Portable power-assisted valve emergency driving tool

Abstract

The utility model provides a portable power-assisted valve emergency driving device which comprises a speed reducer, a worm and gear pair is assembled in a shell of the speed reducer, and a worm gear of the worm and gear pair is coaxially and fixedly connected with an output sleeve used for being connected with a valve hand wheel shaft. A central cylinder hole of the power end interface is used for embedding and accommodating an output part of a power machine; the telescopic transmission part can stretch out and draw back in the axial direction to change the power transmission length and transmit power output by a power machine to a worm of the worm and gear pair. The device is portable, flexible, intrinsically safe and broad-spectrum; and the device is a portable and effective guarantee device for safe control and risk avoidance in a dangerous and emergency state, and has dual significance of emergency treatment, disaster relief and danger relief, and daily arrangement for improving the efficiency.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the special portable power dress of valve drive technical field, especially, it is related to a portable power auxiliary type valve emergency drive dress. BACKGROUND

[0002] At present, common various valve for large diameter pipeline fluid control, various kinds of power. Generally can be divided into angular travel and linear travel. Especially involving petroleum chemical industry pipeline of dangerous chemical industry, nuclear industry power, marine steam turbine and other valve control, in the process out of control, fire, dangerous chemical leakage and other emergency state needs to carry out the valve operation, often due to accident causes power failure or DCS control failure and cannot quickly and effectively change the control state of the valve, especially for large valve, manual operation time-consuming, and will directly threaten the safety of the operator. In addition, for underwater vessels, large ships and other in war readiness state, as well as high pressure and large flow oil and gas pipeline in emergency state control, the valve drive dress with power auxiliary emergency function has very important significance for guaranteeing the efficient and fast emergency operation. SUMMARY

[0003] In view of the problems in the prior art, the utility model provides the following technical scheme:

[0004] The portable power auxiliary type valve emergency drive dress is characterized by comprising

[0005] The reducer is assembled with a worm and gear pair in the shell, and the worm of the worm and gear pair is coaxially fixedly connected with an output sleeve for connecting the valve hand wheel shaft;

[0006] The power end interface is provided with a central cylinder hole for embedding and accommodating the output part of the power machine;

[0007] The telescopic transmission part can change the length of power transmission in the axial direction and transmit the output power of the power machine to the worm of the worm and gear pair.

[0008] Further, the telescopic transmission part comprises an outer square tube, an inner square tube, an outer shaft tube and an inner shaft rod arranged in sequence from outside to inside;

[0009] The inner shaft rod is in sliding connection with the outer shaft tube and rotates coaxially, the front end of the outer shaft tube is coaxially fixedly connected with the rear end of the worm, and the rear end of the inner shaft rod extends into the central cylinder hole of the power end interface and is fixed axially and rotatably connected with the power end interface around the shaft;

[0010] The front end of the inner square tube is fixedly connected with the reducer shell, the rear end of the outer square tube is fixedly connected with the power end interface, and the outer square tube and the inner square tube can slide axially relative to each other.

[0011] Further, the inner shaft rod is a hexagonal rod; the tube hole of the outer shaft tube is a hexagonal tube hole matching the outer periphery of the inner shaft rod, the inner shaft rod is sleeved in the tube hole of the outer shaft tube and is in sliding fit and coaxial rotation with the tube hole.

[0012] Further, the housing of the speed reducer is directly fixed with the first connecting seat at the front end of the inner square tube, the rear end of the worm extends out of the housing of the speed reducer and is formed with a hexagonal rod section, the hexagonal rod section is located in the seat hole of the first connecting seat at the front end of the outer shaft tube, the hexagonal rod section is coaxially connected by being embedded in the front end of the hexagonal tube hole of the outer shaft tube, and a group of outer shaft tube bearings are arranged between the outer surface of the front end of the outer shaft tube and the first connecting seat to realize the rotation connection between the outer shaft tube and the first connecting seat.

[0013] Further, the inner square tube is sleeved and fixed at the rear part of the first connecting seat at the front end, the rear end of the inner square tube is sleeved outside the front part of the inner square tube rear end cover sleeve, the sleeve hole of the inner square tube rear end cover sleeve is rotationally connected with the rear end of the outer shaft tube and can limit the axial movement of the outer shaft tube.

[0014] Further, the inner shaft rod can be extended or retracted in the axial direction through the sleeve hole of the inner square tube rear end cover sleeve.

[0015] Further, the outer square tube front end cover sleeve is sleeved and slid outside the inner square tube, the outer square tube front end cover sleeve is between the first connecting seat and the inner square tube rear end cover sleeve, and the rear sliding of the outer square tube front end cover sleeve is limited by the abutment of the inner square tube rear end cover sleeve.

[0016] Further, the outer square tube is sleeved outside the rear part of the inner square tube rear end cover sleeve and is in sliding fit with the inner square tube rear end cover sleeve;

[0017] The rear end of the outer square tube is sleeved and fixed on the front part of the power end interface; the rear end of the inner shaft rod extends into the central cylinder hole of the power end interface and is rotationally connected with the front part of the central cylinder hole through the inner shaft rod bearing and is axially fixed relative to the central cylinder hole after extending out of the sleeve hole of the inner square tube rear end cover sleeve;

[0018] The rear part of the central cylinder hole of the power end interface is used for embedding and accommodating the output part of the power machine, and an inner hexagonal connecting hole is opened at the axial center of the rear end surface of the inner shaft rod in the central cylinder hole;

[0019] Further, a anti-loosening bolt hole is further opened on the cylinder wall of the power end interface.

[0020] Further, the power end interface further extends rearwardly with a fixing plate, and the fixing plate is provided with a positioning hole.

[0021] This utility model is portable and flexible, inherently safe and has a wide range of applications; it reduces labor intensity and improves operational efficiency, and is a portable and effective protective equipment for safe operation and risk avoidance in dangerous and emergency situations. It has the dual significance of emergency response, disaster relief and rescue, and improving efficiency in daily use; it can meet the needs of different explosion-proof and protection levels; through different structural deformations and the addition of practical parts, it can better meet the characteristic function requirements of different industries and different scenarios. Attached Figure Description

[0022] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of this utility model. The illustrative embodiments of this utility model and their descriptions are used to explain this utility model and do not constitute an improper limitation of this utility model. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0023] Figure 1 This is a three-dimensional schematic diagram of the present invention in its contracted state;

[0024] Figure 2 This is a schematic diagram of the extended state of this utility model;

[0025] Figure 3 This is an exploded view of the present invention;

[0026] Figure 4 This is a perspective view of one embodiment of an adapter that is adapted to connect the power unit to this utility model. Detailed Implementation

[0027] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0028] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0029] As shown in the figure, this utility model includes a reducer 1, a telescopic transmission part, and a power end interface 17. The power end interface 17 is used to connect to a power unit. The telescopic transmission part can extend and retract axially to change the length of power transmission and transmit the output power of the power unit to the reducer 1. The reducer 1 is connected to an output sleeve 4, which is connected to the handwheel shaft of the valve, thereby enabling operators or robots to perform valve opening and closing operations from a distance. This utility model can also be fixed to the field pipeline by loading a fixing clamp, and when combined with a power unit with remote control functions such as Bluetooth and video imaging equipment, it can realize remote control operation and video imaging monitoring functions.

[0030] Specifically, the reducer 1 includes a housing, inside which a worm gear pair is installed. The worm gear pair achieves both speed reduction and torque increase, and also changes the direction of power output. The output sleeve 4 is coaxially fixed to the worm gear 2 via a spline 41. The worm 3 is rotatably connected to the housing via a worm bearing 31. Two sleeve bearings 7 clamp the worm gear 2 and are responsible for rotatably connecting the output sleeve 4 to the housing. The front end cover 5 at the worm and the side end cover 8 at the worm gear fix and seal the corresponding ports.

[0031] The telescopic transmission unit includes an outer square tube 16, an inner square tube 15, an outer shaft tube 10, an inner shaft rod 9, a first connecting seat 6, a front end cover 14 for the outer tube, and a rear end cover 13 for the inner square tube; wherein,

[0032] The inner shaft rod 9 is an outer hexagonal rod, meaning its outer circumference is hexagonal. The tube hole of the outer shaft tube 10 is an inner hexagonal tube hole that matches the outer circumference of the inner shaft rod 9. The inner shaft rod 9 is sleeved in the tube hole of the outer shaft tube 10 and slides with it. The outer tube surface of the outer shaft tube 10 is round, so that it can be rotated with the first connecting seat 6 and the inner square tube rear end cover 13 through the two sets of outer shaft tube bearings 11 sleeved on it, thereby realizing the relative sliding extension and contraction of the inner shaft rod 9 and the outer shaft tube 10 and their coaxial rotation.

[0033] The front part of the first connecting seat 6 is fixed to the housing of the reducer 1 by bolts, and the rear part is fixed to the front end of the inner square tube 15 by bolts. The rear end of the worm 3 of the worm gear pair extends out of the reducer housing and forms an outer hexagonal rod section 32. The outer hexagonal rod section 32 and the front end of the outer shaft tube 10 are located in the seat hole 61 of the first connecting seat 6. The outer hexagonal rod section 32 is coaxially connected by embedding into the front end of the inner hexagonal tube hole of the outer shaft tube 10. A set of outer shaft tube bearings 11 is provided between the outer surface of the front end of the outer shaft tube 10 and the first connecting seat 6 to realize the rotational connection between the outer shaft tube 10 and the first connecting seat 6.

[0034] The outer shaft tube 10 is located inside the tube hole of the inner square tube 15. The front end of the inner square tube 15 is sleeved on the rear part of the first connecting seat 6 and fixedly connected by bolts. The rear end of the inner square tube 15 is sleeved on the front part of the rear end cover 13 of the inner square tube and fixedly connected by bolts. The sleeve hole of the rear end cover 13 of the inner square tube and the rear end of the outer shaft tube 10 are rotatably connected by another set of outer shaft tube bearings 11, which can restrict the axial movement of the outer shaft tube 10. That is, the outer shaft tube 10 and the inner square tube 15 are relatively stationary in the axial direction.

[0035] The inner shaft 9 can extend or retract axially upward through the sleeve hole of the inner square tube rear end cover 13.

[0036] Both the outer square tube front end cap 14 and the outer square tube 16 are sleeved on the outer side of the inner square tube 15. The outer square tube front end cap 14 is fixed to the front end of the outer square tube 16 by bolts. The outer square tube front end cap 14 is slidably connected to the inner square tube 15 through its sleeve hole, and its sleeve hole is a square hole that matches the square outer peripheral surface of the inner square tube 15. This achieves axial sliding connection between the front end of the outer square tube and the inner square tube 15 and prevents relative rotation around the axis. The outer square tube front end cap 14 is located between the first connecting seat 6 and the inner square tube rear end cap 13. The inner square tube rear end cap 13 can stop and limit the backward sliding of the outer square tube front end cap 14 by abutting against it, thereby preventing the outer square tube 16 from coming off the inner square tube 15. Furthermore, the rear part of the inner square tube rear end cap 13 abuts against the outer square tube front end cap 14 to stop and limit its backward sliding.

[0037] Meanwhile, the rear outer circumferential surface of the inner square tube rear end cover 13 is adapted to the shape of the tube hole of the outer square tube 16, and the outer square tube is sleeved on the rear of the inner square tube rear end cover 13 and slides with it, thereby working together with the outer tube front end cover to achieve the sliding connection between the outer square tube 16 and the inner square tube 15 and prevent the relative rotation of the two around the axis.

[0038] The rear end of the outer square tube 16 is sleeved and fixed to the front part 172 of the power end interface 17 with bolts; the rear end of the inner shaft rod 9 extends out of the sleeve hole of the rear end cover 13 of the inner square tube and then extends into the central cylinder hole 170 of the power end interface 17 and is rotatably connected to the front part of the central cylinder hole through the inner shaft rod bearing 12 and is axially fixed relative to each other, that is, the power end interface 17, the inner shaft rod 9 and the outer square tube 16 can move synchronously in the axial direction.

[0039] The rear part of the central cylindrical hole 170 of the power end interface 17 is used to install and accommodate the output part of the power machine (e.g., a handheld electric drill). The rear end face of the inner shaft 9 in the central cylindrical hole has an internal hexagonal connection hole. The output part of the power machine is equipped with an adapter before installation. The adapter coaxially connects the inner shaft 9 with the output shaft of the power machine to transmit power.

[0040] Furthermore, to prevent the power unit from axially dislodging from the central cylinder hole 170 during operation, an anti-dislodgement bolt hole 1701 is provided on the cylinder wall of the power end interface 17 for inserting an anti-dislodgement bolt (not shown in the figure), and the anti-dislodgement bolt is screwed onto the output part of the power unit embedded in the central cylinder hole 170. The anti-dislodgement function is achieved by the limiting cooperation between the anti-dislodgement bolt and the anti-dislodgement bolt hole 1701.

[0041] Furthermore, to prevent relative rotation between the power unit and the power end interface 17 during operation, a fixing plate 171 extends rearward from the power end interface 17. The fixing plate 171 is provided with positioning holes, and positioning screws pass through the positioning holes and are screwed to the power unit to achieve anti-rotation fixing.

[0042] Figure 4 An embodiment of an adapter for connecting to the power output unit and the inner shaft 9 is provided. As shown in the figure, the front part 181 of the adapter is a hexagonal pin that matches the internal hexagonal connecting hole opened at the center of the rear end face of the inner shaft 9, the rear part 182 of the adapter is a connecting part that connects to the power output unit, and 180 is a weight reduction hole.

[0043] Working principle:

[0044] The power output path of this device is: power machine - inner shaft rod 9 - outer shaft tube 10 - worm 3 - worm wheel 2 - output sleeve 4 - valve handwheel shaft. By pulling the power end interface 17, the inner shaft rod 9 and the outer square tube 16 can be driven to slide and extend relative to the outer shaft tube 10 and the inner square tube 15 respectively.

[0045] The combination of the inner and outer square tubes synchronizes with the rotating shaft tube combination of the inner and outer shaft tubes to achieve telescopic changes; the square tube combination serves as both a protective sleeve for the rotating shaft tube combination and a torque-transmitting lever arm tube, possessing a dual function. The two aforementioned plug-in sliding combinations are coaxial combinations of the rotating power shaft and the protective telescopic lever arm square tube. After adjusting the length of the lever arm in the stopped state, power output can be initiated. In other words, while the power shaft outputs torque, it is not easy to change the engagement state of the power shaft.

[0046] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A portable power-assisted valve emergency actuation device, characterized in that, include The reducer has a worm gear pair installed inside its housing. The worm gear of the worm gear pair is coaxially fixed to the output sleeve for connecting the valve handwheel shaft. The power end interface has a central cylindrical hole for accommodating the output part of the power unit. The telescopic transmission unit is capable of extending and retracting axially to change the length of power transmission and to transmit the power output of the power unit to the worm of the worm gear pair.

2. The portable power-assisted valve emergency actuation device as described in claim 1, characterized in that, The telescopic transmission unit includes an outer square tube, an inner square tube, an outer shaft tube, and an inner shaft rod arranged sequentially from the outside to the inside; The inner shaft is slidably connected to the outer shaft tube and rotates coaxially. The front end of the outer shaft tube is coaxially fixed to the rear end of the worm gear. The rear end of the inner shaft extends into the central cylindrical hole of the power end interface and is axially fixed to the power end interface and can rotate relative to the axis. The front end of the inner square tube is fixedly connected to the reducer housing, and the rear end of the outer square tube is fixedly connected to the power end interface. The outer square tube and the inner square tube can slide relative to each other along the axial direction.

3. The portable power-assisted valve emergency actuation device as described in claim 2, characterized in that, The inner shaft is an external hexagonal shaft; the outer shaft tube has an internal hexagonal tube hole that matches the outer circumferential surface of the inner shaft. The inner shaft is fitted into the tube hole of the outer shaft tube and slides with it while rotating coaxially.

4. The portable power-assisted valve emergency actuation device as described in claim 2, characterized in that, The reducer housing is directly fixed to the front end of the inner square tube with a first connecting seat. The rear end of the worm gear extends out of the reducer housing and forms an outer hexagonal rod section. The outer hexagonal rod section and the front end of the outer shaft tube are located in the seat hole of the first connecting seat. The outer hexagonal rod section is coaxially driven by being embedded in the front end of the inner hexagonal tube hole of the outer shaft tube. A set of outer shaft tube bearings is provided between the outer surface of the front end of the outer shaft tube and the first connecting seat to realize the rotational connection between the outer shaft tube and the first connecting seat.

5. The portable power-assisted valve emergency actuation device as described in claim 4, characterized in that, The front end of the inner square tube is fitted and fixed to the rear part of the first connecting seat, and the rear end of the inner square tube is fitted outside the front part of the inner square tube rear end cover. The sleeve hole of the inner square tube rear end cover is rotatably connected to the rear end of the outer shaft tube and can restrict the axial movement of the outer shaft tube.

6. The portable power-assisted valve emergency actuation device as described in claim 5, characterized in that, The inner shaft can extend or retract axially upward through the sleeve hole of the rear end cover of the inner square tube.

7. The portable power-assisted valve emergency actuation device as described in claim 5, characterized in that, The inner square tube is slidably fitted with a front end cover of the outer square tube. The front end cover of the outer square tube is located between the first connecting seat and the rear end cover of the inner square tube, and the rear end cover of the inner square tube can stop and limit the backward sliding of the front end cover of the outer square tube by abutting against it.

8. The portable power-assisted valve emergency actuation device as described in claim 5, characterized in that, The outer square tube is fitted onto the rear part of the inner square tube's rear end cover and slides in fit with it; The rear end of the outer square tube is sleeved and fixed to the front of the power end interface; the rear end of the inner shaft extends backward out of the sleeve hole of the rear end cover of the inner square tube and then extends into the central cylinder hole of the power end interface and is rotatably connected to the front of the central cylinder hole through the inner shaft bearing and is axially fixed relative to it. The rear part of the central cylindrical hole of the power end interface is used to install and accommodate the output part of the power unit. The rear end face of the inner shaft inside the central cylindrical hole has an internal hexagonal connection hole.

9. The portable power-assisted valve emergency actuation device as described in claim 1 or 8, characterized in that, The cylinder wall of the power end interface is also provided with anti-loosening bolt holes.

10. The portable power-assisted valve emergency actuation device as described in claim 1 or 8, characterized in that, The power end interface also extends rearward with a fixing plate, which has positioning holes.

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