CN219365396U - A mold device for improving unloading springback of compressed poured concrete - Google Patents

Abstract

The utility model discloses a die device for improving unloading rebound of compression pouring concrete, which comprises the following components: the mould structure consists of two semicircular arc steel sleeves and can be fixedly connected through bolts; the bottom plate structure is fixedly connected to the lower end of the die structure through bolts and the pressing plate structure; the pressing plate structure is connected with the bottom plate structure through bolts and can be fixed under the lower span of the die structure in a pressurizing manner; the pressure head structure can apply pressure to the pressure receiving groove of the rebound prevention pressure disc structure; the anti-rebound pressure plate structure can compress the inside of the die structure and can be fixedly connected to the upper end of the die structure through bolts. According to the utility model, the rebound prevention pressure plate structure and the bottom plate structure act together to effectively prevent the compression cast concrete test piece from vertical unloading rebound, so that the casting quality and the casting efficiency of the compression cast concrete test piece are remarkably improved.

Description

A mold device for improving unloading springback of compressed poured concrete

technical field

The utility model relates to the technical field of compression pouring concrete, in particular to a mold device for improving unloading rebound of compression pouring concrete.

Background technique

Although concrete is the most widely used building material in today's society, structural members cast with ordinary concrete generally have original defects such as low strength, large porosity, and poor durability. Performance concrete, fiber-reinforced concrete, fly ash concrete, etc. lead to a significant increase in production costs and consumption of energy and natural aggregate mineral resources. So a new pouring technology—compression pouring came into being. Compared with the traditional concrete pouring technology, this technology does not require any chemical treatment or additional materials, and only needs to be installed by hydraulic jacks during the concrete pouring process. Put the fresh concrete mixture into the special steel mold structure, apply a certain compressive stress to assist the concrete forming, achieve the effect of physical compression and compaction, thereby improving the strength and elastic modulus of the concrete, reducing the porosity, and improving the impermeability and durability. Moreover, compression pouring technology can maintain the production cost comparable to that of ordinary concrete products while improving the performance of concrete.

Existing research results also show that compression technology can significantly improve the physical and mechanical properties of natural concrete, rubber concrete, seawater sea sand concrete, recycled aggregate concrete, glass and marble waste concrete, and artificial stone, and can significantly improve the physical and mechanical properties of waste rubber, seawater The utilization rate of materials such as sea sand, recycled aggregate and waste glass in engineering structures has important economic significance and engineering value.

Compression pouring technology is a very effective technical method that can significantly improve the performance of concrete, however, due to the following defects in the existing special steel mold structure in the pouring process: the existing special steel mold structure is divided into inner and outer two-layer mold structure , and there are no fixed constraints at the upper and lower ends. Unloading the compressive stress after pouring will cause the compressed concrete specimen to spring back after unloading vertically. After the external mold structure is removed, the compressed concrete specimen will experience multi-directional Unloading rebound, especially for concrete added with steel fiber, rubber and other external materials that obviously have an unloading rebound effect, the rebound of the internal materials of the concrete and the concrete itself will cause serious damage to the compressed concrete specimen after unloading. Significantly reduce the improvement effect of compression pouring technology, and the compression pouring equipment that needs to provide power has been providing compressive stress to the concrete in the mold structure until the concrete will not rebound after 24 hours, which seriously affects the efficiency of compression pouring equipment.

Therefore, the mold structure used in the compression casting process still needs to be improved and developed.

Utility model content

The purpose of this utility model is to provide a mold device that improves the unloading springback of compressed poured concrete, to solve the problems in the above-mentioned prior art, and avoid the vertical unloaded springback of the compressed poured concrete specimen after the compressive stress is unloaded, thereby Effectively improve pouring quality and pouring efficiency.

In order to achieve the above object, the utility model provides the following scheme:

The utility model provides a mold device for improving unloading springback caused by compression pouring concrete, comprising: a mold structure, an anti-rebound pressure plate structure, a pressure head structure and a bottom plate structure, and the mold structure includes a first semi-arc shaped steel sleeve and The second semi-arc-shaped steel sleeve, the first semi-arc-shaped steel sleeve and the second semi-arc-shaped steel sleeve are connected by bolts to form a sleeve; the bottom of the anti-rebound pressure plate structure has a pressure projection head, the pressing convex head is used to extend into the mold structure from the top of the mold structure to compress the concrete in the mold structure, and the anti-rebound pressure plate structure is connected with the top of the mold structure It is fixedly connected by bolts to ensure that the position of the pressing protrusion protruding into the mold structure is fixed; the top of the pressure head structure is connected with the compression pouring equipment by bolts, and the bottom of the pressure head structure is used for Contact with the top of the anti-rebound platen structure and transmit the pressure exerted by the compression pouring equipment; the bottom plate structure and the bottom of the mold structure can be fixedly connected by bolts to seal the bottom of the mold structure.

Specifically, it also includes a plurality of first fixing bolts, the top of the mold structure is fixedly connected with an outwardly extending upper span, and a plurality of elliptical first through holes are arranged on the upper span, and the anti-return The elastic pressure plate structure also includes a top flange, which is fixedly connected to the outer wall of the top of the pressing protrusion, and a plurality of second through holes are arranged on the top flange, and the second through holes are connected with the The first through holes are arranged correspondingly, and each of the first fixing bolts is respectively used to pass through one of the first through holes and one of the second through holes to connect the anti-rebound pressure plate structure to the mold structure. fixed.

Specifically, a circumferential gap is provided between the pressure-applying protrusion and the mold structure, and a pressure-receiving groove is provided on the top of the anti-rebound pressure plate structure, and the pressure-receiving groove is used to bear the pressure. A circumferential gap is provided between the bottom of the head structure and the bottom of the pressure head structure.

Specifically, it also includes a plurality of pressing plate structures, each of the pressing plate structures is used to press the bottom of the mold structure and is fixedly connected with the bottom plate structure, so as to press and seal the bottom of the mold structure.

Specifically, the pressing plate structure includes a pressing plate, an adjusting bolt and a pressing bolt, the pressing plate is provided with a third through hole and a first threaded hole, and the third through hole is closer to the mold than the first threaded hole structure, the bottom edge of the mold structure is fixedly connected with an outwardly extending lower wingspan, one end of the pressing plate close to the mold structure is used to contact the top of the lower wingspan, and the bottom plate structure is provided with a second Two threaded holes, the adjusting bolt is used to thread through the third through hole and the second threaded hole so that the bottom surface of the pressure plate is flush with the top surface of the lower wingspan, and the pressurized The bolts are threadedly connected with the first threaded holes and pressed against the top surface of the bottom plate structure.

Specifically, the number of the pressing plate structures is four, and the four pressing plate structures are evenly arranged along the circumferential direction of the mold structure.

Specifically, it also includes a plurality of second fixing bolts, the mold structure is an internal and external integrated mold structure, a plurality of fourth through holes are arranged on the lower wingspan of the mold structure, and a plurality of fourth through holes are arranged on the bottom plate structure. Three threaded holes, the fourth through hole is set corresponding to the third threaded hole, and the second fixing bolt is screwed through the fourth through hole and the third threaded hole to connect the lower wingspan It is fixedly connected with the base plate structure.

Specifically, the mold structure includes a first semi-circular arc-shaped steel sleeve and a second semi-circular arc-shaped steel sleeve, first connecting plates are arranged on both sides of the first semi-circular arc-shaped steel sleeve, and the second semi-circular arc Both sides of the arc-shaped steel sleeve are provided with second connecting plates, and the first connecting plates are fixedly connected with the corresponding second connecting plates.

Specifically, it also includes a plurality of third fixing bolts, a fifth through hole is provided on the first connecting plate, a sixth through hole is provided on the second connecting plate, and the fifth through hole is connected to the first connecting plate. The six through holes are provided correspondingly, and one third fixing bolt is used to fixedly connect the first connecting plate and the second connecting plate after passing through the fifth through hole and the sixth through hole.

Specifically, it also includes a plurality of demolition bolts, a plurality of fourth threaded holes are arranged on the first connecting plate, and the demolding bolts are used to be threadedly connected with the fourth threaded holes and pressed against the second The connecting plate is close to one side of the first connecting plate, so as to separate the mold structure including the first semi-arc-shaped steel sleeve and the second semi-arc-shaped steel sleeve.

Compared with the prior art, the utility model has achieved the following technical effects:

The utility model provides a mold device for improving unloading springback caused by compression pouring concrete. By connecting the bottom plate structure with the bottom of the mold structure, the compression pouring device presses the anti-rebound pressure plate structure into the mold structure through the pressure head structure until the compressive stress When the set size is reached, keep the compressive stress constant and pressurize for a certain period of time (this time depends on the concrete material), and then fix the anti-rebound pressure plate structure with the upper end of the mold structure through bolts, and fix it with the upper end of the mold structure The final anti-rebound pressure plate structure can continuously compress the concrete material inside the mold structure, and the demolition of the mold structure is carried out 24 hours after the pouring is completed, so as to prevent the compression of the concrete itself and the elastic-plastic materials added to the concrete. After the pouring device is unloaded, the springback damages the specimen, thereby effectively improving the pouring quality of the compression pouring concrete. Finally, the compression pouring device is unloaded and the mold structure is removed. The compression pouring device can continue to work immediately. Another set of filling The mold structure filled with fresh concrete is applied to load, thereby effectively improving the pouring efficiency of compression poured concrete.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings required in the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description are only the present invention. For some embodiments of the present invention, those of ordinary skill in the art can also obtain other drawings based on these drawings on the premise of not paying creative efforts.

Fig. 1 is the front view of the mold device that improves compression cast concrete to produce unloading springback provided by the utility model;

Fig. 2 is the side view of Fig. 1;

Fig. 3 is the top view of Fig. 1;

Fig. 4 is the structural schematic diagram of the anti-rebound pressure plate structure in the mold device for improving compression pouring concrete to produce unloading rebound provided by the utility model;

FIG. 5 is a top view of FIG. 4 .

In the figure: 1. Die structure; 2. Anti-rebound pressure plate structure; 3. Pressure head structure; 4. Bottom plate structure; 5. First fixing bolt; Wing span; 9. Compression groove; 10. Press plate structure; 11. Press plate; 12. Adjusting bolt; 13. Pressure bolt; 14. Second fixing bolt; 15. Lower wingspan; 16. First semicircle arc Section steel sleeve; 17, the second semicircular arc section steel sleeve; 18, the first connecting plate; 19, the second connecting plate; 20, the third fixing bolt; 21, demoulding bolt; 22, internal threaded hole; 23, Depression bar; 24, adjustment spring; 25, centering buckle; 26, second through hole.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

The purpose of this utility model is to provide a mold device that improves the unloading springback of compressed poured concrete, so as to solve the problems in the prior art, and avoid the vertical deformation of the compressed concrete specimen after the unloading of the compressive stress. Unload springback, effectively improve pouring quality and pouring efficiency.

In order to make the above purpose, features and advantages of the utility model more obvious and easy to understand, the utility model will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that when a component is called "fixed on" or "Disposed on" another element, either directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

It should also be noted that the same or similar symbols in the drawings of the embodiments of the present invention correspond to the same or similar components; , "Left", "Right" and other indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, which are only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, therefore, the terms describing the positional relationship in the drawings are for illustrative purposes only, and should not be construed as limitations on this patent. For those of ordinary skill in the art, they can The specific meanings of the above terms shall be understood according to specific situations.

The utility model provides a mold device for improving unloading springback of compressed poured concrete, as shown in Figures 1 to 4, comprising: a mold structure 1, an anti-rebound pressure plate structure 2, a pressure head structure 3 and a bottom plate structure 4, and a mold structure Including the first semi-circular arc steel sleeve and the second semi-circular arc steel sleeve, the first semi-circular arc steel sleeve and the second semi-circular arc steel sleeve are connected by bolts to form a sleeve; the bottom of the anti-rebound pressure plate structure It has a pressure-applying convex head, which is used to extend from the top of the mold structure into the mold structure to compress the concrete in the mold structure, and the top of the anti-rebound pressure plate structure and the top of the mold structure can be fixedly connected by bolts, In order to ensure that the position of the pressure protrusion protruding into the mold structure is fixed; the top of the pressure head structure is connected with the compression pouring equipment through bolts, and the bottom of the pressure head structure is used to contact the top of the anti-rebound pressure plate structure and transfer compression pouring The pressure exerted by the equipment; the bottom plate structure and the bottom of the mold structure are fixedly connected by bolts to seal the bottom of the mold structure. The plate structure is pressed into the mold structure until the compressive stress reaches the set value, and then the compressive stress is kept constant for a certain period of time (this time depends on the concrete material), and then the anti-rebound plate structure and the mold structure are connected by bolts. The upper end of the mold structure is fixed, and the anti-rebound pressure plate structure fixedly connected to the upper end of the mold structure can continuously compress the concrete material inside the mold structure, and the demoulding of the mold structure is carried out 24 hours after the pouring is completed, so as to prevent the compression pouring The concrete itself and the elastoplastic materials added to the concrete have the effect of rebounding and damaging the specimen after the compression pouring device is unloaded, thereby effectively improving the pouring quality of the compression pouring concrete. Finally, the compression pouring device is unloaded, the mold structure is removed, and the compression pouring is performed. The device can immediately continue to pour, and apply load to another set of mold structures filled with fresh concrete, thereby effectively improving the pouring efficiency of compression poured concrete.

In a specific solution of this embodiment, the mold device for improving the unloading springback of the compressed poured concrete also includes a plurality of first fixing bolts 5, and the upper end of the mold structure 1 is fixedly connected with an outwardly extending upper wingspan 8, the upper wing A plurality of oval-shaped first through holes are arranged on the exhibition hall 8, and the anti-rebound pressure plate structure 2 includes a pressure-applying protrusion 6, a top flange 7 and a pressure-receiving groove 9, and the pressure-applying protrusion 6 is used to extend into the mold structure 1, a plurality of elliptical second through-holes 26 are arranged on the top flange 7, and the second through-holes 26 are arranged correspondingly to the first through-holes, and a first fixing bolt 5 is used to pass through a first through-hole and After a second through hole 26, the anti-rebound pressure plate structure 2 is fixedly connected with the mold structure 1. The structure is simple and easy to use; the pressure head structure 3 exerts pressure on the anti-rebound pressure plate structure 2 so that the application of the anti-rebound pressure plate structure 2 The pressing head 6 enters the mold structure 1 downward and compresses the concrete in the mold structure 1. During this process, the first fixing bolt 5 will not restrict the downward movement of the anti-rebound pressure plate structure 2. When applied to the mold structure 1 When the compressive stress on the concrete reaches the set size, keep the compressive stress constant and pressurize for a certain period of time (this time depends on the concrete material), then use the first fixing bolt 5 to connect the upper wing span 8 and the top flange 7 fixed, it can prevent the concrete in the mold structure 1 from unloading and rebounding upwards and damage the test piece, thereby effectively improving the pouring quality of the compressed concrete.

Specifically, the top of the pressure head structure 3 is connected with a pressure rod 23, and the top of the pressure rod 23 is provided with an internal threaded hole 22, and the internal threaded hole 22 is used for threaded connection with the compression casting device.

Further, there is a small circumferential gap between the pressing protrusion 6 and the mold structure 1, and when the pressing protrusion 6 is pressed down, it does not contact the mold structure 1, and the top of the anti-rebound pressure plate structure 2 is provided with The pressure groove 9 is used to carry the compressive stress from the bottom of the pressure head structure 3, and there is a circumferential gap between the pressure groove 9 and the pressure head, and the anti-rebound pressure plate can compress the pressure The pressure transmitted by the head structure 3 is evenly transmitted to the concrete in the mold structure 1 .

In this embodiment, the mold device for improving the unloading springback of compressed poured concrete also includes a plurality of platen structures 10, and each platen structure 10 is used to compress the lower wingspan 15 at the bottom of the mold structure 1 with the bottom plate structure 4 to compress the mold The structure 1 is sealed with the bottom plate structure 4, which can effectively prevent the loss of a large amount of cement paste in the fresh concrete mixture when the concrete is vibrated and filled in the mold structure 1 and the compressive stress is applied, thereby significantly improving the pouring quality of the concrete specimen and increasing the compression force. Performance of poured concrete.

Specifically, the platen structure 10 includes a platen 11, an adjusting bolt 12, and a pressure bolt 13. The platen 11 is provided with a third through hole and a first threaded hole. The first threaded hole is provided on the end of the platen 11 away from the mold structure 1. The three-way hole is arranged in the middle of the pressing plate 11, and the bottom of the mold structure 1 is fixedly connected with the lower wingspan 15 extending outwards. A second threaded hole is provided, and the adjusting bolt 12 is used to pass through the third through hole to be threadedly connected with the second threaded hole so that the bottom surface of the pressing plate 11 is flush with the top surface of the lower wingspan 15, and the pressure bolt 13 is connected with the first screw thread. The holes are threaded and pressed against the top surface of the bottom plate structure 4. The structure is simple. By adjusting the pressure bolt 13 downwards, the pressure plate 11 pressed on the lower wingspan 15 can compress the lower wingspan 15 and the bottom plate structure 4, thereby avoiding The loss of the cement paste of the concrete in the mold structure 1 effectively improves the performance of the compressed concrete.

Further, the pressing plate structure 10 also includes an adjusting spring 24, the adjusting spring 24 is sheathed on the outside of the adjusting bolt 12, and is arranged between the pressing plate 11 and the bottom plate structure 4, the adjusting spring 24 can keep the pressing plate 11 in contact with the screw of the adjusting bolt 12. Cap contact, convenient to adjust the bolt 12 to adjust the pressure plate 11 to the top surface of the lower wingspan 15, the structure is simple and easy to operate.

Furthermore, the number of platen structures 10 is four, and the four platen structures 10 are evenly arranged along the circumference of the mold structure 1 .

In this embodiment, the mold device for improving the unloading springback of compressed poured concrete also includes a plurality of second fixing bolts 14, the mold structure 1 is an internal and external mold structure, and the lower wingspan 15 of the mold structure 1 is provided with a plurality of second fixing bolts 14. Four through holes, the bottom plate structure 4 is provided with a plurality of third threaded holes, the fourth through hole is correspondingly arranged with the third threaded hole, and the second fixing bolt 14 is threaded through the fourth through hole and the third threaded hole to connect the lower The wingspan 15 is fixed to the bottom plate structure 4, and the mold structure 1 and the bottom plate structure 4 are further fixed. The mold structure 1 is an internal and external integrated mold structure. It is no longer necessary to remove the outer mold on site to replace the inner mold, which improves the pouring efficiency and eliminates the on-site Defects of hoop springback in compressed cast concrete caused by removal of the outer mold structure.

Specifically, the mold structure 1 includes a first semi-circular arc-shaped steel sleeve 16 and a second semi-circular arc-shaped steel sleeve 17, and first connecting plates 18 are arranged on both sides of the first semi-circular arc-shaped steel sleeve 16, and the second half Both sides of the arc-shaped steel sleeve 17 are provided with second connecting plates 19, the first connecting plates 18 are fixedly connected with the corresponding second connecting plates 19, the structure is simple, and it is convenient to remove the molded compressed concrete.

Further, the mold structure 1 also includes a centering buckle 25, which is used to align the inner side walls of the first semi-circular arc-shaped steel sleeve 16 and the second semi-circular arc-shaped steel sleeve 17 before the bolts are fixed, The centering buckle 25 includes a centering protrusion and a centering groove, the centering protrusion is arranged on the bottom of the first connecting plate 18, the centering groove is arranged on the bottom of the second connecting plate 19, the centering protrusion and the centering groove Correspondingly set in the groove, the centering protrusion can be embedded in the centering groove to align the inner sidewalls of the first semicircle-arc steel sleeve 16 and the second semicircle-arc steel sleeve 17, thereby enabling the first semicircle arc Quick assembly is completed while the inner side walls of the shaped steel sleeve 16 and the second semicircular arc shaped steel sleeve 17 are aligned.

Furthermore, the mold device for improving the unloading springback of compressed poured concrete also includes a plurality of third fixing bolts 20, the first connecting plate 18 is provided with a fifth through hole, and the second connecting plate 19 is provided with a sixth through hole , the fifth through hole is set corresponding to the sixth through hole, a third fixing bolt 20 is used to fix the first connecting plate 18 and the second connecting plate 19 after passing through the fifth through hole and the sixth through hole, the structure is simple, The side wall of the mold structure 1 can be closed, avoiding the loss of the cement paste of the concrete in the mold structure 1, and effectively improving the performance of the compressed concrete.

In this embodiment, the mold device for improving the unloading springback of the compressed poured concrete also includes a plurality of demolding bolts 21, the first connecting plate 18 is provided with a plurality of fourth threaded holes, and the demolding bolts 21 are used to connect with the fourth The threaded holes are threaded, and the demolition bolt 21 can be turned to make the demolition bolt 21 tighten the first connecting plate 18, so that the first connecting plate 18 is separated from the second connecting plate 19, thereby completing the demoulding, and the demolding bolt 21 makes the pouring complete And after standing for 24 hours, the removal of the mold structure 1 becomes simple, and the possibility of damage to the concrete caused by the violent demolition of the original mold is also avoided.

When using the mold device to improve the unloading springback of compressed poured concrete, it can be divided into the following five steps:

The first step is preparation,

This process needs to connect the pressure head structure composed of the pressure rod 23 and the pressure head structure 3 to the existing compression pouring equipment through the M12 internal thread hole 22 on the top of the pressure rod 23 and the corresponding bolts.

The second step is the assembly process of the mold structure 1,

This process is carried out in sequence according to the up and down positions of the components.

First of all, it is necessary to assemble the pressure bolt 13, the adjustment bolt 12, the pressure plate 11, the adjustment spring 24 and other components into the pressure plate structure 10, then place the bottom plate structure 4 on the flat ground, and then form the pressure plate structure 10 through the adjustment bolt 12 and the adjustment spring 24. The adjusting bolt 12 structure connects the pressing plate structure 10 to the base plate structure 4, and the four pressing plate structures 10 are connected to the base plate structure 4 in turn.

Secondly, because the mold structure 1 is made up of the first semi-arc-shaped steel sleeve 16 and the second semi-arc-shaped steel sleeve 17, and the structure between the mold structure 1 and the base plate structure 4 is distributed by three 120° included angles. Two fixing bolts 14 are connected and fixed, so that there is a certain difference between the first semicircle arc steel sleeve 16 and the second semicircle arc steel sleeve 17, that is, the lower wing of the first semicircle arc steel sleeve 16 lower end There are two bolt holes on the span 15, and there is only one bolt hole on the lower wingspan 15 of the second semicircle-arc steel sleeve 17 lower ends. Therefore, when connecting the structure of the bottom plate structure 4 with the first semicircle-arc steel sleeve 16 and the second semicircle-arc steel sleeve 17 of the mold structure 1 through the second fixing bolt 14, it is necessary to connect and fix the existing structure on the lower wingspan 15 first. The second semi-arc-shaped steel sleeve 17 of two bolt holes, then the first semi-arc-shaped steel sleeve 16 is assembled by centering buckle 25, so that the first semi-arc-shaped steel sleeve 16 can be guaranteed to be fast The connection is fixed on the bottom structure 4 structure, thus shortening the assembly time.

Once again, it is necessary to fix the first connecting plate 18 of the first semicircle-arc-shaped steel sleeve 16 and the second connecting plate 19 of the second semi-circular-arc-shaped steel sleeve 17 by the third fixing bolt 20, and the demolition bolt 21 It is also fixed in the corresponding fourth threaded hole.

Finally, it is necessary to adjust the rotation of the four pressing plates 11 by adjusting the adjusting bolts 12 in the pressing plate structure 10 until they are slightly pressed against the lower wingspan 15 of the mold structure 1, and then apply pressure to the pressing plates 11 through the pressing bolts 13 so that It firmly presses down the lower span 15 of the mold structure 1 .

The third step is the pouring process:

The process is carried out sequentially,

First, a layer of template oil needs to be applied inside the mold structure 1 assembled by the mold structure 1 structure and the base plate structure 4 structure to prevent the concrete mixture from sticking to the mold structure 1, which will cause damage to the concrete specimen during demoulding.

Secondly, add the freshly mixed concrete mixture into the mold structure 1 assembled by the mold structure 1 structure and the bottom plate structure 4 structure in three times, and each time it is poured, it needs to be vibrated with a plug-in vibrator with a power of 3000 watts. After inserting and vibrating for 5-8 times (the frequency of vibrating is related to the concrete mix ratio, the shape of the mold structure 1, etc.), and it is necessary to meet the amount of the final added concrete mixture just reaching the maximum capacity of the mold structure 1.

Thirdly, it is necessary to place the anti-rebound pressure plate structure 2 on the upper end of the mold structure 1 assembled by the mold structure 1 structure and the bottom plate structure 4 structure, and ensure that the anti-rebound pressure plate structure 2 pressing protrusion 6 is just inserted into the mold structure 1 , and then move the mold structure 1 as a whole so that the pressure head structure 3 is aligned with the pressure groove 9 of the anti-rebound platen structure 2 (that is, the pressure head structure 3 can be vertically inserted into the pressure groove 9 of the anti-rebound platen structure 2).

Finally, start the existing compression pouring equipment, so that the structure of the pressure head 3 is pressed into the pressure groove 9 of the anti-rebound pressure plate structure 2, and the pressure protrusion 6 of the anti-rebound pressure plate structure 2 is pressed against the inside of the mold structure 1. The concrete is compacted. After the compression pressure reaches the design size, it can continue to be compacted for a certain period of time (this time depends on the concrete material). After the compaction is formed, the compression pressure is kept constant. A fixing bolt 5 completely fixes the anti-rebound pressure plate structure 2 on the mold structure 1 assembled by the mold structure 1 structure and the bottom plate structure 4 structure, and then unloads the mold structure 1 by controlling the compression pouring equipment. The compression pouring equipment was lifted up and down, and the formwork was removed after 24 hours.

The fourth step is the demoulding process:

This process is also carried out sequentially.

Firstly, the first fixing bolt 5 and the third fixing bolt 20 need to be dismantled in sequence, and then the second fixing bolt 14 and the pressure exerted by the pressure plate structure 10 on the lower wingspan 15 of the mold structure 1 need to be removed in sequence, wherein the pressure plate structure 10 has a pair of The pressure applied by the lower wingspan 15 of the mold structure 1 is released by releasing the pressure applied by the pressure bolt 13 to the pressing plate 11 . Then, the demolition bolt 21 needs to be rotated to separate the first semi-arc steel sleeve 16 and the second semi-arc steel sleeve 17 of the mold structure 1, and finally the anti-rebound pressure plate structure 2 can be removed to remove the concrete Test pieces, and the concrete test pieces are cured (for example, under standard curing conditions for 28 days), to obtain compression poured concrete without rebound.

The fifth step is the mold structure 1 cleaning and maintenance process:

This process only needs to clean and brush the inside of the first semi-arc-shaped steel sleeve 16 and the second semi-arc-shaped steel sleeve 17 of the mold structure 1 and the structure of the bottom plate structure 4, without other steps, and it is not necessary to press the plate The structure 10 is disassembled and can be used directly in subsequent use, which can also save the time for assembling the mold structure 1 when the mold structure 1 is reused later.

In the utility model, specific examples have been used to illustrate the principle and implementation of the utility model, and the descriptions of the above examples are only used to help understand the method of the utility model and its core idea; meanwhile, for those of ordinary skill in the art , according to the idea of the utility model, there will be changes in the specific implementation and application range. To sum up, the contents of this specification should not be understood as limiting the utility model.

Claims (10)

1. A mold device for improving compression pouring concrete to produce unloading springback, characterized in that: comprising: A mold structure, the mold structure comprising a first semicircular arc steel sleeve and a second semicircular arc steel sleeve, the first semicircular arc steel sleeve and the second semicircular arc steel sleeve are connected by bolts complete sleeve; Anti-rebound pressure plate structure, the bottom of the anti-rebound pressure plate structure has a pressure projection, and the pressure projection is used to extend into the mold structure from the top of the mold structure to the mold structure. The concrete is compressed, and the anti-rebound pressure plate structure is fixedly connected to the top of the mold structure by bolts to ensure that the position where the pressure-applying protrusion protrudes into the mold structure is fixed; An indenter structure, the top of the indenter structure is bolted to the compression pouring equipment, and the bottom of the indenter structure is used to contact the top of the anti-rebound platen structure and transmit the pressure exerted by the compression pouring equipment; and A bottom plate structure, the bottom plate structure is fixedly connected to the bottom of the mold structure by bolts to seal the bottom of the mold structure. 2. The mold device for improving unloading springback of compressed poured concrete according to claim 1, characterized in that: it also includes a plurality of first fixing bolts, and the upper end of the mold structure is fixedly connected with an outwardly extending upper wing The upper wingspan is provided with a plurality of first through holes; the anti-rebound pressure plate structure also includes a top flange, and the top flange is fixedly connected to the outer wall of the top of the pressure-applying protrusion, so A plurality of second through holes are arranged on the top flange, and the second through holes are arranged corresponding to the first through holes, and each of the first fixing bolts is respectively used to pass through one of the first through holes and the first through hole. One said second through hole fixes said anti-rebound pressure plate structure and said mold structure. 3. The mold device for improving unloading springback of compressed poured concrete according to claim 2, characterized in that: a circumferential gap is arranged between the pressure-applying protrusion and the mold structure; the anti-rebound pressure plate A pressure receiving groove is provided on the top of the structure, and the pressure receiving groove is used to bear the bottom of the indenter structure and there is a circumferential gap between the bottom of the indenter structure. 4. The mold device for improving compression pouring concrete according to claim 1 to produce unloading rebound, characterized in that: it also includes a plurality of pressing plate structures, each of the pressing plate structures is used to compress the bottom of the mold structure and is in contact with the mold structure The bottom plate structure is fixedly connected to seal the bottom of the mold structure. 5. The mold device for improving unloading springback of compressed poured concrete according to claim 4, characterized in that: the pressure plate structure includes a pressure plate, an adjusting bolt and a pressure bolt, and the pressure plate is provided with a third through hole and The first threaded hole, the third through hole is closer to the mold structure than the first threaded hole, the bottom of the mold structure is fixedly connected with an outwardly extending lower wingspan, and the pressing plate is closer to the mold structure One end is used to be in contact with the top of the lower wingspan, the bottom plate structure is provided with a second threaded hole, and the adjusting bolt is used to pass through the third through hole and threadedly connect with the second threaded hole to adjust The bottom surface of the pressing plate is flush with the top surface of the lower wingspan, and the pressure bolt is threadedly connected with the first threaded hole and pressed against the top surface of the bottom plate structure. 6. The mold device for improving the unloading springback of compressed poured concrete according to claim 5, characterized in that: the number of the pressing plate structures is four, and the four pressing plate structures are uniform along the circumferential direction of the mold structure set up. 7. The mold device for improving compression pouring concrete to produce unloading rebound according to claim 1, characterized in that: it also includes a plurality of second fixing bolts, the mold structure is an internal and external integrated mold structure, and the lower part of the mold structure A plurality of fourth through holes are arranged on the wingspan, and a plurality of third threaded holes are arranged on the bottom plate structure, and the fourth through holes are arranged correspondingly to the third threaded holes, and the second fixing bolts pass through The fourth through hole is threadedly connected with the third threaded hole to securely connect the lower wingspan of the mold structure with the bottom plate structure. 8. The mold device for improving compression pouring concrete according to claim 7 to produce unloading springback, characterized in that: the mold structure includes a first semicircular arc steel sleeve and a second semicircular arc steel sleeve, the first Both sides of the semi-arc-shaped steel sleeve are provided with first connecting plates, and both sides of the second semi-circular-arc-shaped steel sleeve are provided with second connecting plates, and the first connecting plate is connected to the corresponding second connecting plate. The plates are fixedly connected to fix the first semi-arc-shaped steel sleeve and the second semi-arc-shaped steel sleeve. 9. The mold device for improving unloading springback caused by compressing poured concrete according to claim 8, characterized in that: it also includes a plurality of third fixing bolts, a fifth through hole is arranged on the first connecting plate, and the A sixth through hole is provided on the second connecting plate, the fifth through hole is correspondingly set to the sixth through hole, and one third fixing bolt is used to pass through the fifth through hole and the sixth through hole. The first connection board and the second connection board are fixedly connected after the holes are passed through. 10. The mold device for improving unloading springback of compressed poured concrete according to claim 9, characterized in that: it also includes a plurality of demoulding bolts, and a plurality of fourth threaded holes are arranged on the first connecting plate, so that The demolition bolt is used to be threadedly connected to the fourth threaded hole and abutted against a side of the second connecting plate close to the first connecting plate.