Alloy casting detection device with tensile property detection function

Abstract

The invention discloses an alloy casting detection device with a tensile property detection function, and relates to the technical field of metal tensile testers, the detection device comprises a bottom table, a control panel, an ultrasonic detector, a dynamic mechanism, a tensile mechanism and a clamping mechanism, the dynamic mechanism comprises an assembly plate and a lock pin mechanism, the stretching mechanism comprises a side frame and a sliding table, each clamping mechanism comprises a wedge-shaped shell and assembling plates, one assembling plate is fixedly connected with the side frame, the other assembling plate is fixedly connected with the sliding table, the lock pin mechanism comprises an electric control lock pin, the electric control lock pin is fixedly connected with the wedge-shaped shell, and the side frame and the control panel are both fixedly connected with the bottom table. The ultrasonic detector is fixedly connected with the side frame, and the ultrasonic detector, the dynamic mechanism and the stretching mechanism are all connected with the control panel through electric signals. Tensile load is applied to the alloy casting, ultrasonic detection is carried out, the load stress direction is actively changed, torque load is applied, the actual working condition is simulated, and the detection accuracy is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of metal material tensile testing machines, and particularly to a testing device for alloy castings with a tensile property detection function. Background Art

[0002] A metal material tensile testing machine is an important device for obtaining the basic mechanical property parameters of materials, and can be used to measure indexes such as strength, plasticity, and stiffness. The device accurately applies a tensile load, synchronously collects force and deformation data, and combines standardized specimen preparation and testing processes, and finally outputs a series of quantitative indexes to characterize the ability of the material to resist tensile deformation and fracture. These mechanical property parameters are the basic basis for engineering structure design, material selection, quality control, and scientific research. In existing metal material tensile testing machines, mechanical property detection is mainly based on the application of a static axial tensile load, and the stress state of the material under actual working conditions is simulated through basic load calculation. However, in actual engineering environments, the loads borne by metal materials are often multi-directional composite loads. Due to technical limitations, existing tensile testing machines are difficult to effectively simulate complex working conditions, resulting in a certain deviation between the mechanical property data provided by them and the material properties under actual service conditions. Summary of the Invention

[0003] The purpose of the present invention is to provide a testing device for alloy castings with a tensile property detection function to solve the problems in the prior art.

[0004] To achieve the above purpose, the present invention provides the following technical solution: A testing device for alloy castings with a tensile property detection function includes a base table, a control panel, an ultrasonic detector, a dynamic mechanism, a tensile mechanism, and a clamping mechanism. The dynamic mechanism includes an assembly plate and a locking pin mechanism. The tensile mechanism includes a side frame and a sliding table. The clamping mechanism includes a wedge-shaped shell. There are two sets of assembly plates and clamping mechanisms. One set of assembly plates is fixedly connected to the side frame, and the other set of assembly plates is fixedly connected to the sliding table. The locking pin mechanism includes an electric control locking pin, and the electric control locking pin is fixedly connected to the wedge-shaped shell. The side frame and the control panel are both fixedly connected to the base table. The ultrasonic detector is fixedly connected to the side frame. The ultrasonic detector, the dynamic mechanism, and the tensile mechanism are all electrically connected to the control panel through electrical signals.

[0005] The present invention relates to a detection device for various mechanical property indexes of alloy casting materials under static axial tensile loads. The experimenter fixes both ends of the alloy casting on the clamping mechanisms respectively. One set of clamping mechanisms is fixed relative to the side frame through the assembly plate. An electric control signal is sent to the tensile mechanism through the control panel. The tensile mechanism drives the other set of clamping mechanisms to apply a static axial tensile load to the alloy casting. The ultrasonic detector is used to detect whether the stress state inside the metal of the alloy casting under the load is close to the load limit. At the same time, the torque state of the alloy casting when it is close to the load limit is recorded by the tensile mechanism, and the detection data signal is fed back to the control panel. The control panel actively feeds back a control signal to the dynamic mechanism to change the tensile load applied by the tensile mechanism to the alloy casting material in the static axial direction. The dynamic mechanism changes the load stress direction of the alloy casting to generate a helical torque load on the alloy casting, simulating the load tensile state of the alloy casting in the actual complex working conditions, making the detection data close to the actual state and improving the accuracy and rationality of the detection data.

[0006] Further, the dynamic mechanism further includes a torsion motor and a force dividing mechanism. The force dividing mechanism includes a housing and an inclination mechanism. The inclination mechanism includes a ball head rod. The locking pin mechanism further includes a tensile cylinder. The torsion motor is fixedly connected to the assembly plate. The output end of the torsion motor is fixedly connected to the housing. The output end of the tensile cylinder is fixedly connected to the ball head rod.

[0007] When performing a simulation of dynamic load on the clamped alloy casting, the control panel sends a control signal to the torsion motor. The torsion motor outputs a fixed-axis torque to the housing. By driving the housing to rotate around a fixed axis, the clamping mechanism is relatively fixed to the housing. The fixed-axis torque output by the torsion motor is converted into a helical torque load of the clamping mechanism on the alloy casting, and the force dividing mechanism changes the stress direction of the tensile load applied by the tensile mechanism to the alloy casting material in the static axial direction.

[0008] Further, the force dividing mechanism further includes a driving motor and a gear rod. There is a through hole on the housing. The driving motor is fixedly connected to the housing. The output end of the driving motor is fixedly connected to the gear rod. The gear rod is rotatably connected to the through hole. The inclination mechanism further includes a toothed disc. The gear rod is meshed with the tooth surface of the toothed disc. The torsion motor and the driving motor are both connected to the control panel through electric signals.

[0009] The control panel sends a control signal to the driving motor. The driving motor outputs a fixed-axis torque to the gear rod. Through the meshing of the tooth surface between the gear rod and the toothed disc, the gear rod transmits the torque to the toothed disc. The toothed disc is rotationally assembled with the arc-shaped body. By the rotation of the toothed disc, the inclination mechanism changes the stress direction of the tensile load applied by the tensile mechanism to the alloy casting material in the static axial direction.

[0010] Further, the tilting mechanism further includes an arc-shaped body and a spring cylinder. The arc-shaped body is fixedly connected to the housing. The gear disk is rotatably connected to the arc-shaped body. A sphere is provided on the ball head rod. A ball chute is provided on the gear disk. The sphere contacts the ball chute. The ball head rod is fixedly connected to the spring cylinder.

[0011] The gear disk is rotatably assembled with the arc-shaped body. The ball chute on the gear disk contacts the sphere. When the gear disk is driven to rotate by the output torque of the driving motor, and the gear disk drives the ball head rod to rotate, the sphere slides relatively in the ball chute. By driving the ball head rod to rotate through the gear disk, the direction of the tensile load applied axially in a static state by the stretching mechanism to the alloy casting material is changed.

[0012] Further, a threaded slide rail is provided on the arc-shaped body. The threaded slide rail is provided on the side of the arc-shaped body close to the gear disk. A sliding disk is provided on the spring cylinder. The sliding disk is provided at one end of the spring cylinder far from the ball head rod. The sliding disk is slidably connected to the threaded slide rail.

[0013] The ball head rod is slidably assembled between the sliding disk on the spring cylinder and the threaded slide rail. When the gear disk drives the ball head rod to rotate, as the ball head rod rotates around the gear disk, the threaded slide rail is arranged on the inner arc surface of the arc-shaped body. The inclination degree of the threaded slide rail at a position far from the center of the arc-shaped body is greater than the track inclination degree of the threaded slide rail at a position close to the center of the arc-shaped body. As the sliding disk slides along the threaded slide rail, the inclination degree slope of the ball head rod changes as the sliding disk slides along the threaded slide rail. At this time, the sphere slides relatively in the ball chute to ensure that the torque transmitted by the housing is transmitted to the stretching cylinder along the ball head rod. The spring cylinder stretches to change the distance between the ball head rod and the threaded slide rail. The stretching cylinder changes the stretching degree of the output end according to the signal of the control panel to ensure that the distance between the universal joint and the ball head rod remains unchanged, so as to stably clamp both ends of the alloy casting. The change in the inclination degree slope of the ball head rod itself changes the direction of the tensile load applied axially in a static state to the alloy casting material.

[0014] Further, the locking pin mechanism further includes a universal joint and a cross locking pin. The universal joint is fixedly connected to the stretching cylinder. The universal joint is rotatably connected to the electric control locking pin. The cross locking pin is rotatably connected to the universal joint. A spherical airbag and an electric control valve are provided on the cross locking pin. The spherical airbag contacts the universal joint. The stretching cylinder, the electric control valve, and the electric control locking pin are all connected to the control panel through electrical signals.

[0015] When the inclination of the ball head rod itself changes, the ball head rod rotates driven by the toothed disc. At this time, both the electric control lock pin and the cross lock pin on one side of the alloy casting are opened, the universal joint and the ball head rod remain in an active state, the universal joint and the wedge-shaped shell remain in a rotating state, the other end of the alloy casting is stably clamped by the clamping mechanism, and the torque of the rotation of the ball head rod itself will not be transmitted to the alloy casting through the universal joint. After the inclination change of the ball head rod is completed, the control panel sends a control signal, the electric control valve opens the external air pump to inject air into the spherical airbag, the spherical airbag expands to fix the universal joint joint, the universal joint and the ball head rod are relatively fixed, the electric control lock pin is closed, so that the universal joint and the wedge-shaped shell remain relatively fixed, and the slope of the inclination of the ball head rod itself changes, changing the direction of the tensile load applied to the alloy casting material in the static axial direction. The shell applies tensile loads in different directions to the alloy casting material in the static axial direction through the ball head rod and the universal joint.

[0016] Furthermore, the stretching mechanism further includes an assembly frame, a first motor, a threaded rod, and a pressure sensor. The assembly frame is fixedly connected to the side frame, the first motor, and the pressure sensor. The output end of the first motor is fixedly connected to the threaded rod. The sliding table is provided with a threaded hole and a pressing rod. The threaded rod is threadedly connected to the threaded hole. The side frame is provided with a vertical slide rail, and the sliding table is slidably connected to the vertical slide rail. The pressing rod contacts the pressure sensor. The first motor and the pressure sensor are both electrically connected to the control panel through electrical signals.

[0017] The first motor outputs a fixed-axis torque to the threaded rod. Through the threaded assembly between the threaded rod and the threaded hole, the torque of the threaded rod is converted into the reciprocating displacement of the sliding table along the vertical slide rail. The sliding table drives a set of clamping mechanisms to displace, applying a tensile load in the static axial direction to the two clamped alloy castings. The ultrasonic detector detects the alloy casting subjected to the load, whether the stress state inside the metal is close to the load limit. At the same time, the pressing rod presses the pressure sensor to record the torque state when the alloy casting is close to the load limit.

[0018] Furthermore, the clamping mechanism further includes a rocker, a rack rod, and a wedge block. The rocker is rotatably connected to the wedge-shaped shell. The wedge-shaped shell is provided with inner inclined surfaces. There are two groups of inner inclined surfaces and wedge blocks, and the two groups of inner inclined surfaces and wedge blocks are arranged mirror-symmetrically along the central plane of the wedge-shaped shell. The rocker is provided with a semi-circular gear pair, and the semi-circular gear pair meshes with the tooth surface of the rack rod. The rack rod is slidably connected to the wedge-shaped shell. The wedge block is provided with a limiting groove, and the rack rod contacts the limiting groove. The wedge block is slidably connected to the inner inclined surface.

[0019] The experimenter arranges the two ends of the alloy casting between two groups of wedge blocks respectively, rotates the rocker, and through the meshing of the semi-circular gear pair on the rocker and the tooth surface of the rack rod, the rack rod is displaced along its axis. The rack rod drives the wedge block to displace through the limiting groove, and the two mirror-symmetrically arranged wedge blocks slide towards each other along the inner inclined surface of the wedge-shaped shell, and the two wedge blocks fixedly clamp the alloy casting.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows: The present invention designs a dynamic mechanism. The fixed-axis torque is output from the torsion motor to the housing. The fixed-axis torque output by the torsion motor is converted into a spiral torque load on the alloy casting by the clamping mechanism. The driving motor outputs a fixed-axis torque to drive the gear rod to drive the gear disk to rotate. The ball head rod is slidably assembled between the sliding disk on the spring cylinder and the threaded slide rail. As the ball head rod rotates around the gear disk, the inclination slope of the ball head rod changes as the sliding disk slides along the threaded slide rail. The sphere slides relatively in the ball chute to ensure that the torque transmitted by the housing is transmitted to the tensile cylinder along the ball head rod. The spring cylinder stretches to change the distance between the ball head rod and the threaded slide rail, and the tensile cylinder changes the stretching degree of the output end to ensure that the distance between the universal joint and the ball head rod remains unchanged, so as to stably clamp both ends of the alloy casting. The inclination degree of the ball head rod itself changes, changing the force direction of the tensile load applied to the alloy casting material in the static axial direction, generating a spiral torque load on the alloy casting, simulating the load stretching state of the alloy casting in real complex working conditions, making the detection data close to the real state, and improving the accuracy and rationality of the detection data. The present invention designs a stretching mechanism to fix both ends of the alloy casting on the clamping mechanism respectively. One set of clamping mechanisms is fixed to the opposite side frame through the assembly plate. The electric control signal is sent to the stretching mechanism through the control panel. The stretching mechanism drives the other set of clamping mechanisms to apply a static axial tensile load to the alloy casting. The ultrasonic detector is used to detect the alloy casting under the applied load to check whether the stress state inside the metal is close to the load limit. At the same time, the stretching mechanism records the torque state of the alloy casting when it is close to the load limit. The present invention applies a static axial tensile load to the alloy casting, uses the ultrasonic wave to detect whether the casting is close to the load limit, actively changes the force direction of the applied tensile load, applies a torque load to the alloy casting, simulates the load stretching state in real complex working conditions, makes the detection data close to the real state, and improves the accuracy and rationality of the detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic diagram of the overall structure of the present invention; Figure 2 is a schematic diagram of the structure of the dynamic mechanism of the present invention; Figure 3 is a schematic diagram of the structure of the component force mechanism of the present invention; Figure 4 is a schematic diagram of the structure of the inclination mechanism of the present invention; Figure 5 is Figure 4 a partially enlarged schematic diagram of A; Figure 6 is a schematic diagram of the structure of the locking pin mechanism of the present invention; Figure 7 is a schematic diagram of the structure of the stretching mechanism of the present invention; Figure 8 is a schematic diagram of the structure of the clamping mechanism of the present invention.

[0022] In the figure: 1, bottom platform; 2, control panel; 3, ultrasonic detector; 4, dynamic mechanism; 41, assembly plate; 42, torsion motor; 43, component force mechanism; 431, housing; 4311, through hole; 432, drive motor; 433, gear rod; 434, inclination mechanism; 435, arc-shaped body; 4351, threaded slide rail; 436, gear disc; 4361, ball chute; 437, ball head rod; 4371, sphere; 438, spring cylinder; 4381, sliding disc; 44, locking pin mechanism; 441, stretching cylinder; 442, universal joint; 443, cross locking pin; 4431, spherical airbag; 4432, electric control valve; 444, electric control locking pin; 5, stretching mechanism; 51, assembly frame; 52, side frame; 521, vertical slide rail; 53, first motor; 54, threaded rod; 55, slide table; 551, threaded hole; 552, pressure rod; 56, pressure sensor; 6, clamping mechanism; 61, wedge-shaped shell; 611, inner inclined surface; 62, rocker; 621, semi-circular gear pair; 63, rack rod; 64, wedge block; 641, limit groove. Detailed implementation mode

[0023] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0024] As Figure 1 , Figure 2 , Figure 7 As shown, the technical solution of a detection device for alloy castings with a stretching performance detection function provided by the present invention includes a bottom platform 1, a control panel 2, an ultrasonic detector 3, a dynamic mechanism 4, a stretching mechanism 5 and a clamping mechanism 6. The dynamic mechanism 4 includes an assembly plate 41 and a locking pin mechanism 44. The stretching mechanism 5 includes a side frame 52 and a slide table 55. The clamping mechanism 6 includes a wedge-shaped shell 61. There are two sets of assembly plates 41 and clamping mechanisms 6. One set of assembly plates 41 is fixedly connected to the side frame 52, and the other set of assembly plates 41 is fixedly connected to the slide table 55. The locking pin mechanism 44 includes an electric control locking pin 444, and the electric control locking pin 444 is fixedly connected to the wedge-shaped shell 61. The side frame 52 and the control panel 2 are both fixedly connected to the bottom platform 1. The ultrasonic detector 3 is fixedly connected to the side frame 52. The ultrasonic detector 3, the dynamic mechanism 4 and the stretching mechanism 5 are all connected to the control panel 2 through electrical signals.

[0025] The present invention relates to a detection device for various mechanical property indexes of alloy casting materials under static axial tensile loads. The experimenter fixes both ends of the alloy casting on the clamping mechanism 6 respectively. One set of the clamping mechanism 6 is fixed relative to the side frame 52 through the assembly plate 41. An electric control signal is sent from the control panel 2 to the tensile mechanism 5. The tensile mechanism 5 drives the other set of the clamping mechanism 6 to apply a static axial tensile load to the alloy casting. The ultrasonic detector 3 is used to detect whether the stress state inside the alloy casting under the applied load is close to the load limit. At the same time, the torque state of the alloy casting when it is close to the load limit is recorded by the tensile mechanism 5, and the detected data signal is fed back to the control panel 2. The control panel 2 actively feeds back a control signal to the dynamic mechanism 4 to change the tensile load applied by the tensile mechanism 5 to the alloy casting material in the static axial direction. The dynamic mechanism 4 changes the load stress direction of the alloy casting to generate a helical torque load on the alloy casting, simulating the load tensile state of the alloy casting in the actual complex working conditions, making the detected data close to the actual state and improving the accuracy and rationality of the detected data.

[0026] As Figure 2 , Figure 3 , Figure 4 shown, the dynamic mechanism 4 further includes a torsion motor 42 and a force dividing mechanism 43. The force dividing mechanism 43 includes a housing 431 and an inclination mechanism 434. The inclination mechanism 434 includes a ball head rod 437. The locking pin mechanism 44 further includes a tensile cylinder 441. The torsion motor 42 is fixedly connected to the assembly plate 41. The output end of the torsion motor 42 is fixedly connected to the housing 431. The output end of the tensile cylinder 441 is fixedly connected to the ball head rod 437.

[0027] When simulating the dynamic load of the clamped alloy casting, the control panel 2 sends a control signal to the torsion motor 42. The torsion motor 42 outputs a fixed-axis torque to the housing 431. By driving the housing 431 to rotate around a fixed axis, the clamping mechanism 6 is relatively fixed to the housing 431. The fixed-axis torque output by the torsion motor 42 is converted into a helical torque load of the clamping mechanism 6 on the alloy casting, and the force dividing mechanism 43 is used to change the force direction of the tensile load applied by the tensile mechanism 5 to the alloy casting material in the static axial direction.

[0028] As Figure 3 , Figure 4 shown, the force dividing mechanism 43 further includes a driving motor 432 and a gear rod 433. A through hole 4311 is provided on the housing 431. The driving motor 432 is fixedly connected to the housing 431. The output end of the driving motor 432 is fixedly connected to the gear rod 433. The gear rod 433 is rotatably connected to the through hole 4311. The inclination mechanism 434 further includes a tooth disc 436. The gear rod 433 is in meshing engagement with the tooth surface of the tooth disc 436. The torsion motor 42 and the driving motor 432 are both connected to the control panel 2 through electric signals.

[0029] The control panel 2 sends a control signal to the drive motor 432. The drive motor 432 outputs a fixed-axis torque to the gear rod 433. Through the meshing of the tooth surfaces between the gear rod 433 and the tooth disc 436, the gear rod 433 transmits the torque to the tooth disc 436. The tooth disc 436 is rotationally assembled with the arc-shaped body 435. Through the rotation of the tooth disc 436, the tilting mechanism 434 changes the force application direction of the tensile load applied by the stretching mechanism 5 to the alloy casting material in the static axial direction.

[0030] As Figure 4 、 Figure 5 shown, the tilting mechanism 434 further includes an arc-shaped body 435 and a spring cylinder 438. The arc-shaped body 435 is fixedly connected to the housing 431. The tooth disc 436 is rotatably connected to the arc-shaped body 435. A sphere 4371 is provided on the ball head rod 437. A ball chute 4361 is provided on the tooth disc 436. The sphere 4371 is in contact with the ball chute 4361. The ball head rod 437 is fixedly connected to the spring cylinder 438.

[0031] The tooth disc 436 is rotationally assembled with the arc-shaped body 435. The ball chute 4361 on the tooth disc 436 is in contact with the sphere 4371. When the drive motor 432 outputs torque to drive the tooth disc 436 to rotate, and the tooth disc 436 drives the ball head rod 437 to rotate, the sphere 4371 slides relatively in the ball chute 4361. By driving the ball head rod 437 to rotate through the tooth disc 436, the force application direction of the tensile load applied by the stretching mechanism 5 to the alloy casting material in the static axial direction is changed.

[0032] As Figure 4 、 Figure 5 shown, a threaded slide rail 4351 is provided on the arc-shaped body 435. The threaded slide rail 4351 is provided on the side of the arc-shaped body 435 close to the tooth disc 436. A sliding disc 4381 is provided on the spring cylinder 438. The sliding disc 4381 is provided at the end of the spring cylinder 438 far from the ball head rod 437. The sliding disc 4381 is slidably connected to the threaded slide rail 4351.

[0033] The ball head rod 437 is slidably assembled with the threaded slide rail 4351 through the sliding disc 4381 on the spring cylinder 438. The gear disc 436 drives the ball head rod 437 to rotate. As the ball head rod 437 rotates around the gear disc 436, the threaded slide rail 4351 is arranged on the inner arc surface of the arc-shaped body 435. The inclination degree of the threaded slide rail 4351 away from the center of the arc-shaped body 435 is greater than the track inclination degree of the threaded slide rail 4351 close to the center of the arc-shaped body 435. As the sliding disc 4381 slides along the threaded slide rail 4351, the inclination degree slope of the ball head rod 437 changes with the sliding of the sliding disc 4381 along the threaded slide rail 4351. At this time, the sphere 4371 slides relatively in the ball chute 4361 to ensure that the torque transmitted by the housing 431 is transmitted along the ball head rod 437 to the tensile cylinder 441. The spring cylinder 438 stretches to change the distance between the ball head rod 437 and the threaded slide rail 4351. The tensile cylinder 441 changes the stretching degree of the output end according to the signal of the control panel 2 to ensure that the distance between the universal joint 442 and the ball head rod 437 remains unchanged, so as to stably clamp both ends of the alloy casting. The change in the inclination degree slope of the ball head rod 437 itself changes the force application direction of the tensile load applied to the alloy casting material in the static axial direction.

[0034] As Figure 6 shown, the locking pin mechanism 44 further includes a universal joint 442 and a cross locking pin 443. The universal joint 442 is fixedly connected to the tensile cylinder 441. The universal joint 442 is rotatably connected to the electric control locking pin 444. The cross locking pin 443 is rotatably connected to the universal joint 442. A spherical airbag 4431 and an electric control valve 4432 are provided on the cross locking pin 443. The spherical airbag 4431 contacts the universal joint 442. The tensile cylinder 441, the electric control valve 4432, and the electric control locking pin 444 are all connected to the control panel 2 through electric signals.

[0035] When the inclination degree slope of the ball head rod 437 itself changes, the ball head rod 437 itself rotates driven by the gear disc 436. At this time, both the electric control locking pin 444 and the cross locking pin 443 on one side of the alloy casting are opened. The universal joint 442 and the ball head rod 437 remain in an active state. The universal joint 442 and the wedge-shaped shell 61 remain in a rotating state. The other end of the alloy casting is stably clamped by the clamping mechanism 6. The torque of the rotation of the ball head rod 437 itself will not be transmitted to the alloy casting through the universal joint 442. After the inclination degree of the ball head rod 437 changes, the control panel 2 sends a control signal, and the electric control valve 4432 opens to inject air into the spherical airbag 4431 from an external air pump. The spherical airbag 4431 expands to fix the joint of the universal joint 442. The universal joint 442 and the ball head rod 437 are relatively fixed. The electric control locking pin 444 closes to keep the universal joint 442 and the wedge-shaped shell 61 relatively fixed. The change in the inclination degree slope of the ball head rod 437 itself changes the force application direction of the tensile load applied to the alloy casting material in the static axial direction. The housing 431 applies tensile loads in different directions to the alloy casting material in the static axial direction through the ball head rod 437 and the universal joint 442.

[0036] As shown Figure 7 in FIG. 1, the stretching mechanism 5 further includes an assembly frame 51, a first motor 53, a threaded rod 54, and a pressure sensor 56. The assembly frame 51 is fixedly connected to the side frame 52, the first motor 53, and the pressure sensor 56. The output end of the first motor 53 is fixedly connected to the threaded rod 54. The slide table 55 is provided with a threaded hole 551 and a pressure rod 552. The threaded rod 54 is threadedly connected to the threaded hole 551. The side frame 52 is provided with a vertical slide rail 521. The slide table 55 is slidably connected to the vertical slide rail 521. The pressure rod 552 contacts the pressure sensor 56. The first motor 53 and the pressure sensor 56 are both electrically connected to the control panel 2 through electrical signals.

[0037] The first motor 53 outputs a fixed-axis torque to the threaded rod 54. Through the threaded assembly between the threaded rod 54 and the threaded hole 551, the torque of the threaded rod 54 is converted into a reciprocating displacement of the slide table 55 along the vertical slide rail 521. The slide table 55 drives a set of clamping mechanisms 6 to displace, applying a tensile load in the static axial direction to the two clamped alloy castings. The ultrasonic detector 3 detects the alloy castings subjected to the load, whether the stress state inside the metal is close to the load limit. At the same time, the pressure rod 552 presses the pressure sensor 56 to record the torque state when the alloy casting is close to the load limit.

[0038] As shown Figure 8 in FIG. 2, the clamping mechanism 6 further includes a rocker 62, a rack bar 63, and a wedge block 64. The rocker 62 is rotatably connected to the wedge-shaped housing 61. The wedge-shaped housing 61 is provided with inner inclined surfaces 611. There are two sets of inner inclined surfaces 611 and wedge blocks 64. The two sets of inner inclined surfaces 611 and wedge blocks 64 are arranged mirror-symmetrically along the central plane of the wedge-shaped housing 61. The rocker 62 is provided with a semi-circular gear pair 621. The semi-circular gear pair 621 is in meshing engagement with the tooth surface of the rack bar 63. The rack bar 63 is slidably connected to the wedge-shaped housing 61. The wedge block 64 is provided with a limiting groove 641. The rack bar 63 contacts the limiting groove 641. The wedge block 64 is slidably connected to the inner inclined surface 611.

[0039] The experimenter places the two ends of the alloy casting between the two sets of wedge blocks 64 respectively, rotates the rocker 62. Through the meshing engagement between the semi-circular gear pair 621 on the rocker 62 and the tooth surface of the rack bar 63, the rack bar 63 is displaced along its axis. The rack bar 63 drives the wedge block 64 to displace through the limiting groove 641. The two sets of mirror-symmetrically arranged wedge blocks 64 slide towards each other along the inner inclined surface 611 of the wedge-shaped housing 61, and the two sets of wedge blocks 64 fixedly clamp the alloy casting.

[0040] Working principle of the present invention: Fix both ends of the alloy casting. A set of clamping mechanisms 6 are fixed relative to the side frame 52 through the assembly plate 41. The control panel 2 sends an electric control signal. The stretching mechanism 5 drives another set of clamping mechanisms 6 to apply a static axial tensile load to the alloy casting. The ultrasonic detector 3 detects the alloy casting under the applied load to determine whether the stress state inside the metal is close to the load limit. At the same time, record the torque state when the alloy casting is close to the load limit. When performing a simulation load on the clamped alloy casting, the rotary motor 42 outputs a fixed-axis torque to the housing 431. The fixed-axis torque output by the rotary motor 42 is converted into a helical torque load on the alloy casting by the clamping mechanism 6. The drive motor 432 outputs a fixed-axis torque to drive the gear rod 433 to drive the gear disk 436 to rotate. The ball head rod 437 is slidably assembled between the sliding disk 4381 on the spring cylinder 438 and the threaded slide rail 4351. As the ball head rod 437 rotates around the gear disk 436, the inclination slope of the ball head rod 437 changes as the sliding disk 4381 slides along the threaded slide rail 4351. The spherical body 4371 slides relatively within the ball chute 4361 to ensure that the torque transmitted by the housing 431 is transmitted along the ball head rod 437 to the stretching cylinder 441. The spring cylinder 438 stretches to change the distance between the ball head rod 437 and the threaded slide rail 4351. The stretching cylinder 441 changes the stretching degree of the output end to ensure that the distance between the universal joint 442 and the ball head rod 437 remains unchanged, so as to stably clamp both ends of the alloy casting. The inclination slope of the ball head rod 437 itself changes, changing the direction of the tensile load applied axially to the alloy casting material in the static state, generating a helical torque load on the alloy casting, simulating the load stretching state of the alloy casting under realistic complex working conditions, making the detection data closer to the real state, and improving the accuracy and rationality of the detection data.

[0041] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claimed claims.

Claims

1. A detection device for alloy castings with a tensile property detection function, characterized in that: The detection device includes a base table (1), a control panel (2), an ultrasonic detector (3), a dynamic mechanism (4), a stretching mechanism (5) and a clamping mechanism (6). The dynamic mechanism (4) includes an assembly plate (41) and a locking pin mechanism (44). The stretching mechanism (5) includes a side frame (52) and a sliding table (55). The clamping mechanism (6) includes a wedge-shaped shell (61). There are two sets of the assembly plate (41) and the clamping mechanism (6). One set of the assembly plate (41) is fixedly connected to the side frame (52), and the other set of the assembly plate (41) is fixedly connected to the sliding table (55). The locking pin mechanism (44) includes an electric control locking pin (444), and the electric control locking pin (444) is fixedly connected to the wedge-shaped shell (61). The side frame (52) and the control panel (2) are both fixedly connected to the base table (1). The ultrasonic detector (3) is fixedly connected to the side frame (52). The ultrasonic detector (3), the dynamic mechanism (4) and the stretching mechanism (5) are all connected to the control panel (2) through electrical signals.

2. The testing device for alloy castings with a tensile property testing function according to claim 1, wherein: The dynamic mechanism (4) further includes a torsion motor (42) and a force splitting mechanism (43). The force splitting mechanism (43) includes a housing (431) and an inclination mechanism (434). The inclination mechanism (434) includes a ball head rod (437). The locking pin mechanism (44) further includes a stretching cylinder (441). The torsion motor (42) is fixedly connected to the assembly plate (41). The output end of the torsion motor (42) is fixedly connected to the housing (431). The output end of the stretching cylinder (441) is fixedly connected to the ball head rod (437).

3. The alloy casting detection device with tensile property detection function according to claim 2, characterized in that: The force splitting mechanism (43) further includes a driving motor (432) and a gear rod (433). A through hole (4311) is provided on the housing (431). The driving motor (432) is fixedly connected to the housing (431). The output end of the driving motor (432) is fixedly connected to the gear rod (433). The gear rod (433) is rotatably connected to the through hole (4311). The inclination mechanism (434) further includes a gear disk (436). The gear rod (433) is in tooth surface engagement with the gear disk (436). The torsion motor (42) and the driving motor (432) are both connected to the control panel (2) through electrical signals.

4. The alloy casting detection device with tensile property detection function according to claim 3, characterized in that: The inclination mechanism (434) further includes an arc-shaped body (435) and a spring cylinder (438). The arc-shaped body (435) is fixedly connected to the housing (431). The gear disk (436) is rotatably connected to the arc-shaped body (435). A sphere (4371) is provided on the ball head rod (437). A ball chute (4361) is provided on the gear disk (436). The sphere (4371) is in contact with the ball chute (4361). The ball head rod (437) is fixedly connected to the spring cylinder (438).

5. The detection device for alloy castings with a tensile property detection function according to claim 4, characterized in that: The arc-shaped body (435) is provided with a threaded slide rail (4351). The threaded slide rail (4351) is arranged on the side of the arc-shaped body (435) close to the gear disk (436). The spring cylinder (438) is provided with a sliding disk (4381). The sliding disk (4381) is arranged at one end of the spring cylinder (438) far from the ball head rod (437). The sliding disk (4381) is slidably connected with the threaded slide rail (4351).

6. The testing device for alloy castings with a tensile property testing function according to claim 2, characterized in that: The locking pin mechanism (44) further includes a universal joint (442) and a cross locking pin (443). The universal joint (442) is fixedly connected with the stretching cylinder (441). The universal joint (442) is rotatably connected with the electric control locking pin (444). The cross locking pin (443) is rotatably connected with the universal joint (442). The cross locking pin (443) is provided with a spherical airbag (4431) and an electric control valve (4432). The spherical airbag (4431) contacts the universal joint (442). The stretching cylinder (441), the electric control valve (4432), and the electric control locking pin (444) are all electrically connected to the control panel (2) through electrical signals.

7. The testing device for alloy castings with a tensile property testing function according to claim 1, characterized in that: The stretching mechanism (5) further includes an assembly frame (51), a first motor (53), a threaded rod (54), and a pressure sensor (56). The assembly frame (51) is fixedly connected with the side frame (52), the first motor (53), and the pressure sensor (56). The output end of the first motor (53) is fixedly connected with the threaded rod (54). The sliding table (55) is provided with a threaded hole (551) and a pressure rod (552). The threaded rod (54) is threadedly connected with the threaded hole (551). The side frame (52) is provided with a vertical slide rail (521). The sliding table (55) is slidably connected with the vertical slide rail (521). The pressure rod (552) contacts the pressure sensor (56). The first motor (53) and the pressure sensor (56) are both electrically connected to the control panel (2) through electrical signals.

8. The detection device for alloy castings with a tensile property detection function according to claim 1, characterized in that: The clamping mechanism (6) further includes a rocker (62), a rack bar (63), and a wedge block (64). The rocker (62) is rotatably connected with the wedge-shaped shell (61). The wedge-shaped shell (61) is provided with an inner inclined surface (611). There are two groups of the inner inclined surface (611) and the wedge block (64). The two groups of the inner inclined surface (611) and the wedge block (64) are arranged mirror-symmetrically along the central plane of the wedge-shaped shell (61). The rocker (62) is provided with a semi-circular gear pair (621). The semi-circular gear pair (621) is meshed with the tooth surface of the rack bar (63). The rack bar (63) is slidably connected with the wedge-shaped shell (61). The wedge block (64) is provided with a limiting groove (641). The rack bar (63) contacts the limiting groove (641). The wedge block (64) is slidably connected with the inner inclined surface (611).

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