Drop hammer impact test equipment and control method and control device thereof

Abstract

The embodiment of the invention provides drop hammer impact test equipment and a control method and device thereof. The drop hammer impact test equipment comprises a test platform and a drop hammer impact assembly, the drop hammer impact assembly comprises a drop hammer body and a drop hammer ball head, the drop hammer body is arranged on the at least one pair of stand columns in a sliding mode, and the drop hammer ball head is arranged on the lower surface of the drop hammer body and used for impacting a test piece; the telescopic assembly is horizontally arranged in the hollow structure of the drop hammer body; the telescopic assembly is configured to retract towards the center of the drop hammer body in the horizontal direction, so that the drop hammer impact assembly slides up and down in the vertical direction; and the telescopic assembly is configured to extend towards the stand column in the horizontal direction and be clamped with the stand column, so that the drop hammer impact assembly is fixed above the test supporting pedestal. According to the drop hammer impact test equipment and the control method and the control device thereof, the test efficiency of a drop hammer test can be improved.

Description

Technical Field

[0001] The present application belongs to the field of testing technology, and in particular relates to a drop hammer impact testing device and a control method and a control device thereof. Background Art

[0002] In the current drop weight impact test technology, a partition is usually used to prevent the secondary impact of the drop weight ball head. In order to ensure the blocking effect, the partition should be designed to be thicker and have a fixed height difference with the test piece. If the secondary rebound height of the drop weight ball head is low, the partition will not be able to effectively prevent the drop weight ball head from impacting the test piece again, that is, the effect of preventing secondary impact is not good. Summary of the invention

[0003] In view of this, an embodiment of the present application provides a drop hammer impact testing device and a control method and a control device thereof, which can improve the test efficiency of the drop hammer impact.

[0004] In the first aspect, a drop hammer impact test device is provided, comprising: a test platform and a drop hammer impact assembly; the test platform comprises a base, a top plate and at least one pair of columns arranged between the base and the top plate, a test support pedestal is arranged on the base, the test support pedestal is used to place the test piece, and each pair of columns in the at least one pair of columns is arranged on both sides of the test support platform in a horizontal direction; the drop hammer impact assembly comprises: a drop hammer body and a drop hammer ball head, the drop hammer body is slidably arranged on at least one pair of columns, and the drop hammer ball head is arranged on the lower surface of the drop hammer body for impacting the test piece; a telescopic assembly is horizontally arranged in the hollow structure of the drop hammer body; the telescopic assembly is configured to be able to retract toward the center of the drop hammer body in a horizontal direction, so that the drop hammer impact assembly slides up and down in a vertical direction; and the telescopic assembly is configured to be able to extend toward the column in a horizontal direction and engage with the column, so that the drop hammer impact assembly is fixed above the test support pedestal.

[0005] In this embodiment, the drop hammer impact assembly includes a drop hammer body and a drop hammer ball head arranged on the lower surface of the drop hammer body, and the drop hammer body is arranged on at least one pair of columns between the base and the top plate of the test platform. In addition, the drop hammer impact assembly also includes a telescopic assembly arranged in the hollow structure of the drop hammer body, and the telescopic assembly is configured to be able to retract toward the center of the drop hammer body in the horizontal direction, so that the drop hammer impact assembly slides up and down in the vertical direction, and the telescopic assembly is configured to be able to extend toward the column in the horizontal direction and engage with the column, so that the drop hammer impact assembly is fixed above the test support pedestal. By controlling the telescopic assembly to extend toward the column in the horizontal direction and engage with the column during the upward rebound process of the drop hammer impact assembly, the secondary impact of the drop hammer ball head on the test piece can be effectively reduced, thereby ensuring the authenticity and reliability of the test data and improving the test efficiency of the drop hammer impact.

[0006] In one possible implementation, the telescopic assembly includes a metal rod and an elastic element connected in a horizontal direction, and the outer periphery of the metal rod is wrapped with an excitation coil; the excitation coil is used to generate a magnetic field when the drop hammer impact assembly is energized, and to remove the magnetic field when the drop hammer impact assembly is de-energized; the elastic element is used to be in a compressed state when the excitation coil generates a magnetic field, and to be in a rebound state when the excitation coil removes the magnetic field; the metal rod is used to retract toward the center of the drop hammer body when the elastic element is in a compressed state, and to extend toward the column when the elastic element is in a rebound state.

[0007] In this embodiment, the magnetic field or the demagnetized magnetic field generated by the excitation coil sleeved on the metal rod causes the elastic element to compress or rebound, thereby causing the metal rod to retract or extend, so that the metal rod and the column can be engaged during the upward rebound of the drop hammer impact assembly, which can effectively reduce the secondary impact of the drop hammer ball head on the test piece, ensure the authenticity and reliability of the test data, and improve the test efficiency of the drop hammer impact.

[0008] In a possible implementation, the metal rod is sleeved on a metal sleeve, and the excitation coil is wrapped on the metal sleeve.

[0009] In this embodiment, a metal sleeve is put on the metal rod so that the excitation coil is wrapped on the metal sleeve, thereby enhancing the magnetic field generated by the excitation coil.

[0010] In a possible implementation manner, the metal rod is made of soft iron.

[0011] In this embodiment, by using a metal rod made of soft iron, the metal rod can be better demagnetized after the drop hammer impact assembly is powered off, thereby reducing the possibility that the metal rod cannot be engaged with the column.

[0012] In a possible implementation, the drop hammer ball head is connected to the drop hammer body in a detachable manner.

[0013] In this embodiment, the drop hammer ball head is connected to the drop hammer body in a detachable manner, so that the drop hammer ball head can be replaced to meet different testing requirements.

[0014] In a possible implementation, a first side surface of the column close to the telescopic assembly is provided with a tooth-shaped groove continuous in the vertical direction, and an end of the telescopic assembly close to the column is provided with a limiting protrusion matching the tooth-shaped groove; the telescopic assembly and the column are engaged by inserting the limiting protrusion into the tooth-shaped groove.

[0015] In this embodiment, in the event of a rebound of the drop hammer impact assembly, the telescopic assembly and the column can be engaged by inserting the limiting protrusion into the toothed groove, thereby fixing the drop hammer impact assembly above the test support pedestal, reducing the possibility of a secondary impact on the test piece.

[0016] In one possible implementation, a slide rail is provided on at least one side surface of the column except the first side surface, the drop hammer body is provided with a through hole extending along the vertical direction, the column passes through the through hole, and a steel ball matching the slide rail is provided on the wall of the through hole opposite to at least one side surface; the drop hammer body is slidably set on the column through the cooperation of the steel ball and the slide rail.

[0017] In this embodiment, the drop hammer body is slidably arranged on the column through the cooperation of steel balls and slide rails, so that the drop hammer body can slide up and down in the vertical direction, thereby realizing the drop hammer impact test on the test piece.

[0018] In one possible implementation, the drop hammer impact testing equipment also includes a lifting device; the lifting device includes a motor, a winding machine and a steel rope, the motor and the winding machine are arranged on the top plate, one end of the steel rope is wound on the winding machine, and the other end of the steel rope is connected to the drop hammer impact assembly through a hook arranged on the upper surface of the drop hammer body; the motor is used to drive the winding machine so that the steel rope pulls the drop hammer impact assembly to slide up and down in the vertical direction.

[0019] In this embodiment, the motor drives the winding machine so that the steel rope pulls the drop hammer impact assembly to slide up and down in the vertical direction, which enables the drop hammer impact assembly to slide downward at any height to impact the test piece, thereby improving the versatility of the drop hammer impact test.

[0020] In one possible implementation, the drop weight impact testing equipment further includes a measuring device for measuring the displacement and / or velocity of the drop weight impact assembly; and / or the measuring device is for measuring the force generated by the drop weight impact assembly and / or the force exerted on the test piece.

[0021] In this embodiment, by arranging a measuring device to obtain the displacement and / or velocity of the drop hammer impact assembly, it is helpful to control the extension of the telescopic assembly and engage with the column when the drop hammer impact assembly rebounds, thereby fixing the drop hammer impact assembly above the test support pedestal, effectively reducing the probability of secondary impact of the drop hammer impact assembly on the test piece and improving the test efficiency of the drop hammer impact.

[0022] In a possible implementation, the test platform further includes a baffle, which is arranged around the base.

[0023] In this embodiment, by arranging a baffle on the periphery of the base, it is possible to reduce the damage to the tester caused by the splashing of fragments or debris generated during the test.

[0024] In a possible implementation, an observation window is provided on the front side of the baffle.

[0025] In this embodiment, an observation window is provided on the front side of the baffle, so that the test personnel can observe the impact test status of the test piece in real time through the observation window.

[0026] In a possible implementation, the drop hammer impact testing device further includes a control device, which is used to control the telescopic assembly to retract horizontally toward the center of the drop hammer body and / or extend horizontally toward the column.

[0027] In this embodiment, the control device controls the telescopic assembly to retract horizontally toward the center of the drop hammer body and / or extend horizontally toward the column, which effectively reduces the probability of secondary impact of the drop hammer impact assembly on the test piece and improves the test efficiency of the drop hammer impact.

[0028] In the second aspect, a control method for a drop hammer impact test equipment is provided, wherein the drop hammer impact test equipment comprises a test platform and a drop hammer impact assembly; the test platform comprises a base, a top plate and at least one pair of columns arranged between the base and the top plate, a test support pedestal is arranged on the base, the test support pedestal is used to place the test piece, and each pair of columns in the at least one pair of columns is arranged on both sides of the test support platform in a horizontal direction; the drop hammer impact assembly comprises: a drop hammer body and a drop hammer ball head, the drop hammer body is slidably arranged on at least one pair of columns, the drop hammer ball head is arranged on the lower surface of the drop hammer body, and is used to impact the test piece; a telescopic assembly is horizontally arranged in the hollow structure of the drop hammer body; the control method comprises: controlling the telescopic assembly to retract toward the center of the drop hammer body in a horizontal direction, so that the drop hammer impact assembly slides up and down in a vertical direction; and controlling the telescopic assembly to extend toward the column in a horizontal direction and engage with the column, so that the drop hammer impact assembly is fixed above the test support pedestal.

[0029] In one possible implementation, the drop hammer impact test equipment also includes a lifting device; the lifting device includes a motor, a winding machine and a steel rope, the motor and the winding machine are arranged on the top plate, one end of the steel rope is wound on the winding machine, and the other end of the steel rope is connected to the drop hammer impact assembly through a hook arranged on the upper surface of the drop hammer body, and the telescopic assembly is controlled to retract in the horizontal direction toward the center of the drop hammer body so that the drop hammer impact assembly slides up and down in the vertical direction, including: when the telescopic assembly is controlled to retract in the horizontal direction toward the center of the drop hammer body, the motor is controlled to drive the winding machine so that the steel rope pulls the drop hammer impact assembly to slide up and down in the vertical direction.

[0030] In one possible implementation, the drop hammer impact test equipment also includes a measuring device, which is used to measure the displacement and / or velocity of the drop hammer impact assembly, control the telescopic assembly to extend toward the column in a horizontal direction and engage with the column, so that the drop hammer impact assembly is fixed above the test support pedestal, including: when the direction of the displacement and / or velocity of the drop hammer impact assembly measured by the measuring device changes, control the telescopic assembly to extend toward the column in a horizontal direction and engage with the column, so that the drop hammer impact assembly is fixed above the test support pedestal.

[0031] In one possible implementation, the telescopic assembly is controlled to retract horizontally toward the center of the drop hammer body so that the drop hammer impact assembly slides up and down vertically, including: controlling the telescopic assembly to retract horizontally toward the center of the drop hammer body so that the drop hammer impact assembly slides downward from a preset height to impact the test piece.

[0032] In one possible implementation, before controlling the telescopic assembly to retract in a horizontal direction toward the center of the drop hammer body so that the drop hammer impact assembly slides downward from a preset height to impact the test piece, the control method also includes: controlling the telescopic assembly to retract in a horizontal direction toward the center of the drop hammer body so that the drop hammer impact assembly rises or falls to a preset height; when the drop hammer impact assembly rises or falls to a preset height, controlling the telescopic assembly to extend in a horizontal direction toward the column and engage with the column so that the drop hammer impact assembly is fixed at a preset height above the test support pedestal.

[0033] In a possible implementation, the control method further includes: obtaining a preset height according to the mass of the ball head of the drop hammer.

[0034] In one possible implementation, the telescopic assembly includes a metal rod and an elastic element connected in a horizontal direction, and the outer periphery of the metal rod is wrapped with an excitation coil; the telescopic assembly is controlled to retract in a horizontal direction toward the center of the drop hammer body, including: controlling the drop hammer impact assembly to be energized, so that the excitation coil generates a magnetic field, and the elastic element is in a compressed state, thereby causing the metal rod to retract toward the center of the drop hammer body; controlling the telescopic assembly to extend in a horizontal direction toward the column and engage with the column, including: controlling the drop hammer impact assembly to be de-energized, so that the excitation coil removes the magnetic field, and the elastic element is in a rebound state, thereby causing the metal rod to extend toward the column.

[0035] In a third aspect, a control device for a drop hammer impact test equipment is provided, wherein the drop hammer impact test equipment comprises a test platform and a drop hammer impact assembly; the test platform comprises a base, a top plate and at least one pair of columns arranged between the base and the top plate, a test support pedestal is arranged on the base, the test support pedestal is used to place the test piece, and each pair of columns in the at least one pair of columns is arranged on both sides of the test support platform in a horizontal direction; the drop hammer impact assembly comprises: a drop hammer body and a drop hammer ball head, the drop hammer body is slidably arranged on at least one pair of columns, the drop hammer ball head is arranged on the lower surface of the drop hammer body, and is used to impact the test piece; a telescopic assembly is horizontally arranged in the hollow structure of the drop hammer body; the control device comprises: a control module, which is used to control the telescopic assembly to retract toward the center of the drop hammer body in a horizontal direction, so that the drop hammer impact assembly slides up and down in a vertical direction; and, to control the telescopic assembly to extend toward the column in a horizontal direction and engage with the column, so that the drop hammer impact assembly is fixed above the test support pedestal.

[0036] In one possible implementation, the drop hammer impact testing equipment also includes a lifting device; the lifting device includes a motor, a winding machine and a steel rope, the motor and the winding machine are arranged on the top plate, one end of the steel rope is wound on the winding machine, and the other end of the steel rope is connected to the drop hammer impact assembly through a hook arranged on the upper surface of the drop hammer body, and the control module is specifically used to: when controlling the telescopic assembly to retract in the horizontal direction toward the center of the drop hammer body, control the motor to drive the winding machine so that the steel rope pulls the drop hammer impact assembly to slide up and down in the vertical direction.

[0037] In one possible implementation, the drop weight impact testing equipment also includes a measuring device, which is used to measure the displacement and / or velocity of the drop weight impact assembly, and the control device also includes: an input module, which is used to obtain the displacement and / or velocity of the drop weight impact assembly measured by the measuring device; the control module is specifically used to: when monitoring that the direction of the displacement and / or velocity of the drop weight impact assembly received by the input module changes, control the telescopic assembly to extend horizontally toward the column and engage with the column, so that the drop weight impact assembly is fixed above the test support pedestal.

[0038] In a possible implementation, the control module is specifically used to control the telescopic assembly to retract horizontally toward the center of the drop hammer body, so that the drop hammer impact assembly slides downward from a preset height to impact the test piece.

[0039] In one possible implementation, the control module is specifically used to: before controlling the telescopic assembly to retract horizontally toward the center of the drop hammer body so that the drop hammer impact assembly slides downward from a preset height to impact the test piece, control the telescopic assembly to retract horizontally toward the center of the drop hammer body so that the drop hammer impact assembly rises or falls to a preset height; when the drop hammer impact assembly rises or falls to a preset height, control the telescopic assembly to extend horizontally toward the column and engage with the column so that the drop hammer impact assembly is fixed at a preset height above the test support pedestal.

[0040] In a possible implementation, the input module is further used to obtain a preset height according to the mass of the ball head of the drop hammer.

[0041] In one possible implementation, the telescopic assembly includes a metal rod and an elastic element connected in a horizontal direction, and the outer periphery of the metal rod is wrapped with an excitation coil; the control module is specifically used to: control the drop hammer impact assembly to be energized, so that the excitation coil generates a magnetic field, and the elastic element is in a compressed state, thereby causing the metal rod to retract toward the center of the drop hammer body; control the drop hammer impact assembly to be de-energized, so that the excitation coil removes the magnetic field, and the elastic element is in a rebound state, thereby causing the metal rod to extend toward the direction of the column.

[0042] In a fourth aspect, a computer-readable storage medium is provided for storing a computer program, wherein the computer program enables a computer to execute the control method in the second aspect.

[0043] In a fifth aspect, a chip is provided, comprising a processor for calling and running a computer program from a memory, so that a device equipped with the chip executes the control method in the second aspect.

[0044] In a sixth aspect, a computer program is provided, which enables a computer to execute the control method in the second aspect.

[0045] In the seventh aspect, a program product is provided, comprising a computer-readable code, or a non-volatile computer-readable storage medium carrying the computer-readable code. When the computer-readable code runs in an electronic device, a processor in the electronic device executes the control method as in the second aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 A front view of a drop weight impact testing device according to an embodiment of the present application is shown.

[0047] Figure 2 A schematic exploded view of a drop hammer impact assembly according to an embodiment of the present application is shown.

[0048] Figure 3 A schematic diagram showing the retraction of the metal rod according to an embodiment of the present application.

[0049] Figure 4 A schematic diagram showing the extension of a metal rod according to an embodiment of the present application.

[0050] Figure 5 An axial view of a drop weight impact testing apparatus according to an embodiment of the present application is shown.

[0051] Figure 6 A schematic block diagram of a control method for a drop weight impact testing device according to an embodiment of the present application is shown.

[0052] Figure 7 A schematic flow chart showing a control method of a drop weight impact testing device according to an embodiment of the present application.

[0053] Figure 8 A schematic block diagram of a control device for a drop weight impact testing device according to an embodiment of the present application is shown.

[0054] Fig. 9 Another schematic block diagram of the control device of the drop weight impact testing equipment according to an embodiment of the present application is shown.

[0055] Fig.10 Another schematic block diagram of the control device of the drop weight impact testing equipment according to the embodiment of the present application is shown. DETAILED DESCRIPTION

[0056] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0057] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as those commonly understood by technicians in the technical field to which this application belongs; the terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order or a primary and secondary relationship.

[0058] The directional words appearing in the following description are all directions shown in the figures, and do not limit the specific structure of this application. In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0059] Reference to "embodiments" in this application means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described in this application may be combined with other embodiments.

[0060] The term "and / or" in this application is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this application generally indicates that the associated objects before and after are in an "or" relationship.

[0061] The term "multiple" as used in this application refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple sheets" refers to more than two sheets (including two sheets).

[0062] The drop hammer impact test, also known as the drop weight test, is to apply an impact load to the test piece by converting gravitational potential energy into kinetic energy. Specifically, the ball head of the drop hammer can be dropped on the test piece from different heights to obtain the relationship between the impact energy and the damage rate of the test piece. The drop hammer impact test can be applied to various application scenarios with collisions. For example, the hood of a car may be impacted while it is driving. Therefore, part of the material on the hood can be used as a test piece for the drop hammer impact test.

[0063] In the drop weight impact test, after the drop weight ball head completes the first impact on the test piece, it will bounce up quickly and fall down, which may impact the test piece for the second time. If a secondary impact occurs in the drop weight impact test, the relationship between the impact energy and damage characteristics of the test piece cannot be accurately measured. Therefore, the secondary impact on the test piece should be avoided as much as possible in the drop weight impact test.

[0064] In the current drop weight impact test for preventing secondary impact, a partition is usually used to prevent the secondary impact of the drop weight ball head. In order to ensure the blocking effect, the partition should be designed to be thicker and have a fixed height difference with the test piece. If the secondary rebound height of the drop weight ball head is low, the partition will not be able to effectively prevent the drop weight ball head from impacting the test piece again, that is, the effect of preventing secondary impact is not good.

[0065] Therefore, an embodiment of the present application provides a drop hammer impact test device, which includes a test platform and a drop hammer impact assembly, wherein the drop hammer impact assembly includes a drop hammer body and a drop hammer ball head arranged on the lower surface of the drop hammer body, and the drop hammer body is slidably arranged on at least one pair of columns between the base and the top plate of the test platform. In addition, the drop hammer impact assembly also includes a telescopic assembly arranged in the hollow structure of the drop hammer body, and the telescopic assembly is configured to be able to retract toward the center of the drop hammer body in the horizontal direction so that the drop hammer impact assembly slides up and down in the vertical direction, and the telescopic assembly is configured to be able to extend toward the column in the horizontal direction and engage with the column, so that the drop hammer impact assembly is fixed above the test support pedestal. By controlling the telescopic assembly to extend toward the column in the horizontal direction and engage with the column during the upward rebound process of the drop hammer impact assembly, the secondary impact of the drop hammer ball head on the test piece can be effectively reduced, thereby ensuring the authenticity and reliability of the test data and improving the test efficiency of the drop hammer impact.

[0066] Figure 1 FIG. 2 shows a front view of a drop weight impact test device according to an embodiment of the present application. Figure 1 As shown, the drop weight impact testing device 1 includes a test platform 10 and a drop weight impact assembly 20 .

[0067] The test platform 10 includes a base 11, a top plate 12 and at least one pair of columns 13 arranged between the base 11 and the top plate 12. A test support platform 14 is arranged on the base 11. The test support platform 14 is used to place the test piece. Each pair of columns 13 in the at least one pair of columns 13 is arranged on both sides of the test support platform 14 along the horizontal direction X.

[0068] The drop hammer impact assembly 20 includes a drop hammer body 21 and a drop hammer ball head 22. The drop hammer ball head 22 is arranged on the lower surface of the drop hammer body 21 and is used to impact the test piece. The drop hammer body 21 is slidably arranged on at least one pair of columns 13. The drop hammer impact assembly 20 also includes a telescopic assembly 23, which is arranged in the hollow structure of the drop hammer body 21. The telescopic assembly 23 is configured to be able to retract toward the center of the drop hammer body 21 along the horizontal direction X, so that the drop hammer impact assembly 20 slides up and down along the vertical direction Y; the telescopic assembly 23 is also configured to be able to extend toward the column 13 along the horizontal direction X and engage with the column 13, so that the drop hammer impact assembly 20 is fixed above the test support seat 14.

[0069] First, it should be explained that the telescopic component 23 can be understood as a variable size in the horizontal direction X, for example, it can be longer or shorter. The basic principle is based on the elastic deformation characteristics of the material, that is, when an external force acts on the material, the material will undergo elastic deformation, that is, the shape and size will change, but when the external force disappears, the material will return to its original shape and size. In other words, the telescopic component 23 in the embodiment of the present application can be made of elastic material.

[0070] Secondly, the drop hammer body 21 in the embodiment of the present application can be a square block, and its interior can be a partially hollow structure, that is, the hollow structure has no opening on the surface of the drop hammer body 21. In addition, the horizontal direction X in the embodiment of the present application can be the length direction of the drop hammer body 21. The two ends of the drop hammer body 21 along the length direction are respectively sleeved on the columns 13 on both sides of the test support pedestal 14.

[0071] Finally, the telescopic component 23 is engaged with the column 13. For example, the telescopic component 23 and the column 13 can be directly limited by concave-convex fit. For another example, the telescopic component 23 and the column 13 can be limited by L-shaped and L-shaped interlocking 180° clockwise. In other words, the embodiment of the present application does not limit the implementation method of the engagement of the telescopic component 23 and the column 13.

[0072] In this embodiment, the drop hammer impact assembly 20 includes a drop hammer body 21 and a drop hammer ball head 22 arranged on the lower surface of the drop hammer body 21. The drop hammer body 21 is arranged on at least one pair of columns 13 between the base 11 and the top plate 12 of the test platform 10. In addition, the drop hammer impact assembly 20 also includes a telescopic assembly 23 arranged in the hollow structure of the drop hammer body 21. The telescopic assembly 23 is configured to be able to retract toward the center of the drop hammer body 21 along the horizontal direction X, so that the drop hammer impact assembly 20 slides up and down along the vertical direction Y, and the telescopic assembly 23 is configured to be able to extend toward the column 13 along the horizontal direction X and engage with the column 13, so that the drop hammer impact assembly 20 is fixed above the test support platform 14. By controlling the telescopic assembly 23 to extend toward the column 13 along the horizontal direction X and engage with the column 13 during the upward rebound process of the drop hammer impact assembly 20, the secondary impact of the drop hammer ball head 22 on the test piece can be effectively reduced, thereby ensuring the authenticity and reliability of the test data and improving the test efficiency of the drop hammer impact.

[0073] In some embodiments, the telescopic component 23 can be telescoped in the horizontal direction X under the action of electromagnetic force. That is, the telescopic component 23 can be a magnetostrictive element. In other embodiments, the telescopic component 23 can also be telescoped in the horizontal direction X under the action of pressure.

[0074] The following will mainly describe the technical solution by taking the telescopic component 23 telescopically extending and retracting along the horizontal direction X under the action of electromagnetic force as an example, but those skilled in the art will understand that the embodiments of the present application are not limited thereto.

[0075] Figure 2 An exploded schematic diagram of a drop weight impact assembly 20 according to an embodiment of the present application is shown. Figure 3 A schematic diagram showing the retraction of the metal rod 231 according to the embodiment of the present application is shown. Figure 4 FIG. 2 shows a schematic diagram of the metal rod 231 extending in an embodiment of the present application. Figure 2 As shown, the telescopic assembly 23 includes a metal rod 231 and an elastic element 232 connected along the horizontal direction X. The outer periphery of the metal rod 231 is wrapped with an excitation coil 233. Figure 1 and Figure 2 It can be seen that the metal rod 231 is closer to the column 13 than the elastic element 232. The excitation coil 233 is used to generate a magnetic field when the drop hammer impact assembly 20 is powered on, and to remove the magnetic field when the drop hammer impact assembly 20 is powered off; the elastic element 232 is used to be in a compressed state when the excitation coil 233 generates a magnetic field, and to be in a rebound state when the excitation coil 233 removes the magnetic field; the metal rod 231 is used to retract toward the center of the drop hammer body 21 when the elastic element 232 is in a compressed state, and to extend toward the column 13 when the elastic element 232 is in a rebound state.

[0076] Those skilled in the art understand that when the elastic element 232 is compressed or rebounded, one end of the elastic element 232 must be fixed, that is, one end of the elastic element 232 close to the center of the drop hammer impact assembly 20 is fixed in the hollow structure of the drop hammer impact assembly 20, and the other end of the elastic element 232 away from the center of the drop hammer impact assembly 20 is fixedly connected to one end of the metal rod 231. The other end of the metal rod 231 is a free end.

[0077] Optionally, in the embodiment of the present application, the elastic element 232 may be made of a metal material having elasticity. For example, the material of the elastic element 232 is the same as that of the metal rod 231 .

[0078] In some embodiments, the elastic element 232 is a spring.

[0079] In some other embodiments, the elastic element 232 may be made of iron.

[0080] Optionally, an independent power supply and a switch are provided in the drop weight impact assembly 20. Under the control of the switch, the drop weight impact assembly 20 is powered on or off.

[0081] In one example, when the power switch in the drop hammer impact assembly 20 is closed, the metal rod 231 becomes magnetic due to electromagnetic induction and can attract the elastic element 232. At this time, the elastic element 232 is compressed, the metal rod 231 retracts, and the drop hammer impact assembly 20 slides upward or downward along the vertical direction Y. Figure 3 shown.

[0082] In another example, the power switch in the drop hammer impact assembly 20 is turned off, the electromagnetic phenomenon in the excitation coil 233 disappears, and the elastic element 232 rebounds, causing the metal rod 231 to extend and engage with the column 13, such as Figure 4 shown.

[0083] In this embodiment, the magnetic field or the demagnetized magnetic field generated by the excitation coil 233 sleeved on the metal rod 231 causes the elastic element 232 to compress or rebound, thereby causing the metal rod 231 to retract or extend, so that the metal rod 231 can be engaged with the column 13 during the upward rebound of the drop hammer impact assembly 20, which can effectively reduce the secondary impact of the drop hammer ball head 22 on the test piece, ensure the authenticity and reliability of the test data, and improve the test efficiency of the drop hammer impact.

[0084] Continue to see Figure 2 The metal rod 231 can be sleeved on a metal sleeve 234 , and the excitation coil 233 is wrapped on the metal sleeve 234 .

[0085] Optionally, the material of the metal sleeve 234 can be the same as the material of the metal rod 231. For example, the material of the metal rod 231 is iron, and the material of the metal sleeve 234 is also iron.

[0086] In this embodiment, a metal sleeve 234 is sleeved on the metal rod 231 so that the excitation coil 233 is wrapped on the metal sleeve 234 , thereby enhancing the magnetic field generated by the excitation coil 233 .

[0087] Optionally, in the embodiment of the present application, the metal rod 231 is made of soft iron.

[0088] In this embodiment, by using the metal rod 231 made of soft iron, the metal rod 231 can be better demagnetized after the drop hammer impact assembly 20 is powered off, thereby reducing the possibility that the metal rod 231 cannot be engaged with the column 13.

[0089] In some embodiments, the drop hammer ball head 22 is connected to the drop hammer body 21 by a detachable connection. For example, the drop hammer ball head 22 and the drop hammer body 21 can be connected by threads. For another example, the drop hammer ball head 22 and the drop hammer body 21 can be connected by a pin. For another example, the drop hammer ball head 22 and the drop hammer body 21 can be snap-fitted. The embodiment of the present application does not limit the connection method between the drop hammer ball head 22 and the drop hammer body 21, and the main thing is that the two can be disassembled.

[0090] In this embodiment, the drop hammer ball head 22 is connected to the drop hammer body 21 in a detachable manner, so that the drop hammer ball head 22 can be replaced to meet different testing requirements.

[0091] See also Figures 2 to 4 A first side surface 131 of the column 13 close to the telescopic component 23 is provided with a tooth-shaped groove 1311 which is continuous in the vertical direction Y, and a limiting protrusion 235 is provided at the end of the telescopic component 23 close to the column 13. The telescopic component 23 and the column 13 are engaged with each other by inserting the limiting protrusion 235 into the tooth-shaped groove 1311.

[0092] In the embodiment of the present application, the column 13 may be a square columnar structure. That is, the column 13 may include four side surfaces, and the column 13 is inserted into the drop hammer body 21, so that the drop hammer body 21 can surround the four side surfaces of the column 13 at a certain height. The first side surface 131 may refer to a surface facing the center of the drop hammer body 21.

[0093] Optionally, in the embodiment of the present application, the radial dimension of the end of the metal rod 231 gradually decreases to form a tip, and the tip can be inserted into the tooth-shaped groove 1311 on the first side surface 131 .

[0094] In some embodiments, the first side surface 131 is provided with tooth-shaped grooves 1311 from top to bottom. In other embodiments, the first side surface 131 is provided with tooth-shaped grooves 1311 on the portion above the test support stand 14 .

[0095] In this embodiment, in the event that the drop hammer impact assembly 20 rebounds, the telescopic assembly 23 and the column 13 can be engaged by inserting the limiting protrusion 235 into the toothed groove 1311, thereby fixing the drop hammer impact assembly 20 above the test support pedestal 14, reducing the possibility of the test piece being impacted a second time.

[0096] Continue to see Figures 2 to 4The second side surface 132 of the column 13 is provided with a slide rail 1321, and the second side surface 132 is arranged opposite to the first side surface 131. The drop hammer body 21 is provided with a through hole 211 penetrating in the vertical direction, and the column 13 passes through the through hole 211. A steel ball 24 matching the slide rail 1321 is arranged on the wall of the through hole 211 opposite to the second side surface 132, and the drop hammer body 21 is slidably arranged on the column 13 through the cooperation of the steel ball 24 and the slide rail 1321.

[0097] Optionally, other sides of the column 13 except the first side 131 and the second side 132 may also be provided with slide rails. For example, the third side and the fourth side of the column 13 may also be provided with slide rails, the third side and the fourth side are arranged opposite to each other, and the arrangement direction of the third side and the fourth side is perpendicular to the arrangement direction of the first side and the second side. In other embodiments, more than one slide rail may be provided on one side of the column 13, and it should be understood that the position and number of the steel balls should match the position and number of the slide rails.

[0098] In this embodiment, the drop hammer body 21 is slidably arranged on the column 13 through the cooperation of the steel ball 24 and the slide rail 1321, so that the drop hammer body 21 can slide up and down along the vertical direction Y, thereby realizing the drop hammer impact test on the test piece.

[0099] Figure 5 FIG. 2 shows an axial view of a drop weight impact test device 1 according to an embodiment of the present application. Figure 5 As shown, in addition to the test platform 10 and the drop hammer impact assembly 20, the drop hammer impact test device 1 also includes a lifting device 30, which includes a motor 31, a winding machine 32 and a steel rope 33. The motor 31 and the winding machine 32 are arranged on the top plate 12, one end of the steel rope 33 is wound on the winding machine 32, and the other end of the steel rope 33 is connected to the drop hammer impact assembly 20 through a hook 212 arranged on the upper surface of the drop hammer body 21. The motor 31 is used to drive the winding machine 32 so that the steel rope 33 pulls the drop hammer impact assembly 20 to slide up and down along the vertical direction Y.

[0100] In this embodiment, the motor 31 drives the winding machine 32 so that the steel rope 33 pulls the drop hammer impact assembly 20 to slide up and down along the vertical direction Y, so that the drop hammer impact assembly 20 can slide downward at any height to impact the test piece, thereby improving the versatility of the drop hammer impact test.

[0101] Continue to see Figure 5 The drop weight impact testing device 1 further includes a measuring device 40, which is used to measure the displacement and / or velocity of the drop weight impact assembly 20; and / or, the measuring device 40 is used to measure the force generated by the drop weight impact assembly 20 and / or the force exerted on the test piece.

[0102] For example, the measuring device 40 may include two force sensors and a displacement sensor. Among them, one force sensor may be arranged below the test support pedestal 14 to measure the force exerted on the test piece; the other force sensor may be arranged on the drop hammer body 21 to measure the force exerted by the drop hammer impact assembly. Optionally, the force sensor may be a resistive strain force sensor. Its function is to convert the measured force into the strain of the elastic element, and then use the resistive strain effect to measure the strain, thereby indirectly measuring the magnitude of the force.

[0103] For another example, the measuring device 40 may further include a displacement sensor. The displacement sensor may be arranged on the test platform to measure the displacement and running speed of the drop weight impact assembly 20. Optionally, the displacement sensor may use a laser rangefinder to read the displacement of the drop weight impact assembly 20 in real time, and then calculate the running speed of the drop weight impact assembly 20.

[0104] It should be understood that the arrangement position of the measuring device 40 is not limited. For example, a thin film sensor can be used and arranged on the drop hammer ball head 22. It only needs to monitor the force generated by the drop hammer ball head 22.

[0105] In this embodiment, by arranging a measuring device 40 to obtain the displacement and / or velocity of the drop hammer impact assembly, it is helpful to control the extension of the telescopic assembly 23 when the drop hammer impact assembly 20 rebounds, and engage with the column 12, thereby fixing the drop hammer impact assembly 20 above the test support pedestal 14, effectively reducing the probability of secondary impact of the drop hammer impact assembly 20 on the test piece and improving the test efficiency of the drop hammer impact.

[0106] Continue to see Figure 5 The test platform 10 further includes a baffle 15 , which is disposed around the base 11 .

[0107] In this embodiment, by arranging a baffle 15 on the periphery of the base 11, it is possible to reduce the damage to the tester caused by the splashing of fragments or debris generated during the test.

[0108] Continue to see Figure 5 An observation window 151 is provided on the front side of the baffle plate 15 .

[0109] In this embodiment, an observation window 151 is provided on the front side of the baffle 15 , so that the tester can observe the impact test status of the test piece in real time through the observation window 151 .

[0110] Continue to see Figure 5 The drop hammer impact testing device 1 further includes a control device 50 for controlling the telescopic assembly 23 to retract along the horizontal direction X toward the center of the drop hammer body 21 and / or to extend along the horizontal direction X toward the column 13 .

[0111] In this embodiment, the control device 50 controls the telescopic assembly 23 to retract along the horizontal direction X toward the center of the drop hammer body 21 and / or to extend along the horizontal direction X toward the column 13, thereby effectively reducing the probability of a secondary impact of the drop hammer impact assembly 20 on the test piece and improving the test efficiency of the drop hammer impact.

[0112] The present application also provides a control method for a drop weight impact test device. The drop weight impact test device can be as follows: Figures 1 to 5 The provided drop weight impact test device 1. The control method can be Figure 5 The control device 50 shown in FIG. Figure 6 As shown, the control method 2 includes:

[0113] S21, controlling the telescopic assembly to retract along the horizontal direction toward the center of the drop hammer body, so that the drop hammer impact assembly slides up and down along the vertical direction; and

[0114] S22, controlling the telescopic assembly to extend toward the column along the horizontal direction and engage with the column, so that the drop hammer impact assembly is fixed above the test support pedestal.

[0115] In one embodiment, S21, i.e., controlling the telescopic assembly to retract along the horizontal direction toward the center of the drop hammer body so that the drop hammer impact assembly slides up and down along the vertical direction, may include: while controlling the telescopic assembly to retract along the horizontal direction toward the center of the drop hammer body, controlling the motor to drive the winding machine so that the steel rope pulls the drop hammer impact assembly to slide up and down along the vertical direction.

[0116] In one embodiment, S22, i.e., controlling the telescopic assembly to extend along the horizontal direction toward the column and engage with the column so that the drop hammer impact assembly is fixed above the test support pedestal, includes: when the direction of the displacement and / or velocity of the drop hammer impact assembly measured by the measuring device changes, controlling the telescopic assembly to extend along the horizontal direction toward the column and engage with the column so that the drop hammer impact assembly is fixed above the test support pedestal.

[0117] In one embodiment, S21, i.e., controlling the telescopic assembly to retract along the horizontal direction toward the center of the drop hammer body so that the drop hammer impact assembly slides up and down along the vertical direction, includes: controlling the telescopic assembly to retract along the horizontal direction toward the center of the drop hammer body so that the drop hammer impact assembly slides downward from a preset height to impact the test piece.

[0118] In one embodiment, before controlling the telescopic assembly to retract along the horizontal direction toward the center of the drop hammer body so that the drop hammer impact assembly slides downward from a preset height to impact the test piece, the control method further includes: controlling the telescopic assembly to retract along the horizontal direction toward the center of the drop hammer body so that the drop hammer impact assembly rises or falls to the preset height; when the drop hammer impact assembly rises or falls to the preset height, controlling the telescopic assembly to extend along the horizontal direction toward the column and engage with the column so that the drop hammer impact assembly is fixed at the preset height above the test support pedestal.

[0119] In one embodiment, the control method 2 further includes: obtaining the preset height according to the mass of the drop hammer ball head.

[0120] Optionally, the preset height can be calculated manually and input to the control device 50 through a human-computer interaction interface, and then the control device 50 can directly obtain the preset height.

[0121] Optionally, the preset height may be calculated by combining the manually input dynamic potential energy obtained by the control device 50 with the mass of the drop hammer ball head 22 .

[0122] In one embodiment, S21, i.e., controlling the telescopic assembly to retract along the horizontal direction toward the center of the drop hammer body, includes: controlling the drop hammer impact assembly to be energized so that the excitation coil generates a magnetic field and the elastic element is in a compressed state, thereby causing the metal rod to retract toward the center of the drop hammer body; S22, i.e., controlling the telescopic assembly to extend toward the column along the horizontal direction and engage with the column, includes: controlling the drop hammer impact assembly to be deenergized so that the excitation coil removes the magnetic field and the elastic element is in a rebound state, thereby causing the metal rod to extend toward the column.

[0123] like Figure 7 As shown, the embodiment of the present application also provides a control method 3 of a drop weight impact test device. The control method 3 can be Figure 6 A specific implementation of the control method 2 shown.

[0124] Specifically, see Figure 7 , the control method 3 mainly includes:

[0125] S301, the metal rod stretches. Specifically, firstly, the power switch of the drop hammer impact assembly is turned off. At this time, due to the power failure, the electromagnetic phenomenon of the excitation coil disappears, and the elastic element rebounds, causing the metal rod to stretch and get stuck in the toothed groove of the column.

[0126] S302, input a predetermined height. Specifically, fix the test piece on the test support seat, select a suitable drop hammer ball head, fix it on the drop hammer body by screws, and input the height position where the drop hammer ball head needs to stay according to the test requirements.

[0127] S303, the drop hammer impact assembly slides to a predetermined height. Specifically, the up or down button is pressed, and the drop hammer impact assembly is powered on. Due to the electromagnetic effect, the metal rod becomes magnetic and can attract the elastic element. At this time, the elastic element is compressed, and the metal rod retracts. The entire drop hammer impact assembly rises or falls along the slide rail to a predetermined height through the lifting device according to the height required by the user.

[0128] S304, the metal rod stretches. Specifically, the power switch of the drop hammer impact assembly is turned off. At this time, due to power failure, the electromagnetic phenomenon of the excitation coil disappears, and the elastic element rebounds, causing the metal rod to stretch and get stuck in the toothed groove of the column.

[0129] The drop weight impact test can then begin.

[0130] S305, turning on the test power supply and the power supply of the drop hammer impact assembly at the same time.

[0131] S306, the metal rod retracts. After the test power is turned on, the excitation coil generates an electromagnetic effect, the elastic element is compressed, and the metal rod retracts.

[0132] S307, the drop hammer impact assembly is free to fall. After the metal rod is retracted, the drop hammer impact assembly is free to fall along the slide rails on both sides and impact the test piece.

[0133] S308, monitoring the speed / displacement during the test. Specifically, the displacement sensor on the drop weight body can monitor the speed and displacement information during the test in real time.

[0134] S309, determining whether the speed / displacement is reversed. When the drop hammer ball head hits the test piece, the drop hammer ball head will rebound, and at this time the displacement sensor monitors that the speed / displacement direction has changed.

[0135] S310, disconnect the test power supply.

[0136] S311, disconnect the power supply of the drop hammer impact assembly.

[0137] S312, metal rod stretches. After the power supply of the drop hammer impact assembly is disconnected, the electromagnetic induction phenomenon of the excitation coil disappears, and the elastic element rebounds, causing the metal rod to stretch out and get stuck in the toothed grooves of the two columns.

[0138] S313, the test ends.

[0139] In this embodiment, the drop hammer impact assembly is slid to a predetermined height before the test to meet the test requirements. In addition, when the speed / displacement changes during the test are monitored, the test power supply is disconnected and the power supply of the drop hammer impact assembly is further disconnected, so that the metal rod is extended and stuck in the groove of the column, so that the drop hammer ball head will not perform a secondary impact on the test piece, thereby ensuring that the test data is authentic and reliable and improving the test efficiency of the drop hammer impact.

[0140] The present application also provides a control device for a drop hammer impact test device. The drop hammer impact test device can be as follows: Figures 1 to 5 The provided drop weight impact test device 1. The control device can correspond to Figure 5 The control device 50 shown, that is, the control device can be included in the drop weight impact test device. In other embodiments, the control device can be independent of the drop weight impact test device, for example, the control device can be a workstation control device. For another example, the control device can be a host computer.

[0141] Alternatively, if Figure 8 As shown, the control device 4 includes: a control module 401, which is used to control the telescopic assembly to retract horizontally toward the center of the drop hammer body, so that the drop hammer impact assembly slides up and down in the vertical direction; and to control the telescopic assembly to extend horizontally toward the column and engage with the column, so that the drop hammer impact assembly is fixed above the test support pedestal.

[0142] In one embodiment, the control module 401 is specifically used to: when controlling the telescopic assembly to retract horizontally toward the center of the drop hammer body, control the motor to drive the winding machine so that the steel rope pulls the drop hammer impact assembly to slide up and down in the vertical direction.

[0143] In one embodiment, if Fig. 9 As shown, the control device 4 also includes: an input module 402, which is used to obtain the displacement and / or speed of the drop hammer impact assembly measured by the measuring device; the control module 401 is specifically used to: when it is monitored that the direction of the displacement and / or speed of the drop hammer impact assembly received by the input module changes, control the telescopic assembly to extend toward the column in the horizontal direction and engage with the column, so that the drop hammer impact assembly is fixed above the test support pedestal.

[0144] In one embodiment, the control module 401 is specifically used to: control the telescopic assembly to retract toward the center of the drop hammer body in a horizontal direction, so that the drop hammer impact assembly slides downward from a preset height to impact the test piece.

[0145] In one embodiment, the control module 401 is specifically used to: before controlling the telescopic assembly to retract in a horizontal direction toward the center of the drop hammer body so that the drop hammer impact assembly slides downward from a preset height to impact the test piece, control the telescopic assembly to retract in a horizontal direction toward the center of the drop hammer body so that the drop hammer impact assembly rises or falls to a preset height; when the drop hammer impact assembly rises or falls to a preset height, control the telescopic assembly to extend in a horizontal direction toward the column and engage with the column so that the drop hammer impact assembly is fixed at a preset height above the test support pedestal.

[0146] In one embodiment, the input module 402 is further used to obtain a preset height according to the mass of the ball head of the drop hammer.

[0147] In one embodiment, the telescopic assembly includes a metal rod and an elastic element connected in a horizontal direction, and the outer periphery of the metal rod is wrapped with an excitation coil; the control module 401 is specifically used to: control the power supply of the drop hammer impact assembly to enable the excitation coil to generate a magnetic field and put the elastic element into a compressed state, thereby causing the metal rod to retract toward the center of the drop hammer body; control the power supply of the drop hammer impact assembly to be cut off, so that the excitation coil removes the magnetic field and puts the elastic element into a rebound state, thereby causing the metal rod to extend toward the direction of the column.

[0148] In an embodiment of the present application, the sensor is connected to the control device 4. The sensor obtains data related to the force, operating displacement, and operating speed of the drop hammer impact assembly. These data are electrical signals and can be converted into a first digital signal. It should be added here that the voltage or current signal fed back by some sensors is small, and the signal needs to be amplified by an operational amplifier and then connected to the control device 4. In other words, an operational amplifier is connected between the sensor and the control device 4. The control device 4 demodulates the first digital signal to obtain a second digital signal. Transmit it to the host computer or workstation control device. In this case, the control device 4 is integrated in the drop hammer impact test equipment.

[0149] It should be understood that the control device 4 according to the embodiment of the present application may correspond to the execution subject in the embodiments of the control method 2 and the control method 3 of the embodiment of the present application, and the above and other operations and / or functions of each unit in the control device 4 are respectively to realize Figure 6 and Figure 7 For the sake of brevity, the corresponding processes in each method will not be repeated here.

[0150] like Fig.10 As shown, the embodiment of the present application also provides a control device 5 of a drop hammer impact test device, and the drop hammer impact test device can be as follows Figures 1 to 5 The provided drop weight impact test device 1. The control device 5 is capable of executing Figure 6 and Figure 7The control device 5 may be Figure 5 The control device 50 in the embodiment may also be Figure 8 and Fig. 9 The control device 4 in. Fig.10 The control device 5 shown includes a processor 51, which can call and run a computer program from a memory to implement the method in the embodiment of the present application.

[0151] Alternatively, if Fig.10 As shown, the control device 5 may further include a memory 52. ​​The processor 51 may call and run a computer program from the memory 52 to implement the method in the embodiment of the present application.

[0152] The memory 52 may be a separate device independent of the processor 51 , or may be integrated into the processor 51 .

[0153] Alternatively, if Fig.10 As shown, the control device 5 may further include a transceiver 53, and the processor 51 may control the transceiver 53 to communicate with other devices, specifically, to send information or data to other devices, or to receive information or data sent by other devices.

[0154] The transceiver 53 may include a transmitter and a receiver. The transceiver 53 may further include an antenna, and the number of the antennas may be one or more.

[0155] In a specific implementation manner, the control module 401 and the acquisition module 402 in the control device 4 may be composed of Fig.10 The processor 51 in is implemented.

[0156] Optionally, an embodiment of the present application further provides a chip, including a processor, which can call and run a computer program from a memory to implement the printing abnormality detection method in the embodiment of the present application.

[0157] Optionally, the embodiment of the present application further provides a computer-readable storage medium for storing a computer program, wherein the computer program enables a computer to execute the printing anomaly detection method in the embodiment of the present application.

[0158] Optionally, an embodiment of the present application further provides a computer program product, including computer program instructions, which enable a computer to execute the printing anomaly detection method in the embodiment of the present application.

[0159] Optionally, the embodiment of the present application further provides a computer program, which enables a computer to execute the printing anomaly detection method in the embodiment of the present application.

[0160] It should be understood that the processor of the embodiment of the present application may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method embodiment can be completed by the hardware integrated logic circuit or software instructions in the processor. The above processor can be a general processor, a digital signal processor (Digital Signal Processor, DSP), an application-specific integrated circuit (Application Specific Integrated Circuit, ASIC), a field programmable gate array (Field Programmable Gate Array, FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components. The methods, steps and logic block diagrams disclosed in the embodiments of the present application can be implemented or executed. The general processor can be a microprocessor or the processor can also be any conventional processor. The steps of the method disclosed in the embodiment of the present application can be directly embodied as a hardware decoding processor to perform, or the hardware and software modules in the decoding processor are combined and performed. The software module can be located in a random access memory, a flash memory, a read-only memory, a programmable read-only memory or an electrically erasable programmable memory, a register, and other mature storage media in the art. The storage medium is located in the memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware.

[0161] It can be understood that the memory in the embodiments of the present application can be a volatile memory or a non-volatile memory, or can include both volatile and non-volatile memories. Among them, the non-volatile memory can be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory can be a random access memory (RAM), which is used as an external cache. By way of example and not limitation, many forms of RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct RAM bus random access memory (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to include, but is not limited to, these and any other suitable types of memory.

[0162] Although the present application has been described with reference to preferred embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present application. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there are no structural conflicts. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A drop weight impact test device, characterized in that: Includes test platform and drop weight impact assembly; The test platform comprises a base, a top plate and at least one pair of columns arranged between the base and the top plate, the base is provided with a test support seat, the test support seat is used to place the test piece, and each pair of columns in the at least one pair of columns is arranged on both sides of the test support platform along the horizontal direction; The drop hammer impact assembly comprises: A drop hammer body and a drop hammer ball head, wherein the drop hammer body is slidably disposed on the at least one pair of columns, and the drop hammer ball head is disposed on the lower surface of the drop hammer body and is used to impact the test piece; A telescopic assembly is horizontally arranged in the hollow structure of the drop hammer body; The telescopic assembly is configured to be able to retract toward the center of the drop hammer body in a horizontal direction, so that the drop hammer impact assembly slides up and down in a vertical direction; and The telescopic assembly is configured to be able to extend toward the column along the horizontal direction and engage with the column, so that the drop weight impact assembly is fixed above the test support seat.

2. The drop weight impact testing device according to claim 1, characterized in that: The telescopic assembly comprises a metal rod and an elastic element connected along the horizontal direction, and the periphery of the metal rod is wrapped with an excitation coil; The excitation coil is used to generate a magnetic field when the drop hammer impact assembly is powered on, and to remove the magnetic field when the drop hammer impact assembly is powered off; The elastic element is used to be in a compressed state when the excitation coil generates a magnetic field, and to be in a rebound state when the excitation coil removes the magnetic field; The metal rod is used to retract toward the center of the drop hammer body when the elastic element is in a compressed state, and to extend toward the column when the elastic element is in a rebound state.

3. The drop weight impact testing device according to claim 2, characterized in that: The metal rod is sleeved on a metal sleeve, and the excitation coil is wrapped on the metal sleeve.

4. The drop weight impact testing device according to claim 2 or 3, characterized in that: The material of the metal rod is soft iron.

5. The drop weight impact testing device according to any one of claims 2 to 4, characterized in that: The drop hammer ball head is connected to the drop hammer body in a detachable connection manner.

6. The drop weight impact testing device according to any one of claims 1 to 5, characterized in that: A tooth-shaped groove continuous in the vertical direction is provided on the first side surface of the column close to the telescopic assembly, and a limiting protrusion matching the tooth-shaped groove is provided on the end of the telescopic assembly close to the column; The telescopic assembly and the column are engaged with each other by inserting the limiting protrusion into the tooth-shaped groove.

7. The drop weight impact testing device according to claim 6, characterized in that: A slide rail is provided on at least one side surface of the column except the first side surface, the drop hammer body is provided with a through hole penetrating along the vertical direction, the column passes through the through hole, and a steel ball matching the slide rail is provided on a wall of the through hole opposite to the at least one side surface; The falling hammer body is slidably arranged on the column through the cooperation of the steel ball and the slide rail.

8. The drop weight impact testing device according to any one of claims 1 to 7, characterized in that: The drop weight impact testing device also includes a lifting device; The lifting device comprises a motor, a winding machine and a steel rope, wherein the motor and the winding machine are arranged on the top plate, one end of the steel rope is wound on the winding machine, and the other end of the steel rope is connected to the drop hammer impact assembly through a hook arranged on the upper surface of the drop hammer body; The motor is used to drive the wire winder so that the steel rope pulls the drop hammer impact assembly to slide up and down along the vertical direction.

9. The drop weight impact testing device according to any one of claims 1 to 8, characterized in that: The drop weight impact testing device further comprises a measuring device, wherein the measuring device is used to measure the displacement and / or velocity of the drop weight impact assembly; and / or, The measuring device is used to measure the force generated by the drop weight impact assembly and / or the force exerted on the test piece.

10. The drop weight impact testing device according to any one of claims 1 to 9, characterized in that: The test platform further includes a baffle, which is arranged around the base.

11. The drop weight impact testing device according to claim 10, characterized in that: An observation window is provided on the front side of the baffle.

12. The drop weight impact testing device according to any one of claims 1 to 11, characterized in that: The drop hammer impact testing equipment further comprises a control device, wherein the control device is used to control the telescopic assembly to retract along the horizontal direction toward the center of the drop hammer body and / or to extend along the horizontal direction toward the column.

13. A control method for a drop weight impact test device, characterized in that: The drop weight impact test equipment comprises a test platform and a drop weight impact assembly; The test platform comprises a base, a top plate and at least one pair of columns arranged between the base and the top plate, the base is provided with a test support seat, the test support seat is used to place the test piece, and each pair of columns in the at least one pair of columns is arranged on both sides of the test support platform along the horizontal direction; The drop hammer impact assembly comprises: A drop hammer body and a drop hammer ball head, wherein the drop hammer body is slidably disposed on the at least one pair of columns, and the drop hammer ball head is disposed on the lower surface of the drop hammer body and is used to impact the test piece; A telescopic assembly is horizontally arranged in the hollow structure of the drop hammer body; The control method comprises: Controlling the telescopic assembly to retract along the horizontal direction toward the center of the drop hammer body, so that the drop hammer impact assembly slides up and down along the vertical direction; and The telescopic assembly is controlled to extend toward the column along the horizontal direction and engage with the column, so that the drop hammer impact assembly is fixed above the test support seat.

14. The control method according to claim 13, characterized in that: The drop hammer impact test device further includes a lifting device; the lifting device includes a motor, a wire winder and a steel rope, the motor and the wire winder are arranged on the top plate, one end of the steel rope is wound on the wire winder, and the other end of the steel rope is connected to the drop hammer impact assembly through a hook arranged on the upper surface of the drop hammer body, and the control of the telescopic assembly to retract toward the center of the drop hammer body along the horizontal direction so that the drop hammer impact assembly slides up and down along the vertical direction includes: When the telescopic assembly is controlled to retract toward the center of the drop hammer body along the horizontal direction, the motor is controlled to drive the wire winder so that the steel rope pulls the drop hammer impact assembly to slide up and down along the vertical direction.

15. The control method according to claim 13 or 14, characterized in that: The drop weight impact test equipment further includes a measuring device, which is used to measure the displacement and / or speed of the drop weight impact assembly. The control of the telescopic assembly to extend toward the column along the horizontal direction and engage with the column so that the drop weight impact assembly is fixed above the test support seat includes: When the direction of the displacement and / or velocity of the drop weight impact assembly measured by the measuring device changes, the telescopic assembly is controlled to extend toward the column along the horizontal direction and engage with the column, so that the drop weight impact assembly is fixed above the test support pedestal.

16. The control method according to claim 15, characterized in that: The controlling the telescopic assembly to retract along the horizontal direction toward the center of the drop hammer body so that the drop hammer impact assembly slides up and down along the vertical direction comprises: The telescopic assembly is controlled to retract toward the center of the drop hammer body along the horizontal direction, so that the drop hammer impact assembly slides downward from a preset height to impact the test piece.

17. The control method according to claim 16, characterized in that: Before controlling the telescopic assembly to retract along the horizontal direction toward the center of the drop hammer body so that the drop hammer impact assembly slides downward from a preset height to impact the test piece, the control method further includes: Controlling the telescopic assembly to retract along the horizontal direction toward the center of the drop hammer body, so that the drop hammer impact assembly rises or falls to the preset height; When the drop hammer impact assembly rises or falls to the preset height, the telescopic assembly is controlled to extend toward the column along the horizontal direction and engage with the column, so that the drop hammer impact assembly is fixed at the preset height above the test support pedestal.

18. The control method according to claim 16 or 17, characterized in that: The control method further comprises: The preset height is obtained according to the mass of the drop hammer ball head.

19. The control method according to any one of claims 13 to 18, characterized in that: The telescopic assembly comprises a metal rod and an elastic element connected along the horizontal direction, and the periphery of the metal rod is wrapped with an excitation coil; and controlling the telescopic assembly to retract along the horizontal direction toward the center of the drop hammer body comprises: Controlling the drop hammer impact assembly to be energized so that the excitation coil generates a magnetic field and the elastic element is in a compressed state, thereby causing the metal rod to retract toward the center of the drop hammer body; The controlling the telescopic assembly to extend toward the column along the horizontal direction and engage with the column comprises: The drop hammer impact assembly is controlled to be powered off, so that the excitation coil removes the magnetic field and the elastic element is in a rebound state, thereby causing the metal rod to extend toward the column.

20. A control device for a drop weight impact test device, characterized in that: The drop hammer impact test equipment comprises a test platform and a drop hammer impact assembly; the test platform comprises a base, a top plate and at least one pair of columns arranged between the base and the top plate, the base is provided with a test support seat, the test support seat is used to place the test piece, and each pair of columns in the at least one pair of columns is arranged on both sides of the test support platform in a horizontal direction; the drop hammer impact assembly comprises: a drop hammer body and a drop hammer ball head, the drop hammer body is slidably arranged on the at least one pair of columns, the drop hammer ball head is arranged on the lower surface of the drop hammer body, and is used to impact the test piece; a telescopic assembly is horizontally arranged in the hollow structure of the drop hammer body; The control device comprises: The control module is used to control the telescopic assembly to retract along the horizontal direction toward the center of the drop hammer body, so that the drop hammer impact assembly slides up and down along the vertical direction; and to control the telescopic assembly to extend toward the column along the horizontal direction and engage with the column, so that the drop hammer impact assembly is fixed above the test support pedestal.

21. The control device according to claim 20, characterized in that: The drop hammer impact test equipment further includes a lifting device; the lifting device includes a motor, a winding machine and a steel rope, the motor and the winding machine are arranged on the top plate, one end of the steel rope is wound on the winding machine, and the other end of the steel rope is connected to the drop hammer impact assembly through a hook arranged on the upper surface of the drop hammer body, and the control module is specifically used for: When the telescopic assembly is controlled to retract toward the center of the drop hammer body along the horizontal direction, the motor is controlled to drive the wire winder so that the steel rope pulls the drop hammer impact assembly to slide up and down along the vertical direction.

22. The control device according to claim 19 or 20, characterized in that: The drop weight impact test device further comprises a measuring device, wherein the measuring device is used to measure the displacement and / or velocity of the drop weight impact assembly, and the control device further comprises: An input module, used for acquiring the displacement and / or velocity of the drop weight impact assembly measured by the measuring device; The control module is specifically used for: When it is monitored that the direction of the displacement and / or speed of the drop hammer impact assembly received by the input module changes, the telescopic assembly is controlled to extend toward the column along the horizontal direction and engage with the column, so that the drop hammer impact assembly is fixed above the test support pedestal.

23. The control device according to claim 22, characterized in that: The control module is specifically used for: The telescopic assembly is controlled to retract toward the center of the drop hammer body along the horizontal direction, so that the drop hammer impact assembly slides downward from a preset height to impact the test piece.

24. The control device according to claim 23, characterized in that The control module is specifically used for: Before controlling the telescopic assembly to retract along the horizontal direction toward the center of the drop hammer body so that the drop hammer impact assembly slides downward from a preset height to impact the test piece, controlling the telescopic assembly to retract along the horizontal direction toward the center of the drop hammer body so that the drop hammer impact assembly rises or descends to the preset height; When the drop hammer impact assembly rises or falls to the preset height, the telescopic assembly is controlled to extend toward the column along the horizontal direction and engage with the column, so that the drop hammer impact assembly is fixed at the preset height above the test support pedestal.

25. The control device according to claim 23 or 24, characterized in that: The input module is also used for: The preset height is obtained according to the mass of the drop hammer ball head.

26. The control device according to any one of claims 20 to 25, characterized in that: The telescopic assembly includes a metal rod and an elastic element connected along the horizontal direction, and the periphery of the metal rod is wrapped with an excitation coil; the control module is specifically used for: Controlling the drop hammer impact assembly to be energized so that the excitation coil generates a magnetic field and the elastic element is in a compressed state, thereby causing the metal rod to retract toward the center of the drop hammer body; The drop hammer impact assembly is controlled to be powered off, so that the excitation coil removes the magnetic field and the elastic element is in a rebound state, thereby causing the metal rod to extend toward the column.

27. A computer-readable storage medium, characterized in that: Used to store a computer program, wherein the computer program causes a computer to execute the control method according to any one of claims 13 to 19.

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