Landing door lock for construction elevator

Abstract

The utility model relates to a landing door lock for a construction elevator, which comprises a first fixing plate and a second fixing plate, and the first fixing plate and the second fixing plate can be arranged at an interval in the left-right direction; the door bolt is rotatably connected with the first fixing plate, and the other end of the door bolt is a swing end; the second fixing plate is provided with a lock groove with an opening in the upper portion, and the swing end of the bolt can be placed in the lock groove after the bolt swings. The electronic lock is arranged on the right fixing plate, a spring bolt of the electronic lock can stretch out and draw back in the front-back direction and can stretch out of the rear side wall of the lock groove, a lock hole is formed in the side, facing the spring bolt, of the swing end of the bolt, in the locking state, the spring bolt is inserted into the lock hole, the bolt cannot be separated from the lock groove, and in the unlocking state, the bolt can swing to be separated from the lock groove; the inductive switch is used for sensing whether the bolt is placed in the lock groove or not and outputting a signal. In the manufacturing and mounting process of the landing door lock, the left direction and the right direction of the fixing plate do not need to be distinguished additionally, so that the universality of the product is better, and the production and mounting efficiency is greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a door lock device, especially a floor door lock for a floor door of a construction elevator. BACKGROUND

[0002] In the current construction, construction elevators are mostly used for transporting workers and materials. In order to ensure the safety of construction, construction elevator protective doors are installed at the edge of each floor and the contact part with the construction elevator. In order to ensure the safety of workers, the entrance and exit must be locked by the floor door lock. The door lock system of the existing construction elevator is mostly directly controlled by workers. If the workers forget or try to save time and do not perform the locking operation, the protective door of the floor elevator entrance will not be closed or will be opened in advance when the elevator car has not arrived, thereby causing accidents such as falling from the stair entrance to occur in the construction site, affecting the safety production of construction.

[0003] In view of the foregoing status quo, a Chinese utility model patent with the patent number ZL202321759763.5 (publication number CN220301955U) discloses a floor door lock of a magnetic induction type construction elevator, which includes a first mounting seat and a second mounting seat for being respectively installed on two opening and closing floor doors, a door stop lever is rotatably connected to the first mounting seat, and a fixing member for fixing the door stop lever is connected to the second mounting seat. An opening is provided at one end of the door stop lever away from the first mounting seat, an electronic lock capable of being inserted into the opening for locking is provided on the second mounting seat, an electromagnetic induction switch is provided on the second mounting seat, a magnet corresponding to the position of the electromagnetic induction switch is connected to the door stop lever, a floor controller is connected to the electromagnetic induction switch through a signal line, and the floor controller is also connected to the electronic lock through a signal line.

[0004] Although the floor door lock for the construction elevator described above can eliminate some safety hazards, it still has the following defects:

[0005] 1. The electronic lock is provided on the second mounting seat and is higher than the locking groove position of the fixing member, and is located on the left side or the right side of the locking groove position of the fixing member, which makes the first mounting seat and the second mounting seat have to be installed in a certain order. If the electronic lock is located on the left side of the fixing member, the first mounting seat can only be installed on the right side floor door, and the second mounting seat is installed on the left side floor door. If the electronic lock is located on the right side of the fixing member, the first mounting seat can only be installed on the left side floor door, and the second mounting seat is installed on the right side floor door. This makes the installation and use of the floor door lock not very convenient, and the product production and installation have to distinguish the left and right directions, which is not good for the universality of the product and the production and installation efficiency is low.

[0006] 2. The opening is located on the door stop at the end furthest from the first mounting base. The electronic lock is mounted on the second mounting base, and its bolt can be inserted into the opening for locking. This places high demands on the assembly of the landing door lock, requiring the opening to be as close as possible to the bolt of the electronic lock. However, the landing doors on construction floors are generally poorly made, and there may be cases where the left and right distances between the landing doors are larger. This makes it possible that the aforementioned landing door lock may fail to lock the landing door, resulting in poor fault tolerance.

[0007] In conclusion, the aforementioned door locks can be further improved. Utility Model Content

[0008] The technical problem to be solved by this utility model is to provide a construction elevator landing door lock with a more reasonable structural design and convenient installation, which is in view of the above-mentioned existing technology. The installation positions of the left and right fixing plates of the landing door lock on the landing door can be interchanged.

[0009] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: a landing door lock for a construction elevator, including a first fixed plate and a second fixed plate, which can be arranged at intervals in the left and right direction; a door bolt, one end of which is rotatably connected to the first fixed plate, and the other end of which is a swing end; the second fixed plate is provided with a lock groove with an opening at the top, and the swing end of the door bolt can rest in the lock groove after swinging; the feature is that it also includes an electronic lock, which is provided on the second fixed plate, the bolt of which can extend and retract in the front and back direction and can extend from the rear side wall of the lock groove, and the swing end of the door bolt has a lock hole on the side facing the bolt for the bolt to be inserted. In the locked state, the bolt is inserted into the lock hole and the door bolt cannot be disengaged from the lock groove. In the unlocked state, the door bolt can swing out of the lock groove; a sensor switch is used to sense whether the door bolt is resting in the lock groove and output a signal.

[0010] The swing end does not refer to a single endpoint, but rather to the portion of the bolt that is far from the first fixed plate and can swing freely, including the portion of the bolt resting in the lock groove. The sensor switch can detect whether the bolt is resting in the lock groove and output a signal. This signal can be sent to the control system, which then signals the electronic lock to lock the bolt. The control system can also signal that the elevator can leave the floor at that location.

[0011] Preferably, the aforementioned inductive switch is a micro switch, a magnetic inductive switch, or an infrared inductive switch, and the inductive switch is located on the rear side wall of the lock slot. Placing the inductive switch on the rear side wall allows for a more compact structure; this arrangement is suitable for magnetic inductive switches or infrared inductive switches. Of course, the inductive switch can also be located at the bottom of the lock slot, but this would make the overall shape protrude downwards; this arrangement is more suitable for micro switches.

[0012] As an improvement, the above-mentioned inductive switch has two, which are arranged left and right. When the first fixed plate is located on the left side of the second fixed plate, the inductive switch on the left side is suitable for sensing the door bolt; when the first fixed plate is located on the right side of the second fixed plate, the inductive switch on the right side is suitable for sensing the door bolt. Even if the first fixed plate and the second fixed plate are exchanged left and right, the inductive switch can accurately sense whether the door bolt is placed in the lock slot or not.

[0013] As a preferred, the above-mentioned lock slot is through in the left and right direction, which is beneficial to the door bolt to swing to the horizontal state both to the left and to the right.

[0014] In order to improve the fault tolerance of the lock, the above-mentioned lock hole is a strip hole arranged along the length direction of the door bolt. In this way, even if the spacing between the first fixed plate and the second fixed plate is displaced, it can ensure that the lock tongue can be locked into the lock hole.

[0015] As an improvement, the above-mentioned first fixed plate is fixed with a limiting baffle for limiting the downward swing of the door bolt. The limiting baffle can also be used as a handle, and the limiting baffle avoids the door bolt to rotate randomly by 360 degrees, which supports the door bolt. In order to facilitate the formation of the lock slot and provide a suitable installation position for the electronic lock, further improvement, the above-mentioned second fixed plate is fixed with a lock plate, the lock plate has a bottom plate and a top cover, the front part of the bottom plate has an upwardly extending lock edge, the rear part of the bottom plate has a accommodating cavity for accommodating the electronic lock, the top cover covers the upper end of the accommodating cavity, the bottom plate, the lock edge and the front wall of the accommodating cavity together form the lock slot, and the inductive switch is installed in the accommodating cavity. The lock edge constitutes the front side wall of the lock slot, and the front wall of the accommodating cavity constitutes the rear side wall 41 of the lock slot 4.

[0016] As an improvement, the above-mentioned lock edge has a front guide wall inclined upwardly and forwardly, and the front edge of the top cover has a rear guide wall inclined upwardly and rearwardly. The arrangement of the front and rear guide walls facilitates the entry of the swinging door bolt into the lock slot.

[0017] As a preferred, one end of the above-mentioned door bolt is connected with a rotating shaft, the rotating shaft passes through the first fixed plate and is connected with a first handle on the back of the first fixed plate. A second handle is arranged on the door bolt, which facilitates the user to control the swing of the door bolt in the construction elevator.

[0018] Further improvement, the above-mentioned second fixed plate is provided with an emergency lock hole, the emergency lock hole is used for inserting a hand tool and connecting with the rear end of the lock tongue of the electronic lock to drive the lock tongue to retract. This structure makes the door bolt have an emergency opening function. When power failure or emergency occurs (person is trapped in the construction elevator), professional maintenance personnel can insert a special triangular key from the emergency lock hole of the second fixed plate and connect with the lock tongue to drive the lock tongue to retract and open the door.

[0019] Further improvement, also includes a position sensor for sensing the position of the construction elevator and output signal. Position sensor can be infrared sensor, hall sensor, etc., only after the position sensor sensing the construction elevator in position, electromagnet gives the door opening signal, release the lock of the bolt, the landing door with the bolt can be opened. Position sensor can be installed to the first fixed plate or the second fixed plate or the electromagnet or independent first fixed plate and second fixed plate and set in other position, such as can be set on the landing door.

[0020] Compared with the prior art, the advantages of the landing door lock are that the locking and control mode of the landing door lock is similar to that of the existing landing door lock, that is, the advantages of the existing landing door lock are retained. In addition, the locking tongue of the electromagnetic lock is arranged on the rear wall of the lock slot and can be extended in the front-rear direction, and the side of the swing end of the bolt facing the locking tongue is provided with a lock hole for inserting the outwardly extended locking tongue, so that the lock slot is not blocked in the left-right direction by the electronic lock, and the first fixed plate and the second fixed plate can be interchanged in the left-right position. When the first fixed plate is installed on the left landing door and the second fixed plate is installed on the right landing door, when the first fixed plate is installed on the right landing door and the second fixed plate is installed on the left landing door, so that the landing door lock does not need to distinguish the left-right direction of the fixed plate during manufacturing and installation, the universality of the product is better, and the production and installation efficiency is greatly improved. Because the lock hole is arranged on the side of the bolt facing the locking tongue, the lock hole can be arranged as a strip-shaped hole, so that even if there is a certain displacement or a large size error between the first fixed plate and the second fixed plate, the locking tongue can be locked into the lock hole, which greatly reduces the precision requirement of installation, makes the adaptability of the product stronger, the matching degree higher, and the installation efficiency greatly improved. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a front perspective structural schematic view (locked state) of the embodiment of the utility model;

[0022] Figure 2 It is a back perspective structural schematic view (locked state) of the embodiment of the utility model;

[0023] Figure 3 It is a lateral sectional view of the embodiment of the utility model;

[0024] Figure 4 It is a sectional view of the utility model in the top view state;

[0025] Figure 5 It is a three-dimensional schematic view of the second fixed plate part in the embodiment of the utility model. DETAILED DESCRIPTION

[0026] The utility model will be further described in detail below in combination with the embodiment of the drawings.

[0027] As Figures 1-5 shown, it is the preferred embodiment of the utility model floor door lock.

[0028] A floor door lock for construction elevator, comprising

[0029] First fixed plate 1 and second fixed plate 2, the first fixed plate 1, second fixed plate 2 can be arranged in the left and right direction interval;

[0030] Door bolt 3, one end of the door bolt 3 is rotatably connected with the first fixed plate 1, the other end of the door bolt 3 is a swing end;One end of the door bolt 3 is connected with the rotating shaft 32, the rotating shaft 32 passes through the first fixed plate 1 and is connected with the first handle 3a on the back of the first fixed plate 1, the second handle 3b is arranged on the door bolt 3.

[0031] The second fixed plate 2 is provided with a lock slot 4 with an upper opening, and the swing end of the door bolt 3 can be placed in the lock slot 4 after swinging;The swing end does not mean a certain endpoint, but the part of the door bolt that can swing freely away from the first fixed plate, including the part of the door bolt placed in the lock slot. As preferred, the lock slot 4 penetrates along the left and right directions, and the door bolt 3 can swing to the horizontal state to the left and to the horizontal state to the right. The first fixed plate 1 is fixed with a limiting baffle 11 for limiting the downward swing of the door bolt 3.

[0032] Electronic lock 5, arranged on the second fixed plate 2, the lock tongue 51 of the electronic lock 5 can be telescopic along the front and back direction and can be extended from the rear side wall 41 of the lock slot 4, the side of the swing end of the door bolt 3 towards the lock tongue 51 is provided with a lock hole 31 for inserting the extended lock tongue 51, the lock tongue 51 is inserted into the lock hole 31 in the locked state, the lock hole 31 is a strip-shaped hole arranged along the length direction of the door bolt 3, and the lock hole 31 can be a closed hole or a U-shaped slot. The door bolt 3 cannot be separated from the lock slot 4, and the door bolt 3 can swing away from the lock slot 4 in the unlocked state;The electronic lock 5 can be a solenoid valve lock including static armature, coil winding wound outside the static armature and moving armature (also called telescopic rod) several parts, the lock tongue is arranged on the moving armature, the telescopic of the lock tongue is realized by on-off electricity, which is a conventional structure and can be directly purchased in the market. The electronic lock can also be a conventional electric lock with a bevel lock tongue, which can be driven by a motor.

[0033] Inductive switch 6 for sensing whether the door bolt 3 is placed in the lock slot 4 and outputting a signal. The inductive switch 6 is a micro switch or a magnetic inductive switch or an infrared inductive switch, and the inductive switch 6 is arranged on the rear side wall 41 of the lock slot. If it is sensed that the door bolt 3 has been placed in the lock slot 4, it means that the floor door has been locked, and then the system can control the elevator lifting operation after receiving the signal.

[0034] The two induction switches 6 are arranged at left and right intervals in the embodiment. The induction switches in the embodiment are magnetic induction switches, such as Hall switches, and the door bolt 3 is provided with an induction part 9 for the magnetic induction switches.

[0035] The second fixed plate 2 is fixed with a lock plate 7, which has a bottom plate 71 and a top cover 72. The front part of the bottom plate 71 has an upwardly extending lock edge 73, and the rear part of the bottom plate 71 has a receiving cavity 74 for accommodating the electronic lock 5. The top cover 72 covers the upper end of the receiving cavity 74. The bottom plate 71, the lock edge 73, and the front wall of the receiving cavity 74 jointly form the lock slot 4, and the induction switch 6 is installed in the receiving cavity 74. The lock edge 73 has a front guide wall 731 that is upwardly and forwardly inclined, and the front edge of the top cover 72 has a rear guide wall 721 that is upwardly and backwardly inclined.

[0036] The second fixed plate 2 is provided with an emergency lock hole 20 for inserting a hand tool 10 and connecting with the rear end of the lock tongue 51 of the electronic lock 5 to drive the lock tongue 51 to retract.

[0037] Of course, a position sensor (such as a photoelectric switch or a stroke limit switch or a Hall magnetic induction sensor, etc.) can also be included for sensing the position of the construction elevator and outputting a signal. The sensor is not shown in the embodiment.

[0038] It should be noted that in the description of the embodiment, the terms "front", "rear", "left", "right", "inner", "outer", "upper", and "lower" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model. The terms "mounting", "connection", and "connection" should be broadly understood, for example, can be fixed connection, can also be detachable connection, or integral connection; can be directly connected, or indirectly connected through an intermediate medium; can be the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

Claims

1. A landing door lock for construction elevator, comprising a first fixed plate (1) and a second fixed plate (2), which are arranged in left and right directions; a door bolt (3), one end of which is rotatably connected with the first fixed plate (1), and the other end is a swing end; the second fixed plate (2) is provided with a lock slot (4) with an upper opening, and the swing end of the door bolt (3) can be placed in the lock slot (4) after swinging; characterized in that further comprising an electronic lock (5) provided on the second fixed plate (2), the locking tongue (51) of which can be extended and retracted in the front and back directions and can be extended from the rear side wall (41) of the lock slot (4), and the side of the swing end of the door bolt (3) facing the locking tongue (51) is provided with a lock hole (31) for inserting the extended locking tongue (51), in the locked state, the locking tongue (51) is inserted into the lock hole (31), and the door bolt (3) cannot be separated from the lock slot (4), and in the unlocked state, the door bolt (3) can swing away from the lock slot (4); an inductive switch (6) for sensing whether the door bolt (3) is placed in the lock slot (4) and outputting a signal.

2. The landing door lock for construction elevators according to claim 1, characterized in that: The inductive switch (6) is a micro switch or a magnetic induction switch or an infrared induction switch, and the inductive switch (6) is arranged on the rear side wall (41) of the lock slot.

3. The landing door lock for construction elevators according to claim 1, characterized in that: The inductive switch (6) has two, which are arranged in left and right directions.

4. The landing door lock for construction elevators according to any one of claims 1 to 3, characterized in that: The lock slot (4) penetrates in the left and right directions, and the door bolt (3) can swing to the horizontal state to the left and to the horizontal state to the right.

5. The landing door lock for construction elevators according to claim 1, characterized in that: The lock hole (31) is a strip-shaped hole arranged along the length direction of the door bolt (3).

6. The landing door lock for construction elevators according to claim 1, characterized in that: The first fixed plate (1) is fixed with a limiting baffle (11) for limiting the downward swing of the door bolt (3).

7. The landing door lock for construction elevators according to claim 1, characterized in that: The second fixed plate (2) is fixed with a lock plate (7), which has a bottom plate (71) and a top cover (72), the front part of the bottom plate (71) has an upwardly extending lock edge (73), and the rear part of the bottom plate (71) has a receiving cavity (74) for accommodating the electronic lock (5), the top cover (72) covers the upper end of the receiving cavity (74), and the bottom plate (71), the lock edge (73), and the front wall of the receiving cavity (74) together form the lock slot (4), and the inductive switch (6) is installed in the receiving cavity (74).

8. The landing door lock for construction elevators according to claim 7, characterized in that: The lock edge (73) has a front guide wall (731) inclined upwardly and forwardly, and the front edge of the top cover (72) has a rear guide wall (721) inclined upwardly and rearwardly.

9. The landing door lock for construction elevators according to claim 1, characterized in that: One end of the door bolt (3) is connected with a rotating shaft (32), the rotating shaft (32) penetrates through the first fixed plate (1) and is connected with a first handle (3a) on the back of the first fixed plate (1), and the door bolt (3) is provided with a second handle (3b).

10. The landing door lock for construction elevators according to claim 1, characterized in that: An emergency lock hole (20) is opened on the second fixed plate (2), the emergency lock hole (20) is used for inserting a hand tool (10) and connecting with the rear end of the locking tongue (51) of the electronic lock (5) to drive the locking tongue (51) to retract.

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