Auxiliary resetting device for ascending safety tongs
By installing an auxiliary reset device for upstream safety clamps on the top of the elevator car, the synergistic effect of the rotating arm, lifting arm, lifting spring and linear motor, the problem of the lack of auxiliary reset device for upstream safety clamps is solved, automatic reset is achieved, and the safety and operation efficiency of the elevator are improved.
Patent Information
- Application Number
- CN202422384802.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-29
- Publication Date
- 2025-06-24
- Estimated Expiration
- 2034-09-29
AI Technical Summary
In existing elevator equipment, the uplink safety clamp lacks auxiliary reset devices, resulting in manual assistance in resetting, which affects safe use and operating efficiency.
An uplink safety clamp assisted reset device is designed, including a base installed on the top of the elevator car, a rotating arm, a lifting arm, a lifting spring and a linear motor. Through the synergy of these components, the automatic reset of the uplink safety clamp is achieved.
Through this auxiliary reset device, the reset of the uplink safety clamp can be effectively assisted, the operation process is simplified, and the safety and operation efficiency of the elevator are improved.
Smart Images
Figure CN223016181U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of elevator equipment, in particular to an auxiliary resetting device for an upward safety clamp. Background Art
[0002] With the development of elevator equipment and safety needs, many elevators are equipped with two-way safety clamps, that is, two progressive safety clamps connected by screws and symmetrically installed at the upper and lower ends of one side of the car, which are composed of an upward safety clamp and a downward safety clamp. For the reset of the two-way safety clamp, the elevator car needs to be moved in the opposite direction. The deadweight direction of the wedge block of the downward safety clamp is the same as its reset direction. Therefore, when the elevator car is lifted in the reverse direction, the wedge block can fall back under its deadweight to achieve automatic reset. The deadweight of the wedge block of the upward safety clamp is opposite to its reset direction. It cannot rely on its deadweight to achieve automatic reset. Instead, it needs to be manually assisted to lift the wedge block to reset it, which affects the safe use and operation efficiency of the elevator. Utility Model Content
[0003] In view of the above-mentioned deficiencies in the prior art, the purpose of the utility model is to provide an auxiliary resetting device for an upward safety clamp, so as to solve the problem that the upward safety clamp in the prior art lacks an auxiliary resetting device.
[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is as follows: an upward safety clamp auxiliary resetting device, comprising a base installed on the top of the elevator car, a rotating arm is provided on the base, one end of the rotating arm is hinged to the base so that the rotating arm can rotate in a plane perpendicular to the top surface of the elevator car, and the other end extends to the outside of the car and is connected to a lifting arm, the lifting arm is hinged to the rotating arm so that it can rotate within a preset angle range within the rotation plane of the rotating arm, and is used to be connected to the lifting crank arm of the upward safety clamp installed on the upper part of the elevator car; a jacking assembly is also provided on the base, and a jacking spring is provided between the jacking assembly and the lifting arm, the jacking spring is inclined, and its lower end is connected to the jacking assembly, and the upper end of the jacking spring is connected to the lifting arm, and the jacking spring can move and / or deform under the action of the jacking assembly, and drive the lifting arm to rotate and / or move.
[0005] As an optimization, the lifting assembly includes a linear motor having a telescopic rod, and the end of the telescopic rod is connected to the lifting spring.
[0006] As an optimization, it also includes a car top inspection box, in which a control switch is installed, and the linear motor is connected in series with the control switch.
[0007] As an optimization, an upper bracket crossbeam is provided on the top of the elevator car, and the base is fixedly mounted on the upper bracket crossbeam.
[0008] As an optimization, the lifting arm includes a bottom plate. One end of the bottom plate in the length direction is hinged to the rotating arm, and the other end is provided with a hook for connecting to the lifting crank arm of the upward safety tongs. One side of the bottom plate in its width direction is bent towards the jacking spring to form a connecting plate, and a plurality of connecting holes are opened in the connecting plate along the length direction of the bottom plate, and the jacking spring is connected to one of the connecting holes.
[0009] Compared with the prior art, the utility model has the following advantages: By installing the auxiliary reset device on the top of the elevator car, when the upward safety tongs act, its movable wedge block drives the lifting crank arm to rotate downward, thereby pulling the lifting arm and the rotating arm to move, so that the jacking spring is compressed; When reset is needed, the telescopic rod is driven to extend by the jacking assembly, and the jacking spring is further compressed to push the lifting arm and the rotating arm to rotate in the reverse direction, thereby lifting the lifting crank arm of the upward safety tongs, and further lifting the movable wedge block to assist in resetting the upward safety tongs. The utility model has a simple structure and is convenient to use, and plays a very good auxiliary role in resetting the safety tongs. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] Figure 1 is a schematic structural diagram of the utility model;
[0011] In the figure: 1 base, 2 rotating arm, 3 lifting arm, 4 jacking spring, 5 linear motor, 6 telescopic rod, 7 lifting ring, 8 connecting plate. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0012] The present utility model will be further described below in conjunction with the drawings and embodiments.
[0013] In order to make the purpose, technical solution and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of the embodiments. Therefore, the detailed description of the embodiments of the present utility model provided in the drawings is not intended to limit the scope of the present utility model to be protected, but merely represents the selected embodiments of the present utility model. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model.
[0014] It should be noted that like reference numerals and letters denote like items in the following figures. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the figures, or the orientation or positional relationship in which the inventive product is customarily placed during use. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation on the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive distinction and should not be construed as indicating or implying relative importance. In addition, terms such as "horizontal" and "vertical" do not mean that the components are required to be absolutely horizontal or hanging, but may be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but may be slightly inclined. In the description of the present invention, it should also be noted that unless otherwise clearly specified and defined, the terms "set", "installed", "connected", "connected" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0015] Example: Refer to Figure 1, an auxiliary resetting device for an upward safety clamp comprises a base 1 installed on the top of an elevator car. Specifically, an upper bracket crossbeam is provided on the top of the elevator car, and the base 1 is fixedly installed on the upper bracket crossbeam. A rotating arm 2 is provided on the side of the base 1 facing away from the elevator car, and a lifting assembly is provided on the side close to the elevator car; wherein, the rotating arm 2 is roughly L-shaped, one end of which is hinged to the base 1 so that the rotating arm 2 can rotate in a plane perpendicular to the top surface of the elevator car, and the other end is provided with a lifting arm 3, and the lifting arm 3 is hinged to the rotating arm 2 so that it can rotate within a preset angle range within the rotation plane of the rotating arm 2, and is used to connect with the lifting crank arm of the upward safety clamp installed on the upper part of the elevator car; a lifting spring 4 is provided between the lifting assembly and the lifting arm 3, and one end of the lifting spring 4 is connected to the lifting arm 3. The lifting assembly is connected, and this end can move along the axis of the lifting spring 4 under the action of the lifting assembly, and the other end of the lifting spring 4 is connected to the lifting arm 3, and in the initial state, the lifting spring 4 is in a pre-compressed state and is tilted so that the distance between the end close to the lifting arm 3 and the top surface of the elevator car is greater than the distance between the end close to the lifting assembly and the top surface of the elevator car, so as to ensure that when the lifting assembly pushes the lifting spring 4, the thrust applied by the lifting spring 4 to the lifting arm 3 is obliquely upward, so as to generate an upward thrust on the lifting crank arm of the upward safety clamp, thereby assisting the safety clamp to reset. Among them, the lifting spring 4 adopts a high-pressure coil spring, which has a high bending resistance and a large elastic coefficient, so that it has good bending resistance and retractable characteristics, so as to ensure that during the rotation and reset of the rotating arm 2, the lifting spring 4 only produces axial tensile and compressive deformation without bending.
[0016] Specifically, the lifting assembly includes a linear motor 5 installed on the side of the base 1 close to the elevator car, the linear motor 5 has a telescopic rod 6 that can be extended and retracted in the horizontal direction or the axial direction of the lifting spring 4, and the end of the telescopic rod 6 connected to the lifting spring 4 is provided with a lifting ring 7, and the lifting spring 4 is connected to the lifting ring 7. It also includes a car top inspection box, in which a control switch is installed, and the linear motor 5 is connected in series with the control switch through a control line.
[0017] The lifting arm 3 includes a base plate, one end of which along the length direction is hinged to the rotating arm 2, and the other end is provided with a hook for connecting with the lifting crank arm of the upward safety clamp; the base plate is bent along one side of its width direction toward the direction close to the jacking spring 4 to form a connecting plate 8, and a plurality of connecting holes are opened on the connecting plate 8 along the length direction of the base plate, and the jacking spring 4 is connected to one of the connecting holes to adjust the initial clamping force or compression amount of the jacking spring 4.
[0018] When in use, when the elevator car operates abnormally, the upward safety clamp is activated. At this time, its movable wedge moves downward vertically, and the two movable wedges approach each other to clamp the pulling wire rope of the elevator car to achieve emergency braking of the elevator car. At the same time, the downward movement of the movable wedge will pull the lifting crank arm fixedly connected to it to move downward. Since the hook of the lifting arm 3 is hooked on the lifting crank arm, the downward movement of the lifting crank arm will pull the lifting arm 3 connected to it to move downward, thereby driving the rotating arm 2 to rotate downward. At this time, since the hook on the lifting arm 3 is connected to the lifting crank arm The pulling crank arm is basically in the same vertical position, and the lifting crank arm basically does not move in the horizontal direction, so the hook end of the lifting arm 3 can only move vertically. Therefore, the hinge connection between the lifting arm 3 and the rotating arm 2 and the hanging connection between the lifting arm 3 and the lifting crank arm through the hook enable the lifting arm 3 to rotate within a certain angle range, thereby improving the adaptability of the position between the lifting arm 3 and the lifting crank arm when the rotating arm 2 rotates. How to specifically achieve the limit at the hinge between the lifting arm 3 and the rotating arm 2 belongs to the existing technology, and many structures can achieve it, which will not be described in detail. When the lifting arm 3 moves downward, the distance between the lifting arm 3 and the lifting assembly is reduced, thereby compressing the lifting spring 4. However, at this time, the spring force of the lifting spring 4 is not enough to overcome the reset resistance of the movable wedge, so it cannot be automatically reset. Therefore, it is necessary to start the linear motor 5 to rotate through the control switch to drive the telescopic rod 6 to extend. The telescopic rod 6 further compresses the lifting spring 4 to increase its reset force. Since the lifting crank arm and the hook end of the lifting arm 3 can only move vertically and cannot move horizontally, the thrust of the lifting spring 4 prompts the lifting arm 3 to drive the lifting crank arm to overcome the reset resistance of the movable wedge, so that the lifting arm 3 drives the lifting crank arm to move and drive the movable wedge to reset. After the movable wedge is reset, the linear motor 5 is reversed by the control switch to reset the telescopic rod 6, and finally an auxiliary reset process is completed.
[0019] The utility model installs the auxiliary reset device on the top of the elevator car. When the upward safety clamp is activated, its movable wedge drives the lifting crank arm to rotate downward, thereby pulling the lifting arm and the rotating arm to move, so that the lifting spring is compressed; when it needs to be reset, the lifting assembly drives the telescopic rod to extend, pushing the lifting spring to further compress and push the lifting arm and the rotating arm to rotate in the opposite direction, thereby lifting the lifting crank arm of the upward safety clamp, and then lifting the movable wedge to assist the upward safety clamp in resetting. The utility model has a simple structure and is easy to use, and plays a good auxiliary role in resetting the safety clamp.
[0020] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit the technical solution. Ordinary technicians in this field should understand that those modifications or equivalent replacements of the technical solution of the utility model without departing from the purpose and scope of the technical solution of the utility model should be included in the scope of the claims of the utility model.
Claims
1. An auxiliary reset device for an upward safety clamp, characterized in that: It comprises a base installed on the top of the elevator car, a rotating arm is provided on the base, one end of the rotating arm is hinged to the base so that the rotating arm can rotate in a plane perpendicular to the top surface of the elevator car, the other end extends to the outside of the car and is connected to a lifting arm, the lifting arm is hinged to the rotating arm so that it can rotate within a preset angle range in the rotating plane of the rotating arm, and is used to be connected to the lifting crank arm of the upward safety clamp installed on the upper part of the elevator car; a jacking assembly is also provided on the base, a jacking spring is provided between the jacking assembly and the lifting arm, the jacking spring is arranged obliquely, the lower end of the jacking spring is connected to the jacking assembly, the upper end of the jacking spring is connected to the lifting arm, the jacking spring can move and / or deform under the action of the jacking assembly, and drive the lifting arm to rotate and / or move.
2. The auxiliary reset device for upward safety gear according to claim 1, characterized in that: The lifting assembly comprises a linear motor having a telescopic rod, and the end of the telescopic rod is connected to the lifting spring.
3. The auxiliary reset device for upward safety gear according to claim 2, characterized in that: It also includes a car top inspection box, in which a control switch is installed, and the linear motor is connected in series with the control switch.
4. The auxiliary reset device for upward safety gear according to claim 1, characterized in that: An upper bracket crossbeam is arranged on the top of the elevator car, and the base is fixedly installed on the upper bracket crossbeam.
5. The auxiliary reset device for upward safety gear according to claim 1, characterized in that: The lifting arm includes a base plate, one end of which along the length direction is hinged to the rotating arm, and the other end is provided with a hook for connecting with the lifting crank arm of the upward safety clamp; the base plate is bent along one side of its width direction in the direction of the jacking spring to form a connecting plate, and a plurality of connecting holes are opened on the connecting plate along the length direction of the base plate, and the jacking spring is connected to one of the connecting holes.