A linkage door opening and closing device

Abstract

The present invention discloses a linkage door opening and closing device, belonging to the technical field of machinery and railway vehicles. It includes a door, an upper pulley device and a lower pulley device arranged on both sides of the door. The upper pulley device and the lower pulley device are respectively provided with matching slide rails and round shafts. It also includes a handwheel device, an upper connecting rod mechanism and a lower connecting rod mechanism respectively connected to the handwheel device. The upper connecting rod mechanism is connected to the slide rail and the lower connecting rod mechanism is connected to the round shaft. The handwheel device synchronously drives the slide rail and the round shaft to move in linkage through the upper connecting rod mechanism and the lower connecting rod mechanism, and the rotation center lines of the handwheel device, the slide rail and the round shaft are parallel to each other, driving the door to switch to the open position or the closed position, so as to achieve the purpose of being able to open or close the door at one time, with simple and convenient operation, and improving the efficiency and safety of door opening and closing.

Description

Technical Field

[0001] The present invention belongs to the technical field of machinery and railway vehicles, and in particular, relates to a linkage type vehicle door opening and closing device. Background Art

[0002] my country's P66K(H) and P70A movable side wall boxcars use 4 sliding doors and 4 Sierra doors to form movable side walls. The sliding doors and Sierra doors run on their own tracks. The Sierra door is more than 3m long, has large dimensions and is heavy. When opening the Sierra door, it is necessary to rotate the two crank mechanisms in the middle of the door body separately to move the Sierra door from a closed position close to the car body to an open position with a large gap from the car body along the transverse direction of the car body, staggered with the sliding door. The opening and closing operation of the Sierra door is relatively cumbersome. Due to structural limitations, the crank mechanism of the Sierra door is high above the ground, and it is very inconvenient to open and close the door in places without a platform. Summary of the invention

[0003] In view of this, in order to solve the above-mentioned problems existing in the prior art, the purpose of the present invention is to provide a linkage door opening and closing device so as to achieve the purpose of opening or closing the door at one time, which is simple and convenient to operate, and improves the efficiency and safety of door opening and closing.

[0004] The technical solution adopted by the present invention is: a linkage type vehicle door opening and closing device, including a vehicle door and an upper pulley device and a lower pulley device arranged on both sides of the vehicle door, the upper pulley device and the lower pulley device are respectively provided with matching slide rails and round shafts, and also include a handwheel device and an upper connecting rod mechanism and a lower connecting rod mechanism respectively connected to the handwheel device, the upper connecting rod mechanism is connected to the slide rail and the lower connecting rod mechanism is connected to the round shaft, the handwheel device synchronously drives the slide rail and the round shaft to move in linkage through the upper connecting rod mechanism and the lower connecting rod mechanism, and the rotation center lines of the handwheel device, the slide rail and the round shaft are parallel to each other, driving the vehicle door to switch to an open position or a closed position.

[0005] Furthermore, the handwheel device comprises a wheel rim, a web and a sleeve, wherein the wheel rim, the web and the sleeve are assembled into one body, and the sleeve is connected to a fixed shaft via a rolling bearing. The handwheel device has a simple composition and stable and reliable operation.

[0006] Furthermore, the web is provided with an arc groove concentric therewith, and the arc groove is provided with a limit shaft so that the door opening and closing device can just reach the door opening position and the door closing position.

[0007] Furthermore, the cross section of the wheel rim is set to be circular, which is convenient for rotation and comfortable to grip.

[0008] Further, the upper link mechanism includes a first upper swing arm, an upper rotating shaft, a second upper swing arm, and an upper link. One end of the first upper swing arm is connected to the slide rail, and the other end is connected to the upper rotating shaft. One end of the second upper swing arm is connected to the upper rotating shaft, and the other end is hinged to the upper link, and the other end of the upper link is hinged to the web plate.

[0009] Further, the lower link mechanism includes a lower link, a first lower swing arm, a second lower swing arm, and a lower rotating shaft. One end of the lower link is hinged to the web plate, and the other end is hinged to the first lower swing arm, and the first lower swing arm is connected to the lower rotating shaft. One end of the second lower swing arm is connected to the lower rotating shaft, and the other end is provided with the round tube.

[0010] Further, when the vehicle door is in the closed position, there is a deviation distance between the connecting line of the hinge points at both ends of the lower link and the rotation center line of the handwheel device, so that the vehicle door has a self-locking ability after being closed, improving the locking safety of the vehicle door.

[0011] Further, an elastic member for providing an elastic force to the second lower swing arm is arranged on the second lower swing arm. The elastic member can buffer the impact force when closing the door. Combining with the use of rolling bearings to support each rotating shaft to reduce the rotation resistance, the load of opening and closing the door is greatly reduced, making the operation labor-saving.

[0012] Further, the elastic member is a spring, and one end of the spring is hinged to the second lower swing arm, and the other end is hinged to the vehicle body where the vehicle door is located, so as to compress the spring by the self-weight of the vehicle door, and further enable the spring to store elastic energy.

[0013] Further, the upper pulley device includes vertical pulleys symmetrically arranged on both sides of the slide rail. The lower pulley device includes rollers carried on the round shaft to provide limit for the opening or closing of the vehicle door, and can save effort under the action of the pulley device, reducing the operation difficulty.

[0014] The beneficial effects of the present invention are:

[0015] 1. By using the linkage door opening and closing device provided by the present invention, the operator can stand on the ground and rotate the handwheel device. When the handwheel device is linked to the upper link mechanism and the lower link mechanism, the opening position or the closing position of the door can be switched, and thus the opening or closing of the door can be achieved at one time. The operation is simple and convenient, improving the efficiency and safety of door opening and closing. At the same time, due to the cooperation of the handwheel device with the upper link and the lower link, when the door is in the closed position, the door has a self-locking ability, improving the locking safety of the door. Through the spring device at the second lower swivel arm, the gravitational potential energy of the door when closing is converted into elastic energy and stored, and is converted into elastic force when opening the door, making the operation of opening and closing the door labor-saving. At the same time, due to the cooperation of the handwheel device with the upper link and the lower link, when the door is in the closed position, the door has a self-locking ability, improving the locking safety of the door. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a perspective view of the structural principle of the linkage door opening and closing device provided by the present invention when closed;

[0017] Figure 2 is a perspective view of the structural principle of the linkage door opening and closing device provided by the present invention when opened;

[0018] Figure 3 is a front side view of the structural principle of the linkage door opening and closing device provided by the present invention when opened;

[0019] Figure 4 is a front end view of the structural principle of the linkage door opening and closing device provided by the present invention when opened;

[0020] The reference numerals in the drawings are as follows:

[0021] 1 is the upper rotating shaft, 2 is the upper link, 3 is the handwheel device, 4 is the lower link, 5 is the lower rotating shaft, 6 is the rolling bearing, 7 is the door, 8 is the pulley, 9 is the roller, 10 is the side of the vehicle body, 11 is the end of the vehicle body;

[0022] 1.1 is the slide rail, 1.2 is the upper rotating shaft body, 1.3 is the first upper swivel arm, 1.4 is the second upper swivel arm, 1.5 is the center line of rotation when the upper rotating shaft moves;

[0023] 3.1 is the rim, 3.2 is the web, 3.3 is the bushing, 3.4 is the fixed shaft, 3.5 is the limit shaft, 3.6 is the center line of rotation of the handwheel device;

[0024] 4.1 is the first hinge point, 4.2 is the second hinge point;

[0025] 5.1 is the lower rotating shaft body, 5.2 is the first lower swivel arm, 5.3 is the spring device, 5.4 is the second lower swivel arm, 5.5 is the center line of rotation when the lower rotating shaft moves;

[0026] 3.2.1 is the connecting hole, and 3.2.2 is the arc groove;

[0027] 5.2.1 is the circular shaft. Detailed implementation manners

[0028] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some but not all of the embodiments of the present invention. Usually, the components of the embodiments of the present invention described and illustrated herein can be arranged and designed in various different configurations.

[0029] Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed present invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0030] It should be noted that, without conflict, the embodiments in the present invention and the features in the embodiments can be combined with each other.

[0031] It should be noted that: like reference numerals and letters denote like items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0032] In the description of the embodiments of the present invention, it should be noted that the orientation or positional relationship indicated is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the invention is usually placed during use, or the orientation or positional relationship commonly understood by those skilled in the art, or the orientation or positional relationship in which the product of the invention is usually placed during use. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present invention. In addition, the terms "first" and "second" are only used for descriptive distinction and cannot be construed as indicating or implying relative importance.

[0033] In the description of the embodiments of the present invention, it should also be noted that unless otherwise clearly specified and limited, the terms "arrangement" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances; the accompanying drawings in the embodiments are used to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Usually, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0034] Embodiment 1

[0035] To overcome the problem that the opening or closing operation of the vehicle door 7 on the existing vehicle body is very cumbersome, in this embodiment, a linkage door opening and closing device is specifically provided to solve the operation difficulty when the door 7 is opened or closed. One set of opening and closing mechanism is adopted for each door 7 of the vehicle body to realize the separation or closing movement of the door 7 relative to the vehicle body, that is, to switch between the open position and the closed position, as Figures 1-4 shown, the specific design is as follows:

[0036] It includes a door 7 and an upper pulley device and a lower pulley device arranged on both sides of the door. The upper pulley device and the lower pulley device are respectively provided with a matching slide rail 1.1 and a circular shaft 5.2.1. By the upper pulley device running along the slide rail 1.1 and the lower pulley device running along the circular shaft 5.2.1, it can be realized to promote the door 7 to open or close. The upper pulley device includes vertical pulleys 8 symmetrically arranged on both sides of the slide rail 1.1, and the lower pulley device includes rollers 9 carried on the circular shaft 5.2.1.

[0037] It also includes a handwheel device 3 and an upper link mechanism and a lower link mechanism respectively connected to the handwheel device 3. The upper link mechanism is connected to the slide rail 1.1 and the lower link mechanism is connected to the circular shaft 5.2.1. The handwheel device 3 synchronously drives the slide rail 1.1 and the circular shaft 5.2.1 to move in linkage through the upper link mechanism and the lower link mechanism, and the rotation center lines of the handwheel device 3, the slide rail 1.1 and the circular shaft 5.2.1 are parallel to each other, driving the door 7 to switch to the open position or the closed position. The upper link mechanism and the lower link mechanism form two linked four-bar linkages, and the upper link mechanism and the lower link mechanism form a double-linkage opening and closing mechanism that can move up and down in linkage.

[0038] The handwheel device 3 includes a rim 3.1, a web 3.2 and a bushing 3.3. The rim 3.1, the web 3.2 and the bushing 3.3 are assembled into one body, and the bushing 3.3 is connected to a fixed shaft 3.4 through a rolling bearing 6. The fixed shaft 3.4 is fixed to the end of the vehicle body 11. Since there is a rolling bearing 6 between the bushing 3.3 and the fixed shaft 3.4, the rotation resistance of the handwheel device 3 is reduced. The cross-section of the rim 3.1 is set to be circular, which is convenient for rotation and comfortable to grip. The middle of the web 3.2 protrudes towards the door 7. There are 2 connecting holes 3.2.1 on the web 3.2. The 2 connecting holes 3.2.1 are respectively hinged to connect the upper link 2 and the lower link 4, so that the upper link 2 and the lower link 4 can rotate synchronously with the rim 3.1 and transmit the driving torque input by the rim 3.1 to a distance. The middle of the web 3.2 is recessed towards the inner side of the vehicle body, so that the rim 3.1, the upper link 2 and the lower link 4 are spatially staggered from each other and will not interfere with each other during movement. At the same time, to ensure the normal operation of the handwheel device 3, an arc groove 3.2.2 concentric with it is opened on the web 3.2, and a limit shaft 3.5 is provided in the arc groove 3.2.2. The limit shaft 3.5 is fixed to the vehicle body. Through the cooperation of the limit shaft 3.5 and the arc groove 3.2.2, the rotation angle of the rim 3.1 is further restricted, so that the door opening and closing device can just reach the open position and the closed position of the door 7.

[0039] The upper link mechanism includes a first upper swing arm 1.3, an upper rotating shaft 1, a second upper swing arm 1.4 and an upper link 2. The upper rotating shaft 1 includes an upper rotating shaft body 1.2, and the upper rotating shaft body 1.2 is rotationally assembled on the vehicle body through a rolling bearing 6. One end of the first upper swing arm 1.3 is connected to the slide rail 1.1, and the other end is connected to the upper rotating shaft 1. One end of the second upper swing arm 1.4 is connected to the upper rotating shaft 1, and the other end is hinged to the upper link 2, and the other end of the upper link 2 is hinged to the web 3.2. Among them, the slide rail 1.1 is a long strip-shaped circular shaft, which cooperates with the vertical pulley 8 at the upper end of the door 7 to support the sliding of the door 7 on the side. The slide rail 1.1 is parallel to the upper rotating shaft 1, and the two are fixed into one body through at least 2 first upper swing arms 1.3. The second upper swing arm 1.4 is fixed to the end of the upper rotating shaft 1 and has an appropriate angle with the first upper swing arm 1.3 to ensure that the slide rail 1.1 can reach the open position or the closed position of the door 7.

[0040] The lower connecting rod mechanism includes a lower connecting rod 4, a first lower rotating arm 5.2, a second lower rotating arm 5.4 and a lower rotating shaft 5, wherein the lower rotating shaft 5 includes a lower rotating shaft body 5.1 and the lower rotating shaft body 5.1 is rotatably assembled on the vehicle body through a rolling bearing 6; one end of the lower connecting rod 4 is hingedly connected to the web 3.2, and the other end is hingedly connected to the first lower rotating arm 5.2, and the first lower rotating arm 5.2 is connected to the lower rotating shaft 5; one end of the second lower rotating arm 5.4 is connected to the lower rotating shaft 5, and the other end is provided with the round tube. Among them, the lower rotating shaft 5, the first lower rotating arm 5.2, and the second lower rotating arm 5.4 are fixed as a whole, the lower rotating shaft 5 and the upper rotating shaft 1 are parallel to each other and at the same time are parallel to each other with the rotation center line of the hand wheel device 3, and the second lower rotating arm 5.4 is parallel to each other with the first upper rotating arm 1.3, and the head of the second lower rotating arm 5.4 is provided with the circular shaft 5.2.1, which is used to support the arc-shaped roller 9 at the bottom of the car door 7, and cooperates with the lateral support of the slide rail 1.1, so that the car door 7 remains in a basically upright state when the upper rotating shaft 1 and the lower rotating shaft 5 rotate in conjunction.

[0041] In order to enhance the self-locking property of the door opening and closing device when the door 7 is in the closed state, when the door 7 is in the closed position, there is a deviation distance between the line connecting the hinge points at both ends of the lower connecting rod 4 (i.e., between the first hinge point 4.1 and the second hinge point 4.2) and the rotation center line of the hand wheel device 3. Under the action of the gravity of the door 7, the lower connecting rod 4 will be subjected to the pulling force transmitted from the lower rotating shaft 5, causing the hand wheel device 3 to produce a movement tendency to continue rotating toward the closed position, thereby realizing self-locking and improving the locking safety.

[0042] The second lower rotating arm 5.4 is provided with an elastic member providing elastic force thereto, the elastic member being a spring device 5.3 (i.e., a spring), one end of the spring being hingedly connected to the second lower rotating arm 5.4, and the other end being hingedly connected to the side surface 10 of the vehicle body. The upper end of the spring device 5.3 which can generate elastic force when compressed is hingedly connected to the lower side of the first lower rotating arm 5.2, and the other end being hingedly connected to the vehicle body. When the opening and closing device is opened, the first lower rotating arm 5.2 is in a vertical state, and when it is closed, the first lower rotating arm 5.2 is in a horizontal state, and the vehicle door 7 moves downward from the open position to the closed position. During movement, the gravity of the door 7 is used to compress the spring device 5.3, and the potential energy of the door 7 is converted into elastic energy. When the door 7 is opened, the elastic force stored in the spring device 5.3 can offset most of the weight of the door 7. Combined with the rolling bearing 6 supporting the lower rotating shaft 5, the operation of opening and closing the door 7 is labor-saving, and the torsional load of the lower rotating shaft 5 is greatly reduced. The first lower rotating arm 5.2 is fixed to the end of the lower rotating shaft 5, and has a proper angle with the second lower rotating arm 5.4 to ensure that the second lower rotating arm 5.4 can reach the opening position and the closing position of the door 7.

[0043] The method of using the vehicle door opening and closing device in this embodiment is as follows: Figures 2-4As shown, when the door 7 is opened, the hand wheel device 3 is rotated toward the outside of the vehicle body, and the upper connecting rod mechanism drives the slide rail 1.1 of the opening and closing mechanism, and the lower connecting rod mechanism drives the round shaft 5.2.1 of the opening and closing mechanism, and then the slide rail 1.1 and the round shaft 5.2.1 are simultaneously driven to rotate toward the upper part of the vehicle body, driving the door 7 to move laterally along the vehicle body, and staggered with the unopened door 7 on the same side, and the opened door 7 is pushed to the end of the unopened door 7 of the vehicle along the longitudinal direction of the vehicle body, exposing the loading / unloading window of the vehicle body, and carrying out loading and unloading operations.

[0044] like Figure 1 As shown, when closing the door 7, the hand wheel device 3 is rotated toward the inner side of the vehicle body, and the slide rail 1.1 and the round shaft 5.2.1 of the opening and closing mechanism are driven by the connecting rod mechanism to rotate toward the lower side of the vehicle body at the same time, driving the door 7 to move horizontally along the vehicle body to the closed position, and then the door 7 is locked.

[0045] The present invention is not limited to the above-mentioned optional implementation modes. Anyone can derive other various forms of products under the inspiration of the present invention. However, no matter what changes are made in the shape or structure, all technical solutions that fall within the scope defined by the claims of the present invention fall within the protection scope of the present invention.

Claims

1. A linkage door opening and closing device, comprising a door and upper pulley devices and lower pulley devices arranged on both sides of the door, characterized in that, The upper pulley device and the lower pulley device are respectively provided with matching slide rails and round shafts, and also include a handwheel device and an upper connecting rod mechanism and a lower connecting rod mechanism respectively connected to the handwheel device, the upper connecting rod mechanism is connected to the slide rail and the lower connecting rod mechanism is connected to the round shaft, the handwheel device synchronously drives the slide rail and the round shaft to move in conjunction with each other through the upper connecting rod mechanism and the lower connecting rod mechanism, and the rotation center lines of the handwheel device, the slide rail and the round shaft are parallel to each other, driving the car door to switch to the open position or the closed position; the handwheel device includes a wheel rim, a web and a shaft sleeve, the wheel rim, the web and the shaft sleeve are assembled into one body, and the shaft sleeve is connected to a fixed shaft through a rolling bearing; the lower connecting rod mechanism The rod mechanism includes a lower connecting rod, a first lower rotating arm, a second lower rotating arm and a lower rotating shaft, one end of the lower connecting rod is hingedly connected to the web, and the other end is hingedly connected to the first lower rotating arm, and the first lower rotating arm is connected to the lower rotating shaft; one end of the second lower rotating arm is connected to the lower rotating shaft, and the other end is provided with the circular tube; when the car door is in the closed position, there is a deviation distance between the line connecting the hinge points at both ends of the lower connecting rod and the rotation center line of the hand wheel device; the second lower rotating arm is provided with an elastic member to provide elastic force thereto; the upper pulley device includes vertical pulleys symmetrically arranged on both sides of the slide rail; the lower pulley device includes a roller carried on the circular shaft.

2. The linkage door opening and closing device according to claim 1, characterized in that, The web is provided with a circular arc groove which is concentric with the web, and the circular arc groove is provided with a limiting shaft.

3. The linkage door opening and closing device according to claim 1, characterized in that, The cross section of the wheel rim is set to be circular.

4. The linkage door opening and closing device according to claim 1, characterized in that, The upper connecting rod mechanism includes a first upper rotating arm, an upper rotating shaft, a second upper rotating arm and an upper connecting rod, wherein one end of the first upper rotating arm is connected to the slide rail, and the other end is connected to the upper rotating shaft; one end of the second upper rotating arm is connected to the upper rotating shaft, and the other end is hinged to the upper connecting rod, and the other end of the upper connecting rod is hinged to the web.

5. The linkage door opening and closing device according to claim 1, characterized in that, The elastic member is configured as a spring, one end of which is hingedly connected to the second lower rotating arm, and the other end of which is hingedly connected to the vehicle body where the vehicle door is located.

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