CN210658341U

CN210658341U - Open type limiting nut

Info

Publication number: CN210658341U
Application number: CN201920548243.7U
Authority: CN
Inventors: 王林; 陶刚; 王军
Original assignee: Jiangsu Green River Environmental Technology Co ltd
Current assignee: Jiangsu Green River Environmental Technology Co ltd
Priority date: 2019-04-22
Filing date: 2019-04-22
Publication date: 2020-06-02
Anticipated expiration: 2029-04-22

Abstract

An opening is formed in the side face of a nut column, and the width of the opening can accommodate the plane with threads cut off from the two opposite side faces of the finish rolling deformed steel column face; and the inner side of the nut is provided with a concave thread matched with the convex thread of the finish-rolled deformed steel bar. The front ends of the two sides of the opening are provided with through holes on the same straight line, and the through holes are inserted into the safety pins. The utility model discloses can guarantee reliably to fix the steel reinforcement cage on the stock through simpler device, when installing a limited nut, the nut inserts and rotates 90 degrees directions after to end and reuse the safety catch to restrict, the atress is reliable, the process of construction is convenient, improve the efficiency of construction greatly, can make things convenient for the stock pile of enlarged footing to become; use the utility model discloses an it is more convenient and reliable to arrange the operation of steel reinforcement cage and direction cap isotructure. The utility model discloses also do benefit to the prestressing force that the stock was applyed to the post-tensioning method, this scheme construction is simple simultaneously. The limiting nut is screwed on the anchor rod and is easy to detach, and applied stress cannot be interfered.

Description

Open type limiting nut

Technical Field

The utility model relates to a cooperation is direct or part of construction usefulness of enlarged footing stock, is spacing to the steel reinforcement cage and to stock (elevation) spacing device when the steel reinforcement cage of enlarged footing stock is spacing and stock applied stress. Further provided is an open limit nut with a shear pin.

Background

CN2017103161244 of the applicant is a variable-diameter reinforcement cage for an anchor rod or a pile foundation and an application, the application of the variable-diameter reinforcement cage is gradually expanded, and the anti-floating tensile anchor rod relates to an application technology for underground engineering, foundation and foundation pit supporting and slope collapse prevention.

The anti-floating tensile anchor rod relates to the problem of deformation of an anchor rod system in the construction and application processes, and needs to overcome elastic deformation of a free section of a rod body and increase anchoring force. The technology of the direct connection or enlarged head anchor rod is a novel underground engineering application technology, and accords with the spirit of energy conservation, emission reduction and green development advocated by the state. Compared with the common traditional process, the method is more economic and environment-friendly in the aspects of solving the problems of basement anti-floating, foundation pit supporting and the like; meanwhile, the method has great advantages in the aspects of construction period, durability and the like. Along with the popularization of the expanded anchor rod technology, more and more projects adopt the expanded anchor rod technology to carry out basement anti-floating, foundation pit supporting and the like. Meanwhile, a large number of engineering practices show that the bearing tension of the finish-rolled anchor rod is far greater than that of a common anchor rod, and an anchor rod pile can be prepared, so that the method is an important direction for improving the expanded anchor rod technology.

If adopt finish rolling screw-thread steel as the stock, in the installation design of anti-floating anchor pole, prior art adopts three-piece structure: the steel bar cage is characterized by comprising a perforated lock anchor bottom plate, a spring and a nut (lock anchor nut), wherein the lock anchor bottom plate in the prior art is arranged inside a steel bar cage of the bottom plate, the spring is arranged below the lock anchor bottom plate, and the lock anchor nut is screwed above the bottom plate; because the stress of the lock anchor bottom plate is only concentrated on one half of the bottom plate steel reinforcement cage in the prior art, the stress condition of the whole bottom plate can be influenced, when the finish-rolled deformed steel bar is used as an anchor rod or a pile, particularly when the diameter-variable steel reinforcement cage is adopted, a limiting device such as a limiting nut is needed to position the diameter-variable steel reinforcement cage on the finish-rolled deformed steel bar which is used as the anchor rod or the pile rod, and then mortar or concrete is poured; in addition, a limiting device in the middle of the rod is also needed when the stress anchor rod is assembled. The device not only requires large stress, especially requires convenient assembly or disassembly, and does not influence the function of the finish rolling deformed steel bar, such as the installation connector of the finish rolling deformed steel bar, and the application of the locking anchor nut of the finish rolling deformed steel bar.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an open limit nut with safety pin is the supporting device of anti superficial resistance to compression straight-through or enlarged footing stock stake, and the cooperation finish rolling screw-thread steel is as stock or stake pole, especially the position of locking reinforcement cage or stock, and the assembly or pull down the convenience do not influence the function of finish rolling screw-thread steel itself, and the engineering is gone up the construction and is portably and raise the efficiency.

The technical scheme of the utility model is that the open type limit nut is characterized in that the side surface of the nut column is provided with an opening, and the width of the opening can accommodate the opposite side surfaces of the fine rolling deformed steel column surface to be provided with a plane for cutting off threads; the inner side of the nut is provided with a concave thread matched with the convex thread of the finish-rolled deformed steel bar; the front ends of the two sides of the opening are provided with through holes on the same straight line, and the through holes are used for inserting the safety pins.

The finish rolling deformed steel bar surface has the nut of non-circumference, the utility model discloses the inboard surface screw thread of nut and the hole phase-match of (high strength) finish rolling deformed steel bar stock screw thread, finish rolling deformed steel bar stock have multiple specification to correspond different pulling forces generally from 22-80 mm.

The finish-rolled deformed steel bar has the following characteristics: the finish-rolled thread of the finish-rolled deformed steel bar is not a full cylindrical surface, but two opposite side surfaces of the cylindrical surface are provided with a plane with threads removed, the measured diameters of the two opposite side surfaces of the cylindrical surface are less than the diameter of the protrusion with the threads by more than 2 mm (the diameters have different specifications and have different differences), and the device can be prepared by utilizing the characteristics.

When the open type limiting nut with the safety pin is installed, when the opposite two side surfaces of the opening of the limiting nut, which accommodate the cylindrical surface of the finish rolling deformed steel bar, are provided with the planes for cutting off the threads, the finish rolling threads are inserted into the limiting nut by the planes, and the rotation is carried out by 90 degrees; the male thread portion of the finish-rolled thread is rotated into the female thread portion of the inner side of the nut, the male thread portion is engaged with the female thread portion, and preferably, through-holes are formed in the same straight line at both front ends of the opening, and through-holes into which the safety pin is inserted are formed. The inserted position of the safety pin is close to or even close to the plane position of the finish rolling deformed steel bar cylindrical surface for thread cutting, so that the loosening of the limiting nut can be caused when the limiting nut rotates (when the plane of the cut thread after 90-degree rotation is consistent with the opening surface of the limiting nut).

The nut is polygonal in shape, particularly a hexagonal nut, and a long handle can be fixed on the side of the nut, so that the force arm can be increased conveniently, and the nut can be operated manually.

The safety pin is U-shaped.

The safety pin or the safety pin is in a structure of two safety pins in a pin shape, the front ends of two sides of the opening are respectively provided with a through hole 3 and a groove on the same straight line, and the groove on the same straight line is a groove in which the safety pin is inserted, which is arranged above or below the through hole, namely the upper end surface or the lower end surface of the through hole. The through hole and the safety pin can be provided with matched withdrawing shapes.

The utility model discloses a construction installation application, when the stock that is used for the finish rolling screw-thread steel is used, the lower extreme at the stock stake is installed to the enlarged footing steel reinforcement cage, and the steel reinforcement cage has a sleeve pipe, the utility model discloses a stop nut dress is in steel reinforcement cage sheathed tube top and below, and stop nut's diameter is greater than the sleeve pipe to inject the position of steel reinforcement cage sleeve pipe at the stock of finish rolling screw-thread steel, the length of the stock of finish rolling screw-thread steel can be connected stock to suitable length through the connector, has constituted the stock stake (if enlarged footing stock stake).

The utility model discloses an another kind of application is, the enlarged footing steel reinforcement cage is installed behind the stock, the enlarged footing steel reinforcement cage release of stock, when pouring concrete or mortar, need lift one section distance with the stock of belted steel reinforcement cage and water the slip casting again, then at well head top installation crossbeam, set up an interval on the crossbeam-can pass the stock but can separate stop nut's external diameter, lift a certain position and install restriction stop nut on the stock, and install the safety catch after rotatory 90 degrees, stop nut's the size that highly is greater than 20mm can, can guarantee that sufficient intensity can.

The steel reinforcement cage fixing device has the advantages that the steel reinforcement cage can be reliably fixed on the anchor rod through a simpler device (when a limiting nut is installed, the nut is rotated in a 90-degree direction after being inserted to the bottom and then limited by the safety pin), the stress is reliable, the construction process is convenient, the construction efficiency is greatly improved, and the pile forming of the anchor rod pile with the enlarged head can be facilitated; use the utility model discloses an it is more convenient and reliable to arrange the operation of steel reinforcement cage and direction cap isotructure. The utility model discloses also do benefit to the prestressing force that the stock was applyed to the post-tensioning method, this scheme construction is simple simultaneously. The limiting nut is screwed on the anchor rod and is easy to detach, and applied stress cannot be interfered.

Drawings

FIG. 1 is a schematic cross-sectional structure of the present invention;

3 FIG. 3 2 3 is 3 a 3 cross 3- 3 sectional 3 view 3 of 3 the 3 A 3- 3 A 3 stop 3 nut 3 of 3 FIG. 31 3 in 3 accordance 3 with 3 the 3 present 3 invention 3; 3

FIG. 3 is a simplified schematic diagram of FIG. 2 according to the present invention;

fig. 4 is a schematic structural view of the nut of fig. 2 with a long handle according to the present invention.

Fig. 5 is a schematic structural view of the safety pin of fig. 2. In fig. 5: fig. 5A is a schematic front view, fig. 5B is a schematic side view of fig. 5A, and fig. 5C is a schematic top view of fig. 5A.

Detailed Description

As shown in the figure, a limit nut 1, finish-rolled deformed steel 6 and a surface 6-1 with threads cut off; 2, finish rolling the deformed steel bar male thread 6-2 and the matched female thread 2; a through hole 3, a groove 4 and a safety pin 5; the inner diameter of the limiting nut is matched with the inner hole of the (high-strength) finish-rolled deformed steel anchor rod thread, and generally, the diameter of the limiting nut is 30-80mm, and various specifications correspond to different pulling forces (which can reach more than 1000 MPa). The shape of the nut is round or polygonal, the limit nut means that the side surface of the nut column is provided with an opening, the width of the opening can accommodate the situation that the two opposite side surfaces of the finish rolling deformed steel bar column surface are provided with a plane with threads removed, and different specifications of the nut can be provided; the inner side of the nut is provided with a concave thread 2 matched with the convex thread of the finish-rolled deformed steel bar; the front ends of the two sides of the opening are provided with through holes 3 which are arranged on the same straight line, and the through holes 3 for inserting the safety pins are arranged. Two through holes may be provided, with two safety pins 5.

Also shown is a separate pin-like safety pin, the second through hole being modified to a slot. The structure of two safety pins in the shape of a pin is convenient to insert and cross. The front ends of the two sides of the opening are respectively provided with a through hole 3 and a groove which are arranged on the same straight line, and the upper part or the lower part of the through hole, namely the upper end surface or the lower end surface of the through hole at the front ends of the two sides of the opening, is provided with a groove for inserting the safety pin. The inner surface thread of the nut is matched with the inner hole of the thread of the (high-strength) finish-rolled deformed steel bar anchor rod, and the finish-rolled deformed steel bar anchor rod generally has various specifications corresponding to different pulling forces from 22 to 80 mm.

When the open type limiting nut with the safety pin is installed, when the opposite two side surfaces of the opening of the limiting nut, which accommodate the cylindrical surface of the finish rolling deformed steel bar, are provided with the planes for cutting off the threads, the finish rolling threads are inserted into the limiting nut by the planes, and the rotation is carried out by 90 degrees; the convex thread part of the finish rolling thread rotates into the concave thread part on the inner side of the nut, the convex thread is meshed with the concave thread, and preferably, through holes which can be inserted by a withdrawing type safety pin are formed in the front ends of the two sides of the opening and are on the same straight line, so that the safety pin is prevented from being disengaged. The position of the safety pin inserted into the nut and the finish rolled steel screw is close to or even clings to the plane position of the finish rolled steel threaded steel cylindrical surface for thread removal, so that the stop nut can be prevented from loosening when the stop nut rotates (when the plane of thread removal after 90-degree rotation is consistent with the opening surface of the stop nut).

The structure of other acicular safety catch can have two round pins to sell into in the marginal hole of nut, has increased intensity, will the utility model discloses the nut closely fixes better at the fixity ability of finish rolling screw-thread steel, can not the slippage.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, which is intended to cover any modifications, equivalents, improvements, etc. made within the spirit and principles of the present invention.

Claims

1. An open type limit nut is characterized in that an opening is formed in the side face of a nut column, and the width of the opening can accommodate the fact that two opposite side faces of a finish rolling deformed steel cylinder face are provided with a plane with threads removed; and the inner side of the nut is provided with a concave thread matched with the convex thread of the finish-rolled deformed steel bar.

2. The open type limit nut as claimed in claim 1, wherein the open side front ends of the opening are provided with through holes on the same straight line, and the through holes are inserted with the safety pins.

3. The open type limit nut as claimed in claim 1, wherein the opening is provided at both side front ends thereof with two through holes in the same line, and a safety pin is inserted into each of the through holes.

4. The open stop nut of claim 1 wherein the position of the shear pin after insertion into the stop nut is a flat position where threads are cut against the cylindrical surface of the finish-rolled deformed steel bar.

5. The open type limit nut as claimed in claim 1, wherein the safety pin has a U-shape or a pin-shaped structure with two safety pins, the front ends of both sides of the opening are provided with a through hole and a groove in the same line, and the groove in the same line is a groove for inserting the safety pin above or below the through hole, i.e. at the upper or lower end surface of the through hole.

6. The open stop nut of claim 1 wherein the nut is circular or polygonal in shape.

7. The open stop nut of claim 1 wherein the nut is flanked by retaining tangs.