CN112976283A

CN112976283A - Manufacturing device and manufacturing method of concrete test piece

Info

Publication number: CN112976283A
Application number: CN201911311004.0A
Authority: CN
Inventors: 王文学; 吴波明; 杨宇; 郝文甫; 贾学斌; 刘智; 白旭; 郭峰; 高兴; 舒先庆; 管秀芳
Original assignee: Wuhan Lixin Automation Technology Co ltd; Zhonglu Hi Tech Transport Certification And Inspection Co ltd
Current assignee: Wuhan Lixin Automation Technology Co ltd; Zhonglu Hi Tech Transport Certification And Inspection Co ltd
Priority date: 2019-12-18
Filing date: 2019-12-18
Publication date: 2021-06-18

Abstract

The invention provides a manufacturing device and a manufacturing method of a concrete test piece, wherein the manufacturing device of the concrete test piece comprises a rack, a sampling platform, a stirring tank and an inserting and tamping device; the sampling platform is movably arranged on the rack along a first horizontal direction; the stirring tank is positioned above the sampling platform and is provided with a first feeding hole and a first discharging hole which are respectively positioned at the upper part and the lower part of the stirring tank; the stirring tank is movably arranged on the rack along a second horizontal direction, the second horizontal direction forms an angle with the first horizontal direction, and the stirring tank can move to the position above the sampling platform; the inserting and smashing device is movably arranged on the rack and located above the sampling platform along the second horizontal direction, the inserting and smashing device comprises an inserting and smashing rod, the inserting and smashing rod can reciprocate along the vertical direction, the device is simple and reliable in structure, installation or replacement on a construction site is facilitated, the manufacturing device is used for producing a concrete test piece, labor intensity is reduced, manual misoperation is reduced, and consistency of the concrete test piece can be improved.

Description

Manufacturing device and manufacturing method of concrete test piece

Technical Field

The invention belongs to the field of civil engineering, and particularly relates to a manufacturing device and a manufacturing method of a concrete test piece.

Background

In civil engineering construction, according to the regulation of 'acceptance criteria for construction quality of concrete structure engineering', structural entity inspection needs to be carried out on important parts related to structural safety, wherein the inspection comprises the detection of concrete strength. The concrete test piece is prepared by mixing the concrete or the mortar according to the standard and then putting the mixture into a test mould of the concrete or the mortar to prepare a test block for detecting the strength grade of the concrete and is also an important ring for detecting the strength of the concrete.

At present, the concrete test piece is usually manufactured by adopting an artificial vibration mode, but along with the larger and larger building scale, because the square amount of engineering concrete is large, the concrete test piece is required to be manufactured on each layer of the main body, the number and the types of the concrete test pieces are more, the existing artificial vibration sample manufacturing can not meet the engineering requirements, and the artificially manufactured concrete test piece is not enough: on one hand, the labor intensity is high, the continuous work cannot be realized, the time and the labor are wasted, the labor cost is high, and the working efficiency is low; on the other hand, the manual vibration mode is adopted, due to the difference of the levels of operators, the probability of manual error and misoperation is higher, vibration is easy to be uneven, the quality of the manufactured test block is poor, and the accuracy of a test result is greatly influenced.

The detection of the concrete compressive strength is one of the most conventional test detection works in a laboratory, the concrete strength is also the most important index for reflecting the concrete quality, and great attention is paid to whether the detection strength can meet the design requirements and whether the discrete performance of the test data meets the specification requirements. The manufacture of the corresponding concrete test block becomes a heavy work for testing and detecting personnel, and the manufacture quality of the concrete test block also concerns the validity and authenticity of the detection data. Although concrete test block manufacturing has already been well-established standard specifications, the following problems still exist in terms of practical situations: (1) the problem of secondary stirring after material taking; (2) the problem of the difference of the molding time for manufacturing test blocks by using the same material in a coil is solved; (3) the problem of artificial difference of the procedures of manual manufacturing, inserting and smashing and the like; (4) the difference between the test block manufacturing on the construction site and the actual concrete pouring process is solved; (5) the problem of appearance quality difference of the test block caused by manual manufacturing, and the like. The problems all have certain influence on the real reflection of the concrete quality.

Disclosure of Invention

One of the technical problems to be solved by the present invention is to provide a device and a method for manufacturing a concrete test piece.

In order to solve the technical problems, the invention provides the following technical scheme:

according to one aspect of the invention, a manufacturing device of a concrete test piece is provided, which comprises a rack, a sampling platform, a stirring tank and an inserting and smashing device; the sampling platform is movably arranged on the rack along a first horizontal direction and is used for supporting a test piece mold; the stirring tank is positioned above the sampling platform and is provided with a first feeding hole and a first discharging hole which are respectively positioned at the upper part and the lower part of the stirring tank; the stirring tank is movably arranged on the rack along a second horizontal direction, the second horizontal direction forms an angle with the first horizontal direction, and the stirring tank can move to the position above the sampling platform; the inserting and smashing device is movably arranged on the rack and located above the sampling platform along the second horizontal direction, and comprises an inserting and smashing rod capable of reciprocating along the vertical direction.

Specifically, be fixed with in the frame along the first guide that the second horizontal direction extends, it sets up still including slidable in insert smashes device support and driving piece on the first guide, the driving piece can be followed vertical direction and stretched out and drawn back, wherein, the driving piece both ends connect respectively in the support with insert and smash the pole.

Preferably, the making devices of concrete test piece still including be fixed in the ration jar of the below of agitator tank, the ration jar has inside cavity and intercommunication inside cavity and external second feed inlet and second discharge gate, wherein, the second feed inlet with the second discharge gate sets up respectively to the alternative and opens, just the second feed inlet with first discharge gate intercommunication.

Further preferably, the capacity of the test piece mold is an integral multiple of the capacity of the quantitative tank.

According to a specific embodiment of the present invention, the sampling platform includes a tray and a positioning frame detachably connected above the tray, and the positioning frame is provided with a positioning hole for installing the test piece mold.

Preferably, the sampling platform further comprises an elastic assembly arranged below the tray, the sampling platform can move between an inserting and tamping position and an unlocking position, the sampling platform is locked on the rack through a locking device at the inserting and tamping position, the locking of the locking device is released, and the sampling platform is pushed upwards to the unlocking position by the elastic assembly.

Further, the sampling platform further comprises a vibration motor arranged below the tray.

Preferably, the making device still includes strickle the subassembly off, it includes straight reciprocating mechanism and installs through the articulated shaft L type scraper blade in the frame to strickle the subassembly off, straight reciprocating mechanism stretches out and draws back along the third direction, the rotatory central line of articulated shaft is followed the second horizontal direction extends, straight reciprocating mechanism's one end is fixed in the frame, the other end articulate in L type scraper blade, in order to drive L type scraper blade is around the articulated shaft rotates, wherein, the third direction is perpendicular to simultaneously first horizontal direction with the second horizontal direction.

According to another aspect of the present invention, there is provided a method for manufacturing a concrete test piece, the method using the apparatus for manufacturing a concrete test piece according to the present invention, comprising the steps of:

stirring: stirring the materials by using the stirring tank;

an adding step: adding a unit volume of material to the test piece mold on the sampling platform;

inserting and smashing: inserting and tamping the material in the test piece mold by using the inserting and tamping device;

and repeating the adding step and the tamping step until the test piece mould is filled and tamped.

Further, the manufacturing method further comprises a vibration step: after the test piece mold is filled and is inserted, unlocking the locking device and starting the vibration motor.

Preferably, the manufacturing method further comprises a leveling step: and scraping the material on the top of the test piece mold by utilizing a scraping component.

The manufacturing device and the manufacturing method of the concrete test piece provided by the invention at least have the following beneficial effects: the manufacturing device for the concrete test piece provided by the invention has a simple and reliable structure, is convenient to install or replace in a construction site, and can be used for producing the concrete test piece, so that the labor intensity is reduced, the manual misoperation is reduced, the consistency of the concrete test piece can be improved, and the influence on a detection result is reduced.

Drawings

The above and/or other objects and advantages of the present invention will become more apparent from the following description of the embodiments taken in conjunction with the accompanying drawings, in which:

fig. 1 is a structural diagram of a concrete sample manufacturing apparatus according to an exemplary embodiment of the present invention.

Fig. 2 is a structural view of the other side of the manufacturing apparatus of the concrete sample in fig. 1.

FIG. 3 is a structural view of the other side of the concrete sample manufacturing apparatus of FIG. 1.

Fig. 4 is a front view of the apparatus for manufacturing the concrete specimen of fig. 1.

Fig. 5 is a side view of the apparatus for manufacturing the concrete test piece of fig. 1.

Fig. 6 is a plan view of the concrete test piece manufacturing apparatus in fig. 1.

FIG. 7 is an enlarged view of a portion of the quantifying tank and the stirring tank of FIG. 1 after they are combined.

Fig. 8 is a block diagram of the tamping unit of fig. 1.

Description of reference numerals:

1. a stirring tank; 2. A tamping device;

21. a support; 22. A drive member;

3. a dosing tank; 301. A first on-off valve;

303. a second on-off valve; 304. A first hydraulic cylinder;

305. a second hydraulic cylinder; 4. A test piece mold;

5. a sampling platform; 501. A positioning frame;

502. a tray; 503. A positioning column;

504. a support; 505. A pillar;

506. an elastic component; 507. A locking device;

6. a first guide member; 7. A second guide member;

8. a troweling assembly; 801. An L-shaped scraper plate;

802. a linear reciprocating mechanism; 803. Hinging a shaft;

9. inserting a tamping rod; 11. And a frame.

Detailed Description

Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus their detailed description will be omitted.

Referring to fig. 1 to 8, the concrete test piece manufacturing device provided by the invention comprises a frame 11, a stirring tank 1, an inserting and smashing device 2 and a sampling platform 5, wherein the sampling platform 5 is located below the stirring tank 1 and the inserting and smashing device 2, the sampling platform 5 can be arranged to be capable of moving along a first horizontal direction, and of course, the sampling platform can also be arranged to be fixed on the frame 11 as required. In particular, the sampling platform 5 is slidably arranged on a second guide 7, which may preferably be a screw or a rail.

The stirring tank 1 and the tamping device 2 are slidably disposed on the frame 11 along the second horizontal direction, respectively, so as to be both capable of moving above the sampling platform 5, and the stirring tank 1 and the tamping device 2 may be disposed on two guide members parallel to each other, for example, the stirring tank 1 and the tamping device 2 may be disposed on a first guide member 6, for example, but not limited to, the first guide member 6 may be a screw rod or a guide rail, and the embodiment will be described by taking the guide rail as an example. When the whole concrete specimen manufacturing device is viewed from top down, the first guide member 6 and the second guide member 7 intersect at a point, and the intersecting position can be defined as a predetermined position in the following description. Preferably, the extension direction of the first guide 6 is perpendicular to the extension direction of the second guide 7. The arrangement of the first guide member 6 and the second guide member 7 is convenient for adjusting different positions of the inserting and smashing device 2 inserted into the same test piece mold 4, so that the inserting and smashing rods 9 can uniformly and dispersedly insert and smash materials in the same test piece mold 4 according to a preset sequence, and air bubbles (or air holes) in the materials are broken. In the same way, the stirring tank 1 is convenient for adding materials to each test piece mold 4.

Referring to fig. 7, the stirring tank 1 is used for stirring and mixing the raw materials of the concrete test piece, the stirring tank 1 has an internal cavity, and a first feeding hole and a first discharging hole which are used for communicating the internal cavity with the outside, the first feeding hole is located on the upper portion of the stirring tank 1, the first discharging hole is located on the lower portion of the stirring tank 1, and the stirring tank 1 is further provided with a stirrer. The below of agitator tank 1 is fixed with quantitative jar 3, and this quantitative jar 3 is the cylindric, has second feed inlet and second discharge gate, and wherein, second feed inlet and first feed inlet intercommunication, and this second feed inlet and second discharge gate selectivity are opened. Specifically, the capacity of the sample mold 4 is an integral multiple of the capacity of the quantitative tank 3, and preferably, the capacity of the sample mold 4 is 2 to 5 times the capacity of the quantitative tank 3.

Specifically, a first switch valve 301 and a second switch valve 303 are respectively arranged at the second feeding hole and the second discharging hole, and are respectively driven by a first hydraulic cylinder 304 and a second hydraulic cylinder 305, wherein a cylinder body and a piston rod of the first hydraulic cylinder 304 are respectively fixed on the first switch valve 301 and the stirring tank 1, and the first hydraulic cylinder 304 extends and retracts in the horizontal direction. The cylinder body and the piston rod of the second hydraulic cylinder 305 are fixed to the second on-off valve 303 and the agitator tank 1, respectively, the second hydraulic cylinder 305 extends and contracts in the horizontal direction, and the second hydraulic cylinder 305 is located vertically below the first hydraulic cylinder 304. Under initial state, second feed inlet and second discharge gate are all closed.

In the case where the sampling platform 5 carrying the specimen mold 4 is moved to the above-described predetermined position along the second guide 7, the agitation tank 1 may be moved to above the sampling platform 5, and at this time, the first switching valve 301 and the second switching valve 303 may be considered to be in the initial states, respectively. The first hydraulic cylinder 304 is started to act, the first switch valve 301 can be driven to move, the second feed port is completely opened, and materials in the stirring tank 1 can fall into the quantitative tank 3 under the action of gravity to fill the quantitative tank 3. The first hydraulic cylinder 304 is activated again to return the first on-off valve 301 to the initial state. Then, the second hydraulic cylinder 305 may be activated to actuate the second on-off valve 303 to open, and material may leave the dosing tank 3 and enter the test piece mold 4. The second hydraulic cylinder 305 is actuated again to drive the second on-off valve 303 to return to the initial state. As described above, the process of feeding the specimen mold 4 once is repeated, and the specimen mold 4 can be fed a plurality of times.

The first switching valve 301 and the second switching valve 303 may have the same structure, and the first switching valve 301 will be selected as an example in this embodiment.

Above the dosing tank 3 are fixed two fixed plates, which are fixed in parallel to each other as one body, between which a space is provided for accommodating the first switching valve 301, at which the first switching valve 301 can be arranged, and the first switching valve 301 can be moved between a stop position and a passing position. Specifically, two fixed plates are provided with a central through hole respectively, also are provided with the through-hole on the first ooff valve 301, initial state, and first ooff valve 301 is located the backstop position, and the through-hole all is not linked together with two central through holes promptly, and when adding the material to test piece mould 4, first ooff valve 301 is located the through-position, and the through-hole communicates respectively with two central through holes promptly to make quantitative jar 3 and agitator tank 1 communicate, under the action of gravity, the material can enter into in quantitative jar 3. The quantitative tank 3 can be arranged to enable the material entering the test piece mold 4 to be quantitatively added. Preferably, the first switch valve 301 further comprises a vent hole, so that when the first switch valve 301 is located at the stop position, the material in the quantitative tank 3 can be rapidly injected into the test piece mold 4, and the working efficiency is improved.

Referring to fig. 8, the tamping device 2 is used for breaking the air bubbles or air holes of the material in the test piece mold 4 so as to improve the compactness and uniformity of the formed concrete test piece. The tamping device 2 comprises a support 21, a driving part 22 arranged on the support 21 and a tamping rod 9, wherein the driving part 22 can drive the tamping rod 9 to move up and down along the vertical direction. The driving member 22 may be a hydraulic cylinder, an air cylinder, an electric push rod, or the like. In the present embodiment, a hydraulic cylinder is exemplified. Specifically, the hydraulic cylinder extends in the vertical direction, and the bracket 21 and the tamping rod 9 are respectively provided on the cylinder body and the piston of the hydraulic cylinder.

Referring to fig. 4, the sampling platform 5 includes a tray 502 and a positioning frame 501 located above the tray 502, and a plurality of positioning holes for accommodating the specimen mold 4 are provided on the positioning frame 501, wherein the bottom of the specimen mold 4 can be placed on the tray 502 through the positioning holes. The tray 502 and the positioning frame 501 are parallel to each other and spaced apart, and the positioning frame 501 is connected above the tray 502 by a support 505. Specifically, the locating rack 501 and the tray 502 are made of magnetic materials respectively, the support column 505 is a magnetic block and can be adsorbed together with the locating rack and the tray, and the connecting mode is convenient to detach, so that the working efficiency is improved. Further, in order to further improve the assembly efficiency and accurately position, the sampling platform 5 further includes a positioning column 503 disposed above the tray 502, a top of the positioning column 503 is formed into a tapered portion, an inverted tapered hole matched with the tapered portion is formed on the tray 502, and accurate positioning can be achieved by sleeving the tapered hole on the tapered portion. Preferably, there are 4 positioning pillars 503.

An elastic component 506 and a vibration motor are arranged below the tray 502, and the tray 502 can move between the tamping position and the unlocking position through the action of external force. When in the inserting and tamping position, the tray 502 is fixed on the frame 11 through the locking device 507, thereby preventing the tray 502 from vibrating up and down to influence the inserting and tamping effect in the inserting and tamping process of the inserting and tamping rod 9. After the insertion and tamping are completed, the locking device 507 is taken away, the tray 502 moves up to the unlocking position under the action of the elastic component 506, the vibration motor is started, and the whole tray 502 vibrates up and down, so that the material in the test piece mold 4 is further compacted and uniform. Specifically, the rack 11 is further provided with a support 504, and the tray 502 can be locked on the support 504. Preferably, the locking device 507 is a button lock.

Referring to fig. 1, the concrete sample manufacturing device further includes a leveling assembly 8 for scraping off excess material on the top of the sample mold 4 and filling and leveling the holes formed in the inserting and tamping process. The strickle assembly 8 comprises a linear reciprocating mechanism 802 and an L-shaped scraper 801 mounted on the frame 11 through a hinge shaft 803, the linear reciprocating mechanism 802 extends and retracts along a third direction, a rotation center line of the hinge shaft 803 extends along a second horizontal direction, one end of the linear reciprocating mechanism 802 is fixed on the frame 11, and the other end is hinged to the L-shaped scraper 801 to drive the L-shaped scraper 801 to rotate around the hinge shaft 803, wherein the third direction is perpendicular to the first horizontal direction and the second horizontal direction. The linear reciprocating mechanism 802 drives the L-shaped scraper 801 to rotate around the hinge shaft 803, so that the free end of the L-shaped scraper 801 can be tightly attached to the top end of the test piece mold 4 to scrape off the excessive material on the top end of the test piece mold 4, and simultaneously, the hole on the top surface of the material is filled. The inserting and smashing rod 9 and the L-shaped scraper 801 are combined, so that the operation is greatly simplified, the operation difficulty is reduced, a pipeline operation mode is formed, and the labor cost of engineering construction is reduced. After the material surface of the test piece mold 4 is flat, the linear reciprocating mechanism 802 can be contracted to move the free end of the L-shaped scraper 801 upward, so that the free end can leave the top end of the test piece mold 4. Preferably, the linear reciprocating mechanism 802 may be a hydraulic cylinder, an air cylinder, or an electric push rod.

The manufacturing device for the concrete test piece provided by the invention has a simple and reliable structure, is convenient to install or replace in a construction site, and can be used for producing the concrete test piece, so that the labor intensity is reduced, the manual misoperation is reduced, the consistency of the concrete test piece can be improved, and the influence on a detection result is reduced. Compared with manual vibration in the prior art, the method overcomes the difference of the levels of operators, ensures the consistency of the manufactured concrete test piece and improves the accuracy of the detection result.

According to another aspect of the invention, a method for manufacturing a concrete test piece is provided:

stirring: stirring the materials by using a stirring tank 1;

an adding step: adding a volume unit of material to a test piece mold 4 on a sampling platform 5;

inserting and smashing: inserting and tamping the material in the test piece mold 4 by using the inserting and tamping device 2;

the adding step and the tamping step are repeated until the specimen mold 4 is filled and tamped.

A vibration step: the locking device 507 is released and the vibration motor is started.

And (3) leveling: and scraping the material on the top of the test piece mold 4 by using the scraping component 8.

In order to more clearly illustrate the present manufacturing method, the present embodiment will select one method to describe.

Step 1, mixing and stirring the raw materials by using a stirring tank 1 to form a material for manufacturing a concrete test piece.

And 2, moving the stirring tank 1 to the position above the sampling platform 5, wherein in the step, the stirring tank 1 and the sampling platform 5 can be moved respectively, or only the stirring tank 1 or the sampling platform 5 can be moved, so that the stirring tank 1 is positioned above a test piece mold 4 on the sampling platform 5.

And 3, adding materials into the test piece molds 4 until the amount of the materials in each test piece mold 4 is half of the total capacity of the test piece mold 4. Preferably, in this step, materials may be added to the sample mold 4 by the quantitative tank 3, for example, the total capacity of the sample mold 4 is 10 units, and one quantitative tank 3 with a total capacity of 5 units may be selected to add materials to the sample mold 4 once. Of course, a quantitative tank 3 with a total capacity of 1 unit can be selected, and the material can be added into the test piece mold 4 for 5 times. That is, half of the total capacity of the sample mold 4 may be an integral multiple of the total capacity of the quantitative tank 3. By means of adding materials into the test piece mold 4 in a fixed amount, the weight of each concrete test piece is ensured to be approximately equal, and the consistency of the concrete test pieces is improved.

And 4, moving the sampling platform 5 to the lower part of the tamping device 2, and starting the driving piece to drive the tamping rod 9 to move up and down so as to tamp the material in the test piece mold 4.

And 5, moving the sampling platform 5 again until the sampling platform is positioned below the stirring tank 1, and adding materials into the test piece molds 4 by the stirring tank 1 until each test piece mold 4 is filled.

And 6, moving the sampling platform to the position below the inserting and tamping device 2 again, and inserting and tamping the material in the test piece mold 4 again. Preferably, in this step, the lower end of the tamper bar 9 can be inserted into the lower portion of the specimen mold 4. Preferably, the material feeding device can be inserted into the joint surface of the two-time material feeding.

And 7, unlocking the sampling platform 5 by the locking device 507, and starting the vibration motor to vibrate the material in the test piece mold 4, so that the compactness and uniformity of the concrete test piece are further improved.

And 8, scraping redundant materials on the top of the test piece mold 4 by using the scraping component 8 and filling and leveling holes formed in the inserting and tamping process.

In the above method, the order of the steps may be adjusted, and the above order of the steps is only an example and is not limited. Further, in the manufacturing process, the sequence of the movable tamping device 2, the stirring tank 1 and the sampling platform 5 is not limited, as long as the tamping device 2 or the stirring tank 1 can be positioned above the sampling platform 5.

The described features, structures, or characteristics of the invention may be combined in any suitable manner in one or more embodiments. In the above description, numerous specific details are provided to give a thorough understanding of embodiments of the invention. One skilled in the relevant art will recognize, however, that the invention may be practiced without one or more of the specific details, or with other methods, components, materials, and so forth. In other instances, well-known structures, materials, or operations are not shown or described in detail to avoid obscuring aspects of the invention.

Claims

1. The manufacturing device of the concrete test piece is characterized by comprising the following components:

a frame (11);

the sampling platform (5) is movably arranged on the rack (11) along a first horizontal direction, and the sampling platform (5) is used for supporting the test piece mold (4);

the stirring tank (1) is positioned above the sampling platform (5) and is provided with a first feeding hole and a first discharging hole which are respectively positioned at the upper part and the lower part of the stirring tank; the stirring tank (1) is movably arranged on the rack (11) along a second horizontal direction, the second horizontal direction forms an angle with the first horizontal direction, and the stirring tank (1) can move to the position above the sampling platform (5);

and the inserting and smashing device (2) is movably arranged on the rack (11) and is positioned above the sampling platform (5) along the second horizontal direction, the inserting and smashing device (2) comprises an inserting and smashing rod (9), and the inserting and smashing rod (9) can reciprocate along the vertical direction.

2. A concrete specimen making apparatus as claimed in claim 1, wherein a first guide member (6) extending along the second horizontal direction is fixed on the machine frame (11), the tamping device (2) further comprises a bracket (21) and a driving member (22) slidably disposed on the first guide member (6), the driving member (22) is capable of extending and retracting along the vertical direction, wherein both ends of the driving member (22) are respectively connected to the bracket (21) and the tamping bar (9).

3. The manufacturing device of the concrete test piece according to claim 1, further comprising a quantitative tank (3) fixed below the stirring tank (1), wherein the quantitative tank (3) has an internal cavity and a second inlet and a second outlet communicating the internal cavity with the outside, wherein the second inlet and the second outlet are respectively configured to be selectively opened, and the second inlet is communicated with the first outlet.

4. The manufacturing device of the concrete test piece according to claim 3, characterized in that the capacity of the test piece mold (4) is integral multiple of the capacity of the quantitative tank (3).

5. The manufacturing device of the concrete test piece according to claim 1, characterized in that the sampling platform (5) comprises a tray (502) and a positioning frame (501) detachably connected above the tray (502), and the positioning frame (501) is provided with positioning holes for installing the test piece mold (4).

6. The concrete test piece manufacturing device according to claim 5, wherein the sampling platform (5) further comprises an elastic assembly (506) arranged below the tray (502), the sampling platform (5) can move between an tamping position and an unlocking position, in the tamping position, the sampling platform (5) is locked on the rack (11) through a locking device (507), the locking of the locking device (507) is released, and the sampling platform (5) is pushed upwards to the unlocking position by the elastic assembly (506).

7. The apparatus for manufacturing a concrete specimen according to claim 6, wherein the sampling platform (5) further comprises a vibration motor disposed below the tray (502).

8. The concrete test piece manufacturing device according to any one of claims 1 to 7, further comprising a leveling assembly (8), wherein the leveling assembly (8) comprises a linear reciprocating mechanism (802) and an L-shaped scraper (801) mounted on the frame (11) through a hinge shaft (803), the linear reciprocating mechanism (802) extends and retracts in a third direction, a rotation center line of the hinge shaft (803) extends in the second horizontal direction, one end of the linear reciprocating mechanism (802) is fixed on the frame (11), and the other end of the linear reciprocating mechanism is hinged to the L-shaped scraper (801) to drive the L-shaped scraper (801) to rotate around the hinge shaft (803), and the third direction is perpendicular to the first horizontal direction and the second horizontal direction.

9. A method for manufacturing a concrete test piece, which uses the apparatus for manufacturing a concrete test piece according to any one of claims 1 to 8, comprising the steps of:

stirring: the stirring tank (1) is used for stirring the materials;

an adding step: adding a volume unit of material to the test piece mold (4) on the sampling platform (5);

inserting and smashing: inserting and tamping the material in the test piece mold (4) by using the inserting and tamping device (2);

repeating the adding step and the tamping step until the test piece mold (4) is filled and tamped.

10. The method for manufacturing a concrete specimen according to claim 9, characterized by further comprising the step of vibrating: after the test piece mold (4) is filled and the step of tamping is completed, the locking device (507) is unlocked, and the vibration motor is started.

11. The method for manufacturing a concrete specimen according to claim 10, characterized by further comprising the step of leveling: and scraping the material on the top of the test piece mold (4) by utilizing a scraping component (8).