A door closer for railway operation

Abstract

The utility model provides a door closer for train operation belongs to the train transportation auxiliary tool field, it includes long lever, and the both ends of long lever are provided with holding part and abutting portion respectively, and the middle part of long lever is provided with the hinge part, and the hinge part is hinged with the clamping hook, the middle part of long lever still is provided with the ring, and the ring is connected with the anti -unhooking, and the end of anti -unhooking away from the ring is connected with the anti -unhooking, and the anti -unhooking can hook the train small door's car muscle. The utility model has the advantages of being able to solve the problem of difficult to close the deformation door, and the problem of long time occupation of closing the deformation door, and being able to solve the problem of tool falling and hurting people when using crowbar and other tools operation at present, and guaranteeing the safety of operating personnel.

Description

Technical Field

[0001] This utility model belongs to the field of auxiliary tools for train transportation, and specifically relates to a door closer for train operations. Background Technology

[0002] Currently, during train cargo loading and unloading operations, operators need to frequently open and close the small doors on the train cars due to the need for unloading and cleaning the cars before loading. Moreover, since each ordinary open wagon of a train is equipped with 12 small doors and 2 large doors, and each small door is equipped with two door claw latches, the large number of small doors, the frequent operation, and the complex working conditions result in frequent malfunctions of the small doors.

[0003] For example, factors such as heavy pressure during cargo loading, collisions with operating machinery, and inadequate maintenance of the small door itself can all cause deformation of the small door. Moreover, once the small door is deformed, the door claws, latches, and door edges will also be affected, making it difficult for the small door to close properly, thereby prolonging the time for loading and unloading goods on the train, and may even create safety hazards for subsequent transportation due to inadequate sealing of the carriage.

[0004] Currently, traditional door closing methods rely on tools such as crowbars for assistance. For example, Chinese patents CN217205937U and CN215889728U disclose a train car door closer. In both methods, the hook is first engaged at the bend on one side of the train car door, and then a screw or lever structure is used to push the deformed hinge back, allowing the latch to engage smoothly and close the small door. However, because existing door closers lack a fixing structure, there is a risk of accidental slippage and injury during closing operations. This is especially true when the hook needs to be engaged at the bottom of the train car's side wall; if the operator slips and releases the door closer, it is extremely easy for it to fall due to its own weight, potentially injuring the operator's legs or feet. Utility Model Content

[0005] The purpose of this invention is to address the problem that existing door closers are prone to detaching during the closing process and causing accidental injury to surrounding personnel. The invention proposes and designs a new door closer for train operations that can be fixed to the train carriage, thereby overcoming the aforementioned problem and ensuring the safety of operators.

[0006] To achieve the above objectives, the technical solution provided by this utility model is as follows: a door closer for train operations, comprising a long rod with a gripping part and an abutment part at each end, a hinge part in the middle of the long rod, and a latching hook hinged to the hinge part; a hanging ring is also provided in the middle of the long rod, the hanging ring is connected to an anti-detachment chain, and an anti-detachment hook is connected to the end of the anti-detachment chain away from the hanging ring, the anti-detachment hook being able to hook onto the train door's reinforcing rib. Thus, when using this utility model, the anti-detachment hook can first be hung in the recess of the train door's reinforcing rib, thereby suspending the entire door closer on the train door; the latching hook is then hooked onto the lower edge of the train body, forming a lever structure; then the long rod is rotated around the pivot, causing the abutment part of the long rod to press against the door claw of the train door until the latch can close smoothly, thus completing the entire door closing operation. Furthermore, regarding the aforementioned operation process, from an operational convenience perspective, it cleverly utilizes the natural gap between the outer reinforcing rib and the outer surface of the existing train door. Simply hang the anti-detachment hook directly onto the recessed area of ​​the train door's reinforcing rib to quickly and securely install the entire door closer onto the train door. This convenient installation method greatly saves the operator's time, eliminating the need for complex assembly procedures and reducing operational difficulty; even operators with relatively little experience can easily master it. From a safety perspective, accidents involving tools like crowbars accidentally falling and injuring people are common when using them, posing a significant threat to the operator's personal safety. This utility model, through the combination of the anti-detachment hook and anti-detachment chain, ensures that even if the operator accidentally slips during a busy operation, the door closer will not fall directly like traditional tools, but will remain firmly suspended on the reinforcing rib, fundamentally eliminating the risk of tools falling and injuring the operator's feet, legs, or other body parts, providing comprehensive safety protection for the operator.

[0007] Furthermore, one end of the anti-detachment hook is fixedly connected to the anti-detachment chain, and the other end of the anti-detachment hook is provided with an open hook groove. The width of the hook groove is slightly larger than the thickness of most of the reinforcing bars on the outside of the train door, and the depth of the hook groove is larger than the width of most of the reinforcing bars on the outside of the train door. It can be directly hung on the reinforcing bars on the outside of the train door through the hook groove, thereby fixing the entire door closer to the train door. That is to say, when using this utility model, when performing the installation operation, the operator can first slowly approach the anti-detachment hook with the reinforcing bar of the train door and align the opening of the hook groove with the reinforcing bar; then gently push the anti-detachment hook, and it can be smoothly fitted onto the reinforcing bar using the hook groove. Moreover, this utility model can also provide anti-slip texture on the groove wall of the hook groove, which can greatly increase the friction after it is in close contact with the reinforcing bar, thereby effectively preventing it from shifting during the closing process, so as to ensure that the entire door closer can always be firmly fixed on the train door during the closing process.

[0008] Furthermore, the end of the hook groove with an opening on the anti-detachment hook is bent downwards, making the hook groove more securely attached to the outer side of the train door and reducing the risk of the anti-detachment hook loosening.

[0009] Furthermore, the distance between the end of the long rod with the grip and the hinge is greater than the distance between the end of the long rod with the abutment and the hinge, thus forming a force-saving lever structure. In this way, when an external force is applied to the grip, according to the lever principle, a smaller force can generate a larger force at the abutment, making operation easier and more efficient. Based on this, this design not only reduces the difficulty of operation for users, but also effectively reduces user fatigue, especially in scenarios involving frequent door opening and closing.

[0010] Furthermore, the hinge and the hanging ring are arranged opposite each other on both sides of the long rod, and when the present invention is in use, the hinge is generally located on the lower side of the long rod, and the hanging ring is located on the upper side of the long rod.

[0011] Furthermore, the hinged part is fixedly installed with two rotating sleeves, and a rotating shaft is rotatably installed in both rotating sleeves. The middle part of the rotating shaft is fixedly connected to the end of the snap hook, and the snap hook is located between the two rotating sleeves. The relative rotation between the snap hook and the long rod can be realized by relying on the rotational connection between the rotating shaft and the rotating sleeve.

[0012] Furthermore, the hook has a horizontal part in the middle, one end of which is bent into a vertical part, and the end of the vertical part is fixedly connected to the pivot; the other end of the horizontal part is bent into a bent part, and the angle between the bent part and the horizontal part is an acute angle, so as to ensure that it can be stably hooked onto the lower edge of the train body through the bent part.

[0013] Furthermore, the end of the abutment is bent downwards, and the contact between the abutment and the latch is achieved through the arc surface at the bend. At this point, compared to a flat contact, the arc surface design makes the contact between the abutment and the latch smoother. It also effectively reduces the risk of damage to the latch due to external forces during the rotation of the long rod, thereby improving the reliability of the entire structure under complex working conditions.

[0014] As can be seen from the above technical solution, this utility model has the following advantages: When using this utility model, the anti-detachment hook can be first hung on the recess of the train door frame, thereby suspending the entire door closer on the train door; the latch hook is hooked on the lower edge of the train body to form a lever structure; then the long rod is rotated around the pivot, so that the abutting part of the long rod presses against the door claw of the train door until the latch can be closed smoothly, thus completing the entire door closing operation. Moreover, based on the above process, this utility model not only solves the problem of the difficulty in closing the deformable vehicle door and the problem of the long time required to close the deformable vehicle door, greatly shortening the time required to close the deformable vehicle door and significantly improving work efficiency, thus solving the problem of closing the deformable vehicle door; it can also utilize the gap between the existing train door's outer reinforcing rib and the outer surface of the train door to directly hang the anti-detachment hook in the recess of the train door's reinforcing rib, thereby fixing the entire door closer to the train door. In this way, even if the operator's hand slips during operation, the anti-detachment hook and anti-detachment chain can work together to ensure that the door closer will not fall directly, thus solving the problem of tools falling and injuring people when using tools such as crowbars, and ensuring the safety of the operator. Attached Figure Description

[0015] To more clearly illustrate the technical solution of this utility model, the drawings used in the description 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.

[0016] Figure 1 This is a structural diagram illustrating a specific embodiment of the present invention. Figure 1 ; Figure 2 This is a structural diagram illustrating a specific embodiment of the present invention. Figure 2 .

[0017] In the diagram: 1. Grip part; 2. Abutment part; 3. Hinge part; 4. Hanging ring; 5. Anti-disengagement hook; 6. Hook groove; 7. Anti-disengagement chain; 8. Long rod; 9. Rotating sleeve; 10. Shaft; 11. Horizontal part; 12. Bending part; 13. Snap hook; 14. Vertical part. Detailed Implementation

[0018] To make the objectives, features, and advantages of this utility model more apparent and understandable, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the specific embodiments. Obviously, the embodiments described below are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this patent, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this patent.

[0019] like Figure 1 , Figure 2 As shown, this utility model provides a door closer for train operations, which includes a long rod 8. Along its length, the long rod 8 is sequentially provided with a gripping part 1, a hanging ring 4, a hinged part 3, and an abutment part 2. The gripping part 1 is the part where the operator holds the long rod 8. To significantly improve the stability and comfort of the operator's grip, a non-slip rubber sleeve is specially fitted on the outer layer to increase friction and effectively reduce the frequency of slippage. Furthermore, this rubber sleeve is made of high-quality special rubber material, possessing excellent wear resistance and aging resistance. Even when exposed to the complex and changing outdoor environment for extended periods, frequently subjected to wind, sun, and rain erosion, it maintains good physical properties, ensuring a stable and reliable anti-slip effect.

[0020] The abutment part 2 is the part of the long rod 8 that contacts the latch of the train door. The abutment part 2 can be bent downwards at its end, and the contact between the abutment part 2 and the latch is achieved through the arc surface formed at the bend. This arc surface makes the contact between the abutment part 2 and the door claw smoother, and also effectively reduces the risk of damage to the door claw due to external forces during the rotation of the long rod 8, thereby improving the reliability of the entire structure under complex working conditions.

[0021] Meanwhile, in this invention, the distance between the end of the long rod 8 with the grip portion 1 and the hinge portion 3 is greater than the distance between the end of the long rod 8 with the abutment portion 2 and the hinge portion 3, thus enabling the entire door closer to form a force-saving lever structure. Therefore, when an external force is applied to the grip portion 1, according to the lever principle, a smaller force can generate a larger force on the abutment portion 2, making operation easier and more efficient. Based on this, this design not only reduces the difficulty of operation for users, but also effectively reduces user fatigue, especially in scenarios involving frequent door opening and closing.

[0022] The hinge 3 and the hanging ring 4 are positioned opposite each other on both sides of the long rod 8. When the invention is in use, the hinge 3 is located on the lower side of the long rod 8, and the hanging ring 4 is located on the upper side of the long rod 8. Simultaneously, the invention also connects an anti-detachment chain 7 to the hanging ring 4, and an anti-detachment hook 5 is connected to the end of the anti-detachment chain 7 away from the hanging ring 4. An open hook groove 6 is provided at one end of the anti-detachment hook 5, and the width of the hook groove 6 is slightly larger than the thickness of the reinforcing ribs on the outer side of most train doors, while the depth of the hook groove 6 is greater than the width of the reinforcing ribs on the outer side of most train doors. Thus, when using the invention, the gap between the existing reinforcing ribs on the outer side of the train door and the outer surface of the train door can be utilized. The anti-detachment hook 5 can be directly hung on the recessed part of the reinforcing ribs of the train door through the hook groove 6, thereby fixing the entire door closer to the train door and ensuring that the door closer will not fall directly, thus avoiding accidents where the door closer injures the operator. Moreover, as a preferred embodiment, the present invention can also bend one end of the hook groove 6 with an opening on the anti-detachment hook 5 downward, so that the hook groove 6 is more firmly attached to the outer side of the train door and the risk of the anti-detachment hook 5 loosening.

[0023] Two rotating sleeves 9 are fixedly installed at the lower end of the hinge part 3. A rotating shaft 10 is rotatably installed inside the two rotating sleeves 9, and a snap hook 13 is provided between the two rotating sleeves 9. A horizontal part 11 is provided in the middle of the snap hook 13. One end of the horizontal part 11 is bent upward to form a vertical part 14, and the end of the vertical part 14 is fixedly connected to the middle of the rotating shaft 10 by welding or other means. The other end of the horizontal part 11 is bent upward to form a bent part 12, and the angle between the bent part 12 and the horizontal part 11 is an acute angle. In this way, the present invention can realize the relative rotation between the snap hook 13 and the long rod 8 through the rotational connection between the rotating shaft 10 and the rotating sleeves 9; on the other hand, the angle between the bent part 12 and the horizontal part 11 can ensure that it can be stably hooked to the lower edge of the train body.

[0024] Based on this, when using this utility model, the anti-detachment hook 5 can be first hung on the recess of the train door frame, so that the entire door closer can be suspended on the train door; the latch hook 13 can be hooked on the lower edge of the train body to form a lever structure; then the long rod 8 can be rotated around the pivot 10 so that the abutting part 2 of the long rod 8 can press against the door claw of the train door until the latch can be closed smoothly, thus completing the entire door closing operation.

[0025] Furthermore, in the aforementioned process, traditional tools and methods address the problem that when dealing with deformable car doors, the door's structure twists due to external impacts, long-term wear, or environmental factors, leading to a significant decrease in the fit between the door and the door frame and a geometrically increased difficulty in closing. This also addresses the issue of operators needing to expend considerable time and effort repeatedly trying various angles and forces to barely close the door. This invention utilizes the coordinated operation mechanism of the long rod 8, the abutment part 2, and the latching hook 13 to precisely apply just the right pressure and force to the door claws of the deformable car door. Specifically, based on the lever principle, this invention efficiently amplifies the small force applied by the operator and transmits it to the abutment part 2, allowing it to exert strong and stable pressure on the door claws, cleverly adjusting the latch position and guiding it to close smoothly. Moreover, the entire process is seamless, significantly reducing the time required to close the deformable car door compared to traditional methods, significantly improving work efficiency, and effectively solving the problem of closing deformable car doors.

[0026] Addressing the problem that traditional tools and methods are prone to door closers detaching during use, causing serious injury to operators below, this invention utilizes the gap between the existing train door's outer reinforcing rib and the outer surface of the train door, along with the cooperation of anti-detachment hooks 5 and anti-detachment chains 7, to form a stable and reliable fixing system. This ensures that the door closer will not fall directly, thus solving the problem of tool detachment and injury when using tools such as crowbars, and guaranteeing the safety of operators.

[0027] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A door closer for train operations, comprising a long rod (8), with a gripping part (1) and an abutment part (2) respectively provided at both ends of the long rod (8), and a hinge part (3) provided in the middle of the long rod (8), wherein a latching hook (13) is hinged to the hinge part (3); characterized in that, A hanging ring (4) is also provided in the middle of the long rod (8). The hanging ring (4) is connected to an anti-derailment chain (7). An anti-derailment hook (5) is connected to the end of the anti-derailment chain (7) away from the hanging ring (4). The anti-derailment hook (5) can hook the train door frame.

2. The train operation door closer according to claim 1, characterized in that, One end of the anti-detachment hook (5) is fixedly connected to the anti-detachment chain (7), and the other end of the anti-detachment hook (5) is provided with an open hook groove (6).

3. The train operation door closer according to claim 2, characterized in that, The hook groove (6) with an opening on the anti-detachment hook (5) is bent downward at one end.

4. The train operation door closer according to claim 1, characterized in that, The distance between the end of the long rod (8) where the grip (1) is provided and the hinge (3) is greater than the distance between the end of the long rod (8) where the abutment (2) is provided and the hinge (3).

5. The train operation door closer according to claim 1, characterized in that, The hinge (3) and the hanging ring (4) are arranged opposite each other on both sides of the long rod (8).

6. The train operation door closer according to claim 1, characterized in that, The hinge (3) is fixedly installed with two rotating sleeves (9). A rotating shaft (10) is rotatably installed in both rotating sleeves (9). The middle part of the rotating shaft (10) is fixedly connected to the end of the snap hook (13), and the snap hook (13) is located between the two rotating sleeves (9).

7. The train operation door closer according to claim 6, characterized in that, The hook (13) has a horizontal part (11) in the middle, and a vertical part (14) is bent at one end of the horizontal part (11). The end of the vertical part (14) is fixedly connected to the rotating shaft (10). The other end of the horizontal part (11) has a bent part (12), and the included angle between the bent part (12) and the horizontal part (11) is an acute angle.

8. The train operation door closer according to claim 1, characterized in that, The end of the contact part (2) is bent downward.

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