CN206387659U - Pressure testing machine - Google Patents

Abstract

The utility model discloses a kind of pressure testing machine, solve test specimen fragment and sputter the problem of coming abnormally dangerous, its drip irrigation device is, feed rod is supported by between entablature and sill, sideboard is provided between two feed rods of pressure test down side, one side of sideboard is articulated in wherein one in two feed rods, fixed dam is equipped between the adjacent feed rod of other sides of pressure testing machine, pressure testing machine of the present utility model, pass through the sideboard and fixed dam being arranged between adjacent feed rod, the space that four feed rods can be constituted, which is enclosed, to be set, to play a part of barrier, so as to avoid pressure testing machine in the process of running, the fragment of test specimen, which is sputtered, to be come, also it is avoided that the human body parts such as hand are extend into by people, between lower platen, so as to ensure that security；The sideboard being articulated on feed rod can be opened and closed to the closing space that four feed rods are formed, and be easy to pick and place test specimen and carried out associative operation.

Description

Pressure testing machine

Technical field

The utility model is related to construction material compression strength detection device, more particularly to pressure testing machine.

Background technology

Pressure testing machine is mainly used in the compressive strength test of the construction materials such as brick, cement mortar and concrete, it is also possible to In the mechanical property test of other materials.

Publication No. CN201600305U utility model discloses a kind of pressure testing machine, and it includes main body and is located at Display and controller slave beside main body, main frame include sill, oil cylinder, piston, lower platen, the double light of supporting assembling Thick stick, entablature, leading screw, top board, add a hanging plate on leading screw, and flexible adjusting pad is set between hanging plate and top board, And hanging plate is connected by bolt with top board.The quantity of wherein feed rod is generally four, respectively positioned at four sides of sill Angle, so as to which entablature is supported, to form operating space between sill.

Rotated in use, first passing through leading screw handwheel driving leading screw, so that top board rises, and test specimen is placed into lower platen On, then by leading screw driving top board decline, after the bottom surface of top board is contacted with the top surface of test specimen, test specimen can be adapted to automatically high The trickle gradient in direction is spent, two planes is contacted with each other comprehensively, so that test specimen uniform force；Then start button is pressed, Oil return valve is closed, fuel tap is sent in regulation and control, and speed steadily carries out bearing test on demand, until test specimen is crushed, load declines；Finally The pressure born when detecting that test specimen is crushed by load cell, just can obtain the compression strength of the test specimen.

But pressure testing machine is in use, if someone by the human body parts such as hand be placed in top board and lower platen it Between, human body is easily clipped to, personal injury is caused；Furthermore, test specimen is when broken, and fragment, which easily collapses, to hurt sb.'s feelings, and there is larger peace Full hidden danger.

Utility model content

The purpose of this utility model is to provide a kind of pressure testing machine that test specimen fragment can be avoided to sputter.

Above-mentioned technical purpose of the present utility model technical scheme is that：

A kind of pressure testing machine, including entablature and sill, are supported by feed rod, institute between the entablature and sill Feed rod is stated provided with four, four feed rods are arranged in four edges of sill respectively, in two light of pressure test down side Sideboard is provided between thick stick, one side of the sideboard is articulated in wherein one in two feed rods, in pressure testing machine Fixed dam is equipped between the adjacent feed rod of other sides.

, can be by four light by the sideboard and fixed dam being arranged between adjacent feed rod using such scheme The space that thick stick is constituted, which is enclosed, to be set, to play a part of barrier, so that avoid pressure testing machine in the process of running, test specimen Fragment, which is sputtered, to be come, and is also avoided that the human body parts such as hand are extend between upper and lower pressing plate by people, so as to ensure that security； The sideboard being articulated on feed rod can be opened and closed to the closing space that four feed rods are formed, and be easy to pick and place test specimen and entered Row associative operation.

Preferably, the position covered on face corresponding to feed rod of the sideboard is provided with and is adsorbed in the magnetic of feed rod side wall Property part.

Using such scheme, after sideboard closes, the movable end absorption of sideboard can be existed using magnetic part On feed rod, so as to avoid sideboard from voluntarily opening, security is improved.

Preferably, offering perforation in the position close to movable end on the sideboard.

Using such scheme, " handle " is played a part of in perforation, when sideboard is being opened, need to only insert finger Enter perforation to be pulled outwardly, just easily can open sideboard so that sideboard is more prone to put forth effort.

Preferably, the magnetic part is located at the transversal centerline position on sideboard.

Using such scheme so that sideboard by magnetic part when being adsorbed on the side wall of feed rod, its absorption affinity energy The midline position of sideboard is enough concentrated on, so as to lift stability of the sideboard when being adsorbed in feed rod and leaving feed rod.

Preferably, the perforation positioned at the side of magnetic part and is in same level position with magnetic part.

, can be first by magnetic part from feed rod using such scheme so that during sideboard is opened by perforating The separation of side wall, to release the locking of sideboard, sideboard is more prone to opening, so as to improve the facility of operation Property.

Preferably, the sideboard is covered on face in having extended vertically dividing plate close to the position of movable end, correspondence It is used to detect that infrared ray is in offering to be provided with the groove that confession dividing plate is worn, the groove on the feed rod of sideboard movable end It is no separated by dividing plate be coupled with use on the infrared detection unit of infrared detection signal, the infrared detection unit to export Detect and be coupled with the control unit of signal and output control signal, described control unit in response to control letter in receiving infrared-ray Number execution unit；

When infrared ray detection unit, which detects infrared ray, to be separated by dividing plate, the execution unit control pressure tests function Enough it is activated；Conversely, pressure testing machine can not start.

Using such scheme, after test specimen has been fixed, if staff forgets to close sideboard, pressure testing machine exists In running, easily make test specimen fragment sputter come, and people the positions such as hand can also be extend into upper and lower pressing plate it Between, there is larger potential safety hazard；Detect whether dividing plate separates infrared ray by infrared detection unit, can interpolate that active catch Whether plate has closed and the side wall of feed rod is adsorbed in by magnetic part；When sideboard closes completely, dividing plate is inserted into recessed In groove, so as to separate infrared ray, pressure testing machine is set to be activated；Conversely, when sideboard does not close, then dividing plate not every Disconnected infrared ray, so that pressure testing machine can not start, and then avoid sideboard in the state of not closing, pressure testing machine It is activated, improves security；Groove can be used for accommodating infrared detection unit, can play a part of protection, can keep away again Exempt from infrared detection unit it is exposed cause outside infrared ray by beyond dividing plate object by mistake separate.

Preferably, being also coupled in response to control signal indicate whether pressure testing machine is in described control unit The alarm unit of state can be activated.

Using such scheme, it can indicate whether sideboard has been closed using alarm unit, more hommization.

Preferably, the infrared detection unit is included in the transmitter module and receiving module being oppositely arranged, the hair Penetrate module with receiving module to be respectively located on two side walls relative in groove, the transmitter module is used to launch infrared ray, institute Stating receiving module is used for receiving infrared-ray and is extremely controlled according to whether receiving infrared ray and exporting corresponding infrared detection signal Unit.

Using such scheme, correlation infrared detection list is constituted in the transmitter module and receiving module that are oppositely arranged Member；The infrared detection cellular construction of correlation is simple, can be according to actual conditions to both on the premise of ensureing that both are relative Position be adjusted, add flexibility；Simultaneously the infrared detection unit of correlation can to transmitter module therein or Receiving module is individually replaced, so as to reduce cost.

Preferably, offering the lead-in chamfered towards sideboard in the side wall close to sideboard in the groove.

Using such scheme, the setting of lead-in chamfered enables dividing plate to be more smoothly inserted into groove, so as to prevent Dividing plate is obstructed, and adds exploitativeness.

In summary, the utility model has the advantages that：Pass through the sideboard being arranged between adjacent feed rod And fixed dam, the space that can be constituted four feed rods, which is enclosed, to be set, to play a part of barrier, so as to avoid pressure from trying Test machine in the process of running, the fragment of test specimen, which is sputtered, to be come, and is also avoided that the human body parts such as hand are extend into upper and lower pressing plate by people Between, so as to ensure that security；The sideboard being articulated on feed rod can enter to the closing space that four feed rods are formed Row is opened and closed, and is easy to pick and place test specimen and is carried out associative operation.

Brief description of the drawings

Fig. 1 is the structural representation one of the present embodiment；

Fig. 2 is the structural representation two of the present embodiment；

Fig. 3 is the circuit diagram of the present embodiment；

Fig. 4 is the circuit diagram of transmitter module and receiving module in the present embodiment.

In figure：1st, entablature；2nd, sill；3rd, feed rod；4th, sideboard；5th, fixed dam；6th, magnetic part；7th, perforate； 8th, dividing plate；9th, groove；10th, control unit；11st, execution unit；12nd, alarm unit；13rd, transmitter module；14th, receiving module；15、 Lead-in chamfered；16th, hinge.

Embodiment

The utility model is described in further detail below in conjunction with accompanying drawing.

This specific embodiment is only to explain of the present utility model, and it is not to limitation of the present utility model, ability Field technique personnel can make the modification without creative contribution to the present embodiment as needed after this specification is read, but As long as all being protected in right of the present utility model by Patent Law.

A kind of pressure testing machine disclosed in the present embodiment, as shown in figure 1, including entablature 1 and sill 2, entablature 1 with Sill 2 is above and below and is oppositely arranged.Feed rod 3 is supported by between entablature 1 and sill 2, feed rod 3 is provided with four, four Feed rod 3 is arranged in four edges of sill 2 respectively, i.e., the fulcrum Common arrangements of four feed rods 3 constitute rectangle.And feed rod 3 in being vertically arranged, so that can form operating space between entablature 1 and sill 2.

As shown in figure 1, being provided with sideboard 4, the one of sideboard 4 between two feed rods 3 of pressure test down side While being articulated in wherein one in two feed rods 3, it is preferred to use hinge 16 is pivotally connected, and one of blade of hinge 16 passes through The side wall of screw and feed rod 3 is fixed, and another blade is fixed also by the face that covers of screw and sideboard 4.And The quantity of hinge 16 is preferably two, and length direction of two hinges 16 along feed rod 3 is in symmetric arrays, so that sideboard Connection between 4 and feed rod 3 is more firm, and the folding of sideboard 4 is more stablized.

The width of sideboard 4 should be greater than the distance between adjacent feed rod 3, when sideboard 4 closes, its movable end The face of covering can be connected on feed rod 3.

As shown in Fig. 2 the position covered on face corresponding to feed rod 3 of sideboard 4 is provided with and is adsorbed in the magnetic of the side wall of feed rod 3 Property part 6, magnetic part 6 is preferably permanent magnet, and the material of feed rod 3 is No. 45 steel, magnetic part 6 is firmly adsorbed in feed rod 3 Side wall, so that the movable end of sideboard 4 is adsorbed on feed rod 3, make sideboard 4 can not opens voluntarily.

As shown in Fig. 2 offering perforation 7 in the position close to movable end on sideboard 4, the diameter of perforation 7 is preferably 2 Centimetre, finger is easily inserted into perforation 7.Magnetic part 6 is located at the transversal centerline position on sideboard 4, perforation 7 Same level position is in positioned at the side of magnetic part 6 and with magnetic part 6.

As shown in figure 1, being equipped with fixed dam 5, fixed dam 5 between the adjacent feed rod 3 of other sides of pressure testing machine Width also should be greater than the distance between adjacent feed rod 3, and fixed dam 5 left and right side respectively by screw with it is adjacent Feed rod 3 is fixed.And the quantity of fixed plate is three pieces, so as to which the interval between other feed rods 3 is blocked.

The material of sideboard 4 is preferably transparent acrylic board, and when sideboard 4 closes, staff can also see Observe the internal condition of pressure testing machine, more hommization.

As shown in Fig. 2 sideboard 4 is covered on face in having extended vertically dividing plate 8 close to the position of movable end, wherein every The length direction of plate 8 is perpendicular to the plate face direction of sideboard 4, and two end faces of dividing plate 8 go to upper and lower setting respectively.Correspondence In offering the groove 9 that wears for dividing plate 8, the height of groove 9 and the height one of dividing plate 8 on the feed rod 3 of the movable end of sideboard 4 Cause, when sideboard 4 closes completely, dividing plate 8 can be inserted just in the centre position of groove 9, groove 9 in close to active catch The side wall of plate 4 offers the lead-in chamfered 15 towards sideboard 4, by lead-in chamfered 15 dividing plate 8 is successfully inserted Enter in groove 9, be difficult to block.

As shown in figure 3, being provided with groove 9 is used to detect whether infrared ray is separated to export infrared detection letter by dividing plate 8 Number infrared detection unit, infrared detection unit includes in the transmitter module 13 that is oppositely arranged and receiving module 14, such as Fig. 2 Shown, transmitter module 13 is located on two side walls relative in groove 9 respectively with receiving module 14, and is preferably disposed on respectively recessed Upper and lower two side walls of groove 9.

As shown in figure 4, transmitter module 13 be used for launch infrared ray, it include NE555 timers A1, resistance R1, R2, R3, Electric capacity C1, C2 and infrared transmitting tube L1；NE555 timers A1 1 pin ground connection, resistance R1 is coupled to NE555 timers A1 2 pin And 3 between pin；Infrared transmitting tube L1 anode is coupled to 3 pin, and negative electrode is grounded by resistance R3, and resistance R3 plays the work of current limliting With can effectively prevent infrared transmitting tube L1 from being damaged because electric current is excessive；NE555 timers A1 5 pin are connect by electric capacity C2 Ground；The resistance R2 and electric capacity C1 being connected in series, resistance the R2 other end are coupled to voltage vcc, electric capacity C1 other end ground connection； NE555 timers A1 6 pin are coupled to resistance R2 and electric capacity C1 tie point；Above-mentioned connected mode constitutes 555 multi-harmonic-oscillations Device, it can export the wave of oscillation of certain frequency in infrared transmitting tube L1, infrared transmitting tube L1 is exported the infrared ray of specific wavelength Act on receiving module 14.

As shown in figure 4, receiving module 14 is used for receiving infrared-ray and according to whether receives infrared ray and export corresponding Infrared detection signal, it include infrared receiving tube L2, resistance R4, R5, R6, R7, R8, R9, electric capacity C3, C4, diode D1 and Comparator A2；Infrared receiving tube L2 plus earth, negative electrode is coupled to electric capacity C3 one end；The electric capacity C3 other end is coupled to two Pole pipe D1 anode, diode D1 negative electrode is coupled to resistance R6 one end, and the resistance R6 other end is coupled to comparator A2's Inverting input；Resistance R4 one end is coupled to electric capacity C3 and diode D1 tie point, other end ground connection；Electric capacity C4 one end It is coupled to diode D1 negative electrode, other end ground connection；Resistance R5 one end is coupled to electric capacity C4 and resistance R6 tie point, another End ground connection；Resistance R7 one end is coupled to voltage E, and the other end is coupled to comparator A2 in-phase input end；Resistance R8 one end It is coupled to comparator A2 in-phase input end, other end ground connection；Resistance R9 one end is coupled to comparator A2 output end, another End output infrared detection signal.

As shown in figure 4, resistance R7 and R8 constitute bleeder circuit, benchmark electricity is provided for comparator A2 in-phase input end Pressure, reference voltage value is determined by ratio shared in voltage E resistance R8.The meeting when infrared receiving tube L2 receives infrared ray Electric current is produced, and is become by force from weak with ultrared, electric current, which can be also followed from small, becomes big, makes comparator A2 inverting input Voltage gradually rises；When the voltage of inverting input is more than the reference voltage value of in-phase input end, comparator A2 passes through resistance R9 exports low level infrared detection signal.

Conversely, when infrared receiving tube L2 is not received by infrared ray or very weak infrared ray, comparator A2's is anti-phase defeated Enter terminal voltage close to zero, the infrared detection signal that at this moment comparator A2 passes through resistance R9 output high level；Wherein diode D1 plays rectified action, and electric capacity C4 plays filter action, and resistance R6 plays metering function, prevents input comparator A2 electric current mistake Cause comparator A2 to damage greatly, resistance R9 also functions to metering function, prevent that the electric current that comparator A2 is exported is excessive.

As shown in figure 3, being coupled with infrared detection unit for receiving infrared-ray detection signal and output control signal Control unit 10, control unit 10 include relay KA, the triode Q1 of NPN type and sustained diode 2, relay KA's One end of coil is coupled to voltage V1, and the other end is coupled to triode Q1 colelctor electrode, and triode Q1 base stage is coupled to resistance R9 output end, grounded emitter, sustained diode 2 and relay KA coil inverse parallel.

As shown in figure 3, be coupled with the execution unit 11 in response to control signal in control unit 10, execution unit 11 be after Electrical equipment KA normally opened contact KA-1, it is series in the current supply circuit of pressure testing machine, the current supply circuit of pressure testing machine and also gone here and there It is associated with the start button SB-1 for control pressure testing machine start and stop.

When infrared ray detection unit, which detects infrared ray, to be separated by dividing plate 8, the control pressure of execution unit 11 experiment function Enough it is activated；Conversely, pressure testing machine can not start.

As shown in figure 3, being also coupled in response to control signal indicate whether pressure testing machine is in control unit 10 The alarm unit 12 of state can be activated, alarm unit 12 includes relay KA normally-closed contact KA-2 and start button SB-1 The normally opened button SB-2 of linkage and buzzer SP, relay KA normally-closed contact KA-2 one end are coupled to voltage V2, the other end Normally opened button SB-2 one end is coupled to, the normally opened button SB-2 other end is coupled to buzzer SP one end, buzzer SP's The other end is grounded.

Specific work process is as follows：

When sideboard 4 is in open mode, dividing plate 8 is also not inserted among groove 9, receiving module 14 is connect Infrared ray is received, so as to export low level infrared detection signal to triode Q1 base stage, ends triode Q1, relay Device KA coil is in power failure state, and its corresponding normally opened contact KA-1 disconnects, the current supply circuit of cut-out pressure testing machine, simultaneously Relay KA normally-closed contact KA-2 is in closure state, if it is also same now to press start button SB-1, normally opened button SB-2 When close, but pressure testing machine can not start, and buzzer SP can sound the alarm, to remind staff's fixed dam 5 are currently under open mode.

If desired start pressure testing machine, after correctly test specimen is installed, close sideboard 4, be adsorbed in magnetic part 6 The outer wall of feed rod 3, now the dividing plate 8 on sideboard 4 be just inserted into groove 9, sent with separating by transmitter module 13 Infrared ray, receiving module 14 is not received, so as to export the infrared detection signal of high level to triode Q1 base Pole, turns on triode Q1, and relay KA coil obtains electric adhesive, its corresponding normally opened contact KA-1 closure, and normally-closed contact KA-2 disconnects, if now pressing start button SB-1, pressure testing machine can normally start, and buzzer SP does not alarm.Pressure In the process of running, sputtering the test specimen fragment come can be by 5 barrier of sideboard 4 and fixed dam, simultaneously for force tester Human hand can not be stretched between upper and lower pressing plate, and then ensure that security.

Claims (9)

1. a kind of pressure testing machine, including entablature (1) and sill (2), are propped up between the entablature (1) and sill (2) Support has feed rod (3), and the feed rod (3) is provided with four, and four feed rods (3) are arranged in four edges of sill (2) respectively, its It is characterized in：Sideboard (4), one side of the sideboard (4) are provided between two feed rods (3) of pressure test down side Wherein one in two feed rods (3) is articulated in, fixed gear is equipped between the adjacent feed rod (3) of other sides of pressure testing machine Plate (5).

2. pressure testing machine according to claim 1, it is characterized in that：The covering for sideboard (4) corresponds on face The position of feed rod (3) is provided with the magnetic part (6) for being adsorbed in feed rod (3) side wall.

3. pressure testing machine according to claim 2, it is characterized in that：In close to movable end on the sideboard (4) Position offers perforation (7).

4. pressure testing machine according to claim 3, it is characterized in that：The magnetic part (6) is located on sideboard (4) Transversal centerline position.

5. pressure testing machine according to claim 4, it is characterized in that：The perforation (7) is located at the side of magnetic part (6) simultaneously Same level position is in magnetic part (6).

6. pressure testing machine according to claim 1, it is characterized in that：The sideboard (4) is covered on face in close The position of movable end has extended vertically dividing plate (8), and dividing plate is supplied corresponding to being offered on the feed rod (3) of sideboard (4) movable end (8) being provided with the groove (9) worn, the groove (9) is used to detect whether infrared ray is separated to export infrared ray by dividing plate (8) Detect to be coupled with the infrared detection unit of signal, the infrared detection unit and detect signal and defeated for receiving infrared-ray Go out in the control unit (10) of control signal, described control unit (10) execution unit being coupled with response to control signal (11)；

When infrared ray detection unit, which detects infrared ray, to be separated by dividing plate (8), execution unit (11) the control pressure experiment Machine can be activated；Conversely, pressure testing machine can not start.

7. pressure testing machine according to claim 6, it is characterized in that：Be also coupled in described control unit (10) in response to Control signal can be activated the alarm unit (12) of state to indicate whether pressure testing machine is in.

8. pressure testing machine according to claim 6, it is characterized in that：The infrared detection unit includes being in be oppositely arranged Transmitter module (13) and receiving module (14), the transmitter module (13) is located in groove (9) respectively with receiving module (14) On two relative side walls, the transmitter module (13) is used to launch infrared ray, and the receiving module (14) is used to receive infrared Line simultaneously according to whether receives the corresponding infrared detection signal of infrared ray output to control unit (10).

9. pressure testing machine according to claim 6, it is characterized in that：In close to sideboard (4) in the groove (9) Side wall offers the lead-in chamfered (15) towards sideboard (4).