A positioning clamp for processing a brake hanger of a bullet train

Abstract

The utility model relates to the technical field of fixture, and disclose a kind of motorcar brake hanger seat processing positioning fixture, including base, and the base top is provided with positioning clamping mechanism.Positioning clamping mechanism is moved by hydraulic cylinder pusher slider and moving seat, so that first clamping block and second clamping block are mutually close, realize the accurate positioning and stable clamping of motorcar brake hanger seat.First pivot and first clamping block and second pivot and second clamping block are in same level, ensure the balance and accuracy of clamping, effectively avoid the error produced in the process of clamping unstable, guarantee the processing quality, with the first servo motor drive worm rotation, worm and worm wheel meshing transmission, drive second pivot and second clamping block rotation, the angle of second clamping block can be flexibly adjusted, to adapt to different shape and size motorcar brake hanger seat clamping demand, greatly enhance the versatility and adaptability of fixture, reduce the time and cost of replacing fixture due to mismatching.

Description

Technical Field

[0001] This utility model relates to the field of fixture technology, specifically to a positioning fixture for machining a train brake hanger. Background Technology

[0002] As a key component of the high-speed train braking system, the quality of the brake hanger directly affects the braking performance of the train. During the manufacturing process of the high-speed train brake hanger, positioning equipment is required to position and fix the brake hanger.

[0003] According to announcement number CN 214722433 U, a positioning fixture for machining a train brake hanger includes a base plate, a first centering clamp mounted on the base plate, the jaws of the first clamp moving relative to each other in the left-right direction, three horizontal support columns arranged in a triangular pattern mounted on the top surface of the first centering clamp, a pressure plate bolted to the first centering clamp mounted above the first centering clamp, and second centering clamps mounted on the base plate on the left and right sides of the first centering clamp, the jaws of the second centering clamps moving relative to each other in the front-back direction.

[0004] This device can complete all the required processing operations in a single clamping operation, improving the processing efficiency of the EMU brake hanger and increasing the stability of the EMU brake hanger positioning structure, reducing processing errors and improving processing accuracy. However, in terms of ease of operation, the device lacks positioning adjustment functions, requiring frequent manual handling and adjustment of the workpiece, which not only increases labor intensity but also reduces production efficiency. Utility Model Content

[0005] The purpose of this utility model is to provide a positioning fixture for machining a train brake hanger, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a positioning fixture for processing a train brake hanger, comprising a base, a positioning clamping mechanism on the top of the base, and a lifting mechanism on the top of the base;

[0007] The positioning and clamping mechanism includes a first fixed base, which is fixedly connected to the top of the base near the right side. A first rotating shaft is rotatably connected to the left side of the first fixed base near the top. A first clamping block is fixedly connected to the left end of the first rotating shaft. A first fixed frame is fixedly connected to the top left side of the base. First guide rods are symmetrically fixedly connected to the left and right sides of the inner wall of the first fixed frame. Slider blocks are slidably connected to the surfaces of the two first guide rods. A hydraulic cylinder is fixedly connected to the left side of the first fixed frame. A movable base is fixedly connected to the top of the slider. A second rotating shaft is arranged on the left side of the movable base near the top. A second clamping block is fixedly connected to the right end of the second rotating shaft. A fixed plate is fixedly connected to the back of the left side of the movable base near the top. A first servo motor is fixedly connected to the back of the fixed plate. A worm gear is fixedly connected to the output end of the first servo motor. A worm wheel is fixedly connected to the surface of the second rotating shaft near the left end. A baffle plate is fixedly connected to the left side of the first fixed frame near the bottom. Support columns are symmetrically fixedly connected to the bottom left side of the baffle plate.

[0008] Preferably, the movable seat has a hole on the left side near the top that matches the second rotating shaft, and the surface of the second rotating shaft passes through and is rotatably connected to the hole, and the worm gear meshes with the worm wheel.

[0009] Preferably, the output end of the hydraulic cylinder is fixedly connected to the left side of the slider, and the first rotating shaft and the first clamping block are at the same level as the second rotating shaft and the second clamping block.

[0010] Preferably, the right side of the movable seat has a groove near the bottom that matches the baffle plate, and the surface of the baffle plate is slidably connected to the groove. The bottom of the support column is fixedly connected to the left side of the bottom of the base. The processing debris will fall on the baffle plate and will not fall into the first fixed frame, thus not affecting the sliding of the slider on the surface of the first guide rod.

[0011] Preferably, the lifting mechanism includes a second fixed base, which is fixedly connected to the bottom of the base. A second fixed frame is fixedly connected to the bottom of the second fixed base. A lifting frame is provided on the top of the second fixed frame. Guide blocks are symmetrically fixedly connected to the left and right sides of the lifting frame near the bottom. Second guide rods are symmetrically fixedly connected to the left and right sides of the top of the second fixed base. A lifting seat is fixedly connected to the top of the lifting frame. A third fixed frame is fixedly connected to the left and right sides of the second fixed frame near the top. A third rotating shaft is rotatably connected to the left and right sides of the inner wall of the third fixed frame. A second servo motor is fixedly connected to the right side of the third fixed frame. A gear is fixedly connected to the middle of the surface of the third rotating shaft. Racks are fixedly connected to the upper and lower sides of the inner wall of the lifting frame.

[0012] Preferably, the top end of the second guide rod is fixedly connected to the top of the inner wall of the second fixed frame. The top of the guide block has a hole that matches the second guide rod, and the guide block is slidably connected to the surface of the second guide rod through the hole. The second guide rod and the guide block support the lifting frame, so that the lifting frame can be stably lifted up and down. The EMU brake hanger is placed on top of the lifting frame, which facilitates the lifting of the EMU brake hanger and eliminates the need for staff to carry the EMU brake hanger upwards.

[0013] Preferably, the top of the second fixed frame and the top of the shield are provided with slots, and the lifting frame and the rack move up and down in the slots. The output end of the second servo motor is fixedly connected to the right end of the third rotating shaft, and the gear meshes with the rack.

[0014] Compared with the prior art, this utility model provides a positioning fixture for machining a high-speed train brake hanger, which has the following advantages:

[0015] 1. This positioning fixture for the EMU brake hanger uses a hydraulic cylinder to move a slider and a movable seat, bringing the first and second clamping blocks closer together to achieve precise positioning and stable clamping of the EMU brake hanger. The first rotating shaft and the first clamping block are at the same level as the second rotating shaft and the second clamping block, ensuring balance and accuracy in clamping. This effectively avoids errors caused by unstable clamping during processing, guaranteeing processing quality. A first servo motor drives a worm gear to rotate, which meshes with a worm wheel, driving the second rotating shaft and the second clamping block to rotate. This allows for flexible adjustment of the angle of the second clamping block to adapt to the clamping requirements of EMU brake hangers of different shapes and sizes, greatly enhancing the fixture's versatility and adaptability, and reducing the time and cost of changing fixtures due to mismatch.

[0016] 2. The positioning fixture for the train brake jack is machined. The lifting mechanism is driven by a second servo motor to rotate a third shaft and gears. The gears mesh with a rack and pinion to drive the lifting frame and lifting seat up and down. The second guide rod and guide block support and guide the lifting frame, ensuring a smooth and reliable lifting process. Placing the train brake jack on top of the lifting seat allows for easy lifting and lowering of the jack without the need for manual lifting by workers, reducing labor intensity, improving work efficiency, and avoiding potential damage to the jack during handling. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in 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.

[0018] Figure 1 This is a three-dimensional structural schematic diagram of the present utility model;

[0019] Figure 2 This is a three-dimensional schematic diagram of the structural positioning and clamping mechanism of this utility model;

[0020] Figure 3 This is a three-dimensional schematic diagram of the second rotating shaft and the second clamping block of the present invention.

[0021] Figure 4 This is a three-dimensional schematic diagram of the worm gear and worm wheel structure of this utility model;

[0022] Figure 5 This is a three-dimensional schematic diagram of the lifting mechanism of this utility model;

[0023] Figure 6 This is a three-dimensional schematic diagram of the third rotating shaft and gear of this utility model.

[0024] In the diagram: 1. Base; 2. Positioning and clamping mechanism; 21. First fixed seat; 22. First rotating shaft; 23. First clamping block; 24. First fixed frame; 25. First guide rod; 26. Slider; 27. Hydraulic cylinder; 28. Moving seat; 29. ​​Second rotating shaft; 211. Second clamping block; 212. Fixed plate; 213. First servo motor; 214. Worm gear; 215. Worm wheel; 216. Baffle plate; 217. Support column; 3. Lifting mechanism; 31. Second fixed seat; 32. Second fixed frame; 33. Lifting frame; 34. Guide block; 35. Second guide rod; 36. Lifting seat; 37. Third fixed frame; 38. Third rotating shaft; 39. Second servo motor; 311. Gear; 312. Rack. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0027] This utility model provides the following technical solution:

[0028] Example 1

[0029] Please see Figure 1-4 This utility model provides a technical solution: a positioning fixture for processing a train brake hanger, including a base 1, a positioning clamping mechanism 2 provided on the top of the base 1, and a lifting mechanism 3 provided on the top of the base 1;

[0030] The positioning and clamping mechanism 2 includes a first fixed base 21, which is fixedly connected to the top of the base 1 near the right side. A first rotating shaft 22 is rotatably connected to the left side of the first fixed base 21 near the top. A first clamping block 23 is fixedly connected to the left end of the first rotating shaft 22. A first fixed frame 24 is fixedly connected to the top left side of the base 1. First guide rods 25 are symmetrically fixedly connected to the left and right sides of the inner wall of the first fixed frame 24. Sliding blocks 26 are slidably connected to the surfaces of the two first guide rods 25. A hydraulic cylinder 27 is fixedly connected to the left side of the first fixed frame 24. A movable seat is fixedly connected to the top of the sliding block 26. 28. A second rotating shaft 29 is provided on the left side near the top of the movable seat 28. A second clamping block 211 is fixedly connected to the right end of the second rotating shaft 29. A fixing plate 212 is fixedly connected to the back of the left side near the top of the movable seat 28. A first servo motor 213 is fixedly connected to the back of the fixing plate 212. A worm gear 214 is fixedly connected to the output end of the first servo motor 213. A worm wheel 215 is fixedly connected to the surface of the second rotating shaft 29 near the left end. A baffle plate 216 is fixedly connected to the left side near the bottom of the first fixed seat 28. Support columns 217 are symmetrically fixedly connected to the bottom left side of the baffle plate 216.

[0031] The movable seat 28 has a hole on its left side near the top that matches the second rotating shaft 29, and the surface of the second rotating shaft 29 passes through and is rotatably connected to the hole, with the worm 214 meshing with the worm wheel 215.

[0032] The output end of the hydraulic cylinder 27 is fixedly connected to the left side of the slider 26, and the first rotating shaft 22 and the first clamping block 23 are at the same level as the second rotating shaft 29 and the second clamping block 211.

[0033] The right side of the movable seat 28 near the bottom has a groove that matches the baffle plate 216, and the surface of the baffle plate 216 is slidably connected to the groove. The bottom of the support column 217 is fixedly connected to the bottom left side of the base 1. The processing debris will fall on the baffle plate 216 and will not fall into the first fixed frame 24, so as not to affect the sliding of the slider 26 on the surface of the first guide rod 25.

[0034] Example 2

[0035] Please see Figure 5-6 Furthermore, based on Embodiment 1, a lifting mechanism 3 is obtained.

[0036] The lifting mechanism 3 includes a second fixed base 31, which is fixedly connected to the bottom of the base 1. A second fixed frame 32 is fixedly connected to the bottom of the second fixed base 31. A lifting frame 33 is provided on the top of the second fixed frame 32. Guide blocks 34 are fixedly connected symmetrically on the left and right sides of the lifting frame 33 near the bottom. Second guide rods 35 are fixedly connected symmetrically on the left and right sides of the top of the second fixed base 31. A lifting seat 36 is fixedly connected to the top of the lifting frame 33. A third fixed frame 37 is fixedly connected on the left and right sides of the second fixed frame 32 near the top. A third rotating shaft 38 is rotatably connected to the left and right sides of the inner wall of the third fixed frame 37. A second servo motor 39 is fixedly connected to the right side of the third fixed frame 37. A gear 311 is fixedly connected to the middle of the surface of the third rotating shaft 38. A rack 312 is fixedly connected to the upper and lower sides of the inner wall of the lifting frame 33.

[0037] The top end of the second guide rod 35 is fixedly connected to the top of the inner wall of the second fixed frame 32. The top of the guide block 34 has a hole that matches the second guide rod 35, and the guide block 34 is slidably connected to the surface of the second guide rod 35 through the hole. The second guide rod 35 and the guide block 34 support the lifting frame 33, so that the lifting frame 33 can be lifted and lowered stably. The EMU brake hanger is placed on the top of the lifting seat 36, which facilitates the lifting and lowering of the EMU brake hanger and eliminates the need for staff to carry the EMU brake hanger upward.

[0038] The top of the second fixed frame 32 and the top of the baffle plate 216 are provided with slots, and the lifting frame 33 and the rack 312 move up and down in the slots. The output end of the second servo motor 39 is fixedly connected to the right end of the third rotating shaft 38, and the gear 311 meshes with the rack 312.

[0039] In actual operation, when this device is in use, the lifting mechanism 3 is in its initial state, and the lifting seat 36 is in a lower position, making it convenient to place the EMU brake jack on the lifting seat 36. At this time, the lifting frame 33 is located in a lower position within the second fixed frame 32, and the guide block 34 is also in a correspondingly lower position on the second guide rod 35. The gear 311 and rack 312 are in an initial meshing state. When it is necessary to lift the EMU brake jack to a suitable height for processing, the second servo motor 39 is started. The output end of the second servo motor 39 drives the third rotating shaft 38 to rotate, and the gear 311 on the third rotating shaft 38 rotates accordingly. Since the gear 311 meshes with the rack 312, the rotation of the gear 311 will drive the rack 312 to move upward. The rack 312 is fixed on the upper and lower sides of the inner wall of the lifting frame 33, and the lifting frame 33 is fixedly connected to the lifting seat 36, so the upward movement of the rack 312 will drive the lifting frame 33 and the lifting seat 36 to move upward together. The guide block 34 slides upward on the second guide rod 35, providing guidance and support for the rise of the lifting frame 33, ensuring a smooth and reliable lifting process. When the lifting seat 36 lifts the EMU brake hanger to the required height, the second servo motor 39 stops working. At this time, the EMU brake hanger is in a suitable processing position. After processing is completed, the second servo motor 39 is started to rotate in the reverse direction, driving the third rotating shaft 38 and gear 311 to rotate in the reverse direction. The gear 311 meshes with the rack 312, causing the rack 312, lifting frame 33 and lifting seat 36 to move downward together. The guide block 34 slides downward on the second guide rod 35 until the lifting seat 36 returns to the initial lower position, making it convenient to remove the processed EMU brake hanger.

[0040] When the positioning and clamping mechanism 2 is in its initial position, the hydraulic cylinder 27 is in a retracted state, causing the slider 26 to be positioned on the first guide rod 25 closer to the hydraulic cylinder 27. At this time, the movable seat 28 is also in the corresponding position, and the first clamping block 23 and the second clamping block 211 are relatively far apart, leaving space for the placement of the EMU brake hanger. When it is necessary to clamp and fix the EMU brake hanger, the hydraulic cylinder 27 is activated, and the output end of the hydraulic cylinder 27 extends, pushing the slider 26 to slide to the right on the first guide rod 25. Since the slider 26 is fixedly connected to the movable seat 28, the movable seat 28 moves to the right accordingly, causing the second clamping block 211 to gradually approach the first clamping block 23. When the second clamping block 211 and the first clamping block 23 clamp the EMU brake hanger, the hydraulic cylinder 27 stops working, realizing the clamping and positioning of the EMU brake hanger. If the EMU brake hanger needs to be processed at a specific angle, the first servo motor 213 can be activated. The output of the first servo motor 213 drives the worm gear 214 to rotate. Since the worm gear 214 meshes with the worm wheel 215, the worm wheel 215 will rotate accordingly. The worm wheel 215 is fixed on the second rotating shaft 29, which is fixedly connected to the second clamping block 211. Therefore, the rotation of the worm wheel 215 will drive the second rotating shaft 29 and the second clamping block 211 to rotate together, thereby adjusting the angle of the second clamping block 211 and thus adjusting the angle at which the train brake hanger is clamped to meet different processing requirements. During the processing, the generated debris will fall onto the baffle plate 216. The baffle plate 216 is fixed to the base 1 by the support column 217, and the right side of the movable seat 28 near the bottom has a groove that matches the baffle plate 216. The baffle plate 216 passes through and slides left and right in the groove. This design prevents debris from falling into the first fixed frame 24, avoiding debris from affecting the sliding of the slider 26 on the surface of the first guide rod 25, and ensuring the normal operation of the positioning and clamping mechanism 2.

[0041] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. A positioning fixture for machining a train brake hanger, comprising a base (1), characterized in that: The base (1) is provided with a positioning clamping mechanism (2) at the top and a lifting mechanism (3) at the top. The positioning and clamping mechanism (2) includes a first fixed seat (21), which is fixedly connected to the top of the base (1) near the right side. A first rotating shaft (22) is rotatably connected to the left side of the first fixed seat (21) near the top. A first clamping block (23) is fixedly connected to the left end of the first rotating shaft (22). A first fixed frame (24) is fixedly connected to the top left side of the base (1). First guide rods (25) are symmetrically fixedly connected to the left and right sides of the inner wall of the first fixed frame (24). Slider blocks (26) are slidably connected to the surfaces of the two first guide rods (25). A hydraulic cylinder (27) is fixedly connected to the left side of the first fixed frame (24). A hydraulic cylinder (27) is fixedly connected to the top of the slider (26). A movable seat (28) is provided with a second rotating shaft (29) on the left side near the top. A second clamping block (211) is fixedly connected to the right end of the second rotating shaft (29). A fixed plate (212) is fixedly connected to the back of the left side of the movable seat (28) near the top. A first servo motor (213) is fixedly connected to the back of the fixed plate (212). A worm gear (214) is fixedly connected to the output end of the first servo motor (213). A worm wheel (215) is fixedly connected to the surface of the second rotating shaft (29) near the left end. A baffle plate (216) is fixedly connected to the left side of the first fixed seat near the bottom. Support columns (217) are symmetrically fixedly connected to the bottom left side of the baffle plate (216).

2. The positioning fixture for machining a train brake hanger according to claim 1, characterized in that: The movable seat (28) has a hole on its left side near the top that matches the second rotating shaft (29), and the surface of the second rotating shaft (29) passes through and is rotatably connected to the hole. The worm (214) meshes with the worm wheel (215).

3. The positioning fixture for machining a train brake hanger according to claim 1, characterized in that: The output end of the hydraulic cylinder (27) is fixedly connected to the left side of the slider (26), and the first rotating shaft (22) and the first clamping block (23) are at the same level as the second rotating shaft (29) and the second clamping block (211).

4. The positioning fixture for machining a train brake hanger according to claim 1, characterized in that: The movable seat (28) has a groove on the right side near the bottom that matches the baffle plate (216), and the surface of the baffle plate (216) is slidably connected to the groove. The bottom of the support column (217) is fixedly connected to the bottom left side of the base (1).

5. A positioning fixture for machining a train brake hanger according to claim 1, characterized in that: The lifting mechanism (3) includes a second fixed seat (31), which is fixedly connected to the bottom of the base (1). A second fixed frame (32) is fixedly connected to the bottom of the second fixed seat (31). A lifting frame (33) is provided on the top of the second fixed frame (32). Guide blocks (34) are fixedly connected symmetrically to the left and right sides of the lifting frame (33) near the bottom. Second guide rods (35) are fixedly connected symmetrically to the left and right sides of the top of the second fixed seat (31). A lifting seat (36) is fixedly connected to the top of the lifting frame (33). A third fixed frame (37) is fixedly connected to the left and right sides of the second fixed frame (32) near the top. A third rotating shaft (38) is rotatably connected to the left and right sides of the inner wall of the third fixed frame (37). A second servo motor (39) is fixedly connected to the right side of the third fixed frame (37). A gear (311) is fixedly connected to the middle of the surface of the third rotating shaft (38). A rack (312) is fixedly connected to the upper and lower sides of the inner wall of the lifting frame (33).

6. A positioning fixture for machining a train brake hanger according to claim 5, characterized in that: The top end of the second guide rod (35) is fixedly connected to the top of the inner wall of the second fixed frame (32). The top of the guide block (34) is provided with a hole that matches the second guide rod (35), and the guide block (34) slides up and down to the surface of the second guide rod (35) through the hole. The second guide rod (35) and the guide block (34) support the lifting frame (33), so that the lifting frame (33) can move up and down stably.

7. A positioning fixture for machining a train brake hanger according to claim 5, characterized in that: The top of the second fixed frame (32) and the top of the baffle plate (216) are provided with slots, and the lifting frame (33) and the rack (312) move up and down in the slots. The output end of the second servo motor (39) is fixedly connected to the right end of the third rotating shaft (38), and the gear (311) meshes with the rack (312).

Images