Elevator synchronous door blade assembly with lubrication structure

Abstract

The utility model relates to elevator door knife technical field, specifically disclose a kind of elevator synchronous door knife assembly with lubricating structure, including assembly frame, the inside installation of fixed bolt of assembly frame, the side wall of assembly frame is equipped with lubricating mechanism for the lubrication of door knife, the side of assembly frame is equipped with driving mechanism for the drive of door knife;The lubricating mechanism includes hinged piece, the hinged piece is equipped with two, two the hinged piece is evenly placed in the side wall of assembly frame, and the inner wall of two the hinged piece is inlayed with fixed bearing. Through the lubricating mechanism set, it can promote piston movement under the effect of the elasticity of compression spring itself, since solid lubricating oil is stored in the lubricating member, lubricating oil is subjected to pressure and enters the connecting cavity through the through hole, on the fixed bearing and fixed rod, and further actively lubricates the rotating stress part, which can effectively reduce wear.

Description

Technical Field

[0001] This utility model relates to the field of elevator door knife technology, and in particular to an elevator synchronous door knife assembly with a lubrication structure. Background Technology

[0002] The elevator synchronous door knife assembly is a crucial component of the elevator door system, responsible for achieving synchronized opening and closing of the elevator doors. It is a device used in elevator door systems, primarily composed of a door knife base plate, a traction device, and a four-bar linkage consisting of an active swing arm, a lower swing arm, a left blade, and a right door knife. Its main function is to ensure that the elevator car door and hall door remain synchronized during opening and closing, thereby improving the safety and stability of elevator operation.

[0003] Existing door cutters generally have complex structures, are difficult to manufacture, and have high costs. Their installation and maintenance are also somewhat difficult.

[0004] An existing patent (publication number: CN204675588U) discloses a synchronous door knife for elevators, which includes a door knife base plate, a left knife arm, a right knife arm, an upper knife arm connecting rod, a lower knife arm connecting rod, an upper connecting rod, and a transmission mechanism. The left and right knife arms, and the upper and lower knife arm connecting rods, are all mounted on the door knife base plate. The key feature is that the left and right knife arms are connected to the upper and lower knife arm connecting rods respectively via connecting shafts, forming a four-bar linkage. This four-bar linkage is driven by a slider via connecting rods to complete the opening and closing action of the door knife. Its synchronous door knife structure is compact, its operation is safe and reliable, and it provides ideal synchronization during door opening and closing, making it widely applicable.

[0005] To address the aforementioned issues, while existing patents offer solutions with compact door knife structures, reliable and safe operation, ideal synchronization during door opening and closing, and wide applicability, their door knives are not convenient for lubricating rotating parts during use. Over time, this leads to increased friction in these parts, resulting in a reduced lifespan for the door knife. Summary of the Invention

[0006] The purpose of this utility model is to provide an elevator synchronous door knife assembly with a lubrication structure, which can drive the piston to move under the elasticity of the compression spring. Since the lubrication component stores solid lubricating grease, the lubricating grease will enter the connecting cavity through the through hole under pressure, and actively lubricate the fixed bearing and fixed rod, thereby actively reducing wear and solving the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: an elevator synchronous door knife assembly with a lubrication structure, comprising an assembly frame, wherein fixing bolts are installed inside the assembly frame, a lubrication mechanism for lubricating the door knife is provided on the side wall of the assembly frame, and a drive mechanism for driving the door knife is provided on one side of the assembly frame.

[0008] The lubrication mechanism includes two hinges, both of which are mounted on the side wall of the assembly frame. The inner walls of both hinges are inlaid with fixed bearings. The inner walls of the fixed bearings are fixed with fixed rods that are fixedly connected to the assembly frame. One side of the fixed bearing is connected to a lubricating element that is fixedly connected to the assembly frame. The lubricating element has a connecting cavity inside that matches the fixed bearing.

[0009] Preferably, the inner wall of the lubricating component has a through hole communicating with the connecting cavity, and a piston is slidably connected to the right side inside the lubricating component.

[0010] Preferably, a compression spring is abutted against the right side of the piston, and a movable rod that is telescopically connected to the lubricating element is fixed to the side wall of the piston.

[0011] Preferably, both ends of the two hinge members are rotatably connected to two movable blade arms via bearings.

[0012] Preferably, the driving mechanism includes a connector, which is fixed to the upper surface of a movable blade arm. A hinge rod is fixed to the side wall of the connector, and a movable block is connected to the end of the hinge rod.

[0013] Preferably, the movable block has a limiting groove inside that slides and connects to the hinge rod, the outer surface of the movable block has a sliding groove opened in the inner wall of the assembly frame, and the side wall of the movable block is rotatably connected to a connecting rod.

[0014] Preferably, a fixing screw is installed inside each of the two movable blade arms, and a return spring is fixed to the end of the fixing screw.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. Through the lubrication mechanism, the piston can be driven to move under the elasticity of the compression spring. Since the lubrication component stores solid lubricating grease, the lubricating grease will enter the connecting cavity through the through hole under pressure, and actively lubricate the fixed bearing and fixed rod, thereby actively lubricating the rotating parts subjected to force, which can effectively reduce wear.

[0017] 2. Through the set drive mechanism, with the cooperation of the limit groove and the hinge rod, when the movable block moves horizontally, it drives the movable knife arm to move relative to each other. It can drive the two movable knife arms to move synchronously, ensuring that the movable knife arm and the door lock wheel of the landing door are in contact. Attached Figure Description

[0018] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 This is an overall structural view of the present invention;

[0020] Figure 2 This is a three-dimensional structural diagram of the hinge component of this utility model;

[0021] Figure 3 For the present utility model Figure 1 Enlarged view of A in the middle;

[0022] Figure 4 This is a half-sectional structural diagram of the lubricating component of this utility model.

[0023] Explanation of reference numerals in the attached figures:

[0024] 1. Assembly frame; 2. Fixing bolts; 3. Hinge; 31. Fixed bearing; 32. Fixing rod; 33. Lubricating component; 34. Connecting cavity; 35. Through hole; 36. Piston; 37. Compression spring; 38. Movable rod; 4. Movable cutter arm; 5. Connecting component; 51. Hinge rod; 52. Movable block; 53. Limiting groove; 54. Slide groove; 55. Connecting rod; 6. Return spring; 7. Fixing screw. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] This utility model provides a technical solution:

[0027] Please see Figures 1 to 4An elevator synchronous door knife assembly with a lubrication structure includes an assembly frame 1, a fixing bolt 2 installed inside the assembly frame 1, a lubrication mechanism for lubricating the door knife on the side wall of the assembly frame 1, and a drive mechanism for driving the door knife on one side of the assembly frame 1.

[0028] The lubrication mechanism includes two hinges 3, each mounted on the side wall of the assembly frame 1. A fixed bearing 31 is embedded in the inner wall of each hinge 3. A fixed rod 32, fixedly connected to the assembly frame 1, is fixedly attached to the inner wall of each fixed bearing 31. A lubricating element 33, also fixedly connected to the assembly frame 1, is connected to one side of the fixed bearing 31. A connecting cavity 34, matching the fixed bearing 31, is opened inside the lubricating element 33. A through hole 35, communicating with the connecting cavity 34, is opened on the inner wall of the lubricating element 33. A piston 36 is slidably connected to the right side of the lubricating element 33. A compression spring 37 is abutted against the right side of the piston 36. A movable rod 38, telescopically connected to the lubricating element 33, is fixed to the side wall of the piston 36. Two movable blade arms 4 are rotatably connected to both ends of the two hinges 3 via bearings.

[0029] By adopting the above technical solution, before using the elevator synchronous door knife assembly with lubrication structure, the assembly frame 1 is first placed on the elevator door frame and fixed by fixing bolts 2. Since the hinge 3 is driven to rotate and its internal fixed bearing 31 will bear a large rotational force, the fixed bearing 31 and the fixed rod 32 will wear a lot. The compression spring 37 installed in the lubricating component 33 will push the piston 36 to move under its own elasticity. Since the lubricating component 33 stores solid lubricating grease, the lubricating grease will enter the connecting cavity 34 through the through hole 35 under pressure, and then flow into the fixed bearing 31 and the fixed rod 32, thereby actively lubricating the rotating parts, which can effectively reduce wear. Furthermore, by pulling the movable rod 38, the filling port on the lubricating component 33 can be opened to add lubricating grease into the lubricating component 33, which facilitates subsequent automatic lubrication.

[0030] Specifically, such as Figure 1 , Figure 2 and Figure 3 As shown, the drive mechanism includes a connector 5, which is fixed to the upper surface of a movable cutter arm 4. A hinge rod 51 is fixed to the side wall of the connector 5, and a movable block 52 is connected to the end of the hinge rod 51. A limiting groove 53 is provided inside the movable block 52, which is slidably connected to the hinge rod 51. A sliding groove 54 is provided on the outer surface of the movable block 52, which is slidably connected to the inner wall of the assembly frame 1. A connecting rod 55 is rotatably connected to the side wall of the movable block 52. Fixing screws 7 are installed inside both movable cutter arms 4, and a return spring 6 is fixed to the end of the fixing screw 7.

[0031] By adopting the above technical solution, the connecting rod 55 and the elevator door operator are hinged together. When the door operator runs, it drives the connecting rod 55 to move, which in turn drives the movable block 52 to move horizontally in the slide groove 54. At this time, with the cooperation of the limiting groove 53 and the hinge rod 51, when the movable block 52 moves horizontally, it will drive the connecting piece 5 to move vertically. At this time, the vertical movement of the connecting piece 5 will drive the hinge piece 3 to rotate, which will drive the movable knife arm 4 to move relative to each other. It can drive the two movable knife arms 4 to move synchronously, ensuring that the movable knife arm 4 contacts the door lock wheel of the landing door, and thus opening the subsequent landing door synchronously. When the door operator continues to drive, it will drive the entire assembly frame 1 to move horizontally, opening the elevator door and the landing door synchronously. When the assembly frame 1 is driven to reset, under the elasticity of the reset spring 6, it will push the two movable knife arms 4 to reset synchronously, thus avoiding the elevator from colliding with the other landing door lock during operation. The fixing screw 7 ensures the fixing effect of the reset spring 6 and the movable knife arm 4.

[0032] Working principle: When the door operator is running, it drives the connecting rod 55, which in turn drives the movable block 52 to move horizontally in the slide groove 54. When the movable block 52 moves horizontally, the vertical movement of the connecting piece 5 will drive the hinge 3 to rotate, which will drive the movable knife arm 4 to move relative to each other, synchronously driving the two movable knife arms 4 to move, ensuring that the movable knife arm 4 and the door lock wheel of the landing door are in contact. When the door operator continues to drive, it will open the elevator door and the landing door synchronously. The compression spring 37 will push the piston 36 to move under its own elasticity. Since the lubricating component 33 stores solid lubricating grease, the lubricating grease will enter the connecting cavity 34 through the through hole 35 under pressure, and enter the fixed bearing 31 and the fixed rod 32, thereby actively lubricating the rotating force-bearing parts, which can effectively reduce wear. By pulling the movable rod 38, the filling port on the lubricating component 33 can be opened, and lubricating grease can be added into the lubricating component 33, which facilitates subsequent automatic lubrication. When the assembly frame 1 is driven to reset, the two movable knife arms 4 will be pushed to reset synchronously under the elasticity of the reset spring 6.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. An elevator synchronous door knife assembly with a lubrication structure, comprising an assembly frame (1), characterized in that: The assembly frame (1) is equipped with fixing bolts (2) inside, the side wall of the assembly frame (1) is provided with a lubrication mechanism for lubricating the door knife, and one side of the assembly frame (1) is provided with a drive mechanism for driving the door knife. The lubrication mechanism includes a hinge (3), and there are two hinges (3). Both hinges (3) are placed on the side wall of the assembly frame (1). The inner wall of both hinges (3) is inlaid with a fixed bearing (31). The inner wall of the fixed bearing (31) is fixed with a fixed rod (32) that is fixedly connected to the assembly frame (1). One side of the fixed bearing (31) is connected to a lubricating element (33) that is fixedly connected to the assembly frame (1). The lubricating element (33) has a connecting cavity (34) that matches the fixed bearing (31) inside.

2. The elevator synchronous door knife assembly with a lubrication structure according to claim 1, characterized in that: The inner wall of the lubricating component (33) is provided with a through hole (35) that communicates with the connecting cavity (34), and a piston (36) is slidably connected to the right side inside the lubricating component (33).

3. The elevator synchronous door knife assembly with a lubrication structure according to claim 2, characterized in that: A compression spring (37) is abutted to the right side of the piston (36), and a movable rod (38) that is telescopically connected to the lubricating component (33) is fixed to the side wall of the piston (36).

4. The elevator synchronous door knife assembly with a lubrication structure according to claim 1, characterized in that: Both ends of the two hinges (3) are rotatably connected to two movable blade arms (4) via bearings.

5. The elevator synchronous door knife assembly with a lubrication structure according to claim 1, characterized in that: The driving mechanism includes a connector (5), which is fixed to the upper surface of a movable blade arm (4). A hinge rod (51) is fixed to the side wall of the connector (5), and a movable block (52) is connected to the end of the hinge rod (51).

6. The elevator synchronous door knife assembly with a lubrication structure according to claim 5, characterized in that: The movable block (52) has a limiting groove (53) that is slidably connected to the hinge rod (51) inside. The outer surface of the movable block (52) is slidably connected to a sliding groove (54) opened on the inner wall of the assembly frame (1). The side wall of the movable block (52) is rotatably connected to a connecting rod (55).

7. An elevator synchronous door knife assembly with a lubrication structure according to claim 5, characterized in that: Both movable blade arms (4) are equipped with fixing screws (7), and a return spring (6) is fixed to the end of each fixing screw (7).

Images