Spliced pile casing for rotary excavating pile in high backfill soil area

Abstract

The utility model discloses a spliced pile casing for a rotary excavating pile in a high backfill soil area. The spliced pile casing comprises an upper pile casing section, a connecting section and a lower pile casing section, wherein the upper pile casing section and the lower pile casing section each comprise a pile casing section body, a connecting base, an outer baffle and an inner clamping ring, the outer baffles and the inner clamping rings are arranged at the same ends of the pile casing section bodies, the outer baffles are arranged in the circumferential direction of the pile casing section bodies at intervals, the inner clamping rings are arranged on the inner sides of the outer baffles, and the connecting bases are arranged between the outer baffles; the connecting section comprises a connecting section body, connecting fasteners and clamping grooves, the connecting fasteners are arranged at the two ends of the connecting section body at intervals in the circumferential direction, the clamping grooves are formed in the annular wall faces of the two ends of the connecting section body, the connecting fasteners can be clamped into the connecting base, and the inner clamping rings can be inserted into the clamping grooves. When a long pile casing needs to be used in a high backfill soil area, the pile casing can be spliced, transportation is convenient, the construction cost is reduced, and the construction efficiency is improved.

Description

Technical Field

[0001] The utility model relates to a spliced ​​casing for rotary excavation piles in high backfill areas, belonging to the technical field of hole pile support. Background Art

[0002] During the construction of building foundations, when there are high and low cross-regions in the project foundation construction, steel casings are usually required for pile construction in high backfill areas to prevent the collapse of the hole from affecting the safety and quality of construction. However, existing steel casings are usually long and heavy, making them difficult to transport and install. In the case of high backfill height differences, long casings are even more necessary, which invisibly increases the construction difficulty and construction cost during the construction process. Utility Model Content

[0003] Based on the above, the utility model provides a spliced ​​casing for rotary piles in high backfill areas, which solves the problems existing in the current long steel casing construction through a multi-section splicing structure.

[0004] The technical solution of the utility model is: a spliced ​​casing for rotary piles in high backfill areas, comprising an upper casing section, a connecting section and a lower casing section; wherein,

[0005] The upper casing section and the lower casing section each include a casing section body, a connecting base, an outer baffle plate and an inner snap ring, wherein the outer baffle plate and the inner snap ring are arranged at the same end of the casing section body, the outer baffle plates are arranged at intervals on the circumference of the casing section body, the inner snap ring is arranged on the inner side of the outer baffle plates, and the connecting base is arranged between the outer baffle plates;

[0006] The connecting section includes a connecting section body, a connecting fastener and a slot. The connecting fasteners are arranged at both ends of the connecting section body at intervals along the circumferential direction. The slots are formed on the annular wall surfaces at both ends of the connecting section body. The connecting fastener can be snapped into the connecting base, and the inner snap ring can be inserted into the slot.

[0007] In one example, the connecting base includes a base body, a fixing groove and a fastening bolt, the base body is arranged on the casing segment body, the fixing groove is opened on the base body, and the fastening bolt is transversely passed through the base body;

[0008] The connecting fastener includes a connecting fastener base, a connecting lock, a hinge and a bolt hole. The connecting fastener base is arranged on the connecting section body, the connecting lock is connected to the connecting fastener base through a hinge, the bolt hole is opened at the free end of the connecting lock, the connecting lock can be inserted into the fixing groove, and the fastening bolt can be inserted into the bolt hole to fix the connecting lock in the fixing groove.

[0009] In one example, the connection base is disposed on the outer surface of the inner clamp ring and is located near the end of the casing segment body.

[0010] In one example, the height of the connecting section body is set so that when the inner clamping rings of the upper and lower casing sections are respectively inserted into the clamping grooves at both ends and locked, the outer baffles of the upper and lower casing sections can be aligned and abut against each other.

[0011] The beneficial effects of the utility model are as follows: by setting the casing into a multi-section structure and connecting it through the connecting section, when encountering a high backfill area and needing to use a long casing, the casing can be spliced, which is convenient for transportation, reduces construction costs, and improves construction efficiency. The casing section is designed by the connecting section body, the connecting base, the outer baffle plate and the inner clamp ring, and the connecting section is designed by the connecting section body, the connecting fastener and the clamping groove. The inner clamp ring can cooperate with the clamping groove to achieve rapid positioning, and the connecting fastener can cooperate with the connecting base to achieve rapid fixation. The outer baffle plates of the two casing sections can be aligned and closed to ensure the safety and reliability of the casing. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 A schematic diagram of splicing casing;

[0013] Figure 2 It is an exploded schematic diagram of the spliced ​​casing at the connection;

[0014] Figure 3 is a schematic diagram of connecting fasteners and connecting bases;

[0015] Figure 4 This is a schematic diagram of casing splicing;

[0016] Description of reference numerals:

[0017] 1 connecting section, 11 connecting section body, 12 connecting fastener, 121 connecting fastener base, 122 connecting lock, 123 hinge, 124 bolt hole, 13 card slot;

[0018] 2 upper casing section, 21 casing section body, 22 connecting base, 221 base body, 222 fixing groove, 223 fastening bolt, 23 outer baffle, 24 inner clamping ring;

[0019] 3. Lower casing section. DETAILED DESCRIPTION

[0020] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation of the utility model is described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific implementation disclosed below.

[0021] See also Figures 1 to 4 In this embodiment, a spliced ​​casing for rotary piles in high backfill areas includes an upper casing section 2, a connecting section 1 and a lower casing section 3. The upper casing section 2 and the lower casing section 3 have the same structure, both including a casing section body 21, a connecting base 22, an outer baffle 23 and an inner snap ring 24. The casing section body 21 is in the shape of a cylindrical barrel. The outer baffle 23 and the inner snap ring 24 are both connected to the same end of the casing section body 21. The outer baffle 23 is evenly spaced and arranged in the circumferential direction of the casing section body 21. The inner snap ring 24 is arranged on the inner side of the outer baffle 23 and is at a certain distance from the outer baffle 23. The connecting base 22 is installed on the outer wall surface of the inner snap ring 24 between the outer baffles 23. The connecting section 1 includes a connecting section body 11, a connecting fastener 12 and a card slot 13. The connecting fasteners 12 are installed at both ends of the connecting section body 11 at intervals along the circumferential direction and correspond one to one with the connecting base 22. The card slot 13 is formed on the annular wall surfaces at both ends of the connecting section body 11. The connecting fastener 12 can be snapped into the connecting base 22, and the inner snap ring 24 can be inserted into the card slot 13, thereby realizing the sequential connection and fixation between the upper casing section 2, the connecting section 1 and the lower casing section 3.

[0022] Furthermore, the connecting base 22 includes a base body 221, a fixing groove 222 and a fastening bolt 223. The base body 221 is fixed on the casing section body 21, the fixing groove 222 is opened on the base body 221, and the fastening bolt 223 is transversely penetrated on the base body 221 and passes through the fixing groove 222. The connecting fastener 12 includes a connecting fastener base 121, a connecting lock 122, a hinge 123 and a bolt hole 124. The connecting fastener base 121 is fixed on the connecting section body 11. The connecting lock 122 is connected to the connecting fastener base 121 through the hinge 123. The bolt hole 124 is opened at the free end of the connecting lock 122. The free end of the connecting lock 122 is in the shape of a boss. The connecting lock 122 can be inserted into the fixing groove 222, so that the fastening bolt 223 can be inserted into the bolt hole 124 to fix the connecting lock 122 in the fixing groove 222, thereby realizing circumferential locking between the connecting section 1 and the upper casing section 2 and the lower casing section 3.

[0023] Furthermore, the connection base 22 is arranged on the outer surface of the inner snap ring 24 and is located at the end close to the casing section body 21. This structure can ensure that the connection section body 11 has a certain length and ensure the reliability of plug-in. The height of the connection section body 11 is set so that when the inner snap rings 24 of the upper casing section 2 and the lower casing section 3 are respectively inserted into the slots 13 at both ends thereof and locked, the outer baffles 23 of the upper casing section 2 and the lower casing section 3 can just be aligned and abut against each other.

[0024] The splicing method of the spliced ​​casing for rotary excavated piles in the high backfill area is as follows:

[0025] The splicing of casing mainly involves connecting the casing section with the connecting section 1 (the upper casing section 2 is connected in the same way as the lower casing section 3). First, the casing section is docked with the connecting section 1, and the connecting fastener 12 is aligned with the connecting base 22 for placement. During the connection process, the inner snap ring 24 of the casing section is inserted into the card slot 13 of the connecting section 1. The card slot 13 is used for the casing connection positioning and to prevent displacement. Then, the connecting lock 122 on the connecting fastener 12 is adjusted. The connecting lock 122 is adjusted in an arc fan-shaped motion through the hinge 123, so that the connecting lock 122 is buckled into the fixing groove 222 of the connecting base 22. The fastening bolt 223 passes through the bolt hole 124 in the connecting lock 122, and then the fastening bolt 223 on the connecting base 22 is fastened. The remaining operations of the connecting lock 122 are the same as the above steps. At this time, the casing section is connected to the connecting section 1. The above steps are repeated to connect the connecting section 1 to another casing section, and the entire casing splicing process is completed.

[0026] The above-mentioned embodiments only express several implementation methods of the utility model, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the utility model, and these all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A spliced ​​casing for rotary piles in high backfill areas, characterized in that: It comprises an upper casing section (2), a connecting section (1) and a lower casing section (3); wherein: The upper casing section (2) and the lower casing section (3) each comprise a casing section body (21), a connecting base (22), an outer baffle plate (23) and an inner snap ring (24); the outer baffle plate (23) and the inner snap ring (24) are arranged at the same end of the casing section body (21); the outer baffle plates (23) are arranged at intervals in the circumferential direction of the casing section body (21); the inner snap ring (24) is arranged on the inner side of the outer baffle plates (23); and the connecting base (22) is arranged between the outer baffle plates (23); The connecting section (1) comprises a connecting section body (11), a connecting fastener (12) and a clamping groove (13); the connecting fastener (12) is arranged at intervals at both ends of the connecting section body (11) along the circumferential direction; the clamping groove (13) is formed on annular wall surfaces at both ends of the connecting section body (11); the connecting fastener (12) can be clamped onto the connecting base (22); and the inner clamping ring (24) can be inserted into the clamping groove (13).

2. The spliced ​​casing for rotary piles in high backfill areas according to claim 1 is characterized in that: The connecting base (22) comprises a base body (221), a fixing groove (222) and a fastening bolt (223); the base body (221) is arranged on the casing segment body (21); the fixing groove (222) is formed on the base body (221); and the fastening bolt (223) is transversely passed through the base body (221); The connecting fastener (12) comprises a connecting fastener base (121), a connecting lock (122), a hinge (123) and a bolt hole (124); the connecting fastener base (121) is arranged on the connecting section body (11); the connecting lock (122) is connected to the connecting fastener base (121) via the hinge (123); the bolt hole (124) is opened at the free end of the connecting lock (122); the connecting lock (122) can be inserted into the fixing groove (222); and the fastening bolt (223) can be inserted into the bolt hole (124) to fix the connecting lock (122) in the fixing groove (222).

3. The spliced ​​casing for rotary piles in high backfill areas according to claim 1 is characterized in that: The connection base (22) is arranged on the outer surface of the inner clamping ring (24) and is located at the end close to the casing segment body (21).

4. The spliced ​​casing for rotary piles in high backfill areas according to claim 1 is characterized in that: The height of the connecting section body (11) is set so that when the inner snap rings (24) of the upper casing section (2) and the lower casing section (3) are respectively snapped into the snap grooves (13) at both ends thereof and locked, the outer baffles (23) of the upper casing section (2) and the lower casing section (3) can be aligned and abutted against each other.

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