CN102808552B - Apron board lock for equipment cabin of vehicular underframe - Google Patents

Abstract

The skirt plate lock of the equipment cabin of the car body underframe according to the present invention adopts a set of rotation and positioning structures matched with a limit sleeve and a sliding sleeve to ensure that the overall skirt plate lock can realize a complete self-locking function, and under any external force Neither can make the lock tongue rotate, so as to ensure that the skirt board can be opened only when using a specially configured key, and ensure that the skirt board lock will not automatically loosen during the running of the rail vehicle. The apron lock includes a lock body mounted on the apron through a lock nut, a rotatable lock core is arranged inside the lock body, and a lock tongue snapped on the strike plate is set on the outer end of the lock core. Inside the lock body, a set of limiting sleeves and sliding sleeves are coaxially sleeved; the sliding sleeve has protrusions that are snapped into multiple sets of positioning grooves in the circumferential direction of the limiting sleeves along with the rotation of the lock cylinder.

Description

Body chassis equipment compartment skirt plate lock

technical field

The invention relates to a lock structure applied to locking the skirt plate of the equipment compartment of the underframe of the vehicle body, so as to correspondingly improve the installation, sealing and maintenance of the equipment under the vehicle, and belongs to the field of mechanical manufacturing.

Background technique

At present, rail vehicles that have been put into operation in China, such as urban light rail, passenger trains, EMUs, etc., in order to save space in the vehicle and facilitate the installation and configuration of pipelines and lines of equipment, the relevant vehicle equipment is usually arranged in a centralized manner on the vehicle. Under the body chassis, that is, the under-vehicle equipment compartment that forms a centralized structure.

The equipment cabins of the existing car body chassis are all made of aluminum profiles, and the design focus is on the sealing performance of the equipment cabin skirt. Compared with the existing high-speed rail vehicles with a speed of 350 kilometers per hour and above, there are the following disadvantages:

1. The existing equipment compartment skirt plate lock structure cannot realize self-locking, and the lock tongue must be blocked by an external stopper to prevent loosening due to vibration when the train is running at high speed;

2. The stop structure of the lock plate is relatively complicated, and there are defects such as cumbersome installation procedures and repeated adjustments. Because the skirt board must be closed during adjustment, and the locking plate cannot be seen after the skirt board is closed, so that the worker operates completely by feeling when adjusting. Different workers will operate in different states, so that after the train has been running for a period of time, the maintenance personnel will find that the skirt plate lock is loose during daily inspection.

Contents of the invention

The purpose of the vehicle body underframe equipment compartment skirt panel lock of the present invention is to solve the problems existing in the above-mentioned prior art by adopting a rotation positioning structure with a set of limit sleeves and sliding sleeves to ensure that the overall skirt panel lock can realize Completely self-locking function, and the lock bolt cannot be rotated under any external force, so as to ensure that the skirt board can only be opened when using a specially configured key, ensuring that the skirt board lock will not automatically loosen during the operation of the rail vehicle opening phenomenon.

Another object of the invention is to make the locking and unlocking of the apron lock simple and easy, save time in operation, and limit the clockwise or counterclockwise rotation of the lock tongue by 90°, thereby accurately limiting the locked or unlocked state of the apron lock and improving The connection stability of the skirt board lock is used to ensure that the skirt board lock will not be accidentally loosened due to the vibration of the car body, and to avoid vehicle safety accidents caused by the fall of the skirt board.

The purpose of the invention is also to correspondingly improve the connection sealing performance after the skirt lock is locked, prevent rainwater or snowwater from seeping into the equipment compartment, so as to effectively improve the safety protection function for the under-vehicle equipment.

In order to achieve the purpose of the above invention, the skirt plate lock of the equipment cabin of the vehicle body chassis mainly includes:

The lock body is installed on the skirt plate through the lock nut, a rotatable lock core is arranged inside the lock body, and a lock tongue snapped on the lock plate is sheathed on the outer end of the lock core. The difference with the prior art is that,

Inside the lock body, the coaxial ground sleeve is provided with a set of limit sleeves and sliding sleeves;

The sliding sleeve has protrusions that are snapped into multiple sets of positioning grooves in the circumferential direction of the limiting sleeve along with the rotation of the lock cylinder.

As in the above-mentioned basic scheme, the car body chassis of the rail vehicle is provided with an apron frame, and several apron plates are installed on the apron frame. Install confined spaces. In order to lock the skirt board, the skirt board lock according to the present invention is arranged on the striker plate.

In the said skirt board lock, the dead bolt cooperates with the striker plate to lock or open the skirt board. The lock core and the lock body are in a sliding gap fit structure, and the lock core can rotate around its axial direction on the lock body.

According to the structure of the limiting sleeve and the sliding sleeve provided by the design concept of the present invention, the sliding sleeve moves along the lock core to the inside of the lock body under the push of the key, and at the same time the sliding sleeve is positioned on the circumference of the limiting sleeve along with the rotation of the lock core. group positioning slot.

Multiple sets of positioning grooves in the circumferential direction of the limiting sleeve can define different positioning states of the lock tongue, that is, different rotation positions of the lock tongue can be defined by switching the sliding sleeve in multiple sets of positioning grooves.

Since the protrusion of the sliding sleeve and the positioning groove of the limiting sleeve can be tightly buckled, the locking and opening operations of the skirt lock can be ensured accurately, and the complete self-locking function can be realized to avoid damage caused by the vibration of the skirt. Occurrence of the automatic release of the skirt plate lock.

In order to further improve the control accuracy of the skirt lock operation state, simplify the switching between the locked and unlocked states, and ensure that the staff can accurately complete the skirt lock without seeing the lock tongue, the following improvement schemes can be adopted:

Two sets of positioning grooves are arranged on the limiting sleeve along the circumferential direction, and a pair of protrusions are arranged on the sliding sleeve. That is, the pair of protrusions on the sliding sleeve can only be positioned in two sets of positioning grooves, that is, the lock tongue can only be switched between locked and open states, otherwise the sliding sleeve and the limit sleeve inside the lock body cannot be realized. butt.

A more preferred embodiment is that the two sets of positioning grooves are arranged in a cross, and the pair of protrusions are spaced 180° apart in the circumferential direction of the sliding sleeve, that is, there are two sets of four positioning grooves on the limiting sleeve. Every two positioning grooves match with two protrusions on the sliding sleeve at the same time. Under the action of the key, a pair of projections of the sliding sleeve rotate and move out of a set of positioning grooves of the limiting sleeve. After rotating 90° around the axial direction of the lock cylinder, a pair of projections of the sliding sleeve move into the other set of positioning grooves of the limiting sleeve. Set in the positioning slot and blocked by the limit sleeve, at this time the lock tongue is accurately and stably limited to a certain state, so that the skirt board lock is in the locked or unlocked state.

In order to improve the flexibility and accuracy of the action of the buckle positioning structure between the limit sleeve and the sliding sleeve, the sliding sleeve can be tightly pressed against the spring sleeved outside the lock cylinder.

When the key is used for locking and opening operations, the sliding sleeve moves to the inside of the lock body for a certain distance under the push of the key. When the sliding sleeve is driven to rotate 90° around its axial direction, or the key is pulled out, the sliding sleeve moves to the outside of the lock body under the action of the spring, and the two protrusions of the sliding sleeve are pressed into another set of positioning grooves of the limiting sleeve until the sliding sleeve is in line with the outer surface of the lock body.

In order to improve the structural stability of the limit sleeve relative to the lock body, a limit sleeve stop is provided between the limit sleeve and the inner cavity of the lock, and the limit sleeve is fixed to the lock body through the limit sleeve stop. The lock body cannot move axially, and the limit sleeve cannot escape from the lock body.

In order to prevent the limit sleeve from rotating in the circumferential direction relative to the lock body, the outer wall of the limit sleeve is nested in the circumferential stop groove of the lock body, and the limit sleeve and the lock body realize the positioning function of tight buckle through the stop groove , when the sliding sleeve rotates along the circumferential direction of the limit sleeve, the limit sleeve does not rotate.

A more detailed improvement plan is that a self-locking nut is provided on the outer end of the lock cylinder and the outside of the lock tongue. The self-locking nut can limit the stability of the lock tongue to the end of the lock cylinder, and the self-locking nut can prevent it. During the operation of the vehicle, the phenomenon of loosening occurs due to continuous vibration, so as to ensure that the lock tongue will not fall off from the locked position.

In order to prevent the lock core from moving laterally inside the lock body, a pair of inner retaining rings and outer retaining rings can be provided on the lock core and at both inner and outer ends of the lock body through which the lock core passes.

In order to improve the sealing effect of the skirt plate lock as a whole relative to the skirt plate, a sealing ring can be arranged between the lock body and the skirt plate.

In summary, the vehicle body underframe equipment cabin skirt plate lock of the present invention has advantages and beneficial effects as follows:

1. Adopt the rotation positioning structure of the limit sleeve and the sliding sleeve, which can completely realize the self-locking function of the skirt plate lock.

2. The apron can only be opened when the specially configured key is used, and the lock tongue cannot be rotated under the action of external force, so as to ensure that the apron lock will not be automatically released during the operation of the rail vehicle.

3. The locking and opening operation of the skirt lock is simple and easy, and the staff can accurately limit the locking or opening state of the skirt lock, which improves the connection stability of the skirt lock.

4. It can effectively improve the connection tightness of the skirt plate lock after locking, prevent rainwater or snowwater from seeping into the equipment compartment, and effectively improve the safety protection function for the equipment under the vehicle.

Description of drawings

The present invention will be further described now in conjunction with accompanying drawing.

Fig. 1 is a schematic cross-sectional view of the internal structure of the apron lock;

Fig. 2 is a schematic sectional view of A-A in Fig. 1;

Fig. 3 is B-B direction sectional schematic diagram in Fig. 1;

As shown in Figure 1 and Figure 2, lock body 1, sealing ring 2, limit sleeve 3, sliding sleeve 4, lock core 5, spring 6, inner retaining ring 7, lock nut 8, lock tongue 9, self-locking nut 10. Lock cylinder sealing ring 11, limit sleeve stop 12, outer retaining ring 13, positioning groove 15, protrusion 16, lock plate 17, stop groove 18.

detailed description

Embodiment 1, as shown in Figure 1 and Figure 2, the skirt plate lock of the equipment cabin of the vehicle body chassis mainly includes:

The lock body 1 installed on the skirt plate (not shown in the figure) through the lock nut 8;

A rotatable lock core 5 is arranged inside the lock body 1, and the lock core 5 and the lock body 1 are in a sliding clearance fit structure, and the lock core 5 can rotate around its axial direction on the lock body 1;

The outer end of the lock core 5 is sheathed with a lock tongue 9 that is buckled on the lock plate 17 , and the lock tongue 9 cooperates with the lock plate 17 to lock or open the skirt.

The structural improvement made in this embodiment is that inside the lock body 1, a set of limit sleeves 3 and a sliding sleeve 4 are coaxially sleeved, and the sliding sleeve 4 is tightly pressed against the spring 6 sleeved outside the lock cylinder 5. superior.

The sliding sleeve 4 has a pair of projections 16 that snap into the two sets of positioning grooves 15 in the circumferential direction of the limiting sleeve 3 along with the rotation of the lock cylinder 5. The two sets of positioning grooves 15 are arranged in a cross, and the pair of projections 16 are spaced 180° in the sliding sleeve 4 circumferential directions.

There are 2 sets of 4 positioning grooves 15 on the limit sleeve 3, and every 2 positioning grooves 15 are matched with 2 protrusions 16 on the sliding sleeve 4 at the same time. Under the action of the key, a pair of projections 16 of the sliding sleeve 4 rotate and move out of a set of positioning grooves 15 of the limit sleeve 3. After rotating 90° around the axial direction of the lock cylinder 5, the pair of projections 16 of the sliding sleeve 4 Move into another group of positioning grooves 15 of the limit sleeve 3 and be blocked by the limit sleeve 3. At this time, the dead bolt 9 is accurately and stably limited to a certain state, so that the skirt lock is in a locked or unlocked state.

A limit sleeve stopper 12 is provided between the limit sleeve 3 and the inner cavity of the lock body 1 , and the limit sleeve 3 is fixed to the lock body 1 through the limit sleeve stopper 12 sleeved circumferentially. At the same time, part of the outer wall of the limit sleeve 3 is also nested into the stop groove 18 provided on the inner wall of the lock body 1, thereby ensuring that the limit sleeve 3 does not rotate in the circumferential direction relative to the lock body 1, and finally the limit sleeve 3 3 cannot escape from the lock body 1.

At the outer end of the lock core 5 and the outside of the dead bolt 9, a self-locking nut 10 is provided. The self-locking nut 10 has a special threaded thread structure and has a self-locking function, so as to ensure that the dead bolt 9 will not slip from the lock core 5. fall off.

On the lock core 5, the lock core 5 passes through the inner and outer ends of the lock body 1, and a pair of inner retaining rings 7 and outer retaining rings 13 are provided to prevent the lock core 5 from moving laterally inside the lock body 1.

In addition, a sealing ring 2 is also provided between the lock body 1 and the skirt plate.

The skirt plate lock of the equipment compartment of the vehicle body chassis can be made of stainless steel, which has good appearance and corrosion resistance. The lock tongue 9 has been verified by strength calculation and tensile test, and can meet the mechanical strength of the vehicle in high-speed operation.

The skirt plate lock can be rotated 90° to open, which is convenient for the inspection and maintenance of the equipment under the vehicle in the equipment compartment.

The skirt board lock has a self-locking function, which can effectively avoid safety accidents caused by the skirt board falling off during the operation of the vehicle.

The structure of the skirt plate lock is relatively simple, and it has high connection and sealing performance. It is difficult for moisture or dust to enter the equipment compartment, and the safe use of the equipment under the vehicle is guaranteed.

Claims (7)

1. an apron board lock for equipment cabin of vehicular underframe, include the lock body (1) being installed on skirtboard by locking nut (8), lock body (1) inside is provided with rotatable lock core (5), be arranged with the dead bolt (9) be snapped on latch plate (17) in the outboard end of lock core (5), it is characterized in that:

Inner at lock body (1), be arranged with one group of stop collar (3) and slip cap (4) coaxially;

Slip cap (4) has and to be snapped in stop collar (3) circumference in company with the rotation of lock core (5) and to organize projection (16) in locating slot (15) more;

Stop collar (3) is circumferentially provided with 2 groups of locating slots (15), slip cap (4) is provided with a pair projection (16);

2 groups of described locating slots (15) are by right-angled intersection arrangement, and described a pair projection (16) is at 180 °, the circumferential interval of slip cap (4);

Described apron board lock for equipment cabin of vehicular underframe adopts stainless steel.

2. apron board lock for equipment cabin of vehicular underframe according to claim 1, is characterized in that: described slip cap (4) is tight against and is being sheathed on the outside spring (6) of lock core (5).

3. apron board lock for equipment cabin of vehicular underframe according to claim 2, is characterized in that: be arranged with stop collar backstop (12) at stop collar (3) and the circumference of lock body (1).

4. apron board lock for equipment cabin of vehicular underframe according to claim 3, is characterized in that: the outer wall of stop collar (3) is nested in the backstop groove (18) of lock body (1) circumference.

5. apron board lock for equipment cabin of vehicular underframe according to claim 4, is characterized in that: the arranged outside of the outboard end in lock core (5), dead bolt (9) has self-locking nut (10).

6. apron board lock for equipment cabin of vehicular underframe according to claim 5, it is characterized in that:, lock core (5) upper at lock core (5), through the inside and outside two ends of lock body (1), is provided with a pair inner shield ring (7) and outer back-up ring (13).

7. apron board lock for equipment cabin of vehicular underframe according to claim 6, is characterized in that: between lock body (1) and skirtboard, be provided with sealing ring (2).