Device for assisting visual inspection of object size

Abstract

The utility model discloses a device for assisting in visual inspection of object size, which belongs to the technical field of ore measurement, solves the problem that ore cannot be accurately measured, so that ore exceeds the standard, and a draw shaft is blocked, and comprises a hollow circular truncated cone-shaped shell, an eyepiece is arranged at the upper bottom of the shell, an objective lens is arranged at the lower bottom of the shell, and a size adjusting device is arranged on the objective lens; the size adjusting device comprises a base, a size scale strip is arranged on one side of the base, a threaded shaft and a gear shaft are arranged in the base, transmission gears are arranged at the upper end and the lower end of the gear shaft respectively, the threaded section of the threaded shaft is rotationally connected with the transmission gear at one end of the gear shaft, and single-face racks are rotationally connected to the two sides of the transmission gear at the other end of the gear shaft respectively. Pointers are respectively arranged on the single-sided racks. According to the utility model, an operator can be assisted to quickly and visually inspect whether the size of the large ore block is within a specified range, so that the well entering rate of the large ore block exceeding the standard is reduced, the size of the ore entering the well is more accurately controlled, and the production efficiency is improved.

Description

Technical Field

[0001] This utility model belongs to the field of ore measurement technology, specifically relating to a device for assisting in visually estimating the size of objects. Background Technology

[0002] In recent years, with the increasing service life of ore passes, the accumulation of dead ore at the bottom of the passes has become severe and cannot be cleaned in a timely manner. This often leads to blockages caused by oversized ore pieces slightly larger than the specified size. Therefore, it is necessary to strictly control the size of the ore entering the pass to reduce the frequency of blockages. Controlling the entry of oversized ore pieces into the pass has always been a challenge for frontline production technicians. Although there are certain standards, there is a lack of a unified measurement scale. Individual assessments vary, and visual judgments of the same object can differ from person to person. Consequently, oversized ore pieces frequently enter the pass, causing blockages and slowing down production.

[0003] Currently, the common methods for dealing with blocked ore passes are for workers to use high-pressure air to blow it out from the bottom of the pass, to use long poles to tamp it down, or to directly use blasting. Regardless of the method, there are high safety risks, such as dust, falls from heights, poisoning from blasting fumes, and loose rocks. Therefore, the most direct way to reduce these safety risks is to address the problem at its source instead of using such methods. Thus, preventing large pieces of substandard ore from entering the mine is imperative. Utility Model Content

[0004] The purpose of this invention is to provide a device to assist in visually estimating the size of objects, in order to solve the problem of ore exceeding the standard and causing blockage of the ore pass due to inaccurate ore measurement.

[0005] The technical solution of this utility model is: a device for assisting visual estimation of object size, comprising a hollow frustum-shaped shell, an eyepiece provided on the upper bottom of the shell, an eyepiece center reference ring provided on the eyepiece, an objective lens provided on the lower bottom of the shell, and a size adjustment device provided on the objective lens;

[0006] The size adjustment device includes a base with a size scale bar on one side, which is located in the diameter direction of the objective lens. The base contains a threaded shaft and a gear shaft. The gear shaft has transmission gears at its upper and lower ends. The threaded section of the threaded shaft is rotatably connected to the transmission gear at one end of the gear shaft. The transmission gear at the other end of the gear shaft is rotatably connected to two single-sided racks on both sides. Each single-sided rack has a pointer pointing towards the size scale bar.

[0007] As a further improvement of this utility model, a threaded shaft limiting post is provided at one end of the threaded shaft inside the base.

[0008] As a further improvement of this utility model, one end of the threaded shaft extends out of the side wall of the base, and the extended end is provided with a scale adjustment knob.

[0009] As a further improvement of this utility model, a rack limiting post is provided between the single-sided rack and the base.

[0010] As a further improvement of this utility model, a rack limiting plate is provided on the single-sided rack.

[0011] As a further improvement of this utility model, a handle is provided on the outer wall of the shell.

[0012] The beneficial effects of this utility model are as follows: This utility model facilitates visual inspection to determine whether the size of a target object at a fixed distance is within the specified size range. For example, when mines use vertical transportation via ore passes, the size of the ore entering the mine is often controlled. This utility model allows for visual inspection of the size of large ore pieces that appear during the production process, thereby reducing the rate of large ore pieces exceeding the standard entering the mine. Using this utility model can assist operators in quickly visually inspecting whether the size of large ore pieces is within the specified range, allowing for more accurate control of the size of the ore entering the mine and improving production efficiency.

[0013] This invention can also improve the accuracy of electric vehicle operators in judging the size of oversized pieces. Using this invention, it is possible to quickly and accurately determine whether a piece is oversized, thereby improving the operating efficiency of electric vehicle operators.

[0014] This utility model is compact in appearance, simple in principle, and easy to operate. When used on the same device, it only requires calculating and adjusting the width between the two pointers on the objective lens scale once. It can be placed next to the driver for use at any time.

[0015] This invention has a wide range of applications. It can be used not only to visually estimate the size of large ore blocks, but also to assist in visually estimating the height, width, and distance of vertical objects. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a structural diagram of the size adjustment device in this utility model.

[0018] In the diagram: 1-House; 2-Eyepiece; 21-Eyepiece center reference ring; 3-Objective lens; 4-Handle; 5-Base; 51-Threaded shaft; 52-Gear shaft; 53-Transmission gear; 54-Single-sided rack; 55-Pointer; 56-Dimension scale bar; 57-Scale adjustment knob; 58-Threaded shaft limit post; 59-Rack limit post; 60-Rack limit plate. Detailed Implementation

[0019] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0020] like Figures 1-2As shown, a device for assisting visual estimation of object size includes a hollow frustum-shaped shell 1, an eyepiece 2 is provided on the upper bottom of the shell 1, an eyepiece center reference ring 21 is provided on the eyepiece 2, an objective lens 3 is provided on the lower bottom of the shell 1, and a size adjustment device is provided on the objective lens 3.

[0021] The size adjustment device includes a base 5, with a size scale bar 56 on one side of the base 5. The size scale bar 56 is located in the diameter direction of the objective lens 3. The base 5 contains a threaded shaft 51 and a gear shaft 52. The gear shaft 52 has transmission gears 53 at its upper and lower ends, respectively. The threaded section of the threaded shaft 51 is rotatably connected to the transmission gear 53 at one end of the gear shaft 52. The transmission gear 53 at the other end of the gear shaft 52 is rotatably connected to two sides of a single-sided rack 54. The single-sided rack 54 is equipped with pointers 55, which point towards the size scale bar 56.

[0022] A threaded shaft 51 has a threaded shaft limiting post 58 at one end inside the base 5. One end of the threaded shaft 51 extends out of the side wall of the base 5, and the extended end has a scale adjustment knob 57. A rack limiting post 59 is provided between the single-sided rack 54 and the base 5. A rack limiting plate 60 is provided on the single-sided rack 54. A handle 4 is provided on the outer wall of the housing 1.

[0023] The design principle of this utility model is based on the isosceles triangle principle among similar triangles:

[0024] Side length ratio: In similar triangles, the ratio of the lengths of corresponding sides is equal to the ratio of the lengths of corresponding sides. That is, if △ABC ~ △DEF, then AB / DE = BC / EF = AC / DF.

[0025] The ratio of the heights of similar triangles is equal to the ratio of the lengths of the heights of the corresponding sides. That is, if △ABC ~ △DEF, then hA / hD = hB / hE = hC / hF, where hA, hB, and hC represent the three heights of △ABC, and hD, hE, and hF represent the three heights of △DEF.

[0026] The principle used in the design of this utility model is the isosceles triangle in similar triangles. Given the distance between eyepiece 2 and objective lens 3, the distance between eyepiece 2 and target object (i.e. the distance from the driver's eye to the bucket during operation), and the specified size of the object to be measured, the width that the specified size of the object to be measured needs to be set on objective lens 3 can be calculated based on the ratio relationship. When observing, if the size of the target object exceeds the width set on objective lens 3, it is considered an oversized object.

[0027] After receiving this utility model, each electric shovel operator first needs to measure the vertical height between the driver's line of sight and the ground, then measure the horizontal distance between the driver's line of sight and the target object (bucket), calculate the straight-line distance between the driver's line of sight and the target object using the Pythagorean theorem, and calculate the width of the target object's specified size on the dimension scale bar 56 in the diameter direction of the objective lens 3 based on the straight-line distance and the law of similar isosceles triangles.

[0028] By rotating the scale adjustment knob 57, the threaded shaft 51 is rotated. The threaded section of the threaded shaft 51 drives the gear shaft 52 to rotate via the transmission gear 53. The transmission gear 53 at the other end of the gear shaft 52 drives the two single-sided racks 54 to rotate, thereby causing the pointer 55 on the single-sided racks 54 to indicate the corresponding scale position on the size scale bar 56. When large pieces of ore appear during the production process, the bucket can be placed on one side of the large piece. Then, by holding the handle 4 and using this invention, the large piece of ore can be observed through the eyepiece 2 to see if it is within the range indicated by the two pointers 55 of the objective lens 3. If it exceeds the range, it is considered an oversized large piece.

[0029] Since the implementation of this invention, operators have gained greater confidence and accuracy in judging the size of large ore pieces, and the control over oversized ore pieces has become more refined. This avoids the indiscriminate handling of large pieces, such as picking out pieces regardless of whether they are oversized or not, which would increase the workload of secondary crushing and recycling. Furthermore, there have been no more blockages in the ore chute, truly resolving the issue of ore chute blockage and the safety risks associated with it at its source.

Claims

1. A device for assisting in visually estimating the size of an object, characterized in that: It includes a hollow frustum-shaped shell (1), an eyepiece (2) is provided on the upper bottom of the shell (1), an eyepiece center reference ring (21) is provided on the eyepiece (2), an objective lens (3) is provided on the lower bottom of the shell (1), and a size adjustment device is provided on the objective lens (3); The size adjustment device includes a base (5), one side of which is provided with a size scale bar (56), the size scale bar (56) is located in the diameter direction of the objective lens (3), the base (5) is provided with a threaded shaft (51) and a gear shaft (52), the upper and lower ends of the gear shaft (52) are respectively provided with transmission gears (53), the threaded section of the threaded shaft (51) is rotatably connected to the transmission gear (53) at one end of the gear shaft (52), and the transmission gear (53) at the other end of the gear shaft (52) is rotatably connected to a single-sided rack (54) on both sides, and a pointer (55) is provided on the single-sided rack (54), the pointer (55) is facing the size scale bar (56).

2. The device for assisting in visually estimating the size of an object according to claim 1, characterized in that: The threaded shaft (51) has a threaded shaft limiting post (58) at one end inside the base (5).

3. The device for assisting in visually estimating the size of an object according to claim 2, characterized in that: One end of the threaded shaft (51) extends out of the side wall of the base (5), and the extended end is provided with a scale adjustment knob (57).

4. The device for assisting in visually estimating the size of an object according to claim 3, characterized in that: A rack limiting post (59) is provided between the single-sided rack (54) and the base (5).

5. The device for assisting in visually estimating the size of an object according to claim 4, characterized in that: The single-sided rack (54) is provided with a rack limiting plate (60).

6. A device for assisting in visually estimating the size of an object according to any one of claims 1-5, characterized in that: The outer wall of the housing (1) is provided with a handle (4).

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