Automatic telescopic shear fork device

Abstract

The invention relates to the field of train compartment connecting devices, and discloses an automatic telescopic shear fork device which comprises a bottom plate assembly, a spring bolt assembly, a driving assembly and a shear fork assembly. The spring bolt assembly comprises a spring bolt and a spring bolt gear motor. The spring bolt is used for locking the through passage folding shed; the driving assembly comprises a driving motor, a screw rod and a sliding seat; an output shaft of the driving motor is in transmission connection with the lead screw, the lead screw is in threaded connection with a sliding seat, and the rotary motion of the lead screw is converted into linear motion of the sliding seat in the length direction of the lead screw; the sliding seat is further connected with a scissor fork assembly, and the scissor fork assembly is driven by the sliding seat to stretch out or retract. The shear fork assembly stretches out or retracts back to drive the through channel folding shed to stretch out or retract back. All the assemblies are installed through the bottom plate assembly, the shear fork driving assembly provides power and achieves limiting at the same time, so that the through channel folding shed is driven to stretch out and draw back to a certain position, and the position of the through channel folding shed is fixed through the spring bolt assembly to achieve locking.

Description

Technical Field

[0001] The invention relates to the field of train carriage connection devices, and in particular to an automatic telescopic scissor-type device. Background Art

[0002] In the railway vehicle system, the train is composed of multiple carriages, and the connection structure between carriages plays a vital role. The connection structure must not only ensure the sealing of adjacent carriages and the passage of personnel, but also realize functions such as transmitting electrical signals and control signals. In the traditional train connection device, the connection channel between the two carriages cannot realize the control separation and closing, and the function is relatively simple. The new train connection device can realize the control separation and closing, automatically close the carriage door when separating, and automatically open the carriage door when closing, so that each carriage is independent of each other. However, during the operation of the train, it is difficult to realize the automatic separation and closing of the connection device, the connection reliability is low, and locking and limiting cannot be achieved.

[0003] There is an urgent need for a device for improving the telescopic connection of the connecting device-through-channel bellows for trains to solve the problems existing in the prior art. Summary of the invention

[0004] The object of the present invention is to provide an automatic telescopic scissor lift device, and its specific technical solution is as follows: An automatic telescopic scissor-fork device comprises a base plate assembly, a locking tongue assembly, a driving assembly and a scissor-fork assembly; The locking tongue assembly, the driving assembly and the scissor assembly are all arranged on the base plate assembly; The lock tongue assembly includes a lock tongue and a lock tongue reduction motor; the output shaft of the lock tongue reduction motor is transmission-connected with the lock tongue for driving the lock tongue to rotate; the lock tongue is used to lock the through passage bellows; The driving assembly includes a driving motor, a screw and a slide; the output shaft of the driving motor is connected to the screw for driving the screw to rotate; the screw is threadedly connected to the slide, and the rotational motion of the screw is converted into a linear motion of the slide along the length direction of the screw; the slide is also connected to the scissor assembly, and the scissor assembly is extended or retracted through the linear motion of the slide; One end of the scissor assembly is arranged on the driving assembly, and the other end is connected to the through-channel bellows. The extension or retraction of the scissor assembly drives the through-channel bellows to extend or retract.

[0005] Preferably, the base plate assembly includes a mounting base plate and a protective cover arranged on the mounting base plate; The mounting base plate is used to mount the locking tongue assembly, the driving assembly and the scissor assembly; The protective cover is arranged on the mounting base plate and covers the locking tongue assembly, the driving assembly and the scissor assembly.

[0006] Preferably, the locking tongue assembly further includes a reverse limit switch and a forward limit switch; The reverse limit switch and the forward limit switch are electrically connected to the lock tongue reduction motor. The forward limit switch is triggered when the lock tongue is forwardly rotated into position, and the reverse limit switch is triggered when the lock tongue is reversed into position, and the lock tongue reduction motor is controlled to stop.

[0007] Preferably, the lock tongue assembly further comprises a lock tongue nylon block, and the lock tongue nylon block abuts against the lock tongue.

[0008] Preferably, the driving assembly further comprises a connecting seat, a trigger plate, an extended-in-place limit switch and a retracted-in-place limit switch; The connecting seat is connected to the sliding seat, and a trigger plate is provided on the connecting seat. The sliding seat drives the connecting seat to move, and drives the trigger plate to move to a set position to trigger an extended limit switch and a retracted limit switch provided on the mounting bottom plate. The extended-in-place limit switch and the retracted-in-place limit switch are electrically connected to the drive motor and are used to stop the drive motor after being triggered.

[0009] Preferably, the driving assembly further comprises a wire displacement sensor, the wire end of which is connected to the connecting seat for measuring the moving distance of the connecting seat.

[0010] Preferably, the scissor assembly comprises a short connecting rod, an electromagnet, an electromagnet mounting seat, a scissor fixing seat and a plurality of groups of long connecting rods connected in sequence; The long connecting rod single piece includes two long connecting rods arranged crosswise with each other, and the middle parts of the two long connecting rods are hinged, and the long connecting rods of the adjacent long connecting rod single pieces are hinged; A short connecting rod is hinged on the long connecting rod of the single long connecting rod at the head end, and the short connecting rod is hinged on the scissor-fork fixing seat, and the scissor-fork fixing seat is fixedly arranged on the driving assembly; A short connecting rod is hinged on the long connecting rod of the single long connecting rod at the end, and the short connecting rod is hinged on the electromagnet mounting seat, and the electromagnet is also fixedly arranged on the electromagnet mounting seat.

[0011] Preferably, a latch is provided on the connecting seat; The latch is also connected to a middle hinge of a set of long connecting rods, and is used to drive the scissor assembly to extend or retract through the connecting seat.

[0012] Preferably, a drag chain mounting plate for mounting a drag chain is provided on the mounting base plate, and the drag chain is connected to the electromagnet and used for mounting a circuit connected to the electromagnet; The drag chain is placed in a drag chain protective cover, and the drag chain protective cover is used for the drag chain to move within a specified area.

[0013] Preferably, a reinforcing plate for increasing the strength of the protective cover is provided inside the protective cover.

[0014] The application of the technical solution of the present invention has the following beneficial effects: An automatic telescopic scissor fork device comprises a base plate assembly, a locking tongue assembly, a driving assembly and a scissor fork assembly; the locking tongue assembly, the driving assembly and the scissor fork assembly are all arranged on the base plate assembly; the locking tongue assembly comprises a locking tongue and a locking tongue reduction motor; the output shaft of the locking tongue reduction motor is transmission-connected with the locking tongue, used to drive the locking tongue to rotate; the locking tongue is used to lock the through-channel folding shed; the driving assembly comprises a driving motor, a screw rod and a sliding seat; the output shaft of the driving motor is transmission-connected with the screw rod, used to drive the screw rod to rotate; a sliding seat is threadedly connected to the screw rod, and the rotational motion of the screw rod is converted into linear motion of the sliding seat along the length direction of the screw rod; the sliding seat is also connected to the scissor fork assembly, and the scissor fork assembly is driven to extend or retract through the linear motion of the sliding seat; one end of the scissor fork assembly is arranged on the driving assembly, and the other end is connected to the through-channel folding shed, and the extension or retraction of the scissor fork assembly drives the through-channel folding shed to extend or retract. The present invention installs various components through the bottom plate component, and the scissor drive component provides power and realizes limiting at the same time, so that the through-channel bellows is driven to be extended and retracted to a certain position by the scissor component, and its position is fixed by the lock tongue component to realize locking.

[0015] In addition to the above-described purposes, features and advantages, the present invention has other purposes, features and advantages. The present invention will be further described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings: Figure 1 It is a structural schematic diagram of an automatic telescopic scissors device of the present invention in an extended state; Figure 2 yes Figure 1 A schematic diagram of the structure of the midsole plate assembly; Figure 3 yes Figure 1 A schematic diagram of the structure of the bolt assembly; Figure 4 yes Figure 1 Schematic diagram of the structure of the middle drive assembly; Figure 5 yes Figure 1 Schematic diagram of the structure of the middle scissor assembly; Figure 6 is a control principle diagram of the extension action of the automatic telescopic scissors device in the embodiment; Figure 7is a control principle diagram of the retracting action of the automatic telescopic scissors device in the embodiment; In the figure: 1. Base plate assembly, 1.1. Install base plate, 1.2. Protective cover; 2. Lock tongue assembly, 2.1. Lock tongue, 2.2. Lock tongue reduction motor, 2.3. Reverse limit switch, 2.4. Forward limit switch, 2.5. Lock tongue nylon block; 3. Driving assembly, 3.1. Driving motor, 3.2. Screw rod, 3.3. Connecting seat, 3.4. Trigger plate, 3.5. Drag chain protection cover, 3.6. Extended position limit switch, 3.7. Sliding seat, 3.8. Retracted position limit switch, 3.9. Pull wire displacement sensor; 4. Scissor fork assembly, 4.1. Long connecting rod, 4.2. Short connecting rod, 4.3. Electromagnet, 4.4. Electromagnet mounting seat, 4.5. Scissor fork fixing seat, 4.6. Pin. DETAILED DESCRIPTION

[0017] The embodiments of the present invention are described in detail below with reference to the accompanying drawings, but the present invention can be implemented in many different ways as defined and covered by the claims.

[0018] refer to Figure 1 An automatic telescopic scissor fork device comprises a base plate assembly 1, a locking tongue assembly 2, a driving assembly 3 and a scissor fork assembly 4; the locking tongue assembly 2, the driving assembly 3 and the scissor fork assembly 4 are all arranged on the base plate assembly 1; the locking tongue assembly 2 comprises a locking tongue 2.1 and a locking tongue reduction motor 2.2; the output shaft of the locking tongue reduction motor 2.2 is transmission-connected with the locking tongue 2.1, and is used to drive the locking tongue 2.1 to rotate; the locking tongue 2.1 is used to lock the through-channel bellows after the through-channel bellows is extended or retracted; the driving assembly 3 comprises a driving motor 3.1, a screw rod 3.2 and a slide seat 3.7; The output shaft of the driving motor 3.1 is transmission-connected with the screw rod 3.2, and is used to drive the screw rod 3.2 to rotate; a slide 3.7 is threadedly connected to the screw rod 3.2, and the rotational motion of the slide 3.7 is converted into a linear motion of the slide 3.7 along the length direction of the screw rod 3.2; the slide 3.7 is also connected to the scissor-fork assembly 4, and the linear motion of the slide 3.7 drives the scissor-fork assembly 4 to extend or retract; one end of the scissor-fork assembly 4 is arranged on the driving assembly 3, and the other end is connected to the through-channel bellows, and the extension or retraction of the scissor-fork assembly 4 drives the through-channel bellows to extend or retract.

[0019] The automatic telescopic scissor device of this embodiment drives the extension and retraction of the connecting device, i.e., the gangway bellows, by introducing an automated telescopic device, so as to achieve the purpose of automatically controlling the separation and closing of the connecting device. It can not only reduce the labor intensity of the operator and improve the connection efficiency, but also install various components through the bottom plate component, and the scissor drive component provides power while realizing the limit, so that the gangway bellows is driven to extend and retract to a certain position through the scissor component, and its position is fixed by the lock tongue component to realize locking, and the accuracy of the connection can be ensured, so as to comprehensively improve the quality and reliability of the connecting device.

[0020] refer to Figure 2 The base plate assembly 1 includes a mounting base plate 1.1 and a protective cover 1.2 disposed on the mounting base plate 1.1; the mounting base plate 1.1 is used to mount the locking tongue assembly 2, the driving assembly 3 and the scissor assembly 4; the protective cover 1.2 is disposed on the mounting base plate 1.1 and covers the locking tongue assembly 2, the driving assembly 3 and the scissor assembly 4. By providing the mounting base plate, the components are integrated together, the volume of the device is reduced, and installation and disassembly are facilitated. The protective cover protects the components while reducing dust and increasing the service life of the device.

[0021] refer to Figure 3 The bolt assembly 2 further includes a reverse limit switch 2.3 and a forward limit switch 2.4; the reverse limit switch 2.3 and the forward limit switch 2.4 are electrically connected to the bolt reduction motor 2.2, and the bolt 2.1 triggers the forward limit switch 2.4 after the forward rotation is in place, and the reverse limit switch 2.3 is triggered after the bolt 2.1 is reversed in place, and the bolt reduction motor 2.2 is controlled to stop. The bolt assembly 2 further includes a bolt nylon block 2.5, and the bolt nylon block 2.5 abuts against the bolt 2.1.

[0022] The above-mentioned forward limit switch and reverse limit switch, in conjunction with the lock tongue reduction motor, can realize automatic locking and unlocking of the lock tongue, making it more convenient to use. The lock tongue nylon block is connected to the lower end of the lock tongue with a groove, and the lock tongue nylon block is chamfered to reduce the wear of the lock tongue and protect the folding shed of the through passage.

[0023] refer to Figure 4The driving assembly 3 also includes a connecting seat 3.3, a trigger plate 3.4, an extended position limit switch 3.6 and a retracted position limit switch 3.8; the connecting seat 3.3 is connected to a slide seat 3.7, and a trigger plate 3.4 is provided on the connecting seat 3.3, which drives the connecting seat 3.3 to move through the slide seat 3.7, and drives the trigger plate 3.4 to move to a set position, and then triggers the extended position limit switch 3.6 and the retracted position limit switch 3.8 set on the mounting base 1.1; the extended position limit switch 3.6 and the retracted position limit switch 3.8 are electrically connected to the driving motor 3.1, and are used to stop the driving motor 3.1 after being triggered. The driving assembly 3 also includes a wire displacement sensor 3.9, the wire end of which is connected to the connecting seat 3.3, and is used to measure the moving distance of the connecting seat 3.3.

[0024] Through the above settings, the connecting seat moves with the sliding seat and drives the scissors fork to extend and retract, and the limit switch is used to limit the position of the scissors fork to extend and retract, thereby achieving precise telescopic control of the through-channel, and the wire displacement sensor further controls the telescopic distance.

[0025] refer to Figure 5 The scissors-fork assembly 4 includes a short connecting rod 4.2, an electromagnet 4.3, an electromagnet mounting seat 4.4, a scissors-fork fixing seat 4.5 and a plurality of groups of long connecting rod single pieces connected in sequence; the long connecting rod single piece includes two long connecting rods 4.1 arranged crosswise with each other, and the middle parts of the two long connecting rods 4.1 are hinged, and the long connecting rods 4.1 of adjacent long connecting rod single pieces are hinged; a short connecting rod 4.2 is hinged on the long connecting rod 4.1 of the long connecting rod single piece at the head end, and the short connecting rod 4.2 is hinged on the scissors-fork fixing seat 4.5, and the scissors-fork fixing seat 4.5 is fixedly arranged on the driving assembly 3; a short connecting rod 4.2 is hinged on the long connecting rod 4.1 of the long connecting rod single piece at the end, and the short connecting rod 4.2 is hinged on the electromagnet mounting seat 4.4, and the electromagnet 4.3 is also fixedly arranged on the electromagnet mounting seat 4.4.

[0026] In this embodiment, the through-channel is attracted by the electromagnet to drive the through-channel to extend and retract, which is convenient and quick.

[0027] The connection seat 3.3 is provided with a latch 4.6; the latch 4.6 is also connected to the middle hinge of a group of long connecting rods, and is used to drive the scissor assembly 4 to extend or retract through the connection seat 3.3. The installation base 1.1 is provided with a drag chain installation plate for installing a drag chain, and the drag chain is connected to the electromagnet 4.3 and is used to install the line connected to the electromagnet 4.3; the drag chain is placed in a drag chain protective cover 3.5, and the drag chain protective cover 3.5 is used to move the drag chain within a specified area. In the process of the scissor drive electromagnet to absorb the through-channel through the drag chain, the wires of the electromagnet are stored to avoid entanglement and wear, thereby extending the service life.

[0028] A reinforcing plate is arranged inside the protective cover 1.2 to increase the strength of the protective cover 1.2.

[0029] The automatic closing or separation operation of the train carriage passage device by the automatic telescopic scissors device of this embodiment is as follows: 1.Reference Figure 6 When the gangway needs to be extended and closed, the electric control switch is switched to the automatic closing mode, the bolt motor reverses, and when the bolt contacts the reverse limit switch, the bolt motor stops, and the bolt lock is released. The electromagnet absorbs the gangway, and the scissor drive motor rotates forward to drive the screw rod. The slide seat on the screw rod slides along the direction of the screw rod, driving the scissor fork to extend, so that the electromagnet absorbs the gangway and pushes it out. When the trigger plate on the connecting plate contacts the extended limit switch, the scissor drive motor stops, and the gangway is closed.

[0030] 2.Reference Figure 7 When the gangway needs to be retracted and separated, the electric control switch is switched to the automatic separation mode, the scissor drive motor reverses to drive the screw rod, the upper slide of the screw rod is retracted along the screw rod direction, driving the scissors to retract, and the electromagnet absorbs the gangway to pull it back. When the trigger plate triggers the retraction limit switch during the retraction process, the gangway is retracted into place and the scissor drive motor stops. At the same time, the bolt motor rotates forward. When the bolt triggers the forward limit switch, the bolt motor stops to complete the bolt locking the gangway. At this time, the gangway is retracted and separated.

[0031] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An automatic telescopic scissor device, characterized in that: It comprises a base plate assembly (1), a locking tongue assembly (2), a driving assembly (3) and a scissor assembly (4); The locking tongue assembly (2), the driving assembly (3) and the scissor assembly (4) are all arranged on the base plate assembly (1); The lock tongue assembly (2) comprises a lock tongue (2.1) and a lock tongue reduction motor (2.2); an output shaft of the lock tongue reduction motor (2.2) is drivingly connected to the lock tongue (2.1) and is used to drive the lock tongue (2.1) to rotate; the lock tongue (2.1) is used to lock the through passage bellows; The drive assembly (3) comprises a drive motor (3.1), a screw rod (3.2) and a slide seat (3.7); the output shaft of the drive motor (3.1) is drivingly connected to the screw rod (3.2) for driving the screw rod (3.2) to rotate; the slide seat (3.7) is threadedly connected to the screw rod (3.2), and the rotational motion of the screw rod (3.2) is converted into linear motion of the slide seat (3.7) along the length direction of the screw rod (3.2); the slide seat (3.7) is also connected to the scissor assembly (4), and the linear motion of the slide seat (3.7) drives the scissor assembly (4) to extend or retract; One end of the scissor assembly (4) is arranged on the driving assembly (3), and the other end is connected to the through-passage bellows. The extension or retraction of the scissor assembly (4) drives the through-passage bellows to extend or retract.

2. The automatic telescopic scissors device according to claim 1, characterized in that: The base plate assembly (1) comprises a mounting base plate (1.1) and a protective cover (1.2) arranged on the mounting base plate (1.1); The mounting base plate (1.1) is used to mount the locking tongue assembly (2), the driving assembly (3) and the scissor assembly (4); The protective cover (1.2) is arranged on the mounting base plate (1.1) and covers the locking tongue assembly (2), the driving assembly (3) and the scissor assembly (4).

3. The automatic telescopic scissors device according to claim 2, characterized in that: The locking tongue assembly (2) further comprises a reverse limit switch (2.3) and a forward limit switch (2.4); The reverse limit switch (2.3) and the forward limit switch (2.4) are electrically connected to the bolt reduction motor (2.2); the forward limit switch (2.4) is triggered when the bolt (2.1) is in forward rotation; and the reverse limit switch (2.3) is triggered when the bolt (2.1) is in reverse rotation, and the bolt reduction motor (2.2) is controlled to stop.

4. The automatic telescopic scissors device according to claim 3, characterized in that: The lock tongue assembly (2) further comprises a lock tongue nylon block (2.5), wherein the lock tongue nylon block (2.5) abuts against the lock tongue (2.1).

5. The automatic telescopic scissors device according to claim 2, characterized in that: The driving assembly (3) further comprises a connecting seat (3.3), a trigger plate (3.4), an extended position limit switch (3.6) and a retracted position limit switch (3.8); The connecting seat (3.3) is connected to the sliding seat (3.7), and a trigger plate (3.4) is provided on the connecting seat (3.3). The sliding seat (3.7) drives the connecting seat (3.3) to move, and drives the trigger plate (3.4) to move to a set position, thereby triggering an extended limit switch (3.6) and a retracted limit switch (3.8) provided on the mounting base plate (1.1); The extended-in-place limit switch (3.6) and the retracted-in-place limit switch (3.8) are electrically connected to the drive motor (3.1) and are used to stop the drive motor (3.1) after being triggered.

6. The automatic telescopic scissors device according to claim 5, characterized in that: The driving assembly (3) further comprises a wire displacement sensor (3.9), wherein the wire end of the wire displacement sensor (3.9) is connected to the connecting seat (3.3) and is used to measure the moving distance of the connecting seat (3.3).

7. The automatic telescopic scissors device according to claim 5, characterized in that: The scissor-fork assembly (4) comprises a short connecting rod (4.2), an electromagnet (4.3), an electromagnet mounting seat (4.4), a scissor-fork fixing seat (4.5), and a plurality of groups of long connecting rod single pieces connected in sequence; The long connecting rod single piece comprises two long connecting rods (4.1) arranged crosswise with each other, the middle parts of the two long connecting rods (4.1) are hinged, and the long connecting rods (4.1) of adjacent long connecting rod single pieces are hinged; A short connecting rod (4.2) is hingedly connected to a long connecting rod (4.1) of a single long connecting rod at the head end, and the short connecting rod (4.2) is hingedly connected to a scissor-fork fixing seat (4.5), and the scissor-fork fixing seat (4.5) is fixedly arranged on the driving assembly (3); A short connecting rod (4.2) is hingedly connected to a long connecting rod (4.1) of a single long connecting rod at the end, and the short connecting rod (4.2) is hingedly connected to an electromagnet mounting seat (4.4), and an electromagnet (4.3) is also fixedly arranged on the electromagnet mounting seat (4.4).

8. The automatic telescopic scissors device according to claim 7, characterized in that: The connecting seat (3.3) is provided with a latch (4.6); The latch pin (4.6) is also connected to a middle hinge of a set of long connecting rods, and is used to drive the scissor assembly (4) to extend or retract via the connecting seat (3.3).

9. The automatic telescopic scissors device according to claim 8, characterized in that: A drag chain mounting plate for mounting a drag chain is provided on the mounting base plate (1.1); the drag chain is connected to the electromagnet (4.3) and is used to mount a circuit connected to the electromagnet (4.3); The drag chain is placed in a drag chain protective cover (3.5), and the drag chain protective cover (3.5) is used for the drag chain to move within a designated area.

10. The automatic telescopic scissors device according to claim 2, characterized in that: A reinforcing plate for increasing the strength of the protective cover (1.2) is arranged inside the protective cover (1.2).

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