CN220271054U - Impact toughness instrument for coarse aggregate impact test - Google Patents

Abstract

The utility model relates to an impact toughness instrument for coarse aggregate impact test, which comprises a base and a bottom plate, wherein a cylinder is fixedly arranged on the bottom plate; the top of bottom plate is equipped with the roof, be equipped with vertical gliding first slider on each vertical guide arm, still be fixed between roof and the bottom plate and be equipped with hammering support, hammering support and each first slider fixed connection, hammering support's bottom is fixed and is equipped with the tup, still be equipped with control assembly between roof and the hammering support, control assembly includes the locating support, the installation piece, electro-magnet, and control lever, be equipped with screw thread portion on the control lever, be equipped with on the roof can with screw thread portion screw thread fit's screw, the locating support carries out lifting adjustment through the rotation of control lever, hammering support's upper end is equipped with the first magnetic path that can be connected with the electro-magnet cooperation, the electro-magnet carries out altitude mixture control through the cooperation of control lever and locating support, and through the whereabouts of getting electrode and first magnetic path cooperation control tup. The utility model has smart structure, high efficiency and convenience.

Description

Impact toughness instrument for coarse aggregate impact test

Technical Field

The utility model relates to the field of toughness meters, in particular to an impact toughness meter for coarse aggregate impact test.

Background

Currently, in highway engineering, an impact value is an important index for judging the quality of coarse aggregates. The coarse aggregate impact test is to load coarse aggregate into a test mould with fixed size, impact the coarse aggregate at a fixed height by adopting a counterweight impact block, and measure the impact resistance of the coarse aggregate for pavement, wherein the impact value is expressed by the mass percentage of the part smaller than 2.36mm after the test. Specific operations and parameters are specified in JTGE42-2005, T0322-2000, highway engineering aggregate test procedure. Test requirements: the mass of the impact hammer is 13.75kg plus or minus 0.05kg, and the bottom surface of the impact hammer is 380mm plus or minus 5mm above the aggregate; hammering the aggregate 15 times by the impact hammer at the required height, wherein the hammering interval of each hammering is not less than 1s; after the first hammer blow, the height is not adjusted.

The existing impact testing machine needs to manually lift the impact hammer after the impact hammer runs down, and the impact hammer hammers aggregate in free falling body motion. The existing impact testing machine needs a tester to manually lift the impact hammer, the impact hammer is buckled and hung on the unloading hook, the unloading hook is loosened, and the impact hammer hammers aggregate in a free falling body motion. Then because the impact hammer is heavier, and in some special cases, the weight of the impact hammer is required to be added, the abrasion between the hammer buckle and the unloading hook is accelerated, the damage caused by the abrasion is on the hanging part of the worker in the process of lifting the impact hammer, or the unloading hook is not opened after the worker is hung, the impact hammer automatically falls down to hurt the worker below, in addition, the abrasion of the hammer buckle and the unloading hook also causes inaccuracy of lifting height, the accuracy of the coarse aggregate impact test is influenced, and the impact hammer is very inconvenient.

Disclosure of Invention

The utility model aims to provide an impact toughness instrument for coarse aggregate impact test, which has ingenious structure, ensures the accuracy of the lifting height of a hammer head, can also ensure the stability and safety of the lifted hammer head before the hammer head is not beaten, and is efficient and practical.

The technical scheme for realizing the aim of the utility model is as follows: the utility model is provided with a base and a bottom plate fixed on the base, wherein a cylinder for placing coarse aggregate is fixedly arranged on the bottom plate; the top of bottom plate is equipped with the roof that sets up with the bottom plate is coaxial, roof and bottom plate pass through a plurality of vertical guide arm fixed connection, are equipped with vertical gliding first slider on each vertical guide arm, still fixed be equipped with hammering support between roof and the bottom plate, hammering support and each first slider fixed connection, hammering support's bottom is fixed to be equipped with the tup that can hammer coarse aggregate in the barrel, still be equipped with the control assembly that steerable tup whereabouts between roof and the hammering support, control assembly includes with each vertical guide arm sliding fit's locating support, fixes the installation piece on the locating support, fixes the electro-magnet of installation piece below and swivelling joint in installation piece top and the control lever that steerable locating support goes up and down, be equipped with screw portion on the control lever, be equipped with on the roof can carry out lifting adjustment with screw portion screw-thread fit's screw, the locating support carries out the altitude mixture control through the cooperation of control with the control lever, the electro-magnet is equipped with the first magnetic path that can be connected with the electro-magnet cooperation, and the electro-magnet carries out the altitude mixture control through the cooperation of control through losing electrode and first magnetic path whereabouts that the tup.

Further, the top of each first slider all is equipped with the second slider, locating support and each second slider fixed connection, be equipped with on the second slider can fix the regulation screw on the vertical guide arm that corresponds with the second slider, all dispose adjusting bolt in each regulation screw, the locating support passes through the cooperation of each adjusting bolt and adjusting screw and fixes on each vertical guide arm, still be equipped with a plurality of guide bars that can pass the roof on the locating support, and all be equipped with the scale that sets up along the extending direction of guide bar on each guide bar, be equipped with on the roof and correspond and can supply the through-hole that the guide bar passed with each guide bar, after each guide bar passes the through-hole that corresponds with roof sliding connection to fix on the roof after each second slider is fixed.

Further, a limiting guide block capable of lifting and limiting the second slider is arranged between the first slider and the second slider on the vertical guide rod, the limiting guide block is slidably arranged on the corresponding vertical guide rod, a limiting screw hole perpendicular to the extending direction of the vertical guide rod is formed in the limiting guide block, a locking bolt is arranged in the limiting screw hole, and the limiting guide block is fixed on the corresponding vertical guide rod through the matching of the locking bolt and the limiting screw hole.

Further, be equipped with the locating component that can carry out automatic positioning to the barrel on the above-mentioned bottom plate, locating component includes a plurality of locating pieces on the bottom plate along the axis circumference distribution of bottom plate, slide the location push rod of setting on the locating piece, and fix on each location push rod and can lean on the clamp plate of pressing to the barrel, all be equipped with spacing spout on each locating piece, the bottom of each location push rod is all fixed and is equipped with spacing slider, the cooperation sliding connection that location push rod passes through spacing slider and spacing spout is on the locating piece, still be equipped with the pressure spring in the spacing spout, the extending direction of pressure spring is the same with the extending direction of spacing spout, the both ends of pressure spring respectively with spacing spout and spacing slider fixed connection, lean on the clamp plate on each spacing push rod lean on pressing and automatic positioning to the barrel through the continuous application of pressure spring.

Further, the cylinder comprises a cylinder bottom and a cylinder body detachably fixed on the cylinder bottom, a plurality of positioning holes are distributed along the circumference of the axis of the cylinder body, a plurality of positioning shafts corresponding to the positioning holes are fixedly arranged at the bottom of the cylinder body, a plurality of first caulking grooves are fixedly arranged on the bottom surface of the cylinder body, magnets are arranged in the first caulking grooves, a plurality of second caulking grooves corresponding to the first caulking grooves are arranged on the cylinder bottom, second magnetic blocks corresponding to the magnets are fixedly arranged in the second caulking grooves, and the cylinder body is detachably fixed on the cylinder bottom through one-to-one matching of the positioning shafts and the positioning holes and matching of the magnets and the second magnetic blocks.

Further, the bottom of the hammering support is fixedly provided with a mounting cylinder which is coaxially arranged with the bottom plate, the hammer head is provided with a mounting rod which can penetrate into the mounting cylinder, the mounting cylinder is provided with a mounting hole which is arranged relatively, the axis of the mounting hole is perpendicular to the axis of the mounting cylinder, the mounting rod is provided with jacks which correspond to the mounting holes, the mounting holes are internally provided with positioning rods, the mounting rods on the hammer head penetrate through the mounting holes through the positioning rods and extend into the jacks to be fixed in the mounting cylinder, and the hammer head is fixedly arranged on the hammering support through the connection of the mounting rods and the mounting cylinder.

The utility model has the positive effects that: (1) According to the utility model, the control assembly is arranged between the top plate and the hammering support, the height of the positioning support is adjusted through the control rod, the heights of the mounting block and the electromagnet are further adjusted, the falling of the hammer head is controlled through the on-off of the electromagnet, the damage caused by abrasion between the hammer buckle and the disassembling hook in the prior art is effectively solved, the accuracy of the falling height is ensured through the height adjustment of the control rod, meanwhile, the first sliding block can ensure that the hammer head can accurately fall into the cylinder body in the falling process of the hammer head, the accuracy and the safety of an impact test are effectively ensured, and the hammer head is ingenious in structure, convenient and practical.

(2) According to the utility model, the second sliding block is arranged on the side edge of the positioning support to ensure the stability of the positioning support during height adjustment, the stable connection between the positioning support and the vertical guide rod is further enhanced by the cooperation of the adjusting bolt and the adjusting screw hole, the guide rod on the positioning support can provide lifting guide for the positioning support in the lifting process of the positioning support, in addition, the scale on the guide rod can enable an operator to clearly know the adjustment amount, the height accuracy in an impact test is further ensured, the accuracy of test data is further ensured, and the high-efficiency and practicability are realized.

(3) According to the utility model, the lifting height of the hammering support is limited by arranging the limiting guide blocks, so that the falling height of the hammer head is further limited, the hammering accuracy is ensured, and the hammer is convenient and practical.

(4) According to the utility model, the pressure springs are arranged to push the limit sliding blocks and the positioning push rods on the limit sliding blocks, so that each leaning pressing plate is ensured to firmly lean against the cylinder body, the stability of the cylinder body in the impact test is further ensured, and a foundation is further laid for the accuracy of the later-stage impact test.

(5) According to the utility model, the barrel body and the barrel bottom are detachably fixed by arranging the matching of the positioning hole and the positioning shaft and the matching of the second magnetic block and the magnet, so that the barrel body or the barrel bottom can be replaced in time when being damaged, and the accuracy of data of a later-stage impact test is further ensured.

(6) According to the utility model, the mounting cylinder is arranged at the bottom of the hammering bracket, the mounting rod is arranged on the hammer head, the mounting rod and the mounting cylinder are fixedly connected through the matching of the positioning rod and the mounting hole, so that the hammer head can be conveniently replaced in time after being used for multiple times, and the accuracy of data obtained by an impact test is further ensured, and the hammer head is convenient and practical.

Drawings

In order that the utility model may be more readily understood, a more particular description of the utility model will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings, in which

FIG. 1 is a front view showing the overall structure of an impact toughness tester for impact testing of coarse aggregates in the present utility model;

FIG. 2 is a cross-sectional view of a connection structure of a top plate and a positioning bracket according to the present utility model;

FIG. 3 is a cross-sectional view of a limit slider according to the present utility model;

FIG. 4 is a cross-sectional view showing the structure of the connection of the hammer head to the hammering holder according to the present utility model;

FIG. 5 is a cross-sectional view of the overall structure of the cartridge of the present utility model;

fig. 6 is a cross-sectional view of the overall structure of the positioning assembly of the present utility model.

Detailed Description

Referring to fig. 1 to 6, the utility model comprises a base and a bottom plate 1 fixed on the base, wherein a cylinder 2 for placing coarse aggregate is fixedly arranged on the bottom plate 1; the top of bottom plate 1 is equipped with the roof 3 with the coaxial setting of bottom plate 1, roof 3 and bottom plate 1 pass through a plurality of vertical guide arm 4 fixed connection, are equipped with vertical gliding first slider 51 on each vertical guide arm 4, still fixedly between roof 3 and the bottom plate 1 be equipped with hammering support 5, hammering support 5 and each first slider 51 fixed connection, hammering support 5's bottom is fixed to be equipped with the tup 7 that can hammer coarse aggregate in the barrel 2, still be equipped with the control assembly 6 that controllable tup 7 falls between roof 3 and hammering support 5, control assembly 6 includes with each vertical guide arm 4 sliding fit's locating support 61, the installation piece 62 of fixing on locating support 61, the electro-magnet 63 of fixing below installing piece 62 and rotate the control lever 64 of connecting in installation piece 62 top and controllable locating support 61 lift, be equipped with screw 641 on the control lever 64, the upper end of hammering support 5 is equipped with the first piece 52 that can cooperate with electro-magnet 63 and connect through the rotation of control lever 64 and carries out lift adjustment, the height of control rod 63 and the first magnet that can cooperate with the electro-magnet piece 63 through the height of control rod 64, and the height that can cooperate with the magnet piece 61 is adjusted through the control rod 61.

The top of each first slider 51 all is equipped with second slider 65, locating support 61 and each second slider 65 fixed connection, be equipped with the adjustment screw 651 that can fix second slider 65 on corresponding vertical guide arm 4 on the second slider 65, all dispose adjusting bolt 652 in each adjustment screw 651, locating support 61 passes through the cooperation of each adjusting bolt 652 and adjustment screw 651 and fixes on each vertical guide arm 4, still be equipped with a plurality of guide bars 66 that can pass roof 3 on the locating support 61, and all be equipped with the scale that sets up along the extending direction of guide bar 66 on each guide bar 66, be equipped with on the roof 3 with each guide bar 66 correspond and can supply the through-hole that guide bar 66 passed, each guide bar 66 pass behind the corresponding through-hole with roof 3 sliding connection to fix on roof 3 after each second slider 65 is fixed.

Any be equipped with between the first slider 51 on the vertical guide arm 4 and the second slider 65 can go on spacing guide block 8 of going up and down to the second slider 65, spacing guide block 8 slides and sets up on the vertical guide arm 4 that corresponds, be equipped with the spacing screw 82 that sets up perpendicularly with the extending direction of vertical guide arm 4 on the spacing guide block 8, the locking bolt 81 has been disposed in the spacing screw 82, spacing guide block 8 passes through the cooperation of locking bolt 81 and spacing screw 82 to be fixed on the vertical guide arm 4 that corresponds.

The automatic cylinder 2 positioning device is characterized in that the bottom plate 1 is provided with a positioning assembly 9 capable of automatically positioning the cylinder 2, the positioning assembly 9 comprises a plurality of positioning blocks 91 which are circumferentially distributed on the bottom plate 1 along the axis of the bottom plate 1, positioning push rods 94 which are slidably arranged on the positioning blocks 91, and pressing plates 95 which are fixed on the positioning push rods 94 and can press the cylinder 2, each positioning block 91 is provided with a limiting sliding groove 92, the bottom of each positioning push rod 94 is fixedly provided with a limiting sliding block 93, the positioning push rods 94 are slidably connected on the positioning blocks 91 through the matching of the limiting sliding blocks 93 and the limiting sliding grooves 92, the limiting sliding grooves 92 are internally provided with pressure springs 96, the extending directions of the pressure springs 96 are identical to the extending directions of the limiting sliding grooves 92, two ends of each pressure spring 96 are fixedly connected with the limiting sliding grooves 92 and the limiting sliding blocks 93, and the pressing plates 95 on each limiting push rod press the cylinder 2 through continuous force application of the pressure springs 96, and automatic positioning is realized.

The cylinder body 2 comprises a cylinder bottom 22 and a cylinder body 21 detachably fixed on the cylinder bottom 22, a plurality of positioning holes 223 are circumferentially distributed along the axis of the cylinder body 2 in a sleeved mode, a plurality of positioning shafts 213 corresponding to the positioning holes 223 are fixedly arranged at the bottom of the cylinder body 21, a plurality of first caulking grooves 211 are fixedly arranged on the bottom surface of the cylinder body 21, magnets 212 are arranged in the first caulking grooves 211, a plurality of second caulking grooves 221 corresponding to the first caulking grooves 211 are arranged on the cylinder bottom 22, second magnetic blocks 222 corresponding to the magnets 212 are fixedly arranged in the second caulking grooves 221, and the cylinder body 21 is detachably fixed on the cylinder bottom 22 through one-to-one matching of the positioning shafts 213 and the positioning holes 223 and matching of the magnets 212 and the second magnetic blocks 222.

The bottom of hammering support 5 is fixed and is equipped with the installation section of thick bamboo 53 that sets up with bottom plate 1 coaxial, is equipped with the installation pole 71 that can go deep into in the installation section of thick bamboo 53 on the tup 7, be equipped with the mounting hole 531 of relative setting on the installation section of thick bamboo 53, the axis of mounting hole 531 sets up perpendicularly with the axis of installation section of thick bamboo 53, be equipped with the jack 721 that corresponds with each mounting hole 531 on the installation pole 71, all dispose locating lever 72 in each mounting hole 531, the installation pole 71 on the tup 7 passes the mounting hole 531 through locating lever 72 and stretches into jack 721 and fix in installation section of thick bamboo 53, and the tup 7 is fixed on hammering support 5 through the connection of installation pole 71 and installation section of thick bamboo 53.

The working principle of the utility model is as follows: in the use process of the utility model, the cylinder body 21 is detachably fixed on the cylinder bottom 22 through the matching of the magnets 212 in the first caulking grooves 211 on the bottom surface and the second magnetic blocks 222 in the second caulking grooves 221 and the matching of the positioning shafts 213 and the positioning holes 223, when the cylinder body 2 is fixed on the bottom plate 1, each limiting push plate compresses the outer wall of the cylinder body 2 through the continuous force of the pressure springs 96 to the limiting slide blocks 93, thereby realizing the positioning of the cylinder body 2, ensuring the stability of the cylinder body 2, avoiding the shaking or displacement of the cylinder body 2 in the impact test process, influencing the later test result, then operating personnel can drive the positioning support 61 to lift through rotating the control rod 64, fix the positioning support 61 through each adjusting screw rod and the adjusting screw hole 651, then adjust the limiting guide block 8 to the required height, and fixed by a locking bolt 81, the electromagnet 63 is electrified after the fixation is completed, an operator lifts the vertical support to the first magnetic block 52 to attract the electromagnet 63 after the electromagnet 63 is electrified and magnetized, after the attraction is completed, the electromagnet 63 is controlled to lose electricity, after the electromagnet 63 loses electricity, the first magnetic block 52 starts to fall and performs impact test on coarse aggregate in the cylinder 2 under the guide of the first sliding block 51, after the hammer 7 is used for many times, the hammer 7 can be replaced by pulling out the positioning rod 72, the accuracy of hammering test data is further ensured, when the height adjustment is required in the error range, the adjusting bolt 652 is loosened, the positioning support 61 is lifted, the adjustment length is displayed by scales on each guide rod 66, and meanwhile, the height of the limiting guide block 8 is adjusted, so that the accurate adjustment is realized, after the adjustment is finished, the positioning bracket 61 is fixed through the matching of the adjusting bolt 652 and the adjusting screw hole 651, so that the damage caused by abrasion between the hammer buckle and the disassembling hook in the prior art is effectively solved, the safety of operators in the use process is ensured, in addition, the accuracy of test data in an impact test can be effectively ensured through the height adjustment of the positioning bracket 61 and the replacement of the portable hammer 7, and the device has the advantages of better adjustability and applicability, ingenious structure, high efficiency and practicability.

While the foregoing is directed to embodiments of the present utility model, other and further details of the utility model may be had by the present utility model, it should be understood that the foregoing description is merely illustrative of the present utility model and that no limitations are intended to the scope of the utility model, except insofar as modifications, equivalents, improvements or modifications are within the spirit and principles of the utility model.

Claims (6)

1. Impact toughness appearance for coarse aggregate impact test, its characterized in that: the device comprises a base and a bottom plate fixed on the base, wherein a cylinder for placing coarse aggregates is fixedly arranged on the bottom plate; the top of bottom plate is equipped with the roof that sets up with the bottom plate is coaxial, roof and bottom plate pass through a plurality of vertical guide arm fixed connection, are equipped with vertical gliding first slider on each vertical guide arm, still fixed be equipped with hammering support between roof and the bottom plate, hammering support and each first slider fixed connection, hammering support's bottom is fixed to be equipped with the tup that can hammer coarse aggregate in the barrel, still be equipped with the control assembly that steerable tup whereabouts between roof and the hammering support, control assembly includes with each vertical guide arm sliding fit's locating support, fixes the installation piece on the locating support, fixes the electro-magnet of installation piece below and swivelling joint in installation piece top and the control lever that steerable locating support goes up and down, be equipped with screw portion on the control lever, be equipped with on the roof can carry out lifting adjustment with screw portion screw-thread fit's screw, the locating support carries out the altitude mixture control through the cooperation of control with the control lever, the electro-magnet is equipped with the first magnetic path that can be connected with the electro-magnet cooperation, and the electro-magnet carries out the altitude mixture control through the cooperation of control through losing electrode and first magnetic path whereabouts that the tup.

2. The impact toughness tester for impact test of coarse aggregate according to claim 1, wherein: the top of each first slider all is equipped with the second slider, locating support and each second slider fixed connection, be equipped with the regulation screw that can fix the second slider on the vertical guide arm that corresponds on the second slider, all set up adjusting bolt in each regulation screw, the locating support passes through the cooperation of each adjusting bolt and adjusting screw and fixes on each vertical guide arm, still be equipped with a plurality of guide bars that can pass the roof on the locating support, and all be equipped with the scale that sets up along the extending direction of guide bar on each guide bar, be equipped with on the roof and correspond and can supply the through-hole that the guide bar passed with each guide bar, after each guide bar passes the through-hole that corresponds with roof sliding connection to fix on the roof after each second slider is fixed.

3. The impact toughness instrument for impact testing of coarse aggregate according to claim 2, wherein: any be equipped with the spacing guide block that can go up and down spacing to the second slider between first slider and the second slider on the vertical guide arm, spacing guide block slides and sets up on the vertical guide arm that corresponds, be equipped with the spacing screw that sets up perpendicularly with the extending direction of vertical guide arm on the spacing guide block, the lock bolt has been furnished with in the spacing screw, the spacing guide block passes through the lock bolt and fixes on the vertical guide arm that corresponds with the cooperation of spacing screw.

4. The impact toughness tester for impact test of coarse aggregate according to claim 3, wherein: the cylinder positioning device is characterized in that a positioning assembly capable of automatically positioning the cylinder is arranged on the bottom plate, the positioning assembly comprises a plurality of positioning blocks which are circumferentially distributed on the bottom plate along the axis of the bottom plate, positioning push rods which are arranged on the positioning blocks in a sliding manner, and pressing plates which are fixed on the positioning push rods and can press the cylinder, each positioning block is provided with a limiting sliding groove, the bottoms of the positioning push rods are fixedly provided with limiting sliding blocks, the positioning push rods are connected on the positioning blocks through the matching sliding of the limiting sliding blocks and the limiting sliding grooves, a pressure spring is further arranged in the limiting sliding grooves, the extending direction of the pressure spring is identical with the extending direction of the limiting sliding grooves, two ends of the pressure spring are fixedly connected with the limiting sliding grooves and the limiting sliding blocks respectively, and the pressing plates on the limiting push rods press the cylinder through continuous force application of the pressure spring and are automatically positioned.

5. The impact toughness tester for impact testing of coarse aggregate according to claim 4, wherein: the barrel comprises a barrel bottom and a barrel body detachably fixed on the barrel bottom, a plurality of locating holes are distributed on the barrel bottom along the circumference of the axis of the barrel body, a plurality of locating shafts corresponding to the locating holes are fixedly arranged at the bottom of the barrel body, a plurality of first caulking grooves are fixedly arranged on the bottom surface of the barrel body, magnets are arranged in the first caulking grooves, a plurality of second caulking grooves corresponding to the first caulking grooves are arranged on the barrel bottom, second magnetic blocks corresponding to the magnets are fixedly arranged in the second caulking grooves, and the barrel body is detachably fixed on the barrel bottom through one-to-one matching of the locating shafts and the locating holes and matching of the magnets and the second magnetic blocks.

6. The impact toughness tester for impact testing of coarse aggregate according to claim 5, wherein: the hammer is characterized in that an installation cylinder which is coaxially arranged with the bottom plate is fixedly arranged at the bottom of the hammering support, an installation rod which can penetrate into the installation cylinder is arranged on the hammer head, installation holes which are oppositely arranged are formed in the installation cylinder, the axis of each installation hole is perpendicular to the axis of the installation cylinder, insertion holes which correspond to the installation holes are formed in the installation rod, positioning rods are respectively arranged in the installation holes, the installation rod on the hammer head penetrates through the installation holes through the positioning rods and stretches into the insertion holes to be fixed in the installation cylinder, and the hammer head is fixedly arranged on the hammering support through the connection of the installation rods and the installation cylinder.