WO2013007125A1

WO2013007125A1 - Fast removal device for torshear type bolt

Info

Publication number: WO2013007125A1
Application number: PCT/CN2012/075005
Authority: WO
Inventors: 俞敏波; 钱苗; 李国勇
Original assignee: 浙江华电器材检测研究所
Priority date: 2011-07-12
Filing date: 2012-05-03
Publication date: 2013-01-17
Also published as: CN102267119A

Abstract

A fast removal device for a torshear type bolt comprising a front stop piece (4), a bolt removal active bushing (6) and a bolt removal fixed bushing (7), wherein the front stop piece (4) has a central hole (401) matching a torshear type bolt (1), the external surface having an accommodating groove (404), and the periphery of the accommodating groove (404) also having limiting grooves (403); the bolt removal active bushing (6) comprises a round quincuncial socket (601) on the inside, an intermediate cylinder (602), and a quincuncial head (603) on the outside; and the bolt removal fixed bushing (7) has a central hole (701), a socket (702) on the inside, and an equivalent nut (704) on the outside corresponding to the size of a clamping nut (5), the inner diameter of the socket (702) corresponding to the size of the outer diameter of the quincuncial socket (601), and anchors (703) being provided on the socket (702) and corresponding to the shape and number of the limiting grooves (403). The present invention has the advantages of having a simple structure and a high level of interchangeability, and being quick and safe to assemble and suitable for batch production.

Description

Torsional shear bolt quick release device

Technical field

The present invention relates to a power tool auxiliary device, and more particularly to a bolt and nut removal device, in particular

A quick-disconnecting device for torsional shear bolts. The present invention can quickly remove the nut and release the axial force by means of an electric wrench after the torsion shear type bolt is subjected to the tightening axial force test. Background technique

Torsional shear bolts are often used in the joints between steel beams and steel beams, steel beams and steel columns in steel structures. Usually, the head of the torsion-shear type bolt is semi-circular, and the end of the bolt has a plum head.

The torsion-shear type bolt is tightened by the axial force of the tail of the tortoise head during the installation process. Installation book

The procedure is as follows: Pass the end of the bolt through the connected piece, install the washer and nut, and tighten the nut manually. Align the inner sleeve of the torsion wrench with the torsion of the nut and the tail of the screw, and use the torque of the electric wrench to reverse the screw in the reverse direction until the end of the bolt at the end of the bolt is twisted by the torque of the electric wrench.

Since the electric wrench can only apply the torque in the fixed direction, the nut can only be tightened, but the nut cannot be reversed, that is, the nut is removed. Therefore, torsional shear bolts and nuts have been manually removed by manual wrenches. In the case of large-size, high-strength torsion-shear bolts, the tightening torque generated when tightening the nut can reach more than 100Om, so it may be necessary for multiple testers to reverse the nut with a 1.5-meter extension rod manual wrench when disassembling. Torque to remove the nut. This not only greatly reduces the work efficiency, increases the labor intensity, takes up a lot of space, but also brings certain risks to the operation. Therefore, it is very important to seek a scientific, rational and time-saving disassembly method. Summary of the invention

In order to change the condition that the nut is still manually used to manually disassemble the nut, the present invention provides a quick disassembly device for the torsion-shear type bolt which is time-saving, labor-saving, convenient to install, simple in structure and compact in size.

The technical solution adopted to solve the above problems is: a torsion-shear type bolt quick dismounting device, including a front block, a bolt disassembling movable sleeve and a bolt dismounting sleeve, characterized in that the front block has a matching with a torsion-shear type bolt. a central hole, the outer side surface is provided with a receiving groove, and the size of the receiving groove is larger than the tight fit The diagonal dimension of the solid nut, the periphery of the accommodating groove further defines a finite slot; the bolt detaching movable sleeve comprises an inner circular sleeve, an intermediate cylinder and an outer plum head, The size of the plum blossom sleeve and the cylinder is matched with the size of the fastening nut that cooperates with the torsion-cut bolt, which is the same size as the tortoise head of the fitted torsion-type bolt tail; the bolt removal sleeve An inner nut having an inner hole, an inner sleeve and an outer side of an equivalent nut conforming to the size of the fastening nut, the inner diameter of the sleeve being identical to the outer diameter of the torx sleeve, the sleeve being provided with the limit The shape of the groove is the same as the number of feet.

The torsion-shear type bolt quick dismounting device of the invention has the following characteristics:

1) Simple structure and high interchangeability

The bolt quick disassembly device consists of only three parts, and the three parts are independently arranged. When one of the parts is damaged, the part can be made directly faster, without the need to replace the three parts together.

2) Installation is fast, convenient and safe

Simply attach the bolt removal movable sleeve and the nut removal movable sleeve to the nut of the torsion shear bolt in order to complete the installation before disassembly, which not only improves the efficiency, but also makes the operation very simple, convenient and safe.

3) Suitable for mass production

The three components are simple in shape and have low requirements on the processing technology, so they are suitable for mass production.

As a further improvement of the present invention, the accommodating groove of the front block is a circular groove, and the limiting groove is provided on the circumference of the circular groove, and the number is 1-4, preferably 3, and is evenly distributed. .

DRAWINGS

The invention is further improved in the following with reference to the accompanying drawings and embodiments.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a structural schematic view of a torsion-shear type bolt quick dismounting device of the present invention

Figure 2 is a perspective view of the torsion-shear type bolt quick dismounting device of the present invention.

Figure 3 is a schematic view showing the structure of the stopper of the present invention.

Figure 4 is a left side view of Figure 3.

Figure 5 is a right side view of Figure 3.

Figure 6 is a schematic view showing the structure of the bolt removal movable sleeve of the present invention.

Figure 7 is a perspective view of the bolt removal movable sleeve of the present invention.

Figure 8 is a schematic view showing the structure of the bolt detaching and fixing sleeve of the present invention.

Figure 9 is a perspective view of the bolt detaching fixing sleeve of the present invention.

Figure 10 is a schematic view showing the assembly of the entire apparatus of the present invention and a schematic view of the principle for disassembly. detailed description

Referring to Figures 1 and 2, the present invention is applied to the installation and disassembly of a torsion-screw type bolt for torque test. In the figure, the rear stopper 2 and the axial force sensor 3 are components in the torque test device. The torsional shear bolt quick dismounting device of the present invention comprises a front stop 4, a bolt removal movable sleeve 6 and a bolt removal fixing sleeve 7.

Referring to FIG. 3, FIG. 4 and FIG. 5, the front block 4 is a flat cylindrical metal block having a center hole 401 matched with the torsion-type bolt 1 and a circular receiving groove 404 formed on the outer side surface. The accommodating groove 404 has a diameter larger than the diagonal dimension of the fastening nut with which it is fitted. Three limiting slots 403 are evenly spaced on the circumference of the receiving groove 404. The inner side surface 405 of the front stopper 4 is flat and is provided with a pair of pin holes 402 for connection to the axial force sensor 3.

Referring to Figures 6 and 7, the bolt removal movable sleeve 6 includes an inner circular plum sleeve 601, an intermediate cylinder 602 and an outer plum head 603. The size and fit of the plum sleeve 601 and the cylinder 602 are described. The size of the fastening nut 2 is matched, and the size of the toroidal head 603 is the same as the size of the tortelling head of the tail of the torsion-shear type bolt 1 . The plum blossom sleeve 601 can be a hexagonal plum sleeve or an inner 12-point plum sleeve.

8 and 9, the bolt detaching fixing sleeve 7 has a center hole 701, an inner circular sleeve 702 and an outer equivalent nut 704 conforming to the size of the fastening nut 5, the sleeve 702 The inner diameter coincides with the outer diameter of the plum blossom sleeve 601. The outer side of the sleeve 702 is evenly provided with three feet 703 for the purpose of cooperating with the three limiting grooves 403 on the front baffle to restrict the circumferential rotation of the bolt removing and fixing sleeve 7.

Referring to Figure 10, the installation and torque test procedure for the torsion shear bolts are as follows:

1) The front stopper 4 is mounted in a circular groove on the side of the axial force sensor 3, and the side of the front stopper 4 having the circular groove 404 faces outward, and the pin is inserted into the pin hole 402 to position the front stopper 4 on the shaft. Force sensor 3 on.

2) Pass the side of the torsion-type bolt 1 with the torx head through the center hole 401 of the rear block 2, the axial force sensor 3 and the front block 4, and place the spacer 8 on it, tighten it tightly. Solid nut 5.

3) Put the electric wrench on the torsion nut 5 and the torsion-type bolt 1 on the torx head. The torque of the electric wrench will tighten the nut and tighten it in reverse until the end of the torsion-type bolt 1 is electric. The torque of the wrench is twisted in the forward direction.

After the above torque test structure, the disassembly process of the torsion-shear type bolt quick dismounting device of the present invention is as follows:

4) Put the bolt removal movable sleeve 6 on the fastening nut 5, and then put the bolt removal sleeve 7 on the bolt removal movable sleeve 6, and rotate the bolt to remove the fixing sleeve 7 so that the three feet 703 and the front The three limiting slots 403 on the baffle 4 cooperate, as shown in FIGS. 1 and 2. 5) The electric wrench is placed on the equivalent nut 704 of the bolt removal fixing sleeve. The bolt removal fixing sleeve 7 is connected with the front stopper 4 to limit the circumferential rotation. Therefore, the special equivalent nut 704 of the bolt removal fixing sleeve 7 is not Produces a circumferential rotation. The nut head 603 of the end of the nut is removed by the torque of the electric wrench, that is, the tightening nut 5 that drives the torsion-screw type bolt is rotated in the loosening direction to complete the disassembly of the torsion-cut type bolt. The above embodiment is merely a specific description of the installation and disassembly of the present invention applied to the torsion shear type bolt for torque test. The invention can also be applied to a construction site, and only the rear block 2 and the axial force sensor 3 in the torque test device can be replaced with two connected members, such as steel beams and steel beams, or steel beams and steel columns. The process and effect of disassembly are exactly the same.

It is to be understood that the above-described embodiments are merely illustrative of the invention, and are not intended to limit the invention, and any inventions that do not depart from the spirit of the invention are intended to fall within the scope of the invention.

Claims

Claims, a torsion-screw quick-disassembly device, comprising a front stop (4), a bolt removal movable sleeve (6) and a bolt removal fixing sleeve (7), characterized in that the front stop (4) has The torsion-screw type bolt (1) matches the center hole (401), and the outer side surface is provided with a receiving groove (404), and the receiving groove (404) is larger in size than the matching fastening nut (5) The diagonal dimension, the periphery of the accommodating groove (404) further defines a limit groove (403); the bolt detaching movable sleeve (6) includes an inner circular plum sleeve (601), a middle cylinder (602) and the outer plum head (603), the size of the plum sleeve (601) and the cylinder (602) and the size of the fastening nut (2) mated with the torsion-type bolt, the The size of the plum blossom head (603) is the same as the size of the plum blossom head at the end of the torsion-shear type bolt (1); the bolt removal fixing sleeve (7) has a central hole (701), an inner sleeve (702) and an outer side. An equivalent nut (704) conforming to the size of the fastening nut (5), the sleeve (702) Plum consistent with the inner diameter of the sleeve (601) of the outer diameter, the sleeve provided with said stopper groove (702)

(403) Feet of the same shape and number (703).

The torsion-shear type bolt quick dismounting device according to claim 1, characterized in that the receiving groove (404) of the front stopper (4) is a circular groove.

The torsion-shear type bolt quick dismounting device according to claim 2, characterized in that the limiting slot is

(403) is 1-4, and is evenly distributed.

The torsional shear bolt quick dismounting device according to any one of claims 1 to 3, characterized in that the inner side surface (405) of the front stopper (4) is flat and is provided with a pair of pin holes (402). ).