Land area measuring device for land planning and design

Abstract

The invention relates to the technical field of land planning measurement, and particularly discloses a land area measuring device for land planning design, which comprises a measuring instrument body, a square groove is formed in the front surface of the measuring instrument body, a display screen is fixedly mounted at the upper end of the inner side of the square groove, and an empty groove is fixedly mounted at the lower end of the display screen in the square groove; when the measuring instrument falls accidentally, the measuring instrument can be contacted through the elastic front frame when the front touches the ground, the measuring instrument can be contacted through the elastic rear frame when the back touches the ground, and the lengths of the elastic front frame and the elastic rear frame are larger than that of the detector body, so that the measuring instrument can be contacted through the elastic front frame or the elastic rear frame even if the top or the bottom of the measuring instrument body touches the ground; according to the measuring instrument, the elastic front frame and the elastic rear frame are used for buffering and anti-seismic protection, meanwhile, when the measuring instrument is in contact with the ground, the buffering springs are matched with the dampers for damping buffering, the good buffering protection effect is achieved, and the high protection effect on the measuring instrument body can be achieved.

Description

Technical Field

[0001] This invention relates to the field of land planning and surveying technology, and in particular to a land area measuring device for land planning and design. Background Technology

[0002] Land planning refers to the process of rationally utilizing and coordinating land resources within a certain area. It includes planning for land's functional positioning, spatial layout, land use structure, and land use patterns. The purpose of land planning is to achieve the rational allocation of land resources, improve land use efficiency, and promote economic and social development and ecological environmental protection. It can guide the development of different areas such as cities, rural areas, and industrial parks, ensuring the rationality and sustainability of land use.

[0003] Most existing land area measuring devices are in a bare state, with no protection for the buttons. When area measurement is needed, one only needs to put the measuring device in a pocket and walk around the land to take the measurement. However, the measuring device in the pocket may accidentally press the button area due to hand or other objects inside the pocket while walking, affecting the measurement and reducing work efficiency. In addition, after a long period of use, dust accumulates on the display screen of the existing measuring devices. If it is not cleaned for a long time, the display screen may become unclear, affecting data observation, reducing the lifespan of the measuring device, and making it inconvenient to use.

[0004] Chinese Patent Publication No. CN214149225U discloses a land area measuring device for land planning and design, which includes a measuring instrument body with an L-shaped sliding block fixedly installed on the outer surface of the measuring instrument body. When the button area needs protection, the device works by first pulling a pull ring to move a connecting block, causing a first spring to contract and the left-side locking block to disengage from the connecting block. Then, a first slider moves a cover plate. Just as the first slider is about to engage with the right-side locking block, pulling the pull ring moves the connecting block until the right-side locking block is fully engaged with the rectangular groove. Then, the pull ring is released, and under the elastic force of the first spring, the right-side locking block engages with the connecting block. Supported by the support block, the button area is effectively protected, preventing workers from accidentally pressing the buttons while the measuring instrument body is in their pockets, thus affecting measurement and reducing work efficiency.

[0005] While the aforementioned device can clean and prevent dust from the front of the measuring instrument during use, it still has certain shortcomings. Firstly, the main testing method of the measuring instrument is to manually hold it and go to the location to be measured. Land planning often requires field testing, and the device is very easy to drop during manual testing. The aforementioned device obviously lacks a drop protection function and is very easy to be damaged. At the same time, the display screen and control buttons on the front require manual operation to open, which means that during measurement, one hand holds the device while the other hand is adjusting the locking mechanism. Manual operation is cumbersome and inconvenient, and the measurement is complicated. Overall, the protective performance is still insufficient, so it needs to be improved. Summary of the Invention

[0006] The purpose of this invention is to provide a land area measurement device for land planning and design, so as to solve the problems mentioned in the background art, such as the lack of protective anti-fall function during use and the cumbersome and inconvenient overall manual operation.

[0007] To achieve the above objectives, the present invention provides a land area measuring device for land planning and design, comprising a measuring instrument body, a square groove on the front of the measuring instrument body, a display screen fixedly installed at the upper inner side of the square groove, an empty slot fixedly installed at the lower end of the display screen within the square groove, a control keyboard fixedly installed inside the empty slot, a displacement mechanism provided on the inner and outer sides of the square groove, a front cover fixedly installed on the inner side of the displacement mechanism, the front cover being slidably connected to the inner side of the square groove, a buffer mechanism fixedly installed on the outer side of the front cover, the buffer mechanism being slidably connected to the outer side of the measuring instrument body, a drive assembly fixedly installed at the top front end of the measuring instrument body, the bottom two sides of the drive assembly being fixedly connected to the top two sides of the displacement mechanism, a cleaning assembly fixedly installed at the upper end of the front cover, and a battery disposed inside the measuring instrument body.

[0008] In a further embodiment, a face recognition probe is fixedly installed at the upper center of the front of the measuring instrument body, and a control module is fixedly installed on the inner side of the measuring instrument body.

[0009] In a further embodiment, a bending connecting rod is fixedly installed on the top of the measuring instrument body, and a handrail is fixedly installed on the rear end of the bending connecting rod. An anti-slip sleeve is fixedly installed on the outer surface of the handrail, and anti-slip textures are provided at equal intervals on the outer surface of the anti-slip sleeve.

[0010] In a further embodiment, the displacement mechanism includes a slide groove, which is formed on both sides of the front end of the square groove. A lead screw is rotatably connected to the inner side of the slide groove, and a sliding plate is threaded to the outer surface of the lead screw. The inner side of the sliding plate is fixedly connected to both sides of the front cover.

[0011] In a further embodiment, the drive assembly includes a top shell, which is fixedly installed on the top front end of the measuring instrument body. Both ends of the inner side of the top shell are rotatably connected to transmission pulleys, which are connected to each other by a transmission belt. A micro motor is fixedly installed on one side of the top of the top shell. The output end of the micro motor is fixedly connected to the top of one of the two sets of transmission pulleys. The upper end of the lead screw passes through the middle of the bottom of the measuring instrument body and the transmission pulleys and is fixedly connected to each other by a transmission belt.

[0012] In a further embodiment, the cleaning component includes a concave seat and a rectangular groove. The rectangular groove is formed at the upper end of the front cover. The concave seat is fixedly installed on the upper front end of the front cover. Telescopic springs are fixedly installed at equal intervals on the inner side of the concave seat. A cleaning plate is fixedly installed at the rear end of the telescopic spring. Rubber scrapers are fixedly installed at equal intervals on the back side of the cleaning plate. The back side of the rubber scraper is in contact with the front side of the display screen.

[0013] In a further embodiment, three sets of support shafts are fixedly installed at equal intervals on the front side of the cleaning plate, the front ends of the three sets of support shafts all pass through concave seats, and the telescopic springs are all sleeved on the outside of the support shafts.

[0014] In a further embodiment, the buffer mechanism includes connecting rods fixedly installed on both sides of the bottom of the front cover. The side of the connecting rods is U-shaped. A base plate is fixedly installed between the inner rear ends of the connecting rods. A buffer assembly is fixedly installed on the back of the base plate. An elastic rear frame is fixedly installed on the outer side of the buffer assembly. An elastic front frame is fixedly installed on the front of the elastic rear frame. Both the elastic rear frame and the elastic front frame are made of spring steel. The elastic rear frame and the elastic front frame are slidably connected to the outer side of the measuring instrument body.

[0015] In a further embodiment, the buffer assembly includes a buffer spring, which is fixedly installed at the four corners of the back side of the substrate. A back plate is fixedly installed at the rear end of the buffer spring, and the elastic rear frame is fixedly installed on the outside of the back plate.

[0016] In a further embodiment, a photovoltaic panel is fixedly installed on the back side of the back plate, and dampers are fixedly installed at the four corners of the front side of the back plate, with the buffer springs all sleeved on the outside of the dampers.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] Firstly, in this invention, a micro motor synchronously drives the lead screw inside the slide to rotate. The synchronous rotation of the two sets of lead screws drives the slide plate to move the front cover up and down. When it needs to be taken out for testing during use, the front of the measuring instrument body can be aligned with the face of the person. At this time, the face recognition probe captures the face, and the control module receives the information recognized by the face recognition probe. The control module can then start the micro motor to run. This allows the device to be operated by simply holding the handrail with the measuring instrument body facing the face, without the need for manual adjustment or opening. This facilitates quick operation and measurement, saving the device a whole day's worth of operating steps and improving ease of operation.

[0019] Secondly, in this invention, if the measuring instrument is accidentally dropped, it can be contacted by the elastic front frame if it lands face-down, and by the elastic rear frame if it lands back-down. Both the elastic front and rear frames are longer than the instrument body, ensuring contact even if the instrument body lands on its top or bottom. This provides cushioning and shock absorption. Furthermore, upon contact with the ground, a buffer spring combined with a damper provides damping, resulting in effective cushioning and protection for the measuring instrument body.

[0020] Thirdly, in this invention, when the drive assembly drives the lead screw to rotate, the lead screw drives the slide plate to move the front cover. Each time the front cover is opened, the movement of the front cover can drive the concave seat to move. The movement of the concave seat can drive the rubber scraper on the cleaning plate on the back of the telescopic spring to scrape the display screen, which can play a good role in cleaning and dust prevention, and can prevent dust and impurities from adhering to the display screen. At the same time, during the cleaning process, the telescopic spring is used to reset and resist the rubber scraper to stably adhere to the display screen, which can improve the scraping friction and clean the display screen more efficiently. Attached Figure Description

[0021] Figure 1 This is a front view structural diagram of the present invention;

[0022] Figure 2 This is a schematic diagram of the rear view structure in this invention;

[0023] Figure 3 This is a schematic diagram of the front cover opening structure in this invention;

[0024] Figure 4 This is a schematic diagram of the front cover opening and rear view structure in this invention;

[0025] Figure 5 This is a side view of the buffer mechanism in this invention.

[0026] Figure 6 This is a bottom view of the buffer mechanism in this invention.

[0027] Figure 7This is a schematic diagram of the structure viewed from below in this invention;

[0028] Figure 8 This is a schematic diagram of the driving component in this invention;

[0029] Figure 9 This is a schematic diagram of the cleaning component in this invention;

[0030] Figure 10 In this invention Figure 5 A magnified structural diagram at point A;

[0031] Figure 11 This is a schematic diagram of the system module connection structure in this invention.

[0032] In the diagram: 1. Measuring instrument body; 2. Square groove; 3. Display screen; 4. Empty groove; 5. Control keyboard; 6. Displacement mechanism; 61. Slide groove; 62. Lead screw; 63. Slide plate; 7. Front cover; 8. Buffer mechanism; 81. Connecting rod; 82. Base plate; 83. Buffer assembly; 831. Buffer spring; 832. Back plate; 833. Photovoltaic panel; 834. Damper; 84. Elastic rear frame; 85. Elastic front frame; 9. Drive assembly; 91. Top shell; 92. Transmission pulley; 93. Micro motor; 10. Cleaning assembly; 101. Concave seat; 102. Rectangular groove; 103. Telescopic spring; 104. Cleaning plate; 105. Rubber scraper; 106. Support shaft; 11. Anti-slip sleeve; 12. Face recognition probe; 13. Bending connecting rod; 14. Handrail. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] Please see Figures 1-11In this embodiment of the invention, a land area measuring device for land planning and design is provided. The measuring range of this device is 1㎡-1000㎡, the measuring accuracy can reach 0.001㎡, the sampling frequency of this device is 10Hz, the power supply requirement is 12V, and the dimensions of this device are 100mm x 50mm. The device measures 20mm x and weighs 250g. Its operating temperature range is -10-50℃. The device includes a measuring instrument body 1. A square groove 2 is formed on the front of the measuring instrument body 1. A display screen 3 is fixedly installed on the upper inner side of the square groove 2. A hollow groove 4 is fixedly installed below the display screen 3 inside the square groove 2. A control keyboard 5 is fixedly installed inside the hollow groove 4. A displacement mechanism 6 is provided on both the inner and outer sides of the square groove 2. A front cover 7 is fixedly installed on the inner side of the displacement mechanism 6 and slidably connected to the inner side of the square groove 2. A buffer mechanism 8 is fixedly installed on the outer side of the front cover 7 and slidably connected to the outer side of the measuring instrument body 1. A drive assembly 9 is fixedly installed at the top front end of the measuring instrument body 1. The bottom two sides of the drive assembly 9 are fixedly connected to the top two sides of the displacement mechanism 6. A cleaning assembly 10 is fixedly installed at the upper end of the front cover 7. A battery is installed inside the measuring instrument body 1.

[0035] Please see Figure 1 and Figure 3 A face recognition probe 12 is fixedly installed in the middle of the upper front of the measuring instrument body 1, and a control module is fixedly installed on the inner side of the measuring instrument body 1. By setting the face recognition probe 12, the face recognition probe 12 can assist in capturing a person's face during use. When a person's face is captured, the control module can control the drive component 9 to operate, which can automatically drive the displacement component to open the front cover 7 in a timely manner, facilitating the measurement operation of this device. This allows the device to open automatically when it is needed for operation. The setting of the face recognition probe 12 can avoid the situation where the device accidentally opens due to accidentally capturing other parts of the human body during use, thereby improving the overall stability of the device during use.

[0036] Please see Figures 1-4 A bending connecting rod 13 is fixedly installed on the top of the measuring instrument body 1, and a handrail 14 is fixedly installed at the rear end of the bending connecting rod 13. An anti-slip sleeve 11 is fixedly installed on the outer surface of the handrail 14, and anti-slip textures are provided at equal intervals on the outer surface of the anti-slip sleeve 11. By setting the bending connecting rod 13 and the handrail 14 at its rear end, the handrail 14 can be held during use, making the device convenient to use. At the same time, the anti-slip sleeve 11 can improve the stability of the device when held. During use, the front cover 7 can be moved out by holding the handrail 14, or the protective mechanism can be held by holding the device to start the device and extend the measuring instrument from the inside of the buffer mechanism 8, making the overall operation of the device more convenient. By setting the anti-slip texture, the friction of the outer surface of the handrail 14 can be further improved during use, making the stability of the hand holding the handrail 14 stronger and preventing the device from being accidentally dropped.

[0037] Please see Figures 1-4 and Figure 7 The displacement mechanism 6 includes a slide groove 61, which is located on both sides of the front end of the square groove 2. A lead screw 62 is rotatably connected to the inner side of the slide groove 61, and a sliding plate 63 is threadedly connected to the outer surface of the lead screw 62. The inner side of the sliding plate 63 is fixedly connected to both sides of the front cover 7. By setting the displacement mechanism 6, during use, the drive assembly 9 can be activated to drive the lead screw 62. The lead screw 62 drives the plate to slide within the slide groove 61, thus assisting in opening or closing the front cover 7. This allows the device to quickly open and close the front cover 7, facilitating flexible operation and improving overall ease of use. The device can automatically open the front cover 7 without manual intervention, further enhancing user convenience.

[0038] Please see Figures 1-3 and Figure 7 The drive assembly 9 includes a top shell 91, which is fixedly installed on the top front end of the measuring instrument body 1. Both ends of the inner side of the top shell 91 are rotatably connected to transmission pulleys 92, which are connected by a transmission belt. A micro motor 93 is fixedly installed on one side of the top of the top shell 91. The output end of the micro motor 93 is fixedly connected to the top of one of the two sets of transmission pulleys 92. The upper end of the lead screw 62 passes through the middle of the bottom of the measuring instrument body 1 and the transmission pulleys 92, which are then fixedly connected. The transmission pulleys 92 are connected to each other by a transmission belt. By setting the drive assembly 9, the device can... During use, the micro motor 93 drives the transmission pulleys 92 at both ends inside the top shell 91 to rotate. The rotation of the transmission pulleys 92 causes the transmission belt to drive both sets of transmission pulleys 92 to rotate. The rotation of both sets of transmission pulleys 92 can assist in synchronously driving the two sets of lead screws 62 to rotate, thereby making the slide plate 63 slide more stably on the inner side of the slide groove 61. This allows for more stable driving of the front cover 7 to move back and forth, facilitating quick opening or closing of the front cover 7. As a result, the device is easy to operate, highly practical, and saves a lot of measurement time, thus improving measurement efficiency.

[0039] Please see Figure 1 , Figure 3 and Figure 9The cleaning assembly 10 includes a concave seat 101 and a rectangular groove 102. The rectangular groove 102 is located at the upper end of the front cover 7. The concave seat 101 is fixedly installed on the upper front side of the front cover 7. Telescopic springs 103 are fixedly installed at equal intervals on the inner side of the concave seat 101. A cleaning plate 104 is fixedly installed at the rear end of the telescopic springs 103. Rubber scrapers 105 are fixedly installed at equal intervals on the back side of the cleaning plate 104. The back side of the rubber scrapers 105 is in contact with the front side of the display screen 3. By setting the cleaning assembly 10, during use, when the lead screw 62 drives the sliding plate 63 to slide and move the front cover 7, the concave seat 101 can be moved by the front cover 7. The seat 101 moves back and forth. Since the concave seat 101 is located at the top of the display screen 3, the downward movement of the concave seat 101 can drive the cleaning plate 104 and the rubber scraper 105 inside the concave seat 101 to move downward. Since the front of the cleaning plate 104 and the rubber scraper 105 are provided with a telescopic spring 103, the telescopic spring 103 can assist in driving the cleaning plate 104 to move forward. The movement of the cleaning plate 104 can assist in driving the rubber scraper 105 to move. The movement of the rubber scraper 105 can make the rubber scraper 105 fit against the display screen 3, so that the rubber scraper 105 can better scrape the display screen 3 when it moves downward, thus improving the cleaning effect.

[0040] Please see Figure 1 , Figure 3 and Figure 9 Three sets of support shafts 106 are fixedly installed at equal intervals on the front side of the cleaning plate 104. The front ends of the three sets of support shafts 106 all pass through the concave seat 101, and the telescopic springs 103 are all sleeved on the outside of the support shafts 106. By setting three sets of support shafts 106, the cleaning plate 104 can be reinforced by the support shafts 106, so that the cleaning plate 104 can move up and down stably, and the telescopic springs 103 can be prevented from swaying laterally.

[0041] Please see Figures 1-6 and Figure 9 The buffer mechanism 8 includes a connecting rod 81, which is fixedly installed on both sides of the bottom of the front cover 7. The side of the connecting rod 81 is U-shaped. A base plate 82 is fixedly installed between the inner rear ends of the connecting rod 81. A buffer assembly 83 is fixedly installed on the back of the base plate 82. An elastic rear frame 84 is fixedly installed on the outer side of the buffer assembly 83. An elastic front frame 85 is fixedly installed on the front of the elastic rear frame 84. Both the elastic rear frame 84 and the elastic front frame 85 are made of spring steel and are slidably connected to the outer side of the measuring instrument body 1. By setting the buffer mechanism 8, when the device is dropped during use, it can be protected by the elastic front frame 85 and the elastic rear frame 84. The elastic force of the elastic front frame 85 and the elastic rear frame 84 can provide impact protection. At this time, the buffer assembly 83 provides further cushioning, which can prevent the device from being damaged when it falls to the ground and improve the overall stability and service life of the device.

[0042] Please see Figures 1-6 and Figure 9 The buffer assembly 83 includes a buffer spring 831, which is fixedly installed at the four corners of the back of the base plate 82. A back plate 832 is fixedly installed at the rear end of the buffer spring 831, and an elastic rear frame 84 is fixedly installed on the outside of the back plate 832. By setting the buffer spring 831, when the device is dropped, the buffer spring 831 can work in conjunction with the back plate 832 to buffer and reduce shock, thereby playing a good buffering and protection role and preventing the measuring instrument body 1 from being damaged by falling.

[0043] Please see Figures 1-6 and Figure 9 A photovoltaic panel 833 is fixedly installed on the back of the back plate 832, and a damper 834 is fixedly installed at each of the four corners on the front of the back plate 832. The buffer springs 831 are all sleeved on the outside of the damper 834. By setting up the photovoltaic panel 833, the photovoltaic panel 833 can be used to convert electricity into power to supply the equipment during use, which can improve the overall endurance of the device. The damper 834 can assist in damping and buffering, which can improve the buffering and shock resistance effect.

[0044] The working principle of this invention is as follows: During use, the micro motor 93 drives the transmission pulley 92 to rotate. The rotation of the transmission pulley 92 drives another set of transmission pulleys 92 to rotate via the transmission belt. When both sets of transmission pulleys 92 rotate, they simultaneously drive the lead screw 62 inside the slide groove 61. The simultaneous rotation of the two lead screws 62 assists in driving the slide plate 63 to slide inside the slide groove 61. The sliding of the slide plate 63 assists in moving the front cover 7 up and down. When the device needs to be removed for testing, the front of the measuring instrument body 1 can be aligned with the face. At this time, the face recognition probe 12 captures the face, and the control module receives the information recognized by the face recognition probe 12. The control module then starts the micro motor 93 to run, thus... During operation, this device only requires holding the handle 14 with the measuring instrument body 1 facing the user's face; no manual adjustment or opening is required, facilitating quick and easy operation and saving numerous steps. The inclusion of a buffer mechanism 8 provides additional protection during use through the elastic front frame 85 and elastic rear frame 84. If the measuring instrument is accidentally dropped, it will be able to make contact with the front of the instrument upon impact (front-facing) or the back of the instrument upon impact (back-facing). Furthermore, both the elastic front frame 85 and elastic rear frame 84 are longer than the measuring instrument body, ensuring contact even if the top or bottom of the measuring instrument body 1 lands on the ground. 4. Buffering and shockproof protection are provided. Upon contact with the ground, the buffer spring 831, in conjunction with the damper 834, provides damping and buffering, thus achieving a good buffering and protective effect. This provides strong protection for the measuring instrument body 1. During use, when disassembly and maintenance are required, the front cover 7 can be moved and removed via the displacement mechanism 6, facilitating quick disassembly and assembly of the buffer mechanism 8 for convenient maintenance. Furthermore, a photovoltaic panel 833 is incorporated. When external power is insufficient, the front cover 7 can be moved forward by activating the displacement mechanism 6, allowing the photovoltaic panel 833 to assist in power storage, improving the device's endurance. The cleaning component 10 ensures that during use, when the drive component 9 drives the lead screw 62 to rotate, the lead screw... The drive plate 62 drives the front cover 7 to move. Each time the front cover 7 is opened, the movement of the front cover 7 drives the concave seat 101 to move. The movement of the concave seat 101 drives the rubber scraper 105 on the back cleaning plate 104 of the telescopic spring 103 to scrape the display screen 3, which can play a good role in cleaning and dust prevention, and can prevent dust and impurities from adhering to the display screen 3. At the same time, during the cleaning, the telescopic spring 103 returns to its original position to resist the rubber scraper 105 and stably adheres to the display screen 3, which can improve the scraping friction and clean the display screen 3 more efficiently. During the cleaning, the support shaft 106 is set to reinforce the support of the telescopic spring 103, which can improve the cleaning stability and improve the cleaning effect.

[0045] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0046] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A land area measuring device for land planning and design, characterized in that, The instrument includes a measuring instrument body (1), a square groove (2) is provided on the front of the measuring instrument body (1), a display screen (3) is fixedly installed on the upper inner side of the square groove (2), a hollow groove (4) is fixedly installed in the square groove (2) at the lower end of the display screen (3), a control keyboard (5) is fixedly installed on the inner side of the hollow groove (4), a displacement mechanism (6) is provided on the inner and outer sides of the square groove (2), a front cover (7) is fixedly installed on the inner side of the displacement mechanism (6), the front cover (7) is slidably connected to the inner side of the square groove (2), a buffer mechanism (8) is fixedly installed on the outer side of the front cover (7), the buffer mechanism (8) is slidably connected to the outer side of the measuring instrument body (1), a drive assembly (9) is fixedly installed on the top front end of the measuring instrument body (1), the bottom two sides of the drive assembly (9) and the top two sides of the displacement mechanism (6) are fixedly connected, a cleaning assembly (10) is fixedly installed on the upper end of the front cover (7), and a storage battery is provided inside the measuring instrument body (1).

2. The land area measuring device for land planning and design according to claim 1, characterized in that, A face recognition probe (12) is fixedly installed at the middle of the upper front of the measuring instrument body (1), and a control module is fixedly installed on the inner side of the measuring instrument body (1).

3. The land area measuring device for land planning and design according to claim 1, characterized in that, A bending connecting rod (13) is fixedly installed on the top of the measuring instrument body (1), and a handrail (14) is fixedly installed on the rear end of the bending connecting rod (13). An anti-slip sleeve (11) is fixedly installed on the outer surface of the handrail (14), and anti-slip patterns are provided at equal intervals on the outer surface of the anti-slip sleeve (11).

4. The land area measuring device for land planning and design according to claim 1, characterized in that, The displacement mechanism (6) includes a slide (61), which is opened on both sides of the front end of the square groove (2). The inner side of the slide (61) is rotatably connected to a lead screw (62), and the outer surface of the lead screw (62) is threadedly connected to a sliding plate (63). The inner side of the sliding plate (63) is fixedly connected to both sides of the front cover (7).

5. A land area measuring device for land planning and design according to claim 4, characterized in that, The drive assembly (9) includes a top shell (91), which is fixedly installed on the top front end of the measuring instrument body (1). Both ends of the inner side of the top shell (91) are rotatably connected to transmission pulleys (92). The transmission pulleys (92) are connected to each other by a transmission belt. A micro motor (93) is fixedly installed on one side of the top of the top shell (91). The output end of the micro motor (93) is fixedly connected to the top of one of the two sets of transmission pulleys (92). The upper end of the lead screw (62) passes through the middle of the bottom of the measuring instrument body (1) and the transmission pulley (92) and is fixedly connected. The transmission pulleys (92) are connected to each other by a transmission belt.

6. A land area measuring device for land planning and design according to claim 1, characterized in that, The cleaning assembly (10) includes a concave seat (101) and a rectangular groove (102). The rectangular groove (102) is opened at the upper end of the front cover (7). The concave seat (101) is fixedly installed on the upper front end of the front cover (7). A telescopic spring (103) is fixedly installed at equal intervals on the inner side of the concave seat (101). A cleaning plate (104) is fixedly installed at the rear end of the telescopic spring (103). A rubber scraper (105) is fixedly installed at equal intervals on the back side of the cleaning plate (104). The back side of the rubber scraper (105) is in contact with the front side of the display screen (3).

7. A land area measuring device for land planning and design according to claim 6, characterized in that, Three sets of support shafts (106) are fixedly installed at equal intervals on the front side of the cleaning plate (104). The front ends of the three sets of support shafts (106) all pass through the concave seat (101), and the telescopic springs (103) are all sleeved on the outside of the support shafts (106).

8. A land area measuring device for land planning and design according to claim 1, characterized in that, The buffer mechanism (8) includes a connecting rod (81), which is fixedly installed on both sides of the bottom of the front cover (7). The side of the connecting rod (81) is U-shaped. A base plate (82) is fixedly installed between the inner rear ends of the connecting rod (81). A buffer assembly (83) is fixedly installed on the back of the base plate (82). An elastic rear frame (84) is fixedly installed on the outer side of the buffer assembly (83). An elastic front frame (85) is fixedly installed on the front of the elastic rear frame (84). Both the elastic rear frame (84) and the elastic front frame (85) are made of spring steel. The elastic rear frame (84) and the elastic front frame (85) are slidably connected to the outer side of the measuring instrument body (1).

9. A land area measuring device for land planning and design according to claim 8, characterized in that, The buffer assembly (83) includes a buffer spring (831), which is fixedly installed at the four corners of the back of the base plate (82). A back plate (832) is fixedly installed at the rear end of the buffer spring (831), and the elastic rear frame (84) is fixedly installed on the outside of the back plate (832).

10. A land area measuring device for land planning and design according to claim 9, characterized in that, A photovoltaic panel (833) is fixedly installed on the back of the back plate (832), and a damper (834) is fixedly installed at each of the four corners of the front of the back plate (832). The buffer springs (831) are all sleeved on the outside of the damper (834).

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