Safety tongs triggering device and elevator

Abstract

The invention relates to a safety tongs triggering device and an elevator. The safety tongs triggering device comprises an upper cross beam assembly; the rotating shaft assembly is rotationally assembled with the upper cross beam assembly, a safety tongs lifting arm is arranged on the rotating shaft assembly, and the safety tongs lifting arm can be connected with the safety tongs through a rod piece so as to control the safety tongs; the spring assembly is arranged on the upper cross beam assembly, is connected with the rotating shaft assembly and is used for applying elastic pulling force to the rotating shaft assembly, so that the rotating shaft assembly drives the safety tongs lifting arm to rotate towards the direction in which the safety tongs act and the elevator is stopped; the armature assembly is arranged on the rotating shaft assembly; the electromagnet assembly can be magnetically attracted to or separated from the armature assembly; and the power assembly is arranged on the upper cross beam assembly and is assembled with the electromagnet assembly. According to the scheme, a steel wire rope and a tensioning device do not need to be configured, the structure is simple and compact, the occupied well space is small, the equipment investment cost is lower, debugging and maintenance are convenient, in addition, a power transmission chain is shorter, the response speed of the safety tongs triggering device is high, misoperation can be avoided, and the safety and reliability of elevator operation are improved.

Description

Technical Field

[0001] The present application relates to the technical field of elevator emergency braking, and in particular to a safety clamp triggering device and an elevator. Background Art

[0002] Nowadays, elevators have been widely used in various high-rise and even super-high-rise buildings such as buildings, commercial and office buildings. Whether the elevator can operate safely and reliably will largely determine the life safety of the passengers. Therefore, in order to improve the safety and reliability of elevator operation, elevators are usually equipped with safety clamps and safety clamp triggering devices. The traditional safety clamp triggering device is a mechanical speed limiter, and it also needs to be equipped with a wire rope and a tensioning device. When the car is abnormally overspeeding, the mechanical speed limiter will be activated, and the safety clamp will be triggered by keeping the wire rope still, thereby stopping the car to avoid accidents such as casualties or equipment damage. However, the traditional mechanical speed limiter has a complex structure, occupies a large hoistway space, is not convenient for debugging and maintenance, and has a high investment cost. In addition, the transmission chain between the mechanical speed limiter and the safety clamp is long, which is easy to cause untimely response or malfunction, affecting the safe operation of the elevator. Summary of the invention

[0003] Based on this, it is necessary to provide a safety clamp triggering device and an elevator to address the problems of complex structure, large space occupation, high investment cost, slow response speed or malfunction.

[0004] On the one hand, the present application proposes a safety clamp triggering device, which includes:

[0005] Upper crossbeam assembly;

[0006] A rotating shaft assembly, the rotating shaft assembly is rotatably assembled with the upper cross beam assembly, the rotating shaft assembly is provided with a safety clamp lifting arm, and the safety clamp lifting arm can be connected to the safety clamp through a rod to operate the safety clamp;

[0007] a spring assembly, the spring assembly being mounted on the upper crossbeam assembly and connected to the rotating shaft assembly, and being used for applying elastic tension to the rotating shaft assembly so that the rotating shaft assembly drives the safety clamp lifting arm to rotate in a direction to actuate the safety clamp and stop the elevator;

[0008] An armature assembly, wherein the armature assembly is mounted on the rotating shaft assembly;

[0009] An electromagnet assembly, wherein the electromagnet assembly can be magnetically attracted to or separated from the armature assembly;

[0010] A power assembly is installed on the upper beam assembly and assembled with the electromagnet assembly.

[0011] The safety clamp triggering device of the above scheme is applied to the elevator and cooperates with the safety clamp to realize emergency braking of the car when the elevator has abnormal operation. Specifically, when the elevator is operating normally, the safety clamp triggering device is in standby state, the power assembly is not running, the electromagnet assembly is energized and attracted with the armature assembly, because the attraction torque is greater than the spring torque applied by the spring assembly to the shaft assembly at this time, the shaft assembly can remain stationary in a force balance state, thereby ensuring that the safety clamp lifting arm remains stationary, the safety clamp is not triggered by the safety clamp lifting arm at this time, the wedge of the safety clamp does not bite the guide rail, and the car is normally lifted and lowered; when the abnormal fault causes the elevator to run overspeed, the elevator central control system detects the elevator overspeed and immediately cuts off the power supply of the electromagnet assembly, so that the attraction torque between the electromagnet assembly and the armature assembly disappears, the force balance state of the shaft assembly is broken, and then it rotates rapidly under the action of the spring torque of the spring assembly, and at the same time drives the safety clamp lifting arm to rotate upward to trigger the safety clamp, and the safety clamp immediately acts to make the wedge bite the guide rail to realize emergency braking of the car. Compared with the existing mechanical speed limiter, the safety clamp trigger device of this solution does not need to be equipped with a wire rope and a tensioning device. It has a simpler and more compact structure, occupies less hoistway space, has lower equipment investment costs, and is easy to debug and maintain. In addition, the power transmission chain is shorter, which makes the safety clamp trigger device respond faster and avoids false operations, greatly improving the safety and reliability of elevator operation.

[0012] The technical solution of this application is further described below:

[0013] In one embodiment, the armature assembly includes a rotating bracket, a first armature and a second armature, the rotating shaft assembly includes a main shaft, the rotating bracket is mounted on the main shaft, the first armature and the second armature are respectively arranged at both ends of the rotating bracket in the length direction and are respectively located on two opposite sides of the rotating bracket, the electromagnet assembly includes a first support frame, a second support frame, a first mounting bracket, a second mounting bracket, a first electromagnet and a second electromagnet, the first support frame and the second support frame are respectively connected to the power assembly, the first mounting bracket is mounted on the first support frame, the second mounting bracket is mounted on the second support frame, and the first mounting bracket and the second mounting bracket are respectively located on opposite sides of the rotating bracket, the first electromagnet is arranged on the first mounting bracket and is arranged in alignment with the first armature, and the second electromagnet is arranged on the second mounting bracket and is arranged in alignment with the second armature.

[0014] In one embodiment, the armature assembly further includes a first spring unit and a second spring unit, the first armature is elastically and floatingly connected to the rotating bracket via the first spring unit, and the second armature is elastically and floatingly connected to the rotating bracket via the second spring unit.

[0015] In one of the embodiments, the rotating shaft assembly further includes a support beam, which is disposed on one side of the upper cross beam assembly, and the support beam cooperates with the cantilever section of the main shaft extending out of the upper cross beam assembly.

[0016] In one embodiment, the safety clamp triggering device also includes a switch bracket, a limit switch and a limit contact, the switch bracket is installed on the bracket beam, the limit switch is installed on the switch bracket, and the limit contact is installed on the rotating bracket and arranged opposite to the limit switch.

[0017] In one of the embodiments, the safety clamp triggering device further includes a limiting assembly, and the limiting assembly is arranged on the upper beam assembly and located above one end of the rotating bracket.

[0018] In one embodiment, the spring assembly includes a linkage arm, a spring seat, a spring rod, an actuating spring and a positioning assembly, the spring seat is mounted on the upper cross beam assembly, the spring rod is slidably inserted into the spring seat, one end of the linkage arm is fixedly connected to the main shaft, the other end of the linkage arm is rotatably connected to one end of the spring rod, the actuating spring is sleeved on the spring rod, the positioning assembly is screwed to the spring rod, and the two ends of the actuating spring respectively abut the spring seat and the positioning assembly.

[0019] In one embodiment, the power assembly includes a mounting plate, a base plate, a worm, a worm wheel, a support unit and a driving unit. The base plate is assembled with the upper beam assembly via the mounting plate. The support unit is mounted on the base plate. The worm is rotatably disposed on the support unit and connected to the driving unit. The driving unit is connected to the support unit. The worm wheel is rotatably connected to the shaft assembly and meshes with the worm. The electromagnet assembly is mounted on the end face of the worm wheel.

[0020] In one embodiment, the support unit includes a first bearing seat, a second bearing seat and a motor bracket, the first bearing seat, the second bearing seat and the motor bracket are arranged at intervals along the same axial direction, the opposite ends of the worm are rotatably connected to the first bearing seat and the second bearing seat respectively, the driving unit includes a coupling and a driving motor, the driving motor is installed on the side of the motor bracket away from the second bearing seat, the coupling is arranged between the second bearing seat and the motor bracket, and connects the worm to the driving motor.

[0021] On the other hand, the present application also proposes an elevator, which comprises the safety gear triggering device as described above. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings constituting a part of the present application are used to provide a further understanding of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application.

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0024] Figure 1 This is a schematic structural diagram of a safety clamp triggering device according to an embodiment of the present application.

[0025] Figure 2 for Figure 1 Schematic diagram of the structure of the left view.

[0026] Figure 3 for Figure 1 Schematic diagram of the front view structure.

[0027] Figure 4 for Figure 1 Schematic diagram of the structure from an oblique upward perspective.

[0028] Figure 5 for Figure 4 A schematic diagram of the structure from another perspective.

[0029] Description of reference numerals:

[0030] 100, safety clamp triggering device; 10, upper crossbeam assembly; 11, first upper crossbeam; 12, second upper crossbeam; 13, connecting plate; 20, rotating shaft assembly; 21, main shaft; 22, bracket beam; 30, safety clamp lifting arm; 40, spring assembly; 41, linkage arm; 42, spring seat; 43, spring rod; 44, actuating spring; 45, positioning assembly; 50, armature assembly; 51, rotating bracket; 52, first armature; 53, second armature; 60, electromagnet assembly; 61. First support frame; 62. Second support frame; 63. First mounting bracket; 64. Second mounting bracket; 65. First electromagnet; 66. Second electromagnet; 70. Power assembly; 71. Mounting plate; 72. Bottom plate; 73. Worm; 74. Worm wheel; 75. First bearing seat; 76. Second bearing seat; 77. Motor bracket; 78. Coupling; 79. Drive motor; 80. Switch bracket; 80a. Limit switch; 80b. Limit contact; 90. Limit assembly. DETAILED DESCRIPTION

[0031] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0032] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0033] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0034] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0035] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0036] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

[0037] See also Figures 1 to 5 , which is a safety clamp triggering device 100 shown in one embodiment of the present application, includes an upper beam assembly 10, a rotating shaft assembly 20, a spring assembly 40, an armature assembly 50, an electromagnet assembly 60 and a power assembly 70.

[0038] Among them, the upper beam assembly 10 is the main structural component of the entire safety clamp trigger device 100, which is used to load the integrated shaft assembly 20, spring assembly 40, armature assembly 50, electromagnet assembly 60 and power assembly 70, making the device structure stable and compact, and occupying less hoistway installation space.

[0039] Please continue reading Figure 2 Specifically, the upper crossbeam assembly 10 in this embodiment includes a first upper crossbeam 11, a second upper crossbeam 12 and a connecting plate 13. The first upper crossbeam 11 and the second upper crossbeam 12 are both channel steel structures, and the bottom surfaces are arranged side by side and spaced apart, and the two notches are arranged opposite to each other. The connecting plate 13 is installed across the first upper crossbeam 11 and the second upper crossbeam 12, and the installation method can be any one of screw connection, welding, snap connection, etc., so that the structure of the upper crossbeam assembly 10 is simple and has good structural stability.

[0040] The rotating shaft assembly 20 is rotatably assembled with the upper cross beam assembly 10 . A safety clamp lifting arm 30 is disposed on the rotating shaft assembly 20 . The safety clamp lifting arm 30 can be connected to the safety clamp through a rod to operate the safety clamp.

[0041] For example, the safety clamp lifting arm is located exactly in the gap between the first upper cross beam 11 and the second upper cross beam 12, and the safety clamp is arranged below the safety clamp lifting arm 30, so that the safety clamp lifting arm 30 only needs to be rotated upward to trigger the safety clamp to work through the rod to stop the elevator car. The triggering action of the safety clamp lifting arm 30 is simple, and the triggering of the safety clamp is reliable and effective.

[0042] The spring assembly 40 is installed on the upper beam assembly 10 and connected to the rotating shaft assembly 20, and is used to apply elastic tension to the rotating shaft assembly 20 so that the rotating shaft assembly 20 drives the safety clamp lifting arm 30 to rotate in the direction of actuating the safety clamp and stopping the elevator; the armature assembly 50 is installed on the rotating shaft assembly 20; the electromagnet assembly 60 can be magnetically attracted or separated from the armature assembly 50; the power assembly 70 is installed on the upper beam assembly 10 and assembled with the electromagnet assembly 60.

[0043] It can be understood that the electromagnet assembly 60 and the power assembly 70 are electrically connected to the elevator central control system respectively, and the central control system performs control work.

[0044] In summary, the implementation of the technical solution of this embodiment will have the following beneficial effects: the safety clamp triggering device 100 of the above-mentioned solution is applied to the elevator and cooperates with the safety clamp to realize emergency braking of the car when the elevator has an abnormal operation. Specifically, when the elevator is operating normally, the safety clamp triggering device 100 is in a standby state, the power assembly 70 is not running, the electromagnet assembly 60 is energized and attracted to the armature assembly 50. Since the attraction torque is greater than the spring torque applied by the spring assembly 40 to the shaft assembly 20, the shaft assembly 20 can remain stationary in a force balance state, thereby ensuring that the safety clamp lifting arm 30 remains stationary. At this time, the safety clamp is not triggered by the safety clamp lifting arm 30, the wedge block of the safety clamp does not bite the guide rail, and the car is normally lifted and lowered.

[0045] When an abnormal fault causes the elevator to overspeed, the elevator central control system detects the elevator overspeed and immediately cuts off the power supply of the electromagnet assembly 60, so that the attraction torque between the electromagnet assembly 60 and the armature assembly 50 disappears, the force balance state of the rotating shaft assembly 20 is broken, and then it rotates rapidly under the spring torque of the spring assembly 40, and at the same time drives the safety clamp lifting arm 30 to rotate upward to trigger the safety clamp, and the safety clamp immediately acts to make the wedge bite the guide rail to achieve emergency braking of the car. Compared with the existing mechanical speed limiter, the safety clamp triggering device 100 of this scheme does not need to be equipped with a wire rope and a tensioning device, and the structure is simpler and more compact, occupies less hoistway space, has a lower equipment investment cost, and is easy to debug and maintain. In addition, the power transmission chain is shorter, so that the safety clamp triggering device 100 has a fast response speed and can avoid misoperation, which greatly improves the safety and reliability of elevator operation.

[0046] Please continue reading Figures 1 to 3 On the basis of the above embodiment, the armature assembly 50 includes a rotating bracket 51, a first armature 52 and a second armature 53, the shaft assembly 20 includes a main shaft 21, the rotating bracket 51 is mounted on the main shaft 21, the first armature 52 and the second armature 53 are respectively arranged at both ends of the rotating bracket 51 in the length direction and are respectively located on two opposite sides of the rotating bracket 51, the electromagnet assembly 60 includes a first support frame 61, a second support frame 62, a first mounting bracket 63, a second mounting bracket 64, a first electromagnet 65 and a second electromagnet 66, the first support frame 61 and the second support frame 62 are respectively connected to the power assembly 70, the first mounting bracket 63 is mounted on the first support frame 61, the second mounting bracket 64 is mounted on the second support frame 62, and the first mounting bracket 63 and the second mounting bracket 64 are respectively located on opposite sides of the rotating bracket 51, the first electromagnet 65 is arranged on the first mounting bracket 63 and is arranged in alignment with the first armature 52, and the second electromagnet 66 is arranged on the second mounting bracket 64 and is arranged in alignment with the second armature 53.

[0047] It is easy to understand that the first armature 52 and the second armature 53 are installed on the rotating bracket 51 in an inversely symmetrical manner, and the first electromagnet 65 and the second electromagnet 66 are also installed on the power assembly 70 in an inversely symmetrical manner, and can be respectively adapted to the first armature 52 and the second armature 53, so that after the first electromagnet 65 and the first armature 52 and the second electromagnet 66 and the second armature 53 are attracted, the two attraction torques generated can be in the same rotation direction, which is more helpful to overcome the spring torque of the spring assembly 40 to reliably position the rotating shaft assembly 20 when the elevator is operating normally, and prevent the safety clamp lifting arm 30 from accidentally rotating and triggering the safety clamp.

[0048] In addition, when the first electromagnet 65 and the second electromagnet 66 are powered off and the attraction torque disappears, due to the reverse symmetrical installation method, under the action of the spring torque, the two electromagnets will not hinder the corresponding armature from being released and can rotate with the rotating bracket 51, so that the safety clamp trigger device 100 has the ability to operate without power.

[0049] The first mounting bracket 63 and the second mounting bracket 64 both adopt a Z-shaped design, so that on the one hand, the first mounting bracket 63 and the second mounting bracket 64 can avoid the rotating bracket 51 to avoid interference, and on the other hand, the first electromagnet 65 and the second electromagnet 66 can be respectively extended to the bottom and the top of the rotating bracket 51 so as to align with the first armature 52 and the second armature 53.

[0050] Furthermore, the armature assembly 50 further includes a first spring unit and a second spring unit. The first armature 52 is elastically floatingly connected to the rotating bracket 51 via the first spring unit, and the second armature 53 is elastically floatingly connected to the rotating bracket 51 via the second spring unit.

[0051] After the first armature 52 and the second armature 53 are floatingly connected to the rotating bracket 51, on the one hand, it can ensure that the angles of the attraction surfaces can be adaptively adjusted when the first armature 52 and the first electromagnet 65 and the second armature 53 and the second electromagnet 66 are in contact and attracted, so as to achieve a complete fit and improve the connection reliability; on the other hand, it can avoid direct collision between the first armature 52 and the second armature 53 and the rotating bracket 51 when they are released, thereby effectively reducing the action noise of the safety clamp trigger device 100 when it is working.

[0052] Specifically, the first spring unit and the second spring unit both include a coil spring and a bolt. Through holes are respectively provided at the positions of the rotating bracket 51 corresponding to the first armature 52 and the second armature 53, and the first armature 52 and the second armature 53 are respectively provided with threaded holes aligned with the through holes. The bolts pass through the through holes and the coil springs in turn and are screwed into the corresponding threaded holes. At this time, the two ends of the coil spring respectively contact the first armature 52 and the rotating bracket 51 and the second armature 53 and the rotating bracket 51, thereby making the first armature 52 and the second armature 53 form a floating connection with the rotating bracket 51 respectively.

[0053] Please continue reading Figure 3 Furthermore, the rotating shaft assembly 20 also includes a support beam 22, which is arranged on one side of the upper beam assembly 10, and the support beam 22 cooperates with the cantilever section of the main shaft 21 extending out of the upper beam assembly 10 to support it.

[0054] Specifically, the support beam 22 is an L-shaped plate. The horizontal portion is fixed to the bottom of the upper crossbeam assembly 10 by means of screw connection or the like, and a through hole is opened in the vertical portion so as to cooperate with the cantilever section of the main shaft 21, thereby forming support for the cantilever section of the main shaft 21.

[0055] In some other embodiments, the safety clamp triggering device 100 further includes a limit assembly 90, which is disposed on the upper crossbeam assembly 10 and is located above one end of the rotating bracket 51. When the electromagnet assembly 60 loses power, the main shaft 21 drives the armature assembly 50 to rotate upward to a preset position under the action of the spring torque applied by the spring assembly 40, and the limit assembly 90 contacts the rotating bracket 51 to limit the rotation of the armature assembly 50, so as to limit the maximum range of motion of the safety clamp.

[0056] It is necessary to explain that after troubleshooting, the safety clamp needs to be restored to the initial working state in order to work again, and accordingly, the safety clamp trigger device 100 also needs to be rotated and reset. The reset action process is roughly as follows: the central control system energizes the electromagnet assembly 60, and at the same time, the power assembly 70 drives the electromagnet assembly 60 to rotate until it is attracted to the armature assembly 50, and the power assembly 70 stops, completing the safety clamp reset process; then the power assembly 70 outputs a reverse driving force, driving the electromagnet assembly 60 and the armature assembly 50 to rotate downward, and overcomes the spring torque with the help of the attraction torque, so that the shaft assembly 20 drives the safety clamp lifting arm 30 to rotate downward, thereby operating the safety clamp wedge block through the rod to loosen the guide rail and release the brake on the elevator car.

[0057] Please continue reading Figure 4 In addition, the safety clamp triggering device 100 also includes a switch bracket 80, a limit switch 80a and a limit contact 80b. The switch bracket 80 is installed on the bracket beam 22, the limit switch 80a is installed on the switch bracket 80, and the limit contact 80b is installed on the rotating bracket 51 and arranged in alignment with the limit switch 80a.

[0058] When the armature assembly 50 rotates downward to the preset position following the shaft assembly 20, the limit contact 80b just contacts the limit switch 80a, so that the limit switch 80a is triggered and feeds back a signal to the elevator central control system. The elevator central control system controls the power assembly 70 to stop, thereby achieving timely stopping and avoiding excessive rotation of the shaft assembly 20, which may cause damage to the electromagnet assembly 60, the spring assembly 40 and other components.

[0059] Please continue reading Figure 4 and Figure 5 In some embodiments, the power assembly 70 includes a mounting plate 71, a base plate 72, a worm 73, a worm wheel 74, a support unit and a driving unit. The base plate 72 is assembled with the upper beam assembly 10 through the mounting plate 71. The support unit is mounted on the base plate 72. The worm 73 is rotatably disposed on the support unit and connected to the driving unit. The driving unit is connected to the support unit. The worm wheel 74 is rotatably connected to the shaft assembly 20 and meshes with the worm 73. The electromagnet assembly 60 is mounted on the end face of the worm wheel 74.

[0060] When working, the driving unit drives the worm 73 to rotate, and the worm 73 can then drive the worm wheel 74 to rotate, so as to drive the electromagnet assembly 60 and the armature assembly 50 to attract each other, and the electromagnet assembly 60 and the armature assembly 50 to rotate in the opposite direction and reset synchronously. The transmission ratio of the worm wheel 74 and the worm 73 is stable, the power transmission is smooth, and it has a self-locking characteristic, which can realize the self-locking function of the device in standby mode and prevent the problem of false triggering.

[0061] Of course, in other embodiments, the worm wheel 74 and worm 73 may also be replaced by a gear rack, a sprocket mechanism, a synchronous belt mechanism, etc., which are also within the protection scope of the present application.

[0062] In the above embodiment, the support unit includes a first bearing seat 75, a second bearing seat 76 and a motor bracket 77, the first bearing seat 75, the second bearing seat 76 and the motor bracket 77 are arranged at intervals along the same axis direction, the opposite ends of the worm 73 are rotatably connected with the first bearing seat 75 and the second bearing seat 76 respectively, the driving unit includes a coupling 78 and a driving motor 79, the driving motor 79 is installed on the side of the motor bracket 77 away from the second bearing seat 76, the coupling 78 is arranged between the second bearing seat 76 and the motor bracket 77, and connects the worm 73 with the driving motor 79. The structural arrangement is simple, and the support stability of the driving motor 79, the worm 73 and other components is good.

[0063] In some other embodiments, the spring assembly 40 includes a linkage arm 41, a spring seat 42, a spring rod 43, an actuating spring 44 and a positioning assembly 45. The spring seat 42 is installed on the upper beam assembly 10, and the spring rod 43 is slidably inserted into the spring seat 42. One end of the linkage arm 41 is fixedly connected to the main shaft 21, and the other end of the linkage arm 41 is rotatably connected to one end of the spring rod 43. The actuating spring 44 and the positioning assembly 45 are respectively movably mounted on the spring rod 43, and the two ends of the actuating spring 44 respectively abut the spring seat 42 and the positioning assembly 45.

[0064] The actuating spring 44 is sleeved on the spring rod 43 in a compressed state. Therefore, by forming an abutment relationship with the positioning assembly 45, it will continuously apply elastic tension to the spring rod 43, so that the spring rod 43 and the linkage arm 41 always have a tendency to move away from the main shaft 21. Therefore, when the electromagnet assembly 60 loses power and loses the attraction force on the armature assembly 50, the main shaft 21 will be pulled by the linkage arm 41 and drive the safety clamp lifting arm 30 to rotate upward to trigger the safety clamp, thereby ensuring the response speed and working reliability of the safety clamp triggering device 100.

[0065] In addition to the above, the present application further proposes an elevator, which includes the safety clamp triggering device 100 as described in any of the above embodiments.

[0066] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0067] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A safety clamp triggering device, It is characterized in that include: Upper crossbeam assembly; A rotating shaft assembly, the rotating shaft assembly is rotatably assembled with the upper cross beam assembly, the rotating shaft assembly is provided with a safety clamp lifting arm, and the safety clamp lifting arm can be connected to the safety clamp through a rod to operate the safety clamp; a spring assembly, the spring assembly being mounted on the upper crossbeam assembly and connected to the rotating shaft assembly, and being used for applying elastic tension to the rotating shaft assembly so that the rotating shaft assembly drives the safety clamp lifting arm to rotate in a direction to actuate the safety clamp and stop the elevator; An armature assembly, wherein the armature assembly is mounted on the rotating shaft assembly; An electromagnet assembly, wherein the electromagnet assembly can be magnetically attracted to or separated from the armature assembly; A power assembly is installed on the upper beam assembly and assembled with the electromagnet assembly.

2. The safety clamp triggering device according to claim 1, It is characterized in that The armature assembly includes a rotating bracket, a first armature and a second armature, the rotating shaft assembly includes a main shaft, the rotating bracket is mounted on the main shaft, the first armature and the second armature are respectively arranged at both ends of the rotating bracket in the length direction and are respectively located on two opposite sides of the rotating bracket, the electromagnet assembly includes a first support frame, a second support frame, a first mounting bracket, a second mounting bracket, a first electromagnet and a second electromagnet, the first support frame and the second support frame are respectively connected to the power assembly, the first mounting bracket is mounted on the first support frame, the second mounting bracket is mounted on the second support frame, and the first mounting bracket and the second mounting bracket are respectively located on opposite sides of the rotating bracket, the first electromagnet is arranged on the first mounting bracket and is arranged in alignment with the first armature, and the second electromagnet is arranged on the second mounting bracket and is arranged in alignment with the second armature.

3. The safety clamp triggering device according to claim 2, It is characterized in that The armature assembly further includes a first spring unit and a second spring unit. The first armature is elastically and floatingly connected to the rotating bracket via the first spring unit, and the second armature is elastically and floatingly connected to the rotating bracket via the second spring unit.

4. The safety clamp triggering device according to claim 2, It is characterized in that The rotating shaft assembly also includes a support beam, which is arranged on one side of the upper crossbeam assembly, and the support beam is supported and cooperated with the cantilever section of the main shaft extending out of the upper crossbeam assembly.

5. The safety clamp triggering device according to claim 4, It is characterized in that The safety clamp triggering device also includes a switch bracket, a limit switch and a limit contact. The switch bracket is installed on the bracket beam, the limit switch is installed on the switch bracket, and the limit contact is installed on the rotating bracket and arranged in alignment with the limit switch.

6. The safety clamp triggering device according to claim 3, It is characterized in that The safety clamp triggering device also includes a limiting assembly, which is arranged on the upper crossbeam assembly and located above one end of the rotating bracket.

7. The safety clamp triggering device according to claim 2, It is characterized in that The spring assembly includes a linkage arm, a spring seat, a spring rod, an actuating spring and a positioning assembly. The spring seat is mounted on the upper cross beam assembly, the spring rod is slidably inserted into the spring seat, one end of the linkage arm is fixedly connected to the main shaft, the other end of the linkage arm is rotatably connected to one end of the spring rod, the actuating spring is sleeved on the spring rod, the positioning assembly is screwed on the spring rod, and two ends of the actuating spring respectively abut against the spring seat and the positioning assembly.

8. The safety clamp triggering device according to any one of claims 1 to 7, It is characterized in that The power assembly includes a mounting plate, a base plate, a worm, a worm wheel, a support unit and a driving unit. The base plate is assembled with the upper beam assembly via the mounting plate. The support unit is mounted on the base plate. The worm is rotatably disposed on the support unit and connected to the driving unit. The driving unit is connected to the support unit. The worm wheel is rotatably connected to the rotating shaft assembly and meshes with the worm. The electromagnet assembly is mounted on the end face of the worm wheel.

9. The safety clamp triggering device according to claim 8, It is characterized in that The support unit includes a first bearing seat, a second bearing seat and a motor bracket, the first bearing seat, the second bearing seat and the motor bracket are arranged at intervals along the same axial direction, the opposite ends of the worm are rotatably connected to the first bearing seat and the second bearing seat respectively, the driving unit includes a coupling and a driving motor, the driving motor is installed on the side of the motor bracket away from the second bearing seat, the coupling is arranged between the second bearing seat and the motor bracket, and connects the worm to the driving motor.

10. An elevator, It is characterized in that The invention comprises a safety clamp triggering device as claimed in any one of claims 1 to 9.

Images