Multi-elastic-plastic impact experiment platform

Abstract

The utility model discloses a multi-time elastic-plastic impact experiment platform, which comprises a flat plate horizontally arranged and provided with a guide sleeve vertically in a penetrating manner; the guide rod is L-shaped, and the tail end of a vertical part of the guide rod is fixedly connected with the bottom of the flat plate; the screw rod is vertically arranged, the top of the screw rod is rotationally connected with the bottom of the flat plate, and the bottom of the screw rod penetrates through the horizontal part of the guide rod and is rotationally connected with the horizontal part of the guide rod; the nut seat is arranged on the screw rod and fixed on the part, below the flat plate, of the guide sleeve, the vertical part of the guide rod penetrates through the nut seat, and when the screw rod is driven by power to rotate, the nut seat moves up and down and drives the guide sleeve to move up and down at the same time. According to the utility model, the guide sleeve can be driven to move up and down by rotating the screw rod, and then the vertical height of the guide sleeve is adjusted, so that the diversity of data can be ensured when the data is tested, and the stability of the guide sleeve in use can also be ensured.

Description

Technical Field

[0001] The utility model relates to the field of collision dynamics, and more specifically, to a multiple elastic-plastic impact test platform. Background Art

[0002] The collision problem is both a classic physical problem and a common mechanical problem in the operation of modern engineering structures. Exploring the mechanism of collision and calculating the dynamic response caused by collision between flexible bodies are becoming increasingly important for improving the stability and controllability of the long-term operation of the structural system and effectively reducing the harm caused by collision.

[0003] Existing experimental platforms, such as the flexible structure elastoplastic secondary collision experimental platform with application number 201711425766.4, fix the bottom of four brackets on a horizontal bottom plate, and the top supports clamp the four corners of the flat plate to place the flat plate horizontally. The lower part of the guide sleeve is inserted into the through hole of the flat plate to form the first experimental platform; horizontal protrusions are set on the edge of the end of the four brackets to clamp the four corners of the flat plate so that the flat plate can be fine-tuned in the horizontal direction. It can be seen that the guide sleeve cannot adjust the vertical height as needed, and the guide sleeve is directly inserted into the through hole, which cannot guarantee the stability of the guide sleeve when in use. Utility Model Content

[0004] The utility model aims to provide a multiple elastic-plastic impact test platform, which can drive the guide sleeve to move up and down by rotating the screw rod, and then adjust the vertical height of the guide sleeve, so as to ensure the diversity of data when testing data, and also ensure the stability of the guide sleeve when in use.

[0005] In order to achieve these purposes and other advantages of the utility model, a multiple elastic-plastic impact test platform is provided, comprising:

[0006] A flat plate is arranged horizontally, and a guide sleeve is vertically passed through the flat plate;

[0007] A guide rod is L-shaped, and the end of the vertical portion of the guide rod is fixedly connected to the bottom of the plate;

[0008] A screw rod is vertically arranged, the top of the screw rod is rotatably connected to the bottom of the plate, and the bottom of the screw rod passes through the horizontal portion of the guide rod and is rotatably connected to the horizontal portion of the guide rod;

[0009] The nut seat is arranged on the screw rod and fixed on the part of the guide sleeve located below the flat plate. The vertical part of the guide rod passes through the nut seat. When the screw rod rotates under the driving force, the nut seat moves up and down, and drives the guide sleeve to move up and down at the same time.

[0010] Preferably, the multiple elastic-plastic impact test platform further comprises:

[0011] A slide plate is arranged below the flat plate and opposite to the guide sleeve;

[0012] A bottom plate is arranged below the slide plate,

[0013] A bracket is arranged on the bottom plate, and the flat plate is arranged on the bracket, and the flat plate is supported by the bracket;

[0014] The laser displacement sensor is fixed on the base plate through a support.

[0015] Preferably, in the multiple elastic-plastic impact test platform, the guide rod, the screw rod and the nut seat are all located on one side of the guide sleeve.

[0016] Preferably, in the multiple elastic-plastic impact test platform, the bottom of the screw rod passes through the horizontal portion of the guide rod and extends to below the horizontal portion of the guide rod, and a handle is provided at the bottom of the screw rod, and the handle is located on one side of the guide sleeve and is not opposite to the guide sleeve.

[0017] Preferably, in the multiple elastic-plastic impact test platform, the guide sleeve is cylindrical, a pair of through holes is arranged on the side wall of the guide sleeve, the pair of through holes are symmetrically arranged equivalent to the axis of the guide sleeve, each through hole is composed of a through hole one and a through hole two located outside the through hole one, each through hole one and through hole two are arc-shaped, and the center of the circle is located on the axis of the guide sleeve, the arc length of each through hole two is smaller than the arc length of the corresponding through hole one, and the middle of each through hole one is opposite to the corresponding through hole two;

[0018] The multiple elastic-plastic impact test platform also includes:

[0019] A pair of baffles, which correspond to a pair of through holes one by one, each baffle is horizontally arranged, one end of each baffle is inserted into the corresponding through hole and has the same size as the corresponding through hole, and the other end is located outside the guide sleeve; when the pair of baffles move toward each other in the horizontal direction, the other end of each baffle can pass through the corresponding through hole, when the pair of baffles are in contact, the two baffles are symmetrically arranged relative to the axis of the guide sleeve, and the experimental ball can be placed in the guide sleeve and rest on the pair of baffles, and the tips of the other ends of the pair of baffles are located outside the guide sleeve.

[0020] Preferably, in the multiple elastic-plastic impact test platform, a pair of limit blocks are provided at the other end of each baffle plate, and each pair of limit blocks are respectively located on both sides of the corresponding baffle plate; when a pair of baffle plates are in contact, the two pairs of limit blocks are respectively fitted with the outer side walls of the guide sleeve.

[0021] Preferably, the multiple elastic-plastic impact test platform further comprises:

[0022] Two fixing plates, one fixing plate is provided below the other end of each baffle;

[0023] Two springs are symmetrically arranged relative to the guide sleeve. One end of the two springs is fixedly connected to the outer wall of the guide sleeve, and the other end is respectively connected to the two fixed plates. When one end of each baffle is inserted into the corresponding through hole, the spring is in a natural state or a compressed state.

[0024] The utility model at least has the following beneficial effects:

[0025] The utility model can drive the guide sleeve to move up and down by rotating the screw rod, thereby adjusting the vertical height of the guide sleeve, so as to ensure the diversity of data when testing data, and also ensure the stability of the guide sleeve when in use, and has a simple structure and is easy to operate.

[0026] The utility model can place the experimental ball on the pair of baffles by arranging a pair of baffles, and can make the experimental ball fall vertically by pulling the pair of baffles outwards, so as to prevent the experimental personnel from dropping the experimental ball from an uncertain height when dropping the experimental ball.

[0027] Other advantages, objectives and features of the present invention will be embodied in part through the following description, and in part will be understood by those skilled in the art through research and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a structural schematic diagram of a multiple elastic-plastic impact test platform according to one embodiment of the utility model;

[0029] Figure 2 It is a schematic structural diagram of a pair of baffles according to an embodiment of the utility model. DETAILED DESCRIPTION

[0030] The present invention will be further described in detail below in conjunction with the accompanying drawings so that those skilled in the art can implement the invention with reference to the description.

[0031] It should be noted that, in the description of the present invention, the terms "lateral", "longitudinal", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0032] like Figure 1 As shown, the utility model provides a multiple elastic-plastic impact test platform, including:

[0033] A flat plate 1 is arranged horizontally, and a guide sleeve 2 is vertically passed through the flat plate 1;

[0034] The guide rod 3 is L-shaped, and the end (top) of the vertical portion of the guide rod 3 is fixedly connected to the bottom of the plate 1;

[0035] The screw rod 4 is vertically arranged, the top of the screw rod 4 is rotatably connected to the bottom of the plate 1, and the bottom of the screw rod 4 passes through the horizontal portion of the guide rod 3 and is rotatably connected to the horizontal portion of the guide rod 3;

[0036] The nut seat 5 is arranged on the screw rod 4 and fixed on the part of the guide sleeve 2 located below the flat plate 1. The screw rod 4 and the nut seat 5 form a ball screw pair. The vertical part of the guide rod 3 passes through the nut seat and plays a guiding role when the nut seat moves up and down. When the screw rod 4 rotates under the drive of power, the nut seat 5 moves up and down, and at the same time drives the guide sleeve 2 to move up and down.

[0037] The multiple elastic-plastic impact test platform provided by the present invention can drive the guide sleeve 2 to move up and down by rotating the screw 4 when in use, thereby adjusting the vertical height of the guide sleeve 2, thereby ensuring the diversity of data when testing data, and also ensuring the stability of the guide sleeve 2 when in use.

[0038] The present application mainly changes the connection mode of the guide sleeve 2 on the flat plate 1, and the other structures of the experimental platform are the existing structures.

[0039] In another embodiment, the multiple elastic-plastic impact test platform further includes:

[0040] A slide plate 6 is disposed below the flat plate 1 and opposite to the guide sleeve 2;

[0041] The bottom plate 7 is arranged below the slide plate 6.

[0042] A bracket 8 is arranged on the bottom plate 7, and the flat plate 1 is arranged on the bracket 8, and the flat plate 1 is supported by the bracket 8;

[0043] The laser displacement sensor 9 is fixed on the bottom plate 7 via a laser support so that its measuring range covers the entire collision area.

[0044] During the experiment, an experimental ball is dropped from above the flat plate 1. The experimental ball passes through the guide sleeve 2, falls vertically in a free fall state, and collides with the slide plate 6. The laser displacement sensor 9 amplifies the obtained collision signal through a programmable strain amplifier, and then the data acquisition recorder collects the signal data to measure the dynamic strain response signal during the collision process.

[0045] In another embodiment, in the multiple elastic-plastic impact test platform, the guide rod 3, the screw rod 4 and the nut seat 5 are all located on one side of the guide sleeve 2, and the horizontal portion of the guide rod 3 is not opposite to the guide sleeve 2, so as not to affect the downward movement of the guide sleeve 2.

[0046] In another embodiment, in the multiple elastic-plastic impact test platform, the bottom of the screw rod 4 passes through the horizontal portion of the guide rod 3 and extends to below the horizontal portion of the guide rod 3. A handle is provided at the bottom of the screw rod 4. The handle is located at one side of the guide sleeve 2 and is not opposite to the guide sleeve 2, so as not to affect the downward movement of the guide sleeve 2. The screw rod 4 can be rotated by turning the handle.

[0047] In another embodiment, in the multiple elastic-plastic impact test platform, the guide sleeve 2 is cylindrical, and a pair of through holes are arranged on the side wall of the guide sleeve 2, and the pair of through holes are symmetrically arranged with respect to the axis of the guide sleeve 2, and each through hole is composed of a through hole 1 and a through hole 2 located outside the through hole 1, and each through hole 1 and through hole 2 are arc-shaped, and the centers of the circles are located on the axis of the guide sleeve 2, and the arc length of each through hole 2 is smaller than the arc length of the corresponding through hole 1, and the middle part of each through hole 1 is opposite to the entire through hole 2 corresponding to it, and both ends extend out of the corresponding through hole 2, such as Figure 2 As shown, when one end of the baffle is located in the through hole, the baffle cannot move out of the guide sleeve, and each through hole 1 and the corresponding through hole 2 are symmetrically arranged relative to the same radius of the guide sleeve 2;

[0048] like Figure 2 As shown, the multiple elastic-plastic impact test platform also includes:

[0049] A pair of baffles 10, which correspond to a pair of through holes one by one, each baffle 10 is horizontally arranged, one end of each baffle 10 is inserted into the corresponding through hole, and has the same size as the corresponding through hole, and the other end is located outside the guide sleeve 2; when the pair of baffles 10 move toward each other in the horizontal direction, the other end of each baffle 10 can pass through the corresponding through hole, when the pair of baffles 10 are in contact, the two baffles 10 are symmetrically arranged relative to the axis of the guide sleeve 2, and the experimental ball can be placed in the guide sleeve 2 and rest on the pair of baffles 10, and the other end of the pair of baffles 10 is located outside the guide sleeve 2. When the pair of baffles 10 are in contact, the height of the pair of baffles 10 is determined.

[0050] First, push a pair of baffles 10 toward the inside of the guide sleeve 2 to make the pair of baffles 10 contact, and then place the experimental ball on the pair of baffles 10. By pulling the pair of baffles 10 outward, the experimental ball can fall vertically, which can prevent the experimental personnel from dropping the experimental ball from an uncertain height when dropping the experimental ball.

[0051] In another embodiment, in the multiple elastic-plastic impact test platform, a pair of limit blocks 11 are provided at the other end of each baffle, and each pair of limit blocks 11 is respectively located on both sides of the corresponding baffle 10; when a pair of baffles 10 are in contact, the two pairs of limit blocks 11 are respectively fitted with the outer side walls of the guide sleeve 2. The limit blocks 11 limit the baffle 10 from moving too much into the guide sleeve 2.

[0052] In another embodiment, the multiple elastic-plastic impact test platform further includes:

[0053] Two fixing plates 12, a fixing plate 12 is disposed below the other end of each baffle 10;

[0054] Two springs are symmetrically arranged relative to the guide sleeve 2. One end of the two springs is fixedly connected to the outer wall of the guide sleeve 2, and the other end is connected to the two fixing plates 12. When one end of each baffle 10 is inserted into the corresponding through hole, the spring is in a natural state or a compressed state. When there is no external force pushing the baffle 10 toward the inside of the guide sleeve 2, the baffle 10 is in a state as shown in FIG. Figure 2 In the state shown, the spring can limit the movement of the baffle 10 toward the inside of the guide sleeve 2. When an external force pushes the baffle 10 toward the inside of the guide sleeve 2, the spring is compressed. After the external force disappears, the baffle 10 can automatically return to its original position.

[0055] Although the implementation scheme of the utility model has been disclosed as above, it is not limited to the applications listed in the specification and implementation modes. It can be fully applied to various fields suitable for the utility model. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the utility model is not limited to the specific details and the illustrations shown and described herein.

Claims

1. Multiple elastic-plastic impact test platform, It is characterized in that include: A flat plate is arranged horizontally, and a guide sleeve is vertically passed through the flat plate; A guide rod is L-shaped, and the end of the vertical portion of the guide rod is fixedly connected to the bottom of the plate; A screw rod is vertically arranged, the top of the screw rod is rotatably connected to the bottom of the plate, and the bottom of the screw rod passes through the horizontal portion of the guide rod and is rotatably connected to the horizontal portion of the guide rod; The nut seat is arranged on the screw rod and fixed on the part of the guide sleeve located below the flat plate. The vertical part of the guide rod passes through the nut seat. When the screw rod rotates under the driving force, the nut seat moves up and down, and drives the guide sleeve to move up and down at the same time.

2. The multiple elastic-plastic impact test platform as claimed in claim 1, It is characterized in that Also includes: A slide plate is arranged below the flat plate and opposite to the guide sleeve; A bottom plate is arranged below the slide plate, A bracket is arranged on the bottom plate, and the flat plate is arranged on the bracket, and the flat plate is supported by the bracket; The laser displacement sensor is fixed on the base plate through a support.

3. The multiple elastic-plastic impact test platform as claimed in claim 1, It is characterized in that The guide rod, the screw rod and the nut seat are all located on one side of the guide sleeve.

4. The multiple elastic-plastic impact test platform as claimed in claim 3, It is characterized in that The bottom of the screw rod passes through the horizontal part of the guide rod and extends to below the horizontal part of the guide rod. A handle is arranged at the bottom of the screw rod. The handle is located at one side of the guide sleeve and is not opposite to the guide sleeve.

5. The multiple elastic-plastic impact test platform as claimed in claim 1, It is characterized in that The guide sleeve is cylindrical, and a pair of through holes are arranged on the side wall of the guide sleeve, and the pair of through holes are symmetrically arranged with respect to the axis of the guide sleeve, and each through hole is composed of a through hole 1 and a through hole 2 located outside the through hole 1, and each through hole 1 and through hole 2 are arc-shaped, and the centers of the circles are located on the axis of the guide sleeve, and the arc length of each through hole 2 is smaller than the arc length of the corresponding through hole 1, and the middle of each through hole 1 is opposite to the corresponding through hole 2; The multiple elastic-plastic impact test platform also includes: A pair of baffles, which correspond to a pair of through holes one by one, each baffle is horizontally arranged, one end of each baffle is inserted into the corresponding through hole and has the same size as the corresponding through hole, and the other end is located outside the guide sleeve; when the pair of baffles move toward each other in the horizontal direction, the other end of each baffle can pass through the corresponding through hole, when the pair of baffles are in contact, the two baffles are symmetrically arranged relative to the axis of the guide sleeve, and the experimental ball can be placed in the guide sleeve and rest on the pair of baffles, and the tips of the other ends of the pair of baffles are located outside the guide sleeve.

6. The multiple elastic-plastic impact test platform as claimed in claim 5, It is characterized in that A pair of limit blocks are arranged at the other end of each baffle plate, and each pair of limit blocks is respectively located on both sides of the corresponding baffle plate; when a pair of baffle plates are in contact, the two pairs of limit blocks are respectively fitted with the outer side walls of the guide sleeve.

7. The multiple elastic-plastic impact test platform as claimed in claim 6, It is characterized in that Also includes: Two fixing plates, one fixing plate is provided below the other end of each baffle; Two springs are symmetrically arranged relative to the guide sleeve. One end of the two springs is fixedly connected to the outer wall of the guide sleeve, and the other end is respectively connected to the two fixed plates. When one end of each baffle is inserted into the corresponding through hole, the spring is in a natural state or a compressed state.

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