Sampling equipment for mine beneficiation

Abstract

The utility model relates to the technical field of solid sampling, in particular to sampling equipment for mine beneficiation, which comprises a mechanical arm and a sampling mechanism, the sampling mechanism comprises a mounting frame and two sampling clamping jaws, the mounting frame is mounted at the operating end of the mechanical arm, and the two sampling clamping jaws are mounted on the mounting frame. The two sampling clamping jaws are hinged to the mounting frame through two hinge supporting arms, first gears are fixedly mounted on the hinge supporting arm located at the deepest position of the mounting frame, the two first gears are meshed with each other, and a driving mechanism used for controlling the mounting frame to rotate is arranged on the side, close to one first gear, of the mounting frame; by arranging the mechanical arm, the sampling mechanism and the self-adaptive attaching assembly, the self-adaptive attaching assembly and the sampling clamping jaw can adapt to various ore shapes such as a curved surface, an inclined surface and a plane, automatic self-locking and falling prevention are achieved after contact, ore crushing is avoided through multi-point flexible clamping, the clamping jaw opening and closing response is fast, gear transmission synchronism is high, and the service life is long. And the sampling rhythm efficiency is further improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to solid sampling technical field, especially a sampling equipment for mine beneficiation. BACKGROUND

[0002] Mine beneficiation sampling is the core equipment of quality control, grade analysis and process optimization in beneficiation process, and its role is to collect representative samples from the mineral material flow to provide accurate data support for ore grade detection, beneficiation efficiency evaluation and product quality determination.

[0003] In the Chinese patent No. CN223122555U discloses a kind of for mine beneficiation full-automatic sampling equipment, the full-automatic sampling equipment for mine beneficiation, by clamping motor and transmission mechanism control double-section screw rod rotation, since the two threads on double-section screw rod are opposite, at this time two sampling claws are close to each other, part of ore is clamped, after sampling assembly resets under the joint action of telescopic assembly, guide assembly, complete a sampling;In the above document related equipment and similar field equipment use, it is found that the existing equipment clamps through rigid sampling claw, only can adapt to relatively unified ore, when facing irregular special-shaped, curved surface or large ore with different particle size, it is easy to appear clamping slip or unable to effectively adhere to the problem, and when clamping, stress concentrates in local contact point, easy to clamp fragile ore or cause ore edge corner to fall off, destroy the granularity composition and grade representativeness of sample, affect the accuracy of subsequent detection results. UTILITY MODEL CONTENT

[0004] The utility model aims at overcoming the shortcomings of prior art, solving the problems mentioned in the background art, and providing a kind of sampling equipment for mine beneficiation.

[0005] The utility model discloses a kind of sampling equipment for mine beneficiation, including mechanical arm and sampling mechanism, the sampling mechanism includes mounting bracket and two sampling clamps, the mounting bracket is installed in the operation end of the mechanical arm, two the sampling clamps are all hinged with the mounting bracket by two articulated arms, the articulated arm in the deepest place of the mounting bracket is fixedly installed with first gear, two the first gear is engaged, the side of the mounting bracket close to one of the first gear is equipped with the drive mechanism for controlling its rotation;The opposite side of two the sampling clamps is equipped with self-adapting assembly for adapting the shape of multiple ores, the self-adapting assembly includes mounting seat fixedly installed on the sampling clamp, multiple telescopic self-locking assemblies are fixedly installed in the inside of the mounting seat.

[0006] Preferably, the telescopic self-locking assembly comprises an inner sleeve threadedly connected with the mounting base, an outer sleeve movably connected with the outer surface of the inner sleeve, a sleeve cover fixedly installed at the end of the outer sleeve away from the inner sleeve, a spring arranged between the inner side of the sleeve cover and the plane inside the inner sleeve, a plurality of clamping pieces equidistantly fixedly arranged on the inner wall of the outer sleeve, and a flexible layer fixedly arranged on the outer surface of the inner sleeve, wherein the clamping pieces are in contact with the flexible layer.

[0007] Preferably, the clamping pieces are annular in shape, and a protrusion is arranged on the side of the clamping pieces facing the flexible layer, and a plurality of clamping teeth are fixedly arranged on the outer surface of the protrusion.

[0008] Preferably, the protrusion is triangular in cross-sectional shape, and the clamping teeth are triangular in cross-sectional shape.

[0009] Preferably, the outer surface of the end of the inner sleeve away from the outer sleeve is provided with threads, and a threaded hole compatible with the threads of the outer surface of the inner sleeve is arranged on the mounting base.

[0010] Preferably, the sleeve cover is threadedly connected with the outer sleeve, and the outer surface of the sleeve cover is provided with a rubber layer.

[0011] Preferably, the driving mechanism comprises a second gear meshing with one of the first gears, a driving piece is fixedly installed on the mounting frame corresponding to the position of the second gear, and the output end of the driving piece is connected with the second gear.

[0012] The sampling device for mine beneficiation has the beneficial effects that: through the mechanical arm, the sampling mechanism and the self-adaptive fitting assembly, the self-adaptive fitting assembly and the sampling clamping jaw can be adapted to various ore shapes such as curved surfaces, inclined surfaces and planes, automatically self-locked and prevented from falling off after contact, and multiple-point flexible clamping is avoided to protect the integrity of the sample, the clamping jaw opening and closing response is fast, the gear transmission synchronization is high, and the sampling beat efficiency can be further improved. BRIEF DESCRIPTION OF DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0014] Figure 1 It is a schematic diagram of the overall structure of the present application;

[0015] Figure 2 It is a schematic diagram of the structure of the mechanical arm of the present application;

[0016] Figure 3 Figure 1 is a structural schematic diagram of a driving mechanism of the utility model;

[0017] Figure 4 Figure 2 is a structural schematic diagram of a first working state of a telescopic self-locking assembly of the utility model;

[0018] Figure 5 Figure 3 is a structural schematic diagram of a second working state of the telescopic self-locking assembly of the utility model;

[0019] Figure 6 Figure 4 is a structural schematic diagram of a mounting seat of the utility model;

[0020] Figure 7 Figure 5 is a structural schematic diagram of a telescopic self-locking assembly of the utility model;

[0021] Figure 8 Figure 6 is a structural schematic diagram of a telescopic self-locking assembly of the utility model; Figure 7 Figure 7 is an enlarged schematic diagram of structure at A in Figure 6.

[0022] In the figure: 1, mechanical arm; 2, mounting frame; 3, sampling gripper; 4, articulated support arm; 5, first gear; 6, driving mechanism; 601, second gear; 602, driving piece; 7, mounting seat; 8, telescopic self-locking assembly; 801, inner sleeve; 802, outer sleeve; 803, cylinder cover; 804, spring; 805, occlusion piece; 8051, protruding block; 8052, occlusion tooth; 806, flexible layer. DETAILED DESCRIPTION

[0023] In the description of the utility model, it needs to be explained that, unless there is explicit provision and limitation, the terms "mounting", "connecting", "connection" should be understood broadly, for example, can be fixed connection, can also be detachable connection, or integrally connected; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through intermediate medium, can be the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood through specific circumstances.

[0024] The additional aspects and advantages of the utility model will be further given in the following description combined with the drawings, and part will become obvious from the following description, or be understood through the practice of the utility model.

[0025] As Figures 1 to 8As shown, a sampling device for mine beneficiation, comprising a mechanical arm 1 and a sampling mechanism, the sampling mechanism comprising a mounting frame 2 and two sampling clamps 3, the mounting frame 2 is mounted on the working end of the mechanical arm 1, the two sampling clamps 3 are hinged to the mounting frame 2 through two hinged arms 4, the hinged arm 4 located at the deepest part of the mounting frame 2 is fixedly installed with a first gear 5, the two first gears 5 are engaged, and the side of the mounting frame 2 close to one of the first gears 5 is provided with a driving mechanism 6 for controlling the rotation thereof; the opposite side of the two sampling clamps 3 is provided with a self-adaptive fitting assembly for adapting to various shapes of ores, the self-adaptive fitting assembly comprises a mounting seat 7 fixedly installed on the sampling clamp 3, and a plurality of telescopic self-locking assemblies 8 are fixedly installed inside the mounting seat 7.

[0026] As shown in Figures 1 to 3 , the driving mechanism 6 comprises a second gear 601 engaged with one of the first gears 5, and a driving member 602 fixedly installed at the position corresponding to the second gear 601 of the mounting frame 2, the output end of the driving member 602 is connected with the second gear 601, the rotation of the second gear 601 is controlled through the driving member 602, then the second gear 601 drives one of the first gears 5 to rotate, at this time, the engagement of the two first gears 5 can make the two first gears 5 control the two sampling clamps 3 to approach or move away from each other through the hinged arms 4; the transmission mode of the driving mechanism 6 and the engaged first gears 5 replaces the long transmission chain design of the existing clamping motor, transmission mechanism and double-section screw rod, the transmission chain of gear engagement is shorter, the power transmission loss is smaller, and the response speed of the opening and closing action of the sampling clamps 3 is faster, which can effectively shorten the opening and closing time of single sampling; at the same time, the transmission structure of the two engaged gears can ensure that the two sampling clamps 3 open and close synchronously, avoiding the unilateral lag problem of the clamps caused by thread wear and transmission gap of the existing double-section screw rod, and further improving the sampling beat efficiency.

[0027] As shown in Figures 3 to 8 , the telescopic self-locking assembly 8 comprises an inner sleeve 801 threadedly connected with the mounting seat 7, an outer sleeve 802 movably connected with the outer surface of the inner sleeve 801, a sleeve cover 803 fixedly installed at the end of the outer sleeve 802 away from the inner sleeve 801, a spring 804 arranged between the inner side of the sleeve cover 803 and the plane inside the inner sleeve 801, a plurality of clamping pieces 805 fixedly arranged at the inner wall of the outer sleeve 802 at equal intervals, a flexible layer 806 fixedly arranged on the outer surface of the inner sleeve 801, and the clamping pieces 805 are in close contact with the flexible layer 806; the outer surface of the end of the inner sleeve 801 away from the outer sleeve 802 is provided with a thread, and the mounting seat 7 is provided with a threaded hole matched with the thread of the outer surface of the inner sleeve 801, as shown in Figure 6 and Figure 7As shown, the inner sleeve 801 is convenient to disassemble and assemble by the cooperation between the threads on the outer surface of the inner sleeve 801 and the threaded holes on the mounting base 7, so that the telescopic self-locking assembly 8 can be assembled with the mounting base 7 and replaced individually; as shown Figure 7 As shown, the barrel cover 803 is threadedly connected with the outer sleeve 802, and the outer surface of the barrel cover 803 is provided with a rubber layer. The barrel cover 803 can be removed to replace the spring 804, so that the spring 804 can be replaced in time to ensure the stability of the telescopic self-locking assembly 8. The rubber layer on the outer surface of the barrel cover 803 can prevent the barrel cover 803 from scratching the ore and improve the friction between the barrel cover 803 and the ore to ensure the stability of clamping.

[0028] As shown Figure 7 and Figure 8 As shown, the occlusion member 805 is annular, and the side of the occlusion member 805 facing the flexible layer 806 is provided with a protrusion 8051. The outer surface of the protrusion 8051 is fixedly provided with a plurality of occlusion teeth 8052. The protrusion 8051 is triangular in cross-section, and the occlusion teeth 8052 are also triangular in cross-section. When the barrel cover 803 is stressed, the barrel cover 803 will cause the outer sleeve 802 to move independently, so that the outer sleeve 802 is eccentric to the inner sleeve 801. Once the outer sleeve 802 is eccentric, the protrusion 8051 and the plurality of occlusion teeth 8052 of the occlusion member 805 will occlude the flexible layer 806. When the barrel cover 803 is stressed to a certain extent, the occlusion teeth 8052 will be in close occlusion with the flexible layer 806, so that the outer sleeve 802 will not shrink any more.

[0029] The working process is as follows:

[0030] S1: When sampling, the sampling mechanism is moved towards the direction of the conveying belt by the mechanical arm 1, and then the second gear 601 is controlled to rotate by the driving member 602, and then one of the first gears 5 is driven to rotate by the second gear 601. At this time, the two first gears 5 are engaged, so that the two first gears 5 control the two sampling clamping jaws 3 to move close to or away from each other for clamping work by the hinged supporting arm 4;

[0031] S2: when the barrel cover 803 contacts the ore, the outer sleeve 802 and the inner sleeve 801 are eccentric under the guidance of the inclined surface or arc surface of the ore by using the set telescopic self-locking assembly 8, once the eccentricity is generated, the engagement piece 805 is engaged with the flexible layer 806, so that the outer sleeve 802 no longer slides to the inner sleeve 801 (that is, the outer sleeve 802 no longer shrinks), thereby allowing the plurality of outer sleeves 802 to be automatically locked after being attached to the ore (after reaching a certain force), improving the sampling stability, if the barrel cover 803 contacts a plane, the characteristics of the sampling mechanism itself can be used, the two sampling clamping jaws 3 extend forward when they approach, thereby allowing the outer sleeve 802 to be eccentric with the inner sleeve 801 by using the friction between the barrel cover 803 and the ore, and the outer sleeve 802 can still be locked after reaching a certain force;

[0032] S3: as described above, the self-adaptive attachment assembly and the telescopic self-locking assembly 8 can realize multi-scene adaptation, first, the plurality of telescopic self-locking assemblies 8 act independently, the outer sleeve 802 can freely adjust the posture according to the shape of the ore surface, and can form multi-point attachment regardless of curved surface, inclined surface or irregular surface; second, for planar ore, the forward extension characteristics of the closed sampling clamping jaws 3 can increase the contact pressure, guide the eccentric self-locking of the outer sleeve 802, solve the pain point that the rigid clamping jaws cannot firmly clamp the planar ore, without replacing special clamping jaws, most ore types in the beneficiation operation can be covered, and the equipment replacement cost and operation preparation time are reduced;

[0033] S4: after the outer sleeve 802 contacts the ore, if the ore surface shape is eccentric, the engagement piece 805 is engaged and locked with the flexible layer 806, so that the outer sleeve 802 cannot be retracted, a stable clamping force is formed, even if the mechanical arm 1 slightly shakes or vibrates, the ore can also be prevented from falling off, and the sampling success rate is greatly improved;

[0034] S5: the plurality of telescopic self-locking assemblies 8 are in a dispersed clamping mode, the barrel cover 803 of each outer sleeve 802 is in flexible contact with the ore, and the stress is uniformly dispersed to multiple contact points, the local pressure is reduced, the ore can be prevented from being crushed, the loss of ore composition caused by excessive clamping force can be prevented, the integrity and representativeness of the sampling sample are ensured, and the accuracy requirement of sample detection in the beneficiation process is met.

[0035] The basic principle, main features and advantages of the present application are shown and described. It should be understood by those skilled in the art that the present application is not limited by the above embodiments, the above embodiments and descriptions in the specification are only to illustrate the principle of the present application, without departing from the spirit and scope of the present application, the present application can have various changes and improvements, and these changes and improvements all fall within the scope of the present application.

Claims

1. A sampling device for use in mine beneficiation, characterised in that: The utility model provides a kind of sampling mechanism of mechanical arm, including mechanical arm (1) and sampling mechanism, the sampling mechanism includes mounting bracket (2) and two sampling grippers (3), the mounting bracket (2) is installed in the working end of the mechanical arm (1), two the sampling grippers (3) are hinged with the mounting bracket (2) by two articulated arms (4), the articulated arm (4) is fixedly installed with first gear (5) on the deepest place of the mounting bracket (2), two the first gear (5) is engaged, the mounting bracket (2) is close to the side of one of the first gear (5) is equipped with the driving mechanism (6) for controlling its rotation; Two the sampling grippers (3) opposite side are each equipped with self-adapting assembly for adapting to the shape of various ores, the self-adapting assembly includes mounting seat (7) fixedly installed on the sampling gripper (3), multiple telescopic self-locking components (8) are fixedly installed in the inside of the mounting seat (7).

2. A sampling device for use in mine beneficiation according to claim 1, characterised in that: The telescopic self-locking component (8) includes inner sleeve (801) that is connected with the mounting seat (7) screw, the outer surface of the inner sleeve (801) movably connected with outer sleeve (802), the outer sleeve (802) is fixedly installed with cylinder cover (803) away from the inner sleeve (801) one end, the inside of the cylinder cover (803) and the inner sleeve (801) inside plane between spring (804) is equipped, the inner wall of the outer sleeve (802) is fixedly equipped with multiple occlusal pieces (805), the outer surface of the inner sleeve (801) is fixedly equipped with flexible layer (806), and the occlusal piece (805) is pasted with the flexible layer (806).

3. A sampling device for use in mine beneficiation according to claim 2, characterised in that: The shape of the occlusal piece (805) is annular, one side of the occlusal piece (805) towards the flexible layer (806) is equipped with lug (8051), and the outer surface of the lug (8051) is fixedly equipped with multiple occlusal teeth (8052).

4. A sampling device for use in mine beneficiation according to claim 3, characterised in that: The cross-sectional shape of the lug (8051) is triangular, and the cross-sectional shape of the occlusal tooth (8052) is triangular.

5. A sampling device for use in mineral processing according to claim 2, characterised in that: The outer surface of the inner sleeve (801) away from the outer sleeve (802) one end is equipped with screw thread, and the mounting seat (7) is equipped with threaded hole that is matched with the screw thread of the outer surface of the inner sleeve (801).

6. A sampling device for use in mineral processing according to claim 2, characterised in that: The cylinder cover (803) is connected with the outer sleeve (802) screw, and the outer surface of the cylinder cover (803) is equipped with rubber layer.

7. A sampling device for use in mineral processing according to claim 1, characterized in that: The driving mechanism (6) includes second gear (601) engaged with one of the first gear (5), and the mounting bracket (2) is fixedly installed with driving member (602) corresponding the position of the second gear (601), and the output end of the driving member (602) is connected with the second gear (601).

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