A universal remote control device for pneumatic wrench

Abstract

The present invention discloses a universal remote control device for pneumatic wrenches, comprising a trigger control clamp, a wrench clamp, an insulating operating rod, a control handle, an auxiliary handle, a portable air source, an air source pipeline, an air supply pipeline, and a control pipeline. Compared with pneumatic tools generally using a portable air source, an insulating operating rod and a control handle are added, and air volume adjustment and remote trigger control are integrated on the control handle, so that personnel can operate at a safe distance, which increases the safety of operation and improves the practicality of the present invention. The trigger control clamp and the wrench clamp use a clamping structure on the two clamps to clamp the pneumatic wrench, so that it can be compatible with pneumatic wrenches of various sizes, specifications and structures, has greater flexibility, and improves the practicality of the present invention. The auxiliary handle with a bracket interface can achieve stable operation of low-altitude lines without the aid of a ladder through the bracket interface in combination with the insulating operating rod and the ground bracket, thereby improving the practicality of the present invention.

Description

Technical Field

[0001] The invention relates to the field of electric live-operated fastening tools, in particular to a universal remote control device for pneumatic wrenches. Background Art

[0002] Overhead power transmission and distribution lines in power systems often require live operations on hardware fasteners. Electric fastening tools often fail during operation because their weak current control systems are susceptible to strong current interference. Pneumatic wrenches based on purely mechanical control principles have better operational reliability and are gradually being used in live power operations in conjunction with portable air sources.

[0003] However, general pneumatic tools do not have remote control capabilities, so when performing live work, personnel still need to operate close to high potential and wear equipotential equipment or insulating equipment, which increases the difficulty and safety risks of operation. Therefore, pneumatic tools that can be operated at an insulating safety distance will have better convenience and practicality.

[0004] For example, Chinese patent publication number CN2117236U discloses a trigger for disassembling and assembling bolts and nuts, particularly for controlling the tightening force of a bolt pair. The trigger comprises a power source, a rigid body rotating about a fixed axis, and a wrench. The rotating rigid body and the wrench are connected by a time-delayed coupling. The trigger achieves the tightening force of the bolt pair by regulating and controlling the kinetic energy of the rotating rigid body. Because the mechanism or device for determining the kinetic energy of the rotating rigid body is relatively easy to implement, the trigger has good industrial applicability, economic benefits, and social benefits.

[0005] Another example is a Chinese patent with publication number CN105305311A, which discloses a safety protection method for live working on distribution lines, comprising: transporting an insulating carrying tool to the vicinity of a live working distribution line, and insulating and fixing it securely, and adjusting the working height; connecting the live working chair of the insulating carrying tool to one end of an insulating rope, and fixing the other end of the insulating rope to a crossarm insulator; the live working personnel wearing insulating protective gear, carrying insulating operating tools, riding the live working chair, fastening their safety belts, and going to the height of the live working distribution line; when the live working personnel approach the live working distribution line, using insulating shielding tools and isolation tools to shield the wires, forming an insulating protection between the live working personnel and the wires; the live working personnel using insulating operating tools to start working. The present invention uses multiple insulating tools for safety protection, fully cutting off the short-circuit current channel during the live working of the distribution line, and ensuring the safety of the live working personnel.

[0006] For example, Chinese patent publication number CN109473298B discloses an insulated operating rod for live working, comprising a handheld insulated rod, a metal connector connected to the rod, and a protective portion conductively connected to the metal connector to reduce corona discharge. This invention addresses the problem of corona discharge being easily generated and difficult to effectively eliminate when using an insulated operating rod during live working. It provides an insulated operating rod for live working that effectively addresses this issue and can accommodate connectors of varying sizes.

[0007] In summary, there are many drawbacks in the existing design and extended application of pneumatic wrenches, which are summarized as follows:

[0008] ①General pneumatic tools do not have remote control capabilities, so when performing live work, personnel still need to operate close to high potential and wear equipotential equipment or insulating equipment, which increases the difficulty of operation and safety risks;

[0009] ② Existing pneumatic wrenches cannot physically allow operators to operate at an electrically safe distance;

[0010] ③ Pneumatic wrenches cannot avoid the interference, insulation and non-equipotential safety issues caused by the use of electrical signal control. Summary of the Invention

[0011] In view of the deficiencies in the prior art, the present invention provides a universal remote control device for a pneumatic wrench to solve the above problems.

[0012] To achieve the above objectives, the present invention is implemented through the following technical solutions.

[0013] A universal remote control device for pneumatic wrenches includes a trigger control fixture, a wrench fixture, an insulating operating rod, a control handle, an auxiliary handle, a portable air source, an air source pipeline, an air supply pipeline, and a control pipeline. The wrench fixture is mechanically connected to the insulating operating rod, and the control handle and the auxiliary handle are mechanically connected to the insulating operating rod respectively. A trigger control fixture and a wrench fixture are designed, and a clamping structure is used on the two fixtures to clamp the pneumatic wrench, so that it can be compatible with pneumatic wrenches of various sizes, specifications, and structures, has greater flexibility, and improves the practicality of the present invention. Compared with pneumatic tools that generally use a portable air source, an insulating operating rod and a control handle are added, and the air volume adjustment and remote trigger control are integrated on the control handle, so that personnel can operate at a safe distance, which increases the safety of operation and improves the practicality of the present invention.

[0014] Preferably, the trigger control clamp includes a control clamp body, a trigger actuator, and a trigger clamp, wherein the trigger actuator and the trigger clamp are mechanically connected to the control clamp body respectively, and the control clamp body has a circular through hole in the middle, and has trigger clamp threaded holes at three positions of 0 degrees, 180 degrees, and 270 degrees in the top view direction of the control clamp body, and has an actuator threaded hole at the 90 degree position.

[0015] Preferably, the trigger actuator comprises an actuating piston, a push rod and a push head, and the push rod and the push head are mechanically connected.

[0016] Preferably, the trigger holder comprises a trigger holder handle, a trigger clamping head and a trigger friction plate, and the trigger clamping head and the trigger friction plate are mechanically connected.

[0017] Preferably, the wrench fixture comprises a wrench fixture body and a wrench holder, wherein the wrench holder is mechanically connected to the wrench fixture body.

[0018] Preferably, the wrench clamp body has a circular through hole in the middle, and has wrench holder threaded holes at three positions of 0 degrees, 180 degrees, and 270 degrees in the top view direction of the wrench clamp body, and has an insulating operating rod threaded hole at the 90 degree position. The wrench holder includes a wrench holder handle, a wrench clamping head and a wrench friction plate, and the wrench clamping head and the wrench friction plate are mechanically connected.

[0019] Preferably, the insulating operating rod includes an insulating operating rod body and a trigger clamp connecting thread, and the insulating operating rod body is made of epoxy resin.

[0020] Preferably, the control handle includes an air source interface, an air supply interface, a trigger control interface, a control button, an air volume regulator, and a control handle holder.

[0021] Preferably, the auxiliary handle includes an auxiliary handle fixer and a bracket interface. An auxiliary handle with a bracket interface is designed. By combining the bracket interface with the insulating operating rod and the ground bracket, stable operation of the low-altitude line can be achieved without the aid of a ladder, thereby improving the practicality of the present invention.

[0022] Preferably, the portable air source of the universal remote control device for pneumatic wrench is mechanically connected to the air source interface through an air source pipeline, the control handle is mechanically connected to the pneumatic wrench through an air supply pipeline, and the trigger control interface and the trigger actuator are mechanically connected through a control pipeline.

[0023] Compared with the prior art, the present invention discloses a universal remote control device for pneumatic wrenches, comprising a trigger control fixture, a wrench fixture, an insulating operating rod, a control handle, an auxiliary handle, a portable air source, an air source pipeline, an air supply pipeline, and a control pipeline.

[0024] ① Compared with pneumatic tools that generally use portable air sources, the present invention adds an insulated operating rod and a control handle, and integrates air volume adjustment and remote trigger control on the control handle, so that personnel can operate from a safe distance, thereby increasing the safety of operation and improving the practicality of the present invention;

[0025] ② The present invention designs a trigger control fixture and a wrench fixture, and adopts a clamping structure on both fixtures to clamp the pneumatic wrench, thereby being compatible with a variety of pneumatic wrenches of different sizes, specifications and structures, having greater flexibility and improving the practicality of the present invention;

[0026] ③ The present invention is designed with an auxiliary handle having a bracket interface. By combining the bracket interface with the insulating operating rod and the ground bracket, stable operation of low-altitude lines can be achieved without the aid of a ladder, thereby improving the practicality of the present invention.

[0027] ④Avoids interference, insulation and non-equipotential safety issues caused by using electrical signal control. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic structural diagram of the universal remote control device for pneumatic wrenches according to the present invention;

[0029] Figure 2 A schematic structural diagram of a trigger control fixture (1) of a universal remote control device for a pneumatic wrench according to the present invention;

[0030] Figure 3 A schematic structural diagram of a wrench fixture (1) of a universal remote control device for a pneumatic wrench according to the present invention;

[0031] Figure 4 This is a schematic structural diagram of the control fixture body of the universal remote control device for pneumatic wrenches of the present invention;

[0032] Figure 5 This is a schematic structural diagram of the trigger actuator of the universal remote control device for pneumatic wrenches of the present invention;

[0033] Figure 6 This is a schematic structural diagram of the trigger holder of the universal remote control device for pneumatic wrenches according to the present invention;

[0034] Figure 7 This is a schematic structural diagram of a wrench fixture (2) of the universal remote control device for pneumatic wrenches according to the present invention;

[0035] Figure 8 This is a schematic structural diagram of a wrench fixture (2) of the universal remote control device for pneumatic wrenches according to the present invention;

[0036] Figure 9 This is a schematic structural diagram of the wrench clamp body of the universal remote control device for pneumatic wrenches of the present invention;

[0037] Figure 10 This is a schematic structural diagram of a wrench holder of the universal remote control device for pneumatic wrenches according to the present invention;

[0038] Figure 11 This is a schematic structural diagram of the insulating operating rod (3) of the universal remote control device for pneumatic wrenches according to the present invention;

[0039] Figure 12 A schematic diagram of the composition of the control handle (4) of the universal remote control device for pneumatic wrenches according to the present invention;

[0040] Figure 13 A schematic diagram of the composition of the auxiliary handle (5) of the universal remote control device for pneumatic wrenches according to the present invention;

[0041] Figure 14 The installation method for the universal remote control device for pneumatic wrenches of the present invention is for cylindrical shapes;

[0042] Figure 15 The invention discloses a gun-shaped installation method for the universal remote control device for pneumatic wrenches. DETAILED DESCRIPTION

[0043] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0044] A universal remote control device for a pneumatic wrench includes a trigger control fixture 1, a wrench fixture 2, an insulating operating rod 3, a control handle 4, an auxiliary handle 5, a portable air source 6, an air source pipeline 7, an air supply pipeline 8, and a control pipeline 9. The wrench fixture 2 is mechanically connected to the insulating operating rod 3, and the control handle 4 and the auxiliary handle 5 are mechanically connected to the insulating operating rod 3 respectively.

[0045] The trigger control clamp 1 includes a control clamp body 11, a trigger actuator 12, and a trigger clamp 13, wherein the trigger actuator 12 and the trigger clamp 13 are mechanically connected to the control clamp body 11 respectively. There is a circular through hole in the middle of the control clamp body 11, and there are trigger clamp threaded holes 112 at three positions of 0 degrees, 180 degrees, and 270 degrees in the top view direction of the control clamp body 11, and an actuator threaded hole 111 at the 90 degree position. The trigger actuator 12 includes an actuating piston 121, a push rod 122 and a push head 123, and the push rod 122 and the push head 123 are mechanically connected. The trigger clamp 13 includes a trigger clamp handle 131, a trigger clamp head 132 and a trigger friction plate 133, and the trigger clamp head 132 and the trigger friction plate 133 are mechanically connected.

[0046] The wrench fixture 2 includes a wrench fixture body 21 and a wrench holder 22, wherein the wrench holder 22 is mechanically connected to the wrench fixture body 21. A circular through hole is provided in the middle of the wrench fixture body 21, and wrench holder threaded holes 212 are provided at three positions of 0 degrees, 180 degrees, and 270 degrees in the top view direction of the wrench fixture body 21, and an insulating operating rod threaded hole 211 is provided at the 90 degree position. The wrench holder 22 includes a wrench holder handle 221, a wrench clamping head 222, and a wrench friction plate 223, and the wrench clamping head 222 and the wrench friction plate 223 are mechanically connected.

[0047] The insulating operating rod 3 includes an insulating operating rod body 31 and a trigger clamp connecting thread 32. The material of the insulating operating rod body 31 is epoxy resin. The control handle 4 includes an air source interface 41, an air supply interface 42, a trigger control interface 43, a control button 44, an air volume regulator 45, and a control handle fixer 46. The auxiliary handle 5 includes an auxiliary handle fixer 51 and a bracket interface 52.

[0048] The portable air source 6 of the universal remote control device for pneumatic wrench is mechanically connected to the air source interface 41 through the air source pipeline 7, the control handle 4 is mechanically connected to the pneumatic wrench through the air supply pipeline 8, and the trigger control interface 43 and the trigger actuator 12 are mechanically connected through the control pipeline 9.

[0049] Pneumatic wrenches / screwdrivers generally have two types of grips and triggers, one is cylindrical and the other is gun-shaped. For cylindrical wrenches, the installation and matching methods are as follows: Figure 14 As shown, the trigger control fixture 1 is installed at the trigger position, and the wrench fixture 2 is installed in the non-rotating position below the wrench. The longer sides of the trigger control fixture 1 and the wrench fixture 2 are parallel, and the fixation is achieved by the trigger clamp 13 and the wrench clamp 22 respectively. During installation, first loosen the wrench clamp 22 outwards, put the wrench into the opening of the wrench clamp 2 from top to bottom, and then tighten the wrench clamp 22 inwards. Secondly, loosen the trigger clamp 13 outwards, align the trigger actuator 12 of the trigger control fixture 1 with the pneumatic wrench trigger, put the trigger control fixture 1 into the wrench from top to bottom, and tighten the trigger clamp 13 inwards.

[0050] For the gun-shaped wrench, the installation method is as follows Figure 15As shown, the trigger control fixture 1 is installed at the trigger position, and the wrench fixture 2 is installed in the non-rotating position below the wrench. The longer sides of the trigger control fixture 1 and the wrench fixture 2 are perpendicular, and the fixation is achieved by the trigger clamp 13 and the wrench clamp 22 respectively. During installation, first loosen the wrench clamp 22 outwards, put the wrench into the opening of the wrench clamp 2 from top to bottom, and then tighten the wrench clamp 22 inwards. Secondly, loosen the trigger clamp 13 outwards, align the trigger actuator 12 of the trigger control fixture 1 with the pneumatic wrench trigger, put the trigger control fixture 1 into the wrench from top to bottom, and tighten the trigger clamp 13 inwards.

[0051] Control logic of the control handle 4: the driving air source of the pneumatic wrench is connected through the air source interface 41, and is connected to the air supply interface 42 and the trigger control interface 43 through a diverter in the control handle 4. The air supply interface 42 supplies air to the pneumatic wrench, and the air volume regulator 45 is used to adjust the air output of the air supply interface 42. The trigger control interface 43 is connected to the trigger actuator 12. When the control button 44 is pressed, the trigger control interface 43 and the air source are connected, pushing the trigger actuator 12, and the pneumatic wrench is activated. After releasing the control button 44, the trigger control interface 43 and the air source are disconnected, and the pneumatic wrench stops working.

[0052] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, tasks, devices, components and / or combinations thereof.

[0053] It should be noted that the terms "first," "second," and the like in the specification and claims of this application and the accompanying drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein.

[0054] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A universal remote control device for a pneumatic wrench, characterized by: The invention comprises a trigger control fixture (1), a wrench fixture (2), an insulating operating rod (3), a control handle (4), an auxiliary handle (5), a portable gas source (6), a gas source pipeline (7), a gas supply pipeline (8), and a control pipeline (9), wherein the wrench fixture (2) is mechanically connected to the insulating operating rod (3), and the control handle (4) and the auxiliary handle (5) are mechanically connected to the insulating operating rod (3), respectively. The trigger control fixture (1) and the wrench fixture (2) are both of split design.

2. The universal remote control device for pneumatic wrenches according to claim 1, characterized in that: The trigger control clamp (1) comprises a control clamp body (11), a trigger actuator (12), and a trigger clamp (13), wherein the trigger actuator (12) and the trigger clamp (13) are respectively mechanically connected to the control clamp body (11); a circular through hole is provided in the middle of the control clamp body (11); trigger clamp threaded holes (112) are provided at three positions of 0 degrees, 180 degrees, and 270 degrees in the top view direction of the control clamp body (11); and an actuator threaded hole (111) is provided at a 90-degree position.

3. The universal remote control device for pneumatic wrenches according to claim 2, characterized in that: The trigger actuator (12) comprises an actuating piston (121), a push rod (122) and a push head (123), and the push rod (122) and the push head (123) are mechanically connected.

4. The universal remote control device for pneumatic wrenches according to claim 3, characterized in that: The trigger holder (13) comprises a trigger holder handle (131), a trigger holding head (132) and a trigger friction plate (133), and the trigger holding head (132) and the trigger friction plate (133) are mechanically connected.

5. The universal remote control device for pneumatic wrenches according to claim 1, characterized in that: The wrench clamp (2) comprises a wrench clamp body (21) and a wrench clamp (22), wherein the wrench clamp (22) is mechanically connected to the wrench clamp body (21).

6. The universal remote control device for pneumatic wrenches according to claim 5, characterized in that: The wrench clamp body (21) has a circular through hole in the middle, has wrench clamp threaded holes (212) at three positions of 0 degrees, 180 degrees, and 270 degrees in the top view direction of the wrench clamp body (21), and has an insulating operating rod threaded hole (211) at the 90 degree position. The wrench clamp (22) includes a wrench clamp handle (221), a wrench clamp head (222), and a wrench friction plate (223). The wrench clamp head (222) and the wrench friction plate (223) are mechanically connected.

7. The universal remote control device for pneumatic wrenches according to claim 1, characterized in that: The insulating operating rod (3) comprises an insulating operating rod body (31) and a trigger clamp connecting thread (32), and the insulating operating rod body (31) is made of epoxy resin.

8. The universal remote control device for pneumatic wrench according to claim 4, characterized in that: The control handle (4) comprises an air source interface (41), an air supply interface (42), a trigger control interface (43), a control button (44), an air volume regulator (45), and a control handle holder (46).

9. The universal remote control device for pneumatic wrenches according to claim 1, characterized in that: The auxiliary handle (5) comprises an auxiliary handle fixer (51) and a bracket interface (52).

10. The universal remote control device for pneumatic wrench according to claim 8, characterized in that: The portable air source (6) is mechanically connected to the air source interface (41) via an air source pipeline (7), the control handle (4) is mechanically connected to the pneumatic wrench via an air supply pipeline (8), and the trigger control interface (43) is mechanically connected to the trigger actuator (12) via a control pipeline (9).

Images