CN111618989A

CN111618989A - Feeding system for precast pile with variable cross section

Info

Publication number: CN111618989A
Application number: CN201910153575.XA
Authority: CN
Inventors: 周兆弟
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-02-28
Filing date: 2019-02-28
Publication date: 2020-09-04

Abstract

The invention discloses a variable cross-section precast pile charging system, which comprises a mould body and concrete pumping equipment, wherein the mould body comprises a large-caliber section forming part and a small-caliber section forming part which are connected into a whole, an angle formed between a transition surface between the large-caliber section forming part and the small-caliber section forming part and the axis of the mould body is a, the mould body is provided with at least one feeding hole and at least one exhaust hole for allowing concrete to enter the mould body, the feeding hole is connected with the concrete pumping equipment, and when the concrete pumping equipment fills the concrete into the mould body, the tangential inclination angle formed between the mould body and the horizontal plane is more than a; the problem of closed type pouring concrete in-process bubble appear easily, especially when aiming at the bamboo joint stake easily build up bubble in heavy-calibre shaping portion, influence the tubular pile quality is solved.

Description

Feeding system for precast pile with variable cross section

Technical Field

The invention relates to the technical field of building prefabricated parts and manufacturing equipment thereof, in particular to a feeding system for a prefabricated pile with a variable cross section.

Background

When producing concrete pipe pile, put into the lower mould with the steel reinforcement cage and put into the concrete cloth in the mould, cover the centrifugal cloth mode behind the mould, also have through setting up stretch-draw board and fixed plate at the mould both ends that assemble, then set up the feed inlet on the fixed plate, pour into the inside cloth mode of mould with the concrete through the feed inlet, this kind of pump material mode can avoid the concrete thick liquids to flow outside the mould betterly, the labour of using manpower sparingly when can the material saving, and production efficiency is higher.

A Chinese patent with an authorization publication number of CN201620567207.1 discloses a pumping material distribution device for a continuous tubular pile production line, which comprises a transmission device and a pipe die arranged on the transmission device, wherein the pipe die is provided with at least one feeding hole and at least one air outlet, and a concrete conveying mechanism is connected with the feeding hole so as to input concrete into the pipe die through the feeding hole. However, this solution has the following technical problems: it is when irritating in the pipe die, no matter be at horizontality or tilt state, it all can produce the bubble in inside, and the bubble can not in time discharge can cause the tubular pile surface to appear the gas pocket, influences the quality of tubular pile, especially during such tubular pile that has big small-bore of shaping bamboo joint stake, easy gassing and difficult discharge in large-bore section shaping portion department during pouring, cause tubular pile surface defect. Similarly, for a solid pile with a variable cross section, the joint of a large-diameter section and a small-diameter section is easy to have more surface air hole defects.

Disclosure of Invention

The invention aims to provide a feeding system for a precast pile with a variable cross section, which aims to reduce the surface quality defect of a pile body with the variable cross section.

In order to realize the purpose of the invention, the technical scheme is as follows:

the utility model provides a variable cross section precast pile feeding system, includes mould body and pump sending concrete equipment, the mould body is including linking heavy-calibre section shaping portion and small-calibre section shaping portion as an organic whole, it is a to become angle between the axis of transition face between heavy-calibre section shaping portion and the small-calibre section shaping portion and mould body, be equipped with at least one on the mould body and let the concrete enter into this internal feed inlet of mould and an at least gas vent, the feed inlet is connected with pump sending concrete equipment, what become when pump sending concrete equipment carries out the filling concrete to the mould body between mould body and the horizontal plane surely the skew angle > a.

When the mould is used for pouring concrete, the concrete is poured from one end of the mould body, the mould body forms a larger inclination angle in the pouring process, and even is directly erected, so that gas in the pouring process can upwards run out from the side edge along the inner wall of the mould body, and particularly, for variable-section hollow piles or solid piles such as bamboo joint piles and the like, the phenomenon that bubbles are accumulated in a large-caliber section to affect the quality of a pipe pile is avoided.

Its reasonable in design, the cloth is convenient, and the thick liquids can not practiced thrift the raw materials outside the mould when the cloth, and the feed inlet directly sets up on the fixed plate, conveniently connects pump sending concrete equipment on the one hand, and on the other hand conveniently connects fixed establishment, need not plug up the feed inlet when stretch-draw, has improved production efficiency.

Preferably, the device further comprises a die lifting device, wherein the die lifting device enables the die body to be converted from a horizontal state into an inclined state or an upright state, and one end of the feed inlet of the die body is arranged above the die lifting device.

Preferably, the mold lifting device comprises a guide rail and at least two aerial cranes arranged on the guide rail, wherein one aerial crane drives one end of the mold body close to the feed port to ascend in a rope retracting mode, the other aerial crane drives the other end of the mold body to descend in a rope retracting mode, and the front aerial crane and the rear aerial crane are close to each other towards the middle in the process so that the mold body is converted from a flat state to an inclined state or a vertical state.

Preferably, the die lifting device comprises a lifter connected with one end, close to the feed port, of the die body, and the lifter drives one end, close to the feed port, of the die body to ascend or descend.

Preferably, the die lifting device comprises a crane positioned above the die body, and the crane is connected with one end of the die body close to the feed port to drive one end of the die body close to the feed port to ascend or descend; the die body is inclined or erected by arranging the die lifting device, the structure is simple, and the die is convenient and fast to realize.

Preferably, one end of the die body is provided with a tensioning plate, the other end of the die body is provided with a fixing plate, the feeding hole is located on the fixing plate, and the exhaust hole is located on the side wall of the die body and communicated with the inside of the die body.

Preferably, the feed inlet is connected with the concrete pumping equipment through a pipeline.

Preferably, the tensioning plate and the fixing plate are detachably connected with two ends of the die body respectively.

Preferably, the mould further comprises a supporting device, and the supporting device is used for supporting the mould body and driving the mould body to move backwards when the mould body is in the vertical state.

Preferably, the supporting device comprises a bearing assembly for bearing the mould body and stop assemblies arranged at two sides of the mould body for keeping the mould body in an upright state.

In summary, compared with the prior art, the invention has the following advantages:

when the material pumping device pumps materials, the die is in an inclined state, and the cutting angle of the die is larger than the included angle between the transition surface between the large-diameter section forming part and the small-diameter section forming part of the inner wall of the die and the axis of the die, so that bubbles generated during material pumping can smoothly rise to the exhaust port of the die to be discharged without accumulating in the large-diameter section forming part of the inner wall of the die, and the product quality defect caused by the bubbles is reduced.

In order to make the aforementioned and other objects, features and advantages of the invention comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

FIG. 1 is a schematic view of a mold body in a horizontal state for filling with concrete;

FIG. 2 is a schematic view of the mold body being filled with concrete at an inclination angle a 2;

FIG. 3 is a schematic view of the mold body being filled with concrete at an inclination angle a 3;

FIG. 4 is a schematic view of the mold body in an upright position for filling with concrete;

FIG. 5 is an enlarged schematic view of FIG. 2 at A;

FIG. 6 is an enlarged view of FIG. 3 at B;

FIG. 7 is a schematic view of a crane lifting the die body to an inclined state;

FIG. 8 is a schematic view of the gantry crane lifting the mold body into an upright position;

FIG. 9 is an enlarged view at C of FIG. 8;

FIG. 10 is a schematic view showing a crane lifting one end of the die body to be inclined;

FIG. 11 is a schematic view of the lifter lifting one end of the die body to a tilted state;

FIG. 12 is a schematic view of the support device supporting the mold body;

fig. 13 is an enlarged schematic view of fig. 12 at D.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of the present invention, and it is obvious that the described embodiments are a part of the embodiments of the present invention, and not all of the embodiments.

The mould body 1 is in an inclined state, the oblique cutting angle of the mould body is larger than the included angle between the axis of the mould body 1 and the transition surface between the large-diameter section forming part and the small-diameter section forming part of the inner wall of the mould, wherein the related angle relations in the attached drawings 1 to 4 are as follows: the oblique cutting angle of the die body 1 in fig. 1 is a1, and a1 is 0 degrees, that is, the die body 1 is in a horizontal state; the cutting angle of the die body 1 in FIG. 2 is a2, and a2 < a; the cutting angle of the die body 1 in FIG. 3 is a3, and a2 < a3 < a; in fig. 4, the die body 1 has a cut angle a4, a4 > a, and a4 is 90 degrees, that is, the die body 1 is in an upright state; examples of the foregoing are exemplified below.

Example one

As shown in fig. 1, a feeding system for precast pile with variable cross section comprises a mould body 1 and a pumping concrete device 2, wherein the pumping concrete device is not innovative in the present invention and is simply shown in a figure, and the concrete structure can be seen in the prior art documents known to those skilled in the art, the mould body 1 is generally formed by two or more split moulds, and the two split moulds are matched with end plates (such as a fixed plate, a tension plate and the like) at two ends to obtain a mould cavity for forming the precast pile; the inner wall of the die body 1 comprises a large-caliber section forming part 11 and a small-caliber section forming part 12 which are connected into a whole, so that variable cross-section components comprising a large-caliber section and a small-caliber section can be correspondingly formed, wherein the large-caliber section forming part 11 and the small-caliber section forming part 12 can be obtained by forming corresponding grooves/bosses on the inner wall of a template, and can also be obtained by additionally arranging cushion blocks arranged at intervals. The mould body 1 is provided with at least one feed inlet 3 for allowing concrete to enter the mould body 1 and at least one exhaust port 4, and the exhaust port 4 is used for discharging hepatitis B and is arranged on the upper mould split body so as to be beneficial to gas discharge; the feed inlet 3 is connected with the concrete pumping equipment 2, and when the concrete pumping equipment 2 fills the concrete into the mould body 1, the mould body 1 is in a horizontal state, and the large-caliber section forming part 11 can accumulate more air bubbles to influence the product quality (the analysis will be carried out later on) in the state.

In this embodiment, the cross section that the mould body can be circular, square or other shapes, and the mould body can be put into to the steel reinforcement cage, and the mould body forms a relative confined space, and the concrete gets into from the feed inlet, and the air in the mould body is extruded from the gas vent by the concrete, because inside the concrete directly enters into the mould body, consequently can not cause the concrete to run out from the mould body, makes production efficiency obviously improve, has also practiced thrift the raw materials, has improved product quality. For concrete, a mass flow meter can be arranged between the feeding hole and the concrete pumping equipment for controlling or directly controlling the concrete input amount of the concrete pumping equipment; the concrete pumping equipment can be a structure that a pump truck and a high-pressure pump are connected with a concrete storage tank, and the like, and can also be a structure that the concrete storage tank is directly connected with a feeding hole.

Further, both ends of mould body 1 are fixed with a stretch-draw board 6 and a fixed plate 7 respectively, through setting up subassembly such as stretch-draw board 6 and stretch-draw equipment for the reinforcing bar in the die cavity carries out the prestressing force and stretches, so that improves precast pile product quality. The feeding port 3 is positioned on the fixing plate 7, so that the concrete is conveniently pumped by the concrete pumping equipment 2; the exhaust port 4 is positioned on the side wall of the die body 1 and communicated with the inside of the die body 1, so that gas in the die cavity can be exhausted conveniently.

Further, the feed port 3 is connected with the concrete pumping equipment 2 through a pipeline 8, the concrete pumping equipment 2 can be arranged at a high position and positioned above the mould body 1, and is filled into the mould body 1 through the pipeline 8 and the feed port 3 after the mould body 1 is in place, and can be arranged at a low position and positioned at one side of the mould body 1 to pump concrete into the mould body 1 through the long pipeline 8; it is furthermore preferred that the number of feed openings 3 is one and located in the center of the stationary plate 7.

Furthermore, the tensioning plate 6 and the fixing plate 7 are detachably connected with two ends of the die body 1 respectively, the tensioning plate 6 is used for connecting tensioning equipment, and the fixing plate 7 is used for connecting a reinforcement cage, so that the end part of the reinforcement cage is fixed when the tensioning equipment is used for tensioning the reinforcement cage, and one end of the reinforcement cage is fixed and the other end of the reinforcement cage is tensioned; after the material filling is finished, the pipeline 8 and the feed inlet 3 are detached and separated, and the feed inlet 3 is connected with the fixing piece, so that the fixing effect can be achieved during tensioning, and other equipment is not required to be found to block the feed inlet 3; certainly, in order to further remove the air bubbles in the mold body 1 completely, a vibration device may be further provided, and the vibration device is used to vibrate the mold body 1 after the filling is completed to further remove the air bubbles.

The working principle of the embodiment is as follows: putting into of steel reinforcement cage mould body 1 in, thereby stretch-draw board 6 and fixed plate 7 are placed respectively and are made 1 inner wall of mould body form an inclosed cloth interval at mould body 1's both ends, mould body 1 becomes the horizontality, inlet 3 connects pump sending concrete equipment 2 like hose or bellows through the pipeline, start pump sending concrete equipment 2 and make the concrete enter into mould body 1 inside through inlet 3, 1 inside air of mould body is discharged through gas vent 4 after the concrete compression, keep atmospheric pressure all the time, thereby accomplish the cloth process.

After concrete conveying is completed, the air release port 4 is blocked, the pumping concrete equipment 2 is separated from the feed port 3, the pipeline 8 is removed, the fixed plate 7 is connected with the fixing device, the tensioning plate 6 is connected with the tensioning equipment to tension the steel reinforcement cage, and the tensioning process can be performed after the tensioning is completed.

In this example, production tests were conducted under the above conditions to find that bubbles were present at the position of the region 10 of k1 in each of the large-caliber segment molding parts, i.e., a large bubble region was present throughout the top of the large-caliber segment molding part.

Example two

The present embodiment has substantially the same structure and operation principle as the first embodiment, except that, as shown in fig. 2 and 5, when the pumping concrete equipment 2 fills the mold body 1 with concrete, the mold body 1 has a cutting angle a2 with respect to the horizontal plane.

In this example, production tests were conducted under the above conditions to find that bubbles were present at the position of the k2 region 20 of the partially large-caliber segment molding portion, but the bubble region was significantly reduced.

EXAMPLE III

The present embodiment has substantially the same structure and operation principle as the second embodiment, except that, as shown in fig. 3 and 6, when the pumping concrete equipment 2 fills the mold body 1 with concrete, the cut angle of the mold body 1 to the horizontal plane is a 3.

In the present example, production tests were conducted under the above-described conditions to find that bubbles were present at the position of the k3 region 30 of the partially large-caliber segment molding portion, but the bubble region was further reduced.

Example four

The present embodiment has substantially the same structure and operation principle as the third embodiment, except that, as shown in fig. 4, the die body 1 forms a cutting angle a4 with the horizontal plane when the die body 1 is filled with concrete.

In this embodiment, the bubble accumulation region is not present. Therefore, gas in the pouring process can upwards run out from the side edge along the inner wall of the mould body, and particularly for variable-section hollow piles or solid piles such as bamboo-joint piles, the quality of the pipe pile is prevented from being influenced by accumulation of bubbles in a large-caliber section. Production tests carried out under the above conditions found that no bubbles were present in the large-caliber segment molding portion.

EXAMPLE five

The structure and the working principle of the present embodiment are substantially the same as those of the fourth embodiment, except that, as shown in fig. 7 to 10, 12 and 13, the present embodiment further includes a mold lifting device 5, the mold lifting device 5 changes the mold body 1 from the horizontal state to the inclined state or the vertical state, and one end of the feed opening 3 of the mold body 1 is located above.

Specifically, the mold lifting device 5 comprises a guide rail 51 and at least two lifting devices 52 arranged on the guide rail 51, the front lifting device 52 drives one end of the mold body 1 close to the feed port 3 to ascend in a rope retracting manner, the rear lifting device 52 drives the other end of the mold body to descend in a rope retracting manner, and the front lifting device 52 and the rear lifting device 52 are close to each other towards the middle in the process so that the mold body 1 is converted from a flat state to an inclined state or a vertical state; the crane 52 comprises a steel wire rope 521, a traveling trolley 522 and a set of take-up and pay-off rollers 523 arranged on the traveling trolley 522 and used for taking up and pay-off the steel wire rope 521, wherein the traveling trolley 522 can be driven to move by a power mechanism which is arranged on the traveling trolley 522, and certainly can be driven to move by external power. During operation, the walking trolley moves on the guide rail through the steel wire rope hanging die, the steel wire rope is correspondingly wound and unwound by the winding and unwinding roller set when the steel wire rope hanging die enters the feeding station, the die is in an inclined vertical state for feeding, and the die is restored to the original state after feeding is completed, so that the die and the internal semi-finished pile are conveyed to a target area for stacking.

Further, the embodiment further comprises a supporting device 9, and the supporting device 9 is used for supporting the die body 1 and driving the die body to move backwards when the die body is in the vertical state.

Further, the supporting device 9 comprises a bearing assembly 91 for bearing the die body 1 and stop block assemblies 92 arranged at two sides of the die body 1 for keeping the die body 1 in an upright state; the movement of the support device 9 together with the mould body 1 can be driven by providing a power member on the carrier assembly 91, but of course the movement of the support device 9 together with the mould body 1 can also be realized by providing a travel member on the stop assembly 92.

Further, the bearing assembly 91 comprises a bearing trolley 912 slidably arranged on the slide rail 911.

Further, dog subassembly 92 includes dog group 921, dog group 921 is provided with at least a set ofly along the direction of height of mould body 1, and this dog group 921 is including setting up left dog 923 on left branch frame 922 and setting up right dog 925 on right branch frame 924, left side dog 923 and right dog 925 cooperate to stretch out to mould body 1 direction and carry out the centre gripping to mould body 1.

The working principle of the embodiment is as follows: the mould body 1 is put into to the steel reinforcement cage, thereby stretch-draw board 6 and fixed plate 7 are placed respectively and are made 1 inner wall of mould body form an inclosed cloth interval at the both ends of mould body 1, mould body 1 becomes the state of erectting under the effect of aviation crane 52, feed inlet 3 passes through the pipeline and connects pump sending concrete equipment 2 such as hose or bellows, start pump sending concrete equipment 2 and make the concrete enter into inside the mould body 1 through feed inlet 3, the air of mould body 1 inside is discharged through exhaust port 4 after being compressed by the concrete, atmospheric pressure is kept throughout, thereby accomplish the cloth process.

In the embodiment, production tests are carried out under the conditions to find that bubbles are hardly present, so that the bubble defects on the surface of the pile body are very few, and the quality of the surface of the pile body is greatly improved.

EXAMPLE six

The structure and the working principle of the present embodiment are substantially the same as those of the fifth embodiment, except that, as shown in fig. 11, the mold lifting device 5 includes a lifter 53 connected to one end of the mold body 1 near the feed opening 3, and the lifter 53 drives one end of the mold body 1 near the feed opening 3 to ascend or descend.

The working principle of the embodiment is as follows: one end of the mould body 1 close to the feed inlet 3 is lifted upwards under the action of the lifter 53 until the mould body 1 is lifted to be in an upright state, and then the concrete pumping device 2 pumps the concrete into the mould body 1 through the pipeline 8 and the feed inlet 3.

EXAMPLE seven

The structure and the working principle of the present embodiment are substantially the same as those of the sixth embodiment, except that, as shown in fig. 10, further, the mold lifting device 5 includes a crane 54 located above the mold body 1, and the crane 54 is connected to one end of the mold body 1 near the feed opening 3 to drive one end of the mold body near the feed opening 3 to ascend or descend.

The working principle of the embodiment is as follows: one end of the mould body 1 close to the feed inlet 3 is lifted upwards under the action of the crane 54 until the mould body 1 is in an upright state, and then the concrete pumping device 2 pumps the concrete into the mould body 1 through the pipeline 8 and the feed inlet 3.

Although the present invention has been described with reference to the preferred embodiments, it should be understood that various changes and modifications can be made therein by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. A charging system for a precast pile with a variable cross section comprises a mould body (1) and a concrete pumping device (2), the inner wall of the die body (1) comprises a plurality of large-caliber section forming parts (11) and small-caliber section forming parts (12) which are connected into a whole, an angle a is formed between the transition surface between the large-caliber section forming part (11) and the small-caliber section forming part (12) and the axis of the die body (1), the mould body (1) is provided with at least one feed inlet (3) and at least one exhaust port (4) for allowing concrete to enter the mould body (1), the feed inlet (3) is connected with concrete pumping equipment (2), the concrete filling machine is characterized in that a cut-off angle between the mould body (1) and a horizontal plane is larger than a when the concrete pumping equipment (2) fills the mould body (1) with concrete.

2. The system for charging a precast pile with a variable cross section according to claim 1, further comprising a mold lifting device (5), wherein the mold lifting device (5) changes the mold body (1) from a horizontal state to an inclined state or an upright state, and the feed opening (3) of the mold body (1) is at an upper end.

3. The variable cross-section precast pile charging system according to claim 2, wherein the mold lifting device (5) comprises a guide rail (51) and at least two aerial cranes (52) arranged on the guide rail (51), one aerial crane (52) drives one end of the mold body (1) close to the feeding hole (3) to ascend in a rope retracting manner, the other aerial crane (52) drives the other end of the mold body to descend in a rope retracting manner, and the front aerial crane (52) and the rear aerial crane (52) are drawn together towards the middle in the process to enable the mold body (1) to be converted from a flat state to an inclined state or a vertical state.

4. The system for charging a precast pile with a variable cross section according to claim 2, wherein the mold lifting device (5) comprises a lifter (53) connected with one end of the mold body (1) close to the feeding hole (3), and the lifter (53) drives one end of the mold body (1) close to the feeding hole (3) to ascend or descend.

5. The system for charging a precast pile with a variable cross section according to claim 2, wherein the mould lifting device (5) comprises a crane (54) positioned above the mould body (1), and the crane (54) is connected with one end of the mould body (1) close to the feeding hole (3) to drive one end of the mould body close to the feeding hole (3) to ascend or descend.

6. A loading system for precast pile with variable cross section according to claim 1, wherein one end of the mould body (1) is provided with a tension plate (6), the other end is provided with a fixed plate (7), the feeding port (3) is positioned on the fixed plate (7), and the exhaust port (4) is positioned on the side wall of the mould body (1) and communicated with the inside of the mould body (1).

7. A loading system for precast piles with variable cross-section according to claim 6, characterized in that the feed inlet (3) is connected with the concrete pumping equipment (2) through a pipe (8).

8. The system for charging a precast pile with a variable cross section according to claim 6, wherein the tension plate (6) and the fixing plate (7) are detachably connected with both ends of the die body (1), respectively.

9. A system for charging a precast pile with a variable cross section according to claim 2, characterized by further comprising a supporting means (9), wherein the supporting means (9) is used for supporting the mould body (1) and moving it backwards when it is in the erected state.

10. A system for charging a precast pile with a variable cross section according to claim 9, characterized in that the supporting means (9) comprises a carrying assembly (91) for carrying the mould body (1) and a stopper assembly (92) provided at both sides of the mould body (1) for keeping the mould body (1) in an upright state.