Rail transit motor rotor bar straightening device and straightening method

Abstract

The application provides a motor rotor bar straightening device and method for rail transit, and belongs to the technical field of straightening equipment. The device comprises a mounting bottom plate provided with a mounting frame at the upper end, a mechanical gripper assembly arranged at the top end inside the mounting frame, an automatic twisting assembly and an automatic straightening assembly arranged on the mounting bottom plate and distributed from left to right, and a floating clamping assembly arranged on the inner wall of the mounting frame. The twisting machine and the straightening machine are used to respectively twist and straighten the bar, instead of manual processing, to liberate the productive forces, improve the production efficiency, and achieve higher straightening precision and better consistency, thereby reducing the scrap rate of the bar. In the straightening process, the floating clamping assembly is used to continuously clamp and fix the bar. When the pressure head of the straightening machine returns and is separated from the contact with the bar, the straightening machine can quickly calculate whether the straightening meets the expectation, without the need to rotate and measure again, thereby shortening the straightening time and improving the work efficiency.

Description

Technical Field

[0001] This invention belongs to the field of straightening equipment technology, specifically a straightening device and method for the rotor guide bars of a rail transit motor. Background Technology

[0002] With the development of rail transit and high-speed rail, the requirements for their traction power—asynchronous traction motors—are becoming increasingly stringent. The motor rotor is the core component of the asynchronous traction motor, converting electrical energy into kinetic energy through electromagnetic interaction to provide power for the entire locomotive (high-speed rail, subway). Generally, high-speed asynchronous traction motor rotors use guide bars embedded in the iron core and welded to the end rings. Therefore, the performance and quality of the guide bars directly affect the performance of the asynchronous traction motor.

[0003] Currently, rotor bar straightening mainly relies on manual straightening. The operator places the bar on a platform and presses it to check for twisting. One end of the twisted bar is clamped in a vise, and the other end is bent in the opposite direction of the twist with a wrench. After straightening, it is checked again on the platform. If twisting still exists, the process is repeated. Once straightened, straightening is performed. During straightening, the operator places the bar on the platform to observe the bending points and degree of bending. Then, the bar is placed on a straightening control panel and hammered with a rubber mallet to straighten it. After hammering, it is placed back on the platform for observation, and the hammering is repeated until the straightness is visually acceptable. Finally, a feeler gauge is used for measurement. If it passes the test, the bar is stacked and proceeds to the next process. If it fails, the straightening process is repeated. This method not only has a long production cycle, low production efficiency, and poor product quality consistency, but also low straightening accuracy and huge labor costs.

[0004] Therefore, a straightening device is needed to replace manual straightening. Existing straightening devices have a single straightening method and do not combine torsional straightening and linear straightening into an integrated and continuous process, resulting in low straightening accuracy and a high scrap rate of guide bars. At the same time, during the conversion between torsional straightening and linear straightening, the guide bars cannot be continuously clamped and fixed, requiring multiple measurements of relevant values, which reduces the efficiency of the straightening process. Summary of the Invention

[0005] To address the aforementioned problems, this invention provides a device and method for straightening the rotor guide bars of a rail transit motor.

[0006] The technical solution of the present invention is: a straightening device for rotor guide bars of a rail transit motor, comprising a mounting base plate with a mounting frame at the upper end, a mechanical gripper assembly located at the top of the inner side of the mounting frame, an automatic twisting assembly and an automatic straightening assembly located on the mounting base plate and distributed from left to right, and a floating clamping assembly located on the inner wall of the mounting frame.

[0007] The upper part of the mounting frame is provided with a first slide rail along the length direction. The mechanical gripper assembly is slidably connected to the first slide rail. The automatic twisting assembly includes a first storage box for storing unstraightened guide strips and a twisting machine provided on the mounting base plate for twisting and straightening the guide strips. The automatic straightening assembly includes a straightening machine provided on the mounting base plate for straightening the guide strips and a second storage box for storing straightened guide strips.

[0008] The upper end of the first storage box is provided with an automatic opening and closing cover. The first storage box is provided with multiple parallel placement slots, and each placement slot is provided with a clamping notch on the front and back sides. The side wall of the second storage box is provided with a sliding mounting cavity. A storage drawer is slidably connected in the sliding mounting cavity. A hydraulic cylinder that can drive the storage drawer to slide left and right is provided in the sliding mounting cavity.

[0009] The floating clamping assembly includes a second slide rail located on the rear side of the mounting frame and distributed opposite to the worktables of the twisting machine and the straightening machine; a U-shaped sliding mounting frame slidably connected to the second slide rail; a double-threaded mounting rod horizontally disposed within the U-shaped sliding mounting frame; two guide mounting strips connected to the left and right ends of the double-threaded mounting rod respectively via sliding blocks; and a miniature forward and reverse rotary motor for driving the double-threaded mounting rod to rotate. Each guide mounting strip is provided with a mounting port, and the front and rear sides of the mounting port are respectively connected to inverted T-shaped clamps via electric telescopic rods. The guide mounting strips and sliding blocks are perpendicular to each other and rotatably connected.

[0010] Furthermore, the inner wall of the first storage box is provided with a partition mounting frame, which divides the interior of the first storage box into a left box and a right box. The side wall of the partition mounting frame is evenly provided with multiple mounting strips from top to bottom. Each mounting strip is connected to a rotating placement plate by a micro motor. The height between two adjacent mounting strips is greater than the length of the rotating placement plate. The upper and lower ends of the rotating placement plate are respectively provided with multiple parallel placement slots.

[0011] Explanation: By setting placement slots at both ends of each rotating placement plate, guide strips can be stored in batches, greatly increasing the storage capacity of guide strips. After the mechanical gripper assembly grabs the guide strips located in the placement slots at the top of the rotating placement plate, the micro motor drives the installation strips to rotate, and the rotating placement plate will also rotate synchronously and flip over to be placed in the right box, so that the placement slot at the bottom of the rotating placement plate is in the upper position. Then the grabbing and straightening process is repeated. The above structure not only greatly increases the storage capacity of guide strips, but also makes reasonable use of space, ensures the normal operation of the straightening process, and increases the reliability of the device operation.

[0012] Furthermore, each of the placement slots is provided with a first anti-collision buffer layer, and the length of the rotating placement plate is equal to the length of the mounting strip.

[0013] Note: By setting a first anti-collision buffer layer, the guide strip can be prevented from being damaged by secondary impacts during the picking and placing process, thus avoiding material waste and protecting the guide strip.

[0014] Furthermore, there are multiple sliding mounting cavities, which are distributed from top to bottom on the side wall of the second storage box. Each sliding mounting cavity is slidably connected to a storage drawer, and the storage drawer is provided with an inclined pouring block. The inclined direction of the inclined pouring block is opposite to the sliding direction of the storage drawer, and the inner wall of the storage drawer is provided with a second anti-collision buffer layer.

[0015] Explanation: When the straightened guide strip is gripped by the mechanical gripper assembly and placed inside the second storage box, the hydraulic cylinder pushes the storage drawer out from the corresponding sliding mounting cavity, causing the guide strip to roll into the straight storage drawer via the inclined pouring block. When one storage drawer is full, the hydraulic cylinder compresses and drives the storage drawer to slide back into the corresponding sliding mounting cavity. Then, the above steps are repeated to open the next storage drawer for storing the guide strips that have undergone subsequent straightening. The above process is automatic and requires no human intervention, greatly increasing the storage capacity of the guide strips.

[0016] Furthermore, each of the guide mounting strips is provided with multiple mounting openings along its length, and each mounting opening is provided with two inverted T-shaped clamps. An abutting telescopic plate assembly is provided between the two inverted T-shaped clamps located on the same mounting opening. The abutting telescopic plate assembly includes a hollow sliding mounting frame vertically disposed at one end of one of the inverted T-shaped clamps and a sliding adjustment plate disposed on the other inverted T-shaped clamp and slidably connected to the inner wall of the hollow sliding mounting frame.

[0017] Explanation: By setting several mounting ports on each guide mounting strip, and setting two oppositely distributed inverted T-shaped clamps at each mounting port to hold the guide strip, the purpose is to process the guide strips in batches, which increases the operating efficiency of the device. The inverted T-shaped clamps at the opposite mounting ports on different guide mounting strips respectively clamp the left and right ends of the same guide strip. At the same time, by setting abutment telescopic plate assembly at the ends of the two oppositely distributed inverted T-shaped clamps, the left and right ends of the same guide strip can be abutted, which makes it easier to limit the position of the guide strip and avoid tilting caused by loose clamping, which would affect the straightening effect.

[0018] Furthermore, the positions of each abutting telescopic plate assembly on the left-side guide mounting strip are all located to the left of the corresponding two inverted T-shaped clamps, and the positions of each abutting telescopic plate assembly on the right-side guide mounting strip are all located to the right of the corresponding two inverted T-shaped clamps.

[0019] Explanation: By setting the abutment telescopic plate assemblies at the two inverted T-shaped clamps on the left and right sides in opposite positions, the purpose is to abut the left and right ends of the same guide bar, which facilitates the limitation of the guide bar's position and avoids tilting caused by loose clamping, thus affecting the straightening effect.

[0020] Furthermore, it also includes an intelligent control component, which includes a controller electrically connected to each electrical component, an infrared detector located at the mechanical gripper assembly and electrically connected to the controller, a gravity sensor located in the placement slot and electrically connected to the controller, and a pull-wire displacement sensor located on the guide mounting strip and electrically connected to the controller.

[0021] Description: The controller automates the operation of various electrical components. Infrared detectors check for guide bars on the worktables of the twisting and straightening machines to ensure timely operation. Gravity sensors detect the presence of guide bars in the placement slots to facilitate precise positioning and gripping of the mechanical gripper assembly, increasing its reliability. A wire displacement sensor monitors the distance between two guide mounting strips in real time, facilitating clamping of the ends of guide bars of different lengths and ensuring proper contact between the ends, thus improving the straightening effect.

[0022] Furthermore, the controller calculates the straightness based on the actual eccentricity data collected by the straightening machine. The straightening machine uses an internationally advanced floating measurement algorithm to obtain the straightness of the workpiece. Its basic principle comes from the study of "three-dimensional rigid body motion in space". The controller obtains the new theoretical center line of the workpiece based on the straightening machine, calculates the actual runout data of the theoretical center line of the straightening machine, and automatically determines the position to be straightened.

[0023] This invention also discloses a method for straightening the rotor guide bars of a rail transit motor, based on the aforementioned device for straightening the rotor guide bars of a rail transit motor, comprising the following steps:

[0024] S1. Open the automatic opening and closing cover, place the guide strips that need to be straightened in each placement slot. When each guide strip needs to be straightened, the mechanical gripper assembly rotates to a position parallel to each placement slot and picks up the guide strips in each placement slot. Then, the mechanical gripper assembly slides to the right on the first slide rail until it is located at the top of the twisting machine.

[0025] S2. Push the U-shaped sliding mounting bracket to slide within the second slide rail until it is positioned at the top of the twisting machine. Then, the mechanical gripper assembly rotates automatically to a position parallel to the horizontal direction of the twisting machine and places the guide strip on the working platform of the twisting machine. Next, depending on the length of the guide strip, start the micro forward and reverse rotation motor to rotate forward or reverse. The micro forward and reverse rotation motor drives the double threaded mounting rod to rotate. At this time, the sliding blocks at the left and right ends of the double threaded mounting rod move closer or further away from each other, and the guide mounting strip moves synchronously. When the guide mounting strip is at the left and right ends of the guide strip, start the electric telescopic rods on the front and rear sides of the mounting openings on the two guide mounting strips. Use the extension action of the electric telescopic rods to drive the two inverted T-shaped clamps that are relatively distributed to clamp the guide strip. After both ends of the guide strip are clamped and fixed, use the twisting machine to straighten and align the guide strip.

[0026] S3. After the straightening process is completed, push the U-shaped sliding mounting bracket to slide in the second slide rail until it is located at the top of the straightening machine. During this process, the inverted T-shaped clamps hold the guide strip. The straightening machine straightens the guide strip. After the process is completed, the compression action of the electric telescopic rod drives the two relatively distributed inverted T-shaped clamps to move away from each other and release the guide strip. Then, the mechanical gripper assembly picks up the guide strip and places it in the second storage box.

[0027] Compared with the prior art, the beneficial effects of the present invention are:

[0028] The motor rotor guide bar straightening device of the present invention uses a twisting machine and a straightening machine to perform twisting and straightening and straightening of the guide bar respectively, replacing manual processing, liberating productivity, improving production efficiency, improving the working environment of workers, and achieving higher straightening accuracy and better consistency, reducing the scrap rate of guide bars and improving material utilization. At the same time, during the twisting and straightening and straightening processes, a floating clamping assembly is used to continuously clamp and fix the guide bar. When the pressure head of the straightening machine returns and disengages from the guide bar, the straightening machine can quickly calculate whether the straightening has achieved the expected result based on the position of its own sensor, without having to rotate and measure again, shortening the straightening time and improving work efficiency. In addition, the floating clamping assembly of the present invention can clamp the guide bar in batches, increasing the device's operating effect. Meanwhile, the left and right ends of the same guide bar are abutted by an abutment telescopic plate assembly, which facilitates the limitation of the guide bar's position and avoids tilting caused by loose clamping, which would affect the straightening effect. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0030] Figure 2 This is a top view of the floating clamping assembly of the present invention during installation on the mounting frame;

[0031] Figure 3This is a side view of the floating clamping assembly of the present invention during installation on the mounting frame;

[0032] Figure 4 This is a schematic diagram of the structure of the hollow sliding mounting frame and the sliding adjustment plate when the telescopic plate assembly of the present invention is connected during installation.

[0033] Figure 5 This is a schematic diagram of the structure of the hollow sliding mounting frame and the sliding adjustment plate when the abutting telescopic plate assembly of the present invention is separated;

[0034] Figure 6 This is a schematic diagram of the internal structure of the first storage box of the present invention;

[0035] Figure 7 This is an internal top view of the first storage box of the present invention;

[0036] Figure 8 This is a schematic diagram of the internal structure of the second storage box of the present invention.

[0037] Among them, 1-mounting base plate, 10-mounting frame, 100-first slide rail, 2-mechanical gripper assembly, 3-automatic twisting assembly, 30-first storage box, 300-automatic opening and closing cover, 301-placement slot, 302-clamping notch, 303-left box, 304-right box, 305-first anti-collision buffer layer, 31-twisting machine, 32-separated mounting frame, 33-mounting strip, 330-rotating placement plate, 340-micro motor, 4-automatic straightening assembly, 40-straightening machine, 41-second storage box 410-Sliding mounting cavity, 411-Storage drawer, 412-Hydraulic cylinder, 413-Inclined pouring block, 414-Second anti-collision buffer layer, 5-Floating clamping assembly, 50-Second slide rail, 51-U-shaped sliding mounting bracket, 52-Double threaded mounting rod, 53-Guide mounting strip, 530-Sliding block, 531-Mounting port, 532-Electric telescopic rod, 533-Inverted T-shaped clamping plate, 54-Miniature forward and reverse rotation motor, 55-Abutting telescopic plate assembly, 550-Hollow sliding mounting frame, 551-Sliding adjustment plate. Detailed Implementation

[0038] To further understand the content of the present invention, the present invention will be described in detail below through embodiments.

[0039] Example 1

[0040] like Figure 1 As shown, a straightening device for a motor rotor guide bar for rail transit includes a mounting base plate 1 with a mounting frame 10 at the upper end, a mechanical gripper assembly 2 located at the top of the inside of the mounting frame 10, an automatic twisting assembly 3 and an automatic straightening assembly 4 located on the mounting base plate 1 and distributed from left to right, and a floating clamping assembly 5 located on the inner wall of the mounting frame 10.

[0041] The upper part of the mounting frame 10 is provided with a first slide rail 100 along the length direction. The mechanical gripper assembly 2 is slidably connected to the first slide rail 100. The automatic twisting assembly 3 includes a first storage box 30 for storing unstraightened guide strips and a twisting machine 31 set on the mounting base plate 1 for twisting and straightening the guide strips. The automatic straightening assembly 4 includes a straightening machine 40 set on the mounting base plate 1 for straightening the guide strips and a second storage box 41 for storing straightened guide strips.

[0042] The first storage box 30 is provided with an automatic opening and closing cover 300 at the upper end. The first storage box 30 is provided with three parallel placement slots 301, and each placement slot 301 is provided with a clamping notch 302 on the front and rear sides. The second storage box 41 is provided with a sliding mounting cavity 410 on the side wall. A storage drawer 411 is slidably connected in the sliding mounting cavity 410. A hydraulic cylinder 412 is provided in the sliding mounting cavity 410 to drive the storage drawer 411 to slide left and right.

[0043] The floating clamping assembly 5 includes a second slide rail 50 located on the rear side of the mounting frame 10 and distributed opposite to the worktables of the twisting machine 31 and the straightening machine 40, a U-shaped sliding mounting frame 51 slidably connected to the second slide rail 50, a double-threaded mounting rod 52 horizontally located in the U-shaped sliding mounting frame 51, two guide mounting strips 53 connected to the left and right ends of the double-threaded mounting rod 52 respectively via sliding blocks 530, and a miniature forward and reverse rotary motor 54 that drives the double-threaded mounting rod 52 to rotate. Each guide mounting strip 53 is provided with a mounting port 531, and the front and rear sides of the mounting port 531 are respectively connected to an inverted T-shaped clamping plate 533 via an electric telescopic rod 532. The guide mounting strips 53 and the sliding blocks 530 are perpendicular to each other and rotatably connected.

[0044] Among them, the mechanical gripper assembly 2, the twisting machine 31, the straightening machine 40, the automatic opening and closing cover 300, the hydraulic cylinder 412, the micro forward and reverse rotation motor 54, and the electric telescopic rod 532 all adopt existing technologies.

[0045] Example 2

[0046] This embodiment discloses a method for straightening the rotor guide bars of a rail transit motor, based on a rail transit motor rotor guide bar straightening device of Embodiment 1, including the following steps:

[0047] S1. Open the automatic opening and closing cover 300, place the guide strips to be straightened in each placement slot 301. When each guide strip needs to be straightened, the mechanical gripper assembly 2 rotates to a position parallel to each placement slot 301 and picks up the guide strips in each placement slot 301. Then, the mechanical gripper assembly 2 slides to the right on the first slide rail 100 until it is located at the upper end of the twisting machine 31.

[0048] S2. Push the U-shaped sliding mounting bracket 51 to slide within the second slide rail 50 until it is located at the upper end of the twisting machine 31. Then, the mechanical gripper assembly 2 rotates to a position parallel to the horizontal direction of the twisting machine 31 and places the guide bar on the working platform of the twisting machine 31. Next, according to the length of the guide bar, start the micro forward and reverse rotation motor 54 to rotate forward or reverse. The micro forward and reverse rotation motor 54 drives the double threaded mounting rod 52 to rotate. At this time, the sliding blocks 530 located at the left and right ends of the double threaded mounting rod 52 move closer or further away from each other, and the guide mounting strip 53 also moves synchronously. When the guide mounting strip 53 is located at the left and right ends of the guide bar, start the electric telescopic rods 532 on the front and rear sides of the mounting opening 531 on the two guide mounting strips 53. Use the extension of the electric telescopic rods 532 to drive the two inverted T-shaped clamps 533 that are relatively distributed to clamp the guide bar. After the left and right ends of the guide bar are clamped and fixed, use the twisting machine 31 to straighten the guide bar.

[0049] S3. After the straightening process is completed, push the U-shaped sliding mounting bracket 51 to slide in the second slide rail 50 until it is located at the upper end of the straightening machine 40. During this process, the inverted T-shaped clamp 533 keeps clamping the guide strip. The straightening machine 40 is used to straighten the guide strip. After the process is completed, the compression action of the electric telescopic rod 532 is used to drive the two relatively distributed inverted T-shaped clamps 533 to move away from each other and release the guide strip. Then, the mechanical gripper assembly 2 is used to pick up the guide strip and place it in the second storage box 41.

[0050] Example 3

[0051] The difference between this embodiment and Embodiment 1 is that:

[0052] The inner wall of the first storage box 30 is provided with a partition mounting frame 32, which divides the interior of the first storage box 30 into a left box 303 and a right box 304. The side wall of the partition mounting frame 32 is evenly provided with three mounting strips 33 from top to bottom. Each mounting strip 33 is rotatably connected to a rotating placement plate 330 by a micro motor 340. The height between two adjacent mounting strips 33 is greater than the length of the rotating placement plate 330. The upper and lower ends of the rotating placement plate 330 are respectively provided with three parallel placement slots 301.

[0053] Each placement slot 301 is provided with a first anti-collision buffer layer 305, and the length of the rotating placement plate 330 is equal to the length of the mounting strip 33;

[0054] Among them, the micro motor 340 adopts existing technology.

[0055] Example 4

[0056] The difference between this embodiment and Embodiment 2 is that:

[0057] By setting placement slots 301 at both the top and bottom of each rotating placement plate 330, guide strips can be stored in batches. When the mechanical gripper assembly 2 grabs the guide strips located in each placement slot 301 at the top of the rotating placement plate 330, the micro motor 340 drives the mounting strip 33 to rotate, and the rotating placement plate 330 will also rotate synchronously and flip over to be placed in the right box 304, so that the placement slot 301 at the bottom of the rotating placement plate 330 is in the top position. Then the grabbing and straightening process is repeated.

[0058] The first anti-collision buffer layer 305 is set to protect the guide strip.

[0059] Example 5

[0060] The difference between this embodiment and Embodiment 3 is that:

[0061] There are four sliding mounting cavities 410, which are distributed from top to bottom on the side wall of the second storage box 41. Each sliding mounting cavity 410 is slidably connected to a storage drawer 411, and the storage drawer 411 is provided with an inclined pouring block 413. The inclined direction of the inclined pouring block 413 is opposite to the sliding direction of the storage drawer 411, and the inner wall of the storage drawer 411 is provided with a second anti-collision buffer layer 414.

[0062] Example 6

[0063] The difference between this embodiment and embodiment 4 is that:

[0064] When the straightened guide strip is picked up by the mechanical gripper assembly 2 and placed inside the second storage box 41, the hydraulic cylinder 412 pushes the storage drawer 411 out of the corresponding sliding mounting cavity 410, causing the guide strip to roll into the straight storage drawer 411 via the inclined pouring block 413. When one of the storage drawers 411 is full, the compression action of the hydraulic cylinder 412 drives the storage drawer 411 to slide back into the corresponding sliding mounting cavity 410. Then, the above steps are repeated to open the next storage drawer 411 to store the guide strips after subsequent straightening.

[0065] Example 7

[0066] The difference between this embodiment and embodiment 5 is that:

[0067] Each guide mounting strip 53 has three mounting openings 531 along its length. Each mounting opening 531 has two inverted T-shaped clamps 533. An abutting telescopic plate assembly 55 is provided between the two inverted T-shaped clamps 533 located in the same mounting opening 531. The abutting telescopic plate assembly 55 includes a hollow sliding mounting frame 550 vertically disposed at one end of one of the inverted T-shaped clamps 533 and a sliding adjustment plate 551 disposed on the other inverted T-shaped clamp and slidably connected to the inner wall of the hollow sliding mounting frame 550.

[0068] The positions of each abutting telescopic plate assembly 55 on the guide mounting strip 53 on the left are all located to the left of the corresponding two inverted T-shaped clamps 533, and the positions of each abutting telescopic plate assembly 55 on the guide mounting strip 53 on the right are all located to the right of the corresponding two inverted T-shaped clamps 533.

[0069] Example 6

[0070] The difference between this embodiment and embodiment 4 is that:

[0071] By setting several mounting ports 531 on each guide mounting strip 53, and setting two oppositely distributed inverted T-shaped clamps 533 at each mounting port 531 to clamp the guide strip, the purpose is to process the guide strips in batches. The inverted T-shaped clamps 533 at the opposite mounting ports 531 on different guide mounting strips 53 respectively clamp the left and right ends of the same guide strip. At the same time, by setting the abutting telescopic plate assemblies 55 at the two inverted T-shaped clamps 533 on the left and right sides in opposite positions, the left and right ends of the same guide strip can be abutted, which facilitates the determination of the position of the guide strip.

[0072] Example 7

[0073] The difference between this embodiment and embodiment 5 is that:

[0074] It also includes an intelligent control component 6, which includes a controller 60 electrically connected to each electrical component, an infrared detector 61 located at the mechanical gripper assembly 2 and electrically connected to the controller 60, a gravity sensor 62 located in the placement slot 301 and electrically connected to the controller 60, and a pull wire displacement sensor 63 located on the guide mounting strip 53 and electrically connected to the controller 60.

[0075] Among them, the controller 60, infrared detector 61, gravity sensor 62 and wire displacement sensor 63 all adopt existing technologies.

[0076] Example 8

[0077] The difference between this embodiment and embodiment 6 is that:

[0078] The controller 60 controls the automated operation of various electrical components. The infrared detector 61 detects whether there are guide bars on the worktables of the twisting machine 31 and the straightening machine 40. The gravity sensor 62 detects whether there are guide bars in the placement groove 301 to facilitate the precise positioning and gripping of the guide bars by the mechanical gripper assembly 2, thereby increasing the reliability of the operation of the mechanical gripper assembly 2. The distance between the two guide mounting bars 53 is detected in real time by the pull wire displacement sensor 63.

Claims

1. A device for straightening rotor bars of a rail transit motor, characterized in that, It includes a mounting base plate (1) with a mounting frame (10) at the top, a mechanical gripper assembly (2) located at the top of the mounting frame (10), an automatic twisting assembly (3) and an automatic straightening assembly (4) located on the mounting base plate (1) and distributed from left to right, and a floating clamping assembly (5) located on the inner wall of the mounting frame (10). The upper part of the mounting frame (10) is provided with a first slide rail (100) along the length direction. The mechanical gripper assembly (2) is slidably connected to the first slide rail (100). The automatic twisting assembly (3) includes a first storage box (30) for storing un-straightened guide strips and a twisting machine (31) provided on the mounting base plate (1) for twisting and straightening the guide strips. The automatic straightening assembly (4) includes a straightening machine (40) provided on the mounting base plate (1) for straightening the guide strips and a second storage box (41) for storing the straightened guide strips. The first storage box (30) is provided with an automatic opening and closing cover (300) at the upper end. The first storage box (30) is provided with a plurality of parallel placement slots (301), and each placement slot (301) is provided with a clamping notch (302) on the front and rear sides. The second storage box (41) is provided with a sliding mounting cavity (410) on the side wall. A storage drawer (411) is slidably connected in the sliding mounting cavity (410). A hydraulic cylinder (412) is provided in the sliding mounting cavity (410) to drive the storage drawer (411) to slide left and right. The floating clamping assembly (5) includes a second slide rail (50) located on the rear side of the mounting frame (10) and distributed opposite to the worktables of the twisting machine (31) and the straightening machine (40), a U-shaped sliding mounting frame (51) slidably connected to the second slide rail (50), a double-threaded mounting rod (52) horizontally located in the U-shaped sliding mounting frame (51), two guide mounting strips (53) connected to the left and right ends of the double-threaded mounting rod (52) respectively via sliding blocks (530), and a miniature forward and reverse rotation motor (54) for driving the double-threaded mounting rod (52) to rotate. Each guide mounting strip (53) is provided with a mounting port (531), and the front and rear sides of the mounting port (531) are respectively connected to an inverted T-shaped clamp (533) via an electric telescopic rod (532). The guide mounting strip (53) and the sliding block (530) are perpendicularly distributed to each other and rotatably connected.

2. The straightening device for rotor guide bars of a rail transit motor according to claim 1, characterized in that, The inner wall of the first storage box (30) is provided with a partition mounting frame (32), which divides the interior of the first storage box (30) into a left box (303) and a right box (304). The side wall of the partition mounting frame (32) is evenly provided with multiple mounting strips (33) from top to bottom. Each mounting strip (33) is rotatably connected to a rotating placement plate (330) by a micro motor (340). The height between two adjacent mounting strips (33) is greater than the length of the rotating placement plate (330). The upper and lower ends of the rotating placement plate (330) are respectively provided with multiple parallel placement slots (301).

3. A rotor guide bar straightening device for rail transit motors according to claim 2, characterized in that, Each of the placement slots (301) is provided with a first anti-collision buffer layer (305), and the length of the rotating placement plate (330) is equal to the length of the mounting strip (33).

4. A rotor guide bar straightening device for rail transit motors according to claim 1, characterized in that, There are multiple sliding mounting cavities (410), which are distributed from top to bottom on the side wall of the second storage box (41). Each sliding mounting cavity (410) is slidably connected to a storage drawer (411), and the storage drawer (411) is provided with an inclined pouring block (413). The inclined direction of the inclined pouring block (413) is opposite to the sliding direction of the storage drawer (411), and the inner wall of the storage drawer (411) is provided with a second anti-collision buffer layer (414).

5. A rotor guide bar straightening device for rail transit motors according to claim 1, characterized in that, Each of the guide mounting strips (53) has multiple mounting openings (531) along its length. Each mounting opening (531) has two inverted T-shaped clamps (533). An abutting telescopic plate assembly (55) is provided between the two inverted T-shaped clamps (533) located in the same mounting opening (531). The abutting telescopic plate assembly (55) includes a hollow sliding mounting frame (550) vertically disposed at one end of one of the inverted T-shaped clamps (533) and a sliding adjustment plate (551) disposed on the other inverted T-shaped clamp (533) and slidably connected to the inner wall of the hollow sliding mounting frame (550).

6. A rotor guide bar straightening device for rail transit motors according to claim 5, characterized in that, The positions of each abutting telescopic plate assembly (55) on the guide mounting strip (53) on the left side are all located to the left of the corresponding two inverted T-shaped clamps (533), and the positions of each abutting telescopic plate assembly (55) on the guide mounting strip (53) on the right side are all located to the right of the corresponding two inverted T-shaped clamps (533).

7. A rotor guide bar straightening device for rail transit motors according to claim 1, characterized in that, It also includes an intelligent control component (6), which includes a controller (60) electrically connected to each electrical component, an infrared detector (61) located at the mechanical gripper assembly (2) and electrically connected to the controller (60), a gravity sensor (62) located in the placement slot (301) and electrically connected to the controller (60), and a pull wire displacement sensor (63) located on the guide mounting strip (53) and electrically connected to the controller (60).

8. A rotor guide bar straightening device for rail transit motors according to claim 7, characterized in that, The controller (60) calculates the straightness based on the actual eccentricity data collected by the straightening machine (40). The controller (60) obtains the new theoretical center line of the workpiece based on the straightening machine (40), calculates the actual runout data of the theoretical center line of the straightening machine (40), and automatically determines the position to be straightened.

9. A method for straightening the rotor guide bars of a rail transit motor, based on the straightening device for the rotor guide bars of a rail transit motor according to any one of claims 1-8, characterized in that, Includes the following steps: S1. Open the automatic opening and closing cover (300), place the guide strips that need to be straightened in each placement slot (301). When each guide strip needs to be straightened, the mechanical gripper assembly (2) rotates to a position parallel to each placement slot (301) and picks up the guide strips in each placement slot (301). Then, the mechanical gripper assembly (2) slides to the right on the first slide rail (100) until it is located at the top of the twisting machine (31). S2. Push the U-shaped sliding mounting bracket (51) to slide within the second slide rail (50) until it is located at the upper end of the twisting machine (31). Then, the mechanical gripper assembly (2) rotates to a position parallel to the horizontal direction of the twisting machine (31) and places the guide bar on the working platform of the twisting machine (31). Next, depending on the length of the guide bar, start the micro forward and reverse rotation motor (54) to rotate forward or reverse. The micro forward and reverse rotation motor (54) drives the double threaded mounting rod (52) to rotate. At this time, the double threaded mounting rod (52) is located to the left of the double threaded mounting rod (52). The sliding blocks (530) at both ends of the right move closer or further apart, and the guide mounting strip (53) moves synchronously. When the guide mounting strip (53) is located at the left and right ends of the guide strip, the electric telescopic rods (532) on the front and rear sides of the mounting opening (531) on the two guide mounting strips (53) are activated. The extension of the electric telescopic rods (532) drives the two inverted T-shaped clamps (533) that are relatively distributed to clamp the guide strip. When both ends of the guide strip are clamped and fixed, the guide strip is straightened by the twisting machine (31). S3. After the straightening process is completed, push the U-shaped sliding mounting bracket (51) to slide in the second slide rail (50) until it is located at the upper end of the straightening machine (40). During this process, the inverted T-shaped clamp (533) clamps the guide strip. The straightening machine (40) straightens the guide strip. After the process is completed, the compression action of the electric telescopic rod (532) drives the two relatively distributed inverted T-shaped clamps (533) to move away from each other and release the guide strip. Then, the mechanical gripper assembly (2) picks up the guide strip and places it in the second storage box (41).

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