Adjusting mechanism and insulating trolley

Abstract

The utility model relates to the technical field of motor detection, in particular to an adjusting mechanism and an insulating trolley, and the adjusting mechanism comprises a lifting assembly which comprises a mounting piece, a driving piece arranged on the mounting piece, and a lifting piece arranged on the mounting piece; the detection assembly comprises a reciprocating piece arranged on the lifting piece, a grounding piece arranged on the lifting piece and a detection piece arranged on the lifting piece, the lifting assembly is arranged to drive the detection assembly to move to the height of a to-be-connected motor measurement contact point, and the reciprocating piece drives the grounding piece and the detection piece to move to the height of the to-be-connected motor measurement contact point. Grounding discharge and insulation detection are sequentially carried out on the motor, so that the device can be adjusted to be suitable for three-phase joint positions of motors of different models, manual operation of an operator is not needed, high-voltage electricity does not need to be connected, personal safety of the device is effectively guaranteed, a detection piece can keep a uniform rotating speed, and reading stability is guaranteed.

Description

An adjustment mechanism and an insulating trolley Technical Field

[0001] This utility model relates to the field of motor testing technology, and in particular to an adjustment mechanism and an insulating trolley. Background Technology

[0002] Regularly testing the insulation of standby motors in power plants is a common and crucial safety procedure. However, in practice, the installation positions (including height, horizontal spacing, and depth) of the three-phase connections of a large number of high-voltage motors of different models, ages, and manufacturers often vary significantly and are not entirely uniform or standardized. This poses a great challenge to insulation testing.

[0003] While some existing technologies employ insulated trolleys with lifting capabilities, their adjustment methods are typically coarse or manual, making it difficult to achieve precise, one-to-one positioning and connection of the three-phase connectors of any motor under test. Furthermore, traditional megohmmeter testing relies on manual cranking, which makes it difficult to maintain a uniform rotation speed, leading to unstable readings. Simultaneously, the vibrations generated during the cranking process can easily cause displacement of the insulated trolley, resulting in poor contact at the connection points. This not only affects the accuracy of the test results but may also generate electric arcs due to poor contact, posing a safety hazard.

[0004] Therefore, there is an urgent need for a device that can automatically adapt to the spatial layout of three-phase connectors of different motor models, achieve precise docking, and automatically complete the entire process of grounding discharge and insulation testing. This device would solve multiple technical problems in the existing technology, such as positioning difficulties, operational hazards, inaccurate readings, and easy equipment displacement, thereby improving testing efficiency and data reliability while ensuring personnel safety. Summary of the Invention

[0005] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the present invention.

[0006] In view of the different three-phase connector positions of the above-mentioned motor models, the difficulty in connecting according to different three-phase connector positions and the problem of uneven shaking of the megohmmeter, this utility model is proposed.

[0007] Therefore, the purpose of this utility model is to provide an adjustment mechanism.

[0008] To solve the above-mentioned technical problems, the present invention provides the following technical solution: an adjustment mechanism, including a lifting assembly, including a mounting component, a driving component disposed on the mounting component, and a lifting component disposed on the mounting component; and a detection assembly, including a reciprocating component disposed on the lifting component, a grounding component disposed on the lifting component, and a detection component disposed on the lifting component.

[0009] In a preferred embodiment of the adjustment mechanism of this utility model, the mounting component includes a bracket, a first slot formed on the bracket, and a handrail disposed on the bracket.

[0010] In a preferred embodiment of the adjustment mechanism of this utility model, the driving component includes a first motor mounted on the bracket, a first bevel gear mounted on the output end of the first motor, a receiving plate mounted on the bracket, a threaded rod mounted on the receiving plate, and a second bevel gear mounted at the end of the threaded rod.

[0011] In a preferred embodiment of the adjustment mechanism of this utility model, the lifting component includes a movable block disposed on the threaded rod, a first connecting rod disposed on the movable block, a vertical plate disposed on the bracket, a second connecting rod disposed on the vertical plate, a base disposed on the first connecting rod, and a first sliding groove formed on the base.

[0012] As a preferred embodiment of the adjustment mechanism of this utility model, the reciprocating component includes a second sliding groove formed on the base, a second motor disposed on the base, a lever disposed on the output end of the second motor, a rocker arm disposed on the base, a second slot formed on the rocker arm, and a movable plate disposed on the rocker arm.

[0013] In a preferred embodiment of the adjustment mechanism described in this utility model, the grounding component includes a grounding wire disposed on the movable plate and a grounding electrode disposed on the base.

[0014] In a preferred embodiment of the adjustment mechanism described in this utility model, the detection component includes a megohmmeter mounted on the base, a rocker arm mounted on the megohmmeter, a motor mounted on the base, a circular disk mounted on the output end of the motor, and a connecting wire mounted on the megohmmeter.

[0015] The beneficial effects of the adjustment mechanism described in this utility model are as follows: By setting up a lifting component, this utility model moves the detection component to the required height of the motor measurement contact point. Through the reciprocating component, the grounding component and the detection component sequentially perform grounding discharge and insulation detection on the motor. The device can be adjusted to suit the three-phase connection positions of different motor models. It does not require manual operation by operators or connection to high voltage, effectively ensuring personal safety. Furthermore, the detection component can maintain a uniform rotation speed, ensuring stable readings.

[0016] In actual use, there is a possibility that the insulating trolley may shift.

[0017] To solve the above-mentioned technical problems, the present invention also provides the following technical solution: an insulated trolley, including the above-mentioned adjustment mechanism, and further including a locking component, including a moving part and a locking part disposed on the moving part.

[0018] In a preferred embodiment of the insulated trolley of this utility model, the moving component includes a housing, a wheel disposed on the housing, a connecting shaft disposed on the wheel, a top rod disposed on the connecting shaft, a third sliding groove formed on the housing, and a foot pedal disposed on the top rod.

[0019] In a preferred embodiment of the insulated trolley of this utility model, the locking component includes a rotating rod disposed on the connecting shaft, a paddle disposed on the rotating rod, and a brake block disposed on the wheel.

[0020] The beneficial effects of the insulating trolley described in this utility model are as follows: By setting a foot pedal, when the trolley moves to the motor to be tested, stepping on the foot pedal locks the wheels simultaneously through the locking mechanism, preventing the insulating trolley from shifting due to the shaking of the megohmmeter, thus ensuring stable contact at the connection point. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0022] Figure 1 is a schematic diagram of the overall adjustment mechanism and insulating trolley of this utility model.

[0023] Figure 2 is a schematic diagram of the overall lifting component of the adjustment mechanism of this utility model.

[0024] Figure 3 is an enlarged view of point A in Figure 2.

[0025] Figure 4 is a schematic diagram of the detection component of the adjustment mechanism of this utility model.

[0026] Figure 5 is an enlarged view of point B in Figure 4.

[0027] Figure 6 is a schematic diagram of the overall structure of the insulating trolley of this utility model.

[0028] Figure 7 is a cross-sectional view of the insulating trolley of this utility model. Detailed Implementation

[0029] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0030] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0031] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0032] Example 1

[0033] Referring to Figures 1-7, this is the first embodiment of the present invention. This embodiment provides an adjustment mechanism, including a lifting assembly 100, comprising a mounting member 101 for supporting a driving member 102 and a lifting member 103. The driving member 102, mounted on the mounting member 101, provides driving force to the lifting member 103 and can adjust the height of the lifting member 103. The lifting member 103, mounted on the mounting member 101, moves to the three-phase connector connection point of the motor under test. A detection assembly 200 includes a reciprocating member 201 mounted on the lifting member 103, which drives a grounding member 202 and a detection member 203 to connect sequentially to the measurement contact point of the motor under test. The grounding member 202, mounted on the lifting member 103, discharges through the measurement contact point of the motor under test, eliminating any possible residual charge inside the motor and ensuring the accuracy of the insulation test. The detection member 203, mounted on the lifting member 103, connects to the three-phase connector connection point of the motor under test to measure and obtain the insulation resistance value of the motor.

[0034] Specifically, the mounting component 101 includes a bracket 101a, a first slot 101b formed on the bracket 101a, and a handrail 101c fixedly connected to the bracket 101a. The bracket 101a has an L-shaped design and consists of a vertical plate and a base plate. An opening is formed on the base plate. A circuit control system is set inside the bracket 101a. The bracket 101a is used to support the drive component 102 and the lifting component 103. The first slot 101b is formed on the vertical plate of the bracket 101a to provide guidance for the reciprocating component 201. Holding the handrail 101c drives the whole component.

[0035] Furthermore, the driving component 102 includes a first motor 102a fixedly connected to the base plate of the bracket 101a, a first bevel gear 102b fixedly connected to the output end of the first motor 102a, a receiving plate 102c fixedly connected to the base plate of the bracket 101a, a threaded rod 102d rotatably connected to the receiving plate 102c, and a second bevel gear 102e fixedly connected to the end of the threaded rod 102d. The first motor 102a provides driving force to the first bevel gear 102b, the receiving plate 102c provides supporting force to the threaded rod 102d, the first bevel gear 102b meshes with the second bevel gear 102e, and two of each of the first bevel gear 102b, the second bevel gear 102e, the receiving plate 102c, and the threaded rod 102d are provided and arranged symmetrically.

[0036] Furthermore, the lifting component 103 includes a movable block 103a threadedly connected to the threaded rod 102d, a first connecting rod 103b rotatably connected to the movable block 103a, a vertical plate 103c fixedly connected to the base plate of the bracket 101a, a second connecting rod 103d rotatably connected to the vertical plate 103c, a base 103e rotatably connected to the end of the first connecting rod 103b away from the movable block 103a, and a first sliding groove 103f opened on the base 103e. The movable block 103a moves with the rotation of the threaded rod 102d. The first connecting rod 103b and the second connecting rod 103d are rotatably connected and move in a scissor motion. The base 103e has an L-shaped design and consists of a vertical plate and a base plate. An opening is opened on the base plate. The end of the second connecting rod 103d away from the vertical plate 103c is slidably connected in the first sliding groove 103f. The first sliding groove 103f provides guidance for the second connecting rod 103d.

[0037] Operation process: When the entire assembly is moved to the motor under test, the motor under test is located in the opening of the base plate of the bracket 101a. The first motor 102a starts, driving the first bevel gear 102b to rotate. Since the first bevel gear 102b meshes with the second bevel gear 102e, the second bevel gear 102e drives the threaded rod 102d to rotate on the receiving plate 102c. As the threaded rod 102d rotates, the moving block 103a moves on the threaded rod 102d and drives the first connecting rod 103b rotatably connected to it to rotate, causing the first connecting rod 103b and the second connecting rod 103d to perform a scissor motion. The end of the second connecting rod 103d is slidably connected in the first sliding groove 103f opened on the base 103e. The scissor motion of the first connecting rod 103b and the second connecting rod 103d drives the base 103e to move up and down, realizing the height adjustment of the base 103e, so that the detection component 200 on the base 103e can be moved to the height of the three-phase connector connection of the motor under test.

[0038] Example 2

[0039] Referring to Figures 4-5, this is the second embodiment of the present invention. The difference from the previous embodiment is that the reciprocating component 201 includes a second sliding groove 201a formed on the vertical plate of the base 103e, a second motor 201b fixedly connected to the base 103e, a lever 201c fixedly connected to the output end of the second motor 201b, a rocker arm 201d rotatably connected to the vertical plate of the base 103e, a second slot 201e formed on the rocker arm 201d, and a moving plate 201f rotatably connected to the rocker arm 201d. The second motor 201b slides... The second motor 201b provides driving force to the lever 201c, which is connected in the first slot 101b. The end of the lever 201c is slidably connected in the second slot 201e. The moving plate 201f has an opening, and its two sides are connected to the grounding component 202 and the detection component 203, respectively. The moving plate 201f is slidably connected in the second slide groove 201a as driven by the rocker arm 201d. The second slide groove 201a provides guidance for the moving plate 201f. The moving plate 201f drives the grounding component 202 and the detection component 203 to connect to the three-phase connector of the motor under test in sequence.

[0040] Specifically, the grounding component 202 includes a grounding wire 202a fixedly connected to the movable plate 201f, and a grounding electrode 202b fixedly connected to the base plate 103e. The grounding wire 202a and the grounding electrode 202b are fixedly connected. The grounding wire 202a contacts the three-phase connector of the motor under test to discharge, and the grounding electrode 202b is the grounding point.

[0041] Furthermore, the testing component 203 includes a megohmmeter 203a fixedly connected to the base plate 103e, a rocker arm 203b rotatably connected to the megohmmeter 203a, a motor 203c fixedly connected to the base plate 103e, a circular disk 203d fixedly connected to the output end of the motor 203c, and a connecting wire 203e fixedly connected to the megohmmeter 203a. The megohmmeter 203a displays the insulation resistance value of the motor under test. The rocker arm 203b is the output end of the megohmmeter 203a. The motor 203c provides driving force to the rocker arm 203b. The end of the rocker arm 203b away from the megohmmeter 203a is fixedly connected to the circular disk 203d and is connected by an eccentric shaft. The connecting wire 203e has two wires, one connected to the measuring contact point of the motor under test and the other in contact with the outer casing of the motor under test.

[0042] The rest of the structure is the same as in Example 1.

[0043] Operation process: When the detection component 200 reaches the three-phase connector of the motor under test, the second motor 201b starts, driving the lever 201c on its output end to rotate. The lever 201c moves the rocker arm 201d to one side and slides into the second slot 201e. The rocker arm 201d drives the moving plate 201f to one side. At this time, the grounding wire 202a fixedly connected to one side of the moving plate 201f comes into contact with the three-phase connector of the motor under test, discharging the residual charge inside the motor. The grounding electrode 202b is the grounding point, eliminating the residual charge inside the motor and ensuring the accuracy of the insulation test. The second motor 201b drives the lever 201c to continue rotating, driving the rocker arm... When 201d swings in the opposite direction, the two connecting wires 203e are connected to the three-phase connector of the motor under test and the outer casing of the motor under test, respectively. The motor 203c is started, and the motor 203c drives the circular disk 203d to rotate. The circular disk 203d drives the rocker arm 203b to keep the rocker meter 203a rotating at a constant speed of about 120 revolutions per minute, thereby obtaining the insulation resistance value of the motor under test and ensuring the stability of the reading. When the motor under test is detected to be energized, the second motor 201b is controlled by the circuit control system to stop running and cut off the power supply. The entire measurement connection process does not require personnel operation and does not require connection to high voltage, effectively ensuring the personal safety of the operator.

[0044] Example 3

[0045] Referring to Figures 6 and 7, this is the third embodiment of the present invention. Unlike the previous embodiments, this embodiment provides an insulated trolley, which includes the above-mentioned adjustment mechanism and a locking component 300. The trolley includes a moving part 301 that provides driving force for the lifting component 100 and the detection component 200, and a locking part 302 disposed on the moving part 301 to lock the movement of the entire device.

[0046] Specifically, the movable component 301 includes a housing 301a, a wheel 301b rotatably connected to the side of the housing 301a, a connecting shaft 301c disposed inside the wheel 301b, a push rod 301d fixedly connected to the connecting shaft 301c, a third slide groove 301e formed on one side of the housing 301a, and a foot pedal 301f fixedly connected to the end of the push rod 301d. The wheel 301b is hollow and has an internal disc. When the wheel 301b rotates, the internal disc does not rotate. The size of the internal disc... The connecting shaft 301c is rotatably connected to the inner plate of the wheel 301b, which is adapted to the size of the opening of the wheel 301b. The push rod 301d is divided into two sections and is rotatably connected. The connection of the push rod 301d is slidably connected in the third slide groove 301e. The third slide groove 301e is provided with a slot. There are multiple wheels 301b and connecting shafts 301c, which are arranged symmetrically. There are two push rods 301d and three slide grooves 301e, which are arranged symmetrically. The foot pedal 301f is connected to the ends of the two push rods 301d respectively.

[0047] Furthermore, the locking component 302 includes a rotating rod 302a fixedly connected to the connecting shaft 301c, a paddle 302b rotatably connected to the rotating rod 302a, and a brake block 302c fixedly connected to the inner disc of the wheel 301b. The rotating rod 302a rotates with the rotation of the connecting shaft 301c. The end of the paddle 302b away from the rotating rod 302a is rotatably connected to the brake block 302c. The brake block 302c is arc-shaped and matches the outer ring of the rotating wheel 301b. There are two paddles 302b and two brake blocks 302c, which are evenly distributed around the circumference.

[0048] The rest of the structure is the same as in Example 2.

[0049] Operation process: When the entire device reaches the position of the motor under test, step on the foot pedal 301f. The foot pedal 301f drives the connection of the push rod 301d to rise upward and slide into the third slide groove 301e. When it reaches a certain degree, it is locked into the slot in the third slide groove 301e. The two ends of the push rod 301d are fixedly connected to the two connecting shafts 301c respectively. When the push rod 301d rises, it drives the connecting shaft 301c to rotate. The rotation of the connecting shaft 301c drives the rotating rod 302a fixedly connected to it to rotate. The rotating rod 302a drives the two paddles 302b to move the brake block 302c, so that the brake block 302c is tightly attached to the wheel 301b, and performs a clamping braking movement to lock the wheel 301b, preventing the insulated carriage from shifting due to the shaking of the megohmmeter 203a, and making the connection point contact stable.

[0050] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape and proportion of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of this utility model. The order or sequence of any process or method steps may be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structural equivalents but also equivalent structures. Without departing from the scope of this invention, other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments. Therefore, this invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0051] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the present invention as currently considered, or those features that are not relevant to implementing the present invention) may be omitted.

[0052] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0053] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. An adjusting mechanism, characterized in that: The system includes a lifting assembly (100), comprising a mounting member (101), a drive member (102) disposed on the mounting member (101), and a lifting member (103) disposed on the mounting member (101); and a detection assembly (200), comprising a reciprocating member (201) disposed on the lifting member (103), a grounding member (202) disposed on the lifting member (103), and a detection member (203) disposed on the lifting member (103).

2. The adjusting mechanism as described in claim 1, characterized in that: The mounting component (101) includes a bracket (101a), a first slot (101b) formed on the bracket (101a), and a handrail (101c) disposed on the bracket (101a).

3. The adjusting mechanism as described in claim 2, characterized in that: The driving component (102) includes a first motor (102a) disposed on the bracket (101a), a first bevel gear (102b) disposed on the output end of the first motor (102a), a receiving plate (102c) disposed on the bracket (101a), a threaded rod (102d) disposed on the receiving plate (102c), and a second bevel gear (102e) disposed at the end of the threaded rod (102d).

4. The adjusting mechanism as described in claim 3, characterized in that: The lifting component (103) includes a movable block (103a) disposed on the threaded rod (102d), a first connecting rod (103b) disposed on the movable block (103a), a vertical plate (103c) disposed on the bracket (101a), a second connecting rod (103d) disposed on the vertical plate (103c), a base (103e) disposed on the first connecting rod (103b), and a first sliding groove (103f) formed on the base (103e).

5. The adjusting mechanism as described in claim 4, characterized in that: The reciprocating component (201) includes a second slide groove (201a) formed on the base (103e), a second motor (201b) formed on the base (103e), a lever (201c) formed on the output end of the second motor (201b), a rocker arm (201d) formed on the base (103e), a second slot (201e) formed on the rocker arm (201d), and a moving plate (201f) formed on the rocker arm (201d).

6. The adjusting mechanism as described in claim 5, characterized in that: The grounding component (202) includes a grounding wire (202a) disposed on the movable plate (201f) and a grounding electrode (202b) disposed on the base (103e).

7. The adjusting mechanism as described in claim 6, characterized in that: The detection component (203) includes a megohmmeter (203a) disposed on the base (103e), a rocker arm (203b) disposed on the megohmmeter (203a), a motor (203c) disposed on the base (103e), a circular disk (203d) disposed on the output end of the motor (203c), and a connecting wire (203e) disposed on the megohmmeter (203a).

8. An insulated trolley, characterized in that: The adjustment mechanism according to any one of claims 1 to 7 further includes a locking component (300), including a movable member (301) and a locking member (302) disposed on the movable member (301).

9. The insulating trolley as described in claim 8, characterized in that: The movable component (301) includes a housing (301a), a wheel (301b) disposed on the housing (301a), a connecting shaft (301c) disposed on the wheel (301b), a push rod (301d) disposed on the connecting shaft (301c), a third slide groove (301e) formed on the housing (301a), and a foot pedal (301f) disposed on the push rod (301d).

10. The insulating trolley as described in claim 9, characterized in that: The locking member (302) includes a rotating rod (302a) disposed on the connecting shaft (301c), a paddle (302b) disposed on the rotating rod (302a), and a brake block (302c) disposed on the wheel (301b).

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