Valve auxiliary operation tool

Abstract

In order to solve the problem that a downhole valve is inconvenient to operate, the utility model provides an auxiliary operation tool for a valve. Comprising a rotating handle, a telescopic rod fixedly connected to the lower portion of the rotating handle, a telescopic transmission shaft coaxially arranged in the telescopic rod, a fixed disc fixedly connected to the lower portion of the movable end of the telescopic rod, and an even number of clamping mechanisms arranged below the fixed disc and symmetrically distributed in pairs along the circle center of the fixed disc. The telescopic transmission shaft is composed of a driving shaft, a driven shaft and a transmission sleeve, the driving shaft is slidably connected to the transmission sleeve through a spline, the end of the driving shaft is connected with a driving mechanism, the driving mechanism drives the telescopic transmission shaft to rotate, and the telescopic transmission shaft can drive the multiple clamping mechanisms to synchronously act through the bevel gear set so that the valve hand wheel can be clamped. And when the length of the telescopic rod is adjusted to adapt to underground valves with different depths, the length of the telescopic transmission shaft can be synchronously changed along with the telescopic rod, and the transmission stability can be ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of valve auxiliary tools, in particular to a valve auxiliary operation tool. Background Art

[0002] Some valves installed in underground valve wells in thermal power plants and petrochemical enterprises are difficult to operate. Since most of the work in the valve well is done in a confined space, toxic gas poisoning incidents often occur due to inadequate personnel protection. Utility Model Content

[0003] In order to solve the problem of inconvenient operation of bottom well valves, the utility model provides a valve auxiliary operation tool, and the technical solution adopted is as follows:

[0004] A valve auxiliary operation tool, comprising:

[0005] Turn the handle;

[0006] The telescopic rod is composed of a fixed rod and a movable rod, wherein the fixed rod is fixedly connected to the bottom of the rotating handle, one end of the movable rod is slidably connected to the inside of the fixed rod along the axis direction of the fixed rod in the length direction, and the other end is fixedly connected to a fixed plate, and a fixing device for fixing the relative position between the fixed rod and the movable rod is provided between the fixed rod and the movable rod;

[0007] The telescopic transmission shaft is composed of a driving shaft, a driven shaft and a transmission sleeve. One end of the transmission sleeve in the length direction is coaxially fixedly connected to the inside of the movable rod, and the other end is coaxially slidably connected to the inside of the fixed rod. The driving shaft is coaxially rotatably connected to the inside of the fixed rod, and the end of the driving shaft close to the movable rod is coaxially slidably connected to the inside of the transmission sleeve through a spline. One end of the driven shaft in the length direction is coaxially fixedly connected to the transmission sleeve, and the other end passes through the fixed plate and is coaxially fixedly connected to the transmission bevel gear;

[0008] The driving mechanism, the output end of which is connected to the driving shaft for driving the driving shaft to rotate;

[0009] The clamping mechanism is located below the fixed disk and is symmetrically arranged in even groups along the center of the fixed disk. Each group of clamping mechanisms consists of a transmission screw, a transmission nut and a clamping block. The length direction of the transmission screw is distributed radially along the fixed disk and is rotatably connected to the bottom of the fixed disk. The end of the transmission screw close to the transmission gear is coaxially fixedly connected with a driven bevel gear, and the driven bevel gear is meshed and connected with the transmission gear. The transmission nut is threadedly connected to the transmission screw, and the clamping block is fixedly connected to the transmission nut, and the inner side of the clamping block is provided with a clamping groove for cooperating with the valve.

[0010] Furthermore, the fixing device includes a positioning bolt, a plurality of groups of mounting holes are distributed along the length direction of the fixing rod, and the movable rod is provided with threaded holes distributed corresponding to the positions of the mounting holes.

[0011] Furthermore, the driving mechanism is a servo motor, the servo motor is fixedly connected to the rotating handle, and the output shaft of the servo motor is transmission-connected to one end of the driving shaft away from the driven shaft.

[0012] Furthermore, it also includes a control system, which is composed of a controller, a pressure sensor and an alarm. The pressure sensor is arranged on the side wall of the clamping groove and is used to detect the clamping force between the clamping block and the valve. The pressure sensor is connected to the signal input end of the controller, and the alarm and servo motor are connected to the signal output end of the controller.

[0013] Furthermore, a clamping force range threshold is preset in the controller, and when the detection value of the pressure sensor is outside the clamping force range threshold, the controller controls the alarm to send a corresponding alarm signal.

[0014] The control system also includes a torque sensor, which is coaxially fixedly connected to the outside of the transmission sleeve and fixedly connected to the movable rod, and the torque sensor is connected to the signal input end of the controller.

[0015] Furthermore, the driving shaft is coaxially rotatably connected to the interior of the fixing rod via a first bearing.

[0016] Furthermore, the driven shaft is coaxially rotatably connected to the inside of the movable rod via a second bearing.

[0017] Furthermore, both ends of the transmission screw in the length direction are rotatably connected to the bottom of the fixed plate through a third bearing.

[0018] Furthermore, a guide groove whose length is distributed along the radial direction is provided on the lower end surface of the fixing plate, and the transmission nut is slidably connected to the inside of the guide groove.

[0019] The beneficial effects of the utility model are:

[0020] 1. The driving mechanism can drive the telescopic transmission shaft to rotate, and then drive multiple groups of clamping mechanisms to move synchronously through the telescopic transmission shaft to achieve synchronous adjustment of the spacing between the clamping mechanisms, thereby adapting to the clamping of valve handwheels of different sizes. The operation is simple and there is no need to control a single group of clamping mechanisms separately;

[0021] 2. When it is necessary to operate the bottom valves at different depths, the clamping mechanism on the fixed plate can be driven to move up and down by adjusting the length of the telescopic rod, and the telescopic transmission shaft can change synchronously with the length of the telescopic rod to ensure the stability of the transmission;

[0022] 3. By setting up a control system to monitor the clamping force between the clamping block and the valve handwheel, it can ensure that the clamping mechanism clamps the valve handwheel, avoiding problems such as inability to rotate or incomplete rotation due to too small clamping force and easy component wear caused by too large clamping force, effectively improving the valve clamping effect and the service life of components. Description of the Drawings

[0023] Figure 1 Structural schematic diagram of the present invention

[0024] Figure 2 is Figure 1 Partial enlarged schematic diagram at position A in

[0025] Figure 3 is Figure 1 Partial enlarged schematic diagram at position B in

[0026] Figure 4 Structural schematic diagram of the control system

[0027] Among them, 1 - rotating handle;

[0028] 2 - telescopic rod, 201 - fixed rod, 202 - movable rod, 203 - first slot, 204 - second slot, 205 - third slot, 206 - first bearing, 207 - fourth slot, 208 - second bearing, 209 - mounting hole, 210

[0029] - fixing bolt;

[0030] 3 - telescopic transmission shaft, 301 - driving shaft, 302 - driven shaft, 303 - transmission sleeve;

[0031] 4 - fixed disk, 401 - guide slot;

[0032] 5 - transmission screw, 6 - transmission nut, 7 - third bearing, 8 - driven bevel gear, 9 - driving bevel gear, 10 - clamping block, 1001 - clamping groove, 11 - servo motor, 12 - pressure sensor, 13 - torque sensor, 14 - controller, 15 - alarm. Detailed implementation manners

[0033] Hereinafter, exemplary embodiments of the present disclosure will be described in more detail with reference to the drawings. Although the exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided so that the present disclosure can be more thoroughly understood and the scope of the present disclosure can be completely conveyed to those skilled in the art.

[0034] In the description of the utility model, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the viewing direction or position relationship, and are only for the convenience of describing the utility model, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model.

[0035] like Figure 1 A valve auxiliary operation tool shown in the figure includes a rotating handle 1, a telescopic rod 2, a telescopic transmission shaft 3, a fixed plate 4 and a clamping mechanism arranged below the fixed plate 4. The telescopic transmission shaft 3 is located inside the telescopic rod 2 and can change synchronously with the length of the telescopic rod 2. The telescopic transmission shaft 3 is transmission-connected to the clamping mechanism, and the telescopic transmission shaft 3 can drive the clamping mechanism to clamp and release.

[0036] Specifically, Figure 1 , Figure 2 As shown, the telescopic rod 2 is composed of a fixed rod 201 and a movable rod 202. The length of the fixed rod 201 is distributed in the vertical direction, the upper end is fixedly connected to the rotating handle 1, the lower end is open, and a first slot hole 203, a second slot hole 204, and a third slot hole 205 are coaxially arranged from bottom to top. The upper end of the third slot hole 205 passes through the upper end of the fixed rod 201, and a groove is also arranged on the upper end surface of the fixed rod 201. A first bearing 206 coaxially distributed with the fixed rod 201 is arranged in the groove; the length of the movable rod 202 is distributed in the vertical direction and is coaxially slidably connected to the first slot hole 20 3, and a fourth slot hole 207 coaxially penetratingly distributed is provided in the movable rod 202, and a second bearing 208 is coaxially fixed on the inner wall of the fourth slot hole 207; a plurality of groups of mounting holes 209 penetratingly distributed are provided on the side wall of the first slot hole 203 of the fixed rod 201, and the plurality of groups of mounting holes 209 are evenly spaced along the height direction, and threaded holes corresponding to the positions of the mounting holes 209 are provided on the side wall of the movable rod 202, and a fixing bolt 210 passes through the mounting hole 209 from the outside to the inside and is connected with the threaded hole on the movable rod 202. The above structure can adjust the length of the telescopic rod 2 and fix it.

[0037] The telescopic transmission shaft 3 is composed of a driving shaft 301, a driven shaft 302 and a transmission sleeve 303. The driving shaft 301 is rotatably connected inside the fixed rod 201 through a first bearing 206. The driven shaft 302 is coaxially rotatably connected inside the fourth slot 207 through two groups of second bearings 208. And the upper end of the transmission shaft 302 is coaxially and fixedly connected inside the transmission sleeve 303. The lower part of the transmission sleeve 303 is rotatably connected inside the fourth slot 207. The upper part of the transmission sleeve 303 is located inside the first slot 203 and the second slot 204. And the transmission sleeve 303 can slide along the inner wall of the second slot 204 in the axial direction of the fixed rod 201. The lower end of the driving shaft 301 is connected to the spline groove on the inner wall of the transmission sleeve 303 through splines.

[0038] When the length of the telescopic rod 2 needs to be adjusted, the movable rod 202 slides up and down inside the first slot 203 of the fixed rod 201. Since the driven shaft 302 and the transmission sleeve 303 can only rotate relative to each other and cannot move axially, and the transmission sleeve 303 is fixed to the driven shaft 302, and there is no axial displacement between the driving shaft 301 and the fixed rod 201 either. Therefore, when the movable rod 202 slides inside the fixed rod 201, it will drive the transmission sleeve 303 to slide axially along the driving shaft 301, so as to realize the synchronous change of the length of the telescopic transmission shaft 3 with the length of the telescopic rod 2. When adjusted to the appropriate length, the fixed rod 201 and the movable rod 202 are fixed by a fixing bolt 210.

[0039] In addition, a servo motor 11 is also provided at the upper end of the rotating handle 1. The output shaft of the servo motor 11 is coaxially and fixedly connected to the driving shaft 301. The driving shaft 301 can be driven to rotate by the servo motor 11, and the driving shaft 301 drives the transmission sleeve 303 and the driven shaft 302 to rotate.

[0040] The fixing disk 4 is integrally in a disk structure. An annular boss is fixedly connected to the outer side of its lower end. The lower end of the driven shaft 302 passes through the fixing disk 4 and extends downward by a certain length and is coaxially and fixedly connected with a driving bevel gear 9. An even number of clamping mechanisms are arranged between the driving bevel gear 9 and the boss. And the even number of clamping mechanisms are symmetrically distributed in pairs along the center of the fixing disk 4. In this embodiment, four groups of clamping mechanisms are evenly distributed at intervals along the circumference of the fixing disk 4, such as Figure 1 and Figure 3As shown, each group of clamping mechanisms is composed of a transmission screw 5, a transmission nut 6 and a clamping block 10. The length of the transmission screw 5 is distributed radially along the fixed disk 4, and its two ends in the length direction are rotatably connected to the fixed disk 4 through two groups of third bearings 7. The two groups of third bearings 7 are respectively fixedly connected to the inner wall of the boss on the outer side of the lower end of the fixed disk 4 and the lower end surface of the fixed disk 4 close to the active bevel gear 9. One end of the transmission screw 5 close to the active bevel gear 9 is coaxially fixedly connected with a driven bevel gear 8. The four groups of driven bevel gears 8 are meshed and transmitted with the active bevel gear 9. The transmission nut 6 is threadedly connected to the transmission screw 5, and the clamping block 10 is fixedly connected to the transmission nut 6. A clamping groove 1001 is provided on the inner side surface of the clamping block 10, and the clamping groove 1001 can be engaged with the valve The outer circle of the door handwheel is engaged, and the driven shaft 302 drives the active bevel gear 9 to rotate, and the active bevel gear 9 drives the driven bevel gear 8 to rotate, thereby driving the transmission screw 5 to rotate, and then driving the transmission nut 6 to move along the length direction of the transmission screw 5 to complete the adjustment of the radial position of the clamping block 10 on the fixed disk 4, and realize the adjustment of the distance between the two symmetrically distributed groups of clamping blocks 10, which is convenient for clamping the valve handwheel and driving it to rotate. In addition, a guide groove 401 is also provided on the lower end surface of the fixed disk 4, and the guide groove 401 is located directly above the transmission screw 5, and its direction and length are set corresponding to the transmission screw 5. The upper end of the transmission nut 6 can slide along the length direction of the guide groove 401 to guide the transmission nut 6 and the clamping block 10.

[0041] In this embodiment, a control system is also included, such as Figure 4 As shown, the control system is composed of a pressure sensor 12, a controller 14 and an alarm 15. The pressure sensor 12 is as shown in FIG. Figure 3 As shown, it is arranged on the inner wall of the clamping groove 1001 and is used to detect the size of the clamping force along the radial direction of the fixed disk 4. The pressure sensor 12 and the alarm 15 are respectively connected to the signal input end and the signal output end of the controller 14, and the servo motor 11 is connected to the signal output end of the controller, and a clamping force range threshold is preset in the controller 14. When the clamping force detected by the pressure sensor 12 is less than the minimum value of the clamping force range threshold or greater than the maximum value of the clamping force range threshold, the controller 14 controls the alarm 15 to send out a corresponding "unclamped" or "clamped too tight" sound and light alarm signal to remind the operator. At the same time, when the clamping force detected by the pressure sensor 12 is greater than the maximum value of the clamping force range threshold, the controller 14 controls the servo motor 11 to stop working.

[0042] In addition, the control system further includes a torque sensor 13. The torque sensor 13 is a strain gauge torque sensor, and its elastic shaft is coaxially and fixedly connected to the outside of the transmission sleeve 303 and fixedly connected to the upper end of the movable rod 202. The torque sensor 13 can detect the torque between the transmission sleeve 303 and the driving shaft 301. When the spline between them fails, the controller 14 receives that the detected value of the torque sensor 13 is zero or less than a preset value. At this time, the controller 14 can control the alarm 15 to send out a corresponding alarm signal to remind the operator to stop the detection and replace or repair the components.

[0043] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, several improvements can be made without departing from the principle of the present invention, and these improvements should also be regarded as the protection scope of the present invention.

Claims

1. A valve auxiliary operation tool, characterized in that: include: Turn the handle; The telescopic rod is composed of a fixed rod and a movable rod, wherein the fixed rod is fixedly connected to the bottom of the rotating handle, one end of the movable rod is slidably connected to the inside of the fixed rod along the axis direction of the fixed rod in the length direction, and the other end is fixedly connected to a fixed plate, and a fixing device for fixing the relative position between the fixed rod and the movable rod is provided between the fixed rod and the movable rod; The telescopic transmission shaft is composed of a driving shaft, a driven shaft and a transmission sleeve. One end of the transmission sleeve in the length direction is coaxially fixedly connected to the inside of the movable rod, and the other end is coaxially slidably connected to the inside of the fixed rod. The driving shaft is coaxially rotatably connected to the inside of the fixed rod, and the end of the driving shaft close to the movable rod is coaxially slidably connected to the inside of the transmission sleeve through a spline. One end of the driven shaft in the length direction is coaxially fixedly connected to the transmission sleeve, and the other end passes through the fixed plate and is coaxially fixedly connected to the transmission bevel gear; The driving mechanism, the output end of which is connected to the driving shaft for driving the driving shaft to rotate; The clamping mechanism is located below the fixed disk and is symmetrically arranged in even groups along the center of the fixed disk. Each group of clamping mechanisms consists of a transmission screw, a transmission nut and a clamping block. The length direction of the transmission screw is distributed radially along the fixed disk and is rotatably connected to the bottom of the fixed disk. The end of the transmission screw close to the transmission gear is coaxially fixedly connected with a driven bevel gear, and the driven bevel gear is meshed and connected with the transmission gear. The transmission nut is threadedly connected to the transmission screw, and the clamping block is fixedly connected to the transmission nut, and the inner side of the clamping block is provided with a clamping groove for cooperating with the valve.

2. The valve auxiliary operation tool according to claim 1, characterized in that: The fixing device comprises a positioning bolt, a plurality of groups of mounting holes are distributed along the length direction of the fixing rod, and threaded holes corresponding to the positions of the mounting holes are arranged on the movable rod.

3. The valve auxiliary operation tool according to claim 1, characterized in that: The driving mechanism is a servo motor, the servo motor is fixedly connected to the rotating handle, and the output shaft of the servo motor is transmission-connected to one end of the driving shaft away from the driven shaft.

4. The valve auxiliary operation tool according to claim 1, characterized in that: It also includes a control system, which consists of a controller, a pressure sensor and an alarm. The pressure sensor is arranged on the side wall of the clamping groove and is used to detect the clamping force between the clamping block and the valve. The pressure sensor is connected to the signal input end of the controller, and the alarm and servo motor are connected to the signal output end of the controller.

5. The valve auxiliary operation tool according to claim 4, characterized in that: The controller is preset with a clamping force range threshold. When the detection value of the pressure sensor is outside the clamping force range threshold, the controller controls the alarm to send a corresponding alarm signal.

6. The valve auxiliary operation tool according to claim 4, characterized in that: The control system also includes a torque sensor, which is coaxially fixedly connected to the outside of the transmission sleeve and fixedly connected to the movable rod, and the torque sensor is connected to the signal input end of the controller.

7. The valve auxiliary operation tool according to claim 1, characterized in that: The driving shaft is coaxially rotatably connected to the interior of the fixing rod through a first bearing.

8. The valve auxiliary operation tool according to claim 1, characterized in that: The driven shaft is coaxially rotatably connected to the inside of the movable rod through a second bearing.

9. The valve auxiliary operation tool according to claim 1, characterized in that: The two ends of the transmission screw in the length direction are rotatably connected to the bottom of the fixed plate through the third bearing.

10. The valve auxiliary operation tool according to claim 1, characterized in that: The lower end surface of the fixing plate is provided with a guide groove whose length is distributed along the radial direction, and the transmission nut is slidably connected inside the guide groove.

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