Precast pile tip mold

Abstract

The utility model provides a precast pile tip mould which comprises an inner mould plate, a mould framework and a connecting plate, the inner mould plate is arranged on the mould framework in a split mode, and the connecting plate is installed above the inner mould plate. One end of each reserved main reinforcement channel penetrates through the connecting plate and then makes contact with the inner formwork or penetrates through the inner formwork. According to the prefabricated pile tip mold, the reserved main reinforcement channel of the circular steel pipe is arranged, and the lower end of the reserved main reinforcement channel adopts the bevel design, so that the reserved main reinforcement channel is attached to the inner wall of the inner mold plate, no opening is formed in the inner mold plate, and the prefabricated pile tip mold is better in integrity and higher in strength.

Description

Technical Field

[0001] The utility model relates to the field of precast pile molds, in particular to a precast pile tip mold. Background Art

[0002] During the construction process, precast piles are widely used. However, in some cases where the soil base is relatively hard and there are hard sand and gravel layers, making it difficult for pipe piles to penetrate the soil layer, a pile tip is set at the pile head to enhance the penetration ability of the pile into the soil layer. The pile tips of existing pipe piles and hollow square piles are pre-formed separately.

[0003] In the pile tip forming mold of the prior art, since holes need to be opened on the mold to reserve positions for steel bars, it is difficult to process the holes on the mold. Moreover, the inner template of the pile tip forming mold in the prior art is formed by surrounding the shape of the pile tip with steel plates and connected to the supporting legs. The weight of the mold is relatively large and the cost is relatively high. Summary of the Utility Model

[0004] Aiming at the deficiencies existing in the prior art, the utility model provides a precast pile tip mold, which includes an inner template, a mold skeleton and a connecting plate. The inner template is supported on the mold skeleton, and the connecting plate is installed on the inner template through a clamping device; one end of several reserved main reinforcement channels passes through the connecting plate and then contacts the inner template or passes through the inner template. The inner template made of polyurethane board material has low economic cost and is easy to demold. At the same time, the polyurethane board has high wear resistance, and during the construction process, it can reduce the damage to the inner template caused by the friction of the reserved main reinforcement channels.

[0005] The utility model realizes the above technical purpose through the following technical means.

[0006] A precast pile tip mold includes an inner template, a mold skeleton and a connecting plate. The inner template is separately arranged on the mold skeleton, and the connecting plate is installed above the inner template; one end of several reserved main reinforcement channels passes through the connecting plate and then contacts the inner template or passes through the inner template.

[0007] Further, the material of the inner template is a wear-resistant plastic plate.

[0008] Further, the lower edge of the inner template is provided with an opening or directly closed.

[0009] Further, several fixing cylinders are arranged on the connecting plate, and one end of the reserved main reinforcement channel passes through the fixing cylinder and enters the inner template; a fine adjustment device is arranged on the fixing cylinder for adjusting the position of the reserved main reinforcement channel in the fixing cylinder.

[0010] Further, the fine adjustment device includes a spiral feed member, and the spiral feed member passes through the fixing cylinder and contacts the reserved main reinforcement channel. By adjusting the feed distance of the spiral feed member, the position of the reserved main reinforcement channel in the fixing cylinder can be changed.

[0011] Furthermore, one end of the reserved main reinforcement channel in contact with the inner mold has an inclined cutting edge, and the angle of the inclined cutting edge is the same as the taper angle of the inner wall of the inner mold.

[0012] Furthermore, the reserved main reinforcement channel is of a circular tube structure, and a positioning protrusion is provided at the position on the inner mold that is tangent to the reserved main reinforcement channel.

[0013] Furthermore, through holes corresponding to the reserved main reinforcement channel are provided on the wall surface of the inner mold, and one end of the reserved main reinforcement channel passes through the connecting plate and then passes through the through hole and is connected to the mold skeleton.

[0014] Furthermore, the mold skeleton includes an annular support rib, a longitudinal support rib, and a mold bracket. The annular support rib is horizontally arranged around the inner mold, the longitudinal support rib is longitudinally arranged along the inner mold, and a through groove for the annular support rib to pass through is provided on the longitudinal support rib; the mold bracket is connected to the longitudinal support rib and is used to support the inner mold.

[0015] Furthermore, the connecting plate and the mold skeleton are connected by a clamping device. Ear plates are provided on the inner mold, and the inner mold is arranged between the connecting plate and the mold skeleton.

[0016] Furthermore, the inner mold is a polyurethane board.

[0017] The beneficial effects of the present utility model are as follows:

[0018] 1. For the precast pile tip mold of the present utility model, a polyurethane board is used as the inner mold of the forming cavity, which has a low economic cost and is easy to demold. More importantly, the polyurethane board has high wear resistance, which can reduce the damage to the inner mold caused by the reserved main reinforcement channel during the construction process.

[0019] 2. For the precast pile tip mold of the present utility model, by providing a reserved main reinforcement channel in the shape of a circular steel pipe and adopting an inclined opening design at the lower end of the reserved main reinforcement channel, the reserved main reinforcement channel is in fit with the inner wall of the inner mold, and no opening is required on the inner mold, so that the integrity of the precast pile tip mold is better and the strength is higher.

[0020] 3. For the precast pile tip mold of the present utility model, by providing through holes corresponding to the reserved main reinforcement channel on the wall surface of the inner mold and the reserved main reinforcement channel passing through the through holes, it can effectively prevent the slurry from entering the reserved main reinforcement channel through the through holes during the pouring process, resulting in the blockage of the reserved main reinforcement channel. Description of the Drawings

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. The drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, it is obvious that other drawings can also be obtained based on these drawings.

[0022] Figure 1 Schematic structural diagram of the precast pile tip mold described in the present invention;

[0023] Figure 2 Schematic internal structure diagram of the precast pile tip mold described in the present invention;

[0024] In the figure

[0025] 1 - Inner template; 11 - Protrusion, 12 - Ear plate, 2 - Connecting plate; 3 - Mold skeleton; 4 - Fixed cylinder; 5 - Reserved main reinforcement channel; 6 - Annular support rib; 7 - Longitudinal support rib; 6 - Clamping device. Detailed implementation manners

[0026] The following will describe in detail the embodiments of the present invention. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present invention, and should not be construed as a limitation to the present invention.

[0027] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "axial", "radial", "vertical", "horizontal", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality" means two or more unless otherwise specifically defined.

[0028] In the present utility model, unless otherwise clearly specified and defined, terms such as "installation", "connection", "linkage", "fixation", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediate medium, and it may be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0029] As Figure 1 shown, the precast pile tip mold of the present utility model includes an inner template 1 and a mold skeleton. A forming cavity is provided inside the inner template 1. The forming cavity can be a conical cavity. The lower end of the inner template can be directly closed to form a conical pile tip. A notch can also be provided at the lower end of the inner template 1 for placing a conical pile head. The notch can be a circular notch. Alternatively, a pyramid-shaped forming cavity can be provided inside the inner template 1, and a pyramid-shaped pile head is placed in the pyramid cavity. The pile head is mounted on the conical cavity using the conical surface. The wall surface of the inner template 1 is supported by a mold support 3.

[0030] A number of mold skeletons are provided outside the inner template 1 for supporting the inner template 1. The inner template can be detachably placed on the mold skeleton. The inner template 1 is a polyurethane board, which has a low manufacturing cost and is easy to demold. The precast pile tip mold is also provided with a connecting plate 2. The connecting plate 2 is mounted on the inner template 1. Ear plates 12 are provided on the inner template 1, and the ear plates 12 are arranged between the connecting plate 2 and the mold skeleton. A clamping device is provided between the connecting plate 2 and the inner template 1. The clamping device enables the connecting plate 2 to be detachably connected to the mold skeleton. The clamping device 6 includes an upper clamping plate, a lower clamping plate, and a feed bolt. The upper clamping plate is fixedly connected to the connecting plate 2, and the lower connecting plate is connected to the mold skeleton. Grooves are provided on the upper clamping plate and the lower clamping plate for the feed bolt to pass through. A nut is provided at one end of the feed bolt. The feed amount of the feed bolt is adjusted to change the clamping force between adjacent clamping plates. The inner template 1 is fixed by the action of the generated clamping force to prevent the inner template 1 from shaking due to loose assembly during the pouring process. A number of fixing cylinders 4 are provided on the connecting plate 2. The number of fixing cylinders 4 is distributed circumferentially along the connecting plate 2. The fixing cylinders 4 are perpendicular to the plate surface of the connecting plate 2 upward. The reserved main reinforcement channel 5 passes through the fixing cylinders 4 and the connecting plate 2 and then contacts the inner template 1 or passes through the inner template 1. The reserved main reinforcement channel 5 is a circular steel pipe. As Figure 2As shown, one end of the reserved main reinforcement channel 5 passing through the inner formwork 1 is provided with an inclined cutting edge, and the angle of the inclined cutting edge is the same as the taper angle of the inner wall of the inner formwork 1. The lower end of the reserved main reinforcement channel 5 abuts against the wall surface of the inner formwork 1. A fine-tuning device is provided on the fixed cylinder 4, and the fine-tuning device is used to adjust the position of the reserved main reinforcement channel 5 in the fixed cylinder 4. The fine-tuning device includes a spiral feed member. There is a hole on one side of the fixed cylinder 4, and a nut is provided on the outer wall of the fixed cylinder 4 corresponding to the hole. The spiral feed member passes through the nut and the fixed cylinder 4 and contacts the reserved main reinforcement channel 5. By adjusting the feed distance of the spiral feed member, the position of the reserved main reinforcement channel 5 in the fixed cylinder 4 can be changed, and the firmness of the contact between the lower end of the reserved main reinforcement channel 5 and the inner formwork 1 can also be changed. It is also possible to directly thread-connect the fixed cylinder and the reserved main reinforcement channel.

[0031] Embodiment 1:

[0032] The precast pile tip mold described in this embodiment includes an inner formwork 1, a mold skeleton, and a connecting plate 2. The inner formwork 1 is supported on the mold skeleton. The inner formwork 1 is a wear-resistant plastic plate. In this embodiment, the inner formwork 1 is a polyurethane plate. The mold skeleton includes a circular support rib, a longitudinal support rib, and a mold bracket. The mold bracket is supported on the ground, leaving a certain gap between the lower end of the inner formwork and the ground. The connecting plate 2 is installed on the inner formwork 1 through a clamping device. The inner formwork is provided with an ear plate 12. The clamping device 6 includes an upper clamping plate, a lower clamping plate, and a feed bolt. The upper clamping plate and the lower clamping plate are provided with grooves through which the feed bolt can pass. One end of the feed bolt is provided with a nut. By adjusting the feed amount of the feed bolt, the clamping force of the clamping device can be adjusted. Through the clamping device, the inner formwork 1 located within the mold skeleton will not shake randomly, ensuring construction safety. At the same time, the clamping device enables the connecting plate 2 to be detachably connected to the mold skeleton 3, which is convenient for disassembly and assembly. A number of fixed cylinders 4 are provided on the connecting plate 2. One end of a number of reserved main reinforcement channels 5 passes through the fixed cylinders 4 and the connecting plate 2 and then contacts the inner formwork 1. One end of the reserved main reinforcement channel 5 is provided with an inclined cutting edge, and the angle of the inclined cutting plate is the same as the taper angle of the inner wall of the inner formwork 1. The inclined cutting edge of the reserved main reinforcement channel 5 is in close contact with the inner wall of the inner formwork 1. A fine-tuning device is also provided on each fixed cylinder 4. The fine-tuning device includes a spiral feed member. There is a hole on one side of the fixed cylinder 4, and a nut is provided on the outer wall of the fixed cylinder 4 corresponding to the hole. The spiral feed member passes through the nut and the fixed cylinder 4 and contacts the reserved main reinforcement channel 5. By adjusting the feed distance of the spiral feed member, the position of the reserved main reinforcement channel 5 in the fixed cylinder 4 can be changed, and the firmness of the contact between the lower end of the reserved main reinforcement channel 5 and the inner formwork 1 can also be changed. When the reserved main reinforcement channel 5 is a circular steel pipe, a protrusion 11 is provided at the corresponding position of the inner formwork 1. On the one hand, it can position the reserved main reinforcement channel 5, and on the other hand, it can prevent concrete from entering the reserved main reinforcement channel.

[0033] Example 2:

[0034] On the basis of Example 1, in the precast pile tip mold described in Example 2, through holes corresponding to the reserved main reinforcement channels 5 are provided on the wall surface of the inner mold 1. One end of the reserved main reinforcement channel 5 passes through the connecting plate 2 through the fixed cylinder 4 and then penetrates into the through holes, which can effectively prevent the slurry from entering the forming cavity of the inner mold 1 during the pouring process. At the same time, using a polyurethane plate with high wear resistance as the inner mold 1 can minimize the damage to the inner mold 1 caused by the frictional force when the reserved main reinforcement channel 5 passes through the inner mold 1.

[0035] On the basis of Example 2, through holes corresponding to the reserved main reinforcement channels 5 are provided on the wall surface of the inner mold 1. One end of the reserved main reinforcement channel 5 passes through the connecting plate 2 and then penetrates into the through holes and is connected to the mold skeleton.

[0036] It should be understood that although this specification is described according to each embodiment, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0037] The series of detailed descriptions listed above are only specific descriptions of the feasible embodiments of the present invention, and they are not intended to limit the protection scope of the present invention. Any equivalent embodiments or changes made without departing from the technical spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A prefabricated pile tip mold, characterized in that: The mold comprises an inner mold (1), a mold frame (3) and a connecting plate (2), wherein the inner mold (1) is separately arranged on the mold frame (3), and the connecting plate (2) is installed above the inner mold (1); one end of a plurality of reserved main reinforcement channels (5) passes through the connecting plate (2) and then contacts the inner mold (1) or passes through the inner mold (1).

2. The prefabricated pile tip mold according to claim 1, characterized in that: The material of the inner template (1) is a wear-resistant plastic plate.

3. The prefabricated pile tip mold according to claim 1, characterized in that: The lower edge of the inner template (1) is provided with an opening or is directly closed.

4. The prefabricated pile tip mold according to claim 1, characterized in that: A plurality of fixing tubes (4) are provided on the connecting plate (2), and one end of the reserved main reinforcement channel (5) passes through the fixing tube (4) and enters the inner template (1); a fine adjustment device is provided on the fixing tube (4) for adjusting the position of the reserved main reinforcement channel (5) in the fixing tube (4).

5. The prefabricated pile tip mould according to claim 4, characterized in that: The fine-tuning device comprises a spiral feed member, which passes through the fixed tube (4) and contacts the reserved main rib channel (5), and is used to change the position of the reserved main rib channel (5) in the fixed tube (4) by adjusting the feeding distance of the spiral feed member.

6. The prefabricated pile tip mold according to claim 1, characterized in that: One end of the reserved main reinforcement channel (5) in contact with the inner template (1) is provided with an inclined cutting edge, and the angle of the inclined cutting edge is the same as the cone angle of the inner wall of the inner template (1).

7. The prefabricated pile tip mould according to claim 6, characterized in that: The reserved main reinforcement channel (5) is a circular tube structure, and a protrusion (11) is provided on the inner template at a position tangent to the reserved main reinforcement channel.

8. The prefabricated pile tip mold according to claim 1, characterized in that: The wall surface of the inner template (1) is provided with a through hole corresponding to the reserved main reinforcement channel (5); one end of the reserved main reinforcement channel (5) passes through the connecting plate (2) and then enters the through hole to be connected to the mold frame.

9. The prefabricated pile tip mold according to claim 1, characterized in that: The connecting plate (2) and the mold frame (3) are connected via a clamping device (6); an ear plate (12) is provided on the inner mold plate (1); and the ear plate of the inner mold plate (1) is pressed between the connecting plate (2) and the mold frame (3).

10. The prefabricated pile tip mould according to claim 1, characterized in that: The inner template (1) is a polyurethane board.

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