An automatic cycle running-in tool for a three-position switch

Abstract

The present invention provides an automatic cycle running-in tool for a three-position switch, belonging to the technical field of switch running-in devices. The tool for running-in a three-position switch comprises: a transport module, on which a three-position switch is arranged; a support frame, arranged on one side of the three-position switch; a connecting sleeve, having two, both rotatably and slidably connected to the support frame, the connecting sleeve being slidably connected to a moving sleeve, the moving sleeve being detachably connected to a driving sleeve, and a first elastic member being fixedly connected between the moving sleeve and the adjacent connecting sleeve. The present invention connects the three-position switch to be tested to a circuit through a DC contactor to simulate the working state of the three-position switch in actual use, and uses an intelligent multimeter to perform real-time detection of the voltage at both ends of the three-position switch in the running-in state, and judges the running-in condition of the switch through the detection result.

Description

Technical Field

[0001] The invention relates to the technical field of switch running-in devices, and in particular to an automatic cycle running-in tool for a three-position switch. Background Art

[0002] A three-position switch is an electrical component that has both the functions of an isolating switch and a grounding switch. It is widely used in major power systems. If a newly produced switch is put into use without running-in, the oxide layer and other impurities on the surface of the switch contacts will reduce the contact area of ​​the switch contacts, thereby increasing the contact resistance of the switch, causing arcs and sparks when the current passes through the switch, causing local overheating and accelerating the wear and aging of the contacts. Therefore, after the switch is produced, it is necessary to run-in the switch first to remove the oxide layer on the surface of the switch contacts before it can be put into use.

[0003] At present, in the process of running-in of the three-position switch, a DC contactor is usually used to connect the three-position switch to the circuit to simulate the working state of the switch in actual use. Then, a driving sleeve is set on the driving shaft of the three-position switch, and then the driving sleeve is controlled by a motor to drive the driving shaft of the three-position switch to rotate repeatedly, so that the three-position switch is opened and closed many times, thereby achieving the purpose of removing the oxide layer on the surface of the switch. At the same time, an intelligent multimeter is used to detect the voltage at both ends of the switch during the running-in process, and the reading of the intelligent multimeter is used to judge whether the switch is running-in. In the production process of the three-position switch, The contact part between the driving shaft and the driving sleeve of the three-position switch is usually processed into an irregular shape or a spline shape. In the process of producing the three-position switch, the driving shafts of different three-position switches are in different states (that is, the driving shafts of the three-position switches are misaligned at a certain angle). Therefore, in the process of running-in of the three-position switch, in order to reduce the risk of electric shock to the staff, it is necessary to adjust the position of the driving sleeve in advance according to the specific state of the part to ensure that the driving sleeve can be mounted on the driving shaft of the three-position switch before the switch can be connected to the circuit. The overall process is relatively cumbersome, which affects the running-in process of the three-position switch. Summary of the invention

[0004] In order to overcome the shortcomings mentioned in the above background technology, the present invention provides an automatic cycle running-in tool for a three-position switch.

[0005] The technical solution of the present invention is: an automatic cycle running-in tool for a three-position switch, comprising:

[0006] A transport module, wherein a three-position switch is provided on the transport module, two drive shafts are provided on one side of the three-position switch, and a DC contactor electrically connected to the three-position switch is provided on the transport module;

[0007] A support frame, arranged on one side of the three-position switch;

[0008] The connecting sleeves have two, both of which are rotatably and slidably connected to the support frame, and the support frame is provided with two power modules for driving the adjacent connecting sleeves to rotate, and the connecting sleeves are slidably connected to a moving sleeve, and the moving sleeve is detachably connected to a driving sleeve that cooperates with an adjacent driving shaft on the three-position switch, and a first elastic member is fixedly connected between the moving sleeve and the adjacent connecting sleeve;

[0009] There are two electric push rods, both of which are fixed to the support frame, and the telescopic ends of the electric push rods are fixed to a first connecting ring, and a rotating ring fixed to the adjacent connecting sleeve is rotatably connected inside the first connecting ring;

[0010] An intelligent multimeter, fixedly connected to one side of the support frame, for detecting the voltage at both ends of the three-position switch;

[0011] The driving components include two driving components, which are respectively arranged between adjacent connecting sleeves and adjacent moving sleeves, and are used to drive the adjacent connecting sleeves and adjacent moving sleeves to rotate synchronously.

[0012] Furthermore, the driving component comprises:

[0013] A second connecting ring, fixedly connected to the adjacent moving sleeve;

[0014] A driving rod, rotatably connected to the second connecting ring, and the driving rod is slidably connected to the adjacent rotating ring, and a transmission module is provided between the driving rod and the adjacent moving sleeve;

[0015] The driving ball is fixedly connected to the adjacent rotating ring, and the driving rod is provided with a limiting groove which cooperates with the driving ball.

[0016] Furthermore, the length of the upper limit groove of the driving rod projected on the horizontal plane is not greater than the maximum compression length of the first elastic member.

[0017] Furthermore, it also includes:

[0018] The protective components are provided with two, and are respectively arranged on adjacent connecting sleeves. The protective components are used to protect the connecting sleeves. The protective components include:

[0019] A connecting shaft, rotatably connected to a side of the adjacent connecting sleeve away from the first elastic member thereon, and the connecting shaft is transmission-connected to an adjacent power module;

[0020] A movable column, wherein the connecting shaft is provided with a slide groove, the movable column slides in the slide groove of the connecting shaft, a pressure detector is installed in the slide groove of the connecting shaft, and a second elastic member is provided between the pressure detector and the movable column;

[0021] A limiting ball is connected to a side of the movable column away from the second elastic member, and the limiting ball is limitedly matched with the adjacent connecting sleeve.

[0022] Furthermore, the protection component also includes:

[0023] A fixing ring, rotatably connected to a side of the connecting sleeve away from the first elastic member thereon;

[0024] An extrusion ring, rotatably connected to the connecting shaft, the extrusion ring being located inside the fixing ring;

[0025] A limiting post, wherein the connecting shaft is provided with a liquid storage cavity, the limiting post slides in the liquid storage cavity, and the limiting post cooperates with the extrusion ring in a limiting manner;

[0026] A third elastic member is disposed between the limiting column and the connecting shaft;

[0027] There are two trigger components, which are respectively arranged on adjacent connecting sleeves, and the trigger components are used to change the positions of adjacent limiting columns.

[0028] Furthermore, the trigger component includes:

[0029] The liquid storage capsules are symmetrically distributed and are both fixed to the adjacent fixing rings, and the two liquid storage capsules are both extrusion-matched with the adjacent extrusion rings;

[0030] A liquid storage shell, fixedly connected to one side of the adjacent connecting shaft, the liquid storage shell is connected to both of the two liquid storage bags through a hose, and the liquid storage shell is connected to the adjacent liquid storage cavity through a hose;

[0031] A piston rod is slidably connected to the liquid storage shell, and a fourth elastic member is fixedly connected between the piston rod and the liquid storage shell;

[0032] A pull rope, fixedly connected to a side of the adjacent moving column away from the limiting ball thereon, and the pull rope is located in the connecting shaft;

[0033] A limit plate is slidably connected to the adjacent connecting shaft, the limit plate is limitedly matched with the piston rod, the limit plate is fixedly connected to the pull rope, and a fifth elastic member is fixedly connected between the limit plate and the adjacent connecting shaft.

[0034] Furthermore, the central axis of the extrusion ring coincides with the central axis of the adjacent fixing ring.

[0035] Furthermore, the elastic coefficient of the third elastic member is equal to the elastic coefficient of the fourth elastic member, so as to make the liquid in the liquid storage bag flow into the adjacent liquid storage shell and the adjacent liquid storage cavity at the same time.

[0036] Furthermore, there is friction damping between the fixing ring and the connecting sleeve.

[0037] Furthermore, the elastic coefficient of the fifth elastic member is greater than the elastic coefficient of the adjacent second elastic member.

[0038] Compared with the prior art, the present invention has at least the following advantages: the present invention connects the three-position switch to be tested to the circuit through a DC contactor to simulate the working state of the three-position switch in actual use, and uses an intelligent multimeter to perform real-time detection of the voltage across the three-position switch in the running-in state, and determines the running-in condition of the switch based on the detection results.

[0039] The movable sleeve drives the driving sleeve to rotate synchronously during the process of driving the driving sleeve to move horizontally, ensuring that the driving sleeve can be sleeved on the driving shaft of the three-position switch in the energized state. No additional action is required, making the whole process faster.

[0040] When the driving shaft of the three-position switch cannot rotate to a specified angle, the limit ball is disconnected from the connecting sleeve so that the connecting shaft no longer drives the connecting sleeve to rotate, thereby preventing the driving shaft and the connecting sleeve from being damaged by torque, which would affect the normal use of the three-position switch and the subsequent running-in work of other three-position switches from being affected.

[0041] By maintaining the limit ball in a position where it loses fit with the connecting sleeve, the power module drives the connecting shaft to idle, thereby preventing the moving column from being worn out due to repeated movement, which would affect the service life of this part. At the same time, it ensures that the same torque is applied to the drive shaft of the three-position switch during the subsequent running-in process, thereby ensuring the uniformity of the subsequent running-in of the three-position switch. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0043] Figure 2 It is a three-dimensional structural schematic diagram of the support frame and the connecting sleeve of the present invention;

[0044] Figure 3 It is a three-dimensional structural schematic diagram of the movable sleeve and the electric push rod of the present invention;

[0045] Figure 4 It is a three-dimensional structural cross-sectional view of the connecting sleeve of the present invention;

[0046] Figure 5 It is a three-dimensional structural cross-sectional view of the mobile sleeve of the present invention;

[0047] Figure 6 For the present invention Figure 4 A magnified view of the three-dimensional structure at center A;

[0048] Figure 7 It is a three-dimensional structural cross-sectional view of the connecting shaft of the present invention;

[0049] Figure 8 It is a schematic diagram of the three-dimensional structure of the fixing ring and the extrusion ring of the present invention.

[0050] In the accompanying drawings: 101, transport module, 1, three-position switch, 2, support frame, 3, connecting sleeve, 4, moving sleeve, 5, first elastic member, 6, electric push rod, 7, first connecting ring, 8, rotating ring, 81, smart multimeter, 9, second connecting ring, 10, driving rod, 11, driving ball, 12, connecting shaft, 13, moving column, 14, limiting ball, 15, second elastic member, 16, fixing ring, 17, squeezing ring, 18, liquid storage chamber, 19, limiting column, 20, third elastic member, 21, liquid storage capsule, 22, liquid storage shell, 23, piston rod, 24, fourth elastic member, 25, pull rope, 26, limiting plate, 27, fifth elastic member. DETAILED DESCRIPTION

[0051] The above scheme is further described below in conjunction with specific examples. It should be understood that these examples are used to illustrate the present application and are not limited to the scope of the present application. The implementation conditions adopted in the examples can be further adjusted according to the conditions of the specific manufacturer, and the implementation conditions not specified are usually the conditions in conventional experiments.

[0052] Embodiment 1: An automatic cycle running-in tool for a three-position switch, such as Figure 1-Figure 5 As shown, it includes a transport module 101, a three-position switch 1 is arranged on the transport module 101, two driving shafts are arranged on one side of the three-position switch 1, a DC contactor electrically connected to the three-position switch 1 is arranged on the transport module 101, and the DC contactor is connected to the main power supply through a wire; a support frame 2 is arranged on the left side of the three-position switch 1; a connecting sleeve 3 has two, both of which are rotatably and slidably connected to the support frame 2, and two power modules are arranged on the support frame 2, and the two power modules are respectively located on the left sides of adjacent connecting sleeves 3, and the power modules are used to drive the adjacent connecting sleeves 3 to rotate, and the right side of the connecting sleeve 3 is slidably connected to a moving sleeve 4, and the right side of the moving sleeve 4 is detachably connected There is a driving sleeve that cooperates with the adjacent driving shaft on the three-position switch 1, and a first elastic member 5 is fixedly connected between the movable sleeve 4 and the adjacent connecting sleeve 3; there are two electric push rods 6, both of which are fixedly connected to the support frame 2, and the telescopic end of the electric push rod 6 is fixedly connected to the first connecting ring 7, and a rotating ring 8 fixedly connected to the adjacent connecting sleeve 3 is rotatably connected in the first connecting ring 7; an intelligent multimeter 81 is fixedly connected to the front side of the support frame 2, and the intelligent multimeter 81 is used to detect the voltage at both ends of the three-position switch 1; there are two driving components, which are respectively arranged between the adjacent connecting sleeves 3 and the adjacent movable sleeves 4, and the driving components are used to drive the adjacent connecting sleeves 3 and the adjacent movable sleeves 4 to rotate synchronously.

[0053] In the above scheme, the transport module 101 is an existing device, which can be specifically selected by the staff when used. The electric slide rail and the electric slider are shown as examples in the figure. At the same time, the transport module 101 is connected to the remote control terminal network, and its specific work flow is no longer described in detail. At the same time, the DC contactor is an existing device, which is not shown in the figure, and its work flow is no longer described in detail. When used, the staff can electrically connect the DC contactor to the three-position switch 1 through a wire, and the DC contactor is initially in a disconnected state; the three-position switch 1 includes an isolating switch and a grounding switch, and both switches are provided with a driving shaft; the power module is also an existing device, and the figure shows a motor (the output shaft of the motor is disconnected when the power is off). The invention takes a three-position switch 1 as an example to demonstrate the invention, wherein the motor is connected to the remote control terminal network, and the input shaft of the reducer is connected to the output shaft of the motor through a coupling; the drive sleeve is an existing device, and when in use, the staff shall select it according to the shape of the drive shaft of the three-position switch 1; the first elastic member 5 is a spring; the electric push rod 6 is connected to the remote control terminal network; the rotating ring 8 is located on the right side of the adjacent connecting sleeve 3; the intelligent multimeter 81 is an existing device, and the detection pen thereon is not shown in the figure. The intelligent multimeter 81 is used to detect the voltage at both ends of the three-position switch 1, and two intelligent multimeters 81 can be selected in actual use to respectively detect the voltage at both ends of the isolating switch and the voltage at both ends of the grounding switch in the three-position switch 1.

[0054] In this embodiment, the connecting sleeve 3 is spline-connected to the output shaft of the coupling. In subsequent embodiments, the connecting sleeve 3 is connected to the output shaft of the coupling via the connecting shaft 12.

[0055] When the three-position switch 1 needs to be run-in, the staff fixes the three-position switch 1 to be run-in on the transport module 101, and connects the DC contactor on the transport module 101 with the contacts of the three-position switch 1 using a wire. Then, the transport module 101 transports the three-position switch 1 to be run-in to a designated location. The following describes the process of running-in the isolating switch (upper switch and upper drive shaft) of the three-position switch 1 as an example:

[0056] After the three-position switch 1 is transported to the designated position as described above, the staff fixes the detection pen on the intelligent multimeter 81 at the two ends of the isolating switch of the three-position switch 1 respectively. After the detection pen is fixed, the remote control terminal applies voltage to the DC contactor to close the DC contactor and connect the switch to the circuit, and performs real-time detection of the voltage at both ends of the isolating switch to simulate the working state of the three-position switch 1 in actual use, so as to make the detection result more accurate. Then the remote control terminal starts the upper electric push rod 6, and the telescopic end of the upper electric push rod 6 drives the connecting sleeve 3 to move to the right (the connecting sleeve 3 moves along the output shaft of the adjacent power module during the movement), until the driving sleeve on the moving sleeve 4 is set on the driving shaft on the upper side of the three-position switch 1, the remote control terminal shuts down the three-position switch 1, and then the remote control terminal starts the power module, and the power module drives the connecting sleeve 3 to rotate, thereby driving the moving sleeve 4 to rotate synchronously, and the driving sleeve on the moving sleeve 4 drives the driving shaft to rotate.

[0057] Until the drive shaft rotates a certain angle (the following description takes 120° as an example), that is, the isolating switch of the three-position switch 1 is closed (the two contacts of the isolating switch are in contact at this time), the remote control terminal controls the power module to rotate the movable sleeve 4 in the opposite direction, so that the movable sleeve 4 drives the drive shaft to rotate 120° in the opposite direction, that is, the isolating switch of the three-position switch 1 is disconnected (the two contacts of the isolating switch are separated at this time), and the running-in of the three-position switch 1 is completed. Subsequently, the above operation is repeated to continue the running-in of the isolating switch of the three-position switch 1. During the process, the smart multimeter 81 transmits the detected voltage to the remote control terminal in real time until the detected value is within the specified range, which means the running-in is completed. The remote control terminal then shuts down the above-mentioned device, and controls the transport module 101 to transport the three-position switch 1 after the running-in to the designated position. The staff then removes the three-position switch 1 after the running-in, and then fixes the next three-position switch 1 that needs running-in on the transport module 101, and transports it to the designated position by the transport module 101, and repeats the above-mentioned operation to run-in the next three-position switch 1.

[0058] In the process of the connecting sleeve 3 driving the movable sleeve 4 to move to the right, if the position of the driving sleeve on the movable sleeve 4 deviates from the angle of the driving shaft on the three-position switch 1, the driving sleeve on the movable sleeve 4 cannot be sleeved on the driving shaft adjacent to the three-position switch 1. Subsequently, in the process of the connecting sleeve 3 continuing to drive the movable sleeve 4 to move to the right, the movable sleeve 4 is blocked by the three-position switch 1 and moves to the left relative to the connecting sleeve 3, and the first elastic member 5 is compressed and stored, and at the same time, the driving assembly is driven by the movable sleeve 4 to work, and the driving assembly drives the connecting sleeve 3 and the movable sleeve 4 to rotate synchronously (the connecting sleeve 3 drives the output shaft of the power module to rotate synchronously during the rotation process) to change the angle of the driving sleeve on the movable sleeve 4, until the driving sleeve on the movable sleeve 4 is aligned with the driving shaft on the three-position switch 1, the connecting sleeve 3 can drive the movable sleeve 4 to continue to move to the right, to avoid the driving sleeve on the movable sleeve 4 and the driving shaft on the three-position switch 1 The angle deviation causes the driving sleeve to be unable to cooperate with the driving shaft and unable to drive the driving shaft to rotate, and even causes the driving shaft and the driving sleeve to be squeezed hard by the two, resulting in damage to the movable sleeve 4 and other parts connected thereto, affecting subsequent normal use.

[0059] Further, such as Figure 4-Figure 6 As shown, the driving assembly includes: a second connecting ring 9, fixedly connected to the adjacent movable sleeve 4; a driving rod 10, rotatably connected to the second connecting ring 9, and the driving rod 10 is slidingly connected to the adjacent rotating ring 8, and a transmission module is arranged between the driving rod 10 and the adjacent movable sleeve 4; a driving ball 11, fixedly connected to the adjacent rotating ring 8, and the driving rod 10 is provided with a limiting groove that cooperates with the driving ball 11.

[0060] In the above scheme, the specific position of the driving rod 10 can be freely adjusted, and is located on the upper side of the second connecting ring 9 in the figure; the transmission module is an existing device, and is shown in the figure by taking a spur gear set as an example, wherein the two gears in the spur gear set are respectively fixedly connected to the movable sleeve 4 and the driving rod 10; in the process of the two movable sleeves 4 moving to the right, the two movable sleeves 4 respectively drive the second connecting rings 9 and the driving rod 10 thereon to move synchronously, and the movable sleeve 4 drives the adjacent second connecting rings 9 and the adjacent driving rod 10 to move synchronously to the left relative to the adjacent connecting sleeve 3. During this process, the driving ball 11 slides in the limiting groove of the adjacent driving rod 10, so that the driving rod 10 is squeezed by the adjacent driving ball 11 and rotates, and the driving rod 10 drives the movable sleeve 4 to rotate synchronously through the adjacent transmission module, and at the same time, the movable sleeve 4 drives the adjacent driving rod 10 to rotate synchronously circumferentially through the transmission of the second connecting ring 9 thereon during the rotation process.

[0061] Further, such as Figure 5 As shown, the length of the upper limit groove of the driving rod 10 projected on the horizontal plane is not greater than the maximum compression length of the first elastic member 5.

[0062] In the above solution, the length of the upper limit groove on the driving rod 10 is limited to prevent the driving rod 10 from being unable to move to the left to the limit position relative to the adjacent connecting sleeve 3 .

[0063] Embodiment 2: Based on embodiment 1, Figure 4 , Figure 5 , Figure 7 and Figure 8 As shown, it also includes: a protective component, which has two parts and is respectively arranged on adjacent connecting sleeves 3. The protective component is used to protect the connecting sleeves 3. The protective component includes: a connecting shaft 12, which is rotatably connected to the side of the adjacent connecting sleeve 3 away from the first elastic member 5 thereon, and the connecting shaft 12 is transmission-connected to the adjacent power module; a moving column 13, the connecting shaft 12 is provided with a slide groove, the moving column 13 slides in the slide groove of the connecting shaft 12, a pressure detector is installed in the slide groove of the connecting shaft 12, and a second elastic member 15 is arranged between the pressure detector and the moving column 13; a limiting ball 14, the ball is connected to the side of the moving column 13 away from the second elastic member 15, and the limiting ball 14 is limitedly matched with the adjacent connecting sleeve 3.

[0064] In the above scheme, the connecting shaft 12 is located on the left side of the adjacent connecting sleeve 3, and the connecting shaft 12 is spline-connected to the output shaft of the adjacent power module, and the power module drives the adjacent connecting sleeve 3 to rotate synchronously through the adjacent connecting shaft 12; the pressure detector is an existing device, not shown in the figure, and the pressure detector is connected to the remote control terminal network; the second elastic member 15 is a spring, and initially, the limiting ball 14 is located in a position that matches the limiting position of the connecting sleeve 3 under the joint action of the adjacent second elastic member 15 and the movable column 13.

[0065] The following description assumes that the gate plates on the three-position switch 1 are in the open state as the initial position. After the gate plates are produced, there may be some processing burrs or slight deviations in shape on the gate plates, which may cause some gate plates of the three-position switch 1 to not be in the initial position in a static state, that is, the switch is between the open and closed states. At this time, a certain drive shaft of the switch cannot be rotated 120° during the initial running-in. During the initial running-in of the switch, if the two connecting sleeves 3 are still rotated 120°, it is easy to cause a certain drive shaft of the switch and the connecting sleeve 3 to be damaged by torque. Therefore, the present invention solves the above problem through the following operations:

[0066] After the two power modules are started, the two power modules drive the adjacent connecting shafts 12 to rotate synchronously. The following is described by taking the rotation process of the upper connecting shaft 12 as an example:

[0067] The connecting shaft 12 drives the connecting sleeve 3 to rotate synchronously through the transmission of the movable column 13 and the limit ball 14, and then drives the driving shaft on the upper side of the three-position switch 1 to rotate, until the driving shaft on the upper side of the three-position switch 1 rotates to the limit position. If the driving shaft on the upper side of the three-position switch 1 has not rotated 120°, that is, the connecting shaft 12 has not rotated 120°, the connecting shaft 12 will continue to rotate driven by the power module.

[0068] During the continued rotation of the above-mentioned connecting shaft 12, the connecting sleeve 3 squeezes the adjacent limiting ball 14, so that the limiting ball 14 is squeezed and drives the adjacent movable column 13 to move synchronously, thereby causing the limiting ball 14 to gradually lose the limiting cooperation with the connecting sleeve 3, and at the same time, the second elastic member 15 is gradually compressed and stored, and the value detected by the pressure detector increases continuously, until the limiting ball 14 loses the limiting cooperation with the connecting sleeve 3, and the limiting ball 14 and the adjacent movable column 13 move synchronously to the limit position. At this time, the value detected by the pressure detector no longer continues to increase, and at the same time, the connecting shaft 12 no longer drives the connecting sleeve 3 to rotate during the continued rotation, so as to avoid the driving shaft on the three-position switch 1 being unable to rotate to a specified angle, causing the driving shaft and the connecting sleeve 3 to be damaged by torque, so that the subsequent normal running-in work of other three-position switches 1 is affected.

[0069] After the power module drives the connecting shaft 12 to rotate 120° for the first time, the power module drives the connecting shaft 12 to rotate in the opposite direction. When the limit ball 14 rotates to the position where it is re-limited and matched with the connecting sleeve 3, the second elastic member 15 drives the movable column 13 and the limit ball 14 to reset to the initial position, so that the limit ball 14 is re-limited and matched with the connecting sleeve 3. At this time, the connecting shaft 12 can drive the connecting sleeve 3 to rotate in the opposite direction. At the same time, the value detected by the pressure detector is restored to the initial value, and the rotation angle of the output shaft of the driving module is revised by the remote control terminal, so that the power module drives the connecting shaft 12 to rotate 120° in the opposite direction from the position where the limit ball 14 is re-limited and matched with the connecting sleeve 3. Then, the above operation is repeated to run-in the three-position switch 1.

[0070] Further, such as Figure 4 , Figure 5 , Figure 7 and Figure 8 As shown, the protection component also includes: a fixed ring 16, which is rotatably connected to the side of the connecting sleeve 3 away from the first elastic member 5 thereon; an extrusion ring 17, which is rotatably connected to the connecting shaft 12, and the extrusion ring 17 is located in the fixed ring 16; a limiting column 19, the connecting shaft 12 is provided with a liquid storage chamber 18, the limiting column 19 slides in the liquid storage chamber 18, and the limiting column 19 and the extrusion ring 17 are limitedly matched; a third elastic member 20, which is arranged between the limiting column 19 and the connecting shaft 12; a trigger component, which has two, which are respectively arranged on adjacent connecting sleeves 3, and the trigger component is used to change the position of adjacent limiting columns 19.

[0071] In the above scheme, the fixing ring 16 is located on the left side of the adjacent connecting sleeve 3, and the extrusion ring 17 is located inside the adjacent fixing ring 16; the liquid storage chamber 18 is filled with hydraulic oil, and the hydraulic oil in the liquid storage chamber 18 is located above the adjacent third elastic member 20; the third elastic member 20 is a spring.

[0072] In addition to the above-mentioned driving shaft on the upper side of the three-position switch 1 not being in the initial position, which may cause the upper limit ball 14 and the adjacent connecting sleeve 3 to lose their fit, the upper limit ball 14 and the adjacent connecting sleeve 3 may also lose their fit due to the excessive resistance to the rotation of the driving shaft on the upper side of the three-position switch 1 (when the burrs are too serious, or when the driving shaft on the upper side of the three-position switch 1 is deformed). In this case, even if the remote control terminal has revised the rotation direction and rotation angle of the connecting shaft 12, in the subsequent working process, the connecting shaft 12 will still be unable to rotate to a specified angle, and in the subsequent working process, it will also cause the moving column 13 to move repeatedly, causing the wear of the moving column 13, the limit ball 14 and the second elastic member 15 to increase, which will not only affect the service life of the above-mentioned parts, but also affect the subsequent change in the torque applied to the driving shaft of the three-position switch 1, resulting in uneven running-in of the contacts of the three-position switch 1, affecting the normal use of the three-position switch 1. To this end, the present invention solves this problem through the following operations:

[0073] The above side connecting shaft 12 is clockwise (with Figure 1 The following describes the process of rotating from left to right in the figure as an example:

[0074] In the process of the connecting shaft 12 driving the connecting sleeve 3 to rotate, the connecting shaft 12 drives the adjacent extrusion ring 17 to rotate through the limiting column 19, and the connecting sleeve 3 drives the adjacent fixed ring 16 to rotate. In the process of the limiting ball 14 losing the matching with the connecting sleeve 3, the connecting shaft 12 drives the adjacent extrusion ring 17 and the adjacent fixed ring 16 to rotate relative to each other, and the extrusion ring 17 drives the trigger assembly to work, so that the limiting column 19 moves downward, and the third elastic member 20 is compressed and accumulates force, until the limiting ball 14 loses the limiting matching with the connecting sleeve 3 (this is the first time to lose the limiting matching), the extrusion ring 17 rotates synchronously with respect to the adjacent fixed ring 16 to the extreme position, at this time, in the process of the connecting shaft 12 driving the extrusion ring 17 to continue to rotate, the extrusion ring 17 drives the fixed ring 16 to rotate synchronously through the trigger assembly, until the connecting shaft 12 rotates to the extreme state, the extrusion ring 17 and the adjacent fixed ring 16 stop rotating synchronously.

[0075] During the reverse rotation of the connecting shaft 12, the connecting shaft 12 drives the extrusion ring 17 to rotate in the reverse direction synchronously, until the limit ball 14 is reinserted into the connecting sleeve 3, and the fixing ring 16 rotates to the initial position relative to the extrusion ring 17. However, during this process, the limit column 19 does not reset upward under the action of the trigger assembly. In the subsequent reverse rotation of the driving shaft of the three-position switch 1 driven by the connecting shaft 12, when the driving shaft of the three-position switch 1 rotates in the reverse direction to the limit position, the connecting shaft 12 does not rotate in the reverse direction by 120°. At this time, as the connecting shaft 12 continues to rotate, the limit ball 14 will still be squeezed by the connecting sleeve 3 and lose the match with the connecting sleeve 3 for the second time. At the same time, the extrusion ring 17 drives the trigger assembly to work for the second time, and the trigger assembly drives the limit column 19 to move downward again. When After the limit ball 14 loses cooperation with the connecting sleeve 3 again, the limit column 19 moves downward to the extreme position. At this time, the limit column 19 loses cooperation with the extrusion ring 17. At the same time, under the action of the trigger component, the limit ball 14 will be maintained in the position where it loses cooperation with the connecting sleeve 3, that is, the limit ball 14 cannot be reset upward under the action of the second elastic member 15. At this time, the power module drives the connecting shaft 12 to idle, so as to avoid repeated movement of the moving column 13, which will aggravate the wear of parts such as the moving column 13 and affect the service life of these parts. At the same time, it is ensured that the same torque is applied to the driving shaft of the three-position switch 1 during the subsequent running-in process to ensure the uniformity of the subsequent running-in of the three-position switch 1. The staff will inspect the three-position switch 1 to determine whether the three-position switch 1 is damaged.

[0076] Further, such as Figure 4 , Figure 5 , Figure 7 and Figure 8As shown, the trigger assembly includes: a liquid storage capsule 21, which has two symmetrically distributed ones, both of which are fixed to the adjacent fixing ring 16, and the two liquid storage capsules 21 are squeezed and matched with the adjacent squeezing ring 17; a liquid storage shell 22, which is fixed to one side of the adjacent connecting shaft 12, and the liquid storage shell 22 is connected to the two liquid storage capsules 21 through a hose, and the liquid storage shell 22 is connected to the adjacent liquid storage cavity 18 through a hose; a piston rod 23, which is slidably connected to the liquid storage shell 22, and a fourth elastic member 24 is fixed between the piston rod 23 and the liquid storage shell 22, and the elastic coefficient of the third elastic member 20 is equal to the elastic coefficient of the fourth elastic member 24, which is used to make the liquid in the liquid storage capsule 21 flow into the adjacent liquid storage shell 22 and the adjacent liquid storage cavity 18 at the same time, so that the limit column 19 and the piston rod 23 move downward synchronously, and there is friction damping between the fixing ring 16 and the connecting sleeve 3, and the fixing ring There is friction damping between 16 and the connecting sleeve 3, and the friction force between the two is greater than the elastic force of the third elastic member 20 and the fourth elastic member 24, which is used to make the connecting shaft 12 drive the adjacent fixed ring 16 to rotate through the adjacent extrusion ring 17 only after the single-sided liquid storage bag 21 is squeezed to the limit state; the pull rope 25 is fixedly connected to the side of the adjacent moving column 13 away from its upper limit ball 14, and the pull rope 25 is located in the connecting shaft 12; the limit plate 26 is slidably connected to the adjacent connecting shaft 12, the limit plate 26 is limited by the piston rod 23, the limit plate 26 is fixedly connected to the pull rope 25, and a fifth elastic member 27 is fixedly connected between the limit plate 26 and the adjacent connecting shaft 12, and the elastic coefficient of the fifth elastic member 27 is greater than the elastic coefficient of the adjacent second elastic member 15, so as to prevent the moving column 13 from resetting to the initial position under the action of the adjacent second elastic member 15.

[0077] In the above scheme, the liquid storage capsules 21 are symmetrically distributed front to back. When the above-mentioned connecting shaft 12 drives the squeezing ring 17 to rotate clockwise, the squeezing ring 17 squeezes the adjacent liquid storage capsule 21 on the front side; the position of the liquid storage shell 22 can be specifically adjusted by the staff. The figure and the text are described as an example in which the liquid storage shell 22 is located on the lower side of the adjacent connecting shaft 12. The liquid storage shell 22 is filled with hydraulic oil, and the hydraulic oil in the liquid storage shell 22 is located above the adjacent fourth elastic member 24, and the fourth elastic member 24 is a spring; a one-way valve is provided at the connection between the two liquid storage capsules 21 and the hose, so that the hydraulic oil in the liquid storage shell 22 and the adjacent liquid storage cavity 18 cannot flow into the two adjacent liquid storage capsules 21; the fifth elastic member 27 is a tension spring, and at the initial stage, the fifth elastic member 27 is already in a stretched state.

[0078] Further, such as Figure 8 As shown, the central axis of the squeezing ring 17 coincides with the central axis of the adjacent fixing ring 16 , so that the squeezing ring 17 can evenly squeeze the liquid storage capsules 21 symmetrically distributed in the same fixing ring 16 .

[0079] The following describes the workflow of the upper trigger component as an example:

[0080] When the trigger assembly works for the first time, the extrusion ring 17 squeezes the front liquid storage capsule 21 (at the same time, the extrusion ring 17 loses contact with the rear liquid storage capsule 21), and the hydraulic oil in the front liquid storage capsule 21 is transported to the liquid storage shell 22 and the liquid storage cavity 18, so that the piston rod 23 and the limiting column 19 are synchronously moved downward by the extrusion force, and then the third elastic member 20 and the fourth elastic member 24 are synchronously compressed and stored, until the connecting sleeve 3 and the limiting ball 14 lose the limiting fit for the first time (at this time the pull rope 25 is in a relaxed state), the liquid storage capsule 21 is squeezed to the limit state, and when the connecting sleeve 3 and the limiting ball 14 are subsequently re-limited (at this time the pull rope 25 is straightened again), the extrusion ring 17 is re-extruded with the rear liquid storage capsule 21.

[0081] When the above-mentioned trigger assembly works for the second time, the extrusion ring 17 squeezes the liquid storage bag 21 on the rear side, so that the limit column 19 and the piston rod 23 move downward again (the specific process can be referred to above), until the connecting sleeve 3 and the limit ball 14 lose the limit cooperation for the second time, the limit column 19 and the piston rod 23 move downward to the limit position synchronously, that is, the limit column 19 is no longer limited by the extrusion ring 17, and the piston rod 23 is no longer limited by the limit plate 26. At this time, the fifth elastic member 27 drives the limit plate 26 to move to the left, and then pulls the pull rope 25 to the left until the limit plate 26 moves to the left to the limit position, that is, when the fifth elastic member 27 returns to the unstretched state, the pull rope 25 moves to the limit position. At this time, the pull rope 25 is in a straight state, and the moving column 13 cannot move, that is, the limit ball 14 is maintained in a position where it loses the limit cooperation with the connecting sleeve 3, so that the connecting shaft 12 cannot drive the connecting sleeve 3 to continue to rotate.

[0082] The above description is only a specific implementation mode of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An automatic cycle running-in tool for a three-position switch, characterized in that: include: A transport module, wherein a three-position switch is provided on the transport module, two drive shafts are provided on one side of the three-position switch, and a DC contactor electrically connected to the three-position switch is provided on the transport module; A support frame, arranged on one side of the three-position switch; The connecting sleeves have two, both of which are rotatably and slidably connected to the support frame, and the support frame is provided with two power modules for driving the adjacent connecting sleeves to rotate, and the connecting sleeves are slidably connected to a moving sleeve, and the moving sleeve is detachably connected to a driving sleeve that cooperates with an adjacent driving shaft on the three-position switch, and a first elastic member is fixedly connected between the moving sleeve and the adjacent connecting sleeve; There are two electric push rods, both of which are fixed to the support frame, and the telescopic ends of the electric push rods are fixed to a first connecting ring, and a rotating ring fixed to the adjacent connecting sleeve is rotatably connected inside the first connecting ring; An intelligent multimeter, fixedly connected to one side of the support frame, for detecting the voltage at both ends of the three-position switch; There are two driving assemblies, which are respectively arranged between adjacent connecting sleeves and adjacent moving sleeves, and are used to drive the adjacent connecting sleeves and adjacent moving sleeves to rotate synchronously; Also includes: The protective components are provided with two, and are respectively arranged on adjacent connecting sleeves. The protective components are used to protect the connecting sleeves. The protective components include: A connecting shaft, rotatably connected to a side of the adjacent connecting sleeve away from the first elastic member thereon, and the connecting shaft is transmission-connected to an adjacent power module; A movable column, wherein the connecting shaft is provided with a slide groove, the movable column slides in the slide groove of the connecting shaft, a pressure detector is installed in the slide groove of the connecting shaft, and a second elastic member is provided between the pressure detector and the movable column; A limiting ball is connected to a side of the movable column away from the second elastic member, and the limiting ball is limitedly matched with the adjacent connecting sleeve.

2. The automatic cycle running-in tool for a three-position switch according to claim 1, characterized in that: The drive assembly comprises: A second connecting ring, fixedly connected to the adjacent moving sleeve; A driving rod, rotatably connected to the second connecting ring, and the driving rod is slidably connected to the adjacent rotating ring, and a transmission module is provided between the driving rod and the adjacent moving sleeve; The driving ball is fixedly connected to the adjacent rotating ring, and the driving rod is provided with a limiting groove which cooperates with the driving ball.

3. The automatic cycle running-in tool for a three-position switch according to claim 2, characterized in that: The length of the upper limit groove of the driving rod projected on the horizontal plane is not greater than the maximum compression length of the first elastic member.

4. The automatic cycle running-in tool for a three-position switch according to claim 1, characterized in that: The protection component also includes: A fixing ring, rotatably connected to a side of the connecting sleeve away from the first elastic member thereon; An extrusion ring, rotatably connected to the connecting shaft, the extrusion ring being located inside the fixing ring; A limiting post, wherein the connecting shaft is provided with a liquid storage cavity, the limiting post slides in the liquid storage cavity, and the limiting post cooperates with the extrusion ring in a limiting manner; A third elastic member is disposed between the limiting column and the connecting shaft; There are two trigger components, which are respectively arranged on adjacent connecting sleeves, and the trigger components are used to change the positions of adjacent limiting columns.

5. The automatic cycle running-in tool for a three-position switch according to claim 4, characterized in that: The trigger component comprises: The liquid storage capsules are symmetrically distributed and are both fixed to the adjacent fixing rings, and the two liquid storage capsules are both extrusion-matched with the adjacent extrusion rings; A liquid storage shell, fixedly connected to one side of the adjacent connecting shaft, the liquid storage shell is connected to both of the two liquid storage bags through a hose, and the liquid storage shell is connected to the adjacent liquid storage cavity through a hose; A piston rod is slidably connected to the liquid storage shell, and a fourth elastic member is fixedly connected between the piston rod and the liquid storage shell; A pull rope, fixedly connected to a side of the adjacent moving column away from the limiting ball thereon, and the pull rope is located in the connecting shaft; A limit plate is slidably connected to the adjacent connecting shaft, the limit plate is limitedly matched with the piston rod, the limit plate is fixedly connected to the pull rope, and a fifth elastic member is fixedly connected between the limit plate and the adjacent connecting shaft.

6. The automatic cycle running-in tool for a three-position switch according to claim 5, characterized in that: The central axis of the extrusion ring coincides with the central axis of the adjacent fixing ring.

7. The automatic cycle running-in tool for a three-position switch according to claim 5, characterized in that: The elastic coefficient of the third elastic member is equal to the elastic coefficient of the fourth elastic member, so as to make the liquid in the liquid storage bag flow into the adjacent liquid storage shell and the adjacent liquid storage cavity at the same time.

8. The automatic cycle running-in tool for a three-position switch according to claim 5, characterized in that: There is friction damping between the fixing ring and the connecting sleeve.

9. The automatic cycle running-in tool for a three-position switch according to claim 5, characterized in that: The elastic coefficient of the fifth elastic member is greater than the elastic coefficient of the adjacent second elastic member.

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