Visual tensioning lock for railway

Abstract

According to the visual tensioning lock for the railway, through the arrangement of a sliding cover and an L-shaped limiting groove in the outer side wall of the sliding cover, when the tensioning lock is in a locking state, the protruding end of a limiting column is located in a linear axial groove, and the upper end face, abutting against the sliding cover, of a first spring is flush with the upper end face of a lock shell; when a tension lock is in an unlocking state, the protruding end of a limiting column is located in a semi-annular circumferential groove, a sliding cover downwards compresses a first spring and keeps being sunken in an assembly hole of a lock shell, and therefore the lock is locked. Therefore, a worker can conveniently observe that the door lock is in the unlocking state at the moment in the operation and maintenance management process, the worker can conveniently and rapidly check whether the door lock is completely closed or not in the operation and maintenance management process, and the working efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of locks, in particular to a visual tension lock for railway. BACKGROUND

[0002] Nowadays, railway transportation is also a major transportation mode. Due to the development of high-speed rail, the construction of railway has become more extensive. Railway special lock is used in the process of transportation work. Railway special lock usually uses a turn tongue lock. The turn tongue lock is a lock that controls the rotation of the lock pin through the internal structure. According to the different structures of the lock pin, it is divided into plum blossom pin tumbler lock, triangular turn tongue lock, double-sided pin tumbler turn tongue lock, etc. The working principle of the turn tongue lock is that the key is rotated to drive the lock core and the lock shaft to rotate, and then the lock tongue is rotated to realize the opening and closing of the door lock. Especially on the subway, high-speed rail and train, the staff needs to check whether the door lock is closed perfectly one by one. However, the existing tension lock structure does not change in the locked and unlocked state, which makes it inconvenient for the staff to check whether the door lock is closed perfectly during operation and management, and reduces the work efficiency. CONTENT OF THE INVENTION

[0003] In view of the deficiencies in the prior art, the purpose of the present application is to provide a visual tension lock for railway to solve the problems raised in the background art.

[0004] According to an aspect of the present application, a visualized railway tension lock comprises a lock shell, a lock core, a sliding cover, a lock shaft and a lock tongue. The lock shell is internally provided with an assembly hole. The lock core is mounted in the assembly hole. The lock core comprises a cylindrical shaft part rotatably arranged in the assembly hole of the lock shell. The upper end of the cylindrical shaft part is fixedly provided with a convex core part. The outer side of the convex core part is slidably sleeved with a sliding cover. The sliding cover is slidably arranged in the assembly hole inside the lock shell. The middle part of the convex core part is provided with an axially arranged sliding groove hole. The first pin shaft is radially inserted through the side wall of the sliding cover and slidably arranged in the sliding groove hole. The first spring is sleeved on the outer circumferential side of the convex core part. The upper and lower ends of the first spring are respectively abutted against the bottom of the sliding cover and the top of the cylindrical shaft part. The L-shaped limiting groove is formed on the outer side wall of the sliding cover. The vertical part of the L-shaped limiting groove is a linear axial groove arranged along the axial direction of the outer side wall of the sliding cover. The horizontal part of the L-shaped limiting groove is a semi-annular circumferential groove arranged along the circumferential direction of the outer side wall of the sliding cover. The limiting column is fixedly mounted on the side wall of the lock shell. The protruding end of the limiting column extends inwardly and is arranged in the L-shaped limiting groove. In the locked state of the tension lock, the protruding end of the limiting column is located in the linear axial groove. The upper end of the sliding cover is abutted against the upper end of the lock shell by the abutment of the first spring. In the unlocked state of the tension lock, the protruding end of the limiting column is located in the semi-annular circumferential groove. The sliding cover compresses the first spring downwardly and is recessed in the assembly hole of the lock shell. The lock shaft is movably mounted in the inside of the cylindrical shaft part. The lock tongue is fixedly mounted on the lock shaft.

[0005] Preferably, a pair of symmetrical spiral groove holes are formed on the cylindrical wall of the cylindrical shaft part. The upper end of the lock shaft is inserted into the cylindrical shaft part. The second pin shaft is radially inserted into the upper part of the side wall of the lock shaft. The two ends of the second pin shaft are respectively arranged in the spiral groove holes. The L-shaped sliding groove is formed on the inner wall of the assembly hole. The L-shaped sliding groove is composed of an axial sliding groove and a circumferential sliding groove. The circumferential sliding groove is arranged on the side wall of the assembly hole in the circumferential direction. The axial sliding groove is arranged on the side wall of the assembly hole in the axial direction. The axial sliding groove is located above the circumferential sliding groove. The two ends of the second pin shaft can slide in the L-shaped sliding groove. In the locked state of the tension lock, the two ends of the second pin shaft are located at the upper end of the spiral groove hole and slide in the axial sliding groove. In the unlocked state of the tension lock, the two ends of the second pin shaft are located at the lower end of the spiral groove hole and slide in the circumferential sliding groove.

[0006] Preferably, the second spring is arranged in the inside of the cylindrical shaft part in the axial direction. One end of the second spring acts on the inner side end face of the cylindrical shaft part. The other end of the second spring acts on the end part of the lock shaft.

[0007] Preferably, a threaded portion is arranged on the outer side wall of the shaft body outside the cylindrical shaft portion, a first nut, a lock tongue and a second nut are sequentially sleeved on the threaded portion, and the first nut and the second nut are both in threaded connection with the threaded portion, and the first nut and the second nut are opposite in rotation direction.

[0008] Preferably, an inner tooth washer is arranged between the first nut, the second nut and the lock tongue, and the inner tooth washer is also sleeved on the threaded portion.

[0009] Preferably, a sealing ring is embedded in the outer side wall of the cylindrical shaft portion to form a sealing structure between the outer side wall of the cylindrical shaft portion and the inner side wall of the assembly hole of the lock shell.

[0010] Compared with the prior art, the railway visualized tension lock has the following advantages: in the locked state of the tension lock, the protruding end of the limiting column is located in the linear axial slot, the upper end surface of the sliding cover supported by the first spring is flush with the upper end surface of the lock shell, so that the working personnel can easily observe that the door lock is in the locked state in the operation and maintenance management process; in the unlocked state of the tension lock, the protruding end of the limiting column is located in the semi-annular circumferential groove, the sliding cover is compressed downward to keep recessed in the assembly hole of the lock shell, so that the working personnel can easily observe that the door lock is in the unlocked state in the operation and maintenance management process, thereby facilitating the working personnel to quickly check whether the door lock is closed in place in the operation and maintenance management process, and improving the work efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 is a perspective exploded view of a railway visualized tension lock according to an embodiment of the present application.

[0012] Figure 2 is a perspective view of a railway visualized tension lock in a locked state according to an embodiment of the present application.

[0013] Figure 3 is a sectional view of a railway visualized tension lock in a locked state according to an embodiment of the present application.

[0014] Figure 4 is a perspective view of a railway visualized tension lock in an unlocked state according to an embodiment of the present application.

[0015] Figure 5 is a sectional view of a railway visualized tension lock in an unlocked state according to an embodiment of the present application.

[0016] Figure 6 is a structural view of a lock shell of a railway visualized tension lock according to an embodiment of the present application.

[0017] Figure 7 is an internal structure diagram of a visualized tensioning lock for railway according to an embodiment of the present application when the lock is closed.

[0018] Figure 8 is an internal structure diagram of a visualized tensioning lock for railway according to an embodiment of the present application after the slide cover is pressed.

[0019] Figure 9 is an internal structure diagram of a visualized tensioning lock for railway according to an embodiment of the present application after the lock cylinder and the slide cover are rotated by 90 degrees.

[0020] Figure 10 is an internal structure diagram of a visualized tensioning lock for railway according to an embodiment of the present application after the lock cylinder and the slide cover are rotated by 180 degrees.

[0021] Fig. 1 is a lock housing; Fig. 2 is a lock cylinder; 21 is a cylindrical shaft part; 22 is a protruding core part; Fig. 3 is a slide cover; Fig. 4 is a lock shaft; 41 is a threaded part; Fig. 5 is a lock tongue; Fig. 6 is an assembly hole; Fig. 7 is a sliding groove hole; Fig. 8 is a first pin shaft; Fig. 9 is a first spring; Fig. 10 is an L-shaped limiting groove; 101 is a linear axial groove; 102 is a semi-annular circumferential groove; Fig. 11 is a limiting column; Fig. 12 is a spiral groove hole; Fig. 13 is a second pin shaft; Fig. 14 is an L-shaped sliding groove; 141 is an axial sliding groove; 142 is a circumferential sliding groove; Fig. 15 is a second spring; Fig. 16 is a first nut; Fig. 17 is a second nut. DETAILED DESCRIPTION

[0022] In order to make the content of the present application more easily understood, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. It should be noted that the words “front”, “back”, “left”, “right”, “up” and “down” used in the following description refer to the directions in the drawings, and the words “inner” and “outer” refer to the directions towards or away from the geometric center of a specific component. In addition, the terms “first”, “second”, etc. are only for descriptive purposes and should not be understood as indicating or implying relative importance. Figure 3

[0023] As shown in Fig. 1, the visualized tensioning lock for railway according to the present application comprises a lock housing 1, a lock cylinder 2, a slide cover 3, a lock shaft 4, a lock tongue 5, an assembly hole 6, a sliding groove hole 7, a first pin shaft 8, a first spring 9, an L-shaped limiting groove 10, a linear axial groove 101, a semi-annular circumferential groove 102, a limiting column 11, a spiral groove hole 12, a second pin shaft 13, an L-shaped sliding groove 14, an axial sliding groove 141, a circumferential sliding groove 142, a second spring 15, a first nut 16 and a second nut 17. Figures 1-10 ​The utility model provides a railway visualized tension lock, including lock shell 1, lock core 2, slide cover 3, lock axle 4 and lock bolt 5, the inside of lock shell 1 is provided with assembly hole 6, lock core 2 is installed in assembly hole 6, lock core 2 includes the tubular axle part 21 rotationally arranged in the assembly hole 6 of lock shell 1, the outside wall of tubular axle part 21 is embedded with sealing ring for forming the sealed structure between the outside wall of tubular axle part 21 and the inside wall of the assembly hole 6 of lock shell 1, the upper end of tubular axle part 21 is fixed with the convex core 22, the outside of convex core 22 is slidably sleeved with slide cover 3, and slide cover 3 is slidably arranged in the assembly hole 6 inside lock shell 1, the middle part of convex core 22 is provided with the axial sliding slot 7, the side wall of slide cover 3 is provided with the first pin shaft 8 along the radial direction, and the first pin shaft 8 is slidably arranged in the sliding slot 7, the outer circumferential side of convex core 22 is sleeved with the first spring 9, and the upper and lower ends of first spring 9 are respectively in contact with the bottom of slide cover 3 and the top of tubular axle part 21, the side wall of slide cover 3 is provided with the L-shaped limiting slot 10, the vertical part of L-shaped limiting slot 10 is linear axial slot 101, and it is arranged along the axial direction of the side wall of slide cover 3, the horizontal part of L-shaped limiting slot 10 is semicircular circumferential slot 102, and it is arranged along the circumferential direction of the side wall of slide cover 3, the side wall of lock shell 1 is fixedly installed with the limiting column 11, the protruding end of limiting column 11 extends inward and is arranged in the L-shaped limiting slot 10, in the locked state of tension lock, the protruding end of limiting column 11 is located in the linear axial slot 101, and the upper end of slide cover 3 is supported by first spring 9 and is flush with the upper end of lock shell 1, in the unlocked state of tension lock, the protruding end of limiting column 11 is located in the semicircular circumferential slot 102, slide cover 3 compresses first spring 9 downward and keeps recessed in the assembly hole 6 of lock shell 1, the inside of tubular axle part 21 is movably installed with lock axle 4, the barrel wall of tubular axle part 21 is provided with a pair of symmetrical spiral slot 12, the upper end of lock axle 4 is inserted into tubular axle part 21, and the upper side wall of lock axle 4 is provided with the second pin shaft 13 along the radial direction, the two ends of second pin shaft 13 are arranged in the spiral slot 12, the inner wall of assembly hole 6 is provided with L-shaped sliding groove 14, L-shaped sliding groove 14 is composed of the two grooves in communication connection of axial sliding groove 141 and circumferential sliding groove 142, the circumferential sliding groove 142 is arranged in the circumferential direction of the side wall of assembly hole 6, the axial sliding groove 141 is arranged in the axial direction of the side wall of assembly hole 6, and the axial sliding groove 141 is located on the upper side of circumferential sliding groove 142, and the two ends of second pin shaft 13 can slide in L-shaped sliding groove 14, in the locked state of tension lock, the two ends of second pin shaft 13 are located in the upper end of spiral slot 12 and slide in axial sliding groove 141, in the unlocked state of tension lock, the two ends of second pin shaft 13 are located in the lower end of spiral slot 12 and slide in circumferential sliding groove 142, in addition, the inside of tubular axle part 21 is installed with the second spring 15 arranged in the axial direction, one end of second spring 15 acts on the inside end face of tubular axle part 21, and the other end of second spring 15 acts on the end of lock axle 4.The threaded portion 41 is provided on the outer side wall of the shaft body of the lock shaft 4, the first nut 16, the lock tongue 5 and the second nut 17 are sequentially sleeved on the threaded portion 41, the first nut 16 and the second nut 17 are both in threaded connection with the threaded portion 41, the first nut 16 and the second nut 17 are both provided with an inner tooth washer between the first nut 16 and the lock tongue 5 and between the second nut 17 and the lock tongue 5, the inner tooth washer is also sleeved on the threaded portion 41, the rotation directions of the first nut 16 and the second nut 17 are opposite, and the lock tongue 5 can be fixed on the threaded portion 41 of the lock shaft 4.

[0024] Working principle: when the lock is in the closed state, the two ends of the second pin shaft 13 are located in the upper end of the spiral groove hole 12 and slide in the axial sliding groove 141, the protruding end of the limiting column 11 is located in the linear axial groove 101 of the L-shaped limiting groove 10, and the upper end surface of the first spring 9 abutting against the sliding cover 3 is flush with the upper end surface of the lock shell 1, so that the worker can easily observe that the door lock is in the closed state during operation and management. Figure 8 When the lock is in the closed state, the two ends of the second pin shaft 13 are located in the upper end of the spiral groove hole 12 and slide in the axial sliding groove 141, the protruding end of the limiting column 11 is located in the linear axial groove 101 of the L-shaped limiting groove 10, and the upper end surface of the first spring 9 abutting against the sliding cover 3 is flush with the upper end surface of the lock shell 1, so that the worker can easily observe that the door lock is in the closed state during operation and management. Figure 9 Then, the lock core 2 and the sliding cover 3 are rotated by 90 degrees, and the cylindrical shaft portion 21 is rotated by 90 degrees by the second pin shaft 13, so that the lock is unlocked, the protruding end of the limiting column 11 is located at the end position of the semi-annular circumferential groove 102 of the L-shaped limiting groove 10, the sliding cover 3 is compressed downward by the first spring 9 and remains recessed in the assembly hole 6 of the lock shell 1, and the worker can easily observe that the door lock is in the unlocked state during operation and management, so that the worker can quickly check whether the door lock is closed during operation and management, and the work efficiency is improved.

[0025] The above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them. Although the embodiments of the present application have been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that, without departing from the spirit and scope defined by the claims of the present application, they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for some technical features.

Claims

1. A visualized tension lock for railway, comprising a lock housing (1), a lock cylinder (2), a sliding cover (3), a lock shaft (4) and a lock tongue (5), characterized in that, The lock shell (1) is internally provided with an assembly hole (6), the lock cylinder (2) is installed in the assembly hole (6), the lock cylinder (2) comprises a cylindrical shaft part (21) rotatably arranged in the assembly hole (6) of the lock shell (1), a convex core part (22) is fixedly arranged at the upper end of the cylindrical shaft part (21), a sliding cover (3) is slidably arranged outside the convex core part (22), the sliding cover (3) is slidably arranged in the assembly hole (6) inside the lock shell (1), a sliding groove hole (7) is arranged in the middle of the convex core part (22) in the axial direction, a first pin shaft (8) is radially arranged through the side wall of the sliding cover (3), and the first pin shaft (8) is arranged through and slidably arranged in the sliding groove hole (7), a first spring (9) is sleeved outside the convex core part (22), and the upper and lower ends of the first spring (9) are respectively abutted against the bottom of the sliding cover (3) and the top of the cylindrical shaft part (21), an L-shaped limiting groove (10) is arranged on the outer side wall of the sliding cover (3), the vertical part of the L-shaped limiting groove (10) is a linear axial groove (101) arranged in the axial direction of the outer side wall of the sliding cover (3), and the horizontal part of the L-shaped limiting groove (10) is a semi-annular circumferential groove (102) arranged in the circumferential direction of the outer side wall of the sliding cover (3), a limiting column (11) is fixedly arranged on the side wall of the lock shell (1), the protruding end of the limiting column (11) extends inwardly and is arranged in the L-shaped limiting groove (10), in the locked state, the protruding end of the limiting column (11) is located in the linear axial groove (101), and the upper end surface of the sliding cover (3) is flush with the upper end surface of the lock shell (1) supported by the first spring (9), in the unlocked state, the protruding end of the limiting column (11) is located in the semi-annular circumferential groove (102), the sliding cover (3) is compressed downwardly to compress the first spring (9) and is kept recessed in the assembly hole (6) of the lock shell (1), a lock shaft (4) is movably arranged in the cylindrical shaft part (21), and a lock tongue (5) is fixedly arranged on the lock shaft (4).

2. A visualized tensioning lock for a railway according to claim 1, characterized in that A pair of symmetrical spiral slot holes (12) are formed on the cylinder wall of the cylindrical shaft part (21), the upper end of the lock shaft (4) is inserted into the cylindrical shaft part (21), a second pin shaft (13) is inserted into the radial direction of the upper part of the side wall of the lock shaft (4), the two ends of the second pin shaft (13) are arranged in the spiral slot holes (12) respectively, an L-shaped sliding groove (14) is arranged on the inner wall of the assembly hole (6), the L-shaped sliding groove (14) is composed of two segments of grooves, namely an axial sliding groove (141) and a circumferential sliding groove (142), the circumferential sliding groove (142) is arranged in the circumferential direction of the side wall of the assembly hole (6), the axial sliding groove (141) is arranged in the axial direction of the side wall of the assembly hole (6), and the axial sliding groove (141) is located above the circumferential sliding groove (142), the two ends of the second pin shaft (13) can slide in the L-shaped sliding groove (14), in the locked state of the tension lock, the two ends of the second pin shaft (13) are located at the upper end of the spiral slot hole (12) and slide in the axial sliding groove (141), in the unlocked state of the tension lock, the two ends of the second pin shaft (13) are located at the lower end of the spiral slot hole (12) and slide in the circumferential sliding groove (142).

3. A visualized tensioning lock for a railway according to claim 1, characterized in that, A second spring (15) is arranged in the cylindrical shaft part (21) in the axial direction, one end of the second spring (15) acts on the inner side end face of the cylindrical shaft part (21), and the other end of the second spring (15) acts on the end of the lock shaft (4).

4. A visualized tensioning lock for a railway according to claim 1, characterized in that, A threaded part (41) is arranged on the outer side wall of the shaft body outside the cylindrical shaft part (21) of the lock shaft (4), a first nut (16), a lock tongue (5) and a second nut (17) are sequentially sleeved on the threaded part (41), the first nut (16) and the second nut (17) are both in threaded connection with the threaded part (41), and the rotation directions of the first nut (16) and the second nut (17) are opposite.

5. A visualized tensioning lock for a railway according to claim 4, characterized in that An inner tooth washer is arranged between the first nut (16), the second nut (17) and the lock tongue (5), and the inner tooth washer is also sleeved on the threaded part (41).

6. A visualized tensioning lock for a railway according to claim 1, characterized in that, A sealing ring is embedded in the outer side wall of the cylindrical shaft part (21) to form a sealing structure between the outer side wall of the cylindrical shaft part (21) and the inner side wall of the assembly hole (6) of the lock shell (1).

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