阅读说明：本技术 一种量具 (Measuring tool ) 是由 王耀春 郭旗龙 蔡洋涛 方骅 张鸿飞 田玉龙 于 2020-11-12 设计创作，主要内容包括：本发明公开了一种量具,包括轴向滑动连接的第一杆和第二杆；所述第一杆和所述第二杆的连接处设有用以标定所述量具的总长的刻度线；所述第一杆和所述第二杆二者均在轴向上设有平直且相互衔接的基准面；所述第一杆和所述第二杆二者中至少一者的端部连接有定位块；所述定位块具有用以贴紧待测工件的顶角的定位面。该量具可以满足司机室面罩的门框对角差测量、司机室面罩的窗台板的高度测量、门框的顶角的定性测量以及司机室面罩的窗台板的平面度定性检测。因此,该量具集多种测量功能于一体,方便操作人员使用单一工具连续完成多项检测作业,可提升检测效率。(The invention discloses a measuring tool, which comprises a first rod and a second rod which are axially connected in a sliding manner; the joint of the first rod and the second rod is provided with a scale mark for calibrating the total length of the measuring tool; the first rod and the second rod are both provided with straight and mutually-jointed reference surfaces in the axial direction; a positioning block is connected to the end part of at least one of the first rod and the second rod; the positioning block is provided with a positioning surface used for tightly attaching to the vertex angle of the workpiece to be measured. The measuring tool can meet the requirements of measuring the diagonal angle difference of the door frame of the cab mask, measuring the height of the window board of the cab mask, qualitatively measuring the vertex angle of the door frame and qualitatively detecting the flatness of the window board of the cab mask. Therefore, the measuring tool integrates multiple measuring functions, is convenient for an operator to use a single tool to continuously complete multiple detection operations, and can improve the detection efficiency.)

1. A gauge, characterized by comprising a first rod (1) and a second rod (2) axially slidably connected; the joint of the first rod (1) and the second rod (2) is provided with a scale mark for calibrating the total length of the measuring tool; the first rod (1) and the second rod (2) are both provided with straight reference surfaces which are mutually jointed in the axial direction; a positioning block (3) is connected to the end of at least one of the first rod (1) and the second rod (2); the positioning block (3) is provided with a positioning surface used for tightly adhering to the vertex angle of the workpiece to be measured.

2. A gauge according to claim 1, wherein the locating block (3) is connected to the end of the first rod (1) and a roller (4) is connected to the end of the second rod (2).

3. A gauge according to claim 1, characterized in that the first rod (1) or the second rod (2) is fixedly connected to the positioning block (3) at an angle oblique to the positioning plane.

4. A gauge according to claim 3, wherein the positioning block (3) is hinged to the first rod (1) or the second rod (2).

5. The measuring gauge according to claim 4, characterized in that the positioning block (3) is hinged to the first rod (1) with a locking member for locking therebetween; the positioning block (3) is provided with a counterweight surface for realizing the vertical upward fixation of the first rod (1) and the second rod (2).

6. The gauge according to claim 1, wherein the locating surface comprises two adjacent and perpendicular planes.

7. The gauge according to claim 6, wherein an edge rounding is provided at the intersection of the two planes; the curvature radius of the edge rounding is larger than that of the vertex angle rounding of the workpiece to be measured.

8. A gauge according to claim 1, wherein the interior of one of the first (1) and second (2) rods is provided with a vial extending in the rod length direction.

9. A gauge according to any of claims 1-8, wherein at least one of the first rod (1) and the second rod (2) is tubular, and the first rod (1) and the second rod (2) are nested within each other.

10. The gauge according to any of claims 1 to 8, characterized in that the first rod (1) is provided with a sliding groove in axial direction for the second rod (2) to be inserted and slid.

Technical Field

The invention relates to the field of measurement, in particular to a measuring tool.

Background

The cab mask of the subway vehicle is easily deformed due to the influence of the materials, the problem of deformation can cause difficulty in matching of all parts in the cab, the final quality of a product is not guaranteed, and the influence on subsequent installation is great.

The inspection content of the cab mask comprises dimensional deviations such as door frame deformation, window board height deviation, window board flatness deviation and the like. Wherein, the door frame deformation degree is usually calibrated by the difference of the diagonal angle difference of the door frame. The mask has a large structure and is inconvenient to measure, so that certain difficulty is brought to warehousing inspection. At present, a plurality of measuring tools are required to be matched with each other by a plurality of measuring tools, for example, a diagonal ruler is used for measuring the diagonal difference of a door frame, a laser range finder or a measuring tape is used for measuring the height of a window board, a horizontal ruler is used for measuring the flatness of the window board, and the measured data of three different measuring tools are combined to judge whether a product to be tested is qualified. In addition, two persons are needed to cooperate to complete the measurement, which is time-consuming and labor-consuming.

Therefore, the existing warehouse-in inspection method of the cab mask has the defects of multiple tools, large occupied space, inconvenience in carrying and low efficiency.

Disclosure of Invention

The invention aims to provide a measuring tool which can simplify the inspection work of a cab mask, improve the detection efficiency and save the storage space.

In order to achieve the above object, the present invention provides a measuring tool, comprising a first rod and a second rod axially slidably connected; the joint of the first rod and the second rod is provided with a scale mark for calibrating the total length of the measuring tool; the first rod and the second rod are both provided with straight and mutually-jointed reference surfaces in the axial direction; a positioning block is connected to the end part of at least one of the first rod and the second rod; the positioning block is provided with a positioning surface used for tightly attaching to the vertex angle of the workpiece to be measured.

Preferably, the end of the first rod is connected with the positioning block, and the end of the second rod is connected with the roller.

Preferably, the first rod or the second rod is fixedly connected to the positioning block at an angle oblique to the positioning plane.

Preferably, the positioning block is hinged to the first rod or the second rod.

Preferably, the positioning block is hinged with the first rod, and a locking piece for realizing locking is arranged between the positioning block and the first rod; the positioning block is provided with a counterweight surface used for realizing the vertical upward fixation of the first rod and the second rod.

Preferably, the locating surface comprises two adjacent and perpendicular planes.

Preferably, an edge rounding is arranged at the intersection line of the two planes; the curvature radius of the edge rounding is larger than that of the vertex angle rounding of the workpiece to be measured.

Preferably, one of the first and second rods is internally provided with a vial extending in the rod length direction.

Preferably, at least one of the first rod and the second rod is tubular, and the first rod and the second rod are nested with each other.

Preferably, the first rod is provided with a sliding groove along the axial direction for the second rod to be embedded and slide.

Against the above background, the present invention provides a gauge including a first rod and a second rod, the axial direction of the first rod and the axial direction of the second rod being the same, and both being slidably connected in the axial direction.

In the measuring tool, a scale mark for calibrating the total length of the measuring tool is arranged at the joint of the first rod and the second rod; the first rod and the second rod are both provided with straight reference surfaces which are mutually connected in the axial direction; the end of at least one of the first rod and the second rod is connected with a positioning block.

Because the first rod and the second rod are provided with scale marks for calibrating the total length of the measuring tool at the joint, the measuring tool can realize the length measurement through the first rod and the second rod, and the function can be used for measuring the diagonal difference of the cab mask at the door frame and the height of the cab mask at the window board. Because the end of the first rod and/or the second rod is connected with the positioning block, and the positioning block is provided with a positioning surface used for tightly attaching to the vertex angle of the door frame of a workpiece to be tested, such as a cab mask, whether the machining angle of the vertex angle meets the requirement of a design angle or not can be qualitatively checked depending on the specific angle of the positioning surface. Because first pole and second pole both are equipped with the plane and the reference surface that links up each other, this reference surface plane degree is high, can be used to the plane degree that the window board of qualitative detection driver's cab face guard whether satisfies the design demand.

In conclusion, the measuring tool integrates multiple functions, and can meet the requirements of various inspection works of the cab mask. The measuring tool is convenient for a single person to use, is favorable for saving the storage space of measuring instruments, and is convenient to carry and use. The invention has the problems of large measuring tool quantity and inconvenient operation.

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 embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

FIG. 1 is a schematic view of a gauge according to an embodiment of the present invention in a compressed state;

FIG. 2 is a schematic structural diagram of a gauge according to an embodiment of the present invention in a stretched state;

fig. 3 is an operation schematic diagram of the measuring tool according to the embodiment of the present invention, when the measuring tool is used for measuring the deformation degree of the door frame of the cab mask;

FIG. 4 is a schematic view of the measuring tool of the present invention applied to measure the height of the window sill of the cab;

FIG. 5 is a first operational view of a gauge according to an embodiment of the present invention applied to measure the flatness of a window sill of a cab;

fig. 6 is a second operation diagram of the gauge according to the embodiment of the present invention when the gauge is applied to measure the flatness of the window board of the cab.

The device comprises a door frame 01, a window board 02, a datum plane 03, a first rod 1, a second rod 2, a positioning block 3 and a roller 4.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In order that those skilled in the art will better understand the disclosure, the invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

Referring to fig. 1 to 6, fig. 1 is a schematic structural diagram of a gauge in a compressed state according to an embodiment of the present invention; FIG. 2 is a schematic structural diagram of a gauge according to an embodiment of the present invention in a stretched state; fig. 3 is an operation schematic diagram of the measuring tool according to the embodiment of the present invention, when the measuring tool is used for measuring the deformation degree of the door frame of the cab mask; FIG. 4 is a schematic view of the measuring tool of the present invention applied to measure the height of the window sill of the cab; FIG. 5 is a schematic view of the gauge of the present invention applied to measure the flatness of the window sill of the cab; fig. 6 is a second operation diagram of the gauge according to the embodiment of the present invention when the gauge is applied to measure the flatness of the window board of the cab.

The invention provides a measuring tool, which comprises a first rod 1 and a second rod 2; the first rod 1 and the second rod 2 both extend in the same direction and are slidably connected, that is, the axial direction of the first rod 1 and the axial direction of the second rod 2 are the same, and the first rod 1 and the second rod 2 slide in the axial direction with respect to each other, achieving shortening and lengthening of the total length of the first rod 1 and the second rod 2.

In the measuring tool, a scale mark for calibrating the total length of the measuring tool is arranged at the joint of the first rod 1 and the second rod 2, namely, when the length of an object to be measured is calibrated by using the outer end part of the first rod 1 and the outer end part of the second rod 2, the total length of the measuring tool can be obtained through the scale mark between the inner end part of the first rod 1 and the inner end part of the second rod 2. The total length of the measuring tool includes not only the sum of the lengths of the first rod 1 and the second rod 2, but also the sum of the sizes of other structures along the length direction of the first rod 1 when the measuring tool is connected with the other structures at the outer end part of the first rod 1 and the outer end part of the second rod 2. When the measuring tool is stretched, the outer end of the first rod 1 and the outer end of the second rod 2 are away from each other, and the numerical value obtained by the scale lines is large, and when the measuring tool is compressed, the outer end of the first rod 1 and the outer end of the second rod 2 are close to each other, and the numerical value obtained by the scale lines is small.

Based on the structural connection, the measuring tool can be applied to the deformation degree measurement of the cab mask at the doorframe 01. When measuring, firstly, the outer end part of the first rod 1 and the outer end part of the second rod 2 are respectively abutted against a pair of opposite corners of the doorframe 01, and the length of the diagonal line between the pair of opposite corners is obtained by reading the numerical value at the scale mark. Then, the outer end of the first rod 1 and the outer end of the second rod 2 are respectively abutted against the other pair of opposite corners of the door frame 01, and the diagonal length between the pair of opposite corners is obtained by reading the numerical value of the scale mark. If the door frame 01 of the cab mask is not deformed, the lengths of the diagonals measured in the two times are equal, in other words, whether the deformation degree of the door frame 01 of the cab mask is in a reasonable range or not and whether the cab mask is a qualified product or not can be judged according to the difference of the lengths of the diagonals measured in the two times.

In the measuring tool, the end part of at least one of the first rod 1 and the second rod 2 is connected with the positioning block 3, and the positioning block 3 is provided with a positioning surface for tightly attaching to the vertex angle of the workpiece to be measured. This means that when the diagonal angle difference of the door frame 01 of the cab mask is measured, the shape of the top angle of the door frame 01 can be calibrated through the positioning surface, and whether the top angle of the door frame 01 has a qualified angle or not is judged. For example, the positioning surface comprises two adjacent and perpendicular planes, and in the cab mask serving as the workpiece to be measured, the design size of the top angle of the door frame 01 is a right angle, so that an operator can push the positioning surface into the top angle of the door frame 01, and judge whether the top angle of the door frame 01 is qualified by observing whether the top angle of the door frame 01 can be completely overlapped on the positioning surface.

Based on the structural connection, the measuring tool can also be applied to the height measurement of the cab mask at the window board 02. When measuring, the first bar 1 and the second bar 2 are placed at a perpendicular angle with respect to the reference plane 03, for example, the ground, and the outer end portion of either one of the first bar 1 and the second bar 2 is pressed against the ground, and the outer end portion of the other of the first bar 1 and the second bar 2 is brought into contact with the window board 02 of the cab mask by stretching or compressing the first bar 1 and the second bar 2. Usually, one of the first rod 1 and the second rod 2 connected with the positioning block 3 is pressed against the ground, and the angle requirement of the first rod 1 and the second rod 2 can be met through the positioning connection of the positioning block 3 and the ground, so that the first rod 1 and the second rod 2 can be ensured to accurately calibrate the height of the cab mask at the window board 02. In combination with the specific structural size of the positioning block 3, when the positioning block 3 has proper mass and volume, the positioning block 3 independently realizes the fixation of the first rod 1 and the second rod 2 relative to the ground, so that an operator does not need to support the first rod 1 and the second rod 2, and the measuring operation of the measuring tool on the height of the window board 02 is simplified.

In this gauge, both the first rod 1 and the second rod 2 are provided with a flat reference surface. The reference surface of the first rod 1 extends in the axial direction of the first rod 1, the reference surface of the second rod 2 extends in the axial direction of the second rod 2, and the reference surfaces of the first rod 1 and the second rod 2 are engaged with each other.

Based on the structural connection, the measuring tool can be applied to the flatness measurement of the window board 02 of the cab mask, and the flatness of the window board 02 is compared with the reference surface with higher flatness, namely, high-precision parts are compared with low-precision parts. During measurement, the plane to be measured of the window board 02 is attached to the reference surfaces of the first rod 1 and the second rod 2, and referring to fig. 5 and 6, when the plane to be measured of the window board 02 is concave or convex, a gap exists between the plane to be measured of the window board 02 and the reference surfaces. Therefore, an operator can look at the light source through the plane to be measured of the window board 02 and the measuring tool, and if a gap exists between the plane to be measured of the window board 02 and the reference surface, the operator can receive the light emitted by the light source from the gap, otherwise, the operator cannot receive the light emitted by the light source from the gap between the plane to be measured of the window board 02 and the reference surface.

In conclusion, the measuring tool can meet the requirement of measuring the diagonal difference of the door frame 01 of the cab mask through the first rod 1, the second rod 2 and the connection relation of the first rod and the second rod, is used for judging whether the deformation of the door frame 01 is in a qualified range, can also meet the requirement of measuring the height of the window board 02 of the cab mask, and is used for judging whether the actual machining size of the window board 02 meets the design requirement; the measuring tool is connected with the first rod 1 and the second rod 2 through the positioning block 3, so that when the diagonal angle difference of the door frame 01 of the cab mask is measured, whether the actual machining size of the top angle of the door frame 01 meets the design requirement or not can be simultaneously measured, and when the height of the cab mask is measured, the measuring precision is improved, and the measuring operation is simplified; the measuring tool is connected with the reference surface of the second rod 2 through the position of the reference surface of the first rod 1, so that the flatness measurement of the window board 02 of the cab mask can be met, and whether the actual machining size of the window board 02 meets the design requirement or not can be judged.

Certainly, in the actual operation process, according to different sequences of different measurement operations, when the door frame 01 diagonal difference of a certain cab mask obtained in the current measurement operation does not meet the product requirement, the subsequent other measurement operations are not needed.

Therefore, the measuring tool can integrate multiple measuring functions, is convenient for an operator to continuously complete multiple detection operations by using a single tool, and can improve the detection efficiency.

The measuring tool provided by the invention is further described in the following with reference to the accompanying drawings and embodiments.

On the basis of the above embodiment, the measuring tool may be provided with a positioning block 3 at the end of the first rod 1 and a roller 4 at the end of the second rod 2, in short, one of the two ends of the measuring tool is provided with a positioning frame for abutting into the top corner of the door frame 01 during the operation of measuring the diagonal difference of the door frame 01 and for adhering to the ground during the operation of measuring the height of the window sill plate 02; the other end is equipped with gyro wheel 4 for support into the offside apex angle of door frame 01 in door frame 01 diagonal difference measurement operation, reduce the structural damage that causes door frame 01, be used for laminating in the roll of window board 02 in window board 02 height measurement operation, in order to accurately acquire the height of window board 02.

Considering that in the diagonal difference measurement operation of the door frame 01, the positioning surface of the positioning block 3 needs to be attached to the vertex angle of the door frame 01, and the first rod 1 and the second rod 2 need to extend along a pair of vertex angles of the door frame 01 which are distributed oppositely, taking the first rod 1 connected with the positioning block 3 as an example, in the measuring tool, the first rod 1 is fixedly connected to the positioning block 3 at an angle inclined to the positioning surface, and when the positioning block 3 is ensured to be attached to the vertex angle of the door frame 01, the first rod 1 and the second rod 2 can be stretched and compressed on a connecting line of the pair of vertex angles of the door frame 01 which are distributed oppositely.

Of course, the above-described structure means that the gauge is applicable only to a plurality of door frames 01 having the same diagonal inclination angle. In order to meet the requirement of measuring the door frames 01 with different diagonal inclination angles, the positioning block 3 is connected to the first rod 1 as an example, and in the measuring tool, the first rod 1 is hinged with the positioning block 3. When the measuring tool is used, the positioning block 3 is firstly abutted into the top angle of the door frame 01, and whether the top angle of the door frame 01 meets the design requirement is judged. When the apex angle of door frame 01 satisfied the design demand, rotatory first pole 1 and second pole 2 again makes first pole 1 and second pole 2 extend along the diagonal of door frame 01, through tensile or compression first pole 1 and second pole 2 for the tip of second pole 2 supports in another apex angle of door frame 01, in order to obtain the length of aforementioned diagonal.

In this measuring tool, when locating piece 3 and first pole 1 are articulated, for the convenience of operating personnel realize the height measurement operation of window board 02, locating piece 3 and first pole 1 are equipped with the retaining member that is used for realizing locking in articulated department. The retaining member can be in the state of unclamping when the operation is measured to the 01 diagonal of door frame, makes things convenient for operating personnel freely to adjust the contained angle of setting element and first pole 1 according to the door frame 01 of different grade type. The locking piece is in a locking state when the windowsill 02 is in height measurement operation, and is used for locking the first rod 1 and the positioning block 3 when the first rod 1 is perpendicular to the positioning surface of the positioning block 3, so that an operator can conveniently rely on the positioning block 3 to vertically position the first rod 1 and the second rod 2 relative to the ground.

Further, in the above measuring tool, the positioning block 3 has at least one weight surface for vertically fixing the first rod 1 and the second rod 2. The counterweight face can independently satisfy first pole 1 and second pole 2 fixed in the above ground, has removed operating personnel from to first pole 1 and second pole 2's support, makes things convenient for operating personnel to measure the height of window board 02.

A specific example is provided below for the shape of the positioning block 3, and reference may be made to fig. 1.

In fig. 1, the positioning block 3 has a positioning surface at its periphery, and the positioning surface includes two adjacent and perpendicular planes for respectively fitting the adjacent planes of the top corners of the door frame 01. Considering the actual structure of the top angle of the door frame 01, two planes of the positioning surface are also provided with edge rounding at the intersection line, and the curvature radius of the edge rounding is larger than that of the top angle rounding of the top angle of the door frame 01 to be measured, so as to ensure that the positioning block 3 can completely support the top angle of the door frame 01 without structural interference.

Furthermore, the gauge can also be provided with a level bubble in the first rod 1 or the second rod 2. The vial is disposed within the first rod 1 or the second rod 2 and extends in a direction parallel to the rod length direction. For example, when the level bubble is provided on the first rod 1, the level bubble extends in a direction parallel to the rod length of the first rod 1, and when the first rod 1 is horizontally placed and tilted left and right, the bubble in the level bubble moves left or right from the center of the level bubble, thereby assisting the operation of measuring the flatness of the window board 02. During the flatness measurement operation of the window board 02, based on the design structure and the design size of the cab mask, the to-be-measured surface of the window board 02 conforming to the design size is horizontally distributed relative to the ground, so when the reference surfaces of the first rod 1 and the second rod 2 are attached to the to-be-measured surface of the window board 02, if the to-be-measured surface is just equal to the design size, the air bubbles in the air level are located at the specified position of the air level, and the air level cannot move along the extension direction of the air level. If the surface to be measured is not equal to the design size but still within the qualified range, the level bubble is located in the designated area of the cavity, and the air bubble in the level bubble does not exceed the designated area when moving along the extending direction of the level bubble. On the contrary, if the surface to be measured is unqualified, the air bubbles in the level bubble move to the outside of the specified area of the level bubble.

Two specific examples are provided below for the manner of connection of the first rod 1 and the second rod 2 in the gauge.

In a first exemplary structure, at least one of the first rod 1 and the second rod 2 is tubular to be sleeved on the outer periphery of the other. Taking the first rod 1 as a tube and sleeved on the periphery of the second rod 2 as an example, in this example structure, because of the wall thickness of the first rod 1, when the flatness of the window board 02 is measured, there is actually a certain height difference between the level surface of the first rod 1 and the level surface of the second rod 2, however, based on the total length of the surface to be measured of the window board 02 and the measuring tool, the height difference has little influence on the flatness measurement operation of the surface to be measured, and therefore, the measurement operation of the measuring tool is not interfered.

In a second example structure, the first rod 1 is provided with a sliding groove along its own axial direction for the second rod 2 to be inserted and slid. Based on the arrangement of the sliding groove, the local periphery of the first rod 1 and the local periphery of the second rod 2 can be in the same plane, namely, the reference surface of the first rod 1 and the reference surface of the second rod 2 can be connected in the plane, so that the measurement operation of the flatness of the window board 02 is facilitated.

In conclusion, the measuring tool provided by the invention can be used as a special inspection tool for the mask of the cab of the subway vehicle, various inspection requirements of the mask of the cab can be met through the measuring tool, the function integration is realized, the operation by one person is convenient, and the inspection efficiency is improved.

The measuring tool provided by the invention is described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.