Variable-area type multipurpose oncomelania investigation device

Abstract

The utility model discloses a variable-area type multipurpose oncomelania investigation device. Comprising a basic frame unit which comprises a first diagonal supporting rod, a second diagonal supporting rod, a supporting rod hinge shaft and an elastic take-up and pay-off frame; the rubber band is adopted as the elastic take-up and pay-off frame to replace a traditional hard frame, the two diagonal supporting rods which are hinged to each other are hinged to form the oncomelania investigation frame with the variable area, and the problem that in actual work, due to the fact that the boundary of a detected environment is smaller than the border of the oncomelania investigation frame, the oncomelania investigation frame is damaged is effectively solved. Therefore, the technical problem that the oncomelania investigation frame which cannot be folded and deformed brings great inconvenience to detection personnel is solved. In addition, according to the scheme, the deformation freedom degree is only the opening angle of the first diagonal supporting rod and the second diagonal supporting rod, the redundant folding freedom degree of an oncomelania investigation frame in the prior art is omitted, the operation convenience is improved, and on the basis that the oncomelania investigation requirement is met, the oncomelania investigation frame is more convenient to use. And measurement and calculation of width, depth, area and oncomelania shape and size in narrow and small environments such as channels in oncomelania investigation sites can be realized.

Description

Technical Field

[0001] The embodiments of the present utility model belong to the technical field of oncomelania hupensis investigation devices, and more specifically, relate to a variable-area multi-purpose oncomelania hupensis investigation device. Background Art

[0002] Schistosomiasis is a zoonotic parasitic disease that seriously endangers people's health and affects economic development. In China, schistosomiasis is prevalent in twelve provinces, municipalities, and autonomous regions on both sides of the Yangtze River and to its south, with a prevalence history of more than 2,100 years. As the only intermediate host of schistosomiasis, controlling the quantity and distribution of oncomelania hupensis is the key to preventing the spread of schistosomiasis. Oncomelania hupensis belongs to mollusks, is amphibious, and mostly breeds in the water lines of rivers and lakes beaches, irrigation ditches in inland mountainous areas, or shallow riverbanks with sufficient water, overgrown weeds, and humid and shaded environments. The water plants are lush and the soil is fertile along the river and lake beaches, showing the characteristics of being dry in winter and wet in summer, which are the main breeding grounds of oncomelania hupensis. Timely and accurately finding out and mastering the distribution dynamics and snail density in the epidemic area is an extremely important basic work in the on-site prevention and control of schistosomiasis and also the scientific basis for doing a good job in snail control. Usually, a simple oncomelania hupensis investigation frame is used to assist density investigation on-site, which is extremely inconvenient. Therefore, it is extremely necessary to develop a convenient and durable oncomelania hupensis investigation frame for the risk monitoring and prevention and control of schistosomiasis.

[0003] To solve the above technical problems, Chinese utility model patent CN203087306U discloses a on-site oncomelania hupensis investigation frame, including a left frame and a right frame. Fixed bolts are provided at each corner of the two ends of the left frame and the right frame, and a folding screw is provided at the connection between the left frame and the right frame. Retractable positioning feet are provided at each corner of the left frame and the right frame. The beneficial effects of the present utility model are as follows: The on-site oncomelania hupensis investigation frame provided by the present utility model has retractable positioning feet at the corners, so that the investigation frame will not shift. It has the advantages of being made of plastic material, not rusting, being easy to operate, improving accuracy, being foldable for easy carrying and storage, and being safe and environmentally friendly. In addition, Chinese utility model CN206851749U discloses a folding oncomelania hupensis investigation frame, including: a square frame body, the square frame body includes a first connecting rod, a second connecting rod, a third connecting rod, and a fourth connecting rod that are sequentially movably connected, wherein the first connecting rod and the third connecting rod are arranged in parallel, and the second connecting rod and the fourth connecting rod are arranged in parallel; and folding mechanisms respectively arranged in the middle areas of the first connecting rod, the second connecting rod, the third connecting rod, and the fourth connecting rod. This folding oncomelania hupensis investigation frame has the advantages of being convenient to fold, convenient to carry, and preventing rust.

[0004] The above-mentioned patented technologies have all made detailed designs for the oncomelania survey frame, pushing the production of this device towards standardization. However, there are still the following technical problems or areas for improvement: (1) In the patented solution CN203087306U, the problem of displacement of the oncomelania survey frame was solved. However, in actual work, there may be a problem where the boundary of the measured environment is smaller than the frame of the oncomelania survey frame. Since the oncomelania survey frame that cannot be folded and deformed brings great inconvenience to the inspectors; (2) Although the patented solution CN206851749U achieved the technical effect of frame folding and deformation, there is redundancy in the folding freedom of the oncomelania survey frame. The excessive folding freedom not only fails to improve the usability of the oncomelania survey frame, but also increases the cumbersome operation steps for the operator during use. In addition, the extra rods also increase the production cost and quality, which is not conducive to portability; (3) For the variable oncomelania survey frame, determining its area is an essential step in the measurement process. A fast and simple auxiliary method for determining the area size of the deformed oncomelania survey frame is the key to improving the detection work efficiency, but no effective solutions for this are disclosed in the above-mentioned patented technologies. Utility Model Content

[0005] In view of the above defects or improvement requirements of the prior art, the present utility model provides a variable-area multi-purpose oncomelania survey device. By using a rubber band as an elastic retractable wire frame to replace the traditional rigid frame, and hinging two mutually articulated diagonal struts, a variable-area oncomelania survey frame is formed, effectively solving the technical problem that in actual work, due to the measured environment being smaller than the frame of the oncomelania survey frame, the oncomelania survey frame that cannot be folded and deformed brings great inconvenience to the inspectors. In addition, the deformation freedom of this solution is only the opening angle between the first diagonal strut and the second diagonal strut, which not only eliminates the redundant folding freedom of the oncomelania survey frame in the prior art and improves the convenience of operation, but also on the basis of meeting the oncomelania survey, the oncomelania survey frame that is completely combined into rods can also be used to measure and calculate the width, depth, area, and the morphological size of oncomelania in the field using the scale lines on the struts, and can also be used as a climbing tool to assist oncomelania survey personnel to climb slopes and cross ditches during on-site work.

[0006] To achieve the above object, a variable-area multi-purpose oncomelania survey device includes:

[0007] A basic frame unit, which includes a first diagonal strut with a first connection hole opened in the middle, a second diagonal strut with a second connection hole opened in the middle, a strut hinge shaft that rotatably connects the two struts through the first connection hole and the second connection hole, a detachable lock assembly arranged near the ends of the first diagonal strut and the second diagonal strut, and an elastic retractable wire frame that is installed in a surrounding manner on the four ends of the first diagonal strut and the second diagonal strut through the detachable lock assembly; scale lines are engraved on the surfaces of the first diagonal strut and the second diagonal strut;

[0008] An opening parameter indicating unit fixedly connected to the center of the first diagonal strut and used to display the opening angle and opening area.

[0009] Preferably, the elastic wire winding frame is a rubber band.

[0010] Preferably, the opening parameter indicating unit includes: a dial, and a dial positioning unit for keeping the dial fixedly connected to the first diagonal strut.

[0011] Preferably, the dial includes:

[0012] A central through hole provided at the center of the circle and clamped with the hinge shaft of the strut, and angle scales and area scales corresponding one by one to the opening angles of the first diagonal strut and the second diagonal strut are engraved on the periphery.

[0013] Preferably, the dial positioning unit includes:

[0014] A pair of side mounting holes near the center of the first diagonal strut and symmetrically arranged on both sides of the strut, a positioning screw fixed to the bottom of the dial and penetrating through the side mounting holes, and a positioning nut threadedly connected to the positioning screw.

[0015] Preferably, the horizontal distance between the two side mounting holes is the same as the width of the second diagonal strut to ensure that the maximum opening angle between the first diagonal strut and the second diagonal strut is limited to 90°.

[0016] Preferably, the first diagonal strut and the second diagonal strut are made of stainless steel.

[0017] Preferably, the distance between the detachable lock components near both ends of the first diagonal strut is 46.7 cm.

[0018] Generally speaking, compared with the prior art by the above technical solutions conceived by the present utility model, the following beneficial effects can be achieved:

[0019] (1) A variable - area multi - purpose oncomelania survey device of the present utility model uses a rubber band as an elastic wire - winding frame to replace the traditional rigid frame. It is composed of two diagonally hinged struts, forming a survey frame with variable area, effectively solving the technical problem that in actual work, due to the measured environment being smaller than the frame border of the oncomelania survey frame, the non - foldable and non - deformable survey frame brings great inconvenience to the inspectors. In addition, the degree of freedom of deformation of this solution is only the opening angle between the first diagonal strut and the second diagonal strut. It not only eliminates the redundant folding degrees of freedom of the oncomelania survey frame in the prior art and improves the convenience of operation, but also on the basis of meeting oncomelania survey requirements, and the oncomelania survey frame completely merged into rods can also be used to measure and calculate the width, depth, area of narrow environments such as ditches at the oncomelania survey site, and the shape and size of oncomelania on - site by using the scale lines on the struts. It can also be used as a climbing tool to assist oncomelania surveyors in climbing slopes and going down slopes during on - site work.

[0020] (2) For a variable - area multi - purpose oncomelania survey device of the present utility model, since the lengths L of the first diagonal strut and the second diagonal strut are equal and fixed, the border area corresponding to the expansion angle a of the two struts is also a fixed value. The calculation algorithm for the angle a and the area S is: S = L 2 *sin(a / 2)*cos(a / 2). Based on this theory, a scale disk with one - to - one correspondence between angles and border areas is set on the scale disk. During use, since the scale disk is fixedly connected to the first diagonal strut, when the second diagonal strut is rotated, the position of the second diagonal strut can be reflected on the scale lines of the scale disk, thereby obtaining the angle and the expanded area. Through the pre - calculation and design of the scale disk, the cumbersome operation of multiple manual calculations during use is eliminated, greatly improving the convenience of operation of the oncomelania survey frame and the efficiency of survey work. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a semi - expanded state diagram of a variable - area multi - purpose oncomelania survey device according to an embodiment of the present utility model;

[0022] Figure 2 It is a fully - expanded state diagram of a variable - area multi - purpose oncomelania survey device according to an embodiment of the present utility model;

[0023] Figure 3 It is a structural schematic diagram of the first diagonal strut of a variable - area multi - purpose oncomelania survey device according to an embodiment of the present utility model;

[0024] Figure 4 It is a structural schematic diagram of the second diagonal strut of a variable - area multi - purpose oncomelania survey device according to an embodiment of the present utility model;

[0025] Figure 5Schematic cross-sectional view of the connection structure of the opening parameter indicating unit of a variable-area multi-purpose oncomelania survey device according to an embodiment of the present invention;

[0026] Figure 6 Schematic diagram of the scale disk structure of a variable-area multi-purpose oncomelania survey device according to an embodiment of the present invention;

[0027] Figure 7 Side view of the opening parameter indicating unit of a variable-area multi-purpose oncomelania survey device according to an embodiment of the present invention;

[0028] Figure 8 Bottom view of the opening parameter indicating unit of a variable-area multi-purpose oncomelania survey device according to an embodiment of the present invention;

[0029] In all the drawings, the same reference numerals represent the same technical features, specifically: 1 - basic frame unit, 110 - first diagonal brace, 111 - first scale line, 112 - first connection hole, 120 - second diagonal brace, 121 - second scale line, 122 - second connection hole, 130 - elastic wire winding frame, 140 - detachable locking component, 150 - brace hinge shaft, 2 - opening parameter indicating unit, 210 - scale disk, 211 - angular scale, 212 - area scale, 213 - central through hole, 220 - disk positioning unit, 221 - positioning screw, 222 - side mounting hole, 223 - positioning nut. Detailed implementation manners

[0030] In the description of the present application, it should be understood that the orientation or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention.

[0031] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality" means two or more unless otherwise specifically defined.

[0032] In this application, unless otherwise clearly defined and limited, terms such as "installation", "connection", "linkage", "fixation", etc. shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0033] In order to make the objectives, technical solutions and advantages of the present utility model clearer and more understandable, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model. In addition, the technical features involved in the various embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.

[0034] As Figures 1 to 8 shown, in an embodiment of the present utility model, the variable-area multi-purpose oncomelania survey device includes:

[0035] A basic frame unit 1, which includes a first diagonal strut 110 with a first connection hole 112 formed in the middle, a second diagonal strut 120 with a second connection hole 122 formed in the middle, a strut hinge shaft 150 that rotatably connects the two struts through the first connection hole 112 and the second connection hole 122, a detachable lock assembly 140 disposed near the ends of the first diagonal strut 110 and the second diagonal strut 120, and an elastic retractable wire frame 130 that is surrounded and installed on the four ends of the first diagonal strut 110 and the second diagonal strut 120 through the detachable lock assembly 140; scale lines are engraved on the surfaces of the first diagonal strut 110 and the second diagonal strut 120;

[0036] An opening parameter indicating unit 2 that is fixedly connected to the center of the first diagonal strut 110 and is used to display the opening angle and the opening area.

[0037] As Figure 1 shown, in an embodiment of the present utility model, the elastic retractable wire frame 130 is a rubber band.

[0038] In the embodiment of the present invention, by using a rubber band as an elastic wire-reeling frame to replace the traditional rigid frame and hinging two diagonal struts to form a snail survey frame with variable area, the technical problem that in actual work, due to the measured environment being smaller than the border of the snail survey frame, the snail survey frame that cannot be folded and deformed brings great inconvenience to the testers is effectively solved. In addition, the degree of freedom of deformation of this solution is only the opening angle between the first diagonal strut and the second diagonal strut. It not only eliminates the redundant folding degrees of freedom of the snail survey frame in the prior art and improves the convenience of operation, but also on the basis of meeting the snail survey, the snail survey frame that is completely combined into rods can use the scale lines on the struts to measure and calculate the width, depth, area of narrow environments such as ditches at the snail survey site, and the shape and size of on-site snails, and can also be used as a climbing tool to assist snail survey personnel to climb slopes and cross ditches during on-site work.

[0039] As Figure 1 , Figures 5 to 8 shown, in the embodiment of the present utility model, the opening parameter indicating unit 2 includes a scale disk 210 and a disk positioning unit 220 for fixedly connecting the scale disk 210 with the first diagonal strut 110.

[0040] As Figure 6 shown, in the embodiment of the present utility model, the scale disk 210 includes:

[0041] A central through hole 213 provided at the center of the circle and clamped with the strut hinge shaft 150, and angle scales 211 and area scales 212 corresponding one by one to the opening angles between the first diagonal strut 110 and the second diagonal strut 120 are engraved on the periphery.

[0042] As Figure 3 , Figure 5 and Figure 7 shown, in the embodiment of the present utility model, the disk positioning unit 220 includes:

[0043] A pair of side mounting holes 222 symmetrically arranged at the center of the first diagonal strut 110 and on both sides of the strut, a positioning screw 221 fixed to the bottom of the scale disk 210 and penetrating through the side mounting holes 222, and a positioning nut 223 threadedly connected with the positioning screw 221.

[0044] In the embodiment of the present utility model, since the lengths L of the first diagonal strut and the second diagonal strut are equal and fixed, the border area corresponding to the opening angle a of the two struts is also a fixed value. The calculation algorithm for the angle a and the area S is: S = L 2*sin(a / 2)*cos(a / 2). Based on this theory, a scale disk with corresponding scales for angles and border areas is provided on the scale disk 210. During use, since the scale disk 210 is fixedly connected to the first diagonal strut, when the second diagonal strut is rotated, the position of the second diagonal strut can be reflected on the scale lines of the scale disk, thereby obtaining the angle and the deployed area. Through the calculation and design of the scale disk in the early stage, the cumbersome operation of multiple manual calculations during use is omitted, greatly improving the operation convenience of the oncomelania survey frame and the survey work efficiency.

[0045] As Figure 3 shown, in the embodiment of the present utility model, the horizontal distance between the two side mounting holes 222 is the same as the width of the second diagonal strut 120, so as to ensure that the maximum expansion angle between the first diagonal strut 110 and the second diagonal strut 120 is limited to 90°.

[0046] In the embodiment of the present utility model, the first diagonal strut 110 and the second diagonal strut 120 are made of stainless steel.

[0047] In the embodiment of the present utility model, the distance between the detachable lock components 140 near both ends of the first diagonal strut 110 is 46.7 cm. Thus, it is ensured that the maximum deployed area is 0.1 square meters, which is the standard area of the oncomelania survey frame.

[0048] The above are only the preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, and improvements made within the spirit and principles of the present application shall be included in the protection scope of the present application. The above is only the preferred implementation manner of the present application. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the technical principle of the present application, several improvements and variations can still be made, and these improvements and variations should also be regarded as the protection scope of the present application.

Claims

1. A variable-area multi-purpose oncomelania survey device, characterized in that Including: A basic frame unit (1), which includes a first diagonal brace (110) with a first connection hole (112) formed in the middle, a second diagonal brace (120) with a second connection hole (122) formed in the middle, a brace hinge shaft (150) that rotatably connects the two braces through the first connection hole (112) and the second connection hole (122), a detachable locking component (140) arranged near the ends of the first diagonal brace (110) and the second diagonal brace (120), and an elastic wire winding frame (130) that is surrounded and installed on the four ends of the first diagonal brace (110) and the second diagonal brace (120) through the detachable locking component (140); scale lines are engraved on the surfaces of the first diagonal brace (110) and the second diagonal brace (120). An opening parameter indicating unit (2) fixedly connected to the center of the first diagonal brace (110) and used to display the opening angle and opening area.

2. The variable-area multi-purpose oncomelania survey device according to claim 1, wherein: The elastic wire winding frame (130) is a rubber band.

3. The variable-area multi-purpose oncomelania survey device according to claim 1, characterized in that, The opening parameter indicating unit (2) includes: a scale dial (210), and a dial positioning unit (220) for keeping the scale dial (210) fixedly connected to the first diagonal brace (110).

4. The variable-area multi-purpose oncomelania survey device according to claim 3, characterized in that, The scale dial (210) includes: A central through hole (213) arranged at the center of the circle and clamped with the brace hinge shaft (150), and angle scales (211) and area scales (212) corresponding one by one to the opening angles of the first diagonal brace (110) and the second diagonal brace (120) are engraved on the periphery.

5. A variable-area multi-purpose oncomelania survey device according to claim 4, characterized in that, The dial positioning unit (220) includes: A pair of side mounting holes (222) that are close to the center of the first diagonal brace (110) and are symmetrically arranged on both sides of the brace at the center, a positioning screw (221) fixed to the bottom of the scale dial (210) and penetratingly connected to the side mounting holes (222), and a positioning nut (223) threadedly connected to the positioning screw (221).

6. The variable-area multi-purpose oncomelania survey device according to claim 5, characterized in that, The horizontal distance between the two side mounting holes (222) is the same as the width of the second diagonal brace (120) to ensure that the maximum opening angle of the first diagonal brace (110) and the second diagonal brace (120) is limited to 90°.

7. A variable-area multi-purpose oncomelania survey device according to any one of claims 1 to 6, characterized in that: The first diagonal brace (110) and the second diagonal brace (120) are made of stainless steel.

8. A variable-area multi-purpose oncomelania survey device according to claim 7, characterized in that: The distance between the detachable locking components (140) near the two ends of the first diagonal brace (110) is 46.7 cm.

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