CN213059999U - Elevator speed limiter - Google Patents
Elevator speed limiter Download PDFInfo
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- CN213059999U CN213059999U CN202020908173.4U CN202020908173U CN213059999U CN 213059999 U CN213059999 U CN 213059999U CN 202020908173 U CN202020908173 U CN 202020908173U CN 213059999 U CN213059999 U CN 213059999U
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Abstract
The utility model discloses an elevator speed limiter, which belongs to the field of elevator accessories and comprises a mounting frame, a rotating shaft, a rope pulley, a ratchet wheel, a pawl, a traction rod, a brake plate, a safety switch and a centrifugal hammer; the middle position of the traction bar is fixedly connected with the ratchet wheel through a fixing column, one end of the traction bar is connected with the brake plate and used for pulling the brake plate to be close to the rope wheel, and the middle position of the brake plate is hinged with a brake block which is used for contacting with the rope wheel to decelerate and brake the rope wheel; a transmission piece for triggering the pawl is hinged on the mounting frame, and a connecting rod fixedly connected with the transmission piece is hinged at the position of the mounting frame corresponding to the transmission piece; the rotating shaft is fixedly arranged on the mounting frame, and the rope wheel is rotatably connected with the rotating shaft through a bearing; the mounting bracket is fixedly provided with an encoder, and an output shaft of the encoder is fixedly provided with a second belt wheel. This encoder mounting structure of elevator overspeed governor is simple, and is lower to the mounting bracket requirement, can reduce the installation degree of difficulty of bearing effectively, improves the life of bearing.
Description
Technical Field
The utility model belongs to the technical field of the elevator accessory, concretely relates to elevator overspeed governor.
Background
The elevator speed limiter is one of safety control components in an elevator safety protection system, and when an elevator runs over speed or falls, the speed limiter and the safety tongs perform linkage action to decelerate and stop an elevator car. The encoder on the elevator overspeed governor can detect the positional information that elevator car was located according to rope sheave pivoted speed and number of turns of motion to compare this positional information and elevator main encoder, if monitor that two encoder information differ great, then need adjust the elevator.
The rope sheave and the main shaft rigid connection of traditional elevator overspeed governor are in the same place, and the main shaft passes through the bearing and links to each other with the mounting bracket, and the encoder directly links to each other with the main shaft, and this mounting means requires highly to the installation accuracy of the mount pad of bearing, and the equipment is very inconvenient, if mount pad and installation accuracy are not up to standard, can influence the life of bearing.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an elevator overspeed governor to solve the problem that proposes in the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme:
an elevator speed limiter comprises a mounting frame, a rotating shaft, a rope pulley, a ratchet wheel, a pawl, a traction rod, a brake plate, a safety switch and a centrifugal hammer; the middle position of the traction rod is fixedly connected with the ratchet wheel through a fixing column, one end of the traction rod is connected with the brake plate and used for pulling the brake plate to be close to the rope wheel, and the middle position of the brake plate is hinged with a brake block which is used for contacting with the rope wheel to enable the rope wheel to decelerate and brake; a transmission piece for triggering the pawl is hinged to the mounting frame, and a connecting rod fixedly connected with the transmission piece is hinged to the position, corresponding to the transmission piece, of the mounting frame; the rotating shaft is fixedly arranged on the mounting frame, the rope wheel is rotatably connected with the rotating shaft through a bearing, and a first belt wheel rotatably connected with the rotating shaft is fixedly arranged on the rope wheel;
the mounting frame is fixedly provided with an encoder, and an output shaft of the encoder is fixedly provided with a second belt wheel;
the second belt wheel is in transmission connection with the first belt wheel through a synchronous belt.
The elevator speed limiter also has the following technical characteristics:
the brake disc is characterized in that a connecting column is welded at one end, close to the brake disc, of the attraction rod, a limiting disc is fixedly mounted at one end, far away from the attraction rod, of the connecting column, a first reset spring is sleeved on the outer wall of the connecting column, and two ends of the first reset spring are respectively connected with the brake disc and the limiting disc.
The connecting rod is close to the one end of driving medium with be provided with second reset spring between the mounting bracket, the both ends of second reset spring respectively with the connecting rod with mounting bracket fixed connection.
The encoder with be provided with the connecting plate between the mounting bracket, the encoder with connecting plate fixed connection, the connecting plate with pass through screw fixed connection between the mounting bracket.
This elevator overspeed governor sets up first band pulley, second band pulley and encoder, and with pivot snap-on the mounting bracket, changes the mounting means of traditional main shaft, bearing and encoder to reduce the installation accuracy of main shaft, the equipment of elevator overspeed governor is more convenient, improves the packaging efficiency greatly.
Drawings
Fig. 1 is a schematic front perspective view of an elevator governor;
fig. 2 is a schematic diagram of a rear perspective structure of an elevator speed limiter;
fig. 3 is a schematic diagram of a top view of an elevator governor;
fig. 4 is a schematic sectional view along the direction a-a in fig. 3.
Detailed Description
The present invention will be further described with reference to the following examples.
The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention. The condition in the embodiment can be further adjusted according to concrete condition the utility model discloses a it is right under the design prerequisite the utility model discloses a simple improvement of method all belongs to the utility model discloses the scope of claiming.
As shown in fig. 1-4, the utility model provides an elevator speed limiter, which comprises a mounting frame 1, a rotating shaft 2, a rope wheel 3, a ratchet 4, a pawl 5, an attraction rod 6, a brake plate 7, a safety switch 8 and a centrifugal hammer 9; the middle position of the attraction rod 6 is fixedly connected with the ratchet wheel 4 through a fixing column 22, one end of the attraction rod 6 is connected with the brake plate 7 and used for pulling the brake plate 7 to be close to the rope wheel 3, and the middle position of the brake plate 7 is hinged with a brake block 18 which is used for contacting with the rope wheel 3 to decelerate and brake the rope wheel 3; the mounting rack 1 is hinged with a transmission piece for triggering the pawl 5, and the position of the mounting rack 1 corresponding to the transmission piece is hinged with a connecting rod 23 fixedly connected with the transmission piece.
Different from the traditional elevator speed limiter, the rotating shaft 2 is fixedly arranged on the mounting frame 1, the rope pulley 3 is rotatably connected with the rotating shaft 2 through a bearing 12, and the first belt pulley 10 rotatably connected with the rotating shaft 2 is fixedly arranged on the rope pulley 3;
an encoder 13 is fixedly arranged on the mounting rack 1, and a second belt wheel 14 is fixedly arranged on an output shaft of the encoder 13;
the second belt pulley 14 is in transmission connection with the first belt pulley 10 through a synchronous belt 11.
A rotating shaft 2 of the elevator speed limiter is fixedly arranged on a mounting frame 1, a rope pulley 3 is rotatably arranged on the rotating shaft 2 through a bearing 12 to drive the rope pulley 3 to rotate, and meanwhile, a first belt pulley 10 drives a second belt pulley 14 to rotate, so that an encoder 13 can monitor the position information of an elevator car according to the rotating speed of the rope pulley 3; a rotating shaft of a traditional elevator speed limiter is arranged on a mounting frame through a bearing, a rope pulley is fixedly arranged on the rotating shaft, an encoder is directly connected with a main shaft, and the rope pulley has high requirements on a mounting seat of the bearing; compared with the prior art, the elevator has the advantages that the requirement on the mounting precision of the bearing is relatively low, so that the elevator speed limiter is more convenient and quicker to assemble.
In order to enable the pawl 5 to release the ratchet wheel 4, the brake plate 7 can drive the brake block 18 to separate from and release the rope pulley 3, as shown in fig. 1, 2 and 3, one end of the attraction rod 6 close to the brake plate 7 is welded with a connecting column 15, one end of the connecting column 15 far away from the attraction rod 6 is fixedly provided with a limiting disc 16, the outer wall of the connecting column 15 is sleeved with a first return spring 17, and two ends of the first return spring 17 are respectively connected with the brake plate 7 and the limiting disc 15.
After the pawl 5 releases the ratchet wheel, under the elastic force of the first return spring 17, the brake plate 7 is far away from the rope wheel 3, so that the brake block 18 is separated and the rope wheel 3 is released, and the rope wheel 3 is recovered to act.
In order to make the pull rod 23 act to return to perform reciprocating action, as shown in fig. 2, a second return spring 24 is arranged between one end of the connecting rod 23 close to the transmission member and the mounting frame 1, and two ends of the second return spring 24 are respectively fixedly connected with the connecting rod 23 and the mounting frame 1.
After the pull rod 23 acts to trigger the pawl 5, the pull rod 23 is restored under the action of the elastic force of the second return spring 24, so that the pull rod 23 can reciprocate.
In order to facilitate installation and maintenance of the encoder 13, as shown in fig. 1 and 3, a connecting plate 19 is disposed between the encoder 13 and the mounting frame 1, the encoder 13 is fixedly connected with the connecting plate 19, and the connecting plate 19 is fixedly connected with the mounting frame 1 through a screw 20.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (4)
1. An elevator speed limiter comprises a mounting frame (1), a rotating shaft (2), a rope wheel (3), a ratchet wheel (4), a pawl (5), an attraction rod (6), a brake plate (7), a safety switch (8) and a centrifugal hammer (9); the middle position of the traction rod (6) is fixedly connected with the ratchet wheel (4) through a fixing column (22), one end of the traction rod (6) is connected with the brake plate (7) and used for pulling the brake plate (7) to be close to the rope wheel (3), and the middle position of the brake plate (7) is hinged with a brake block (18) which is used for contacting with the rope wheel (3) to enable the rope wheel (3) to decelerate and brake; a transmission piece for triggering the pawl (5) is hinged to the mounting frame (1), and a connecting rod (23) fixedly connected with the transmission piece is hinged to the position, corresponding to the transmission piece, of the mounting frame (1); the method is characterized in that: the rotating shaft (2) is fixedly arranged on the mounting frame (1), the rope wheel (3) is rotatably connected with the rotating shaft (2) through a bearing (12), and a first belt wheel (10) rotatably connected with the rotating shaft (2) is fixedly arranged on the rope wheel (3);
an encoder (13) is fixedly installed on the mounting rack (1), and a second belt wheel (14) is fixedly installed on an output shaft of the encoder (13);
the second belt wheel (14) is in transmission connection with the first belt wheel (10) through a synchronous belt (11).
2. The elevator governor of claim 1, wherein: the utility model discloses a brake block, including spliced pole (15), outer wall cover of spliced pole (15), the spliced pole (15) are kept away from the one end fixed mounting of gravitation stick (6) has spacing dish (16), the outward appearance wall cover of spliced pole (15) is equipped with first reset spring (17), the both ends of first reset spring (17) respectively with brake block (7) with spacing dish (16) meet.
3. The elevator governor of claim 1, wherein: one end that connecting rod (23) are close to the driving medium with be provided with second reset spring (24) between mounting bracket (1), the both ends of second reset spring (24) respectively with connecting rod (23) with mounting bracket (1) fixed connection.
4. The elevator governor of claim 1, wherein: encoder (13) with be provided with connecting plate (19) between mounting bracket (1), encoder (13) with connecting plate (19) fixed connection, connecting plate (19) with through screw (20) fixed connection between mounting bracket (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020908173.4U CN213059999U (en) | 2020-05-26 | 2020-05-26 | Elevator speed limiter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020908173.4U CN213059999U (en) | 2020-05-26 | 2020-05-26 | Elevator speed limiter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213059999U true CN213059999U (en) | 2021-04-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020908173.4U Active CN213059999U (en) | 2020-05-26 | 2020-05-26 | Elevator speed limiter |
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| Country | Link |
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| CN (1) | CN213059999U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114813093A (en) * | 2022-06-27 | 2022-07-29 | 南通环宇特种设备安全评估有限公司 | Special equipment instrument's inspection check out test set |
-
2020
- 2020-05-26 CN CN202020908173.4U patent/CN213059999U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114813093A (en) * | 2022-06-27 | 2022-07-29 | 南通环宇特种设备安全评估有限公司 | Special equipment instrument's inspection check out test set |
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