CN112630111A - On-spot granule screening test device that gathers materials - Google Patents

Abstract

The invention belongs to the technical field of aggregate screening, and particularly relates to a field aggregate particle screening test device which is provided with a base for supporting, a shaking seat capable of shaking relative to the base, a turntable capable of rotating relative to the shaking seat, a positioning rod and an auxiliary rod for fixing a screening frame, and a pressing rod for pressing the screening frame; the shaking seat and the rotary table are both provided with the jackscrews, so that the screening frame can be singly shaken or rotationally screened or subjected to combined shaking and rotational screening.

Description

On-spot granule screening test device that gathers materials

Technical Field

The invention belongs to the technical field of aggregate screening, and particularly relates to a field aggregate particle screening test device.

Background

The grading of the aggregate refers to the matching condition of the aggregate particles, the gaps of the coarse aggregate in the concrete are filled by sand grains, and the gaps between the sand grains are filled by cement paste, so that the grading requirement on the aggregate must be provided for reducing the gaps between the aggregate particles as much as possible, achieving the purposes of saving cement and improving strength.

The criteria for good grading are: the aggregate contains more coarse particles, and the gaps of the aggregate are filled with proper medium particles and small particles, so that the void ratio and the total area of the aggregate are smaller. The aggregate with good gradation is used, so that the required cement paste amount is small, the economy is good, and the workability, the compactness and the strength of concrete can be improved, so that an experimenter or a technician of field engineering as a concrete material needs to know the gradation condition of the aggregate firstly to judge whether the aggregate gradation is good or not, whether the aggregate gradation needs to be adjusted or not and the like in one step.

The existing material collecting and screening equipment has small indoor test equipment, and is used for collecting and screening materials by means of vibration generated by equipment such as a motor, and also has the screening equipment used in a large-scale sand and stone material collecting production process, wherein the screening equipment comprises a circular vibrating screen and linear vibrating screening equipment, the circular vibrating screen is mainly used for collecting materials finely, and the linear vibrating screen is used for collecting materials coarsely and has a good screening effect. Because above-mentioned equipment must rely on reasons such as electric drive, mobility are poor and from great, very inconvenient to field test personnel, perhaps because on-the-spot reason, do not have power supply facility etc. and lead to current equipment unable utilization, rely on the manual work to sieve, it is difficult to sieve the effect poor to take trouble.

Disclosure of Invention

Aiming at the defects and problems of the existing equipment, the invention provides the on-site aggregate particle screening test device, which effectively solves the problems of complex structure, inconvenience in carrying equipment, poor applicability, high cost and incapability of being suitable for on-site portable aggregate screening in the existing equipment.

The technical scheme adopted by the invention for solving the technical problems is as follows: a field aggregate particle screening test device comprises a base, a shaking screening mechanism, a rotating screening mechanism, a screening frame and a pressing mechanism; the bottom of the bottom plate is provided with supporting legs, and the shaking screening mechanism comprises a chute, a sliding block, a guide rod and a shaking seat; the sliding chutes are arranged on the upper side surface of the bottom plate at intervals to form a shaking track; the guide rod is arranged in the sliding groove, the sliding block is sleeved on the guide rod in a sliding mode, the upper portion of the sliding block is fixed to the bottom of the shaking seat, and the shaking seat is located on the bottom plate; the rotary screening mechanism comprises a rotary table, a bearing and a guide wheel; the rotary table is of a hollow structure, a rotating shaft is arranged in the middle of the rotary table, a bearing is fixed on the shaking seat and is in transmission fit with the rotating shaft, and the guide wheel is arranged at the bottom of the rotary table along the circumference; the pressing mechanism comprises a positioning rod, an auxiliary rod and a pressing rod, the positioning rod and the auxiliary rod are vertically and symmetrically distributed on the periphery of the outer side of the rotary table, two sides of the pressing rod are sleeved on the positioning rod through positioning sleeves and can slide up and down along the positioning rod, and the positioning sleeves are provided with jackscrews for fixing the positioning sleeves on the positioning rods so as to realize preliminary pressing of the screening frame; the middle part of the pressure lever is provided with a threaded sleeve, and a compression screw is connected in the threaded sleeve in a threaded manner and used for carrying out secondary compression on the screening frame; the screening frame includes a plurality of independent screen cloth frames, and from top to bottom screen cloth frame's mesh diminishes in proper order, and wherein the screen cloth frame of bottom is for connecing the material frame to on locating the carousel, be provided with the apron on the screen cloth frame at top, the outside of locating lever is provided with the handle.

Furthermore, the cover plate is of a conical structure and is provided with a pressing sleeve corresponding to the pressing screw rod, and the pressing sleeve is arranged at the center of the conical structure.

Furthermore, the bottom of the material receiving frame is provided with a limiting block corresponding to the hollow turntable, and the limiting block is clamped at the hollow part and used for positioning the material receiving frame.

Furthermore, the turntable and the shaking seat are both provided with jackscrews, the turntable is fixed on the shaking seat through the jackscrews, and the shaking seat is fixed on the bottom plate through the jackscrews.

Furthermore, the bottom of the screening frame is provided with a clamping groove, the top of the screening frame is provided with a clamping tooth, and the screening frame on the upper part is clamped on the screening frame on the lower part.

Furthermore, a feed inlet is arranged on the cover plate.

Furthermore, the bottom plate is of a U-shaped structure with an upward opening, and the two side plates of the bottom plate are provided with lifting hands.

The invention has the beneficial effects that: the invention provides a portable manually operated aggregate screening test device, which aims to solve the problems that the existing aggregate screening is mostly mechanical equipment, is inconvenient to carry and cannot carry out an aggregate screening test on site.

Therefore, the invention is provided with a base for supporting, a shaking seat which can shake relative to the base, a turntable which can rotate relative to the shaking seat, a positioning rod and an auxiliary rod which are used for fixing the screening frame, and a pressing rod which is used for pressing the screening frame; wherein shake and all be provided with the jackscrew on seat and the carousel, can let the screening frame carry out solitary rocking or rotate the screening like this, or the rocking of combination formula and rotate the screening, the screening mode is various, and screening effect is good.

The material frame that connects that lies in the bottom simultaneously is fixed to be clamped on the carousel of fretwork to prevent to connect the material frame and take place the rotation when rotating, the carousel of fretwork has alleviateed equipment weight, and the fretwork column structure has formed the draw-in groove, and the draw-in groove forms the relation of clamping with the stopper, and novel structure has reduced equipment dead weight, and convenient to carry carries.

In addition, adjacent screening frames are clamped and matched through the clamping grooves and the clamping teeth, so that mutual sliding between the screening frames in the rotating process is avoided, the rotation of each screening frame is consistent with that of the rotary table, the screening effect is good, although the clamping effect of the clamping mechanism is realized, the relative sliding between the screening frames is inevitable, the sliding screening frames not only influence the screening effect, but also cause poor equipment stability and high noise; the pressing and fixing of the screening frame are firstly positioned through the hollow turntable at the bottom and fixed from the bottom, and meanwhile, due to the integral structure of the positioning rod and the turntable, the screening frame can be fixed from the upper part through the pressing rod and the pressing screw rod, so that the stability of equipment is ensured.

Therefore, the on-site aggregate particle screening test device designed by the invention has the advantages of simple structure, convenience in operation, light dead weight and no dependence on electric energy, and works with manual assistance. The invention mainly has the following characteristics:

(1) the device has simple structure, light dead weight and mobility, and can meet the field requirement;

(2) because the power is not relied on, the equipment such as a motor is removed, and the weight of the equipment is greatly reduced;

(3) the mechanical principle is utilized to carry out structural design, the manual screening habit is imitated, and the screening effect is good while the labor is saved;

therefore, the invention has strong applicability and stable structure, provides a portable aggregate particle screening structure for field test for people, has low cost and provides convenience for field personnel and testers.

Drawings

Fig. 1 is a schematic diagram of the application structure of the present invention.

Fig. 2 is a front view of fig. 1.

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

Fig. 4 is a top view of fig. 1.

Fig. 5 is a schematic structural diagram of the present invention.

Fig. 6 is a front view of fig. 5.

Fig. 7 is a top view of the drawing.

Fig. 8 is a schematic structural view of another embodiment of the shaking and screening mechanism.

Fig. 9 is a schematic structural view of the assist mechanism.

Fig. 10 is a schematic structural view of another embodiment of the rotary screening mechanism.

The reference numbers in the figures are: 1 is a bottom plate, 2 is a sliding chute, 3 is a guide rod, 4 is a shaking seat, 5 is a rotary table, 51 is an inner ring, 52 is an outer ring, 53 is a ribbed plate, 54 is a protective plate, and 55 is a guide wheel; 6 is a positioning rod, 7 is an auxiliary rod, 8 is a pressing rod, 9 is a positioning sleeve, 10 is a threaded sleeve, 11 is a compression screw, 12 is a screen frame, 13 is a cover plate, 14 is a lifting handle, 15 is a supporting leg, 16 is a bearing, 17 is a handle, 18 is a sliding block, 19 is a spring, 20 is a driving disc, 21 is an eccentric rod, 22 is a fixing sleeve, 23 is a driving rod, 24 is a power assisting block, 25 is an arc-shaped track, and 26 is an arc-shaped spring.

Detailed Description

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

Example 1: this embodiment aims at providing a scene granule screening test device that gathers materials, mainly used carries out the screening of gathering materials at the scene, in order to confirm the actual gradation of scene gathering materials, further adjust to the aggregate that satisfies optimal gradation, but current structure to gathering materials screening generally relies on mechanical equipment, cause it to be difficult for carrying like this, it is inconvenient to remove, can't use at the scene, and with high costs, it is difficult to carry out at the scene, for this embodiment provides a field usage, convenient to carry, manual formula is used for the testing arrangement of the ratio of spot survey gathering materials.

As shown in fig. 1-4, the on-site aggregate particle screening test device comprises a base 1, a shaking screening mechanism, a rotating screening mechanism, a screening frame and a pressing mechanism; the bottom of bottom plate 1 is provided with supporting leg 15, and supporting leg 15 is located the four corners, and bottom plate 1 is the folded plate of the ascending U-shaped structure of opening, is provided with on its both sides board and lifts hand 14, conveniently carries through lifting hand 14.

The shaking screening mechanism comprises a chute 2, a sliding block 18, a guide rod 3 and a shaking seat 4; the sliding chutes 2 are arranged on the upper side surface of the bottom plate at intervals to form a shaking track; the guide rod 3 is arranged in the sliding chute 2, the sliding block 18 is sleeved on the guide rod 3 in a sliding mode, the upper portion of the sliding block 18 is fixed to the bottom of the shaking seat 4, and the shaking seat 4 is located on the bottom plate 1; the bottom of the shaking seat 4 can be selectively provided with a unidirectional translation wheel to reduce the friction force between the shaking seat and the bottom plate and improve the stability during shaking.

Meanwhile, a penetrating jackscrew is arranged on the shaking seat 4 and can be pushed against the bottom plate 1, so that the shaking of the shaking seat 4 during carrying or other actions is avoided, the equipment is stable, the jackscrew is pushed against the bottom plate 1, and the shaking seat 4 is fixed due to the fact that the sleeving relation between the sliding block 18 and the guide rod 3 and the pushing relation between the jackscrew and the bottom plate are matched.

The rotary screening mechanism comprises a rotary table 5, a bearing 16 and a guide wheel 55; carousel 5 is fretwork column structure, the structure of fretwork form, and it sets up the purpose and is for: firstly, the self weight of the equipment is reduced, and the weight of the equipment is reduced; and secondly, the driving force of the equipment is reduced, meanwhile, the braking load during rotation can be reduced, and the operation is convenient.

As shown in fig. 5-7, the middle part of the inner ring 51 of the turntable 5 is a disc-shaped structure, the outer ring 52 is provided with a guard plate 54 downward to form a spigot-shaped structure, the inner ring 51 and the outer ring 52 are connected through a rib plate 53 to form the turntable 5 with a hollow-out structure, the middle part of the turntable 5 is provided with a rotating shaft, the bearing 16 is fixed on the shaking seat 4 and is in transmission fit with the rotating shaft, and the guide wheel 55 is circumferentially arranged at the bottom of the turntable; the middle part of concrete inner circle 51 is provided with decurrent pivot, it has the bearing to rock fixed mounting on the seat 4, the pivot suit is in the bearing and realize rotating the connection, the operation is light, the bearing of here also can be replaced by the axle sleeve, the bottom of floor 53 is provided with guide pulley 55, the backplate 54 structure of outer lane is with the bearing, form the protection including pivot and guide pulley parcel, simultaneously for further improvement protecting effect, rock and move and still can be provided with the seal receptacle on the seat, be provided with the butt joint groove on the seal receptacle, backplate spiral-lock protects the structure of inside at the butt joint inslot, avoid building site dust and sand to get into bearing department.

The pressing mechanism comprises a positioning rod 6, an auxiliary rod 7 and a pressing rod 8, the positioning rod 6 and the auxiliary rod 7 are vertically and symmetrically distributed on the periphery of the outer side of the rotary table to form a screening frame, the two sides of the pressing rod 8 are sleeved on the positioning rod 6 through a positioning sleeve 9 and can slide up and down along the positioning rod, and a jackscrew is arranged on the positioning sleeve 9 and used for fixing the positioning sleeve on the positioning rod to realize primary pressing on the screening frame; a threaded sleeve 10 is arranged in the middle of the pressure rod 8, and a compression screw 11 is connected with the threaded sleeve 10 through internal threads and used for carrying out secondary compression on the screening frame; the structure of jackscrew in this embodiment still can be replaced by the fixed silk that runs through (the fixed silk compares jackscrew fixed strength big, can bear bigger compression reverse force), and the interval is provided with the fixed orifices on the locating lever, and the fixed silk runs through the fixed orifices and realizes preliminary fixed to realize final compressing tightly through compression screw 11.

The screening frame comprises a plurality of independent screening frames 12, the meshes of the screening frames 12 are sequentially reduced from top to bottom, the bottom screening frame is a material receiving frame and is located on the turntable 5, a cover plate 13 is arranged on the top screening frame, and a handle 17 is arranged on the outer side of the positioning rod; the cover plate 13 is of a conical structure and is provided with a pressing sleeve corresponding to the pressing screw rod, and the pressing sleeve is arranged at the center of the conical structure.

Specifically, according to the quality of sand and stone for common concrete and the specification of a detection method (JGJ 52-2006), when a sand screening test is required, a screen frame is selected as a square-hole screen, the square-hole screens with the diameters of 10mm, 5mm, 2.5mm, 1.25mm, 630 μm, 315 μm and 160 μm are respectively arranged, a base plate and a cover of the screen are respectively arranged, the diameter of the screen frame is 300mm, the maximum particle size of aggregate can be visually observed, a proper combination of the square-hole screens is selected, the square-hole screens are sequentially stacked together according to the size, top wires on lantern rings at two ends of a press rod of a screening device are opened, the press rod is grasped and vertically lifted upwards, the arranged test screen is placed on a rotary table after the press rod is taken down, the stable placement is ensured, the rotary table and a main and auxiliary rod can just limit the left and right movement of the test screen, the aggregate to be detected is poured into the top layer of the square holes of the test screen, the aggregate is poured into 2/3, cover the screen lid, embolia the mobile jib perpendicularly on the lantern ring of depression bar according to opposite step, stop when the depression bar can push down the screen lid, screw up the jackscrew earlier, then screw up lock nut, ensure that experimental sieve can not rock from top to bottom, after the preparation work is accomplished, take off the jackscrew, the experimenter grasps two handle seesaws, drive carousel and experimental sieve simultaneous movement, alright in order to begin to sieve, when rocking from top to bottom needs, it can promote to grasp about the handle, after the screening, take off the experimental sieve, gather materials to each grade and weigh, the grade of gathering materials is joined in marriage the judgement according to the standard requirement.

When the crushed stone and pebble screening test is required, selecting a test sieve, namely, each square hole sieve with the diameter of 100 mm, 80 mm, 63 mm, 50 mm, 40 mm, 31.5 mm, 25mm, 20 mm, 16 mm, 10mm, 5mm, 2.5mm, 1.25mm, 630 mu m, 315 mu m and 160 mu m, each base plate and cover of the sieve, the diameter of a sieve frame of 300mm, and the maximum particle size of aggregate can be visually observed, selecting a proper square hole sieve combination, stacking the square hole sieves together according to the size in sequence, and operating according to the above steps.

Therefore, the embodiment is provided with a base for supporting, a shaking seat which can shake relative to the base, a turntable which can rotate relative to the shaking seat, a positioning rod and an auxiliary rod which are used for fixing the screening frame, and a pressing rod which is used for pressing the screening frame; the rotary table and the shaking seat are provided with jackscrews, the rotary table is fixed on the shaking seat through the jackscrews, the shaking seat is fixed on the bottom plate through the jackscrews, and the screening frame can be singly shaken or screened in a rotating mode or in a combined mode, so that the screening mode is various, the screening effect is good, the structure is simple, the operation is convenient, the dead weight is light, the electric energy is not depended on, and the manual assistance is utilized for operation.

Example 2: this example is substantially the same as example 1, except that: the present embodiment further describes the structure of the material frame.

The bottom of the material receiving frame is provided with a limiting block corresponding to the hollowed-out turntable, and the limiting block is clamped at the hollowed-out position and used for positioning the material receiving frame.

Connect the material frame to be bottom confined bucket column structure in embodiment 1 and this embodiment, it needs to accept the minimum aggregate of particle diameter, in order to guarantee fixed effect, connects the material frame to clamp on the fretwork carousel through the stopper of bottom to enable to be located the bottommost and connect the material frame to be fixed in the fretwork carousel, and rotate along with the fretwork carousel together, thereby fix the material frame from the bottom, combine in embodiment 1 to compress the screw rod and fix screening frame from the top, stable in structure.

Example 3: this example is substantially the same as example 1, except that: this example further illustrates each screen frame.

The bottom of the screen frame is provided with a clamping groove, the top of the screen frame is provided with a clamping tooth, and the screening frame on the upper part is clamped on the screen frame on the lower part.

In the screening process, the stability that each screen frame is difficult to guarantee only depending on the pressure applying of compression screw, transmission power relies on frictional force between each other between each screen frame, this kind of mode transmission efficiency is poor, especially when the inside aggregate of screen frame is more, each screen frame can take place the dislocation and remove, for avoiding this problem, this embodiment has set up draw-in groove and latch structure in handing-over department of each screen frame, fix the screen frame through the mode that clamps, ensure rotating the screening in-process, each screen frame can not take place relative displacement.

Example 4: this example is substantially the same as example 1, except that: the cover plate in the embodiment can be provided with a feed inlet.

In this embodiment be provided with the charge door on the apron, can feed into to the screen frame on top under the confined state like this, in order to avoid gathering materials from the anti-play of charge door department, charge door department is provided with the filling tube, and the filling tube upwards just has certain height to avoid gathering materials of bottom to anti-play.

Example 5: this example is substantially the same as example 1, except that: the present embodiment further illustrates the structure of the shaking and screening mechanism.

In this embodiment, as shown in fig. 8, in this embodiment, two ends of the guide rod are sleeved with springs 19, bottoms of the springs 19 are fixed on the side walls of the sliding chute 2, outer ends of the springs 19 are free ends, and the sliding block 18 moves along the guide rod and can be abutted against the free ends of the springs.

Aiming at the problem that the shaking motion is reciprocating motion, a hand operation handle drives a handle to realize that a shaking seat slides in a shaking slide rail and needs to be folded back when the shaking seat is at a limit position, the existing mode is generally to brake through a hand and then apply force reversely to the hand to realize the reciprocating motion of the shaking, but the mode is troublesome to use and laborious to operate, therefore, a spring assembly is arranged, the purpose of the spring assembly is to enable a sliding block to carry out force accumulation buffering at the limit position and provide assistance force for the reciprocating motion, the sliding block slides along a guide rod, the spring is compressed when the sliding block is contacted with the free end of the spring, slow buffering braking can be carried out when the spring is compressed, after the spring is compressed to a certain degree, the shaking seat reaches the maximum limit position, then the sliding block at the maximum limit position can be assisted due to the force accumulation of the spring, and the aim of labor saving during manual operation is achieved, the operation is light.

For this reason, in this embodiment, after one driving, due to the force accumulation of the spring, a plurality of reciprocating motions can be realized, and under the condition of small friction loss, a small-sized boosting mechanism can be considered to be arranged outside, as shown in fig. 9, the boosting mechanism includes a driving disc 20, an eccentric rod 21, a fixing sleeve 22 and a boosting block 24, the driving disc 20 is connected with the driving structure to realize its rotation, the specific driving structure can be a motor or a handwheel, the eccentric rod 21 is hinged on the eccentric side of the driving disc 20, the tail end of the eccentric rod 21 is hinged with a driving rod 23, the driving rod 23 is sleeved in the fixing sleeve 22, and the tail end thereof is provided with the boosting block 24, so that the boosting block 24 can be driven in a reciprocating manner, the period of one reciprocating motion of the slider after one driving is counted, the period of the boosting block is designed, so that the boosting block, thereby, the driving type shaking and screening function can be realized.

From this, this embodiment has set up the spring of buffering at the both ends of guide arm to alternative increase assist drive device optimizes the drive of rocking the screening, in order to alleviate the operational burden of manpower.

Example 6: this example is substantially the same as example 1, except that: the present embodiment further describes the structure of the rotary sifting mechanism.

As shown in fig. 10, in this embodiment, the swing base is provided with a rotation rail, the rotation rail is an arc rail 25 using the rotation shaft as a center of circle, the center angle of the arc rail 25 can be 180-250 degrees, the two ends of the arc rail are provided with arc springs 26, the outer ends of the arc springs 26 are free ends, when the swing base is specifically implemented, the rotation screen can be rotated in a half-circle manner, the arc springs can be compressed when reaching a limit position, and then assistance is performed by the compression of the arc springs to reduce the braking load when the swing base is rotated to the limit position, so that the operation is light.

Example 7: this example is substantially the same as example 1, except that: the structure of the support leg is explained in this embodiment.

Face the problem of lasting feeding when screening step by step, newly reinforced cover in the great coarse fodder top of each layer filter screen bottom, lead to further screening work load big, influence screening efficiency. The expense manpower, the expense is good at, and the structure of supporting leg can be for vibrating the subassembly in this embodiment, and the vibrating assembly can provide the vibration for whole, improves the screening efficiency who gathers materials under the effect of vibration.

Claims (7)

1. The utility model provides an on-spot aggregate particle screening test device which characterized in that: the device comprises a base, a shaking screening mechanism, a rotating screening mechanism, a screening frame and a pressing mechanism; the bottom of the bottom plate is provided with supporting legs, and the shaking screening mechanism comprises a chute, a sliding block, a guide rod and a shaking seat; the sliding chutes are arranged on the upper side surface of the bottom plate at intervals to form a shaking track; the guide rod is arranged in the sliding groove, the sliding block is sleeved on the guide rod in a sliding mode, the upper portion of the sliding block is fixed to the bottom of the shaking seat, and the shaking seat is located on the bottom plate; the rotary screening mechanism comprises a rotary table, a bearing and a guide wheel; the rotary table is of a hollow structure, a rotating shaft is arranged in the middle of the rotary table, a bearing is fixed on the shaking seat and is in transmission fit with the rotating shaft, and the guide wheel is arranged at the bottom of the rotary table along the circumference; the pressing mechanism comprises a positioning rod, an auxiliary rod and a pressing rod, the positioning rod and the auxiliary rod are vertically and symmetrically distributed on the periphery of the outer side of the rotary table, two sides of the pressing rod are sleeved on the positioning rod through positioning sleeves and can slide up and down along the positioning rod, and the positioning sleeves are provided with jackscrews for fixing the positioning sleeves on the positioning rods so as to realize preliminary pressing of the screening frame; the middle part of the pressure lever is provided with a threaded sleeve, and a compression screw is connected in the threaded sleeve in a threaded manner and used for carrying out secondary compression on the screening frame; the screening frame includes a plurality of independent screen cloth frames, and the mesh of screen cloth frame from top to bottom diminishes in proper order, and wherein the screen cloth frame of bottom connects the material frame for connecing the material frame, connects the material frame to sit on the carousel, is provided with the apron on the screen cloth frame at top, and the outside of locating lever is provided with the handle.

2. The in situ aggregate particle screening test apparatus of claim 1, wherein: the cover plate is of a conical structure and is provided with a pressing sleeve corresponding to the pressing screw rod, and the pressing sleeve is arranged at the center of the conical structure.

3. The in situ aggregate particle screening test apparatus of claim 1, wherein: the bottom of the material receiving frame is provided with a limiting block corresponding to the hollowed-out turntable, and the limiting block is clamped at the hollowed-out position and used for positioning the material receiving frame.

4. The in situ aggregate particle screening test apparatus of claim 1, wherein: the turntable and the shaking seat are respectively provided with a jackscrew, the turntable is fixed on the shaking seat through the jackscrew, and the shaking seat is fixed on the bottom plate through the jackscrew.

5. The in situ aggregate particle screening test apparatus of claim 1, wherein: the bottom of the screen frame is provided with a clamping groove, the top of the screen frame is provided with a clamping tooth, and the screen frame on the upper part is clamped on the screen frame on the lower part.

6. The in situ aggregate particle screening test apparatus of claim 1, wherein: the cover plate is provided with a feed inlet.

7. The in situ aggregate particle screening test apparatus of claim 1, wherein: the bottom plate is of a U-shaped structure with an upward opening, and the two side plates of the bottom plate are provided with lifting hands.

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