CN111289287A - Soil sampling device - Google Patents
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- CN111289287A CN111289287A CN202010140300.5A CN202010140300A CN111289287A CN 111289287 A CN111289287 A CN 111289287A CN 202010140300 A CN202010140300 A CN 202010140300A CN 111289287 A CN111289287 A CN 111289287A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/04—Devices for withdrawing samples in the solid state, e.g. by cutting
- G01N1/08—Devices for withdrawing samples in the solid state, e.g. by cutting involving an extracting tool, e.g. core bit
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- Sampling And Sample Adjustment (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The invention provides a soil sampling device, which comprises a sampling mechanism, wherein the sampling mechanism comprises a drill rod, more than two sampling boxes and a connecting rod transmission mechanism; more than two sampling boxes are arranged at intervals in the length direction of the drill rod and are arranged at intervals in the circumferential direction of the drill rod; the drill rod is provided with a groove for accommodating the sampling box; more than two sampling boxes synchronously extend out or retract into the groove under the driving of the connecting rod transmission mechanism, and are used for simultaneously taking more than two soil samples. This application is provided with a plurality of sampling boxes on the drilling rod, and the sampling box setting can obtain a plurality of soil samples simultaneously in not co-altitude and different week, when the sample, has improved sampling efficiency, and soil sample quantity increases simultaneously, and soil sampling is more accurate, has avoided the error that the accidental factor of single sample in the past leads to.
Description
Technical Field
The invention relates to the technical field of soil sampling, in particular to a soil sampling device and a method for collecting soil samples in the soil monitoring process of forests, grasslands, cultivated lands and the like.
Background
When monitoring soft soil quality such as forest, grassland or farmland, soil samples with set depth need to be collected regularly or irregularly for analysis. The existing soil sample collection mostly adopts a manual excavation mode, so that time and labor are wasted, and the efficiency is low.
Disclosure of Invention
The present invention aims to provide a soil sampling device to solve at least one of the above technical problems in the prior art.
In order to solve the technical problem, the invention provides a soil sampling device, which comprises a sampling mechanism, wherein the sampling mechanism comprises: the sampling device comprises a drill rod, more than two sampling boxes and a connecting rod transmission mechanism;
more than two sampling boxes are arranged at intervals in the length direction of the drill rod and are arranged at intervals in the circumferential direction of the drill rod;
the drill rod is provided with a groove for accommodating the sampling box; more than two sampling boxes synchronously extend out or retract into the groove under the driving of the connecting rod transmission mechanism, and are used for simultaneously taking more than two soil samples.
This application is provided with a plurality of sampling boxes on the drilling rod, and the sampling box setting can obtain a plurality of soil samples simultaneously in not co-altitude and different week, when the sample, has improved sampling efficiency, and soil sample quantity increases simultaneously, and soil sampling is more accurate, has avoided the error that the accidental factor of single sample in the past leads to.
Further, the connecting rod transmission mechanism comprises a parallelogram connecting rod mechanism, a supporting rod and a push rod;
the parallelogram link mechanism comprises a first connecting rod and a second connecting rod which are equal in length; one ends of the first connecting rod and the second connecting rod are hinged with the drill rod, and the other ends of the first connecting rod and the second connecting rod are hinged with the sampling box; the parallelogram link mechanism is used for ensuring that the opening direction (or the length direction) of the sampling box is always vertical to the drill rod;
one end of the supporting rod is hinged with the sampling box; the other end of the supporting rod is hinged with one end of the push rod; the push rod can be arranged in a guide hole in the drill rod in an axial sliding mode along the drill rod, and the other end of the push rod extends to the tail of the drill rod through the guide hole.
The sampling box extends out or returns back to the groove through the push-pull push rod and the supporting rod, and then soil sampling action is achieved.
Preferably, the head of the drill rod is provided with a drill bit part for drilling, the sampling box is arranged on the middle part of the drill rod through a parallelogram link mechanism and a support rod, one end of the push rod is connected with the support rod, and the other end of the push rod extends to the tail part of the drill rod through a guide hole arranged in the drill rod.
Furthermore, guide grooves are formed in the left side face and the right side face in the groove along the length direction of the drill rod, and the other end of the supporting rod is connected to the guide grooves in a sliding mode through a pin shaft.
Further, the sampling box also comprises a rake claw type cover body used for covering the opening of the sampling box; the rake claw type cover body is formed by assembling a first half body and a second half body which are oppositely arranged; the first half body is provided with a plurality of first rake claws, the second half body is provided with a plurality of second rake claws, and the first rake claws and the second rake claws are sequentially arranged in a staggered manner in the width direction;
in the length direction of the drill rod, the support rod and the first connecting rod are symmetrically arranged on the upper side and the lower side of the sampling box; the first half body is fixedly arranged on the extension part of the first connecting rod, and the second half body is fixedly arranged on the extension part of the supporting rod; in the process that the sampling box extends out of or retracts into the groove, the first connecting rod and the supporting rod swing relative to the sampling box, and then the first half body and the second half body are driven to open and close.
Specifically, in the process that the sampling box extends out of the groove, the first connecting rod and the supporting rod swing forward relative to the sampling box to drive the first half body and the second half body to open, the opening of the sampling box is opened, so that a soil sample falls into the sampling box, and in the process that the sampling box returns to the groove, the first connecting rod and the supporting rod swing reversely relative to the sampling box to further drive the first half body and the second half body to close, and the opening of the sampling box is sealed.
Furthermore, soil loosening claw parts (the soil loosening claw parts are pointed bulges arranged at included angles with the rake claws) are arranged at the tail ends of the first rake claw and the second rake claw and at the side departing from the drill rod. In the process that the sampling box extends out of the groove, the soil loosening claw part is used for loosening soil on the side wall of the drilled hole, and loosened soil falls into the sampling box through the first rake claw gap or the second rake claw gap.
After the claw portion that loosens the soil is set up, then need not take a sample in the sample box crowded soil to can avoid the sample box card in the drilling lateral wall, easily withdraw the sample box and take out whole device from drilling, and the effort of bracing piece and push rod when reducing the sample, when can easily realize the soil sample, improve the life of whole device, reduce the maintenance cost, improve sample efficiency.
Further, still include: the lifting device comprises a bracket, a lifting mechanism and a lifting frame; the lifting frame is arranged on the bracket in a manner of moving up and down through the lifting mechanism; the sampling mechanism is arranged on the lifting frame and moves up and down along with the lifting frame.
Further, the sampling mechanism further comprises: a sampling motor (preferably a stepping motor), a main sleeve, an auxiliary sleeve and a winding spring;
the main sleeve is fixedly connected to a power output shaft of the sampling motor;
the tail part of the upper end of the drill rod can be inserted into the main sleeve in a vertically sliding manner;
the auxiliary sleeve is rotatably sleeved outside the main sleeve and the drill rod;
the middle lower part of the excircle of the main sleeve is provided with an external thread section; the upper end in the auxiliary sleeve is provided with a ring platform which is inwards convex in the radial direction; the ring table is provided with an internal thread matched with the external thread section;
an upper limit structure and a lower limit structure are respectively arranged at the upper end and the lower end of the external thread section on the main sleeve;
under the action of no external force, the middle aperture of the winding spring is smaller than the outer diameter of the tail part of the drill rod, and the winding spring is arranged in the auxiliary sleeve and wound outside the tail part of the drill rod;
both ends of the coil spring include: a fixed end arranged at the lower end and a free end arranged at the upper end; the fixed end is fixedly connected with the auxiliary sleeve;
the lower end of the main sleeve is fixedly provided with an unlocking holding part; the lower end of the unlocking holding part is provided with a spiral wedge-shaped guide block;
the sampling motor rotates reversely, the main sleeve rotates reversely relative to the auxiliary sleeve, the wedge-shaped lead-in block is gradually wedged between the free end and the drill rod, the free end is lifted to force the middle aperture of the winding spring to be enlarged, and the drill rod is unlocked; the unlocking holding part is inserted between the free end and the drill rod along with the wedge-shaped guide-in block and is used for maintaining the unlocking state of the winding spring, and the drill rod, the winding spring and the auxiliary sleeve can rotate relatively and can move up and down relatively; after the upper end surface of the ring table is abutted against the upper limiting structure, the power output shaft of the sampling motor can drive the auxiliary sleeve to rotate reversely through the main sleeve; the lower end of the auxiliary sleeve is connected with the other end (upper end) of the push rod and is used for driving the push rod to move axially along the drill rod when the lifting frame moves up and down (at the moment, the drill rod and the winding spring are in an unlocking state);
the sampling motor rotates forwards, the main sleeve rotates forwards relative to the auxiliary sleeve, the unlocking holding part and the wedge-shaped guide block sequentially exit from the position between the free end and the drill rod, the winding spring is fixedly connected with the drill rod by virtue of the elastic force of the winding spring (the drill rod is tightly embraced by the winding spring), and the auxiliary sleeve can drive the winding spring and the drill rod to rotate forwards through the fixed end; after the lower end face of the ring table abuts against the lower limiting structure, the power output shaft of the sampling motor sequentially passes through the main sleeve, the auxiliary sleeve and the winding drum spring to drive the drill rod to rotate positively.
The drill rod further comprises a lantern ring and a connecting wing plate, wherein the lantern ring is sleeved on the drill rod in a vertically sliding manner; the lantern ring is connected with the lower end of the auxiliary sleeve through a thrust bearing (the lantern ring and the auxiliary sleeve can rotate relatively in the circumferential direction of the auxiliary sleeve; and the lantern ring and the auxiliary sleeve are relatively and fixedly connected in the axial direction of the auxiliary sleeve);
a strip-shaped groove communicated with the inside and the outside of the guide hole is axially arranged on the drill rod; the connecting wing plate can be inserted into the strip-shaped groove in a sliding mode, and the inner end and the outer end of the connecting wing plate are fixedly connected with the push rod and the lantern ring respectively.
Further, the lifting mechanism includes: the lifting motor, the transmission screw and the transmission nut; the transmission nut is fixedly connected with the lifting frame; the transmission screw rod is rotatably arranged on the bracket, and a power output shaft of the lifting motor is connected with the transmission screw rod. The lifting motor drives the lifting frame to move up and down sequentially through the transmission screw rod and the transmission nut.
Wherein, preferably, a guide structure for guiding the lifting frame when the lifting frame moves up and down is vertically arranged on the bracket. For example, a guide post and a guide groove are vertically arranged, and a guide hole matched with the guide post or a sliding block matched with the guide groove is arranged on the lifting frame.
Further, the device also comprises a controller (such as a CPU, a singlechip or a WeChat computer), and the controller is electrically connected with the lifting motor and the sampling motor respectively.
Further, the clamping device comprises a clamping assembly, wherein the clamping assembly is arranged at the middle lower end of the support and used for clamping and locking the drill rod. The clamping assembly can forcedly force the drill rod to stop rotating by clamping the drill rod when the drill rod and the winding spring are blocked and the wedge-shaped guide block cannot be inserted or pulled out, so that the conversion of an unlocking state or a locking state is smoothly completed.
Further, the clamping assembly includes: the clamping heads and the telescopic pieces (such as air cylinders, oil cylinders or electric telescopic rods) are symmetrically arranged on two sides of the drill rod; the clamping head can approach the drill rod under the driving of the telescopic piece, and further can tightly hold and lock the drill rod to prevent the drill rod from rotating and moving up and down; the clamping head is far away from the drill rods under the driving of the telescopic piece, and further the locking of the multiple drill rods can be released.
In addition, the lifting frame is provided with a limiting hole for limiting the auxiliary sleeve, and the auxiliary sleeve can be inserted into the limiting hole in a vertical sliding manner.
By adopting the technical scheme, the invention has the following beneficial effects:
the soil sampling device provided by the invention has higher automation degree, can automatically realize soil sampling according to a set mode, is time-saving and labor-saving, and has high efficiency.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic structural diagram of a drill pipe portion of a sampling mechanism provided in an embodiment of the present invention;
FIG. 2 is a side view of the sampling cartridge of FIG. 1;
FIG. 3 is a top view of the rake cover of the sample box of FIG. 2;
fig. 4 is an exploded view of the claw type cover;
FIG. 5 is a schematic structural diagram of a soil sampling device according to an embodiment of the present invention;
FIG. 6 is a partial schematic view of the threaded connection between the primary and secondary casings of FIG. 5;
FIG. 7 is a cross-sectional view of the wrap spring, drill rod and main casing joint;
FIG. 8 is an enlarged view of FIG. 5 at B;
fig. 9 is a schematic structural view of the clamping assembly.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The present invention will be further explained with reference to specific embodiments.
As shown in fig. 1, the present embodiment provides a soil sampling device, which includes a sampling mechanism 100, where the sampling mechanism 100 includes: a drill rod 110, more than two sampling boxes 120 and a connecting rod transmission mechanism 130;
more than two sampling boxes 120 are arranged at intervals in the length direction of the drill rod 110 and at intervals in the circumferential direction of the drill rod 110;
the drill rod 110 is provided with a groove 111 for accommodating the sampling box 120; the two or more sampling boxes 120 are driven by the link transmission mechanism 130 to synchronously extend out of or retract into the groove 111 for simultaneously taking two or more soil samples.
This application is provided with a plurality of sampling boxes 120 on drilling rod 110, and sampling box 120 sets up in not co-altitude and different week, when the sample, can acquire a plurality of soil samples simultaneously, has improved sampling efficiency, and soil sample quantity increases simultaneously, and soil sampling is more accurate, has avoided the error that the accidental factor of single sample in the past leads to.
The link transmission mechanism 130 includes a parallelogram link mechanism, a support rod 131 and a push rod 132;
the parallelogram linkage includes a first link 133 and a second link 134 of equal length; one end of the first connecting rod 133 and one end of the second connecting rod 134 are hinged with the drill rod 110, and the other end of the first connecting rod 133 and the other end of the second connecting rod 134 are hinged with the sampling box 120; the parallelogram linkage mechanism is used for ensuring that the opening direction (or the length direction) of the sampling box 120 is always vertical to the drill rod 110;
one end of the supporting rod 131 is hinged with the sampling box 120; the other end of the supporting rod 131 is hinged with one end of the push rod 132; the push rod 132 is slidably disposed in a guide hole inside the drill rod 110 along the axial direction of the drill rod 110, and the other end of the push rod 132 extends to the tail of the drill rod 110 through the guide hole.
The push rod 132 and the support rod 131 are pushed and pulled to extend or retract the sampling box 120 into the groove 111, so that soil sampling is realized.
Wherein, preferably, the head of the drill rod 110 is provided with a drill head for drilling, and the sampling box 120 is arranged on the middle part of the drill rod 110 through a parallelogram linkage and a support rod 131, one end of the push rod 132 is connected with the support rod 131, and the other end extends to the tail of the drill rod 110 through a guide hole 112 arranged in the drill rod 110.
In this embodiment, guide grooves 113 are formed on both left and right sides of the groove 111 along the length direction of the drill rod 110, and the other end of the support rod 131 is slidably coupled to the guide grooves via a pin.
As shown in fig. 1-4, the present embodiment further comprises a claw-type cover for covering the opening of the sampling box 120; the rake claw type cover body is formed by assembling a first half body 210 and a second half body 220 which are oppositely arranged; the first half body 210 is provided with a plurality of first rake claws 211, the second half body 220 is provided with a plurality of second rake claws 221, and the first rake claws and the second rake claws are sequentially arranged in a staggered manner in the width direction. In the length direction of the drill rod 110, the support rod 131 and the first connecting rod 133 are symmetrically arranged at the upper side and the lower side of the sampling box 120; the first half body is fixedly arranged on the extension of the first connecting rod 133, and the second half body is fixedly arranged on the extension of the supporting rod 131; during the process of extending or retracting the sampling box 120 into or out of the groove 111, the first connecting rod 133 and the supporting rod 131 swing and rotate relative to the sampling box 120, so as to drive the first half body and the second half body to open and close.
Specifically, when the sampling box 120 extends out of the groove 111, the first link 133 and the support rod 131 swing forward relative to the sampling box 120 to drive the first half body and the second half body to open, and open the opening of the sampling box 120, so that the soil sample falls into the sampling box 120, and when the sampling box 120 retracts into the groove 111, the first link 133 and the support rod 131 swing backward relative to the sampling box 120, so as to drive the first half body and the second half body to close, and cover the opening of the sampling box 120.
Soil loosening claw parts 201 (the soil loosening claw parts are pointed bulges arranged at included angles with the rake claws) are arranged at the tail ends of the first rake claw and the second rake claw and on the side departing from the drill rod 110. When the sampling box 120 extends out of the groove 111, the loosening claw part is used for loosening soil on the side wall of the drilled hole, and the loosened soil falls into the sampling box 120 through the first claw gap or the second claw gap.
After the claw portion that loosens the soil is set up, then need not take a sample in the soil is crowded to sample box 120 to can avoid sampling box 120 card in the drilling lateral wall, easily withdraw sampling box 120 and take out whole device from drilling, and bracing piece 131 and push rod 132's effort when reducing the sample, when can easily realize soil sampling, improve the life of whole device, reduce the maintenance cost, improve sample efficiency.
As shown in fig. 5, the present embodiment further includes: the support 10, the lifting mechanism 30 and the lifting frame 20; the lifting frame 20 is arranged on the bracket 10 in a way of moving up and down through a lifting mechanism; the sampling mechanism 100 is provided on the crane 20 to move up and down with the crane 20.
The sampling mechanism 100 further includes: a sampling motor 41 (preferably a stepper motor), a main bushing 42, a secondary bushing 43, and a wrap spring 44;
the main sleeve 42 is fixedly connected to the power output shaft of the sampling motor 41;
the tail part of the upper end of the drill rod 110 can be inserted into the main casing 42 in a vertically sliding manner;
the auxiliary sleeve 43 is rotatably sleeved outside the main sleeve 42 and the drill rod 110;
as shown in fig. 6 and 7, an external thread section 42a is provided on the middle and lower portion of the outer circumference of the main sleeve 42; the upper end in the auxiliary sleeve 43 is provided with a ring platform 43a which is inwards convex in the radial direction; the ring table is provided with an internal thread matched with the external thread section. An upper limit structure 42b and a lower limit structure 42c are respectively arranged at the upper end and the lower end of the external thread section on the main sleeve 42; under the action of no external force, the middle aperture of the winding spring 44 is smaller than the outer diameter of the tail part of the drill rod 110, and the winding spring 44 is arranged in the auxiliary sleeve 43 and is wound outside the tail part of the drill rod 110. Both ends of the coil spring 44 include: a fixed end disposed at the lower end and a free end 44a disposed at the upper end; the fixed end is fixedly connected with the sub-sleeve 43. An unlocking holding part 42d (specifically, a sleeve section) is fixedly arranged at the lower end of the main sleeve 42; the lower end of the unlock holding portion is provided with a wedge-shaped lead-in block 42e in a spiral shape.
The sampling motor 41 rotates reversely, the main sleeve 42 rotates reversely relative to the auxiliary sleeve 43, the wedge-shaped guide block 42e is gradually wedged between the free end 44a and the drill rod 110, the free end is lifted to force the middle aperture of the winding spring 44 to be enlarged, and the drill rod 110 is unlocked; the unlocking holding part 42c is inserted between the free end 44a and the drill rod 110 following the wedge-shaped guide block for maintaining the unlocking state of the coil spring 44, and the drill rod 110 is relatively rotatable and relatively movable up and down with respect to the coil spring 44 and the sub-sleeve 43; after the upper end surface of the ring table is abutted against the upper limiting structure, the power output shaft of the sampling motor 41 can drive the auxiliary sleeve 43 to rotate reversely through the main sleeve 42; the lower end of the auxiliary sleeve 43 is connected with the upper end of the push rod 132, and the auxiliary sleeve is used for driving the push rod 132 to axially move along the drill rod 110 when the lifting frame 20 moves up and down (at the moment, the drill rod 110 and the winding spring 44 are in an unlocking state); specifically, as shown in FIG. 8, the collar 70 is slidably mounted over the drill rod 110 up and down; the lantern ring 70 is connected with the lower end of the auxiliary sleeve 43 through a thrust bearing 71 (the lantern ring and the auxiliary sleeve 43 can rotate relatively in the circumferential direction of the auxiliary sleeve 43; the lantern ring and the auxiliary sleeve 43 are fixedly connected relatively in the axial direction of the auxiliary sleeve 43); a strip-shaped groove 114 communicated with the inside and the outside of the guide hole 112 is arranged on the drill rod 110 along the axial direction; the connecting wing plate 72 is slidably inserted into the strip-shaped groove 114, and the inner and outer ends of the connecting wing plate are fixedly connected with the push rod 132 and the collar 70 respectively.
When the sampling motor 41 rotates forwards, the main sleeve 42 rotates forwards relative to the auxiliary sleeve 43, the unlocking holding part and the wedge-shaped guide block sequentially exit from the position between the free end and the drill rod 110, the winding spring 44 is fixedly connected with the drill rod 110 by virtue of the elastic force of the winding spring 44 (the drill rod 110 is tightly held by the winding spring 44), and the auxiliary sleeve 43 can drive the winding spring 44 and the drill rod 110 to rotate forwards through the fixed end; after the lower end face of the ring table abuts against the lower limiting structure, the power output shaft of the sampling motor 41 drives the drill rod 110 to rotate forwards sequentially through the main sleeve 42, the auxiliary sleeve 43 and the drum spring, and therefore holes are formed in the soil through the drill rod.
As shown in fig. 5, the lifting mechanism 30 includes: a lifting motor 31, a transmission screw 33 and a transmission nut 32; the transmission nut is fixedly connected with the lifting frame 20; the transmission screw is rotatably arranged on the bracket 10, and a power output shaft of the lifting motor is connected with the transmission screw. The lifting motor drives the lifting frame 20 to move up and down through the transmission screw rod and the transmission nut in sequence.
Wherein, preferably, a guide structure for guiding the crane 20 when moving up and down is vertically arranged on the bracket 10. For example, a guide post and a guide groove are vertically arranged, and a guide hole matched with the guide post or a slide block matched with the guide groove is arranged on the lifting frame 20.
In addition, the embodiment further comprises a controller (such as a CPU, a single chip microcomputer or a microcomputer), and the controller is electrically connected with the lifting motor and the sampling motor 41 respectively. The controller is prior art and will not be described herein.
In the above technical solution, it is preferable to further include a clamping assembly 60, which is provided at the middle lower end of the support 10, for clamping the locking drill rod 110. The clamping assembly can forcibly force the drill rod 110 to stop rotating by clamping the drill rod 110 when the drill rod 110 and the coil spring 44 are jammed and the wedge-shaped lead-in block cannot be inserted or pulled out, so that the conversion of the unlocking state or the locking state can be smoothly completed. In addition, after the drill rod extends into soil to a set depth, the sampling motor reversely contacts the drill rod and a winding spring in a locking state, the drill rod is fixed through the clamping assembly, the lifting mechanism is started, the lifting frame, the main sleeve, the auxiliary sleeve, the connecting wing plate and the push rod move downwards, the sampling box is pushed out of the groove through the support rod, and soil is loosened by the aid of the rake claws and sampling is performed. The elevating system moves reversely, and crane, main sleeve pipe, vice sleeve pipe, connection pterygoid lamina, push rod rebound to return the recess with the sample box through the bracing piece, realize the seal up of soil sample.
As shown in fig. 9, the clamping assembly includes: the clamping head 62 and the telescopic part 61 (such as an air cylinder, an oil cylinder or an electric telescopic rod) are symmetrically arranged on two sides of the drill rod 110; the clamping head can be close to the drill rod 110 under the driving of the telescopic piece, and further can tightly hold and lock the drill rod 110 to prevent the drill rod 110 from rotating and moving up and down; the gripping head is driven by the telescoping member to move away from the drill pipe 110, thereby unlocking the plurality of drill pipes 110.
In addition, the crane 20 is preferably provided with a limit hole for limiting the sub-sleeve 43, and the sub-sleeve 43 is inserted into the limit hole in a vertically slidable manner.
The soil sampling device provided by the invention has higher automation degree, can automatically realize soil sampling according to a set mode, is time-saving and labor-saving, and has high efficiency.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. A soil sampling device, comprising a sampling mechanism, the sampling mechanism comprising: the sampling device comprises a drill rod, more than two sampling boxes and a connecting rod transmission mechanism;
more than two sampling boxes are arranged at intervals in the length direction of the drill rod and are arranged at intervals in the circumferential direction of the drill rod;
the drill rod is provided with a groove for accommodating the sampling box; more than two sampling boxes synchronously extend out or retract into the groove under the driving of the connecting rod transmission mechanism, and are used for simultaneously taking more than two soil samples.
2. The soil sampling device of claim 1, wherein the linkage mechanism comprises a parallelogram linkage, a support rod, and a push rod;
the parallelogram link mechanism comprises a first connecting rod and a second connecting rod which are equal in length; one ends of the first connecting rod and the second connecting rod are hinged with the drill rod, and the other ends of the first connecting rod and the second connecting rod are hinged with the sampling box; the parallelogram link mechanism is used for ensuring that the opening direction of the sampling box is always vertical to the drill rod;
one end of the supporting rod is hinged with the sampling box; the other end of the supporting rod is hinged with one end of the push rod; the push rod can be arranged in a guide hole in the drill rod in an axial sliding mode along the drill rod, and the other end of the push rod extends to the tail of the drill rod through the guide hole.
3. The soil sampling device of claim 2, wherein the drill head of the drill rod is provided with a drill head for drilling, the sampling box is arranged on the middle part of the drill rod through the parallelogram linkage mechanism and the support rod, one end of the push rod is connected with the support rod, and the other end of the push rod extends towards the tail part of the drill rod through a guide hole arranged in the drill rod.
4. The soil sampling device of claim 2, wherein guide grooves are formed in the left side surface and the right side surface of the groove along the length direction of the drill rod, and the other end of the support rod is slidably connected to the guide grooves through a pin shaft.
5. The soil sampling device of claim 3, further comprising a claw cover for covering the sampling box opening; the rake claw type cover body is formed by assembling a first half body and a second half body which are oppositely arranged; the first half body is provided with a plurality of first rake claws, the second half body is provided with a plurality of second rake claws, and the first rake claws and the second rake claws are sequentially arranged in a staggered manner in the width direction;
in the length direction of the drill rod, the support rod and the first connecting rod are symmetrically arranged on the upper side and the lower side of the sampling box; the first half body is fixedly arranged on the extension part of the first connecting rod, and the second half body is fixedly arranged on the extension part of the supporting rod; in the process that the sampling box extends out of or retracts into the groove, the first connecting rod and the supporting rod swing relative to the sampling box, and then the first half body and the second half body are driven to open and close.
6. Soil sampling device according to claim 5, wherein the ends of the first and second head and the side facing away from the drill rod are provided with scarification claws.
7. The soil sampling device of claim 1, further comprising: the lifting device comprises a bracket, a lifting mechanism and a lifting frame; the lifting frame is arranged on the bracket in a manner of moving up and down through the lifting mechanism; the sampling mechanism is arranged on the lifting frame and moves up and down along with the lifting frame.
8. The soil sampling device of claim 7, wherein the lifting mechanism comprises: the lifting motor, the transmission screw and the transmission nut; the transmission nut is fixedly connected with the lifting frame; the transmission screw rod is rotatably arranged on the bracket, and a power output shaft of the lifting motor is connected with the transmission screw rod.
9. The soil sampling device of claim 7, wherein the support is vertically provided with a guide structure for guiding the lifting frame when the lifting frame moves up and down.
10. The soil sampling device of claim 7, further comprising a clamping assembly disposed at a lower-middle end of the bracket for clamping locking the drill rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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