Skirt locking device

Abstract

The present invention relates to the technical field of train locks, and discloses a skirt panel locking device, comprising a lock body and a mounting bracket, further comprising a gear shaft, a gear, and a lock tongue. The lock body comprises a main body, a lock core, and a linkage shaft. The main body is provided with a mounting cavity, the mounting cavity is provided with a lock core, the lock core is slidably connected to the linkage shaft, the linkage shaft is detachably connected to the gear shaft, and a gear is provided at the working end of the gear shaft. The mounting bracket comprises a main plate, a side plate, and a guide sleeve. A bushing is provided at the center of the main plate, the gear shaft is rotatably arranged in the bushing, the side plates are symmetrically arranged on the main plate, the side plates are interconnected by two sets of guide sleeves, the gear is arranged between the two sets of guide sleeves, the lock tongue is slidably arranged in the guide sleeve, and the lock tongue is meshed with the gear. The present invention can facilitate the installation and removal of the skirt panel, ensure a tight fit between the skirt panel and the car body, and stably withstand the load generated during the operation of the train, effectively improving the work efficiency during maintenance and improving the service life and stability of the locking device.

Description

Technical Field

[0001] The present invention relates to the technical field of train locks, and in particular to a skirt plate locking device. Background Art

[0002] The skirt is a baffle installed on both sides of the train and is one of the important equipment to protect the train's equipment compartment. It not only improves the aerodynamic performance of the train, but also affects the driving safety of the entire rail vehicle. When the train is running at high speed, the skirt can guide the airflow, reduce the airflow on both sides of the car body entering the bottom of the car, reduce air resistance, and at the same time play a shielding and protective role for the various components under the car.

[0003] For maglev trains, especially high-speed maglev trains with speeds of up to 600 km / h, extremely high aerodynamic performance requirements are required. This requires the skirt to fit closely with the body, and the strength of the locks needs to be able to withstand the load caused by the vehicle operation. This not only places high demands on the lock structure and strength, but also poses a great challenge to the life and durability of the locks.

[0004] At present, the skirt panel and the car body are generally fixed together by bolts. There are many parts on the bottom of the car and some of them are large in size. When these parts are repaired, it is often necessary to unscrew the bolts inside and then remove the skirt panel. When the inspection is completed, the skirt panel is fastened with several screws. For example, Chinese patent application number 201610500482.6 discloses a threaded lock for the skirt panel of an EMU, which connects the skirt panel to the car body by connecting the studs at the bottom of the lock core with the four-corner nuts on the skirt panel support frame.

[0005] There are at least the following problems in the existing technology: First, the installation and removal of the skirt plate require screwing the studs, which is very inconvenient to operate, requires a large number of installations and removals, is time-consuming and labor-intensive, and has low efficiency, and inevitably reduces the life and durability of the thread, resulting in high costs for subsequent maintenance and repairs; second, the thread directly bears the load generated during the operation of the train, and long-term use will further reduce the life and durability of the thread. Summary of the Invention

[0006] In response to the deficiencies of the prior art, the present invention develops a skirt panel locking device, which can facilitate the installation and removal of the skirt panel, ensuring a tight fit between the skirt panel and the car body, and can stably withstand the load generated during the operation of the train, effectively improving the work efficiency during maintenance, and increasing the service life of the locking device and the stability during use.

[0007] The technical solution to the technical problem solved by the present invention is: a skirt locking device, including a lock body and a mounting bracket, also including a gear shaft, a gear and a lock tongue, the lock body including a main body, a lock core and a linkage shaft, a mounting cavity is provided inside the main body, a lock core is provided in the mounting cavity, the inner end of the lock core is slidably connected to the active end of the linkage shaft, the driven end of the linkage shaft is detachably connected to the connecting end of the gear shaft, the working end of the gear shaft is provided with a gear, the mounting bracket includes a main board, a side plate and a guide sleeve, a bushing is provided in the center of the main board, the connecting end of the gear shaft is rotatably set in the bushing, two groups of side plates are symmetrically arranged on the main board, the side plates are connected to each other through two groups of guide sleeves, the gear is arranged between the two groups of guide sleeves, and openings are provided on the opposite sides of the two groups of guide sleeves, the lock tongue is slidably set in the guide sleeve, the two groups of lock tongues are symmetrically arranged about the center of the gear, a rack is provided on the lock tongue, and the rack is meshed with the gear through the opening.

[0008] As an optimization, a telescopic cavity is provided on the end surface of the inner end of the lock core, and the lock core is mounted on the active end of the linkage shaft through the telescopic cavity. Two sets of mounting holes are symmetrically provided on the side wall of the inner end of the lock core, and a linkage rod is provided in the mounting hole. A limiting slide groove is provided through the active end of the linkage shaft, and the linkage rod is arranged in the limiting slide groove. A spring is provided in the telescopic cavity, and the spring is arranged between the linkage shaft and the lock core. By providing the telescopic cavity, when the lock core slides along the axis in the mounting cavity, it can slide without being affected by the active end of the linkage shaft, and can drive the linkage shaft to rotate together when rotating, thereby driving the lock tongue to telescope. By providing the linkage rod, mounting hole and limiting slide groove, the lock core can be prevented from being separated from the linkage shaft. As the lock core telescopes and slides on the active end of the linkage shaft, the linkage rod also slides in the limiting slide groove. By providing the spring, the lock core can return to its original state after sliding toward the linkage shaft, thereby performing self-locking.

[0009] As an optimization, three groups of protrusions are provided circumferentially on the inner wall of the installation cavity, including a first protrusion, a second protrusion and a third protrusion. Slide grooves are provided between the first protrusion and the second protrusion and between the second protrusion and the third protrusion. A card block and a stop block are provided on the outer wall of the lock core. The card block is provided in the slide groove, and the stop block is provided between the third protrusion and the first protrusion. By arranging the first protrusion, the second protrusion and the third protrusion, two sets of slide grooves can be formed, and the limiting block can make the block only slide but not rotate in the slide groove, and cooperate with the spring to ensure that the lock core is always in the slide groove when there is no external force, thereby achieving a self-locking effect; when the lock core is subjected to external force and slides along the axial direction toward the linkage shaft in the installation cavity, the block will slide in the slide groove, and after sliding out of one slide groove, it can rotate in the direction of the other slide groove. At the same time, the block rotates between the third protrusion and the first protrusion. When the block stops rotating after touching the protrusion, the block is just aligned with the other slide groove. At this time, the external force is released, and the spring will push the lock core to slide away from the linkage shaft, restore it to its original state, and the block enters the other slide groove to complete the self-locking.

[0010] As an optimization, a baffle is installed on the outer end of the lock cylinder. The baffle has a diameter equal to the inner diameter of the installation cavity and is connected to a block. A button is installed on the outer end face of the lock cylinder, and the outer end face of the button is located within the installation cavity. The baffle can cooperate with the block, block, telescopic cavity, and linkage shaft to stabilize the lock cylinder, preventing it from shaking in the installation cavity and providing a certain degree of dust and water resistance. The button can be easily pressed by the operator to apply external force to the lock cylinder.

[0011] As an optimization, a first sealing groove is provided on the baffle, a first sealing ring is provided in the first sealing groove, and the first sealing ring is provided between the baffle and the main body. By providing the first sealing groove and the first sealing ring, the dustproof and waterproof capabilities are further enhanced.

[0012] As an optimization, the side wall of the linkage shaft is provided with a convex ring, a second sealing groove, and a retaining ring groove in sequence from the active end to the driven end. A groove corresponding to the convex ring is provided in the main body, and the convex ring is rotatably arranged in the groove. A second sealing ring is provided in the second sealing groove, and the second sealing ring is provided between the linkage shaft and the main body. A shaft spring retaining ring is provided in the retaining ring groove, and the side wall of the shaft spring retaining ring is tightly attached to the main body. By providing the convex ring, groove, retaining ring groove, and shaft spring retaining ring, the linkage shaft can be fixed in position to prevent axial sliding and only allow circumferential rotation. By providing the second sealing groove and the second sealing ring, the gap between the linkage shaft and the main body can be sealed, achieving the effect of waterproofing and dustproofing.

[0013] As an optimization, a connecting groove is provided on the end face of the connecting end of the gear shaft, the driven end of the linkage shaft is arranged in the connecting groove, a third sealing groove is provided on the side wall of the connecting end of the gear shaft, a third sealing ring is provided in the third sealing groove, the third sealing ring is provided between the gear shaft and the bushing, and the working end of the gear shaft is provided with a flat washer, a spring washer, a fastening nut and a cotter pin in the direction from the gear to the end face of the working end. By providing a connecting groove, the linkage shaft and the gear shaft can be connected and installed conveniently, adapting to various installation situations and improving the convenience of connection; by providing a third sealing groove and a third sealing ring, the gap between the gear shaft and the bushing can be sealed to achieve the effect of waterproofing and dustproofing; by providing a flat washer, a spring washer, a fastening nut and a cotter pin, the gear can be fixed, and the cotter pin can prevent the fastening nut from loosening.

[0014] As an optimization, the mainboard is designed in a "J" shape, consisting of a recess and a mounting portion. The mounting portions are located on either side of the recess, with a bushing running through the center of the recess. The mounting portion is provided with mounting holes. The side panels are installed vertically on the mainboard, with the middle of the side panels connected to the recess and the ends of the side panels connected to the mounting portion. By arranging the mainboard in a "J" shape, the side panels connect to the mainboard in three sections, further improving the structural strength and stability of the mounting bracket. The recess can accommodate the bushing, greatly facilitating installation.

[0015] As an optimization, a limit slot is provided on the side where the two sets of guide sleeves face away from each other. A limit rod is installed in the limit slot, and the bottom of the limit rod is connected to the lock tongue. By providing the limit slot and limit rod, the lock tongue can be limited to rotate within the guide sleeve, preventing the rack and gear from getting stuck or separating.

[0016] As an optimization, a mounting plate is provided at the end of the main body away from the mounting bracket. The inner end surface of the mounting plate is provided with a fourth sealing groove, and a fourth sealing ring is provided in the fourth sealing groove. A mounting surface is provided on the side wall of the main body. The mounting surface is flat. A fixing nut and a knurled disc washer are provided at the end of the main body near the mounting bracket. The fixing nut is provided with a set screw, and the knurled disc washer is disposed between the fixing nut and the mounting plate. The mounting plate allows the main body to be positioned and mounted on the skirt support frame. The fourth sealing groove and the fourth sealing ring can close the gap between the main body and the skirt support frame. The mounting surface has a positioning function and can be inserted into the mounting hole of the skirt support frame to prevent the main body from being mispositioned. The fixing nut, knurled disc washer, and set screw can cooperate with the mounting plate to stably mount the main body on the skirt support frame. The mounting plate presses against one side of the skirt support frame, the fixing nut presses the knurled disc washer against the other side of the skirt support frame, and the set screw prevents the fixing nut from loosening, further ensuring the stability of the installation.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] By arranging a lock body and a mounting bracket, the locking device can be divided into two parts, which is suitable for various installation situations; by arranging a main body, the lock body can be installed on the skirt support frame; by arranging a mounting cavity, the lock core and the linkage shaft can be installed, so that the main body can cooperate with the lock core to achieve self-locking, and the lock is more stable and reliable; by arranging a lock core, it can slide along the axial direction and rotate in the mounting cavity, and the two actions cooperate with each other to enable the lock to switch the switch state and achieve self-locking at the same time, maintaining the open or closed state; by arranging a linkage shaft, it can be connected with the gear shaft, not only can the rotational movement of the lock core be transferred to the gear shaft, but also the locking device can be divided into two parts, which is suitable for various installation situations; by arranging a gear shaft, it can transmit the rotational movement, drive the gear to rotate, and thus drive the two sets of lock tongues to telescopic displacement in the guide sleeve; by arranging a gear, a lock tongue and a rack, the gear and the lock tongue are meshed and connected for transmission, and the two sets of lock tongues can be linked to achieve simultaneous movement of the two lock tongues, which is convenient for opening or closing and simple to operate; By arranging two groups of lock tongues symmetrically about the center of the gear, the movement directions of the two groups of lock tongues are opposite, and the skirt panels on both sides of the left and right sides are locked synchronously, which directly bears the load generated during the operation of the train and fully ensures the sealing and safety of the skirt panels after locking. When one group of lock tongues is under force, the gear simultaneously links the other group of lock tongues, which will have a certain limiting effect on the stressed lock tongue, so it has a certain self-locking function; by arranging a guide sleeve, the lock tongue can be limited so that the lock tongue can be extended and retracted in the guide sleeve, and the opening allows the gear and the lock tongue to be meshed and connected; by arranging a main board and a side plate, a stable mounting bracket can be formed in conjunction with the guide sleeve, and the bushing can be used to support the gear shaft to rotate in the bushing, and the lock tongue can be supported to move telescopically in the guide sleeve, thereby ensuring that the gear and the rack are accurately and smoothly meshed; the present invention can facilitate the installation and removal of the skirt panel, meet the tight fit between the skirt panel and the car body, and stably bear the load generated during the operation of the train, effectively improve the work efficiency during maintenance, and improve the service life of the locking device and the stability during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The overall structure of an embodiment of the present invention is shown in FIG. Figure 1 .

[0020] Figure 2 The overall structure of an embodiment of the present invention is shown in FIG. Figure 2 .

[0021] Figure 3 This is a front view of an embodiment of the present invention.

[0022] Figure 4 for Figure 3 Cross-sectional view along the AA direction.

[0023] Figure 5 This is a front view of the main body in an embodiment of the present invention.

[0024] Figure 6 A schematic diagram of the structure of the main body in one embodiment of the present invention Figure 1 .

[0025] Figure 7 A schematic diagram of the structure of the main body in one embodiment of the present invention Figure 2 .

[0026] Figure 8 A schematic diagram of the structure of a lock core in one embodiment of the present invention Figure 1 .

[0027] Figure 9 A schematic diagram of the structure of a lock core in one embodiment of the present invention Figure 2 .

[0028] Figure 10 Schematic diagram of the structure of the linkage shaft in one embodiment of the present invention.

[0029] Figure 11 Schematic diagram of the structure of the gear shaft in one embodiment of the present invention.

[0030] Figure 12 Schematic diagram of the working end of the gear shaft in one embodiment of the present invention.

[0031] Figure 13 Schematic diagram of a lock tongue in one embodiment of the present invention.

[0032] Figure 14 Schematic diagram of a guide sleeve in an embodiment of the present invention.

[0033] In the figure, 1 is the main body; 2 is the lock core; 3 is the linkage shaft; 4 is the gear shaft; 5 is the gear; 6 is the lock tongue; 7 is the main plate; 8 is the side plate; 9 is the guide sleeve; 10 is the bushing; 11 is the linkage rod; 12 is the spring; 13 is the fixing nut; 14 is the knurled disc washer; 15 is the set screw.

[0034] 101, mounting cavity; 102, first protrusion; 103, second protrusion; 104, third protrusion; 105, slide groove; 106, groove; 107, mounting plate; 108, fourth sealing groove; 109, mounting surface;

[0035] 21. Telescopic cavity; 22. Mounting hole; 23. Clamping block; 24. Stopper; 25. Baffle; 26. Button; 27. First sealing groove;

[0036] 31. Limiting slide groove; 32. Raised ring; 33. Second sealing groove; 34. Retaining ring groove; 35. Spring retaining ring for shaft;

[0037] 41. Connecting groove; 42. Third sealing groove; 43. Flat washer; 44. Spring washer; 45. Fastening nut; 46. Split pin;

[0038] 61. Rack; 62. Limit rod;

[0039] 91. Opening; 92. Limiting groove. DETAILED DESCRIPTION

[0040] In order to clearly illustrate the technical features of this solution, the present invention is described in detail below through specific implementation methods and in conjunction with the accompanying drawings.

[0041] Example 1

[0042] Figures 1 to 14 Schematic diagram of an embodiment of the present invention, as shown in FIG. Figures 1 to 4 As shown, a skirt locking device includes a lock body and a mounting bracket, also including a gear shaft 4, a gear 5 and a lock tongue 6. The lock body includes a main body 1, a lock core 2 and a linkage shaft 3. A mounting cavity 101 is provided inside the main body 1, and a lock core 2 is provided in the mounting cavity 101. The inner end of the lock core 2 is slidably connected to the active end of the linkage shaft 3, and the driven end of the linkage shaft 3 is detachably connected to the connecting end of the gear shaft 4. The working end of the gear shaft 4 is provided with a gear 5. The mounting bracket includes a main board 7, a side plate 8 and a guide sleeve 9. A positioning hole is provided on the main board 7. A bushing 10 is provided through the center of the main board 7. The connecting end of the gear shaft 4 is rotatably set in the bushing 10. Two groups of side plates 8 are symmetrically arranged on the main board 7. The side plates 8 are connected to each other through two groups of guide sleeves 9. The gear 5 is arranged between the two groups of guide sleeves 9. Openings 91 are provided on the opposite sides of the two groups of guide sleeves 9. The lock tongue 6 is slidably set in the guide sleeve 9. The two groups of lock tongues 6 are symmetrically arranged about the center of the gear 5. A rack 61 is provided on the lock tongue 6, and the rack 61 meshes with the gear 5 through the opening 91.

[0043] By setting a lock body and a mounting bracket, the locking device can be divided into two parts to adapt to various installation situations; by setting a main body 1, the lock body can be installed on the skirt support frame; by setting a mounting cavity 101, the lock core 2 and the linkage shaft 3 can be installed, so that the main body 1 can cooperate with the lock core 2 to achieve self-locking, and the lock is more stable and reliable; by setting the lock core 2, it can slide along the axial direction in the mounting cavity 101 and rotate in the mounting cavity 101, and the two actions cooperate with each other to enable the lock to switch the switch state and achieve self-locking at the same time, maintaining the open or closed state; by setting a linkage shaft 3, it can be connected with the gear shaft 4, not only can the rotational movement of the lock core 2 be transferred to the gear shaft 4, but also the locking device can be divided into two parts to adapt to various installation situations; by setting the gear shaft 4, the rotational movement can be transmitted, driving the gear 5 to rotate, thereby driving the two sets of lock tongues 6 to telescopic displacement in the guide sleeve 9; by setting the gear 5, the lock tongue 6 and the rack 61, the gear 5 and the lock tongue 6 The meshing connection is used for transmission, and the two sets of lock tongues 6 can be linked to each other to realize simultaneous movement of the two lock tongues 6, which is convenient for opening or closing and simple to operate; by arranging the two sets of lock tongues 6 to be symmetrical about the center of the gear 5, the movement directions of the two sets of lock tongues 6 are opposite, and the left and right interlaced locks of the skirt panels on both sides are completed synchronously, which directly bears the load generated during the operation of the train, fully ensuring the sealing and safety of the skirt panels after locking, and when one set of lock tongues 6 is subjected to force, the gear 5 simultaneously links the other set of lock tongues 6, which will have a certain limiting effect on the stressed lock tongue 6, so it has a certain self-locking function; by arranging the guide sleeve 9, the lock tongue 6 can be limited and the lock tongue 6 can be extended and retracted in the guide sleeve 9, and the opening 91 makes the gear 5 and the lock tongue 6 meshed and connected; by arranging the main board 7 and the side plate 8, a stable mounting bracket can be formed in conjunction with the guide sleeve 9, and the bushing 10 can be used to support the gear shaft 4 to rotate in the bushing 10, and the lock tongue 6 can be supported to move telescopically in the guide sleeve 9, ensuring that the gear 5 and the rack 61 are accurately and smoothly engaged.

[0044] like Figure 8 and Figure 9As shown, a telescopic cavity 21 is provided on the end face of the inner end of the lock cylinder 2. The cross-section of the telescopic cavity 21 is a rectangle with round ends. The lock cylinder 2 is sleeved on the active end of the linkage shaft 3 through the telescopic cavity 21. The active end of the linkage shaft 3 cooperates with the telescopic cavity 21. Two groups of mounting holes 22 are symmetrically provided on the side wall of the inner end of the lock cylinder 2. A linkage rod 11 is provided in the mounting hole 22. A limiting groove 31 is provided through the active end of the linkage shaft 3. The linkage rod 11 is provided in the limiting groove 31. The end heads of the linkage rod 11 cooperate with the inner wall of the mounting cavity 101. A spring 12 is provided in the telescopic cavity 21. The spring 12 is provided between the linkage shaft 3 and the lock cylinder 2. By providing the telescopic cavity 21, when the lock core 2 slides in the installation cavity 101 along the axial direction, it can slide without being affected by the active end of the linkage shaft 3, and the rectangular cross-section with round heads at both ends can drive the linkage shaft 3 to rotate together when rotating, thereby driving the lock tongue 6 to telescope and move; by providing the linkage rod 11, the installation hole 22 and the limiting slide groove 31, the lock core 2 can be prevented from separating from the linkage shaft 3. As the lock core 2 telescopes and slides on the active end of the linkage shaft 3, the linkage rod 11 also slides in the limiting slide groove 31; by providing the spring 12, the lock core 2 can return to its original state and self-lock after sliding toward the linkage shaft 3. The spring 12 can be preset with a certain compression amount, so that the lock core 2 can always be subjected to an outward elastic force.

[0045] like Figure 5 、 Figure 6 and Figure 7As shown, three groups of protrusions are provided on the inner side wall of the installation cavity 101 in the circumferential direction, including a first protrusion 102, a second protrusion 103 and a third protrusion 104. A sliding groove 105 is provided between the first protrusion 102 and the second protrusion 103 and between the second protrusion 103 and the third protrusion 104. The outer side wall of the lock core 2 is provided with a card block 23 and a stop block 24. The card block 23 is arranged in the sliding groove 105, and the width of the card block 23 is equal to the width of the sliding groove 105. The stop block 24 is arranged between the third protrusion 104 and the first protrusion 102. The protrusions are in close contact with the side wall of the lock core 2, and the tops of the card block 23 and the stop block 24 are in close contact with the inner wall of the installation cavity 101. By setting the first protrusion 102, the second protrusion 103 and the third protrusion 104, two sets of slide grooves 105 can be formed, and the limit block 23 can make the block 23 only slide but not rotate in the slide groove 105. In conjunction with the spring 12, when the lock cylinder 2 is not subjected to external force, the block 23 is always in the slide groove 105, achieving a self-locking effect; when the lock cylinder 2 is subjected to external force and slides along the axial direction toward the linkage shaft 3 in the installation cavity 101, the block 23 will be in the slide groove 105. The block 23 slides out of one of the slide grooves 105 and can then rotate toward the other slide groove 105. At the same time, the block 24 rotates between the third protrusion 104 and the first protrusion 102. When the block 24 stops rotating after touching the protrusion, the block 23 is aligned with the other slide groove 105. At this time, the external force is released, and the spring 12 pushes the lock cylinder 2 to slide away from the linkage shaft 3 and restore it to its original state. The block 23 enters the other slide groove 105, completing the self-locking.

[0046] like Figure 8 and Figure 9 As shown, the outer end of the lock cylinder 2 is provided with a baffle 25, the diameter of which is equal to the inner diameter of the installation cavity 101, the baffle 25 is connected to the block 24, the distance between the baffle 25 and the block 23 is greater than or equal to the width of the protrusion, and the distance between the baffle 25 and the protrusion is equal to the length of the limiting slide 31, and the outer end surface of the lock cylinder 2 is provided with a button 26, the outer end surface of the button 26 is arranged in the installation cavity 101, and the outer end surface of the button 26 is provided with a pointer, which corresponds to the block 23. By providing the baffle 25, the lock cylinder 2 can be stabilized in cooperation with the block 23, the block 24, the telescopic cavity 21 and the linkage shaft 3 to prevent the lock cylinder 2 from shaking in the installation cavity 101, and has a certain dustproof and waterproof capability; by providing the button 26, it is convenient for the operator to press it to apply external force to the lock cylinder 2, and the pointer can correspond to the position of the block 23, making it convenient for the operator to know the status of the lock cylinder 2.

[0047] The baffle 25 is provided with a first sealing groove 27, in which a first sealing ring is provided, and the first sealing ring is provided between the baffle 25 and the main body 1. By providing the first sealing groove 27 and the first sealing ring, the dustproof and waterproof capabilities are further enhanced.

[0048] like Figure 10As shown, the side wall of the linkage shaft 3 is provided with a convex ring 32, a second sealing groove 33, and a retaining ring groove 34 in the direction from the active end to the driven end. A groove 106 corresponding to the convex ring 32 is provided in the main body 1. The convex ring 32 is rotatably arranged in the groove 106. A second sealing ring is provided in the second sealing groove 33. The second sealing ring is arranged between the linkage shaft 3 and the main body 1. A shaft spring retaining ring 35 is provided in the retaining ring groove 34. The side wall of the shaft spring retaining ring 35 is in close contact with the main body 1. By providing the convex ring 32, the groove 106, the retaining ring groove 34, and the shaft spring retaining ring 35, the linkage shaft 3 can be fixed in position to prevent the linkage shaft 3 from sliding axially and only rotate in the circumferential direction. By providing the second sealing groove 33 and the second sealing ring, the gap between the linkage shaft 3 and the main body 1 can be sealed, achieving the effect of waterproofing and dustproofing.

[0049] like Figure 11 and Figure 12 As shown, a connecting groove 41 is provided on the end face of the connecting end of the gear shaft 4, and the cross-section of the connecting groove 41 is a rounded rectangle. The driven end of the linkage shaft 3 is arranged in the connecting groove 41, and the driven end of the linkage shaft 3 cooperates with the connecting groove 41. A third sealing groove 42 is provided on the side wall of the connecting end of the gear shaft 4, and a third sealing ring is provided in the third sealing groove 42. The third sealing ring is provided between the gear shaft 4 and the bushing 10. The diameter of the connecting end of the gear shaft 4 is larger than the diameter of the working end. An outer retaining ring is provided on the front outer wall of the bushing 10, and an inner retaining ring is provided on the rear inner wall. The connecting end of the gear shaft 4 is arranged inside the bushing 10, and the working end is connected to the gear 5 through the inner retaining ring. The working end of the gear shaft 4 is provided with a flat washer 43, a spring washer 44, a fastening nut 45 and a cotter pin 46 in sequence from the gear 5 to the end face of the working end. By setting the connecting groove 41, the linkage shaft 3 and the gear shaft 4 are conveniently connected and installed, which is suitable for various installation conditions and improves the convenience of connection; the driven end of the linkage shaft 3 is matched with the connecting groove 41, both of which are rounded rectangles, with high strength and not easy to damage the corners; by setting the third sealing groove 42 and the third sealing ring, the gap between the gear shaft 4 and the bushing 10 can be sealed to achieve the effect of waterproof and dustproof; by setting the flat washer 43, the spring washer 44, the fastening nut 45 and the cotter pin 46, the gear 5 can be fixed, and the cotter pin 46 can prevent the fastening nut 45 from loosening.

[0050] The main board 7 is in a "J" shape, comprising a recess and a mounting portion. The mounting portions are disposed on either side of the recess, with a bushing 10 extending through the center of the recess. The sidewall of the outer retaining ring is in close contact with the recess. The mounting portion is provided with mounting holes 22. The side panels 8 are disposed perpendicularly to the main board 7, with the middle portion of the side panels 8 connected to the recess and the ends of the side panels 8 connected to the mounting portions. By configuring the main board 7 in a "J" shape, the side panels 8 are connected to the main board 7 in three sections, further improving the structural strength and stability of the mounting bracket. The recess can accommodate the bushing 10 and fixing nut 13, greatly facilitating installation.

[0051] like Figure 13 and Figure 14 As shown, a limiting groove 92 is provided on the side away from each other of the two sets of guide sleeves 9, and a limiting rod 62 is provided in the limiting groove 92. The bottom of the limiting rod 62 is connected to the lock tongue 6. By providing the limiting groove 92 and the limiting rod 62, the lock tongue 6 can be limited to rotate in the guide sleeve 9 to prevent the rack 61 from getting stuck or separating from the gear 5.

[0052] like Figure 5 、 Figure 6 and Figure 7 As shown, a mounting plate 107 is provided at one end of the main body 1 away from the mounting bracket, a fourth sealing groove 108 is provided on the inner end surface of the mounting plate 107, a fourth sealing ring is provided in the fourth sealing groove 108, a switch mark is provided on the outer end surface of the mounting plate 107, and the switch marks correspond to the two groups of slide grooves 105 respectively. A mounting surface 109 is provided on the side wall of the main body 1, and the mounting surface 109 is a plane. A fixing nut 13 and a knurled disc washer 14 are provided on the end of the main body 1 close to the mounting bracket, a set screw 15 is provided on the fixing nut 13, and the knurled disc washer 14 is arranged between the fixing nut 13 and the mounting plate 107. By setting the mounting plate 107, the main body 1 can be positioned and installed on the skirt board support frame; by setting the fourth sealing groove 108 and the fourth sealing ring, the gap between the main body 1 and the skirt board support frame can be closed; by setting the switch mark to correspond to the two sets of slide grooves 105 respectively, the status of the locking device can be displayed, and the position of the block 23 can be clearly determined in conjunction with the pointer on the button 26, and the status of the lock cylinder 2 can be determined; by setting the mounting surface 109, it has a positioning function and can be inserted into the mounting hole on the skirt board support frame to prevent the main body 1 from being incorrectly positioned; by setting the fixing nut 13, the knurled disc washer 14 and the tightening screw 15, the main body 1 can be stably installed on the skirt board support frame in conjunction with the mounting plate 107, the mounting plate 107 presses one side of the skirt board support frame, the fixing nut 13 can press the knurled disc washer 14 to the other side of the skirt board support frame, and the tightening screw 15 can prevent the fixing nut 13 from loosening, further ensuring the stability of the installation.

[0053] When in use, the main body 1 is stably inserted into the mounting position on the skirt support frame, the mounting plate 107 presses one side of the skirt support frame, and then the knurled disc washer 14 is pressed to the other side of the skirt support frame with the fixing nut 13, and then the fixing nut 13 is locked by the set screw 15 to complete the installation of the main body 1 part in the lock body; then the main board 7 is also installed to the other side of the skirt support frame through the positioning hole on the main board 7. At this time, the driven end of the linkage shaft 3 is inserted into the connecting groove 41 of the gear shaft 4, so that the lock body and the mounting bracket can be stably transmitted, and the installation is completed.

[0054] When installing the skirt board, the staff first closes the skirt board to the skirt board support frame. At this time, the lock tongue 6 is completely retracted in the guide sleeve 9, and the pointer on the button 26 points to the open position mark on the outer end surface of the mounting plate 107. The open position mark corresponds to the slide groove 105 between the first protrusion 102 and the second protrusion 103, and the closed position mark corresponds to the slide groove 105 between the second protrusion 103 and the third protrusion 104; then the staff uses a tool to insert the mounting cavity 101 and push the lock core 2. The lock core 2 is subjected to external force and slides along the axis toward the linkage shaft 3 in the mounting cavity 101. At this time, under the action of the telescopic cavity 21, the active end of the linkage shaft 3 will not hinder As the lock cylinder 2 slides, the spring 12 is compressed, and the linkage rod 11 slides in the limiting slot 31, and the block 23 slides in the slot 105 between the first protrusion 102 and the second protrusion 103, and the stopper 24 is always in contact with the side wall of the third protrusion 104 toward the third protrusion 104; when the block 23 slides out of the slot 105 between the first protrusion 102 and the second protrusion 103, it can be rotated. Under the abutment and limiting action of the stopper 24, the block 23 can only be rotated in the direction of the closed position mark. Therefore, the staff rotates the tool to rotate the lock cylinder 2, and the pointer on the button 26 rotates toward the closed position mark. Cooperating with the telescopic cavity 21, the lock cylinder 2 will drive the linkage shaft 3 to rotate synchronously, and the driven end of the linkage shaft 3 is inserted into the connecting groove 41, thereby driving the gear shaft 4 to rotate, and the gear shaft 4 drives the gear 5 to rotate, and the gear 5 meshes with the rack 61 through the opening 91, driving the two sets of lock tongues 6 to extend synchronously from the guide sleeve 9, and the two sets of lock tongues 6 are respectively inserted into the corresponding lock holes on the skirt plates on both sides; when the staff rotates the tool to the extreme position, the pointer on the button 26 just points to the closed position mark, and the stopper 24 is in abutment with the side wall of the first protrusion 102 to prevent the lock cylinder 2 from excessive rotation, so that the block 23 is in contact with the second protrusion 103 and the third protrusion The slide grooves 105 between the blocks 104 are aligned. At this time, the two sets of lock tongues 6 are fully inserted into the corresponding lock holes on the skirt panels on both sides. The lock tongues 6 can directly bear the load generated by the skirt panels during the operation of the train. The staff can stop applying force to the tool to allow the spring 12 to recover its deformation, release the elastic force, and push the lock cylinder 2 away from the linkage shaft 3. The linkage rod 11 slides in the limiting slide groove 31 in the direction away from the main board 7 until it slides to the end of the limiting slide groove 31, so that the lock cylinder 2 stops sliding and prevents the lock cylinder 2 from falling off the linkage rod 11, and the block 23 also enters the slide groove 105 between the second protrusion 103 and the third protrusion 104, completing the self-locking of the lock and realizing the installation of the skirt panel.

[0055] The process for removing the skirt panel is the same as that for installing it; simply rotate the tool to move the indicator on button 26 from the closed position mark toward the open position mark. The present invention can be entirely constructed of stainless steel, boasting a simple and ingenious internal structure, effectively ensuring safety and reliability. It facilitates installation and removal of the skirt panel, significantly reducing the time required for installation and removal, ensuring a tight fit between the skirt panel and the vehicle body, and stably withstanding the loads generated during train operation. This effectively improves maintenance efficiency, enhances the service life of the locking device, and increases its stability during use.

[0056] The descriptions of the orientation or relative position relationship of the structure in the present invention, such as the orientation or relative position relationship indicated by "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc., are based on the orientation or position relationship shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the structure referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

Claims

1. A skirt panel locking device, comprising a lock body and a mounting bracket, characterized in that: The lock body further comprises a gear shaft (4), a gear (5) and a lock tongue (6); the lock body comprises a main body (1), a lock core (2) and a linkage shaft (3); a mounting cavity (101) is provided inside the main body (1); a lock core (2) is provided in the mounting cavity (101); the inner end of the lock core (2) is slidably connected to the active end of the linkage shaft (3); the driven end of the linkage shaft (3) is detachably connected to the connecting end of the gear shaft (4); the mounting bracket comprises a main board (7), a side board (8) and a guide sleeve (9); a bushing (10) is provided at the center of the main board (7); the connecting end of the gear shaft (4) is rotatable The invention relates to a gear shaft (4) provided with a gear (5) at a working end thereof, two sets of side plates (8) being symmetrically arranged on a main plate (7), the side plates (8) being connected to each other through two sets of guide sleeves (9), the gear (5) being arranged between the two sets of guide sleeves (9), the opposite sides of the two sets of guide sleeves (9) being provided with openings (91), the lock tongue (6) being slidably arranged in the guide sleeves (9), the two sets of lock tongues (6) being symmetrically arranged about the center of the gear (5), the lock tongue (6) being provided with a rack (61), and the rack (61) being engaged with the gear (5) through the opening (91).

2. The skirt panel locking device according to claim 1, characterized in that: A telescopic cavity (21) is provided on the end surface of the inner end of the lock core (2), and the lock core (2) is sleeved on the active end of the linkage shaft (3) through the telescopic cavity (21). Two groups of mounting holes (22) are symmetrically provided on the side wall of the inner end of the lock core (2). A linkage rod (11) is provided in the mounting hole (22), and a limiting slide groove (31) is provided on the active end of the linkage shaft (3). The linkage rod (11) is provided in the limiting slide groove (31). A spring (12) is provided in the telescopic cavity (21), and the spring (12) is provided between the linkage shaft (3) and the lock core (2).

3. The skirt panel locking device according to claim 2, characterized in that: Three groups of protrusions are provided on the inner side wall of the installation cavity (101), including a first protrusion (102), a second protrusion (103) and a third protrusion (104). A sliding groove (105) is provided between the first protrusion (102) and the second protrusion (103), and between the second protrusion (103) and the third protrusion (104). A clamping block (23) and a stopper (24) are provided on the outer side wall of the lock core (2). The clamping block (23) is provided in the sliding groove (105), and the stopper (24) is provided between the third protrusion (104) and the first protrusion (102).

4. The skirt panel locking device according to claim 3, wherein: The outer end of the lock core (2) is provided with a baffle (25), the diameter of the baffle (25) is equal to the inner diameter of the installation cavity (101), the baffle (25) is connected to the block (24), the outer end surface of the lock core (2) is provided with a button (26), and the outer end surface of the button (26) is arranged in the installation cavity (101).

5. The skirt panel locking device according to claim 4, characterized in that: A first sealing groove (27) is provided on the baffle (25), a first sealing ring is provided in the first sealing groove (27), and the first sealing ring is arranged between the baffle (25) and the main body (1).

6. The skirt panel locking device according to claim 1, characterized in that: The side wall of the linkage shaft (3) is provided with a convex ring (32), a second sealing groove (33) and a retaining ring groove (34) in sequence from the active end to the driven end; a groove (106) corresponding to the convex ring (32) is provided in the main body (1); the convex ring (32) is rotatably arranged in the groove (106); a second sealing ring is provided in the second sealing groove (33); the second sealing ring is arranged between the linkage shaft (3) and the main body (1); a shaft spring retaining ring (35) is provided in the retaining ring groove (34); and the side wall of the shaft spring retaining ring (35) is in close contact with the main body (1).

7. The skirt panel locking device according to claim 6, characterized in that: A connecting groove (41) is provided on the end surface of the connecting end of the gear shaft (4), the driven end of the linkage shaft (3) is arranged in the connecting groove (41), a third sealing groove (42) is provided on the side wall of the connecting end of the gear shaft (4), a third sealing ring is provided in the third sealing groove (42), and the third sealing ring is arranged between the gear shaft (4) and the bushing (10), and a flat washer (43), a spring washer (44), a fastening nut (45) and a cotter pin (46) are provided on the working end of the gear shaft (4) in sequence from the gear (5) to the end surface of the working end.

8. The skirt panel locking device according to claim 7, characterized in that: The main board (7) is in a "J" shape and includes a recess and a mounting portion. The mounting portions are arranged on both sides of the recess. The bushing (10) is arranged through the center of the recess. The mounting portion is provided with a mounting hole (22). The side plate (8) is vertically arranged on the main board (7). The middle portion of the side plate (8) is connected to the recess, and both ends of the side plate (8) are connected to the mounting portion.

9. The skirt panel locking device according to claim 1, characterized in that: A limiting groove (92) is provided on the side of the two groups of guide sleeves (9) that are away from each other. A limiting rod (62) is provided in the limiting groove (92). The bottom of the limiting rod (62) is connected to the lock tongue (6).

10. The skirt panel locking device according to any one of claims 1 to 9, characterized in that: A mounting plate (107) is provided at one end of the main body (1) away from the mounting bracket, a fourth sealing groove (108) is provided on the inner end surface of the mounting plate (107), a fourth sealing ring is provided in the fourth sealing groove (108), a mounting surface (109) is provided on the side wall of the main body (1), and the mounting surface (109) is a plane, a fixing nut (13) and a knurled disc washer (14) are provided at one end of the main body (1) close to the mounting bracket, a set screw (15) is provided on the fixing nut (13), and the knurled disc washer (14) is arranged between the fixing nut (13) and the mounting plate (107).

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