High speed rail skirt lock

Abstract

The present invention relates to a high-speed rail skirt lock, which is designed to solve the technical problems that the existing similar door locks lack further locking through the meshing mode of tooth rings, and the anti-vibration and vibration resistance effects are poor. The base of the skirt lock is provided with a lock core, the threaded section of the lock core extends out of the base and is connected to the square nut, and the outer diameter between the square head of the lock core and the threaded section is provided with a raised ring rib; the key points are that a spring is provided between the base in the base and the ring rib of the lock core, a lock shell is provided between the base opening in the base and the ring rib of the lock core, the lock shell is sleeved on the outer diameter of the lock core, and the two ends of the pin of the lock core are located in the lock holes symmetrically arranged on both sides of the lock shell; in the initial state, the inner tooth ring of the base is meshed with the outer tooth ring of the lock shell, the special key presses down the lock shell, the outer tooth ring of the lock shell is disengaged from the inner tooth ring of the base, and the pin leaves the locked position of the lock hole on the lock shell to the open position; then, the square key is replaced and inserted into the square head of the lock core in the lock shell, the lock shell extends out of the base, and the square key can rotate the lock core to disengage from the square nut.

Description

Technical Field

[0001] The invention relates to a locomotive door lock, in particular to a high-speed railway skirt plate lock. Background Art

[0002] Existing locomotive door locks are mainly used for metal door panels such as trains. Such metal door panels are also called skirt panels. The base of these locks is generally provided with a triangular keyhole, and the lock core is connected to the lock tongue. The lock core is turned by the triangular key to open and close the door panel. It has the characteristics of simple structure, convenient installation and use, and low production cost, and is widely used in various locomotives. Other locomotive door locks are installed on door panels or door frames, and are connected to the door panels (or door frames) through the threads of the lock core. The lock core is turned to separate or connect the door panels and the door frames. The connection method of the lock core with the door panels through the threads of the lock core achieves the effects of anti-loosening, anti-vibration, safety, and stability. It also has the characteristics of simple structure, convenient installation and use, and low production cost, and is also widely used in various locomotives. However, the lock cores in the above two locomotive door lock structures are poor in anti-loosening, anti-vibration, safety, and stability. The lock core is easily rotated due to the vibration of the lock core, causing the lock core or the lock tongue to separate from the door panel, especially when used in vibrating mechanical equipment with large vibration such as motor vehicles and high-speed trains. For this purpose, as disclosed in the Chinese patent document, application number 201180002561.X, application publication date 2013.09.18, invention name "anti-loosening safety lock"; the anti-loosening safety lock includes a nut, a light elastic washer, a base, and a lock core. The core thread section end of the lock core is inserted into and passed through the base, and is fixed and stopped in the base by the convex rib of the lock core; the spring ends of the spring and the button rod are inserted into the core hole of the lock core in sequence, and the rod key end of the button rod is exposed in the core hole; one end of the ball in the core hole is against the inner surface of the base, and the other end is against the shallow groove section or deep groove section of the button rod; the two ends of the ball are arc-shaped, and the inner diameter of the base where the ball and the base are against each other is provided with an arc groove. Under severe vibration, the lock core of the anti-loosening safety lock will not rotate or loosen. Although the above-mentioned safety lock is provided with a safety unlocking structure, i.e., a safety structure design, it is still easy for people to open it, and the anti-vibration and vibration resistance effects are poor. Moreover, the base, lock core, and anti-opening structure are difficult to be located in the same plane, and the gear ring meshing method is not used to prevent opening. Summary of the invention

[0003] In order to overcome the above shortcomings, the purpose of the present invention is to provide a new type of high-speed railway skirt lock to the art, so as to solve the technical problems of the existing similar door locks lacking further locking through the gear ring meshing mode and poor anti-vibration and vibration resistance effects. The purpose is achieved through the following technical solutions.

[0004] A high-speed railway skirt lock, wherein a lock core is arranged in the base of the skirt lock, one end of the base opening of the lock core is a square head, the other end of the lock core is a threaded section, the threaded section of the lock core extends out of the base and is connected with a square nut, a locking washer and a nut are arranged on the outer diameter of the base, the nut is provided with a set screw, a raised ring rib is arranged on the outer diameter between the square head and the threaded section of the lock core, and the lock core is limited in the base by the ring rib; it is characterized in that a spring is arranged between the base in the base and the ring rib of the lock core, and the base opening in the base and the lock core are connected A lock shell is arranged between the ring ribs of the core, and the lock shell is sleeved on the outer diameter of the lock core. A pin is arranged between the ring ribs of the lock core and the square head, and the pin passes through the lock core. The two ends of the pin are located at the lock holes symmetrically arranged on both sides of the lock shell. An inner tooth ring is arranged at the inner diameter of the base opening of the base, and an outer tooth ring is arranged at the outer diameter of the shell opening on the base opening side of the lock shell. When the pin is located at the locked position of the lock hole on the lock shell, the inner tooth ring of the base is meshed with the outer tooth ring of the lock shell. When the pin is located at the open position of the lock hole on the lock shell, the inner tooth ring of the base is disengaged from the outer tooth ring of the lock shell. Therefore, when the lock shell is rotated to the open position by a special key, the inner tooth ring of the base is disengaged from the outer tooth ring of the lock shell. Only after the inner tooth ring of the base is disengaged from the outer tooth ring of the lock shell, the lock core can be driven to rotate by the square key. When the inner tooth ring of the base is meshed with the outer tooth ring of the lock shell, the lock core cannot rotate, and the pin of the lock core is limited to the locked position of the lock hole on the lock shell.

[0005] The edge of the shell opening of the lock shell is provided with symmetrically arranged rotation grooves, the lock hole of the lock shell is in the shape of a [, the locked position and the open position of the lock shell are respectively located at the two ends of the lock hole, the locked position and the open position of the lock hole are simultaneously facing the inside of the base, and the locked position length of the lock hole is shorter than the open position length of the lock hole. The above is a specific structural form of the lock hole in the lock shell, and it can also adopt a structural form to meet the requirements that the lock core cannot rotate when the pin is in the locked position of the lock hole, and the outer gear ring of the lock shell is disengaged from the inner gear ring of the base when the pin is in the open position of the lock hole.

[0006] The square head of the lock core is provided with a wire groove, and when the pin is located in the locked position of the lock hole on the lock shell, the rotation groove of the lock shell and the wire groove of the lock core are located in the same straight line. The above structure facilitates further identification of the working state of the skirt lock, whether it is open or locked.

[0007] The outer diameter of the inner shell opening of the base of the lock shell is provided with a ring groove, and the wire retaining ring is arranged in the ring groove of the lock shell, and the diameter of the wire retaining ring is larger than the inner diameter of the base opening of the base. The above structure makes it impossible to pull out the base when the lock shell is opened and extended out of the base.

[0008] The square nut is fixedly arranged on one side of the skirt plate, and the base is fixedly arranged on the other side of the skirt plate through a locking washer and a nut. The special key presses down the lock shell, and the outer tooth ring of the lock shell is disengaged from the inner tooth ring of the base. The pin leaves the locked position of the lock hole on the lock shell. The special key drives the lock shell to rotate, and the open position of the lock hole moves to the pin. The special key is released, and the outer tooth ring of the lock shell extends out of the base opening of the base. Then, the square key is inserted into the square head of the lock core in the lock shell, and the square key can rotate the lock core to disengage the square nut. According to the above method, when the lock core is connected to the square nut, the lock core and the square nut are first connected and fixed according to the above method, and then the lock shell is rotated. The lock shell is rotated until the pin is located at the locking hole of the lock hole, and the outer tooth ring of the lock shell can be engaged with the inner tooth ring of the base.

[0009] The invention has reasonable structural design, is easy to produce, install and use, has good safety and stability, and has good vibration-proof effect; it is suitable for use as a skirt lock and door lock of locomotives and high-speed railways, and is suitable for structural improvement of similar products. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the explosion structure of the present invention.

[0011] Figure 2 It is a main structural schematic diagram of the present invention.

[0012] Figure 3 yes Figure 2 Schematic diagram of the right view structure.

[0013] Figure 4 yes Figure 2 Schematic diagram of the left view structure.

[0014] Figure 5 It is a schematic diagram of the internal structure of the locked state of the present invention.

[0015] Figure 6 This is a schematic diagram of the internal structure of the present invention in the open state Figure 1 , the lock cylinder is pressed down and moved in the figure.

[0016] Figure 7 This is a schematic diagram of the internal structure of the present invention in the open state Figure 2 , the lock housing is rotated to the open position in the figure.

[0017] Figure 8 This is a schematic diagram of the internal structure of the present invention in the open state Figure 3 , in which the lock housing extends out of the base.

[0018] Serial numbers and names of the accompanying drawings: 1. Lock housing, 101. External gear ring, 102. Lock hole, 103. Rotation groove, 2. Lock core, 3. Pin, 4. Wire retaining ring, 5. Spring, 6. Base, 601. Internal gear ring, 7. Anti-loosening washer, 8. Nut, 9. Set screw, 10. Square nut. DETAILED DESCRIPTION

[0019] Now, the structure and use of the present invention will be further described in conjunction with the accompanying drawings. Figure 1-Figure 8 As shown, the base 6 of the skirt lock is provided with a lock core 2, one end of the base opening of the lock core is a square head, the square head is provided with a wire groove, the other end of the lock core is a threaded section, the threaded section of the lock core extends out of the base and is connected to the square nut 10, the outer diameter of the base is provided with a locking washer 7 and a nut 8, the nut is provided with a set screw 9, and the outer diameter between the square head and the threaded section of the lock core is provided with a raised ring rib, and the lock core is limited in the base through the ring rib. Its specific structure is as follows: a spring 5 is provided between the base in the base and the ring rib of the lock core, a lock shell 1 is provided between the base opening in the base and the ring rib of the lock core, the lock shell is sleeved on the outer diameter of the lock core, a pin 3 is provided between the ring rib of the lock core and the square head, the pin passes through the lock core, and the two ends of the pin are located at the lock holes 102 symmetrically arranged on both sides of the lock shell. The inner diameter of the base opening of the base is provided with an inner gear ring 601, and the outer diameter of the base opening side shell opening of the lock shell is provided with an outer gear ring 101. The edge of the shell opening of the lock shell is provided with symmetrically arranged rotation grooves 103, and the lock hole of the lock shell is in the shape of a [. The locked position and the open position of the lock shell are respectively located at the two ends of the lock hole, and the locked position and the open position of the lock hole are simultaneously facing the inside of the base, and the length of the locked position of the lock hole is less than the length of the open position of the lock hole. The outer diameter of the inner shell opening of the base of the lock shell is provided with a ring groove, and the wire retaining ring 4 is arranged in the ring groove of the lock shell. The diameter of the wire retaining ring is larger than the inner diameter of the base opening of the base 6, and the wire retaining ring is limited in the base. In the initial state, the inner tooth ring of the base is meshed with the outer tooth ring of the lock shell, the pin is located in the locked position of the lock hole on the lock shell, and the rotation groove of the lock shell and the wire groove of the lock core are located in the same straight line; the lock shell is pressed to disengage the outer tooth ring of the lock shell from the inner tooth ring of the base, and drives the lock shell to rotate, and the position of the lock hole of the lock shell changes.

[0020] Its principle and characteristics are as follows: the lock core 2 is provided with a pin 3, and the pin of the lock core is connected to the lock shell 1, and the outer tooth ring 101 of the lock shell is meshed with the inner tooth ring 601 of the base 6; in the normal state, the lock core and the lock shell are connected as one, the pin is located in the locked position of the lock shell, and the base is in a fixed state. When it is necessary to unlock, use a special key to press down the lock shell 1 and turn it counterclockwise for a certain angle; the lock shell pops out of the base under the action of the spring 5, and the outer tooth ring of the lock shell and the inner tooth ring of the base are disengaged from each other; at this time, insert the square key to turn the lock core 2. In the locked state, use the square key to lock the lock core 2; then use the special key to press down the lock shell 1 and turn it clockwise to make the lock shell rebound to the same plane as the base 6 to complete the locking operation.

[0021] like Figure 5-Figure 8As shown, the lock core is locked, the outer tooth ring of the lock housing meshes with the inner tooth ring of the base, and the lock core cannot rotate. Use a special key to press down the lock housing to disengage the teeth of the outer tooth ring of the lock housing and the inner tooth ring of the base. Turn the lock housing 45 degrees counterclockwise. The lock housing pops out of the base under the action of the spring, and the outer tooth ring of the lock housing and the inner tooth ring of the base are separated from each other; at this time, use the square key to rotate the lock core. That is, in the locked state, the lock shell and the base match and cannot be selected, the pin and the lock core are integrated and cannot be rotated counterclockwise (loosened); after the lock shell rotates and the outer gear ring is pressed in, the outer gear ring of the lock shell disengages from the inner gear ring of the base, and the lock core can rotate; the outer gear ring of the lock shell pops out of the base, and the outer gear ring of the lock shell does not match the inner gear ring of the base. At this time, use the square key to withdraw the lock core; at this time, the lock core rotates, which is the initial state of closing the door or the state of tightening into place; then the outer gear ring of the lock shell is pressed into the base, and the outer gear ring of the lock shell does not match the inner gear ring of the base, and the lock shell can rotate; the lock shell rotates to the position and pops out, and the lock shell rotates to the position, and the outer gear ring of the lock shell matches the inner gear ring of the base.

Claims

1. A high-speed railway skirt lock, wherein a base (6) of the skirt lock is provided with a lock core (2), one end of the base opening of the lock core is a square head, the other end of the lock core is a threaded section, the threaded section of the lock core extends out of the base and is connected to a square nut (10), the outer diameter of the base is provided with a locking washer (7) and a nut (8), the nut is provided with a set screw (9), a raised rib is provided on the outer diameter between the square head and the threaded section of the lock core, and the lock core is limited in the base by the rib; characterized in that A spring (5) is provided between the base and the ring rib of the lock core (2) in the base (6), a lock shell (1) is provided between the base opening in the base and the ring rib of the lock core, the lock shell is sleeved on the outer diameter of the lock core, a pin (3) is provided between the ring rib of the lock core and the square head, the pin passes through the lock core, and the two ends of the pin are located at the lock holes (102) symmetrically arranged on both sides of the lock shell; an inner tooth ring (601) is provided at the inner diameter of the base opening of the base, and an outer tooth ring (101) is provided at the outer diameter of the shell opening on the base opening side of the lock shell; when the pin is located in the locked position of the lock hole on the lock shell, the inner tooth ring of the base is meshed with the outer tooth ring of the lock shell; when the pin is located in the open position of the lock hole on the lock shell, the inner tooth ring of the base is disengaged from the outer tooth ring of the lock shell.

2. The high-speed railway skirt lock according to claim 1 is characterized in that The edge of the shell opening of the lock shell (1) is provided with symmetrically arranged rotation grooves (103), the lock hole of the lock shell is in the shape of a [, the locked position and the unlocked position of the lock shell are respectively located at the two ends of the lock hole, the locked position and the unlocked position of the lock hole are simultaneously facing the inside of the base, and the locked position length of the lock hole is shorter than the unlocked position length of the lock hole.

3. The high-speed railway skirt lock according to claim 2 is characterized in that The square head of the lock core (2) is provided with a wire groove, and when the pin (3) is located in the locking position of the lock hole (102) on the lock housing (1), the rotation groove (103) of the lock housing (1) and the wire groove of the lock core are located in the same straight line.

4. The high-speed railway skirt lock according to claim 1 is characterized in that The outer diameter of the inner shell opening of the base of the lock housing (1) is provided with a ring groove, and the wire retaining ring (4) is arranged in the ring groove of the lock housing, and the diameter of the wire retaining ring is larger than the inner diameter of the base opening of the base (6).

5. The high-speed railway skirt lock according to claim 1 is characterized in that The square nut (10) is fixedly arranged on one side of the skirt plate, and the base (6) is fixedly arranged on the other side of the skirt plate through a locking washer (7) and a nut (8). The special key presses down the lock housing (1), and the outer tooth ring (101) of the lock housing is disengaged from the inner tooth ring (601) of the base. The pin (3) leaves the locked position of the lock hole on the lock housing. The special key drives the lock housing to rotate, and the unlocked position of the lock hole moves to the pin. The special key is released, and the outer tooth ring of the lock housing extends out of the base opening of the base. Then, the square key is inserted into the square head of the lock core (2) in the lock housing, and the square key can rotate the lock core and disengage the square nut.

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