CN205572274U - Utilize friction breakout tongs of dead point mechanism effect - Google Patents

Abstract

The utility model relates to a friction pipe wrench utilizing a dead point mechanism, comprising an upper rod, a friction pad group, a vertical rod, a pressure plate, an oblique rod, and a bottom rod; Protruding shaft, the protruding shaft is made of rubber. When the friction pad is pressed, it will deform to fill the gap and have a certain pre-tightening force. The friction pad set is engaged with the lower end of the upper rod and the left end of the bottom rod through the convex shaft and teeth. It is connected with the vertical bar on the right side, the right side of the vertical bar is connected to the pressing plate through a hinge, the lower side of the pressing plate is connected to the oblique bar through a hinge, and the two points on the upper side of the bottom bar are respectively connected with the vertical bar and the oblique bar through a hinge. The utility model realizes the requirement of quick clamping and loosening of the pipe wrench through the dead point mechanism, reduces the number of times of tightening and loosening the jaws of the traditional pipe wrench during the twisting process, ensures the clamping of the pipe wrench, and bears relatively high pressure. The diameter of the pipe is designed with different radians of the contact surface with the pipe to ensure the contact area between the friction surface and the pipe, so that the pipe wrench is more labor-saving and has a wider range of use.

Description

A Friction Pipe Wrench Utilizing the Dead Point Mechanism

technical field

The utility model relates to a friction pipe wrench, which belongs to the technical field of pipe tools.

Background technique

Pipe wrench, also known as pipe wrench or pipe wrench, is mainly used to disassemble and install various pipes, pipe connectors and circular workpieces, and is a common tool for repairing and maintaining various pipe fittings. At present, the commonly used pipe wrench is composed of a pipe handle, a pipe tooth, an adjusting wheel, and a movable hook handle. distance, so that the zigzag plane of the pipe tooth is in close contact with the surface of the pipe, and then turn the handle to rotate the pipe. Ordinary pipe wrench often has the phenomenon of slipping between the jaws and the surface of the pipe, and can only be tightened once, and the pipe is rotated at a certain angle. It is necessary to loosen the clamped pipe, then adjust the clamping angle, and then rotate the adjusting wheel to clamp the pipe. This process relies on the screw of the adjusting wheel to transmit power, and the moving speed of the jaw is extremely slow. Repeated debugging is extremely time-consuming. , while increasing the workload of operators.

Utility model content

In view of the above problems, the purpose of this utility model is to overcome the situation that the traditional pipe will not be clamped tightly. It is necessary to continuously tighten and loosen the adjustment wheel to adjust the shortage of the pipe wrench to clamp the pipe. After debugging the clamping device, you can open the clamping, efficient and convenient multi-functional clamping device.

The technical scheme of the utility model is as follows:

A friction pipe wrench utilizing a dead point mechanism, comprising an upper rod, a friction pad set, and a dead point mechanism; the dead point mechanism is composed of a vertical bar, a pressing plate, an inclined bar, and a bottom bar; There is a protruding shaft facing the inside of the upper rod, and the friction gasket group is engaged with the lower end of the upper rod and the left end of the bottom rod through the protruding shaft and teeth. The upper rod is L-shaped and passes through the vertical rod on the right side of the upper rod. Bolt connection, the right side of the vertical bar is connected to the pressure plate through a hinge, the lower side of the pressure plate is connected to the inclined bar through a hinge, the two points on the upper side of the bottom bar are respectively connected to the vertical bar and the inclined bar through hinges, the upper bar friction gasket set and the bottom bar friction gasket The axes of the convex axes in the group are aligned.

Preferably, after the pressing plate is pressed downwards, the contact points between the inclined bar and the bottom bar, the contact points between the inclined bar and the pressing plate, and the contact points between the pressing plate and the vertical bar are on the same straight line under the pressed state, and the dead point lock is performed. At the same time, tighten the nut on the connection between the upper rod and the vertical rod, so that the friction gasket and the pipe are tightly attached and have a certain pre-tightening force.

Preferably, the vertical bar and the upper bar are in a parallel state in a compressed state.

Preferably, the vertical bar, the pressing plate, and the inclined bar are in contact with the bottom bar in pairs, wherein the vertical bar, the pressing plate, and the inclined bar can move within their contact angle range.

Preferably, the contact surface of the friction pad set is provided with a radian, and such a design allows the radian to adapt to the corresponding pipe diameter.

Preferably, the protruding shaft is made of rubber, and when the friction pad is pressed, it will deform to fill the gap and have a certain pre-tightening force.

The beneficial effects of the utility model are:

1. Through the design of hinge connection, the requirement of quick clamping and loosening of the jaws of the pipe wrench can be realized, reducing the steps of manual tightening of the jaws of the traditional pipe wrench, saving time and improving efficiency;

2. Through the setting of the dead point mechanism, the clamping of the pipe wrench can be ensured without manpower for continuous maintenance;

3. According to the diameter of the pipe, the friction gasket set has different radians of the contact surface with the pipe, which ensures the contact area between the friction surface and the pipe, and makes the use of the pipe wrench more labor-saving and wider in use.

Description of drawings

Fig. 1 is a schematic diagram of the internal structure of the utility model;

Fig. 2 is a structural schematic diagram of the friction pad set of the present invention.

Among the figure: 1 is the bottom rod, 2 is the friction gasket group, 3 is the upper rod, 4 is the vertical rod, 5 is the pressure plate, 6 is the inclined rod, 7 is the convex shaft, and 8 is the tooth.

detailed description

The utility model will be further described in detail below in conjunction with the embodiments in the accompanying drawings, but it does not constitute any limitation to the utility model.

As shown in Fig. 1-Fig. 2, a kind of multifunctional clamping device utilizing dead point mechanism, comprises upper rod 3, friction pad group 2, dead point mechanism, and described dead point mechanism is formed by vertical bar 4, pressing plate 5 , inclined bar 6, and bottom bar 1; the friction pad set 2 is provided with a protruding shaft 8 toward the inside of the upper bar 3, and the friction pad set 2 is engaged with the lower end of the upper bar 3 through the protruding shaft 8 and teeth 9 At the left end of the bottom rod 1, the protruding shaft 8 is made of rubber. When the friction pad set 2 is pressed, it will deform to fill the gap, and has a certain pre-tightening force. The contact surface of the friction pad set 2 is provided with a radian. The arc can be adapted to the pipe diameter within the corresponding range; the upper rod 3 is L-shaped, connected with the vertical rod 4 on the right side of the upper rod through bolts, the right side of the vertical rod 4 is connected to the pressure plate 5 through a hinge, and the side below the pressure plate 5 passes through The hinge is connected to the oblique rod 6, and the two points on the upper side of the bottom rod 1 are respectively connected to the vertical rod 4 and the oblique rod 6 through hinges, and the upper rod friction pad set 2 is aligned with the axis of the convex shaft 8 in the bottom rod friction pad set 2, This is to ensure that the bite force of the jaw contact surface is evenly distributed on the pipe. The vertical rods 4 , pressing plates 5 , and oblique rods 6 are in contact with the bottom rod 1 in pairs, wherein the vertical rods 4 , pressing plates 5 , and oblique rods 6 can move within the range of their contact angles.

After the pressing plate 5 is pressed downward, the contact points of the inclined bar 6 and the bottom bar 1, the contact points of the inclined bar 6 and the pressing plate 5, and the contact points of the pressing plate 5 and the vertical bar 4 are on the same straight line under the pressing state, forming a movement Dead point, let pressing plate 5 and oblique rod 6 keep fixed, can't move relative to rotation again, carry out dead point locking. The vertical bar 4 and the upper bar 3 are in a parallel state in a compressed state.

Example:

When using the friction pipe wrench of the present utility model, the pressing plate 5 is pulled up, and at this time, the pressing plate 5 drives the vertical bar 4 to tilt to the right, and the L-shaped upper bar 3 rotates upward accordingly, and the pipe is put into the upper bar 3 and the bottom After the jaws between the bars 1, press down the pressure plate 5, adjust the length of the bolts at the connection between the upper bar 3 and the vertical bar 4, until the friction gasket set 2 between the upper bar 3 and the bottom bar 1 clamps the pipe, At this time, the dead point mechanism is at the dead point of movement, so as to ensure that the friction gasket set 2 will not decrease the clamping force on the pipe due to the different gripping degrees of the friction pipe wrench by the operator during the rotation process. When the pipe rotates to a certain degree If it is necessary to open the pipe wrench and reselect the clamping position to pull up the pressure plate 5, turn the pipe wrench to a suitable position and then press the pressure plate 5 downward.

The above description is only the preferred embodiment of the present utility model. It should be pointed out that the present utility model is not limited to the above-mentioned mode, and can be further improved without departing from the principle of the present utility model. A new type of protection.

Claims (3)

1. A friction pipe wrench utilizing the effect of a dead point mechanism is characterized in that it comprises an upper rod, a friction pad group, and a dead point mechanism; the dead point mechanism is made up of a vertical bar, a pressing plate, an oblique bar, and a bottom bar; The friction pad set is provided with a protruding shaft facing the inside of the upper rod. The friction pad set is engaged with the lower end of the upper rod and the left end of the bottom rod through the protruding shaft and teeth. The upper rod is L-shaped, and the vertical rod on the right The rod bolts are connected, the right side of the vertical rod is connected to the pressure plate through a hinge, the lower side of the pressure plate is connected to the inclined rod through a hinge, the two points on the upper side of the bottom rod are respectively connected to the vertical rod and the diagonal rod through a hinge, and the upper rod friction pad set and the bottom rod friction pad The axis alignment of the cam shafts in the stack. 2. A friction pipe wrench utilizing a dead point mechanism according to claim 1, characterized in that, after the pressing plate is pressed downward, the contact point between the inclined bar and the bottom bar, the contact point between the inclined bar and the pressing plate, and the pressing plate The contact point with the vertical bar is on the same straight line in this compressed state, forming a dead point. 3. A friction pipe wrench utilizing a dead point mechanism according to claim 1, wherein the contact surface of the friction pad set is provided with a radian.