Pit door lock device of large-height elevator and unlocking method of pit door lock device

Abstract

The invention discloses a pit door lock device of a large-height elevator and an unlocking method thereof.The pit door lock device comprises a plate body, the plate body is provided with a fixing shaft, the fixing shaft can move left and right, the fixing shaft is rotationally connected with a lock block, the lock block can rotate along the axis of the fixing shaft, the lock block comprises a protruding part, the plate body is fixedly provided with a limiting plate, the limiting plate comprises a folded plate, and the folded plate is provided with an end. The end is located at the left end of the folded plate and abuts against the right end of the protruding part to limit the protruding part to move towards the right side, the protruding part rotates clockwise along the axis of the fixing shaft and is separated from the end so that the protruding part can move towards the right side, and a connecting block is fixedly installed on the side, away from the protruding part, of the locking block. According to the pit door lock device of the large-height elevator and the unlocking method of the pit door lock device, an elevator door of a pit can be conveniently unlocked.

Description

Technical Field

[0001] The present invention relates to the technical field of elevators, and more specifically, to a pit door lock device for a high-rise elevator and an unlocking method thereof. Background Art

[0002] With the development of domestic industrial parks, there are more and more elevators with large opening heights and widths. The pits of elevators in industrial parks are generally too deep. For the original unlocking method of the pit designed for ordinary passenger elevators, after maintenance personnel enter the pit, it is difficult for them to reach the lock position due to its high position, which has deficiencies. Summary of the Invention

[0003] The purpose of the present invention is to overcome the above-mentioned deficiencies of the prior art, and to provide a pit door lock device for a high-rise elevator and an unlocking method thereof, which facilitate unlocking the elevator door in the pit.

[0004] To achieve the above purpose, the present invention adopts the following technical solutions: A pit door lock device for a high-rise elevator includes a plate body, on which a fixed shaft is installed. The fixed shaft can move left and right. The fixed shaft is rotatably connected with a lock block, and the lock block can rotate along the axis of the fixed shaft. The lock block includes a protruding portion. A limiting plate is fixedly installed on the plate body. The limiting plate includes a folding plate, and the folding plate is provided with an end portion located at the left end of the folding plate. The end portion abuts against the right end of the protruding portion to limit the rightward movement of the protruding portion. The protruding portion rotates clockwise along the axis of the fixed shaft and separates from the end portion, so that the protruding portion can move to the right. A connecting block is fixedly installed on the side of the lock block away from the protruding portion; It also includes a door lock, which includes a core shaft that can rotate along its own axis. A rotating block is fixedly installed on the core shaft. The rotating block is connected with a first rope and a second rope. One end of the second rope is connected with the connecting block, and the other end is connected with the rotating block; It also includes a guide wheel and a winding wheel. The guide wheel is located below the door lock, and the position of the winding wheel is lower than that of the door lock. One end of the first rope is connected with the rotating block, and the other end bypasses the bottom of the guide wheel and is connected with the winding wheel.

[0005] The present invention is further configured such that a torsion spring is connected between the fixed shaft and the lock block. When the fixed shaft is at the left extreme position and the torsion spring is in a free state, the end portion abuts against the right end of the protruding portion. The rotating block rotates clockwise along the axis of the core shaft to pull down the second rope, so that the protruding portion rotates clockwise along the axis of the fixed shaft, and the torsion spring is tightened.

[0006] The present invention is further configured such that the door lock is installed on the door body, and the lock port of the door lock faces the side of the door body away from the rotating block.

[0007] The present invention is further configured such that the folding plate is further provided with an inclined surface portion, which is located on the right side of the end portion, and the inclined surface portion gradually slopes downward along the horizontal rightward direction.

[0008] The present invention is further configured such that the winding wheel can rotate along its own axis, the winding wheel can wind the first rope body counterclockwise, the winding wheel is fixedly installed with a plug board, the plug board is fixedly installed with a slider, the slider is installed with a sliding seat, the sliding seat is located above the winding wheel, the sliding seat is provided with a sliding surface, the sliding surface is concentric with the winding wheel, the slider can move along the sliding surface, the slider is installed with a moving plate, the moving plate is inserted into the slider, and the moving plate can move radially along the sliding surface; further included is a fixed seat. When the convex portion is at the left extreme position, the winding wheel is wound. When the convex portion rotates clockwise along the axis of the fixed shaft until it separates from the end portion, the moving plate extends radially outward along the sliding surface, and the right side of the moving plate can abut against the fixed seat.

[0009] The present invention is further configured such that rollers II are installed on both sides of the moving plate, and the rollers II can roll along the inner wall of the slider.

[0010] The present invention is further configured such that a roller I is installed at the bottom of the slider, and the roller I can roll along the sliding surface.

[0011] The present invention is further configured such that when the right side of the moving plate abuts against the fixed seat, the slider is located on the side of the center line L along the counterclockwise direction of the winding wheel.

[0012] The present invention also adopts the following technical solution: An unlocking method for the bottom pit door lock device of a large-height elevator, including the following steps:

[0013] ① Rotate the winding wheel counterclockwise to tighten the first rope body. The first rope body pulls down the rotating block. The rotating block rotates clockwise and pulls down the second rope body. The second rope body pulls down the connecting block. The lock block rotates clockwise, and the convex portion separates from the end portion;

[0014] ② The upper end of the moving plate is pulled out of the slider, the moving plate is in close contact with the fixed seat, and the door body is pulled open;

[0015] ③ During the process of pulling open the door body, the tension of the first rope body decreases, the acting force between the moving plate and the fixed seat decreases, the moving plate moves downward under the action of gravity and disengages from the fixed seat, so that the lock block can return to the state where its length direction is horizontally arranged under the action of the torsion spring.

[0016] In summary, the present invention has the following beneficial effects:

[0017] 1. By arranging the first rope body and the second rope body, the unlocking distance is lengthened, which is convenient for elevator maintenance personnel to unlock and then pull open the elevator door after entering the bottom pit.

[0018] 2. By pressing the moving plate against the limiting surface, the rotation of the winding wheel is restricted, so that the convex portion and the end portion are kept in the separated state. Because the operator has sufficient time to stand near the door body and pull open the door body, the operation convenience of the operator is improved.

[0019] 3. When the moving plate is in a state of being in close contact with the limiting surface, by setting the slider on the side of the midline L along the counterclockwise direction of the winding wheel, after the acting force between the right side of the moving plate and the fixed seat is reduced, the slider moves slightly to the left along the sliding surface under the action of gravity, so as to facilitate the separation of the moving plate from the fixed seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic diagram of an embodiment;

[0021] Figure 2 is Figure 1 an enlarged view of part A in

[0022] Figure 3 is Figure 1 an enlarged view of part B in

[0023] Figure 4 is an installation sectional view of the winding wheel in the embodiment;

[0024] Figure 5 is a sectional view of the plug board in the embodiment;

[0025] Figure 6 is a schematic diagram of a state where the lock block rotates in the embodiment.

[0026] Reference numerals: door body 1, door lock 11, core shaft 111, rotating block 112, support plate 2, guide wheel 21, first rope 3, second rope 31, fixing plate 4, shaft body 41, bearing 42, winding wheel 43, extension body 431, mounting hole 4311, ladder 5, plate body 6, fixed shaft 61, lock block 611, convex portion 6111, connecting block 612, limiting plate 62, folding plate 621, end portion 6211, inclined surface portion 6212, plug board 7, plug rod 71, sliding seat 8, first limiting portion 81, second limiting portion 82, sliding surface 83, slider 9, first roller 91, moving plate 92, second roller 921, support rod 922, fixed seat 93, limiting surface 931. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0028] As Figures 1 - 6 shown, this embodiment discloses a bottom pit door lock device for a large-height elevator, including a plate body 6 at the top, a support plate 2 at the bottom, and a door body 1 located between the plate body 6 and the support plate 2. There are two door bodies 1, and the height of the door body 1 is more than 2M, belonging to the door of a large-height elevator.

[0029] As shown Figure 2 in FIG. 1, a fixed shaft 61 is installed on the plate body 6. The fixed shaft 61 can move left and right. The fixed shaft 61 is fixedly connected to the door body 1. When the fixed shaft 61 moves, the door body 1 is driven to move synchronously.

[0030] A lock block 611 is rotatably connected to the fixed shaft 61. The lock block 611 can rotate along the axis of the fixed shaft 61. A torsion spring is connected between the fixed shaft 61 and the lock block 611. The torsion spring is sleeved on the fixed shaft 61. One end of the torsion spring is fixed to the fixed shaft 61, and the other end is fixed to the lock block 611. In the free state of the torsion spring, the length direction of the lock block 611 is arranged horizontally. The lock block 611 includes a protrusion 6111.

[0031] A limiting plate 62 is fixedly installed on the plate body 6. The limiting plate 62 includes a folding plate 621 on the right side. The folding plate 621 is provided with an end portion 6211 and an inclined surface portion 6212. The end portion 6211 is located at the left end of the folding plate 621. The inclined surface portion 6212 gradually inclines downward along the horizontal rightward direction. The inclined surface portion 6212 is located on the right side of the end portion 6211.

[0032] When the protrusion 6111 moves to the left extreme position, the end portion 6211 abuts against the right end of the protrusion 6111 to limit the protrusion 6111 from moving to the right. At this time, the right door body 1 cannot be pulled open to the right. When the protrusion 6111 rotates clockwise along the axis of the fixed shaft 61 and separates from the end portion 6211 ( Figure 6 as shown in FIG. 2), so that the protrusion 6111 can move to the right, thereby opening the door body 1.

[0033] As shown Figure 2 in FIG. 3, a connecting block 612 is fixedly installed on the side of the lock block 611 away from the protrusion 6111.

[0034] When the fixed shaft 61 is at the left extreme position and the torsion spring is in the free state, the end portion 6211 abuts against the right end of the protrusion 6111. The rotating block 112 rotates clockwise along the axis of the core shaft 111 to pull down the second rope body 31, so that the protrusion 6111 rotates clockwise along the axis of the fixed shaft 61, and the torsion spring is tightened.

[0035] As shown Figure 1 、 Figure 2 in FIGS. 4 and 5, a door lock 11 is installed on the right door body 1. The door lock 11 includes a core shaft 111. The core shaft 111 can rotate along its own axis. A rotating block 112 is fixedly installed on the core shaft 111. The rotating block 112 is connected to a second rope body 31. One end of the second rope body 31 is connected to the connecting block 612, and the other end is connected to the rotating block 112. The lock port of the door lock 11 faces the side of the door body 1 away from the rotating block 112. The staff outside the elevator can rotate the core shaft 111 to pull down the connecting block 612, so that the lock block 611 rotates clockwise, thereby separating the protrusion 6111 from the end portion 6211.

[0036] The rotating block 112 is also connected to a first rope body 3. One end of the first rope body 3 is connected to the rotating block 112, and the other end bypasses the bottom of the guide wheel 21 and is connected to the winding wheel 43. The guide wheel 21 is located below the door lock 11, and the position of the winding wheel 43 is lower than that of the door lock 11.

[0037] By winding the first rope body 3 with the winding wheel 43, the first rope body 3 pulls down the door lock 11 to make the door lock 11 rotate clockwise, thereby pulling down the second rope body 31.

[0038] As Figure 3 、 4 shown, the winding wheel 43 can rotate along its own axis. The winding wheel 43 is installed with a shaft body 41 through a bearing 42. The shaft body 41 passes through the winding wheel 43, and a fixing plate 4 is installed on the shaft body 41. The fixing plate 4 is installed on the wall.

[0039] As Figure 3 shown, the first rope body 3 is wound into the winding wheel 43 from the bottom of the winding wheel 43, and the winding wheel 43 rotates counterclockwise to wind the first rope body 3. As Figures 3 - 5 shown, the winding wheel 43 is provided with an extension body 431. The extension body 431 is provided with a mounting hole 4311. A plug board 7 is fixedly installed in the mounting hole 4311. The plug board 7 includes two side inserting rods 71. One of the inserting rods 71 is inserted into the mounting hole 4311 and fixed, and the other inserting rod 71 is inserted with a sliding block 9. The inserting rod 71 is fixedly connected to the sliding block 9, and a sliding seat 8 is installed on the sliding block 9. Specifically, the sliding seat 8 is located above the winding wheel 43. The sliding seat 8 is provided with a first limiting portion 81, a second limiting portion 82, and a sliding surface 83. The sliding surface 83 is located between the first limiting portion 81 and the second limiting portion 82, and the sliding surface 83 is concentric with the winding wheel 43. A first roller 91 is installed at the bottom of the sliding block 9, and the first roller 91 can roll along the sliding surface 83.

[0040] As Figure 3 shown, the sliding block 9 is installed with a moving plate 92. The moving plate 92 is inserted into the upper end of the sliding block 9, and the moving plate 92 can move radially along the sliding surface 83. Specifically, two second rollers 921 are installed on both sides of the moving plate 92, and the second rollers 921 can roll along the inner wall of the sliding block 9.

[0041] Combined with Figure 1 、 Figure 3, further including a fixed seat 93. When the convex part 6111 is at the left extreme position, the winding wheel 43 winds the rope. When the convex part 6111 rotates clockwise along the axis of the fixed shaft 61 and separates from the end part 6211, the moving plate 92 extends radially outward along the sliding surface 83, and the right side of the moving plate 92 can abut against the fixed seat 93. The fixed seat 93 includes a limiting surface 931. Under the action of the torsion spring, the first rope 3 remains taut, so that the right side of the moving plate 92 presses against the limiting surface 931. The moving plate 92 and the limiting surface 931 prevent the moving plate 92 from retracting into the slider 9, so that the convex part 6111 and the end part 6211 remain separated. This operation is completed after the operator climbs the ladder 5.

[0042] The moving plate 92 is provided with a support rod 922. The support rod 922 extends out of the slider 9 to facilitate the operator to pull out the moving plate 92. A corresponding groove for the support rod 922 to extend and slide is provided on the slider 9.

[0043] As Figure 3 shown, when the right side of the moving plate 92 abuts against the fixed seat 93, the slider 9 is located on the side of the midline L along the counterclockwise direction of the winding wheel 43. At this time, the first rope 3 is in a tensioned state. As Figure 6 shown, the connection point of the rotating block 112 and the second rope 31 is located above the mandrel 111, and the guide wheel 21 is located below the right side of the rotating block 112. The length of the first rope 3 between the rotating block 112 and the guide wheel 21 is L2. When the door body 1 is pulled to the right, as the rotating block 112 moves to the right, assuming that the first rope 3 continues to be taut, the minimum length of the first rope 3 between the rotating block 112 and the guide wheel 21 decreases to L1. That is, when the door body 1 moves to the right, the tension of the first rope 3 becomes smaller. At this time, as Figure 3 shown, the acting force between the right side of the moving plate 92 and the fixed seat 93 decreases, and the moving plate 92 moves downward under the action of gravity and disengages from the fixed seat 93, so that the lock block 611 can return to the state where its length direction is horizontally arranged under the action of the torsion spring. When the door body 1 moves from the right side of the folding plate 621 to the left, the inclined surface part 6212 can lift the convex part 6111, so that the convex part 6111 is stuck into the left side of the end part 6211. The length of L1 is greater than 2M, and the angle α in the figure is 8 degrees - 12 degrees to ensure that the first rope 3 releases tension.

[0044] The unlocking method of the bottom pit door lock device of the above-mentioned high-rise elevator includes the following steps:

[0045] ① As Figure 2 , Figure 3 shown, rotate the plug 7 counterclockwise to tighten the first rope 3 by the winding wheel 43. The first rope 3 pulls down the rotating block 112. The rotating block 112 rotates clockwise and pulls down the second rope 31. The second rope 31 pulls down the connecting block 612, and the lock block 611 rotates clockwise, and the convex part 6111 disengages from the end part 6211 ( Figure 6 shown).

[0046] ②Pull out the upper end of the moving plate 92 from the slider 9 through the support rod 922. After releasing the support rod 922, the moving plate 92 is in close contact with the limiting surface 931, restricting the rotation of the winding wheel 43, so as to keep the convex part 6111 and the end part 6211 in a separated state. At this time, the operator has sufficient time to stand near the door body 1 and pull open the door body 1.

[0047] ③During the process of pulling open the door body 1, the tension of the first rope 3 decreases, and the acting force between the right side of the moving plate 92 and the fixed seat 93 decreases. The moving plate 92 moves downward under the action of gravity and disengages from the fixed seat 93, so that the lock block 611 can return to the state where its length direction is horizontally arranged under the action of the torsion spring. At the same time, since the slider 9 is located on the side of the center line L along the counterclockwise direction of the winding wheel 43, after the acting force between the right side of the moving plate 92 and the fixed seat 93 decreases, the slider 9 moves slightly to the left along the sliding surface 83, thus facilitating the disengagement of the moving plate 92 from the fixed seat 93.

[0048] The above is only the preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions falling within the idea of the present invention belong to the protection scope of the present invention. It should be pointed out that for those of ordinary skill in the art, several improvements and refinements made without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A pit door locking device for a high-height elevator, characterized in that: The invention comprises a plate body (6), wherein the plate body (6) is provided with a fixed shaft (61), wherein the fixed shaft (61) can move left and right, wherein the fixed shaft (61) is rotatably connected to a locking block (611), wherein the locking block (611) can rotate along the axis of the fixed shaft (61), wherein the locking block (611) comprises a protruding portion (6111), wherein the plate body (6) is fixedly provided with a limiting plate (62), wherein the limiting plate (62) comprises a folding plate (621), wherein the folding plate (621) is provided with an end portion (6211), wherein the fixing plate (611) is provided with a fixing plate (621). The end portion (6211) is located at the left end of the folding plate (621), the end portion (6211) abuts against the right end of the protruding portion (6111) to limit the protruding portion (6111) from moving to the right, the protruding portion (6111) rotates clockwise along the axis of the fixed shaft (61) and separates from the end portion (6211), so that the protruding portion (6111) can move to the right, and a connecting block (612) is fixedly installed on the side of the locking block (611) away from the protruding portion (6111); The door lock (11) further comprises a core shaft (111), wherein the core shaft (111) is capable of rotating along its own axis, a rotating block (112) is fixedly mounted on the core shaft (111), the rotating block (112) is connected to a rope body 1 (3) and a rope body 2 (31), one end of the rope body 2 (31) is connected to the connecting block (612), and the other end is connected to the rotating block (112); It also includes a guide wheel (21) and a reel (43), wherein the guide wheel (21) is located below the door lock (11), and the reel (43) is located below the door lock (11); one end of the rope body (3) is connected to the rotating block (112), and the other end passes around the bottom of the guide wheel (21) and is connected to the reel (43).

2. A pit door lock device for a high-height elevator according to claim 1, characterized in that: A torsion spring is connected between the fixed shaft (61) and the locking block (611). When the fixed shaft (61) is located at the left extreme position and the torsion spring is in a free state, the end portion (6211) abuts against the right end of the protruding portion (6111), and the rotating block (112) rotates clockwise along the axis of the core shaft (111) to pull down the rope body 2 (31), thereby causing the protruding portion (6111) to rotate clockwise along the axis of the fixed shaft (61), and the torsion spring is tightened.

3. The pit door locking device of a high-height elevator according to claim 1, characterized in that: The door lock (11) is installed on the door body (1), and the lock opening of the door lock (11) is oriented toward a side of the door body (1) away from the rotating block (112).

4. The pit door locking device of a high-height elevator according to claim 1, characterized in that: The folding plate (621) is also provided with an inclined portion (6212), and the inclined portion (6212) is located on the right side of the end portion (6211), and the inclined portion (6212) gradually inclines downward in a horizontal rightward direction.

5. The pit door locking device of a high-height elevator according to claim 1, characterized in that: The winding wheel (43) can rotate along its own axis, and the winding wheel (43) can reel in the rope body (3) counterclockwise. The winding wheel (43) is fixedly installed with a plug plate (7), and the plug plate (7) is fixedly installed with a slider (9). The slider (9) is installed with a slide seat (8), and the slide seat (8) is located above the winding wheel (43). The slide seat (8) is provided with a sliding surface (83), and the sliding surface (83) is concentric with the winding wheel (43). The slider (9) can move along the sliding surface (83). The slider (9) is installed with a moving plate (92), and the moving plate (92) is inserted into the slider (9), and the moving plate (92) can move radially along the sliding surface (83); It also includes a fixed seat (93). When the protrusion (6111) is located at the left extreme position, the winding wheel (43) is wound up. When the protrusion (6111) rotates clockwise along the axis of the fixed shaft (61) until it is separated from the end (6211), the movable plate (92) extends radially outward along the sliding surface (83), and the right side of the movable plate (92) can abut against the fixed seat (93).

6. A pit door locking device for a high-height elevator according to claim 5, characterized in that: Roller 2 (921) is installed on both sides of the movable plate (92), and the roller 2 (921) can roll along the inner wall of the sliding block (9).

7. The pit door locking device of a high-height elevator according to claim 5, characterized in that: A roller one (91) is installed at the bottom of the sliding block (9), and the roller one (91) can roll along the sliding surface (83).

8. The pit door locking device of a high-height elevator according to claim 5, characterized in that: When the right side of the movable plate (92) is in contact with the fixed seat (93), the sliding block (9) is located on the counterclockwise side of the center line L along the winding wheel (43).

9. The method for unlocking the pit door lock device of a high-height elevator according to claim 5, characterized in that: The steps include: ① The reel (43) is rotated counterclockwise to tighten the rope body 1 (3), the rope body 1 (3) pulls down the rotating block (112), the rotating block (112) rotates clockwise and pulls down the rope body 2 (31), the rope body 2 (31) pulls down the connecting block (612), the locking block (611) rotates clockwise, and the protrusion (6111) is separated from the end (6211); ② The upper end of the movable plate (92) is pulled out of the slider (9), and the movable plate (92) is tightly attached to the fixed seat (93), and the door body (1) is pulled open; ③ During the process of opening the door body (1), the tension of the rope body (3) decreases, the force between the movable plate (92) and the fixed seat (93) decreases, and the movable plate (92) moves downward under the action of gravity and disengages from the fixed seat (93), so that the locking block (611) can return to its horizontal setting state along its length direction under the action of the torsion spring.

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