An electric device for passenger car double-side sliding doors

Abstract

The present invention relates to an electric device for a passenger car double-leaf plug door, comprising a track box fixed to the passenger car body, a plug drive trolley installed in the track box, two plug guide rails provided on the track box, a guide slide provided in the middle of the track box, the body of the plug drive trolley consisting of two left and right body end plates, a top crossbeam, and a bottom guide bar, a transmission screw provided above the bottom guide bar, a left-handed threaded section provided on the left portion of the transmission screw, a right-handed threaded section provided on the right portion, a left-handed nut assembly installed on the left-handed threaded section, and a right-handed nut assembly installed on the right-handed threaded section, the left portion of the bottom guide bar being fitted with a left-portable door frame, and the right portion of the bottom guide bar being fitted with a right-portable door frame. The present invention optimizes the volume and weight of the plug drive trolley, can accurately adjust the axial positions of the left and right port frames, and eliminates the impact and noise during the operation of the plug drive trolley.

Description

Technical field:

[0001] The invention relates to the technical field of passenger bus plug sliding doors, in particular to an electric device for passenger bus split plug sliding doors. Background technology:

[0002] With the development of rail transit, automatic doors with structures such as sliding doors, external doors, and internal doors are widely used on rail transit buses and platforms. Chinese Patent No. 201220298714.1 discloses an electric sliding door device for passenger buses, comprising a track box and a sliding door trolley. Two sliding guide rails are positioned relative to each other at the bottom of the track box, and a guide rail is positioned in the middle of the track box. Two wheels are positioned at the bottom of the sliding door trolley, and a sliding door drive shaft is positioned at the top of the vehicle body. A sector-shaped sliding door gear is positioned on the left side of the sliding door drive shaft. A left crank and a left connecting rod are mounted on the left end of the sliding door drive shaft, and a right crank and a right connecting rod are mounted on the right end of the sliding door drive shaft. A left-carrying door frame is mounted on one of the two bottom guide bars, and a right-carrying door frame is mounted on the other guide bar. The left and right sliding door frames are connected to the screw nuts on the transmission screw. The top of the left sliding door frame is connected to the guide rail via a roller mechanism. A drive motor and a planetary gear transmission are positioned at the rear of the sliding door trolley. This patent can be used for double-opening (or split-opening) passenger car doors. However, the patent has a complex structure, using dual drive screws and dual guide rods, which takes up a lot of space and produces loud noise when the door is initially closed. Therefore, a new electric device for split-opening plug sliding doors on passenger cars is needed. Summary of the invention:

[0003] The present invention aims to provide an electric device for a passenger bus double-sided sliding plug door. In this device, the plug drive trolley is equipped with only a bottom guide bar and a drive screw, and the left and right door carriers are mounted on the same bottom guide bar. This invention optimizes the size and weight of the plug drive trolley. It enables precise adjustment of the axial position of the left and right door carriers. Combined with the buffering features provided in the left- and right-hand nut assemblies, this device eliminates impact and noise during the operation of the plug drive trolley.

[0004] The technical solutions adopted in the present invention include: an electric device for a double-opening sliding door of a passenger car, comprising a track box fixed to the passenger car body, a sliding drive trolley installed in the track box, two sliding guide rails are relatively arranged at the lower parts of the left and right side panels of the track box, and a guide slideway for controlling the movement sequence of the passenger car door is arranged in the middle part of the track box; the body of the sliding drive trolley is composed of left and right car body end plates, a top crossbeam, and a bottom guide bar; the bottom guide bar is arranged at the front part of the car body, and its two ends are respectively fixedly connected to the lower parts of the left and right car body end plates; a transmission screw is arranged above the bottom guide bar, and a left-handed thread section is arranged on the left part of the transmission screw, and a right-handed thread section is arranged on the right part, a left-handed nut assembly is installed on the left-handed thread section, and a right-handed nut assembly is installed on the right-handed thread section. Nut assembly; the left part of the bottom guide bar is fitted on the left-carrying door frame, and the right part of the bottom guide bar is fitted on the right-carrying door frame, a fork mechanism is connected between the left-carrying door frame and the left-hand nut assembly, and another fork mechanism is connected between the right-carrying door frame and the right-hand nut assembly; the top of the left-carrying door frame is connected to the guide slideway through a sliding roller mechanism; a power input gear is provided on the left part of the transmission screw; a Serra driving device is provided on the Serra driving trolley, and the Serra driving device includes a driving motor and a planetary gear transmission, and a power output gear is provided on the planetary carrier output shaft in the planetary gear transmission, and the power output gear is connected to the power input gear in transmission; the sun gear input shaft in the planetary gear transmission is connected to the output shaft of the driving motor in transmission.

[0005] Furthermore, the fork mechanism includes a claw-shaped connecting piece and an axial position adjustment assembly; a rectangular platform is provided on the upper part of the claw-shaped connecting piece, four prisms are symmetrically provided at the four corners of the rectangular platform, and an adjustment lug is provided on the lower part of the claw-shaped connecting piece; the axial position adjustment assembly includes a threaded connection sleeve, a locking nut, and a connecting pin.

[0006] Furthermore, the left-carrying door frame and the right left-carrying door frame respectively include a bus door mounting plate, a guide bar sleeve, and a connecting bracket assembly; the guide bar sleeve is installed in a sliding fit with the bottom guide bar, and the connecting bracket assembly is an F-shaped structure, with a double-ear fork seat provided at the bottom; the claw-shaped connecting piece is installed on the double-ear fork seat through the threaded connecting sleeve and the connecting pin.

[0007] Furthermore, the sliding roller mechanism includes a horizontal roller and a vertical roller pin shaft. The vertical roller pin shaft is fixed to the top of the connecting bracket assembly on the left-portable door frame through a threaded structure, and the horizontal roller is installed on the top of the vertical roller pin shaft through a bearing.

[0008] Furthermore, the left-handed nut assembly and the right-handed nut assembly respectively include a quadrangular nut body, a left buffer gasket, and a right buffer gasket. A boss mechanism is provided in the middle section of the quadrangular nut body, and the left buffer gasket is mounted on one side of the boss mechanism, and the right buffer gasket is mounted on the other side.

[0009] Furthermore, a load-bearing hanging rail is provided in the middle of the track box, and a suspension slider is provided on the top of the Sierra driving trolley. The suspension slider is matched and installed together with the load-bearing hanging rail, and the load-bearing hanging rail is provided in parallel with the Sierra guide rail.

[0010] The present invention has the following beneficial effects:

[0011] 1. Since only one bottom guide bar and one transmission screw are provided on the Sierra driving trolley in the present invention, the left and right door frames are installed on the same bottom guide bar, thereby optimizing the driving structure and reducing the volume and weight of the Sierra driving trolley.

[0012] 2. Since the shift fork mechanism of the present invention adopts a claw-shaped connecting piece and an axial position adjustment component, there will be no jamming during the movement of the left and right masts.

[0013] 3. Since buffer washers are provided in the left-hand and right-hand nut assemblies of the present invention, the impact and noise during the operation of the Sierra drive trolley are eliminated.

[0014] 4. Since the load-bearing hanging rail is provided in the middle of the track box of the present invention, the main crossbeam of the Sierra drive trolley can be greatly reduced in weight, thereby reducing the dead weight of the Sierra drive trolley. Description of the drawings:

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0016] Figure 2 This is a schematic diagram of the track box structure in the present invention.

[0017] Figure 3 This is a schematic diagram of the structure of the Sierra drive trolley in the present invention.

[0018] Figure 4 This is a top view of the Sierra drive trolley in the present invention.

[0019] Figure 5 This is a schematic diagram of the body structure of the Sierra-driven trolley in the present invention.

[0020] Figure 6 It is a schematic diagram of the transmission screw structure in the present invention.

[0021] Figure 7 Schematic diagram of the structure of the connecting bracket assembly in the present invention. Specific implementation method:

[0022] The present invention will be further described below with reference to the accompanying drawings.

[0023] Example 1:

[0024] See attached Figure 1 , Attachment Figure 2 , Attachment Figure 3 As shown, the electric device for the double-opening sliding plug door of a passenger car of the present invention includes a track box 1 fixed to the passenger car body and a sliding plug driving trolley 2 installed in the track box. The lower parts of the left and right side panels of the track box are respectively provided with sliding plug rails 103 relative to each other. The middle part of the track box 1 is provided with a guide slide 106 for controlling the action sequence of the passenger car door 3. The guide slide 106 is arranged from left to right (according to the closing action sequence of the passenger car door). The body of the sliding plug driving trolley 2 is composed of two left and right car body end plates, a top crossbeam, and a bottom guide bar 214. The bottom guide bar 214 is provided at the front of the car body, and its two ends are respectively fixedly connected to the lower parts of the left and right car body end plates. A transmission screw 202 is provided above the bottom guide bar 214. The left part of the transmission screw is provided with a left-handed thread section, and the right part is provided with a right-handed thread section. A left-handed nut assembly 215 is installed on the left-handed thread section, and a right-handed nut assembly is installed on the right-handed thread section. The left portion of the bottom guide bar 214 is mounted on the left-hand carrying mast 212, while the right portion of the bottom guide bar 214 is mounted on the right-hand carrying mast. The left-hand carrying mast 212 is connected to the left-hand nut assembly via a shift fork mechanism 218, while the right-hand carrying mast is connected to the right-hand nut assembly via another shift fork mechanism. The top of the left-hand carrying mast (or right-hand carrying mast) is connected to the guide slideway via a sliding roller mechanism. A power input gear is provided on the left portion of the transmission screw 202. A Serra drive device is provided on the Serra drive trolley 2. The Serra drive device includes a drive motor 203 and a planetary gear transmission 206. A power output gear is provided on the planetary carrier output shaft of the planetary gear transmission 206. The power output gear is connected to the power input gear. The sun gear input shaft of the planetary gear transmission 206 is connected to the output shaft of the drive motor 203.

[0025] See attached Figure 1 and attached Figure 2 (The figure shows the inner side of the passenger car door), in this embodiment, the track box 1 includes a main beam 101, a left side plate 102, and a right side plate (symmetrically arranged with the left side plate), and the left and right Sierra guide rails 103 are parallel to each other and arranged opposite to each other. The cross-section of the Sierra guide rails is C-shaped or [-shaped. Left and right pin shaft assemblies are respectively provided at the upper positions of the left and right side plates, that is, a left pin shaft assembly 104 is provided on the left side plate, and a right pin shaft assembly 1041 is provided on the right side plate. The cross-section of the guide slide 106 is n-shaped or ∩-shaped. The structure of the track box 1 belongs to the scope of the prior art and will not be described in detail here.

[0026] See attached Figure 3 , Attachment Figure 4 , Attachment Figure 5 (Attached Figure 3 Shown is a rear view of the Sierra drive carriage; attached Figure 4 It is attached Figure 3 As shown in the top view of FIG, in this embodiment, the body 201 of the Sierra driving trolley is composed of a left body end plate 2012, a right body end plate 2013, a top crossbeam 2011 and a bottom guide bar 214. The lower parts of the left and right body end plates are respectively provided with load-bearing wheels 210 and support seats 211. The load-bearing wheels 210 are matched and installed with the Sierra guide rails 103 in the track box 1. The bottom guide bar 214 is provided at the front of the body (see FIG. Figure 3 The rear part of the Serra driving trolley is shown), a transmission screw 202 is set above the bottom guide bar, and the two ends of the transmission screw are installed on the body of the Serra driving trolley through bearings 217. The left part of the transmission screw is provided with a left-handed thread section, and the right part of the transmission screw is provided with a right-handed thread section (or, the left part of the transmission screw is provided with a right-handed thread section, and the right part of the transmission screw is provided with a left-handed thread section). The top of the left-hand carrying door frame is connected to the guide slide through a sliding roller mechanism. Alternatively, the top of the right-hand carrying door frame is connected to the guide slide through a sliding roller mechanism. At this time, (according to the order of closing the passenger door) the guide slide is set from right to left.

[0027] The Serra drive trolley is provided with a Serra drive device. A Serra driving shaft 207 is provided on the upper part of the body 201 of the Serra driving trolley. A sector-shaped large gear 205 is provided on the left part of the Serra driving shaft. The left and right ends of the Serra driving shaft extend out of the left and right body end plates. A left crank 208 is installed on the left end of the Serra driving shaft. The other end of the left crank is hinged to a left connecting rod 209. The other end of the left connecting rod is installed on the left side plate end of the track box through the left pin assembly 104. Symmetrically, a right crank is installed on the right end of the Serra driving shaft 207. The other end of the right crank is hinged to a right connecting rod. The other end of the right connecting rod is installed on the right side plate end of the track box 1 through the right pin assembly 1041. The pins of the left and right pin assemblies lie on the same horizontal axis, which is parallel to the Sierra drive shaft 207. A drive motor 203 and a planetary gear transmission 206 are located at the rear of the Sierra drive vehicle. The planetary gear transmission 206 is positioned below the Sierra drive shaft 207. A power output gear is mounted on the planetary carrier output shaft of the planetary gear transmission 206, which is in transmission connection with the power input gear on the drive screw 202. The sun gear input shaft of the planetary gear transmission 206 is in transmission connection with the output shaft of the drive motor 203. A Sierra output transition piece is mounted on the inner ring gear of the planetary gear transmission. A Sierra pinion 204 is mounted on one end of the Sierra output transition piece, which is in transmission connection with the fan-shaped Sierra gear. A large-diameter connecting disc is mounted on the other end of the Sierra output transition piece, which has a hollow shaft section in the center. The sun gear input shaft passes through this hollow shaft section and connects to the output shaft of the drive motor. The structure of the Sierra drive device falls within the scope of the prior art and will not be described in detail here.

[0028] See attached Figure 6 In this embodiment, the shift fork mechanism includes a claw-shaped coupling 218 and an axial position adjustment assembly. A rectangular platform is provided on the upper portion of the claw-shaped coupling 218, with four prisms 2181 symmetrically arranged at the four corners of the rectangular platform. An adjustment lug 2182 is provided on the lower portion of the claw-shaped coupling 218. The axial position adjustment assembly includes a threaded sleeve 220, a locking nut 221, and a connecting pin 222. The claw-shaped coupling 218 is mounted to the quadrangular prism nut bodies in the left-hand nut assembly and the right-hand nut assembly. This unique connection method ensures that the rotation of the drive screw 202 and the linear movement of the quadrangular prism nut bodies are not interfered with by the curved movement trajectory of the left-hand (or right-hand) mast. Furthermore, the linear movement of the right-hand and left-hand masts on the bottom guide bar is also not interfered with by the drive screw, ensuring that the left-hand and right-left masts do not jam during movement.

[0029] In this embodiment, the left-carrying door frame and the right-carrying door frame respectively include a bus door mounting plate 2121, a guide bar sleeve 213, and a connecting bracket assembly 219; the guide bar sleeve 213 is slidably mounted with the bottom guide bar 214, and the connecting bracket assembly 219 is an F-shaped structure or a connecting bracket assembly is a '-shaped structure (see the attached Figure 7 ), with a mounting bracket 232 located on its upper portion and a double-eared fork seat 230 at its lower portion. Mounting bracket 232 is secured to guide rod sleeve 213. A claw connector is mounted on double-eared fork seat 230 via a threaded sleeve 220, a connecting pin 222, and a retaining ring 223. Adjustment lugs 2182 on the lower portion of claw connector 218 provide through-holes through which threaded sleeve 220 is inserted. Both ends of threaded sleeve 220 are secured to double-eared fork seat 230. Connecting pins 222 secure the threaded sleeve 220 and double-eared fork seat 230 together. Double-eared fork seat 230 has pin holes on either side, into which sleeves 229 are mounted. Retaining ring 223 fits within a slot on connecting pin 222. This unique connection prevents transmission resistance between the left-hand (or right-hand) mast and the fork mechanism. An adjustment nut 221 is provided on the threaded connection sleeve 220 to adjust the position of the bus door panel. This unique connection method allows the left and right door frames to move freely following the left and right nut assemblies, enabling self-adjustment and eliminating resistance during movement.

[0030] In order to improve the smoothness of the movement of the Serra drive trolley, the sliding roller mechanism includes a horizontal roller 231 and a vertical roller pin 2311. The vertical roller pin is fixed to the top of the connecting bracket assembly on the left porthole (i.e., the mounting frame 232) through a threaded structure, and the horizontal roller 231 is installed on the top of the vertical roller pin 2311.

[0031] In order to eliminate the impact and noise during the operation of the Serra drive trolley, the left-handed nut assembly and the right-handed nut assembly respectively include a quadrangular nut body, a left buffer gasket 216, and a right buffer gasket 2161. The middle section of the quadrangular nut body is provided with a boss mechanism 2151, and the boss mechanism 2151 is provided with a left buffer gasket on one side and a right buffer gasket on the other side.

[0032] The description of left or right, the description of the left part or right part, and the description of the left part or right part setting of the technical features in the present invention is merely a description of an embodiment and can be interchanged according to specific design requirements; it should not be understood as the only limitation on the scope of protection of the present invention.

[0033] Example 2:

[0034] This embodiment is an improvement based on the first embodiment. For the same contents in this embodiment as those in the first embodiment, please refer to the contents disclosed in the first embodiment for understanding, and no repeated description is made here; the contents disclosed in the first embodiment should also be regarded as the contents disclosed in this embodiment.

[0035] See attached Figure 1 , Attachment Figure 2In this embodiment, in order to reduce the deadweight of the Sierra driving trolley and prevent the left and right left-carrying door frames from getting stuck during movement, a load-bearing hanging rail 105 is set in the middle of the track box 1, and a suspension slider is set on the top of the Sierra driving trolley. The suspension slider is matched and installed together with the load-bearing hanging rail 105, and the load-bearing hanging rail 105 is set parallel to the Sierra guide rail 103.

[0036] The above description is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements can be made without departing from the principles of the present invention. These improvements should also be regarded as the scope of protection of the present invention.

Claims

1. An electric device for a passenger car double-side plug-sliding door, comprising a track box (1) fixed to the passenger car body, a plug-sliding driving trolley (2) installed in the track box, two plug-sliding guide rails (103) arranged opposite to each other at the lower portions of the left and right side panels of the track box, and a guide slideway (106) for controlling the movement sequence of the passenger car door arranged in the middle portion of the track box; characterized in that: The body of the Sierra driving trolley (2) is composed of two left and right body end plates, a top crossbeam, and a bottom guide bar (214); the bottom guide bar (214) is arranged at the front of the body, and its two ends are fixedly connected to the lower parts of the left and right body end plates respectively; a transmission screw (202) is arranged above the bottom guide bar (214), and the left part of the transmission screw (202) is provided with a left-handed thread section, and the right part is provided with a right-handed thread section, and a left-handed nut assembly (215) is installed on the left-handed thread section, and a right-handed nut assembly is installed on the right-handed thread section; the left part of the bottom guide bar (214) is covered with a left-handed door frame (212), and the right part of the bottom guide bar (214) is covered with a right-handed door frame, and the left A shift fork mechanism is connected between the door frame and the left-hand nut assembly (215), and another shift fork mechanism is connected between the right door frame and the right-hand nut assembly; the top of the left door frame is connected to the guide slideway through a sliding roller mechanism; a power input gear is provided on the left portion of the transmission screw (202); a Serra driving device is provided on the Serra driving trolley (2), and the Serra driving device includes a driving motor and a planetary gear transmission (206); a power output gear is provided on the planetary frame output shaft in the planetary gear transmission, and the power output gear is in transmission connection with the power input gear; the sun gear input shaft in the planetary gear transmission is in transmission connection with the output shaft of the driving motor; The shift fork mechanism comprises a claw-shaped connecting piece (218) and an axial position adjustment assembly; a rectangular platform is provided on the upper portion of the claw-shaped connecting piece (218), four prisms are symmetrically provided at the four corners of the rectangular platform, and an adjustment lug (2182) is provided on the lower portion of the claw-shaped connecting piece (218); the axial position adjustment assembly comprises a threaded connection sleeve (220), a locking nut (221), and a connecting pin (222); The left-hand carrying door frame and the right-hand left-hand carrying door frame respectively comprise a passenger door mounting plate (2121), a guide bar sleeve (213), and a connecting bracket assembly (219); the guide bar sleeve (213) is slidably mounted on the bottom guide bar (214); the connecting bracket assembly (219) is F-shaped, and a double-eared fork seat (230) is provided at the bottom thereof; the claw-shaped connecting piece (218) is mounted on the double-eared fork seat (230) via the threaded connecting sleeve (220) and the connecting pin shaft (222).

2. The electric device for a passenger car double-side sliding door according to claim 1, characterized in that: The sliding roller mechanism comprises a horizontal roller (231) and a vertical roller pin (2311). The vertical roller pin (2311) is fixed to the top of the connecting bracket assembly (219) on the left-portable door frame through a threaded structure, and the horizontal roller (231) is installed on the top of the vertical roller pin (2311) through a bearing.

3. The electric device for a passenger car double-side sliding door according to claim 2, characterized in that: The left-handed nut assembly and the right-handed nut assembly respectively comprise a quadrangular prism-shaped nut body, a left buffer washer (216), and a right buffer washer (2161). A boss mechanism is provided in the middle section of the quadrangular prism-shaped nut body. The left buffer washer (216) is fitted on one side of the boss mechanism, and the right buffer washer (2161) is fitted on the other side of the boss mechanism.

4. The electric device for a passenger car double-side sliding door according to claim 3, characterized in that: A load-bearing hanging rail (105) is provided in the middle of the track box (1), and a suspension slider is provided on the top of the Sierra driving trolley. The suspension slider is matched and installed with the load-bearing hanging rail (105), and the load-bearing hanging rail (105) is provided in parallel with the Sierra guide rail (103).

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