WO2021120478A1 - Welding seam detection and positioning fixture - Google Patents

Welding seam detection and positioning fixture Download PDF

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Publication number
WO2021120478A1
WO2021120478A1 PCT/CN2020/086883 CN2020086883W WO2021120478A1 WO 2021120478 A1 WO2021120478 A1 WO 2021120478A1 CN 2020086883 W CN2020086883 W CN 2020086883W WO 2021120478 A1 WO2021120478 A1 WO 2021120478A1
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Prior art keywords
transmission
clamping
clamping jaw
rod
tube
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PCT/CN2020/086883
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French (fr)
Chinese (zh)
Inventor
朱烨
林茂广
梅永
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江苏科泰检测技术服务有限公司
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Publication of WO2021120478A1 publication Critical patent/WO2021120478A1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B11/00—Work holders not covered by any preceding group in the subclass, e.g. magnetic work holders, vacuum work holders
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D19/00—Structural or constructional details of bridges
    • E01D19/10—Railings; Protectors against smoke or gases, e.g. of locomotives; Maintenance travellers; Fastening of pipes or cables to bridges
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/22—Details, e.g. general constructional or apparatus details
    • G01N29/26—Arrangements for orientation or scanning by relative movement of the head and the sensor
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/20—Metals
    • G01N33/204—Structure thereof, e.g. crystal structure
    • G01N33/2045—Defects

Definitions

  • the utility model belongs to the technical field of welding seam detection, in particular to a welding seam detection positioning fixture.
  • Flaw detection is also called "non-destructive testing", which is a technique to check whether there are defects in metal surfaces and welds.
  • non-destructive testing techniques for internal defects of welds include ultrasonic testing and radiographic testing. They are usually inspected on the surface of the weld by the inspector holding the flaw detection device. However, the position of the weld cannot be stabilized by manual operation, resulting in the accuracy of the inspection. Unexpected results.
  • the main technical problem solved by the utility model is to provide a welding seam detection positioning fixture, which is clamped at the inspected position, which facilitates the inspection of the flaw detection head, ensures the distance between the flaw detection head and the inspected welding seam, and ensures the reliability of the inspection.
  • a technical solution adopted by the present utility model is: a welding seam detection and positioning fixture, including a substrate, a clamping mechanism and a positioning mechanism, the clamping mechanism and the positioning mechanism are both mounted on the substrate ;
  • the clamping mechanism includes a first clamping jaw, a second clamping jaw, and a clamping drive mechanism for driving the first clamping jaw and the second clamping jaw to approach each other, and a first transmission shaft and a second transmission are arranged between the two clamping jaws.
  • the first transmission shaft includes a first transmission tube and a first transmission rod, the first transmission tube is sleeved on the first transmission rod, and the first transmission tube is opposite to the first transmission rod Turn, the first transmission tube is fixed to the first clamping jaw, and the first transmission rod is fixed to the second clamping jaw;
  • the second transmission shaft includes a second transmission tube and the second transmission rod, the second transmission tube is sleeved on the second transmission rod, and the second transmission tube is opposite to the second transmission rod.
  • the second transmission tube is fixed to the second clamping jaw, the second transmission rod is fixed to the first clamping jaw, and the first transmission tube and the second transmission tube are both meshed with transmission teeth;
  • the positioning mechanism includes a telescopic rod, a mounting plate and a pressure column
  • the mounting plate is equipped with a flaw detection head, two sides of the flaw detection head are provided with pressure columns, and the pressure column is fixed to the mounting plate
  • the mounting plate is connected with a telescopic rod, and the telescopic rod is connected with the base plate.
  • the telescopic rod includes a sleeve and a connecting rod, the sleeve is connected with the mounting plate, and the connecting rod is connected with the base plate, and the sleeve and the connecting rod are provided between spring.
  • the surface of the substrate is provided with a guide groove
  • both the first clamping jaw and the second clamping jaw are provided with a guide protrusion matching the guide groove.
  • the transmission tooth is mounted on the base plate through a pin shaft.
  • the clamping drive mechanism is a clamping cylinder, the clamping cylinder is fixed to the base plate, and the push rod of the clamping cylinder is connected with the first clamping jaw.
  • the cross section of the first transmission tube, the cross section of the second transmission tube, the cross section of the first transmission rod and the cross section of the second transmission rod are all regular quadrilaterals.
  • the clamping mechanism of the present invention includes a first clamping jaw, a second clamping jaw, and a clamping drive mechanism that drives the first clamping jaw and the second clamping jaw to approach each other.
  • the clamping drive mechanism drives the first clamping jaw to the second clamping jaw Approaching, the first clamping jaw drives the first transmission tube to move, the first transmission tube drives the transmission tooth to rotate, the transmission tooth drives the second transmission tube to move, and the second transmission tube drives the second clamping jaw to approach the first clamping jaw, thereby clamping At the place to be inspected, it is conducive to the inspection of the weld by the flaw detection head;
  • the positioning mechanism of the utility model includes a telescopic rod, a mounting plate and a pressure column.
  • the mounting plate is equipped with a flaw detection head. Both sides of the flaw detection head are provided with pressure columns.
  • the pressure column is fixed on the mounting plate, and the mounting plate is connected with the telescopic rod. , So as to ensure the distance between the inspection head and the weld to be inspected, and ensure the reliability of the inspection.
  • Figure 1 is a schematic diagram of the structure of the utility model
  • Figure 2 is a cross-sectional view of the telescopic rod of the present invention.
  • Base plate 1 guide groove 11, clamping mechanism 2, first clamping jaw 21, second clamping jaw 22, clamping cylinder 23, first transmission tube 24, first transmission rod 25, second transmission tube 26, second transmission
  • the clamping mechanism 2 and the positioning mechanism 3 are both installed On the substrate 1;
  • the clamping mechanism 2 includes a first clamping jaw 21, a second clamping jaw 22, and a clamping drive mechanism that drives the first clamping jaw 21 and the second clamping jaw 22 to approach each other.
  • a first transmission is provided between the two clamping jaws. Shaft and a second transmission shaft, the first transmission shaft includes a first transmission tube 24 and a first transmission rod 25, the first transmission tube 24 is sleeved on the first transmission rod 25, and the first transmission tube 24 and the first transmission rod 25 are relatively stopped, the first transmission tube 24 is fixed to the first clamping jaw 21, and the first transmission rod 25 is fixed to the second clamping jaw 22;
  • the second transmission shaft includes a second transmission tube 26 and the second transmission rod 27, the second transmission tube 26 is sleeved on the second transmission rod 27, and the second transmission tube 26 is connected to the second transmission rod 27.
  • the second transmission rod 27 is relatively stopped, the second transmission tube 26 is fixed to the second clamping jaw 22, the second transmission rod 27 is fixed to the first clamping jaw 21, the first transmission tube 24 and the second
  • the transmission tubes 26 are meshed with the transmission teeth 28;
  • the positioning mechanism 3 includes a telescopic rod 31, a mounting plate 32, and a pressure column 33.
  • a flaw detection head 34 is installed on the mounting plate 32.
  • a pressure column 33 is provided on both sides of the flaw detection head 34.
  • the column 33 is fixed to the mounting plate 32, the mounting plate 32 is connected to a telescopic rod 31, and the telescopic rod 31 is connected to the base plate 1.
  • the telescopic rod 31 includes a sleeve 311 and a connecting rod 312, the sleeve 311 is connected to the mounting plate 32, and the connecting rod 312 is connected to the base plate 1, the sleeve 311 and the connecting rod A spring 313 is provided between 312.
  • a limit structure is provided between the connecting rod and the sleeve to limit the separation of the connecting rod and the sleeve.
  • the surface of the base plate 1 is provided with a guiding groove 11, and the first clamping jaw 21 and the second clamping jaw 22 are both provided with a guiding protrusion 29 matching the guiding groove 11.
  • the transmission tooth 28 is mounted on the base plate 1 through a pin shaft.
  • the clamping drive mechanism is a clamping cylinder 23, the clamping cylinder 23 is fixed to the base plate 1, and the push rod of the clamping cylinder 23 is connected with the first clamping jaw 21.
  • the cross section of the first transmission tube 24, the cross section of the second transmission tube 26, the cross section of the first transmission rod 25 and the cross section of the second transmission rod 27 are all regular quadrilaterals.
  • the working principle of the utility model is as follows.
  • the clamping cylinder drives the first clamping jaw to approach the second clamping jaw, the first clamping jaw drives the first transmission tube to move, the first transmission tube drives the transmission tooth to rotate, and the transmission tooth drives the second transmission tube.
  • the second transmission tube drives the second clamping jaws to approach the first clamping jaws, so that the first clamping jaws and the second clamping jaws are close to each other to be clamped at the inspected place.
  • the inspection head is installed on the mounting plate, and the mounting plate resists.
  • the pressure column conflicts with the inspected object, so as to ensure the distance between the flaw detection head and the weld to be inspected, and ensure the reliability of the inspection.

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
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  • Architecture (AREA)
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  • Crystallography & Structural Chemistry (AREA)
  • Optics & Photonics (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
  • Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)

Abstract

A welding seam detection and positioning fixture, comprising a substrate (1), a clamping mechanism (2) and a positioning mechanism (3), wherein the clamping mechanism and the positioning mechanism are both installed on the substrate; the clamping mechanism comprises a first clamping jaw (21), a second clamping jaw (22) and a clamping drive mechanism that drives the first clamping jaw and the second clamping jaw to approach each other, a first transmission shaft and a second transmission shaft are provided between the two clamping jaws, the first transmission shaft comprises a first transmission tube (24) and a first transmission rod (25), the first transmission tube is sleeved on the first transmission rod, and the first transmission tube and the first transmission rod stop rotating relative to each other, the first transmission tube is fixed to the first clamping jaw, and the first transmission rod is fixed to the second clamping jaw. The fixture is clamped at the detection place, which is advantageous for a flaw detection head to perform detection, ensures the distance between the flaw detection head and a welding seam to be detected, and ensures the reliability of the detection.

Description

焊缝检测定位夹具Welding seam detection and positioning fixture 技术领域Technical field
本实用新型属于焊缝检测技术领域，特别是涉及一种焊缝检测定位夹具。The utility model belongs to the technical field of welding seam detection, in particular to a welding seam detection positioning fixture.
背景技术Background technique
在桥梁钢结构制造中，由于受到钢材料自身的限制，建设桥梁过程中需要进行梁段间拼接，这样就形成了焊缝。钢结构桥梁中的焊接，作为钢结构桥梁最重要的工艺之一，目前仍然存在一些问题，例如：焊缝尺寸不正确、未焊透、有裂纹、焊瘤、气孔、焊件断裂和变形等。In the manufacture of bridge steel structure, due to the limitation of the steel material itself, it is necessary to splice between beam segments during the construction of the bridge, thus forming a weld. Welding in steel structure bridges, as one of the most important processes of steel structure bridges, still has some problems, such as: incorrect weld size, incomplete penetration, cracks, weld bead, porosity, weldment fracture and deformation, etc. .
探伤也叫“无损检测”，就是检查金属表面及焊缝中有没有缺陷的技术。常用的焊缝内部缺陷无损检测技术包括超声波检测、射线检测，通常通过由检测人员拿着探伤装置在焊缝表面检测，但是通过人工操作无法稳定的定位焊缝的位置，导致检测的准确性达不到预期的效果。Flaw detection is also called "non-destructive testing", which is a technique to check whether there are defects in metal surfaces and welds. Commonly used non-destructive testing techniques for internal defects of welds include ultrasonic testing and radiographic testing. They are usually inspected on the surface of the weld by the inspector holding the flaw detection device. However, the position of the weld cannot be stabilized by manual operation, resulting in the accuracy of the inspection. Unexpected results.
实用新型内容Utility model content
本实用新型主要解决的技术问题是提供一种焊缝检测定位夹具，夹持于被检测处，利于探伤头进行检测，确保探伤头与被检测焊缝之间的距离，保证检测的可靠性。The main technical problem solved by the utility model is to provide a welding seam detection positioning fixture, which is clamped at the inspected position, which facilitates the inspection of the flaw detection head, ensures the distance between the flaw detection head and the inspected welding seam, and ensures the reliability of the inspection.
为解决上述技术问题，本实用新型采用的一个技术方案是：一种焊缝检测定位夹具，包括基板、夹持机构和定位机构，所述夹持机构和所述定位机构皆安装于所述基板；In order to solve the above technical problems, a technical solution adopted by the present utility model is: a welding seam detection and positioning fixture, including a substrate, a clamping mechanism and a positioning mechanism, the clamping mechanism and the positioning mechanism are both mounted on the substrate ；
所述夹持机构包括第一夹爪、第二夹爪和驱动第一夹爪和第二夹爪相互靠近的夹紧驱动机构，两个夹爪之间设有第一传动轴和第二传动轴，所述第一传动轴包括第一传动管和第一传动杆，所述第一传动管套于所述第一传动杆，且所述第一传动管与所述第一传动杆相对止转，所述第一传动管与第一夹爪固定，所述第一传动杆与第二夹爪固定；The clamping mechanism includes a first clamping jaw, a second clamping jaw, and a clamping drive mechanism for driving the first clamping jaw and the second clamping jaw to approach each other, and a first transmission shaft and a second transmission are arranged between the two clamping jaws. Shaft, the first transmission shaft includes a first transmission tube and a first transmission rod, the first transmission tube is sleeved on the first transmission rod, and the first transmission tube is opposite to the first transmission rod Turn, the first transmission tube is fixed to the first clamping jaw, and the first transmission rod is fixed to the second clamping jaw;
所述第二传动轴包括第二传动管和所述第二传动杆，所述第二传动管套于所述第二传动杆，且所述第二传动管与所述第二传动杆相对止转，所述第 二传动管与第二夹爪固定，所述第二传动杆与第一夹爪固定，所述第一传动管和所述第二传动管皆与传动齿啮合；The second transmission shaft includes a second transmission tube and the second transmission rod, the second transmission tube is sleeved on the second transmission rod, and the second transmission tube is opposite to the second transmission rod. Turn, the second transmission tube is fixed to the second clamping jaw, the second transmission rod is fixed to the first clamping jaw, and the first transmission tube and the second transmission tube are both meshed with transmission teeth;
所述定位机构包括伸缩杆、安装板和抵压柱，所述安装板上安装有探伤头，所述探伤头的两侧设有抵压柱，所述抵压柱固定于所述安装板，所述安装板与伸缩杆连接，所述伸缩杆与所述基板连接。The positioning mechanism includes a telescopic rod, a mounting plate and a pressure column, the mounting plate is equipped with a flaw detection head, two sides of the flaw detection head are provided with pressure columns, and the pressure column is fixed to the mounting plate, The mounting plate is connected with a telescopic rod, and the telescopic rod is connected with the base plate.
进一步地说，所述伸缩杆包括套筒和连接杆，所述套筒与所述安装板连接，且所述连接杆与所述基板连接，所述套筒和所述连接杆之间设有弹簧。Furthermore, the telescopic rod includes a sleeve and a connecting rod, the sleeve is connected with the mounting plate, and the connecting rod is connected with the base plate, and the sleeve and the connecting rod are provided between spring.
进一步地说，所述基板的表面设有导向槽，所述第一夹爪和所述第二夹爪皆设有与所述导向槽相匹配的导向凸起。Furthermore, the surface of the substrate is provided with a guide groove, and both the first clamping jaw and the second clamping jaw are provided with a guide protrusion matching the guide groove.
进一步地说，所述传动齿通过销轴安装于所述基板。Furthermore, the transmission tooth is mounted on the base plate through a pin shaft.
进一步地说，所述夹紧驱动机构为夹紧气缸，所述夹紧气缸固定于所述基板，所述夹紧气缸的推杆与所述第一夹爪连接。Furthermore, the clamping drive mechanism is a clamping cylinder, the clamping cylinder is fixed to the base plate, and the push rod of the clamping cylinder is connected with the first clamping jaw.
进一步地说，所述第一传动管的横截面、所述第二传动管的横截面、所述第一传动杆的横截面和所述第二传动杆的横截面皆为正四边形。Furthermore, the cross section of the first transmission tube, the cross section of the second transmission tube, the cross section of the first transmission rod and the cross section of the second transmission rod are all regular quadrilaterals.
本实用新型的有益效果至少具有以下几点：The beneficial effects of the utility model have at least the following points:
本实用新型的夹持机构包括第一夹爪、第二夹爪和驱动第一夹爪和第二夹爪相互靠近的夹紧驱动机构，夹紧驱动机构驱动第一夹爪向第二夹爪靠近，第一夹爪带动第一传动管移动，第一传动管带动传动齿转动，传动齿带动第二传动管移动，第二传动管带动第二夹爪向第一夹爪靠近，从而夹持于被检测处，利于探伤头对焊缝进行检测；The clamping mechanism of the present invention includes a first clamping jaw, a second clamping jaw, and a clamping drive mechanism that drives the first clamping jaw and the second clamping jaw to approach each other. The clamping drive mechanism drives the first clamping jaw to the second clamping jaw Approaching, the first clamping jaw drives the first transmission tube to move, the first transmission tube drives the transmission tooth to rotate, the transmission tooth drives the second transmission tube to move, and the second transmission tube drives the second clamping jaw to approach the first clamping jaw, thereby clamping At the place to be inspected, it is conducive to the inspection of the weld by the flaw detection head;
本实用新型的定位机构包括伸缩杆、安装板和抵压柱，安装板上安装有探伤头，探伤头的两侧设有抵压柱，抵压柱固定于安装板，安装板与伸缩杆连接，从而确保探伤头与被检测焊缝之间的距离，保证检测的可靠性。The positioning mechanism of the utility model includes a telescopic rod, a mounting plate and a pressure column. The mounting plate is equipped with a flaw detection head. Both sides of the flaw detection head are provided with pressure columns. The pressure column is fixed on the mounting plate, and the mounting plate is connected with the telescopic rod. , So as to ensure the distance between the inspection head and the weld to be inspected, and ensure the reliability of the inspection.
附图说明Description of the drawings
图1是本实用新型的结构示意图；Figure 1 is a schematic diagram of the structure of the utility model;
图2是本实用新型的伸缩杆的剖视图；Figure 2 is a cross-sectional view of the telescopic rod of the present invention;
附图中各部分标记如下：The parts in the drawings are marked as follows:
基板1、导向槽11、夹持机构2、第一夹爪21、第二夹爪22、夹紧气缸23、第一传动管24、第一传动杆25、第二传动管26、第二传动杆27、传动齿28、导向凸起29、定位机构3、伸缩杆31、套筒311、连接杆312、弹簧313、安装板32、抵压柱33和探伤头34。 Base plate 1, guide groove 11, clamping mechanism 2, first clamping jaw 21, second clamping jaw 22, clamping cylinder 23, first transmission tube 24, first transmission rod 25, second transmission tube 26, second transmission The rod 27, the transmission tooth 28, the guide protrusion 29, the positioning mechanism 3, the telescopic rod 31, the sleeve 311, the connecting rod 312, the spring 313, the mounting plate 32, the pressure column 33 and the flaw detection head 34.
具体实施方式Detailed ways
下面结合附图对本实用新型的较佳实施例进行详细阐述，以使本实用新型的优点和特征能更易于被本领域技术人员理解，从而对本实用新型的保护范围做出更为清楚明确的界定。The preferred embodiments of the utility model will be described in detail below in conjunction with the accompanying drawings, so that the advantages and features of the utility model can be more easily understood by those skilled in the art, so as to make a clearer and clearer definition of the scope of protection of the utility model. .
实施例：一种焊缝检测定位夹具，如图1-图2所示，本实用新型包括基板1、夹持机构2和定位机构3，所述夹持机构2和所述定位机构3皆安装于所述基板1；Example: A welding seam detection positioning fixture, as shown in Figures 1-2, the utility model includes a substrate 1, a clamping mechanism 2 and a positioning mechanism 3. The clamping mechanism 2 and the positioning mechanism 3 are both installed On the substrate 1;
所述夹持机构2包括第一夹爪21、第二夹爪22和驱动第一夹爪21和第二夹爪22相互靠近的夹紧驱动机构，两个夹爪之间设有第一传动轴和第二传动轴，所述第一传动轴包括第一传动管24和第一传动杆25，所述第一传动管24套于所述第一传动杆25，且所述第一传动管24与所述第一传动杆25相对止转，所述第一传动管24与第一夹爪21固定，所述第一传动杆25与第二夹爪22固定；The clamping mechanism 2 includes a first clamping jaw 21, a second clamping jaw 22, and a clamping drive mechanism that drives the first clamping jaw 21 and the second clamping jaw 22 to approach each other. A first transmission is provided between the two clamping jaws. Shaft and a second transmission shaft, the first transmission shaft includes a first transmission tube 24 and a first transmission rod 25, the first transmission tube 24 is sleeved on the first transmission rod 25, and the first transmission tube 24 and the first transmission rod 25 are relatively stopped, the first transmission tube 24 is fixed to the first clamping jaw 21, and the first transmission rod 25 is fixed to the second clamping jaw 22;
所述第二传动轴包括第二传动管26和所述第二传动杆27，所述第二传动管26套于所述第二传动杆27，且所述第二传动管26与所述第二传动杆27相对止转，所述第二传动管26与第二夹爪22固定，所述第二传动杆27与第一夹爪21固定，所述第一传动管24和所述第二传动管26皆与传动齿28啮合；The second transmission shaft includes a second transmission tube 26 and the second transmission rod 27, the second transmission tube 26 is sleeved on the second transmission rod 27, and the second transmission tube 26 is connected to the second transmission rod 27. The second transmission rod 27 is relatively stopped, the second transmission tube 26 is fixed to the second clamping jaw 22, the second transmission rod 27 is fixed to the first clamping jaw 21, the first transmission tube 24 and the second The transmission tubes 26 are meshed with the transmission teeth 28;
所述定位机构3包括伸缩杆31、安装板32和抵压柱33，所述安装板32上安装有探伤头34，所述探伤头34的两侧设有抵压柱33，所述抵压柱33固定于所述安装板32，所述安装板32与伸缩杆31连接，所述伸缩杆31与所述基板1连接。The positioning mechanism 3 includes a telescopic rod 31, a mounting plate 32, and a pressure column 33. A flaw detection head 34 is installed on the mounting plate 32. A pressure column 33 is provided on both sides of the flaw detection head 34. The column 33 is fixed to the mounting plate 32, the mounting plate 32 is connected to a telescopic rod 31, and the telescopic rod 31 is connected to the base plate 1.
所述伸缩杆31包括套筒311和连接杆312，所述套筒311与所述安装板32连接，且所述连接杆312与所述基板1连接，所述套筒311和所述连接杆 312之间设有弹簧313。The telescopic rod 31 includes a sleeve 311 and a connecting rod 312, the sleeve 311 is connected to the mounting plate 32, and the connecting rod 312 is connected to the base plate 1, the sleeve 311 and the connecting rod A spring 313 is provided between 312.
所述连接杆和所述套筒之间设有限位结构以限制连接杆和套筒分离。A limit structure is provided between the connecting rod and the sleeve to limit the separation of the connecting rod and the sleeve.
所述基板1的表面设有导向槽11，所述第一夹爪21和所述第二夹爪22皆设有与所述导向槽11相匹配的导向凸起29。The surface of the base plate 1 is provided with a guiding groove 11, and the first clamping jaw 21 and the second clamping jaw 22 are both provided with a guiding protrusion 29 matching the guiding groove 11.
所述传动齿28通过销轴安装于所述基板1。The transmission tooth 28 is mounted on the base plate 1 through a pin shaft.
所述夹紧驱动机构为夹紧气缸23，所述夹紧气缸23固定于所述基板1，所述夹紧气缸23的推杆与所述第一夹爪21连接。The clamping drive mechanism is a clamping cylinder 23, the clamping cylinder 23 is fixed to the base plate 1, and the push rod of the clamping cylinder 23 is connected with the first clamping jaw 21.
所述第一传动管24的横截面、所述第二传动管26的横截面、所述第一传动杆25的横截面和所述第二传动杆27的横截面皆为正四边形。The cross section of the first transmission tube 24, the cross section of the second transmission tube 26, the cross section of the first transmission rod 25 and the cross section of the second transmission rod 27 are all regular quadrilaterals.
本实用新型的工作原理如下，夹紧气缸驱动第一夹爪向第二夹爪靠近，第一夹爪带动第一传动管移动，第一传动管带动传动齿转动，传动齿带动第二传动管移动，第二传动管带动第二夹爪向第一夹爪靠近，从而实现第一夹爪和第二夹爪相互靠近以夹持于被检测处，探伤头安装于安装板，安装板的抵压柱与被检测物抵触，从而确保探伤头与被检测焊缝之间的距离，保证检测的可靠性。The working principle of the utility model is as follows. The clamping cylinder drives the first clamping jaw to approach the second clamping jaw, the first clamping jaw drives the first transmission tube to move, the first transmission tube drives the transmission tooth to rotate, and the transmission tooth drives the second transmission tube. Move, the second transmission tube drives the second clamping jaws to approach the first clamping jaws, so that the first clamping jaws and the second clamping jaws are close to each other to be clamped at the inspected place. The inspection head is installed on the mounting plate, and the mounting plate resists. The pressure column conflicts with the inspected object, so as to ensure the distance between the flaw detection head and the weld to be inspected, and ensure the reliability of the inspection.
以上所述仅为本实用新型的实施例，并非因此限制本实用新型的专利范围，凡是利用本实用新型说明书及附图内容所作的等效结构变换，或直接或间接运用在其他相关的技术领域，均同理包括在本实用新型的专利保护范围内。The above are only the embodiments of the present utility model, and do not therefore limit the scope of the present utility model. Any equivalent structural transformation made using the content of the utility model description and drawings, or directly or indirectly applied to other related technical fields , The same reason is included in the scope of patent protection of this utility model.

Claims (6)

  1. 一种焊缝检测定位夹具，其特征在于：包括基板(1)、夹持机构(2)和定位机构(3)，所述夹持机构和所述定位机构皆安装于所述基板；A welding seam detection and positioning fixture, which is characterized in that it comprises a base plate (1), a clamping mechanism (2) and a positioning mechanism (3), and the clamping mechanism and the positioning mechanism are both mounted on the base plate;
    所述夹持机构包括第一夹爪(21)、第二夹爪(22)和驱动第一夹爪和第二夹爪相互靠近的夹紧驱动机构，两个夹爪之间设有第一传动轴和第二传动轴，所述第一传动轴包括第一传动管(24)和第一传动杆(25)，所述第一传动管套于所述第一传动杆，且所述第一传动管与所述第一传动杆相对止转，所述第一传动管与第一夹爪固定，所述第一传动杆与第二夹爪固定；The clamping mechanism includes a first clamping jaw (21), a second clamping jaw (22) and a clamping drive mechanism that drives the first clamping jaw and the second clamping jaw to approach each other, and a first clamping jaw is provided between the two clamping jaws. A transmission shaft and a second transmission shaft, the first transmission shaft includes a first transmission tube (24) and a first transmission rod (25), the first transmission tube is sleeved on the first transmission rod, and the first transmission shaft A transmission tube and the first transmission rod are relatively stopped, the first transmission tube is fixed with the first clamping jaw, and the first transmission rod is fixed with the second clamping jaw;
    所述第二传动轴包括第二传动管(26)和所述第二传动杆(27)，所述第二传动管套于所述第二传动杆，且所述第二传动管与所述第二传动杆相对止转，所述第二传动管与第二夹爪固定，所述第二传动杆与第一夹爪固定，所述第一传动管和所述第二传动管皆与传动齿(28)啮合；The second transmission shaft includes a second transmission tube (26) and the second transmission rod (27), the second transmission tube is sleeved on the second transmission rod, and the second transmission tube is connected to the second transmission rod. The second transmission rod is relatively stopped, the second transmission tube is fixed with the second clamping jaw, the second transmission rod is fixed with the first clamping jaw, and the first transmission tube and the second transmission tube are both connected with the transmission Tooth (28) meshing;
    所述定位机构包括伸缩杆(31)、安装板(32)和抵压柱(33)，所述安装板上安装有探伤头(34)，所述探伤头的两侧设有抵压柱，所述抵压柱固定于所述安装板，所述安装板与伸缩杆连接，所述伸缩杆与所述基板连接。The positioning mechanism includes a telescopic rod (31), a mounting plate (32), and a pressure column (33). A flaw detection head (34) is installed on the mounting plate, and pressure columns are provided on both sides of the flaw detection head. The pressing column is fixed to the mounting plate, the mounting plate is connected with a telescopic rod, and the telescopic rod is connected with the base plate.
  2. 根据权利要求1所述的焊缝检测定位夹具，其特征在于：所述伸缩杆包括套筒(311)和连接杆(312)，所述套筒与所述安装板连接，且所述连接杆与所述基板连接，所述套筒和所述连接杆之间设有弹簧(313)。The welding seam detection and positioning fixture according to claim 1, wherein the telescopic rod includes a sleeve (311) and a connecting rod (312), the sleeve is connected to the mounting plate, and the connecting rod Connected with the base plate, a spring (313) is arranged between the sleeve and the connecting rod.
  3. 根据权利要求1所述的焊缝检测定位夹具，其特征在于：所述基板的表面设有导向槽(11)，所述第一夹爪和所述第二夹爪皆设有与所述导向槽相匹配的导向凸起(29)。The welding seam detection and positioning fixture according to claim 1, characterized in that: the surface of the substrate is provided with a guide groove (11), and the first clamping jaw and the second clamping jaw are both provided with the guide Guide protrusions (29) that match the grooves.
  4. 根据权利要求1所述的焊缝检测定位夹具，其特征在于：所述传动齿通过销轴安装于所述基板。The welding seam detection and positioning fixture according to claim 1, wherein the transmission tooth is mounted on the base plate through a pin shaft.
  5. 根据权利要求1所述的焊缝检测定位夹具，其特征在于：所述夹紧驱动机构为夹紧气缸(23)，所述夹紧气缸固定于所述基板，所述夹紧气缸的推杆与所述第一夹爪连接。The welding seam detection positioning fixture according to claim 1, characterized in that: the clamping drive mechanism is a clamping cylinder (23), the clamping cylinder is fixed to the base plate, and the push rod of the clamping cylinder Connected with the first clamping jaw.
  6. 根据权利要求1所述的焊缝检测定位夹具，其特征在于：所述第一传动管的横截面、所述第二传动管的横截面、所述第一传动杆的横截面和所述第二传动杆的横截面皆为正四边形。The welding seam detection and positioning fixture according to claim 1, wherein: the cross section of the first transmission tube, the cross section of the second transmission tube, the cross section of the first transmission rod and the first transmission rod The cross-sections of the two transmission rods are all regular quadrilaterals.
PCT/CN2020/086883 2019-12-20 2020-04-25 Welding seam detection and positioning fixture WO2021120478A1 (en)

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