阅读说明：本技术 一种用于成型变截面桩的模具 (It is a kind of for forming the mold of non-uniform pile ) 是由 周兆弟 于 2019-04-30 设计创作，主要内容包括：本发明公开了一种用于成型变截面桩的模具,该模具的模腔沿长度方向形成至少一正多边形粗孔段和至少一正多边形细孔段,且所述正多边形粗孔段和所述正多边形细孔段相连通；其中,所述正多边形细孔段的孔壁开设有至少一凹槽；所述模具于所述正多边形粗孔段的横截面内,孔壁至所述模具中轴线的最短直线距离为D1；所述模具于所述正多边形细孔段的横截面内,孔壁至所述模具中轴线的最短直线距离为D2,且D1和D2之间的差值大于所述凹槽的槽深。此种用于成型变截面桩的模具具有结构简单的优点,且能够制作成型具有较佳抗拔承载性能变截面桩的需求。(The invention discloses a kind of for forming the mold of non-uniform pile, and the die cavity of the mold forms an at least regular polygon coarse pore section and at least a regular polygon pore section along its length, and the regular polygon coarse pore section is connected with the regular polygon pore section；Wherein, the hole wall of the regular polygon pore section offers an at least groove；For the mold in the cross section of the regular polygon coarse pore section, the shortest straight line distance of hole wall to the mold central axes is D1；The mold is in the cross section of the regular polygon pore section, and the shortest straight line distance of hole wall to the mold central axes is D2, and the difference between D1 and D2 is greater than the groove depth of the groove.Such mold for forming non-uniform pile has the advantages that structure is simple, and can make the demand that molding has preferable resistance to plucking load-carrying properties non-uniform pile.)

1. a kind of for forming the mold of non-uniform pile, which is characterized in that the die cavity of the mold is formed at least along its length One regular polygon coarse pore section and at least a regular polygon pore section, and the regular polygon coarse pore section and the regular polygon pore Section is connected；

Wherein, the hole wall of the regular polygon pore section offers an at least groove；

The mold is in the cross section of the regular polygon coarse pore section, the shortest straight line distance of hole wall to the mold central axes For D1；

The mold is in the cross section of the regular polygon pore section, the shortest straight line distance of hole wall to the mold central axes For D2, and the difference between D1 and D2 is greater than the groove depth of the groove.

2. according to claim 1 for forming the mold of non-uniform pile, which is characterized in that the length direction of the groove with The length direction of the mold is consistent, and the groove is in integral type or discontinuous.

3. according to claim 2 for forming the mold of non-uniform pile, which is characterized in that the regular polygon coarse pore section Hole wall is equipped with multiple circumferentially successively end to end flat faces, and at least one flat face indent is thin in the regular polygon The hole wall of hole section.

4. according to claim 3 for forming the mold of non-uniform pile, which is characterized in that the die cavity of the mold is along length Direction forms multiple regular polygon coarse pore sections and multiple regular polygon pore sections, each regular polygon coarse pore section and Each regular polygon pore section is alternately arranged, and, the hole wall of the regular polygon coarse pore section and the adjacent regular polygon are thin Shaft shoulder face is formed between the hole wall of hole section, the regular polygon coarse pore section and the regular polygon pore section are square hole section, And the hole wall of the regular polygon pore section is in opening up an at least groove on each flat face；

The groove depth of the groove between shortest straight line distance D1 and shortest straight line distance D2 difference 1/4 to 3/4.

5. according to claim 4 for forming the mold of non-uniform pile, which is characterized in that the mold includes:

First template, cross section are L-shaped；

Second template is connect with the one side wall of the first template；

Third template, another side wall of connection first template and second template；

First end plate, for blocking the one end formed after the first template, the second template and third template are closed up；And

Second end plate, for blocking the other end formed after the first template, the second template and third template are closed up.

6. according to claim 5 for forming the mold of non-uniform pile, which is characterized in that the mold further includes stretching machine Structure；

Wherein, the tensioning mechanism includes:

Stretch board is connected close to second end plate and axially between the first end plate by the rigid cage for being built in the die cavity It connects；

Screw rod, partially protrudes into the die cavity and the stretch board that is screwed on；And

Tensioning nut, the outside of Yu Suoshu die cavity are screwed on the screw rod.

7. according to claim 5 for forming the mold of non-uniform pile, which is characterized in that by first end plate to second end In the rectilinear direction of plate, the cross sectional dimensions of each regular polygon pore section is sequentially increased and/or the cross of each regular polygon coarse pore section Sectional dimension is sequentially increased；

Alternatively, the cross sectional dimensions of each regular polygon pore section is successively on the rectilinear direction by the second end plate to first end plate Increase and/or the cross sectional dimensions of each regular polygon coarse pore section is sequentially increased.

8. according to claim 1 for forming the mold of non-uniform pile, which is characterized in that a cell wall of the groove or two Cell wall is provided with 1 °~45 ° of draft angle；At least one rib is arranged in the hole wall of at least one regular polygon coarse pore section, described Rib is provided with 1 °~45 ° of draft angle.

9. according to claim 8 for forming the mold of non-uniform pile, which is characterized in that the regular polygon pore section Four grooves are arranged around central axes in hole wall at equal intervals；

More ribs are arranged around central axes interval in the hole wall of the regular polygon coarse pore section, and in the length direction of the mold On, the rib and the groove are staggered in arrangement.

10. according to claim 1 for forming the mold of non-uniform pile, which is characterized in that

The mold includes:

First template, cross section are L-shaped；

Second template is connect with the one side wall of the first template；

Third template, another side wall of connection first template and second template；

First end plate, for blocking the first end formed after the first template, the second template and third template are closed up；And

Second end plate, for blocking the second end formed after the first template, the second template and third template are closed up；

Wherein, the first template and the second template are detachably connected by multiple die bolts, and the first template and third template are by multiple Die bolt is detachably connected, and the second template and third template are detachably connected by multiple die bolts；

At least one rib, and shortest straight line distance D1 and shortest straight line is arranged in the hole wall of at least one regular polygon coarse pore section Difference between distance D2 is greater than the height of the rib；

The slot bottom of the groove is arc surface；

The cell wall of the groove is connect with gullet transition.

Technical field

The present invention relates to pipe pile die fields more particularly to a kind of for forming the mold of non-uniform pile.

Background technique

Be under precast reinforced concrete piles ordinary circumstance factory by mold precast come circle stake either square pile, Transported it on the place where stake position again, it is hammered, the technological measures such as static pressure are subject to a degree of application On the basis of so that pile body enters on scheduled position, for other stakes, precast reinforced concrete piles and it is real Border shows that weight bearing power is stronger, sedimentation and deformation is smaller, easy construction, cheap and efficiency ratio during applying The advantages that higher, thus a large amount of use has been obtained in pile foundation engineering.Existing concrete prefabricated pile is usually each cross section shape Shape and size straight stake all the same, still, this generally existing concrete amount of prefabricated pile is big, the problem of anti-pulling capacity difference.

If Chinese utility model patent (CN 206796169U) discloses a kind of prefabricated pile die of bumps, the bumps are prefabricated Pile die includes external mold and moulding mould, which includes upper die and lower die, and head plate is located at the both ends of upper die and lower die, upper mold and Horizontal bar and longitudinal rib are respectively equipped on the outer wall of lower die, horizontal bar intersects and is fixedly connected with longitudinal rib, the mouth of upper mold There are two upper shutterings being parallel to each other in portion along the axial restraint of upper mold, and the oral area of lower die has two phases along the axial restraint of lower die Mutually parallel lower shuttering, when upper die and lower die molding, upper shuttering is corresponding with lower molding Board position and is tied with molding locking Structure locking.

Further disclosed, moulding mould above-mentioned includes the concave-convex mould board being separately fixed on upper die and lower die inner wall, And the concave-convex mould board in upper mold is corresponding with the position of the concave-convex mould board in lower die.The four edges of concave-convex mould board turn over Side, the flange outer wall on concave-convex mould board are bonded with the inner wall of upper die and lower die, and in upper mold and/or lower die at least two pieces it is recessed Convex mould board makes to form rib molding between two pieces of adjacent concave-convex mould boards along upper mold and/or being provided at circumferentially spaced for lower die Chamber.After upper die and lower die molding, the circumferential direction by four pieces of concave-convex mould boards along mold is arranged, and forms four rib forming cavities, makes When making prefabricated pile, rib forming cavity is presented as the prefabricated muscle that prefabricated pile outer wall outwardly protrudes, and obtains a kind of high-intensitive with prefabricated muscle Prefabricated pile.

Although the above-mentioned prefabricated pile die of bumps, which can make molding by concave-convex mould board, improves resistance to plucking load-carrying properties Non-uniform pile, still, the prefabricated pile die of the bumps have that structure is complicated；Also, due to the flange on concave-convex mould board Outer wall is bonded with the inner wall of upper die and lower die, this is allowed for outside the prefabricated muscle outer end face of moulding prefabricated stake and the major diameter section of prefabricated pile Wall surface is flush, then, when using prefabricated pile, surrounding soil is separated into multiple isolated arc blocks by prefabricated muscle, this just makes Arc block be bonded with the outside wall surface of path section it is not close, thus cause between pile body and surrounding soil relative friction forces raising have Limit, so that the resistance to plucking load-carrying properties raising of concave-convex prefabricated pile is limited.

Summary of the invention

In view of the above-mentioned deficiencies in the prior art, it is an object of the present invention to a kind of simple novel die of structure be provided, to meet Production molding has the demand of preferable resistance to plucking load-carrying properties non-uniform pile.

To achieve the purpose of the present invention, the invention adopts the following technical scheme:

It is a kind of for forming the mold of non-uniform pile, the die cavity of the mold forms an at least regular polygon along its length Coarse pore section and at least a regular polygon pore section, and the regular polygon coarse pore section is connected with the regular polygon pore section； Wherein, the hole wall of the regular polygon pore section offers an at least groove；The mold is in the regular polygon coarse pore section In cross section, the shortest straight line distance of hole wall to the mold central axes is D1；The mold is in the regular polygon pore section Cross section in, the shortest straight line distance of hole wall to the mold central axes is D2, and the difference between D1 and D2 be greater than it is described The groove depth of groove.

Further, the length direction of the groove is consistent with the length direction of the mold, and the groove is in one Body formula or discontinuous.

Further, the hole wall of the regular polygon coarse pore section is equipped with multiple circumferentially successively end to end flat faces, And at least one the flat face indent in the hole wall of the regular polygon pore section.

Further, the die cavity of the mold forms multiple regular polygon coarse pore sections and multiple described along its length Regular polygon pore section, each regular polygon coarse pore section and each regular polygon pore section are alternately arranged, and, it is described just more It is formed with shaft shoulder face between the hole wall of side shape coarse pore section and the hole wall of the adjacent regular polygon pore section, the regular polygon is thick Hole section and the regular polygon pore section are square hole section, and the hole wall of the regular polygon pore section is opened on each flat face If an at least groove；The groove depth of the groove between shortest straight line distance D1 and shortest straight line distance D2 difference 1/4 to 3/ 4。

Further, the mold includes: the first template, cross section are L-shaped；Second template, the side with the first template Wall connection；Third template, another side wall of connection first template and second template；First end plate, for blocking the The one end that one template, the second template and third template are formed after closing up；And second end plate, for block the first template, The other end that second template and third template are formed after closing up.

Further, the mold further includes tensioning mechanism；Wherein, the tensioning mechanism includes: stretch board, close to described Second end plate and between the first end plate by be built in the die cavity rigid cage axially connect；Screw rod partially protrudes into institute It states in die cavity and the stretch board that is screwed on；And tensioning nut, the outside of Yu Suoshu die cavity are screwed on the screw rod.

Further, in the rectilinear direction by first end plate to the second end plate, the cross section of each regular polygon pore section Size is sequentially increased and/or the cross sectional dimensions of each regular polygon coarse pore section is sequentially increased；Alternatively, by the second end plate to In the rectilinear direction of end plate, the cross sectional dimensions of each regular polygon pore section is sequentially increased and/or each regular polygon coarse pore section Cross sectional dimensions be sequentially increased.

Further, a cell wall of the groove or two cell walls are provided with 1 °~45 ° of draft angle.

Further, at least one rib, the rib setting is arranged in the hole wall of at least one regular polygon coarse pore section There is 1 °~45 ° of draft angle.

Further, four grooves are arranged around central axes in the hole wall of the regular polygon pore section at equal intervals；Institute More ribs are arranged around central axes interval in the hole wall for stating regular polygon coarse pore section, and on the length direction of the mold, institute It states rib and the groove is staggered in arrangement.

Further, the mold includes: the first template, cross section are L-shaped；Second template, the side with the first template Wall connection；Third template, another side wall of connection first template and second template；First end plate, for blocking the The first end that one template, the second template and third template are formed after closing up；And second end plate, for blocking the first mould The second end that plate, the second template and third template are formed after closing up；Wherein, the first template and the second template are by multiple moldings Bolt is detachably connected, and the first template and third template are detachably connected by multiple die bolts, the second template and third template It is detachably connected by multiple die bolts；At least one rib is arranged in the hole wall of at least one regular polygon coarse pore section, and most Difference between short straight line distance D1 and shortest straight line distance D2 is greater than the height of the rib；The slot bottom of the groove is circular arc Face；The cell wall of the groove is connect with gullet transition.

In mold provided by the present invention for forming non-uniform pile, the die cavity of mold, which is along its length formed, to be connected Regular polygon coarse pore section and regular polygon pore section, such mould structure design are recessed without using what is referred in the prior art Convex mould board can simply, easily make molding regular polygon non-uniform pile, and the overall structure that mold greatly improved is strong Degree, prevents die deformation.

In addition, the hole wall of regular polygon pore section is in every in the mold provided by the present invention for forming non-uniform pile An at least groove is opened up on one flat face, and the groove depth of groove is most short less than regular polygon coarse pore section hole wall to mold central axes Linear distance and regular polygon pore hole wall to mold central axes shortest straight line distance difference, this allows for change after molding The height of projection of the upper prefabricated muscle of section stake is less than thick pile cutoff radius value and thin pile cutoff radius value thickness difference in change on concrete tubular pile Value, then, after piling construction, the surrounding soil of thin pile cutoff encompasses an overall structure, so that surrounding soil is more closely bonded The outside wall surface of thin pile cutoff, therefore, thin pile cutoff and contacts area more between surrounding soil and it is closer be bonded effect, improve Frictional force between pile body and surrounding soil, so as to substantially enhance the resistance to plucking load-carrying properties of non-uniform pile.

Detailed description of the invention

To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment Attached drawing is briefly introduced, it should be apparent that, drawings in the following description are only some embodiments of the invention, for this For the those of ordinary skill in field, under the premise of not making the creative labor property, it can also be obtained according to these attached drawings other Attached drawing.

Fig. 1 is in embodiment one for forming the perspective view of the mold of non-uniform pile；

Fig. 2 is in embodiment one for forming the schematic diagram of internal structure of the mold of non-uniform pile；

Fig. 3 is to remove the top view after third template for forming the mold of non-uniform pile in embodiment one；

Fig. 4 is the cross-sectional view of the A-A hatching line along Fig. 3；

Fig. 5 is the enlarged drawing of letter b corresponding part in Fig. 3；

Fig. 6 is the cross-sectional view of the C-C hatching line along Fig. 1, is being used to form the mold of non-uniform pile just in corresponding embodiment one The sectional view of polygon coarse pore section；

Fig. 7 is another for forming the sectional view of the regular polygon coarse pore section of the mold of non-uniform pile in embodiment one；

Fig. 8 is the sectional view of the regular polygon coarse pore section for the mold that another in embodiment one is used to form non-uniform pile；

Fig. 9 is also a kind of for forming the sectional view of the regular polygon coarse pore section of the mold of non-uniform pile in embodiment one；

Figure 10 is that the mold for forming non-uniform pile of discontinuous groove in embodiment one removes bowing after third template View；

Figure 11 is that the mold for forming non-uniform pile of another discontinuous groove in embodiment one removes third template Top view afterwards；

Figure 12 is the sectional view of the regular polygon pore section of the equal indent of each flat face of regular polygon coarse pore section in embodiment one；

Figure 13 is the sectional view of the regular polygon pore section of 3 flat face indents of regular polygon coarse pore section in embodiment one；

Figure 14 is the sectional view of the regular polygon pore section of 2 flat face indents of regular polygon coarse pore section in embodiment one；

Figure 15 is the sectional view of the regular polygon pore section of 1 flat face indent of regular polygon coarse pore section in embodiment one；

Figure 16 is in embodiment two for forming the schematic diagram of internal structure of the mold of non-uniform pile；

Figure 17 is that mold removes after third template in the cross-sectional view of regular polygon coarse pore section in embodiment two；

Figure 18 is in embodiment two for forming the mold of non-uniform pile in the cross-sectional view of regular polygon coarse pore section；

Figure 19 is that another mold for forming non-uniform pile is cutd open in the section of regular polygon coarse pore section in embodiment two View；

Figure 20 is that another in embodiment two is cutd open for forming the mold of non-uniform pile in the section of regular polygon coarse pore section View；

Figure 21 is that also a kind of mold for forming non-uniform pile is cutd open in the section of regular polygon coarse pore section in embodiment two View；

Figure 22 is in embodiment three for forming the schematic diagram of internal structure of the mold of non-uniform pile.

In attached drawing:

100, mold；

101, die cavity；101a, regular polygon coarse pore section；101b, regular polygon pore section；101c, shaft shoulder face；It is 101d, recessed Slot；101e, wedge groove section；101f, elliptical table shape slot section；101g, the first flat face；101h, the second flat face；101i, third Flat face；101j, the 4th flat face；101k, rib；

200, mold；

300, mold；301a, the first regular polygon coarse pore section；301b, the second regular polygon coarse pore section；301c, third are just Polygon coarse pore section；302a, the first regular polygon pore section；302b, the second regular polygon pore section；

1, the first template；

2, the second template；

3, third template；

4, first end plate；

5, the second end plate；

6, tensioning mechanism；61, stretch board；62, screw rod；63, tensioning nut.

Specific embodiment

In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with attached drawing of the invention Technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is the present invention one Divide embodiment, instead of all the embodiments.

<embodiment one>

As depicted in figs. 1 and 2, present embodiments provide it is a kind of for forming the mold 100 of non-uniform pile, mold 100 Die cavity 101 forms multiple regular polygon coarse pore section 101a and multiple regular polygon pore section 101b along its length, each just polygon Shape coarse pore section 101a and each regular polygon pore section 101b are alternately arranged and are interconnected.Certainly, in mold provided by the invention In, the die cavity 101 of mold forms an at least regular polygon coarse pore section 101a and at least a regular polygon pore section along its length 101b, and regular polygon coarse pore section 101a is connected with regular polygon pore section 101b.

As shown in Figures 2 to 5, the hole of the hole wall of regular polygon coarse pore section 101a and adjacent regular polygon pore section 101b Shaft shoulder face 101c is formed between wall, and on the length direction of mold 100, the hole wall of regular polygon coarse pore section 101a and described Between the 101c of the shaft shoulder face shape it is in 90 °~179 ° of angle theta.In the present embodiment, the angle theta at the both ends regular polygon coarse pore section 101a Angle value is identical, and certainly, in mold provided by the invention, the angle theta angle value at the both ends regular polygon coarse pore section 101a may be used also With the angle theta angle value formed between inequality or the hole wall and adjacent shaft shoulder face 101c of each regular polygon coarse pore section 101a It is different.

As shown in Fig. 2, Fig. 6, in the present embodiment, regular polygon coarse pore section 101a and the side of being regular polygon pore section 101b Hole section, and the hole wall of regular polygon pore section 101b is in opening up at least a groove 101d, i.e. regular polygon pore on each flat face Four groove 101d are arranged around central axes in the hole wall of section 101b at equal intervals.The length direction of groove 101d and the length of mold 100 It is consistent to spend direction.

Certainly, in mold provided by the invention, the hole wall of regular polygon pore section 101b opens up an at least groove 101d , for example, as shown in fig. 7, three groove 101d are opened up on the hole wall of regular polygon pore section 101b, as shown in figure 8, just more Two groove 101d are opened up on the hole wall of side shape pore section 101b, as shown in figure 9, opening on the hole wall of regular polygon pore section 101b If a groove 101d.

Groove 101d can also be made of the slot section of several indents, and slot section is at equal intervals or unequal interval is along mold 100 Length direction setting, for example, wedge groove section 101e, elliptical table shape slot section 101f as shown in figure 11 as shown in Figure 10, when So, slot section can also be the combination of the other shapes such as circle, triangle or above section or whole shapes, above-mentioned Slot section is equipped with the draft angle for demoulding mold 100 smoothly from molding non-uniform pile.

The hole wall of the mold 100 for being used to form non-uniform pile in the present embodiment, regular polygon coarse pore section 101a is equipped with 4 Circumferentially successively end to end first flat face 101g, the second flat face 101h, third flat face 101i and the 4th flat face 101j, as shown in figure 12, the first flat face 101g, the second flat face 101h, third flat face 101i and the 4th flat face 101j Equal indent is in the hole wall of regular polygon pore section 101b.

Certainly, not necessarily whole indents, can also part indent in the hole wall of regular polygon pore section 101b for each flat face In the hole wall of regular polygon pore section 101b, as shown in figure 13, the second flat face 101h, third flat face 101i and the 4th is straight For face 101j indent in the hole wall of regular polygon pore section 101b, the first flat face 101g flushes in regular polygon pore section 101b's Hole wall, as shown in figure 14, third flat face 101i and the 4th flat face 101j indent in the hole wall of regular polygon pore section 101b, First flat face 101g and the second flat face 101h flushes in the hole wall of regular polygon pore section 101b, as shown in figure 15, the 4th Flat face 101j indent is in the hole wall of regular polygon pore section 101b, the first flat face 101g, the second flat face 101h and third Flat face 101i flushes in the hole wall of regular polygon pore section 101b.

In addition, in the present embodiment for forming the mold 100 of non-uniform pile, which or which flat face indent is in just The hole wall of polygon pore section 101b, which or which flat face flush in the hole wall of regular polygon pore section 101b, different Regular polygon coarse pore section 101a, can be set to identical or different.

As shown in Figure 3 and Figure 4, in the present embodiment, more crucially: mold 100 is in regular polygon coarse pore section 101a's In cross section, the shortest straight line distance of hole wall to 100 central axes of mold is D1；Mold 100 is in regular polygon pore section 101b's In cross section, the shortest straight line distance of hole wall to 100 central axes of mold is D2, and shortest straight line distance D1 and shortest straight line distance Difference between D2 is greater than the groove depth H1 of groove 101d.The groove depth H1 of groove 101d is D1 and D2 as a preferred technical solution, Between difference 1/4 to 3/4.Groove 101d quantity is more, and groove 101d is deeper, then uses this molding variable cross-section of mold 100 Stake has bigger specific surface area, thus has more preferably resistance to plucking load-carrying properties.

As shown in figure 4, two cell walls of groove 101d are provided with 1 °~45 ° of draft angle α 1；Certainly, provided by the invention It can also be the cell wall setting draft angle α 1 of groove 101d under the premise of guaranteeing smoothly demoulding in mold 100；Alternatively, 1 angle value of draft angle α of upper two cell wall of groove 101d is different.In addition, demoulding causes the outside wall surface of non-uniform pile broken in order to prevent Damage, the slot bottom of groove 101d are preferably that the cell wall of arc surface and groove 101d are connect with gullet transition.

As depicted in figs. 1 and 2, mold 100 includes: the first template 1, the second template 2, third template 3, first end plate 4, Two end plates 5 and tensioning mechanism 6, wherein die cavity 101 is by the first template 1, the second template 2, third template 3, first end plate 4, Two end plates 5 surround to be formed.In the present embodiment, the second template 2 is identical with 3 specification of third template, first end plate 4 and the second end plate 5 Specification is identical.

As shown in Figures 2 to 4, specifically, the cross section of the first template 1 is L-shaped, the one of the second template 2 and the first template 1 Side wall vertically connects and is parallel to another side wall of the first template 1, and third template 3 connects another side wall and the of the first template 1 Two templates 2, first end plate 4 is for blocking the one end formed after the first template 1, the second template 2 and third template 3 are closed up (bottom righthand side in Fig. 2).Second end plate 5 aligns on the length direction of mold 100 with first end plate 4, for blocking first The other end (left upper end in Fig. 2) that template 1, the second template 2 and third template 3 are formed after closing up.Certainly, in the present invention In the mold of offer, the first template 1 can also be the perpendicular overlap joint of two pieces of templates and fix.First template 1 and the second template 2 are by figure Not shown die bolt is detachably connected in not shown multiple figures, and the first template 1 and third template 3 in multiple figures by not showing The die bolt shown is detachably connected, and the second template 2 and third template 3 are detachably connected by not shown die bolt in multiple figures It connects.

As shown in Fig. 2, tensioning mechanism 6 includes in the present embodiment: stretch board 61, screw rod 62, tensioning nut 63.Specifically, Stretch board 61 is close to the second end plate 5 and axial by being built in the rigid cage (not shown) of die cavity 101 between first end plate 4 It connects, in the present embodiment, the cross section of rigid cage is in regular polygon shape or annular shape and by more parallel rod irons and spiral The stirrup shaped by lapping of shape, certainly, rod iron and stirrup can be substituted by the bar-shaped object for meeting strength and stiffness requirement.

Specifically, screw rod 62 partially protrudes into die cavity 101 and the stretch board 61 that is screwed on, tensioning nut 63 is in die cavity 101 Outside be screwed on screw rod 62, can be by stretch board 61 to far from first end when screwing tensioning nut 63 to 5 direction of the second end plate The direction of plate 4 is tensioned rigid cage.When shaped pile needs depanning, tensioning nut first is screwed to the direction far from the second stretch board 61 63。

<embodiment two>

In the present embodiment, identical appended drawing reference is given in the part being the same as example 1, and omits identical text and say It is bright.

As shown in figure 16, relative to embodiment one, the mold 200 provided in this embodiment for forming non-uniform pile also has There is such structure:

More rib 101k are arranged around central axes interval in the hole wall of regular polygon coarse pore section 101a, specifically, just polygon The hole wall of shape coarse pore section 101a is in being arranged two rib 101k, and on the length direction of mold 200, rib on each flat face 101k and groove 101d are staggered in arrangement.Certainly, in mold provided by the invention, the hole wall of each regular polygon coarse pore section 101a is set At least one rib 101k is set, or only part regular polygon coarse pore section 101a is provided with rib 101k.It can also be A rib 101k is arranged on each flat face in the hole wall of regular polygon coarse pore section 101a.

Specifically, as shown in Figure 16 and Figure 17, in the present embodiment, between shortest straight line distance D1 and shortest straight line distance D2 Difference be greater than rib 101k height of projection H2；The two sidewalls of rib 101k are provided with 1 °~45 ° of draft angle α 2, certainly, In mold 100 provided by the invention, under the premise of guaranteeing smoothly demoulding, it can also be that the one side wall setting of rib 101k is pulled out Modular angle α 2, alternatively, 2 angle of draft angle α of the two sidewalls rib 101k is different.

Cause the outside wall surface of non-uniform pile damaged in addition, demoulding or transporting in order to prevent, the outer end face of rib 101k is preferred For arc surface, alternatively, the outer end face of rib 101k arc transition between side wall.

In the present embodiment, the both ends of die cavity 101 or one end part are in regular polygon coarse pore section 101a, then stretch board 61 The groove (not shown) of matching rib 101k is opened up on outer circle wall；If the both ends of die cavity 101 or one end part are in just Polygon pore section 101b then opens up the protrusion of matching groove 101d (in figure on the outer circle wall of the second end plate 5 and stretch board 61 It does not show).

The regular polygon pore section in the mold 200 of molding non-uniform pile also can be set in groove 101d in the present embodiment On all or part of hole wall of 101b, as shown in figs. 18-21, groove 101d be arranged in 4 hole walls whole, wherein 3, wherein On 2 or in which 1.

Groove 101d can also be made of the slot section of several indents, and slot section is at equal intervals or unequal interval is arranged, slot section It can be the combination of shapes or the above section such as wedge shape, elliptical table shape, circle, triangle or whole shapes.

The hole wall of the mold 200 for being used to form non-uniform pile in the present embodiment, regular polygon coarse pore section 101a is equipped with 4 Circumferentially successively end to end first flat face 101g, the second flat face 101h, third flat face 101i and the 4th flat face At least one of 101j, the first flat face 101g, the second flat face 101h, third flat face 101i and the 4th flat face 101j For indent in the hole wall of regular polygon pore section 101b, other flat faces flush in the outside wall surface of regular polygon pore section 101b.

Relative to embodiment one, it is not only able to reduce using the molding non-uniform pile of Mold Making provided in this embodiment mixed Solidifying soil dosage is to realize energy conservation and environmental protection, moreover it is possible to improve the specific surface area of regular polygon coarse pore section 101a, thus obtain and preferably rub Wipe power.

<embodiment three>

In the present embodiment, identical appended drawing reference is given in the part being the same as example 1, and omits identical text and say It is bright.

As shown in figure 22, relative to embodiment one, the mold 300 provided in this embodiment for forming non-uniform pile also has There is such structure:

Mold 300 for forming non-uniform pile includes at least；First regular polygon coarse pore section 301a, the second regular polygon Coarse pore section 301b, third regular polygon coarse pore section 301c, the first regular polygon pore section 302a and the second regular polygon pore Section 302b.

Wherein, on the rectilinear direction by the second end plate 5 to first end plate 4, the first regular polygon coarse pore section 301a, second The cross sectional dimensions of regular polygon coarse pore section 301b and third regular polygon coarse pore section 301c are sequentially increased, i.e., in the present embodiment The cross sectional dimensions of each regular polygon coarse pore section is sequentially increased；And first regular polygon pore section 302a and the second regular polygon it is thin The cross sectional dimensions of hole section 302b is sequentially increased, i.e., the cross sectional dimensions of each regular polygon pore section is sequentially increased.Certainly, at this It invents in the mold provided, can also be on the rectilinear direction by 4 to the second end plate 5 of first end plate, each regular polygon pore The cross sectional dimensions of section is sequentially increased, and the cross sectional dimensions of each regular polygon coarse pore section is sequentially increased.

In addition, mold provided by the invention is on the rectilinear direction by 4 to the second end plate 5 of first end plate or by the second end plate 5 are sequentially increased to the cross sectional dimensions that in the rectilinear direction of first end plate 4, can also be each regular polygon pore section, or only It is that the cross sectional dimensions of each regular polygon coarse pore section is sequentially increased.

Relative to embodiment one, mold 300 provided in this embodiment, which makes between molding non-uniform pile and pile peripheral earth, to be had There is bigger contact area, thus obtains better frictional force.

It certainly, can also be by the part in embodiment two in the mold provided by the present invention for forming non-uniform pile Technological means or whole technological means in embodiment three portion of techniques means or whole technological means combine.

The technical principle that detailed description of the preferred embodimentsthe present invention has been described is combined above, but it should be recognized that these above-mentioned Description is intended merely to explain the principle of the present invention, and cannot be construed to the specific limit to the scope of the present invention in any way System.Based on the explanation herein, those skilled in the art can associate other of the invention tools not making the creative labor Body embodiment or equivalent replacement, fall within protection scope of the present invention.