Folding surveying and mapping ruler

Abstract

The invention relates to the technical field of surveying and mapping tools, and particularly discloses a folding surveying and mapping ruler which comprises an outer wrapping ruler and an inner ruler, a driving module is connected between the outer wrapping ruler and the inner ruler and comprises a contraction notch, a driving motor and a driving shaft, the contraction notch is formed in the middle of the bottom of the outer wrapping ruler, and the inner ruler is arranged in the contraction notch; the driving motor is connected to the lower portion of the middle of the front side of the outer wrapping ruler through a positioning bolt, the front end of the driving shaft is connected with the output end of the rear side of the driving motor, and the inner ruler is screwed into the contraction notch through the driving motor and the driving shaft, so that folding of the surveying and mapping ruler is completed. The inner ruler is rotated through the driving module, and when the inner ruler is rotated to a preset angle in cooperation with the contact switch, the inner ruler can be automatically stopped, so that the rotation precision of the inner ruler is ensured, and the use convenience and the automation degree of the surveying and mapping ruler are improved.

Description

Technical Field

[0001] The invention belongs to the technical field of surveying and mapping tools, and in particular relates to a foldable surveying and mapping ruler. Background Art

[0002] Surveying and mapping refers to the measurement, collection and mapping of the shape, size, spatial position and attributes of natural geographical elements or artificial facilities on the surface. In a foldable surveying ruler with application number CN202411514647.6, the first surveying ruler and the second surveying ruler are connected into a whole through the cooperation between the first connector, the second connector and the connecting mechanism, and can ensure that the first surveying ruler and the second surveying ruler are in the same straight line in the working state, providing the necessary conditions for accurate measurement of data. Through the setting of the first clamping plate and the second clamping plate, the angle between the first surveying ruler and the second surveying ruler can also be suspended and fixed at any angle, thereby increasing the application scope of the surveying ruler. However, manual operation is required for the adjustment of the surveying ruler, and its degree of automation is insufficient, which is not convenient for the use of the surveying ruler. Summary of the invention

[0003] The object of the present invention is to provide a foldable surveying ruler to solve the problems raised in the above background technology.

[0004] To achieve the above object, the present invention provides the following technical solutions: A foldable surveying ruler comprises an outer ruler and an inner ruler, wherein a driving module is connected between the outer ruler and the inner ruler, wherein the driving module comprises a contraction slot, a driving motor and a driving shaft, wherein the contraction slot is arranged in the middle of the bottom of the outer ruler, the inner ruler is arranged in the contraction slot, and the front and rear sides of the inner ruler are both slidably matched with the outer ruler, the driving motor is connected to the lower middle part of the front side of the outer ruler through a positioning bolt, the front end of the driving shaft is connected to the output end of the rear side of the driving motor, and the rear end of the driving shaft passes through the front end of the outer ruler and the inner ruler, and is connected to the bearing at the rear end of the outer ruler, the top end of the inner ruler is arranged as a semicircular structure, and the rear end of the bottom of the outer ruler is connected to an angle adjustment module, wherein the angle adjustment module comprises an angle ruler, a primary indicator and a secondary indicator, the angle ruler is sleeved on the rear side of the bottom end of the outer ruler, and the front side surface of the angle ruler is flush with the rear side surface of the inner ruler, the primary indicator is arranged on the front side of the angle ruler, and the secondary indicator is connected to the lower left side of the inner ruler.

[0005] Preferably, the angle adjustment module also includes a connecting rod, an extension plate, a device slot and a contact switch. The connecting rod is symmetrically connected to the right side of the first-level indicator member up and down, and a gap is left between the two groups of connecting rods. The extension plate is connected to the right end of the connecting rod, and the extension plate is slidably matched with the second-level indicator member. The device slot is opened in the middle of the right side of the extension plate, and the contact switch is embedded in the device slot.

[0006] Preferably, the angle adjustment module also includes a linkage block, a first-level limit slot and a first-level limit block, the linkage block is connected to the rear side of the first-level indicator, the first-level limit slot is opened on the outer wall of the angle ruler, the first-level limit block is slidably fitted in the first-level limit slot, and the first-level limit block is connected to the linkage block.

[0007] Preferably, the angle adjustment module also includes a secondary limit slot, an arc-shaped iron piece, an installation slot, a primary electromagnet and a secondary limit block. The secondary limit slot is opened on the front side of the angle ruler. The arc-shaped iron piece and the secondary limit block are both arranged in the secondary limit slot. The rear side of the arc-shaped iron piece is connected to the angle ruler. The secondary limit block slides in the secondary limit slot, and the rear side of the secondary limit block slides in the arc-shaped iron piece. The front side of the secondary limit block is connected to the primary indicator. The installation slot is opened in the middle of the rear side of the secondary limit block, and the primary electromagnet is embedded in the installation slot.

[0008] Preferably, the angle adjustment module further comprises an inner groove opening, which is arranged at the lower rear side of the inner ruler.

[0009] Preferably, the angle adjustment module also includes a positioning plate and a positioning bolt. The positioning plate is symmetrically arranged on both sides of the top of the angle ruler. The positioning bolt is arranged on the top of the positioning plate, and there are two groups of positioning bolts on the top of the positioning plate. The positioning plate is connected to the angle ruler through the positioning bolts.

[0010] Preferably, the angle adjustment module also includes an annular notch and an iron ring, the annular notch is opened at the lower rear side of the inner scale, the iron ring is embedded in the annular notch, and the iron ring is sleeved on the outer side of the drive shaft.

[0011] Preferably, the angle adjustment module also includes an assembly slot and a secondary electromagnet. The assembly slot is opened at the lower part of the outer ruler, and the assembly slot is connected to the contraction slot. The assembly slot is located at the rear side of the annular slot, and the secondary electromagnet is embedded in the assembly slot.

[0012] Compared with the prior art, the present invention has the following beneficial effects: When the present invention is in use, the inner ruler is rotated into the contraction slot by driving the motor and the driving shaft, thereby completing the folding of the surveying ruler. According to the angle to be surveyed, the first-level indicator is pointed to the required angle, and the first-level indicator is fixed by the first-level electromagnet and the arc-shaped iron piece. The inner ruler is rotated by the driving module, and the contact switch is cooperated to make the inner ruler stop automatically when it is rotated to a preset angle, thereby ensuring the accuracy of the rotation of the inner ruler, thereby improving the convenience and automation of the use of the surveying ruler. The provision of the second-level electromagnet and the iron ring can limit and fix the inner ruler, thereby improving the stability of the inner ruler, facilitating the use of the surveying ruler, and improving the automation and accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 The figure is a schematic diagram of the overall structure of a foldable surveying ruler; Figure 2 This is a schematic diagram of the inner scale of a foldable surveying ruler; Figure 3 This is a schematic diagram of the rear structure of the inner scale of a foldable surveying ruler; Figure 4 It is a schematic diagram of a secondary indicator of a foldable surveying ruler; Figure 5 It is a schematic diagram of a secondary limit slot of a foldable surveying ruler; Figure 6 This is a schematic diagram of a secondary limit block of a foldable surveying ruler.

[0014] In the figure: 1. outer ruler; 2. inner ruler; 3. drive module; 31. contraction notch; 32. drive motor; 33. drive shaft; 4. angle adjustment module; 41. angle ruler; 42. primary indicator; 43. secondary indicator; 44. connecting rod; 45. extension plate; 46. equipment notch; 47. contact switch; 48. linkage block; 49. primary limit notch; 410. primary limit block; 411. secondary limit notch; 412. arc iron piece; 413. installation notch; 414. primary electromagnet; 415. secondary limit block; 416. inner groove notch; 417. positioning plate; 418. positioning bolt; 419. annular notch; 420. iron ring; 421. assembly notch; 422. secondary electromagnet. DETAILED DESCRIPTION

[0015] See also Figure 1-Figure 6 As shown, a foldable surveying ruler comprises an outer ruler 1 and an inner ruler 2, a driving module 3 is connected between the outer ruler 1 and the inner ruler 2, the driving module 3 comprises a contraction slot 31, a driving motor 32 and a driving shaft 33, the contraction slot 31 is opened in the middle of the bottom of the outer ruler 1, the inner ruler 2 is arranged in the contraction slot 31, and the front and rear sides of the inner ruler 2 are both slidably matched with the outer ruler 1, the driving motor 32 is connected to the lower middle part of the front side of the outer ruler 1 by a positioning bolt, and the front end of the driving shaft 33 is connected to the output end of the rear side of the driving motor 32. The rear end of the drive shaft 33 passes through the front end of the outer ruler 1 and the inner ruler 2, and is connected to the bearing at the rear end of the outer ruler 1. The top end of the inner ruler 2 is set to a semicircular structure, and the rear end of the bottom of the outer ruler 1 is connected to an angle adjustment module 4. The angle adjustment module 4 includes an angle ruler 41, a first-level indicator 42 and a second-level indicator 43. The angle ruler 41 is sleeved on the rear side of the bottom end of the outer ruler 1, and the front side of the angle ruler 41 is flush with the rear side of the inner ruler 2. The first-level indicator 42 is set on the front side of the angle ruler 41, and the second-level indicator 43 is connected to the lower left side of the inner ruler 2.

[0016] refer to Figure 1 , Figure 2 and Figure 4-Figure 6As shown, the angle adjustment module 4 also includes a connecting rod 44, an extension plate 45, a device slot 46 and a contact switch 47. The connecting rod 44 is symmetrically connected to the right side of the primary indicator 42, and a gap is left between the two groups of connecting rods 44. The extension plate 45 is connected to the right end of the connecting rod 44, and the extension plate 45 and the secondary indicator 43 are slidably matched. The device slot 46 is opened in the middle of the right side of the extension plate 45. The contact switch 47 is embedded in the device slot 46. When the secondary indicator 43 contacts the contact switch 47, the contact switch 47 transmits a signal to the external terminal. The external terminal receives the signal and controls the drive motor 32 to turn off and the secondary electromagnet 422 to turn on. The gap between the two groups of connecting rods 44 makes it convenient for personnel to determine the scale line indicated by the tip of the primary indicator 42.

[0017] refer to Figure 1-Figure 5 As shown, the angle adjustment module 4 also includes a linkage block 48, a first-level limit slot 49 and a first-level limit block 410. The linkage block 48 is connected to the rear side of the first-level indicator 42. The first-level limit slot 49 is opened on the outer wall of the angle ruler 41. The first-level limit block 410 is slidably fitted in the first-level limit slot 49, and the first-level limit block 410 is connected to the linkage block 48 to limit the first-level indicator 42 and improve the stability of the first-level indicator 42.

[0018] refer to Figure 1 , Figure 2 and Figure 4-Figure 6 As shown, the angle adjustment module 4 also includes a secondary limiting slot 411, an arc-shaped iron piece 412, an installation slot 413, a primary electromagnet 414 and a secondary limiting block 415. The secondary limiting slot 411 is opened on the front side of the angle ruler 41, the arc-shaped iron piece 412 and the secondary limiting block 415 are both arranged in the secondary limiting slot 411, the rear side of the arc-shaped iron piece 412 is connected to the angle ruler 41, the secondary limiting block 415 is slidably matched in the secondary limiting slot 411, and the rear side of the secondary limiting block 415 is connected to the arc-shaped iron piece 412. The secondary limit block 415 is slidably matched, the front side of the secondary limit block 415 is connected to the primary indicator 42, the installation slot 413 is opened in the middle of the rear side of the secondary limit block 415, and the primary electromagnet 414 is embedded in the installation slot 413. After the primary indicator 42 is adjusted to point to the required angle, the primary electromagnet 414 is turned on to make the primary electromagnet 414 adsorbed on the arc iron piece 412, thereby restricting and fixing the secondary limit block 415 to ensure the stability of the primary indicator 42.

[0019] refer to Figure 1-Figure 6 As shown, the angle adjustment module 4 also includes an inner groove opening 416, which is opened at the lower rear side of the inner ruler 2 to prevent misoperation, so that when the secondary indicator 43 misses the primary indicator 42, the inner ruler 2 contacts with the primary indicator 42, the connecting rod 44 and the extension plate 45 and affects each other.

[0020] refer to Figure 1-Figure 6 As shown, the angle adjustment module 4 also includes a positioning plate 417 and a positioning bolt 418. The positioning plate 417 is symmetrically arranged on both sides of the top of the angle ruler 41, and the positioning bolt 418 is arranged on the top of the positioning plate 417. There are two groups of positioning bolts 418 on the top of the positioning plate 417. The positioning plate 417 is connected to the angle ruler 41 through the positioning bolts 418, which can block the primary limit slot 49 and the secondary limit slot 411 to prevent the primary limit block 410 and the secondary limit block 415 from respectively detaching from the primary limit slot 49 and the secondary limit slot 411.

[0021] The angle adjustment module 4 also includes an annular groove 419 and an iron ring 420. The annular groove 419 is opened at the lower rear side of the inner scale 2. The iron ring 420 is embedded in the annular groove 419, and the iron ring 420 is sleeved on the outside of the driving shaft 33. By setting the iron ring 420, an adsorption member can be provided for the magnetic attraction effect of the secondary electromagnet 422.

[0022] refer to Figure 3-Figure 6 As shown, the angle adjustment module 4 also includes an assembly slot 421 and a secondary electromagnet 422. The assembly slot 421 is opened at the lower part of the outer scale 1, and the assembly slot 421 is communicated with the contraction slot 31. The assembly slot 421 is located at the rear side of the annular slot 419. The secondary electromagnet 422 is embedded in the assembly slot 421. The secondary electromagnet 422 is turned on, and the secondary electromagnet 422 is adsorbed on the iron ring 420, thereby restricting and fixing the inner scale 2, so that when the surveying and mapping scale is used, the inner scale 2 is not easy to deviate and change the angle between the inner scale 2 and the outer scale 1, thereby ensuring the stability and accuracy of the surveying and mapping scale when in use.

[0023] Working principle: According to the angle to be surveyed, the first-level indicator 42 is adjusted to point to the required angle, and the first-level electromagnet 414 is turned on to make the first-level electromagnet 414 adsorb to the arc iron piece 412, thereby limiting and fixing the second-level limit block 415 to ensure the stability of the first-level indicator 42. When the surveying ruler is needed, it is only necessary to start the drive motor 32 to rotate the drive shaft 33, thereby driving the inner ruler 2 to rotate, and the second-level indicator 43 rotates synchronously with the inner ruler 2. When the second-level indicator 43 contacts the contact switch 47, the contact switch 47 transmits a signal To the peripheral terminal, the peripheral terminal receives the signal and controls the driving motor 32 to turn off and the secondary electromagnet 422 to turn on. The secondary electromagnet 422 is adsorbed with the iron ring 420, thereby restricting and fixing the inner scale 2, so that when the surveying ruler is used, the inner scale 2 is not easy to deviate and change the angle between the inner scale 2 and the outer scale 1, thereby ensuring the stability and accuracy of the surveying ruler when in use. Through the primary limit slot 49, the primary limit block 410, the secondary limit slot 411 and the secondary limit block 415, and in conjunction with the linkage block 48, the primary indicator 42 can be restricted, so that the primary indicator 42 is not easy to separate from the angle ruler 41.

[0024] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A foldable surveying ruler, comprising an outer ruler (1) and an inner ruler (2), characterized in that: A drive module (3) is connected between the outer ruler (1) and the inner ruler (2). The drive module (3) comprises a contraction slot (31), a drive motor (32) and a drive shaft (33). The contraction slot (31) is provided in the middle of the bottom of the outer ruler (1). The inner ruler (2) is arranged in the contraction slot (31). The front and rear sides of the inner ruler (2) are slidably matched with the outer ruler (1). The drive motor (32) is connected to the lower middle part of the front side of the outer ruler (1) by means of a positioning bolt. The front end of the drive shaft (33) is connected to the output end of the rear side of the drive motor (32). The rear end of the drive shaft (33) passes through the outer ruler (1). The front end of the ruler (1) and the inner ruler (2) are connected to the bearing of the rear end of the outer ruler (1). The top end of the inner ruler (2) is set as a semicircular structure. The bottom rear end of the outer ruler (1) is connected with an angle adjustment module (4). The angle adjustment module (4) includes an angle ruler (41), a first-level indicator (42) and a second-level indicator (43). The angle ruler (41) is sleeved on the rear side of the bottom end of the outer ruler (1), and the front side of the angle ruler (41) is flush with the rear side of the inner ruler (2). The first-level indicator (42) is set on the front side of the angle ruler (41), and the second-level indicator (43) is connected to the lower left side of the inner ruler (2).

2. A foldable surveying ruler according to claim 1, characterized in that: The angle adjustment module (4) further comprises a connecting rod (44), an extension plate (45), a device slot (46) and a contact switch (47); the connecting rod (44) is symmetrically connected to the right side of the primary indicator (42) in an upper and lower manner, and a gap is left between the two groups of connecting rods (44); the extension plate (45) is connected to the right end of the connecting rod (44), and the extension plate (45) and the secondary indicator (43) are slidably matched; the device slot (46) is opened in the middle of the right side of the extension plate (45), and the contact switch (47) is embedded in the device slot (46).

3. The foldable surveying ruler according to claim 1, characterized in that: The angle adjustment module (4) further comprises a linkage block (48), a first-level limiting notch (49) and a first-level limiting block (410); the linkage block (48) is connected to the rear side of the first-level indicating member (42); the first-level limiting notch (49) is provided on the outer wall of the angle ruler (41); the first-level limiting block (410) is slidably fitted in the first-level limiting notch (49); and the first-level limiting block (410) is connected to the linkage block (48).

4. The foldable surveying ruler according to claim 1, characterized in that: The angle adjustment module (4) further comprises a secondary limiting notch (411), an arc-shaped iron piece (412), an installation notch (413), a primary electromagnet (414) and a secondary limiting block (415); the secondary limiting notch (411) is arranged at the front side of the angle ruler (41); the arc-shaped iron piece (412) and the secondary limiting block (415) are both arranged in the secondary limiting notch (411); the rear side of the arc-shaped iron piece (412) is connected to the angle ruler (41); the secondary limiting block (415) is slidably matched in the secondary limiting notch (411); the rear side of the secondary limiting block (415) is slidably matched with the arc-shaped iron piece (412); the front side of the secondary limiting block (415) is connected to the primary indicating piece (42); the installation notch (413) is arranged at the middle part of the rear side of the secondary limiting block (415); and the primary electromagnet (414) is embedded in the installation notch (413).

5. The foldable surveying ruler according to claim 1, characterized in that: The angle adjustment module (4) further comprises an inner groove opening (416), wherein the inner groove opening (416) is opened at the lower rear side of the inner ruler (2).

6. The foldable surveying ruler according to claim 1, characterized in that: The angle adjustment module (4) further comprises a positioning plate (417) and a positioning bolt (418); the positioning plate (417) is symmetrically arranged on both sides of the top of the angle ruler (41); the positioning bolt (418) is arranged on the top of the positioning plate (417); and two groups of positioning bolts (418) are arranged on the top of the positioning plate (417); the positioning plate (417) is connected to the angle ruler (41) via the positioning bolts (418).

7. The foldable surveying ruler according to claim 1, characterized in that: The angle adjustment module (4) further comprises an annular notch (419) and an iron ring (420), wherein the annular notch (419) is provided at the lower rear side of the inner ruler (2), the iron ring (420) is embedded in the annular notch (419), and the iron ring (420) is sleeved on the outer side of the drive shaft (33).

8. The foldable surveying ruler according to claim 7, characterized in that: The angle adjustment module (4) further comprises an assembly notch (421) and a secondary electromagnet (422); the assembly notch (421) is disposed at the lower portion of the outer ruler (1), the assembly notch (421) is communicated with the contraction notch (31), the assembly notch (421) is located at the rear side of the annular notch (419), and the secondary electromagnet (422) is embedded in the assembly notch (421).

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