A secondary locking system for lower side doors of universal open wagons

Abstract

The present invention discloses a secondary locking system for the lower side door of a universal open car, including a lower side door panel, a lower side door hinge and a buckle assembly, and also includes a secondary anti-opening device, the secondary anti-opening device including a lock seat, a lock pin and a lock iron, the lock seat is symmetrical on the left and right, and the left and right side panels extend forward to form a lock iron placement groove, the lock iron is respectively provided with a lifting and weight reduction hole and a lock iron installation hole, the lock pin horizontally passes through the lock iron installation hole and the left and right side panels of the lock seat, so that the lock iron is installed in the lock iron placement groove, the lock pin includes a lock pin rotating shaft and a lock pin handle which is initially vertically installed at the left end of the lock pin rotating shaft, the lock pin rotating shaft includes a thick diameter section 711 with a diameter larger than the hole diameter of the lock iron installation hole and a thin diameter section with a diameter adapted to the lock iron installation hole, the thick diameter section 711 is symmetrically provided with planes up and down, and the distance between the planes is smaller than the diameter of the thin diameter section, and the inner side surface of the lock iron installation hole is symmetrically provided with limiting protrusions front and back. It has the advantages of saving time and labor, reducing costs, providing double protection for unlocking, strict unlocking conditions, and good locking effect.

Description

Technical Field

[0001] The invention belongs to the technical field of anti-opening of lower side doors of gondola cars, and in particular relates to a secondary locking system for lower side doors of universal gondola cars. Background Art

[0002] In the use of open wagons, the door hasp used to lock the lower side door works on the principle of gravity lock. When the gap between the door hasp and the lower side door hinge is too large due to wear, the iron buckle will rotate and open under the vibration of the vehicle, causing the door hasp to fail to lock. At the same time, since the open wagon needs to be unloaded by a dumper during use, the vehicle will flip 180°, and the iron buckle will also rotate and fail during the flipping process, causing the lower side door to open accidentally. The existing solution usually uses wire to bind the lower side door hasp to prevent the lower side door hasp from losing the limit at the lower end of the hinge due to vibration or flipping, thereby opening the lower side door of the open wagon, which poses a great safety hazard. In addition, due to the large number of railway open wagons and their frequent use, binding with wire will cause a lot of material waste and labor costs. Summary of the Invention

[0003] The present invention aims to provide a universal secondary locking system for the lower side doors of open wagons, thereby eliminating the hidden danger of the lower side doors of open wagons and solving the problem of failure to open under specific working conditions such as vehicle vibration and rollover caused by the existing single gravity lock door buckle anti-opening measure.

[0004] To this end, the technical solution adopted by the present invention is: a universal open car lower side door secondary locking system, including a lower side door panel installed on the outer wall of the open car side wall, a lower side door hinge installed on the outer wall of the open car side wall symmetrically and rotatably, and a buckle assembly installed on the open car side beam with left and right mirror symmetry and used to clamp the lower end of the corresponding lower side door hinge, and also includes a secondary anti-opening device installed on the open car side beam and centered on the lower end of the corresponding lower side door panel, the secondary anti-opening device includes a lock seat, a lock pin and a lock iron, the lock seat is symmetrical on the left and right, and the left and right side plates extend forward to form a lock iron placement groove, the lock iron is respectively provided with a lifting and weight reduction hole and a lock iron installation hole, the lock pin passes horizontally through the lock iron installation hole and the left and right side plates of the lock seat to install the lock iron in the lock iron placement groove, the lock pin includes The locking pin shaft and the locking pin handle installed at the left end of the locking pin shaft in an initially vertical state, the locking pin shaft includes a thick diameter section with a diameter larger than the diameter of the lock iron mounting hole and a thin diameter section with a diameter adapted to the lock iron mounting hole, the thick diameter section is symmetrically provided with planes up and down and the distance between the planes is smaller than the diameter of the thin diameter section, the inner side surface of the lock iron mounting hole is symmetrically provided with limiting protrusions front and back, thereby forming a narrow opening for the narrowest part of the thick diameter section to pass through; when the locking pin shaft is rotated to the narrowest part of the thick diameter section so as to pass through the narrow opening, the locking iron can be unlocked by translating the locking iron from the thin diameter section to the thick diameter section, lifting it to pass through the narrow opening, and then translating it back to the thin diameter section and rotating it 180°. When the secondary anti-opening device rotates as a whole with the vehicle, locking can be achieved by the thick diameter section blocking the translation of the locking iron and the limiting protrusion restricting the thin diameter section from passing through the narrow opening.

[0005] As a preferred embodiment of the above scheme, the width of the narrow opening formed by the limiting protrusion is larger than the narrowest spacing of the thick diameter section and smaller than the diameter of the thin diameter section, so as to ensure that only the narrowest part of the thick diameter section can pass through, and the size design is reasonable; the distance between the limiting protrusion and the top surface of the lock iron mounting hole is larger than the diameter of the thick diameter section, which effectively avoids bumps and the design size is reasonable.

[0006] Further preferably, the diameter of the thin-diameter section is 21 mm, the diameter of the thick-diameter section is 25 mm, the upper and lower plane spacing is 16 mm, the inner width of the lock iron mounting hole is 23 mm, and the narrow opening width formed by the limiting protrusion is 18 mm. The design dimensions meet the requirements.

[0007] More preferably, the distance between the upper part of the lock iron and the lower door panel is 10mm to 18mm. During use, the lower door panel will expand outward, so a gap needs to be reserved to prevent the lock iron from colliding with the expanding lower door and being damaged.

[0008] It is further preferred that the lower side door hinge is hingedly installed on the lower side door panel through a hinge seat, a hanging ring is installed at the lower part of the lower side door hinge, the buckle assembly includes a buckle seat and a buckle rotatably installed on the buckle seat, the middle part of the buckle corresponds to the lower side door hinge and is a semicircular plate structure, thereby avoiding and buckling the lower end of the lower side door hinge, the structure is interlocking and the design is reasonable.

[0009] It is further preferred that one end of the buckle seat is provided with a rotating shaft for installing the buckle and the other end is provided with a buckle mounting groove. The upper part of the buckle mounting groove is provided with a threaded hole and is equipped with a stud. When the buckle is rotated along the rotating shaft to be horizontally mounted on the buckle mounting groove, the locking function can be achieved by screwing the stud into the threaded hole to limit the rotation of the buckle, thereby realizing a preliminary anti-opening measure for the lower side door of the open car.

[0010] It is further preferred that the upper and lower corners of the limiting protrusion are chamfered to avoid collision with the corners of the thick-diameter end plane, and when the thick-diameter section enters the narrow mouth, the locking iron can be lifted with one hand without having to continue holding the locking pin handle with the hand, thereby reducing the amount of operating tasks and the design is clever.

[0011] Beneficial effects of the present invention:

[0012] (1) Compared with the existing method of simply using wire to tie the lower door buckle for the initial anti-opening measure, this solution also implements a secondary anti-opening device to achieve further anti-opening measures, thereby ensuring that the lower door will not open accidentally when the door buckles of the open car lower door are all opened and fail due to vehicle body vibration or rollover, greatly improving operational safety, eliminating the process of tying steel wire at the buckle to enhance stability, saving time and effort, and reducing costs.

[0013] (2) The thick diameter section of the lock pin shaft is symmetrically provided with planes in the upper and lower parts and the distance between the planes is smaller than the diameter of the thin diameter section. When the lock pin handle is in the vertical state, the planes of the thick diameter section are arranged in the upper and lower parts, thereby limiting the lock iron on the thin diameter section. The design is reasonable. The inner side surface of the lock iron mounting hole is symmetrically provided with limiting protrusions in the front and back parts, thereby forming a narrow opening for the narrowest part of the thick diameter section to pass through. When the lock pin handle is rotated from the vertical state to the horizontal state, the plane of the lock pin shaft is also synchronously rotated to be parallel to the narrow opening, so that the lock iron can be unlocked by moving it from the thin diameter section to the thick diameter section and lifting it to pass through the narrow opening and then moving it back to the thin diameter section and rotating it 180 degrees. The unlocking step is simple to operate, but the unlocking condition needs to meet the lock iron translation and lock iron upward movement, thus providing double protection for unlocking, strict unlocking conditions and exquisite structural design.

[0014] (3) When the vehicle is in normal driving state, the secondary locking device will vibrate. However, since the inner diameter of the locking iron installation hole is larger than the diameter of the thin diameter section and smaller than the diameter of the thick diameter section, the locking iron can be limited by the thick diameter section within the thin diameter section, thereby limiting the left and right directions of the locking iron. Then, since the distance between the planes of the thick diameter section is smaller than the diameter of the thin diameter section, only the narrowest part of the thick diameter section can pass through the limiting protrusions, but not the thin diameter section. Therefore, the vertical and horizontal directions of the locking iron can be limited. The locking iron and the locking pin remain relatively stationary under the action of gravity, thus achieving the locking function.

[0015] (4) When the vehicle rotates clockwise or counterclockwise on the tipping machine, the secondary locking device will rotate synchronously. However, at any angle of rotation, the diameter of its thin diameter section is larger than the gap between the limiting protrusions, so the lock iron can be limited at one end of the lock iron mounting hole. Even if the lock pin handle is flipped under the action of gravity to make the thick diameter section plane parallel to the limiting protrusion surface, the lock iron still needs a lateral force to move it to the thick diameter section of the lock pin to cause the lock iron to fail. Moreover, during the flipping process, the lock pin handle cannot maintain a state for a long time due to the influence of gravity. Therefore, in order to unlock during flipping, the lock iron must move horizontally and upward at the same time. The unlocking conditions are very harsh and it is impossible to complete unlocking without external force. Therefore, the locking function can be realized in the flipping working condition of the tipping machine, and the locking effect is good.

[0016] In summary, the invention has the advantages of saving time and effort, reducing costs, providing double protection for unlocking, strict unlocking conditions and good locking effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the present invention.

[0018] Figure 2 for Figure 1 A partial enlarged view of point A.

[0019] Figure 3 This is a front view of the lock iron.

[0020] Figure 4 Schematic diagram of the structure of the lock pin.

[0021] Figure 5 This is a structural diagram of the secondary anti-opening device in the unlocked state with the lock pin handle rotated to the horizontal state.

[0022] Figure 6 This is a structural diagram of the secondary anti-opening device in the unlocked state with the lock iron moving left.

[0023] Figure 7 This is a structural diagram of the secondary anti-opening device in the unlocked state with the lock iron lifted up.

[0024] Figure 8 This is a structural diagram of the secondary anti-opening device in the unlocked state with the lock iron moving rightward.

[0025] Figure 9 This is a structural diagram of the secondary anti-opening device in the unlocked state with the lock iron rotated 180°.

[0026] Figure 10 This is a structural diagram of the secondary anti-opening device in the unlocked state with the lock pin handle rotated to the vertical state. DETAILED DESCRIPTION

[0027] The present invention will be further described below by way of examples and in conjunction with the accompanying drawings:

[0028] Combine Figure 1 — Figure 10 As shown, a universal secondary locking system for the lower side door of an open car is composed of a lower side door panel 2 mounted on the outer wall of the open car side wall 1, a lower side door hinge 3 symmetrically and rotatably mounted on the outer wall of the open car side wall 1, a buckle assembly 5 mirror-symmetrically mounted on the open car side beam 4 and used to clamp the lower end of the corresponding lower side door hinge 3, and a secondary anti-opening device mounted on the open car side beam 4 and centered on the lower end of the lower side door panel 2.

[0029] The lower door hinge 3 is hingedly mounted on the lower door panel 2 via a hinge seat 31 .

[0030] A hanging ring 32 is installed at the lower part of the lower side door hinge 3.

[0031] The buckle assembly 5 consists of a buckle seat 51 and a buckle 52 rotatably mounted on the buckle seat 51 .

[0032] The middle portion of the buckle 52 is a semicircular plate-shaped structure corresponding to the lower side door hinge 3, thereby avoiding and buckling the lower end of the lower side door hinge 3.

[0033] One end of the buckle seat 51 is provided with a rotating shaft for installing the buckle 52, and the other end is provided with a buckle installation groove.

[0034] The upper portion of the buckle placement groove is provided with a threaded hole and equipped with a stud.

[0035] When the buckle 52 rotates along the rotating shaft to be horizontally placed on the buckle installation groove, the locking function can be achieved by screwing the stud into the threaded hole to limit the rotation of the buckle 52.

[0036] The secondary anti-opening device consists of a lock seat 6, a lock pin 7 and a lock iron 8.

[0037] The lock base 6 is bilaterally symmetrical and the left and right side plates extend forward to form a lock iron placement groove 61.

[0038] The lock iron 8 is provided with a lifting and weight-reducing hole 82 and a lock iron installation hole 81 at the upper and lower parts thereof.

[0039] The lock pin 7 passes horizontally through the lock iron installation hole 81 and the left and right side plates of the lock base 6 so that the lock iron 8 is installed in the lock iron placement groove 61.

[0040] The lock pin 7 is composed of a lock pin rotating shaft 71 and a lock pin handle 72 which is installed at the left end of the lock pin rotating shaft 71 and is initially in a vertical state.

[0041] The lock pin shaft 71 is composed of a thick diameter section 711 having a diameter larger than that of the lock iron mounting hole 81 and a thin diameter section 712 having a diameter matching that of the lock iron mounting hole 81 .

[0042] The thick-diameter section 711 is symmetrically provided with planes in the upper and lower parts, and the distance between the planes is smaller than the diameter of the thin-diameter section 712 .

[0043] The inner side surface of the lock iron mounting hole 81 is symmetrically provided with limiting protrusions 811 in the front and back directions, thereby forming a narrow opening for the narrowest part of the thick diameter section 711 to pass through.

[0044] The width of the narrow opening formed by the limiting protrusion 811 is larger than the narrowest spacing of the large diameter section 711 and smaller than the diameter of the small diameter section 712 .

[0045] The distance between the limiting protrusion 811 and the top surface of the lock iron mounting hole 81 is greater than the diameter of the thick-diameter section 711 .

[0046] The upper and lower corners of the limiting protrusion 811 are chamfered.

[0047] The diameter of the thin section 712 is preferably 21 mm, the diameter of the thick section 711 is preferably 25 mm, and the distance between the upper and lower planes is preferably 16 mm. The inner width of the lock iron mounting hole 81 is preferably 23 mm, and the width of the narrow mouth formed by the limiting protrusion 811 is preferably 18 mm.

[0048] The distance between the upper portion of the lock iron 8 and the lower door panel 2 is preferably 10 mm to 18 mm.

[0049] Figure 5 — Figure 10The unlocking steps of the secondary anti-opening device are shown. When the lock pin shaft 71 is rotated to the narrowest part of the thick diameter section 711 and can pass through the narrow opening, the lock iron 8 can be unlocked by translating it from the thin diameter section 712 to the thick diameter section 711 and lifting it to pass through the narrow opening, then translating it back to the thin diameter section 712 and rotating it 180°.

[0050] When the secondary anti-opening device rotates as a whole with the vehicle, the thick-diameter section 711 blocks the translation of the lock iron 8 and the limiting protrusion 811 restricts the thin-diameter section 712 from passing through the narrow opening to achieve locking.

[0051] When the vehicle is running, under the action of gravity, even if the lock pin handle 72 rotates due to vibration, it will remain in the vertical downward position due to gravity. However, since the inner diameter of the lock iron mounting hole 81 is larger than the diameter of the thin diameter section 712 and smaller than the diameter of the thick diameter section 711, the lock iron 8 can be limited by the thick diameter section 711 in the thin diameter section 712, thereby limiting the left and right directions of the lock iron 8. Then, since the distance between the planes of the thick diameter section 711 is smaller than the diameter of the thin diameter section 712, only the narrowest part of the thick diameter section 711 can pass through the limiting protrusions 811, and the thin diameter section 712 cannot pass through. Therefore, the upper and lower positions of the lock iron can be limited, and the lock iron and the lock pin remain relatively stationary under the action of gravity, thereby realizing the locking function.

[0052] When the vehicle rotates clockwise or counterclockwise on the tipping machine, the secondary locking device will rotate synchronously, but when it rotates to any angle, the diameter of its thin diameter section 712 is larger than the gap between the limiting protrusions 811, so the lock iron 8 can be limited to one end of the mounting hole of the lock iron 8. Even if the lock pin handle 72 is flipped under the action of gravity until the plane of the thick diameter section 711 is parallel to the surface of the limiting protrusion 811, the lock iron 8 also needs a lateral force to move it to the lock pin thick diameter section 711 to cause the lock iron 8 to fail. Moreover, during the flipping process, the lock pin handle 72 cannot maintain a state for a long time due to the influence of gravity. Therefore, in order to unlock during flipping, the lock iron 8 must move horizontally and upward at the same time. The unlocking conditions are very harsh, and it is impossible to complete the unlocking without external force. Therefore, the locking function can also be achieved in the flipping working condition of the tipping machine.

Claims

1. A universal lower side door secondary locking system for a gondola, comprising a lower side door panel (2) mounted on the outer wall of a gondola side wall (1), a lower side door hinge (3) symmetrically and rotatably mounted on the outer wall of the gondola side wall (1), and a latch assembly (5) mounted on the gondola side beam (4) in a mirror-image manner and used to clamp the lower end of the corresponding lower side door hinge (3), characterized in that: The invention also includes a secondary anti-opening device installed on the side beam (4) of the open car and centered at the lower end of the lower door panel (2), the secondary anti-opening device includes a lock seat (6), a lock pin (7) and a lock iron (8), the lock seat (6) is symmetrical on the left and right, and the left and right side plates extend forward to form a lock iron placement groove (61), the lock iron (8) is respectively provided with a lifting and weight reduction hole (82) and a lock iron installation hole (81) on the upper and lower sides, the lock pin (7) passes horizontally through the lock iron installation hole (81) and the left and right side plates of the lock seat (6) so as to install the lock iron (8) in the lock iron placement groove (61), the lock pin (7) includes a lock pin rotating shaft (71) and a lock pin handle (72) installed at the left end of the lock pin rotating shaft (71) in an initially vertical state, the lock pin rotating shaft (71) includes a thick diameter section (711) with a diameter larger than the hole diameter of the lock iron installation hole (81) and a thick diameter section (711) with a diameter similar to the hole diameter of the lock iron installation hole (81). The lock iron mounting hole (81) is adapted to the thin diameter section (712), the thick diameter section (711) is symmetrically provided with planes on the upper and lower sides, and the distance between the planes is smaller than the diameter of the thin diameter section (712), and the inner side surface of the lock iron mounting hole (81) is symmetrically provided with limiting protrusions (811) on the front and back sides, thereby forming a narrow opening for the narrowest part of the thick diameter section (711) to pass through; when the lock pin rotating shaft (71) is rotated to the narrowest part of the thick diameter section (711) so as to pass through the narrow opening, the lock iron (8) can be unlocked by translating from the thin diameter section (712) to the thick diameter section (711), lifting it to pass through the narrow opening, and then translating it back to the thin diameter section (712) and rotating it 180 degrees; when the secondary anti-opening device rotates as a whole with the vehicle, the thick diameter section (711) blocks the translation of the lock iron (8) and the limiting protrusion (811) limits the thin diameter section (712) from passing through the narrow opening to achieve locking.

2. The secondary locking system for the lower side door of a universal open wagon according to claim 1, characterized in that: The width of the narrow opening formed by the limiting protrusion (811) is greater than the narrowest spacing of the thick diameter section (711) and smaller than the diameter of the thin diameter section (712), and the distance between the limiting protrusion (811) and the top surface of the lock iron mounting hole (81) is greater than the diameter of the thick diameter section (711).

3. The secondary locking system for the lower side door of a universal open wagon according to claim 1, characterized in that: The diameter of the thin-diameter section (712) is 21 mm, the diameter of the thick-diameter section (711) is 25 mm, and the distance between the upper and lower planes is 16 mm. The inner width of the locking iron mounting hole (81) is 23 mm, and the width of the narrow opening formed by the limiting protrusion (811) is 18 mm.

4. The secondary locking system for the lower side door of a universal open wagon according to claim 1, characterized in that: The distance between the upper part of the lock iron (8) and the lower door panel (2) is 10 mm to 18 mm.

5. The secondary locking system for the lower side door of a universal open car according to claim 1, characterized in that: The lower door hinge (3) is hingedly mounted on the lower door panel (2) via a hinge seat (31); a hanging ring (32) is mounted on the lower portion of the lower door hinge (3); the buckle assembly (5) comprises a buckle seat (51) and a buckle (52) rotatably mounted on the buckle seat (51); the middle portion of the buckle (52) is a semicircular plate-shaped structure corresponding to the lower door hinge (3), thereby avoiding and buckling the lower end of the lower door hinge (3).

6. The secondary locking system for the lower side door of a universal open car according to claim 5, characterized in that: One end of the buckle seat (51) is provided with a rotating shaft for installing the buckle (52), and the other end is provided with a buckle placement groove. The upper part of the buckle placement groove is provided with a threaded hole and equipped with a stud. When the buckle (52) is rotated along the rotating shaft to be horizontally placed on the buckle placement groove, the locking function can be achieved by screwing the stud into the threaded hole to limit the rotation of the buckle (52).

7. The secondary locking system for the lower side door of a universal open wagon according to claim 1, characterized in that: The upper and lower corners of the limiting protrusion (811) are chamfered.

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