CN107328600B

CN107328600B - Wood sampler

Info

Publication number: CN107328600B
Application number: CN201710438208.5A
Authority: CN
Inventors: 汪来发; 王曦茁; 朴春根; 李永; 林彩丽; 薛寒
Original assignee: Research Institute of Forest Ecology Environment and Protection of Chinese Academy of Forestry
Current assignee: Research Institute of Forest Ecology Environment and Protection of Chinese Academy of Forestry
Priority date: 2017-06-12
Filing date: 2017-06-12
Publication date: 2020-04-28
Anticipated expiration: 2037-06-12
Also published as: CN107328600A

Abstract

The invention discloses a wood sampler, which comprises an electric hand drill, a drill bit, a sample collector and a telescopic mechanism, wherein the drill bit is arranged on the electric hand drill; the drill bit is arranged on a chuck of the electric hand drill, the telescopic mechanism comprises a cylinder body, the rear end of the cylinder body is detachably connected with the front end of the electric hand drill, the sample collector is sleeved in the cylinder body, and the sample collector and the cylinder body are in sliding fit; the drill bit is positioned on the axis of the cylinder and the sample collector; the spiral spring of the telescopic mechanism is positioned between the collector and the electric hand drill. The back end of a cylinder body of a telescopic mechanism is detachably connected with the front end of an electric hand drill, and a sample collector is sleeved in the cylinder body and is in sliding fit with the cylinder body; the drill bit is positioned on the axis of the cylinder and the sample collector; the technical scheme that the spiral spring of the telescopic mechanism is positioned between the collector and the electric hand drill and the like solves the defect that the existing wood sampler easily pollutes samples.

Description

Wood sampler

Technical Field

The invention relates to a wood sampler, in particular to a wood cutting and sampling device, which is mainly used for sampling wood (trunk) and belongs to the field of wood samplers.

Background

Korean patent document in the prior art

10-1334735 discloses a wood sampler, the main structure (see fig. 1) of which comprises an electric drill 9, a drill bit 20, a cylinder 40, a sample collector 50 and a telescoping mechanism 30, wherein the drill bit 20 is arranged on a chuck 95 of the electric drill 9, the cylinder 40 is connected with the front end of the electric drill main body through the telescoping mechanism 30, the drill bit 20 is positioned at the axis of the cylinder 40, and the sample collector 50 is vertically arranged at the lower side of the cylinder 40. The telescoping mechanism 30 comprises a front disc 32, a rear disc 31, guide rods 34 and a spring 33, the rear ends of the three guide rods 34 are connected with a springThe rear disc 31 arranged at the front end of the electric drill is connected, the rear end of the cylinder body 40 and the front disc 32 are of an integral structure, three through holes are uniformly distributed in the front disc 32, the guide rods 34 are sleeved with the springs 33, and the front ends of the three guide rods 34 respectively penetrate through the three through holes of the front disc 32 in a sliding mode. In use, the front end of the barrel 40 is held against the wood, the front end of the drill 9 compresses the spring 33, the drill bit 20 drills into the wood, and the drilled wood chips enter the barrel 40 and slide into the sample collector 50. The disadvantages of this wood sampler are:

1. the drilled wood chips enter the barrel 40 and slide into the sample collector 50. The collector 50 is replaced before sampling again, and the barrel 40 is reused, and the previous sampling will contaminate the sampling again, affecting the accuracy of the sampling.

2. The drilled sawdust slides into the sample collector along the bottom of the inner wall of the cylinder under the action of gravity, and when the rear end of the drill bit is higher than the front end of the drill bit, the sawdust is accumulated to the front end of the cylinder to influence the collection of samples; when the rear end of drill bit is less than front end and inclination great, the gliding force that the saw-dust received is great, and partial saw-dust can slide the upper shed of collector, spills from the rear end of barrel, influences the collection of sample equally, and the sample angle scope is less.

3. The guide rod is used for positioning the cylinder, the strength is low, and the drill bit and the cylinder are easy to be eccentric.

4. The drilling depth is uncontrollable and cannot be controlled as required, the drilling depth is too deep, unnecessary damage is caused to the growing trees, and too shallow sampling amount is insufficient.

Disclosure of Invention

The invention aims to solve the main technical problem of overcoming the problem that the existing wood sampler is easy to pollute samples and provides a novel wood sampler which can effectively eliminate the pollution of the previous sampling to the next sampling.

In order to solve the problems, the technical scheme adopted by the invention is as follows:

a wood sampler comprises an electric hand drill, a drill bit, a sample collector and a telescopic mechanism; the drill bit is arranged on a chuck of the electric hand drill; the telescopic mechanism comprises a barrel, the rear end of the barrel is detachably connected with the front end of the electric hand drill, the sample collector is sleeved in the barrel, and the sample collector and the barrel are in sliding fit; the drill bit is positioned on the axis of the cylinder and the sample collector; the spiral spring of the telescopic mechanism is positioned between the collector and the electric hand drill; the wood sampler adopts the structure, so that the wood chips obtained by sampling are accumulated in the sample collector, after sampling is finished, the sample collector is taken down, a new clean sample collector is arranged for sampling again, and the pollution of the previous sampling on the sampling again is effectively eliminated.

In order to achieve better technical effect, the front end opening of the sample collector is a necking, and the rear end of the sample collector is provided with a chip blocking hole; the drill bit passes through the chip blocking hole at the rear end of the sample collector. According to the invention, the necking is adopted at the front port of the sample collector, and the chip blocking hole is arranged at the rear end of the sample collector, so that the technical problem that the chips drilled by sampling leak out at the front end and the rear end of the sample collector is effectively solved, and the sampling angle range of the wood sampler is wider.

The diameter of a chip blocking hole at the rear end of the sample collector is 3.0-5.0mm larger than that of the drill bit; preferably, the diameter of the chip blocking hole at the rear end of the sample collector is 3.5-4.5mm larger than that of the drill bit; more preferably, the diameter of the chip blocking hole at the rear end of the sample collector is 4.0mm larger than the diameter of the drill bit. The inventor finds that if the aperture of the chip blocking hole at the rear end of the sample collector is smaller than the diameter of the drill by 3mm through a large number of experiments, the drill is easy to rub the chip blocking hole; the diameter of the hole is larger than the diameter of the drill bit by 5mm, so that the sawdust is easy to leak out from the sawdust blocking hole.

The front port of the sample collector is in detachable sealing fit with the front cover, and the rear port of the sample collector is in detachable sealing fit with the rear cover; from this, after the sample, take off the sample collector, the saw-dust that protecgulum and back lid drilled the sample seals in the sample collector, the save and the transportation of the sample of being convenient for.

The inside of the cylinder body is provided with a reducing step, the rear end of the spiral spring is abutted against the step, the front end of the spiral spring is arranged in a concave cavity of the spring cover, the diameter of a central hole at the bottom of the spring cover is equal to or larger than that of the scrap blocking hole, the end surface at the bottom of the spring cover is in contact fit with the rear end of the collector, and the outer diameter of the spring cover is in sliding fit with the inner diameter of the cylinder body; the rear end of the barrel is detachably connected with the front end of the electric hand drill, at least three radial screw holes are formed in the circumference of the rear end of the barrel, the barrel and the electric hand drill are fastened with each other through fastening bolts arranged in the radial screw holes, or the detachable connection is threaded connection or flange connection, the barrel and the electric hand drill are high in connection strength through the fastening bolts or the threads or the flanges, and the drill bit and the barrel are good in concentricity.

As a preferable structure of the invention, the sample collector is a split structure, the scrap blocking hole is positioned in the center of the scrap blocking cover, the scrap blocking cover is detachably connected with the rear end of the sample collector, and the scrap blocking cover is detachably connected with the rear end of the sample collector, so that the scrap blocking cover is conveniently detached, and the inside of the sample collector is cleaned.

As another preferable structure of the invention, an elastic mouth pad is sleeved on the front port of the sample collector, and the sample collector is detachably connected with the elastic mouth pad; when in sampling, the soft elastic mouth pad can be better contacted with the sampled wood, and the sampling angle range of the wood sampler is further expanded.

In order to control the drilling depth according to the requirement, as a further preferable structure of the invention, the wood sampler is provided with a drilling depth alarm device; the drilling depth alarm device comprises an axial sliding chute arranged at the front end of the cylinder body and a convex block arranged on the periphery of the sample collector, and the lower part of the convex block is in sliding fit with the axial sliding chute; the upper part of the lug is connected with a touch rod; the electric hand drill is provided with a trigger switch and a buzzer, and the rear end of the touch rod is correspondingly matched with the trigger switch.

The main advantages of the invention include: the wood sampler avoids the pollution of the previous sampling to the secondary sampling, and effectively improves the sampling accuracy; the sampling angle is large, and the problem that the sampling angle range of the existing wood sampler is small is solved; the connection strength of the cylinder body and the electric hand drill is high, and the concentricity of the drill bit and the cylinder body is good; in addition, the drilling depth is controllable, and the drilling depth can be controlled according to the requirement.

Drawings

FIG. 1 is a schematic perspective view of a prior art construction;

FIG. 2 is a schematic view of the general structure of the first embodiment of the present invention;

figure 3 is a schematic view of the assembled configuration of the drill and drill bit of figure 2;

FIG. 4 is an axial cross-sectional view of the assembled sample collector and telescoping mechanism of FIG. 2;

FIG. 5 is a left side view of FIG. 4;

FIG. 6 is an axial cross-sectional view of the barrel of the telescoping mechanism of FIG. 4;

FIG. 7 is an axial cross-sectional view of the overall construction of a sample collector of the present invention;

FIG. 8 is an axial cross-sectional view of a spring cover of the telescoping mechanism of FIG. 4;

FIG. 9 is a schematic view of the overall structure of a second embodiment of the present invention;

FIG. 10 is an axial cross-sectional view of the assembled sample collector and telescoping mechanism arrangement of FIG. 9;

fig. 11 is a schematic diagram of the working principle of the first embodiment of the present invention.

Detailed Description

Referring to fig. 2 to 8, a first embodiment of a wood sampler according to the present invention includes an electric hand drill 9, a drill 20, a telescopic mechanism 2, and a sample collector 1, wherein the drill 20 is mounted on a chuck 95 at the front end of the electric hand drill 9. The telescopic mechanism 2 comprises a cylinder 21, a spiral spring 23 and a spring cover 22, the inner diameter of the rear end of the cylinder 21 is in transition fit with the front end of the electric hand drill 9, three radial screw holes 213 are arranged along the circumference, and fastening bolts 3 are arranged in the radial screw holes 213; a reducing step 211 is arranged in the cylinder 21, the rear end of the coil spring 23 abuts against the step 211, the front end of the coil spring 23 is arranged in a concave cavity of the spring cover 22, a central hole 221 matched with the drill bit 20 is arranged at the bottom end of the spring cover 22, the diameter of the central hole 221 is equal to that of the chip blocking hole 131, and the outer diameter of the spring cover 22 is in sliding fit with the inner diameter of the cylinder 21; the front end of the cylinder 21 is provided with a sample collector 1, the outer diameter of the sample collector 1 is in sliding fit with the inner diameter of the cylinder 21, and both ends are respectively provided with a through hole for passing through a drill (the front end is a reducing opening 111, and the rear end is a chip blocking hole 131 arranged at the center of the chip blocking cover 13). The rear of the barrel 21 is provided with a flared portion 212 to engage the front of the drill 9, the drill bit 20 being located on the axis of the barrel 21 and sample collector 1.

The detachable connection structure of the rear end of the cylinder 21 and the front end of the electric hand drill 9 can also be a threaded connection or a flange connection (not shown).

The drill bit 20 penetrates through a chip blocking hole 131 (in the center of the chip blocking cover 13) at the rear end of the sample collector 1, and the diameter of the chip blocking hole 131 is 4.0mm larger than that of the drill bit 20;

the front end and the rear end of the sample collector 1 are respectively provided with a front cover 12 and a rear cover 14, the front port of the sample collector 1 is in plug-in sealing fit with the front cover 12, and the rear port (chip blocking hole 131) of the sample collector 1 is in plug-in sealing fit with the rear cover 14. The sample collector 1 in the figure is a split structure, and the scrap blocking cover 13 of the sample collector 1 is screwed at the rear end of the sample collector 1 by hands, so that the sample collector 1 can be cleaned conveniently. A chip blocking hole 131 is provided in the center of the chip blocking cover 13.

The front end of the chip blocking cover 13 is a circular truncated cone and is in threaded connection with the rear end of the sample collector 1; the back end of the chip blocking cover 13 is an outer flange, the outer diameter of the outer flange is the same as that of the sample collector 1, and an elastic mouth pad made of latex is clamped on the necking opening 111.

Referring to fig. 9 and 10, a drilling depth alarm device is further arranged on the electric hand drill 9, the telescopic mechanism 2 and the sample collector 1.

One embodiment of the drilling depth alarm device is as follows: the front end of the cylinder body 21 is provided with an axial sliding groove 214, the periphery of the sample collector 1 is provided with a convex block 4, and the lower part of the convex block 4 is in sliding fit with the axial sliding groove 214; a touch rod 5 is connected on the convex block 4; the electric hand drill 9 is provided with a trigger switch 6 and a buzzer 7, and the trigger switch 6 is connected in series in a circuit of the buzzer 7; the rear end of the touch rod 5 extends to the front end of the electric hand drill 9 and corresponds to the touch end of the touch switch 6. The buzzer 7 may also be an LED, or both.

The touch rod 5 is a telescopic structure (not shown in the figure, the length can be adjusted, and the length can be locked by a locking screw) or a plurality of touch rods 5 with different degrees are adopted, the front end of the touch rod 5 is connected in a screw hole of the convex block 4 through threads, or is inserted in a hole of the convex block 4 in a transition fit manner, and is positioned through a flange 51 arranged at the front end of the touch rod 5.

The drilling depth alarm device can also adopt a laser ranging device, can set an alarm distance and sends out an acoustic/optical alarm signal when the drilling depth reaches the set distance.

Before sampling, selecting a touch rod 5 with a proper length, and inserting a shaft head of the touch rod into a hole in the upper part of the bump 4; when sampling, the sample collector 1 drives the touch rod 5 to move backwards, when the preset drilling depth is reached, the rear end of the touch rod 5 presses a buzzer normally open switch, and a direct current circuit of a buzzer 7 is connected for alarming; after sampling, the sample collector 1 is removed and the trip bar 5 is pulled out.

The electric hand drill 9 of the invention is a common structure, a handle 93 is arranged under a main body 91 of the electric hand drill, the handle 93 is provided with a rechargeable battery 91, an instant switch 94 is arranged at the front side of the handle 93, and a drill chuck 95 is arranged at the front end of the main body 91.

Referring to fig. 11, when the present invention is used, the rear end of the cylinder 21 of the telescoping mechanism 2 is fastened to the front end of the electric hand drill 9 with the drill bit 20 mounted thereon by the fastening bolt 3, and then the sample collector 1 is sleeved into the front end of the cylinder 21; the drill bit 20 (or the elastic mouth pad) is abutted against the sampling position of the tree, the electric hand drill 9 is started, the electric hand drill is pushed forwards, the drill bit 20 gradually drills into the tree, the sample collector 1 is synchronously compressed and deeply penetrates into the cylinder body 21 of the telescopic mechanism 2, and the drilled wood chip sample 8 is guided into the sample collector 1 along with the drill bit 20. After sampling, the drill bit 20 is withdrawn, the electric hand drill 9 is closed, the sample collector 1 is removed, the front cover 12 and the rear cover 14 cover the front and rear ports of the sample collector 1, and the sample is sealed and stored.

Claims

1. A wood sampler comprises an electric hand drill (9), a drill bit (20), a sample collector (1) and a telescopic mechanism (2), wherein the drill bit (20) is arranged on a chuck (95) of the electric hand drill (9), the wood sampler is characterized in that the telescopic mechanism (2) comprises a cylinder body (21), the rear end of the cylinder body (21) is detachably connected with the front end of the electric hand drill (9), the sample collector (1) is sleeved in the cylinder body (21), and the sample collector and the cylinder body are in sliding fit; the drill bit (20) is positioned on the axis of the cylinder (21) and the sample collector (1); a spiral spring (23) of the telescopic mechanism (2) is positioned between the sample collector (1) and the electric hand drill (9); the front end opening of the sample collector (1) is a necking, and the rear end of the sample collector (1) is provided with a chip blocking hole (131); the drill bit (20) penetrates through a chip blocking hole (131) at the rear end of the sample collector (1).

2. The wood sampler according to claim 1, characterized in that the diameter of the chip blocking hole (131) at the rear end of the sample collector (1) is 3.0-5.0mm larger than the diameter of the drill bit (20).

3. The wood sampler according to claim 2, characterized in that the diameter of the chip blocking hole (131) at the rear end of the sample collector (1) is 3.5-4.5mm larger than the diameter of the drill bit (20).

4. A wood sampler according to claim 3, wherein the diameter of the chip blocking hole (131) at the rear end of the sample collector (1) is 4.0mm larger than the diameter of the drill bit (20).

5. A wood sampler according to claim 1 in which the front port of the sample collector (1) is in releasable sealing engagement with the front cover and the rear port of the sample collector (1) is in releasable sealing engagement with the rear cover.

6. The wood sampler according to claim 1, characterized in that the inside of the cylinder (21) is provided with a reducing step (211), the rear end of the coil spring (23) abuts against the step (211), the front end of the coil spring (23) is installed in a cavity of the spring cover (22), the diameter of a central hole at the bottom of the spring cover (22) is equal to or larger than the diameter of the chip blocking hole (131), the end face at the bottom of the spring cover (22) is in contact fit with the rear end of the collector (1), and the outer diameter of the spring cover (22) is in sliding fit with the inner diameter of the cylinder (21).

7. The wood sampler according to claim 1 or 6, characterized in that the rear end of the cylinder (21) is detachably connected with the front end of the electric hand drill (9), at least three radial screw holes (213) are arranged along the circumference of the rear end of the cylinder (21), and the radial screw holes (213) are provided with fastening bolts (3) for fastening the cylinder (21) and the electric hand drill (9) with each other, or the detachable connection is a threaded connection or a flange connection.

8. The wood sampler according to claim 1, characterized in that the sample collector (1) is a split structure, the chip blocking hole (131) is located in the center of the chip blocking cover (13), and the chip blocking cover (13) is detachably connected to the rear end of the sample collector (1).

9. The wood sampler according to claim 1, characterized in that the front end of the sample collector (1) is sleeved with an elastic mouth pad, and the sample collector (1) is detachably connected with the elastic mouth pad.

10. A wood sampler according to any one of claims 1 to 6 in which a bore depth alarm is provided on the wood sampler.

11. The wood sampler according to claim 10, wherein the bore depth alarm device comprises an axial slide groove (214) arranged at the front end of the cylinder (21), and a lug (4) arranged at the periphery of the sample collector (1), wherein the lower part of the lug (4) is in sliding fit with the axial slide groove (214); the upper part of the lug (4) is connected with a touch rod (5); the electric hand drill (9) is provided with a trigger switch (6) and a buzzer (7), and the rear end of the touch rod (5) is correspondingly matched with the trigger switch (6).