CN117228477A - Novel electronic speed limiter and elevator - Google Patents
Novel electronic speed limiter and elevator Download PDFInfo
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- CN117228477A CN117228477A CN202210630646.2A CN202210630646A CN117228477A CN 117228477 A CN117228477 A CN 117228477A CN 202210630646 A CN202210630646 A CN 202210630646A CN 117228477 A CN117228477 A CN 117228477A
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- pull rod
- pawl
- base frame
- speed limiter
- electronic speed
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- 230000001360 synchronised effect Effects 0.000 claims description 12
- 229910000831 Steel Inorganic materials 0.000 claims description 8
- 239000010959 steel Substances 0.000 claims description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 3
- 239000000725 suspension Substances 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
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Abstract
The invention relates to a novel electronic speed limiter and an elevator, wherein the novel electronic speed limiter comprises a base frame, a wheel shaft, an electric trigger piece, a linkage mechanism, a first pawl and a second pawl, wherein the wheel shaft, the electric trigger piece, the linkage mechanism, the first pawl and the second pawl are arranged on two sides of a ratchet wheel respectively and are hinged to the base frame; the first pawl, the second pawl and the linkage mechanism are respectively positioned at two sides 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 with one end of the second pull rod, the other end of the first pull rod is hinged with the first pawl through a first hinge piece, and the other end of the second pull rod is hinged with the second pawl through a second hinge piece; the electric trigger piece is in driving connection with the first pull rod or the second pull rod; when the electric trigger piece acts, the first pull rod or the second pull rod is driven to link the first pawl and the second pawl to move to be matched with the ratchet wheel in a braking way. The invention improves the linkage mechanism, so that the triggering stroke of the electric triggering piece is shorter, and the working stability of the electric triggering piece is improved.
Description
Technical Field
The invention belongs to the technical field of elevator components, and particularly relates to a novel electronic speed limiter and an elevator.
Background
Currently, mechanical speed limiters are widely used on the market, but have the following drawbacks: firstly, the action speed is inaccurate, the action is performed only in a certain speed range, and hidden danger that the action cannot be triggered at low speed exists; secondly, the action speed is easy to change along with the time, and periodic inspection is needed, otherwise, the reliable action can not be performed; 3. there is some hysteresis in the mechanical triggering.
Based on this, an electronic speed limiter as disclosed in patent document with publication No. CN216302983U has been developed in the earlier study, which has a high requirement for the electromagnet, i.e., needs to have a large stroke; in order to ensure the working stability of the electromagnet, the use of a small electromagnet and the working stability of the speed limiter, it is necessary to further improve the structure of the speed limiter.
Disclosure of Invention
Based on the above-mentioned drawbacks and deficiencies of the prior art, it is an object of the present invention to at least solve one or more of the above-mentioned problems of the prior art, in other words to provide a new electronic speed limiter and elevator meeting one or more of the above-mentioned needs.
In order to achieve the aim of the invention, the invention adopts the following technical scheme:
the novel electronic speed limiter comprises a base frame, and a wheel shaft, an electric trigger piece, a linkage mechanism, a first pawl and a second pawl which are arranged on the base frame, wherein the wheel shaft is in running fit with the base frame, and the wheel shaft, a rope wheel and a ratchet wheel are coaxially arranged and synchronously rotate; the first pawl and the second pawl are respectively positioned at two sides of the ratchet wheel and are hinged with the base frame; the first pawl, the second pawl and the linkage mechanism are respectively positioned at two sides 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 with one end of the second pull rod, the other end of the first pull rod is hinged with the first pawl through a first hinge, and the other end of the second pull rod is hinged with the second pawl through a second hinge; correspondingly, the base frame is provided with movable avoidance guide grooves corresponding to the first hinge piece and the second hinge piece respectively;
the electric trigger piece is in driving connection with the first pull rod or the second pull rod;
when the electric trigger piece acts, the first pull rod or the second pull rod is driven to link the first pawl and the second pawl to move to be matched with the ratchet wheel in a braking way.
As a preferable scheme, the electric trigger piece comprises an electromagnet and a pin shaft, the telescopic end of an iron core of the electromagnet is vertically connected with the pin shaft, and the pin shaft penetrates through the first pull rod or the second pull rod and is in linkage fit.
Preferably, the first pull rod or the second pull rod is provided with a movable avoidance waist-shaped hole matched with the pin shaft.
Preferably, the base frame is provided with a guide groove, and the pin shaft is in plug-in fit with the guide groove so as to guide the movement of the pin shaft.
As a preferable scheme, the rope pulley comprises a synchronous rope pulley, a first pressing plate and a second pressing plate which rotate concentrically, wherein the first pressing plate and the second pressing plate are respectively arranged at two sides of the synchronous rope pulley and are contacted with the inner circular surface of the synchronous rope pulley, and friction plates are arranged at the contact parts of the first pressing plate and the second pressing plate and the synchronous rope pulley; wherein, first clamp plate and second clamp plate fixed connection.
As a preferable scheme, the ratchet wheel is adjacently arranged on the second pressing plate and is fixedly connected with the first pressing plate.
Preferably, the base frame is provided with a bearing seat corresponding to the wheel axle, and the wheel axle is coaxially arranged on the bearing seat through a bearing and penetrates through the base frame.
As a preferable scheme, magnetic steel is respectively arranged at two ends of the wheel shaft, and encoders corresponding to the magnetic steel one by one are arranged on the base frame.
As an optimal scheme, the base frame is of an L-shaped plate structure, one encoder is arranged on the base frame, and the other encoder is arranged on the base frame through a suspension bracket.
The invention also provides an elevator, which adopts the novel electronic speed limiter according to any scheme.
Compared with the prior art, the invention has the beneficial effects that:
(1) The linkage mechanism is improved, so that the triggering stroke of the electric triggering piece is shorter, and the working stability of the electric triggering piece is improved and the electric triggering piece is miniaturized;
(2) The invention adopts the braking cooperation of the ratchet wheel and the pawl and the friction braking cooperation of the rope wheel to further improve the working stability of the speed limiter;
(3) The base frame is of an L-shaped plate structure and is assembled with the whole structure, and the structure is more miniaturized.
Drawings
FIG. 1 is a schematic view of the structure of a novel electronic governor of example 1 of the present invention;
fig. 2 is a schematic structural view of a base frame according to embodiment 1 of the present invention;
FIG. 3 is a schematic view of the structure of the novel electronic governor of example 1 of the present invention (omitting the housing and the electrical cabinet);
FIG. 4 is a section view of section A-A of FIG. 3;
FIG. 5 is a schematic diagram of the linkage mechanism of embodiment 1 of the present invention;
fig. 6 is a schematic diagram of the linkage mechanism and pawl of the electronic speed limiter according to embodiment 1 of the present invention.
Detailed Description
In order 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. It is evident that the drawings in the following description are only examples of the invention, from which other drawings and other embodiments can be obtained by a person skilled in the art without inventive effort.
Example 1:
as shown in fig. 1 to 6, the novel electronic speed limiter of the embodiment comprises a base frame 1, and a wheel shaft 2, a rope pulley 3, a ratchet wheel 4, a first pawl 5, a second pawl 6, an electromagnet 7 and a linkage mechanism which are arranged on the base frame 1.
The base frame 1 is of an L-shaped plate structure and comprises a bottom plate part 1-1 and a vertical plate part 1-2, wherein the bottom plate part 1-1 is provided with a mounting hole and a wire rope penetrating hole, and the vertical plate part 1-2 is used for mounting a main body part of the speed limiter.
Specifically, the middle part of the riser part 1-2 has a through hole so that the wheel shaft 2 penetrates; the bearing seat 8 coaxial with the through hole is arranged on the vertical plate part 1-2, and the wheel shaft 2 is arranged in the bearing seat 8 through two parallel bearings 9 (the number of the bearings is not limited to two and can be specifically determined according to practical application requirements), so that the wheel shaft 2 is rotatably connected with the base frame 1.
The wheel shaft 2 is coaxially provided with the rope pulley 3, and the rope pulley 3 is coaxially provided with the ratchet wheel 4, so that the wheel shaft 2, the rope pulley 3 and the ratchet wheel 4 can synchronously rotate. Specifically, the sheave 3 of the present embodiment includes a synchronous sheave 31 that rotates concentrically, a first pressing plate 32 and a second pressing plate 33, the first pressing plate 32 and the second pressing plate 33 are respectively disposed on two sides of the synchronous sheave 31 and contact with an inner circular surface of the synchronous sheave 31, and friction plates 34 are disposed at positions where the first pressing plate 32 and the second pressing plate 33 contact with the synchronous sheave 31; wherein the first pressing plate 32 and the second pressing plate 33 are fixedly connected. And the steel wire rope is stopped by friction force.
The ratchet wheel 4 of the embodiment is adjacently arranged on the second pressing plate 33, and the ratchet wheel 4 is fixedly connected with the first pressing plate 32, so that the ratchet wheel 4 and the rope pulley 3 are distributed at intervals and synchronously rotate.
The first pawl 5 and the second pawl 6 of the embodiment are respectively positioned at two sides of the ratchet wheel 4 and are hinged with the vertical plate part 1-2 of the base frame; the first pawl 5, the second pawl 6 and the linkage mechanism are respectively positioned at two sides of the vertical plate part 1-2 of the base frame.
The linkage mechanism of the embodiment comprises a first pull rod 10 and a second pull rod 11, wherein one end of the first pull rod 10 is hinged with one end of the second pull rod 11, the other end of the first pull rod 10 is hinged with the first pawl 5 through a first hinging piece 12, and the other end of the second pull rod 11 is hinged with the second pawl 6 through a second hinging piece 13; correspondingly, the riser part 1-2 of the base frame has a movable avoidance guide I corresponding to the first hinge 12 and the second hinge 13, respectively.
The electromagnet 7 of the present embodiment is in driving connection with the second pull rod 11. Specifically, the telescopic end of the iron core of the electromagnet 7 is vertically connected with a pin 14, and the pin 14 penetrates through the second pull rod 11 to be in parallel movable fit; the second pull rod 11 is provided with a movable avoidance waist-shaped hole II matched with the pin shaft 14. In addition, the vertical plate part 1-2 of the base frame is provided with a guide groove III, and the pin 14 is spliced and matched with the guide groove III so as to guide the movement of the pin 14.
When the rotation speed of the rope pulley 3 reaches the target rotation speed, the electromagnet 7 acts to drive the second pull rod 11, and the first pawl 5 and the second pawl 6 are respectively linked to move to be in braking fit with the ratchet wheel 4 through the first pull rod 10 and the second pull rod 11, so that the rope pulley 3 is stopped.
The two ends of the wheel axle 2 of the embodiment are respectively provided with the magnetic steel 15, correspondingly, the base frame 1 is respectively provided with the encoders 16 corresponding to the magnetic steel one by one, the magnetic steel 15 and the encoders 16 are matched to form a magnetic encoder, the detection of the wheel axle rotating speed is realized, and overspeed triggering, sliding triggering and the like are facilitated; and the design of two magnetic encoders is adopted to realize calibration and ensure the accuracy of electronic triggering. One encoder is arranged on the vertical plate part 1-2 of the base frame, and the other encoder is arranged on the vertical plate part 1-2 of the base frame through a suspension bracket 17.
In addition, the base frame 1 is also provided with an outer cover 0 and an electrical cabinet 18, wherein the outer cover 0 is used for preventing foreign matters from entering a rope wheel, a ratchet wheel and the like; the electrical cabinet 18 is used for supplying power.
The embodiment also provides an elevator, and the novel electronic speed limiter is adopted, so that the reliability is better, and the safety of the elevator car is ensured.
Example 2:
the novel electronic speed limiter of this embodiment is different from embodiment 1 in that:
the rope wheel can be replaced by the existing commonly used rope wheel formed integrally, so that the requirements of different applications are met;
other structures can be referred to embodiment 1;
the elevator of the embodiment adopts the novel electronic speed limiter of the embodiment.
Example 3:
the novel electronic speed limiter of this embodiment is different from embodiment 1 in that:
the electromagnet can be replaced by the existing common driving component, such as a cylinder and the like, so that the requirements of different applications are met;
other structures can be referred to embodiment 1;
the elevator of the embodiment adopts the novel electronic speed limiter of the embodiment.
The foregoing is only illustrative of the preferred embodiments and principles of the present invention, and changes in specific embodiments will occur to those skilled in the art upon consideration of the teachings provided herein, and such changes are intended to be included within the scope of the invention as defined by the claims.
Claims (10)
1. The novel electronic speed limiter is characterized by comprising a base frame, and a wheel shaft, an electric trigger piece, a linkage mechanism, a first pawl and a second pawl which are arranged on the base frame, wherein the wheel shaft is in running fit with the base frame, and the wheel shaft, the rope pulley and the ratchet wheel are coaxially arranged and synchronously rotate; the first pawl and the second pawl are respectively positioned at two sides of the ratchet wheel and are hinged with the base frame; the first pawl, the second pawl and the linkage mechanism are respectively positioned at two sides 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 with one end of the second pull rod, the other end of the first pull rod is hinged with the first pawl through a first hinge, and the other end of the second pull rod is hinged with the second pawl through a second hinge; correspondingly, the base frame is provided with movable avoidance guide grooves corresponding to the first hinge piece and the second hinge piece respectively;
the electric trigger piece is in driving connection with the first pull rod or the second pull rod;
when the electric trigger piece acts, the first pull rod or the second pull rod is driven to link the first pawl and the second pawl to move to be matched with the ratchet wheel in a braking way.
2. The novel electronic speed limiter according to claim 1, wherein the electrical triggering part comprises an electromagnet and a pin shaft, the telescopic end of an iron core of the electromagnet is vertically connected with the pin shaft, and the pin shaft penetrates through the first pull rod or the second pull rod and is in linkage fit.
3. The novel electronic speed limiter according to claim 2, wherein the first pull rod or the second pull rod is provided with a movable avoidance waist-shaped hole matched with the pin shaft.
4. A novel electronic speed limiter according to claim 3 wherein the base frame has a guide slot into which the pin is inserted to guide the movement of the pin.
5. The novel electronic speed limiter according to any one of claims 1 to 4, wherein the rope pulley comprises a synchronous rope pulley, a first pressing plate and a second pressing plate which rotate concentrically, the first pressing plate and the second pressing plate are respectively arranged on two sides of the synchronous rope pulley and are contacted with the inner circular surface of the synchronous rope pulley, and friction plates are arranged at the contact parts of the first pressing plate and the second pressing plate with the synchronous rope pulley; wherein, first clamp plate and second clamp plate fixed connection.
6. The novel electronic speed limiter according to claim 5, wherein the ratchet wheel is adjacent to the second pressing plate and is fixedly connected with the first pressing plate.
7. A novel electronic speed limiter according to any one of claims 1-4 wherein the base frame is provided with bearing blocks corresponding to the axles, and the axles are coaxially mounted to the bearing blocks via bearings and extend through the base frame.
8. The novel electronic speed limiter according to claims 1-4, wherein magnetic steel is respectively arranged at two ends of the wheel shaft, and the base frame is provided with encoders in one-to-one correspondence with the magnetic steel.
9. The novel electronic speed limiter according to claim 8, wherein the base frame is of an L-shaped plate structure, one encoder is arranged on the base frame, and the other encoder is arranged on the base frame through a suspension bracket.
10. Elevator, characterized in that a new electronic speed limiter according to any one of claims 1-9 is used.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210630646.2A CN117228477A (en) | 2022-06-06 | 2022-06-06 | Novel electronic speed limiter and elevator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210630646.2A CN117228477A (en) | 2022-06-06 | 2022-06-06 | Novel electronic speed limiter and elevator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117228477A true CN117228477A (en) | 2023-12-15 |
Family
ID=89097172
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210630646.2A Pending CN117228477A (en) | 2022-06-06 | 2022-06-06 | Novel electronic speed limiter and elevator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117228477A (en) |
-
2022
- 2022-06-06 CN CN202210630646.2A patent/CN117228477A/en active Pending
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