CN220772505U

CN220772505U - Falling test bed and falling test machine

Info

Publication number: CN220772505U
Application number: CN202322519671.6U
Authority: CN
Inventors: 李雄波; 高明俊; 胡冬莲; 邓常青; 周锴威
Original assignee: Hunan Qibin Electronic Glass Co ltd
Current assignee: Hunan Qibin Electronic Glass Co ltd
Priority date: 2023-09-15
Filing date: 2023-09-15
Publication date: 2024-04-12
Anticipated expiration: 2033-09-15

Abstract

The application provides a fall test bench and fall test machine, wherein, fall test machine including falling the test bench, fall the test bench including first portion of accepting, second portion of accepting and base, first portion of accepting is used for accepting the test work piece that falls from the sky, and the second portion of accepting is used for accepting the test work piece that pops out from first portion of accepting, and second portion of accepting is equipped with the blotter, and the base is equipped with sensor and driver, and the sensor is used for instructing the driver to drive second portion of accepting to remove. Through setting up first supporting part, second supporting part and base three mutually support, can simulate the drop operating mode of test work piece in the practical application to reduce the damage that follow-up falling caused after test work piece pops out from first supporting part, the anti performance test result that falls of test work piece is more accurate.

Description

Falling test bed and falling test machine

Technical Field

The application belongs to the technical field of test equipment, and more specifically relates to a falling test stand and a falling test machine.

Background

The falling test machine can simulate the use scene that the object falls to the ground from the sky, is applied to the drop test of object, and the falling test machine is equipped with the falling test bench, through falling the object to the falling test bench with the different high departments to observe the damage condition of object, the anti falling performance of testable object.

The existing falling test stand is provided with a test platform for supporting the object, the object can bounce to a certain height after falling to the test platform for the first time, the object is caused to fall for multiple times, damage generated by the subsequent falling of the object is superimposed to damage generated by the first falling of the object, and the first falling test result of the object is distorted, so that the problems that the first falling test result of the object is greatly interfered by the subsequent falling and the accuracy of the first falling resistance test result of the object is poor exist.

Disclosure of Invention

An objective of the embodiments of the present application is to provide a drop test stand and a drop test machine, so as to solve the technical problems in the prior art that a first drop test result of an object is greatly interfered by a subsequent drop, and a first drop resistance test result of the object is poor in accuracy.

In order to solve the above technical problems, in a first aspect, an embodiment of the present application provides a falling test stand, where the falling test stand includes a first receiving portion, a second receiving portion, and a base, where the first receiving portion and the second receiving portion are installed at a top of the base at intervals; the first bearing part is used for bearing a test workpiece falling from the air; the second bearing part is used for bearing the test workpiece ejected from the first bearing part, and a buffer cushion is arranged on one side of the second bearing part, which is away from the base; the base is provided with an electrically connected sensor and a driver, the sensor is used for sensing the test workpiece falling to the first bearing part to indicate that the driver is started, and the driver is used for driving the second bearing part to move so that the second bearing part is located right above the first bearing part.

The beneficial effect that falls test bench that this application provided lies in: through setting up first portion of accepting, second portion of accepting and base three mutually support, accept the test work piece that falls for the first time from the sky by first portion of accepting, with the fall operating mode of simulating the test work piece in the practical application, can respond to the test work piece through the sensor and fall to first portion of accepting, with instruct the driver drive second portion of accepting to move towards adjacent first portion of accepting, until the orthographic projection of second portion of accepting covers the orthographic projection of first portion of accepting, thereby can make the test work piece pop out from first portion of accepting the back and drop to second portion of accepting, compare in prior art only set up single portion of accepting, this application is accepted by two portions of accepting in succession of test work piece, second portion of accepting is equipped with the blotter, can reduce the secondary damage that the test work piece caused from the follow-up falling after first portion of accepting pops, make the first drop test result of test work piece receive the interference that follow-up falls less, the first anti-drop performance test result of test work piece is more accurate.

In one possible embodiment, the orthographic projection area of the second receiving portion is not smaller than the orthographic projection area of the first receiving portion.

In an realizable technical scheme, the driver includes transmission shaft, motor and interval install in first connecting piece and the second connecting piece of transmission shaft, the motor is used for the drive first connecting piece is rotatory in order to drive the transmission shaft rotates, the second connecting piece with the second is accepted the portion and is linked to each other and can follow the length direction of transmission shaft removes, first connecting piece with the second connecting piece is hollow structure, the inner peripheral wall of first connecting piece with the outer peripheral wall of transmission shaft links to each other, the inner peripheral wall of second connecting piece is equipped with the internal thread, the outer peripheral wall of transmission shaft be equipped with the external screw thread of internal thread looks adaptation.

In one implementation technical scheme, the base has seted up first mounting groove in top department, the transmission shaft along length direction's both ends rotate respectively connect in the relative both sides lateral wall of first mounting groove, the periphery wall of second connecting piece with second adapting portion fixed connection, in order to drive the second adapting portion is in move on the base.

In one technical scheme, the base is further provided with a limiter at the top, and the limiter is used for limiting movement of the second bearing part.

In one possible technical solution, the sensor is a gravity sensor and is connected to a side of the first receiving portion facing the base.

In one implementation technical scheme, the base is further provided with a second mounting groove at the top, the sensor is mounted on the bottom wall of the second mounting groove, and the first bearing part is arranged at the opening of the second mounting groove.

In one implementation technical scheme, the sensor is a laser sensor and is mounted on the top of the base, and the transmitting end of the sensor faces the first receiving portion.

In a second aspect, an embodiment of the present application further provides a falling test machine, including the falling test stand described above.

In one implementation technical scheme, fall the test machine still includes stand and cantilever, the tip of stand connect in the top of base, the cantilever with the base sets up relatively and install in the stand.

The application provides a fall test machine's beneficial effect lies in: by arranging the falling test bed, the first falling test result of the test workpiece is less interfered by subsequent falling, and the first falling resistance test result of the test workpiece is more accurate.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required for the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a front view of a drop test stand provided in an embodiment of the present application;

FIG. 2 is a top view of a drop test stand in an embodiment of the present application;

FIG. 3 is a front view of a drop test stand according to another embodiment of the present application;

fig. 4 is a front view of the drop test machine according to the embodiment of the present application.

Wherein, each reference sign in the figure:

10. a first receiving portion; 11. testing a flat plate; 12. test paper;

20. a second receiving portion;

30. a base; 31. a sensor; 32. a driver; 321. a transmission shaft; 322. a motor; 323. a first connector; 324. a second connector; 33. a first mounting groove; 34. a second mounting groove;

40. testing a workpiece;

50. a column;

60. and (3) a cantilever.

Detailed Description

In order to make the technical problems, technical schemes and beneficial effects to be solved by the present application more clear, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the present application.

It will be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present application and simplify description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be configured and operated in a particular orientation, and therefore should not be construed as limiting the present application.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

The following detailed description is made with reference to specific drawings and examples:

referring to fig. 1 and 2 together, the embodiment of the application provides a falling test stand, which comprises a first supporting part 10, a second supporting part 20 and a base 30, wherein the first supporting part 10 and the second supporting part 20 are installed at the top of the base 30 at intervals, the first supporting part 10 is used for supporting a test workpiece 40 falling from the air, the second supporting part 20 is used for supporting the test workpiece 40 popped from the first supporting part 10, a buffer pad is arranged on one side of the second supporting part 20 away from the base 30, the base 30 is provided with a sensor 31 and a driver 32 which are electrically connected, the sensor 31 is used for sensing the test workpiece 40 falling to the first supporting part 10 to instruct the driver 32 to start, and the driver 32 is used for driving the second supporting part 20 to move so that the second supporting part 20 is located right above the first supporting part 10.

Through setting up first adapting portion 10, second adapting portion 20 and base 30 three mutually support, accept the test work piece 40 that falls for the first time from the sky by first adapting portion 10, with the fall operating mode of simulation in the test work piece 40 in the practical application, can respond to the test work piece 40 and fall to first adapting portion 10 through sensor 31, with instruct driver 32 drive second adapting portion 20 to be close to first adapting portion 10 and remove, until the orthographic projection of second adapting portion 20 covers the orthographic projection of first adapting portion 10, thereby can make test work piece 40 drop to second adapting portion 20 after popping from first adapting portion 10, second adapting portion 20 is equipped with the blotter, can reduce the secondary damage that the follow-up fall that test work piece 40 popped from first adapting portion 10 caused, make the first time drop test result of test work piece 40 receive the interference of follow-up fall less, the first anti-drop performance test result of test work piece is more accurate.

In use, the top of the base 30 is the portion of the base 30 that faces the test piece 40 that is dropped from the air.

In application, the test piece 40 may be an electronic glass, quartz glass, tempered glass, plastic shell, paper shell, or the like.

In the application, the second receiving portion 20 is further away from the base 30 relative to the first receiving portion 10 in a direction perpendicular to the top surface of the base 30, and the bottom surface of the second receiving portion 20 is higher than the top surface of the first receiving portion 10, so as to ensure that the movement of the second receiving portion 20 does not interfere with the first receiving portion 10.

In application, the test workpiece 40 is mounted on a test die for testing, and the test die is used for simulating a use scene of the test workpiece 40 mounted on an object with the same volume and weight as the test die, so that a simulation working condition of the test workpiece 40 is closer to reality.

In the application, the test die is provided with a sucker for adsorbing the test workpiece 40, and in the application, the test workpiece 40 is electronic glass, and free falling motion or throwing motion is carried out after the test die is moved to a set height in the air according to the test requirement, so that the test workpiece 40 can be subjected to drop-resistant performance test under various height working conditions.

In application, the first receiving portion 10 includes a test plate 11 and a test paper 12, the test paper 12 is attached to one side of the test plate 11 for receiving the test workpiece 40, the test plate 11 is used for simulating a working condition that the test workpiece 40 falls down to objects with different hardness, the test plate 11 can be one of a marble plate, a concrete plate, a wood plate and a plastic plate, the test paper 12 is used for simulating a working condition that the test workpiece falls down to objects with different surface roughness, and the test paper 12 can be one of sand paper, copy paper and photo paper, so that a damage condition that the test workpiece 40 falls down to the plates with different hardness and different surface roughness can be conveniently simulated.

In application, the cushion pad may be made of one or more of rubber, sponge, cotton and hemp, etc., so as to reduce damage to the test piece 40 from falling down to the second receptacle 20.

In application, the driver 32 is provided with an integrated circuit board and a control program, the integrated circuit board is electrically connected with the sensor 31, the sensor 31 sends out an indication signal when sensing that the test workpiece 40 exists on the first receiving portion 10, and the driver 32 is operated by the control program after the indication signal is transmitted to the integrated circuit board, so that the second receiving portion 20 moves to the upper side of the first receiving portion 10.

In one embodiment, referring to fig. 1 and 2, the orthographic projection area of the second receiving portion 20 is not smaller than the orthographic projection area of the first receiving portion 10.

In application, the first supporting part 10 and the second supporting part 20 are opposite to the top surface of the base 30, the top surface of the base 30 is horizontally arranged, and the first supporting part 10 and the second supporting part 20 are parallel to the top surface of the base 30, so that the deflection angle generated when the test workpiece 40 rebounds and falls relative to the plane where the first supporting part 10 is located is smaller, and the test workpiece 40 can fall onto the second supporting part 20 after rebounds.

In an embodiment, referring to fig. 1 and 2 together, the driver 32 includes a transmission shaft 321, a motor 322, and a first connecting member 323 and a second connecting member 324 installed on the transmission shaft 321 at intervals, the motor 322 is used for driving the first connecting member 323 to rotate so as to drive the transmission shaft 321 to rotate, the second connecting member 324 is connected with the second receiving portion 20 and can move along the length direction of the transmission shaft 321, the first connecting member 323 and the second connecting member 324 are hollow structures, the inner peripheral wall of the first connecting member 323 is connected with the outer peripheral wall of the transmission shaft 321, the inner peripheral wall of the second connecting member 324 is provided with internal threads, and the outer peripheral wall of the transmission shaft 321 is provided with external threads matched with the internal threads.

In application, a plurality of second connectors 324 are provided, and a plurality of second connectors 324 are disposed at intervals along the length direction of the transmission shaft 321, so as to improve the stability of the second receiving portion 20 during the moving process.

In application, the first connecting piece 323 and the second connecting piece 324 may be gears, the inner peripheral wall of the first connecting piece 323 is fixedly connected with the transmission shaft 321, the outer peripheral wall of the first connecting piece 323 is meshed with the output end of the motor 322, and the motor 322 can rotate the transmission shaft 321 clockwise or anticlockwise along the central axis of the length direction by driving the first connecting piece 323 to rotate.

In application, the internal thread of the second connecting piece 324 and the external thread of the transmission shaft 321 are both inclined relative to the length direction of the transmission shaft 321, so that the rotation of the transmission shaft 321 drives the second connecting piece 324 to reciprocate.

In an embodiment, referring to fig. 1 and 2 together, a first mounting groove 33 is formed at the top surface of the base 30, two ends of the transmission shaft 321 along the length direction are respectively connected to two opposite side walls of the first mounting groove 33 in a rotating manner, and the outer peripheral wall of the second connecting member 324 is fixedly connected to the second receiving portion 20 so as to drive the second receiving portion 20 to move on the base 30.

In application, the two opposite side walls of the first mounting groove 33 are respectively provided with bearings for rotatably connecting two ends of the transmission shaft 321, the second receiving portion 20 is abutted against the top surface of the base 30, the motor 322 rotates the transmission shaft 321 in one direction to drive the second connecting piece 324 to move in a direction close to the first receiving portion 10 until the orthographic projection of the second receiving portion 20 covers the orthographic projection of the first receiving portion 10, and the motor 322 rotates the transmission shaft 321 in the other direction to drive the second connecting piece 324 to move in a direction far away from the first receiving portion 10 until the orthographic projection of the second receiving portion 20 is separated from the orthographic projection of the first receiving portion 10.

In one embodiment, referring to fig. 1 and 2 together, the base 30 is further provided with a limiter at the top surface, and the limiter is used to limit the movement of the second receiving portion 20.

In application, the limiter may be an electric slider, and the limiter abuts against a side edge of the second receiving portion 20 to limit the second receiving portion 20 from shifting during the moving process.

In application, the limiter may be a limit switch, and the limit switch is electrically connected to the driver 32, and when the second receiving portion moves to the sensing position of the limit switch, the limit switch sends a signal to the driver 32, so that the driver 32 stops after receiving the signal.

In one embodiment, referring to fig. 1 and 2, the sensor 31 is a gravity sensor and is connected to the side of the first receiving portion 10 facing the base 30.

In application, the gravity sensor comprises a cantilever type shifter and an energy storage spring which are all made of elastic sensitive elements, and the cantilever type shifter is matched with the energy storage spring to drive the electric contact so as to realize the conversion from gravity change to electric signal when the test workpiece 40 falls to the first receiving part 10.

In one embodiment, referring to fig. 1 and 2 together, the base 30 further has a second mounting groove 34 formed at the top surface, the sensor 31 is mounted on the bottom wall of the second mounting groove 34, and the first receiving portion 10 is disposed at the opening of the second mounting groove 34.

In one embodiment, referring to fig. 1 and 3 together, the sensor 31 is a laser sensor and is mounted on top of the base 30, and the emitting end of the sensor 31 faces the first receiving portion 10.

In use, the laser sensor includes a laser transmitter for transmitting laser light and a laser receiver for receiving the laser light transmitted by the laser transmitter to effect conversion of a laser length change to an electrical signal when the test piece 40 is dropped onto the first socket 10.

Referring to fig. 1 and fig. 4, the present application further provides a drop test machine, including the drop test stand.

In application, by arranging the falling test stand, the first falling test result of the test workpiece 40 is less interfered by subsequent falling, and the first falling resistance test result of the test workpiece 40 is more accurate.

In one embodiment, referring to fig. 4, the drop test machine further includes a column 50 and a cantilever 60, wherein an end of the column 50 is connected to the top of the base 30, and the cantilever 60 is disposed opposite to the base 30 and is mounted to the column 50.

In application, the cantilever 60 is provided with an electric gripper for placing the test workpiece 40, and one end of the cantilever 60 is slidably connected with the peripheral wall of the upright 50, so as to conveniently adjust the height of the cantilever 60, thereby meeting the drop test conditions of the test workpiece 40 at different heights.

The foregoing description of the preferred embodiments of the present application is not intended to be limiting, but is intended to cover any and all modifications, equivalents, and alternatives falling within the spirit and principles of the present application.

Claims

1. The falling test stand is characterized by comprising a first bearing part (10), a second bearing part (20) and a base (30), wherein the first bearing part (10) and the second bearing part (20) are arranged at the top of the base (30) at intervals;

the first receiving part (10) is used for receiving a test workpiece (40) falling from the air;

the second bearing part (20) is used for bearing the test workpiece (40) ejected from the first bearing part (10), and a buffer cushion is arranged on one side of the second bearing part (20) away from the base (30);

the base (30) is provided with a sensor (31) and a driver (32) which are electrically connected, the sensor (31) is used for sensing the test workpiece (40) falling to the first bearing part (10) to indicate that the driver (32) is started, and the driver (32) is used for driving the second bearing part (20) to move so that the second bearing part (20) is located right above the first bearing part (10).

2. The drop test stand according to claim 1, characterized in that the orthographic projection area of the second receiving portion (20) is not smaller than the orthographic projection area of the first receiving portion (10).

3. The drop test stand according to claim 1, wherein the driver (32) comprises a transmission shaft (321), a motor (322) and a first connecting piece (323) and a second connecting piece (324) which are installed on the transmission shaft (321) at intervals, the motor (322) is used for driving the first connecting piece (323) to rotate so as to drive the transmission shaft (321) to rotate, the second connecting piece (324) is connected with the second bearing part (20) and can move along the length direction of the transmission shaft (321), the first connecting piece (323) and the second connecting piece (324) are of hollow structures, the inner peripheral wall of the first connecting piece (323) is connected with the outer peripheral wall of the transmission shaft (321), the inner peripheral wall of the second connecting piece (324) is provided with internal threads, and the outer peripheral wall of the transmission shaft (321) is provided with external threads matched with the internal threads.

4. A drop test stand according to claim 3, wherein the base (30) is provided with a first mounting groove (33) at the top, two ends of the transmission shaft (321) along the length direction are respectively connected to two opposite side walls of the first mounting groove (33) in a rotating manner, and the peripheral wall of the second connecting piece (324) is fixedly connected with the second receiving portion (20) so as to drive the second receiving portion (20) to move on the base (30).

5. The drop test stand according to claim 1, characterized in that the base (30) is further provided with a stop at the top for limiting the movement of the second receiving portion (20).

6. A drop test bench according to any of claims 1-5, characterized in that the sensor (31) is a gravity sensor and is connected to the side of the first receptacle (10) facing the base (30).

7. The drop test stand according to claim 6, wherein the base (30) is further provided with a second mounting groove (34) at the top, the sensor (31) is mounted on the bottom wall of the second mounting groove (34), and the first receiving portion (10) is disposed at the opening of the second mounting groove (34).

8. A drop test bench according to any of claims 1-5, characterized in that said sensor (31) is a laser sensor and is mounted on top of said base (30), the emitting end of said sensor (31) being directed towards said first receptacle (10).

9. A drop tester comprising a drop test stand as claimed in any one of claims 1 to 8.

10. The drop tester of claim 9, further comprising a post (50) and a cantilever (60), wherein an end of the post (50) is connected to a top of the base (30), and wherein the cantilever (60) is disposed opposite the base (30) and mounted to the post (50).