Pile foundation positioning frame

Abstract

The utility model discloses a pile foundation positioning frame, which relates to the technical field of pile foundation construction and comprises a fixing ring, three groups of elastic pieces are arranged on the inner side surface of the fixing ring, one ends of the three groups of elastic pieces pointing to the axis of the fixing ring are all connected with positioning blocks, and elastic anti-skidding linings are arranged on the inner side surfaces of the positioning blocks. Three positioning assemblies are arranged on the upper end face of the fixing ring, each positioning assembly comprises a stand column and a cross beam, the cross beams point to the axis of the fixing ring, the stand columns are sleeved with first sliding sleeves, the first sliding sleeves are fixedly connected with second sliding sleeves, and the cross beams penetrate through the second sliding sleeves. A hoisting block is arranged at one end, pointing to the axis of the fixing ring, of the cross beam; according to the utility model, the elastic piece is self-adaptively telescopic according to the outer diameter of the steel casing, the positioning is convenient, the horizontal and height positions of the hoisting block are accurately adjusted through the scales, the reinforcement cage is hoisted through the hoisting block, and the reinforcement cage is arranged at the central position of the steel casing, so that the eccentric phenomenon of a pile foundation after pile forming is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of pile foundation construction, in particular to a pile foundation positioning frame. Background Art

[0002] A deep foundation consisting of a pile and a pile cap connected to the top of the pile, or a single pile foundation connected by a column and a pile foundation, is referred to as a pile foundation. If the pile body is completely buried in the soil and the bottom surface of the cap is in contact with the soil, it is called a low cap pile foundation; if the upper part of the pile body is exposed to the ground and the bottom of the cap is above the ground, it is called a high cap pile foundation. After the steel casing of the pile foundation is buried, the steel cage needs to be placed in the steel casing. The installation of the steel cage is an important step in the construction of cast-in-place piles. If the center point of the pile foundation steel cage installation is too offset, the pile foundation will be eccentrically compressed and the ability of the pile foundation to bear load will be reduced. There are quality risks. The positioning accuracy of the pile foundation steel cage directly affects the quality of the pile.

[0003] The existing method of positioning the pile foundation steel cage is to use a crane to hang the steel cage in mid-air, and then cooperate with ground workers to place the steel cage into a pre-buried casing. In this way, the center positioning accuracy of the pile foundation steel cage is low. Utility Model Content

[0004] The purpose of the utility model is to provide a pile foundation positioning frame to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a pile foundation positioning frame, comprising a fixing ring, three groups of elastic parts are arranged on the inner side surface of the fixing ring, the ends of the three groups of elastic parts pointing to the axis of the fixing ring are connected to positioning blocks, the inner side surface of the positioning block is provided with an elastic anti-slip lining, and the upper end surface of the fixing ring is provided with three groups of positioning components, the positioning components include a column and a beam, and the beam points to the axis of the fixing ring, the column is sleeved with a first sliding sleeve, the first sliding sleeve is fixedly connected to the second sliding sleeve, the beam passes through the second sliding sleeve, and the end of the beam pointing to the axis of the fixing ring is provided with a hanging block.

[0006] As a preferred technical solution of the utility model, the first sliding sleeve is arranged on the outside of the column, the column and the first sliding sleeve are fixed by a first locking piece, limiting slide strips are arranged on both sides of the column, two groups of limiting grooves are opened on the inner side surface of the first sliding sleeve, and the limiting slide strips are slidably embedded in the limiting grooves.

[0007] As a preferred technical solution of the utility model, the second sliding sleeve is arranged outside the crossbeam, and the crossbeam and the second sliding sleeve are fixed by a second locking member.

[0008] As a preferred technical solution of the utility model, the first locking member and the second locking member both include a handle and a stud, and the stud of the first locking member is threadedly connected to the first sleeve, and the stud of the second locking member is threadedly connected to the second sleeve.

[0009] As a preferred technical solution of the utility model, a first scale is provided on the column.

[0010] As a preferred technical solution of the present utility model, a second scale is provided on the crossbeam.

[0011] As a preferred technical solution of the utility model, an annular groove is provided on the hanging block.

[0012] As a preferred technical solution of the utility model, the elastic member includes a cylinder and a sliding rod, and one end of the sliding rod is slidably embedded in the cylinder, the cylinder has a built-in spring, and one end of the spring is fixed to the sliding rod, and the other end of the spring is fixed to the inner wall of the cylinder.

[0013] As a preferred technical solution of the utility model, a second vertically arranged reinforcement hole is provided on the positioning block, three groups of lugs are welded and fixed on the fixing ring, and a first vertically arranged reinforcement hole is provided on the lugs.

[0014] As a preferred technical solution of the utility model, the elastic anti-slip lining of the positioning block is in close contact with the outer surface of the steel casing, and a steel cage is placed inside the steel casing, and three groups of lifting steel bars are arranged on the upper part of the steel cage, and the lifting steel bars are hung on the lifting block.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. The elastic part of the utility model is adaptively expanded and contracted according to the outer diameter of the steel casing, so that the three groups of positioning blocks are closely attached to the outer surface of the steel casing to achieve preliminary center positioning. After the position of the fixing ring is determined, the anchor bolts are used to pass through the reinforcement holes to fasten the positioning blocks and the fixing rings to the base surface to achieve limited fixation of the positioning blocks and the fixing rings, prevent the overall positioning frame from shaking and displacing, and improve stability. The fixing ring is suitable for steel casings within a certain diameter range, and positioning is quick and convenient.

[0017] 2. The utility model can accurately adjust the horizontal position and height position of the hanging block by observing the scale to ensure the consistency of the position adjustment of the three groups of hanging blocks. When the steel cage is hoisted by the three groups of hanging blocks, the center positioning of the steel cage is achieved, and the steel cage is placed in the center position of the steel casing to prevent the pile foundation from being eccentric after the pile is formed. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the positioning of the fixing ring of the utility model;

[0020] Figure 3 This is a schematic diagram of positioning of the hanging block of the utility model;

[0021] Figure 4 It is a schematic diagram of the structure of the first sliding sleeve, the second sliding sleeve, the first locking member and the second locking member of the utility model;

[0022] Figure 5 It is a structural schematic diagram of the utility model column;

[0023] Figure 6 This is a schematic diagram of the structure of the positioning block and the elastic anti-slip lining of the utility model;

[0024] Figure 7 This is a schematic diagram of the annular groove structure of the hanging block of the utility model;

[0025] Figure 8 It is a schematic diagram of the structure of the first locking member and the second locking member of the utility model.

[0026] In the figure: 1. fixing ring; 11. lug; 12. first reinforcement hole; 2. elastic member; 21. cylinder; 22. slide rod; 23. spring; 3. positioning block; 31. second reinforcement hole; 4. elastic anti-skid lining; 5. positioning assembly; 51. column; 511. first scale; 512. limit slide; 52. first slide sleeve; 521. limit groove; 53. second slide sleeve; 54. crossbeam; 541. second scale; 55. hanging block; 551. annular groove; 56. first locking member; 57. second locking member; 561. handle; 562. stud; 6. steel casing; 7. steel cage. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] See also Figure 1-8The utility model provides a technical solution: a pile foundation positioning frame, including a fixing ring 1, three groups of elastic members 2 are arranged on the inner side surface of the fixing ring 1, the ends of the three groups of elastic members 2 pointing to the axis of the fixing ring 1 are connected to positioning blocks 3, and the inner side surface of the positioning block 3 is provided with an elastic anti-slip lining 4, and the upper end surface of the fixing ring 1 is provided with three groups of positioning components 5, the positioning components 5 include a column 51 and a beam 54, and the beam 54 points to the axis of the fixing ring 1, a first sliding sleeve 52 is sleeved on the column 51, a second sliding sleeve 53 is fixedly connected to the first sliding sleeve 52, the beam 54 passes through the second sliding sleeve 53, and a hanging block 55 is arranged on the end of the beam 54 pointing to the axis of the fixing ring 1.

[0029] Among them, three groups of elastic members 2 are evenly spaced along the circumferential direction of the fixing ring 1, and three groups of positioning components 5 are evenly spaced along the circumferential direction of the fixing ring 1. After the steel casing 6 is buried, Figure 2 As shown, the fixing ring 1 is placed on the periphery of the steel casing 6, and the three groups of elastic members 2 are adaptively expanded and contracted according to the outer diameter of the steel casing 6, so that the elastic anti-slip lining 4 of the three groups of positioning blocks 3 are tightly attached to the outer surface of the steel casing 6, achieving preliminary center positioning.

[0030] Among them, after the position of the fixing ring 1 is determined, the second reinforcement hole 31 of the positioning block 3 is passed through the anchor bolt, and the three groups of positioning blocks 3 are fastened to the base surface, and the three groups of positioning blocks 3 are limited and fixed. The anchor bolt is passed through the first reinforcement hole 12 of the three groups of lugs 11 to fasten the fixing ring 1 to the base surface to ensure the stability of the fixing ring 1 and the positioning block 3, so as to achieve the limited fixation of the fixing ring 1 and the positioning block 3 and prevent the overall positioning frame from shaking and displacement.

[0031] Among them, the first sliding sleeve 52 is slidably mounted on the outside of the column 51, and the column 51 and the first sliding sleeve 52 are fixed by a first locking piece 56. Limiting slides 512 are arranged on both sides of the column 51, and two groups of limiting grooves 521 are opened on the inner side surface of the first sliding sleeve 52, and the limiting slides 512 are slidably embedded in the limiting grooves 521.

[0032] Among them, a through hole is opened on the first sliding sleeve 52, the column 51 passes through the through hole of the first sliding sleeve 52, and the limiting slide bar 512 of the column 51 is slidably embedded in the limiting groove 521. The moving direction of the first sliding sleeve 52 is limited by the cooperation between the limiting groove 521 and the limiting slide bar 512. The first sliding sleeve 52 can only slide axially along the axial direction of the column 51, and cannot rotate relative to the column 51, so that the crossbeam 54 always points to the axis of the fixed ring 1.

[0033] When the first locking member 56 is loosened, the first sliding sleeve 52 can slide along the axial direction of the column 51 , and when the first locking member 56 is tightened, the first sliding sleeve 52 and the column 51 are fastened to each other.

[0034] Among them, the second sleeve 53 is slidably sleeved on the outside of the crossbeam 54, and the crossbeam 54 and the second sleeve 53 are fixed by a second locking piece 57. A through hole is opened on the second sleeve 53, and the crossbeam 54 passes through the through hole of the second sleeve 53. When the second locking piece 57 is loosened, the crossbeam 54 can slide along the axial direction of the second sleeve 53. When the second locking piece 57 is tightened, the second sleeve 53 and the crossbeam 54 are fastened.

[0035] Wherein, the first locking member 56 and the second locking member 57 both include a handle 561 and a stud 562, and the stud 562 of the first locking member 56 is threadedly connected to the first sleeve 52, and the stud 562 of the second locking member 57 is threadedly connected to the second sleeve 53. The first locking member 56 and the second locking member 57 are loosened and tightened manually by forward or reverse rotation, which is easy to operate. When tightening, the stud 562 of the first locking member 56 presses against the column 51 to achieve the fastening between the column 51 and the first sleeve 52, and the stud 562 of the second locking member 57 presses against the beam 54 to achieve the fastening between the beam 54 and the second sleeve 53. When loosening, the stud 562 of the first locking member 56 is away from the column 51, and the fixation between the column 51 and the first sleeve 52 is released, and the stud 562 of the second locking member 57 is away from the beam 54, and the fixation between the beam 54 and the second sleeve 53 is released.

[0036] A first scale 511 is provided on the column 51 , and the height position of the first sliding sleeve 52 on the column 51 can be observed through the first scale 511 , so that the height position of the hanging block 55 can be precisely adjusted.

[0037] A second scale 541 is provided on the crossbeam 54 , and the horizontal extension length of the crossbeam 54 relative to the second sliding sleeve 53 can be observed through the second scale 541 , so as to facilitate accurate adjustment of the horizontal position of the hanging block 55 .

[0038] Among them, the horizontal position and height position of the hanging block 55 can be accurately adjusted through the scale, and the consistency of the position adjustment of the three groups of hanging blocks 55 can be ensured. When the steel cage 7 is hoisted by the three groups of hanging blocks 55, the steel cage 7 can be centrally positioned.

[0039] Among them, three groups of lifting steel bars are pre-arranged on the upper part of the steel cage 7. After the steel cage 7 is placed at a specified depth, the height position and horizontal position of the three groups of lifting blocks 55 are adjusted according to the lifting requirements of the steel cage 7. After the adjustment is completed, the lifting steel bars of the steel cage 7 are respectively hung on the three groups of lifting blocks 55 to achieve the center positioning of the steel cage 7. The steel cage 7 is placed in the center of the steel casing 6 to prevent eccentricity of the pile foundation after pile formation.

[0040] Among them, an annular groove 551 is opened on the lifting block 55. During lifting, the lifting steel bars are embedded in the annular groove 551 of the lifting block 55. The lifting steel bars are limited by the annular groove 551, so as to limit the steel cage 7 and prevent the steel cage 7 from falling off. If the height position of the steel cage 7 needs to be adjusted again, the height position of the sliding sleeve relative to the column 51 can be adjusted, which is convenient for adjustment.

[0041] Among them, the elastic member 2 includes a cylinder 21 and a slide rod 22, and one end of the slide rod 22 is slidably embedded in the cylinder 21. A spring 23 is built into the cylinder 21, and one end of the spring 23 is fixed to the slide rod 22, and the other end of the spring 23 is fixed to the inner wall of the cylinder 21. The elastic member 2 relies on the elastic force of the spring 23 to expand and rebound, so that the fixing ring 1 is suitable for steel casing 6 within a certain diameter range, and positioning is quick and convenient.

[0042] Among them, a vertically arranged second reinforcement hole 31 is opened on the positioning block 3, three groups of lugs 11 are welded and fixed on the fixing ring 1, and a vertically arranged first reinforcement hole 12 is opened on the lug 11. After the position of the fixing ring 1 is determined, the second reinforcement hole 31 of the positioning block 3 is passed through the anchor bolt to fasten the positioning block 3 to the base surface, and the first reinforcement hole 12 of the lug 11 is passed through the anchor bolt to fasten the fixing ring 1 to the base surface to ensure the stability of the fixing ring 1 and the positioning block 3.

[0043] Among them, the elastic anti-slip lining 4 of the positioning block 3 is in close contact with the outer surface of the steel casing 6, and a steel cage 7 is placed inside the steel casing 6, and three groups of lifting steel bars are arranged on the upper part of the steel cage 7, and the lifting steel bars are hung on the hanging block 55. The three groups of lifting steel bars are embedded in the annular groove 551 of the hanging block 55 to effectively prevent falling off.

[0044] Working principle: After the pile foundation steel casing 6 is buried, the fixing ring 1 is placed on the periphery of the steel casing 6. The three sets of elastic members 2 are adaptively extended and retracted according to the outer diameter of the steel casing 6, so that the elastic non-slip lining 4 of the three sets of positioning blocks 3 are tightly attached to the outer surface of the steel casing 6 to achieve preliminary center positioning. After the position of the fixing ring 1 is determined, the anchor bolts are used to pass through the second reinforcement holes 31 of the positioning blocks 3 to fasten the three sets of positioning blocks 3 to the base surface, and the three sets of positioning blocks 3 are limited and fixed. The anchor bolts are used to pass through the first reinforcement holes 12 of the three sets of lugs 11 to fasten the fixing ring 1 to the base surface. To achieve the limited fixation of the fixing ring 1 and the positioning block 3 to prevent the overall positioning frame from shaking and displacement, the steel cage 7 is hoisted by a crane and placed at a certain depth in the steel casing 6. Three groups of hoisting steel bars are pre-arranged on the upper part of the steel cage 7. After the steel cage 7 is placed at the specified depth, the height position and horizontal position of the three groups of hanging blocks 55 are adjusted according to the hoisting requirements of the steel cage 7. After the adjustment is completed, the hoisting steel bars of the steel cage 7 are respectively hung on the three groups of hanging blocks 55 to achieve the center positioning of the steel cage 7 and place the steel cage 7 at the center of the steel casing 6.

[0045] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pile foundation positioning frame, comprising a fixing ring (1), characterized in that: Three groups of elastic members (2) are arranged on the inner side surface of the fixing ring (1), and one end of the three groups of elastic members (2) pointing to the axis of the fixing ring (1) is connected to a positioning block (3), and an elastic anti-slip lining (4) is arranged on the inner side surface of the positioning block (3). Three groups of positioning components (5) are arranged on the upper end surface of the fixing ring (1), and the positioning components (5) include a column (51) and a crossbeam (54), and the crossbeam (54) points to the axis of the fixing ring (1). A first sliding sleeve (52) is sleeved on the column (51), and a second sliding sleeve (53) is fixedly connected to the first sliding sleeve (52). The crossbeam (54) passes through the second sliding sleeve (53), and a hanging block (55) is arranged on one end of the crossbeam (54) pointing to the axis of the fixing ring (1).

2. A pile foundation positioning frame according to claim 1, characterized in that: The first sliding sleeve (52) is slidably mounted on the outside of the column (51); the column (51) and the first sliding sleeve (52) are fixed via a first locking member (56); limiting sliding strips (512) are arranged on both sides of the column (51); two groups of limiting grooves (521) are arranged on the inner side surface of the first sliding sleeve (52), and the limiting sliding strips (512) are slidably embedded in the limiting grooves (521).

3. A pile foundation positioning frame according to claim 2, characterized in that: The second sliding sleeve (53) is slidingly mounted on the outside of the crossbeam (54), and the crossbeam (54) and the second sliding sleeve (53) are fixed by a second locking member (57).

4. A pile foundation positioning frame according to claim 3, characterized in that: The first locking member (56) and the second locking member (57) both comprise a handle (561) and a stud (562), and the stud (562) of the first locking member (56) is threadedly connected to the first sliding sleeve (52), and the stud (562) of the second locking member (57) is threadedly connected to the second sliding sleeve (53).

5. The pile foundation positioning frame according to claim 1, characterized in that: The column (51) is provided with a first scale (511).

6. A pile foundation positioning frame according to claim 1, characterized in that: The crossbeam (54) is provided with a second scale (541).

7. A pile foundation positioning frame according to claim 1, characterized in that: The hanging block (55) is provided with an annular groove (551).

8. The pile foundation positioning frame according to claim 1, characterized in that: The elastic member (2) comprises a cylinder (21) and a slide rod (22), and one end of the slide rod (22) is slidably embedded in the cylinder (21), and a spring (23) is built in the cylinder (21), and one end of the spring (23) is fixed to the slide rod (22), and the other end of the spring (23) is fixed to the inner wall of the cylinder (21).

9. The pile foundation positioning frame according to claim 1, characterized in that: The positioning block (3) is provided with a second reinforcement hole (31) arranged vertically, the fixing ring (1) is provided with three groups of lugs (11) welded and fixedly provided with the lugs (11), and the lugs (11) are provided with a first reinforcement hole (12) arranged vertically.

10. The pile foundation positioning frame according to claim 1, characterized in that: The elastic anti-skid lining (4) of the positioning block (3) is in close contact with the outer surface of the steel casing (6), and a steel cage (7) is placed inside the steel casing (6). Three groups of hanging steel bars are arranged on the upper part of the steel cage (7), and the hanging steel bars are hung on the hanging block (55).

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