Elevator safety braking system

Abstract

The utility model discloses an elevator safety braking system, which relates to the technical field of elevator protection structures, and comprises an elevator main body, a speed limiter and a plurality of vertical rails, the elevator main body ascends and descends along the vertical rails, the speed limiter comprises a speed limiting trigger and a speed limiting steel wire rope, and a braking device is arranged on the elevator main body. The braking device comprises wedge-shaped clamping blocks, wedge-shaped block clamps, a linkage rod and a traction pin, the wedge-shaped block clamps comprise two wedge blocks with small upper portions and large lower portions, the wedge-shaped block clamps move up and down along a V-shaped groove formed by the two wedge-shaped clamping blocks, the V-shaped groove is small in upper portion and large in lower portion, the traction pin is connected to the speed limiting steel wire rope through the linkage rod, the traction pin lifts to drive the wedge-shaped block clamps to move upwards, and the wedge-shaped block clamps move downwards. And under the action of the V-shaped groove, the guide rail is clamped inwards. The effects that the heavy objects can be quickly and transversely moved, taken and placed, the heavy objects can freely enter and exit from the elevator body conveniently, braking can be facilitated, and the lifting stability and safety of the heavy objects are improved are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of elevator protection structures, in particular to a safety braking system for an elevator. Background Art

[0002] Common lifting systems dedicated to cargo lifting and mechanical energy storage are primarily friction-traction systems, such as common mining hoists. These systems often have limited safety measures, while civilian elevators used for both passenger and freight use often incorporate numerous redundant designs to improve safety. This results in high system costs and an inability to meet the efficient transmission requirements of high-speed, heavy-load freight transport and mechanical energy storage systems. Therefore, in mechanical energy storage systems, in particular, there is an urgent need for an open elevator structure that can quickly move and place heavy objects, allowing them to freely enter and exit the elevator body, while also facilitating braking and improving the stability and safety of heavy object lifting. Utility Model Content

[0003] The purpose of the utility model is to provide a safety brake system for an elevator, which can quickly move and put heavy objects in and out of the elevator body, and can also facilitate braking, thereby improving the stability and safety of lifting heavy objects.

[0004] The above technical objectives of the present invention are achieved through the following technical solutions:

[0005] A safety brake system for an elevator comprises an elevator body, a speed limiter and a plurality of vertical rails. The elevator body is raised and lowered along the vertical rails. The speed limiter comprises a speed limiting trigger and a speed limiting steel wire rope. A braking device is provided on the elevator body. The braking device comprises a wedge-shaped clamp, a wedge-shaped clamp, a linkage rod and a traction pin. The wedge-shaped clamp comprises two wedges which are smaller at the top and larger at the bottom. The wedge-shaped clamp moves up and down along a V-shaped groove formed by the two wedge-shaped clamps. The V-shaped groove is smaller at the top and larger at the bottom. The traction pin is connected to the speed limiting steel wire rope through a linkage rod. The lifting of the traction pin drives the wedge-shaped clamp upward, and is clamped inward on the guide rail under the action of the V-shaped groove.

[0006] Furthermore, the elevator body includes a guide frame and a transverse frame, and the transverse frame is slidably connected to the guide frame along the horizontal direction.

[0007] Furthermore, the elevator body further comprises a bottom bracket, the bottom bracket comprises a mounting plate, the braking device is connected to the mounting plate, and the bottom of the guide frame is connected to the mounting plate.

[0008] Furthermore, the bottom bracket also includes a plurality of top plates connected to the mounting plate, and there is a gap between the top plates and the transverse frame.

[0009] Furthermore, after the elevator body exceeds the speed limiter, the speed limiter triggers the braking device to brake. The braking force of the braking device causes the guide frame to be slightly deformed due to resistance, so that the top plate contacts the transverse frame.

[0010] Furthermore, a pit buffer system is provided at the bottom of the pit and is located directly below the main body of the elevator.

[0011] Furthermore, the pit buffer system includes a buffer mounting seat at the bottom and a retractable damper at the top.

[0012] Furthermore, several corresponding guide wheel systems are connected to the elevator body, and the guide wheel system includes two X-direction pressure wheels and one Y-direction pressure wheel. The Y-direction pressure wheel abuts against the side of the corresponding vertical guide rail facing the elevator body, and the X-direction pressure wheel is perpendicular to the Y-direction pressure wheel and abuts against the opposite sides of the vertical guide rail.

[0013] In summary, the present invention has the following beneficial effects:

[0014] The elevator of the present invention has an open structure, which can quickly move and pick up heavy objects larger than the elevator itself. It also has multiple safety measures such as track brakes and pit buffers, which effectively improve the safety of the system. It can effectively deal with safety accidents caused by overspeeding of the elevator.

[0015] The top plate and the bottom of the transverse frame maintain a small gap but do not touch each other. The narrow gap between the two facilitates the lateral movement of the transverse frame. When the elevator is fully loaded and moving up and down and exceeds the speed limit, the speed limiter triggers the track brake to brake, causing the guide frame to deform slightly due to resistance. At this time, the top plate of the bracket 1102 contacts the transverse frame, so that the vertical braking force is transmitted to the transverse frame, achieving emergency braking.

[0016] The braking force is directly transmitted to the transverse frame, so the latter directly carries the heavy object. Otherwise, due to the low structural strength of the guide frame, if the braking force of 11 is transmitted by the structure, 202 will be greatly deformed but still cannot effectively decelerate 201, resulting in a problem of brake failure. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 This is a schematic diagram of the overall installation structure of a safety brake system for an elevator in the present utility model;

[0019] Figure 2 This is a front view of a safety brake system for an elevator according to the present invention;

[0020] Figure 3 This is a schematic diagram of the separation between the bottom bracket and the guide frame in a safety brake system for an elevator of the present invention;

[0021] Figure 4 The utility model is a structural diagram of the guide wheel system part of the elevator safety brake system.

[0022] In the figure, 1. electric generator; 2. elevator body; 201. transverse frame; 202. guide frame; 2021. support leg; 8. guide rail; 11. braking device; 11011. traction pin; 11012. wedge block clamp; 11013. wedge clamp; 11014. shell mounting block; 11015. linkage rod; 12. speed limit trigger; 1201. speed limiting wire rope; 11021. mounting plate; 11022. top plate; 13. pit buffer system; 1301. retractable damper; 1302. buffer mounting seat; 241. X-axis pressure wheel; 242. Y-axis pressure wheel. DETAILED DESCRIPTION

[0023] The following is a further description of the specific embodiments of the present invention in conjunction with the accompanying drawings, which do not limit the present invention. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0024] A safety brake system for an elevator, such as Figure 1 As shown, it is used in a mechanical energy storage system, including an electric generator 1 and an elevator body 2. The elevator body 2 is used to load a heavy object 31. When the electric generator 1 operates in motor mode, the elevator body 2 together with the heavy object 31 is lifted from a low position to a high position, and the electrical energy is converted into potential energy. On the contrary, when the electric generator is in generator mode, the heavy object 31 drives the elevator body 2 to descend by its own gravity, and at the same time drives the traction shaft to rotate through the traction belt, and drives the electric generator to rotate through the transmission system to generate electricity. This process converts the gravitational potential energy of the heavy object 31 into electrical energy. Its specific structural principle is the existing technology and will not be described in detail.

[0025] like Figure 1As shown, the system also includes a speed limiter and a plurality of vertical rails. The elevator body 2 includes a guide frame 202 and a transverse frame 201. The transverse frame 201 is connected to the guide frame 202 in a sliding manner in the horizontal direction. The guide frame 202 is raised and lowered under the guidance of the traction force and the vertical guide rails 8. The transverse frame 201 is C-shaped. The open C-shaped structure is convenient for carrying heavy objects with a width greater than the transverse frame 201. The heavy objects move laterally into or out of the elevator body 2; relative lateral sliding with the guide frame 202 is achieved through hydraulic means, etc., and a hydraulic lifting system is provided inside to facilitate the lateral movement of heavy objects into and out. The lifting and lowering of the heavy objects is achieved by lifting and lowering the heavy objects. That is, after the transverse frame 201 moves outward, the heavy objects are lifted from the original platform by hydraulic lifting, and then the transverse frame 201 is reset to achieve the removal of the heavy objects, and vice versa.

[0026] like Figure 1 As shown, the elevator body 2 is raised and lowered along the vertical track, and the speed limiter includes a speed limiting trigger 12 and a speed limiting wire rope 1201. The elevator body 2 is provided with a braking device 11, which includes a wedge block 11013, a wedge block clamp 11012, a linkage rod 11015 and a traction pin 11011. The wedge block clamp 11012 includes two wedge blocks with a smaller upper portion and a larger lower portion. The wedge block clamp 11012 moves up and down along the V-groove formed by the two wedge blocks 11013, and the V-groove is smaller at the upper portion and larger at the lower portion. The traction pin 11011 is connected to the speed limiting wire rope 1201 through the linkage rod 11015. The lifting of the traction pin 11011 drives the wedge block clamp 11012 upward, and under the action of the V-groove, it is clamped inward on the guide rail 8 (horizontal insertion rods can be set on both sides of the traction pin 11011, and the wedge block clamp 11012 slides along the horizontal insertion rods and is connected thereto).

[0027] like Figure 1 As shown, the elevator body 2 further includes a bottom bracket, which includes a mounting plate 11021. The brake device 11 is connected to the mounting plate 11021, and the bottom of the guide frame 202 is connected to the mounting plate 11021. The bottom bracket also includes a plurality of top plates 11022 connected to the mounting plate 11021, and there is a gap between the top plates 11022 and the transverse frame 201.

[0028] After the elevator body 2 exceeds the speed limiter, the speed limiter triggers the braking device 11 to brake. The braking force of the braking device 11 causes the guide frame 202 to be slightly deformed due to resistance, so that the top plate 11022 contacts the transverse frame 201.

[0029] like Figure 1 As shown, a pit buffer system 13 is provided at the bottom of the pit and is located directly below the elevator body 2; the pit buffer system 13 includes a buffer mounting seat 1302 at the bottom and a retractable damper 1301 at the top.

[0030] like Figure 1 As shown, several corresponding guide wheel systems are connected in the elevator body 2, and the guide wheel system includes two X-direction pressure wheels 241 and one Y-direction pressure wheel 242. The Y-direction pressure wheel 242 abuts against the side of the corresponding vertical guide rail 8 facing the elevator body 2, and the X-direction pressure wheel 241 is perpendicular to the Y-direction pressure wheel 242 and abuts against the opposite sides of the vertical guide rail 8.

[0031] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art may make various modifications or equivalent substitutions to the present invention within the essence and protection scope of the present invention, and such modifications or equivalent substitutions should also be deemed to fall within the protection scope of the technical solution of the present invention.

Claims

1. A safety brake system for an elevator, characterized in that: The invention comprises an elevator body (2), a speed limiter and a plurality of vertical rails. The elevator body (2) is raised and lowered along the vertical rails. The speed limiter comprises a speed limit trigger (12) and a speed limit wire rope (1201). The elevator body (2) is provided with a braking device (11). The braking device (11) comprises a wedge-shaped clamp (11013), a wedge-shaped clamp (11012), a linkage rod (11015) and a traction pin (11011). The wedge-shaped clamp (11013) is provided with a braking device (11013). 11012) comprises two wedge blocks which are smaller at the top and larger at the bottom. The wedge block clamp (11012) moves up and down along the V-shaped groove formed by the two wedge clamp blocks (11013). The V-shaped groove is smaller at the top and larger at the bottom. The traction pin (11011) is connected to the speed limiting wire rope (1201) through a linkage rod (11015). The lifting of the traction pin (11011) drives the wedge block clamp (11012) upward, and under the action of the V-shaped groove, it is clamped inwardly on the guide rail (8).

2. The elevator safety brake system according to claim 1, characterized in that: The elevator body (2) comprises a guide frame (202) and a transverse frame (201), and the transverse frame (201) is connected to the guide frame (202) in a sliding manner in a horizontal direction.

3. The elevator safety brake system according to claim 2, characterized in that: The elevator body (2) also includes a bottom bracket, which includes a mounting plate (11021), the braking device (11) is connected to the mounting plate (11021), and the bottom of the guide frame (202) is connected to the mounting plate (11021).

4. The elevator safety brake system according to claim 3, characterized in that: The bottom bracket also includes a plurality of top plates (11022) connected to the mounting plate (11021), and there is a gap between the top plates (11022) and the transverse movement frame (201).

5. The elevator safety brake system according to claim 4, characterized in that: When the elevator body (2) exceeds the speed limiter, the brake device (11) is triggered to brake, and the braking force of the brake device (11) causes the guide frame (202) to be slightly deformed due to resistance, so that the top plate (11022) contacts the transverse frame (201).

6. The elevator safety brake system according to claim 1, characterized in that: A pit buffer system (13) is provided at the bottom of the pit and is located directly below the elevator body (2).

7. The elevator safety brake system according to claim 6, characterized in that: The pit buffer system (13) comprises a buffer mounting seat (1302) at the bottom and a retractable damper (1301) at the top.

8. The elevator safety brake system according to claim 1, characterized in that: The elevator body (2) is connected to a plurality of corresponding guide wheel systems (24), the guide wheel system (24) comprising two X-direction pressure wheels (241) and one Y-direction pressure wheel (242), the Y-direction pressure wheel (242) abutting against a side of the corresponding vertical guide rail (8) facing the elevator body (2), and the X-direction pressure wheel (241) being perpendicular to the Y-direction pressure wheel (242) and abutting against opposite sides of the vertical guide rail (8).

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