Polygonal pile forming mold and polygonal pile forming mold combination

Abstract

The present invention discloses a polygonal pile forming mold and a polygonal pile forming mold combination. The polygonal pile forming mold combination includes at least two polygonal pile forming molds, and the polygonal pile forming mold includes an open mold body and two or more combined modeling plates. The open mold body is provided with two or more notches on at least one side template along the longitudinal interval, and the side template is provided with a combined modeling plate corresponding to each notch; at least part of the plate body of the combined modeling plate can be adjusted in the lateral position relative to the side template. The polygonal pile forming mold provided by the present invention can selectively provide a forming mold cavity for a polygonal straight pile or a polygonal special-shaped pile by adjusting the relative position of the combined modeling plate relative to the side template, thereby solving the problem of poor versatility of the existing polygonal pile forming molds for pile types.

Description

Technical Field

[0001] The invention relates to a polygonal pile forming mold, in particular to a polygonal pile forming mold commonly used for polygonal straight piles and polygonal pile special-shaped piles, and a polygonal pile forming mold combination comprising the polygonal pile forming mold. Background Art

[0002] With the continuous development of building pile foundation engineering, polygonal piles are attracting more and more attention. Polygonal piles are quick to construct and have reliable quality. They are suitable for various soil layers such as clay, silt and sand, are not affected by groundwater levels, and have a large bearing capacity. Therefore, they are widely used in industrial and civil construction projects. Polygonal piles are divided into polygonal straight piles and polygonal special-shaped piles: polygonal straight piles are mostly straight piles, whose cross-section remains unchanged along the length of the pile, which is easy to process and the manufacturing quality is easy to ensure; polygonal special-shaped piles are made by setting recessed parts or protruding parts on the side walls of the polygonal straight pile body at intervals to make the pile body surface appear concave and convex.

[0003] The most commonly used polygonal piles are straight square piles and special-shaped square piles. The preparation of straight square piles and special-shaped square piles requires special molds. For example, Chinese patent 201820664603.5 discloses a precast concrete square pile mold (straight square pile mold) comprising a horizontally arranged bottom template, two side templates arranged on both sides of the bottom template and perpendicular to the bottom template, and the cross-section of the cavity surrounded by the bottom template and the two side templates is square, and its inner cavity is suitable for the straight square pile (in the shape of a rectangular parallelepiped);

[0004] Most of the existing special-shaped square pile molds are made by welding a liner on the basis of the original straight square pile mold. The liner is adapted to the concave surface of the special-shaped square pile, and the surface of the liner facing the formed pile coincides with the concave surface of the special-shaped square pile.

[0005] In summary, the existing straight square piles and special-shaped square piles must be made using two different molds, which are not universal for different pile types. Polygonal straight piles and polygonal special-shaped piles cannot be prepared using a unified mold.

[0006] Therefore, how to make a square pile forming mold that is universally applicable to polygonal straight piles and polygonal special-shaped piles has become a technical problem that needs to be solved urgently by those skilled in the art. Summary of the invention

[0007] The purpose of the present invention is to provide a polygonal pile forming mold which is universally applicable to polygonal straight piles and polygonal special-shaped piles in order to solve the problem that the existing polygonal pile molds have poor universality.

[0008] To achieve the above object, the present invention adopts the following technical solution:

[0009] A polygonal pile forming mold comprises an open mold body and two or more combined modeling plates; wherein the open mold body is provided with two or more notches spaced longitudinally on at least one side template, and a combined modeling plate is detachably provided at each notch of the side template; and at least part of the combined modeling plate can be adjusted in the lateral position relative to the side template.

[0010] Furthermore, the combined modeling plate of the polygonal pile forming mold includes more than two modeling plates which are hinged in sequence in the longitudinal direction, and in the longitudinal direction, the modeling plates located at both ends of the combined modeling plate are respectively connected to their corresponding notch edges; the open mold body is provided with a positioning stopper on the outside of the mold cavity to fix the combined modeling plate after the position is adjusted.

[0011] Furthermore, in two adjacent shaping plates, a vertically through groove is provided on one longitudinal end face of the shaping plate, and the groove wall of the groove close to the molding cavity presents a first arc surface with the hinge point as the origin, and a vertically continuous protrusion is provided on one longitudinal end face of the other shaping plate, and the protrusion has a second arc surface that matches the first arc surface, and the protrusion can be received in the groove.

[0012] Furthermore, the combined modeling plate also includes an elastic element; in two adjacent modeling plates, one end of the elastic element is connected to one modeling plate, and the other end of the elastic element is connected to the other modeling plate.

[0013] Furthermore, the open mold body is provided with a support member capable of fixing a positioning stop member on the outer side of the molding cavity, and the support member is provided with a position adjustment device for adjusting the horizontal position of the combined molding plate.

[0014] Furthermore, the combined molding plate includes: an intermediate molding plate and transition molding plates located at both ends of the intermediate molding plate, and the longitudinal length L1 of the transition molding plate is 0.05 times to 0.5 times the shortest straight line length L2 from the center axis of the mold cavity to the intermediate molding plate; preferably, the two transition molding plates have the same specifications.

[0015] Furthermore, the position adjustment device includes a reciprocating push-pull mechanism, which is installed on the support and one end of which is connected to the intermediate molding plate; the positioning stop member includes a transverse stop bar installed and fixed on the support and corresponding to the transition molding plate one by one. When the transition molding plate abuts against the transverse stop bar, the molding surface of the side template is flush with the molding surface of the intermediate molding plate, or the molding surface of the side template is convex to the molding surface of the intermediate molding plate.

[0016] Furthermore, the supporting member includes a main supporting plate parallel to the side formwork, the longitudinal ends of the main supporting plate are respectively connected to the side formwork by side plates, and the longitudinal length of the main supporting plate is greater than the longitudinal length of the notch; the reciprocating push-pull mechanism and the transverse baffle rod are detachably mounted on the main supporting plate.

[0017] Furthermore, the present invention also provides a polygonal pile forming mold, wherein the supporting member includes a main supporting plate parallel to the side template, the longitudinal ends of the main supporting plate are respectively connected to the side template by side plates, and the longitudinal length of the main supporting plate is equal to the longitudinal length of the notch; the combined molding plate includes: an intermediate molding plate and transition molding plates located at both ends of the intermediate molding plate, and a reciprocating push-pull mechanism with one end connected to the intermediate molding plate is installed on the main supporting plate.

[0018] Compared with the prior art, the polygonal pile forming mold provided by the present invention increases its variability on the basis of a certain shape of the original open mold body inner cavity by adjusting the relative position of the combined modeling plate with respect to the side mold plate, thereby solving the singleness of use of the existing polygonal pile forming molds, that is, the polygonal pile forming mold can provide a forming cavity for polygonal straight piles and polygonal special-shaped piles, thereby producing at least two types of piles in the same mold, thereby improving the versatility of the mold; in addition, the combined modeling plate can be detachably arranged at the notch, and this arrangement enables a partial replacement of a number of combined modeling plates after damage, thereby extending the overall service life of the polygonal pile forming mold and reducing the cost of maintenance and replacement.

[0019] In addition, the present invention also provides a polygonal pile forming mold combination, including at least two of the above-mentioned polygonal pile molds, wherein the polygonal pile molds are arranged side by side in the transverse direction and share a bottom mold plate; the combined molding plates of two adjacent polygonal pile molds aligned in the transverse direction share the same position adjustment device.

[0020] The polygonal pile forming mold combination provided by the present invention includes the above-mentioned polygonal pile forming mold, so the polygonal pile forming mold combination including the polygonal pile forming mold also has the functions mentioned above in the polygonal pile forming mold; and, on this basis, by setting a combined shaping plate in which two polygonal pile molds are aligned in the transverse direction and share the same position adjustment device, double-sided drive can be achieved, thereby effectively improving the utilization rate of the site area and making the polygonal pile production space layout compact. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a three-dimensional diagram of a polygonal pile forming mold in Example 1 of the present invention;

[0022] Figure 2 The open mold body in embodiment 1 of the present invention;

[0023] Figure 3 yes Figure 1 An enlarged view of the letter K portion;

[0024] Figure 4 is a top view of the combined modeling plate in Example 1 of the present invention;

[0025] Figure 5 yes Figure 4 An enlarged view of the letter M in the middle;

[0026] Figure 6 is a top view of the molding surface of the combined molding plate in Example 1 of the present invention, which is concave in the molding surface of the side mold plate;

[0027] Figure 7 yes Figure 6 An enlarged view of the letter N in the figure;

[0028] Figure 8 is a top view of the molding surface of the combined molding plate in Example 1 of the present invention being coplanar with the molding surface of the side mold plate;

[0029] Fig. 9 yes Figure 8 An enlarged view of the letter O in the figure;

[0030] Fig.10 It is a top view of another combined molding plate in Example 1 of the present invention, in which the molding surface is convex from the molding surface of the side mold plate;

[0031] Fig.11 yes Fig.10 An enlarged view of the letter P in the figure;

[0032] Fig.12 It is a top view of another combined molding plate in Example 1 of the present invention, in which the molding surface is coplanar with the molding surface of the side mold plate;

[0033] Fig.13 yes Fig.12 An enlarged view of the letter Q portion;

[0034] Fig.14 is a three-dimensional diagram of another polygonal pile forming mold in Example 2 of the present invention;

[0035] Fig.15 is a top view of the molding surface of the integral molding plate in Example 2 of the present invention, which is concave in the molding surface of the side mold plate;

[0036] Fig.16 yes Fig.15 Sectional view in the AA direction;

[0037] Fig.17 is a top view of the molding surface of the integral molding plate in Example 2 of the present invention, which is coplanar with the molding surface of the side mold plate;

[0038] Fig.18 It is a front view of the polygonal pile mold assembly in Example 3 of the present invention.

[0039] The list of reference numbers in the figure is:

[0040] 100. Polygonal pile forming mold;

[0041] 1. Combined modeling plate; 11. Transition modeling plate; 110. Protrusion; 111. Second arc surface; 112. First side surface; 12. Intermediate modeling plate; 120. Groove; 121. First arc surface; 13. Cylindrical tension spring; 14. Rotating latch;

[0042] 1a, another combined modeling plate; 113, connecting groove; 114, third arc surface;

[0043] 2. Support member; 21. Side plate; 22. Main support plate;

[0044] 3. Open mold body; 31. Side mold plate; 310. Inner edge; 311. Connecting side;

[0045] 312, side template forming surface; 313, outer edge; 314, connecting protrusion; 315, fourth arc surface; 32, notch; 33, bottom template;

[0046] 4. Transverse stop bar;

[0047] 5. Position adjustment device; 51. Control connecting rod;

[0048] 101. Another polygonal pile forming mold;

[0049] 1b, integral molding plate; 15, sliding surface; 151, slider;

[0050] 2b, parallel support member; 23, guide surface; 231, slide groove;

[0051] 200. Polygonal pile forming die assembly DETAILED DESCRIPTION

[0052] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0053] For convenience, the relevant terms in this embodiment are defined as follows:

[0054] In this article, the length direction of the mold body is defined as the longitudinal direction, the width direction of the mold body is defined as the transverse direction, and the direction perpendicular to the horizontal plane is defined as the up and down direction, wherein the direction close to the ground is defined as the down direction, and the direction away from the ground is defined as the up direction; for any component, the relatively lower end (wall) thereof can be referred to as the lower end (lower wall) or the bottom end (bottom wall), and the two ends (walls) located in the transverse direction can be referred to as the side ends (walls);

[0055] The direction close to the axis of the polygonal pile mold is defined as the inside, and the opposite direction is defined as the outside. This definition shall apply to all components unless otherwise specified.

[0056] Example 1

[0057] like Figure 1 This embodiment provides a polygonal pile forming mold 100, which includes an open mold body 3 and more than two combined molding plates 1. Figure 2 As shown, the open mold body 3 has more than two notches 32 spaced apart longitudinally on at least one side template 31, and the side template 31 is detachably provided with a combined modeling plate 1 at each notch 32; at least part of the combined modeling plate 1 can be adjusted in the transverse direction of the width of the open mold body 3 relative to the side template 31.

[0058] In the use state, the combined modeling plate 1 and the open mold body 3 together form the mold cavity of the polygonal straight pile or polygonal special-shaped pile. The mold solves the problem that the polygonal straight pile mold and the polygonal special-shaped pile mold are not universal for different pile types. In addition, the combined modeling plate can be detachably arranged at the notch. This arrangement allows a number of combined modeling plates to be partially replaced after being damaged, thereby extending the overall service life of the polygonal pile forming mold 100 and reducing the cost of maintenance and replacement.

[0059] like Figure 3As shown, a section of the polygonal pile forming mold including a combined modeling plate 1 is shown. The combined modeling plate 1 includes more than two modeling plates that are hinged in sequence in the longitudinal direction of the side mold plate 31. Specifically, the hinge can be completed by rotating the latch 14. In the longitudinal direction, the modeling plates located at both ends of the combined modeling plate 1 are respectively connected to the edges of the corresponding notches 32. In addition, a positioning stopper is also provided on the outer side of the open mold body 3 in the mold cavity to fix the combined modeling plate 1 after the position is adjusted. Therefore, during the use of the polygonal pile forming mold as a polygonal straight pile mold and a polygonal special-shaped pile mold, the above-mentioned setting enables the combined modeling plate 1 to be connected to the edges of the corresponding notches 32 without gaps, so that the combined modeling plate 1 and the open mold body 3 can provide a complete mold cavity, avoiding leakage of slurry due to the gap in the connecting part, so that the polygonal straight pile and the polygonal special-shaped pile can be made in the same mold under the premise of ensuring quality.

[0060] For further information, please refer to Figure 4 and Figure 5 In two adjacent molding plates, a vertically penetrating groove 120 is provided on one longitudinal end face of the molding plate, and the groove wall of the groove 120 close to the molding cavity presents a first arc surface 121 with the hinge point as the original center, and a vertically continuous protrusion 110 is provided on one longitudinal end face of the other molding plate, and the protrusion 110 has a second arc surface 111 that matches the first arc surface 121. Preferably, the cross-sectional shape of the groove 120 including the first arc surface 121 and the protrusion 110 including the second arc surface 111 is an eagle's beak shape, which is specifically manifested as two arcs that intersect at one point. The eagle's beak-shaped protrusion 110 and the groove 120 ensure that during the hinged rotation of the two adjacent molding plates, the eagle's beak tip of the protrusion 110 can always be against the groove wall of the groove 120 and no interference is generated during the rotation process. In the process of adjusting the state of the combined modeling board 1 from a non-linear state to a linear state, the beak tip of the protrusion 110 slowly rotates along the hinge point between the protrusion 110 and the groove 120 from the first arc surface 121 against the groove 120 until the first arc surface 121 overlaps with the second arc surface 111. At this time, the protrusion 110 is completely accommodated in the groove 120. At this time, the various plate surfaces of the combined modeling board 1 forming the molding cavity are coplanar and have no gap. Under this setting, the slurry leakage problem of the combined modeling board 1 in the polygonal special-shaped pile mold cavity can be effectively improved. In addition, when the beak tip of the protrusion 110 is formed against the first arc surface 121 of the groove 120 and the adjacent modeling board molding surfaces are at a certain angle, the molding surfaces of the adjacent modeling boards are smoothly transitioned. Compared with the original right-angle transition surface, the second arc surface 111 reduces the contact area between the polygonal special-shaped pile and the mold cavity, effectively reducing the demolding resistance.

[0061] Furthermore, if Figure 5The combined modeling plate 1 further comprises an elastic element. In two adjacent modeling plates, one end of the elastic element is connected to one modeling plate, and the other end of the elastic element is connected to the other modeling plate. Specifically, the elastic element can be a cylindrical tension spring 13, which is arranged between adjacent modeling plates with a staggered rotation pin 14. Preferably, one hinge point comprises two cylindrical tension springs 13, and the vertical spacing between them should be greater than half of the height of the mold cavity to improve the stability of the combined modeling plate 1.

[0062] like Figure 6 The open mold body 3 is provided with a support member 2 for fixing a positioning stopper on the outer side of the molding cavity, and the support member 2 is provided with a position adjustment device for adjusting the position of the combined molding plate 1 in the lateral direction. Specifically, the position adjustment device includes a reciprocating push-pull mechanism, the reciprocating push-pull mechanism 5 includes a control link 51 installed on the support member 2 and connected to the intermediate molding plate 12 at one end, and a power element (not shown in the figure) connected to the other end of the control link 51; the positioning stopper includes a transverse stopper 4 installed and fixed on the support member 2 and corresponding to the transition molding plate 11 one by one, when the transition molding plate 11 abuts against the transverse stopper 4, the molding surface of the side mold plate 31 is flush with the molding surface of the intermediate molding plate 12, or the molding surface of the side mold plate 31 is convex to the molding surface of the intermediate molding plate 12; the support member includes a main support plate 22 parallel to the side mold plate 31, and the longitudinal ends of the main support plate 22 are respectively connected to the side mold plate 31 by side plates 21 to ensure the integrity of the molding cavity, and the side plates 21 also provide a running channel for the combined molding plate 1. And the longitudinal length of the main support plate 22 is greater than the longitudinal length of the notch 32, so as to accommodate the combined molding plate 1. The reciprocating push-pull mechanism 5 and the transverse baffle 4 are detachably mounted on the main support plate 22. The detachability makes the reciprocating push-pull mechanism 5 and the transverse baffle 4 replaceable and adjustable, which can better ensure the accuracy of the position of the combined molding plate 1 relative to the side template 31, thereby improving the appearance and quality of the polygonal pile.

[0063] In addition, if Figure 6 In the polygonal pile forming mold, the combined molding plate 1 includes: an intermediate molding plate 12 and transition molding plates 11 located at both ends of the intermediate molding plate 12. The longitudinal length L1 of the transition molding plate 11 is 0.05 to 0.5 times the shortest straight line length L2 from the center axis of the mold cavity to the intermediate molding plate 12. This setting can avoid the cross-sectional size of the thin pile end being too small, effectively control the stress-bearing cross section, and thus improve the tensile and pull-out resistance of the polygonal pile. Preferably, the specifications of the two transition molding plates 11 are the same. The same transition molding plates 11 make the elastic parts uniform and the support parts 2 symmetrical or corresponding, which is convenient for component processing and installation.

[0064] like Figure 6 and Figure 7, shows a state diagram in which the molding surface of the combined molding plate 1 is concave in the molding surface 312 of the side template. In this state, the control link 51 in the reciprocating push-pull mechanism is in a fully ejected state, and the control link 51 in the reciprocating push-pull mechanism is fixedly connected to the middle molding plate 12 to provide support. In addition, in this state, the transition molding plate 11 leaves the transverse blocking rod 4, and the transition molding plate 11 is reset to the initial state under the action of the cylindrical tension spring 13, that is, the transition molding plate 11 and the middle molding plate 12 are at a certain angle, adapted to the concave surface of the polygonal special-shaped pile. The transition molding plate 11 is in contact with the inner edge 310 of the notch 32 of the side template 31 where the combined molding plate 1 is located through the first side surface 112. This setting enables the transition molding plate 11 to be seamlessly connected with the side template 31 at the edge of the notch 32, and can cooperate with the cylindrical tension spring 13 to jointly limit the relative position of each molding plate of the combined molding plate 1 in this state. In addition, the second arc surface 111 of the protrusion 110 of the transition molding plate 11 abuts against the first arc surface 121 of the groove 120 of the intermediate molding plate 12, so that the transition molding plate 11 and the intermediate molding plate 12 are smoothly hinged to avoid leakage.

[0065] like Figure 8 , showing the above Figure 6 The state diagram of the combined molding plate 1 being coplanar with the molding surface 312 of the side mold plate, in which the control link 51 in the reciprocating push-pull mechanism is in a retracted state, and the control link 51 in the reciprocating push-pull mechanism is fixedly connected to the intermediate molding plate 12 to provide support. In addition, the transition molding plate 11 is resisted by the transverse blocking rod 4, which causes the cylindrical tension spring 13 connecting the transition molding plate 11 and the intermediate molding plate 12 to be in a tensioned state. When the end face of the transverse blocking rod 4 is completely in contact with the outer side of the transition molding plate 11, the transition molding plate 11 and the intermediate molding plate 12 are coplanar, and are suitable for the polygonal straight pile.

[0066] like Fig. 9 As shown, the transition molding plate 11 is in contact with the connecting side surface 311 at the notch 32 of the side template 31 where the combined molding plate 1 is located through the first side surface 112. This arrangement enables the transition molding plate 11 to be seamlessly connected with the side template 31 at the edge of the notch 32, and can cooperate with the cylindrical tension spring 13 to jointly limit the relative positions of the various molding plates of the combined molding plate 1 in this state. In addition, the second arc surface 111 of the protrusion 110 of the transition molding plate 11 overlaps with the first arc surface 121 of the groove 120 of the intermediate molding plate 12, so that the transition molding plate 11 and the intermediate molding plate 12 are smoothly connected at the hinge to avoid leakage.

[0067] like Fig.10, another type of combined molding plate 1a is shown. The molding surface of the combined molding plate 1 is convex to the molding surface of the side mold plate 31. In this state, the control link 51 in the reciprocating push-pull mechanism is in a fully retracted state. The control link 51 in the reciprocating push-pull mechanism is fixedly connected to the intermediate molding plate 12 to provide support. In addition, in this state, the transition molding plate 11 abuts against the transverse baffle 4, and the cylindrical tension spring 13 between the transition molding plate 11 and the intermediate molding plate 12 is in a tension state. Under the abutment of the transverse baffle 4, the transition molding plate 11 is in a balanced state, that is, the transition molding plate 11 and the intermediate molding plate 12 are at a certain angle, which is adapted to the convex surface of the polygonal special-shaped pile. Fig.11 As shown, the transition molding plate 11 is in contact with the outer edge 313 of the notch 32 of the side template 31 where the combined molding plate 1 is located through the first side surface 112, and this setting enables the transition molding plate 11 to be seamlessly connected with the side template 31 at the edge of the notch 32. In addition, the first side surface 112 of the transition molding plate 11 is provided with a vertically penetrating connecting groove 113, and the groove wall of the connecting groove 113 close to the molding cavity is a third arc surface 114 with the outer edge 313 of the first side surface 112 as the rotation axis, and the connecting side edge corresponding to the notch 32 is provided with a vertically continuous connecting protrusion 314, and the connecting protrusion 314 has a fourth arc surface 315 that matches the third arc surface 114. The third arc surface 114 of the connecting groove 113 of the transition molding plate 11 is in contact with the fourth arc surface 315 of the connecting protrusion 314 corresponding to the notch 32, so that the transition molding plate 11 and the notch 32 are smoothly transitioned to avoid leakage of slurry.

[0068] like Fig.12 , showing another state of another combined molding plate 1a combined molding plate 1, the molding surface of the combined molding plate 1 is coplanar with the molding surface of the side mold plate 31, in this state, the control link 51 in the reciprocating push-pull mechanism is in a fully ejected state, and the control link 51 is fixedly connected to the intermediate molding plate 12 to provide support. In addition, in this state, the transition molding plate 11 does not contact the transverse blocking rod 4, the cylindrical tension spring 13 between the transition molding plate 11 and the intermediate molding plate 12 is in an initial state without force, and the transition molding plate 11 and the intermediate molding plate 12 are coplanar, suitable for polygonal straight piles.

[0069] like Fig.11 , 12 As shown in Figures 13, the transition molding plate 11 is coplanar with the connecting side surface 311 at the notch 32 of the side template 31 where the combined molding plate 1 is located through the first side surface 112, and is suitable for the polygonal straight pile. In addition, the third arc 114 of the connecting groove 113 of the above-mentioned transition molding plate 11 overlaps with the fourth arc surface 315 of the connecting protrusion 314 at the corresponding notch 32, so that there is no gap at the connection between the transition molding plate 11 and the molding surface of the side template to avoid leakage of slurry.

[0070] Example 2

[0071] In this embodiment, the same parts as those in the first embodiment are given the same figure marks, and the same text descriptions are omitted.

[0072] like Fig.14 The present embodiment provides another polygonal pile forming mold 101, which includes an open mold body 3 and two or more integral molding plates 1b, wherein the open mold body 3 is provided with two or more notches 32 spaced apart along the longitudinal direction on at least one side template 31, and the side template 31 is provided with an integral molding plate 1b corresponding to each notch 32; the integral molding plate 1b can be adjusted relative to the side template 31 in the lateral direction of the width of the open mold body 3.

[0073] When in use, the integral shaping plate 1b and the open mold body 3 together form the mold cavity of a polygonal straight pile or a polygonal special-shaped pile. This mold solves the problem that polygonal straight pile molds and polygonal special-shaped pile molds are not universal for different pile types.

[0074] Further, such as Fig.15 As shown, the open mold body 3 is provided with a parallel support member 2b on the outside of the molding cavity. The parallel support member 2b includes a main support plate 22 parallel to the side mold plate 31. The longitudinal ends of the main support plate 22 are connected to the side mold plate 31 by side plates 21 respectively. The guide surface 23 of the parallel support member 2b is always in contact with the sliding surface 15 of the transition molding plate 11. This arrangement enables the integral molding plate 1b to always slide according to the preset track when sliding in the support member, thereby improving the position reliability of the integral molding plate relative to the side mold plate. The longitudinal length of the main support plate 22 is equal to the longitudinal length of the notch 32, and the guide surfaces 23 of the side plates 21 on both sides of the parallel support member 2b are parallel to each other. The integral molding plate 1b includes: an intermediate molding plate 12 and transition molding plates 11 located at both ends of the intermediate molding plate 12. The main support plate 22 is provided with a compound push-pull mechanism with one end connected to the intermediate molding plate 12.

[0075] Specifically, Fig.15 The figure shows the state where the molding surface of the integral molding plate 1b is concave in the molding surface 312 of the side mold plate. In this state, the control link 51 in the reciprocating push-pull mechanism is in a state of being fully ejected to the inside of the mold cavity, and the control link 51 is fixedly connected to the intermediate molding plate 12 to provide support. In addition, the transition molding plate 11 is seamlessly connected to the inner surface of the side mold plate 31 where the integral molding plate 1b is located through the sliding surface 15. Fig.16As shown, specifically, a slider 151 is provided on the sliding surface 15 of the transition molding plate 11, and correspondingly, a guide surface 23 that is in contact with the sliding surface 15 of the transition molding plate 11 is provided with a slide groove 231, or a slide groove 231 is provided on the sliding surface 15, and a slider 151 is provided on the guide surface 23. The existence of the slide groove 231 of the slider 151 makes the operation more stable, and the relative position accuracy of the integral molding plate 1b relative to the open mold body 3 is higher. Similarly, the above-mentioned slider slide groove combination can be replaced by a slider linear guide rail combination, a roller combination, etc.

[0076] like Fig.17 As shown, the molding surface of the middle molding plate 12 in the integral molding plate 1b is coplanar with the molding surface 312 of the side template. In this state, the control link 51 in the reciprocating push-pull mechanism is in a fully retracted state, that is, the direction of movement is the direction indicated by the arrow in the figure. The control link 51 is fixedly connected to the middle molding plate 12 and provides support. In addition, the sliding surface 15 of the transition molding plate 11 is slidably connected to the guide surface 23 of the parallel support member 2b, so that the integral molding plate 1b slides along the preset track until the molding surface of the middle molding plate 12 is coplanar with the molding surface 312 of the side template. At this time, the mold can be used to make polygonal piles and straight piles.

[0077] Example 3

[0078] In this embodiment, the same parts as those in Embodiment 1 and Embodiment 2 are given the same figure marks, and the same text descriptions are omitted.

[0079] like Fig.18 Based on the implementation of the above-mentioned polygonal pile forming mold, a polygonal pile forming mold assembly 200 can be obtained, which is described as follows.

[0080] The above-mentioned polygonal pile forming molds are arranged side by side in the transverse direction and share a bottom mold plate 33; the modular molding plates 1 aligned in the transverse direction of two adjacent polygonal pile molds 100 share the same position adjustment device. The position adjustment device includes a reciprocating push-pull mechanism 5. Specifically, the reciprocating push-pull mechanism 5 can be a double-acting push plate oil cylinder, including two control connecting rods 51 respectively fixedly connected to the modular molding plates 1 aligned in the transverse direction. Under the axial drive of the control connecting rods 51, at least part of the modular molding plates 1 can adjust the transverse position relative to the side mold plate 31.

[0081] In addition, the combined molding plate 1 in the polygonal pile forming mold 100 can be another combined molding plate 1a mentioned in Example 1 or the integral molding plate 1b mentioned in Example 2. Under the axial drive of the control connecting rod 51, at least part of the plate body of the above molding plate can be adjusted in the lateral direction relative to the side mold plate 31. The specific adjustment process is the same as that described in Examples 1 and 2, so it will not be described again.

[0082] The technical principle of the present invention is described above in combination with specific embodiments, but it should be noted that the above descriptions are only for explaining the principle of the present invention and cannot be interpreted as a specific limitation on the protection scope of the present invention in any way. Based on the explanation here, technicians in this field can think of other specific embodiments or equivalent replacements of the present invention without paying creative work, which will fall within the protection scope of the present invention.

Claims

1. A polygonal pile forming mold, characterized in that: The polygonal pile forming mold comprises an open mold body and two or more combined modeling plates; The open mold body has two or more notches spaced longitudinally on at least one side of the mold plate, and a combined molding plate is detachably provided at each notch of the side mold plate; At least part of the combined molding plate can be adjusted in lateral direction relative to the side template; The combined modeling plate comprises two or more modeling plates which are hinged in sequence in the longitudinal direction, and in the longitudinal direction, the modeling plates at both ends of the combined modeling plate are respectively connected to the edges of the corresponding notches; the open mold body is provided with a positioning stopper on the outer side of the mold cavity to fix the combined modeling plate after the position is adjusted; In two adjacent modeling plates, a vertically through groove is provided on one longitudinal end face of the modeling plate, and the groove wall of the groove close to the molding cavity presents a first arc surface with the hinge point as the origin, and a vertically continuous protrusion is provided on one longitudinal end face of the other modeling plate, and the protrusion has a second arc surface that matches the first arc surface, and the protrusion can be received in the groove.

2. The polygonal pile forming mold according to claim 1, characterized in that: The combined shaping plate further comprises an elastic element; In two adjacent shaping plates, one end of the elastic element is connected to one shaping plate, and the other end of the elastic element is connected to the other shaping plate.

3. The polygonal pile forming mold according to claim 1 or 2, characterized in that: The open mold body is provided with a support member capable of fixing a positioning stop member on the outer side of the molding cavity, and the support member is provided with a position adjustment device for adjusting the horizontal position of the combined molding plate.

4. The polygonal pile forming mold according to claim 3, characterized in that: The combined molding plate includes: an intermediate molding plate and transition molding plates located at both ends of the intermediate molding plate, and the longitudinal length L1 of the transition molding plate is 0.05 to 0.5 times the shortest straight line length L2 from the center axis of the mold cavity to the intermediate molding plate.

5. The polygonal pile forming mold according to claim 4, characterized in that: The specifications of the two transition molding panels are the same.

6. The polygonal pile forming mold according to claim 4, characterized in that: The position adjustment device comprises a reciprocating push-pull mechanism, which is mounted on the support member and has one end connected to the middle molding plate; The positioning stop member includes a transverse stop bar installed and fixed on the support member and corresponding to the transition molding plate one by one. When the transition molding plate abuts against the transverse stop bar, the molding surface of the side template is flush with the molding surface of the middle molding plate, or the molding surface of the side template protrudes from the molding surface of the middle molding plate.

7. The polygonal pile forming mold according to claim 6, characterized in that: The support member comprises a main support plate parallel to the side formwork, the longitudinal ends of the main support plate are respectively connected to the side formwork by side plates, and the longitudinal length of the main support plate is greater than the longitudinal length of the notch; The reciprocating push-pull mechanism and the transverse blocking rod are detachably mounted on the main supporting plate.

8. The polygonal pile forming mold according to claim 3, characterized in that: The support member comprises a main support plate parallel to the side formwork, the longitudinal ends of the main support plate are respectively connected to the side formwork by side plates, and the longitudinal length of the main support plate is equal to the longitudinal length of the notch; The combined molding plate comprises: an intermediate molding plate and transition molding plates located at both ends of the intermediate molding plate. The main support plate is provided with a reciprocating push-pull mechanism with one end connected to the middle molding plate.

9. A polygonal pile forming die assembly, characterized in that: The polygonal pile forming die assembly comprises at least two polygonal pile forming dies as claimed in any one of claims 1 to 8; The polygonal pile forming moulds are arranged side by side in the transverse direction and share a bottom mould plate; the combined moulding plates of two adjacent polygonal pile forming moulds aligned in the transverse direction share the same position adjustment device.

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