CN2781347Y

CN2781347Y - Spring fatigue testing machine

Info

Publication number: CN2781347Y
Application number: CN 200520070571
Authority: CN
Inventors: 周平钢
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-04-11
Filing date: 2005-04-11
Publication date: 2006-05-17
Anticipated expiration: 2015-04-11

Abstract

The utility model relates to a spring fatigue testing machine, specifically speaking are used for various compression and extension spring's fatigue life test, belong to mechanical equipment technical field. The main shaft is mounted on the motor, the large and small eccentric wheels are mounted on the main shaft, the balance wheel is connected with the eccentric wheels, the pressing plate and the adjusting plate are mounted on the main shaft, the spring is mounted between the pressing plate and the adjusting plate, the roller wheel is mounted on the balance wheel, the spring fatigue testing device is mounted on the machine base, and the electric control cabinet is connected with the spring fatigue testing device. The utility model has simple, compact and reasonable structure; the device has the functions of accurate compression or extension length and adjustable test frequency; the existing multiple stations are broken through from a common single station, the compression spring and the extension spring can be tested by developing from a single compression spring in function, and the test can be simultaneously carried out when the amplitudes and the frequencies of the tension spring and the compression spring are the same; the operation is simple, the work is reliable, the confidence coefficient of the test result is extremely high, the frequency adjusting range is large, the noise is small, and the vibration is small.

Description

The spring fatigue test machine

Technical field

The utility model relates to a kind of spring fatigue test machine, specifically is used for the fatigue life test of various compressions and extension spring, belongs to mechanical equipment technical field.

Background technology

Before the utility model was made, in prior art, the fatigue life test of compression and extension spring normally was made up of support, toggle, spring base and governor motion etc.Reciprocating by the motor drives toggle, to carry out single group (individual) spring and carry out fatigue life test, this kind structure is just at single compression spring, and therefore, tired spring number test is few, and frequency-tuning range is little, and noise is big, and vibration is big.

Technology contents

The purpose of this utility model is to overcome above-mentioned weak point, thereby provides a kind of simple, compact and reasonable for structure; Make its have compression or tensile elongation (spring amplitude) accurately, function that test frequency is adjustable; Break through into existing multistation from common single station, develop into compression and extension spring all can be tested from single compression spring on the function, when extension spring and stage clip amplitude, the spring fatigue test machine that can test simultaneously when frequency is identical.

Main solution of the present utility model is achieved in that

The utility model mainly adopts main shaft 6 to be contained on the motor 1,

eccentric wheel

3,4 is contained on the main shaft 6, escapement 11 is connected with

eccentric wheel

3,4, location-plate 2 is contained on the support 19, compression plate 9, adjustment disk 5 are contained in respectively on the main shaft 6, and spring 8 is contained between compression plate 9 and the adjustment disk 5, and roller 10 is contained on the escapement 11, mounting spring fatigue experimental device 20 on support 19, electrical control cabinet is connected with spring fatigue test device 20 and motor 1.

Spring fatigue test device 20 adopts installing connecting rods 12 between escapement 11 and pull bar 13, is tried spring 14 and is installed between pull bar 13 and the screw rod 16, and mounting spring 15 on screw rod 16, and push rod 17 is contained in the screw rod 16.

Compared with the prior art the utility model has the following advantages:

The utility model is simple, compact and reasonable for structure; Make its have compression or tensile elongation (spring amplitude) accurately, test frequency is adjustable (maximum can reach 3000 times/minute) function; Also having real-time digital shows test frequency and test number (TN), the disconnected automatic detection of spring and warning, data maintenance, presets the number of times set-up function; Break through existing multistation (twelve-station) from common single station, develop into compression and extension spring all can be tested from single compression spring on the function, when extension spring with the stage clip amplitude, can test simultaneously when frequency is identical; Simple to operate, reliable operation, the test findings degree of confidence is high, frequency-tuning range is big, noise is little, vibrates little.

Description of drawings

Fig. 1 is the utility model structure vertical view.

Fig. 2 is the utility model structure A-A cut-open view.

Fig. 3 is the utility model circuit frame principle figure.

Embodiment

Embodiment during following the utility model is incited somebody to action in conjunction with the accompanying drawings is further described:

The utility model mainly is made up of motor 1, location-plate 2,

eccentric wheel

3,4, adjustment disk 5, main shaft 6, gland nut 7, spring 8, compression plate 9, roller 10, escapement 11, connecting rod 12, pull bar 13, spring 14, spring 15, screw rod 16, push rod 17, travel switch 18, support 19 and spring fatigue test device 20 etc.Adopt main shaft 6 to be contained on the motor 1, size

eccentric wheel

3,4 is contained on the main shaft 6 by key, escapement 11 is connected with

eccentric wheel

3,4 by rolling bearing, location-plate 2 is contained on the support 19, and compression plate 9, adjustment disk 5 are contained in respectively on the main shaft 6, and spring 8 is contained between compression plate 9 and the adjustment disk 5, gland nut 7 is contained on the main shaft 6, roller 10 is contained on the escapement 11, mounting spring fatigue experimental device 20 on support 19, and electrical control cabinet is connected with spring fatigue test device 20.Spring fatigue test device 20 adopts 1-12, represents 12 stations.Spring fatigue test device 20 respectively mainly by pull bar 13, connecting rod 12, tried spring 14, spring 15, screw rod 16, push rod 17 and travel switch 18 etc. and formed.Employing is installing connecting rods 12 between escapement 11 and pull bar 13, tried spring 14 and be installed between pull bar 13 and the screw rod 16, mounting spring 15 on screw rod 16, and push rod 17 is contained in the screw rod 16, travel switch 18 is installed on support 19, and travel switch 18 ejects spring base 15 by push rod 17.

Principle of work of the present utility model:

The utility model utilizes the reciprocating and realization spring to-and-fro movement of eccentric rotary drawing pull bar.Break through into existing multistation (twelve-station) from common single station in the mechanism, develop into compression and extension spring all can be tested from single compression spring on the function, when extension spring with the stage clip amplitude, can test simultaneously when frequency is identical.

The course of work of the present utility model is as follows:

Unclamp gland nut 7 during work, compression plate 9 is thrown off with the mouse shape tooth of adjustment disk 5 end faces under the effect of spring 8.Rotating adjustment disk 9 makes the large eccentricity wheel 4 and the relative angle variation of small eccentricity 3 obtain required eccentric throw, corresponding is exactly required compression of test spring or tensile elongation with it, locking gland nut 7 is adjusted precompressed or the prestretching length of being tried spring 14 by screw rod 16.

Starter motor 1 rotates main shaft 6, and escapement 11 is reciprocating by connecting rod 12 drawing pull bar 13 under the driving of eccentric moment, thereby is made reciprocal fatigue life test to trying spring 14.

Adopt tachogenerator to connect ten two road pulse switching circuits in the utility model circuit frame principle figure, ten two road pulse switching circuits are connected with photoelectric isolating circuit respectively, photoelectric isolating circuit is connected with host SCM (CPU), slave (CPU) respectively, slave (CPU) connects, slave (CPU) is connected with counting display circuit, clear circuit respectively, and host SCM (CPU) is connected with counting display circuit, frequency display circuit, keyboard, controlling output circuit, speed governing output circuit and storer respectively.

The utility model counting, meter frequency and control circuit are controlled automatically by single chip microcomputer, and parameter is imported by touch keyboard, adjustment and display frequency automatically in real time.

Ten two tunnel count signal and total reset signal all adopt photoelectricity to isolate, and antijamming capability is strong, the reliability height.Wherein, tachogenerator, ten three road pulse switching circuits, Single-chip Controlling, all by the circuit integral body electric control cabinet of packing into, motor is by variable frequency regulating speed control for photoelectricity partitions etc.

Technical requirement:

1, maximum count scope 999999 (* hundred times);

2, maximum (top) speed 3000 (rev/min);

But the tester numerical value of 3 preset point when reaching the value of setting, automatically shuts down motor and stops test.

4, ten two road spring pilot passageway, all there is test switch on every road, test switch automatic cutout when the spring fault, corresponding counter stops counting.

5, total zero clearing and independent reset switch are arranged;

Automatically preserve count value when 6, cutting off the power supply, read the enumeration data of last time during start automatically;

7, the parameter automatic power cutoff protector time is more than 10 years.

Operation instructions:

1, the setting of parameter

But the utility model preset trial total degree, when count value reaches auto stop when presetting, the frequency display window shows that simultaneously " GOOD " expression finishes test.

By " setting " key, number window shows prevalue, and last digit is flashing simultaneously, moves to the position that will revise with "＜" shift key, cooperates " ∧ " or " ∨ " key to revise numeral, sets up by " setting " key and returns, and the parameter that has then just set up is preserved automatically.

2, method of operating

On request can be by " zero clearing " key to all number window zero clearings, also can be separately to a certain road counter

Zero clearing.

By "start" button, the testing machine running, counter is counted simultaneously, and real-time display frequency, and scalable " at a high speed " circuit carries out real time high-speed.

By " oil pump " switch, can open oil pump.

When a certain road spring disconnected, corresponding counter stopped counting, and " counting " pilot lamp is dark simultaneously.

Claims

1, a kind of spring fatigue test machine, it is characterized in that adopting main shaft (6) to be contained on the motor (1), eccentric wheel (3,4) is contained on the main shaft (6), escapement (11) is connected with eccentric wheel (3,4), location-plate (2) is contained on the support (19), compression plate (9), adjustment disk (5) are contained on the main shaft (6), spring (8) is contained between compression plate (9) and the adjustment disk (5), roller (10) is contained on the escapement (11), go up mounting spring fatigue experimental device (20) at support (19), electrical control cabinet is connected with spring fatigue test device (20) and motor (1).

2, spring fatigue test machine according to claim 1, it is characterized in that described spring fatigue test device (20) adopts installing connecting rods (12) between escapement (11) and pull bar (13) respectively, being tried spring (14) is installed between pull bar (13) and the screw rod (16), go up mounting spring (15) at screw rod (16), push rod (17) is contained in the screw rod (16).

3, spring fatigue test machine according to claim 1 is characterized in that described spring fatigue test device (20) adopts 1-12.

4, spring fatigue test machine according to claim 1 is characterized in that described at the last travel switch (18) of installing of support (19).