Synchronous lifting mechanism for six safety tongs
By combining the transmission design of double horizontal tie rods and coupling tubes with modular lower beam components, the problems of synchronization and structural complexity of elevator safety clamp systems are solved, achieving high reliability and easy maintenance, and making it suitable for compact elevator shafts.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUANGDONG DELI ELEVATOR PARTS CO LTD
- Filing Date
- 2025-06-04
- Publication Date
- 2026-05-12
AI Technical Summary
Existing elevator safety brake systems suffer from insufficient synchronization, complex structure, large space occupation, and difficult maintenance, making them particularly difficult to adapt to compact elevator shafts.
The system employs a combined transmission design of double horizontal tie rods and coupling tubes, along with a modular lower beam assembly, to achieve synchronous lifting of the six safety clamps. Reliability is enhanced by symmetrically arranged return springs and anti-disengagement buckles.
It achieves high synchronization of the six safety clamps, shortens braking response time, reduces lateral space occupation, supports quick disassembly and easy maintenance, and improves service life.
Smart Images
Figure CN224226423U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of elevator safety device technology, specifically relating to a six-safety-clamp synchronous lifting mechanism. Background Technology
[0002] Existing elevator safety clamp systems mostly adopt a single-sided or double-sided safety clamp linkage structure, which triggers the wire rope to lift the safety clamp through a speed governor.
[0003] However, such solutions have the following drawbacks: 1. Insufficient synchronization: When multiple safety clamps are pulled, the excessively long transmission link or gaps between components can easily lead to asynchronous actions of the safety clamps, reducing braking efficiency. 2. Complex structure: Traditional mechanisms rely on multiple independent linkages and springs, making installation and maintenance difficult, and prone to failure due to component wear. 3. Difficult reset: The safety clamps need to be manually reset after braking, and an unreasonable layout of the reset springs may lead to return deviation. 4. Large space occupation: Existing lifting mechanisms occupy a large lateral space, making them difficult to adapt to compact elevator shafts.
[0004] This invention proposes a six-safety-clamp synchronous lifting mechanism by optimizing the transmission link and component layout to solve the above problems. Utility Model Content
[0005] In view of the problems mentioned in the background technology above, the purpose of this utility model is to provide a six-safety-clamp synchronous lifting mechanism. Through the design of double horizontal tie rods, coupling round tubes and modular lower beam components, it solves the problems of poor synchronization of multiple safety clamps and complex structure. It is suitable for elevator safety systems and has high reliability and easy maintenance.
[0006] To achieve the above-mentioned technical objectives, the technical solution adopted by this utility model is as follows:
[0007] A six-safety-clamp synchronous lifting mechanism includes a lower beam assembly, which includes a lower beam, a column, a short shaft, a positioning spring, a first horizontal tie rod, a second horizontal tie rod, a first long connecting shaft, and a second long connecting shaft. The lower beam is fixedly connected to the column.
[0008] It also includes a safety clamp lifting bracket, a safety clamp connecting screw, and six safety clamps symmetrically arranged on both sides of the lower beam assembly. Each of the safety clamps is hinged to the safety clamp lifting bracket via the safety clamp connecting screw.
[0009] The first horizontal tie rod is connected to the short shaft, the short shaft is connected to the column, the first horizontal tie rod is connected to the second horizontal tie rod, and the second horizontal tie rod is connected to the safety clamp lifting bracket through the first long connecting shaft and the second long connecting shaft.
[0010] It also includes a return spring, which is fixed between the first horizontal tie rod and the positioning spring, and the return spring is used to reset the safety clamp;
[0011] It also includes a speed limiter wire rope, a first coupling tube, and a second coupling tube. The speed limiter wire rope is connected to the first coupling tube and the second coupling tube via a wire rope handle, and is used to drive the first and second horizontal tie rods to move synchronously.
[0012] Further specified, the first long connecting shaft and the second long connecting shaft are fixed to each other by the first coupling tube and the second coupling tube, respectively. The first coupling tube and the second coupling tube are respectively connected to hexagonal nuts at both ends, and the first long connecting shaft and the second long connecting shaft are tightened by hexagonal screws.
[0013] Further, it also includes a fixed bracket, with the positioning spring disposed between the reset spring and the fixed bracket, the positioning spring being used to limit the lateral displacement of the lower beam assembly.
[0014] Further, it also includes a connecting bracket and an elevator guide rail, wherein the safety clamp lifting bracket is fixed to the elevator guide rail via the connecting bracket, and the jaws of the safety clamp symmetrically clamp the elevator guide rail.
[0015] Further specifying, the reset spring is a double helical spring, symmetrically arranged between the first horizontal tie rod and the positioning spring, and coaxial with the hinge point of the safety clamp lifting bracket.
[0016] Furthermore, the first long connecting shaft and the second long connecting shaft are respectively provided with anti-detachment buckles at both ends. The anti-detachment buckles are used to ensure the stable connection between the first horizontal tie rod, the second horizontal tie rod and the safety clamp lifting bracket.
[0017] Further, it also includes an elevator guide shoe, which is integrated into the bottom of the lower beam assembly. The elevator guide shoe is slidably connected to the elevator guide rail and provides vertical guidance when the safety clamp is activated.
[0018] Further, it also includes a splitter, one end of which is connected to the speed limiter wire rope and the other end is connected to the safety gear lifting bracket. The speed limiter wire rope is evenly distributed to the six safety gear lifting brackets through the splitter.
[0019] The beneficial effects of this utility model are:
[0020] High synchronization: Through the combined transmission of double crossbars and coupling tubes, the six safety clamps are lifted synchronously, reducing the braking response time by about 40%.
[0021] Compact structure: The lower beam assembly integrates positioning springs and elevator guide shoes, reducing the lateral space occupied and making it suitable for narrow elevator shafts.
[0022] Easy to maintain: The lower beam assembly adopts a modular design to support quick disassembly and replacement, and the return spring adopts a symmetrical layout to avoid return deviation.
[0023] High reliability: The anti-detachment buckles and double helical spring design at both ends of the double long connecting shaft reduce the risk of parts falling off and significantly extend service life.
[0024] In summary, this utility model, through the design of double horizontal tie rods, coupling round tubes, and modular lower beam components, solves the problems of poor synchronization of multiple safety clamps and complex structure, and is suitable for elevator safety systems, possessing high reliability and easy maintenance. Attached Figure Description
[0025] This utility model can be further illustrated by the non-limiting embodiments given in the accompanying drawings;
[0026] Figure 1 This is a schematic diagram of an embodiment of a six-safety-clamp synchronous lifting mechanism of the present invention;
[0027] Figure 2 This is an enlarged structural schematic diagram of an embodiment of a six-safety-clamp synchronous lifting mechanism of this utility model;
[0028] Figure 3 This is a schematic diagram of the coupling tube of an embodiment of a six-safety-clamp synchronous lifting mechanism of the present invention;
[0029] Figure 4 This is a side view of the second long connecting shaft 60 of an embodiment of a six-safety-clamp synchronous lifting mechanism of the present invention;
[0030] Figure 5 This is a side view of the first long connecting shaft 59 of an embodiment of a six-safety-clamp synchronous lifting mechanism of the present invention.
[0031] The symbols for the main components are explained as follows: lower beam 1, column 2, positioning spring 7, short shaft 8, elevator guide rail 9, safety clamp 13, first horizontal tie rod 43, second horizontal tie rod 44, fixed bracket 45, return spring 47, elevator guide shoe 51, first long connecting shaft 59, second long connecting shaft 60, safety clamp lifting bracket 62, connecting bracket 64, safety clamp connecting screw 65, wire rope handle 67, speed governor wire rope 70, first coupling round tube 71, second coupling round tube 73. Detailed Implementation
[0032] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.
[0033] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0034] 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.
[0035] like Figure 1 As shown, the present invention provides a six-safety-clamp synchronous lifting mechanism, including a lower beam assembly, which includes a lower beam 1, a column 2, a short shaft 8, a positioning spring 7, a first horizontal tie rod 43, a second horizontal tie rod 44, a first long connecting shaft 59, and a second long connecting shaft 60. The lower beam 1 is fixedly connected to the column 2.
[0036] It also includes a safety clamp lifting bracket 62, a safety clamp connecting screw 65, and six safety clamps 13 symmetrically arranged on both sides of the lower beam assembly. Each of the safety clamps 13 is hinged to the safety clamp lifting bracket 62 through the safety clamp connecting screw 65.
[0037] The first horizontal tie rod 43 is connected to the short shaft 8, the short shaft 8 is connected to the column 2, the first horizontal tie rod 43 is connected to the second horizontal tie rod 44, and the second horizontal tie rod 44 is connected to the safety clamp lifting bracket 62 through the first long connecting shaft 59 and the second long connecting shaft 60;
[0038] It also includes a reset spring 47, which is fixed between the first horizontal tie rod 43 and the positioning spring 7, and the reset spring 47 is used to reset the safety clamp 13;
[0039] It also includes a speed limiter wire rope 70, a first coupling tube 71, and a second coupling tube 73. The speed limiter wire rope 70 is connected to the first coupling tube 71 and the second coupling tube 73 through a wire rope handle 67, and is used to drive the first horizontal tie rod 43 and the second horizontal tie rod 44 to move synchronously.
[0040] In the practical application of this embodiment, the first long connecting shaft 59 and the second long connecting shaft 60 are fixed by the first coupling tube 71 and the second coupling tube 73. The two ends of the first coupling tube 71 and the second coupling tube 73 are respectively connected to hexagonal nuts, and the first long connecting shaft 59 and the second long connecting shaft 60 are tightened by hexagonal screws.
[0041] In practical applications of this embodiment, a fixed bracket 45 is also included. The positioning spring 7 is disposed between the reset spring 47 and the fixed bracket 45. The positioning spring 7 is used to limit the lateral displacement of the lower beam assembly.
[0042] In the practical application of this embodiment, it also includes a connecting bracket 64 and an elevator guide rail 9. The safety clamp lifting bracket 62 is fixed to the elevator guide rail 9 through the connecting bracket 64, and the jaws of the safety clamp 13 symmetrically clamp the elevator guide rail 9.
[0043] In the practical application of this embodiment, the reset spring 47 is a double helical spring, symmetrically arranged between the first horizontal tie rod 43 and the positioning spring 7, and coaxial with the hinge point of the safety clamp lifting bracket 62.
[0044] In the practical application of this embodiment, the first long connecting shaft 59 and the second long connecting shaft 60 are respectively provided with anti-detachment buckles at both ends. The anti-detachment buckles are used to ensure the stable connection between the first horizontal pull rod 43, the second horizontal pull rod 44 and the safety clamp lifting bracket 62.
[0045] In the practical application of this embodiment, an elevator guide shoe 51 is also included. The elevator guide shoe 51 is integrated into the bottom of the lower beam assembly. The elevator guide shoe 51 is slidably connected to the elevator guide rail 9 and provides vertical guidance when the safety clamp 13 is activated.
[0046] In the practical application of this embodiment, a splitter is also included. One end of the splitter is connected to the speed limiter wire rope 70, and the other end is connected to the safety gear lifting bracket 62. The speed limiter wire rope 70 distributes the tension evenly to the six safety gear lifting brackets 62 through the splitter.
[0047] The working principle of this utility model safety clamp is as follows:
[0048] The safety clamp lever drives the speed governor wire rope 70, and the tensioning wheel maintains the friction between the speed governor wire rope 70 and the speed governor wheel, so that the speed governor wheel speed is consistent with the car running speed.
[0049] When the car (safety gear 13, safety gear lever, governor wire rope 70, governor wheel) runs at a speed ≥ 115% of its rated speed, the governor activates. The brake rope block compresses the governor wire rope, stopping its operation and triggering the safety gear lever, causing safety gear 13 to activate. Based on this, the elevator uses two identical elevator lifting mechanisms, synchronized by the first coupling tube 71 and the second coupling tube 73. When the governor activates, the wire rope handle is lifted, instantly synchronizing all three lifting mechanisms and simultaneously lifting all six safety gears to apply the brakes, forcibly stopping the car.
[0050] Example: Elevator emergency braking
[0051] During elevator operation, after the speed governor detects overspeed, the speed governor wire rope 70 drives the first horizontal tie rod 43 and the second horizontal tie rod 44 to move backward synchronously through the first coupling tube 71 and the second coupling tube 73, thereby driving the six safety clamps 13 to clamp the elevator guide rail 9 synchronously and achieve instantaneous braking.
[0052] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.
Claims
1. A six-safety-clamp synchronous lifting mechanism, characterized in that: The lower beam assembly includes a lower beam (1), a column (2), a short shaft (8), a positioning spring (7), a first horizontal tie rod (43), a second horizontal tie rod (44), a first long connecting shaft (59), and a second long connecting shaft (60). The lower beam (1) is fixedly connected to the column (2). It also includes a safety clamp lifting bracket (62), a safety clamp connecting screw (65), and six safety clamps (13) symmetrically arranged on both sides of the lower beam assembly. Each of the safety clamps (13) is hinged to the safety clamp lifting bracket (62) through the safety clamp connecting screw (65). The first horizontal tie rod (43) is connected to the short shaft (8), the short shaft (8) is connected to the column (2), the first horizontal tie rod (43) is connected to the second horizontal tie rod (44), and the second horizontal tie rod (44) is connected to the safety clamp lifting bracket (62) through the first long connecting shaft (59) and the second long connecting shaft (60); It also includes a reset spring (47), which is fixed between the first horizontal tie rod (43) and the positioning spring (7), and the reset spring (47) is used to reset the safety clamp (13); It also includes a speed limiter wire rope (70), a first coupling tube (71), and a second coupling tube (73). The speed limiter wire rope (70) is connected to the first coupling tube (71) and the second coupling tube (73) through a wire rope handle (67) to drive the first horizontal tie rod (43) and the second horizontal tie rod (44) to move synchronously.
2. The six-safety-clamp synchronous lifting mechanism according to claim 1, characterized in that: The first long connecting shaft (59) and the second long connecting shaft (60) are fixed to the second connecting shaft (73) through the first coupling tube (71). The first coupling tube (71) and the second coupling tube (73) are respectively connected to hexagonal nuts at both ends, and the first long connecting shaft (59) and the second long connecting shaft (60) are tightened by hexagonal screws.
3. The six-safety-clamp synchronous lifting mechanism according to claim 1, characterized in that: It also includes a fixed bracket (45), and the positioning spring (7) is disposed between the reset spring (47) and the fixed bracket (45). The positioning spring (7) is used to limit the lateral displacement of the lower beam assembly.
4. The six-safety-clamp synchronous lifting mechanism according to claim 1, characterized in that: It also includes a connecting bracket (64) and an elevator guide rail (9). The safety clamp lifting bracket (62) is fixed to the elevator guide rail (9) through the connecting bracket (64), and the jaws of the safety clamp (13) symmetrically clamp the elevator guide rail (9).
5. A six-safety-clamp synchronous lifting mechanism according to claim 1, characterized in that: The reset spring (47) is a double helical spring, symmetrically arranged between the first horizontal tie rod (43) and the positioning spring (7), and coaxial with the hinge point of the safety clamp lifting bracket (62).
6. The six-safety-clamp synchronous lifting mechanism according to claim 1, characterized in that: The first long connecting shaft (59) and the second long connecting shaft (60) are respectively provided with anti-detachment buckles at both ends. The anti-detachment buckles are used to ensure the stable connection between the first horizontal tie rod (43), the second horizontal tie rod (44) and the safety clamp lifting bracket (62).
7. A six-safety-clamp synchronous lifting mechanism according to claim 4, characterized in that: It also includes an elevator guide shoe (51), which is integrated into the bottom of the lower beam assembly. The elevator guide shoe (51) is slidably connected to the elevator guide rail (9) and provides vertical guidance when the safety clamp (13) is activated.
8. A six-safety-clamp synchronous lifting mechanism according to claim 1, characterized in that: It also includes a splitter, one end of which is connected to the speed limiter wire rope (70) and the other end is connected to the safety gear lifting bracket (62). The speed limiter wire rope (70) distributes the tension evenly to the six safety gear lifting brackets (62) through the splitter.