Electronic level gauge for surveying and mapping

Abstract

The electronic level gauge comprises a level gauge head, the bottom of the level gauge head is connected with a supporting mechanism, the supporting mechanism comprises at least three first supporting legs, second supporting legs and a base, the number of the second supporting legs corresponds to that of the first supporting legs, the base is hinged to the top ends of the three first supporting legs, and the top face of the base is connected with the bottom of the level gauge head; a second supporting leg is slidably connected into the first supporting leg, a fixing part used for controlling the second supporting leg to slide is arranged at the end, away from the base, of the first supporting leg, a cavity is formed in the fixing part, a first control block matched with the side face of the second supporting leg to slide is arranged on the inner wall of the cavity, and a second control block in mirror symmetry with the first control block is arranged in the cavity. The two sides of the second control block are slidably connected with a track structure arranged in the cavity, a pushing assembly is arranged on the outer side face of the fixing part, and the output end of the pushing assembly extends into the cavity to control the second control block to slide on the track structure. The electronic level gauge support leg is used for solving the technical problem that an existing electronic level gauge support leg is poor in landing stability.

Description

Technical Field

[0001] The utility model relates to the technical field of surveying and mapping, in particular to an electronic level for surveying and mapping. Background Art

[0002] The electronic level is an advanced measuring device used to accurately measure the height difference between two points on the ground, and then determine the elevation of the point to be measured. It is an electronic upgraded version of the traditional optical level, combining optics, mechanics, electronics and data processing technologies to achieve measurement automation, data digitization and simplified operation.

[0003] At present, electronic levels are widely used in the field of engineering surveys, such as urban planning, building construction, civil engineering, geological exploration and other field scenarios. However, when conducting geological exploration, the surface environment is relatively complex. The surface used to place the base bracket is usually uneven, and the bottom ends of the bracket legs cannot be stable at the same time. The lower legs need to add stones or other objects to raise the horizontal plane to achieve a parallel effect with the horizontal line of the other legs, resulting in poor stability of the legs, which greatly affects the survey work of the explorers. Therefore, it is urgent to set up an electronic level that can adapt to complex environment surveys to solve the above problems. Utility Model Content

[0004] The utility model aims to provide an electronic level for surveying and mapping to solve the problems described in the background technology.

[0005] The technical solution of the utility model is achieved in this way:

[0006] An electronic level for surveying and mapping, comprising a level head, the bottom of the level head is connected to a support mechanism, the support mechanism comprises at least three first legs and second legs corresponding to the number of the first legs, and a base hinged to the top ends of the three first legs, the top surface of the base is connected to the bottom of the level head;

[0007] The second leg is slidably connected inside the first leg, and a fixing portion for controlling the sliding of the second leg is provided at one end of the first leg away from the base. The fixing portion has a built-in cavity, and an inner wall of the cavity is provided with a first control block adapted to slide on the side of the second leg. A second control block mirror-symmetrical to the first control block is provided in the cavity, and both sides of the second control block are slidably connected to the track structure built into the cavity. A pushing component is provided on the outer side surface of the fixing portion, and an output end of the pushing component extends into the cavity to control the second control block to slide on the track structure.

[0008] A further technical solution is that the pushing assembly includes a threaded rod and a rotating head, one end of the threaded rod is fixedly connected to the rotating head, and the other end passes through the top surface of the fixed part, extends into the cavity and is rotatably connected to the top surface of the second control block.

[0009] A further technical solution is that a plurality of regularly spaced convex marks are arranged around the top surface of the rotating head.

[0010] A further technical solution is that the pushing assembly includes a concave block arranged on the top surface of the fixing portion, a swing element is arranged between the left and right protrusions of the concave block, and the two side surfaces of the swing element are dampingly connected to the inner side surfaces of the protrusions of the concave block through friction pads;

[0011] A push rod is provided below the swing element, the top end of the push rod is connected to the bottom surface of the swing element through a flexible member, and the bottom end of the push rod passes through the top surface of the fixing portion, extends into the cavity and is connected to the top surface of the second control block.

[0012] A further technical solution is that the flexible member is a connecting rope or an iron chain.

[0013] A further technical solution is that the track structure includes sliding grooves arranged on both sides of the cavity, and both sides of the second control block can slide up and down in the sliding grooves.

[0014] A further technical solution is that the track structure includes slide bars arranged on both sides of the cavity, and the second control block is sleeved outside the slide bars and slides up and down.

[0015] A further technical solution is that the bottom end of the second leg is detachably connected with a tail end element.

[0016] A further technical solution is that the tail end element is a plurality of gravity blocks with different weights.

[0017] The beneficial effects of the utility model are:

[0018] Carry the support structure to the predetermined location, and according to the normal installation work, the top of the first leg is swung open with the side of the base as the rotation base point to form a triangular shape to ensure the stability of the support mechanism. Then open the push assembly, and its output end lifts the second control block upward, and the second leg slides upward in the track structure built into the cavity, thereby releasing the pressure of the bottom of the second control block on the second leg, so that the second leg slides freely, and its bottom end conveniently falls toward the ground until it stops after contacting the ground. If the installation location is uneven, there is a drop in the horizontal plane between the three second legs or one of them and the other two second legs, then the second leg continues to slide toward the ground until it stops sliding after contacting the ground with the deepest drop. With one of the second legs or two of the ground in contact as the basic horizontal plane, the second leg with a drop needs to slide up or down, and the state presented by the three second legs is kept horizontal and parallel to the ground, so that the bottom surface of the base is kept horizontal and parallel to the bottom surface, which is convenient for the base to install the level head, which can provide convenience for subsequent measurement work and improve the accuracy of measurement. Finally, the second control block is slid downward on the track structure by pushing the component drive output end, exerting pressure on the second leg to prevent the second leg from accidentally sliding into the first leg during operation, thereby affecting the normal work of the survey. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A first overall structural schematic diagram provided for Example 1;

[0020] Figure 2 This is a cross-sectional schematic diagram of the fixing portion of Example 1;

[0021] Figure 3 A second overall structural schematic diagram provided in Example 1;

[0022] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0023] Figure 5 is a cross-sectional schematic diagram of the fixing portion of Example 2;

[0024] Figure 6 It is a cross-sectional schematic diagram of the fixing part connected to the threaded rod in Example 3;

[0025] Figure 7 This is a cross-sectional schematic diagram of the connection between the fixing part and the push rod of Example 3.

[0026] In the figure, 1, first leg; 2, second leg; 3, base; 4, fixing part; 5, cavity; 6, first control block; 7, second control block; 8, threaded rod; 9, rotating head; 10, convex mark; 11, concave block; 12, swing element; 13, friction pad; 14, push rod; 15, flexible part; 16, sliding groove; 17, sliding rod; 18, gravity block. DETAILED DESCRIPTION

[0027] In order to better understand the technical content of the present invention, specific embodiments are provided below, and the present invention is further described in conjunction with the accompanying drawings.

[0028] Example 1

[0029] See also Figures 1 to 7 The utility model provides an electronic level for surveying and mapping, including a level head (not shown), a supporting mechanism connected to the bottom of the level head, the supporting mechanism including at least three first legs 1 and second legs 2 corresponding to the number of the first legs 1, and a base 3 hinged to the top ends of the three first legs 1, the top surface of the base 3 is connected to the bottom of the level head; the second leg 2 can be slidably connected inside the first leg 1, a fixing part 4 for controlling the sliding of the second leg 2 is provided at one end of the first leg 1 away from the base 3, the fixing part 4 has a cavity 5 built in, a first control block 6 adapted to slide on the side of the second leg 2 is provided on the inner wall of the cavity 5, a second control block 7 mirror-symmetrical to the first control block 6 is provided in the cavity 5, both sides of the second control block 7 are slidably connected to the track structure built in the cavity 5, a pushing component is provided on the outer side of the fixing part 4, and the output end of the pushing component extends into the cavity 5 to control the second control block 7 to slide on the track structure.

[0030] It should be noted that the level head and the base 3 are prior art, and the connection between the two is a traditional connection method. Among them, the base 3 is used to fix the level head stably. The first leg 1 and the second leg 2 are both three in number, and are triangular in shape when fully opened to maintain stability. The fixed portion 4 is a rectangular parallelepiped, and a square cavity 5 can be placed in the rectangular parallelepiped. The cavity 5 can be provided with a fixed first control block 6, and the top surface of the first control block 6 is an arc shape to adapt to the circular surface of the second leg 2. Similarly, the second control block 7 is a mirror image of the first control block 6, and its bottom surface is also adapted to the circular surface of the second leg 2. The first control block 6 has friction particles on the part that is in contact with the surface of the second leg 2, which is convenient for slightly controlling the sliding of the second leg 2 to prevent the second leg 2 from accidentally sliding and falling and damaging the soles of the staff.

[0031] In one example, the support structure is carried to the predetermined location, and according to normal installation work, the top of the first leg 1 is swung open with the side of the base 3 as the rotation base point to form a triangular shape to ensure the stability of the support mechanism. Then the push assembly is turned on, and its output end lifts the second control block 7 upward, and the second leg 2 slides upward in the track structure built into the cavity 5, thereby releasing the pressure of the bottom of the second control block 7 on the second leg 2, so that the second leg 2 slides freely, and its bottom end conveniently falls toward the ground until it contacts the ground and stops. If the installation site is uneven, and there is a drop in the horizontal plane between the three second legs 2 or one of them and the other two second legs 2, the second leg 2 continues to slide toward the ground until it contacts the ground with the deepest drop and stops sliding. With one or two of the second legs 2 in contact with the ground as the basic horizontal plane, the second leg 2 with a drop needs to slide upward or downward, and the three second legs 2 are in a state of being horizontal and parallel to the ground, so that the bottom surface of the base 3 is horizontal and parallel to the bottom surface, which is convenient for the installation of the level head on the base 3, and can provide convenience for subsequent measurement work and improve the accuracy of measurement. Finally, by pushing the component drive output end to slide the second control block 7 downward on the track structure, pressure is applied to the second leg 2 to prevent the second leg 2 from accidentally sliding into the first leg 1 during operation, thereby affecting the normal operation of the survey.

[0032] In this embodiment, the pushing assembly includes a threaded rod 8 and a rotating head 9. One end of the threaded rod 8 is fixedly connected to the rotating head 9, and the other end passes through the top surface of the fixed part 4, extends into the cavity 5, and is rotatably connected to the top surface of the second control block 7.

[0033] Furthermore, a plurality of regularly spaced convex marks 10 are arranged around the top surface of the rotating head 9 .

[0034] It should be noted that the threaded rod 8 is used to lift the second control block 7, and the rotating head 9 is convenient for grasping and driving the second control block 7 to rotate. The top surface of the rotating head 9 is provided with a convex mark 10 to increase the grasping friction force, and the rotating head 9 is easily rotated.

[0035] In this embodiment, the track structure includes sliding grooves 16 arranged on both sides of the cavity 5 , and both sides of the second control block 7 can slide up and down in the sliding grooves 16 .

[0036] In one example, when the threaded rod 8 rotates clockwise, it drives the second control block 7 to rise, and the second control block 7 can slide upward in the sliding groove 16 to release pressure on the second leg 2; when the threaded rod 8 rotates counterclockwise, the second control block 7 can slide downward in the sliding groove 16 to apply pressure on the second leg 2.

[0037] Example 2

[0038] See also Figures 3 to 5In another preferred embodiment, the pushing component includes a concave block 11 arranged on the top surface of the fixed part 4, and a swinging element 12 is arranged between the left and right protrusions of the concave block 11. The two side surfaces of the swinging element 12 are dampingly connected to the inner side surfaces of the protrusions of the concave block 11 through friction pads 13; a pushing rod 14 is arranged below the swinging element 12, and the top end of the pushing rod 14 is connected to the bottom surface of the swinging element 12 through a flexible member 15, and the bottom end of the pushing rod 14 passes through the top surface of the fixed part 4, extends into the cavity 5 and is connected to the top surface of the second control block 7.

[0039] Preferably, the flexible member 15 is a connecting rope or an iron chain.

[0040] It should be noted that the swing element 12 is Figure 4 As shown, the swing element 12 and the friction pad 13 form a damping effect, and the swing element 12 cannot swing freely without a large external force. The friction pad 13 is a friction pad 13 commonly sold in the market. The connecting rope is a high-strength polyethylene rope, which is made of high-strength fiber and has the advantages of being strong and wear-resistant.

[0041] In one example, when the swing element 12 first swings toward the top surface of the fixed part 4, it presses down the top of the push rod 14, and the push rod 14 pushes the second control block 7 downward, and the second control block 7 slides downward on the track structure until the push rod 14 can no longer push. At this time, the swing element 12 stays at the top of the push rod 14. Under the action of damping, the swing element 12 stably presses the push rod 14, so that the second control block 7 can stably apply pressure to the second leg 2, preventing the second leg 2 from sliding freely without pressure and affecting the supporting function. When the pressure on the second leg 2 needs to be released, the swing element 12 is lifted in the direction opposite to the top surface of the fixed part 4, and the swing element 12 drives the flexible member 15 to pull the push rod 14, so that the push rod 14 slides upward in the track structure, releasing the pressure on the second leg 2, and the second leg 2 can slide.

[0042] Example 3

[0043] See also Figure 2 , Figures 5 to 7 In another preferred embodiment, the track structure includes slide bars 17 arranged on both sides of the cavity 5, and the second control block 7 is sleeved outside the slide bars 17 and slides up and down.

[0044] Specifically, the track structure can be configured as a slide bar 17 having a friction surface, so as to increase the friction force on the sliding of the second control block 7, so as to make the second leg 2 more stable when pressure is applied.

[0045] Example 4

[0046] See also Figure 1 and Figure 3As a further improvement of Example 1, the bottom end of the second leg 2 is detachably connected with a tail end element.

[0047] Furthermore, the tail end element is a plurality of gravity blocks 18 with different weights.

[0048] Specifically, the gravity block is Figure 1 As shown, the weight blocks 18 of different weights can be replaced according to different places. The tail end element can use weight blocks 18 of different weights, and the weight block 18 can increase the center of gravity of the second leg 2 and improve the stability of the second leg 2 when in use.

[0049] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. An electronic level for surveying and mapping, comprising a level head, Features: The bottom of the level head is connected to a support mechanism, the support mechanism includes at least three first legs and second legs corresponding to the number of the first legs, and a base hinged to the top ends of the three first legs, and the top surface of the base is connected to the bottom of the level head; The second leg is slidably connected inside the first leg, and a fixing portion for controlling the sliding of the second leg is provided at one end of the first leg away from the base. The fixing portion has a built-in cavity, and an inner wall of the cavity is provided with a first control block adapted to slide on the side of the second leg. A second control block mirror-symmetrical to the first control block is provided in the cavity, and both sides of the second control block are slidably connected to the track structure built into the cavity. A pushing component is provided on the outer side surface of the fixing portion, and an output end of the pushing component extends into the cavity to control the second control block to slide on the track structure.

2. An electronic level for surveying and mapping according to claim 1, Features: The pushing assembly comprises a threaded rod and a rotating head, wherein one end of the threaded rod is fixedly connected to the rotating head, and the other end of the threaded rod passes through the top surface of the fixing portion, extends into the cavity and is rotatably connected to the top surface of the second control block.

3. An electronic level for surveying and mapping according to claim 2, Features: A plurality of regularly spaced convex marks are arranged around the top surface of the rotating head.

4. The electronic level for surveying and mapping according to claim 1, Features: The pushing assembly comprises a concave block arranged on the top surface of the fixing portion, a swing element is arranged between the left and right protrusions of the concave block, and the two side surfaces of the swing element are dampingly connected to the inner side surfaces of the protrusions of the concave block through friction pads; A push rod is provided below the swing element, the top end of the push rod is connected to the bottom surface of the swing element through a flexible member, and the bottom end of the push rod passes through the top surface of the fixing portion, extends into the cavity and is connected to the top surface of the second control block.

5. An electronic level for surveying and mapping according to claim 4, Features: The flexible member is a connecting rope or an iron chain.

6. The electronic level for surveying and mapping according to claim 1, Features: The track structure comprises sliding grooves arranged at two sides of the cavity, and two sides of the second control block can slide up and down in the sliding grooves.

7. The electronic level for surveying and mapping according to claim 1, Features: The track structure includes slide bars arranged on both sides of the cavity, and the second control block is sleeved outside the slide bars and slides up and down.

8. The electronic level for surveying and mapping according to claim 1, Features: The bottom end of the second leg is detachably connected with a tail end element.

9. The electronic level for surveying and mapping according to claim 8, Features: The tail end elements are gravity blocks with different weights.

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