Door shield for container flatcar

Abstract

The utility model relates to the technical field of container transportation equipment, and particularly discloses a door shield for a container flatcar, which comprises a mounting bottom plate, a vertical plate, a rotating block, a rotating shaft, a locking nut, a positioning pin, a bolt, a sliding bolt, a spring and the like. The rotating block connected through the rotating shaft can be adjusted according to the position of the container door, the rotating block is locked through cooperation of the positioning pin and the bolt after rotation, meanwhile, the sliding bolt enters the pre-positioning hole in the rotating block under the action of the spring, the preliminary limiting function is achieved, and the friction force of contact between the baffle and the door body is enhanced through the anti-skid lines; and the overall structure is convenient and fast to install, reliable in positioning, high in anti-seismic performance and suitable for fixing and protecting containers of different sizes.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the container door stop technical field, concretely relates to a container flatcar door stop. BACKGROUND

[0002] With the wide application of container transportation, railway flatcars gradually become an important means of container transfer in long-distance transportation. In order to effectively limit the swing of the container door body during transportation, prevent the door body from opening or structure loosening due to vibration, it is usually necessary to set a door stop device at the end of the flatcar for limiting and fixing the container door. The existing door stop structure is mostly fixed or semi-fixed design, which has single structure, poor adaptability, and is difficult to flexibly adjust according to containers of different sizes or structures, and is prone to problems such as inconvenient installation, unstable positioning, poor shock resistance and the like.

[0003] Specifically, the conventional door stop has the following deficiencies in actual application: on the one hand, the door stop assembly is mostly dependent on manual adjustment during installation, lacks self-adaptability to the container door structure, resulting in complex assembly and low efficiency; on the other hand, during train operation, due to continuous vibration, the door stop is prone to problems such as thread loosening and connecting piece falling off, thereby affecting the fixing effect of the container door and existing certain safety hazards. In addition, the existing structure is imperfect in the positioning and locking of the rotating baffle, lacks effective limiting and anti-falling measures, and is prone to baffle rotation, affecting the fixing reliability. SUMMARY

[0004] In view of the problems existing in the prior art, the purpose of the utility model is to provide a container flatcar door stop, which can realize simple structure, convenient installation, stable positioning, significant anti-loosening effect and be suitable for flatcar door stop structures for container door bodies of different sizes.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0006] A container flatcar door stop, comprising installation bottom plates symmetrically installed at both ends of the surface of the flatcar main body respectively, the installation bottom plates corresponding to the container door, the installation bottom plates being fixed with the flatcar main body through bolts, vertical fixed plates being symmetrically fixed on one side of the surface of the installation bottom plate, first through holes and second through holes being formed on the surface of the two vertical fixed plates, the first through holes being located above the second through holes, a rotating shaft being inserted into the first through hole, a rotating block being rotatably installed on the surface of the rotating shaft, a limiting plate being arranged at the end of the rotating shaft, a locking nut being screwed on the other end of the rotating shaft, the limiting plate and the locking nut being respectively arranged outside the two vertical fixed plates, a positioning pin being penetrated through the second through hole and the rotating block, a limiting groove being vertically formed below the outside of the limiting plate, a pin head being arranged at one end of the positioning pin, a connecting plate being vertically arranged on the surface of the pin head, the connecting plate being matched with the internal size of the limiting groove.

[0007] Further, the side of the rotating block top facing the central position of the flat car body is provided with a baffle, and the end face of the baffle is rolled with anti-skid lines.

[0008] Further, the end of the positioning pin away from the connecting plate is vertically inserted with a plug pin, the plug pin is in a structure of large at the top and small at the bottom, and the plug pin corresponds to the connecting plate.

[0009] Further, one of the vertical plates is provided with a boss, the inside of the boss is hollow and open, one side of the rotating block is provided with a pre-positioning hole, and the boss corresponds to the pre-positioning hole in the vertical state.

[0010] Further, the inside of the boss is slidably provided with a slide bolt, the end of the slide bolt is provided in a hemispherical shape, and the end of the slide bolt is matched with the inside size of the pre-positioning hole.

[0011] Further, the inside of the boss is placed with a spring, and the spring is in contact with one end of the slide bolt.

[0012] Compared with the prior art, the utility model has the beneficial effects that:

[0013] The utility model discloses a door stop assembly of a flat car, which comprises a flat car body, a mounting bottom plate arranged at the two ends of the flat car body, a vertical plate arranged on the mounting bottom plate, a first through hole and a second through hole arranged on the vertical plate in sequence, and a rotating block arranged on the vertical plate and matched with the mounting bottom plate through a rotating shaft.

[0014] The rotating block can be adjusted in angle around the vertical plate through the rotating shaft, and the end of the rotating block is provided with a baffle for directly contacting with the container door body, and the surface of the baffle is provided with anti-skid lines, so that the friction between the door stop part and the container door is effectively improved, the sliding of the door body or the displacement of the door stop caused by the vibration of the vehicle during transportation is prevented, the problem of insufficient door stop performance and large door body shaking hidden danger of the existing door stop is solved, and the transportation safety is enhanced.

[0015] The middle part of the rotating block is provided with a structure for the positioning pin to pass through, one end of the positioning pin is provided with a pin head, the connecting plate is arranged on the pin head and is inserted into the limiting groove outside the limiting plate to limit the rotation of the positioning pin, and the other end is inserted into the plug pin for preventing falling off, and through the cooperation of the structure, the vibration loosening between the rotating shaft and the locking nut in the train transportation vibration environment is effectively prevented, the rotating block is ensured to be in a stable state at all times, the door stop structure is avoided from being invalid, and the problems of easy loosening of the connecting piece and poor locking reliability in the existing structure are solved.

[0016] The convex boss is arranged on the top of the vertical plate, and a sliding bolt is arranged in the convex boss, and the end of the sliding bolt is arranged as a semispherical shape to adapt to a predetermined positioning hole on the surface of the rotating block; the sliding bolt is pushed outward by a spring, so that the rotating block is automatically inserted into the predetermined positioning hole when the rotating block is rotated to the vertical position, thereby realizing preliminary angle limiting and avoiding mispositioning caused by the failure of the operator to lock in time; the structure design improves the convenience in the operation process and the automation degree of the preliminary positioning of the structure, and solves the problems of difficult angle adjustment and lack of pre-locking measures of the traditional door stop. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a flatcar and door stop installation structure schematic view of the utility model;

[0018] Figure 2 It is a rotating block installation structure schematic view of the utility model;

[0019] Figure 3 It is a Figure 2 explosion structure schematic view of the utility model;

[0020] Figure 4 It is a Figure 2 rear view structure schematic view of the utility model;

[0021] Figure 5 It is a sliding bolt cross section installation structure schematic view of the utility model.

[0022] In the drawings, the component list represented by each sign is as follows:

[0023] 1, flatcar main body; 2, installation bottom plate; 21, vertical plate; 22, first through hole; 23, second through hole; 24, convex boss; 3, rotating block; 31, baffle; 32, anti-skid pattern; 33, predetermined positioning hole; 4, rotating shaft; 41, limiting plate; 42, limiting groove; 5, locking nut; 6, positioning pin; 61, pin head; 62, connecting plate; 7, bolt; 8, sliding bolt; 9, spring. DETAILED DESCRIPTION

[0024] In order to make the purpose and advantages of the utility model more clear and apparent, the utility model is specifically described below in combination with examples. It should be understood that the following text is only used to describe one or several specific embodiments of the utility model, and does not strictly limit the protection scope of the utility model specifically requested. EMBODIMENT

[0025] Reference Figures 1-5As shown, a kind of door stop for container flatcar includes the installation bottom plate 2 that is symmetrically installed on the surface both ends of flatcar main body 1 respectively;Installation bottom plate 2 with container door each other corresponds, installation bottom plate 2 is fixed by bolt with flatcar main body 1;The vertical fixed plate 21 of one side of installation bottom plate 2 surface is symmetric;Two vertical fixed plates 21 surface are provided with first through-hole 22 and second through-hole 23, first through-hole 22 is placed on the top of second through-hole 23;The rotating shaft 4 is inserted into the inner side of first through-hole 22, the rotating shaft 4 penetrates two vertical fixed plates 21, the rotating shaft 4 surface is rotatably installed with rotating block 3, rotating block 3 can be angle-adjusted around the surface of rotating shaft 4;The end of rotating shaft 4 is provided with limit plate 41, for preventing rotating shaft 4 from moving along the axial direction, the other end of rotating shaft 4 is screwed with locking nut 5, which is fixedly connected with rotating shaft 4 by threaded connection;Limit plate 41 and locking nut 5 are respectively placed on the outer side of two vertical fixed plates 21, to improve the stability of rotating block 3 in the vibration environment, prevent rotating block 3 and rotating shaft 4 from loosening during transportation;The positioning pin 6 penetrates the installation hole provided in the middle of rotating block 3, which is provided in the inner side of second through-hole 23, the penetration of positioning pin 6 can prevent rotating block 3 from rotating unexpectedly around rotating shaft 4, and improve the locking effect of the door stop structure;The limit slot 42 is vertically provided below the outer side of limit plate 41, for limiting the connecting plate 62;The pin head 61 is provided at one end of the positioning pin 6, the connecting plate 62 is vertically and fixedly installed on the surface of the pin head 61, the connecting plate 62 is adapted to the internal size of the limit slot 42, and after being inserted and matched, it can prevent the body of the positioning pin 6 from rotating, so as to further stabilize the positioning state of the rotating block 3.

[0026] As shown in Figure 3 , the side of the top of rotating block 3 facing the center position of flatcar main body 1 is provided with a baffle 31, and the baffle 31 is used for directly limiting the container door to prevent the door body from shaking or impacting during transportation;The end surface of baffle 31 is rolled with anti-skid lines 32, the anti-skid lines 32 increase the friction with the container door body through the protruding structure, so as to enhance the stopping effect, and avoid the stopping failure caused by oil stains or wetness on the surface of the container;The existence of anti-skid lines 32 improves the adaptability and practicality of the door stop assembly, and guarantees the safety and stability during transportation.

[0027] As shown in Figure 3 and Figure 4 , the plug pin 7 is vertically inserted into the end of the positioning pin 6 away from the connecting plate 62, the plug pin 7 adopts the structure design of large at the top and small at the bottom, and the locking reliability is improved by the tapered insertion method;The plug pin 7 corresponds to the connecting plate 62, the plug pin 7 penetrates the insertion hole provided at the tail end of the positioning pin 6, the insertion of the plug pin 7 can effectively prevent the positioning pin 6 from falling off due to vibration during transportation, further enhance the fixed state of the rotating block 3, and ensure the overall stability of the door stop assembly during train operation from the structure.

[0028] As shown in Figure 5As shown in the drawings, the top of the vertical plate 21 is provided with a boss 24, which is a hollow structure, and the internal space is used for sliding positioning of the sliding bolt 8; the inside of the boss 24 is hollow, and corresponds to the pre-positioning hole 33 opened on the rotating block 3 in the vertical state; the pre-positioning hole 33 is arranged on one side of the rotating block 3, and is used to receive the end of the sliding bolt 8 when the rotating block 3 is rotated to a specified angle; the cooperation of the boss 24 and the pre-positioning hole 33 in the spatial position enables the rotating block 3 to be preliminarily positioned and fixed after being rotated to the vertical position, thereby improving the angle guiding ability and positioning stability of the structure during operation.

[0029] Referring to Figure 5 As shown in the drawings, the sliding bolt 8 is slidingly installed in the boss 24, and slides along the length direction of the boss 24; the end of the sliding bolt 8 is provided in a hemispherical shape, which facilitates sliding into the pre-positioning hole 33, thereby achieving automatic limiting positioning of the rotating block 3; the size of the end of the sliding bolt 8 is matched with the internal structure of the pre-positioning hole 33, so that sufficient surface contact can be provided after sliding, thereby enhancing the stability of the preliminary positioning and providing clear angle alignment conditions for the subsequent insertion of the positioning pin 6.

[0030] Referring to Figure 5 As shown in the drawings, the spring 9 is placed in the boss 24 and is in contact with one end of the sliding bolt 8; the spring force generated by the spring 9 acts on the sliding bolt 8, so that the sliding bolt 8 always has a tendency to push outward; when the rotating block 3 is in the rotating process, the end of the sliding bolt 8 can automatically adjust the position with the rotating angle changing under the action of the spring 9; when the rotating block 3 is rotated to the vertical state, the sliding bolt 8 enters the inside of the pre-positioning hole 33 under the pushing of the spring 9, thereby achieving the preliminary positioning and locking effect of the rotating block 3; the setting of the spring 9 enhances the operation convenience and self-locking ability of the rotating assembly, avoids the deflection of the rotating block 3 due to its own weight or external force before the positioning pin 6 is inserted, and improves the anti-loose performance and operation efficiency of the overall structure.

[0031] Embodiment 2: Door stop structure with installation bottom plate and vertical plate adjusting function

[0032] When a container door stop device is arranged on a railway flat car, two installation bottom plates made of Q235 carbon steel are used, the thickness of the bottom plate is 10 mm, and the bottom plate is fixedly connected with the flat car body through M12 high-strength galvanized bolt and welded groove steel; one side of each installation bottom plate is provided with a vertical plate with a height of 200 mm, a width of 50 mm and a thickness of 8 mm, and the vertical plate is vertically welded on the surface of the bottom plate; a first through hole with a diameter of Φ18 mm is arranged on the upper part of the vertical plate, and a second through hole with a diameter of Φ20 mm is arranged on the lower part, which are used to install the rotating shaft and the positioning pin respectively. According to the width size of the transported container door, the transverse arrangement position of the installation bottom plate can be adjusted, so that the door stop can be aligned with the door body to realize structure adaptation. The structure ensures the positional consistency between the door stop and the container door during transportation, and effectively improves the universality.

[0033] Comparative case: The traditional door stop structure adopts an integrated fixed installation method, the base and the stand are not adjustable, and the size is only suitable for specific types of containers. When encountering non-standard door distance, parts need to be replaced or temporary pads need to be added, resulting in low work efficiency, complex installation, and easy structural deviation problems, which cannot guarantee safe locking effect.

[0034] Example 3: Adjustable rotating block structure with anti-skid baffle

[0035] The rotating block is made of No. 45 quenched and tempered steel, with a thickness of 15 mm, and a top welding size of 100 mm x 60 mm x 6 mm. The front end of the baffle is processed by a numerical control rolling machine to form a cross anti-skid pattern with a depth of 1 mm and a pitch of 2 mm. The rotating block is installed between two vertical plates through a Φ18 mm shaft, and the left and right ends of the shaft are respectively installed with a limiting plate and a M12 stainless steel locking nut, and an open washer is provided for anti-loose treatment. The baffle faces the container door, and after the rotating block is rotated to horizontal, it is tightly fitted with the door surface to prevent door vibration deviation through friction locking. After the shaft is installed, the rotating block is allowed to rotate within the range of -30° to +90°, which is suitable for different transportation postures.

[0036] Comparative case: The existing door stop part of the rotating structure adopts an ordinary flat baffle, the surface is smooth, especially when encountering water stains, oil stains or frost on the door surface, the friction coefficient is greatly reduced, and the baffle is prone to slipping, which cannot provide effective limiting and increases the risk of door opening or displacement during transportation.

[0037] Example 4: Positioning pin anti-rotation mechanism and anti-falling bolt cooperation structure

[0038] A Φ20 mm circular hole is provided in the rotating block for the positioning pin to pass through. The positioning pin is made of stainless steel 304, with a length of 120 mm, and a Φ40 mm circular pin head at one end. The pin head is welded with a connecting plate with a width of 30 mm, a thickness of 3 mm, and a length of 50 mm. A limiting groove with the same size as the connecting plate is milled below the limiting plate on the outside of the vertical plate. After insertion, an embedded anti-rotation cooperation is formed to prevent the positioning pin from rotating due to vibration during train operation. The other end of the positioning pin is provided with a Φ6 mm insertion hole, and a HS-2 tapered bolt is inserted. The insertion bolt is made of high-strength nylon and has a elastic clamping groove to prevent automatic falling.

[0039] Comparative case: In some door stop products, the positioning pin is a simple round bar structure without an anti-rotation mechanism. Under long-distance vibration conditions, it is easy to rotate and fall out, causing the rotating block to loosen or rotate, and ultimately causing the door stop to fail, which poses a great safety hazard.

[0040] Example 5: Rotating block auxiliary locking system with initial positioning sliding limiting structure

[0041] A hollow boss with a size of 50mm*50mm*40mm is welded on the top of the vertical plate, a 45# steel car slide is arranged in the interior, a slide bolt with a diameter of Φ10mm and a length of 35mm is arranged, one end of the slide bolt is processed into a hemispherical shape, the other end is connected with a spring, the spring is selected from stainless steel AISI 302 compression spring, the elastic force is 6N; the end of the slide bolt is always pushed out by the spring force; a predetermined positioning hole with a diameter of Φ10mm is drilled in one side surface of the rotating block, when the rotating block is rotated to the vertical state, the slide bolt is automatically inserted into the predetermined positioning hole, and the preliminary angle limiting effect is achieved, and a stable foundation is created for subsequent insertion of the positioning pin.

[0042] The conventional door stop cannot be automatically limited during installation, and two people are required to cooperate, one person holds the rotating block, and the other person inserts the positioning pin, the operation efficiency is low, the angle is not accurate, the positioning pin is damaged, the maintenance and replacement costs are increased, and the positioning fails or the positioning pin is damaged.

[0043] The working principle of the utility model is as follows: first, according to the size of the container, the bottom plate 2 is fixedly installed through bolts, so that the installation bottom plate 2 corresponds to the container door, then the rotating block 3 is arranged between the two vertical plates 21, and the rotating shaft 4 is inserted, and the rotating shaft 4 is locked and fixed through the locking nut 5, and the limiting groove 42 is kept vertical downward during installation, at this time, the rotating block 3 can rotate around the surface of the rotating shaft 4, after the container is placed on the surface of the flat car main body 1, the rotating block 3 is rotated to make the baffle 31 contact with the container door, the anti-skid lines 32 can improve the friction force with the container door, then the positioning pin 6 is penetrated, and the pin head 61 is attached to the outer side surface of the vertical plate 21, the rotating positioning pin 6 makes the connecting plate 62 enter the inside of the limiting groove 42, then the other end is penetrated with the plug pin 7, so as to prevent the positioning pin 6 from falling off, at this time, the rotating block 3 is kept fixed, due to the cooperation of the connecting plate 62 and the limiting groove 42, the rotating shaft 4 and the positioning pin 6 are prevented from rotating, the anti-rotation of the rotating shaft 4 can prevent the rotation from being loose due to vibration during transportation, and the anti-rotation of the positioning pin 6 can keep the connecting plate 62 in the vertical state, so as to prevent the plug pin 7 from being separated, so as to improve the stability of the door stop;

[0044] When the rotating block 3 is rotated, the slide bolt 8 always has an outward force due to the existence of the spring 9, the end of the slide bolt 8 will slightly exceed the end surface of the boss 24, when the rotating block 3 is rotated to the vertical position, the slide bolt 8 can enter the inside of the predetermined positioning hole 33, so as to keep the stability of the rotating block 3 after the initial rotation, at this time, the hole on the surface of the rotating block 3 corresponds to the second through hole 23, so as to facilitate the penetration of the positioning pin 6 when locked, and improve the convenience during assembly.

[0045] The above merely describes preferred embodiments of the present application, and it should be noted that, for those skilled in the art, without departing from the principles of the present application, a number of improvements and refinements can be made, and these improvements and refinements should also be considered as the protection scope of the present application. Structures, devices and operation methods not specifically described and explained in the present application are implemented according to conventional means in the art, unless otherwise specified and limited.

Claims

1. A door stop for a container flatcar, comprising mounting base plates (2) symmetrically installed at both ends of the surface of the flatcar body (1), wherein the mounting base plates (2) correspond to the container doors, characterized in that: The mounting base plate (2) is fixed to the flatcar body (1) by bolts. A vertical plate (21) is symmetrically and vertically fixed to one side of the mounting base plate (2). A first through hole (22) and a second through hole (23) are provided on the surfaces of the two vertical plates (21). The first through hole (22) is positioned above the second through hole (23). A rotating shaft (4) is inserted into the inner side of the first through hole (22). A rotating block (3) is rotatably mounted on the surface of the rotating shaft (4). A limit plate (41) is provided at the end of the rotating shaft (4). The other end is screwed with a locking nut (5). The limiting plate (41) and the locking nut (5) are respectively placed on the outside of the two upright plates (21). The second through hole (23) is penetrated by a positioning pin (6). The positioning pin (6) penetrates the rotating block (3). A limiting groove (42) is vertically opened below the outside of the limiting plate (41). One end of the positioning pin (6) is provided with a pin head (61). A connecting plate (62) is vertically provided on the surface of the pin head (61). The connecting plate (62) is adapted to the internal size of the limiting groove (42).

2. A door stop for a container flatcar according to claim 1, characterized in that: A baffle (31) is provided on the side of the top of the rotating block (3) facing the center of the flatcar body (1), and the end face of the baffle (31) is rolled with anti-slip texture (32).

3. A door stop for a container flatcar according to claim 1, characterized in that: The positioning pin (6) is vertically inserted into a pin (7) at one end away from the connecting plate (62). The pin (7) has a structure that is larger at the top and smaller at the bottom, and the pin (7) corresponds to the connecting plate (62).

4. A door stop for a container flatcar according to claim 1, characterized in that: One of the upright plates (21) is provided with a boss (24) on the top. The boss (24) is hollow inside with an open inner side. A pre-positioning hole (33) is provided on one side of the rotating block (3). The boss (24) corresponds to the pre-positioning hole (33) below the vertical state.

5. A door stop for a container flatcar according to claim 4, characterized in that: The boss (24) has a sliding bolt (8) inside it. The end of the bolt (8) is set as a hemispherical shape and the end of the bolt (8) is adapted to the internal size of the pre-positioning hole (33).

6. A door stop for a container flatcar according to claim 5, characterized in that: A spring (9) is placed inside the boss (24), and the spring (9) is in contact with one end of the sliding bolt (8).

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