F-shaped wrench

Abstract

The utility model relates to an F-shaped wrench, and belongs to the technical field of wrenches. The F-shaped wrench comprises a main body extending in the front-back direction, a front clamping jaw fixedly arranged on the main body and a rear clamping jaw which is arranged on the main body and is adjustable in position in the extending direction of the main body, and further comprises a side clamping jaw used for being matched with the front clamping jaw for clamping. And the side clamping jaws are adjustably connected to the main body in the vertical front-back direction. A front clamping jaw and a side clamping jaw of the F-shaped wrench are arranged on the two sides of a spoke of a hand wheel, a rear clamping jaw is arranged on the outer side of the hand wheel, then the distance between the side clamping jaw and the front clamping jaw is adjusted to enable the front clamping jaw and the side clamping jaw to clamp the spoke of the hand wheel, then the distance between the rear clamping jaw and the front clamping jaw is adjusted to enable the rear clamping jaw to abut against the hand wheel, and then the opening degree of a valve is adjusted. And personal injury caused by slipping and falling of the F-shaped wrench when the upstream and downstream pressure difference of the valve is large can be effectively avoided.

Description

Technical Field

[0001] The utility model relates to an F-type spanner and belongs to the technical field of spanners. Background Art

[0002] The oil and gas well gathering and transportation equipment contains a large number of valves of different sizes. These valves often need to be adjusted in the production operation process. In order to save manpower, F-type wrenches are often used in the adjustment process. The F-type wrench uses the principle of lever. Under the condition of constant torque, by extending the lever arm, the operator can open the valve with higher pressure or larger volume under the action of less force, smoothly realize the valve opening and closing, and complete the purpose of flow regulation or cutting.

[0003] There are many types of F-type wrenches in the prior art, such as the F wrench with the authorization announcement number CN219819540U and the authorization announcement date October 13, 2023. The F wrench has a support body in the length direction, an outer claw fixedly connected to the front end of the support body, and an inner claw arranged at the rear and slidably connected to the support body. The inner claw slides along the length direction, and the length of the inner claw is greater than the length of the outer claw. It also includes a spring sleeved on the part of the support body located behind the inner claw, one end of the spring is a fixed end, the fixed end is fixed to the support body and its free end is arranged toward the inner claw. In the initial state, the spring is in a natural state and its free end is linked to the inner claw and the inner claw is in contact with the outer claw at this time. When the F wrench is in use, the movable inner claw is placed on the edge of the valve handwheel, and the handle is pushed forward, and the movable inner claw part moves backward and clamps the handwheel. This process does not require manual adjustment, and the movable inner claw part relies on the self-expansion of the spring to achieve the movement and clamping action of the inner claw. However, this F wrench uses two claws to clamp the valve handwheel. When the pressure difference between the upstream and downstream of the valve is too large, the force applied to the F wrench needs to be greatly increased. Once the applied force creates an angle with the handwheel plane, the F wrench is very likely to slip and fall off, causing personal injury. Utility Model Content

[0004] The utility model aims to provide an F-type spanner to solve the problem that the existing F-type spanner is easy to slip and fall off when subjected to a large force.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] An F-type wrench comprises a main body extending in a front-to-back direction, a front clamping jaw fixedly arranged on the main body, and a rear clamping jaw arranged on the main body and adjustable in the extension direction of the main body. The F-type wrench also comprises a side clamping jaw for clamping in cooperation with the front clamping jaw, and the side clamping jaw is adjustably connected to the main body in a vertical front-to-back direction.

[0007] Furthermore, the side claw is connected to the main body via a screw rod passing through the front end of the main body, one end of the screw rod is fixedly connected to the side claw, and the other end is connected to a locking nut for locking the two claws when the front claw and the side claw cooperate to clamp.

[0008] Furthermore, the locking nut is arranged on the screw rod and is threadedly connected with a clamping nut for cooperating with the locking nut to clamp the main body.

[0009] Furthermore, the side clamping jaws and the front clamping jaws are both provided with anti-slip and arc-off grooves, and the anti-slip and arc-off grooves on the two clamping jaws are arranged facing each other.

[0010] Furthermore, the rear clamping claw is provided with an anti-slip arcing groove facing the front clamping claw.

[0011] Furthermore, the main body includes a hollow tube rod with a sliding hole extending in the front-to-back direction at the front end, a lead screw capable of moving in the front-to-back direction is passed through the hollow tube rod, an adjusting nut is provided on the lead screw, and a stopping structure for preventing the adjusting nut from moving in the front-to-back direction when rotating is also provided on the hollow tube rod; the rear claw extends from the sliding hole into the hollow tube rod and is fixedly connected to the lead screw.

[0012] Furthermore, the main body also includes a reinforcement member arranged at the front end of the hollow tube rod, the reinforcement member is provided with a slide groove hole corresponding to the slide hole, and the front claw is fixedly connected to the reinforcement member.

[0013] Furthermore, the stopping structure is a fracture arranged at the rear end of the hollow tube rod, and the hollow tube rod is provided with a connecting piece for connecting two sides of the fracture, and the connecting piece and the edges on both sides of the fracture enclose an adjustment window for exposing the adjusting nut.

[0014] The F-type wrench of the utility model is improved on the existing F-type wrench. Before adjusting the valve opening, the front clamping jaw and the side clamping jaw are placed on both sides of the hand wheel spoke, and the rear clamping jaw is placed on the outside of the hand wheel. Then, the distance between the side clamping jaw and the front clamping jaw is adjusted so that the front clamping jaw and the side clamping jaw clamp the hand wheel spoke, and the distance between the rear clamping jaw and the front clamping jaw is adjusted so that the rear clamping jaw presses the hand wheel tightly. In this way, personal injuries caused by the slipping and falling of the F-type wrench when the pressure difference between the upstream and downstream of the valve is large can be effectively avoided. In addition, since the distance between the front clamping jaw and the side clamping jaw and the distance between the front clamping jaw and the rear clamping jaw can be adjusted, the F-type wrench of the utility model can realize the operation of valve hand wheels of different sizes. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of an F-type wrench according to an embodiment of the utility model;

[0016] Figure 2 A schematic diagram of the use of an F-type wrench according to an embodiment of the utility model;

[0017] Among them, 1-front claw, 2-side claw, 3-rear claw, 4-hollow tube rod, 5-screw, 6-adjusting nut, 7-reinforcement, 8-slide hole, 9-screw, 10-break, 11-connector, 12-locking nut, 13-clamping nut. DETAILED DESCRIPTION

[0018] The technical solution of the utility model is further described below in conjunction with specific implementation methods.

[0019] Example

[0020] The F-type spanner of this embodiment, such as Figure 1 As shown, it includes a main body extending in the front-to-back direction, a front clamping claw 1, a side clamping claw 2 and a rear clamping claw 3, the main body includes a hollow tube rod 4 and a reinforcement member 7 arranged at the front end of the hollow tube rod 4, a lead screw 5 that can move in the front-to-back direction is penetrated in the hollow tube rod 4, an adjusting nut 6 is arranged on the lead screw 5, a sliding hole is opened at the front end of the hollow tube rod 4, a break 10 is arranged at the rear end, a connecting member 11 is arranged on the hollow tube rod 4, both sides of the break 10 of the hollow tube rod 4 are connected by the connecting member 11, the adjusting nut 6 is connected to the lead screw at the break 10, the break 10 constitutes a stopping structure for preventing the adjusting nut from moving in the front-to-back direction when rotating, and the connecting member 6 and the edges on both sides of the break 10 are enclosed to form an adjusting window for exposing the adjusting nut; the front clamping claw 1 is fixedly connected to the reinforcement member 7, and a slide slot hole 8 corresponding to the slide hole is arranged on the reinforcement member 7, and the rear clamping claw 3 extends from the slide slot hole 8 and the slide hole to the hollow tube rod 4 and is fixedly connected to the lead screw 5. In other embodiments, the reinforcement member 7 may be omitted, and the front claw 1 may be directly connected to the outer cylinder 4 .

[0021] The side claw 2 is connected to the main body by a screw rod 9 passing through the front end of the main body. The extension direction of the screw rod 9 is perpendicular to the front and rear direction. The extension direction of the side claw 2 is perpendicular to the extension direction of the screw rod 9. One end of the screw rod 9 is fixedly connected to the side claw 2, and the other end passes through the main body from the bottom of the front claw 1. The screw rod 9 is provided with a clamping nut 13 and a locking nut 12 respectively located on both sides of the main body, wherein the locking nut 12 is arranged at the end of the screw rod 9 away from the side claw 2, and can clamp the two claws when the side claw 2 and the front claw 1 are clamped together. The clamping nut 13 can cooperate with the locking nut to clamp the main body when the two claws are clamped to prevent the side claw from rotating.

[0022] The front clamping jaw 1, the rear clamping jaw 3 and the side clamping jaw 2 are all provided with anti-slip arc-off grooves, the anti-slip arc-off grooves of the side clamping jaw 2 and the front clamping jaw 1 are arranged facing each other, and the anti-slip arc-off groove of the rear clamping jaw 3 is arranged toward the front clamping jaw 1. The anti-slip arc-off grooves are respectively arranged on the front clamping jaw 1, the side clamping jaw 2 and the rear clamping jaw 3 to further enhance the anti-slip effect of the F-type wrench. In other embodiments, the anti-slip arc-off grooves may not be arranged on the front clamping jaw 1, the side clamping jaw 2 and the rear clamping jaw 3, and only the side of the clamping jaw is used to press the wheel spoke or the valve handwheel.

[0023] When the F-type wrench of this embodiment is used to adjust the valve opening, Figure 2 As shown, the front clamping jaw 1 and the side clamping jaw 2 are placed on both sides of the spoke on the valve handwheel, and the rear clamping jaw 3 is placed on the outside of the handwheel. The distance between the front clamping jaw 1 and the side clamping jaw 2 is adjusted by adjusting the locking nut 12 on the screw 9, and then the two clamping jaws are locked, so that the front clamping jaw 1 and the side clamping jaw 2 hold the spoke on the valve handwheel tightly, and then the clamping nut 13 and the locking nut 12 are adjusted to clamp the main body, and then the distance between the screw 5 is adjusted by adjusting the nut 6, and then the distance between the rear clamping jaw 3 and the front clamping jaw 1 is adjusted, so that the rear clamping jaw 3 is clamped on the outer circle of the handwheel, and then the valve opening is adjusted using an F-type wrench. Because the front clamping jaw 1 and the side clamping jaw 2 have already held the spoke on the valve handwheel before adjusting the valve opening, it can avoid the F-type wrench from slipping and falling off due to the rapid reduction of the applied force after the valve is opened, thereby avoiding personal injury. Since the distances between the side clamping jaw 2 and the rear clamping jaw 3 and the front clamping jaw 1 in the F-type wrench of this embodiment are adjustable, the F-type wrench is suitable for valves of different models and pressure difference levels.

Claims

1. An F-type wrench, comprising a main body extending in the front-to-back direction, a front clamping jaw fixedly arranged on the main body, and a rear clamping jaw arranged on the main body and adjustable in position in the extending direction of the main body, characterized in that: The F-type wrench also includes a side clamping jaw for cooperating with the front clamping jaw for clamping, and the side clamping jaw is adjustably connected to the main body in a vertical front-to-back direction.

2. The F-type wrench according to claim 1, characterized in that: The side clamping claw is connected to the main body by a screw rod passing through the front end of the main body. One end of the screw rod is fixedly connected to the side clamping claw, and the other end is connected to a locking nut for locking the two clamping claws when the front clamping claw and the side clamping claw cooperate to clamp.

3. The F-type wrench according to claim 2, characterized in that: The locking nut is arranged on the screw rod and is also threadedly connected with a clamping nut for cooperating with the locking nut to clamp the main body.

4. The F-type wrench according to any one of claims 1 to 3, characterized in that: The side clamping claws and the front clamping claws are both provided with anti-slip arc-off grooves, and the anti-slip arc-off grooves on the two clamping claws are arranged facing each other.

5. The F-type wrench according to any one of claims 1 to 3, characterized in that: The rear clamping claw is provided with an anti-slip arcing groove facing the front clamping claw.

6. The F-type wrench according to any one of claims 1 to 3, characterized in that: The main body includes a hollow tube rod with a sliding hole extending in the front-to-back direction at the front end, a lead screw capable of moving in the front-to-back direction is passed through the hollow tube rod, an adjusting nut is provided on the lead screw, and a stopping structure for preventing the adjusting nut from moving in the front-to-back direction when rotating is also provided on the hollow tube rod; the rear claw extends from the sliding hole into the hollow tube rod and is fixedly connected to the lead screw.

7. The F-type wrench according to claim 6, characterized in that: The main body also includes a reinforcing member arranged at the front end of the hollow tube rod, the reinforcing member is provided with a sliding slot hole corresponding to the sliding hole, and the front clamping claw is fixedly connected to the reinforcing member.

8. The F-type wrench according to claim 6, characterized in that: The stopping structure is a fracture arranged at the rear end of the hollow tube rod. The hollow tube rod is provided with a connecting piece for connecting the two sides of the fracture. The connecting piece and the edges on both sides of the fracture form an adjustment window for exposing the adjustment nut.

Images