Caving sampling equipment for prospecting

Abstract

The invention provides hole exploration sampling equipment for prospecting, and relates to the field of prospecting. The sampling equipment is mainly composed of an upper fixing disc, a lower fixing disc, a lead screw, a polished rod, a motor, a sliding block, a sampling drill, a transmission mechanism, a feeding mechanism and a material receiving chute, the upper fixing disc and the lower fixing disc are used for fixing the sampling equipment in an exploration hole, and the sliding block, the lead screw, the polished rod and the motor form a linear motion mechanism moving in the vertical direction. The feeding mechanism and the transmission mechanism are used for driving the sampling drill to sample, and the material receiving chute is arranged below the sampling drill and is used for collecting falling geological samples. According to the invention, the continuous sampling of the caving is realized in a certain depth interval, and the drilled geological sample can be put into the storage grid with the corresponding height, so that geological prospecting personnel can intuitively and clearly establish a relationship between the sampled geological sample and the depth of the caving. The device is ingenious and compact in structure, the outer diameter of sampling equipment is reduced to the maximum extent, and then the excavation cost of an exploration hole is greatly reduced.

Description

Technical Field

[0001] The present invention specifically relates to a cave sampling device for prospecting, and relates to the technical field of prospecting. Background Art

[0002] Prospecting is a project that aims to find out the distribution of mineral resources based on geological exploration. Traditional prospecting adopts the method of sampling while drilling. The biggest problem is that it requires frequent lifting and disassembly of the drill rod, resulting in low prospecting efficiency. At present, most of the prospecting methods adopted are drilling first and then sampling. After drilling the exploration hole once, the sampling equipment is hoisted into the exploration hole to sample the hole wall, which can significantly improve the excavation efficiency of the exploration hole.

[0003] The current cave sampling equipment mainly consists of a disc, a telescopic rod, a sampling drill and a sample collection box. The telescopic rod is used to fix the sampling equipment in the cave, and the sampling drill is used to drill the cave wall for sampling. The existing cave sampling equipment has the following shortcomings: 1. Only sampling can be performed on the exploration cave at a certain depth, and the sampling efficiency is low; 2. After each sampling, the sampling equipment needs to be lifted out of the exploration hole to empty the sample collection box, otherwise it will cause confusion in geological samples and lose the meaning of prospecting; 3. Continuous sampling cannot be achieved, which is not conducive to identifying the distribution of minerals; 4. The large diameter requires the exploration cave to have a larger hole diameter, which increases the excavation cost of the exploration cave.

[0004] References: Chinese Patent: CN 112729912 B Chinese Patent: CN 118670793 B Chinese Patent: CN 109490011 B Summary of the invention

[0005] In order to overcome the shortcomings of the background technology, the present invention discloses a cave sampling device for prospecting, the purpose of which is: 1. Realize continuous sampling of the cave within a certain depth range; 2. Place the geological samples into the storage grid at the corresponding height according to the sampling depth; 3. Optimize the structure and reduce the diameter of the equipment.

[0006] The present invention adopts the following technical solution: Technical Solution

[0007] A cave sampling device for prospecting, comprising: The upper fixing plate and the lower fixing plate have a plurality of radial electric push rods for fixing the sampling equipment in the exploration cave; The lead screw and the smooth rod are vertically arranged between the upper fixed plate and the lower fixed plate; the lead screw is hollow inside, and a plurality of storage grids for storing geological samples are evenly arranged in the lead screw along the vertical direction; A motor is mounted on the upper fixed plate or the lower fixed plate and is used to drive the lead screw to rotate; The slider, together with the lead screw, the smooth rod and the motor, forms a linear motion mechanism that moves in the vertical direction; the slider has a feed chute that is connected to a certain material storage grid, and a cylindrical surface that matches the outer surface of the lead screw is provided at the outlet end of the feed chute; each time the lead screw rotates one circle, the feed chute is connected to a material storage grid adjacent to the material storage grid; The transmission mechanism is composed of a driving bevel gear and a driven bevel gear shaft, wherein the driving bevel gear is slidably mounted on the lead screw through a key structure, and the driven bevel gear shaft is horizontally mounted on a slide block and meshedly connected with the driving bevel gear; The sampling drill has a drill rod, and the drill rod is telescopically connected to the driven bevel gear shaft through a spline structure; A feeding mechanism is installed between the slide block and the sampling drill and is used to push the sampling drill to move along the radial direction of the exploration hole; The receiving chute is arranged below the sampling drill and connected to the feeding chute to collect the fallen geological samples.

[0008] After implementing technical solution 1, compared with the background technology, the beneficial effects produced by the present invention are: 1. The lead screw has a long length, so that the sampling drill has enough moving distance in the vertical direction. In this way, the sampling drill can continuously sample the exploration hole within a certain depth range of the exploration hole.

[0009] 2. Since the feed chute and the storage grid are connected in a corresponding manner, the geological samples drilled during the rise or fall of the sampling drill by one pitch can enter the storage grid at the corresponding height through the feed chute every time the lead screw rotates one circle, so that geological prospectors can intuitively and clearly establish the relationship between the sampled geological samples and the depth of the exploration hole, thereby obtaining detailed and reliable geological structure information.

[0010] 3. The sampling drill needs a relatively high-power motor to provide drilling power to drill into the rock. The present invention installs the motor on the upper fixed plate or the lower fixed plate, which minimizes the outer diameter of the sampling equipment; in addition, the lead screw has another function, which is to transmit the drilling power to the sampling drill axially through the active bevel gear and the driven bevel gear. This transmission structure is ingenious and compact, which further reduces the outer diameter of the sampling equipment. Compared with the existing sampling equipment, the present cave sampling equipment has a smaller outer diameter, which means that the diameter of the cave can also be reduced accordingly, greatly reducing the cost of cave excavation.

[0011] Improved technical solution 2 based on technical solution 1: The sampling device also includes a reducer connected to the motor, the motor and the reducer are vertically installed downward on the upper fixed plate, and a hanging ring is installed on the top of the motor.

[0012] After implementing technical solution 2, the beneficial effects are: In order to make the material storage grid have a sufficiently large feed opening, the pitch of the lead screw is set larger, so a reducer is required to reduce the speed of the lead screw and increase the driving torque applied by the lead screw to the slider and the sampling drill. Installing the lifting ring on the top of the motor helps to simplify the structure and improve the compactness of the equipment.

[0013] Improved technical solution 3 based on technical solution 2: the number of teeth of the active bevel gear is greater than the number of teeth of the driven bevel gear shaft, and a thrust bearing is arranged between the active bevel gear and the slider.

[0014] After implementing Technical Solution 3, the beneficial effect is as follows: since the rotation speed of the lead screw is very low, it is necessary to set an appropriate speed increase ratio to increase the rotation speed of the sampling drill so that the sampling drill has better drilling parameters.

[0015] Improved technical solution 4 based on technical solution 1: The feeding mechanism consists of a pair of feeding electric push rods and a thrust plate, the pair of feeding electric push rods are symmetrically installed on both sides of the driven bevel gear shaft, and the thrust plate is connected to the drill pipe through a thrust bearing.

[0016] After implementing Technical Solution 4, the beneficial effects are as follows: the feeding mechanism has two functions: one is to retract the sampling drill when the sampling equipment is hoisted into and out of the exploration hole, so as not to hinder the entry and exit of the sampling equipment; the other is to drive the sampling drill forward and reach a certain drilling depth. A pair of feeding electric push rods is used because the two feeding electric push rods can provide a larger and better propulsion force.

[0017] Improved technical solution 5 based on technical solution 4: the material receiving chute is hinged below the propulsion plate.

[0018] After implementing Technical Solution 5, the beneficial effect is that the hinged structure can make the material chute be in a folded state when the sampling equipment enters and exits the exploration hole, and in an expanded state when the sampling drill is drilling, and just located below the sampling drill.

[0019] Improved technical solution 6 based on technical solution 4: The interior of the optical bar is hollow, and an electric cable is arranged inside the optical bar. The cable is electrically connected to the motor, radial push electric push rod, and feed electric push rod respectively, and is used to supply power to the motor, radial push electric push rod, and feed electric push rod.

[0020] After implementing technical solution 6, the beneficial effect is that the sampling device is not suitable for using lithium batteries because of the long working time and high energy consumption. The preferred implementation scheme is to connect the power supply outside the cavern through a cable. The cable is set in the optical bar, one cable is used to power the motor and radial push rod on the upper fixed plate, one cable is used to power the feed push rod on the slider, and one cable is used to power the radial push rod on the lower fixed plate, which plays a protective role on the cable.

[0021] Improved technical solution 7 based on technical solution 1: The sampling equipment also includes a camera, a sensor and a remote control system.

[0022] After implementing Technical Solution 7, the beneficial effects are: setting up a camera to facilitate ground exploration personnel to observe the sampling situation; setting up a sensor to facilitate ground exploration personnel to know the working status of the sampling equipment; setting up a remote control system to facilitate ground exploration personnel to operate the sampling equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Attached Figure 1 What is shown is a schematic diagram of the three-dimensional structure of the cave sampling equipment at a certain viewing angle.

[0024] Attached Figure 2 Shown is a schematic diagram of the three-dimensional structure of the cave sampling equipment from another perspective.

[0025] Attached Figure 3 Shown is a schematic diagram of a partial cross-sectional structure of a lead screw.

[0026] Attached Figure 4 Shown is a schematic structural diagram of a slider.

[0027] Attached Figure 5 Shown is a schematic structural diagram of a transmission mechanism.

[0028] Attached Figure 6 Shown is a schematic structural diagram of the feeding mechanism.

[0029] Attached Figure 7 Shown is a schematic diagram of the working of the sampling device in the cave.

[0030] Attached Figure 8 The attached Figure 7 A local enlarged schematic diagram of point P in the middle.

[0031] In the attached drawings: 1. Upper fixed plate; 2. Lower fixed plate; 3. Radial push rod; 4. Light rod; 5. Lead screw; 5.1. Material storage grid; 5.2. Segmental key structure; 6. Motor; 7. Reducer; 8. Slider; 8.1. Feed chute; 8.2. Internal threaded hole; 8.3. Light hole; 8.4. Cylindrical surface; 9. Active bevel gear; 10. Driven bevel gear shaft; 11. Sampling drill; 12. Feed electric push rod; 13. Push plate; 14. Thrust bearing; 15. Material receiving chute; 16. Cable; 17. Camera; 18. Lifting ring; 19. Wire rope. DETAILED DESCRIPTION

[0032] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these preferred embodiments are only used to explain the technical principles of the present invention and are not intended to limit the scope of protection of the present invention. It should be noted that in the description of the present invention, the terms "front", "rear", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and other terms indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. This is only for the convenience of description, and does not indicate or imply that the device or component must have a specific orientation and positional relationship, and therefore cannot be understood as a limitation of the present invention. It should also be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or the internal connection of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0033] The invention discloses a cave sampling device for prospecting, which relates to the field of prospecting and is mainly used to solve the problem that the cave sampling device in the prior art cannot continuously sample. The composition structure and working principle of the sampling device are specifically described below.

[0034] Refer to the attached Figure 1 and attached Figure 2 The cave sampling equipment is mainly composed of an upper fixed plate 1, a lower fixed plate 2, a lead screw 5, a light bar 4, a motor 6, a reducer 7, a slide block 8, a sampling drill 11, a transmission mechanism, a feeding mechanism and a material receiving chute 15. The equipment is in the shape of a thin strip as a whole and can be hoisted into the cave by a winch.

[0035] The upper fixed plate 1 and the lower fixed plate 2 are respectively arranged at the upper and lower ends of the equipment, and three radial push electric push rods 3 are arranged radially in the upper fixed plate 1 and the lower fixed plate 2. The function of the upper fixed plate 1 and the lower fixed plate 2 is to fix the sampling equipment in the exploration hole by extending the radial push electric push rods 3 when sampling; after sampling, the radial push electric push rods 3 retract, so that the equipment can be lifted out of the exploration hole by a winch.

[0036] The lead screw 5 and the optical rod 4 are vertically arranged between the upper fixed plate 1 and the lower fixed plate 2, wherein the lead screw 5 is located on the center line of the device. In this embodiment, the outer diameter of the lead screw 5 is 40 mm, the pitch is 20 mm, and the length is 5.3 m. It is worth noting that for the sake of illustration, the length and pitch of the lead screw in the figure are distorted.

[0037] Refer to the attached Figure 3 , attached Figure 3 FIG. 5 shows a partial cross-sectional structural diagram of the lead screw 5. Figure 3 It can be seen that the interior of the lead screw 5 is hollow, and a plurality of storage grids 5.1 for storing geological samples are arranged equidistantly in the vertical direction inside the lead screw 5, and the distance between two adjacent storage grids 5.1 is equal to the pitch of the lead screw 5. The partitions of the storage grids 5.1 can be fixed in the lead screw by bonding or welding. A plastic cannula with a storage grid structure can also be used and inserted into the lead screw from the lower end of the lead screw, which makes it easy to take out the geological samples. In addition, a circular key structure 5.2 is provided along the axial direction of the lead screw 5, and the feed port of the storage grid 5.1 is located on the plane of the key structure.

[0038] The motor 6 and the reducer 7 are vertically mounted downward on the upper fixed plate 1, and the motor 6 is connected to the lead screw 5 through the reducer 7 to drive the lead screw 5 to rotate. The sampling drill 11 needs a relatively large-power motor 6 to provide drilling power to drill into the rock. The motor 6 is mounted on the upper fixed plate 1, which can minimize the outer diameter of the device.

[0039] In order to simplify the structure and improve the compactness of the device, a lifting ring 18 is installed on the top of the motor 6, and the lifting ring 18 is connected to the hoist through a wire rope 19, which is used to lift the device into the exploration cave. In order to make the storage grid 5.1 have a sufficiently large feeding port, the pitch of the screw 5 is usually set larger, so a reducer 7 is required to reduce the rotation speed of the screw 5.

[0040] Refer to the attached Figure 4 , attached Figure 4 What is shown is the structural schematic diagram of the slider 8. Figure 4 It can be seen that the slider 8 has an internal threaded hole 8.2 that rotates with the lead screw 5, and also has a light hole 8.3 that slides with the light bar 4. In this way, the slider 8, the lead screw 5, the light bar 4, and the motor 6 form a linear motion mechanism that moves in the vertical direction. Every time the motor 6 rotates one circle, the slider 8 moves a pitch distance in the vertical direction.

[0041] In addition, a feed chute 8.1 inclined toward one end of the lead screw 5 is provided in the slider 8, and the lower oblique end (exit end) of the feed chute 8.1 is correspondingly connected to a certain storage grid 5.1 on the lead screw 5, and a cylindrical surface 8.4 matching the outer circumference of the lead screw 5 is provided at the outlet end of the feed chute 8.1. Every time the lead screw 5 rotates one circle, the feed chute 8.1 is correspondingly connected to a storage grid 5.1 adjacent to the storage grid 5.1. When the lead screw 5 rotates less than one circle, the outlet end of the feed chute 8.1 will be blocked by the outer circumference of the lead screw 5, and the geological sample in the feed chute 8.1 will not fall out, but can only remain in the feed chute 8.1.

[0042] Refer to the attached Figure 5 , attached Figure 5 The figure shows the schematic diagram of the transmission mechanism. Figure 5 It can be seen that the transmission mechanism is composed of a driving bevel gear 9 and a driven bevel gear shaft 10. Among them, the driving bevel gear 9 is installed on the lead screw 5 and connected to the slider 8 through a thrust bearing 14. The inner hole of the driving bevel gear 9 has a key structure that matches the circular key structure 5.2, so the driving bevel gear 9 can move up and down with the slider 8 while following the rotation of the lead screw 5. The driven bevel gear shaft 10 is horizontally installed on the slider 8 through a bearing, and the bevel gear at the inner end of the driven bevel gear shaft 10 is meshed and connected with the driving bevel gear 9. The inner end of the sampling drill 11 has a drill rod, which is telescopically connected to the driven bevel gear shaft 10 through a spline structure. In this way, when the lead screw 5 rotates, the driving bevel gear 9 can drive the sampling drill 11 to rotate through the driven bevel gear shaft 10. This transmission structure is ingenious and compact, and further reduces the outer diameter of the sampling device.

[0043] Since the speed of the lead screw 5 is very low, it is necessary to set an appropriate speed increase ratio to increase the speed of the sampling drill 11, thereby making the sampling drill 11 have better drilling parameters. In this embodiment, the number of teeth of the active bevel gear 9 is twice the number of teeth of the driven bevel gear shaft 10.

[0044] Refer to the attached Figure 6 , attached Figure 6 The figure shows the structural diagram of the feeding mechanism. Figure 6 It can be seen that the feeding mechanism is installed between the slider 8 and the sampling drill 11, and is used to push the sampling drill 11 to move radially along the exploration hole. Specifically, the feeding mechanism consists of a pair of feeding electric push rods 12 and a push plate 13, and the pair of feeding electric push rods 12 are symmetrically installed on both sides of the driven bevel gear shaft 10, and the push plate 13 is connected to the drill rod of the sample drill bit through a thrust bearing 14.

[0045] The feeding mechanism has two functions: one is to retract the sampling drill 11 when the sampling equipment is hoisted into and out of the exploration hole, so as not to hinder the entry and exit of the sampling equipment; the other is to drive the sampling drill 11 forward and reach a certain drilling depth. A pair of feeding electric push rods 12 is used because the two feeding electric push rods 12 can provide a larger and better propulsion force.

[0046] The material receiving chute 15 is tilted toward one side of the slide block 8 and is used to collect geological samples dropped by the sampling drill 11 during drilling. In this embodiment, the material receiving chute 15 is hinged below the push plate 13 and connected to the feeding chute 8.1. This hinged structure can make the material chute in a folded state when the sampling device enters and exits the exploration hole, and in an unfolded state when the sampling drill 11 is drilling, and just below the sampling drill 11.

[0047] Since the sampling operation takes a long time and consumes a lot of energy, the sampling device is not suitable for using lithium batteries as a power source. A better implementation scheme is to connect the power supply outside the cavern through the cable 16 to power the motor 6, the radial push rod 3, and the feed push rod 12. In order to protect the cable 16, the interior of the optical bar 4 is hollow, and the cable 16 is arranged inside the optical bar 4. One cable 16 powers the motor 6 and the radial push rod 3 on the upper fixed plate 1, one cable powers the feed push rod 12 on the slider 8, and one cable powers the radial push rod 3 on the lower fixed plate 2.

[0048] In addition, the sampling device also includes a camera 17, a sensor (not shown in the figure) and a remote control system (not shown in the figure). The camera 17 is provided to facilitate ground exploration personnel to observe the sampling situation; the sensor is provided to facilitate ground exploration personnel to know the working status of the sampling device; the remote control system is provided to facilitate ground exploration personnel to operate the sampling device.

[0049] Working principle: Refer to the attached Figure 7 , attached Figure 7 The diagram shows the working of the sampling device in the cave. For example, if the depth of a cave is 20 meters, the effective travel of the sampling drill 11 of the device moving up and down along the lead screw 5 is 5 meters, so the cave can be sampled four times.

[0050] When sampling, first use a winch to hoist the sampling device into the specified depth in the exploration hole, then push the electric push rod 3 on the upper fixing plate 1 and the lower fixing plate 2 forward to fix the sampling device in the exploration hole.

[0051] Refer to the attached Figure 8 , attached Figure 8 The attached Figure 7A partial enlarged schematic diagram at point P in the middle. Start the motor 6 and the feed electric push rod 12, so that the sampling drill 11 drills into the cave wall and moves upward in the vertical direction of the exploration cave. In the process of the sampling drill 11 drilling the cave wall, the fallen geological samples enter the feed chute 8.1 through the receiving chute 15. When the screw 5 has not rotated a full circle, since the outlet end of the feed chute 8.1 is blocked by the outer cylindrical surface of the screw 5, the geological samples can only remain in the feed chute 8.1. When the screw 5 rotates a full circle, the feed chute 8.1 is connected to the corresponding storage grid 5.1 next to it, and the geological samples in the feed chute 8.1 slide into the storage grid 5.1. In this way, every time the lead screw 5 rotates one circle, the geological samples drilled during the period when the sampling drill 11 rises one pitch can enter the storage grid 5.1 of the corresponding height through the feed chute 8.1, so that geological prospectors can intuitively and clearly establish a relationship between the sampled geological samples and the depth of the exploration hole, thereby obtaining detailed and reliable geological structure information. In addition, because the lead screw 5 has a long length, the sampling drill 11 can continuously sample the exploration hole within a certain depth range of the exploration hole.

[0052] The device can reciprocate to take samples. After taking samples upward, it can change the angle and take samples downward until each storage grid 5.1 collects a sufficient amount of geological samples. Compared with the existing sampling equipment, the cave sampling equipment has a smaller outer diameter, which means that the diameter of the cave can also be reduced accordingly, greatly reducing the cost of cave excavation.

[0053] It is worth noting that the contents not described in detail in the above embodiments are prior art. It is also worth noting that for those skilled in the art, any addition, subtraction, replacement and improvement made under the structure and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A cave sampling device for prospecting, characterized in that: include: The upper fixing plate and the lower fixing plate have a plurality of radial electric push rods for fixing the sampling equipment in the exploration cave; The lead screw and the smooth rod are vertically arranged between the upper fixed plate and the lower fixed plate; the lead screw is hollow inside, and a plurality of storage grids for storing geological samples are evenly arranged in the lead screw along the vertical direction; A motor is mounted on the upper fixed plate or the lower fixed plate and is used to drive the lead screw to rotate; The slider, together with the lead screw, the smooth rod and the motor, forms a linear motion mechanism that moves in the vertical direction; the slider has a feed chute that is connected to a certain material storage grid, and a cylindrical surface that matches the outer surface of the lead screw is provided at the outlet end of the feed chute; each time the lead screw rotates one circle, the feed chute is connected to a material storage grid adjacent to the material storage grid; The transmission mechanism is composed of a driving bevel gear and a driven bevel gear shaft, wherein the driving bevel gear is slidably mounted on the lead screw through a key structure, and the driven bevel gear shaft is horizontally mounted on a slide block and meshedly connected with the driving bevel gear; The sampling drill has a drill rod, and the drill rod is telescopically connected to the driven bevel gear shaft through a spline structure; A feeding mechanism is installed between the slide block and the sampling drill and is used to push the sampling drill to move along the radial direction of the exploration hole; The receiving chute is arranged below the sampling drill and connected to the feeding chute to collect the fallen geological samples.

2. A cave sampling device for prospecting as claimed in claim 1, characterized in that: The sampling device also includes a reducer connected to the motor. The motor and the reducer are vertically mounted downward on the upper fixing plate, and a hanging ring is mounted on the top of the motor.

3. A cave sampling device for prospecting as claimed in claim 2, characterized in that: The number of teeth of the active bevel gear is greater than the number of teeth of the driven bevel gear shaft, and a thrust bearing is arranged between the active bevel gear and the slider.

4. The cave sampling equipment for prospecting as claimed in claim 1, characterized in that: The feeding mechanism consists of a pair of feeding electric push rods and a pushing plate. The pair of feeding electric push rods are symmetrically installed on both sides of the driven bevel gear shaft, and the pushing plate is connected to the drill rod through a thrust bearing.

5. A cave sampling device for prospecting as claimed in claim 4, characterized in that: The material receiving chute is hinged below the advancing plate.

6. A cave sampling device for prospecting as claimed in claim 4, characterized in that: The interior of the optical bar is hollow, and a cable is arranged inside the optical bar. The cable is electrically connected to the motor, the radial push electric push rod, and the feed electric push rod respectively, and is used to supply power to the motor, the radial push electric push rod, and the feed electric push rod.

7. The cave sampling equipment for prospecting as claimed in claim 1, characterized in that: The sampling device also includes a camera, a sensor and a remote control system.

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