A kind of relay maintenance tool

Abstract

The present invention discloses a servomotor maintenance tool, which relates to the field of servomotor maintenance equipment. The technical scheme is as follows: the fixed tool is used for disassembling and assembling a ball valve servomotor, and a shaper is used for shaping a piston seal. The fixed tool comprises a ground connection plate fixedly connected to the ground by chemical bolts, a supporting bottom plate is arranged on the ground connection plate, a supporting cylinder is arranged on the supporting bottom plate, and a supporting top plate is arranged on the supporting cylinder; the ground connection plate is in the shape of a circular plate, and a plurality of connection holes and mounting holes are arranged in a circumferential array on the plate body of the ground connection plate, and the mounting holes and the connection holes are arranged alternately, the connection holes are threaded holes, and the mounting holes are step holes; a central hole is arranged through the middle of the plate body of the ground connection plate, and a plurality of mounting holes are arranged in an array on the plate body outside the central hole. The beneficial effects of the present invention are as follows: the structure is simple, and the use is convenient. With the aid of this set of tool, the maintenance time of the servomotor is reduced, and the equipment maintenance efficiency is greatly improved.

Description

Technical Field

[0001] The invention relates to the field of relay maintenance equipment, and in particular to a relay maintenance tool. Background Art

[0002] The ball valve servo is a hydraulic device that transmits operating torque hydraulically to perform mechanical operations. It is mainly composed of a servo cylinder, a servo piston rod, and a crank arm hinged to the servo piston rod. The servo piston rod drives the crank arm to rotate, thereby adjusting the ball valve opening.

[0003] When the unit runs for a long time, the fastening connectors of the ball valve servo will loosen due to vibration and other reasons, and the fatigue damage of parts and aging of seals will cause inaccurate movement, sticking, leakage and other phenomena of the servo, affecting the stable operation of the ball valve. It is necessary to dismantle and repair the servo.

[0004] The ball valve servomotor used in the underground plant has a height of 4424mm in the fully closed position, a full stroke of 2495mm in the fully open position, a maximum length of 6919mm in the fully open position, and weighs 10 tons. Due to the heavy weight of the servomotor, it is difficult to overhaul and disassemble the servomotor, which occupies the bridge crane and limited overhaul space for a long time during overhaul, and cannot effectively utilize time, space, and materials. Summary of the invention

[0005] In view of the above technical problems, the present invention provides a relay maintenance tool.

[0006] The technical solution is as follows: it includes a fixing tool for disassembling and assembling the ball valve servomotor, and a shaper for shaping the piston seal, wherein the fixing tool includes a ground connection plate fixedly connected to the ground by chemical bolts, a supporting bottom plate is arranged on the ground connection plate, a supporting cylinder is arranged on the supporting bottom plate, and a supporting top plate is arranged on the supporting cylinder;

[0007] The ground connection plate is in the shape of a circular plate, and a plurality of connection holes and mounting holes are arranged in an array on the plate body of the ground connection plate. The mounting holes and the connection holes are arranged alternately, the connection holes are threaded holes, and the mounting holes are stepped holes;

[0008] A central hole is provided in the middle of the plate body of the ground connection plate, and a plurality of mounting holes are arranged in an array on the plate body outside the central hole.

[0009] Preferably, the support base plate is in the shape of a circular plate, a plurality of positioning holes are arranged in a circumferential array on the plate body of the support base plate, the positioning holes correspond to the connecting holes, and the support base plate is fixedly connected by bolts penetrating the positioning holes and the connecting holes;

[0010] A plurality of fixing holes are arranged in a circumferential array in the middle of the plate body of the supporting bottom plate. The fixing holes are step holes, and the larger ends of the fixing holes face the ground connection plate.

[0011] Preferably, the support tube is cylindrical, and a plurality of blind holes are arranged in an array at both ends of the support tube, and the blind holes correspond to the fixing holes;

[0012] An internal thread is arranged on the inner wall of the blind hole, and the support tube is fixedly connected to the support base plate by bolts penetrating the fixing hole and the blind hole.

[0013] Preferably, the supporting top plate is in the shape of a rectangular plate, a supporting plate is fixedly arranged at each of the four corners of the supporting top plate, and two through-going transfer holes are respectively provided on the plate body of each supporting plate;

[0014] A plurality of bolt holes are arranged in an array on the circumference of the plate body of the supporting top plate, wherein the bolt holes are step holes, the large ends of the bolt holes are away from the supporting tube, and the bolt holes correspond to the blind holes;

[0015] The supporting top plate is fixedly connected to the supporting cylinder by bolts penetrating the bolt holes.

[0016] Preferably, a rectangular channel is opened in the middle of the supporting top plate.

[0017] Preferably, a positioning platform is provided in the middle of the upper surface of the supporting base plate, and the outer diameter of the positioning platform corresponds to the inner diameter of the supporting tube;

[0018] A plurality of penetrating weight-reducing holes are arranged in an array on the plate body of the supporting bottom plate.

[0019] Preferably, a through groove is provided on the wall of the support tube.

[0020] Preferably, the shaper comprises a shaping cylinder in a circular cylindrical shape, the inner wall of the shaping cylinder is inclined, the upper end of the shaping cylinder is a large end, and the upper end of the inner wall of the shaping cylinder is chamfered.

[0021] Preferably, a plurality of nuts are arranged in an array on the outer side of the cylinder wall of the shaping cylinder, and the axes of the nuts are parallel to the axis of the shaping cylinder.

[0022] The technical solution provided by the embodiment of the present invention has the following beneficial effects: simple structure and easy use. With the help of this set of tooling, the maintenance time of the relay is reduced, and the equipment maintenance efficiency is greatly improved. All components of the device can be disassembled, which is convenient for transportation in the underground corridor of the energy storage power station. At the same time, when the device is not in use, the components can be disassembled for easy storage, reducing the floor space. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1It is a schematic diagram of the use status of the fixing tooling according to an embodiment of the present invention.

[0024] Figure 2 Schematic diagram of the use status of the shaper according to an embodiment of the present invention.

[0025] Figure 3 It is a schematic diagram of the overall structure of the fixing tooling according to an embodiment of the present invention.

[0026] Figure 4 Schematic diagram of the structure of the ground connection plate according to an embodiment of the present invention.

[0027] Figure 5 Schematic diagram of the supporting base structure of an embodiment of the present invention.

[0028] Figure 6 It is a schematic diagram of the support tube structure of an embodiment of the present invention.

[0029] Figure 7 Schematic diagram of the supporting top plate structure of an embodiment of the present invention.

[0030] Among them, the figure markings are: 1. fixing tool; 1-1. ground connecting plate; 1-11. connecting hole; 1-12. mounting hole; 1-13. center hole; 1-2. supporting bottom plate; 1-21. positioning hole; 1-22. fixing hole; 1-23. weight reduction hole; 1-3. supporting cylinder; 1-31. blind hole; 1-32. through groove; 1-4. supporting top plate; 1-41. support plate; 1-42. adapter hole; 1-43. bolt hole; 1-44. channel; 2. shaper; 2-1. shaping cylinder; 2-2. nut; 20. relay; 21. piston. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. Of course, the specific embodiments described here are only used to explain the present invention and are not used to limit the present invention.

[0032] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0033] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying 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 present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0034] In the description of the invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the invention can be understood according to specific circumstances.

[0035] Example 1

[0036] See also Figures 1 to 7 The present invention provides a servomotor maintenance tool, comprising a fixing tool 1 for disassembling and assembling a ball valve servomotor 20, and a shaper 2 for shaping a piston seal, wherein the fixing tool 1 comprises a ground connection plate 1-1 fixedly connected to the ground by chemical bolts, a supporting bottom plate 1-2 is arranged on the ground connection plate 1-1, a supporting cylinder 1-3 is arranged on the supporting bottom plate 1-2, and a supporting top plate 1-4 is arranged on the supporting cylinder 1-3;

[0037] The ground connection plate 1-1 is in the shape of a circular plate. A plurality of connection holes 1-11 and mounting holes 1-12 are arranged in an array on the plate body of the ground connection plate 1-1. The mounting holes 1-12 and the connection holes 1-11 are arranged alternately. The connection holes 1-11 are threaded holes, and the mounting holes 1-12 are step holes.

[0038] A central hole 1-13 is provided in the middle of the plate body of the ground connection plate 1-1, and a plurality of mounting holes 1-12 are arranged in an array on the plate body outside the central hole 1-13.

[0039] Before using this device, a foundation pit with a diameter of 1500mm needs to be excavated at the home maintenance site. The depth is set according to the actual situation of the factory building. The foundation pit is filled and leveled with concrete, and the ground connection plate 1-1 is fixed to the concrete using M22*300 chemical anchor bolts. The chemical anchor bolts penetrate the installation holes 1-12.

[0040] The support base plate 1-2 is in the shape of a circular plate. A plurality of positioning holes 1-21 are arranged in an array on the upper circumference of the plate body of the support base plate 1-2. The positioning holes 1-21 correspond to the connection holes 1-11. The support base plate 1-2 is fixedly connected by bolts penetrating the positioning holes 1-21 and the connection holes 1-11.

[0041] A plurality of fixing holes 1-22 are arranged in a circumferential array in the middle of the plate body of the supporting base plate 1-2. The fixing holes 1-22 are step holes, and the larger end of the fixing hole 1-22 is connected to the ground plate 1-1.

[0042] The supporting bottom plate 1-2 plays a transition role, and contacts with the ground connecting plate 1-1 downwardly, and is connected with the supporting tube 1-3 upwardly.

[0043] The support tube 1-3 is cylindrical, and a plurality of blind holes 1-31 are arranged in an array at both ends of the support tube 1-3, and the blind holes 1-31 correspond to the fixing holes 1-22;

[0044] An internal thread is arranged on the inner wall of the blind hole 1-31, and the support tube 1-3 is fixedly connected to the support base plate 1-2 by bolts penetrating the fixing hole 1-22 and the blind hole 1-31.

[0045] The supporting top plate 1-4 is in the shape of a rectangular plate, and a support plate 1-41 is fixedly arranged at each of the four corners of the supporting top plate 1-4. Two through-going transfer holes 1-42 are respectively provided on the plate body of each support plate 1-41;

[0046] A plurality of bolt holes 1-43 are arranged in a circumferential array on the plate body of the supporting top plate 1-4. The bolt holes 1-43 are stepped holes. The large ends of the bolt holes 1-43 are away from the supporting tube 1-3. The bolt holes 1-43 correspond to the blind holes 1-31.

[0047] The support top plate 1-4 is fixedly connected to the support tube 1-3 by bolts passing through the bolt holes 1-43.

[0048] A rectangular channel 1-44 is opened in the middle of the supporting top plate 1-4.

[0049] A positioning platform is provided in the middle of the upper surface of the supporting base plate 1-2, and the outer diameter of the positioning platform corresponds to the inner diameter of the supporting cylinder 1-3;

[0050] A plurality of penetrating weight-reducing holes 1-23 are arranged in an array on the plate body supporting the base plate 1-2.

[0051] A through groove 1-32 is provided on the wall of the support tube 1-3.

[0052] The shaper 2 comprises a shaping cylinder 2-1 in a circular cylindrical shape. The inner wall of the shaping cylinder 2-1 is inclined, the upper end of the shaping cylinder 2-1 is a large end, and the upper end of the inner wall of the shaping cylinder 2-1 is chamfered.

[0053] A plurality of nuts 2-2 are arranged in an array on the outer side of the cylinder wall of the shaping cylinder 2-1, and the axis of the nut 2-2 is parallel to the axis of the shaping cylinder 2-1.

[0054] When the present invention is used, the support base plate 1-2, the support tube 1-3 and the support top plate 1-4 are first assembled, and then the support base plate is fixed to the ground connection plate by bolts passing through the positioning hole 1-21 and the connection hole 1-11, and the device is firmly fixed to the ground.

[0055] When disassembling the servomotor 20, the servomotor 20 is hoisted to the top of the device using a crane.

[0056] The method of using the device is as follows: (1) first remove the lower end cover of the relay 20: place the relay with 8 bolts removed from the lower end cover (remove 2 bolts at intervals of 2 bolts) on the fixed fixture 1; connect the relay 20 to the supporting top plate 1-4 of the fixed fixture 1; remove the remaining bolts on the lower end cover of the relay; lift the relay and remove the lower end cover of the relay.

[0057] (2) Then insert the positioning plate: The positioning plate is in the shape of a circular plate, and six limiting holes are arranged in an array on the plate body of the positioning plate. The limiting holes correspond to the bolt holes 1-43 of the support top plate 1-4. The positioning plate forms a stopper with the support top plate 1-4 to play a positioning role. When the cylinder wall of the relay 20 falls on the support top plate 1-4, it can be quickly positioned. The six holes evenly distributed on the positioning plate, the holes on the piston seat, and the bolt holes 1-43 of the support top plate 1-4 have the same graduated circles, which can achieve the function of fixing the piston.

[0058] (3) Fix the cylinder wall of the servomotor 20 and erect the servomotor: hoist the piston of the servomotor 20 together with the piston rod and the cylinder wall as a whole back to the fixing fixture 1, and fix the cylinder wall of the servomotor 20 to the fixing fixture 1 with bolts through the adapter holes 1-42 on the supporting top plate 1-4. At this time, the servomotor 20 has been erected on the fixing fixture 1 and is tightly connected to the ground through the fixing fixture 1.

[0059] (4) Dismantle the upper cover of the relay 20: Fix the piston 21 at the bottom of the fixing fixture 1 through the positioning plate. Since the piston of the relay 20 is fixed, the lifting head of the relay 20 can rotate smoothly. After dismantling the lifting head of the relay 20, dismantle the upper cover of the relay 20 and lift it away.

[0060] (5) Lifting the piston rod and piston 21 of the relay: Hang a guide chain on the bridge crane hook and use the guide chain to screw the lifting head into the piston rod. The lifting head is heavy, about 800 kg, and the piston rod has a fine thread. Apply grease before screwing it in. When aligning the threads for the first time, be careful to prevent the threads from being damaged. Use the guide chain to slowly lower the lifting head.

[0061] Screw the lifting head onto the piston rod, lift the piston rod and piston, and make sure to loosen the bolts fixing the piston 21 before lifting.

[0062] (6) Disassemble the piston 21 and replace the seal: Loosen the fixing bolts between the cylinder wall of the relay 20 and the supporting top plate 1-4, and lift the cylinder wall of the relay.

[0063] (7) Disassemble the piston and replace the seal: Remove the locking bolt at the end of the relay piston 21 and unscrew the piston 21 from the piston rod. The disassembly inspection found that there were scratches on the bearing of the piston 21, and the sealing ring between the bearing of the piston 21 and the piston seat failed and deformed, resulting in reduced sealing performance and oil leakage. At this time, the piston ring needs to be replaced. In the actual replacement process, since the piston ring is made of hard material and has a larger size after installation, the piston ring is easily cut during the reinstallation of the piston. At this stage, in order to avoid the above problems, the piston ring needs to be shaped after installation. The shaping method is that the operator manually knocks or taps it to reduce the outer diameter of the piston ring. The operation method is rough and the shaping is uneven, which easily leads to the phenomenon of uneven outer diameter of the piston ring, affecting the sealing effect of the piston ring.

[0064] When installing the piston ring, it is necessary to use a shaper 2 to shape the piston ring so that the size of the piston ring is reduced and the piston 21 can smoothly enter the cylinder wall.

[0065] The operator installs the piston ring on the piston 21, and lifts the piston 21 to the top of the device through the lifting equipment. During the falling process of the piston 21, the sealing ring gradually shrinks under the action of the inner wall of the shaping cylinder 2-1. After being shaped by the device, the size of the sealing ring shrinks, ensuring that the piston 21 enters the cylinder wall smoothly.

[0066] When installing the relay 20, the installation of the relay can be achieved by simply reversing the above steps.

[0067] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A servomotor maintenance tool, comprising a fixing tool (1) for disassembling and assembling a ball valve servomotor (20), and a shaping device (2) for shaping the seal of a piston (21), characterized in that: The fixing tool (1) comprises a ground connection plate (1-1) fixedly connected to the ground via chemical bolts, a support base plate (1-2) being arranged on the ground connection plate (1-1), a support cylinder (1-3) being arranged on the support base plate (1-2), and a support top plate (1-4) being arranged on the support cylinder (1-3); The ground connection plate (1-1) is in the shape of a circular plate, and a plurality of connection holes (1-11) and mounting holes (1-12) are arranged in an array on the plate body of the ground connection plate (1-1), the mounting holes (1-12) and the connection holes (1-11) are arranged alternately, the connection holes (1-11) are threaded holes, and the mounting holes (1-12) are stepped holes; A central hole (1-13) is provided in the middle of the plate body of the ground connection plate (1-1), and a plurality of mounting holes (1-12) are arranged in an array on the plate body outside the central hole (1-13); The support base plate (1-2) is in the shape of a circular plate, a plurality of positioning holes (1-21) are arranged in a circumferential array on the plate body of the support base plate (1-2), the positioning holes (1-21) correspond to the connection holes (1-11), and the support base plate (1-2) is fixedly connected by bolts penetrating the positioning holes (1-21) and the connection holes (1-11); A plurality of fixing holes (1-22) are arranged in a circumferential array in the middle of the plate body of the supporting bottom plate (1-2), the fixing holes (1-22) being step holes, and the larger ends of the fixing holes (1-22) face the ground connection plate (1-1); The support tube (1-3) is in the shape of a cylindrical tube, and a plurality of blind holes (1-31) are arranged in an array at both ends of the support tube (1-3), and the blind holes (1-31) correspond to the fixing holes (1-22); An internal thread is provided on the inner wall of the blind hole (1-31), and the support cylinder (1-3) is fixedly connected to the support base plate (1-2) via a bolt that penetrates the fixing hole (1-22) and the blind hole (1-31); The supporting top plate (1-4) is in the shape of a rectangular plate, and a support plate (1-41) is fixedly arranged at each of the four corners of the supporting top plate (1-4), and two through-going transfer holes (1-42) are respectively provided on the plate body of each of the support plates (1-41); A plurality of bolt holes (1-43) are arranged in a circumferential array on the plate body of the supporting top plate (1-4), the bolt holes (1-43) are step holes, the large ends of the bolt holes (1-43) are away from the supporting tube (1-3), and the bolt holes (1-43) correspond to the blind holes (1-31); The supporting top plate (1-4) is fixedly connected to the supporting cylinder (1-3) via bolts penetrating the bolt holes (1-43); The shaper (2) comprises a shaping cylinder (2-1) in the shape of a circular cylinder, the inner wall of the shaping cylinder (2-1) is inclined, the upper end of the shaping cylinder (2-1) is a large end, and the upper end of the inner wall of the shaping cylinder (2-1) is chamfered.

2. The servomotor maintenance tool according to claim 1, characterized in that: A rectangular channel (1-44) is provided in the middle of the supporting top plate (1-4).

3. The servomotor maintenance tool according to claim 1, characterized in that: A positioning platform is provided in the middle of the upper surface of the supporting base plate (1-2), and the outer diameter of the positioning platform corresponds to the inner diameter of the supporting cylinder (1-3); A plurality of penetrating weight-reducing holes (1-23) are arranged in an array on the plate body of the supporting bottom plate (1-2).

4. The servomotor maintenance tool according to claim 1, characterized in that: A through groove (1-32) is provided on the wall of the support cylinder (1-3).

5. The servomotor maintenance tool according to claim 1, characterized in that: A plurality of nuts (2-2) are arranged in an array on the outer side of the cylinder wall of the shaping cylinder (2-1), and the axes of the nuts (2-2) are parallel to the axis of the shaping cylinder (2-1).

Images