CN104155197A - Electrically controlled impact tester - Google Patents

Abstract

The invention discloses an electronically controlled collision testing machine, which comprises a plunger cylinder, a gear, a force storage spring, a push rod and a workbench; a rack is connected horizontally to the piston rod of the plunger cylinder; the rack is arranged above the gear and connected to the Gear meshing; the gear includes a gear housing and a runner; the runner is arranged in the gear housing and can rotate in the gear housing; the runner is provided with a groove; the groove is provided with an inner tooth block connected by a pin; the inner The bottom of the tooth block is set in an arc shape; the central axis of the runner is provided with a spring rod; one end of the spring rod extends into the arc of the inner tooth block; the spring rod is controlled by a permanent magnet and an electromagnetic coil; the tail end of the push rod is connected to the power storage spring; the push rod is connected with the runner through a string; the top of the push rod is provided with a bumper; the workbench is arranged directly below the push rod; while the present invention eliminates the influence of hydraulic damping in the test, according to the observed experimental data, The adjustment of the test structure effectively improves the convenience of the test operation, and can adapt to the needs of crash tests with various variables.

Description

An electronically controlled crash testing machine

technical field

The invention relates to an electronically controlled collision testing machine, which belongs to the technical field of mechanical engineering.

Background technique

At present, the R&D and production of products are mostly developed along the direction of safety, energy saving, and environmental protection. Among them, the degree of emphasis on safety has obviously been set at the top by major manufacturers, and material reliability is taken as the key point of product safety research. An important one has been continuously deepened. Therefore, in order to know the impact resistance of the required materials, a multi-impact impact test machine came into being. Among the known test machines, there are many difficulties in operation, and there are hydraulic pressure in the impact return process. The damping effect does not match the actual collision effect, etc. It is difficult to meet the scientific requirements of the test. Therefore, there is an urgent need for a test that can effectively improve the operation convenience of the test and can adapt to the needs of various variable collision tests. machine.

Contents of the invention

In view of the above-mentioned technical problems, the object of the present invention is to propose an electronically controlled impact testing machine, which can adjust the experimental structure according to the observed experimental data while eliminating the influence of hydraulic damping in the test, and effectively improve It improves the operation convenience of the test and can adapt to the needs of various variable crash tests.

The technical solution of the present invention is realized as follows: an electronically controlled collision testing machine, including a plunger cylinder, a gear, a power storage spring, a push rod and a workbench; the piston rod of the plunger cylinder is horizontally connected with a rack The rack is arranged above the gear and meshed with the gear; the gear includes a gear housing and a runner; the runner is arranged in the gear housing and can rotate in the gear housing; the runner is provided with a concave slot; the groove is provided with an inner tooth block connected by a pin; the bottom of the inner tooth block is arranged in an arc; the central axis of the runner is provided with a spring rod; one end of the spring rod extends into the The arc of the gear block controls the movement and fixation of the runner and the gear housing; the spring rod is controlled by a permanent magnet and an electromagnetic coil; the tail end of the push rod is connected to a power storage spring; It is connected with the runner; the top of the push rod is provided with a bumper; the workbench is set directly below the push rod; when working, the piston rod of the plunger cylinder is stretched out to move the rack, thereby driving the gear to rotate. , the inner tooth block and the spring rod are fixed to make the gear housing and the runner rotate together, and the runner pulls the string to make the push rod rise, the power storage spring is compressed to store power, the bumper is lifted, and is in the state of being ready for collision; when the electromagnetic When the coil is fed with current, the permanent magnet drives the spring rod to rotate, making the inner tooth block and the runner move, and the runner is no longer hindered by the gear housing to rotate, and the string connected to the runner is loosened, and the stored force spring moves toward the The potential energy is released downward, so that the push rod moves downward and collides with the workpiece set on the workbench.

Preferably, a slider is installed on the rack; and the slider is installed on a guide rail matched with it.

Preferably, a scroll spring is provided at one end of the guide rail; a tough steel belt is connected between the slider and the scroll spring.

Preferably, a position sensor is provided on one side of the workbench for detecting the position of the striking head.

Due to the application of the above-mentioned technical solution, the present invention has the following advantages compared with the prior art:

In the electronically controlled impact testing machine of the present invention, a rack is connected to the piston rod of the plunger cylinder, the rack is meshed with the gear and the tail end of the push rod is connected to the power storage spring, and the push rod passes through the string and the runner. Connected, there is a bumper on the top of the push rod, and the worktable is set directly below the push rod. When measuring the collision, the force is stored on the power storage spring, and then the gear controls the push rod to transfer the accumulated pressure through the push rod and the bumper. Applied on the workpiece to realize collision; while eliminating the influence of hydraulic damping in the test, the experimental structure is adjusted according to the observed experimental data, which effectively improves the operation convenience of the test and can adapt to various variable collision test requirements .

Description of drawings

Below in conjunction with accompanying drawing, technical solution of the present invention will be further described:

Accompanying drawing 1 is the schematic diagram of a kind of electric control impact testing machine of the present invention;

Accompanying drawing 2 is the internal schematic diagram of the gear of a kind of electric control collision testing machine of the present invention;

Accompanying drawing 3 is the internal fixed state diagram of the gear of a kind of electric control collision testing machine of the present invention;

Accompanying drawing 4 is a diagram of the internal activity state of a gear of an electronically controlled impact testing machine of the present invention.

Among them: 1. Plunger cylinder; 2. Gear; 3. Energy storage spring; 4. Push rod; 5. Workbench; 6. Piston rod; 7. Rack; 8. String; Slider; 11, guide rail; 12, scroll spring; 13, tough steel belt; 14, position sensor; 15, hydraulic control system; 16, gear housing; 17, runner; 18, spring rod; 19, pin shaft ; 20, inner tooth block; 21, permanent magnet; 22, electromagnetic coil; 23, groove.

Detailed ways

The present invention is described below in conjunction with accompanying drawing.

Shown in accompanying drawing 1-4 is a kind of electronically controlled impact testing machine of the present invention, comprises plunger cylinder 1, gear 2, power storage spring 3, push rod 4 and workbench 5; Said plunger cylinder 1 The piston rod 6 is horizontally connected with a rack 7, the rack 7 is arranged above the gear 2 and meshes with the gear 2, and the gear 2 is driven to rotate by the movement of the rack 7; the gear 2 includes a gear housing 16, a runner 17 The runner 17 is arranged in the gear housing 16 and can rotate in the gear housing 16; the runner 17 is provided with a groove 23; tooth block 20; the bottom of the inner tooth block 20 is arranged in an arc; the central axis of the runner 17 is provided with a spring rod 18; one end of the spring rod 18 extends into the arc of the inner tooth block 20 to control the runner 17 and the activity and fixation of the gear housing 16; the spring bar 18 is controlled by the permanent magnet 21 and the electromagnetic coil 22; the tail end of the push rod 4 is connected to the storage spring 3; 2 are connected; the top of the push rod 4 is provided with a bumper 9, the workbench 5 is arranged directly below the push rod 4, and the gear 2 pulls the power storage spring 3 to compress the power storage; the rack 7 is equipped with a slider 10 The slide block 10 is installed on the guide rail 11 matched with it; the guide rail 11 is provided with a scroll spring 12 at one end; a tough steel belt 13 is connected between the slide block 10 and the scroll spring 12; the workbench 5 side is provided with position sensor 14, is used for detecting the position of bumper 9; Described plunger cylinder 1 controls the motion of piston rod through hydraulic control system 15, and hydraulic control system 15 is prior art, and the present invention will not repeat description.

When working, the plunger cylinder 1 pushes the rack 7 to the left to move under the control of the hydraulic control system 15, thereby driving the gear 2 to rotate counterclockwise. One end face is stuck on the inner wall of the gear housing 16, so that the runner 17 and the gear housing 16 rotate counterclockwise together, the runner 17 tightens the string 8, the power storage spring 3 compresses and stores power, the bumper 9 is lifted, and Collision; under the control of the program, the electromagnetic coil 22 feeds a reverse current, and the permanent magnet 21 pushes the spring bar 18 to the active state under the force of the electromagnetic coil 22. At this time, one end surface of the inner gear block 20 is in contact with The gear housing 16 moves with each other, and the clockwise rotation of the runner 17 is no longer hindered by the gear housing 16. When it rotates clockwise, the string 8 connected with the runner 17 is loosened, and the power storage spring 3 releases potential energy downwards, and the push rod 4 Under the action of the spring force, start the collision test on the workpiece. While eliminating the influence of hydraulic damping in the test, adjust the experimental structure according to the observed experimental data. A position sensor 14 is installed on one side of the workbench 5. In detecting the position of the collision head 9, the overall structure is adjusted according to different situations and materials.

In order to ensure that the rack 7 can slide along a straight line, a slide block 10 and a guide rail 11 are installed on it, and the end of the slide block 10 and the scroll spring 12 on the right side are connected with a slender tough steel strip 13 to ensure that when the impact is completed and When the oil pressure is unloaded, the piston rod of the plunger cylinder 1 is automatically rebounded.

In the present invention, the piston rod 6 of the plunger cylinder 1 is connected with a rack 7, the rack 7 is meshed with the gear 2 and the tail end of the push rod 4 is connected to the power storage spring 3, and the push rod 4 is connected to the gear 2 through the string 8. Connected, the top of the push rod 4 is provided with a bumper 9, and the workbench 5 is set directly below the push rod 4 and the bumper 9. When measuring the collision, the active force is stored on the power storage spring 3, and then the push rod is controlled by the gear 2 4. The accumulated pressure is applied to the workpiece through the push rod 4 and the bumper 9 to realize the collision; while eliminating the influence of hydraulic damping in the test, the experimental structure is adjusted according to the observed experimental data, which effectively improves the test performance. It is easy to operate and can adapt to various variable collision test requirements.

The above-mentioned embodiments are only to illustrate the technical conception and characteristics of the present invention. Substantial equivalent changes or modifications shall fall within the protection scope of the present invention.

Claims (4)

1. an automatically controlled collision tester, is characterized in that: comprise plunger case, gear, hold power spring, push rod and worktable; On the piston rod of described plunger case, level connection joint has tooth bar; Described tooth bar is arranged on gear top and meshes with gear; Described gear comprises gear housing and runner; Described runner is arranged in gear housing and can in gear housing, rotates; Described runner is provided with groove; In described groove, be provided with the internal tooth piece connecting by bearing pin; Arc is arranged in described internal tooth piece bottom; The central axis of described runner is provided with spring lever; Internal tooth piece arc place is stretched in described spring lever one end, and the activity of runner and gear housing of controlling is with fixing; Described spring lever is rotated by permanent magnet and solenoid controlled; Power spring is held in the tail end connection of described push rod; Described push rod is connected with runner by cord; The top of described push rod is provided with rams; Described worktable be arranged on push rod under; During work, the piston rod of plunger case stretches out tooth bar is moved, thereby driven gear rotates, now, internal tooth piece fixes gear housing is rotated together with runner with spring lever, and runner pulls cord to make push rod increase, hold the compressed power of holding of power spring, ram and be raised, in treating collision status; When solenoid passes into electric current, permanent magnet drives spring lever to rotate, make internal tooth piece and runner become active state, runner is hindered by gear housing no longer and rotates, the cord being connected with runner loosens, the power spring of holding discharges potential energy downwards, makes push rod move downward collision and is arranged on the workpiece on worktable.

2. a kind of automatically controlled collision tester as claimed in claim 1, is characterized in that: on described tooth bar, slide block is installed; Described slide block is arranged on the guide rail being mated.

3. a kind of automatically controlled collision tester as claimed in claim 2, is characterized in that: described guide rail one end is provided with scroll spring; Between described slide block and scroll spring, be connected with tough steel band.

4. a kind of automatically controlled collision tester as claimed in claim 1, is characterized in that: described worktable one side is provided with position transducer, for detection of the position of raming.