Strength detection equipment for cast steel product

Abstract

The invention relates to the technical field of cast steel detection, and particularly discloses cast steel product strength detection equipment which comprises a separated fixing mechanism, the separated fixing mechanism comprises a first supporting assembly and a second supporting assembly, and the first supporting assembly and the second supporting assembly are arranged in a spaced mode. The two ends of a workpiece to be detected are placed on the first supporting assembly and the second supporting assembly respectively, the first supporting assembly and the second supporting assembly each comprise a sliding groove, a first sliding seat and a second sliding seat are arranged in the sliding grooves in a sliding mode, and a first electromagnetic plate and a second electromagnetic plate are arranged on the first sliding seat and the second sliding seat respectively. Electromagnets are arranged in the first electromagnetic plate and the second electromagnetic plate, the first sliding seat and the second sliding seat are attracted together through magnetic force, so that a workpiece is clamped, and at the moment that the workpiece is broken, magnetic attraction of the electromagnets in the first sliding seat changes, the first sliding seat and the second sliding seat are pushed to be separated from each other and break away from the workpiece. And the equipment is prevented from being influenced by vibration during workpiece breakage.

Description

Technical Field

[0001] The present application relates to the technical field of cast steel detection, and in particular to a strength detection device for cast steel products. Background Art

[0002] Steel castings refer to parts made of cast steel, which have similar properties to cast iron but better strength than cast iron. After the production of cast steel is completed, it is usually necessary to conduct quality inspection. Quality inspection generally includes tensile strength, compressive strength, plasticity, hardness and other categories.

[0003] When testing the compressive strength of long cast steel products, the cast steel products to be tested are usually placed overhead, and then the pressing mechanism is used to press down the middle of the product to determine the compressive strength of the product. However, during the above testing process, the product may break, and when the product breaks, it will produce more violent vibrations, thereby affecting the clamping parts of the product and causing damage to the clamping parts. Summary of the invention

[0004] The present application provides a strength testing device for cast steel products, thereby solving the technical problem in the prior art that when performing compressive strength testing on long strip cast steel products, the product may break. When the product breaks, relatively violent vibrations will be generated, thereby affecting the clamping parts of the product and causing damage to the clamping parts. The application achieves that at the moment the product breaks, the equipment is separated from the contact with the product, thereby preventing the vibration of the broken workpiece from affecting the equipment.

[0005] The present application provides a strength testing device for a cast steel product, comprising a testing platform, on which is provided: A separate fixing mechanism, the separate fixing mechanism is used to overhead support and fix the workpiece to be inspected; The separate fixing mechanism comprises a first supporting assembly and a second supporting assembly, the first supporting assembly and the second supporting assembly are arranged at an interval, and two ends of the workpiece to be inspected are placed on the first supporting assembly and the second supporting assembly respectively; The first supporting assembly and the second supporting assembly have the same structure and both include a sliding groove, wherein the sliding groove is perpendicular to the connecting line of the first supporting assembly and the second supporting assembly, wherein a first sliding seat and a second sliding seat are slidingly arranged in the sliding groove, and a first electromagnetic plate and a second electromagnetic plate are respectively arranged on opposite surfaces of the first sliding seat and the second sliding seat, wherein the first electromagnetic plate is mounted on the first sliding seat and the second electromagnetic plate is mounted on the second sliding seat, and electromagnets are arranged in the first electromagnetic plate and the second electromagnetic plate, wherein the electromagnets are magnetic when energized and have different magnetic poles according to different directions of the current.

[0006] Furthermore, the first sliding seat is provided with a first plug rod, the second sliding seat is provided with a first plug hole corresponding to the first plug rod, and the first plug rod is sleeved with a first spring on its exterior; When the first sliding seat and the second sliding seat are fitted together, the first insertion rod is inserted into the first insertion hole to compress the first spring, so that the first spring accumulates potential energy; At the moment when the current direction of the electromagnet in the first electromagnetic plate is switched, the first spring releases the stored potential energy to push the first sliding seat and the second sliding seat to separate.

[0007] Further, a fourth electromagnetic plate and a fifth electromagnetic plate are respectively arranged on the opposite back surfaces of the first sliding seat and the second sliding seat, the fourth electromagnetic plate is mounted on the first sliding seat, the fifth electromagnetic plate is mounted on the second sliding seat, and the third electromagnetic plate and the sixth electromagnetic plate are respectively arranged at both ends of the sliding groove; The third electromagnetic plate, the fourth electromagnetic plate, the fifth electromagnetic plate and the sixth electromagnetic plate are all provided with electromagnets therein, which are magnetic when energized and have different magnetic poles according to different current directions.

[0008] Furthermore, the first supporting assembly has two forms: A combined form, when in the combined form, the first electromagnetic plate and the second electromagnetic plate have opposite magnetic poles, and there is an attraction between the two, so that they are combined together, the third electromagnetic plate and the fourth electromagnetic plate have the same magnetism, and there is a repulsion between the two, so that the first sliding seat is repelled away from the left end of the sliding groove, and the fifth electromagnetic plate and the sixth electromagnetic plate have the same magnetism, and there is a repulsion between the two, so that the second sliding seat is repelled away from the right end of the sliding groove, so that the first sliding seat and the second sliding seat are in contact; Separation form, when in the separation form, the magnetic poles of the first electromagnetic plate and the second electromagnetic plate are the same, and there is a repulsive force between the two, thereby quickly separating, the magnetic properties of the third electromagnetic plate and the fourth electromagnetic plate are opposite, and there is an attractive force between the two, thereby attracting the first sliding seat to the left end of the sliding groove, the magnetic properties of the fifth electromagnetic plate and the sixth electromagnetic plate are opposite, and there is an attractive force between the two, thereby attracting the second sliding seat to the right end of the sliding groove, so that the first sliding seat and the second sliding seat are separated.

[0009] Further, a second plug hole is provided at the left end of the sliding groove, a second plug rod corresponding to the second plug hole is provided on the first sliding seat, a second spring is provided on the second plug rod, and two ends of the second spring are respectively connected to the end of the sliding groove and the first sliding seat, and when the first sliding seat and the second sliding seat are attached together, the second spring is in a stretched state; At the moment when the current direction of the electromagnet in the third electromagnetic plate is switched, the second spring releases the stored potential energy, drags the first sliding seat toward the end of the sliding groove, and then separates the first sliding seat from the second sliding seat.

[0010] Further, a third plug hole is provided at the right end of the sliding groove, a third plug rod corresponding to the third plug hole is provided on the second sliding seat, a third spring is provided on the third plug rod, and the third spring is connected to the end of the sliding groove and the second sliding seat, and when the first sliding seat and the second sliding seat are attached together, the third spring is in a stretched state; At the moment when the current direction of the electromagnet in the fifth electromagnetic plate is switched, the third spring releases the stored potential energy, drags the second sliding seat toward the end of the sliding groove, and then separates the first sliding seat from the second sliding seat.

[0011] Furthermore, a first bearing notch is provided at the top of the first sliding seat, and a second bearing notch is provided at the top of the second sliding seat. When the first sliding seat and the second sliding seat are tightly pressed together, the first bearing notch and the second bearing notch are merged together to form a bearing groove, which is used to receive the end of the workpiece.

[0012] Furthermore, a lifting support assembly is arranged between the first support assembly and the second support assembly, and the lifting support assembly includes a lifting groove opened on the detection platform, a first lifting cylinder is arranged in the lifting groove, an output end of the first lifting cylinder is vertically upward and connected to a lifting plate, and the lifting plate matches the size of the lifting groove.

[0013] Further, when the output end of the first lifting cylinder is in a retracted state, the lifting plate is embedded in the lifting groove; When the output end of the first lifting cylinder is fully extended, the lifting plate moves to be flush with the first sliding seat, so that when a workpiece is placed on the lifting plate, the end of the workpiece is opposite to the first bearing notch and the second bearing notch, so that the first supporting assembly can clamp the workpiece; After the first supporting assembly clamps the workpiece, the lifting supporting assembly is reset to avoid affecting the action of the pressing mechanism.

[0014] The technical solution provided by this application has at least the following technical effects or advantages: 1. Due to the use of a separate fixing mechanism, when the first sliding seat and the second sliding seat in the separate fixing mechanism are combined together, they can carry and clamp the workpiece, and the first sliding seat and the second sliding seat are attracted together by magnetic force. At the moment when the workpiece breaks, the magnetic attraction of the electromagnet in the first sliding seat changes, thereby pushing the first sliding seat and the second sliding seat to separate and break away from the contact with the workpiece, thereby avoiding the vibration when the workpiece breaks affecting the equipment.

[0015] 2. Due to the use of the first spring, the second spring and the third spring, when the first sliding seat and the second sliding seat are fitted together, the first spring is compressed, and the second spring and the third spring are stretched, thereby having more potential energy. At the moment when the workpiece breaks, the current directions of the magnets in the first sliding seat, the third electromagnetic plate and the fifth electromagnetic plate are switched, so that the separation speed of the first sliding seat and the second sliding seat is accelerated, thereby avoiding the vibration caused by the breakage of the workpiece to affect the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of the strength detection device in the embodiment of the present application; Figure 2 It is a cross-sectional schematic diagram of a strength detection device in an embodiment of the present application; Figure 3 It is a cross-sectional schematic diagram from another perspective of the strength detection device in the embodiment of the present application; Figure 4 It is a top view schematic diagram of the strength detection device in the embodiment of the present application; Figure 5 Implementation Method of this Application Figure 4 A schematic diagram of the enlarged structure in the middle; Figure 6 This is a partial structural schematic diagram of the first supporting assembly in the implementation manner of the present application; Figure 7 This is a schematic diagram of the structure of the second jack in an embodiment of the present application; Figure 8 Schematic diagram of the structure of the third jack in the implementation mode of the present application.

[0017] In the figure: 1. Testing platform; 2. Separate fixing mechanism; 21. First support assembly; 22. Second support assembly; 23. Lifting support assembly; 24. Horizontal calibration assembly; 25. Vertical calibration assembly; 211, sliding groove; 212, first sliding seat; 213, second sliding seat; 214, first bearing notch; 215, second bearing notch; 216, first electromagnetic plate; 217, second electromagnetic plate; 218, third electromagnetic plate; 219, fourth electromagnetic plate; 2110, fifth electromagnetic plate; 2111, sixth electromagnetic plate; 2112, first plug rod; 2113, first plug hole; 2114, first spring; 2115, second plug hole; 2116, second plug rod; 2117, second spring; 2118, third plug hole; 2119, third plug rod; 2120, third spring; 231, lifting groove; 232, first lifting cylinder; 233, lifting plate; 241, transverse calibration groove; 242, second lifting cylinder; 243, transverse calibration cylinder; 244, transverse fixing seat; 245, transverse calibration plate; 251. Longitudinal calibration groove; 252. Third lifting cylinder; 253. Longitudinal calibration cylinder; 254. Longitudinal fixing seat; 255. Longitudinal calibration plate. DETAILED DESCRIPTION

[0018] The embodiment of the present application discloses a strength detection device for cast steel products. Due to the use of a separate fixing mechanism 2, when the first sliding seat 212 and the second sliding seat 213 in the separate fixing mechanism 2 are combined together, they can carry and clamp the workpiece, and the first sliding seat 212 and the second sliding seat 213 are attracted together by magnetic force. At the moment when the workpiece breaks, the magnetic attraction of the electromagnet in the first sliding seat 212 changes, thereby pushing the first sliding seat 212 and the second sliding seat 213 to separate and break away from the contact with the workpiece, thereby avoiding the vibration when the workpiece breaks affecting the equipment.

[0019] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0020] Embodiment 1

[0021] Reference Figures 1 to 8 The present invention provides a strength testing device for cast steel products, comprising a testing platform 1, on which a separate fixing mechanism 2 is provided, and the separate fixing mechanism 2 is used to overhead support and fix a workpiece to be tested. The separate fixing mechanism 2 comprises a first supporting assembly 21 and a second supporting assembly 22, wherein the first supporting assembly 21 and the second supporting assembly 22 are arranged at intervals, and the two ends of the workpiece to be tested are placed on the first supporting assembly 21 and the second supporting assembly 22, respectively.

[0022] It should be noted that, refer to Figures 4 to 8In this embodiment, the first supporting assembly 21 and the second supporting assembly 22 have the same structure and both include a sliding groove 211. The sliding groove 211 is perpendicular to the connecting line of the first supporting assembly 21 and the second supporting assembly 22. A first sliding seat 212 and a second sliding seat 213 are slidably arranged in the sliding groove 211. A first electromagnetic plate 216 and a second electromagnetic plate 217 are respectively arranged on opposite surfaces of the first sliding seat 212 and the second sliding seat 213. The first electromagnetic plate 216 is installed on the first sliding seat 212, and the second electromagnetic plate 217 is installed on the second sliding seat 213. Electromagnets are arranged in the first electromagnetic plate 216 and the second electromagnetic plate 217. The electromagnets are magnetic when energized and have different magnetic poles according to different current directions.

[0023] Specifically, refer to Figure 5 A first bearing notch 214 is provided at the top of the first sliding seat 212, and a second bearing notch 215 is provided at the top of the second sliding seat 213. When the first sliding seat 212 and the second sliding seat 213 are tightly pressed together, the first bearing notch 214 and the second bearing notch 215 are merged together to form a bearing groove, which is used to receive the end of the workpiece.

[0024] Based on the above arrangement, in this embodiment, the first sliding seat 212 and the second sliding seat 213 are attracted together by magnetic force to clamp the workpiece. At the moment when the workpiece breaks, the magnetic attraction of the electromagnet in the first sliding seat 212 changes, pushing the first sliding seat 212 and the second sliding seat 213 to separate and break away from the contact with the workpiece, thereby preventing the vibration when the workpiece breaks from affecting the device.

[0025] Further, refer to Figure 5 A fourth electromagnetic plate 219 and a fifth electromagnetic plate 2110 are respectively arranged on the opposite sides of the first sliding seat 212 and the second sliding seat 213, the fourth electromagnetic plate 219 is installed on the first sliding seat 212, and the fifth electromagnetic plate 2110 is installed on the second sliding seat 213. The third electromagnetic plate 218 and the sixth electromagnetic plate 2111 are respectively arranged at both ends of the sliding groove 211, and the third electromagnetic plate 218, the fourth electromagnetic plate 219, the fifth electromagnetic plate 2110 and the sixth electromagnetic plate 2111 are all provided with electromagnets inside, which are magnetic when energized and have different magnetic poles according to different current directions.

[0026] The first supporting assembly 21 of this embodiment has two forms: Merged state: when in the merged state, the magnetic poles of the first electromagnetic plate 216 and the second electromagnetic plate 217 are opposite, and there is a large attraction between the two, so they are merged together; the magnetic properties of the third electromagnetic plate 218 and the fourth electromagnetic plate 219 are the same, and there is a large repulsion between the two, so that the first sliding seat 212 is repelled away from the left end of the sliding groove 211; the magnetic properties of the fifth electromagnetic plate 2110 and the sixth electromagnetic plate 2111 are the same, and there is a large repulsion between the two, so that the second sliding seat 213 is repelled away from the right end of the sliding groove 211, so that the first sliding seat 212 and the second sliding seat 213 are in contact with each other; The first electromagnetic plate 216, the second electromagnetic plate 217, the third electromagnetic plate 218, the fourth electromagnetic plate 219, the fifth electromagnetic plate 2110 and the sixth electromagnetic plate 2111 work together to move the first sliding seat 212 and the second sliding seat 213 to the middle part of the sliding groove 211 and merge together, thereby clamping the workpiece; Separation state: when in the separation state, the first electromagnetic plate 216 and the second electromagnetic plate 217 have the same magnetic poles, and there is a large repulsive force between the two, so that they are quickly separated; the third electromagnetic plate 218 and the fourth electromagnetic plate 219 have opposite magnetic poles, and there is a large suction force between the two, so that the first sliding seat 212 is attracted to the left end of the sliding groove 211; the fifth electromagnetic plate 2110 and the sixth electromagnetic plate 2111 have opposite magnetic poles, and there is a large suction force between the two, so that the second sliding seat 213 is attracted to the right end of the sliding groove 211, so that the first sliding seat 212 and the second sliding seat 213 are separated; The first electromagnetic plate 216, the second electromagnetic plate 217, the third electromagnetic plate 218, the fourth electromagnetic plate 219, the fifth electromagnetic plate 2110 and the sixth electromagnetic plate 2111 work together to quickly separate the first sliding seat 212 and the second sliding seat 213, so that the end of the workpiece is no longer supported by the first supporting assembly 21, and there is no contact between the two, thereby preventing the first supporting assembly 21 from being subjected to vibration caused by the breakage of the workpiece.

[0027] The present embodiment also includes a pressing mechanism, the output end of which is located above the workpiece, the output end of which is located above the connection line between the first support assembly 21 and the second support assembly 22, the pressing mechanism is used to press the workpiece, the output end of which is connected to a pressure sensor, the pressure sensor is used to display the pressure value, the pressure sensor is connected to a control chip, the control chip is connected to the electromagnet controller, when the pressure detection instantaneous change is zero, it means that the workpiece is broken, at this time, the control chip controls the electromagnet current to reverse, so that the first support assembly 21 is separated.

[0028] It should be noted that when the workpiece is broken, it is no longer pressed down by the pressing mechanism, so the pressure applied by the pressing mechanism cannot be transmitted to the first supporting assembly 21, so the separation action of the first supporting assembly 21 can be performed relatively smoothly.

[0029] In this embodiment, a separate fixing mechanism 2 is provided. When the first sliding seat 212 and the second sliding seat 213 in the separate fixing mechanism 2 are combined together, the workpiece can be carried and clamped. The first sliding seat 212 and the second sliding seat 213 are attracted together by magnetic force. At the moment when the workpiece breaks, the magnetic attraction of the electromagnet in the first sliding seat 212 changes, thereby pushing the first sliding seat 212 and the second sliding seat 213 to separate and break away from the contact with the workpiece, thereby avoiding the vibration when the workpiece breaks affecting the equipment.

[0030] Embodiment 2

[0031] Reference Figures 1 to 8 On the basis of the first embodiment, a first plug rod 2112 is provided on the first sliding seat 212, a first plug hole 2113 corresponding to the first plug rod 2112 is provided on the second sliding seat 213, and a first spring 2114 is sleeved on the outside of the first plug rod 2112.

[0032] When the first sliding seat 212 and the second sliding seat 213 are attached together, the first insertion rod 2112 is inserted into the first insertion hole 2113 to compress the first spring 2114, so that the first spring 2114 accumulates potential energy; At the moment when the current direction of the electromagnet in the first electromagnetic plate 216 is switched, the first spring 2114 releases the stored potential energy to push the first sliding seat 212 and the second sliding seat 213 to separate.

[0033] Similarly, refer to Figures 6 to 8 The left end of the sliding groove 211 is provided with a second plug hole 2115, the first sliding seat 212 is provided with a second plug rod 2116 corresponding to the second plug hole 2115, the second plug rod 2116 is provided with a second spring 2117, and the two ends of the second spring 2117 are respectively connected to the end of the sliding groove 211 and the first sliding seat 212, and when the first sliding seat 212 and the second sliding seat 213 are attached together, the second spring 2117 is in a stretched state; At the moment when the current direction of the electromagnet in the third electromagnetic plate 218 is switched, the second spring 2117 releases the stored potential energy, dragging the first sliding seat 212 toward the end of the sliding groove 211 , thereby separating the first sliding seat 212 and the second sliding seat 213 .

[0034] Further, a third plug hole 2118 is provided at the right end of the sliding groove 211, a third plug rod 2119 corresponding to the third plug hole 2118 is provided on the second sliding seat 213, a third spring 2120 is provided on the third plug rod 2119, and the third spring 2120 is connected to the end of the sliding groove 211 and the second sliding seat 213. When the first sliding seat 212 and the second sliding seat 213 are attached together, the third spring 2120 is in a stretched state; At the moment when the current direction of the electromagnet in the fifth electromagnetic plate 2110 is switched, the third spring 2120 releases the stored potential energy, dragging the second sliding seat 213 toward the end of the sliding groove 211, thereby separating the first sliding seat 212 and the second sliding seat 213.

[0035] In this embodiment, the first spring 2114, the second spring 2117 and the third spring 2120 are arranged. When the first sliding seat 212 and the second sliding seat 213 are fitted together, the first spring 2114 is compressed, and the second spring 2117 and the third spring 2120 are stretched, thereby having more potential energy. At the moment when the workpiece breaks, the current directions of the magnets in the first sliding seat 212, the third electromagnetic plate 218 and the fifth electromagnetic plate 2110 are switched, thereby pushing the first sliding seat 212 and the second sliding seat 213 to separate and break away from the contact with the workpiece, thereby preventing the vibration when the workpiece breaks from affecting the equipment.

[0036] Embodiment 3

[0037] Reference Figures 1 to 8 On the basis of the second embodiment, a lifting support assembly 23 is arranged between the first support assembly 21 and the second support assembly 22, and the lifting support assembly 23 includes a lifting groove 231 opened on the detection platform 1, and a first lifting cylinder 232 is arranged in the lifting groove 231. The output end of the first lifting cylinder 232 is vertically upward and connected to a lifting plate 233, and the lifting plate 233 matches the size of the lifting groove 231.

[0038] It should be noted that when the output end of the first lifting cylinder 232 is in a retracted state, the lifting plate 233 is embedded in the lifting groove 231; When the output end of the first lifting cylinder 232 is fully extended, the lifting plate 233 moves to be flush with the first sliding seat 212, so that when a workpiece is placed on the lifting plate 233, the end of the workpiece is opposite to the first bearing notch 214 and the second bearing notch 215, so that the first supporting assembly 21 can clamp the workpiece; After the first supporting assembly 21 clamps the workpiece, the lifting supporting assembly 23 is reset to avoid affecting the action of the pressing mechanism.

[0039] Embodiment 4

[0040] Reference Figures 1 to 8 On the basis of the third embodiment, a lateral calibration component 24 is provided on the detection platform 1, and the lateral calibration component 24 is used to calibrate the lateral position of the workpiece.

[0041] The transverse calibration assembly 24 includes transverse calibration grooves 241 arranged on both sides of the lifting groove 231, a second lifting cylinder 242 is arranged in the transverse calibration groove 241, the output end of the second lifting cylinder 242 is vertically upward and connected to the transverse calibration cylinder 243, the output end of the transverse calibration cylinder 243 is arranged horizontally and directly facing the lifting groove 231, the output end of the transverse calibration cylinder 243 is connected to a transverse fixing seat 244, a transverse calibration plate 245 is installed on the transverse fixing seat 244, and the transverse calibration plate 245 matches the size of the transverse calibration groove 241; When the output ends of the second lifting cylinder 242 and the transverse calibration cylinder 243 are both in a contracted state, the transverse calibration plate 245 is embedded in the transverse calibration groove 241 .

[0042] Furthermore, a longitudinal calibration component 25 is provided on the detection platform 1, and the longitudinal calibration component 25 is used to calibrate the longitudinal position of the workpiece.

[0043] The longitudinal calibration component 25 includes longitudinal calibration grooves 251 arranged on both longitudinal sides of the lifting groove 231, and a third lifting cylinder 252 is arranged in the longitudinal calibration groove 251. The output end of the third lifting cylinder 252 is vertically upward and connected to the longitudinal calibration cylinder 253. The output end of the longitudinal calibration cylinder 253 is horizontally arranged and facing the lifting groove 231. The output end of the longitudinal calibration cylinder 253 is connected to a longitudinal fixing seat 254, and a longitudinal calibration plate 255 is installed on the longitudinal fixing seat 254. The longitudinal calibration plate 255 matches the size of the longitudinal calibration groove 251.

[0044] When the output ends of the second lifting cylinder and the longitudinal alignment cylinder are both in a contracted state, the longitudinal alignment plate is embedded in the longitudinal alignment groove.

[0045] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

[0046] What has been described above is only a preferred specific implementation manner of the embodiments of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can make equivalent substitutions or changes according to the technical scheme and concept of the present application within the technical scope disclosed in the present application, which should be covered by the protection scope of the present application.

Claims

1. A strength testing device for cast steel products, characterized in that: The invention comprises a detection platform (1), wherein the detection platform (1) is provided with: A separate fixing mechanism (2), the separate fixing mechanism (2) being used for overhead support and fixing a workpiece to be inspected; The separate fixing mechanism (2) comprises a first supporting assembly (21) and a second supporting assembly (22), wherein the first supporting assembly (21) and the second supporting assembly (22) are arranged at an interval, and two ends of a workpiece to be inspected are respectively placed on the first supporting assembly (21) and the second supporting assembly (22); The first support assembly (21) and the second support assembly (22) have the same structure and both comprise a sliding groove (211). The sliding groove (211) is perpendicular to a line connecting the first support assembly (21) and the second support assembly (22). A first sliding seat (212) and a second sliding seat (213) are slidingly arranged in the sliding groove (211). A first electromagnetic plate (216) and a second electromagnetic plate (217) are respectively arranged on opposite surfaces of the first sliding seat (212) and the second sliding seat (213). The first electromagnetic plate (216) is mounted on the first sliding seat (212), and the second electromagnetic plate (217) is mounted on the second sliding seat (213). Electromagnets are arranged in the first electromagnetic plate (216) and the second electromagnetic plate (217). The electromagnets have magnetism when electricity is supplied, and have different magnetic poles according to different directions of current.

2. A strength testing device for cast steel products as claimed in claim 1, characterized in that: The first sliding seat (212) is provided with a first insertion rod (2112), the second sliding seat (213) is provided with a first insertion hole (2113) corresponding to the first insertion rod (2112), and the first insertion rod (2112) is sleeved with a first spring (2114) on its exterior; When the first sliding seat (212) and the second sliding seat (213) are fitted together, the first insertion rod (2112) is inserted into the first insertion hole (2113) to compress the first spring (2114), so that the first spring (2114) accumulates potential energy; At the moment when the current direction of the electromagnet in the first electromagnetic plate (216) is switched, the first spring (2114) releases the stored potential energy, pushing the first sliding seat (212) and the second sliding seat (213) to separate.

3. A strength testing device for cast steel products as claimed in claim 2, characterized in that: A fourth electromagnetic plate (219) and a fifth electromagnetic plate (2110) are respectively arranged on opposite sides of the first sliding seat (212) and the second sliding seat (213); the fourth electromagnetic plate (219) is mounted on the first sliding seat (212), the fifth electromagnetic plate (2110) is mounted on the second sliding seat (213), and a third electromagnetic plate (218) and a sixth electromagnetic plate (2111) are respectively arranged at both ends of the sliding groove (211); The third electromagnetic plate (218), the fourth electromagnetic plate (219), the fifth electromagnetic plate (2110) and the sixth electromagnetic plate (2111) are all provided with electromagnets therein, which are magnetic when energized and have different magnetic poles depending on the direction of the current.

4. A strength testing device for cast steel products as claimed in claim 3, characterized in that: The first supporting component (21) has two forms: A combined form, when in the combined form, the magnetic poles of the first electromagnetic plate (216) and the second electromagnetic plate (217) are opposite, and there is an attraction force between the two, so that they are combined together; the magnetic properties of the third electromagnetic plate (218) and the fourth electromagnetic plate (219) are the same, and there is a repulsion force between the two, so that the first sliding seat (212) is repelled away from the left end of the sliding groove (211); the magnetic properties of the fifth electromagnetic plate (2110) and the sixth electromagnetic plate (2111) are the same, and there is a repulsion force between the two, so that the second sliding seat (213) is repelled away from the right end of the sliding groove (211), so that the first sliding seat (212) and the second sliding seat (213) are in contact with each other; Separation mode, when in the separation mode, the first electromagnetic plate (216) and the second electromagnetic plate (217) have the same magnetic poles, and there is a repulsive force between the two, thereby quickly separating; the third electromagnetic plate (218) and the fourth electromagnetic plate (219) have opposite magnetic properties, and there is an attractive force between the two, thereby attracting the first sliding seat (212) close to the left end of the sliding groove (211); the fifth electromagnetic plate (2110) and the sixth electromagnetic plate (2111) have opposite magnetic properties, and there is an attractive force between the two, thereby attracting the second sliding seat (213) close to the right end of the sliding groove (211), so that the first sliding seat (212) and the second sliding seat (213) are separated.

5. A strength testing device for cast steel products as claimed in claim 3, characterized in that: A second plug rod (2116) is provided at the left end of the sliding groove (211), a second plug hole (2115) corresponding to the second plug rod (2116) is provided on the first sliding seat (212), a second spring (2117) is provided on the second plug rod (2116), two ends of the second spring (2117) are respectively connected to the end of the sliding groove (211) and the first sliding seat (212), and when the first sliding seat (212) and the second sliding seat (213) are fitted together, the second spring (2117) is in a stretched state; At the moment when the current direction of the electromagnet in the third electromagnetic plate (218) is switched, the second spring (2117) releases the stored potential energy, dragging the first sliding seat (212) toward the end of the sliding groove (211), thereby separating the first sliding seat (212) and the second sliding seat (213).

6. A strength testing device for cast steel products as claimed in claim 3, characterized in that: A third plug rod (2119) is provided at the right end of the sliding groove (211), a third plug hole (2118) corresponding to the third plug rod (2119) is provided on the second sliding seat (213), a third spring (2120) is provided on the third plug rod (2119), the third spring (2120) is connected to the end of the sliding groove (211) and the second sliding seat (213), and when the first sliding seat (212) and the second sliding seat (213) are fitted together, the third spring (2120) is in a stretched state; At the moment when the current direction of the electromagnet in the fifth electromagnetic plate (2110) is switched, the third spring (2120) releases the stored potential energy, dragging the second sliding seat (213) toward the end of the sliding groove (211), thereby separating the first sliding seat (212) and the second sliding seat (213).

7. A strength testing device for cast steel products as claimed in claim 1, characterized in that: A first bearing notch (214) is provided at the top of the first sliding seat (212), and a second bearing notch (215) is provided at the top of the second sliding seat (213); when the first sliding seat (212) and the second sliding seat (213) are tightly pressed together, the first bearing notch (214) and the second bearing notch (215) are combined together to form a bearing groove, and the bearing groove is used to receive an end of a workpiece.

8. A strength testing device for cast steel products as claimed in claim 7, characterized in that: A lifting support assembly (23) is arranged between the first support assembly (21) and the second support assembly (22), the lifting support assembly (23) comprising a lifting groove (231) provided on the detection platform (1), a first lifting cylinder (232) being arranged in the lifting groove (231), an output end of the first lifting cylinder (232) pointing vertically upward and connected to a lifting plate (233), the lifting plate (233) matching the size of the lifting groove (231).

9. A strength testing device for cast steel products as claimed in claim 8, characterized in that: When the output end of the first lifting cylinder (232) is in a retracted state, the lifting plate (233) is embedded in the lifting groove (231); When the output end of the first lifting cylinder (232) is fully extended, the lifting plate (233) moves to be flush with the first sliding seat (212), so that when a workpiece is placed on the lifting plate (233), the end of the workpiece is opposite to the first bearing notch (214) and the second bearing notch (215), so that the first supporting assembly (21) can clamp the workpiece; After the first support assembly (21) clamps the workpiece, the lifting support assembly (23) is reset to avoid affecting the action of the pressing mechanism.

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