A rock sample crushing device for mine geological exploration

Abstract

The present invention belongs to the technical field of rock sample crushing, and discloses a rock sample crushing device for mine geological exploration, including three crushing boxes stacked and installed together, and the upper end of the crushing box is provided with a crushing mechanism for crushing rock samples. The present invention can ensure that the particle size value of the rock sample retained in each group of storage boxes is relatively average through the filter holes on the first supporting plate and the second supporting plate, thereby improving the sample uniformity of the retained rock sample, and through the three crushing boxes stacked and distributed from top to bottom, the length ratio of the first supporting plate to the second supporting plate is 5:1, 4:1 and 3:1 respectively, which can ensure that the weight of the retained rock samples in the storage box is the same, and the total weight of the retained rock samples in the three groups of storage boxes is half of the total weight of all rock samples, which meets the weight number of the retained rock samples, and can also obtain the retained rock samples of three particle size values.

Description

Technical Field

[0001] The invention belongs to the technical field of rock sample crushing, in particular to a rock sample crushing device for mine geological survey. Background Art

[0002] The working procedures of mineral sampling generally include: sample collection, sample processing, sample analysis, identification and testing. The sampling method varies with the exploration project. When core drilling, half of the core is sampled and the other half is retained.

[0003] In the prior art, for the retained samples, generally half of the rock sample is cut directly, or half of the processed sample is taken. The method of cutting half of the rock sample directly requires the retained rock sample to be reprocessed when conducting comparative tests; the method of taking half of the processed sample can only obtain a powdered sample, which has certain limitations and cannot specifically obtain rock samples of different particle sizes during the processing process. Therefore, improvements are made to the above problems. Summary of the invention

[0004] In order to solve the problem that the existing rock sample retention samples mentioned in the above background technology have limitations and cannot specifically obtain rock samples of different particle sizes during the processing process, the present invention provides a rock sample crushing device for mine geological exploration.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a rock sample crushing equipment for mine geological exploration, comprising three crushing boxes stacked and installed together, the upper end of the crushing box is provided with a crushing mechanism for crushing rock samples, and also includes a storage mechanism arranged inside the crushing box for receiving rock sample crushed materials, the storage mechanism includes a movable plate, a lifting assembly, a first supporting plate and a second supporting plate, the movable plate is slidably connected to the inside of the crushing box, the lifting assembly is arranged on the movable plate and can drive the movable plate to move up and down, the first supporting plate and the second supporting plate are both hinged to the movable plate, and the sum of the length of the first supporting plate and the width of the second supporting plate is equal to the length of the movable plate; a storage mechanism arranged on the side of the storage mechanism for receiving rock sample crushed materials A lifting mechanism for discharging rock sample crushed materials from a storage mechanism, the lifting mechanism comprising a reciprocating threaded rod, a baffle, a toothed plate, a connecting frame and an extrusion angle block, the two ends of the reciprocating threaded rod being rotatably connected to the inside of a crushing box through a connecting block, the baffle being connected to the surface of the reciprocating threaded rod, the toothed plate being mounted on both sides of the baffle, the connecting frame being mounted on the bottom of the baffle, the extrusion angle block being mounted on the connecting frame, the reciprocating threaded rod being transmission-connected to the central axis of a crushing roller through a bevel gear; a guide plate being arranged inside the crushing box to block the falling rock sample crushed materials; a storage box being arranged on one side of the crushing box to collect retained rock samples; and a collection box being arranged at the bottom of the lowest crushing box to collect crushed test rock samples.

[0006] Preferably, the crushing mechanism includes a driving motor, a transmission assembly and two crushing rollers. The driving motor is fixedly installed on the side of the crushing box. The driving motor drives the crushing rollers through a first gear installed on the output shaft and a second gear installed on the synchronous pulley in the transmission assembly, and the two crushing rollers rotate in opposite directions.

[0007] Preferably, filter holes are provided on the surfaces of the first supporting plate and the second supporting plate for allowing powdered debris to pass through, and the first supporting plate and the second supporting plate can be flipped upward with the hinge with the movable plate as the center.

[0008] Preferably, the lifting assembly includes a rotating assembly, a connecting roller and a blocking ring. The connecting roller is rotatably connected to the crushing box. The surface of the connecting roller is provided with a protrusion which can drive the movable plate to move upward when rotating. The surface of the movable plate is provided with a connecting hole for the connecting roller to rotate. One end of the blocking ring is fixedly connected to the connecting roller, and the other end is installed on the edge of the connecting hole on the surface of the movable plate. The connecting roller is made of rubber, and the rotating assembly is meshed with the tooth plate.

[0009] Preferably, the rotating assembly comprises a positioning ring, a protruding tooth and a spring sheet, the positioning ring is fixedly connected to the connecting roller, the protruding tooth is hinged to the positioning ring, the two ends of the spring sheet are respectively connected to the positioning ring and the protruding tooth, and the protruding tooth can only rotate in one direction.

[0010] Preferably, the vertical cross-sectional shape of the extrusion corner block is an isosceles triangle, the vertex angle of the extrusion corner block points to the contact point between the first support plate and the second support plate, and when the extrusion corner block is driven upward by the connecting frame and the baffle plate, it can squeeze the first support plate and the second support plate to flip upward.

[0011] Preferably, when the first supporting plate and the second supporting plate are in a horizontal state, the opposite sides of the first supporting plate and the second supporting plate are in contact with the baffle.

[0012] Preferably, in the three crushing boxes stacked from top to bottom, the length ratios of the first supporting plate to the second supporting plate are 5:1, 4:1 and 3:1 respectively, and the retained rock sample weight in each storage box is the same.

[0013] Preferably, the distance between the two crushing rollers in the three groups of crushing mechanisms decreases from top to bottom.

[0014] Preferably, brackets are installed at the four bottom corners of the crushing box at the lowest end, and the collecting box is installed at the bottom of the crushing box at the lowest end through a limiting plate.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The present invention can ensure that the particle size value of the retained rock samples in each group of storage boxes is uniform through the filter holes on the first supporting plate and the second supporting plate, thereby improving the sample uniformity of the retained rock samples, and through the three crushing boxes stacked and distributed from top to bottom, the length ratios of the first supporting plate and the second supporting plate are 5:1, 4:1 and 3:1 respectively, which can ensure that the weight of the retained rock samples in the storage boxes is the same. The total weight of the retained rock samples in the three groups of storage boxes is half of the total weight of all rock samples, which meets the number of weights of the retained rock samples, and retained rock samples of three particle size values ​​can also be obtained.

[0017] 2. The present invention can crush rock samples through the crushing mechanism, and the rock sample fragments can fall onto the first supporting plate and the second supporting plate. Some relatively fine powdery fragments can directly fall through the filter holes on the surface of the first supporting plate and the second supporting plate. The baffle is driven to move up by the reciprocating threaded rod, and the tooth plate is used to drive the lifting assembly to rotate, so that the movable plate, the first supporting plate and the second supporting plate can move up and down inside the crushing box, thereby forming a shaking motion, which promotes the movement of the fragments on the first supporting plate and the second supporting plate, and can also promote the falling of the fragments and the uniformity of the fragments on the top of the first supporting plate and the second supporting plate.

[0018] 3. The present invention forms a ratchet structure through the cooperation of a positioning ring, a protruding tooth, a spring sheet and a tooth plate. When the baffle moves up, it can drive the lifting assembly to rotate, so that the connecting roller can intermittently drive the movable plate, the first supporting plate and the second supporting plate to move up and down. When the baffle moves down, the rotating assembly rotates in the opposite direction. Due to the dead weight of the movable plate, the first supporting plate, the second supporting plate and the crushed materials, the protruding tooth is flipped when driven by the tooth plate, so that the connecting roller will not rotate, thereby ensuring the stability during material storage. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the present invention;

[0020] Figure 2 It is a structural cross-sectional view of the crushing box of the present invention;

[0021] Figure 3 It is a structural subdivision diagram of the crushing mechanism of the present invention;

[0022] Figure 4 It is a structural breakdown diagram of the lifting mechanism of the present invention;

[0023] Figure 5 It is a structural breakdown diagram of the storage mechanism of the present invention;

[0024] Figure 6 is a cross-sectional view of the first supporting plate and the second supporting plate of the present invention;

[0025] Figure 7 It is a structural breakdown diagram of the rotating assembly of the present invention;

[0026] Figure 8 Schematic diagram of the positional relationship of the collection box of the present invention.

[0027] In the figure: 1. crushing box; 2. crushing mechanism; 201. driving motor; 202. transmission assembly; 203. crushing roller; 3. storage mechanism; 301. movable plate; 302. lifting assembly; 3021. rotating assembly; 30211. positioning ring; 30212. protruding teeth; 30213. spring sheet; 3022. connecting roller; 3023. blocking ring; 303. first supporting plate; 304. second supporting plate; 4. lifting mechanism; 401. reciprocating threaded rod; 402. baffle; 403. tooth plate; 404. connecting frame; 405. extrusion angle block; 5. guide plate; 6. storage box; 7. collection box. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] like Figures 1 to 8 As shown, the present invention provides a rock sample crushing equipment for mine geological exploration, including three crushing boxes 1 stacked and installed together, the upper end of the crushing box 1 is provided with a crushing mechanism 2 for crushing rock samples, and also includes a storage mechanism 3 arranged inside the crushing box 1 for receiving rock sample crushed materials, the storage mechanism 3 includes a movable plate 301, a pulling component 302, a first supporting plate 303 and a second supporting plate 304, the movable plate 301 is slidably connected to the inside of the crushing box 1, the pulling component 302 is arranged on the movable plate 301 and can drive the movable plate 301 to move up and down, the first supporting plate 303 and the second supporting plate 304 are both hinged to the movable plate 301, and the sum of the length of the first supporting plate 303 and the width of the second supporting plate 304 is equal to the length of the movable plate 301; a support plate 303 is arranged on the side of the storage mechanism 3 for discharging the inside of the storage mechanism 3 The lifting mechanism 4 for rock sample crushed material comprises a reciprocating threaded rod 401, a baffle 402, a tooth plate 403, a connecting frame 404 and an extrusion angle block 405. Both ends of the reciprocating threaded rod 401 are rotatably connected to the inside of the crushing box 1 through the connecting blocks. The baffle 402 is connected to the surface of the reciprocating threaded rod 401, the tooth plate 403 is installed on both sides of the baffle 402, the connecting frame 404 is installed on the bottom of the baffle 402, the extrusion angle block 405 is installed on the connecting frame 404, and the reciprocating threaded rod 401 is connected to the central axis of the crushing roller 203 through a bevel gear; a guide plate 5 is arranged inside the crushing box 1 to block the falling rock sample crushed material; a storage box 6 is arranged on one side of the crushing box 1 to collect the retained rock samples; and a collection box 7 is arranged at the bottom of the lowest end of the crushing box 1 to collect the crushed test rock samples.

[0030] The crushing mechanism 2 is provided to crush the rock sample, and the rock sample fragments can fall onto the top of the first supporting plate 303 and the second supporting plate 304. Some relatively fine powdery debris can directly fall through the filter holes on the surfaces of the first supporting plate 303 and the second supporting plate 304. The baffle plate 402 is driven upward by the reciprocating threaded rod 401, and the lifting assembly 302 is driven to rotate through the tooth plate 403, so that the movable plate 301, the first supporting plate 303 and the second supporting plate 304 can move up and down inside the crushing box 1, thereby forming a shaking motion, which promotes the first The movement of the crushed materials on the top of the supporting plate 303 and the second supporting plate 304 can also promote the falling of the crushed slag and the uniformity of the crushed materials on the top of the first supporting plate 303 and the second supporting plate 304. When the baffle 402 is separated from the contact with the first supporting plate 303 and the second supporting plate 304, the crushed materials can fall through the gap between the first supporting plate 303 and the second supporting plate 304 and the baffle 402. Most of the crushed materials fall into the next group of crushing rollers 203 after being limited by the guide plate 5 and are further crushed. A small amount of crushed materials fall into the storage box 6 and are collected as preserved rock samples.

[0031] like Figure 2 , 3 As shown, the crushing mechanism 2 includes a driving motor 201, a transmission assembly 202 and two crushing rollers 203. The driving motor 201 is fixedly installed on the side of the crushing box 1. The driving motor 201 drives the crushing roller 203 through a first gear installed on the output shaft and a second gear installed on the synchronous pulley in the transmission assembly 202, and the two crushing rollers 203 rotate in opposite directions; the spacing between the two crushing rollers 203 in the three groups of crushing mechanisms 2 decreases from top to bottom.

[0032] The two crushing rollers 203 are driven by the transmission assembly 202 to rotate synchronously in opposite directions to ensure the crushing effect on the rock sample. Three groups of crushing mechanisms 2 are provided to crush the rock sample step by step to reduce the difficulty of crushing.

[0033] like Figure 2 , 6 As shown, the surfaces of the first supporting plate 303 and the second supporting plate 304 are provided with filter holes that allow powdered debris to pass through, and the first supporting plate 303 and the second supporting plate 304 can be flipped upward with the hinge with the movable plate 301 as the center of the circle; in the three crushing boxes 1 stacked from top to bottom, the length ratios of the first supporting plate 303 and the second supporting plate 304 are 5:1, 4:1 and 3:1 respectively, and the retained rock sample weight in each storage box 6 is the same.

[0034] The filter holes can ensure that the particle size values ​​of the retained rock samples in each group of storage boxes 6 are relatively average, thereby improving the sample uniformity of the retained rock samples, and through the length ratio of the three groups of first support plates 303 and second support plates 304, it can ensure that the weight of the retained rock samples in the storage boxes 6 is the same. The total weight of the retained rock samples in the three groups of storage boxes 6 is one half of the total weight of all rock samples, which meets the weight number of the retained rock samples.

[0035] like Figure 5 As shown, the lifting assembly 302 includes a rotating assembly 3021, a connecting roller 3022 and a blocking ring 3023. The connecting roller 3022 is rotatably connected to the crushing box 1. The surface of the connecting roller 3022 is provided with a protrusion that can drive the movable plate 301 to move upward when rotating. The surface of the movable plate 301 is provided with a connecting hole for the connecting roller 3022 to rotate. One end of the blocking ring 3023 is fixedly connected to the connecting roller 3022, and the other end is installed on the edge of the connecting hole on the surface of the movable plate 301. The connecting roller 3022 is made of rubber, and the rotating assembly 3021 is meshed with the tooth plate 403.

[0036] The protrusions installed on the surface of the connecting roller 3022 form a cam structure when rotating, which drives the movable plate 301 to move upward. After the movable plate 301 moves up to the maximum value, it falls down due to its own weight and the weight of the crushed materials on the first supporting plate 303 and the second supporting plate 304. The crushed materials on the first supporting plate 303 and the second supporting plate 304 are driven to shake by the up and down movement of the movable plate 301, the first supporting plate 303 and the second supporting plate 304, thereby promoting the movement of the crushed materials on the top of the first supporting plate 303 and the second supporting plate 304, thereby improving the falling effect of the crushed materials and the uniformity of the crushed materials on the top of the first supporting plate 303 and the second supporting plate 304. The blocking ring 3023 is set to block the connecting hole on the movable plate 301, thereby preventing the crushed materials from entering and ensuring the collection effect of the crushed materials.

[0037] like Figure 7 As shown, the rotating assembly 3021 includes a positioning ring 30211, a protruding tooth 30212 and a spring sheet 30213. The positioning ring 30211 is fixedly connected to the connecting roller 3022. The protruding tooth 30212 is hinged to the positioning ring 30211. The two ends of the spring sheet 30213 are respectively connected to the positioning ring 30211 and the protruding tooth 30212. The protruding tooth 30212 can only rotate in one direction.

[0038] The positioning ring 30211, the protruding tooth 30212, the spring sheet 30213 and the tooth plate 403 cooperate to form a ratchet structure. When the baffle 402 moves up, it can drive the lifting assembly 302 to rotate, so that the connecting roller 3022 can intermittently drive the movable plate 301, the first supporting plate 303 and the second supporting plate 304 to move up and down. When the baffle 402 moves down, the rotating assembly 3021 rotates in the opposite direction. Due to the weight of the movable plate 301, the first supporting plate 303, the second supporting plate 304 and the crushed materials, the protruding tooth 30212 is turned over when driven by the tooth plate 403, so that the connecting roller 3022 will not rotate, thereby ensuring stability during material storage.

[0039] like Figure 6 As shown, the vertical cross-section of the extrusion corner block 405 is an isosceles triangle, and the vertex of the extrusion corner block 405 points to the contact point between the first supporting plate 303 and the second supporting plate 304. When the extrusion corner block 405 is driven to move upward by the connecting frame 404 and the baffle 402, it can squeeze the first supporting plate 303 and the second supporting plate 304 to flip upward; when the first supporting plate 303 and the second supporting plate 304 are in a horizontal state, the opposite sides of the first supporting plate 303 and the second supporting plate 304 are in contact with the baffle 402.

[0040] The extrusion angle block 405 can be moved upward synchronously through the drive of the connecting frame 404 when the baffle plate 402 moves upward, so that the first supporting plate 303 and the second supporting plate 304 can be squeezed, and then the first supporting plate 303 and the second supporting plate 304 are driven to flip upward at the hinge with the movable plate 301, promoting the falling of the crushed materials on the surface of the first supporting plate 303 and the second supporting plate 304. When the crushed materials on the surface of the second supporting plate 304 fall, they can enter the storage box 6 and be collected as a retained rock sample.

[0041] like Figure 1 , 2 As shown, brackets are installed at the four bottom corners of the crushing box 1 at the lowest end, and the collecting box 7 is installed at the bottom of the crushing box 1 at the lowest end through a limiting plate.

[0042] The working principle and use process of the present invention:

[0043] When in use, the driving motor 201 is started, and the two crushing rollers 203 are driven to rotate synchronously in the opposite direction through the transmission component 202 to crush the input rock sample. The crushed rock sample falls on the surface of the first supporting plate 303 and the second supporting plate 304. The finer powdery debris in the rock sample fragments can directly fall through the filter holes on the surface of the first supporting plate 303 and the second supporting plate 304. While the crushing rollers 203 are crushing the rock sample, the reciprocating threaded rod 401 rotates to drive the baffle plate 402 to move upward, thereby driving the lifting component 302 to rotate through the tooth plate 403. The lifting component 302 composed of the positioning ring 30211, the protruding teeth 30212, and the spring sheet 30213 cooperates with the tooth plate 403 to form a ratchet ratchet structure, which can drive the lifting component 302 to rotate when the baffle plate 402 moves upward. The assembly 302 rotates, so that the connecting roller 3022 can intermittently drive the movable plate 301, the first supporting plate 303 and the second supporting plate 304 to move up and down, and when the baffle 402 moves down, the rotating assembly 3021 rotates in the opposite direction. Due to the dead weight of the movable plate 301, the first supporting plate 303, the second supporting plate 304 and the crushed materials, the protruding teeth 30212 are turned over when driven by the tooth plate 403, so that the connecting roller 3022 will not rotate. In this way, the movable plate 301, the first supporting plate 303 and the second supporting plate 304 can be moved up and down inside the crushing box 1, thereby forming a shaking, which promotes the movement of the crushed materials on the top of the first supporting plate 303 and the second supporting plate 304, and can also promote the falling of the crushed slag and the uniformity of the crushed materials on the top of the first supporting plate 303 and the second supporting plate 304.

[0044] Synchronously, when the baffle 402 moves up, the rotating assembly 3021 rotates in the opposite direction. Due to the deadweight of the movable plate 301, the first supporting plate 303, the second supporting plate 304 and the crushed materials, the protruding teeth 30212 are turned over when driven by the tooth plate 403, so that the connecting roller 3022 will not rotate, thereby ensuring the stability during material storage. When the baffle 402 is out of contact with the first supporting plate 303 and the second supporting plate 304, the crushed materials can fall through the gap between the first supporting plate 303 and the second supporting plate 304 and the baffle 402. Most of the crushed materials fall into the next group of crushing rollers 203 after passing through the limit of the guide plate 5 and are further crushed. A small part of the crushed materials fall into the storage box 6 and are collected as preserved rock samples.

[0045] The rock sample passes through three crushing boxes 1 from top to bottom in sequence and is crushed by the crushing rollers 203 correspondingly arranged therein. Finally, it is crushed into the particle size state to be detected and enters the collection box 7, while the three storage boxes 6 respectively collect the retained rock samples of three particle size values.

[0046] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0047] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A rock sample crushing device for mine geological exploration, comprising three crushing boxes (1) stacked together, each crushing box (1) having a crushing mechanism (2) for crushing rock samples disposed at the upper end thereof, characterized in that: Also includes, A storage mechanism (3) is arranged inside the crushing box (1) for receiving crushed rock samples, the storage mechanism (3) comprising a movable plate (301), a lifting assembly (302), a first supporting plate (303) and a second supporting plate (304), the movable plate (301) is slidably connected to the inside of the crushing box (1), the lifting assembly (302) is arranged on the movable plate (301) and can drive the movable plate (301) to move up and down, the first supporting plate (303) and the second supporting plate (304) are both hinged to the movable plate (301), and the sum of the length of the first supporting plate (303) and the width of the second supporting plate (304) is equal to the length of the movable plate (301); a lifting mechanism (4) disposed on the side of the storage mechanism (3) for discharging the crushed rock sample material inside the storage mechanism (3); the lifting mechanism (4) comprising a reciprocating threaded rod (401), a baffle (402), a tooth plate (403), a connecting frame (404) and an extrusion angle block (405); the two ends of the reciprocating threaded rod (401) are rotatably connected to the inside of the crushing box (1) via the connecting block; the baffle (402) is connected to the surface of the reciprocating threaded rod (401); the tooth plate (403) is mounted on both sides of the baffle (402); the connecting frame (404) is mounted on the bottom of the baffle (402); the extrusion angle block (405) is mounted on the connecting frame (404); and the reciprocating threaded rod (401) is transmission-connected to the central axis of the crushing roller (203) via a bevel gear; A guide plate (5) disposed inside the crushing box (1) to block falling rock sample crushed materials; A storage box (6) disposed on one side of the crushing box (1) for collecting rock samples to be retained; A collecting box (7) disposed at the bottom of the lowermost crushing box (1) for collecting the crushed rock samples to be tested; The surfaces of the first supporting plate (303) and the second supporting plate (304) are provided with filter holes capable of allowing powdery debris to pass through, and the first supporting plate (303) and the second supporting plate (304) can be turned upward with the hinged portion with the movable plate (301) as the center of the circle; The lifting assembly (302) comprises a rotating assembly (3021), a connecting roller (3022) and a blocking ring (3023); the connecting roller (3022) is rotatably connected to the crushing box (1); a protrusion is installed on the surface of the connecting roller (3022) which can drive the movable plate (301) to move upward when rotating; a connecting hole for the connecting roller (3022) to rotate is opened on the surface of the movable plate (301); one end of the blocking ring (3023) is fixedly connected to the connecting roller (3022), and the other end is installed on the edge of the connecting hole on the surface of the movable plate (301); the connecting roller (3022) is made of rubber; and the rotating assembly (3021) is meshed with the tooth plate (403); The rotating assembly (3021) comprises a positioning ring (30211), a protruding tooth (30212) and a spring sheet (30213); the positioning ring (30211) is fixedly connected to the connecting roller (3022); the protruding tooth (30212) is hinged to the positioning ring (30211); two ends of the spring sheet (30213) are respectively connected to the positioning ring (30211) and the protruding tooth (30212); and the protruding tooth (30212) rotates in one direction.

2. The rock sample crushing equipment for mine geological exploration according to claim 1 is characterized in that: The crushing mechanism (2) comprises a driving motor (201), a transmission assembly (202) and two crushing rollers (203); the driving motor (201) is fixedly mounted on a side of the crushing box (1); the driving motor (201) drives the crushing rollers (203) through the cooperation of a first gear mounted on an output shaft and a second gear mounted on a synchronous pulley in the transmission assembly (202); and the two crushing rollers (203) rotate in opposite directions.

3. The rock sample crushing equipment for mine geological exploration according to claim 1 is characterized in that: The vertical cross-section of the extrusion corner block (405) is an isosceles triangle, the top angle of the extrusion corner block (405) points to the contact point between the first supporting plate (303) and the second supporting plate (304), and when the extrusion corner block (405) is driven upward by the connecting frame (404) and the baffle plate (402), it can squeeze the first supporting plate (303) and the second supporting plate (304) to flip upward.

4. The rock sample crushing equipment for mine geological exploration according to claim 1 is characterized in that: When the first supporting plate (303) and the second supporting plate (304) are in a horizontal state, the opposite sides of the first supporting plate (303) and the second supporting plate (304) are in contact with the baffle (402).

5. The rock sample crushing equipment for mine geological exploration according to claim 1 is characterized in that: In the three crushing boxes (1) stacked from top to bottom, the length ratios of the first supporting plate (303) and the second supporting plate (304) are 5:1, 4:1 and 3:1 respectively, and the retained rock sample weight in each storage box (6) is the same.

6. The rock sample crushing equipment for mine geological exploration according to claim 2 is characterized in that: The distance between the two crushing rollers (203) in the three groups of crushing mechanisms (2) decreases from top to bottom.

7. The rock sample crushing equipment for mine geological exploration according to claim 1 is characterized in that: Brackets are also installed at the four corners of the bottom of the crushing box (1) at the lowest end, and the collecting box (7) is installed at the bottom of the crushing box (1) at the lowest end via a limiting plate.

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