A fish counter

Abstract

The utility model discloses a kind of fish gauges, including fish gauge tank, the fish gauge tank is cuboid and is made of transparent material, the inside of fish gauge tank is equipped with V-shaped groove, the bottom of V-shaped groove is circular arc;The side surface of fish gauge tank is respectively arranged with length scale and height scale along its length direction and height direction;The upper end of height scale is equipped with the sliding block of length scale sliding connection;The upper end of sliding block is connected with metal cross bar, the lower of metal cross bar is equipped with the positioning baffle in V-shaped groove, the size shape of positioning baffle is compatible with V-shaped groove.This fish gauge of the utility model is simple structure, easy to operate, can be water operation at the same time without direct contact with measuring fish, avoid measuring fish to be injured, to improve the survival rate of fish.

Description

Technical Field

[0001] This utility model relates to the technical field of fish handling facilities, and in particular to a fish measuring device. Background Technology

[0002] During the operation of fish passage facilities on high dams in water conservancy projects, the fish caught through the facilities must first be sorted. This includes collecting biological information about the fish, such as their total body length, body length, body height, and caudal peduncle height. These biological morphological indicators are essential basic data for the operation and management of fish passage facilities, and they help researchers provide basic analytical data on the fish collection effect, fish passage effect, and protection effect of the facilities.

[0003] Currently, when fish sorting facilities complete the sorting process, they usually need to use a fish measuring board with a scale to measure the fish's body length, total length, and body height. During the operation, staff need to hold the fish to be measured with both hands to read the relevant data.

[0004] During live measurement, the fish need to be taken out of the water and there is direct physical contact between the staff and the fish being measured. The fish often rolls over during the measurement, making it difficult for the staff to accurately control the force. This can easily lead to injury to the fish and significantly reduce the survival rate of the fish. Utility Model Content

[0005] In order to overcome the shortcomings of the existing technology, the technical problem to be solved by this utility model is to provide a fish measuring device with simple structure and convenient operation. It can be used in water without direct contact with the fish being measured, thus avoiding injury to the fish and improving the survival rate of the fish.

[0006] To achieve the above objectives, this utility model provides a fish measuring device, including a fish measuring trough, which is rectangular in shape and made of transparent material. The fish measuring trough has a V-shaped groove inside, and the bottom of the V-shaped groove is arc-shaped. A length scale and a height scale are arranged on one side of the fish measuring trough along its length and height directions, respectively.

[0007] Preferably, the upper end of the height scale is provided with a sliding block that is slidably connected to the length scale.

[0008] Furthermore, a metal crossbar is connected to the upper end of the sliding block, and a positioning baffle is provided below the metal crossbar in the V-shaped groove. The size and shape of the positioning baffle are adapted to the V-shaped groove.

[0009] Preferably, the positioning baffle is provided with water filter holes.

[0010] Compared with the prior art, the beneficial effects of the fish measuring device of this utility model are as follows: 1. The fish measuring device of this utility model has a simple structure and is easy to operate. It can be used in water without direct contact with the fish being measured to complete the measurement work.

[0011] 2. To address the issue of fish being handled in water during live measurement, and to prevent direct physical contact between staff and fish, thus avoiding injury to the fish and improving their survival rate. Attached Figure Description

[0012] To more clearly illustrate the technical solution of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a front view of the fish measuring device of this utility model; Figure 2 This is a side view of the fish measuring device of this utility model.

[0014] In the diagram, 1 is the fish tank; 2 is the length ruler; 3 is the sliding block; 4 is the positioning baffle; and 5 is the height ruler. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] See below. Figures 1-2 The fish measuring device of this utility model will be described in detail.

[0017] The fish measuring device of this utility model includes a fish measuring trough 1 and a ruler. The fish measuring trough 1 is rectangular and made of transparent material. The interior of the fish measuring trough 1 has a V-shaped groove, and the bottom of the V-shaped groove is arc-shaped.

[0018] The scale includes a length scale 2 and a height scale 5, which are located on one side of the fish measuring tank 1 and arranged along its length and height directions.

[0019] Before sorting and measuring the fish, a certain amount of water can be injected into the V-shaped groove of the fish measuring trough 1. Then, the target fish is placed in the V-shaped groove, with the sides and bottom of the target fish's body fitting snugly against the V-shaped groove of the fish measuring trough 1 to prevent the target fish from swaying and affecting data reading. The length scale 2 and height scale 5 corresponding to the target fish are observed through the fish measuring trough 1 to read the length and height data.

[0020] Furthermore, the upper end of the height scale 5 is provided with a sliding block 3 that is slidably connected to the length scale 2. The sliding block 3 slides in the horizontal direction of the length scale 2. After the target fish is placed in the V-shaped groove, it slides on the length scale 2 via the sliding block 3 until it stops at the tail end or head end of the fish. At this time, the data reading is more accurate and convenient, and the accuracy of the reading will not be affected by water or water mist on the inner wall of the fish measuring tank 1.

[0021] Additionally, a metal crossbar is connected to the upper end of the sliding block 3, and a positioning baffle 4 is located below the metal crossbar within a V-shaped groove. The positioning baffle 4 has water-filtering holes, and its size and shape are adapted to the V-shaped groove. After the target fish is placed in the V-shaped groove, it slides along the length scale 2 via the sliding block 3 until it stops at the tail or head end of the fish. The positioning baffle 4, located below the metal crossbar, is connected to the upper end of the sliding block 3 to ensure that the target fish does not move back and forth within the V-shaped groove, thus affecting data reading. The positioning baffle 4 has evenly distributed water-filtering holes, which reduces water resistance during its back-and-forth movement.

[0022] The above description is only a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any transformations or substitutions that can be understood by those skilled in the art within the technical scope disclosed in this utility model should be included within the scope of this utility model.

Claims

1. A fish measuring device, comprising a fish measuring trough (1), characterized in that: The fish measuring tank (1) is rectangular and made of transparent material. The inside of the fish measuring tank (1) is provided with a V-shaped groove, and the bottom of the V-shaped groove is arc-shaped. The fish tank (1) has a length scale (2) and a height scale (5) arranged on one side along its length and height directions, respectively.

2. The fish measuring device according to claim 1, characterized in that, The upper end of the height scale (5) is provided with a sliding block (3) that is slidably connected to the length scale (2).

3. The fish measuring device according to claim 2, characterized in that, The upper end of the sliding block (3) is connected to a metal crossbar, and a positioning baffle (4) located in the V-shaped groove is provided below the metal crossbar. The size and shape of the positioning baffle (4) are adapted to the V-shaped groove.

4. The fish measuring device according to claim 3, characterized in that, The positioning baffle (4) is provided with a water filter hole.

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