CN211783492U

CN211783492U - High-precision measuring scale

Info

Publication number: CN211783492U
Application number: CN202020449619.1U
Authority: CN
Inventors: 周长亮
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-03-31
Filing date: 2020-03-31
Publication date: 2020-10-27
Anticipated expiration: 2030-03-31

Abstract

The utility model provides a high-precision measuring scale relates to measuring equipment technical field, and it is not high to have solved measuring scale measurement accuracy, can't read the technical problem of numerical value directly perceived. The high-precision measuring ruler comprises a ruler body with a hollow structure, a reference piece movably arranged in the ruler body and a deviation reading structure arranged in the ruler body; the reference piece is always kept parallel to the horizontal plane or the vertical plane; when one side surface of the ruler body is attached to the surface to be measured, the reference piece is overlapped with any reading of the deviation reading structure, and the deviation value can be quickly read. The utility model discloses can accomplish more subtle scale and refer to, utilize gravity to be perpendicular decurrent principle and the balanced principle of lever all the time, the body of ruler and accurate calibrated scale axis of standard on the cooperation, just can be convenient, directly perceived and accurate judge whether perpendicular or level of testee to reach the mesh ground of vertical detection or level detection.

Description

High-precision measuring scale

Technical Field

The utility model belongs to the technical field of the measuring equipment technique and specifically relates to a can measure high accuracy measuring tape of straightness or levelness that hangs down.

Background

The ruler can measure a vertical or horizontal ruler and a digital display ruler, the common horizontal ruler judges the vertical or horizontal of a measuring surface by observing the position of water drops by naked eyes, and the measuring ruler needs to be observed by naked eyes and has larger water drops, so that larger errors exist in the judgment; furthermore, the leveling instrument and the digital display instrument still have the problem of insufficient precision, can not finish the millimeter-scale detection of the perpendicular state of the measured object with the length of 1 meter, and can not obtain the numerical value intuitively and accurately.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a high-precision measuring scale to the measuring scale measurement accuracy who exists is not high among the solution prior art, can't read numerical value's technical problem directly perceived.

In order to achieve the above purpose, the utility model provides a following technical scheme:

the utility model provides a high-precision measuring ruler, which comprises a ruler body with a hollow structure, a reference piece movably arranged in the ruler body and a deviation reading structure arranged in the ruler body; the reference piece is always kept parallel to a horizontal plane or a vertical plane; when one side surface of the ruler body is attached to the surface to be measured, the reference piece is overlapped with any reading of the deviation reading structure.

On the basis of the technical scheme, the utility model discloses can also do following improvement.

As a further improvement of the utility model, the ruler body is a vertical detection ruler body, one end of the reference piece is hinged on the top of the ruler body, and the other end is freely suspended in the ruler body and is kept parallel to a vertical plane through gravity; or the ruler body is a horizontal detection ruler body, and the reference piece is kept parallel to the horizontal plane through gravity balance.

As a further improvement, when being the vertical detection blade, the reference piece includes suspension wire and pendant, the suspension wire is fixed the blade top, the pendant is placed the blade bottom, deviation reading structure is the scale plate, 0 scale mark on the scale plate is located the centre, correspond on the blade deviation reading structure position is provided with the observation window.

As a further improvement, when for the vertical detection blade, the reference piece includes pendulum post and vertical pointer, the pendulum post rotates through vertical bearing and sets up the blade top, vertical pointer sets up the pendulum post is terminal and with arbitrary reading coincidence of deviation reading structure, deviation reading structure is the scale plate, 0 scale mark on the scale plate is located the centre, correspond on the blade deviation reading structure position is provided with the observation window.

As a further improvement of the present invention, when the level detection ruler body is used, the reference member includes a swing rod, a counterweight structure and a horizontal pointer, the swing rod is rotatably disposed in the ruler body through a horizontal bearing, and the horizontal bearing is used as a fulcrum to form a lever structure; the horizontal pointer and the counterweight structure are respectively arranged at two ends of the swing rod, the horizontal pointer is coincided with any reading of the deviation reading structure, the deviation reading structure is a scale plate, a 0 scale mark on the scale plate is positioned in the middle, and an observation window is arranged on the ruler body corresponding to the deviation reading structure.

As a further improvement, when detecting the blade for the level, the benchmark piece is in including returning font sealed tube, setting the interior packing liquid of sealed tube and placing the cursory on the liquid level, lie in the blade the sealed tube both sides position is provided with the reflector panel of slope respectively, deviation reading structure is for setting up scale mark on the sealed tube pipe wall, on the blade just right deviation reading structure position is just right the reflector panel position all is provided with the observation window.

As a further improvement, the ruler body is further provided with a first fine adjustment structure connected with the deviation reading structure, through the first fine adjustment structure can be adjusted the deviation reading structure is in the position in the ruler body.

As a further improvement, the swing rod is further provided with a second fine adjustment structure, through the second fine adjustment structure is used for adjusting the gravity center position of the swing rod, so that the second fine adjustment structure is located on the two sides of the horizontal bearing, the swing rod is balanced.

As a further improvement, the high-precision measuring scale further comprises a locking structure which is arranged on the scale body and can lock or loosen the reference piece.

As a further improvement of the utility model, the ruler body is internally close to the deviation reading structure position is provided with a backlight lamp which is convenient for clearly reading.

Compared with the prior art, the utility model following beneficial effect has:

the utility model provides a high-precision measuring scale can do more subtle scale reference, utilizes the gravity to be the principle and the lever balance principle that is vertical downward all the time, cooperates with the body of the standard ruler and the accurate calibrated scale axis, can be convenient, directly perceived and accurate judge whether the testee is vertical or horizontal, thereby reach the purpose of vertical detection or horizontal detection; the suspension wire, the pendant (swing post, pointer) and the swing rod are placed in a basically closed space, so that the influence (mainly wind) of the external environment on the suspension wire, the pendant (swing post, pointer) and the swing rod is reduced, the influence plays a certain role in the accuracy of the suspension wire, the pendant and the swing rod, and the closed space is also favorable for the reference part to quickly reach a stable state and a static state to obtain a measurement result; the adjustable central axis of the dial can help the vertical or horizontal detection ruler to always keep a precise state; an observation window is arranged, and a backlight (electric light source) is arranged in the ruler body, so that the tool can be normally used in a dark environment; the observation angle of the observation port is increased by arranging a small reflector (mirror); in the utility model, the fixed point is at one end of the ruler body, and the observation point is at the other end of the ruler body, so that the longer the ruler body is, the higher the precision is; through setting up the locking structure, press the switch and make two clamping pieces of upper and lower (left and right sides) press from both sides tight pendulum rod or pendant, loosen the hand and slowly release upper and lower clamping piece by buffer spring, accomplish and promote steady work.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a front view of a first embodiment of the high-precision measuring tape of the present invention;

FIG. 2 is a side view of a first embodiment of the high-precision measuring tape of the present invention;

FIG. 3 is a front view of a second embodiment of the high-precision measuring tape of the present invention;

FIG. 4 is a side view of a second embodiment of the high-precision measuring tape of the present invention;

FIG. 5 is a top view of a third embodiment of the high-precision measuring tape of the present invention;

FIG. 6 is a front view of a third embodiment of the high-precision measuring tape of the present invention;

fig. 7 is a top view of a fourth embodiment of the high-precision measuring tape of the present invention;

FIG. 8 is a front view of a fourth embodiment of the high precision measuring tape of the present invention;

fig. 9 is a front view of the locking structure in an open position according to an embodiment of the high-precision measuring tape of the present invention;

fig. 10 is a side view of an embodiment of a high-precision measuring tape of the present invention with the locking structure in an open position;

fig. 11 is a top cross-sectional view of an embodiment of the high-precision measuring tape of the present invention with the locking structure in an open position;

fig. 12 is a front view of the locking structure in a locked state according to an embodiment of the high-precision measuring tape of the present invention;

fig. 13 is a side view of the locking structure in a locked position in an embodiment of the high-precision measuring tape of the present invention;

fig. 14 is a top cross-sectional view of an embodiment of the high-precision measuring tape of the present invention with the locking structure in a locked state.

In the figure 1, a ruler body; 11. plugging; 2. a reference member; 21. hanging wires; 22. a pendant; 23. a box cover; 24. Swinging the column; 25. a vertical pointer; 26. a swing rod; 27. a counterweight structure; 28. a horizontal pointer; 29. a sealing tube; 3. a deviation reading structure; 4. an observation window; 5. a magnet block; 6. a locking structure; 61. a lock section; 62. An adjustment section; 63. a fixed part.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

The utility model provides a high-precision measuring ruler, which comprises a ruler body 1 with a hollow structure, a reference piece 2 movably arranged in the ruler body 1 and a deviation reading structure 3 arranged in the ruler body 1; the reference member 2 is always kept parallel to the horizontal plane or the vertical plane; when the ruler body 1 is in an initial position, the datum part 2 coincides with the 0 scale mark of the deviation reading structure 3, namely the central axis, when one side surface of the ruler body 1 is attached to a surface to be measured, the datum part 2 coincides with any reading of the deviation reading structure 3, and when the ruler body 1 is placed on the surface to be measured, if the datum part 2 is still coincident with the 0 scale mark of the deviation reading structure 3, namely the central axis, the surface to be measured is horizontal or vertical.

The ruler body 1 is of a rectangular rod-shaped structure, is hollow inside and is made of aluminum materials or cast iron materials; the open ends of the two ends of the ruler body 1 are provided with plugs 11 which can be opened and closed; the connection structure of the plug 11 and the ruler body 1 can adopt the clamping and inserting connection mode. The specific structure is not described herein again, and the structure in the prior art can be adopted.

As an optional implementation mode, the ruler body 1 is a vertical detection ruler body 1, one end of a reference piece 2 is hinged to the top of the ruler body 1, and the other end of the reference piece is freely suspended in the ruler body 1 and is kept parallel to a vertical plane through gravity; or, the ruler body 1 is a horizontal detection ruler body 1, and the reference piece 2 is kept parallel to the horizontal plane through gravity balance.

Example 1:

as shown in fig. 1 and 2, in this embodiment 1, the ruler body 1 is a vertical detection ruler body, the reference piece 2 includes a suspension wire 21 and a pendant 22, the suspension wire 21 is fixed on the top of the ruler body 1 through a suspension wire clamp, the suspension wire clamp here is implemented by a product in the prior art, as long as the end of the suspension wire 21 can be clamped, specifically, a hook-shaped or clip-shaped structure can be adopted, the suspension wire clamp is fixed on the ruler body 1 or the plug 11, as shown in fig. 2, the suspension wire clamp is fixed on the front side wall of the ruler body 1, the pendant 22 is placed at the bottom of the ruler body 1, the front side of the bottom of the ruler body 1 is provided with an opening at the position of the pendant 22, and a box cover 23 is detachably arranged on the opening, because the size of 22 is relatively large, and the suspension wire 21 is located at the front side of the ruler body 1; the detachable connection between the box cover 23 and the ruler body 1 can be connected in a clamping or splicing way; of course, screw and nut connection can also be adopted; deviation reading structure 3 is the scale plate, and 0 scale mark on the scale plate is located the centre, is located 0 scale mark both ends and is positive and negative scale mark respectively, corresponds deviation reading structure 3 position on the blade of ruler 1 and is provided with observation window 4. A transparent light-transmitting cover is arranged on the observation window 4 to facilitate observation; when the ruler body 1 is placed on a surface to be measured, whether the surface to be measured is vertical or not is judged by the reference part 2 corresponding to a certain scale mark on the deviation reading structure 3, and when the reference part 2 is over against the deviation reading structure 3, namely the 0 scale mark of the scale plate, the surface to be measured is vertical. In the present application, the pendant 22 is made of a non-ferrous material.

Specifically, be provided with magnet piece 5 on blade 1, because of the face that awaits measuring often is the iron material surface, can increase blade 1 and the laminating firmness between the face of awaiting measuring through magnet piece 5. The number and arrangement position of the magnet blocks 5 are not particularly limited.

Because the benchmark piece 2 when using, the benchmark deviation can appear, need finely tune, still be provided with the first fine setting structure of being connected with deviation reading structure 3 on the blade 1, can adjust the position of deviation reading structure 3 in the blade 1 through first fine setting structure.

Specifically, in the utility model, the first fine tuning structure comprises a teaching port arranged on both sides of the ruler body 1 and a teaching piece connected with the teaching port and the deviation reading structure 3;

specifically, the teaching piece comprises a screw nut structure, the deviation reading structure 3 is connected with a screw through a nut, two ends of the screw are rotatably arranged on the teaching port, and two ends of the screw are provided with cross grooves for inserting cross knives; insert the cross inslot through the cross sword and drive the lead screw rotatory, drive the nut when the lead screw is rotatory and remove, the nut removes electronic deviation reading structure 3 and removes, makes the suspension wire 21 of reference part 2 all the time with deviation reading structure 3's 0 scale mark also be the axis coincidence through removing deviation reading structure 3 position.

In this embodiment, the deviation reading structure 3 is made of acrylic plate, and the acrylic plate is provided with scale marks.

In order to quickly and stably lock the power assisting pendant 22 when the power assisting pendant 22 is not used, the high-precision measuring ruler further comprises a locking structure 6 which is arranged on the ruler body 1 and can lock or unlock the reference part 2.

Specifically, the locking structure 6 comprises an adjusting part 62 and a U-shaped fixing part 63, wherein the V-shaped locking part 61 and the locking part 61 are arranged at an obtuse angle, the U-shaped fixing part 63 is arranged in an inner cavity of the ruler body 1, the fixing part 63 is fixed on the inner wall of the ruler body 1, two ends of the locking part 61 are rotatably connected to an opening of the fixing part 63, the adjusting part 62 is connected to a corner of the locking part 61, the adjusting part 62 penetrates through the side wall of the ruler body 1 and extends to the outside, a strip-shaped opening is arranged on the ruler body 1, the adjusting part 62 can move up and down relative to the strip-shaped opening, when the adjusting part 62 moves up and down, the locking part 61 can be lifted up and down in the vertical direction, the specification of the V-shaped inner cavity of the locking part 61 is matched with the specification of the pendant 22 of the reference piece 2, when the locking part 61 is horizontal, namely in a locking state, the pendant 22 is free to swing side-to-side for vertical measurements.

In order to facilitate observation and use in an environment with poor light, a backlight lamp is arranged in the ruler body 1, the backlight lamp is positioned at the rear side of the deviation reading structure 3, namely the backlight lamp, the deviation reading structure 3 and the suspension wire 21 are sequentially arranged from the rear side to the front side of the ruler body 1; the cable of backlight is laid in the ruler body 1, the control switch is arranged on the side wall of the ruler body 1, the power supply can be of a battery type, and the battery is placed on the non-measurement contact surface of the ruler body 1. The specific connection relationship can be realized by adopting a connection structure in the prior art.

For the convenience of observation, a reflector can be arranged in the ruler body 1 and used for reflecting light rays of a backlight lamp to the deviation reading structure 3 or reflecting external light rays to the deviation reading structure 3. The specific setting position and the inclination angle are determined by utilizing the light reflection principle after being measured according to the specification of the ruler body 1 and the position of the deviation reading structure 3.

In this embodiment, the suspension wire 21 is made of flexible wire, and may be made of nylon, carbon or PE; of course, it can also be made of hard wire, such as aluminum wire made of non-magnetic material.

Example 2:

as shown in fig. 3 and 4, in this embodiment 2, the ruler body 1 is a vertical detection ruler body, the reference piece 2 includes a swing post 24 and a vertical pointer 25, the swing post 24 is rotatably disposed on the top of the ruler body 1 through a vertical bearing, and the swing post 24 is located in the middle of the inner cavity of the ruler body 1, the vertical pointer 25 is disposed at the end of the swing post 24 and coincides with any reading of the deviation reading structure 3, the deviation reading structure 3 is a scale plate, the 0 scale mark on the scale plate is located in the middle, and the two ends of the 0 scale mark are respectively a positive scale mark and a negative scale mark, in this embodiment, the deviation reading structure 3 is made of two acrylic plates, the two acrylic plates are both provided with scale marks, and the two acrylic plates are disposed on the front side and the rear side of the vertical pointer 25.

An observation window 4 is arranged on the ruler body 1 corresponding to the position of the deviation reading structure 3, and a transparent light-transmitting cover is arranged on the observation window 4 so as to facilitate observation.

When the ruler body 1 is placed on a surface to be measured, whether the surface to be measured is vertical or not is judged by the reference part 2 corresponding to a certain scale mark on the deviation reading structure 3, and when the reference part 2 is over against the deviation reading structure 3, namely the 0 scale mark of the scale plate, the surface to be measured is vertical. In the present application, the pendulum post 24 is made of a non-ferrous material.

In order to quickly and stably assist the swing post 24 and lock the swing post 24 when not in use, the high-precision measuring ruler further comprises a locking structure 6 which is arranged on the ruler body 1 and can lock or release the reference part 2.

As shown in fig. 9-14, specifically, the locking structure 6 includes an adjusting portion 62 in which a V-shaped locking portion 61 and the locking portion 61 form an obtuse angle, a U-shaped fixing portion 63 disposed in the inner cavity of the ruler body 1, the fixing portion 63 is fixed on the inner wall of the ruler body 1, two ends of the locking portion 61 are rotatably connected to an opening of the fixing portion 63, the adjusting portion 62 is connected to a corner of the locking portion 61, and the adjusting portion 62 extends to the outside through the side wall of the ruler body 1, a bar-shaped opening is disposed on the ruler body 1, the adjusting portion 62 can move up and down relative to the bar-shaped opening, when the adjusting portion 62 moves up and down, the locking portion 61 can be lifted up and down in the vertical direction, the V-shaped inner cavity specification of the locking portion 61 is matched with the swing post 24 specification of the reference member 2, as shown in fig. 12-14, when the locking portion 61 is horizontal, i.e. in the locking, as shown in fig. 9 to 11, when the lock portion 61 is lifted, that is, in the released state, the swing post 24 is in a free state capable of swinging left and right for vertical measurement.

In order to facilitate observation and use in an environment with poor light, a backlight lamp is arranged in the ruler body 1 and is positioned at the rear side of the deviation reading structure 3, namely the backlight lamp, the acrylic plate scale plate, the swing column 24 and the acrylic plate scale plate are sequentially arranged from the rear side to the front side of the ruler body 1; the cable of backlight is laid in the ruler body 1, the control switch is arranged on the side wall of the ruler body 1, the power supply can be of a battery type, and the battery is placed on the non-measurement contact surface of the ruler body 1. The specific connection relationship can be realized by adopting a connection structure in the prior art.

Example 3:

as shown in fig. 5 and 6, in the present embodiment 3, the blade 1 is a level detection blade 1, the reference member 2 includes a swing link 26, a counterweight structure 27 and a horizontal pointer 28, the swing link 26 is rotatably disposed in the blade 1 through a horizontal bearing, and a lever structure is formed with the horizontal bearing as a fulcrum; horizontal pointer 28 and counter weight structure 27 set up respectively at pendulum rod 26 both ends, and horizontal pointer 28 and the arbitrary reading coincidence of deviation reading structure 3, deviation reading structure 3 is the scale plate, 0 scale mark on the scale plate is located the centre, it is positive and negative scale mark respectively to be located 0 scale mark both ends, in this embodiment, deviation reading structure 3 adopts two ya keli boards to make, all be provided with the scale mark on two ya keli boards, and two ya keli boards set up respectively in horizontal pointer 28's front side and rear side, it is provided with observation window 4 to correspond deviation reading structure 3 positions on the chi body 1, be provided with transparent printing opacity cover on observation window 4, in order to make things convenient for the observation.

When the ruler body 1 is placed on a surface to be measured, whether the surface to be measured is horizontal or not is judged by the reference part 2 corresponding to a certain scale mark on the deviation reading structure 3, and when the reference part 2 is over against the deviation reading structure 3, namely the 0 scale mark of the scale plate, the level of the surface to be measured is represented. In the present application, the rocker 26 is made of a non-ferrous material.

In this embodiment, the swing link 26 is a hollow structure, the counterweight structure 27 is a weight disposed in an inner cavity of the swing link 26, and the horizontal bearing is disposed at the rear side of the top of the swing link 26, so that the swing link 26 forms a lever balance structure by the weight.

Furthermore, a second fine adjustment structure is further disposed on the swing rod 26, and the center of gravity of the swing rod 26 is adjusted through the second fine adjustment structure, so that the swing rods 26 located on both sides of the horizontal bearing are balanced. Specifically, the second fine adjustment structure is an adjustment bolt, a threaded hole is formed in the tail end of the swing rod 26, the adjustment bolt is screwed in the threaded hole, and the adjustment bolt is screwed in or out to further perform fine adjustment on the balance of the swing rod 26.

In order to quickly and stably assist the swing rod 26 and lock the swing rod 26 when the high-precision measuring ruler is not used, the high-precision measuring ruler further comprises a locking structure 6 which is arranged on the ruler body 1 and can lock or release the reference piece 2.

Specifically, the locking structure 6 comprises an adjusting part 62 with a V-shaped locking part 61 and a locking part 61 arranged at an obtuse angle, and a U-shaped fixing part 63 arranged in the inner cavity of the ruler body 1, the fixing part 63 is fixed on the inner wall of the ruler body 1, two ends of the locking part 61 are rotatably connected with the opening of the fixing part 63, the adjusting part 62 is connected at the corner of the locking part 61, the adjusting part 62 extends to the outside through the side wall of the ruler body 1, the ruler body 1 is provided with a strip-shaped opening, the adjusting part 62 can move up and down relative to the strip-shaped opening, when the adjusting part 62 moves up and down, the locking part 61 can be lifted up or down in the vertical direction, the specification of the V-shaped inner cavity of the locking part 61 is matched with the specification of the swing rod 26 of the reference piece 2, when the locking part 61 is horizontal, namely in a locking state, the swing rod 26 cannot swing left and right under the, the pendulum bar 26 is free to swing side to side for vertical measurement.

In order to facilitate observation and use in an environment with poor light, a backlight lamp is arranged in the ruler body 1 and is positioned at the rear side of the deviation reading structure 3, namely the backlight lamp, the acrylic plate scale plate, the swing rod 26 and the acrylic plate scale plate are sequentially arranged from the rear side to the front side of the ruler body 1; the cable of backlight is laid in the ruler body 1, the control switch is arranged on the side wall of the ruler body 1, the power supply can be of a battery type, and the battery is placed on the non-measurement contact surface of the ruler body 1. The specific connection relationship can be realized by adopting a connection structure in the prior art.

Example 4:

as shown in fig. 7 and 8, in this embodiment 4, the ruler body 1 is a level detection ruler body 1, the reference member 2 includes a rectangular-shaped sealing tube 29, a filling liquid disposed in the sealing tube 29, and a float disposed on a liquid level, inclined reflective plates are disposed at two sides of the sealing tube 29 in the ruler body 1, the reflective plates are made of reflective mirrors, and a transparent cover is disposed on the observation window 4 for facilitating observation; the deviation reading structure 3 is a scale mark arranged on the pipe wall of the sealing pipe 29, and the ruler body 1 is provided with an observation window 4 at the position opposite to the deviation reading structure 3 and the position opposite to the reflecting plate. The sealing tube 29 is made of organic glass.

The 0 scale mark is positioned in the middle of the vertical section of the sealing tube 29, and positive and negative scale marks are respectively positioned at two ends of the 0 scale mark.

The specific use method comprises the following steps:

when vertical measurement is carried out, the ruler body 1 is attached to the measured side of a measured object in operation, and when the observation point (or pointer) of the static suspension wire 21 is superposed with the central axis of the dial, the side of the measured object can be judged to be vertical or horizontal; the blade 1 is sized wide in one embodiment of the application: 80 mm; thickness: 25 mm; length: 200 mm to 2000 mm (600 mm, 800 mm and 1000 mm are common); because the fixed point is in one end of blade 1, the observation point is at the blade other end, so blade 1 length is longer in the use, the precision is higher, need to select the length chi according to the measured object as far as possible and guarantee the accuracy (current spirit level or digital display chi measure 1 long error and be 3 millimeters in general when the in-service use, 2 meters measured object error is about 6 millimeters too general, mainly because the horizontal bead observes not meticulously (whether the water bead has fine motion naked eye to judge), so the longer error of level chi measurement is just bigger, just contrary with this chi nature).

When the horizontal measurement is carried out, the swing rod horizontal detection ruler is similar to a scale beam, and when the balance is static, the horizontal detection capability is obtained by utilizing the principle that the relative position of a pointer is fixed and adding the same accessories and principles as the swing rod vertical detection ruler.

It should be noted that "inward" is a direction toward the center of the accommodating space, and "outward" is a direction away from the center of the accommodating space.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship indicated based on the orientation or positional relationship shown in fig. 1, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A high-precision measuring scale is characterized by comprising a hollow scale body, a reference piece and a deviation reading structure, wherein the reference piece is movably arranged in the scale body; the reference piece is always kept parallel to a horizontal plane or a vertical plane; when one side surface of the ruler body is attached to the surface to be measured, the reference piece is overlapped with any reading of the deviation reading structure.

2. A high precision measuring tape according to claim 1, wherein the tape body is a vertical measuring tape body, one end of the reference member is hinged on the top of the tape body, and the other end is freely suspended in the tape body and kept parallel to the vertical plane by gravity; or the ruler body is a horizontal detection ruler body, and the reference piece is kept parallel to the horizontal plane through gravity balance.

3. The high-precision measuring scale according to claim 2, wherein when the scale body is vertically detected, the reference member comprises a suspension line and a pendant, the suspension line is fixed on the top of the scale body, the pendant is placed on the bottom of the scale body, the deviation reading structure is a scale plate, the 0 scale line on the scale plate is positioned in the middle, and a viewing window is arranged on the scale body corresponding to the position of the deviation reading structure.

4. The high-precision measuring scale according to claim 2, wherein when the scale body is vertically detected, the reference part comprises a swinging column and a vertical pointer, the swinging column is rotatably arranged at the top of the scale body through a vertical bearing, the vertical pointer is arranged at the tail end of the swinging column and is overlapped with any reading of the deviation reading structure, the deviation reading structure is a scale plate, the 0 scale mark on the scale plate is positioned in the middle, and a viewing window is arranged on the scale body corresponding to the position of the deviation reading structure.

5. The high-precision measuring tape according to claim 2, wherein when the measuring tape is a level measuring tape, the reference member comprises a swing link, a counterweight structure and a horizontal pointer, the swing link is rotatably arranged in the measuring tape through a horizontal bearing, and a lever structure is formed by taking the horizontal bearing as a fulcrum; the horizontal pointer and the counterweight structure are respectively arranged at two ends of the swing rod, the horizontal pointer is coincided with any reading of the deviation reading structure, the deviation reading structure is a scale plate, a 0 scale mark on the scale plate is positioned in the middle, and an observation window is arranged on the ruler body corresponding to the deviation reading structure.

6. The high-precision measuring tape according to claim 2, wherein when the tape body is detected horizontally, the reference member comprises a sealing tube shaped like a Chinese character 'hui', filling liquid arranged in the sealing tube and a float arranged on the liquid level, inclined light reflecting plates are respectively arranged at the two sides of the sealing tube in the tape body, the deviation reading structure is a scale mark arranged on the tube wall of the sealing tube, and observation windows are arranged on the tape body opposite to the deviation reading structure and opposite to the light reflecting plates.

7. A high-precision measuring tape according to claim 3, 4 or 5, wherein the tape body is further provided with a first fine-tuning structure connected with the deviation reading structure, and the position of the deviation reading structure in the tape body can be adjusted through the first fine-tuning structure.

8. The high-precision measuring tape according to claim 5, wherein the swing link is further provided with a second fine tuning structure, and the position of the center of gravity of the swing link is adjusted through the second fine tuning structure, so that the swing link on both sides of the horizontal bearing is balanced.

9. A high accuracy measuring tape according to claim 3, 4 or 5 further comprising a locking structure provided on the tape body to lock or unlock the reference member.

10. A high precision measuring tape according to claim 1, wherein a backlight is provided in the tape body near the deviation reading structure for easy viewing of the reading.