CN218521778U - Clamping and fixing device for sleeve pulling hole of rotary excavating full-sleeve cast-in-place pile - Google Patents

Abstract

The utility model is suitable for a bored concrete pile construction technical field provides a dig full sleeve pipe bored concrete pile sleeve pipe soon and play and pull out drill way centre gripping fixing device for fixed cover pipe assembly, including loop forming element, screw rod lock subassembly and cam lock subassembly. The annular part is provided with a mounting hole for the sleeve assembly to pass through; the screw lock assembly is fixed on the circumferential wall of the annular piece and comprises a screw reciprocating towards the direction of the circle center of the assembly hole; the cam lock component is rotatably connected to the circumferential wall of the annular piece, and the screw lock component and the cam lock component are arranged in a non-contact manner; the screw and the cam lock component are respectively abutted against the sleeve component so that the sleeve component is fixed in the assembling hole. The device utilizes the screw lock subassembly and cam lock subassembly to bear the gravity that does not pull out the thimble assembly in the hole, fixes the thimble assembly, prevents that the thimble assembly from sinking.

Description

Clamping and fixing device for sleeve pulling hole of rotary excavating full-sleeve cast-in-place pile

Technical Field

The utility model belongs to the technical field of the bored concrete pile construction, especially, relate to a dig full sleeve pipe bored concrete pile sleeve pipe soon and pull out drill way centre gripping fixing device.

Background

For a deep foundation pit with the excavation depth of about 30m, when cast-in-place pile construction is carried out on the ground, the pile top elevation is located at the bottom position of the foundation pit, and an empty pile with the depth of about 30m is generated from the pile top position to the ground. When the upper hollow pile section has deep and thick mud, sand layer and other bad strata, in order to prevent hole collapse and hole shrinkage of the drill hole, a deep and long sleeve is usually sunk to protect the wall. The method generally adopted at present has the following three methods, firstly, a full-casing full-slewing drilling machine is adopted to match with a grab bucket to take soil, and the drilling machine hydraulically sinks to grow a casing; secondly, adopting a full-casing full-slewing drilling machine to match with a rotary excavator to take earth, and hydraulically sinking the drilling machine to put a long casing; thirdly, a vibration hammer is used for sinking the deep and long casing pipe, and then a rotary excavating machine is used for drilling. The three methods all need two large-scale equipment for construction, the matching requirement of machines is high, the construction process is complex, the site occupation is large, and great difficulty is brought to construction management and safe production.

In order to solve the problem of placing a deep and long retaining cylinder of a retaining wall in a bad stratum and overcome the defects existing when the retaining cylinder is buried underground, a rotary drilling full-sleeve pipe following pore-forming process is adopted, synchronous retaining walls in the drilling process can be realized only by using a rotary drilling machine, when a rotary drilling rig is constructed, a power head pressure plate of the drilling rig is refitted into a special sleeve connector, and the lower end of the connector is connected with a retaining wall steel sleeve through a connecting pin. When the rotary drilling rig forms a hole, the rotary drilling rig outputs torque and pressure through a power head, a rotary drilling bucket is adopted to take soil in the sleeve, the steel sleeve is synchronously driven to sink and drill along with the sleeve, and the steel sleeve is pressed downwards in sections until the bottom of the sleeve enters a stable stratum above the elevation of the pile top; then, a rotary drilling rig is continuously adopted to complete hole forming of the solid pile section to a final hole, and after a steel reinforcement cage and a guide pipe are arranged, pile body concrete is poured to the elevation position of the pile top; after the pile is formed by pouring, the steel sleeve of the protecting wall is pulled out in sections. When the first section of sleeve is pulled out from the orifice and is detached, the sleeve which is not pulled out from the upper hollow hole section of the drill hole can sink under the action of gravity, and a sleeve clamping device needs to be arranged at the orifice, so that the sleeve which is not pulled out from the lower part can be fixed at the orifice to prevent the sleeve from sinking when the first section of sleeve is detached.

Therefore, when the deep and long retaining wall steel sleeve is pulled out, the hole clamping device is adopted to fix the sleeve, and the effects of convenience in operation, safety and reliability are achieved.

SUMMERY OF THE UTILITY MODEL

The utility model provides a pair of dig full sleeve pipe bored concrete pile sleeve pipe soon and play and pull out drill way centre gripping fixing device aims at solving and can sunken problem under the action of gravity when dismantling the sleeve pipe.

The utility model provides a dig whole sleeve pipe bored concrete pile sleeve pipe soon and pull out drill way centre gripping fixing device for the fixed sleeve subassembly includes:

a ring member having a fitting hole through which the sleeve assembly passes;

the screw lock assembly is fixed on the circumferential wall of the annular piece and comprises a screw rod which moves towards the direction of the circle center of the assembly hole in a reciprocating mode;

a cam lock assembly rotatably connected to the circumferential wall of the annular member, the screw lock assembly being disposed in non-contact with the cam lock assembly;

the screw and the cam lock assembly are respectively abutted against the sleeve assembly, so that the sleeve assembly is fixed in the assembling hole.

Optionally, the screw lock assembly further comprises a support plate fixed to the circumferential wall of the annular member, and the screw is in threaded connection with the support plate so that the screw can at least partially extend into the assembly hole.

Optionally, the screw lock subassembly still includes the spanner pole, spanner pole fixed connection in keep away from of screw rod the one end of pilot hole, just the screw rod with be formed with between the spanner pole and predetermine the contained angle.

Optionally, the screw lock assembly is provided with at least two groups, and the two groups are uniformly distributed on the circumferential wall of the annular member.

Optionally, the cam lock assembly comprises a seat fixedly connected to the circumferential wall of the ring member and a cam rotatably connected to the seat such that the cam at least partially extends into the mounting hole.

Optionally, one side of the cam facing the assembly hole is arc-shaped and is distributed with a plurality of saw teeth.

Optionally, the cam lock assembly further comprises a handle fixedly connected to the cam on a side away from the assembly hole.

Optionally, the cam lock assembly is provided with at least two groups and is uniformly distributed on the circumferential wall of the annular piece; and/or the presence of a gas and/or,

the device also comprises a base assembly, wherein the base assembly is provided with a through hole, the annular piece is fixedly installed on the base assembly, and the position of the through hole corresponds to the assembly hole.

Optionally, the device further comprises a limiting assembly fixedly mounted on the circumferential wall of the ring-shaped member.

Optionally, two groups of limiting assemblies are arranged and are respectively positioned between the two cam lock assemblies; and/or the presence of a gas in the atmosphere,

the sleeve assembly comprises a sleeve and a limiting bulge matched and clamped with the screw, and the limiting bulge is arranged on the wall of the sleeve.

Compared with the prior art, the beneficial effects of the utility model reside in that:

the application provides a centre gripping fixing device sets up screw lock subassembly and cam lock subassembly on the circumference wall of loop forming element, and the screw rod part stretches into in the mounting hole and thimble assembly forms the joint, forms the butt at cooperation cam lock subassembly and thimble assembly to make the thimble assembly fix, and can not sink, consequently, simple operation and safe and reliable when dismantling the thimble assembly.

Drawings

Fig. 1 is a schematic plan view of a clamping fixture according to the present invention;

fig. 2 is a schematic perspective view of a clamping fixture according to the present invention;

fig. 3 is a schematic view of the combination of the clamping fixture and the sleeve assembly provided by the present invention.

The reference numbers indicate:

100. a clamping fixture; 110. an annular member; 111. an assembly hole; 112. a circumferential wall; 120. a screw lock assembly; 121. a screw; 122. a support plate; 1221. a first support plate; 1222. a second support plate; 123. a spanner bar; 130. a cam lock assembly; 131. a support; 132. a cam; 1321. saw teeth; 133. A handle; 140. a base assembly; 141. u-shaped steel; 142. a steel plate; 143. a hoisting ring; 150. a limiting component; 151. positioning a plate; 152. positioning a block;

200. a cannula assembly; 210. a sleeve; 220. and a limiting bulge.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

1-3, a rotary excavating full casing 210 cast-in-place pile casing 210 pull-out orifice clamp fixture 100 for securing casing assembly 200 includes an annular member 110, a screw lock assembly 120, and a cam lock assembly 130. Ring member 110 has a fitting hole 111 through which ferrule assembly 200 passes; the screw lock assembly 120 is fixed on the circumferential wall 112 of the annular member 110, and the screw lock assembly 120 comprises a screw 121 reciprocating towards the direction of the circle center of the assembly hole 111; the cam lock assembly 130 is rotatably connected to the circumferential wall 112 of the ring 110, and the screw lock assembly 120 is disposed in non-contact with the cam lock assembly 130; the screw 121 and the cam lock assembly 130 are respectively abutted against the sleeve assembly 200, so that the sleeve assembly 200 is fixed in the assembly hole 111. Illustratively, the diameter of assembly aperture 111 is greater than the diameter of ferrule assembly 200 such that ferrule assembly 200 can pass through assembly aperture 111. And the screw lock assembly 120 and the cam lock assembly 130 are both disposed on the circumferential wall 112 of the ring 110. Screw lock assembly 120 functions primarily to temporarily secure ferrule assembly 200 within assembly bore 111 during withdrawal of upper ferrule assembly 200. Screw 121 partially extends into mounting hole 111 to engage with ferrule assembly 200, and engages with ferrule assembly 200 at mating cam lock assembly 130, thereby allowing ferrule assembly 200 to be held without sinking, thereby facilitating handling and ensuring safety during removal of ferrule assembly 200.

As shown in fig. 1 and 2, the screw lock assembly 120 further includes a support plate 122, the support plate 122 is fixed to the circumferential wall 112 of the annular member 110, and the screw 121 is threadedly coupled with the support plate 122 to allow the screw 121 to at least partially extend into the mounting hole 111. Illustratively, the support plate 122 includes a first support plate 1221 and a first support plate 1222, the first support plate 1221 is welded to the top of the circumferential wall 112 of the ring 110, and the first support plate 1222 is welded to the outside of the circumferential wall 112 of the ring 110. Two nuts are welded between the first support plate 1221 and the first support plate 1222, and holes are formed at positions of the first support plate 1221 corresponding to the nuts, so that the screw 121 is screwed with the nuts and the screw 121 at least partially extends into the assembly hole 111 through the holes. It should be noted that the first support plate 1221 and the first support plate 1222 are both fixed to the ring member 110 by welding.

As shown in fig. 1 and 2, as an embodiment, the screw lock assembly 120 further includes a wrench rod 123, the wrench rod 123 is fixedly connected to an end of the screw 121 far away from the mounting hole 111, and a predetermined included angle is formed between the screw 121 and the wrench rod 123. Illustratively, in the present embodiment, the trigger lever 123 is provided for saving labor. The preset included angle is 90 °, however, in a specific application, the preset included angle is not limited to 90 °, and other angles are also possible.

As shown in fig. 1 and 2, in one embodiment, the screw lock assembly 120 is provided in at least two groups and is uniformly distributed on the circumferential wall 112 of the ring member 110. Illustratively, in the present embodiment, two sets of screw lock assemblies 120 are provided, and two sets of screw lock assemblies 120 are provided. Such that the force is uniform when cannula assembly 200 is secured. Of course, the number of screw lock assemblies 120 is not limited to this in a particular application, and may be three or four, for example, as an embodiment.

As shown in fig. 1 and 2, the cam lock assembly 130 includes a support 131 and a cam 132, the support 131 is fixedly connected to the circumferential wall 112 of the ring member 110, and the cam 132 is rotatably connected to the support 131 such that the cam 132 at least partially extends into the assembly hole 111. Illustratively, the support 131 is fixed to the ring 110 by welding, and the support 131 is hinged to the cam 132.

As shown in fig. 1 and 2, in one embodiment, the cam 132 has an arc shape facing the mounting hole 111, and a plurality of saw teeth 1321 are distributed. Illustratively, serrations 1321 serve to increase friction and ensure that sleeve assembly 200 does not fall, that sleeve assembly 200 sinks harder, and that serrations 1321 on cam 132 catch, thereby effectively ensuring that sleeve assembly 200 does not sink. The serrations 1321 are continuously arranged in an arc shape, and a part of the smooth curved surface is left on the side of the cam 132 facing the mounting hole 111. The cam lock assembly 130 functions to grip the ferrule assembly 200 and the supplemental screw lock assembly 120 bears the weight of the ferrule assembly 200. Cam 132 has continuous serrations 1321, and when serrations 1321 contact the outer wall of sleeve assembly 200, cam 132 serrations 1321 will act as a grip, and if sleeve assembly 200 has a tendency to sag, the continuous serrations 1321 will grip the sleeve assembly 200 more tightly, resisting the sag of sleeve 210 by friction between serrations 1321 and sleeve assembly 200.

As shown in fig. 1 and 2, the cam lock assembly 130 further includes a handle 133, and the handle 133 is fixedly connected to a side of the cam 132 away from the mounting hole 111. Illustratively, handle 133 is welded to cam 132, and depressing or raising handle 133 rotates cam 132 and allows serrations 1321 to engage and disengage sleeve assembly 200. Specifically, when the handle 133 is depressed, the cam 132 rotates about the bolt axis, releasing the cam lock assembly 130 when the cam 132 is disengaged from the sleeve assembly 200; when it is desired to grip cannula assembly 200, handle 133 can be lifted and teeth 1321 of cam 132 can be brought into contact with the outer wall of cannula assembly 200 to provide a grip.

As shown in fig. 1 and 2, the cam lock assembly 130 is provided in at least two sets and is uniformly distributed on the circumferential wall 112 of the ring member 110. Illustratively, in the present embodiment, six sets of cam lock assemblies 130 are provided, and the six sets of cam lock assemblies 130 are uniformly circumferentially distributed on the circumferential wall 112 of the ring 110. Multiple sets of cam lock assemblies 130 are provided to ensure that ferrule assembly 200 is snapped in multiple orientations to ensure that ferrule assembly 200 does not sink or fall out. Of course, the number of cam lock assemblies 130 is not limited to this in a particular application, and may be four, five, etc. as an example.

As shown in fig. 1 and 2, the apparatus further includes a base assembly 140, the base assembly 140 having a through hole, and the ring member 110 is fixedly mounted on the base assembly 140, and the through hole is located corresponding to the mounting hole 111. Illustratively, the base assembly 140 is a square structure, and is composed of a U-shaped steel 141 and a perforated steel plate 142, which are connected by welding. The frame of the base assembly 140 is formed by enclosing four equal-length U-shaped steels 141, steel plates 142 are laid on the upper portions of the U-shaped steels 141, and through holes are formed in the steel plates 142 so that the thimble assembly 200 can pass through the through holes. U-section steel 141 is cold-bent from a steel plate 142. The platform base acts as a base for the clamping structure, transferring the weight of ferrule assembly 200 to the ground. For the convenience of hoisting, 4 hoisting rings 143 are provided at four corners of the steel plate 142.

As shown in fig. 1 and 2, the device further includes a limiting assembly 150, and the limiting assembly 150 is fixedly mounted on the circumferential wall 112 of the annular member 110. Illustratively, the position limiting assembly 150 is composed of a positioning plate 151 and a positioning block 152, and a 30 degree angle is formed between the position limiting assembly 150 and the cam lock assembly 130

The included angle is arranged, the positioning plate 151 is perpendicular to the annular part 110, and the bottom of the positioning plate 151 is welded with the base; the positioning block 152 is welded to an end of the positioning plate 151, is at the same height as the positioning plate 151, and is located inside the ring member 110. When the device is hoisted, the limiting component 150 has a limiting effect, so that the device can be conveniently centered, and the center of the device is close to the center of the sleeve 210 as much as possible.

As shown in fig. 1 and 2, as an embodiment, two sets of the limiting assemblies 150 are provided, and are respectively located between the two cam lock assemblies 130. Illustratively, in the present embodiment, the limiting assemblies 150 are disposed between two adjacent sets of cam lock assemblies 130, and only one set of cam lock assemblies 130 is spaced between the limiting assemblies 150.

As shown in fig. 1 and 3, the sleeve assembly 200 includes a sleeve 210 and a stop protrusion engaged with the screw 121, and the stop protrusion is disposed on a wall of the sleeve 210. Illustratively, sleeve assembly 200 comprises two limiting protrusions welded on the outer wall of sleeve 210, in this embodiment, the limiting protrusions are short steel bars, the short steel bars are welded in the middle of sleeve 210 near the upper joint, the elevation positions of the two short steel bars are the same, the short steel bars are symmetrically welded, and the diameter of the short steel bars is 25mm, and the length of the short steel bars is 120mm. The short length of rebar acts to transfer the weight of tube assembly 200 to screw 121 of screw lock assembly 120.

As shown in fig. 1, 2 and 3, when the sleeve assembly 200 in the assembly hole 111 needs to be fixed, the sleeve assembly 200 is rotated first, and the limit protrusion is moved to a position right above the screw 121; then, the wrench rod 123 is rotated clockwise to push the screw rod 121 to the edge of the sleeve assembly 200; and then lowering casing assembly 200, placing a limit protrusion on screw 121, transmitting the gravity of casing assembly 200 to screw 121 by the limit protrusion, and fixing casing 210 by screw 121 lock. When the fixing sleeve assembly 200 needs to be released, the sleeve assembly 200 is lifted, the limiting protrusions are separated from contact with the screw rod 121, and then the wrench rod 123 is rotated anticlockwise to retract the screw rod 121, so that the fixing can be released.

The working principle of the device is as follows:

as shown in fig. 3, the apparatus uses the screw lock assembly 120 and the cam lock assembly 130 to bear the weight of the un-extracted ferrule assembly 200 within the hole, secures the ferrule assembly 200, prevents the ferrule assembly 200 from sinking, and transmits the weight of the ferrule assembly 200 to the ground through the platform base. In practical applications, the unplugged sleeve assembly 200 transfers the gravity to the screw 121 of the screw lock assembly 120 through short steel bars welded to the outer wall thereof; the cam lock assembly 130 assists the screw lock assembly 120 in sharing the weight of the barrel assembly 200 by the friction between the serrations 1321 and the barrel assembly 200.

All possible combinations of the technical features of the above embodiments may not be described for the sake of brevity, but should be considered as within the scope of the present disclosure as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims (10)

1. The utility model provides a dig full sleeve pipe bored concrete pile sleeve pipe soon and pull out drill way centre gripping fixing device for fixed sleeve subassembly, its characterized in that includes:

a ring member having a fitting hole through which the sleeve assembly passes;

the screw lock assembly is fixed on the circumferential wall of the annular piece and comprises a screw rod which moves towards the direction of the circle center of the assembly hole in a reciprocating mode;

the cam lock assembly is rotatably connected to the circumferential wall of the annular piece, and the screw lock assembly and the cam lock assembly are arranged in a non-contact mode;

the screw and the cam lock assembly are respectively abutted against the sleeve assembly, so that the sleeve assembly is fixed in the assembling hole.

2. The clamping and fixing device for the pipe drawing hole of the rotary excavating full casing cast-in-place pile according to claim 1, characterized in that the screw lock assembly further comprises a support plate fixed on the circumferential wall of the annular member, and the screw is in threaded connection with the support plate so as to be at least partially inserted into the assembly hole.

3. The device for clamping and fixing the pulling hole of the rotary excavating full casing cast-in-place pile casing according to claim 1, wherein the screw lock assembly further comprises a wrench rod, the wrench rod is fixedly connected to one end of the screw rod, which is far away from the assembling hole, and a preset included angle is formed between the screw rod and the wrench rod.

4. The device for clamping and fixing the pipe drawing orifice of the rotary excavating full casing cast-in-place pile according to claim 1, wherein at least two groups of screw lock assemblies are arranged and are uniformly distributed on the circumferential wall of the annular member.

5. The device for clamping and fixing the sleeve drawing hole of the rotary excavating full casing cast-in-place pile according to claim 1, characterized in that the cam lock assembly comprises a support and a cam, the support is fixedly connected to the circumferential wall of the annular member, and the cam is rotatably connected with the support so that the cam at least partially extends into the assembly hole.

6. The device for clamping and fixing the pulling hole of the rotary excavating full casing cast-in-place pile casing according to claim 5, wherein one side of the cam facing the assembly hole is arc-shaped and is distributed with a plurality of saw teeth.

7. The rotary excavating full casing bored concrete pile casing pipe pulling orifice clamping fixing device according to claim 5, wherein the cam lock assembly further comprises a handle fixedly connected to the cam and a side away from the assembly hole.

8. The device for clamping and fixing the sleeve pulling hole of the rotary excavating full-casing cast-in-place pile according to any one of claims 1 to 7, wherein at least two groups of cam lock assemblies are arranged and are uniformly distributed on the circumferential wall of the annular member; and/or the presence of a gas in the atmosphere,

the device also comprises a base assembly, wherein the base assembly is provided with a through hole, the annular piece is fixedly installed on the base assembly, and the position of the through hole corresponds to the assembly hole.

9. The device for clamping and fixing the sleeve pulling hole of the rotary excavating full-casing cast-in-place pile according to any one of claims 1 to 7, further comprising a limiting component, wherein the limiting component is fixedly installed on the circumferential wall of the annular member.

10. The device for clamping and fixing the sleeve pulling hole of the rotary excavating full-sleeve cast-in-place pile according to claim 9, wherein two groups of limiting assemblies are arranged and are respectively positioned between the two cam lock assemblies; and/or the presence of a gas and/or,

the thimble assembly includes the sleeve pipe, with the spacing arch of screw rod cooperation joint, spacing arch set up in on the sheathed tube pipe wall.

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