An emergency release device of an elevator safety gear and a false touch prevention locking mechanism

Abstract

The utility model discloses an elevator safety tongs emergency release device and prevent false touch locking mechanism belongs to elevator safety tongs relevant technical field, an elevator safety tongs emergency release device and prevent false touch locking mechanism, including the safety tongs main part, the clamp and the lifting lever of installing on the safety tongs main part and be connected in the linkage axle rod of the end of lifting lever, install first ratchet wheel on the linkage axle rod, it is through the magnetic repulsion between the strong magnetic ring of setting in the guide bush, thereby make the reset spring between the strong magnetic ring prevent being compressed deformation when reaching the critical value of emergency brake, thereby make second ratchet wheel keep in the original position always with first ratchet wheel is engaged, thereby to the spacing of linkage axle rod, and then avoid lifting lever to pull up and lead to clamp lock rail, can effectively prevent the safety tongs main part be triggered by mistake, reduced the cost of maintenance.

Description

Technical Field

[0001] This utility model relates to the technical field of elevator safety clamps, and more specifically, to an emergency release device for elevator safety clamps and an anti-accidental contact locking mechanism. Background Technology

[0002] The safety brake is a safety protection device for elevators. Under the control of the speed governor, when the elevator speed exceeds the limit (or rated speed) set by the speed governor, or in the event of a breakage or slack in the suspension rope, the safety brake device will bring the car to an emergency stop and clamp it onto the guide rails. It provides effective protection for the safe operation of the elevator and is generally installed on the car frame or counterweight frame.

[0003] The safety brake is used in conjunction with the speed governor. If the speed governor is not properly adjusted or the speed governor wheel is not synchronized with the car's running speed, the safety brake lifting lever will not move smoothly. If the brake is not reached before the braking threshold is reached, the lever on the safety brake will be pulled upward, causing a false action and the clamp to seize the guide rail, which will increase the maintenance cost. Therefore, we have proposed an elevator safety brake emergency release device and an anti-accidental contact locking mechanism to solve the above problems. Utility Model Content

[0004] 1. Technical problems to be solved

[0005] To address the problems existing in the prior art, the purpose of this utility model is to provide an emergency release device for elevator safety gear and an anti-accidental activation locking mechanism. It utilizes the magnetic repulsion between the strong magnetic rings sleeved on the guide sleeve to prevent the return spring located between the strong magnetic rings from being compressed and deformed when the critical value for emergency braking is reached. This keeps the second ratchet in its original position and always engages with the first ratchet, thereby limiting the linkage shaft and preventing the lifting lever from pulling upwards and causing the clamp to seize the guide rail. This effectively prevents the safety gear body from being accidentally triggered and reduces maintenance costs.

[0006] 2. Technical Solution

[0007] To solve the above problems, the present invention adopts the following technical solution.

[0008] An anti-accidental activation locking mechanism includes a safety clamp body, a clamp and a lifting lever mounted on the safety clamp body, and a linkage shaft connected to the end of the lifting lever, wherein a first ratchet is mounted on the linkage shaft;

[0009] The safety clamp body has a guide sleeve fixedly connected to the side wall and sleeved on the outside of the linkage shaft. The guide sleeve has guide holes symmetrically opened in the axial position on the outer wall.

[0010] The outer side of the guide sleeve is symmetrically fitted with strong magnetic rings, and the same magnetic poles of the strong magnetic rings correspond to each other. A return spring is installed between the strong magnetic rings.

[0011] The guide sleeve is equipped with a second ratchet that meshes with the first ratchet at one end near the lifting lever, and guide blocks that are symmetrically fixed to the inner wall of the second ratchet and slidably connected to the guide hole.

[0012] Furthermore, a fixing seat is welded to the outer wall of the linkage shaft, and an assembly hole is provided through the fixing seat;

[0013] The first ratchet has a screw hole at the location corresponding to the mounting hole.

[0014] Furthermore, one end of the guide sleeve is welded with a mounting base that is fixedly connected to the main body of the safety clamp, and the other end of the guide sleeve is integrally formed with a limiting flange.

[0015] Furthermore, one of the powerful magnetic rings abuts against the mounting base, and the other powerful magnetic ring abuts against the second ratchet.

[0016] Furthermore, the two ends of the return spring respectively abut against the surfaces of the two corresponding high-strength magnetic rings.

[0017] Furthermore, the second ratchet is located between the limiting flange and the powerful magnetic ring.

[0018] Furthermore, the direction of the helical tooth surfaces that mesh with the first ratchet and the second ratchet corresponds to the direction in which the lifting lever is pulled upward.

[0019] An elevator safety clamp emergency release device includes an anti-accidental contact locking mechanism as described in any one of the above claims.

[0020] 3. Beneficial effects

[0021] Compared with existing technologies, the advantages of this utility model are:

[0022] (1) In this solution, when the speed limiter is not adjusted properly or the speed limiter wheel and the car running speed are not synchronized, the wire rope and the safety clamp body will run out of sync. There will be an upward lifting force on the lifting lever. At this time, the magnetic repulsion between the strong magnetic rings sleeved on the guide sleeve will prevent the return spring between the strong magnetic rings from being compressed and deformed when the critical value of emergency braking is reached. This will keep the second ratchet in its original position and always mesh with the first ratchet, thereby limiting the linkage shaft rod and preventing the lifting lever from pulling upward and causing the clamp to lock the guide rail. This can effectively prevent the safety clamp body from being accidentally triggered and reduce maintenance costs.

[0023] (2) In this scheme, during emergency braking, the critical value of the magnetic force between the strong magnetic rings is broken, thereby compressing and deforming the return spring. The guide block on the second ratchet slides in conjunction with the guide hole on the guide sleeve. During the upward lifting of the lifting lever, the first ratchet continuously meshes with the second ratchet, thereby effectively preventing the linkage shaft connecting the lifting lever from reversing, ensuring the clamping force of the clamp on the guide rail, and improving the safety of the safety clamp body. Attached Figure Description

[0024] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0025] Figure 2 This is an enlarged schematic diagram of part A of the present invention;

[0026] Figure 3 This is a schematic diagram of the main structure of the safety clamp of this utility model;

[0027] Figure 4 This is a schematic diagram showing the meshing of the first ratchet and the second ratchet of this utility model;

[0028] Figure 5 This is a schematic diagram of the guide sleeve structure of this utility model;

[0029] Figure 6 This is a schematic diagram of the second ratchet structure of this utility model.

[0030] Explanation of the labels in the diagram:

[0031] 1. Safety clamp body; 2. Clamp; 3. Lifting lever; 4. Linkage shaft; 5. Fixing seat; 6. First ratchet; 7. Guide sleeve; 8. Guide hole; 9. Mounting seat; 10. Limiting flange; 11. Strong magnetic ring; 12. Return spring; 13. Second ratchet; 14. Guide block. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0033] Example:

[0034] Please see Figure 1-6 An anti-accidental locking mechanism includes a safety clamp body 1, a clamp 2 and a lifting lever 3 mounted on the safety clamp body 1, and a linkage shaft 4 connected to the end of the lifting lever 3. A first ratchet 6 is mounted on the linkage shaft 4.

[0035] The safety clamp body 1 has a guide sleeve 7 fixedly connected to the side wall and sleeved on the outside of the linkage shaft 4. The guide sleeve 7 has guide holes 8 symmetrically opened on the outer wall at the axial position.

[0036] A strong magnetic ring 11 is symmetrically sleeved on the outer side of the guide sleeve 7, and the magnetic poles of the strong magnetic ring 11 correspond to each other. A return spring 12 is installed between the strong magnetic rings 11.

[0037] The guide sleeve 7 is equipped with a second ratchet 13 that meshes with the first ratchet 6 at one end near the lifting lever 3. The inner wall of the second ratchet 13 is symmetrically fixed with guide blocks 14 that slide and connect with the guide hole 8.

[0038] It should be noted that when the anti-accidental triggering locking mechanism is in use, if the speed limiter is not adjusted properly or the speed limiter wheel and the car are not synchronized, the wire rope and the safety clamp body 1 will run out of sync. There will be an upward pulling force on the lifting lever 3. At this time, the magnetic repulsion between the strong magnetic rings 11 sleeved on the guide sleeve 7 will prevent the return spring 12 located between the strong magnetic rings 11 from being compressed and deformed when the critical value of emergency braking is not reached. This will keep the second ratchet 13 in its original position and always engage with the first ratchet 6, thereby limiting the linkage shaft 4. This will prevent the lifting lever 3 from being pulled upward and causing the clamp 2 to lock the guide rail. It can effectively prevent the safety clamp body 1 from being accidentally triggered and reduce maintenance costs.

[0039] During emergency braking, the critical magnetic force between the powerful magnetic rings 11 is broken, causing the return spring 12 to be compressed and deformed. Meanwhile, the guide block 14 on the second ratchet 13 slides in conjunction with the guide hole 8 on the guide sleeve 7. During the upward pulling of the lifting lever 3, the first ratchet 6 continuously engages with the second ratchet 13, which effectively prevents the linkage shaft 4 connected to the lifting lever 3 from reversing, thereby ensuring the clamping force of the clamp 2 on the guide rail and improving the safety of the safety clamp body 1.

[0040] like Figure 2 , Figure 3 As shown, a fixing seat 5 is welded to the outer wall of the linkage shaft 4, and an assembly hole is provided through the fixing seat 5.

[0041] The first ratchet 6 has a screw hole at the part corresponding to the assembly hole;

[0042] It should be noted that this facilitates the mounting of the first ratchet 6 onto the fixed seat 5 welded to the outer wall of the linkage shaft 4.

[0043] like Figure 4 , Figure 5As shown, one end of the guide sleeve 7 is welded with a mounting base 9 that is fixedly connected to the safety clamp body 1, and the other end of the guide sleeve 7 is integrally formed with a limiting flange 10. One of the strong magnetic rings 11 abuts against the mounting base 9, and the other strong magnetic ring 11 abuts against the second ratchet 13. The two ends of the return spring 12 abut against the surfaces of the corresponding two strong magnetic rings 11 respectively. The second ratchet 13 is located between the limiting flange 10 and the strong magnetic rings 11.

[0044] It should be noted that the limiting flange 10 is used to limit the strong magnetic ring 11 and the second ratchet 13, preventing the strong magnetic ring 11 and the second ratchet 13 from disengaging from the guide sleeve 7.

[0045] like Figure 2 As shown, the direction of the helical tooth surface that meshes with the first ratchet 6 and the second ratchet 13 corresponds to the direction in which the lifting lever 3 is pulled upward.

[0046] It should be noted that during the upward pulling of the lifting lever 3, the first ratchet 6 is continuously engaged with the second ratchet 13, which can effectively prevent the linkage shaft 4 connected to the lifting lever 3 from reversing, thereby ensuring the clamping force of the clamp 2 on the guide rail and improving the safety of the safety clamp body 1.

[0047] An elevator safety clamp emergency release device includes the aforementioned anti-accidental contact locking mechanism.

[0048] In use: When the speed limiter is not adjusted properly or the speed limiter wheel is not synchronized with the car's running speed, the wire rope and the safety clamp body 1 will run out of sync, resulting in an upward pulling force on the lifting lever 3. At this time, the magnetic repulsion between the strong magnetic rings 11 sleeved on the guide sleeve 7 prevents the return spring 12 located between the strong magnetic rings 11 from being compressed and deformed when the critical value of emergency braking is not reached. This keeps the second ratchet 13 in its original position and always engaged with the first ratchet 6, thereby limiting the linkage shaft 4. This prevents the lifting lever 3 from pulling upward and causing the clamp 2 to seize the guide rail, effectively preventing the safety clamp body 1 from being accidentally triggered and reducing maintenance costs.

[0049] During emergency braking, the critical magnetic force between the powerful magnetic rings 11 is broken, causing the return spring 12 to be compressed and deformed. Meanwhile, the guide block 14 on the second ratchet 13 slides in conjunction with the guide hole 8 on the guide sleeve 7. During the upward lifting of the lifting lever 3, the first ratchet 6 continuously engages with the second ratchet 13, thereby effectively preventing the linkage shaft 4 connected to the lifting lever 3 from reversing, thus ensuring the clamping force of the clamp 2 on the guide rail. The powerful magnetic rings 11 are neodymium magnets.

[0050] The above description is merely a preferred embodiment of this utility model; however, the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and its improved concept, should be included within the protection scope of this utility model.

Claims

1. A mistaken touch prevention locking mechanism comprising a safety pawl body (1), a clamp (2) and a pull lever (3) installed on the safety pawl body (1), and a linkage shaft rod (4) connected to the end of the pull lever (3), characterized in that: The first ratchet (6) is installed on the linkage shaft (4); The safety clamp body (1) is fixedly connected to a guide sleeve (7) sleeved on the outside of the linkage shaft (4), and the guide sleeve (7) has guide holes (8) symmetrically opened on the outer wall of the outer wall. The outer side of the guide sleeve (7) is symmetrically fitted with a strong magnetic ring (11), and the same magnetic poles of the strong magnetic ring (11) correspond to each other. A return spring (12) is installed between the strong magnetic rings (11). The guide sleeve (7) is equipped with a second ratchet (13) that meshes with the first ratchet (6) at one end near the lifting lever (3). The inner wall of the second ratchet (13) is symmetrically fixed with guide blocks (14) that slide and connect with the guide hole (8).

2. The anti-accidental touch locking mechanism according to claim 1, characterized in that: The outer wall of the linkage shaft (4) is welded with a fixing seat (5), and the fixing seat (5) is provided with an assembly hole. The first ratchet (6) has a screw hole at the part corresponding to the assembly hole.

3. The anti-accidental touch locking mechanism according to claim 1, characterized in that: One end of the guide sleeve (7) is welded with a mounting base (9) that is fixedly connected to the safety clamp body (1), and the other end of the guide sleeve (7) is integrally formed with a limiting flange (10).

4. The anti-accidental touch locking mechanism according to claim 3, characterized in that: One of the powerful magnetic rings (11) abuts against the mounting base (9), and the other powerful magnetic ring (11) abuts against the second ratchet (13).

5. The anti-accidental touch locking mechanism according to claim 1, characterized in that: The two ends of the return spring (12) abut against the surfaces of the two corresponding strong magnetic rings (11).

6. The anti-accidental touch locking mechanism according to claim 3, characterized in that: The second ratchet (13) is located between the limiting flange (10) and the powerful magnetic ring (11).

7. The anti-accidental touch locking mechanism according to claim 1, characterized in that: The direction of the helical tooth surface that meshes with the first ratchet (6) and the second ratchet (13) corresponds to the direction in which the lifting lever (3) is pulled upward.

8. An emergency release device for elevator safety clamps, characterized in that: The invention includes an anti-accidental touch locking mechanism as described in any one of claims 1-7.

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