Guiding type rapid installation device for photoelectric deflectometer

Abstract

The invention discloses a guiding type rapid installation device for a photoelectric deflectometer. A guide hole is dug in the lower shell, a guide rod is inserted into the guide hole to be connected with the measuring host, and the lower end is provided with a hemispheroid guide head and a locking spring; symmetrical transverse limiting holes are formed in the two sides of the guide hole, the surface of a limiting pin shaft is sleeved with a limiting spring and inserted into the limiting holes, the limiting pin shaft is pushed by relative displacement of the upper wedge body and the lower wedge body, and the upper wedge body and the lower wedge body move in a matched mode through balls in circular grooves in inclined faces. The lower end of the lower shell is connected with a rotating disc, a pressure spring is embedded in the rotating disc, a steel ball is fixed to the end of the pressure spring and rotates in cooperation with an outer ring disc, the lower end of the outer ring disc is subjected to height and angle adjustment through an adjusting column, the lower end of the adjusting column is connected with a pressed bottom plate, and the whole device is fixed to the surface of a measured structure through a mounting base at the lowermost end. According to the device, rapid installation and replacement of the photoelectric deflectometer are realized, various adjustment requirements and high-precision measurement scene requirements can be met, and the installation efficiency and the measurement stability of equipment can be remarkably improved.

Description

Technical Field

[0001] This application relates to the field of measurement equipment installation technology, and in particular to a guide-type quick installation device for a photoelectric deflectometer. Background Technology

[0002] As a high-precision non-contact displacement measurement device, the photoelectric deflectometer is widely used in deflection and displacement detection in bridges, building structures, and other engineering projects due to its advantages such as non-contact multi-point measurement and fast response speed. Current on-site installation methods for photoelectric deflectometers mostly involve bolt fastening, welding, or temporary bracket erection. These methods have long installation cycles, are highly dependent on on-site conditions, and make it difficult to guarantee positioning accuracy with repeated installations. While some brackets designed for convenience can achieve rapid placement, they still have significant shortcomings in terms of protection, angle fine-tuning capabilities, and vibration resistance, making it difficult to maintain optical axis stability in high-precision measurement scenarios, thus affecting measurement accuracy and data consistency. Existing technologies cannot fully meet the requirements of high-efficiency, high-repeatability, and high-stability measurements for photoelectric deflectometers. Therefore, it is necessary to design a user-friendly, self-locking, and vibration-resistant rapid installation device for photoelectric deflectometers to solve the above problems.

[0003] Application content The purpose of this application is to provide a quick installation device for a photoelectric deflectometer, so as to solve a series of problems encountered in the installation and use of photoelectric deflectometers mentioned in the background art.

[0004] To achieve the above objectives, this application provides the following technical solution: A guided rapid installation device for a photoelectric deflectometer, characterized in that it comprises: a protective shell, a guiding assembly, a self-locking assembly, an adjusting assembly, a vibration damping layer, and a mounting base; the protective shell consists of an upper shell and a lower shell fitted together by grooves; the upper part of the lower shell has a guide hole, a guide rod is inserted into the guide hole and its upper end is connected to the measuring host, and the lower end of the guide rod is provided with a hemispherical guide head and a locking spring; symmetrical transverse limiting holes are provided on both sides of the guide hole, a limiting spring is sleeved on the surface of the limiting pin and inserted into the limiting hole, the limiting pin is pushed by the relative displacement of the upper and lower wedges and limits the vertical displacement of the guide rod, the upper and lower wedges are fitted together by ball bearings and a circular groove; the lower end of the lower shell is connected to a rotating disk, and a pressure spring is embedded in the rotating disk, the end of the pressure spring is fixed with a steel ball, the steel ball rotates in cooperation with an outer ring disk with a semi-circular protrusion, the lower end of the outer ring disk is adjusted by three adjusting columns for overall height and angle adjustment of the device, the lower end of the adjusting columns is connected to a pressure-bearing base plate with a vibration damping layer, and the entire device is fixed to the surface of the structure being measured by the mounting base at the bottom.

[0005] As a preferred embodiment, the lower wedge has two vertical and one horizontal circular grooves that fit the size of the ball, with the horizontal groove located in the lower half of the lower wedge. The upper wedge has a spherical shape corresponding to the size of the ball, and the ball is fitted between the upper and lower wedges and can rotate freely.

[0006] As a preferred embodiment, the limiting pin has two different diameters. The thinner diameter section is located inside the overall device, and a limiting spring is sleeved on its surface. The thicker diameter section fits into the limiting hole.

[0007] As a preferred embodiment, the inner end of the limiting hole has an annular locking protrusion, which applies pressure to the limiting spring in conjunction with the thicker section of the limiting pin when the whole device is in operation.

[0008] As a preferred embodiment, the vibration damping layer consists of two aluminum alloy panels and an aluminum honeycomb core material connected at intervals by structural epoxy adhesive, and the perimeter of the vibration damping layer is sealed with foam sealing strips.

[0009] As a preferred embodiment, the upper and lower housings are fastened together by a dovetail joint, forming a semi-enclosed cavity with a cable channel.

[0010] Compared with the prior art, this application has the following advantages: 1. This application adopts a simple mechanical structure. The locking and unlocking of the measuring host can be achieved by operating the ear plate to drive the relative displacement of the upper and lower wedges. At the same time, the vertical locking spring and guide hole ensure high positioning accuracy during the instrument insertion process. Compared with the traditional bolt fixing method, it can be installed without cumbersome tools, significantly reducing labor intensity and improving work efficiency. It can also avoid the complicated work of secondary installation and repeated calibration.

[0011] 2. The horizontal adjustment module in this application consists of a steel ball, a spring, a turntable, and a cylindrical protrusion. It achieves horizontal graded rotation of the entire device with fewer components. Combined with the angle adjustment of the spiral column, the device can adapt to the measurement angle requirements in most practical situations.

[0012] 3. This application adds a vibration damping layer with a honeycomb core plate structure, which can effectively absorb and convert the lateral and longitudinal vibration energy from the mounting base into small deformation energy, thereby isolating low-frequency vibration and environmental noise transmitted from the measured structure, making it very suitable for scenarios with high-precision measurement requirements.

[0013] 4. Due to its rapid installation and protective features, this application is particularly suitable for long-term field or on-site working scenarios. The semi-enclosed cavity is compatible with various types of sensing elements, exhibiting strong versatility and applicability. Attached Figure Description To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is the main structural view of this application; Figure 2 This is a sectional view of the structure of this application; Figure 3 This is a partial front view of the self-locking component of this application; Figure 4 This is a partial structural cross-sectional view of the horizontal rotation module in section AA of this application; Figure 5 This is a partial structural cross-sectional view of the vertical adjustment module and the vibration damping layer in this application; In the diagram: 1-Protective housing; 101-Upper housing; 102-Lower housing; 2-Measuring host; 3-Guide assembly; 301-Guide rod; 302-Guide head; 303-Vertical locking spring; 4-Self-locking assembly; 401-Upper wedge; 402-Lower wedge; 403-Limit pin; 404-Limit spring; 405-Ear plate; 406-Ear plate cover; 407-Ball bearing; 5-Adjusting assembly; 501-Rotation spring; 502-Steel ball; 503-Rotating disk; 504-Outer ring disk; 505-Outer sleeve; 506-Knob; 507-Threaded column; 508-Pressure base plate; 6-Vibration damping layer; 601-Panel; 602-Core material; 7-Mounting base. Detailed Implementation

[0015] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings.

[0016] In some of the processes described in the specification, claims, and accompanying drawings of this application, multiple operations appearing in a specific order are included. However, it should be clearly understood that these operations may not be executed in the order they appear herein, or may be executed in parallel. The operation numbers, such as 101, 102, etc., are merely used to distinguish different operations and do not themselves represent any execution order. Furthermore, these processes may include more or fewer operations, and these operations may be executed sequentially or in parallel. It should be noted that the descriptions such as "first," "second," etc., in this document are used to distinguish different messages, devices, modules, etc., and do not represent a chronological order, nor do they limit "first" and "second" to different types.

[0017] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0018] Please see Figure 1-5 This application provides a technical solution comprising: a protective housing 1, a guide assembly 3, a self-locking assembly 4, an adjustment assembly 5, a vibration damping layer 6, and a mounting base 7.

[0019] The protective housing 1 is fastened by the upper housing 101 and the lower housing 102 through a dovetail groove sliding fit, forming a semi-enclosed cavity to house the measuring host 2, with a cable channel reserved at the rear for cable entry and exit. The interior of the lower housing 102 provides space for the guide assembly 3 and the self-locking assembly 4, and the housing structure protects the internal components.

[0020] In this embodiment, during instrument installation, the guide head 302 is inserted into the guide hole and presses the vertical locking spring 303. At the same time, the ear plate 405 is pushed downward, causing the ball 407 between the upper wedge 401 and the lower wedge 402 to roll, resulting in relative displacement between them. This pushes the limiting pin 403 to move into the lower housing 102, and together with the vertical locking spring 303, the movement of the guide head 302 is restricted. The limiting spring 404, which is sleeved on the surface of the thin diameter section of the limiting pin 403, is gradually compressed as the pin moves inward due to the sudden change in the pin diameter and the protrusion at the inner end of the limiting hole. At this time, the upper wedge 401 and the lower wedge 402 are locked together by the transverse groove.

[0021] In this embodiment, when the instrument is disassembled or replaced, the ear plate 405 is moved back to its original position. Under the action of the limiting spring 404, the limiting pin 403 pushes the lower wedge 402 to move outward, and the ball bearing 407 drives the upper wedge 401 to slide upward, thereby removing the restriction on the guide head 302 and completing the unlocking of the measuring host 2.

[0022] In this embodiment, a rotating spring 501 is embedded in the rotating disk 503, and a steel ball 502 is fixed at the end of the spring. When the device rotates horizontally, it drives the steel ball 502 on the rotating disk 503 to move, so that it cooperates with the semi-cylindrical protrusion on the inner side of the outer ring disk 504 to realize the adjustment of the horizontal angle. At the same time, with the help of the pre-compressed rotating spring 501, a locking force is applied to the steel ball 502 to prevent the rotation angle from drifting and to fix the rotation angle.

[0023] In this embodiment, the height angle adjustment function is achieved by three adjustment columns. The upper end of each adjustment column, namely the outer sleeve 505, is connected to the outer ring disk 504, and the lower end, namely the threaded column 507, is connected to the pressure base plate 508. A locking protrusion structure exists between the outer sleeve 505 and the threaded column 507 to prevent it from falling off due to over-adjustment. Furthermore, the thread on the threaded column 507 is a single-start thread structure, ensuring that the entire device does not experience vertical drift during long-term operation. The adjustment columns are driven by a knob 506, enabling precise adjustment of the pitch or yaw angle of the measuring host 2.

[0024] The vibration damping layer 6 is located on the upper end of the mounting base 7 and serves as a buffer structure between the overall device and the structure under test. It is cylindrical and coaxially connected to the mounting base 7. The overall structure is a honeycomb sandwich panel. Specifically, it is arranged by alternating connections between aluminum alloy panels 601 with structural epoxy adhesive and aluminum honeycomb core material 602. The vibration damping layer 6 is sealed with sealing strips to prevent external particles from entering. As a combination of elasticity and damping, the vibration damping layer 6 reduces the optical axis offset and reading drift caused by the vibration of the base when the overall device is subjected to field vibration, impact and low-frequency shaking, ensuring the reliability of data in high-precision measurement scenarios.

[0025] The mounting base 7 is the part of the device that directly contacts the structure under test. It has a strip mounting groove on its surface and can be fixed to the surface of the structure under test for a long time by means of bolts, expansion parts or other fixing components.

[0026] It should be noted that in the description of this application, the orientation or positional relationship indicated by terms such as "horizontal", "vertical", "up", "down", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "vertical", "horizontal", and "vertical" is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing this application and simplifying the description, and does not imply that the device referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation on this application.

[0027] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A guide-type quick-installation device for a photoelectric deflectometer, characterized in that, include: Protective housing, guide assembly, self-locking assembly, adjustment assembly, vibration damping layer, and mounting base; The protective housing consists of an upper housing and a lower housing fitted together by grooves. A guide hole is cut into the upper part of the lower housing, into which a guide rod is inserted and connected at its upper end to the measuring host. A hemispherical guide head and a locking spring are provided at the lower end of the guide rod. Symmetrical transverse limiting holes are provided on both sides of the guide hole. A limiting spring is fitted onto the surface of a limiting pin and inserted into the limiting hole. The limiting pin is pushed by the relative displacement of the upper and lower wedges, limiting the vertical displacement of the guide rod. The upper and lower wedges are fitted together by ball bearings and a circular groove. A rotating disk is connected to the lower end of the lower housing, and a pressure spring is embedded within the rotating disk. A steel ball is fixed to the end of the pressure spring, and the steel ball rotates in conjunction with an outer ring disk with a semi-circular protrusion. The lower end of the outer ring disk is adjusted by three adjusting columns to regulate the overall height and angle of the device. The lower ends of the adjusting columns are connected to a pressure-bearing base plate with an anti-vibration damping layer. The entire device is fixed to the surface of the structure being measured via a mounting base at the lowest end.

2. The guide-type quick-installation device for a photoelectric deflectometer according to claim 1, characterized in that: The lower wedge has two vertical and one horizontal circular grooves that fit the size of the ball. The horizontal groove is located in the lower half of the lower wedge. The upper wedge has a spherical shape corresponding to the size of the ball. The ball is fitted between the upper and lower wedges and can rotate freely.

3. The guide-type quick-installation device for a photoelectric deflectometer according to claim 1, characterized in that: The limiting pin has two different diameters. The thinner diameter section is located inside the overall device, and a limiting spring is sleeved on its surface. The thicker diameter section fits into the limiting hole.

4. The guide-type quick-installation device for a photoelectric deflectometer according to claim 1, characterized in that: The inner end of the limiting hole has an annular locking protrusion, which applies pressure to the limiting spring when the whole device is working in conjunction with the thicker section of the limiting pin.

5. The vibration damping layer according to claim 1, characterized in that: The vibration damping layer consists of two aluminum alloy panels and an aluminum honeycomb core material connected at intervals by structural epoxy adhesive, and the perimeter of the vibration damping layer is sealed with foam sealing strips.

6. The guide-type quick-installation device for a photoelectric deflectometer according to claim 1, characterized in that: The upper and lower housings are fastened together by a dovetail joint, forming a semi-enclosed cavity with a cable channel.

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