Land area measuring device for land resource investigation

Abstract

The invention discloses a land area measuring device for land resource investigation, and particularly relates to the technical field of measuring devices.The land area measuring device comprises a device shell and a fixing cone, universal wheels are fixedly connected to the four corners of the lower end of the device shell, a handle is fixedly connected to the front end of the device shell, and a measuring rope is fixedly connected to the outer surface of the fixing cone; the inner surface and the rear end of the device shell are jointly provided with a retractable fixing assembly, and a cleaning assembly is arranged at the position, behind the retractable fixing assembly, of the inner surface of the device shell. According to the land area measuring device for land resource investigation, the hammering mechanism and the limiting mechanism enable the measuring rope to cling to the ground when the measuring rope measures the land area, and the measuring rope is temporarily fixed on the ground and clings to the ground in the rope releasing measurement process, so that the measuring rope is prevented from being damaged. The measuring rope is effectively prevented from shaking due to wind interference or human factors, the measuring stability of the measuring rope is improved, the measuring accuracy is further improved, and the deviation of a measuring result is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of measuring devices, and in particular to a land area measuring device for land and resources survey. Background Art

[0002] Land survey work mainly includes land use status survey, land ownership survey, special land use survey, basic farmland survey, land use database construction, results summary and file sorting and archiving. It is to comprehensively find out the land use status, master the real and accurate basic land data, improve the land survey, monitoring and statistical system, strengthen the social service of land resource information, and ensure the stable and healthy development of the national economy and the needs of land and resources management. Therefore, land and resources survey is necessary for my country's land planning and development. When conducting land and resources survey, it is often necessary to measure the area of ​​the land, so a land area measurement device is needed. Chinese patent announcement number CN210689445U discloses a land area measuring device, including a base, the front and rear sides of the upper end of the base are respectively fixedly connected with a support plate, one side of the support plate is rotatably contacted with a roller, the front and rear sides of the roller are respectively connected with connecting pins through threads, and a scale rope is wound around the surface of the roller, the upper rear side of the base is fixedly connected with a motor, the left side of the base is fixedly connected with a sliding sleeve, the sliding sleeve is slidably connected with a first pointed pile, one end of the scale rope is fixedly connected with a connecting block, the left side of the connecting block is fixedly connected with a collar, and the left side of the connecting block is connected with a connecting piece, through the connection of the first pointed pile and the second pointed pile, it is convenient to fix the base and the connecting piece, and at the same time, it is convenient to fix the two ends of the scale rope, so as to facilitate land measurement and reduce manual labor. At the same time, the motor drives the roller to rotate, so as to facilitate the collection and release of the scale rope and avoid the trouble caused by manual collection and release; however, the above patent document still has the following defects during implementation: Although the above patent is convenient for retracting and releasing the measuring rope during implementation, it is impossible to fix the released measuring rope to the ground, so that the measuring rope is easily shaken by human interference and wind when suspended in the air, resulting in reduced accuracy and reliability of land measurement, large deviation in measurement results, and inconvenience in measurement. Summary of the invention

[0003] The main purpose of the present invention is to provide a land area measuring device for land resources survey, which can effectively solve the problem that the measuring rope cannot be fixed to the ground.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a land area measuring device for land and resources survey, including a device shell and a fixed cone, the four corners of the lower end of the device shell are fixedly connected with universal wheels, the front end of the device shell is fixedly connected with a handle, the upper end of the device shell is fixedly installed with a cover plate, the outer surface of the fixed cone is fixedly connected with a measuring rope, the inner surface and the rear end of the device shell are jointly provided with a retractable and fixed component, and the inner surface of the device shell is provided with a cleaning component behind the retractable and fixed component.

[0005] Preferably, the retractable and fixed assembly includes an energy storage battery fixedly mounted on the front side of the lower portion of the inner surface of the device shell, the inner surface of the device shell is provided with a retractable mechanism, the inner surface of the device shell is provided with a reciprocating mechanism above the retractable mechanism, the inner surface of the device shell and the rear portion of the upper end are jointly provided with a hammer mechanism, a limiting mechanism is provided in the middle portion of the rear end of the device shell, and a pressing mechanism is provided at the rear end of the device shell below the limiting mechanism.

[0006] Preferably, the retracting and releasing mechanism includes a rotating roller that passes through the right end of the device housing and extends to the left end of the device housing and is rotatably connected, the left end of the rotating roller is fixedly connected to a servo motor fixedly connected to the device housing, the right end of the device housing passes through and extends to the left end of the device housing and is rotatably connected to a reciprocating rod, the left portion of the outer surface of the rotating roller and the left portion of the outer surface of the reciprocating rod are commonly fixedly connected to a pulley group 1, the left and right portions of the inner surface of the device housing are linearly distributed and commonly rotatably connected to two rotating rods 1, the middle portions of the outer surfaces of the two rotating rods 1 are fixedly connected to a rubber ring, the left portions of the outer surfaces of the two rotating rods 1 are fixedly connected to a meshing gear 1, the left portion of the outer surface of the reciprocating rod and the left portion of the outer surface of the rotating rod 1 located at the lower portion are commonly fixedly connected to a pulley group 2, and the outer surface of the rotating roller is wound around and connected to a measuring rope.

[0007] Preferably, the reciprocating mechanism includes a groove plate fixedly connected to the inner surface of the device shell, the inner surface of the groove plate is slidably connected to a slider 1 that is slidably connected to the outer surface of the reciprocating rod, a lower end of the slider is fixedly connected to a rectangular frame, and the left and right parts of the inner surface of the rectangular frame are symmetrically connected to limit wheels for rotation up and down.

[0008] Preferably, the hammer mechanism includes a fixed plate fixedly connected to the right portion of the inner surface of the device shell, the inner surface of the fixed plate is rotatably connected to a transmission rod rotatably connected to the device shell, the right portion of the outer surface of the rotating roller is fixedly connected to a one-way bearing 1, the right portion of the outer surface of the transmission rod and the outer surface of the one-way bearing 1 are commonly fixedly connected to a pulley group 3, the left portion of the outer surface of the transmission rod is fixedly connected to a connecting rod, the middle portion of the upper end of the groove plate is fixedly connected to a fixed block 1, the inner surface of the fixed block 1 is slidably connected to a slider 2 rotatably connected to the connecting rod, the rear end of the slider 2 is fixedly connected to a rack, the rear end of the upper end of the device shell is symmetrically fixedly connected to a connecting block 1, the inner surfaces of the two connecting blocks 1 are commonly rotatably connected to a rotating rod 2, the middle portion of the outer surface of the rotating rod 2 is fixedly connected to a gear 2 meshing with the rack, and the left and right portions of the outer surface of the rotating rod 2 are commonly fixedly connected to the hammer plate.

[0009] Preferably, the limiting mechanism includes a slide slot frame fixedly connected to the rear end of the device shell, a plurality of fixing rods are movably installed on the inner surface of the slide slot frame, magnets are fixedly connected to the outer surfaces of the plurality of fixing rods, a return spring is fixedly connected to the front of the inner surface of the slide slot frame, a push plate slidably connected to the slide slot frame is fixedly connected to the rear end of the return spring, a rectangular hole 1 is opened at the rear end of the upper end of the slide slot frame, baffles are symmetrically connected to the front and rear of the inner surface of the rectangular hole 1 for rotation, and springs fixedly connected to the slide slot frame are fixedly connected on the sides away from each other.

[0010] Preferably, the pressing mechanism includes a connecting block 2 fixedly connected to the rear end of the device housing, a spring telescopic rod fixedly connected to the lower end of the connecting block 2, the lower end of the spring telescopic rod fixedly connected to the fixed block 2, and a roller rotatably connected to the inner surface of the fixed block 2.

[0011] Preferably, the cleaning assembly comprises a one-way bearing 2 fixedly connected to the right portion of the outer surface of the upper rotating rod 1, a cleaning mechanism is arranged on the inner surface of the device shell, and a scraping mechanism is arranged on the rear portion of the inner surface of the device shell.

[0012] Preferably, the cleaning mechanism includes two rotating rods three rotatably connected to the left and right parts of the inner surface of the device shell, a brush is fixedly connected to the middle part of the outer surface of the rotating rods three, the outer surface of the one-way bearing two and the right part of the upper rotating rod three are jointly fixedly connected to a pulley group four, and the right parts of the outer surfaces of the two rotating rods three are fixedly connected to meshing gears three.

[0013] Preferably, the scraping mechanism includes an L-shaped plate fixedly connected to the rear and lower parts of the inner surface of the device shell, and two scrapers are linearly distributed and fixedly connected to the rear end of the L-shaped plate. The cross-sections of the two scrapers are triangular, and a rectangular hole 2 is opened on the rear side of the lower part of the inner surface of the device shell.

[0014] Compared with the prior art, the present invention has the following beneficial effects: In the present invention, by providing a hammer mechanism, a limit mechanism and a downward pressing mechanism, the measuring rope can be laid out closely to the ground under the action of the roller when measuring the land area, and the measuring rope is temporarily fixed on the ground and closely to the ground under the cooperation of the hammer plate and the fixing rod during the process of laying out the rope for measurement, thereby effectively preventing the measuring rope from shaking due to wind interference or human factors, improving the stability of the measuring rope during measurement, thereby improving the accuracy of measurement and reducing the deviation of measurement results, and at the same time better adapting to terrain changes. In the present invention, by providing a retracting mechanism and a reciprocating mechanism, the measuring rope can be reeled in and released by the rotating roller, and during the reeling process, the left and right reciprocating motion of the slider can drive the measuring rope to reciprocate around the rotating roller, which can effectively prevent the measuring rope from being entangled during the retracting process, thereby improving the work efficiency during measurement. In the present invention, by providing a cleaning mechanism and a scraping mechanism, the dirt and debris attached to the outer surface of the measuring rope can be cleaned by a brush and a scraper during the winding process of the measuring rope after use, thereby preventing dirt or other impurities from adhering to the measuring rope and changing the actual length or shape of the measuring rope. Such changes have a significant impact on the measurement results. Cleaning the dirt can ensure the accurate size of the measuring rope, thereby improving the accuracy of the measurement. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the overall cross-sectional structure of the present invention; Figure 3 It is a schematic diagram of the cross-sectional structure of the housing of the device of the present invention; Figure 4 It is a schematic diagram of the structure of the retractable fixing component and the cleaning component of the present invention; Figure 5 It is a schematic cross-sectional structure diagram of the retractable and reciprocating mechanism of the present invention; Figure 6 It is a schematic diagram of the explosion effect of the hammer mechanism of the present invention; Figure 7 It is a schematic diagram of the structure of the limiting mechanism of the present invention; Figure 8 It is a schematic diagram of a cross-sectional structure of a rectangular hole of the present invention; Fig. 9 It is a schematic diagram of the structure of the pressing mechanism of the present invention; Fig.10 It is a schematic diagram of the cleaning mechanism structure of the present invention; Fig.11 It is a schematic diagram of the structure of the scraping mechanism of the present invention.

[0016] In the figure: 1. device housing; 2. universal wheel; 3. handle; 4. cover plate; 5. fixed cone; 6. measuring rope; 7. retractable and fixed assembly; 71. energy storage battery; 72. retractable mechanism; 721. rotating roller; 722. servo motor; 723. reciprocating rod; 724. pulley group 1; 725. rotating rod 1; 726. rubber ring; 727. pulley group 2; 728. gear 1; 73. reciprocating mechanism; 731. groove plate; 732. slider 1; 733. rectangular frame; 734. limit wheel; 74. hammer mechanism; 741. fixed plate; 742. transmission rod; 743. one-way bearing 1; 744. pulley group 3; 745. fixed block 1; 746. slider 2; 747. rack ;748, connecting block one;749, rotating rod two;7410, gear two;7411, hammer plate;75, limiting mechanism;751, slide frame;752, reset spring;753, fixing rod;754, rectangular hole one;755, baffle;756, spring;757, push plate;758, magnet;76, pressing mechanism;761, connecting block two;762, spring telescopic rod;763, fixing block two;764, roller;8, cleaning component;81, cleaning mechanism;811, rotating rod three;812, one-way bearing two;813, pulley group four;814, gear three;815, brush;82, scraping mechanism;821, L-shaped plate;822, scraper;823, rectangular hole two. DETAILED DESCRIPTION

[0017] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0018] Embodiment 1, as Figure 1 and Figure 2 As shown, a land area measuring device for land and resources survey includes a device shell 1 and a fixed cone 5. Universal wheels 2 are fixedly connected to the four corners of the lower end of the device shell 1, a handle 3 is fixedly connected to the front end of the device shell 1, a cover plate 4 is fixedly installed on the upper end of the device shell 1, a measuring rope 6 is fixedly connected to the outer surface of the fixed cone 5, and a retractable fixing component 7 is jointly provided on the inner surface and the rear end of the device shell 1. A cleaning component 8 is provided on the inner surface of the device shell 1 behind the retractable fixing component 7.

[0019] During the implementation of this embodiment, the fixing cone 5 is fixed in the soil, and the device housing 1 is pulled to make the universal wheel 2 roll with the ground. At the same time, the measuring rope 6 is released through the retractable fixing component 7, and the measuring rope 6 is temporarily fixed to the ground during the releasing process to improve the accuracy of the measurement. Finally, the user observes and records the scale on the measuring rope 6 to calculate the land area. After the measuring rope 6 is used, the dirt and debris attached to the measuring rope 6 can be cleaned through the cleaning component 8 during the winding process.

[0020] Specifically, in order to achieve the temporary fixation of the released measuring rope 6 to the ground, refer to Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 and Fig. 9 In this embodiment, the retractable and fixed component 7 includes an energy storage battery 71 fixedly installed on the front side of the lower part of the inner surface of the device shell 1, a retractable mechanism 72 is provided on the inner surface of the device shell 1, a reciprocating mechanism 73 is provided on the inner surface of the device shell 1 above the retractable and fixed mechanism 72, a hammering mechanism 74 is provided on the inner surface and the rear part of the upper end of the device shell 1, a limiting mechanism 75 is provided in the middle part of the rear end of the device shell 1, and a pressing mechanism 76 is provided on the rear end of the device shell 1 below the limiting mechanism 75.

[0021] For further information, see Figure 4 and Figure 5 In this embodiment, the retracting and releasing mechanism 72 includes a rotating roller 721 that penetrates the right end of the device housing 1 and extends to the left end of the device housing 1 and is rotatably connected. The left end of the rotating roller 721 is fixedly connected to a servo motor 722 that is fixedly connected to the device housing 1. The right end of the device housing 1 penetrates and extends to the left end of the device housing 1 and is rotatably connected to a reciprocating rod 723. The left portion of the outer surface of the rotating roller 721 and the left portion of the outer surface of the reciprocating rod 723 are commonly fixedly connected to a pulley group 1 724. The left and right portions of the inner surface of the device housing 1 are linearly distributed and commonly rotatably connected to two rotating rods 1 725. The middle portions of the outer surfaces of the two rotating rods 1 725 are fixedly connected to a rubber ring 726. The left portions of the outer surfaces of the two rotating rods 1 725 are fixedly connected to meshing gears 1 728. The left portion of the outer surface of the reciprocating rod 723 and the left portion of the outer surface of the rotating rod 1 725 located at the lower part are commonly fixedly connected to a pulley group 2 727. The outer surface of the rotating roller 721 is wound and connected to the measuring rope 6.

[0022] During the implementation process, the energy storage battery 71 is installed at the set position, and the servo motor 722 is started, so that the output end of the servo motor 722 drives the rotating roller 721 to rotate through the coupling, and the measuring rope 6 wrapped around the rotating roller 721 is loosened. At the same time, under the joint action of the pulley group 1 724, the reciprocating rod 723 and the pulley group 2 727, the rotating rod 1 725 at the lower part is driven to rotate, and under the meshing action of the gear 1 728, the rotating rod 1 725 at the upper part is driven to rotate, so that the two rubber rings 726 are rotated, and then the measuring rope 6 is transported outward, thereby improving the efficiency of the line release.

[0023] The servo motor 722 mentioned above is controlled by a servo control system in the prior art in this solution, which can control the speed, number of rotations, and rotation angle of the servo motor 722. In this solution, it is only necessary to make the number of forward and reverse rotations of the servo motor 722 the same, and to stop in time after the number of rotations is completed.

[0024] The pulley set 1 724 and the pulley set 2 727 mentioned above are both composed of two pulleys and a belt.

[0025] The energy storage battery 71 mentioned above is a mature energy storage technology means and energy storage technology equipment in the prior art. In this solution, it is used to store electrical energy and provide electrical energy for the servo motor 722. Its structure and principle will not be explained again.

[0026] For further information, see Figure 4 and Figure 5 In this embodiment, the reciprocating mechanism 73 includes a groove plate 731 fixedly connected to the inner surface of the device housing 1, the inner surface of the groove plate 731 is slidably connected to a slider 732 slidably connected to the outer surface of the reciprocating rod 723, the lower end of the slider 732 is fixedly connected to a rectangular frame 733, and the left and right parts of the inner surface of the rectangular frame 733 are symmetrically connected to the limiting wheel 734 for rotation up and down.

[0027] During the implementation process, the transmission of the pulley group 724 will drive the reciprocating rod 723 to rotate. Since the slider 732 is slidably connected to the reciprocating rod 723, the slider 732 can slide back and forth on the inner surface of the groove plate 731, which can drive the measuring rope 6 passing through the limiting wheel 734 to reciprocate left and right, thereby avoiding the measuring rope 6 wrapped around the rotating roller 721 from being entangled, thereby increasing the service life of the measuring rope 6.

[0028] The slider 1 732 and the reciprocating rod 723 mentioned above constitute a ball screw mechanism in the prior art.

[0029] For further information, see Figure 4 and Fig. 9In this embodiment, the pressing mechanism 76 includes a connecting block 761 fixedly connected to the rear end of the device housing 1, a spring telescopic rod 762 is fixedly connected to the lower end of the connecting block 761, and a fixed block 763 is fixedly connected to the lower end of the spring telescopic rod 762, and a roller 764 is rotatably connected to the inner surface of the fixed block 763.

[0030] During implementation, when the measuring rope 6 is released by the retracting mechanism 72 , the measuring rope 6 will be pressed down to the ground by the roller 764 . At the same time, under the action of the spring telescopic rod 762 , the measuring rope 6 can always be kept close to the ground.

[0031] For further information, see Figure 4 , Figure 7 and Figure 8 In this embodiment, the limiting mechanism 75 includes a slide groove frame 751 fixedly connected to the rear end of the device housing 1, a plurality of fixing rods 753 are movably installed on the inner surface of the slide groove frame 751, and magnets 758 are fixedly connected to the outer surfaces of the plurality of fixing rods 753. A return spring 752 is fixedly connected to the front of the inner surface of the slide groove frame 751, and a push plate 757 slidably connected to the slide groove frame 751 is fixedly connected to the rear end of the return spring 752. A rectangular hole 754 is opened at the rear of the upper end of the slide groove frame 751, and a baffle 755 is symmetrically connected to the front and rear of the inner surface of the rectangular hole 754 for left-right rotation. The two baffles 755 are fixedly connected to the sides away from each other with spring pieces 756 fixedly connected to the slide groove frame 751.

[0032] During the implementation process, the fixing rods 753 are placed one by one into the slide groove frame 751, and the push plate 757 is pushed forward to squeeze the return spring 752 into a compressed state. Then, the fixing rods 753 are filled until the magnet 758 on the rear fixing rod 753 can be tightly attached to the rear part of the inner surface of the slide groove frame 751.

[0033] The magnet 758 on the fixing rod 753 mentioned above satisfies magnetic attraction.

[0034] For further information, see Figure 4 and Figure 6In this embodiment, the hammer mechanism 74 includes a fixed plate 741 fixedly connected to the right part of the inner surface of the device housing 1, the inner surface of the fixed plate 741 is rotatably connected to a transmission rod 742 rotatably connected to the device housing 1, the right part of the outer surface of the rotating roller 721 is fixedly connected to a one-way bearing 1 743, the right part of the outer surface of the transmission rod 742 and the outer surface of the one-way bearing 1 743 are commonly fixedly connected to a pulley group 3 744, the left part of the outer surface of the transmission rod 742 is fixedly connected to a connecting rod 7412, and the middle part of the upper end of the groove plate 731 is fixedly connected to a fixed block A slider 746 rotatably connected to the connecting rod 7412 is slidably connected to the inner surface of the fixed block 1 745, a rack 747 is fixedly connected to the rear end of the slider 2 746, a connecting block 1 748 is symmetrically fixedly connected to the left and right rear part of the upper end of the device housing 1, the inner surfaces of the two connecting blocks 1 748 are rotatably connected to a rotating rod 2 749 together, a gear 2 7410 meshingly connected to the rack 747 is fixedly connected to the middle part of the outer surface of the rotating rod 2 749, and a hammer plate 7411 is fixedly connected to the left and right parts of the outer surface of the rotating rod 2 749.

[0035] During the implementation process, when the measuring rope 6 is being relaxed, the rotation of the rotating roller 721 will drive the transmission rod 742 to rotate under the coordinated transmission action of the one-way bearing 1 743 and the pulley group 3 744, driving the connecting rod 7412 to rotate, so that the slider 2 746 makes a back-and-forth reciprocating motion on the inner surface of the fixed block 1 745, driving the rack 747 to reciprocate. Since the rack 747 is meshed with the gear 2 7410, the hammer plate 7411 is lifted upward when the rack 747 moves backward, and the hammer plate 7411 moves downward when the rack 747 moves forward, so that the hammer block at the lower end of the hammer plate 7411 can be By striking the upper end of the fixing rod 753, under the action of the hammer plate 7411, the magnet 758 on the fixing rod 753 will be separated from the magnet 758 on the fixing rod 753 in front, and at the same time, the magnet 758 on the struck fixing rod 753 will be subjected to a downward force, thereby squeezing the two baffles 755 away from each other and deforming the spring piece 756, and at the same time, the lower end of the fixing rod 753 will be inserted into the soil and fix the measuring rope 6 to the ground, so that the measuring rope 6 can be close to the ground, effectively avoiding the shaking of the measuring rope 6 and improving the stability, which can improve the accuracy of the measurement and reduce the deviation of the measurement results, and at the same time better adapt to terrain changes.

[0036] The pulley group three 744 mentioned above is composed of two pulleys and a belt.

[0037] The connecting rod 7412 mentioned above is a mature transmission structure in the prior art. In this solution, it is used to change the rotational motion of the transmission rod 742 into the linear motion of the slider 2 746, and its structure and principle will not be explained again.

[0038] Embodiment 2: Based on Embodiment 1, this embodiment adds a cleaning component 8 for cleaning the dirt on the outer surface of the used measuring rope 6, so as to achieve the purpose of cleaning the dirt attached to the outer surface of the used measuring rope 6.

[0039] Specifically, in order to clean the dirt attached to the outer surface of the measuring rope 6 after use, refer to Figure 3 , Figure 4 , Fig. 9 , Fig.10 and Fig.11 In this embodiment, the cleaning component 8 includes a one-way bearing 812 fixedly connected to the right portion of the outer surface of the upper rotating rod 725, a cleaning mechanism 81 is provided on the inner surface of the device housing 1, and a scraping mechanism 82 is provided on the rear portion of the inner surface of the device housing 1.

[0040] For further information, see Figure 4 and Fig.10 In this embodiment, the cleaning mechanism 81 includes two rotating rods 3 811 rotatably connected to the left and right parts of the inner surface of the device housing 1, a brush 815 is fixedly connected to the middle part of the outer surface of the rotating rod 3 811, the outer surface of the one-way bearing 2 812 and the right part of the upper rotating rod 3 811 are jointly fixedly connected with a pulley group 4 813, and the right parts of the outer surfaces of the two rotating rods 3 811 are fixedly connected with meshing gears 3 814.

[0041] During implementation, after the land area is measured, when the measuring rope 6 is reeled in by the retracting mechanism 72, the rotation of the rotating rod 1 725 will drive the rotating rod 3 811 at the upper portion to rotate under the cooperation of the one-way bearing 2 812 and the pulley group 4 813, and the rotating rod 3 811 at the lower portion is driven to rotate through the meshing action of the gear 3 814, so that the two brushes 815 rotate to clean the soil attached to the outer surface of the measuring rope 6 after use, so as to prevent soil or other impurities from adhering to the measuring rope 6 and changing the actual length or shape of the measuring rope 6. Such changes may have a significant impact on the measurement results. Cleaning the soil can ensure the accurate size of the measuring rope 6, thereby improving the accuracy of the measurement.

[0042] The one-way bearing 1 743 and the one-way bearing 2 812 mentioned above are mature one-way rotating parts in the prior art. This scheme utilizes their function of being able to rotate freely in one direction and being locked in the other direction. In this scheme, the locking directions of the one-way bearing 1 743 and the one-way bearing 2 812 are opposite, and their structure and principle will not be elaborated on.

[0043] The pulley group four 813 mentioned above is composed of two pulleys and a belt.

[0044] For further information, see Figure 3 , Figure 4 and Fig.11 In this embodiment, the scraping mechanism 82 includes an L-shaped plate 821 fixedly connected to the rear and lower parts of the inner surface of the device housing 1. Two scrapers 822 are linearly distributed and fixedly connected to the rear end of the L-shaped plate 821. The cross-sections of the two scrapers 822 are triangular. A rectangular hole 823 is opened on the rear side of the lower part of the inner surface of the device housing 1.

[0045] During the implementation process, a certain amount of dirt and debris will be attached to the outer surface of the brush 815 for cleaning the measuring rope 6. As the brush 815 rotates with the rotating rod three 811, it will collide with the scraper 822, so that the triangular scraper 822 can scrape the brush 815, thereby cleaning the dirt and debris attached to the brush 815, and at the same time discharge them from the inside of the device housing 1 through the rectangular hole two 823, thereby improving the cleaning effect of the brush 815 on the measuring rope 6 and improving the accuracy of the measurement.

[0046] Working process: when in use, one end of the measuring rope 6 is fixed by the fixing cone 5, and then the measuring rope 6 is put into the device housing 1 through the cooperation of the retracting mechanism 72 and the reciprocating mechanism 73, and the device housing 1 is pulled to move. Under the action of the pressing mechanism 76, the measuring rope 6 is always in close contact with the ground. At the same time, under the cooperation of the hammer mechanism 74 and the limiting mechanism 75, the measuring rope 6 is fixed in the soil while being released, so that the measuring rope 6 can be close to the ground, thereby improving the accuracy of measurement. The land area is calculated by reading and recording the extended length of the measuring rope 6. After the measurement is completed, when the measuring rope 6 is being rolled up, the cleaning mechanism 81 and the scraping mechanism 82 cooperate to clean the soil and debris attached to the outer surface of the measuring rope 6 to ensure the accurate size of the measuring rope 6, thereby improving the accuracy of measurement.

[0047] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A land area measuring device for land resources survey, comprising a device housing (1) and a fixed cone (5), characterized in that: Universal wheels (2) are fixedly connected at the four corners of the lower end of the device housing (1), a handle (3) is fixedly connected to the front end of the device housing (1), a cover plate (4) is fixedly installed at the upper end of the device housing (1), a measuring rope (6) is fixedly connected to the outer surface of the fixed cone (5), a retractable fixing component (7) is jointly provided on the inner surface and the rear end of the device housing (1), and a cleaning component (8) is provided on the inner surface of the device housing (1) behind the retractable fixing component (7).

2. A land area measuring device for land and resources survey according to claim 1, characterized in that: The retractable fixing assembly (7) comprises an energy storage battery (71) fixedly mounted on the front side of the lower portion of the inner surface of the device housing (1); a retractable mechanism (72) is provided on the inner surface of the device housing (1); a reciprocating mechanism (73) is provided on the inner surface of the device housing (1) above the retractable mechanism (72); a hammer mechanism (74) is provided on the inner surface and the rear portion of the upper end of the device housing (1); a limiting mechanism (75) is provided in the middle portion of the rear end of the device housing (1); and a pressing mechanism (76) is provided on the rear end of the device housing (1) below the limiting mechanism (75).

3. A land area measuring device for land and resources survey according to claim 2, characterized in that: The retractable mechanism (72) comprises a rotating roller (721) penetrating the right end of the device housing (1) and extending to the left end of the device housing (1) for rotational connection; the left end of the rotating roller (721) is fixedly connected to a servo motor (722) fixedly connected to the device housing (1); the right end of the device housing (1) penetrates and extends to the left end of the device housing (1) for rotational connection to a reciprocating rod (723); the left part of the outer surface of the rotating roller (721) and the left part of the outer surface of the reciprocating rod (723) are fixedly connected to a pulley group 1 (724); The left and right parts of the inner surface of the shell (1) are linearly distributed and connected to two rotating rods (725) for rotation. The middle parts of the outer surfaces of the two rotating rods (725) are fixedly connected to a rubber ring (726). The left parts of the outer surfaces of the two rotating rods (725) are fixedly connected to a meshing gear (728). The left part of the outer surface of the reciprocating rod (723) and the left part of the outer surface of the rotating rod (725) at the bottom are fixedly connected to a pulley group (727). The outer surface of the rotating roller (721) is wound and connected to the measuring rope (6).

4. The land area measuring device for land and resources survey according to claim 2, characterized in that: The reciprocating mechanism (73) comprises a groove plate (731) fixedly connected to the inner surface of the device housing (1); the inner surface of the groove plate (731) is slidably connected to a slider 1 (732) slidably connected to the outer surface of the reciprocating rod (723); the lower end of the slider 1 (732) is fixedly connected to a rectangular frame (733); the left and right parts of the inner surface of the rectangular frame (733) are symmetrically rotatably connected to limit wheels (734).

5. A land area measuring device for land and resources survey according to claim 4, characterized in that: The hammer mechanism (74) comprises a fixing plate (741) fixedly connected to the right portion of the inner surface of the device housing (1); the inner surface of the fixing plate (741) is rotatably connected to a transmission rod (742) rotatably connected to the device housing (1); the right portion of the outer surface of the rotating roller (721) is fixedly connected to a one-way bearing (743); the right portion of the outer surface of the transmission rod (742) and the outer surface of the one-way bearing (743) are jointly fixedly connected to a pulley group (744); the left portion of the outer surface of the transmission rod (742) is fixedly connected to a connecting rod (7412); the middle portion of the upper end of the groove plate (731) is fixedly connected to a fixing block (745); ), the inner surface of the fixed block 1 (745) is slidably connected to a slider 2 (746) rotatably connected to the connecting rod (7412), the rear end of the slider 2 (746) is fixedly connected to a rack (747), the upper rear end of the device housing (1) is symmetrically fixedly connected to a connecting block 1 (748), the inner surfaces of the two connecting blocks 1 (748) are rotatably connected to a rotating rod 2 (749), the middle part of the outer surface of the rotating rod 2 (749) is fixedly connected to a gear 2 (7410) meshing with the rack (747), and the left and right parts of the outer surface of the rotating rod 2 (749) are fixedly connected to a hammer plate (7411).

6. The land area measuring device for land and resources survey according to claim 2, characterized in that: The limiting mechanism (75) comprises a slide groove frame (751) fixedly connected to the rear end of the device housing (1); a plurality of fixing rods (753) are movably mounted on the inner surface of the slide groove frame (751); the outer surfaces of the plurality of fixing rods (753) are fixedly connected to magnets (758); a return spring (752) is fixedly connected to the front of the inner surface of the slide groove frame (751); the rear end of the return spring (752) is fixedly connected to a push plate (757) slidably connected to the slide groove frame (751); a rectangular hole 1 (754) is provided at the rear end of the upper end of the slide groove frame (751); baffles (755) are symmetrically rotatably connected to the front and rear of the inner surface of the rectangular hole 1 (754); and spring plates (756) are fixedly connected to the slide groove frame (751) on the sides away from each other.

7. The land area measuring device for land and resources survey according to claim 2, characterized in that: The pressing mechanism (76) comprises a second connecting block (761) fixedly connected to the rear end of the device housing (1); a spring telescopic rod (762) is fixedly connected to the lower end of the second connecting block (761); the lower end of the spring telescopic rod (762) is fixedly connected to a second fixing block (763); and a roller (764) is rotatably connected to the inner surface of the second fixing block (763).

8. The land area measuring device for land and resources survey according to claim 3, characterized in that: The cleaning assembly (8) comprises a one-way bearing (812) fixedly connected to the right portion of the outer surface of the upper rotating rod (725), a cleaning mechanism (81) is arranged on the inner surface of the device housing (1), and a scraping mechanism (82) is arranged at the rear portion of the inner surface of the device housing (1).

9. A land area measuring device for land and resources survey according to claim 8, characterized in that: The cleaning mechanism (81) comprises two rotating rods (811) rotatably connected to the left and right parts of the inner surface of the device housing (1); a brush (815) is fixedly connected to the middle part of the outer surface of the rotating rod (811); the outer surface of the one-way bearing (812) and the right part of the upper rotating rod (811) are fixedly connected to a pulley set (813); and the right parts of the outer surfaces of the two rotating rods (811) are fixedly connected to meshing gears (814).

10. The land area measuring device for land resources survey according to claim 8, characterized in that: The scraping mechanism (82) comprises an L-shaped plate (821) fixedly connected to the rear and lower parts of the inner surface of the device housing (1); two scrapers (822) are linearly distributed and fixedly connected to the rear end of the L-shaped plate (821); the two scrapers (822) have triangular cross-sections; and a second rectangular hole (823) is provided on the rear side of the lower part of the inner surface of the device housing (1).

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