Wedge-shaped assembly type reinforcement cage connecting sleeve

Abstract

The utility model relates to the technical field of reinforcement cage connection, in particular to a wedge-shaped assembly type reinforcement cage connecting sleeve which comprises a twisted steel bar, an inner sleeve and an outer sleeve, the inner sleeve is internally and coaxially connected with a butt joint end of the twisted steel bar to be in butt joint, and the outer sleeve is internally and coaxially connected with a butt joint end of another twisted steel bar to be in butt joint. The inner sleeve and the outer sleeve are coaxially and oppositely arranged, and the inner sleeve is detachably connected to one end of the outer sleeve and used for achieving butt joint of the butt joint ends of the two twisted steel bars. The defects that steel bar threads need to be machined in a straight thread sleeve connection mode and auxiliary crimping tools are needed in an extrusion mode are overcome, the problems that welding is time-consuming and labor-consuming, quality cannot be guaranteed and the environment is polluted are solved, high-quality connection of steel bar cage orifices is achieved, cage descending time is shortened, operation efficiency is improved, and the field mechanical operation level is improved. The pile-forming construction quality is ensured, and the on-site intrinsic safety level is promoted to be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of steel cage connection, in particular to a wedge-shaped assembled steel cage connection sleeve. Background Art

[0002] In cast-in-place pile construction, due to the long steel cage, it needs to be processed in sections before the hole connection. The commonly used methods mainly include: 1. Single-sided or double-sided lap welding of the main reinforcement; 2. Connection with a straight threaded sleeve. In the former, the main reinforcement welding part needs to be pre-bent, the main reinforcement welding time is long, and the technical level of the welder is relatively high. The welding efficiency is low, the connection quality cannot be guaranteed, and there are many links in the safety control of electricity use, which poses certain safety hazards; in the latter, the steel bars need to be threaded in the early stage, and the processed steel cage needs to be pre-assembled. The steel cage alignment is complicated, the connection time is long, and the hole connection exposed teeth do not meet the specification requirements. In the above two methods, the steel cage docking time is relatively long, and the longer one accounts for 70%-80% of the entire steel cage lowering time. The docking speed directly affects the cage lowering time. For some areas with poor geological conditions, it threatens the quality of the pile. Utility Model Content

[0003] The utility model aims to provide a wedge-shaped assembled steel cage connecting sleeve to solve the technical problems of complex steel cage alignment and long connection time in the prior art.

[0004] To achieve the above purpose, the technical solution of the utility model is as follows:

[0005] A wedge-shaped assembled steel cage connecting sleeve comprises: a threaded steel bar, an inner sleeve and an outer sleeve, wherein the inner sleeve is coaxially connected to a butt end of a threaded steel bar to be butted, and the outer sleeve is coaxially connected to another butt end of a threaded steel bar to be butted, the inner sleeve and the outer sleeve are coaxially arranged opposite to each other, and the inner sleeve is detachably connected to one end of the outer sleeve to achieve butt connection of two butt ends of the threaded steel bars.

[0006] Furthermore, it also includes: a wedge component, which is provided with two groups. The two groups of wedge components are respectively wedge-shaped connected to the inner walls of the inner sleeve and the outer sleeve for pressing and fixing two threaded steel bars to be connected, and each group of wedge components includes two wedge blocks arranged oppositely.

[0007] Furthermore, a first wedge-shaped hole axially extending through the inner sleeve is provided inside, the first wedge-shaped hole is funnel-shaped, and the slope portion of the first wedge-shaped hole is wedge-shapedly connected with two oppositely arranged wedge blocks, and the inner walls of the two oppositely arranged wedge blocks are in tight contact with the outer walls of the threaded steel bars in the inner sleeve.

[0008] Furthermore, a second wedge-shaped hole is provided on one side of the inner part of the outer sleeve, and the second wedge-shaped hole is conical. A mounting circular hole is provided on the other side of the inner part of the outer sleeve, and one end of the mounting circular hole is connected to the large-mouthed end of the second wedge-shaped hole to realize axial penetration of the outer sleeve. Two oppositely arranged wedge blocks are wedge-shapedly connected in the second wedge-shaped hole, and the inner walls of the two oppositely arranged wedge blocks are in pressurized contact with the outer wall of the threaded steel bar in the outer sleeve.

[0009] Furthermore, the wedge assembly is in the shape of a cone, the outer wall diameter of the wedge block on one side close to the butt end of the threaded steel bar is larger than the outer wall diameter on the other side, the inner wall diameters at both ends of the wedge block are the same, the two oppositely arranged wedge blocks in the same wedge assembly do not contact each other on their opposite sides, and the slope of the outer wall of the wedge block is the same as the slope of the first wedge hole and the slope of the second wedge hole.

[0010] Furthermore, it also includes: a retaining spring, an arc-shaped groove is opened on the outer wall of the large head end of the wedge block, and the retaining spring is clamped and fixed in the arc-shaped grooves on the two wedge blocks in the same wedge assembly.

[0011] Furthermore, an inner wall of the mounting circular hole close to the port side is provided with an internal thread groove, an outer wall of the inner sleeve is provided with an external thread, the external thread is threadedly connected to the internal thread groove, and the diameter of the outer wall of the inner sleeve is the same as the diameter of the mounting circular hole.

[0012] Furthermore, a threaded structure protrusion is provided on the inner wall of the wedge block.

[0013] Furthermore, a hexagonal groove cooperating with an adjustable wrench is formed on a side of the inner sleeve away from the butt end of the threaded steel bar, and a wrench groove cooperating with the adjustable wrench is formed on a side of the outer sleeve away from the butt end of the threaded steel bar.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] By exploring new connection methods and adopting wedge-shaped force-bearing structures and mechanical connection methods, we have solved the shortcomings of the straight thread sleeve connection method that requires processing of steel bar threads and the extrusion method that requires auxiliary crimping tools, and have overcome the problems of welding being time-consuming and labor-intensive, with quality assurance and environmental pollution. We have achieved high-quality connection of the steel cage orifices, shortened the cage lowering time, improved work efficiency, enhanced the level of on-site mechanized operations, ensured the quality of pile construction, and promoted the improvement of the on-site inherent safety level. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural sectional view of the utility model;

[0017] Figure 2 This is a structural view of the inner sleeve and its internal connection structure in the utility model;

[0018] Figure 3 This is a structural view of the inner and outer sleeves and the wedges corresponding thereto of the utility model;

[0019] Figure 4 It is a structural view of the wedge-shaped component in the utility model.

[0020] The numbers in the accompanying drawings are: 1-threaded steel bar, 2-inner sleeve, 3-outer sleeve, 4-wedge block, 5-circlip. DETAILED DESCRIPTION

[0021] The utility model is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0022] See also Figures 1 to 4 As shown, a wedge-shaped assembled steel cage connecting sleeve includes: a threaded steel bar 1, an inner sleeve 2 and an outer sleeve 3, the inner sleeve 2 is coaxially connected to a butt end of a threaded steel bar 1 to be butted, the outer sleeve 3 is coaxially connected to another butt end of a threaded steel bar 1 to be butted, the inner sleeve 2 and the outer sleeve 3 are coaxially arranged opposite to each other, and the inner sleeve 2 is detachably connected to one end of the outer sleeve 3 to achieve butt connection of the butt ends of two threaded steel bars 1.

[0023] In this embodiment, the wedge-shaped assembled steel cage connecting sleeve also includes: a wedge-shaped component, which is provided with two groups. The two groups of wedge components are respectively wedge-shaped connected to the inner walls of the inner sleeve 2 and the outer sleeve 3 for compressing and fixing the two threaded steel bars 1 to be connected, and each group of wedge components includes two oppositely arranged wedge blocks 4; an axially penetrating first wedge-shaped hole is opened inside the inner sleeve 2, and the first wedge-shaped hole is funnel-shaped, and the slope part of the first wedge-shaped hole is wedge-shaped connected with two oppositely arranged wedge blocks 4, and the inner walls of the two oppositely arranged wedge blocks 4 are in pressurized contact with the outer walls of the threaded steel bars 1 in the inner sleeve 2; a second wedge-shaped hole is opened on one side of the inner sleeve 3, and the second wedge-shaped hole is conical, and an installation circular hole is opened on the other side of the inner sleeve 3, and one end of the installation circular hole is connected to the large mouth end of the second wedge-shaped hole to realize the axial penetration of the outer sleeve 3, and two oppositely arranged wedge blocks 4 are wedge-shaped in the second wedge hole, and the inner wall of the two oppositely arranged wedge blocks 4 is in pressurized contact with the outer wall of the threaded steel bar 1 in the inner sleeve 2. The wall is pressed and contacted with the outer wall of the threaded steel bar 1 in the outer sleeve 3; the wedge assembly is conical, and the outer wall diameter of the wedge block 4 on the side close to the butt end of the threaded steel bar 1 is larger than the outer wall diameter on the other side. The inner wall diameters at both ends of the wedge block 4 are the same, and the two oppositely arranged wedge blocks 4 in the same wedge assembly do not contact each other on the opposite sides, and the slopes of the outer walls of the wedge blocks 4 are the same as the slopes of the first wedge hole and the second wedge hole, respectively; an internal thread groove is provided on the inner wall of the installation circular hole close to the port, and an external thread is provided on the outer wall of the inner sleeve 2, which is threadedly connected to the internal thread groove, and the outer wall diameter of the inner sleeve 2 is the same as the diameter of the installation circular hole; by threading the inner sleeve 2 on the outer sleeve 3 and tightening the threads, the inner and outer sleeves are connected as a whole and are in close contact with the wedge surface of the wedge block 4. During the tension of the steel cage, an extrusion force is generated by the wedge structure, providing greater friction to ensure the reliable strength of the connection.

[0024] In this embodiment, the wedge-shaped assembled steel cage connecting sleeve also includes: a retaining spring 5, an arc-shaped groove is opened on the outer wall of the large end of the wedge block 4, and the retaining spring 5 is clamped and fixed in the arc-shaped groove on the two wedge blocks 4 in the same wedge-shaped component. The provided retaining spring 5 facilitates the connection of the two wedge blocks in the same group together.

[0025] In this embodiment, a threaded structure protrusion is provided on the inner wall of the wedge block 4 so as to have a larger contact area with the threaded steel bar 1 and generate a greater friction force.

[0026] In this embodiment, a hexagonal groove that cooperates with an adjustable wrench is opened on the side of the inner sleeve 2 away from the butt end of the threaded steel bar 1, and a wrench groove that cooperates with an adjustable wrench is opened on the side of the outer sleeve 3 away from the butt end of the threaded steel bar 1. Two adjustable wrenches are used to fix the opposite ends of the inner sleeve 2 and the outer sleeve 3 respectively, and twist them in opposite directions to tighten the threads of the inner sleeve 2 and the outer sleeve 3.

[0027] The steps are as follows:

[0028] 1. Prepare an adjustable wrench for locking the inner and outer sleeves; an F wrench for aligning and straightening the threaded steel bars on site; prepare a hoist for fine-tuning the axial size of the steel cage;

[0029] 2. During the lifting process, use as many lifting points as possible to avoid excessive concentration of force on the steel cage, which may cause local deformation;

[0030] 3. The vertical hanging points of the steel cage should be selected in symmetrical positions as much as possible to prevent the steel cage from being in a "non-vertical" state during the lowering process. In this way, one side of the steel cage is aligned, while a large gap will appear on the other side, which is not conducive to docking construction;

[0031] 4. After the lower section of the steel cage is hoisted and placed in place, put the outer sleeve onto the threaded steel bars to be connected;

[0032] 5. Hoist the upper steel cage and align it with the corresponding threaded steel bars of the lower steel cage according to the position marked on the threaded steel bars; after the threaded steel bars are basically aligned, put the inner sleeve on the upper threaded steel bars and fix them;

[0033] 6. Install wedges on the upper and lower steel bars respectively, and tighten the inner and outer sleeves with a movable wrench after installation;

[0034] 7. After connecting each threaded steel bar in turn and tying the stirrups, remove the radial reinforcement bars of the steel cage one by one and lower the steel cage.

[0035] The utility model does not require pre-processing of steel bar threads and other auxiliary extrusion tools, and has the advantages of simple operation, fast connection speed, stable performance, and moderate cost. It is particularly suitable for the simultaneous connection of multiple steel bars in the on-site assembly construction of steel cages, which can effectively improve the on-site construction efficiency of steel cages, reduce labor and crane shift costs, and reduce comprehensive costs. Its stable and reliable connection performance enables the steel cage to carry a large load, which is conducive to eliminating the hidden dangers of steel cage connection construction quality and ensuring the quality of construction projects.

[0036] In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "inside", "outside", "top / bottom" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0037] The above description is only a preferred embodiment of the utility model and does not constitute any form of limitation to the utility model. Any technician familiar with the profession, without departing from the scope of the technical solution of the utility model and based on the technical essence of the utility model, any simple modification, equivalent replacement and improvement made to the above embodiment shall still fall within the scope of protection of the technical solution of the utility model.

Claims

1. A wedge-shaped assembled steel cage connection sleeve, characterized in that: include: A threaded steel bar (1), an inner sleeve (2) and an outer sleeve (3), wherein the inner sleeve (2) is coaxially connected to a butt end of a threaded steel bar (1) to be butted, and the outer sleeve (3) is coaxially connected to another butt end of a threaded steel bar (1) to be butted, and the inner sleeve (2) and the outer sleeve (3) are coaxially arranged opposite to each other, and the inner sleeve (2) is detachably connected to one end of the outer sleeve (3) to achieve butt connection of the butt ends of two threaded steel bars (1); It also includes: a wedge assembly, wherein the wedge assembly is provided in two groups, and the two groups of wedge assemblies are respectively connected in a wedge shape to the inner wall of the inner sleeve (2) and the inner wall of the outer sleeve (3) to compress and fix two threaded steel bars (1) to be butted, and each group of wedge assemblies includes two wedge blocks (4) arranged opposite to each other; The inner sleeve (2) is provided with a first wedge-shaped hole axially extending therethrough. The first wedge-shaped hole is funnel-shaped. The slope portion of the first wedge-shaped hole is wedge-shapedly connected with two oppositely arranged wedge blocks (4). The inner walls of the two oppositely arranged wedge blocks (4) are in tight contact with the outer wall of the threaded steel bar (1) in the inner sleeve (2).

2. A wedge-shaped assembled steel cage connection sleeve according to claim 1, characterized in that: A second wedge-shaped hole is provided on one side of the inner part of the outer sleeve (3), and the second wedge-shaped hole is conical. A mounting circular hole is provided on the other side of the inner part of the outer sleeve (3), and one end of the mounting circular hole is connected to the large end of the second wedge-shaped hole to realize the axial penetration of the outer sleeve (3). Two wedge blocks (4) arranged opposite to each other are wedge-shapedly connected in the second wedge-shaped hole, and the inner walls of the two wedge blocks (4) arranged opposite to each other are in pressing contact with the outer wall of the threaded steel bar (1) in the outer sleeve (3).

3. A wedge-shaped assembled steel cage connection sleeve according to claim 2, characterized in that: The wedge-shaped component is in the shape of a cone, the outer wall diameter of the wedge block (4) on one side close to the butt end of the threaded steel bar (1) is larger than the outer wall diameter of the other side, the inner wall diameters of both ends of the wedge block (4) are the same, the two oppositely arranged wedge blocks (4) in the same wedge-shaped component do not contact each other, and the slope of the outer wall of the wedge block (4) is the same as the slope of the first wedge-shaped hole and the slope of the second wedge-shaped hole.

4. The wedge-shaped assembled steel cage connection sleeve according to claim 1, characterized in that: Also includes: A retaining spring (5) is provided on the outer wall of the large end of the wedge block (4) and an arc-shaped groove is provided. The retaining spring (5) is clamped and fixed in the arc-shaped grooves on the two wedge blocks (4) in the same wedge assembly.

5. The wedge-shaped assembled steel cage connection sleeve according to claim 2, characterized in that: An internal thread groove is provided on the inner wall of the mounting circular hole near the port, and an external thread is provided on the outer wall of the inner sleeve (2). The external thread is threadedly connected to the internal thread groove, and the diameter of the outer wall of the inner sleeve (2) is the same as the diameter of the mounting circular hole.

6. The wedge-shaped assembled steel cage connection sleeve according to claim 1, characterized in that: A threaded structure protrusion is provided on the inner wall of the wedge block (4).

7. The wedge-shaped assembled steel cage connection sleeve according to claim 1, characterized in that: The inner sleeve (2) is provided with a hexagonal groove matched with a movable wrench on the side away from the butt end of the threaded steel bar (1), and the outer sleeve (3) is provided with a wrench groove matched with a movable wrench on the side away from the butt end of the threaded steel bar (1).

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