Evacuation door clutch device

Abstract

The emergency door clutch device comprises a driving gear used for being connected with an output shaft of a gear motor, the driving gear comprises an end face fluted disc and a sleeve capable of being arranged in the output shaft of the gear motor in a sleeved mode, a through hole for a transmission shaft to penetrate through is formed in the center of the end face fluted disc, and the outer wall of the sleeve is used for being connected with a key groove of the output shaft of the gear motor. The sleeve is inserted into the gear motor output shaft and located between the gear motor output shaft and the recovery disc transmission shaft, the transmission shaft penetrates through the driving gear to be connected with the recovery discs on the left side and the right side, the driven gear is arranged on the transmission shaft and meshed with the driving gear, and synchronous rotation of the left recovery disc and the right recovery disc can be achieved. A locking device is additionally arranged on the driven gear side, stable meshing of the driving gear and the driven gear is guaranteed, and reliability is high.

Description

Technical Field

[0001] The invention relates to an evacuation door transmission device, in particular to an evacuation door clutch device. Background Art

[0002] Rail trains need to be equipped with evacuation doors / evacuation ramps. When the evacuation door is retracted, the rope connected to the evacuation door is reeled in by the recovery disk, and vice versa, the evacuation door is lowered. The drive shaft of the recovery disk is connected to the output shaft of the reduction motor, and the driving force is provided by the reduction motor. The reduction motor is a worm gear structure with a self-locking function. When the evacuation door is lowered and unfolded, the drive shaft needs to be disengaged from the output shaft of the reduction motor. Therefore, a clutch device needs to be set between the reduction motor and the drive shaft to achieve the above function.

[0003] The invention patent application with publication number CN 117508249 A discloses an electric recovery mechanism that cooperates with a full-width emergency safety device. By setting a ring-type driving gear on the output shaft of the reduction motor, the recovery disk transmission shaft is slidably connected to the driven gear, and the driven gear is inserted into the driving gear and separated to achieve clutch. In this scheme, the clutch device can only be set at the end of the transmission shaft extending out of the recovery disk. If clutching is to be achieved between the recovery disks, two sets of clutch devices are required. In addition, the clutch mechanism of this scheme does not have a locking function, and the meshing transmission safety of the driving gear and the driven gear is low. Summary of the invention

[0004] Purpose of the invention: The purpose of the present invention is to provide a clutch device for an evacuation door which is small in size and suitable for transmitting the driving force of a reduction motor between recovery plates.

[0005] Technical solution: The evacuation door clutch device described in the present invention includes a driving gear connected to the output shaft of the reduction motor, the driving gear includes an end gear plate and a sleeve that can be inserted into the output shaft of the reduction motor, a through hole is provided in the center of the end gear plate for the transmission shaft to pass through, and the outer wall of the sleeve is used for a keyway connected to the output shaft of the reduction motor.

[0006] The sleeve is inserted into the output shaft of the reduction motor and is located between the output shaft of the reduction motor and the drive shaft of the recovery disk. The drive shaft passes through the driving gear to connect the recovery disks on the left and right sides. A driven gear is arranged on the drive shaft. The driven gear meshes with the driving gear to realize the synchronous rotation of the left and right recovery disks.

[0007] Preferably, it also includes a driven gear and a lever that drives the driven gear to slide along the transmission shaft. The driven gear is an end face toothed disc. An annular groove is provided on the outer periphery of the driven gear. The lever is clamped on the outer periphery of the driven gear through the annular groove.

[0008] Preferably, the lever is a frame-type lever, the top of the lever is hinged to a mounting block connected to the vehicle body, and the lever rotates around the mounting block to drive the driven gear to slide along the transmission shaft.

[0009] Preferably, in order to reduce transmission resistance, rollers are provided on both sides of the lever, and the rollers extend into the annular groove. The lever drives the driven gear to slide along the transmission shaft through the rollers and the annular groove.

[0010] In order to ensure that the driving gear and the driven gear are closely meshed during the transmission process and avoid the driven gear from sliding along the transmission shaft due to vibration, preferably, a locking mechanism is also included, the locking mechanism includes a cam and a stop hook, the protruding part of the cam is connected to the bottom of the lever, the rotating cam drives the lever to swing, the side wall of the circular part of the cam is provided with a notch, and a stop hook is provided outside the cam, when the driven gear and the driving gear are meshed, the stop hook is stuck in the notch of the cam, and the rotation of the cam is restricted.

[0011] Preferably, in order to save effort, the axis of the cam is perpendicular to the axis of the driven gear, and the cam is connected to the shifting rod through a rod end joint and a pull rod. The rod end joint is located at the end of the pull rod.

[0012] Preferably, in order to achieve unlocking in one step during the clutch and clutch process, a differential plate is provided under the cam, and a groove is provided on the side wall of the differential plate. When the retaining hook is inserted into the notch of the cam, it enters the groove at the same time. Both ends of the groove are inclined surfaces. When the differential plate is rotated, the retaining hook slides along the inclined surface to leave the notch of the cam. A short pin is provided on the differential plate. When the retaining hook leaves the notch, the short pin drives the cam to rotate.

[0013] Preferably, a short pin is provided on the top of the differential plate, and an arc-shaped hole for accommodating the short pin is provided on the cam. When the retaining hook slides along the inclined surface to leave the notch of the cam, the short pin abuts against one end of the arc-shaped hole, driving the cam to rotate.

[0014] Preferably, when the evacuation door is released, in order to ensure that the driven gear always leaves the driving gear, the cam is symmetrically provided with notches on the left and right sides of the outer periphery, and the cam is symmetrically provided with blocking hooks on the left and right sides, and the distance between the notches is smaller than the distance between the blocking hooks.

[0015] Preferably, it further comprises a bracket, the cam and the blocking hook are rotatably connected to the bracket, and a torsion spring is provided between the blocking hook and the bracket.

[0016] Preferably, the differential disc is connected with a handle.

[0017] Beneficial effects: Compared with the prior art, the present invention has the following significant advantages: 1. Small size, simultaneous transmission on both sides: the driving gear is located between the reduction motor and the transmission shaft, the required installation space is greatly reduced, the transmission shaft passes through the clutch device, and the clutch device can be used to achieve transmission on both sides; 2. Stable engagement and disengagement, high safety: by rotating the two-way differential locking device, the clutch device connecting rod can be driven to move, so that the end teeth are separated and engaged; at the same time, due to the two-way differential locking function, the clutch device connecting rod does not produce passive displacement, so that the end teeth are separated and engaged stably.firm , realizing the locking end tooth meshing transmission and separation state stabilization function; 3. Labor-saving and fast: converting the rotational motion of the two-way differential lock into linear reciprocating motion, so that the meshing or separation transmission of the operating end gear disc and the end gear sleeve can be realized. The lever structure is used to save labor. The end face gear disc has multiple straight teeth, the meshing and separation stroke is small, and the action is completed quickly; 4. Large load-bearing capacity and strong reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the structure of the clutch device of the present invention in an unlocked state;

[0019] Figure 2 It is a schematic diagram of the overall lever structure of the present invention;

[0020] Figure 3 It is a schematic diagram of the locking mechanism structure of the present invention;

[0021] Figure 4 It is a schematic diagram of the differential disk structure of the present invention;

[0022] Figure 5 It is a schematic diagram of the cam structure of the present invention;

[0023] Figure 6 It is a schematic structural diagram of the clutch device of the present invention in a locked state;

[0024] Figure 7 It is a top view of the locking mechanism of the present invention. DETAILED DESCRIPTION

[0025] The technical solution of the present invention is further described below in conjunction with the accompanying drawings.

[0026] like Figure 1 The clutch device of the evacuation door is mainly composed of a driving gear 5 and a driven gear 3. The driving gear 5 is mainly composed of an end face toothed disc and a sleeve. The sleeve is used to be sleeved in the output shaft of the reduction motor, and the middle part is for the transmission shaft 4 to pass through. The outer wall of the sleeve is provided with a keyway for connecting with the output shaft of the reduction motor, so that the driving gear 5 can move synchronously with the output shaft of the reduction motor. The end face toothed disc is located at one end of the sleeve, and a through hole is set in the center for the transmission shaft to pass through. An annular groove is provided on the outer wall of the end of the sleeve away from the end face toothed disc for installing a retaining ring, which limits the axial freedom of the sleeve in the output shaft of the reduction motor.

[0027] The driven gear 3 is a face gear disk, a key is provided in the hole of the driven gear 3, a groove for accommodating the key is provided on the outer surface of the transmission shaft 4, the key in the hole of the driven gear 3 is located in the groove of the transmission shaft 4, the driven gear 3 can slide axially along the transmission shaft 4, and can drive the transmission shaft 4 to rotate when rotating. An annular groove is provided on the outer periphery of the driven gear 3, and a lever 2 is provided on the outer periphery of the driven gear 3, the lever 2 is clamped on the outer periphery of the driven gear 3 through the annular groove, and the lever 2 is swung left and right, so that the driven gear 3 can slide axially along the transmission shaft 4, approaching / moving away from the driving gear 5, and the two are meshed or separated, realizing transmission or releasing transmission.

[0028] like Figure 2 The lever 2 is a frame-shaped structure 2-4. The lever 2 is surrounded by the end gear 3. The two side arms of the lever 2 are symmetrically provided with axles 2-6. The axles 2-6 extend into the annular groove of the end gear 3, so that the connecting rod 2-4 and the end gear 3 are connected. One end of the axle 2-6 extending into the annular groove has a supporting wheel 2-5, and the axle 2-6 is connected to the annular groove through the supporting wheel 2-5. The top of the lever 2 is hinged with a mounting block 2-8 through the shaft 2-7, and the mounting block 2-8 is used to connect with the vehicle body. The lever 2 swings around the mounting block 2-8, driving the driven gear 3 to slide axially along the transmission shaft 4.

[0029] like Figure 3 , Figure 4 , and also includes a locking mechanism 1, which is mainly composed of a cam 1-4 and a stop hook. The cam 1-4 has a protruding portion and a circular portion, and the protruding portion is connected to the bottom of the lever 2. Rotating the cam 1-4 can drive the lever 2 to swing left and right. A notch is provided on the side wall of the circular portion of the cam 1-4, and a stop hook is provided outside the cam. When the lever 2 drives the driven gear 3 and the end face gear of the driving gear 4 to engage, the stop hook is stuck in the notch of the cam 1-4, and the rotation of the cam 1-4 is restricted.

[0030] The notch is a semicircular notch, and the notch can be set only on one side of the circular part of the cam 1-4, or can be set symmetrically on the left and right. When the notch is set symmetrically on the left and right, there are two corresponding blocking hooks, namely the left blocking hook 1-5 and the right blocking hook 1-13. The distance between the left and right notches is smaller than the distance between the left blocking hook 1-5 and the right blocking hook 1-13, so that only one blocking hook can be inserted into the notch of the cam 1-4. When any one of the left blocking hook 1-5 and the right blocking hook 1-13 is inserted into the notch of the cam 1-4, the rotation of the cam 1-4 can be restricted.

[0031] The cam 1-4 and the blocking hook are both arranged on the bracket 1-8 and fixedly connected to the vehicle body through the bracket 1-8. The left blocking hook 1-5 and the right blocking hook 1-13 are rotatably connected through the left shaft 1-7, the right shaft 1-11 and the bracket 1-8 respectively. The left blocking hook 1-5 and the right blocking hook 1-13 are provided with a left torsion spring 1-6 and a right torsion spring 1-12. The torsion springs form a certain force between the left blocking hook 1-5, the right blocking hook 1-1 and the cam 1-4, so that the blocking hook can be stuck in the gap.

[0032] like Figure 1 The axis of the cam 1-4 is perpendicular to the axis of the driven gear 3, the cam 1-4 and the lever 2 are connected by the pull rod 2-2, and the cam and the pull rod 2-2 are connected by the rod end joint 2-1. As an adaptive self-aligning part, the rod end joint 2-1 can automatically adapt to the movement and reduce errors and motion stagnation.

[0033] like Figure 3 , Figure 5 A differential plate 1-3 is provided below the cam 1-4, aligned with the notch of the cam 1-4, and a groove is provided on the side wall of the differential plate 1-3. When the retaining hook is inserted into the notch of the cam 1-4, it enters the groove at the same time, ensuring that the rotation of the cam 1-4 is restricted. Both ends of the groove of the differential plate 1-3 are inclined surfaces. When the differential plate 1-3 is rotated, the retaining hook inserted into the notch of the cam 1-4 can slide along the inclined surface at the end of the groove, thereby being pushed away from the notch of the cam 1-4.

[0034] There is a differential pin 1-10 on the upper surface of the differential disk 1-3, and a corresponding arc-shaped hole is provided on the cam 1-4 to accommodate the differential pin 1-10. When the differential disk 1-3 rotates to push the blocking hook to leave the gap of the cam 1-4, the differential pin 1-10 slides in the arc-shaped hole, the blocking hook leaves the gap of the cam 1-4, and the short pin 1-4 abuts against one end of the arc-shaped hole, driving the cam 1-4 to rotate.

[0035] The center of the differential disc 1-3 has a polygonal connection hole, the periphery of the connection hole has a column, and the cam 1-4 is sleeved on the column of the differential disc 1-3. The differential disc 1-3 is driven to rotate by the handle 1-1, and the handle 1-1 is connected to the center connection hole of the differential disc 1-3 through the polygonal shaft 1-2.

[0036] When using, Figure 3 From the perspective, rotate the handle 1-1 counterclockwise, the shaft 1-2 drives the differential disk 1-3 and the differential pin 1-10 to rotate counterclockwise, and the differential pin 1-10 slides counterclockwise along the arc hole of the cam 1-4. The lower end slope of the groove on the right side of the differential disk 1-3 is close to the right block hook 1-13, pushing the end of the right block hook 1-13 to leave the gap, and the differential pin 1-10 abuts against the upper end of the through hole of the cam 1-4, driving the cam 1-4 to rotate counterclockwise, so that the pull rod 2-2 moves to the right, and the handle 1-1 continues to be turned, and the left block hook 1-5 is stuck in the gap on the left side of the cam 1-4, and the cam 1-4 is locked. At the same time, the driven gear 3 approaches the driving gear 5, and the two end face gear discs are meshed to form a stable transmission; when the transmission needs to be released, the operation is reversed to make the right block hook 1-13 fit into the gap on the right side of the cam 1-4 to keep the disengaged state.

[0037] The handle 1-1 can be replaced with other types of joints to achieve external remote operation.

Claims

1. An evacuation door clutch device, comprising a driving gear (5) for connecting to an output shaft of a reduction motor, characterized in that: The driving gear (5) comprises an end face toothed disc and a sleeve that can be inserted into the output shaft of the reduction motor. The center of the end face toothed disc is provided with a through hole for the transmission shaft to pass through, and the outer wall of the sleeve is provided with a keyway for connecting with the output shaft of the reduction motor.

2. The evacuation door clutch device according to claim 1, characterized in that: It also includes a driven gear (3) and a lever (2) that drives the driven gear (3) to slide along the transmission shaft. The driven gear (3) is an end face toothed disc. An annular groove is provided on the outer periphery of the driven gear (3). The lever (2) extends into the annular groove to be clamped on the outer periphery of the driven gear (3).

3. The evacuation door clutch device according to claim 2, characterized in that: The lever (2) is a frame-type lever (2-4); the top of the lever (3) is hingedly connected to a mounting block for connecting to a vehicle body; the lever (3) rotates around the mounting block, driving the driven gear (2-4) to slide along the transmission shaft.

4. The evacuation door clutch device according to claim 2, characterized in that: Rollers (2-3) are provided on both sides of the shifting rod (2), and the rollers extend into the annular grooves of the driven gear (3).

5. The evacuation door clutch device according to claim 2, characterized in that: The invention also comprises a cam (1-4) and a blocking hook. The protruding part of the cam (1-4) is connected to the bottom of the lever (2). The cam (1-4) is rotated to drive the lever (2) to swing. A notch is arranged on the side wall of the circular part of the cam (1-4). The blocking hook is arranged outside the cam (1-4). When the driven gear (3) and the driving gear (5) are meshed, the blocking hook is inserted into the notch of the cam (1-4), and the rotation of the cam (1-4) is restricted.

6. The evacuation door clutch device according to claim 5, characterized in that: The axis of the cam (1-4) is perpendicular to the axis of the driven gear (3), and the cam is connected to the shifting rod via a rod end joint (2-1) and a pull rod (2-2).

7. The evacuation door clutch device according to claim 5, characterized in that: A differential disk (1-3) is provided below the cam (1-4), and a groove is provided on the side wall of the differential disk (1-3). When the retaining hook is inserted into the notch of the cam (1-4), the retaining hook enters the groove at the same time. Both ends of the groove are inclined surfaces. When the differential disk (1-3) is rotated, the retaining hook can slide along the inclined surface to leave the notch of the cam (1-4). A short pin is provided on the differential disk (1-3). When the retaining hook leaves the notch, the short pin drives the cam to rotate.

8. The evacuation door clutch device according to claim 7, characterized in that: A short pin (1-10) is provided on the top of the differential disc (1-3), and an arc-shaped hole for accommodating the short pin is provided on the cam (1-4). When the retaining hook slides along the inclined surface and leaves the notch of the cam, the short pin (1-10) abuts against one end of the arc-shaped hole, driving the cam (1-4) to rotate.

9. The evacuation door clutch device according to claim 7, characterized in that: The outer periphery of the cam (1-4) is symmetrically provided with notches on the left and right sides, and the left and right sides outside the cam (1-4) are symmetrically provided with blocking hooks, and the distance between the notches is smaller than the distance between the blocking hooks.

10. The evacuation door clutch device according to claim 5, characterized in that: It also comprises a bracket (1-8), the cam (1-4) and the blocking hook are both rotatably connected to the bracket (1-8), and a torsion spring is provided between the blocking hook and the bracket (1-8).

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