Fence door lock of construction hoist

Abstract

The utility model discloses a fence door lock of a construction elevator, relates to the field of elevators, and solves the problem that the conventional door lock is easy to deform gradually after collision, so that the door lock is invalid. According to the technical scheme, the fence door lock of the building hoist comprises an impact part fixedly installed on a cage and a locking part fixedly installed on a door frame, the impact part comprises an impact plate and an installation part arranged on one plate face of the impact plate, the impact plate is fixedly installed on the side, close to the door frame, of the cage through the installation part, and the locking part is fixedly installed on the door frame. The collision plate is vertically arranged, and the bottom of the collision plate is bent towards one side of the mounting piece to form an obtuse angle; the locking component comprises a support fixedly installed on the door frame, the support is provided with a rotating shaft, a limiting piece is installed on the rotating shaft, one end of the limiting piece is bent, and the other end of the limiting piece is provided with a roller. The control device is used for controlling opening and closing of the fence door, the fence door can be controlled to be opened when the cage is located at the first floor position, and the fence door cannot be opened when the cage is located at the non-first floor position.

Description

Technical Field

[0001] The utility model relates to the field of elevators, in particular to a fence door lock for a construction elevator. Background Art

[0002] The fence door locks of traditional construction hoists are mostly castings, which are prone to brittle fracture when impacted, resulting in door lock failure. The fence door lock has a complex structure and high cost, but is not very reliable. Sometimes the cage is not at the first floor, and the fence can be opened, causing great safety hazards. Sometimes the cage is already at the first floor, and the fence cannot be opened normally, causing great inconvenience.

[0003] The patent with application publication number CN 108252595 A discloses a door lock device for a cage, including a cage and a movable door movably connected to the cage, a lock buckle is provided on the front edge of the cage, the lock buckle is tilted downward from front to back, a lock seat is provided on the front edge of the movable door, a lock hook is connected to the middle shaft of the lock seat, a curved hook is provided at the front end of the lock hook, and the curved hook abuts against the lock buckle. Every time the door lock device is opened and closed, the curved hook and the lock buckle will collide, not only making a loud noise, but also the curved hook and the lock buckle are prone to gradual deformation, resulting in the problem that the lock buckle cannot effectively fix the curved hook. The patent with authorization announcement number CN 208700377 U discloses a cage door lock, including a stop plate and a door lock seat, the stop plate is fixed on the cage door, the stop plate is provided with a serrated slot, the door lock seat is fixed on the cage, the door lock seat is provided with a door knife adapted to the slot through the rotation of the shaft sleeve, and the rotating door knife can be embedded in or out of the slot, thereby realizing the locking and opening of the cage door. The door blade and the slot of the cage door lock are easily deformed after multiple collisions, resulting in the problem that the slot cannot effectively fix the door blade. The patent with the authorization number CN 218145261 U relates to a door lock structure installed on the cage, which realizes the opening and closing of the cage door through the cooperation of the card block and the card slot. The card block and the card slot are easily deformed after multiple collisions, resulting in the situation that the card block and the card slot cannot effectively achieve locking. Utility Model Content

[0004] The utility model provides a construction hoist fence door lock, which solves the problem that the existing door lock is easy to be gradually deformed after collision, resulting in the failure of the door lock.

[0005] The technical solution adopted by the utility model is: a construction elevator fence door lock, comprising an impact component fixedly mounted on a cage, and a locking component fixedly mounted on a door frame, the impact component comprising an impact plate and a mounting member arranged on a plate surface of the impact plate, the impact plate being fixedly mounted on a side of the cage close to the door frame through the mounting member, the impact plate being arranged vertically, and the bottom of the impact plate being bent at an obtuse angle toward one side of the mounting member; the locking component comprising a support fixedly mounted on the door frame, the support being provided with a rotating shaft, a limiting member being mounted on the rotating shaft, and one end of the limiting member being bent. A roller is installed at the other end, and the range of rotation of the limit member around the rotating shaft is divided into a locking area and a non-locking area. An elastic reset member is arranged between the limit member and the rotating shaft or the support to make the limit member in the locking area; when the limit member is located in the locking area, the bent end of the limit member is located in the lifting and lowering movement range of the fence door when opening and closing and abuts against the fence door, and the roller is located in the lifting and lowering movement range of the impact plate; when the limit member is located in the non-locking area, the limit member is located outside the lifting and lowering movement range of the fence door, and the roller is located outside the lifting and lowering movement range of the impact component and abuts against the impact plate.

[0006] In order to simplify the structure of the rotating shaft and ensure that the limiting member can rotate flexibly around the rotating shaft, further: the rotating shaft is a first bolt, a section of the screw rod of the first bolt away from the head is provided with an external thread and a nut, a section of the screw rod close to the head is a bare rod section, and the limiting member is located at the bare rod section of the screw rod; or, the rotating shaft is the first bolt, and a spacer sleeve is provided between the screw rod of the first bolt and the limiting member.

[0007] In order to reduce the impact between the roller and the impact plate, further: a buffer ring is arranged on the outer side of the roller.

[0008] The following provides a roller installation structure on a limiter. Specifically: a through hole is set at one end of the limiter, and the roller is installed at the through hole of the limiter through a second bolt, a section of the screw rod of the second bolt away from the head is provided with an external thread and a nut, a section of the screw rod close to the head is a bare rod section, the roller is located in the bare rod section of the screw rod, and the bare rod section of the second bolt cooperates with the roller; or, a spacer is set between the screw rod of the second bolt and the roller.

[0009] Specifically, the elastic reset member is a torsion spring, which is sleeved on the outer side of the rotating shaft. In order to prevent the torsion spring from falling off, further, retaining rings are respectively arranged at both ends of the torsion spring, and the retaining rings are penetrated through the rotating shaft.

[0010] In order to avoid the problem that the roller is stuck in the upper end of the impact component due to excessive descent of the cage and the impact component, further: the top of the impact plate is bent at an obtuse angle toward the side of the mounting part.

[0011] In order to facilitate the installation of the impact component and ensure the strength of the impact component, specifically: the mounting piece in the impact component is a plate, the mounting piece is perpendicular to the impact plate and fixed to the back side of the contact area between the roller and the impact plate, and the mounting piece is provided with at least two mounting holes. For example, the impact plate and the mounting piece are both steel plates, and the mounting piece is welded and fixed to the impact plate.

[0012] In order to facilitate adjustment of the installation position of the impact component, further: the installation hole on the installation piece is a waist-shaped hole, and the length direction of the waist-shaped hole is horizontal.

[0013] The beneficial effects of the utility model are as follows: a roller is installed at one end of the limiter, and the bottom of the impact plate is bent at an obtuse angle toward one side of the mounting member. When the impact plate descends, it can contact the roller and gradually push the limiter to rotate around the rotating shaft, reducing the impact force of the impact plate on the roller, so that the bent end of the limiter can smoothly rotate from the locking area to the non-locking area, thereby releasing the lock on the fence door. The rolling cooperation between the impact plate and the roller reduces the friction during the contact between the two. In addition, one side of the bottom mounting member of the impact plate is bent at an obtuse angle, which is conducive to reducing the deformation caused by the collision. As long as the limiter is not completely transferred from the locking area to the non-locking area, the fence door can be effectively locked. Therefore, the installation accuracy of the limiter is not required to be high, and the locking is reliable. After the cage leaves the first floor, under the action of the elastic reset member, the limiter is in the locking area, so that the fence door lock cannot rise and open, preventing the fence door from opening and people or objects from entering the cage passage and causing danger. When the cage is located on the first floor, the impact plate presses against the roller, so that the limiter is always located outside the lifting and lowering range of the fence door, and the locking component does not affect the opening and closing of the fence door. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 and Figure 2 It is a front view schematic diagram and a side view schematic diagram of the locking component in the utility model.

[0015] Figure 3 and Figure 4 It is a schematic diagram of the locked state and the unlocked state of the utility model.

[0016] Figure numerals: impact plate 1, mounting member 2, support 3, rotating shaft 4, limiting member 5, roller 6, fence door 7, second bolt 8, torsion spring 9, retaining ring 10. DETAILED DESCRIPTION

[0017] The fence of the construction hoist is provided with a door frame, and a fence door is provided at the door frame. The fence door can be opened to enter and exit the cage. The utility model is used to control the opening and closing of the fence door. When the cage is located at the first floor, the fence door is controlled to be in an openable state. When the cage is located at a position other than the first floor, the fence door is controlled to be in an unopenable state.

[0018] like Figures 1 to 4As shown in the figure, the construction hoist fence door lock of the utility model comprises an impact component fixedly mounted on the cage and a locking component fixedly mounted on the door frame. The impact component can be raised and lowered along the vertical direction with the cage. Figure 3 and Figure 4 , the impact component includes an impact plate 1 and a mounting member 2 arranged on a plate surface of the impact plate 1. The impact plate 1 is used to directly collide with the locking component. The mounting member 2 and the impact plate 1 can be an integral whole, that is, the mounting member 2 is a part of the impact plate 1, or the mounting member 2 and the impact plate 1 are two parts, and the mounting member 2 is fixedly installed on the impact plate 1. For example, the impact plate 1 and the mounting member 2 are both plates, generally steel plates, and the mounting member 2 is perpendicular to the impact plate 1 and welded to the impact plate 1. The mounting member 2 is used to fix the impact component to the cage, and can be welded or the mounting member 2 is provided with a mounting hole and fixed to the cage by bolts. In order to ensure that the impact component is firmly installed on the cage, the mounting member 2 is provided with at least two mounting holes and fixed by at least two bolts. In order to facilitate the adjustment of the installation position of the impact component, the mounting hole on the mounting member 2 is preferably a waist-shaped hole, and the length direction of the waist-shaped hole is horizontal. The impact plate 1 is fixedly installed on the side of the cage close to the door frame through the mounting member 2, and the impact plate 1 is arranged vertically to ensure that the impact plate 1 can contact the locking component as the cage descends. The bottom of the impact plate 1 is bent at an obtuse angle toward the side of the mounting member 2, and the bent edge is horizontal, ensuring that the impact plate 1 can accurately contact the locking component. At this time, the middle part of the impact plate 1 is arranged vertically, and the bottom of the impact plate 1. In order to avoid the problem that the cage and the impact component are excessively lowered, causing the roller 6 to be stuck in the upper end of the impact component, the top of the impact plate 1 is bent at an obtuse angle toward the side of the mounting member 2. The width and angle of the bend of the top and bottom of the impact plate 1 are preferably consistent, so that the top and bottom can be mixed. In order to increase the strength of the impact component, the mounting member 2 is preferably located on the back side of the contact area between the roller 6 and the impact plate 1, so that the mounting member 2 not only has the function of rotation and fixing, but also has the function of increasing the strength of the impact plate 1.

[0019] The locking component is installed on the door frame and cooperates with the impact component to realize the control of the opening and closing of the fence door 7. The locking component includes a support 3 fixedly installed on the door frame, the support 3 is provided with a rotating shaft 4, and the limiter 5 is installed on the rotating shaft 4. The support 3 is installed on the door frame, and the support 3 is generally a steel part and is installed on the door frame by bolts. There are generally two supports 3, which can support the rotating shaft 4 from two positions. One end of the limiter 5 is bent to limit the rise and opening of the fence door 7, and the other end is installed with a roller 6 to directly collide with the impact plate 1, thereby changing the position of the limiter 5. The axis direction of the rotation of the roller 6 is horizontal and perpendicular to the vertical plane corresponding to the middle of the impact plate 1. In order to reduce the impact between the roller 6 and the impact plate 1, a buffer ring is provided on the outside of the roller 6, and the buffer ring can be made of rubber or other wear-resistant materials. The limiting member 5 can rotate around the rotating shaft 4. The range of rotation of the limiting member 5 around the rotating shaft 4 is divided into a locking area and a non-locking area. When the limiting member 5 is in the locking area, the limiting member 5 can prevent the fence door 7 from rising and opening; when the limiting member 5 is in the non-locking area, the limiting member 5 will not prevent the fence door 7 from rising and opening. Figure 3 When the limiter 5 is in the locking area, the bent end of the limiter 5 is located within the lifting range of the fence door 7 when opening and closing and abuts against the fence door 7, so that the limiter 5 can prevent the fence door 7 from rising and opening, and the roller 6 is located within the lifting range of the impact plate 1, so that the impact plate 1 can touch the roller 6 when it descends. Figure 4 When the limit member 5 is located in the non-locking area, the limit member 5 is outside the lifting and lowering movement range of the fence door 7, and the limit member 5 will not hinder the fence door 7 from rising and opening. The roller 6 is located outside the lifting and lowering movement range of the impact component and abuts against the impact plate 1, so that the limit member 5 maintains the state of being located outside the lifting and lowering movement range of the fence door 7.

[0020] An elastic reset member is provided between the limit member 5 and the rotating shaft 4 or the support 3 to keep the limit member 5 in the locking area. The elastic reset member may be a tension spring, an elastic rope, etc. Figure 2 The elastic reset member is a torsion spring 9, which is sleeved on the outer side of the rotating shaft 4. In order to prevent the torsion spring 9 from falling off the rotating shaft 4, retaining rings 10 are respectively arranged at both ends of the torsion spring 9, and the retaining rings 10 are penetrated through the rotating shaft 4.

[0021] In order to simplify the structure of the rotating shaft 4, a bolt can be used as the rotating shaft 4. In order to ensure that the limiting member 5 can rotate flexibly around the rotating shaft 4, see Figure 2, the rotating shaft 4 is a first bolt, a section of the screw rod of the first bolt away from the head is provided with an external thread and a nut, a section of the screw rod close to the head is a bare rod section, the bare rod section is not provided with an external thread, and the limiter 5 is located in the bare rod section of the screw rod. Alternatively, the rotating shaft 4 is a first bolt, a spacer is provided between the screw rod of the first bolt and the limiter 5, and the spacer can prevent the external thread of the screw rod of the first bolt from affecting the flexible rotation of the limiter 5. The following provides a structure in which the roller 6 is installed on the limiter 5 by using a bolt as the rotating shaft of the roller 6. A through hole is set at one end of the limiting member 5, and the roller 6 is installed at the through hole of the limiting member 5 through the second bolt 8. In order to ensure that the roller 6 can flexibly rotate around the second bolt 8, an external thread is set at a section of the screw rod of the second bolt 8 away from the head and is equipped with a nut, and a section of the screw rod close to the head is a bare rod section. The roller 6 is located at the bare rod section of the screw rod, and the bare rod section of the second bolt 8 cooperates with the roller 6; or, a spacer is set between the screw rod of the second bolt 8 and the roller 6, and the spacer can prevent the external thread of the screw rod of the second bolt from affecting the flexible rotation of the roller 6.

Claims

1. A construction hoist fence door lock, comprising an impact component fixedly mounted on the cage, and a locking component fixedly mounted on the door frame, characterized in that: The impact component comprises an impact plate (1) and a mounting member (2) arranged on a plate surface of the impact plate (1); the impact plate (1) is fixedly mounted on a side of the cage close to the door frame through the mounting member (2); the impact plate (1) is arranged vertically, and the bottom of the impact plate (1) is bent at an obtuse angle toward the mounting member (2); the locking component comprises a support (3) fixedly mounted on the door frame, the support (3) is provided with a rotating shaft (4), a limiting member (5) is mounted on the rotating shaft (4), one end of the limiting member (5) is bent, and a roller (6) is installed on the other end; the range of rotation of the limiting member (5) around the rotating shaft (4) is divided into a locking area and a non-locking area, and an elastic reset member for placing the limiting member (5) in the locking area is arranged between the limiting member (5) and the rotating shaft (4) or the support (3); When the limiting member (5) is located in the locking area, one end of the limiting member (5) in a bent shape is located within the lifting and lowering range of the fence door (7) when it is opened and closed and abuts against the fence door (7), and the roller (6) is located within the lifting and lowering range of the impact plate (1); When the limiting member (5) is located in the non-locking area, the limiting member (5) is located outside the lifting and lowering range of the fence door (7), and the roller (6) is located outside the lifting and lowering range of the impact component and abuts against the impact plate (1).

2. The construction hoist fence door lock according to claim 1, characterized in that: The rotating shaft (4) is a first bolt, a section of the screw rod of the first bolt away from the head is provided with an external thread and a nut, a section of the screw rod close to the head is a bare rod section, and the limiting member (5) is located in the bare rod section of the screw rod; or, the rotating shaft (4) is the first bolt, and a spacer is provided between the screw rod of the first bolt and the limiting member (5).

3. The construction hoist fence door lock as claimed in claim 1, characterized in that: A buffer ring is arranged on the outer side of the roller (6).

4. The construction hoist fence door lock as claimed in claim 1, characterized in that: A through hole is provided at one end of the limiting member (5), and the roller (6) is installed at the through hole of the limiting member (5) through a second bolt (8); a section of the screw rod of the second bolt (8) away from the head is provided with an external thread and is equipped with a nut, and a section of the screw rod close to the head is a bare rod section, and the roller (6) is located in the bare rod section of the screw rod, and the bare rod section of the second bolt (8) cooperates with the roller (6); or, a spacer is provided between the screw rod of the second bolt (8) and the roller (6).

5. The construction hoist fence door lock as claimed in claim 1, characterized in that: The elastic reset member is a torsion spring (9), and the torsion spring (9) is sleeved on the outer side of the rotating shaft (4).

6. The construction hoist fence door lock as claimed in claim 5, characterized in that: Retaining rings (10) are respectively arranged at both ends of the torsion spring (9), and the retaining rings (10) are penetrated through the rotating shaft (4).

7. The construction hoist fence door lock according to any one of claims 1 to 6, characterized in that: The top of the impact plate (1) is bent at an obtuse angle toward one side of the mounting member (2).

8. The construction hoist fence door lock according to any one of claims 1 to 6, characterized in that: The mounting member (2) in the impact component is a plate member, the mounting member (2) is perpendicular to the impact plate (1) and is fixed to the back side of the contact area between the roller (6) and the impact plate (1), and the mounting member (2) is provided with at least two mounting holes.

9. The construction hoist fence door lock as claimed in claim 8, characterized in that: The impact plate (1) and the mounting member (2) are both steel plates, and the mounting member (2) is welded and fixed to the impact plate (1).

10. The construction hoist fence door lock as claimed in claim 8, characterized in that: The mounting hole on the mounting member (2) is a waist-shaped hole, and the length direction of the waist-shaped hole is horizontal.

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