second moving member.

2. A powdered pesticide packing machine as claimed in claim 1 wherein the discharge tubes (10) are arranged in groups side by side.

3. A powder pesticide packing machine as claimed in claim 1, wherein the blocking block (12) is of a conical structure, and a sealing gasket is arranged on the side wall of the blocking block (12).

4. A powder pesticide packing machine as claimed in claim 1, wherein the first moving member comprises a first moving plate (15), a first mounting plate (16) and first position limiting sleeves (21), two groups of the first position limiting sleeves (21) are arranged side by side, two groups of the first position limiting sleeves (21) are arranged on the base (28), the first moving plate (15) penetrates through the base (28) and is connected with the base (28) in a sliding manner, the first moving plate (15) is sleeved on the first position limiting sleeves (21) in a sliding manner, and one end of the first moving plate (15) is connected with the first plastic sealing plate (17) through the first mounting plate (16).

5. A powder pesticide packing machine as claimed in claim 4, wherein the second moving member comprises a second moving plate (18), a second mounting plate (19) and second position limiting sleeves (22), two groups of the second position limiting sleeves (22) are arranged side by side, two groups of the second position limiting sleeves (22) are mounted on the base (28), the second moving plate (18) penetrates through the base (28) and is connected with the base (28) in a sliding manner, the second moving plate (18) is sleeved on the second position limiting sleeves (22) in a sliding manner, and one end of the second moving plate (18) is connected with the second plastic sealing plate (20) through the second mounting plate (19).

6. The powder pesticide packaging machine as claimed in claim 5, wherein the rotary control member comprises a rotating shaft (23), a rotating plate (24), a connecting block (25), a pin shaft (26) and a sliding groove (27), the rotating shaft (23) is rotatably mounted in the inner cavity of the base (28), the rotating plate (24) is sleeved on the rotating shaft (23), the sliding grooves (27) are respectively formed in two sides of the rotating plate (24), the pin shaft (26) is located in the sliding groove (27), the pin shaft (26) is correspondingly mounted on the first moving plate (15) and the second moving plate (18) through the connecting block (25), and the top of the rotating plate (24) is connected with the output end of the driving mechanism (2).

7. A powder pesticide packing machine as claimed in claim 1, wherein the driving mechanism (2) comprises a cylinder (7), a connecting plate (8) and connecting struts (9), the output end of the cylinder (7) is connected with the top surface of the connecting plate (8), a plurality of groups of connecting struts (9) are arranged on the bottom surface of the connecting plate (8), the bottom ends of the connecting struts (9) on one side extend into the discharge pipe (10) and are slidably connected with the discharge pipe (10), the bottom ends of the connecting struts (9) on one side are connected with the plugging block (12), the bottom ends of the connecting struts (9) on the other side extend into the inner cavity of the base (28) and are slidably connected with the base (28), and the bottom ends of the connecting struts (9) on the other side are movably connected with the top end of the rotating plate (24).