A special cultivation rack for tomatoes and a cultivation method

Abstract

The present invention relates to the technical field of tomato cultivation, and discloses a tomato-specific cultivation rack and a cultivation method, comprising a universal ball joint mechanism and a threaded length adjustment mechanism. The tomato-specific cultivation rack and the cultivation method use an equally divided triangle to achieve a necessary pre-tightening effect on a longitudinal support rod in a supporting effect, thereby improving the anti-tilting ability of the longitudinal support rod. In addition, the device can tighten a horizontal pull rope, so that the horizontal pull rope can be in a straight state during operation, thereby improving the force stability of tomato seedlings.

Description

Technical Field

[0001] The invention relates to the technical field of tomato cultivation, in particular to a special tomato cultivation rack and a cultivation method. Background Art

[0002] The stems of indefinite growth tomato plants are thin and soft, and cannot support the upright growth of the plants. Traditionally, tomato cultivation mostly uses bamboo poles to build frames or hanging vines to fix the plants to achieve high yields. One traditional tomato cultivation method is to use bamboo poles (or wooden poles, thick straw, etc.) to build frames, and to make the tomato plants grow upright by tying the main stems of tomatoes to the bamboo poles inserted into the soil. Although this method can solve the problem of tomato plant lodging, it has the following shortcomings: it limits the growth height of tomato plants, thereby reducing the number of fruit ears left on a single plant, thereby limiting the potential of tomato yield; frame cultivation requires a wider bed surface, and if the plants are tall, they cannot be planted densely, resulting in low land utilization; bamboo poles have a short service life, especially the part inserted into the soil is very easy to rot, causing the tomato plants to lodging; bamboo pole frames are not beautiful and have limited load-bearing capacity.

[0003] To this end, the Chinese patent with publication number "CN105210720B" announced "a special cultivation rack for tomatoes and a cultivation method", whose main structure includes an upper column, a lower column, a cross arm, a U-shaped lock, an inclined support, a top spring, a self-tapping screw, a main pull wire, a support leg, an anchor stone, a pull wire, a basket screw, a long screw and a bayonet. The cultivation method includes land preparation, planting density, planting management and installation of the cultivation rack. The special cultivation rack for tomatoes and the cultivation method have the following beneficial effects: it is suitable for cultivating tomatoes in different cultivation environments; the tomato plants have beautiful plant shapes; the number of fruits and ears left is increased; the cultivation rack has a long service life; the cultivation rack device is light and detachable; the height and number of the cross arms can be adjusted as required to control the number of fruits and ears left or adapt to different cultivation conditions; the hedge cultivation is introduced into the tomato cultivation; the row spacing can be adjusted according to the cultivation environment.

[0004] However, when the above-mentioned tomato-specific cultivation rack is actually working, the lower column needs to be inserted below the ground and the pull wire needs to be in a straight state. Therefore, the lower column inserted into the ground will be subjected to a lateral pulling force toward one side. When the tomatoes grow with time, the pulling force received by the lower column will further increase. As the working time increases, the lower column will tilt to one side, and the pull wire will be in a relaxed state, which will seriously reduce its ability to control the tomato seedlings and cause its working stability to be relatively poor. Summary of the invention

[0005] In view of the shortcomings of the prior art, the present invention provides a special tomato cultivation rack and cultivation method, which adopts an equally divided triangle form to achieve the necessary pre-tightening effect on the longitudinal support rod in the supporting effect, thereby improving the anti-tilt ability of the longitudinal support rod. In addition, the device can tighten the horizontal pull rope, so that the horizontal pull rope can be in a straight state during operation, so as to improve the force stability of the tomato seedlings, thereby solving the above-mentioned technical problems.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a special tomato cultivation rack, comprising a longitudinal support rod for supporting effect, a curved connecting rod installed on the top of the longitudinal support rod, two pre-tightening ropes with an angle of 120 degrees and one end fixedly embedded in the outer periphery of the top of the longitudinal support rod, an insertion cone fixedly installed at the bottom end of the pre-tightening rope and below the longitudinal support rod, a horizontal pull rope installed between the two curved connecting rods, and a plurality of longitudinal climbing rods hanging below the horizontal pull rope and used for fixing tomato seedlings, and also comprising a universal ball joint mechanism, the interior of which is provided with a hemispherical shell for connecting the insertion cone to and a ball head which is fixedly connected to the bottom end of the longitudinal support rod and can be inserted into the interior of the hemispherical shell to realize a ball joint connection; and a threaded length adjustment mechanism, inside which are arranged a No. 1 externally threaded rod and a No. 2 externally threaded rod connected to the curved connecting rod and the end of the horizontal pull rope, a horizontal threaded sleeve which is threadedly connected to the No. 1 externally threaded rod and the No. 2 externally threaded rod and can change the distance between the No. 1 externally threaded rod and the No. 2 externally threaded rod when rotating, and a polygonal limiting rod which is inserted at the axis of the No. 1 externally threaded rod and the No. 2 externally threaded rod and can prevent the No. 1 externally threaded rod and the No. 2 externally threaded rod from rotating relative to each other.

[0007] Preferably, the universal ball joint mechanism includes a hemispherical shell, the bottom of the hemispherical shell is provided with a No. 1 connecting plate which is an integral structure with it and fixedly connected to the insertion cone, the interior of the hemispherical shell is provided with a spherical mounting cavity with an open top, the hemispherical shell is provided with a rotatable ball head inside the spherical mounting cavity, and the top of the ball head is provided with a No. 2 connecting plate which is an integral structure with it and fixedly installed on the bottom end of the longitudinal support rod.

[0008] Preferably, the structural radius of the spherical installation cavity matches the structural radius of the ball head, and the depth of the spherical installation cavity is greater than the structural radius of the ball head.

[0009] Preferably, the threaded length adjustment mechanism includes a horizontal threaded sleeve, a No. 1 externally threaded rod and a No. 2 externally threaded rod, one end of the horizontal threaded sleeve is provided with a No. 1 internally threaded cavity with a concave structure, the other end of the horizontal threaded sleeve is provided with a No. 2 internally threaded cavity with a concave structure, the rod body of the No. 1 externally threaded rod is installed in the interior of the No. 1 internally threaded cavity through the No. 1 threaded structure, and the rod body of the No. 2 externally threaded rod is installed in the interior of the No. 2 internally threaded cavity through the No. 2 threaded structure, the No. 1 externally threaded rod and the No. 2 externally threaded rod are provided with polygonal limiting cavities with concave structures at opposite ends, a polygonal limiting rod inserted into the polygonal limiting cavity is fixedly installed at the center of the horizontal threaded sleeve, one end of the No. 1 externally threaded rod is provided with a No. 3 connecting plate which is an integral structure with it and fixedly connected to the curved connecting rod, and one end of the No. 2 externally threaded rod is provided with a No. 4 connecting plate which is an integral structure with it and fixedly connected to the horizontal pull rope.

[0010] Preferably, the extension line of the axis line of the horizontal threaded sleeve and the extension line of the pretensioning rope intersect at the longitudinal axis of the longitudinal support rod, and the angle between each two extension lines is one hundred and twenty degrees.

[0011] Preferably, the structural shape of the polygonal limit cavity cross section is consistent with the structural shape of the polygonal limit rod cross section, both are polygonal structures, and the structural dimensions of the polygonal limit cavity cross section match the structural dimensions of the polygonal limit rod cross section.

[0012] Preferably, the No. 1 thread structure includes an internal thread structure arranged inside the No. 1 internal thread cavity and an external thread structure arranged on the No. 1 external thread rod body, and the No. 2 thread structure includes an internal thread structure arranged inside the No. 2 internal thread cavity and an external thread structure arranged on the No. 2 external thread rod body, and the spiral direction of the No. 1 thread structure is opposite to the spiral direction of the No. 2 thread structure.

[0013] Preferably, it also includes an elastic positioning mechanism, which is internally provided with a hollow disk body which is placed on the horizontal pull rope and can move axially along the horizontal pull rope, an arc-shaped resistance plate which is located inside the hollow disk body and can resist one side of the horizontal pull rope, and a spiral spring which is located inside the hollow disk body and can generate elastic pressure on the arc-shaped resistance plate toward the direction of the horizontal pull rope.

[0014] Preferably, the elastic positioning mechanism includes a hollow disk body, the interior of the hollow disk body is provided with a rope through hole which is placed on the periphery of the horizontal pull rope, the hollow disk body is provided with a cylindrical component movable cavity on the periphery of the middle area of ​​the rope through hole, the bottom of the hollow disk body is embedded with a longitudinal connecting rope, the bottom of the longitudinal connecting rope is fixedly connected to the top of the longitudinal climbing rod, the interior of the hollow disk body is provided with a longitudinal component movable cavity on one side of the cylindrical component movable cavity, one end of the longitudinal component movable cavity and the circumferential surface of the cylindrical component movable cavity are connected through a No. 1 rod body through hole, the other end of the longitudinal component movable cavity is provided with a No. 2 rod body through hole, and the hollow disk An inner limit movable plate capable of axially moving along the movable cavity of the longitudinal component is placed inside the movable cavity of the longitudinal component, one end of the inner limit movable plate is fixedly installed with a No. 1 movable rod passing through the through hole of the No. 1 rod body, and an arc-shaped resistance plate capable of resisting one side of the horizontal pull rope is fixedly installed at one end of the No. 1 movable rod located inside the movable cavity of the cylindrical component, and a No. 2 movable rod passing through the through hole of the No. 2 rod body is fixedly installed at the other end of the inner limit movable plate, a coil spring in a compressed state is placed on the outer periphery of the rod body located inside the movable cavity of the longitudinal component of the No. 2 movable rod, and a force plate is fixedly installed at one end of the No. 2 movable rod located outside the hollow disk body.

[0015] The preferred cultivation steps are as follows: S: insert the insertion cones at the bottom of the two longitudinal support rods into the ground, and then insert the insertion cone at the bottom of the pre-tightening rope into the ground; S: due to the relationship between the ball head and the hemispherical shell, the longitudinal support rod can be adjusted in the longitudinal angle, so that the extension line of the axis line of the horizontal threaded sleeve and the extension line of the pre-tightening rope intersect at the longitudinal axis of the longitudinal support rod, and the angle between each two extension lines is one hundred and twenty degrees. At this time, the longitudinal support rod is subjected to the same force in three directions, and the longitudinal support rod can be kept in a longitudinal fixed state, thereby realizing the adjustment of the support angle; S: directional rotation of the horizontal threaded sleeve, since the spiral direction of the No. 1 thread structure is opposite to the spiral direction of the No. 2 thread structure, and during the rotation process In the embodiment, the existence of the polygonal limit rod prevents the No. 1 external threaded rod and the No. 2 external threaded rod from rotating relative to each other. Therefore, the distance between the No. 1 external threaded rod and the No. 2 external threaded rod will change until the horizontal pull rope is in a straight state, thereby realizing the tension adjustment capability of the horizontal pull rope; S: Pull the force plate upward to make the arc-shaped resistance plate separate from the horizontal pull rope, so as to move the hollow disk horizontally and drive the longitudinal climbing rod to move horizontally until the longitudinal climbing rod moves to the vicinity of the tomato seedlings, and then release the tension on the force plate. Under the elastic action of the spiral spring, the arc-shaped resistance plate will resist the side of the longitudinal climbing rod again, thereby realizing the lateral adjustment capability of the longitudinal climbing rod, and then the tomato seedlings can be tied to the rod body of the longitudinal climbing rod.

[0016] Compared with the prior art, the present invention provides a tomato-specific cultivation rack and cultivation method, which have the following beneficial effects:

[0017] The form of equally divided triangles is used to achieve necessary pre-tightening effect on the longitudinal support rods in the supporting effect, thereby improving the anti-tilt ability of the longitudinal support rods. In addition, the device can tighten the horizontal pull rope, so that the horizontal pull rope can be in a straight state during operation, so as to improve the force stability of the tomato seedlings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A perspective view of the present invention;

[0019] Figure 2 is a three-dimensional cross-sectional view of the present invention;

[0020] Figure 3 It is a three-dimensional diagram of the universal ball joint mechanism of the present invention;

[0021] Figure 4 It is a three-dimensional cross-sectional view of the universal ball joint mechanism of the present invention;

[0022] Figure 5 is a three-dimensional cross-sectional view of the threaded length adjustment mechanism of the present invention;

[0023] Figure 6 A three-dimensional diagram of a polygonal limiting rod in the present invention;

[0024] Figure 7 is a three-dimensional diagram of the elastic positioning mechanism of the present invention;

[0025] Figure 8 It is a three-dimensional cross-sectional view of the elastic positioning mechanism in the present invention.

[0026] Among them: 1. Longitudinal support rod; 2. Insert cone; 3. Curved connecting rod; 4. Pre-tightening rope; 5. Horizontal pull rope; 6. Longitudinal climbing rod; 7. Universal ball joint mechanism; 71. Hemispherical shell; 72. Spherical installation cavity; 73. No. 1 connecting plate; 74. Ball head; 75. No. 2 connecting plate; 8. Threaded length adjustment mechanism; 81. Horizontal threaded sleeve; 82. No. 1 internal thread cavity; 83. No. 2 internal thread cavity; 84. No. 1 thread structure; 85. No. 2 thread structure; 86. No. 1 external thread rod; 87. No. 2 external thread Patterned rod; 88, No. 3 connecting plate; 89, No. 4 connecting plate; 810, polygonal limit cavity; 811, polygonal limit rod; 9, elastic positioning mechanism; 91, hollow disk; 92, longitudinal connecting rope; 93, rope perforation; 94, columnar component movable cavity; 95, longitudinal component movable cavity; 96, No. 1 rod body perforation; 97, No. 2 rod body perforation; 98, inner limit movable plate; 99, No. 1 movable rod; 910, arc-shaped resistance plate; 911, No. 2 movable rod; 912, spiral spring; 913, force plate. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] See also Figure 1 and Figure 2 A special tomato cultivation rack includes a longitudinal support rod 1 for supporting effect, a curved connecting rod 3 installed on the top of the longitudinal support rod 1, two pre-tightening ropes 4 with an angle of 120 degrees and one end fixedly embedded in the outer periphery of the top of the longitudinal support rod 1, an insertion cone 2 fixedly installed at the bottom of the pre-tightening rope 4 and below the longitudinal support rod 1, a horizontal pull rope 5 installed between the two curved connecting rods 3, and a plurality of longitudinal climbing rods 6 hanging below the horizontal pull rope 5 and used for fixing tomato seedlings. The insertion cones 2 at the bottom of the two longitudinal support rods 1 are inserted into the ground, and then the insertion cone 2 at the bottom of the pre-tightening rope 4 is inserted into the ground.

[0029] To adjust the support angle, refer to Figure 1 , Figure 2 , Figure 3 and Figure 4, it is necessary to set up a universal ball joint mechanism 7, which is provided with a hemispherical shell 71 for connecting the insertion cone 2 and a ball head 74 fixedly connected to the bottom end of the longitudinal support rod 1 and capable of being inserted into the hemispherical shell 71 to realize a ball joint connection. Due to the relationship between the ball head 74 and the hemispherical shell 71, the longitudinal support rod 1 can be adjusted at a longitudinal angle, so that the extension line of the axial center line of the horizontal threaded sleeve 81 intersects with the extension line of the pretensioning rope 4 at the longitudinal axis of the longitudinal support rod 1, and the angle between each two extension lines is one hundred and twenty degrees. At this time, the longitudinal support rod 1 is subjected to the same force in three directions, which can keep the longitudinal support rod 1 in a longitudinal fixed state, thereby realizing the adjustment of the support angle.

[0030] For the specific structure of the universal ball joint mechanism 7, please refer to Figure 3 and Figure 4 , including a hemispherical shell 71, a first connecting plate 73 which is an integral structure with the hemispherical shell 71 and fixedly connected to the insertion cone 2 is provided at the bottom of the hemispherical shell 71, a spherical mounting cavity 72 with an open top is provided inside the hemispherical shell 71, a rotatable ball head 74 is placed inside the hemispherical shell 71 located inside the spherical mounting cavity 72, the structural radius of the spherical mounting cavity 72 matches the structural radius of the ball head 74, and the depth of the spherical mounting cavity 72 is greater than the structural radius of the ball head 74, and a second connecting plate 75 which is an integral structure with the hemispherical shell 71 and fixedly mounted on the bottom end of the longitudinal support rod 1 is provided on the top of the ball head 74.

[0031] To achieve the tension adjustment capability of the horizontal cable 5, refer to Figure 1 , Figure 2 , Figure 5 and Figure 6 , it is necessary to set a threaded length adjustment mechanism 8, which is provided with a No. 1 external thread rod 86 and a No. 2 external thread rod 87 connected to the ends of the curved connecting rod 3 and the horizontal pull rope 5, a horizontal threaded sleeve 81 that is threadedly connected to the No. 1 external thread rod 86 and the No. 2 external thread rod 87 and can change the distance between the No. 1 external thread rod 86 and the No. 2 external thread rod 87 when rotating, and a No. 1 external thread rod 86 and the No. 2 external thread rod 87 inserted at the axis of the No. 1 external thread rod 86 and the No. 2 external thread rod 87 to prevent the No. 1 external thread rod 86 and the No. 2 external thread rod 87 from rotating relative to each other. The polygonal limiting rod 811 directionally rotates the horizontal threaded sleeve 81. Since the spiral direction of the No. 1 threaded structure 84 is opposite to the spiral direction of the No. 2 threaded structure 85, and during the rotation process, the existence of the polygonal limiting rod 811 prevents the No. 1 externally threaded rod 86 and the No. 2 externally threaded rod 87 from relative rotation. Therefore, the distance between the No. 1 externally threaded rod 86 and the No. 2 externally threaded rod 87 will change. Until this time, the horizontal pull rope 5 is in a straightened state, thereby realizing the tension adjustment capability of the horizontal pull rope 5.

[0032] For the specific structure of the threaded length adjustment mechanism 8, please refer to Figure 5 and Figure 6 , including a horizontal threaded sleeve 81, a No. 1 externally threaded rod 86 and a No. 2 externally threaded rod 87, one end of the horizontal threaded sleeve 81 is provided with a No. 1 internally threaded cavity 82 with an inner concave structure, and the other end of the horizontal threaded sleeve 81 is provided with a No. 2 internally threaded cavity 83 with an inner concave structure, the rod body of the No. 1 externally threaded rod 86 is installed in the interior of the No. 1 internally threaded cavity 82 through a No. 1 threaded structure 84, and the rod body of the No. 2 externally threaded rod 87 is installed in the interior of the No. 2 internally threaded cavity 83 through a No. 2 threaded structure 85, the No. 1 externally threaded rod 86 and the No. 2 externally threaded rod 87 are provided with a polygonal limiting cavity 810 with an inner concave structure at the opposite ends, a polygonal limiting rod 811 inserted into the polygonal limiting cavity 810 is fixedly installed in the center of the horizontal threaded sleeve 81, one end of the No. 1 externally threaded rod 86 is provided with a No. 3 connecting plate 88 with an integral structure therewith and fixedly connected to the curved connecting rod 3, and one end of the No. 2 externally threaded rod 87 is provided with a No. 3 connecting plate 88 with an integral structure therewith and fixedly connected to the curved connecting rod 3. The fourth connecting plate 89 is structured and fixedly connected to the horizontal pull rope 5, the extension line of the axial center line of the horizontal threaded sleeve 81 intersects with the extension line of the pre-tightening rope 4 at the longitudinal axis of the longitudinal support rod 1, and the angle between each two extension lines is one hundred and twenty degrees, the structural shape of the cross section of the polygonal limiting cavity 810 is consistent with the structural shape of the cross section of the polygonal limiting rod 811, both are polygonal structures, and the structural dimensions of the cross section of the polygonal limiting cavity 810 match the structural dimensions of the cross section of the polygonal limiting rod 811, the No. 1 threaded structure 84 includes an internal threaded structure arranged inside the No. 1 internal threaded cavity 82 and an external threaded structure arranged on the rod body of the No. 1 external threaded rod 86, the No. 2 threaded structure 85 includes an internal threaded structure arranged inside the No. 2 internal threaded cavity 83 and an external threaded structure arranged on the rod body of the No. 2 external threaded rod 87, and the spiral direction of the No. 1 threaded structure 84 is opposite to the spiral direction of the No. 2 threaded structure 85.

[0033] To achieve the lateral adjustment capability of the longitudinal climbing bar 6, see Figure 1 , Figure 2 , Figure 7 and Figure 8, it is necessary to set up an elastic positioning mechanism 9, which is provided with a hollow disk 91 which is placed on the horizontal pull rope 5 and can move axially along the horizontal pull rope 5, an arc-shaped resistance plate 910 located inside the hollow disk 91 and can resist one side of the horizontal pull rope 5, and a spiral spring 912 located inside the hollow disk 91 and can generate elastic pressure on the arc-shaped resistance plate 910 in the direction of the horizontal pull rope 5. Pull the force plate 913 upward to make the arc-shaped resistance plate 910 separate from the horizontal pull rope 5, so that the hollow disk 91 can be moved horizontally, and the longitudinal climbing rod 6 can be driven to move horizontally until the longitudinal climbing rod 6 moves to the vicinity of the tomato seedlings, and then the pulling force on the force plate 913 is released. Under the elastic action of the spiral spring 912, the arc-shaped resistance plate 910 again resists the side of the longitudinal climbing rod 6, thereby realizing the lateral adjustment capability of the longitudinal climbing rod 6.

[0034] For the specific structure of the elastic positioning mechanism 9, please refer to Figure 7 and Figure 8 , including a hollow disk body 91, the interior of the hollow disk body 91 is provided with a rope through hole 93 which is placed on the periphery of the horizontal pull rope 5, the hollow disk body 91 is provided with a cylindrical component active cavity 94 on the periphery of the middle area of ​​the rope through hole 93, the bottom of the hollow disk body 91 is embedded with a longitudinal connecting rope 92, the bottom of the longitudinal connecting rope 92 is fixedly connected to the top of the longitudinal climbing rod 6, the interior of the hollow disk body 91 is provided with a longitudinal component active cavity 95 on one side of the cylindrical component active cavity 94, one end of the longitudinal component active cavity 95 is connected to the circumferential surface of the cylindrical component active cavity 94 through a No. 1 rod body through hole 96, the other end of the longitudinal component active cavity 95 is provided with a No. 2 rod body through hole 97, the hollow disk body 91 is located at the longitudinal part An inner limit movable plate 98 capable of axially moving along the longitudinal component movable cavity 95 is placed inside the movable cavity 95 of the longitudinal component, a No. 1 movable rod 99 passing through the No. 1 rod body through-hole 96 is fixedly installed at one end of the inner limit movable plate 98, an arc-shaped resistance plate 910 capable of resisting one side of the horizontal pull rope 5 is fixedly installed at one end of the No. 1 movable rod 99 located inside the movable cavity 94 of the cylindrical component, a No. 2 movable rod 911 passing through the No. 2 rod body through-hole 97 is fixedly installed at the other end of the inner limit movable plate 98, a coil spring 912 in a compressed state is placed on the outer periphery of the rod body located inside the movable cavity 95 of the longitudinal component, and a force application plate 913 is fixedly installed at one end of the No. 2 movable rod 911 located outside the hollow disk body 91.

[0035] When in use, follow the following steps: S1: insert the insertion cones 2 at the bottom of the two longitudinal support rods 1 into the ground, and then insert the insertion cones 2 at the bottom of the pre-tensioning rope 4 into the ground; S2: due to the relationship between the ball head 74 and the hemispherical shell 71, the longitudinal support rod 1 can be adjusted in the longitudinal angle, so that the extension line of the axial center line of the horizontal threaded sleeve 81 intersects with the extension line of the pre-tensioning rope 4 at the longitudinal axis of the longitudinal support rod 1, and the angle between each two extension lines is one hundred and twenty degrees. At this time, the longitudinal support rod 1 is subjected to the same force in three directions, and the longitudinal support rod 1 can be kept in a longitudinal fixed state, thereby realizing the adjustment of the support angle; S3: directional rotation of the horizontal threaded sleeve 81. Since the spiral direction of the No. 1 thread structure 84 is opposite to the spiral direction of the No. 2 thread structure 85, and during the rotation, the polygon The existence of the limiting rod 811 prevents the No. 1 externally threaded rod 86 and the No. 2 externally threaded rod 87 from rotating relative to each other. Therefore, the distance between the No. 1 externally threaded rod 86 and the No. 2 externally threaded rod 87 will change, until this time, the horizontal pull rope 5 is in a straightened state, thereby realizing the tension adjustment capability of the horizontal pull rope 5; S4: Pull the force plate 913 upward to make the arc-shaped contact plate 910 disengage from the horizontal pull rope 5, so as to move the hollow disk 91 horizontally and drive the longitudinal climbing rod 6 to move horizontally until the longitudinal climbing rod 6 moves to the vicinity of the tomato seedlings, and then release the tension on the force plate 913. Under the elastic action of the coil spring 912, the arc-shaped contact plate 910 again contacts the side of the longitudinal climbing rod 6, thereby realizing the lateral adjustment capability of the longitudinal climbing rod 6, and then the tomato seedlings can be tied to the rod body of the longitudinal climbing rod 6.

[0036] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A tomato cultivation rack, comprising a longitudinal support rod (1) for supporting, a curved connecting rod (3) mounted on the top of the longitudinal support rod (1), two pre-tightening ropes (4) with an angle of 120 degrees and one end fixedly embedded in the outer periphery of the top of the longitudinal support rod (1), an insertion cone (2) fixedly mounted at the bottom end of the pre-tightening rope (4) and below the longitudinal support rod (1), a horizontal pull rope (5) mounted between the two curved connecting rods (3), and a plurality of longitudinal climbing rods (6) draped below the horizontal pull rope (5) and used for fixing tomato seedlings, characterized in that: Also includes, A universal ball joint mechanism (7), wherein a hemispherical housing (71) for connecting to the insertion cone (2) is provided inside the mechanism, and a ball head (74) is fixedly connected to the bottom end of the longitudinal support rod (1) and can be inserted into the hemispherical housing (71) to achieve a ball joint connection; and a threaded length adjustment mechanism (8), the interior of which is provided with a first externally threaded rod (86) and a second externally threaded rod (87) connected to the ends of the curved connecting rod (3) and the horizontal pull rope (5), a horizontal threaded sleeve (81) threadedly connected to the first externally threaded rod (86) and the second externally threaded rod (87) and capable of changing the distance between the first externally threaded rod (86) and the second externally threaded rod (87) when rotating, and a polygonal limit rod (811) inserted into the axis of the first externally threaded rod (86) and the second externally threaded rod (87) and capable of preventing the first externally threaded rod (86) and the second externally threaded rod (87) from rotating relative to each other; An elastic positioning mechanism (9) is provided with a hollow disk (91) which is sleeved on the horizontal pull rope (5) and can move along the axial direction of the horizontal pull rope (5), an arc-shaped contact plate (910) located inside the hollow disk (91) and can contact one side of the horizontal pull rope (5), and a coil spring (912) located inside the hollow disk (91) and can generate elastic pressure on the arc-shaped contact plate (910) in the direction of the horizontal pull rope (5); The elastic positioning mechanism (9) comprises a hollow disk (91), wherein a wire rope through hole (93) is arranged inside the hollow disk (91) and is placed around the periphery of the horizontal pull rope (5), wherein the hollow disk (91) is provided with a columnar component movable cavity (94) on the periphery of the middle area of ​​the wire rope through hole (93), wherein a longitudinal connecting rope (92) is embedded in the bottom of the hollow disk (91), wherein the bottom of the longitudinal connecting rope (92) is fixedly connected to the top of the longitudinal climbing rod (6), wherein a longitudinal component movable cavity (95) is arranged inside the hollow disk (91) on one side of the columnar component movable cavity (94), wherein one end of the longitudinal component movable cavity (95) and the circumferential surface of the columnar component movable cavity (94) are connected via a first rod body through hole (96), wherein a second rod body through hole (97) is arranged at the other end of the longitudinal component movable cavity (95), wherein the hollow disk (91) is provided with a second rod body through hole (97), wherein the second rod body through hole (97) is provided at the other end of the longitudinal component movable cavity (95), wherein the second rod body through hole (97) is provided at the other end of the hollow disk (91), wherein the second rod body through hole (97) is provided at the other end of the second rod body through hole (96). An inner limit movable plate (98) capable of axially moving along the longitudinal component movable cavity (95) is arranged inside the longitudinal component movable cavity (95); a first movable rod (99) penetrating the first rod body through hole (96) is fixedly mounted on one end of the inner limit movable plate (98); an arc-shaped contact plate (910) capable of contacting one side of the horizontal pull rope (5) is fixedly mounted on one end of the first movable rod (99) located inside the columnar component movable cavity (94); a second movable rod (911) penetrating the second rod body through hole (97) is fixedly mounted on the other end of the inner limit movable plate (98); a helical spring (912) in a compressed state is placed on the outer periphery of the rod body of the second movable rod (911) located inside the longitudinal component movable cavity (95); and a force application plate (913) is fixedly mounted on one end of the second movable rod (911) located outside the hollow disk (91).

2. A tomato-specific cultivation rack according to claim 1, characterized in that: The universal ball joint mechanism (7) comprises a hemispherical shell (71), the bottom of the hemispherical shell (71) is provided with a first connecting plate (73) which is integrally formed with the hemispherical shell (71) and fixedly connected to the insertion cone (2), the interior of the hemispherical shell (71) is provided with a spherical installation cavity (72) with an open top, the hemispherical shell (71) is provided with a rotatable ball head (74) inside the spherical installation cavity (72), and the top of the ball head (74) is provided with a second connecting plate (75) which is integrally formed with the hemispherical shell and fixedly installed on the bottom end of the longitudinal support rod (1).

3. A tomato-specific cultivation rack according to claim 2, characterized in that: The structural radius of the spherical installation cavity (72) matches the structural radius of the ball head (74), and the depth of the spherical installation cavity (72) is greater than the structural radius of the ball head (74).

4. A tomato-specific cultivation rack according to claim 3, characterized in that: The threaded length adjustment mechanism (8) comprises a horizontal threaded sleeve (81), a No. 1 external threaded rod (86) and a No. 2 external threaded rod (87); one end of the horizontal threaded sleeve (81) is provided with a No. 1 internal threaded cavity (82) with an inner concave structure; the other end of the horizontal threaded sleeve (81) is provided with a No. 2 internal threaded cavity (83) with an inner concave structure; the rod body of the No. 1 external threaded rod (86) is installed inside the No. 1 internal threaded cavity (82) via a No. 1 threaded structure (84); the rod body of the No. 2 external threaded rod (87) is installed inside the No. 2 internal threaded cavity (83) via a No. 2 threaded structure (85). 83), the first external threaded rod (86) and the second external threaded rod (87) are provided with a polygonal limiting cavity (810) with an inner concave structure at opposite ends, a polygonal limiting rod (811) inserted into the polygonal limiting cavity (810) is fixedly installed at the center of the horizontal threaded sleeve (81), one end of the first external threaded rod (86) is provided with a third connecting plate (88) which is an integral structure with it and fixedly connected to the curved connecting rod (3), and one end of the second external threaded rod (87) is provided with a fourth connecting plate (89) which is an integral structure with it and fixedly connected to the horizontal pull rope (5).

5. The tomato-specific cultivation rack according to claim 4, characterized in that: The extension line of the axis line of the horizontal threaded sleeve (81) and the extension line of the pre-tensioning rope (4) intersect at the longitudinal axis of the longitudinal support rod (1), and the angle between each two extension lines is one hundred and twenty degrees.

6. A tomato-specific cultivation rack according to claim 5, characterized in that: The structural shape of the cross section of the polygonal limiting cavity (810) is consistent with the structural shape of the cross section of the polygonal limiting rod (811), both of which are polygonal structures, and the structural dimensions of the cross section of the polygonal limiting cavity (810) match the structural dimensions of the cross section of the polygonal limiting rod (811).

7. A tomato-specific cultivation rack according to claim 6, characterized in that: The No. 1 thread structure (84) comprises an internal thread structure arranged inside the No. 1 internal thread cavity (82) and an external thread structure arranged on the rod body of the No. 1 external thread rod (86); the No. 2 thread structure (85) comprises an internal thread structure arranged inside the No. 2 internal thread cavity (83) and an external thread structure arranged on the rod body of the No. 2 external thread rod (87); and the spiral direction of the No. 1 thread structure (84) is opposite to the spiral direction of the No. 2 thread structure (85).

8. A cultivation method for a tomato-specific cultivation rack according to claim 7, characterized in that: The following steps are included: S1: inserting the insertion cones (2) at the bottom of the two longitudinal support rods (1) into the ground, and then inserting the insertion cones (2) at the bottom of the pre-tensioning rope (4) into the ground; S2: Due to the relationship between the ball head (74) and the hemispherical housing (71), the longitudinal support rod (1) can be adjusted in longitudinal angle, so that the extension line of the axis line of the horizontal threaded sleeve (81) and the extension line of the pre-tensioning rope (4) intersect at the longitudinal axis of the longitudinal support rod (1), and the angle between each two extension lines is one hundred and twenty degrees. At this time, the longitudinal support rod (1) is subjected to the same force in three directions, and the longitudinal support rod (1) can be kept in a longitudinal fixed state, thereby realizing the adjustment of the support angle; S3: Directingly rotating the horizontal threaded sleeve (81), since the spiral direction of the No. 1 threaded structure (84) is opposite to the spiral direction of the No. 2 threaded structure (85), and, during the rotation process, the presence of the polygonal limit rod (811) prevents the No. 1 external threaded rod (86) and the No. 2 external threaded rod (87) from rotating relative to each other, and therefore, the distance between the No. 1 external threaded rod (86) and the No. 2 external threaded rod (87) changes, until this time, the horizontal pull rope (5) is in a straightened state, thereby realizing the tension adjustment capability of the horizontal pull rope (5); S4: Pull the force plate (913) upwards so that the arc-shaped resistance plate (910) is separated from the horizontal pull rope (5), thereby horizontally moving the hollow disk (91) and driving the longitudinal climbing rod (6) to move horizontally until the longitudinal climbing rod (6) moves to the vicinity of the tomato seedlings. Then, the pulling force on the force plate (913) is released. Under the elastic action of the coil spring (912), the arc-shaped resistance plate (910) again resists the side of the longitudinal climbing rod (6), thereby realizing the lateral adjustment capability of the longitudinal climbing rod (6), and then the tomato seedlings can be tied to the rod body of the longitudinal climbing rod (6).

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