CN212844776U - Pendulum impact testing machine - Google Patents

Abstract

The utility model discloses a pendulum impact tester, including altitude mixture control support, crossbeam, level (l) ing device, pendulum rod and pendulum, the crossbeam both ends respectively with the upper end of altitude mixture control support connect, level (l) ing device install in the crossbeam, level (l) ing device with the upper end of pendulum rod articulated, the pendulum install in the lower extreme of pendulum rod. The utility model discloses according to the experiment needs, adjust the position of pendulum through altitude mixture control support, crossbeam horizontal adjusting device to the realization is to the test piece of more different positions or the different positions of same test piece carry out impact test.

Description

Pendulum impact testing machine

Technical Field

The utility model relates to an impact experiment technical field, in particular to pendulum impact tester.

Background

Impact testing is generally a test method for determining the safety, reliability and effectiveness of military and civil equipment when subjected to external impacts or forces, and pendulum impact testing is one of the important test devices. The pendulum impact tester is used for detecting the performance of a metal material and a non-metal material for resisting impact under dynamic load so as to judge the property of the material under the dynamic load.

The prior pendulum impact tester generally has the following problems: after the test piece is installed, the position of the pendulum bob and the test piece is relatively fixed, that is, the position of the test piece impacted can only be a certain fixed position. Moreover, if the weight of the pendulum is to be changed, the entire pendulum needs to be replaced, which is relatively troublesome. In addition, for some tests, it is necessary to determine the instantaneous force applied to the test piece when it is impacted. These are problems that need to be solved.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a pendulum impact tester in order to overcome the position of the pendulum that above prior art exists and can not adjust the problem.

The purpose of the utility model is realized through the following technical scheme: the utility model provides a pendulum bob impact testing machine, includes altitude mixture control support, crossbeam, level (l) ing device, pendulum rod and pendulum bob, the crossbeam both ends respectively with the upper end of altitude mixture control support be connected, level (l) ing device install in the crossbeam, level (l) ing device with the upper end of pendulum rod articulated, the pendulum install in the lower extreme of pendulum rod.

More preferably, the height adjusting support comprises a base and channel steel, the channel steel is provided with a plurality of mounting holes distributed along the axial direction of the channel steel, the end part of the crossbeam is connected with the mounting holes through bolts, and the lower end of the channel steel is connected with the base.

Preferably, the horizontal adjusting device comprises a first steel sheet and a second steel sheet, the first steel sheet is connected with the second steel sheet through a bolt, the first steel sheet and the second steel sheet clamp the cross beam tightly, and the second steel sheet is hinged to the swing rod.

Preferably, both sides of the first steel sheet are connected with stabilizing mechanisms, each stabilizing mechanism comprises a third steel sheet and a fourth steel sheet, the third steel sheets are connected with the fourth steel sheets through bolts, the third steel sheets and the fourth steel sheets clamp the cross beam tightly, and the side edges of the third steel sheets are connected with the side edges of the first steel sheets.

Preferably, the electric vehicle further comprises a relay device, wherein the relay device comprises a swing arm, a fixed beam, a magnetic force generator and a magnetic sheet, one end of the swing arm is hinged with the fixed beam, the magnetic force generator is installed at the other end of the swing arm, the fixed beam is connected with the horizontal adjusting device, and the magnetic sheet is installed on the swing rod; when the magnetic force generator is electrified, the magnetic force generator is connected with the magnetic sheet.

Preferably, the pendulum bob comprises a hammer frame and an impact head, the hammer frame is mounted at the lower end of the swing rod, the impact head is mounted on an impact surface of the hammer frame through a bolt, and the two sides of the hammer frame are provided with counterweight plates.

Preferably, the pendulum further comprises a pressure sensor, the pressure sensor is located between the hammer frame and the impact head, and the pressure sensor is connected with the impact head.

Preferably, the hammer frame comprises a first mounting plate, a second mounting plate and two counterweight plates, the two counterweight plates are fixed at two ends of the first mounting plate, the two counterweight plates are also fixed at two ends of the second mounting plate, and the first mounting plate and the second mounting plate are both connected with the lower end of the swing rod; the counterweight plate is provided with a counterweight plate through a bolt.

Preferably, two supporting plates are arranged between the first mounting plate and the second mounting plate, the first mounting plate, the second mounting plate and the two supporting plates form a second mounting hole, and the second mounting hole is connected with the swing rod.

Preferably, the impact head comprises a semi-cylindrical steel body and a bottom plate, the semi-cylindrical steel body is connected with the side face of the bottom plate, and the bottom plate is mounted on the hammer frame through a bolt.

The utility model discloses relative prior art has following advantage and beneficial effect:

1. the utility model discloses a altitude mixture control support, horizontal adjusting device and crossbeam realize can reciprocating the position of crossbeam according to experimental needs and adjust the height of pendulum, can control the position that moves the pendulum along the crossbeam direction simultaneously to carry out impact test to the different positions of more not test pieces of co-altitude or same test piece.

2. The utility model discloses a height control support is constituteed to base and channel-section steel, simple structure, and convenient the height of dismantling or adjusting the crossbeam, easy operation.

3. The utility model discloses a first steel sheet and second steel sheet constitute horizontal adjusting device, simple structure adjusts pendulum horizontal position convenient and fast.

4. The utility model discloses a relay device replaces manual operation, has guaranteed operating personnel's personal safety, reduces human intervention's factor, improves the accuracy and the stability of the test data that the test piece assaulted.

5. The utility model adjusts the weight of the pendulum bob by increasing or reducing the number of the counterweight pieces on the two sides of the hammer frame according to the test requirement through the matching of the hammer frame and the counterweight pieces, and the whole pendulum bob does not need to be replaced to obtain impact forces of different grades; the counterweight plates are added on two sides of the hammer frame of the pendulum hammer instead of in front of and behind the hammer frame, so that the symmetrical balance of the hammer head is kept, the serious gravity center deviation of the hammer head under the condition of large counterweight is avoided, and the impact dynamic load of the test piece which is subjected to impact in the moment is guaranteed to be horizontal as much as possible.

6. The utility model discloses a force sensor measures the impact force in the twinkling of an eye to can acquire more accurate experimental data, so that carry out the analysis better.

Drawings

Fig. 1 is a schematic structural view of a pendulum impact tester of the present invention;

FIG. 2 is a schematic structural view of the height adjustment bracket and cross member of the present invention;

FIG. 3 is a schematic view of a horizontal adjustment device of the pendulum impact tester of the present invention;

FIG. 4 is a schematic diagram of a relay device of the pendulum impact tester of the present invention;

FIG. 5 is a schematic diagram of the magnetic force generator and magnetic sheet of the pendulum impact tester of the present invention;

FIG. 6 is a schematic view of a hammer frame structure of the pendulum impact tester of the present invention;

FIG. 7 is a schematic view of the pendulum rod structure of the pendulum impact tester of the present invention;

FIG. 8 is a schematic view of the installation of the hammer frame and the swing rod of the pendulum impact tester of the present invention;

fig. 9 is a schematic view of a pressure sensor and an impact head of the pendulum impact tester of the present invention;

FIG. 10 is a schematic view of a pendulum with a pressure sensor mounted thereon of the pendulum impact tester of the present invention;

FIG. 11 is a schematic view of a pendulum with weight plates mounted thereon of the pendulum impact tester of the present invention;

reference numbers for parts in the drawings: 1. a height adjustment bracket; 11. a base; 12. channel steel; 2. a cross beam; 3. A leveling device; 31. a first steel sheet; 32. a second steel sheet; 4. a relay device; 41. a fixed beam; 42. swinging arms; 43. a magnetic force generator; 44. a magnetic sheet; 5. a swing rod; 51. a first limit plate; 52. a second limiting plate; 53. a first screw; 54. a second screw; 55. a steel rod; 6. a pendulum bob; 61. a hammer frame; 611. A weight plate; 612. a first mounting plate; 613. a second mounting plate; 614. a support plate; 615. a first mounting hole; 616. a second mounting hole; 617. a third mounting hole; 62. an impact head; 621. a base plate; 622. a semi-cylindrical steel body; 63. a weight plate; 64. a pressure sensor; 7. a stabilizing mechanism; 71. a third steel sheet; 72. and a fourth steel sheet.

Detailed Description

The purpose of the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments, which are not repeated herein, but the embodiments of the present invention are not limited to the following embodiments.

As shown in fig. 1, a pendulum impact tester comprises two height adjusting brackets 1, a cross beam 2, a horizontal adjusting device 3, a relay device 4, a pendulum rod 5 and a pendulum 6, wherein two ends of the cross beam 2 are respectively provided with one height adjusting bracket 1, the horizontal adjusting device 3 is arranged on the cross beam 2, a first steel sheet 31 and a third steel sheet 71 of the horizontal adjusting device 3 are both welded with a fixed beam 41 of the relay device 4, a second steel sheet 32 of the horizontal adjusting device 3 is hinged with the upper end of the pendulum rod 5, the lower end of the pendulum rod 5 is provided with the pendulum rod 6, the pendulum rod 5 is provided with a magnetic sheet 44 through a bolt, and the tail end of the relay device 4 is provided with a magnetic force generator 43; in the energized state of the relay device 4, the magnetic force generator 43 of the relay device 4 is connected to the magnetic piece 44 of the rocker lever 5, and in the de-energized state of the relay device 4, the magnetic force generator 43 of the relay device 4 is separated from the magnetic piece 44 of the rocker lever 5.

As shown in fig. 2, the height adjusting bracket 1 includes two bases 11 and four channel steels 12, and the channel steels 12 are provided with a plurality of mounting holes distributed along the axial direction of the channel steels 12, and the mounting holes are used for adjusting the height position of the cross beam 2. Every base 11 installs two channel-section steels 12 that are parallel to each other perpendicularly, and the both ends of crossbeam 2 are all installed perpendicularly between two channel-section steels 12, and the mounted position is located the upper end of channel-section steel 12, and channel-section steel 12 passes through bolted connection with crossbeam 2.

As shown in fig. 3, the horizontal adjustment device 3 includes a first steel sheet 31 and a second steel sheet 32, the stabilizing mechanism 7 includes a third steel sheet 71 and a fourth steel sheet 72, the first steel sheet 31 and the second steel sheet 32 are connected through eight bolts, the third steel sheet 71 and the fourth steel sheet 72 are connected through eight bolts, the cross beam 2 clamps between the first steel sheet 31 and the second steel sheet 32, the cross beam 2 also clamps between the third steel sheet 71 and the fourth steel sheet 72, the two stabilizing mechanisms are installed on two sides of the horizontal adjustment device 3, the side edge of the first steel sheet 31 is welded with the side edges of the two third steel sheets 71, the first steel sheet 31 and the two third steel sheets 71 are both welded with the fixed beam 41 of the relay device 4, and the second steel sheet 32 is hinged with the steel rod 55 of the swing rod 5. The stabilizing mechanism 7 can improve the firmness of the horizontal adjusting device 3 and prevent the pendulum bob 6 from shifting in the test process.

As shown in fig. 4 and 5, the relay device 4 includes a fixed beam 41, a swing arm 42, a magnetic force generator 43, and a magnetic sheet 44, wherein the upper end of the swing arm 42 is hinged to the fixed beam 41, the first steel sheet 31 and the third steel sheet 71 of the horizontal adjustment device 3 are both welded to the fixed beam 41, the magnetic force generator 43 is mounted at the lower end of the swing arm 42, the magnetic sheet 44 is mounted on the swing link 5, the magnetic force generator 43 and the magnetic sheet 44 are matched with each other, the magnetic sheet 44 can adjust the position of the magnetic sheet 44 on the steel rod 55 of the swing link 5 according to the test requirements, and the magnetic sheet 44 cannot rotate around the steel rod 55. A servo motor (not shown) is installed on the relay device 4, when the magnetic force generator 43 is powered on, the magnetic force generator 43 attracts the magnetic sheet 44 (i.e. the swing arm 42 is connected with the steel rod 55), and under the driving of the servo motor, the swing arm 42 drives the swing rod 5 to rotate upwards, and the pendulum bob 6 reaches a certain position; when the magnetic force generator 43 is not electrified, the magnetic force generator 43 is separated from the magnetic sheet 44, the swing rod 5 freely swings downwards, and the pendulum bob 6 impacts the test piece. Magnetic force generator 43 and magnetic force sheet 44 are used to pull up pendulum 6 and release pendulum 6.

As shown in fig. 6, the hammer frame 61 includes a support plate 614, a first mounting plate 612, a second mounting plate 613 and two weight plates 611, and is integrally in an "i" shape; the support plates 614 and the weight plates 611 are parallel to each other, and the two support plates 614 are located between the two weight plates 611. The two weight plates 611 are respectively fixedly connected with two ends of the first mounting plate 612, and the two weight plates 611 are also connected with two ends of the second mounting plate 613. One ends of the two support plates 614 are vertically connected with the first mounting plate 612, and the other ends of the support plates 614 are vertically connected with the second mounting plate 613; the first mounting hole 615 is located between one weight plate 611 and one support plate 614, the second mounting hole 616 is located between two support plates 614, and the third mounting hole 617 is located between the other support plate 615 and the other weight plate 611. The first mounting plate 612 and the second mounting plate 613 are the same in size and weight. The hammer frame 61 is simple in structure, the pendulum bob 6 is convenient to assemble, the counterweight plates 63 can be added or reduced according to needs, and the flexibility of test operation is improved.

As shown in fig. 7 and 8, the swing link 5 includes a steel rod 55, a first limit plate 51, a second limit plate 52, a first screw 53 and a second screw 54, and the steel rod 55 sequentially passes through the first limit plate 51, a second mounting hole 616 of the hammer frame 61 and the second limit plate 52; the first screw 53 sequentially penetrates through the first limiting plate 51, the first mounting hole 615 and the second limiting plate 52 of the hammer frame 61, the second screw 54 sequentially penetrates through the first limiting plate 51, the third mounting hole 617 and the second limiting plate 52 of the hammer frame 61, the hammer frame 61 is locked by the first limiting plate 51 and the second limiting plate 52 through bolts, the first limiting plate 51 is welded with the steel rod 55, and the second limiting plate 52 is also welded with the steel rod 55.

As shown in fig. 9 and 10, the pendulum bob 6 includes a hammer frame 61, an impact head 62, and a pressure sensor 64, the impact head 62 includes a bottom plate 621 and a semi-cylindrical steel body 622, and the semi-cylindrical steel body 622 and the bottom plate 621 are formed by casting. The hammer frame 61 is connected with the impact head 62 through a bolt, and the pressure sensor 64 is clamped and fixed with the impact head 62 through the hammer frame 61. The pressure sensor 64 is used for measuring the instant impact force of the pendulum bob 6 on the test piece; the bottom plate 621 ensures that the stress of the pressure sensor 64 is uniform, and the semi-cylindrical steel body 622 ensures that the stress of the pendulum bob 6 and the test piece is concentrated.

As shown in fig. 11, the weight plate 611 of the pendulum bob 6 may be provided with the weight plate 63 by bolts, the weight plate 63 may be provided on one side, or the weight plates 63 may be provided symmetrically. Symmetrically mounting the weight plates 63 on both sides of the weight plate 611 may prevent the center of gravity of the pendulum 6 from being shifted. The weight plate 63 serves to increase the weight of the bob 6, and has the same size and weight as the weight plate 611 of the hammer frame 61.

The installation steps of the pendulum impact tester are as follows:

first, the height-adjusting bracket 1 is assembled. Two channel steel 12 are parallelly installed on the base 11, and then the two bases 11 are installed on the ground through bolts. Then install the upper end at channel-section steel 12 respectively with the both ends of crossbeam 2 through the bolt, can be according to experimental needs, adjust crossbeam 2 upper and lower position at channel-section steel 12 to the height of adjustment crossbeam 2. Placing a first steel sheet 31 on the upper part of the cross beam 2, placing a second steel sheet 32 on the lower part of the cross beam 2, and locking the cross beam 2 by the first steel sheet 31 and the second steel sheet 32 through eight bolts; the stabilizing mechanisms 7 are positioned at two sides of the horizontal adjusting device 3, and connect the third steel sheet 71 and the fourth steel sheet 72 through eight bolts (the cross beam 2 is clamped between the third steel sheet 71 and the fourth steel sheet 72). The positions of the leveling device 3 and the stabilizing mechanism 7 are adjusted and then welded. The position of the leveling device 3 and the two stabilizing devices 7 on the cross beam 2 can be adjusted according to the test requirements.

Second, the pendulum 6 is assembled. The steel rod 55 sequentially passes through the first limiting plate 51, the second mounting hole 616 of the hammer frame 61 and the second limiting plate 52; the first screw 53 sequentially passes through the first limiting plate 51, the first mounting hole 615 of the hammer frame 61 and the second limiting plate 52; the second screw 54 sequentially passes through the first limiting plate 51, the third mounting hole 617 of the hammer frame 61 and the second limiting plate 52; the hammer frame 61 is locked by tightening the first screw 53 and the second screw 54. Then, after the position of the hammer frame 61 on the steel rod 55 is adjusted, the steel rod 55 is welded to the first limit plate 51, and then the steel rod 55 is welded to the second limit plate 52. The pressure sensor 64 is placed in the middle of the first mounting plate 612 of the hammer frame 61, the impact head 62 is placed above the pressure sensor 64, the impact head 62 is connected with the first mounting plate 612 of the hammer frame 61 through bolts, and the pressure sensor 64 is clamped and fixed by the first mounting plate 612 and the impact head 62. According to the test requirements, the same number of weight plates 63 can be mounted on the weight plates 611 of the hammer frame 61 by bolts in order to keep the center of gravity of the pendulum mass 6 balanced.

Third, the pendulum bob 6 and the relay device 4 are mounted on the height-adjusting bracket 1. The fixed beam 41 of the relay device 4, the first steel sheet 31 and the third steel sheets 71 are welded, the magnetic sheets 44 are mounted on the steel rod 55 through eight bolts, the magnetic sheets 44 are matched with the magnetic force generator 43, and the upper end of the steel rod 55 is hinged with the second steel sheet 32 in the middle. The pendulum 6 is hinged to the second steel plate 32 via the upper end of the steel rod 55.

The pendulum impact tester comprises the following steps:

fixing the test piece at a specified position, adjusting the position of the cross beam 2 on the channel steel 12 and adjusting the position of the horizontal adjusting device 3 on the cross beam 2 according to the position of the test piece. When the pendulum impact tester is started, the magnetic force generator 43 of the relay device 4 attracts the magnetic sheet 44 of the steel rod 55, the servo motor of the relay device 4 drives the swing arm 42 to rotate upwards, and simultaneously the swing arm 42 drives the swing rod 5 to rotate upwards. When the pendulum bob 6 reaches a certain height, the magnetic force generator 43 is powered off, the magnetic force generator 43 no longer adsorbs the magnetic sheet 44, and the pendulum bob 6 can freely swing down to impact the test piece.

The above-mentioned specific implementation is the preferred embodiment of the present invention, can not be right the utility model discloses the limit, any other does not deviate from the technical scheme of the utility model and the change or other equivalent replacement modes of doing all contain within the scope of protection of the utility model.

Claims (10)

1. The pendulum impact testing machine is characterized by comprising a height adjusting support, a cross beam, a horizontal adjusting device, a swinging rod and a pendulum, wherein two ends of the cross beam are respectively connected with the upper end of the height adjusting support, the horizontal adjusting device is installed on the cross beam, the horizontal adjusting device is hinged with the upper end of the swinging rod, and the pendulum is installed at the lower end of the swinging rod.

2. A pendulum impact tester as claimed in claim 1, wherein the height adjustment bracket comprises a base and a channel, the channel having a plurality of mounting holes arranged along an axial direction of the channel, the end of the beam being connected to the mounting holes by bolts, and the lower end of the channel being connected to the base.

3. A pendulum impact tester according to claim 1, wherein the level adjustment means comprises a first and a second steel plate, the first and the second steel plate being bolted together and clamping the cross-beam, the second steel plate being hinged to the pendulum.

4. A pendulum impact tester according to claim 3, wherein the first steel sheet is connected to stabilizing means on both sides, the stabilizing means comprising a third steel sheet and a fourth steel sheet, the third steel sheet and the fourth steel sheet being connected by bolts, the third steel sheet and the fourth steel sheet clamping the cross member, the third steel sheet being connected to the first steel sheet at its sides.

5. The pendulum impact tester of claim 1, further comprising a relay device, wherein the relay device comprises a swing arm, a fixed beam, a magnetic force generator, and a magnetic sheet, wherein one end of the swing arm is hinged to the fixed beam, the magnetic force generator is mounted at the other end of the swing arm, the fixed beam is connected to the leveling device, and the magnetic sheet is mounted on the swing rod; when the magnetic force generator is electrified, the magnetic force generator is connected with the magnetic sheet.

6. A pendulum impact tester as claimed in claim 1, wherein the pendulum comprises a hammer frame and an impact head, the hammer frame is mounted at the lower end of the swing link, the impact head is mounted on the impact surface of the hammer frame through a bolt, and the hammer frame is provided with a weight plate at both sides.

7. A pendulum impact tester according to claim 6, wherein the pendulum further comprises a pressure sensor, the pressure sensor being located between the frame and the impact head, the pressure sensor being connected to the impact head.

8. A pendulum impact tester as recited in claim 6, wherein the hammer carriage comprises a first mounting plate, a second mounting plate, and two weight plates, the two weight plates being fixed to opposite ends of the first mounting plate, and the two weight plates being further fixed to opposite ends of the second mounting plate, the first mounting plate and the second mounting plate both being connected to the lower end of the pendulum rod; the counterweight plate is provided with a counterweight plate through a bolt.

9. A pendulum impact tester according to claim 8, wherein two support plates are provided between the first mounting plate and the second mounting plate, the first mounting plate, the second mounting plate and the two support plates forming a second mounting hole, the second mounting hole being connected to the pendulum rod.

10. A pendulum impact tester as claimed in claim 6, wherein the impact head comprises a semi-cylindrical steel body and a base plate, the semi-cylindrical steel body is connected to a side of the base plate, and the base plate is mounted to the hammer carrier by bolts.

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