A new type of electronic speed governor and elevator

Abstract

The present invention relates to a novel electronic speed governor and an elevator. The novel electronic speed governor comprises a base frame and a wheel axle mounted on the base frame, an electrical trigger, a linkage mechanism, a first pawl and a second pawl, wherein the first pawl and the second pawl are respectively located on either side of a ratchet wheel and are hinged to the base frame; the first pawl, the second pawl and the linkage mechanism are respectively located on either side of the base frame; the linkage mechanism comprises a first pull rod and a second pull rod, one end of the first pull rod is hinged to one end of the second pull rod, the other end of the first pull rod is hinged to the first pawl via a first hinge, and the other end of the second pull rod is hinged to the second pawl via a second hinge; the electrical trigger is driven and connected to the first pull rod or the second pull rod; when the electrical trigger is actuated, the first pull rod or the second pull rod is driven to link the first pawl and the second pawl to move to engage with the ratchet wheel for braking. The improvement of the linkage mechanism of the present invention shortens the triggering stroke of the electrical trigger and improves the working stability of the electrical trigger.

Description

Technical Field

[0001] The present invention belongs to the technical field of elevator components, and in particular relates to a novel electronic speed governor and an elevator. Background Art

[0002] At present, mechanical speed limiters are widely used in the market, but they have the following disadvantages: first, the action speed is not accurate, and it only acts within a certain speed range, and there is a hidden danger that it cannot be triggered at low speeds; second, the action speed is prone to change over time and needs to be inspected regularly, otherwise it may not act reliably; third, there is a certain lag in mechanical triggering.

[0003] Based on this, an electronic speed limiter has been developed in previous research, such as the one disclosed in the patent document with publication number CN216302983U. This electronic speed limiter has high requirements for the electromagnet, that is, it needs to have a large stroke. In order to ensure the working stability of the electromagnet, use a small electromagnet, and the working stability of the speed limiter, it is necessary to further improve the structure of the speed limiter. Summary of the Invention

[0004] In view of the above-mentioned shortcomings and deficiencies in the prior art, one of the objects of the present invention is to at least solve one or more of the above-mentioned problems in the prior art. In other words, one of the objects of the present invention is to provide a new electronic speed governor and elevator that meet one or more of the above-mentioned needs.

[0005] In order to achieve the above-mentioned object of the invention, the present invention adopts the following technical solutions:

[0006] A novel electronic speed governor comprises a base frame, an axle mounted on the base frame, an electrical trigger, a linkage mechanism, a first pawl, and a second pawl. The axle is rotatably coupled to the base frame, and the axle, pulley, and ratchet are coaxially mounted and rotate synchronously. The first pawl and the second pawl are respectively located on either side of the ratchet and are hinged to the base frame. The first pawl, the second pawl, and the linkage mechanism are respectively located on either side of the base frame.

[0007] The linkage mechanism includes a first pull rod and a second pull rod, one end of the first pull rod is hinged to one end of the second pull rod, the other end of the first pull rod is hinged to the first pawl via a first hinge, and the other end of the second pull rod is hinged to the second pawl via a second hinge; accordingly, the base frame has movable avoidance guide grooves corresponding to the first hinge and the second hinge respectively;

[0008] The electrical trigger is drivingly connected to the first pull rod or the second pull rod;

[0009] When the electrical trigger is actuated, the first pull rod or the second pull rod is driven to move the first pawl and the second pawl to engage with the ratchet wheel for braking.

[0010] As a preferred solution, the electrical triggering member includes an electromagnet and a pin shaft, the telescopic end of the iron core of the electromagnet is vertically connected to the pin shaft, and the pin shaft passes through the first pull rod or the second pull rod and cooperates with each other.

[0011] As a preferred solution, the first pull rod or the second pull rod has a movable avoidance waist-shaped hole that cooperates with the pin shaft.

[0012] As a preferred solution, the base frame has a guide groove, and the pin shaft is plugged into the guide groove to guide the movement of the pin shaft.

[0013] As a preferred solution, the rope pulley includes a concentrically rotating synchronous rope pulley, a first pressure plate and a second pressure plate, the first pressure plate and the second pressure plate are respectively arranged on both sides of the synchronous rope pulley and in contact with the inner circular surface of the synchronous rope pulley, and the parts where the first pressure plate and the second pressure plate contact the synchronous rope pulley are both provided with friction plates; wherein, the first pressure plate and the second pressure plate are fixedly connected.

[0014] As a preferred solution, the ratchet is arranged adjacent to the second pressing plate, and the ratchet is fixedly connected to the first pressing plate.

[0015] As a preferred solution, the base frame is provided with a bearing seat corresponding to the wheel axle, and the wheel axle is coaxially mounted on the bearing seat through a bearing and passes through the base frame.

[0016] As a preferred solution, magnets are respectively provided at both ends of the wheel axle, and the base frame is provided with encoders corresponding one-to-one to the magnets.

[0017] As a preferred solution, the base frame is an L-shaped plate structure, wherein one encoder is arranged on the base frame, and the other encoder is arranged on the base frame through a suspended bracket.

[0018] The present invention also provides an elevator, which adopts the new electronic speed governor as described in any of the above solutions.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] (1) The improvement of the linkage mechanism of the present invention makes the trigger stroke of the electrical trigger shorter, which is conducive to improving the working stability of the electrical trigger and making it more miniaturized;

[0021] (2) The present invention adopts the braking cooperation between the ratchet and the pawl, and cooperates with the friction braking of the rope pulley to further improve the working stability of the speed governor;

[0022] (3) The base frame of the present invention is an L-shaped plate structure and an assembly of the overall structure, and the structure is more miniaturized. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 1 is a schematic structural diagram of a novel electronic speed governor according to embodiment 1 of the present invention;

[0024] Figure 2 1 is a schematic structural diagram of a base frame according to embodiment 1 of the present invention;

[0025] Figure 3 Schematic diagram of the structure of the new electronic speed governor of Example 1 of the present invention (the outer cover and electrical cabinet are omitted);

[0026] Figure 4 yes Figure 3 AA section view in the figure;

[0027] Figure 5 1 is a schematic structural diagram of the linkage mechanism of Example 1 of the present invention;

[0028] Figure 6 2 is a schematic structural diagram of the linkage mechanism and the pawl of the electronic speed governor according to embodiment 1 of the present invention. DETAILED DESCRIPTION

[0029] To more clearly illustrate the embodiments of the present invention, specific embodiments of the present invention will be described below with reference to the accompanying drawings. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings and other embodiments can be obtained based on these drawings without inventive efforts.

[0030] Example 1:

[0031] like Figure 1-6 As shown, the novel electronic speed governor of this embodiment includes a base frame 1 and a wheel shaft 2, a pulley 3, a ratchet 4, a first pawl 5, a second pawl 6, an electromagnet 7 and a linkage mechanism installed on the base frame 1.

[0032] The base frame 1 is an L-shaped plate structure, including a bottom plate portion 1-1 and a vertical plate portion 1-2. The bottom plate portion 1-1 has a mounting hole and a wire rope through hole, and the vertical plate portion 1-2 is used to install the main components of the speed limiter.

[0033] Specifically, there is a through hole in the middle of the vertical plate portion 1-2 so that the wheel axle 2 can pass through; a bearing seat 8 coaxial with the through hole is installed on the vertical plate portion 1-2, and the wheel axle 2 is installed in the bearing seat 8 through two parallel bearings 9 (the number of bearings is not limited to two, and can be determined according to actual application requirements), so that the wheel axle 2 is rotatably connected to the base frame 1.

[0034] A sheave 3 is coaxially mounted on the axle 2, and a ratchet 4 is coaxially mounted on the sheave 3, ensuring synchronous rotation of the axle 2, sheave 3, and ratchet 4. Specifically, the sheave 3 of this embodiment comprises a coaxially rotating synchronous sheave 31, a first pressure plate 32, and a second pressure plate 33. The first and second pressure plates 32, 33 are respectively located on either side of the synchronous sheave 31 and contact the inner circumference of the synchronous sheave 31. Friction plates 34 are provided at the contact points of the first and second pressure plates 32, 33 with the synchronous sheave 31. The first and second pressure plates 32, 33 are fixedly connected. Friction is used to stop the wire rope.

[0035] In this embodiment, the ratchet 4 is disposed adjacent to the second pressing plate 33 and is fixedly connected to the first pressing plate 32 , so that the ratchet 4 and the rope wheel 3 are spaced apart and rotate synchronously.

[0036] In this embodiment, the first pawl 5 and the second pawl 6 are respectively located on both sides of the ratchet 4 and are both hinged to the vertical plate portion 1-2 of the base frame; the first pawl 5 and the second pawl 6 and the linkage mechanism are respectively located on both sides of the vertical plate portion 1-2 of the base frame.

[0037] The linkage mechanism of this embodiment includes a first pull rod 10 and a second pull rod 11, one end of the first pull rod 10 is hinged to one end of the second pull rod 11, the other end of the first pull rod 10 is hinged to the first pawl 5 through a first hinge 12, and the other end of the second pull rod 11 is hinged to the second pawl 6 through a second hinge 13; accordingly, the vertical plate portion 1-2 of the base frame has movable avoidance guide grooves I corresponding to the first hinge 12 and the second hinge 13 respectively.

[0038] In this embodiment, the electromagnet 7 is drivably connected to the second pull rod 11. Specifically, the telescopic end of the electromagnet 7's core is perpendicularly connected to a pin 14, which extends through and engages with the second pull rod 11. The second pull rod 11 has a waist-shaped hole II that allows for movement and engages with the pin 14. Furthermore, the upright plate 1-2 of the base frame has a guide slot III, into which the pin 14 engages, guiding its movement.

[0039] When the rotation speed of the rope wheel 3 reaches the target rotation speed, the electromagnet 7 is activated to drive the second pull rod 11, and the first pull rod 10 and the second pull rod 11 are respectively linked to the first pawl 5 and the second pawl 6 to move to cooperate with the ratchet 4 for braking, thereby stopping the rope wheel 3.

[0040] In this embodiment, magnets 15 are mounted on each end of the axle 2. Correspondingly, encoders 16 corresponding to the magnets are mounted on the base frame 1. The magnets 15 and encoders 16 form a magnetic encoder that detects axle speed, facilitating overspeed triggering and vehicle slippage triggering. The use of two magnetic encoders allows for calibration and ensures the accuracy of the electronic triggering. One encoder is mounted on the base frame's vertical plate 1-2, while the other is mounted on the base frame's vertical plate 1-2 via a suspended bracket 17.

[0041] In addition, an outer cover 0 and an electrical cabinet 18 are also installed on the base frame 1. The outer cover 0 is used to prevent foreign matter from entering the rope pulley, ratchet, etc.; the electrical cabinet 18 is used for power supply.

[0042] This embodiment also provides an elevator that adopts the new electronic speed governor of this embodiment, which has better reliability and ensures the safety of the elevator car.

[0043] Example 2:

[0044] The new electronic speed governor of this embodiment differs from that of embodiment 1 in that:

[0045] The rope pulley can be replaced with the existing commonly used one-piece rope pulley to meet the needs of different applications;

[0046] For other structures, please refer to Example 1;

[0047] The elevator of this embodiment adopts the new electronic speed governor of this embodiment.

[0048] Example 3:

[0049] The new electronic speed governor of this embodiment differs from that of embodiment 1 in that:

[0050] The electromagnet can also be replaced with existing commonly used drive components, such as cylinders, to meet the needs of different applications;

[0051] For other structures, please refer to Example 1;

[0052] The elevator of this embodiment adopts the new electronic speed governor of this embodiment.

[0053] The above description is only a detailed description of the preferred embodiments and principles of the present invention. For ordinary technicians in this field, based on the ideas provided by the present invention, there may be changes in the specific implementation methods, and these changes should also be considered as the scope of protection of the present invention.

Claims

1. A new type of electronic speed governor, characterized in that: The invention comprises a base frame, a wheel shaft mounted on the base frame, an electrical trigger, a linkage mechanism, a first pawl and a second pawl, wherein the wheel shaft is rotatably coupled to the base frame, and the wheel shaft, the rope pulley and the ratchet are coaxially mounted and rotate synchronously; the first pawl and the second pawl are respectively located on either side of the ratchet and are hinged to the base frame; the first pawl, the second pawl and the linkage mechanism are respectively located on either side of the base frame; The linkage mechanism includes a first pull rod and a second pull rod, one end of the first pull rod is hinged to one end of the second pull rod, the other end of the first pull rod is hinged to the first pawl via a first hinge, and the other end of the second pull rod is hinged to the second pawl via a second hinge; accordingly, the base frame has movable avoidance guide grooves corresponding to the first hinge and the second hinge respectively; The electrical trigger is drivingly connected to the first pull rod or the second pull rod; When the electrical trigger is actuated, the first pull rod or the second pull rod is driven to move the first pawl and the second pawl to engage with the ratchet wheel for braking.

2. A novel electronic speed governor according to claim 1, characterized in that: The electrical triggering component includes an electromagnet and a pin shaft. The telescopic end of the iron core of the electromagnet is vertically connected to the pin shaft. The pin shaft passes through the first pull rod or the second pull rod and is linked together.

3. A novel electronic speed governor according to claim 2, characterized in that: The first pull rod or the second pull rod has a movable avoidance waist-shaped hole matched with the pin shaft.

4. A novel electronic speed governor according to claim 3, characterized in that: The base frame has a guide groove, and the pin shaft is plugged into the guide groove to guide the movement of the pin shaft.

5. A novel electronic speed governor according to any one of claims 1 to 4, characterized in that: The rope pulley includes a concentrically rotating synchronous rope pulley, a first pressure plate and a second pressure plate. The first pressure plate and the second pressure plate are respectively arranged on both sides of the synchronous rope pulley and contact the inner circular surface of the synchronous rope pulley. The parts where the first pressure plate and the second pressure plate contact the synchronous rope pulley are both provided with friction plates; wherein the first pressure plate and the second pressure plate are fixedly connected.

6. A novel electronic speed governor according to claim 5, characterized in that: The ratchet is adjacent to the second pressing plate, and the ratchet is fixedly connected to the first pressing plate.

7. A novel electronic speed governor according to any one of claims 1 to 4, characterized in that: The base frame is provided with a bearing seat corresponding to the wheel axle, and the wheel axle is coaxially installed on the bearing seat through the bearing and passes through the base frame.

8. A novel electronic speed governor according to any one of claims 1 to 4, characterized in that: Magnetic steels are respectively provided at both ends of the wheel shaft, and the base frame is provided with encoders corresponding to the magnetic steels one by one.

9. The novel electronic speed governor according to claim 8, characterized in that: The base frame is an L-shaped plate structure, wherein one encoder is arranged on the base frame, and the other encoder is arranged on the base frame through a suspended bracket.

10. An elevator, characterized in that: A novel electronic speed governor as described in any one of claims 1 to 9 is used.

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