CN213138762U

CN213138762U - Single-optical-axis double-pulley sliding plug door system

Info

Publication number: CN213138762U
Application number: CN202021307194.7U
Authority: CN
Inventors: 陈辉; 马生君
Original assignee: BEIJING BODE TRANSPORTATION EQUIPMENT CO LTD
Current assignee: BEIJING BODE TRANSPORTATION EQUIPMENT CO LTD
Priority date: 2020-07-06
Filing date: 2020-07-06
Publication date: 2021-05-07
Anticipated expiration: 2030-07-06

Abstract

The utility model belongs to the technical field of track traffic's technique and specifically relates to a two coaster sliding plug door system of single optical axis is related to, it includes that the level sets up in the big bottom plate of carriage door opening top, connects two longitudinal sliding subassembly, the bearing optical axis of horizontal connection between two longitudinal sliding subassemblies that are used for following business turn over carriage door opening direction and slide on the big bottom plate to and be used for connecting door leaf and sliding connection in bearing two coasters on the optical axis. The utility model provides a current guide system structure that slides reasonable inadequately, stopper sliding door open and close unsmooth technical problem.

Description

Single-optical-axis double-pulley sliding plug door system

Technical Field

The utility model belongs to the technical field of track traffic's technique and specifically relates to a two coaster sliding plug door systems of single optical axis are related to.

Background

Along with the rapid development of high-speed trains and urban rail transit, the quality of stopper sliding door also constantly improves thereupon, and many stopper sliding doors are the double door structure, have the advantage that the speed of opening the door is fast, the space of opening the door is big with the carriage door opening cooperation, make things convenient for the passenger to get on, get off the bus. However, the double-opening sliding plug door in the prior art has the following disadvantages: the structure of a sliding guide system for guiding the sliding of the door leaf is not reasonable enough, so that the door leaf runs smoothly in the opening and closing process.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a single optical axis two coaster sliding plug door system, it has the characteristics that make the sliding plug door open and close more smoothly to prior art exists not enough.

The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme: the utility model provides a two coaster sliding plug door system of single optical axis, includes that the level sets up in the big bottom plate of carriage door opening top, connects and be used for along passing in and out two longitudinal sliding subassembly that slide in carriage door opening direction, horizontal connection bear the weight of the optical axis between two longitudinal sliding subassembly on the big bottom plate to and be used for connecting door leaf and sliding connection two coasters on bearing the optical axis.

By adopting the technical scheme, when the door leaves are opened in the using process, the longitudinal sliding assembly slides towards the outer side of the door opening of the carriage under the action of external force, and after the longitudinal sliding assembly slides in place, the two door leaves slide along the bearing optical axis in the direction of deviating from each other to open the door opening for passengers to enter and exit; when the door leaf is closed, the two door leaves slide along the bearing optical axis in the direction close to each other to close the door opening, then the longitudinal sliding assembly slides towards the inner side of the door opening of the carriage under the action of external force, and after the longitudinal sliding assembly slides in place, the door leaf is embedded into the door opening, and the door leaf closing process is completed. Compared with the prior art, the weight of the door leaf is born by the bearing optical axis, the extrusion force of the door leaf guide rail above and below the carriage door opening, especially below the carriage door opening is smaller, and the sliding process is smoother.

The present invention may be further configured in a preferred embodiment as: the longitudinal sliding assembly comprises a U-shaped side hanging seat with an opening facing downwards and fixedly connected to the large bottom plate, a longitudinal sliding shaft horizontally supported in the opening of the side hanging seat, and a side sliding hanging seat sleeved on the longitudinal sliding shaft; the axis of the longitudinal sliding shaft is parallel to the direction of entering and exiting the door opening of the carriage; the bearing optical axis is connected to the two side sliding hanging seats.

By adopting the technical scheme, when the sliding plug is used, the sliding of the bearing optical axis is guided by the two longitudinal sliding shafts, the straightness in the movement is better, the problem of interference is not easy to occur when the door leaf enters and exits the door opening of the carriage, and the plug action can be more smoothly completed.

The present invention may be further configured in a preferred embodiment as: two groups of guide assemblies for guiding the sliding of the pulley are arranged at the lower part of the large bottom plate; the guide assembly comprises a guide rail fixedly connected to the lower portion of the large bottom plate along the length direction of the large bottom plate, a guide strut vertically and fixedly connected to the pulley, and a guide roller connected to the guide strut and in rolling fit with the guide rail.

Through adopting above-mentioned technical scheme, the smoothness nature that the door leaf slided has further been improved.

The present invention may be further configured in a preferred embodiment as: the guide rail is a strip-shaped groove with a downward opening, one end of the guide rail close to the large bottom plate is an open end, and the other end of the guide rail is in arc transition to the direction perpendicular to the length direction of the large bottom plate.

Through adopting above-mentioned technical scheme, the inside and outside swing of edge on the door leaf can be restricted to the guide rail, can guide the slip of door leaf simultaneously, and then makes the door leaf more smooth when sliding.

The present invention may be further configured in a preferred embodiment as: and one end of each guide rail, which is close to each other, is provided with an extension plate which is fixedly connected to the large bottom plate.

Through adopting above-mentioned technical scheme, there is the impact force to the guide rail two door leafs when crowded into carriage door opening, and the restriction guide rail that the extension board can be fine reduces the influence of impact force.

The present invention may be further configured in a preferred embodiment as: and the lower part of the large bottom plate is provided with a middle linear guide assembly for guiding the sliding of the bearing optical axis.

The present invention may be further configured in a preferred embodiment as: the middle linear guide assembly comprises a linear guide rail fixedly connected to the lower part of the large bottom plate, and a middle hanging seat, the upper part of which is connected to the linear guide rail in a sliding manner, and the lower part of which is fixedly connected to the bearing optical axis.

Through adopting above-mentioned technical scheme, the cooperation of linear guide and middle hanging seat makes the slip that bears the weight of the optical axis receive the guide, and then more smooth when accomplishing the action of plugging and pulling.

The present invention may be further configured in a preferred embodiment as: linear grooves are formed in two sides of the linear guide rail, a sliding sleeve is fixedly connected to the upper portion of the middle hanging seat and matched with the linear guide rail in a sliding mode, the sliding sleeve is U-shaped, a linear protrusion is arranged on the inner side of an opening of the sliding sleeve in a protruding mode, and the linear protrusion is matched with the linear grooves.

Through adopting above-mentioned technical scheme, middle hanging seat can hang the middle part that bears the weight of the optical axis, reduces the crooked degree that bears the weight of the optical axis middle part by a wide margin, makes the door leaf all comparatively smooth when sliding and accomplishing the stopper and draw the action.

The present invention may be further configured in a preferred embodiment as: a supporting beam is connected between the two side-sliding hanging seats.

By adopting the technical scheme, the bending resistance of the large bottom plate can be improved by the supporting cross beam, so that the technical effect of reliably and stably keeping the large bottom plate in a flat state is achieved; meanwhile, the mounting base can be used as a mounting base of some components, and the mounting positions of the components are optimized.

The present invention may be further configured in a preferred embodiment as: the middle hanging seat is provided with a connecting plate which is fixedly connected to the supporting beam.

Through adopting above-mentioned technical scheme, supporting beam is thick relatively, non-deformable, and the connecting plate makes middle seat of hanging can follow supporting beam and borrow the power, and then has better hanging and supporting role to bearing the weight of the optical axis.

To sum up, the utility model discloses a following at least one useful technological effect:

1. compared with the prior art, the weight of the door leaf is born by the bearing optical axis, the extrusion force on the door leaf guide rail above and below the carriage door opening, particularly below the carriage door opening is smaller, and the sliding process is smoother;

2. the guide assembly is arranged, so that the sliding of the door leaf is smoother;

3. the middle linear guide assembly is arranged, so that the sliding of the door leaf is smoother.

Drawings

FIG. 1 is a schematic view of a single-spool dual block plug door system from a first perspective;

FIG. 2 is a schematic view of a single-spool dual pulley plug door system from a second perspective;

FIG. 3 is a schematic view of a single-spool dual pulley plug door system from a third perspective;

FIG. 4 is a schematic structural view of a guide assembly;

FIG. 5 is a schematic view of a mid-line guide assembly;

FIG. 6 is a schematic view of a single-spool dual pulley plug door system with a toothed belt drive;

FIG. 7 is a schematic structural diagram of a single-spindle dual-pulley sliding plug door system with a toothed belt drive and a locking and unlocking mechanism;

fig. 8 is a schematic structural view of the locking and unlocking mechanism.

In the figure, 1, a mechanism hanger; 10. a hanger transverse plate; 11. a hanger plate; 12. a middle connecting seat; 2. a large bottom plate; 20. flanging; 21. a touch travel switch; 3. a longitudinal slide assembly; 30. a side hanging seat; 31. a longitudinal slide shaft; 32. a side-slipping hanging seat; 4. carrying an optical axis; 40. a support beam; 400. triggering the touch sheet; 5. a pulley; 6. a guide assembly; 60. a guide rail; 600. an extension plate; 61. a guide pillar; 62. a guide roller; 7. a middle linear guide assembly; 70. a linear guide rail; 71. a middle hanging seat; 710. a sliding sleeve; 711. a connecting plate; 80. a toothed belt wheel set; 800. an active end fixing seat; 801. a driving pulley; 802. a driven end fixing seat; 803. a driven pulley; 804. a toothed belt; 81. a toothed belt connection; 810. a toothed belt connecting plate; 811. an upper toothed belt clamp; 812. a lower toothed belt clamp; 82. a drive member; 9. a locking and unlocking mechanism; 90. rotating the support; 91. unlocking the pull rod; 92. pulling a plate; 93. swinging arms; 94. unlocking the connecting plate; 940. a transfer support; 95. locking the support; 96. the middle support swing arm; 960. a middle support plate; 97. a drive pull rod.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1, fig. 7, for the utility model discloses a single optical axis double block sliding plug door system, including installing mechanism gallows 1 on the carriage lateral wall, rigid coupling on mechanism gallows 1 and the level set up in big bottom plate 2 of carriage door opening top, connect and be used for along two longitudinal sliding subassembly 3 that business turn over carriage door opening direction slided on big bottom plate 2, horizontal connection bear optical axis 4 between two longitudinal sliding subassembly 3, sliding connection bears two coasters 5 on optical axis 4, the door leaf rigid coupling is on coaster 5.

In the use process, when the door leaves are opened, the longitudinal sliding assembly 3 slides towards the outer side of the door opening of the carriage under the action of external force, and after the door leaves slide in place, the two door leaves slide along the bearing optical axis 4 in the directions deviating from each other to open the door opening for passengers to enter and exit; when the door leaf is closed, the two door leaves slide along the bearing optical axis 4 in the direction close to each other to close the door opening, then the longitudinal sliding component 3 slides towards the inner side of the door opening of the carriage under the action of external force, and after the longitudinal sliding component slides in place, the door leaf is embedded into the door opening, and the door leaf closing process is completed. Compared with the prior art, the weight of the door leaf is born by the bearing optical axis, the extrusion force of the door leaf guide rail above and below the carriage door opening, especially below the carriage door opening is smaller, and the sliding process is smoother.

The specific structure of the above components is described next:

firstly, mechanism gallows 1 installs on the carriage lateral wall, compares in the carriage roof, and the downward gravity of carriage lateral wall ability better bearing is difficult to appear warping, and this basis that provides for the smooth slip of door leaf. The mechanism hanger 1 comprises a hanger transverse plate 10 and a hanger plate 11 which are arranged at two ends, and an intermediate connecting seat 12 arranged in the middle. The transverse plate 10 of the hanger is a right-angle plate, one plate surface is fixedly attached to the side wall of the carriage through bolts, and the other plate surface is perpendicular to the side wall of the carriage; the hanging plate 11 is also a right-angle plate, one plate surface of the hanging plate is attached and fixed to the plate surface of the hanging plate transverse plate 10 perpendicular to the side wall of the carriage through bolts, and the other plate surface is horizontally arranged and fixedly connected to the end part of the large bottom plate 2 through bolts; the middle connecting seat 12 comprises a flat plate and a U-shaped plate, wherein the flat plate is fixed on the side wall of the carriage through a bolt, the opening of the U-shaped plate faces upwards and is fixedly connected with the flat plate, and the bottom of the U-shaped plate is a horizontal plane and is fixedly connected on the large bottom plate 2 through a bolt. In the using process, the transverse plate 10 and the hanging plate 11 of the hanging bracket well hang two ends of the large bottom plate 2, and meanwhile, the right-angle plate structure provides good torsion resistance for the large bottom plate 2, so that the large bottom plate 2 can be reliably kept in a flat state; the middle connecting seat 12 is hung at the middle part of the large bottom plate 2, and the U-shaped plate can also provide the large bottom plate 2 with anti-torsion capability; finally, the large bottom plate 2 can be reliably and stably kept in a flat state, and reliable support is provided for the upper parts of the large bottom plate.

The large bottom plate 2 is rectangular, and the length direction is parallel to the upper edge and the lower edge of the door opening; the flanging 20 extending upwards is arranged on one side of the large bottom plate 2 in the length direction, and the flanging 20 is perpendicular to the plate surface direction of the large bottom plate 2, so that the bending resistance of the large bottom plate 2 can be improved, and the technical effect of reliably and stably keeping the large bottom plate 2 in a flat state is achieved.

Secondly, the longitudinal sliding assembly 3 comprises a U-shaped side hanging seat 30 with an opening facing downwards and fixedly connected to the large bottom plate 2, a longitudinal sliding shaft 31 horizontally supported in the opening of the side hanging seat 30, and a side sliding hanging seat 32 sleeved on the longitudinal sliding shaft 31; the axis of the longitudinal slide shaft 31 is vertical to the length direction of the large bottom plate 2; the carrier optical axis 4 is connected to two side-sliding suspension mounts 32. When the sliding device is used, the sliding of the bearing optical axis 4 is guided by the two longitudinal sliding shafts 31, the straightness in the movement is good, the problem of interference is not easy to occur when a door leaf enters or exits a door opening of a carriage, and the plugging action can be more smoothly completed.

A supporting beam 40 is horizontally and fixedly connected between the two side-sliding hanging seats 32, and the supporting beam 40 can improve the bending resistance of the large bottom plate 2, so that the large bottom plate 2 is reliably and stably kept in a flat state; meanwhile, the mounting base can be used as a mounting base of some components, and the mounting positions of the components are optimized.

The pulley 5 comprises a sleeve part sleeved on the bearing optical axis 4, a connecting part with one end fixedly connected with the sleeve part, and a flat plate part with one end fixedly connected with the connecting part, wherein a through hole is formed in the flat plate part. The pulley 5 is fixedly connected with the door leaf by a bolt passing through a through hole on the flat plate part. The trolley 5 is preferably made of plastic, which is relatively easy to form and relatively inexpensive to replace after wear.

With reference to fig. 3 and 4, in order to further improve the smoothness of the sliding movement of the door leaf, two sets of guide assemblies 6 for guiding the sliding movement of the pulley 5 are provided at the lower portion of the large bottom plate 2.

The guide assembly 6 comprises a guide rail 60 fixedly connected to the lower part of the large bottom plate 2 along the length direction of the large bottom plate 2, a guide pillar 61 vertically fixedly connected to the pulley 5, and a guide roller 62 connected to the guide pillar 61 and in rolling fit with the guide rail 60. The guide rail 60 is a strip-shaped groove with a downward opening, one end of the guide rail close to the large bottom plate 2 is an open end, and the other end of the guide rail is in arc transition to the direction perpendicular to the length direction of the large bottom plate 2. An extension plate 600 is provided at one end of the two guide rails 61 close to each other, and the extension plate 600 is provided with bolts and is fixed to the large base plate 2 by the bolts.

The guide rail 60 can limit the inner and outer swing of the upper edge of the door leaf and can guide the sliding of the door leaf, so that the door leaf is smoother when sliding; when the two door leaves are pushed into the door opening of the carriage, impact force exists on the guide rail 60, the extension plate 600 can well limit the guide rail 60, and the influence of the impact force is reduced.

Referring to fig. 2 and 5, in order to further improve the sliding fluency of the door leaf, a middle linear guide assembly 7 for guiding the sliding of the bearing optical axis 4 is arranged at the lower part of the large bottom plate 2, and the middle linear guide assembly 7 is arranged at the middle part of the large bottom plate 2. The middle linear guide assembly 7 comprises a linear guide rail 70 perpendicular to the length direction of the large bottom plate 2 and fixedly connected to the lower part of the large bottom plate 2, and a middle hanging seat 71 with the upper part slidably connected to the linear guide rail 70 and the lower part fixedly connected to the bearing optical axis 4. Linear grooves are formed in two sides of the linear guide rail 70, a sliding sleeve 710 is fixedly connected to the upper portion of the middle hanging seat 71, the sliding sleeve 710 is matched with the linear guide rail 70 in a sliding mode, the sliding sleeve 710 is U-shaped, a linear protrusion is convexly arranged on the inner side of an opening of the sliding sleeve 710, and the linear protrusion is matched with the linear grooves, so that sliding connection between the middle hanging seat 71 and the linear guide rail 70 is achieved. The lower part of the middle hanging seat 71 is in an open annular structure and is sleeved on the bearing optical axis 4, the open annular structure is matched with a fastening screw, the opening of the open annular structure can be reduced by screwing the fastening screw, and then the bearing optical axis 4 is compressed. A connecting plate 711 is also vertically arranged on the middle hanging seat 71, and the connecting plate 711 is attached to the supporting beam 40 and is fixedly connected to the supporting beam 40 through screws.

The cooperation of the linear guide rail 70 and the intermediate hanging seat 71 leads the sliding of the bearing optical axis 4 to be guided, so that the sliding is smoother when the plugging action is finished; meanwhile, the middle hanging seat 71 can hang the middle part of the bearing optical axis 4, so that the bending degree of the middle part of the bearing optical axis 4 is greatly reduced, and the door leaf is smooth when sliding and plugging actions are completed. The supporting beam 40 is relatively thick and not easy to deform, and the connecting plate 711 enables the middle hanging seat 71 to be capable of helping from the supporting beam 40, so that the supporting beam 4 has better hanging and supporting functions.

Referring to fig. 6, a trigger collision sheet 400 is arranged on the cross beam 40, one side of the trigger collision sheet 400 departing from the car door opening is an inclined plane, and the upper surface is a plane; a touch travel switch 21 is fixedly connected to the large bottom plate 2, and the output end (roller) of the touch travel switch 21 corresponds to the trigger touch piece 400; when the door leaf finishes the plugging action and the bearing optical axis 4 slides in place, the output end of the touch travel switch 21 scratches the inclined plane and reaches the flat upper surface of the trigger touch sheet 400, the internal contact is close to and communicated, and an electric signal for finishing the closing of the door leaf is sent out; on the contrary, the output end of the touch type travel switch 21 is elastically extended downward, and the internal contacts thereof are far away from each other to send out an electric signal that the door leaf is in an open state. Here, the touch type travel switch 21 can be realized by using a common similar travel switch, and the shape and the arrangement position of the trigger piece 400 make it possible to conduct an electric signal more reliably.

Referring to fig. 6 and 7, the sliding movement of the door is driven by the toothed belt drive. Specifically, the toothed belt driving device comprises a toothed belt wheel set 80, a toothed belt connecting piece 81 and a driving piece 82; the toothed belt pulley set 80 includes a driving end fixing seat 800 and a driven end fixing seat 802 fixedly connected to two ends of the supporting beam 40, a driving pulley 801 vertically and rotatably supported in the driving end fixing seat 800, a driven pulley 803 vertically and rotatably supported in the driven end fixing seat 802, and a toothed belt 804 fitted on the driving pulley 801 and the driven pulley 803. The two toothed belt connecting pieces 81 are respectively connected to the two pulleys 5, one is connected to the upper side of the pulley 5 and is connected to the toothed belt 804 through the upper side of the supporting cross beam 40, and the other is connected to the lower side of the pulley 5 and is connected to the toothed belt 804 through the lower side of the supporting cross beam 40. The driving member 82 is fixed to the driving end fixing base 800 and the output shaft thereof is fixed to the driving pulley 801.

When the sliding door is used, the driving piece 82 drives the driving belt wheel 801 to rotate forward and backward, so as to drive the toothed belt 804 to move, the toothed belt 804 drives the two toothed belt connecting pieces 81 to approach or separate from each other, so as to drive the two pulleys 5 to approach or separate from each other, and the sliding of the door leaf is completed. The wheel surfaces of the whole driving pulley 801 and the whole driven pulley 803 are vertically arranged, the occupied area is small, meanwhile, the toothed belt 804 also surrounds in the vertical direction, the occupied area is small, and the device is very suitable for arrangement in a limited space of a door system.

The toothed belt connecting member 81 includes a toothed belt connecting plate 810 having one end fixedly coupled to the pulley 5 and the other end extending toward the toothed belt 804, an upper toothed belt clip 811 horizontally fixedly coupled to the toothed belt connecting plate 810, and a lower toothed belt clip 812 having teeth formed on one surface thereof opposite to the upper toothed belt clip 811 and fixedly coupled to the upper toothed belt clip 811 by bolts. The lower toothed belt clip 812 is provided with a toothed belt groove, a part of the toothed belt 804 is embedded in the toothed belt groove, and the upper toothed belt clip 811 and the lower toothed belt clip 812 are matched to clamp the toothed belt 804.

When in use, the upper toothed belt clamp 811 and the lower toothed belt clamp 812 can reliably clamp the toothed belt 804, thereby effectively transmitting power to the pulley 5; the cooperation of the toothed belt grooves and the teeth makes the upper toothed belt clip 811 and the lower toothed belt clip 812 not easy to loosen and slip, and the use is more reliable.

Referring to fig. 7 and 8, in the running process of the railway vehicle, the carriage has certain shaking which is transmitted to the door system to easily cause abnormal opening of the door leaf, and a locking and unlocking mechanism 9 is arranged for locking the closing state of the door leaf.

Specifically, the locking and unlocking mechanism 9 includes a rotating support 90 horizontally fixed on the supporting beam 40, a swing arm 93 rotatably supported in the rotating support 90, a pulling plate 92 having an included angle with the length direction of the swing arm 93 and fixedly connected with the swing arm 93, an unlocking pull rod 91 with one end horizontally rotatably connected to the pulling plate 92, an unlocking connecting plate 94 with one end horizontally rotatably connected to the swing arm 93, and a locking support 95 horizontally rotatably connected to the other end of the unlocking connecting plate 94. The locking support 95 is fixedly connected to the lower surface of the large bottom plate 2, and when the door leaf is in a closed state, the axis of the unlocking connecting plate 94 is collinear with the axis of the swing arm 93 and is perpendicular to the length direction of the large bottom plate 2.

When the door leaf is in a closed state, the axis of the unlocking connecting plate 94 is collinear with the axis of the swing arm 93 and is vertical to the length direction of the large bottom plate 2, so that the door leaf can be hindered by the unlocking connecting plate 94 and the swing arm 93 when entering and exiting a compartment door opening, and further can be kept in a stable state; when the door leaf is to be opened, the unlocking pull rod 91 is pulled, the unlocking pull rod 91 pulls the pull plate 92, and the pull plate 92 drives the swing arm 93 to swing, so that the swing arm 93 and the unlocking connecting plate 94 are separated from the same line, namely, from a dead point, at the moment, the bearing optical axis 4 can slide, and the door leaf can be opened.

The unlocking lever 91 can be driven by a separately provided telescopic element (cylinder, electric push rod) or can be connected directly to the drive element 82. At this time, the driving member 82 is a motor with two output shafts, i.e., one output shaft outputs torque to be fixedly connected with the driving pulley 801, and the other output shaft outputs swinging torque to be connected with the unlocking pull rod 91. Specifically, a motor disclosed in chinese patent with a grant number of CN201621199676.9 and a name of dual-output one-way brushless motor may be adopted, which has two stators and two rotors, and has two output shafts, and the two output shafts are respectively connected to the driving pulley 801 and the unlocking lever 91.

In order to lock the door leaf more stably, the locking and unlocking mechanism 9 includes a rotating support 90, a swing arm 93, an unlocking connecting plate 94 and a locking support 95 which are arranged on two sides. Like this can restrict the door leaf in two points when the locking, the door leaf atress is more even, and the locking effect is better.

In order to reduce the number of the driving members 82, a driving link 92 is connected between the two swing arms 93, so that the two swing arms 93 can be driven by one driving member 82. In practical use, the transmission pull rod 92 connecting the two swing arms 93 is long, and the middle part of the transmission pull rod is easy to deform, so that the transmission pull rod cannot synchronously transmit drive to the far swing arm 93, and the locking and unlocking are easy to break down. For this purpose, a horizontal intermediate support plate 960 is fixed to the middle of the support beam 40, an intermediate support swing arm 96 is horizontally and rotatably connected to the intermediate support plate 960, and the transmission pull rod 92 has two swing arms 93 respectively connected to the intermediate support swing arm 96 and the corresponding swing arm 93. The length of the transmission pull rod 92 is shortened equivalently, and the middle supporting swing arm 96 plays a supporting role, so that the deformation influence of the transmission pull rod 92 is greatly reduced, and the smoothness of locking and unlocking is ensured.

The swing arm 93 and the unlocking connecting plate 94 may be connected by a common pin. In practical use, because the length of the swing arm 93 is slightly longer, slight up-and-down shaking exists in the rotating process and the unlocking connecting plate 94, and the shaking easily causes unsmooth rotation; set up switching support 940 for this reason, switching support 940 includes the dwang at middle part and the baffle of perpendicular rigid coupling in dwang both ends, and the dwang is worn to locate in the hole of swing arm 93 and unblock connecting plate 94, and two baffle laminating are in the side of swing arm 93 and unblock connecting plate 94, and two baffles have played the restriction effect to rocking of swing arm 93 and unblock connecting plate 94 like this, make its rotation between them more smooth.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a single optical axis double block sliding plug door system which characterized in that: the device comprises a large bottom plate (2) horizontally arranged above a carriage door opening, two longitudinal sliding assemblies (3) connected to the large bottom plate (2) and used for sliding in the direction of entering and exiting the carriage door opening, a bearing optical axis (4) horizontally connected between the two longitudinal sliding assemblies (3), and two pulleys (5) used for connecting a door leaf and connected to the bearing optical axis (4) in a sliding manner; two groups of guide assemblies (6) for guiding the sliding of the pulley (5) are arranged at the lower part of the large bottom plate (2); the guide assembly (6) comprises a guide rail (60) fixedly connected to the lower part of the large bottom plate (2) along the length direction of the large bottom plate (2), a guide strut (61) vertically and fixedly connected to the pulley (5), and a guide roller (62) connected to the guide strut (61) and in rolling fit with the guide rail (60); the guide rail (60) is a strip-shaped groove with a downward opening, one end of the guide rail close to the large bottom plate (2) is an opening end, and the other end of the guide rail is in arc transition in the direction vertical to the length direction of the large bottom plate (2); and one end of each guide rail (60) which is close to each other is provided with an extension plate (600), and the extension plates (600) are fixedly connected to the large bottom plate (2).

2. A single-axis dual pulley sliding plug door system according to claim 1, wherein: the longitudinal sliding assembly (3) comprises a U-shaped side hanging seat (30) with an opening facing downwards and fixedly connected to the large bottom plate (2), a longitudinal sliding shaft (31) horizontally supported in the opening of the side hanging seat (30), and a side sliding hanging seat (32) sleeved on the longitudinal sliding shaft (31); the axis of the longitudinal sliding shaft (31) is parallel to the direction of getting in and out of the door opening of the carriage; the bearing optical axis (4) is connected to the two side sliding hanging seats (32).

3. A single-axis dual pulley sliding plug door system according to claim 2, wherein: the lower part of the large bottom plate (2) is provided with a middle linear guide assembly (7) for guiding the sliding of the bearing optical axis (4).

4. A single-axis dual pulley sliding plug door system according to claim 3, wherein: the middle linear guide assembly (7) comprises a linear guide rail (70) fixedly connected to the lower part of the large bottom plate (2), and a middle hanging seat (71) with the upper part slidably connected to the linear guide rail (70) and the lower part fixedly connected to the bearing optical axis (4).

5. A single-axis dual pulley sliding plug door system according to claim 4, wherein: linear grooves are formed in two sides of the linear guide rail (70), a sliding sleeve (710) is fixedly connected to the upper portion of the middle hanging seat (71), the sliding sleeve (710) is in sliding fit with the linear guide rail (70), the sliding sleeve (710) is U-shaped, a linear bulge is arranged on the inner side of an opening of the sliding sleeve (710) in a protruding mode, and the linear bulge is matched with the linear grooves.

6. A single-axis dual pulley sliding plug door system according to claim 5, wherein: a supporting beam (40) is connected between the two side sliding hanging seats (32).

7. A single-axis dual pulley sliding plug door system according to claim 6, wherein: the middle hanging seat (71) is provided with a connecting plate (711), and the connecting plate (711) is fixedly connected to the supporting beam (40).