A land surveying device for land management

Abstract

The present invention relates to the technical field of distance measuring wheels, and discloses a land surveying device for land management, comprising: a measuring instrument push rod, a wheel frame is arranged at the bottom of the measuring instrument push rod, a distance measuring wheel is arranged in the wheel frame, an electronic display screen is arranged on the measuring instrument push rod, and a marking mechanism is arranged on one side of the wheel frame, which is used to mark the smooth distance when the distance measuring wheel slips, so that the staff can quickly identify and return to the place where the distance measuring wheel starts to slip, so as to re-measure accurately, avoiding the measurement error caused by slipping. When the distance measuring wheel of the present invention slips on wet land, the powdered lime in the powder storage chamber is controlled by the internal control unit to be sprayed by the powder spraying head on the path where the distance measuring wheel slips, and the automatic spraying of lime can immediately mark the problem point, so that the staff can directly return to the point to re-measure, which greatly improves the work efficiency.

Description

Technical Field

[0001] The present invention relates to the field of distance measuring wheels, and more particularly to a land measuring device for land management. Background Art

[0002] In land management, the hand-push measuring wheel is widely used. In land planning and road construction, it is used to determine the length, width and boundary of the road. The hand-push measuring wheel for land management is a practical and efficient measuring tool with the characteristics of easy operation, high accuracy and wide application range. It plays an important role in land management, road construction, agriculture and forestry.

[0003] Gently push the digital distance measuring wheel and move it along the route to be measured. Keep the distance measuring wheel moving smoothly and avoid excessive impact or severe vibration to avoid affecting the accuracy of the measurement result. When the digital distance measuring wheel is pushed to the end point to be measured, the value displayed on the display is the measurement result.

[0004] However, in some cases, wet land may be accompanied by other safety hazards, such as equipment loss of control due to slippery conditions caused by mud. If the measuring wheel slips on wet land, workers may need to estimate the distance of the slip through repeated trials or rely on other methods (such as step measurement, visual inspection, etc.), which is not only time-consuming but also may be inaccurate. For this reason, we propose a land measurement device for land management. Summary of the invention

[0005] The present invention provides a land measurement device for land management, which solves the technical problem in the related art that if the measuring wheel slips on wet land, the staff may need to estimate the slipping distance through repeated experiments or rely on other methods (such as walking measurement, visual inspection, etc.), which is not only time-consuming but also may be inaccurate.

[0006] The invention provides a land surveying device for land management, comprising: a surveying instrument push rod, a wheel frame is arranged at the bottom of the surveying instrument push rod, a distance measuring wheel is arranged in the wheel frame, an electronic display screen is arranged on the surveying instrument push rod, and a marking mechanism is arranged on one side of the wheel frame, which is used to mark the smooth distance when the distance measuring wheel slips, so that the staff can quickly identify and return to the place where the distance measuring wheel starts to slip, so as to re-measure accurately, thereby avoiding the measurement error caused by the slip;

[0007] The marking mechanism includes a marking box, the interior of which is divided into a powder storage chamber and an air pressure chamber, and a powder spraying head is provided at the discharge port of the powder storage chamber;

[0008] An inner control is arranged at the center of the marking box. The inner control comprises a turntable fixedly connected to the rotating shaft of the distance measuring wheel, and is used for real-time monitoring whether the distance measuring wheel is in a rotating or smooth state during operation.

[0009] Furthermore, a closing door is rotatably provided at the top of the powder storage chamber, an expansion airbag is provided in the middle of the air pressure chamber, the internal space of the expansion airbag is an air storage chamber, the external space of the expansion airbag is a pressure relief chamber, and an inflation valve core is fixedly provided on one side of the closing door at the top of the powder storage chamber, and the inflation valve core is connected to the air storage chamber through a pipe.

[0010] Furthermore, an air outlet end of the air storage chamber is fixedly connected to an injection valve, and two ventilation pipes are provided at the air outlet end of the injection valve. An injection head fixed to the inner wall of the powder spray head is provided at one end of the two ventilation pipes away from the injection valve. The injection heads are connected to the air storage chamber through the ventilation pipes and the injection valve, and the injection direction of the two injection heads is the same as the powder outlet direction of the powder spray head.

[0011] Furthermore, a blocking plate is slidingly arranged inside the jet valve, a spring is fixedly arranged on the top for always applying a downward thrust to the blocking plate, and a control line 2 running through the jet valve is also arranged on the blocking plate, and a control line 1 running through the jet valve is arranged at the bottom of the blocking plate.

[0012] Furthermore, the internal control unit also includes a central control round box fixedly connected to the marking box, and an arc-shaped spring piece is fixedly provided on the inner bottom wall of the central control round box at a position perpendicular to the ground, and one end of the spring piece in the forward direction of the ranging wheel is fixedly connected to the inner wall of the central control round box, and the other end is not connected to the inner wall of the central control round box, and the end of the spring piece that is not connected to the inner wall of the central control round box is connected to control line 2.

[0013] Furthermore, a plurality of contraction grooves are provided on the outer wall of the turntable, and a telescopic head is slidably arranged inside the contraction groove. The telescopic head and the turntable form a telescopic structure, and the fully extended length of the telescopic head closest to the spring sheet among the plurality of telescopic heads is greater than the length from the turntable to the ridge of the spring sheet.

[0014] Furthermore, a plurality of contraction grooves are provided with side sliding chambers on the opposite side of the distance measuring wheel forward direction, a gravity ball is movably arranged inside the side sliding chamber, and the height of the side sliding chamber gradually increases from one end close to the contraction groove to the other end.

[0015] Furthermore, a magnetic sheet is fixedly provided on the inner wall of the side sliding chamber, the magnetic sheet and the gravity ball repel each other, a pull wire is provided between the gravity ball and the telescopic head, the telescopic head is extended and retracted by the sliding of the gravity ball in the side sliding chamber, and a plurality of anti-slip grooves are provided on one side of the telescopic head.

[0016] Furthermore, a central air strip is fixedly provided at the center of the distance measuring wheel tire, and a side pressure strip is fixedly provided on one side of the distance measuring wheel close to the marking mechanism, and the contraction force of the side pressure strip is greater than the contraction force of the central air strip.

[0017] Furthermore, a ground-lift detection component is fixedly provided on one side of the wheel frame close to the side pressure strip, and the ground-lift detection component includes a mounting box, a compression spring column is passed through the mounting box, a compression plate is fixedly provided at the top of the compression spring column in a position parallel to the side pressure strip, and an end of the control line away from the jet valve passes through the mounting box and is connected to the compression spring column.

[0018] The beneficial effects of the present invention are:

[0019] When the distance measuring wheel of the present invention slips on wet ground, the powdered lime in the powder storage chamber is controlled by the internal control unit to be sprayed by the powder spraying head on the path where the distance measuring wheel slips. The automatic spraying of lime can immediately mark the problem point, so that the staff can directly return to the point to re-measure, which greatly improves the work efficiency;

[0020] For example, when carrying out measurement work in wetlands or muddy areas, the sprayed lime mark is not only a physical indicator point, but also a traceable data point in the measurement process. In the subsequent data analysis or review process, these marks can serve as an important reference to help staff understand the measurement process and results more accurately. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 It is a schematic diagram of the cross-sectional structure of the distance measuring wheel of the present invention;

[0023] Figure 3 It is a schematic diagram of the connection structure between the marking box and the installation box of the present invention;

[0024] Figure 4 It is a schematic diagram of the internal structure of the marking box of the present invention;

[0025] Figure 5 It is a schematic diagram of the internal structure of the central control round box of the present invention;

[0026] Figure 6 The present invention Figure 5 The enlarged schematic diagram at A in the middle;

[0027] Figure 7 It is a schematic diagram of the structure of the turntable of the present invention;

[0028] Figure 8 The present invention Figure 7 The enlarged schematic diagram of point B in the middle;

[0029] Fig. 9 It is a schematic diagram of the internal structure of the powder spraying head of the present invention.

[0030] In the figure: 11, measuring instrument push rod; 12, electronic display screen; 13, wheel frame; 14, distance measuring wheel; 15, middle air strip; 16, side pressure strip; 2, marking mechanism; 21, marking box; 22, inflatable valve core; 23, closing door; 24, powder storage chamber; 25, air pressure chamber; 26, expansion air bag; 27, air storage chamber; 28, pressure relief chamber; 29, jet valve; 201, ventilation pipe; 202, Powder spray head; 203, jet head; 3, lift-off detection part; 31, installation box; 32, control line one; 33, pressure plate; 34, pressure spring column; 4, internal control panel; 41, central control round box; 42, retraction slot; 43, telescopic head; 44, turntable; 45, spring piece; 46, control line two; 47, side sliding chamber; 48, blocking plate; 401, pull wire; 402, magnetic sheet; 403, gravity ball. DETAILED DESCRIPTION

[0031] The subject matter described herein will now be discussed with reference to example embodiments. It should be understood that the discussion of these embodiments is only to enable those skilled in the art to better understand and implement the subject matter described herein, and the functions and arrangements of the elements discussed may be changed without departing from the scope of protection of the contents of this specification. Each example may omit, replace or add various processes or components as needed. In addition, the features described relative to some examples may also be combined in other examples.

[0032] like Figure 1 - Fig. 9 As shown, a land surveying device for land management comprises: a surveying instrument push rod 11, a wheel frame 13 is arranged at the bottom of the surveying instrument push rod 11, a distance measuring wheel 14 is arranged in the wheel frame 13, an electronic display screen 12 is arranged on the surveying instrument push rod 11, and a marking mechanism 2 is arranged on one side of the wheel frame 13, which is used to mark the smooth distance when the distance measuring wheel 14 slips, so that the staff can quickly identify and return to the place where the distance measuring wheel 14 starts to slip, so as to re-measure accurately and avoid the measurement error caused by slipping;

[0033] Push the distance measuring wheel 14 to the starting point to be measured, press the "clear" button on the electronic display screen 12 to reset the value on the electronic display screen 12 to zero, ensure that the measurement starts from zero, and gently push the distance measuring wheel 14 along the route to be measured.

[0034] The marking mechanism 2 includes a marking box 21, the interior of the marking box 21 is divided into two parts: a powder storage chamber 24 and an air pressure chamber 25, and a powder spray head 202 is provided at the discharge port of the powder storage chamber 24;

[0035] An inner control 4 is provided at the center of the marking box 21. The inner control 4 includes a turntable 44 fixedly connected to the rotating shaft of the distance measuring wheel 14, and is used to monitor in real time whether the distance measuring wheel 14 is in a rotating or smooth state during operation;

[0036] When the measuring wheel 14 slips on wet ground, the powdered lime in the powder storage chamber 24 is controlled by the internal control unit 4 to be sprayed by the powder spraying head 202 on the slipping path of the measuring wheel 14. The automatic spraying of lime can immediately mark the problem point, so that the staff can directly return to the point to re-measure, which greatly improves the work efficiency;

[0037] The automatic lime spraying mechanism simplifies the process of problem identification and handling, allowing workers to focus more on the measurement task itself without having to worry about how to accurately record and handle slipping situations. This convenience is especially important for work scenarios that require frequent measurements in complex terrains, such as wetlands and muddy areas. The sprayed lime mark is not only a physical indicator point, but also a traceable data point in the measurement process. In the subsequent data analysis or review process, these marks can serve as an important reference to help workers understand the measurement process and results more accurately.

[0038] A closed door 23 is rotatably provided at the top of the powder storage chamber 24, an expansion airbag 26 is provided in the air pressure chamber 25, the internal space of the expansion airbag 26 is an air storage chamber 27, and the external space of the expansion airbag 26 is a pressure relief chamber 28. An inflatable valve core 22 is fixedly provided on one side of the closed door 23 at the top of the powder storage chamber 24, and the inflatable valve core 22 is communicated with the air storage chamber 27 through a pipeline.

[0039] Before using the device, first open the closed door 23, fill the pre-prepared lime powder into the powder storage chamber 24, and then use an air pump to fill the air storage chamber 27 through the inflation valve core 22 to expand the expansion airbag 26 in the pressure relief chamber 28.

[0040] The air outlet end of the air storage chamber 27 is fixedly connected with an air jet valve 29, and two vent pipes 201 are provided at the air outlet end of the air jet valve 29. The ends of the two vent pipes 201 away from the air jet valve 29 are both provided with air jet heads 203 fixed to the inner wall of the powder spray head 202. The air jet heads 203 are connected to the air storage chamber 27 through the vent pipes 201 and the air jet valve 29, and the air jet directions of the two air jet heads 203 are the same as the powder outlet direction of the powder spray head 202.

[0041] When the inner control unit 4 detects that the distance measuring wheel 14 is slipping, the inner control unit 4 controls the jet valve 29 to open, so that the air in the inflated airbag 26 flows into the jet head 203 through the two ventilation pipes 201, and is finally ejected downward by the jet head 203. Since the flow rate of the gas is very large near the jet head 203, according to the Bernoulli principle, the pressure in this area will decrease accordingly. When the high-speed gas ejected from the jet head 203 forms a low-pressure area in the bottle, the atmospheric pressure in other areas of the bottle will become relatively larger. Therefore, under the action of the pressure difference, the lime powder will be pushed to the low-pressure area, that is, the powder spraying head 202. When the lime powder is pushed into the powder spraying head 202, it will be entrained by the high-speed flowing gas and ejected from the powder spraying head 202 along with the flow of the gas and sprayed on the ground.

[0042] A blocking plate 48 is slidingly provided inside the jet valve 29, and a spring for always applying a downward thrust to the blocking plate 48 is fixedly provided on the top. At the same time, a control line 46 running through the jet valve 29 is also provided on the blocking plate 48, and a control line 32 running through the jet valve 29 is provided at the bottom of the blocking plate 48.

[0043] The internal control unit 4 also includes a central control round box 41 fixedly connected to the marking box 21, and an arc-shaped spring piece 45 is fixedly provided on the inner bottom wall of the central control round box 41 at a position perpendicular to the ground, and one end of the spring piece 45 in the forward direction of the distance measuring wheel 14 is fixedly connected to the inner wall of the central control round box 41, and the other end is not connected to the inner wall of the central control round box 41, and the end of the spring piece 45 not connected to the inner wall of the central control round box 41 is connected to the control line 2 46.

[0044] The outer wall of the turntable 44 is provided with a plurality of contraction grooves 42, and a telescopic head 43 is slidably arranged inside the contraction groove 42. The telescopic head 43 and the turntable 44 form a telescopic structure, and the fully extended length of the one of the plurality of telescopic heads 43 closest to the spring sheet 45 is greater than the length from the turntable 44 to the ridge of the spring sheet 45.

[0045] A plurality of contraction grooves 42 are provided with side sliding chambers 47 on the opposite side of the distance measuring wheel 14. A gravity ball 403 is movably arranged inside the side sliding chamber 47. The height of the side sliding chamber 47 gradually increases from one end close to the contraction groove 42 to the other end.

[0046] A magnetic sheet 402 is fixedly arranged on the inner wall of the side sliding chamber 47. The magnetic sheet 402 and the gravity ball 403 repel each other. A pull line 401 is arranged between the gravity ball 403 and the telescopic head 43. The telescopic head 43 is extended and retracted by sliding the gravity ball 403 in the side sliding chamber 47. A plurality of anti-slip grooves are provided on one side of the telescopic head 43.

[0047] When the distance measuring wheel 14 rotates normally, it drives the turntable 44 to rotate in the central control round box 41. Under the repulsive force of the magnetic sheet 402 on the gravity ball 403, the gravity ball 403 closest to the spring sheet 45 has already rotated away from the spring sheet 45 along with the distance measuring wheel 14 before rolling to the bottom. Therefore, when the distance measuring wheel 14 rotates normally, the telescopic head 43 cannot be fully extended to squeeze the spring sheet 45.

[0048] When the distance measuring wheel 14 slips, the gravity ball 403 will instantly slide to the bottom under the inertia of the gravity ball 403, thereby relaxing the pull wire 401, so that the telescopic head 43 fully extends the contraction groove 42, and the telescopic head 43 will squeeze the spring piece 45 for a long time, and the anti-skid groove of the telescopic head 43 contacts the edge of the contraction groove 42, which plays a role in stabilizing the state of the telescopic head 43;

[0049] When the spring sheet 45 is squeezed, the spring sheet 45 will be stretched, thereby pulling the second control line 46, and the blocking plate 48 is pulled upward by the second control line 46 to make the jet valve 29 conductive.

[0050] A central air strip 15 is fixedly provided at the center of the tire of the distance measuring wheel 14 , and a side pressure strip 16 is fixedly provided on one side of the distance measuring wheel 14 close to the marking mechanism 2 . The contraction force of the side pressure strip 16 is greater than the contraction force of the central air strip 15 .

[0051] A ground-lift detection member 3 is fixedly provided on one side of the wheel frame 13 close to the side pressure strip 16. The ground-lift detection member 3 includes a mounting box 31. A compression spring column 34 is passed through the mounting box 31. A compression sheet 33 is fixedly provided at the top of the compression spring column 34 at a position parallel to the side pressure strip 16. An end of the control line 32 away from the jet valve 29 passes through the mounting box 31 and is connected to the compression spring column 34.

[0052] If the distance measuring wheel 14 leaves the ground, the distance measuring wheel 14 also remains in a non-rotating state as if it is slipping. Therefore, when the distance measuring wheel 14 leaves the ground, the middle air strip 15 is not squeezed, and the air in the side pressure strip 16 will flow back into the middle air strip 15, so that the compression piece 33 is not squeezed by the expansion of the side pressure strip 16, and the control line 1 32 will be tightened through the compression spring column 34. At this time, even if the control line 2 46 is pulled, the blocking plate 48 will not slide open, so that the lime powder will not be sprayed out.

[0053] The above describes an embodiment of the present embodiment, but the present embodiment is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present embodiment, ordinary technicians in this field can also make many forms, all of which are protected by the present embodiment.

Claims

1. A land surveying device for land management, comprising: A measuring instrument push rod (11), wherein a wheel frame (13) is provided at the bottom of the measuring instrument push rod (11), a distance measuring wheel (14) is provided in the wheel frame (13), and an electronic display screen (12) is provided on the measuring instrument push rod (11), characterized in that a marking mechanism (2) is provided on one side of the wheel frame (13) for marking the smooth distance when the distance measuring wheel (14) slips, so that a worker can quickly identify and return to the location where the distance measuring wheel (14) starts to slip, thereby re-performing accurate measurement and avoiding measurement errors caused by slipping; The marking mechanism (2) comprises a marking box (21), the interior of the marking box (21) being divided into two parts: a powder storage chamber (24) and an air pressure chamber (25), and a powder spraying head (202) is provided at the discharge port of the powder storage chamber (24); An inner control (4) is provided at the center of the marking box (21), and the inner control (4) comprises a rotating disk (44) fixedly connected to the rotating shaft of the distance measuring wheel (14), and is used for real-time monitoring whether the distance measuring wheel (14) is in a rotating or smooth state during operation; The top of the powder storage chamber (24) is rotatably provided with a closed door (23), the middle of the air pressure chamber (25) is provided with an expansion air bag (26), the internal space of the expansion air bag (26) is an air storage chamber (27), the external space of the expansion air bag (26) is a pressure relief chamber (28), an inflation valve core (22) is fixedly provided on one side of the closed door (23) at the top of the powder storage chamber (24), and the inflation valve core (22) is communicated with the air storage chamber (27) through a pipeline; The air outlet end of the air storage chamber (27) is fixedly connected to an air jet valve (29), and the air outlet end of the air jet valve (29) is provided with two ventilation pipes (201), and the ends of the two ventilation pipes (201) away from the air jet valve (29) are both provided with air jet heads (203) fixed to the inner wall of the powder spray head (202), and the air jet heads (203) are communicated with the air storage chamber (27) through the ventilation pipes (201) and the air jet valve (29), and the air jetting direction of the two air jet heads (203) is the same as the powder outlet direction of the powder spray head (202); A blocking plate (48) is slidably disposed inside the jet valve (29), a spring for always applying a downward thrust to the blocking plate (48) is fixedly disposed on the top of the blocking plate (48), and a second control line (46) penetrating the jet valve (29) is disposed on the blocking plate (48), and a first control line (32) penetrating the jet valve (29) is disposed at the bottom of the blocking plate (48); The inner control unit (4) further comprises a central control round box (41) fixedly connected to the marking box (21); an arc-shaped spring piece (45) is fixedly provided on the inner bottom wall of the central control round box (41) at a position perpendicular to the ground; one end of the spring piece (45) in the forward direction of the distance measuring wheel (14) is fixedly connected to the inner wall of the central control round box (41), and the other end is not connected to the inner wall of the central control round box (41); the end of the spring piece (45) not connected to the inner wall of the central control round box (41) is connected to a second control line (46); The outer wall of the rotating disk (44) is provided with a plurality of contraction grooves (42), and a telescopic head (43) is slidably provided inside the contraction groove (42). The telescopic head (43) and the rotating disk (44) form a telescopic structure, and the fully extended length of the one of the plurality of telescopic heads (43) closest to the elastic sheet (45) is greater than the length from the rotating disk (44) to the ridge of the elastic sheet (45); A plurality of the contraction grooves (42) are provided with a side sliding chamber (47) on the side opposite to the forward direction of the distance measuring wheel (14), a gravity ball (403) is movably arranged inside the side sliding chamber (47), and the height of the side sliding chamber (47) gradually increases from one end close to the contraction groove (42) to the other end; A magnetic sheet (402) is fixedly arranged on the inner wall of the side sliding chamber (47), the magnetic sheet (402) and the gravity ball (403) repel each other, a pull line (401) is arranged between the gravity ball (403) and the telescopic head (43), and the telescopic head (43) is extended and retracted by sliding the gravity ball (403) in the side sliding chamber (47), and a plurality of anti-slip grooves are provided on one side of the telescopic head (43).

2. A land surveying device for land management according to claim 1, characterized in that: A central air strip (15) is fixedly provided at the center of the tire of the distance measuring wheel (14), and a side pressure strip (16) is fixedly provided on a side of the distance measuring wheel (14) close to the marking mechanism (2), wherein the contraction force of the side pressure strip (16) is greater than the contraction force of the central air strip (15).

3. A land surveying device for land management according to claim 2, characterized in that: A ground-lift detection member (3) is fixedly provided on one side of the wheel frame (13) close to the side pressure strip (16), and the ground-lift detection member (3) comprises a mounting box (31), a compression spring column (34) is passed through the mounting box (31), a compression sheet (33) is fixedly provided at the top of the compression spring column (34) in a position parallel to the side pressure strip (16), and an end of the control line (32) away from the jet valve (29) passes through the mounting box (31) and is connected to the compression spring column (34).

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