Manual auxiliary tool suitable for valve hand wheel switch at high position

Abstract

The utility model relates to the technical field of valve switch auxiliary tools, and discloses a manual auxiliary tool suitable for a high-position valve hand wheel switch, which comprises a fixed handle, a rotating handle, a gear transmission assembly and a fixed gripper, the fixed handle is hinged with the front end of the rotating handle, and the fixed gripper is rotatably connected to the front end of the fixed handle. The gear transmission assembly is arranged among the fixed handle, the front end of the rotating handle and the fixed gripper, the gear transmission assembly comprises a driving gear, a first transmission gear, a second transmission gear and a third transmission gear, and the valve hand wheel is fixed through the fixed gripper, and the hinge point between the fixed handle and the rotating handle is located at the front end position; the driving gear adopts a sector gear and can move along the length direction of the fixed handle, the valve can be opened and closed in the same direction continuously, the total transmission ratio of two-stage gear transmission is smaller than 1, the rotating speed can be effectively increased, and the torque can be effectively reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to valve technical field, concretely relates to a manual auxiliary tool suitable for high place valve hand wheel switch. BACKGROUND

[0002] In petrochemical industry, various valves are one of the indispensable equipment, and a large part of the valves are manual valves with hand wheel structure, some high-positioned valves often need to be specially set with operation platform, and some valves are not often switched, and setting the platform is too high in cost, and mobile ladders are often used for operation.

[0003] Whether it is a ladder or a vertical ladder, single-person operation is difficult, and using a long handle F wrench has the defects of slow switching speed, time and labor, and each high-positioned valve group setting operation platform is not economical, especially during device start-up and shutdown, emergency treatment and the like, the defects are more obvious, and if all the positions not often switched are provided with operation platforms, there are defects of large investment and low utilization rate. UTILITY MODEL CONTENTS

[0004] In view of the above defects of the prior art, the utility model provides a manual auxiliary tool suitable for high-positioned valve hand wheel switch and system, which can effectively solve the inconvenience of valve switching in the prior art.

[0005] To achieve the above object, the utility model realizes the following technical scheme:

[0006] The utility model provides a manual auxiliary tool suitable for high-positioned valve hand wheel switch, characterized by comprising:

[0007] The fixed handle is rotationally connected with a first driven gear, a second driven gear and a third driven gear at the front end, the first driven gear and the second driven gear are coaxially fixedly connected, and the third driven gear is connected in meshing transmission with the second driven gear;

[0008] The rotating handle is rotationally connected with the front end of the fixed handle, and the front end of the rotating handle is further fixedly connected with a driving gear, and the driving gear is connected in meshing transmission with the first driving gear;

[0009] Further comprising a fixed gripper, the fixed gripper is fixedly connected with the third driven gear and is used for clamping with the valve hand wheel;

[0010] The driving gear is a sector gear, the front end of the fixed handle is further provided with a long hole distributed along the length direction of the fixed handle, the rotating handle is fixedly connected with a rotating pin rotating with the long hole, and the rotating pin can slide along the length direction of the long hole;

[0011] The number of teeth of the driving gear is greater than that of the first driven gear, the number of teeth of the second driven gear is greater than that of the third driven gear, and the total transmission ratio is less than 1.

[0012] Further, the fixed gripper comprises a fixed plate and a plurality of clamping jaws, the plurality of clamping jaws are uniformly distributed along the circumferential direction of the fixed plate, and the end of the clamping jaw is provided with a trapezoidal groove for clamping cooperation with the rim of the valve hand wheel.

[0013] Further, the clamping jaw is connected to the fixed plate through hinging at one end, and a spring is connected between the clamping jaw and the fixed plate.

[0014] Further, a friction surface matched with the rim of the valve hand wheel is arranged on the inner side wall of the trapezoidal groove.

[0015] Further, the fixed handle and the rotating handle are both telescopic rods, and the hinging point between the fixed handle and the rotating handle is located at the movable part of the telescopic rod.

[0016] Further, the fixed part of the fixed handle and the rotating handle is provided with a rubber sheath.

[0017] Further, a first rotating shaft is rotatably connected to the front end of the fixed handle, and the first driven gear and the second driven gear are coaxially fixedly connected with the first rotating shaft.

[0018] Further, a second rotating shaft is rotatably connected to the front end of the fixed handle, the third driven gear is coaxially fixedly connected with the second rotating shaft, and the fixed gripper is fixedly connected with the second rotating shaft.

[0019] Compared with the prior art, the technical scheme has the following beneficial effects:

[0020] 1. The valve hand wheel is fixed by the fixed gripper, and the fixed gripper can be rotated by the rotating handle, so that the opening or closing operation of the valve hand wheel is realized, the hinging point between the fixed handle and the rotating handle is located at the front end position, and the fixed handle and the rotating handle form a labor-saving lever structure to drive the fixed gripper, so that the operation is labor-saving.

[0021] 2. The two-stage gear transmission is arranged between the front end of the rotating handle and the fixed gripper, and the total transmission ratio of the two-stage gear transmission is less than 1, so that the rotating speed can be improved and the torque can be reduced.

[0022] 3. The driving gear adopts a sector gear to drive the first driven gear to rotate, the sector gear and the pinion of the double gear are continuously engaged and disengaged by continuously sliding the rotating handle up and down along the long hole on the fixed handle, and the sector gear is driven to rotate by the rotating handle, so that the effect of continuously opening or closing the valve in the same direction can be realized.

[0023] 4. The fixed handle and the rotating handle both adopt telescopic rod structure, by adjusting the length of both, the opening and closing operation of the valve handle at different height can be realized, and the length adjustment of the power arm can also be realized, the higher the valve handle, the more labor-saving operation. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained according to these drawings without creative labor.

[0025] Figure 1 is a structural schematic diagram of the present application;

[0026] Figure 2 is a structural schematic diagram of the fixed handle in the present application

[0027] Figure 3 is a structural schematic diagram of the fixed rod of the fixed handle in the present application;

[0028] Figure 4 is a structural schematic diagram of the movable rod of the fixed handle in the present application;

[0029] Figure 5 is a structural schematic diagram of the rotating handle in the present application;

[0030] Figure 6 is a structural schematic diagram of the fixed gripper in the present application;

[0031] Figure 7 is a schematic diagram in the operating state of the present application;

[0032] Figure 8 is a schematic diagram in the cooperating state of the present application with the valve handle.

[0033] 1. The fixed handle, 101. The fixed rod, 102. The movable rod, 103. The rubber sheath, 104. The adjusting hole, 105. The fixed hole, 106. The first rotating shaft hole, 107. The second rotating shaft hole, 108. The long hole;

[0034] 2. The rotating handle, 201. The rotating pin;

[0035] 3. The driving gear;

[0036] 4. The first rotating shaft;

[0037] 5. The first transmission gear;

[0038] 6. The second transmission gear;

[0039] 7 - second rotation axis;

[0040] 8 - third transmission gear;

[0041] 9 - fixed gripper, 901 - fixed plate, 902 - clamping jaw, 903 - trapezoidal groove, 904 - friction surface, 905 - spring;

[0042] 10 - valve hand wheel;

[0043] 11 - pipeline. DETAILED DESCRIPTION

[0044] To make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be described clearly and completely below in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0045] The utility model will be further described below in combination with embodiments.

[0046] As Figures 1-8 shown, the utility model provides a kind of manual auxiliary tool suitable for high place valve hand wheel switch, including fixed handle 1, rotating handle 2, gear transmission assembly and fixed gripper 9, fixed handle 1 is hingedly connected with the front end of rotating handle 2, fixed gripper 9 is rotatably connected in the front end of fixed handle 1, gear transmission assembly is set between the front end of fixed handle 1, rotating handle 2 and fixed gripper 9, and fixed gripper 9 can be rotated by gear transmission assembly by rotating handle 2 drive.

[0047] Specifically, gear transmission assembly includes driving gear 3, first transmission gear 5, second transmission gear 6 and third transmission gear 8, driving gear 3 is fixedly connected to the front end of rotating handle 2 by rotating pin 201;First transmission gear 5 and second transmission gear 6 are rotatably connected to the front end of fixed handle 1, first transmission gear 5 can be connected with driving gear 3 meshing transmission, in this embodiment, both are coaxially fixedly connected with first rotation axis 4, and first rotation axis 4 is rotatably connected with the front end of fixed handle 1;The front end of fixed handle 1 is also rotatably connected with second rotation axis 7, third transmission gear 8 is coaxially fixedly connected to second rotation axis 7, third transmission gear 8 is connected with second transmission gear 6 meshing transmission, and the end of second rotation axis 7 penetrating fixed handle 1 is fixedly connected with fixed gripper 9.

[0048] The number of teeth z1 of the driving gear 3 is greater than the number of teeth z2 of the first transmission gear 5, the number of teeth z3 of the second transmission gear 6 is greater than the number of teeth z4 of the third transmission gear 8, and (z1 / z2)*(z3 / z4) < 1, i.e. the total transmission ratio is less than 1, so as to improve the rotating speed and reduce the torque.

[0049] In the embodiment, the driving gear 3 is a sector gear, and the sector gear can slide up and down along the length direction of the fixed handle 1, so that the sector gear is continuously engaged with and disengaged from the first transmission gear 5 by continuously pushing and pulling the rotating handle, thereby realizing the effect of continuously opening or closing the valve in the same direction. Specifically, the fixed handle 1 is provided with a long hole 108 at the front end, the long hole 108 is distributed along the length direction of the fixed handle, a rotating pin 201 on the rotating handle 2 sequentially passes through the sector gear, the rotating handle 2 and the long hole 108, and the rotating pin 201 can rotate in the long hole 108 and slide along the length direction of the long hole 108, so that the sector gear can be moved up and down by the rotating handle 2 to realize the engagement and disengagement with the first transmission gear 5. In addition, the fixed handle 1 is also provided with a first rotating shaft hole 106 and a second rotating shaft hole 107 at the front end, the first rotating shaft 4 and the second rotating shaft 7 are respectively connected with the first rotating shaft hole 106 and the second rotating shaft hole 107 for rotation, and the second rotating shaft hole 107, the first rotating shaft hole 106 and the long hole 108 are sequentially distributed from front to back at the front end of the fixed handle 1.

[0050] The fixed handle 1 and the rotating handle 2 both adopt telescopic rod structure, and the telescopic structures of the two are the same, so in the embodiment, the fixed handle 1 is described, and the telescopic structure of the rotating handle 2 will not be described in detail. Specifically, as shown in Figures 2-4 The fixed handle 1 is composed of a fixed rod 101 and a movable rod 102, and a rubber sheath 103 is arranged on the outer surface of the fixed rod 101 for convenient operation and holding. The movable rod 102 is slidably connected to the inside of the fixed rod 101, and the first rotating shaft hole 106, the second rotating shaft hole 107 and the long hole 108 are all arranged on the movable rod 102. The fixed rod 101 and the movable rod 102 are respectively provided with adjustment holes 104 and fixed holes 105 which are correspondingly distributed, and when it is necessary to adjust the length of the fixed handle 1, the movable rod 102 is adjusted to the appropriate length by sliding up and down in the fixed rod 101, and then the fixed handle 1 can be fastened by a fixed bolt passing through the adjustment holes 104 and the fixed holes 105 and through a nut.

[0051] The hinge point of the fixed handle 1 and the rotating handle 2 is arranged at the front end position, and the two are hinged to drive the fixed gripper 9 to rotate through the gear transmission assembly, forming a labor-saving lever structure; the fixed handle 1 and the rotating handle 2 adopt an extension rod structure, and the appropriate handle length can be selected according to the actual situation to adapt to the opening and closing of the valve hand wheel 10 of different heights, and when the valve hand wheel 10 is higher, the power arm of the fixed handle 1 and the rotating handle 2 is longer, and the operation is more labor-saving.

[0052] As shown in Figure 6 , the fixed gripper 9 is composed of a fixed plate 901 and a clamping jaw 902, the clamping jaw 902 is provided with three groups, the three groups of clamping jaws 902 are uniformly distributed along the circumferential direction of the fixed plate 901, and one end of the clamping jaw 902 is hingedly connected with the fixed plate 901, and the other end is provided with a trapezoidal groove 903 on the lower end face, that is, an open groove with large lower end and small upper end is adopted to facilitate cooperation with the rim of the valve hand wheel 10, and a friction surface 904 is further arranged on the inner side wall of the trapezoidal groove 903 to improve the friction between the clamping jaw 902 and the valve hand wheel 10. The friction surface 904 can adopt a rubber friction pad or a silica gel friction strip or a concave-convex texture structure; in addition, a spring 905 is further connected between the clamping jaw 902 and the inner side of the fixed plate 901, by arranging the spring 905, the clamping jaw 902 can rotate with the fixed plate 901 within a certain range, thereby moving in and out along the radial direction of the valve hand wheel 10, and moving up and down along the height direction, thereby being able to clamp and fix the valve hand wheel 10 of different diameters within a certain range.

[0053] Of course, the clamping jaw 902 in the fixed gripper 9 can also be fixedly connected with the fixed plate 901, in this structure state, the spring 905 is not required to be arranged.

[0054] The device is suitable for opening and closing of the valve in the form of an internal screw rod, as shown in Figure 7 and Figure 8 , the valve hand wheel 10 on the pipeline 11 is about 4m high from the ground, when the device is used to open or close the raised valve hand wheel 10, the operator stands below the valve hand wheel 10, holds the fixed handle 1 and the rotating handle 2 with both hands, first buckles the fixed gripper 9 on the rim of the valve hand wheel 10, if the diameter of the valve hand wheel 10 is larger than the outer diameter of the fixed gripper 9, at this time, at least one group of clamping jaws 902 is first clamped with the rim of the valve hand wheel 10 through the trapezoidal groove 903, if Figure 7As a view reference, at this time, the fixed gripper 9 is tilted and pressed to the left side of the valve handle 10, so that the clamping jaw 902 is clamped through the spring 905 to extend a certain length, so that the remaining group of clamping jaws 902 is clamped and fixed with the rim of the valve handle 10; after the valve handle 10 is fixed by the fixed gripper 9, at this time, the rotating handle 2 is pushed upward, so that the rotating pin 201 on the rotating handle 2 is located at the uppermost end of the long hole 108, at this time, the driving gear 3, i.e. the sector gear, is engaged with the first transmission gear 5, and the sector gear can be driven to rotate by rotating the rotating handle 2, so that the first rotating shaft 4 is driven to rotate by the first transmission gear 5, the second transmission gear 6 is driven to rotate by the first rotating shaft 4, the third transmission gear 8 is driven to rotate by the second transmission gear 6, and then the second rotating shaft 7 and the fixed gripper 9 are driven to rotate by the third transmission gear 8, so as to realize the rotation of the valve handle 10; when the sector gear rotates to disengage or approach the first transmission gear 5, the rotating handle 2 is slid downward along the long hole 108, so that the sector gear and the first transmission gear 5 are disengaged, and the rotating handle 2 is restored to the angle state before the sector gear and the first transmission gear 5 are engaged for the first time, then the rotating handle 2 is moved upward, so that the sector gear and the first transmission gear 5 are kept in engagement, and the rotating handle 2 is continuously rotated to drive the first transmission gear 5 to rotate by the sector gear, and the sector gear and the first transmission gear 5 are continuously engaged and disengaged by continuously pushing and pulling the rotating handle 2, so as to realize uninterrupted opening or closing of the valve handle 10 in the same direction.

[0055] The above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced by equivalents; and these modifications or replacements will not make the essence of the corresponding technical solutions deviate from the protection scope of the technical solutions of the embodiments of the present application.

Claims

1. A manual auxiliary tool suitable for operating handwheels of valves at heights, characterized in that, The utility model relates to a valve handwheel locking device, including: The fixed handle is rotatably connected with a first driven gear, a second driven gear and a third driven gear at the front end, the first driven gear and the second driven gear are coaxially fixedly connected, and the third driven gear is meshingly connected with the second driven gear for transmission; The rotating handle is rotatably connected with the front end of the fixed handle, and a driving gear is further fixedly connected to the front end of the rotating handle, and the driving gear is meshingly connected with the first driving gear for transmission; Further including a fixed gripper, the fixed gripper is fixedly connected with the third driven gear, and is used for clamping with the valve handwheel; The driving gear is a sector gear, the front end of the fixed handle is further provided with a long hole with a length along the length direction of the fixed handle, a rotating pin is fixedly connected to the rotating handle and is matched with the long hole for rotation, and the rotating pin can slide along the length direction of the long hole; The number of teeth of the driving gear is greater than that of the first driven gear, the number of teeth of the second driven gear is greater than that of the third driven gear, and the total transmission ratio is less than 1.

2. The hand tool for assisting in opening and closing a valve from an elevated position according to claim 1, wherein The fixed gripper includes a fixed plate and a plurality of sets of clamping jaws, the plurality of sets of clamping jaws are uniformly distributed along the circumferential direction of the fixed plate, and the end of the clamping jaw is provided with a trapezoidal groove for clamping with the rim of the valve handwheel.

3. The hand tool for use with overhead valve wheel switches according to claim 2, wherein, One end of the clamping jaw is hingedly connected with the fixed plate, and a spring is connected between the clamping jaw and the fixed plate.

4. The hand tool for use with overhead valve wheel switches of claim 2, wherein, A friction surface matched with the rim of the valve handwheel is arranged on the inner side wall of the trapezoidal groove.

5. The hand aid for high valve wheel switch according to claim 1, characterized in that, The fixed handle and the rotating handle are both telescopic rods, and the hinge point of the fixed handle and the rotating handle is located at the movable part of the telescopic rod.

6. The hand tool for use with overhead valve wheel switches according to claim 5, wherein, A rubber sheath is arranged on the surface of the fixed part of the fixed handle and the rotating handle.

7. The hand aid for high valve wheel switch according to claim 1, characterized in that, The front end of the fixed handle is rotatably connected with a first rotating shaft, and the first driven gear and the second driven gear are coaxially fixedly connected with the first rotating shaft.

8. The hand tool for use with overhead valve wheel switches of claim 1, wherein, The front end of the fixed handle is rotatably connected with a second rotating shaft, the third driven gear is coaxially fixedly connected with the second rotating shaft, and the fixed gripper is fixedly connected with the second rotating shaft.

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