Seedling tray height regulating and controlling device for wet seedling raising

Abstract

The utility model relates to the technical field of tobacco seedling raising, in particular to a seedling tray height adjusting and controlling device for wet seedling raising, which comprises an adjusting and controlling unit consisting of positioning plates positioned on two sides of a seedling pond and extending along the length direction of the seedling pond. The traction mechanism comprises winding columns arranged on the two positioning plates in a staggered mode, the two ends of a pull wire perpendicular to the positioning plates are wound around the two winding columns, and the middle section of the pull wire is used for being wound to the bottom of one end of the seedling tray in the length direction and lifting the seedling tray. The seedling pond is simple in structure, the height of the seedling trays in the seedling pond relative to the pond bottom can be rapidly adjusted, and the underwater depth of all the seedling trays and later-stage dry-wet alternate seedling hardening operation are effectively guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of tobacco seedling cultivation, in particular to a seedling tray height control device for moist seedling cultivation. Background Art

[0002] At present, tobacco seedling cultivation is divided into two methods: floating seedling cultivation and wet seedling cultivation. Both methods use multiple seedling trays placed in a water seedling pool for seedling cultivation. The former has a larger volume and depth of seedling pool, which can make the plastic foam seedling tray float on the water surface and present a "self-leveling" effect. Therefore, each seedling hole in the seedling tray can be fully supplied with water. However, floating seedling cultivation consumes a lot of water and has certain requirements for the seedling pool itself. Generally, concrete is used inside the seedling workshop. The latter has relatively low requirements for the construction of the seedling pool. It can be temporarily dug and lined with plastic film, and then water and seedling trays are placed. The overall water depth of 1-2cm can meet the needs of seedling tray cultivation, and the site can be leveled after the seedling cultivation is completed and can be used for other purposes. However, because it is difficult to achieve absolute flatness at the bottom of the seedling pool in wet seedling cultivation, there are inconsistent water depths in different areas, resulting in the inability to ensure that all seedling trays are completely out of water during seedling hardening in the later stage of seedling cultivation. Utility Model Content

[0003] The purpose of the utility model is to provide a seedling tray height control device for wet seedling cultivation. The utility model has a simple structure and can quickly adjust the height of the seedling tray in the seedling pool relative to the pool bottom, effectively ensuring the water entry depth of all seedling trays and the subsequent dry-wet alternating seedling hardening operation.

[0004] To achieve the above object, the present invention provides the following technical solutions:

[0005] A seedling tray height control device for moist seedling cultivation comprises a control unit composed of positioning plates located on both sides of a seedling pool and extending along the length direction of the seedling pool, the control unit comprises at least one pulling mechanism, the pulling mechanism comprises winding posts staggered on the two positioning plates, both ends of a pull wire arranged perpendicular to the positioning plates are wound around the two winding posts, and the middle section of the pull wire is used to wind around the bottom of one end of the seedling tray in the length direction and lift the seedling tray.

[0006] Preferably, the bottom surface of the winding post cooperates with a bearing preset on the positioning plate, and an adjusting gear is coaxially fixed on the winding post; the pulling mechanism also includes a rack for meshing and transmitting the adjusting gear.

[0007] Preferably, one of the two racks is selected as an active rack, and a linkage plate is vertically provided at one end of the rack away from the other positioning plate. The linkage plate is assembled with the smooth rod surface of one end of the screw rod through a bearing preset on the plate surface, and the other end of the screw rod is assembled with a screw hole preset on the positioning plate.

[0008] Preferably, the active rack is connected to another rack via a pull rod.

[0009] Preferably, ground nails are respectively provided at both ends of the bottom surface of the positioning plate.

[0010] The working mode of the utility model is as follows:

[0011] The positioning plates are installed at equal heights on both sides of the seedling pond by driving ground nails into the ground. Then, by rotating the screw rod, the screw rod drives the linkage plate to move horizontally along the width direction of the positioning plate, thereby realizing the same-direction horizontal movement of the active rack through the pull rod to drive the other rack. Since the rack meshes with the transmission adjustment gear, the two winding posts can be rotated in the same direction. Since the two winding posts are staggered and the pull wire is kept vertical to the positioning plate, and the pull wire is wound in the same direction on the winding post, the same-direction rotation of the two winding posts can realize synchronous tightening or lengthening of the pull wire.

[0012] First, the pull wire is synchronously lengthened so that the pull wire passes through the bottom of the seedling tray and supports one end of the seedling tray. At the same time, the other end of the seedling tray can be supported by the pull wire of another set of pulling mechanisms. In this way, when a certain end of the seedling tray needs to be lifted or the entire tray needs to be lifted, the corresponding pull wire can be tightened; when a certain end of the seedling tray needs to be lowered or the entire tray needs to be lowered, the corresponding pull wire can be lengthened, so that the height of the seedling tray relative to the seedling pool can be changed, and then the relative height of the seedling tray and the water surface in the seedling pool can be changed.

[0013] Compared with the prior art, the utility model has the following advantages: the utility model has a simple structure, can quickly adjust the height of the seedling tray in the seedling pool relative to the pool bottom, effectively ensure the water depth of all seedling trays and the subsequent dry-wet alternating seedling hardening operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the control device described in the specific implementation method;

[0015] Figure 2 It is a schematic diagram of the use state of the regulation described in the specific implementation method;

[0016] Figure 3 It is a schematic diagram of the positional relationship of two winding posts in the traction mechanism described in the specific implementation method. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0018] like Figure 1-3 As shown, a seedling tray height control device for wet seedling cultivation includes a control unit composed of positioning plates 1 located on both sides of the seedling pool and extending along the length direction of the seedling pool. The control unit includes at least one group of pulling mechanisms 2, and ground nails 11 are respectively provided at both ends of the bottom surface of the positioning plate 1.

[0019] The pulling mechanism 2 includes winding posts 21 staggered between the two positioning plates 1, two ends of a pull wire 22 arranged perpendicular to the positioning plate 1 are wound around the two winding posts 21 in the same direction, and the middle section of the pull wire 22 is used to wind around the bottom of one end of the seedling tray 3 in the length direction and lift the seedling tray 3, the bottom surface of the winding post 21 cooperates with a bearing preset on the positioning plate 1, and an adjusting gear 23 is coaxially fixed on the winding post 21; the pulling mechanism also includes a rack 24 for meshing and transmitting the adjusting gear 23, one of the two racks 24 is selected as an active rack, and a linkage plate 25 is vertically provided at one end away from the other positioning plate, the linkage plate 25 is assembled with the smooth rod surface of one end of the screw 26 through a bearing preset on the plate surface, the other end of the screw 26 is assembled with a screw hole preset on the positioning plate 1, and the active rack is connected to the other rack through a pull rod 27.

[0020] The working mode of the utility model is as follows:

[0021] The positioning plate 1 is installed at the same height on both sides of the seedling pond by driving the ground nails 11 into the ground, and then the screw 26 is rotated to drive the linkage plate 25 to move horizontally along the width direction of the positioning plate 1, thereby realizing the same-direction horizontal movement of the other rack driven by the active rack through the pull rod 27. Since the rack 24 is engaged with the transmission adjustment gear 23, the same-direction rotation of the two winding poles 23 is realized.

[0022] like Figure 3 As shown, since the two winding poles 21 are staggered and the pull wire 22 is kept vertical to the positioning plate 1, and the pull wire 22 is wound in the same direction on the winding poles 21, the same-direction rotation of the two winding poles 21 can achieve synchronous tightening or lengthening of the pull wire 22.

[0023] First, the pull wire 22 is synchronously lengthened so that the pull wire 22 passes through the bottom of the seedling tray 3 and supports one end of the seedling tray 3. At the same time, the pull wire 22 of another set of pulling mechanisms 2 can support the other end of the seedling tray 3. In this way, when it is necessary to lift one end of the seedling tray 3 or lift the whole tray 3, the corresponding pull wire 22 can be tightened; when it is necessary to lower one end of the seedling tray 3 or lower the whole tray 3, the corresponding pull wire 22 can be lengthened, so that the height of the seedling tray 3 relative to the seedling pool is changed, and then the relative height of the seedling tray 3 and the water surface in the seedling pool is changed.

[0024] Finally, it should be noted that when the seedling tray is initially placed, the position of the pull rod 27 should correspond to the gap in the seedling hole as much as possible. At the same time, a certain height difference needs to be ensured between the pull rod 27 and the seedling tray. For example, the height of the positioning plate 1 and the ground can be adjusted, or a heightening block can be set on the rack 24 to connect the pull rod 27, so that the pull rod 27 is connected to the positioning plate 1 at a certain height. This can avoid the influence of the pull rod 27 on the tobacco seedlings.

Claims

1. A seedling tray height control device for moist seedling raising, characterized in that: It includes a control unit composed of positioning plates located on both sides of the seedling pool and extending along the length direction of the seedling pool. The control unit includes at least one pulling mechanism. The pulling mechanism includes winding columns staggered on the two positioning plates. Both ends of the pulling wire arranged on the vertical positioning plates are wound around the two winding columns, and the middle section of the pulling wire is used to wind around the bottom of one end of the seedling tray in the length direction and lift the seedling tray.

2. The seedling tray height control device for moist seedling raising according to claim 1, characterized in that: The bottom surface of the winding column cooperates with the bearing preset on the positioning plate, and an adjusting gear is coaxially fixed on the winding column; The pulling mechanism also includes a rack for meshing and transmitting the adjusting gear.

3. The seedling tray height control device for moist seedling raising as claimed in claim 2, characterized in that: One of the two racks is selected as an active rack, and a linkage plate is vertically provided at one end of the rack away from the other positioning plate. The linkage plate is assembled with the smooth rod surface of one end of the screw through a bearing preset on the plate surface, and the other end of the screw is assembled with a screw hole preset on the positioning plate.

4. The seedling tray height control device for moist seedling raising as claimed in claim 3, characterized in that: The active rack is connected to another rack through a pull rod.

5. The seedling tray height control device for moist seedling raising as claimed in claim 2, characterized in that: Ground nails are respectively arranged at two ends of the bottom surface of the positioning plate.

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