CN111283594A

CN111283594A - Spanner of fluting round nut

Info

Publication number: CN111283594A
Application number: CN202010128495.1A
Authority: CN
Inventors: 李伟; 吴洪德
Original assignee: Chengxi Shipyard Co Ltd
Current assignee: Chengxi Shipyard Co Ltd
Priority date: 2020-02-28
Filing date: 2020-02-28
Publication date: 2020-06-16

Abstract

The invention relates to the technical field of wrenches, in particular to a wrench of a slotted round nut, which comprises a handle, a barrel and claw blocks, wherein the handle is connected to the outer circle of the barrel, an orifice at one end of an inner hole of the barrel is provided with an inner spigot coaxial with the inner hole of the barrel, an annular ring is formed between the inner spigot and the outer circle of the barrel, four grooves uniformly distributed along the circumferential direction of the annular ring are formed in the end surface of the annular ring, the four grooves are arranged in a penetrating manner along the radial direction, the claw blocks are fixedly arranged in the grooves, and single teeth matched with a groove body of the slotted round nut extend towards one end of the central axis of the inner hole of the barrel. The invention overcomes the defect that the existing crescent spanner is easy to slip when in use, and facilitates the disassembly and the assembly of the slotted round nut.

Description

Spanner of fluting round nut

Technical Field

The invention relates to the technical field of wrenches, in particular to a wrench for a slotted round nut.

Background

The slotted round nut is an axial fastener widely applied to parts such as bearings, couplings, shaft sleeves and the like of various devices. Due to the wide range of use, slotted round nuts have been standardized. Standardized slotted round nuts (GB812-88) are shown in FIG. 5, with outer circle d_kFour evenly distributed grooves are arranged on the base, the width of each groove is n, the depth of each groove is t, and the sizes are standardized in series. Other slotted round nuts also have non-standard dimensions depending on the actual requirements of design and installation.

Among the prior art, a tool for installing or dismantling slotted round nut generally uses crescent spanner, and its problem that exists is: because the groove of the slotted round nut is shallow, the slotted round nut is easy to slip when being disassembled or fastened by using the crescent wrench, and the use requirement of larger torque cannot be met.

Therefore, there is a need to provide a better solution for disassembling and assembling slotted round nuts.

Disclosure of Invention

In order to solve the problems, the invention provides a wrench for a slotted round nut, aiming at overcoming the defect that the existing crescent wrench is easy to slip when in use and facilitating the disassembly and assembly of the slotted round nut. The specific technical scheme is as follows:

the utility model provides a spanner of slotted round nut, includes handle, barrel and claw piece, the handle is connected on the barrel excircle, the drill way of the one end of barrel hole be provided with the coaxial internal front edge of barrel hole, internal front edge with form an annular ring between the barrel excircle seted up the edge on the terminal surface of annular ring four recesses of the circumference equipartition of annular ring, just four recesses radially link up the setting, each all the installation be fixed with in the recess the claw piece, the claw piece extends towards the one end direction of barrel hole the central axis have be used for with the monodentate of the cell body looks adaptation of slotted round nut.

During specific implementation, the wrench is designed and manufactured according to the size of the slotted round nut and the size of the shaft diameter matched with the slotted round nut, so that the inner hole of the barrel body of the wrench can penetrate through the shaft diameter, the outer circle of the slotted round nut and the inner spigot of the barrel body to be matched, and the single teeth on the claw block and the groove of the slotted round nut to be matched. The claw blocks are arranged in the four grooves on the cylinder body and are fastened and connected by hexagon socket head cap screws. When the handle is used, the wrench and the slotted round nut are compact in matching, the torque transmitted by the claw block is large, the handle cannot slip when being knocked to disassemble and assemble the slotted round nut, and the handle is safe and practical.

Preferably, the claw block is matched with two side surfaces of the groove and fixed in the groove through screws.

Preferably, the excircle of barrel includes one section big excircle and one section little excircle of adjacent connection, the tang is located in the one end drill way of the big excircle of barrel, the handle is connected on the little excircle of barrel.

Preferably, a through hole is formed in the bottom of the groove, a screw hole is formed in the claw block, and the screw penetrates through the through hole from the back of the groove and then tightens the claw block in the groove.

Preferably, each claw block is fixed by two screws.

Preferably, the handle is connected with the cylinder in a welding mode.

The invention has the beneficial effects that:

because the design has the interior tang that is used for fixing a position fluting round nut, it cooperates with four claw pieces on the spanner each other, can not skid during the dismouting, and the moment of operation transmission is big, is difficult for haring fluting round nut, convenient to use and safety.

In addition, the size of the claw block can be changed to meet the requirements of assembling and disassembling slotted round nuts with different sizes.

Drawings

FIG. 1 is a schematic structural view of a wrench for a slotted round nut according to the present invention;

FIG. 2 is a right side view of FIG. 1;

FIG. 3 is a left side view of FIG. 1;

FIG. 4 is a schematic view of a wrench for a slotted round nut according to the present invention in use;

fig. 5 is a schematic diagram of a standardized slotted round nut of the prior art.

In the figure: 1. the device comprises a handle, 2, a barrel, 3, a claw block, 4, an outer circle of the barrel, 5, an inner hole of the barrel, 6, an inner spigot, 7, an annular ring, 8, a groove, 9, a slotted round nut, 10, a single tooth, 11, a screw, 12, a large outer circle, 13 and a small outer circle.

Detailed Description

The following description of the embodiments of the present invention will be made with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.

Fig. 1 to 5 show an embodiment of a wrench for a slotted round nut according to the present invention, which includes a handle 1, a cylinder 2, and a jaw 3, wherein the handle 1 is connected to an outer circle 4 of the cylinder, an orifice at one end of an inner hole of the cylinder 2 is provided with an inner spigot 6 coaxial with the inner hole 5 of the cylinder, an annular ring 7 is formed between the inner spigot 6 and the outer circle 4 of the cylinder, four grooves 8 uniformly distributed along a circumferential direction of the annular ring 7 are formed on an end surface of the annular ring 7, the four grooves 8 are arranged in a radially penetrating manner, the jaw 3 is fixedly installed in each groove 8, and a single tooth 10 adapted to a groove body of the slotted round nut 9 extends from the jaw 3 toward one end of a central axis of the inner hole 5 of the cylinder.

During specific implementation, the wrench is designed and manufactured according to the size of the slotted round nut 9 and the size of the shaft diameter matched with the slotted round nut 9, so that the inner hole 5 of the wrench can penetrate through the shaft diameter, the outer circle of the slotted round nut 9 and the inner spigot 6 on the barrel 2 to be matched, and the single tooth 10 on the claw block 3 and the groove of the slotted round nut 9 to be matched. The claw blocks 3 are arranged in the four grooves 8 on the cylinder body 2 and are tightly connected by hexagon socket head cap screws 11. During the use, the spanner is compact with the cooperation of fluting round nut 9, and the moment through the transmission of claw piece 3 is great, can not skid when knocking 1 dismouting fluting round nut 9 of handle, and is safe practical again.

Preferably, the claw block 3 is adapted to both side surfaces of the groove 8 and fixed in the groove 8 by a screw 11.

Preferably, the excircle of barrel 2 includes one section big excircle 12 and one section little excircle 13 of adjacent connection, interior tang 6 is located the one end drill way of the big excircle 12 of barrel, handle 1 is connected on the little excircle 13 of barrel.

Preferably, a through hole is formed in the bottom of the groove 8, a screw hole is formed in the claw block 3, and the screw 11 penetrates through the through hole from the back of the groove 8 and then tightens the claw block 3 in the groove 8.

Preferably, each of the jaw pieces 3 is fixed by two screws 11.

Preferably, the handle 1 is connected with the barrel 2 in a welding mode.

The beneficial effect of this embodiment is:

because the design has the interior tang 6 that is used for fixing a position fluting round nut 9, it cooperates with four claw piece 3 on the spanner each other, can not skid during the dismouting, and the moment of operation transmission is big, is difficult for haring fluting round nut 9, convenient to use is safe again.

In addition, the size of the claw block 3 can be changed to meet the assembly and disassembly requirements of slotted round nuts 9 with different sizes.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the technical principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a spanner of fluting round nut, its characterized in that, includes handle, barrel and claw piece, the handle is connected on the outer circle of barrel, the drill way of the one end of barrel hole be provided with the coaxial internal front edge of barrel hole, internal front edge with form an annular ring between the barrel excircle seted up the edge on the terminal surface of annular ring four recesses of the circumference equipartition of annular ring, just four recesses along radially having a perfect understanding the setting, each all install in the recess and be fixed with the claw piece, the claw piece extends towards the one end direction of barrel hole the central axis and has the monodentate that is used for with the cell body looks adaptation of fluting round nut.

2. The wrench of claim 1, wherein the claw pieces are fitted to both sides of the groove and fixed in the groove by screws.

3. The wrench of claim 1, wherein the outer circumference of the barrel comprises a large outer circumference and a small outer circumference which are adjacently connected, the inner spigot is located at an end opening of the large outer circumference of the barrel, and the handle is connected to the small outer circumference of the barrel.

4. The wrench of claim 2, wherein a through hole is formed at the bottom of the groove, a screw hole is formed on the claw block, and the screw passes through the through hole from the back of the groove to tighten the claw block in the groove.

5. The wrench of claim 4, wherein each of said jaw blocks is fixed by two screws.

6. The wrench of claim 1, wherein said handle is welded to said barrel.