Safety tongs lifting mechanism

Abstract

The utility model discloses a safety gear lifting mechanism and belongs to the technical field of elevator safety components. The lifting mechanism is installed below a lower beam on the lower portion of a lift car, safety tongs are installed at the two ends of the lower portion of the lower beam, the lifting mechanism comprises a lifting plate and a trigger connecting rod, the two ends of the lifting plate are connected with steel wire ropes wound around a speed limiter rope wheel respectively, one end of the trigger connecting rod is fixedly connected with the safety tongs, and the other end of the trigger connecting rod is fixedly connected with the safety tongs. The safety tongs are characterized in that a lifting adapter plate is additionally arranged between the trigger connecting rod and the lifting plate, the other end of the trigger connecting rod is rotationally connected with one end of the lifting adapter plate, and the other end of the lifting adapter plate is rotationally connected with the lifting plate. The safety tongs have the advantages that the lifting adapter plate is additionally arranged between the lifting plate and the safety tongs trigger connecting rod, the mounting position of the lifting plate is raised, and the safety tongs are suitable for being mounted in a shallow pit.

Description

Technical Field

[0001] The utility model belongs to the technical field of elevator safety components, and in particular relates to a safety clamp lifting mechanism. Background Art

[0002] The elevator standard stipulates that safety protection devices must be installed in the entire elevator system, such as safety clamp components, rope clamp components, etc. The main function of these devices is to trigger the safety protection devices when the elevator is overspeeding or encounters other emergency situations, ensuring the safe operation of the elevator. Figure 1 As shown, the safety clamp components include a safety clamp and a lifting mechanism. The lifting plate 4 in the lifting mechanism is connected to the safety clamp by a trigger link 6. When the lifting plate 4 is pulled by the speed limiter, the lifting plate 4 triggers the link 6 to drive the safety clamp to clamp the guide rail, achieving an emergency stop of the elevator car and protecting the lives and property in the car. In this safety structure, to ensure that the lifting plate 4 effectively pulls the safety clamp, the lifting plate 4 is installed at a low position, occupying a large space under the lower beam. This requires a deeper pit space to meet the installation requirements. However, some buildings often have shallow pits, which makes it difficult to arrange the safety clamp components under the car.

[0003] In view of the above-mentioned prior art, it is necessary to reasonably improve the existing safety gear pulling mechanism. For this reason, the applicant has made a useful design, and the technical solution to be introduced below is produced under this background. Utility Model Content

[0004] The task of the utility model is to provide a safety clamp lifting mechanism, which adds a lifting adapter plate between the lifting plate and the safety clamp triggering connecting rod to improve the installation position of the lifting plate, which is suitable for installation in a shallow pit.

[0005] The task of the present utility model is accomplished in this way: a safety clamp lifting mechanism is installed below the lower beam at the lower part of the car, and the safety clamps are installed at both ends below the lower beam. The lifting mechanism includes: a lifting plate and a trigger connecting rod. The two ends of the lifting plate are respectively connected to the wire rope wound on the speed limiter rope pulley. One end of the trigger connecting rod is fixedly connected to the safety clamp, and the action of the trigger connecting rod drives the safety clamp to clamp the guide rail. The characteristic is that a lifting adapter plate is added between the trigger connecting rod and the lifting plate, the other end of the trigger connecting rod is rotatably connected to one end of the lifting adapter plate, and the other end of the lifting adapter plate is rotatably connected to the lifting plate.

[0006] In a specific embodiment of the present invention, the lifting adapter plate includes a vertical plate, and one end of the vertical plate is provided with a lifting plate connecting section extending toward the lifting plate and arranged at an angle to the vertical plate.

[0007] In another specific embodiment of the present invention, a trigger link connecting section arranged at an angle to the vertical plate is provided at the other end of the vertical plate.

[0008] In another specific embodiment of the present invention, the trigger link connecting section and the lifting plate connecting section are located on the same side of the vertical plate, and the trigger link connecting section gives way to the steel wire rope in the extension direction of the steel wire rope.

[0009] In another specific embodiment of the present invention, the safety clamps are respectively a left safety clamp and a right safety clamp, the left safety clamp has a left rotating shaft for triggering the action of the left safety clamp, one end of the trigger connecting rod is fixedly connected to the left rotating shaft, the right safety clamp has a right rotating shaft for triggering the action of the right safety clamp, and the left rotating shaft and the right rotating shaft are linked by a first connecting rod, a second connecting rod, and a connecting rod mechanism.

[0010] In another specific embodiment of the present invention, one end of the first connecting rod is fixedly connected to the left rotating shaft, and the other end of the first connecting rod is rotatably connected to one end of the connecting rod mechanism; one end of the second connecting rod is fixedly connected to the right rotating shaft, and the other end of the second connecting rod is rotatably connected to the other end of the connecting rod mechanism.

[0011] Due to the adoption of the above structure, the present invention has the beneficial effects: a lifting adapter plate is added between the lifting plate and the safety clamp triggering link to ensure the rotation angle of the triggering link when it is triggered, and at the same time the lifting plate is installed upwards and toward the outside to reduce the installation space of the safety clamp components under the lower beam, so this structure can be suitable for installation in shallow pits. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural diagram of the safety gear lifting mechanism described in the prior art;

[0013] Figure 2 It is a structural schematic diagram of the safety clamp lifting mechanism of the utility model.

[0014] In the figure: 1. Lower beam; 2. Left safety clamp, 21. Left rotating shaft; 3. Right safety clamp, 31. Right rotating shaft; 4. Lifting plate; 5. Connecting rod mechanism; 6. Trigger connecting rod, 7. First connecting rod, 8. Second connecting rod, 9. Lifting adapter plate, 91. Vertical plate, 92. Lifting plate connecting section, 93. Trigger connecting rod connecting section; 10. Guide shoe. DETAILED DESCRIPTION

[0015] The specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings. However, the description of the embodiments does not limit the technical solution. Any changes in form rather than substance based on the concept of the present invention should be regarded as within the scope of protection of the present invention.

[0016] In the following description, all concepts related to directionality or orientation, such as up, down, left, right, front and back, are based on Figure 2 The positions shown are for reference only and should not be understood as a special limitation on the technical solution provided by the present invention.

[0017] See also Figure 2 The utility model relates to a safety clamp lifting mechanism, which is installed below the lower beam 1 at the lower part of the car. The safety clamps are installed at both ends below the lower beam 1, namely the left safety clamp 2 and the right safety clamp 3 in the figure. Guide shoes 10 that slide along the guide rails are installed below the left safety clamp 2 and the right safety clamp 3.

[0018] The lifting mechanism specifically includes a lifting plate 4, a linkage 5, a trigger link 6, a first link 7, and a second link 8. The lifting plate 4 is connected at both ends to a steel wire rope wound around the speed governor sheave. The activation of the trigger link 6 drives the safety gear to clamp the guide rail.

[0019] The left safety gear 2 has a left rotating shaft 21 that triggers the left safety gear 2. One end of the trigger link 6 and one end of the first connecting rod 7 are fixedly connected to the left rotating shaft 21. A lifting adapter plate 9 is added between the trigger link 6 and the lifting plate 4. Specifically, the other end of the trigger link 6 is rotatably connected to one end of the lifting adapter plate 9, and the other end of the lifting adapter plate 9 is rotatably connected to the lifting plate 4. The other end of the first connecting rod 7 is rotatably connected to one end of the linkage 5.

[0020] The lifting adapter plate 9 includes a vertical plate 91, one end of which is provided with a lifting plate connecting section 92 extending toward the lifting plate 4 and arranged at an angle to the vertical plate 91. Furthermore, the other end of the vertical plate 91 is provided with a trigger link connecting section 93 arranged at an angle to the vertical plate 91. The trigger link connecting section 93 and the lifting plate connecting section 92 are located on the same side of the vertical plate 91, and the trigger link connecting section 93 gives way to the wire rope in the direction of extension of the wire rope, which serves to reserve space for the wire rope to extend. The installation of the lifting adapter plate 9 raises the installation position of the lifting plate 4, saving installation space at the bottom of the car.

[0021] The right safety gear 3 has a right rotating shaft 31 that triggers the operation of the right safety gear 3. One end of the second connecting rod 8 is fixedly connected to the right rotating shaft 31, and the other end of the second connecting rod 8 is rotatably connected to the other end of the connecting rod mechanism 5. In other words, the two ends of the connecting rod mechanism 5 are rotatably connected to the first connecting rod 7 and the second connecting rod 8, respectively. The connecting rod mechanism 5 realizes the linkage between the left rotating shaft 21 and the right rotating shaft 31, so that when the speed governor pulls the lifting plate 4, the left and right safety gears 2 and 3 can be clamped on the guide rails at the same time, achieving an emergency stop function.

[0022] Please continue reading Figure 2 The working process of the safety clamp lifting mechanism described in the utility model is: when the elevator car overspeeds, the wire rope wound on the speed governor sheave is clamped, and the lifting plate 4 is lifted relative to the car. After the lifting plate 4 is lifted, the lifting adapter plate 9 is lifted. After the lifting adapter plate 9 is lifted, the trigger link 6 is driven to rotate, and then the left rotating shaft 21 fixed to the trigger link 6 is driven to rotate. The rotation of the left rotating shaft 21 triggers the left safety clamp 2 to clamp the guide rail, and at the same time drives the first connecting rod 7 to rotate. The rotation of the first connecting rod 7 pulls the connecting rod mechanism 5 to act, and the action of the connecting rod mechanism 5 drives the second connecting rod 8 to rotate. The rotation of the second connecting rod 8 drives the right rotating shaft 31 to rotate, and the rotation of the right rotating shaft 31 triggers the right safety clamp 3 to clamp the guide rail.

Claims

1. A safety clamp lifting mechanism, which is installed below a lower beam (1) at the lower part of a car, and the safety clamp is installed at both ends below the lower beam (1), and the lifting mechanism comprises: A lifting plate (4) and a trigger link (6), both ends of the lifting plate (4) are respectively connected to a steel wire rope wound on a speed limiter rope pulley, one end of the trigger link (6) is fixedly connected to the safety clamp, and the action of the trigger link (6) drives the safety clamp to clamp the guide rail. It is characterized in that: a lifting adapter plate (9) is additionally provided between the trigger link (6) and the lifting plate (4), the other end of the trigger link (6) is rotatably connected to one end of the lifting adapter plate (9), and the other end of the lifting adapter plate (9) is rotatably connected to the lifting plate (4).

2. A safety gear lifting mechanism according to claim 1, characterized in that: The lifting adapter plate (9) comprises a vertical plate (91), one end of which is provided with a lifting plate connecting section (92) extending toward the lifting plate (4) and arranged at an angle to the vertical plate (91).

3. A safety gear lifting mechanism according to claim 2, characterized in that: The other end of the vertical plate (91) is provided with a trigger link connecting section (93) arranged at an angle to the vertical plate (91).

4. A safety gear lifting mechanism according to claim 3, characterized in that: The trigger link connecting section (93) and the lifting plate connecting section (92) are located on the same side of the vertical plate (91), and the trigger link connecting section (93) gives way to the steel wire rope in the extension direction of the steel wire rope.

5. The safety gear lifting mechanism according to claim 1, characterized in that: The safety clamps are respectively a left safety clamp (2) and a right safety clamp (3); the left safety clamp (2) is provided with a left rotating shaft (21) for triggering the action of the left safety clamp (2); one end of the trigger connecting rod (6) is fixedly connected to the left rotating shaft (21); the right safety clamp (3) is provided with a right rotating shaft (31) for triggering the action of the right safety clamp (3); the left rotating shaft (21) and the right rotating shaft (31) are linked via a first connecting rod (7), a second connecting rod (8) and a connecting rod mechanism (5).

6. The safety gear lifting mechanism according to claim 5, characterized in that: One end of the first connecting rod (7) is fixedly connected to the left rotating shaft (21), and the other end of the first connecting rod (7) is rotatably connected to one end of the connecting rod mechanism (5); one end of the second connecting rod (8) is fixedly connected to the right rotating shaft (31), and the other end of the second connecting rod (8) is rotatably connected to the other end of the connecting rod mechanism (5).

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