Intercity railway tunnel protection door

Abstract

The application belongs to the field of tunnel protective doors and relates to an intercity railway tunnel protective door, which comprises a door body and a door frame, the door body is installed on the door frame through a hinge, both sides of the front and rear ends of the door body are provided with a bolt mechanism, the bolt mechanism comprises a handle, two bolt latches, two supporting rods and a connecting rod, four positioning pin sleeves matched with the bolt latches, the handle is installed on the door body through a pin shaft and can rotate around the pin shaft, the two bolt latches are respectively installed on the upper and lower ends of the same side of the door body through pin shafts, the two supporting rods are fixedly connected with the two bolt latches respectively, the two supporting rods are parallel to each other, the two ends of the connecting rod are hingedly connected with the two supporting rods respectively, the rear end of the door frame is provided with four positioning pin sleeves, two positioning grooves are formed in the inner walls of the two sides of the door frame respectively, the door body further comprises an auxiliary downward pressing mechanism and an auxiliary upward lifting mechanism, and one end of the handle away from the pin shaft is provided with a connecting part. The application improves the convenience of opening and closing of the bolt mechanism, improves the efficiency of daily maintenance and improves the practicability.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of tunnel protection doors, in particular to an intercity railway tunnel protection door. BACKGROUND

[0002] When a vehicle runs through a tunnel, the "piston wind" that generates a large lateral wind pressure will have an adverse effect on the personnel, structure and equipment in the tunnel. In addition, with the large-scale construction of high-speed rail, more and more long and large railway tunnels are built, and the design of fire prevention and rescue in the tunnel is increasingly prominent. As the first disaster prevention barrier of the personnel evacuation channel, the protection door plays a significant role.

[0003] The door lock structure of the tunnel protection door is the main structure to ensure the stability of the protection door when it is closed. A tunnel door with the patent announcement number CN206190324U uses two sets of bolt mechanisms to lock the door body. The bolt mechanism includes a handle, a bolt tongue, a pin shaft, a first branch rod and a connecting rod. The handle is rotated to control the rotation of the bolt tongue to achieve the purpose of locking the door body. However, the bolt mechanism is prone to rust due to the long-term humid environment of the tunnel protection door. In addition, the tunnel protection door itself is relatively heavy, and the bolt mechanism is also prone to deformation. When the tunnel protection door is overhauled, the staff can only rely on their own hand strength to open and close the rusted or deformed bolt mechanism, which makes it very difficult to open and close the bolt mechanism, affecting the efficiency of overhauling the tunnel protection door. SUMMARY

[0004] The technical problem to be solved by the present application is how to reduce the difficulty of opening and closing the bolt mechanism when the tunnel protection door is overhauled.

[0005] The present application provides an intercity railway tunnel protection door, which comprises a door body and a door frame. The door body is installed on the door frame through a hinge. Both sides of the front and rear ends of the door body are provided with a bolt mechanism. The bolt mechanism comprises a handle, two bolt tongues, two branch rods and a connecting rod. The handle is installed on the door body through a pin shaft and can rotate around the pin shaft. The two bolt tongues are installed on the upper and lower ends of the same side of the door body through pin shafts, respectively. The two branch rods are fixedly connected with the two bolt tongues, respectively, and are parallel to each other. The two ends of the connecting rod are hingedly connected with the two branch rods, respectively. The handle is hingedly connected with the connecting rod. The rear end of the door frame is provided with four positioning pin sleeves matched with the bolt tongues. Two positioning grooves matched with the bolt tongues are formed in the inner walls of the two sides of the door frame. The door body further comprises an auxiliary downward pressing mechanism capable of driving the handles of the two bolt mechanisms to synchronously rotate downward through the feet and an auxiliary upward pressing mechanism capable of driving the handles of the two bolt mechanisms to synchronously rotate upward through the shoulders. The end of the handle away from the pin shaft is provided with a connecting part. The auxiliary downward pressing mechanism and the auxiliary upward pressing mechanism can be detachably connected to the connecting part.

[0006] In some embodiments, the connecting part comprises a first rotating column and a first limiting end cover, the first rotating column is vertically connected to the outer wall of the handle, and the first limiting end cover is connected to the end of the first rotating column away from the handle.

[0007] In some embodiments, the connecting part comprises a rotating block, a second rotating column and a second limiting end cover, the rotating block is provided with a first rotating shaft and a second rotating shaft with a semicircular cross section at the upper end and the lower end respectively, the first rotating shaft and the second rotating shaft are coaxial, the handle is provided with an insertion slot for inserting the rotating block, the slot bottom and the slot top of the insertion slot are respectively provided with a first rotating slot matched with the first rotating shaft and a second rotating slot matched with the second rotating shaft and having a three-quarter circular cross section, the second rotating column is arranged on the outer wall of the rotating block, and the second limiting end cover is arranged on the end of the second rotating column away from the rotating block.

[0008] In some embodiments, the auxiliary downward pressing mechanism comprises two hanging rods and a bottom plate, the top end of the hanging rod is provided with a hook matched with the first rotating column or the second rotating column, the bottom end of the hanging rod is provided with a missing slot, the missing slot is provided with a third rotating column, and the two ends of the bottom plate are provided with overlapping blocks, the bottom of the overlapping block is provided with an inner recess matched with the third rotating column.

[0009] In some embodiments, the auxiliary upward lifting mechanism comprises two connecting sleeve hooks and a lifting rod, the end of the connecting sleeve hook is provided with a first U-shaped clamping block arranged in an inverted manner, and the two ends of the lifting rod are provided with second U-shaped clamping blocks matched with the first U-shaped clamping block.

[0010] In some embodiments, the steel keel of the door body is filled with fireproof material.

[0011] The beneficial effects of the present application are:

[0012] Firstly, the connecting part is added to the handle of the intercity railway tunnel protective door, the auxiliary downward pressing mechanism is detachably connected to the connecting parts of the two handles, the staff can step on the auxiliary downward pressing mechanism with the foot power to make the two handles rotate downward synchronously, that is, to open the two bolt mechanisms, the auxiliary upward lifting mechanism is detachably connected to the connecting parts of the two handles, the staff can lift the auxiliary upward lifting mechanism with the shoulder to make the two handles rotate upward synchronously, that is, to close the two bolt mechanisms. The present application improves the convenience of opening and closing the bolt mechanism, improves the efficiency of daily maintenance, and improves the practicability.

[0013] Secondly, the steel keel of the door body of the intercity railway tunnel protective door is filled with fireproof material, which improves the overall fireproof performance of the door body. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the present application, the drawings required to be used in the present application will be briefly introduced as follows. Obviously, the drawings described in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without any creative effort.

[0015] Figure 1 The rear view of the intercity railway tunnel protective door of the present application;

[0016] Figure 2 The front view of the intercity railway tunnel protective door of the present application;

[0017] Figure 3 The cross-sectional view of Figure 2

[0018] Figure 4 The vertical cross-sectional view of the door body;

[0019] Figure 5 The structural schematic view of the first embodiment of the connecting part and the latch mechanism;

[0020] Figure 6 The structural schematic view of the auxiliary downward pressing mechanism;

[0021] Figure 7 The structural schematic view of the auxiliary upward lifting mechanism;

[0022] Figure 8 The structural schematic view of the second embodiment of the connecting part.

[0023] Reference signs: 1, door body; 11, steel keel; 12, fireproof material; 2, door frame; 21, positioning pin sleeve; 22, positioning groove; 3, latch mechanism; 31, handle; 311, insertion slot; 312, second rotating groove; 32, pin tongue; 33, supporting rod; 34, connecting rod; 21, positioning pin sleeve; 4, auxiliary downward pressing mechanism; 41, hanging rod; 411, missing slot; 412, third rotating column; 42, bottom plate; 421, lapping block; 422, inner recess; 43, hook; 5, auxiliary upward lifting mechanism; 51, connecting sleeve hook; 511, first U-shaped clamping block; 52, lifting rod; 521, second U-shaped clamping block; 6, first rotating column; 7, first limiting end cover; 8, rotating block; 81, second rotating shaft; 9, second rotating column; 10, second limiting end cover. DETAILED DESCRIPTION

[0024] The technical solutions of the present application will be described in detail below with reference to the drawings. Obviously, the described embodiments are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without any creative effort.

[0025] In the present embodiment, as Figure 1 Figure 8 ​The utility model provides an intercity railway tunnel protective door, including door body 1 and door frame 2, door body 1 is installed on door frame 2 through hinge, and both sides of the front and rear end of door body 1 are equipped with latch mechanism 3, latch mechanism 3 includes handle 31, two bolt lugs 32, two support rods 33 and connecting rod 34, handle 31 is installed on door body 1 through pin shaft and can rotate around pin shaft, two bolt lugs 32 are installed on the upper and lower ends of the same side of door body 1 respectively through pin shaft, two support rods 33 are fixedly connected with two bolt lugs 32 respectively, and two support rods 33 are parallel with each other, and the both ends of connecting rod 34 are hingedly connected with two support rods 33 respectively, handle 31 is hingedly connected on connecting rod 34, the rear end of door frame 2 is equipped with four positioning pin sleeves 21 matched with bolt lug 32, and two positioning grooves 22 matched with bolt lug 32 are formed on the inner wall of both sides of door frame 2, and the utility model further includes auxiliary down-pressing mechanism 4 that can drive the synchronous downward rotation of the handle 31 of two latch mechanisms 3 through foot part and auxiliary up-lifting mechanism 5 that can drive the synchronous upward rotation of the handle 31 of two latch mechanisms 3 through shoulder part, and the end of handle 31 away from pin shaft is equipped with connecting part, and auxiliary down-pressing mechanism 4 and auxiliary up-lifting mechanism 5 can be detachably connected on connecting part.

[0026] Four positioning pin sleeves 21 and four positioning grooves 22 are added, and bolt lug 32 can directly enter into positioning pin sleeve 21 or positioning groove 22 after rotating, so that door body 1 can be locked.

[0027] Auxiliary down-pressing mechanism 4 and auxiliary up-lifting mechanism 5 can be detachably connected on connecting part.

[0028] The first embodiment of connecting part, connecting part includes first rotating column 6 and first limiting end cover 7, and first rotating column 6 is vertically connected on the outer wall of handle 31, and first limiting end cover 7 is connected on the end of first rotating column 6 away from handle 31, and first rotating column 6 is as connecting point.

[0029] The second embodiment of the connecting part comprises a rotating block 8, a second rotating column 9 and a second limiting end cover 10. The rotating block 8 is provided with a first rotating shaft and a second rotating shaft 81 with a semicircular cross section at its upper and lower ends respectively. The first rotating shaft and the second rotating shaft 81 are coaxial. The end of the handle 31 is provided with a slot 311 into which the rotating block 8 is inserted. The slot bottom and the slot top of the slot 311 are respectively provided with a first rotating groove for rotating cooperation with the first rotating shaft and a second rotating groove 312 with a three-quarter circular cross section for rotating cooperation with the second rotating shaft 81. The second rotating column 9 is arranged on the outer wall of the rotating block 8. The second limiting end cover 10 is arranged on the end of the second rotating column 9 away from the rotating block 8. The second rotating column 9 serves as a connecting point. The placement position of the second rotating column 9 can be manually adjusted. When the second rotating column 9 needs to be used, the second rotating column 9 is directly bent and rotated. The first rotating shaft and the second rotating shaft 81 rotate in the first rotating groove and the second rotating groove 312 respectively. The second rotating shaft 81 with a semicircular cross section cooperates with the second rotating groove 312 with a three-quarter circular cross section to limit the rotation angle of the second rotating column 9, i.e. the rotation range of the second rotating shaft 81 is within 90°. The second rotating column 9 will not cause additional obstruction when not in use.

[0030] The auxiliary downward pressing mechanism 4 can enable the staff to use the foot power to assist in opening the latch structure. The auxiliary downward pressing mechanism 4 comprises two hanging rods 41 and a bottom plate 42. The top end of the hanging rod 41 is provided with a hook 43 for rotating cooperation with the first rotating column 6 or the second rotating column 9. The bottom end of the hanging rod 41 is provided with a missing slot 411. The missing slot 411 is provided with a third rotating column 412. The two ends of the bottom plate 42 are provided with overlapping blocks 421. The bottom of the overlapping block 421 is provided with an inner recess 422 for rotating cooperation with the third rotating column 412.

[0031] Working principle of the auxiliary downward pressing mechanism 4:

[0032] The hook 43 is hung on the first rotating column 6 or the second rotating column 9. After the two hanging rods 41 are hung on the corresponding first rotating column 6 or second rotating column 9, the bottom plate 42 is connected to the third rotating column 412 through the inner recess 422 of the overlapping block 421. Then one foot of the staff is stepped on the bottom plate 42. The weight of the staff is used to drive the bottom plate 42 to move downward. The bottom plate 42 drives the two hanging rods 41 to move downward synchronously. The two hooks 43 rotate on the corresponding first rotating column 6 or second rotating column 9. Then the two handles 31 rotate downward synchronously. The included angle between the hanging rod 41 and the bottom plate 42 gradually decreases. Then the four latch tongues 32 can gradually enter into the corresponding positioning pin sleeve 21. In this way, two latch mechanisms 3 can be opened at one time, which improves the convenience of the latch mechanism 3.

[0033] As a preferred, the hanging rod 41 can also be replaced by a rope, which is convenient to carry.

[0034] The auxiliary up mechanism 5 can enable the staff to use the shoulder to close the bolt structure, the auxiliary up mechanism 5 comprises two connecting sleeve hooks 51 and a lifting rod 52, the end of the connecting sleeve hook 51 is provided with a first U-shaped clamping block 511 arranged in an inverted manner, and the two ends of the lifting rod 52 are both provided with a second U-shaped clamping block 521 which is clamped and matched with the first U-shaped clamping block 511.

[0035] The working principle of the auxiliary up mechanism 5 is as follows: Figure 5 As shown in the figure, the two connecting sleeve hooks 51 are connected to the first rotating column 6 or the second rotating column 9 of the two handles 31 respectively, then the second U-shaped clamping blocks 521 at the two ends of the lifting rod 52 are clamped on the two first U-shaped clamping blocks 511 respectively, then the staff squats half, the shoulder is pressed on the lifting rod 52, then the whole body force is used to push the lifting rod 52 upwards, the lifting rod 52 transmits the force to the two handles 31, the two handles 31 can be synchronously rotated upwards, when the handle 31 is rotated upwards, the first rotating column 6 or the second rotating column 9 can slide on the connecting sleeve hook 51, so as not to affect the rotation of the two handles 31.

[0036] Further, the steel joist 11 of the door body 1 is filled with the fireproof material 12, the existing tunnel protective door is that the steel joist 11 is externally wrapped with a plate material, filling the fireproof material 12 into the steel joist 11 of the door body 1 can enhance the overall fireproof performance.

[0037] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. An intercity railway tunnel protective door, comprising a door body (1) and a door frame (2), the door body (1) is installed on the door frame (2) through a hinge, characterized in that, The door body (1) is provided with a latch mechanism (3) on both sides of the front and rear ends, the latch mechanism (3) comprises a handle (31), two latch tongues (32), two supporting rods (33) and a connecting rod (34), the handle (31) is installed on the door body (1) through a pin shaft and can rotate around the pin shaft, the two latch tongues (32) are respectively installed on the upper and lower ends of the same side of the door body (1) through pin shafts, the two supporting rods (33) are respectively fixedly connected with the two latch tongues (32), and the two supporting rods (33) are parallel to each other, the two ends of the connecting rod (34) are respectively hinged to the two supporting rods (33), the handle (31) is hinged to the connecting rod (34), the rear end of the door frame (2) is provided with four positioning pin sleeves (21) matched with the latch tongues (32), two positioning grooves (22) matched with the latch tongues (32) are formed in the inner walls of the two sides of the door frame (2), and the auxiliary downward pressing mechanism (4) capable of driving the handles (31) of the two latch mechanisms (3) to synchronously rotate downward through the feet and the auxiliary upward lifting mechanism (5) capable of driving the handles (31) of the two latch mechanisms (3) to synchronously rotate upward through the shoulders are further included, one end of the handle (31) away from the pin shaft is provided with a connecting portion, and the auxiliary downward pressing mechanism (4) and the auxiliary upward lifting mechanism (5) can be detachably connected to the connecting portion. The auxiliary downward pressing mechanism (4) comprises two hanging rods (41) and a bottom plate (42), the top end of the hanging rod (41) is provided with a hook (43) rotationally matched with the first rotating column (6) or the second rotating column (9), the bottom end of the hanging rod (41) is provided with a missing slot (411), the missing slot (411) is provided with a third rotating column (412) therein, and the two ends of the bottom plate (42) are provided with overlapping blocks (421), and the bottom of the overlapping block (421) is provided with an inner recess (422) rotationally matched with the third rotating column (412). The auxiliary upward lifting mechanism (5) comprises two connecting sleeve hooks (51) and a lifting rod (52), the end of the connecting sleeve hook (51) is provided with a first U-shaped clamping block (511) arranged in an inverted manner, and the two ends of the lifting rod (52) are provided with second U-shaped clamping blocks (521) clampingly matched with the first U-shaped clamping blocks (511).

2. The intercity railway tunnel door according to claim 1, characterized in that: The connecting portion comprises a first rotating column (6) and a first limiting end cover (7), the first rotating column (6) is vertically connected to the outer wall of the handle (31), and the first limiting end cover (7) is connected to one end of the first rotating column (6) away from the handle (31).

3. The intercity railway tunnel door according to claim 1, characterized in that: The connecting part comprises a rotating block (8), a second rotating column (9) and a second limiting end cover (10), the rotating block (8) is respectively provided with a first rotating shaft and a second rotating shaft (81) with a semicircular cross section at the upper and lower ends, the first rotating shaft and the second rotating shaft (81) are coaxial, the end of the handle (31) is provided with a slot (311) for inserting the rotating block (8), the slot bottom and the slot top of the slot (311) are respectively provided with a first rotating groove matched with the first rotating shaft and a second rotating groove (312) matched with the second rotating shaft (81) and having a three-quarter circular cross section, the second rotating column (9) is arranged on the outer wall of the rotating block (8), and the second limiting end cover (10) is arranged on the end of the second rotating column (9) away from the rotating block (8).

4. The intercity railway tunnel door according to claim 1, characterized in that: The steel keel (11) of the door body (1) is filled with fireproof material (12).

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