阅读说明：本技术 一种基于喷水式超声检测手段的喷头夹具 (Spray head clamp based on water spraying type ultrasonic detection means ) 是由 宋国荣 贾利 吕炎 肖婷 王慧园 赵岩 于 2020-11-19 设计创作，主要内容包括：本发明公开了一种基于喷水式超声检测手段的喷头夹具,定位法兰盘通过定位孔用以连接超声检测机械臂末端手腕,控制喷头整体携带超声探头跟随机械臂运动扫查；法兰盘和顶丝的配合,用以超声探头的夹紧,保证其声束方向平行于水柱方向；下端设置导流口,判断存储仓内部水流是否满仓,避免仓中存在空气对声束造成干扰。存储仓为整个喷头夹具的核心部件,用来引入水流及喷出耦合水柱。存储仓侧面注水口与水管连接,将水流引入存储仓；存储仓内嵌隔水板控制其内部水流方向,并对水流起到缓冲作用,避免水中产生气泡产生,保证平稳水柱从仓底喷出,提供超声检测喷水式水耦合条件,以保证整个仓体处于密封状态。(The invention discloses a spray head clamp based on a water-spraying type ultrasonic detection means.A positioning flange plate is used for connecting a wrist at the tail end of an ultrasonic detection mechanical arm through a positioning hole, and the spray head is controlled to integrally carry an ultrasonic probe to scan along with the movement of the mechanical arm; the flange plate is matched with the jackscrew and used for clamping the ultrasonic probe so as to ensure that the sound beam direction of the ultrasonic probe is parallel to the water column direction; the lower extreme sets up the water conservancy diversion mouth, judges whether the inside rivers of storage storehouse are full storehouse, avoids having the air to cause the interference to the acoustic beam in the storehouse. The storage bin is a core part of the whole spray head clamp and is used for introducing water flow and spraying out the coupled water column. The water injection port on the side surface of the storage bin is connected with a water pipe to introduce water flow into the storage bin; the embedded water-stop sheet in the storage bin controls the direction of the water flow inside the storage bin, and plays a role in buffering the water flow, so that bubbles generated in water are avoided, stable water columns are guaranteed to be sprayed out from the bin bottom, an ultrasonic detection water-spraying type water coupling condition is provided, and the whole bin body is guaranteed to be in a sealing state.)

1. The utility model provides a shower nozzle anchor clamps based on water spray formula ultrasonic testing means which characterized in that: the positioning flange plate (1), the storage bin (2) and the water-stop plate (3) are assembly parts of the nozzle clamp body, and the flange positioning hole (4) is used for connecting a wrist at the tail end of the ultrasonic detection mechanical arm; the bin body positioning hole (5) is connected with the storage bin (2) in a positioning and assembling way, and a waterproof rubber gasket is clamped between the bin body positioning hole and the storage bin; the probe hole (6) is used for clamping the ultrasonic probe and is clamped through a jackscrew (8); the diversion port (7) is arranged at the upper end of the flange plate and is externally connected with a water pipe for judging the water flow state in the storage bin (2); the water injection port (9) injects water into the storage bin (2) under the pressure of the water pump; the rubber gasket (10) is used for assembling the storage bin (2) to ensure the water tightness; the bottom cover (12) is used for being assembled and connected with the water outlet of the bottom bin (11) and controlling the opening and closing of the water outlet (11);

the positioning flange plate (1) is positioned below the wrist at the tail end of the mechanical arm and is in threaded fit connection through a standard M5 bolt; the storage bin (2) is positioned below the positioning flange plate (1) and is in threaded fit connection through a standard M3 bolt; the water-stop sheet (3) is positioned inside the bottom bin (11) and is connected in a matching way through internal and external threads; the bottom bin (11) is positioned below the water-stop sheet (2), the middle of the bottom bin is provided with a rubber gasket (10), and the bottom bin and the rubber gasket are connected in a threaded fit manner through a standard M3 bolt; the bottom cover (12) is positioned below the bottom bin (11) and is in matched connection through internal and external threads; the jackscrew (8) is located the locating flange dish (1) side, carries out screw-thread fit connection through standard M3 bolt.

2. The nozzle clamp based on the water-spraying ultrasonic detection means as claimed in claim 1, wherein: the positioning flange plate (1) is connected with the tail end wrist of the mechanical arm in a threaded fit mode through a standard M5 bolt.

3. The nozzle clamp based on the water-spraying ultrasonic detection means as claimed in claim 1, wherein: the positioning flange plate (1) is in threaded fit connection with the storage bin (2) through a standard M3 bolt, and the conical angle of the lower part of the storage bin (2) is 90 degrees.

4. The nozzle clamp based on the water-spraying ultrasonic detection means as claimed in claim 1, wherein: the positioning flange plate (1) and the jackscrew (8) are clamped in a threaded fit mode through a standard M3 long bolt, and the conical angle of the conical surface of the water-stop plate (3) is 50 degrees.

5. The nozzle clamp based on the water-spraying ultrasonic detection means as claimed in claim 1, wherein: the ultrasonic probe is connected with the probe hole (6) in a clamping way through a jackscrew (8), and the end part of the jackscrew (8) is provided with a rubber block.

6. The nozzle clamp based on the water-spraying ultrasonic detection means as claimed in claim 1, wherein: the water-stop sheet (3) is connected with the bottom bin (11) through the matching of internal and external threads.

7. The nozzle clamp based on the water-spraying ultrasonic detection means as claimed in claim 1, wherein: the storage bin (2) and the bottom bin (11) are in threaded fit connection through a standard M3 bolt, a rubber gasket (10) is clamped in the middle, and the bottom bin (11) is provided with a standard external thread.

8. The nozzle clamp based on the water-spraying ultrasonic detection means as claimed in claim 1, wherein: the water outlet of the bottom bin (11) is matched and connected with the bottom cover (12) through internal and external threads, and the bottom cover (12) is provided with standard internal threads.

9. The nozzle clamp based on the water-spraying ultrasonic detection means as claimed in claim 1, wherein: the flow guide port (7) is connected with the peripheral water pipe in a direct insertion mode.

10. The nozzle clamp based on the water-spraying ultrasonic detection means as claimed in claim 1, wherein: the water injection port (9) is connected with the peripheral water pipe in a direct insertion mode.

Technical Field

The invention relates to a water column nozzle clamp based on a water-spraying ultrasonic detection means, which is mainly used for water coupling of an ultrasonic detection system of a large-sized workpiece and belongs to the technical field of nondestructive detection of structural materials.

Background

The most common bearing structure of large-scale high-end equipment such as aerospace equipment, ocean engineering equipment and the like is affected by impact load and self defects in the long-term service process to generate tiny cracks, the cracks can gradually extend along with the development of time, equipment failure can be caused finally, huge loss is caused, and the detection of the tiny cracks is particularly important in the field of high-end equipment. Crack defects in the structural equipment are discovered as early as possible and repaired, so that a lot of major accidents can be avoided. In the health detection of large-scale structural materials, how to discover the tiny cracks as early as possible is an extremely important problem, and the crack defect nondestructive detection in equipment structures can be realized by providing a propagation medium for an ultrasonic nondestructive detection means through a water coupling system.

The traditional ultrasonic detection technology mostly adopts a water immersion type ultrasonic detection system, the system is provided with a water tank for placing a detected workpiece, and the whole workpiece is submerged in water, so that an ultrasonic probe detects the workpiece underwater, and the stable excitation and receiving of ultrasonic sound wave signals can be ensured. However, the water immersion type ultrasonic detection system is mostly a small structural component when facing a detected object, a large enough water tank must be configured for a large detected object, the cost is high, the operation is complicated, and the carrying process of a large workpiece has high risk, so that the requirements of people are difficult to meet. Therefore, an ultrasonic detection water coupling system which is low in cost, simple to operate and high in safety coefficient is sought, and great theoretical significance and engineering practical value are achieved.

Disclosure of Invention

The invention aims to provide a spray head clamp based on a water-spraying type ultrasonic detection means, which has the advantages of low cost, simple structure, simplicity in operation, high operation safety coefficient and the like, and can completely meet the requirements of experimental analysis and engineering application.

In order to achieve the purpose, the invention adopts the technical scheme that the spray head clamp based on a water-spraying type ultrasonic detection means is provided, the spray head mainly comprises a positioning flange plate 1, a storage bin 2 and a water-stop plate 3, and the spray head clamp comprises the following components: the device comprises a flange positioning hole 4, a bin body positioning hole 5, a probe hole 6, a flow guide port 7, a jackscrew 8, a water injection port 9, a rubber gasket 10, a bottom bin 11 and a bottom cover 12.

The overall assembly of the spray head fixture design is shown in fig. 1, and the internal structure thereof is shown in fig. 2.

The positioning flange plate 1 is provided with 8 flange positioning holes 4 which are mainly used for connecting the wrist at the tail end of the ultrasonic detection mechanical arm to be consistent with the wrist positioning holes at the tail end of the KUKA KR10-1420 mechanical arm used for experiments, and controlling the spray head to integrally carry an ultrasonic probe to scan along with the movement of the mechanical arm; the probe is clamped in the probe hole 6 and is further clamped through the jackscrew 8, so that the probe is prevented from falling off due to infirm clamping; the lower end of the positioning flange plate is provided with a flow guide opening 7 which can be externally connected with a water pipe to judge whether the water flow in the storage bin 2 is full, so that the interference of air in the bin on the ultrasonic sound beam is avoided; 3 storehouse body locating holes 5 are used for being connected with storage bin 2 location assembly. Probe hole 6 extends 2mm and carries out the reverse mould to the external diameter in to the storehouse, can further cushion water pressure, avoids the production of storehouse internal splash to guarantee whole storehouse body water proofness. The storage bin 2 is a core component of the whole spray head, is arranged at the bottom of the positioning flange plate 1, and is provided with a water injection port 9 on the side surface for connecting an external water pipe and injecting water into the bin body under the pressure of a water pump; the upper end of the positioning flange plate is provided with a flow guide port which is concentrically contacted and connected with a flow guide port 7 at the lower end of the positioning flange plate 1, and the water flow condition of the bin body is inspected in a matching way. The water-stop sheet 3 is embedded inside the storage bin 2 and used for controlling the direction of water flow in the bin body and buffering the water flow, so that bubbles generated in water are avoided and then the interference to ultrasonic signals is avoided.

The positioning flange plate 1 is in threaded fit connection with the wrist at the tail end of the mechanical arm through a standard M5 bolt;

the positioning flange plate 1 and the storage bin 2 are in threaded fit connection through a standard M3 bolt;

the positioning flange plate 1 and the jackscrew 8 are clamped in a threaded fit manner through a standard M3 long bolt;

the ultrasonic probe is connected with the probe hole 6 in a clamping manner through a jackscrew 8;

the water-stop sheet 3 is connected with the bottom bin 11 through the matching of internal and external threads;

the storage bin 2 and the bottom bin 11 are in threaded fit connection through a standard M3 bolt, and a rubber gasket 10 is clamped between the storage bin and the bottom bin;

the water outlet of the bottom bin 11 is matched and connected with the bottom cover 12 through internal and external threads;

the flow guide port 7 is connected with the peripheral water pipe in a direct insertion manner;

the water injection port 9 is connected with the peripheral water pipe in a direct insertion mode.

In order to ensure the integral water tightness and portability of the spray head clamp, the integral structure is made of aluminum alloy materials, and sealing rubber gaskets and rubber sleeves are arranged at all assembly joints. The design of the spray head has two types of water-stop sheets: common water-stop sheets and screen water-stop sheets. The effect is showing when ordinary water-stop sheet is less to water pump pressure, and nevertheless when great to water pump pressure, the too big water impact water-stop sheet of water pressure produces splash or bubble easily, so choose the screen cloth water-stop sheet for use and carry out hydraulic buffering, further stabilize storehouse body rivers state through the form of mesh, guarantee that the water column is steadily rush out. The design of two kinds of water-stop sheets with different styles eliminates signal interference caused by water splash and air bubbles under different water pressure states, and has the characteristics of light volume, low cost, convenient replacement and the like.

Drawings

FIG. 1 is a schematic view of the overall assembly of the showerhead fixture;

FIG. 2 is a schematic view of an internal structure of a common water-stop plate showerhead jig;

FIG. 3 is a front view of the spray head fixture;

FIG. 4 is a top view of the spray head fixture;

FIG. 5 is a schematic view of a generic and screen riser;

Detailed Description

Specific embodiments of the nozzle holder will be further described below.

A spray head clamp based on a water-spraying ultrasonic detection means comprises a positioning flange plate 1, a storage bin 2 and a water-stop plate 3 which are assembly parts of a spray head clamp main body, wherein a flange positioning hole 4 is used for connecting a wrist at the tail end of an ultrasonic detection mechanical arm; the bin body positioning hole 5 is connected with the storage bin 2 in a positioning and assembling way, and a waterproof rubber gasket is clamped between the bin body positioning hole and the storage bin; the probe hole 6 is used for clamping the ultrasonic probe and is clamped by a jackscrew 8; the diversion port 7 is arranged at the upper end of the flange plate and is externally connected with a water pipe for judging the water flow state in the storage bin 2; the water injection port 9 injects water into the storage bin 2 under the pressure of the water pump; the rubber gasket 10 is used for assembling the storage bin 2 to ensure water tightness; the bottom cover 12 is used for being assembled and connected with the water outlet of the bottom bin 11 and controlling the opening and closing of the water outlet 11;

the positioning flange plate 1 is positioned below the wrist at the tail end of the mechanical arm and is in threaded fit connection through a standard M5 bolt; the storage bin 2 is positioned below the positioning flange plate 1 and is in threaded fit connection through a standard M3 bolt; the water-stop sheet 3 is positioned inside the bottom bin 11 and is connected in a matching way through internal and external threads; the bottom bin 11 is positioned below the water-stop sheet 2, the middle of the bottom bin is provided with a rubber gasket 10, and the bottom bin is in threaded fit connection through a standard M3 bolt; the bottom cover 12 is positioned below the bottom bin 11 and is in matched connection through internal and external threads; the jackscrew 8 is located the locating flange 1 side, carries out screw-thread fit connection through standard M3 bolt. The positioning flange plate 1 is connected with the tail end wrist of the mechanical arm in a threaded fit mode through a standard M5 bolt. The positioning flange plate 1 and the storage bin 2 are in threaded fit connection through a standard M3 bolt, and the conical angle of the lower part of the storage bin 2 is 90 degrees. The positioning flange plate 1 and the jackscrew 8 are clamped in a threaded fit mode through a standard M3 long bolt, and the conical angle of the conical surface of the water-stop plate 3 is 50 degrees. The ultrasonic probe is connected with the probe hole 6 in a clamping mode through a jackscrew 8, and a rubber block is arranged at the end portion of the jackscrew 8. The water-stop sheet 3 is connected with the bottom bin 11 through the matching of internal and external threads. Storage bin 2 carries out screw-thread fit with end storehouse 11 through standard M3 bolt and is connected, and the centre presss from both sides and has rubber gasket 10, and end storehouse 11 is furnished with standard external screw thread. The water outlet of the bottom bin 11 is matched and connected with the bottom cover 12 through internal and external threads, and the bottom cover 12 is provided with standard internal threads. The flow guide opening 7 is connected with the peripheral water pipe in a direct insertion mode. The water injection port 9 is connected with the peripheral water pipe in a direct insertion mode.

Firstly, embedding a water-stop sheet 3 at the bottom of a storage bin 2 and packaging the water-stop sheet, connecting the water-stop sheet with a positioning flange 1 through 3M 3 bin body positioning holes 5 by bolts, and matching a rubber gasket in the middle to ensure the water tightness; then, the flange positioning hole 4 is matched and connected with a wrist positioning hole at the tail end of the KUKA mechanical arm, the ultrasonic detection probe with the periphery sleeved with the rubber sleeve is placed in the probe hole 6 and is further clamped through a jackscrew 8, and the probe is prevented from falling off in a working state; carry out the water injection to the storehouse body afterwards, connect peripheral water pipe through water filling port 9, provide water pressure by the water pump and to its water injection, should install bottom 11 at storehouse body lower extreme before the water injection, overflow until storehouse body upper portion water conservancy diversion mouth 7 when the water injection fractional time, open bottom 11 this moment, guarantee that whole storehouse body is in full water state, avoid inside to have the air to cause signal interference to ultrasonic testing.

The spray head clamp designed by the invention has the advantages of simple structure, flexible installation, lower cost and high reliability, and can meet the detection requirements of a water-spraying ultrasonic detection means.