Remote emergency brake device of unmanned traction elevator

Abstract

The utility model provides a remote emergency brake device of an unmanned traction elevator, which relates to the technical field of building construction and comprises a lifting well, a bottom plate and a cage, a plurality of upright posts are fixedly mounted at the top of the bottom plate close to the edge, and a motor is fixedly mounted at the center of the bottom of the bottom plate. The motor can drive the threaded rod to rotate and drive the threaded block to move upwards, so that the connecting rod rotates between the rotating seat and the sliding rod, when the rotating seat continuously moves upwards, the distance between the rotating seat and the sliding rod can be shortened, the sliding rod can be pushed outwards in cooperation with the connecting rod, and when the sliding rod slides outwards in the limiting block, the sliding rod can be pushed outwards. When the steel wire rope falls down, the helical tooth plate is pushed to the surface of the helical rack, after the helical tooth plate and the helical rack are engaged, the cage is fixed and prevented from continuously falling down in an accelerated mode, the pulling force of the steel wire rope caused by impact force is greatly relieved, and therefore the load is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of building construction, in particular to a remote emergency brake device for an unmanned traction hoist. Background Art

[0002] A traction construction hoist is a vertical transportation equipment used in building construction and maintenance. It connects the cage of the construction hoist to a wire rope or chain through a traction mechanism to achieve rising and falling movement.

[0003] Since elevators occasionally break down and need emergency braking, most elevators are equipped with emergency stop devices. In the event of an emergency and the cage is overspeeding, the speed limiter will immediately operate, triggering the wire rope brake to stop the cage. However, when the cage is suddenly braked by the emergency stop device, a strong impact force will be generated and the load on the wire rope will increase. After stopping, the cage will hover in the air and rely on the wire rope on the top to continue to maintain balance, which reduces the service life of the wire rope. Therefore, we have proposed a new type of remote emergency brake device for unmanned traction elevators.

[0004] However, therefore, it is necessary to propose a novel remote emergency brake device for an unmanned traction hoist. Utility Model Content

[0005] The utility model mainly provides a remote emergency brake device for an unmanned traction elevator which reduces the increased wire rope load during the emergency brake of the elevator.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a remote emergency brake device for an unmanned traction elevator, comprising a lifting shaft, a base plate and a cage, a plurality of columns are fixedly installed at the top of the base plate near the edge, a motor is fixedly installed at the center of the bottom of the base plate, the output end of the motor slides through the bottom of the base plate and extends upward, a threaded rod is fixedly installed at the output end of the motor, a threaded block is threadedly connected to the outer surface of the threaded rod, and a rotating seat is fixedly connected to the outer surfaces of the threaded block.

[0007] Preferably, the interior of the rotating seat is rotatably connected to a connecting rod via a bearing, and the outer surface of the connecting rod is rotatably connected to a sliding rod via a bearing. When the threaded rod drives the threaded block and the rotating seat to move upward or downward, the connecting rod will rotate between the rotating seat and the sliding rod, thereby shortening or increasing the distance between the rotating seat and the sliding rod, making it easier for the sliding rod to move inward or outward.

[0008] Preferably, a bevel tooth plate is fixedly installed at one end of the slide rod, and a return spring is symmetrically fixedly connected to the outer surface of one side of the bevel tooth plate. By setting the return spring, a certain pulling force can be provided to pull the slide rod inward when the slide rod moves inward, thereby preventing the slide rod from being subjected to the pulling force of the connecting rod obliquely downward, causing the slide rod to get stuck with the limit block.

[0009] Preferably, a limit block is slidably provided on the outer surface of the slide rod, and one end of the return spring is fixedly connected to the outer surface of one side of the limit block. The limit block is provided to limit and guide the slide rod, and the return spring connects the bevel tooth plate and the limit block.

[0010] Preferably, the inner wall of the lifting shaft is fixedly installed with bevel racks at the four corners, and the bevel racks cooperate with the bevel tooth plates. When the bevel tooth plates and the bevel racks are engaged, the cage will be fixed to prevent it from continuing to fall downward at an accelerated rate.

[0011] Preferably, a connecting plate is fixedly connected between the tops of the plurality of columns, and the bottom of the connecting plate is fixedly connected to the top of the limiting block, so that the bottom plate and the connecting plate can be conveniently connected by providing the columns.

[0012] Preferably, a plurality of dampers are fixedly mounted on the top of the connecting plate, and a buffer spring is provided on the outer sleeve of the damper. The top ends of the damper and the buffer spring are fixedly connected to the bottom of the cage. The damper and the buffer spring cooperate with each other to effectively absorb and buffer the downward force of the cage, thereby reducing damage to personnel or cargo inside the cage.

[0013] Compared with the prior art, the advantages and positive effects of the utility model are:

[0014] 1. In the utility model, the threaded rod can be driven to rotate by a motor, which drives the threaded block to move upward, so that the connecting rod rotates between the rotating seat and the sliding rod. When the rotating seat continues to move upward, the distance between the rotating seat and the sliding rod will be shortened. The sliding rod can be pushed outward in cooperation with the connecting rod. When the sliding rod slides outward inside the limit block, the bevel tooth plate will be pushed onto the surface of the bevel rack. When the bevel tooth plate and the bevel rack are engaged, the cage will be fixed to prevent it from continuing to accelerate downward and fall, which greatly reduces the pulling force on the wire rope caused by the impact force, thereby reducing the load.

[0015] 2. In the utility model, during emergency braking, the cage will generate a downward force due to the influence of inertia. The damper and the buffer spring cooperate with each other to effectively absorb and buffer the downward force, thereby effectively reducing damage to personnel or cargo inside the cage. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1A three-dimensional diagram of a remote emergency brake device for an unmanned traction hoist is proposed for the utility model;

[0017] Figure 2 The utility model provides a partial structural schematic diagram of a remote emergency brake device for an unmanned traction lift;

[0018] Figure 3 The utility model provides a helical tooth plate structure schematic diagram of a remote emergency brake device for an unmanned traction lift;

[0019] Figure 4 The utility model provides a schematic structural diagram of a damper of a remote emergency brake device of an unmanned traction elevator.

[0020] Legend: 1. Lifting shaft; 11. Bevel rack; 2. Bottom plate; 21. Column; 3. Motor; 31. Threaded rod; 32. Threaded block; 33. Rotating seat; 34. Connecting rod; 35. Sliding rod; 36. Limit block; 37. Bevel gear plate; 38. Return spring; 4. Connecting plate; 41. Damper; 42. Buffer spring; 5. Cage. DETAILED DESCRIPTION

[0021] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0022] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

[0023] See also Figure 1-4 The utility model provides a technical solution: a remote emergency brake device for an unmanned traction elevator, comprising a hoistway 1, a base plate 2 and a cage 5, a plurality of columns 21 are fixedly installed at the top of the base plate 2 near the edge, a motor 3 is fixedly installed at the center of the bottom of the base plate 2, the output end of the motor 3 slides through the bottom of the base plate 2 and extends upward, a threaded rod 31 is fixedly installed at the output end of the motor 3, a threaded block 32 is threadedly connected to the outer surface of the threaded rod 31, and a rotating seat 33 is fixedly connected to the outer surfaces of the threaded block 32.

[0024] like Figure 1-4As shown, the interior of the rotating seat 33 is rotatably connected to a connecting rod 34 via a bearing, and the outer surface of the connecting rod 34 is rotatably connected to a sliding rod 35 via a bearing. When the threaded rod 31 drives the threaded block 32 and the rotating seat 33 to move upward or downward, the connecting rod 34 will rotate between the rotating seat 33 and the sliding rod 35, thereby shortening or increasing the distance between the rotating seat 33 and the sliding rod 35, making it convenient for the sliding rod 35 to move inward or outward.

[0025] like Figure 1-4 As shown, a beveled tooth plate 37 is fixedly installed at one end of the slide rod 35, and a return spring 38 is symmetrically fixedly connected to the outer surface of one side of the beveled tooth plate 37. By setting the return spring 38, a certain pulling force can be provided to pull the slide rod 35 inward when the slide rod 35 moves inward, thereby preventing the slide rod 35 from being pulled obliquely downward by the connecting rod 34, thereby preventing the slide rod 35 from getting stuck with the limit block 36.

[0026] like Figure 1-4 As shown, a limit block 36 is slidably provided on the outer surface of the slide rod 35, and one end of the return spring 38 is fixedly connected to the outer surface of one side of the limit block 36. The limit block 36 is provided to limit and guide the slide rod 35, and the return spring 38 connects the bevel tooth plate 37 and the limit block 36.

[0027] like Figure 1-4 As shown, the inner wall of the lifting shaft 1 is fixedly installed with bevel racks 11 at the four corners. The bevel racks 11 cooperate with the bevel tooth plates 37. When the bevel tooth plates 37 and the bevel racks 11 are engaged, the cage 5 will be fixed to prevent it from continuing to accelerate downward.

[0028] like Figure 1-4 As shown, a connecting plate 4 is fixedly connected between the tops of a plurality of columns 21, and the bottom of the connecting plate 4 is fixedly connected to the top of the limiting block 36. The columns 21 are provided to facilitate connection between the bottom plate 2 and the connecting plate 4.

[0029] like Figure 1-4 As shown, a plurality of dampers 41 are fixedly installed on the top of the connecting plate 4, and a buffer spring 42 is sleeved on the outside of the damper 41. The top ends of the damper 41 and the buffer spring 42 are fixedly connected to the bottom of the cage 5. The damper 41 and the buffer spring 42 cooperate with each other to effectively absorb and buffer the downward force of the cage 5, thereby reducing damage to personnel or cargo inside the cage 5.

[0030] The usage and working principle of this device are as follows: when the cage 5 in the elevator system exceeds the speed limit, its own emergency and control system will immediately activate the speed limiter, triggering the wire rope brake to stop the cage 5 from moving. This working principle is an existing mature technology and will not be elaborated on here. At the same time, the control system will immediately activate the motor 3 to make the motor 3 run. The motor 3 can drive the threaded rod 31 to rotate. When the threaded rod 31 rotates, it drives the threaded block 32 to move upward. When the threaded block 32 moves, it drives and all the rotating seats 33 installed on the threaded block 32 to move upward synchronously. At this time, the connecting rod 34 rotates between the rotating seat 33 and the sliding rod 35. When the rotating seat 33 continues to move upward, It will shorten the distance between the rotating seat 33 and the sliding rod 35, and the connecting rod 34 can push the sliding rod 35 outward. When the sliding rod 35 slides outward inside the limit block 36, the bevel tooth plate 37 will be pushed onto the surface of the bevel rack 11. When the bevel tooth plate 37 and the bevel rack 11 are engaged, the cage 5 will be fixed to prevent it from continuing to accelerate downward and fall, greatly reducing the pulling force on the wire rope caused by the impact force, thereby reducing the load. During emergency braking, the cage 5 will generate a downward force due to the influence of inertia. The damper 41 and the buffer spring 42 can effectively absorb and buffer the downward force through the mutual cooperation of the damper 41 and the buffer spring 42, which can effectively reduce the damage to people or goods inside the cage 5.

[0031] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A remote emergency brake device for an unmanned traction elevator, comprising a hoistway (1), a base plate (2) and a cage (5), characterized in that: A plurality of columns (21) are fixedly mounted on the top of the base plate (2) near the edge, a motor (3) is fixedly mounted on the bottom of the base plate (2) at the center, the output end of the motor (3) slides through the bottom of the base plate (2) and extends upward, a threaded rod (31) is fixedly mounted on the output end of the motor (3), the outer surface of the threaded rod (31) is threadedly connected to a threaded block (32), and the outer surfaces of the threaded block (32) are fixedly connected to a rotating seat (33).

2. The remote emergency brake device for an unmanned traction hoist according to claim 1, characterized in that: The interior of the rotating seat (33) is rotatably connected to a connecting rod (34) via a bearing, and the outer surface of the connecting rod (34) is rotatably connected to a sliding rod (35) via a bearing.

3. The remote emergency brake device for an unmanned traction hoist according to claim 2, characterized in that: A beveled tooth plate (37) is fixedly mounted on one end of the slide rod (35), and a return spring (38) is symmetrically fixedly connected to an outer surface of one side of the beveled tooth plate (37).

4. The remote emergency brake device for an unmanned traction lift according to claim 3, characterized in that: A limit block (36) is slidably provided on the outer surface of the slide rod (35), and one end of the return spring (38) is fixedly connected to the outer surface of one side of the limit block (36).

5. The remote emergency brake device for an unmanned traction hoist according to claim 1, characterized in that: The inner wall of the lifting shaft (1) is fixedly provided with bevel racks (11) at four corners, and the bevel racks (11) are matched with bevel tooth plates (37).

6. The remote emergency brake device for an unmanned traction hoist according to claim 1, characterized in that: A connecting plate (4) is fixedly connected between the tops of the plurality of upright posts (21), and the bottom of the connecting plate (4) is fixedly connected to the top of the limiting block (36).

7. The remote emergency brake device for an unmanned traction lift according to claim 6, characterized in that: A plurality of dampers (41) are fixedly mounted on the top of the connecting plate (4), a buffer spring (42) is sleeved on the outside of the damper (41), and the top ends of the damper (41) and the buffer spring (42) are fixedly connected to the bottom of the cage (5).

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