CN212376500U - Door machine system - Google Patents

Abstract

The utility model relates to an emergency exit technical field especially relates to a door machine system. The gantry crane system comprises a gantry crane beam, a door body, a roller mechanism and an electric control lock mechanism, wherein a guide rail is arranged on the gantry crane beam; the roller mechanism comprises a mounting plate and at least two rollers, and the rollers are rotatably mounted on the mounting plate and matched with the guide rails; the electric control lock mechanism comprises a movable plate and a locking piece, the movable plate is arranged on the gantry crane beam, a locking groove is formed in the movable plate, and the locking piece is arranged on the mounting plate; the mounting position of the door body on the mounting plate is located on a perpendicular bisector of a connecting line of at least two rollers, so that the weight of the door body is transmitted to each roller in a balanced manner, the rollers are enabled to bear equal force, the rollers are guaranteed to be stably matched with the guide rails, the mounting plate is guaranteed to be parallel to the guide rails, the mounting plate and a locking piece on the mounting plate can move stably, accurate locking of a locking groove on the locking piece and a movable plate can be guaranteed, the failure rate is reduced, and the stability and the safety of a door machine system are guaranteed.

Description

Door machine system

Technical Field

The utility model relates to an emergency exit technical field especially relates to a door machine system.

Background

The existing door machine system is generally provided with a door lock hook which is arranged on a door body, and in the door closing process, the door lock hook is matched with an electric control lock to realize door closing locking along with the movement of the door body.

Therefore, a door phone system is needed to solve the above problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a gantry crane system to the problem that the fault rate is high, the security is low among the gantry crane system among the solution prior art improves the whole operating stability and the security of gantry crane system.

In order to realize the purpose, the following technical scheme is provided:

a door engine system, comprising:

the door machine beam is provided with a guide rail;

the roller mechanism comprises a mounting plate and at least two rollers, the rollers are rotatably mounted on the mounting plate and matched with the guide rails, the mounting plate is connected with the door body, and the door body is positioned on a perpendicular bisector of a connecting line of the at least two rollers at the mounting position of the mounting plate;

the electric control lock mechanism comprises a movable plate and a locking piece, wherein the movable plate is installed on the gantry crane beam, a locking groove is formed in the movable plate, the locking piece is installed on the installation plate, and the roller can move along the guide rail so that the locking piece is locked with the locking groove.

As the preferred scheme of the gantry crane system, the roller mechanism further comprises an anti-overturning wheel, the anti-overturning wheel is rotatably installed on the installation plate, the roller and the anti-overturning wheel are arranged at intervals from top to bottom, and the anti-overturning wheel can be abutted to the guide rail.

As a preferable scheme of the gantry crane system, the installation position of the overturn-preventing wheel on the installation plate is adjustable, so that the roller and the overturn-preventing wheel are suitable for the guide rails with different thicknesses.

As a preferred scheme of the door machine system, the roller mechanism further comprises a door body hanging piece, the door body is fixedly installed on the door body hanging piece, the door body hanging piece is installed on the installation plate, and the door body hanging piece can lift and rotate relative to the installation plate so as to adjust the height and the levelness of the door body.

As a preferable scheme of the gantry crane system, the roller mechanism further comprises a connecting piece, the connecting piece comprises a first connecting part and a second connecting part which are arranged vertically to each other, and the first connecting part is mounted on the mounting plate and can be lifted relative to the mounting plate; the second connecting part is rotatably connected with the door body hanging piece.

As a preferable scheme of the gantry crane system, the first connecting portion is located on a perpendicular bisector of a connecting line of at least two of the rollers.

As a preferred scheme of the gantry crane system, the electrically controlled lock mechanism further comprises a fixed plate and a movable plate driver, the fixed plate is mounted on the gantry crane beam, the movable plate driver is mounted on the fixed plate, and an output end of the movable plate driver is connected with the movable plate and can drive the movable plate to move upwards, so that the locking piece is separated from the locking groove.

As a preferred scheme of the gantry crane system, the electrically controlled lock mechanism further comprises a positioning element and a locking plate, the positioning element is fixedly mounted on the movable plate, the locking plate is rotatably mounted on the fixed plate, and the locking plate is provided with a first position locked with the locking element and a second position supported below the positioning element.

As a preferred scheme of the gantry crane system, the gantry crane system further comprises a driving mechanism, the driving mechanism is mounted on the gantry crane beam, an output end of the driving mechanism is in transmission connection with the roller mechanism to drive the roller mechanism to move along the guide rail, and the driving mechanism is matched with the movable plate driver to enable the locking piece and the locking groove to be locked or unlocked.

As the preferred scheme of door machine system, actuating mechanism includes a body driver, action wheel, follows driving wheel and hold-in range, the action wheel with set up from the driving wheel interval, the hold-in range is around establishing the action wheel with follow driving wheel is last, the mounting panel with hold-in range fixed connection, the output of a body driver with the action wheel transmission is connected and can be driven the hold-in range rotates, so that the mounting panel removes.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model provides a gantry crane system, which comprises a gantry crane beam, a door body, a roller mechanism and an electric control lock mechanism, wherein the gantry crane beam is provided with a guide rail; the roller mechanism comprises a mounting plate and at least two rollers, and the rollers are rotatably mounted on the mounting plate and matched with the guide rails; the electric control lock mechanism comprises a movable plate and a locking piece, the movable plate is arranged on the gantry crane beam, a locking groove is formed in the movable plate, and the locking piece is arranged on the mounting plate; the mounting position of the door body on the mounting plate is located on a perpendicular bisector of a connecting line of at least two rollers, so that the weight of the door body is transmitted to each roller in a balanced manner, the rollers are enabled to bear equal force, the rollers are guaranteed to be stably matched with the guide rails, the mounting plate is guaranteed to be parallel to the guide rails, the mounting plate and a locking piece on the mounting plate can move stably, accurate locking of a locking groove on the locking piece and a movable plate can be guaranteed, the failure rate is reduced, and the stability and the safety of a door machine system are guaranteed.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required to be used in the description of the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the contents of the embodiments of the present invention and the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a gantry crane system provided in an embodiment of the present invention;

fig. 2 is a schematic view of a partial structure of a gantry crane system provided in an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a gantry beam provided in an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a first roller mechanism according to an embodiment of the present invention in one direction;

fig. 5 is an exploded schematic view of a mounting plate and a door body hanger provided in the embodiment of the present invention;

fig. 6 is a schematic structural view of a first roller mechanism according to an embodiment of the present invention in another direction;

fig. 7 is a schematic structural view of a second roller mechanism according to an embodiment of the present invention in one direction;

fig. 8 is a schematic structural view of a second roller mechanism according to an embodiment of the present invention in another direction;

fig. 9 is a schematic structural view of an electric control lock mechanism according to an embodiment of the present invention in a locked state;

fig. 10 is a schematic structural view of the electric control lock mechanism provided in the embodiment of the present invention in the unlocked state.

Reference numerals:

1-gantry beam; 11-a guide rail;

2-a door body;

3-a roller mechanism; 31-a mounting plate; 311-a first elongated hole; 312-a second elongated aperture; 32-a roller; 33-overturn prevention wheels; 34-a door body pendant; 35-a connector; 351-a first connection; 352-second connecting part; 36-a timing belt clip;

4-an electric control lock mechanism; 41-a movable plate; 411-lock slot; 42-a lock; 43-a fixed plate; 44-movable plate drive; 45-a positioning member; 46-a locking plate; 461-latch hook; 47-a travel switch;

5-a drive mechanism; 51-door actuator; 52-driving wheel; 53-driven wheel; 54-synchronous belt.

Detailed Description

In order to make those skilled in the art better understand the technical solution of the present invention, the technical solution of the present invention is further described below by referring to the drawings and the detailed description.

In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the directions or positional relationships based on the directions or positional relationships shown in the drawings, or the directions or positional relationships that are usually placed when the product is used, and are only for convenience of description of the present invention, and do not indicate or imply that the device or element indicated must have a specific direction, be constructed and operated in a specific direction, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first", "second", and the like are used for descriptive purposes only or to distinguish between different structures or components and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection or a removable connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1 to 3, the present embodiment provides a gantry crane system, which includes a gantry crane beam 1, a door body 2, a roller mechanism 3, and an electrically controlled lock mechanism 4, wherein the gantry crane beam 1 is provided with a guide rail 11; the roller mechanism 3 comprises a mounting plate 31 and at least two rollers 32, the rollers 32 are rotatably mounted on the mounting plate 31 and matched with the guide rails 11, the door body 2 is mounted on the mounting plate 31, and the mounting position of the door body 2 on the mounting plate 31 is positioned on a perpendicular bisector of a connecting line of the at least two rollers 32; the electric control lock mechanism 4 comprises a movable plate 41 and a locking member 42, the movable plate 41 is mounted on the door beam 1, a locking groove 411 is formed on the movable plate 41, the locking member 42 is mounted on the mounting plate 31, and the roller 32 can move along the guide rail 11, so that the locking member 42 is locked with the movable plate 41.

In short, the door machine system provided by this embodiment, the mounting position of the door body 2 on the mounting plate 31 is located on the perpendicular bisector of the connecting line of at least two rollers 32, make the weight of the door body 2 transmit to each roller 32 in a balanced manner, make the roller 32 equally stressed, ensure that the roller 32 is stably matched with the guide rail 11, thereby ensure that the mounting plate 31 can keep parallel with the guide rail 11, the mounting plate 31 and the locking piece 42 thereon can move stably, thereby can ensure that the locking piece 42 is accurately locked with the locking groove 411 on the movable plate 41, reduce the failure rate, and ensure the stability and the safety of the door machine system.

Preferably, as shown in fig. 1, the number of the door bodies 2 is two, and the driving mechanism 5 can drive the two door bodies 2 to move close to or away from each other to achieve a door closing or opening function.

Optionally, the number of the roller mechanisms 3 is several, and one door body 2 is matched with the guide rail 11 through several roller mechanisms 3, so as to ensure that the door body 2 can stably move along the guide rail 11.

Illustratively, as shown in fig. 1, one door body 2 is matched with the guide rail 11 through two roller mechanisms 3, so that on one hand, the door body 2 can be ensured to move smoothly along the guide rail 11, and on the other hand, the levelness and height of the door body 2 can be adjusted conveniently through the two roller mechanisms 3.

Preferably, as shown in fig. 4 in combination with fig. 2, in order to ensure that the roller mechanism 3 moves smoothly along the guide rail 11, the roller mechanism 3 further includes an anti-overturn wheel 33, the anti-overturn wheel 33 is rotatably mounted on the mounting plate 31, the guide rail 11 is located between the roller 32 and the anti-overturn wheel 33, and the anti-overturn wheel 33 abuts against the guide rail 11 to ensure the stability of the engagement of the roller mechanism 3 and the guide rail 11. Illustratively, the roller 32 is located above the anti-overturn wheel 33, the roller 32 is engaged with the guide rail 11, and the anti-overturn wheel 33 is abutted against the lower surface of the guide rail 11 to ensure the stability of the mounting plate 31, keep the mounting plate 31 parallel to the guide rail 11, and further ensure that the locking member 42 is locked with the locking groove 411.

Optionally, the position of the anti-tip wheel 33 on the mounting plate 31 is adjustable so that the position of the anti-tip wheel 33 is adjusted according to the thickness of the rail 11 and the requirement of the roller 32 to cooperate with the anti-tip wheel 33.

Illustratively, as shown in fig. 5 in combination with fig. 4, the mounting plate 31 is provided with a first elongated hole 311, and the overturn-preventing wheel 33 is fixedly mounted at the first elongated hole 311 by a fastener. Preferably, the first elongated hole 311 is obliquely provided to enable the height and the left-right position of the overturn prevention wheel 33 to be adjusted as needed.

Further, as shown in fig. 5, in order to facilitate the installation of the door body 2 on the mounting plate 31, the roller mechanism 3 further includes a door body hanger 34, the door body 2 is installed on the door body hanger 34, the door body hanger 34 is installed on the mounting plate 31, and the installation position of the door body hanger 34 on the mounting plate 31 is located on a perpendicular bisector of a connecting line of the at least two rollers 32.

Preferably, the door hanger 34 can rotate up and down relative to the mounting plate 31 to adjust the height and the levelness of the door 2. Optionally, the roller mechanism 3 further includes a connecting member 35, and the connecting member 35 is used for connecting the door hanger 34 and the mounting plate 31.

Exemplarily, as shown in fig. 5, the connecting member 35 includes a first connecting portion 351 and a second connecting portion 352 perpendicular to each other, the first connecting portion 351 is mounted on the mounting plate 31 and can be lifted and lowered with respect to the mounting plate 31 to adjust the height of the door body 2; the second connection portion 352 is rotatably connected to the door hanger 34 so that the door hanger 34 can rotate with respect to the mounting plate 31 to adjust the levelness of the door 2.

Further, first connecting portion 351 is located the perpendicular bisector of the connecting line of two at least gyro wheels 32 to guarantee through first connecting portion 351 evenly transmit every gyro wheel 32 with the weight of the door body 2 on, make every gyro wheel 32 atress even, thereby guarantee that mounting panel 31 is parallel with guide rail 11, and then improve the accuracy of locking piece 42 position, reduce the fault rate of automatically controlled lock mechanism 4. In the present embodiment, two rollers 32 are mounted on one mounting plate 31, and the first connecting portion 351 is located on a perpendicular bisector of a connecting line of the two rollers 32.

Exemplarily, the first connecting portion 351 includes an adjusting screw, a gasket, and a nut, the adjusting screw is disposed on the gasket, the nut is in threaded connection with the adjusting screw, the nut is located above the gasket, and a lower end of the adjusting screw is fixedly connected with the second connecting portion 352. Be provided with the position of dodging that supplies adjusting screw installation on the mounting panel 31, when first connecting portion 351 and mounting panel 31 assemble, adjusting screw passes the position of dodging, and the gasket fender is established in the top of dodging the position, through the position of adjusting nut on adjusting screw to change the position of second connecting portion 352, change the height of door body pendant 34 promptly.

Optionally, in order to ensure the connection strength of the door hanger 34 and the mounting plate 31, the door hanger 34 and the mounting plate 31 are fixedly connected by fasteners at two sides of the connecting piece 35.

Specifically, as shown in fig. 5, a second elongated hole 312 is formed in the mounting plate 31, the second elongated hole 312 extends in the vertical direction, the two second elongated holes 312 are symmetrically disposed on two sides of the avoiding position, a through hole corresponding to the second elongated hole 312 is disposed on the door body hanger 34, and the two second elongated holes 312 are matched to enable the door body hanger 34 to be fixedly connected to the mounting plate 31 through a fastener when the door body hanger 34 rotates relative to the mounting plate 31.

Preferably, as shown in fig. 9-10, the electric control lock mechanism 4 further includes a fixed plate 43 and a movable plate driver 44, the fixed plate 43 is mounted on the door beam 1, the movable plate 41 is elevatably mounted on the fixed plate 43, the movable plate driver 44 is used for moving the movable plate 41 upward relative to the fixed plate 43, and further, the movable plate 41 can be lowered under the action of gravity to enable the movable plate 41 to have the locked position and the unlocked position. The movable plate driver 44 drives the movable plate 41 to ascend so that the movable plate 41 is located at the unlocking position, and the roller 32 can move in a direction away from the movable plate 41 to disengage the locking member 42 from the locking slot 411, so that the door body 2 is located at the door opening state.

The movable plate driver 44 is exemplarily an electromagnet, when the electromagnet is powered on, the movable plate 41 can be attracted to move upwards for unlocking, and when the electromagnet is powered off, the magnetic force of the electromagnet disappears, and the movable plate 41 can fall under the action of gravity.

In order to facilitate automatic control of opening and closing of the door body 2, as shown in fig. 1 and 2, the door machine system further includes a driving mechanism 5, an output end of the driving mechanism 5 is in transmission connection with the roller mechanism 3 and can drive the roller mechanism 3 to move along the guide rail 11, and the driving mechanism 5 is in linkage fit with the movable plate driver 44 to ensure that the locking piece 42 can be locked with or unlocked from the locking groove 411 when the driving mechanism 5 drives the roller mechanism 3 to move.

Preferably, the output end of the driving mechanism 5 is in transmission connection with at least one roller mechanism 3, and then all the roller mechanisms 3 are driven to move along the guide rail 11 through the connection between the roller mechanisms 3.

Preferably, the driving mechanism 5 includes a door body driver 51, a driving wheel 52, a driven wheel 53 and a synchronous belt 54, the driving wheel 52 and the driven wheel 53 are arranged at intervals, the synchronous belt 54 is wound on the driving wheel 52 and the driven wheel 53, the mounting plate 31 is fixedly connected with the synchronous belt 54, and an output end of the door body driver 51 is in transmission connection with the driving wheel 52 and can drive the synchronous belt 54 to rotate so as to move the mounting plate 31.

Further, as shown in fig. 2 in conjunction with fig. 4, the roller mechanism 3 further includes a timing belt clip 36, the timing belt clip 36 being mounted on the mounting plate 31, the timing belt clip 36 being able to be clamped and fixed to the timing belt 54.

In this embodiment, the number of the door bodies 2 is two, each door body 2 is connected with at least two roller mechanisms 3, the electric control lock mechanism 4 is located between two door bodies 2, the two adjacent roller mechanisms 3 on both sides of the electric control lock mechanism 4 are respectively provided with a locking piece 42, both sides of the movable plate 41 are respectively provided with a locking groove 411, the driving mechanism 5 drives the roller mechanisms 3 to move along the guide rail 11, and the locking pieces 42 on the roller mechanisms 3 can be locked with the locking grooves 411 on the same side. Two roller mechanisms 3 are connected to each door body 2, wherein the roller mechanism 3 on one side of the door body 2 close to the electric control lock mechanism 4 is clamped on the lower half circle of the annular synchronous belt 54 through a synchronous belt clamp 36, and the roller mechanism 3 on the other side of the door body 2 close to the electric control lock mechanism 4 is clamped and fixed on the upper half circle of the annular synchronous belt 54 through the synchronous belt clamp 36.

The present embodiment provides two types of roller mechanisms 3, such as the first roller mechanism 3 shown in fig. 6 and 4, a locking member 42 and a timing belt clip 36 are mounted on a mounting plate 31 in the roller mechanism 3, the roller mechanism 3 is fixedly connected with a timing belt 54 of a driving mechanism 5, and the roller mechanism 3 serves as a driving member to drive the door body 2 to move along the guide rail 11; in the second roller mechanism 3 shown in fig. 7 to 8, the timing belt clip 36 is not provided on the roller mechanism 3, and the roller mechanism 3 serves as a follower to smoothly move the door body 2.

Further, as shown in fig. 9-10, in order to realize the locking function when the door 2 is opened and the locking function when the door 2 is closed, the electrically controlled locking mechanism 4 further includes a positioning member 45 and a locking plate 46, the positioning member 45 is mounted on the movable plate 41, the locking plate 46 is rotatably mounted on the fixed plate 43, a locking hook 461 is disposed on the locking plate 46, and the locking hook 461 can be locked with the locking member 42.

The locking plate 46 has a first position locked with the locking member 42 and a second position supported below the positioning member 45, that is, the locking plate 46 has two functions, when the locking plate 46 is located at the first position, that is, the door body 2 is in a door closing state, the locking plate 46 is locked with the locking member 42, the movable plate 41 and the locking member 42 are also in a locking state, and double mechanical locking in the door closing state is realized; when the locking plate 46 is located at the second position, that is, the door body 2 is in the door opening state, the locking plate 46 can support the lower side of the positioning member 45, so as to prevent the movable plate 41 from falling, and thus, the mechanical locking in the door opening state is realized.

As shown in fig. 9, when the door 2 needs to be controlled to be closed, the driving mechanism 5 drives the roller mechanism 3 to drive the door 2 and the locking member 42 to move in the direction close to the electric control lock mechanism 4 until the door 2 is in the closed state, in this process, the locking member 42 can push the locking plate 46 to rotate to the first position of the locking plate 46, at this time, the locking member 42 is locked with the locking hook 461 on the locking plate 46, and the locking member 42 is located below the locking groove 411; since the locking plate 46 cannot continue to support the positioning member 45 on the movable plate 41, the movable plate 41 falls down and the locking groove 411 is locked with the locking member 42, thereby achieving dual mechanical locking in the closed state.

As shown in fig. 10, when it is required to control the opening of the door body 2, the movable plate driver 44 drives the movable plate 41 to move upward, the locking slot 411 is disengaged from the locking member 42, meanwhile, the driving mechanism 5 drives the roller mechanism 3 to drive the door body 2 and the locking member 42 to move in the direction away from the electrically controlled locking mechanism 4, the locking plate 46 rotates to the second position of the locking plate 46 to both sides under the action of its own gravity, at this time, the locking member 42 is disengaged from the locking hook 461, and the locking plate 46 is supported below the positioning member 45 of the movable plate 41, so as to prevent the movable plate 41 from falling down, thereby achieving mechanical locking in the door opening state.

In order to realize linkage matching between the movable plate driver 44 and the driving mechanism 5, the electronic control lock mechanism 4 further comprises a travel switch 47, the travel switch 47 abuts against the upper edge of the movable plate 41, when the movable plate 41 moves upwards, the travel switch 47 can be triggered, and then the driving mechanism 5 drives the roller mechanism 3 to drive the door body 2 and the locking piece 42 to be away from the electronic control lock mechanism 4, so as to realize the door opening function.

It should be noted that the foregoing is only a preferred embodiment of the present invention and the technical principles applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious modifications, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.

Claims (10)

1. A door operator system, comprising:

the door machine beam (1) and the door body (2), wherein the door machine beam (1) is provided with a guide rail (11);

the roller mechanism (3) comprises a mounting plate (31) and at least two rollers (32), the rollers (32) are rotatably mounted on the mounting plate (31), the rollers (32) are matched with the guide rail (11), the mounting plate (31) is connected with the door body (2), and the door body (2) is positioned on a perpendicular bisector of a connecting line of the at least two rollers (32) at the mounting position of the mounting plate (31);

automatically controlled latch mechanism (4), including fly leaf (41) and locking piece (42), fly leaf (41) are installed on door machine roof beam (1), be provided with locked groove (411) on fly leaf (41), locking piece (42) are installed on mounting panel (31), gyro wheel (32) can be followed guide rail (11) remove, so that locking piece (42) with locked groove (411) closure.

2. The gantry crane system according to claim 1, wherein the roller mechanism (3) further comprises an anti-overturning wheel (33), the anti-overturning wheel (33) is rotatably mounted on the mounting plate (31), the roller (32) and the anti-overturning wheel (33) are arranged at an interval from top to bottom, and the anti-overturning wheel (33) can abut against the guide rail (11).

3. A door system according to claim 2, characterized in that the mounting position of the anti-overturning wheel (33) on the mounting plate (31) is adjustable to adapt the roller (32) and the anti-overturning wheel (33) to the guide rail (11) of different thickness.

4. The door system according to claim 1, wherein the roller mechanism (3) further comprises a door body hanger (34), the door body (2) is fixedly mounted on the door body hanger (34), the door body hanger (34) is mounted on the mounting plate (31), and the door body hanger (34) can lift and rotate relative to the mounting plate (31) to adjust the height and the levelness of the door body (2).

5. The door system according to claim 4, wherein the roller mechanism (3) further comprises a connecting member (35), the connecting member (35) comprising a first connecting portion (351) and a second connecting portion (352) which are arranged perpendicularly to each other, the first connecting portion (351) being mounted on the mounting plate (31) and being capable of being lifted and lowered with respect to the mounting plate (31); the second connecting portion (352) is rotatably connected with the door body hanger (34).

6. A door system according to claim 5, characterized in that the first connection (351) is located on a perpendicular bisector of a connecting line of at least two of said rollers (32).

7. A door system as claimed in any one of claims 1 to 6, wherein said electric control lock mechanism (4) further comprises a fixed plate (43) and a movable plate driver (44), said fixed plate (43) is mounted on said door beam (1), said movable plate driver (44) is mounted on said fixed plate (43), an output end of said movable plate driver (44) is connected with said movable plate (41) and can drive said movable plate (41) to move upward to disengage said lock member (42) from said lock groove (411).

8. The door system as claimed in claim 7, wherein the electrically controlled lock mechanism (4) further comprises a positioning member (45) and a lock plate (46), the positioning member (45) is fixedly mounted on the movable plate (41), the lock plate (46) is rotatably mounted on the fixed plate (43), and the lock plate (46) has a first position locked with the lock member (42) and a second position supported below the positioning member (45).

9. The gantry crane system according to claim 7, further comprising a driving mechanism (5), wherein the driving mechanism (5) is mounted on the gantry crane beam (1), an output end of the driving mechanism (5) is in transmission connection with the roller mechanism (3) to drive the roller mechanism (3) to move along the guide rail (11), and the driving mechanism (5) is matched with the movable plate driver (44) to lock or unlock the locking piece (42) and the locking groove (411).

10. The door system as claimed in claim 9, wherein the driving mechanism (5) comprises a door driver (51), a driving wheel (52), a driven wheel (53) and a synchronous belt (54), the driving wheel (52) and the driven wheel (53) are arranged at intervals, the synchronous belt (54) is wound on the driving wheel (52) and the driven wheel (53), the mounting plate (31) is fixedly connected with the synchronous belt (54), and the output end of the door driver (51) is in transmission connection with the driving wheel (52) and can drive the synchronous belt (54) to rotate so as to enable the mounting plate (31) to move.

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