Turnover device for motor stator core

Abstract

The utility model discloses a turnover device for a stator core of a motor, which belongs to the technical field of stator core assembly of a steam turbine generator, and comprises a C-shaped rolling cage type frame body, a V-shaped supporting frame, a roller rotating tire, a turnover driving device and a control system, the roller rotating tire comprises a supporting base, and two groups of driven rollers are arranged on the supporting base; the C-shaped rolling cage type frame body comprises a set of arc-shaped frame bodies, arc-shaped grooves are formed in the outer sides of the arc-shaped frame bodies, the inner sides of the arc-shaped frame bodies are of an L-shaped structure, the V-shaped bearing frame comprises two sets of V-shaped support assemblies installed on the L-shaped structure, each V-shaped support assembly comprises a bottom plate and an adjusting block, and the distance between the two sets of V-shaped support assemblies is adjusted through a first driving mechanism and a lead screw. The distance between the two adjusting blocks on the bottom plate is adjusted through a T-shaped bolt; the turnover driving device comprises a second driving motor, a speed reducer and a pin gear, the second driving motor drives the C-shaped rolling cage type frame body to rotate above the driven roller through the driving speed reducer and the pin gear, and the control system is in control connection with the first driving mechanism and the second driving motor. The problems that in the prior art, a motor stator iron core turning tool is complex in installation, poor in universality, complex in structure and inconvenient to use are solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of stator core assembly of steam turbine generators, and in particular relates to a turning device for the stator core of a motor. Background Art

[0002] The press-fitting and turning over of the stator core of a steam turbine generator is one of the key processes in the manufacture of the generator. The quality of the stator core of the motor will directly affect whether the unit can operate safely and stably. During the manufacturing process of the stator core after vertical press-fitting and heating, there is a process of lifting and turning over from vertical to horizontal and from horizontal to vertical to meet the manufacturing requirements of the stator core. On May 3, 2013, a new tool was proposed in a patent document with the publication number "201320238809.9" and the name "A stator core turning over tool" to realize the turning over of the stator core.

[0003] However, the device still has the following defects:

[0004] 1. The installation process is cumbersome and repetitive, requiring more operators and longer operation time;

[0005] 2. Poor versatility, each connection plate can only be applied to one or two models;

[0006] 3. When there are more machine types, the number of connecting plates, hangers, etc. increases, occupying a larger production area;

[0007] 4. The support frame spacing needs to be adjusted according to different machine models, which takes a long time to occupy the crane and requires many lifting times. Utility Model Content

[0008] The utility model aims to solve the problems of complicated installation, poor versatility, complex structure and inconvenient use of motor stator core turning tools in the prior art, and proposes a novel turning device for motor stator core, which is mainly used for 90° auxiliary turning of motor stators (the stator axis changes from horizontal to vertical or from vertical to horizontal), can save a lot of auxiliary working hours for turning workpieces, and greatly improve the safety of turning and hoisting.

[0009] In order to achieve the above-mentioned invention object, the technical solution of the utility model is as follows:

[0010] A turning device for a motor stator core comprises a C-shaped rolling cage frame, a V-shaped supporting frame, a roller rotating tire, a turning drive device and a control system, wherein the roller rotating tire comprises a supporting base, and two groups of driven rollers are arranged on the supporting base; the C-shaped rolling cage frame comprises a group of arc-shaped frames, and an arc-shaped groove body matching the driven roller is arranged on the outer side of the arc surface of the arc-shaped frame body, and the inner side of the arc-shaped frame body is an L-shaped structure, and the V-shaped supporting frame is used to fix the stator annular workpiece, and the V-shaped supporting frame comprises two groups of V-shaped bracket assemblies installed on the L-shaped structure, and the V-shaped bracket assembly comprises a bottom plate and an adjusting block, and the two groups of V-shaped bracket assemblies are adjusted by a driving mechanism 1 and a lead screw. The two adjusting blocks on the bottom plate are adjusted by T-bolts. The turning drive device comprises a driving motor 2, a reducer, and a pin gear arranged on the outer side of the arc-shaped frame body, and the driving motor 2 drives the C-shaped rolling cage frame to rotate above the driven roller by driving the reducer and the pin gear, and the control system is controlled and connected with the driving mechanism 1 and the driving motor 2.

[0011] Furthermore, the support base is a box beam assembly base.

[0012] Furthermore, positioning keys are provided at the bottom of the driven roller and the mounting surface of the support base.

[0013] Furthermore, the pin gear includes an arc-shaped positioning boss and a cylindrical pin, and a baffle for limiting axial movement of the cylindrical pin is provided on the pin gear.

[0014] Furthermore, the driven rollers include at least four, and the arc-shaped frame supported above the driven rollers is guided by the roller flanges of the driven rollers.

[0015] Furthermore, the arc-shaped frame of the C-shaped rolling cage frame is welded and fixed by connecting cross beams and tie rods.

[0016] Beneficial effects of the utility model:

[0017] 1. In the utility model, the turning device for the stator core of the motor comprises a C-shaped rolling cage frame, a V-shaped support frame, a roller tire, a turning drive device and a control system. The device has a compact structure and occupies a small area (slightly larger than the area occupied by the stator annular workpiece). The turning device controls the driving mechanism 1 through the control system, and adjusts the spacing of the two groups of V-shaped bracket assemblies along the axial direction of the workpiece through the cooperation of the two groups of V-shaped bracket assemblies of the V-shaped support frame, and no longer needs to adjust the spacing of the lower support seat to adapt to the size of the workpiece; the turning device controls the driving motor 2 through the control system, and the cooperation of the C-shaped rolling cage frame, the roller tire, the turning drive device and other structures to realize the turning of the workpiece at a specified angle. The entire equipment requires fewer operators and the operation time is significantly shortened. At the same time, the turning device is relatively simple to install and has the advantages of good versatility.

[0018] 2. In the present invention, the supporting base is a box-beam assembly base, which has strong overall rigidity and bearing capacity. The box-beam assembly base preferably adopts welded structural parts and a structure that is stress-relieved before processing.

[0019] 3. In the utility model, the roller tire rotating device includes a supporting base, on which are provided two sets of driven rollers. Positioning keys are provided at the bottom of the driven rollers and the mounting surface of the supporting base to ensure the position accuracy of the C-type rolling cage frame and to be able to withstand horizontal impact shear forces, thereby ensuring the normal operation of the equipment and a long service life.

[0020] 4. In the utility model, the pin gear includes an arc-shaped positioning boss and a cylindrical pin. The C-shaped rolling cage frame is positioned by the arc-shaped positioning boss and the cylindrical pin. All cylindrical pins of the pin gear are equipped with baffles to prevent the cylindrical pins from axial movement.

[0021] 5. In the utility model, the driven rollers include at least four, and the arc-shaped frame body supported above the driven rollers is guided by the roller flanges of the driven rollers to assist in limiting the movement trajectory of the arc-shaped frame body.

[0022] 6. In the utility model, the arcuate frame of the C-shaped rolling cage frame is welded and fixed by connecting cross beams and tie rods. The arcuate frame of the C-shaped rolling cage frame is welded and fixed by connecting cross beams and tie rods. Such welded structural parts can be artificially aged to ensure the dynamic and static rigidity of the tooling during long-term use, reduce deformation, and the manufacturing cost of the structural parts is relatively low, which is also convenient for optimizing the frame structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the turning device in the utility model.

[0024] Figure 2 yes Figure 1 Right view of .

[0025] Figure 3 yes Figure 1 Top view of the .

[0026] Figure 4 yes Figure 3 Enlarged view of part A.

[0027] Figure 5 yes Figure 1 Schematic diagram of the structure of the C-shaped rolling cage frame of the flipping device after flipping 90°.

[0028] Among them, 1. C-type rolling cage frame; 2. V-shaped supporting frame; 3. Roller tire; 4. Flipping drive device; 1.1. Arc-shaped frame; 1.2. Arc-shaped trough; 1.3. L-shaped structure; 1.4. Connecting beam; 2.1. V-shaped bracket assembly; 2.2. Driving mechanism one; 2.3. T-bolt; 2.4. Lead screw; 3.1. Support base; 3.2. Driven roller; 3.3. Positioning key; 4.1. Driving motor two; 4.2. Reducer; 4.3. Pin gear; 2.1.1. Bottom plate; 2.1.2. Adjustment block; 3.2.1. Roller flange; 4.3.1. Cylindrical pin; 4.3.2. Arc-shaped positioning boss; 4.3.3. Baffle. DETAILED DESCRIPTION

[0029] The present invention is further described in detail below in conjunction with the embodiments, but the implementation manner of the present invention is not limited thereto.

[0030] Example 1

[0031] This embodiment is one of the basic implementation methods, a turning device for a motor stator core, belonging to the technical field of stator core assembly of a steam turbine generator, and referring to Figure 1-5 , including a C-shaped rolling cage frame 1, a V-shaped support frame 2, a roller tire 3, a flip drive device 4 and a control system, the roller tire 3 includes a support base 3.1, and the support base 3.1 is provided with two groups of driven rollers 3.2; the C-shaped rolling cage frame 1 includes a group of arc-shaped frames 1.1, the arc-shaped frame 1.1 has an arc-shaped groove body 1.2 matching the driven roller 3.2 on the outer side of the arc surface, and the inner side of the arc-shaped frame 1.1 is an L-shaped structure 1.3, the V-shaped support frame 2 is used to fix the stator annular workpiece, and the V-shaped support frame 2 includes two groups of V-shaped bracket assemblies 2.1 installed on the L-shaped structure 1.3, and the V-shaped bracket assembly 2 .1 includes a base plate 2.1.1 and an adjusting block 2.1.2. The two groups of V-shaped bracket assemblies 2.1 are adjusted in distance by a driving mechanism 1 5 and a lead screw. The two adjusting blocks 2.1.2 on the base plate 2.1.1 are adjusted in distance by a T-bolt 2.3. The flip driving device 4 includes a driving motor 2 4.1, a reducer 4.2, and a pin gear 4.3 arranged on the outside of the arc-shaped frame 1.1. The driving motor 2 4.1 drives the reducer 4.2 and the pin gear 4.3 to drive the C-shaped rolling cage frame 1 to rotate above the driven roller 3.2. The control system is controlled and connected with the driving mechanism 1 5 and the driving motor 2 4.1.

[0032] Preferably, the support base 3.1 is a box beam assembly base.

[0033] Preferably, the driven rollers 3.2 include at least four, and the arc-shaped frame 1.1 supported above the driven rollers 3.2 is guided by the roller flanges 3.2.1 of the driven rollers 3.2.

[0034] Example 2

[0035] This embodiment is a further optimization of the embodiment 1, and the difference is that a positioning key 3.3 is provided at the bottom of the driven roller 3.2 and the mounting surface of the support base 3.1, Figure 2 To ensure the position accuracy of the C-type rolling cage frame 1, and to be able to withstand horizontal impact shear force, to ensure the normal operation of the equipment and a long service life.

[0036] Example 3

[0037] The difference between this embodiment and embodiment 1-2 is that the pin gear 4.3 includes an arc-shaped positioning boss 2.1.3 and a cylindrical pin 4.3.1, and a baffle 4.3.2 is provided on the pin gear 4.3 to limit the axial movement of the cylindrical pin 4.3.1. Figure 1 .

[0038] Example 4

[0039] The difference between this embodiment and the embodiments 1-3 is that the arc frame 1.1 of the C-shaped rolling cage frame 1 is fixed by welding through connecting crossbeams 1.4 and tie bars. Figure 2 .

[0040] Example 5

[0041] To facilitate the public to understand the present scheme, this embodiment takes a new type of flipping device for a motor stator core as an example to further illustrate the present scheme. In actual applications, the motor stator needs to be flipped 90°. The flipping device is used to assist the motor stator in turning over (the stator axis changes from horizontal to vertical or from vertical to horizontal), which can save a lot of work-piece turning time and greatly improve the safety of turning over and hoisting. At the same time, the entire device is easy to install, occupies a small area (slightly larger than the stator annular workpiece), and is also easy to operate.

[0042] refer to Figure 1-5 The turning device comprises a C-shaped rolling cage frame 1, a V-shaped support frame 2, a roller tire 3, a turning drive device 4 and a control system. The roller tire 3 comprises a support base 3.1, on which two sets of driven rollers 3.2 are arranged; the C-shaped rolling cage frame 1 comprises a set of arc-shaped frames 1.1, on the outer side of the arc surface of the arc-shaped frames 1.1 there is an arc-shaped groove 1.2 matching the driven rollers 3.2, and the inner side of the arc-shaped frames 1.1 is an L-shaped structure 1.3,

[0043] The V-shaped support frame 2 is used to fix the stator annular workpiece. The V-shaped support frame 2 includes two groups of V-shaped support assemblies 2.1 installed on the L-shaped structure 1.3. The V-shaped support assembly 2.1 includes a base plate 2.1.1 and an adjustment block 2.1.2. The two groups of V-shaped support assemblies 2.1 are adjusted in distance by a driving mechanism 15 and a lead screw. The two adjustment blocks 2.1.2 on the base plate 2.1.1 are adjusted in distance by T-shaped bolts 2.3. In actual application, the driving mechanism 15 can be driven by a motor or a manual wheel to achieve the distance adjustment of the two groups of V-shaped support assemblies 2.1.

[0044] The flip driving device 4 comprises a driving motor 2 4.1, a reducer 4.2, and a pin gear 4.3 arranged outside the arc frame 1.1. The driving motor 2 4.1 drives the reducer 4.2 and the pin gear 4.3 to drive the C-shaped rolling cage frame 1 to rotate above the driven roller 3.2.

[0045] The driving motor 2 4.1 described in this embodiment is an electromagnetic brake three-phase asynchronous motor, and the reducer 4.2 is a combined reducer. The cooperation of the asynchronous motor, the combined reducer and the pin gear 4.3 makes the flip drive device 4 have reliable reverse stop performance, ensuring that the C-type rolling cage frame 1 can be locked at any angle position and can withstand the impact when the workpiece is hoisted.

[0046] The control system is connected with the drive mechanism 1 5 and the drive motor 2 4.1. The control system of this embodiment can be composed of PLC + inverter + touch screen to realize the control of flip speed and position. Mechanical limit, electrical limit, overload protection, short circuit protection and overvoltage protection are added according to the needs. Switches, control buttons, indicator lights and emergency stop switches are installed on the control cabinet panel.

[0047] In this embodiment, the support base 3.1 is a box beam assembly base.

[0048] In this embodiment, a positioning key 3.3 is provided at the mounting surface between the bottom of the driven roller 3.2 and the supporting base 3.1.

[0049] In this embodiment, the pin gear 4.3 includes an arc-shaped positioning boss 2.1.3 and a cylindrical pin 4.3.1, and a baffle 4.3.2 is provided on the pin gear 4.3 to limit the axial movement of the cylindrical pin 4.3.1. The positioning is performed by the arc-shaped positioning boss 2.1.3 + cylindrical pin 4.3.1 arranged on the outside of the C-shaped rolling cage frame 1, and all cylindrical pins 4.3.1 on the pin gear 4.3 are prevented from axial movement by the baffle 4.3.2.

[0050] In this embodiment, the driven rollers 3.2 include at least four, and the arc-shaped frame 1.1 supported above the driven rollers 3.2 is guided by the roller flanges 3.2.1 of the driven rollers 3.2.

[0051] In this embodiment, the arc frame 1.1 of the C-shaped rolling cage frame 1 is welded and fixed by connecting cross beams 1.4 and tie rods.

[0052] When in use, the flip device is in the initial state, refer to Figure 1 According to the specifications of the stator annular workpiece, the distance between the two groups of V-shaped bracket assemblies 2.1 is adjusted through the drive mechanism 1 5 and the lead screw; the two adjustment blocks 2.1.2 on the bottom plate 2.1.1 adjust their distance through the T-bolts 2.3, so that the stator annular workpiece is fixed on the L-shaped structure 1.3 of the C-shaped rolling cage frame 1; then the drive motor 2 4.1 of the flip drive device 4 is started, and the drive motor 2 4.1 drives the C-shaped rolling cage frame 1 to rotate 90° above the driven roller 3.2 through the drive reducer 4.2 and the pin gear 4.3, reference Figure 5 , so as to achieve the purpose of flipping the stator annular workpiece.

[0053] The turning device for the stator core of the motor has a reasonable overall structure, simple operation, and occupies less area; it is safe and reliable in operation, adopts double-pin gear transmission, and is adaptable to the impact of workpiece hoisting; it has good versatility and can be applied to various models with stator core weights below 100T.

Claims

1. A turning device for a motor stator core, characterized in that: It comprises a C-shaped rolling cage frame (1), a V-shaped support frame (2), a tire roller (3), a turning drive device (4) and a control system. The tire roller (3) comprises a support base (3.1), and two groups of driven rollers (3.2) are provided on the support base (3.1); The C-shaped rolling cage frame (1) comprises a group of arc-shaped frames (1.1), wherein an arc-shaped groove (1.2) matching with the driven roller (3.2) is provided on the outer side of the arc surface of the arc-shaped frame (1.1), and an L-shaped structure (1.3) is formed on the inner side of the arc-shaped frame (1.1). The V-shaped support frame (2) is used to fix the stator annular workpiece. The V-shaped support frame (2) comprises two groups of V-shaped support assemblies (2.1) installed on the L-shaped structure (1.3). The V-shaped support assembly (2.1) comprises a base plate (2.1.1) and an adjustment block (2.1.2). The two groups of V-shaped support assemblies (2.1) are adjusted in distance by a driving mechanism 1 (2.2) and a lead screw (2.4). The two adjustment blocks (2.1.2) on the base plate (2.1.1) are adjusted in distance by a T-shaped bolt (2.3). The turning drive device (4) comprises a second driving motor (4.1), a reducer (4.2), and a pin gear (4.3) arranged outside the arc-shaped frame (1.1); the second driving motor (4.1) drives the reducer (4.2) and the pin gear (4.3) to drive the C-shaped rolling cage frame (1) to rotate above the driven roller (3.2); The control system is connected to the driving mechanism 1 (2.2) and the driving motor 2 (4.1).

2. The turning device for a motor stator core according to claim 1, characterized in that: The support base (3.1) is a box beam assembly base.

3. The turning device for a motor stator core according to claim 1, characterized in that: A positioning key (3.3) is provided at the bottom of the driven roller (3.2) and the mounting surface of the support base (3.1).

4. The turning device for a motor stator core according to claim 1, characterized in that: The pin gear (4.3) comprises an arc-shaped positioning boss (4.3.2) and a cylindrical pin (4.3.1), and a baffle (4.3.3) for limiting axial movement of the cylindrical pin (4.3.1) is provided on the pin gear (4.3).

5. The turning device for a motor stator core according to claim 1, characterized in that: The driven rollers (3.2) include at least four, and the arc-shaped frame (1.1) supported above the driven rollers (3.2) is guided by the roller flanges (3.2.1) of the driven rollers (3.2).

6. The turning device for a motor stator core according to claim 1, characterized in that: The arc-shaped frame body (1.1) of the C-shaped rolling cage frame body (1) is welded and fixed by connecting cross beams (1.4) and tie rods.

Images