Bridge cable wire separation plate internal shrinkage value non-contact measuring device

Abstract

The utility model provides a bridge cable wire separation board inner shrink value non -contact measuring device, the support of device is placed on the anchor cup, support fixed bolt passes through the through -groove of support set and is screwed into the anchor cup end face bolt hole, connects with the anchor cup of support, the connecting plate has the strip through -groove, the through -groove of strip of connecting plate fixed bolt and the through -groove of support set, the bolt head of connecting plate fixed bolt presses on the connecting plate, and connecting plate fixed nut is screwed on connecting plate fixed bolt and is pressed against the support, and connecting plate and support are connected, the sensor passes through the strip through -groove of connecting plate and is fixed on the connecting plate, and the sensor is aimed at the measurement point of wire separation board circumference and is preset, the sensor is connected with data acquisition ware through data line, and data acquisition ware is connected with host computer. The utility model realizes wire separation board inner shrink value's multi -point synchronous measurement and non -contact type dynamic monitoring, improves the measurement precision while simplifying the operation procedure, and adapts the compact structure of cold cast anchor.

Description

Technical Field

[0001] This utility model belongs to the field of bridge cable anchorage performance testing technology, specifically relating to a non-contact measuring device for the inward shrinkage value of bridge cable wire splitting plate. Background Technology

[0002] In bridge construction, stay cables, as the main load-bearing components, directly affect the stability of the overall bridge structure due to their safety and reliability. Cold-cast anchorages are critical connecting components for stay cables, with the wire-split plate being a core component. The indentation value of the wire-split plate is an important indicator for evaluating the anchoring performance of cold-cast anchorages. Excessive indentation value may lead to anchorage failure of the stay cables, thereby threatening the safety of the bridge structure.

[0003] Currently, the methods for measuring the shrinkage value of the wire-splitter plate in cold-cast anchors have significant shortcomings. During cable tensioning, the cold-cast anchor is located inside a two-part connector, and the connector must be assembled into a single structure before tensioning, which inherently makes measuring the shrinkage value difficult. The shortcomings of traditional measurement methods are particularly prominent. They require three-point measurement of the wire-splitter plate using contact tools such as depth calipers after the entire over-tensioning process is completed. This method is not only inefficient but also prone to low accuracy due to the subjective nature of manual operation and the cumulative error from tool contact.

[0004] Existing automatic measuring devices also have obvious problems: First, the sensor needs to be in direct contact with the wire splitter, and after long-term use, the sensor probe is prone to wear and aging, which directly affects the stability of measurement accuracy; Second, the overall structure of the device is complex, which not only increases the manufacturing cost, but also increases the difficulty of installation and debugging, and places high demands on the professional and technical level of the operators. Summary of the Invention

[0005] This utility model provides a non-contact measuring device for the shrinkage value of the wire splitting plate of a bridge cable. Its purpose is to overcome the shortcomings of the prior art, realize multi-point synchronous measurement and non-contact dynamic monitoring of the shrinkage value of the wire splitting plate, improve the measurement accuracy while simplifying the operation process, and adapt to the compact structure of cold-cast anchorages.

[0006] The technical solution adopted by this utility model to solve its technical problem is: A non-contact measuring device for the inward shrinkage value of a bridge cable wire splitter plate, characterized in that: The support is placed on the anchor cup; The bracket fixing bolts pass through the through grooves provided in the bracket and are screwed into the bolt holes on the end face of the anchor cup to connect the bracket and the anchor cup; The connecting plate has a strip-shaped through groove. The connecting plate fixing bolt passes through the strip-shaped through groove and the through groove provided in the bracket. The bolt head of the connecting plate fixing bolt presses on the connecting plate. The connecting plate fixing nut is screwed on the connecting plate fixing bolt and presses against the bracket, connecting the connecting plate and the bracket. The sensor passes through the strip groove of the connecting plate and is fixed on the connecting plate. The sensor is aligned with the preset measurement point on the circumference of the wire splitting plate. The sensor is connected to the data acquisition unit via a data cable, and the data acquisition unit is connected to the host computer.

[0007] The bracket includes a lower arc plate with a lower arc groove, and the bracket fixing bolts are screwed into the bolt holes on the end face of the anchor cup after passing through the lower arc groove of the lower arc plate.

[0008] The bracket includes an upper arc plate with an upper arc groove. The connecting plate fixing bolt passes through the strip groove of the connecting plate and the upper arc groove of the upper arc plate. The bolt head of the connecting plate fixing bolt presses on the connecting plate. The connecting plate fixing nut is screwed on the connecting plate fixing bolt and presses against the upper arc plate, connecting the connecting plate and the bracket.

[0009] The sensor is a threaded laser displacement sensor. Both sides of the strip-shaped through groove are provided with sensor fixing nuts screwed onto the threads of the threaded laser displacement sensor housing. The sensor fixing nuts clamp the connecting plate, and the threaded laser displacement sensor is mounted on the connecting plate.

[0010] A rubber pad is placed between the bracket and the end face of the anchor cup.

[0011] Several connecting plates are evenly distributed around the circumference of the bracket. Beneficial effects

[0012] 1. The bracket is fixed by using the existing bolt holes on the end face of the anchor cup, which eliminates the need for additional drilling. This simplifies the installation, establishes a stable measurement benchmark, reduces the interference of external vibrations, displacements and other factors on the measurement results, and improves the accuracy of the data.

[0013] 2. Laser non-contact measurement is used to avoid mechanical errors, and local deformation interference is reduced by multi-point averaging calculation.

[0014] 3. The measurement process only requires following the set steps. The data acquisition unit and the host automatically complete the data acquisition, processing and analysis, greatly reducing manual operation and human error.

[0015] 4. Adjust the sensor position through the slotted holes on the bracket and connecting plate to ensure that the laser beam can be accurately and vertically directed to the preset measurement point on the wire-splitting plate, avoiding the influence of alignment deviation on the measurement results.

[0016] 5. It can synchronously record the inward shrinkage of the split plate during the entire tensioning and loading process of the stay cable, capture the instantaneous displacement peak, and provide more comprehensive data support for anchor stress analysis.

[0017] 6. The adjustable combination structure of the bracket and connecting plate can be adapted to cold-cast anchors of different specifications, effectively solving the problem of limited measurement space caused by the small gap between the wire dividing plate and the anchor cup. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] Figure 1 This is a schematic diagram of the working process of this utility model; Figure 2 This is a schematic diagram of the bracket of this utility model; Figure 3 This is a schematic diagram of the connecting plate of this utility model. Detailed Implementation

[0020] To more clearly illustrate the technical solution of this utility model, the accompanying drawings used in the description will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other embodiments can be obtained based on these drawings without creative effort. To facilitate understanding of this utility model, a more detailed description of this utility model will be provided below in conjunction with the accompanying drawings and specific embodiments.

[0021] like Figure 1 , Figure 2 , Figure 3 As shown: Includes rubber pad 2, bracket 3, bracket fixing bolt 4, connecting plate 5, connecting plate fixing nut 6, connecting plate fixing bolt 7, sensor fixing nut 8, threaded laser displacement sensor 9, data cable 10, data acquisition unit 11, and host 12.

[0022] The bracket 3 includes an upper arc plate with an upper arc-shaped through groove 302 and a lower arc plate with a lower arc-shaped through groove 301. The upper arc plate and the lower arc plate are connected by a vertical plate 303 and an arc-shaped vertical plate 304.

[0023] The bracket 3 is placed on the anchor cup 1.

[0024] The bracket fixing bolt 4 passes through the lower arc-shaped through groove 301 of the lower arc-shaped plate and is screwed into the bolt hole on the end face of the anchor cup. The bracket 3 and the anchor cup 1 are connected by the bracket fixing bolt 4. The bolt hole on the end face of the anchor cup is the process hole for installing the anchor cover plate, which belongs to the original structure of the anchor cup.

[0025] A rubber pad 2 is installed between the support 3 and the end face of the anchor cup 1, which can eliminate the assembly gap and buffer the vibration and impact during the tensioning process, ensuring the stability of the support.

[0026] The connecting plate 5 has a strip-shaped through groove 501. The connecting plate fixing bolt 7 passes through the strip-shaped through groove 501 and the upper arc-shaped through groove 302 of the upper arc-shaped plate. The bolt head of the connecting plate fixing bolt 7 presses on the connecting plate 5. The connecting plate fixing nut 6 is screwed on the connecting plate fixing bolt 7 and presses against the upper arc-shaped plate. The connecting plate fixing nut 6 and the connecting plate fixing bolt 7 connect the connecting plate 5 and the bracket 3. Several connecting plates 5 are evenly distributed and fixed in a predetermined circumference.

[0027] Six threaded laser displacement sensors 9 are passed through the strip-shaped through slot 501 of the connecting plate 5. Both sides of the strip-shaped through slot 501 are provided with sensor fixing nuts 8 screwed onto the threads of the shell of the threaded laser displacement sensor 9. The sensor fixing nuts 8 clamp the connecting plate 5, and the threaded laser displacement sensors 9 are installed on the connecting plate 5 to ensure that the position of the threaded laser displacement sensors 9 is stable.

[0028] The position of the sensor 9 can be adjusted by the upper arc-shaped through groove 302, the lower arc-shaped through groove 301, and the strip-shaped through groove 501, so that each sensor 9 can be aligned with the preset uniformly distributed measurement points on the circumference of the wire splitting plate.

[0029] All sensors 9 are connected to the data acquisition unit 11 via data cable 10, which is used to synchronously trigger all sensors to start measurement.

[0030] The data acquisition unit 11 is connected to the host 12, and the host issues control commands to realize the synchronous acquisition, processing and analysis of data from all measuring points.

[0031] The working process of this utility model: Before over-tensioning the stay cable, six evenly distributed measurement points are pre-set on the circumference of the wire-splitting plate. A rubber pad 2 is placed between the end face of the anchor cup 1 and the bracket 3, and the bracket 3 is fixed to the anchor cup 1 using bracket fixing bolts 4. Then, the connecting plate 5 is connected and fixed to the bracket 3 using connecting plate fixing bolts 7 and connecting plate fixing nuts 6. Six threaded laser displacement sensors 9 are then passed through the connecting plate 5 and initially locked with sensor fixing nuts 8, achieving temporary fixation of the threaded laser displacement sensors 9.

[0032] The positions of the threaded laser displacement sensors 9 are finely adjusted using the upper arc-shaped through groove 302, the lower arc-shaped through groove 301, and the strip-shaped through groove 501 until the laser beams of each threaded laser displacement sensor 9 are precisely and vertically directed towards the corresponding preset measurement points on the wire-splitting plate. After debugging, all fixing bolts and nuts are tightened again to ensure the overall stability of the device.

[0033] All threaded laser displacement sensors 9 are connected to the data acquisition unit 11 via data cable 10, and then the data acquisition unit 11 is connected to the host 12. The host 12 issues a start command, and the data acquisition unit 11 synchronously triggers all threaded laser displacement sensors 9 to start measurement.

[0034] Throughout the entire tensioning and loading process of the stay cables, each threaded laser displacement sensor 9 collects distance data at its corresponding measuring point in real time, and transmits it to the data acquisition unit 11 via the data cable 10. The data acquisition unit 11 then uploads the data to the host 12. The host 12 automatically calculates the shrinkage value and shrinkage uniformity parameters of the wire-splitting plate at each moment according to preset logic, realizing dynamic real-time monitoring of the shrinkage value of the wire-splitting plate and providing accurate data support for the anchoring performance evaluation of cold-cast anchorages.

[0035] This device utilizes the existing structure of the anchor cup to establish a stable benchmark and employs a non-contact measurement method to solve the problems of damage to the workpiece and the introduction of additional errors in traditional contact measurements. The measurement error is ≤0.01mm. It also simplifies the operation process, is compatible with cold-cast anchors of different specifications, and effectively addresses the shortcomings of low accuracy and poor adaptability in traditional measurements. It is suitable for testing the anchoring performance of cold-cast anchors for bridge cables and has high engineering application value.

[0036] The various embodiments described in this specification are presented in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. The above description of the disclosed embodiments enables those skilled in the art to implement or use this invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this invention. Therefore, this invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A non-contact measuring device for the inward shrinkage value of a bridge cable wire splitter plate, characterized in that: The bracket is placed on the anchor cup; the bracket fixing bolt passes through the through groove of the bracket and is screwed into the bolt hole on the end face of the anchor cup to connect the bracket and the anchor cup; the connecting plate has a strip-shaped through groove, the connecting plate fixing bolt passes through the strip-shaped through groove and the through groove of the bracket, the bolt head of the connecting plate fixing bolt presses on the connecting plate, the connecting plate fixing nut is screwed on the connecting plate fixing bolt and presses against the bracket to connect the connecting plate and the bracket; the sensor passes through the strip-shaped through groove of the connecting plate and is fixed on the connecting plate, the sensor is aligned with the preset measurement point on the circumference of the wire dividing plate; the sensor is connected to the data acquisition unit through a data cable, and the data acquisition unit is connected to the host.

2. The non-contact measuring device for the inward shrinkage value of a bridge cable wire splitter as described in claim 1, characterized in that: The bracket includes a lower arc plate with a lower arc groove, and the bracket fixing bolts are screwed into the bolt holes on the end face of the anchor cup after passing through the lower arc groove of the lower arc plate.

3. The non-contact measuring device for the inward shrinkage value of a bridge cable wire splitter as described in claim 1, characterized in that: The bracket includes an upper arc plate with an upper arc groove. The connecting plate fixing bolt passes through the strip groove of the connecting plate and the upper arc groove of the upper arc plate. The bolt head of the connecting plate fixing bolt presses on the connecting plate. The connecting plate fixing nut is screwed on the connecting plate fixing bolt and presses against the upper arc plate, connecting the connecting plate and the bracket.

4. The non-contact measuring device for the inward shrinkage value of a bridge cable wire splitter as described in claim 1, characterized in that: The sensor is a threaded laser displacement sensor. Both sides of the strip-shaped through groove are provided with sensor fixing nuts screwed onto the threads of the threaded laser displacement sensor housing. The sensor fixing nuts clamp the connecting plate, and the threaded laser displacement sensor is mounted on the connecting plate.

5. The non-contact measuring device for the inward shrinkage value of a bridge cable wire splitter as described in claim 1, characterized in that: A rubber pad is placed between the bracket and the end face of the anchor cup.

6. The non-contact measuring device for the inward shrinkage value of a bridge cable wire splitter as described in claim 1, characterized in that: Several connecting plates are evenly distributed around the circumference of the bracket.

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