阅读说明：本技术 一种多尺度试件坐标式定位装置及定位方法 (Coordinate type positioning device and method for multi-scale test piece ) 是由 曾岚 吴礼旗 袁鸿 范军委 黄世清 莫子永 陆华强 徐昕 李国铿 凌雪仪 于 2021-02-08 设计创作，主要内容包括：一种多尺度试件坐标式定位装置,包括定位组件；定位组件包括刻度尺架、滑块、伸缩管、一字线激光器,刻度尺架带有刻度,滑块与刻度尺架滑动连接,滑块的滑动方向平行于刻度的延伸方向,伸缩管的一端通过第一铰接点与滑块铰接,伸缩管的另一端通过第二铰接点与一字线激光器铰接,第一铰接点的轴线和第二铰接点的轴线均平行于滑块的滑动方向。还涉及一种多尺度试件坐标式定位方法,采用上述多尺度试件坐标式定位装置,通过一字线激光器发射的激光线进行试件的定位,高效实现工作平面任一点高精度定位功能,适用性广,操作简单,用材广泛,成本低廉,而且具有可拆卸,移动携带便捷,属于建筑结构测试领域。(A multi-scale test piece coordinate type positioning device comprises a positioning component; the positioning assembly comprises a scale frame, a sliding block, an extension tube and a word line laser, the scale frame is provided with scales, the sliding block is connected with the scale frame in a sliding mode, the sliding direction of the sliding block is parallel to the extending direction of the scales, one end of the extension tube is hinged to the sliding block through a first hinge point, the other end of the extension tube is hinged to the word line laser through a second hinge point, and the axis of the first hinge point and the axis of the second hinge point are both parallel to the sliding direction of the sliding block. The multi-scale test piece coordinate type positioning device is adopted, the laser line emitted by the line laser is used for positioning the test piece, the function of high-precision positioning of any point of the working plane is efficiently realized, the applicability is wide, the operation is simple, the material consumption is wide, the cost is low, the device is detachable, the moving and the carrying are convenient, and the device belongs to the field of building structure testing.)

1. The utility model provides a multiscale test piece coordinate formula positioner which characterized in that: comprises a positioning component; the positioning assembly comprises a scale frame, a sliding block, an extension tube and a word line laser, the scale frame is provided with scales, the sliding block is connected with the scale frame in a sliding mode, the sliding direction of the sliding block is parallel to the extending direction of the scales, one end of the extension tube is hinged to the sliding block through a first hinge point, the other end of the extension tube is hinged to the word line laser through a second hinge point, and the axis of the first hinge point and the axis of the second hinge point are both parallel to the sliding direction of the sliding block.

2. A multi-scale specimen coordinate positioning apparatus according to claim 1, characterized in that: the positioning assembly further comprises a magnetic base, and the magnetic base is fixedly connected with the scale frame.

3. A multi-scale specimen coordinate positioning apparatus according to claim 1, characterized in that: the scale frame is telescopic structure, and the scale frame includes the chi cover, and the quantity of chi cover is a plurality of, and a plurality of chi covers cup joint in proper order.

4. A multi-scale specimen coordinate positioning apparatus according to claim 1, characterized in that: a sliding groove is formed in the scale frame, and the sliding block is slidably embedded into the sliding groove;

the section of the sliding chute is in an inverted T shape, and the section of the sliding block is in an I shape;

the spout includes the cross slot and indulges the groove, and the cross slot is in the below of indulging the groove and with indulging the groove intercommunication, and the slider includes roof, backup pad and bottom plate, and the backup pad is connected between roof and bottom plate, and in the bottom plate embedding cross slot, the backup pad embedding indulges the inslot.

5. A multi-scale specimen coordinate positioning apparatus according to claim 4, characterized in that: a knob is arranged on the sliding block and is rotationally connected with the sliding block, and an inserting piece is fixedly connected to the lower end of the knob and is made of elastic material;

the sliding block is provided with a mounting hole, the mounting hole penetrates through the top plate and extends into the supporting plate, the mounting hole is provided with a side opening, the side opening is positioned on the side surface of the supporting plate, and the side opening faces towards the inner side wall of the longitudinal groove;

the inserting sheet is embedded into the mounting hole and has a locking state and an opening state, the inserting sheet is perpendicular to the support plate in the locking state, the side edge of the inserting sheet extends out of the side opening and abuts against the inner side wall of the longitudinal groove, and the inserting sheet is parallel to the support plate in the opening state and is not in contact with the inner side wall of the longitudinal groove; the insert is switched between the locked state and the unlocked state by rotating 90 degrees.

6. A multi-scale specimen coordinate positioning apparatus according to claim 1, characterized in that: the telescopic pipe comprises a plurality of hollow steel pipes, and the hollow steel pipes are sequentially sleeved.

7. A multi-scale specimen coordinate positioning apparatus according to claim 1, characterized in that: the number of positioning components is two.

8. A multi-scale specimen coordinate positioning apparatus according to claim 2, characterized in that: a locating component comprises two magnetic bases which are fixedly connected with the scale frame.

9. A multi-scale specimen coordinate positioning apparatus according to claim 5, characterized in that: the elastic material is plastic.

10. A coordinate positioning method of a multi-scale test piece, which adopts the coordinate positioning device of the multi-scale test piece as claimed in any one of claims 1 to 9, and is characterized in that: the test piece positioning method for the testing machine comprises the following steps:

s1, mounting two positioning assemblies on a bearing platform of a testing machine, and vertically placing two scale racks;

s2, starting the two linear lasers so that the two linear lasers emit two laser lines;

s3, marking an original point on the bearing platform, wherein the original point is the centroid of the bearing platform;

and S4, moving the sliding block on the scale frame until the intersection point of the two laser lines on the bearing platform reaches a target position, wherein the distance between the target position and the original point accords with the eccentric amount required by the test, and then moving the test piece on the bearing platform until the centroid of the top of the test piece is superposed with the intersection point of the two laser lines.

Technical Field

The invention relates to the field of building structure testing, in particular to a coordinate type positioning device and a coordinate type positioning method for a multi-scale test piece.

Background

In recent years, building structures have been improved in performance with the development of new building materials and structural members, but a large number of tests for materials and structural members have been required before the new building techniques are put to practical use in engineering. According to different test piece sizes, test targets and requirements, different test equipment is adopted to carry out tests under different working conditions such as pulling, pressing, bending, shearing, twisting and the like in the test. And to most testing machines, do not be equipped with accurate positioner in the machine, often adopt the range estimation location or manual measurement's mode to fix a position the test piece in the operation process, fix a position inaccurately, cause later stage experimental error great, the operation of fixing a position simultaneously is also inconvenient to be adjusted, is difficult to be applicable to the sample of multiple size and shape, more difficult to realize the high-efficient location at any point in the test piece loading working face within range.

Disclosure of Invention

Aiming at the technical problems in the prior art, the invention aims to: the multi-scale test piece coordinate type positioning device and the positioning method can accurately position a test piece.

In order to achieve the purpose, the invention adopts the following technical scheme:

a multi-scale test piece coordinate type positioning device comprises a positioning component; the positioning assembly comprises a scale frame, a sliding block, an extension tube and a word line laser, the scale frame is provided with scales, the sliding block is connected with the scale frame in a sliding mode, the sliding direction of the sliding block is parallel to the extending direction of the scales, one end of the extension tube is hinged to the sliding block through a first hinge point, the other end of the extension tube is hinged to the word line laser through a second hinge point, and the axis of the first hinge point and the axis of the second hinge point are both parallel to the sliding direction of the sliding block. After adopting this kind of structure, the position of laser line can be confirmed through the scale to the laser line of a word line laser emission, and can remove a word line laser on the scale frame through the slider, through the height and the angle of the adjustable word line laser of flexible pipe and two pin joints, is applicable to the test piece location of not unidimensional.

Preferably, the positioning assembly further comprises a magnetic base, and the magnetic base is fixedly connected with the scale frame. After adopting this kind of structure, the magnetism base is controllable magnetism base, puts the scale frame to suitable position after, and the accessible magnetism base is fixed the scale frame, prevents it and slides.

Preferably, the graduated scale frame is of a telescopic structure and comprises a plurality of scale sleeves, and the scale sleeves are sequentially sleeved. After adopting this kind of structure, the scale frame can contract or expand, is applicable to the test piece location of equidimension not. The scale sleeve is provided with scales, and after the scale rack is unfolded, the scales on the scale sleeve form continuous scale marks.

Preferably, the graduated scale frame is provided with a sliding groove, and the sliding block is slidably embedded into the sliding groove; the section of the sliding chute is in an inverted T shape, and the section of the sliding block is in an I shape; the spout includes the cross slot and indulges the groove, and the cross slot is in the below of indulging the groove and with indulging the groove intercommunication, and the slider includes roof, backup pad and bottom plate, and the backup pad is connected between roof and bottom plate, and in the bottom plate embedding cross slot, the backup pad embedding indulges the inslot.

Preferably, a knob is arranged on the sliding block and is rotatably connected with the sliding block, and an inserting piece is fixedly connected to the lower end of the knob and is made of an elastic material; the sliding block is provided with a mounting hole, the mounting hole penetrates through the top plate and extends into the supporting plate, the mounting hole is provided with a side opening, the side opening is positioned on the side surface of the supporting plate, and the side opening faces towards the inner side wall of the longitudinal groove; the inserting sheet is embedded into the mounting hole and has a locking state and an opening state, the inserting sheet is perpendicular to the support plate in the locking state, the side edge of the inserting sheet extends out of the side opening and abuts against the inner side wall of the longitudinal groove, and the inserting sheet is parallel to the support plate in the opening state and is not in contact with the inner side wall of the longitudinal groove; the insert is switched between the locked state and the unlocked state by rotating 90 degrees. After adopting this kind of structure, when the inserted sheet rotated to perpendicular to backup pad, the slider was fixed through the inserted sheet with the frictional force between the vertical groove inside wall with the spout, and when the inserted sheet rotated to being on a parallel with the backup pad, the inserted sheet did not contact with vertical groove, and the slider can freely slide.

Preferably, the telescopic pipe comprises a plurality of hollow steel pipes, and the hollow steel pipes are sequentially sleeved.

Preferably, the number of positioning members is two. After the structure is adopted, the two scale frames are vertically arranged to form a plane rectangular coordinate, and accurate positioning can be carried out in the coordinate.

Preferably, one positioning assembly comprises two magnetic bases, and the two magnetic bases are fixedly connected with the scale frame. After the structure is adopted, a certain distance is reserved between the two magnetic bases, and the two points are fixed more stably.

Preferably, the resilient material is plastic. After adopting this kind of structure, elastic material's elasticity is better.

A multi-scale test piece coordinate type positioning method is used for test piece positioning of a testing machine and comprises the following steps:

s1, mounting two positioning assemblies on a bearing platform of a testing machine, and vertically placing two scale racks;

s2, starting the two linear lasers so that the two linear lasers emit two laser lines;

s3, marking an original point on the bearing platform, wherein the original point is the centroid of the bearing platform;

and S4, moving the sliding block on the scale frame until the intersection point of the two laser lines on the bearing platform reaches a target position, wherein the distance between the target position and the original point accords with the eccentric amount required by the test, and then moving the test piece on the bearing platform until the centroid of the top of the test piece is superposed with the intersection point of the two laser lines.

In summary, the present invention has the following advantages:

the invention adopts the principle that two mutually perpendicular straight lines are intersected to carry out the coordinate positioning work of the test piece, and each linear laser emits a laser line to carry out the coordinate positioning work. The problem that a laboratory lacks a quick positioning method for coordinates of a large-scale test piece in the past is solved, and the device is simple in structure, high in positioning precision, space-saving, simple to operate, wide in applicability, convenient to detach and install, convenient to move and carry and beneficial to achieving efficient positioning of test pieces of various sizes at any point in the range of a test piece loading working surface.

Drawings

Fig. 1 is a perspective view of a coordinate positioning apparatus for a multi-scale test piece.

FIG. 2 is a schematic view of the structure of the slider, the telescopic tube and the laser.

Fig. 3 is a top view of the slider.

Fig. 4 is a cross-sectional view of fig. 3.

Fig. 5 is a schematic structural view of the knob.

Fig. 6 is a schematic structural diagram of the insert in a locked state.

Fig. 7 is a schematic structural view of the insert sheet in an open state.

Fig. 8 is a schematic diagram of a coordinate positioning apparatus for a multi-scale specimen in use.

Wherein, 1 is a word line laser instrument, 2 is flexible steel pipe, 3 is the slider, 4 are scale frame, 5 magnetism bases, 6 are the spout, 7 are the knob, 8 are first bolt, 9 are the second bolt, 10 are the laser line, 11 are the mounting hole, 12 are the inserted sheet, 13 are the roof, 14 are the backup pad, 15 are the bottom plate.

Detailed Description

The present invention will be described in further detail with reference to specific embodiments.

Example one

As shown in fig. 1 to 4, a coordinate type positioning device for a multi-scale test piece comprises a positioning assembly; the positioning assembly comprises a scale frame, a sliding block, an extension tube and a word line laser, the scale frame is provided with scales, the sliding block is connected with the scale frame in a sliding mode, the sliding direction of the sliding block is parallel to the extending direction of the scales, one end of the extension tube is hinged to the sliding block through a first hinge point, the other end of the extension tube is hinged to the word line laser through a second hinge point, and the axis of the first hinge point and the axis of the second hinge point are both parallel to the sliding direction of the sliding block.

The positioning assembly further comprises a magnetic base, and the magnetic base is fixedly connected with the scale frame.

The scale frame is telescopic structure, and the scale frame includes the chi cover, and the quantity of chi cover is a plurality of, and a plurality of chi covers cup joint in proper order.

A sliding groove is formed in the scale frame, and the sliding block is slidably embedded into the sliding groove; the section of the sliding chute is in an inverted T shape, and the section of the sliding block is in an I shape; the spout includes the cross slot and indulges the groove, and the cross slot is in the below of indulging the groove and with indulging the groove intercommunication, and the slider includes roof, backup pad and bottom plate, and the backup pad is connected between roof and bottom plate, and in the bottom plate embedding cross slot, the backup pad embedding indulges the inslot.

A knob is arranged on the sliding block and is rotationally connected with the sliding block, and an inserting piece is fixedly connected to the lower end of the knob and is made of elastic material; the sliding block is provided with a mounting hole, the mounting hole penetrates through the top plate and extends into the supporting plate, the mounting hole is provided with a side opening, the side opening is positioned on the side surface of the supporting plate, and the side opening faces towards the inner side wall of the longitudinal groove; the inserting sheet is embedded into the mounting hole and has a locking state and an opening state, the inserting sheet is perpendicular to the support plate in the locking state, the side edge of the inserting sheet extends out of the side opening and abuts against the inner side wall of the longitudinal groove, and the inserting sheet is parallel to the support plate in the opening state and is not in contact with the inner side wall of the longitudinal groove; the insert is switched between the locked state and the unlocked state by rotating 90 degrees.

Under the locking state, one side of inserted sheet supports the inside wall of vertical groove, and the opposite side supports the inside wall of mounting hole to the inserted sheet is through frictional force card scale frame and slider.

The telescopic pipe comprises a plurality of hollow steel pipes, and the hollow steel pipes are sequentially sleeved.

The number of positioning components is two.

A locating component comprises two magnetic bases which are fixedly connected with the scale frame.

The elastic material is plastic.

The scale sleeves are sequentially sleeved from the middle to two ends of the scale rack, the length of the scale sleeve in the middle is 300mm, and the maximum length of the two ends of the whole scale rack is 1200mm after the scale sleeve is unfolded. The length of the telescopic pipe can be between 300mm and 1000 mm. The length of the slider is 100 mm.

The slider is provided with a first hinged support, the linear laser is provided with a second hinged support, one end of the telescopic pipe is provided with a first connecting piece, the first connecting piece is connected with the first hinged support through a first bolt, the other end of the telescopic pipe is provided with a second connecting piece, and the second connecting piece is connected with the second hinged support through a second bolt.

A coordinate type positioning method of a multi-scale test piece is used for positioning the test piece of a testing machine and comprises the following steps:

s1, mounting two positioning assemblies on a bearing platform of a testing machine, and vertically placing two scale racks;

s2, starting the two linear lasers so that the two linear lasers emit two laser lines;

s3, marking an original point on the bearing platform, wherein the original point is the centroid of the bearing platform;

and S4, moving the sliding block on the scale frame until the intersection point of the two laser lines on the bearing platform reaches a target position, wherein the distance between the target position and the original point accords with the eccentric amount required by the test, and then moving the test piece on the bearing platform until the centroid of the top of the test piece is superposed with the intersection point of the two laser lines.

As shown in FIG. 5, the test piece is a large cylindrical member with a height of 600mm and a diameter of 300mm, and two ink lines meeting the centroid of the top are popped up at the top of the test piece by using an ink fountain, so that the centroid of the top of the test piece is obtained.

In step S1, the two ends of the scale frame are unfolded and then mounted, the two scale frames form a semi-enclosed rectangular area on the platform, the centroid of the platform is located in the rectangular area, and after the scale frame is placed at a proper position, the magnetic base is opened to fix the scale frame on the platform.

In step S4, the length of the telescopic tube is adjusted to 500mm, and the angles of the telescopic tube and the in-line laser are adjusted until the two laser lines pass through the scales on the scale rack and can pass through the centroid of the bearing platform and the top of the test piece, the eccentricity required by the test in this embodiment is 0, and therefore, the target position is the original position. And when the intersection point reaches the target position, the knob is rotated until the insert is vertical to the support plate, so that the slide block and the scale frame are locked.

When the test piece is positioned, the bearing platform is pushed out of the testing machine, and after the step S4 is completed, the bearing platform is pushed back into the testing machine, and the scale frame is detached from the bearing platform.

The tester used is an electro-hydraulic servo pressure tester.

Example two

In this embodiment, in step S4, the eccentricity required for the test is 50mm, and in step S4, the slider is moved first until the intersection of the laser lines coincides with the origin, so that the position of the origin is obtained through the scale through which the laser lines pass, and then the slider is moved 50mm on the scale holder, at this time, the distance between the intersection of the two laser lines and the origin is 50mm, that is, the intersection reaches the target position.

The parts not mentioned in this embodiment are the same as those in the first embodiment.

The above embodiments are preferred embodiments of the present invention, but the present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents thereof, and all such changes, modifications, substitutions, combinations, and simplifications are intended to be included in the scope of the present invention.