Measuring device for municipal gardens

Abstract

The invention discloses a measuring device for municipal gardens, and relates to the technical field of measurement, the measuring device comprises a measuring box and a handle, the end part of the handle is connected with the measuring box, the connecting angle is adjustable, two measuring tapes are installed in the measuring box, flexible rulers are wound in the measuring tapes, and the measuring tape is connected with the handle. The output directions of the flexible rulers of the two measuring tapes are opposite, the ends of the two measuring tapes penetrate through the opposite sides of the measuring box and are located outside the measuring box, a driving mechanism is installed in the measuring box, and the driving mechanism comprises a first driving piece and a second driving piece. The measuring tape is electrically driven to be retracted and released, measurement can be completed by holding the handle and standing by a single person, and use is convenient and fast; the measuring tape is provided with two bidirectional outputs, so that the retracting and releasing speed is increased, the measuring efficiency is improved, the maximum measuring length is increased, and the measuring limitation is reduced; and the two measuring tapes can be synchronously retracted and released or one measuring tape can be independently controlled to be retracted and released, so that the measuring tape is suitable for measurement in different transverse and longitudinal scenes.

Description

Technical Field

[0001] The invention relates to the field of measurement technology, in particular to a measurement device for municipal gardens. Background Art

[0002] In the construction of municipal gardens, it is necessary to design the garden layout. Garden design is the process of creating a beautiful natural environment and living and recreational space within a certain geographical area by using garden art and engineering technology to transform the terrain, plant trees, flowers, create buildings, and arrange garden paths.

[0003] When the garden is actually laid out, a measuring device is needed to measure the renovation area, tree spacing, etc. The existing measurements are mostly carried out on-site using measuring tools such as tape measures and soft rulers. When measuring, especially for ground measurements and pit measurements, workers need to squat on the ground or bend over to operate, and they also need to manually retract and release the measuring ruler. In addition, for scenes with long measurement distances such as long roads, two people need to cooperate to complete the measurement, which is inconvenient to operate and wastes labor.

[0004] Therefore, it is necessary to invent a municipal garden measuring device to solve the above problems. Summary of the invention

[0005] The object of the present invention is to provide a measuring device for municipal gardening to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a measuring device for municipal gardening, comprising a measuring box and a handle, wherein the end of the handle is connected to the measuring box and the connection angle is adjustable, two measuring tapes are installed inside the measuring box, a soft ruler is wound inside the measuring tape, the output directions of the soft rulers of the two measuring tapes are opposite and the ends both pass through a pair of sides of the measuring box and are located outside the measuring box, a driving mechanism is installed inside the measuring box, the driving mechanism comprises a first driving member and a second driving member, and the first driving member and the second driving member are respectively used to drive the soft rulers of the two measuring tapes to move.

[0007] Optionally, the handle includes a lower rod and an upper rod, the lower rod is hinged to the measuring box and the hinge is fixable, the upper rod is threadedly connected to the lower rod, and a control button is installed on the top of the upper rod.

[0008] Optionally, the first driving member includes a first upper rotating roller, a first lower rotating roller, a first mounting bracket, a driving gear, a driven gear, and a motor. The first upper rotating roller and the first lower rotating roller are arranged vertically and are both rotatably mounted inside the first mounting bracket. The rotation axes of the first upper rotating roller and the first lower rotating roller are parallel. The driving gear and the driven gear are coaxially connected to the first upper rotating roller and the first lower rotating roller respectively, and the driving gear and the driven gear are meshed. The motor is fixedly mounted on the first mounting bracket, and the output end is coaxially connected to the first upper rotating roller or the first lower rotating roller.

[0009] Optionally, the second driving member includes a second mounting bracket, a second upper rotating roller, and a second lower rotating roller. The second upper rotating roller and the second lower rotating roller are arranged vertically and are arranged inside the second mounting bracket. The axes of the second upper rotating roller and the second lower rotating roller are parallel.

[0010] Optionally, a transmission belt is further included. One end of the first upper rotating roller is coaxially mounted with a first pulley, one end of the first lower rotating roller is coaxially mounted with a second pulley, one end of the second upper rotating roller is coaxially mounted with a third pulley, and one end of the second lower rotating roller is coaxially mounted with a fourth pulley. The first pulley and the fourth pulley are connected by the transmission belt, and the second pulley and the third pulley are connected by the transmission belt.

[0011] Optionally, both sides of the second mounting bracket are provided with chutes in the vertical direction. Both ends of the second upper rotating roller and the second lower rotating roller are provided with bearing seats, and the bearing seats are slidably mounted in the chutes.

[0012] Optionally, an adjusting mechanism is further included. The adjusting mechanism is arranged on one side of the second mounting bracket. The adjusting mechanism includes a spur gear, a first rack, a second rack, an adjusting box, and a limiting bracket. The spur gear is rotatably mounted in the middle of one side of the second mounting bracket. The first rack and the second rack are arranged on the opposite side of the spur gear and are both meshed with the spur gear. The length directions of the first rack and the second rack are parallel to the chute guide. The first rack and the second rack are respectively fixed to the bearing seat of the second lower rotating roller and the bearing seat of the second upper rotating roller. The limiting bracket is in a U-shaped structure, and both ends of the limiting bracket are attached to and clamped the upper and lower ends of the bearing seat of the second lower rotating roller. The adjusting box is independently arranged and adapted to the limiting bracket.

[0013] Optionally, the side of the limit bracket away from the two end portions is arranged inside the adjusting box and a limit block is provided on the bottom side of the end portion, and the upper and lower parts of the inner wall of the adjusting box close to the limit block are provided with limit grooves for limited insertion with the limit block, and the side of the limit bracket away from the limit block is connected with a spring, and the other end of the spring is slidably connected to the inner wall of the adjusting box in the vertical direction, and the top of the adjusting box is provided with a horizontal groove along the width direction of the limit bracket, and the side of the adjusting box close to the second mounting frame is provided with a vertical groove, and the upper part of the side of the limit bracket away from the two end portions is fixedly connected with an extension rod, and the extension rod passes through the side wall of the measuring box to its outside.

[0014] Optionally, the cross-section of the tape measure is an arc-shaped structure, and the tape measure is a double-layer structure, wherein a plurality of elastic strips are inserted inside the double-layer structure along its length direction.

[0015] Optionally, a support wheel is installed on the lower side of the end of the tape measure.

[0016] Technical effects and advantages of the present invention: The present invention adopts an electric drive to retract and extend the measuring tape. A single person can stand and complete the measurement by holding the handle. It is convenient and quick to use. The measuring tape is provided with two bidirectional outputs, which not only improves the retraction and extension rate and improves the measurement efficiency, but also increases the maximum measurement length and reduces the measurement limitation. The two measuring tapes can be retracted and extended synchronously, and one measuring tape can be retracted and extended separately. It is suitable for measuring different scenes in the horizontal and vertical directions. The handle angle is adjustable, which is suitable for measuring and adjusting in different scenes in the horizontal and vertical directions, and improves the comfort of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the vertical structure of the present invention.

[0018] Figure 2 It is a schematic diagram of another vertical structure of the present invention.

[0019] Figure 3 It is a schematic diagram of the front and cross-sectional structure of the measuring box of the present invention.

[0020] Figure 4 It is a schematic diagram of the main structure of the driving mechanism of the present invention.

[0021] Figure 5 It is a partial front view structural schematic diagram of the driving mechanism of the present invention.

[0022] Figure 6 It is a schematic diagram of the vertical structure of the first driving member of the present invention.

[0023] Figure 7 It is a schematic diagram of the vertical structure of the second driving member of the present invention.

[0024] Figure 8 It is a schematic diagram of the installation structure of the adjustment mechanism of the present invention.

[0025] Fig. 9 This is a schematic diagram of the front structural view of the second driving member of the present invention.

[0026] Fig.10 It is a schematic diagram of the cross-sectional structure of the regulating box of the present invention.

[0027] Fig.11 It is a schematic diagram of the disassembly structure of the soft ruler of the present invention.

[0028] Fig.12 It is a schematic diagram of the elastic strip structure of the present invention.

[0029] In the figure: measuring box 1; handle 2; opening 3; measuring tape 4; driving mechanism 5; first driving member 6; second driving member 7; lower rod 8; upper rod 9; tightening knob 10; control button 11; tape measure 12; supporting wheel 13; first upper rotating rod 14; first lower rotating rod 15; first mounting frame 16; driving gear 17; driven gear 18; motor 19; first pulley 20; second pulley 21; second mounting frame 22; second upper rotating rod 23; second lower rotating rod 24; third pulley 25; fourth pulley 26; transmission belt 27; adjusting mechanism 28; slide groove 29; bearing seat 30; spur gear 31; first rack 32; second rack 33; adjusting box 34; limiting bracket 35; extension rod 36; limiting groove 37; limiting block 38; spring 39; transverse groove 40; vertical groove 41; elastic strip 42; control terminal 43. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0032] In the present invention, unless otherwise clearly specified and limited, the terms "set", "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection; it can be a mechanical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0034] The present invention provides Figure 1 A measuring device for municipal gardening shown in the figure comprises a measuring box 1 and a handle 2, one end of the handle 2 is hinged to the measuring box 1, and the hinge is hinged by a bolt and a pin, a tightening knob 10 is screwed on the bolt and the hinge can be fixed by screwing the tightening knob 10, and openings 3 are provided on a pair of sides of the measuring box 1, and the handle 2 is hinged and can be rotated to adjust the direction toward the two directions provided with the openings 3.

[0035] like Figure 2 As shown: the handle 2 includes a lower rod 8 and an upper rod 9, both of which are hollow cylindrical structures. The lower rod 8 is hinged to the measuring box 1, and a threaded joint is provided at the end of the lower rod 8 away from the measuring box 1. The bottom end of the upper rod 9 is threadedly connected to the threaded joint of the lower rod 8, and a control button 11 is installed on the top of the upper rod 9. The threaded connection between the lower rod 8 and the upper rod 9 realizes that the length of the handle 2 can be adjusted, which is suitable for people of different heights and improves the comfort of use.

[0036] like Figure 3 As shown: two measuring tapes 4 are fixedly installed inside the measuring box 1, and the measuring tapes 4 adopt the existing conventional measuring tapes. A flexible tape 12 is wound inside the measuring tape 4. The two measuring tapes 4 are used for the output and input ends of the flexible tape 12 to be opposite and respectively correspond to the two openings 3. The flexible tape 12 extends out of the measuring box 1 from the opening 3, and a limiting piece is provided at the end of the flexible tape 12 to limit the end of the flexible tape 12 outside the measuring box 1. A supporting wheel 13 is installed at the bottom of the end of the flexible tape 12 for supporting the end of the flexible tape 12, and the smoothness of the flexible tape 12 is improved under the rotation of the supporting wheel 13. A driving mechanism 5 is installed inside the measuring box 1 for driving the flexible tapes 12 of the two measuring tapes 4 to input or output synchronously, or driving the flexible tape 12 of one measuring tape 4 to input or output. A control terminal 43 is also installed inside the measuring box 1, and the driving mechanism 5 and the control button 11 are both electrically connected to the control terminal 43. Pressing the control button 11 realizes the opening and closing of the driving mechanism 5 through the control terminal 43.

[0037] like Figure 4 and 5 As shown, the driving mechanism 5 includes a first driving member 6 and a second driving member 7. The first driving member 6 and the second driving member 7 correspond to the two measuring tapes 4 respectively, and are used to drive the soft ruler 12 of the measuring tape 4 to extend or retract.

[0038] like Figure 6 As shown: the first driving member 6 includes a first upper rotating rod 14, a first lower rotating rod 15, a first mounting frame 16, a driving gear 17, a driven gear 18 and a motor 19. The first upper rotating rod 14 and the first lower rotating rod 15 are arranged up and down and are both rotatably mounted on the inner side of the first mounting frame 16. The rotation axes of the first upper rotating rod 14 and the first lower rotating rod 15 are parallel. The driving gear 17 and the driven gear 18 are coaxially connected to the first upper rotating rod 14 and the first lower rotating rod 15 respectively, and the driving gear 17 and the driven gear 18 are meshed and connected. The motor 19 is fixedly mounted on the first mounting frame. The motor 19 drives the first upper rotating rod 14 or the first lower rotating rod 15 to rotate, and the first upper rotating rod 14 and the first lower rotating rod 15 rotate in the opposite direction under the meshing connection of the driving gear 17 and the driven gear 18. The flexible ruler 12 is inserted between the first upper rotating rod 14 and the first lower rotating rod 15 and clamped by the first upper rotating rod 14 and the first lower rotating rod 15. The first upper rotating rod 14 and the first lower rotating rod 15 rotate in the opposite direction to move the flexible ruler 12 to extend or retract; A first pulley 20 is coaxially mounted on one end of the first upper rotating roller 14 , and a second pulley 21 is coaxially mounted on one end of the first lower rotating roller 15 . Both the first pulley 20 and the second pulley 21 are used for transmission adaptation with the second driving member 7 .

[0039] like Figure 7 and 9 As shown: the second driving member 7 includes a second mounting frame 22, a second upper rotating rod 23 and a second lower rotating rod 24, the second upper rotating rod 23 and the second lower rotating rod 24 are arranged up and down and are arranged on the inner side of the second mounting frame 22, both sides of the second mounting frame 22 are provided with a slide groove 29 in the vertical direction, both ends of the second upper rotating rod 23 and the second lower rotating rod 24 are provided with a bearing seat 30, the bearing seat 30 is slidably installed in the slide groove 29, the second upper rotating rod 23 and the second lower rotating rod 24 are both rotatably arranged through the bearing seat 30, and the rotation axis of the second upper rotating rod 23 and the second lower rotating rod 24 are parallel, one end of the second upper rotating rod 23 is coaxially installed with a third pulley 25, and one end of the second lower rotating rod 24 is coaxially installed with a fourth pulley 26, the soft ruler 12 of the measuring tape 4 close to the second driving member 7 is inserted between the second upper rotating rod 23 and the second lower rotating rod 24 and is extended and retracted under the clamping action of the second upper rotating rod 23 and the second lower rotating rod 24; Among them, the diameters of the first pulley 20, the second pulley 21, the third pulley 25, and the fourth pulley 26 are the same; Combined with Figure 4 and 5 As shown: The first pulley 20 and the fourth pulley 26 are drivingly connected by a transmission belt 27. The second pulley 21 and the third pulley 25 are drivingly connected by a transmission belt 27. The rotation of the first pulley 20 and the second pulley 21 drives the rotation of the third pulley 25 and the fourth pulley 26 through the transmission belt 27, thereby realizing the rotation of the second upper rotating roller 23 and the second lower rotating roller 24, that is, realizing the synchronous extension or synchronous retraction of the flexible rulers 12 of the two measuring tapes 4 under the drive of a single motor 19; Combined with as Figure 8 shown: An adjustment mechanism 28 is further provided on the second driving member 7. The adjustment mechanism 28 is provided on one side of the second mounting bracket 22. The adjustment mechanism 28 includes a spur gear 31, a first rack 32, a second rack 33, an adjustment box 34, and a limit bracket 35. The spur gear 31 is rotatably mounted in the middle of one side of the second mounting bracket 22 and is fixed in position. The first rack 32 and the second rack 33 are provided on the opposite side of the spur gear 31 and are both meshed with the spur gear 31. The length directions of the first rack 32 and the second rack 33 are parallel to the guide direction of the sliding groove 29. The first rack 32 and the second rack 33 are respectively fixed to the bearing seat 30 of the second lower rotating roller 24 and the bearing seat 30 of the second upper rotating roller 23. The adjustment box 34 is independently provided. The limit bracket 35 is in a U-shaped structure. The two ends of the limit bracket 35 clamp the upper and lower ends of the bearing seat 30 of the second lower rotating roller 24. The two ends of the limit bracket 35 are in contact with the bearing seat 30 of the second lower rotating roller 24. Both the upper and lower ends of the bearing seat 30 of the second lower rotating roller 24 are horizontal planes. The width of this horizontal plane is more than twice the width of the end portion of the limit bracket 35. The other end portion of the limit bracket 35 is partially located in the adjustment box 34. The adjustment box 34 is used to limit the position of the limit bracket 35 in the vertical direction; As Fig.10As shown: a limit block 38 is provided on one side of the bottom of one end of the limit bracket 35 located in the adjustment box 34, and a limit groove 37 is provided on the upper and lower parts of the inner wall of the adjustment box 34 near the limit block 38 for limited insertion with the limit block 38, and a spring 39 is connected to the side of the limit bracket 35 away from the limit block 38, and the other end of the spring 39 is slidably connected to the inner wall of the adjustment box 34 in the vertical direction. A transverse groove 40 is provided on the top of the adjustment box 34 for the limit bracket 35 to move in the axial direction of the spring 39, and a vertical groove 41 is provided on the side of the adjustment box 34 near the second mounting bracket 22 for the limit bracket 35 to move when the vertical direction is adjusted. An extension rod 36 is fixedly connected to the upper part of one side of the limit bracket 35 away from its two end parts, and the extension rod 36 passes through the side wall of the measuring box 1 to its outside, and the side wall of the measuring box 1 is provided with an opening for the movement of the extension rod 36, which has the function of allowing the staff to hold the extension rod 36 and move it horizontally when in use. The limit bracket 35 is moved to move the limit block 38 out of one limit slot 37. After moving out, the limit bracket 35 is moved in the vertical direction and the limit block 38 is inserted into the other limit slot 37 laterally. The limit bracket 35 is clamped in the limit slot 37 under the elastic pressure of the spring 39. The limit bracket 35 moves and is fixed in the vertical direction, driving the second lower rotating rod 24 to slide on the slide slot 29. The first rack 32 moves synchronously with the second lower rotating rod 24 and drives the spur gear 31 meshing with it to rotate. The spur gear 31 rotates and drives the second rack 33 meshing with it to move in the opposite direction of the movement of the first rack 32, so that the second upper rotating rod 23 and the second lower rotating rod 24 can be adjusted in the opposite direction in the vertical direction, that is, the clamping or cancellation of the soft ruler 12 is realized. When the soft ruler 12 is clamped, the soft rulers 12 of the two measuring tapes 4 are synchronously extended or retracted. When the clamping is cancelled, the soft ruler 12 of one measuring tape 4 can be independently extended or retracted. The second mounting frame 22 is provided with an adjustment box 34, a limit bracket 35 and an extension rod 36 on the opposite side of the adjustment mechanism 28, which are used to clamp and limit the bearing seat 30 at the other end of the second lower rotating rod 24, further improving the stability of the second lower rotating rod 24.

[0040] like Fig.11 As shown: the cross-section of the tape measure 12 is an arc-shaped structure, and the design of the arc-shaped structure improves the transverse shaping ability of the tape measure 12 after being extended, and the tape measure 12 is a double-layer structure, and a plurality of elastic strips 42 are interspersed inside the double-layer structure along its length direction, which are used to further improve its transverse shaping strength and avoid softening during the extension process.

[0041] like Fig.12 As shown: the elastic strip 42 includes but is not limited to a tension spring strip.

[0042] The first upper rotating rod 14 and the second upper rotating rod 23 are both arc-shaped convex rotating rods with a large middle diameter, and the first lower rotating rod 15 and the second lower rotating rod 24 are both arc-shaped concave rotating rods with a small middle diameter, which are used to adapt to the arc structure of the tape measure 12.

[0043] This device is suitable for measuring road width, construction width, tree spacing, fish pond depth, etc. in gardens; like Figure 1 As shown: when measuring the road width, tree spacing, etc. horizontally, the measuring box 1 is arranged horizontally, the handle 2 is held, the measuring box 1 is placed on the ground, and the tape measure 12 is controlled to extend horizontally to achieve measurement; like Figure 2 As shown: when measuring the depth of a fish pond, the handle 2 is rotated so that the length of the handle 2 is parallel to the extension direction of the soft ruler 12, and the second driving member 7 is adjusted through the adjustment mechanism 28 to cancel the clamping of the soft ruler 12 of a tape measure 4, and the soft ruler 12 of a tape measure 4 is driven to extend to achieve depth measurement.

[0044] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A measuring device for municipal gardens, characterized in that: The invention comprises a measuring box (1) and a handle (2), wherein the end of the handle (2) is connected to the measuring box (1) and the connection angle is adjustable; two measuring tapes (4) are installed inside the measuring box (1), a soft ruler (12) is wound inside the measuring tapes (4), the output directions of the soft rulers (12) of the two measuring tapes (4) are opposite and the ends thereof pass through a pair of sides of the measuring box (1) and are located outside the measuring box (1); a driving mechanism (5) is installed inside the measuring box (1), the driving mechanism (5) comprises a first driving member (6) and a second driving member (7), the first driving member (6) and the second driving member (7) are respectively used to drive the soft rulers (12) of the two measuring tapes (4) to move.

2. A municipal garden measuring device according to claim 1, characterized in that: The handle (2) comprises a lower rod (8) and an upper rod (9), the lower rod (8) being hinged to the measuring box (1) and being fixable in hinge connection, the upper rod (9) being threadedly connected to the lower rod (8), and a control button (11) being mounted on the top end of the upper rod (9).

3. A municipal garden measuring device according to claim 1, characterized in that: The first driving member (6) comprises a first upper rotating rod (14), a first lower rotating rod (15), a first mounting frame (16), a driving gear (17), a driven gear (18) and a motor (19); the first upper rotating rod (14) and the first lower rotating rod (15) are arranged up and down and are both rotatably mounted on the inner side of the first mounting frame (16); the rotation axes of the first upper rotating rod (14) and the first lower rotating rod (15) are parallel; the driving gear (17) and the driven gear (18) are coaxially connected to the first upper rotating rod (14) and the first lower rotating rod (15) respectively, and the driving gear (17) and the driven gear (18) are meshingly connected; the motor (19) is fixedly mounted on the first mounting frame (16), and the output end is coaxially connected to the first upper rotating rod (14) or the first lower rotating rod (15).

4. A municipal garden measuring device according to claim 3, characterized in that: The second driving member (7) comprises a second mounting frame (22), a second upper rotating rod (23) and a second lower rotating rod (24); the second upper rotating rod (23) and the second lower rotating rod (24) are arranged one above the other and are arranged on the inner side of the second mounting frame (22); and the axes of the second upper rotating rod (23) and the second lower rotating rod (24) are parallel.

5. A municipal garden measuring device according to claim 4, characterized in that: The invention also comprises a transmission belt (27), a first pulley (20) is coaxially mounted on one end of the first upper rotating rod (14), a second pulley (21) is coaxially mounted on one end of the first lower rotating rod (15), a third pulley (25) is coaxially mounted on one end of the second upper rotating rod (23), and a fourth pulley (26) is coaxially mounted on one end of the second lower rotating rod (24), the first pulley (20) and the fourth pulley (26) are connected to each other by a transmission belt (27), and the second pulley (21) and the third pulley (25) are connected to each other by a transmission belt (27).

6. A municipal garden measuring device according to claim 4, characterized in that: Both sides of the second mounting frame (22) are provided with slide grooves (29) in the vertical direction, and both ends of the second upper rotating rod (23) and the second lower rotating rod (24) are provided with bearing seats (30), and the bearing seats (30) are slidably mounted in the slide grooves (29).

7. A municipal garden measuring device according to claim 6, characterized in that: It further includes an adjusting mechanism (28). The adjusting mechanism (28) is arranged on one side of the second mounting bracket (22). The adjusting mechanism (28) includes a spur gear (31), a first rack (32), a second rack (33), an adjusting box (34) and a limiting bracket (35). The spur gear (31) is rotatably mounted in the middle of one side of the second mounting bracket (22). The first rack (32) and the second rack (33) are arranged on the opposite side of the spur gear (31) and are both meshed with the spur gear (31). The length directions of the first rack (32) and the second rack (33) are parallel to the guiding direction of the sliding groove (29). The first rack (32) and the second rack (33) are respectively fixed to the bearing seat (30) of the second lower roller (24) and the bearing seat (30) of the second upper roller (23). The limiting bracket (35) is in a U-shaped structure. The two end parts of the limiting bracket (35) fit and clamp the upper and lower ends of the bearing seat (30) of the second lower roller (24). The adjusting box (34) is independently arranged and adapted to the limiting bracket (35).

8. A municipal garden measuring device according to claim 7, characterized in that: One side of the limiting bracket (35) far from the two end parts is arranged inside the adjusting box (34), and a limiting block (38) is arranged on one side of the bottom of this end part. On the upper and lower parts of one side of the inner wall of the adjusting box (34) close to the limiting block (38), limiting grooves (37) are respectively opened for limiting and inserting with the limiting block (38). A spring (39) is connected to the side of the limiting bracket (35) far from the limiting block (38). The other end of the spring (39) is slidably connected to the inner wall of the adjusting box (34) in the vertical direction. A transverse groove (40) is opened at the top of the adjusting box (34) along the width direction of the limiting bracket (35). A vertical groove (41) is opened on one side of the adjusting box (34) close to the second mounting bracket (22). An extension rod (36) is fixedly connected to the upper part of one side of the limiting bracket (35) far from its two end parts. The extension rod (36) penetrates through the side wall of the measuring box (1) to its outside.

9. A municipal garden measuring device according to claim 1, characterized in that: The cross section of the flexible ruler (12) is in an arc structure. The flexible ruler (12) is in a double-layer structure, and a plurality of elastic strips (42) are inserted along its length direction inside the double-layer structure.

10. A municipal garden measuring device according to claim 1, characterized in that: A support wheel (13) is installed on the lower side of the end of the flexible ruler (12).

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