Laser height measuring instrument with limiting tool

Abstract

The invention discloses a laser height measuring instrument with a limiting tool, which relates to the technical field of laser measurement and comprises a placing table, a sliding column, a sliding ring, a connecting rod, a mounting plate, a display terminal and a plurality of measuring rods, the sliding column is vertically arranged on the placing table; the sliding column is sleeved with the sliding ring in a sliding mode, and a fastening bolt is arranged on the sliding ring. The connecting rod is horizontally arranged on the sliding ring; one end, far away from the sliding ring, of the connecting rod is connected with the mounting plate; the mounting plate is positioned above the placing table; a plurality of limiting openings are vertically formed in the mounting plate, and the measuring rods and the limiting openings are the same in number and are in one-to-one correspondence; the measuring rod comprises a top block and a rod body, the top block is arranged at the top end of the rod body, and the rod body penetrates through the limiting opening in a sliding mode. Scale marks are arranged on the rod body; the display terminal is installed on the sliding ring. The technical effects that the heights of different positions on the special-shaped measurement object can be measured without frequently moving the measurement part, the measurement time is shortened, and the working efficiency is improved are achieved.

Description

Technical Field

[0001] The invention relates to the technical field of laser measurement, and in particular to a laser height measuring instrument with a limit fixture. Background Art

[0002] In the context of the continuous pursuit of efficiency and accuracy in the highly sophisticated manufacturing industry and automated production lines, traditional methods and existing height measurement equipment have been unable to meet the growing production needs for the challenges of measuring the dimensions of irregularly shaped objects. In particular, when faced with irregularly shaped objects such as the complex curved surfaces of automotive molds and the fine contours of aviation parts, traditional manual measurement and single-point automated measurement methods are particularly inadequate.

[0003] In order to overcome these limitations, laser measurement technology has gradually become a research hotspot in the field of industrial measurement due to its non-contact, high-precision and fast measurement characteristics. However, even in the application of laser measurement technology, low measurement efficiency and loss of accuracy due to the complex shape of the measured object are often encountered. Although the existing laser measurement system can use the laser beam for rapid scanning, for special-shaped objects with deep concave, convex or complex curved surfaces, a single laser scanning path may not be able to fully cover all important features, and it is necessary to move the measurement component multiple times to repeat the measurement of different positions of the special-shaped object, which takes a long time. Summary of the invention

[0004] The present application provides a laser height measuring instrument with a limit position tooling, thereby solving the technical problem in the prior art that when measuring a special-shaped object to be measured, it may be necessary to frequently move a measuring component to measure the height of different positions on the special-shaped object to be measured, which is time-consuming and has low work efficiency; the application achieves the technical effect of being able to measure the height of different positions on the special-shaped object to be measured without having to move the measuring component too frequently, thereby shortening the measurement time and improving work efficiency.

[0005] The present application provides a laser height measuring instrument with a limit position tooling, comprising a placing platform, a sliding column, a sliding ring, a connecting rod, a mounting plate, a display terminal and a plurality of measuring rods; the sliding column is vertically arranged on the placing platform; the sliding ring is slidably sleeved on the sliding column, and a fastening bolt is arranged on the sliding ring; the connecting rod is horizontally arranged on the sliding ring, and one end of the connecting rod away from the sliding ring is connected to the mounting plate; the mounting plate is located above the placing platform; a plurality of limit positions are vertically opened on the mounting plate, and the measuring rods are the same in number and correspond one to one with the limit positions; the measuring rods include The invention comprises a top block and a rod body, wherein the top block is arranged at the top end of the rod body, and the rod body slides through the limit opening; the rod body is provided with scale lines; the display terminal is installed on the sliding ring; a detection module is integrated in the display terminal, so that the display terminal can display the height value between the bottom surface of the mounting plate and the placement table; a fixing frame is arranged in the limit opening, and a micro laser ranging module is arranged on the fixing frame; the interior of the rod body is hollow, and a sliding opening is opened on the side wall of the rod body; the fixing frame extends into the rod body through the sliding opening, and the micro laser ranging module is located in the rod body.

[0006] Furthermore, the outer wall of the rod body fits with the inner wall of the limiting opening, and the size of the top block is larger than the size of the limiting opening, so that the measuring rod will not fall off the limiting opening.

[0007] Furthermore, the micro laser ranging module can detect the distance between the fixing frame and the inner top surface of the rod body, and in an initial state, the distance between the fixing frame and the inner top surface of the rod body is zero; the micro laser ranging module is connected to the display terminal signal.

[0008] Furthermore, the above-mentioned laser height measuring instrument with limited position tooling also includes a plurality of pads and a plurality of countersunk screws, and the number of the pads and the countersunk screws is the same and corresponds one to one; a plurality of positioning holes are opened in the placement table, and the positioning holes are opened with internal threads matching the countersunk screws; a fastening channel is opened on the pad, and the countersunk screw passes through the fastening channel and is threadedly connected to the positioning hole, thereby fastening the pad to the placement table.

[0009] Furthermore, the cushion block is a cylinder; the cushion block includes a heating base plate, a fastening tube and an adjusting software; the heating base plate is a circular plate, and an inner opening is provided in the center of the heating base plate; the fastening tube is coaxially arranged on the heating base plate, and the fastening tube is a tubular structure, and the internal space of the fastening tube is a fastening channel; the adjusting software is a tubular structure, and the adjusting software is sleeved on the fastening tube.

[0010] Furthermore, the regulating software is hollow inside and is filled with an internal medium; wherein the internal medium is paraffin, and the melting point of the paraffin is 45 degrees Celsius to 55 degrees Celsius.

[0011] Furthermore, a plurality of support rings are arranged in the adjusting software, and the plurality of support rings are arranged in sequence from top to bottom, and the outer rings of the support rings are connected to the inner side walls of the adjusting software.

[0012] Furthermore, the adjustment software is also provided with a plurality of elastic membranes, the number of the elastic membranes is the same as the number of the support rings and they correspond one to one; the elastic membrane is an annular membrane, the inner ring of the elastic membrane is sleeved on the fastening tube, and the support ring is sleeved on the outer ring of the elastic membrane; the material of the elastic membrane is rubber.

[0013] Furthermore, the elastic membrane is hollow inside and is filled with magnetic powder.

[0014] Furthermore, the fastening tube is made of magnet.

[0015] One or more technical solutions provided in this application have at least the following technical effects or advantages:

[0016] By providing a sliding ring, multiple adjustable measuring rods and an integrated laser rangefinder, the sliding ring is flexibly adjusted and tightened on the vertical sliding column, and the multiple measuring rods are combined with the limit openings on the mounting plate to effectively solve the technical problem that in the prior art, when measuring special-shaped measuring objects, it may be necessary to frequently move the measuring components to measure the heights of different positions on the special-shaped measuring objects, which is time-consuming and has low work efficiency. This achieves the technical effect of being able to measure the heights of different positions on the special-shaped measuring objects without moving the measuring components too frequently, shortening the measurement time and improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of a laser height measuring instrument with a limit position fixture of the present invention;

[0018] Figure 2 It is a schematic diagram of the position of the measuring rod of the laser height measuring instrument with a limit position fixture of the present invention;

[0019] Figure 3 It is a schematic diagram of the structure of the measuring rod of the laser height measuring instrument with a limit fixture of the present invention;

[0020] Figure 4 It is a schematic diagram of the distribution of the limit openings of the laser height measuring instrument with the limit fixture of the present invention;

[0021] Figure 5It is a schematic diagram of the position of the fixing frame of the laser height measuring instrument with a limiting tooling of the present invention;

[0022] Figure 6 It is a schematic diagram of the position of the sliding opening of the laser height measuring instrument with a limit fixture of the present invention;

[0023] Figure 7 It is a schematic diagram of the positions of the countersunk screws and the spacers of the laser height measuring instrument with the limit fixture of the present invention;

[0024] Figure 8 It is a schematic diagram of the appearance of a pad of a laser height measuring instrument with a limit fixture of the present invention;

[0025] Fig. 9 It is a schematic diagram of the cushion block structure of the laser height measuring instrument with a limit fixture of the present invention;

[0026] Fig.10 It is a schematic diagram of the position of the support ring of the laser height measuring instrument with a limit fixture of the present invention;

[0027] Fig.11 It is a schematic diagram of the position of the elastic membrane of the laser height measuring instrument with a limit fixture of the present invention;

[0028] Fig.12 It is a schematic top view of the elastic membrane of the laser height measuring instrument with a limit fixture of the present invention;

[0029] Fig.13 The figure is a top view schematic diagram of the elastic membrane of the laser height measuring instrument with a limit fixture of the present invention.

[0030] In the figure: 10, placement table; 11, positioning hole; 20, sliding column; 30, sliding ring; 31, fastening bolt; 40, connecting rod; 50, mounting plate; 51, limit opening; 52, fixing frame; 53, micro laser ranging module; 60, measuring rod; 61, top block; 62, rod body; 621, sliding opening; 70, display terminal; 80, pad; 81, heating base plate; 82, fastening tube; 83, adjustment software; 831, inner medium; 832, support ring; 833, elastic membrane; 834, magnetic powder; 90, countersunk screw. DETAILED DESCRIPTION

[0031] To facilitate the understanding of the present invention, the present application will be described more comprehensively below with reference to the relevant drawings; the drawings show preferred embodiments of the present invention, but the present invention can be implemented in many different forms and is not limited to the embodiments described herein; on the contrary, the purpose of providing these embodiments is to enable a more thorough and comprehensive understanding of the disclosed content of the present invention.

[0032] It should be noted that the terms “vertical”, “horizontal”, “up”, “down”, “left”, “right” and similar expressions used in this document are only for illustrative purposes and do not represent the only implementation method.

[0033] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which the present invention belongs; the terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention; the term "and / or" used herein includes any and all combinations of one or more related listed items.

[0034] Embodiment 1: Figures 1 to 13 As shown, the laser height measuring instrument with a limited position tooling of the present application includes a placement table 10, a sliding column 20, a sliding ring 30, a connecting rod 40, a mounting plate 50, a display terminal 70, a plurality of measuring rods 60, a power assembly and a control unit;

[0035] The sliding column 20 is vertically arranged on the placement table 10 .

[0036] The sliding ring 30 is slidably sleeved on the sliding column 20 , and a fastening bolt 31 is disposed on the sliding ring 30 .

[0037] The fastening bolt 31 is threadedly connected to the sliding ring 30 , and the fastening bolt 31 abuts against the sliding column 20 .

[0038] It should be noted that the position of the sliding ring 30 can be controlled by adjusting the tightness of the fastening bolts 31 . The fastening bolts 31 are a common structure in the prior art and will not be described in detail herein.

[0039] The connecting rod 40 is horizontally arranged on the sliding ring 30 , and one end of the connecting rod 40 away from the sliding ring 30 is connected to the mounting plate 50 .

[0040] The mounting plate 50 is located above the placement table 10 .

[0041] A plurality of limit openings 51 are vertically opened on the mounting plate 50 , and the number of the measuring rods 60 is the same as that of the limit openings 51 and they correspond one to one.

[0042] It should be noted that the plurality of limit openings 51 may be 20, 30, 40, 50, 60 limit openings 51, etc. The specific number is selected according to actual needs and will not be described in detail here.

[0043] The measuring rod 60 includes a top block 61 and a rod body 62 . The top block 61 is disposed at the top end of the rod body 62 , and the rod body 62 slides through the limiting opening 51 .

[0044] The outer wall of the rod body 62 fits with the inner wall of the limiting opening 51 , and the size of the top block 61 is larger than that of the limiting opening 51 , so that the measuring rod 60 will not fall off from the limiting opening 51 .

[0045] The rod body 62 may be provided with scale lines, and the bottom end of the rod body 62 is the starting position of the scale lines.

[0046] It should be noted that the length of the rod body 62 is selected according to actual needs and will not be described in detail here.

[0047] The display terminal 70 is mounted on the sliding ring 30 , and a detection module is integrated in the display terminal 70 , so that the display terminal 70 can display the height value between the bottom surface of the mounting plate 50 and the placement table 10 .

[0048] It should be noted that the integrated detection module in the display terminal 70 may be a laser rangefinder, which is a prior art and will not be described in detail herein.

[0049] The sliding column 20 may be provided with scale lines.

[0050] The power assembly is used to provide energy for the operation of the height measuring device, preferably an AC power supply or a battery; the control unit is used to control the coordinated operation of the various components of the height measuring device, preferably a programmable logic controller; both are prior arts and will not be elaborated here.

[0051] When the height measuring device of the embodiment of the present application is actually running, the steps are as follows:

[0052] S1: Place the height measuring device on a stable work surface and ensure that the sliding column 20 is vertical and stable;

[0053] S2: Selecting a suitable number of measuring rods 60 according to the size and shape of the irregularly shaped object to be measured, and installing the measuring rods 60 on the mounting plate 50 through the limiting openings 51;

[0054] S3: Place the irregular-shaped object to be measured on the placement table 10 to ensure that it is stable and does not shake;

[0055] S4: Move the sliding ring 30 to a suitable height, and fix the position of the sliding ring 30 by adjusting the tightness of the fastening bolts 31, while ensuring that the bottoms of all measuring rods 60 are in contact with the irregularly shaped object to be measured;

[0056] S5: Start the height measurement device, the control unit will activate the laser rangefinder (or other integrated detection module) in the display terminal 70, and the display terminal 70 can display the height value between the bottom surface of the mounting plate 50 and the placement table 10, which is the reference value H1;

[0057] S6: Read the reading of the scale line on the corresponding rod body 62, which is the distance between the bottom end of the corresponding rod body 62 and the bottom surface of the mounting plate 50, and define this value as the change value L;

[0058] S7: The height value H of the irregularly shaped object to be measured corresponding to the rod body 62 is H=H1-L. The height values ​​of multiple points on the irregularly shaped object to be measured can be calculated simultaneously by using multiple measuring rods 60 without moving the sliding ring 30.

[0059] It should be noted that the laser height measuring instrument with a limit fixture in the present application can measure a variety of special-shaped objects. The specific usage scenario is selected according to the actual situation and will not be described in detail here.

[0060] The technical solutions in the above embodiments of the present application have at least the following technical effects or advantages:

[0061] 1. The setting of laser rangefinder improves the measurement accuracy of the reference value H. Combined with the reading of the scale line, the height of each point on the special-shaped measurement object can be accurately calculated;

[0062] 2. The measuring rods 60 of different quantities and specifications can be replaced to adapt to the measuring objects of different sizes and shapes, thus improving the versatility and flexibility of the equipment;

[0063] 3. The height of multiple points on the irregularly shaped object can be measured simultaneously without moving the sliding ring 30, thereby shortening the measuring time and improving the working efficiency.

[0064] Embodiment 2: In the above embodiment, the scale lines on the rod body 62 are read by manual visual method. Due to the angle of human eye sight, there will be certain errors in the readings. The embodiment of the present application is optimized based on the above embodiment.

[0065] like Figure 5 and Figure 6 As shown, a fixing frame 52 is arranged in the limiting opening 51 , and a micro laser ranging module 53 is arranged on the fixing frame 52 .

[0066] The rod body 62 is hollow inside, and a sliding opening 621 is formed on a side wall of the rod body 62 .

[0067] The fixing frame 52 extends into the rod body 62 through the sliding opening 621 , and the micro laser ranging module 53 is located in the rod body 62 .

[0068] The micro laser distance measuring module 53 is used to detect the distance between the fixing frame 52 and the inner top surface of the rod body 62 in real time, and in the initial state, the distance between the fixing frame 52 and the inner top surface of the rod body 62 is zero.

[0069] It should be noted that the micro laser ranging module 53 is a prior art and will not be described in detail here.

[0070] It should be noted that the top of the rod body 62 can be set to a flat head structure, and the inner top surface of the rod body 62 is perpendicular to the direction of the laser emitted by the micro laser ranging module 53, so that the inner top surface of the rod body 62 can reflect the laser well; the bottom of the rod body 62 can be set to a needle-shaped structure, so that the rod body 62 can measure more precisely, and the laser emitted by the micro laser ranging module 53 is toward the inner top surface of the rod body 62, so it will not be affected by the inner bottom surface of the rod body 62, and will not be affected by external light.

[0071] The micro laser ranging module 53 is connected to the display terminal 70 via a signal.

[0072] It should be noted that the fixing frame 52 fits the sliding opening 621 and can slide relative to it, so as to improve the stability of the measuring rod 60 .

[0073] The display terminal 70 is integrated with a calculation module, which can perform mathematical operations. The difference between the length of the rod body 62 and the mounting plate 50 in the initial state is equivalent to the distance between the bottom end of the rod body 62 and the bottom surface of the mounting plate 50. The distance value is defined as L1, and the value of L1 is input into the display terminal 70. Rod bodies 62 of different lengths correspond to different L1s. Relevant personnel can call the corresponding L1 in the display terminal 70 according to the specifications of the rod body 62. The distance between the fixing frame 52 and the inner top surface of the rod body 62 detected by the micro laser ranging module 53 is defined as L2, then L=L1-L2, and thus, the calculation module inside the display terminal 70 can calculate L according to the called L1 and the read L2.

[0074] It should be noted that the calculation module is a prior art, and the operation process of the calculation module can be implemented by the prior art, which will not be described in detail here.

[0075] It can be understood that the micro laser ranging module 53 is set in the measuring rod 60, which can prevent the external environment from affecting its measurement accuracy, and the use of the micro laser ranging module 53 to measure the inner top surface of the measuring rod 60 avoids the problem of large errors in optical rangefinders when the surface where the measuring point of the special-shaped measuring object is relatively smooth and the surface where the measuring point is located has a large inclination with the direction of the light.

[0076] The technical solutions in the above embodiments of the present application have at least the following technical effects or advantages:

[0077] 1. Automated measurement and calculation reduce human errors and improve measurement accuracy and reliability;

[0078] 2. The automated measurement process reduces manual operation time and improves work efficiency;

[0079] 3. It can adapt to the measurement needs of different sizes and specifications, improving the versatility and flexibility of the equipment.

[0080] Embodiment 3: The height measuring device in the above embodiment has certain limitations for measuring objects with irregular structures during use. The measuring objects with irregular structures are difficult to be effectively limited when placed on the placement table 10. The embodiment of the present application is optimized based on the above embodiment.

[0081] like Figure 7 and Figure 8 As shown, the laser height measuring instrument with a limit fixture in this embodiment further includes a plurality of cushion blocks 80 and a plurality of countersunk screws 90 , and the number of cushion blocks 80 and countersunk screws 90 is the same and corresponds one to one.

[0082] A plurality of positioning holes 11 are defined in the placement platform 10 , and internal threads matching the countersunk screws 90 are defined in the positioning holes 11 .

[0083] It should be noted that the plurality of positioning holes 11 may be 95, 96, 97, 98, 99 positioning holes 11, etc. The number of the positioning holes 11 is selected according to actual needs and will not be described in detail herein.

[0084] A fastening channel is provided on the cushion block 80 , and the countersunk screw 90 passes through the fastening channel and is threadedly connected in the positioning hole 11 , thereby fastening the cushion block 80 on the placement table 10 .

[0085] The cushion block 80 in this embodiment may be a rectangular parallelepiped.

[0086] It should be noted that the plurality of countersunk screws 90 may be 20, 30, 40, 50, 60 countersunk screws 90, etc. The specific number is selected according to actual needs and will not be described in detail here.

[0087] It should be noted that the plurality of cushion blocks 80 in this embodiment can be arranged in combination side by side on the placement table 10 , and two adjacent cushion blocks 80 are fitted and connected together.

[0088] It is understandable that, according to the shape and size of the irregularly shaped object to be measured, a suitable number of pads 80 and countersunk screws 90 are selected, and the position of the pads 80 is determined on the placement table 10 to ensure that the pads 80 can effectively limit the measured object.

[0089] Specifically, place the pad 80 at the corresponding position of the placement table 10, and ensure that the fastening channel on the pad 80 is aligned with the positioning hole 11; use the countersunk screw 90 to pass through the fastening channel on the pad 80 and screw it into the positioning hole 11 until the pad 80 is firmly fixed on the placement table 10; as needed, more pads 80 can be installed to form the required limiting structure, and the special-shaped measuring object can be placed on the limiting structure formed by the pad 80 to ensure that the measuring object is stable and does not move.

[0090] The technical solutions in the above embodiments of the present application have at least the following technical effects or advantages:

[0091] 1. Through the effective limit structure, the stability of the measured object during the measurement process is ensured, thereby improving the accuracy and reliability of the measurement;

[0092] 2. It can adapt to more types of special-shaped objects, improving the versatility and flexibility of the equipment;

[0093] 3. The pads 80 can be quickly selected and combined according to actual needs, which simplifies the operation process and improves work efficiency.

[0094] Embodiment 4: In the above embodiment, there may be a part of the pad 80 with a small contact surface with the irregularly shaped object to be measured, resulting in a low stability of the irregularly shaped object to be measured; the embodiment of the present application is optimized to a certain extent on the basis of the above embodiment.

[0095] like Fig. 9 As shown, the spacer 80 in this embodiment may be a cylinder.

[0096] The spacer block 80 includes a heating base plate 81 , a fastening tube 82 and an adjustment software 83 .

[0097] The heating bottom plate 81 is a circular plate, and an inner opening is formed in the center of the heating bottom plate 81 .

[0098] It should be noted that the heating base plate 81 is a heatable component, and the heating base plate 81 is electrically connected to the power assembly and the control unit.

[0099] It should be noted that the power of the heating base plate 81 is selected according to actual needs and will not be described in detail here.

[0100] The fastening tube 82 is coaxially arranged on the heating base plate 81, and the fastening tube 82 is a tubular structure, and the internal space of the fastening tube 82 is a fastening channel.

[0101] The diameter of the inner opening is smaller than the inner diameter of the fastening tube 82 .

[0102] It should be noted that the screw part on the countersunk screw 90 passes through the inner opening and is screwed into the positioning hole 11, and the head of the countersunk screw 90 can be pressed on the heating base plate 81, so that the pad 80 is fastened on the placement table 10. The fastening method of the above-mentioned countersunk screw 90 is a common design in the prior art and will not be repeated here.

[0103] The adjusting soft body 83 is a tubular structure, and the adjusting soft body 83 is sleeved on the fastening tube 82 .

[0104] The material of the adjusting software 83 is rubber.

[0105] Furthermore, the inside of the regulating soft body 83 is hollow and filled with an internal medium 831 .

[0106] The inner medium 831 is paraffin, and the melting point of paraffin is 45 degrees Celsius to 55 degrees Celsius.

[0107] It can be understood that the pad 80 is placed at the corresponding position of the placement table 10 to ensure that the fastening channel on the fastening tube 82 is aligned with the positioning hole 11; the countersunk screw 90 is used to pass through the inner opening on the heating base plate 81 and screwed into the positioning hole 11 to preliminarily fix the pad 80 on the placement table 10; the irregularly shaped object to be measured is placed on the adjusted pad 80, and the posture of the irregularly shaped object to be measured can be manually adjusted to ensure that the object to be measured is stable and does not move within a certain period of time. At the same time, the heating function of the heating base plate 81 is started by the control unit. During the heating process, the paraffin in the regulating software 83 gradually softens, and the shape of the pad 80 begins to adapt to the contour of the irregularly shaped object to be measured; when the paraffin is completely softened and adapted to the shape of the object to be measured, the heating function is turned off to allow the paraffin to cool and solidify naturally. After the paraffin is cooled and solidified, it is no longer necessary to manually maintain the object to be measured stable and immobile. In this process, the pad 80 as a whole can better adapt to the shape of the irregularly shaped object to be measured, so that it can contact with the pad 80 more smoothly, will not be scratched, and has a larger contact surface.

[0108] The technical solutions in the above embodiments of the present application have at least the following technical effects or advantages:

[0109] 1. Smooth contact and larger contact surface reduce the shaking and sliding of the object during measurement, and improve the stability and accuracy of measurement;

[0110] 2. The adjustability of the pad 80 enables the device to adapt to more types of irregularly shaped objects, thus improving the versatility and flexibility of the device;

[0111] 3. Smooth contact avoids the risk of scratching the object being measured and protects the surface quality of the object being measured.

[0112] Embodiment 5: The shape of the cushion block 80 in the above embodiment is difficult to restore after being changed, so that the service life of the cushion block 80 is reduced; the embodiment of the present application is optimized to a certain extent on the basis of the above embodiment.

[0113] like Fig.10 , Fig.11 and Fig.12 As shown, a plurality of support rings 832 are disposed in the adjusting soft body 83 , and the plurality of support rings 832 are arranged in sequence from top to bottom, and the outer rings of the support rings 832 are connected to the inner side wall of the adjusting soft body 83 .

[0114] The support ring 832 may be made of spring steel.

[0115] It should be noted that the plurality of support rings 832 may be 2, 3, 4, 5, 6 support rings 832, etc. The specific number is selected according to actual needs and will not be described in detail here.

[0116] Furthermore, a plurality of elastic membranes 833 are disposed in the regulating software 83 , and the number of the elastic membranes 833 is the same as that of the supporting rings 832 and they correspond one to one.

[0117] The elastic membrane 833 is an annular membrane, the inner ring of the elastic membrane 833 is sleeved on the fastening tube 82 , and the support ring 832 is sleeved on the outer ring of the elastic membrane 833 .

[0118] The elastic membrane 833 is made of rubber.

[0119] It should be noted that the elastic coefficient of the elastic film 833 is selected according to actual needs and will not be described in detail here.

[0120] It should be noted that the inner medium 831 is divided into multiple layers by the support ring 832 and the elastic membrane 833 .

[0121] It can be understood that when the heating base plate 81 is heated, the paraffin in the adjusting software 83 begins to soften, but due to the restriction of the support ring 832, the flow of the paraffin is controlled within a certain range, and the elasticity of the elastic membrane 833 enables the support ring 832 to deform slightly as the paraffin softens to adapt to the contour of the irregularly shaped measured object; when the heating stops, the paraffin begins to cool and solidify, and the rigidity of the support ring 832 helps the paraffin maintain a certain shape; by setting up multiple elastic membranes 833 to separate the paraffin, the paraffin will not gather at the bottom of the pad 80, and the paraffin can be distributed more evenly in the adjusting software 83.

[0122] When the pad 80 needs to be restored to its original state, the paraffin in the regulating software 83 is heated by heating the base plate 81, and then the pad 80 is restored by adjusting the position of the support ring 832. The elasticity of the elastic membrane 833 helps the paraffin to gradually return to its original state. As the paraffin is completely solidified, the pad 80 returns to its original shape to a certain extent and is ready for the next use.

[0123] It should be noted that it is difficult to completely restore the cushion block 80 to its original state after use, as long as it does not affect subsequent use.

[0124] The technical solutions in the above embodiments of the present application have at least the following technical effects or advantages:

[0125] 1. By arranging a plurality of support rings 832 in the adjustment software 83, the support rings 832 have sufficient rigidity and elasticity, and can provide support and limit the flow range of the paraffin when it softens, thereby preventing excessive deformation; when the heating base plate 81 stops heating and the paraffin cools and solidifies, the rigidity of the support rings 832 helps the paraffin maintain a certain shape, so that it is easier to restore to the original state when it is used next time;

[0126] 2. The additional multiple elastic membranes 833 not only enhance the elasticity of the structure, but also separate the inner medium 831 (paraffin) into multiple layers, thereby preventing the paraffin from gathering at the bottom of the pad 80, ensuring the uniform distribution of the paraffin in the adjustment software 83, and improving the adaptability of the pad 80 to the contour of the irregularly shaped measurement object;

[0127] 3. Due to the synergistic effect of the support ring 832 and the elastic membrane 833, the deformation of the cushion block 80 during the heating and cooling process is better controlled, reducing material fatigue and damage caused by the difficulty in restoring the shape, thereby extending the service life of the cushion block 80;

[0128] 4. When the pad 80 needs to be restored to its original state, by heating again and adjusting the position of the support ring 832, combined with the elasticity of the elastic membrane 833, the paraffin can be more easily guided to return to its original state, and this process is simpler and more efficient.

[0129] Embodiment 6: The adjustment software 83 in the above embodiment may fail to completely fit the surface of the object being measured during the deformation process. The embodiment of the present application makes certain optimizations based on the above embodiment.

[0130] like Fig.13 As shown, the elastic membrane 833 is hollow inside and is filled with magnetic powder 834 .

[0131] It should be noted that the particle size and quantity of the magnetic powder 834 are selected according to actual needs and will not be described in detail here.

[0132] Furthermore, the material of the fastening tube 82 is a magnet.

[0133] It should be noted that the magnetic powder 834 is added inside the elastic film 833 so that the elastic film 833 can actively change its shape under the action of an external magnetic field and can better adsorb and fit together with the ferromagnetic object to be measured.

[0134] It can be understood that when the measured object has a complex shape or requires a stronger adsorption force, the magnetic field strength and direction are changed through the magnetic field (electromagnetic coil or permanent magnet) control system, so that the magnetic powder 834 is rearranged in the adjustment software 83 to form a shape that better fits the contour of the measured object; at the same time, the effect of the magnetic force can also enhance the adsorption force between the ferromagnetic measured object and the adjustment software 83, preventing such a special-shaped measured object from moving during the measurement process.

[0135] The material of the fastening tube 82 is set to be a magnet, so that the fastening tube 82 itself becomes a magnetic field source, which can interact with the magnetic powder 834 in the elastic membrane 833, and achieve contactless control or enhance the connection strength between the fastening tube 82 and the elastic membrane 833 through the attraction of magnetic force; at the same time, under the attraction of this magnetic force, the adjustment software 83 can better restore its original shape.

[0136] The technical solutions in the above embodiments of the present application have at least the following technical effects or advantages:

[0137] 1. When an external magnetic field acts on the elastic film 833, the magnetic powder 834 will move or rearrange in response to the magnetic field, thereby changing the shape of the elastic film 833 or enhancing its local stiffness, so that the elastic film 833 can more flexibly adapt to the measurement objects of different shapes, thereby improving the accuracy and stability of the measurement;

[0138] 2. The fastening tube 82 acts as a magnet to generate magnetic force with the magnetic powder 834 in the elastic film 833, which can enhance the connection strength between the fastening tube 82 and the elastic film 833 without increasing mechanical contact, helping to reduce performance degradation caused by mechanical friction or wear, while improving the overall durability of the system;

[0139] 3. The shape of the elastic membrane 833 and the interaction between the fastening tube 82 and the elastic membrane 833 can be precisely controlled by adjusting the strength and direction of the external magnetic field, and rapid response and adaptive adjustment can be made according to real-time changes in the measured object, further improving the accuracy and efficiency of the measurement.

[0140] In summary, the laser height measuring instrument with a limit fixture of the present application can measure the height of different positions on a special-shaped object without moving the measuring component too frequently, thereby shortening the measurement time and improving the work efficiency.

[0141] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A laser height measuring instrument with a limit position fixture, It is characterized in that It comprises a placement platform (10), a sliding column (20), a sliding ring (30), a connecting rod (40), a mounting plate (50), a display terminal (70) and a plurality of measuring rods (60); The sliding column (20) is vertically arranged on the placement platform (10); The sliding ring (30) is slidably sleeved on the sliding column (20), and a fastening bolt (31) is provided on the sliding ring (30); The connecting rod (40) is horizontally arranged on the sliding ring (30), and one end of the connecting rod (40) away from the sliding ring (30) is connected to the mounting plate (50); The mounting plate (50) is located above the placement platform (10); The mounting plate (50) is vertically provided with a plurality of limit openings (51), and the number of the measuring rods (60) is the same as that of the limit openings (51) and they correspond one to one; The measuring rod (60) comprises a top block (61) and a rod body (62), wherein the top block (61) is arranged at the top end of the rod body (62), and the rod body (62) slides through the limiting opening (51); The rod body (62) is provided with scale lines; The display terminal (70) is mounted on the sliding ring (30); The display terminal (70) is integrated with a detection module, so that the display terminal (70) can display the height value between the bottom surface of the installation plate (50) and the placement platform (10); A fixing frame (52) is arranged in the limiting opening (51), and a micro laser ranging module (53) is arranged on the fixing frame (52); The rod body (62) is hollow inside, and a sliding opening (621) is provided on the side wall of the rod body (62); The fixing frame (52) extends into the rod body (62) through the sliding opening (621), and the micro laser ranging module (53) is located in the rod body (62).

2. The laser height measuring instrument with a limit fixture as claimed in claim 1, It is characterized in that The outer wall of the rod body (62) fits the inner wall of the limiting opening (51), and the size of the top block (61) is larger than the size of the limiting opening (51), so that the measuring rod (60) will not fall off the limiting opening (51).

3. The laser height measuring instrument with a limit fixture as claimed in claim 1, It is characterized in that The micro laser distance measuring module (53) is capable of detecting the distance between the fixing frame (52) and the inner top surface of the rod body (62), and in an initial state, the distance between the fixing frame (52) and the inner top surface of the rod body (62) is zero; The micro laser distance measuring module (53) is signal-connected to the display terminal (70).

4. The laser height measuring instrument with a limit fixture as claimed in claim 1, It is characterized in that It also includes a plurality of spacers (80) and a plurality of countersunk screws (90), and the spacers (80) and the countersunk screws (90) are the same in number and correspond one to one; A plurality of positioning holes (11) are provided in the placement platform (10), and internal threads matching the countersunk screws (90) are provided in the positioning holes (11); The cushion block (80) is provided with a fastening channel, and the countersunk screw (90) passes through the fastening channel and is threadedly connected in the positioning hole (11), thereby fastening the cushion block (80) to the placement table (10).

5. The laser height measuring instrument with a limit fixture as claimed in claim 4, It is characterized in that The cushion block (80) is a cylinder; The cushion block (80) comprises a heating base plate (81), a fastening tube (82) and an adjusting software (83); The heating bottom plate (81) is a circular plate, and an inner opening is provided at the center of the heating bottom plate (81); The fastening tube (82) is coaxially arranged on the heating bottom plate (81), and the fastening tube (82) is a tube-shaped structure, and the internal space of the fastening tube (82) is a fastening channel; The adjusting software (83) is a tubular structure, and the adjusting software (83) is sleeved on the fastening tube (82).

6. The laser height measuring instrument with a limit fixture as claimed in claim 5, It is characterized in that The regulating software (83) is hollow inside, and is filled with an internal medium (831); Wherein, the inner medium (831) is paraffin, and the melting point of paraffin is 45 degrees Celsius to 55 degrees Celsius.

7. The laser height measuring instrument with a limit fixture as claimed in claim 6, It is characterized in that A plurality of support rings (832) are arranged in the adjusting soft body (83), and the plurality of support rings (832) are arranged in sequence from top to bottom, and the outer ring of the support ring (832) is connected to the inner side wall of the adjusting soft body (83).

8. The laser height measuring instrument with a limit fixture as claimed in claim 7, It is characterized in that A plurality of elastic membranes (833) are also arranged in the regulating software (83), and the number of the elastic membranes (833) is the same as that of the supporting rings (832) and they correspond one to one. The elastic membrane (833) is an annular membrane, the inner ring of the elastic membrane (833) is sleeved on the fastening tube (82), and the support ring (832) is sleeved on the outer ring of the elastic membrane (833); The elastic membrane (833) is made of rubber.

9. The laser height measuring instrument with a limit fixture as claimed in claim 8, It is characterized in that The elastic film (833) is hollow inside, and is filled with magnetic powder (834).

10. The laser height measuring instrument with a limit fixture as claimed in claim 9, It is characterized in that The material of the fastening tube (82) is a magnet.

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