Novel forest fire prevention watchtower compass

Abstract

The utility model discloses a novel forest fire prevention watchtower compass, and relates to the technical field of forest fire prevention. The utility model aims to solve the technical problems that in the prior art, a forest fire prevention lookout staff uses a handheld compass to measure the orientation, the lookout staff needs to hold the compass to walk to a fire discovering orientation to measure when discovering a fire, and the handheld compass of the lookout staff also swings inevitably; and errors are generated in positioning measurement due to the fact that swinging of the tower top and shaking of the human body are added together. The compass comprises a compass and a bottom sliding plate, the compass is an annular compass formed by splicing a plurality of arc-shaped compass pieces, the bottom sliding plate is movably arranged on the compass, and 360-degree angle scales are arranged on the compass. The utility model is used for forest fire prevention.

Description

Technical Field

[0001] The utility model relates to the technical field of biomass boilers, in particular to a new forest fire prevention lookout tower compass. Background Art

[0002] In the early 1950s, my country began to build lookout towers in key forest areas. Until now, the use of lookout towers to monitor fire conditions in forest areas across the country has basically formed a network, with a coverage rate of more than 85%. This is also one of the main facilities for monitoring forest and grassland fires in my country. At present, forest and grassland fire lookout towers play an important role in forest and grassland fire early warning monitoring.

[0003] The existing lookout towers report fires very promptly, but the azimuth is seriously inaccurate, and the error between the reported position and the fire location is very large. Through understanding, it is found that this situation has always existed. There are several reasons. First, the business level of the lookouts is uneven. Most of the lookouts are from the forestry production workers of the forest farm. They have relatively low cultural level and are older. Some of them may not even be able to tell the basic direction on the tower. Second, the lookout tower is not built according to due south and due north. There is no true north mark on the top of the tower. There is a lack of positioning reference point. The dispatcher's experience is relied on to determine whether the data reported by the lookout is usable. Third, the lookout uses a handheld compass to measure the direction. Even if there is a true north reference point, the other three directions cannot be accurately measured. Once a fire is discovered, the lookout often needs to hold the compass and walk to the fire discovery direction for measurement. Fourth, there is a wind swing at the top of the lookout tower. The swing amplitude depends on the wind force. The lookout's handheld compass will inevitably swing. The swing of the top of the tower and the shaking of the human body will also produce certain errors in positioning measurement. Therefore, a new forest fire prevention lookout tower compass is provided to solve the above problems. Utility Model Content

[0004] The utility model aims to solve the problem that in the prior art, forest fire lookouts use handheld compasses to measure directions. When a fire is discovered, the lookout needs to hold the compass and walk to the direction where the fire is discovered to measure. The lookout's handheld compass inevitably swings, and the swing of the tower top and the shaking of the human body together cause errors in positioning measurement. A new forest fire lookout tower compass is provided.

[0005] The utility model adopts the following technical scheme to solve the above problems: a novel forest fire prevention lookout tower compass, comprising a compass and a bottom slide plate; the compass is a circular compass composed of a plurality of arc-shaped compass pieces spliced ​​together, the bottom slide plate is movably arranged on the compass, and a 360-degree angle scale is arranged on the compass.

[0006] Furthermore, the bottom slide plate includes a ranging bracket, a pitch dial, a left support frame, a right support frame and a slide; the slide is arranged on the upper part of the compass, the left support frame and the right support frame are respectively installed on the left and right sides of the slide, the ranging bracket is rotatably connected to the left support frame and the right support frame through a rotating shaft, and the pitch dial is fixedly connected to the left support frame.

[0007] Furthermore, the left and right sides of the ranging bracket are respectively fixedly connected with rotating shafts, wherein the rotating shaft on one side is rotatably connected to the right support frame; the rotating shaft on the other side is rotatably connected to the left support frame and passes through the left support frame and the pitch dial in sequence, and the rotating shaft on one side of the left support frame extends out of the pitch dial and is fixedly connected to the dial pointer.

[0008] Furthermore, the slide is provided with a through slot in a direction perpendicular to the compass scale surface, and the through slot is provided with a slide pointer along the length direction.

[0009] Furthermore, a guide rail is installed at the lower part of the slide, and the slide can slide along the compass.

[0010] Furthermore, ball screws or bearings are respectively installed on the two side walls of the slide plate facing the compass plate.

[0011] Furthermore, the compass is composed of eight compass pieces spliced ​​together, and adjacent compass pieces are connected by connecting blocks.

[0012] Furthermore, one of the compass pieces is a magnetic north compass piece, and the magnetic north compass piece is arranged toward the geomagnetic North Pole.

[0013] Furthermore, a telescope is installed on the upper part of the ranging bracket.

[0014] The utility model has the following beneficial technical effects:

[0015] The compass of the utility model is composed of eight compass pieces. When the magnetic north is determined, it is easy to install. The compass is made of aluminum material, which is light, corrosion-resistant, strong and durable. The utility model adopts a bottom slide design, and the telescope can slide 360 ​​degrees on the compass through the bottom slide. When a fire occurs, the lookout can directly read the direction and distance data of the fire by holding a scale on a scale in a straight line with the fire.

[0016] The utility model provides a more accurate way for the lookout tower to read the fire location information, accurately find the fire point, and save time for timely fire fighting in forest fire prevention. The utility model is simple to operate and is widely used in forest and grassland fire fighting. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the utility model;

[0018] Figure 2 yes Figure 1 A partial enlarged view of part A;

[0019] Figure 3 yes Figure 1 A partial enlarged view of part B;

[0020] Figure 4 It is a schematic diagram of the structure of the telescope slide;

[0021] Figure 5 yes Figure 4 The main view of

[0022] Figure 6 yes Figure 5 Left view of

[0023] Figure 7 It is a structural schematic diagram of an embodiment of a bottom slide plate;

[0024] Figure 8 is a structural schematic diagram of another embodiment of a bottom slide plate;

[0025] Fig. 9 It is a schematic diagram of the structure of the magnetic north compass piece;

[0026] Fig.10 It is a schematic diagram of the structure of the compass piece;

[0027] In the figure: 1. compass; 101. compass piece; 102. magnetic north compass piece; 2. connecting block; 3. telescope; 4. bottom slide; 5. ranging bracket; 6. pitch dial; 601. dial pointer; 7. left support frame; 8. right support frame; 9. slide; 901. slide pointer; 10. guide rail; 11. rotating shaft; 12. ball screw; 13. bearing. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solutions and advantages of the utility model more clearly understood, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments of the specification. The specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0029] Specific implementation method 1: Combination Figures 1 to 10 The present embodiment describes a novel forest fire lookout tower compass, comprising a compass 1 and a bottom slide 4; the compass 1 is a circular compass composed of a plurality of arc-shaped compass pieces 101, the bottom slide 4 is movably arranged on the compass 1, and the compass 1 is provided with a 360-degree angle scale.

[0030] In a preferred embodiment, the bottom slide plate 4 includes a ranging bracket 5, a pitch dial 6, a left support frame 7, a right support frame 8 and a slide 9; the slide 9 is arranged on the upper part of the compass 1, the left support frame 7 and the right support frame 8 are respectively installed on the left and right sides of the slide 9, the ranging bracket 5 is rotatably connected to the left support frame 7 and the right support frame 8 through a rotating shaft 11, and the pitch dial 6 is fixedly connected to the left support frame 7.

[0031] In a preferred embodiment, the left and right sides of the ranging bracket 5 are respectively fixedly connected with a rotating shaft 11, wherein the rotating shaft 11 on one side is rotatably connected to the right support frame 8; the rotating shaft 11 on the other side is rotatably connected to the left support frame 7 and passes through the left support frame 7 and the pitch dial 6 in sequence, and the rotating shaft 11 on one side of the left support frame 7 extends out of the pitch dial 6 and is fixedly connected to the end of the dial pointer 601.

[0032] In a preferred embodiment, the slide plate 9 is provided with a through slot perpendicular to the scale surface of the compass 1, and the through slot is provided with a slide plate pointer 901 along the length direction.

[0033] In a preferred embodiment, a guide rail 10 is installed at the lower part of the slide 9, and the slide 9 can slide along the compass 1.

[0034] In a preferred embodiment, ball screws 12 or bearings 13 are respectively installed on the two side walls of the slide 9 facing the compass plate 101, wherein the ball screws 12 or bearings 13 installed on the slide 9 ensure that the slide 9 moves smoothly when sliding along the circular compass 1.

[0035] In a preferred embodiment, the compass 1 is composed of eight compass pieces 101 , and adjacent compass pieces 101 are connected by connecting blocks 2 .

[0036] In a preferred embodiment, one of the compass pieces 101 is a magnetic north compass piece 102, and the magnetic north compass piece 102 is arranged toward the magnetic north pole. In a preferred embodiment, a telescope 3 for observation is installed on the upper part of the ranging bracket 5.

[0037] Specific implementation method 2: Combination Figures 1 to 10 This embodiment is described. This embodiment analyzes the structure of the compass and selects an overall structure suitable for the lookout. The principle is to facilitate installation on the observation tower while meeting the lookout's operational requirements. The overall structure of the compass 1 is composed of eight compass pieces 101 of one eighth of a circle. Each part is connected in the middle by a connecting block 2. The arc of the connecting block 2 matches the arc of the compass piece 101. When the magnetic north is determined, it is easy to install. If it is split into more arcs, it may bring greater errors. It needs to be further determined by experiments. The purpose of observation without blind spots has been achieved. The diameter of the new compass is 3800 mm.

[0038] In a preferred embodiment, the materials available for making the compass include plastic, iron, aluminum and other materials, which are screened by experimental methods, taking into account factors such as the weight and corrosion resistance of the material to meet the design requirements. The material for making the compass 1 is determined through experiments, and the available materials are respectively made into compasses 1 according to the structural design. The relevant properties of the compasses 1 made of various materials are tested through experiments, and the quality, durability, corrosion resistance and other relevant factors of the compass 1 are comprehensively scored and compared, and aluminum is finally selected as the best material for making the compass 1.

[0039] In a preferred embodiment, the new compass can read the location information of the fire, and the telescope 3 can assist the lookout in observation. The installation method of the telescope 3 needs to be designed and improved according to the previous installation method. The telescope 3 is an important tool for observing the fire. The lookout combines the telescope 3 with the scale on the compass 1 to effectively provide fire data. Therefore, the installation of the telescope 3 on the compass 1 replaces the original installation method in order to meet the monitoring needs of the lookout. The bottom slide 4 is designed so that the telescope 3 can slide 360 ​​degrees on the compass 1 to ensure observation without blind spots. The bottom slide 4 adopts a bottom slide 9, and there are two left and right support frames on both sides. A pitch dial 6 is provided on one side of the support frame. A distance measuring bracket 5 is connected between the two support frames, and the telescope 3 is installed on the distance measuring bracket 5.

[0040] In a preferred embodiment, the compass is connected to the watchtower by riveting, and a new installation plan for the compass is woven. There are three purposes. First, the plan provides a method for determining true north, then the horizontal calibration method of the new compass, and finally, further ensuring the safety of the use of the compass.

[0041] In a preferred embodiment, the overall structure of the compass 1 is composed of eight compass pieces 101 of one eighth of a circle. When the magnetic north is determined, it is easy to install. The compass 1 is made of aluminum material, which is light, corrosion-resistant, strong and durable. The scale paint on it is black and white with obvious color difference. The frame is black and the scale is white, which is easy to identify. The telescope adopts the bottom slide 4 design, so that the telescope 3 can slide 360 ​​degrees on the compass 1 to ensure observation without blind spots. The lookout only needs to hold the scale to read the data directly on the scale in a straight line with the fire. The accuracy of fire azimuth measurement within ten kilometers reaches more than 95%.

[0042] Other components and connection relationships are the same as those in the first specific implementation mode.

[0043] The working principle of this utility model:

[0044] The utility model compass is connected to the observation tower by riveting connection. The new compass can read the location information of the fire, and the telescope 3 can assist the lookout in observation. The telescope 3 is an important tool for observing the fire. The lookout combines the telescope 3 with the scale on the compass 1 to effectively provide fire data. The installation of the telescope 3 on the compass 1 replaces the original installation method in order to meet the monitoring needs of the lookout. The bottom slide 4 design is adopted so that the telescope 3 can slide 360 ​​degrees on the compass 1 to ensure observation without blind spots. The slide adopts the bottom slide 9, and there are two left and right support frames on both sides. A pitch dial 6 is provided on one side of the support frame. A distance measuring bracket 5 is connected between the two support frames, and the telescope 3 is installed on the distance measuring bracket 5.

[0045] The overall structure of the compass 1 is composed of eight compass pieces 101 of one-eighth circle. When the magnetic north is determined, it is easy to install. The compass 1 is made of aluminum material, which is light, corrosion-resistant, strong and durable. The scale paint on it is black and white with obvious color difference. The frame is black and the scale is white, which is easy to identify. The telescope adopts the bottom slide 4 design, so that the telescope 3 can slide 360 ​​degrees on the compass 1 to ensure observation without blind spots. The lookout only needs to hold the scale on the scale in a straight line with the fire situation to directly read the data.

[0046] The above-described embodiments are only preferred and exemplary and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A new type of forest fire prevention tower compass, characterized by: The invention comprises a compass (1) and a bottom slide plate (4); the compass (1) is a circular compass composed of a plurality of arc-shaped compass plates (101) spliced ​​together; the bottom slide plate (4) is movably arranged on the compass (1); and a 360-degree angle scale is arranged on the compass (1).

2. The novel forest fire prevention tower compass according to claim 1 is characterized in that: The bottom slide plate (4) comprises a distance measuring bracket (5), a pitch scale plate (6), a left support frame (7), a right support frame (8) and a slide plate (9); The slide plate (9) is arranged on the upper part of the compass (1); the left support frame (7) and the right support frame (8) are respectively installed on the left and right sides of the slide plate (9); the distance measuring bracket (5) is rotatably connected to the left support frame (7) and the right support frame (8) via a rotating shaft (11); and the pitch scale plate (6) is fixedly connected to the left support frame (7).

3. The novel forest fire prevention tower compass according to claim 2 is characterized in that: The left and right sides of the distance measuring bracket (5) are respectively fixedly connected with rotating shafts (11), wherein the rotating shaft (11) on one side is rotationally connected to the right support frame (8); the rotating shaft (11) on the other side is rotationally connected to the left support frame (7) and passes through the left support frame (7) and the pitch dial (6) in sequence, and the end of the rotating shaft (11) on one side of the left support frame (7) extending out of the pitch dial (6) is fixedly connected to a dial pointer (601).

4. The novel forest fire prevention tower compass according to claim 2 is characterized in that: The slide plate (9) is provided with a through slot in a direction perpendicular to the scale surface of the compass (1), and the through slot is provided with a slide plate pointer (901) along the length direction.

5. The novel forest fire prevention tower compass according to claim 2 is characterized in that: A guide rail (10) is installed at the lower part of the slide (9), and the slide (9) can slide along the compass (1).

6. The new forest fire prevention tower compass according to claim 5 is characterized by: Ball screws (12) or bearings (13) are respectively installed on the two side walls of the slide plate (9) facing the compass plate (101).

7. The novel forest fire prevention tower compass according to claim 1 is characterized by: The compass (1) is composed of eight compass pieces (101) spliced ​​together, and adjacent compass pieces (101) are connected via a connecting block (2).

8. The novel forest fire prevention tower compass according to claim 7 is characterized in that: One of the compass pieces (101) is a magnetic north compass piece (102), and the magnetic north compass piece (102) is arranged toward the geomagnetic North Pole.

9. The novel forest fire prevention tower compass according to claim 2 is characterized by: A telescope (3) is installed on the upper part of the distance measuring bracket (5).

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