Electronic safety clamps
By using a drive mechanism and a generator to drive the wedge block to cooperate with the locking component, the problems of slow response speed and power failure of traditional safety clamps are solved, and fast and reliable elevator braking is achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- BEIJING SUNWA ELEVATOR
- Filing Date
- 2025-07-01
- Publication Date
- 2026-06-26
AI Technical Summary
Traditional safety clamps have a slow response time and cannot effectively brake in the event of a power failure. They also have a complex mechanical structure and are prone to damage when connected to external power supplies.
The system employs a combination of a drive mechanism, a generator, a wedge, and a locking mechanism. When the car loses control, the generator provides power to drive the locking mechanism, which is slidably connected to the guide rail, to achieve rapid clamping and braking.
It achieves fast and reliable braking, avoids braking failure caused by power supply failure, and simplifies the wiring structure.
Smart Images
Figure CN224411156U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of elevator safety equipment technology, and in particular to an electronic safety clamp. Background Technology
[0002] The safety brake is a crucial safety component of elevator equipment, playing a vital role in ensuring safety in the event of elevator overspeed or loss of control. The safety brake mechanism typically operates by the governor engaging, causing the rope clamps to grip the governor rope. As the car descends, the governor rope pulls the safety brake linkage mechanism, activating the safety brake's linkage and engaging the safety brake braking element, bringing the safety brakes on both sides of the guide rail into contact with the rail, thus simultaneously clamping the car to a stop.
[0003] Meanwhile, most traditional safety clamps rely on purely mechanical structures or require external power for auxiliary control. Purely mechanical safety clamps have certain limitations in response speed and accuracy, while safety clamps that rely on external power supplies face problems such as power failure, complex wiring that is easily damaged and cannot brake. Utility Model Content
[0004] The purpose of this invention is to provide an electronic safety clamp that solves the technical problems of slow response speed and inability to brake in the prior art.
[0005] To solve the above-mentioned technical problems, this utility model provides a driving mechanism, a power generation component, a wedge block, and a locking component;
[0006] The output end of the drive mechanism is connected to the wedge block, the wedge block is disposed inside the locking member, the wedge block is slidably connected to the locking member, a guide rail is provided on one side of the wedge block, the guide rail is fixed to the wall of the elevator shaft, the locking member is connected to the car, and the locking member is slidably connected to the guide rail;
[0007] The drive mechanism drives the wedge block to move, so that the wedge block is pressed against the guide rail with the cooperation of the locking member;
[0008] The power generator is installed inside the wall of the elevator shaft. The power generator is connected to the car via a transmission and is also connected to the drive mechanism via an electrical signal. The car drives the power generator to move, thereby supplying power to the drive mechanism.
[0009] In an optional embodiment, the wedge has an inclined surface on the side facing away from the guide rail, and the wedge moves closer to or away from the guide rail through the cooperation of the inclined surface and the locking member.
[0010] In an optional embodiment, the locking member is provided with a guide surface, which is parallel to the inclined surface and is slidably disposed with respect to the inclined surface.
[0011] In an optional embodiment, two guide surfaces and two wedges are provided, with the two wedges and two guide surfaces respectively arranged symmetrically along the guide rail.
[0012] In an optional embodiment, both the guide surface and the wedge are disposed on the side of the locking member closest to the ground.
[0013] In an optional embodiment, the drive mechanism includes a spring and a push rod, one end of the spring being connected to the car and the other end of the spring being connected to the push rod, the end of the push rod facing away from the spring being connected to the wedge, and the spring having a tendency to push the wedge to press against the guide rail via the push rod.
[0014] In an optional implementation, an electromagnet and a baffle are also included;
[0015] The electromagnet is arranged perpendicular to the axis of the spring, and the baffle is arranged on the side of the electromagnet close to the spring. The end face of the baffle abuts against the spring. The electromagnet is used to drive the baffle to move closer to the electromagnet, so that the spring is released.
[0016] In an optional embodiment, the electromagnet is hollow inside, and an iron core is provided at one end of the baffle. The iron core is connected to the baffle and is inserted into the electromagnet.
[0017] In an optional embodiment, a retaining ring is provided at one end of the spring near the wedge block, the retaining ring is connected to the top rod, and the retaining ring abuts against the baffle.
[0018] In an optional embodiment, the locking member is provided with a plurality of fixing holes, which are provided through the locking member and are connected to the car by bolts.
[0019] This utility model provides an electronic safety clamp, comprising a drive mechanism, a generator, a wedge, and a locking component. The output end of the drive mechanism is connected to the wedge, which is disposed within the locking component and slidably connected to it. A guide rail is provided on one side of the wedge, which is fixed to the elevator shaft wall. The locking component is connected to the car and slidably connected to the guide rail. The drive mechanism drives the wedge to move, pressing it against the guide rail with the cooperation of the locking component. The generator is disposed within the elevator shaft wall and is connected to the car drive mechanism via a transmission connection. The generator is also electrically connected to the drive mechanism, causing the car to move and supply power to the drive mechanism. By generating power from the generator to the drive mechanism, power can be supplied when the car is out of control. After receiving power, the drive mechanism drives the wedge to move, and the wedge, in cooperation with the locking component, clamps onto the guide rail, thereby locking the car onto the guide rail. This solves the technical problems of slow response speed and inability to brake in the prior art, achieving faster braking response and more reliable braking. Attached Figure Description
[0020] Figure 1 This is a schematic diagram of the electronic safety clamp mentioned in the embodiments of this utility model;
[0021] Figure 2 for Figure 1 A partial structural diagram.
[0022] In the diagram, 1-drive mechanism; 101-spring; 102-top rod; 103-electromagnet; 104-baffle; 105-iron core; 2-wedge block; 3-locking component; 4-guide rail; 5-retaining ring; 6-fixing hole. Detailed Implementation
[0023] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit the scope of this utility model.
[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0025] In related technologies, traditional safety clamps mostly rely on purely mechanical structures or require external power supply for auxiliary control. Safety clamps with purely mechanical structures have certain limitations in response speed and accuracy, while safety clamps that rely on external power supply face problems such as power failure, complex wiring that is easily damaged and cannot brake.
[0026] In view of this, such as Figure 1 and Figure 2 As shown, some embodiments of this utility model provide a drive mechanism 1, a generator, a wedge 2, and a locking member 3; the output end of the drive mechanism 1 is connected to the wedge 2, the wedge 2 is disposed inside the locking member 3, the wedge 2 and the locking member 3 are slidably connected, a guide rail 4 is provided on one side of the wedge 2, the guide rail 4 is fixed to the wall of the elevator shaft, the locking member 3 is connected to the car, and the locking member 3 and the guide rail 4 are slidably connected; the drive mechanism 1 drives the wedge 2 to move, so that the wedge 2 is pressed against the guide rail 4 with the cooperation of the locking member 3; the generator is disposed inside the wall of the elevator shaft, the generator is connected to the car transmission, the generator is connected to the drive mechanism 1 by electrical signal, the car drives the generator to move, so that the generator supplies power to the drive mechanism 1.
[0027] In the above embodiment, the power generation component can be a generator, which can be fixed to the wall of the elevator shaft. The top of the car can be connected to the guide wheel at the top of the elevator shaft via a steel cable. The guide wheel can be connected to the generator, so that the rotation of the guide wheel drives the power generation component to generate electricity. The guide rail 4 can be made of metal and can extend along the length of the elevator shaft. The guide rail 4 is fixed to the wall of the elevator shaft by expansion bolts, and the side wall of the car can be engaged with the guide rail 4, so that the car and the guide rail 4 can be slidably connected. When the car falls freely out of control, the speed of the car is greater than the normal operating speed. Therefore, the current generated by the power generation component is larger, and the larger current can control the movement of the drive mechanism 1. The drive mechanism 1 can drive the wedge block 2 to move, so that the wedge block 2 and the locking part 3 are engaged and locked on the guide rail 4, thereby fixing the car and the guide rail 4, fixing the car and preventing the car from falling freely and causing injury.
[0028] Some embodiments of this utility model provide an electronic safety clamp, including a drive mechanism 1, a generator, a wedge 2, and a locking member 3; the output end of the drive mechanism 1 is connected to the wedge 2, the wedge 2 is disposed inside the locking member 3, the wedge 2 and the locking member 3 are slidably connected, a guide rail 4 is provided on one side of the wedge 2, the guide rail 4 is fixed to the wall of the elevator shaft, the locking member 3 is connected to the car, and the locking member 3 and the guide rail 4 are slidably connected; the drive mechanism 1 drives the wedge 2 to move, so that the wedge 2 is pressed against the guide rail 4 with the cooperation of the locking member 3; the generator is disposed inside the wall of the elevator shaft, the generator is connected to the car for transmission, the generator is connected to the drive mechanism 1 for electrical signal, the car drives the generator to move, so that the generator supplies power to the drive mechanism 1. Power is supplied to the drive mechanism 1 by the generator, which can provide power when the car is out of control. After the drive mechanism 1 is powered, it drives the wedge block 2 to move. The wedge block 2 and the locking member 3 cooperate to clamp the wedge block 2 onto the guide rail 4, thereby locking the car onto the guide rail 4. This solves the technical problems of slow response speed and inability to brake in the prior art, and achieves the technical effect of fast braking response speed and reliable braking.
[0029] In an optional embodiment, the wedge 2 has an inclined surface on the side away from the guide rail 4, and the wedge 2 moves closer to or away from the guide rail 4 through the cooperation of the inclined surface and the locking member 3.
[0030] In the above embodiment, the wedge 2 is provided with an inclined surface on the side away from the guide rail 4. The distance between the inclined surface and the guide rail 4 increases along the direction of free fall of the car. So when the car is free fall with the locking member 3, the locking member 3 can press the wedge 2 onto the guide rail 4 under the action of the inclined surface, thereby fixing the car.
[0031] In an optional embodiment, the locking member 3 is provided with a guide surface, which is parallel to the inclined surface and is slidably disposed with respect to the inclined surface.
[0032] In the above embodiment, the locking member 3 is provided with a guide surface on the side near the guide rail 4. The guide surface can be flat and can be arranged parallel to the inclined surface. When the car is free-falling with the locking member 3, the guide surface can abut against the inclined surface on the wedge 2. Then, the inclined surface can slide relative to the guide surface, so that the wedge 2 can approach and press against the guide rail 4, making the movement of the wedge 2 smoother.
[0033] In an optional embodiment, two guide surfaces and two wedges 2 are provided, with the two wedges 2 and the two guide surfaces symmetrically arranged along the guide rail 4.
[0034] In the above embodiment, the two guide surfaces and the two wedges 2 are symmetrically arranged along the length of the guide rail 4. The two guide surfaces are arranged at an angle. Each wedge 2 is provided with a driving mechanism 1 below it, so that each wedge 2 can be engaged with the locking member 3 when the car is in a stall state, thereby fixing the car and the guide rail 4, and thus fixing the guide rail 4.
[0035] Furthermore, multiple locking components 3, wedges 2, and drive mechanisms 1 can be installed at the corners of the car. All drive mechanisms 1 are connected to the power generation components via electrical signals. Multiple locking components 3 can be installed on the same plane. That is, multiple locking components 3 can be installed at different corners at the upper end of the car, or at different corners at the lower end of the car, or at the corners at the upper and lower ends of the car respectively.
[0036] In an optional embodiment, both the guide surface and the wedge 2 are located on the side of the locking member 3 closest to the ground.
[0037] In the above embodiment, in order to facilitate the locking of the car during free fall, the inclined surface of the side wall of the wedge block 2 can be inclined along the direction of free fall of the car, and the guide surface is close to and in contact with the inclined surface on the wedge block 2, so that the guide surface is also set close to the ground. When the locking member 3 falls freely with the car, the locking member 3 presses the wedge block 2 onto the guide rail 4 through the guide member, thereby stopping the car.
[0038] In an optional embodiment, the drive mechanism 1 includes a spring 101 and a push rod 102. One end of the spring 101 is connected to the car, and the other end of the spring 101 is connected to the push rod 102. The end of the push rod 102 away from the spring 101 is connected to the wedge block 2. The spring 101 has a tendency to push the wedge block 2 to press against the guide rail 4 through the push rod 102.
[0039] In the above embodiment, the spring 101 can be cylindrical. One end of the spring 101 is fixed to the car, and the other end can be connected to the push rod 102. The axis of the spring 101 can be set to coincide with the axis of the push rod 102. The end of the push rod 102 away from the spring 101 can be connected to the wedge 2, so that the spring 101 can drive the wedge 2 to move through the push rod 102. When the car loses control and falls freely, the speed of the car exceeds the normal operating speed, which can cause the generator to generate electricity and transmit it to the drive mechanism 1 through the cable. At this time, the spring 101 is released, and the spring 101 pushes the wedge 2 to move through the push rod 102, thereby completing the deceleration of the car until it stops.
[0040] In an optional embodiment, an electromagnet 103 and a baffle 104 are also included. The electromagnet 103 is arranged perpendicular to the axis of the spring 101, and the baffle 104 is arranged on the side of the electromagnet 103 close to the spring 101. The end face of the baffle 104 abuts against the spring 101. The electromagnet 103 is used to drive the baffle 104 to approach the electromagnet 103, so that the spring 101 is released.
[0041] In the above embodiment, the electromagnet 103 is electrically connected to the generator. One end of the electromagnet 103 faces the baffle 104, which can be made of metal so that when the electromagnet 103 is energized, it can drive the baffle 104 to move closer to the electromagnet 103. The end face of the electromagnet 103 abuts against the end of the spring 101 near the wedge 2, so that the baffle 104 can limit the extension of the spring 101. When the electromagnet 103 is energized, it can attract the baffle 104 away, so that the end face of the spring 101 is released after the baffle 104 moves. Thus, the spring 101 can drive the wedge 2 to move through the push rod 102, so that the car is stopped.
[0042] In an optional embodiment, the electromagnet 103 is hollow inside, and an iron core 105 is provided at one end of the baffle 104. The iron core 105 is connected to the baffle 104 and is inserted into the electromagnet 103.
[0043] In the above embodiment, the electromagnet 103 can be cylindrical and hollow inside. An iron core 105 is fixedly connected to the side of the baffle 104 near the electromagnet 103. The iron core 105 can be cylindrical and can extend into the interior of the electromagnet 103. This allows the electromagnet 103 to attract the baffle 104, and the baffle 104 can be fixed by the hollow position inside the electromagnet 103 and the iron core 105, thus preventing the baffle 104 from falling off.
[0044] In an optional embodiment, a retaining ring 5 is provided at one end of the spring 101 near the wedge block 2. The retaining ring 5 is connected to the top rod 102 and abuts against the baffle 104.
[0045] In the above embodiments, the retaining ring 5 can be made of metal, the retaining ring 5 can be fixed on the spring 101, the retaining ring 5 can be fixedly connected to the push rod 102, and when the spring 101 is compressed, the baffle 104 can abut against the retaining ring 5, thereby making the spring 101 more stable and the output direction of the spring 101 more accurate.
[0046] In an optional embodiment, the locking member 3 is provided with a fixing hole 6, and there are multiple fixing holes 6. The multiple fixing holes 6 are provided through the locking member 3, and the fixing holes 6 are connected to the car by bolts.
[0047] In the above embodiment, the locking member 3 may be provided with four fixing holes 6, all of which may be circular. The fixing holes 6 may be located near the guide rail 4 in the car, and the four fixing holes 6 are respectively located on both sides of the guide rail 4. Each fixing hole 6 is fixed to the side wall of the car by a bolt, thereby making the locking member 3 and the car firmly connected.
[0048] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. An electronic safety clamp, characterized in that, Includes drive mechanism, generator, wedge, and locking mechanism; The output end of the drive mechanism is connected to the wedge block, the wedge block is disposed inside the locking member, the wedge block is slidably connected to the locking member, a guide rail is provided on one side of the wedge block, the guide rail is fixed to the wall of the elevator shaft, the locking member is connected to the car, and the locking member is slidably connected to the guide rail; The drive mechanism drives the wedge block to move, so that the wedge block is pressed against the guide rail with the cooperation of the locking member; The power generator is installed inside the wall of the elevator shaft. The power generator is connected to the car via a transmission and is also connected to the drive mechanism via an electrical signal. The car drives the power generator to move, thereby supplying power to the drive mechanism.
2. The electronic safety clutch of claim 1, wherein, The wedge has an inclined surface on the side away from the guide rail. The wedge moves closer to or away from the guide rail through the cooperation of the inclined surface and the locking member.
3. The electronic safety clutch of claim 2, wherein, The locking member is provided with a guide surface, which is parallel to the inclined surface and is slidably disposed with respect to the inclined surface.
4. The electronic safety clutch of claim 3, wherein, Two guide surfaces and two wedges are provided, and the two wedges and two guide surfaces are respectively arranged symmetrically along the guide rail.
5. The electronic safety clutch of claim 3 wherein, Both the guide surface and the wedge are located on the side of the locking member closest to the ground.
6. The electronic safety clutch of claim 1, wherein, The drive mechanism includes a spring and a push rod. One end of the spring is connected to the car, and the other end of the spring is connected to the push rod. The end of the push rod opposite to the spring is connected to the wedge block. The spring has a tendency to push the wedge block to press against the guide rail through the push rod.
7. The electronic safety clutch of claim 6, wherein, It also includes electromagnets and baffles; The electromagnet is arranged perpendicular to the axis of the spring, and the baffle is arranged on the side of the electromagnet close to the spring. The electromagnet is electrically connected to the power generation device, and the end face of the baffle abuts against the spring. The electromagnet is used to drive the baffle to move closer to the electromagnet, so that the spring is released.
8. The electronic safety clutch of claim 7, wherein, The electromagnet is hollow inside, and an iron core is provided at one end of the baffle. The iron core is connected to the baffle and is inserted into the electromagnet.
9. The electronic safety clutch of claim 8, wherein, A retaining ring is provided at one end of the spring near the wedge block. The retaining ring is connected to the top rod and abuts against the baffle.
10. The electronic safety clutch according to any one of claims 1-9, wherein, The locking component is provided with multiple fixing holes, which penetrate the locking component and are connected to the car by bolts.