CN114705521A - Accurate preparation equipment of soil sample - Google Patents

Abstract

The invention discloses accurate soil sample manufacturing equipment which comprises a bottom plate, a case, a heavy hammer mechanism, a fixing frame assembly and a heavy hammer lifting and releasing mechanism, wherein an axial hole is formed in the center of a columnar compaction hammer of the heavy hammer mechanism, a heavy hammer guide rod is sleeved in the axial hole, the columnar compaction hammer can lift and slide along the heavy hammer guide rod, a top pressing bottom plate is fixed at the bottom of the heavy hammer guide rod, a compaction cylinder is arranged on the upper side of the bottom plate, an auxiliary guide sleeve is sleeved above the compaction cylinder in a matching manner, stabilizing plates on two sides and the fixing frame assembly are in a constraint relationship, the top pressing bottom plate is positioned in an inner cavity of the auxiliary guide sleeve, the heavy hammer lifting and releasing mechanism is used for driving the columnar compaction hammer to lift and release, and the columnar compaction hammer is used for applying impact on the top pressing bottom plate. The device solves the problems of angle, force and the like in sample preparation, greatly shortens labor power and time, and facilitates the preparation of the soil sample.

Description

Accurate preparation equipment of soil sample

Technical Field

The invention belongs to the technical field of soil compaction test equipment, and particularly relates to accurate soil sample manufacturing equipment.

Background

When the geotechnical test is carried out indoors, a triaxial test sample is prepared, a sample striker is needed to be used for preparing a soil sample, the existing soil sample preparation equipment comprises the sample striker and a saturator, and the sample striker comprises a lantern ring, a positioning screw, a guide rod, a striker, a bottom plate, a sleeve, a sample striker and a base. There are inevitable problems in actual operation. In the experiment, when the hammer is lifted to reach the height of the lantern ring, the free falling body falls after the hammer collides with the lantern ring, but in actual operation, the non-uniformity of each layer of soil sample can be caused due to the fact that the hammer is lifted manually at different speeds, and the compaction degree is different. Secondly, when the guide rod of the compaction device is held by hand, the guide rod cannot be perpendicular to the ground due to the angle or impact of a hammer, so that the soil sample is not uniform and the cross section of the soil sample is not flat during sample forming. And when the last layer of soil body is impacted, the soil body is often higher than the impact sample cylinder, the sleeve is used for increasing and adding soil, and the sleeve is not fixed in contact with the saturator, so that the sleeve deviates after being impacted, and the height of the soil sample is lower than that of the standard test piece. The speed for preparing the manual workpiece of the soil sample is slow and uneven, so that the test data has larger deviation.

The problems of compaction degree and the like of each layer of a sample caused by different force and angle cannot be avoided when the existing compaction device is used for sample preparation. The problems that data are unreasonable and are deviated from ideal values and the like often occur in the test of samples. The imprecise test also tends to result in different numbers of hits per layer. A plurality of people prepare the soil sample at the same time, so that the deviation is increased easily, when only one person prepares the soil sample, the preparation time can be greatly prolonged, the moisture content in the mixed soil body can be changed in a long time, and the adverse effect on the qualitative research on the moisture content change can be generated. The existing impact device has large sample preparation time deviation, which is often unavoidable, and has great influence on experimental results.

Based on this, it is necessary to research a soil sample precision manufacturing device.

Disclosure of Invention

Aiming at the defects and problems of sample preparation of the existing compaction device, the invention provides the accurate soil sample preparation equipment, which effectively solves the problems of unavoidable angle, force, time and the like in the compaction process.

The technical scheme for solving the technical problem is as follows: the device mainly comprises a bottom plate, a case containing a drive, a heavy hammer mechanism, a fixing frame assembly, a stabilizing frame assembly, a heavy hammer lifting and releasing mechanism and the like. Wherein, the horizontal bottom plate is fixed with the bottom of the vertical chassis outer frame, the weight mechanism comprises a weight guide rod, a columnar compaction hammer and a top pressing bottom plate, wherein the center of the columnar compaction hammer comprises an axial hole, the weight guide rod is sleeved in the axial hole, so that the columnar compaction hammer can slide up and down along the weight guide rod, the top of the weight guide rod is sleeved in a guide hole arranged at the upper part of the chassis, the top pressing bottom plate is fixed at the bottom of the weight guide rod, the fixing frame component is fixed with the bottom plate together, the compaction cylinder is arranged at the upper side of the bottom plate, the stabilizing frame component comprises an auxiliary guide sleeve and stabilizing plates, the two stabilizing plates are symmetrically fixed at two sides of the auxiliary guide sleeve, the auxiliary guide sleeve is sleeved above the compaction cylinder in a matching way, the stabilizing plates at two sides are in a constraint relation with the fixing frame component, and the weight guide rod of the weight mechanism is positioned right above the compaction cylinder, the bottom pressing plates at the lower end and the bottom of the heavy hammer guide rod are positioned in the inner cavity of the auxiliary guide sleeve, the heavy hammer lifting and releasing mechanism is used for driving the columnar compaction hammer to lift and release upwards, and the columnar compaction hammer is used for applying impact to the bottom pressing plates.

The mechanism for driving the weight lifting and releasing mechanism to lift is a circular driving mechanism, an upper chain wheel is installed on the upper portion of the front side face of the case, a lower chain wheel is installed on the lower portion of the front side face of the case, chains are wound on the upper chain wheel and the lower chain wheel, the chains are in transmission connection with the weight lifting and releasing mechanism, and when the chains perform lifting movement, the chains can drive the fixing frame of the weight lifting and releasing mechanism to perform lifting movement.

The fixing frame assembly comprises two single assemblies, each single assembly comprises a rectangular pressing plate, fixing nails, a bottom plate horizontal steel plate, bolts and butterfly-shaped claw nuts, the bolts of each single assembly are vertically fixed on the upper side of the bottom plate horizontal steel plate, the two rectangular pressing plates of each single assembly are fixedly connected with the bottom plate through the fixing nails respectively, and the two rectangular pressing plates are respectively pressed at two ends of the bottom plate horizontal steel plate.

The stabilizing frame assembly comprises an auxiliary guide sleeve and stabilizing plates, the two stabilizing plates are symmetrically fixed on two sides of the auxiliary guide sleeve, and the auxiliary guide sleeve is sleeved above the compaction cylinder in a matching manner.

The front and rear sides of the two stabilizing plates are respectively provided with a stabilizing clamping groove, the auxiliary guide sleeve carries the stabilizing plates on the two sides to rotate, the stabilizing clamping grooves on the two sides are matched and sleeved on the outer sides of bolts on the two sides, butterfly-shaped claw nuts are installed on the thread sections at the tops of the bolts and can be pressed on the upper sides of the corresponding stabilizing plates to press and fix the stabilizing plates on the two sides, and the auxiliary guide sleeve is sleeved and pressed above the compaction cylinder to fix the position of the compaction cylinder.

The heavy hammer mechanism comprises a heavy hammer guide rod, a columnar compaction hammer and a top pressing bottom plate, wherein the center of the columnar compaction hammer comprises an axial hole, the heavy hammer guide rod is sleeved in the axial hole, so that the columnar compaction hammer can lift and slide along the heavy hammer guide rod, a suspension rod is fixed on the front side of the upper part of the case, and a vertical guide hole is formed in the upper side of the suspension rod. And sleeving the top of the heavy hammer guide rod in a guide hole arranged at the upper part of the case.

The heavy hammer lifting and releasing mechanism comprises a fixed frame consisting of an upper horizontal steel plate, a lower horizontal steel plate and a vertical plate, wherein an upper positioning hole is formed in the center of the upper horizontal steel plate, a lower positioning hole is formed in the center of the lower horizontal steel plate, a releasing mechanism guide post is fixed between a suspension rod on the upper portion of the case and a bottom plate, the releasing mechanism guide post penetrates through the upper positioning hole and the lower positioning hole simultaneously, so that the fixed frame of the heavy hammer lifting and releasing mechanism can be supported by the releasing mechanism guide post and can move up and down along the releasing mechanism guide post, releasing wedge blocks are fixed on two sides of the upper portion of the releasing mechanism guide post respectively, the upper side and the lower side of each releasing wedge block on the two sides respectively comprise a guide inclined surface, the releasing wedge blocks on the two sides gradually converge from the inner side to the outer side, the hole patterns of the upper positioning hole and the lower positioning hole are designed to be consistent with the shapes of the guide post and the wedge blocks on the two sides, so that the upper positioning hole and the lower positioning hole can span over the wedge blocks on the two sides, however, the guide post can only slide in the middle rectangular area of the upper positioning hole and the lower positioning hole, so that the fixing frame of the heavy hammer lifting and releasing mechanism can slide on the guide post along the vertical lifting direction and can cross the wedge blocks on the two sides; there is the fixing base at the middle part of side around last horizontal steel sheet respectively, installs horizontal sliding rod in the front and back fixing base, has about two self-adaptations respectively in last horizontal steel sheet upper portion both sides and grabs the sword, every self-adaptation is grabbed the sword upside and is fixed with the stand pipe respectively, horizontal sliding rod run through and install in the stand pipe inboard, can freely slide to control two self-adaptations and grab the sword and can inwards or outwards translate at last horizontal steel sheet upside the horizontal sliding rod outside cover is equipped with the extension spring, and the inner of every extension spring is connected in corresponding fixing base, and the outer end is connected in corresponding stand pipe, thereby makes both sides self-adaptation grab the sword, is in the state of inside shrink under natural state.

The two sides of the upper horizontal steel plate and the lower horizontal steel plate of the heavy hammer lifting and releasing mechanism are respectively provided with a guide hole, guide posts are sleeved in the guide holes corresponding to the upper part and the lower part in a matching mode, a spring support is arranged in the middle of each guide post, a vertical spring is sleeved between the spring support and the lower surface of the upper horizontal steel plate, the upper end of each guide post is provided with an end cap, and the diameter of each end cap is larger than that of the guide rod body. When the weight lifting release mechanism moves upwards and approaches the release wedge block, the weight lifting release mechanism is supported by the upper or lower guide inclined surfaces of the release wedge block, so that the self-adaptive graspers on the two sides begin to expand outwards. After crossing and releasing the wedge-shaped block, the self-adaptive grab knives on the two sides automatically contract inwards. The two states of expansion and contraction correspond to the release and capture of the columnar compaction hammer.

The lateral surface of the columnar compaction hammer is provided with a series of hammer side annular grooves, and after the self-adaptive gripping knives on the two sides automatically contract inwards, the self-adaptive gripping knives can be clamped in the corresponding hammer side annular grooves, so that when the heavy hammer lifts the release mechanism to move upwards, the hammer side annular grooves can be driven to move upwards together, until the self-adaptive gripping knives on the two sides contact with the release wedge block, the self-adaptive gripping knives on the two sides are supported by the lower guide inclined plane of the release wedge block to start to expand outwards to be separated from the side annular grooves, and the columnar compaction hammer is released.

The self-adaptive griping knives on the two sides are respectively provided with an adjusting flat hole, and the guide posts are respectively sleeved in the corresponding adjusting flat holes. Meanwhile, matching ejector blocks are respectively arranged on the outer sides of the self-adaptive grabbing knives on the two sides, and the matching ejector blocks are located on the outer sides of the corresponding guide columns.

Therefore, when the heavy hammer lifting release mechanism is located at the bottom position, the lower ends of the guide posts on the two sides are supported on the upper surface of the bottom plate, so that the guide posts move upwards, the end caps at the upper ends of the guide posts move upwards, and the heights of the end caps are higher than the matching top blocks on the two sides after the end caps move upwards. Because the self-adaptive grab knives on the two sides are in an inward contraction state, the matching top blocks on the two sides also move inwards along with the adjusting plates, so that the matching top blocks on the two sides are positioned below the end caps (at the moment, the adjusting plates on the two sides contract inwards to clamp the side ring grooves of the heavy hammer), and the guide posts on the two sides cannot fall completely.

The invention has the beneficial effects that: the device is mainly used for preparing the soil sample in the indoor test and aims at solving the inevitable problem of the existing compactor in the actual operation. The design further solves the problems of angle, force and the like in sample preparation, greatly shortens labor power and time, and facilitates the preparation of the soil sample. Through grabbing the sword and promoting the compaction hammer, can realize when mentioning the drive hammer and reach the lantern ring height, with lantern ring collision back free fall whereabouts, the speed difference of avoiding manual mentioning the compaction hammer can cause the inhomogeneity of every layer of soil sample, lead to the compactness difference, simultaneously because the guide arm is perpendicular with ground all the time, also caused the guide arm can not be perpendicular with ground because of the impact of angle or drive hammer when having avoided manual operation, cause the uneven cross-section unevenness of soil sample when the soil sample is inhomogeneous and the appearance of formation. The sleeve with hit solid section of thick bamboo zonulae occludens, because of sleeve and saturator contact do not have fixedly when having avoided manual operation, the sleeve skew behind the hammering leads to the height of soil sample to be less than standard test piece. The control console controls the compaction times, avoids too many and too few manual compaction times, greatly reduces the sample preparation manpower, solves the problems of low and uneven speed of manual products, and avoids larger deviation of test data.

In one embodiment, the adaptive grabbing knives on both sides of the weight lifting and releasing mechanism are driven by the corresponding tension springs to be in an inward contraction state in a natural state, but the adaptive grabbing knives on both sides have two different expansion degrees when being expanded, namely, two matched ejecting blocks on both sides are positioned below the corresponding end caps or positioned on the outer side surfaces of the corresponding end caps. When the two-side matching top blocks are positioned below the corresponding end caps, the two-side matching plates clamp the columnar compaction hammer, and when the two-side matching top blocks are positioned on the outer side surfaces of the corresponding end caps, the two sides match the clamping plates to release the columnar compaction hammer.

The scheme of the invention comprises that the chain is in transmission connection with the heavy hammer lifting and releasing mechanism, and the chain can drive the fixing frame of the heavy hammer lifting and releasing mechanism to move up and down when moving up and down. The continuous rotation of the chain can drive the heavy hammer to lift the fixing frame of the releasing mechanism to move up and down, and the heavy hammer and the fixing frame are sequentially circulated in a reciprocating mode. The reciprocating lifting motion of the heavy hammer lifting and releasing mechanism can drive the columnar compaction hammer to repeatedly impact downwards to jack the bottom plate so as to compact the soil sample in the compaction barrel.

The scheme of the invention comprises the steps that a mechanical diaphragm is used for locking the heavy hammer guide rod, and after the heavy hammer guide rod is locked, the lifting handle is lifted upwards or moved downwards, so that the heavy hammer guide rod, the columnar compaction hammer at the lower end of the heavy hammer guide rod and the top pressing bottom plate can be driven to move upwards or downwards.

The technical scheme includes that a linkage mechanism is arranged between the hand brake rod and the mechanical aperture, so that when the hand brake rod approaches one side of the lifting handle, the mechanical aperture can be driven to act, and the counterweight guide rod is locked or released.

Drawings

Fig. 1 is a perspective view of the present invention.

Fig. 2 is a schematic view of the lift drive mechanism of fig. 1.

Fig. 3 is a front view of fig. 1.

Fig. 4 is a left side view of fig. 1.

FIG. 5 is a diagram of the relationship between the weight lifting release mechanism and the guide post.

FIG. 6 is a schematic diagram of the weight lifting and releasing mechanism.

FIG. 7 is a diagram of the relationship between the weight mechanism and the stabilizer bar assembly.

Fig. 8 is a view showing a fixed relationship between the bracket assembly and the base plate.

FIG. 9 is a top view of the stabilizer assembly.

Fig. 10 is a side view of the hand drive mechanism.

Fig. 11 is a side view of a mount assembly.

Fig. 12 is a top view of the mechanical diaphragm.

Fig. 13 is a top view of fig. 7.

Fig. 14 is a bottom view of fig. 7.

Fig. 15 is a flowchart of the operation of the device system.

Reference numbers in the figures: the device comprises a bottom plate 1, a case 2, a weight mechanism 3, a positioning auxiliary frame 4, a fixed frame assembly 5, a stabilizing frame assembly 6, a weight lifting release mechanism 7, a circulating drive mechanism 8, a hand drive mechanism 9, a control plate 10, a weight guide rod 11, a release mechanism guide post 12, an auxiliary guide sleeve 13, a compacting cylinder 14, an upper chain wheel 15, a lower chain wheel 16, a chain 17, a suspension rod 18, a release wedge block 19, an upper horizontal steel plate 20, a lower horizontal steel plate 21, a vertical plate 22, a guide channel 23, a roller 24, an adaptive grabbing knife 25, an adjusting flat hole 26, a matching top block 27, a guide post 28, a guide hole 29, a spring support 30, a vertical spring 31, an end cap 32, a cross slide rod 33, a tension spring 34, a fixed seat 35, a guide pipe 36, an upper positioning hole 37, a lower positioning hole 38, a columnar compacting hammer 39, a weight side ring groove 40, a top pressure bottom plate 41, a stabilizing plate 42, a stabilizing plate 43 and a rectangular clamp groove 44, the device comprises fixing nails 45, a bottom plate horizontal steel plate 46, bolts 47, butterfly goat's horn nuts 48, swing guide rods 49, a lifting handle 50, a hand brake sliding sleeve 51, a hand brake return spring 52, a brake pipe 53, a mechanical diaphragm 54, a longitudinal suspension 55, a vertical rail 56, a hand brake rod 57, a lock shaft hole 58, a lock shaft rectangular pressing plate 59, a vertical roller 60, a rotating shaft 61, an oblique sliding shaft 62, a brake wire 63, a brake wire through hole 64, a brake wire fixing end 65 and a brake wire return spring 66.

Detailed Description

The invention is further illustrated with reference to the following figures and examples.

Example 1: the embodiment aims at providing accurate preparation equipment of soil sample, mainly used soil sample preparation of geotechnical test field test. In the existing compaction device, when the compaction hammer is lifted to collide with the sleeve ring at different speeds and the weight guide rod of the compaction device is held by hands, the weight guide rod cannot be perpendicular to the ground due to the angle or the impact of the compaction hammer, so that the soil sample on each layer is uneven, the compaction degree is different and the section of the soil sample is uneven. When hitting the appearance because of sleeve and saturator contact not fixed, the sleeve skew behind the hammering leads to the height of soil sample to be less than standard test piece. The speed for preparing the manual workpiece of the soil sample is slow and uneven, so that the test data has larger deviation. The problems that data are unreasonable and deviate from ideal values and the like often occur in the test of samples. Based on this, this embodiment is through the setting to mechanical self-adaptation grab sword, then solved as far as possible and hit angle and initial and the control of speed in real, simultaneously because mechanical accuse number for every layer of soil has the same degree of compaction can the accuracy of experimental data.

As shown in fig. 1, the soil sample precision manufacturing apparatus mainly includes a bottom plate 1, a machine case 2, a weight mechanism 3, a positioning auxiliary frame 4, a fixing frame assembly 5, a stabilizing frame assembly 6, a weight lifting and releasing mechanism 7, a hand driving mechanism 9, and the like.

In fig. 1, a horizontal bottom plate 1 is fixed with the bottom of an outer frame of a vertical case 2, an enlarged view of the bottom plate is shown in fig. 8, a series of fixing holes are uniformly distributed on the upper side of the bottom plate, and a fixing frame assembly 5 is installed with the corresponding fixing holes. Specifically, the fixing frame assembly 5 includes two single assemblies, each single assembly includes a rectangular pressing plate 44, a fixing nail 45, a bottom plate horizontal steel plate 46, a bolt 47 and a butterfly cleat nut 48, as shown in fig. 8, the bolt 47 of each single assembly is vertically fixed on the upper side of the bottom plate horizontal steel plate 46, and the two rectangular pressing plates 44 of each single assembly are respectively fixedly connected with the bottom plate 1 through a plurality of fixing nails 45. And the two rectangular pressing plates 44 are respectively pressed against two ends of the bottom plate horizontal steel plate 46. Thus, the floor horizontal steel plate 46 can be appropriately adjusted in the left-right and front-rear positions after loosening the respective fixing nails 45, and the position of the floor horizontal steel plate 46 is also locked after locking the fixing nails 45. The upper part of the bolt is provided with a thread section, and a butterfly claw nut 48 is sleeved on the thread section. The two monomer assemblies are respectively adjusted before being fixed, so that two bolts corresponding to the two monomer assemblies keep a proper distance.

As shown in fig. 1 and 3, the compaction cylinder 14 is placed on the upper side of the base plate 1 between the two bolts 47.

As shown in fig. 7, the stabilizer assembly 6 includes an auxiliary guide sleeve 13 and two stabilizer plates 42, the two stabilizer plates 42 are symmetrically fixed on both sides of the auxiliary guide sleeve 13, and the auxiliary guide sleeve 13 is fittingly sleeved above the compaction cylinder 14.

The two side stabilizing plates 42 establish a constraint relation with the fixing frame assembly 5, and specifically, stabilizing clamping grooves 43 are respectively arranged on the front side and the rear side of the two stabilizing plates 42, as shown in fig. 7. The auxiliary guide sleeve 13 is rotated to carry the two side stabilizing plates 42 to rotate, so that the two side stabilizing clamping grooves 43 are sleeved outside the two side bolts 47 in a matching mode. The corresponding bowman's horn nuts 48 are then screwed down so that each bowman's horn nut can be pressed against the upper side of the corresponding stabilising plate, pressing against and securing the stabilising plates on both sides, as shown in figure 1. Based on this constraint relationship, the position of the auxiliary guide sleeve 13 is fixed, and the auxiliary guide sleeve 13 is fitted over and pressed against the upper side of the compaction cylinder 14 to fix the position of the compaction cylinder.

The weight mechanism 3 shown in FIG. 7 includes a weight guide rod 11, a columnar compaction weight 39 and a top pressing plate 41. The center of the columnar compaction hammer 39 has an axial hole, and the weight guide rod 11 is sleeved in the axial hole, so that the columnar compaction hammer 39 can lift and slide along the weight guide rod 11. As shown in fig. 2, a suspension rod 18 is fixed to the front side of the upper portion of the cabinet, and a vertical guide hole 67 is formed in the upper side thereof. The top of the weight guide rod 11 is sleeved in a guide hole 67 arranged at the upper part of the case.

The weight guide rod 11 of the weight mechanism 3 is located right above the compaction cylinder 14, and during operation, the bottom pressing plate 41 at the lower end and bottom of the weight guide rod 11 is located in the inner cavity of the auxiliary guide sleeve 13. The weight lifting and releasing mechanism 7 is used for driving the columnar compaction hammer 39 to lift and release upwards, the columnar compaction hammer 39 is used for applying impact to the top pressing bottom plate 41, and after the columnar compaction hammer 39 falls down, the lower part of the columnar compaction hammer enters the auxiliary guide sleeve 13 to impact the top pressing bottom plate 41.

The weight lifting and releasing mechanism 7, as shown in FIG. 6, includes a fixing frame composed of an upper horizontal steel plate 20, a lower horizontal steel plate 21 and a vertical plate 22, as shown in FIGS. 13 and 14, an upper positioning hole 37 is formed at the center of the upper horizontal steel plate 20, and a lower positioning hole 38 is formed at the center of the lower horizontal steel plate 21. As shown in fig. 1 and 5, a release mechanism guide post 12 is fixed between the upper suspension rod 18 of the case and the bottom plate 1, and the release mechanism guide post 12 penetrates through the upper positioning hole 37 and the lower positioning hole 38 at the same time, so that the fixing frame of the weight lifting release mechanism 7 can be supported by the release mechanism guide post 12 to move up and down along the release mechanism guide post 12.

In fig. 5, release wedge blocks 19 are fixed on both sides of the upper portion of the release mechanism guide post 12, and the upper and lower sides of the release wedge blocks 19 on both sides include guide slopes, and the release wedge blocks 19 on both sides gradually converge from the inside to the outside. The hole patterns of the upper positioning hole 37 and the lower positioning hole 38 are designed to be in conformity with the shapes of the guide post and the two-side wedge blocks, so that the upper positioning hole 37 and the lower positioning hole 38 can straddle the two-side wedge blocks, but the guide post can slide only in the middle rectangular region of the upper positioning hole 37 and the lower positioning hole 38. Therefore, the fixing frame of the heavy hammer lifting release mechanism 7 can not only vertically lift and slide on the guide post, but also stride over the wedge blocks on the two sides.

As shown in fig. 6, the weight lifting and releasing mechanism 7 has guide holes 29 respectively formed on both sides of the upper horizontal steel plate 20 and the lower horizontal steel plate 21, guide posts 28 are respectively fitted in the corresponding upper and lower guide holes, a spring support 30 is disposed in the middle of the guide posts 28, a vertical spring 31 is fitted between the spring support 30 and the lower surface of the upper horizontal steel plate 20, an end cap 32 is disposed at the upper end of the guide post, and the diameter of the end cap is greater than that of the guide rod body.

The middle parts of the front side and the rear side of the upper horizontal steel plate are respectively provided with a fixed seat 35, a transverse sliding rod 33 is installed in the front fixed seat and the rear fixed seat, the two sides of the upper part of the upper horizontal steel plate are respectively provided with a left self-adaptive grab knife 25 and a right self-adaptive grab knife 25, the upper side of each self-adaptive grab knife 25 is respectively fixed with a guide pipe 36, and the transverse sliding rod 33 penetrates through the guide pipe 36 and is installed on the inner side of the guide pipe 36 and can freely slide. Thus, the left and right adaptive graspers 25 can translate laterally inward or outward on the upper horizontal steel plate 20. Furthermore, tension springs 34 are sleeved outside the transverse sliding rod 33, the inner end of each tension spring is connected to a corresponding fixed seat 35, and the outer end of each tension spring is connected to a corresponding guide tube 36. Thereby leading the self-adaptive grabbing knives 25 on the two sides to be in an inward contraction state in a natural state.

When the weight lifting release mechanism 7 moves upwards, the weight lifting release mechanism is supported by the upper or lower guide inclined planes of the release wedge block 19 when approaching the release wedge block 19, so that the two side self-adaptive grapple blades 25 start to spread outwards. After crossing the release wedge block 19, the two-side self-adaptive grab blades 25 automatically contract inwards. The two states of expansion and contraction correspond to the release and grasping of the cylindrical compaction hammer 39.

As shown in fig. 7, a series of heavy hammer side ring grooves 40 are formed on the side surface of the columnar compaction hammer 39, and after the two side adaptive griping blades 25 automatically contract inwards, the heavy hammer side ring grooves 40 can be clamped and fixed in the corresponding heavy hammer side ring grooves 40, so that when the weight lifting and releasing mechanism 7 moves upwards, the weight side ring grooves 40 can be driven to move upwards together, until the weight lifting and releasing mechanism contacts with the releasing wedge block 19, the two side adaptive griping blades 25 are supported by the lower guide inclined surface of the releasing wedge block 19 to start to expand outwards to separate from the side ring grooves, and the columnar compaction hammer 39 is released.

As shown in fig. 6, the two side adaptive griping blades 25 are respectively provided with an adjusting flat hole 26, and the guide posts 28 are respectively sleeved in the corresponding adjusting flat holes 26. Meanwhile, the outer sides of the two side self-adaptive grab knives 25 are respectively provided with matching top blocks 27, and each matching top block 27 is positioned at the outer side of the corresponding guide column 28.

Thus, when the weight lifting release mechanism 7 is at the bottom position, the lower ends of the two side guiding studs 28 are supported on the upper surface of the bottom plate 1, so that the guiding studs move upward, and the end caps 32 at the upper ends of the guiding studs move upward, and the height of the end caps 32 is higher than that of the two side matching top blocks 27 after the upward movement. Since the two-sided self-adaptive grab 25 is in the inward-contracting state, the two-sided matching top blocks move inward along with the adjusting plates, so that the two-sided matching top blocks 27 are located below the end caps 32 (at this time, the two-sided adjusting plates contract inward to clamp the side ring grooves of the weight), and the two-sided guide posts 28 cannot fall completely.

When the weight lifting release mechanism 7 moves upwards to contact the release wedge block 19, the adaptive grabbing knives 25 on two sides begin to spread outwards to release the columnar tamping hammer 39, and the matching top blocks 27 on two sides also spread outwards at the moment, so that the end cap 32 on the upper end of the guide column is released. So that the both-side guide posts 28 fall (in this case, completely), i.e., the both-side end caps 32 are in contact with the surfaces of the respective regulating plates and are supported at the inner sides of the respective fitting top blocks, so that the both-side regulating plates have the maximum opening degree.

This state is not changed after the weight lift release mechanism 7 crosses the release wedge 19.

In the process of returning, the weight lifting release mechanism 7 moves from top to bottom, and near the bottom position, the lower ends of the two side guiding posts 28 are supported on the upper side of the bottom plate 1, so that the guiding posts move upward, and the end caps 32 at the upper ends of the guiding posts move upward, and the height of the end caps 32 is higher than the matching top blocks 27 at the two sides after the end caps 32 move upward. At this time, the two side adaptive griping blades 25 will further contract inwards, and the contraction is just used for clamping the weight side ring groove 40 of the columnar compaction hammer.

Based on the above structural features, it can be seen that the two-sided adaptive grabbing knives 25 are driven by the corresponding tension springs to be in an inward contraction state in a natural state, but the two-sided adaptive grabbing knives 25 have two different expansion degrees when being expanded, that is, the two-sided matching ejector blocks 27 are located below the corresponding end caps 32 or located at the outer sides thereof. When the two-side matching top blocks 27 are located below the corresponding end caps, the two-side matching plates clamp the columnar compaction hammer, and when the two-side matching top blocks 27 are located on the outer side faces of the corresponding end caps, the two-side matching clamping plates release the columnar compaction hammer.

The present embodiment further includes a mechanism for driving the weight lifting release mechanism 7 to lift, and a hand driving mechanism 9 for moving the lifting weight guide rod 11 upward. The lifting driving mechanism has various implementation manners, for example, the heavy punch lifting releasing mechanism 7 is driven to perform upgrading movement by an electric push rod, an air cylinder or a lifting rope.

Example 2: on the basis of embodiment 1, a cyclic driving mechanism as shown in fig. 2 is used as the mechanism for driving the weight lifting and releasing mechanism 7 to ascend and descend. It can be seen that an upper chain wheel 15 is mounted on the upper portion of the front side of the chassis, a lower chain wheel 16 is mounted on the lower portion of the front side of the chassis, and a chain 17 is wound on the upper chain wheel 15 and the lower chain wheel 16 (the manner of mounting the upper and lower chain wheels and winding the toothed belt is not excluded). The chain 17 is in transmission connection with the weight lifting and releasing mechanism 7, and when the chain 17 performs lifting motion, the fixing frame of the weight lifting and releasing mechanism 7 can be driven to perform lifting motion.

Example 3: in addition to embodiment 2, as shown in fig. 6, a guide channel 23 is further added on the rear side of the fixing frame, the guide channel 23 is a channel composed of two parallel plates, a roller 24 is sleeved on the inner side of the guide channel 23, and the inner shaft end of the roller 24 is fixed with one chain shaft of the chain. Therefore, the chain 17 can realize circular rotation, and the roller 24 is driven to move up and down and simultaneously rolls back and forth in the guide channel 23. Namely: when the roller 24 is located at the right side of the chain and moves upwards, the roller pushes the guide channel to enable the fixing frame to ascend integrally, when the roller is located at the top of the chain and moves leftwards, the roller rolls leftwards in the guide channel, when the roller is located at the left side of the chain and moves downwards, the roller carries the guide channel to enable the whole fixing frame to move downwards, and when the roller is located at the bottom of the chain and moves rightwards, the roller rolls rightwards in the guide channel. Therefore, the continuous rotation of the chain can drive the heavy hammer lifting release mechanism 7 to move up and down, and the continuous rotation of the chain can sequentially reciprocate. The reciprocating lifting motion of the weight lifting and releasing mechanism 7 can drive the columnar compaction hammer to repeatedly impact downwards to press the bottom plate 41, so as to compact the soil sample in the compaction barrel.

Since the upper positioning hole 37 and the lower positioning hole 38 have the same shape as shown in fig. 13 and 14, in the present embodiment, in the returning process, the lower positioning hole 38 on the lower side crosses the release wedge 19 first, then the upper positioning hole 37 crosses the release wedge 19, then the release wedge 19 contacts the two-side adjustment plates 25, the two-side adjustment plates are unfolded outward and then closed, and in the process, the two-side end caps 32 are still kept in contact with the surfaces of the corresponding adjustment plates and supported on the inner sides of the corresponding mating top blocks, so that the two-side adjustment plates have the maximum opening degree.

Example 4: on the basis of the above embodiments, a hand-driven mechanism 9 for lifting the weight guide rod 11 to move upward is added, and as shown in fig. 10 and 12, positioning auxiliary frames 4 are arranged on both sides of the upper part of the machine box, the positioning auxiliary frames 4 comprise longitudinal suspension frames 55 fixed on both sides, and a vertical rail 56 is fixed on the end of each longitudinal suspension frame 55 in an upward direction. Parallel swing guide bars 49 are fixed to both sides of the handle 50, and the end of each swing guide bar 49 is hinged to the root of the longitudinal suspension 55 through a pivot 61 so that the handle and the two swing guide bars can rotate along the pivot 61.

The two side swing guide rods 49 are sleeved with a sliding oblique sliding shaft 62, the middle part of the oblique sliding shaft 62 is provided with a mechanical diaphragm 54, and the two outer end parts of the oblique sliding shaft 62 are sleeved on the inner side of the vertical rail 56 in a matching way. Accordingly, when the guide bar 49 is swung at both sides, the diagonal slide shaft 62 can only move up and down along the vertical rail 56, that is, the mechanical diaphragm 54 can only move up and down along the vertical rail 56.

The mechanical diaphragm 54 is used to lock the weight guide rod 11, and after locking, the handle 50 is lifted up or moved down, which can drive the weight guide rod 11 and the lower column-shaped compaction hammer and the top pressing bottom plate to move up or down.

Example 5: in example 4, a mechanical diaphragm 54 as shown in fig. 12 is used, which comprises a fixed disk and a driving disk, which are fitted together, and a through hole is formed in the center of the fixed disk and the driving disk for fitting the weight guide 11, such as a lock shaft hole 58. A plurality of lock shaft rectangular pressing plates 59 are sleeved in gaps between the two disc bodies at the same time, sliding columns are arranged on the upper portion and the lower portion of each lock shaft rectangular pressing plate 59 respectively, a plurality of spiral slideways are arranged on the fixed disc bodies, each sliding column is sleeved in the corresponding spiral slideway, and when the disc bodies are driven to drive the plurality of lock shaft rectangular pressing plates 59 to rotate simultaneously, each sliding column slides in the corresponding spiral slideway, so that each lock shaft rectangular pressing plate 59 moves inwards or outwards simultaneously. When the weight guide rod 11 is located in the lock shaft hole 58, the rectangular pressing plates 59 of the lock shafts are driven to move inward at the same time, so that the weight guide rod 11 can be locked, and when the lifting handle 50 is lifted upwards, the weight guide rod 11 can be driven to move upwards through the mechanical diaphragm 54.

As can be seen from fig. 12, hand brake sliding sleeves 51 are respectively sleeved on the two side swing guide rods 49, a hand brake rod 57 is connected between the two side hand brake sliding sleeves 51, and a hand brake return spring for keeping the hand brake rod automatically return is arranged.

A link mechanism is provided between the hand brake lever 57 and the mechanical diaphragm 54, so that when the hand brake lever 57 approaches the handle 50 side, the mechanical diaphragm 54 is driven to operate, and the counterweight guide rod 11 is locked or released.

The linkage mechanism in fig. 12 is a transmission mechanism that is matched with a brake cable through a brake pipe, specifically, the brake cable is sleeved in the brake pipe, a brake cable through hole 64 is arranged on an oblique sliding shaft 62, one end of the brake pipe 53 is supported on a support of a swing guide rod 49, the other end is supported at the port of the brake cable through hole 64, one end of a brake cable 63 is connected with a hand brake rod 57, the other end is led out from the brake cable through hole 64 and is connected with a brake cable fixing end 65, and the brake cable fixing end 65 and the driving disc body are fixed into a whole. A brake cable return spring 66 is sleeved on the exposed part of the brake cable. Therefore, when the hand brake lever 57 is pulled to approach the lifting handle 50, the pull wire 63 can pull the driving disc to rotate, so as to drive the plurality of locking shaft rectangular pressing plates 59 to simultaneously move inwards or outwards, and thus the counterweight guiding rod 11 is locked or released.

Example 6: an accurate preparation equipment of soil sample, includes electronic control platform, mechanical light ring, hit real weight guide bar lifting mechanism, engine case, automatically controlled robotic arm, hit real weight, saturator, fixed sleeve, bottom plate support. The fixed sleeve is welded with the lower bottom plate support through two bolts, and the support is fixed on the ground, so that the acting force generated by the rotation of the sleeve when hammering vibration is overcome. Hammering mainly depends on the double gears of the case to rotate to drive the roller to move on the steel plate to realize the lifting of the self-adaptive gripping knife to the hammering hammer. And the lifting handle and the mechanical diaphragm can lift the compaction weight guide rod lifter to realize the working procedures of roughening, adding soil and the like.

In the embodiment, the bottom plate can be manufactured in a factory, and the upper opening aperture is simple to manufacture. The horizontal steel plate on the bottom plate and the rectangular steel plate are steel structural members and can be cut and reamed in a factory. Connect gradually horizontal steel sheet and last pressure rectangle steel sheet on the bottom plate, the back is tightly cramped from the downthehole hoop of rectangle steel sheet hole deep to the bottom plate with the bolt, welds the bolt on the horizontal steel sheet for the bolt bottom is through the clamping effect of rectangle steel sheet further realize with the stable connection of bottom plate.

The sleeve is improved, and the problem of stability in the hammering process is considered, on one hand, the contact area of the sleeve and the compaction cylinder is increased, and on the other hand, connecting pieces are additionally arranged on two sides of the sleeve to increase the stability of the sleeve. The size of the inner diameter and the outer diameter of the upper sleeve and the lower sleeve are changed, the outer diameter of the lower sleeve is the same as that of the compaction cylinder, and the inner diameter of the lower sleeve is equal to that of the upper sleeve 13 and the compaction cylinder 14, so that the size of the compacted soil sample meets the standard requirement. The connecting piece passes through U-shaped design and vertical bolted connection, when hitting real vibration, realizes the firm of steadying plate and bolt through butterfly goat's horn nut 48 on the bolt aperture, can guarantee the sleeve and hit the stability between the solid section of thick bamboo to this when vibrating.

Example 7: on the basis of embodiment 6, the electric control mechanical arm in this embodiment is divided into a mechanical arm weight guide rod and a mechanical gripper power transmission connecting piece, and the mechanical gripper power transmission connecting piece includes a circular ring steel plate (upper and lower horizontal steel plates, front and rear horizontal steel plates) guide post, a spring, a rectangular spring support bar, an adaptive gripper, a spring tensioning piece (composed of a spring, a shaft, a fixed sleeve and a fixed shaft part), and a rolling bearing.

The top of the heavy hammer guide rod 11 of the mechanical arm is welded with the box body, and the lower part of the heavy hammer guide rod is welded and fixed with the bottom plate. And flexible cushion blocks and wedge-shaped bodies are attached to two sides of the heavy hammer guide rod, and the cushion blocks realize the state of opening and closing the self-adaptive grabbing knife when the self-adaptive grabbing knife drives the compaction hammer to move up and down. The self-adaptive grab knife is provided with a spring tensioning piece, and the spring is connected with the fixed shaft part and the fixed sleeve through welding bolts. When the roller rotates, the spring is driven to compress inwards to drive the self-adaptive tool grabbing clamp and hammer body threads, when the spring is not contracted, the guide post in the self-adaptive tool grabbing hole diameter is positioned at the inner side of the rectangular strip at the edge of the self-adaptive tool grabbing, after the spring tensioning piece is compressed, the spring on the guide post is rotated by the chain to push upwards, the upper horizontal steel plate moves upwards, the spring tensioning piece drives the self-adaptive tool grabbing to contract inwards, the pin head of the guide post is parallel to the hole diameter of the screw, and the rectangular strip is positioned at the inner side of the guide post, so that the process is effectively prevented due to the fact that the spring tensioning piece drives the self-adaptive tool grabbing to contract inwards, the pin head of the guide post is parallel to the hole diameter of the screw, and the rectangular strip is positioned at the inner side of the guide post

The self-adaptive grabbing knife is prevented from extending outwards by the fact that the withdrawing force generated by the tensioning of the connecting springs on the two sides of the self-adaptive grabbing knife is generated.

Under the rotation of the roller, when the self-adaptive grabbing knife lifts the compaction hammer to rise to the sleeve ring of the heavy hammer guide rod, the self-adaptive grabbing knife falls. Because the existence of two release wedges in robotic arm weight guide bar both sides, horizontal steel plate when whereabouts to gasket department this moment, the gasket produces the external thrust to the self-adaptation sword of grabbing for when horizontal steel plate reachs initial position, just self-adaptation sword of grabbing is pushed away by the gasket, gets back to state when not extrudeing, and the rectangle strip is in the guide post outside promptly, and the self-adaptation is grabbed the sword and is in the state of stretching.

The compaction hammer guide rod lifter improves a lengthened ring sleeve and removes a positioning screw, the weight guide rod and the compaction hammer are smooth and have no friction, the long part is internally inserted into the center part of a mechanical diaphragm, the compaction hammer is lifted to the position of the ring sleeve through a gripper, and the compaction hammer falls freely to a hammering base after collision to realize compaction soil sample compaction.

Example 8: on the basis of embodiments 6 and 7, the hand-pulling type handle in this embodiment is composed of a mechanical aperture, a brake cable, a spring, a roller and a smooth groove. The bolt is welded on the light ring overhanging shaft, the brake cable is penetrated through the inner aperture of the bolt, the mechanical light ring connecting shaft penetrates through the middle part of the hand-pulling type handle, the rollers are arranged on two sides of the top end of the bolt, the rollers are integrally positioned in the rectangular groove slide rail, the rollers are in good contact with the vertical rail, and the rollers can slide up and down. The extension part of the heavy hammer guide rod extends into the mechanical diaphragm, the mechanical diaphragm can be closed manually, and the heavy hammer guide rod is not in contact with the diaphragm when a soil sample is hit. When the soil layer surface chiseling, the closed light ring of manual taut brake line, light ring center clamp weight guide bar lifts on the hand-pulling type handle this moment, lifts the process and can drive mechanical light ring connecting axle and shift up, and axle top pulley upwards slides along the recess this moment, drives mechanical light ring and lifts, accomplishes the promotion to the weight guide bar so far.

Claims (10)

1. The accurate preparation equipment of a soil sample is characterized by comprising a bottom plate (1), a case (2) containing a drive, a heavy hammer mechanism (3), a fixing frame assembly (5), a stabilizing frame assembly (6) and a heavy hammer lifting and releasing mechanism (7), wherein the horizontal bottom plate (1) is fixed with the bottom of an outer frame of the vertical case (2), the heavy hammer mechanism (3) comprises a heavy hammer guide rod (11), a columnar compaction hammer (39) and a top pressing bottom plate (41), wherein the center of the columnar compaction hammer (39) comprises an axial hole, the heavy hammer guide rod (11) is sleeved in the axial hole, so that the columnar compaction hammer (39) can lift and slide along the heavy hammer guide rod (11), the top of the heavy hammer guide rod (11) is sleeved in a guide hole arranged at the upper part of the case, the top pressing bottom plate (41) is fixed at the bottom of the heavy hammer guide rod (11), the fixing frame assembly (5) is fixed with the bottom plate together, the compaction device is characterized in that a compaction cylinder (14) is arranged on the upper side of a bottom plate (1), a stabilizing frame assembly (6) comprises an auxiliary guide sleeve (13) and stabilizing plates (42), the two stabilizing plates (42) are symmetrically fixed on two sides of the auxiliary guide sleeve (13), the auxiliary guide sleeve (13) is sleeved above the compaction cylinder (14) in a matching mode, the stabilizing plates (42) on two sides and the fixing frame assembly (5) are in a constraint relation, a heavy hammer guide rod (11) of a heavy hammer mechanism (3) is located right above the compaction cylinder (14), top pressing bottom plates (41) at the lower end and the bottom of the heavy hammer guide rod (11) are located in an inner cavity of the auxiliary guide sleeve (13), a heavy hammer lifting and releasing mechanism (7) is used for driving a columnar compaction hammer (39) to be lifted and released upwards, and the columnar compaction hammer (39) is used for applying impact to the top pressing bottom plates (41).

2. The soil sample precision manufacturing equipment according to claim 1, wherein the mechanism for driving the weight lifting and releasing mechanism (7) to ascend and descend is a circular driving mechanism, an upper chain wheel (15) is installed on the upper portion of the front side surface of the case, a lower chain wheel (16) is installed on the lower portion of the front side surface of the case, a chain (17) is wound on the upper chain wheel (15) and the lower chain wheel (16), the chain (17) is in transmission connection with the weight lifting and releasing mechanism (7), and when the chain (17) performs ascending and descending movement, the fixed frame of the weight lifting and releasing mechanism (7) can be driven to perform ascending and descending movement.

3. The accurate preparation equipment of soil sample of claim 1, characterized in that, mount assembly (5) includes two monomer subassemblies, and each monomer subassembly includes rectangle clamp plate (44), staple (45), bottom plate horizontal steel plate (46), bolt (47) and butterfly goat's horn nut (48), and bolt (47) of each monomer subassembly is fixed in bottom plate horizontal steel plate (46) upside perpendicularly, and two rectangle clamp plates (44) of each monomer subassembly are respectively through a plurality of staple (45) and bottom plate (1) fixed connection, and two rectangle clamp plates (44) are respectively top pressure in the both ends of bottom plate horizontal steel plate (46).

4. The soil sample precise manufacturing equipment according to the claim 3, characterized in that the stabilizing frame assembly (6) comprises an auxiliary guide sleeve (13) and stabilizing plates (42), the two stabilizing plates (42) are symmetrically fixed on two sides of the auxiliary guide sleeve (13), and the auxiliary guide sleeve (13) is fittingly sleeved above the compaction barrel (14).

5. The soil sample precise manufacturing equipment according to claim 4, wherein the front side and the rear side of the two stabilizing plates (42) are respectively provided with a stabilizing clamping groove (43), the auxiliary guide sleeve (13) carries the stabilizing plates (42) on the two sides to rotate, so that the stabilizing clamping grooves (43) on the two sides are sleeved on the outer sides of the bolts (47) on the two sides in a matching manner, the thread section on the top of each bolt (47) is provided with a butterfly-shaped claw nut, the butterfly-shaped claw nuts can be pressed on the upper sides of the corresponding stabilizing plates to press and fix the stabilizing plates on the two sides, the auxiliary guide sleeve (13) is sleeved and pressed above the compaction cylinder (14), and the position of the compaction cylinder is fixed.

6. The soil sample precision manufacturing equipment according to claim 1, wherein the weight mechanism (3) comprises a weight guide rod (11), a columnar compaction hammer (39) and a top pressing bottom plate (41), wherein the center of the columnar compaction hammer (39) comprises an axial hole, the weight guide rod (11) is sleeved in the axial hole, so that the columnar compaction hammer (39) can slide up and down along the weight guide rod (11), a suspension rod (18) is fixed on the front side of the upper part of the case, a vertical guide hole (67) is formed in the upper side of the suspension rod, and the top of the weight guide rod (11) is sleeved in a guide hole (67) formed in the upper part of the case.

7. The soil sample precision manufacturing equipment according to claim 1, wherein the weight lifting and releasing mechanism (7) comprises a fixing frame composed of an upper horizontal steel plate (20), a lower horizontal steel plate (21) and a vertical plate (22), an upper positioning hole (37) is respectively arranged at the center of the upper horizontal steel plate (20), a lower positioning hole (38) is respectively arranged at the center of the lower horizontal steel plate (21), a releasing mechanism guide post (12) is fixed between the upper suspension rod (18) of the machine box and the bottom plate (1), the releasing mechanism guide post (12) simultaneously penetrates through the upper positioning hole (37) and the lower positioning hole (38), so that the fixing frame of the weight lifting and releasing mechanism (7) can be supported by the releasing mechanism guide post (12) and can move up and down along the releasing mechanism guide post (12), and a releasing wedge block (19) is respectively fixed at two sides of the upper part of the releasing mechanism guide post (12), the upper side and the lower side of each releasing wedge block (19) on two sides both comprise guide inclined planes, the releasing wedge blocks (19) on two sides gradually converge from the inner side to the outer side, and the hole types of the upper positioning hole (37) and the lower positioning hole (38) are designed to be consistent with the shapes of the guide column and the wedge blocks on two sides, so that the upper positioning hole (37) and the lower positioning hole (38) can stride over the wedge blocks on two sides, but the guide column can only slide in a middle rectangular area of the upper positioning hole (37) and the lower positioning hole (38), and therefore, a fixing frame of the heavy hammer lifting and releasing mechanism (7) can vertically lift and slide on the guide column and can stride over the wedge blocks on two sides; there is fixing base (35) at the middle part of side around last horizontal steel sheet respectively, installs horizontal slide bar (33) in the front and back fixing base, has about two self-adaptations respectively in last horizontal steel sheet upper portion both sides and grabs sword (25), and every self-adaptation grabs sword (25) upside and is fixed with stand pipe (36) respectively, horizontal slide bar (33) run through and install in stand pipe (36) inboard, can freely slide to control two self-adaptations and grab sword (25) and can inwards or outwards translate on last horizontal steel sheet (20) the cover is equipped with extension spring (34) in horizontal slide bar (33) outside, and the inner of every extension spring is connected in corresponding fixing base (35), and the outer end is connected in corresponding stand pipe (36), thereby makes both sides self-adaptation grab sword (25), is in the state of inwards contracting under natural state.

8. The soil sample precision manufacturing equipment according to claim 7, wherein two sides of the upper horizontal steel plate (20) and the lower horizontal steel plate (21) of the heavy hammer lifting and releasing mechanism (7) are respectively provided with a guide hole (29), guide posts (28) are sleeved in the corresponding guide holes up and down in a matching manner, a spring support (30) is arranged in the middle of each guide post (28), a vertical spring (31) is sleeved between each spring support (30) and the lower surface of the upper horizontal steel plate (20), an end cap (32) is arranged at the upper end of each guide post, and the diameter of each end cap is larger than that of the guide rod body.

9. The soil sample precision manufacturing equipment according to claim 7, wherein a series of heavy hammer side ring grooves (40) are arranged on the side surface of the columnar compaction hammer (39), and after the two side adaptive grabbing knives (25) automatically contract inwards, the heavy hammer side ring grooves (40) can be clamped in the corresponding heavy hammer side ring grooves (40), so that when the heavy hammer lifting release mechanism (7) moves upwards, the heavy hammer side ring grooves (40) can be driven to move upwards together until the heavy hammer lifting release mechanism contacts the release wedge block (19), the two side adaptive grabbing knives (25) are supported by the lower guide inclined surface of the release wedge block (19) to start to expand outwards to separate from the side ring grooves, and the columnar compaction hammer (39) is released.

10. The soil sample precision manufacturing equipment according to claim 8, characterized in that the two side adaptive grab knives (25) are respectively provided with an adjusting flat hole (26), the guide posts (28) are respectively sleeved in the corresponding adjusting flat holes (26), meanwhile, the outer sides of the two side adaptive grab knives (25) are respectively provided with a matching top block (27), and each matching top block (27) is positioned at the outer side of the corresponding guide post (28).

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