CN115490112A - Cam type braking device for avoiding accidental movement of elevator - Google Patents
Cam type braking device for avoiding accidental movement of elevator Download PDFInfo
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- CN115490112A CN115490112A CN202211166251.8A CN202211166251A CN115490112A CN 115490112 A CN115490112 A CN 115490112A CN 202211166251 A CN202211166251 A CN 202211166251A CN 115490112 A CN115490112 A CN 115490112A
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- cam
- elevator
- rack
- braking
- gear
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
- B66B5/16—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well
- B66B5/18—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well and applying frictional retarding forces
- B66B5/20—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well and applying frictional retarding forces by means of rotatable eccentrically-mounted members
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Maintenance And Inspection Apparatuses For Elevators (AREA)
Abstract
The invention provides a cam type braking device for preventing an elevator from accidentally moving, and belongs to the technical field of elevators. It includes fixing base, braking plate and rack, and the fixing base links firmly on elevator car, and the vertical setting of rack just links firmly on the fixing base, and the braking plate is connected with the driving source, and the driving source links firmly on elevator car, and the driving source is used for driving the braking plate and carries out vertical lift for the rack, and the braking plate is connected with at least a pair of cam, and two cam symmetries with a pair set up the both sides at the rack, and the coaxial gear that has linked firmly on the eccentric shaft of every cam, and the gear is connected with the meshing of rack. The cam is attached to the guide rail of the elevator, when the elevator is monitored to move accidentally, the driving source can drive the brake plate to lift, and in the lifting process of the brake plate, the gear is meshed and connected to the rack, and the gear drives the cam to rotate along with the lifting of the brake plate, so that the original plane part is changed into a cambered surface part with a larger radial diameter to be attached to the guide rail of the elevator to perform clamping type braking.
Description
Technical Field
The invention belongs to the technical field of elevators, relates to a braking device for preventing an elevator from moving accidentally, and particularly relates to a cam type braking device for preventing the elevator from moving accidentally.
Background
The safe operation of the elevator consists of two aspects, namely the safe operation when the elevator is lifted and the safety when people get in and out of the elevator car when the elevator is stopped, wherein the safety when the people get in and out of the elevator car when the elevator is stopped is particularly important, particularly under the condition that a landing door is not locked or the elevator car door is not closed, the failure of a driving host machine or any single part of a driving control system can cause the accidental movement of the elevator car, and the danger can occur when people get in and out of the elevator car door in an open state or the shearing accident can occur between the elevator car and the floor. Chinese patent No. (CN 109019240B) discloses a brake control device provided on an elevator car; a car displacement detection unit for detecting a displacement signal of the car; a car door detection unit for detecting an opening/closing state signal of the car door; a landing door detection means for detecting a landing door open/close state signal; the transmission unit is used for transmitting a displacement signal of the car, an opening and closing state signal of the car door and an opening and closing state signal of the landing door to the control unit; and the control unit receives signals of one or more units of the car displacement detection unit, the car door detection unit and the landing door detection unit, controls the brake assembly to operate according to the signals, and enables the brake assembly to inhibit the car from accidentally moving under the condition that the landing door is not locked or the car door is not closed by means of electromagnetic actuating force. However, the upper device and the lower device of the patent are symmetrically arranged up and down to brake, and the upper device and the lower device respectively brake up and down, so that the structure is complex, and faults are more likely to occur.
Disclosure of Invention
The invention aims to solve the problems in the prior art and provides a cam type braking device for preventing an elevator from moving accidentally.
The purpose of the invention can be realized by the following technical scheme: the utility model provides an avoid unexpected cam-type arresting gear who removes of elevator, a serial communication port, includes fixing base, braking plate and rack, the fixing base links firmly on elevator car, the vertical setting of rack just links firmly on the fixing base, the braking plate is connected with the driving source, the driving source links firmly on elevator car, and the driving source is used for driving the braking plate and carries out vertical lift for the rack, the braking plate is connected with at least a pair of cam, and two cam symmetries with a pair set up in the both sides of rack, and the coaxial gear that has linked firmly on the eccentric shaft of every cam, the gear is connected with the meshing of rack.
In the above cam-type braking device for preventing the elevator from accidentally moving, the braking plate is provided with a through groove in a penetrating type, the rear portion of the rack is fixedly connected with a connecting rod, the connecting rod is inserted in the through groove, and the connecting rod is fixedly connected with the fixed seat.
In the above cam type braking device for preventing the accidental movement of the elevator, the connecting rod is slidably connected in the through groove.
In the above cam type braking device for preventing the elevator from accidentally moving, the braking plate has a vertically arranged slide rail, and the rack is slidably connected to the slide rail.
In the above-mentioned cam-type braking device for avoiding accidental movement of the elevator, the slide rail includes an upper slide rail portion and a lower slide rail portion, and both the upper slide rail portion and the lower slide rail portion are communicated with the through groove.
In the above cam-type braking device for preventing the elevator from accidentally moving, the rear wall of the braking plate is provided with a first limiting plate portion and a second limiting plate portion which protrude backwards, the connecting rod is vertically inserted with an adjusting screw rod, two ends of the adjusting screw rod respectively penetrate through the first limiting plate portion and the second limiting plate portion and are respectively locked by a first adjusting nut and a second adjusting nut, a first adjusting spring is arranged between the connecting rod and the first limiting plate portion, and a second adjusting spring is arranged between the connecting rod and the second limiting plate portion.
In the above cam type braking device for preventing the elevator from accidentally moving, the braking plate is fixedly connected with at least one pair of fixed shafts arranged in pairs, and the cam and the gear are connected to the fixed shafts through the first bearing and the second bearing respectively.
In the cam type braking device for preventing the elevator from moving accidentally, the second bearing is positioned in the cam inner cavity, one end of the first bearing is positioned in the gear inner cavity, and the other end of the first bearing is positioned in the cam inner cavity.
In the above cam type braking device for preventing the elevator from moving accidentally, the cam surface of the cam includes a smooth transition flat surface portion and an arc surface portion, and the radial direction of the arc surface portion is larger than that of the flat surface portion.
In the above cam type braking device for preventing the elevator from accidentally moving, the fixing seat is fixedly connected to the top and/or the bottom of the elevator car, the driving source is fixedly connected to the elevator car, and the driving source is an electromagnetic valve, a hydraulic oil cylinder or a push rod motor.
Compared with the prior art, the invention has the following advantages:
1. the cam disclosed by the invention is attached to the elevator guide rail, when the accidental movement of the elevator is monitored, the driving source can drive the brake plate to lift, and in the lifting process of the brake plate, the gear is meshed and connected to the rack, and the gear drives the cam to rotate along with the lifting of the brake plate, so that the original plane part is changed into a cambered surface part with a larger radial diameter to be attached to the elevator guide rail for clamping type braking;
2. the present invention is a self-contained modular device that can be conveniently mounted to the top and/or bottom of an elevator car.
Drawings
Fig. 1 is a schematic view of the structure of the present invention mounted on an elevator car.
Fig. 2 is a front view of the present invention.
Fig. 3 is a rear view of the present invention.
Fig. 4 is a side view of the present invention.
Fig. 5 is a top view of the present invention.
Fig. 6 is a longitudinal sectional view of the present invention.
Fig. 7 is a schematic view of the structure of the braking plate of the present invention.
FIG. 8 is a sectional view showing a connection structure of a cam and a brake plate according to the present invention.
In the figure, 1, an elevator car; 2. an elevator guide rail; 3. a fixed seat; 301. a base; 302. a fixing rod; 4. a brake plate; 401. a through groove; 402. an upper slide rail portion; 403. a lower slide rail portion; 404. a first limit plate portion; 405. a second limiting plate part; 5. a rack; 501. a card slot; 6. a drive source; 7. a cam; 8. a gear; 9. a connecting rod; 10. a first adjusting nut; 11. a second adjusting nut; 12. a first regulating spring; 13. a second regulating spring; 14. adjusting the screw rod; 15. a housing; 16. fastening a first bolt; 17. a fixed shaft; 18. a first bearing; 19. a second bearing; 20. and fastening a second bolt.
Detailed Description
The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.
Referring to fig. 1-8, this embodiment is a cam type arresting gear who avoids unexpected removal of elevator, including driving source 6, fixing base 3, braking plate 4, rack 5 and shell 15, driving source 6 and fixing base 3 all link firmly on elevator car 1, rack 5 vertical setting just links firmly on fixing base 3, braking plate 4 is connected with driving source 6, driving source 6 is used for driving braking plate 4 and carries out vertical lift for rack 5, driving source 6 is for linking firmly solenoid valve, hydraulic cylinder or the push rod motor on elevator car 1. The brake plate 4 is connected with two pairs of cams 7, and the two cams 7 of the same pair are symmetrically arranged side by side and are used for clamping on the elevator guide rail 2 for braking. The eccentric shaft of each cam 7 is coaxially and fixedly connected with a gear 8, and two gears 8 of the same pair are symmetrically arranged at two sides of the rack 5 and are meshed and connected with the rack 5; the brake plate 4 is provided with a through groove 401 in a penetrating mode, the rear portion of the rack 5 is fixedly connected with a connecting rod 9, the connecting rod 9 is inserted in the through groove 401, and the connecting rod 9 is fixedly connected with the fixing seat 3.
Further, the brake plate 4 is fixedly connected with at least one pair of fixed shafts 17 arranged in pairs through a second fastening bolt 20, and the cam 7 and the gear 8 are connected to the fixed shafts 17 through a first bearing 18 and a second bearing 19 respectively.
Further, a second bearing 19 is positioned in the inner cavity of the cam 7, one end of the first bearing 18 is positioned in the inner cavity of the gear 8, and the other end is positioned in the inner cavity of the cam 7. The first bearing 18 is positioned in the inner cavity of the connecting part of the gear 8 and the cam 7, can disperse stress, provides the connecting structural strength between the cam 7 and the gear 8, and ensures safety.
Further, the brake plate 4 is provided with a vertically arranged slide rail, the slide rail comprises an upper slide rail part 402 and a lower slide rail part 403, both the upper slide rail part 402 and the lower slide rail part 403 are communicated with the through groove 401, the upper end of the rack 5 is slidably connected to the upper slide rail part 402, and the lower end of the rack is slidably connected to the lower slide rail part 403; the upper slide rail portion 402 and the lower slide rail portion 403 are both dovetail slide rails, and dovetail sliders adapted to the dovetail slide rails are formed at the upper and lower ends of the rear portion of the rack 5. The sliding is smoother, and the displacement is avoided.
Further, the rear wall of the rack 5 is provided with a clamping groove 501 arranged transversely, the front end of the connecting rod 9 is inserted into the clamping groove 501, and the rack 5 is fixedly connected with the connecting rod 9 through a first fastening bolt 16;
further, the cross-section of connecting rod 9 is the rectangle, and the width of connecting rod 9 is unanimous with the groove width that leads to groove 401, and connecting rod 9 sliding connection can further guarantee that brake block 4 can not take place to shift when going up and down in leading to groove 401, reduces the wearing and tearing of rack 5 and gear 8.
Further, fixing base 3 includes base 301 and the dead lever 302 of vertical setting that the integration was made, and base 301 links firmly at elevator car 1's top and/or bottom, and connecting rod 9 links firmly with dead lever 302 mutually.
Further, the rear wall of the brake plate 4 is provided with a first limiting plate portion 404 and a second limiting plate portion 405 protruding backward, an adjusting screw 14 vertically penetrates through the connecting rod 9, two ends of the adjusting screw 14 penetrate through the first limiting plate portion 404 and the second limiting plate portion 405 respectively and are locked by a first adjusting nut 10 and a second adjusting nut 11 respectively, a first adjusting spring 12 is arranged between the connecting rod 9 and the first limiting plate portion 404, a second adjusting spring 13 is arranged between the connecting rod 9 and the second limiting plate portion 405, and the first adjusting spring 12 and the second adjusting spring 13 are sleeved on the adjusting screw 14. The first adjusting spring 12 and the second adjusting spring 13 can realize relative dynamic balance between the brake plate 4 and the connecting rod 9, and simultaneously facilitate resetting.
Further, the wheel surface of the cam 7 comprises a smooth transition flat surface part and an arc surface part, and the radial direction of the arc surface part is larger than that of the flat surface part.
Further, the driving device can be fixedly connected to the top of the elevator car 1, and a top rod of the driving source 6 pushes the brake plate 4 upwards to brake; this embodiment can also be attached to the bottom of the elevator car 1, the top rod of the drive source 6 being braked by pushing the brake plate 4 downwards.
The working principle of the embodiment is as follows: when the system monitors that the elevator car 1 moves accidentally or moves accidentally, the ejector rod of the driving source 6 can push the brake plate 4 to lift, the rack 5 is fixedly connected with the fixed seat 3 through the connecting rod 9 and keeps static, the brake plate 4 lifts relative to the rack 5, the gear 8 connected to the fixed shaft 17 of the brake plate 4 rotates along with the rack 5 and drives the cam 7 to rotate, the contact surface of the cam 7 and the elevator guide rail 2 is changed from the original plane part to an arc surface part with a larger diameter, namely, after the two cams 7 which are arranged in pair and symmetrically rotate, the distance between the two cams 7 is reduced, the two cams can be clamped on the elevator guide rail 2, and the elevator car 1 is prevented from further moving accidentally.
The number of pairs of the cams 7 in the embodiment can be set according to actual requirements, and can be a pair, or three pairs, four pairs, and the like, and because the cams 7 are all rotatably connected to the fixed shaft 17 of the same brake plate 4 and driven by the same rack 5, the synchronism among the pairs of cams 7 is good.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.
Claims (10)
1. The utility model provides an avoid unexpected cam-type arresting gear who removes of elevator, a serial communication port, including fixing base (3), braking plate (4) and rack (5), fixing base (3) link firmly on elevator car (1), rack (5) vertical setting just links firmly on fixing base (3), braking plate (4) are connected with driving source (6), driving source (6) link firmly on elevator car (1), and driving source (6) are used for driving braking plate (4) and carry out vertical lift for rack (5), braking plate (4) are connected with at least a pair of cam (7), and two same cam (7) symmetries of pair set up in the both sides of rack (5), and the coaxial gear (8) that has linked firmly on the eccentric shaft of every cam (7), gear (8) and rack (5) meshing connection.
2. The cam type braking device for avoiding accidental movement of elevator according to claim 1, characterized in that the braking plate (4) has a through slot (401) of the through type, the rear portion of the rack (5) is fixed with a connecting rod (9), the connecting rod (9) is inserted in the through slot (401), and the connecting rod (9) is fixed with the fixed seat (3).
3. Cam-type braking device to avoid accidental movements of the elevator according to claim 2, characterized in that said connecting rod (9) is slidingly connected inside a through slot (401).
4. Cam brake device to avoid accidental movement of elevators according to claim 1, characterized in that the brake plate (4) has a vertically arranged sliding track on which the rack (5) is slidingly connected.
5. Cam-type braking device to avoid accidental movements of the elevator according to claim 4, characterized in that said sliding track comprises an upper sliding track portion (402) and a lower sliding track portion (403), both said upper sliding track portion (402) and said lower sliding track portion (403) communicating with the through slot (401).
6. The cam type braking device for avoiding the accidental movement of the elevator according to claim 1, wherein the rear wall of the braking plate (4) is provided with a first limit plate part (404) and a second limit plate part (405) which are protruded backwards, an adjusting screw (14) is vertically inserted into the connecting rod (9), two ends of the adjusting screw (14) respectively penetrate through the first limit plate part (404) and the second limit plate part (405) and are respectively locked by a first adjusting nut (10) and a second adjusting nut (11), a first adjusting spring (12) is arranged between the connecting rod (9) and the first limit plate part (404), a second adjusting spring (13) is arranged between the connecting rod (9) and the second limit plate part (405), and the first adjusting spring (12) and the second adjusting spring (13) are both sleeved on the adjusting screw (14).
7. Cam-type braking device for avoiding accidental movements of elevators according to claim 1, characterized in that said braking plate (4) has attached to it at least one pair of fixed shafts (17) arranged in pairs, said cam (7) and gear (8) being connected to the fixed shafts (17) by means of a first bearing (18) and a second bearing (19), respectively.
8. Cam brake device to avoid accidental movement of elevators according to claim 7, characterized in that the second bearing (19) is located in the cam (7) cavity, the first bearing (18) having one end located in the gear (8) cavity and the other end located in the cam (7) cavity.
9. Cam brake device for avoiding accidental movements of elevators according to any of claims 1-8, characterized in that the cam surface of the cam (7) comprises a smooth transition flat surface and an arc surface, the radial direction of the arc surface being larger than that of the flat surface.
10. The cam type brake device for preventing the elevator from moving accidentally according to any one of claims 1 to 8, characterized in that the fixing base (3) is fixedly connected to the top and/or bottom of the elevator car (1), the driving source (6) is fixedly connected to the elevator car (1), and the driving source (6) is an electromagnetic valve, a hydraulic oil cylinder or a push rod motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211166251.8A CN115490112A (en) | 2022-09-23 | 2022-09-23 | Cam type braking device for avoiding accidental movement of elevator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211166251.8A CN115490112A (en) | 2022-09-23 | 2022-09-23 | Cam type braking device for avoiding accidental movement of elevator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115490112A true CN115490112A (en) | 2022-12-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211166251.8A Pending CN115490112A (en) | 2022-09-23 | 2022-09-23 | Cam type braking device for avoiding accidental movement of elevator |
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| Country | Link |
|---|---|
| CN (1) | CN115490112A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115815959A (en) * | 2023-02-23 | 2023-03-21 | 江苏中谨精密机械有限公司 | Brake pad edge knurling machine |
-
2022
- 2022-09-23 CN CN202211166251.8A patent/CN115490112A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115815959A (en) * | 2023-02-23 | 2023-03-21 | 江苏中谨精密机械有限公司 | Brake pad edge knurling machine |
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