CN215122517U - Green house with waterproof eaves - Google Patents

Abstract

The utility model discloses an agricultural greenhouse with waterproof eave, which comprises two base plates, wherein the two base plates are arranged in the front and back direction, the top parts of the two base plates are both provided with a clamping groove, the bottoms of the inner cavities of the two clamping grooves are both fixedly connected with a guide rail, the top parts of the two clamping grooves near the left side are both fixedly connected with a first vertical rod, the top parts of the two first vertical rods are both provided with a first U-shaped rod, through the mutual matching among the mechanisms such as the base plate, the first vertical rod, the second vertical rod, the first roller, the second roller, the box body, the motor, the movable rod and the like, can realize carrying out automatic switching to the big-arch shelter, make things convenient for the better photosynthesis of plant, through mutually supporting between mechanisms such as first U-shaped pole, second U-shaped pole, third U-shaped pole, first horizontal pole, second horizontal pole, can realize reducing the rainwater and to the impact of big-arch shelter for the rainwater falls down sooner.

Description

Green house with waterproof eaves

Technical Field

The utility model relates to an agricultural greenhouse technical field specifically is an agricultural greenhouse with waterproof eaves.

Background

The greenhouse is a necessity of agriculture along with the development of agriculture, can conveniently provide a proper vegetable growth environment, prolongs the vegetable planting time, facilitates the out-of-season planting of vegetables, is widely applied in the existing agricultural planting, is covered by a movable rolling curtain, is convenient to control the ventilation of the greenhouse and facilitates the photosynthesis of plants, is usually pulled open in the morning and put down in the evening during the use of the existing vegetable greenhouse, is time-consuming and labor-consuming in manual operation, is inconvenient to operate, easily delays the illumination in the greenhouse, and leaves left after rainwater on the greenhouse are difficult to remove.

Disclosure of Invention

The utility model provides a technical problem lie in overcoming the artifical switch that makes a round trip of needs of prior art, the earth and the blade of canopy top are difficult to the defect of clearance, provide an agricultural greenhouse with waterproof eaves. The agricultural greenhouse with the waterproof eaves has the advantages of being capable of being automatically opened and closed, and facilitating cleaning of soil and blades on the roof and the like.

In order to achieve the above object, the utility model provides a following technical scheme: an agricultural greenhouse with waterproof eaves comprises two base plates, wherein the two base plates are arranged in a front-back mode, clamping grooves are formed in the tops of the two base plates, guide rails are fixedly connected to the bottoms of inner cavities of the two clamping grooves, first vertical rods are fixedly connected to the positions, close to the left sides, of the tops of the two clamping grooves, first U-shaped rods are jointly arranged at the tops of the two first vertical rods, a plurality of second U-shaped rods are arranged on the right sides of the first U-shaped rods, second inclined rods are arranged on the front sides, close to the bottom ends, of the plurality of second U-shaped rods, first inclined rods are arranged on the front sides, close to the top ends, of the plurality of first inclined rods, first plug shafts are arranged on the front sides of the plurality of first inclined rods, the rear ends of the plurality of first plug shafts penetrate through the adjacent first inclined rods and the adjacent second inclined rods, the front sides of the adjacent second U-shaped rods are connected, the positions, close to the bottom ends, of the tops of the two guide rails are provided with a plurality of first idler wheels, the front sides of the first rollers are provided with vertical plates, the center of the front sides of the first rollers is fixedly connected with a first connecting rod, the front ends of the first connecting rods penetrate through the rear sides of adjacent vertical plates and are close to the bottom, the rear sides of the vertical plates are fixedly connected with movable rods close to the top, the front sides of the movable rods are provided with rectangular holes close to the top, the front sides of the rectangular holes are provided with second connecting shafts, the rear ends of the second connecting shafts penetrate through adjacent rectangular hole inner cavities, the front ends of the second connecting shafts penetrate through the rear sides of adjacent second inclined rods and are close to the bottom, the rear ends of the second connecting shafts penetrate through the front sides of the adjacent first inclined rods and are close to the bottom, the front sides of the left two first inclined rods are provided with third connecting shafts, the rear ends of the two third connecting shafts penetrate through the front sides of the adjacent first inclined rods and are close to the top, and the plug connects the front side of adjacent first montant and is close to center department, is located two on the right side the front side of second down tube is close to top department and all has the fourth axle of linking, two the rear end of fourth axle of linking all has the second montant, two the fourth axle rear end of linking all runs through the front side of adjacent second down tube and is close to top department to all peg graft and be close to center department in the front side of second montant, two the common fixedly connected with third U-shaped pole in top of second montant.

Preferably, the bottom end of the second vertical rod is fixedly connected with a box body, the bottom of the inner cavity of the box body is fixedly connected with a motor, the front side of the box body is fixedly connected with a box body, the power output shaft of the motor is forward in direction, the power output shaft of the motor penetrates through the center of the front side of the inner cavity of the box body, the power output shaft of the motor penetrates through the rear side of the box body to be close to the top and extends to the inner cavity of the box body, the outer edge of the power output shaft of the motor is sleeved with a first worm wheel close to the front end and is fixedly connected with the first worm wheel, the bottom of the first worm wheel is provided with a second worm wheel, the right sides of the first worm wheel and the second worm wheel are provided with worms together, the first worm wheel and the second worm wheel are meshed with the worms, the center of the rear side of the second worm wheel is fixedly connected with a second connecting rod, and the rear end of the second connecting rod penetrates through the rear side of the inner cavity of the box body to be close to the bottom, and the bottom of the second roller is mutually attached to the bottom of the inner cavity of the guide rail.

Preferably, two the top of bed plate is close to the left and right sides and all has the screw, four the screw bottom all runs through the top of adjacent bed plate.

Preferably, the center of the top of the inner cavity of the first U-shaped rod is fixedly connected with a first connecting rod, the center of the top of the inner cavity of the second U-shaped rod is fixedly connected with a second connecting rod, the center of the top of the inner cavity of the third U-shaped rod is fixedly connected with a third connecting rod, the bottom of the second connecting rod is provided with a second cross rod in a penetrating manner and is spliced with the first cross rod, the first cross rod and the second cross rod are provided with a fifth connecting shaft, the bottom of the fifth connecting shaft penetrates through the top of the second cross rod and is close to the left end and the top of the first cross rod and is close to the right end, the bottom of the first connecting rod penetrates through the top of the first cross rod on the left side and is close to the left side, and the bottom of the third connecting rod penetrates through the top of the second cross rod on the right side and is close to the right side.

Preferably, two the base plate is kept away from the equal fixedly connected with diaphragm in first U-shaped pole one side, two the draw-in groove has all been seted up at the top of diaphragm, two the top of draw-in groove is close to left side department and all is equipped with the slider, two the equal fixedly connected with third montant in top of slider, two the third montant is close to common fixedly connected with third horizontal pole between the top department, a plurality of brushes of fixedly connected with in bottom of third horizontal pole, two the left side of third montant is close to the equal fixedly connected with handle in bottom department.

Preferably, a fourth cross rod is arranged between the two second vertical rods, the front end of the fourth cross rod is inserted in the position, close to the top, of the rear side of the second vertical rod located on the front side, the rear end of the fourth cross rod penetrates through the position, close to the top, of the front side of the second vertical rod located on the rear side, the rear end of the fourth cross rod is fixedly connected with a first grooved wheel, a second grooved wheel is arranged at the bottom of the first grooved wheel, a belt is arranged between the first grooved wheel and the second grooved wheel, the first grooved wheel is connected with the second grooved wheel through the belt in a transmission mode, a transmission rod penetrates through the center of the rear side of the second grooved wheel, the front end of the transmission rod is inserted in the center of the rear side of the second vertical rod located on the rear side, and the rear end of the transmission rod is fixedly connected with a turntable.

Compared with the prior art, the beneficial effects of the utility model are that:

1. according to the agricultural greenhouse with the waterproof eaves, the automatic opening and closing of the greenhouse can be realized through the mutual matching of mechanisms such as the base plate, the first vertical rod, the second vertical rod, the first idler wheel, the second idler wheel, the box body, the motor and the movable rod, the better photosynthesis of plants is facilitated, and the impact of rainwater on the greenhouse can be reduced through the mutual matching of the mechanisms such as the first U-shaped rod, the second U-shaped rod, the third U-shaped rod, the first transverse rod and the second transverse rod, so that the rainwater can fall down more quickly;

2. the utility model provides an agricultural greenhouse with waterproof eaves, through the diaphragm, the third montant, the third horizontal pole, the brush, the fixture block, mutually support between the mechanisms such as handle, can realize the cleaning action to the leaf at big-arch shelter top and earth, through the third montant, the fourth horizontal pole, first sheave, the second sheave, the belt, the transfer line, mutually support between the mechanisms such as carousel, can realize raising and falling down to the big-arch shelter membrane of importing and exporting before the door, convenient ventilation effect at ordinary times, need not the reuse hook and hang, drop easily.

Drawings

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

Fig. 2 is a right side view of the present invention.

Fig. 3 is an enlarged view of a.

Reference numbers in the figures: 1. a base plate; 2. a first vertical bar; 3. a first roller; 4. a first link; 5. a vertical plate; 6. a movable rod; 7. a first U-shaped bar; 8. a first diagonal member; 9. a second diagonal member; 10. a second U-shaped bar; 11. a first cross bar; 12. a second cross bar; 13. a second vertical bar; 14. a box body; 15. a motor; 16. a box body; 17. a second roller; 18. a screw; 19. a third U-shaped bar; 20. a transverse plate; 21. a third vertical bar; 22. a third cross bar; 23. a brush; 24. a fourth cross bar; 25. a first sheave; 26. a belt; 27. a second sheave; 28. a transmission rod; 29. a turntable; 30. a first worm gear; 31. a worm; 32. a second worm gear; 33. a second link; 34. a handle; 35. a first connecting rod; 36. a second connecting rod; 37. and a third connecting rod.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: an agricultural greenhouse with waterproof eaves comprises two base plates 1, wherein the two base plates 1 are arranged in a front-back manner, clamping grooves are formed in the tops of the two base plates 1, guide rails are fixedly connected to the bottoms of inner cavities of the two clamping grooves, first vertical rods 2 are fixedly connected to the positions, close to the left sides, of the tops of the two clamping grooves, first U-shaped rods 7 are jointly arranged on the tops of the two first vertical rods 2, a plurality of second U-shaped rods 10 are arranged on the right sides of the first U-shaped rods 7, second inclined rods 9 are arranged on the front sides, close to the bottom ends, of the plurality of second U-shaped rods 10, first inclined rods 8 are arranged on the front sides of the plurality of second inclined rods 9, first connecting shafts are arranged on the front sides of the plurality of first inclined rods 8, the rear ends of the plurality of first connecting shafts penetrate through the adjacent first inclined rods 8 and the adjacent second inclined rods 9, and are inserted into the positions, close to the bottom ends, of the front sides of the adjacent second U-shaped rods 10, a plurality of the tops of the guide rails are provided with a plurality of first idler wheels 3, the front sides of the first rollers 3 are all provided with vertical plates 5, the centers of the front sides of the first rollers 3 are fixedly connected with first connecting rods 4, the front ends of the first connecting rods 4 penetrate through the rear sides of the adjacent vertical plates 5 and are close to the bottom, the rear sides of the vertical plates 5 are fixedly connected with movable rods 6 close to the top, the front sides of the movable rods 6 are all provided with rectangular holes close to the top, the front sides of the rectangular holes are all provided with second connecting shafts close to the top, the rear ends of the second connecting shafts penetrate through the inner cavities of the adjacent rectangular holes, the front ends of the second connecting shafts penetrate through the rear sides of the adjacent second inclined rods 9 and are close to the bottom, the rear ends of the second connecting shafts penetrate through the front sides of the adjacent first inclined rods 8 and are close to the bottom, the front sides of the two left first inclined rods 8 are both provided with third connecting shafts, and the rear ends of the two third connecting shafts penetrate through the front sides of the adjacent first inclined rods 8 and are close to the top, the front side of each adjacent first vertical rod 2 is close to the center, the front sides of two second inclined rods 9 positioned on the right side are close to the top ends and are respectively provided with a fourth connecting shaft, the rear ends of the two fourth connecting shafts are respectively provided with a second vertical rod 13, the rear ends of the two fourth connecting shafts are respectively penetrated through the front sides of the adjacent second inclined rods 9 and are respectively inserted into the front sides of the second vertical rods 13 and are close to the center, the top ends of the two second vertical rods 13 are jointly and fixedly connected with a third U-shaped rod 19, the bottom end of each second vertical rod 13 is fixedly connected with a box body 14, the bottom of an inner cavity of the box body 14 is fixedly connected with a motor 15, the front side of the box body 14 is fixedly connected with a box body 16, the power output shaft of the motor 15 is forwardly directed, the power output shaft of the motor 15 penetrates through the center of the front side of the inner cavity of the box body 14, the power output shaft of the motor 15 penetrates through the rear side of the box body 16 and is extended to the inner cavity of the box body 16, the outer edge of the power output shaft of the motor 15 is sleeved with a first worm wheel 30 close to the front end, the bottom of the first worm wheel 30 is provided with a second worm wheel 32, the right sides of the first worm wheel 30 and the second worm wheel 32 are provided with a worm 31 together, the first worm wheel 30 and the second worm wheel 32 are both arranged in a mutually meshed manner with the worm 31, the center of the rear side of the second worm wheel 32 is fixedly connected with a second connecting rod 33, the rear end of the second connecting rod 33 penetrates through the rear side of the inner cavity of the box body 16 and is close to the bottom, and is inserted with a second roller 17, the bottom of the second roller 17 and the bottom of the inner cavity of the guide rail are arranged in a mutually attached manner, the top of each of the two base plates 1 is provided with screws 18 close to the left and right sides, the bottom ends of the four screws 18 penetrate through the tops of the adjacent base plates 1, the center of the top of the inner cavity of the first U-shaped rod 7 is fixedly connected with a first connecting rod 35, the centers of the tops of the inner cavities of the plurality of the second U-shaped rods 10 are fixedly connected with second connecting rods 36, and the center of the top of the inner cavity of the third U-shaped rod 19 is fixedly connected with a third connecting rod 37, the bottom ends of the second connecting rods 36 are all provided with second cross rods 12 in a penetrating manner and are all inserted with first cross rods 11, one ends of the first cross rods 11 and the second cross rods 12 far away from the adjacent second connecting rods 36 are all provided with fifth connecting shafts together, the bottom ends of the fifth connecting shafts penetrate through the tops of the second cross rods 12 close to the left end and the tops of the first cross rods 11 close to the right end, the bottom ends of the first connecting rods 35 penetrate through the tops of the first cross rods 11 on the left side close to the left side, the bottom ends of the third connecting rods 37 penetrate through the tops of the second cross rods 12 on the right side close to the right side, transverse plates 20 are fixedly connected to one sides of the two base plates 1 far away from the first U-shaped rods 7, clamping grooves are formed in the tops of the two transverse plates 20, sliding blocks are arranged on the tops of the two clamping grooves close to the left side, third vertical rods 21 are fixedly connected to the tops, and third cross rods 22 are fixedly connected between the two third vertical rods 21 close to the tops together, the bottom of the third cross bar 22 is fixedly connected with a plurality of brushes 23, the left sides of the two third vertical bars 21 close to the bottom are fixedly connected with handles 34, a fourth cross bar 24 is arranged between the two second vertical bars 13, the front end of the fourth cross bar 24 is inserted into the rear side of the second vertical bar 13 positioned at the front side and close to the top, the rear end of the fourth cross bar 24 penetrates through the front side of the second vertical bar 13 positioned at the rear side and close to the top, and is fixedly connected with a first grooved pulley 25, a second grooved pulley 27 is arranged at the bottom of the first grooved pulley 25, a belt 26 is arranged between the first grooved pulley 25 and the second grooved pulley 27, the first grooved pulley 25 is in transmission connection with the second grooved pulley 27 through the belt 26, a transmission rod 28 is arranged at the center of the rear side of the second grooved pulley 27, the front end of the transmission rod 28 is inserted into the center of the rear side of the second vertical bar 13 positioned at the rear side, and the rear end of the transmission rod 28 is fixedly connected with a turntable 29.

The working principle is as follows: the utility model firstly fixes two base plates 1 on the ground through four screws 18, then by starting the motor 15, the motor 15 drives the first worm wheel 30 to rotate, the first worm wheel 30 rotates through driving the worm 31, the worm 31 drives the second worm wheel 32 to rotate, the second worm wheel 32 drives the second connecting rod 33 to rotate, the second connecting rod 33 drives the second roller 17 to rotate, the second roller 17 drives the box body 16 to move rightwards, the box body 16 drives the box body 14 to move rightwards, the box body 14 drives the second vertical rod 13 to move rightwards, the second vertical rod 13 drives the third U-shaped rod 19 to move forwards, the third U-shaped rod 19 drives a plurality of second U-shaped rods 10 to move rightwards through the action of a plurality of first transverse rods 11 and second transverse rods 12, when the adjacent first transverse rods 11 and second transverse rods 12 are in complete horizontal, the second U-shaped rods 10 will stop moving, and when the second vertical rods 13 move rightwards, the movable rods 6 are driven to move rightwards under the action of the first inclined rods 8 and the second inclined rods 9, the movable rods 6 are provided with rectangular grooves, when the movable rods 6 move rightwards, the first connecting shafts in the rectangular grooves rise to the highest positions and stop moving, meanwhile, the first rollers 3 below the movable rods 6 are clamped with the guide rails of the base plate 1, friction can be reduced, the movable rods 6 are prevented from being pulled upwards, when the second vertical rods 13 move to proper positions, the motor 15 is turned off, the rotary disc 29 is rotated, the rotary disc 29 drives the transmission rod 28 to rotate, the transmission rod 28 drives the second grooved wheel 27 to rotate, the second grooved wheel 27 drives the first grooved wheel 25 to rotate through the belt 26, the first grooved wheel 25 drives the fourth transverse rod 24 to rotate, so that a greenhouse film fixed on the fourth transverse rod 24 can rapidly rise and fall, when the greenhouse top needs to be cleaned, the handle 34 is pulled to drive the third vertical rod 21 to move leftwards and rightwards, the third vertical rod 21 drives the third cross rod 22 to move left and right, the third cross rod 22 drives the lower brush 23 to move left and right, and residual leaves and soil dust on the top of the greenhouse are cleaned.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (6)

1. The utility model provides an agricultural greenhouse with waterproof eaves, includes two bed plates (1), its characterized in that: the two base plates (1) are arranged in a front-back mode, the tops of the two base plates (1) are respectively provided with a clamping groove, the bottoms of the inner cavities of the two clamping grooves are respectively and fixedly connected with a guide rail, the positions, close to the left side, of the tops of the two clamping grooves are respectively and fixedly connected with a first vertical rod (2), the tops of the two first vertical rods (2) are respectively and commonly provided with a first U-shaped rod (7), the right side of the first U-shaped rod (7) is provided with a plurality of second U-shaped rods (10), the positions, close to the bottom ends, of the front sides of the plurality of second U-shaped rods (10) are respectively provided with a second inclined rod (9), the positions, close to the top ends, of the front sides of the plurality of second inclined rods (9) are respectively provided with a first inclined rod (8), the front sides of the plurality of first inclined rods (8) are respectively provided with a first connecting shaft, the rear ends of the plurality of the first connecting shafts are respectively penetrate through the adjacent first inclined rods (8) and the adjacent second inclined rods (9), and are connected to the front sides of the adjacent second U-shaped rods (10) and close to the bottom ends, the top parts of the two guide rails are respectively provided with a plurality of first rollers (3), the front sides of the first rollers (3) are respectively provided with a vertical plate (5), the center of the front side of the first rollers (3) is fixedly connected with a first connecting rod (4), the front ends of the first connecting rods (4) penetrate through the rear sides of the adjacent vertical plates (5) and are close to the bottom, the rear sides of the vertical plates (5) are respectively fixedly connected with a movable rod (6) close to the top, the front sides of the movable rods (6) are respectively provided with a rectangular hole close to the top, the front sides of the rectangular holes are respectively provided with a second connecting shaft, the rear ends of the second connecting shafts penetrate through the inner cavities of the adjacent rectangular holes, the front ends of the second connecting shafts penetrate through the rear sides of the adjacent second inclined rods (9) and are close to the bottom, the rear ends of the second connecting shafts penetrate through the front sides of the adjacent first inclined rods (8) and are respectively close to the bottom, be located left two the front side of first down tube (8) is close to top department and all has the third to link the axle, two the third links the axle rear end and all runs through the front side of adjacent first down tube (8) and is close to top department, and plug in the front side of adjacent first montant (2) and be close to center department, two that are located the right side the front side of second down tube (9) is close to top department and all has the fourth to link the axle, two the rear end of fourth even axle all has second montant (13), two the fourth links the axle rear end and all runs through the front side of adjacent second down tube (9) and is close to top department to all peg graft in the front side of second montant (13) and be close to center department, two the common fixedly connected with third U-shaped pole (19) in top of second montant (13).

2. The agricultural greenhouse provided with the waterproof eave as claimed in claim 1, wherein: the bottom fixedly connected with box (14) of second montant (13), the inner chamber bottom fixedly connected with motor (15) of box (14), the front side fixedly connected with box body (16) of box (14), the power output shaft direction of motor (15) is forward, the power output shaft of motor (15) runs through the inner chamber front side center department of box (14), the power output shaft of motor (15) runs through the rear side that box body (16) is close to top department to extend to the inner chamber of box body (16), the power output shaft outside edge of motor (15) is close to front end department cover and is equipped with first worm wheel (30), and rather than fixed connection, there is second worm wheel (32) bottom first worm wheel (30), first worm wheel (30) and the right side of second worm wheel (32) are equipped with worm (31) jointly, first worm wheel (30) and second worm wheel (32) all set up for intermeshing with worm (31), the rear side center department fixedly connected with second connecting rod (33) of second worm wheel (32), the rear end of second connecting rod (33) runs through box body (16) inner chamber rear side and is close to bottom department, and the plug has second gyro wheel (17), the bottom and the guide rail inner chamber bottom of second gyro wheel (17) are for laminating setting each other.

3. The agricultural greenhouse provided with the waterproof eave as claimed in claim 1, wherein: two the top of bed plate (1) is close to the left and right sides and all has screw (18), four screw (18) bottom all runs through the top of adjacent bed plate (1).

4. The agricultural greenhouse provided with the waterproof eave as claimed in claim 1, wherein: a first connecting rod (35) is fixedly connected to the center of the top of the inner cavity of the first U-shaped rod (7), second connecting rods (36) are fixedly connected to the centers of the tops of the inner cavities of the second U-shaped rods (10), third connecting rods (37) are fixedly connected to the centers of the tops of the inner cavities of the third U-shaped rods (19), second cross rods (12) are arranged at the bottoms of the second connecting rods (36) in a penetrating mode and are all inserted with first cross rods (11), fifth connecting shafts are arranged at the ends, far away from the adjacent second connecting rods (36), of the first cross rods (11) and the second cross rods (12) together, the bottoms of the fifth connecting shafts penetrate through the top, close to the left end, of the second cross rod (12) and the top, close to the right end, of the first connecting rod (35) penetrates through the top, close to the left side, of the left first cross rod (11), the bottom end of the third connecting rod (37) penetrates through the top of the second cross rod (12) on the right side and is close to the right side.

5. The agricultural greenhouse provided with the waterproof eave as claimed in claim 1, wherein: two equal fixedly connected with diaphragm (20) in first U-shaped pole (7) one side, two are kept away from in bed plate (1) the draw-in groove has all been seted up at the top of diaphragm (20), two the top of draw-in groove is close to left side department and all is equipped with the slider, two the equal fixedly connected with third montant (21) in top of slider, two third montant (21) are close to common fixedly connected with third horizontal pole (22) between the top department, a plurality of brushes (23) of bottom fixedly connected with of third horizontal pole (22), two the left side of third montant (21) is close to equal fixedly connected with handle (34) in bottom department.

6. The agricultural greenhouse provided with the waterproof eave as claimed in claim 1, wherein: a fourth cross bar (24) is arranged between the two second vertical bars (13), the front end of the fourth cross bar (24) is inserted in the position, close to the top, of the rear side of the second vertical bar (13) positioned at the front side, the rear end of the fourth cross bar (24) penetrates through the front side of the second vertical bar (13) positioned at the rear side and is close to the top, and is fixedly connected with a first grooved wheel (25), the bottom of the first grooved wheel (25) is provided with a second grooved wheel (27), a belt (26) is arranged between the first grooved wheel (25) and the second grooved wheel (27), the first grooved wheel (25) is in transmission connection with the second grooved wheel (27) through a belt (26), a transmission rod (28) penetrates through the center of the rear side of the second grooved wheel (27), the front end of the transmission rod (28) is inserted in the center of the rear side of the second vertical rod (13) positioned on the rear side, and the rear end of the transmission rod (28) is fixedly connected with a rotary table (29).

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