Illuminometer convenient to use in tunnel

Abstract

The utility model relates to the technical field of tunnel light brightness measurement, in particular to a tunnel illuminometer convenient to use, which comprises a first limiting tube, a second limiting tube and a third limiting tube which are vertically placed and sequentially connected end to end, and one side of each of the first limiting tube, the second limiting tube and the third limiting tube is provided with a limiting groove. The utility model has the advantages that the first limiting pipe, the second limiting pipe and the third limiting pipe are combined into a long cylindrical structure, the three supporting pipes are connected end to end and are arranged in the first limiting pipe, the second limiting pipe and the third limiting pipe, and the spool roll is arranged at the bottom end of the first limiting pipe and is arranged at the bottom end of the third limiting pipe. A connecting rope wound on the upper portion of the illuminometer body bypasses a roller and is fixedly connected with one side of the mounting seat, so that the operating handle is rotated to drive the spool roll to rotate and drive the three supporting pipes to move upwards, the relative height of the illuminometer body is increased, the illumination intensity of the tunnel haunch position is conveniently measured, the overall structure is simple, and a user can conveniently operate and use the illuminometer.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel light brightness measurement, in particular to an illuminometer that is convenient to use in tunnels. Background Art

[0002] When a car approaches a long tunnel entrance, the brightness of the sky, open road surface, nearby buildings, etc. in the driver's field of vision is much higher than that of the tunnel entrance. Although the tunnel entrance is actually quite bright, the driver still feels that the tunnel entrance is very dark, like a "black hole", so that he cannot recognize the situation near the tunnel entrance. This phenomenon is called the "black hole effect". On the contrary, the "white hole effect" is the strong glare felt when transitioning from the darker environment inside the tunnel to the brighter environment outside the tunnel, and it is impossible to immediately see the situation outside the tunnel. Therefore, it is necessary to measure the light intensity at the entrance and exit of the tunnel.

[0003] The traditional measurement method is for the operator to measure the light intensity with a handheld illuminance meter. However, for the tunnel arch waist, its height is relatively high, which brings certain difficulties to the operator and requires the use of tools. Based on this, a convenient illuminance meter for use in tunnels is proposed to solve the above problem. Utility Model Content

[0004] The purpose of the utility model is to overcome the shortcomings of the prior art, provide an illuminance meter that is convenient to use in a tunnel, and effectively solve the deficiencies of the prior art.

[0005] In order to achieve the above-mentioned purpose, an embodiment of the utility model on one hand provides an illuminance meter for convenient use in a tunnel, comprising a first limiting tube, a second limiting tube and a third limiting tube, which are placed vertically and connected in sequence end to end, one side of the first limiting tube, the second limiting tube and the third limiting tube are each provided with a limiting groove, and a mounting seat that can slide vertically is installed inside the three, one side of the mounting seat protrudes with a limiting groove, three support tubes are installed at the top of the mounting seat, the top of the upper support tube is installed with an instrument fixing seat, the inside of the instrument fixing seat is provided with an illuminance meter body, a roller is installed on one side of the top of the third limiting tube, a spool and a ratchet that can rotate in a circle are installed on one side of the bottom end of the outer wall of the first limiting tube, a connecting rope is wound around the outside of the spool, one end of which passes around the roller and is fixedly connected to the middle part of the mounting seat, one end of the spool is installed with a ratchet that meshes with the ratchet, and one side of the ratchet is installed with an operating handle.

[0006] Preferably, any of the above schemes is that a screen mounting base which is tilted upward is installed at the bottom end of the outer wall of the first limiting tube, and a display screen which is electrically connected to the illuminance meter body is installed inside the screen mounting base. By using this scheme, it is convenient to provide an installation position for the display screen. At the same time, the top and side surfaces of the screen mounting base are open, which makes it convenient for the user to plug and unplug the bottom end of the display screen from the inside of the screen mounting base.

[0007] Preferably, any of the above schemes is that a slot is provided at the top end of the first limiting tube and the top end of the second limiting tube, and a protruding block matching the slot is installed at the bottom end of the second limiting tube and the bottom end of the third limiting tube. By using this scheme, it is convenient to limit the connection between the first limiting tube, the second limiting tube and the third limiting tube. At the same time, a butterfly bolt is installed near the slot to tighten the protruding block, thereby improving the stability of the connection between the first limiting tube, the second limiting tube and the third limiting tube.

[0008] Preferably, any of the above schemes has a middle portion of the outer wall of the mounting seat recessed inward, and a limiting ring that slides relative to the first limiting tube is installed at the recessed portion. By using this scheme, the outer wall of the limiting ring can contact the inner walls of the first limiting tube, the second limiting tube and the third limiting tube respectively, and support the bottom end position of the bottom support tube to avoid circular shaking of the bottom end of the support tube.

[0009] Preferably, any of the above schemes has a stepped shape at the bottom ends of the three support tubes, and they are threadedly connected in sequence from head to tail. By using this scheme, it is convenient to dock the three support tubes. At the same time, the number of support tubes and second limiting tubes can be increased according to the inner diameter of the tunnel at a later stage, thereby facilitating the improvement of the overall adjustable length and facilitating the use in different occasions.

[0010] The utility model has the following advantages:

[0011] 1. The convenient-to-use illuminance meter for the tunnel is provided with a first limiting tube, a second limiting tube and a third limiting tube, which are combined into a long cylindrical structure, three supporting tubes are connected end to end and installed inside the first limiting tube, the second limiting tube and the third limiting tube, the bobbin is installed at the bottom end of the first limiting tube, the connecting rope wound on the upper part of the bobbin is passed around the roller and fixedly connected to one side of the mounting seat, and then the bobbin is driven to rotate by rotating the operating handle, driving the three supporting tubes to move upward, raising the relative height of the illuminance meter body, so as to facilitate the measurement of the light intensity at the tunnel arch waist position, and the overall structure is simple, which is convenient for users to operate and use.

[0012] 2. The convenient-to-use illuminance meter in the tunnel is provided with a spool, ratchet and ratchet wheel, and the ratchet and ratchet wheel are meshed with each other, so as to limit the rotation of the spool, prevent the spool from turning over due to the gravity of the three support tubes and the illuminance meter body, and improve the stability of the measurement process. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 For this utility model Figure 1 A schematic diagram of the enlarged structure at A in the middle;

[0015] Figure 3 This is a schematic diagram of the first position limiting tube structure of the utility model;

[0016] Figure 4 It is a schematic diagram of the explosion structure of the first limiting tube, the second limiting tube and the third limiting tube of the utility model;

[0017] Figure 5 It is a schematic diagram of the explosion structure of three support tubes of the utility model;

[0018] Figure 6 For this utility model Figure 5 A schematic diagram of the enlarged structure at B in the middle;

[0019] Figure 7 This is a schematic diagram of the structure of the screen mounting base of the utility model.

[0020] In the figure: 1-first limiting tube, 2-second limiting tube, 3-third limiting tube, 4-roller, 5-operating handle, 6-ratchet, 7-mounting seat, 8-ratchet, 9-instrument fixing seat, 10-spool roll, 11-screen mounting seat, 12-display screen, 13-connecting rope, 14-limiting groove, 15-support tube, 16-illuminance meter body, 17-card slot, 18-protruding block, 19-limiting ring. DETAILED DESCRIPTION

[0021] The utility model is further described below in conjunction with the accompanying drawings, but the protection scope of the utility model is not limited to the following description.

[0022] like Figures 1 to 7As shown, a convenient illuminance meter for use in a tunnel comprises a first limiting tube 1, a second limiting tube 2 and a third limiting tube 3, which are placed vertically and connected end to end in sequence, a limiting groove 14 is provided on one side of the first limiting tube 1, the second limiting tube 2 and the third limiting tube 3, and a mounting seat 7 capable of vertical sliding is installed inside the three, a limiting groove 14 is protruded on one side of the mounting seat 7, three supporting tubes 15 are installed on the top of the mounting seat 7, and an instrument is installed on the top of the upper supporting tube 15 The instrument fixing seat 9 has an illuminance meter body 16 arranged inside the instrument fixing seat 9, a roller 4 is installed on one side of the top of the third limiting tube 3, a spool 10 and a ratchet 6 which can rotate in a circle are installed on one side of the bottom end of the outer wall of the first limiting tube 1, a connecting rope 13 is installed on the outside of the spool 10, one end of which passes around the roller 4 and is fixedly connected to the middle part of the mounting seat 7, a ratchet 8 meshing with the ratchet 6 is installed on one end of the spool 10, and an operating handle 5 is installed on one side of the ratchet 8.

[0023] A screen mounting base 11 tilted upward is installed at the bottom end of the outer wall of the first limiting tube 1, and a display screen 12 electrically connected to the illuminance meter body 16 is installed inside the first limiting tube 1. As an optional technical solution of the present invention, this facilitates providing an installation position for the display screen 12. At the same time, the top and side surfaces of the screen mounting base 11 are open, thereby facilitating the user to plug and unplug the bottom end of the display screen 12 from the inside of the screen mounting base 11.

[0024] A slot 17 is provided at the top of the first limiting tube 1 and the top of the second limiting tube 2, and a protruding block 18 matching the slot 17 is installed at the bottom end of the second limiting tube 2 and the bottom end of the third limiting tube 3. As an optional technical solution of the utility model, it is convenient to limit the connection between the first limiting tube 1, the second limiting tube 2 and the third limiting tube 3. At the same time, a butterfly bolt is installed near the slot 17 to tighten the protruding block 18, thereby improving the stability of the connection between the first limiting tube 1, the second limiting tube 2 and the third limiting tube 3.

[0025] The middle part of the outer wall of the mounting seat 7 is recessed inward, and a limiting ring 19 is installed at the recessed part, which slides relative to the first limiting tube 1. As an optional technical solution of the utility model, this makes it easy for the outer wall of the limiting ring 19 to contact the inner walls of the first limiting tube 1, the second limiting tube 2 and the third limiting tube 3 respectively, and support the bottom end position of the bottom support tube 15 to avoid circular shaking of the bottom end of the support tube 15.

[0026] The bottom ends of the three support tubes 15 are all stepped in shape and are threadedly connected in sequence from head to tail. As an optional technical solution of the utility model, this facilitates the docking connection of the three support tubes 15. At the same time, the number of support tubes 15 and second limiting tubes 2 can be increased in the later stage according to the inner diameter of the tunnel, thereby facilitating the improvement of the overall adjustable length and facilitating the use in different occasions.

[0027] The convenient illuminance meter for tunnels requires the following steps to use:

[0028] 1) When in use, the operating handle 5 is rotated to rotate the spool reel 10 so that the connecting rope 13 is wound;

[0029] 2) The connecting rope 13 pulls the mounting seat 7 to make the supporting tube 15 move vertically upward, raising the installation height of the illuminance meter body 16, and measuring the light intensity at the tunnel waist position.

[0030] To sum up, when the user uses it, by setting the first limiting tube 1, the second limiting tube 2 and the third limiting tube 3, the three are combined into a long cylindrical structure, the three support tubes 15 are connected end to end and installed inside the first limiting tube 1, the second limiting tube 2 and the third limiting tube 3, the spool roll 10 is installed at the bottom end of the first limiting tube 1, and the connecting rope 13 wound on the upper part passes around the roller 4 and is fixedly connected to one side of the mounting seat 7, and then by rotating the operating handle 5, the spool roll 10 is driven to rotate, and the three support tubes 15 are driven to move upward, and the relative height of the illuminance meter body 16 is raised, so as to facilitate the measurement of the light intensity at the tunnel arch waist position. The overall structure is simple and convenient for users to operate and use, and then by setting the spool roll 10, the ratchet 6 and the ratchet wheel 8, the ratchet 6 is meshed with the ratchet wheel 8, so as to facilitate the rotation of the spool 10 to prevent the spool roll 10 from being overturned by the gravity of the three support tubes 15 and the illuminance meter body 16, thereby improving the stability of the measurement process.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A convenient illuminance meter for use in tunnels, characterized in that: The invention comprises a first limiting tube (1), a second limiting tube (2) and a third limiting tube (3), which are placed vertically and connected end to end in sequence, one side of each of the first limiting tube (1), the second limiting tube (2) and the third limiting tube (3) is provided with a limiting groove (14), and a mounting seat (7) capable of vertical sliding is installed inside the three tubes, one side of the mounting seat (7) protrudes with the limiting groove (14), the top of the mounting seat (7) is provided with three supporting tubes (15), the top of the upper supporting tube (15) is provided with an instrument fixing seat (9), and the instrument fixing seat An illuminance meter body (16) is arranged inside (9), a roller (4) is installed on one side of the top end of the third limiting tube (3), a spool (10) and a ratchet (6) that can rotate in a circle are installed on one side of the bottom end of the outer wall of the first limiting tube (1), a connecting rope (13) is installed around the outside of the spool (10), one end of which passes around the roller (4) and is fixedly connected to the middle part of the mounting seat (7), a ratchet (8) that meshes with the ratchet (6) is installed on one end of the spool (10), and an operating handle (5) is installed on one side of the ratchet (8).

2. The illuminance meter for convenient use in tunnels according to claim 1, characterized in that: A screen mounting seat (11) tilted upward is installed at the bottom end of the outer wall of the first position limiting tube (1), and a display screen (12) electrically connected to the illuminometer body (16) is installed inside the screen mounting seat.

3. The illuminance meter for convenient use in tunnels according to claim 2, characterized in that: The top ends of the first limiting tube (1) and the second limiting tube (2) are both provided with a clamping groove (17), and the bottom ends of the second limiting tube (2) and the third limiting tube (3) are both provided with a protruding block (18) matching with the clamping groove (17).

4. The illuminometer for convenient use in tunnels according to claim 3, characterized in that: The middle portion of the outer wall of the mounting seat (7) is recessed inwards, and a limiting ring (19) is installed at the recessed portion and slides relative to the first limiting tube (1).

5. The illuminometer for convenient use in tunnels according to claim 4, characterized in that: The bottom ends of the three support tubes (15) are all stepped in shape and are threadedly connected in sequence from head to tail.

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