Low-strength thin and long pile manufacturing mold

Abstract

The utility model relates to the technical field of underground foundation engineering construction, and particularly discloses a low-strength thin and long pile manufacturing mold which comprises a fixed section and two movable sections symmetrically arranged at the two ends of the fixed section. The middle section comprises a middle bottom die and two middle top dies, the middle bottom die and the two middle top dies define a tubular structure with a through long-strip-shaped opening in the top, one side of each middle top die is hinged to the top side of the middle bottom die, the movable section comprises a horizontally-arranged end bottom die and two end top dies, and the end bottom die and the two end top dies define a tubular structure with a through long-strip-shaped opening in the top. The end support comprises a plurality of vertically-arranged end supporting rods and two horizontally-arranged supporting rails, the two supporting rails are arranged below the end bottom die in parallel, a plurality of idler wheels are arranged at the bottom of the end bottom die, the idler wheels are connected with the supporting rails in a rolling mode, and therefore the problems of prefabricating, pulling away and hoisting of the long and thin permeable pile with the advantages of being large in size and low in strength are solved.

Description

Technical Field

[0001] This utility model relates to the field of underground foundation engineering construction technology, and specifically discloses a mold for making low-strength slender piles. Background Technology

[0002] In underground foundation engineering, permeable channels and diversion channels are often used to solve drainage problems. In the past, piles were mostly formed by on-site stacking of crushed stone piles, which required high standards for pile wall forming, made it difficult to control civilized construction on site, and resulted in low pile strength and stability. Permeable concrete is mostly used for the prefabrication of small-volume components such as ground surfaces or permeable bricks. However, its application to structural permeable piles is a bold attempt. Due to the large volume and low strength of permeable piles, the hoisting method cannot be the use of embedded parts. Only the overall hoisting and support method can be used. The circular cross-section mold cannot be pulled out laterally like the bottom mold of the precast beam mold. It can only be broken along the longitudinal direction and then pulled out. The circular cross-section has a large contact area and high resistance, making it difficult to pull out. Therefore, the requirements for the forming mold are high. Utility Model Content

[0003] The purpose of this invention is to provide a mold for manufacturing low-strength slender piles, in order to solve the technical problems mentioned in the background section.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A mold for manufacturing low-strength slender piles includes a fixed section and two movable sections symmetrically arranged at both ends of the fixed section. The fixed section and the movable sections are fixedly connected by bolts. The fixed section includes a horizontally arranged central bottom mold, two central top molds respectively located on both sides of the top of the central bottom mold, and a central support at the bottom of the central bottom mold. The central bottom mold and the two central top molds together form a tubular structure with a continuous strip-shaped opening at the top. One side of the central top mold is hinged to the top side of the central bottom mold. The movable sections include horizontally arranged end bottom molds and two end top molds respectively located on both sides of the top of the end bottom molds. The end support is located at the bottom of the end mold. The end mold and the two end top molds together form a tubular structure with a long, open strip at the top. The end of the movable section away from the fixed section is provided with an end mold. The end mold is fixed to the end mold and the end top mold by bolt sealing connection. The end support includes multiple vertically arranged end support rods and two horizontally arranged support rails. The two support rails are arranged parallel to each other below the end mold. Multiple rollers are provided at the bottom of the end mold. The rollers are rolled in connection with the support rails. Multiple tie rods are provided between the top sides of the two end top molds and between the top sides of the two middle top molds.

[0006] Furthermore, the central support includes a central bottom frame and multiple central support rods located on both sides of the central bottom frame. Each central support rod includes a fixed rod and a movable rod. The bottom end of the fixed rod is connected and fixed to the central bottom frame, and one end of the movable rod is hinged to the top end of the fixed rod, while the other end is fixed to the outside of the central top mold.

[0007] Furthermore, the end support rods are distributed on both sides of the end bottom mold. The end support rods include a fixed rod 2 and a movable rod 2. One end of the movable rod 2 is hinged to the top of the fixed rod 2, and the other end is fixed to the outside of the end top mold.

[0008] Furthermore, the inner side of the middle bottom mold is a semi-circular arc surface, and the size of the inner arc surface of the middle top mold is less than half the size of the inner arc surface of the middle bottom mold.

[0009] Furthermore, both the first fixed rod and the second fixed rod are provided with locking components, which include a chain fixed to the first fixed rod and a bolt at the end of the chain. The first movable rod and the second movable rod are each provided with corresponding locking holes.

[0010] Furthermore, a placement rack is provided above the central bottom frame, and the central bottom mold is placed on the placement rack.

[0011] Furthermore, the bottom of the end mold and the middle mold are provided with hydraulic push rods, the two ends of which are respectively connected and fixed to the end mold and the middle mold, and the bottom of the end mold is provided with hydraulic push rods.

[0012] Furthermore, the length of the fixed segment is greater than the length of the movable segment.

[0013] Compared with the prior art, this utility model has the following features and beneficial effects:

[0014] This utility model adopts a segmented design, consisting of a fixed section and two movable sections symmetrically located at both ends of the fixed section. The fixed section includes a horizontally positioned central bottom mold and two central top molds located on either side of the top of the central bottom mold. The movable section includes a horizontally positioned end bottom mold and two end top molds located on either side of the top of the end bottom mold. A hydraulic push rod is provided at the bottom of the end bottom mold, and hydraulic push rods are provided at the bottom of both the end and central bottom molds. A support rail is provided at the bottom of the end bottom mold, facilitating the sliding of the end bottom mold on the support rail via the hydraulic push rods. This pushes the end bottom mold away from the fixed section, exposing the hoisting position. Then, the end and central top molds are opened for hoisting operations. This design solves the problems of prefabrication, extraction, and hoisting of slender permeable piles characterized by large volume and low strength. It features safety and applicability, has significant promotional and practical value, and its widespread application will generate substantial economic benefits. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 for Figure 1 Schematic diagram of the AA section structure;

[0017] Figure 3 for Figure 1 Schematic diagram of the cross-sectional structure of the middle BB;

[0018] Figure 4 This is a schematic diagram of the unfolded structure of the end top mold of this utility model.

[0019] Reference numerals: 1. Middle bottom mold; 2. Middle top mold; 3. End bottom mold; 4. End top mold; 5. End mold; 6. Support rail; 7. Roller; 8. Tie rod; 9. Middle support rod; 10. End support rod; 11. Locking component; 12. Locking hole; 13. Hydraulic push rod; 14. Hydraulic ejector rod. Detailed Implementation

[0020] To make the technical means, innovative features, objectives and effects of this utility model easier to understand, the utility model will be further described below.

[0021] The embodiments described herein are specific implementations of this utility model, used to illustrate the concept of this utility model. They are all illustrative and exemplary, and should not be construed as limiting the implementation methods or scope of this utility model. In addition to the embodiments described herein, those skilled in the art can employ other obvious technical solutions based on the content disclosed in the claims and specification of this application. These technical solutions include those that make any obvious substitutions and modifications to the embodiments described herein.

[0022] This utility model discloses a mold for manufacturing low-strength slender piles, such as Figures 1 to 4As shown, the mold is a horizontally arranged, cylindrical structure, including a fixed section and two symmetrically arranged movable sections at both ends of the fixed section. The fixed section and the movable sections are fixed together by bolts. The length of the fixed section is greater than the length of the movable section. The fixed section includes a horizontally arranged central bottom mold 1, two central top molds 2 respectively located on both sides of the top of the central bottom mold 1, and a central support at the bottom of the central bottom mold 1. The central bottom mold 1 and the central top molds 2 are arc-shaped plate structures with the same curvature and the same length. The central bottom mold 1 and the two central top molds 2 together form a tubular structure with a continuous strip-shaped opening at the top. The continuous strip-shaped opening is a slender pile casting port. One side of the central top mold 2 is hinged to the top side of the central bottom mold 1. The inner side of the central bottom mold 1 is a semi-circular arc surface. The size of the inner arc surface of the central top mold 2 is less than half the size of the inner arc surface of the central bottom mold 1. The central support includes a central bottom frame and multiple central supports located on both sides of the central bottom frame. The support rod 9 is arranged in a U-shape in the middle bottom frame. The middle support rod 9 is evenly distributed vertically on both sides of the middle bottom frame. The middle support rod 9 includes a fixed rod 1 and a movable rod 1. The bottom end of the fixed rod 1 is connected and fixed to the middle bottom frame. A pin is provided between the movable rod 1 and the fixed rod 1. A spring is provided on the pin. One end of the movable rod 1 is hinged to the top end of the fixed rod 1 through the pin. The two ends of the spring are fixedly connected to the movable rod 1 and the fixed rod 1 respectively. The end of the movable rod 1 away from the fixed rod 1 is fixed to the outside of the middle top mold 2. The fixed rod 1 is provided with a locking component 11. The locking component 11 includes a chain fixed to the fixed rod 1 and a bolt provided at the end of the chain. The movable rod 1 is provided with a locking hole 12. When the middle top mold 2 is opened to the outside, the bolt is inserted into the locking hole 12 to lock the movable rod 1 and the fixed rod 1 in place and prevent the movable rod 1 from rotating. A placement frame is provided above the middle bottom frame. The middle bottom mold 1 is placed on the placement frame. The bottom of the middle bottom frame is fixed to the foundation ground by expansion bolts.The movable section includes a horizontally positioned end bottom mold 3, two end top molds 4 respectively located on either side of the top of the end bottom mold 3, and an end support at the bottom of the end bottom mold 3. The end bottom mold 3 and the end top molds 4 are arc-shaped plate structures with the same curvature and the same length. The end bottom mold 3 and the two end top molds 4 together form a tubular structure with a continuous strip-shaped opening at the top. An end mold 5 is provided at the end of the movable section away from the fixed section. The end mold 5 is a circular plate, and the end mold 5 is fixed to the end bottom mold 3 and the end top molds 4 by bolts. The open-faced spout is for pouring slender piles. One side of the end top mold 4 is hinged to the top side of the end bottom mold 3. The end bottom mold 3 is identical to the middle bottom mold 1 except for length. The end top mold 4 is identical to the middle top mold 2 except for length. The end support includes multiple vertically arranged end support rods 10 and two horizontally arranged support rails 6. The end support rods 10 have the same structure as the middle support rods 9. The end support rods 10 are distributed on both sides of the end bottom mold 3. Each end support rod 10 includes a fixed rod and a movable rod. The bottom end of the fixed rod is fixed to the foundation ground. A pin is provided between the movable rod 2 and the fixed rod 2, and a spring is provided on the pin. One end of the movable rod 2 is hinged to the top of the fixed rod 2 through the pin. Both ends of the spring are fixedly connected to the movable rod 2 and the fixed rod 2 respectively. The end of the movable rod 2 away from the fixed rod 2 is fixed to the outside of the end mold 4. The fixed rod 2 is provided with a locking component 11, and the movable rod 2 is provided with a corresponding locking hole 12. Two support rails 6 are arranged parallel to each other below the end mold 3. The bottom of the end mold 3 is provided with multiple rollers 7, and the rollers 7 are rolledly connected to the support rails 6. The bottom of the end mold 3 is provided with a hydraulic push rod 14. The mold is supported by limiting supports and hydraulic push rods 14 to lift it to its theoretical height. Hydraulic push rods 13 are installed at the bottom of the end molds 3 and the middle mold 1, respectively. The two ends of the hydraulic push rods 13 are connected and fixed to the end molds 3 and the middle mold 1. The rollers 7 slide left and right on the support rails 6 by pushing and pulling the hydraulic push rods 13. Multiple tie rods 8 are installed between the top sides of the two end molds 4 and the two middle molds 2, thereby fixing the two end molds 4 and the two middle molds 2 relatively together and preventing mold bursting during the casting process.

[0023] During use, first level the foundation ground of the installation site, ensuring that the overall height difference of the site does not exceed 5 mm. After leveling, drill holes in the foundation ground according to the dimensions marked on the drawings. Then, fix the fixing section to the foundation ground with expansion bolts. Clean the inside of the middle bottom mold 1 and the middle top mold 2 and spray with release agent. Hoist the end top mold 4 and the end bracket to the predetermined position at the end of the fixing section. Fix the end bracket to the foundation ground with expansion bolts. Clean the inside of the end top mold 4 and spray with release agent. Unfold the end top mold 4 outwards, then place the rollers 7 of the end bottom mold 3 on the support rail 6. Use the hydraulic push rod 13 to pull the end bottom mold 3 toward the fixing section, and then use the hydraulic jack 14 to lift the end bottom mold 3 to an appropriate height, ensuring that the mounting holes of the end bottom mold 3 are aligned with the mounting holes of the middle bottom mold 1. Then, lock the end bottom mold 3 with the limit support. Replace the hydraulic jack 14 to lower the detachment end. The bottom mold 3 is closed, and the top mold 4 is closed. The two top molds 4 and the two middle molds 2 are fixed together by tie rods 8. The top molds 4 and 2 and the bottom molds 3 and 1 are fastened with bolts. The inside of the bottom mold 3 is cleaned and a release agent is sprayed. The end mold 5 is fixed to the movable end with bolts, and then the casting is carried out. After the slender pile is prefabricated, the end mold 5 is disassembled, the bolts connecting the top mold 4 and the fixed section are removed, the top mold 4 and the middle mold 2 are unfolded, the bolts connecting the bottom mold 3 and the fixed section and the limiting support under the bottom mold 3 are removed, and the hydraulic jack 14 is raised to slightly lower than the bottom mold. The bottom mold 3 is allowed to fall naturally by its own weight and external force. It first falls onto the hydraulic jack 14 and then slowly descends until it is completely lowered onto the support rail 6. Then the hydraulic push rod 13 is used to push the bottom mold 3 away from the fixed section and the prefabricated slender pile is taken out.

[0024] This utility model adopts a segmented design, which includes a fixed section and two movable sections symmetrically located at both ends of the fixed section. The fixed section includes a horizontally arranged central bottom mold and two central top molds located on both sides of the top of the central bottom mold. The movable section includes a horizontally arranged end bottom mold and two end top molds located on both sides of the top of the end bottom mold. A hydraulic push rod is provided at the bottom of the end bottom mold, and hydraulic push rods are provided at the bottom of the end bottom mold and the central bottom mold. A support rail is provided at the bottom of the end bottom mold, which facilitates the sliding of the end bottom mold on the support rail by pushing and pulling it with the hydraulic push rods. This pushes the end bottom mold away from the fixed section, thereby exposing the hoisting position. Then, the end top mold and the central top mold are opened for hoisting operations. This design solves the problems of prefabrication, extraction, and hoisting of slender permeable piles with large volume and low strength.

[0025] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A low-strength elongated pile manufacturing mold, comprising a fixed section and two movable sections symmetrically arranged at both ends of the fixed section, the fixed section and the movable sections being fixed by bolt connection, characterized in that: The fixed section comprises a horizontally arranged middle bottom die (1) and two middle top dies (2) arranged on both sides of the top of the middle bottom die (1), the middle bottom die (1) and the two middle top dies (2) enclose a tubular structure with a long strip-shaped opening at the top, one side of the middle top die (2) is hinged to the top side of the middle bottom die (1), the movable section comprises an end bottom die (3) arranged horizontally, and two end top dies (4) arranged on both sides of the top of the end bottom die (3), the end bottom die (3) and the two end top dies (4) enclose a tubular structure with a long strip-shaped opening at the top, one end of the movable section away from the fixed section is provided with an end die (5), the end die (5) is fixedly connected with the end bottom die (3) and the end top die (4) through bolt sealing, the bottom of the end bottom die (3) is provided with two horizontally arranged support rails (6), the two support rails (6) are arranged in parallel below the end bottom die (3), the bottom of the end bottom die (3) is provided with a plurality of rollers (7), the rollers (7) are rollingly connected with the support rails (6), and a plurality of tension rods (8) are arranged between the top sides of the two end top dies (4) and between the top sides of the two middle top dies (2).

2. A low strength slender pile production mould according to claim 1, characterised in that: The middle bottom die (1) is provided below with a middle support, the middle support comprises a middle bottom frame and a plurality of middle support rods (9) arranged on both sides of the middle bottom frame, the middle support rod (9) comprises a fixed rod one and a movable rod one, the bottom end of the fixed rod one is connected with the middle bottom frame, one end of the movable rod one is hinged to the top end of the fixed rod one, and the other end is fixed to the outer side of the middle top die (2).

3. A low strength slender pile production mould according to claim 2, characterised in that: The bottom of the end bottom die (3) is provided with an end support, the end support comprises a plurality of vertically arranged end support rods (10), the end support rods (10) are dispersedly arranged on both sides of the end bottom die (3), and the end support rod (10) comprises a fixed rod two and a movable rod two, one end of the movable rod two is hinged to the top end of the fixed rod two, and the other end is fixed to the outer side of the end top die (4).

4. A low strength slender pile production mould according to claim 1, characterized in that: The inner side of the middle bottom die (1) is a semicircular arc surface, and the specification of the inner side arc surface of the middle top die (2) is less than half of the specification of the inner side arc surface of the middle bottom die (1).

5. A low strength slender pile production mould according to claim 3, characterised in that: The fixed rod one and the fixed rod two are both provided with a clamping part (11), the clamping part (11) comprises a chain fixed on the fixed rod one and a clamping bolt arranged at the end of the chain, and the movable rod one and the movable rod two are both provided with a clamping hole (12) in correspondence.

6. A low strength slender pile production mould according to claim 1, characterized in that: The bottom of the end bottom die (3) and the middle bottom die (1) is provided with a hydraulic push rod (13), the two ends of the hydraulic push rod (13) are connected with the end bottom die (3) and the middle bottom die (1) respectively, and the bottom of the end bottom die (3) is provided with a hydraulic push rod (14).

7. A mold for making low-strength slender piles according to any one of claims 1 to 6, characterized in that: The length of the fixed section is greater than the length of the movable section.

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