CN212008096U

CN212008096U - Stone compressive strength detection device

Info

Publication number: CN212008096U
Application number: CN202020562671.8U
Authority: CN
Inventors: 吴友红; 纪慧枝; 吕芳芳
Original assignee: Anhui Oriental Calcium Co ltd
Current assignee: Anhui Oriental Calcium Co ltd
Priority date: 2020-04-14
Filing date: 2020-04-14
Publication date: 2020-11-24
Anticipated expiration: 2030-04-14

Abstract

The utility model relates to the technical field of ore compressive strength detection, in particular to a stone compressive strength detection device, which comprises a base, a bracket, a lower pressing plate arranged on the top surface of the base and an upper pressing plate fixed on the bracket, wherein the top wall of the lower pressing plate is provided with two first lead screws, and the top surface of the upper pressing plate is fixed with a nut in threaded connection with the first lead screws; the top surface of the upper pressure plate is provided with a nail measuring hole and a measuring nail penetrates through the nail measuring hole, the top end of the support is fixed with a cross beam, the upper pressure plate and the cross beam are connected through two guide pillars, the two guide pillars are sleeved with a heavy hammer which is opposite to the measuring nail, and the heavy hammer is connected with a pull rope; the top surface of the lower pressing plate is relatively provided with a pushing mechanism which comprises a rotating seat arranged on the lower pressing plate, the rotating seat is rotatably connected with a second lead screw, two opposite ends of the two lead screws are respectively in threaded connection with a moving rod, the lower pressing plate is provided with an anti-rotating seat penetrating through the moving rod, one end of the second lead screw is fixed with a twisting block, and the moving rod is provided with a clamping part. The utility model discloses have and stabilize centre gripping test object in the testing process, improve the effect that detects the precision.

Description

Stone compressive strength detection device

Technical Field

The utility model belongs to the technical field of the technique that ore compressive strength detected and specifically relates to a stone compressive strength detection device is related to.

Background

In the process of mining, stones with calcium carbonate components are generally used for producing stones, the stones are generally applied to building materials, however, the stones with different compressive strengths are not mixed for use, and the compressive strength detection and classification are required.

Chinese patent with publication number CN209485892U discloses a rock compressive strength measuring device, which comprises a base, three adjusting support legs which are distributed in a triangular shape are fixed below the base, a lower pressing plate is arranged on the upper surface of the base, a support is arranged above the base, the bottom end of the support penetrates through the lower pressing plate and is fixed with the base, an upper pressing plate is fixedly arranged at the middle-lower section of the support at the position right above the lower pressing plate, a cross beam is fixed at the top end position of the inner side of the support, a vertical sliding rail is fixed at the front side of the support, a graduated scale is connected at the inner side of the vertical sliding rail in a sliding manner, a fastening bolt which has a limiting effect on the graduated scale is rotatably connected to the side wall of the vertical sliding rail, a level bubble is installed at the middle section position of the front surface of the cross beam, an auxiliary depth measuring scale is hung at the position of one side of the level bubble on the front surface of the cross beam, two vertically upward thin, the upper surface of top board is provided with the nut to the position department that corresponds the thin lead screw, link to each other through two guide pillars between the upper surface of top board and the lower surface of crossbeam, and the upper surface of top board is located central point and puts the department and has seted up and survey the nail hole, the upper surface of top board is located one side position department of surveying the nail hole and installs the second slide rail, and the upper surface of top board is located the opposite side position department of surveying the nail hole and installs first slide rail, the inside of surveying the nail hole is run through and is provided with the survey nail, the inside sliding connection of second slide rail has the second slider, the inside sliding connection of first slide rail has first slider, the top of surveying the nail is provided with the cushion, the outside of two guide pillars has cup jointed, the upper surface of weight is located central point and is fixed with the stay cord, the.

The above prior art solutions have the following drawbacks: after an operator places stones on the lower pressing plate, the filament rod is rotated to lift the lower pressing plate, so that the stones are clamped between the upper pressing plate and the lower pressing plate, the heavy hammer is pulled to hammer the measuring nail, when the measuring nail chisels the stones, the stones are difficult to be completely positioned by simply relying on the upper pressing plate and the lower pressing plate, the stones are easy to shift left and right in the testing process, and the detection result is caused to generate large errors.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims at providing a stone compressive strength detection device has the stable centre gripping test object in the testing process, improves the effect that detects the precision.

The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:

a compression strength detection device for stones comprises a base, a support fixed on the base, a lower pressing plate arranged on the top wall of the base and an upper pressing plate fixed on the support and positioned above the lower pressing plate, wherein the top wall of the lower pressing plate is in threaded connection with two first screw rods;

the center of the top surface of the upper pressure plate is provided with a nail measuring hole and a measuring nail penetrates through the nail measuring hole, two sides of the upper pressure plate, which are positioned in the nail measuring hole, are respectively provided with a sliding block for clamping the measuring nail, the top end of the support is fixed with a cross beam, the top wall of the upper pressure plate is connected with the bottom wall of the cross beam through two guide posts, the two guide posts are sleeved with a heavy hammer, the bottom surface of the heavy hammer is opposite to the top surface of the measuring nail, and the top wall of the heavy hammer is connected with a pull rope penetrating out;

lower clamp plate top surface is provided with relatively towards lower clamp plate top surface central point and supports pushing mechanism, support pushing mechanism is including setting up the rotation seat at the lower clamp plate upper surface, it is connected with lead screw two to rotate the seat, two the lead screw is threaded connection respectively for two opposite ends has the non-circular shape carriage release lever of cross section, the lower clamp plate upper surface is provided with the restriction the carriage release lever pivoted prevents the transposition seat, the one end that the carriage release lever was kept away from to lead screw two is fixed with twists reverse the piece, just it laminates to twist reverse the piece the lateral wall of rotation seat, the carriage release lever is kept away from the one end of lead screw two is provided with clamping component.

Through adopting above-mentioned technical scheme, operating personnel arranges the stone in lower clamp plate top surface center, then rotate two piece of turning round simultaneously and rotate in order to drive lead screw two, prevent changeing the seat restriction carriage release pivoted while lead screw two promote the carriage release lever towards the stone, finally the stone is pressed from both sides tight location by two clamping parts, operating personnel rotates two lead screw one this moment and lifts the lower clamp plate, thereby make the stone paste and put the position that is located the survey nail hole at the upper clamp plate diapire, the pulling stay cord is drawn the weight to the guide pillar top and is loosened, the weight hammering survey nail, make the survey nail strike the stone, carry out nail hole depth detection after taking off the stone and survey stone compressive strength, clamping part and lead screw two, carriage release lever stabilize centre gripping stone in the detection process, reduce the survey nail and strike the stone and take place the sideslip, improve and detect the precision.

The present invention may be further configured in a preferred embodiment as: the clamping part comprises a top pressure plate fixedly connected with the end wall of the moving rod and a clamping plate connected with the end wall of the moving rod, the top pressure plate is far away from the clamping plate of the side wall of the moving rod, a dovetail groove I is formed in the side wall of the moving rod along the vertical direction, and the clamping plate is fixedly connected with a dovetail block I of the dovetail groove in a clamping mode.

Through adopting above-mentioned technical scheme, when using the grip block, pass through dovetail one of dovetail piece joint roof pressure board with the grip block, the installation is very simple and convenient, simultaneously according to the stone of different shape sizes, operating personnel can carry out the change of grip block type, improves the flexibility of coping different stone centre gripping demands.

The present invention may be further configured in a preferred embodiment as: two the grip block sets up to elastic rubber, and two the opposite face of grip block sets up to the arc.

Through adopting above-mentioned technical scheme, the grip block centre gripping stone in-process of elastic rubber material has good frictional force, and when two grip blocks were held the stone relatively, the fine appearance of adaptation stone of arc clamping surface of grip block further improved the effect that the grip block centre gripping stone.

The present invention may be further configured in a preferred embodiment as: the rotating seat and the anti-rotation seat are fixed into a whole through a mounting plate, and the mounting plate is fixedly connected with the lower pressing plate through bolts.

Through adopting above-mentioned technical scheme, rotate the seat and prevent changeing the seat and by the fixed an organic whole of mounting panel and through the bolt installation, make things convenient for operating personnel to carry out whole dismantlement installation, be favorable to avoiding rotating the seat and preventing to change the seat and focus when dismantling the back installation once more respectively and rotate a seat rotation axis and prevent the central axis difficulty of transposition.

The present invention may be further configured in a preferred embodiment as: and a plurality of bolt holes for bolting the mounting plate are uniformly formed in the top surface of the lower pressing plate from two opposite back side edges of the lower pressing plate to the axis of the second screw rod towards the center of the lower pressing plate.

Through adopting above-mentioned technical scheme, when the size of operating personnel sample stone is too big or the undersize, when simply can't adapt to the stone size through rotating two lead screws, the mounting panel is dismantled to the operating personnel accessible, and then installs the mounting panel on the holding down plate suitable bolt hole position once more, and then the bolt mounting panel realizes rotating the seat and preventing changeing the seat bulk movement, further improves the not unidimensional stone's of centre gripping adaptability.

The present invention may be further configured in a preferred embodiment as: the center of the top surface of the lower pressing plate is provided with a plurality of first chip falling holes, the base is provided with a plurality of second chip falling holes which are in butt joint with the first chip falling holes, and the bottom wall of the base is located at the second chip falling holes and is connected with a chip collecting box.

Through adopting above-mentioned technical scheme, when operating personnel pulling stay cord drop weight hammering survey nail, survey nail chisel hit the stone and produce the stone bits and fall to a collection bits box by falling bits hole one and falling bits hole two, be favorable to reducing the piling up of stone bits on the holding down plate, in time carry out automatic collection to the stone bits.

The present invention may be further configured in a preferred embodiment as: and the bottom wall of the base is positioned on two sides of the chip falling hole II and is respectively provided with a dovetail groove II, and a dovetail block II which is connected with the dovetail groove II in a sliding manner is fixed on the chip collecting box.

Through adopting above-mentioned technical scheme, operating personnel can slide the collection bits box through dovetail piece two and install on the diapire of base, when needing the clearance collection bits box, takes out collection bits box along dovetail two and can clear up, improves the convenience of collection bits box installation use and clearance.

The present invention may be further configured in a preferred embodiment as: the bottom wall of the cross beam between the two guide pillars is fixedly provided with an elastic oil storage box, the elastic oil storage box is connected with a pair of lubricating sleeves which are respectively sleeved on the outer cylindrical surfaces of the guide pillars, and the side walls of the lubricating sleeves facing the outer cylindrical surfaces of the guide pillars are provided with a plurality of oil outlets.

Through adopting above-mentioned technical scheme, in operating personnel advanced in with the leading-in elasticity oil storage box of lubricating oil, when the pulling stay cord was drawn the weight to the guide pillar top, the weight extrusion elasticity oil storage box made the inside lubricating oil of elasticity oil storage box derive to the lubrication cover in, lubricating oil is extruded to the cylinder of guide pillar on by a plurality of oil outlets on the lubrication cover, and then scribble the lubrication along the cylinder of guide pillar along with the weight whereabouts process, be favorable to in time carrying out necessary lubrication to the guide pillar, reduce the frictional resistance that the weight whereabouts received, improve the precision that the nail was surveyed in the weight hammering.

To sum up, the utility model discloses a following at least one useful technological effect:

1. an operator places the stones on the lower pressing plate and rotates the two twisting blocks, the pair of twisting blocks drive the pair of screw rods II to push the pair of moving rods and the clamping part and clamp the stones oppositely, the screw rods I are rotated to lift the lower pressing plate and enable the stones to be attached to the positions of the measuring nail holes in the bottom wall of the upper pressing plate, the measuring nails are hammered to detect the compressive strength of the stones, the clamping part, the screw rods II and the moving rods stably clamp the stones in the detection process, the stones are prevented from laterally moving in the process that the measuring nails impact the stones, and the detection accuracy is improved;

2. an operator can disassemble the mounting plate and install the mounting plate at a proper bolt hole position on the lower pressing plate again to realize the integral movement of the rotating seat and the anti-rotating seat, so that the adaptability of the clamping plate for clamping stones with different sizes is further improved;

3. when an operator pulls the heavy hammer to the top of the guide pillar, the heavy hammer extrudes the elastic oil storage box and extrudes lubricating oil to the cylindrical surface of the guide pillar through the plurality of oil outlets, the lubricating oil is smeared along the cylindrical surface of the guide pillar along with the falling process of the heavy hammer, necessary lubrication is favorably carried out on the guide pillar in time, the friction resistance received when the heavy hammer falls is reduced, and the precision of the hammer hammering nail is improved.

Drawings

Fig. 1 is a schematic structural diagram of the whole detection device for detecting the compressive strength of stones in this embodiment.

Fig. 2 is a cross-sectional view of the connecting structure of the pushing mechanism, the first chip falling hole, the second chip falling hole, the chip collecting box and the base in this embodiment.

Fig. 3 is an enlarged view of a portion a in fig. 1, and shows the structure of the bolt hole, the bolt, the mounting plate, the knock plate, and the retainer plate.

Fig. 4 is a schematic structural diagram of the elastic oil storage box, the lubricating sleeve and the oil outlet thereof in the embodiment.

In the figure, 1, a base; 11. a support; 12. a cross beam; 13. a guide post; 14. a support leg; 15. a vertical slide rail; 16. a graduated scale; 17. a weight; 171. pulling a rope; 18. a second chip falling hole; 19. a second dovetail groove; 2. an upper pressure plate; 21. measuring a nail hole; 22. a guide rail; 23. a slider; 24. measuring a nail; 3. a lower pressing plate; 31. bolt holes; 32. a chip falling hole I; 33. a first screw rod; 34. a nut; 4. a pushing mechanism; 41. a rotating seat; 42. a second screw rod; 43. a travel bar; 431. a threaded hole; 44. preventing the rotation of the base; 441. a square hole; 45. a twisting block; 46. a top pressing plate; 461. a first dovetail groove; 47. a clamping plate; 471. a dovetail block I; 48. mounting a plate; 49. a bolt; 5. a scrap collecting box; 51. a dovetail block II; 52. a handle; 6. an elastic oil storage box; 61. a lubricating sleeve; 611. an oil outlet hole; 62. a stringing hole; 7. a level bubble; 8. a depth micrometer.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1, a rock compressive strength detecting device disclosed by the present invention comprises a base 1, three support legs 14 arranged in a triangle are fixed on the bottom surface of the base 1, a lower pressing plate 3 is arranged on the top surface of the base 1, a pair of brackets 11 oppositely arranged and penetrating through the lower pressing plate 3 are fixed on the top surface of the base 1, an upper pressing plate 2 is fixedly penetrated and connected on the middle lower portion of the pair of brackets 11 and positioned right above the lower pressing plate 3, a pair of first lead screws 33 are connected between the upper pressing plate 2 and the lower pressing plate 3 in a threaded manner, nuts 34 connected with the first lead screws 33 in a threaded manner are fixed on the top wall of the upper pressing plate 2, a measuring nail 24 hole 21 is arranged on the center position of the top surface of the upper pressing plate 2 and a measuring nail 24 is penetrated and arranged, guide rails 22 are oppositely arranged on both sides of the measuring nail 24 hole 21 of the upper pressing plate 2, a slide block 23 for clamping the measuring, the top wall of the upper pressure plate 2 and the bottom wall of the cross beam 12 are fixedly connected with a pair of guide posts 13, the guide posts 13 are respectively positioned at two sides of a hole 21 of a measuring nail 24, the guide posts 13 are sleeved with a heavy hammer 17, the bottom surface of the heavy hammer 17 is opposite to the top surface of the measuring nail 24, the top wall of the heavy hammer 17 is connected with a pull rope 171 penetrating out of the top surface of the cross beam 12, a depth micrometer 8 is hung on the cross beam 12, a vertical slide rail 15 is fixed on the front side surface of a bracket 11 at one side along the vertical direction, a graduated scale 16 is arranged in the vertical slide rail; an operator places the base 1 through the supporting legs 14, whether the stone is placed horizontally or not can be observed through the air level 7, after the stone is placed on the lower pressing plate 3, the pair of first screw rods 33 is rotated to lift the lower pressing plate 3 until the stone abuts against the upper pressing plate 2, the stone is right opposite to the measuring nail 24 hole 21 at the moment, the heavy hammer 17 is lifted to the highest point and the pull rope 171 is loosened by pulling the pull rope 171, the heavy hammer 17 hammers the measuring nail 24, the measuring nail 24 punches the stone at the same time, the depth of the stone punching hole is measured through the depth micrometer 8 to measure the compressive strength of the stone, and the graduated scale 16 is used for measuring the falling height of the heavy hammer.

Referring to fig. 1 and 2, the top surface of the lower press plate 3 is oppositely provided with a pushing mechanism 4 facing the center of the top surface of the lower press plate 3, the pushing mechanism 4 comprises a rotating seat 41 and an anti-rotating seat 44, the bottom surface of the rotating seat 41 and the anti-rotating seat 44 are fixed into a whole through a mounting plate 48, the mounting plate 48 is fixedly connected with the lower press plate 3 through a bolt 49, the rotating seat 41 is rotatably connected with a second screw rod 42, a moving rod 43 with a non-circular cross section is penetrated in the anti-rotating seat 44, the cross section of the moving rod 43 can, pentagonal and the like, the embodiment is preferably square, at this time, the anti-rotation seat 44 is provided with a square hole 441 through which the moving rod 43 passes, the end surface of the moving rod 43 facing the second screw rod 42 is provided with a threaded hole 431 in threaded connection with the second screw rod 42, one end of the second screw rod 42 far away from the moving rod 43 is flush with the side wall of the rotation seat 41 far away from the anti-rotation seat 44 and is fixed with a torsion block 45, and one end of the moving rod 43 far away from the second screw rod 42 is provided with a clamping part; an operator places stones in the center of the top surface of the lower pressing plate 3, simultaneously rotates the two twisting blocks 45 to drive the second screw rods 42 to rotate, the square holes 441 of the anti-rotation bases 44 limit the rotation of the moving rods 43, so that the second screw rods 42 push the moving rods 43 towards the stones, the clamping parts on the two moving rods 43 finally clamp and position the stones relatively, the clamping parts, the second screw rods 42 and the moving rods 43 stably clamp the stones in the detection process, the phenomenon that the stones are laterally moved in the process of impacting the stones by the measuring nails 24 is reduced, the detection accuracy is improved, the rotating bases 41 and the anti-rotation bases 44 are fixed into a whole by the mounting plate 48 and are mounted through the bolts 49, the operator can conveniently carry out integral disassembly and mounting, and difficulty in the rotating axes of the rotating bases 41 and the central axes of the anti-rotation bases 44 when the rotating bases 41 and the anti-rotation bases.

Referring to fig. 2 and 3, the clamping component includes a top pressing plate 46 fixedly connected with the end wall of the moving rod 43 far away from the second screw rod 42, a clamping plate 47 is detachably mounted on the side wall of the top pressing plate 46 far away from the moving rod 43, the clamping plate 47 is made of elastic rubber materials, the clamping surface of the clamping plate 47 is arc-shaped, a dovetail groove 461 is formed in the side wall of the top pressing plate 46 far away from the moving rod 43 along the vertical direction, and a dovetail block 471 clamped with the dovetail groove is fixed on the clamping plate 47; the grip block 47 centre gripping stone in-process of elastic rubber material has good frictional force, when two relative centre gripping stones of grip block 47, the appearance of the fine adaptation stone of arc clamping surface of grip block 47, further improve the effect of grip block 47 centre gripping stone, when using grip block 47, with grip block 47 through dovetail 461 of a dovetail 471 joint roof pressure board 46, the installation is very simple and convenient, simultaneously according to the stone of different shape size, operating personnel can carry out the change of grip block 47 types, improve the flexibility of answering different stone centre gripping demands.

Referring to fig. 1 and 3, a plurality of pairs of bolt holes 31 for bolting a mounting plate 48 are uniformly formed in the top surface of the lower press plate 3 from the side edge of the lower press plate 3 to the center of the lower press plate 3 along the axes of two oppositely arranged screw rods 42; when the size of the operation personnel sample the stone too big or undersize, the condition that simply can't adapt to the stone size through rotating the second 42 of lead screw can appear, and the mounting panel 48 is dismantled to the operation personnel accessible, and then installs the mounting panel 48 in the suitable bolt hole 31 position on holding down plate 3 once more, and then bolted mounting panel 48 realizes rotating seat 41 and prevents changeing seat 44 bulk movement, further improves the adaptability of the not unidimensional stone of centre gripping.

Referring to fig. 2, a plurality of first chip falling holes 32 are formed in the center of the top surface of the lower pressing plate 3, a plurality of second chip falling holes 18 which are opposite to the first chip falling holes 32 are formed in the base 1, a pair of dovetail grooves 19 are formed in the bottom wall of the base 1 in parallel on two sides of the second chip falling holes 18, a chip collecting box 5 is arranged on the bottom wall of the base 1, a dovetail block second 51 which is connected with the dovetail grooves second 19 in a sliding mode is fixed on the top surface of the chip collecting box 5, and a handle 52 is fixed on the side face, facing the notch of the dovetail grooves second 19; operating personnel will collect bits box 5 and slide through two 51 swallow tail pieces in advance and install on the diapire of base 1, when operating personnel pulling stay cord 171 drops weight 17 hammering and surveys nail 24, survey nail 24 chisel hits the stone and produces the stone bits and fall to collecting bits box 5 by falling bits hole 32 and falling bits hole two 18 in, be favorable to reducing the pile up of stone bits on holding down plate 3, in time carry out automatic collection to the stone bits, after collecting bits box 5 collects the stone bits of a period, will take out collection bits box 5 through handle 52 along two 19 swallow tail grooves and take out and clear up, improve the convenience of collecting bits box 5 installation use and clearance.

Referring to fig. 2 and 4, an elastic oil storage box 6 is fixed on the bottom wall of the cross beam 12 between the two guide posts 13, the cross section of the elastic oil storage box 6 is circular, a rope threading hole 62 for a pull rope 171 to pass through is formed in the position of the center of circle, two sides of the elastic oil storage box 6 facing the guide posts 13 are respectively communicated with a C-shaped lubricating sleeve 61, the two lubricating sleeves 61 are respectively sleeved on the outer cylindrical surfaces of the guide posts 13, and the side wall of the lubricating sleeve 61 facing the outer cylindrical surfaces of the guide posts 13 is provided with a plurality of oil outlet; an operator guides the lubricating oil into the elastic oil storage box 6 from an inlet (not shown in the figure) of the elastic oil storage box 6 in advance, when the pull rope 171 is pulled to pull the weight 17 to the top of the guide post 13, the weight 17 presses the elastic oil storage box 6 to guide the lubricating oil in the elastic oil storage box 6 into the lubricating sleeve 61, the lubricating oil is extruded to the cylindrical surface of the guide post 13 from the oil outlet holes 611 and is coated and lubricated along the cylindrical surface of the guide post 13 along with the falling process of the weight 17, so that the necessary lubrication on the guide post 13 can be timely performed, the frictional resistance on the falling of the weight 17 is reduced, and the precision of hammering the measuring nail 24 by the weight 17.

The implementation principle of the embodiment is as follows: an operator places the stone on the lower pressing plate 3, according to the overall dimension of the stone, an appropriate clamping plate 47 is selected, the position of the bolt lower pressing plate 3 of the mounting plate 48 is adjusted to adapt to the dimension of the stone, after the mounting plate 48 is fixed, the pair of twisting blocks 45 are rotated to push the moving rod 43 to enable the clamping plate 47 to clamp the stone, at the moment, the pair of screw rods 33 are rotated to lift the lower pressing plate 3 until the stone abuts against the upper pressing plate 2, the pull rope 171 is pulled to the preset height of the scale 16, the pull rope 171 is loosened to enable the heavy hammer 17 to fall freely and hammer the measuring nail 24, after the measuring nail 24 chisels the stone, the stone is taken down, the chiseling depth of the stone can be measured through the depth micrometer 8, and the compressive strength of the stone can be.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. A compression strength detection device for stones comprises a base (1), a support (11) fixed on the base (1), a lower pressing plate (3) arranged on the top wall of the base (1) and an upper pressing plate (2) fixed on the support (11) and located above the lower pressing plate (3), wherein the top wall of the lower pressing plate (3) is in threaded connection with two first screw rods (33), and a nut (34) in threaded connection with the first screw rods (33) is fixed on the top wall of the upper pressing plate (2);

a nail measuring hole (21) is formed in the center of the top surface of the upper pressing plate (2) and a measuring nail (24) penetrates through the nail measuring hole, sliding blocks (23) for clamping the measuring nail (24) are respectively arranged on two sides of the nail measuring hole (21) of the upper pressing plate (2), a cross beam (12) is fixed to the top end of the support (11), the top wall of the upper pressing plate (2) is connected with the bottom wall of the cross beam (12) through two guide posts (13), a heavy hammer (17) is sleeved on the two guide posts (13), the bottom surface of the heavy hammer (17) is opposite to the top surface of the measuring nail (24), and the top wall of the heavy hammer (17) is connected with a pull rope (171) penetrating out of the top surface of the cross beam;

the method is characterized in that: the top surface of the lower pressing plate (3) faces towards the center of the top surface of the lower pressing plate (3) and is relatively provided with a pushing mechanism (4), the pushing mechanism (4) comprises a rotating seat (41) arranged on the upper surface of the lower pressing plate (3), the rotating seat (41) is rotatably connected with a second screw rod (42), the opposite ends of the second screw rod (42) are respectively in threaded connection with a moving rod (43) with a non-circular cross section, the upper surface of the lower pressing plate (3) is provided with a limit anti-rotation seat (44) for rotating the moving rod (43), one end, away from the moving rod (43), of the second screw rod (42) is fixed with a torsion block (45), the torsion block (45) is attached to the side wall of the rotating seat (41), and one end, away from the second screw rod (42), of the moving rod (43) is provided with a.

2. The compressive strength detection device for stones according to claim 1, characterized in that: the clamping part comprises a top pressure plate (46) fixedly connected with the end wall of the moving rod (43) and a clamping plate (47) connected with the side wall of the moving rod (43) and far away from the top pressure plate (46), a dovetail groove I (461) is formed in the vertical direction of the side wall of the moving rod (43) and far away from the top pressure plate (46), and the clamping plate (47) is fixedly connected with a dovetail block I (471) of the dovetail groove in a clamping mode.

3. The compressive strength detection device for stones according to claim 2, characterized in that: two grip blocks (47) set up to elastic rubber, and two the opposite face of grip block (47) sets up to the arc.

4. The compressive strength detection device for stones according to claim 1, characterized in that: the rotating seat (41) and the rotation preventing seat (44) are fixed into a whole through a mounting plate (48), and the mounting plate (48) is fixedly connected with the lower pressure plate (3) through a bolt (49).

5. The compressive strength detection device for stones according to claim 4, characterized in that: and a plurality of bolt holes (31) for bolting the mounting plate (48) are uniformly formed in the top surface of the lower pressing plate (3) from the two back side edges of the lower pressing plate (3) to the center of the lower pressing plate (3) in the direction of the axis of the second screw rod (42).

6. The compressive strength detection device for stones according to claim 1, characterized in that: a plurality of first chip falling holes (32) are formed in the center of the top surface of the lower pressing plate (3), a plurality of second chip falling holes (18) which are in butt joint with the first chip falling holes (32) are formed in the base (1), and a chip collecting box (5) is connected to the position, located on the second chip falling holes (18), of the bottom wall of the base (1).

7. The compressive strength detection device for stones according to claim 6, characterized in that: and the bottom wall of the base (1) is positioned at two sides of the chip falling hole II (18) and is respectively provided with a dovetail groove II (19), and a dovetail block II (51) which is connected with the dovetail groove II (19) in a sliding manner is fixed on the chip collecting box (5).

8. The apparatus for testing compressive strength of pebbles according to any one of claims 1 to 7, wherein: an elastic oil storage box (6) is fixed on the bottom wall of the cross beam (12) between the two guide pillars (13), the elastic oil storage box (6) is connected with a pair of lubricating sleeves (61) which are respectively sleeved on the outer cylindrical surfaces of the guide pillars (13), and a plurality of oil outlet holes (611) are formed in the side walls, facing the outer cylindrical surfaces of the guide pillars (13), of the lubricating sleeves (61).