A rotatable variable diameter steel cage

Abstract

The invention discloses a rotatable variable-diameter steel bar cage, wherein the upper and lower ends of an inner sleeve are respectively sleeved with main bar limiting disks, and the outer edges of the main bar limiting disks are circumferentially provided with a plurality of main bar limiting holes, the upper ends of the main bars of the steel bar cage are inserted into the main bar limiting holes of the main bar limiting disks at the upper end, and the lower ends of the main bars of the steel bar cage are inserted into the main bar limiting holes of the main bar limiting disks at the lower end; two pressure rotating disks are both located between the two main bar limiting disks and sleeved on the inner sleeve at intervals; a plurality of rotary pushing brackets are hingedly connected to the outer edge of the pressure rotating disk at the upper end, and a plurality of rotary pushing brackets are hingedly connected to the outer edge of the pressure rotating disk at the lower end, and each rotary pushing bracket is connected to the main bars of the steel bar cage; an upper transverse pushing rod is arranged in the pressure rotating disk at the upper end, and a lower transverse pushing rod is arranged in the pressure rotating disk at the lower end, and a grouting pipe extends in a vertical direction, and the upper transverse pushing rod and the lower transverse pushing rod are simultaneously connected to the grouting pipe.

Description

Technical Field

[0001] The invention relates to the technical field of foundation construction, and in particular to a rotatable variable-diameter steel cage. Background Art

[0002] my country is a vast country with a vast territory and complex strata distribution. At present, high-pressure jet expansion head anchor technology is widely used in anti-floating projects, because high-pressure jet expansion head anchor has a high anti-floating bearing capacity. How to ensure that the anti-floating bearing components can play an effective role has become particularly important for the anti-floating bearing components placed in the jet expansion body. Summary of the invention

[0003] To this end, the present invention provides a rotatable variable diameter steel cage to solve the above problems in the prior art.

[0004] In order to achieve the above object, the present invention provides the following technical solutions:

[0005] According to a first aspect of the present invention, a rotatable variable diameter steel cage comprises an inner sleeve, a grouting pipe, a main reinforcement limit plate, main reinforcement of the steel cage, a rotary push support, a pressure rotating plate, an upper transverse push rod and a lower transverse push rod;

[0006] The upper end and the lower end of the inner sleeve are respectively sleeved with the main reinforcement limiting disk, and the outer edge of the main reinforcement limiting disk is circumferentially provided with a plurality of main reinforcement limiting holes, the upper end of the main reinforcement of the steel cage is inserted into the main reinforcement limiting hole of the main reinforcement limiting disk at the upper end, and the lower end of the main reinforcement of the steel cage is inserted into the main reinforcement limiting hole of the main reinforcement limiting disk at the lower end;

[0007] There are two pressure rotating disks, both of which are located between the two main reinforcement limiting disks, and the two pressure rotating disks are sleeved on the inner sleeve at intervals; the outer edge of the pressure rotating disk at the upper end is hinged with a plurality of the rotary pushing brackets, each of which is connected to the main reinforcement of the reinforcement cage; the outer edge of the pressure rotating disk at the lower end is hinged with a plurality of the rotary pushing brackets, each of which is connected to the main reinforcement of the reinforcement cage;

[0008] The upper transverse push rod is arranged in the pressure rotating plate at the upper end, and the lower transverse push rod is arranged in the pressure rotating plate at the lower end. The grouting pipe extends in the vertical direction, and the upper transverse push rod and the lower transverse push rod are connected to the grouting pipe at the same time.

[0009] Furthermore, the length of the lower lateral push rod is greater than that of the upper lateral push rod.

[0010] Furthermore, a pulp outlet is provided in the lower transverse push rod.

[0011] Furthermore, it also includes a limit pin, the pressure rotating disk is a circular sheet structure, and the rotary pushing bracket is hinged at the outer edge of the pressure rotating disk through the limit pin.

[0012] Furthermore, the main reinforcement of the steel cage is a special-shaped structure.

[0013] Furthermore, a plurality of main reinforcement bars of the reinforcement cage are distributed in an annular array at equal intervals around the axis of the inner sleeve.

[0014] Furthermore, it also includes flexible spiral stirrups, which are spirally wound around the outer peripheral side of the plurality of main bars of the steel cage.

[0015] Furthermore, it also includes a steel bar fixing bolt, and the lower end of the inner sleeve is inserted into the steel bar fixing bolt.

[0016] Furthermore, it also includes a guide cap, the lower end of which is provided with a conical section, and the upper end of the guide cap is sleeved on the lower end of the steel bar fixing bolt.

[0017] Furthermore, it also includes an anchor plate bearing body, which is sleeved on the outer peripheral side of the steel bar fixing bolt, and the anchor plate bearing body is arranged above the guide cap.

[0018] The present invention has the following advantages: through the rotatable variable diameter steel cage of the present invention, during high-pressure grouting, the upper and lower double channels push the pressure rotating disk laterally and rotate at the same time, causing the diameter of the steel cage to expand. When it expands to the specified diameter, the high pressure in the upper horizontal pressure push rod is not reduced, causing the cement slurry to release pressure and flow out from the slurry outlet of the lower horizontal pressure push rod under high pressure, ensuring that the upper and lower parts of the steel cage complete the action of expanding the diameter synchronously, and effectively open the steel cage; during the rotation and opening process of the steel cage, if large granular hard objects (calcium nodules, gravel, etc.) are encountered, the resistance that hinders the action point can be transferred during rotation under the action of its rotation pressure, and it will not be stuck by the hard object, which is convenient for smoothly and effectively completing the purpose of increasing the diameter. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the implementation methods of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the implementation methods or the description of the prior art. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0020] The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantial technical significance. Any structural modification, change in proportion or adjustment of size shall still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0021] Figure 1 An overall structural diagram of a rotatable variable diameter steel cage provided for some embodiments of the present invention.

[0022] Figure 2 A structural diagram of a main reinforcement limiting plate of a rotatable variable diameter reinforcement cage provided in some embodiments of the present invention.

[0023] Figure 3 A diagram of the front structure of a pressure rotating disk pressing and pushing on the upper part of a rotatable variable diameter steel cage provided in some embodiments of the present invention.

[0024] Figure 4 A structural diagram of a pressure rotating disk pressing and pushing the upper part of a rotatable variable diameter steel cage provided in some embodiments of the present invention.

[0025] Figure 5 A diagram of the front structure of a pressure rotating disk pressing and pushing the lower part of a rotatable variable diameter steel cage provided in some embodiments of the present invention.

[0026] Figure 6 A structural diagram of a pressure rotating disk pressing and pushing the lower part of a rotatable variable diameter steel cage provided in some embodiments of the present invention.

[0027] Figure 7 A plan view of the structure of a pressure rotating disk of a rotatable variable diameter steel cage provided in some embodiments of the present invention.

[0028] In the figure: 1. inner sleeve, 2. grouting pipe, 3. main reinforcement limit plate, 4. main reinforcement of the steel cage, 5. reinforcement fixing bolts, 6. guide cap, 7. anchor plate bearing body, 8. rotary push bracket, 9. pressure rotating plate, 10. upper transverse push rod, 11. flexible spiral stirrups, 12. main reinforcement limit hole, 13. lower transverse push rod, 14. slurry outlet, 15. limit pin. DETAILED DESCRIPTION

[0029] The following is a description of the implementation of the present invention by specific embodiments. People familiar with the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] like Figures 1 to 7 As shown, a rotatable variable diameter steel cage in the embodiment of the first aspect of the present invention comprises an inner sleeve 1, a grouting pipe 2, a main reinforcement limiting plate 3, a main reinforcement 4 of the steel cage, a rotary pushing bracket 8, a pressure rotating plate 9, an upper transverse pushing rod 10 and a lower transverse pushing rod 13; the upper and lower ends of the inner sleeve 1 are respectively sleeved with main reinforcement limiting plates 3, and the outer edge of the main reinforcement limiting plate 3 is circumferentially provided with a plurality of main reinforcement limiting holes 12, the upper ends of the main reinforcement 4 of the steel cage are inserted into the main reinforcement limiting holes 12 of the main reinforcement limiting plate 3 at the upper end, and the lower ends of the main reinforcement 4 of the steel cage are inserted into the main reinforcement limiting holes 12 of the main reinforcement limiting plate 3 at the lower end; there are two pressure rotating plates 9, and both pressure rotating plates 9 are Located between the two main reinforcement limit plates 3, two pressure rotating plates 9 are spaced apart and sleeved on the inner sleeve 1; the outer edge of the pressure rotating plate 9 at the upper end is hinged with a plurality of rotary pushing brackets 8, and each rotary pushing bracket 8 is connected to the main reinforcement 4 of the steel cage; the outer edge of the pressure rotating plate 9 at the lower end is hinged with a plurality of rotary pushing brackets 8, and each rotary pushing bracket 8 is connected to the main reinforcement 4 of the steel cage; an upper transverse pushing rod 10 is provided in the pressure rotating plate 9 at the upper end, and a lower transverse pushing rod 13 is provided in the pressure rotating plate 9 at the lower end, and the grouting pipe 2 extends in the vertical direction, and the upper transverse pushing rod 10 and the lower transverse pushing rod 13 are connected to the grouting pipe 2 at the same time.

[0031] In the above embodiment, it should be noted that the inner sleeve 1 and the grouting pipe 2 are fixedly arranged, the pressure rotating disk 9 and the sleeve 1 are separated, the pressure rotating disk 9 can rotate around the sleeve 1, and the upper side, lower side or upper and lower sides of the pressure rotating disk 9 are provided with limit plates for limiting the movement of the pressure rotating disk 9 along the length direction of the inner sleeve 1; the main reinforcement limit disk 3 plays a limiting function when the diameter of the steel cage expands; the diameter of the steel cage is expanded by rotating the upper and lower pressure rotating disks 9; the upper transverse push rod 10 ensures that the upper and lower parts of the steel cage rotate and open at the same time; the double transverse push rod device composed of the upper transverse push rod 10 and the lower transverse push rod 13 pushes synchronously under the same high pressure in the same channel; in addition, the inner sleeve 1 can be a PSB reinforcement sleeve.

[0032] The technical effect achieved by the above embodiment is as follows: during high-pressure grouting, the upper and lower double channels push the pressure rotating disk 9 laterally and rotate at the same time, causing the diameter of the steel cage to expand. When it expands to the specified diameter, the high pressure in the upper horizontal pressure push rod 10 is not reduced, causing the cement slurry to release pressure and flow out from the slurry outlet 14 of the lower horizontal pressure push rod 13 under high pressure, ensuring that the upper and lower parts of the steel cage complete the action of expanding the diameter synchronously, and effectively open the steel cage; during the rotation and opening process of the steel cage, if large granular hard objects such as calcium nodules, gravel, etc. are encountered, the resistance that hinders the point of action can be transferred during rotation under the action of its rotation pressure, and it will not be stuck by hard objects, which is convenient for smoothly and effectively completing the purpose of increasing the diameter.

[0033] Optional, such as Figures 1 to 7 As shown, in some embodiments, the length of the lower transverse push rod member 13 is greater than that of the upper transverse push rod member 10 .

[0034] Optional, such as Figures 1 to 7 As shown, in some embodiments, a pulp outlet 14 is provided in the lower transverse push rod 13 .

[0035] In the above optional embodiment, it should be noted that the lower transverse push rod 13 is provided with a slurry outlet 14. After the high-pressure push steel cage is expanded to a specified diameter, the slurry outlet 14 is pushed out to carry out bottom grouting. The slurry outlet 14 can also be called a pressure relief port.

[0036] Optional, such as Figures 1 to 7 As shown, in some embodiments, a limit pin 15 is further included, the pressure rotating disk 9 is a circular sheet structure, and the rotary pushing bracket 8 is hinged at the outer edge of the pressure rotating disk 9 through the limit pin 15.

[0037] In the above optional embodiments, it should be noted that the limiting pin 15 can be made of a cylindrical pin or a bolt.

[0038] Optional, such as Figures 1 to 7 As shown, in some embodiments, the main reinforcement 4 of the reinforcement cage is a special-shaped structure.

[0039] In the above optional embodiments, it should be noted that, for example, Figure 1 As shown, the main reinforcement 4 of the steel cage includes a straight rod section and a curved section fixed at the end of the straight rod section, or can be regarded as a structural form in which a part of the main structure of the main reinforcement 4 of the steel cage is bent outward and protruded.

[0040] The beneficial effects of the above optional embodiments are as follows: the main reinforcement 4 of the steel cage adopts a special-shaped structure, which is beneficial to the continuity, integrity and stability of the whole process of shrinking and expanding the steel cage.

[0041] Optional, such as Figures 1 to 7As shown, in some embodiments, a plurality of main reinforcement cage bars 4 are distributed in an equally spaced annular array around the axis of the inner sleeve 1 .

[0042] In the above optional embodiments, it should be noted that the main rib limiting disk 3 and the pressure rotating disk 9 are both disc-shaped structures.

[0043] Optional, such as Figures 1 to 7 As shown, in some embodiments, flexible spiral stirrups 11 are further included, and the flexible spiral stirrups 11 are spirally wound around the outer peripheral side of the plurality of main reinforcement bars 4 of the steel cage.

[0044] Optional, such as Figures 1 to 7 As shown, in some embodiments, a steel bar fixing bolt 5 is further included, and the lower end of the inner sleeve 1 is inserted into the steel bar fixing bolt 5.

[0045] Optional, such as Figures 1 to 7 As shown, in some embodiments, a guide cap 6 is further included, the lower end of the guide cap 6 is provided with a conical section, and the upper end of the guide cap 6 is sleeved on the lower end of the steel bar fixing bolt 5.

[0046] The beneficial effect of the above optional embodiment is that the lower end of the guide cap 6 is provided with a conical section, which plays a good guiding role.

[0047] Optional, such as Figures 1 to 7 As shown, in some embodiments, an anchor plate bearing body 7 is further included. The anchor plate bearing body 7 is sleeved on the outer peripheral side of the steel bar fixing bolt 5, and the anchor plate bearing body 7 is arranged above the guide cap 6.

[0048] Although the present invention has been described in detail above by general description and specific embodiments, it is obvious to those skilled in the art that some modifications or improvements can be made to the present invention. Therefore, these modifications or improvements made without departing from the spirit of the present invention all belong to the scope of protection claimed by the present invention.

[0049] The terms such as "upper", "lower", "left", "right", "middle", etc. cited in this specification are only for the convenience of description and are not intended to limit the scope of implementation of the present invention. Changes or adjustments to their relative relationships should be regarded as within the scope of implementation of the present invention without substantially changing the technical content.

Claims

1. A rotatable variable diameter steel cage, characterized in that: It comprises an inner sleeve (1), a grouting pipe (2), a main reinforcement limit plate (3), a main reinforcement cage (4), a rotary push support (8), a pressure rotating plate (9), an upper transverse push rod (10) and a lower transverse push rod (13); The upper end and the lower end of the inner sleeve (1) are respectively sleeved with the main reinforcement limiting plate (3), and the outer edge of the main reinforcement limiting plate (3) is circumferentially provided with a plurality of main reinforcement limiting holes (12), the upper end of the main reinforcement (4) of the steel cage is inserted into the main reinforcement limiting hole (12) of the main reinforcement limiting plate (3) at the upper end, and the lower end of the main reinforcement (4) of the steel cage is inserted into the main reinforcement limiting hole (12) of the main reinforcement limiting plate (3) at the lower end; There are two pressure rotating disks (9), both of which are located between the two main reinforcement limiting disks (3), and the two pressure rotating disks (9) are sleeved on the inner sleeve (1) at intervals; the outer edge of the pressure rotating disk (9) located at the upper end is hinged with a plurality of the rotary pushing brackets (8), and each of the rotary pushing brackets (8) is connected to the main reinforcement (4) of the reinforcement cage; the outer edge of the pressure rotating disk (9) located at the lower end is hinged with a plurality of the rotary pushing brackets (8), and each of the rotary pushing brackets (8) is connected to the main reinforcement (4) of the reinforcement cage; The upper lateral push rod (10) is arranged in the pressure rotating disk (9) at the upper end, and the lower lateral push rod (13) is arranged in the pressure rotating disk (9) at the lower end. The grouting pipe (2) extends in the vertical direction, and the upper lateral push rod (10) and the lower lateral push rod (13) are connected to the grouting pipe (2) at the same time. The length of the lower lateral push rod (13) is greater than that of the upper lateral push rod (10); It also comprises a steel bar fixing bolt (5), and the lower end of the inner sleeve (1) is inserted into the steel bar fixing bolt (5).

2. The rotatable variable diameter steel cage according to claim 1, characterized in that: The lower transverse push rod (13) is provided with a pulp outlet (14).

3. The rotatable variable diameter steel cage according to claim 1, characterized in that: It also includes a limit pin (15), the pressure rotating disk (9) is a circular sheet structure, and the rotary pushing bracket (8) is hinged to the outer edge of the pressure rotating disk (9) through the limit pin (15).

4. The rotatable variable diameter steel cage according to claim 1, characterized in that: The main reinforcement (4) of the reinforcement cage is a special-shaped structure.

5. The rotatable variable diameter steel cage according to claim 4, characterized in that: The plurality of main reinforcement cage bars (4) are distributed in an annular array at equal intervals around the axis of the inner sleeve (1).

6. The rotatable variable diameter steel cage according to claim 5, characterized in that: It also comprises flexible spiral stirrups (11), wherein the flexible spiral stirrups (11) are spirally wound around the outer peripheral sides of the plurality of main reinforcement bars (4) of the reinforcement cage.

7. The rotatable variable diameter steel cage according to claim 1, characterized in that: It also comprises a guide cap (6), the lower end of which is provided with a conical section, and the upper end of which is sleeved on the lower end of the steel bar fixing bolt (5).

8. The rotatable variable diameter steel cage according to claim 7, characterized in that: It also comprises an anchor plate bearing body (7), wherein the anchor plate bearing body (7) is sleeved on the outer peripheral side of the steel bar fixing bolt (5), and the anchor plate bearing body (7) is arranged above the guide cap (6).

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