Progressive safety tongs
By designing the linked active pliers and the dynamic clamping body in the elevator safety pliers, combined with the transmission component, multiple stops of the stop clamps are exposed to the elevator track at the same time, solving the problem of the traditional elevator safety pliers and unstable. The stability and safety of emergency stop.
Patent Information
- Application Number
- CN202421088346.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-20
- Publication Date
- 2025-01-24
- Estimated Expiration
- 2034-05-20
AI Technical Summary
During the emergency stop operation of traditional elevator safety pliers, there is a lack of effective linkage between the jigs, resulting in unstable emergency stops. The contact time between the jigs and the elevator track is different, which can easily lead to excessive stress on one side of the elevator track, resulting in deformation and damage.
A gradual safety pliers are designed to use the linked structure of active pliers and the dynamic clamp body. Through the transmission component, multiple stops are used to close the elevator track at the same time to ensure that the elevator stops quickly and evenly distributes the force.
The stability and safety of the emergency stop of the elevator are achieved, and the elevator orbit is avoided by the deformation of the elevator's orbital due to excessive unilateral force.
Smart Images
Figure CN222389339U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of safety clamps, in particular to a progressive safety clamp. Background Art
[0002] The safety clamp is a very important part of the elevator safety system. Its main function is to quickly clamp the elevator to the elevator track when the elevator fails, loses power or is in emergency braking, so as to prevent the elevator from falling and ensure the safety of passengers. It is usually used in conjunction with the elevator speed limiter.
[0003] However, the traditional technology lacks effective linkage measures between the multiple groups of blocks in the elevator safety clamp, which makes it difficult for the blocks to contact the elevator track at the same time when performing an emergency stop operation, making the emergency stop of the elevator unstable. In addition, there is a difference in the contact time between the blocks and the elevator track, which can easily cause excessive force on one side of the elevator track, resulting in deformation and damage.
[0004] Therefore, the utility model provides a progressive safety clamp to solve the above problems. Utility Model Content
[0005] In view of the deficiencies in the prior art, the utility model provides a progressive safety clamp to solve the above problems.
[0006] To achieve the above objectives, the utility model is implemented through the following technical solutions: a progressive safety clamp, comprising an active clamp body and a driven clamp body, two guide blocks are fixedly connected to the middle part of the inner side of the active clamp body and the driven clamp body, a stop clamp is slidably connected to each of the guide blocks, the bottom end of the stop clamp is fixedly connected to a linkage frame, the bottom end of the linkage frame is fixedly connected to a linkage rod, the inside of the active clamp body and the driven clamp body are fixedly connected to a U-shaped spring, a transmission assembly is arranged between one end of the active clamp body and the driven clamp body, and the transmission assembly is used to cooperate with the stop clamp to form an emergency stop of the elevator.
[0007] Preferably, the transmission assembly includes an active square shaft, a rope head vertical plate, a transmission plate, an active linkage plate, a driven square shaft, a guide plate and a driven linkage plate, the bottom end of the active caliper body is rotatably connected to the active square shaft, one end of the active caliper body is vertically slidably connected to the rope head vertical plate, the bottom end of the rope head vertical plate is rotatably connected to the transmission plate, and the end of the transmission plate away from the rope head vertical plate is fixedly connected to the active square shaft, the end of the active square shaft close to the transmission plate is fixedly connected to the active linkage plate, the bottom end of the driven caliper body is rotatably connected to the driven square shaft, the outer sides of the active square shaft and the driven square shaft are fixedly connected to two guide plates, and the four linkage rods are respectively slidably connected to the middle of the four guide plates, and one end of the driven square shaft is fixedly connected to the driven linkage plate.
[0008] Preferably, the transmission assembly also includes a limit frame, a reset switch, a conduction rod, an extrusion plate and a coil spring. The driven clamp body is fixedly connected to the limit frame at one end close to the driven linkage plate, and the reset switch is fixedly connected to the top of one end of the limit frame. A conduction rod is rotatably connected between the driven linkage plate and the active linkage plate, and the conduction rod is also slidably connected to one end of the limit frame. The conduction rod is fixedly connected to the extrusion plate at one end close to the driven linkage plate, and a coil spring is fixedly connected between one side of the extrusion plate and the limit frame, and the top of the rope head vertical plate is fixedly connected to a rope head clamp.
[0009] Preferably, a guide slope is provided at one end of the guide block, a transmission slope is provided at one end of the stop clamp block close to the guide slope, and the guide slope is in contact with the transmission slope.
[0010] Preferably, both ends of the active caliper body and the driven caliper body are provided with square shaft sleeves, and the active square shaft and the driven square shaft are connected inside the square shaft sleeves.
[0011] Preferably, a transmission through slot is provided in the middle of the guide plate, and the linkage rod is slidably connected inside the transmission through slot.
[0012] Beneficial Effects
[0013] The utility model provides a progressive safety clamp. Compared with the prior art, it has the following beneficial effects:
[0014] The progressive safety clamp, through the structural coordination of the transmission assembly, can utilize the simultaneous flipping of the active square shaft and the driven square shaft to cause multiple stop clamps to approach the elevator track at the same time, so that the elevator can stop quickly. At the same time, the force on the elevator track is more stable, avoiding deformation due to excessive force on one side. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a schematic diagram of the utility model;
[0016] Figure 2 It is a side view of the utility model;
[0017] Figure 3 This is a schematic diagram of the connection structure of the guide block and the stop clamp block of the utility model;
[0018] Figure 4 It is a structural schematic diagram of the transmission assembly of the utility model;
[0019] Figure 5 The utility model is a schematic diagram of the connection structure between the active linkage plate, the linkage rod and the limit frame.
[0020] In the figure, 1, active clamp body; 2, driven clamp body; 3, guide block; 4, stop clamp block; 5, linkage frame; 6, linkage rod; 7, U-shaped spring; 8, transmission assembly; 9, active square shaft; 10, rope head vertical plate; 11, transmission plate; 12, active linkage plate; 13, driven square shaft; 14, guide plate; 15, driven linkage plate; 16, limit frame; 17, reset switch; 18, conduction rod; 19, extrusion plate; 20, spiral spring; 21, rope head clamp. DETAILED DESCRIPTION
[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0022] Embodiment 1:
[0023] See also Figure 1-5 A progressive safety clamp comprises an active clamp body 1 and a driven clamp body 2. Two guide blocks 3 are fixedly connected to the middle of the inner side of the active clamp body 1 and the driven clamp body 2. A stop clamp block 4 is slidably connected to each guide block 3. A linkage frame 5 is fixedly connected to the bottom end of the stop clamp block 4. A linkage rod 6 is fixedly connected to the bottom end of the linkage frame 5. U-shaped springs 7 are fixedly connected to the inside of the active clamp body 1 and the driven clamp body 2. A transmission assembly 8 is arranged between one end of the active clamp body 1 and the driven clamp body 2. The transmission assembly 8 is used to cooperate with the stop clamp block 4 to form an emergency stop of the elevator;
[0024] In detail, a guide slope is provided at one end of the guide block 3, and a transmission slope is provided at one end of the stop clamp block 4 close to the guide slope, and the guide slope fits the transmission slope. By setting the guide slope and the transmission slope, when the stop clamp block 4 moves upward, the stop clamp block 4 can move along the transmission slope.
[0025] Furthermore, a row of needle rollers is provided at the guide slope to improve the smoothness of the stop clamp 4 during displacement;
[0026] Wherein, guard plates are provided on both sides of the guide block 3, and a limit slide groove with the same slope as the guide slope is provided at the guard plate, and a limit slide block is fixedly connected to a side of the stop clamp block 4 close to the limit slide groove, and the limit slide block is slidably connected inside the limit slide groove;
[0027] Embodiment 2:
[0028] See also Figure 1-5, this embodiment provides a technical solution based on the first embodiment: the transmission assembly 8 includes an active square shaft 9, a rope head vertical plate 10, a transmission plate 11, an active linkage plate 12, a driven square shaft 13, a guide plate 14 and a driven linkage plate 15, the bottom end of the active clamp body 1 is rotatably connected with the active square shaft 9, one end of the active clamp body 1 is vertically slidably connected with the rope head vertical plate 10, the bottom end of the rope head vertical plate 10 is rotatably connected with the transmission plate 11, and the end of the transmission plate 11 away from the rope head vertical plate 10 is fixedly connected with the active square shaft 9, the end of the active square shaft 9 close to the transmission plate 11 is fixedly connected with the active linkage plate 12, the bottom end of the driven clamp body 2 is rotatably connected with the driven square shaft 13, the outer sides of the active square shaft 9 and the driven square shaft 13 are fixedly connected with two guide plates 14, and the four linkage rods 6 are respectively slidably connected to the middle of the four guide plates 14, and one end of the driven square shaft 13 is fixedly connected with the driven linkage plate 15;
[0029] Furthermore, both ends of the active caliper body 1 and the driven caliper body 2 are provided with square shaft sleeves, and the active square shaft 9 and the driven square shaft 13 are connected inside the square shaft sleeves. By using the setting of the square shaft sleeves, the active square shaft 9 and the driven square shaft 13 will not interfere with the active caliper body 1 and the driven caliper body 2 when they rotate, thereby ensuring the application effect of the active square shaft 9;
[0030] A transmission slot is provided in the middle of the guide plate 14, and the linkage rod 6 is slidably connected inside the transmission slot. By using the setting of the transmission slot, when the guide plate 14 rotates upward, the adaptive displacement of the linkage rod 6 inside the transmission slot can be used to drive the stop clamp 4 to adjust its position.
[0031] The transmission assembly 8 also includes a limit frame 16, a reset switch 17, a transmission rod 18, an extrusion sheet 19 and a coil spring 20. The end of the driven clamp body 2 close to the driven linkage plate 15 is fixedly connected to the limit frame 16, and the top of one end of the limit frame 16 is fixedly connected to the reset switch 17. The transmission rod 18 is rotatably connected between the driven linkage plate 15 and the active linkage plate 12, and the transmission rod 18 is also slidably connected to one end of the limit frame 16. The end of the transmission rod 18 close to the driven linkage plate 15 is fixedly connected to the extrusion sheet 19, and a coil spring 20 is fixedly connected between one side of the extrusion sheet 19 and the limit frame 16. The top of the rope head vertical plate 10 is fixedly connected to the rope head clamping plate 21.
[0032] In summary, with the connection between the active square shaft 9 and the active linkage plate 12, during the rotation of the active square shaft 9, the active linkage plate 12 can be used to pull the transmission rod 18, and the transmission rod 18 can be used to pull the driven linkage plate 15, so that the driven square shaft 13 can rotate synchronously, thereby driving the four guide plates 14 to flip upward at the same time. Under the connection between the guide plate 14 and the linkage rod 6, the linkage rod 6 is pushed by the guide plate 14 to drive the stop clamp 4 to slide along the guide block 3, thereby driving multiple stop clamps 4 to contact the elevator track at the same time, thereby forming an emergency stop of the elevator;
[0033] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.
[0034] When working, firstly, the active clamp body 1 and the driven clamp body 2 are assembled on the mounting beam of the elevator car, and the travel track of the elevator is located between the corresponding two stop clamps 4, and the external wire rope is passed through the rope head clamp plate 21 and connected to the rope head vertical plate 10. When the elevator runs too fast, the wire rope pulls the rope head vertical plate 10, causing the rope head vertical plate 10 to slide and pull the transmission plate 11. Since the transmission plate 11 is supported by the active square shaft 9, it can drive the active square shaft 9 to rotate, and cooperate with the active square shaft 9 and the active The connection of the linkage plate 12 allows the active linkage plate 12 to pull the transmission rod 18 during the rotation of the active square shaft 9, and the transmission rod 18 can be used to pull the driven linkage plate 15, so that the driven square shaft 13 can rotate synchronously, thereby driving the four guide plates 14 to flip upward at the same time. Under the connection between the guide plate 14 and the linkage rod 6, the linkage rod 6 is pushed by the guide plate 14 to drive the stop clamp 4 to slide along the guide block 3, thereby driving multiple stop clamps 4 to contact the elevator track at the same time, thereby forming an emergency stop of the elevator.
[0035] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.
[0036] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A progressive safety clamp, characterized in that: The invention comprises an active clamp body (1) and a driven clamp body (2), wherein two guide blocks (3) are fixedly connected to the middle of the inner sides of the active clamp body (1) and the driven clamp body (2), and each guide block (3) is slidably connected to a stop clamp block (4), and the bottom end of the stop clamp block (4) is fixedly connected to a linkage frame (5), and the bottom end of the linkage frame (5) is fixedly connected to a linkage rod (6), and the inside of the active clamp body (1) and the driven clamp body (2) are fixedly connected to a U-shaped spring (7), and a transmission assembly (8) is arranged between one end of the active clamp body (1) and the driven clamp body (2), and the transmission assembly (8) is used to cooperate with the stop clamp block (4) to form an emergency stop of the elevator.
2. A progressive safety gear according to claim 1, characterized in that: The transmission assembly (8) comprises a driving square shaft (9), a rope head vertical plate (10), a transmission plate (11), a driving linkage plate (12), a driven square shaft (13), a guide plate (14) and a driven linkage plate (15); the bottom end of the active clamp body (1) is rotatably connected to the driving square shaft (9); one end of the active clamp body (1) is vertically slidably connected to the rope head vertical plate (10); the bottom end of the rope head vertical plate (10) is rotatably connected to the transmission plate (11), and the transmission plate (11) is away from the rope head vertical plate (10). One end of the driving square shaft (9) is fixedly connected to the driving square shaft (9), one end of the driving square shaft (9) close to the transmission plate (11) is fixedly connected to the driving linkage plate (12), the bottom end inside the driven caliper body (2) is rotatably connected to the driven square shaft (13), the outer sides of the driving square shaft (9) and the driven square shaft (13) are fixedly connected to two guide plates (14), and the linkage rods (6) at four locations are respectively slidably connected to the middle parts of the four guide plates (14), and one end of the driven square shaft (13) is fixedly connected to the driven linkage plate (15).
3. A progressive safety gear according to claim 2, characterized in that: The transmission assembly (8) further comprises a limit frame (16), a reset switch (17), a transmission rod (18), an extrusion sheet (19) and a coil spring (20); one end of the driven clamp body (2) close to the driven linkage plate (15) is fixedly connected to the limit frame (16); the top of one end of the limit frame (16) is fixedly connected to the reset switch (17); a transmission rod (18) is rotatably connected between the driven linkage plate (15) and the active linkage plate (12); the transmission rod (18) is also slidably connected to one end of the limit frame (16); one end of the transmission rod (18) close to the driven linkage plate (15) is fixedly connected to the extrusion sheet (19); one side of the extrusion sheet (19) is fixedly connected to the limit frame (16); and the top of the rope head vertical plate (10) is fixedly connected to a rope head clamp (21).
4. A progressive safety gear according to claim 1, characterized in that: A guide slope is provided at one end of the guide block (3), a transmission slope is provided at one end of the stop clamp block (4) close to the guide slope, and the guide slope is in contact with the transmission slope.
5. A progressive safety gear according to claim 2, characterized in that: Both ends of the active caliper body (1) and the driven caliper body (2) are provided with square shaft sleeves, and the active square shaft (9) and the driven square shaft (13) are connected inside the square shaft sleeves.
6. A progressive safety gear according to claim 2, characterized in that: A transmission slot is provided in the middle of the guide plate (14), and the linkage rod (6) is slidably connected inside the transmission slot.