CN111824993A

CN111824993A - Pneumatic winch anti-misoperation starting device and operation method

Info

Publication number: CN111824993A
Application number: CN201910307728.1A
Authority: CN
Inventors: 李元化; 孙德宇; 董维哲; 谷万斌; 胡毅; 王继征
Original assignee: Sinopec Oilfield Service Corp; Sinopec Zhongyuan Petroleum Engineering Co Ltd; No 3 Drilling Co of Sinopec Zhongyuan Petroleum Engineering Co Ltd
Current assignee: Sinopec Oilfield Service Corp; Sinopec Zhongyuan Petroleum Engineering Co Ltd; No 3 Drilling Co of Sinopec Zhongyuan Petroleum Engineering Co Ltd
Priority date: 2019-04-16
Filing date: 2019-04-16
Publication date: 2020-10-27
Anticipated expiration: 2039-04-16
Also published as: CN111824993B

Abstract

The invention discloses a false start prevention device of a pneumatic small winch and an operation method applying the same.A wrong behavior that an operator can operate the pneumatic small winch at any standing position is effectively avoided by skillful design and application of a button valve sheath, and the operation behavior of the operator is standardized; through the hidden installation of the pedal button valve and the linkage design of the pedal button valve and the pneumatic winch air motor handle, the false start of the pneumatic winch is effectively avoided; through the improved design of the brake band cylinder and the pneumatic brake band and the pneumatic interlocking design of the brake band cylinder and the pneumatic motor, the purposes that the pneumatic winch air motor is pneumatic and the pneumatic brake band is released to brake, and the pneumatic winch air motor is non-pneumatic and the pneumatic brake band is immediately braked are realized, and the use safety of the pneumatic winch is effectively guaranteed.

Description

Pneumatic winch anti-misoperation starting device and operation method

Technical Field

The invention relates to the technical field of drill floor equipment for an oil drilling machine, in particular to a pneumatic small winch anti-misoperation starting device. Also relates to a method for applying the device.

Background

The pneumatic winch uses compressed air as a power source to lift heavy objects, is clean, environment-friendly and high in economical efficiency, and is widely applied to oil rig platforms. When the winch is used, an operator pushes or pulls the air inlet channel handle of the air motor forwards, the air motor rotates, the winch drum rotates to wind or loosen the steel wire rope, and a heavy object is lifted or lowered. The handle is arranged at the middle position, the air motor does not stop air, and the hand brake and the foot brake are used for braking the roller to ensure that the heavy object is stopped at any position.

However, during use, it often happens that: firstly, an operator leaves the operation position of the pneumatic winch for a short time, and a hand brake or a foot brake cannot be used, so that heavy objects fall unrestrained to hurt the operator; secondly, due to negligence of operators, when the pneumatic winch is not used, the air inlet pipeline gate is not closed, when other works are carried out, the phenomenon that the handle is pulled by mistake or other objects are hung on the handle is easy to happen, so that the winch is started by mistake, and accidents of hurting people such as top up, down smashing, hand squeezing and the like occur; and thirdly, due to the structural design and the field installation position of the pneumatic small winch, an operator can operate the pneumatic small winch without standing according to the regulation of operation rules, and the potential safety hazard is great. Although the field is also reformed, for example, a protective cover is arranged on the handle, the operation personnel still can not realize the timely braking when leaving, and the field use is very inconvenient, and the existing problems are not solved fundamentally.

In summary, how to effectively solve the potential safety hazard in the use process of the pneumatic small winch under the condition of not changing the overall structure and the basic functions of the pneumatic small winch becomes a problem to be solved by the technical personnel in the field.

Disclosure of Invention

In view of this, the invention provides an anti-false start device for a pneumatic winch, which effectively avoids false start of the pneumatic winch through linkage design and application of a pedal button valve and an air motor handle of the pneumatic winch.

In order to achieve the purpose, the invention provides the following technical scheme:

a pneumatic winch false start prevention device comprises: the air source box, the foot-operated button valve and the first air relay;

the air source air inlet joint of the air source box is used for connecting an air supply gate of an air bottle of the machine room;

a pedal air inlet of the pedal button valve is connected to a first exhaust joint of the air source box, and a pedal air outlet of the pedal button valve is connected to a first control air port of the first air relay; the pedal button valve is of a normally closed type, and the pedal air inlet is not communicated with the pedal air outlet; the pedal button valve is switched from a closed state to an open state when being stepped, and the pedal air inlet is communicated with the pedal air outlet;

a first air inlet of the first air relay is connected to a second exhaust joint of the air source box, and a first working air port of the first air relay is used for connecting a starting air inlet joint of the pneumatic winch; the first air relay is of a normally closed type, and the first air inlet is not communicated with the first working air port; the first gas relay is switched from a closed state to an open state when the first control gas port is filled with control gas, and the first gas inlet is communicated with the first working gas port.

Preferably, the air purifier further comprises a three-ventilation joint and a second air relay;

the flow dividing air inlet of the three-way air connector is connected with the pedal air outlet of the pedal button valve, the first flow dividing air outlet of the three-way air connector is connected with the first control air port of the first air relay, and the second flow dividing air outlet of the three-way air connector is connected with the second control air port of the second air relay;

a second air inlet of the second air relay is connected to a third exhaust joint of the air source box, and a second working air port of the second air relay is used for connecting an air brake air inlet joint of a brake system of the pneumatic winch; the second air relay is of a normally open type, and the second air inlet is communicated with the second working air port; the second air relay is switched from an open state to a closed state when the second control air port is communicated with control air, and the second air inlet is not communicated with the second working air port.

Preferably, the present solution further provides:

under the condition of no control gas, the second inner valve assembly of the second gas relay is positioned at the initial position and blocks the second gas outlet, and the second gas inlet is communicated with the second working gas outlet;

and under the condition of introducing control gas, the second inner valve assembly is pushed by the control gas to move to a control position and block the second gas inlet, and the second working gas port is communicated with the second gas outlet.

Preferably, the quick release valve further comprises a quick release valve, a quick air inlet of the quick release valve is connected to a pedal air outlet of the pedal button valve, and a quick working air port of the quick release valve is connected to a flow dividing air inlet of the three-way air joint; the quick release valve comprises a valve shell and a valve core with an opening; the valve core can reciprocate along the inner wall of the valve shell under the action of control gas;

under the condition that the quick air inlet supplies control air, the valve core blocks the exhaust hole of the valve shell;

and under the condition that the quick working air port supplies control air, the valve core resets to enable the exhaust hole of the valve shell to be communicated with the quick working air port.

Preferably, the braking system further comprises an air brake mechanism; the air brake mechanism includes:

the brake band cylinder is arranged on the base support of the pneumatic small winch;

the pneumatic belt brake is arranged on a roller of the pneumatic winch and is in stretching fit with the belt brake cylinder.

Preferably, the present solution further provides:

under the condition of no control gas, the first inner valve assembly of the first gas relay is located at an initial position and blocks the first gas inlet, and the first working gas inlet is communicated with the first gas outlet;

under the condition of introducing control gas, the first inner valve assembly is pushed by the control gas to move to a control position and block the first exhaust port, and the first gas inlet is communicated with the first working gas port).

Preferably, the device also comprises a device box; the device box comprises a box body and an upper cover, wherein the box body is in turnover fit with the upper cover;

the air source box, the pedal button valve, the quick release valve, the three-way air connector, the first air relay and the second air relay are all arranged in the box body.

Preferably, the upper cover is provided with a through hole for placing a button of the foot-operated button valve, a button valve sheath corresponding to the position of the button is arranged on the periphery of the through hole, and the button valve sheath is in a toe cap shape.

A method of operating a pneumatic drawworks, employing the apparatus as described above, comprising:

step S1, pressing down a button of the foot-operated button valve, and simultaneously operating an air motor handle;

and step S2, finishing the operation of the air motor handle and releasing the button of the foot button valve.

According to the technical scheme, the anti-misoperation starting device for the pneumatic small winch and the method for applying the device, provided by the invention, effectively avoid the misoperation that an operator can operate the pneumatic small winch at any standing position through the ingenious design and application of the button valve sheath, and standardize the operation behavior of the operator; through the hidden design installation of the pedal button valve and the linkage design application of the pedal button valve and the pneumatic winch air motor handle, the false start of the pneumatic winch is effectively avoided; through the improved design of the belt braking cylinder and the pneumatic braking belt and the pneumatic interlocking design application of the belt braking cylinder and the pneumatic motor, the purpose that the pneumatic belt is released to brake when the pneumatic winch pneumatic motor rotates pneumatically, and the pneumatic winch pneumatic motor can brake immediately when the pneumatic winch pneumatic motor does not rotate pneumatically, is achieved, and the use safety of the pneumatic winch is effectively guaranteed.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a general assembly of an anti-false start device of a pneumatic winch according to an embodiment of the present invention;

fig. 2 is a schematic connection diagram of pneumatic control elements of an anti-false start device of a pneumatic winch according to an embodiment of the present invention;

fig. 3 is a schematic pneumatic control flow chart of a method for using the pneumatic winch false start prevention device according to the embodiment of the present invention without the operation device box 1;

fig. 4 is a schematic view of a pneumatic flow process when a press foot is pressed on a button valve, according to an embodiment of the present invention, in a method for using a pneumatic winch false start prevention device;

fig. 5 is a schematic view of a pneumatic flow process when a button valve is reset according to an embodiment of the invention, in which the pneumatic winch false start prevention device is applied;

the device comprises a device box 1, a box body 1a, an upper cover 1b, a starting air supply joint 1c, a braking air supply joint 1d, a hinge 1e and a handle 1f, wherein the device box is provided with a box body and a box body;

2 is an air source box, 2a is an air source air inlet joint, 2d is a first exhaust joint, 2b is a second exhaust joint, and 2c is a third exhaust joint;

3 is a pedal button valve, 3a is a pedal air inlet, 3b is a pedal air outlet, 3c is a pedal air outlet, 3d is a valve body, and 3e is a button;

4 is a quick air release valve, 4a is a quick air inlet, 4b is a quick working air port, and 4c is a valve core;

5 is a three-way air joint, 5a is a shunt air inlet, 5b is a first shunt air outlet, and 5c is a second shunt air outlet;

6a is a first air relay, 6a1 is a first exhaust port, 6a2 is a first working air port, 6a3 is a first control air port, 6a4 is a first air inlet, 6b is a second air relay, 6b1 is a second air inlet, 6b2 is a second working air port, 6b3 is a second control air port, and 6b4 is a second exhaust port;

7 is pedal button valve sheath, 8 is the brake band cylinder, 8a is the air brake air connector, 9 is the air brake band, 10 is the pneumatic motor handle, 11 is the air motor, 11a is the air motor air connector, 12 is the winch base support, 13 is the hand brake band, 14 is the hand brake handle, 15 is the winch cylinder, 16 is computer lab gas cylinder air feed gate.

Detailed Description

The invention discloses a device for preventing false start of a pneumatic small winch, which can not operate the pneumatic small winch when an operator does not stand at a specified standard standing position; when the operator leaves the pneumatic winch, the air inlet of the pneumatic winch is automatically cut off, and the roller of the pneumatic winch is automatically braked.

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The embodiment of the invention provides a pneumatic winch false start prevention device, which comprises: a gas source box 2, a foot operated button valve 3 and a first air relay 6a, the structure of which can be seen in fig. 1 and 2;

the air source air inlet joint 2a of the air source box 2 is used for connecting an air supply gate 16 of an air bottle of a machine room;

the pedal air inlet 3a of the pedal button valve 3 is connected to the first exhaust joint 2d of the air source box 2, and the pedal air outlet 3b of the pedal button valve 3 is connected to the first control air inlet 6a3 of the first air relay 6 a; the pedal button valve 3 is of a normally closed type, and the pedal air inlet 3a is not communicated with the pedal air outlet 3 b; the pedal button valve 3 is switched from a closed state to an open state when being stepped, and the pedal air inlet 3a is communicated with the pedal air outlet 3 b;

the first air inlet 6a4 of the first air relay 6a is connected to the second air exhaust joint 2b of the air source box 2, and the first working air port 6a2 of the first air relay 6a is used for connecting the starting air inlet joint 11a of the pneumatic winch; the first air relay 6a is of a normally closed type, and the first air inlet 6a4 is not communicated with the first working air inlet 6a 2; the first air relay 6a is switched from a closed state to an open state when the first control air port 6a3 is filled with control air, and the first air inlet 6a4 is communicated with the first working air port 6a 2.

It can be seen from the above technical solutions that, in the pneumatic winch anti-false-start device provided in the embodiments of the present invention, the pedal button valve is in a closed state when not being stepped on, and thus cannot provide control gas for the first gas relay, and thus the passage of the first gas relay is blocked, so that gas cannot be supplied to the pneumatic winch, and the pneumatic winch cannot be started by any way of operating the handle of the pneumatic motor. Of course, simply depressing the foot operated push button valve switches the first relay into the passage to supply air to the air motor, which in turn operates the air motor handle to trigger the actuation of the air winch. The pneumatic winch is triggered to start through the linkage design of the pedal button valve and the pneumatic motor handle of the pneumatic winch, so that the false start of the pneumatic winch is effectively avoided.

Preferably, the gas-water separator further comprises a three-way gas joint 5 and a second gas relay 6b, and the structure of the gas-water separator can be shown in fig. 2 to 5;

the flow dividing air inlet 5a of the three-way air joint 5 is connected to the pedal air outlet 3b of the pedal button valve 3, the first flow dividing air outlet 5b of the three-way air joint 5 is connected to the first control air port 6a3 of the first air relay 6a, and the second flow dividing air outlet 5c is connected to the second control air port 6b3 of the second air relay 6b, so that the pedal button valve 3 respectively provides control air for the first air relay 6a and the second air relay 6b, and the on-off of the first air relay 6a and the second air relay 6b is controlled by pressing and releasing the pedal button valve 3;

the second air inlet 6b1 of the second air relay 6b is connected to the third air outlet joint 2c of the air source box 2, and the second working air port 6b2 of the second air relay 6b is used for connecting an air brake air inlet joint 8a of a braking system of the pneumatic winch;

when the second control air port 6b3 is not filled with control air, that is, when the foot-operated button valve 3 is not stepped on, the second air relay 6b is in a normally open type, and the second air inlet 6b1 is communicated with the second working air port 6b2, so as to realize braking when the pneumatic winch is not operated;

when the foot button valve 3 is pressed, the second control air port 6b3 is filled with control air to trigger the second air relay 6b to switch from the open state to the closed state, and the second air inlet 6b1 is not communicated with the second working air port 6b 2. Meanwhile, control gas is introduced into the first control gas port 6a3 to trigger the first gas relay 6a to be switched from a closed state to an open state, the first gas inlet 6a4 is communicated with the first working gas port 6a2, the purposes that the pneumatic winch gas motor 11 is charged with gas, the pneumatic brake belt 9 is released to brake, the pneumatic winch gas motor 11 is not charged with gas, and the pneumatic brake belt 9 brakes immediately are guaranteed, and the use safety of the pneumatic winch is powerfully guaranteed.

In this embodiment, the method further includes:

under the condition that no control gas exists, the structure of the pneumatic winch can be as shown in fig. 3, the second internal valve assembly of the second air relay 6b is located at the initial position, the second exhaust port 6b4 is blocked, and the second air inlet 6b1 is communicated with the second working air port 6b2, so that the normally open state of the second air relay 6b is realized, the pneumatic winch is ensured to be in the braking state when not in use, and the false start of the pneumatic winch is effectively prevented.

Under the condition of introducing control gas, the structure of the second internal valve assembly can be as shown in fig. 4, the second internal valve assembly is pushed by the control gas to move to a control position and block the second gas inlet 6b1, so that the pneumatic control interlocking design of a brake system and a gas motor is realized, the brake and the start are not influenced mutually, and the coordination work is ensured; and the second working air port 6b2 is communicated with the second air outlet 6b4, so that residual air in the braking system can be discharged through the second air outlet 6b4, and the braking system can be released.

Specifically, the present embodiment further includes a quick release valve 4, a quick air inlet 4a of the quick release valve 4 is connected to the pedal air outlet 3b of the pedal button valve 3, and a quick working air inlet 4b of the quick release valve 4 is connected to the split air inlet 5a of the three-way air joint 5; the quick release valve 4 comprises a valve shell and an open-hole valve core 4 c; the valve core 4c can reciprocate along the inner wall of the valve shell under the action of control gas;

in the case where the quick intake port 4a supplies control gas, the structure thereof may be as shown in fig. 4, and the valve core 4c blocks the exhaust hole of the valve housing; the control gas flows to the three-way air connector 5 through the open hole of the valve core 4c, the open hole of the valve core 4c is a small flow passage hole and is used for adjusting the air pressure of the control gas so as to ensure that the air pressure of the control gas port flowing into the air relay from the gas outlet of the three-way air connector 5 is greater than the compressed air of the gas inlet of the air relay, and ensure that the inner valve assembly can move to a control position.

In the case where the quick operation gas port 4b supplies the control gas, the structure thereof can be seen with reference to fig. 5, and the valve element 4c is reset so that the exhaust hole of the valve housing communicates with the quick operation gas port 4 b. When the pedal button valve 3 is closed, the control gas at the downstream flows back to the quick release valve 4 and is quickly discharged through the exhaust hole of the quick release valve 4, so that the synchronous switching efficiency of the first air relay 6a and the second air relay is improved, and the purpose of stopping the roller of the pneumatic winch while cutting off the air supply of the pneumatic winch is achieved.

In order to further optimize the technical scheme, the brake system further comprises an air brake mechanism; the air brake mechanism includes: the structure of which can be seen in figure 1;

the belt braking air cylinder 8 is arranged on the pneumatic winch base support 12, and an air braking air inlet connector 8a of the belt braking air cylinder 8 is connected to a second working air port 6b2 of the second air relay 6 b;

and the pneumatic brake belt 9 is arranged on a roller 15 of the pneumatic winch and is in stretching fit with the brake belt cylinder 8. One end of the pneumatic brake band 9 is arranged on the base support 12 of the pneumatic small winch, the other end of the pneumatic brake band is connected together through a connecting mechanism, the pneumatic brake band is tightly wrapped on a brake drum at the right end of the pneumatic small winch roller 15, and a piston rod of the brake band cylinder 8 is connected with the connecting mechanism of the pneumatic brake band 9. When the pneumatic winch is not used, namely the pedal button valve 3 is not stepped on, the second air relay 6b is in an open state, and then air can be supplied to a brake band cylinder 8 in the air brake mechanism, so that the brake band cylinder 8 extends out of a piston rod to tighten a pneumatic brake band 9, and automatic braking is realized. The pneumatic brake mechanism is composed of a brake band cylinder 8 and a pneumatic brake band 9, and has the advantages of being large in brake force and stable in braking.

In this embodiment, the method further includes:

under the condition that no control air is available, the structure of the first air relay is as shown in fig. 3, the first internal valve assembly of the first air relay 6a is located at the initial position and blocks the first air inlet 6a4, so that the normally closed state of the first air relay 6a is realized, the pneumatic winch cannot be started no matter how the air motor handle is operated when the foot button valve 3 is not stepped on, and the false start of the pneumatic winch is effectively prevented. In addition, the first working air port 6a2 is communicated with the first exhaust port 6a1 for exhausting residual air in the air motor.

In the case of control air, the structure of the first internal valve assembly can be as shown in fig. 4, the first internal valve assembly is pushed by the control air to move to the control position and block the first exhaust port 6a1, and the first air inlet 6a4 is communicated with the first working air port 6a2 to realize that the first air relay 6a is switched from the closed state to the open state, so as to supply air to the pneumatic winch, and ensure that the pneumatic winch can be started only when the foot button valve 3 is pressed by cooperating with the operating air motor handle.

Specifically, the device also comprises a device box; the device box comprises a box body 1a and an upper cover 1 b; the structure of which can be seen in figure 1; the box body 1a and the upper cover 1b are in turnover fit, and the device box is provided with an opening structure, so that internal components can be fixed and mounted conveniently; the air source box 2, the foot button valve 3, the quick release valve 4, the three-ventilation joint 5, the first air relay 6a and the second air relay 6b are all arranged in the box body 1 a. The box body 1a is arranged to support and protect the components, so that unified management and carrying are facilitated.

In the present embodiment, the structure thereof can be seen in fig. 1, the upper cover 1b is provided with a through hole for placing the button 3e of the foot operated button valve 3; a button valve sheath 7 corresponding to the position of the button 3e is arranged on the periphery of the through hole, and the button valve sheath 7 is in a shoe head shape. By skillful design and application of the button valve sheath 7, the error behavior that the operator can operate the pneumatic winch at any standing position is effectively avoided, and the operation behavior of the operator is standardized

The present solution is further described below with reference to specific embodiments:

referring to fig. 1 and 2, an embodiment of the present invention provides an anti-false start device for a pneumatic winch, which includes a device box 1 and a brake system. The apparatus box 1 is composed of a box body 1a and an upper cover 1 b. The air source box 2, the pedal button valve 3, the quick release valve 4, the three-way air joint 5 and the air relay 6 are fixedly arranged in the box body 1a, the starting air supply joint 1c and the braking air supply joint 1d are welded at the left end of the box body 1a, and the air source air inlet joint 2a of the air source box 2 is welded at the right end of the box body 1 a. The starting air supply connector 1c of the box body 1a is connected with an air inlet connector 11a of an air motor 11 of the pneumatic winch through an air pipeline, the braking air supply connector 1d of the box body 1a is connected with an air braking air inlet connector 8a of a braking band cylinder 8 of the pneumatic winch through an air pipeline, and an air source air inlet connector 2a of the air source box 2 of the box body 1a is connected with an air supply gate 16 of an air bottle of a machine room through an air pipeline and supplies air for the pneumatic winch during use and braking. The right end of the upper cover 1b is provided with a round hole in clearance fit with the pedal button valve 3, a button valve sheath 7 is welded around the round hole, and the upper cover 1b is connected with the box body 1a through a hinge 1e to form the device box 1.

Further, in this embodiment, the device case 1 is fixed with the air source case 2 in the installation of box body 1a, and the air source case 2 is the square or cylinder jar type, and the welding has 4 ~ 6 joints around the box, connects the internal diameter to be 5 ~ 25mm, and this embodiment is 4, is air supply air inlet connector 2a, exhaust joint 2b, 2c, 2d respectively. The air source air inlet joint 2a is connected with an air supply gate 16 of an air bottle of a machine room, the air outlet joints 2b and 2c are connected with the air relay 6 through air pipelines, and the air outlet joint 2d is connected with the pedal button valve 3 and respectively supplies air for the air relay 6 and the pedal button valve 3;

further, in this embodiment, a pedal button valve 3 is installed and fixed in the box body 1a of the device case 1, the pedal button valve 3 is a normally closed type, and has three air ports, namely a pedal air inlet 3a, a pedal air outlet 3b and a pedal air outlet 3c, the pedal air inlet 3a is connected with the first exhaust joint 2d, and the pedal air outlet 3b is connected with the quick air inlet 4a of the quick air release valve 4. The valve body 3d is fixedly arranged in the box body 1a, and the button 3e is exposed out of the round hole of the upper cover 1 b;

further, in this embodiment, a fast air release valve 4 is installed and fixed in the box body 1a of the device case 1, the fast air release valve 4 is a straight-through type or an angle type, the embodiment is a straight-through type, the fast air inlet 4a and the fast working air inlet 4b have the same diameter, and the inner diameter is 8 mm;

further, in this embodiment, a three-way air connector 5 is fixedly installed in the box body 1a of the device box 1, the three-way air connector 5 is of a right-angle three-way type, the inner diameter of the connector is 8mm, the diversion air inlet 5a is connected with the fast working air port 4b, the first diversion air outlet 5b is connected with the first control air port 6a3 of the air relay 6a, and the second diversion air outlet 5c is connected with the second control air port 6b3 of the air relay 6b to supply air to the first air relay 6a and the second air relay 6b respectively;

further, in this embodiment, an air relay 6 is fixedly installed in the box body 1a of the apparatus box 1, the number of the air relay 6 is 2-4, in this embodiment, 2 air relays are respectively a first air relay 6a and a second air relay 6b, the first air relay 6a has four air ports respectively including a first exhaust port 6a1, a first working air port 6a2, a first control air port 6a3 and a first air inlet 6a 4; the second air relay 6b has four air ports, which are a second air inlet 6b1, a second working air port 6b2, a second control air port 6b3 and a second air outlet 6b 4. The first control air port 6a3 of the first air relay 6a is connected with the first branch air outlet 5b of the three-way air joint, the first air inlet 6a4 is connected with the second air exhaust joint 2b of the air source box, and the first working air port 6a2 is connected with the starting air supply joint 1 c; the second control air port 6b3 of the second air relay 6b is connected with the second branch air outlet 5c of the three-way air connector, the second air inlet 6b1 is connected with the third air exhaust connector 2c of the air source box, and the second working air port 6b2 is connected with the brake air supply connector 1 d.

Further, in the embodiment, a button valve sheath 7 is welded on the upper cover 1b of the device box 1, the button valve sheath 7 is made of shoe-head-shaped steel or other hard material sheaths, and the arc height of the button valve sheath can accommodate 24-48 yardmards;

further, in this embodiment, the handle 1f is welded to the upper cover 1b of the device box 1, and is made of rectangular or circular steel, so that the upper cover 1b can be lifted up conveniently to install and connect the internal components of the device box.

The brake system consists of an air brake and a hand brake and is used for braking the pneumatic winch in the use process and in the non-operation process. The air brake consists of a brake band cylinder 8 and an air brake band 9. The hand brake is composed of a hand brake band 13 and a hand brake handle 14.

Further, in this embodiment, the air brake is composed of a band cylinder 8 and a band 9, the band 9 is composed of two bands, one end of each band is installed on the base support 12 of the pneumatic winch, and the other end of each band is connected together through a connecting mechanism, so that the band tightly wraps the brake drum at the right end of the drum 15 of the pneumatic winch. The body of the brake band cylinder 8 is fixed on the base bracket 12 of the pneumatic winch, the piston rod of the brake band cylinder is connected with the connecting mechanism of the air brake band 9, and the air brake air inlet joint 8a of the brake band cylinder is connected with the brake air supply joint 1d of the box body 1a of the device box 1 through an air pipeline to supply air for the brake band cylinder 8.

The embodiment of the invention provides an anti-misoperation device for a pneumatic small winch, which effectively avoids the misoperation that an operator can operate the pneumatic small winch by standing at will through the ingenious design and application of a button valve sheath 7, and standardizes the operation behavior of the operator; through the hidden design installation of the pedal button valve and the linkage design application of the pedal button valve and the pneumatic winch air motor handle, the false start of the pneumatic winch is effectively avoided; through the improved design of the belt braking cylinder and the pneumatic braking belt and the pneumatic interlocking design application of the belt braking cylinder and the pneumatic motor, the purpose that the pneumatic belt is released to brake when the pneumatic winch pneumatic motor rotates pneumatically, and the pneumatic winch pneumatic motor can brake immediately when the pneumatic winch pneumatic motor does not rotate pneumatically, is achieved, and the use safety of the pneumatic winch is effectively guaranteed.

The embodiment of the invention also provides an operation method of the pneumatic winch, which adopts the device and comprises the following steps:

step S1, pressing the button 3e of the foot button valve 3, and operating the air motor handle 10;

step S2, the operation of the air motor handle 10 is ended, and the button 3e of the foot operated button valve 3 is released.

According to the technical scheme, in the operation method of the pneumatic winch provided by the embodiment of the invention, the pneumatic winch can be started only by stepping down the button 3e of the pedal button valve 3 and simultaneously operating the air motor handle 10, so that the pneumatic winch can be prevented from being started by mistake; in addition, when the button 3e of the pedal button valve 3 is loosened without using the pneumatic winch, the pneumatic winch can realize automatic braking, thereby effectively ensuring the use safety of the pneumatic winch.

The operation method of the present solution is further described below with reference to specific embodiments:

another object of the present invention is to provide a method for applying the device, which can achieve the purpose of automatic braking without air intake and air brake belt for the air motor when the pneumatic winch is not used.

Referring to fig. 3 and fig. 4, an embodiment of the invention further provides a using method using the apparatus.

The method comprises the following steps: the brake band cylinder 8 is fixedly arranged on a base bracket 12 of the pneumatic winch, and a piston rod of the brake band cylinder 8 is fixedly connected with a connecting mechanism of the pneumatic brake band 9;

step two: the pneumatic control assembly in the box body 1a of the connecting device box 1 is firstly connected with a control air pipeline: a first exhaust joint 2d of the air source box 2 is connected with a pedal air inlet 3a of a pedal button valve 3, a pedal air outlet 3b of the pedal button valve 3 is connected with a quick air inlet 4a of a quick air release valve 4, a quick working air port 4b of the quick air release valve 4 is connected with a diversion air inlet 5a of a three-way air joint 5, a first diversion air outlet 5b of the three-ventilation joint 5 is connected with a first control air port 6a3 of a first air relay 6a, and a second diversion air outlet 5c of the three-ventilation joint 5 is connected with a second control air port 6b3 of a second air relay 6b through an 8mm rubber tube or a copper tube. Then connecting a working gas pipeline: a 20mm high-pressure rubber hose is used for connecting a second exhaust joint 2b of the air source box 2 with a first air inlet 6a4 of a first air relay 6a, connecting a first working air port 6a2 of the first air relay 6a with a starting air supply joint 1c, connecting a third exhaust joint 2c of the air source box 2 with a second air inlet 6b1 of the second air relay 6b, and connecting a second working air port 6b2 of the second air relay 6b with a braking air supply joint 1 d;

step three: the device box 1 is fixedly installed at the lower right rear position of the pneumatic winch, so that when the right foot of an operator extends into the sheath 7 of the pedal button valve 3, the right foot of the operator faces the handle 10 of the pneumatic winch and the right hand operation air motor 11, and the left hand operation brake handle 14 is in a standard standing posture;

step four: the connecting device box 1 starts an air supply joint 1c, an air inlet 11a of an air motor 11 of the pneumatic winch, a connecting device box 1 brakes an air supply joint 1d and an air brake air inlet joint 8a of a brake band cylinder 8 of the pneumatic winch;

step five: an air source air inlet connector 2a of an air source box 2 in a box body 1a of the connecting device box 1 is connected with an air supply gate 16 of an air bottle of a machine room;

step six: checking whether each connection and pneumatic control process is correct or not and fastening;

step seven: opening an air supply gate 16 of an air bottle of a machine room to supply air for an air source box 2 in a box body 1a of the device box 1, supplying compressed air in the air source box 2 for a first air relay 6a through a second air exhaust connector 2b, supplying air for the second air relay 6b through a third air exhaust connector 2c, and supplying air for a pedal button valve 3 through a first air exhaust connector 2 d; the second control air port 6b3 of the second air relay 6b has no control air, the second air inlet 6b1 and the second working air port 6b2 are in a communicated state, the working air (thick arrow line in the figure) from the third exhaust joint 2c of the air source box 2 enters the band brake air cylinder 8 through the air pipe line, the second air relay 6b and the air brake air inlet joint 8a of the band brake air cylinder 8, the piston rod of the band brake air cylinder 8 extends out, the air brake band 9 is tensioned, and the brake when the pneumatic small winch is not operated is realized;

step eight: the pedal 3 button 3e of button valve is pushed down, pedal 3 button is opened, pedal air inlet 3a and pedal gas outlet 3b intercommunication, control gas (thin arrow line in the figure) reaches quick air inlet 4a of quick release valve 4 through pedal air inlet 3a, pedal gas outlet 3b, reentry quick release valve 4, promote valve core 4c and block up the valve casing exhaust hole after, through case 4c hole, through quick work gas port 4b, reposition of redundant personnel air inlet 5a gets into three air connector 5, divide into two ways and get into air relay 6, provide control gas for air relay 6. One path enters the first air relay 6a through a first flow dividing air outlet 5b of the three-way air connector 5 and a first control air port 6a3 of the first air relay 6a, the inner valve assembly of the first air relay 6a is pushed to block a first exhaust port 6a1, a first air inlet 6a4 and a first working air port 6a2 of the first air relay 6a are communicated, working air enters the air motor 11 through the first air inlet 6a4, the first working air port 6a2, the device box 1 starts an air supply connector 1c, an air inlet 11a of the air motor 11 enters the air motor 11 to supply air to the air motor 11, the air motor handle 10 is pushed forwards or pulled backwards, and the air motor 11 drives a small winch roller 15 to rotate, so that a heavy object is lifted into or lifted into the lower part; the other path enters a second gas relay 6b through a second shunting gas outlet 5c of the three-way gas connector 5 and a second control gas port 6b3 of the second gas relay 6b, an inner valve assembly is pushed to block a second gas inlet 6b1, so that a second working gas port 6b2 is communicated with a second gas outlet 6b4, the working gas of the brake band cylinder 8 is discharged through a gas pipeline, the brake gas supply connector 1d, the second working gas port 6b2 and the second gas outlet 6b4, a piston rod of the brake band cylinder 8 retracts, the pneumatic brake band 9 leaves a brake drum of the roller 15 to release the brake, the pneumatic small winch is operated to lift or release heavy objects, the pneumatic brake band 9 does not brake, and the free rotation of the roller 15 is guaranteed.

Step nine: when the button 3e of the foot-operated button valve 3 is released, the foot-operated air inlet 3a and the foot-operated air outlet 3b of the foot-operated button valve 3 are closed, the control air can not pass through the foot-operated button valve 3, the control air of the air pipeline from the first air relay 6a to the first shunting air outlet 5b of the three-way air joint 5, from the second air relay 6b to the second shunting air outlet 5c of the three-way air joint 5 and from the three-way air joint 5 to the quick release valve 4 pushes the valve core 4c of the quick release valve 4 to reset, and is discharged from the quick exhaust hole, the first air relay 6a has no control air, the inner valve assembly is reset, the first exhaust hole 6a1 is opened, the first air inlet 6a4 is blocked, working air can not enter the air motor 11 through the first air relay 6a, the air motor 11 has no working air, the air motor 11 can not rotate no matter the air motor handle 10 is pushed forwards or pulled backwards, and even if the air motor handle 10 is operated by mistake, the pneumatic small winch can not operate. And the second air relay 6b has no control air because of the second control air port 6b3, the inner valve assembly resets under the push of the working air, the second air outlet 6b4 is blocked, the second air inlet 6b1 and the second working air port 6b2 are opened, the working air enters the brake band cylinder 8 through the third exhaust joint 2c of the air source box 2, the air pipeline, the second air inlet 6b1 of the second air relay 6b, the second working air port 6b2, the brake air supply joint 1d and the air brake air inlet joint 8a of the brake band cylinder 8, the piston rod of the brake cylinder 8 extends out, and the air brake band 9 is tensioned to realize braking.

The embodiment of the invention also provides a method for preventing the false start device by using the pneumatic small winch. When the pneumatic winch is used, the pneumatic winch with the hand brake and the air brake is firstly installed and fixed on the drilling platform surface according to the standard, the assembled device box 1 is installed below the right rear part of the pneumatic winch, and finally the air supply gate 16 of the machine room air cylinder, the device box 1, the pneumatic motor 11 of the pneumatic winch and the brake band air cylinder 8 are connected and fixed through air pipelines. And opening an air supply gate 16 of the air bottle of the machine room to supply air to the air source box 2 of the device box 1, and dividing the air source box 2 into three paths to provide working air sources for the first air relay 6a, the second air relay 6b and the pedal button valve 3. Since there is no any element of the operation device case 1, the supply of air to the foot-operated push-button valve 3 is cut off to the foot-operated push-button valve 3, and the quick release valve 4, the first relay valve 6a, and the second relay valve 6b are not controlled to be operated. Because the first air relay 6a is in a normally closed connection method, under the condition of no control air, the first air inlet 6a4 and the first working air port 6a2 are blocked by the internal valve assembly, at the moment, the first working air port 6a2 is communicated with the first exhaust port 6a1, the pneumatic winch air motor 11 does not have working air, and at the moment, the pneumatic winch does not work no matter whether the air motor handle 10 is pushed forwards or pulled backwards. However, the second relay device 6b is normally open, and when there is no control gas, the second inlet port 6b1 of the second relay device 6b communicates with the second working air port 6b2, and the working gas enters the brake band cylinder 8 through the second inlet port 6b1 of the second relay device 6b, the second working air port 6b2, the gas line, the brake gas supply connector 1d, and the gas brake gas inlet connector 8a, thereby achieving braking.

When a pneumatic small winch needs to be used, due to the arrangement of the sheath 7 of the pedal button valve 3, an operator needs to stand well according to the standard and can operate by extending the right foot into the sheath 7 of the button valve. The button 3e of the pedal button valve 3 is stepped down to enable the valve core of the pedal button valve 3 to move downwards to block the pedal exhaust port 3c, at the moment, the pedal air inlet 3a is communicated with the pedal air outlet 3b, control air passing through the pedal button valve 3 enters the quick release valve 4, the valve core 4c of the quick release valve 4 is pushed to move leftwards to block the exhaust port, the control air enters the three-way air connector 5 through the inner hole of the valve core, one way of the control air enters the first control air port 6a3 of the first air relay 6a, the inner valve assembly of the first air relay 6a is pushed to move downwards to block the first exhaust port 6a1, the first air inlet 6a4 is communicated with the first working air port 6a2, the working air coming out of the second exhaust connector 2b of the air source box 2 enters the air motor 11 through the air pipe line, the first air inlet 6a4 of the first air relay 6a, the first working air port 6a2, the starting air supply connector 1c and the air inlet 11a, the operator can lift or lower the heavy object by operating the air motor handle 10. And the other path of control air enters a second control air port 6b3 of the second air relay 6b from a second branch air port 5c of the three-way air connector 5, pushes an inner valve assembly of the second air relay 6b to move downwards to block a second air inlet 6b1, so that the working air of the brake band cylinder 8 is discharged from the air brake air inlet connector 8a, the air pipeline, the brake air connector 1d, a second working air port 6b2 of the second air relay 6b and a second air outlet 6b4, and the air brake band 9 is released.

When an operator leaves the pneumatic winch and the foot-operated button valve 3 is reset, the foot-operated air outlet 3b and the foot-operated air outlet 3c of the foot-operated button valve 3 are not communicated, the control air from the pipeline from the quick air release valve 4 to the foot-operated button valve 3 is immediately exhausted from the foot-operated air outlet 3c of the foot-operated button valve 3, the valve core of the quick air release valve 4 is reset to expose the air exhaust hole, the control air from the first air relay 6a to the three-way air connector 5, the control air from the second air relay 6b to the three-way air connector 5, the control air from the three-way air connector 5 to the quick air release valve 4 is exhausted from the quick air exhaust hole of the quick air release valve 4, the control air does not exist in the first air relay 6a and the second air relay 6b, the inner valve assembly of the first air relay 6a is reset to block the first air inlet 6a4, the first air exhaust hole 6a1 is opened, and the working air from the air motor 11 to the first, the pneumatic motor 11 of the pneumatic winch cannot rotate when no air exists; meanwhile, the valve assembly in the second air relay 6b is reset to block the second exhaust port 6b4 and open the second air inlet 6b1, so that the working air of the brake band cylinder 8 rapidly enters the brake band cylinder 8 from the second air inlet 6b1, the second working air port 6b2, the brake air connector 1d and the air brake air connector 8a of the second air relay 6b, the air brake band is rapidly braked, and the pneumatic winch cannot rotate no matter how the pneumatic motor handle 10 is mistakenly operated, and therefore the pneumatic winch is effectively prevented from being started by mistake.

In summary, the pneumatic winch false start prevention device and the use method using the device provided by the embodiment of the invention have the advantages that by skillful design and application of the button valve sheath 7, the false behavior that an operator can operate the pneumatic winch at any standing position is effectively avoided, and the operation behavior of the operator is standardized; through the hidden installation of the pedal button valve 3 and the linkage design of the pedal button valve 3 and the pneumatic winch air motor handle 10, the false start of the pneumatic winch is effectively avoided; through the improved design of the belt braking cylinder 8 and the air braking belt 9 and the air control interlocking design of the belt braking cylinder 8 and the air motor 11, the purposes that the air motor 11 of the pneumatic winch is provided with air and the air braking belt 9 is released to brake, the air motor 11 of the pneumatic winch is not provided with air and the air braking belt 9 brakes immediately are achieved, and the use safety of the pneumatic winch is effectively guaranteed.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The utility model provides a pneumatic jigger winch prevents mistake starting drive which characterized in that includes: the air source box (2), the foot-operated button valve (3) and the first air relay (6 a);

the air source air inlet joint (2a) of the air source box (2) is used for connecting an air supply gate (16) of an air bottle of a machine room;

a pedal air inlet (3a) of the pedal button valve (3) is connected to a first exhaust joint (2d) of the air source box (2), and a pedal air outlet (3b) of the pedal button valve (3) is connected to a first control air port (6a3) of the first air relay (6 a); the pedal button valve (3) is of a normally closed type, and the pedal air inlet (3a) is not communicated with the pedal air outlet (3 b); the pedal button valve (3) is switched from a closed state to an open state when being stepped, and the pedal air inlet (3a) is communicated with the pedal air outlet (3 b);

the first air inlet (6a4) of the first air relay (6a) is connected with the second air outlet joint (2b) of the air source box (2), and the first working air port (6a2) of the first air relay (6a) is used for connecting a starting air inlet joint (11a) of a pneumatic winch; the first air relay (6a) is of a normally closed type, and the first air inlet (6a4) is not communicated with the first working air port (6a 2); the first air relay (6a) is switched from a closed state to an open state when the first control air port (6a3) is filled with control air, and the first air inlet (6a4) is communicated with the first working air port (6a 2).

2. The pneumatic hand winch false start prevention device according to claim 1, further comprising a third ventilation joint (5) and a second gas relay (6 b);

a flow-dividing air inlet (5a) of the three-way air joint (5) is connected with a pedal air outlet (3b) of the pedal button valve (3), a first flow-dividing air outlet (5b) of the three-way air joint (5) is connected with a first control air port (6a3) of the first air relay (6a), and a second flow-dividing air outlet (5c) is connected with a second control air port (6b3) of the second air relay (6 b);

the second air inlet (6b1) of the second air relay (6b) is connected to the third air exhaust joint (2c) of the air source box (2), and the second working air inlet (6b2) of the second air relay (6b) is used for connecting an air brake air inlet joint (8a) of a brake system of the pneumatic winch; the second air relay (6b) is of a normally open type, and the second air inlet (6b1) is communicated with the second working air port (6b 2); the second air relay (6b) is switched from an open state to a closed state when the second control air port (6b3) is communicated with control air, and the second air inlet (6b1) is not communicated with the second working air port (6b 2).

3. The pneumatic winch mis-start prevention device as recited in claim 2, wherein, in the absence of control gas, the second internal valve assembly of the second gas relay (6b) is located at an initial position and blocks the second gas outlet (6b4), and the second gas inlet (6b1) is communicated with the second working gas outlet (6b 2);

under the condition of control gas introduction, the second internal valve assembly is pushed by the control gas to move to a control position and blocks the second air inlet (6b1), and the second working air port (6b2) is communicated with the second air outlet (6b 4).

4. The pneumatic winch anti-misoperation device according to claim 2, further comprising a quick release valve (4), wherein a quick air inlet (4a) of the quick release valve (4) is connected to the pedal air outlet (3b) of the pedal button valve (3), and a quick working air port (4b) of the quick release valve (4) is connected to the shunt air inlet (5a) of the three-way air joint (5); the quick release valve (4) comprises a valve shell and a valve core (4c) with an opening; the valve core (4c) can reciprocate along the inner wall of the valve shell under the action of control gas;

the valve core (4c) blocks the exhaust hole of the valve housing under the condition that the quick air inlet (4a) supplies control air;

under the condition that the quick working air port (4b) supplies control air, the valve core (4c) is reset, so that the exhaust hole of the valve shell is communicated with the quick working air port (4 b).

5. The pneumatic winch mis-start prevention device as claimed in claim 1, wherein the braking system further comprises an air brake mechanism; the air brake mechanism includes:

a brake band cylinder (8) arranged on a base bracket (12) of the pneumatic small winch;

the pneumatic belt brake is characterized in that a roller (15) arranged on the pneumatic winch and the brake belt cylinder (8) are a pneumatic brake belt (9) in stretching fit.

6. The pneumatic winch mis-start prevention device as claimed in claim 1, wherein, in the absence of control gas, the first internal valve assembly of the first gas relay (6a) is in an initial position and blocks the first gas inlet (6a4), and the first working gas inlet (6a2) is communicated with the first gas outlet (6a 1);

under the condition of control gas introduction, the first internal valve assembly is pushed to move to a control position by the control gas and blocks the first exhaust port (6a1), and the first air inlet (6a4) is communicated with the first working air port (6a 2).

7. The pneumatic winch false start prevention device according to any one of claims 1 to 6, further comprising a device box; the device box comprises a box body (1a) and an upper cover (1b), wherein the box body (1a) is in turnover fit with the upper cover (1 b);

the air source box (2), the pedal button valve (3), the quick release valve (4), the three-ventilation connector (5), the first air relay (6a) and the second air relay (6b) are all arranged in the box body (1 a).

8. The pneumatic winch false start prevention device according to claim 7, wherein the upper cover (1b) is provided with a through hole for placing a button (3e) of the foot button valve (3), the periphery of the through hole is provided with a button valve sheath (7) corresponding to the position of the button (3e), and the button valve sheath (7) is of a toe cap type.

9. A method of operating a pneumatic drawworks, using the apparatus of any one of claims 1-8, comprising:

step S1, pressing down a button (3e) of the pedal button valve (3) and simultaneously operating an air motor handle (10);

and step S2, finishing the operation of the air motor handle (10) and releasing the button (3e) of the foot-operated button valve (3).