Automatic slotting tool for train brake shoe

Abstract

The utility model relates to railway parts processing and manufacturing technical field, concretely relates to a kind of automatic grooving tool for train shoe, including workbench, controller, lifting device, cutting assembly, horizontal displacement component and clamping assembly, lifting device includes lifting guide rail, lifting platform and first driving device, lifting platform is slidably installed on workbench by lifting guide rail, moves up and down under the drive of first driving device;Cutting assembly includes second driving device and cutting wheel, cutting wheel is installed on lifting platform and is driven to rotate by second driving device;Horizontal displacement component includes third driving device, mounting plate and slide rail, mounting plate is slidably installed on workbench by slide rail, third driving device is used to drive mounting plate to move back and forth;Clamping assembly includes support seat, positioning baffle and taut cylinder, for fixing shoe;The device can complete batch cutting of shoe, while improving shoe cutting efficiency, improve the cutting accuracy of shoe.

Description

Technical Field

[0001] This utility model relates to the field of railway component processing and manufacturing technology, specifically to an automatic grooving tool for train brake shoes. Background Technology

[0002] Train braking employs various methods, including resistance braking, magnetic track braking, eddy current braking, and friction braking, with friction braking being indispensable. Friction braking converts kinetic energy into heat energy through friction, which is then dissipated into the atmosphere. Trains typically use disc brakes and wheel brakes. Disc brakes utilize the friction between the brake disc and brake pads to dissipate the train's kinetic energy, while wheel brakes utilize the friction between the wheels and brake shoes. Currently, most high-speed trains use disc brakes, while ordinary passenger and freight trains, and large track maintenance machinery, mostly use wheel brakes.

[0003] Brake shoes, used in ordinary passenger and freight trains, large track maintenance machinery, and other braking products, occupy a large market share. The appearance and size of brake shoes vary depending on the train model. To achieve better chip removal and heat dissipation during friction braking, the center of the brake shoe usually has a groove. The precision of the groove has a significant impact on the braking performance and service life of the brake shoe.

[0004] For example, Chinese patent document CN221791210U discloses a brake shoe grooving device. This device includes a support frame, a U-shaped plate fixed to the support frame and connected to a top plate via several columns, a grooving mechanism on the top plate, a brake shoe within the U-shaped plate, and two movable rods connected to both sides of the U-shaped plate, each with a connecting plate. One end of each movable rod is fixed with a clamping block, and the other end is fixedly connected to the connecting plate. A sliding rod is fixed to the bottom of each connecting plate. The support frame also has two arc-shaped grooves and a first ring plate, a driving mechanism, and a second ring plate on its inner bottom surface. The first ring plate has two groove openings, and the sliding rod connects to the groove openings. Several first toothed racks are fixed to the side of the second ring plate and are fixedly connected to the first ring plate via several connecting rods. Using this device, the brake shoe is well-fixed, preventing displacement during grooving and thus ensuring grooving accuracy.

[0005] However, the above-mentioned device still has certain drawbacks: when in use, the device can only complete the grooving operation of one brake shoe at a time, and cannot perform multiple brake shoe cutting operations at the same time, resulting in low cutting efficiency. In addition, the brake shoes are placed manually and suspended between two clamping blocks, so the cutting depth accuracy cannot be guaranteed, which has a significant impact on the service life of the brake shoes. Utility Model Content

[0006] This utility model provides an automatic grooving fixture for train brake shoes to solve the technical problem of low cutting efficiency of existing brake shoe grooving devices.

[0007] To solve the above problems, the present invention provides an automatic grooving fixture for train brake shoes, which adopts the following technical solution:

[0008] An automatic grooving fixture for train brake shoes includes a worktable, a lifting device, and a cutting assembly. The lifting device is used to drive the cutting assembly to move up and down on the worktable. It also includes a controller, a horizontal displacement assembly, and a clamping assembly. The horizontal displacement assembly includes a third driving device, a mounting plate, and a slide rail. The mounting plate is slidably mounted on the worktable via the slide rail. The third driving device is used to drive the mounting plate to move back and forth. This utility model discloses an automatic grooving fixture for train brake shoes. By setting up a lifting device, the cutting component can move up and down. In addition, by setting up a mounting plate, slide rail and third drive device, multiple brake shoes fixed on the mounting plate by a clamping device can move back and forth. This allows the cutting component to move relative to the brake shoes in both up and down and back and forth directions, thereby completing the batch cutting of multiple brake shoes and improving the cutting efficiency of brake shoes. Furthermore, by setting up a controller, the cutting accuracy of brake shoes can be improved.

[0009] The clamping assembly is located on the mounting plate and includes a support base, a positioning baffle, and a clamping cylinder. The support base is used to support the brake shoes, and the clamping cylinder is used to cooperate with the positioning baffle to clamp the brake shoes. The controller is electrically connected to the cutting assembly, lifting device, horizontal displacement assembly, and clamping assembly.

[0010] Furthermore, the lifting device includes a lifting guide rail, a lifting platform, and a first driving device. The lifting platform is slidably mounted on the worktable via the lifting guide rail, and the first driving device is used to drive the lifting platform to move up and down.

[0011] Furthermore, the cutting assembly includes a second drive device and a cutting wheel, the cutting wheel being mounted on the lifting platform and driven to rotate by the second drive device.

[0012] Furthermore, the workbench is characterized in that it includes an upper support, an upper platform, a lower support, and a lower platform, with the lower platform fixed to the top of the lower support, the upper support fixed to the lower platform, and the upper platform fixed to the top of the upper support.

[0013] Furthermore, there are multiple lifting guide rails, each of which is arranged in parallel along the vertical direction between the upper and lower platforms, and the mounting plate is slidably mounted on each lifting guide rail.

[0014] Furthermore, the first driving device is a worm gear screw jack, which is installed on the upper platform in the vertical direction, and the lower end of the screw is fixedly connected to the lifting platform.

[0015] Furthermore, the second driving device is a rotary motor, which is fixed on the lifting platform. The cutting wheel is rotatably installed below the lifting platform, and the output end of the rotary motor is connected to the wheel axle of the cutting wheel via belt drive.

[0016] Furthermore, the third driving device is a stepper motor, which is mounted on the lower platform. The slide rail is mounted on the lower platform in the front-to-back direction. The horizontal displacement assembly also includes a nut and a lead screw extending in the front and back. The lead screw is connected to the output end of the stepper motor via belt drive. The nut is fixed on the lower side of the mounting plate and sleeved on the lead screw to drive the mounting plate to move back and forth.

[0017] Furthermore, the clamping assembly also includes multiple cylinder seats, the cylinder seats and the positioning baffle are respectively fixed to the front end and the rear end of the mounting plate, the support seat is located between the positioning baffle and the cylinder seats, the positioning baffle is used to stop the brake shoes, and the clamping cylinder is installed on the cylinder seats.

[0018] Furthermore, the controller has a touch screen.

[0019] The beneficial effects of the automatic grooving fixture for train brake shoes provided by this utility model are: 1. The automatic grooving fixture for train brake shoes of this utility model is equipped with a lifting device to enable the cutting component to move up and down. In addition, by setting up a mounting plate, slide rail and third drive device, multiple brake shoes fixed on the mounting plate by the clamping device can move back and forth. This allows the cutting component to move relative to the brake shoes in both up and down and back and forth directions, thereby completing the batch cutting of multiple brake shoes and improving the cutting efficiency of brake shoes. Furthermore, by setting up a controller, the cutting accuracy of brake shoes can be improved.

[0020] 2. By using a worm gear screw jack as the primary drive device, the vertical movement accuracy of the lifting platform can be improved, thereby improving the cutting accuracy of the brake shoes. Attached Figure Description

[0021] Figure 1 A schematic diagram of the structure of an automatic grooving fixture for train brake shoes provided by this utility model. Figure 1 ; Figure 2 for Figure 1 A magnified view of a portion of point A in the middle; Figure 3 A schematic diagram of the structure of an automatic grooving fixture for train brake shoes provided by this utility model. Figure 2 ; Figure 4 A front view of an automatic grooving fixture for train brake shoes provided by this utility model; Figure 5A side view of an automatic grooving fixture for train brake shoes provided by this utility model.

[0022] Explanation of reference numerals in the attached figures: 1. Workbench; 11. Lower support; 12. Lower table plate; 13. Upper support; 14. Upper table plate; 2. Controller; 3. Lifting device; 31. Worm gear screw jack; 32. Lifting screw; 33. Lifting platform; 34. Lifting guide rail; 4. Cutting assembly; 41. Rotating motor; 42. Cutting wheel; 43. Wheel base; 5. Horizontal displacement assembly; 51. Slide rail; 52. Mounting plate; 53. Stepper motor; 54. Lead screw; 55. Nut; 6. Clamping assembly; 61. Support base; 62. Positioning baffle; 63. Cylinder seat; 64. Tightening cylinder; 65. Clearance groove; 7. Start button; 8. Stop button; 9. Brake shoe. Detailed Implementation

[0023] The principles and spirit of this utility model will be explained in detail below with reference to several representative embodiments.

[0024] Embodiment 1 of an automatic grooving fixture for train brake shoes provided by this utility model: like Figures 1 to 5 As shown, an automatic grooving fixture for train brake shoes 9 according to this utility model includes a worktable 1, a controller 2, a lifting device 3, a cutting assembly 4, a horizontal displacement assembly 5, and a clamping assembly 6. The worktable 1 includes a lower support 11, a lower plate 12, an upper support 13, and an upper plate 14. The lower support 11 is a rectangular frame with pulleys at its lower end for easy movement. The lower plate 12 is a horizontally extending rectangular plate fixed to the upper end of the lower support 11. The upper support 13 is a rectangular frame fixed to the lower plate 12. The upper plate 14 is a horizontally extending rectangular plate fixed to the upper end of the upper support 13.

[0025] The controller 2 is a computer, mounted on the upper platform 14, and features a touchscreen for ease of use. The cutting assembly 4 is mounted on the lifting device 3 for cutting the brake shoe 9. The lifting device 3 is located between the upper platform 14 and the lower platform 12 to move the lifting device 3 up and down. The clamping assembly 6 is used to fix the brake shoe 9. The clamping assembly 6 is mounted on the horizontal displacement assembly 5, which is mounted on the lower platform 12, and moves the clamping assembly 6 back and forth.

[0026] The following section will first introduce the lifting device 3, such as... Figure 1 and Figure 4As shown, the lifting device 3 includes a first driving device, a lifting platform 33, and lifting guide rails 34. The first driving device is a worm gear screw jack 31, whose motor is mounted on the upper platform 14. The lifting screw 32 of the worm gear screw jack 31 is mounted on the output end of the motor in the vertical direction and rotates around its axis under the drive of the motor. There are four lifting guide rails 34, with their upper and lower ends fixed to the upper platform 14 and the lower platform 12, respectively. Each lifting guide rail 34 is arranged in parallel in the vertical direction. The lifting platform 33 is a horizontally extending rectangular plate, with its four corners slidingly fitted onto each lifting guide rail 34. The lower end of the lifting screw 32 is fixedly connected to the lifting platform 33 to drive the lifting platform 33 to move up and down.

[0027] The following describes cutting component 4, such as... Figure 1 , Figure 4 and Figure 5 As shown, the cutting assembly 4 includes a second drive device, a cutting wheel 42, and a wheel seat 43. The second drive device is a rotary motor 41, which is mounted on the upper side of the lifting platform 33. The wheel seat 43 is fixed to the lower side of the lifting platform 33. The cutting wheel 42 is a circular wheel, which is rotatably mounted on the wheel seat 43 via its axle. The output end of the rotary motor 41 and the axle of the cutting wheel 42 are connected by a belt drive to provide the driving force for the rotation of the cutting wheel 42.

[0028] The horizontal displacement component 5 is described below, such as... Figure 1 , Figure 2 and Figure 5 As shown, the horizontal displacement assembly 5 includes a third driving device, a mounting plate 52, a slide rail 51, a lead screw 54, and a nut 55. There are two slide rails 51, installed on the left and right sides of the lower platform 12 respectively, extending in the front-back direction. The mounting plate 52 is a horizontally extending rectangular plate, slidably mounted on the slide rails 51 via a slider. The third driving device is a stepper motor 53, mounted on the lower platform 12. The lead screw 54 is mounted on the lower platform 12, rotating around its front-back axis. The output end of the stepper motor 53 is connected to the front end of the lead screw 54 via a belt drive. The nut 55 is sleeved on the lead screw 54 and fixedly mounted on the lower side of the mounting plate 52. Driven by the stepper motor 53, the mounting plate 52 can move back and forth on the slide rails 51.

[0029] The clamping mechanism is described below, such as... Figures 1 to 4As shown, the clamping mechanism includes a positioning baffle 62, a cylinder seat 63, a clamping cylinder 64, and a support base 61. The positioning baffle 62 is a rectangular plate that extends laterally and is fixed to the rear end of the mounting plate 52 to stop the brake shoe 9. There are two cylinder seats 63, which are fixed to the front end of the mounting plate 52. There are also two clamping cylinders 64, which are mounted on corresponding cylinder seats 63. The output end of the clamping cylinder 64 faces the positioning baffle 62 and is used to clamp the brake shoe 9. The support base 61 is a metal frame that extends front to back, and its upper surface matches the arc surface of the brake shoe 9 for easy placement of the brake shoe 9. The positioning baffle 62 has a front to back extending clearance groove 65 in the middle to allow the cutting wheel 42 to pass through when cutting the brake shoe 9.

[0030] The rotating motor 41, the clamping cylinder 64, the motor and the stepper motor 53 are all connected to the controller 2 by wires. The controller 2 has a control program to realize the automatic control and parameter adjustment of the brake shoe 9 cutting. The front side of the lower platform 12 is provided with a start button 7 and a stop button 8.

[0031] The working principle of an automatic grooving fixture for train brake shoes is summarized as follows: Multiple brake shoes 9 are placed side by side on the support base 61. Then, the controller 2 controls the clamping cylinders 64 to extend backward, and the brake shoes 9 are fixed between the clamping cylinders 64 and the positioning baffle 62 by the push of the clamping cylinders 64. Then, the motor speed, lifting height and other parameters are set through the touch screen, and then the start button is double-clicked to start the cutting operation.

[0032] First, the rotary motor 41 drives the cutting wheel 42 to rotate. Then, driven by the worm gear screw jack 31, the cutting wheel 42 moves downward. After reaching the set height, the cutting wheel 42 stops moving. Then, driven by the stepper motor 53, the brake shoe 9 moves back and forth with the mounting plate 52 to complete the grooving cutting of all brake shoes 9. After cutting is completed, the worm gear screw jack 31 drives the cutting wheel 42 to move upward back to the initial position, the rotary motor 41 stops, and the stepper motor 53 drives the brake shoe 9 back to the initial position, thus completing the grooving operation.

[0033] Embodiment 2 of the automatic grooving fixture for train brake shoes provided by this utility model: Its main difference from Example 1 is: In Example 1, the first driving device is a worm gear screw jack.

[0034] In this embodiment, the first driving device is a pneumatic cylinder or an electric cylinder.

[0035] Based on the above description in this specification, those skilled in the art will also understand that the following terms used, such as "upper," "lower," "front," "rear," "left," "right," "width," "horizontal," "top," "bottom," "inner," and "outer," are terms indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings of this specification. They are only for the purpose of facilitating the explanation of the present invention and simplifying the description, and do not explicitly or implicitly suggest that the device or element involved must have the specific orientation, or be constructed and operated in a specific orientation. Therefore, the above-mentioned orientation or positional relationship terms should not be understood or interpreted as limitations on the present invention.

[0036] In addition, in the description of this specification, "multiple" means at least two, such as two, three or more, etc., unless otherwise expressly and specifically defined.

Claims

1. An automatic grooving fixture for train brake shoes, comprising a worktable, a lifting device, and a cutting assembly, wherein the lifting device is used to drive the cutting assembly to move up and down on the worktable, characterized in that... It also includes a controller, a horizontal displacement assembly, and a clamping assembly. The horizontal displacement assembly includes a third drive device, a mounting plate, and a slide rail. The mounting plate is slidably mounted on the worktable via the slide rail. The third drive device is used to drive the mounting plate to move back and forth. The clamping assembly is located on the mounting plate and includes a support base, a positioning baffle, and a clamping cylinder. The support base is used to support the brake shoes, and the clamping cylinder is used to cooperate with the positioning baffle to clamp the brake shoes. The controller is electrically connected to the cutting assembly, lifting device, horizontal displacement assembly, and clamping assembly.

2. The automatic grooving fixture for train brake shoes according to claim 1, characterized in that, The lifting device includes a lifting guide rail, a lifting platform, and a first driving device. The lifting platform is slidably mounted on the worktable via the lifting guide rail, and the first driving device is used to drive the lifting platform to move up and down.

3. The automatic grooving fixture for train brake shoes according to claim 2, characterized in that, The cutting assembly includes a second drive device and a cutting wheel, which is mounted on a lifting platform and driven to rotate by the second drive device.

4. The automatic grooving fixture for train brake shoes according to claim 3, characterized in that, The workbench includes an upper support, an upper platform, a lower support, and a lower platform. The lower platform is fixed to the top of the lower support, the upper support is fixed to the lower platform, and the upper platform is fixed to the top of the upper support.

5. The automatic grooving fixture for train brake shoes according to claim 4, characterized in that, The number of lifting guide rails is multiple, and each lifting guide rail is arranged in parallel in the vertical direction between the upper platform and the lower platform. The mounting plate is slidably installed on each lifting guide rail.

6. The automatic grooving fixture for train brake shoes according to claim 5, characterized in that, The first driving device is a worm gear screw jack, which is installed on the upper platform in the vertical direction, and the lower end of the screw is fixedly connected to the lifting platform.

7. The automatic grooving fixture for train brake shoes according to claim 6, characterized in that, The second driving device is a rotary motor, which is fixed on the lifting platform. The cutting wheel is rotatably installed below the lifting platform, and the output end of the rotary motor is connected to the wheel axle of the cutting wheel through belt drive.

8. The automatic grooving fixture for train brake shoes according to claim 4, characterized in that, The third driving device is a stepper motor, which is mounted on the lower platform. The slide rail is mounted on the lower platform in the front-to-back direction. The horizontal displacement component also includes a nut and a lead screw extending in the front and back. The lead screw is connected to the output end of the stepper motor through belt drive. The nut is fixed on the lower side of the mounting plate and sleeved on the lead screw to drive the mounting plate to move back and forth.

9. The automatic grooving fixture for train brake shoes according to claim 1, characterized in that, The clamping assembly also includes multiple cylinder seats, the cylinder seats and the positioning baffle are respectively fixed to the front end and the rear end of the mounting plate, the support seat is located between the positioning baffle and the cylinder seats, the positioning baffle is used to stop the brake shoes, and the clamping cylinder is installed on the cylinder seat.

10. The automatic grooving fixture for train brake shoes according to claim 1, characterized in that, The controller has a touch screen.

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