CN213174194U - Self-locking fixing device for plastic film of greenhouse - Google Patents
Self-locking fixing device for plastic film of greenhouse Download PDFInfo
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- CN213174194U CN213174194U CN202021682247.3U CN202021682247U CN213174194U CN 213174194 U CN213174194 U CN 213174194U CN 202021682247 U CN202021682247 U CN 202021682247U CN 213174194 U CN213174194 U CN 213174194U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/25—Greenhouse technology, e.g. cooling systems therefor
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Abstract
The utility model provides a self-locking fixing device for a plastic film of a greenhouse, which comprises a hook seat block, a hook and an open snap ring; the hook seat block comprises a seat block body, a limiting groove is formed in the lower end of the seat block body close to the right side, and an opening clamping ring with an opening direction perpendicular to the seat block body and facing upwards is fixed at one end, far away from the limiting groove, above the seat block body and used for clamping the steel reinforcement framework. The utility model discloses a from locking-type fixing device can improve the installation effectiveness, can reduce the damage to the plastic film simultaneously, improves the use strength and the life-span of plastic film.
Description
Technical Field
The utility model belongs to the technical field of warmhouse booth, a from locking-type fixing device for warmhouse booth plastic film is related to.
Background
The greenhouse is characterized in that an air outlet is opened and closed at variable time according to the weather temperature, the air outlet is reserved at the top of the greenhouse under the normal condition, an upper plastic film and a lower plastic film are overlapped and sealed, and the upper end edge of the lower plastic film is fixed on a steel bar framework of the greenhouse through wrapping nylon stem ropes. The plastic film on the upper surface is pulled down or folded up to complete the opening and closing action of the air outlet. At present, the upper end edge of a plastic film below the plastic film is fixed on a steel bar framework of the greenhouse, an iron wire or a rope is adopted to penetrate through the plastic film and is manually tied on the steel bar framework of the greenhouse, time and labor are wasted, meanwhile, when the plastic film penetrates through the plastic film, the diameter of a hole is irregularly enlarged due to the fact that the position of the hole is difficult to control correctly, the plastic film is damaged when the plastic film is fixed, and therefore the service strength and the service life of the plastic film are influenced.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides a can realize going on fixing fast laborsavingly to warmhouse booth's plastic film of the department of letting out wind mouthful from locking-type fixing device, should improve the installation effectiveness from locking-type fixing device, can reduce the damage to the plastic film simultaneously, improve the use strength and the life-span of plastic film.
In order to achieve the above purpose, the utility model adopts the following technical scheme: a self-locking fixing device for a plastic film of a greenhouse comprises a hook seat block, a hook and an opening snap ring; couple seat piece includes seat piece body, and the lower extreme of seat piece body leans on the right side to be equipped with the spacing groove, and the one end of just keeping away from the spacing groove in the top of seat piece body is fixed with the opening snap ring of opening direction perpendicular to seat piece body towards the top for press from both sides tight steel reinforcement skeleton, the couple is including being used for with seat piece body rotatable coupling's linkage segment and being used for hooking the bending segment of plastic film stalk rope, and the spacing groove is arranged in to the linkage segment of couple, and the couple can realize relative rotation between spacing groove and seat piece body.
Furthermore, after the hook hooks the plastic film stem rope and the split snap ring clamps the steel bar framework, the included angle alpha between the plane where the axial direction of the hook is located and the normal direction of the plane where the bottom surface of the seat block body is located is less than or equal to 6 degrees.
Furthermore, the base block body of the hook base block comprises a first rectangular side plate and a second rectangular side plate which are arranged in parallel at intervals and have the same structure, an angle corresponding to the lower part of the first rectangular side plate and the lower part of the second rectangular side plate is respectively processed into an inclined plane, the inner sides of the bottom ends of the first rectangular side plate and the second rectangular side plate are fixed through a connecting plate vertical to the first rectangular side plate and the second rectangular side plate, limiting grooves in the shape of inverted U-shaped openings are respectively arranged at the corresponding positions of the lower ends of the first rectangular side plate and the second rectangular side plate, and the opening clamping rings are fixed on the connecting plate;
the connecting plate comprises a first rectangular bottom plate body, the first rectangular bottom plate body is fixed on the inner side above a first rectangular side plate and a second rectangular side plate, one end, far away from a U-shaped open slot, of the first rectangular bottom plate body is stamped towards the inner cavities of the first rectangular side plate and the second rectangular side plate to form a bent part with a Z-shaped cross section, a through hole for mounting a screw is formed in the horizontal plane of the bent part, the open clamping ring comprises 2 first arc-shaped clamping parts which are oppositely arranged along the vertical direction and used for clamping a steel bar framework, the bottom ends of the 2 first arc-shaped clamping parts are connected through a first U-shaped fixing part which is horizontally arranged, the first U-shaped fixing part is horizontally arranged on the horizontal plane of the bent part, the screw is mounted in the through hole along the vertical direction, and the first U-shaped fixing part is;
the connecting section of the hook is a U-shaped hook body, an arc-shaped bending section is formed by bending the two free ends of the U-shaped hook body backwards, a first straight section at the bottom end of the U-shaped hook body is arranged between the first rectangular side plate and the second rectangular side plate, the bending parts at the two ends are respectively arranged in the limiting grooves in the shape of the inverted U-shaped openings on the first rectangular side plate and the second rectangular side plate, and the two first vertical sections are respectively arranged on the outer sides of the first rectangular side plate and the second rectangular side plate;
or the linkage segment of couple is the L type coupler body that the symmetry set up, and the bottom horizontal segment of 2L type coupler bodies is arranged in the spacing groove of the type of falling U opening shape on first rectangle curb plate and the second rectangle curb plate respectively, and the outside of first rectangle curb plate and second rectangle curb plate is arranged in to the second vertical segment of 2L type coupler bodies, and the top free end of 2L type coupler bodies is bent backward respectively and is formed parallel segmental arc, and the bottom of 2 segmental arc is as an organic whole through the connection of the flat section of second, forms the bending section of U type.
Further, the connecting plate is a rectangular plate body, the connecting plate is fixed to the bottom of the first rectangular side plate and the bottom of the second rectangular side plate, openings above the first rectangular side plate and the second rectangular side plate are sealed, the cross section of the opening clamping ring is an opening C-shaped ring, and the bottom of the opening C-shaped ring and the upper end face of the connecting plate are fixed into a whole.
Further, the connecting plate includes L type bottom plate body, and L type bottom plate body seals the top and the left end opening of first rectangle curb plate and second rectangle curb plate, and is equipped with the through-hole that is used for mounting screw on the vertical terminal surface of L type bottom plate body, the opening snap ring includes 2 symmetries on integrated into one piece's the position in upper portion and sets up second arc clamping part to and be located the second U type fixed part that carries out the connection with second arc clamping part bottom of lower part, the vertical terminal surface outside of L type bottom plate body is hugged closely along the vertical direction to second U type fixed part, and the opening direction between 2 second arc clamping parts is towards the top of L type bottom plate body horizontal end face, along horizontal direction mounting screw in the through-hole to adopt the nut to screw up fixed second U type fixed part.
Compared with the prior art, the utility model discloses following beneficial effect has: the utility model discloses can realize fixing the plastic film of warmhouse booth department of letting out wind fast laborsavingly, should improve the installation effectiveness from locking-type fixing device, can reduce the damage to the plastic film simultaneously, improve the use strength and the life-span of plastic film.
Drawings
Fig. 1 is a schematic structural view of the self-locking type fixing device of the present invention; also example 1;
FIG. 2 is a schematic view of the hook construction;
FIG. 3 is a left side view of FIG. 2;
FIG. 4 is another schematic view of the hook construction;
FIG. 5 is a left side view of FIG. 4;
FIG. 6 is a schematic view showing an installation structure of a hook block and a coupling plate in embodiment 1;
FIG. 7 is a top view of FIG. 6;
FIG. 8 is a schematic structural view of a snap ring of embodiment 1;
FIG. 9 is a top view of FIG. 8;
FIG. 10 is a left side view of FIG. 8;
FIG. 11 is a schematic view of an installation structure of a hook block, a connecting plate and a snap ring according to embodiment 2;
FIG. 12 is a left side view of FIG. 11;
FIG. 13 is a schematic view of an installation structure of a hook block, a connecting plate and a snap ring according to embodiment 3;
FIG. 14 is a schematic structural view of a retainer ring according to embodiment 3;
FIG. 15 is a schematic view of the mounting structure of the hook block and the snap ring of embodiment 4;
fig. 16 is a side view of the snap ring of embodiment 4.
FIG. 17 is a schematic view of a hook base block, an open ring and a hook mounting structure of embodiment 5;
FIG. 18 is a schematic view of the mounting structure of the hook block and the snap ring of embodiment 5;
fig. 19 is a schematic view of the installation of the self-locking fixing device with the steel bar framework and the stem rope of the present invention;
fig. 20 is a force analysis diagram of the self-locking principle of the present invention.
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.
Example 1
A self-locking fixing device for a plastic film of a greenhouse comprises a hook seat block 1, a hook 2 and a split snap ring 3; the hook seat block 1 comprises a seat block body, a limiting groove 1-4 is formed in the lower end of the seat block body close to the right side, an open clamping ring 3 with an opening direction perpendicular to the upward direction of the seat block body is fixed at one end, far away from the limiting groove 1-4, above the seat block body and used for clamping a steel bar framework, the hook 2 comprises a connecting section 2-1 used for being rotatably connected with the seat block body and a bending section 2-2 used for hooking a plastic film stem rope, the connecting section 2-1 of the hook 2 is arranged in the limiting groove 1-4, and the hook 2 can rotate relative to the seat block body in the limiting groove 1-4.
After the hook 2 hooks the plastic film stem rope and the split snap ring 3 clamps the steel bar framework, the included angle alpha between the plane where the axial direction of the hook is located and the normal direction of the plane where the bottom surface of the seat block body is located is less than or equal to 6 degrees.
The hook seat block comprises a seat block body and a hook seat block body, wherein the seat block body comprises a first rectangular side plate 1-1 and a second rectangular side plate 1-2 which are arranged in parallel at intervals and have the same structure, an angle corresponding to the lower part of the first rectangular side plate 1-1 and the lower part of the second rectangular side plate 1-2 is respectively machined into an inclined plane, the inner sides of the upper parts of the first rectangular side plate 1-1 and the second rectangular side plate 1-2 are fixed through a connecting plate 1-3 vertical to the first rectangular side plate 1-1 and the second rectangular side plate 1-2, limiting grooves 1-4 in inverted U-shaped opening shapes are respectively arranged at the corresponding positions of the lower ends of the first rectangular side plate 1-1 and the second rectangular side plate 1-2, and an opening clamping ring 3 is fixed on the connecting plate 1-3;
referring to fig. 6-7, the connecting plate 1-3 includes a first rectangular bottom plate body 1-3-1, the first rectangular bottom plate body 1-3-1 is fixed on the inner side above the first rectangular side plate 1-1 and the second rectangular side plate 1-2, and one end of the first rectangular bottom plate body 1-3-1, which is far away from the U-shaped open slot, is stamped towards the inner cavity of the first rectangular side plate 1-1 and the second rectangular side plate 1-2 to form a bent portion 1-3-2 with a Z-shaped cross section, and a through hole for mounting a screw is arranged on the lower level of the bent portion 1-3-2, referring to fig. 8-10, the open snap ring 3 includes 2 first arc-shaped clamping portions 3-1 which are arranged along the vertical direction and are arranged oppositely for clamping the steel bar framework, and the bottom ends of the 2 first arc-shaped clamping portions 3-1 pass through the first U-shaped fixing portion 3 which is arranged horizontally 2, the first U-shaped fixing part 3-2 is horizontally arranged on a lower horizontal plane of the bending part 1-3-2, a screw is arranged in the through hole along the vertical direction, and the first U-shaped fixing part 3-2 is fixed by screwing a nut; because the horizontal plane at the lower position of the bending part 1-3-2 has a certain distance with the upper end surfaces of the first rectangular bottom plate 1-3-1, the first rectangular side plate 1-1 and the second rectangular side plate, the bolt can be ensured not to protrude after being installed.
The connecting section 2-1 of the hook 2 is a U-shaped hook body, and is bent backwards along two free ends of the U-shaped hook body to form an arc-shaped bent section 2-2, a first flat section 2-1-1 at the bottom end of the U-shaped hook body is arranged between a first rectangular side plate 1-1 and a second rectangular side plate 1-2, bent parts 2-1-2 at two ends are respectively arranged in limiting grooves 1-4 in the shape of inverted U-shaped openings on the first rectangular side plate 1-1 and the second rectangular side plate 1-2, and two first vertical sections 2-1-3 are respectively arranged at the outer sides of the first rectangular side plate 1-1 and the second rectangular side plate 1-2;
or the connecting section 2-1 of the hook 2 is a L-shaped hook body which is symmetrically arranged, the bottom end horizontal sections 2-1-4 of the 2L-shaped hook bodies are respectively arranged in the limiting grooves 1-4 which are in the shape of the inverted U-shaped openings on the first rectangular side plate 1-1 and the second rectangular side plate 1-2, the second vertical sections 2-1-5 of the 2L-shaped hook bodies are arranged at the outer sides of the first rectangular side plate 1-1 and the second rectangular side plate 1-2, the upper free ends of the 2L-shaped hook bodies are respectively bent backwards to form parallel arc sections 2-2-1, and the bottom ends of the 2 arc sections 2-2-1 are connected into a whole through the second straight sections 2-2-2 to form the U-shaped bent section 2-2. The inner wall of the notch below the limiting groove 1-4 in the shape of the inverted U-shaped opening can enable the inner diameter of the notch to be smaller than the diameter of the hook 2 in a spot welding or stamping deformation mode, and the hook 2 is prevented from being separated.
Example 2
Referring to fig. 11 to 12, unlike embodiment 1, the connecting plate 1 to 3 is a rectangular plate body, the connecting plate is fixed above the first rectangular side plate 1 to 1 and the second rectangular side plate 1 to 2, and closes the openings above the first rectangular side plate 1 to 1 and the second rectangular side plate 1 to 2, the split snap ring 3 is a split C-shaped ring, and the bottom of the split C-shaped ring is fixed to the upper end face of the connecting plate 1 to 3 as a whole.
Example 3
Referring to fig. 13 to 14, different from embodiment 1, the connecting plate 1-3 includes an L-shaped bottom plate body 1-3-3, the L-shaped bottom plate body 1-3-3 closes the top ends and the left ends of the first rectangular side plate 1-1 and the second rectangular side plate 1-2, and through holes for mounting screws are provided on the vertical end surface 1-3-3-1 of the L-shaped bottom plate body 1-3-3, the snap ring 3 includes 2 symmetrically arranged second arc-shaped clamping portions 3-3 at the upper part and a second U-shaped fixing portion 3-4 at the lower part for connecting the bottom ends of the second arc-shaped clamping portions 3-3, the second U-shaped fixing portion 3-4 is tightly attached to the outside of the vertical end surface 1-3-3-1 of the L-shaped bottom plate body 1-3-3 in the vertical direction, and the opening direction among the 2 second arc-shaped clamping parts 3-3 faces to the upper part of the horizontal end face of the L-shaped bottom plate body 1-3-3, screws are installed in the through holes along the horizontal direction, and the second U-shaped fixing parts 3-4 are fixed by adopting nuts to tighten.
Example 4
Referring to fig. 15 to 16, the difference from embodiment 1 is that the seat block body of the hook seat block 1 may also be a rectangular solid block, a limiting groove 1-4 having an inverted U-shaped opening cross section and formed to penetrate through the rectangular solid block in the radial direction is formed near the right side of the lower end of the rectangular solid block, an inclined surface is formed on the left side of the lower end of the rectangular solid block, the open snap ring 3 is an open C-shaped ring, and the bottom of the open C-shaped ring and the upper end surface of the rectangular solid block are fixed to form a whole;
the connecting section 2-1 of the hook 2 is a U-shaped hook body, an arc-shaped bent section 2-2 is formed by bending the two free ends of the U-shaped hook body backwards, a first straight section 2-1-1 at the bottom end of the U-shaped hook body penetrates through a limiting groove 1-4 with an inverted U-shaped opening shape in cross section, and two first vertical sections 2-1-3 are respectively arranged on the outer side of the rectangular solid block body;
or the connecting section 2-1 of the hook 2 is a L-shaped hook body which is symmetrically arranged, the horizontal sections 2-1-4 at the bottom ends of the 2L-shaped hook bodies are respectively arranged in the limiting grooves 1-4 with the cross sections in the shapes of inverted U-shaped openings, the second vertical sections 2-1-5 of the 2L-shaped hook bodies are arranged at the outer sides of the rectangular solid blocks, the free ends above the 2L-shaped hook bodies are respectively bent backwards to form parallel arc sections 2-2-1, and the bottom ends of the 2 arc sections 2-2-1 are connected into a whole through the second straight sections 2-2-2 to form the U-shaped bent section 2-2.
Example 5
Referring to fig. 17 to 18, the difference from embodiment 4 is that the seat block body of the hook seat block 1 is a rectangular solid block, a limiting groove 1-4 having an inverted U-shaped opening in cross section is provided near the right side of the lower end of the rectangular solid block, an inclined surface is provided on the left side of the lower end of the rectangular solid block, a screw hole is provided in the seat block body at the left end face of the seat block body of the hook seat block, the structure of the open snap ring 3 is the same as that of the open snap ring 3 in embodiment 3, when mounting, the second U-shaped fixing portion 3-4 is attached to the left end face of the seat block body provided with the screw hole in the vertical direction, the opening direction between the 2 second arc-shaped clamping portions 3-3 is vertically upward, and a screw is installed in the through hole in the horizontal direction to fasten the second U-shaped fixing portion 3-4.
The utility model discloses a couple seat piece 1 adopts metal material, plastics material or timber material to make.
The hook 2 is made of spring steel wires with circular sections, and the split snap ring 3 is made of spring steel wires, spring steel plates or plastics.
Referring to fig. 19, the self-locking type fixing device of embodiment 1 is adopted as an example of the installation method of the present invention:
firstly, the draw hook 2 is arranged in the limiting groove 1-4 with the inverted U-shaped opening shape of the hook seat block 1, after assembly, the inner wall of the groove opening below the limiting groove 1-4 with the inverted U-shaped opening shape can be enabled to be smaller than the diameter of the hook 2 through spot welding or punching deformation, and the draw hook 2 is prevented from being separated. Then the hook 2 is rotated to a position which is in a straight line with the length direction of the hook seat block 1, the bending section 2-2 of the hook 2 is positioned at one side far away from the hook seat block 1, the cylindrical steel reinforcement framework 4 in the horizontal direction penetrates the hook 2, the bending section 2-2 of the hook 2 hooks the stem rope 5 wrapped by the plastic film, then the hook 2 is pulled by one hand, the hook seat block 1 is rotated clockwise 90 degrees towards the direction of the steel reinforcement framework 4 by the other hand, the stem rope 5 is elastically deformed when the hook seat block 1 is rotated, the upper surface of the hook seat block 1 and the steel reinforcement framework 4 tend to be attached when the stem rope rebounds, and the split snap ring 3 is clamped with the steel reinforcement framework 4 by the hand, so that the fixation of the stem rope of the plastic film is completed, and the purpose of fixing the plastic film is achieved. The function of the split snap ring 3 is as follows: when the force of the hook 2 is zero, the hook seat block 1 and the hook 2 are fixed.
The self-locking principle stress analysis diagram of the utility model is shown in reference to fig. 20, and during analysis, the friction coefficient fa between steel and steel, steel and plastic is 0.15-0.3, and the small value is 0.15, and the included angle alpha between the normal direction of the axial plane where the hook 2 hooks the plastic film stalk rope and the normal direction of the upper surface of the hook seat block 1 is less than or equal to 6 degrees,
in FIG. 20, F1Is the gliding force of the hook block F2For positive pressure of the hook on the hook block, F3For the pulling force to which the hook 2 is subjected, FfThe friction force of the hook seat block;
when α is 6 °, cos α is 0.105, sin α is 0.995;
F1＝F3cosα＝0.105F3；
F2＝F3sinα＝0995F3；
Ff＝faF2＝0.15×0.995F3＝0.149F3；
conclusion F1＜FfThe fixture is in equilibrium.
See fig. 19, the size of α depends on the relationship between the distance L between the center of the lower end bend and the center of the upper end bend of the hook 2, the distance L1 between the lowest point of the vertical section of the inverted U-shaped open-ended limiting groove 1-4 and the bottom surface of the hook block, the distance L2 between the vertical center line of the inverted U-shaped open-ended limiting groove 1-4 and the vertical right end surface of the hook block near one end of the limiting groove 1-4, the radial length L3 (diameter) of the steel skeleton 4, and the radius r of the stem rope. When L ≈ L1+ L3+ r, α tends to 0 °, and the self-locking effect of the fixing device is better. Wherein L2 < L1, preferably L2 ≈ 0.3L 1.
The principle and the implementation of the present invention are explained herein by using specific examples, and the above description of the embodiments is only used to help understand the method and the core idea of the present invention; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the concrete implementation and the application scope. In summary, the content of the present specification should not be construed as a limitation of the present invention.
Claims (5)
1. A self-locking fixing device for a plastic film of a greenhouse is characterized by comprising a hook seat block, a hook and an open snap ring; couple seat piece includes seat piece body, and the lower extreme of seat piece body leans on the right side to be equipped with the spacing groove, and the one end of just keeping away from the spacing groove in the top of seat piece body is fixed with the opening snap ring of opening direction perpendicular to seat piece body towards the top for press from both sides tight steel reinforcement skeleton, the couple is including being used for with seat piece body rotatable coupling's linkage segment and being used for hooking the bending segment of plastic film stalk rope, and the spacing groove is arranged in to the linkage segment of couple, and the couple can realize relative rotation between spacing groove and seat piece body.
2. The self-locking fixing device for the plastic film of the greenhouse as claimed in claim 1, wherein after the hook hooks the stem rope of the plastic film and the split snap ring clamps the reinforcement cage, an included angle α between a plane of the hook in the axial direction and a normal direction of a plane of the bottom surface of the seat block body is less than or equal to 6 °.
3. The self-locking fixing device for the plastic film of the greenhouse as claimed in claim 1, wherein the seat block body of the hook seat block comprises a first rectangular side plate and a second rectangular side plate which are arranged in parallel and at intervals and have the same structure, an angle corresponding to the lower part of the first rectangular side plate and the second rectangular side plate is respectively processed into an inclined surface, the inner sides of the bottom ends of the first rectangular side plate and the second rectangular side plate are fixed through a connecting plate which is perpendicular to the first rectangular side plate and the second rectangular side plate, limiting grooves in the shape of inverted U-shaped openings are respectively arranged at the corresponding positions of the lower ends of the first rectangular side plate and the second rectangular side plate, and the opening snap rings are fixed on the connecting plate;
the connecting plate comprises a first rectangular bottom plate body, the first rectangular bottom plate body is fixed on the inner side above a first rectangular side plate and a second rectangular side plate, one end, far away from a U-shaped open slot, of the first rectangular bottom plate body is stamped towards the inner cavities of the first rectangular side plate and the second rectangular side plate to form a bent part with a Z-shaped cross section, a through hole for mounting a screw is formed in the horizontal plane of the bent part, the open clamping ring comprises 2 first arc-shaped clamping parts which are oppositely arranged along the vertical direction and used for clamping a steel bar framework, the bottom ends of the 2 first arc-shaped clamping parts are connected through a first U-shaped fixing part which is horizontally arranged, the first U-shaped fixing part is horizontally arranged on the horizontal plane of the bent part, the screw is mounted in the through hole along the vertical direction, and the first U-shaped fixing part is;
the connecting section of the hook is a U-shaped hook body, an arc-shaped bending section is formed by bending the two free ends of the U-shaped hook body backwards, a first straight section at the bottom end of the U-shaped hook body is arranged between the first rectangular side plate and the second rectangular side plate, the bending parts at the two ends are respectively arranged in the limiting grooves in the shape of the inverted U-shaped openings on the first rectangular side plate and the second rectangular side plate, and the two first vertical sections are respectively arranged on the outer sides of the first rectangular side plate and the second rectangular side plate;
or the linkage segment of couple is the L type coupler body that the symmetry set up, and the bottom horizontal segment of 2L type coupler bodies is arranged in the spacing groove of the type of falling U opening shape on first rectangle curb plate and the second rectangle curb plate respectively, and the outside of first rectangle curb plate and second rectangle curb plate is arranged in to the second vertical segment of 2L type coupler bodies, and the top free end of 2L type coupler bodies is bent backward respectively and is formed parallel segmental arc, and the bottom of 2 segmental arc is as an organic whole through the connection of the flat section of second, forms the bending section of U type.
4. The self-locking type fixing device for the plastic film of the greenhouse as claimed in claim 3, wherein the connecting plate is a rectangular plate body, the connecting plate is fixed on the upper inner side of the first rectangular side plate and the second rectangular side plate to close the openings above the first rectangular side plate and the second rectangular side plate, the section of the open snap ring is an open C-shaped ring, and the bottom of the open C-shaped ring is fixed with the upper end surface of the connecting plate into a whole.
5. The self-locking type fixing device for the plastic film of the greenhouse as claimed in claim 3, it is characterized in that the connecting plate comprises an L-shaped bottom plate body, the L-shaped bottom plate body seals the upper parts and the left end openings of the first rectangular side plate and the second rectangular side plate, and the vertical end surface of the L-shaped bottom plate body is provided with a through hole for mounting a screw, the split snap ring comprises 2 symmetrically arranged second arc-shaped clamping parts which are integrally formed and positioned at the upper part, and a second U-shaped fixing part which is positioned at the lower part and connects the bottom ends of the second arc-shaped clamping parts, wherein the second U-shaped fixing part is tightly attached to the outer side of the vertical end surface of the L-shaped bottom plate body along the vertical direction, and the opening direction among the 2 second arc-shaped clamping parts faces to the upper part of the horizontal end surface of the L-shaped bottom plate body, and screws are arranged in the through holes along the horizontal direction, and the second U-shaped fixing parts are fixed by adopting nuts to be screwed down.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021682247.3U CN213174194U (en) | 2020-08-13 | 2020-08-13 | Self-locking fixing device for plastic film of greenhouse |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021682247.3U CN213174194U (en) | 2020-08-13 | 2020-08-13 | Self-locking fixing device for plastic film of greenhouse |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213174194U true CN213174194U (en) | 2021-05-11 |
Family
ID=75800852
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021682247.3U Active CN213174194U (en) | 2020-08-13 | 2020-08-13 | Self-locking fixing device for plastic film of greenhouse |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213174194U (en) |
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2020
- 2020-08-13 CN CN202021682247.3U patent/CN213174194U/en active Active
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