Coupler yoke bending device

Abstract

The utility model discloses a coupler yoke bending device which comprises a U-shaped frame, the top of the U-shaped frame is provided with a bending device, the inner side of the U-shaped frame is provided with a T-shaped fixing seat and a first electric push rod, the output end of the first electric push rod is connected with a U-shaped mounting frame, the bottom of the inner side of the U-shaped frame is provided with two sets of sliding grooves, and the two sets of sliding grooves are connected with the U-shaped mounting frame. The U-shaped mounting frame is in sliding fit with the inner side of the sliding groove, a bending seat is mounted at the top of the U-shaped mounting frame, and a U-shaped groove is formed in the inner side of the bending seat; the U-shaped installation frame is matched with the correcting and limiting mechanism arranged on the side face of the bending base, four sets of limiting clamping plates in the correcting and limiting mechanism can be adjusted to ascend and descend conveniently in the forge piece bending period of the coupler yoke, the limiting clamping plates are made to be higher than the positioning table top of the bending base, and therefore the forge piece in the bent state is clamped and limited; and the bending precision of the forge piece is prevented from being influenced by position deviation during bending.

Description

Technical Field

[0001] This utility model relates to the field of hook tail frame bending technology, specifically a hook tail frame bending device. Background Technology

[0002] Heavy-haul rail transit refers to railways with a large total train weight, large axle load freight cars, or extremely high traffic density and transport volume. It is mainly used to transport large raw material goods. Among them, the coupler buffer device is a device in railway vehicles that connects vehicles (or locomotives), provides traction, and mitigates the impact force during train operation. It consists of components such as the coupler tail frame, buffer, trailing plate, coupler tail pin, and coupler body.

[0003] Authorization announcement number CN215355546U discloses a hook tail frame bending device. This device mainly enables the rapid and efficient bending of hook tail frame strip forgings into a U-shape under red-hot conditions. During the bending process, the rollers on both sides can not only play a positioning role but also make the bending process smooth and natural, without affecting the surface quality of the workpiece. However, in actual use, the device still has the following defects:

[0004] The aforementioned patent mainly uses roller positioning to bend the hook tail frame strip forging into a U-shape in a red-hot state. However, when bending the hook tail frame, the pressure head is in contact with the forging and the forging is prone to positional displacement of the forging under pressure, which in turn leads to uneven bending defects in the forging, reducing the accuracy and stability of the hook tail frame bending. Furthermore, after the hook tail frame is bent, it is difficult to remove it from the bent groove, increasing the limitations of the bending device and reducing production efficiency. Utility Model Content

[0005] The purpose of this invention is to provide a hook-tail frame bending device to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a hook tail frame bending device, comprising a U-shaped frame, a bending device on the top of the U-shaped frame, a T-shaped fixing seat and a first electric push rod on the inner side of the U-shaped frame, the output end of the first electric push rod being connected to a U-shaped mounting bracket, two sets of sliding grooves being opened at the bottom of the inner side of the U-shaped frame, the U-shaped mounting bracket slidingly engaging within the sliding grooves, a bending seat being installed on the top of the U-shaped mounting bracket, a U-shaped groove being opened on the inner side of the bending seat, and limiting wheels being sleeved on both sides of the inner side of the bending seat;

[0007] The bottom of the U-shaped mounting bracket is equipped with a correction and limiting mechanism.

[0008] Preferably, the correction limiting mechanism includes a second electric push rod, which is disposed at the bottom of the U-shaped mounting bracket. The output end of the second electric push rod is provided with a lifting plate. Two sets of limiting clamps are slidably disposed on both sides of the top of the lifting plate. Limiting grooves are provided on both sides of the bending seat, and mounting grooves are slidably connected to the inner side of the limiting grooves. Bidirectional lead screws are sleeved on the inner side of the two mounting grooves, and the two limiting clamps on the same side are symmetrically sleeved on the outer side of the bidirectional lead screws.

[0009] Preferably, the bending device includes a hydraulic cylinder and a pressure head, and the pressure head is opposite to the inner vertical surface of the U-shaped groove, which facilitates contact bending of the hook tail frame forging through the structural fit of the bending device.

[0010] Preferably, the bottom of the T-shaped fixing seat is opposite to the horizontal plane of the U-shaped groove, and the bending seat and the U-shaped groove are horizontally displaced at the protrusion at the bottom of the T-shaped fixing seat, which improves the stability of the horizontal adjustment of the structure and facilitates the ejection of the bent forging through the T-shaped fixing seat.

[0011] Preferably, there are four sets of limiting wheels, with each pair of limiting wheels fitted on both sides of the inner side of the bending seat. The symmetrical arrangement of the limiting wheels improves the bending quality of the forging.

[0012] Preferably, the top of the U-shaped mounting bracket has openings on both sides, and the diameter of the openings is larger than the diameter of the limiting clamp, so that the limiting clamp can be adjusted and moved through the openings.

[0013] Preferably, guide grooves are provided on both sides of the top of the lifting plate, and four sets of slidingly engaged guide blocks are provided on the inner side of the guide grooves. The guide blocks are connected to the limiting clamps, which facilitates the improvement of the stability of the horizontal adjustment of the limiting clamps.

[0014] Preferably, the top and bottom of the two mounting slots are provided with through slots, and the through slots are matched with the limiting clamps. The two mounting slots slide up and down inside the limiting slots. By adjusting the lifting and spacing of the limiting clamps, it is easy to adapt to the positioning of forgings of different widths.

[0015] The hook-tail frame bending device proposed in this utility model has at least the following beneficial effects:

[0016] 1. The U-shaped mounting bracket and the straightening and limiting mechanism set on the side of the bending seat work together to facilitate the adjustment of the four sets of limiting plates in the straightening and limiting mechanism during the bending of the forging in the hook tail frame. This allows the limiting plates to be higher than the positioning table of the bending seat, thereby clamping and limiting the bending of the forging and preventing positional deviation during bending, which would affect the bending accuracy of the forging. At the same time, the spacing between the two sets of limiting plates on the same side can be adjusted to accommodate forging blanks of different widths, increasing the functionality of the structure and the flexibility of actual use.

[0017] 2. By utilizing the structural design of the T-shaped fixing seat, the convex structure of the T-shaped fixing seat matches the U-shaped groove structure, thereby allowing the U-shaped groove to move horizontally on the outside of the T-shaped fixing seat. This further improves the stability of the horizontal displacement adjustment of the U-shaped mounting frame and the bending seat, enabling the bending seat with displacement adjustment to automatically and quickly receive and bend the conveyed forgings. Simultaneously with the horizontal displacement of the bending seat, the bent forgings are brought into contact with the protrusion of the T-shaped fixing seat, so that under the squeezing action of the T-shaped fixing seat, the bent forgings are automatically pushed out, facilitating automatic and rapid unloading of forgings and improving the working efficiency of the hook tail frame bending. Attached Figure Description

[0018] Figure 1 This is a perspective view of the present utility model;

[0019] Figure 2 This is a front sectional view of the present invention;

[0020] Figure 3 For the present utility model Figure 2 Enlarged schematic diagram of the structure at point A;

[0021] Figure 4 This is a side sectional view of the mounting groove of this utility model.

[0022] In the diagram: 1. U-shaped frame; 2. Bending device; 3. T-shaped fixed seat; 4. First electric push rod; 5. Slide groove; 6. U-shaped mounting frame; 7. Correction and limiting mechanism; 701. Second electric push rod; 702. Lifting plate; 703. Limiting clamp; 704. Mounting groove; 705. Limiting groove; 706. Two-way lead screw; 8. Bending seat; 9. U-shaped groove; 10. Limiting wheel. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. 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.

[0024] Please see Figure 1-4The present invention provides an embodiment of a hook tail frame bending device, comprising a U-shaped frame 1, a bending device 2 on the top of the U-shaped frame 1, a T-shaped fixing seat 3 and a first electric push rod 4 on the inner side of the U-shaped frame 1, the first electric push rod 4 being of model DTZ-500, the output end of the first electric push rod 4 being connected to a U-shaped mounting bracket 6, two sets of sliding grooves 5 being opened at the bottom of the inner side of the U-shaped frame 1, the U-shaped mounting bracket 6 slidingly engaging within the sliding grooves 5, a bending seat 8 being installed on the top of the U-shaped mounting bracket 6, a U-shaped groove 9 being opened on the inner side of the bending seat 8, and four sets of limiting wheels 10 being fitted on both sides of the inner side of the bending seat 8, wherein every two sets of limiting wheels 10 are fitted on both sides of the inner side of the bending seat 8, thereby improving the bending quality of the forging by utilizing the symmetrical arrangement of the limiting wheels;

[0025] The bottom of the U-shaped mounting bracket 6 is equipped with a correction and limiting mechanism 7;

[0026] The correction limiting mechanism 7 includes a second electric push rod 701, which can be a DTZ-500. The second electric push rod 701 is located at the bottom of the U-shaped mounting bracket 6. The output end of the second electric push rod 701 is provided with a lifting plate 702. Two sets of limiting clamps 703 are slidably provided on both sides of the top of the lifting plate 702. The bending seat 8 is provided with limiting grooves 705 on both sides, and the inner side of the limiting grooves 705 is slidably connected to the mounting grooves 704.

[0027] Two bidirectional lead screws 706 are fitted inside the two mounting slots 704, and two limiting clamps 703 on the same side are symmetrically fitted outside the bidirectional lead screws 706. Guide slots are opened on both sides of the top of the lifting plate 702, and four sets of slidingly fitted guide blocks are provided inside the guide slots. The guide blocks are connected to the limiting clamps 703 to improve the stability of the horizontal adjustment of the limiting clamps 703. Openings are opened on both sides of the top of the U-shaped mounting bracket 6, and the diameter of the openings is larger than the diameter of the limiting clamps 703, so that the limiting clamps 703 can be adjusted and moved through the openings.

[0028] The top and bottom of the two mounting slots 704 are provided with through slots, and the through slots are matched with the limiting clamp 703. The two mounting slots 704 slide up and down inside the limiting slot 705. The lifting and spacing adjustment of the limiting clamp 703 can be used to facilitate the positioning of forgings of different widths.

[0029] Example 1, as Figure 1-2 As shown, the bending device 2 includes a hydraulic cylinder and a pressure head. The pressure head is opposite to the inner vertical surface of the U-shaped groove 9. By driving the pressure head and the hydraulic cylinder, when the bending seat 8 and the U-shaped groove 9 are moved to the vertical surface of the pressure head, the pressure head can be pressed down to bend the red-hot forging, so as to automatically bend and shape the forging.

[0030] Example 2, as Figure 1-2As shown, the bottom of the T-shaped fixing seat 3 is opposite to the horizontal plane of the U-shaped groove 9. The bending seat 8 and the U-shaped groove 9 are horizontally displaced at the protrusions at the bottom of the T-shaped fixing seat 3. Through the structural arrangement of the T-shaped fixing seat 3, the forgings in the bending seat 8 and the U-shaped groove 9 are bent and formed. By horizontally displacing the U-shaped mounting bracket 6, the forgings are moved synchronously and contacted with the end face of the T-shaped fixing seat 3, thereby automatically pushing out the bent forgings. This allows for quick picking up and recycling of the forgings, facilitating continuous processing and improving processing efficiency.

[0031] Working principle: In this hook tail frame bending device;

[0032] When the device performs the bending operation of the hook tail frame, the first electric push rod 4 is activated to drive the U-shaped mounting bracket 6 to slide inside the slide groove 5. This causes the U-shaped mounting bracket 6 to push the bending seat 8 and the U-shaped groove 9 out of the outer side of the T-shaped fixing seat 3, so that the forging can be placed into the surface of the bending seat 8. Then, the distance between the two sets of limiting clamps 703 can be adjusted by rotating the bidirectional lead screw 706, so that the limiting clamps 703 are matched and adjusted according to the width of the forging. The second electric push rod 701 is activated to drive the lifting plate 702 to rise, causing the lifting plate 702 to drive the four sets of limiting clamps 703 after the distance adjustment to rise above the horizontal plane of the bending seat 8. This allows the limiting clamps 703 after the distance adjustment to position the side of the forging, preventing the forging from shifting position during bending. Finally, the bending device 2 is activated, and the pressure head contacts the forging. With the U-shaped structure of the U-shaped groove 9 and the guidance of the limiting wheel 10, the forging is bent stably, improving the stability and accuracy of the bending.

[0033] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0034] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly, for example, they can refer to a fixed connection or a detachable connection; a mechanical connection or an electrical connection; a direct connection or an indirect connection through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

Claims

1. A hook-tail frame bending device, comprising a U-shaped frame (1), characterized in that: The top of the U-shaped frame (1) is provided with a bending device (2). The inner side of the U-shaped frame (1) is provided with a T-shaped fixing seat (3) and a first electric push rod (4). The output end of the first electric push rod (4) is connected to a U-shaped mounting bracket (6). Two sets of sliding grooves (5) are opened at the bottom of the inner side of the U-shaped frame (1). The U-shaped mounting bracket (6) slides in the inner side of the sliding grooves (5). The top of the U-shaped mounting bracket (6) is provided with a bending seat (8). The inner side of the bending seat (8) is provided with a U-shaped groove (9). Limiting wheels (10) are sleeved on both sides of the inner side of the bending seat (8). The bottom of the U-shaped mounting bracket (6) is provided with a correction and limiting mechanism (7).

2. The hook-tail frame bending device according to claim 1, characterized in that: The correction limiting mechanism (7) includes a second electric push rod (701), which is located at the bottom of the U-shaped mounting bracket (6). The output end of the second electric push rod (701) is provided with a lifting plate (702). Two sets of limiting clamps (703) are slidably arranged on both sides of the top of the lifting plate (702). The bending seat (8) is provided with limiting grooves (705) on both sides. The inner side of the limiting grooves (705) is slidably connected with mounting grooves (704). The inner side of the two mounting grooves (704) is fitted with bidirectional screw rods (706). The two limiting clamps (703) on the same side are symmetrically fitted on the outer side of the bidirectional screw rods (706).

3. The hook-tail frame bending device according to claim 1, characterized in that: The bending device (2) includes a hydraulic cylinder and a pressure head, and the pressure head is opposite to the inner vertical surface of the U-shaped groove (9).

4. The hook-tail frame bending device according to claim 1, characterized in that: The bottom of the T-shaped fixing seat (3) is opposite to the horizontal plane of the U-shaped groove (9), and the bending seat (8) and the U-shaped groove (9) are horizontally displaced at the protrusion at the bottom of the T-shaped fixing seat (3).

5. The hook-tail frame bending device according to claim 1, characterized in that: The limiting wheels (10) consist of four sets, with each two sets of the limiting wheels (10) fitted on both sides of the inner side of the bending seat (8).

6. The hook-tail frame bending device according to claim 1, characterized in that: The top of the U-shaped mounting bracket (6) has openings on both sides, and the diameter of the openings is larger than the diameter of the limiting clamp (703).

7. The hook-tail frame bending device according to claim 2, characterized in that: The lifting plate (702) has guide grooves on both sides of its top, and four sets of sliding guide blocks are provided on the inner side of the guide grooves. The guide blocks are connected to the limiting clamp (703).

8. A hook-tail frame bending device according to claim 2, characterized in that: The top and bottom of the two mounting slots (704) are provided with through slots, and the through slots are matched with the limiting clamp (703). The two mounting slots (704) slide up and down inside the limiting slot (705).

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