Hand-held electronic measurer for land measurement

Abstract

The utility model discloses a hand-held electronic measurer for territorial survey, which relates to the technical field of measurers and comprises a measuring wheel capable of rolling on the ground, and an electronic counter is coaxially arranged on a wheel shaft of the measuring wheel. The retractable handrail used for being pushed by the measuring wheel in a hand-held mode is provided with a retractable cylinder, and a retractable rod is connected into the retractable cylinder in a sliding mode; the contraction cylinder is movably connected with the folding piece; and the lower end of the folding piece is movably connected with the fixed column. When the retractable handrail is not used, the retractable rod can be retracted into the retractable cylinder, and the length of the whole retractable handrail can be shortened by one third; and after the nut is loosened, the folding piece can be folded, so that the retractable handrail is further folded, the overall length of the retractable handrail is greatly reduced, the size of the whole measurer is reduced, and the measurer is convenient to carry and box.

Description

Technical Field

[0001] The utility model specifically relates to the technical field of measuring instruments, in particular to a handheld electronic measuring instrument for land surveying. Background Art

[0002] The traditional wheeled distance meter includes a distance measuring wheel, a counter connected to the distance measuring wheel, a wheel frame on the distance measuring wheel, and a handle connected to the wheel frame; the wheeled distance meter is designed and manufactured for outdoor distance measurement and is suitable for various ground conditions, including hillsides, grasslands, rugged construction sites, etc.

[0003] Chinese patent publication number CN 208313256 U discloses a handheld wheeled distance meter, the technical solution of which mainly includes a wheel frame, a distance measuring wheel and a counter, the distance measuring wheel includes a first wheel body and a second wheel body, the first wheel body is mounted on the wheel frame, the counter is arranged on the wheel frame to be connected with the first wheel body, a telescopic rod is coaxially connected between the first wheel body and the second wheel body, and a locking component for limiting the separation of the first wheel body and the second wheel body is arranged between the first wheel body and the second wheel body when the first wheel body and the second wheel body are close together.

[0004] The handgrip of the handheld wheel rangefinder in the above patent cannot be folded or extended; the size is too large to be carried in a box; and when carried in a car, it takes up a lot of space; it is inconvenient to carry and use. Utility Model Content

[0005] The purpose of the utility model is to provide a handheld electronic measuring instrument for land surveying, which can first shrink one-third of its length, and then fold the handrail twice to achieve folding, which greatly reduces the length of the handrail, effectively saves the occupied area, is very easy to carry, and can also be packed and carried, so as to solve the technical problems raised in the above background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A handheld electronic measuring device for land surveying, comprising

[0008] A measuring wheel capable of rolling on the ground, wherein the wheel axle of the measuring wheel is coaxially provided with an electronic counter;

[0009] The retractable handrail is used for measuring the retractable handrail pushed by the wheel and has a retractable cylinder in which a retractable rod is slidably connected;

[0010] The shrinking tube is movably connected to the folding piece; the lower end of the folding piece is movably connected to the fixing column;

[0011] The end surface of the folding piece is arranged in an "H" shape, and C-shaped grooves are provided on both sides of the folding piece to facilitate the contraction of the fixing column and the contraction tube.

[0012] As a further technical solution of the utility model, both ends of the axle of the measuring wheel are mounted in cooperation with the outer frame through bearings; the outer frame is U-shaped; the electronic counter is fixed on a side bracket, and the side bracket is fixed on one side of the outer frame.

[0013] As a further technical solution of the utility model, a flange is welded to one end of the fixing column, and the flange is also fixedly connected to the outer frame.

[0014] As a further technical solution of the utility model, an L-fixing frame is fixed to one end of the retractable rod away from the retractable tube, and a display is installed on the L-fixing frame.

[0015] As a further technical solution of the utility model, an armrest is connected to one end of the L-fixing frame on which the display is installed. The armrest is arranged in an L shape, and a rubber anti-slip sleeve is arranged on the outside of the armrest.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] 1. The utility model can retract the retractable rod into the retractable cylinder when not in use, which can shorten the length of the entire retractable armrest by one third; after loosening the nut, the folding piece can be folded, so that the retractable armrest can be further folded, which greatly reduces the overall length of the retractable armrest, thereby reducing the size of the entire measuring device, making it easier to carry and pack the measuring device;

[0018] 2. In the utility model, the end surface of the folding member is arranged in an "H" shape, and C-shaped grooves are provided on both sides of the folding member to facilitate the contraction of the fixed column and the contraction tube, thereby facilitating the two-way folding of the fixed column and the contraction tube; the structure is simple and the operation is convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the utility model in use state.

[0020] Figure 2 This utility model Figure 1 Schematic diagram from another perspective.

[0021] Figure 3 This utility model Figure 2 Schematic diagram from another perspective.

[0022] Figure 4 It is a schematic diagram of the plane structure in the utility model.

[0023] Figure 5 It is a schematic diagram of the structure of the utility model in a contracted state.

[0024] In the figure: 1-measuring wheel, 2-outer frame, 3-side bracket, 4-electronic counter, 5-retractable armrest, 6-L fixing frame, 7-display, 8-armrest;

[0025] 51 -fixed column, 52 -folding piece, 53 -retractable cylinder, 54 -retractable rod. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] See also Figure 1-5 In an embodiment of the utility model, a handheld electronic measuring device for land surveying includes a measuring wheel 1 that can roll on the ground, and an electronic counter 4 is coaxially arranged on the axle of the measuring wheel 1;

[0028] The retractable handrail 5, which is used for the measuring wheel 1 to be pushed by hand, has a retractable cylinder 53, in which a retractable rod 54 is slidably connected;

[0029] The shrinking tube 53 is movably connected to the folding member 52 ; the lower end of the folding member 52 is movably connected to the fixing column 51 .

[0030] To be more specific, convex shafts are provided on both sides of the lower end of the shrinking tube 53 and the upper end of the fixed column 51, which are movably connected to the two ends of the folding member 52 respectively; and are fixed by nuts; the end face of the folding member 52 is arranged in an "H" shape, and C-shaped grooves are opened on both sides of the folding member 52 to facilitate the contraction of the fixed column 51 and the shrinking tube 53.

[0031] By adopting the above technical solution, when not in use, the retractable rod 54 can be retracted into the retractable tube 53, which can shorten the length of the entire retractable armrest 5 by one third; after loosening the nut, the folding part 52 can be folded, so that the retractable armrest 5 can be further folded, which greatly reduces the overall length of the retractable armrest 5, thereby reducing the size of the entire measuring instrument, making it easier to carry and pack the measuring instrument.

[0032] In this embodiment, both ends of the axle of the measuring wheel 1 are mounted on the outer frame 2 through bearings; the outer frame 2 is U-shaped; the electronic counter 4 is fixed on the side bracket 3, and the side bracket 3 is fixed on one side of the outer frame 2.

[0033] More specifically, an L-fixing frame 6 is fixed to one end of the retractable rod 54 away from the retractable tube 53 , and a display 7 is mounted on the L-fixing frame 6 .

[0034] By adopting the above technical solution, the electronic counter 4 is coaxially arranged with the axle of the measuring wheel 1. The electronic counter 4 counts once for each rotation of the measuring wheel 1. The measured distance is obtained by multiplying the number of times counted by the electronic counter 4 by the circumference of the measuring wheel 1.

[0035] The electronic counter 4 is electrically connected to the display 7; the count can be displayed on the display 7, so that the operator can observe and read the count easily (the electrical connection method between the electronic counter 4 and the display 7 is a prior art and will not be described in detail).

[0036] In this embodiment, a flange is welded to one end of the fixing column 51 , and the flange is also fixedly connected to the outer frame 2 .

[0037] In this embodiment, an armrest 8 is connected to one end of the L-fixing frame 6 on which the display 7 is installed. The armrest 8 is arranged in an L shape, and a rubber anti-slip sleeve is provided on the outside of the armrest 8.

[0038] The working principle of the utility model is that when in use, the handrail 8 is held to push the measuring wheel 1 to walk on the ground; the electronic counter 4 is coaxially arranged with the axle of the measuring wheel 1, and the electronic counter 4 counts once for each rotation of the measuring wheel 1. The measured distance is obtained by multiplying the number of times counted by the electronic counter 4 by the circumference of the measuring wheel 1; the count can be displayed on the display 7, so as to facilitate the operator's observation and reading.

[0039] When not in use, the retractable rod 54 can be retracted into the retractable tube 53, which can shorten the length of the entire retractable armrest 5 by one third; after loosening the nut, the folding part 52 can be folded, so that the retractable armrest 5 can be further folded, which greatly reduces the overall length of the retractable armrest 5, thereby reducing the size of the entire measuring instrument, making it easier to carry and pack the measuring instrument.

[0040] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0041] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A handheld electronic measuring instrument for land surveying, characterized in that: include A measuring wheel (1) capable of rolling on the ground, wherein an electronic counter (4) is coaxially arranged on the axle of the measuring wheel (1); A retractable handrail (5) for manually pushing the measuring wheel (1) comprises a retractable cylinder (53) in which a retractable rod (54) is slidably connected; The shrinking tube (53) is movably connected to the folding member (52); the lower end of the folding member (52) is movably connected to the fixing column (51); The end surface of the folding piece (52) is arranged in an "H" shape, and C-shaped grooves are provided on both sides of the folding piece (52) to facilitate the contraction of the fixing column (51) and the contraction tube (53).

2. The handheld electronic measuring device for land surveying according to claim 1 is characterized in that: The two ends of the axle of the measuring wheel (1) are mounted in cooperation with the outer frame (2) via bearings; the outer frame (2) is arranged in a U shape; the electronic counter (4) is fixed on a side bracket (3), and the side bracket (3) is fixed on one side of the outer frame (2).

3. The handheld electronic measuring device for land surveying according to claim 1 is characterized in that: A flange is welded to one end of the fixing column (51), and the flange is also fixedly connected to the outer frame (2).

4. The handheld electronic measuring device for land surveying according to claim 1 is characterized in that: An L-fixing frame (6) is fixed to one end of the shrinking rod (54) away from the shrinking tube (53), and a display (7) is installed on the L-fixing frame (6).

5. The handheld electronic measuring device for land surveying according to claim 4 is characterized in that: One end of the L-fixing frame (6) on which the display (7) is installed is also connected to an armrest (8), the armrest (8) is arranged in an L shape, and a rubber anti-slip sleeve is arranged on the outside of the armrest (8).

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