CN205363762U - Fastening nut appurtenance - Google Patents

Abstract

The utility model discloses a fastening nut appurtenance belongs to the hand tool field. The fastening nut appurtenance includes jackscrew and lock silk, and the one end of jackscrew is equipped with the external screw thread, and the lock silk is prismatic tubular structure, and the inner wall of the first end of lock silk is equipped with and treats the internal thread of the bolt looks adaptation at fastening nut place, and the second end opposite with first end of lock silk is equipped with the internal thread with the external screw thread looks adaptation of jackscrew, and the internal thread of first end is opposite with the internal thread screw thread direction of the internal thread of second end. The bolt of the nut to be fastened is connected with the screw thread through the lock wire, the jackscrew is connected with the lock wire through the screw thread, and the jackscrew jacks the bolt, so that the bolt and the fastening nut auxiliary tool form a whole, the fastening nut auxiliary tool is fixed by using tools such as a wrench, the head of the bolt can be prevented from being damaged or the head of the tool clamping bolt such as the wrench can not be conveniently used due to space limitation, and the bolt and the nut rotate together when the nut is detached.

Description

Auxiliary tool for tightening nuts

technical field

The utility model relates to the field of hand tools, in particular to an auxiliary tool for fastening nuts.

Background technique

Bolts and nuts are widely used detachable fasteners for fastening two parts with through holes.

In some places, for example, the bolts and nuts at the pipe joints sometimes need to be disassembled and re-tightened. After repeated disassembly and tightening, the head of the bolt is often damaged, so that the bolt cannot be fixed by a wrench or other tools when re-tightening , When the nut is tightened, the bolt and the nut rotate together, which causes the bolt and the nut to not be tightened smoothly.

Simultaneously in some places, due to space limitation, tools such as wrench cannot be conveniently used to clamp the head of the bolt, so that the bolt and the nut may rotate together when the nut is tightened.

Utility model content

In order to solve the problem that the bolt and the nut rotate together when the nut is tightened, the embodiment of the utility model provides an auxiliary tool for tightening the nut. Described technical scheme is as follows:

The embodiment of the utility model provides an auxiliary tool for tightening nuts. The auxiliary tool for tightening nuts includes a jacking wire and a locking wire. One end of the jacking wire is provided with an external thread, and the locking wire is a prismatic tubular structure. , the inner wall of the first end of the lock wire is provided with an internal thread suitable for the bolt where the nut to be fastened is located, and the second end of the lock wire opposite to the first end is provided with a The external threads of the wire are matched with the internal threads, and the internal threads of the first end and the internal threads of the second end have opposite thread directions.

Optionally, the exterior of the lock wire is a hexagonal prism tubular structure.

Preferably, the minor diameter of the internal thread at the first end is larger than the major diameter of the internal thread at the second end.

Further, the pitch of the internal thread at the second end is smaller than the pitch of the internal thread at the first end.

Further, the jacking screw includes a screw and a head, one end of the screw is fixedly connected to the head, and the external thread of the jacking screw is located on the screw.

Further, the head is a hexagonal prism structure.

Preferably, the length of the screw rod is greater than the length of the locking wire.

Preferably, the lock wire is a No. 45 steel structural member.

Further, the jacking wire is a No. 45 steel structure.

Optionally, the nominal diameter of the internal thread at the first end ranges from 14 mm to 24 mm.

The beneficial effect brought by the technical solution provided by the embodiment of the utility model is that the first end of the lock wire is connected with the thread of the bolt where the nut to be fastened is located, and the top wire is connected with the second end of the lock wire through the thread , Tighten the bolt with the top screw, so that the bolt and the fastening nut auxiliary tool are integrated, use a wrench and other tools to fix the fastening nut auxiliary tool, so as to avoid damage to the head of the bolt or use the wrench and other tools conveniently due to space restrictions When the head of the bolt is gripped, the bolt and the nut rotate together when the nut is tightened.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings that need to be used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some implementations of the present invention. For example, those skilled in the art can also obtain other drawings based on these drawings without creative work.

Fig. 1 is a cross-sectional view of a lock wire provided by an embodiment of the present invention;

Fig. 2 is a schematic structural view of a top wire provided by an embodiment of the present invention.

detailed description

In order to make the purpose, technical solutions and advantages of the present utility model clearer, the implementation of the present utility model will be further described in detail below in conjunction with the accompanying drawings.

The embodiment of the utility model provides an auxiliary tool for tightening nuts. Fig. 1 is a cross-sectional view of a locking wire provided by the embodiment of the present invention, and Fig. 2 is a structural diagram of a jacking wire provided by the embodiment of the present invention. 1 and FIG. 2, the fastening nut auxiliary tool includes a top screw 100 and a lock wire 200, one end of the top screw 100 is provided with an external thread 121, the lock wire 200 is a prismatic tubular structure, and the first end 220 of the lock wire 200 is The inner wall is provided with an internal thread 221 adapted to the bolt where the nut to be fastened is located, and the second end 210 of the locking wire 200 opposite to the first end 220 is provided with an internal thread adapted to the external thread 121 of the jacking screw 100 211 , the internal threads 221 of the first end 220 and the internal threads 211 of the second end 210 have opposite thread directions.

In the embodiment of the utility model, the first end of the lock wire is connected with the thread of the bolt where the nut to be fastened is located, and the top wire is connected with the second end of the lock wire through the thread, and the top wire tightens the bolt so that the bolt and the tightening Fix the nut auxiliary tool as a whole, use a wrench and other tools to fix the fastening nut auxiliary tool, so as to avoid when the head of the bolt is damaged or the head of the bolt is not convenient to use tools such as a wrench to clamp the head of the bolt due to space constraints, when disassembling the nut A situation where the bolt and nut turn together.

In the embodiment shown in FIG. 1 , the lock wire 200 has a hexagonal prism tubular structure on the outside. The shape of the hexagonal prism is convenient for clamping tools such as wrenches, and it can also be designed as other convenient clamping structures.

Preferably, the minor diameter of the internal thread 221 of the first end 220 is greater than the major diameter of the internal thread 211 of the second end 210 , so that the screw 100 can pass through the second end 210 into the first end 220 to tighten the bolt.

Furthermore, the pitch of the internal thread 211 of the second end 210 is smaller than the pitch of the internal thread 221 of the first end 220, so that the connection between the jacking screw 100 and the locking thread 200 is tighter, and the tightening force of the jacking screw 100 on the bolt is increased.

Optionally, as shown in FIG. 2 , the jackscrew 100 includes a screw 120 and a head 110, one end of the screw 120 is fixedly connected to the head 110, and the external thread 121 of the jackscrew 100 is located on the screw 120. Hold the head 110 and twist the top wire 100 .

Furthermore, the head 110 has a hexagonal prism structure, and the shape of the hexagonal prism is convenient for tools such as a wrench to hold, and it can also be designed as other shapes that are convenient for holding.

Further, the length of the screw rod 120 is longer than the length of the lock wire 200, so as to ensure that the screw rod 120 can tighten the bolt even when the length of the bolt is short.

Preferably, the lock wire 200 is a steel structure of No. 45, and No. 45 steel has higher strength and better machinability.

Preferably, the top wire 100 is a No. 45 steel structure, and No. 45 steel has higher strength and better machinability.

Optionally, the nominal diameter of the internal thread 221 of the first end 220 ranges from 14 mm to 24 mm, so as to ensure that the internal thread 221 of the first end 220 can be adapted to the bolt on which the nut is to be fastened, corresponding to bolts of different sizes , the nominal diameters of the internal threads 221 of the first end 220 are also different.

Referring to Fig. 1, the internal thread 221 of the first end 220 is a right-handed internal thread, and the internal thread 211 of the second end 210 is a left-handed internal thread, and the locking wire 200 is respectively connected with the bolt and the jacking screw 100 through reverse threads to prevent Looseness occurs between the locking wire 200 and the bolt and top screw 100 when the nut is tightened.

Correspondingly, for the auxiliary tool used to fasten left-handed threaded bolts and nuts, the internal thread 221 of the first end 220 should be a left-handed internal thread, the internal thread 211 of the second end 210 should be a right-handed internal thread, and the top screw 100 has right-handed external threads adapted to second end 210 .

Below is a brief introduction to the steps of using the fastening nut auxiliary tool provided by the embodiment of the present invention in conjunction with the accompanying drawings:

Step 1: Connect the first end 220 of the locking wire 200 to the bolt where the nut to be tightened is located;

Step 2: screw the screw rod 120 of the jacking screw 100 into the second end 210 of the locking wire 200, use a wrench to clamp the outer structure of the locking wire 200, and use another wrench to twist the head 110 of the jacking screw 100 to push the screw 120 tighten bolts;

Step 3: Hold the head 110 of the top screw 100 with a wrench, and tighten the nut with another wrench;

Step 4: Unscrew the top screw 100. If the top screw 100 is difficult to unscrew, use a wrench to hold the outer structure of the lock wire 200, and another wrench to twist the head 110 of the top screw 100;

Step 5: Unscrew the locking wire 200.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present utility model shall be included in this utility model. within the scope of protection of utility models.

Claims (10)

1. a clamp nut aid, it is characterized in that, described clamp nut aid includes jackscrew and lock silk, one end of described jackscrew is provided with external screw thread, described lock silk is prismatic tubular structure, the inwall of the first end of described lock silk is provided with the female thread suitable with the bolt at nut place to be tightened, second end contrary with described first end of described lock silk is provided with the female thread suitable with the external screw thread of described jackscrew, and the hand of spiral of the female thread of described first end and the female thread of described second end is contrary.

2. clamp nut aid according to claim 1, it is characterised in that described lock silk is the tubular structure of hexagon.

3. clamp nut aid according to claim 1, it is characterised in that the path of the female thread of described first end is more than the big footpath of the female thread of described second end.

4. clamp nut aid according to claim 1, it is characterised in that the pitch of the female thread of described second end is less than the pitch of the female thread of described first end.

5. clamp nut aid according to claim 1, it is characterised in that described jackscrew includes screw rod and head, one end of described screw rod and described head are fixing to be connected, and the external screw thread of described jackscrew is positioned on described screw rod.

6. clamp nut aid according to claim 5, it is characterised in that described head is six prism structures.

7. clamp nut aid according to claim 5, it is characterised in that the length of described screw rod is more than the length of described lock silk.

8. the clamp nut aid according to any one of claim 1-7, it is characterised in that described lock silk is No. 45 steel construction pieces.

9. the clamp nut aid according to any one of claim 1-7, it is characterised in that described jackscrew is No. 45 steel construction pieces.

10. the clamp nut aid according to any one of claim 1-7, it is characterised in that the nominal diameter of the female thread of described first end range for 14mm～24mm.