CN204171927U - A kind of adjustable " F " type tap wrench - Google Patents

Abstract

The utility model discloses a kind of adjustable " F " type tap wrench, comprise boosting-rod, described boosting-rod one end is fixed with the axis direction fixing kelly vertical with boosting-rod axis direction, described boosting-rod side is evenly equipped with spacing hole vertically, described boosting-rod is socketed with the sliding sleeve be mated, the movable kelly described sliding sleeve sidewall being respectively equipped with the pin-and-hole corresponding with spacing hole and paralleling with fixing kelly, described sliding sleeve is fixed by the spacer pin and boosting-rod running through pin-and-hole and spacing hole.The utility model have not only laborsaving but also safely, avoid the feature that valve handle is impaired, improve service life of equipment, reduce spare parts cost, can valve technology field be widely used in.

Description

An adjustable "F" type valve wrench

technical field

The utility model relates to the technical field of valves, in particular to an adjustable "F" type valve wrench.

Background technique

Various pipe valves of different sizes are distributed in power supply workshops such as water, steam and compressed air. Due to the frequency of use or materials, some valves with large diameters, such as globe valves, gate valves, or butterfly valves, often suffer from internal corrosion, wear and aging of sealing parts, and increased friction coefficients. If the valve is not tightly closed or fully opened, it cannot be avoided even if the necessary anti-rust and lubricating maintenance are performed on the valve, which will adversely affect the normal supply of steam, water, compressed air and air-conditioning refrigerant water.

In order to solve the problem of difficult valve switch operation, some manufacturers have produced fixed "F" type valve wrenches as auxiliary tools for opening and closing valves. Referring to Figure 1, the fixed "F" type valve wrench is composed of a booster rod 1 and two parallel fixed rods 2. 2 together form a bayonet. It can be seen from the figure that although the fixed "F" type valve wrench provides certain convenience, due to the installation position of the valve and the rotation angle of the hand wheel, the valve wrench is still inconvenient to operate in some cases, that is, when the valve When the size is large, the driving arm of the fixed "F" type valve wrench cannot effectively block the spokes of the handwheel, and can only act on the outer ring of the handwheel, which is laborious and unsafe, and will also damage the handwheel of the valve, resulting in Valve cannot operate.

Utility model content

The purpose of this utility model is to overcome the shortcomings of the above-mentioned background technology and provide an adjustable "F" type valve wrench, which is labor-saving and safe, avoids damage to the valve handwheel, improves the service life of the equipment, and reduces the cost of spare parts. features.

The utility model provides an adjustable "F" type valve wrench, which includes a booster rod. One end of the booster rod is fixed with a fixed clamping rod whose axial direction is perpendicular to the axial direction of the booster rod. One side of the booster rod Limiting holes are uniformly distributed along the axial direction, and a sliding sleeve matching it is sleeved on the booster rod, and pin holes corresponding to the limiting holes and parallel to the fixing rod are respectively provided on the side walls of the sliding sleeve. The movable clamping rod, the sliding sleeve is fixed to the booster rod through the limit pin passing through the pin hole and the limit hole.

In the above technical solution, a handle is fixed at the other end of the reinforcing rod.

In the above technical solution, the handle is connected to the reinforcing rod through threads.

In the above technical solution, the handle and the booster rod are an integrated structure.

In the above technical solution, the axis of the pin hole is perpendicular to the axis of the movable lever.

In the above technical solution, the limit pin is a butterfly limit pin.

The adjustable "F" type valve wrench of the utility model has the following beneficial effects: the adjustable "F" type valve wrench can properly adjust the distance between the wrench's fixed clamping rod and movable clamping rod according to the size of the valve handwheel and the spokes, It can effectively block the spokes of any kind of valve handwheel, which is labor-saving and safe, and at the same time avoids damage to the valve handwheel, improves operating efficiency and equipment service life, and reduces the cost of spare parts.

Description of drawings

Fig. 1 is the structural representation of the fixed "F" type valve wrench of the prior art;

Fig. 2 is a structural schematic diagram of the adjustable "F" type valve wrench of the utility model;

Fig. 3 is a structural exploded schematic view of the adjustable "F" type valve wrench of the present invention;

Fig. 4 is a structural schematic diagram of the utility model when the adjustable "F" type valve wrench opens and closes the large valve handwheel;

Fig. 5 is a structural schematic diagram of the utility model when the adjustable "F" type valve wrench opens and closes the handwheel of the medium-sized valve;

Fig. 6 is a structural schematic diagram of the utility model when the adjustable "F" type valve wrench opens and closes the small valve handwheel;

Fig. 7 is a schematic diagram of force when the fixed "F" type valve wrench and the adjustable "F" type valve wrench open the three-spoke handwheel.

Detailed ways

The utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments, but the embodiments should not be construed as limiting the utility model.

The fixed "F" type valve wrench in the prior art in Fig. 1 has been described in the background art, and will not be repeated here.

Referring to Fig. 2 to Fig. 3, the adjustable "F" type valve wrench of the utility model includes a force bar 1, a fixed bar 2, a sliding sleeve 3, a movable bar 4, a limit pin 5 and a handle 6.

One end of the booster rod 1 is fixed with a fixed clamping rod 2 whose axial direction is perpendicular to the axial direction of the booster rod 1, and the side of the booster rod 1 is evenly distributed with limiting holes 1.1 along the axial direction. Socket has the sliding sleeve 3 that cooperates with it. The side wall of the sliding sleeve 3 is respectively provided with a pin hole 3.1 corresponding to the limit hole 1.1 and a movable lever 4 parallel to the fixed lever 2, and the axis of the pin hole 3.1 is perpendicular to the axis of the movable lever 4 . The sliding sleeve 3 is fixed to the force bar 1 through the limit pin 5 passing through the pin hole 3.1 and the limit hole 1.1. In this embodiment, the limit pin 5 is a butterfly limit pin. The other end of the booster rod 1 is fixed with a handle 6, and the handle 6 and the booster rod 1 are connected by threads. Of course, the handle 6 and the booster rod 1 may also be an integrated structure.

Referring to Fig. 4, when the adjustable "F" type valve wrench of the utility model opens and closes the large valve handwheel 7, adjust the position of the movable lever 4, so that the fixed lever 2 and the movable lever 4 are against the large valve handwheel respectively. The two spokes that are centrally symmetrical on the 7 can open and close the large valve handwheel 7 smoothly, and make the large valve handwheel 7 evenly stressed.

Referring to Fig. 5, when the adjustable "F" type valve wrench of the utility model opens and closes the medium-sized valve handwheel 8, adjust the position of the movable lever 4 so that the fixed lever 2 and the movable lever 4 clamp the middle-sized valve handwheel 8. One spoke can open and close the medium-sized valve hand wheel 8 smoothly.

Referring to Fig. 6, when the adjustable "F" type valve wrench of the utility model opens and closes the small valve handwheel 9, the spokes of the small valve handwheel 9 are inconveniently stuck due to the small size of the small valve handwheel 9, so the position of the movable clamping rod 4 is adjusted, The fixed clamping rod 2 and the movable clamping rod 4 clamp the outer ring of the handwheel 9 of the small valve, so that the handwheel 9 of the small valve can be opened and closed smoothly.

Referring to Fig. 7, taking the three-spoke handwheel 10 as an example, compare the force of the three-spoke handwheel 10 when the fixed "F" type valve wrench and the adjustable "F" type valve wrench open the handwheel, wherein, When using a fixed "F" type valve wrench, the force is N ₁ , and when using an adjustable "F" type valve wrench, the force is N ₂ . It can be seen that since the distance between the two fixed rods of the fixed "F" type valve wrench is fixed, it cannot adapt to the change of the size of the three-spoke handwheel 10, and can only clamp the outer ring of the three-spoke handwheel 10, acting on the three-spoke handwheel 10. The force of the spoke handwheel 10 is close to the center of circle, resulting in a smaller moment arm. When using an adjustable "F" type valve wrench, since the distance between the fixed lever 2 and the movable lever 4 is adjustable, the forces released by the fixed lever 2 and the movable lever 4 can all act on the spokes without having to It acts on the outer ring, and the force has a certain distance from the center of the circle, and the force arm is longer. According to the torque balance formula, it can be seen that the force N ₂ using the adjustable "F" type valve wrench is not only much smaller than the force N ₁ of the fixed "F" type valve wrench, but also because the shear force generated by N ₂ is concentrated on the spoke, it is also The outer ring of the three-spoke handwheel 10 will not be damaged.

Combining the aforementioned practice and the theoretical analysis of this example, it can be concluded that choosing an adjustable "F" type valve wrench will be better than a fixed "F" type valve wrench.

Obviously, those skilled in the art can make various changes and modifications to the utility model without departing from the spirit and scope of the utility model. In this way, if these modifications and variations of the utility model fall within the scope of the claims of the utility model and equivalent technologies thereof, the utility model is also intended to include these modifications and variations.

The content not described in detail in this specification belongs to the prior art known to those skilled in the art.

Claims (6)

1. An adjustable "F" type valve wrench, comprising a booster rod (1), one end of the booster rod (1) is fixed with a fixed clamping rod (2) whose axis direction is perpendicular to the axis direction of the booster rod (1). ), characterized in that: one side of the booster rod (1) is evenly distributed with limited holes (1.1) in the axial direction, and the booster rod (1) is sleeved with a sliding sleeve (3) matching it, so The side wall of the sliding sleeve (3) is respectively provided with a pin hole (3.1) corresponding to the limit hole (1.1) and a movable clamping rod (4) parallel to the fixed clamping rod (2), and the sliding sleeve ( 3) The stop pin (5) passing through the pin hole (3.1) and the stop hole (1.1) is fixed to the booster rod (1). 2. The adjustable "F" type valve wrench according to claim 1, characterized in that: a handle (6) is fixed at the other end of the booster rod (1). 3. The adjustable "F" type valve wrench according to claim 2, characterized in that: the handle (6) is connected to the booster rod (1) through threads. 4. The adjustable "F" type valve wrench according to claim 3, characterized in that: the handle (6) and the booster rod (1) are of an integrated structure. 5. The adjustable "F" type valve wrench according to any one of claims 1 to 4, characterized in that: the axis of the pin hole (3.1) is perpendicular to the axis of the movable lever (4). 6. The adjustable "F" type valve wrench according to any one of claims 1 to 4, characterized in that: the limit pin (5) is a butterfly limit pin.